WO2014101212A1

WO2014101212A1 - Multi-rate voice service channel encoding method, channel decoding method and device

Info

Publication number: WO2014101212A1
Application number: PCT/CN2012/088097
Authority: WO
Inventors: 吴可镝; 唐欣; 魏岳军; 李明
Original assignee: 华为技术有限公司
Priority date: 2012-12-31
Filing date: 2012-12-31
Publication date: 2014-07-03
Also published as: CN103384973A; CN103384973B

Abstract

Provided in an embodiment of the present invention are a multi-rate voice service channel encoding method, channel decoding method and device, comprising: determining the rate mode of a voice service, the voice service containing at least two substreams, and the rate modes and the channel encoding modes of the at least two sub-streams having a corresponding relationship therebetween; determining a channel encoding mode for the at least two substreams according to the corresponding relationship between the rate mode of the voice service and the channel encoding modes of the at least two substreams, the at least two substreams of each rate mode and the channel encoding modes having a corresponding relationship therebetween; and employing the selected channel encoding mode to conduct channel encoding on the at least two substreams. A corresponding channel encoding mode can be selected for the voice services having different rate modes, thus improving the encoding gain of the voice services having different rate modes, and optimizing channel transmission performance.

Description

Channel coding method, channel decoding method and device for multi-rate voice service

Embodiments of the present invention relate to communication systems, and more particularly to a channel coding method, a channel decoding method, and apparatus for multi-rate voice services. Background technique

Adaptive Multi-Rate (AMR) technology is widely used in various communication systems. The narrowband AMR (AMR Narrow Band, AMR-NB) technology has a sampling frequency of 8 kHz and provides a voice bandwidth range of 300-3400 Hz. The wideband AMR (AMR Wide Band, AMR-WB) technology has a sampling frequency of 16 kHz and provides a voice bandwidth range of 50-7000 Hz.

The rate mode of the AMR voice service may vary with the channel quality. For example, when the channel quality is poor, the low rate mode is adopted, so that more bit redundancy bits of the channel coding can be allocated to implement error correction for more reliable. The error control, while using a high rate mode when the channel quality is good and the bit error rate is low, can improve the voice quality.

For example, vocoders in the UMTS (Universal Mobile Telecommunication System) can use AMR technology. The AMR bit rate can be controlled by a radio access network. The AMR vocoder is an integrated vocoder with multiple source rates that can be used to switch bit rates between speech frames. The AMR vocoder automatically selects an appropriate speech codec algorithm according to the change of the uplink and downlink signal quality, and continuously adjusts the speech coding rate. Different speech coding and decoding algorithms generate speech streams of different rates, thereby achieving voice quality and system capacity. The optimal balance. The AMR-NB speech coding rate includes 12.2 kb/s, 10.2 kb/s, 7.95 kb/s, 7.4 kb/s, 6.7 kb/s, 5.9 kb/s, 5.15 kb/s, 4.75 kb/s. The AMR-WB speech coding rate includes 23.85 kb/s, 23.05 kb/s, 19.85 kb/s, 18.25 kb/s, 15.85 kb/s, 14.25 kb/s, 12.65 kb/s, 8.85 kb/s, 6.6 kb/ s. At each speech coding rate, the sender of the voice service is divided into three sub-flows of eight, B, and C according to the importance of the bits in the voice frame. Class A (Subclass A) substream is of the highest importance, Class B (Class B) Substreams are second, Class C substreams are of the least importance.

^{Currently, 3GPP (the 3 rd Generation Partnership} Project) 34.108 and 3GPP 25.993 protocol recommended only convolutional codes (Convolutional Codes, CC) as a channel coding encoding AMR-NB and AMR-WB speech service. For example, in the AMR-NB technology, a class A subflow, Both the B-type sub-flow and the C-type sub-flow use CC coding. In the AMR-WB technology, the A-type sub-flow and the B-type sub-flow use CC coding.

However, the inventors of the present invention have found that the prior art single channel coding scheme may not optimize the transmission performance of the channel. Summary of the invention

Embodiments of the present invention provide a channel coding method, a channel decoding method, and apparatus for multi-rate voice services, which are capable of optimizing channel transmission performance.

A first aspect provides a channel coding method for a multi-rate voice service, including: determining a rate mode of a voice service, where the voice service includes at least two types of sub-streams; and a rate mode according to the voice service and at least two types of sub-streams and channels Corresponding relationship between coding modes, determining a channel coding mode for at least two types of substreams, wherein there is a correspondence between at least two types of substreams of each rate mode and a channel coding mode; using the determined channel coding mode to at least Two types of substreams are channel coded.

In a first possible implementation manner of the first aspect, the foregoing, according to the corresponding relationship between the rate mode of the voice service and the at least two types of substreams and the channel coding mode, determining a channel coding manner for the at least two types of substreams, including: When the rate mode of the voice service indicates that the rate of the voice service is in the first rate interval, the convolutional code coding mode is selected as the channel coding mode of the at least two types of substreams; and the rate mode of the voice service indicates that the rate of the voice service is located in the second mode. In the rate interval, the convolutional code coding mode is selected as the channel coding mode of a part of the substreams of the at least two types of substreams, and the Turbo code coding mode is selected as the channel coding mode of the other partial substreams of the at least two types of substreams.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner, the multi-rate voice service is a broadband adaptive multi-rate voice service, and the at least two types of sub-flows include a class A sub-flow and a B-class sub-flow. And the foregoing, when the rate mode of the voice service indicates that the rate of the voice service is in the first rate interval, the convolutional code coding mode is selected as the coding mode of the at least two types of substreams, including: indicating a voice service in a rate mode of the voice service When the rate of the voice service is lower than the first threshold, the convolutional code coding mode is selected as the coding mode of the A-type sub-flow and the B-type sub-flow, where the rate mode of the voice service indicates that the rate of the voice service is in the second rate interval. The convolutional code coding mode is selected as the coding mode of a part of the at least two types of substreams, and the Turbo code coding mode is selected as the coding mode of the other part of the at least two types of substreams, including: a rate mode in the voice service. When the rate indicating the voice service is greater than or equal to the first threshold is less than or equal to the second threshold, the convolutional code coding mode is selected as the class A. Encoding stream, and selects a Turbo code encoding Class B substream The encoding method.

In conjunction with the second possible implementation of the first aspect, in a third possible implementation, the first threshold is 12.65 kb/s, the second threshold is 23.85 kb/s, or the first threshold is 12.65 kb/ s, the second threshold is 15.85 kb/s.

With reference to the third possible implementation manner of the first aspect, in a fourth possible implementation manner, in a case where the second threshold is 15.85 kb/s, the foregoing rate mode according to the voice service and the at least two types of substreams are Corresponding relationship between the channel coding modes, the channel coding mode is determined for the at least two types of substreams, and the method further includes: when the rate mode of the voice service indicates that the rate of the voice service is greater than or equal to the third threshold, selecting the Turbo code coding mode as the class A sub A combination of a combination of a stream and a class B substream, wherein the third threshold is 23.85 kb/s.

In a fifth possible implementation manner of the first aspect, the foregoing, according to the correspondence between the rate mode of the voice service and the channel coding mode of the at least two types of substreams, determining a channel coding manner for the at least two types of substreams, including: When the rate mode of the voice service indicates that the rate of the voice service is within the second rate interval, the Turbo code coding mode is selected as a coding mode of a combination of a part of the at least two types of substreams or all of the substreams.

With reference to the fifth possible implementation manner of the first aspect, in a sixth possible implementation manner, the multi-rate voice service is a broadband adaptive multi-rate voice service, and the at least two types of sub-flows include a class A sub-flow and a B-type sub- a stream, where the rate mode of the voice service indicates that the rate of the voice service is located in the second rate interval, and the Turbo code coding mode is selected as a coding mode of a combination of a part of the at least two types of substreams or all of the substreams, including When the rate mode of the voice service indicates that the rate of the voice service is greater than or equal to the third threshold, the Turbo code coding mode is selected as a combination of the class A substream and the class B substream, wherein the third threshold is 23.85 kb/s.

With reference to the fifth possible implementation manner of the first aspect, in a seventh possible implementation manner, the multi-rate voice service is a narrow-band adaptive multi-rate voice service, and the at least two types of sub-flows include a class A sub-flow and a B-type sub- a stream and a class C substream, wherein when the rate mode of the voice service indicates that the rate of the voice service is within the second rate interval, the Turbo code coding mode is selected as a part of the at least two types of substreams or a combination of all the substreams The coding mode includes: when the rate mode of the voice service indicates that the rate mode of the voice service is greater than or equal to the fourth threshold, selecting a convolutional code coding mode as the coding mode of the A-type sub-flow, and selecting the Turbo code coding mode as the B-type sub-flow The coding mode of the combination with the C-type sub-flow, when the rate mode of the voice service indicates that the rate mode of the voice service is less than the fourth threshold, respectively selecting the convolutional code coding mode as the A-type sub-flow, the B-type sub-flow, and the C-class sub- Stream coding In this way, the fourth threshold is 12.2 kb/s.

With reference to the first aspect or any one of the foregoing possible implementation manners, in an eighth possible implementation manner, the method of the first aspect further includes: generating a transport format combination indicator, and transmitting the transport format combination indicator to the receiving end The transport format combination indicator is used to indicate a transport format combination of at least two types of substreams of the voice service, and the transport format combination includes a correspondence.

In conjunction with the first aspect or any one of the foregoing possible implementation manners, in a ninth possible implementation manner, the method of the first aspect further includes: receiving the foregoing correspondence from the radio network controller.

In a second aspect, a channel decoding method for a multi-rate voice service is provided, including: receiving a voice service, where the voice service includes at least two types of sub-streams; and corresponding to a channel coding mode of the at least two types of sub-streams according to a rate mode a relationship between the channel decoding modes of the at least two types of substreams, wherein there is a correspondence between at least two types of substreams of each rate mode and a channel coding mode; and at least two types of substreams are determined by using the determined channel decoding manner Channel decoding is performed.

In a first possible implementation manner of the second aspect, the channel decoding manner of the at least two types of substreams is determined according to the corresponding relationship between the rate mode and the at least two types of substreams and the channel coding manner, including: When the rate mode of the service indicates that the rate of the voice service is within the first rate interval, the decoding mode of the convolutional code is selected as the channel decoding mode of at least two types of substreams; the rate mode of the voice service indicates that the rate of the voice service is located at the In the second rate interval, the decoding mode of the convolutional code is selected as the channel decoding mode of a part of the substreams of the at least two types of substreams, and the decoding mode of the turbo code is selected as the other substream of the at least two types of substreams. Channel decoding method.

With reference to the first possible implementation manner of the second aspect, in a second possible implementation manner, the multi-rate voice service is a broadband adaptive multi-rate voice service, and the at least two types of sub-flows include a class A sub-flow and a B-class sub-flow. a stream, wherein the rate mode of the voice service indicates that the rate of the voice service is located in the first rate interval, and the decoding mode of the convolutional code is selected as the channel decoding mode of the at least two types of substreams, including: When the mode indicates that the rate of the voice service is less than the first threshold, respectively, the decoding mode of the convolutional code is selected as the channel decoding mode of the class A substream and the class B substream, wherein the rate mode in the voice service indicates the rate of the voice service. When located in the second rate interval, the decoding mode of the convolutional code is selected as the channel decoding mode of a part of the substreams of the at least two types of substreams, and the decoding mode of the turbo code is selected as the other part of the at least two types of substreams. The channel decoding mode of the substream includes: when the rate mode of the voice service indicates that the rate of the voice service is greater than or equal to the first threshold and less than or equal to the second threshold, The decoding method of the convolutional code is used as the channel decoding method of the class A substream, and the decoding mode of the turbo code is selected as the channel decoding mode of the class B substream. In conjunction with the second possible implementation of the second aspect, in a third possible implementation, the first threshold is 12.65 kb/s, the second threshold is 23.85 kb/s, or the first threshold is 12.65 kb/ s, the second threshold is 15.85 kb/s.

With reference to the third possible implementation manner of the second aspect, in a fourth possible implementation manner, in the case that the second threshold is 15.85 kb/s, the foregoing channel coding manner according to the rate mode and the at least two types of substreams Determining the channel decoding manner of the at least two types of substreams, the method further includes: when the rate mode of the voice service indicates that the rate of the voice service is greater than or equal to the third threshold, selecting a decoding mode of the turbo code as the class A A channel decoding method combining a stream and a class B substream, wherein the third threshold is 23.85 kb/s.

In a fifth possible implementation manner of the second aspect, the channel decoding manner of the at least two types of substreams is determined according to the corresponding relationship between the rate mode and the at least two types of substreams and the channel coding manner, including: When the rate mode of the service indicates that the rate of the voice service is in the second rate interval, the decoding mode of the turbo code is selected as a channel decoding mode of a combination of a part of the at least two types of substreams or all of the substreams.

With reference to the fifth possible implementation manner of the second aspect, in a sixth possible implementation manner, the multi-rate voice service is a broadband adaptive multi-rate voice service, and the at least two types of sub-flows include the A-type sub-flow and the B-type sub- a stream, wherein the rate mode of the voice service indicates that the rate of the voice service is located in the second rate interval, and the decoding mode of the turbo code is selected as a channel translation of a part of the at least two types of substreams or a combination of all the substreams The code mode includes: when the rate mode of the voice service indicates that the rate of the voice service is greater than or equal to the third threshold, selecting a decoding mode of the turbo code as a channel decoding mode of the combination of the class A substream and the class B substream, where the The three threshold is 23.85 kb/s.

With reference to the fifth possible implementation manner of the second aspect, in a seventh possible implementation manner, the multi-rate voice service is a narrow-band adaptive multi-rate voice service, and the at least two types of sub-flows include a class A sub-flow and a B-type sub- And the C-type sub-flow, wherein when the rate mode of the voice service indicates that the rate of the voice service is in the second rate interval, the decoding mode of the Turbo code is selected as a part of the sub-stream or all sub-streams of the at least two types of sub-streams The combined channel decoding manner includes: when the rate mode of the voice service indicates that the rate mode of the voice service is greater than or equal to the fourth threshold, selecting a decoding mode of the convolutional code as a channel decoding mode of the class A substream, and selecting The decoding mode of the Turbo code is used as a channel decoding method for combining the B-type sub-flow and the C-type sub-flow; when the rate mode of the voice service indicates that the rate mode of the voice service is less than the fourth threshold, respectively, the decoding of the convolutional code is selected. The mode is a channel decoding mode of the class A substream, the class B substream, and the class C substream, wherein the fourth threshold is 12.2 kb/s. With reference to the second aspect, or any one of the foregoing possible implementation manners of the second aspect, in the eighth possible implementation, the method of the second aspect further includes: receiving a transport format combination indicator sent by the sending end, where the transport format is The combination indicator indicates a transmission format of at least two types of substreams of the voice service, where the transmission format includes: a correspondence between a rate mode and a channel coding mode of at least two types of substreams, wherein the foregoing rate mode and at least two types of substreams are Corresponding relationship between channel coding modes, determining a channel decoding manner of at least two types of substreams, including: a correspondence between a rate mode indicated by a transport format combination indicator and a channel coding mode of at least two types of substreams, At least two types of substreams determine a channel decoding mode.

