CN100446583C - Method for realizing data loading service based on circuit switched domain - Google Patents
Method for realizing data loading service based on circuit switched domain Download PDFInfo
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- CN100446583C CN100446583C CNB200510076891XA CN200510076891A CN100446583C CN 100446583 C CN100446583 C CN 100446583C CN B200510076891X A CNB200510076891X A CN B200510076891XA CN 200510076891 A CN200510076891 A CN 200510076891A CN 100446583 C CN100446583 C CN 100446583C
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Abstract
The present invention discloses a method for realizing data loading services based on circuit switched domains, which is used for data bearing service communication among terminals in a data service communication group. The present invention comprises that the method respectively establishes a data service passage to a circuit switching field network side for each terminal in the data service communication group, and circuit switching field network side can transmit interactive data messages among the terminals via the data service passage connected with each terminal. The present invention can reduce data service passage resource occupation among the terminals based on the data bearing service of the circuit switching field, and the present invention can improve communication speed.
Description
Technical field
The present invention relates to data communication technology field, relate in particular to a kind of method that realizes data loading service based on circuit commutative field.
Background technology
In data communication technology, point-to-point (PTP, Point To Point) data communication service can be carried based on the circuit commutative field (CS, Circuit Switching) of various types of communication system.Mainly adopt during as the CS territory bearing data service in the gsm mobile communication system and share formula network interworking function (SIWF, Shared Interworking Function) equipment is realized, thereby reaches the purpose of Public Land Mobile Nerwork PLMN and fixed communication network (as PSTN net, ISDN net or PSPDN net etc.) intercommunication; Simultaneously also can realize carrying out based on the CS territory between the different wireless communication terminal purpose of data communication.The network system topological diagram in gsm mobile communication system CS territory please be concrete with reference to shown in Figure 1, by SIWF equipment, can realize carrying out between mobile network user and the fixed network users calling of data loading service, and realize the function that mobile network user is got online without being tethered to a cable.
Network system topological diagram based on above-mentioned gsm mobile communication system CS territory shown in Figure 1, when needing to carry out data loading service with an other notebook computer, a notebook computer (NB) communicates by letter, can connect a mobile phone (MS) by data wire or be connected and fixed telephone wire by Modem with notebook computer, then by the hyperterminal software on the notebook computer (the serial communication instrument that windows operating system carries), dial called mobile phone number or called fixed telephone number, carrying out data loading service calls out, so just can set up a data service channel between the calling and called user, two notebook computers just can be realized data loading service communication by this data service channel.Accordingly, if a plurality of terminals need be carried out data loading service communication based on the CS territory each other, just need set up point-to-point data service channel between the terminal respectively in twos, when one of them terminal during to the other-end broadcast data messages, need respectively on each the bar data service channel between own and the other-end, send data one by one.
In sum, carry out data loading service communication based on the CS territory of communications network system in the manner described above, several big drawback that certainly exists is as follows:
1) if need carry out the communication of Point-to-Point Data bearer service based on the CS territory of communications network system between N terminal, just in requisition for setting up the data service channel of N * (N-1)/2, if adding the terminal number N of communication increases, then will increase with geometric index in requisition for the data service channel number of setting up, the terminal data of participating in communication as assumption principle is N, the data service channel number of need setting up is N * (N-1)/2, when (N+1) individual terminal also adds communication, then need newly-built [(N+1) * (N+1-1)/2]-[N * (N-1)/2]=N data service channel, cause the data service channel resource that takies more thus.
2) when a terminal when other a plurality of terminals are carried out broadcast data messages, need respectively on N-1 the data service channel of setting up between own and other each terminals, to send data one by one, cause communication speed slower thus.
3) when a plurality of terminals when terminal sends data-message, if receiving terminal does not have enough buffer memorys, after need receiving the data-message of transmission terminal transmission, receive the next data-message that terminal sends that sends again, therefore need to coordinate and wait in line between a plurality of transmission terminals the arrival of transmitting time, and a plurality of transmission terminals can not send data simultaneously, also can cause communication speed problem slowly thus.
