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Header compression/decompression device and header compression/decompression method

A header compression and decompression technology, applied in the direction of security communication devices, digital transmission systems, electrical components, etc., can solve the problems of reduced compression ratio and irregular differences in subsequent headers, so as to improve throughput, delete redundancy and irrelevance Sexuality, the effect of reducing consumption

Inactive Publication Date: 2005-03-30
PANASONIC CORP
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Problems solved by technology

However, in a TCP stream, the differences between subsequent headers may become less regular, and the compression ratio may decrease

Method used

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  • Header compression/decompression device and header compression/decompression method
  • Header compression/decompression device and header compression/decompression method
  • Header compression/decompression device and header compression/decompression method

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Embodiment Construction

[0022] Referring now to the drawings, embodiments of the present invention will be explained in detail as follows.

[0023] In the following description, for the purpose of explaining the present invention, specific numbers, periods, structures and other parameters are given in order to provide a thorough understanding of the present invention. The following figures give an example of how the invention can be implemented. Without such details, however, it will be apparent to one of ordinary skill in the art that the invention can be practiced.

[0024] This section will disclose means for controlling network resources at Layer 2 of the OSI (Open Systems Interconnection) model applied to wireless networks. To facilitate an easier understanding of the present invention, the following definitions will be used:

[0025] Protocol Data Unit (PDU)...a single data packet consisting of header information and payload for successful delivery from source to destination

[0026] data st...

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Abstract

A header compression / decompression apparatus that improves the throughput of an overall multilayer protocol stack at a network node. In this apparatus, an encoding section 106 compresses multilayer header information included in a protocol data unit on a multilayer protocol stack 101. A session context ID manager 112 generates a session context ID 401 which is formed by integrating information on compression of multilayer header information by the encoding section 106 and, for example, information for identifying a scheme for compressing multilayer header information.

Description

technical field [0001] The invention relates to a header (header) compression / decompression device and a header compression / decompression method. Background technique [0002] In some existing compressions of Protocol Data Units (PDUs), the compression of the data format in a single layer is of primary importance. One such technique is Internet Protocol (IP) header compression, in which specific protocol layer compression is emphasized. [0003] Compression of header information according to the prior art focuses on the compression of Internet protocol stack addresses. Compressible headers include TCP, UDP, IPV4, and IPV6 basic and extension headers (see, eg, "IP Header Compression" (Network Working Group Request for Comments (Network Working Group Request for Comments) No. 2507, 1999)). For TCP packets, a Van addition mechanism that improves the efficiency of VJ header compression (Van Jacobson compression) over lossy links is also described. For non-TCP packets, compres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M7/30H04L29/06
CPCH04L29/0653H04L69/04H04L69/22H04L29/0604H04L29/06163H04L29/06H04L69/18H04L9/40
Inventor 陈必耀吴振华林威立上丰树
Owner PANASONIC CORP
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