With reference to the second aspect or any one of the foregoing possible implementation manners of the second aspect, in the ninth possible implementation manner, the determining, by the foregoing, the channel decoding manner of the at least two types of substreams includes: determining, by using a blind detection manner, at least Channel decoding mode for two types of substreams.

With reference to the second aspect or any one of the foregoing possible implementation manners of the second aspect, in a tenth possible implementation, the method of the second aspect further includes: receiving the foregoing correspondence from the radio network controller.

In a third aspect, a channel coding method for a multi-rate voice service is provided, including: configuring a correspondence between at least two types of sub-flows of each type of voice service and a channel coding mode; and transmitting the corresponding relationship to the sending end So that the transmitting end determines the channel coding mode for the at least two types of substreams according to the foregoing correspondence, and performs channel coding on the at least two types of substreams by using the determined channel coding manner; and sends the corresponding relationship to the receiving end, so that the receiving end Determining a channel decoding manner for the at least two types of substreams according to a correspondence relationship, and performing channel decoding on the at least two types of substreams by using the determined channel decoding manner.

In a first possible implementation manner of the third aspect, for the broadband adaptive multi-rate voice service, the correspondence includes: In the 23.85 kb/s rate mode, the combination of the class A subflow and the class B substream corresponds to the Turbo Code coding mode, in the 15.85kb/s~12.65 kb/s rate mode, the class A substream corresponds to the convolutional code coding mode, and the class B substream corresponds to the turbo code coding mode, at 8.85 kb/s to 6.6 kb/ In the s rate mode, the class A substream corresponds to the convolutional code encoding mode, and the B class substream corresponds to the convolutional code encoding mode; or, for the broadband adaptive multirate speech service, the corresponding relationship includes: at 23.85 kb/s ~ In the 12.65 kb/s rate mode, the class A substream corresponds to the convolutional code encoding mode, the class B substream corresponds to the turbo code encoding mode, and the class A substream corresponds to the convolution in the 8.85k~6.6 kb/s rate mode. In the code coding mode, the B-type sub-flow corresponds to the convolutional code coding mode; or, for the narrow-band adaptive multi-rate speech service, the correspondence includes: in the rate mode less than 12.2 kb/s, the class A sub-flow, the B-class The substream and the C class substream correspond to the convolutional code encoding mode. In the 12.2 kb/s rate mode, the class A substream corresponds to the convolutional code encoding mode, and the combination of the B class substream and the C class substream corresponds to Turbo code encoding.

In a fourth aspect, a channel coding apparatus for a multi-rate voice service is provided, including: a determining module, configured to determine a rate mode of a voice service, where the voice service includes at least two types of substreams, a rate mode, and at least two types of substreams Corresponding relationship between the channel coding modes, the determining module, configured to determine a channel coding mode for at least two types of substreams according to a rate mode of the voice service and a correspondence between at least two types of substreams and a channel coding mode, where each There is a corresponding relationship between the at least two types of substreams and the channel coding modes. The coding module is configured to perform channel coding on at least two types of substreams by using the determined channel coding manner.

In a first possible implementation manner of the fourth aspect, the determining module selects a convolutional code encoding manner as the channel coding of the at least two types of substreams when the rate mode of the voice service indicates that the rate of the voice service is within the first rate interval. When the rate mode of the voice service indicates that the rate of the voice service is in the second rate interval, the convolutional code coding mode is selected as a channel coding mode of a part of the at least two types of substreams, and the Turbo code coding mode is selected as the at least Channel coding mode of another partial substream in two types of substreams.

With reference to the first possible implementation manner of the fourth aspect, in a second possible implementation manner, the multi-rate voice service is a broadband adaptive multi-rate voice service, and the at least two types of sub-flows include a class A sub-flow and a B-class sub-flow. And the determining, when the rate mode of the voice service indicates that the rate of the voice service is less than the first threshold, respectively selecting the convolutional code coding mode as the coding mode of the A-type sub-flow and the B-type sub-flow, determining the rate of the module in the voice service. When the mode indicates that the rate of the voice service is greater than or equal to the first threshold and is less than or equal to the second threshold, the convolutional code coding mode is selected as the coding mode of the class A substream, and the Turbo code coding mode is selected as the coding mode of the class B substream.

With reference to the second possible implementation manner of the fourth aspect, in a third possible implementation manner, the first threshold is 12.65 kb/s, the second threshold is 23.85 kb/s, or the first threshold is 12.65 kb/ s, the second threshold is 15.85 kb/s.

With reference to the third possible implementation manner of the fourth aspect, in a fourth possible implementation manner, the determining module indicates, in a case where the second threshold is 15.85 kb/s, the rate mode of the voice service indicates the rate of the voice service. When the third threshold is greater than or equal to the third threshold, the Turbo code coding mode is selected as the coding mode of the combination of the class A substream and the class B substream, wherein the third threshold is 23.85 kb/s.

In a fifth possible implementation manner of the fourth aspect, determining a rate mode of the module in the voice service When the rate indicating the voice service is within the second rate interval, the Turbo code coding mode is selected as a coding mode of a combination of a part of the at least two types of substreams or all of the substreams.

With reference to the fifth possible implementation manner of the fourth aspect, in a sixth possible implementation manner, the multi-rate voice service is a broadband adaptive multi-rate voice service, and the at least two types of sub-flows include a class A sub-flow and a B-type sub- And the determining, when the rate mode of the voice service indicates that the rate of the voice service is greater than or equal to the third threshold, selecting a turbo coding mode as the coding mode of the combination of the A-type sub-flow and the B-type sub-flow, where the third threshold is 23.85 Kb/s.

With reference to the fifth possible implementation manner of the fourth aspect, in a seventh possible implementation manner, the multi-rate voice service is a narrow-band adaptive multi-rate voice service, and the at least two types of sub-flows include a class A sub-flow and a B-type sub- And the C-type sub-flow, wherein the determining module selects the convolutional code coding mode as the coding mode of the A-type sub-flow when the rate mode of the voice service indicates that the rate mode of the voice service is greater than or equal to the fourth threshold, and selects a Turbo code coding mode. As a combination of the B-type sub-flow and the C-type sub-flow, when the rate mode of the voice service indicates that the rate mode of the voice service is less than the fourth threshold, respectively, the convolutional code coding mode is selected as the A-type sub-flow and the B-type sub-category. The coding mode of the stream and the C-type sub-flow, the fourth threshold is 12.2 kb/s.

With reference to the fourth aspect, or any one of the foregoing possible implementation manners of the fourth aspect, in the eighth possible implementation, the channel coding apparatus of the fourth aspect further includes: a generating module, configured to generate a transport format combination indicator And a sending module, configured to send the transport format combination indicator to the receiving end, where the transport format combination indicator is used to indicate a transport format combination of at least two types of substreams of the voice service, where the transport format combination includes a correspondence.

With reference to the fourth aspect, or any one of the foregoing possible implementation manners of the fourth aspect, in the ninth possible implementation, the channel coding apparatus of the fourth aspect further includes: a receiving module, configured to receive from the radio network controller The above correspondence.

The fifth aspect provides a channel decoding apparatus for a multi-rate voice service, including: a receiving module, configured to receive a voice service, where the voice service includes at least two types of sub-streams; and a determining module, configured according to a rate mode and at least two types Correspondence between the substream and the channel coding mode, wherein there is a correspondence between at least two types of substreams of each rate mode and a channel coding mode, and channel decoding modes of at least two types of substreams are determined; a decoding module, And decoding at least two types of substreams by using the determined channel decoding manner.

In a first possible implementation manner of the fifth aspect, the determining module selects a decoding mode of the convolutional code when the rate mode of the voice service indicates that the rate of the voice service is within the first rate interval. Channel decoding mode of at least two types of substreams; when the rate mode of the voice service indicates that the rate of the voice service is in the second rate interval, the decoding mode of the convolutional code is selected as a part of the substreams of the at least two types of substreams In the channel decoding mode, the decoding mode of the turbo code is selected as the channel decoding mode of the other partial stream in at least two types of substreams.

With reference to the first possible implementation manner of the fifth aspect, in a second possible implementation manner, the multi-rate voice service is a broadband adaptive multi-rate voice service, and the at least two types of sub-flows include a class A sub-flow and a B-class sub-flow. a flow, wherein the determining module selects a decoding mode of the convolutional code as a channel decoding manner of the A-type sub-flow and the B-type sub-flow when the rate mode of the voice service indicates that the rate of the voice service is less than the first threshold, and the determining module is When the rate mode of the voice service indicates that the rate of the voice service is greater than or equal to the first threshold being less than or equal to the second threshold, the decoding mode of the convolutional code is selected as the channel decoding mode of the class A substream, and the decoding mode of the turbo code is selected as the decoding mode. Channel decoding method for class B substreams.

With reference to the second possible implementation manner of the fifth aspect, in a third possible implementation manner, the first threshold is 12.65 kb/s, the second threshold is 23.85 kb/s, or the first threshold is 12.65 kb/ s, the second threshold is 15.85 kb/s.

With reference to the third possible implementation manner of the fifth aspect, in a fourth possible implementation manner, in a case where the second threshold is 15.85 kb/s, determining that the rate mode of the voice service in the module indicates that the rate of the voice service is greater than When the third threshold is equal to the third threshold, the decoding mode of the turbo code is selected as the channel decoding mode of the combination of the class A substream and the class B substream, wherein the third threshold is 23.85 kb/s.

In a fifth possible implementation, the determining module, when the rate mode of the voice service indicates that the rate of the voice service is in the second rate interval, selects a decoding mode of the turbo code as a part of the at least two types of substreams or The channel decoding mode of the combination of all substreams.

With reference to the fifth possible implementation manner of the fifth aspect, in a sixth possible implementation manner, the multi-rate voice service is a broadband adaptive multi-rate voice service, and the at least two types of sub-flows include the A-type sub-flow and the B-type sub- a stream, wherein the determining module selects a decoding mode of the turbo code as a channel decoding mode of the combination of the class A substream and the class B substream when the rate mode of the voice service indicates that the rate of the voice service is greater than or equal to a third threshold, where The three threshold is 23.85 kb/s.

With reference to the fifth possible implementation manner of the fifth aspect, in a seventh possible implementation manner, the multi-rate voice service is a narrow-band adaptive multi-rate voice service, and the at least two types of sub-flows include a class A sub-flow and a B-type sub- a stream and a class C substream, wherein the determining module selects a decoding mode of the convolutional code as a channel decoding mode of the class A substream when the rate mode of the voice service indicates that the rate mode of the voice service is greater than or equal to a fourth threshold, and selects The decoding method of Turbo code is used as a group of B-type sub-flow and C-type sub-flow In the channel decoding mode, when the rate mode of the voice service indicates that the rate mode of the voice service is less than the fourth threshold, respectively, the decoding mode of the convolutional code is selected as the class A substream, the B class substream, and the C class substream. In the channel decoding mode, the fourth threshold is 12.2 kb/s.

With reference to the fifth aspect, or any one of the foregoing possible implementation manners of the fifth aspect, in the eighth possible implementation, the receiving module is further configured to receive a transport format combination indicator sent by the sending end, where the transport format combination indicator a transmission format indicating at least two types of substreams of the voice service, where the transmission format includes: a correspondence between a rate mode and a channel coding mode of at least two types of substreams, wherein the determining module combines the rate mode indicated by the transport format indicator with at least The correspondence between the channel coding modes of the two types of substreams determines the channel decoding mode for at least two types of substreams.

With reference to the fifth aspect or any one of the foregoing possible implementation manners of the fifth aspect, in a ninth possible implementation manner, the determining module determines, by using a blind detection manner, a channel decoding manner of the at least two types of substreams.

With reference to the fifth aspect or any one of the foregoing possible implementation manners of the fifth aspect, in a tenth possible implementation, the receiving module is further configured to receive the foregoing correspondence from the radio network controller.

According to a sixth aspect, a radio network controller is provided, including: a configuration module, configured to configure a correspondence between at least two types of sub-flows and channel coding modes of voice services of each rate mode; And sending the corresponding relationship to the sending end, so that the sending end determines the channel coding mode for the at least two types of substreams according to the corresponding relationship, and performs channel coding on the at least two types of substreams by using the determined channel coding manner, and the corresponding relationship is used. The method is sent to the receiving end, so that the receiving end determines the channel decoding mode for the at least two types of substreams according to the corresponding relationship, and performs channel decoding on the at least two types of substreams by using the determined channel decoding manner.

In a first possible implementation manner of the sixth aspect, for the broadband adaptive multi-rate voice service, the correspondence includes: In the 23.85 kb/s rate mode, the combination of the A-type sub-flow and the B-type sub-flow corresponds to the Turbo Code coding mode, in the 15.85kb/s~12.65 kb/s rate mode, the class A substream corresponds to the convolutional code coding mode, and the class B substream corresponds to the turbo code coding mode, at 8.85 kb/s to 6.6 kb/ In the s rate mode, the class A substream corresponds to the convolutional code encoding mode, and the B class substream corresponds to the convolutional code encoding mode; or, for the broadband adaptive multirate speech service, the corresponding relationship includes: at 23.85 kb/s ~ In the 12.65 kb/s rate mode, the class A substream corresponds to the convolutional code encoding mode, and the class B substream corresponds to the turbo code encoding mode. In the 8.85 kb/s to 6.6 kb/s rate mode, the class A substream corresponds to Convolutional code coding mode, the B-type sub-flow corresponds to the convolutional code coding mode; for the broadband adaptive multi-rate speech service; or, for the narrow-band adaptive multi-rate speech service, the correspondence includes: at less than 12.2 kb/s In the rate mode, the class A substream, the class B substream, and the class C substream correspond to the convolutional code encoding mode. In the 12.2 kb/s rate mode, the class A substream corresponds to the convolutional code encoding mode, B The combination of the class substream and the class C substream corresponds to the Turbo code encoding.

In a seventh aspect, a channel coding apparatus for a multi-rate voice service is provided, comprising: a processor and a memory, the processor invoking information stored in the memory to determine a rate mode of the voice service, wherein the voice service includes at least two types a substream, and determining a channel coding mode for the at least two types of substreams according to a correspondence between a rate mode of the voice service and the at least two types of substreams and a channel coding mode, where at least two types of each rate mode are used There is a correspondence between the substream and the channel coding mode; the at least two types of substreams are channel coded by using the determined channel coding manner.

In a first possible implementation manner of the seventh aspect, the processor selects a convolutional code encoding manner as the at least two types when the rate mode of the voice service indicates that the rate of the voice service is in the first rate interval. a channel coding mode of the stream; when the rate mode of the voice service indicates that the rate of the voice service is in the second rate interval, the convolutional code coding mode is selected as a channel coding mode of a part of the at least two types of substreams, The Turbo code coding mode is selected as the channel coding mode of the other partial substream of the at least two types of substreams.

