Error checking method and device for voice data packet, storage medium and terminal
A voice data and data packet technology, applied in data switching networks, error prevention, digital transmission systems, etc., can solve the problems of low BEP accuracy, affecting BFI accuracy, call interruption, etc., and achieve the effect of improving accuracy.
Active Publication Date: 2021-02-12
SPREADTRUM COMM (SHANGHAI) CO LTD
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Problems solved by technology
[0004] However, the accuracy of determining the BEP in the prior art is low, which will affect the accuracy of the error detection of the voice data packet, and then affect the accuracy of determining the BFI
For example, in the case of intermittent transmission, if the BEP value calculated for multiple voice data packets continues to be too large, it is easy to misjudge that the channel has no valid voice data, and even release the channel, resulting in interruption of the call
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[0041] In the existing voice service processing technology, the receiving end uses CRC and BFI to measure the transmission quality of the voice channel, wherein BFI is determined by BEP, and the accuracy of determining BEP needs to be improved, which affects the error detection of the voice data packet. Accuracy, which in turn affects the accurate determination of BFI.
[0042]Specifically, in an existing BEP determination method, for a received voice data packet, the BEP of each soft bit in the voice data packet is firstly obtained by looking up a table. There are 25 kinds of BEPs in the BEP table, and the value range of soft bits is 0-127, a total of 128 kinds. An existing mapping relationship between BEP and soft bits is: soft bits with a value of 0-23 and the first 24 BEPs are mapped one by one, and the soft bits with a value of 24 to 127 are mapped to the last BEP in the BEP table.
[0043] Further, according to the BEP of each soft bit, calculate the BEP average value o...
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An error checking method and device, a storage medium, and a terminal for a voice data packet, the method comprising the following steps: receiving a voice data packet; determining the number of bit errors in the voice data packet; according to the number of bit errors and the The total number of bits of the voice data packet, determine the bit error probability of the voice data packet; compare the bit error probability with a preset threshold, if the bit error probability is greater than the preset threshold, then judge the The voice data packet is an error data packet. The solution of the present invention can more accurately determine the bit error probability of the voice data packet, and then judge whether the voice data packet is an error data packet according to the bit error probability, thereby improving the accuracy of the error detection of the voice data packet, and then Improve the accurate judgment of BFI.
Description
technical field [0001] The invention relates to the field of communication technology, in particular to an error checking method and device, a storage medium, and a terminal for voice data packets. Background technique [0002] In the existing voice service processing technology, for normal voice transmission and signaling transmission, the receiving end usually adopts cyclic redundancy check (Cyclic Redundancy Check, CRC) to check the voice and signaling errors in the transmission process; During the gap period, when the transmitting end performs a discrete transmission (DTX) operation, the receiving end may also use a bad frame indication (Bad Frame Indication, BFI) to measure the transmission quality of the voice channel. [0003] Specifically, the receiving end decodes and corrects each received voice data packet, and then performs a CRC check on the error-corrected data. If the check result shows that the data after error correction is wrong, for example, the CRC check ...
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IPC IPC(8): H04L12/26H04L1/20H04L1/00
CPCH04L1/0045H04L1/0061H04L1/201H04L43/0823H04L43/0847
Inventor 刘惠
Owner SPREADTRUM COMM (SHANGHAI) CO LTD