Maintaining data connectivity for handoffs between compression-enabled and compression-disabled communication systems

A connectivity and data technology, applied in the field of communication systems, can solve problems such as data connectivity delays, interruptions, and non-optimal resynchronization

Inactive Publication Date: 2006-12-13
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Resynchronization for all such protocols is sub-optimal as it introduces unnecessary delay in data connectivity and can potentially interrupt higher layer protocol sessions (e.g. TCP connections)

Method used

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  • Maintaining data connectivity for handoffs between compression-enabled and compression-disabled communication systems
  • Maintaining data connectivity for handoffs between compression-enabled and compression-disabled communication systems
  • Maintaining data connectivity for handoffs between compression-enabled and compression-disabled communication systems

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Embodiment Construction

[0016] Since the embodiments are directed to Mobile IP technology, the terminology of RFC2002 will also be used immediately. The protocol promulgated in this document enables a mobile, wireless communications device to change its point of attachment to an Internet network without changing the device's IP address. In other words, RFC 2002 sets forth a registration scheme that notifies a home agent of the location of a wireless communication device so that the home agent can route packets through the foreign agent. A "home agent" is an infrastructure element that processes IP packets at the access terminal's home system. A "foreign agent" is an infrastructure element that provides services to access terminals on the visited system. An access terminal is also referred to as a "mobile node." The functions of a foreign agent and / or home agent can be performed by a base station controller (BSC) or packet data serving node in a visited network or a BSC in the home network. Authent...

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Abstract

Methods and apparatus are presented for enabling data connectivity when a handoff occurs between one communication network and another communication network, wherein the communication networks belong to different air interface standards. The mobile station triggers a Compression Control Protocol (CCP) request message to a tethered device if the mobile station determines that a new PDSN is not enabled to perform the CCP protocol. The tethered device then responds with a CCP request message with or without new negotiation parameters. The mobile station forwards the CCP request message to the new PDSN. Since the new PDSN is not enabled with CCP, the new PDSN responds with a CCP rejection message. The rejection message is passed from the mobile station back to the tethered device. The tethered device then sends uncompressed data packets to the PDSN.

Description

[0001] Priority claims under 35 U.S.C. § 119 [0002] This patent application claims priority based on Provisional Application Serial No. 60 / 508,385, filed October 3, 2003, entitled "Maintaining Data Connectivity for Handover Between Disparate Communications," which assigned to the present assignee and is hereby expressly incorporated herein by reference. technical field [0003] The present invention relates generally to communication systems, and more particularly to packetized data transmission over wireless communication systems. Background technique [0004] The field of wireless communications has many applications including, for example, cordless telephones, paging, wireless area loops, personal digital assistants (PDAs), Internet telephony, and satellite communication systems. A particularly important application is cellular telephone systems for mobile users. The term "cellular" system is used herein to encompass both cellular and Personal Communications Services ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/18H04LH04L12/66H04W28/16H04W36/14H04W80/02
CPCH04W28/16H04W36/14H04W80/02
Inventor 杰弗里·A·戴克马尔切洛·利奥伊保罗·麦卡利斯特
Owner QUALCOMM INC
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