Invention Grant
US08526420B2 Method and apparatus for autonomous uplink timing advance maintenance
有权
用于自主上行链路定时提前维护的方法和装置
- Patent Title: Method and apparatus for autonomous uplink timing advance maintenance
- Patent Title (中): 用于自主上行链路定时提前维护的方法和装置
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Application No.: US12837813Application Date: 2010-07-16
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Publication No.: US08526420B2Publication Date: 2013-09-03
- Inventor: Jianfeng Weng , Mark Earnshaw
- Applicant: Jianfeng Weng , Mark Earnshaw
- Applicant Address: CA Waterloo
- Assignee: Blackberry Limited
- Current Assignee: Blackberry Limited
- Current Assignee Address: CA Waterloo
- Main IPC: H04J3/06
- IPC: H04J3/06

Abstract:
According to some embodiments, a mobile device may calculate adjustments of a timing advance based on a determined relative downlink timing change. Adjustments of the timing advance may be made toward a target timing advance in accordance with an adjustment parameter. The adjustment parameter may be adapted based on a received timing advance command and at least one of: a calculated adjustment of the timing advance; and a difference between the target timing advance and the timing advance. In another aspect, self-adjustment of a timing advance performed by a mobile device may be configured based on a property of a communication channel between the mobile device and a base station. In another aspect, self-adjustment of a timing advance performed by a mobile device may be configured based on timing advance commands received from a base station.
Public/Granted literature
- US20120014371A1 METHOD AND APPARATUS FOR AUTONOMOUS UPLINK TIMING ADVANCE MAINTENANCE Public/Granted day:2012-01-19
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