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Method and device for decompressing data packets

A data packet and decompression technology, applied in synchronization devices, transmission data organization to avoid errors, digital transmission systems, etc., can solve problems such as decompression failure, voice quality deterioration, etc., to reduce compatibility problems, avoid continuous packet loss or Repeated packet loss to ensure the effect of voice quality

Active Publication Date: 2022-03-04
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Subsequent compressed packets (such as type 0 packets) entering a new call period or silent period will fail to decompress continuously, which will cause voice quality to deteriorate

Method used

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  • Method and device for decompressing data packets
  • Method and device for decompressing data packets
  • Method and device for decompressing data packets

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Embodiment Construction

[0051] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0052] The "plurality" referred to herein refers to two or more than two. "And / or" describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and / or B may indicate: A exists alone, A and B exist simultaneously, and B exists independently. The character " / " generally indicates that the contextual objects are an "or" relationship.

[0053]The technical solutions of the embodiments of the present application can be applied to various communication systems for data processing, such as: code division multiple access (code division multiple access, CDMA), time division multiple access (time division multiple access, TDMA), frequency division multiple access ( frequency division multiple access, FDMA), or...

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PUM

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Abstract

The data packet decompression method and device of the embodiment of the present application, when the header decompression of the current data packet fails, by determining whether the packet header decompression failure occurs during the conversion process between the talk period and the silent period, when the packet header decompression failure occurs during the call Period and silent period conversion process, according to the message serial number difference, the time stamp step size of the data packet decompression context and the time stamp of the latest correctly decompressed data packet to obtain multiple time stamps to be verified, using multiple time stamps to be verified Verify that the CRC in the timestamp is correct for the timestamp update context. The embodiment of the present application can reduce the decompression failure caused by the loss of key data packets or the compatibility problem of the compression coding mode, thereby avoiding the continuous packet loss or repeated packet loss caused by the decompression failure, and ensuring the voice quality.

Description

technical field [0001] The embodiments of the present application relate to the technical field of communications, in particular, a method and device for decompressing data packets. Background technique [0002] Robust header compression (Robust Header Compression, RoHC) is an efficient header compression technology, which is applied to the packet data convergence protocol (Packet Data Convergence Protocol, PDCP) layer in the link layer in wireless communication, which can greatly improve the air interface transmission efficiency , save air interface resources, improve cell edge coverage and system capacity. [0003] The compression end compresses the header of the original message at the PDCP layer, and the compressed message passes through the radio link control (Radio Link Control, RLC) layer, media access control (Media Access Control, MAC) layer and physical layer (PHY) After relevant processing, it is transmitted to the receiving end through the air interface. After r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/02H04W28/06H04W56/00H04L1/00
CPCH04W28/0205H04W28/065H04W56/00H04L1/0006H04L1/0061H04L1/0079H04W28/02H04W28/06H04L1/00
Inventor 居双双
Owner HUAWEI TECH CO LTD