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公开(公告)号：US11445499B2
公开(公告)日：2022-09-13
申请号：US16712794
申请日：2019-12-12
发明人： Makesh Pravin John Wilson , Tao Luo , Sony Akkarakaran , Sumeeth Nagaraja , Shengbo Chen , Xiao Feng Wang , Kaushik Chakraborty
IPC分类号： H04W72/04 , H04W72/06 , H04L1/00 , H04L5/00 , H04B7/06 , H04L1/18 , H04L25/02 , H04B7/08 , H04B7/0456 , H04W52/16 , H04W52/26
摘要： A base station may make more efficient use of resources by transmitting data in a control region of a slot in addition to a data region. In order to avoid performance loss, the base station may adjust the data transmission in the control region in comparison to a data transmission in a data region and may signal an indication to a UE to assist the UE in receiving the data transmission in the control region. An apparatus for wireless communication at the UE receives the indication from the base station regarding the data transmission in the control region and uses the indication to perform rate matching or demodulation of the data transmission in the control region. The indication may indicate any of a different MCS/rank/TPR, a reduced MCS/rank/TPR, an MCS/rank/TPR delta, a control span for a group of UEs, and a starting symbol for the data transmission. The indication may also indicate that there is no data transmitted on resources in the control region.
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公开(公告)号：US11432329B2
公开(公告)日：2022-08-30
申请号：US16052331
申请日：2018-08-01
发明人： Sumeeth Nagaraja , Tao Luo , Sony Akkarakaran , Makesh Pravin John Wilson , Aitzaz Ahmad , Kaushik Chakraborty
摘要： Wireless communications systems and methods related to performing random access procedures. A base station (BS) receives, from a user equipment (UE), a plurality of random access preambles from a plurality of beam directions, wherein each of the plurality of random access preambles is received from a different beam direction, and wherein the plurality of random access preambles are associated with multiple random access opportunities of a random access attempt. The BS sends, in response to the plurality of random access preambles, a plurality of random access response (RAR) messages in the plurality of beam directions.
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公开(公告)号：US11343843B2
公开(公告)日：2022-05-24
申请号：US16837756
申请日：2020-04-01
发明人： Sony Akkarakaran , Tao Luo , Makesh Pravin John Wilson , Sumeeth Nagaraja , Kaushik Chakraborty , Wooseok Nam , Shengbo Chen , Xiao Feng Wang
摘要： A method of wireless communication includes receiving, at a user equipment (UE), a grant from a base station on a control channel, the grant including content indicating a mini-slot assigned to the UE. The method may include interpreting the grant based on a current configuration of a data channel to determine the mini-slot. The method may include communicating with the base station during the mini-slot indicated by the grant.
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公开(公告)号：US11290228B2
公开(公告)日：2022-03-29
申请号：US16450804
申请日：2019-06-24
发明人： Sumeeth Nagaraja , Tao Luo , Sony Akkarakaran , Kaushik Chakraborty , Makesh Pravin John Wilson
摘要： Aspects of the present disclosure relate to wireless communications and, more particularly, to semi-persistent configuration of reference signals (RSs), such as measurement reference signals (MRSs) for beam refinement. An example method generally includes transmitting, to a user equipment (UE), a reference symbol (RS) configuration, wherein transmitting the RS configuration is independent of activating RS training for the UE, transmitting, to the UE, a message indicating an activation of RS training subsequent to transmitting the RS configuration, transmitting RSs to the UE periodically based on the RS configuration, and receiving, from the UE, measurement reports based on the transmitted RS.
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25.发明授权公开(公告)号：US11246105B2
公开(公告)日：2022-02-08
申请号：US16949944
申请日：2020-11-20
发明人： Kaushik Chakraborty , Tao Luo , Shrenik Patel
摘要： A method, an apparatus, and a computer program product for wireless communication are provided. According to some aspects, the apparatus may identify a first power state and a second power state, wherein the first power state is associated with a first transmission or reception of one or more first beams, and the second power state is associated with a second transmission or reception of one or more second beams; and/or switch from the first power state to the second power state, wherein the apparatus is configured to use at least one of a scheduled gap or at least one intermediate power state between the first power state and the second power state to smooth a transition from the first power state to the second power state. Numerous other aspects are provided.
