CN101656778A - Mobile terminal with talkback function and method for implementing same - Google Patents
Mobile terminal with talkback function and method for implementing same Download PDFInfo
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- CN101656778A CN101656778A CN200810041889A CN200810041889A CN101656778A CN 101656778 A CN101656778 A CN 101656778A CN 200810041889 A CN200810041889 A CN 200810041889A CN 200810041889 A CN200810041889 A CN 200810041889A CN 101656778 A CN101656778 A CN 101656778A
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Abstract
The invention discloses a mobile terminal with talkback function and a method for implementing the same. The mobile terminal does not need any additional hardware equipment based on the prior art. Themobile terminal sends a paging message and service information according to a predefined paging message frame structure and a corresponding service channel frame structure; and a receiving terminal detects the paging message every certain frames, searches synchronous information after detecting the paging message, and selects to receive the service information on the service channel according tothe synchronous information so as to implement the talkback communication. The mobile terminal with the talkback function has low cost and convenient use.
Description
Technical field
The present invention relates to wireless communication field, especially relate to a kind of portable terminal and its implementation with intercommunication function.
Background technology
Wireless interspeaker has does not need network support, directly realizes the advantage that communicates between terminal and the terminal.While is along with the development of cordless communication network, portable terminal has become requirement indispensable in the daily life, yet at some in particular cases, people wish to utilize the direct communication between the portable terminal realization terminal, but do not have the support of network, this demand just can not get satisfying.In earthquake disaster, move and wait communication network destroyed, in this case, general use is professional equipments such as satellite phone or intercom now, but these equipment general ordinary people can't obtain, and causes trapped personnel to cry for help, and people also can't form effective rescue action.Correspondingly with it be, in case of emergency, the means of communication that ordinary people's most probable has is the portable terminal mobile phone, but because mobile network's destruction, people have portable terminal in vain and can not cry for help, and the injury that causes earthquake to cause increases greatly.If but stranded personnel under the situation that network can't be supported, portable terminal on hand can directly carry out intercom with the portable terminal in the external world, can bring great help to the rescue personnel like that, and more people in time is rescued.
When a lot of occasions need intercom, because there is not intercom, can only dial one by one by portable terminal, carry out independent writing to each other, can not carry out broadcast communication.Such as fleet's self-driving travel,,, can not cause air interference again just can carry out necessary writing to each other very easily if having intercommunication function toward portable terminal.
The Chinese invention patent application number is 200710130032.3,200410058540.1 patent application a kind of portable terminal with intercom function has all been proposed, but all be to adopt on the basis of original portable terminal, to increase intercom function module realization intercom function, power consumption is bigger, realizes that cost is also than higher.
China's utility application number has proposed a kind of mobile phone utility application with intercom function for the patent application of 03224410.X, describe this portable terminal and had an intercom function button, press this button and just can realize intercommunication function, do not describe concrete implementation method, those skilled in the art can't realize.
In addition Application No. be 09/096210 patent application also proposed a kind of in DECT (Europe rule radio communication standard) method of realization direct communication between handsets, but this method just realizes two communication between terminals, can not realize the broadcast communication of intercom.
The present invention proposes the existing portable terminal of a kind of direct utilization and realize intercom function, do not need to increase extra hardware, realize that cost is lower.
Summary of the invention
Technical problem to be solved by this invention is on the basis of existing portable terminal, do not increase any hardware, by beep-page message frame structure and the corresponding business channel frame structure of making an appointment, realize the intercommunication function between the portable terminal, mainly be in order to ensure emergency communication function such as seek help.
The present invention has disclosed a kind of method that realizes intercommunication function on portable terminal, on the basis of existing common mobile terminal, does not increase any hardware, realizes intercommunication function.Portable terminal sends beep-page message and business information according to predefined beep-page message frame structure and corresponding business channel frame structure, and receiving terminal detects beep-page message, the search synchronizing information, and be chosen in according to synchronizing information and receive business information on the Traffic Channel.
Have synchronizing information in the described beep-page message frame, synchronizing information comprises frame number, group's group number, and indication is encrypted in the channel indication, and the speech data indication information is used for making receiving terminal and sends terminal and carries out synchronously, sets up intercommunication and connects.
