CN103379661A - Method and system for real time communication, vehicle device, and server - Google Patents
Method and system for real time communication, vehicle device, and server Download PDFInfo
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- CN103379661A CN103379661A CN2012101115709A CN201210111570A CN103379661A CN 103379661 A CN103379661 A CN 103379661A CN 2012101115709 A CN2012101115709 A CN 2012101115709A CN 201210111570 A CN201210111570 A CN 201210111570A CN 103379661 A CN103379661 A CN 103379661A
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Abstract
Provided is a method and a system for real time communication, a vehicle device, and a server. The method for real time communication includes: establishing a communication link between a first terminal and a second terminal by utilizing a DTMF method; carrying out data interaction between the first terminal and the second terminal by utilizing a FSK method; and disconnecting the communication link by utilizing a DTMF method. In the method for real time communication, advantages of both the DTMF modulation-demodulation method and the FSK modulation-demodulation method are taken into consideration. The DTMF method is used for user verification and link establishment, so that the method for real time communication of the embodiment of the invention is compatible with a 2G network and a 3G network, due to the strong compatibility of the DTMF method. The FSK method is used for data interaction, so that the method for real time communication of the embodiment of the invention is capable of transmitting data fast and in large quantity, due to large information transmission quantity of the FSK method. In addition, the problem of high communication error code rate is solved effectively by the vehicle device, and the server combining with an error detecting and correcting circuit.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of real-time communication method and system, mobile unit and server.
Background technology
In recent years, automobile pollution is worldwide soaring year by year.Automobile has been not only walking-replacing tool in people's eye, the future development of using towards diversification especially.For example, instant messaging, reception broadcasting, navigation etc., these application often require mobile unit to communicate by letter with far-end server, to send information or to obtain the information that is kept on the far-end server to far-end server.
The 3G network experiment of actual measurement shows, by voice channel realize communicating by letter of mobile unit and far-end server be a kind of efficiently, reliably, solution cheaply.So-called passage refers to the information transmission mode of communication exchange between telecommunication value-added service provider and the client.The characteristics of this transmission means are to be undertaken by communication network.Passage is divided into two kinds of voice channel and data channel.The typical services of voice channel is the call center.As example, the step of building of voice channel is: at first to the Ministry of Information Industry or local Communications Administration Bureau application call center licence plate; Then design and develop call center system, build machine room; The most backward telecom operators application lease sound circuit.
But, in the practical application of voice channel, adopt equipment room physical connection channel coding technology commonly used to carry out real time communication and have some defectives, little such as the transmission information amount, discrimination is low etc.
More technical schemes about real-time communication method please refer to denomination of invention and are the patent document WO2006010309 of " realizing the method for caller identification information transmission and display business at wireless access network " (A Method For Implementing The Calling Identity Delivery Service In The Wireless Access Network), but still do not solve the problems of the technologies described above.
Summary of the invention
What the present invention solved is the problem that real-time communication method can't be taken into account compatibility, relativity of information and discrimination in the prior art.
For addressing the above problem, the embodiment of the invention provides a kind of real-time communication method, comprising: adopt the DTMF mode to set up communication link between first terminal and the second terminal; Adopt the FSK mode between described first terminal and described the second terminal, to carry out data interaction; Adopt the DTMF mode to disconnect described communication link.
Alternatively, described first terminal is mobile unit, and described the second terminal is server.
Alternatively, described first terminal is communicated by letter by 3G network with described the second terminal, and described 3G network comprises WCDMA, CDMA2000, TD-SCDMA, SC-TDMA or MC-TDMA.
Alternatively, described employing DTMF mode is at first terminal and connect and set up communication link between the second terminal and comprise: described first terminal adopts the DTMF mode to send communication link to described the second terminal and sets up request, and the request of setting up of described communication link comprises user authentication information; Described the second terminal is carried out user's legitimate verification based on described user authentication information; Described the second terminal is set up the communication link with described first terminal in the situation that user's legitimate verification passes through.
