CN104994054A - Method of transmitting grouped data based on TD-SCDMA transparent transmission voice channel, and mobile terminal - Google Patents
Method of transmitting grouped data based on TD-SCDMA transparent transmission voice channel, and mobile terminal Download PDFInfo
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Abstract
The invention discloses a method of transmitting grouped data based on a TD-SCDMA transparent transmission voice channel, comprising: using the original data selected by a user as a data source, and performing grouping processing on grouped data according to frames; sending a request of establishing a TrFO (Transcoder Free Operation) transparent transmission channel to a local side MSC (Mobile Switching Center); executing out band negotiation; sending voice frames after success of out band negotiation to establish a TrFO transparent transmission link, and sending processed 12.2 kbps grouped data; transparently transmitting data to an opposite end MGW (Media Gateway) in a core network; sending the grouped data to a called party through an established end-to-end TrFO transparent transmission link; and restoring the original data by a receiving side and displaying a current business state. The method can guarantee the data transmission reliability, instantaneity and security between any two mobile terminals or between a mobile terminal and a server in a TD-SCDMA mobile communication system by employing a software mode and without increasing any hardware cost, thereby meeting user use demands and improving communication efficiency and user experience. The invention also discloses a mobile terminal.
Description
Technical field
The present invention relates to communication technical field, particularly relate to method, mobile terminal based on TD-SCDMA transparent transmission voice channel transmitting grouped data.
Background technology
At present, the long-distance transmissions of data and the fail safe one of transmission are to being the focus that people pay close attention to, the mode of continuous data transfer has a lot, but the mode that the voice channel utilizing public wireless network to provide realizes data continuous communication not yet has the ripe method solved.
In the second generation or 3 G mobile communication network, by voice channel transmission of speech signals, by dedicated data channel transferring non-speech data, both are independent mutually, usually the non-speech data transmitted by voice channel, data (IBD:In Band Data) in band are called.In the methods of the invention, in band, data comprise other the various data message except speech data, as grouped datas such as view data, video and control signals.
Along with the develop rapidly of science and technology, the expanding day of wireless communication networks area coverage, while the reliability providing communication data to transmit for people and real-time, its fail safe also causes concern day by day, guarantees that data in time, effectively, are correctly transmitted significant.
In conventional wireless communication network, circuit domain transmitting voice information, packet domain transmission packet information.Packet domain adopts store-and-forward mode transmitting grouped data, there is Forwarding Delay; Consider the expense (as the information such as source, destination address) of each packet payload, make the amount of information transmitted increase by more than 5%; In addition transmitted in packets may occur out-of-sequence, lose the problems such as sequence.And circuit domain adopts connection-oriented communication mode, ensure that communicating pair link is special, data are gone directly, and time delay is little; After communicating pair physical link is set up, exist always, can communicate at any time, ensure that real-time; Communicating pair sends according to sending order, without mis-ordering problem.
Meanwhile, in wireless communications, the fail safe of data and privacy are vital for user, core net is divided into packet domain core network and circuit domain core net, packet domain core network is connected with the Internet, be subject to network layer attack, make based on wireless communication system packet domain transmit user side and server side packet data face potential safety hazards such as such as eavesdropping, distort; And circuit domain core net is not connected with the Internet, attacker is difficult to initiate network layer to circuit domain core net and attacks, and the information that the information therefore transmitted based on wireless communication system circuit domain is comparatively transmitted by packet domain has more fail safe and privacy.
Summary of the invention
In view of the above problems, technical problem to be solved by this invention how to provide a kind of method and apparatus based on TD-SCDMA transparent transmission voice channel transmitting grouped data, any hardware cost can not increased, adopt the mode of software, between any two mobile terminals in TD-SCDMA mobile communcations system or between mobile terminal and server, ensure the reliability of transfer of data, real-time and fail safe, thus meet the key issue of the user demand of user.
