CN100433728C - Speech data frame receiving method and terminal, wireless packet network gate and system - Google Patents
Speech data frame receiving method and terminal, wireless packet network gate and system Download PDFInfo
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- CN100433728C CN100433728C CNB2006101035183A CN200610103518A CN100433728C CN 100433728 C CN100433728 C CN 100433728C CN B2006101035183 A CNB2006101035183 A CN B2006101035183A CN 200610103518 A CN200610103518 A CN 200610103518A CN 100433728 C CN100433728 C CN 100433728C
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Abstract
A method for receiving voice data frame applies token barrel to down send token on fixed time for controlling time interval of receiving voice data frame in order to ensure transmission quality of VOIP voice data frame in mobile packet network. The terminal radio packet network gateway and voice communication system for realizing said method is also disclosed.
Description
Technical field
The present invention relates to communication technique field, be specifically related to method of reseptance and relevant terminal, radio block network gateway and the speech communication system of speech data frame in voice flow (the VOIP:VoiceOver Internet Protocol) technology of carrying Network Based.
Background technology
VOIP is meant after the compression and encapsulation of sound signal through certain format, transmits in the IP network environment with the form of packet, also claims the networking telephone.Along with development of Communication Technique, especially the introducing of internet protocol multimedia subsystem (IMS:Internet Protocol Multimedia Subsystem) technology makes VOIP become the developing direction of future network.
The realization of VOIP comprises following process in the mobile network: terminal (UE:User Equipment) is finished setup requests by the IMS territory, IMS field notice radio packet network connects for the call setup respective carrier, after carrying was set up, the voice between calling and called UE promptly carried out IP-based transmission by radio packet network.
Delay variation is one of key factor that influences voice quality in the process of speech communication, and the above delay variation of 1ms will bring tangible voice quality to descend.In traditional speech network, voice directly are carried on the transmission network, can guarantee that speech data frame that the every 20ms of transmitter side UE sends is received side UE and also accurately receives by the interval of 20ms, as shown in Figure 1.Net loaded down in packet radio, adopt the speech data frame of VOIP technical transmission need pass the radio block network of forming by wireless access network (RAN:RadioAccess Network) and radio block network gateway (GW:GateWay) etc., and be present in IP backbone between transmitter side radio packet network and the receiver side radio packet network, as shown in Figure 2, transmission in these networks generally will cause the delay variation of 0ms～50ms, make the voice quality instability of VOIP network, in the time of part even voice quality can occur and sharply descend and cause the situation that the user can't normal talking.
Summary of the invention
The object of the present invention is to provide and a kind ofly can suppress delay variation, improve method of reseptance and relevant terminal, radio block network gateway and the speech communication system of the speech data frame of VOIP speech communication quality.
To achieve the object of the present invention, the technical scheme of being taked is: a kind of method of reseptance of speech data frame comprises: the start-up control speech data frame receives the token bucket of formation; Token bucket issues token with the time interval of setting; After receiving formation acquisition token, take out a speech data frame and carry out follow-up reception processing operation.
Preferably, when receiving first speech data frame, the reception formation starts token bucket.
Preferably, token bucket 1/2nd tokens after startup issue first token at interval the time, issue token at interval one time every a token later on, and token is chosen as 10～50 milliseconds at interval.
If token receives formation when issuing for empty, then token can be postponed for 1/2nd time intervals of setting and issued; Further, the total degree of described postponement is no more than the interval postponement number of times of setting; Speech data frame number in the described reception formation surpasses when setting queue length, the speech data frame of discardable new reception; Described interval is postponed number of times and is chosen as 3～7 times, and described queue length is the twice that number of times is postponed at described interval.
The present invention also provides with lower device and system:
A kind of terminal, comprise receiver module, voice conversion module and token bucket control module, described receiver module receives the speech data frame that network side sends, and successively a speech data frame is sent to described voice conversion module after receiving the token that described token bucket control module issues; Described token bucket control module issues token with the time interval of setting to described receiver module; Described voice conversion module is resolved and speech conversion the speech data frame of receiving.