Alternatively, described user authentication information comprises at least a in vehicle identification code, mobile unit identification code and the mobile unit user identify label.
Alternatively, described data comprise at least a in vehicle running state data, vehicle position data and the business datum.
Alternatively, described employing FSK mode is carried out data interaction and is comprised between first terminal and the second terminal: described first terminal adopt the FSK mode and by described communication link to described the second terminal transmission data; Described the second terminal based on described data from the Internet or data center search for, generate feedback data, described data center and described the second terminal are passed through 2G/3G network service; Described the second terminal adopts the FSK mode and returns described feedback data by described communication link to described first terminal.
The embodiment of the invention also provides a kind of mobile unit, comprising: a DTMF modem module, and be used for adopting the DTMF mode to send communication link and set up request, the request of setting up of described communication link comprises user authentication information; Or be used for adopting the DTMF mode to send communication link disconnection request; The one FSK modem module is used for after setting up communication link, adopts the data after FSK mode modulating data also will be modulated to be sent to air interface; Or be used for after setting up described communication link the data that adopt the demodulation of FSK mode to receive from described air interface.
The embodiment of the invention also provides a kind of server, comprising: the 2nd DTMF modem module, be used for adopting DTMF mode received communication request for building link, and the request of setting up of described communication link comprises user authentication information; Or be used for adopting DTMF mode received communication link to disconnect request; The 2nd FSK modem module is used for after setting up communication link, the data that adopt the demodulation of FSK mode to receive from air interface; Or be used for after setting up described communication link, adopt the data after FSK mode modulating data also will be modulated to be sent to described air interface.
Alternatively, described server also comprises: authentication unit, for the legitimate verification that carries out the user based on described user authentication information; Link unit is used for setting up communication link in the situation that the legitimate verification the user passes through.
Alternatively, the data that receive from air interface of described the 2nd FSK modem module comprise at least a vehicle running state data, vehicle position data and the business datum; The data of described the 2nd FSK modem module modulation are the feedback data of the data of described reception.
Alternatively, described server also comprises: search unit, be used for the data that receive from air interface based on described the 2nd FSK modem module from the Internet or data center is searched for, generate described feedback data, described data center and described the second terminal are passed through 2G/3G network service; Feedback unit is used for described feedback data is sent to described the 2nd FSK modem module.
The embodiment of the invention also provides a kind of real-time communication system, comprising: above-mentioned mobile unit, above-mentioned server, and air interface.
Compared with prior art, technical solution of the present invention has been taken into account the advantage of DTMF and two kinds of modulation demodulation systems of FSK.The DTMF mode is used for user rs authentication and communication link foundation, because the DTMF mode compatibility is strong, so the real-time communication method of the embodiment of the invention can compatible 2G and 3G network.FSK is used for data interaction, owing to containing much information that the FSK mode is transmitted, so the real-time communication method of the embodiment of the invention can rapid, high volume ground the transmission of data.In addition, can effectively solve the high problem of the error rate of communicating by letter in conjunction with error detection/correction circuit on mobile unit and the server.
Description of drawings
Fig. 1 is the flow chart of the real-time communication method of the embodiment of the invention;
Fig. 2 is the employing DTMF mode of the embodiment of the invention is set up communication link between first terminal and the second terminal flow chart;
Fig. 3 is the employing FSK mode of the embodiment of the invention is carried out data interaction between first terminal and the second terminal flow chart;
Fig. 4 is the structural representation of the mobile unit of the embodiment of the invention;
Fig. 5 is the structural representation of the server of the embodiment of the invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can more be become apparent, below in conjunction with accompanying drawing the specific embodiment of the present invention is described in detail.Set forth detail in the following description so that fully understand the present invention.But the present invention can be different from alternate manner described here and implements with multiple, and those skilled in the art can do similar popularization in the situation of intension of the present invention.Therefore the present invention is not subjected to the restriction of following public embodiment.
