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公开(公告)号：US20210136740A1
公开(公告)日：2021-05-06
申请号：US16671409
申请日：2019-11-01
IPC分类号： H04W72/04
摘要： Methods, systems, and devices for wireless communications are described. The described techniques relate to improved methods, systems, devices, and apparatuses that support chained sidelink transmissions. A transmitting user equipment (UE) may send, to a receiving UE, sidelink control information (SCI) that reserves resources for transmission from the transmitting UE as well as reserves resources for a response transmission from the receiving UE. The receiving UE may respond with a transmission using the resources that were reserved in the SCI and without sending its own SCI to reserve resources for the response. The latency between the transmitting UE sending the first transmission and receiving a response from the receiving UE may be reduced, because the transmitting UE reserved the resources for itself and the receiving UE with the same SCI.
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公开(公告)号：US20210058968A1
公开(公告)日：2021-02-25
申请号：US16995644
申请日：2020-08-17
摘要： Methods, systems, and devices for wireless communications are described. A base station may identify a listen-before-talk (LBT) procedure to use for transmitting a downlink signal to a user equipment (UE) on a shared radio frequency spectrum band. The LBT procedure may be a group LBT procedure associated with a first set of contention window durations or an individual listen-before talk procedure associated with a second set of contention window durations. The base station may determine a contention window duration corresponding to the identified LBT procedure, perform the identified LBT procedure using the determined contention window duration, and transmit the downlink signal to the UE based on the performed LBT procedure.
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公开(公告)号：US20210044397A1
公开(公告)日：2021-02-11
申请号：US16934882
申请日：2020-07-21
发明人： Mostafa Khoshnevisan , Xiaoxia Zhang , Tao Luo , Jing Sun , Arumugam Chendamarai Kannan , Sungwoo Park , Yisheng Xue
摘要： In one aspect, a method includes determining a first SSB burst set information corresponding to a first PCI; determining a second SSB burst set information corresponding to a second PCI, the second PCI different from the first PCI; and monitoring at least a first SSB from the first SSB burst set and at least a second SSB from the second SSB burst set. In another aspect, a method includes determining a number of RSRP reports to send based a CSI report request; transmitting a first RSRP report for a first beam of a plurality of beams, the first beam associated with a first group of beams of a plurality of groups; and transmitting a second RSRP report for a second beam of the plurality of beams, the second beam associated with a second group of beams of the plurality of groups.
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公开(公告)号：US20210014898A1
公开(公告)日：2021-01-14
申请号：US16803888
申请日：2020-02-27
发明人： Jing Lei , Wanshi Chen , Joseph Binamira Soriaga , Krishna Kiran Mukkavilli , Enoch Shiao-Kuang Lu , Seyong Park , Yisheng Xue
IPC分类号： H04W74/08 , H04W74/00 , H04W72/04 , H04W72/12 , H04L5/10 , H04L5/00 , H04W76/27 , H04W56/00 , H04L1/18 , H04L1/00
摘要： Methods, systems, and devices for wireless communications are described. A user equipment (UE) may generate an uplink random access message, including a random access preamble and an uplink shared channel resource unit, of a two-step random access procedure. The UE may identify configuration information for uplink control information (UCI) multiplexing. The UE may identify a trigger for inclusion of UCI with the uplink random access message. The UE may multiplex the UCI and a reference signal with the uplink shared channel resource unit and map the uplink control information to resource elements in the uplink shared channel resource unit based on a priority of the uplink control information and a location of resource elements to which the reference signal is mapped. The UE may transmit the uplink random access message comprising the uplink control information and an indication of the used UCI configuration to the base station.
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公开(公告)号：US20200029221A1
公开(公告)日：2020-01-23
申请号：US16513283
申请日：2019-07-16
发明人： Yisheng Xue , Aleksandar Damnjanovic , Tamer Kadous , Xiaoxia Zhang , Jing Sun , Yongbin Wei
摘要： Methods, systems, and devices for wireless communications are described. A base station of a first network operator (OP) may determine a priority for the first OP for a transmission opportunity of a shared or unlicensed channel. The priority may be lower than a priority of a second OP for the transmission opportunity. Base station may transmit a tentative grant to a user equipment (UE) of the first OP scheduling transmissions over resources of the transmission opportunity. The transmitting device of the first OP may monitor a contention window for reservation signals communicated by devices of the second OP. Based on the monitoring and the tentative grant, the transmitting device of the first OP may perform the transmission over the resources of the shared or unlicensed channel.
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公开(公告)号：US10327178B2
公开(公告)日：2019-06-18
申请号：US15804706
申请日：2017-11-06
发明人： Aleksandar Damnjanovic , Juan Montojo , Yisheng Xue , Ahmed Sadek
摘要： The present disclosure provides for fast radio resource management procedures for new radio. Generally, a fixed frame structure is utilized and all base stations are synchronized. A base station may transmit a reservation request during a first control slot for the base station in a reservation channel at a beginning of a synchronized frame. A first user equipment may transmit and the base station may receive a reservation response during a second control slot. The base station may receive, from the first UE, after a third control slot of the reservation channel for a neighboring base station, a reservation indication based on a measurement by the first UE of the neighboring base station or at least one other UE associated with the neighboring base station. The base station may determine, based on the resource indication, whether to schedule the first UE during a data channel of the synchronized frame.
