CN101043756B - Processing method, device and system for special services after IP-based core network - Google Patents
Processing method, device and system for special services after IP-based core networkDownload PDFInfo
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- CN101043756B CN101043756BCN2007100976273ACN200710097627ACN101043756BCN 101043756 BCN101043756 BCN 101043756BCN 2007100976273 ACN2007100976273 ACN 2007100976273ACN 200710097627 ACN200710097627 ACN 200710097627ACN 101043756 BCN101043756 BCN 101043756B
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Abstract
Translated fromChinese
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of processing method, Apparatus and system of special service after IP core network.
Background technology
In traditional C DMA (code division multiple access) network, what core-network side adopted is ISUP (ISUP) networking, the data flow that BSC (base station controller) side sends is transparent transmission (leading under the situation of unanimity at network TDM A/U) in core-network side, portable terminal, BTS (base station), BSC (base station controller) cooperation can be finished a lot of special business like this, described particular service comprises: portable terminal secure service, secure service of contracting with mobile supplier etc.For example, can transmit the enciphered message of special processing on the portable terminal by in BSC side conversion bear format.
The network architecture of CDMA as shown in Figure 1 at present, under cdma network is used, after setting up voice call, portable terminal can be initiated the particular service indication, BSC is after receiving the particular service indication, language stream is switched to ISLP (interconnection protocol between system) mode, and particular service information is transmitted by the ISLP mode.Described ISLP is an interconnection protocol between network in the cdma network, finishes adaptive to TDM (time division multiplexing) side 64K data of packet side data by asynchronous system, and its synchronous Flag adopts 0x7e, and concrete ISLP processing mode can be referring to TIA/EIA PN-3660.
Under the trend of present network IPization, also in IPization progressively, the tandem office that its a kind of evolution mode is a core net is evolved into the VOIP mode to core net, transmits by IP between MGW and the MGW, and this mode is commonly referred to as mobile T office, as shown in Figure 2.Another kind of scene for A mouth IP transforms networking diagram, is all transmitted by IP between BSC and the MGW and between MGW and the MGW as shown in Figure 3; Figure 4 shows that A mouth IP transforms networking diagram, transmits by IP between BSC and the MGW.
Because VOIP has introduced compression coding and decoding in core-network side, be used to improve the voice speech channel number of IP network carrying.Main EVRC (enhancement mode variable Rate encoding and decoding speech), QCELP13K (the 13K QCELP variable Rate encoding and decoding speech) equipressure that adopts is reduced the staff decoding in cdma network, and this compression coding and decoding is lossy compression method normally.Like this, just have a problem, after the tandem office of core-network side finishes the transformation of T office, original particular service can't pass through core net, cause service fail.That is to say that the improved core net of T office can't finish original particular service.
Summary of the invention
The embodiment of the invention provides a kind of processing method, Apparatus and system of special service after IP core network, has solved the problem that current core net carries out can't realizing after IP transforms particular service.
The embodiment of the invention is achieved through the following technical solutions:
The embodiment of the invention provides a kind of processing method of special service after IP core network, comprising:
The particular service sign of the code stream by detect adopting the time division multiplexing mode transmission perhaps detects the predefined bearer types value that adopts the code stream that the IP mode transmits, and discerns particular service; When the tandem office of described core net was evolved into the ip voice form, the method for described identification particular service specifically comprised: interconnection protocol synchronous head and frame head information between real-time detecting system; Judge whether to reach the thresholding of judgement particular service,, then determine to have detected particular service if reach;
The current business bearing mode is switched to described particular service can transmission manner.
The embodiment of the invention provides a kind of media gateway, comprising:
Particular service detection module one is used for discerning particular service by interconnection protocol synchronous head between system and frame head information are detected; When the tandem office of core net was evolved into the ip voice form, the method for described identification particular service comprised: interconnection protocol synchronous head and frame head information between real-time detecting system; Judge whether to reach the thresholding of judgement particular service,, then determine to have detected particular service if reach;
Particular service processing module one is used to receive the testing result of described particular service detection module one, and after determining to detect particular service, control switches to described particular service with current bearing mode can transmission manner.
