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公开(公告)号：US20200084674A1
公开(公告)日：2020-03-12
申请号：US16681219
申请日：2019-11-12
发明人： Keiichi KUBOTA , Tingfang JI , Tao LUO , Gavin Bernard HORN , John Edward SMEE , Ravi AGARWAL , Joseph Binamira SORIAGA , Saurabha Rangrao TAVILDAR
摘要： Aspects of the present disclosure provide methods and apparatus for beam selection in uplink-based and downlink-based mobility scenarios, for example, for new radio (NR) systems which can improve handover reliability, reduce handover frequency, and improve power efficiency. Certain aspects provide a method for wireless communications by a user equipment (UE). The method generally includes transmitting an uplink reference signal with an indication of a preferred downlink beam and receiving a downlink transmission based, at least in part, on the uplink reference signal.
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公开(公告)号：US20190394708A1
公开(公告)日：2019-12-26
申请号：US16467029
申请日：2017-10-26
发明人： Aleksandar DAMNJANOVIC , Karl Georg HAMPEL , Gavin Bernard HORN , Keiichi KUBOTA , Ravi AGARWAL , Peng CHENG
摘要： Various aspects of the disclosure relate to delivering a limited amount of system information. For example, the delivery of system information may be divided into broadcasting a limited amount of the system information and using unicast signaling for delivery of the remaining system information. In some aspects, the delivery of a limited amount of system information may involve broadcasting a compressed PLMN ID list (e.g., broadcasting indications of PLMNs). In some aspects, the delivery of a limited amount of system information may involve broadcasting an indication of the version of system information that is valid for a cell. In some aspects, the delivery of a limited amount of system information may involve broadcasting multiple configurations of system information along with indications of each configuration. In some aspects, the delivery of a limited amount of system information may involve broadcasting compressed non-cell-related system information.
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公开(公告)号：US20180092159A1
公开(公告)日：2018-03-29
申请号：US15719492
申请日：2017-09-28
摘要： Aspects of the present disclosure provide methods and apparatus for improving UL-based mobility. As described herein, a UE may determine it has failed to decode a first keep alive (KA) signal during a wake period of a discontinuous receive (DRx) cycle and may extend the wake period to monitor for a second KA signal, in response to the determination. An access network controller may select, while a (UE) is currently served by a first transmit/receive point (TRP), a second TRP to serve the UE, configure the first TRP to transmit a first keep alive (KA) signal, in response to a chirp signal received from the UE, and configure the second TRP to transmit a second KA signal after the first KA signal transmitted by the first TRP.
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公开(公告)号：US20170230869A1
公开(公告)日：2017-08-10
申请号：US15268279
申请日：2016-09-16
发明人： Keiichi KUBOTA , Tingfang JI , Tao LUO , Gavin Bernard HORN , John Edward SMEE , Ravi AGARWAL , Joseph Binamira SORIAGA , Saurabha Rangrao TAVILDAR
摘要： Aspects of the present disclosure provide methods and apparatus for beam selection in uplink-based and downlink-based mobility scenarios, for example, for new radio (NR) systems which can improve handover reliability, reduce handover frequency, and improve power efficiency. Certain aspects provide a method for wireless communications by a user equipment (UE). The method generally includes transmitting an uplink reference signal with an indication of a preferred downlink beam and receiving a downlink transmission based, at least in part, on the uplink reference signal.
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公开(公告)号：US20220400422A1
公开(公告)日：2022-12-15
申请号：US17810716
申请日：2022-07-05
发明人： Karthika PALADUGU , Gavin Bernard HORN , Prashanth Haridas HANDE , Keiichi KUBOTA , Prasad Reddy KADIRI , Alberto RICO ALVARINO , Masato KITAZOE , Umesh PHUYAL , Supratik BHATTACHARJEE
IPC分类号： H04W36/18 , H04W36/08 , H04W76/27 , H04W12/04 , H04W36/00 , H04W12/033 , H04W12/106
摘要： Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment concurrently communicates with a source base station (BS) and a target BS on a connection with the source BS and a connection with the target BS as part of a make-before-break (MBB) handover procedure; and performs a common packet data convergence protocol (PDCP) function for the connection with the source BS and the connection with the target BS before the connection with the source BS is released as part of the MBB handover procedure. Numerous other aspects are provided.
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公开(公告)号：US20190313294A1
公开(公告)日：2019-10-10
申请号：US16373205
申请日：2019-04-02
IPC分类号： H04W36/00 , H04W80/08 , H04W36/04 , H04W12/04 , H04W76/27 , H04W72/04 , H04W8/08 , H04W12/00
摘要： Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a message that indicates a change from an evolved universal mobile telecommunications system (UMTS) terrestrial radio access (E-UTRA) packet data convergence protocol (PDCP) to a New Radio (NR) PDCP, wherein the message includes an instruction to perform an intra-cell handover; generate one or more security keys based at least in part on receiving the message that includes the instruction to perform the intra-cell handover; and communicate using the one or more security keys after the intra-cell handover is performed. Numerous other aspects are provided.