For 2G or 3G network, its air interface relates to the many levels such as network layer, data link layer and physical layer.Different according to function, every one deck inside is subdivided into again different sublayers.For example, data link layer inside can be divided into a plurality of sublayers, comprises packet data convergence protocol, Radio Link control and medium access control sublayer; And for example, Radio Resource control is a sublayer of network layer.The main task of network layer is the reliable delivery that connects between any apparatus in the assurance network, i.e. the reliable connection of " a bit to any point ".The main task of link layer is the reliable delivery that point-to-point connects between the assurance equipment, the reliable connection of namely " a bit arriving down a bit ".The main task of physical layer is the physical connection between the apparatus for establishing, particularly, physical layer is responsible for carrying out chnnel coding, spread spectrum, scrambler, modulation and corresponding demodulation, descrambling, despreading, channel-decoding, and in addition, power control and pilot tone also are the main task of physical layer synchronously.
The inventor finds that the two kinds of channel coding/decoding technology commonly used of the physical connection between the realization equipment respectively have superiority and be not enough.
For dual-tone multifrequency (Dual Tone Multi Frequency, DTMF), formed by high frequency group and low frequency group, the height frequency group respectively comprises 4 frequencies.A high-frequency signal and a low frequency signal stack form a composite signal, represent a numeral.Dtmf signal has 16 codings.The multi-frequency that adopts in the world is 8 kinds of 697Hz, 770Hz, 852Hz, 941Hz, 1209Hz, 1336Hz, 1477Hz and 1633Hz etc.It is compatible good to use the advantage of DTMF technology to be in the communicating by letter of mobile unit and far-end server, but has the little shortcoming of amount of information of carrying.
For frequency shift keying (Frequency-shift keying, FSK), be to utilize the discrete value characteristics of baseband digital signal to go the keyed carrier frequency with a kind of digital modulation technique of transmission of information.In the communicating by letter of mobile unit and far-end server, use containing much information that the advantage of FSK technology is to carry, but have the low shortcoming of discrimination.
Based on this, technical solution of the present invention provides a kind of real-time communication method.Consult Fig. 1, Fig. 1 is the flow chart of the real-time communication method of the embodiment of the invention.Described real-time communication method comprises:
S1: adopt the DTMF mode between first terminal and the second terminal, to set up communication link.
S2: adopt the FSK mode between described first terminal and described the second terminal, to carry out data interaction.
S3: adopt the DTMF mode to disconnect described communication link.
Below in conjunction with specific embodiment above-mentioned real-time communication method is elaborated.
S1: adopt the DTMF mode between first terminal and the second terminal, to set up communication link.The described communication link of setting up refers to that first terminal and the second terminal can communicate by air interface.
In the present embodiment, described first terminal is mobile unit, and described the second terminal is server.In other embodiments, described first terminal also can be other subscriber equipmenies (User Equipment, UE), such as PDA etc.; Described the second terminal also can be the cloud service center.Described first terminal can be communicated by letter by 3G network with described the second terminal, and described 3G network comprises WCDMA, CDMA2000, TD-SCDMA, SC-TDMA or MC-TDMA.Described first terminal and described the second terminal also can be passed through 2G network service, such as the GSM network.
Consult Fig. 2, specifically, described step S1 employing DTMF mode is set up communication link and is comprised between first terminal and the second terminal:
S11: described first terminal adopts the DTMF mode to send communication link to described the second terminal and sets up request, and the request of setting up of described communication link comprises user authentication information.
Described user authentication information comprises at least a in vehicle identification code, mobile unit identification code and the mobile unit user identify label.
Vehicle identification code can be Vehicle Identify Number, also can be Motor Number.Vehicle Identify Number is manufactory gives a car appointment in order to identify one group of character code, and the coding by 17 letters, numeral form claims again 17 cognizance codes, Vehicle Identify Number or 17 items.Vehicle identification code can make the car of same vehicle the double sign phenomenon can not occur within 30 years through permutation and combination, has the unique identity to vehicle, therefore can be described as " identity of automobile card ",, can be used for identifying vehicle that is.Motor Number generally can comprise the series number that engine model, production days and this engine are given when production line gets off, what have also can contain place of production code.In order to make engine have trackability, thereby obtain feedback opinion in order to be convenient to when engine is pinpointed the problems or manufacturer investigates follow the tracks of, with the ID code of vehicle of automobile number, Motor Number also is unique, namely, the Motor Number of each car is not identical, thereby can be used for identifying the vehicle at engine place.
