low to peak energy ratio demodulation reference signal and granularity allocation information

专利摘要:
a first apparatus may determine a demodulation reference signal (dmrs) sequence based on a parent sequence, map the dmrs sequence to at least one first symbol of a resource block set (rbs) in a transmission, and send a dmrs including the dmrs sequence maps to at least one rbs set symbol. A second handset may receive information associated with resource allocation, determine a granularity based on information associated with resource allocation, determine resource allocation based at least in part on granularity, and receive a resource-loaded signal corresponding to resource allocation.
公开号:BR112019008891A2
申请号:R112019008891
申请日:2017-09-11
公开日:2019-08-13
发明作者:Xu Hao；Gaal Peter；Wang Renqiu；Park Seyong；Ji Tingfang；Chen Wanshi；Zeng Wei
申请人:Qualcomm Inc；
IPC主号:

专利说明:

DEMODULATION REFERENCE SIGN WITH LOW PEAK ENERGY RATIO TO AVERAGE AND GRANULARITY ALLOCATION INFORMATION
REFERENCE TO RELATED ORDER (S) [001] This order claims the benefit of provisional order US serial number 62 / 418,079, entitled DEMODULATION REFERENCE SIGNAL WITH LOW PEAK-TO-AVERAGE POWER RATIO and filed on November 4 2016 and US patent application number 15 / 699,687, entitled DEMODULATION REFRENCE SIGNAL WITH LOW PEAK-TOAVERAGE POWER RATIO AND ALLOCATION INFORMATION WITH GRANULARITY and filed on September 8, 2017, which are expressly incorporated by reference here in full.
BACKGROUND
Technical field [002] The present disclosure relates in general to communication systems and more particularly to a system having a demodulation reference signal with a low peak to medium energy ratio.
Introduction [003] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging and broadcasts. Typical wireless communication systems can employ multiple access technologies capable of supporting communications with multiple users by sharing available system resources. Examples of such multiple access technologies include code division multiple access systems (CDMA), time division multiple access systems (TDMA),
Petition 870190041027, of 5/2/2019, p. 8/94
2/59 Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA) Systems, Single Carrier Frequency Division Multiple Access Systems (SC-FDMA) and Division Access Multiple Access Systems synchronous time division code (TD-SCDMA).
[004] These multiple access technologies have been adapted into various telecommunication standards to provide a common protocol that allows different wireless devices to communicate at a municipal, national, regional and even global level. An example telecommunication standard is the new Radio 5G (NR). 5G NR is part of an evolution of mobile broadband that is still promulgated by a third generation Society 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 5G NR may be based on the 4G Long Term Evolution (LTE) standard. There is a need for further improvements in NR 5G technology. These improvements can also be applicable to other multiple access technologies and to the telecommunication standards that employ these technologies.
SUMMARY [005] The following provides a simplified summary of one or more aspects to provide a basic understanding of such aspects. This summary is not an extensive overview of all aspects considered, and is not intended to identify key or critical elements of all aspects or to outline the scope of all or
Petition 870190041027, of 5/2/2019, p. 9/94
3/59 any aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.
[006] In one aspect of the disclosure, a first method, a computer-readable medium, and a first device are provided. The first apparatus can determine a demodulation reference signal sequence (DMRS) based on a parent sequence. The first device can map the DMRS sequence to at least one symbol from a set of resource blocks (RBs) in a transmission. The first device can send a DMRS including the DMRS sequence mapped to at least one symbol in the set of RBs.
[007] In one aspect of the disclosure, a second method, a second computer-readable medium and a second device are provided. The second device can receive information associated with resource allocation, determine granularity based on information associated with resource allocation, determine resource allocation based at least in part on granularity and receive a signal loaded in resources corresponding to resource allocation.
[008] For the accomplishment of the above and related purposes, one or more aspects comprise the following characteristics fully described and particularly indicated in the claims. The following description and the attached drawings set out in detail certain illustrative features of one or more aspects. These characteristics are indicative, however, of only
Petition 870190041027, of 5/2/2019, p. 10/94
4/59 some 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 [009] Figure 1 is a diagram illustrating an example of a wireless communication system and an access network.
[0010] Figures 2A, 2B, 2C and 2D are diagrams illustrating examples of a DL frame structure, DL channels in the DL frame structure, a UL frame structure and UL channels in the UL frame structure, respectively.
[0011] Figure 3 is a diagram illustrating an example of a base station and user equipment (UE) in an access network.
[0012] Figure 4 is a call flow diagram for a wireless communication method.
[0013] The figure 5 is one diagram in ; a DMRS loaded front uplink-centric.[0014] The figure 6 is one diagram in ; a DMRS loaded front downlink-centric. [0015] The figure 7 is one diagram in a design DMRS sequence based on an mother string. [0016] The figure 8 is one diagram in cut and filtration to reduce PAPR. [0017] The figure 9 is one diagram in cut and filtration with one mother string •[0018] The figure 10 is one diagram in cut and filtration iterative with a string mother. [0019] The figure 11 is one diagram in flow of
Petition 870190041027, of 5/2/2019, p. 11/94
5/59 calling a wireless communication method.
[0020] THE figure 12 it's a diagram in granularity based in allocation. [0021] THE figure 13 is a flow chart of one method of communication wireless. [0022] THE figure 14 is a flow chart of one method of communication wireless. [0023] THE figure 1 5 is a flow diagram in
conceptual data illustrating the data flow between different components / media in an example device.
[0024] Figure 16 is a diagram illustrating an example of a hardware implementation for a device employing a processing system.
[0025] Figure 17 is a conceptual data flow diagram illustrating the data flow between different components / media in an example device.
[0026] Figure 18 is a diagram illustrating an example of a hardware implementation for an appliance employing a processing system.
DETAILED DESCRIPTION [0027] The detailed description set out below with respect to the attached 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 put into practice. The detailed description includes specific details for the purpose of providing a complete understanding of various concepts. However, as will be evident to those skilled in the art, such concepts can be put into practice without specific details. In some instances, structures and
Petition 870190041027, of 5/2/2019, p. 12/94
6/59 well-known components are shown in the form of a block diagram to avoid obscuring such concepts.
[0028] Various aspects of telecommunication 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 attached drawings by various blocks, components, circuits, processes, algorithms, etc. (collectively referred to as 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 limitations imposed on the general system.
[0029] As an example, an element, or any portion 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 on a chip (SoC), baseband processors, field programmable port arrangements (FPGAs), programmable logic devices (PLDs), state machines, gated logic, discrete hardware circuits and other suitable hardware configured to perform functionality described from the beginning to the end of this revelation. One or more processors
Petition 870190041027, of 5/2/2019, p. 13/94
7/59 in the processing system can run software. Software will be widely interpreted as meaning instructions, instruction sets, code, code segments, program code, programs, subprograms, software components, applications, software applications, software packages, routines, subroutines, objects, executables, execution threads, procedures,
functions, etc. • r want mentioned as software, firmware, middleware, mi crocode, language in description in hardware, or in another way. [0030] Therefore, in an or more modalities in example, the functions described can to be
implemented in hardware, software, or any combination thereof. If implemented in software, the functions can be stored in or coded as one or more instructions or code in a computer-readable medium. Computer readable media includes computer storage media. Storage media can be any available media that can be accessed by a computer. As an example, and not a limitation, such computer-readable media may comprise a random access memory (RAM), a read-only memory (ROM), an electrically erasable programmable ROM (EEPROM), optical disk storage, magnetic disk storage , other magnetic storage devices, combinations of the aforementioned types of computer-readable media, or any other media that can be used to store computer-executable code in the form of instructions or data structures that can be accessed by a computer.
Petition 870190041027, of 5/2/2019, p. 14/94
8/59 [0031] Figure 1 is a diagram illustrating an example of a wireless communication system and an access network 100. The wireless communication system (also referred to as a wireless remote area network (WWAN)) includes base stations 102, UEs 104 and a developed packet core (EPC) 160. Base stations 102 can include macro cells (high power cell base station) and / or small cells (low power cell base station). Macro cells include base stations. Small cells include femtocells, picocells and microcells.
[0032] Base stations 102 (collectively referred to as the developed Universal Mobile Telecommunication System (UMTS) interface Terrestrial radio access network (E-UTRAN) with EPC 160 through backhaul links 132 (for example, Sl interface) In addition to other functions, base stations 102 can perform one or more of the following functions: user data transfer, radio channel encryption and decryption, integrity protection, header compression, mobility control functions (for example, handover, dual connectivity), intercellular interference coordination, connection establishment and release, load balancing, distribution to non-access layer (NAS) messages, NAS node selection, synchronization, radio access network (RAN) sharing , multimedia broadcast multicast service (MBMS), equipment and subscriber trace, RAN information management (RIM), paging, positioning and supply alert messages.The base stations 102 can communicate directly or indirectly (for example, via EPC 160) with each other via backhaul links
Petition 870190041027, of 5/2/2019, p. 15/94
9/59
134 (for example, interface X2). Backhaul 134 links can be wired or wireless.
[0033] Base stations 102 can communicate wirelessly with UEs 104. Each of base stations 102 can provide communication coverage for a respective geographical coverage area 110. There may be overlapping geographical coverage areas 110. For example, the cell small 102 'can have a coverage area 110' that overlaps coverage area 110 of one or more macro base stations 102. A network that includes both small cell and macro cells can be known as a heterogeneous network. A heterogeneous network can also include native developed Node Bs (eNBs) (HeNBs), which can provide service to a restricted group known as a closed subscriber group (CSG). Communication links 120 between base stations 102 and UEs 104 can include uplink (UL) transmissions (also referred to as reverse link) from UE 104 to base station 102 and / or downlink (DL) transmissions (also mentioned) 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 formation and / or transmission diversity. Communication links can be through one or more carriers. Base stations 102 / UEs 104 can use spectrum up to Y MHz (for example, 5, 10, 15, 20, 100 MHz) of bandwidth per carrier allocated in a carrier aggregation of up to a total of Yx MHZ (x carriers component) used for transmission in each direction. The carriers may or may not be adjacent between
Petition 870190041027, of 5/2/2019, p. 16/94
10/59 si. The allocation of carriers can be asymmetric with respect 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 secondary component carriers. A primary component carrier can be mentioned as a primary cell (PCell) and a secondary component carrier can be mentioned 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 WWAN DL / UL 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 shared physical side link channel (PSSCH) ), and a physical side link control channel (PSCCH). D2D communication can be through a variety of wireless D2D communication systems, such as FlashLinQ, WiMedia, Bluetooth, ZigBee, Wi-Fi based on the IEEE 802.11 standard, LIE, 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 on an unlicensed frequency spectrum of 5 GHz. When communicating over an unlicensed frequency spectrum, STAs 152 / AP 150 can perform a free channel assessment (CCA) before communicating to determine if the channel is available.
Petition 870190041027, of 5/2/2019, p. 17/94
11/59 [0036] Small cell 102 'can operate on a licensed and / or unlicensed frequency spectrum. When operating on an unlicensed frequency spectrum, the small cell 102 'can employ NR and use the same 5 GHz unlicensed frequency spectrum as used by the Wi-Fi AP 150. The small cell 102', employing NR on a unlicensed frequency spectrum, can boost coverage to and / or increase the capacity of the access network.
[0037] nNodeB (gNB) 180 can operate on millimeter wave (mmW) 180 can operate on mmW frequencies and / or frequencies close to mmW in communication with UE 104. When gNB 180 operates on mmW frequencies or close to mmW , the gNB 180 can be referred to as an mmW base station. Extremely high frequency (EHF) is part of RF in the electromagnetic spectrum. EHF has a range of 30 GHz to 300 GHz and a wavelength between 1 mm and 10 mm. Radio waves in the band can be referred to as a millimeter wave. Close to mmW it can extend down to a frequency of 3 GHz with a wavelength of 100 mm. The super high frequency band (SHF) extends between 3 GHz and 30 GHz, also referred to as a centimeter wave. Communications using the radio frequency band mmW / close to mmW have extremely high loss of travel and a short range. The mmW 180 base station can use beamform 184 with the UE 104 to compensate for the extremely high loss of travel and short range.
