SIGNAL SHUFFLE SEQUENCE TECHNIQUES FOR WIRELESS COMMUNICATIONS

专利摘要:
techniques for generating scramble sequence can provide scrambling for a reference signal, a control signal, or a data signal that is independent of a central frequency of a wireless system bandwidth. the scrambling sequences generated can allow demodulation of signals in which a synchronization channel does not share the same central frequency as the wireless bandwidth.
公开号:BR112019014120A2
申请号:R112019014120-0
申请日:2018-01-10
公开日:2020-03-31
发明作者:Sun Jing；Luo Tao；Lee Heechoon
申请人:Qualcomm Incorporated；
IPC主号:

专利说明:

SIGNAL SHUFFLE SEQUENCE TECHNIQUES FOR WIRELESS COMMUNICATIONS
CROSSED REFERENCES [0001] The present patent application claims priority for patent application No. U.S. 15 / 865,738 by Sun et al., Entitled Signal Scrambling Sequence Techniques For Wireless Communications, filed on January 9, 2018; and provisional patent application No. 62 / 445,127 by Sun et al., entitled Signal Scrambling Sequence Techniques For Wireless Communications, filed January 11, 2017; each of which is assigned to the present assignee.
BACKGROUND [0002] The following refers to wireless communication and, more specifically, signal scrambling sequence techniques for wireless communications.
[0003] Wireless communication systems are widely deployed to provide various types of communication content such as voice, video, packet data, messages, broadcast and so on. These systems may be able to support communication with multiple users by sharing available system resources (for example, time, frequency and power). Examples of such multiple access systems include code division multiple access systems (CDMA), time division multiple access systems (TDMA), frequency division multiple access systems (FDMA) and multiple access systems by orthogonal frequency division (OFDMA) (for example, a long-term evolution system (LTE) or a new radio system
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2/80 (NR)). A wireless multiple access communications system can include multiple base stations or access network nodes, each of which simultaneously supports communication to multiple communication devices, which may otherwise be known as user equipment (UE) .
[0004] In an advanced LTE or LTE (LTE-A) network, a set of one or more base stations can define an eNodeB (eNB). In other examples (for example, on a 5G network or next generation new radio (NR)), a wireless multiple access communication system may include multiple smart radio heads (RHs) in communication with multiple node controllers. access (ANCs), where a set of one or more HRs, in communication with an ANC, defines a base station (for example, an eNB or gNB). A base station can communicate with a set of UEs on downlink (DL) channels (for example, for transmissions from a base station to a UE) and uplink (UL) channels (for example, for transmissions from an UE to a base station).
[0005] An base station in some deployments LTE or NR can to transmit transmissions link downward for one or more UEs, and the one or more UEs can
transmit uplink transmissions back to the base station. In some cases, transmissions can be demodulated based on a scramble sequence. For example, a control channel transmission can be demodulated based on a reference signal that is received from the same transmitter that transmits the control channel transmission. The reference signal
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3/80 can be scrambled and the scramble value for each frequency tone in the reference signal can be a function of a predetermined algorithm (for example, based on a transmitter ID, a transmission index value, a center frequency channel, etc.). A receiver that receives the signal can unscramble the signal, according to a determined scrambling sequence, and decode the signal. In cases where the signal is a reference signal, the reference signal can be used to demodulate other transmissions.
SUMMARY [0006] The techniques described refer to methods, systems, devices or devices that support signal scrambling sequence techniques for wireless communications. In general, the techniques described provide identification of a scramble sequence used for a reference signal, a control signal or a data signal that is independent of a central frequency of a wireless system bandwidth. Such identification of generated scrambling sequences can allow demodulation of signals in which a synchronization channel does not share the same central frequency as the wireless bandwidth. In some examples, a synchronization channel that provides location information for a common control feature set can be identified. A scramble sequence for one or more of a reference signal, a control signal or a data signal, can be determined for use in demodulating the common control feature set, and one or more of the reference signal, the signal
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4/80 control or data signal, can be processed based, at least in part, on the scrambling sequence. In some cases, a cell ID and a subframe or range index for the common control feature set can be determined, and the scrambling sequence identified for one or more of the reference signal, the control signal or the signal based on cell ID and subframe or range index. In some cases, several different numerologies may be available in a wireless communications system, and the subframe or range index may be based on a reference numerology of the various available numerologies.
[0007] A method for wireless communication is described. The method may include identifying a synchronization channel containing location information for a common control resource pool within a system bandwidth, determining a location of the common control resource pool within the system bandwidth based on , at least in part, in the location information, determine a scramble sequence for one or more of a reference signal, a control signal or a data signal, for use in demodulating the common control feature set, and process one or more of the reference signal, the control signal or the data signal, based, at least in part, on the scrambling sequence.
[0008] A device for wireless communication is described. The device may include a means to identify a synchronization channel that contains location information for a common control feature set
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5/80 within a system bandwidth, means for determining a location of the common control feature set within the system bandwidth based, at least in part, on location information, means for determining a sequence of scrambling for one or more of a reference signal, a control signal, or a data signal for use in demodulating the common control feature set, and a means of processing one or more of the reference signal, the control signal or the data signal, based, at least in part, on the scrambling sequence.
[0009] Another device for wireless communication is described. The device can include a processor, memory in electronic communication with the processor and instructions stored in memory. Instructions can be operational to have the processor identify a synchronization channel that contains location information for a common control feature set within a system bandwidth, determine a location for the common control feature set within the system bandwidth based, at least in part, on location information, determine a scramble sequence for one or more of a reference signal, a control signal, or a data signal for use in demodulating the set of common control feature, and process one or more of the
signal reference, the signal of control or the signal in Dice, based, fur any less partly on sequence in scrambling. [0010] It is described a media readable per
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6/80 non-transitory computer for wireless communication. Non-transitory computer-readable media can include operational instructions to have a processor identify a synchronization channel that contains location information for a set of common control resources within a system bandwidth, determine a location of the set of common control feature within system bandwidth based, at least in part, on location information, determine a scramble sequence for one or more of a reference signal, a control signal or a data signal, for use in demodulation of the common control feature set, and process one or more of the reference signal, the control signal or the data signal, based, at least in part, on the scrambling sequence.
[0011] Some examples of the non-transitory computer-readable method, apparatus and media described above may additionally include processes, resources, means or instructions for identifying a central frequency of the synchronization channel, and in which the scrambling sequence for one or more among the reference signal, the control signal or the data signal, can be determined based, at least in part, on the central frequency of the synchronization channel. In some examples of the method, apparatus and non-transient computer-readable media described above, the central frequency of the synchronization channel may be different from a central frequency of the system bandwidth.
[0012] In some examples of the method, apparatus and
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7/80 non-transitory computer-readable media described above, the scrambling sequence for one or more of the reference signal, the control signal or the data signal, can be determined independently of a central frequency of the synchronization channel or a central frequency of the system bandwidth. Some examples of the non-transitory computer-readable method, apparatus and media described above may additionally include processes, resources, means or instructions for determining a cell ID and a subframe or interval index for the common control resource set, and determining the scrambling sequence for one or more of the reference signal, the control signal or the data signal, based on the cell ID and subframe or range index. In some examples of the method, apparatus and non-transitory computer-readable media described above, the subframe or interval index may be based on a reference numerology of a plurality of numerologies available for wireless transmissions within the system bandwidth. In some examples of the method, apparatus and non-transitory computer-readable media described above, the reference numerology corresponds to a pitch spacing of 15 kHz or multiples thereof.
[0013] Some examples of the non-transitory computer-readable method, apparatus and media described above may additionally include processes, resources, means or instructions for identifying a scan of central synchronization channel frequencies within the system bandwidth. Some examples of the method,
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8/80 non-transitory computer-readable apparatus and media described above may additionally include processes, resources, means or instructions for identifying a central frequency of the synchronization channel as one of the central frequencies of the synchronization channel in the scanning of central frequencies of the transmission channel. synchronization.
[0014] In some examples of the non-transitory computer-readable method, apparatus and media described above, processing one or more of the reference signal, the control signal or the data signal, comprises identifying a cell ID and a subframe index or interval associated with the common control feature set, identify a central frequency of the synchronization channel, generate the scramble sequence based, at least in part, on the cell ID, subframe or interval index and frequency center of the synchronization channel, and apply the scramble sequence to a signal pattern of one or more of the reference signal, the control signal or the data signal.
[0015] In some examples of the non-transitory computer-readable method, apparatus and media described above, processing one or more of the reference signal, the control signal or the data signal, additionally comprises identifying a resource element of reference (RE) associated with a received signal, and fill the scramble sequence for REs of one or more of the reference signal, the control signal or the data signal, REs that start at the reference RE based on the sequence of shuffle generated. In some
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9/80 examples, the identification of the reference RE may comprise identifying a constant fixed deviation based, at least in part, on at least one of a physical diffusion channel (PBCH) or remaining minimum system information (RMSI).
[0016] Some examples of the non-transitory computer-readable method, apparatus and media described above may additionally include processes, resources, means or instructions to identify that the common control resource set may be transmitted on a second carrier which may differ from a first carrier used to transmit the synchronization channel. Some examples of the non-transitory computer-readable method, apparatus and media described above may additionally include processes, resources, means or instructions for identifying a central frequency of a second synchronization channel transmitted on the second carrier. Some examples of the non-transitory computer-readable method, apparatus and media described above may additionally include processes, resources, means or instructions for determining the scrambling sequence for one or more of the reference signal, the control signal or the data signal , for use in demodulation of the common control feature set based on the center frequency of the second sync channel.
[0017] Some examples of the non-transitory computer-readable method, apparatus and media described above may additionally include processes, resources, means or instructions for identifying a cell ID and a subframe or range index for the resource set
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10/80 common control, generate the scramble sequence based, at least in part, on the cell ID, subframe or interval index, and the reference RE location, and apply the scramble sequence to the signal signal REs. starting at the reference RE location based on the generated scramble sequence. In some instances, the identification of the reference ER location may comprise identifying a constant fixed deviation based, at least in part, on at least one of a PBCH or ISMS.
[0018] Some examples of the non-transitory computer-readable method, apparatus and media described above may additionally include processes, resources, means or instructions for identifying a scan of central synchronization channel frequencies within the system bandwidth, and identifying a first center frequency of synchronization channel as the location of the reference RE within the system bandwidth. In some examples of the non-transitory computer-readable method, apparatus and media described above, the first center frequency of the sync channel can be selected based on an index of the scan of center frequencies of the sync channel and a parameter that identifies a sequence of scrambling or a length of the scrambling sequence.
BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The Figure 1 illustrates one example of one system for communication without thread that supports techniques in scrambling sequence in signal to communications without
wire according to the aspects of the present disclosure.
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11/80 [0020] Figure 2 illustrates an example of a wireless communications system that supports signal scrambling sequence techniques for wireless communications in accordance with aspects of the present disclosure.
[0021] Figure 3 illustrates an example of wireless resources for a synchronization channel in relation to a system bandwidth, according to the aspects of the present disclosure.
[0022] Figure 4 illustrates an example of wireless resources for a synchronization channel and for common control information, which support signal scrambling sequence techniques for wireless communications in accordance with aspects of the present disclosure.
[0023] Figure 5 illustrates an example of wireless features for a synchronization channel and for common control information, which support signal scrambling sequence techniques for wireless communications in accordance with aspects of the present disclosure.
[0024] Figure 6 illustrates an example of scramble sequence cycles for wireless communications according to aspects of the present disclosure.
[0025] Figure 7 illustrates an example of a process flow that supports signal scrambling sequence techniques for wireless communications in accordance with aspects of the present disclosure.
[0026] Figures 8 to 10 show block diagrams of a device that supports signal scrambling sequence techniques for wireless communications in accordance with aspects of the present disclosure.