The mobile unit identification code is the product ID of mobile unit, and each mobile unit is provided with unique product ID when dispatching from the factory; Corresponding one by one between product ID and the mobile unit, be used for this mobile unit of identification.
Mobile unit user identify label is the communication process for mobile unit and server, and server can be identified mobile unit, thereby the Service Source data can be offered corresponding mobile unit, uses for the user.
S12: described the second terminal is carried out user's legitimate verification based on described user authentication information.Particularly, after the communication link that described the second terminal adopts the DTMF mode to receive described first terminal transmission is set up request, resolve described communication link and set up the described user authentication information of request acquisition, then described user authentication information is carried out legitimate verification.
The legitimacy of authentication of users comprises: as the mobile unit of first terminal the vehicle identification code of corresponding vehicle whether be included in the user list; Whether the corresponding mobile unit identification code of mobile unit is included in the user list; Or whether mobile unit user identify label is included in the user list.Above-mentioned three kinds of user validation determination methods can be used separately, namely can only judge user's legitimacy by vehicle identification code, or only pass through the legitimacy that the mobile unit identification code is judged the user, or only judge user's legitimacy by mobile unit user identify label.Also can be with vehicle identification code, mobile unit identification code or mobile unit user identify label in twos in conjunction with the legitimacy of judging the user.Can also only work as vehicle identification code, mobile unit identification code and mobile unit user identify label and be included in the user list and meet consistency and judge that again the user is legal, so that higher fail safe to be provided.Described consistency refers to that vehicle identification code, mobile unit identification code, mobile unit user identify label are associated in user list.
In the present embodiment, described user list is pre-stored in the database of server.In other embodiments, described user list also can be stored in the database of data center, if server receives user authentication information, then searches from data center.
S13: described the second terminal is set up the communication link with described first terminal in the situation that user's legitimate verification passes through.
In the present embodiment, described server is set up the communication link with described mobile unit in the situation that user's legitimate verification passes through.
S2: adopt the FSK mode between described first terminal and described the second terminal, to carry out data interaction.
Consult Fig. 3, specifically, described step S2 employing FSK mode is carried out data interaction and is comprised between described first terminal and described the second terminal:
S21: described first terminal adopts the FSK mode and sends data by described communication link to described the second terminal.
Described data can be at least a in vehicle running state data, vehicle position data and the business datum.
S22: described the second terminal based on described data from the Internet or data center search for, generate feedback data, described data center and described the second terminal are passed through 2G/3G network service.
In the present embodiment, after server was received the data that described mobile unit sends, the corresponding Service Source of the described data of search generated feedback data from the Internet or data center.
S23: described the second terminal adopts the FSK mode and returns described feedback data by described communication link to described first terminal.
Described feedback data adopts the FSK mode to be back to mobile unit by described communication link.For example when the user need to obtain the road book from vehicle-mounted information service provider, the data that described mobile unit sends to the server of vehicle-mounted information service provider.After described server was received the data that described mobile unit sends, the corresponding road of search book Service Source generated feedback data from the Internet or data center.Described server adopts the FSK mode and returns described feedback data by described communication link to described mobile unit.Include corresponding road book in the described feedback data, described road book be downloaded, be used to mobile unit namely can according to user instruction.So-called road book is exactly the itinerary of detailed self-driving travel, also can be described as the script of self-driving travel.The road book can comprise detailed routing every day, traffic route (such as by way of place, mileage, character of road etc.), can also comprise by way of the brief introduction of sight spot scene, board and lodging arrange, weather conditions, and can derive a lot of with consume relevant information introductions etc.The form that provides of road book can be varied, can adopt text, audio format or video format etc., also can be the combination of above multiple format, thereby can colourful form offer the user.
