CN100403722C

CN100403722C - Complementary communication method and system for complementing business between different communication networks

Info

Publication number: CN100403722C
Application number: CNB021264023A
Authority: CN
Inventors: 金亨择
Original assignee: LG Nortel Co Ltd
Current assignee: Novera Optics Korea Co Ltd
Priority date: 2001-07-20
Filing date: 2002-07-18
Publication date: 2008-07-16
Anticipated expiration: 2022-07-18
Also published as: CN1399454A; JP2003152871A; KR100391553B1; KR20030008861A; JP3840534B2

Abstract

The invention discloses an interlocking device and method for a supplementary service between different kinds of communication networks. Upon request of the supplementary service based on an opposite network, the interlocking device interconnects the supplementary service apparatus providing the supplementary service based on the opposite network and a line, converts a guide message sent from the supplementary service apparatus into an audio coding system of its own network and transmits the resulting message to a subscriber, converts digit information to control the supplementary service sent from the subscriber receiving the guide message and transmits the converted information in a form of traffic message recognizable by the supplementary service apparatus.Thus providing supplementary service between different kinds of communication networks.

Description

The interoperability methods of supplementary service and system between the heterogeneous communication network

Invention field

The present invention relates to the internetwork intercommunication of heterogeneous communication, particularly the interoperability methods of supplementary service and system between the heterogeneous communication network.

Background technology

Fig. 1 is the example based on the mobile communication network structure of Time Division Multiplexing of prior art.

As shown in Figure 1, comprise based on the mobile communications network of TDM: portable terminal 10, for the mobile subscriber provide the 2nd generation or 2.5 generation mobile service; Base station sub-system (BSS) 20 is carried out the wave point with portable terminal 10; Base station controller (BSC) 30 is controlled base station sub-system 20; Mobile switching centre (MSC) 40 handles the mobile calls from base station controller 30; Supplementary service device (SSA) 50 is connected with mobile switching centre (MSC) 40 by the TDM method, and supplementary service is provided.

40 of base station controller 30 and MSC are connected by the circuit based on TDM and carry out physical connection, and each network element that constitutes the TDM mobile communications network all is interconnected on the basis of TDM.

The supplementary service method of the aforesaid mobile communications network of explained later.

When the mobile subscriber wished to receive as a supplement one of professional automatic response service (ARS), the mobile subscriber should call attempt ARS.After the connection of carrying out for ARS was set up, the mobile subscriber should be by the automatic response service request of portable terminal 10 inputs.

Then, portable terminal 10 produces and the corresponding signal message of importing (digital information) of request.

The signal message that produces is converted into the Dual Tone Multifrequency signal, and sends to supplementary service device 50 by the circuit connection based on TDM, thereby supplementary service device 50 provides corresponding supplementary service to the mobile subscriber according to the dtmf signal that receives.

When portable terminal 10 call attempt ARS, the ARS call attempt sends with the 7th signal message type, through BSC 30, connects by the circuit based on TDM, up to MSC 40.

As shown in Figure 2, MSC 40 usefulness the 7th signal method carries out the Signal Matching with supplementary service device 50, and the Speech Communication path of ARS is provided with foundation.

Fig. 3 is the flow chart of the method for transmitting DTMF signals in based on the mobile communications network of TDM.

After being used to the Speech Communication path foundation of ARS is provided, when the mobile subscriber listens to the corresponding circular broadcasting of being sent by supplementary service device 50, for switching signal information, the mobile subscriber selects the dialing information of wishing by the relative keys of pressing portable terminal 10 under call state, Here it is is the thing (step S11) of ARS to 50 requests of supplementary service device.

Portable terminal 10 sends the digital information (step S12) corresponding with selected dialing information by the signaling channel between radio zone to base station 20 and BSC 30.

The signal message that BSC 30 receives by signaling channel sends to the supplementary service device 50 of correspondence with the form of the 7th signal message by MSC 40.

In this respect, whether comprise function or MSC 40 that signal message is converted to dtmf signal according to BSC 30 and whether comprise the function that signal message is converted to dtmf signal, it is different to the method for supplementary service device 50 to send signal message.

The present invention has considered that MSC 40 (or core network (CN)) comprises the situation of DTMF translation function.

When receiving the 7th signal message type signal information, BSC 30 connects the 7th signal message that receives by the circuit based on TDM and sends to MSC 40 (step S13).

MSC 40 analyzes the signal message of the terminal 10 that receives with the 7th signal message type, and is connected (step S14) with circuit that corresponding supplementary service device 50 is set up based on TDM.

At this moment, it is the circuit connection of Traffic Channel that the circuit based on TDM of 50 generations of MSC 40 and supplementary service device is connected, and is that the audio coding form of Traffic Channel adopts the pulse code modulation (pcm) method.

Correspondingly, MSC 40 converts the signal message that receives from the mobile subscriber to dtmf signal (step S15), and uses the PCM method, connects by the circuit based on TDM dtmf signal is sent to supplementary service device 50 (step S16).

Supplementary service device 50 is analyzed the dtmf signal that receives with the PCM method, analyzes the signal message of portable terminal 10 requests, and mobile subscriber's desired supplemental business (step S17) is provided.