A kind of radio block network gateway, comprise network connecting module, wireless access network link block and token bucket control module, described network connecting module receives the speech data frame that transmits through the internet, and successively a speech data frame is sent to described wireless access network link block after receiving the token that described token bucket control module issues; Described token bucket control module issues token with the time interval of setting to described network connecting module; Described wireless access network link block sends to the speech data frame of receiving in the wireless access network.
A kind of speech communication system comprises radio block network gateway, wireless access network, terminal and token bucket control module; Described radio block network gateway receives speech data frame, and speech data frame is sent to described wireless access network; Described wireless access network receives speech data frame from described radio block network gateway, is transmitted to described terminal; Described terminal receives speech data frame from described wireless access network, and the speech data frame of receiving is resolved and speech conversion; Described token bucket control module is controlled the speech data frame that has received, issues token with the time interval of setting, and the described speech data frame that has received enters follow-up reception successively and handles after obtaining token.
Described token bucket control module can be controlled the speech data frame that described radio block network gateway has received, and the speech data frame that described radio block network gateway will obtain token sends to described wireless access network successively.
Described token bucket control module also can be controlled the speech data frame that described wireless access network has received, and the speech data frame that described wireless access network will obtain token is transmitted to described terminal successively.
Described token bucket control module also can be controlled the speech data frame that described terminal has received, and described terminal is resolved and speech conversion successively to the speech data frame that obtains token.
Adopt technique scheme, beneficial technical effects of the present invention is:
1) the present invention adopts token bucket regularly to issue the time of reception method at interval that token is controlled speech data frame, the delay variation that brings in effective inhibition transmission course, guarantee the transmission quality of VOIP speech data frame in mobile Packet Based Network, improved VOIP speech communication quality.
2) the preferred version that adopts the present invention to provide about setting blanking time and concrete control strategy etc. in conjunction with the practical application scene, can obtain the effect that suppresses to shake and the optimum balance between the additional time delay, make the present invention program reach optimum in actual applications.
Description of drawings
Also the present invention is described in further detail in conjunction with the accompanying drawings below by embodiment.
Fig. 1 is that the traditional voice network speech data frame sends reception schematic diagram at interval;
Fig. 2 is that existing VOIP voice-over-net Frame sends reception schematic diagram at interval;
Fig. 3 is the method for reseptance schematic flow sheet of the embodiment of the invention one speech data frame;
Fig. 4 is the signaling process schematic diagram that the inventive method is applied to GW;
Fig. 5 is the method for reseptance schematic flow sheet of the embodiment of the invention two speech data frames;
Fig. 6 is the embodiment of the invention three terminal module structural representations;
Fig. 7 is the embodiment of the invention four radio block network gateway modular structure schematic diagrames;
Fig. 8 is the embodiment of the invention five speech communication system modular structure schematic diagrames;
Fig. 9 is the embodiment of the invention six speech communication system modular structure schematic diagrames;
Figure 10 is the embodiment of the invention seven speech communication system modular structure schematic diagrames.
Embodiment
The invention provides a kind of method of reseptance of speech data frame, its core concept is, adopt token bucket regularly to issue the time of reception interval that token is controlled speech data frame, the present invention program has the situation of shaking than long time delay like this for resembling the net loaded VOIP of packet radio, can effectively suppress shake, improve the speech communication quality.Controlling schemes of the present invention can be carried out in the reception operation of terminal, also can carry out in the reception operation of wireless access network or radio block network gateway.The present invention also provides terminal and radio block network gateway, terminal and the system that is applicable to above-mentioned controlling schemes.Below respectively the inventive method and equipment are elaborated.