Summary of the invention
The technical problem to be solved in the present invention is to propose a kind of method that realizes data loading service based on circuit commutative field, the data service channel resource that takies when carrying out data loading service communication based on circuit commutative field to reduce between a plurality of terminals, and improve communication speed.
For addressing the above problem, the technical scheme that the present invention proposes is as follows:
A kind of method based on circuit commutative field realization data loading service is used for carrying out data loading service communication between each terminal in the data service communication set, comprises step:
A. the circuit switching domain network side is respectively each interior terminal of data service communication set and sets up a data service channel to the circuit switching domain network side;
B. the circuit switching domain network side transmits mutual data-message between the terminal by the data service channel that is connected with each terminal.
Also comprise step before the described steps A:
Each terminal in the data service communication set sends the solicited message that is used to ask to set up data service channel to the circuit switching domain network side;
In the described steps A, after receiving described request information, carry out the processing that is respectively a data service channel of each terminal distribution by the shared formula network interworking function entity of circuit switching domain network side.
Also comprise step in the described steps A:
The circuit switching domain network side is provided with gap marker respectively for distributing to each terminal data service passage;
And will set up mapping relations and storage between the terminal iidentification for the gap marker of the data service channel of terminal distribution and counterpart terminal.
Also comprise step before the described steps A:
Consult to determine to carry out between each terminal in the group data interaction direction rule of data loading service communication by the data service communication set; And
The mutual direction rule of established data also is stored in the circuit switching domain network side in advance with the terminal iidentification embodiment.
Described step B specifically comprises step:
B1. the circuit switching domain network side is according to the data interaction direction rule of the terminal iidentification index stores of data transmission terminal, the receiving terminal that specified data will be sent to; And
B2. according to the gap marker of the terminal iidentification index stores of receiving terminal and the mapping relations between the terminal iidentification, determine the gap marker of the data service channel that receiving terminal is connected with the circuit switching domain network side; And
B3. according to the gap marker of determining, send data to receiving terminal by the data service channel of correspondence respectively.
Described step B specifically comprises step in the communication of point-to-multipoint data loading service:
Each adopts high speed data link control protocol or point-to-point protocol that data are encapsulated from terminal; And
Frame with encapsulation sends to the circuit switching domain network side respectively;
Be transmitted to master terminal after each Frame of sending from terminal being sorted according to the sequencing of receiving data frames by the circuit switching domain network side;
Master terminal adopts the V.110 agreement of the asynchronous transparent data bearer service of BS24 wireless side that data are encapsulated; And
The Frame of encapsulation is sent to the circuit switching domain network side;
By the circuit switching domain network side Frame that receives is transmitted to each respectively from terminal.
Described step B specifically comprises step in the communication of point-to-multipoint data loading service:
Each adopts high speed data link control protocol or point-to-point protocol that data are encapsulated from terminal; And
Frame with encapsulation sends to the circuit switching domain network side respectively;
Be transmitted to master terminal after each Frame of sending from terminal being sorted according to the sequencing of receiving data frames by the circuit switching domain network side;
Master terminal adopts the V.110 agreement of the asynchronous transparent data bearer service of BS24 wireless side that data are encapsulated; And
The Frame of encapsulation is sent to the circuit switching domain network side;
By the circuit switching domain network side Frame that receives is transmitted to each respectively from terminal.
Described step B specifically comprises step in the communication of Point-to-Point Data bearer service:
Sending terminal adopts the V.110 agreement of the asynchronous transparent data bearer service of BS24 wireless side that data are encapsulated; And
The Frame of encapsulation is sent to the circuit switching domain network side;
By the circuit switching domain network side Frame that receives is transmitted to receiving terminal.
Described step B specifically comprises step in the communication of Point-to-Point Data bearer service:
Sending terminal adopts the V.110 agreement of the asynchronous transparent data bearer service of BS24 wireless side that data are encapsulated; And
The Frame of encapsulation is sent to the circuit switching domain network side;
By the circuit switching domain network side Frame that receives is transmitted to receiving terminal
The beneficial effect that the present invention can reach is as follows:
The method that the present invention is based on CS territory realization data loading service is set up a data service channel to the CS domain network side by each terminal that is respectively in the data service communication set, finishes the data transfer process of carrying out between the terminal in the group in point-to-point or the point-to-multipoint data loading service communication process by the data service channel that is connected with each terminal by the CS domain network side then.Thereby can avoid carrying out point-to-point between the terminal in the communication set or take the more drawback of data service channel resource during the communication of point-to-multipoint bearer service; Can also make simultaneously between the terminal when carrying out the communication of point-to-multipoint bearer service, send terminal and can send data to a plurality of receiving terminals simultaneously by the forwarding effect of CS domain network side, and receiving terminal can also receive the data of handling well via CS domain network side ordering of being sent by a plurality of transmission terminals simultaneously, thereby improved the communication speed of data loading service.
