CN101090310B - Semi-duplex communication method of digital centerless communication system - Google Patents
Semi-duplex communication method of digital centerless communication system Download PDFInfo
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- CN101090310B CN101090310B CN2006100275705A CN200610027570A CN101090310B CN 101090310 B CN101090310 B CN 101090310B CN 2006100275705 A CN2006100275705 A CN 2006100275705A CN 200610027570 A CN200610027570 A CN 200610027570A CN 101090310 B CN101090310 B CN 101090310B
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Abstract
This invention discloses a semi-duplex communication method for the digital center-free communication system including: the communication method refers to that a calling end and a called end carry out semi-duplex communication by a single channel, the called end receives signaling in an appointed channel after it receives paging signaling and is forbidden to transmit it, the calling end transmits session end instruction to inform the called to begin talking after it transmits the signaling and keeps a preengaged channel during the session interval by sending the instruction and the called end can make phone calls only after it receives the end instruction.
Description
Technical field
The present invention relates to the half-duplex implementation method of communication system, relate in particular to the half-duplex operation method of a kind of digital no center communication system.
Background technology
Do not have in the communication system of center in numeral, network is a full-mesh.Can realize direct communication between any two terminals, not have the control of Centroid in the communication process.And should numeral do not have the center communication system and be based on time-multiplexed digital communication system, have certain structure of time slot.Usually only distribute a time slot on certain frequency between two terminals of this communication system, transmit,, influenced the scope of application of system the function of limiting telecommunication system greatly if only carry out unidirectional information.
Summary of the invention
The objective of the invention is to address the above problem, the half-duplex operation method of a kind of digital no center communication system is provided, it has realized the half-duplex operation between two terminals, has effectively utilized channel resource, has reduced the complexity of system.
Technical scheme of the present invention is: the half-duplex operation method of a kind of digital no center communication system, and calling terminal and called end carry out half-duplex operation by single channel, wherein, comprising:
(1) calling terminal paging, the paging of called end search self correspondence;
(2) after called end receives the paging of self correspondence, set up the preparation of communicating by letter with calling terminal;
(3) calling terminal sends information to called end by a channel, and this moment, called end was under an embargo transmission information to calling terminal;
(4) after calling terminal transmission information is finished, send end of conversation and indicate to called end;
(5) called end receives that described end of conversation indication back sends information to calling terminal by described same channel, and this moment, calling terminal was under an embargo transmission information to called end;
(6) after called end transmission information is finished, send end of conversation and indicate to calling terminal;
(7) calling terminal and called end are according to above-mentioned steps wheel stream communication or directly finish calling terminal and the communicating by letter of called end between sending and receiving.
Above-mentioned numeral does not have the half-duplex operation method of center communication system, and wherein, in the step (1), calling terminal is sent to called end by control channel with call signaling and synchronous signaling.
Above-mentioned numeral does not have the half-duplex operation method of center communication system, and wherein, described call signaling middle finger is shown with the Traffic Channel that calling terminal is communicated by letter with called end.
Above-mentioned numeral does not have the half-duplex operation method of center communication system, and wherein, step (2) comprising:
(2.1) called end forwards on the Traffic Channel of described call signaling indication after receiving the paging of self correspondence;
(2.2) called end transmission paging is confirmed to calling terminal;
(2.3) calling terminal is received the paging that stops after this paging is confirmed on the control channel.
Above-mentioned numeral does not have the half-duplex operation method of center communication system, wherein, in the step (4), calling terminal sends end of conversation and indicates to needing to wait for replying of called end behind the called end, if do not receive called party answer, calling terminal will send end of conversation with the fixed cycle and indicate to called end to indicate described channel current occupied, if receive that the called party answer calling terminal will stop to send immediately.
Above-mentioned numeral does not have the half-duplex operation method of center communication system, wherein, if calling terminal is not received called party answer for a long time, can select paging once more or stop to send end of conversation to indicate and discharge described channel.
Above-mentioned numeral does not have the half-duplex operation method of center communication system, wherein, in the step (6), called end sends end of conversation and indicates to needing to wait for replying of calling terminal behind the calling terminal, if not receiving caller replys, called end will send end of conversation with the fixed cycle and indicate to calling terminal indicating described channel current occupied, reply called end and will stop immediately sending if receive caller.
Above-mentioned numeral does not have the half-duplex operation method of center communication system, wherein, if called end does not receive that for a long time caller replys, can select paging once more or stop to send end of conversation to indicate and discharge described channel.
Above-mentioned numeral does not have the half-duplex operation method of center communication system, and wherein, under called end was under an embargo the situation of transmission information to calling terminal in the step (3), the called end terminal was shown as conversation and forbids; Under calling terminal was under an embargo the situation of transmission information to called end in the step (5), the calling terminal terminal was shown as conversation and forbids.
Above-mentioned numeral does not have the half-duplex operation method of center communication system, and wherein, described digital no center communication system is based on time-multiplexed digital communication system, has certain structure of time slot.