For this purpose, the present invention proposes a kind of method based on TD-SCDMA transparent transmission voice channel transmitting grouped data, comprise concrete following steps:
S1: the initial data selecting trigger module user to be selected by mobile terminal data as data source, and carries out packet transaction by data conversion module to grouped data frame by frame;
S2: initiate to set up TrFO transparent transmission channel request to this side mobile switching centre by mobile terminal sound transparent transmission service trigger module;
S3: by send and/or recipient's radio network controller and transmission and/or recipient mobile switching centre perform that band is outer to be consulted, realize the consistent of speech coding type;
S4: described band is consulted outward successfully, sends speech frame by transmission and/or receiving method, medium gateway and sets up TrFO transparent transmission link, and transmits treated 12.2kbps grouped data by data transmission trigger module;
S5: be transmitted transparently to media gateway described in opposite end in core net;
S6: by the end-to-end described TrFO transparent transmission link set up, send described grouped data to callee;
S7: recipient reduces initial data by data conversion module, and shows current traffic state by state display module.
Further, described step S4 sets up TrFO transparent transmission link establishment process and specifically comprises:
S41: described transmit leg is sent to radio network controller described in initiation side by wireless receiving by carrying the codec type list supported to some extent;
S42: described initiation side radio network controller initiates request by RANAP to Mobile Switching Center Server described in described initiation side, wherein, described request information comprises the speech coding type that described transmit leg is supported;
S43: the solicited message be subject to is sent to described recipient's Mobile Switching Center Server by IAM by BICC by described transmit leg Mobile Switching Center Server;
S44: described recipient's Mobile Switching Center Server is connected by UTRAN and described recipient's radio network controller;
S45: described recipient's radio network controller is by confirming that called request message of setting up responds described recipient's Mobile Switching Center Server;
S46: described recipient's Mobile Switching Center Server sets up the first end points by receiving method, medium gateway described in Mc interface request, wherein, described first end points carries out the intercommunication in user face for described receiving method, medium gateway and described transmit leg media gateway;
S47: the request that described receiving method, medium gateway sends according to described recipient's Mobile Switching Center Server, sets up the second end points, and described double-pointed information is sent to described recipient's Mobile Switching Center Server by response message;
S48: the speech coding type that described recipient's Mobile Switching Center Server reports according to described recipient's radio network controller and the type of coding that described transmit leg Mobile Switching Center Server sends compare, determine according to priority the type of coding that both sides support, and by described Bearer Independent Call Control Protocol, the type of coding determined is sent to described transmit leg Mobile Switching Center Server;
S49: described transmit leg Mobile Switching Center Server sets up the intercommunication of described transmit leg media gateway and described receiving method, medium gateway, and control the connection establishment process between the initiation of described transmit leg media gateway with described receiving method, medium gateway; And described receiving method, medium gateway respond described transmit leg media gateway set up request message after, carrying between receiving-transmitting sides media gateway is set up, and completes TrFO and connects.
For this purpose, the invention allows for a kind of mobile terminal, comprising:
Data selection trigger module, chooses data to be transmitted for user;
Voice transparent transmission business trigger module, transparent transmission service negotiation request is sent by initiating mobile switching centre described in side for calling subscriber, described in recipient Mobile Switching Center Server response transmit leg described in media gateway set up request message after, described in receiving-transmitting sides between media gateway set up carrying;
Data conversion module, for being converted to the data of preset encoding and decoding format by the data received; And the data convert of preset encoding and decoding format is returned unprocessed form;
Data transmit trigger module, utilize voice transparent transmission channel to transmit grouped data for user, wherein, after described data transmit trigger module startup, are sent to pass-through channel after target data being used preset encoding and decoding format to encode;
State display module, for showing current state on interface.
