Invention Grant
- Patent Title: Method and device for obtaining secondary timing advance
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Application No.: US15299274Application Date: 2016-10-20
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Publication No.: US09967840B2Publication Date: 2018-05-08
- Inventor: Qinghai Zeng , Qufang Huang
- Applicant: Huawei Technologies Co., Ltd.
- Applicant Address: CN Shenzhen
- Assignee: Huawei Technologies Co., Ltd.
- Current Assignee: Huawei Technologies Co., Ltd.
- Current Assignee Address: CN Shenzhen
- Agency: Leydig, Voit & Mayer, Ltd.
- Priority: CN201110084167 20110402
- Main IPC: H04W56/00
- IPC: H04W56/00 ; H04W74/08 ; H04W36/00 ; H04W72/04 ; H04W72/12 ; H04W88/08

Abstract:
Embodiments of the present invention provide a method and a device for obtaining a secondary timing advance. The method includes: after a secondary cell activation command is received or after a secondary cell is activated, if a secondary time alignment timer TAT of the secondary cell does not run, initiating, by a terminal, a random access procedure; and obtaining, by the terminal, the secondary TA according to a TA received in the random access procedure. With the method and the device for obtaining a timing advance according to embodiments of the present invention, a terminal initiates a random access procedure to obtain a secondary timing advance after the terminal receives a secondary cell activation command sent by a base station or after a secondary cell is activated, thereby saving signaling overhead and system resources.
Public/Granted literature
- US20170041893A1 METHOD AND DEVICE FOR OBTAINING SECONDARY TIMING ADVANCE Public/Granted day:2017-02-09
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