sync signal blocks

专利摘要:
a base station can transmit a plurality of synchronization signals in a wireless communication system. the synchronization signals can be multiplexed to form a block of ss that is transmitted as part of a burst of ss. each ss block can be identifiable based on ss block index information carried by its corresponding synchronization signals. in one aspect, a synchronization signal that carries ss block index information is multiplexed by frequency division with a secondary synchronization signal from the ss block. in one aspect, the synchronization signal that carries the ss block index information comprises a dm-rs for a pbch of the ss block. a eu can use the ss block index information to identify a beam on which the ss block is transmitted. the eu can use the sync signals as part of a cell search procedure by which it acquires time and frequency synchronization with the base station.
公开号:BR112019016848A2
申请号:R112019016848
申请日:2018-02-16
公开日:2020-04-07
发明作者:Sun Haitong；Ly Hung；Luo Tao
申请人:Qualcomm Inc；
IPC主号:

专利说明:

SYNCHRONIZATION SIGNAL BLOCKS
CROSS REFERENCE TO RELATED ORDER (S) [0001]
This claim claims the benefit of
US Provisional Order No. 62 / 459,973, entitled TERTIARY SYNCHRONIZATION SIGNAL DESIGN CONSIDERATIONS and filed on February 16, 2017, US Provisional Order No. 62 / 462,258, entitled TERTIARY SYNCHRONIZATION SIGNAL DESIGN CONSIDERATIONS and filed on February 22, 2017 2017, and US Patent Application N15 / 897,985, entitled SYNCHRONIZATION SIGNAL BLOCKS and filed on February 15, 2018, which are expressly incorporated by reference here in their entirety.
FUNDAMENTALS
Field of the Technique [0002] The present disclosure generally relates to communication systems, and more particularly, to synchronization signal blocks (SS) that include beam index information.
Introduction [0003]
Wireless communication systems are widely deployed to provide various telecommunications services, such as telephony, video, data, messages and broadcasts. Typical wireless communication systems can employ multiple access technologies capable of supporting communication with multiple users, sharing available system resources. Examples of such multiple access technologies include code division multiple access systems (CDMA), time division multiple access systems (TDMA), access systems
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2/79 frequency division multiple (FDMA), orthogonal frequency division multiple access systems (OFDMA), single carrier frequency division multiple access systems (SC-FDMA) and synchronous division multiple access systems by time division (TD-SCDMA).
[0004] These multiple access technologies have been adopted in various telecommunications standards to provide a common protocol that allows different wireless devices to communicate at a municipal, national, regional and even global level. An example of a telecommunication standard is the Nova Rádio 5G (NR). NR 5G is part of a continuous evolution of mobile broadband promulgated by the Third Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (for example, with Internet of Things (IoT)) and other requirements. Some aspects of NR 5G may be based on the 4G Long Term Evolution (LTE) standard. There is a need for further improvements in the NR 5G technology. These improvements may also apply to other multi-access technologies and to the telecommunication standards that employ these technologies.
SUMMARY [0005] The following is a simplified summary of one or more aspects, in order to provide a basic understanding of such aspects. This summary is not a comprehensive overview of all aspects covered, and is not intended to identify key or critical elements of all aspects, nor to outline the scope of any or all
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3/79 aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified way, as a prelude to the more detailed description presented later.
[0006] Synchronization within a wireless communication system can be performed using synchronization signals. In LTE and NR systems, such synchronization signals can include a primary synchronization signal (PSS), a second synchronization signal (SSS) and a physical transmission channel (PBCH). In some systems, the sync signals can be multiplexed into one or more sync signal blocks (SS blocks). Different SS blocks can be identified according to SS block identifiers, which, in turn, can correspond to different beams in which the SS blocks are transmitted. As disclosed herein, the multiplexing of synchronization signals in an SS block can be performed in such a way that a secondary synchronization signal (SSS) that can carry information about a physical layer cell identity group number and / or information radio frame timings for a base station are multiplexed by frequency division with one or more SS block synchronization signals with the provided SS block identifier.
[0007] In one aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus can be configured to determine a sync signal index (SS) for an SS block, the SS block comprising a
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4 / Ί °>
plurality of multiplexed sync signals for transmission on predetermined resources and generate a first SS of the plurality of sync signals based at least in part on the SS index. The apparatus can be configured for frequency division multiplexing the first SS with at least one second synchronization signal (SSS) from the SS block, wherein the SSS comprises a secondary synchronization signal that carries information about a group number of physical layer cell identity to the base station and transmitting the SS block including the first SS generated based at least in part on the frequency division of the SS block identifier multiplexed with the SSS in the predetermined resources.
[0008]
In another aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be configured to receive a synchronization block signal with a first synchronization signal (SS) comprising an SS index for the SS block frequency division multiplexed with a second synchronization signal (SSS) in predetermined resources, wherein the SSS transports information about a physical layer cell identity group number to a base station. The device can be configured to demultiplex the first SS and SSS and obtain the SS index and information about the physical layer cell identity group number for the base station and communicate with the base station based on information from of the SS block.
[0009]
For the fulfillment of previous purposes
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5/79 and related, the one or more aspects comprise the characteristics described below completely and particularly pointed out in the claims. The description that follows and the accompanying drawings present in detail certain illustrative features of one or more aspects. These characteristics are indicative, however, of just a few of the various ways in which the principles of various aspects can be employed, and this description is intended to include all of these aspects and their equivalents.
BRIEF DESCRIPTION OF THE DRAWINGS [0010] Figure 1 is a diagram that illustrates an example of a wireless communication system and an access network.
[0011] Figures 2A, 2B, 20, and 2D are diagrams that illustrate examples of a DL subframe, DL channels within the DL subframe, a UL subframe, and UL channels within the UL subframe, respectively, for a 5G / NR frame structure.
[0012] Figure 3 is a diagram that illustrates an example of a base station and user equipment (UE) in an access network.
[0013] Figures 4A to 4G are diagrams that illustrate an example of the transmission of beamforming signals between a base station and a UE.
[0014] Figure 5 is a diagram illustrating an example of an SS burst set.
[0015] Figure 6 is a diagram illustrating an example of frequency division multiplexing of an SS with a PSS in an SS block according to the
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6/79 systems and methods described here.
[0016] Figure 7 is a diagram that illustrates an example of time division multiplexing of one SS with another SS in an SS block according to the systems and methods described here.
[0017] Figure 8 is a diagram illustrating an example of frequency division multiplexing from one SS with another SS in an SS block according to the systems and methods described here.
[0018] Figure 9 is a diagram that illustrates another example of frequency division multiplexing from one SS with another SS in an SS block according to the systems and methods described here.
[0019] Figure 10 is a diagram illustrating another example of frequency division multiplexing from one SS with another SS in an SS block according to the systems and methods described here.
[0020] Figure 11 is a diagram illustrating another example of frequency division multiplexing from one SS to another SS in an SS block according to the systems and methods described here.
[0021] Figure 12 is a flow chart of a wireless communication method according to the systems and methods described here.
[0022] Figure 13 is a flow chart of a wireless communication method according to the systems and methods described here.
[0023] Figure 14 is a conceptual data flow diagram that illustrates the data flow between different media / components in a device
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7/79 exemplificative.
[0024] Figure 15 is a diagram that illustrates an example of a hardware implementation for a device using a processing system.
[0025] Figure 16 is a conceptual data flow diagram that illustrates the data flow between different media / components in an exemplary device.
[0026] Figure 17 is a diagram that illustrates an example of a hardware implementation for a device using a processing system.
DETAILED DESCRIPTION [0027] The detailed description presented below in connection with the accompanying drawings is intended as a description of various configurations and is not intended to represent the only configurations in which the concepts described here can be practiced. The detailed description includes specific details for the purpose of providing a complete understanding of various concepts. However, it will be evident to those skilled in the art that these concepts can be practiced without these specific details. In some cases, well-known structures and components are shown in the form of a block diagram to avoid obscuring such concepts.
[0028] Various aspects of telecommunications systems will now be presented with reference to various devices and methods. These devices and methods will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, components, circuits, processes, algorithms, etc. (collectively referred to as
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8/79 elements). These elements can be implemented using electronic hardware, computer software or any combination of them. Whether these elements are implemented as hardware or software depends on the specific application and design restrictions imposed on the system as a whole.
[0029] By way of example, an element, or any part of an element, or any combination of elements can be implemented as a processing system that includes one or more processors. Examples of processors include microprocessors, microcontrollers, graphics processing units (GPUs), central processing units (CPUs), application processors, digital signal processors (DSPs), reduced instruction set computing (RISC) processors, systems in a chip (SoC), baseband processors, field programmable port arrays (FPGAs), programmable logic devices (PLDs), state machines, blocked logic, discrete hardware circuits, and other suitable hardware configured to perform the various features described throughout this disclosure. One or more processors in the processing system can run the software. The software should be interpreted broadly to mean instructions, instruction sets, code, program code, programs, subprograms, software components, applications, software applications, software packages, routines, subroutines, objects, executables, execution threads, procedures, functions, etc., whether they are called
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9/79 as software, firmware, middleware, microcode, hardware description language or otherwise.
[0030] Consequently, in one or more examples of modalities, the functions described can be implemented in hardware, software, or any combination thereof. If implemented in the software, the functions can be stored or encoded as one or more instructions or code in a computer-readable medium. Computer-readable media includes computer storage media. The storage media can be any available media that can be accessed by a computer. By way of example, and not limiting, these computer-readable media may comprise a random access memory (RAM), a read-only memory (ROM), an electrically erasable programmable ROM (EEPROM), optical disk storage, storage on magnetic disk, other magnetic storage devices, combinations of the computer-readable media types mentioned above, or any other medium that can be used to store executable computer code in the form of instructions or data structures that can be accessed by a computer.
[0031] Figure 1 is a diagram illustrating an example of a wireless communication system and an access network 100. The wireless communication system (also called a wireless wide area network (WWAN)) includes stations base 102, UE 104 and an Evolved Packet Core (EPC) 160. Base stations 102 can include macro cells (cell base station
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10/79 high power) and / or small cell base station). Macro cells include base stations. Small cells include femto cells, pico cells and microcells.
[0032] Base stations 102 (collectively referred to as the Terrestrial Radio Access Network (EUTRAN) of the Universal Mobile Telecommunications System (UMTS)) interface with EPC 160 through backhaul links 132 (for example, Si interface) . In addition to other functions, base stations 102 can perform one or more of the following functions: transferring user data, encoding and decoding radio channels, integrity protection, header compression, mobility control functions (for example , handover, dual connectivity), intercellular interfering intercoordination, connection configuration and release, load balancing, distribution for non-access layer messages (NAS), NAS node selection, synchronization, radio access network (RAN) sharing , multicast multimedia broadcasting service (MBMS), tracking subscribers and equipment, managing RAN information (RIM), paging, positioning and message delivery. Base stations 102 can communicate directly or indirectly (for example, via EPC 160) with each other over backhaul links 134 (for example, interface X2). Backhaul 134 links can be wired or wireless.
[0033] Base stations 102 can communicate wirelessly with UE 104. Each base station 102 can provide communication coverage for an area of
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11/79 geographic coverage 110. There may be overlapping geographical coverage areas 110. For example, small cell 102 'may have coverage area 110' that overlaps coverage area 110 of one or more macro base stations 102. One network that includes small cells and macro can be known as a heterogeneous network. A heterogeneous network may also include the Home Evolved Bs Node (eNBs) (HeNBs), which can provide service to a restricted group known as a closed subscriber group (CSG). Communication links 120 between base station 102 and UEs 104 may include uplink (UL) transmissions (also referred to as reverse link) from UE 104 to base station 102 and / or downlink (DL) transmissions ( also referred to as a direct link) from a base station 102 to a UE 104. Communication links 120 can use multiple input and multiple output antenna technology (MIMO), including spatial multiplexing, beam shaping, and / or diversity transmission. Communication links can be through one or more carriers. Base stations 102 / UEs 104 can use spectrum up to Y MHz bandwidth (for example, 5, 10, 15, 20, 100 MHz) per carrier allocated in a carrier aggregation of up to a total of Yx MHz (component carriers x) used for transmission in each direction. The carriers may or may not be adjacent to each other. The allocation of carriers can be asymmetric in relation to DL and UL (for example, more or less carriers can be allocated to DL than to UL). Component carriers may include a primary component carrier and one or more carriers
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12/79 secondary components. A primary component carrier can be termed as a primary cell (PCell) and a secondary component carrier can be termed as a secondary cell (SCell).
