Method and system for error correction of decoded data by umts receiver

A receiver and data technology, applied in the direction of digital transmission system, transmission system, error prevention, etc., can solve the problem of lack of error correction function, signaling reliability, voice quality, uplink air interface capacity, and UMTS wireless receiving channel performance. Give full play to other issues to achieve the effect of improving voice quality and signaling reliability, and improving uplink capacity

Inactive Publication Date: 2017-02-15
SHENZHEN INSTITUTE OF INFORMATION TECHNOLOGY
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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 error correction of decoded data by umts receiver
  • Method and system for error correction of decoded data by umts receiver
  • Method and system for error correction of decoded data by umts receiver

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Embodiment Construction

[0033] Utilizing 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, a single RL (Radio Link) error correction method implemented by the UMTS receiver (base station) (referred to as "single RL re-correction" method), this method includes the following four parts:

[0034] 1. The implementation basis of the "single RL re-correction" method: the construction of the "remainder table";

[0035] 2. Implementation of the "single RL re-error correction" method: the data error correction process after convolutional decoding;

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

[0037] 4. The optimization measures of the "single RL re-correction" method: the optimization scheme of FP frame protocol.

[0038] 1. The implementation basis of the "single RL re-correction" meth...

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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 invention relates to the field of mobile communication, in particular to a method and system for error correction of decoded data by a UMTS receiver. 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 data errors occur, for signaling packets, the typical processing method of RNC is to discard the error packets or try to retransmit them; for voice packets, the typical processing method of RNC is to discard the error packets, and then fill the silence frame or repeat Speech of the previous frame. [0003] The mobile communication 3GPP protocol recommends convolutional coding for uplink air interface voice and signaling. After the uplink receiver (base station side)...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04B1/06
Inventor 伍星蔡铁林徐润曲绪纲
Owner SHENZHEN INSTITUTE OF INFORMATION TECHNOLOGY
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