[0038] EPC 160 may include a Mobility Management Entity (MME) 162, other MMEs 164, a
Petition 870190041027, of 5/2/2019, p. 18/94
12/59
In-Service Gateway 166, a Multimedia Multicast Broadcast Service Gateway (MBMS) 168, a Multicast Broadcast Service Center (BM-SC) 170, and a Packet Data Network Gateway (PDN) 172. The MME 162 may be in communication with a Home Subscriber Server (HSS) 174. MME 162 is the control node that processes signaling between UEs 104 and EPC 160. In general, MME 162 provides connection and carrier management. All user Internet Protocol (IP) packets are transferred through the in-service Gateway 166, which itself is connected to PDN Gateway 172. PDN Gateway 172 provides the UE with IP address allocation as well as other functions. PDN Gateway 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 streaming service, and / o other IP services. The BM-SC 170 can provide functions for provisioning and distributing MBMS user service. The BM-SC 17 0 can serve as an entry point for transmitting MBMS from content provider can be used to authorize and start MBMS bearer services on a public land mobile network (PLMN) and can be used to distribute traffic of MBMS for base stations 102 that belong to a single frequency multicast Broadcast Network (MBSFN) area that broadcasts a specific service, and may be responsible for session management (start / stop) and for collecting billing information related to eMBMS.
[0039] The base station can also be mentioned as a gNB, Node B, developed Node B (eNB), a
Petition 870190041027, of 5/2/2019, p. 19/94
13/59 access point, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a set of basic services (BSS), a set of extended services (ESS), or some other suitable terminology. Base station 102 provides an access point to EPC 160 for a UE 104. Examples of UEs 104 include a cell phone, a smart phone, a session initiation protocol (SIP) phone, a laptop, 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, an intelligent device, a wearable device, a vehicle, an electric meter, a gas pump, a toaster, or any other device of similar operation. Some of the UEs 104 can be mentioned as loT devices (for example, parking meter, gas pump, toaster, vehicles, etc.). UE 104 can also be referred to as a station, a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless device wireless communication, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a telephone device, a user agent, a mobile client, a customer, or any other other suitable terminology.
[0040] With reference again to figure 1, in certain aspects, the UE 104 can send a map signal
Petition 870190041027, of 5/2/2019, p. 20/94
14/59 demodulation reference (DMRS) for at least one symbol, for example, a first symbol, of a set of resource blocks (RBs) in a transmission and the first symbol can occur at the beginning of the transmission. The UE 104 can then send a DMRS 198 that includes the DMRS sequence mapped to at least one symbol, for example, the first symbol in the set of RBs. In one respect at least in one symbol, for example, the first symbol in the set of RBs. In one aspect, UE 104 can determine the DMRS sequence based on a parent sequence.
[0041] In another aspect, base station 102 can determine allocation information associated with UE 104. Base station 102 can determine a starting RB (for example, a RB index), a number of RBs (for example, a allocation size) and information associated with a granularity. The granularity can include a number of RBs. Base station 102 can send UE 104 information indicating allocation information. Information indicating allocation information may include information indicating a granularity 199. In one aspect, information indicating granularity 199 may include a granularity index. In one aspect, the DMRS sequence can be a segment of a parent sequence determined by the RB allocations.
[0042] Figure 2A is a diagram 200 illustrating an example of a DL frame structure. 2B is a diagram 230 illustrating an example of channels in the DL frame structure. Figure 2C is a diagram 250 illustrating an example of a UL frame structure. Figure 2D is a diagram 280 illustrating an example of channels
Petition 870190041027, of 5/2/2019, p. 21/94
15/59 on the UL frame structure. Other wireless communication technologies may have a different frame structure and / or different channels. One frame (10 ms) can be divided into 10 equally sized subframes. Each subframe can include two consecutive time partitions. A resource grid can be used to represent the two time partitions, each time partition including one or more blocks of simultaneous time resources (RBs) (also referred to as physical RBs (PRBs)). The resource grid is divided into multiple resource elements (REs). For a normal cyclical prefix, an RB can contain 12 consecutive subcarriers in the frequency domain and 7 consecutive symbols (for DL, OFDM symbols, for UL, SC-FDMA symbols) in the time domain, for a total of 84 REs. For an extended cycle prefix, an RB contains 12 consecutive subcarriers in the frequency domain and 6 consecutive symbols in the time domain, for a total of 72 REs. The number of bits carried for each RE depends on the modulation scheme.
[0043] As illustrated in figure 2A, some of the REs carry DL (pilot) reference signals (DL-RS) for channel estimation in the UE. DL-RS can include cell-specific reference signals (CRS) (also sometimes called common RS), UE-specific reference signals (UE-RS), and channel status information reference signals (CSI-RS ). Figure 2A illustrates CRS for antenna ports 0, 1, 2 and 3 (indicated as Rq, Ri, R ₂ θ R ₃ , respectively), UE-RS for antenna port 5 (indicated as Rs) and CSI-RS for antenna port 15 (indicated as R).
Petition 870190041027, of 5/2/2019, p. 22/94
16/59 [0044] Figure 2B illustrates an example of several channels in a DL subframe of a frame. The physical control format indicator channel (PCFICH) is comprised in the 0 symbol of partition 0, and carries a control format indicator (CFI) indicating whether the physical downlink control channel (PDCCH) occupies 1, 2 or 3 symbols (Figure 2B shows a PDCCH that occupies 3 symbols). The PDCCH carries downlink control information (DCI) in 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 RB pairs (figure 2B shows two RB pairs, each subset including an RB pair). The physical hybrid automatic (ARQ) (HARQ) (PHICH) auto repeat request indicator channel is also comprised in the 0 symbol of partition 0 and carries the HARQ (HI) indicator that indicates negative HARQ (ACK) / ACK confirmation feedback ( NACK) based on the shared physical uplink channel (PUSCH). The primary synchronization channel (PSCH) can be comprised in the symbol 6 of partition 0 in subframes 0 and 5 of a frame. The PSCH carries a primary synchronization signal (PSS) that is used by a UE 104 to determine symbol / subframe timing and a physical layer identity. The secondary synchronization channel (SSCH) can be comprised in the symbol 5 of partition 0 in subframes 0 and 5 of a frame. SSCH carries a secondary sync signal (SSS) that is used by a UE to determine a cell identity group number
Petition 870190041027, of 5/2/2019, p. 23/94
17/59 physical layer and radio frame timing. Based on the physical layer identity and the group number of the physical layer cell identity, the UE can determine a physical cell identifier (PCI). Based on the PCI, the UE can determine the locations of the aforementioned DL-RS. The physical broadcast channel (PBCH) carrying a master information block (MIB) can be logically grouped with the PSCH and SSCH to form a synchronization signal block (SS). The MIB provides a number of RBs in the DL system 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 as system information blocks (SIBs) and paging messages.
[0045] As illustrated in figure 2C, some of the REs carry demodulation reference signals (DM-RS) for channel estimation at the base station. The UE can additionally transmit sound reference signals (SRS) at the last symbol of a subframe. The SRS can have a comb structure, 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 at UL.
[0046] Figure 2D illustrates an example of several channels in a UL subframe of a frame. A physical random access channel (PRACH) can be comprised of one or more subframes in a frame based on the PRACH configuration. PRACH can include six consecutive RB pairs in a subframe. PRACH allows the UE to perform initial system access and obtain UL synchronization. One channel
Petition 870190041027, of 5/2/2019, p. 24/94
18/59 physical uplink control (PUCCH) can be located at the edges of the UL system bandwidth. 0 PUCCH carries uplink control information (UCL) such as scheduling requests, a channel quality indicator (CAQI), a pre-coding matrix indicator (PMI), a rating indicator (RI), and ACK / NACK feedback HARQ. The PUSCH carries data and can additionally be used to carry a buffer status report (BSR), an energy height report (PHR) and / or UCI.
[0047] Figure 3 is a block diagram of a base station 310 in communication with a UE 350 in an access network. In DL, IP packets from EPC 160 can be delivered to a 375 controller / processor. The 375 controller / processor implements layer 3 and layer 2 functionality. Layer 3 includes a radio resource control layer (RRC ) and layer 2 includes a packet data convergence protocol layer (PDCP), a radio link control layer (RLC) and a media access control layer (MAC). The 375 controller / processor provides RRC layer functionality associated with system information broadcasting (for example, MIB, SIBs), RRC connection control (for example, RRC connection paging, RRC connection establishment, modification of RRC connection, and RRC connection release), mobility of inter-radio access technology (RAT), and measurement configuration for UE measurement report: the PDCP layer functionality associated with header compression / decompression, security ( encryption, decryption, integrity protection,
Petition 870190041027, of 5/2/2019, p. 25/94
19/59 integrity check) and handover support functions; RLC layer functionality associated with the transfer of upper layer packet data units (PDUs), error correction through ARQ, concatenation, segmentation and reassembly of RLC service data units (SDUs), new segmentation of RLC data PDUs , and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs over transport blocks (TBs), demultiplexing of MAC SDUs from TBs, programming information reporting, error correction through HARQ, priority channel handling and prioritization.
[0048] The transmit processor (TX) 316 and the receive processor (RX) 370 implement layer 1 functionality associated with various signal processing functions. Layer 1, which includes a physical layer (PHY), can include error detection in the transport channels, encoding / decoding of the error correction (FEC) of the transport channels, interleaving, rate matching, mapping over physical channels, modulation / demodulation of physical channels and MIMO antenna processing. The TX 316 processor handles mapping for signal constellations based on various modulation schemes (for example, binary phase shift switching (BPSK), quadrature phase shift switching (QPSK), M phase shift switching (M -PSK), M quadrature amplitude modulation (M-QAM)). The coded and modulated symbols can then be divided into parallel streams. Each stream
Petition 870190041027, of 5/2/2019, p. 26/94
20/59 can then be mapped to an OFDM subcarrier, multiplexed with a reference signal (eg pilot) in the time and / or frequency domain, and then combined together using a fast inverse Fourier Transform (IFFT) to produce a channel physical carrying a time domain OFDM symbol stream. The OFDM stream is spatially coded in advance to produce multiple spatial streams. Channel estimates from 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 channel condition feedback transmitted by the UE 350. Each spatial flow can then be supplied to a different antenna 320 via a separate 318TX transmitter. Each 318TX transmitter can modulate an RF carrier with a respective spatial flow for transmission.
[0049] In the UE 350, each 354RX receiver receives a signal through its respective antenna 352. Each receiver 354 retrieves modulated information about an RF carrier and provides the information to the receiving processor (RX) 356. The TX 368 processor and the processor RX 356 implement the LI layer 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
Petition 870190041027, of 5/2/2019, p. 27/94
21/59 from the time domain in frequency domain using a Fast Fourier Transform (FFT). The frequency domain signal comprises a separate OFDM symbol stream for each OFDM signal subcarrier. The symbols on each subcarrier and the reference signal are retrieved and demodulated for determining the most likely signal constellation points transmitted by the eNB 310. These soft decisions can be based on channel estimates computed by the channel estimator 358. Soft decisions are then decoded and deinterleaved to recover the control signals and data that were originally transmitted by eNB 310 on the physical channel. Control and data signals are then provided to the 359 controller / processor that implements layer 3 and layer 2 functionality.
[0050] The controller / processor 359 can be associated with a 360 memory that stores program codes and data. 360 memory can be mentioned as a computer-readable medium. At UL, the 359 controller / processor provides demultiplexing between logical and transport channels, packet reassembly, decryption, header decompression, control signal processing to retrieve IP packets from EPC 160. The 359 controller / processor is also responsible by error detection using an ACK and / or NACK protocol to support HARQ operations.
[0051] Similar to the functionality described with respect to DL transmission by base station 310, the 359 controller / processor provides RRC layer functionality associated with the capture of system information
Petition 870190041027, of 5/2/2019, p. 28/94