[0027] Figure 11 illustrates a block diagram
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12/80 of a system that includes an UE that supports signal scrambling sequence techniques for wireless communications in accordance with aspects of the present disclosure.
[0028] Figure 12 illustrates a block diagram of a system that includes a base station that supports signal scrambling sequence techniques for wireless communications in accordance with aspects of the present disclosure.
[0029] Figures 13 to 17 illustrate methods for signal scrambling sequence techniques for wireless communications in accordance with aspects of the present disclosure.
DETAILED DESCRIPTION [0030] The improved methods, systems, devices or devices from several examples can be used to support scrambling sequence for reference, control or data signals in a wireless communications system. Several techniques described provide the identification of a scramble sequence used for a reference signal, a control signal or a data signal that is independent of a central frequency of a wireless system bandwidth. Such identification of generated scrambling sequences can allow demodulation of signals in which a synchronization channel does not share the same central frequency as the wireless bandwidth. In some examples, a synchronization channel that provides location information for a common control feature set can be identified. A scramble sequence for one or more of a reference signal, a
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13/80 control or a data signal, can be determined for use in demodulation of the common control feature set, and one or more of the reference signal, the control signal or the data signal, can be processed based on , at least in part, following scrambling. In some cases, a cell ID and a subframe index or range for the common control feature set can be determined, and the scrambling sequence identified for one or more of the reference signal, the control signal or the signal based on cell ID and subframe or range index. In some cases, several different numerologies may be available in a wireless communications system, and the subframe or range index may be based on a reference numerology of the various numerologies available.
[0031] Such techniques can provide relatively effective and flexible use of wireless resources, and can help to enhance the efficiency of a wireless network. The present disclosure describes several techniques with reference to next generation networks (for example, 5G or NR networks) that are being designed to support features such as high bandwidth operations, more dynamic subframe / gap types and subframe / gap types autonomous (where the HARQ feedback for a subframe / interval can be transmitted before the end of the subframe / interval). However, such techniques can be used for any system where uplink or downlink transmissions can be transmitted using scrambling sequences.
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14/80 [0032] The aspects of disclosure are initially described in the context of a wireless communications system. aspects of disclosure are further illustrated by and described with reference to device diagrams,
system diagrams and flowcharts what if refer to sequence techniques shuffle in signal to wireless communications. [0033] The Figure 1 illustrates one example of a
wireless communications system 100, in accordance with various aspects of the present disclosure. The wireless communications system 100 includes base stations 105, UEs 115 and a master network 130. In some instances, the wireless communications system 100 may be an LTE (or advanced LTE) network or a New Radio (NR) network ). In some cases, the wireless communications system 100 can support improved broadband communications, ultra-reliable (i.e., critical) communications, low latency communications and communications with low cost and low complexity devices. In some cases, base stations 105 and UEs 115 can communicate with the use of scrambling sequences that can be determined independently of a system bandwidth and / or a central frequency of system bandwidth.
[0034] Base stations 105 can communicate wirelessly with UEs 115 through one or more base station antennas. Each base station 105 can provide communication coverage for a respective geographic coverage area 110. The communication links 125 shown in wireless communication system 100 may include uplink (UL) transmissions from
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15/80 a UE 115 to a base station 105 or downlink (DL) transmissions from a base station 105 to a UE 115. Information and control data can be multiplexed on an uplink channel or downlink according to various techniques. Control data and information can be multiplexed on a downlink channel, for example, using time division multiplexing (TDM) techniques, frequency division multiplexing (FDM) techniques or TDM-FDM techniques hybrid. In some instances, control information transmitted during a downlink channel TTI can be distributed between different control regions in a cascade manner (for example, between a common control region and one or more control-specific control regions). HUH).
[0035] UEs 115 can be dispersed over wireless communication system 100, and each UE 115 can be stationary or mobile. A UE 115 can also be called a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communications device , a remote device, a remote subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a customer or some other suitable terminology. An UE 115 can also be a cell phone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a portable device, a tablet computer, a laptop computer, a wireless phone
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16/80 cord, a personal electronic device, a handheld device, a personal computer, a wireless local circuit station (WLL), an Internet of things (loT) device, an Internet of all things device (loE), a machine-type communication device (MTC), an appliance, a car or the like.
[0036] In some cases, a UE 115 may also be able to communicate directly with other UEs (for example, using a point-to-point protocol (P2P) or device to device (D2D)). One or more of a group of UEs 115 using D2D communications may be within the geographic coverage area 110 of a cell. Other UEs 115 in such a group may be outside the geographic coverage area 110 of a cell or, otherwise, may not be able to receive transmissions from a base station 105. In some cases, groups of UEs 115 that if communicating via D2D communications, they can use a one to many (1: M) system in which each UE 115 transmits to all other UEs 115 in the group. In some cases, a base station 105 makes it easy to program resources for D2D communications. In other cases, D2D communications are performed independently of a 105 base station.
[0037] Some UEs 115, such as MTC or loT devices, can be low cost or low complexity devices and can provide automated communication between machines, that is, Machine to Machine (M2M) communication. M2M or MTC can refer to data communication technologies that allow devices to communicate with each other or with a base station without intervention
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17/80 human. For example, M2M or MTC can refer to communications from devices that integrate sensors or meters to measure or capture information and relay that information to a central server or application program that can make use of the information or present the information to humans who interact with the program or application. Some UEs 115 can be designed to collect information or enable automated machine behavior. Examples of applications for TCM devices include smart metering, inventory monitoring, water level monitoring, equipment monitoring, health service monitoring, wildlife monitoring, geological or climatic event monitoring, fleet tracking or management, remote security detection, physical access control and transaction-based business collection.
[0038] In some cases, an MTC device may operate using duplex (unidirectional) communications at a reduced peak rate. MTC devices can also be configured to enter a deep energy-saving sleep mode when not participating in active communications. In some cases, MTC or loT devices can be designed to support critical functions and the wireless communications system can be configured to provide ultra-reliable communications for those functions.
[0039] Base stations 105 can communicate with main network 130 and with each other. For example, base stations 105 can interface with the
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18/80 main network 130 through backhaul links 132 (for example, SI, etc.). Base stations 105 can communicate with each other on backhaul links 134 (for example, X2, etc.) directly or indirectly (for example, through main network 130). Base stations 105 can perform radio configuration and programming for communication with UEs 115, or they can operate under the control of a base station controller (not shown). In some examples, base stations 105 can be macrocells, small cells, access points or the like. Base stations 105 can also be referred to as eNodeBs (eNBs) 105.
[0040] Base station 105 can be connected by an SI interface to main network 130. The main network can be an evolved packet core (EPC), which can include at least one MME, at least one S-GW and at least least one P-GW. The MME can be the control node that processes the signaling between the UE 115 and the EPC. All user IP packets can be transferred via S-GW, which can be connected by itself to P-GW. P-GW can provide IP address allocation as well as other functions. The P-GW can be connected to the IP services of network operators. Operators' IP services may include the Internet, the Intranet, an IP Multimedia Subsystem (IMS) and a Continuous Transmission Service (PSS) .Switched Packet (PS) (PSS).
[0041] The core network 130 can provide user authentication, access authentication, tracking, Internet Protocol (IP) connectivity and other access, routing or mobility functions. At least some of the network devices, such as a station
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19/80 base 105, may include subcomponents, such as an access network entity, which may be an example of an access node controller (ANC). Each access network entity can communicate with several UEs 115 through several other access network transmission entities, each of which can be an example of an intelligent radio head or a transmit / receive point (TRP). In some configurations, various functions of each access network entity or base station 105 can be distributed across multiple network devices (for example, radio heads and access network controllers) or consolidated into a single network device ( for example, a base station 105).
[0042] The wireless communication system 100 can operate in an ultra-high frequency frequency (UHF) region using frequency bands from 700 MHz to 2,600 MHz (2.6 GHz), although in In some cases, WLAN networks can use frequencies as high as 4 GHz. This region can also be known as the decimeter band, since the wavelengths are in the range of approximately one decimeter to one meter in length. UHF waves can propagate mainly by line of sight and can be blocked by constructions and environmental resources. However, the waves can penetrate walls sufficiently to provide service to internally located UEs 115. The transmission of UHF waves is characterized by smaller antennas and shorter range (for example, less than 100 km) compared to transmission using the lower frequencies (and larger waves) of the high frequency (HF) portion or frequency very high (VHF) of
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20/80 spectrum. In some cases, the wireless communications system 100 may also use extremely high frequency (EHF) portions of the spectrum (for example, from 30 GHz to 300 GHz). This region can also be known as the millimeter band, since the wavelengths are in the range from approximately one millimeter to one centimeter in length. In this way, EHF antennas can be even smaller and more closely spaced than UHF antennas. In some cases, this may facilitate the use of antenna arrays within an UE 115 (for example, for directional beam formation).
[0043] In this way, the wireless communications system 100 can support millimeter wave (mmW) communications between UEs 115 and base stations 105. Devices operating in mmW or EHF bands can have multiple antennas to allow beam formation. That is, a base station 105 can use multiple antennas or antenna arrays to conduct beamform operations for directional communications with an UE 115. Beam formation (which can also be referred to as spatial filtration or directional transmission) is a signal processing technique that can be used on a transmitter (for example, a 105 base station) to conform and / or direct a global antenna beam towards a target receiver (for example, a UE 115). This can be achieved by combining elements in an antenna array in such a way that signals transmitted at particular angles experience constructive interference while others experience destructive interference.
[0044] Wireless multi-entry systems
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21/80 and multiple outputs (MIMO) use a transmission scheme between a transmitter (for example, a base station) and a receiver (for example, a UE), in which both the transmitter and the receiver are equipped with multiple antennas . Some portions of wireless communication system 100 may use beamforming. For example, base station 105 can have an array of antennas with multiple rows and columns of antenna ports that base station 105 can use for beaming in its communication with UE 115. Signals can be transmitted multiple times in different directions (for example, each transmission may be beamed differently). An mmW receiver (for example, a UE 115) can attempt multiple beams (for example, antenna submatrices) while receiving the synchronization signals.
[0045] In some cases, the antennas of a 105 or UE 115 base station may be located within one or more antenna arrays, which can support the beamforming or MIMO operation. One or more base station antennas or antenna arrays can be placed in an antenna mount, such as an antenna tower. In some cases, the antennas or antenna arrays associated with a base station 105 may be located in several geographic locations. A base station 105 can multiply the use of antennas or antenna arrays to conduct beamforming operations for directional communications with an UE 115.
[0046] In some cases, the wireless communications system 100 may be a packet-based network that operates according to a layered protocol stack. In the
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22/80 user, carrier communications or the Packet Data Convergence Protocol (PDCP) layer may be IP based. A Radio Link Control (RLC) layer can, in some cases, perform reassembly and segmentation of the packet to communicate through logical channels. A Media Access Control (MAC) layer can perform priority handling and multiplexing of logical channels in transport channels. The MAC layer can also use hybrid ARQ (HARQ) to provide retransmission at the MAC layer to improve link efficiency. In the control plane, the Radio Resource Control (RRC) protocol layer can provide for establishing, configuring and maintaining an RRC connection between an UE 115 and a 105-c network device, 105-b network device, or main network 130 that supports radio bearers for user plan data. In the Physical layer (PHY), transport channels can be mapped to physical channels.
[0047] The time intervals in LTE or NR can be expressed in multiples of a basic time unit (which can be a sampling period of T _s = 1 / 30,720,000 seconds). Time resources can be organized according to radio frames of 10 ms time length (T _f = 307200T _s ), which can be identified by a system frame number (SFN) in the range 0 to 1,023. Each frame can include ten 1 ms subframes numbered 0 to 9. A subframe can be further divided into two 0.5 ms intervals, each of which contains 6 or 7 OFDM symbol periods (depending on the length of the cycle prefix (CP) attached to each
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23/80 symbol). Excluding the cyclic prefix, each symbol contains 2,048 sample periods. In some cases, the subframe may be the smallest programming unit, also known as a TTI. In other cases, a TTI may be shorter than a subframe or may be dynamically selected (for example, in short TTI bursts or in selected carrier components using short TTIs).