Receiving terminal certain frame number at interval detects beep-page message, and this interval frame number in case detect beep-page message, just reads synchronizing information wherein less than the beep-page message frame number, if the synchronizing information of reading then reads business information on the Traffic Channel of agreement.
Described portable terminal is GSM terminal or CDMA terminal, adopts similar method also can realize to the portable terminal of other standards.
Description of drawings
Fig. 1 is a GSM mobile termination beep-page message frame assumption diagram of the present invention;
Fig. 2 is a GSM mobile termination Traffic Channel frame assumption diagram of the present invention;
Fig. 3 is a TD-SCDMA portable terminal beep-page message frame assumption diagram of the present invention;
Fig. 4 is a TD-SCDMA portable terminal Traffic Channel frame assumption diagram of the present invention.
Embodiment
The present invention proposes a kind of portable terminal, in existing GSM/CDMA portable terminal, realize intercom function,, have similar method, no longer describe in detail for the portable terminal of other standards with intercom function.
At first be that example is described implementation method of the present invention with the GSM mobile termination.Gsm system have complete network and terminal synchronously, set up method for communicating, complete speech coding, voice transmit, signaling transmits method are arranged simultaneously.
The present invention continues to use the signal format of GSM fully, make and not pass through the network direct communication between two GSM mobile terminations, that is to say the service that does not need the mobile base station, can carry out direct intercommunication or direct data communication between the GSM mobile handset, and the operation of the intercommunication between the multi-section GSM mobile handset.
Present GSM mobile termination generally all supports 85,0/9,00/,180,0/1,900 4 frequently, as table 1:
| ??850mHz | ??900mHz | ??1800mHz | ??1900mHz | |
| The GSM terminal is sent out | ??824-849mHz | ??880-915mHz | ??1710-1785mHz | ??1850-1910mHz |
| The GSM terminal is received | ??869-894mHz | ??925-960mHz | ??1805-1880mHz | ??1930-1990mHz |
Table 1
From table 1 we 880mHz-894mHz and 1850-1880mHz are the frequency ranges that the GSM terminal not only can have been received but also can send out as can be seen, the present invention just utilizes these two frequency ranges to realize direct communication between the GSM mobile termination, promptly in this band limits, the hardware of GSM mobile handset itself is supported, thereby do not need to increase any hardware cost, just can adopt these frequency ranges to receive and dispatch intercom.
In order between the GSM terminal, to set up intercom mechanism, the present invention proposes a kind of frame structure of paging information, this beep-page message makes receiving-transmitting sides can obtain synchronously, adds addressing function simultaneously, makes receiving terminal can judge whether oneself is paged target terminal.Fig. 1 is an example can realizing beep-page message of the present invention, and each square of 0-220 is represented a GSM signal frame among the figure, and every frame has 8 time slots.Wherein No. 0 frame is the frame that is used for carrying out carrier sense, 1, No. 2 frame free time, to be used for carrying out carrier sense, judge whether it may is the beep-page message of intercommunication, receiving terminal at first carries out primary energy and surveys, analysing energy changes, if find to have burst of energy, then judge to have the intercommunication beep-page message, thereby carry out next step operation.Wherein 1, No. 2 frame free time helps reducing the probability of carrier sense mistake.
Since No. 3 frame to 220 frames, wherein the even numbers frame has the synchronization burst sequence, and the odd numbers frame has the frequency correction sequence.In order to take into account turn-on time and electrical source consumption, selected the beep-page message frame structure of 221 frames here, if longer then turn-on time of definition will be longer, if the weak point of definition, it is more frequent that then standby terminal detects the intercommunication paging, causes more power consumption.Because the GSM paging cycle is generally 102 frames, defines beep-page message frame structure of the present invention and help after receiving twice GSM paging, receiving an intercommunication paging simultaneously, make more power saving of portable terminal.Certainly the beep-page message frame number can set up on their own as required, owing to do not influence realization, it is that example describes that the present invention has selected the beep-page message of 221 frames, the definition of the relevant Traffic Channel in back, and to detect beep-page message definition at interval also be to define accordingly in view of the above, and those skilled in the art can set up above parameter according to the present invention on their own in the industry.
The information of carrying in the synchronization burst comprises:
Frame Number: frame number is used for both sides' frame synchronization.
