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Method, system and device for decompression information transmission in compression/decompression course

A decompression and message technology, applied in transmission systems, digital transmission systems, electrical components, etc., can solve problems such as lack of definition, and achieve the effect of improving compression ratio and utilization.

Inactive Publication Date: 2008-06-11
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] At present, when the receiving end communication device uses Bytecode to decompress the SIP compressed message, it also needs to obtain the relevant state (Bytecode is written according to different states, and the relevant state must be obtained when decompressing), so as to ensure that the decompression is successful. However, the current standard does not define the process of how to obtain the relevant status

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  • Method, system and device for decompression information transmission in compression/decompression course
  • Method, system and device for decompression information transmission in compression/decompression course
  • Method, system and device for decompression information transmission in compression/decompression course

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Embodiment Construction

[0034] Specific embodiments are given below and are described in further detail with reference to the accompanying drawings.

[0035] In order to enable the communication equipment at the receiving end to obtain the state required for decompressing the SIP compressed message, the present invention resets the message header of the SIP compressed message carrying the Bytecode so that it can carry the state value corresponding to the Bytecode. In this way, it can be guaranteed that the decompression algorithm and state value corresponding to the state value are sent to the receiving end communication device for storage at one time, so that the receiving end communication device can use the stored Bytecode and state value for subsequent SIP compressed messages with corresponding state values The value is decompressed.

[0036] In addition, the message header of the SIP compressed message reset in the embodiment of the present invention also carries feedback mechanism information. ...

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Abstract

The invention discloses a method for transmitting decompression information in the compression / decompression process and a system and a device thereof, wherein the method comprises: a transmitting end device which carries a decompression algorithm and the state values used by the decompression algorithm in an application layer protocol compression message and send the decompression algorithm and a state value used by the decompression algorithm to a receiving end device; the receiving end device stores the state value received form the application layer protocol compression message by the decompression algorithm of the state value. Therefore, the system and method provided by the invention allows the receiving end device to obtain the state needed for decompression of an SIP compression message.

Description

technical field [0001] The invention relates to the compression / decompression technology in the communication system, in particular to a method, system and device for transmitting decompression information during the compression / decompression process. Background technique [0002] Communication devices in a wireless communication system need to exchange messages, and messages may be carried by various protocols, for example, messages may be carried by a Session Initiated Protocol (SIP, Session Initiated Protocol). The SIP protocol is a text-based, simple, easy-to-read, easy-to-extend, end-to-end general packet domain call control protocol. Some features of SIP, such as text-based and self-describing capabilities, will result in relatively large lengths of SIP messages, for example, the length of the initial request (INVITE) message of the multimedia subsystem (IMS) is about 1000 bytes or more. Especially when SIP messages are used as service control messages in the wireless...

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Application Information

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IPC IPC(8): H04L29/06H04L12/56H04L47/30
Inventor 苏曼杰奇
Owner HUAWEI TECH CO LTD