CN101365186A - Uplink uncontinuous speec transmission method and device for A interface based on IP bearing - Google Patents
Uplink uncontinuous speec transmission method and device for A interface based on IP bearing Download PDFInfo
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Abstract
The invention discloses an uplink discontinuous speech transmission method and a device based on an IP-loaded interface A. The method comprises the following steps: a base station controller based on the IP-loaded interface A only sends comfortable noise frames and speech frames to a gateway; and the gateway recovers the speech service frame sequence in the frame interpolation manner. By adopting the uplink discontinuous speech transmission method and the device based on the IP-loaded interface A, the internet bandwidth resource can be saved on the premise that the transmission quality is not influenced, and the original uplink DTX speech transmission device architecture can be maintained to the greatest extend, thereby facilitating the update and transformation of the system.
Description
Technical field
The present invention relates to voice transmission technology, particularly relate to a kind of uplink uncontinuous speec transmission method and device of the A interface based on IP carrying.
Background technology
Global system for mobile communications (GSM, Global System for Mobile Communications) be most popular a kind of communication system in the mobile communication, its equipment for radio access network is commonly referred to base station sub-system (BSS, Base Station System).The effect that BSS plays in GSM is: on the one hand, BSS links to each other by the same portable terminal of wireless network (MS, Mobile Station), carries out transmission, reception and the RRM of wireless signal; On the other hand, BSS and core net (CN, Core Network) links to each other, CN comprises Mobile Switching Center Server (MSC Server, Mobile Switching Center Server) and media gateway (MGW, Media Gateway) etc., realize functions such as communicating to connect between the MS or between MS and the fixed network users, transfer system information and user profile.
As shown in Figure 1, typical B SS comprises two logical nodes: base station controller (BSC, Base StationController) 1 and base transceiver station (BTS, Base Transceiver Station) 2.Communication interface between BSC 1 and the BTS2 is called Abis interface, is used to realize that the far-end between BSC 1 and the BTS 2 interconnects.Generally, Abis interface adopts the 2.048Mbps of standard or pulse code modulation (PCM, the PulseCode Modulation) digital transmission link of 64Kbps to realize transfer of data, carry voice traffic channel on it.The frame structure that transmits in the Abis interface meets the structure of code conversion and Rate Adapter Unit (TRAU, Transcoding andRate Adaptation Unit) frame.
For a voice traffic channel, transmit the speech business frame of a trau frame structure between BSC 1 and the BTS 2 every 20ms, this speech business frame comprises 320bit or 160bit data, correspond respectively to full rate speech traffic channel and half-rate speech Traffic Channel, the transmission rate that is to say this voice traffic channel is 16Kbps or 8Kbps.Wherein, according to the difference of code rate, the speech business frame comprises full rate (FR, Full Rate) speech business frame, enhanced full rate (EFR, Enhanced Full Rate) speech business frame, half rate (HR, Half Rate) speech business frame etc.
Communication interface between BSC 1 and the MGW 3 is called the A interface, data code flow is the pcm encoder signal of the G.711 form of 64Kbit/s in the A interface, all different with voice traffic channel speed and coded system in the Abis interface, so increased TRAU in BSC 1 one sides, TRAU can will be the coded voice signal of voice traffic channel in the Abis interface from the pcm encoder conversion of signals of A interface, and makes corresponding rate adapted; Perhaps, conversely the coded voice signal of voice traffic channel in the Abis interface is converted to the pcm encoder signal in the A interface, and makes corresponding rate adapted.
Voice transfer in the communication has dual mode: a kind of is no matter the user whether in speech, all carries out continuous coding and transmission to voice signal; Another kind is discontinuous transmission (DTX, Discontinuous Transmis-sion).Shown in Fig. 2 a, in up DTX voice transfer link, in the voice activation phase, the every 20ms of MS sends a frame that comprises voice messaging to BTS, is designated the rectangular block that grid is filled among Fig. 2 a.By BTS this voice messaging is formed the speech business frame of trau frame structure, the speech business frame of this moment has carried voice signal, is called speech frame.BSC carries out this speech frame to send to MGW after code conversion and the rate adapted, and the rectangular block that Fig. 2 b bend is filled is the data after BSC sends to the speech frame code conversion of MGW.