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公开(公告)号：US11240688B2
公开(公告)日：2022-02-01
申请号：US16893270
申请日：2020-06-04
发明人： Sungwoo Park , Arumugam Chendamarai Kannan , Tao Luo , Xiaoxia Zhang , Jing Sun , Srinivas Yerramalli , Vinay Chande , Olufunmilola Omolade Awoniyi-Oteri , Sony Akkarakaran , Mostafa Khoshnevisan , Zhifei Fan , Kaushik Chakraborty
IPC分类号： H04W24/02 , H04W72/12 , H04B17/336
摘要： Methods, systems, and devices for wireless communications are described. In some systems, transmissions from a neighboring base station may interfere with downlink transmissions from a serving base station to a target user equipment (UE). To coordinate interference between the base stations (e.g., mitigate interference, stabilize interference, etc.), the serving base station may generate an interference coordination message and may transmit the message over-the-air (OTA) to one or more neighboring base stations. The message may include parameters indicating a coordination scheme for the neighboring base station(s) to use for modifying one or more scheduling decisions. The coordination scheme may be configured or dynamically selected and may include interfering beam fixation, interfering beam suppression, or interfering beam avoidance. A neighboring base station receiving the OTA interference coordination message may modify a scheduling decision to mitigate or stabilize interference when the serving base station is transmitting to the target UE.
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公开(公告)号：US11109236B2
公开(公告)日：2021-08-31
申请号：US16182527
申请日：2018-11-06
IPC分类号： H04W16/14 , H04L1/00 , H04L5/00 , H04L1/18 , H04W92/10 , H04L5/14 , H04L27/00 , H04W72/12 , H04W28/02
摘要： Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive data transmissions on primary cell and transmit feedback for the data transmissions on a secondary cell, where carriers on the secondary cell have a subcarrier spacing that is greater than the subcarrier spacing of carriers on the primary cell. The UE may perform a self-contained transmission by receiving data and transmitting feedback within a single transmission opportunity. The base station may schedule the UE for only downlink transmissions in the primary cell, removing uplink transmission resources and guard periods from slots of primary cell carriers. The UE may transmit other information on the high band cell as well, such as a channel quality indicator or scheduling requests. The base station may apply rate adjustments for downlink transmission in the next slot of a primary cell carrier.
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公开(公告)号：US20210203384A1
公开(公告)日：2021-07-01
申请号：US17199088
申请日：2021-03-11
IPC分类号： H04B7/0408 , H04B7/0413 , H04W72/04 , H04B7/08 , H04B7/06 , H04L5/00
摘要： Methods, systems, and devices for wireless communication are described. A base station may configure a first sub-band and a second sub-band of a system bandwidth for communication with a user equipment (UE). The base station may determine a spatial quasi co-location (QCL) relationship between the first sub-band and the second sub-band and may transmit signaling to the UE that indicates the determined spatial QCL relationship. Upon receiving the signaling, the UE may derive, based on the indicated spatial QCL relationship, spatial parameters (e.g., beam width, pointing angle, etc.) for communication with the base station via the second sub-band. The spatial parameters may be derived based on spatial parameters used for reception of a downlink transmission from the base station via the first sub-band. Subsequently, the UE may communicate with the base station via the second sub-band using the derived spatial parameters.
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公开(公告)号：US10912012B2
公开(公告)日：2021-02-02
申请号：US16446120
申请日：2019-06-19
发明人： Kaushik Chakraborty , Xiaoxia Zhang , Jing Sun , Tamer Kadous
摘要： Wireless communications systems and methods related to initial network access in a network deployed over a downlink unlicensed band paired with one or more UL bands are provided. A first wireless communication device communicates, with a second wireless communication device in a downlink unlicensed band, a first broadcast communication signal during a discovery time period configured based on a network discovery configuration. The first broadcast communication signal includes a configuration for requesting a second broadcast communication signal when there is no second broadcast communication signal detected within the discovery time period. The first wireless communication device communicates, with the second wireless communication device, a request for the second broadcast communication signal based on the configuration. The first wireless communication device communicates, with the second wireless communication device in the downlink unlicensed band, the second broadcast communication signal outside of the discovery time period in response to the request.
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公开(公告)号：US10893540B2
公开(公告)日：2021-01-12
申请号：US16046781
申请日：2018-07-26
发明人： Sony Akkarakaran , Tao Luo , Makesh Pravin John Wilson , Sumeeth Nagaraja , Xiao Feng Wang , Kaushik Chakraborty , Wooseok Nam , Shengbo Chen , Juan Montojo
摘要： Methods, systems, and devices for wireless communication are described. Wireless communications systems may support uplink random access channel (RACH) transmissions on multiple beams and over multiple component carriers (CCs). A wireless device may transmit a random access preamble to a base station in a first RACH transmission, which may indicate a set of CCs over which the base station may respond with a random access response (RAR) in a second RACH transmission. The second RACH transmission may then include an indication for which CCs the wireless device may use for a subsequent RACH transmission (e.g., a RACH message 3). The wireless device may also indicate a beam index and/or time-frequency resources associated with beams and/or CCs used for such cell acquisition transmissions. In other examples, the base station may indicate resources (e.g., via a handover command or RACH command) for wireless device scheduling request and/or beam-failure recovery request transmission.
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