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Method for reusing contexts of robust header compression system for mobile communication system

A mobile communication system and header compression technology, applied in wireless communication, network traffic/resource management, electrical components, etc., can solve the problem of no specified context reuse implementation scheme, affecting compression efficiency, jitter, etc., to solve the problem of limited CID resources, Improve compression efficiency and meet business needs

Active Publication Date: 2014-09-17
WUHAN POST & TELECOMM RES INST CO LTD
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Problems solved by technology

However, the RFC4815 protocol does not specify a specific implementation scheme for context reuse. The currently announced implementation scheme is to reuse the context that has not been used for the longest time, but this scheme is likely to cause subsequent new data streams to reuse the context in use (here The data flow corresponding to the context has not ended, and there are still subsequent compressed packets arriving), so there is a high probability that it will cause jitter, affect the compression efficiency, and cause system performance to decrease

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  • Method for reusing contexts of robust header compression system for mobile communication system
  • Method for reusing contexts of robust header compression system for mobile communication system
  • Method for reusing contexts of robust header compression system for mobile communication system

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Embodiment Construction

[0020] The present invention provides a context reuse implementation scheme based on Qos services. The basic design idea is: divide different CID reuse priority queues, and then perform CID reuse in order of priority from low to high; The application uses the FIFO algorithm to implement CID reuse; under the premise of ensuring the Qos of different LTE services, it is also necessary to consider the fairness strategy to ensure that each service application under a certain priority will have the opportunity to obtain the CID.

[0021] For specific implementation, refer to the software technology to realize the automatic operation process, such as figure 2 As shown, the process of the embodiment includes the following steps:

[0022] Step 1, enable ROHC header compression.

[0023] The ROHC header compression function is enabled, and subsequent data packets start to be compressed.

[0024] Step 2, when a new data flow arrives, judge the priority of the new data flow and divide ...

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Abstract

The invention provides a method for reusing contexts of a robust header compression system for a mobile communication system, wherein when new data stream reaches, and CID (Context Identification) is completely allocated, the data stream with the allocated CID is checked whether to include the data stream of a lower priority sequence or not; if such data stream exists, the new data stream occupies the corresponding CID, otherwise the new data stream is listed into a waiting sequence; next, the situation that whether any CID is released or not is judged; if so, the data stream with highest priority in the waiting sequence is selected to occupy the released CID; and the situation that whether any new data stream reaches or not is judged, and the processing is performed circularly. With the adoption of the technical scheme provided by the invention, the compression efficiency can be improved greatly, and meanwhile, the fairness is considered, so that various service demands of users are met.

Description

technical field [0001] The present invention relates to the field of mobile communication technology, in particular to a method for realizing context reuse in robust header compression systems of mobile communication systems (including but not limited to WCDMA, CDMA2000, TD SCDMA, TDD-LTE, and FDD-LTE) . Background technique [0002] ROHC (Robust Header Compression, robust header compression technology) protocol was originally proposed by the IETF ROHC working group to compress WLAN (wireless local area network) IP packets. Later, 3GPP adopted it as a 3G and LTE mobile communication technology standard and applied it in its PDCP sub- Layer (Packet Data Convergence Protocol, Packet Data Convergence Protocol Layer), which compresses the header of the data. The ROHC algorithm is suitable for wireless links with high bit error rate and long round-trip delay, and has good compression rate and robustness. ROHC mainly compresses the header of the data stream, and its functional e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/06
Inventor 徐海鑫张利达
Owner WUHAN POST & TELECOMM RES INST CO LTD
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