As previously mentioned, in mobile communications network based on TDM, for the thing according to mobile subscriber's request provides supplementary service, under the state that has connected the calling of carrying out for supplementary service, between portable terminal and MSC, send the signal message that is used to control supplementary service, and the type of service with pcm audio coded format (65kbps bandwidth) sends the signal message that is used to control supplementary service between MSC and supplementary service device with the signal message type.

Correspondingly, in the mobile communications network based on TDM, the digital information of portable terminal is converted into dtmf signal, and dtmf signal connects transmission by the circuit based on TDM of supplementary service device.

Simultaneously, be configured to communication network at mobile communications network based on ATM, rather than under the situation about connecting based on the PCM of TDM, in order to transmit signal from the mobile subscriber, need circuit connecting method (interconnecting method), circuit connecting method be suitable for the MSC that is connected with the dtmf signal converting unit with supplementary service device that mobile communications network based on ATM is connected between atm network.

In the mobile communication system based on TDM, the MSC that is connected with the dtmf signal converting unit is defined by the adaptive multi-rate (AMR) that 3GPP (third generation collaborative project) recommends with audio coding form during business between the supplementary service device is connected.

Yet, because the problem that dtmf signal can not accurately transmit with AMR audio coding form (recommending I.366.2ANNEX K with reference to portion of international telecommunication union telecommunication (ITU-T)) has appearred in the low speed bandwidth (4.75-12.2Kbps) of AMR audio coding form.

Therefore, need a kind of in based on the mobile communications network of ATM the signal message transmission method of transmitting DTMF signals.

In addition, in order between different communication networks, to provide supplementary service, need between heterogeneous network, provide the signal message interface method of supplementary service.

That is to say, can receive supplementary service by the supplementary service device that is connected with mobile communications network in order to make based on ATM based on the mobile subscriber in the mobile communications network of TDM, and allow to receive supplementary service by the supplementary service device that is connected with mobile communications network a kind of signal message interface method that supplementary service is provided between based on the mobile communications network of DTM and the mobile communications network based on ATM of needs based on DTM based on the mobile subscriber in the mobile communications network of ATM.

This in conjunction with above-mentioned reference to illustrate additional or optionally details, feature and/or technical background.

Summary of the invention

Therefore, an object of the present invention is, wherein have the MSC and the intercommunication of supplementary service device of function switching signal, thereby between the heterogeneous communication network, provide supplementary service to the internetwork supplementary service of heterogeneous communication provides a kind of interoperability methods and system.

Another object of the present invention is to provide a kind of interoperability methods and system for the internetwork supplementary service of heterogeneous communication, wherein, when heterogeneous network request supplementary service, circular message is converted into the corresponding audio coded format, and send to the request supplementary service portable terminal, the request signal of portable terminal is converted into the corresponding service coded format, and is sent to corresponding supplementary service device, thereby the supplementary service relevant with speech is provided between the heterogeneous communication network.

Whether in order all to realize above-mentioned purpose at least, may further comprise the steps for the internetwork supplementary service of heterogeneous communication provides a kind of interoperability methods with part: checking has supplementary service (A); Voice send and conversion (B) according to the request of supplementary service is carried out; By the supplementary service device of supplementary service is provided, carry out supplementary service (C) according to voice from switch.Wherein, step B comprises: under the situation of having asked based on the supplementary service of heterogeneous network, in order to carry out voice conversion (B1) with the switch intercommunication that has been requested supplementary service and under the situation of having asked, in order to carry out speech information transmission (B2) with the switch intercommunication that has been requested supplementary service based on the supplementary service of homogeneous network.And wherein, step B1 comprises: be connected being requested to carry out voice call between professional switch and supplementary service device; Connect the reception first circular message by voice call; The first circular message conversion is become to be requested the message format of professional switch; Message after the switch of requested service sends conversion; Receive first digital information that is used to control supplementary service from being requested professional terminal; And change first digital information, and first digital information after changing is sent to the supplementary service device by the voice call connection.Step B2 comprises: virtual circuit is connected to the supplementary service device and receives the second circular message; The second circular message is sent to and has been requested professional terminal; Receive second digital information that is used to control supplementary service from being requested professional terminal; And second digital information changed, and second digital information after the conversion is sent to the supplementary service device.

In order all to realize these advantages at least with part, also provide a kind of interoperability methods for the internetwork supplementary service of heterogeneous communication, may further comprise the steps:, between terminal and the supplementary service device that supplementary service is provided of request supplementary service, carry out voice call and be connected according to the network type of supplementary service request side; If the circular message of the audio coding form that the supplementary service device adopts is from the supplementary service device, the audio coding form that becomes the circular message conversion terminal to adopt then, and it is sent to terminal; According to circular message, the digital information of being used to of receiving from terminal being controlled supplementary service converts dtmf signal to, and the service message form that can discern dtmf signal with the supplementary service device sends to the supplementary service device; Receive the supplementary service that the supplementary service device of dtmf signal provides terminal to ask according to dtmf signal.