Group ID: group group number, by the user at interface setting, when the user initiates group call, GroupID=1,2 ..., 200; When the user initiates broadcast ﹠ call, Group ID=0; When the user initiates directed call, Group ID=255; Group ID=201,202 ..., 253,254, reserve.
Channel ID: the channel indication, have 32 prefabricated Traffic Channels (band frequency hopping), select at random by sending side terminal.
Cipher: encrypt indication, call out interface setting by transmit leg, 0 expression is not encrypted, and 1 expression is encrypted.Encryption key is decided through consultation and by the mmi interface setting in advance by communicating pair.
VD: the speech data indication, Voice or Data is 0 during Voice, is 1 during Data.
Above beep-page message is an example, and every 204 frame paging receiving message, the method for paging receiving message is exactly the method for GSM mobile termination synchronising base station to standby terminal on the frequency of appointing, does not carry out detailed description herein.Here adopting every 204 frame paging receiving message is because GSM adopts 102 frames to search the primary network paging, adopts 204 frames to be convenient to realize.Definition for different beep-page message frame lengths, the interval difference of standby terminal paging receiving message, as long as guarantee to be shorter than at interval the duration of beep-page message, that is to say that the interval of 204 frames of definition can change here, as long as guarantee to be shorter than at interval the duration of beep-page message, the purpose of doing like this is that the assurance beep-page message can be received by standby terminal.
Standby terminal is except normal GSM work, and per 204 frames carry out primary energy on control channel surveys, and analysing energy changes, if find to have energy changing, search for synchronization burst, at once if search synchronization burst, and, enter accepting state or continue standby according to synchronization burst information.
The flow process of setting up communication between the GSM terminal is as follows:
The main terminal of exhaling is selected the intercommunication pattern, sets the group number that will call out, sends paging according to the beep-page message that defines;
Standby terminal is received beep-page message, judges according to group's group number in the synchronizing information whether oneself is paged target terminal, if then become receiving terminal, otherwise continue standby;
Become the transmission terminal after the master exhales terminal to send paging, and according to the Traffic Channel of oneself selecting, last Traffic Channel sends voice/data.
Receiving terminal is according to the indication of the Traffic Channel in the beep-page message, and last Traffic Channel receives voice/data.
Traffic Channel of the present invention is defined as follows, and below is an example of catching up with the Traffic Channel of face beep-page message coupling:
Traffic Channel is GSM 26 multi-frame structures since 221 frames, i.e. paging finishes just to begin Traffic Channel, as Fig. 2, wherein:
T:Traffic Channel Frame transmits N-Normal Burst.
I: free time.
Send the terminal transmission and finish, stop at and send signal on the Traffic Channel, receiving terminal finds there is not signal, stops to receive, and both sides all get back to the standby terminal state, waits for the foundation of communication next time.
As seen from the above description, the present invention continues to use the signal format of GSM, makes can not pass through the network direct communication between two GSM mobile terminations, thereby can carry out direct intercommunication or direct data communication.The present invention does not need to increase hardware device, just can realize direct communication function between the GSM mobile termination.The present invention has low cost, advantage of low power consumption.
Below be that example is described method of the present invention with the TD-SCDMA terminal, on the TD-SCDMA portable terminal, making between the TD-SCDMA portable terminal can direct communication, realizes intercommunication function and direct SMS:
The TD-SCDMA system have complete network and terminal synchronously, set up method for communicating, complete speech coding, voice transmit, signaling transmits method are arranged simultaneously.
The present invention continues to use the signal format of TD-SCDMA fully, makes can not pass through the network direct communication between two TD-SCDMA portable terminals, thereby can carry out direct intercommunication or direct data communication.
At first on the frequency range that adopts, because same frequency range is used in the TD-SCDMA up-downgoing, so transmit-receive cofrequency is unquestionable fully.