[0034]
Certain UEs 104 can communicate with each other using device to device (D2D) 192 communication link. The D2D 192 communication link can use the DL / UL WWAN spectrum. The D2D 192 communication link can use one or more side link channels, such as a physical side link broadcast channel (PSBCH), a physical side link discovery channel (PSDCH), a physical side link shared channel (PSSCH), and a physical side link control channel (PSCCH). D2D communication can be through a variety of wireless D2D communication systems, such as, for example, FlashLinQ, WiMedia, Bluetooth, ZigBee, Wi-Fi based on the IEEE 802.11 standard. LTE, or NR.
[0035]
The wireless communication system may also include a Wi-Fi access point (AP) 150 in communication with Wi-Fi stations (STAs) 152 via communication links 154 in an unlicensed frequency spectrum of 5 GHz. When communicating on an unlicensed frequency spectrum, STAs 152 / AP 150 can perform a clear channel assessment (CCA) prior to communication in order to determine if the channel is available.
[0036]
The small cell 102 'can operate on a licensed and / or unlicensed frequency spectrum.
When operating on an unlicensed frequency spectrum, small cell 102 'can employ NR and use
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13/79 the same 5 GHz unlicensed frequency spectrum as used by Wi-Fi AP 150. The small cell 102 ', using NR in an unlicensed frequency spectrum, can increase coverage / or increase the capacity of the network. access.
[0037] gNodeB (gNB) 180 can operate at millimeter wave frequencies (mmW) and / or nearby mmW frequencies in communication with UE 104. When gNB 180 operates at frequencies of mmW or mmW nearby, gNB 180 can be referred to as an mmW base station. The extremely high frequency (EHF) is part of the RE in the electromagnetic spectrum. The EHF has a range of 30 GHz to 300 GHz and a wavelength between 1 millimeter and 10 millimeters. The radio waves in the band can be a millimeter wave. Nearby MmW can extend up to a frequency of 3 GHz with a wavelength of 100 millimeters. The super high frequency band (SHE) extends between 3 GHz and 30 GHz, also known as centimeter wave. Communications using the mmW radio frequency band / close to the mmW radio frequency band have an extremely high loss of travel and a short range. The 180 mmW base station can use beamform 184 with UE 104 to compensate for extremely high loss of travel and short range.
[0038] EPC 160 may include a Mobility Management Entity (MME) 162, other MMEs 164, a Service Port 166, a Multicast Multimedia Broadcast Service Port (MBMS) 168, a Multicast Broadcast Service Center (BM-SC) 170, and a Packet Data Network Port (PDN) 172. The MME 162 can be in
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14/79 communication with a Home Subscriber Server (HSS) 174. The MME 162 is the control node that processes the signaling between UEs 104 and EPC 160. Generally, MME 162 provides bearer and connection management. All user Internet Protocol (IP) packets are transferred via Service Port 166, which in turn is connected to PDN Port 172. PDN Port 172 provides UE IP address allocation as well as other functions. PDN Port 172 and BM-SC 170 are connected to IP Services 176. IP Services 176 may include the Internet, an intranet, an IP Multimedia Subsystem (IMS), a PS Broadcast Service and / or other IP services. The BM-SC 170 can provide functions for providing and delivering MBMS user services. The BM-SC 170 can serve as an entry point for transmission from the MBMS content provider, can be used to authorize and start MBMS Carrier Services within a public land mobile network (PLMN) and can be used to program MBMS transmissions. MBMS Port 168 can be used to distribute MBMS traffic to base stations 102 belonging to a Multicast Broadcast Frequency Network (MBSFN) area broadcasting a particular service, and may be responsible for session management (start / stop) and to collect billing information related to eMBMS.
[0039] The base station can also be referred to as a gNB, Node B, evolved Node B (eNB), an access point, a base transceiver station, a base radio station, a radio transceiver, a transceiver function, a set of basic services (BSS), a
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15/79 set of extended services (ESS) or some other appropriate terminology. Base station 102 provides an access point to EPC 160 for an UE 104. Examples of UE 104 include a cell phone, a smart phone, a session initiation protocol (SIP) phone, a laptop computer, a personal digital assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (for example, MP3 player), a camera, a game console, a tablet, a smart device, a dressing device, a vehicle, an electric meter, a gas pump, a large or small kitchen appliance, a health device, an implant, a monitor or any other similarly functioning device. Some of the UE 104 can be termed as loT devices (for example, parking meter, gas pump, toaster, vehicles, heart rate monitor, etc.). UE 104 may also be referred to as a station, mobile station, subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, a mobile subscriber, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, an apparatus, a user agent, a mobile client, a customer or some other suitable terminology.
[0040] With reference again to Figure 1, in certain aspects, the eNB / gNB 102/180 can be configured to multiplex a plurality of
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16/79 synchronization, including a PSS, an SSS, or a PBCH, for transmission in an SS block. For example, the device can be configured to determine a signal
synchronization (SS) for a block from SS , O SS block understanding an plurality of signals in synchronization multiplexed for transmission in predetermined resources and generate an SS gives plurality of signals in synchronization
based at least in part on the SS index. The apparatus can be configured for frequency division multiplexing the first SS with at least one second synchronization signal (SSS) from the SS block, wherein the SSS comprises a secondary synchronization signal that carries information about a group number of physical layer cell identity to the base station and transmitting the SS block including the first SS generated based at least in part on the frequency division of the SS block identifier multiplexed with the SSS in the predetermined resources (196).
[0041] Additionally, in certain aspects, the UE 104 can be configured to receive a synchronization block signal with a first synchronization signal comprising an SS index for the multiplexed SS block frequency division with a second synchronization signal (SSS) on predetermined resources, where the SSS transports information about a physical layer cell identity group number to a base station. The UE 104 can be configured to demultiplex the first SS and the SSS and obtain the SS index and information about the physical layer cell identity group number for the
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17/79 base station and communicate with the base station based on information from the SS block (198).
[0042] The SS can be used in relation to the beam conformation. The beam conformation is discussed below in relation to Figures 4A to 4G. The SS can provide a block index that can be used to determine a beam direction.
[0043] Figure 2A is a diagram 200 that illustrates an example of a DL subframe within a 5G / NR frame structure. Figure 2B is a diagram 230 that illustrates an example of channels within a DL subframe. Figure 2C is a diagram 250 that illustrates an example of a UL subframe within a 5G / NR frame structure. Figure 2D is a diagram 280 that illustrates an example of channels within a UL subframe. The 5G / NR frame structure can be FDD in which for a particular set of subcarriers (carrier system bandwidth), subframes within the set of subcarriers are dedicated to both DL and UL, or it can be TDD in which for a particular set of subcarriers (carrier system bandwidth), subframes within the set of subcarriers are dedicated to both DL and UL. In the examples provided by Figures 2A, 2C, the frame structure of 5G / NR is considered to be TDD, with subframe 4 a subframe of DL and subframe 7 a subframe of UL. Although subframe 4 is illustrated as providing only DL and subframe 7 is illustrated as providing only UL, any particular subframe can be divided into different subsets that provide both UL and DL. Note that the description
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18/79 below also applies for a 5G / NR frame structure which is FDD.
[0044]
Other wireless communication technologies may have a different frame structure and / or different channels. One frame (10 ms) can be divided into 10 subframes of equal size (1 ms). Each subframe can include one or more time partitions. Each partition can include 7 or 14 symbols, depending on the partition configuration. For partition configuration 0, each partition can include 14 symbols, and for partition configuration 1, each partition can include 7 symbols. The number of partitions within a subframe is based on the partition configuration and numerology. For partition configuration 0, different numerologies 0 to 5 allow 1, 2, 4, 8, 16, and 32 partitions, respectively, per subframe. For partition 1 configuration, different numerologies 0 to 2 allow 2, 4, and 8 partitions, respectively, per subframe. Subcarrier spacing and symbol length / duration are a function of numerology. The subcarrier spacing can be equal to 2 ^μ * 15 kKz, where g is the numerology 0-5.0 symbol length / duration is inversely related to the subcarrier spacing. Figures 2A, 2C provide an example of partition configuration 1 with 7 symbols per partition and numerology 0 with 2 partitions per subframe. Subcarrier spacing is 15 kHz and symbol life is approximately 66.7 ps.
[0045]
A resource grid can be used to represent the frame structure. Each time partition includes a resource block (RB) (also called
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19/79 as physical RBs (PRBs) that extend 12 consecutive subcarriers. The resource grid is divided into multiple resource elements (REs). The number of bits carried by each RE depends on the modulation scheme.
[0046] As illustrated in Figure 2A, some of the REs carry reference signals (pilot) (RS) to the UE (indicated as R). The RS can include demodulation RS (DM-RS) and channel status information reference signals (CSI-RS) for estimating the channel in the UE. The RS can also include beam measurement RS (BRS), beam refinement RS (BRRS), and phase tracking RS (PT-RS).
[0047] Figure 2B illustrates an example of several channels within a DL subframe of a frame. The physical control format indicator (PCFICH) channel is within the 0 symbol of partition 0, and carries a control format indicator (CFI) that indicates whether the physical downlink control channel (PDCCH) occupies 1, 2, or 3 symbols (Figure 2B illustrates a PDCCH that occupies 3 symbols). The PDCCH carries downlink control information (DCI) within one or more control channel elements (CCEs), each CCE including nine RE groups (REGs), each REG including four consecutive REs in an OFDM symbol. A UE can be configured with an enhanced UE-specific PDCCH (ePDCCH) which also carries DCI. The ePDCCH can have 2, 4, or 8 pairs of RB (Figure 2B shows two pairs of RB, each subset including a pair of RB). The hybrid automatic repeat request (ARQ) indicator (HARQ) (PHICH) channel is also within the 0 symbol of partition 0 and carries the
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20/79 HARQ (HI) indicator indicating HARQ recognition (ACK) / negative ACK (NACK) feedback based on the shared physical uplink channel (PUSCH). The primary synchronization channel (PSCH) can be within symbol 6 of partition 0 within subframes 0 and 5 of a frame. The PSCH carries a primary synchronization signal (PSS) that is used by an UE 104 to determine subframe / symbol timing and a physical layer identity. The secondary synchronization channel (SSCH) can be within symbol 5 of partition 0 within subframes 0 and 5 of a frame. The SSCH carries a secondary synchronization signal (SSS) that is used by a UE to determine a physical layer cell identity group and radio frame timing. Based on the physical layer identity and the physical layer cell identity group number, the UE can determine a physical cell identifier (PCI). Based on the PCI, the UE can determine the locations of the previously mentioned DL-RS. The physical broadcast channel (PBCH), which carries a main information block (MIB), can be logically grouped with the PSCH and SSCH to form a synchronization signal SS / PBCH block. The MIB provides several RBs in the DL system's bandwidth, a PHICH configuration, and a system frame number (SFN). The shared physical downlink channel (PDSCH) carries user data, broadcast system information not transmitted through the PBCH such as system information blocks (STBs), and paging messages.
[0048] As illustrated in Figure 2C, some of the REs carry demodulation reference signals (DM
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21/79
RS) to estimate the channel at the base station. The UE can additionally transmit audible reference signals (SRS) at the last symbol of a subframe. The SRS can have a comb frame, and a UE can transmit SRS on one of the combs. The SRS can be used by a base station to estimate channel quality to allow frequency-dependent programming on the UL.
[0049] Figure 2D illustrates an example of several channels within a UL subframe of a frame. A physical random access channel (PRACH) can be within one or more subframes within a frame based on the PRACH Configuration. PRACH can include six consecutive RB pairs within a subframe. PRACH allows the UE to perform initial access to the system and obtain UL synchronization. A physical uplink control channel (PUCCH) can be located at the edges of the UL system bandwidth. The PUCCH contains uplink control (UCI) information, such as scheduling requests, a channel quality indicator (CQI), a pre-coding matrix indicator (PMI), a rating indicator (RI), and feedback from HARQ ACK / NACK. The data that carry PUSCH, and can additionally be used to carry a buffer status report (BSR), a power headroom report (PHR) and / or UCI.