At the non-active period of voice, the every 480ms of MS sends a frame that comprises the comfort noise characteristic parameter to BTS, among Fig. 2 a by the space rectangles block identification, the speech business frame of this frame being formed the trau frame structure by BTS, what the speech business frame of this moment carried is the comfort noise characterisitic parameter, is called the comfort noise frame.This comfort noise frame is carried out code conversion to BSC and rate adapted sends to MGW, and the rectangular block of point-like pattern fills is the data after BSC sends to the comfort noise frame code conversion of MGW among Fig. 2 b.In 480 ms intervals, what BTS received all is useless noise information, can only form bad frame, and BTS sends these bad frames via BSC to MGW, the rectangular block sign bad frame of being filled by black among Fig. 2 b.
In order to guarantee continuity, BSC sends to MGW with bad frame and invalid comfort noise frame.BTS sends in the speech business frame of BSC, the parameter relevant with the DTX transmission means, the DTX Control Parameter comprises bad frame indication (BFI, Bad Frame Indication), quiet indication (SID, Silence Descriptor) etc., the implication of its value and representative is as shown in table 1, and table 1 is to transmit the relevant parameter value and the implication of representative thereof with up DTX.
Table 1
Wherein, after effectively the SID frame is meant decoding, be defined as the speech business frame of effective comfort noise frame by power differentiation or other discriminant approaches; And invalid SID frame can not belong to the comfort noise frame after being meant decoding, can not belong to the speech business frame of speech frame, is also referred to as invalid comfort noise frame.Effectively comfort noise frame and invalid comfort noise frame are referred to as the comfort noise frame.In the prior art,, still send it to MGW, and these frames can't be decoded and are reduced into voice signal, have in fact caused the waste of bandwidth resources because BSC receives after bad frame, the invalid comfort noise frame.
Adopt the DTX mode can reduce aerial total interference level, improve system effectiveness, also can reduce the power consumption of radio receiving-transmitting unit simultaneously, this advantage is particularly evident for portable terminal.The concrete handling process of DTX voice transfer for FR, EFR and HR business sees also 3GPP TS 46.031,3GPP TS 46.081 and 3GPP TS 46.041, is not described in detail in this.
Along with Softswitch technology is introduced core net, IP-based switching network framework forms gradually.Wherein, the A interface based on the IP carrying has higher efficiency of transmission and flexibility with respect to traditional A interface based on PCM transmission link.A interface based on the IP carrying abbreviates the AoIP interface as.Based on the up DTX speech transmission device structure of AoIP interface as shown in Figure 3, the both sides that the AoIP interface connects are still BSC and MGW, in order to adapt to traditional circuit exchange mode, with transcoder unit (TC, Transcoder) be arranged on MGW one side, carry out code conversion with the speech business frame that transmission in the AoIP interface is come, send in the upstream Interface of MGW.At this moment, Abis interface can be based on the IP transmission means, is called the IP Abis interface, also can be based on the Abis interface of original circuit-switched transfer mode.
Because A interface transmission link no longer is restricted to the pcm stream of 64Kbps, and adopt IP transmission circuit flexibly, so, if the AoIP interface continues to adopt original transmission means, send the speech business frame sequence that comprises speech frame, effective comfort noise frame, bad frame, invalid comfort noise frame by BSC to MGW, will cause the unnecessary waste of Internet resources.Analyze according to statistics, there is the time of 60%-70% to be in the non-active period of voice in the communication process, that is to say, in up DTX voice transfer link, BSC is in the speech business frame sequence that MGW sends, have only about half of speech business frame to belong to bad frame or invalid comfort noise frame, this situation is a kind of tangible wasting of resources for for the AoIP interface.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method of the up DTX voice transfer based on the AoIP interface, can solve BSC and transmit useless frame and the wasting of resources problem that causes to MGW, reaches the purpose of conserve network resources.