The method of reseptance of embodiment one, a kind of speech data frame, flow process comprise as shown in Figure 3:
A1, start-up control speech data frame receive the token bucket of formation; The entry condition of token bucket can be provided with according to actual conditions, can when having speech data to receive, start token bucket, also can receive time interval instability between the speech data frame detecting, situations such as deviation occur, start token bucket when promptly delay variation occurring with transmission time interval;
A2, token bucket issue token with the time interval of setting; The time interval between herein adjacent two tokens being issued is called a token at interval, and for guaranteeing the consistency of receiver side and transmitter side voice rate, token is generally got consistent with the transmission time interval of transmitter side at interval, is 10～50 milliseconds, is generally 20ms; Certainly, be empty if receive formation, the setting-up time that token issues can be postponed on token basis at interval accordingly, can be spaced apart with reference to the time span that each postponement is set with token, for example, for the token interval half or 1/4th;
After A3, reception formation obtain token, take out a speech data frame and carry out follow-up reception processing operation;
Occurring under the situation of delay variation, the time interval that receives between the speech data frame in the formation is compared the variation that there will be two kinds of situations with the transmission time interval of standard: the interval that shake causes dwindles the interval that causes with shake and increases.For the former, by the token that issues by transmission time interval, the interval of standard is gone back in the interval adjustment that can will dwindle; For the latter, when if token issues at interval by token, Frame is still unripe, then working as issuing of time token can be postponed, suppose that the postponement of setting is spaced apart 1/2nd tokens at interval, in the time of once postponing, Frame is received, token successfully issues subsequently, the follow-up like this token time that issues also can correspondingly be postponed 1/2nd tokens at interval, therefore if the delay variation scope of subsequent voice Frame 1/2nd tokens at interval in, then its delay variation can not dock the time interval of receiving Frame again and exerts an influence, the time that this token issues postponement just becomes the inhibition scope of current token bucket to delay variation.But corresponding, the time of postponement also just becomes the additional time delay of receiving data frames.
Obviously, after each postponement at interval, token bucket all can enlarge the inhibition scope of delay variation, but corresponding additional time delay also can increase.Though big jitter suppression scope can be adjusted according to the standard time by full guarantee reception speech data frame at interval, but too much additional time delay also can cause the deviation in transmitter side and the receiver side speech communication appearance synchronously, exigent speech business is disadvantageous for real-time for this, therefore, for fear of the influence of additional time delay to the transmitting-receiving synchronism, can a restriction be set for the number of times of postponing at interval, surpassing this restriction promptly no longer postpones, can reset to token bucket, restart above-mentioned startup and control procedure.
For the concrete subsequent operation of the speech data frame that from receive formation, takes out, can determine generally speaking, following three kinds of situations are arranged according to the position that the present invention program specifically is set in the communication network:
One, is arranged at UE.Use the speech data frame that the present invention program receives UE and carry out jitter suppression control, the speech data frame that takes out from receive formation is sent to that the UE upper strata is resolved and operation such as speech conversion.Because UE is the transmission terminal point of the speech data frame that receives, therefore on UE, carries out jitter suppression control and can reach the best effect of improving communication quality;
Two, be arranged at radio block network gateway.Use the present invention program the speech data frame that is come by the IP backbone transmission that GW receives is carried out jitter suppression control, the speech data frame that takes out from receive formation is transmitted to RAN by GW, and finally sends to UE by RAN.GW is last may to have a plurality of user's voice to connect simultaneously, so speech data frame queue and token bucket need be the unit setting with the IP stream of VOIP.Because the delay variation overwhelming majority who produces among the VOIP is because the transmission in IP network causes, and therefore, the Frame that comes out from IP backbone is shaken control can play substantial improvement to the final voice quality of reception.And, because the shake control operation is arranged on network side, can avoid the difficulty of carrying out terminal staging and keeping consistency, make the present invention program be easier in existing network, use;
Certainly, the speech data frame that the jitter suppression control that is arranged at GW also can enter the IP backbone transmission to the preparation of being sent by UE carries out, to reduce the shake of the Frame that opposite end GW receives, whether needing that the Frame by GW is carried out two-way jitter suppression control can determine according to the overall condition of communication network;
Three, be arranged at wireless access network.RAN is made of radio network controller (RNC:Radio NetworkController) and base station (Node B), can select to shake control setting and carry out on RNC or Node B.Control operation is arranged on RAN and goes up with being arranged on GW and go up similarly, and difference is, when control operation was arranged on GW and goes up, the startup of VOIP bearer path was finished by the IMS territory; When control operation was arranged on the RAN, the startup of VOIP bearer path was partly finished by the core net of radio block network.
