Method and equipment for improving performance of PDCP (Packet Data Convergence Protocol) ROHC (Robust Header Compression) algorithm

Abstract

The embodiment of the invention provides a method for improving the performance of a PDCP (Packet Data Convergence Protocol) ROHC (Robust Header Compression) algorithm, which comprises the following steps: an uncompressing end monitors and makes statistics on channel condition information; and when monitoring that the channel condition exceeds a preset threshold value, the uncompressing end carries out state transition and mode switching and sends ACK (Acknowledgment) or NACK(Negative Acknowledgement) to the compressing end of equipment which receives and transmits an ROHC compressed data packet to excite the compressing end to carry out the state transition and mode switching. The embodiment of the invention also provides equipment for improving the performance of the PDCP (Packet Data Convergence Protocol) robust header compression algorithm. In the technical scheme of the embodiment of the invention, by introducing in a new standard for judging the change of the channel condition, the sensitivity and the accuracy of ROHC are improved, the respective working state and operation mode of a compressing-state machine and an uncompressing state machine can be adjusted rapidly, thereby timely and effectively preventing the error diffusion and packet loss spread of contiguous packet data.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular, the present invention relates to a method and equipment for improving the performance of PDCP robust header compression algorithm. Background technique [0002] Mobile and broadband have become the development direction of modern communication technology. 3GPP (3rd Generation Partnership Project) is committed to the evolution of LTE (Long Term Evolution, long-term evolution) system as a 3G system. The goal is to develop 3GPP wireless access technology towards Evolution for high data rate, low latency and optimized packet data applications. [0003] The sublayer PDCP (Packet Data Convergence Protocol) in the L2 layer of the LTE system adopts a header compression technology ROHC (Robust header Compression, robust header compression) algorithm, which is specifically given by the file RFC3095. The ROHC header compression proposed in the RFC3095 protocol can be described as ...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to at least solve one of the above-mentioned technical defects, especially solve the problem that ROHC only relies on the single means of ROHC decompression end CRC check to carry out state migration and mode conversion step by step, by introducing a new judgment channel Standards for condition changes, improve the sensitivity and accuracy of ROHC, quickly adjust the working status and operation mode of the compression and decompression state machines, and timely and effectively prevent the error diffusion and packet loss propagation of adjacent packet data

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