The embodiment of the invention provides a kind of media gateway, comprising:
Particular service detection module one is used for discerning particular service by interconnection protocol synchronous head between system and frame head information are detected; When the tandem office of core net was evolved into the ip voice form, the method for described identification particular service comprised: interconnection protocol synchronous head and frame head information between real-time detecting system; Judge whether to reach the thresholding of judgement particular service,, then determine to have detected particular service if reach;
The particular service reporting module is used for the testing result of described particular service detection module one is reported Media Gateway Controller;
Particular service processing module one, be used for control current bearing mode is switched to described particular service can transmission manner.
The embodiment of the invention provides a kind of Media Gateway Controller, comprising:
Switch indicating module, be used to receive the particular service testing result, after determining to detect particular service, issue and switch indication, can transmission manner the current business bearing mode is switched to described particular service; Described particular service testing result comprises: by interconnection protocol synchronous head between system and frame head information are detected, whether discern is particular service, when the tandem office of core net was evolved into the ip voice form, the method for described identification particular service comprised: interconnection protocol synchronous head and frame head information between real-time detecting system; Judge whether to reach the thresholding of judgement particular service,, then determine to have detected particular service if reach.
The embodiment of the invention provides a kind of particular service treatment system, comprising: base station controller, and
A plurality of media gateway, and adopt time-division multiplexing bearing mode transport service between the described base station controller; Adopt IP bearing mode transport service between described a plurality of media gateway, it is used for after identifying particular service, current bearing mode is switched to described particular service can transmission manner, when the tandem office of core net was evolved into the ip voice form, the method for identification particular service comprised: interconnection protocol synchronous head and frame head information between real-time detecting system; Judge whether to reach the thresholding of judgement particular service,, then determine to have detected particular service if reach.
The embodiment of the invention provides a kind of particular service treatment system, comprising: base station controller, and
A plurality of media gateway, and adopt time-division multiplexing bearing mode transport service between the described base station controller; Adopt IP bearing mode transport service between described a plurality of media gateway, be used for after identifying particular service, reporting Media Gateway Controller; When the tandem office of core net was evolved into the ip voice form, the method for identification particular service comprised: interconnection protocol synchronous head and frame head information between real-time detecting system; Judge whether to reach the thresholding of judgement particular service,, then determine to have detected particular service if reach; And
At least one Media Gateway Controller is used to receive the particular service message of described medium gateway to report, and indicate described media gateway that current bearing mode is switched to described particular service can transmission manner.
The embodiment of the invention provides a kind of media gateway, comprising:
Particular service detection module two is used for discerning particular service by detecting bearer types, and it is adaptive to judge whether to have carried out between system interconnection protocol; When the tandem office of core net was evolved into the ip voice form, the method for identification particular service comprised: interconnection protocol synchronous head and frame head information between real-time detecting system; Judge whether to reach the thresholding of judgement particular service,, then determine to have detected particular service if reach;
Particular service processing module two, be used to receive the testing result of described particular service detection module two, determine to detect particular service do not carry out between system interconnection protocol adaptive after, control encapsulates the transmission of adaptive back with interconnection protocol between described particular service employing system is adaptive; Perhaps determine to detect particular service carried out between system interconnection protocol adaptive after, current bearing mode is switched to described particular service can transmission manner.
The embodiment of the invention provides a kind of media gateway, comprising:
Particular service detection module two is used for discerning particular service by detecting bearer types, and it is adaptive to judge whether to have carried out between system interconnection protocol; When the tandem office of core net was evolved into the ip voice form, the method for identification particular service comprised: interconnection protocol synchronous head and frame head information between real-time detecting system; Judge whether to reach the thresholding of judgement particular service,, then determine to have detected particular service if reach;
The particular service reporting module, the user reports Media Gateway Controller with the testing result of described particular service detection module one;
Particular service processing module two, be used to receive the testing result of described particular service detection module two, determine to detect particular service do not carry out between system interconnection protocol adaptive after, control encapsulates the transmission of adaptive back with interconnection protocol between described particular service employing system is adaptive; Perhaps determine to detect particular service carried out between system interconnection protocol adaptive after, current bearing mode is switched to described particular service can transmission manner.
The technical scheme that is provided by the invention described above embodiment as can be seen, the embodiment of the invention is by detecting the particular service sign or detecting predefined PT value in the IP side in the TDM side, realization is to the identification of described particular service, can transmission manner thereby current bearing mode is switched to described particular service, solve current core net and carried out to realize after IP transforms the problem of particular service, and do not need to increase new control and signaling interface, scheme is easy, is easy to realize.