[0048] In some NR deployments, multiple different numerologies may be available, in which the pitch spacing for subcarriers can be increased or decreased, with a corresponding decrease or increase in OFDM symbol periods. For example, a 15 kHz tone spacing of legacy LTE can be used to provide an interval with 7 OFDM symbol periods (for normal CP) with an interval duration of 0.5 ms and would thus provide a radio frame with 20 intervals through 10 subframes of an inherited 10 ms radio frame. Another numerology can provide a pitch spacing of 30 kHz, which can cut the symbol duration of OFDM in half compared to cases that have pitch spacing of 15 kHz, and would provide a radio frame with 40 intervals across a 10 ms time duration that corresponds to an inherited LTE frame. Additional numerologies may also be available in NR systems, such as a 60 kHz tone spacing numerology that has 80 intervals over a 10 ms time duration, a 120 kHz tone spacing numerology that has 160 intervals across time duration of 10 ms, etc. In some cases, a range index can be used to identify a range within a
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24/80 radio and different numerologies can have different numbers of intervals and, therefore, different interval indices, within a radio frame.
[0049] For a tone spacing numerology of 15 kHz, a feature element can consist of a
period of symbol is subcarrier (for example, an frequency range of 15 kHz). One block in resource can contain 12 subcarriers consecutive at the domain in frequency is for a cyclical prefix normal in each
OFDM symbol, 7 consecutive OFDM symbols in the time domain (1 interval) or 84 resource elements. Other numerologies can scale according to the tone spacing of subcarriers. The number of bits loaded by each resource element may depend on the modulation scheme (the symbol configuration that can be selected during each symbol period). Thus, the more resource blocks a UE receives and the larger the modulation scheme, the higher the data rate can be.
[0050] The wireless communication system 100 can support operation in multiple cells or carriers, a feature that can be referred to as carrier aggregation (CA) or multi-port operation. A carrier can also be called a component carrier (CC), a layer, a channel, etc. The terms carrier, component-carrier, cell and channel can be used interchangeably in this document. A UE 115 can be configured with multiple downlink CCs and one or more uplink CCs for carrier aggregation. Carrier aggregation can be used with component carriers of both FDD and
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25/80
TDD.
[0051] In some cases, the wireless communications system 100 may use improved component carriers (eCCs). An eCC can be characterized by one or more features that include: wider bandwidth, shorter symbol duration, shorter transmission time interval (TTIs) and modified control channel configuration. In some cases, an eCC may be associated with a carrier aggregation configuration or a dual connectivity configuration (for example, when multiple server cells have a non-ideal or less than ideal backhaul link). An eCC can also be configured for use on unlicensed spectrum or shared spectrum (where more than one operator is allowed to use the spectrum). An eCC characterized by broad bandwidth may include one or more segments that can be used by UEs 115 that are unable to monitor the entire bandwidth or prefer to use limited bandwidth (for example, to preserve power).
[0052] In some cases, an eCC may use a numerology or symbol duration different from other CCs, which may include the use of a reduced symbol duration compared to the symbol durations of the other CCs. A shorter symbol life can be associated with increased subcarrier spacing, as discussed above, for different numerologies. A TTI in an eCC can consist of one or multiple symbols. In some cases, the duration of TTI (that is, the number of symbols in a TTI) can be variable. A device, such as a UE 115 or
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26/80 base station 105, which uses eCCs can transmit broadband signals (for example, 20, 40, 60, 80 Mhz, etc.) at reduced symbol durations (for example, 16.67 microseconds). An eCC TTI can consist of one or multiple symbols.
[0053] In some cases, the wireless communications system 100 may use both licensed and unlicensed radio spectrum bands. For example, wireless communications system 100 may employ NR technology or unlicensed LTE radio access technology (LTE U) or LTE license assisted access (LTE-LAA) in an unlicensed band such as the band Industrial, Scientific and Medical 5 Ghz (ISM). Through operation in unlicensed radio spectrum bands, wireless devices, such as base stations 105 and UEs 115, can employ listen before speaking (LBT) procedures to ensure that the channel is free before transmitting data. In some cases, operations on unlicensed bands may be based on a carrier aggregation (CA) configuration in conjunction with component carriers (CCs) that operate on a licensed band. Unlicensed spectrum operations may include downlink transmissions, uplink transmissions or both. Duplexing in unlicensed spectrum can be based on frequency division duplexing (FDD), time division duplexing (TDD) or a combination of both.
[0054] In some cases, scrambling sequences can be used for different signals that are transmitted between base stations 105 and UEs. Various
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27/80 described techniques provide the identification of a scrambling sequence used for a reference signal, a control signal or a data signal that is independent of a central frequency of a wireless communications system bandwidth 100. Such identification of generated scrambling sequences can allow demodulation of signals in which a synchronization channel does not share the same central frequency as the wireless bandwidth.
[0055] Figure 2 illustrates an example of a wireless communications system 200 for signal scrambling sequence techniques for wireless communications. The wireless communications system 200 includes base station 105-a and UE 115-a, which can be examples of aspects of base station 105 or UE 115, as described with reference to Figure 1. In the example in Figure 2 , the wireless communications system 200 can operate according to a radio access technology (RAT) such as an NR or 5G RAT, although the techniques described in this document can be applied to any RAT and systems that can use simultaneously two or more different RATs.
[0056] Base station 105-a can communicate with UE 115-a and can receive uplink transmissions from UE 115-a and transmit downlink transmissions to UE 115-a on carrier 205. In some for example, base station 105-a can allocate resources for communication with UEs on carrier 205 and, in some cases, can configure a synchronization channel 210 that can be monitored by UE 115-a. In some cases, a
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The central frequency of the synchronization channel 210 may be different from a central frequency of the system bandwidth used for communications between the UE 115-a and the base station 105-a. The synchronization channel can include information that the UE 115-a can use to find common control information, in some examples.
[0057] In some systems, control information, such as common control information, UE specific control information or combinations thereof, can be transmitted in a downlink control physical channel (PDCCH) transmission. UE 115-a can use a reference signal transmission from base station 105-a as a cell-specific reference signal (CRS) to perform channel estimation, which can be used for demodulation of the transmission of PDCCH. The transmission of the reference signal can be scrambled and the scrambling value for each tone of the reference signal can in some cases be a function: cell ID, a subframe or interval index, and a central frequency of the channel. The scrambling sequences for such signals can be designed to not be a system bandwidth function. In some systems, such as an NR or 5G system, different reference signals can be used for demodulation of PDCCH, such as a demodulation reference signal (DMRS), for demodulation of common control information, EU-specific control information or combinations thereof. In such cases, the scrambling sequences for different reference signals can be defined to allow UE 115-a to perform channel estimation
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29/80 using the reference signal. In addition, several other parameters that can be used to determine the scrambling sequence (for example, cell ID, interval or subframe index, central frequency, etc.) can be identified for NR systems that may have different numerologies and therefore , different interval or subframe indices, synchronization channels that are not centered on a system bandwidth or other variable parameters.
[0058] Additionally, in some NR systems, common control information can be transmitted in sets of control resources (sub-bands) that may not occupy a full broadband signal. In some cases, synchronization channel 210 may contain information to point UE 115-a to the common control resource set, and UE 115-a may be redirected to a specific UE control resource set after receipt. of the common control feature set. As indicated above, in some cases, the synchronization channel 210 may also have a central frequency other than a central frequency of the system bandwidth. The common control feature set can also be configured for different locations within the system bandwidth as well, which may not necessarily be centered on the system bandwidth. Several techniques provided in this document can be used by UE 115-a to decode, for example, a PDCCH into a common control feature set, by providing scrambling sequences for signals that are used for demodulation and channel estimation.
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30/80 [0059] Figure 3 illustrates an example of wireless resources 300 for a synchronization channel in relation to a system bandwidth, in accordance with aspects of the present disclosure. Wireless resources 300 can be used, for example, in communications between a UE and a base station, as discussed above in relation to Figures 1 and 2.
[0060] In this example, the center frequency 305 of a maximum system bandwidth 310 can also be the center frequency of a system bandwidth 315 that is used for current transmissions and for a sync channel 320. The channel of synchronization 320 can contain synchronization signals, such as a primary synchronization signal (PSS) and a secondary synchronization signal (SSS), which can enable synchronization at a subframe level and allow the identification of a physical layer identity and ID of cell, which can be used to identify a location of one or more reference signals for channel estimation. As the sync signal is centered on the system bandwidth 315, a UE that identifies the sync signal can effectively identify the center of the channel as the center frequency 305, according to techniques as used in legacy LTE systems . In cases where such a configuration is used in NR systems, a base station can indicate that legacy LTE synchronization sequences can be used. In such cases, scrambling a signal, such as a reference signal for use in decoding control channel transmissions, can be set to the maximum system bandwidth. THE
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31/80 lower end 325 of the maximum system bandwidth 310 can be identified from the center frequency 305 of the channel and can be used as a reference resource element (RE) to generate a scramble sequence. A random number generator can be started with a seed depending on the cell ID and subframe index to generate a series of pseudo-random numbers that can be sequentially filled in for the scrambled signal REs, which start from the reference RE in the upward direction. up to the upper end 330 of the maximum system bandwidth 310, with only REs within the system bandwidth 315 being used. Although the center frequency 305 of Figure 3 is common across the synchronization channel 320, the maximum system bandwidth 310 and the system bandwidth 315, other examples may not have such a common center frequency.
[0061] Figure 4 illustrates another example of wireless capabilities 400 for signal scrambling sequence techniques for wireless communications, in accordance with aspects of the present disclosure. Wireless features 400 can be used, for example, in communications between a UE and a base station, as discussed above in relation to Figures 1 and 2.
[0062] In this example, the center frequency 405 of a maximum system bandwidth 410 may differ from a center synchronization frequency 420 of a synchronization channel 415. Additionally, a set of common control features 425 can be shifted to synchronization channel 415. In such cases, a
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32/80 receiver, such as a UE, may not be able to identify system bandwidth information and central frequency information from sync channel 415. In some examples, sync channel 415 may include an indication of a location of common control resources 425, and when a receiver searches for synchronization channel 415, it can identify a location of common control resources 425. In such cases, the receiver may not yet know a relative location of synchronization channel 415 and common control features 425 within system bandwidth 410.
[0063] In some examples, the scramble sequences for a signal that can be used to demodulate common control resources 425 can be defined so that the scramble sequence is independent of the center frequency 405 of the system bandwidth 410. In some instances, such a scramble sequence for a signal (for example, a DMRS), can be defined to depend on the central sync frequency 420 of the sync channel 415, but not depend on the central frequency of channel 405. In such cases, after a UE has identified the synchronization channel 415, and knows the central synchronization frequency 420, it can determine the scrambling sequence for the signal to be used to demodulate common control resources 425 (for example, a sequence of scrambling for a DMRS).
[0064] In other examples, a scramble sequence for a signal (for example, a DMRS), can
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33/80 be defined as being independent of the central synchronization frequency 420 as well. In such cases, a receiver, such as a UE, can identify the scramble sequence for tones within the common control features 425, just as a function of the cell ID and range index. In some examples, the range index can be linked to a specific reference numerology due to multiple numerologies supported by NR, as discussed above. Such reference numerology may correspond to a pitch spacing of 15 kHz or multiples thereof, in some examples. In such a way, when the receiver knows where a set of common control resources 425 is, it can identify how to unscramble the resources before decoding, for example, a minimal system information block (MSIB) from a transmitter like a base station. Although several examples are described in this document with reference to a DMRS scrambling sequence that can be used to demodulate common control information, such scrambling sequence techniques can be used for any reference signals, control signals or data signals that may have scramble sequences applied to them.
