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1.发明授权公开(公告)号：US10804991B2
公开(公告)日：2020-10-13
申请号：US16140838
申请日：2018-09-25
摘要： Methods and apparatus are provided for mobility support through beam tracking in the new radio access system. In one novel aspect, one or more beam-sets are configured for fast beam tracking. Each beam-set includes one or more multiple beams or transmit-receive points (TRPs). The UE performs the mobility support through lower layer based on one or more configured beam-sets. The lower layer can be a MAC layer or a PHY layer. In one embodiment, a channel status information (CSI) set and a transmission set are configured. The UE performs CSI measurements on all beams of the CSI set for potential beam tracking and data transmitting and receiving, and control signaling through one or more beams of the transmission set. In another embodiment, the UE further configures a candidate set. The beam-sets can be configured by the network or by the UE.
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2.发明申请公开(公告)号：US20160353510A1
公开(公告)日：2016-12-01
申请号：US15232217
申请日：2016-08-09
发明人： Yuanyuan Zhang , Chia-Hao Yu , Yu-Syuan Jheng , Aimin Justin Sang
CPC分类号： H04L43/16 , H04B7/0617 , H04B7/0695 , H04W16/28 , H04W16/32 , H04W72/085 , H04W74/0833 , H04W76/18 , H04W76/19
摘要： Apparatus and methods are provided to handle the intermittent disconnections in an mmW system. In one novel aspect, the beam tracking failure is determined upon detection of one or more tracking failure conditions. In one embodiment, the UE further considers potential recoveries to avoid frequent triggering of the beam-tracking failure condition. In another novel aspect, the UE performs one or more recovery procedures based on one or more recovery conditions. In one embodiment, the UE performs the initial alignment procedure to recover the connection. In another embodiment, the UE performs the beam-switching request procedure before triggers the initial alignment procedure. In one embodiment, timers are used to supervise the recovery procedures. In another embodiment, macro-assisted procedures are used for the beam-switching request procedure. In yet another novel aspect, the UE performs reestablishment of a new connection at the upper layer upon receiving the beam-tracking failure indicator.
摘要翻译： 提供了设备和方法来处理mmW系统中的断续断开。 在一个新颖的方面，通过检测到一个或多个跟踪故障条件来确定光束跟踪故障。 在一个实施例中，UE还考虑潜在的恢复以避免波束跟踪失败状况的频繁触发。 在另一个新颖的方面，UE基于一个或多个恢复条件执行一个或多个恢复过程。 在一个实施例中，UE执行初始对准过程以恢复连接。 在另一个实施例中，UE在触发初始对准过程之前执行波束切换请求过程。 在一个实施例中，定时器用于监督恢复过程。 在另一个实施例中，宏辅助程序用于波束切换请求过程。 在另一个新颖的方面，UE在接收到波束跟踪失败指示符时，在上层重新建立新的连接。
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3.发明授权公开(公告)号：US10979127B2
公开(公告)日：2021-04-13
申请号：US16500960
申请日：2018-08-10
发明人： Yuanyuan Zhang , Chia-Hao Yu
摘要： An electronic device (110) includes a transceiver (130) and processing circuitry (150). The transceiver (130) can wirelessly receive a first (121) and a second signal (122 or 123) from an interface node (120) of a network work (101). The first signal (121) carries control information associated with a wireless link (105) between the electronic device (110) and the interface node (120). The processing circuitry (150) can obtain a first and a second signal quality of the first (121) and second signal (122 or 123) at a first protocol layer (PHY) in a protocol stack, respectively. At a second protocol layer (MAC), the processing circuitry (150) can determine whether the first signal (121) satisfies a beam failure criterion based on the first signal quality, and identify the second signal (122 or 123) as a candidate beam when the second signal (122 or 123) satisfies a candidate beam criterion based on the second signal quality. The first protocol layer (PHY) can transmit a request for beam failure recovery (BFR), and monitor reception of a network response for the request.
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4.发明授权公开(公告)号：US10805961B2
公开(公告)日：2020-10-13
申请号：US16310217
申请日：2017-11-03
发明人： Yuanyuan Zhang , Chia-Hao Yu , Chia-Chun Hsu
摘要： Aspects of the disclosure provide a method for determination of a transmission or reception beam format in a random access process. The method can include determining, at a local entity, the Tx beam format or the Rx beam format for communication between the local entity and a remote entity during the random access process between the local entity and the remote entity in a wireless communication system employing beamforming techniques according to historical operations and channel reciprocity availability. The method can further includes transmitting or receiving, at the local entity, a random access message exchanged between the local entity and the remote entity according to the determined Tx beam format or Rx beam format, respectively.
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5.发明申请公开(公告)号：US20190028170A1
公开(公告)日：2019-01-24
申请号：US16140838
申请日：2018-09-25
摘要： Methods and apparatus are provided for mobility support through beam tracking in the new radio access system. In one novel aspect, one or more beam-sets are configured for fast beam tracking. Each beam-set includes one or more multiple beams or transmit-receive points (TRPs). The UE performs the mobility support through lower layer based on one or more configured beam-sets. The lower layer can be a MAC layer or a PHY layer. In one embodiment, a channel status information (CSI) set and a transmission set are configured. The UE performs CSI measurements on all beams of the CSI set for potential beam tracking and data transmitting and receiving, and control signaling through one or more beams of the transmission set. In another embodiment, the UE further configures a candidate set. The beam-sets can be configured by the network or by the UE.
