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公开(公告)号：US11075679B2
公开(公告)日：2021-07-27
申请号：US16305591
申请日：2017-06-22
Applicant: QUALCOMM Incorporated
Inventor： Chao Wei , Wanshi Chen , Peter Gaal , Bo Chen
Abstract: Mapping with CSI-RS resources with a code divisional multiplex (CDM) length of eight is disclosed. Such mapping allows for flexibly configuring the set of resource elements (REs) for mapping based on the available CSI-RS resources.
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公开(公告)号：US11018804B2
公开(公告)日：2021-05-25
申请号：US16467463
申请日：2017-12-07
Applicant: Qualcomm Incorporated
Inventor： Jing Jiang , Gabi Sarkis , Yang Yang , Shrinivas Kudekar , Joseph Binamira Soriaga , Hari Sankar , Changlong Xu , Chao Wei
Abstract: Methods, systems, and devices for encoding and decoding are described. To encode a vector, an encoder allocates information bits of the vector to channel instances of a channel that are separated into groups. The groups may vary in size and allocation of the information bits is based on a base sequence of a given length. During decoding, a decoder assigns different bit types to channels instances by dividing a codeword into a plurality of groups and assigning bit types to channel instances of the plurality of groups using the base sequence.
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公开(公告)号：US10855405B2
公开(公告)日：2020-12-01
申请号：US16336250
申请日：2017-06-22
Applicant: QUALCOMM Incorporated
Inventor： Changlong Xu , Jian Li , Chao Wei , Chong Li , Joseph Binamira Soriaga , Jilei Hou
IPC: H04J11/00 , H04L1/18 , H04L1/00 , H04B17/336 , H03M13/13
Abstract: Various aspects of the disclosure relate to retransmission techniques for communication of information (e.g., for wireless communication). In some aspects, if a device's first transmission including encoded data and parity information (subject to puncture) fails, the device's retransmission (e.g., in response to a NAK) involves transmitting the parity information that was punctured. In some aspects, the coding rate used for encoding the data for the first transmission is selected to meet an error rate (e.g., a block error rate) for the second transmission. The second transmission may also include repetition information that includes the encoded data. The repetition information could also include at least a portion of the encoded parity information.
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公开(公告)号：US10735070B2
公开(公告)日：2020-08-04
申请号：US15544370
申请日：2015-01-19
Applicant: QUALCOMM Incorporated
Inventor： Chao Wei , Wanshi Chen , Peter Gaal , Yu Zhang
IPC: H04B7/06 , H04B7/0456 , H04L5/00 , H04W72/04 , H04W88/02
Abstract: Mechanisms for reduction of channel state information (CSI) feedback overhead are disclosed for full dimensional multiple input, multiple output (FD-MIMO) systems with large dimension antenna ports. In one aspect, rank-dependent CSI antenna port measurements are used in order to limit the number of antenna ports for high rank CSI reporting. Another aspect allows a user equipment (UE) to select subband feedback for aperiodic CSI porting on an uplink shared channel when the UE is to report subband quality and precoding indicators. Another aspect provides for on-demand CSI feedback that dynamically configures CSI feedback parameters. To reduce the signaling overhead, the multiple parameter sets may be pre-configured with different values for dynamic reporting parameters.
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公开(公告)号：US20200099469A1
公开(公告)日：2020-03-26
申请号：US16467463
申请日：2017-12-07
Applicant: Jing JIANG , Gabi SARKIS , Yang YANG , Shrinivas KUDEK , Josph Binamira SORIAGA , Hari SANKAR , Changlong XU , Chao WEI , Shrinivas KUDEKAR , Qualcomm Incorporated
Inventor： Jing Jiang , Gabi Sarkis , Yang Yang , Shrinivas Kudekar , Joseph Binamira Soriaga , Hari Sankar , Changgiong Xu , Chao Wei
IPC: H04L1/00
Abstract: Methods, systems, and devices for encoding and decoding are described. To encode a vector, an encoder allocates information bits of the vector to channel instances of a channel that are separated into groups. The groups may vary in size and allocation of the information bits is based on a base sequence of a given length. During decoding, a decoder assigns different bit types to channels instances by dividing a codeword into a plurality of groups and assigning bit types to channel instances of the plurality of groups using the base sequence.
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Patent Agency Ranking
公开(公告)号：US20200052804A1
公开(公告)日：2020-02-13
申请号：US16491307
申请日：2017-08-11
Applicant: Chenxi HAO , Yu ZHANG , Chao WEI , Qualcomm Incorporated
Inventor： Chenxi Hao , Yu Zhang , Chao Wei
IPC: H04B17/364 , H04B17/24 , H04B17/318 , H04L5/00 , H04B7/06 , H04W72/04
Abstract: The described techniques relate to improved methods, systems, devices, or apparatuses that support communication schemes for small cyclic delay diversity (SCDD) reference signals. A base station may transmit a control message comprising at least one channel state information (CSI) configuration parameter to a user equipment (UE). The UE may identify a time offset between a plurality of virtual antennas of the base station based at least in part on the CSI configuration parameter. The UE may perform measurements of a plurality of CSI reference signals (CSI-RSs) transmitted by the base station and associated with the virtual antennas. The UE may transmit a feedback message based at least in part on the determined time offset and the measurements of the CSI-RSs.