In order all to realize these advantages at least, also, comprising: the supplementary service device that supplementary service is provided for the internetwork supplementary service of heterogeneous communication provides a kind of intercommunicating system with part; Mobile communication switch, according to the network type of supplementary service request side optionally with mobile communications network and the intercommunication of supplementary service device, mobile communication switch wherein comprises: the AAL2 interface unit, the digital information of portable terminal being used to of sending being controlled supplementary service converts dtmf signal to, and generate dtmf signal as AAL2 signal message ATM interchanger, the message that the AAL2 interface unit sends is carried out the ATM exchange; The speech coding unit becomes the audio coding form that uses in the communication network based on TDM to the message coding that exchanges in the ATM interchanger, distinguishes voice signal and from the dtmf signal message based on the communication network of TDM, and realizes the AAL2 interface; DTMF transmission/receiving element sends and receives dtmf signal; The time interchanger exchanges the message that sends between speech coding unit and DTMF transmission/receiving element and receive; The message that exchanges in the time interchanger and interface based on the circuit of TDM are realized in the trunk interface unit; And controller, each element in the control mobile communication switch.

Some will set forth other advantage of the present invention, purpose and feature in the following description book, and some then passes through becoming clear after the check of following content for those skilled in the art, perhaps experiences by practice of the present invention.By realizing of specifically noting of appending claims and reach objects and advantages of the present invention.

Description of drawings

Describe the present invention below in conjunction with accompanying drawing, wherein similar label refers to similar element.In the accompanying drawing:

Fig. 1 shows is the structure of mobile communication network based on TDM according to prior art;

What Fig. 2 showed is in the mobile communications network based on TDM according to prior art, the protocol stack structure of signaling interface between MSC and supplementary service device;

Fig. 3 shows is in the mobile communications network based on TDM according to prior art, the flow chart of dtmf signal transmission method;

What Fig. 4 showed is according to a preferred embodiment of the present invention, and the structure of the intercommunicating system of supplementary service is provided between the heterogeneous communication network;

What Fig. 5 showed is according to another preferred embodiment of the present invention, and the flow chart of the interoperability methods of supplementary service is provided between the heterogeneous communication network;

Fig. 6 shows is to provide flow chart based on the method for the supplementary service of ATM communication network to the 3G portable terminal;

Fig. 7 shows is to comprise the MSC of dtmf signal translation function and based on the signaling interface protocol stack between the supplementary service device in the communication network of ATM;

What Fig. 8 showed is in comprising the mobile communications network based on ATM of supplementary service device, the voice service protocol stack of the interface between each network element;

What Fig. 9 showed is the business interface protocol stack based on transmitting DTMF signals between supplementary service device in the mobile communications network of ATM and MSC that comprises the supplementary service device;

Figure 10 shows is to provide flow chart based on the supplementary service of TDM communication network to the 3G portable terminal;

Figure 11 shows is MSC and belongs to based on the mobile communications network of ATM with based on the voice service protocol stack of the interface between the supplementary service device of the communication network of TDM;

Fixed terminal in the communication network that is based on TDM that Figure 12 shows, MSC and based on the signal service protocol stack of the interface of the control supplementary service between the supplementary service device in the mobile communications network of ATM;

Figure 13 shows is to provide flow chart based on the method for the supplementary service of ATM communication network to the 2G terminal;

The communication network that is based on ATM that Figure 14 shows and belonging to based on the voice service protocol stack of the interface between the supplementary service device (ISP) of the communication network of TDM;

Figure 15 shows is to belong to based on the 3G portable terminal of ATM mobile communications network and belong to the signal service protocol stack of the interface that is used to control supplementary service between supplementary service device based on the communication network of TDM.

Preferred embodiment describes in detail

Fig. 4 shows is in accordance with a preferred embodiment of the present invention the structure that the intercommunicating system of supplementary service is provided between the heterogeneous communication network.

As shown in Figure 4, the intercommunicating system of supplementary service comprises between the heterogeneous communication network: first and second terminals of request supplementary service between the heterogeneous communication network; First and second communication networks of intercommunication provide supplementary service based on first and second communication networks according to the request of first and second terminals.

First communication network comprises the third generation (3G) mobile communications network, and the second communication network comprises 2G or 2.5G communication network.

Such as, be based on the mobile communications network of ATM at the 3G mobile communications network, 2G or 2.5G communication network are to be used under the situation based on the communication network of TDM of 2G or 2.5G mobile communication business and Integrated Service Digital Network business, first terminal can be that 3G portable terminal (MT) 100, the second terminals can be 2G (or 2.5G) portable terminal or fixed terminal (FT) 800.

Mobile communications network based on ATM comprises: Node B 200, carry out wave point with 3G MT 100; Radio access network controller (RNC) 300, Control Node B 200; Mobile switching centre (MSC) 400 is connected with RNC 300 ATM, according to the supplementary service type of 3G MT 100 request and supplementary service device 500 or based on the communication network intercommunication of TDM; Supplementary service device (SSA) 500 is connected with MSC 400 by the ATM method, and supplementary service is provided.

Node B 200 and RNC 300 are included in the Radio Access Network (RAN), and MSC 400 is included in the core network.

MSC 400 connects corresponding supplementary service device and circuit according to the supplementary service type of request, send the circular message that receives from corresponding supplementary service device with corresponding audio coding form according to the destination, carry out the dtmf signal of business interface with transmission 3G portable terminal, the industry of going forward side by side affair interface is with the dtmf signal of transmission based on the fixed terminal in the communication network of TDM (or 2G portable terminal) 800.

