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公开(公告)号：US20220095359A1
公开(公告)日：2022-03-24
申请号：US17309875
申请日：2019-12-18
发明人： Chao WEI , Changlong XU , Hao XU
摘要： Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive configuration information that indicates a maximum number of transport blocks permitted to be transmitted in one or more transmission occasions in a transmission period of a configured grant for an uplink (UL) transmission; transmit, based at least in part on a set of transport blocks to be transmitted in the transmission period including fewer transport blocks than the maximum number of transport blocks, an indication to suppress communication of one or more remaining transport blocks of the transmission period other than the set of transport blocks; and perform the UL transmission of the set of transport blocks in the transmission period based at least in part on the configuration information. Numerous other aspects are provided.
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公开(公告)号：US20210288663A1
公开(公告)日：2021-09-16
申请号：US16757794
申请日：2018-11-14
发明人： Liangming WU , Changlong XU , Jing JIANG , Gabi SARKIS , Yu ZHANG , Kai CHEN
摘要： Certain aspects of the present disclosure generally relate to wireless communications and, more particularly, to methods and apparatus for segmenting uplink control information prior for encoding using a polar code prior to transmission. An exemplary method that may be performed by a wireless device generally includes iteratively segmenting a group of K information bits into a plurality of segments, encoding the information bits of each of the plurality of segments using a polar code to generate a plurality of encoded segments, and transmitting the plurality of encoded segments.
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公开(公告)号：US20200259505A1
公开(公告)日：2020-08-13
申请号：US16636499
申请日：2017-08-12
发明人： Changlong XU , Liangming WU , Hao XU
IPC分类号： H03M13/15
摘要： Certain aspects of the present disclosure generally relate to wireless communications and, more particularly, to methods and apparatus for rate-matching a stream of bits encoded using polar codes. An exemplary method generally includes encoding K information bits using a polar code with a mother code length, N, to generate a stream of encoded bits storing a portion of the encoded bits in a circular buffer of size N reordering P blocks of the circular buffer according to row weights of a Hadamard matrix J interlacing the encoded bits of the blocks having a same row weight selecting, based on the row weights, a subset of the encoded bits in the blocks to modify modifying the selected subset of the encoded bits and transmitting the encoded bits in the P blocks, subsequent to modifying the selected subset of the encoded bits, via transmission resources.
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64.发明申请公开(公告)号：US20180287738A1
公开(公告)日：2018-10-04
申请号：US15905243
申请日：2018-02-26
发明人： Changlong XU , Jing JIANG , Yang YANG , Gabi SARKIS
IPC分类号： H04L1/00
CPC分类号： H04L1/0064 , H04L1/0041 , H04L1/0045
摘要： Polar encoding using two or more concatenated cyclic redundancy check (CRC) data values may enhance CRC-aided successive cancellation list decoding in a communication system. A polar encoding method may include determining first CRC data from source data, combining the source data and the first CRC data to form first combined data, determining second CRC data from the first combined data, and combining the source data, the first CRC data, and the second CRC data to form second combined data.
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公开(公告)号：US20150334703A1
公开(公告)日：2015-11-19
申请号：US14582767
申请日：2014-12-24
发明人： Changlong XU , Liang Zhang , Venkata Ramanan Venkatachalam Jayaraman , Ruowei Wang , Rohit Kapoor , Jilei Hou
IPC分类号： H04W72/04 , H04W28/02 , H04L12/825 , H04W24/10
CPC分类号： H04W72/0446 , H04L1/0002 , H04L47/25 , H04W24/10 , H04W28/0252
摘要： Methods, computer-readable medium, and apparatus are described for adjusting uplink communication at a user equipment (UE) during wireless communication. The described aspects include determining uplink communication characteristic information corresponding to an uplink data rate based on one or more measurement values associated with transmissions by a modem on an uplink communication channel. Further, the described aspects include determining an adjusted uplink data rate based at least in part on the uplink communication characteristic information. Additionally, the described aspects include adjusting data transmission rate of an application layer entity based at least in part on the adjusted uplink data rate.
