CN101790011A - Method and device for bearing VoIP voice - Google Patents
Method and device for bearing VoIP voice Download PDFInfo
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- CN101790011A CN101790011A CN200910001151A CN200910001151A CN101790011A CN 101790011 A CN101790011 A CN 101790011A CN 200910001151 A CN200910001151 A CN 200910001151A CN 200910001151 A CN200910001151 A CN 200910001151A CN 101790011 A CN101790011 A CN 101790011A
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Abstract
The embodiment of the invention discloses a method and a device for bearing VoIP voice and introduces an E-UTRAN system of MIMO technology, relating the technical field of communication. The invention aims to solve the problem that the existing VoIP voice bearing technology can not well bear VoIP voice after the MIMO technology is introduced into the E-UTRAN system. The method comprises the following steps: combining VoIP speech packets into at least two grouped data units; mapping the grouped data units onto MIMO streams of different channel qualities to be bore according to degree of importance of information. In the embodiment of the invention, the grouped data units are respectively mapped onto the MIMO streams of different channel qualities to be transmitted according to degree of importance of information contained in the grouped data units, so that unequal error protection can be carried out on the VoIP voice and the VoIP voice can be better bore.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of bearing method and device of VoIP voice.
Background technology
The voip technology of internet protocol-based, usually adopt the AMR coded system, and according to subjectivity or perceptual importance, the data that produce in the AMR encoder are divided into A, B, C three classes, wherein the category-A bit has comprised most important speech bits in the speech payload, and promptly the mistake of category-A bit can cause the decoding failure or destroy speech frame; C class bit has comprised speech bits least important in the speech payload, and promptly the mistake of C class bit can not cause too big influence to decoding or speech frame; The category-B bit has then comprised those speech bits between category-A bit and C class bit.In existing E-UTRAN system, by selecting the different modulating coded system to carry out unequal error protection to different classes of data.
MIMO (multiple-input, multiple-output) technology is meant at transmitting terminal and receiving terminal uses a plurality of antennas respectively, and carries out the transmission and the reception of data in conjunction with certain signal processing technology.Use a plurality of antennas simultaneously at transmitting terminal and receiving terminal, produce a plurality of parallel communications " channel ", make communication system under the certain situation of transmitting power and the error rate, to provide higher message transmission rate.The MIMO The Application of Technology is the important breakthrough of wireless communication field intelligent antenna technology.
But the inventor finds, in the E-UTRAN system, after using MIMO technique, existing to the VoIP voice do not wait the error protection technology, can not realize better carrying to the VoIP voice.
Summary of the invention
Embodiments of the invention provide a kind of bearing method and device of VoIP voice, can realize the better carrying to the VoIP voice in the communication system after introducing the MIMO technology.
For achieving the above object, embodiments of the invention adopt following technical scheme:
A kind of bearing method of VoIP voice comprises:
The VoIP voice packet is combined at least two Packet Data Units;
Described Packet Data Unit is mapped to carrying on the MIMO stream of different channels quality according to the information significance level.
A kind of bogey of VoIP voice comprises:
Grouping forms module, is used for the VoIP voice packet is combined at least two Packet Data Units;
The channel Mapping module is used for described Packet Data Unit is mapped to carrying on the MIMO stream of different channels quality according to the information significance level.
The bearing method and the device of the VoIP voice that the embodiment of the invention provides; it is a plurality of Packet Data Units that the VoIP voice packet is carried out splitting and reorganizing; afterwards described Packet Data Unit is mapped to carrying on the MIMO stream of different channels quality according to the information significance level; thereby the VoIP voice are carried out unequal error protection, realized better carrying the VoIP voice.