MSC 400 comprises: AAL2 interface unit 410, the digital information of the control supplementary service that 3G portable terminal 100 is sent converts dtmf signal to, and carries out and based on AAL2 (atm adaptation layer 2) interface of the mobile communications network key element (RNC 300 or supplementary service device 500 etc.) of ATM; ATM transducer 420 is to carrying out the ATM conversion from the message of AAL2 interface unit 410; Speech coding unit 430, the audio coding form that the message coding of ATM transducer 420 conversion becomes the communication network 600 based on TDM to use, identification from based on the voice signal in the message of the communication network 600 of TDM and dtmf signal to carry out the AAL2 interface operation; Circular unit/callings blender (ANM/CMS) 450 provides the circular output function of MSC400 oneself, and call function DTMF transmission/receiving element 460 multi-point the time, transmission and reception .DTMF signal; Time crosspoint 440 carries out the time exchange to speech coding unit 430, circular unit/calling blender (ANM/CMS) 450 and 460 message that send and receive of DTMF transmission/receiving element; Interface is realized for the message of time crosspoint 440 exchanges with based on the circuit of TDM in trunk interface unit 470; And controller 415,425,435 and 445 is used to control the element of MSC 400.

Speech coding unit 430 comprises: speed adaption unit 433, for time crosspoint 440 and transmission of messages speed provide interface; Vocoder 432, control voice service interface and dtmf signal business interface become pcm audio coding circular information to the AMR audio coding circular message conversion of ATM transducer 420 conversions; And AAL2 interface unit 431, under the control of vocoder 432, voice signal is converted to the AAL2 service message, and dtmf signal is converted to the AAL2 signal message.

Supplementary service device 500 comprises: physical layer function unit (ATM) 510 and 550, as with the ATM physical interface of MSC 400;

AAL2 interface unit

520 and 560, as with the AAL2 interface of MSC 400; Vocoder 530 is connected with AAL2 520, carries out the AMR audio coding/decoding; Circular unit 540 is connected with vocoder 530, carries out the circular of speech supplementary service; And DTMF transmission and receiving element 570, be connected with AAL2 560, for the supplementary service of control speech sends and receive dtmf signal.

Communication network based on TDM comprises: Internet service provider (ISP) 700 provides the supplementary service based on the TDM communication network; ISDN/2G PLMN (integrated services digital network/second generation Public Land Mobile Nerwork) 600 switches (among Fig. 4 not show), it is according to the type selecting ground of the supplementary service of request and mobile communications network and ISP700 intercommunication based on ATM.

According to purpose of the present invention, be described in the embodiment that supplementary service is provided between the heterogeneous communication network below.

When having asked supplementary service, the network mobile switching centre that receives request checks that whether it is supplementary service request from homogeneous network.

If from the supplementary service request of homogeneous network, mobile switching centre sends to the user to the speech information that receives from the supplementary service device.

Yet, if not the supplementary service request of coming homogeneous network, mobile switching centre converts the speech information that receives from the supplementary service device to message that the mobile switching centre of the network that has been requested supplementary service can discern, and sends to the network that has been requested supplementary service.

Fig. 5 is according to a further embodiment of the invention, and the flow chart of the interoperability methods of supplementary service is provided between the heterogeneous communication network.

When receiving supplementary service request (step S20), receive the type of the definite supplementary service of being asked of network of request.That is to say that network is determined the supplementary service from the side network of being based on of request, also is based on the supplementary service of opposite side network.

If network is from receiving based on the supplementary service request from the side network based on the terminal from the side network, network just provides based on the supplementary service (step S30 and S40 step) from the side network.

If network is from receiving the supplementary service request based on the offside network based on the terminal from the side network, network just with the offside network interworking, the supplementary service based on the offside network is provided.

Simultaneously, if network receives based on the supplementary service request from the side network from the terminal based on the offside network, network just with the offside network interworking, provide based on supplementary service (step S70 and S80) from the side network.

As one embodiment of the present of invention, be the ATM mobile communications network from the side network, and the offside network is under the situation of TDM network, below describes a kind of method that supplementary service is provided according to intercommunication between heterogeneous network.

When the MSC of ATM mobile communications network receives supplementary service request (step S20), it determines the type of the supplementary service of request.

If the supplementary service of request be 3G MT 100 request based on atm network supplementary service (step S30), MSC 400 just provides supplementary service based on atm network to 3G MT100 (step S40).

If the supplementary service of request is the supplementary service based on the TDM network (step S50) of 3G MT 100 request, then MSC 400 and TDM network interworking, and provide supplementary service based on the TDM network to 3G MT 100 (step S60).

If the supplementary service of request is the supplementary service based on atm network (step S70) of TDM network requests, then MSC 500 and TDM network interworking, and provide based on the supplementary service of the atm network FT/2G MT 800 (step S80) to the TDM network.

At first, the situation of 3G MT 100 requests based on the supplementary service of atm network described.

Fig. 6 be when the MSC 400 of atm network receive from 3G MT 100 based on the supplementary service request of ATM communication network the time, the flow chart of the method for supplementary service is provided.

When 3G MT 100 from based on the network requests voice mail business (a kind of supplementary service) of ATM the time based on atm network, MSC 400 analyzes the signal message that receives from 3G portable terminal 100, and with the supplementary service device (such as, based on the voice mail in the mobile communications network of ATM (VMS) 500) call out connection (step S41).

That is to say, as shown in Figure 7,, set up virtual circuit at MSC 400 with 500 in supplementary service device and be connected by using intercommunication signaling protocol B-ISUP (Broadband ISDN User Part) based on ATM.