[0050] Figure 3 is a block diagram of a base station 310 in communication with a UE 350 in an access network. In the DL, EPC 160 IP packets can be delivered to a 375 controller / processor. The 375 controller / processor implements layer 3 and
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22/79 layer 2 functionality. Layer 3 includes a radio resource control layer (RRC) and layer 2 includes a packet data convergence protocol (PDCP) layer, a radio link control layer (RLC) and a medium access control (MAC) layer. The 375 controller / processor provides RRC layer functionality associated with the transmission of system information (for example, MIB, STBs), RRC connection control (for example, RRC connection paging, RRC connection establishment, modification of RRC connection and RRC connection release) technology mobility (RAT) and measurement configuration for the UE measurement report; The PDCP layer functionality associated with header compression / decompression, security (encryption, decryption, integrity protection, integrity checking) and delivery support functions; The RLC layer functionality associated with the transfer of PDUs (top layer), error correction by ARQ, concatenation, segmentation and reassembly of RLC service data units (SDUs), re-segmentation of RLC data PDUs and data reordering of PDLC RLC; and the MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs into transport blocks (TBs), demultiplexing of MAC MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority treatment and prioritization of logical channel.
[0051] The transmit processor (TX) 316 and the receive processor (RX) 370 implement the
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23/79 layer 1 functionality associated with various signal processing functions. Layer 1, which includes a physical layer (PHY), can include error detection on transport channels, encoding / decoding of transport channels, interleaving, match rate, mapping on physical channels, modulation / demodulation of channels, and processing of MIMO antenna. The TX 316 processor manipulates the mapping to signal constellations based on various modulation schemes (for example, binary phase shift switch (BPSK), quadrature phase shift switch (QPSK), M phase shift switch (M- PSK), M-quadrature amplitude modulation (M-QAM)). The coded and modulated symbols can then be divided into parallel streams. Each stream can then be mapped to an OFDM subcarrier, multiplexed with a reference signal (for example, pilot) in the time and / or frequency domain, and then combined using an Inverse Fourier Transform (IFFT) to produce a physical channel carrying an OFDM symbol stream in the time domain. The OFDM stream is spatially precoded to produce multiple spatial streams. The channel estimates of a channel estimator 374 can be used to determine the coding and modulation scheme, as well as for spatial processing. The channel estimate can be derived from a reference signal and / or feedback from the channel condition transmitted by the UE 350. Each spatial stream can then be supplied to a different antenna 320 via a separate transmitter 318TX. Each 318TX transmitter can modulate an RE carrier with a corresponding flow
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24/79 space for transmission.
[0052] In one aspect, one or more of the TX 316 processor and the 375 controller / processor can generate SS blocks. The one or more processors (for example, the TX 316 processor and / or the 375 controller / processor) can cause the SS blocks to be transmitted, for example, by one or more transmitters of the 318TX transmitter.
[0053] In UE 350, each 354RX receiver receives a signal through its respective antenna 352. Each 354RX receiver retrieves modulated information in an RE carrier and supplies the information to the receiving (RX) 356 processor. The TX 368 processor and the RX 356 processor implements layer 1 functionality associated with various signal processing functions. The RX 356 processor can perform spatial processing on the information to retrieve any spatial streams destined for the UE 350. If multiple spatial streams are destined for the UE 350, they can be combined by the RX 356 processor into a single OFDM symbol stream. The RX 356 processor then converts the OFDM symbol stream from the time domain to the frequency domain using a Fast Fourier Transform (FFT). The frequency domain signal comprises a separate stream of OFDM symbols for each OFDM signal subcarrier. The symbols on each subcarrier, and the reference signal, are retrieved and demodulated determining the most likely signal constellation points transmitted by base station 310. These flexible decisions can be based on channel estimates calculated by the estimator of
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25/79 channel 358. Smooth decisions are then decoded and deinterleaved to retrieve the data and control signals that were originally transmitted by base station 310 on the physical channel. The data and control signals are then supplied to the 359 controller / processor, which implements layer 3 and layer 2 functionality.
[0054] In one aspect, the 354RX receiver can receive SS blocks. One or more of the RX 356 processor and the 359 controller / processor can process the SS blocks to acquire a time / hour synchronization, for example, using one or more of the PSS, SSS and SS. The UE 350 can perform an initial acquisition based on the SS block. Consequently, as described herein, SS signals (PSS, SSS, PBCH and / or other SS) can be used to perform synchronization and / or identification of cells in a communication system. In addition, shuffling in different ways, as described here, can provide better separation. How SS is multiplexed can impact detection complexity, time resolution, range of index values, etc. In one aspect, a UE can communicate with a base station once, the SS block index information is obtained and the time is defined based on PSS / SSS.
[0055] The controller / processor 359 can be associated with a 360 memory that stores program codes and data. 360 memory can be termed as a computer-readable medium. At UL, the 359 controller / processor provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression and
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26/79 control signals to retrieve IP packets from EPC 160. The 359 controller / processor is also responsible for error detection using an ACK and / or NACK protocol to support HARQ operations.
[0056 ] Similar to the functionality described in connection with the transmission of DL through base station 310, O 359 controller / processor provides functionality in layer of RRC associated with information acquisition of system (per example, MIB, STBs), RRC connections and
measurement report; PDCP layer functionality associated with header compression / decompression and security (encryption, decryption, integrity protection, integrity verification); Functionality of the RLC layer associated with the transfer of top layer PDUs, error correction through ARQ, concatenation, segmentation and reassembly of RLC SDRs, re-segmentation of RLC data PDUs and rearrangement of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs in TBs, demultiplexing of MAC SDUs from TBs, scheduling information reports, correcting errors through HARQ, priority treatment and prioritization of logical channels.
[0057] Channel estimates derived by a channel estimator 358 from a reference or feedback signal transmitted by base station 310 can be used by the TX 368 processor to select the appropriate coding and modulation schemes, and to facilitate spatial processing. The spatial flows generated by the
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27/79 TX processor 368 can be supplied to different antennas 352 via separate 354TX transmitters. Each 354TX transmitter can modulate an RF carrier with a corresponding spatial flow for transmission.
[0058] The UL transmission is processed at base station 310 in a similar manner to that described in connection with the receiving function on UE 350. The 318RX receiver receives a signal through its respective antenna 320. Each 318RX receiver retrieves the information modulated in an RF carrier and provides the information for an RX 370 processor.
[0059] The 375 controller / processor can be associated with a 376 memory that stores program codes and data. Memory 376 can be termed as a computer-readable medium. At UL, the 375 controller / processor provides demultiplexing between transport and logic channels, packet reassembly, decryption, header decompression, control signal processing to retrieve IP packets from the UE 350. The 375 controller / processor IP packets can be supplied to EPC 160. The 375 controller / processor is also responsible for error detection using an ACK and NACK protocol to support HARQ operations.
[0060] Figures 4A to 4G are diagrams illustrating an example of the transmission of beam signals between a base station and a UE. The base station 402 can be incorporated as a base station in an mmW system (mmW base station), such as a gNB or 180 mmW base station. In one aspect, the base station 402
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28/79 can be placed with another base station, such as an eNB / gNB, a cellular base station or another base station (for example, a base station configured to communicate in a sub-6 GHz band). While some beams are illustrated as adjacent to each other, such an arrangement may be different in different respects (for example, beams transmitted during the same symbol may not be adjacent to each other). In addition, the number of bundles illustrated should be considered as illustrative.
[0061] The extremely high frequency (EHF) is part of the RE in the electromagnetic spectrum. The EHF has a range of 30 GHz to 300 GHz and a wavelength between 1 millimeter and 10 millimeters. The radio waves in the band can be called millimeter waves. The nearby mmW can extend up to a frequency of 3 GHz with a wavelength of 100 millimeters (the super high frequency band (SHE) extends between 3 GHz and 30 GHz, also known as centimeter wave). Although the disclosure here refers to mmWs, it should be understood that the disclosure also applies to mmW-based communication. In addition, while the disclosure here refers to mmW base stations, it should be understood that the disclosure
also applies[0062] to seasonsTo basein mmW next. build one network in useful communication on the spectrum of lenght in wave millimeter, a technique of beam forming can to be
used to compensate for lost track. Beam forming techniques concentrate the RE energy in a narrow direction to allow the RE beam to
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29/79 propagate more in that direction. Using the beam forming technique, non-linear RF vision (NLOS) communication in the millimeter wavelength spectrum may depend on the reflection and / or diffraction of the beams to reach the UE. If the direction becomes blocked, either due to movement of the UE or changes in the environment (eg obstacles, humidity, rain, etc.), the beam may not be able to reach the UE. Thus, in order to ensure that the UE has continuous and uninterrupted coverage, multiple beams can be available in as many different directions as possible. In one respect, the beam forming technique may require mmW base stations and UEs to transmit and receive in a direction that allows most of the RF energy to be collected.
[0063] The base station 402 may include hardware for performing analog and / or digital beam shaping. For example, base station 402 can transmit an SS block. The SS block can be used in connection with the beam forming. The SS block can include an SS block index or an SS block identifier. In one aspect, the systems and methods described herein can distinguish different beams according to the indices, for example, an SS blocking index. The indices can be provided in SS blocks according to the present disclosure. The SS block index can be decoded and used to determine the direction of the beam. If the base station 402 is equipped with analog beam transmission, at any time, the base station 402 can transmit or receive a signal in
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30/79 only one direction. If base station 402 is equipped with a digital beam conformation, base station 402 can simultaneously transmit multiple signals in multiple directions or can receive multiple signals simultaneously in multiple directions.
[0064] In addition, the UE 404, for example, may include hardware for performing analog and / or digital beam shaping. If the UE 404 is equipped with analog beam conformation, the UE 404 can transmit or receive a signal in one direction at any time. If the UE 404 is equipped with a digital beam conformation, the UE 404 can simultaneously transmit multiple signals in multiple directions or can simultaneously receive multiple signals in multiple directions.
[0065] In the mmW network, UEs can perform beam scans with mmW base stations within range. For example, base station 402 can transmit m-beams in a plurality of different spatial directions. The UE 404 can listen to / scan the beam transmissions from the base station 402 in different n spatial reception directions. When listening / scanning the beam transmissions, the UE 404 can listen / scan the beam scan transmission from the base station 402 m times in each of the n different spatial receiving directions (a total of m * n scans). In another aspect, in a beam scan, the UE 404 can transmit n beams in a plurality of different spatial directions. The base station 402 listens / scans the beam transmissions of the UE 404 in different m
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31/79 spatial reception directions. When listening / scanning the beam transmissions, the base station 402 can listen / scan the beam scan transmission of the UE 404 n times in each of the different spatial reception directions (a total of m * n scans).
[0066] Based on the beam scans performed, the UEs and / or mmW base stations can determine a channel quality associated with the beam scans performed. For example, UE 404 can determine the channel quality associated with the beam scans performed. Alternatively, base station 402 can determine the quality of the channel associated with the executed beam scans. If the UE 404 determines a channel quality associated with the executed beam scans, the UE 404 can send the channel quality information (also known as the beam scan result information) to the base station 402. The UE 404 can send the beam scan result information to base station 402. If base station 402 determines a channel quality associated with the performed beam scans, base station 402 can send the beam scan result information to the UE 404. In one aspect, channel quality can be affected by a variety of factors. Factors include the movement of the UE 404 along a route or due to rotation (for example, a user holding and / or rotating the UE 404), movement along a route behind obstacles and / or movement under environmental conditions (eg obstacles, rain, humidity). UE 404 and base station 402 can also
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32/79 exchange other information, for example, associated with beam conformations (for example, analog or digital beam conformation capabilities, type of beam conformation, timing information, configuration information, etc.).
[0067] Based on the information received, the base station 402 and / or the UE 404 can determine various configuration information, such as mmW network access configuration information, information to adjust the beam scan frequency, information about overlay coverage to provide for a transfer to another base station, such as an mmW base station.
[0068] In one aspect, a bundle of bundles can contain eight different bundles. For example, Figure 4A illustrates eight bundles 421, 422, 423, 424, 425, 426, 427, 428 for eight directions. In aspects, the base station 402 can be configured to form a beam for transmission of at least one of the beams 421, 422, 423, 424, 425, 426, 427, 428 towards the UE 404. In one aspect, the base station 402 it can scan / transmit directions using eight ports during a subframe (for example, synchronization subframe). In one aspect, the UE 404 can distinguish different beams according to the indices. The indices can be provided in SS blocks according to the present disclosure.