Another object of the present invention is to provide a kind of device of the up DTX voice transfer based on the AoIP interface, can abandon bad frame and invalid comfort noise frame and recover the speech business frame sequence, and then reach the purpose of conserve network resources.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of method of uplink uncontinuous speec transmission of the A interface based on IP carrying, this method may further comprise the steps: only send comfort noise frame and speech frame to gateway based on the base station controller of the A interface of IP carrying; Gateway device recovers the speech business frame sequence by the mode of mending frame.
Wherein, described comfort noise frame is effective comfort noise frame and/or invalid comfort noise frame.
Further comprise between two steps of the method for the uplink uncontinuous speec transmission of the A interface based on IP carrying of the present invention: judge whether that the speech business frame that need come the A interface transmission based on the IP carrying carry out code conversion, if desired, execution in step B then, otherwise directly the speech business frame that will come based on the A interface transmission of IP carrying sends in the upstream Interface.
Further comprise after the method for the uplink uncontinuous speec transmission of the A interface based on IP carrying of the present invention: described speech business frame sequence is carried out code conversion, again the speech business frame after the code conversion is sent to the upstream Interface of gateway.
Wherein, described benefit frame is: in the voice activation phase, if gateway can not be received speech frame in the fixed cycle, then to full-rate speech traffic, replenish empty frame or bad frame by the fixed cycle, the professional and enhanced full rate speech business to half-rate speech is replenished bad frame by the fixed cycle; At the non-active period of voice,, then full-rate speech traffic, half-rate speech business and enhanced full rate speech business are all replenished bad frame by the fixed cycle if gateway can not be received the comfort noise frame in the fixed cycle.Wherein, the described fixed cycle is 20ms.
Wherein, the constructor of described speech business frame is compiled in collaboration with the structure of sign indicating number conversion and Rate Adapter Unit frame or is met the frame structure that RFC3551 limits.
A kind of device of uplink uncontinuous speec transmission of the A interface based on IP carrying, described device comprises: the frame detecting unit of the Rate Adapter Unit of side of base station controller and frame sending controling unit and gateway side, wherein, the Rate Adapter Unit of side of base station controller, be used for the speech business frame of receiving based on the A interface of IP carrying is carried out rate adapted, obtain discontinuous transmission control parameters; The frame sending controling unit of side of base station controller is used for only sending speech frame and comfort noise frame to gateway according to discontinuous transmission control parameters control base station controller; The frame detecting unit of gateway side is used for recovering the speech business frame sequence by the mode of mending frame.
The device of the uplink uncontinuous speec transmission of the A interface based on IP carrying of the present invention also comprises the transcoder unit and the speech business frame retransmission unit of gateway side, wherein, transcoder unit is used for the speech business frame sequence that needs that the frame detecting unit to gateway side recovered carry out code conversion and carries out code conversion; Speech business frame retransmission unit is used for the speech business frame that does not need to carry out code conversion that gateway is received is directly transmitted.
A kind of gateway of realizing the uplink uncontinuous speec transmission, described gateway comprises the frame detecting unit, described frame detecting unit is used for recovering the speech business frame sequence by the mode of mending frame.
The gateway of uplink uncontinuous speec transmission of the present invention, also comprise transcoder unit and speech business frame retransmission unit, wherein, transcoder unit is used for the speech business frame sequence that the needs that the frame detecting unit is recovered carry out code conversion is carried out the code conversion operation; Speech business frame retransmission unit is used for the speech business frame that does not need to carry out code conversion that gateway is received is directly transmitted operation.
A kind of base station controller of realizing uplink uncontinuous speec transmission based on the A interface of IP carrying, described base station controller comprises Rate Adapter Unit and frame sending controling unit, wherein, Rate Adapter Unit is used for obtaining discontinuous transmission control parameters from the speech business frame of receiving based on the A interface of IP carrying; The frame sending controling unit is used for only sending speech frame and comfort noise frame to gateway according to discontinuous transmission control parameters control base station controller.