According to an eighth aspect, a channel decoding apparatus for a multi-rate voice service is provided, including: a receiver, a processor, and a memory, where the receiver is configured to receive a voice service, where the voice service includes at least two types of substreams; Determining a channel decoding manner of the at least two types of substreams according to a correspondence between the rate mode and the at least two types of substreams and channel coding modes, where at least two types of substreams and channel coding modes of each rate mode are determined There is a correspondence between the two, and the at least two types of substreams are channel-decoded by using the determined channel decoding manner.

In a first possible implementation manner of the eighth aspect, the processor selects a decoding mode of the convolutional code as the at least two when the rate mode of the voice service indicates that the rate of the voice service is in the first rate interval. Channel decoding mode of a sub-flow; when the rate mode of the voice service indicates that the rate of the voice service is in the second rate interval, the decoding mode of the convolutional code is selected as a part of the substreams of the at least two types of substreams The channel decoding method selects the decoding mode of the turbo code as the channel decoding mode of the other partial stream of the at least two types of substreams.

A ninth aspect provides a radio network controller, including: a processor, a transmitter, and a memory, the processor invoking information in the memory, configured to configure at least two types of substreams of each rate mode voice service Correspondence between channel coding modes; the transmitter is used to correspond the relationship Sending to the transmitting end, so that the transmitting end determines the channel coding mode for the at least two types of substreams according to the corresponding relationship, and performs channel coding on the at least two types of substreams by using the determined channel coding manner, and sends the corresponding relationship to the And a receiving end, so that the receiving end determines a channel decoding manner for the at least two types of substreams according to the correspondence, and performs channel decoding on the at least two types of substreams by using the determined channel decoding manner.

The embodiment of the present invention may determine a channel coding mode for a substream of a voice service according to a rate mode of the voice service and a correspondence between the substream and the channel coding mode, and perform channel coding on the substream of the voice service by using the determined channel coding mode. Since the corresponding channel coding mode can be determined for the voice service of different rate modes, the coding gain of the voice service of different rate modes can be improved, thereby optimizing the transmission performance of the channel. DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the embodiments of the present invention will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in view of the drawings.

1 is a schematic flow chart of a channel coding method for multi-rate voice traffic in accordance with one embodiment of the present invention.

2A is a schematic flow chart of a channel decoding method for multi-rate voice traffic according to an embodiment of the present invention.

2A is a schematic flow chart of a channel coding process of a multi-rate voice service according to an embodiment of the present invention.

3 is a schematic illustration of a channel coding process for multi-rate voice traffic in accordance with one embodiment of the present invention.

4 is a schematic illustration of a channel coding process for multi-rate voice traffic in accordance with another embodiment of the present invention.

Figure 5 is a schematic illustration of a channel coding process for multi-rate voice traffic in accordance with yet another embodiment of the present invention.

Figure 6 is a schematic illustration of a channel decoding process for multi-rate voice traffic in accordance with one embodiment of the present invention.

7 is a diagram showing a channel decoding process of multi-rate voice traffic according to another embodiment of the present invention. Intention.

Figure 8 is a schematic block diagram of a channel coding apparatus for multi-rate voice service according to an embodiment of the present invention.

Figure 9 is a schematic block diagram of a channel decoding apparatus for multi-rate voice traffic according to an embodiment of the present invention.

FIG. 10 is a schematic structural diagram of a radio network controller according to an embodiment of the present invention.

Figure 11 is a schematic block diagram of a channel coding apparatus for multi-rate voice service according to an embodiment of the present invention.

Figure 12 is a schematic block diagram of a channel decoding apparatus for multi-rate voice traffic according to an embodiment of the present invention;

Figure 13 is a schematic block diagram of a radio network controller for multi-rate voice service in accordance with one embodiment of the present invention. detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without making creative labor are within the scope of the present invention.

It should be understood that the technical solution of the present invention can be applied to various communication systems, such as: GSM (Global System of Mobile communication) system, CDM A (Code Division Multiple Access) system, WCDMA (Wideband) Code Division Multiple Access, GPRS (General Packet Radio Service), LTE (Long Term Evolution) system, LTE-A (Advanced long term evolution) The system, the UMTS (Universal Mobile Telecommunication System), and the like are not limited in the embodiment of the present invention. For convenience of description, the embodiment of the present invention will be described by taking a UMTS network as an example. Different network elements can be included in the system. For example, the network elements of the radio access network in the LTE and the LTE-A include an eNB (eNodeB, an evolved base station), and the network elements of the radio access network in the WCDMA include an RNC (Radio Network Controller) and a NodeB. The embodiments of the present invention are not limited, but for convenience of description, the following embodiments will be described by taking a NodeB as an example. It should be understood that, in the embodiment of the present invention, the user equipment (UE, User Equipment) includes but is not limited to a mobile station (MS, Mobile Station), a mobile terminal (Mobile Terminal), a mobile telephone (Mobile Telephone), a mobile phone (handset). And portable equipment, etc., the user equipment can communicate with one or more core networks via a Radio Access Network (RAN), for example, the user equipment can be a mobile phone (or "cellular" The telephone, the computer with wireless communication function, etc., the user equipment can also be a portable, pocket, handheld, computer built-in or vehicle-mounted mobile device.

1 is a schematic flow chart of a channel coding method for multi-rate voice traffic in accordance with one embodiment of the present invention. The embodiment of Figure 1 can be performed by an encoding device at the transmitting end.

110. Determine a rate mode of the voice service, where the voice service includes at least two types of substreams. The voice service may be an AMR-WB service or an AMR-NB service. The embodiment of the present invention is not limited thereto. For example, the voice service may be other adaptive multi-rate voice services using multiple sub-stream transmission modes. When the voice service is AMR-NB, the at least two types of substreams may include a class A substream, a class B substream, and a class C substream. When the voice service is AMR-WB, the at least two types of substreams may include a class A substream and a class B substream.

Embodiments of the present invention may determine the rate of voice traffic by detecting the length of a packet of a certain type of sub-stream of a voice service (eg, a class A substream) within a speech frame, provided that such sub-rates of different speech rates are Streaming packets are set to different lengths. The embodiment of the present invention does not limit the rate mode for determining the voice service. For example, the rate of the voice service may also be determined according to the notification of higher layer signaling (e.g., RRC signaling).

120. Determine a channel coding mode for at least two types of substreams according to a rate mode of the voice service and a correspondence between at least two types of substreams and a channel coding mode, where at least two types of substreams and channel coding of each rate mode are performed. There is a correspondence between the modes.

It can be understood that, in the embodiment of the present invention, there is a corresponding relationship between the various sub-flows and the channel coding modes for the rate mode of different voice services. For example, for each rate of voice services, the corresponding combination of the transport formats may be used. The channel coding modes of different substreams are configured in the transmission channel parameters to perform channel coding on different substreams transmitted in different transport channels. Optionally, a combined channel coding manner of at least two types of substreams may also be set to perform channel coding on at least two types of substreams transmitted in the same channel. The corresponding relationship may be configured by using a high-level signaling (for example, RRC signaling), for example, the radio network controller sends the correspondence to the base station and the user equipment through RRC signaling; in addition, the corresponding relationship may also be sent in the voice service. End (for example, base station side Or user device side) settings. Here, the rate mode is used to indicate the bit rate adopted by the AMR voice service, and the different rate modes correspond to different bit rates.

The channel coding mode may be a convolutional code coding mode or a Turbo code coding mode. For example, in a rate mode, a class A substream may be set using a convolutional code coding mode, and a B type substream may be a turbo code coding mode. In another rate mode, both the class A subflow and the class B substream can be set to use convolutional code coding, or a combination of a class A subflow and a class B subflow can be set.

Turbo code encoding, and so on.

130: Perform channel coding on at least two types of substreams by using the determined channel coding manner.

After the rate mode of the voice service is determined, the channel coding mode corresponding to the at least two types of substreams may be determined according to the foregoing correspondence. For example, in a certain rate mode, a class A substream is channel coded by using a convolutional code coding method, and a class B substream is channel coded by using a turbo code coding method.

The embodiment of the present invention may determine a channel coding mode for a substream of a voice service according to a rate mode of the voice service and a correspondence between the substream and the channel coding mode, and perform channel coding on the substream of the voice service by using the determined channel coding mode. Since the corresponding channel coding mode can be determined for the voice service of different rate modes, the coding gain of the voice service of different rate modes can be improved, thereby optimizing the transmission performance of the channel.

In 120, when the rate mode of the voice service indicates that the rate of the voice service is within the first rate interval, the convolutional code coding mode is selected as the channel coding mode of the at least two types of substreams; the rate mode of the voice service indicates the voice service. When the rate is in the second rate interval, the convolutional code coding mode is selected as the channel coding mode of a part of the at least two types of substreams, and the Turbo code coding mode is selected as the channel of the other part of the at least two types of substreams. Encoding. The first rate interval is a rate interval that is smaller than the first threshold, and the second rate interval is a rate interval that is greater than or equal to the first threshold and less than the second threshold. For example, if the first threshold is a and the second threshold is b, the first rate interval is (0, a) and the second rate interval is [a, b].

According to an embodiment of the present invention, the multi-rate voice service is a broadband adaptive multi-rate voice service, and at least two types of sub-flows include a class A sub-flow and a class B sub-flow, wherein in 120, a rate mode in the voice service indicates a voice service When the rate is less than the first threshold, the convolutional code coding mode is selected as the coding mode of the A-type sub-flow and the B-type sub-flow respectively; the rate mode of the voice service indicates that the rate of the voice service is greater than or equal to the first threshold and less than or equal to the second threshold. When the convolutional code coding mode is selected as the channel coding mode of the class A substream, and the turbo coding method is selected as the channel coding side of the class B substream. Style.

For example, the class A substream can be a class A substream in the broadband adaptive multi-rate voice service, which is of the highest importance, and can perform Cyclic Redundancy Check (CRC) on the class A substream before channel coding. In order to improve the reliability of the data, the CRC-based class A substream is then channel coded.

According to an embodiment of the invention, the first threshold is 12.65 kb/s and the second threshold is 23.85 kb/s. For example, when the rate mode of the AMR voice service is 6.60 kb/s or 8.85 kb/s, respectively, a 1/3 convolutional code coding mode (or a 1/2 convolutional code coding mode) is selected as the class A substream and The coding mode of the B-type substream is 12.65 kb/s, 14.25 kb/s, 15.58 kb/s, 18.25 kb/s, 19.85 kb/s, 23.05 kb/s or 23.85 kb/s in the AMR voice service. In the case of selecting the 1/3 convolutional code coding mode as the channel coding mode of the class A substream, the channel of the class B substream is selected by the Turbo code (TC) mode (or the l/2 Turbo code mode). Encoding.

Table 1 shows the number of bits of the substream of various types of AMR-WB speech frames. For example, in a transmission time interval (ΤΉ) of 20 ms, a voice frame of frame type 0 corresponds to an AMR rate mode of 6.60 kb/s, and a total number of bits is 132, wherein the number of bits of the class A substream is 54, B The number of bits of the class substream is 78, the number of bits of the C class stream is 0, and so on. Table 1

Optionally, as another embodiment, the first threshold is 12.65 kb/s and the second threshold is 15.85 kb/s. For example, in the case where the rate mode of the AMR voice service is 6.60 kb/s and 8.85 kb/s, The 1/3 convolutional code coding mode is selected as the coding mode of the A-type sub-flow and the B-type sub-flow respectively, and in the case where the rate modes of the AMR voice service are 12.65 kb/s, 14.25 kb/s, and 15.58 kb/s, The 1/3 convolutional code coding mode is selected as the channel coding mode of the class A substream, and the 1/3 TC coding mode is selected as the channel coding mode of the class B substream.

Since CC coding is superior to TC coding in the case where the message packet length is relatively short. However, in AMR-WB, the message packet length of the 23.85 kb/s B substream can reach 405 bits. At such a length, the coding gain of the Turbo code is superior to the convolutional code. The embodiment of the present invention also analyzes the block error ratio (BLER) decoding performance of the AMR-WB voice service using different coding and decoding schemes by means of performance simulation. For the voice service, according to the simulation results, the scheme of TC coding for the combination of the A and B substreams is compared (the first scheme), the CC coding of the eighth and B subclasses (the second scheme), and the subclass A of the subclass CC coding and scheme for TC coding of class B substreams (third scheme). The simulation results show that for the 23.85 kb/s service, 1) the first scheme is better than the second scheme when the received signal-to-noise ratio is high. In the case of high received signal-to-noise ratio, the first scheme is better than the first scheme. Three programs; 2) The third program is always better than the second program. Therefore, in the case of pursuing the highest voice quality, the first scheme can be adopted, and in the case of pursuing the robustness of voice quality, the third scheme can be employed. With the solution proposed by the embodiment of the present invention, an optimal coding format can be configured for transmission in different rate modes, so that voice performance is optimized.

According to an embodiment of the present invention, in a case where the second threshold is 15.85 kb/s, in 120, the method of FIG. 1 further includes: when the rate mode of the voice service indicates that the rate of the voice service is greater than or equal to a third threshold, selecting The turbo code coding mode is a channel coding mode of a combination of a class A substream and a class B substream, wherein the third threshold is 23.85 kb/s.

The simulation result of the present invention also shows that for the 15.85 kb/s service, since the code length becomes shorter, the decoding performance of the scheme of combining TC coding of the B-type sub-streams is deteriorated, and the received signal-to-noise when the BLER performance is superior It is higher than the requirement, and the scheme is better than the scheme of CC coding the class A substream and TC coding the class B substream, and the latter is not better than 1.76dB, and even at high reception signal to noise ratio, Since its MOS score is close to perfect score, its advantage is very weak and almost negligible. Therefore, for the 15.85 kb/s service, a scheme of CC coding for the class A substream and TC coding for the class B substream can be employed.

According to an embodiment of the present invention, when the rate mode of the voice service indicates that the rate of the voice service is within the second rate interval, the Turbo code coding mode is selected as a part of the at least two sub-streams or all of the sub-streams. The combined channel coding method. For example, the second rate interval can The rate interval is a rate interval greater than or equal to the third threshold, or the second rate interval may be a rate interval in which the rate is greater than or equal to the fourth threshold.

According to an embodiment of the present invention, the multi-rate voice service is a broadband adaptive multi-rate voice service, and at least two types of sub-flows include a class A sub-flow and a class B sub-flow, wherein in 120, a rate mode in the voice service indicates a voice service When the rate is greater than or equal to the third threshold, the Turbo code coding mode is selected as a channel coding mode of the combination of the class A substream and the class B substream, wherein the third threshold is 23.85 kb/s.

According to an embodiment of the present invention, the multi-rate voice service is a narrowband adaptive multi-rate voice service, and the at least two types of sub-flows include a class A sub-flow, a class B sub-flow, and a C-type sub-flow, wherein in 120, in the voice service When the rate mode indicates that the rate mode of the voice service is greater than or equal to the fourth threshold, the convolutional code coding mode is selected as the channel coding mode of the class A substream, and the turbo code coding mode is selected as the combination of the B class substream and the C class substream. In the channel coding mode, when the rate mode of the voice service indicates that the rate mode of the voice service is less than the fourth threshold, the convolutional code coding mode is selected as the channel coding mode of the class A substream, the class B substream, and the class C substream, respectively.

