公开(公告)号：US20170078177A1

公开(公告)日：2017-03-16

申请号：US15122748

申请日：2014-06-30

Applicant: QUALCOMM Incorporated

Inventor： Huan XU ,  Xiaojian LONG ,  Tim Tynghuei LIOU ,  Yong XIE ,  Xuepan GUAN ,  Jie MAO ,  Shiau-He TSAI

IPC: H04L12/26 ,  H04W24/08 ,  H04W24/02

CPC classification number: H04L43/0852 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/16 ,  H04W24/02 ,  H04W24/08 ,  H04W80/02

Abstract: A method and apparatus for reducing call drop rate by validating reconfiguration messages based on service data unit (SDU) lifetime are described. A receiving device, such as a user equipment, may determine a receiving delay between receiving a first protocol data unit (PDU) and receiving a last PDU of a reconfiguration message SDU. The receiving delay may be compared with an SDU lifetime. The reconfiguration message SDU may be validated based on the comparison of the receiving delay with the SDU lifetime. A receiving delay that is greater than the SDU lifetime may indicate that the SDU is stale and, therefore, invalid. A receiving delay that is less than the SDU lifetime may indicate that the timing of the SDU is valid and the reconfiguration message SDU is to be processed. An activation time of the reconfiguration message SDU may also be honored or disregarded based on the receiving delay.

Abstract translation: 描述了通过基于服务数据单元（SDU）寿命验证重新配置消息来减少呼叫丢弃率的方法和装置。 诸如用户设备的接收设备可以确定在接收第一协议数据单元（PDU）和接收重新配置消息SDU的最后PDU之间的接收延迟。 可以将接收延迟与SDU寿命进行比较。 可以基于接收延迟与SDU寿命的比较来验证重新配置消息SDU。 大于SDU寿命的接收延迟可能表示SDU过时，因此无效。 小于SDU寿命的接收延迟可以指示SDU的定时有效并且重新配置消息SDU将被处理。 基于接收延迟，重新配置消息SDU的激活时间也可以被兑现或忽略。

公开(公告)号：US20160135114A1

公开(公告)日：2016-05-12

申请号：US14705611

申请日：2015-05-06

Applicant: QUALCOMM Incorporated

Inventor： Liangchi HSU ,  Thawatt GOPAL ,  Huan XU ,  Ansah Ahmed SHEIK ,  Satish Pavan Kumar NICHANAMETLA ,  Vagish GUPTA ,  Sathish KRISHNAMOORTHY ,  Sitaramanjaneyulu KANAMARLAPUDI ,  Qingxin CHEN ,  Xuepan GUAN ,  Xiaojian LONG

IPC: H04W48/06 ,  H04W24/08

CPC classification number: H04W48/06 ,  H04W24/08 ,  H04W60/005 ,  H04W76/16 ,  H04W76/18 ,  H04W76/20

Abstract: Aspects described herein relate to throttling packet-switched (PS) call establishment in wireless communications. A circuit-switched (CS) call can be conducted by using a first radio access technology (RAT). A cell update (CU) procedure for a PS call using a second RAT can be detected as due to one or more conditions. A cause for the one or more conditions can be determined based on one or more parameters related to a transmitter or receiver. PS call establishment attempts can accordingly be throttled based at least in part on determining the cause for the one or more conditions

Abstract translation: 本文描述的方面涉及在无线通信中限制分组交换（PS）呼叫建立。 可以通过使用第一无线接入技术（RAT）来进行电路交换（CS）呼叫。 由于一个或多个条件，可以检测使用第二RAT的PS呼叫的小区更新（CU）过程。 可以基于与发射机或接收机相关的一个或多个参数来确定一个或多个条件的原因。 至少部分地基于确定一个或多个条件的原因，可以相应地调节PS呼叫建立尝试

公开(公告)号：US20210168701A1

公开(公告)日：2021-06-03

申请号：US17105430

申请日：2020-11-25

Applicant: QUALCOMM Incorporated

Inventor： Yongle WU ,  Satashu GOEL ,  Arvind Vardarajan SANTHANAM ,  Chinmay Shankar VAZE ,  Alexei Yurievitch GOROKHOV ,  Brian Clarke BANISTER ,  Daniel AMERGA ,  Huan XU

IPC: H04W48/16 ,  H04B17/336

Abstract: A cell acquisition technique for 5G and other RATs is provided in which shallow scans are interleaved with deep scans. In each shallow scan, a UE determines whether a synchronization signal is received with sufficient signal quality over one period for the synchronization signal. In each deep scan, the UE determines whether the synchronization signal is received with sufficient signal quality over multiple periods for the synchronization signal.