[0069] In one aspect, a base station can transmit a signal, such as a beam reference signal (BRS), in a plurality of directions, for example, during
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33/79 a synchronization subframe. In one aspect, this transmission can be cell specific. With reference to Figure 4B, base station 402 can transmit a first set of beams 421, 423, 425, 427 in four directions. For example, base station 402 can transmit a BRS in a synchronization subframe of each of the transmission beams 421, 423, 425, 427. For example, the synchronization subframe can be an SS. The SS can provide a block index. The block index can be used to determine a beam direction.
[0070] In one aspect, these bundles 421, 423,
425, 427 transmitted in the four directions can be odd indexed bundles 421, 423, 425, 427 for the four directions out of a possible eight for the bundle. For example, base station 402 may be able to transmit beams 421, 423, 425, 427 in directions adjacent to other beams 422, 424, 426, 428 that base station 402 is configured to transmit. In one aspect, this configuration in which the base station 402 transmits beams 421, 423, 425, 427 to the four
directions can be considered a set of bundle thick. [0071] 0 EU 404 can determine one respective beam index (at abbreviated times as
BI) corresponding to a respective beam. For example, the UE 404 can distinguish different beams according to indexes, for example, the beam index. The indices can be provided in SS blocks according to the present disclosure. In several respects, the
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34/79 beam can indicate at least one direction to communicate through a corresponding beam towards UE 404 (for example, a beam forming direction). For example, the beam index can be a logical beam index associated with an antenna port, OFDM symbol index, and / or BRS transmission period, which can be indicated by one or more bits (for example, 9 bits). For example, UE 404 can be configured to determine a beam index corresponding to a beam based on a time when a BRS is received, for example, a symbol or partition during which a BRS is received can indicate an index of beam corresponding to a beam.
[0072] In Figure 4C, UE 404 can determine or select a beam index (sometimes abbreviated as BI) that is stronger or preferable. The beam index can be used to distinguish different beams. The indices can be provided in SS blocks according to the present disclosure. In one example, UE 404 can determine a beam index from an SS block. The SS block can provide a beam index that can be used to determine a beam direction. In another example, UE 404 may determine that beam 425 carrying a BRS is stronger or preferable. The UE 404 can select a beam by measuring values for a received power or received quality associated with each of the first set of beams 421, 423, 425, 427. In one aspect, the received power can be termed as a received power of BRS (BRSRP).
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35/79 [0073] The UE 404 can compare the respective values with each other. The UE 404 can select a better beam. In one aspect, the best beam can be a beam that corresponds to the largest or largest value (for example, the best beam can be a beam with the highest BRSRP value). The selected beam can correspond to a beam index used to distinguish different beams, which can be a beam index with respect to base station 402. For example, UE 4 04 can determine that the BRSRP corresponding to the fifth beam 425 is the highest, and therefore the fifth beam 425 is the best beam, as determined by UE 404.
[0074] UE 404 may transmit a first indication 460 from the fifth beam 425 to base station 402. In one aspect, the first indication 460 may include a request to transmit a beam refinement reference signal (BRRS). BRRS can be specific to the EU. A person of ordinary skill would appreciate that BRRS can be termed by different terminology without departing from the present disclosure, such as a beam refinement signal, a beam tracking signal, or another term.
[0075] In one aspect, the base station 402 can trigger the transmission of the first indication 460. For example, the base station 402 can trigger the transmission of the first indication 460 by a DCI message.
[0076] Base station 402 may receive first indication 460. In one aspect, first indication 460 may include a beam adjustment request (BAR) (for example, a request for beam tracking, a request for a BRRS, an
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36/79 request to the base station to initiate transmission at an indicated beam index without any additional beam tracking, and the like). In one aspect, the first indication 460 can be indicated by a programming request. Based on the first indication 460, the base station 402 can determine the beam index corresponding to the fifth beam 425.
[0077]
In Figure 4D, base station 402 can transmit a second set of beams based on the first indication 460 (for example, based on a beam index indicated by the first indication 460). For example, UE 404 may indicate that a fifth beam 425 is the best beam and, in response, base station 402 may transmit a second set of beams 424, 425, 426 to UE 404 based on the indicated beam index. In one aspect, beams 424, 425, 426 transmitted based on the first indication 460 may be closer (for example, spatially and / or directionally) to the fifth beam 425 than the other beams 421, 423, 427 of the first set of bundles.
[0078]
In one aspect, the beams 424, 425, 426 transmitted based on the first indication 460 can be considered a thin beam assembly. In one aspect, the base station 402 can transmit a BRRS through each of the beams 424, 425, 426 of the thin beam assembly. In one aspect, the bundles 424, 425, 426 of the thin bundle may be adjacent. In one aspect, the BRRS transmission may comprise 1, 2, 5 or 10 OFDM symbols and may be associated with a BRRS resource allocation, BRRS process indication and / or a BRRS process configuration
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37/79 beam refinement.
[0079] Based on the transmission of BRRS through beams 424, 425, 426 of the thin beam assembly, UE 404 can transmit a second indication 465 to base station 402 to indicate a better beam. In one aspect, the second indication 465 can use two (2) bits to indicate the selected beam. For example, UE 404 can transmit the second indication 465 which indicates a beam index corresponding to the selected beam 425. In one aspect, the second indication 465 can report beam refinement information (BRI). In one aspect, the second indication 465 may include a resource index (for example, a BRRS-RI) and / or a reference power (RP) associated with the reception of the BRRS as measured by the UE 404 (for example, a BRRS -RP). The base station 402 can then communicate with the UE 404 via the selected beam 425. As described here, knowing a beam index from a synchronization procedure, for example, from the SS, can be useful for beam selection.
[0080] With reference to Figure 4E, base station 402 can transmit a BRS in a plurality of directions during a synchronization subframe. In one aspect, base station 402 may transmit the BRS continuously, for example, even after UE 404 has communicated the second indication 465. For example, base station 402 may have transmission beams 421, 423, 425, 427 that each one includes a BRS (for example, a thick beam set).
[0081] With reference to Figure 4F, the quality of a selected beam 425 may deteriorate so that
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38/79 the UE 404. For example, when the base station 402 and the UE 404 communicate through the selected beam 425, the selected beam 425 may become occluded or otherwise unsatisfactory that the base station 402 and the UE 404 may prefer communicate through another beam. Based on the BRS (for example, transmitted during a synchronization subframe), the UE 404 can determine a new beam 423 through which it communicates. For example, UE 404 may determine that the third beam 423 through which a BRS is communicated may be the best beam. The UE 404 can select a beam based on the measurement of values for a received power (for example, BRSRP) or received quality associated with each of the beam sets 421, 423, 425, 427, comparing the respective values with each other and selecting the beam that corresponds to the highest value. The selected beam may correspond to a beam index at base station 402. UE 404 may transmit a third indication 470 indicating this beam index to base station 402. In one aspect, third indication 470 may include a request to transmit a BRRS. BRRS can be specific to the UE. In one aspect, a BAR can be used to request base station 402 to transmit a BRRS. In one aspect, the third indication 470 can be triggered by base station 402, such as by a DCI message. Similar to the first indication 460, the third indication 470 can be included in an appointment request.
[0082] With respect to Figure 4G, base station 402 can receive third indication 470 from UE 404. Base station 402 can be configured to determine a
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39/79 beam index based on at least the third indication 470. Base station 402 and UE 404 can perform a beam refinement procedure, as illustrated in relation to Figure 4E (for example, to select a new beam through which communicates).
[0083] Figure 5 is a diagram illustrating an SS 500 burst set example. The SS 500 burst set example includes a number of SS bursts (B), where B is the total number of bursts . As shown in Figure 5, the SS 500 burst set includes the following, SSburstO 502, SSburstl 504 and SSburst (B1) 506. Each SS burst (SSburstO 502, SSburstl 504 and SSburst (Bl) 506) includes one series of SS blocks 508, 510, 512. For example, Figure 5 illustrates that SSburstO 502 includes a number, b, blocks of SS. An SS block contains synchronization and PBCH signals. SS b blocks are executed and can be numbered from 0 to (b _ss ^max-1 ) and include SSblockO 508, SSblockl 510 and SSblock (b _ss ^max-1 ) 512, for a given burst.
[0084] Each SS block 508, 510, 512 can include a plurality of synchronization signals that are multiplexed together. The plurality of synchronization signals can include one or more of a PSS, an SSS, a TSS or a PBCH. In one example, PSS can be used to signal the symbol time. The timing signaling of the symbol can be used to send timing information that can be used to synchronize a UE in a communications system. In one example, SSS can be used to signal a PCI and radio frame time. PCI can be used to identify stations
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40/79 base on a communication network. Frame timing is timing information that can be used to synchronize the communication system. In one example, SS can be used to signal SS block indexes. For example, SS can be constructed based on pseudo-noise (PN) sequences and cyclic shifts of pseudo-noise (PN) sequences can be used to signal SS blocking indices. In one example, the PBCH can be used to signal minimal system information to support an UE in initial access procedures.
[0085] In one aspect, the SS signal can carry index information for the SS block that refers to the bundles, for example, the bundle index or SS block repetition indexes within a bundle. SS blocks can be repeated within a beam to improve the link budget. In some respects, the SS can be used to provide the beam index and / or the SS block repeat index for a UE. SS decoding can provide the beam index and / or SS block repeat index to the UE. For example, a base station can transmit an SS. The SS can include a block index that can be used to determine the direction of the beam.
[0086] The SS 500 burst set example can include a plurality of SS 508, 510, 512 burst blocks that can form a sequence of SS 502, 504, 506. Each SS 508, 510, 512 block can being identified by an SS block index can be carried in one or more synchronization signals. In one aspect, one or more synchronization signals in the SS block
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41/79 may include a PBCH, PSS, SSS, TSS and / or other SS. Unlike the synchronization signals, they can transmit some or all of the SS block indices. In one aspect, an SS block index, for example partial, can be carried in a synchronization signal (for example, TSS or another SS) that can be multiplexed by frequency division with the other synchronization signals of the block of synchronization. SS. In one aspect, the synchronization signal that carries the SS block index, for example partial, can be multiplexed by frequency division with the SSS. In one aspect, the SS block can be a DM-RS for the PBCH.
[0087] Figure 6 is a diagram illustrating an example of frequency division multiplexing 600 of an SS with a PSS in an SS 610 block according to the systems and methods described here. The diagram, which illustrates an example of frequency division multiplexing 600, is a time / frequency diagram. The time / frequency diagram illustrates an example of positioning the PSS, the SSS, the SS (SSI, SS2), and the PBCH (two PBCHs) in time and frequency. PSS, SSS, SS (SSI, SS2), PSS, and PBCH (two PBCHs) can be transmitted as part of an SS 610 block.
[0088] In the example in Figure 6, the SS is multiplexed by frequency division with the PSS. In frequency division multiplexing, the available bandwidth for synchronization 607 in a communication medium can be divided into a series of non-overlapping frequency subbands 604. Each of the non-overlapping frequency subbands 604 can be used to carry a separate signal. In the example shown in Figure 6, SSI, SS2
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42/79 and PSS can each use one of the non-overlapping frequency subbands 604.
[0089] In one aspect, the SS can be multiplexed with another SS in the SS 610 block such as the PSS. The PSS and SSS can be mapped around the sync signal frequency. The SS can be divided into two SS, for example, SSI, SS2. Thus, the SS can be mapped into two neighboring sub-bands of the PSS, so that the bandwidth of the PSS and SS (SSI + SS2) is equal to the bandwidth of the SSS. The mapping of SS sequences can be defined in such a way that a UE 104 can identify a sequence and perform a search to arrive at an SS block index. The SS block index can be decoded and used to determine the direction of the beam.
[0090] PSS multiplexed by frequency division and SS can be multiplexed by time division with one or more of the SSS and PBCHs. In time division multiplexing, the time available for transmission can be divided up to a series of non-overlapping periods 606. In the illustrated example, in a first period 606, a first PBCH is transmitted using the available bandwidth for synchronization 602. In a second period 606, PSS and SS multiplexed by frequency division is transmitted using the non-overlapping frequency subbands 604. One non-overlapping frequency subband 604 can be used for each of the SS1, PSS and the SS2. In a third period 606, an SSS is transmitted using the available bandwidth for synchronization 602. In a fourth period 606, a second PBCH is transmitted using the available bandwidth for synchronization
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43/79
602. Such an FDM approach for locating the SS can reduce the number of time to test and thus facilitate the least complexity of PSS detection.