22/59 (for example, MIB, SIBs), RRC connections and measurement report; PDCP layer functionality associated with header compression / decompression, and security (encryption, decryption, integrity protection, integrity verification); RLC layer functionality associated with the transfer of top layer PDUs, error correction through ARQ, concatenation, segmentation and re-assembly of RLC SDUs, new segmentation of RLC data PDUs, and reordering of RLC data PDUs and MAC layer functionality associated with the mapping between logical channels and transport channels, multiplexing of MAC SDUs over TBs, demultiplexing of MAC SDUs from TBs, programming information reporting, error correction through HARQ, priority handling and logical channel prioritization.
[0052] Channel estimates derived by a 358 channel estimator 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 facilitate spatial processing. The spatial streams generated by the TX 368 processor can be provided for different antenna 352 via separate transmitters 354TX. Each 354TX transmitter can modulate an RF carrier with a respective spatial flow for transmission.
[0053] The UL transmission is processed at the base station 310 in a similar way to that described with respect to the receiver function in the UE 350. Each receiver 318RX receives a signal through its respective antenna 320. Each receiver 318RX retrieves modulated information about a
Petition 870190041027, of 5/2/2019, p. 29/94
23/59 RF carrier and provides the information for an RX 370 processor.
[0054] The controller / processor 375 can be associated with memories 376 which stores program codes and data. At UL, the 375 controller / processor provides demultiplexing between transport and logic channels, new packet assembly, decryption, header decompression, control signal processing to retrieve IP packets from the UE 350. IP packets from the controller / processor 375 can be supplied to EPC 160. The controller / processor 375 is also responsible for error detection using an ACK and / or NACK protocol to support HARQ operations.
[0055] Figure 4 is a call flow diagram of a 400 wireless communication method. Method 400 can be performed by a transmitter 404 and a receiver 402. In several aspects, transmitter 404 can be a UE (for example, UE 104) and receiver 402 can be a base station (for example, the base station 102). In other respects, transmitter 404 may be a base station (e.g., base station 102) and receiver 402 may be a UE (e.g., UE 104).
[0056] In one aspect, the transmitter 404 can determine 422 a DMRS sequence based on a mother sequence. For example, the DMRS sequence can be a segment of the parent sequence corresponding to RB allocations. The parent sequence can be a predetermined QPSK sequence, Zadoff-Chu (ZC) sequence or another type of sequence. The sequence can be defined in one or more technical specifications, for example, enacted by 3GPP.
Petition 870190041027, of 5/2/2019, p. 30/94
24/59 [0057] In one aspect, transmitter 404 can apply a first offset to the parent sequence to determine 422 the DMRS sequence. The first offset can be applied for downlink communication (for example, when the transmitter 404 is a base station). In another aspect, the transmitter 404 can apply a second offset to the parent sequence to determine 422 the DMRS sequence. The second offset can be applied for uplink communication (for example, when the transmitter 404 is a UE). In one example, the first offset may be different from the second offset. In another example, the first offset can be the same as the second offset. In one aspect, the transmitter 404 may select a segment or portion of the parent sequence to use as the DMRS sequence. The 404 transmitter can select the segment or portion based on the allocated RBs.
[0058] In one aspect, the transmitter 404 can determine 422 the DMRS sequence based on the mother sequence by dividing the mother sequence into a plurality of first segments, clipping each first segment of the plurality of first segments based on a first threshold, and filtering each first segment of the plurality of first segments after clipping to form each second segment of a plurality of second segments. The transmitter 404 can then select or determine a second segment to use as the DMRS string. In a further aspect, the transmitter 404 can cut each second segment from the plurality of second segments based on a second threshold, and filter each second segment after cutting each second segment. The 404 transmitter can then
Petition 870190041027, of 5/2/2019, p. 31/94
25/59 select or determine one of the second cut and filtered segments to use as the DMRS sequence. In one aspect, the transmitter 404 may select a segment (for example, a first segment or a second segment) based on a peak to average energy ratio (PAPR) associated with that segment. For example, transmitter 404 can select a segment with a lower PAPR, or it can select any segment with a PAPR under a PAPR threshold.
[0059] After determining a DMRS sequence, the transmitter 404 can map 424 the DMRS sequence to at least one symbol, for example, the first symbol of a set of RBs in a transmission. The transmission can be DL transmission or UL transmission. If it is the UL transmission, it can be a UL long burst or UL short burst. The first symbol to which the DMRS sequence is mapped can occur at the beginning of the transmission, for example, a long UL burst. In other words, the DMRS sequence can be loaded from the front. In one aspect, transmitter 404 can map 424 the DMRS sequence to subcarriers in the first symbol on a comb structure. In one aspect, the subcarriers mapped 424 to the comb structure can be alternating subcarriers. In another aspect, the subcarriers mapped in the comb structure can be sampled subcarriers descending uniformly (for example, every four subcarriers). In one aspect, transmitter 404 can map 424 the DMRS sequence to a first set of subcarriers in a comb structure to a downlink DMRS (for example, when transmitter 404 is a base station). For example, the 404 transmitter can map
Petition 870190041027, of 5/2/2019, p. 32/94
26/59
424 the DMRS sequence for a plurality of odd index subcarriers (and not for any even indexed subcarriers) as alternating subcarriers or every fourth subcarrier. In another aspect, transmitter 404 can map 424 the DMRS sequence to a second set of subcarriers (different from the first set of alternating subcarriers) in a comb structure for a
Uplink DMRS (per example, When the 404 transmitter it is a HUH) .[0060] On a aspect, the 404 transmitter can map 424 to DMRS string for a first set of subcarriers in a structure of comb for SC-FDM (per
example, for uplink DMRS). For example, transmitter 404 can map 424 the DMRS sequence to a plurality of odd index subcarriers (and not any even index subcarriers) to SC-FDM, as alternating odd index subcarriers or every fourth odd index subcarrier. In another aspect, transmitter 404 can map 424 the DMRS sequence to a second set of subcarriers (different from the first set of alternating subcarriers) in a comb structure for OFDM (for example, for uplink DMRS).
[0061] After mapping the DMRS sequence to at least one symbol, for example, a first symbol in a set of RBs, the transmitter 404 can send a 426 transmission (for example, a subframe, uplink burst, etc.) having a DMRS which includes the DMRS string mapped to at least one symbol, for example, the first symbol. Receiver 402 can receive transmission 426 having the DMRS that includes the DMRS sequence mapped to at least
Petition 870190041027, of 5/2/2019, p. 33/94
27/59 minus a symbol, for example, the first symbol. The receiver 402 can perform channel estimation 428 based on the received DMRS. For example, receiver 402 may attempt to detect the DMRS sequence in the received transmission and may perform channel estimation based on the attempted detection. Channel estimation 428 can be used when transmitter 404 sends additional signals (for example, on a PDCCH for downlink or a PUCCH for uplink) to receiver 402.
[0062] Figure 5 is a block diagram 500 of an uplink-centric signal. In one aspect, a PDCCH 502 can be received, for example, by UE 104 or transmitter 404 from base station 102 or receiver 402. PDCCH 502 can be followed by a protection period (GP) 504, for example, for allow transmitter 404 to switch from receiving to transmitting.
[0063] The GP 504 can be followed by a regular uplink (UL) 508 burst. The regular UL 508 burst can be sent by transmitter 404 to receiver 402, for example, as part of transmission 426. Transmitter 404 may include, in UL 508 regular burst, control data and / or payload from transmitter 404. UL 508 regular burst can include a DMRS 506 sequence, which can indicate a DMRS sequence. The DMRS 506 sequence can be loaded from the front - that is, the transmitter 404 can map the DMRS sequence included in the DMRS 506 sequence to at least one first symbol in a set of RBs corresponding to the regular burst UL 508 (for example, in transmission 426 ). The DMRS sequence loaded from the front 506 can facilitate a faster inversion (for example, between subframes and / or for transmission / reception).
Petition 870190041027, of 5/2/2019, p. 34/94
28/59 [0064] In one aspect, the DMRS 506 sequence can be based on RB locations (for example, based on RBs corresponding to the regular UL 508 burst), for example, rather than based on a number of RBs. Therefore, after an RB Index is known, the DMRS 506 sequence can be known. This approach can facilitate better interference and / or cancellation information, for example, when downlink and uplink interference occurs between neighboring cells with different uplink and / or downlink configurations. In one aspect, the DMRS uplink 506 sequence can be symmetric to a downlink DMRS sequence, which can also be loaded from the front in a regular downlink burst.
[0065] The regular burst UL 508 can be followed by a common burst 510 (for example, common burst UL 510). Common burst 510 can include control data and / or payload. In one aspect, transmitter 404 may include, in common burst 510, UCI. For example, the common burst 510 can include ACK / NACK feedback.
[0066] Figure 6 is a 600 block diagram of a downlink-centric signal. In one aspect, the signal may include a PDCCH 602. Base station 102 or transmitter 404 may transmit PDCCH 602 to UE 104 or receiver 402. PDCCH 602 may be followed by a downlink (DL) PDSCH 606. PDSCH DL 606 can be followed by a GP 608.
[0067] GP 608 can be followed by a common burst 610. In one aspect, the common burst 610 can include control data and / or payload. For example, common burst 610 can include ACK / NACK data.
[0068] The PDSCH DL 606 can include a DMRS 604 string. The DMRS 604 string can be loaded
Petition 870190041027, of 5/2/2019, p. 35/94
29/59 from the front - that is, the DMRS sequence 604 can be mapped to at least one first symbol in a set of RBs corresponding to the PDSCH DL 606. The DMRS sequence loaded from the front 604 can facilitate quick inversion (for example between subframes for transmit / receive).
[0069] In one aspect, the DMRS 604 sequence can be based on RB locations (for example, based on RBs corresponding to PDSCH DL 606), for example, rather than based on a number of RBs. Therefore, after an RB index is known, the DMRS sequence included in the DMRS 604 sequence can be known. This approach can facilitate better interference and / or cancellation information, for example, when downlink and uplink interference occurs between neighboring cells with different uplink and / or downlink configurations.
In one aspect, the transmitter 404 can transmit the DMRS 604 sequence on the PDSCH DL 606. In the downlink, a cell-specific reference signal (CRS) may be missing and only the DMRS 604 sequence can occur.
[0071]
Figure 7 illustrates an example 700 of another sequence on which a DMRS sequence can be based. Aspects described with respect to figure 7 can be applicable to both a downlink DMRS sequence (for example, DMRS 604 sequence) and an uplink DMRS sequence (for example, DMRS 506 sequence). In one aspect, the mother sequence 702 can be a broadband sequence. The mother sequence 702 can be a previously selected QPSK sequence or ZC sequence that has a relatively PAPR
Petition 870190041027, of 5/2/2019, p. 36/94
30/59 low (for example, compared to at least another stream) when used for broadband transmission. In one aspect, the DMRS sequence as a segment of the parent sequence can also have a relatively low PAPR. In one aspect, the mother sequence 702 can also be a pseudo noise (PN) sequence.
[0072] In one aspect, the DMRS sequence (for example, the DMRS sequence 604) and an uplink DMRS sequence (for example, the DMRS sequence 506) can use the same mother sequence 702. However, different cyclic shifts can be applied in so that the DMRS downlink sequence is different from the uplink DMRS sequence. For example, the DMRS uplink sequence can be generated based on a first set of offsets for the mother sequence 702, whereas the DMRS sequence can be generated based on a different set of offsets for the mother sequence 702. In one aspect , UL and DMRS UL can also use the same mother sequence with the same offsets.
[0073] In one aspect, a DMRS sequence can have a comb structure. That is, a DMRS sequence can be transmitted in a sampled subcarrier uniformly descended, for example, alternating subcarrier, in the DMRS symbol in a comb structure. However, a downlink DMRS string (for example, DMRS 604 string) can use a first set of tones (for example, even tones), while an uplink DMRS string (for example, DMRS 506 string) can use a second tone set (for example, odd tones).
[0074] In one aspect, a waveform
Petition 870190041027, of 5/2/2019, p. 37/94
31/59 associated with the uplink DMRS sequence (for example, the DMRS 506 sequence) can be SC-FDM or OFDM. In aspects, the DMRS uplink sequence can use different combs depending on whether the waveform is SC-FDM or OFDM. For example, a DMRS sequence associated with an SC-FDM waveform can use a first set of tones (for example, even tones) whereas a DMRS sequence associated with OFDM can use a second set of tones (for example, tones odd numbers).
[0075] According to one aspect, a first UE (e.g. UE 104, transmitter 404, etc.) can use a first segment 704 associated with the mother sequence 702. Similarly, a second UE can use a second segment 706 associated with the mother sequence 702, and a third UE can use a third segment 708 associated with the mother sequence 702. The reference signal symbols (RS) 710 of a DMRS sequence (for example, the first segment 704) can be followed by symbols data 712 - that is, RS 710 symbols can be loaded from the front in a set of RBs, which can include data symbols 712. In one aspect, each segment 704, 708 can be allocated based on the mother string 702 per UE . For example, a first segment 704 can be allocated to a first UE, whereas a different segment 706 corresponding to the mother sequence 702 can be allocated to a different UE.