According to an embodiment of the invention, the fourth threshold is 12.2 kb/s.

For example, when the rate of the AMR-NB voice service is 12.2 kb/s, the convolutional code coding mode is selected as the channel coding mode of the class A substream, and the turbo code coding mode is selected as the class B substream and the C class. The combined channel coding mode of the stream.

Optionally, as another embodiment, the method further includes: generating a transport format combination indicator (TFCI), and transmitting the transport format combination indicator to the receiving end, where the transport format combination indicator is used to indicate at least two types of voice services. The transport format combination (TFC) of the substream, the transport format combination including the above correspondence.

For example, a TFCI of several bits may be used to indicate a transport format combination. For example, a TFCI of a certain bit value indicates that the transport format combination of the class A substream is as follows: The transport channel parameter of the transport channel DCH1 transmitting the class A substream includes the bits of the CRC. The number (for example, 12 bits) and the encoding type (for example, 1/3 CC encoding), the transmission channel parameters of the transmission channel DCH2 transmitting the class B substream include the coding type (for example, 1/3 CC coding).

Optionally, as another embodiment, the method of FIG. 1 further includes: receiving the foregoing correspondence from a radio network controller.

2A is a schematic flow chart of a channel decoding method for multi-rate voice traffic according to an embodiment of the present invention. The embodiment of Figure 2A can be performed by a decoding device at the receiving end.

210: Receive a voice service, where the voice service includes at least two types of sub-flows; 220. Determine a channel decoding manner of the at least two types of substreams according to the rate mode and a correspondence between the at least two types of substreams and a channel coding manner, where at least two types of substreams and channels of each rate mode are determined. There is a correspondence between coding modes;

230. Perform channel decoding on the at least two types of substreams by using the determined channel decoding manner. The embodiment of the present invention may determine a channel decoding manner for a substream of a voice service according to a rate mode of a voice service and a correspondence between a substream and a channel coding manner, and perform channel on the substream of the voice service by using the determined channel decoding manner. Decoding. Since the corresponding channel decoding mode can be determined for voice services of different rate modes, the channel transmission performance can be optimized.

In 220, when the rate mode of the voice service indicates that the rate of the voice service is in the first rate interval, the decoding mode of the convolutional code is selected as the channel decoding mode of the at least two types of substreams; When the rate mode indicates that the rate of the voice service is in the second rate interval, the decoding mode of the convolutional code is selected as the channel decoding mode of a part of the at least two types of substreams, and the decoding mode of the turbo code is selected. A channel decoding method as another partial substream of the at least two types of substreams.

For example, if the receiving end performs the convolutional code encoding on the at least two substreams,

CRC, the decoding method of the convolutional code is a List Viterbi Algorithm (LVA) decoding method, otherwise it is a Viterbi algorithm (VA) decoding method. The decoding method of the above Turbo code is a maximum log-maximum a posteriori (max-log-map, MLP) decoding method.

According to an embodiment of the present invention, a corresponding channel decoding mode is adopted according to different channel coding modes. In the absence of CRC, the VA algorithm is the optimal decoding method for CC codes. In the UMTS system, since the CRC is added to the A substream to provide check protection, the A substream using CC coding can be LVA decoded to improve the decoding capability. For Turbo codes, a more robust MLP decoding method is usually adopted.

According to an embodiment of the present invention, the multi-rate voice service is a broadband adaptive multi-rate voice service, and the at least two types of sub-flows include a class A sub-flow and a class B sub-flow.

Wherein in 220, when the rate mode of the voice service indicates that the rate of the voice service is less than the first threshold, respectively, the decoding mode of the convolutional code is selected as the channel decoding mode of the class A substream and the class B substream, The rate mode of the voice service indicates that the rate of the voice service is greater than or equal to the first threshold is less than or equal to the second threshold, and the decoding mode of the convolutional code is selected as the channel decoding mode of the class A substream, and the Turbo code is selected. The channel decoding method is used as a channel decoding method for a class B substream.

According to an embodiment of the invention, the first threshold is 12.65 kb/s and the second threshold is 23.85 kb/s. Optionally, as another embodiment, the first threshold is 12.65 kb/s and the second threshold is 15.85 kb/s. Optionally, in another embodiment, where the second threshold is 15.85 kb/s, in 220, the method of FIG. 2A further includes: indicating, in a rate mode of the voice service, that the rate of the voice service is greater than or equal to In the case of the three thresholds, the decoding mode of the turbo code is selected as a channel decoding mode of the combination of the class A substream and the class B substream, wherein the third threshold is 23.85 kb/s.

According to an embodiment of the present invention, in 220, when the rate mode of the voice service indicates that the rate of the voice service is in the second rate interval, the decoding mode of the turbo code is selected as a part of the at least two types of substreams. A channel decoding scheme of a combination of streams or all substreams.

According to an embodiment of the present invention, the multi-rate voice service is a broadband adaptive multi-rate voice service, and the at least two types of sub-flows include a class A sub-flow and a class B sub-flow, wherein in 120, a rate mode of the voice service When the rate of the voice service is greater than or equal to the third threshold, the decoding mode of the turbo code is selected as a channel decoding mode of the combination of the class A substream and the class B substream, wherein the third threshold is 23.85 kb/s.

According to an embodiment of the present invention, the multi-rate voice service is a narrowband adaptive multi-rate voice service, and the at least two types of sub-flows include a class A sub-flow, a B-type sub-flow, and a C-type sub-flow.

In 220, when the rate mode of the voice service indicates that the rate mode of the voice service is greater than or equal to the fourth threshold, the decoding mode of the convolutional code is selected as the channel decoding mode of the class A substream, and the Turbo is selected. The decoding mode of the code is used as a channel decoding method for combining the B-type sub-flow and the C-type sub-flow. When the rate mode of the voice service indicates that the rate mode of the voice service is less than the fourth threshold, respectively, the translation of the convolutional code is selected. The code mode is used as a channel decoding method for the class A substream, the class B substream, and the class C substream, and the fourth threshold is 12.2 kb/s.

Optionally, as another embodiment, the method of FIG. 2A further includes: receiving a transport format combination indicator sent by the sender, where the transport format combination indicator indicates a transport format of at least two types of substreams of the voice service, where The transmission format includes: a correspondence between the rate mode and a channel coding mode of the at least two types of substreams, where in 220, the rate mode indicated by the combination of the indicator and the at least two types of substreams may be The correspondence between the channel coding modes determines the channel decoding mode for at least two types of substreams.

For example, a TFCI of several bits may be used to indicate a transport format combination. For example, a TFCI of a certain bit value indicates that the transport format combination of the class A substream is as follows: The transport channel parameter of the transport channel DCH1 transmitting the class A substream includes the bits of the CRC. Number (for example, 12 bits) and decoding type (for example, LVA decoding), the transmission channel parameters of the transmission channel DCH2 transmitting the class B substream include coding Type (for example, MLP decoding). After receiving the TFCI, the receiving end may search for the channel coding mode of the transmission channel parameter in the foregoing transmission format combination according to the value of the TFCI, so as to learn the channel decoding mode corresponding to the channel coding mode.

Optionally, as another embodiment, in 220, a channel decoding manner of the at least two types of substreams is determined by using blind detection.

For example, in the case of blind detection, it is possible to first use the decoding method of CC and then use the decoding mode of TC or the decoding mode of TC first to decode the received bit stream by using the decoding method of CC.

Optionally, as another embodiment, the method of FIG. 2A further includes: receiving the foregoing correspondence from the radio network controller.

2B is a schematic flow chart of a channel coding process of a multi-rate voice service, in accordance with an embodiment of the present invention. The method of Figure 2B is performed by a radio network controller.

250. Configure a correspondence between at least two types of sub-flows of the voice service of each rate mode and a channel coding mode.

260. Send the corresponding relationship to the sending end, so that the sending end determines the channel coding mode for the at least two types of substreams according to the corresponding relationship, and performs channel coding on the at least two types of substreams by using the determined channel coding manner.

270: Send the correspondence to the receiving end, so that the receiving end determines the channel decoding manner for the at least two types of substreams according to the corresponding relationship, and performs channel decoding on the at least two types of substreams by using the determined channel decoding manner.

The embodiment of the present invention can set the correspondence between the substream and the channel coding/encoding mode in the different rate modes for the voice service of the radio network controller, so that the channel coding/decoding can be performed according to the above correspondence. Since the corresponding channel coding mode can be determined for the voice service of different rate modes, the coding gain of the voice service of different rate modes can be improved, thereby optimizing the transmission performance of the channel.

According to an embodiment of the present invention, for the broadband adaptive multi-rate voice service, the correspondence includes: In the 23.85 kb/s rate mode, the combination of the class A substream and the class B substream corresponds to the turbo coding mode, at 15.85 kb. In the /s~12.65 kb/s rate mode, the class A substream corresponds to the convolutional code encoding mode, the class B substream corresponds to the turbo code encoding mode, and the class A subclass in the 8.85 kb/s to 6.6 kb/s rate mode. The stream corresponds to the convolutional code encoding mode, and the B-type substream corresponds to the convolutional code encoding mode.

Optionally, as another embodiment, for a broadband adaptive multi-rate voice service, a correspondence relationship Including: In the 23.85 kb/s ~ 12.65 kb/s rate mode, the class A substream corresponds to the convolutional code encoding mode, and the class B substream corresponds to the turbo code encoding mode, at a rate of 8.85 kb/s to 6.6 kb/s. In the mode, the class A substream corresponds to the convolutional code encoding mode, and the class B substream corresponds to the convolutional code encoding mode.

Optionally, as another embodiment, for the narrowband adaptive multi-rate voice service, the correspondence includes: in a rate mode less than 12.2 kb/s, the class A substream, the class B substream, and the C class substream correspond to In the convolutional code encoding mode, in the rate mode of 12.2 kb/s, the class A substream corresponds to the convolutional code encoding mode, and the combination of the class B substream and the class C substream corresponds to the turbo code encoding mode.

3 is a schematic illustration of a channel coding process for multi-rate voice traffic in accordance with one embodiment of the present invention. The embodiment of Figure 3 is an example of the method of Figure 1. This embodiment uses the multi-rate voice service as the AMR-WB voice service as an example.

According to the embodiment of the present invention, a transmission format corresponding to different rate modes of the AMR-WB voice service may be pre-configured at the transmitting end, and the transmission format may include a rate mode and a channel coding mode of the substream of the AMR-WB voice service. Correspondence relationship. For example, in the 23.85 kb/s to 12.65 kb/s rate mode, the channel coding mode of the class A substream is 1/3 convolutional code coding, and the channel coding mode of the class B substream is l/3 Turbo code coding, at 8.85. In the kb/s~6.6kb/s rate mode, the class A substream channel coding mode is 1/3 convolutional code coding, the B type substream channel coding mode is also 1/3 convolutional code coding, and so on. See Table 3, taking the 15.85k~12.65k mode as an example to illustrate the list of channel parameters included in the transmission format. For the sake of clarity, only partial transmission channel parameters are shown in Table 3. Embodiments of the present invention may set a channel parameter list for each rate mode, or may set channel parameters for multiple rate modes in a channel parameter list.

table 3

Channel transmission type DCH DCH DCH

(A substream) (B substream) (C substream) Size of the transport block 70 181 , 213, 245 0

(bit)

TFS TF0 (bits)

TF1 (bit)

Layer 1 TF2 (bit)

TTI, ms 20 20

Channel coding type CC 1/3 TC 1/3

CRC (bits) 12 N/A 310. Determine a rate mode of the AMR-WB voice service.

For example, the transmitting end can detect the rate mode of the AMR-WB voice service when transmitting the AMR-WB voice service, and the method for detecting the rate mode of the AMR-WB voice service is not limited by the embodiment of the present invention, for example, The length of the data packet of a certain type of substream of the voice service is detected to determine the rate mode of the AMR-WB voice service. For example, by detecting the number of B-type substream bits, the full rate can be distinguished. By detecting the number of A substream bits, it is possible to distinguish 6.6 kb/s and 8.85 kb/s; for a rate of 12.65 kb/s and above, 0, 1 or 0 can be separated from the bits of the B substream when the channel division is performed. Two bits are added to the class A substreams of 12.65k, 15.85k, and 23.85k. Thus, by detecting the number of bits of the class A substream, the rate mode of the AMR-WB voice service can also be identified.

320. Find the foregoing pre-configured correspondence according to the rate mode of the AMR-WB voice service, so as to determine a channel coding mode for each substream of the AMR-WB voice service.

In addition, for class A substreams, due to their importance, the sender can also choose to perform CRC on the channel before it is encoded to improve reliability.

For example, if the sender determines the rate mode of the AMR-WB voice service is

In the 8.85 kb/s to 6.6 kb/s mode, according to the pre-configured correspondence, steps 330 and 340 are performed for the class A substream of the AMR-WB voice service, so that the CRC-based class A substream is CC coded. For the class B substream of the AMR-WB voice service, step 350 is performed to perform CC coding on the class B substream.

If the sender determines the rate mode of the AMR-WB voice service in the mode of 23.85 kb/s to 12.65 kb/s, according to the pre-configured correspondence, steps 360 and 370 are performed for the class A substream of the AMR-WB voice service. To perform CRC and CC encoding on the class A substream, and perform step 380 on the class B substream of the AMR-WB voice service, so as to perform TC encoding on the class B substream.

The transmitting end notifies the physical layer of the CRC and the channel coding through the transmission format to perform channel coding on the various substreams according to the transmission format. At the same time, the transmitting end allocates one DCH channel for each type of substream of the voice frame, and transmits the corresponding substream to the physical layer through the DCH channel.

330, CRC is performed on the class A substream, and the CRC class A substream is output.

For example, the transmitting end performs CRC on the class A substream of the rate mode 8.85 kb/s to 6.6 kb/s mode according to the transmission format.

340. Perform CC coding on the CRC class A substream, and output the coding of the class A substream. Bit.

For example, the transmitting end performs CC encoding on the class A substream whose rate mode is 8.85 kb/s to 6.6 kb/s according to the transmission format, and then performs rate matching and subsequent processing on the encoded bits of the output class A substream.

350: Perform CC coding on the B-type substream, and output coded bits of the B-type substream.

For example, the transmitting end performs CC encoding on the B-type substream whose rate mode is 8.85 kb/s to 6.6 kb/s according to the transmission format, and then performs rate matching and subsequent processing on the encoded bits of the output B-type substream.

360, CRC is performed on the class A substream, and the CRC class A substream is output.

For example, the sender CRCs a class A substream with a rate mode of 23.85 kb/s to 12.65 kb/s according to the transmission format.