[0091] In the diagram, time can increase along the time axis in the direction of the arrow on the time axis. Therefore, the first PBCH can be transmitted, followed by PSS, SSI and SS2, at the same time, using frequency multiplexing. SSS can follow PSS, SS1 and SS2. The second PBCH can follow the SSS. However, the diagram illustrates just one example of a possible allocation of time / frequency resources for the frequency division multiplexing of the SS and PSS. Other sorts, in addition to the sort shown in the diagram, can also be used. In addition, in the diagram, the frequency can increase along the frequency axis in the direction of the arrow.
[0092] In one example, the SS sequence design can be built on the basis of PN sequences.
Examples in strings of PN include, but are not They are limited The strings M and Zadoff- -Chu. THE sequence M can be one length string maximum (MLS). 0MLS is a string type binary
pseudo-random, whose bits can be generated using maximum linear feedback displacement records. The Zadoff-Chu sequence is an example of a mathematical sequence of complex value.
[0093] In one example, SSI and SS2 can be cyclical shifts of base PN sequences. A cyclic shift is the operation of rearranging entries in a sequence. Thus, SSI and SS2 can be a rearranged (displaced) version of the PN sequences of
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44/79 base.
[0094] Furthermore, in one aspect, SS2 can be shuffled by the cyclical deviation of SS1. SS2 can be shuffled by the cyclic shift of SS1 to differentiate different SS rates from the same cell.
[0095] In another aspect, SSI and SS2 can be shuffled by PCI. Shuffling SSI and SS2 using PCI can allow you to differentiate the same SS index from different cells.
[0096] In another aspect, the SS lock index can be signaled by a combination of SSI and SS2 cyclical shifts.
[0097] In one aspect, a determination of a block index based on an identity / root of a PN sequence can be used in a communication system in connection with the PSS and the SSS. A device can recognize a sequence (or an offset to a sequence, or a combination of sequences) and map the recognized sequence identifier to an index value as part of a larger synchronization procedure that includes cell identification and beam information.
[0098] The example in Figure 6 may be less complex than the example in Figure 7 discussed below because the detection of PSS may use a lower sample rate which may lead to less chance of testing and less testing needs to be performed.
[0099] In one aspect, having both SSI and SS2 can provide a larger sequence space than a case with a long SS sequence. A sequence space can be a vector space of real or complex numbers.
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45/79 [0100] Figure 7 is a diagram that illustrates an example of time division multiplexing 700 from one SS with another SS in an SS block 710 according to the systems and methods described here. The diagram, which illustrates an example of time division multiplexing 700, is a time / frequency diagram. The time / frequency diagram illustrates an example of positioning the PSS, the SSS, the SS, and the two PBCHs in time and frequency. In addition, PSS, SSS, SS, and the two PBCHs can be transmitted as part of an SS 710 block.
[0101] In the example in Figure 7, the SS can be multiplexed in time with other SS in the SS 710 block, such as the PSS, SSS, SS and the two PBCHs. In time division multiplexing, the time available for transmission can be divided up to a series of non-overlapping periods 706, 708. In the example shown, in a first period 706, a first PBCH is transmitted using the available bandwidth for synchronization 702 In a second 708 period, the PSS is transmitted using the available bandwidth for synchronization 702. If the first time period 706 is a time period, t, the second period 708 can be a time period, t / 2. In a third period 708, the SS is transmitted using the available bandwidth for synchronization 702. In a fourth period 706, an SSS is transmitted using the available bandwidth for synchronization 702. In a fifth period 706, a second PBCH is transmitted. transmitted using the available bandwidth for synchronization 702. In the example in Figure 7, four OFDM (4T) symbols can be used.
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46 / Ί °>
[0102] In another example, five OFDM (5T) symbols can be used. For example, the first PBCH, SSS, SS, PSS and the second PBCH can all span a period, T. In other words, the SS and PSS can span the same period as PBCH and SSS.
[0103] In the diagram, time can increase along the time axis in the direction of the arrow on the time axis. Therefore, the first PBCH can be transmitted, followed by the PSS and then by the SS. The SSS can follow the SS. The second PBCH can follow the SSS. However, the diagram illustrates only one example of a possible allocation of time / frequency resources for time division multiplexing. Other sorts, in addition to the sort shown in the diagram, can also be used. In addition, in the diagram, the frequency can increase along the frequency axis in the direction of the arrow.
[0104] In one aspect, SS and PSS can be multiplexed by time division into a division symbol. The SS can be multiplexed with other SS in the SS 710 block. The SS and PSS can be multiplexed by time division so that the SS and PSS have the same numerology. In other words, the SS and PSS can have the same subcarrier spacing and cyclic prefix. SS and PSS can include a scaled numerology of other SS symbols (for example, SSS and PBCH) in the SS 710 block. For example, the subcarrier spacing and cyclic prefix can be scaled from other SS symbols . In one example, the SS and PSS subcarrier spacing can be 60 kHz, while the SSS and PBCH subcarrier spacing can be 30 kHz. despite
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47/79 increase the complexity of SS detection, the split symbol approach can support a better timing resolution than the FDM approach shown in Figure 6 due to the higher PSS bandwidth and higher sample rate.
[0105] In one aspect, the SS can be constructed based on cyclical deviations from PN sequences, for example, M sequence or Zadoff-Chu sequences. Therefore, the SS block index can be signaled by cyclical changes.
[0106] In one aspect, SS can be a frequency division multiplexed version of SSI and SS2. In frequency division multiplexing, the bandwidth available for synchronization 702 on a communication medium can be divided into a series of non-overlapping frequency subbands 704. Each of the non-overlapping frequency subbands 704 can be used to carry a separate signal. For example, in the example shown in Figure 7, SSI and SS2 can each use one of the non-overlapping frequency subbands 704. In one aspect, the SSI and SS2 design can be similar to the SSI and SS2 drawings described in relation to the Figure 7.
[0107] In one aspect, the SS can be shuffled by a PCI. The SS can be shuffled by the PCI to differentiate the same SS index from different cells.
[0108] In one aspect, the example can use an OFDM symbol for each of the PSS, the SSS, the SS and each of the two PBCHs that are multiplexed by time division. The spacing of the SS and PSS slide subcarrier
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48/79 can be double the sub carrier spacing of the SSS and PBCH. In another aspect, all of the PSS, the SSS, the SS and both PBCHs can have the same numerology and can use 5 OFDM symbols.
[0109] In one aspect, the cyclical offsets of the PN strings can be used to signal the SS blocking indices. For example, Figure 7 illustrates two short strings SSI and SS2. Assuming that SS1 is associated with a first base sequence of length N and SS2 is associated with a second base sequence of length N, theoretically there may be N * N combinations to be used to signal the SS blocking indexes.
[0110] The drawing in Figure 7 may have a greater complexity of detection of PSS. However, the drawing in Figure 7 can provide a better timing resolution over the drawing in Figure 6. Additionally, the drawing in Figure 7 can provide a better timing resolution due to a
higher sampling. 0 PSS used in the design of Figure 7 can have a width band more wide than the PSS used in the design 1 of Figure 6. For example, the PSS illustrated in Figure 6 can be 1/3 the width of the PSS illustrated in Figure 7 (assuming a case where each example uses the same total bandwidth).
[0111] Figure 8 is a diagram illustrating an example of 800 frequency division multiplexing from one SS with another SS in an SS 810 block according to the systems and methods described here. The diagram, which illustrates an example of multiplexing by
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49/79 frequency division 800, is a time / frequency diagram. The time / frequency diagram illustrates an example of positioning the PSS, the SSS, the SS, the PSS, and the PBCH (two PBCHs) in time and frequency. PSS, SSS, SS, PSS, and PBCH (two PBCHs) can be transmitted as part of an SS 810 block.
[0112] In the example in Figure 8, the SS is multiplexed by frequency division with both PBCHs, PSS and SSS. In frequency division multiplexing, the available bandwidth for synchronization signals on a communication medium 802 can be divided into a series of non-overlapping frequency subbands 804, 812. Each of the frequency subbands does not 804, 806 can be used to carry a separate signal. For example, in the example shown in Figure 8, the non-overlapping frequency subband 804 can be used to transmit PSS, SSS and both PBCHs. The sub-band of non-overlapping frequencies 804 can be used to transmit PSS, SSS and both PBCHs. The non-overlapping frequency subband 806 can be used to transmit the SS. The SS can be multiplexed by frequency with each of the other SS in an SS 810 block.
[0113] In the diagram, time can increase along the time axis in the direction of the arrow on the time axis. Therefore, the first PBCH can be transmitted, followed by the PSS, the SSS and the second PBCH. At the same time as each of the first PBCHs, the PSS, the SSS and the second PBCH, in the non-overlapping frequency subband 806, the SS can be transmitted. In other words, the SS can be transmitted on a frequency separate from the first PBCH, the
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PSS, SSS, and the second PBCH for a period of time that includes transmissions from the first PBCH, the PSS, the SSS, and the second PBCH. Therefore, the demodulation reference signal SS / PBCH (DMRS) can be the frequency division with the SSS and can cover the entire bandwidth of the SS block. The diagram illustrates just one example of a possible allocation of time / frequency resources for SS frequency division multiplexing and the other synchronization signals, however. Other sorts, in addition to the sort shown in the diagram, can also be used.
[0114] In one aspect, SS and other SS can be multiplexed by frequency division. For example, the SS can be multiplexed by frequency division with another SS in the SS block 810. The SS can be multiplexed by frequency division with one or all of a subset of the PSS, the SSS and both PBCH symbols within a SS block 810 For example, in one aspect, the SS can be multiplexed with the SSS, PSS or SSS and PSS. The SS can include one or more OFDM symbols.
[0115] In one aspect, the SS can be constructed based on cyclical deviations from PN sequences, for example, M sequence or Zadoff-Chu sequences, as discussed above. When the SS uses multiple OFDM symbols, the SS strings in different symbols can be identical or different. In one aspect, when the SS sequences are different in different symbols, the combination of cyclic deviations associated with the SS sequences can be used to signal the SS blocking index.
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51/79 [0116]
In appearance the SS can be shuffled by the PCI. The SS can be shuffled by the PCI to differentiate the same SS index from different cells.
[0117]
As discussed above, SS can be used to signal SS block indexes. Figure 9 is a diagram illustrating an example of frequency division multiplexing 900 of a signal comprising synchronization signal block (SS) index information with another SS in an SS 910 block according to the systems and methods described here. Figure 9 illustrates an example in which the signal comprising the SS block index information can be termed as an SS. The diagram in Figure 9 is generally similar to the diagram in Figure 8. Unlike the diagram in Figure 8, however, which illustrates the frequency division multiplexing of the signal comprising SS block index information with each of the first PBCHs, the PSS, SSS and the second PBCH, the diagram in Figure 9, illustrates that the signal comprising SS block index information can be frequency multiplexed with less than all other synchronization signals, for example, the PSS, the SSS, or both, the PSS and the SSS. Therefore, the SS / PBCH-DMRS can be the frequency division with the SSS and can cover less than the total bandwidth of the SS block. For example, the diagram in Figure 9 illustrates the frequency division multiplexing of the signal comprising SS block index information with the PSS and SSS (and not the PBCHs). In addition, unlike Figure 6, in the diagram in Figure 9, the bandwidth of the PSS and SSS multiplexed by division of
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52/79 frequency is equal to the bandwidth of PBCHs, which are not multiplexed by frequency division. The term SS is just one example of a signal that can comprise the SS block index information. In other examples, SS is not used to describe the block that contains the indexes of the SS block. For example, the term PBCH can be used to describe the block that contains the indexes of the SS block.
[0118]
Figure 10 is a diagram illustrating another example of frequency division multiplexing from one SS with another SS in an SS block according to the systems and methods described herein. As shown, SS1 and SS2 can be small PN sequences or parts of a larger PN sequence. The diagram, illustrating an example of 1000 frequency division multiplexing, is a time / frequency diagram. The time / frequency diagram illustrates an example placement of PSS, SSS, SS (SSI, SS2) and PBCH (two PBCHs) in time and frequency. PSS, SSS, SS and PBCH (two PBCHs) can be transmitted as part of an SS 1010 block. In an example of a short sequence design: SS1 and SS2 can be built from PN sequences of length 31 (for example, assuming the SS can occupy 62 REs).
