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Methods and apparatus for in-order delivery of data packets during handoff

A technology for data grouping and receiving data, which is applied in digital transmission systems, error prevention, semiconductor devices, etc., and can solve problems such as disadvantages, packet delay or discarding, and impact

Active Publication Date: 2010-06-23
QUALCOMM INC
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0009] One problem associated with handover is that L2 data packets may be delivered and / or received out of order at the application layer
If the handover is not well managed, packets from the source eBS may be delayed or dropped, causing communication to stop or not being able to reassemble full IP packets separately, thus resulting in IP packet loss
[0010] Another problem associated with handover is that L3 data packets may be delivered and / or received out of order at the application layer
At the application layer, out-of-order delivery of packets can adversely affect specific applications
For example, an application implementing TCP may be negatively affected because out-of-order packet delivery may cause a TCP receiver to generate duplicate acknowledgment (ACK) messages, and cause TCP to react by reducing its congestion window

Method used

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  • Methods and apparatus for in-order delivery of data packets during handoff
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  • Methods and apparatus for in-order delivery of data packets during handoff

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Embodiment Construction

[0056] Various aspects are now described with reference to the figures. 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 these aspects may be practiced without these specific details.

[0057] Additionally, various aspects of the disclosure are described below. It should be appreciated that the teachings herein can be embodied in a variety of forms and that any specific structure and / or function disclosed herein is merely illustrative. Based on the teachings herein one skilled in the art should appreciate that an aspect disclosed herein may be implemented independently of any other aspects and that two or more aspects may be combined in various ways. For example, an apparatus may be implemented or a method practiced using any number of the aspects set forth herein. Additionally, such an apparatus may be implemented or such a...

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Abstract

Methods, apparatus, systems and computer program products are defined that provide for in-order deliver of data packets during hand-off. The aspects provide for in-order delivery at Forward Link Serving eBS / Data Attachment Point (FLSE / DAP) switch and Reverse Link Serving eBS / Data Attachment Point (RLSE / DAP) switch. As such, present aspects provide for significant improvement in the throughput of applications, such as applications relying on Transmission Control Protocol (TCP), during handoff, in such networks as Ultra Mobile Broadband (UMB) and the like.

Description

[0001] Claiming Priority Based on 35 U.S.C. §119 [0002] This patent application claims Provisional Application No. 60 / 951,176, filed July 20, 2007, entitled "METHOD, APPARATUSAND SYSTEM FOR PRESERVING PACKET ORDER DURINGHAND-OFF," filed September 11, 2007, entitled "IN-ORDER DELIVERY ALGORITHMS FOR FLSA / DAP SWITCH INUMB", Provisional Application No. 60 / 972,722 filed September 14, 2007 entitled "IN-ORDERDELIVERY ALGORITHMS FOR FLSA / DAP SWITCH IN UMB", and Priority to Provisional Application No. 60 / 973,095, filed September 17, 2007, entitled "METHOD ANDAPPARATUS FOR IN-ORDER DELIVERY OF PACKETS AT REVERSELINK HANDOFF." All of these provisional applications have been assigned to the assignee of the present application and are hereby expressly incorporated by reference. technical field [0003] The described aspects relate to wireless communication networks, and more particularly, to apparatus, methods and systems for providing in-order delivery of data packets in wireless comm...

Claims

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Application Information

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IPC IPC(8): H04W36/02
CPCH04L1/1887H04L29/06095H04W36/02H01L2924/00013H04L1/187H04L69/16H01L2224/29099H04W36/08
Inventor P·A·阿加什N·J·帕雷克P·丁娜功西素帕普D·W·吉利斯F·乌卢皮纳尔R·卡普尔R·普拉卡什A·阿格拉瓦尔
Owner QUALCOMM INC
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