Description of drawings
Fig. 1 is the network system topological diagram in gsm mobile communication system CS territory;
Fig. 2 is a main realization principle flow chart of the present invention;
Fig. 3 is an embodiment process chart of realizing bearer service communication based on the principle of the invention;
The schematic diagram that the data service channel configuration respective channel that Fig. 4 is a terminal distribution for CS domain network side of the present invention identifies;
Fig. 5 is train locomotive sends a transmission state schematic diagram from data-message to each assisting vehicle car;
Fig. 6 is each assisting vehicle car sends a transmission state schematic diagram from data-message to train locomotive;
Fig. 7 sends the envelope frame of data and assisting vehicle car data when train locomotive sends data and separates frame processing procedure schematic diagram to the assisting vehicle car for train locomotive.
Embodiment
At the shortcoming that above-mentioned prior art exists, the method that realizes data loading service based on the CS territory that proposes is here all set up the data service channel of point-to-point between need per two terminals in communication set, avoids the waste of channel resource; And, can realize the data broadcasting of point-to-multipoint at synchronization.
Realize that to the present invention is based on the CS territory specific implementation process of the method for data loading service is explained in detail below in conjunction with each accompanying drawing.
See also Fig. 2, this figure is a main realization principle flow chart of the present invention; Main implementation procedure of the present invention is as follows:
Each terminal that step S10, CS domain network side are respectively in the data service communication set is set up a data service channel to the CS domain network side;
Step S20, CS domain network side transmit by the data service channel that is connected with each terminal and carry out data loading service mutual data-message when communicating by letter between the terminal.
See also Fig. 3, this figure is based on the embodiment process chart that the principle of the invention realizes bearer service communication, and its main implementation procedure is as follows:
Step S101, consult to determine to carry out between each terminal in the group data interaction direction rule of data loading service communication by the data service communication set, for example total A, B, four terminal-joined bearer services of C and D are communicated by letter in the tentation data service communication group, then consult the mutual direction rule of established data can be as follows by the data service communication set:
Terminal A sends data, and terminal B, C and D can receive;
Terminal B sends data, and terminal A and C can receive;
Terminal C sends data, and terminal A and B can receive; And
Terminal D sends data, and terminal A can receive.
Step S102 also is stored in the CS domain network side with the mutual direction rule of above-mentioned established data in advance with the terminal iidentification embodiment, and wherein above-mentioned data interaction direction rule is specific as follows with the form that terminal iidentification embodies:
Table 1:
| Send terminal iidentification | The receiving terminal sign |
| A | B，C，D |
| B | A，C |
| C | A，B |
| D | A |
Step S103, each terminal in the data service communication set sends the solicited message that is used to ask to set up data service channel to the CS domain network side;
Step S104 after the shared formula network interworking function entity SIWF in the CS domain network side receives solicited message, is respectively data service channel of each terminal distribution;
Step S105, CS domain network side are that above-mentioned each terminal data service passage of distributing to is provided with corresponding gap marker respectively;
Step S106 sets up mapping relations and storage between the gap marker that the CS domain network side will dispose for the data service channel of terminal distribution and the terminal iidentification of counterpart terminal; As shown in Figure 4, suppose that the CS domain network side is that the gap marker of distributing to the data service channel configuration of terminal A is " 1 ", the gap marker that disposes for the data service channel of distributing to terminal B is " 2 ", for the gap marker of the data service channel configuration of distributing to terminal C for " 3 " and for the gap marker of the data service channel configuration of distributing to terminal D is " 4 ", then the CS territory set up and the gap marker and the mapping relations between the terminal iidentification of storage specific as follows:
Table 2:
| Terminal iidentification | Gap marker |
| A | 1 |
| B | 2 |
| C | 3 |
| |
4 |
Step S107, based on said process, when carrying out data loading service communication, the CS domain network side is according to the data interaction direction rule (table 1) of the terminal iidentification index stores of data transmission terminal, the receiving terminal that specified data will be sent between terminal and the terminal;
Step S108, CS domain network side determine the gap marker of the data service channel that receiving terminal is connected with the CS domain network side according to the gap marker of the terminal iidentification index stores of receiving terminal and the mapping relations (table 2) between the terminal iidentification;
Step S109, the CS domain network side sends data to receiving terminal by the data service channel of correspondence respectively according to above-mentioned definite gap marker.