Below, on GW, be example with the shake control setting, a kind of application of the present invention program is described.Use the present invention program transmission of VOIP, receiving course signaling process as shown in Figure 4, UE1, RAN1, GW1 are calling party's terminal, wireless access network and gateway among Fig. 4, UE2, RAN2, GW2 are callee's terminal, wireless access network and gateway.For clarity sake, among Fig. 4 with calling UE as transmit leg UE, called UE is as recipient UE; Signaling process among Fig. 4 is:
A1, UE1 send call request message to IMS territory equipment;
A2, IMS forwarded call request message are to UE2;
A3, IMS send carrying and set up request message to GW1, comprise IP 5 tuple information of the call bearer that need be established in this message, that is, and and the IP address/port number of UE1, the IP address/port number of UE2, protocol type;
A4, IMS send carrying and set up request message to GW2, comprise IP 5 tuples in this message;
A5, GW1 set up the IP flow context according to IP 5 tuples, start to suppress the shake token bucket;
A6, GW2 set up the IP flow context according to IP 5 tuples, start to suppress the shake token bucket;
A7, UE1 sampling forms speech data frame;
A8, UE1 send to GW1 with speech data frame by RAN1;
A9, GW1 carry out jitter suppression control;
Packet after a10, GW1 control jitter suppression will send to GW2 by the IP bearer network;
A11, GW2 carry out jitter suppression control;
Speech data frame after a12, GW2 control jitter suppression sends to UE2 by RAN2.
In above-mentioned application examples, GW has carried out jitter suppression control to sending to the IP network side with the speech data frame that sends to the RAN side.
The method of reseptance of embodiment two, a kind of speech data frame, flow process comprise as shown in Figure 5:
B1, when receiving formation and receive first speech data frame, start token bucket; The condition that this example adopts the arrival with first speech data frame to start as token bucket;
B2, start back 1/2nd tokens at token bucket and issue first token at interval the time; To issue spontaneous additional time delay different with being postponed by token among the embodiment one, after token bucket starts, an additional time delay is set automatically promptly in this example, certainly, this is the delay variation inhibition scope of current token bucket just, when token was spaced apart 20ms, it all was suitable between 5～25ms that this inhibition scope is arranged on, and considered the influence to the voice real-time of the general jitter conditions of transmission network and additional time delay, this example is set to 1/2nd tokens at interval, i.e. 10ms;
B3, after issuing first token, issue token at interval one time every a token, be empty if receive formation, then postponement issuing, concrete steps comprise:
B31, when arriving token and issue constantly, judge that whether receive formation is empty, if then carry out B32, then carries out B35 if not;
Whether B32, judgement are postponed the total degree that issues and are surpassed 5 times, if then carry out B33, then carry out B34 if not;
B33, replacement token bucket are waited for the reception of new speech Frame.
B34, token are postponed 1/2nd tokens and are issued at interval; Based among the embodiment one to the description of additional time delay as can be known, after each postponement at interval, the jitter suppression scope of token bucket is that additional time delay all can add corresponding retardation time, therefore preferably the upper limit of additional time delay is limited, generally speaking, when the time delay of voice transmitting-receiving surpasses 100ms, it is apparent in view asynchronous that both call sides will be felt, therefore, it is comparatively suitable between 3～7 times to postpone number of times at interval, and the total degree that in this example postponement is issued is restricted to 5 times, adds the 10ms additional time delay that issues token for the first time like this, total additional time delay is no more than 60ms, can not influence the real-time of conversation when guaranteeing the jitter suppression effect as far as possible;
B35, issue token;
After B4, reception formation obtain token, take out a speech data frame and carry out follow-up reception processing operation; In the present embodiment, can the real-time of speech communication not had a negative impact, also adopts following controlling mechanism receiving formation for further guaranteeing jitter suppression control:
Speech data frame number in receiving formation surpasses when setting queue length, abandons the speech data frame of new reception.Usually can queue length be set to the twice that number of times is postponed at the interval, be set to 10 in this example.If it is long to receive formation, when surpassing 10 Frames, then will newly receives Frame and abandon.
Adopting above-mentioned strategy is in order to control flexibly the additional time delay of current token bucket, because be in this example with the reception of first speech data frame reference point as jitter suppression, but in fact, might just have bigger delay by first Frame itself, like this after the delayed recovery of transmission network is normal, can cause the accumulation of subsequent data frame, influence the real-time of communication; In addition, the repeatedly postponement that token issues also may cause additional time delay long, produces the accumulation of subsequent data frame.Frame drop policy when adopting above-mentioned formation overlength can in time be adjusted by abandoning Frame when additional time delay is long, and additional time delay too much is reduced, thereby guarantees the quality of speech communication.