370. Perform CC coding on the CRC class A substream, and output coded bits of the class A substream.

For example, the transmitting end performs CC encoding on the class A substream whose rate mode is 23.85 kb/s to 12.65 kb/s according to the transmission format, and then performs rate matching on the encoded bits of the output class A substream and subsequent processing.

380. Perform TC coding on the B-type substream, and output coded bits of the B-type substream.

For example, the transmitting end performs TC encoding on the B-type substream whose rate mode is 23.85 kb/s~12.65 kb/s according to the transmission format, and then performs rate matching on the encoded bits of the output B-type substream and subsequent processing.

In addition, the above transmission format may notify the receiving end by using the transport format combination indicator, so that the receiving end decodes the received voice service according to the transport format combination indicator.

It should be understood that the channel coding process of the above multi-rate voice service may be implemented by software, or may be implemented by hardware or firmware. When implemented in hardware, the received Class A substream and Class B substream can be switched to the corresponding channel coding channel by using a switch according to the rate mode of the AMR-WB voice service. For example, in Figure 3, when the rate mode of the AMR-WB voice service is in the 8.85 kb/s to 6.6 kb/s rate mode, the A-type sub-flow and the B-type sub-flow of the AMR-WB voice service are switched to Figure 3. The channel coding channel of the upper part of the channel, when the rate mode of the AMR-WB voice service is 23.85 kb/s to 12.65 kb/s, switching the class A substream and the class B substream of the AMR-WB voice service to On the channel coding channel of the lower half of Figure 3.

4 is a diagram showing a channel coding process of a multi-rate voice service according to another embodiment of the present invention. Intention. The embodiment of Figure 4 is an example of the method of Figure 1. This embodiment uses the multi-rate voice service as the AMR-WB voice service as an example.

According to the embodiment of the present invention, a transmission format corresponding to different rate modes of the AMR-WB voice service may be pre-configured at the transmitting end, and the transmission format may include a rate mode and a channel coding mode of the substream of the AMR-WB voice service. Correspondence relationship. For example, in the 23.85 kb/s rate mode, the channel coding mode of the combination of the class A substream and the class B substream is l/3 Turbo code coding, and in the 15.85 kb/s to 12.65 kb/s rate mode, the class A is The channel coding mode of the stream is 1/3 convolutional code coding, the channel coding mode of the B-type substream is l/3 Turbo code coding, and the channel coding of the class A substream in the 8.85 kb/s to 6.6 kb/s rate mode. The mode is 1/3 convolutional code coding, the channel coding mode of the B-type substream is also 1/3 convolutional code coding, and so on.

410. Determine a rate mode of the AMR-WB voice service.

For example, the transmitting end can detect the rate mode of the AMR-WB voice service when transmitting the AMR-WB voice service, and the method for detecting the rate mode of the AMR-WB voice service is not limited by the embodiment of the present invention, for example, The length of a certain type of substream data packet of the voice service is detected to determine a rate mode of the AMR-WB voice service.

420. Search for the foregoing pre-configured correspondence according to the rate mode of the AMR-WB voice service, and determine a channel coding manner for the substream of the AMR-WB voice service.

In the 8.85 kb/s to 6.6 kb/s mode, according to the pre-configured correspondence, steps 430 and 440 are performed on the A-type substream of the AMR-WB voice service, so as to perform CRC and CC coding on the class A substream. For the class B substream of the AMR-WB voice service, step 450 is performed to perform CC coding on the class B substream.

If the sender determines that the rate mode of the AMR-WB voice service is 15.85 kb/s to 12.65 kb/s, according to the pre-configured correspondence, steps 460 and 470 are performed for the class A substream of the AMR-WB voice service. To perform CRC and CC encoding on the class A substream, and perform step 480 on the class B substream of the AMR-WB voice service, so as to perform TC encoding on the class B substream.

If the sender determines the rate mode of the AMR-WB voice service in the rate mode of 23.85 kb/s, according to the pre-configured correspondence, step 490 is performed on the combination of the class A subflow and the class B substream. In order to perform l/3 Turbo code encoding on the combination of the class A substream and the class B substream.

430. Perform a CRC on the class A substream, and output a CRC class A substream.

440. Perform CC coding on the CRC class A substream, and output coded bits of the class A substream.

450. Perform CC coding on the B-type substream, and output coded bits of the B-type sub-stream.

460. Perform a CRC on the class A substream, and output a CRC class A substream.

For example, the sender CRCs a class A substream with a rate mode of 15.85 kb/s to 12.65 kb/s according to the transmission format.

470. Perform CC coding on the CRC class A substream, and output coded bits of the class A substream.

For example, the transmitting end performs CC encoding on the class A substream whose rate mode is 15.85 kb/s to 12.65 kb/s according to the transmission format, and then performs rate matching on the encoded bits of the output class A substream and subsequent processing.

480. Perform TC encoding on the B-type substream, and output coded bits of the B-type substream.

For example, the transmitting end performs TC encoding on the B-type substream whose rate mode is 15.85 kb/s to 12.65 kb/s according to the transmission format, and then performs rate matching on the encoded bits of the output B-type substream and subsequent processing.

490. Combine the class A subflow and the class B subflow to generate a combination of the class A subflow and the class B subflow. For example, the sender combines the class A substream and the class B substream, that is, uses a dedicated transport channel (DCH) to transport the class A substream and the class B substream. Here, the combination of the class A subflow and the class B subflow refers to a data stream in which the class A subflow and the class B subflow are combined.

491. Perform CRC on the combination of the class A subflow and the class B subflow, and output a combination of the CRC class A subflow and the class B subflow. 493. Perform TC coding on a combination of the CRC class A substream and the class B substream, and generate a coded bit of the combination of the class A substream and the class B substream.

It should be understood that the channel coding process of the above multi-rate voice service may be implemented by software, or may be implemented by hardware or firmware. When implemented in hardware, the received Class A substream and Class B substream can be switched to the corresponding channel coding channel by using a switch according to the rate mode of the AMR-WB voice service. For example, in Figure 4, when the rate mode of the AMR-WB voice service is in the 8.85 kb/s to 6.6 kb/s rate mode, the A-type sub-flow and the B-type sub-flow of the AMR-WB voice service are switched to Figure 3. The channel coding channel of the upper part of the channel, when the rate mode of the AMR-WB voice service is 15.85 kb/s to 12.65 kb/s, switching the class A substream and the class B substream of the AMR-WB voice service to On the channel coding channel in the middle of FIG. 3, when the rate mode of the AMR-WB voice service is 23.85 kb/s, the class A substream and the class B substream of the AMR-WB voice service are switched to the middle of FIG. On the channel coding channel.

Figure 5 is a schematic illustration of a channel coding process for multi-rate voice traffic in accordance with yet another embodiment of the present invention. The embodiment of Figure 5 is an example of the method of Figure 1.

The embodiment of Fig. 5 is different from the embodiment of Fig. 4 in that 510 to 593 of Fig. 5 are the same as 410 to 493 of Fig. 4, and a detailed description is omitted as appropriate.

Different from the embodiment of FIG. 4, this embodiment increases the step of the transmitter configuring the rate matching factor according to the rate mode. For example, a transmission format corresponding to different rate modes of the AMR-WB voice service may be pre-configured at the transmitting end, and the transmission format may include a correspondence between the rate mode and a rate matching factor of the AMR-WB voice service.

595. The physical layer configures a corresponding rate matching factor according to different rates of the AMR-WB, and performs rate matching on the encoded voice service.

596, the physical layer pairs the coded bits of the class A substream generated by step 540 and the step 550 generated

The coded bits of the class B substream are rate matched.

597. The physical layer performs rate matching on the coded bits of the class A substream generated in step 570 and the coded bits of the class B substream generated in step 580.

598. The physical layer performs rate matching on the coded bits of the combination of the class A substream and the class B substream generated in step 593.

6 is a diagram showing a channel decoding process for multi-rate voice traffic according to an embodiment of the present invention. Intention. The embodiment of Figure 6 is an example of the method of Figure 2A and corresponds to the embodiment of Figure 3. According to the embodiment of the present invention, a transmission format corresponding to different rate modes of the AMR-WB voice service may be pre-configured at the transmitting end, and the transmission format may include a rate mode and a channel coding mode of the substream of the AMR-WB voice service. Correspondence relationship. For example, in the rate mode of 23.85 kb/s to 12.65 kb/s, the channel decoding mode of the class A substream is a decoding mode of 1/3 convolutional code, for example, using LVA decoding mode, and class B substreaming. The channel coding mode is a decoding method of the l/3 Turbo code. For example, the MLP decoding mode is used. In the 8.85 kb/s to 6.6 kb/s rate mode, the class A substream channel coding mode is 1/3 convolutional code. The decoding method, for example, adopts the LVA decoding method, and the B-type sub-stream channel coding method is also a decoding method of 1/3 convolutional code, for example, a VA decoding method or the like.

610. Determine a channel decoding manner of each substream according to a correspondence between the foregoing rate mode and a channel coding mode of a substream of the AMR-WB voice service.

In the 23.85 kb/s to 12.65 kb/s rate mode, steps 620 and 630 are performed to perform LVA decoding and de-CRC (De-CRC) calculation on the class A substream, and step 640 is performed to class B. The stream performs MLP decoding.

In the 8.85 kb/s to 6.6 kb/s rate mode, steps 650 and 660 are performed to perform LVA decoding and De-CRC on the class A substream, and step 670 is performed to perform VA decoding on the class B substream. .

620. Decode the received class A bit stream according to the determined channel decoding manner to obtain a class A substream that is decoded by the CRC.

630. Perform a deCRC calculation on the decoded class A substream to obtain a restored class A substream.

640. Decode the received class B bit stream according to the determined channel decoding manner, and obtain the decoded class B substream as the restored class B substream.

650. Decode the received Class A bit stream according to the determined channel decoding manner to obtain a Type A substream that is decoded by the CRC.

660. Perform a de-CRC (De-CRC) calculation on the decoded class A substream to obtain a recovered class A substream.

670. Decode the received class B bitstream according to the determined channel decoding manner, and obtain the decoded class B substream as the restored class B substream.

Figure 7 is a schematic illustration of a channel decoding process for multi-rate voice traffic in accordance with another embodiment of the present invention. The embodiment of Figure 7 is an example of the method of Figure 2A and corresponds to the embodiment of Figure 4.

According to an embodiment of the present invention, the AMR-WB voice service may be pre-configured at the receiving end. The transmission format corresponding to the rate mode, which may include different rate modes.

Correspondence between substream and channel coding mode of AMR-WB voice service. For example, in the 23.85 kb/s mode, the A substream and the B substream are decoded by the l/3 Turbo code, for example, the MLP decoding method, and the eight and B substreams are decoded together at 15.85 kb/s~ In the 12.65 kb/s rate mode, the channel decoding mode of the class A substream is the decoding mode of the 1/3 convolutional code. For example, the LVA decoding mode is adopted, and the channel coding mode of the class B substream is the l/3 Turbo code. The decoding method, for example, adopts the MLP decoding mode. In the 8.85 kb/s to 6.6 kb/s rate mode, the class A substream channel coding mode is a 1/3 convolutional code decoding method, for example, using LVA. In the decoding mode, the B-type sub-stream channel coding method is also a decoding method of a 1/3 convolutional code, for example, a VA decoding method or the like.

710. Determine a channel decoding manner of each substream according to a correspondence between the foregoing rate mode and a channel coding mode of a substream of the AMR-WB voice service.

In the 15.85 kb/s to 12.65 kb/s rate mode, steps 620 and 630 are performed to perform LVA decoding and De-CRC on the class A substream, and step 640 is performed to perform MLP decoding on the class B substream. .

In the 23.85 kb/s rate mode, steps 771, 772, and 773 are performed to perform MLP decoding, De-CRC, and de-sampling on the combined bit stream of the class A substream and the class B substream.

720. Decode the received Class A bit stream according to the determined channel decoding manner to obtain a Type A substream that is decoded by the CRC.

730. Perform a de-CRC (De-CRC) calculation on the decoded class A substream to obtain a recovered class A substream.

740. Decode the received class B bit stream according to the determined channel decoding manner, and obtain the decoded class B substream as the restored class B substream.

750. Decode the received class A bit stream according to the determined channel decoding manner to obtain a CRC-decoded class A substream.

760. Perform a CRC (De-CRC) calculation on the decoded class A substream to obtain a recovered class A substream.

770: Decode the received class B bit stream according to the determined channel decoding manner, to obtain The decoded class B subflow is used as the recovered class B subflow.

771. Decode a combined bit stream of the received class A substream and the class B substream to obtain a combination of the CRC type A substream and the class B substream.

772: Perform De-CRC on the combination of the CRC class A substream and the class B substream to obtain a combination of the class A substream and the class B substream.

773. Perform De-combining on the combination of the A-type sub-flow and the B-type sub-flow to obtain the restored A-type sub-flow and the restored B-type sub-flow.

It should be understood that the foregoing embodiment is described by taking an AMR-WB voice service as an example. The above channel coding and decoding process is also applicable to the AMR-NB voice service. The difference is that different channel coding modes can be configured for different rates. And channel decoding mode.

Figure 8 is a schematic block diagram of a channel coding apparatus 800 for multi-rate voice traffic according to an embodiment of the present invention. The channel coding apparatus 800 includes: a determination module 810 and an encoding module 820.

The determining module 810 determines a rate mode of the voice service, where the voice service includes at least two types of substreams, and determines the at least two types of substreams according to a rate mode of the voice service and a correspondence between the at least two types of substreams and the channel coding mode. Channel coding mode, wherein there is a correspondence between at least two types of substreams of each rate mode and a channel coding mode. The encoding module 820 performs channel coding on at least two types of substreams using the determined channel coding manner.

The embodiment of the present invention may determine a channel coding mode for a substream of a voice service according to a rate mode of the voice service, and perform channel coding on the substream of the voice service by using the determined channel coding mode. Since the corresponding channel coding mode can be determined for the voice service of different rate modes, the coding gain of the voice service of different rate modes can be improved, thereby optimizing the transmission performance of the channel.

According to an embodiment of the present invention, the determining module 810 selects a convolutional code coding mode as a channel coding mode of at least two types of substreams when the rate mode of the voice service indicates that the rate of the voice service is within the first rate interval; When the rate mode indicates that the rate of the voice service is in the second rate interval, the convolutional code coding mode is selected as a channel coding mode of a part of the at least two types of substreams, and the Turbo code coding mode is selected as the at least two types of substreams. The channel coding mode of another part of the substream.

According to an embodiment of the present invention, the multi-rate voice service is a broadband adaptive multi-rate voice service, and the at least two types of sub-flows include a class A sub-flow and a class B sub-flow, wherein the determining module 810 indicates a voice service in a rate mode of the voice service. When the rate is less than the first threshold, the convolutional code coding mode is selected separately. For the encoding mode of the class A substream and the class B substream, the determining module 810 selects the convolutional code encoding mode as the class A when the rate mode of the voice service indicates that the rate of the voice service is greater than or equal to the first threshold and less than or equal to the second threshold. The encoding method of the stream, and the Turbo code encoding method is selected as the encoding method of the class B substream.