The present invention is based on the up DTX voice transmission method of AoIP interface, BSC only sends speech frame and comfort noise frame to the MGW based on the AoIP interface, therefore can avoid in the up DTX voice transmission method of AoIP interface transmission for bad frame, invalid comfort noise frame, under the situation that does not influence voice quality, can reduce taking of transmission bandwidth, therefore can conserve network resources, and then can effectively reduce the transmission cost of AoIP interface.And the inventive method does not limit the frame structure of AoIP interface uplink, and the frame structure that the trau frame that transmits in the compatible original Abis interface of energy and other type comprise speech payload is widely applicable.
In addition, the up DTX speech transmission device that the present invention is based on the AoIP interface is on the basis of existing up DTX speech transmission device based on the A interface, increased the frame sending controling unit and the frame detecting unit forms, this framework can keep original up DTX speech transmission device framework as far as possible, makes things convenient for system upgrade and transformation.
Description of drawings
Fig. 1 is the up DTX speech transmission device structural representation of prior art based on the A interface;
Fig. 2 a is prior art sends to BTS based on MS in the up DTX voice transmission method of A interface a frame sequence structure chart;
Fig. 2 b is prior art sends to MGW based on BSC in the up DTX voice transmission method of A interface a data structure diagram;
Fig. 3 is the up DTX speech transmission device structural representation that the present invention is based on the AoIP interface;
Fig. 4 is the internal structure schematic diagram that the present invention is based on the up DTX speech transmission device of AoIP interface;
Fig. 5 is the flow chart that the present invention is based on the up DTX voice transmission method of AoIP interface;
Fig. 6 is the state exchange schematic diagram that the present invention is based in the up DTX voice transfer of the AoIP interface process.
Embodiment
The present invention is further described in more detail below in conjunction with drawings and the specific embodiments.
Core concept of the present invention is: BSC only sends speech frame and comfort noise frame to MGW, and MGW recovers the speech business frame sequence by mending the frame mode.
For realizing the present invention is based on the up DTX voice transmission method of AoIP interface, the present invention adopts the up DTX speech transmission device based on the AoIP interface as shown in Figure 4, and in this device, BSC one side comprises Rate Adapter Unit 101 and frame sending controling unit 102; And comprise frame detecting unit 201, TC202 and speech business frame retransmission unit 203 in MGW one side, wherein,
The speech business frame that transmission comes in the Abis interface can be traditional trau frame structure, also can be other frame structure that comprises speech payload, for example frame structure that RFC3551 limited.When the speech business frame that comes when transmission in the Abis interface was traditional trau frame, Rate Adapter Unit 101 directly obtained DTX Control Parameter such as SID, BFI from trau frame.The speech business frame that comes when transmission in the Abis interface is that the frame structure that limits of RFC3551 or other are when similarly comprising the frame structure of speech payload, Rate Adapter Unit 101 can obtain the DTX Control Parameter from the corresponding network transport protocol header of carrying this speech business frame, for example: obtain the DTX Control Parameter from RTP packet header or from the special parameter field of this speech business frame.
Frame sending controling unit 102 is used for the Control Parameter according to DTX, and control BSC sends speech frame and comfort noise frame to MGW.
Carry out frame when sending control, two kinds of schemes are arranged: a kind ofly be, BSC sends speech frame and comfort noise frame to MGW, and promptly BFI and SID are 0 speech business frame, and BFI is 0, SID is 1 or 2 speech business frame; Second kind is, BSC sends speech frame and effective comfort noise frame to MGW, and promptly BFI and SID are 0 speech business frame, and BFI is 0, SID is 2 speech business frame, selects which kind of scheme to depend on actual needs.
If in the MGW upstream Interface with the AoIP interface in the digital coding mode transmitted inconsistent, just need MGW to carry out code conversion.Concrete, in the voice activation phase, when frame detecting unit 201 is received a speech frame every the fixed cycle, be about to this frame and DTX Control Parameter thereof and send to TC202, when if frame detecting unit 201 is not received speech frame every the fixed cycle, then, different service types is taked different processing modes:, send to TC 202 behind optional short covering frame or the bad frame for the FR business according to the regulation of 3GPP TS48.060; For the EFR business, send to TC 202 behind the benefit bad frame; For the HR business; Send to TC 202 after mending bad frame.