The invention discloses a kind of method based on TD-SCDMA transparent transmission voice channel transmitting grouped data, the initial data selecting trigger module user to be selected by mobile terminal data as data source, and carries out packet transaction by data conversion module to grouped data frame by frame; Initiate to set up TrFO transparent transmission channel request to this side mobile switching centre by mobile terminal sound transparent transmission service trigger module; By to send and/or recipient's radio network controller and transmission and/or recipient mobile switching centre perform that band is outer to be consulted, realize the consistent of speech coding type; Band is outer to be consulted successfully, sends speech frame set up TrFO transparent transmission link by transmission and/or receiving method, medium gateway, and transmits treated 12.2kbps grouped data by data transmission trigger module; Opposite end media gateway is transmitted transparently in core net; By the end-to-end TrFO transparent transmission link set up, send grouped data to callee; Recipient reduces initial data by data conversion module, and shows current traffic state by state display module.The present invention can not increase any hardware cost, adopt the mode of software, between any two mobile terminals in TD-SCDMA mobile communcations system or between mobile terminal and server, ensure the reliability of transfer of data, real-time and fail safe, thus meet the user demand of user, strengthen communication efficiency and user experience.The invention also discloses a kind of mobile terminal.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to technological means of the present invention can be better understood, and can be implemented according to the content of specification, and can become apparent, below especially exemplified by the specific embodiment of the present invention to allow above and other objects of the present invention, feature and advantage.
Accompanying drawing explanation
By reading hereafter detailed description of the preferred embodiment, various other advantage and benefit will become cheer and bright for those of ordinary skill in the art.Accompanying drawing only for illustrating the object of preferred implementation, and does not think limitation of the present invention.And in whole accompanying drawing, represent identical parts with identical pa-rameter symbols.In the accompanying drawings:
Fig. 1 diagrammatically illustrates the flow chart of steps of a kind of method based on TD-SCDMA transparent transmission voice channel transmitting grouped data according to the embodiment of the present invention;
Fig. 2 diagrammatically illustrates a kind of mobile terminal according to the embodiment of the present invention;
Fig. 3 diagrammatically illustrates according to the one of the embodiment of the present invention based on TD-SCDMA transparent transmission voice channel transmitting grouped data transparent transmission structural representation;
Fig. 4 diagrammatically illustrates a kind of process of establishing schematic diagram based on the TD-SCDMA communication system transparent transmission channel based on TrFO in the device of TD-SCDMA transparent transmission voice channel transmitting grouped data according to the embodiment of the present invention.
Embodiment
The invention discloses a kind of method and apparatus based on TD-SCDMA transparent transmission voice channel transmitting grouped data, a kind of scheme may to comprise and utilize TrFO (Transcoder FreeOperation, run without encoding and decoding) the outer negotiation mechanism of band, realize transparent transmission service, this programme illustrates TD-SCDMA network transparent transmission service process of establishing for TrFO.TrFO is by unified speech coding type, thus bypass codec, held consultation by the signaling between MSC Server, network just can be held consultation to the type and model of codec before calling, after consulting, calling between mobile terminal, no longer through codec, sets up TrFO transparent transmission link.Before voice link is set up, set up end-to-end information transparent transmission channel by TrFO technology like this, and utilize this channel to carry out the transmission of grouped data, thus realize TD-SCDMA user's packet data transmission end to end.Utilize the method, calling party selects packet data content to be sent, shield the codec unit of network side, transparent, harmless transmission bandwidth of air-interface can reach the packet data content of 12.2Kbps, reduce time delay, terminal called utilizes data processing module automatic Composition in terminal called, generates the corresponding packet data content of target.
In above-mentioned business procession: calling subscriber, first by terminal operation, selects the original packet data that will transmit; These data, after module processing, are divided into the grouped data being convenient to transmit; Then between communicating pair, coding/decoding negotiation is carried out; After service negotiation success, namely set up transparent transmission channel between communicating pair; If service negotiation failure or user initiatively abandon transmitting, then mobile terminal directly enters idle holding state; When transparent transmission service is consulted successfully, enter transfer mode, when after beginning transfer of data, transparent transmission channel is occupied, and two can not be carried out voice call again, and transmit after terminating, discharge this voice transparent transmission business, communicating pair gets back to idle condition.