公开(公告)号：US20190230519A1

公开(公告)日：2019-07-25

申请号：US15880269

申请日：2018-01-25

Applicant: QUALCOMM Incorporated

Inventor： Huan XU ,  Shan QING ,  Kumarabhijeet SINGH ,  Chetan CHAKRAVARTHY ,  Arvindhan KUMAR ,  Parthasarathy KRISHNAMOORTHY

IPC: H04W16/28 ,  H04W64/00

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine location information regarding the UE; and activate a receive beam of the UE in at least one symbol, associated with at least one transmit beam of at least one base station, based at least in part on the location information, wherein the UE is configured to activate the receive beam based at least in part on mapping information, at least partially determined by the UE, that indicates that the receive beam is associated with the location information. Numerous other aspects are provided.

公开(公告)号：US20230300746A1

公开(公告)日：2023-09-21

申请号：US18040919

申请日：2021-09-29

Applicant: QUALCOMM Incorporated

Inventor： Arnab PAL ,  Linzhe LI ,  Huan XU ,  Uzma Khan QAZI ,  Vishnu Namboodiri KARAKKAD KESAVAN NAMBOODIRI

IPC: H04W52/02 ,  H04W76/28 ,  H04W74/08

CPC classification number: H04W52/0225 ,  H04W76/28 ,  H04W74/0833

Abstract: A wireless communication device can adaptively perform tracking loop updates for rude wake-up events when operating in a discontinuous reception (DRX) mode. In an aspect, the wireless communication device can perform one or more tracking loop updates, such as time tracking loop (TTL) updates and frequency tracking loop (FTL) updates, based on a time difference between a last tracking loop update and a warm-up occasion associated with a rude wake-up event being greater than a threshold. In addition, in response to the time difference being less than or equal to the threshold, the wireless communication device can perform the rude wake-up event without performing the one or more tracking loop updates.

公开(公告)号：US20190132826A1

公开(公告)日：2019-05-02

申请号：US15799832

申请日：2017-10-31

Applicant: QUALCOMM Incorporated

Inventor： Huan XU ,  Shan QING ,  Yan Ming WANG

IPC: H04W72/04 ,  H04W36/08 ,  H04W24/08

CPC classification number: H04W72/046 ,  H04B7/0619 ,  H04B7/0695 ,  H04W16/28 ,  H04W24/08 ,  H04W36/00835 ,  H04W36/0088 ,  H04W36/06 ,  H04W36/08

Abstract: Methods and apparatus are provided for aggressive beam selection during a handover procedure. A User Equipment (UE) measures a plurality of candidate downlink beams of a target base station (BS), wherein measurement opportunities for each of the candidate downlink beams are scheduled periodically. The UE reports measurements relating to one or more of the measured candidate downlink beams to a source BS. The UE receives a command to handover to the target BS, and in response to receiving the command, attempts to find a new downlink beam of the target BS having a corresponding measurement opportunity that is earlier than a next measurement opportunity of one of the one or more candidate downlink beam.

公开(公告)号：US20250047355A1

公开(公告)日：2025-02-06

申请号：US18716621

申请日：2022-03-02

Applicant: QUALCOMM Incorporated

Inventor： Jiaheng LIU ,  Yong LI ,  Jie ZHANG ,  Yuxiao HOU ,  Kainan LI ,  Zhanyi LIU ,  Raj Kumar NATTHA ,  Tom CHIN ,  Huan XU ,  Jyothi Kiran VATTIKONDA

IPC: H04B7/06 ,  H04W24/10 ,  H04W56/00

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a network entity, an absolute threshold synchronization signal block (SSB) consolidation parameter. The TUE may determine whether a threshold value indicated in the absolute threshold SSB consolidation parameter satisfies a predefined value threshold. The UE may set a specific network deployment flag based at least in part on whether the threshold value satisfies the predefined value threshold. The UE may determine a cell measurement result based at least in part on the specific network deployment flag. The UE may perform a downlink beam selection and a beam switch evaluation based at least in part on the specific network deployment flag. Numerous other aspects are described.