Wherein based on the principle of the invention, when carrying out the bearer service point-to-multipoint delivery between each terminal in the communication set, each can adopt high speed data link control protocol (HDLC from terminal, High Data LinkControl) or point-to-point protocol (PPP, Point to point protocol) data are encapsulated; And respectively the Frame after the encapsulation process is sent to the CS domain network side; Each Frame of sending from terminal is sorted according to the sequencing of receiving data frames by the CS domain network side and to be transmitted to master terminal after handling.And master terminal can adopt the V.110 agreement of the asynchronous transparent data bearer service of BS24 wireless side that data are carried out encapsulation process; And the Frame after the encapsulation process sent to the CS domain network side; By the CS domain network side Frame that receives is transmitted to each respectively from terminal.
And based on the principle of the invention, when carrying out the bearer service point-to-point communication between each terminal in the communication set, send terminal can adopt the V.110 agreement of the asynchronous transparent data bearer service of BS24 wireless side that data are carried out encapsulation process; And the Frame after the encapsulation process sent to the CS domain network side; By the CS domain network side Frame that receives is transmitted to receiving terminal.
Below description be the present invention is based on a kind of application of method on railway that circuit commutative field is realized data loading service, since elaborate the specific implementation process of operation principle of the present invention.
Between present stage China's locomotive engine locomotive, carry out Synchronization Control communication, still adopting onboard system to set up direct-connected mode by 450M frequency range radio station communicates, this communication mode also belongs to first generation simulation mobile communication project, has shortcomings such as communication security is poor, the frequency range utilance is low.Along with development of Communication Technique, second generation digital mobile communication system, especially GSM digital cellular mobile communication systems (hereinafter to be referred as gsm system) have obtained in the whole world using widely; Gsm system has the encrypted authentication function, therefore can guarantee user's communications confidentiality and internet security; And advantages such as gsm system also has, and antijamming capability is strong, the interior good communication quality of signal cover.Formulate (the ETSI of the ETS committee of gsm system standard technique, European Telecommunications Standards Institute) process modification and perfection technical standard on the basis of gsm system, made GSMR standard based on the railway mobile communication system, because the GSMR standard effectively has been applied to the advantageous characteristic of gsm system on the Railroad Communication System, so the GSMR standard has also obtained promotion and application widely in the various countries railway system.
Rail transportation system adopts the heavy loading locomotive solution for improving conevying efficiency, the loading capacity of every column weight carrier aircraft car may be up to 20,000 tons about, therefore need the multi-section locomotive to carry out sync pulling, this just requires to carry out between the multi-section locomotive simultaneous operation control, quickens, slows down and brake so that will reach simultaneously as much as possible between the multi-section locomotive.In train travelling process, dispatching patcher or dispatcher can only command one of them locomotive, this locomotive is commonly referred to train locomotive, other locomotive all is subjected to the control of train locomotive, be commonly referred to the assisting vehicle car, to make like this between train locomotive and a plurality of assisting vehicle car and carry out sync pulling, just need real-time transmitting control order so between train locomotive and each assisting vehicle car.If according to the existing mode that realizes data loading service communication based on circuit commutative field, set up a data service channel between per two locomotives that just need the GSMR network to list car for a column weight, if listing car, a column weight has N locomotive, then need for setting up N * (N-1)/data service channel between this N locomotive, so that this N locomotive can be based on this N * (N-1)/2 a data service channel carries out data loading service communication each other.