According to an embodiment of the invention, the first threshold is 12.65 kb/s, the second threshold is 23.85 kb/s, or the first threshold is 12.65 kb/s and the second threshold is 15.85 kb/s.

According to an embodiment of the present invention, when the second threshold is 15.85 kb/s, the determining module 810 selects the Turbo code coding mode as the class A when the rate mode of the voice service indicates that the rate of the voice service is greater than or equal to the third threshold. A combination of substream and class B substreams, where the third threshold is 23.85 kb/s.

According to an embodiment of the present invention, when the rate mode of the voice service indicates that the rate of the voice service is within the second rate interval, the determining module 810 selects the Turbo code coding mode as a part of the at least two types of substreams or all of the substreams. The combined encoding method.

According to an embodiment of the present invention, the multi-rate voice service is a broadband adaptive multi-rate voice service, and the at least two types of sub-flows include a class A sub-flow and a class B sub-flow, wherein the determining module 810 indicates a voice service in a rate mode of the voice service. When the rate is greater than or equal to the third threshold, the Turbo code coding mode is selected as the coding mode of the combination of the class A substream and the class B substream, wherein the third threshold is 23.85 kb/s.

According to an embodiment of the present invention, the multi-rate voice service is a narrowband adaptive multi-rate voice service, and the at least two types of sub-flows include a class A sub-flow, a B-type sub-flow, and a C-type sub-flow, wherein the rate of the voice service is determined by the module 810. When the mode indicates that the rate mode of the voice service is greater than or equal to the fourth threshold, the convolutional code coding mode is selected as the coding mode of the class A substream, and the turbo code coding mode is selected as the combination coding mode of the B class substream and the C class substream. When the rate mode of the voice service indicates that the rate mode of the voice service is less than the fourth threshold, the convolutional code coding mode is selected as the coding mode of the A-type sub-flow, the B-type sub-flow, and the C-type sub-flow, and the fourth threshold is 12.2. Kb/s.

Optionally, as another embodiment, the channel coding apparatus of FIG. 8 further includes: a generating module 830, configured to generate a transport format combination indicator; and a sending module 840, configured to send the transport format combination indicator to the receiving end, The transport format combination indicator is used to indicate a transport format combination of at least two types of substreams of the voice service, and the transport format combination includes a correspondence.

According to an embodiment of the present invention, the channel coding apparatus 800 of FIG. 8 further includes: 850 a receiving module, configured to receive the correspondence from the radio network controller.

9 is a channel decoding apparatus 900 for multi-rate voice traffic in accordance with one embodiment of the present invention. Schematic diagram of the structure. The channel coding apparatus 900 includes: a receiving module 910, a determining module 920, and a decoding module 930.

The receiving module 910 receives the voice service, and the voice service includes at least two types of sub-flows. The determining module 920 determines a channel decoding manner of at least two types of substreams according to a rate mode and a correspondence between at least two types of substreams and a channel coding manner, where at least two types of substreams and channel coding modes of each rate mode are used. There is a correspondence between them. The decoding module 930 decodes at least two types of substreams using the determined channel decoding mode.

The embodiment of the present invention may determine a channel decoding manner for a substream of a voice service according to a rate mode of a voice service and a correspondence between a substream and a channel coding manner, and perform channel on the substream of the voice service by using the determined channel decoding manner. Decoding. Since the corresponding channel decoding mode can be determined for voice services of different rate modes, the channel transmission performance can be optimized.

According to an embodiment of the present invention, the determining module 920 selects a decoding mode of the convolutional code as a channel decoding mode of at least two types of substreams when the rate mode of the voice service indicates that the rate of the voice service is within the first rate interval; When the rate mode of the voice service indicates that the rate of the voice service is in the second rate interval, the decoding mode of the convolutional code is selected as the channel decoding mode of a part of the substreams of the at least two types of substreams, and the decoding mode of the turbo code is selected. A channel decoding method that is another partial substream of at least two types of substreams.

According to an embodiment of the present invention, the multi-rate voice service is a broadband adaptive multi-rate voice service, and at least two types of sub-flows include a class A sub-flow and a class B sub-flow, wherein the determining module 920 indicates a voice service in a rate mode of the voice service. When the rate is less than the first threshold, the decoding mode of the convolutional code is respectively selected as the channel decoding mode of the class A substream and the class B substream, and the rate mode of the determining module 920 indicates that the rate of the voice service is greater than or equal to the first. When the threshold is less than or equal to the second threshold, the decoding mode of the convolutional code is selected as the channel decoding mode of the class A substream, and the decoding mode of the turbo code is selected as the channel decoding mode of the class B substream.

According to the embodiment of the present invention, when the second threshold is 15.85 kb/s, the determining module 920 selects the decoding mode of the Turbo code as the A when the rate mode of the voice service indicates that the rate of the voice service is greater than or equal to the third threshold. A channel decoding method combining a class substream and a class B substream, wherein the third threshold is 23.85 kb/s.

According to an embodiment of the present invention, the determining module 920 indicates the voice industry in a rate mode of the voice service. When the rate of the service is in the second rate interval, the decoding mode of the turbo code is selected as a channel decoding mode of a combination of a part of the substreams or all of the substreams of the at least two types of substreams.

According to an embodiment of the present invention, the multi-rate voice service is a broadband adaptive multi-rate voice service, and at least two types of sub-flows include a class A sub-flow and a class B sub-flow, wherein the determining module 920 indicates a voice service in a rate mode of the voice service. When the rate is greater than or equal to the third threshold, the decoding mode of the turbo code is selected as the channel decoding mode of the combination of the class A substream and the class B substream, wherein the third threshold is 23.85 kb/s.

According to an embodiment of the present invention, the multi-rate voice service is a narrowband adaptive multi-rate voice service, and the at least two types of sub-flows include a class A sub-flow, a B-type sub-flow, and a C-type sub-flow, wherein the rate of the voice service is determined by the module 920. When the mode indicates that the rate mode of the voice service is greater than or equal to the fourth threshold, the decoding mode of the convolutional code is selected as the channel decoding mode of the class A substream, and the decoding mode of the turbo code is selected as the class B substream and the C class. The combined channel decoding mode of the stream, when the rate mode of the voice service indicates that the rate mode of the voice service is less than the fourth threshold, respectively selecting the decoding mode of the convolutional code as the class A substream, the class B substream, and the C class sub The channel decoding mode of the stream has a fourth threshold of 12.2 kb/s.

Optionally, in another embodiment, the receiving module 910 is further configured to receive a transport format combination indicator sent by the sender, where the transport format combination indicator indicates a transport format of at least two types of substreams of the voice service, where the transport format includes: a correspondence between a rate mode and a channel coding mode of at least two types of substreams, wherein the determining module 920 is configured according to a correspondence between a rate mode indicated by the transport format combination indicator and a channel decoding mode of at least two types of substreams, The channel decoding mode is determined for at least two types of substreams.

According to an embodiment of the invention, the determining module 920 determines the channel decoding mode of at least two types of substreams by means of blind detection.

Optionally, as another embodiment, the receiving module 910 is further configured to receive the foregoing correspondence from the radio network controller.

FIG. 10 is a schematic block diagram of a radio network controller 1000 in accordance with an embodiment of the present invention. The radio network controller 1000 includes a configuration module 1010 and a transmitting module 1020.

The configuration module 1010 configures a correspondence between at least two types of sub-flows of the voice service of each rate mode and a channel coding mode. The sending module 1020 sends the corresponding relationship to the sending end, so that the sending end determines the channel coding mode for the at least two types of substreams according to the corresponding relationship, and performs channel coding on the at least two types of substreams by using the determined channel coding manner, and the corresponding relationship is performed. Sending to the receiving end, so that the receiving end determines the channel decoding mode for the at least two types of substreams according to the corresponding relationship, and adopts the determined The channel decoding method performs channel decoding on at least two types of substreams.

According to an embodiment of the present invention, for the broadband adaptive multi-rate voice service, the correspondence includes: In the 23.85 kb/s rate mode, the combination of the class A substream and the class B substream corresponds to the turbo coding mode, at 15.85 kb. In the /s~12.65 kb/s rate mode, the class A substream corresponds to the convolutional code encoding mode, the class B substream corresponds to the turbo code encoding mode, and the class A subclass in the 8.85 kb/s to 6.6 kb/s rate mode. The stream corresponds to a convolutional code encoding mode, and the B-type substream corresponds to a convolutional code encoding mode.

Optionally, as another embodiment, for the broadband adaptive multi-rate voice service, the correspondence includes: in the 23.85 kb/s to 12.65 kb/s rate mode, the class A substream corresponds to the convolutional code coding mode, B The class substream corresponds to the turbo code coding mode. In the 8.85 kb/s to 6.6 kb/s rate mode, the class A substream corresponds to the convolutional code coding mode, and the class B substream corresponds to the convolutional code coding mode; Adapt to multi-rate voice services.

Figure 11 is a schematic block diagram of a channel coding apparatus 1100 for multi-rate voice traffic according to an embodiment of the present invention. The channel coding apparatus 1100 includes a processor 1110 and a memory 1120.

The processor 1110 calls the information stored in the memory 1120 to determine a rate mode of the voice service, where the voice service includes at least two types of sub-flows, according to a rate mode of the voice service and a correspondence between at least two types of sub-flows and channel coding modes. Determining a channel coding mode for at least two types of substreams, wherein there is a correspondence between at least two types of substreams of each rate mode and a channel coding mode, and performing channel coding on at least two types of substreams by using the determined channel coding manner coding.

The embodiment of the present invention may determine a channel coding mode for a substream of a voice service according to a rate mode of a voice service and a corresponding relationship between a substream and a channel coding mode, and perform channel coding on the substream of the voice service by using the determined channel coding mode. Since the corresponding channel coding mode can be determined for voice services of different rate modes, the coding of voice services in different rate modes can be improved. Gain, which optimizes channel transmission performance.

According to an embodiment of the present invention, when the rate mode of the voice service indicates that the rate of the voice service is within the first rate interval, the processor 1110 selects a convolutional code coding mode as a channel coding mode of at least two types of substreams; When the rate mode indicates that the rate of the voice service is in the second rate interval, the convolutional code coding mode is selected as a channel coding mode of a part of the at least two types of substreams, and the Turbo code coding mode is selected as the at least two types of substreams. The channel coding mode of another part of the substream.

According to an embodiment of the present invention, the multi-rate voice service is a broadband adaptive multi-rate voice service, and the at least two types of sub-flows include a class A sub-flow and a class B sub-flow, wherein the rate mode of the processor 1110 in the voice service indicates the voice service. When the rate is less than the first threshold, the convolutional code coding mode is selected as the coding mode of the A-type sub-flow and the B-type sub-flow respectively, and the rate mode of the voice service of the processor 1110 indicates that the rate of the voice service is greater than or equal to the first threshold is less than or equal to the first threshold. In the case of the two thresholds, the convolutional code coding mode is selected as the coding mode of the class A substream, and the turbo code coding mode is selected as the coding mode of the class B substream.

According to an embodiment of the present invention, when the second threshold is 15.85 kb/s, the processor 1110 selects the Turbo code coding mode as the class A when the rate mode of the voice service indicates that the rate of the voice service is greater than or equal to the third threshold. A combination of substream and class B substreams, where the third threshold is 23.85 kb/s.

According to an embodiment of the present invention, when the rate mode of the voice service indicates that the rate of the voice service is located in the second rate interval, the processor 1110 selects a turbo code coding mode as a part of the at least two types of substreams or all of the substreams. The combined encoding method.

According to an embodiment of the present invention, the multi-rate voice service is a broadband adaptive multi-rate voice service, and the at least two types of sub-flows include a class A sub-flow and a class B sub-flow, wherein the rate mode of the processor 1110 in the voice service indicates the voice service. When the rate is greater than or equal to the third threshold, the Turbo code coding mode is selected as the coding mode of the combination of the class A substream and the class B substream, wherein the third threshold is 23.85 kb/s.

According to an embodiment of the present invention, the multi-rate voice service is a narrowband adaptive multi-rate voice service, and the at least two types of sub-flows include a class A sub-flow, a B-type sub-flow, and a C-type sub-flow, wherein the rate of the processor 1110 in the voice service When the mode indicates that the rate mode of the voice service is greater than or equal to the fourth threshold, the convolutional code coding mode is selected as the coding mode of the class A substream, and the Turbo code coding mode is selected as the B. The coding mode of the combination of the sub-flow and the C-type sub-flow, when the rate mode of the voice service indicates that the rate mode of the voice service is less than the fourth threshold, respectively selecting the convolutional code coding mode as the A-type sub-flow, the B-type sub-flow, and The coding method of the C-type substream has a fourth threshold of 12.2 kb/s.

Optionally, in another embodiment, the processor 1110 is further configured to generate a transport format combination indicator, where the channel coding apparatus 1110 further includes: a transmitter 1130, configured to send a transport format combination indicator to the receive end, where the transport format The combination indicator is used to indicate a transport format combination of at least two types of substreams of the voice service, and the transport format combination includes a correspondence.

Optionally, as another embodiment, the channel coding apparatus 1110 of FIG. 11 further includes: a receiver 1140, configured to receive the foregoing correspondence from the radio network controller.

12 is a channel decoding apparatus for multi-rate voice service according to an embodiment of the present invention.

Schematic diagram of 1100. Channel decoding device 1200 includes a receiver 1210, a processor 1220, and a memory 1230.

The receiver 1210 receives voice services, and the voice services include at least two types of substreams. The processor 1220 calls the information stored in the memory 1230, and determines a channel decoding manner of at least two types of substreams according to a rate mode and a correspondence between at least two types of substreams and a channel coding manner, where each rate mode There is a correspondence between at least two types of substreams and channel coding modes, and channel decoding is performed on at least two types of substreams by using the determined channel decoding manner.

According to an embodiment of the present invention, when the rate mode of the voice service indicates that the rate of the voice service is within the first rate interval, the processor 1220 selects a decoding mode of the convolutional code as a channel decoding mode of at least two types of substreams; When the rate mode of the voice service indicates that the rate of the voice service is in the second rate interval, the decoding mode of the convolutional code is selected as the channel decoding mode of a part of the substreams of the at least two types of substreams, and the decoding mode of the turbo code is selected. A channel decoding method that is another partial substream of at least two types of substreams.

According to an embodiment of the present invention, the multi-rate voice service is a broadband adaptive multi-rate voice service, and the at least two types of sub-flows include a class A sub-flow and a class B sub-flow, wherein the rate mode of the processor 1220 in the voice service indicates the voice service. When the rate is less than the first threshold, the decoding mode of the convolutional code is separately selected as the channel decoding mode of the class A substream and the class B substream, and the processor 1220 is in the rate mode of the voice service. When the rate indicating that the voice service is greater than or equal to the first threshold is less than or equal to the second threshold, the decoding mode of the convolutional code is selected as the channel decoding mode of the class A substream, and the decoding mode of the turbo code is selected as the class B substream. Channel decoding method.