At the non-active period of voice, when frame detecting unit 201 is received a comfort noise frame every the fixed cycle, be about to this frame and DTX Control Parameter thereof and send to TC 202, simultaneously, frame detecting unit 201 is also filled another and relevant Control Parameter--the time unifying sign (TAF of DTX transmission, Time Alignment Flag) is 1, sends to TC 202 together.If frame sends the 201 fixed interval cycles of detecting unit and does not receive the comfort noise frame, then replenish a bad frame and send to TC 202, in said process, this fixed cycle can with prior art in consistent, be 20ms, also can be the time period of other predetermined length.Wherein, bad frame is meant that BFI is 1 frame, and the structure of empty frame and filling content are referring to the definition among 3GPP TS 48.060 and the 3GPP TS 48.061.If consistent in the MGW upstream Interface with the digital coding mode transmitted in the AoIP interface, then do not need MGW to carry out code conversion, frame detecting unit 201 directly sends to speech business frame retransmission unit 203 with speech frame and the comfort noise frame of receiving.
Corresponding according to two kinds of schemes transmission comfort noise frames with frame sending controling unit 102, the comfort noise frame that frame detecting unit 201 receives is effective comfort noise frame and/or invalid comfort noise frame.
Because frame detecting unit 201 recovered complete speech business frame sequence, so consistent in the treatment mechanism of TC and the prior art.When the speech business frame sequence did not need to carry out code conversion, TC 202 can omit.
Speech business frame retransmission unit 203, the speech business frame that is used for not needing to carry out code conversion directly sends to the upstream Interface of MGW.When the speech business frame sequence need carry out code conversion, speech business frame retransmission unit 203 can omit.
As shown in Figure 5, the up DTX voice transmission method that the present invention is based on the AoIP interface may further comprise the steps:
Step 301: the BSC based on the AoIP interface carries out rate adapted to BTS by the speech business frame that the Abis interface transmission comes, and obtains the DTX Control Parameter.
The speech business frame that transmission comes in the Abis interface can be traditional trau frame structure, also can be other frame structure that comprises speech payload, for example frame structure that RFC3551 limited.When the speech business frame that comes when transmission in the Abis interface was traditional trau frame, BSC directly obtained DTX Control Parameter such as SID, BFI from trau frame.The speech business frame that comes when transmission in the Abis interface is that the frame structure that limits of RFC3551 or other are when similarly comprising the frame structure of speech payload, BSC can obtain the DTX Control Parameter from the corresponding network transmission protocol packet header of carrying this speech business frame, for example obtains the DTX Control Parameter from RTP packet header or from the special parameter field of this speech business frame.
Step 302:BSC sends speech frame and comfort noise frame according to the DTX Control Parameter to MGW.
Two kinds of selection schemes are arranged in the step 302, be respectively: scheme one, BSC sends speech frame and comfort noise frame to MGW, and promptly to send BFI and SID to MGW all be 0 speech business frame to BSC, and BFI is 0, SID is 1 or 2 speech business frame; Scheme two, BSC sends speech frame and effective comfort noise frame to MGW, and promptly to send BFI and SID to MGW all be 0 speech business frame to BSC, and BFI is 0, SID is 2 speech business frame.Carry out for the selection of scheme one or scheme two needs according to actual conditions.
Step 303: judge whether to need to carry out code conversion, if desired, execution in step 304, otherwise execution in step 306.
Here, described to judge actual be to judge whether the digital coding mode of transmitting in MGW upstream Interface and the AoIP interface is inconsistent, if inconsistent, then needs the speech business frame that transmission in the AoIP interface comes is carried out code conversion.
Step 304:MGW utilizes the mode of mending frame to recover the speech business frame sequence.
Here, MGW takes different reset modes respectively under two kinds of situations:
In the voice activation phase, if abnormal conditions such as error of transmission cause MGW not receive speech frame every the fixed cycle, then according to the regulation of 3GPP TS48.060, MGW takes different reset modes to different service types: for the FR business, optional empty frame or bad frame replenish; For EFR and HR business, replenish bad frame.