After employing the present invention is based on the method principle of CS territory realization data loading service, set up the data service channel process between the train locomotive of heavy haul train and each assisting vehicle car, and carry out the process point-to-point or communication of point-to-multipoint bearer service by the data service channel of setting up and be: any one trainman dials a special number to GSMR system centre by the portable terminal of installing on the locomotive, MSC/SIWF in the GSMR system distributes one group of data service channel for this column weight carrier aircraft car in advance, and, just can keep communicating to connect between the portable terminal on MSC/SIWF and this locomotive like this to data service channel of this locomotive of calling out into distribution.Other locomotives also can be successively by dial identical special number to GSMR system centre to insert in succession, set up data service channel between realization and the MSC/SIWF.The train locomotive and any assisting vehicle car that list car when this column weight insert simultaneously, and MSC/SIWF just can set up the point-to-multipoint bearer service communication between train locomotive and the assisting vehicle car, to satisfy the performance requirement of multimachine car simultaneous operation control.
Utilize the principle of the invention to realize the Multiple driver communications within the same train business, need MSC and SIWF in locomotive portable terminal, the GSMR system to carry out following work disposal respectively, set up with the data service channel that cooperation is finished between locomotive portable terminal and the MSC/SIWF, illustrate respectively that below MSC in locomotive portable terminal, the GSMR system and SIWF need the work of treatment of carrying out respectively:
1, locomotive portable terminal
Require the trainman to initiate to set up the solicited message of data service channel to network side by the locomotive portable terminal; Unified management for the ease of system, require all trainmans to dial same access code (such as 186), then with train number number, locomotive ID and whether be that the sign equivalent-load of train locomotive brings network side in the solicited message of setting up data service channel by the locomotive portable terminal.If the locomotive portable terminal breaks down, cause this locomotive to connect interruption to the data service channel of GSMR network side, after then this locomotive portable terminal detects fault, remind the driver, require the driver to rebulid the data service channel connection by the locomotive portable terminal, its set up process and primary data service channel to set up process identical.
2, the MSC in the GSMR system
MSC is set supports a kind of new type of call, called after " Multiple driver communications within the same train type of call ", suppose with call prefix to be that 186 call arrangement is that corresponding the type is called out, after then MSC receives the calling of the type, from the solicited message of setting up data service channel that the locomotive portable terminal is sent, extract train number number, locomotive ID and whether be the information of train locomotive, for the locomotive that makes a call to this is set up a data service channel, MSC initiates the request of the asynchronous transparent bearer service passage of application BS24 to SIWF, and with train number number, locomotive ID, whether be that information such as the sign of train locomotive and Multiple driver communications within the same train type of service send SIWF to.Wherein one in the Multiple driver communications within the same train business set up the data service channel stand between MSC/SIWF and each locomotive portable terminal and all will be kept communicating to connect during whole train operation, therefore in the whole service distance, it is normal that MSC will keep all data service channels of having set up to connect.
3, the SIWF in the GSMR system
SIWF is after the solicited message of receiving the asynchronous transparent bearer service passage of application BS24 that MSC sends, the Multiple driver communications within the same train type of service that transmits according to MSC, judge this time request and be the Multiple driver communications within the same train service request, the train number that MSC is transmitted number is as the index sign of associated data service channel group again, if being first of this train, the locomotive that makes a call sets up the requestor of data service channel, SIWF is when being this locomotive distribute data service channel, in order to realize the data service broadcast capability, to be each locomotive difference reserved data service channel of this row train, if before certain locomotive of this train set up and MSC/SIWF between data service channel, then SIWF is just being that the data service channel set up of this locomotive and the data service channel set up for the front locomotive are advised in same associated data service channel group.And the locomotive ID that SIWF transmits according to MSC and whether be one's own job machine identification information, the broadcaster of determining synchronically controlling information to the distributor of data-message to.