Embodiment three, a kind of terminal as shown in Figure 6, comprise receiver module 1, voice conversion module 2, token bucket control module 3;
Token bucket control module 3 issues token with the time interval of setting to receiver module 1;
2 pairs of speech data frames of receiving of voice conversion module are resolved and speech conversion.
Applicable embodiment one of the terminal that is provided in the present embodiment or the two jitter suppression control strategies that provide are controlled the speech data frame that is received.
Embodiment four, a kind of radio block network gateway as shown in Figure 7, comprise network connecting module 4, wireless access network link block 5, token bucket control module 6;
Network connecting module 4 receives the speech data frame that transmits through IP network, and successively a speech data frame is sent to wireless access network link block 5 after receiving the token that token bucket control module 6 issues;
Token bucket control module 6 issues token with the time interval of setting to network connecting module 4;
Wireless access network link block 5 sends to the speech data frame of receiving in the wireless access network.
Same applicable embodiment one of the radio block network gateway that is provided in the present embodiment or the two jitter suppression control strategies that provide are controlled the speech data frame that is received.
Certainly, token bucket control module 6 also can be carried out jitter suppression control to the speech data frame that is entered network connecting module 4 by wireless access network link block 5, shown in dotted arrow among Fig. 7, promptly, to all carrying out anti-shake control by the Frame of GW is two-way, concrete executive mode all is identical, and just the flow direction difference of data does not repeat them here.
Below several system architectures of using the inventive method are elaborated.
Embodiment five, a kind of speech communication system as shown in Figure 8, comprise radio block network gateway 7, wireless access network 8, terminal 9, token bucket control module 10;
Radio block network gateway 7 receives the speech data frame that transmits through IP network, and the speech data frame that will obtain token after receiving the token that token bucket control module 10 issues sends to wireless access network 8 successively;
Terminal 9 receives speech data frame from wireless access network 8, and the speech data frame of receiving is resolved and speech conversion;
Token bucket control module 10 issues the speech data frame that token has received for radio block network gateway 7 with the time interval of setting, and the subsequent transmission that radio block network gateway 7 has been received speech data frame is carried out frame period control.
Embodiment six, a kind of speech communication system as shown in Figure 9, comprise radio block network gateway 11, wireless access network 12, terminal 13, token bucket control module 14;
Radio block network gateway 11 receives the speech data frame that transmits through IP network, and speech data frame is sent to wireless access network 12;
Token bucket control module 14 issues the speech data frame that token has received for wireless access network 12 with the time interval of setting, and the subsequent transmission that wireless access network 12 has been received speech data frame is carried out frame period control.
Embodiment seven, a kind of speech communication system as shown in figure 10, comprise radio block network gateway 15, wireless access network 16, terminal 17, token bucket control module 18;
Radio block network gateway 15 receives the speech data frame that transmits through IP network, and speech data frame is sent to wireless access network 16;
Token bucket control module 18 issues the speech data frame that token has received for terminal 17 with the time interval of setting, and frame period control is carried out in the subsequent voice parsing and the conversion that terminal 17 have been received speech data frame.
In above-mentioned three embodiment, provided the different system version of several employings token bucket control of the present invention voice method of reseptance.From above-mentioned example as can be seen, enter the wireless receiving network side in this section transmission course of terminal at the ip voice bag, can adopt token bucket that the transmission intercal of speech data frame is controlled and adjusted, difference only is the difference at concrete control point, can select appropriate system results to realize according to the real network situation.
More than method of reseptance and relevant terminal, radio block network gateway and the speech communication system of speech data frame provided by the present invention is described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (14)
1, a kind of method of reseptance of speech data frame is characterized in that, comprising:
The start-up control speech data frame receives the token bucket of formation;
Token bucket issues token with the time interval of setting;
After receiving formation acquisition token, take out a speech data frame and carry out follow-up reception processing operation.