[0076] Figure 8 is a diagram illustrating an approach to reduce PAPR of the DMRS sequence based on clipping and filtration. In several respects, a sequence 800 (for example, a segment 704, 706, 708 of the mother sequence 7 02 or mother sequence 7 02) may not have a PAPR that is acceptable for transmission. Therefore, a transmitter (for example,
Petition 870190041027, of 5/2/2019, p. 38/94
32/59 example, transmitter 404) can apply cutout 804 and filtration 86 to reduce PAPR. In one aspect, the 800 sequence may be inapplicable to SC-FDM or the 800 sequence may be length dependent for SC-FDM so that the 800 sequence is not orthogonal to an OFDM RS.
[0077] In one aspect, the 800 sequence can be in the frequency domain. An Inverse Fast Fourier Transform (IFFT) 802 can be applied (for example, by the transmitter 404) to the 800 sequence to transform the sequence into a time domain. In the time domain, cutout 804 from sequence 800 can be applied (for example, by transmitter 404) based on a cutout threshold 805, for example, to remove peaks from sequence 800. In one aspect, cutout 804 can be applied (for example, by the transmitter 404) based on the formula x_i = sign (x_i) * r * p_bar if p_x_i> r * p_bar, where x_i is the sequence 800 (in the time domain), p_bar is the average power, p_x_i is the power of a sample of the sequence 800, and r is the cut-off threshold 805.
[0078] Cutout 804 can cause leakage to other bands and, therefore, filtration 806 can be applied (for example, by transmitter 404). Filtration 806 may include applying a bandpass filter to the clipped sequence 800. A fast Fourier transform 808 can be applied to the clipped and filtered sequence 800 to transform the sequence 800 back into the frequency domain.
[0079] The PAPR of the cut and filtered sequence 800 can then be determined and compared with a threshold (for example, by the transmitter 404). If PAPR
Petition 870190041027, of 5/2/2019, p. 39/94
33/59 is below (or meets) the threshold, then an IFFT 802 can be applied again to the 800 sequence so that the 800 sequence can be sent (for example, in a DMRS as a DMRS sequence). If the PAPR exceeds the threshold, another iteration 810 can be performed for clipping 804 and filtration 806. In several respects, threshold 805 may be different for an iteration of clipping 804 and filtration 806 of the 800 sequence.
[0080] Figure 9 illustrates an approach for cropping and filtering segments of a parent sequence. In figure 9, cropping and filtration is applied (for example, by the transmitter 404) to reduce PAPR. The cropping and filtering of figure 9 can include the approach described in figure 8.
[0081] How shown, a sequence mother original 900 can to be divided in a plurality in segments 904, 906, 908, 910, 912. Each 904 segment, 906,
908, 910, 912 may have one length L. For each segment 904, 906, 908, 910, 912, a cutout and respective filter 920, 922, 924, 926, 928 runs (per example, at
404 transmitter). Each cut and filter 920, 922, 924, 926, 928 can reduce the PAPR to a respective segment 904, 906, 908, 910, 912.
[0082] The cut and filter 920, 922, 924, 926,
928 for each segment 904, 906, 908, 910, 912 can generate a new mother sequence 940. However, the frequency domain signals for each segment 904, 906, 908,
910, 912 can be distorted and therefore the PAPR of the new mother sequence 940 may increase compared to the original mother sequence 900. Therefore, the threshold of
Petition 870190041027, of 5/2/2019, p. 40/94
34/59 cutout (for example, threshold 805) can be selected so that the PAPR of the new mother sequence 940 (for example, a broadband sequence) is comprised within an acceptable range and, in addition, a respective PAPR of each segment 904, 906, 908, 910, 912 (for example, a subband sequence) having length L is also comprised in an acceptable range (other subband sequences with different length (s), other than L, they may still have a relatively high PAPR).
[0083] Figure 10 illustrates an approach to clipping and filtering segments of a mother sequence. In figure 10, cropping and filtration are applied to reduce PAPR. The cropping and filtering of figure 10 can include the approach described in figure 8, including an iteration 810. With respect to figure 4, transmitter 404 can perform cropping and filtration illustrated in figure 10.
[0084] As shown, an original mother string 1000 can be divided into a first set of segments 1002, 1004, 1006, 1008. Each segment 1002, 1004, 1006, 1008 can have a length L (for example, the first set of segments 1002, 1004, 1006, 1008 can have a length that is one quarter of the total length of the original parent sequence 1000). For each segment 1002, 1004, 1006, 1008, a respective cut and filter 1010, 1012, 1014, 1016 is performed. Each cut and filter 1010, 1012, 1014, 1016 can reduce the PAPR to a respective segment 1002, 1004, 1006, 1008 of the first set of segments.
[0085] The cut and filter 1010, 1012, 1014, 1016 for each segment 1002, 1004, 1006, 1008 of the first
Petition 870190041027, of 5/2/2019, p. 41/94
35/59 set of segments can generate a first new mother 1020 sequence. However, the customer domain signal for the first new mother 1020 sequence can be distorted and may have an unacceptable PAPR. Therefore, cropping and filtering can be performed iteratively.
[0086] The first new mother string 1020 can be divided into a second set of segments 1022, 1024, 1026, 1028, 1030, 1032, 1034, 1036. Each segment 1022, 1024, 1026, 1028, 1030, 1032, 1034, 1036 of the second set may have a length R, which may be different from the length L (for example, the second set of segments 1024, 1026, 1028, 1030, 1032, 1034, 1036 may each have a length which is an eighth the total length of the first new mother sequence 1020).
[0087] For each segment 1022, 1024, 1026, 1028, 1030, 1032, 1034, 1036 of the second set, a cut-out and respective filter 1040, 1042, 1044, 1046, 1048, 1050, 1052, 1054 is executed. Each cut and filter 1040, 1042, 1044, 1046, 1048, 1050, 1052, 1054 can reduce the PAPR to a respective segment 1002, 1004, 1006, 1008 of the first set of segments. As described with reference to figure 8, the cutout can be performed according to a threshold 805. However, the threshold for the cutout and filter 1040, 1042, 1044, 1046, 1048, 1050, 1052, 1054 of the second set of segments 1022 , 1024, 1026, 1028, 1030, 1032, 1034, 1036 can be different from the cut-off and filter threshold 1010, 1012, 1014, 1016 of the first set of segments 1002, 1004, 1006, 1008.
[0088] The cut and filter 1040, 1042, 1044, 1046, 1048, 1050, 1052, 1054 for each segment 1022, 1024,
Petition 870190041027, of 5/2/2019, p. 42/94
36/59
1026, 1028, 1030, 1032, 1034, 1036 of the second set of segments can generate a second new mother sequence 1060. The
cut and filter 1040, 1042, 1044, 1046, 1048, 1050, 1052, 1054 for each segment 1022, 1024, 1026, 1028, 1030, 1032, 1034, 1036 of the second set of segments can • to be displaced of the segments 1022, 1024, 1026, 1028, 1030, 1032,
1034, 1036. If the second new mother string has an acceptable PAPR (for example, within a desired range)
then the second sequence mother nova 1060 can be used. [0089] Although The figure 10 illustrate two iterations, any number in iterations can be executed.
For example, if the PAPR of the second new mother sequence 1060 is not acceptable, then another iteration can be performed. In the third iteration, the second new mother sequence 1060 can be divided into segments that are each sixteenth of the total length of the second new mother sequence 1060. In addition, the threshold used for clipping in the third iteration may be different from the thresholds used for clipping in the first and / or second iterations.
[0090] Additional iterations can be performed until a parent sequence with an acceptable PAPR is obtained.
[0091] In one aspect, the segments (for example, the first set of segments 1002, 1004, 1006, 1008 or the second set of segments 1022, 1024, 1026, 1028, 1030, 1032, 1034, 1036) can be used for SC-FDM.
[0092] In several respects, the mother sequence can be defined in one or more technical specifications (TS) that define standards for wireless communication (for example, a TS enacted by 3GPP). In one respect,
Petition 870190041027, of 5/2/2019, p. 43/94
37/59 mother sequence can be defined by explicitly defining a final mother sequence (for example, the new mother sequence 1020, the second new mother sequence 1060) in a TS. The final mother string may not be closely related. In addition, a plurality of different sequences (e.g., 30) can be defined for each possible system bandwidth. The definition of the mother sequence by specifying the final sequence in a TS may require relatively large tables.
[0093] In another aspect, a TS can define the original mother sequence - that is, before cutting and filtering iterations (for example, the original mother sequence 900, the original mother sequence 1000). The original parent sequence can have an expression in close proximity (for example, Chu sequence). In addition, TS can specify a number of cropping and filtering iterations or levels to obtain the desired new mother sequence for transmission. TS can additionally define a segment length and a respective cut-off threshold for each iteration or level. Therefore, both a UE (e.g., UE 104) and a base station (e.g., base station 102) can apply trimming and filtering to the defined iterations or levels to obtain the same new parent sequence. The UE and base station could perform one or more iterations or levels offline and store the new mother sequence obtained in memory.
[0094] Figure 11 illustrates a call flow diagram for an 1100 wireless communication method. The 1100 method of wireless communication may include uplink resource allocation with granularity depending on size
Petition 870190041027, of 5/2/2019, p. 44/94
38/59 allocation. Resource allocation can have any number of RBs starting from any RB. Thus, for a relatively large system bandwidth, a large number of bits in a PDCCH can be used. For example, for a system bandwidth of 25 RBs, 5 bits may be required for a starting RB and 5 bits for the number of RBs. For allocation of multiple clusters, the allocation and bits can be specified for each cluster.
[0095] Different granularities can be used for different allocation sizes. In one aspect, the granularity can be proportional to the determined number of RBs allocated to at least one UE (for example, UE 1104). In this way, a smaller granularity can be used for a smaller allocation, whereas a larger granularity can be used for a larger allocation. For example, for a total of 25 RBs, there can be 4 levels of granularity. For an allocation less than or equal to 4, the granularity can be an RB, starting from any N RB (for example, N = 0, 1, ...). For an allocation even between 5 and 8, the granularity can be 2 RBs, starting from 2 * N RB. For an allocation even between 9 and 16, the granularity can be 4 RBs, starting from 4 * N RB. Similarly, for an allocation even between 17 and 25, the granularity can be 8 RBs, starting from 8 * N RB.
[0096] Granularity based on allocation size may require less number of bits for allocation. For example, if the number of RBs is relatively small, more bits can be used to specify a starting RB, but fewer bits can be used to specify
Petition 870190041027, of 5/2/2019, p. 45/94
39/59 a number of RBs for allocation. If the number of RBs for allocation is relatively large, fewer bits can be used to specify a starting RB, but more bits can be used to specify the number of RBs for allocation. For example, for an allocation having a granularity of an RB, 5 bits can be used to indicate the starting RB and 2 bits can be used to specify the number of RBs. For an allocation having a granularity of two RBs, 4 bits can be used to indicate the starting RB and 2 bits can be used to specify the number of RBs. For an allocation having a granularity of four RBs, 3 bits can be used to indicate the starting RB and 3 bits can be used to specify the number of RBs. For an allocation having a granularity of 8 RBs, 2 bits can be used to indicate the starting RB and 4 bits can be used to specify the number of RBs.
[0097] In aspects, 2 bits may be required to indicate the level of granularity, which can total a maximum of 9 bits (for example, 5 bits to indicate starting RB, 2 bits to indicate the number of RBs and 2 bits for indicate granularity, which is less than 10 bits needed in existing approaches). The number of bits can be further reduced if the possible locations are reduced. For example, for an allocation size = 2 ^Λ Ν (1, 2, 4, 8, 16, 25), starting from each 2 ^Λ Ν (1, 2, 4, 8, 16, 25) limit, then 3 bits can be used for 5 levels, and 5 bits for starting RBs, which total 8 bits.
[0098] In one aspect, base station 1102 can determine 1120 a number of RBs and a starting RB. Per
Petition 870190041027, of 5/2/2019, p. 46/94
40/59 example, base station 1102 can determine allocation information associated with UE 1104. In addition, base station 1102 can determine 1122 a granularity associated with the number of RBs and the starting RBs. In aspects, base station 1102 can determine granularity based on allocation size (for example, the number of RBs allocated to UE 1104). Base station 1102 can determine the granularity as proportional to the number of allocated RBs (for example, a larger granularity can be commensurate with a larger allocation size). In one aspect, the allocation size and granularity can be cell specific. Base station 1102 can determine a combination of allocation size and granularity and assign that combination to UE 1104.
[0099] The base station 1102 can send information 1124 to the UE 1104 indicating granularity. In one aspect, information 1124 can be displayed using 2 bits. In one aspect, information 1124 may include an index associated with granularity. In one aspect, information 1124 can be loaded into a PDCCH.
[00100] The base station 1102 can also send information to the UE 1104 indicating the starting RB (for example, indicated using 5 bits) and information indicating a number of RBs (for example, indicated using 2 bits). This information can be loaded into a PDCCH.