[0119]
In the example in Figure 10, SSI and SS2 are multiplexed by frequency division with both PSS and SSS. In frequency division multiplexing, the available bandwidth for synchronization signals on a communication medium 1002 can be divided up to a series of non-overlapping frequency sub-bands 1004, 1012. Each of the sub-bands of
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53/79 non-overlapping frequencies 1004, 1012 can be used to carry a separate signal. For example, in the example shown in Figure 10, non-overlapping frequency sub-bands 1012 can be used to transmit the PSS, the SSS. The available bandwidth for synchronization 1002 can be used to transmit both PBCHs. The non-overlapping frequency subband 1004 can be used to transmit SSI and SS2. PBCH, PSS and SSS can be multiplexed over time in periods 1006, while SS1 and SS2 can span two periods 1006 over a total period 1008. Thus, in the example shown, PSS and SSS are multiplexed by time division with each other; PSS and SSS are multiplexed by frequency division with SS1 and SS2; and PBCH is multiplexed by time division with SS1 / SS2 / PSS / SSS.
[0120] In the diagram, time can increase along the time axis in the direction of the arrow on the time axis. Therefore, the first PBCH can be transmitted, followed by the PSS and then by the SSS, and then by the second PBCH (in the example shown). At the same time as the PSS and then the SSS, the non-overlapping frequency subband 1004 can be used to transmit SSI and SS2. In other words, SSI and SS2 can be transmitted on a frequency separate from the PSS and SSS in the same period of time. The diagram illustrates just one example of a possible allocation of time / frequency resources for SS frequency division multiplexing and the other synchronization signals, however. Other sorts, in addition to the sort shown in the diagram, can also be used.
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[0121] On a aspect, the PSS and the SSS may have The same width of band. The PRCH can have a width in wider band[0122]multiplexed by than PSS and SSS.In one respect, the SS frequency division with the Can bePSS and / or the
SSS. The SS can be multiplexed by frequency division with the PSS and / or the SSS such that the bandwidth of (SS + PSS) is equal to the bandwidth of PBCH.
[0123] In one respect, the bandwidth of (SS + SSS) is equal to the bandwidth of PBCH.
[0124] In one aspect, the SS can include two short PN sequences, SSI and SS2, or SS can be a long PN sequence (which can be an upper neighboring subband or a lower neighboring subband of the PSS and SSS).
[0125] In one aspect, a numerology of SS Can be identical to the numerology of PSS and / or the SSS. [0126] In one aspect, both the SS and the SSS can if r used as a DMRS for PBCH. [0127] In one aspect, the SS is multiplexed per division frequency with PSS and SSS in the same set
of OFDM symbols.
[0128] In one respect, the SS comprises a first SS and a according to SS. For example, the SS can be compound two short strings. In another aspect, the SS can be a single long streak. [0129] In one respect, the SS, the PSS, and the SSS
are multiplexed by time division with the PCSH.
[0130] Figure 11 is a diagram illustrating another example of division multiplexing.
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55/79 frequency of one SS with another SS in an SS block according to the systems and methods described here. As shown, the SS can be part of a longer PN sequence or it can be separated into short PN sequences. The diagram, which illustrates an example of frequency division multiplexing 1100, is a time / frequency diagram. The time / frequency diagram illustrates an example positioning of PSS, SSS, SS, PSS, and PBCH (two PBCHs) in time and frequency. The PSS, SSS, SS, and PBCH (two PBCHs) can be transmitted as part of an SS 1110 block. In an example of a long-sequence design, an SS can be built from the PN sequences of length 61 (for example, assuming the SS can occupy 62 REs, for example, with a zero tone of RE).
[0131] In the example in Figure 11, the SS is multiplexed by customer division with both PSS and SSS. In frequency division multiplexing, the available bandwidth for synchronization signals on a communication medium 1102 can be divided into a series of non-overlapping frequency sub-bands 1104, 1112. Each of the non-overlapping frequency sub-bands 1104, 1112 can be used to carry a separate signal. For example, in the example shown in Figure 11, the non-overlapping frequency sub-band 1104 can be used to transmit the SS. The non-overlapping frequency subband 1112 can be used to transmit both the PSS and the SSS. The available bandwidth for synchronization 1102 can be used to transmit data
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PBCHs (time division multiplexing). PBCHs can be multiplexed by time division with SS / PSS / SSS over time periods 1106. SS can use two time periods 1106 (one time 1108).
[0132] In the diagram, time can increase along the time axis in the direction of the arrow on the time axis. Therefore, the first PBCH can be transmitted, followed by the PSS and then by the SSS and the second PBCH. At the same time as the PSS and then the SSS, the non-overlapping frequency sub-band 1104 can be used to transmit SS through time periods used by PSS and SSS in the other frequency sub-band 1112. In other words, the SS can be transmitted on a separate frequency from PSS and SSS during the same two time periods (with PSS and SSS using each in time period 1106). The diagram illustrates just one example of a possible allocation of time / frequency resources for SS frequency division multiplexing and the other synchronization signals, however. Other sorts, in addition to the sort shown in the diagram, can also be used.
[0133] In one aspect, the SS is multiplexed by frequency division with the PSS and the SSS in the same set of OFDM symbols.
[0134] In one aspect, the SS comprises a first SS and a second SS. For example, the SS can be composed of two short strings. In another aspect, the SS can be a single long streak.
[0135] In one respect, the SS, the PSS, and the SSS
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57/79 are multiplexed by time division with the PCSH.
[0136] Figures 6-11 illustrate specific examples of multiplexing an SS with at least one of a PSS, an SSS, or a PBCH for transmission in an SS block. It will be understood, however, that other combinations of multiplexing an SS with at least one of a PSS, an SSS, or a PBCH for transmission in an SS block are also possible.
[0137]
Figure 12 is a flow chart 1200 of a wireless communication method according to the systems and methods described here. The method can be performed by an eNB / gNB (for example, eNB / gN13 102, 180, 310, 402, 1650, apparatus 1402, 1402 ') communicating with a UE (for example, UE 104, 350, 404, 1450, apparatus 1602, 1602 '). In block 1202, eNB / gNB determines an SS index for an SS block, the SS block comprising a plurality of multiplexed synchronization signals for transmission on predetermined resources. For example, eNB / gNB (102, 310, 402) determines an SS index for an SS block, the SS block comprising a plurality of multiplexed synchronization signals for transmission on predetermined resources (Figure 9). In determining an SS index for an SS block, the SS block comprising a plurality of multiplexed sync signals for transmission on predetermined resources may include one or more of determining a plurality of sync signals, multiplexed for transmission on predetermined resources.
[0138]
In block 1204, eNB / gNB generates
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58/79 first SS of the plurality of synchronization signals based at least in part on the SS index. For example, eNB / gNB (102, 310, 402) generates a first SS of the plurality of synchronization signals based at least in part on the SS index (Figure 9). Generating a first SS of the plurality of sync signals based at least in part on the SS index can include one or more of selecting an SS from a plurality of sync signals and applying the SS index to the SS.
[0139]
In block 1206, the eNB / gNB multiplexes by frequency division the first SS with at least one SSS of the SS block, wherein the SSS comprises a secondary synchronization signal that carries information about a cell identity group number. physical layer for the base station. For example, eNB / gNB (102, 310, 402) multiplexes by frequency division the first SS with at least one SSS of the SS block, where the SSS comprises a secondary synchronization signal that carries information about a number of physical layer cell identity group for the base station (Figure 9). Multiplexing by frequency division the SS with at least one SSS may include determining information about a physical layer cell identity group number, determining radio frame timing information for the base station, and multiplexing by frequency division o SS with at least one SSS. In one aspect, the SSS can also carry the radio frame timing information.
[0140]
In block 1208, eNB / gNB transmits the
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59/79 first SS block including the SS generated based at least in part on the frequency division of the SS block identifier multiplexed with the SSS in the predetermined resources. For example, eNB / gNB (102, 310, 402) transmits the first SS block including the SS generated based at least in part on the frequency division of the SS block identifier multiplexed with the SSS in the predetermined resources (910, Figure 9). Transmitting the SS block, the SS generated based at least in part on the frequency division of the SS block identifier multiplexed with the SSS in the predetermined resources may include one or more of determining the SS block identifier, determining the SSS, and provide the SS block to a transmitter.
[0141] In one aspect, the SS can include a first SS (SS1 Figure 6, Figure 10) and a second SS (SS2 Figure 6, Figure 10). In addition, the SS of Figure 7 can also be divided into multiple SS.
[0142] In one aspect, eNB / gNB can generate a first synchronization sequence for the first SS based on a first PN sequence. For example, eNB / gNB (102, 310, 402) generates a first synchronization sequence (for example, a series of bits) for the first SS (for example, SS1 Figure 6, Figure 10 and a first portion of SS ' Figure 7, Figure 11) based on a first PN sequence.
[0143] In one aspect, eNB / gNB can generate a second synchronization sequence for the second SS based on a second PN sequence. For example, eNB / gNB (102, 310, 402) generates a second synchronization sequence
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60/79 (for example, a series of bits) for the second SS (SS2 Figure 6, Figure 10 a second portion of SS Figure 7, Figure 11) based on a first PN sequence.
[0144] In one aspect, eNB / gNB can cyclic shift the first PN sequence based on a first cyclic shift to generate the first synchronization sequence. For example, the cyclic eNB / gNB (102, 310, 402) shifts the first PN sequence based on a first cyclic shift to generate the first synchronization sequence.
[0145] In one aspect, eNB / gNB can cyclically shift the second PN sequence based on a second cyclic shift to generate the second synchronization sequence. For example, the cyclic eNB / gNB (102, 310, 402) shifts the second PN sequence based on a second cyclic shift to generate the second synchronization sequence.
[0146] In one aspect, SS2 can be shuffled by the cyclical shift of SS1. Alternatively, in another aspect, the SS can be a single long string that can be cut into two parts for SSI and SS2.
[0147] Consequently, some examples may have a PN (long) sequence. Other examples can use two sequences of PN (short). For an example including a second PN sequence, the second PN sequence can be mixed separately by a cyclic shift of SS1 to improve orthogonality.
[0148] In one respect, eNB can shuffle the second synchronization sequence using the first bypass
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61/79 cyclic. For example, eNB / gNB (102, 310, 402) shuffles the second synchronization sequence using the first cyclic shift.
[0149] In one aspect, eNB / gNB can scramble the first sync sequence and the second sync sequence based on a base station PCI. For example, eNB / gNB (102, 310, 402) shuffles the first sync sequence and the second sync sequence based on the base station's PCI (eg, eNB / gNB).
[0150] In one aspect, eNB / gNB can determine a block index for the SS block. For example, eNB / gNB (102, 310, 402) determines a block index for the SS block (610, 710, 810, 910, 1010, 1110).
[0151] In one aspect, eNB / gNB can determine the first cyclic deviation and the second cyclic deviation based on the block index. For example, eNB / gNB (102, 310, 402) determines the first cyclic deviation and the second cyclic deviation based on the block index.
[0152] In one respect, O SS Can be multiplexed by frequency division in the same symbol OFDM with PSS • [0153] In one respect, the SS can include a
first SS and a second SS, and the first SS, the second SS, and the PSS are multiplexed by frequency division in the same OFDM symbol.
[0154] In one aspect, the PSS can be between the first SS and the second SS in frequency.
[0155] In one respect, the PSS, the first SS,
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62/79 and the second SS together can occupy the same number of RBs in the SS block as the SSS.
[0156] In one respect, the same number of RBs is x, the PSS occupies x / 2 RBs, the first SS occupies x / 4 RBs, and the second SS occupies x / 4 RBs.
[0157] In one aspect, the SS can be multiplexed by time division with the PSS, the SSS, and the PBCH in the same set of subcarriers.
[0158] In one aspect, the sub carrier spacing of SSS and PBCH is x kHz and the sub carrier spacing of SS and PSS is 2x kHz.
[0159] In one aspect, the SSS subcarrier spacing, PBCH, SS, and PSS can be the same.
[0160] In one aspect, the time length of the OFDM symbol for SS and PSS is each 1 / 2x ms, and the time length of the OFDM symbol for SSS and PBCH is each 1 / x ms.
[0161] In one aspect, the SS can include a first SS and a second SS, and the first SS and the second SS are multiplexed by frequency division in the same OFDM symbol.
[0162] In one aspect, the SS and PSS can be transmitted with a first cyclic prefix, and the SSS and PBCH are transmitted with a different second cyclic prefix from the first cyclic prefix.