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公开(公告)号：US10404338B2
公开(公告)日：2019-09-03
申请号：US15563357
申请日：2015-06-03
Applicant: QUALCOMM Incorporated
Inventor： Chao Wei , Yu Zhang , Wanshi Chen , Peter Gaal
IPC: H04B7/04 , H04B7/0456 , H04L1/00 , H04B7/06 , H04B7/0452
Abstract: Enhanced channel state information (CSI) procedures for full dimension-multiple input, multiple output (FD-MIMO) is discussed in which a number of CSI reference signal (CSI-RS) ports configured for a user equipment (UE) is determined. In response to the CSI-RS ports including both horizontal and vertical ports, the UE may determine a first precoding matrix from a plurality of precoding matrices constructed by a Kronecker product of a horizontal precoding matrix and a vertical precoding matrix. The UE selects a predetermined number of precoding vectors out of the first precoding matrix and generates a wideband precoding matrix, based on the selected predetermined number of precoding vectors. The UE reports one or more CSI reports, wherein the CSI re-ports includes at least one precoding matrix indicator (PMI) for the first precoding matrix and at least an indication of the selection of the predetermined number of precoding vectors.
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公开(公告)号：US10291359B2
公开(公告)日：2019-05-14
申请号：US15643003
申请日：2017-07-06
Applicant: QUALCOMM Incorporated
Inventor： Changlong Xu , Jian Li , Chao Wei , Jilei Hou
Abstract: Certain aspects of the present disclosure relate to techniques and apparatus for design of hybrid automatic repeat request (HARQ) feedback bits. The method generally includes obtaining a payload to be transmitted, partitioning the payload into a plurality of blocks, and partitioning each block of the plurality of blocks into a plurality of sections. The method also includes deriving redundancy check information for each section of the plurality of sections, and generating a plurality of codewords, each comprising a block of the plurality of blocks and the redundancy check information for each section of the block, wherein a location of each of the sections in the codewords is determined based on an error rate corresponding to each of the sections.
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公开(公告)号：US09800393B2
公开(公告)日：2017-10-24
申请号：US15106739
申请日：2015-01-07
Applicant: QUALCOMM Incorporated
Inventor： Chao Wei , Peng Cheng , Wanshi Chen , Neng Wang , Peter Gaal , Hao Xu , Jilei Hou
CPC classification number: H04L5/14 , H04B7/0626 , H04B17/345 , H04J11/005 , H04L1/0026 , H04L1/0027 , H04L1/1867 , H04L5/0057 , H04L5/1469 , H04W24/10 , H04W72/0446
Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus determines a location of a reference subframe based on an A-CSI report uplink subframe, an A-CSI request downlink subframe, a reference delay, and a report delay. In an aspect, the reference delay is a first delay value before the A-CSI report uplink subframe, and the report delay is a second delay value between the A-CSI request downlink subframe and the A-CSI report uplink subframe. The apparatus determines a type of the reference subframe based on the location of the reference subframe and a subframe configuration, the type of the reference subframe being a flexible subframe or a fixed subframe. The apparatus measures at least one of a channel or interference based on the reference subframe and the type of the reference subframe. The apparatus sends, at the A-CSI report uplink subframe, an A-CSI report based on the at least one of the channel or the interference.
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90.发明申请公开(公告)号：US20160277081A1
公开(公告)日：2016-09-22
申请号：US15029498
申请日：2013-10-18
Applicant: QUALCOMM INCORPORATED
Abstract: In an aspect, a method of wireless communication includes transmitting first reference signals from a base station using a first set of antenna ports, and receiving first feedback information at the base station from a user equipment (UE). The first feedback information may be associated with the first reference signals. The method includes configuring a first precoder based on the first feedback information, and transmitting second reference signals to the UE based on the configuration of the first precoder. The method includes receiving second feedback information at the base station from the UE. The second feedback information may be associated with the second reference signals. The method includes configuring a second precoder based on the second feedback information.
Abstract translation: 一方面，一种无线通信方法包括使用第一组天线端口从基站发送第一参考信号，以及从用户设备（UE）在基站接收第一反馈信息。 第一反馈信息可以与第一参考信号相关联。 该方法包括基于第一反馈信息配置第一预编码器，并且基于第一预编码器的配置将第二参考信号发送给UE。 该方法包括在UE从基站接收第二反馈信息。 第二反馈信息可以与第二参考信号相关联。 该方法包括基于第二反馈信息配置第二预编码器。
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