Description of drawings
Fig. 1 is a prior art cdma network Organization Chart;
Fig. 2 carries out T office for core net in the prior art cdma network and transforms the back schematic diagram;
Fig. 3 is a prior art cdma network A mouth IPization back schematic diagram one;
Fig. 4 is a prior art cdma network A mouth IPization back schematic diagram two;
Fig. 5 is the embodiment of the invention four system architecture schematic diagrames;
Fig. 6 is the embodiment of the invention five system configuration schematic diagrames;
Fig. 7 is the embodiment of the invention six system configuration schematic diagrames.
Embodiment
On the path of core net, except that MGW, also there is miscellaneous equipment, for example language strengthens equipment EC, in embodiments of the present invention these equipment is referred to as IPE equipment, and IPE equipment adopts TDM to insert usually.
The embodiment of the invention detects the particular service sign by MGW or IPE in TDM side (receiving the code stream that transmits in the TDM mode), perhaps detect predefined PT (bearer types) value in IP side (receiving the code stream that transmits in the IP mode), finish the identification of particular service, current bearing mode is switched to described particular service can transmission manner, the direct transparent transmission mode of clearmode mode or Bypass mode or encode/decode-free for example, solve with this and to carry out T office in core net and transform, perhaps after the transformation of A mouth IPization, the problem that some particular service can't successful execution.
Described clearmode mode is about to the TDM code stream and handles in non-packed byte mode, and the packing of dividing into groups transmits;
Described Bypass mode, i.e. bypass mode refers to that EC equipment in speech channel or language enhancing equipment etc. do not process the TDM code stream, and input signal is directly sent to output, is called direct-passing mode again.
Can realize transmission by above-mentioned three kinds of modes (clearmode mode or Bypass mode), avoid core net to carry out T office and transform that perhaps the compression coding and decoding that traditional IP adopts after the transformation of A mouth IPization can't transmit the problem of described particular service to the TDM code stream.
Carry out T office with the specific embodiment explanation in core net below and transform, perhaps the scheme of after the transformation of A mouth IPization particular service being handled (processing procedure with MGW is that example describes).
Embodiment one: suppose that core-network side carried out the VOIP of T office and transformed (referring to Fig. 2), this transformation is invisible to BSC, and the processing of BSC side is constant.
After MGW sets up the audio call passage, start ISLP synchronous head and frame head information simultaneously and detect, for the continuous 0X7e that guarantees professional correctness, can set to detect the regulation number as the judgement benchmark, after for example being consecutively detected 6 above 0x7e, can adjudicating and detect particular service.After detecting described particular service, MGW can adopt following dual mode to finish the bearing mode switching, thereby realizes the processing to particular service:
Mode one: MGW adopts the mode that automaticallyes switch: the bearing mode of encoding and decoding speech is switched to the clearmode mode, the opposite end gateway is behind the message that receives the Clearmode mode, also automatically switch to the clearmode mode, thereby finish the foundation of the described particular service passage of transmission, guarantee the described particular service transmission success of on TDM, carrying.This mode can rely on the fixed configurations on the MGW to finish, and perhaps MGC issues parameter request MGW and finishes automatically;
Switching mode under mode two: the MGC control: MGW reports MGC with professional testing result, after detecting described particular service, carrying out bearing mode by MGC control MGW switches, the bearing mode of encoding and decoding speech is switched to the clearmode mode, simultaneously also notify the opposite end gateway to finish corresponding change action, thereby finish the foundation of clearmode passage, guarantee the described particular service transmission success of on TDM, carrying.
Present embodiment is by detecting ISLP synchronous head and frame head information in real time in the TDM side, thereby particular service is discerned, after identifying particular service, automatically switch to the mode that to transmit described particular service or realize described switching by MGW by MGC control, solve the T office improved core net of VOIP and can't handle the particular service problem, and its method that detects described particular service accurately, in time, does not need to increase new control and signaling interface, and its handover scheme is easy, be easy to realize.