In the process of setting up the virtual circuit connection by the B-ISUP signal message, professional in order to send to 3G portable terminal 100 with the AAL2 type of message, in the relevant parameter of MSC 400 and supplementary service device 500 transmission AAL2, particularly handle the signal message that is used for the connection of AAL2 voice call according to Q.263.1 (ITU-T standard).

After the voice call of

MSC

400 and 500 in supplementary service device was connected foundation, supplementary service device 500 sent circular by the communication path that connects.

Fig. 8 shows be comprise the supplementary service device based on the voice service protocol stack of the interface between each network element of mobile communications network of ATM.

As shown in Figure 7, in the communication network based on ATM, at the physical interface that connects on the basis of ATM between network element, and the AMR speech coding form of employing 3GPP standard recommendation is as the audio coding form.

Correspondingly, when the circular unit of supplementary service device 500 540 output circulars, vocoder 530 converts the circular of output to AMR audio coding form (step S34).In AAL2520, AMR audio coding circular message is converted into the AAL2 type of message, and sends to MSC 400 (with reference to figure 4A) by ATM510 (step S42).

By RNC 300 and Node B 200, the AMR audio coding circular message that 400 of MSC receive sends to 3G MT 100 with the form of AAL2 message.The mobile subscriber listens to circular message (step S43) by 3GMT 100.

By this way, by AAL2 exchange but do not change, MSC 400 sends to RAN (RNC 300) to the AAL2 voice service pellucidly from supplementary service device 500.

After receiving circular message, the mobile subscriber selects the supplementary service wished by 3G terminal 100 input corresponding digital information, and 3G portable terminal 100 sends digital information to Node B 200 by wave point.Then, by RNC 300, the signal message that comprises digital information that receives from Node B 200 is sent to MSC 400 (step S44).

Fig. 9 shows be comprise the supplementary service device based on the business interface protocol stack of transmitting DTMF signals between supplementary service device and MSC in the mobile communications network of ATM.

As shown in Figure 9, receive the signal message that comprises digital information after, MSC 400 converts digital information to AAL2 dtmf signal message format, and the AAL2 virtual circuit by former foundation it send to supplementary service device 500 (step S45, S46).

That is to say that when the AAL2 of MSC 400 interface unit 410 received digital information format from RNC 300, AAL2 interface unit 410 received digital information to controller 415 reports.Then, controller 415 orders generate dtmf signal, and order converts dtmf signal to the AAL2 signal message.

Then, corresponding AAL2 interface unit 410 converts digital information to dtmf signal, utilize the service-specific of AAL2 to compile function (SSCF), and the AAL2 signal message is sent to supplementary service device (referring to Fig. 4 B) by the AAL2 virtual circuit that produces among the step S32 by dtmf signal generation AAL2 signal message (step S40).

According to the ITU-T proposed standard I.366.2, discerning arbitrarily by the specific markers of the header of AAL2 message, AAL2 message is service message or signal message.

Correspondingly, in the present invention, when dtmf signal converted AAL2 message to, indicating in header was signal message, and converted AAL2 packet type 3 (AAL2 SSCF message to; The AAL2 signal message) signal message.

Simultaneously, supplementary service device 500 is constantly checked the AAL2 message from MSC 400, when it recognizes the AAL2 signal message (AAL2DTMF signal message) that comprises dtmf signal, the digital information of supplementary service device analysis mobile subscriber input, and the supplementary service (step S47) of actual request is provided to the mobile subscriber according to the digital information of analyzing.

When the 3G mobile subscriber to based on the supplementary service device request supplementary service in the mobile radio communication of ATM the time, by using B-ISUP between based on MSC in the communication network of ATM and supplementary service device, to set up virtual circuit, and send AMR audio coding circular message to the 3G mobile subscriber by the virtual circuit of the AAL2 that connects.Then, digital information from 3G mobile subscriber's control supplementary service device is converted into the AAL2DTMF signal message, and send to the supplementary service device, thereby the corresponding supplementary service that can provide the 3G mobile subscriber to wish based on the mobile communications network of ATM by the AAL2 virtual circuit.

The situation of 3G MT 100 requests based on the supplementary service of TDM communication network is described below.

Figure 10 shows is that MSC 400 in the ATM mobile communications network receives under the situation based on the supplementary service request of TDM network from 3G MT 100, and the flow chart of the method for supplementary service is provided.

When 3G MT (portable terminal) 100 to based on the supplementary device in the communication network 600 of TDM (such as, when asking supplementary service Internet service provider (ISP) 700), the MSC in the ATM mobile communications network is connected (step S61) by using ISUP to set up voice call with TDM communication network 600.

Then, be connected (step S62) based on the communication network 600 of TDM with the circuit that ISP 700 in the TDM communication network 600 sets up based on TDM.

When based on the 3G portable terminal 100 in the mobile communications network of ATM to based on the supplementary service device in the communication network 600 of TDM (such as, Internet service provider (ISP) 700) request supplementary service the time.

Then, the MSC 400 in the ATM mobile communications network carries out connecting (step S72) based on the voice call of TDM to TDM communication network 600 by using ISUP.

Then, be connected with the circuit that ISP 700 in the TDM communication network 600 sets up based on TDM based on the communication network 600 of TDM.