At the non-active period of voice, if selection scheme one in the step 302, then MGW is after receiving the comfort noise frame, and it is 1 operation that this comfort noise frame is filled TAF; If MGW does not receive the comfort noise frame every the fixed cycle, MGW reset mode that all types of service are all taked to replenish bad frame then, this moment, the comfort noise frame comprised effective comfort noise frame and invalid comfort noise frame simultaneously;
If selection scheme two in the step 302, MGW is after receiving effective comfort noise frame, and promptly this comfort noise frame being filled TAF is 1 operation; When if MGW does not receive effective comfort noise frame every the fixed cycle, then MGW all takes to replenish the reset mode of bad frame to all business.
Thus, MGW replenishes bad frame and/or empty frame in voice activation phase and non-active period, recovers the speech business frame sequence of fixed cycle, and wherein, the described fixed cycle can be the same with prior art, is 20ms, also can be the time period of other predetermined length.
Here, bad frame is meant that BFI is 1 frame, and the structure of empty frame and filling content are referring to the definition among 3GPP TS48.060 and the 3GPP TS 48.061.
Step 305: the speech business frame sequence that recovers is carried out the code conversion operation, finish current handling process.
Because MGW recovers complete speech business frame sequence by execution in step 304, so the operation of the code conversion in this step is similar with prior art.
Step 306: the speech business frame that does not need to carry out code conversion is directly transmitted.
In up DTX voice transfer process, when the speech business frame does not need to carry out code conversion, when for example the upstream Interface of MGW also adopts the IP network transmission, do not need the speech business frame is carried out code conversion, the upstream Interface that the speech business frame that directly will receive from Abis interface is transmitted to MGW gets final product.
For a complete up DTX voice transfer process, in general comprise three kinds of different transmission states, as shown in Figure 6, be respectively: the initial period in the up DTX voice transfer process, voice activation phase and the non-active period of voice.Wherein, initial period is meant the period when any calling useless exists, do not transmit any speech frame or comfort noise frame in the up DTX voice transfer A interface this moment, transfers to the voice activation phase behind call setup, and this moment, BSC sent speech frame to MGW by the fixed cycle; Then be transferred to the non-active period of voice in the voice activation phase if BSC sends the comfort noise frame to MGW, this moment, BSC only sent the comfort noise frame to MGW, and did not send bad frame; Send speech frame at the non-active period BSC of voice to MGW and then enter the voice activation phase once more; When voice activation phase or the non-active period of voice are received call release message, come back to initial period.
The above is preferred embodiment of the present invention only, is not to be used for limiting protection scope of the present invention.Those skilled in that art should be able to associate; mode with other agreement in the AoIP interface encapsulates the speech business frame; adopt alternate manner sign speech frame or comfort noise frame and bad frame based on the up DTX voice transfer in the AoIP interface; the voice signal that is transmitted adopts the coded system of different rates and type, all should belong to protection scope of the present invention.
Claims (12)
1. method based on the uplink uncontinuous speec transmission of the A interface of IP carrying is characterized in that this method may further comprise the steps:
A, only send comfort noise frame and speech frame to gateway based on the base station controller of the A interface of IP carrying;
B, gateway device recover the speech business frame sequence by the mode of mending frame.
2. the method for the uplink uncontinuous speec transmission of the A interface based on IP carrying according to claim 1 is characterized in that described comfort noise frame is effective comfort noise frame and/or invalid comfort noise frame.
3. the method for the uplink uncontinuous speec transmission of the A interface based on IP carrying according to claim 1, it is characterized in that, further comprise between steps A and the step B: judge whether that the speech business frame that need come the A interface transmission based on the IP carrying carries out code conversion, if desired, execution in step B then, otherwise directly the speech business frame that will come based on the A interface transmission of IP carrying sends in the upstream Interface.
4. according to the method for the uplink uncontinuous speec transmission of each described A interface based on IP carrying in the claim 1 to 3, it is characterized in that, further comprise after the described step B: described speech business frame sequence is carried out code conversion, again the speech business frame after the code conversion is sent to the upstream Interface of gateway.
