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Optimizing in-order delivery of data packets during wireless communication handover

A handover process, a technology of a wireless communication device, applied in the field of service data units

Active Publication Date: 2010-07-21
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At this point, data packets may be transmitted out of order from the mobile device to the base station, because the HARQ process retransmits unsuccessful packets while it continues to generate new packets

Method used

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  • Optimizing in-order delivery of data packets during wireless communication handover
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  • Optimizing in-order delivery of data packets during wireless communication handover

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Embodiment Construction

[0030] Various embodiments are now described with reference to the drawings, wherein like reference numerals are used to refer to like elements throughout. 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 embodiments. It may be evident, however, that these embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to describe one or more embodiments.

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

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PUM

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Abstract

Systems and methodologies are described that facilitate processing service data units (SDU) in-order during communication handover in wireless networks. In particular, for mobile devices using re-transmission schemes, SDUs can be processed in-order by indicating to a target base station an index of a last SDU received in-order before handing off communication to the target base station. Additionally, SDUs received subsequent to one or more non-acknowledged SDUs can be forwarded to the target base station. Utilizing this information, the target base station can determine one or more SDUs the mobile device is preparing to re-transmit and can wait for this SDU before processing subsequently received SDUs. Also, a timer can be utilized to end a waiting period for the SDU.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Patent Application No. 60 / 955,607, filed August 13, 2007, entitled "METHOD ANDAPPARATUS FOR OPTIMIZING IN-ORDER DELIVERY OF UPLINKPACKETS DURING HANDOFF IN COMMUNICATION SYSTEMS." The foregoing application is hereby incorporated by reference in its entirety. technical field [0003] The following description relates generally to wireless communications and, more specifically, to the delivery of sequential service data units (SDUs) to wireless communications devices. Background technique [0004] Wireless communication systems are widely deployed to provide various communication content such as voice, data, and so on. A typical wireless communication system may be a multiple-access system capable of supporting communication with multiple users by sharing available system resources (such as bandwidth, transmission power...). Examples of such multiple-access systems may...

Claims

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Application Information

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IPC IPC(8): H04L1/18H04W36/00H04W36/02
CPCH04L1/1841H04W36/023H04W36/02H04W28/04H04L69/321H04L47/34H04L1/18H04W36/0235
Inventor A·梅朗
Owner QUALCOMM INC