[00101] UE 1104 can receive information 1124 indicating granularity and information indicating the starting RB and the number of RBs. UE 1104 can determine 1126 granularity based on information 1124 indicating granularity. For example, if the information
Petition 870190041027, of 5/2/2019, p. 47/94
41/59
1124 indicating granularity to include an index, the UE
1104 can reference a TS (for example, 3GPP TS) for
to determine a level of granularity that corresponds to index. [00102] 0 EU 1104 can then determine 1128 The allocation appeal for EU 1104 based at
granularity, the starting RB and the number of RBs. UE 1104 can then receive, from base station 1102, a downlink signal 1130. UE 1104 can detect the downlink signal based on the resource allocation which is determined from the granularity, starting RB and the number of RBs.
[00103] In one aspect, a base station 1102 can receive at least one of an allocation size or a granularity from a neighboring cell. Base station 1102 can send an indication of at least one of the allocation size or granularity to a UE 1104. When operating in a cell provided by base station 1102, the UE 1104 can perform blind interference estimation and, if necessary, cancel the experience mixed interference (for example, when two cells have different downlink and uplink configurations). For mixed interference, UE 1104 can receive all possible combinations from a neighboring cell and try every hypothesis for canceling blind interference, since the UE does not know the specific allocated combination for the specific interfering UE.
[00104] When UE 1104 is close to a cell border and in a downlink receiving mode, UE 1104 may receive interference from another UE in an uplink transmission mode in a different cell. However, UE 1104 can perform interference estimation and
Petition 870190041027, of 5/2/2019, p. 48/94
42/59 cancellation using allocation size and granularity information from the neighboring cell. At least one of an allocation size or granularity can decrease the complexity for estimating interference and cancellation because the total number of hypotheses can be less than if the granularity was absent.
[00105] In the illustrated aspect of figure 12, different granularities can be used for different allocation sizes. In one aspect, the granularity can be proportional to the determined number of resource blocks allocated to at least one UE 1104. In this way, a smaller granularity can be used for a smaller allocation, whereas a larger granularity can be used for an allocation bigger. For example, for a total of 25 RBs, there can be 4 levels of granularity. For a 1200 allocation less than or equal to 4, the granularity can be an RB 1210, starting from any N RB (for example, N = 0, 1, ...). For an allocation 1202 even between 5 and 8, the granularity can be 2 RBs 1212, starting from 2 * N RB. For an allocation 1204 even between 9 and 16, the granularity can be 4 RBs 1214, starting from 4 * N RB. Similarly, for an allocation even between 17 and 25, the granularity can be 8 RBs, starting from 8 * N RBH.
[00106] Granularity based on allocation size may require less number of bits for allocation. For example, if the number of RBs is relatively small, more bits can be used to specify a starting RB, but fewer bits can be used to specify a number of RBs for allocation. If the number of RBs for allocation is relatively large, fewer bits can be
Petition 870190041027, of 5/2/2019, p. 49/94
43/59 used to specify a starting RB, but more bits can be used to specify the number of RBs for allocation. For example, for an allocation 1200 having a granularity of an RB 1210, 5 bits can be used to indicate the starting RB and 2 bits can be used to specify the number of RBs. For an allocation 1214 having a granularity of four RBs 1214, 3 bits can be used to indicate the starting RB and 3 bits can be used to specify the number of RBs. For an allocation having a granularity of 8 RBs, 2 bits can be used to indicate the starting RB and 4 bits can be used to specify the number of RBs.
[00107] Figure 13 is a flow chart of a 1300 wireless communication method. Method 1300 can be performed by an apparatus, a transmitter (for example, the transmitter 404), a UE (for example, the UE 102), a base station (for example, the base station 104), or other communication system wireless. A person with common knowledge would understand that one or more operations can be obtained, transposed and or executed in a contemporary way.
[00108] In operation 1302, the device can determine a DMRS sequence based on a mother sequence. In the context of Figure 4, the transmitter 404 can determine a DMRS sequence based on a mother sequence. In one aspect, the mother sequence can be the mother sequence 702.
[00109] In one aspect, operation 1302 can include operations 1310, 1312, 1314. In one aspect, operations 1310, 1312, 1314 can be described in one or
Petition 870190041027, of 5/2/2019, p. 50/94
44/59 more of figures 8, 9, 10. In operation 1310, the apparatus can divide the mother sequence into a plurality of first segments. In the context of figure 4, the transmitter 404 can divide the mother sequence into a plurality of first segments (for example, the first segments 904, 906, 908, 910, 912).
[00110] In operation 1312, the device can cut each first segment of the plurality of first segments based on a first threshold. In the context of figure 4, the transmitter 404 can cut each first segment of the plurality of first segments based on a first threshold. For example, the device can apply cutout 804 based on threshold 805.
[00111] In operation 1314, the device can filter each first segment of the plurality of first segments after clipping. In the context of figure 4, the transmitter 404 can filter each first segment of the plurality of first segments after clipping. For example, the device can apply filtration 806 after cut 804. In one aspect, the segment can be used as a DMRS sequence or it can be part of a new parent sequence.
[00112] In operation 1304, the device can map the DMRS sequence to at least one first symbol of a set of RBs in a transmission. In one aspect, the first symbol can occur at the beginning of the transmission, in the Context of figure 4, the transmitter 404 can map the DMRS sequence to at least one first symbol of a set of RBs in a transmission. For example, transmitter 404 can be a base station and can map the
Petition 870190041027, of 5/2/2019, p. 51/94
45/59 DMRS sequence 604 to at least a first symbol of the PDSCH DL 606. In another example, the transmitter 404 can be a UE and can map the DMRS sequence 506 to at least one first symbol of the regular burst UL 508.
[00113] In operation 1306, the device can send the DMRS including the DMRS sequence mapped in the first symbols of the set of RBs. In the context of figure 4, the transmitter 404 can send a transmission 426 that includes the DMRS having the DMRS sequence mapped to the first symbols of the set of RBs. For example, transmitter 404 may be a base station and may transmit downlink DMRS sequence 604. In another example, transmitter 404 may be a UE and may transmit uplink DMRS sequence 506.
[00114] Figure 14 is a flow chart of a 1400 wireless communication method. Method 1400 can be performed by a device, such as a UE (e.g., UE 104, UE 1104, etc.) or another wireless communication system. A person with common knowledge would understand that one or more operations can be omitted, transposed and or performed in a contemporary way.
[00115] In operation 1402, the UE can receive information associated with resource allocation from a base station. In one respect, resource allocation information can indicate a starting RB and a number of RBs. In one aspect, resource allocation information can indicate a granularity (for example, a granularity index). Resource allocation information can be received at a PDCCH. In the context of figure 11, UE 1104 can receive information associated with resource allocation, which includes information 1124 indicating
Petition 870190041027, of 5/2/2019, p. 52/94
46/59 granularity.
[00116] In operation 1404, the UE can determine a granularity based on the information received associated with the resource allocation. For example, the UE can identify a granularity index included in the resource allocation information, and the UE can reference stored data (for example, a lookup table) to determine a granularity that corresponds to the granularity index. In the context of Figure 11, UE 1104 can determine 1126 granularity based on information 1124 associated with granularity.
[00117] In operation 1406, the UE can determine a resource allocation based at least in part on granularity. For example, the UE can determine one or more resources to monitor at the given granularity, starting with a starting RB indicated for the UE in the resource allocation information received. The UE can then monitor the number of RBs at the given granularity starting with the starting RB. In the context of Figure 11, UE 1104 can determine 1128 the resource allocation for UE 1104 based on the determined granularity.
[00118] In operation 1408, the UE can receive a signal loaded in the allocated resources. For example, the UE can receive a downlink transmission and detect a signal destined for the UE loaded in the resources determined at the determined granularity. In the context of Figure 11, the UE 1104 can receive the downlink signal 1130 in the resources allocated to the UE 1104.
[00119] Figure 15 is a conceptual data flow diagram 1500 illustrating the data flow between
Petition 870190041027, of 5/2/2019, p. 53/94
47/59 different components / means in an example apparatus 1502. The apparatus may be a UE or a base station. The apparatus includes a receiving component 1504 that is configured to receive signals. Apparatus 1502 includes a transmission component 1510 that is configured to transmit signals (for example, to receiver 1550).
[00120] Apparatus 1502 may include a sequence component 1506. In aspects, sequence component 1506 may determine a DMRS sequence based on a parent sequence. The sequence component 1506 can map the DMRS sequence to at least one symbol, for example, a first symbol from a set of RBs in a transmission. The first symbol occurs at the beginning of the transmission (for example, subframe or burst). In one aspect, the DMRS sequence is mapped to a subset of subcarriers sampled downwardly uniformly, for example, alternating subcarrier, in the DMRS symbol, for example, the first symbol in a comb structure. In one aspect, the DMRS sequence is mapped to a first set of alternating subcarrier in a comb structure for a downlink DMRS, and where the DMRS sequence is mapped to a different set of alternating subcarrier in a comb structure to an uplink DMRS . In one aspect, the DMRS sequence is mapped to a first set of alternating subcarrier in a comb structure in an uplink DMRS for SC-FDM, and the DMRS sequence is mapped to a different set of alternating subcarrier in a comb structure in one DMRS uplink to OFDM. In one aspect, the DMRS sequence is based on a first shift from the parent sequence to a DMRS
Petition 870190041027, of 5/2/2019, p. 54/94
48/59 downlink and where the DMRS sequence is based on a second offset from the parent sequence to an uplink DMRS (for example, the second offset can be the same or different from the first offset). In one aspect, the first and second displacements can be different. In one aspect, the first and second displacements can be the same. In one aspect, the DMRS sequence is based on a segment of the parent sequence, and the segment is based on allocated RBs.
[00121] The sequence component 1506 can determine the DMRS sequence based on the mother sequence by dividing the mother sequence into a plurality of first segments, clipping each first segment from the plurality of first segments based on a first threshold, and filtering each first segment of the plurality of segments after cutting to form each second segment of a plurality of second segments. In one aspect, the sequence component 1506 can further determine the DMRS sequence based on the parent sequence by cutting each second segment based on a second threshold and filtering each second seed after cutting each second segment. In one respect, a respective PAPR associated with each first segment is equal to or less than a PAPR threshold.
[00122] The apparatus may include additional components that execute each of the algorithm blocks in the aforementioned flowcharts of figures 4 and 13. As such, each block in the aforementioned flowcharts of figures 4 and 13 can be executed by a component and the apparatus include one or more of those components. The components
Petition 870190041027, of 5/2/2019, p. 55/94
49/59 can be one or more hardware components specifically configured to perform the mentioned processes / algorithm, implemented by a processor configured to execute the mentioned processes / algorithm, stored on a computer-readable medium for implementation by a processor or some combination of the themselves.
[00123] Figure 16 is a diagram 1600 illustrating an example of a hardware implementation for a device 1502 'employing a processing system 1614. The processing system 1614 can be implemented with a bus architecture, represented in general by the 1624 bus The 1624 bus can include any number of interconnect buses and bridges depending on the specific application of the 1614 processing system and design limitations in general. The 1624 bus links together several circuits including one or more processors and / or hardware components, represented by the 1604 processor, the 1504, 1506, 1510 components and the 1606 computer-readable media / memory. The 1624 bus can also connect several other circuits such as timing sources, peripherals, voltage regulators and power management circuit, which are well known in the art, and therefore will not be described further.
[00124] The processing system 1614 can be coupled to a 1610 transceiver. The 1610 transceiver is coupled to one or more 1620 antennas. The 1610 transceiver provides a means to communicate with various other devices via a transmission medium. The 1610 transceiver
Petition 870190041027, of 5/2/2019, p. 56/94