MSC in locomotive portable terminal, the GSMR system and SIWF just can finish the foundation of data service channel after finishing corresponding work of treatment according to said process.Based on setting up good data service channel, when train locomotive and assisting vehicle car all are linked into the GSMR network, the train locomotive portable terminal is broadcast to other assisting vehicle car data service channels with the Synchronization Control instruction by the train locomotive data service channel that SIWF distributes, so that the Synchronization Control instruction is sent to each assisting vehicle car portable terminal, the Synchronization Control instruction that each assisting vehicle car portable terminal response receives, and response message fed back to the train locomotive data service channel by the assisting vehicle car data service channel that SIWF distributes, feeding back to the train locomotive portable terminal, thereby realize the purpose of each assisting vehicle car of train locomotive Synchronization Control.
Wherein the train locomotive portable terminal is when assisting vehicle car portable terminal sends data-message, adopt the V.110 agreement of the asynchronous transparent bearer service passage wireless side of traditional BS24, specifically please refer to train locomotive shown in Figure 5 sends transmission state schematic diagram from data-message to each assisting vehicle car.
And assisting vehicle car portable terminal is when the train locomotive portable terminal sends data-message, to V.110 encapsulate one deck high speed data link control (HDLC on the agreement, High Data Link Control) agreement, being about to V.110, protocol frame further is encapsulated in the HDLC protocol frame, discern a complete V.110 frame with beginning flag and termination flag with the HDLC frame, SIWF just can distinguish the whole information from certain assisting vehicle car portable terminal like this, the information of avoiding different assisting vehicle car portable terminals to be sent is interted mutually at the SIWF place, when the information that causes each assisting vehicle car portable terminal to send is sent to the train locomotive portable terminal, the problem that information is out of order.Specifically please refer to each assisting vehicle car shown in Figure 6 sends transmission state schematic diagram from data-message to train locomotive, as shown in the figure, a first in first out (FIFO is set at the SIWF place, First In First Out) processor, with according to the precedence that receives the data-message that each assisting vehicle car sends, the assisting vehicle car of the data-message of preservation transmission successively ID number, when at first receiving the message " B " that assisting vehicle car 3 sends as SIWF, the ID of record assisting vehicle car 3 identifies 3 earlier, in like manner the assisting vehicle car that successively sends message " C " " A " and " d " is carried out record ID number, thereby form an assisting vehicle car ID sequence " 3212 ", MSC/SIWF is according to the assisting vehicle car ID sequence of self record then, the data-message that each assisting vehicle car is sent is arranged according to the assisting vehicle car ID sequence of record, to arrange good data-message at last and send to the train locomotive portable terminal, as the assisting vehicle car ID sequence " 3212 " of figure according to record, MSC/SIWF finally can be assisting vehicle car 1, the message that assisting vehicle car 2 and assisting vehicle car 3 portable terminals are sent sends to the train locomotive portable terminal with the order of " B C A d ", thus the out of order problem of information when having avoided each assisting vehicle car mobile terminal to send message to the train locomotive portable terminal.
When the train locomotive portable terminal sends data to assisting vehicle car portable terminal, on the train locomotive portable terminal by the HDLC agreement, V.110 agreement etc. is carried out encapsulation process to data, the data-message that SIWF sends the train locomotive portable terminal is only separated frame and is arrived V.110 protocol layer, is transparent to the V.110 protocol layer of assisting vehicle car data service channel then.When assisting vehicle car portable terminal sends data to the train locomotive portable terminal, it is similar that its data encapsulation processing procedure and train locomotive portable terminal send data procedures to assisting vehicle car portable terminal, just need SIWF increase to Frame HDLC protocol layer separate frame and framing is handled, concrete data handling procedure sees also Fig. 7.
Certainly, for assisting vehicle car portable terminal when the train locomotive portable terminal sends data, also can use other standard packaging agreements (as point-to-point protocol PPP, Point to point protocol) or privately owned tunneling replace above-mentioned HDLC agreement data carried out encapsulation process, as long as can avoid a plurality of assisting vehicle car portable terminals when the train locomotive portable terminal sends data-message, to cause the out of order problem of information just passable easily.
In sum, realize that with the present invention is based on the CS territory scheme principle of data loading service is applied in the Multiple driver communications within the same train business field in the railway system, can avoid in original Multiple driver communications within the same train business realizing process, need frequency range between each locomotive by onboard system 450M, set up the data service channel between the locomotive portable terminal in twos, thereby cause taking that the data service channel number is more, the frequency range utilance is low and data broadcasting and multiple spot send problems such as data speed is slow to single-point.
