Method and device for processing error codes of cross-protocol layer

Abstract

The invention discloses a method and a device for processing error codes of a cross-protocol layer, which realizes the uploading and the accurate positioning of the error codes on each protocol layer.The method for processing error codes of a cross-protocol layer comprises the following steps: detecting errors of the error codes on the link layer and transmitting a load into an IP protocol layerfor processing no matter whether the error codes appear or not; receiving a UDP packet uploaded by the IP protocol layer on an RTP layer, then carrying out combined error code detection to a pseudo IPheader, a UDP packet header and an RTP packet header and judging whether the error codes exist in the UDP packet header and the RTP packet header; putting a corresponding RTP load into an RTP reset buffer of a corresponding UDP port by the UDP packet through a destination UDP port address if no error code is discovered during the combined error code detection and discarding the UDP packet if theerror code is discovered during the combined error code detection; carrying out reset buffering to the input RTP packet on the RTP layer; deinterlacing the output of the RTP reset buffer on the RTP layer, and further carrying out RS decoding for error code correction. The invention is applied in the field of mobile communication.

Description

technical field [0001] The invention relates to a code error processing method and device in mobile communication, in particular to a method and device for processing code errors across protocol layers. Background technique [0002] How to reduce the impact of bit errors and packet loss in wireless channel transmission on services is an important issue. Usually, there are corresponding error detection and error correction methods at each protocol layer. For example, the physical layer can use TURBOCODE for forward error correction. The link layer can use methods such as CRC for error detection and so on. However, in order to achieve a sufficiently low BER (BIT ERROR RATE, bit error rate), it is usually necessary to perform further error correction processing on the upper layer protocol, typically the raptor designed by Digital fountain, which can implement further FEC error correction at the application layer. Code protection, but its algorithm processing is more complica...

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Problems solved by technology

However, in order to achieve a sufficiently low BER (BIT ERROR RATE, bit error rate), it is usually necessary to perform further error correction processing on the upper layer protocol, typically the raptor designed by Digital fountain, which can implement further FEC error correction at the application layer. Code protection, but its algorithm processing is more complicated

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