Embodiment two: suppose that core-network side carried out A mouth IP and transformed, adopt the IP mode to connect (referring to Fig. 3) between the described MGW;
After MGW sets up voice channel, if portable terminal is initiated particular service and is handled indication, after BSC receives described particular service indication, the bearer types of current speech passage is switched to the bearer types of particular service, BSC can transmit according to predefined mode, it is adaptive to carry out ISLP to described particular service, also can not carry out ISLP adaptive (if during the non-TrFO of follow-up MGW, realizing that by MGW ISLP's is adaptive).If it is adaptive to carry out ISLP on the BSC, be about to voice flow and switch to the ISLP mode, described particular service information is transmitted by the ISLP mode, owing on IP, transmit, so need to adopt packing manner, therefore the adapted data message can be transmitted according to the clearmode mode, and be designated as particular service bearer types 1, i.e. PT1; If it is adaptive not carry out ISLP, then adopt particular service bearer types 2, promptly adopt the PT2 mode to transmit, concrete mode is as follows:
Mode one: it is adaptive that the BSC side is carried out ISLP:
After MGW sets up voice channel, portable terminal is initiated particular service, the BSC side directly adopts predefined PT to encapsulate the particular service message, and this PT is designated as particular service PT1, and MGW detects the message PT type of IP side, after MGW detects the message of this PT1 type, because MGW has been TrFO, promptly described MGW both sides are with a kind of bearing mode, and present embodiment is the IP bearing mode, the described particular service of the direct transparent transmission of then described MGW does not carry out encoding and decoding.
Mode two: BSC does not adopt ISLP adaptive the particular service message:
After MGW sets up voice channel, portable terminal is initiated particular service, the BSC side directly adopts predefined PT to encapsulate the particular service message, this PT is designated as particular service PT2, MGW detects the message PT type of IP side, after MGW detects the message of this PT2 type, if MGW has been TrFO, then direct transparent transmission does not carry out encoding and decoding.
After present embodiment has realized that A mouth IP transforms, BSC encapsulates according to predefined bearer types and transmits described particular service, MGW detects the bearer types of IP side, because MGW has been TrFO under the scene of present embodiment, so directly the described particular service of transparent transmission has been realized the processing to described particular service.
Embodiment three: suppose that under the situation of A mouth IP transformation, the interface between MGW and MGW adopts TDM mode, the perhaps mode of non-TrFO (referring to Fig. 4);
The processing procedure of BSC can be identical with embodiment two, repeats no more herein.
After MGW set up voice channel, MGW detected the message PT type of IP side, and when detecting particular service, it is adaptive to judge whether described particular service has carried out ISLP, can adopt following dual mode to handle according to different judged results:
Mode one, do not carry out ISLP adaptive (being that described BSC adopts PT2 to transmit) when the PT indication particular service that detects the BSC side, if MGW controls switching automatically, then MGW with this particular service message adopt ISLP encapsulate adaptive after, on TDM, transmit.If MGC control is switched, then by MGW notice MGC, MGC issues and switches indication, and MGW finishes the adaptive conversion of special message to ISLP according to described switching indication.
Mode two, carried out ISLP adaptive (being that described BSC adopts PT1 to transmit) when the PT indication particular service that detects the BSC side, if MGW controls switching automatically, after then MGW directly adopts the Clearmode mode to handle this particular service message, on TDM, transmit.If MGC control is then notified MGC by MGW, MGC issues and switches indication, and MGW transmits on TDM after adopting the clearmode mode to handle according to described switching indication.
Present embodiment by detecting the PT type, carries out corresponding conversion process according to the difference of described PT type in core-network side, has realized that the A mouth carries out IP and transforms and adopt at the interface between MGW and the MGW under the situation of TDM mode processing to particular service.
The various embodiments described above are that example describes with detection and the processing procedure of MGW all, after the IPE of core-network side equipment is detecting particular service, current bearing mode can be switched to the Bypass mode, transmit described particular service.Described IPE equipment can detect described particular service by detecting ISLP synchronous head and frame head information, adopts the mode that automaticallyes switch to switch to the Bypass mode after detecting described particular service.
The embodiment of the invention four provides a kind of particular service treatment system, and as shown in Figure 5, described system comprises: BSC and a plurality of MGW, adopt TDM bearing mode transport service between described a plurality of MGW and the described BSC; Can adopt IP bearing mode transport service between the described MGW, it is provided with:
Particular service detection module one, be used to detect particular service, can be by ISLP synchronous head and frame head information be detected, setting detects the continuous 0X7e of regulation number as the judgement benchmark, behind the 0x7e that is consecutively detected more than the described regulation number, then can determine to have detected particular service;
Particular service processing module one is used to receive the testing result of described particular service detection module one, and after determining to detect particular service, control switches to described particular service with current bearing mode can transmission manner.