S3: adopt the DTMF mode to disconnect described communication link.Particularly, described first terminal adopts the DTMF mode to send communication link disconnection request to described the second terminal, after the communication link that described the second terminal adopts the DTMF mode to receive described first terminal transmission disconnects request, disconnect the communication link with described first terminal, so far, the real time communication task is finished.
In the present embodiment, described mobile unit can be divided into off-mode, holding state and three kinds of operating states of service condition.During off-mode, mobile unit quits work, therefore with air interface without linking.Enter holding state after the mobile unit start, mainly carry out the tasks such as base station discovery of air interface.At service condition, mobile unit carries out professional end to end, by air interface and server interaction, carries out the task of service connection.
Trigger mobile unit when the user need to obtain information on services from vehicle-mounted information service provider, mobile unit adopts the DTMF mode to send communication link to server based on this task and sets up request, and the request of setting up of described communication link comprises user authentication information.Server carries out user's legitimate verification by user authentication information.Described server is set up the communication link with described mobile unit in the situation that user's legitimate verification passes through.After communication link is set up, adopt the FSK mode between mobile unit and server, to carry out data interaction.After finishing alternately, adopt the DTMF mode to disconnect described communication link.
If between mobile unit and server, carry out in the data exchange process, thereby the user needs again to obtain second service information from vehicle-mounted information service provider triggers mobile unit, mobile unit can adopt the DTMF mode to set up second communication link with described server based on this second task, and carries out the data interaction of relevant second service information by described second communication link.
Can set up simultaneously multiple communication links between mobile unit and the server, the corresponding user task of every communication link.
The DTMF mode is used for user rs authentication and communication link foundation, because the DTMF mode compatibility is strong, so the real-time communication method of the embodiment of the invention can compatible 2G and 3G network.
Technical solution of the present invention also provides a kind of mobile unit, consults Fig. 4, and Fig. 4 is the structural representation of the mobile unit of the embodiment of the invention.The mobile unit that the embodiment of the invention provides, for example mobile unit 100, comprising:
The one DTMF modem module 110 is used for adopting the DTMF mode to send communication link and sets up request, and the request of setting up of described communication link comprises user authentication information; Or be used for adopting the DTMF mode to send communication link disconnection request.Described user authentication information comprises at least a in vehicle identification code, mobile unit identification code and the mobile unit user identify label.
The one FSK modem module 120 is used for after setting up communication link, adopts the data after FSK mode modulating data also will be modulated to be sent to air interface; Or be used for after setting up described communication link the data that adopt the demodulation of FSK mode to receive from described air interface.Data after a described FSK modem module 120 modulation comprise at least a in vehicle running state data, vehicle position data and the business datum.
Described mobile unit 100 can also comprise the error detection/correction circuit (not shown), and described error detection/correction circuit is connected in a described DTMF modem module 110 and a described FSK modem module 120.
In the present embodiment, described mobile unit is communicated by letter by 3G network with described server, and described 3G network comprises WCDMA, CDMA2000, TD-SCDMA, SC-TDMA or MC-TDMA.In other embodiments, described mobile unit and described server also can pass through 2G network service, for example can set up communication link and the transmission of data between described mobile unit and described server by the GSM network.
Described mobile unit can be divided into off-mode, holding state and three kinds of operating states of service condition.Described mobile unit set up according to user task or the process that disconnects communication link as previously mentioned.
Technical solution of the present invention also provides a kind of server, consults Fig. 5, and the server that the embodiment of the invention provides comprises such as server 200:
The 2nd DTMF modem module 210 is used for adopting DTMF mode received communication request for building link, and the request of setting up of described communication link comprises user authentication information; Or be used for adopting DTMF mode received communication link to disconnect request.
The 2nd FSK modem module 220 is used for after setting up communication link, the data that adopt the demodulation of FSK mode to receive from air interface; Or be used for after setting up described communication link, adopt the data after FSK mode modulating data also will be modulated to be sent to described air interface.The data that described the 2nd FSK modem module 220 receives from air interface comprise at least a vehicle running state data, vehicle position data and the business datum; The data of described the 2nd FSK modem module 220 modulation are the feedback data of the data of described reception.