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公开(公告)号：US20180091968A1
公开(公告)日：2018-03-29
申请号：US15462574
申请日：2017-03-17
发明人： Hung LY , Heechoon LEE , Haitong SUN , Tingfang JI , Wanshi CHEN , Keiichi KUBOTA
CPC分类号： H04W8/08 , H04L43/16 , H04W36/0061 , H04W36/0088 , H04W36/32 , H04W64/003 , H04W64/006 , H04W68/02 , H04W76/27
摘要： Various aspects described herein relate to techniques for mobility mode selection in uplink-based and downlink-based mobility in wireless communications systems. In an aspect, a method for wireless communications may include determining that a user equipment (UE) is operating in a first mobility mode, determining whether the UE satisfies at least one condition associated with mobility of the UE for mobility mode selection, and selecting a second mobility mode based on a determination that the UE satisfies the at least one condition, wherein each of the first mobility mode and the second mobility mode is an uplink mobility mode or a downlink mobility mode. The techniques described herein may apply to different communications technologies, including the 5th Generation (5G) New Radio (NR) communications technology.
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公开(公告)号：US20180049270A1
公开(公告)日：2018-02-15
申请号：US15621072
申请日：2017-06-13
发明人： Keiichi KUBOTA , Gavin Bernard HORN , Luis LOPES , Masato KITAZOE
CPC分类号： H04W76/28 , H04W48/02 , H04W48/08 , H04W48/20 , H04W52/02 , H04W52/0206 , H04W52/0216 , H04W52/0219 , H04W68/00 , H04W72/0446 , H04W72/1263 , H04W72/1289 , H04W88/08 , Y02D70/00 , Y02D70/1242 , Y02D70/1262 , Y02D70/1264 , Y02D70/142 , Y02D70/146 , Y02D70/164 , Y02D70/20 , Y02D70/21 , Y02D70/23 , Y02D70/24 , Y02D70/25 , Y02D70/26
摘要： Certain aspects of the present disclosure relate to methods and apparatus for cell DTX (Discontinuous Transmission) scheduling. A Base Station (BS) determines an operational schedule for the BS including at least one ON period and at least one OFF period, wherein the BS provides a reduced level of service during the at least one OFF period relative to the at least one ON period. The BS transmits the determined operational schedule. A User Equipment (UE) receives the BS's operational schedule and determines, based on the BS's operational schedule and its own operational schedule also including ON and OFF periods, whether to perform at least one service associated with the BS.
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公开(公告)号：US20170332283A1
公开(公告)日：2017-11-16
申请号：US15591253
申请日：2017-05-10
发明人： Keiichi KUBOTA , Gavin Bernard HORN , Tingfang JI
CPC分类号： H04W36/0016 , H04W36/0058 , H04W36/0085 , H04W36/08 , H04W72/0413 , H04W72/042
摘要： Aspects of the present disclosure provide apparatus and techniques that may be applied in systems that may help enable efficient communication between a base station (BS) and certain devices, such as wearable devices and/or machine type communication (MTC) user equipments (UEs), having a single receiver (RX) for long term evolution (LTE). An exemplary method, performed by a BS, generally includes receiving, from a UE, an indication of a category of the UE, wherein the category of the UE indicates at least one of: a maximum throughput supported by the UE or a number of layers supported by the UE; assuming a number of receivers at the UE based on the category of the UE; determining one or more transmit parameters based on the number of receivers of the UE; and communicating with the UE according to the one or more transmit parameters.
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公开(公告)号：US20170171903A1
公开(公告)日：2017-06-15
申请号：US15140465
申请日：2016-04-27
CPC分类号： H04W76/027 , H04L41/0672 , H04W24/04 , H04W36/0011 , H04W36/04 , H04W36/165 , H04W36/30 , H04W48/16 , H04W76/15 , H04W76/16 , H04W76/18 , H04W76/19 , H04W76/27
摘要： Certain aspects of the present disclosure relate to methods and apparatus for wireless communication, and more particularly, to methods and apparatus for radio link failure (RLF) failover in a multi-connectivity environment. For example, in certain aspects, a mobile device for establishing one or more first data flows with a first network entity, determining a link recovery configuration, the link recovery configuration having information related to establishing a second data flow in the event of a link failure at the first network entity, wherein the link recovery configuration comprises a list of network entities, detecting a link failure at the first network entity affecting a service associated with the first data flows, and recovering the service associated with the first data flows from the link failure by selecting a second network entity from the list of network entities and establishing the second data flow associated with the service based on the link recovery configuration.
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