[0163] In one aspect, the SS can to be multiplexed by division in often with fur one less of PSS, SSS, or the PBCH at the same set in symbols in
OFDM.
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63/79 [0164]
In one aspect, the SS is multiplexed by frequency division with the PSS, the SSS, and the PBCH in the same set of OFDM symbols.
[0165]
In one respect, the
SS can be multiplexed by frequency division with PSS and SSS in the same set of OFDM symbols.
[0166]
In one aspect, the SS is multiplexed by frequency division with the PSS and the SSS in the same set of OFDM symbols.
[0167]
In one aspect, SS multiplexed by frequency division with PSS and SSS includes a first SS and a second SS.
[0168] In one aspect, the SS, PSS, and SSS are multiplexed by time division with the PCSH.
[0169] Figure 13 is a 1300 flow chart of a wireless communication method according to the systems and methods described here. The method can be performed by a UE (for example, UE 104, 350, 404,
1450, apparatus 1602, 1602 ') as part of an initial acquisition procedure in which the UE performs cell identification, acquires frame timing, etc. In block 1302, the UE receives a synchronization signal block with a first SS comprising a first index for the frequency division of SS block multiplexed with a second synchronization signal (SSS) in predetermined resources, where the SSS cards information on a physical layer cell identity group number for a base station. For example, the UE (e.g., UE 104, 350, 404, 1450, apparatus 1602, 1602 ') receives a synchronization signal block with a first SS comprising a first
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64 / Ί °>
index for multiplexed SS block frequency division with an SSS on predetermined resources, where the SSS controls information about a group number of physical layer cell identities for a base station. Receiving a sync signal block can include one or more receive signals and extract the sync signal block.
[0170]
In block 1304, the UE demultiplexes the first SS and the SSS and obtains the SS index and information about the cell group identity number of the physical layer to the base station. For example, the UE (for example, the UE 104, 350, 404, 1450, the apparatus 1602, 1602 ') demultiplexes the first SS and the SSS and obtains the SS index and information about the identity group number of cells from the physical layer to the base station. Demultiplexing the SS and SSS to obtain information about a group number of physical layer cell identities and radio frame timing information for a base station can include processing SS and SSS and extracting information about a group number of physical layer cell identities and radio frame time information.
[0171]
In block 1306, the UE communicates with the base station based on information from the SS block. For example, the UE (e.g., UE 104, 350, 404, 1450, apparatus 1602, 1602 ') communicates with the base station based on information from the SS block. Communication with the information-based base station can include one or more signal generators to communicate with the base station and transmit the signals.
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[0172] In one aspect, the HUH 104, 350 ), 404 determines the first cyclic shift it's the second Detour cyclical and determines a block index of block of SS with
based on the first determined cyclical deviation and the second determined cyclical deviation.
[0173] In one respect, the SS can include one first SS corresponding to a first sequence in synchronization and a second SS corresponding to an
second synchronization sequence.
[0174] In one aspect, the first synchronization sequence can be based on a first PN sequence.
[0175] In one aspect, the second synchronization sequence can be based on a second PN sequence.
[0176] In one aspect, the first synchronization sequence can be a first cyclical deviation from the first PN sequence.
[0177] In one aspect, the second synchronization sequence can be a second cyclical deviation from the second PN sequence.
[0178] In one aspect, a UE can decode the second synchronization sequence based on the first cyclic offset.
[0179] In one aspect, a UE can decode the first synchronization sequence and the second synchronization sequence based on a physical cell identifier (PCI) received from a base station.
[0180] In one aspect, a UE can determine the first cyclical deviation and the second cyclical deviation.
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66/79 [0181] In one aspect, a UE can determine a block index of the SS block based on the first determined cyclic deviation and the second determined cyclic deviation.
[0182] In one aspect, the SS can be multiplexed by frequency division in the same OFDM symbol with the PSS.
[0183] In one aspect, the SS can include a first SS and a second SS, and the first SS, the second SS, and the PSS are multiplexed by frequency division in the same OFDM symbol.
[0184] In one aspect, the PSS can be between the first SS and the second SS in frequency.
[0185] In one aspect, the PSS, the first SS, and the second SS together can occupy the same number of resource blocks (RBs) in the SS block as the SSS.
[018 6] In one respect, the same number of RBs is χ, the PSS occupies x / 2 RBs, the first SS occupies x / 4 RBs, and the second SS occupies x / 4 RBs.
[0187] In one aspect, the SS can be multiplexed by time division with the PSS, the SSS, and the PBCH in the same set of subcarriers.
[0188] In one aspect, the sub carrier spacing of SSS and PBCH is x kHz and the sub carrier spacing of SS and PSS is 2x kHz.
[0189] In one aspect, the SSS subcarrier spacing, PBCH, SS, and PSS can be the same.
[0190] In one aspect, the time length of the OFDM symbol for SS and PSS is each 1 / 2x ms, and
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67/79 OFDM symbol time length for SSS and PBCH are each 1 / x ms.
[0191] In one aspect, the SS can include a first SS and a second SS, and the first SS and the second SS are multiplexed by frequency division in the same OFDM symbol.
[0192] In one aspect, SS and PSS have a first cyclic prefix, and SSS and PBCH have a different second cyclic prefix from the first cyclic prefix.
[0193] In one aspect, the SS can be multiplexed by frequency division with at least one of the PSS, the SSS, or the PBCH in the same set of OFDM symbols.
[0194] In one aspect, the SS can be multiplexed by frequency division with the PSS, the SSS, and the PBCH in the same set of OFDM symbols.
[0195] In one aspect, the SS can be multiplexed by frequency division with the PSS and the SSS in the same set of OFDM symbols.
[0196] In one aspect, cyclical deviations from PN sequences can be used to signal SS block indices. The example discussed in relation to Figure 6 can include two short sequences of SSI and SS2. Assuming that SS1 is associated with the base 1 sequence of length N and SS2 is associated with the base 2 sequence of length N, there may be N * N combinations that can be used to signal SS blocking indexes.
[0197] SS sequence mapping can be defined in a pattern such that a UE can identify the
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68/79 sequence and can perform a search to arrive at the SS blocking index, (for example, determining a range index value based on a sequence, offset, from the SS).
[0198] In one aspect, NI2 / 5G PSS / SSS can have the same functions as PSS / SSS LTE. A UE can first detect a PSS / SSS and then decode an SS to obtain an SS block index.
[0199] The example described in relation to Figure 7 may have a greater complexity of detection of PSS. However, the example described in relation to Figure 7 can provide a better timing resolution due to a higher sampling rate (the PSS has wider bandwidth than the PSS in the example described in relation to Figure 6)).
[0200] The example described in relation to Figure 6 may be less complex than the example described in relation to Figure 7 in detection of PSS due to the lower sampling rate, which may lead to a lower number of time to test .
[0201] Having SSI and SS2 can provide more sequence space (for example, N * N example above) than the case that has a long SS sequence.
[0202] The example discussed in relation to Figure 6 may be a more attractive option than the examples described in relation to Figures 7-9.
[0203] In one aspect, the SS is multiplexed by frequency division with the PSS and the SSS in the same set of OFDM symbols.
[0204] In one aspect, SS multiplexed by
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69/79 frequency division with PSS and SSS includes a first SS and a second SS.
[0205] In one aspect, the SS, PSS, and SSS are multiplexed by time division with the PCSH.
[0206] Figure 14 is a conceptual data flow diagram 1400 that illustrates the data flow between different media / components in an exemplary device 1402. The device can be a base station. The apparatus includes a component 1404 that receives signals (1452) from a UE 1450. The signals may include an SS block including a multiplexed SS with at least one from a PSS, an SSS, or a PBCH. The apparatus includes a component 1406 that determines an SS index for an SS block, the SS block comprising a plurality of multiplexed synchronization signals for transmission in predetermined resources from the signal (1454), a component 1408 that generates a first SS (1458) of the plurality of synchronization signals based at least in part on the SS index based on a signal (1456), and a component 1410 that frequency-multiplexes the first SS (1460) with at least one SSS of the SS block. The SSS comprises a secondary sync signal that carries information about a physical layer cell identity group number to the base station. The apparatus includes a component 1412 which transmits the first SS block including the generated SS (1462) based at least in part on the frequency division of the SS block identifier multiplexed with the SSS in the predetermined resources. For example, component 1412 can
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70/79 causing the transmission component 1414 to transmit signals (1468) including signals that include SS block including the SS generated based at least in part on the frequency division of the SS block identifier multiplexed with the SSS in the predetermined resources.
[0207] The apparatus may include additional components that execute each of the algorithm blocks in the aforementioned flowcharts of Figure 12. As such, each block in the aforementioned flowcharts of Figure 12 may be made by a component and the apparatus may include one or more of these components. The components can be one or more hardware components specifically configured to execute the declared processes / algorithm, implemented by a processor configured to execute the established processes / algorithm, stored in a computer-readable medium for implementation by a processor or some combination thereof .
[0208] Figure 15 is a diagram 1500 illustrating an example of a hardware implementation for a device 1402 'employing a 1514 processing system. The 1514 processing system can be implemented with a bus architecture, generally represented by the 1524 bus. The 1524 bus can include any number of bus and bridge interconnection, depending on the specific application of the 1514 processing system and the general design restrictions. The 1524 bus connects several circuits together, including one or more processors and / or hardware components, represented by processor 1504, components 1404, 1406, 1408,
Petition 870190078575, of 8/14/2019, p. 75/111
71/79
1410, 1412, 1414, and the computer / memory readable medium 1506. 1524 can also connect various other circuits, such as timing sources, peripherals, voltage regulators and power management circuits, which are well known in the art and, therefore, they will not be described later.
[0209] The processing system 1514 can be coupled to a transceiver 1510. Transceiver 1510 is coupled to one or more antennas 1520. Transceiver 1510 provides a means of communication with several other devices over a transmission medium. Transceiver 1510 receives a signal from one or more antennas 1520, extracts information from the received signal and provides the extracted information to processing system 1514, specifically receiving component 1404. In addition, transceiver 1510 receives information from processing system 1514 , specifically the transmission component 1418, and based on the information received, generates a signal to be applied to one or more antennas 1520. The processing system 1514 includes a processor 1504 coupled to a computer-readable medium / memory 1506. The processor 1504 is responsible for general processing, including running software stored on computer-readable media / memory 1506. The software, when run by processor 1504, causes processing system 1514 to perform the various functions described above for any particular device . Supportable computer support / memory 1506 can also be used to store data that is handled by processor 1504 when running the software. The system of
Petition 870190078575, of 8/14/2019, p. 76/111
72/79 processing 1514 further includes at least one of the components 1404, 1406, 1408, 1410, 1412, 1414. The components may be software components operating on processor 1504, resident / stored in the computer-readable medium / memory 1506, one or more hardware components attached to the 1504 processor, or
some combination of the same. 0 processing system 1514 may be a component base station 310 and can include the memory 376 and / or at least one TX processor 316, the processor RX 370, and the controller / processor 375.0210] In a configuration, the device 1402/1402 ' for communication wireless includes means for to determine a signal index synchronization (SS) for a block from SS, the block of SS comprising a
plurality of multiplexed synchronization signals for transmission in predetermined resources, means for generating a first SS of the plurality of synchronization signals based at least in part on the SS index, means for frequency division multiplexing the first SS with at least one second synchronization signal (SSS) of the SS block, wherein the SSS comprises a secondary synchronization signal that carries information about a physical layer cell identity group number to the base station, and means for transmitting the first block of SS including the SS generated based at least in part on the frequency division of the SS block identifier multiplexed with the SSS in the predetermined resources.
[0211] The aforementioned means can be one or more of the aforementioned components of apparatus 1402
Petition 870190078575, of 8/14/2019, p. 77/111
73/79 and / or processing system 1514 of apparatus 1402 'configured to perform the functions cited by the aforementioned means. As described above, processing system 1514 may include Processor TX 316, Processor RX 370 and controller / processor 375. As such, in one configuration, the aforementioned means may be Processor TX 316, Processor RX 370, and the controller / processor 375 configured to perform the functions cited by the aforementioned means.
