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Robustness header compression/decompression method for MIPv6

A header and decompression technology, applied in communication between multiple stations, digital transmission system, electrical components, etc., can solve the problems of narrow transmission bandwidth and impact of wireless network

Inactive Publication Date: 2004-06-23
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the transmission bandwidth of the wireless network is relatively narrow, and this burden will have a great impact

Method used

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  • Robustness header compression/decompression method for MIPv6
  • Robustness header compression/decompression method for MIPv6
  • Robustness header compression/decompression method for MIPv6

Examples

Experimental program
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Embodiment Construction

[0066] Embodiment of the present invention is realized under Linux operating system, and main implementation process is as follows:

[0067] Add the software written according to the above method and sub-protocol at the sending and receiving interface of the Linux network link layer as the processing module of the compressor and the decompressor to form the corresponding compressor and decompressor, and group the specific data stream sent out performing compression and simultaneously decompressing the received compressed data flow packet.

[0068] Fig. 7 is an example of the basic flow of the MIPv6 compressor implemented according to the method proposed by the present invention. The compressor first extracts the header of the packet, and then judges whether it is a UDP / MIPv6 packet, and compresses the header of the MIPv6 packet using the UDP transmission protocol. If the packet is the first packet of the data flow, then create a compression association for the flow, send an i...

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PUM

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Abstract

The present invention relates to mobile communication in Internet, and is header compression / decompression method for MIPv6 in emitting data flow in radio mobile environment. On two ends of radio communication link, transmission layer header and network layer header (UDP / IPv6 / MIPv6) used in network transmitting real-time audio and video service are compressed in ROHC regulations. Based on the characteristic that the UDP / IPv6 / MIPv6 header has unchanged domains, intact MIPv6 header group is transmitted in the initial stage of transmitting data flow while selecting corresponding CID; and only changed header domains and CID of subsequent groups are then transmitted after starting compression regulations. The present invention defines the compression / decompression procedure and compressed group format and has simulation shows, header compression rate up to 96 %. The present invention raises greatly the channel utilization of radio links.

Description

Technical field: [0001] The invention relates to the field of Internet mobile communication, and belongs to a header compression / decompression method when sending data streams in a wireless mobile environment according to MIPv6. Background technique: [0002] Robust Header Compression (ROHC for short) is a header compression protocol proposed by the Internet Engineering Task Force (IETF for short). Header compression mechanism for residual bit errors (RFC3095). ROHC proposes different header compression sub-protocols (profiles) for different protocols. The currently standardized sub-protocols include RTP / UDP / IP, UNCOMPRESSED, UDP / IP, and ESP / IP header models. But there is no header model for MIPv6 yet. [0003] Since the IP packets on the Internet need to find their way according to the IP header information during the forwarding process, if real-time audio and other small packet services are transmitted, the header itself will take up a lot of overhead, thus occupying to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/06H04B1/66H04B7/26H04L12/24H04L29/06
Inventor 洪佩琳李津生李蕾王辉
Owner UNIV OF SCI & TECH OF CHINA
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