[0065] As indicated above, in some examples, a scrambling sequence can be identified based on the central synchronization frequency 420. In some cases, the central synchronization frequency 420 can be identified as a point in a central frequency scan of potential synchronization. In this way, a receiver, such as a UE, after identifying the synchronization channel 415 can
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34/80 identify the associated point in the scan as the central synchronization frequency 420, which may be different from the central frequency of channel 405. The scrambling sequence for a reference signal (for example, a DMRS) for PDCCH demodulation can be defined in relation to the central synchronization frequency 420. In such cases, a random number generator can be started with a seed as a function of the cell ID and subframe index that are determined from the synchronization channel 415. An ER associated with the central synchronization frequency 420 can be defined as the reference RE, which can be an RE containing the central synchronization frequency 420 or an ER with a known constant deviation from the central synchronization frequency 420. For example, in some cases , the known constant deviation can be an offset from the synchronization channel edge 415 or the central synchronization frequency. o 420. In some examples, the known constant deviation can be a deviation from the edge of common control resources 425, center frequency 405 or from the center of common control resources 425. The known constant deviation can be received at some additional signaling (for example, sync channel 415 or common control features 425). For example, the known constant deviation can be determined based on a PBCH or an ISMS. The random number generator can be used to generate a sequence of pseudo-random numbers that can be sequentially filled in the reference signal REs starting from the reference RE in an upward direction. In some cases, the generated sequence may
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35/80 engage in another known fixed deviation in cases where the reference signal REs may be located at frequencies below that of the reference RE. Such involvement may not be necessary in cases where the reference RE is set to be low enough that there is no reference signal RE at lower frequencies on the same channel. In some examples, the scrambling sequence can start from the synchronization center frequency reference RE 420 and the reference signal REs can be filled in both upward and downward directions, rather than just upward.
[0066] In some cases, multiple component carriers may be present in a system, and a receiver, such as a UE, may need to identify a central synchronization channel frequency for different carriers in order to unscramble a reference signal from the other carrier. In some examples, a receiver can be signaled to monitor a set of control features from another carrier, and can be provided with the center of the synchronization channel of the other carrier, which can allow the generation of the scramble sequence on the carrier. In other examples, multiple synchronization signals can be transmitted at different points in the synchronization scan. In such cases, a sync signal transmitter, such as a base station, can provide a set of common control features pointed from the respective sync signals and the scrambling sequence can be determined as discussed above. For other sets
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36/80 of control resources, a transmitter can provide an indication of a particular sync signal to use in order to generate a scramble sequence or it can indicate that a different scramble sequence generation can be used for such other resource sets of control.
[0067] Figure 5 illustrates another example of wireless features 500 for signal scrambling sequence techniques for wireless communications. The wireless features 500 can be used, for example, in communications between a UE and a base station, as discussed above in relation to Figures 1 and 2.
[0068] In this example, the center frequency 505 of a maximum system bandwidth 515 may be different from a center synchronization frequency 520 of a synchronization channel 525. The central synchronization frequency 520 can be a scan point of 510 synchronization that can provide several central synchronization frequencies available. In this example, a reference RE 530 can be defined. In addition, a set of common control features 535 can be moved from the sync channel 525. Similarly, as discussed above, a receiver, such as a UE, may not be able to identify system bandwidth information and central frequency information from sync channel 525. In some instances, sync channel 525 may include an indication of a location for common control resources 535, and when a receiver searches for sync channel 525, it can identify a location
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37/80 of the common control resources 535. In such cases, the receiver may not yet know a relative location of the sync channel 525 and common control resources 535 within the system bandwidth 515.
[0069] In this example, the sync channel 525 can be centered at one of the points on the sync scan 510. After a receiver identifies the sync channel 525, it can identify the central sync frequency 520, which may be different of the center frequency of channel 505. In the example in Figure 5, a scrambling sequence for a reference signal (eg DMRS) for demodulation of the control channel can be defined in relation to an absolute reference RE 530. In such cases , the random number generator can be started with a seed depending on the cell ID and subframe index, identified from the synchronization channel 525, and the random numbers generated and sequentially filled in the reference signal REs that start from of the reference RE 530 in an upward direction. In some cases, only the reference signal REs within the system bandwidth 515 are used to generate the scramble sequence.
[0070] In some cases, the reference RE 530 can be defined as a point in the synchronization scan index 510. In some cases, the reference RE 530 can be defined so that it is relatively close to the set of control features common 535, which can provide relatively shorter scrambling sequences to reach and cover the common 535 control features, and can help reduce the number of times the
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38/80 random number generator must be timed. For example, reference RE 530 is in fO and the carrier for the common control feature set 535 is centered in fl, and fO and fl are relatively distant, so the random number generator may need to be timed several times in that the outlet is not used.
[0071] As indicated above, the seed for a random number generator that generates the scramble sequence can be a function of cell ID and interval index (time). In cases where several different numerologies may be available, such as different numerologies available in NR, a numerology index can be included in the function to determine a random seed. Additionally, if extended CP (ECP) is supported in addition to normal CP (NCP), an NCP or ECP flag can be used in the function to also generate the seed.
[0072] Figure 6 illustrates another example of wireless capabilities 600 for signal scrambling sequence techniques for wireless communications, in accordance with various aspects of the present disclosure. The wireless features 600 can be used, for example, in communications between a UE and a base station, as discussed above in relation to Figures 1 and 2.
[0073] In this example, the central frequency 605 of a system bandwidth 615 can again be different from a central synchronization frequency of a synchronization channel. The center synchronization frequency can be a point of a 610 synchronization scan that can provide several central synchronization frequencies available. In this example, you can
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39/80 several different available Reference REs 620 can be defined that can be used to provide several cycles of 625 reference signal scrambling sequences.
[0074] In the example of Figure 6, when synchronization scan 610 is defined, several reference RE reference points 620 can be established. Each point in the 610 sync scan can have a scan frequency index (such as a channel index) s. In some examples, a reference RE 620 may be identified as a tone that corresponds to the synchronization scan frequency with s mod X = 0, where X is a specified integer parameter, X> 1. Alternatively, one or more among reference REs 620 can be defined as a fixed deviation from the synchronization scan frequency with s mod X = 0. For example, the fixed deviation can be a known constant deviation, and it can be a deviation from a synchronization signal corresponding to the 610 synchronization scan or from a common control signal. The known constant deviation can be received in some additional signaling (for example, the synchronization signal or the common control signal). For example, the known constant deviation can be determined based on a physical diffusion channel (PBCH) or minimum remaining system information (RMSI). The random number generator that generates the scramble sequence can start from the corresponding reference RE 620 and fill in the reference signal REs in an upward direction. The sequence generator can be reset to the initial seed when it reaches the next 620 Reference RE and
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40/80 form, the scrambling sequence for the transmission of the reference signal may have a periodic structure with several cycles 625 of scrambling sequences.
[0075] The selection of X in such examples will determine a period length of each 625 cycle of scrambling sequences. In some cases, the length of the period can be selected to be long enough to provide a relatively small impact on a peak to average power ratio (PAPR) of the reference signal and still be short enough to provide a relatively scrambling sequence. which can provide some savings in processing and memory resources. In some cases, if the reference signal is to be transmitted on a downlink transmission from a base station, the PAPR may not be as critical as if the reference signal is transmitted on an uplink transmission from a base station. a UE. Thus, in some cases, the value of X can be selected based on a transmitter that must transmit the reference signal, control signal or scrambled data signal. In one example, the spacing of points in the 610 sync scan can be 1.8 MHz, and the value of X can be set to X = 10, which can establish that there is no repetition in the scramble sequence if the width of system band is within 18 MHz. In another example, the spacing of points in the 610 sync scan can be 1.8 MHz, and the value of X can be set to X = 2, which establishes that there will be five repetitions in a system bandwidth of 18 MHz. Such a sequence design
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41/80 periodic can be used in cases where there are multiple synchronization signals at different synchronization scan points. In some cases, a UE may be signaled to monitor a set of control features from another carrier, and it would not be necessary to know the center frequency of the other carrier's sync signal.
[007 6] Figure 7 illustrates an example of a process flow 700 for signal scrambling sequence techniques for wireless communications, in accordance with various aspects of the present disclosure. Process flow 700 can include a base station 105-b and a UE 115-b, which can be examples of the corresponding devices described with reference to Figures 1 and 2.
[0077] Base station 105-b can transmit a 705 synchronization channel to UE 115-b. The synchronization channel can include, for example, PSS and SSS transmissions, as well as an indication of a location of a common control feature set within a system bandwidth. In some cases, the common control feature set can be moved from the synchronization channel. In some cases, a central frequency of the synchronization channel may be different from a central frequency of the system bandwidth for communications between the base station 105-b and the UE 115-b.
[0078] In block 710, UE 115-b can identify a location in the common control resource set. The location in the common control feature set can be identified, for example, by a pointer contained in the sync channel that can indicate the location of the
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42/80 common control feature set. In some cases, such a pointer may provide a relative location of the common control feature set that is relative to a central frequency of the synchronization channel. In some cases, such a pointer may have a value that is mapped to a particular deviation, for example.
[0079] In block 715, UE 115-b can identify a scramble sequence for the common control feature set. In some cases, the scramble sequence can be used to scramble a reference signal, and the reference signal can be used for channel estimation to demodulate information in the common control feature set, such as PDCCH transmissions contained in the set of common control feature. The scrambling sequence can be identified based, at least in part, on the central frequency of the synchronization channel, in some examples, as discussed above with reference to Figure 4. In some examples, the scrambling sequence can be identified independently of a central frequency of the synchronization channel or a central frequency of the system bandwidth, as discussed above with reference to Figures 5 and 6.
[0080] In block 720, base station 105-b can generate common control information for transmission on common control resources. Common control information can include, for example, random access information and system parameters that can be used to establish a connection between base station 105-b and UE 115-b. Common control information can be formatted into the set of common control features that
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43/80 are indicated on the synchronization channel, and transmitted in downlink transmission 725 to UE 115-b.
[0081] UE 115-b can, in block 730, unscramble a reference signal from the common control information. UE 115-b can unscramble the reference signal according to the scrambling sequence identified for the reference signal. A channel estimation can be performed based on the scrambled reference signal, which can be used to demodulate and decode common control information, as indicated in block 735.
[0082] Figure 8 shows a block diagram 800 of a wireless device 805 that supports signal scrambling sequence techniques for wireless communications, in accordance with various aspects of the present disclosure. The wireless device 805 can be an example of the aspects of a user device (UE) 115 or base station 105, as described with reference to Figure 1. The wireless device 805 can include receiver 810, scramble sequence manager 815 and transmitter 820. The wireless device 805 may also include a processor. Each of these components can be in communication with each other (for example, through one or more buses).
[0083] The 810 receiver can receive information such as packages, user data or control information associated with various information channels (for example, control channels, data channels and information related to signal scrambling sequence techniques for communications without wire, etc.). The information can be passed on to other components of the
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44/80 device. Receiver 810 can be an example of aspects of transceiver 1135 described with reference to Figure 11.
[0084] The shuffle sequence manager 815 can be an example of the aspects of the shuffle sequence manager 1115 described with reference to Figure 11.
