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Method and device for determining inband signalling decoding mode

A decoding mode and in-band signaling technology, which can be applied to devices dedicated to receivers, adjusting source coding, wireless communication, etc., to solve the problems of low in-band signaling decoding accuracy and improve the accuracy. , the effect of accurate data

Inactive Publication Date: 2013-03-27
HUAWEI DEVICE CO LTD
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  • Claims
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Problems solved by technology

[0007] In the process of implementing the above in-band signaling decoding, the inventors found that at least the following problems exist in the prior art: the current in-band signaling data has the characteristics of infrequent changes, and when determining the in-band signaling decoding mode, Only use the encoded bit sent and the decoded bit of the received signal to correlate to determine the mode of in-band signaling decoding, so that the accuracy of in-band signaling decoding is relatively low

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  • Method and device for determining inband signalling decoding mode
  • Method and device for determining inband signalling decoding mode

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Embodiment 1

[0025] An embodiment of the present invention provides a method for determining an in-band signaling decoding mode, such as figure 1 shown, including:

[0026] 101. Calculate probabilities of various decoding modes of the in-band signaling of the received signal at a predetermined moment by using a posteriori probability algorithm.

[0027] Wherein, the calculation of the probability of various decoding modes of the in-band signaling of the received signal at a predetermined time by using the posterior probability algorithm specifically includes:

[0028] First, the probability formula (1.1) for calculating the in-band signaling decoding mode of the received signal at a predetermined time is obtained according to the principle of posterior probability:

[0029] p ( st k = m | r k ) = ...

Embodiment 2

[0049] An embodiment of the present invention provides a method for determining an in-band signaling decoding mode, such as image 3 shown, including:

[0050] Firstly, the probability of various decoding modes of the in-band signaling of the received signal at the predetermined time is calculated by using the posterior probability algorithm. After obtaining the probabilities of various decoding modes of the in-band signaling of the received signal at the predetermined time, the decoded In the probability of the coding mode, the decoding mode with the largest probability value is selected as the decoding mode of the in-band signaling of the received signal at the predetermined time, which specifically includes the following steps:

[0051] 301. Obtain the probability formula (1.1) for calculating the in-band signaling decoding mode of the received signal at a predetermined time according to the principle of posterior probability:

[0052] p ( ...

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Abstract

In the field of communications, a method and a device for determining a decoding mode of in-band signaling are provided, which improve accuracy of in-band signaling decoding. The method includes: calculating a probability of each decoding mode of in-band signaling of a received signal at a predetermined moment by using a posterior probability algorithm; and from the calculated probabilities of the decoding modes, selecting a decoding mode having a maximum probability value as a decoding mode of the in-band signaling of the received signal at the predetermined moment. The method and the device are mainly used in a process for determining a decoding mode of in-band signaling in a speech frame transmission process.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and device for determining an in-band signaling decoding mode. Background technique [0002] AMR (Adaptive Multi-Rate, Adaptive Multi-Rate) speech coder adaptive switching technology according to channel conditions includes two aspects, namely: channel mode adaptation, source coding mode and channel coding mode adaptation. [0003] The adaptive switching of the channel mode is relatively stable, and it is only switched every time a call connection is established with the system or a new cell is entered. That is, each time a call connection is established with the system or a new cell is entered, the network assigns a fixed channel rate mode to both communication parties according to the channel conditions, either a full rate channel mode or a half rate channel mode. Once the channel mode is determined, there will be no switching during the call, and then the source cod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04W88/18
CPCH04L1/0038H04L1/0014H04L1/0046H04W28/04
Inventor 彭念毛聪莉陈志群陈念
Owner HUAWEI DEVICE CO LTD
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