5. the method for the uplink uncontinuous speec transmission of the A interface based on IP carrying according to claim 4 is characterized in that the described benefit frame of step B is:
In the voice activation phase, if gateway can not be received speech frame in the fixed cycle,, replenish empty frame or bad frame by the fixed cycle then to full-rate speech traffic, the professional and enhanced full rate speech business to half-rate speech is replenished bad frame by the fixed cycle;
At the non-active period of voice,, then full-rate speech traffic, half-rate speech business and enhanced full rate speech business are all replenished bad frame by the fixed cycle if gateway can not be received the comfort noise frame in the fixed cycle.
6. the method for the uplink uncontinuous speec transmission of the A interface based on IP carrying according to claim 5 is characterized in that the described fixed cycle is 20ms.
7. the method for the uplink uncontinuous speec transmission of the A interface based on IP carrying according to claim 1, it is characterized in that the constructor of described speech business frame is compiled in collaboration with the structure of sign indicating number conversion and Rate Adapter Unit frame or met the frame structure that RFC3551 limits.
8. device based on the uplink uncontinuous speec transmission of the A interface of IP carrying is characterized in that described device comprises: the frame detecting unit of the Rate Adapter Unit of side of base station controller and frame sending controling unit and gateway side, wherein,
The Rate Adapter Unit of side of base station controller is used for the speech business frame of receiving based on the A interface of IP carrying is carried out rate adapted, obtains discontinuous transmission control parameters;
The frame sending controling unit of side of base station controller is used for only sending speech frame and comfort noise frame to gateway according to discontinuous transmission control parameters control base station controller;
The frame detecting unit of gateway side is used for recovering the speech business frame sequence by the mode of mending frame.
9. the device of the uplink uncontinuous speec transmission of the A interface based on IP carrying according to claim 8 is characterized in that described device also comprises the transcoder unit and the speech business frame retransmission unit of gateway side, wherein,
Transcoder unit is used for the speech business frame sequence that needs that the frame detecting unit to gateway side recovered carry out code conversion and carries out code conversion;
Speech business frame retransmission unit is used for the speech business frame that does not need to carry out code conversion that gateway is received is directly transmitted.
10. a gateway of realizing the uplink uncontinuous speec transmission is characterized in that described gateway comprises the frame detecting unit, and described frame detecting unit is used for recovering the speech business frame sequence by the mode of mending frame.
11. the gateway of realization uplink uncontinuous speec transmission according to claim 10 is characterized in that described gateway also comprises transcoder unit and speech business frame retransmission unit, wherein,
Transcoder unit is used for the speech business frame sequence that the needs that the frame detecting unit is recovered carry out code conversion is carried out the code conversion operation;
Speech business frame retransmission unit is used for the speech business frame that does not need to carry out code conversion that gateway is received is directly transmitted operation.
12. the base station controller based on the A interface of IP carrying of realizing uplink uncontinuous speec transmission is characterized in that described base station controller comprises Rate Adapter Unit and frame sending controling unit, wherein,
Rate Adapter Unit is used for obtaining discontinuous transmission control parameters from the speech business frame of receiving based on the A interface of IP carrying;
The frame sending controling unit is used for only sending speech frame and comfort noise frame to gateway according to discontinuous transmission control parameters control base station controller.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011009379A1 (en) * | 2009-07-20 | 2011-01-27 | 中国移动通信集团北京有限公司 | Method, apparatus and wireless communication system for controlling downlink discontinuous transmission state |
| WO2011015058A1 (en) * | 2009-08-06 | 2011-02-10 | 中兴通讯股份有限公司 | System and method for packet data transmission |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011009379A1 (en) * | 2009-07-20 | 2011-01-27 | 中国移动通信集团北京有限公司 | Method, apparatus and wireless communication system for controlling downlink discontinuous transmission state |
| CN101959317B (en) * | 2009-07-20 | 2012-10-31 | 中国移动通信集团北京有限公司 | Downlink discontinuous transmission state control method, device and wireless communication system |
| WO2011015058A1 (en) * | 2009-08-06 | 2011-02-10 | 中兴通讯股份有限公司 | System and method for packet data transmission |
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