[0085] The 815 scramble sequence manager and / or at least some of its various subcomponents can be deployed in hardware, software run by a processor, firmware or any combination thereof. If deployed in software run by a processor, the functions of the 815 scramble sequence manager and / or at least some of its various subcomponents can be performed by a general purpose processor, a digital signal processor (DSP), an integrated circuit application-specific (ASIC), a field programmable gate array (FPGA) or other programmable logic device, transistor logic or discrete gate, discrete hardware components or any combination thereof, designed to perform the functions described in the present disclosure. The 815 scramble sequence manager and / or at least some of its various subcomponents can be physically located in different positions, which include being distributed so that the function portions are deployed in different physical locations by one or more physical devices. In some examples, the 815 scramble sequence manager and / or at least some of its subcomponents may be a separate and separate component, according to different aspects of the
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45/80 present revelation. In other examples, the 815 scramble sequence manager and / or at least some of its various subcomponents can be combined with one or more other hardware components, including, but not limited to, an I / O component, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof, in accordance with various aspects of the present disclosure.
[0086] The 815 scramble sequence manager can identify a synchronization channel that contains location information for a common control feature set within a system bandwidth, determine a location of the common control feature set within the system bandwidth based on location information, determining a scramble sequence for one or more of a reference signal, a control signal, or a data signal, for use in demodulating the common control feature set, and process one or more of the reference signal, the control signal or the data signal, based on the scrambling sequence.
[0087] The transmitter 820 can transmit signals generated by other components of the device. In some instances, transmitter 820 can be colocalized with an 810 receiver on a transceiver module. For example, transmitter 820 can be an example of aspects of transceiver 1135 described with reference to Figure 11. Transmitter 820 can include a single antenna or can include a set of antennas.
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46/80 [0088] Figure 9 shows a block diagram 900 of a wireless device 905 that supports signal scrambling sequence techniques for wireless communications, in accordance with various aspects of the present disclosure. The wireless device 905 can be an example of aspects of a wireless device 805, an UE 115 or base station 105 as described with reference to Figures 1 and 8. The wireless device 905 can include receiver 910, sequence manager, scrambling 915 and transmitter 920. The wireless device 905 can also include a processor. Each of these components can be in communication with each other (for example, through one or more buses).
[0089] The 910 receiver can receive information such as packages, user data or control information associated with various information channels (for example, control channels, data channels and information related to signal scrambling sequence techniques for communications without wire, etc.). The information can be passed on to other components of the device. Receiver 910 can be an example of aspects of transceiver 1135 described with reference to Figure 11.
[0090] The scramble sequence manager 915 can be an example of aspects of the scramble sequence manager 1115 described with reference to Figure 11. The scramble sequence manager 915 can also include sync channel component 925, feature component control unit 930, 935 scrambling sequence identification component and signal processing component
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47/80
940.
[0091] The synchronization channel component 925 can identify a synchronization channel that contains location information for a common control feature set within a system bandwidth. In some cases, the central frequency of the synchronization channel is different from a central frequency of the system bandwidth.
[0092] The common control feature component 930 can determine a location of the common control feature set within the system bandwidth based on the location information. In some cases, the common control feature set may be transmitted on a second component-carrier that is different from a first component-carrier used to transmit the synchronization channel.
[0093] The scrambling sequence identification component 935 can determine a scrambling sequence for one or more of a reference signal, a control signal or a data signal, for use in demodulating the common control feature set. In some cases, the scrambling sequence identification component 935 may determine the scrambling sequence for one or more of the reference signal, the control signal or the data signal, based on a cell ID and subframe index or signal interval. In some cases, the scrambling sequence identification component 935 may identify a central frequency of the synchronization channel, and the scrambling sequence for one or more of the
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48/80 reference, the control signal or the data signal, can be determined based on the central frequency of the synchronization channel. In some cases, the scrambling sequence identification component 935 can identify a central frequency of a second synchronization channel transmitted on the second component carrier, and determine the scrambling sequence for one or more of the reference signal, the control or data signal, for use in demodulating the common control feature set based on the center frequency of the second sync channel.
[0094] In some cases, the shuffle sequence identification component 935 may identify a reference RE location within the system bandwidth, and generate the shuffle sequence based on the cell ID, subframe index or reference RE interval and location. In some instances, the identification of the reference ER location may comprise identifying a constant fixed deviation based, at least in part, on at least one of a physical diffusion channel (PBCH) or remaining minimum system information (ISMS). In some cases, the scrambling sequence for one or more of the reference signal, the control signal or the data signal, is determined independently of a central frequency of the synchronization channel or a central frequency of the system bandwidth. In some cases, processing one or more of the reference signal, the control signal or the data signal, includes identifying a cell ID and a
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49/80 subframe index or interval associated with the common control feature set, identify a central frequency of the synchronization channel, generate the scramble sequence based on the cell ID, subframe or interval index and the central frequency of the channel synchronization, and apply the scramble sequence to a signal pattern of one or more of the reference signal, the control signal or the data signal. In some cases, processing one or more of the reference signal, the control signal or the data signal, additionally includes identifying a reference RE associated with a received signal, and filling in the scramble sequence for one or more REs. more among the reference signal, the control signal or the data signal, REs that start at the reference RE based on the generated scramble sequence. In some instances, the identification of the reference ER may comprise identifying a constant fixed deviation based, at least in part, on at least one of a PBCH or ISMS.
[0095] The signal processing component 940 can apply the scramble sequence to reference signal REs that start at the reference RE location based on the generated scramble sequence and process one or more of the reference signal, the signal control or data signal, based on the scrambling sequence.
[0096] The 920 transmitter can transmit signals generated by other components of the device. In some examples, transmitter 920 can be colocalized with a 910 receiver on a transceiver module. For example, the
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transmitter 920 can be a example in aspects of transceiver 1135 described with reference The Figure 11. 0 transmitter 920 can include Single antenna or can
include a set of antennas.
[0097] Figure 10 shows a block diagram 1000 of a scramble sequence manager 1015 that supports scramble sequence techniques for wireless communications, in accordance with various aspects of the present disclosure. The scramble sequence manager 1015 can be an example of aspects of a scramble sequence manager 815, a scramble sequence manager 915 or a scramble sequence manager 1115 described with reference to Figures 8, 9 and 11. The manager scrambling sequence component 1015 can include sync channel component 1020, common control feature component 1025, scrambling sequence identification component 1030, signal processing component 1035, interval / subframe index component 1040 and scanning component 1045. Each of these modules can communicate, directly or indirectly, with each other (for example, through one or more buses).
[0098] The 1020 synchronization channel component can identify a synchronization channel that contains location information for a common control feature set within a system bandwidth. In some cases, the central frequency of the synchronization channel is different from a central frequency of the system bandwidth.
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51/80 [0099] The common control resource component 1025 can determine a location of the common control resource set within the system bandwidth based on the location information and identify that the common control resource set is transmitted on a second carrier that is different from a first carrier used to transmit the synchronization channel.
[0100] The 1030 scrambling sequence identification component can determine a scrambling sequence for one or more of a reference signal, a control signal or a data signal, for use in demodulating the common control feature set. In some cases, the scrambling sequence identification component 1030 may determine the scrambling sequence for one or more of the reference signal, the control signal or the data signal, based on a cell ID and subframe index or signal interval. In some cases, the scrambling sequence identification component 1030 may identify a central frequency of the synchronization channel, and the scrambling sequence for one or more of the reference signal, the control signal or the data signal, may be determined based on the center frequency of the sync channel. In some cases, the scrambling sequence identification component 1030 can identify a central frequency of a second synchronization channel transmitted on the second component carrier, and determine the scrambling sequence for one or more of the reference signal, the control or data signal, for use in demodulating the set of
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52/80 common control feature based on the center frequency of the second sync channel.
[0101] In some cases, the 1030 scramble sequence identification component can identify a reference RE location within the system bandwidth, and generate the scramble sequence based on the cell ID, subframe index or reference RE interval and location. In some instances, the identification of the reference ER location may comprise identifying a constant fixed deviation based, at least in part, on at least one of a PBCH or ISMS. In some cases, the scrambling sequence for one or more of the reference signal, the control signal or the data signal, is determined independently of a central frequency of the synchronization channel or a central frequency of the system bandwidth. In some cases, processing one or more of the reference signal, the control signal or the data signal, includes identifying a cell ID and a subframe or range index associated with the common control feature set, identifying a center frequency of the sync channel, generate the scramble sequence based on the cell ID, subframe or interval index, and the center frequency of the sync channel, and apply the scramble sequence to a signal pattern of one or more among the reference signal, the control signal or the data signal. In some cases, processing one or more of the reference signal, the control signal or the data signal, additionally includes identifying a
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53/80 reference associated with a received signal, and fill the scramble sequence for REs of one or more of the reference signal, the control signal or the data signal, REs that start at the reference RE based on the sequence of shuffle generated. In some instances, the identification of the reference ER may comprise identifying a constant fixed deviation based, at least in part, on at least one of a PBCH or ISMS.
[0102] 0 component in processing in signal 1035 can apply to sequence in shuffle The REs in signal in reference that start on location in RE in
reference based on the generated scramble sequence and process one or more of the reference signal, the control signal or the data signal, based on the scramble sequence.
[0103] The 1040 range / subframe index component can determine a cell ID and a subframe or range index for the common control feature set. In some cases, the subframe or range index is based on a reference numerology from a set of numerologies available for wireless transmissions within the system bandwidth. In some cases, the reference numerology corresponds to a pitch spacing of 15 kHz or multiples thereof.
[0104] Scan component 1045 can identify a scan of center frequencies of the sync channel within the system bandwidth, identify a center frequency of the sync channel as one of the center frequencies of the sync channel in a frequency scan
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54/80 channel synchronization centers. In some cases, a first center frequency of the synchronization channel can be identified as a reference RE location within the system bandwidth. In some cases, the first sync channel center frequency is selected based on an index of the sync channel center frequency scan and a parameter that identifies a scramble sequence or a length of the scramble sequence.
[0105] Figure 11 shows a diagram of a system 1100 that includes a device 1105 that supports signal scrambling sequence techniques for wireless communications, in accordance with various aspects of the present disclosure. Device 1105 can be an example of or include components of wireless device 805, wireless device 905 or an UE 115, as described above, for example, with reference to Figures 1, 8 and 9. Device 1105 can include components for bidirectional voice and data communications that include components for transmitting and receiving communications, including UE 1115 scramble sequence manager, processor 1120, memory 1125, software 1130, transceiver 1135, antenna 1140 and I / O controller 1145. These components can be in electronic communication through one or more buses
(for example, O bus 1110). 0 device 1105 can communicate of mode wireless with one or more seasons- -basic 105. [0106] 0 processor 1120 can include one device in smart hardware (per example, one processor in use general one DSP, an unity in
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55/80 central processing (CPU), a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component or any combination thereof). In some cases, the 1120 processor can be configured to operate a memory array using a memory controller. In other cases, a memory controller can be integrated into an 1120 processor. The 1120 processor can be configured to execute computer-readable instructions stored in memory to perform various functions (for example, functions or tasks that support sequence shuffling techniques signal for wireless communications).
[0107] The 1125 memory can include random access memory (RAM) and read-only memory (ROM). The 1125 memory can store 1130 computer-readable, computer-readable software that includes instructions that, when executed, cause the processor to perform various functions described in this document. In some cases, the 1125 memory may contain, among other things, a basic input / output system (BIOS) that can control basic hardware and / or software operation such as interaction with peripheral devices or components.
[0108] Software 1130 may include code to implement aspects of the present disclosure, which includes code to support signal scrambling sequence techniques for wireless communications. The 1130 software can be stored on a non-transitory computer-readable media such as system memory or other
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56/80 memory. In some cases, the 1130 software may not be directly executable by the processor, but it may cause a computer (for example, when compiled and run) to perform functions described in this document.