Below in conjunction with accompanying drawing, embodiments of the present invention is described in detail.
In order to better understand a kind of method and apparatus based on TD-SCDMA transparent transmission voice channel transmitting grouped data proposed with application the present invention, be described in detail with following accompanying drawing example.
As shown in Figure 1, the invention provides a kind of method based on TD-SCDMA transparent transmission voice channel transmitting grouped data, comprise concrete following steps:
Step S1: the initial data selecting trigger module user to be selected by mobile terminal data as data source, and carries out packet transaction by data conversion module to grouped data frame by frame.
Step S2: initiate to set up TrFO transparent transmission channel request to this side mobile switching centre by mobile terminal sound transparent transmission service trigger module.
Step S3: by send and/or recipient's radio network controller and transmission and/or recipient mobile switching centre perform that band is outer to be consulted, realize the consistent of speech coding type.
Step S4: band is outer to be consulted successfully, sends speech frame set up TrFO transparent transmission link by transmission and/or receiving method, medium gateway, and transmit treated 12.2kbps grouped data by data transmission trigger module.
Further, step S4 sets up TrFO transparent transmission link establishment process and specifically comprises:
Step S41: transmit leg is sent to initiation side radio network controller by wireless receiving by carrying the codec type list supported to some extent.
Step S42: initiate side radio network controller and initiate request by RANAP to initiation side Mobile Switching Center Server, wherein, solicited message comprises the speech coding type that transmit leg is supported.
Step S43: the solicited message be subject to is sent to recipient's Mobile Switching Center Server by IAM by BICC by transmit leg Mobile Switching Center Server.
Step S44: recipient's Mobile Switching Center Server is connected by UTRAN and recipient's radio network controller.
Step S45: recipient's radio network controller is by confirming that called request message of setting up responds recipient's Mobile Switching Center Server.
Step S46: recipient's Mobile Switching Center Server sets up the first end points by Mc interface request recipient media gateway, wherein, the first end points carries out the intercommunication in user face for receiving method, medium gateway and transmit leg media gateway.
Step S47: the request that receiving method, medium gateway sends according to recipient's Mobile Switching Center Server, sets up the second end points, and double-pointed information is sent to recipient's Mobile Switching Center Server by response message.
Step S48: the speech coding type that recipient's Mobile Switching Center Server reports according to recipient's radio network controller and the type of coding that transmit leg Mobile Switching Center Server sends compare, determine according to priority the type of coding that both sides support, and by Bearer Independent Call Control Protocol, the type of coding determined is sent to transmit leg Mobile Switching Center Server.
Step S49: transmit leg Mobile Switching Center Server sets up the intercommunication of transmit leg media gateway and receiving method, medium gateway, and control the connection establishment process between the initiation of transmit leg media gateway with receiving method, medium gateway; And receiving method, medium gateway response transmit leg media gateway set up request message after, the carrying between receiving-transmitting sides media gateway is set up, and completes TrFO and connects.
Step S5: be transmitted transparently to opposite end media gateway in core net.
Step S6: by the end-to-end TrFO transparent transmission link set up, sends grouped data to callee.
Step S7: recipient reduces initial data by data conversion module, and shows current traffic state by state display module.
The invention discloses a kind of method based on TD-SCDMA transparent transmission voice channel transmitting grouped data, the initial data selecting trigger module user to be selected by mobile terminal data as data source, and carries out packet transaction by data conversion module to grouped data frame by frame; Initiate to set up TrFO transparent transmission channel request to this side mobile switching centre by mobile terminal sound transparent transmission service trigger module; By to send and/or recipient's radio network controller and transmission and/or recipient mobile switching centre perform that band is outer to be consulted, realize the consistent of speech coding type; Band is outer to be consulted successfully, sends speech frame set up TrFO transparent transmission link by transmission and/or receiving method, medium gateway, and transmits treated 12.2kbps grouped data by data transmission trigger module; Opposite end media gateway is transmitted transparently in core net; By the end-to-end TrFO transparent transmission link set up, send grouped data to callee; Recipient reduces initial data by data conversion module, and shows current traffic state by state display module.The present invention can not increase any hardware cost, adopt the mode of software, between any two mobile terminals in TD-SCDMA mobile communcations system or between mobile terminal and server, ensure the reliability of transfer of data, real-time and fail safe, thus meet the user demand of user, strengthen communication efficiency and user experience.