In order between the TD-SCDMA terminal, to set up intercom mechanism, the present invention proposes a kind of frame structure beep-page message of paging information, this beep-page message makes receiving-transmitting sides can obtain synchronously, adds addressing function simultaneously, makes to judge whether oneself is paged target terminal.Fig. 3 is an example can realizing beep-page message of the present invention:
Each square of 0-59 is represented a signal frame among the figure, and every frame has 4 subframes, and each subframe is divided into 7 time slots and a DwPTS+GP.DwPTS adopts the signal format of TD-SCDMA system definition, and the system burst structure among the TD-SCDMA is adopted in the burst that sends among the TS0, and is idle among the TS1-TS6.Transmit SYNC_DL in DwPTS, the TDS-CDMA system has 32 SYNC_DL, and the present invention selects wherein four arbitrarily for use, called after SYNC_DL_A, SYNC_DL_B, SYNC_DL_C, SYNC_DL_D, respectively at #4i, #4i+1, #4i+2 transmits in the #4i+3 subframe, could locate #4i at the standby end like this, #4i+1, #4i+2, #4i+3, i.e. block boundary.
Comprise the subframe numbers SFN (SubFrame Number) of subframe # 4i+3 and Group ID, Channel ID, Cipher ID, spreading code, scrambler etc. in the entrained data of 4 TS0 of subframe # 4i-#4i+3.
Above beep-page message is an example, and every 50 frame paging receiving message, the method for paging receiving message is exactly the method for TD-SCDMA portable terminal synchronising base station to standby terminal on the frequency of appointing, does not carry out detailed description herein.Different beep-page message definition, the interval difference of standby terminal paging receiving message, as long as guarantee to be shorter than at interval the duration of beep-page message, that is to say that the interval of 50 frames of definition can change here, as long as guarantee to be shorter than at interval the duration of beep-page message, the purpose of doing like this is that the assurance beep-page message can be received by standby terminal.
The flow process of setting up communication between the TD-SCDMA terminal is as follows:
The main terminal of exhaling is selected the intercommunication pattern, sets the call group group number, sends paging according to the beep-page message that defines;
Standby terminal is received beep-page message, judges according to group's group number in the synchronizing information whether oneself is paged target terminal, if then become receiving terminal, otherwise continue standby;
Become the transmission terminal after the master exhales terminal to send paging, and according to the Traffic Channel of oneself selecting, last Traffic Channel sends voice/data;
Receiving terminal is according to the indication of the Traffic Channel in the beep-page message, and last Traffic Channel receives voice/data.
Below be an example of catching up with the Traffic Channel of face beep-page message coupling:
Traffic Channel is since 60 frames, as Fig. 4:
Transmit the system burst structure among the TD-SCDMA among the TSO, idle among the TS1-TS6.Voice or data transmit by TS0.
Send the terminal transmission and finish, stop at and send signal on the Traffic Channel, receiving terminal finds there is not signal, stops to receive, and both sides all get back to the standby terminal state, waits for the foundation of communication next time.
As seen from the above description, the present invention continues to use the signal format of TD-SCDMA, makes can not pass through the network direct communication between two TD-SCDMA portable terminals, thereby can carry out direct intercommunication or direct data communication.The present invention does not need to increase hardware device, just can realize direct communication function between the TD-SCDMA portable terminal.The present invention has low cost, advantage of low power consumption.
Intercommunication function can be realized half-duplex and full-duplex mode in the portable terminal that the present invention realizes, method of calling is by broadcast ﹠ call, and group call and directed call according to the difference that group's group number is provided with, are carried out different mode of operations.Business comprises the voice-and-data business.Different with half-duplex employing full-speed voice coding is, speech coding adopts semi-velocity speech coding when carrying out the full duplex speech business, Traffic Channel becomes two half rates simultaneously, article one, be used for exhaling end to exhale end to transmit voice to quilt, another is used for being exhaled end to exhale end to transmit voice to the master.
For fear of people the present invention is enlarged application, the method for limiting of this portable terminal intercommunication function of multiple startup can be set, for example only under the situation that detects repeatedly wireless network signal (GSM/CDMA) failure, start intercommunication function, or after sales department of operator opens smart card (SIM card etc.) intercommunication function, just have the function that realizes intercom, the button that starts the intercommunication pattern or menu or the like method perhaps directly is set on portable terminal.
In the intercommunication pattern of direct communication between portable terminal, in order to reduce power consumption penalty, receiving terminal is judged the physical link failure under the situation that continuous three times received signal quality is the poorest, come back to holding state.
The present invention does not need to increase extra hardware, just can make the portable terminal that generally uses have the function of emergency communication, under special situation, will produce the huge social effect.