Can also be provided with on the described MGW:
The particular service reporting module is used for the testing result of described particular service detection module is reported MGC;
Described system can also comprise: at least one MGC, be provided with on the described MGW under the described particular service reporting module situation, and can be provided with on the described MGC:
Switch indicating module, be used to receive the testing result that described particular service reporting module reports, issue after determining to detect particular service and switch indication to described particular service processing module one, indicating described MGW that current bearing mode is switched to described particular service can transmission manner.
The embodiment of the invention five provides a kind of particular service treatment system, and as shown in Figure 6, described system comprises:
BSC, it is provided with:
Particular service indication receiver module is used to receive the particular service indication;
A mouth IPization particular service processing module, be used under A mouth IPization situation, after described particular service indication receiver module receives the particular service indication, encapsulate according to predefined bearer types, indicate whether to have carried out the described particular service of interconnection protocol adapted transmission between system;
Described system also comprises: a plurality of MGW, and adopt IP bearing mode transport service between the described BSC, and can adopt IP bearing mode transport service between described a plurality of MGW, behind the particular service that detects described BSC transmission, carry out transparent transmission.
The embodiment of the invention six provides a kind of particular service treatment system, and as shown in Figure 7, described system comprises:
BSC, it is provided with:
Particular service indication receiver module is used to receive the particular service indication;
A mouth IPization particular service processing module, be used under A mouth IPization situation, after described particular service indication receiver module receives the particular service indication, encapsulate according to predefined bearer types, indicate whether to have carried out the described particular service of interconnection protocol adapted transmission between system;
Described system also comprises: a plurality of MGW, and adopt IP bearing mode transport service between the described BSC, and can adopt TDM bearing mode or non-IP transport service between described a plurality of MGW, it is provided with:
Particular service detection module two is used to detect described particular service, can judge whether to be particular service by detecting described BSC bearer types, and described particular service whether to have carried out ISLP adaptive;
Particular service processing module two is used to receive the testing result of described particular service detection module two, determine to detect particular service do not carry out ISLP adaptive after, control adopts ISLP to encapsulate the transmission of adaptive back described particular service; Perhaps determine to detect particular service carried out ISLP adaptive after, current bearing mode is switched to described particular service can transmission manner.
Can also be provided with on the described MGW:
The particular service reporting module, the user reports MGC with the testing result of described particular service detection module;
Described system can also comprise at least one MGC, can be provided with on the described MGC:
Switch indicating module, be used to receive the testing result that described particular service reporting module reports, after determining to detect particular service, issue and switch indication, indicate described MGW to carry out the processing of particular service to described particular service processing module two.
Each embodiment of the invention described above is not only applicable to the application of cdma network, and other networks can adopt described scheme after transforming through IP.
In sum, the embodiment of the invention in the synchronous head information of TDM side detection ISLP, detects particular service PT type in the IP side by detecting media stream formats in the band, is finished the switching of bearer types by core-network side equipment.Making need be at BSC and the newly-increased carrier signaling indication of core-network side bearer types, and after having solved the existing network core net and transforming, BSC can't upgrade or support the problem that the carrier signaling agreement is incomplete, the problem that causes some particular service to realize.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and 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 protection range of claim.
Claims (15)
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| CN101582879B (en)* | 2008-05-14 | 2012-12-26 | 电信科学技术研究院 | Method, system and equipment for transmitting parameters |
| CN101309263B (en)* | 2008-06-02 | 2011-03-30 | 华为技术有限公司 | Method, device and system for data transmission |
| CN101765148A (en)* | 2008-12-24 | 2010-06-30 | 华为技术有限公司 | Data transmission method, equipment and system |
| CN101873559B (en)* | 2010-05-31 | 2013-05-08 | 东方通信股份有限公司 | Method for realizing signaling interaction between base station and control center in digital clustering system |
| CN102300334B (en)* | 2011-03-30 | 2014-12-10 | 东方通信股份有限公司 | Method for accessing terminals of different standards in digital trunking communication system |
| CN104994054A (en)* | 2015-03-19 | 2015-10-21 | 数据通信科学技术研究所 | Method of transmitting grouped data based on TD-SCDMA transparent transmission voice channel, and mobile terminal |
| CN106790300A (en)* | 2017-03-21 | 2017-05-31 | 青岛海信宽带多媒体技术有限公司 | A kind of method and apparatus conversed |
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| CN1543751A (en)* | 2000-12-04 | 2004-11-03 | ���˹���Ѷ��� | Method and device for controlling switching between different wireless systems |
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