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Data packet decompression method and device

A data packet and decompression technology, applied in synchronization devices, transmission data organization to avoid errors, adjustment of transmission methods, etc., can solve problems such as decompression failure and voice quality deterioration, and achieve the effect of reducing decompression failure and improving voice quality.

Active Publication Date: 2020-06-23
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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  • Data packet decompression method and device
  • Data packet decompression method and device
  • Data packet decompression method and device

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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 embodiment of the invention discloses a data packet decompression method and device. When the packet header of the current data packet fails to be decompressed; whether packet header decompressionfailure occurs in a conversion process between a call period and a silent period or not is determined; and when packet header decompression fails and occurs in a conversion process between a call period and a silent period, obtaining a plurality of timestamps to be verified according to the message serial number difference value, the timestamp step length of the data packet decompression contextand the timestamp of the latest correctly decompressed data packet, and updating the context by using the correct timestamp of the CRC in the plurality of timestamps to be verified. According to the embodiment of the invention, decompression failure caused by key data packet loss or compatibility problem of a compression coding mode can be reduced, so that continuous packet loss or repeated packetloss caused by decompression failure is avoided, and the voice quality is ensured.

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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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
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