摘要翻译： 描述了用于在无线通信期间在用户设备（UE）处调整上行链路通信的方法，计算机可读介质和装置。 所描述的方面包括基于与上行链路通信信道上的调制解调器的传输相关联的一个或多个测量值来确定与上行链路数据速率相对应的上行链路通信特性信息。 此外，所描述的方面包括至少部分地基于上行链路通信特性信息来确定调整的上行链路数据速率。 另外，所描述的方面包括至少部分地基于经调整的上行链路数据速率来调整应用层实体的数据传输速率。
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公开(公告)号：US20230139912A1
公开(公告)日：2023-05-04
申请号：US17915286
申请日：2020-05-29
发明人： Xiaoxia ZHANG , Jing SUN , Chih-Hao LIU , Yisheng XUE , Changlong XU , Ozcan OZTURK
摘要： Methods, systems, and devices for wireless communications are described. A user equipment (UE) communicating over sidelink in unlicensed spectrum may perform channel congestion control based on channel busy measurements. For example, a UE may perform channel busy measurement over different resource sets to identify congestion levels from different Radio Access Technologies (RATs). The UE may perform a first channel busy measurement on a first resource set where the first resource set contains resources where sidelink UEs are configured to pause transmission and the UE may perform a second channel busy measurement on a second resource set when sidelink UEs and wireless devices of other RATs are free to contend for resources and transmit. The UE may perform third channel busy measurement on a third resource set where the third resource set contains resources with contention-based access success.
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公开(公告)号：US20230127485A1
公开(公告)日：2023-04-27
申请号：US17905916
申请日：2020-04-15
发明人： Jing SUN , Xiaoxia ZHANG , Changlong XU , Chih-Hao LIU , Ozcan OZTURK , Yisheng XUE
摘要： Wireless communications systems and methods related to stand-alone sidelink communication are provided. A first user equipment (UE) determines system parameter information to initiate a sidelink communication. The first UE transmits, in one or more first subbands of a plurality of subbands within a shared radio frequency during a first time period, the system parameter information. The first UE communicates, with a second UE in a second subband of the plurality of subbands during a second time period different from the first time period, sidelink data based on the system parameter information.
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68.发明申请公开(公告)号：US20230125461A1
公开(公告)日：2023-04-27
申请号：US17906905
申请日：2020-04-20
发明人： Changlong XU , Jing SUN , Xiaoxia ZHANG
IPC分类号： H04W72/232 , H04W72/12 , H04W74/08
摘要： Wireless communications systems and methods related frame based equipment (FBE) communications in a wireless communication network are provided. For example, a method of wireless communication performed by a user equipment can include: monitoring, in a search space of a shared radio frequency band, for a downlink communication from a base station operating in a frame based equipment (FBE) mode; receiving, from the base station based on the monitoring, downlink control information (DCI); determining, based on the received DCI, the DCI does not schedule a physical downlink shared channel (PDSCH) communication for the user equipment; and transmitting, to the base station based on the determining, an uplink communication.
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公开(公告)号：US20230085540A1
公开(公告)日：2023-03-16
申请号：US17759841
申请日：2020-03-12
发明人： Changlong XU , Xiaoxia ZHANG , Jing SUN
摘要： Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an uplink grant that schedules a sounding reference signal (SRS) transmission and a physical uplink shared channel (PUSCH) transmission and indicates one or more parameters for determining a cyclic prefix extension. The UE may determine the cyclic prefix extension based at least in part on the one or more parameters. The UE may transmit the SRS transmission with the cyclic prefix extension after performing a listen before talk (LBT) procedure. Numerous other aspects are provided.
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公开(公告)号：US20230080801A1
公开(公告)日：2023-03-16
申请号：US17760437
申请日：2020-02-28
发明人： Changlong XU , Xiaoxia ZHANG , Jing SUN , Tao LUO
IPC分类号： H04W74/08
摘要： Methods, systems, and devices for wireless communications are described. A wireless device such as a UE or a base station may implement one or more listen before talk (LBT) techniques. The wireless device may determine to transmit a communication during a transmission time interval on multiple subbands of a radio frequency spectrum band. The wireless device may identify whether the transmission time interval is during a channel occupancy time for the base station for a first set of subbands of the multiple subbands. The wireless device may perform one or more LBT procedures based on the identification. For example, the wireless device may perform an LBT procedure that is selected for each subband based on identifying that the transmission time interval is during the channel occupancy time for the first set of the subbands. The wireless device may transmit the communication based on a result of the LBT procedures.
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