Description of drawings
The flow chart of the bearing method of the VoIP voice that Fig. 1 provides for the embodiment of the invention;
The flow chart that the VoIP voice packet is combined at least two Packet Data Units that Fig. 2 provides for the embodiment of the invention;
The flow chart of carrying on the MIMO stream that described Packet Data Unit is mapped to the different channels quality according to the information significance level that Fig. 3 provides for the embodiment of the invention;
The VoIP voice signal processing procedure figure that Fig. 4 provides for the embodiment of the invention one;
The VoIP voice signal processing procedure figure that Fig. 5 provides for the embodiment of the invention two;
The VoIP voice signal processing procedure figure that Fig. 6 provides for the embodiment of the invention three;
The VoIP voice signal processing procedure figure that Fig. 7 provides for the embodiment of the invention four;
The bogey structure chart of the VoIP voice that Fig. 8 provides for the embodiment of the invention;
Fig. 9 forms modular structure figure for the grouping that the embodiment of the invention provides;
The channel Mapping modular structure figure that Figure 10 provides for the embodiment of the invention.
Embodiment
In order to solve in the E-UTRAN system that has used the MIMO technology, prior art can't realize the problem to the better carrying of VoIP voice.The invention provides a kind of E-UTRAN system of bearing method, device and introducing MIMO technology of VoIP voice.Describe the present invention below in conjunction with accompanying drawing.
As shown in Figure 1, the bearing method of the VoIP voice that the embodiment of the invention provides comprises:
101, the VoIP voice packet is combined at least two Packet Data Units;
102, described Packet Data Unit is mapped to carrying on the MIMO stream of different channels quality according to the information significance level.
The bearing method of the VoIP voice that the embodiment of the invention provides; by the VoIP voice packet being carried out splitting and reorganizing is a plurality of Packet Data Units; and described Packet Data Unit is mapped to carrying on the MIMO stream of different channels quality according to the information significance level; thereby the VoIP voice are carried out unequal error protection, realized better carrying the VoIP voice.
As shown in Figure 2, the described step that the VoIP voice packet is combined at least two Packet Data Units comprises:
201, the VoIP voice packet is split into header and speech payload;
Wherein said header comprises: unpressed header or compress after header; Be the PDCP layer after receiving the VoIP voice packet, its header is compressed, compress mode can adopt ROHC (robust header compression) mode, also can adopt other compress modes, even the compression; Again the VoIP voice packet is split afterwards;
Wherein said speech payload comprises: category-A information bit, category-B information bit and C category information bit;
Its information significance level is arranged as from high to low: header, category-A information bit, category-B information bit, C category information bit.
202, described header and speech payload are combined at least two Packet Data Units.
Described header and speech payload can be combined to form two Packet Data Units, three Packet Data Units or four Packet Data Units even more a plurality of Packet Data Unit.Be that example describes in detail with two, three and four Packet Data Units below.
The Packet Data Unit compound mode comprises:
Form the compound mode of two Packet Data Units: header and category-A information bit are divided into one group, and category-B information bit and C category information bit are divided into one group;
Form the compound mode of three Packet Data Units: header is one group, and the category-A information bit is one group, and category-B information bit and C category information bit are divided into one group;
Perhaps header and category-A information bit are divided into one group, and the category-B information bit is one group, and C category information bit is one group;
Form the compound mode of four Packet Data Units: header, the category-A information bit, category-B information bit and C category information bit respectively are one group;
The information importance of Packet Data Unit is determined by the importance of its entrained data message, the information importance of the Packet Data Unit that forms as header and category-A information bit will be higher than the Packet Data Unit that category-B information bit and C category information bit form, by that analogy.
As shown in Figure 3, described Packet Data Unit being mapped to the step of carrying on the MIMO stream of different channels quality according to the information significance level comprises:
301, receive the MIMO stream channel quality information that subscriber equipment feeds back to;
302, from high to low, MIMO stream channel is sorted according to quality;
303, the different Packet Data Unit of contained information importance being mapped to MIMO stream channel transmits.
After receiving the MIMO stream channel quality information that subscriber equipment feeds back to, according to each channel quality status, for MIMO stream channel puts in order, the Packet Data Unit that will carry then than important information is mapped to channel quality MIMO stream preferably, the Packet Data Unit that the information of carrying is not too important is mapped to the relatively poor MIMO stream of channel quality, the rest may be inferred, and transmit respectively.
