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Method and system for correcting errors of decoded data by using UMTS (Universal Mobile Telecommunications System) receiver

A receiver and corresponding data technology, applied in digital transmission system, transmission system, error prevention, etc., can solve the problem of signaling reliability, voice quality, uplink air interface capacity, no error correction function, and UMTS wireless receiving channel performance. Issues such as being fully utilized to achieve the effect of increasing uplink capacity, improving voice quality and signaling reliability

Inactive Publication Date: 2014-04-23
SHENZHEN INSTITUTE OF INFORMATION TECHNOLOGY
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AI Technical Summary

Problems solved by technology

When an error occurs in the data, since the error correction function cannot be provided for the data after convolution decoding, the traditional base station receiver only has the error detection function, but not the error correction function, which makes the performance of the UMTS wireless receiving channel not improved. Fully utilized, it has a great impact on signaling reliability, voice quality, and uplink air interface capacity

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  • Method and system for correcting errors of decoded data by using UMTS (Universal Mobile Telecommunications System) receiver
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  • Method and system for correcting errors of decoded data by using UMTS (Universal Mobile Telecommunications System) receiver

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Embodiment Construction

[0033] Using the characteristics of the convolutional decoder, the present invention proposes a method for the UMTS receiver to perform secondary error correction on the decoded data, that is, the single RL (Radio Link) error correction method implemented by the UMTS receiver (base station) (Referred to as "single RL re-error correction" method), this method includes the following 4 parts:

[0034] 1. The realization basis of the "single RL error correction" method: the construction of the "remainder table";

[0035] 2. The realization of "single RL error correction" method: data error correction process after convolutional decoding;

[0036] 3. The implementation effect of the "single RL error correction" method: error correction probability and error correction probability;

[0037] 4. Optimization measures of the "single RL error correction" method: the optimization scheme of the FP frame protocol.

[0038] 1. The realization basis of the "single RL error correction" method:

[0039]...

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Abstract

The invention provides a method and a system for correcting errors of decoded data by using a UMTS (Universal Mobile Telecommunications System) receiver. The method comprises the following steps: A, performing CRC (Cyclic Redundancy Check) on convolutional decoded data; B, retrieving in a remainder table. The method and the system have the beneficial effects that the remainder table is constructed by using two significant features of a convolutional decoding error result, and a corresponding error mode is obtained, so that re-correction of the decoded data is realized, and the problem that the conventional UMTS receiver cannot be used for further correcting the data after a convolutional decoding error is solved. The method provided by the invention can be implemented in the form of hardware as well as the form of a software functional module, and is not limited to the combination of hardware and software of any form. Over 50 percent of error packets in convolutional decoding error data packets can be corrected on average, the voice quality and signaling reliability are improved greatly, and the uplink capacity of the system is increased.

Description

Technical field [0001] The present invention relates to the field of mobile communication, in particular to a method and system for a UMTS receiver to perform error correction on decoded data. Background technique [0002] In the existing 3GPP protocol for mobile communication, for uplink air interface voice and signaling, it is recommended to use convolutional coding with a coding rate of 1 / 3. After the uplink receiver (base station side) performs convolutional decoding, it checks whether the data is correct through CRC. When a data error occurs, for signaling packets, RNC's typical processing method is to discard the wrong packet or try to retransmit and merge; for voice packets, RNC's typical processing method is to discard the wrong packet, and then fill in a silent frame or repeat at the position of the wrong packet The voice of the previous frame. [0003] The mobile communication 3GPP protocol recommends the use of convolutional coding for uplink air interface voice and si...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04B1/06
Inventor 蔡铁伍星
Owner SHENZHEN INSTITUTE OF INFORMATION TECHNOLOGY
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