In the present embodiment, described server also comprises: authentication unit, for the legitimate verification that carries out the user based on described user authentication information; And link unit, be used for setting up communication link in the situation that the legitimate verification the user passes through.
Described user authentication information comprises at least a in vehicle identification code, mobile unit identification code and the mobile unit user identify label.Specifically, described authentication unit can be verified following several: as the mobile unit of first terminal the vehicle identification code of corresponding vehicle whether be included in the user list; Whether the corresponding mobile unit identification code of mobile unit is included in the user list; Or whether mobile unit user identify label is included in the user list.Described user's legitimate verification is by referring to that server is at least by an above-mentioned checking item.
Further, the described server of present embodiment also comprises: search unit, be used for the data that receive from air interface based on described the 2nd FSK modem module from the Internet or data center is searched for, generate described feedback data, described data center and described the second terminal are by 2G/3G network service; And feedback unit, be used for described feedback data is sent to described the 2nd FSK modem module.
Described server 200 can also comprise the error detection/correction circuit (not shown), and described error detection/correction circuit is connected in described the 2nd DTMF modem module 210 and described the 2nd FSK modem module 220.
Described server and described mobile unit set up according to user task or the process that disconnects communication link as previously mentioned.
The embodiment of the invention also provides a kind of real-time communication system, comprises described mobile unit, described server, and air interface.Described air interface can be the air interface of 3G network, and described 3G network comprises WCDMA, CDMA2000, TD-SCDMA, SC-TDMA or MC-TDMA.Described air interface also can be the air interface of 2G network, such as the air interface of GSM network.The communication means of described real-time communication system please refer to aforementioned real-time communication method, and this does not give unnecessary details.
It will be appreciated by those skilled in the art that, the all or part of of technique scheme is to come the relevant hardware of instruction to finish by program, described program can be stored in the computer-readable recording medium, and described storage medium can be ROM, RAM, magnetic disc, CD etc.
To sum up, technical solution of the present invention has been taken into account the advantage of DTMF and two kinds of modulation demodulation systems of FSK.The DTMF mode is used for user rs authentication and communication link foundation, because the DTMF mode compatibility is strong, so the real-time communication method of the embodiment of the invention can compatible 2G and 3G network.FSK is used for data interaction, owing to containing much information that the FSK mode is transmitted, so the real-time communication method of the embodiment of the invention can rapid, high volume ground the transmission of data.In addition, can effectively solve the high problem of the error rate of communicating by letter in conjunction with error detection/correction circuit on mobile unit and the server.
Although the present invention with preferred embodiment openly as above; but it is not to limit the present invention; any those skilled in the art without departing from the spirit and scope of the present invention; can utilize method and the technology contents of above-mentioned announcement that technical solution of the present invention is made possible change and modification; therefore; every content that does not break away from technical solution of the present invention; to any simple modification, equivalent variations and modification that above embodiment does, all belong to the protection range of technical solution of the present invention according to technical spirit of the present invention.
Claims (16)
1. a real-time communication method is characterized in that, comprising:
Adopt the DTMF mode between first terminal and the second terminal, to set up communication link;
Adopt the FSK mode between described first terminal and described the second terminal, to carry out data interaction;
Adopt the DTMF mode to disconnect described communication link.
2. real-time communication method according to claim 1 is characterized in that, described first terminal is mobile unit, and described the second terminal is server.
3. real-time communication method according to claim 1 is characterized in that, described first terminal is communicated by letter by 3G network with described the second terminal, and described 3G network comprises WCDMA, CDMA2000, TD-SCDMA, SC-TDMA or MC-TDMA.
4. real-time communication method according to claim 1 is characterized in that, described employing DTMF mode is at first terminal and connect and set up communication link between the second terminal and comprise:
Described first terminal adopts the DTMF mode to send communication link to described the second terminal and sets up request, and the request of setting up of described communication link comprises user authentication information;
Described the second terminal is carried out user's legitimate verification based on described user authentication information;
Described the second terminal is set up the communication link with described first terminal in the situation that user's legitimate verification passes through.