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6.发明申请公开(公告)号：US20200178340A1
公开(公告)日：2020-06-04
申请号：US16784420
申请日：2020-02-07
摘要： Apparatus and methods are provided for RLM and RLF procedure in a wireless network. In one novel aspect, the UE generates radio link monitoring (RLM) measurement results for multiple physical downlink control channels (PDCCHs), groups the PDCCHs to multiple RLM groups based on a grouping rule to generate link status for each RLM group based on a RLM group status rule, wherein each RLM group contains one or more PDCCHs and belongs to a critical type or a non-critical type based on the one or more PDCCH types in the group and initiates a radio resource control (RRC) connection re-establishment procedure if the link status of a critical type of RLM group indicates link failure, otherwise, generates a radio link failure (RLF) report to the wireless network if the link status of a non-critical type of RLM group indicates link failure.
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公开(公告)号：US10652130B2
公开(公告)日：2020-05-12
申请号：US16289986
申请日：2019-03-01
发明人： Yuanyuan Zhang , Chia-Hao Yu , Yu-Syuan Jheng , Aimin Justin Sang
IPC分类号： H04L12/26 , H04B7/06 , H04W16/28 , H04W72/08 , H04W74/08 , H04W76/18 , H04W16/32 , H04W76/19
摘要： Apparatus and methods are provided to handle the intermittent disconnections in an mmW system. In one novel aspect, the beam tracking failure is determined upon detection of one or more tracking failure conditions. In one embodiment, the UE further considers potential recoveries to avoid frequent triggering of the beam-tracking failure condition. In another novel aspect, the UE performs one or more recovery procedures based on one or more recovery conditions. In one embodiment, the UE performs the initial alignment procedure to recover the connection. In another embodiment, the UE performs the beam-switching request procedure before triggers the initial alignment procedure. In one embodiment, timers are used to supervise the recovery procedures. In another embodiment, macro-assisted procedures are used for the beam-switching request procedure. In yet another novel aspect, the UE performs reestablishment of a new connection at the upper layer upon receiving the beam-tracking failure indicator.
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公开(公告)号：US10257070B2
公开(公告)日：2019-04-09
申请号：US15232217
申请日：2016-08-09
发明人： Yuanyuan Zhang , Chia-Hao Yu , Yu-Syuan Jheng , Aimin Justin Sang
IPC分类号： H04W76/00 , H04W16/28 , H04W72/08 , H04W74/08 , H04L12/26 , H04B7/06 , H04W76/18 , H04W16/32 , H04W76/19
摘要： Apparatus and methods are provided to handle the intermittent disconnections in an mmW system. In one novel aspect, the beam tracking failure is determined upon detection of one or more tracking failure conditions. In one embodiment, the UE further considers potential recoveries to avoid frequent triggering of the beam-tracking failure condition. In another novel aspect, the UE performs one or more recovery procedures based on one or more recovery conditions. In one embodiment, the UE performs the initial alignment procedure to recover the connection. In another embodiment, the UE performs the beam-switching request procedure before triggers the initial alignment procedure. In one embodiment, timers are used to supervise the recovery procedures. In another embodiment, macro-assisted procedures are used for the beam-switching request procedure. In yet another novel aspect, the UE performs reestablishment of a new connection at the upper layer upon receiving the beam-tracking failure indicator.
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9.发明授权公开(公告)号：US11496199B2
公开(公告)日：2022-11-08
申请号：US16310111
申请日：2018-05-03
发明人： Yuanyuan Zhang , Chia-Hao Yu , Yu-Syuan Jheng
摘要： Aspects of the disclosure provide a method of beam failure handling. The method can include performing beam quality measurement of one or more beams transmitted from a base station (BS) at a user equipment (UE) in a beamformed wireless communication system, determining a beam failure occurs based on the beam quality measurement, and performing a beam recovery process that includes at least one of a contention-free beam recovery process or a contention-based beam recovery process. The one or more beams are used for transmitting physical downlink control channels (PDCCHs).
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公开(公告)号：US11160129B2
公开(公告)日：2021-10-26
申请号：US16319406
申请日：2016-08-12
发明人： Yuanyuan Zhang , Chia-Chun Hsu , Chia-Hao Yu
IPC分类号： H04W76/18 , H04W16/28 , H04W76/19 , H04W24/10 , H04W76/27 , H04W72/04 , H04W74/08 , H04W88/06 , H04B17/318
摘要： Apparatus and methods are provided to detect radio link failure in a NR access system. In one novel aspect, the radio link failure is detected upon detection of one or more radio link failure conditions on the serving beam. In one embodiment, the physical layer problem is considered as detected when one or more predefined events occur for a number of consecutive times on the serving beam. In another embodiment, the UE further considers potential recoveries to avoid frequent triggering of the radio link failure condition. In one embodiment, the UE performs the initial alignment procedure to recover the connection. In one embodiment, UE performs the initial alignment procedure without performing radio link recovery on the serving beam. In other embodiments, the UE performs the initial alignment procedure after performing radio link recovery on the serving beam and/or selects one or more beams for initial beam alignment.
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