[0109] The 1135 transceiver can communicate in a bidirectional way through one or more antennas, wired or wireless links, as described above. For example, the 1135 transceiver can represent a wireless transceiver and can communicate in a bidirectional manner with another wireless transceiver. The 1135 transceiver may also include a modem to modulate the packets and provide the modulated packets to the antennas for transmission and to demodulate packets received from the antennas.
[0110] In some cases, the wireless device may include a single 1140 antenna. However, in some cases, the device may have more than one 1140 antenna, which may be able to simultaneously transmit or receive multiple wireless transmissions.
[0111] 0 controller I / O 1145 may to manage input signals and exit to the device 1105. 0 controller I / O 1145 also can manage peripherals not integrated at the device 1105. In some cases, the controller I / O 1145 may represent a door or physical connection. to a peripheral external ·. In some cases, the
I / O controller 1145 can use an operating system such as iOS®, ANDROID®, MS-DOS®, MS-WINDOWS®, OS / 2®, UNIX®, LINUX® or another known operating system. In other cases, the 1145 I / O controller can represent or interact with a modem, keyboard, mouse, touch screen or similar device. In some
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57/80 cases, the 1145 I / O controller can be deployed as part of a processor. In some cases, a user can interact with device 1105 through the 1145 I / O controller or through hardware components controlled by the 1145 I / O controller.
[0112] Figure 12 shows a diagram of a system 1200 that includes a device 1205 that supports signal scrambling sequence techniques for wireless communications, in accordance with various aspects of the present disclosure. Device 1205 can be an example of or include components of wireless device 905, wireless device 1005 or a base station 105, as described above, for example, with reference to Figures 1, 9 and 10. Device 1205 can include components for bidirectional voice and data communications that include components for transmitting and receiving communications, including base station scrambling sequence manager 1215, processor 1220, memory 1225, software 1230, transceiver 1235, antenna 1240, network communications manager 1245 and base station communications manager 1250. These components can be in electronic communication through one or more buses (for example, the 1210 bus). The 1205 device can communicate wirelessly with one or more UEs 115.
[0113] The 1220 processor may include an intelligent hardware device (for example, a general purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a transistor or gate logic component discrete, a discrete hardware component or any
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58/80 combination). In some cases, the 1220 processor can be configured to operate a memory array using a memory controller. In other cases, a memory controller can be integrated into a 1220 processor. The 1120 processor can be configured to execute computer-readable instructions stored in memory to perform various functions (for example, functions or tasks that support sequence scrambling techniques) signal for wireless communications).
[0114] Memory 1225 can include RAM and ROM. Memory 1225 can store software executable by computer, readable by computer 1230 that includes instructions that, when executed, cause the processor to perform several functions described in this document. In some cases, memory 1225 may contain, among other things, a BIOS that can control the operation of basic hardware and / or software such as interaction with peripheral devices or components.
[0115] Software 1230 may include code to implement aspects of the present disclosure, which includes code to support signal scrambling sequence techniques for wireless communications. The 1230 software can be stored on a non-transitory, computer readable media such as system memory or other memory. In some cases, the 1230 software may not be directly executable by the processor, but it can cause a computer (for example, when compiled and run) to perform functions described in this document.
[0116] Transceiver 1235 can communicate in a bidirectional way through one or more antennas,
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59/80 wired or wireless links, as described above. For example, transceiver 1235 can represent a wireless transceiver and can communicate in a bidirectional manner with another wireless transceiver. Transceiver 1235 may also include a modem to modulate the packets and provide the modulated packets to the antennas for transmission and to demodulate packets received from the antennas. [0117] In some cases, the wireless device may include a single 1240 antenna. However, in some cases, the device may have more than one 1240 antenna, which may be able to simultaneously transmit or receive multiple wireless transmissions.
[0118] The network communications manager 1245 can manage communications with the main network (for example, through one or more wired backhaul links). For example, the network communications manager 1245 can manage the transfer of data communications to client devices, such as one or more UEs 115.
[0119] The base station communications manager 1250 can manage communications with another base station 105, and may include a controller or programmer to control communications with UEs 115 in cooperation with other base stations 105. For example, the base station communications manager base 1250 can coordinate scheduling for transmissions to UEs 115 for various interference mitigation techniques such as junction transmission or beam formation. In some instances, the base station communications manager 1250 can provide an X2 interface within long-term evolution wireless networking technology
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60/80 (LTE) / LTE-A to provide communication between base stations 105.
[0120] Figure 13 shows a flow chart illustrating a 1300 method for signal scrambling sequence techniques for wireless communications in accordance with various aspects of the present disclosure. Method 1300 operations can be deployed by an UE 115 or base station 105 or its components as described in this document. For example, method 1300 operations can be performed by a scramble sequence manager as described with reference to Figures 8 to 10. In some examples, a UE 115 or base station 105 can execute a set of codes to control the functional elements of the device to perform the functions described below. In addition or alternatively, the UE 115 or the base station 105 can perform aspects of the functions described below using special purpose hardware.
[0121] In block 1305, UE 115 or base station 105 can identify a synchronization channel that contains location information for a common control feature set within a system bandwidth. Block 1305 operations can be performed according to the methods described with reference to Figures 1 to 7. In certain examples, aspects of block 1305 operations can be performed by a synchronization channel component, as described with reference to Figures 8 to 10.
[0122] In block 1310, UE 115 or base station 105 can determine a resource pool location
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61/80 common control within system bandwidth based, at least in part, on location information. Block 1310 operations can be performed according to the methods described with reference to Figures 1 to 7. In certain examples, aspects of block 1310 operations can be performed by a common control feature component, as described with reference to Figures 8 to 10.
[0123] In block 1315, the UE 115 or base station 105 can determine a scrambling sequence for one or more of a reference signal, a control signal or a data signal, for use in demodulating the resource set of common control. Block 1315 operations can be performed according to the methods described with reference to Figures 1 to 7. In certain examples, aspects of block 1315 operations can be performed by a scrambling sequence identification component, as described with reference Figures 8 to 10.
[0124] In block 1320, UE 115 or base station 105 can process one or more of the reference signal, the control signal or the data signal, based, at least in part, on the scrambling sequence. Block 1320 operations can be performed according to the methods described with reference to Figures 1 to 7. In certain examples, aspects of block 1320 operations can be performed by a signal processing component, as described with reference to Figures 8 to 10.
[0125] Figure 14 shows a flow chart illustrating a 1400 method for sequencing techniques
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62/80 signal shuffle for wireless communications in accordance with various aspects of the present disclosure. Method 1400 operations can be deployed by an UE 115 or base station 105 or its components as described in this document. For example, method 1400 operations can be performed by a scramble sequence manager as described with reference to Figures 8 to 10. In some examples, a UE 115 or base station 105 can execute a set of codes to control the functional elements of the device to perform the functions described below. In addition or alternatively, the UE 115 or the base station 105 can perform aspects of the functions described below using special purpose hardware.
[0126] In block 1405, the UE 115 or base station 105 can identify a central frequency of a synchronization channel that contains location information for a common control resource set within a system bandwidth. Block 1405 operations can be performed according to the methods described with reference to Figures 1 to 7. In certain examples, aspects of block 1405 operations can be performed by a synchronization channel component, as described with reference to Figures 8 to 10.
[0127] In block 1410, the UE 115 or base station 105 can determine a location of the common control feature set within the system bandwidth based, at least in part, on the location information. Block 1410 operations can be performed according to the methods described with reference to Figures 1 to 7.
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In certain examples, aspects of operations in block 1410 can be performed by a common control feature component, as described with reference to Figures 8 to 10.
[0128] In block 1415, the UE 115 or base station 105 can determine a scramble sequence for one or more of a reference signal, a control signal or a data signal, for use in demodulating the data resource set. common control based on the center frequency of the synchronization channel. Block 1415 operations can be performed according to the methods described with reference to Figures 1 to 7. In certain examples, aspects of block 1415 operations can be performed by a scrambling sequence identification component, as described with reference Figures 8 to 10.
[0129] In block 1420, UE 115 or base station 105 can process one or more of the reference signal, the control signal or the data signal, based, at least in part, on the scrambling sequence. Block 1420 operations can be performed according to the methods described with reference to Figures 1 to 7. In certain examples, aspects of block 1420 operations can be performed by a signal processing component, as described with reference to Figures 8 to 10.
[0130] Figure 15 shows a flow chart illustrating a 1500 method for signal scrambling sequence techniques for wireless communications in accordance with various aspects of the present disclosure. Method 1500 operations can be deployed by a UE 115 or
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64/80 base station 105 or its components as described in this document. For example, method 1500 operations can be performed by a scramble sequence manager as described with reference to Figures 8 to 10. In some examples, a UE 115 or base station 105 can execute a set of codes to control the functional elements of the device to perform the functions described below. In addition or alternatively, the UE 115 or the base station 105 can perform aspects of the functions described below using special purpose hardware.
[0131] In block 1505, the UE 115 or base station 105 can identify a synchronization channel that contains location information for a common control feature set within a system bandwidth. Block 1505 operations can be performed according to the methods described with reference to Figures 1 to 7. In certain examples, aspects of block 1505 operations can be performed by a synchronization channel component, as described with reference to Figures 8 to 10.
[0132] In block 1510, the UE 115 or base station 105 can determine a location of the common control feature set within the system bandwidth based, at least in part, on the location information. Block 1510 operations can be performed according to the methods described with reference to Figures 1 to 7. In certain examples, aspects of block 1510 operations can be performed by a common control feature component, as described with reference to Figures
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65/80 to 10.
[0133] In block 1515, UE 115 or base station 105 can determine a cell ID and a subframe or range index for the common control resource set. Block 1515 operations can be performed according to the methods described with reference to Figures 1 to 7. In certain examples, aspects of block 1515 operations can be performed by a range / subframe index component, as described with reference Figures 8 to 10.
[0134] In block 1520, UE 115 or base station 105 can determine the scrambling sequence for one or more of the reference signal, the control signal or the data signal, based on the cell ID and index of subframe or range. Block 1520 operations can be performed according to the methods described with reference to Figures 1 to 7. In certain examples, aspects of block 1520 operations can be performed by a scrambling sequence identification component, as described with reference Figures 8 to 10.
[0135] In block 1525, UE 115 or base station 105 can process one or more of the reference signal, the control signal or the data signal, based, at least in part, on the scrambling sequence. Block 1525 operations can be performed according to the methods described with reference to Figures 1 to 7. In certain examples, aspects of block 1525 operations can be performed by a signal processing component, as described with reference to Figures 8 to 10.
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66/80 [0136] Figure 16 shows a flow chart illustrating a 1600 method for signal scrambling sequence techniques for wireless communications in accordance with various aspects of the present disclosure. The 1600 method operations can be deployed by an UE 115 or base station 105 or its components as described in this document. For example, operations of method 1600 can be performed by a scramble sequence manager as described with reference to Figures 8 to 10. In some examples, a UE 115 or base station 105 can execute a set of codes to control the functional elements of the device to perform the functions described below. In addition or alternatively, the UE 115 or the base station 105 can perform aspects of the functions described below using special purpose hardware.
[0137] In block 1605, UE 115 or base station 105 can identify a synchronization channel that contains location information for a common control feature set within a system bandwidth. Block 1605 operations can be performed according to the methods described with reference to Figures 1 to 7. In certain examples, aspects of block 1605 operations can be performed by a synchronization channel component, as described with reference to Figures 8 to 10.
[0138] In block 1610, the UE 115 or base station 105 can identify a scan of central frequencies of the synchronization channel within the system bandwidth. Block 1610 operations can be performed
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67/80 according to the methods described with reference to Figures 1 to 7. In certain examples, aspects of the operations of block 1610 can be performed by a scanning component, as described with reference to Figures 8 to 10.
