-
1.发明公开公开(公告)号：US20240243840A1
公开(公告)日：2024-07-18
申请号：US18563020
申请日：2021-07-07
Applicant: QUALCOMM Incorporated
Inventor： Liangming WU , Wei LIU , Kexin XIAO , Changlong XU , Ori SHENTAL , Thomas Joseph RICHARDSON , Hao XU
IPC: H04L1/00
CPC classification number: H04L1/0042 , H04L1/0003
Abstract: In a probabilistic amplitude shaping (PAS) system, a distribution matching (DM) component may receive a uniform bit sequence with equal probabilities, which may be converted into symbols with a desired probability distribution (e.g., Gaussian). For example, the probability distribution may use inner constellation points associated with a lower energy and/or power more frequently and outer constellation points associated with a higher energy and/or power less frequently. In general, the DM component may map binary bits to positive amplitudes with a non-uniform distribution according to a DM rate that is based at least in part on a signal-to-noise ratio (SNR), which may vary significantly in a spatial and frequency selective wireless channel. Accordingly, some aspects described herein relate to configuring DM parameters and codeword and resource mappings in a spatial and frequency selective wireless channel.
-
2.发明公开公开(公告)号：US20240214256A1
公开(公告)日：2024-06-27
申请号：US18557037
申请日：2021-06-16
Applicant: QUALCOMM Incorporated
Inventor： Liangming WU , Kexin XIAO , Changlong XU , Wei LIU , Hao XU , Thomas Joseph RICHARDSON , Ori SHENTAL
CPC classification number: H04L27/362 , H04L1/0058 , H04L27/3411
Abstract: Methods, systems, and devices for wireless communications are described. A transmitting device may perform distribution matching on at least a first subset of a set of bits, such as the bits of transport block. The distribution matching may include a variable-to-fixed (v2f) distribution matching procedure in which a ratio between a quantity of input bits to output interim symbols for the v2f distribution matching procedure is variable. The distribution matching include evaluating, after each instance of the v2f distribution matching procedure, whether additional bits remain for distribution matching, and if so, whether to perform an additional instance of the v2f distribution matching procedure or an alternative distribution matching procedure on the remaining bits. Corresponding techniques for a receiving device are also described, including distribution dematching techniques based on a v2f distribution dematching procedure.
-
公开(公告)号：US20240097817A1
公开(公告)日：2024-03-21
申请号：US18261982
申请日：2021-03-18
Applicant: QUALCOMM INCORPORATED
Inventor： Wei LIU , Thomas Joseph RICHARDSON , Liangming WU , Changlong XU , Ori SHENTAL , Hao XU
CPC classification number: H04L1/0041 , H03M13/1148 , H03M13/6362 , H04L1/0045 , H04L1/0057 , H04L1/0068
Abstract: Methods, systems, and devices for wireless communication are described to support replacing values of one or more information bit vectors with one or more corresponding sets of parity bits. A first wireless device may replace an information bit vector with a parity bit vector, using a set of information bits of the information bit vector and based on a parity check matrix, which may result in generating the set of information bits at an information bit vector corresponding to a parity bit column of the parity check matrix, during encoding. The first wireless device may perform a transmission to a second wireless device, which may receive the transmission, decode the set of information bits to the information bit vector corresponding to the parity bit column. The second wireless device may replace other bit estimates of a vector corresponding to an information bit column with the set of information bits.
-
公开(公告)号：US20240048287A1
公开(公告)日：2024-02-08
申请号：US18256042
申请日：2021-02-10
Applicant: QUALCOMM Incorporated
Inventor： Kangqi LIU , Ruiming ZHENG , Changlong XU , Liangming WU , Kexin XIAO , Jian LI , Hao XU , Wei LIU
IPC: H04L1/1829
CPC classification number: H04L1/1832 , H04L1/1848
Abstract: Apparatus, methods, and computer-readable media for network coding for dual connectivity are disclosed herein. A base station (BS) sends encoded symbols from a first network coding layer to a first radio link control (RLC) layer and transmits, to a user equipment (UE), encoded data comprising the encoded symbols. The BS also transmits encoded data to a road side unit (RSU) for passing to the UE as a split transmission. The UE can receive encoded packets from the BS and RSU at a network coding layer via a second RLC layer. The UE recovers source packets from the encoded packets with a rateless network code at the network coding layer. The UE sequences the source packets into an ordered set of source packets at the network coding layer and sends the ordered set of source packets from the network coding layer to a packet data convergence protocol layer for processing.
-
公开(公告)号：US20250038881A1
公开(公告)日：2025-01-30
申请号：US18715918
申请日：2022-02-25
Applicant: QUALCOMM Incorporated
Inventor： Jian LI , Changlong XU , Kangqi LIU , Liangming WU , Kexin XIAO , Wei LIU , Ruiming ZHENG , Hao XU
Abstract: Methods, systems, and devices for wireless communications are described. A receiving device may receive an encoded signal including a set of information blocks. Each information block may include a set of encoded information bits and a set of cyclic redundancy check (CRC) bits. The receiving device may perform a staircase decoding procedure to decode the set of encoded information bits of a selected information block that is part of a subset of the set of information blocks that is within a sliding window. The staircase decoding procedure may include one or more iterations of a decoding process applied to the subset of the set of information blocks. The receiving device may perform, inbetween iterations of the staircase decoding procedure applied to the subset of the set of information blocks within the sliding window, a CRC procedure based on the set of CRC bits in the set of information blocks.