Simultaneously because the particularity of heavy haul train, simultaneous operation between each locomotive control is required than higher, application the present invention program just can well satisfy the simultaneous operation control performance requirement of heavy haul train, thereby make the synchronous control performance of multimachine car reach optimization, make whole train starting and parking more rapidly steadily, operation is more safe and effective; In addition, between the multimachine car preferably the Synchronization Control performance also can increase the rail adhesion strength, improve driving power, and improve fuel efficiency, and then improve the transport capacity of the railway system, and reduce operating cost.
Implement in the Multiple driver communications within the same train business of the railway system by means of the method that the present invention is based on CS territory realization data loading service, can satisfy the Synchronization Control performance requirement of a plurality of assisting vehicles of one's own job machine Synchronization Control, and have that locomotive call out to insert rapidly, data traffic channels is long-time connects reliable, beared information and transmit and quick and precisely wait advantage, satisfy the end-to-end quality guarantee (QoS that railway interests formulates, Quality of Safeguard) performance requirement, concrete performance index such as the following table that satisfies:
End-to-end QoS performance index in the GSMR system
| Project | Index |
| The MOC connection establishment delay | ＜5 seconds (95%), 7.5 seconds (100%) |
| Probability of failure connects | ＜10 -3 |
| The error rate of transparent TCH/F2.4 | ＜10 -4(in 90% time) |
| Maximum end-to-end delay | 0.5 second |
| Average end-to-end delay (30 8 bit a tree name frames) | 400 to 500 milliseconds |
| Data transmission rate | ≥2.4kbit/s |
| The connection failure probability | ＜10 -4 |
| Handover is intermittently maximum | 300ms |
| The instruction time of connection failure | ＜1 second |
| Availability | 99.95％ |
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (9)
1, a kind of method based on circuit commutative field realization data loading service is used for carrying out data loading service communication between each terminal in the data service communication set, it is characterized in that, comprises step:
A. the circuit switching domain network side is respectively each interior terminal of data service communication set and sets up a data service channel to the circuit switching domain network side;
B. the circuit switching domain network side transmits mutual data-message between the terminal by the data service channel that is connected with each terminal.
2, the method based on circuit commutative field realization data loading service as claimed in claim 1 is characterized in that, also comprises step before the described steps A:
Each terminal in the data service communication set sends the solicited message that is used to ask to set up data service channel to the circuit switching domain network side;
In the described steps A, after receiving described request information, carry out the processing that is respectively a data service channel of each terminal distribution by the shared formula network interworking function entity of circuit switching domain network side.
3, the method based on circuit commutative field realization data loading service as claimed in claim 1 or 2 is characterized in that, also comprises step in the described steps A:
The circuit switching domain network side is provided with gap marker respectively for distributing to each terminal data service passage;
And will set up mapping relations and storage between the terminal iidentification for the gap marker of the data service channel of terminal distribution and counterpart terminal.
4, the method based on circuit commutative field realization data loading service as claimed in claim 3 is characterized in that, also comprises step before the described steps A:
Consult to determine to carry out between each terminal in the group data interaction direction rule of data loading service communication by the data service communication set; And
The mutual direction rule of established data also is stored in the circuit switching domain network side in advance with the terminal iidentification embodiment.
5, the method based on circuit commutative field realization data loading service as claimed in claim 4 is characterized in that described step B specifically comprises step:
B1. the circuit switching domain network side is according to the data interaction direction rule of the terminal iidentification index stores of data transmission terminal, the receiving terminal that specified data will be sent to; And
B2. according to the gap marker of the terminal iidentification index stores of receiving terminal and the mapping relations between the terminal iidentification, determine the gap marker of the data service channel that receiving terminal is connected with the circuit switching domain network side; And
B3. according to the gap marker of determining, send data to receiving terminal by the data service channel of correspondence respectively.
