公开(公告)号：US20150381389A1

公开(公告)日：2015-12-31

申请号：US14768625

申请日：2013-04-02

Applicant: QUALCOMM Incorporated

Inventor： Jianqiang Zhang ,  Jilei Hou ,  Neng Wang ,  Xiaohui Liu ,  Liangming Wu

IPC: H04L25/02 ,  H04L5/14

CPC classification number: H04L25/0204 ,  H04L5/143 ,  H04L25/0222 ,  H04L25/0228

Abstract: Methods, systems, and apparatuses are described for channel estimation in wireless communications. The method, systems, and apparatuses operate in a time-division duplex (TDD) scheme. A first transmission may be received in a first sub-frame of a channel according to the TDD scheme. A time auto-correlation function may be applied to the first transmission to obtain a first auto-correlation sample. At least one characteristic of the channel may be estimated based at least in part on the first auto-correlation sample.

Abstract translation: 描述了用于无线通信中的信道估计的方法，系统和装置。 方法，系统和装置以时分双工（TDD）方案工作。 可以根据TDD方案在信道的第一子帧中接收第一传输。 可以将时间自相关函数应用于第一传输以获得第一自相关样本。 可以至少部分地基于第一自相关样本来估计信道的至少一个特性。

公开(公告)号：US20240007910A1

公开(公告)日：2024-01-04

申请号：US18255624

申请日：2021-01-22

Applicant: QUALCOMM INCORPORATED

Inventor： Xianwei Zhu ,  Jianqiang Zhang ,  Xuqiang Zhang ,  Xiaochen Chen ,  Xiaoning Lu ,  Yifan Du ,  Qiang Deng ,  Jinglei Tian ,  Jie Mao ,  Arvind Vardarajan Santhanam ,  Yong Hou ,  Shan Qing ,  Zhongyue Lou ,  Tom Chin ,  Wei-Jei Song ,  Mingchun Yang ,  Sathish Krishnamoorthy ,  Rajeev Pal

IPC: H04W36/00 ,  H04W36/32

CPC classification number: H04W36/0058 ,  H04W36/32

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may communicate with a base station according to a first radio access technology (RAT) in a first frequency range. The UE may perform measurements on a set of candidate cells of a second RAT or a second frequency range based on a determination for the UE to operate according to the second RAT or the second frequency range. The UE may perform a mobility procedure to establish a connection with a first cell of the set of candidate cells based on a determination that a first value of a first measurement parameter for the first cell satisfies a first threshold, and further based on a comparison of a different, second value of a second measurement parameter for the first cell to a second threshold.

公开(公告)号：US20150139102A1

公开(公告)日：2015-05-21

申请号：US14403809

申请日：2012-07-02

Applicant: QUALCOMM Incorporated

Inventor： Ruiming Zheng ,  Jiming Guo ,  Jianqiang Zhang

IPC: H04L5/00

CPC classification number: H04L5/0057 ,  H04B1/707 ,  H04B2201/70722 ,  H04L5/0055

Abstract: In High-Speed Downlink Packet Access (HSDPA) communications in a Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system (called TD-HSDPA), the payload of two High-Speed Shared Information Channels (HS-SICHs) may be bundled into one HS-SICH channel by reusing the unused uplink synchronization shift (SS) for power control purposes. Thus, the HS-SICH spreading factor (SF) 16 code channel overhead may be reduced by 50%.

Abstract translation: 在时分同步码分多址（TD-SCDMA）系统（称为TD-HSDPA）中的高速下行链路分组接入（HSDPA）通信中，两个高速共享信道（HS-SICH）的有效载荷可以是 通过重新使用未使用的上行链路同步移位（SS）来进行功率控制，将其捆绑成一个HS-SICH信道。 因此，HS-SICH扩展因子（SF）16码信道开销可以减少50％。