After described Packet Data Unit is delivered to the PHY layer, by sending with the corresponding antenna port of MIMO stream channel, in order to obtain better supporting effect, can also select different modulation coding modes to carry out modulating-coding respectively to each Packet Data Unit by the PHY layer, send again afterwards.
The bearing method of the VoIP voice that provide in the invention process, described speech payload can comprise: at least two category information bits;
Correspondingly, described header and speech payload are combined at least two Packet Data Units, can comprise:
Header in the VoIP voice packet and speech payload according to information significance level from high to low, are divided into two parts;
Described two parts directly are encapsulated as two Packet Data Units.
To be described in detail by a pair of embodiment of the invention of embodiment below:
Embodiment one
The embodiment of the invention one is carried out header suppression with the IP bag of receiving earlier by the packet data convergence layer as shown in Figure 4, then compressing head and category-A information bit is combined as first, and category-B information bit and C category information bit combination are second portion;
First and second portion are encapsulated as two packet data convergence layer groupings;
With described packet data convergence layer delivery of packets to wireless chain control layer;
Wireless chain control layer adds Radio Link control header with the grouping of described packet data convergence layer and forms two wireless chain control layers groupings, and with described wireless chain control layer packet delivery to media access control layer;
Media access control layer adds medium access control header respectively with described wireless chain control layer grouping, forms two media access control layer groupings; With described media access control layer packet map is two Packet Data Units;
The MIMO stream that the Packet Data Unit that carries first's data is mapped to the high channel quality carries, and the MIMO stream that the Packet Data Unit that carries the second portion data is mapped to low channel quality carries;
Physical layer is not carried out modulating-coding to described MIMO flow point, sends by a plurality of antenna ports afterwards.
Except that the foregoing description, the bearing method of the VoIP voice that the embodiment of the invention provides, described speech payload can also comprise: at least three category information bits;
Header and speech payload are combined at least two Packet Data Units, then can comprise:
Packet header in the VoIP voice packet and speech payload according to information significance level from high to low, are divided into N part at least, and described N is the integer more than or equal to three;
Described N part is encapsulated as Y Packet Data Unit, and described Y is more than or equal to 2, and is less than or equal to the integer of N.
To specifically describe by embodiment two, embodiment three and four pairs of embodiment of the invention of embodiment below:
Embodiment two
The embodiment of the invention two as shown in Figure 5, earlier the VoIP bag of receiving is carried out header suppression by the packet data convergence layer, then with compressing head as first, category-A information bit as second portion, the category-B information bit as third part, C category information bit as the 4th part;
First, second portion, third part and the 4th part are encapsulated as four packet data convergence layer groupings; With described packet data convergence layer delivery of packets to wireless chain control layer;
Wireless chain control layer adds Radio Link control header with the grouping of described packet data convergence layer and forms four wireless chain control layers groupings, and with described wireless chain control layer packet delivery to media access control layer;
Media access control layer adds medium access control header respectively with described wireless chain control layer grouping, forms four media access control layer groupings; With described media access control layer packet map is four Packet Data Units;
The Packet Data Unit that carries first's data is mapped to the highest MIMO stream of channel quality to be transmitted, the Packet Data Unit that carries the second portion data is mapped to channel quality time high MIMO stream to be transmitted, the Packet Data Unit that carries the third part data is mapped to the lower MIMO stream of channel quality transmits, the Packet Data Unit that carries the 4th partial data is mapped to the minimum MIMO stream of channel quality transmits;
Physical layer is not carried out modulating-coding to described MIMO flow point, sends by a plurality of antenna ports afterwards.