-
Patent Agency Ranking
公开(公告)号：US20240106565A1
公开(公告)日：2024-03-28
申请号：US18256043
申请日：2021-02-10
Applicant: QUALCOMM Incorporated
Inventor： Kangqi LIU , Ruiming ZHENG , Changlong XU , Liangming WU , Kexin XIAO , Jian LI , Hao XU , Wei LIU
CPC classification number: H04L1/0009 , H04L1/0075 , H04W4/44 , H04W36/08
Abstract: Apparatus, methods, and computer-readable media for network coding for handover are disclosed herein. A base station (BS) transmits a first group of encoded packets to a first road side unit (RSU) over a first radio access network (RAN) interface. The BS initiates a handover procedure between the first RSU and a second RSU. The BS receives, from the first RSU, a release acknowledgment associated with the handover procedure and feedback associated with the first group of encoded packets. The BS transmits network coding level information to the second RSU over a second RAN interface based on the feedback. The network coding level information indicates a number of missing encoded packets within the first group of encoded packets for the second RSU to transmit to the UE. The BS transmits, to the UE, a second group of encoded packets associated with the number of missing encoded packets at the second RSU.
-
公开(公告)号：US20240023139A1
公开(公告)日：2024-01-18
申请号：US18256621
申请日：2021-02-02
Applicant: QUALCOMM INCORPORATED
Inventor： Kangqi LIU , Ruiming ZHENG , Changlong XU , Liangming WU , Jian LI , Kexin XIAO , Hao XU , Wei LIU
CPC classification number: H04W72/25 , H04L1/0076 , H04L2001/0097
Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a base station, encoded packets that are encoded using network coding. The encoded packets may be associated with source packets that represent a data set. The UE may attempt to recover the source packets from the encoded packets received from the base station. Upon failing to recover the source packets, the UE may transmit, over a sidelink channel, a message requesting sidelink assistance in recovering the source packets.
-
8.发明公开公开(公告)号：US20240250773A1
公开(公告)日：2024-07-25
申请号：US18684216
申请日：2022-03-02
Applicant: QUALCOMM Incorporated
Inventor： Wei LIU , Thomas Joseph RICHARDSON , Liangming WU , Changlong XU , Ori SHENTAL , Hao XU
CPC classification number: H04L1/0033 , H03M7/40
Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a transmitting node may determine a set of geometry-specific parameters based at least in part on a symbol sequence length n and a target distribution. The transmitting node may determine a sequence of K bits based at least in part on a plurality of information bits and a bit sequence length K. The transmitting node may map, based at least in part on a composition selected from a plurality of compositions, the sequence of K bits to a sequence of n symbols using arithmetic coding based at least in part on the set of geometry-specific parameters. The transmitting node may transmit the sequence of n symbols to a receiving node. Numerous other aspects are described.
-
公开(公告)号：US20240137253A1
公开(公告)日：2024-04-25
申请号：US18546705
申请日：2021-04-27
Applicant: QUALCOMM Incorporated
Inventor： Liangming WU , Kexin XIAO , Thomas Joseph RICHARDSON , Changlong XU , Ori SHENTAL , Kangqi LIU , Wei LIU , Hao XU
CPC classification number: H04L27/0012 , H03M7/4006
Abstract: Wireless communications systems and methods related to an efficient arithmetic coding based multiple composition distribution matcher (MCDM) are provided. A wireless communication device selects, based on a first value representing a sequence of bits, a first composition from a plurality of compositions. Each composition of the plurality of compositions includes a different modulation symbol distribution associated with a modulation scheme. The wireless communication device encodes, based on the first composition, the sequence of bits into a sequence of symbols using arithmetic coding. The wireless communication device transmits a communication signal including the sequence of symbols.
-
公开(公告)号：US20240121035A1
公开(公告)日：2024-04-11
申请号：US18263671
申请日：2021-03-09
Applicant: QUALCOMM INCORPORATED
Inventor： Kexin XIAO , Liangming WU , Changlong XU , Kangqi LIU , Jian LI , Hao XU , Ruiming ZHENG , Wei LIU
IPC: H04L1/1867
CPC classification number: H04L1/189 , H04L1/1874
Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a wireless device may In use non-uniformly distributed bits for amplitude mapping and uniformly distributed bits for sign mapping to support probabilistic constellation shaping (PCS) for transmission of a message. To provide a coding gain with one or more retransmissions of the message, the device may configure redundancy versions based on the non-uniform distribution of one or more symbols. In some examples, the device may include the same set of non-uniformly distributed systematic bits or at least a portion of non-uniformly distributed systematic bits in each redundancy version of the message. Additionally or alternatively, the device may use multiple modulation and coding scheme (MCS) values to modulate one or more of the redundancy versions, where a first MCS value is used to modulate non-uniformly distributed symbols and a second MCS value is used to modulate uniformly distributed symbols.
-
-
-
-
-
-
-
-
-
Search Results
12
records
(took 0.018 seconds)