The mobile communications network that is based on ATM that Figure 11 shows and based on the voice service protocol stack of the interface between the supplementary service device (ISP) in the communication network of TDM.

As shown in figure 11, ISP 700 circulates a notice of message by the circuit based on TDM that connects to sending the pcm audio coding based on the MSC in the mobile radio communication of ATM 400.

By vocoder unit 430, MSC 400 becomes AMR audio coding circular message to the pcm audio coding circular message conversion that receives by the circuit based on TDM, and by Node B 200 it is sent to 3G portable terminal 100 (step S78) (with reference to figure 4).

After hearing the circular message that 3G portable terminal 100 receives, mobile subscriber's supplementary service number that input is wished according to circular message, and send corresponding digital information (step S65).

3G portable terminal in the communication network that is based on ATM that Figure 12 shows and control the service signal protocol stack of the interface of supplementary service based on being used between the supplementary service device in the communication network of DTM.

As shown in figure 12, when being received with the form of signal message from the digital information of 3G portable terminal 100, the signal message that the AAL2 interface unit 410 among the MSC 400 receives to controller 415 reports.

Then, controller 415 order DTMF transmissions and receiving element 460 convert digital information to dtmf signal by

controller

425 and 445.

Then, DTMF sends and receiving element 460 converts digital information to dtmf signal (step S66), and by time crosspoint 440 and trunk interface unit 470 it is sent to communication network 600 based on TDM.

Thereby dtmf signal is sent to ISP 700 (step S67) (Fig. 4 D) through behind the mobile communications network 600 based on TDM by the circuit based on TDM.

ISP 700 analyzes the dtmf signal that receives, and the business (step S68) based on the request of the user in the mobile communications network of ATM is provided.

When based on the user in the mobile communications network of ATM to based on the supplementary service device request supplementary service in the communication network of TDM the time, be connected with the circuit of setting up based on TDM based on the network of TDM by using ISU based on the MSC in the mobile communications network of ATM, the circuit of setting up based on TDM based on communication network and the supplementary service device of TDM is connected.

The supplementary service device sends circular message by the circuit based on TDM with the pcm audio coded format, based on the MSC in the mobile communications network of ATM the circular message conversion of audio coding form is become the circular message of AMR audio coding form, and it is sent to based on the user in the mobile communications network of ATM.

The supplementary service device converts it to circular message, and it is sent to based on the user in the mobile communications network of ATM, MSC converts the digital information based on the input of the user in the mobile communications network of ATM to dtmf signal, and by the circuit based on TDM dtmf signal is sent to the supplementary service device.

Correspondingly, can receive the supplementary service that the communication network based on TDM provides based on the user in the mobile communications network of ATM.

At last, explained later FT/2G MT 100 request atm networks are the situation of the supplementary service on basis.

What Figure 13 showed is the method that supplementary service is provided by the FT/2GMT 800 of ATM mobile communications network in the TDM network.

FT/2G MT 800 in the TDM communication network, as ISDN/2G PLMN, when professional, the switch of ISDN/2G PLMN 600 connects to ATM mobile communications network call attempt voice call based on the voice mail of ATM in request.

At this moment, for based on the communication network 600 of TDM with based on being connected between the ATM mobile communications network, the PCM that is based on TDM that at present 3GPP recommends connects, and connects (step S81) so carry out voice call by the ISUP signal message of using ITU-T to recommend.

After this, according to from voice call connection request based on the communication network 600 of TDM, be connected with supplementary service device 500 based on the MSC in the mobile communications network of ATM 400, the business that provides the user based on the communication network 600 of TDM to wish, and on the basis of ATM by using the B-ISUP signal message to set up virtual circuit.

At this moment, in based on the communication network of ATM, send, according to the Q.2630.1 signaling procedure professional connection of foundation (step S82) of ITU-T proposed standard with AAL2 message in order to make business.

In addition, select to be fit to AMR voice encryption device (vocoder 530 of supplementary service device 500 and the vocoder 432 of MSC 400) based on the speech coding type of the mobile communications network of ATM.

After the voice call of

MSC

Figure 14 shows is MSC and based on the supplementary service device in the mobile communications network of ATM and based on the voice service protocol stack of the interface between the supplementary service device in the mobile communications network of TDM.

As shown in figure 14, the supplementary service device becomes the circular message of AMR audio coding type to the circular message conversion of PCM type, and by AAL2 520 and ATM 510 it is sent to MSC 400 (step S83).

The speech coding unit 430 of MSC 400 becomes pcm audio coding circular message to AMR audio coding circular message conversion, by time crosspoint 440 and trunk interface unit 470 pcm audio coding circular message is sent to communication network 600 (step S84) based on TDM.

After receiving pcm audio coding circular message from the MSC 400 of ATM mobile communications network, TDM communication network 600 sends to FT/2G MT 800 (Fig. 4 E) to it.

Then, circulate a notice of according to the voice mail business that the supplementary service device 500 that is connected with the ATM mobile communications network sends, the user of TDM communication network 600 sends the digital information that is used to control the hope business for the TDM communication network, and the switch of TDM communication network 600 converts the digital information that receives to dtmf signal.

Figure 15 shows is the FT/2G MT 800, the MSC 400 that are used for controlling TDM communication network 600 and based on the signal service protocol stack of the interface of the supplementary service of 500 in the supplementary service device in the mobile communications network of ATM.