Embodiment three
The embodiment of the invention three as shown in Figure 6, earlier the VoIP bag of receiving is carried out header suppression by the packet data convergence layer, then with compressing head as first, category-A information bit as second portion, the category-B information bit as third part, C category information bit as the 4th part;
First, second portion, third part and the 4th part are encapsulated as four packet data convergence layer groupings; With described packet data convergence layer delivery of packets to wireless chain control layer;
Different with embodiment two is, wireless chain control layer is reassembled into three parts with described four packet data convergence layer Packet Data Units, wherein first is two packet data convergence layer Packet Data Units that carry compression head and category-A information bit, second portion is the packet data convergence layer Packet Data Unit that carries the category-B information bit, and third part is the packet data convergence layer Packet Data Unit that carries C category information bit;
Each part is encapsulated as a wireless chain control layer grouping, thereby form three wireless chain control layer groupings, wherein first wireless chain control layer grouping has comprised two packet data convergence layer groupings that carry compression head and category-A information bit, second wireless chain control layer grouping comprised a packet data convergence layer grouping that carries the category-B information bit, and the 3rd wireless chain control layer grouping comprised a packet data convergence layer grouping that carries C category information bit;
Then with described three wireless chain control layer packet delivery to media access control layer;
Media access control layer is assembled into three media access control layer groupings with described wireless chain control layer; With described media access control layer packet map is three Packet Data Units;
The Packet Data Unit that carries first wireless chain control layer grouped data is mapped to the highest MIMO stream of channel quality to be carried, the Packet Data Unit that carries second wireless chain control layer grouped data is mapped to channel quality time high MIMO stream carries, the Packet Data Unit that carries the 3rd wireless chain control layer grouped data is mapped to the minimum MIMO stream of channel quality carries;
Physical layer is not carried out modulating-coding to described MIMO flow point, sends by a plurality of antenna ports afterwards.
Embodiment four
The embodiment of the invention four as shown in Figure 7, earlier the VoIP bag of receiving is carried out header suppression by the packet data convergence layer, then compressing head as first, category-A information bit as second portion, the category-B information bit as third part, C category information bit as the 4th part;
First, second portion, third part and the 4th part are encapsulated as four packet data convergence layer groupings; With described packet data convergence layer delivery of packets to wireless chain control layer;
Different with embodiment three is, wireless chain control layer adds Radio Link control header with described packet data convergence layer grouping and still forms four wireless chain control layers groupings, and with described wireless chain control layer packet delivery to media access control layer;
Media access control layer then is grouped into three parts with described wireless chain control layer, wherein first is for having comprised two wireless chain control layer groupings of compressing head and category-A information bit, second portion is a wireless chain control layer grouping that comprises the category-B information bit, and third part is a wireless chain control layer grouping that comprises C category information bit;
Each part is encapsulated as a media access control layer grouping, thereby form three media access control layer groupings, wherein first media access control layer grouping has comprised the content of two wireless chain control layer groupings of compressing head and category-A information bit, second media access control layer grouping comprised the content of a wireless chain control layer grouping of category-B information bit, and the 3rd media access control layer grouping comprised the content of a wireless chain control layer grouping of C category information bit;
With described three media access control layer packet map is three Packet Data Units; The Packet Data Unit that carries first media access control layer grouped data is mapped to the highest MIMO stream of channel quality to be carried, the Packet Data Unit that carries second media access control layer grouped data is mapped to channel quality time high MIMO stream carries, the Packet Data Unit that carries the 3rd media access control layer grouped data is mapped to the minimum MIMO stream of channel quality carries;
Physical layer is not carried out modulating-coding to described MIMO flow point, sends by a plurality of antenna ports afterwards.
In embodiment provided by the present invention, header and speech payload are made up, can implement at the layer of choosing arbitrarily, comprise but be not limited to the situation of several embodiment provided by the present invention, can choose suitable compound mode as required handles with layer, be described with N the part be encapsulated as Y Packet Data Unit, comprising:
Described N part handled by packet data convergence layer, wireless chain control layer and media access control layer successively, obtained Y media access control layer and divide into groups, and be Y Packet Data Unit described Y media access control layer packet map, and,
At the packet data convergence layer described N part is encapsulated as Y packet data convergence layer grouping;
Perhaps, be Y wireless chain control layer grouping at wireless chain control layer with described N packet data convergence layer packet encapsulation;
Perhaps, be Y media access control layer grouping at media access control layer with described N wireless chain control layer packet encapsulation.