[0212] Figure 16 is a conceptual data flow diagram 1600 that illustrates the data flow between different media / components in an exemplary apparatus 1602. The apparatus may be a UE. The apparatus includes a component 1604 that receives signals 1652 from a base station 1650. The signals may include an SS block including a multiplexed SS with at least one from a PSS, an SSS, or a PBCH. The apparatus includes a component 1606 that receives a synchronization block signal with a first SS comprising an SS index for the SS block frequency division multiplexed with an SSS into predetermined resources, where the SSS carries information about a number of physical layer cell identity group to a base station (1654) from the receiving component 1604. The apparatus includes a component 1608 that demultiplexes the SS and SSS (1656) and obtains the SS index and information about the physical layer cell identity group number for the base station (1658), a component 1610 that communicates with the base station based on information from the base station (1660) using
Petition 870190078575, of 8/14/2019, p. 78/111
Ί4 / Ί °>
transmission component 1612, which transmits signals (1662).
[0213] The apparatus may include additional components that execute each of the algorithm blocks in the aforementioned flowcharts of Figure 13. As such, each block in the aforementioned flowcharts of Figure 13 may be made by a component and the apparatus may include one or more of these components. The components can be one or more hardware components specifically configured to execute the declared processes / algorithm, implemented by a processor configured to execute the established processes / algorithm, stored in a computer-readable medium for implementation by a processor or some combination thereof .
[0214] Figure 17 is a diagram 1700 that illustrates an example of a hardware implementation for a 1602 'appliance employing a 1714 processing system. The 1714 processing system can be implemented with a bus architecture, generally represented by the 1724 bus. The 1724 bus can include any number of bus and bridge interconnection, depending on the specific application of the 1714 processing system and the general design restrictions. The 1724 bus joins several circuits, including one or more processors and / or hardware components, represented by the 1704 processor, the 1604, 1606, 1608, 1610, 1612 components and the 1706 computer-readable medium / memory. The 1724 bus can also connect several other circuits, such as timing sources, peripherals, voltage regulators and
Petition 870190078575, of 8/14/2019, p. 79/111
75/79 power management circuits, which are well known in the art and therefore will not be described further.
[0215] The 1714 processing system can be coupled to a 1710 transceiver. The 1710 transceiver is coupled to one or more 1720 antennas. The 1710 transceiver provides a means of communicating with several other devices via a transmission medium. The transceiver
1710 receives one signal one or more 1720 antennas, extracts information of signal Received, and provides the information extracted for O system in processing 1714,
specifically the receiving component 1604. In addition, the transceiver 1710 receives information from the processing system 1714, specifically the transmitting component 1614, and based on the information received, generates a signal to be applied to one or more antennas 1720. The system Processor 1714 includes a processor 1704 coupled to a computer-readable medium / memory 1706. The processor 1704 is responsible for general processing, including running software stored in the computer-readable medium / memory 1706. The software, when run by the processor 1704, causes the 1714 processing system to perform the various functions described above for any particular device. The 1706 computer / memory support can also be used to store data that is handled by the 1704 processor when running the software. The 1714 processing system also includes at least one of the components 1604, 1606,
1608, 1610, 1612. The components can be software components running on the 1704 processor,
Petition 870190078575, of 8/14/2019, p. 80/111
Ί6 / Ί °>
residents / stored in computer-readable medium / 1706 memory, one or more hardware components coupled to the 1704 processor, or some combination thereof. The processing system 1714 can be a component of the UE 350 and can include the 360 memory and / or at least one of the TX 368 processor, the RX 356 processor, and the 359 controller / processor.
[0216] In one configuration, apparatus 1602/1602 'for wireless communication includes means for receiving a synchronization block signal with a first SS comprising an SS index for multiplexed SS block frequency division with an SSS in predetermined resources, in which the SSS transports information about a physical layer cell identity group number to a base station, means for demplexing the first SS and SSS and obtaining the SS index and number information of physical layer cell identity group for the base station, and means for communicating with the base station based on information from the SS block.
[0217] The aforementioned means may be one or more of the aforementioned components of the apparatus 1602 and / or the processing system 1714 of the apparatus 1602 'configured to perform the functions cited by the means mentioned above. As described above, processing system 1714 may include Processor TX 368, Processor RX 356 and controller / processor 359. As such, in one configuration, the aforementioned means may be Processor TX 368, Processor RX 356, and the 369 controller / processor configured to perform the
Petition 870190078575, of 8/14/2019, p. 81/111
77/79 functions cited by the means mentioned above.
[0218] In one aspect, the synchronization signal comprises a demodulation reference signal for a synchronization block PBCH.
[0219] In one aspect, the SS block index information is carried using a deviation from a SS PN sequence.
[0220] In one aspect, the SS comprises a DMRS for a physical diffusion channel of PBCH.
[0221] In one aspect, the SS is multiplexed by frequency division with at least one of the PSS, the SSS, or the PBCH in the same set of OFDM symbols.
[0222] In one aspect, the SS is multiplexed by time division with the PSS, the SSS, and the PBCH in the same set of subcarriers.
[0223] In one aspect, the SS is multiplexed by frequency division with the SSS in the same set of OFDM symbols.
[0224] It is understood that the specific order or hierarchy of blocks in the disclosed processes / flowcharts is an illustration of exemplary approaches. Based on preferable designs, it is understood that the specific order or hierarchy of blocks in the processes / flowcharts can be rearranged. In addition, some blocks can be combined or omitted. The attached method claims elements present from the various blocks in a sample order, and is not intended to be limited to the specific order or hierarchy presented.
[0225] The preceding description is provided to allow anyone skilled in the art to practice
Petition 870190078575, of 8/14/2019, p. 82/111
78/79 the various aspects described here. Several changes to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other aspects. Thus, the claims are not intended to be limited to the aspects shown here, but must be in accordance with the full scope consistent with the claims of the language, where the reference to an element in the singular does not mean one and only one unless specifically so stated, but one or more. The word example is used here to mean serving as an example, instant or illustration. Any aspect described here as an example is not necessarily to be interpreted as preferred or advantageous over other aspects. Unless otherwise indicated, the term some refers to one or more. Combinations such as at least one from A, B or C, one or more from A, B or C, at least one from A, B and C, one or more from A, B and C, and A, B, C, or any combination thereof includes any combination of A, B and / or C, and may include multiples of A, multiples of B, or multiples of C. Specifically, combinations such as at least one of A, B or C, one or more of A, B or C, at least one of A, Be C, one or more of A, B, and C, and A, B, C, or any combination of these can be just A, B only, C only, A and B, A and C, B and C, or A and B and C, where any of these combinations can contain one or more members or members of A, B or C. All structural and functional components are equivalent to the elements of the various aspects described throughout this description that are known or that later become
Petition 870190078575, of 8/14/2019, p. 83/111 known to persons skilled in the art are hereby expressly incorporated by reference and are intended to be covered by the claims. In addition, nothing disclosed here is intended to be dedicated to the public, regardless of whether such disclosure is explicitly recited in the claims. The words module, mechanism, element, device and the like may not be a substitute for the word medium. As such, no declaration element should be interpreted as a more functional means unless the element is expressly recited using the expression means for.

权利要求:
Claims (5)
[1]
1. A method of wireless communication by a base station, comprising:
determining a sync signal index (SS) for an SS block, the SS block comprising a plurality of multiplexed sync signals for transmission on predetermined resources;
generating a first SS of the plurality of synchronization signals based at least in part on the SS index;
frequency division multiplexing the first SS with at least a second synchronization signal (SSS) from the SS block, wherein the SSS comprises a secondary synchronization signal that carries information about a physical layer cell identity group number to the base station; and transmitting the SS block including the first SS generated based at least in part on the frequency division of the SS block identifier multiplexed with the SSS in the predetermined resources.
2. Method according to claim 1, in what the first SS comprises a reference signal in demodulation for a physical broadcast channel (PBCH) SS block. of 3. Method according to claim 1, in that the SS index is carried using a PN sequence offset from the first SS. an 4. Method according to claim 1, in
that the first SS is multiplexed by frequency division with at least one of the PSS, the SSS, or a broadcast channel
Petition 870190078575, of 8/14/2019, p. 85/111
[2]
2/5 physical (PBCH) in the same set of Symbols Multiplexed by Orthogonal Frequency Division (OFDM).
5. Method according to claim 1, in which the first SS is multiplexed by time division with the PSS, the SSS, and a physical broadcast channel (PBCH) in the same set of subcarriers.
6. Method according to claim 1, wherein the first SS is multiplexed by frequency division with the SSS in the same set of OFDM symbols.
7. Method of wireless communication by a user equipment (UE), comprising:
receiving a sync signal block (SS) with a first sync signal comprising an SS index for multiplexed SS block frequency division with a second sync signal (SSS) in predetermined resources, where the SSS carries information about a physical layer cell identity group number for a base station;
demultiplex the first SS and the SSS and obtain the SS index and information about the physical layer cell identity group number for the base station; and
to communicate with the base station based in information from8. Method, of the SS block.according to claim 7, in that the first SS comprises a reference signal in demodulation for a physical diffusion channel (PBCH) of SS block.9. Method, according to claim 7, in
Petition 870190078575, of 8/14/2019, p. 86/111
[3]
3/5 that the first SS is multiplexed by frequency division with the SSS in the same set of OFDM symbols.
10. The method of claim 7, wherein the SS index is carried using a shift of a PN sequence from the first SS.
A method according to claim 10, wherein the first SS is multiplexed by time division with the PSS, the SSS, and a physical broadcast channel (PBCH) in the same set of subcarriers.
12. Method according to claim 7, wherein the first SS is multiplexed by frequency division with at least one of the PSS, the SSS, or a physical broadcast channel (PBCH) in the same set of Division Multiplexed Symbols Orthogonal Frequency (OFDM).
13. Apparatus for wireless communication, comprising:
means for determining a sync signal index (SS) for an SS block, the SS block comprising a plurality of multiplexed sync signals for transmission on predetermined resources;
means for generating a first SS of the plurality of synchronization signals based at least in part on the SS index;
means for frequency division multiplexing the first SS with at least a second synchronization signal (SSS) of the SS block, wherein the SSS comprises a secondary synchronization signal which carries information about a layer cell identity group number physics for the device; and means for transmitting the SS block including the
Petition 870190078575, of 8/14/2019, p. 87/111
[4]
4/5 first SS generated based at least in part on the frequency division of the SS block identifier multiplexed with the SSS in the predetermined resources.
Apparatus according to claim 13, wherein the first SS comprises a demodulation reference signal for a physical broadcast channel (PBCH) of the synchronization block.
Apparatus according to claim 13, wherein the SS index is carried using a deviation from a PN sequence of the first SS.
16. Apparatus according to claim 13, wherein the first SS is multiplexed by frequency division with at least one of the PSS, the SSS, or a physical broadcast channel (PBCH) in the same set of Division Multiplexed Symbols Orthogonal Frequency (OFDM).
17. Apparatus according to claim 13, in which the first SS is multiplexed by time division with the PSS, the SSS, and a physical broadcast channel (PBCH) in the same set of subcarriers.
18. Apparatus according to claim 13,
where the first SS is multiplexed by division in often withOFDM. the SSS in one same set of symbols in 19.comprising: Device for Communication wireless, means to receive a block of signal in synchronization (SS) common first signal in synchronization comprising a index of SS for The
multiplexed SS block frequency division with a second sync signal (SSS) on resources
Petition 870190078575, of 8/14/2019, p. 88/111
[5]
5/5 predetermined, where the SSS carries information about a physical layer cell identity group number to a base station;
means for demultiplexing the first SS and the SSS and obtaining the SS index and information about the physical layer cell identity group number for the base station; and means for communicating with the base station based on information for the SS block.
An apparatus according to claim 19, wherein the first SS comprises a demodulation reference signal for a physical broadcast channel (PBCH) of the synchronization block.
21. Apparatus according to claim 19, wherein the first SS is multiplexed by frequency division with the SSS in the same set of OFDM symbols.
22. Apparatus according to claim 19, wherein the SS index is carried using a deviation from a PN sequence of the first SS.
23. Apparatus according to claim 22, wherein the first SS is multiplexed by time division with the PSS, the SSS, and a physical broadcast channel (PBCH) in the same set of subcarriers.
24. Apparatus according to claim 19, wherein the first SS is multiplexed by frequency division with at least one of the PSS, the SSS, or a physical broadcast channel (PBCH) in the same set of Division Multiplexed Symbols Orthogonal Frequency (OFDM).

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公开号 | 公开日

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TW201836409A|2018-10-01|

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JP2020511817A|2020-04-16|

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KR20190117527A|2019-10-16|

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