The speed of TDM communication network 600 by the TDM method is the circuit channel of the 64Kbps dtmf signal that sends the PCM type to based on the MSC in the mobile communications network of ATM (step S85).

In communication network based on ATM, because it is the same with voice channel that the PCM information of TDM is considered to, if the dtmf signal that receives by Traffic Channel is unconditionally converted to voice signal, then supplementary service device 500 (distant station) just can not correctly be discerned corresponding D TMF signal.

Therefore, dtmf signal and the voice signal that sends from the communication network 600 based on TDM are differentiated in the speech coding unit 430 among the MSC 400 of the present invention, to send to supplementary service device 500.

That is to say, at the signal that receives from the communication network 600 based on TDM is under the situation of voice signal, the speech coding unit 430 of MSC 400 converts the PCM voice signal to AMR by vocoder 432, and makes it become the AAL2 service message by AAL2 interface unit 431.

If the signal that receives from TDM communication network 600 is a dtmf signal, the numeral of dtmf signal is analyzed in the speech coding unit 430 of MSC 400, SSCF converts dtmf signal to the AAL2 signal message by use, and it is sent to supplementary service device 500 (step S66).AAL2 signal message conversion among the step S66 is carried out according to ITU-T proposed standard 1.366.2.

Simultaneously, sent the AAL2 message of supplementary service device 500 inspections of circular from MSC 400.If recognize the AAL2 signal message that comprises dtmf signal, rather than voice signal, then supplementary service device 500 is analyzed dtmf signal, and the desirable business of user (step S87) (Fig. 4 F) based on the communication network 600 of TDM is provided.

When based on the user of the communication network of TDM to based on the supplementary service device request supplementary service in the mobile communications network of ATM the time, by using ISUP, between MSC and supplementary service device, set up the AAL2 virtual circuit by using B-ISUP and AAL2 at the circuit of setting up based on the communication network of TDM with between based on TDM based on the MSC in the mobile communications network of ATM.

By using the AAL2 virtual circuit, the supplementary service device sends the AMR audio coding and circulates a notice of to MSC, and MSC becomes pcm audio coding circular message to AMR audio coding circular message conversion, and by based on the circuit of TDM it being sent to communication network based on TDM.

When the signal that is used for controlling supplementary service (digital information) is converted into dtmf signal at the communication network based on TDM, and when being sent to MSC by circuit based on TDM, MSC converts dtmf signal to the AAL2 signal message, and it is sent to the supplementary service device, thereby the supplementary service device can be according to from providing corresponding supplementary service based on the dtmf signal of the communication network of TDM for the user based on the communication network of TDM.

As mentioned above, have many good qualities based on the supplementary service method and system in the mobile communications network of ATM.

That is to say, such as, when request supplementary service between the heterogeneous communication network, circular message is converted into the audio coding form that can be discerned by corresponding communication network to send, be converted into the operation code form that to be discerned by corresponding communication network from mobile subscriber's digital information, and be sent to corresponding supplementary service device, thereby between the heterogeneous communication network, provide supplementary service.

In addition, MSC changes mutually to AMR audio coding circular message and pcm audio coding circular message, according to the residing network of supplementary service device dtmf signal with based on the circuit of ATM or based on the circuit interface of TDM.So the supplementary service that provides based on the mobile communications network of TDM can offer the 3G mobile subscriber, the supplementary service that provides based on the mobile communications network of ATM can offer the communication network based on TDM.

Above preferred embodiment and advantage only are exemplary, the present invention are not construed as limiting.Principle of the present invention goes for the equipment of other type.Description of the invention only is illustrative, and it does not limit the scope of the claims.For a person skilled in the art, the present invention can have many replacements, improvement and variation obviously.In claims, the statement that device adds function is intended to contain the structure that realizes described function, and it is not only, and structure is equal to, and also comprises equivalent configurations.

Claims

1. interoperability methods that is used for supplementary service between the heterogeneous communication network may further comprise the steps:

A. check whether supplementary service is arranged;

B. carrying out speech according to the request of supplementary service sends and changes; And

C. by the supplementary service device of supplementary service is provided, carry out supplementary service according to the speech that transmits from switch,

Wherein, step B comprises:

B1. under the situation of having asked, in order to carry out voice conversion with the switch intercommunication that has been requested supplementary service based on the supplementary service of heterogeneous network; With

B2. under the situation of having asked based on the supplementary service of homogeneous network, in order to carry out the speech information transmission with the switch intercommunication that has been requested supplementary service, and

Wherein, step B1 comprises:

Be connected being requested to carry out voice call between professional switch and supplementary service device;

Connect the reception first circular message by voice call;

The first circular message conversion is become to be requested the message format of professional switch;

Message after the switch of requested service sends conversion;

Receive first digital information that is used to control supplementary service from being requested professional terminal; And

Change first digital information, and first digital information after changing sent to the supplementary service device by the voice call connection,

Step B2 comprises:

Virtual circuit is connected to the supplementary service device and receives the second circular message;

The second circular message is sent to and has been requested professional terminal;

Receive second digital information that is used to control supplementary service from being requested professional terminal; And

Second digital information is changed, and second digital information after the conversion is sent to the supplementary service device.

2. method according to claim 1, the first circular message wherein is pcm encoder circular message.