Claims (32)
1. a method that realizes intercommunication function on portable terminal on the basis of existing common mobile terminal, does not increase any hardware, realizes intercommunication function, it is characterized in that:
Send starting terminal intercommunication pattern, in the intercommunication beep-page message, issue synchronizing information, issuing service information on the intercommunication Traffic Channel;
Receiving terminal detects beep-page message, the search synchronizing information;
Receiving terminal is chosen in according to synchronizing information and receives business information on the Traffic Channel or continue standby.
2. a kind of method that realizes intercommunication function on portable terminal as claimed in claim 1, it is characterized in that: described portable terminal is a GSM mobile termination.
3. a kind of method that on portable terminal, realizes intercommunication function as claimed in claim 2, it is characterized in that: have the carrier sense burst in the described beep-page message frame, frequency correction burst and synchronization burst, described synchronization burst is used for sending described synchronizing information.
4. a kind of method that on portable terminal, realizes intercommunication function as claimed in claim 3, it is characterized in that: described synchronizing information comprises frame number, group's group number, the channel indication is encrypted indication, the speech data indication information.
5. a kind of method that realizes intercommunication function on portable terminal as claimed in claim 2, it is characterized in that: described beep-page message frame is 221 frame multi-frame structures.
6. a kind of method that realizes intercommunication function on portable terminal as claimed in claim 2, it is characterized in that: the frame number of described receiving terminal fixed interval detects beep-page message.
7. a kind of method that realizes intercommunication function on portable terminal as claimed in claim 6, it is characterized in that: described fixing frame number is less than described beep-page message frame number.
8. a kind of method that realizes intercommunication function on portable terminal as claimed in claim 6, it is characterized in that: described fixing frame number is 204 frames.
9. a kind of method that realizes intercommunication function on portable terminal as claimed in claim 2, it is characterized in that: described Traffic Channel is 26 multi-frame structures since the 221st frame.
10. a kind of method that realizes intercommunication function on portable terminal as claimed in claim 2 is characterized in that: described portable terminal uses 880mHz-894mHz and 1850-1880mHz frequency range to carry out intercom.
11. a kind of method that realizes intercommunication function on portable terminal as claimed in claim 1, it is characterized in that: described portable terminal is the TD-SCDMA portable terminal.
12. a kind of method that realizes intercommunication function on portable terminal as claimed in claim 11, it is characterized in that: described beep-page message frame has 60 signal frames, and each signal frame has 4 subframes, and each subframe is divided into 7 time slot TS0-TS6 and a DwPTS+GP.
13. a kind of method that on portable terminal, realizes intercommunication function as claimed in claim 12, it is characterized in that: described DwPTS adopts the signal format of TD-SCDMA system definition, the system burst structure among the TD-SCDMA is adopted in the burst that sends among the TS0, and is idle among the TS1-TS6.
14. a kind of method that realizes intercommunication function on portable terminal as claimed in claim 12 is characterized in that: comprise subframe numbers in the entrained data of 4 TS0 of described signal frame, group's group number, channel indication are encrypted indication, spreading code, scrambler.
15. a kind of method that realizes intercommunication function on portable terminal as claimed in claim 11 is characterized in that: described standby terminal on the frequency of appointing every 50 signal frame paging receiving message.
16. a kind of method that on portable terminal, realizes intercommunication function as claimed in claim 11, it is characterized in that: described Traffic Channel is since the 60th signal frame, transmit the system burst structure among the TD-SCDMA among the TS0, idle among the TS1-TS6, business information transmits by TS0.
17. the portable terminal with intercommunication function on the basis of existing common mobile terminal, does not increase any hardware, realizes intercommunication function, it is characterized in that: described portable terminal has beep-page message and the corresponding business channel that is used for intercommunication.
18. a kind of portable terminal with intercommunication function as claimed in claim 17 is characterized in that: described portable terminal is the GSM terminal.
19. a kind of portable terminal with intercommunication function as claimed in claim 18 is characterized in that: have the carrier sense burst in the described beep-page message frame, frequency correction burst and synchronization burst, described synchronization burst is used for sending described synchronizing information.
20. a kind of portable terminal with intercommunication function as claimed in claim 19 is characterized in that: described synchronization burst information comprises frame number, group's group number, and the channel indication is encrypted indication, the speech data indication information.