5. real-time communication method according to claim 4 is characterized in that, described user authentication information comprises at least a in vehicle identification code, mobile unit identification code and the mobile unit user identify label.
6. real-time communication method according to claim 1 is characterized in that, described data comprise at least a in vehicle running state data, vehicle position data and the business datum.
7. real-time communication method according to claim 1 is characterized in that, described employing FSK mode is carried out data interaction and comprised between first terminal and the second terminal:
Described first terminal adopts the FSK mode and sends data by described communication link to described the second terminal;
Described the second terminal based on described data from the Internet or data center search for, generate feedback data, described data center and described the second terminal are passed through 2G/3G network service;
Described the second terminal adopts the FSK mode and returns described feedback data by described communication link to described first terminal.
8. a mobile unit is characterized in that, comprising:
The one DTMF modem module is used for adopting the DTMF mode to send communication link and sets up request, and the request of setting up of described communication link comprises user authentication information; Or be used for adopting the DTMF mode to send communication link disconnection request;
The one FSK modem module is used for after setting up communication link, adopts the data after FSK mode modulating data also will be modulated to be sent to air interface; Or be used for after setting up described communication link the data that adopt the demodulation of FSK mode to receive from described air interface.
9. mobile unit according to claim 8 is characterized in that, described user authentication information comprises at least a in vehicle identification code, mobile unit identification code and the mobile unit user identify label.
10. mobile unit according to claim 8 is characterized in that, the data after the modulation of a described FSK modem module comprise at least a in vehicle running state data, vehicle position data and the business datum.
11. a server is characterized in that, comprising:
The 2nd DTMF modem module is used for adopting DTMF mode received communication request for building link, and the request of setting up of described communication link comprises user authentication information; Or be used for adopting DTMF mode received communication link to disconnect request;
The 2nd FSK modem module is used for after setting up communication link, the data that adopt the demodulation of FSK mode to receive from air interface; Or be used for after setting up described communication link, adopt the data after FSK mode modulating data also will be modulated to be sent to described air interface.
12. server according to claim 11 is characterized in that, also comprises:
Authentication unit is for the legitimate verification that carries out the user based on described user authentication information;
Link unit is used for setting up communication link in the situation that the legitimate verification the user passes through.
13. server according to claim 11 is characterized in that, the data that described the 2nd FSK modem module receives from air interface comprise at least a vehicle running state data, vehicle position data and the business datum; The data of described the 2nd FSK modem module modulation are the feedback data of the data of described reception.
14. server according to claim 13 is characterized in that, also comprises:
Search unit is used for the data that receive from air interface based on described the 2nd FSK modem module from the Internet or data center is searched for, and generates described feedback data, and described data center and described the second terminal are passed through 2G/3G network service;
Feedback unit is used for described feedback data is sent to described the 2nd FSK modem module.
15. a real-time communication system is characterized in that, comprising: each mobile unit of claim 8 to 10, each described server of claim 11 to 14, and air interface.
16. real-time communication system according to claim 15 is characterized in that, described air interface is the air interface of 3G network, and described 3G network comprises WCDMA, CDMA2000, TD-SCDMA, SC-TDMA or MC-TDMA.
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Cited By (1)
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| CN108631968A (en) * | 2017-03-20 | 2018-10-09 | 华为技术有限公司 | A kind of determination method and device of data feedback resource |
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| CN108631968B (en) * | 2017-03-20 | 2021-02-09 | 华为技术有限公司 | Method and device for determining data feedback resources |
| US11330561B2 (en) | 2017-03-20 | 2022-05-10 | Huawei Technologies Co., Ltd. | Method and apparatus for determining data feedback resource |
| US11937216B2 (en) | 2017-03-20 | 2024-03-19 | Huawei Technologies Co., Ltd. | Method and apparatus for determining data feedback resource |
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