公开(公告)号：US20160014658A1

公开(公告)日：2016-01-14

申请号：US14759882

申请日：2013-05-21

Applicant: Huan XU ,  Xuepan GUAN ,  Tim Tynghuei LIOU ,  Shiau-He TSAI ,  Yong XIE ,  QUALCOMM INCORPORATED

Inventor： Huan XU ,  Xuepan GUAN ,  Tim Tynghuei LIOU ,  Shiau-He TSAI ,  Yong XIE

IPC: H04W36/08 ,  H04W76/04 ,  H04W72/04

CPC classification number: H04W36/08 ,  H04W36/023 ,  H04W36/10 ,  H04W72/0413 ,  H04W72/042 ,  H04W76/27

Abstract: A method and apparatus for avoiding call drops during Serving Radio Network Subsystem (SRNS) relocation procedure are described. In an aspect, the method may include receiving an SRNS RELOCATION message and initiating a handover procedure from a first radio network subsystem (RNS) to a second RNS based on the SRNS RELOCATION message. The method may include identifying a downlink (DL) message and identifying an uplink (UL) message. The method may include holding the DL message and the UL message at a radio resource control (RRC) layer until completion of the handover procedure. In another aspect, the SRNS RELOCATION message may include a new FRESH value. The method may include retaining an old FRESH value determined before the SRNS RELOCATION was received. The method may include applying both the old FRESH value and new FRESH value to the DL message to determine if the DL message is valid.

Abstract translation: 描述了在服务无线电网络子系统（SRNS）重定位过程期间避免呼叫丢弃的方法和装置。 一方面，该方法可以包括基于SRNS RELOCATION消息来接收SRNS RELOCATION消息并且从第一无线电网络子系统（RNS）发起到第二RNS的切换过程。 该方法可以包括识别下行链路（DL）消息和识别上行链路（UL）消息。 该方法可以包括将DL消息和UL消息保持在无线电资源控制（RRC）层，直到完成切换过程。 在另一方面，SRNS RELOCATION消息可以包括新的FRESH值。 该方法可以包括保留在接收到SRNS RELOCATION之前确定的旧FRESH值。 该方法可以包括将旧FRESH值和新FRESH值应用于DL消息以确定DL消息是否有效。

公开(公告)号：US20160234722A1

公开(公告)日：2016-08-11

申请号：US15022200

申请日：2013-10-25

Applicant: QUALCOMM INCORPORATED

Inventor： Huan XU ,  Tim Tynghuei LIOU ,  Xuepan GUAN

IPC: H04W36/00

CPC classification number: H04W36/0011 ,  H04W36/0055 ,  H04W36/12

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The method comprises: receiving a message at a user equipment (UE) from a source base station connected to a first radio network controller to relocate to a target base station connected to a second network controller different from the first network controller; detecting an unrecoverable Radio Link Control (RLC) error at the UE; and ignoring the RLC unrecoverable error when it occurs after receiving the message to relocate while the UE is still connected to the source base station, before relocation is completed, and proceeding to relocate to the target base station. Various alterations and embodiments are disclosed.

Abstract translation: 提供了一种用于无线通信的方法，装置和计算机程序产品。 该方法包括：从连接到第一无线电网络控制器的源基站在用户设备（UE）处接收消息，以重定位到连接到不同于第一网络控制器的第二网络控制器的目标基站; 检测UE处的不可恢复的无线链路控制（RLC）错误; 并且在重新定位完成之前，在UE仍然连接到源基站并且继续重定位到目标基站之后，在接收到重新定位的消息之后发生RLC不可恢复的错误。 公开了各种改变和实施例。