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A method and apparatus for efficient handover in lte

A device and handover technology, applied in connection management, digital transmission systems, error prevention, etc., and can solve problems such as consuming DL resources

Active Publication Date: 2014-06-18
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The network node (target cell) may unnecessarily consume DL resources when sending unreceived SDUs to the UE during handover
Additionally, status messages sent from the target cell to the UE after handover may not be received by the UE, which may have an enhanced likelihood of successful communication

Method used

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  • A method and apparatus for efficient handover in lte
  • A method and apparatus for efficient handover in lte
  • A method and apparatus for efficient handover in lte

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Embodiment Construction

[0030] Various aspects are now described with reference to the drawings. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more aspects. It may be evident, however, that the various aspects may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing these aspects.

[0031] As used in this application, the terms "component," "module," "system" and the like are intended to refer to a computer-related entity, be it hardware, a combination of hardware and software, software, or software in execution. For example, a component can be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and / or a computer. For example, an application running on a server and the server can both be a component...

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PUM

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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.

Description

[0001] cross reference [0002] This application claims the 61st article entitled "AVOIDANCE OR REDUCTION OF TRANSMISSION OFDUPLICATE PDCP PDUs AFTER HANDOVER IN LTE" filed on May 2, 2008 / 049,846, assigned to the assignee of the present invention and incorporated herein by reference in its entirety. technical field [0003] The present invention relates to wireless communication systems, and in particular to systems in which a wireless communication device must be wirelessly handed over between a source cell and a target cell of a communication network. Background technique [0004] Evolved communication systems, such as 3GPP Long Term Evolution (LTE), address the need for increased mobility of communication devices, often referred to as user equipment (UE), within a communication network served by an increasing number of The overlapping cell configuration of other UEs. Maintaining continuity of service often entails handover between the source cell with which the UE is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/08
CPCH04W74/08H04W36/08H04L1/1848H04W76/02H04L1/1809H04W76/10H04W36/02
Inventor 沙伊莱什·马赫什瓦里萨伊·遥·邓肯·霍彼得·A·巴拉尼
Owner QUALCOMM INC