2, the method for reseptance of speech data frame according to claim 1 is characterized in that: start token bucket when first speech data frame is received in the reception formation.
3, the method for reseptance of speech data frame according to claim 1 is characterized in that: token bucket 1/2nd tokens after startup issue first token at interval the time, issue token at interval one time every a token later on.
4, the method for reseptance of speech data frame according to claim 3 is characterized in that: described token span at interval is 10～50 milliseconds.
5, according to the method for reseptance of any described speech data frame of claim 1～4, it is characterized in that: receive formation when issuing as if token for empty, then the time intervals of token postponement 1/2nd settings issue.
6, the method for reseptance of speech data frame according to claim 5 is characterized in that: the total degree of described postponement is no more than the interval of setting and postpones number of times.
7, the method for reseptance of speech data frame according to claim 6 is characterized in that: the speech data frame number in the described reception formation surpasses when setting queue length, abandons the speech data frame of new reception.
8, the method for reseptance of speech data frame according to claim 7 is characterized in that: it is 3～7 times that number of times is postponed at described interval, and described queue length is the twice that number of times is postponed at described interval.
9, a kind of terminal comprises receiver module and voice conversion module, it is characterized in that: also comprise the token bucket control module,
Described receiver module receives the speech data frame that network side sends, and successively a speech data frame is sent to described voice conversion module after receiving the token that described token bucket control module issues;
Described token bucket control module issues token with the time interval of setting to described receiver module;
Described voice conversion module is resolved and speech conversion the speech data frame of receiving.
10, a kind of radio block network gateway comprises network connecting module, wireless access network link block, it is characterized in that: also comprise the token bucket control module,
Described network connecting module receives the speech data frame that transmits through the internet, and successively a speech data frame is sent to described wireless access network link block after receiving the token that described token bucket control module issues;
Described token bucket control module issues token with the time interval of setting to described network connecting module;
Described wireless access network link block sends to the speech data frame of receiving in the wireless access network.
11, a kind of speech communication system comprises radio block network gateway, wireless access network, terminal;
Described radio block network gateway receives speech data frame, and speech data frame is sent to described wireless access network;
Described wireless access network receives speech data frame from described radio block network gateway, is transmitted to described terminal;
Described terminal receives speech data frame from described wireless access network, and the speech data frame of receiving is resolved and speech conversion;
It is characterized in that: also comprise the token bucket control module, described token bucket control module is controlled the speech data frame that has received, the time interval with setting issues token, and the described speech data frame that has received enters follow-up reception successively and handles after obtaining token.
12, speech communication system according to claim 11, it is characterized in that: described token bucket control module is controlled the speech data frame that described radio block network gateway has received, and the speech data frame that described radio block network gateway will obtain token sends to described wireless access network successively.
13, speech communication system according to claim 11, it is characterized in that: described token bucket control module is controlled the speech data frame that described wireless access network has received, and the speech data frame that described wireless access network will obtain token is transmitted to described terminal successively.
14, speech communication system according to claim 11 is characterized in that: described token bucket control module is controlled the speech data frame that described terminal has received, and described terminal is resolved and speech conversion successively to the speech data frame that obtains token.
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| US8873543B2 (en) * | 2008-03-07 | 2014-10-28 | Arcsoft (Shanghai) Technology Company, Ltd. | Implementing a high quality VOIP device |
| CN103338119B (en) | 2013-06-08 | 2014-12-31 | 腾讯科技（深圳）有限公司 | Voice channel distribution method and voice system |
| CN104333882A (en) * | 2014-10-27 | 2015-02-04 | 浪潮电子信息产业股份有限公司 | Wireless network traffic control method |
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| CN1531276A (en) * | 2003-03-13 | 2004-09-22 | 华为技术有限公司 | Self adaptable jitter caching method for eliminating IP speech data jitter |
| CN1555185A (en) * | 2003-12-25 | 2004-12-15 | 海信集团有限公司 | IP cell phone |
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| CN1531276A (en) * | 2003-03-13 | 2004-09-22 | 华为技术有限公司 | Self adaptable jitter caching method for eliminating IP speech data jitter |
| CN1555185A (en) * | 2003-12-25 | 2004-12-15 | 海信集团有限公司 | IP cell phone |
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