Invention Grant
- Patent Title: Method and apparatus for efficient handover in LTE
- Patent Title (中): LTE中高效切换的方法和装置
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Application No.: US12433802Application Date: 2009-04-30
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Publication No.: US08509180B2Publication Date: 2013-08-13
- Inventor: Shailesh Maheshwari , Sai Yiu Duncan Ho , Peter A. Barany
- Applicant: Shailesh Maheshwari , Sai Yiu Duncan Ho , Peter A. Barany
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Milan Patel
- Main IPC: H04W4/00
- IPC: H04W4/00

Abstract:
An efficient use of downlink (DL) air-interface bandwidth during handoff of user equipment from a source cell to a target is provided. In conjunction with a handoff message to ensure receipt, expedited status exchanges are provided so that initial communications do not require a subsequent retransmission of duplicate data. A method for transmitting a dedicated Random Access Channel (RACH) preamble and cell information, receiving a RACH from the user equipment to start communication, and transmitting a handover message and a radio link control (RLC) status message or an UL grant in response to receiving the RACH is provided. Also, a method for receiving a handover message and target cell information from a source cell to start handover negotiations, initiating communication with target cell using the target cell information, receiving a handover message and (RLC) status message, and using the received information to approximate status reporting is provided.
Public/Granted literature
- US20090286541A1 METHOD AND APPARATUS FOR EFFICIENT HANDOVER IN LTE Public/Granted day:2009-11-19
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