[0139] In block 1615, the UE 115 or base station 105 can identify a central frequency of the synchronization channel as one of the central frequencies of the synchronization channel in a scan of central frequencies of the synchronization channel. The operations of block 1615 can be performed according to the methods described with reference to Figures 1 to 7. In certain examples, aspects of the operations of block 1615 can be performed by a scanning component, as described with reference to Figures 8 to 10.
[0140] In block 1620, the UE 115 or base station 105 can determine a location of the common control feature set within the system bandwidth based, at least in part, on the location information. Block 1620 operations can be performed according to the methods described with reference to Figures 1 to 7. In certain examples, aspects of block 1620 operations can be performed by a common control feature component, as described with reference to Figures 8 to 10.
[0141] In block 1625, the UE 115 or base station 105 can determine a scramble sequence for one or more of a reference signal, a control signal or a data signal, for use in demodulating the resource set of common control. Block 1625 operations can be performed according to the methods described with
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68/80 reference to Figures 1 to 7. In certain examples, aspects of operations in block 1625 can be performed by a scrambling sequence identification component, as described with reference to Figures 8 to 10.
[0142] In block 1630, UE 115 or base station 105 can process one or more of the reference signal, the control signal or the data signal, based, at least in part, on the scrambling sequence. Block 1630 operations can be performed according to the methods described with reference to Figures 1 to 7. In certain examples, aspects of block 1630 operations can be performed by a signal processing component, as described with reference to Figures 8 to 10.
[0143] Figure 17 shows a flow chart illustrating a 1700 method for signal scrambling sequence techniques for wireless communications in accordance with various aspects of the present disclosure. The 1700 method operations can be deployed by an UE 115 or base station 105 or its components as described in this document. For example, method 1700 operations can be performed by a scramble sequence manager as described with reference to Figures 8 to 10. In some examples, a UE 115 or base station 105 can execute a set of codes to control the functional elements of the device to perform the functions described below. In addition or alternatively, the UE 115 or the base station 105 can perform aspects of the functions described below using special purpose hardware.
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69/80 [0144] In block 1705, the UE 115 or base station 105 can identify a synchronization channel that contains location information for a common control feature set within a system bandwidth. Block 1705 operations can be performed according to the methods described with reference to Figures 1 to 7. In certain examples, aspects of block 1705 operations can be performed by a synchronization channel component, as described with reference to Figures 8 to 10.
[0145] In block 1710, the UE 115 or base station 105 can determine a location of the common control feature set within the system bandwidth based, at least in part, on the location information. Block 1710 operations can be performed according to the methods described with reference to Figures 1 to 7. In certain examples, aspects of block 1710 operations can be performed by a common control feature component, as described with reference to Figures 8 to 10.
[0146] In block 1715, UE 115 or base station 105 can identify a cell ID and a range or subframe index for the common control resource set. The operations of block 1715 can be performed according to the methods described with reference to Figures 1 to 7. In certain examples, aspects of the operations of block 1715 can be performed by a range index / subframe component, as described with reference Figures 8 to 10.
[0147] In block 1720, UE 115 or base station
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105 can identify a reference RE location within the system bandwidth. Block 1720 operations can be performed according to the methods described with reference to Figures 1 to 7. In certain examples, aspects of block 1720 operations can be performed by a scrambling sequence identification component, as described with reference Figures 8 to 10.
[0148] In block 1725, UE 115 or base station 105 can generate a scramble sequence based, at least in part, on the cell ID, subframe or interval index and the reference RE location. The operations of the 1725 block can be performed according to the methods described with reference to Figures 1 to 7. In certain examples, aspects of the operations of the 1725 block can be performed by a scrambling sequence identification component, as described with reference to Figures 8 to 10. In some examples, the identification of the reference ER location may comprise identifying a constant fixed deviation based, at least in part, on at least one of a PBCH or ISMS.
[0149] In block 1730, UE 115 or base station 105 can apply the scramble sequence to reference signal REs starting at the reference RE location based on the generated scramble sequence. The operations of the 1730 block can be performed according to the methods described with reference to Figures 1 to 7. In certain examples, aspects of the operations of the 1730 block can be performed by a process processing component.
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71/80 signal, as described with reference to Figures 8 to 10.
[0150] In block 1735, UE 115 or base station 105 can process one or more of the reference signal, the control signal or the data signal, based, at least in part, on the scrambling sequence. The operations of the 1735 block can be performed according to the methods described with reference to Figures 1 to 7. In certain examples, aspects of the operations of the 1735 block can be performed by a signal processing component, as described with reference to the Figures 8 to 10.
[0151] It should be noted that the methods described above describe possible deployments, and that operations and steps can be rearranged or otherwise modified and that other deployments are possible. In addition, aspects from two or more methods can be combined.
[0152] The techniques described in this document can be used for several wireless communications systems, such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA) , orthogonal frequency division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA) and other systems. The terms system and network are often used interchangeably. A code division multiple access system (CDMA) can implement radio technology such as CDMA2000, Universal Terrestrial Radio Access (UTRA), etc. CDMA2000 covers the IS-2000, IS-95 and IS-856 standards. IS2000 Versions can be commonly referred to as CDMA2000 IX, IX,
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72/80 etc. IS-856 (TIA-856) is commonly referred to as CDMA2000 lxEV-DO, High Rate Packet Data (HRPD), etc. UTRA includes Broadband CDMA (WCDMA) and other CDMA variants. The time division multiple access system (TDMA) can deploy radio technology like the Global System for Mobile Communications (GSM).
[0153] An orthogonal frequency division (OFDMA) multiple access system can deploy radio technology such as Ultra-Mobile Broadband (UMB), Evolved UTRA (E-UTRA), Institute of Electrical and Electronic Engineers (IEEE) 802.11 (Wi -Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, etc. UTRA and E-UTRA are part of the Universal Mobile Telecommunication System (UMTS). 3GPP Long Term Evolution (LTE) and Advanced LTE (LTEA) are versions of the Universal Mobile Telecommunications System (UMTS) that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, NR and Global System for Mobile Communication (GSM) are described in documents from the organization called the Third Generation Partnership Project (3GPP). CDMA2000 and UMB are described in the documents of an organization called the Third Generation Partnership Project 2 (3GPP2). The techniques described in this document can be used for the radio systems and technologies mentioned above, as well as other radio systems and technologies. Although aspects of an LTE or NR system can be described for the purpose of exemplification and LTE or NR terminology can be used in much of the description, the techniques described in this document are applicable in addition to LTE or NR applications. .
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73/80 [0154] In LTE / LTE-A networks, including such networks described in this document, the term evolved node (eNB) can be generally used to describe base stations. The wireless communication system or systems described in this document may include a heterogeneous NR or LTE / LTE-A network in which different types of evolved B-node (eNBs) provide coverage for different geographic regions. For example, each eNB, gNB or base station can provide communication coverage for a macrocell, a small cell or other types of cell. The term cell that can be used to describe a base station, a carrier or component carrier associated with a base station, or a coverage area (eg, sector, etc.) of a carrier or base station, depending on of the context.
[0155] Base stations may include or may be mentioned by those skilled in the art as a transceiver base station, a radio base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB), next generation NodeB (gNB), domestic NodeB, domestic eNodeB or some other suitable terminology. The geographic coverage area for a base station can be divided into sectors that make up only a portion of the coverage area. The wireless communications systems or systems described in this document may include base stations of different types (for example, macrocell or small cell base stations). The UEs described in this document may be able to communicate with various types of base stations and network equipment that include macro
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74/80 eNBs, small cell eNBs, gNBs, relay base stations and the like. There may be overlapping geographic coverage areas for different technologies.
[0156] A macrocell generally covers a relatively large geographical area (for example, several kilometers in a radius) and can allow unrestricted access by UEs with service subscriptions with the network provider. A small cell is a lower power base station, compared to a macrocell, which can operate in the same or different frequency bands (for example, licensed, unlicensed, etc.) as macrocells. Small cells can include picocells, femtocells and microcells according to several examples. A picocell, for example, can cover a small geographical area and can allow unrestricted access by UEs with service subscriptions with the network provider. A femtocell can also cover a small geographical area (for example, a residence) and can provide restricted access for UEs that have an association with the femtocell (for example, UEs in a closed subscriber group (CSG), UEs for users residence and the like). An eNB for a macrocell can be referred to as an eNB macro. A small cell eNB can be referred to as a small cell eNB, an eNB peak, an eNB femto, or a domestic eNB. An eNB can support one or multiple (for example, two, three, four and the like) cells (for example, component carriers).
[0157] The wireless communications systems or systems described in this document may support synchronous or asynchronous operation. For synchronous operation, the
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75/80 base stations can have similar frame timing and transmissions from different base stations can be approximately time aligned. For asynchronous operation, base stations may have different frame timing and transmissions from different base stations may not be time-aligned. The techniques described in this document can be used for synchronous or asynchronous operations.
[0158] The downlink transmissions described in this document can also be called progressive link transmissions, while the uplink transmissions can also be called backlink transmissions. Each communication link described in this document that includes, for example, wireless communication system 100 and 200 of Figures 1 and 2, can include one or more carriers, where each carrier can be a signal consisting of multiple subcarriers (for example , waveform signals of different frequencies).
[0159] The description presented above in this document, together with the accompanying drawings, describes exemplary configurations and does not represent all examples that can be implemented or that are within the scope of the claims. The term exemplifier, used in this document, means that it serves as an example, occurrence or illustration, and not preferential or advantageous over the other examples. The detailed description includes specific details for the purpose of providing an understanding of the techniques described. These techniques, however, can be practiced without these
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76/80 specific details. In some cases, well-known structures and devices are shown in the form of a block diagram to avoid hiding the concepts of the examples described.
[0160] In the attached Figures, components or similar characteristics can have the same reference identification. In addition, several components of the same type can be distinguished by following the reference mark with a dash and a second mark that distinguishes between similar components. If only the first reference identification is used in the specification, the description is applicable to any of the similar components that have the same first reference identification regardless of the second reference identification.
[0161] The information and signals described in this document can be represented using any one of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols and integrated circuits that can be mentioned throughout the above description can be represented by voltages, currents, electromagnetic waves, particles or magnetic fields, particles or optical fields or any combination thereof.
[0162] The various blocks and illustrative modules described in conjunction with the disclosure in this document can be deployed or performed with a general purpose processor, DSP, ASIC, FPGA or other programmable logic device, transistor logic or
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77/80 discrete door, discrete hardware components or any combination thereof designed to perform the functions described in this document. A general purpose processor can be a microprocessor, however, alternatively the processor can be any conventional processor, controller, microcontroller or state machine. A processor can also be deployed as a combination of computing devices (for example, a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core or any other type of configuration).
[0163] The functions described in this document can be implemented in hardware, software executed by a processor, firmware or any combination thereof. If implemented in software run by a processor, the functions can be stored in or transmitted as one or more instructions or code in a computer-readable medium. Other examples and deployments are covered by the scope of the disclosure and the attached claims. For example, due to the nature of software, the functions described above can be implemented using software executed by a processor, hardware, firmware, wired connection or combinations of any of them. The functions deployment features can also be physically located in various positions, and can even be distributed so that portions of functions are deployed in different physical locations. In addition, as used herein, including in the claims, or as used in a list
Petition 870190063757, of 07/08/2019, p. 82/117
78/80 items (for example, a list of items preceded by a sentence such as at least one among or one or more among) indicates an inclusive list, so that, for example, a list of at least one among A, B or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). In addition, as used in this document, the phrase based on should not be interpreted as a reference to a closed set of conditions. For example, an exemplary step that is described as based on condition A can be based on condition A and condition B without departing from the scope of the present disclosure. In other words, as used in this document, the phrase based on should be interpreted in the same way as the phrase based, at least in part, on.