A kind of voice transparent transmission business mainly utilizing TD-SCDMA mobile communications network to provide based on the method for TD-SCDMA transparent transmission voice channel transmitting grouped data that the present invention proposes, this business is the transparent transmission that user provides a kind of speech data, namely the encoding and decoding of speech data are carried out on mobile terminals, system equipment, comprise radio network controller (RNC RadioNetwork Controller), media gateway (MGW Media Gateway) and mobile switching centre (MSC Mobile Switching Center, ) do not do the process of any encoding and decoding speech, make to utilize this transparent transmission voice traffic channel transmitting grouped data to become possibility.
Further, as shown in Figure 2, the invention provides a kind of mobile terminal 10, comprising: data selection trigger module 101, voice transparent transmission business trigger module 102, data conversion module 103, data transmit trigger module 104 and state display module 105.
Particularly, data selection trigger module 101 chooses data to be transmitted for user; Voice transparent transmission business trigger module 102 sends transparent transmission service negotiation request for calling subscriber by initiating side mobile switching centre, recipient's Mobile Switching Center Server response transmit leg media gateway set up request message after, set up carrying between receiving-transmitting sides media gateway; Data conversion module 103 is for being converted to the data of preset encoding and decoding format by the data received; And the data convert of preset encoding and decoding format is returned unprocessed form; Data transmit trigger module 104 and utilize voice transparent transmission channel to transmit grouped data for user, wherein, after data transmit trigger module startup, are sent to pass-through channel after target data being used preset encoding and decoding format to encode; State display module 105 for showing current state on interface.
In order to better understand a kind of method and apparatus based on TD-SCDMA transparent transmission voice channel transmitting grouped data proposed with application the present invention, the present invention carries out following example, and protection scope of the present invention not only limits to following example.
Particularly, the voice transparent transmission business that the present invention utilizes existing TD-SCDMA system to provide, at media gateway side bypassing vocoders, realize the transparent transmission of data, mobile terminal transmits grouped data by transparent transmission voice channel, after transparent transmission service is successfully established, this passage can be regarded as a fixed line for packet data exchanged, the communicating pair connected can carry out data transmission, under permanent condition, this circuit exists all the time, and takies this channel always, based on the stability of voice channel transmission, the real-time of block data communication is better.
Further, utilize the structural representation of the method for TD-SCDMA transparent transmission voice channel transmitting grouped data, as shown in Figure 3, be specially: utilize initial data that terminal data selects trigger module that user is selected as data source; By data conversion module, frame by frame packet transaction is carried out to grouped data; Initiate to set up TrFO transparent transmission channel request to this side MSC by terminal speech transparent transmission service trigger module; The outer negotiation of band is performed to unify speech coding type by the side's of sending/receiving radio network controller (RNC) and sending/receiving side's moving exchanging center MSC; The outer negotiation of band sends speech frame to set up TrFO transparent transmission link by sending/receiving side's media gateway MGW successfully; Utilize data to transmit trigger module, transmit treated 12.2Kbps grouped data; Opposite end media gateway is transmitted transparently in core net; Grouped data is sent to callee by the end-to-end TrFO transparent transmission link set up; Recipient reduces initial data by data conversion module; Recipient shows current traffic state by state display module.In like manner known, sender of communications and recipient can be mobile terminal, and the transmit leg that also can communicate and recipient are respectively: a side is mobile terminal, and the opposing party is the server with communication function, and its operation principle as above, does not repeat herein.
