Invention Grant
- Patent Title: Time-alignment at handover
- Patent Title (中): 切换时间对齐
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Application No.: US12665979Application Date: 2008-01-03
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Publication No.: US08774126B2Publication Date: 2014-07-08
- Inventor: Muhammad Ali Kazmi
- Applicant: Muhammad Ali Kazmi
- Applicant Address: SE Stockholm
- Assignee: Telefonaktiebolaget L M Ericsson (Publ)
- Current Assignee: Telefonaktiebolaget L M Ericsson (Publ)
- Current Assignee Address: SE Stockholm
- Agency: Coats & Bennett, P.L.L.C.
- International Application: PCT/SE2008/050007 WO 20080103
- International Announcement: WO2009/002248 WO 20081231
- Main IPC: H04W4/00
- IPC: H04W4/00

Abstract:
Time-aligned handover for a mobile device is described herein. The time-aligned handover is achieved by determining a time difference between serving and target cells and determining a target propagation delay based on the time difference. In some cases, the target propagation delay may further be determined based on a serving propagation delay between the serving cell and the mobile device. A target transmission time is calculated based on the target propagation delay. The mobile device uses the target transmission time to time align transmissions to the target cell during handover.
Public/Granted literature
- US20110007707A1 Time-Alignment at Handover Public/Granted day:2011-01-13
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