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Error recovery method and device for IP header compression in mobile communication network

An error recovery and header compression technology, applied in the direction of selection devices, wireless communications, data switching networks, etc., can solve the problems of header decompressor discarding data packets, incomplete decompression of data packets, increasing voice quality degradation, etc., to achieve reduction Effect of small frequency, possibility of reduction, reduction of influence on transmission efficiency

Inactive Publication Date: 2008-10-22
GLOBAL INNOVATION AGGREGATORS LLC
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Problems solved by technology

However, according to the RFC2508 protocol, when the serial number jumps, no matter how much it jumps, the header decompressor thinks that the original data packet cannot be completely decompressed, so it is recommended to discard the data packet
From the above analysis, it can be seen that in the transmission of voice data packets in the wireless communication link, the probability of losing data packets is relatively high, which will cause the header decompressor to frequently discard data packets, thereby increasing the possibility of voice quality degradation due to compression

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  • Error recovery method and device for IP header compression in mobile communication network
  • Error recovery method and device for IP header compression in mobile communication network
  • Error recovery method and device for IP header compression in mobile communication network

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Embodiment Construction

[0035] In the mobile communication system, the wireless link has the characteristics of high bit error rate, limited bandwidth and long loopback time. The occasional loss of a VoIP voice data packet during transmission has little effect on the voice quality; Characteristics of voice packets. Combined with the characteristics of the wireless link and the characteristics of the VoIP voice service, the present invention effectively optimizes the existing IP header compression protocol. Through optimization to improve compression efficiency, it provides a strong guarantee for VoIP voice quality.

[0036] see figure 1 , is the general architecture diagram of VoIP voice communication system based on CDMA 1X packet switching network. Among them, the mobile terminal (MS) 110 establishes a PPP connection with the CDMA 1X packet switching node (PDSN) 120, and they are the sender and receiver of each other, and the VOIP control center 130 is responsible for the session control of the V...

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Abstract

This invention discloses a error recovery method for IP header compression in mobile communication network to boost the data transmission efficiency for emission and receive units, which comprises steps: setting data package serial number increment threshold on receive unit; when receiving voice data package, the header decompressor decides the increment opposite the former data package is less the said threshold; if yes, it means compression communication process is normal; or else, the decompressor sets the conversion environment invalid. There also discloses a opposite device in the invention.

Description

technical field [0001] The invention relates to a VoIP (Voice Over IP) voice service in a mobile communication network, in particular to a method for improving the compression efficiency of an IP (Internet Protocol) header of a data packet transmitted between a transmitting unit and a receiving unit. Background technique [0002] VoIP voice service, also known as IP phone, is a communication technology that transmits voice through an IP network, that is, a voice transmission technology based on an IP network. At present, VoIP has been widely used in wired communication systems, providing users with cheap and high-quality voice services. [0003] With the rapid development of mobile communication technology, several mature GSM / CDMA / WCDMA networks have been introduced and established around the world, and CDMA 1X mobile packet switching networks can already provide users with high-speed data services. It is a current hot topic to provide users with high-quality VoIP voice ser...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04Q7/22H04W28/06
Inventor 赵建国漆宝剑
Owner GLOBAL INNOVATION AGGREGATORS LLC