6, the method based on circuit commutative field realization data loading service as claimed in claim 1 or 2 is characterized in that described step B specifically comprises step in the communication of point-to-multipoint data loading service:
Each adopts high speed data link control protocol or point-to-point protocol that data are encapsulated from terminal; And
Frame with encapsulation sends to the circuit switching domain network side respectively;
Be transmitted to master terminal after each Frame of sending from terminal being sorted according to the sequencing of receiving data frames by the circuit switching domain network side;
Master terminal adopts the V.110 agreement of the asynchronous transparent data bearer service of BS24 wireless side that data are encapsulated; And
The Frame of encapsulation is sent to the circuit switching domain network side;
By the circuit switching domain network side Frame that receives is transmitted to each respectively from terminal.
7, the method based on circuit commutative field realization data loading service as claimed in claim 5 is characterized in that described step B specifically comprises step in the communication of point-to-multipoint data loading service:
Each adopts high speed data link control protocol or point-to-point protocol that data are encapsulated from terminal; And
Frame with encapsulation sends to the circuit switching domain network side respectively;
Be transmitted to master terminal after each Frame of sending from terminal being sorted according to the sequencing of receiving data frames by the circuit switching domain network side;
Master terminal adopts the V.110 agreement of the asynchronous transparent data bearer service of BS24 wireless side that data are encapsulated; And
The Frame of encapsulation is sent to the circuit switching domain network side;
By the circuit switching domain network side Frame that receives is transmitted to each respectively from terminal.
8, the method based on circuit commutative field realization data loading service as claimed in claim 1 or 2 is characterized in that described step B specifically comprises step in the communication of Point-to-Point Data bearer service:
Sending terminal adopts the V.110 agreement of the asynchronous transparent data bearer service of BS24 wireless side that data are encapsulated; And
The Frame of encapsulation is sent to the circuit switching domain network side;
By the circuit switching domain network side Frame that receives is transmitted to receiving terminal.
9, the method based on circuit commutative field realization data loading service as claimed in claim 5 is characterized in that described step B specifically comprises step in the communication of Point-to-Point Data bearer service:
Sending terminal adopts the V.110 agreement of the asynchronous transparent data bearer service of BS24 wireless side that data are encapsulated; And
The Frame of encapsulation is sent to the circuit switching domain network side;
By the circuit switching domain network side Frame that receives is transmitted to receiving terminal.
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| CNB200510076891XA CN100446583C (en) | 2005-06-20 | 2005-06-20 | Method for realizing data loading service based on circuit switched domain |
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| CNB200510076891XA CN100446583C (en) | 2005-06-20 | 2005-06-20 | Method for realizing data loading service based on circuit switched domain |
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| CN100446583C true CN100446583C (en) | 2008-12-24 |
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| CN102143504A (en) * | 2010-02-01 | 2011-08-03 | 华为终端有限公司 | Method and device for remotely managing wireless mobile terminal (MT) |
| CN112243218B (en) * | 2019-07-19 | 2022-04-05 | 华为技术有限公司 | Data service transmission method and electronic equipment |
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| WO1998017076A1 (en) * | 1996-10-17 | 1998-04-23 | Telefonaktiebolaget Lm Ericsson (Publ) | Shared interworking function within a mobile telecommunications network |
| CN1197357A (en) * | 1997-04-10 | 1998-10-28 | Lg情报通信株式会社 | CDMA mobile data communication system and method of wireless data communication using the system |
| WO1999053704A1 (en) * | 1998-04-09 | 1999-10-21 | Nokia Networks Oy | Implementation of multiple simultaneous calls in a mobile communication system |
| CN1494331A (en) * | 2002-10-31 | 2004-05-05 | 深圳市中兴通讯股份有限公司 | Mobile communication system and method for realizing mass business |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998017076A1 (en) * | 1996-10-17 | 1998-04-23 | Telefonaktiebolaget Lm Ericsson (Publ) | Shared interworking function within a mobile telecommunications network |
| CN1197357A (en) * | 1997-04-10 | 1998-10-28 | Lg情报通信株式会社 | CDMA mobile data communication system and method of wireless data communication using the system |
| WO1999053704A1 (en) * | 1998-04-09 | 1999-10-21 | Nokia Networks Oy | Implementation of multiple simultaneous calls in a mobile communication system |
| CN1494331A (en) * | 2002-10-31 | 2004-05-05 | 深圳市中兴通讯股份有限公司 | Mobile communication system and method for realizing mass business |
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