In each embodiment provided by the present invention, the PHY layer, the modulation coding mode that each MIMO stream is adopted can be identical, also can be according to the different modulation coding mode of significance level different choice of information in the MIMO stream; In addition, embodiment provided by the present invention also is applicable to the situation more than four MIMO streams.
As shown in Figure 8, the bogey of the VoIP voice that the embodiment of the invention provides comprises:
The bogey of the VoIP voice that the embodiment of the invention provides also comprises:
Modulating-coding module 803 is used for the channel Mapping module is mapped to the Packet Data Unit that each MIMO flows, and promptly each MIMO flow point does not carry out modulating-coding.
As shown in Figure 9, described grouping forms module, comprising:
As shown in figure 10, described channel Mapping module comprises:
Correspondingly, modulating-coding module 803, each the MIMO stream that then is used for map unit 1003 is mapped to MIMO stream channel carries out modulating-coding.
The Packet Data Unit that the information significance level is high is mapped to carrying on the high MIMO stream of channel quality, and the Packet Data Unit that the information significance level is low is mapped to carrying on the low MIMO stream of channel quality, and the rest may be inferred.
The introducing that the embodiment of the invention provided the E-UTRAN system of MIMO technology, comprising:
Grouping forms module, is used for the VoIP voice packet is combined at least two Packet Data Units;
The channel Mapping module is used for described Packet Data Unit is mapped to carrying on the MIMO stream of different channels quality according to the information significance level.
The introducing that the embodiment of the invention provided the E-UTRAN system of MIMO technology, also comprise:
The modulating-coding module is used for each MIMO flow point is not carried out modulating-coding.
One of ordinary skill in the art will appreciate that: all or part of step in realization the foregoing description method can instruct relevant hardware to finish by program, described program can be stored in the computer-readable recording medium, as ROM/RAM, magnetic disc or CD etc.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the described protection range of claim.
Claims (14)
1. the bearing method of VoIP voice is characterized in that, comprising:
The VoIP voice packet is combined at least two Packet Data Units;
Described Packet Data Unit is mapped to carrying on the MIMO stream of different channels quality according to the information significance level.
2. the bearing method of VoIP voice according to claim 1 is characterized in that, the described step that the VoIP voice packet is combined at least two Packet Data Units comprises:
The VoIP voice packet is split into header and speech payload;
Described header and speech payload are combined at least two Packet Data Units.
3. the bearing method of VoIP voice according to claim 2 is characterized in that, described speech payload comprises: at least two category information bits;
Described header and speech payload are combined at least two Packet Data Units, comprise:
Header in the VoIP voice packet and speech payload according to information significance level from high to low, are divided into two parts;
Described two parts directly are encapsulated as two Packet Data Units.
4. the bearing method of VoIP voice according to claim 2 is characterized in that, described speech payload comprises: at least three category information bits;
Described header and speech payload are combined at least two Packet Data Units, comprise:
Packet header in the VoIP voice packet and speech payload according to information significance level from high to low, are divided into N part at least, and described N is the integer more than or equal to three;
Described N part is encapsulated as Y Packet Data Unit, and described Y is more than or equal to 2, and is less than or equal to the integer of N.
5. the bearing method of VoIP voice according to claim 4 is characterized in that,
Described with N the part be encapsulated as Y Packet Data Unit, comprising:
Described N part handled by packet data convergence layer, wireless chain control layer and media access control layer successively, obtained Y media access control layer and divide into groups, and be Y Packet Data Unit described Y media access control layer packet map, and,
At the packet data convergence layer described N part is encapsulated as Y packet data convergence layer grouping;
Perhaps, be Y wireless chain control layer grouping at wireless chain control layer with described N packet data convergence layer packet encapsulation;
Perhaps, be Y media access control layer grouping at media access control layer with described N wireless chain control layer packet encapsulation.