50/59 receives a signal from one or more antennas 1620, extracts information from the received signal and provides the extracted information to the processing system 1614, specifically the receiving component 1504. In addition, the transceiver 1610 receives information from the processing system 1614, specifically the transmission component 1510, and based on the information received, generates a signal to be applied to one or more antennas 1620. Processing system 1614 includes a processor 1604 coupled to a computer-readable memory / media 1606. Processor 1604 is responsible for general processing, including running software stored in computer-readable memory / media 1606. The software, while run by processor 1604, causes processing system 1614 to perform the various functions described above for gualguer specific device. Computer-readable memory / media 1606 can also be used to store data that is handled by processor 1604 when running software. The processing system 1614 further includes at least one of the components 1504, 1506, 1510. The components can be software components running on processor 1604, resident / stored in computer readable memory / media 1606, one or more hardware components coupled to the 1604 processor or some combination thereof. If apparatus 1502 is a base station, processing system 1614 may be a component of base station 310 and may include memory 376 and / or at least one of the TX 316 processor, RX 370 processor and processor / controller 375. If device 1502 is a UE,
Petition 870190041027, of 5/2/2019, p. 57/94
51/59 the processing system 1614 may be a component of the UE 350 and may include memory 360 and / or at least one between the TX 368 processor, the RX 356 processor and the 359 controller / processor.
[00125] In one configuration, the device 1502/1502 'for wireless communication includes means for receiving a DMRS sequence based on a mother sequence, means for mapping the DMRS sequence to at least a first symbol of a set of RBs in a streaming. In one aspect, the first symbol can occur at the beginning of the transmission. Apparatus 1502/1502 'may include means for sending a DMRS sequence including the DMRS sequence mapped to the first symbol in the set of RBs. In one aspect, the DMRS sequence is mapped to subcarriers at the first symbol in a comb structure. In one aspect, the DMRS sequence is mapped to a first set of subcarriers in a comb structure for a downlink DMRS and where the DMRS sequence is mapped to a different set of subcarriers in a comb structure for an uplink DMRS. In one aspect, the DMRS sequence is mapped to a first set of subcarriers in a comb structure in an uplink DMRS for SC-FDM, and in which the DMRS sequence is mapped to a different set of subcarriers in a comb structure in one DMRS uplink to OFDM. In one aspect, the DMRS sequence is based on a first shift from the parent sequence to a downlink DMRS and the DMRS sequence is based on a second shift from the mother sequence to an uplink DMRS. In one aspect, the first displacement can be equivalent to the first displacement or the second displacement can be
Petition 870190041027, of 5/2/2019, p. 58/94
52/59 different from the first offset. In one aspect, the DMRS sequence is based on a segment of the parent sequence, and the segment is based on allocated RBs. In one aspect, the means for determining the DMRS sequence based on the mother sequence is configured to divide the mother sequence into a plurality of first segments, cut each first segment from the plurality of first segments based on a first threshold and filter each first segment of the plurality of segments after cutting to form each second segment of a plurality of second segments. In one aspect, the means for determining the DMS sequence based on the parent sequence is configured to cut each second segment based on a second threshold, and to filter each second segment after cutting each second segment. In one respect, a respective PAPR associated with each first segment is equal to or less than a PAPR threshold.
[00126] The aforementioned medium can be one or more of the aforementioned components of the apparatus 1502 and / or the processing system 1614 of the apparatus 1502 'configured to perform the functions recited by the aforementioned means. When apparatus 1502/1502 'is a base station, as described above, processing system 1614 may include processor TX 316, processor RX 370, and controller / processor 375. As such, in one configuration, the above means mentioned may be Processor TX 316, Processor RX 370 and controller / processor 375 configured to perform the functions recited by the means mentioned above.
[00127] When the device 1502/1502 'is a UE,
Petition 870190041027, of 5/2/2019, p. 59/94
53/59 as described above, processing system 1614 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 controller / processor 359 configured to perform the functions mentioned by the means mentioned above.
[00128] Figure 17 is a 1700 conceptual data flow diagram illustrating the data flow between different components / media in an exemplifreader 1702 apparatus. The apparatus may be a UE. The apparatus 1702 includes a receiving component 1704 that is configured to receive signals (for example, from the base station 1750). Apparatus 1702 includes a transmission component configured to transmit signals (for example, to the 1750 base station).
[00129] In aspects, the receiving component 1704 can receive information associated with the allocation of resources and provide such information for a determination component 1706. The determining component 1706 can determine a granularity based on the information associated with the allocation and resources. For example, the information received can include an index, and the determination component 1706 can access stored data to identify a value that matches the index (for example, the value can match granularity). Determination component 1706 can determine resource allocation based at least in part on granularity. For example, the information received may additionally include a starting RB (for example,
Petition 870190041027, of 5/2/2019, p. 60/94
54/59 a starting RB index) and a number of RBs allocated to the 1702 apparatus. In one aspect, the granularity is proportional to the number of RBs allocated to the UE by resource allocation. The granularity can be a number of RBs (for example, 1,2, 4 or 8). Determination component 1706 can determine that the resource allocation corresponds to the starting RB at the granularity determined for the number of RBs.
[00130] The determination component 1706 can indicate, for the receiving component 1704, the resources determined to be allocated to the device 1702. The receiving component 1704 can monitor those resources. Receiving component 1704 can receive a signal loaded in resources corresponding to the allocation of resources.
[00131] In one aspect, the receiving component 1704 can receive at least one of an indication of an allocation size or a granularity associated with a neighboring cell for estimating blind interference associated with mixed interference. Receiving component 1704 can perform interference cancellation based on the indication received.
[00132] The apparatus may include additional components that execute each of the algorithm blocks in the aforementioned flow charts of figures 11 and 14. As such, each block in the aforementioned flow charts of figures 11 and 14 can be executed by a component and the apparatus can include one or more of those components. The components can be one or more hardware components specifically configured to perform the
Petition 870190041027, of 5/2/2019, p. 61/94
55/59 mentioned processes / algorithm, implemented by a processor configured to execute the mentioned processes / algorithm, stored in a computer-readable media for implementation by a processor, or some combination thereof.
[00133] Figure 18 is a diagram 1800 illustrating an example of a hardware implementation for an apparatus 1702 'employing a processing system 1814. The processing system 1814 can be implemented with a bus architecture, represented in general by the 1824 bus The 1824 bus may include any number of buses and interconnection bridges depending on the specific application of the 1814 processing system and general design limitations. The 1824 bus links together several circuits including one or more processors and / or hardware components, represented by the 1804 processor, the 1704, 1706, 1710 components, and the 1806 computer / memory readable media. The 1824 bus can also connect several others circuits such as timing sources, peripherals, voltage regulators and power management circuits, which are well known in the art, and therefore will not be described further.
[00134] The 1814 processing system can be coupled to an 1810 transceiver. The 1810 transceiver is coupled to one or more 1820 antennas. The 1810 transceiver provides a means of communicating with various other devices via a transmission medium. The transceiver 1810 receives a signal from one or more antennas 1820, extracts information from the received signal and provides the
Petition 870190041027, of 5/2/2019, p. 62/94
56/59 information extracted to the processing system 1814, specifically the receiving component 1704. In addition, the transceiver 1810 receives information from the processing system 1814, specifically the transmitting component 1710, and based on the information received, generates a signal to be applied to one or more 1820 antennas. The 1814 processing system includes a 1804 processor coupled to a 1806 computer-readable memory / media. The 1804 processor is responsible for general processing, including running software stored in the readable memory / media. per computer 1806. The software, when run by the 1804 processor, causes the 1814 processing system to perform the various functions described above for any specific device. The 1806 computer-readable memory / media can also be used to store data that is handled by the 1804 processor when running software. The processing system 1814 further includes at least one of the components 1704, 1706, 1710. The components may be software components that run on the 1804 processor, resident / stored in 1806 computer-readable memory / media, one or more hardware components coupled 1804 processor or some combination thereof. The processing system 1814 can be a component of the UE 350 and can include memory 360 and / or at least one between the TX 368 processor, the RX 356 processor and the 359 controller / processor.
[00135] In a configuration, the device 1702/1702 'for wireless communication includes means to receive information associated with the allocation of resources, means
Petition 870190041027, of 5/2/2019, p. 63/94
57/59 to determine granularity based on information associated with resource allocation, a means of determining resource allocation based at least in part on
granularity, and means for to receive one loaded signal in resources corresponding to allocation in resources. In one aspect, granularity is proportional to the number in RBs allocated to the EU by allocation in resources . In one
In this respect, the information associated with the allocation of resources includes one or more of a starting RB, a number of RBs, or granularity index. In one aspect, the granularity corresponds to a number of RBs. In one respect, the number of RBs is one, two, four or eight. Apparatus 1702/1702 'may include means for receiving at least one of an allocation size indication or a granularity associated with a neighboring cell for estimating blind interference associated with mixed interference.
[00136] The aforementioned medium can be one or more of the aforementioned components of the apparatus 1702 and / or the processing system 1814 of the apparatus 1702 'configured to perform the functions recited by the aforementioned means. As described above, processing system 1814 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 controller / processor 359 configured to perform the functions recited by the means mentioned above.
[00137] It is understood that the specific order or hierarchy of blocks in the revealed processes / flowcharts is an illustration of exemplary approaches. Based on
Petition 870190041027, of 5/2/2019, p. 64/94
58/59 design preferences, it is understood that the specific order or hierarchy of blocks in the processes / flowcharts can be reorganized. In addition, some blocks can be combined or omitted. The claims of the attached method present elements of the various blocks in a sample order, and are not intended to be limited to the specific order or hierarchy presented.
[00138] The previous description is provided to allow anyone skilled in the art to put into practice the various aspects described here. Several changes in these aspects will be readily apparent to those skilled in the art and the generic principles defined here can be applied to other aspects. Thus, the claims are not intended to be limited to the aspects shown here, but the full scope compatible with the language claims must be agreed, in which the reference to an element in the singular is not intended to mean one and only one unless specifically so mentioned. , but instead one or more. The word exemplary is used here to mean serving as an example, instance or illustration. Any aspect described here as exemplary should not necessarily be interpreted as preferred or advantageous in relation to
other aspects. Unless specifically mentioned in another way, O term some ¹  refers to one or ma is. Combinations how fur any less one between A, B or C, one or more than A, B or Ç, at least one of A, B and C, one or more than A, B e C, and A, B, C or any combination From
they include any combination of A, B, and / or C and can include multiples of A, multiples of B, or multiples of C.
Petition 870190041027, of 5/2/2019, p. 65/94
59/59
Specifically, combinations such as at least one from A, B or C, one or more from A, B or C, at least one from A, Be C, one or more from A, Be C and A, B, C or any combination of them can be A only, B only, C only, A and B, A and C, B and C or A and B and C, where any such combinations may contain one or more members or members of A, B or C. All structural and functional equivalents for the elements of the various aspects described throughout this disclosure that are known or later become known to those of ordinary skill in the art are expressly incorporated herein 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 mentioned in the claims. The words module, mechanism, element, device and the like may not be a substitute for the word medium. As such, no element of claim should be construed as a means or function unless the element is expressly mentioned using the phrase means to.