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公开(公告)号：US20180343588A1
公开(公告)日：2018-11-29
申请号：US15985048
申请日：2018-05-21
发明人： Ahmed Kamel Sadek , Yisheng Xue , Siddhartha Mallik , Tamer Kadous , Xiaoxia Zhang , Taesang Yoo , Michael Mingxi Fan , Aleksandar Damnjanovic , Yongbin Wei , Jing Sun
CPC分类号： H04W28/26 , H04B7/0626 , H04B7/063 , H04B17/336 , H04L5/0035 , H04L5/0048 , H04L5/0051 , H04L5/006 , H04L5/14 , H04L27/0014 , H04W16/14 , H04W52/241 , H04W74/0833 , H04W84/045
摘要： A medium reservation framework is disclosed for coexistence of coordinated and uncoordinated wireless networks in licensed spectrum and shared spectrum. The proposed medium reservation framework organically takes into account operating regimes with different numbers of Tx/Rx antennas per node, provides flexibility in trading off medium contention aggressiveness and power saving, leverages the inherent synchronization nature of NR, and covers both coordinated and uncoordinated operation scenarios. Various aspects of the medium reservation framework may be centered on one or more combinations of some basic building blocks, such as an operation grid, synchronization signals, and reservation messages, such as a reservation request signal (RRQ) and one or more a reservation response signals (RRS).
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68.发明申请公开(公告)号：US20170339690A1
公开(公告)日：2017-11-23
申请号：US15592981
申请日：2017-05-11
发明人： Aleksandar Damnjanovic , Yisheng Xue , Juan Montojo , Jing Sun , Yongbin Wei , Shimman Arvind Patel
IPC分类号： H04W72/04 , H04B17/336 , H04W72/12
CPC分类号： H04W72/0413 , H04B17/336 , H04L1/0026 , H04L1/1671 , H04L1/1854 , H04W72/042 , H04W72/1268
摘要： Techniques are described for wireless communication at a user equipment (UE). One method includes receiving a downlink grant for a downlink transmission; transmitting channel quality feedback at a first time triggered by receipt of the downlink grant, the first time occurring during a first transmission time interval (TTI); and transmitting acknowledgement/negative-acknowledgement (ACK/NACK) feedback for the downlink transmission at a second time triggered by receipt of the downlink grant, the second time occurring during a second TTI, and the second TTI occurring later in time than the first TTI.
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69.发明申请公开(公告)号：US20160182273A1
公开(公告)日：2016-06-23
申请号：US14910569
申请日：2013-09-10
发明人： Jian Li , Fuyun Ling , Changlong Xu , Yin Huang , Yisheng Xue , Jilei Hou
CPC分类号： H04L27/38 , H04L1/0047 , H04L1/0054 , H04L1/0058 , H04L5/12 , H04L25/03178 , H04L25/067
摘要： A method and apparatus for demapping a double squared quadrature amplitude modulated (DSQ) symbol is disclosed. One or more first log likelihood ratios (LLRs) are determined, for a first subset of constellation points of a corresponding DSQ constellation, using an LLR approximation. One or more second LLRs are determined, for a second subset of constellation points of the DSQ constellation, using a lookup table. The DSQ symbol is then demapped to one of a plurality of constellation points of the DSQ constellation based on the first and second LLRs. For some embodiments, the first subset of constellation points may correspond with an inner region of the DSQ constellation and the second subset of constellation points may correspond with an outer region of the DSQ constellation.
摘要翻译： 公开了一种用于解映射双正交幅度调制（DSQ）符号的方法和装置。 对于对应DSQ星座的星座点的第一子集，使用LLR近似来确定一个或多个第一对数似然比（LLR）。 对于DSQ星座的星座点的第二子集，使用查找表来确定一个或多个第二LLR。 然后，基于第一和第二LLR，DSQ符号被映射到DSQ星座的多个星座点中的一个。 对于一些实施例，星座点的第一子集可以对应于DSQ星座的内部区域，并且星座点的第二子集可以对应于DSQ星座图的外部区域。
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公开(公告)号：US09363110B2
公开(公告)日：2016-06-07
申请号：US14646360
申请日：2013-01-08
发明人： Haitao Zhang , Yin Huang , Jian Li , Yisheng Xue
CPC分类号： H04L25/0212 , H04B10/60 , H04L1/0054 , H04L25/03057
摘要： A receiver is disclosed that includes a slicer having an input to receive a sequence of symbols exhibiting inter-symbol-interference (ISI). The slicer determines a state associated with each symbol based on a threshold. A feedback equalization unit is coupled to the slicer to apply equalization to the symbol fed to the slicer input based on prior detected symbol states. A Least-Mean-Square (LMS) unit cooperates with the slicer and feedback equalization unit to estimate a channel impulse response based on the equalized symbols. The LMS unit feeds the estimated channel impulse response to a Maximum-Likelihood-Sequence-Estimation (MLSE) unit to generate an estimated sequence of bits based on the estimated channel impulse response.
摘要翻译： 公开了一种接收器，其包括具有用于接收呈现符号间干扰（ISI）的符号序列的输入的限幅器。 限幅器基于阈值确定与每个符号相关联的状态。 反馈均衡单元耦合到限幅器，以基于先前检测的符号状态对馈送到限幅器输入的符号施加均衡。 最小均方（LMS）单元与限幅器和反馈均衡单元协作以基于均衡符号来估计信道脉冲响应。 LMS单元将估计的信道脉冲响应馈送到最大似然序列估计（MLSE）单元，以基于所估计的信道脉冲响应来产生估计的比特序列。
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