Further, based on the process of establishing of the TD-SCDMA communication system transparent transmission channel of TrFO, as shown in Figure 4, particularly, transmit leg is sent to initiation side RNC by wave point by carrying the codec type list supported to some extent; Initiate side RNC and initiate request by RANAP (Radio Access Network Application Part, Radio Access Network Application Part) agreement to initiation side MSC server, solicited message comprises the speech coding type that transmit leg is supported; The solicited message received is sent to recipient's MSC server by IAM by BICC (Bearer Independent CallControl protocol, with carry independently call control protocol) by transmit leg MSC server; Recipient's MSC server is connected by UTRAN (Universal Terrestrial Radio Access, wireless access on global land) and recipient RNC; Recipient RNC is by confirming that called request message of setting up responds recipient's MSC server; Recipient's MSC server sets up a new end points by Mc interface (H.248 agreement) request recipient MGW, and this end points is used for the intercommunication that recipient MGW and transmit leg MGW carries out user face; The request that recipient MGW sends according to recipient's MSC server, sets up new end points, and the information about new end points is sent to recipient's MSC server by response message; The speech coding type that recipient's MSC server reports according to recipient RNC and the type of coding that transmit leg MSC server sends compare, determine according to priority the type of coding that both sides support, and by Bearer Independent Call Control Protocol, the type of coding determined is sent to transmit leg MSC server; Transmit leg MSC server sets up the intercommunication of transmit leg MGW and recipient MGW, and controls the connection establishment process between transmit leg MGW initiation with recipient MGW; Recipient MGW respond transmit leg MGW set up request message after, the carrying between receiving-transmitting sides MGW is set up, and completes TrFO and connects.
All parts embodiment of the present invention with hardware implementing, or can realize with the software module run on one or more processor, or realizes with their combination.It will be understood by those of skill in the art that the some or all functions that microprocessor or digital signal processor (DSP) can be used in practice to realize according to the some or all parts in embodiment of the present invention equipment.The present invention can also be embodied as part or all equipment for performing method as described herein or system program (such as, computer program and computer program).Realizing program of the present invention and can store on a computer-readable medium like this, or the form of one or more signal can be had.Such signal can be downloaded from internet website and obtain, or provides on carrier signal, or provides with any other form.
Alleged herein " embodiment ", " embodiment " or " one or more embodiment " means, the special characteristic in conjunction with the embodiments described, structure or characteristic comprise at least one embodiment of the present invention.In addition, note that the word example of " in one embodiment " here not necessarily refers to same embodiment entirely.
In specification provided herein, describe a large amount of detail.But can understand, embodiments of the invention can be put into practice when not having these details.In some instances, be not shown specifically known method, structure and technology, so that not fuzzy understanding of this description.
The present invention will be described instead of limit the invention to it should be noted above-described embodiment, and those skilled in the art can design alternative embodiment when not departing from the scope of claims.In the claims, any reference symbol between bracket should be configured to limitations on claims.Word " comprises " not to be got rid of existence and does not arrange element in the claims or step.Word "a" or "an" before being positioned at element is not got rid of and be there is multiple such element.The present invention can by means of including the hardware of some different elements and realizing by means of the computer of suitably programming.In the unit claim listing some systems, several in these systems can be carry out imbody by same hardware branch.Word first, second and third-class use do not represent any order.Can be title by these word explanations.
In addition, shall also be noted that the language used in this specification is mainly in order to object that is readable and instruction is selected, instead of select to explain or limiting theme of the present invention.Therefore, when not departing from the scope and spirit of appended claims, many modifications and changes are all apparent for those skilled in the art.For scope of the present invention, be illustrative to disclosing of doing of the present invention, and nonrestrictive, and scope of the present invention is defined by the appended claims.
Although describe embodiments of the present invention by reference to the accompanying drawings, but those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, such amendment and modification all fall into by within claims limited range.