权利要求:
Claims (28)
[1]
1. Wireless communication method, the method comprising:
determining a demodulation reference signal sequence (DMRS) based on a parent sequence;
map the DMRS sequence to at least one symbol from a set of resource blocks (RBs) in a transmission; and sending a DMRS including the DMRS sequence mapped to at least one symbol in the set of RBs.
[2]
2. Method according to claim 1, wherein the DMRS sequence is mapped to subcarriers in a first symbol in a comb structure.
[3]
3. Method according to claim 2, in which the DMRS sequence is mapped to a first set of subcarriers in a comb structure to a DMRS downlink and in which the DMRS sequence is mapped to a different set of subcarriers in a structure comb for an uplink DMRS.
[4]
4. Method according to claim 2, in which the DMRS sequence is mapped to a first set of subcarriers in a comb structure in an uplink DMRS for single carrier frequency division multiplexing (SC-FDM) and in which the DMRS sequence is mapped to a different set of subcarriers in a comb structure in an uplink DMRS for orthogonal frequency division multiplexing (OFDM).
[5]
5. Method according to claim 1, in which the DMRS sequence is based on a first displacement of the parent sequence to a downlink DMRS and in which the sequence
Petition 870190041027, of 5/2/2019, p. 67/94
2/6
DMRS is based on a second displacement of the parent sequence for an uplink DMRS, where the second displacement is equivalent to the first displacement or the second displacement is different from the first displacement.
[6]
6. Method according to claim 1, in which the DMRS sequence is based on a segment of the parent sequence, and in which the segment is based on the allocated RBs.
[7]
A method according to claim 1, wherein determining the DMRS sequence based on the mother sequence comprises:
dividing the mother sequence into a plurality of first segments;
cutting out each first segment of the plurality of first segments based on a first threshold; and filtering each first segment of the plurality of first segments after cutting to form each second seed of a plurality of second segments.
[8]
A method according to claim 7, wherein determining the DMRS sequence based on the mother sequence further comprises:
cut each second segment based on a second threshold; and filter each second segment after clipping each second segment.
[9]
A method according to claim 7, wherein a peak-to-average energy ratio (PAPR) associated with each first segment is equal to or less than a PAPR threshold.
[10]
10. Method according to claim 1, wherein at least one symbol of the set of RBs is a first
Petition 870190041027, of 5/2/2019, p. 68/94
3/6 transmission symbol.
[11]
11. The method of claim 1, wherein the transmission is one of an uplink transmission or a downlink transmission.
[12]
12. Method for wireless communication by a user equipment (UE), the method comprising:
receive information associated with resource allocation;
determine a granularity based on the information associated with the resource allocation;
determine resource allocation based at least in part on granularity; and receive a signal loaded in resources corresponding to the resource allocation.
[13]
13. Method according to claim 12, in which the granularity is proportional to a number of resource blocks (RBs) allocated to the UE by the resource allocation.
[14]
14. The method of claim 12, wherein the information associated with the resource allocation includes one or more of a starting resource block (RB), a number of RBs or a granularity index.
[15]
15. The method of claim 12, wherein the granularity corresponds to a number of resource blocks (RBs).
[16]
16. The method of claim 15, wherein the number of RBs is one, two, four or eight.
[17]
17. The method of claim 12, further comprising:
receive at least one of an allocation size indication or a granularity associated with a
Petition 870190041027, of 5/2/2019, p. 69/94
4/6 neighboring cell for the estimation of blind interference associated with mixed interference.
[18]
18. Apparatus for wireless communication, the apparatus comprising:
a memory; and at least one processor attached to the memory and configured to:
determining a demodulation reference signal sequence (DMRS) based on a parent sequence;
map the DMRS sequence to at least one symbol from a set of resource blocks (RBs) in a transmission; and sending a DMRS including the DMRS sequence mapped to at least one symbol in the set of RBs.
[19]
19. Apparatus according to claim 18, in which the DMRS sequence is mapped to subcarriers in a first symbol on a comb structure.
[20]
20. Apparatus according to claim 19, in which the DMRS sequence is mapped to a first set of subcarriers in a comb structure for a downlink DMRS and in which the DMRS sequence is mapped to a different set of subcarriers in a structure comb for an uplink DMRS.
[21]
21. Apparatus according to claim 19, in which the DMRS sequence is mapped to a first set of subcarriers in a comb structure in an uplink DMRS for single carrier frequency division multiplexing (SC-FDM) and in which the DMRS sequence is mapped to a different set of subcarriers in a comb structure in an uplink DMRS for multiplexing by
Petition 870190041027, of 5/2/2019, p. 70/94
5/6 orthogonal frequency division (OFDM).
[22]
22. Apparatus according to claim 18, wherein the DMRS sequence is based on a first displacement of the parent sequence to a downlink DMRS and the DMRS sequence is based on a second displacement of the mother sequence to an uplink DMRS, in that the second offset is equivalent to the first offset or the second offset is different from the first offset.
23. Apparatus, a deal with The claim 18, where the DMRS string is based in a segment gives sequence mother, and in what the segment if : based on RBs allocated.24. Apparatus, a deal with The claim 18, on what determining the sequence DMRS based at sequence mother understands:
dividing the mother sequence into a plurality of first segments;
cutting out each first segment of the plurality of first segments based on a first threshold; and filtering each first segment of the plurality of first segments after cutting to form each second seed of a plurality of second segments.
[23]
25. User equipment (EU), comprising:
a memory; and at least one processor attached to the memory and configured to:
receive information associated with resource allocation;
determine a granularity based on the information associated with the resource allocation;
Petition 870190041027, of 5/2/2019, p. 71/94
6/6 determine resource allocation based at least in part on granularity; and receive a signal loaded into the resources corresponding to the resource allocation.
[24]
26. UE, according to claim 25, wherein the granularity is proportional to a number of resource blocks (RBs) allocated to the UE by the resource allocation.
[25]
27. UE, according to claim 25, wherein the information associated with the resource allocation includes one or more of a starting resource block (RB), a number of RBs or a granularity index.
[26]
28. EU according to claim
25, where the granularity corresponds to a number of resource blocks (RBs).
[27]
29. UE according to claim 28, wherein the number of RBs is one, two, four or eight.
[28]
30. UE according to claim 25, wherein at least one processor is additionally configured to:
receive at least one of an allocation size indication or a granularity associated with a neighboring cell for the estimation of blind interference associated with mixed interference.