3. method according to claim 1, first digital information wherein is converted into the dtmf signal form.

4. method according to claim 1, the second circular message wherein are AMR coding circular message.

5. method according to claim 1, second digital information wherein is converted into AAL2 dtmf signal form of message.

6. method according to claim 1 comprises:

Based on the 3G portable terminal in the mobile communications network of ATM under situation based on the supplementary service device request supplementary service in the communication network of TDM, be connected based on the voice call of TDM with carrying out based on the MSC in the mobile communications network of ATM by using based on the ISUP between the communication network of TDM;

On the basis of TDM, be connected voice call based between the communication network of TDM and supplementary service device;

When pcm audio coding circular message by based on the circuit of TDM when the supplementary service device sends to MSC, pcm audio coding circular message conversion is become AMR audio coding circular message, and sends to the 3G portable terminal;

When MSC receives when being used to control the digital information of supplementary service from the 3G portable terminal, digital information is converted to dtmf signal, and send to the supplementary service device by circuit based on TDM; And

The dtmf signal that analysis receives by the circuit based on TDM is to provide 3G portable terminal desired supplemental business.

7. method according to claim 1 comprises:

When based on the terminal in the communication network of TDM to based on the supplementary service device request supplementary service in the mobile communications network of ATM the time, based on the communication network of TDM with MSC that mobile communications network based on ATM is connected between carry out connecting based on the circuit of TDM;

By using B-ISUP and AAL2, between MSC and supplementary service device, be connected the AAL2 virtual circuit;

When MSC when the supplementary service device receives AMR audio coding circular message, MSC becomes pcm audio coding circular message to AMR audio coding circular message conversion, and by the communication network based on TDM it is sent to terminal;

With the dtmf signal method,, receive the digital information that is used to control supplementary service from the end that has received circular message by circuit based on TDM;

Utilize the SSCF of AAL2, generate dtmf signal, and send to the supplementary service device from MSC as AAL2 dtmf signal message; And

When detecting the AAL2DTMF signal message, check the AAL2 message that MSC sends, analyze dtmf signal so that terminal desired supplemental business to be provided.

8. method according to claim 1 comprises:

When based on the 3G portable terminal in the mobile communications network of ATM to based on the supplementary service device request supplementary service in the mobile communications network of ATM the time, be connected the AAL2 virtual circuit by using B-ISUP and AAL2 between MSC and supplementary service device;

When the supplementary service device sends AMR audio coding circular message, AMR audio coding circular message is sent to the 3G portable terminal by the AAL2 interface;

When the 3G terminal that receives circular message sends when being used to control the digital information of supplementary service, utilize the SSCF of AAL2 that digital information is converted to the dtmf signal that generates as the AAL2DTMF signal message, send to the supplementary service device then; And

After the AAL2 message that MSC is sent is checked,, then analyze dtmf signal so that 3G portable terminal desired supplemental business to be provided if detect AAL2 dtmf signal message.

9. interoperability methods that is used for the supplementary service of heterogeneous communication network may further comprise the steps:

According to the type of request supplementary service one side, between the terminal of request supplementary service and the supplementary service device that supplementary service is provided, carry out voice call and be connected;

If transmitted the circular message of the audio coding form that the supplementary service device adopted from the supplementary service device, the audio coding form that becomes the circular message conversion terminal to adopt then, and it is sent to terminal;

According to circular message, the digital information of being used to of receiving from terminal being controlled supplementary service converts dtmf signal to, and with the discernible service message form of supplementary service device dtmf signal is sent to the supplementary service device; And

According to dtmf signal, the supplementary service that provides terminal to ask by the supplementary service device that receives dtmf signal.

10. method according to claim 9, terminal wherein can belong to different communication networks with the supplementary service device.

11. an intercommunicating system that is used for the supplementary service of heterogeneous communication network comprises:

The supplementary service device of supplementary service is provided;

Mobile communication switch, according to the network type of supplementary service request side, optionally with mobile communications network and the intercommunication of supplementary service device,

Mobile communication switch wherein comprises:

The AAL2 interface unit, the digital information of portable terminal being used to of sending being controlled supplementary service converts dtmf signal to, and generates dtmf signal as the AAL2 signal message;

The ATM interchanger carries out the ATM exchange to the message that the AAL2 interface unit sends;

The speech coding unit becomes the audio coding form that uses in the communication network based on TDM to the message coding that exchanges in the ATM interchanger, distinguishes voice signal and from the dtmf signal message based on the communication network of TDM, and realizes the AAL2 interface;

DTMF transmission/receiving element sends and receives dtmf signal;

The time interchanger exchanges the message that sends between speech coding unit and DTMF transmission/receiving element and receive;

The message that exchanges in the time interchanger and interface based on the circuit of TDM are realized in the trunk interface unit; And

Controller, each element in the control mobile communication switch.

12. system according to claim 11, speech coding unit wherein comprises:

The rate interface unit, the interface of realization time interchanger and message transmission rate;

Vocoder detects dtmf signal from the signal message of speed interface unit output, control voice service interface and dtmf signal business interface, and the AMR audio coding of exchange circular message conversion becomes pcm audio coding circular message; And

The AAL2 interface converts voice signal to the AAL2 service message under the control of vocoder, dtmf signal is converted to the AAL2 signal message.