[0164] Computer-readable media includes both non-transitory computer storage media and communication media that include any media that facilitates the transfer of a computer program from one location to another. A non-transitory storage medium can be any available medium that can be accessed by a general purpose or specific purpose computer. By way of example, and not limitation, non-transitory computer-readable media may comprise RAM, ROM, electrically erasable, programmable read-only memory (EEPROM), compact disc (CD-ROM) or other optical disc storage, storage of magnetic disk or other magnetic storage devices or any other non-transitory media that can be used to load or store program code medium
Petition 870190063757, of 07/08/2019, p. 83/117
79/80 desired in the form of instructions or data structures and which can be accessed by a special purpose or general purpose computer, or a special purpose or general purpose processor. In addition, any connection is properly called a computer-readable media. For example, if the software is transmitted from a website, server or other remote source using a coaxial cable, a fiber optic cable, a twisted pair, a digital subscriber line (DSL) or wireless technologies such as infrared, radio and microwave, then coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) or wireless technologies such as infrared, radio and microwave are included in the definition of medium. The magnetic disk and optical disk, as used in this document, include CD, laser disk, optical disk, digital versatile disk (DVD), floppy disk and Blu-ray disk, in which magnetic disks normally reproduce data in a magnetic way, while optical discs reproduce data optically with lasers. The combinations of the above are also included in the scope of computer-readable media.
[0165] The description in this document is provided to enable an element skilled in the art to produce or use the disclosure. Various modifications to the disclosure will become readily apparent to those skilled in the art and the generic principles defined in this document can be applied to other variations without departing from the scope of the disclosure. Accordingly, the disclosure is not intended to be limited to the examples and designs described in this document, but
Petition 870190063757, of 07/08/2019, p. 84/117
80/80 must be compatible with the broadest scope consistent with the principles and innovative features revealed in this document.

权利要求:
Claims (34)
[1]
1. Method for wireless communications comprising:
identify a synchronization channel that contains location information for a common control feature set within a system bandwidth;
determining a location of the common control feature set within the system bandwidth based, at least in part, on location information;
determining a scrambling sequence for one or more of a reference signal, a control signal or a data signal, for use in demodulating the common control feature set; and processing one or more of the reference signal, the control signal or the data signal, based, at least in part, on the scrambling sequence.
[2]
A method according to claim 1, which further comprises:
identify a central frequency of the synchronization channel, and where the scrambling sequence for one or more of the reference signal, the control signal or the data signal, is determined based, at least in part, on the central frequency of the synchronization channel.
[3]
Method according to claim 2, wherein the central frequency of the synchronization channel is different from a central frequency of the system bandwidth.
[4]
4. Method according to claim 1, in which the scrambling sequence for one or more of the signal
Petition 870190063757, of 07/08/2019, p. 86/117
2/11 reference, the control signal or the data signal, is determined independently of a central frequency of the synchronization channel or a central frequency of the system bandwidth.
[5]
A method according to claim 1, which further comprises:
determine a cell ID and a subframe or range index for the common control feature set; and determining the scrambling sequence for one or more of the reference signal, the control signal or the data signal, based on the cell ID and subframe or interval index.
[6]
A method according to claim 5, wherein the subframe or interval index is based on a reference numerology of a plurality of numerologies available for wireless transmissions within the system bandwidth.
[7]
Method according to claim 6, wherein the reference numerology corresponds to a pitch spacing of 15 kHz or multiples thereof.
[8]
A method according to claim 1, which further comprises:
identifying a scan of center frequencies of synchronization channel within the system bandwidth; and identifying a center frequency of the sync channel as one of the center frequencies of the sync channel in the center frequency scan
Petition 870190063757, of 07/08/2019, p. 87/117
3/11 channel sync.
[9]
9. Method according to claim 1, wherein
processing one or more of the reference signal, O control signal or the data signal comprises:identify a cell ID and a index in subframe or range associated with the set of resource in common control; identify a frequency central of channel in
synchronization; generating the scrambling sequence based, at least in part, on the cell ID, the subframe or interval index and the central frequency of the synchronization channel; and applying the scramble sequence to a signal pattern of one or more of the reference signal, the control signal or the data signal.
[10]
A method according to claim 9, wherein processing one or more of the reference signal, the control signal or the data signal further comprises:
identify a reference resource element (RE) associated with a received signal; and filling in the scrambling sequence for REs of one or more of the reference signal, the control signal or the data signal, starting at the reference RE based on the generated scrambling sequence.
[11]
A method according to claim 10, wherein the identification of the reference ER comprises identifying a constant fixed deviation based, at least on
Petition 870190063757, of 07/08/2019, p. 88/117
4/11 part, in at least one of a physical broadcast channel (PBCH) or remaining minimum system information (ISMS).
[12]
12. The method of claim 1, which further comprises:
identify that the common control feature set is transmitted on a second carrier that is different from a first carrier used to transmit the synchronization channel;
identifying a central frequency of a second synchronization channel transmitted on the second carrier; and determining the scrambling sequence for one or more of the reference signal, the control signal or the data signal, for use in demodulating the common control feature set based on the central frequency of the second synchronization channel.
[13]
13. The method of claim 1, which further comprises:
identify a cell ID and a subframe or range index for the common control feature set;
identify a reference resource element (RE) location within the system bandwidth;
generate the scramble sequence based, at least in part, on the cell ID, the subframe or interval index and the reference ER location; and applying the scramble sequence to reference signal REs starting at the reference RE location based on the generated scramble sequence.
Petition 870190063757, of 07/08/2019, p. 89/117
5/11
[14]
14. The method of claim 13, wherein identifying the reference ER location comprises identifying a constant fixed deviation based, at least in part, on at least one of a physical diffusion channel (PBCH) or information Minimum system requirements (ISMS).
[15]
A method according to claim 13, which further comprises:
identify a scan of central frequencies channel synchronization inside the width band in system; identify an first frequency central in channel synchronization like the location use of RE of reference
within the system bandwidth.
[16]
16. The method of claim 15, wherein the first center frequency of the synchronization channel is selected based on an index of the scan of central frequencies of the synchronization channel and a parameter that identifies a scrambling sequence or a length of the scrambling sequence.
[17]
17. A wireless communication apparatus comprising: means for identifying a synchronization channel that contains location information for a common control feature set within a system bandwidth;
means to determine a location of the common control feature set within the system bandwidth based, at least in part, on
Petition 870190063757, of 07/08/2019, p. 90/117
6/11 location;
means for determining a scramble sequence for one or more of a reference signal, a control signal or a data signal, for use in demodulating the common control feature set; and means for processing one or more of the reference signal, the control signal or the data signal, based, at least in part, on the scrambling sequence.
[18]
An apparatus according to claim 17, which further comprises:
means for identifying a central frequency of the synchronization channel, and in which the scrambling sequence for one or more of the reference signal, the control signal or the data signal, is determined based, at least in part, on the frequency center of the synchronization channel.
[19]
An apparatus according to claim 18, wherein the central frequency of the synchronization channel is different from a central frequency of the system bandwidth.
[20]
Apparatus according to claim 17, wherein the scrambling sequence for one or more of the reference signal, the control signal or the data signal, is determined independently of a central frequency of the synchronization channel or a central frequency of the system bandwidth.
[21]
21. Apparatus according to claim 17, which further comprises:
Petition 870190063757, of 07/08/2019, p. 91/117
7/11 means to determine a cell ID and a subframe or range index for the common control feature set; and means for determining the scrambling sequence for one or more of the reference signal, the control signal or the data signal, based on the cell ID and subframe or range index.
[22]
Apparatus according to claim 21, wherein the subframe or interval index is based on a reference numerology of a plurality of numerologies available for wireless transmissions within the system bandwidth.
[23]
23. Apparatus according to claim 22, wherein the reference numerology corresponds to a pitch spacing of 15 kHz or multiples thereof.
[24]
24. Apparatus according to claim 17, which further comprises:
means for identifying a scan of center frequencies of synchronization channel within the system bandwidth; and means for identifying a central frequency of the synchronization channel as one of the central frequencies of the synchronization channel in the scanning of central frequencies of the synchronization channel.
[25]
An apparatus according to claim 17, wherein the means for processing one or more of the reference signal, the control signal or the data signal further comprises:
means to identify a cell ID and an index
Petition 870190063757, of 07/08/2019, p. 92/117
8/11 subframe or interval associated with the common control feature set;
means for identifying a central frequency of the synchronization channel; means for generating the scramble sequence based, at least in part, on the cell ID, the subframe or interval index and the center frequency of the synchronization channel; and means for applying the scramble sequence to a signal pattern of one or more of the reference signal, the control signal or the data signal.
[26]
26. Apparatus according to claim 25, wherein the means for processing one or more of the reference signal, the control signal or the data signal further comprises:
means for identifying a reference resource element (RE) associated with a received signal; and means for filling the scrambling sequence for REs of one or more of the reference signal, the control signal or the data signal, starting at the reference RE based on the generated scrambling sequence.
[27]
27. Apparatus according to claim 26, wherein the means for identifying the reference ER comprises identifying a constant fixed deviation based, at least in part, on at least one of a physical diffusion channel (PBCH) or information Minimum system requirements (ISMS).
[28]
28. Apparatus according to claim 17, which further comprises:
means to identify that the feature set of
Petition 870190063757, of 07/08/2019, p. 93/117
9/11 common control is transmitted on a second carrier which is different from a first carrier used to transmit the synchronization channel;
means for identifying a central frequency of a second synchronization channel transmitted on the second carrier; and means for determining the scrambling sequence for one or more of the reference signal, the control signal or the data signal, for use in demodulating the common control feature set based on the central frequency of the second synchronization channel.
[29]
29. Apparatus according to claim 17, which further comprises:
means for identifying a cell ID and a subframe or range index for the common control resource set;
means for identifying a reference resource element (RE) location within the system bandwidth;
means for generating the scramble sequence based, at least in part, on the cell ID, the subframe or interval index and the reference RE location; and means for applying the scrambling sequence to reference signal REs starting at the location of the reference RE based on the generated scrambling sequence.
[30]
Apparatus according to claim 29, wherein the means for identifying the reference ER location
Petition 870190063757, of 07/08/2019, p. 94/117
10/11 comprises a means of identifying a constant fixed deviation based, at least in part, on at least one of a physical diffusion channel (PBCH) or remaining minimum system information (ISMS).
[31]
An apparatus according to claim 29, further comprising: means for identifying a scan of central frequencies of synchronization channel within the system bandwidth;
means for identifying a first center frequency of the synchronization channel as the location of the reference RE within the system bandwidth.
[32]
32. The apparatus of claim 31, wherein the first center frequency of the synchronization channel is selected based on an index of the scan of central frequencies of the synchronization channel and a parameter that identifies a scrambling sequence or a length of the scrambling sequence.
[33]
33. Apparatus for wireless communication in a system comprising: a processor;
memory in electronic communication with the processor; instructions stored in memory and operational, when executed by the processor, to make the device:
identify a synchronization channel that contains location information for a common control feature set within a system bandwidth;
determine a location of the common control feature set within the system bandwidth with
Petition 870190063757, of 07/08/2019, p. 95/117
11/11 base, at least in part, on location information; determine a scramble sequence for one or more of a reference signal, a control signal or a data signal, for use in demodulating the common control feature set; and process one or more of the reference signal, the control signal or the data signal, based, at least in part, on the scrambling sequence.
[34]
34. Non-transitory computer-readable media that stores code for wireless communication, the code comprising instructions executable by a processor to:
identify a synchronization channel that contains location information for a common control feature set within a system bandwidth;
determining a location of the common control feature set within the system bandwidth based, at least in part, on location information;
determining a scrambling sequence for one or more of a reference signal, a control signal or a data signal, for use in demodulating the common control feature set; and processing one or more of the reference signal, the control signal or the data signal, based, at least in part, on the scrambling sequence.

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法律状态:
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