Claims (3)
1. based on a method for TD-SCDMA transparent transmission voice channel transmitting grouped data, it is characterized in that, comprise concrete following steps:
S1: the initial data selecting trigger module user to be selected by mobile terminal data as data source, and carries out packet transaction by data conversion module to grouped data frame by frame;
S2: initiate to set up TrFO transparent transmission channel request to this side mobile switching centre by mobile terminal sound transparent transmission service trigger module;
S3: by send and/or recipient's radio network controller and transmission and/or recipient mobile switching centre perform that band is outer to be consulted, realize the consistent of speech coding type;
S4: described band is consulted outward successfully, sends speech frame by transmission and/or receiving method, medium gateway and sets up TrFO transparent transmission link, and transmits treated 12.2kbps grouped data by data transmission trigger module;
S5: be transmitted transparently to media gateway described in opposite end in core net;
S6: by the end-to-end described TrFO transparent transmission link set up, send described grouped data to callee;
S7: recipient reduces initial data by data conversion module, and shows current traffic state by state display module.
2. the method for claim 1, is characterized in that, described step S4 sets up TrFO transparent transmission link establishment process and specifically comprises:
S41: described transmit leg is sent to radio network controller described in initiation side by wave point by carrying the codec type list supported to some extent;
S42: described initiation side radio network controller initiates request by RANAP to Mobile Switching Center Server described in described initiation side, wherein, described request information comprises the speech coding type that described transmit leg is supported;
S43: the solicited message be subject to is sent to described recipient's Mobile Switching Center Server by IAM by BICC by described transmit leg Mobile Switching Center Server;
S44: described recipient's Mobile Switching Center Server is connected by UTRAN and described recipient's radio network controller;
S45: described recipient's radio network controller is by confirming that called request message of setting up responds described recipient's Mobile Switching Center Server;
S46: described recipient's Mobile Switching Center Server sets up the first end points by receiving method, medium gateway described in Mc interface request, wherein, described first end points carries out the intercommunication in user face for described receiving method, medium gateway and described transmit leg media gateway;
S47: the request that described receiving method, medium gateway sends according to described recipient's Mobile Switching Center Server, sets up the second end points, and described double-pointed information is sent to described recipient's Mobile Switching Center Server by response message;
S48: the speech coding type that described recipient's Mobile Switching Center Server reports according to described recipient's radio network controller and the type of coding that described transmit leg Mobile Switching Center Server sends compare, determine according to priority the type of coding that both sides support, and by described Bearer Independent Call Control Protocol, the type of coding determined is sent to described transmit leg Mobile Switching Center Server;
S49: described transmit leg Mobile Switching Center Server sets up the intercommunication of described transmit leg media gateway and described receiving method, medium gateway, and control the connection establishment process between the initiation of described transmit leg media gateway with described receiving method, medium gateway; And described receiving method, medium gateway respond described transmit leg media gateway set up request message after, carrying between receiving-transmitting sides media gateway is set up, and completes TrFO and connects.
3. a mobile terminal, is characterized in that, comprising:
Data selection trigger module, chooses data to be transmitted for user;
Voice transparent transmission business trigger module, transparent transmission service negotiation request is sent by initiating mobile switching centre described in side for calling subscriber, described in recipient Mobile Switching Center Server response transmit leg described in media gateway set up request message after, described in receiving-transmitting sides between media gateway set up carrying;
Data conversion module, for being converted to the data of preset encoding and decoding format by the data received; And the data convert of preset encoding and decoding format is returned unprocessed form;
Data transmit trigger module, utilize voice transparent transmission channel to transmit grouped data for user, wherein, after described data transmit trigger module startup, are sent to pass-through channel after target data being used preset encoding and decoding format to encode;
State display module, for showing current state on interface.
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| CN114624883A (en) * | 2022-03-08 | 2022-06-14 | 常山县亿思达电子有限公司 | Mixed reality glasses system based on flexible curved surface transparent micro display screen |
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