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公开(公告)号:US10862606B2
公开(公告)日:2020-12-08
申请号:US16005181
申请日:2018-06-11
发明人: Wooseok Nam , Tao Luo , Makesh Pravin John Wilson , Sony Akkarakaran , Kaushik Chakraborty , Shengbo Chen
摘要: Various aspects described herein relate to techniques for signaling and using one or more virtual cell identifications (V-cell IDs) for single frequency network (SFN)-type of transmissions in wireless communications systems. A method, a computer-readable medium, and an apparatus are provided. In an aspect, the method may include performing, by a user equipment (UE), a cell search to obtain a cell ID, and decoding, by the UE, a message based on the cell ID, wherein the message includes a master information block (MIB). The method may further include identifying, by the UE, a virtual cell ID used for SFN-type transmissions based on information decoded from the message. The techniques described herein may apply to different communications technologies, including 5th Generation (5G) New Radio (NR) communications technology.
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公开(公告)号:US10834782B2
公开(公告)日:2020-11-10
申请号:US16180938
申请日:2018-11-05
IPC分类号: H04W88/06 , H04W74/08 , H04L27/26 , H04W76/27 , H04W8/24 , H04L5/00 , H04W76/15 , H04W88/08 , H04W36/06 , H04W88/02
摘要: Methods, systems, and devices for wireless communications are described that provide for activating and deactivating high-band connections, such as millimeter wave (mmW) connections while maintaining a low-band connection, based on a state of a user equipment (UE). An initial low-band connection, such as a connection that uses lower frequencies than mmW frequencies, may be established by a UE and a base station, and the base station may configure the UE for one or more high-band connections with one or more high-band base stations. The base station may provide an activation command to the UE to activate a high-band connection, and the UE may determine a currently supported mode for the activated high-band connection and establish the high-band connection based on the currently supported mode.
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公开(公告)号:US10779273B2
公开(公告)日:2020-09-15
申请号:US15913718
申请日:2018-03-06
发明人: Makesh Pravin John Wilson , Tao Luo , Xiao Feng Wang , Sony Akkarakaran , Sumeeth Nagaraja , Shengbo Chen , Kaushik Chakraborty
摘要: Certain aspects of the present disclosure provide techniques for selecting an uplink (UL) transmit beam by a user equipment (UE). A UE may receive, from a base station (BS), one or more beamformed downlink signals using one or more receive beams. The UE may select an uplink transmit beam based, at least in part, on the one or more beamformed downlink signals. The UE may transmit an uplink signal using the selected uplink transmit beam.
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公开(公告)号:US10686506B2
公开(公告)日:2020-06-16
申请号:US16053547
申请日:2018-08-02
发明人: Makesh Pravin John Wilson , Tao Luo , June Namgoong , Sony Akkarakaran , Xiao Feng Wang , Sumeeth Nagaraja , Juan Montojo , Shengbo Chen , Kaushik Chakraborty , Wooseok Nam
IPC分类号: H04L5/00 , H04W72/04 , H04W72/08 , H04W88/08 , H04B7/06 , H04B7/08 , H04W16/28 , H04W76/27 , H04W88/02
摘要: Aspects of the present disclosure relate to deriving spatial receive parameters for quasi-colocation at a user equipment (UE). An exemplary method generally includes receiving a plurality of beams from a base station in a plurality of coarse directions, determining, based on the plurality of beams, a first spatial colocation parameter, transmitting an indication of a coarse direction associated with a beam having a highest receive strength of the plurality of beams, receiving a plurality of second beams from the base station based on the indication, the plurality of second beams having a narrower beam width than the plurality of beams and covering a beam width of the beam associated with the indicated coarse direction, determining, based on the plurality of second beams, a second spatial colocation parameter, transmitting an indication of the second beam having a highest receive strength, and refining at least one of the first or second spatial colocation parameters.
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公开(公告)号:US10680700B2
公开(公告)日:2020-06-09
申请号:US16040178
申请日:2018-07-19
发明人: Kaushik Chakraborty , Tao Luo , Wooseok Nam , Sumeeth Nagaraja , Sony Akkarakaran , Makesh Pravin John Wilson , Xiao Feng Wang , Shengbo Chen , Juan Montojo
摘要: Aspects of the present disclosure relate to techniques that may enhance radio link failure (RLF) procedures. In some cases, a UE may perform radio link monitoring (RLM) based on reference signals (RS) transmitted using a first set of beams, perform beam failure recovery (BFR) monitoring based on transmissions using a second set of beams, and adjust one or more radio link failure (RLF) parameters based on both the RLM monitoring and the BFR monitoring.
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公开(公告)号:US10674498B2
公开(公告)日:2020-06-02
申请号:US16157869
申请日:2018-10-11
摘要: Aspects of the present disclosure provide various procedures and methods for accelerated secondary cell (SCell) activation when carrier aggregation (CA) is configured. A scheduling entity receives, from a network entity, an indication of anticipated data for a user equipment (UE) in an idle mode. The scheduling entity determines supplemental wake-up information based on the carrier aggregation capability of the PCell. The scheduling entity transmits a wake-up message to the UE. The wake up message is configured to cause the UE to wake up in a CA configuration using the PCell and one or more SCells, based on the supplemental wakeup information.
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公开(公告)号:US20200100222A1
公开(公告)日:2020-03-26
申请号:US16570820
申请日:2019-09-13
发明人: Kaushik Chakraborty , Xiaoxia Zhang , Jing Sun , Tao Luo
摘要: Methods, systems, and devices for using a common physical downlink control channel (PDCCH) to indicate transmission beams to be used by a base station during a transmission opportunity or a periodicity to monitor search spaces are described. A user equipment (UE) may monitor a search space (in some cases, using a periodicity) for the common PDCCH to determine if transmission beams associated with the UE are to be used during the transmission opportunity. If so, the UE may wake-up during at least a portion of the transmission opportunity to receive additional information. If the common PDCCH indicates that no transmission beams associated with the UE are to be used during the transmission opportunity, the UE may enter or re-enter the sleep state. The UE may switch to a new periodicity for monitoring the search space based on the information transmitted within the common PDCCH.
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公开(公告)号:US20200037361A1
公开(公告)日:2020-01-30
申请号:US16508610
申请日:2019-07-11
发明人: Kaushik Chakraborty , Xiaoxia Zhang , Jing Sun , Kapil Bhattad , Tao Luo
摘要: Wireless communications systems and methods related to communicating random access messages are provided. A method includes communicating, by a first wireless communication device with a second wireless communication device, mode information for determining whether to perform a listen-before-talk (LBT) mode for a random access procedure. The method also includes communicating, by the first wireless communication device with the second wireless communication device, a random access message based on the mode information.
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公开(公告)号:US20200008131A1
公开(公告)日:2020-01-02
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:US10512080B2
公开(公告)日:2019-12-17
申请号:US15895789
申请日:2018-02-13
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 , H04W52/16 , H04W52/26 , H04B7/0456 , H04B7/08
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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