类似技术:

---

公开号 | 公开日 | 专利标题

---

US11115175B2|2021-09-07|Narrowband time-division duplex frame structure for narrowband communications

---

US11012283B2|2021-05-18|Single carrier waveform data transmission and reception based on configurable DFT window

---

US10701723B2|2020-06-30|Demodulation reference signal with low peak-to-average power ratio and allocation information with granularity

---

US10897326B2|2021-01-19|Sharing a single coreset bandwidth across multiple user equipments

---

BR112020006610A2|2020-10-06|methods and apparatus for device-to-device feedback

---

US10511987B2|2019-12-17|Methods and apparatus related to enhanced machine type communication

---

US20190349176A1|2019-11-14|System and method for self-contained subslot bundling

---

BR112019014173A2|2020-02-11|REFERENCE SIGNAL PLACEMENT IN DIFFERENT SUB-BANDS OF THE SAME OFDM SYMBOL

---

WO2018067240A1|2018-04-12|Signaling to indicate whether physical broadcast channel repetition is enabled in a target cell

---

US11177923B2|2021-11-16|User equipment identifier information

同族专利:

---

公开号 | 公开日

---

KR102174874B1|2020-11-05|

---

US10701723B2|2020-06-30|

---

CN109923818A|2019-06-21|

---

EP3535899A1|2019-09-11|

---

JP2020503712A|2020-01-30|

---

CN109906580B|2021-07-20|

---

US20180132269A1|2018-05-10|

---

WO2018084920A1|2018-05-11|

---

JP6798018B2|2020-12-09|

---

EP3535900A1|2019-09-11|

---

WO2018084934A1|2018-05-11|

---

US20180131485A1|2018-05-10|

---

CN109906580A|2019-06-18|

---

KR20190074283A|2019-06-27|

---

CN109923818B|2021-10-26|

引用文献:

---

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

---

---

US7924809B2|2006-11-22|2011-04-12|Intel Corporation|Techniques to provide a channel quality indicator|

---

US9031052B2|2008-07-14|2015-05-12|Lg Electronics Inc.|Uplink transmission control method in system supporting an uplink multiple access transmission mode|

---

KR101179627B1|2008-12-22|2012-09-04|한국전자통신연구원|Method And Apparatus For Allocating Demodulation Reference Signal|

---

WO2011034358A2|2009-09-16|2011-03-24|엘지전자 주식회사|Method and apparatus for transmitting a reference signal in a multi-antenna system|

---

US9137076B2|2009-10-30|2015-09-15|Qualcomm Incorporated|Method and apparatus for mutiplexing reference signal and data in a wireless communication system|

---

KR101521001B1|2010-01-08|2015-05-15|인터디지탈 패튼 홀딩스, 인크|Channel state information transmission for multiple carriers|

---

WO2011152659A2|2010-06-01|2011-12-08|엘지전자 주식회사|Method for transmitting control information in wireless communication system, and apparatus for same|

---

KR101227520B1|2010-07-09|2013-01-31|엘지전자 주식회사|Method for transmitting uplink reference signal in multiple antenna wireless communication system and apparatus therefor|

---

CN102231719B|2011-05-27|2014-01-22|上海华为技术有限公司|Wireless system sending signal wave clipping device, transmitter, base station and wave chipping method|

---

US9337984B2|2011-08-19|2016-05-10|Lg Electronics Inc.|Method for transmitting uplink control information, user equipment, method for receiving uplink control information, and base station|

---

KR102087962B1|2011-09-27|2020-03-13|삼성전자주식회사|A method and apparatus for transmission power control of soucindg reference signals|

---

US20130343477A9|2011-11-04|2013-12-26|Research In Motion Limited|PUSCH Reference Signal Design for High Doppler Frequency|

---

WO2014096909A1|2012-12-21|2014-06-26|Nokia Corporation|Grouping of cs and comb values for dm-rs and srs on shared time-frequency resources|

---

JP5947240B2|2013-03-28|2016-07-06|パナソニック インテレクチュアル プロパティ コーポレーション オブ アメリカＰａｎａｓｏｎｉｃ Ｉｎｔｅｌｌｅｃｔｕａｌ Ｐｒｏｐｅｒｔｙ Ｃｏｒｐｏｒａｔｉｏｎ ｏｆ Ａｍｅｒｉｃａ|Transmitting apparatus and transmitting method|

---

WO2014161142A1|2013-04-01|2014-10-09|Panasonic Intellectual Property Corporation Of America|Terminal, base station, method of generating dmrs, and transmission method|

---

WO2014168574A1|2013-04-12|2014-10-16|Telefonaktiebolaget L M Ericsson |Demodulation reference signal format selection|

---

EP2999282B1|2013-06-17|2017-10-11|Huawei Technologies Co., Ltd.|Uplink control information transmission method, user equipment and base station|

---

KR102040624B1|2014-08-07|2019-11-27|엘지전자 주식회사|Method and user equipment for receiving discovery signal, and method and base station for transmitting discovery signal|

---

US9673948B2|2014-10-29|2017-06-06|Qualcomm Incorporated|Hybrid pilot design for low latency communication|

---

WO2016089184A1|2014-12-05|2016-06-09|Lg Electronics Inc.|Method and apparatus for supporting variable transport block size without associated downlink control information in wireless communication system|

---

EP3236610B1|2014-12-17|2021-04-28|LG Electronics Inc.|Method for transmitting uplink channel and wireless device requiring coverage enhancement|

---

US9781712B2|2015-03-17|2017-10-03|Motorola Mobility Llc|Method and apparatus for scheduling user equipment uplink transmissions on an unlicensed carrier|

---

US10637701B2|2015-06-04|2020-04-28|Electronics And Telecommunications Research Institute|Method and apparatus for transmitting physical uplink control channel|

---

CN112994865A|2015-07-30|2021-06-18|苹果公司|OFDMA-based multiplexing of uplink control information|

---

US20180132269A1|2016-11-04|2018-05-10|Qualcomm Incorporated|System and method for mapping uplink control information|WO2016192082A1|2015-06-04|2016-12-08|华为技术有限公司|Method, device, and system for information transmission|

---

US20180132269A1|2016-11-04|2018-05-10|Qualcomm Incorporated|System and method for mapping uplink control information|

---

US10893512B2|2017-01-16|2021-01-12|Mediatek Inc.|Resource elementallocation for uplink control informationon physical uplink shared channel |

---

CN110235396A|2017-02-05|2019-09-13|Lg 电子株式会社|The equipment that terminals in wireless communication systems sends the method for uplink control information and supports this method|

---

KR20180108035A|2017-03-23|2018-10-04|삼성전자주식회사|Apparatus and method for transmitting and receiving of data in a wireless communication system|

---

EP3619882A2|2017-05-04|2020-03-11|Intel IP Corporation|New radiophysical uplink structures and schemes|

---

US10674517B2|2017-05-16|2020-06-02|Samsung Electronics Co., Ltd.|Method and apparatus for using resource information in wireless communication system|

---

KR20190131381A|2018-05-16|2019-11-26|삼성전자주식회사|Method and apparatus for configuration of demodulation reference siganl information in vehicle-to-everything system|

---

US10616801B1|2018-06-04|2020-04-07|Sprint Spectrum L.P.|Systems and methods for dynamic inter band carrier aggregation|

---

AU2019296665A1|2018-06-26|2021-02-04|Guangdong Oppo Mobile Telecommunications Corp., Ltd.|Uplink signal transmission method, terminal device, and network device|

---

US11082279B2|2018-09-27|2021-08-03|At&T Intellectual Property I, L.P.|Facilitation of reduction of peak to average power ratio for 5G or other next generation network|

---

US10659270B2|2018-10-10|2020-05-19|At&T Intellectual Property I, L.P.|Mapping reference signals in wireless communication systems to avoid repetition|

---

US20200228299A1|2019-01-11|2020-07-16|Mediatek Inc.|Ue multiplexing for dmrs transmission|

---

WO2022011707A1|2020-07-17|2022-01-20|Nec Corporation|Methods for communications, terminal device, network device and computer readable media|

法律状态:
2021-10-05| B350| Update of information on the portal [chapter 15.35 patent gazette]|

优先权:

---

申请号 | 申请日 | 专利标题

---

US201662418079P| true| 2016-11-04|2016-11-04|

---

US15/699,687|US10701723B2|2016-11-04|2017-09-08|Demodulation reference signal with low peak-to-average power ratio and allocation information with granularity|

---

PCT/US2017/050955|WO2018084934A1|2016-11-04|2017-09-11|Demodulation reference signal with low peak-to-average power ratio and allocation information with granularity|

---