According to an embodiment of the present invention, in a case where the second threshold is 15.85 kb/s, the processor 1220 selects a decoding mode of the turbo code as the A when the rate mode of the voice service indicates that the rate of the voice service is greater than or equal to the third threshold. A channel decoding method combining a class substream and a class B substream, wherein the third threshold is 23.85 kb/s.

According to an embodiment of the present invention, when the rate mode of the voice service indicates that the rate of the voice service is located in the second rate interval, the processor 1220 selects a decoding mode of the turbo code as a part of the substream or all of the at least two types of substreams. A combined channel decoding method of streams.

According to an embodiment of the present invention, the multi-rate voice service is a broadband adaptive multi-rate voice service, and the at least two types of sub-flows include a class A sub-flow and a class B sub-flow, wherein the rate mode of the processor 1220 in the voice service indicates the voice service. When the rate is greater than or equal to the third threshold, the channel decoding mode of the turbo code is selected as the channel decoding mode of the combination of the class A substream and the class B substream, wherein the third threshold is 23.85 kb/s.

According to an embodiment of the present invention, the multi-rate voice service is a narrowband adaptive multi-rate voice service, and the at least two types of sub-flows include a class A sub-flow, a B-type sub-flow, and a C-type sub-flow, wherein the rate of the processor 1220 in the voice service When the mode indicates that the rate mode of the voice service is greater than or equal to the fourth threshold, the decoding mode of the convolutional code is selected as the channel decoding mode of the class A substream, and the decoding mode of the turbo code is selected as the class B substream and the C class. The combined channel decoding mode of the stream, when the rate mode of the voice service indicates that the rate mode of the voice service is less than the fourth threshold, respectively selecting the channel decoding mode of the convolutional code as the class A substream, the class B substream, and the C class The channel decoding mode of the substream, the fourth threshold is 12.2 kb/s.

Optionally, in another embodiment, the receiver 1210 is further configured to receive a transport format combination indicator sent by the sender, where the transport format combination indicator indicates a transport format of at least two types of substreams of the voice service, where the transport format includes: a correspondence between a rate mode and a channel coding mode of at least two types of substreams, wherein the processor 1220 is configured according to a correspondence between a rate mode indicated by the transport format combination indicator and a channel coding mode of at least two types of substreams, Two types of substreams determine the channel decoding mode.

According to an embodiment of the present invention, the processor 1220 determines at least two types of sub-types by means of blind detection. The channel decoding method of the stream.

Optionally, as a further embodiment, the receiver 1210 is further configured to receive the foregoing correspondence from the radio network controller.

Figure 13 is a schematic block diagram of a radio network controller 1300 for multi-rate voice traffic, in accordance with one embodiment of the present invention. The radio network controller 1300 includes a processor 1310, a memory 1320, and a transmitter 1330.

The processor 1310 invokes information in the memory 1320 for configuring a correspondence between at least two types of substreams of each rate mode voice service and a channel coding mode. The transmitter 1330 sends the correspondence to the sending end, so that the sending end determines the channel coding mode for the at least two types of substreams according to the correspondence, and performs channel coding on the at least two types of substreams by using the determined channel coding manner, and The corresponding relationship is sent to the receiving end, so that the receiving end determines the channel decoding mode for the at least two types of substreams according to the correspondence, and performs channel decoding on the at least two types of substreams by using the determined channel decoding manner.

According to an embodiment of the present invention, for the broadband adaptive multi-rate voice service, the correspondence includes: In the 23.85 kb/s rate mode, the combination of the class A substream and the class B substream corresponds to the turbo code coding mode, at 15.85 In the kb/s~12.65 kb/s rate mode, the class A substream corresponds to the convolutional code encoding mode, and the class B substream corresponds to the turbo code encoding mode. The class A is in the 8.85 kb/s to 6.6 kb/s rate mode. The substream corresponds to a convolutional code encoding mode, and the B-type substream corresponds to a convolutional code encoding mode.

Optionally, as another embodiment, for the broadband adaptive multi-rate voice service, the correspondence includes: in a rate mode of 23.85 kb/s to 12.65 kb/s, the class A substream corresponds to a convolutional code coding mode, The class B substream corresponds to the turbo code coding mode. In the 8.85 kb/s to 6.6 kb/s rate mode, the class A substream corresponds to the convolutional code coding mode, and the class B substream corresponds to the convolutional code coding mode; Adaptive multi-rate voice service.

Optionally, as another embodiment, for the narrowband adaptive multi-rate voice service, the correspondence includes: in a rate mode less than 12.2 kb/s, the class A substream, the B class substream, and the C class substream correspond to In the convolutional code encoding mode, in the rate mode of 12.2 kb/s, the class A substream corresponds to the convolutional code encoding mode, and the combination of the class B substream and the class C substream corresponds to the turbo code encoding mode.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. Professionals can use different parties for each specific application The described functionality is implemented, but such implementation should not be considered to be beyond the scope of the invention.

It will be apparent to those skilled in the art that, for the convenience of the description and the cleaning process, the specific operation of the system, the device and the unit described above may be referred to the corresponding processes in the foregoing method embodiments, and details are not described herein again.

In the several embodiments provided herein, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed. In addition, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.

The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention, which is essential to the prior art or part of the technical solution, may be embodied in the form of a software product stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the appended claims.

Claims

Rights request

1. A channel coding method for multi-rate voice services, characterized in that it includes: determining a rate mode of the voice service, wherein the voice service includes at least two types of substreams; according to the rate mode of the voice service and the at least The corresponding relationship between the two types of substreams and the channel coding method, determining the channel coding method for the at least two types of substreams, wherein there is a corresponding relationship between at least two types of substreams of each rate mode and the channel coding method;

The determined channel coding method is used to perform channel coding on the at least two types of substreams.

2. The method according to claim 1, characterized in that, according to the rate mode of the voice service and the corresponding relationship between the at least two types of sub-streams and the channel coding method, the at least two types of sub-streams are: The stream determines the channel encoding method, including:

When the rate mode of the voice service indicates that the rate of the voice service is within the first rate interval, select a convolutional code encoding method as the channel coding method of the at least two types of substreams;

When the rate mode of the voice service indicates that the rate of the voice service is within the second rate interval, a convolutional code encoding method is selected as a channel coding method for a part of the substreams in the at least two types of substreams, and a Turbo code is selected The coding method is used as the channel coding method of another part of the substreams among the at least two types of substreams.

3. The method according to claim 2, characterized in that, the multi-rate voice service is a broadband adaptive multi-rate voice service, and the at least two types of sub-streams include class A sub-streams and class B sub-streams, wherein the When the rate mode of the voice service indicates that the rate of the voice service is within the first rate interval, selecting a convolutional coding method as the channel coding method of the at least two types of substreams includes:

When the rate mode of the voice service indicates that the rate of the voice service is less than the first threshold, a convolutional code encoding method is selected as the channel coding method of the Class A substream and the Class B substream, respectively,

When the rate mode of the voice service indicates that the rate of the voice service is within the second rate interval, the convolutional code encoding method is selected as the channel coding method of a part of the substreams in the at least two types of substreams, and Turbo is selected. The code coding method as the channel coding method of another part of the substreams among the at least two types of substreams includes:

When the rate mode of the voice service indicates that the rate of the voice service is greater than or equal to the first threshold and less than or equal to the second threshold, select the convolutional code encoding method as the channel encoding method of the Class A substream, and select the The Turbo code coding method is used as the channel coding method of the Class B substream. Mode.

4. The method according to claim 3, characterized in that the first threshold is 12.65 kb/s, the second threshold is 23.85 kb/s,

or,

The first threshold is 12.65kb/s, and the second threshold is 15.85kb/s.

5. The method according to claim 4, characterized in that, when the second threshold is 15.85kb/s, the rate mode according to the voice service and the at least two types of substreams and channels Correspondence between coding modes, determining channel coding modes for the at least two types of substreams, further comprising: selecting the voice service when the rate mode of the voice service indicates that the rate of the voice service is greater than or equal to a third threshold. The Turbo code coding method is a channel coding method for a combination of the Class A substream and the Class B substream, where the third threshold is 23.85 kb/s.

6. The method according to claim 1, characterized in that, according to the rate mode of the voice service and the corresponding relationship between the at least two types of sub-streams and the channel coding method, the at least two types of sub-streams are The stream determines the channel encoding method, including:

When the rate mode of the voice service indicates that the rate of the voice service is within the second rate interval, a Turbo code encoding method is selected as the channel coding for a combination of a part of the substreams or all of the at least two types of substreams. Way.

7. The method according to claim 6, characterized in that the multi-rate voice service is a broadband adaptive multi-rate voice service, and the at least two types of sub-streams include class A sub-streams and class B sub-streams, wherein the When the rate mode of the voice service indicates that the rate of the voice service is within the second rate interval, the Turbo code encoding method is selected as a channel for a combination of a part of the substreams or all of the at least two types of substreams. Coding method, including:

When the rate mode of the voice service indicates that the rate of the voice service is greater than or equal to a third threshold, select the Turbo code encoding method as the channel coding method for the combination of the Class A substream and the Class B substream, The third threshold is 23.85 kb/s.

8. The method according to claim 6, characterized in that the multi-rate voice service is a narrowband adaptive multi-rate voice service, and the at least two types of sub-streams include class A sub-streams, class B sub-streams and class C sub-streams. substream,

Wherein, when the rate mode of the voice service indicates that the rate of the voice service is within the second rate interval, a Turbo code encoding method is selected as a combination of a part of the substreams or all of the substreams in the at least two types of substreams. Channel coding methods, including: When the rate mode of the voice service indicates that the rate mode of the voice service is greater than or equal to the fourth threshold, select the convolutional code encoding method as the channel coding method of the Class A substream, and select the Turbo code encoding method The mode is the channel coding mode of the combination of the Class B substream and the Class C substream,

When the rate mode of the voice service indicates that the rate mode of the voice service is less than a fourth threshold, a convolutional code encoding method is selected as the Class A substream, the Class B substream and the Class C substream respectively. Channel coding method, the fourth threshold is 12.2kb/s.

9. The method according to any one of claims 1 to 8, further comprising: generating a transport format combination indicator, and sending the transport format combination indicator to the receiving end, wherein the transmission format combination indicator The format combination indicator is used to indicate transmission format combinations of at least two types of substreams of the voice service, and the transmission format combination includes the corresponding relationship.

10. The method according to any one of claims 1 to 9, further comprising: receiving the corresponding relationship from a radio network controller.

11. A channel decoding method for multi-rate voice services, characterized in that it includes: receiving voice services, where the voice services include at least two types of substreams;

Determine the channel decoding method of the at least two types of substreams according to the rate mode and the correspondence between the at least two types of substreams and the channel coding method, wherein, at least two types of substreams of each rate mode and the channel coding method There is a correspondence between methods;

The determined channel decoding method is used to perform channel decoding on the at least two types of substreams.

12. The method according to claim 11, characterized in that: determining the channels of the at least two types of substreams based on the rate mode and the correspondence between the at least two types of substreams and channel coding methods. Decoding methods include:

When the rate mode of the voice service indicates that the rate of the voice service is within the first rate interval, select the decoding method of the convolutional code as the channel decoding method of the at least two types of substreams; when the voice service When the rate mode indicates that the rate of the voice service is within the second rate interval, the decoding method of the convolutional code is selected as the channel decoding method of a part of the substreams in the at least two types of substreams, and the decoding method of the Turbo code is selected. The coding mode is used as the channel decoding mode of another part of the substreams among the at least two types of substreams.

13. The method according to claim 12, characterized in that, the multi-rate voice service is a broadband adaptive multi-rate voice service, and the at least two types of sub-streams include class A sub-streams and class B sub-streams, Wherein, when the rate mode of the voice service indicates that the rate of the voice service is within the first rate interval, selecting the decoding method of the convolutional code as the channel decoding method of the at least two types of substreams includes:

When the rate mode of the voice service indicates that the rate of the voice service is less than the first threshold, the decoding method of the convolutional code is selected as the channel decoding method of the Class A substream and the Class B substream, respectively,

Wherein, when the rate mode of the voice service indicates that the rate of the voice service is within the second rate interval, the decoding method of the convolutional code is selected as the channel decoding method for a part of the substreams in the at least two types of substreams. coding mode, selecting the decoding mode of Turbo code as the channel decoding mode of another part of the substreams in the at least two types of substreams, including:

When the rate mode of the voice service indicates that the rate of the voice service is greater than or equal to the first threshold and less than or equal to the second threshold, select the decoding method of the convolutional code as the channel decoding method of the Class A substream, And the decoding method of the Turbo code is selected as the channel decoding method of the Class B substream.

14. The method according to claim 13, characterized in that the first threshold is

12.65kb/s, the second threshold is 23.85 kb/s,

or,

The first threshold is 12.65kb/s, and the second threshold is 15.85kb/s.

15. The method according to claim 14, characterized in that, when the second threshold is 15.85kb/s, the method according to the rate mode and the at least two types of substreams and channel coding methods determine the channel decoding mode of the at least two types of substreams, further including: when the rate mode of the voice service indicates that the rate of the voice service is greater than or equal to a third threshold, selecting the Turbo code The decoding mode is a decoding mode of a combination of the Class A substream and the Class B substream, wherein the third threshold is 23.85 kb/s.

16. The method according to claim 11, characterized in that: determining the channels of the at least two types of substreams based on the correspondence between the rate mode and the channel coding modes of the at least two types of substreams. Decoding methods include:

When the rate mode of the voice service indicates that the rate of the voice service is within the second rate interval, the decoding method of the Turbo code is selected as a combination of a part of the substreams or all of the substreams in the at least two types of substreams. Channel decoding method.

17. The method according to claim 16, characterized in that, the multi-rate voice service It is a broadband adaptive multi-rate voice service, and the at least two types of substreams include class A substreams and class B substreams,

Wherein, when the rate mode of the voice service indicates that the rate of the voice service is within the second rate interval, the decoding method of the Turbo code is selected as part of the substreams or all of the substreams in the at least two types of substreams. The combined channel decoding method includes:

When the rate mode of the voice service indicates that the rate of the voice service is greater than or equal to a third threshold, the decoding method of the Turbo code is selected as the channel decoding method for the combination of the Class A substream and the Class B substream. code mode, wherein the third threshold is 23.85 kb/s.

18. The method according to claim 16, characterized in that, the multi-rate voice service is a narrowband adaptive multi-rate voice service, and the at least two types of substreams include class A substreams, class B substreams and class C substreams. substream,

When the rate mode of the voice service indicates that the rate mode of the voice service is greater than or equal to the fourth threshold, select the decoding mode of the convolutional code as the channel decoding mode of the Class A substream, and select the The decoding method of Turbo code is the channel decoding method of the combination of the Class B substream and the Class C substream;

When the rate mode of the voice service indicates that the rate mode of the voice service is less than the fourth threshold, the decoding mode of the convolutional code is selected as the class A substream, the class B substream and the class C respectively. The channel decoding method of the substream, wherein the fourth threshold is 12.2kb/s.