6. the bearing method of VoIP voice according to claim 2 is characterized in that, comprising:
Described header comprises: unpressed header or compress after header;
Described speech payload comprises: category-A information bit, category-B information bit and C category information bit;
Its information significance level is arranged as from high to low: header, category-A information bit, category-B information bit, C category information bit;
Described described header and speech payload are combined at least two Packet Data Units, compound mode wherein comprise following any one:
Form the compound mode of two Packet Data Units: header and category-A information bit are divided into one group, and category-B information bit and C category information bit are divided into one group;
Form the compound mode of three Packet Data Units: header is one group, and the category-A information bit is one group, and category-B information bit and C category information bit are divided into one group;
Perhaps header and category-A information bit are divided into one group, and the category-B information bit is one group, and C category information bit is one group;
Form the compound mode of four Packet Data Units: header, the category-A information bit, category-B information bit and C category information bit respectively are one group.
7. the bearing method of VoIP voice according to claim 1 is characterized in that, the described step of carrying on the MIMO stream of different channels quality that described Packet Data Unit is mapped to according to the information significance level comprises:
Receive the MIMO stream channel quality information that subscriber equipment feeds back to;
According to quality from high to low, MIMO stream channel is sorted;
The different Packet Data Unit of contained information importance is mapped to MIMO stream channel to be transmitted.
8. the bearing method of VoIP voice according to claim 7 describedly is mapped to MIMO stream channel with the different Packet Data Unit of contained information importance and transmits, and it is characterized in that, comprising:
The Packet Data Unit that the information significance level is high is mapped to carrying on the high MIMO stream of channel quality, and the Packet Data Unit that the information significance level is low is mapped to carrying on the low MIMO stream of channel quality.
9. the bearing method of VoIP voice according to claim 1 is characterized in that, also comprises:
Each Packet Data Unit is carried out modulating-coding respectively, afterwards by sending with the corresponding antenna port of MIMO stream channel.
10. the bogey of VoIP voice is characterized in that, comprising:
Grouping forms module, is used for the VoIP voice packet is combined at least two Packet Data Units;
The channel Mapping module is used for described Packet Data Unit is mapped to according to the information significance level on the MIMO stream channel of different channels quality and carries.
11. the bogey of VoIP voice according to claim 10 is characterized in that, described grouping forms module and comprises:
Split cells is used for the VoIP voice packet is split into header and speech payload;
Assembled unit is used for described header and speech payload are combined at least two Packet Data Units.
12. the bogey of VoIP voice according to claim 10 is characterized in that, described channel Mapping module comprises:
The feedback receiving element is used to receive the MIMO stream channel quality information that subscriber equipment feeds back to;
Sequencing unit is used for according to channel quality from high to low MIMO being flow to line ordering;
Map unit, the clooating sequence of the MIMO that is used for obtaining according to sequencing unit stream channel forms described grouping that module combinations goes out and the different Packet Data Unit of contained information importance is mapped to MIMO stream channel and carries.
13. the bogey of VoIP voice according to claim 10 is characterized in that, also comprises:
The modulating-coding module, each the MIMO flow point that is used for described channel Mapping module is mapped to MIMO stream channel does not carry out modulating-coding.
14. the bogey according to any described VoIP voice of claim 10 to 13 is characterized in that, the bogey of described VoIP voice is the E-UTRAN system that has introduced the MIMO technology.
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| CN200910001151A CN101790011A (en) | 2009-01-23 | 2009-01-23 | Method and device for bearing VoIP voice |
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| CN200910001151A CN101790011A (en) | 2009-01-23 | 2009-01-23 | Method and device for bearing VoIP voice |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104486503A (en) * | 2014-12-16 | 2015-04-01 | 深圳市中兴移动通信有限公司 | Mobile terminal and voice encryption method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104486503A (en) * | 2014-12-16 | 2015-04-01 | 深圳市中兴移动通信有限公司 | Mobile terminal and voice encryption method thereof |
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Application publication date: 20100728 |