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Communication system and method utilizing request-reply communication patterns for data compression

A communication system, decompression technology, applied in the direction of digital transmission system, error prevention/detection using return channel, transmission system, etc., can solve problems such as not getting expected results, poor compression performance, etc.

Inactive Publication Date: 2004-02-11
UNWIRED PLANET
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, these methods lead to very poor compression performance for small messages or applications with few repeating strings of messages
In fact, if the message to be compressed is small and / or contains few repeated strings, the use of some standard compression methods may result in compressed packets that are actually larger than the original uncompressed packet, thus failing to achieve the desired result

Method used

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  • Communication system and method utilizing request-reply communication patterns for data compression
  • Communication system and method utilizing request-reply communication patterns for data compression
  • Communication system and method utilizing request-reply communication patterns for data compression

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Embodiment Construction

[0027]The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments of the invention are shown. However, the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will limit the scope of the invention. communicated to those skilled in the art.

[0028] figure 1 An exemplary system for communication according to the present invention is represented. The mobile terminal 110 communicates with the base station 120 over a communication link 115, eg, a wireless link, using a communication protocol. Base station 120 communicates via link 125 with a fixed network 130, such as the PSTN. Fixed network 130 communicates with base station 140 via link 135 . The base station 140 communicates using a communication link 145 with a terminal 150, ...

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Abstract

A method, system, and apparatus for increasing the efficiency and robustness of the compression of a communication protocol for communication between entities (210, 230, 410, 440) over bandwidth limited communication links. The present invention uses the request-reply nature of communication protocols to update compression and decompression dictionaries (220, 240, 420, 430, 450, 460). Each communication entity (210, 230, 410, 440) will update its dictionary (220, 240, 420, 430, 450, 460) with a new message as soon as it is known that the other communication entity has access to teh message. In one aspect of the present invention, an entity (210, 230, 410, 440) updates a compression / decompression dictionary (220, 240, 420, 430, 450, 460) by updating the dictionary with sent messages as soon as a reply arrives from the other entity (210, 230, 410, 440), and by updating the dictionary (220, 240, 420, 430, 450, 460) with received messages immediately. In another aspect of the present invention, received messages are used to update an entity's decompression dictionary (430, 450) and sent messages are used to update an entity's compression dictionary (420, 460).

Description

[0001] Cross References to Related Applications [0002] This application for patent is related to, and claims priority to, the following patent application in its entirety, filed November 16, 2000: U.S. Patent Application No. 60 / 249,642 (Attorney Docket No. 34645-523 USPL); entitled "Static Information US Patent Application No.60 / 249497 (Attorney Docket No. 34645-522USPT) of KnowledgeUsed With Binary Compression Method (knowledge of static information used with binary compression method); entitled "System and Method For Communicating With Temporary Compression Tables ( System and Method for Communication with Temporary Compression Table)" (Attorney Docket No. 34645-524USPT); and entitled "Communication System and Method For Shared Context Compression (communication system and method for shared context compression)" (Attorney Docket No. 34645-525USPT). Background of the invention [0003] technical field [0004] The present invention relates to improved compression for dat...

Claims

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Application Information

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IPC IPC(8): H03M7/30H04L1/16H04W88/18
CPCH04L1/1657H03M7/30H04W88/181H04L1/1671
Inventor H·汗努K·斯万布罗J·克里斯托费尔松
Owner UNWIRED PLANET