19. The method according to any one of claims 11 to 18, further comprising:

Receive a transport format combination indicator sent by the transmitting end, wherein the transport format combination indicator indicates the transport formats of at least two types of substreams of the voice service, and the transmission formats include: the rate mode and the at least two types of substreams. The correspondence between the channel coding methods of substreams,

Determining the channel decoding methods of the at least two types of substreams based on the correspondence between the rate mode and the channel coding methods of the at least two types of substreams includes:

According to the corresponding relationship between the rate mode indicated by the transport format combination indicator and the channel decoding modes of the at least two types of substreams, the decoding modes are determined for the at least two types of substreams.

20. The method according to any one of claims 11 to 18, characterized in that: Determining channel decoding methods for the at least two types of substreams includes:

Blind detection is used to determine the channel decoding modes of the at least two types of substreams.

21. The method according to any one of claims 11 to 20, further comprising:

The corresponding relationship is received from a radio network controller.

22. A channel coding method for multi-rate voice services, characterized in that it includes: configuring the correspondence between at least two types of substreams of the voice services in each rate mode and the channel coding method;

Send the corresponding relationship to the sending end, so that the sending end determines a channel coding method for the at least two types of substreams based on the corresponding relationship, and uses the determined channel coding method to perform channel coding on the at least two types of substreams. ;

The corresponding relationship is sent to the receiving end, so that the receiving end determines a channel decoding method for the at least two types of substreams based on the corresponding relationship, and uses the determined channel decoding method to perform processing on the at least two types of substreams. Channel decoding.

23. The method according to claim 22, characterized in that,

For broadband adaptive multi-rate voice services, the corresponding relationships include: In the 23.85 kb/s rate mode, the combination of Class A substream and Class B substream corresponds to the Turbo code encoding method, in 15.85kb/s~12.65kb /s rate mode, type A substream corresponds to the convolutional code encoding method, type B substream corresponds to the turbo code encoding method, in the 8.85kb/s~6.6kb/s rate mode, type A substream corresponds to the convolutional Code encoding method, type B substream corresponds to the convolutional code encoding method;

or,

For broadband adaptive multi-rate voice services, the corresponding relationships include: In the 23.85 kb/s ~12.65 kb/s rate mode, Type A substream corresponds to the convolutional code encoding method, and Type B substream corresponds to Turbo code encoding. Mode, in the 8.85kb/s~6.6 kb/s rate mode, type A substream corresponds to the convolutional code encoding method, and type B substream corresponds to the convolutional code encoding method;

or,

For narrowband adaptive multi-rate voice services, the corresponding relationships include: in a rate mode less than 12.2kb/s, the Class A substream, the Class B substream and the Class C substream correspond to convolution Code encoding method, in the rate mode of 12.2kb/s, the type A substream corresponds to the convolutional code encoding method, and the combination of the type B substream and the type C substream corresponds to the turbo code encoding method.

24. A channel coding device for multi-rate voice services, characterized in that it includes: a determining module, configured to determine the rate mode of the voice service, wherein the voice service includes at least Two types of substreams, and determine a channel coding method for the at least two types of substreams according to the rate mode of the voice service and the correspondence between the at least two types of substreams and the channel coding method, where each rate There is a correspondence between at least two types of substreams of the mode and the channel coding method;

A coding module, configured to perform channel coding on the at least two types of substreams using the determined channel coding method.

25. The channel coding device according to claim 24, wherein the determining module selects the convolutional code encoding method when the rate mode of the voice service indicates that the rate of the voice service is within the first rate interval. As the channel coding method for the at least two types of substreams; when the rate mode of the voice service indicates that the rate of the voice service is within the second rate interval, select the convolutional code coding method as the at least two types of substreams. As the channel coding method for a part of the substreams, the Turbo code coding method is selected as the channel coding method for another part of the substreams among the at least two types of substreams.

26. The channel coding device according to claim 25, characterized in that, the multi-rate voice service is a wideband adaptive multi-rate voice service, and the at least two types of sub-streams include class A sub-streams and class B sub-streams, Wherein, when the rate mode of the voice service indicates that the rate of the voice service is less than the first threshold, the determining module selects a convolutional code encoding method as the channel coding of the Class A substream and the Class B substream respectively. method, the determining module selects the convolutional code encoding method as the channel of the Class A substream when the rate mode of the voice service indicates that the rate of the voice service is greater than or equal to the first threshold and less than or equal to the second threshold. Coding mode, and select the Turbo code encoding mode as the channel coding mode of the Class B substream.

27. The channel coding device according to claim 25, characterized in that: the first threshold is 12.65kb/s, the second threshold is 23.85kb/s, or the first threshold is 12.65kb/s. s, the second threshold is 15.85kb/s.

28. The channel coding device according to claim 26, wherein the determining module also indicates the voice service in the rate mode of the voice service when the second threshold is 15.85kb/s. When the rate is greater than or equal to a third threshold, the Turbo code encoding method is selected as the channel encoding method for the combination of the Class A substream and the Class B substream, where the third threshold is 23.85 kb/s.

29. The channel coding device according to claim 24, characterized in that, when the rate mode of the voice service indicates that the rate of the voice service is within the second rate interval, the determining module selects the Turbo code encoding method as the Some or all of the at least two types of substreams Channel coding method for combining substreams.

30. The channel coding device according to claim 29, characterized in that, the multi-rate voice service is a wideband adaptive multi-rate voice service, and the at least two types of substreams include class A substreams and class B substreams, Wherein the determining module selects the Turbo code encoding method as a combination of the Class A substream and the Class B substream when the rate mode of the voice service indicates that the rate of the voice service is greater than or equal to a third threshold. channel coding method, wherein the third threshold is 23.85 kb/s.

31. The channel coding device according to claim 29, wherein the multi-rate voice service is a narrowband adaptive multi-rate voice service, and the at least two types of substreams include a Type A substream, a Type B substream, and a Type B substream. Class C substream, wherein the determining module selects the convolutional code encoding method as the channel of the Class A substream when the rate mode of the voice service indicates that the rate mode of the voice service is greater than or equal to the fourth threshold. Coding mode, and selecting the Turbo code encoding mode as the channel coding mode of the combination of the Class B substream and the Class C substream, when the rate mode of the voice service indicates that the rate mode of the voice service is less than a fourth threshold When , the convolutional code coding method is selected as the channel coding method of the Class A substream, the Class B substream and the Class C substream respectively, and the fourth threshold is 12.2kb/s.

32. The channel coding device according to any one of claims 24 to 31, further comprising:

Generating module, used to generate transmission format combination indicators;

A sending module, configured to send the transport format combination indicator to the receiving end, where the transport format combination indicator is used to indicate the transport format combination of at least two types of substreams of the voice service, the transport format combination includes the corresponding relationship.

33. The channel coding device according to any one of claims 24 to 32, further comprising:

A receiving module, configured to receive the corresponding relationship from the radio network controller.

34. A channel decoding device for multi-rate voice services, characterized in that it includes: a receiving module for receiving voice services, where the voice services include at least two types of substreams; and a determining module for determining based on the rate mode and the required The correspondence between at least two types of substreams and channel coding methods is determined, and the channel decoding methods of the at least two types of substreams are determined, wherein there is a correspondence between at least two types of substreams and channel coding methods of each rate mode. relation;

A decoding module, configured to perform channel decoding on the at least two types of substreams using the determined channel decoding method.

35. The channel decoding device according to claim 34, wherein the determining module selects the convolutional code when the rate mode of the voice service indicates that the rate of the voice service is within the first rate interval. The decoding mode is used as the channel decoding mode of the at least two types of substreams; when the rate mode of the voice service indicates that the rate of the voice service is within the second rate interval, the decoding mode of the convolutional code is selected as the decoding mode. The channel decoding method of a part of the substreams in the at least two types of substreams is selected as the channel decoding method of another part of the substreams in the at least two types of substreams.

36. The channel decoding device according to claim 35, characterized in that, the multi-rate voice service is a wideband adaptive multi-rate voice service, and the at least two types of substreams include class A substreams and class B substreams. ,

Wherein, when the rate mode of the voice service indicates that the rate of the voice service is less than the first threshold, the determining module selects the decoding method of the convolutional code as the decoding method of the Class A substream and the Class B substream respectively. Channel decoding mode, the determining module selects the decoding mode of the convolutional code as the A when the rate mode of the voice service indicates that the rate of the voice service is greater than or equal to the first threshold and less than or equal to the second threshold. The channel decoding method of the Class B substream is selected as the channel decoding method of the Class B substream, and the decoding method of the Turbo code is selected as the channel decoding method of the Class B substream.

37. The channel decoding device according to claim 36, characterized in that: the first threshold is 12.65kb/s, the second threshold is 23.85kb/s, or the first threshold is 12.65kb /s, the second threshold is 15.85kb/s.

38. The channel decoding device according to claim 37, wherein when the second threshold is 15.85kb/s, the determining module indicates the voice service in the rate mode of the voice service. When the rate is greater than or equal to the third threshold, the decoding method of the Turbo code is selected as the channel decoding method of the combination of the Class A substream and the Class B substream, wherein the third threshold is 23.85 kb/ s.

39. The channel decoding device according to claim 34, characterized in that, when the rate mode of the voice service indicates that the rate of the voice service is within the second rate interval, the determination module selects the decoding of the Turbo code. The coding mode is a channel decoding mode that is a combination of a part of the substreams or all of the substreams in the at least two types of substreams.

40. The channel decoding device according to claim 39, characterized in that, the multi-rate voice service is a wideband adaptive multi-rate voice service, and the at least two types of substreams include class A substreams and class B substreams. , wherein the determining module indicates the voice service in the rate mode of the voice service When the rate is greater than or equal to the third threshold, the decoding method of the Turbo code is selected as the channel decoding method of the combination of the Class A substream and the Class B substream, wherein the third threshold is 23.85 kb/ s.

41. The channel decoding device according to claim 39, characterized in that the multi-rate voice service is a narrowband adaptive multi-rate voice service, and the at least two types of substreams include type A substreams and type B substreams. and a Class C substream, wherein the determining module selects the decoding method of the convolutional code as the Class A substream when the rate mode of the voice service indicates that the rate mode of the voice service is greater than or equal to a fourth threshold. Channel decoding mode, and select the decoding mode of the Turbo code as the channel decoding mode of the combination of the Class B substream and the Class C substream, and indicate the rate of the voice service in the rate mode of the voice service When the mode is less than the fourth threshold, the channel decoding method of the convolutional code is selected as the channel decoding method of the Class A substream, the Class B substream and the Class C substream, and the fourth threshold is 12.2kb/s.

42. The channel decoding device according to any one of claims 34 to 41, wherein the receiving module is further configured to receive a transport format combination indicator sent by the transmitting end, wherein the transport format combination indicator The symbol indicates the transmission format of at least two types of substreams of the voice service, and the transmission format includes: the corresponding relationship between the rate mode and the at least two types of substreams and channel coding methods, wherein the determination module is based on The corresponding relationship between the rate mode indicated by the transport format combination indicator and the channel coding methods of the at least two types of substreams determines the channel coding methods for the at least two types of substreams.

43. The channel decoding device according to any one of claims 34 to 41, characterized in that the determining module uses blind detection to determine the channel decoding modes of the at least two types of substreams.

44. The channel coding device according to any one of claims 34 to 43, wherein the receiving module is further configured to receive the corresponding relationship from a radio network controller.

45. A wireless network controller, characterized by including:

A configuration module, used to configure the correspondence between at least two types of substreams and channel coding methods of voice services in each rate mode;

A sending module, configured to send the corresponding relationship to the sending end, so that the sending end determines the channel coding method for the at least two types of substreams based on the corresponding relationship, and uses the determined channel coding method to encode the at least two types of substreams. The substreams are channel coded, and the corresponding relationship is sent to the receiving end, so that the receiving end determines a channel decoding method for the at least two types of substreams based on the corresponding relationship, and uses the determined channel decoding method to decode all substreams. Channel decoding is performed on at least two types of substreams.

46. The wireless network controller according to claim 45, characterized in that, For broadband adaptive multi-rate voice services, the corresponding relationships include: In the 23.85 kb/s rate mode, the combination of Class A substream and Class B substream corresponds to the Turbo code encoding method, in 15.85kb/s~12.65kb /s rate mode, type A substream corresponds to the convolutional code encoding method, type B substream corresponds to the turbo code encoding method, in the 8.85kb/s~6.6kb/s rate mode, type A substream corresponds to the convolutional Code encoding method, type B substream corresponds to the convolutional code encoding method;

or,

For broadband adaptive multi-rate voice services, the corresponding relationships include: In the 23.85 kb/s ~12.65 kb/s rate mode, the type A substream corresponds to the convolutional code encoding method, and the type B substream corresponds to the turbo code encoding method. Mode, in the 8.85kb/s~6.6 kb/s rate mode, type A substream corresponds to the convolutional code encoding method, and type B substream corresponds to the convolutional code encoding method;

or,

47. A channel coding device for multi-rate voice services, characterized by including a processor and a memory,

The processor calls the information stored in the memory to determine the rate mode of the voice service, wherein the voice service includes at least two types of sub-streams, and according to the rate mode of the voice service and the at least two types of sub-streams The corresponding relationship between the channel coding method and the channel coding method is to determine the channel coding method for the at least two types of substreams, where there is a corresponding relationship between the at least two types of substreams of each rate mode and the channel coding method; use the determined channel The coding method performs channel coding on the at least two types of substreams.

48. The channel coding device according to claim 47, when the rate mode of the voice service indicates that the rate of the voice service is within the first rate interval, the processor selects a convolutional code encoding method as the at least Channel coding methods for two types of substreams; When the rate mode of the voice service indicates that the rate of the voice service is within the second rate interval, select the convolutional code coding method as a part of the at least two types of substreams. As for the channel coding method of the stream, the Turbo code coding method is selected as the channel coding method of another part of the substreams in the at least two types of substreams.

49. A channel decoding device for multi-rate voice services, including: a receiver, a processor and a memory, The receiver is configured to receive a voice service, and the voice service includes at least two types of substreams; and the processor is configured to determine the corresponding relationship between the rate mode and the at least two types of substreams and channel coding methods. Channel decoding methods for at least two types of substreams, wherein there is a correspondence between at least two types of substreams in each rate mode and channel coding methods, and the determined channel decoding method is used to encode the at least two types of substreams. The stream is channel decoded.

50. A wireless network controller, including: a processor, a transmitter and a memory, the processor calling the information in the memory to configure at least two types of substreams and channel coding for voice services in each rate mode Correspondence between methods;

The transmitter is configured to send the corresponding relationship to the sending end, so that the sending end determines a channel coding method for the at least two types of substreams based on the corresponding relationship, and uses the determined channel coding method to encode the at least two types of substreams. The substreams are channel coded, and the corresponding relationship is sent to the receiving end, so that the receiving end determines a channel decoding method for the at least two types of substreams based on the corresponding relationship, and uses the determined channel decoding method to decode all substreams. Channel decoding is performed on at least two types of substreams.