21. a kind of portable terminal with intercommunication function as claimed in claim 18 is characterized in that: described beep-page message frame is 221 frames.
22. a kind of portable terminal with intercommunication function as claimed in claim 18, it is characterized in that: the frame number of described portable terminal fixed interval detects beep-page message.
23. a kind of portable terminal with intercommunication function as claimed in claim 22 is characterized in that: described fixing frame number is less than described beep-page message frame number.
24. a kind of portable terminal with intercommunication function as claimed in claim 22 is characterized in that: described fixing frame number is 204 frames.
25. a kind of portable terminal with intercommunication function as claimed in claim 18 is characterized in that: described Traffic Channel is 26 multi-frame structures since the 221st frame.
26. a kind of portable terminal with intercommunication function as claimed in claim 17 is characterized in that: described portable terminal is the TD-SCDMA terminal.
27. a kind of portable terminal with intercommunication function as claimed in claim 26 is characterized in that: described beep-page message frame has 60 signal frames, each signal frame has 4 subframes, and each subframe is divided into 7 time slot TS0-TS6 and a DwPTS+GP.
28. a kind of portable terminal as claimed in claim 27 with intercommunication function, it is characterized in that: described DwPTS adopts the signal format of TD-SCDMA system definition, the system burst structure among the TD-SCDMA is adopted in the burst that sends among the TS0, and is idle among the TS1-TS6.
29. a kind of portable terminal with intercommunication function as claimed in claim 27 is characterized in that: comprise subframe numbers in the entrained data of 4 TS0 of described signal frame, group's group number, channel indication are encrypted indication, spreading code, scrambler.
30. a kind of portable terminal with intercommunication function as claimed in claim 26 is characterized in that: described portable terminal on the frequency of appointing every 50 signal frame paging receiving message.
31. a kind of portable terminal as claimed in claim 26 with intercommunication function, it is characterized in that: described Traffic Channel is since the 60th signal frame, transmit the system burst structure among the TD-SCDMA among the TS0, idle among the TS1-TS6, business information transmits by TS0.
32. a kind of portable terminal as claimed in claim 17 with intercommunication function, it is characterized in that: described portable terminal intercommunication function has two kinds of working methods of full and half duplex, described full duplex mode of operation adopts semi-velocity speech coding, and the full-speed voice coding is adopted in described half-duplex.
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| CN200810041889A CN101656778A (en) | 2008-08-20 | 2008-08-20 | Mobile terminal with talkback function and method for implementing same |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102752431A (en) * | 2012-06-29 | 2012-10-24 | 武汉钢铁(集团)公司 | Method for achieving voice intercom of Android mobile phone |
| CN107005394A (en) * | 2014-12-05 | 2017-08-01 | 主导技术有限公司 | Communication and data processing in the mesh network using duplex radio |
| US10568155B2 (en) | 2012-04-13 | 2020-02-18 | Dominant Technologies, LLC | Communication and data handling in a mesh network using duplex radios |
-
2008
- 2008-08-20 CN CN200810041889A patent/CN101656778A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10568155B2 (en) | 2012-04-13 | 2020-02-18 | Dominant Technologies, LLC | Communication and data handling in a mesh network using duplex radios |
| US11310850B2 (en) | 2012-04-13 | 2022-04-19 | Dominant Technologies, LLC | Communication in a mesh network using duplex radios with multichannel listen capabilities |
| US11770868B2 (en) | 2012-04-13 | 2023-09-26 | Dominant Technologies, LLC | Communication in a mesh network using multiple configurations |
| US12052781B2 (en) | 2012-04-13 | 2024-07-30 | Dominant Technologies, LLC | Data-embedded voice communication in a mesh network |
| CN102752431A (en) * | 2012-06-29 | 2012-10-24 | 武汉钢铁(集团)公司 | Method for achieving voice intercom of Android mobile phone |
| CN102752431B (en) * | 2012-06-29 | 2015-11-18 | 武汉钢铁(集团)公司 | A kind of method realizing voice intercom of Android mobile phone |
| CN107005394A (en) * | 2014-12-05 | 2017-08-01 | 主导技术有限公司 | Communication and data processing in the mesh network using duplex radio |
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Application publication date: 20100224 |