The present invention contrasts prior art following beneficial effect: in the method for the invention, called end receives at allocated channel after receiving call signaling, and the called end oneself forbids sending simultaneously.Calling terminal transmission finishing back is indicated by the transmission end of conversation and is notified called end can begin conversation.Called end just can be conversed after only receiving this end indication.Avoid transmitting-receiving conflict in the communication system of digital no center by method of the present invention between two communication terminals, effectively utilized channel resource, realized a kind of communication system of distributed control type.
Description of drawings
Fig. 1 is the signaling process figure of a terminal communication embodiment of the present invention.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 shows the signaling process of a terminal communication embodiment of the present invention.Seeing also Fig. 1, is that numeral is not had calling terminal and called end in the communication system of center carry out the method flow of half-duplex operation by single channel detailed description below.Following method is based upon on the basis that this communication system is the time division multiplexing digital communication system.
Settling time is synchronous between calling terminal and called end.Control information is distributed on the different frequencies with business information, is called control frequency and business frequency.Wherein comprise synchronizing information in the control information.
At first calling terminal carries out paging.Paging is implemented as follows: calling terminal is monitored each business frequency earlier when setting up communication, selects idle frequency as business frequency, chooses to monitor behind the business frequency and controls frequency.If the control frequency free time, calling terminal will send paging information and synchronizing information behind the random delay of certain time slot on the control frequency.This paging information middle finger is shown with the Traffic Channel that calling terminal is communicated by letter with called end.This synchronizing information takies certain timeslot number, comprises the timeslot number and the business frequency of synchronous code, caller radio station call sign sign indicating number, called radio station call sign sign indicating number and agreement.
Called end cycle detection call signaling then.Be implemented as follows: be sleep state when called end is general, periodically wake up, the Monitoring and Controlling frequency, whether search has signal.If any then receiving and solve synchronous code, detect the radio station call sign sign indicating number then, if there is not the radio station call sign sign indicating number of oneself, continue sleep; If the calling of self correspondence arranged then set up the preparation of communicating by letter with calling terminal.
Above-mentioned communication prepares specifically to comprise: called end is transferred on the indicated Traffic Channel of call signaling.At first called end sends one group " paging affirmation ", and notice calling terminal (being transmit leg) has been ready to reception information.Calling terminal receives to stop at after " paging affirmation " on the control frequency and sends paging and synchronizing information, and begins by the indicated Traffic Channel of call signaling to called end (being the recipient) transmission information.
Communicating by letter of following calling terminal and called end carried out in half semiduplex mode, and half semiduplex switching is arranged with signaling.
Calling terminal on the Traffic Channel when called end sends information, called end is forbidden that automatically transmission information is to calling terminal.That is to say that during this period of time the information on this Traffic Channel can only be to be sent to called end from calling terminal.Be shown as " conversation is forbidden " this moment in the terminal demonstration (man-machine interface) of called end.
Calling terminal is after called end transmission information is finished, and calling terminal sends end of conversation and indicates to called end.Called end should echo reply information after receiving the indication of this end of conversation to calling terminal.If calling terminal is not received called party answer, then will be interrupted the transmission end of conversation and indicate to called end to keep the Traffic Channel of current use with the fixed cycle.If receiving called party answer, calling terminal will stop immediately sending the end of conversation indication toward called end.If calling terminal can't be received called party answer for a long time, can select once more called end to be carried out paging or stop to send end of conversation indicating the Traffic Channel that discharges current use.
Stopping to send end of conversation after calling terminal is received called party answer indicates to called end.Called end uses current Traffic Channel to send information to calling terminal, and this moment, calling terminal was under an embargo transmission information to called end.Be shown as " conversation is forbidden " in the terminal demonstration (man-machine interface) of calling terminal.
Similarly, called end is after calling terminal transmission information is finished, and called end sends end of conversation and indicates to calling terminal.Calling terminal should echo reply information after receiving the indication of this end of conversation to called end.If called end does not receive that caller replys, will be interrupted sending end of conversation and indicate to calling terminal with the fixed cycle to keep the Traffic Channel of current use.If called end is received that caller is replied and will stop immediately being sent the end of conversation indication toward calling terminal.If called end can't receive that for a long time caller replys, can select once more calling terminal to be carried out paging or stop to send end of conversation indicating the Traffic Channel that discharges current use.
After one of calling terminal and called end taken turns intercommunication mutually,, can repeat the communication that said process carries out many wheels if needs are arranged.If need to finish immediately, then directly finish communicating by letter of calling terminal and called end, stop to send all signals, directly discharge shared channel.
Lift below an example illustrate above-mentioned caller and called between half-duplex operation.For example, after finishing, the caller mobile phone communication unclamps talk button, the caller mobile phone will add some " end of conversation indication frames " automatically after the last frame data that transmit, before not receiving called party answer, it is occupied with the channel of indicating current use to be interrupted transmission " end of conversation indication frame " with the fixed cycle.Stop immediately sending after receiving called party answer.Do not receive that for a long time called party answer can select paging once more or stop to send " end of conversation indication frame " to discharge channel.When the caller mobile phone continues to send, called mobile phone is shown as " conversation is forbidden ", called mobile phone is received caller mobile phone " end of conversation indication frame ", and this indication frame to called mobile phone indication " can converse ", can be conversed behind the called mobile phone press-to-talk button on man-machine interface.Unclamp talk button after incoming call finishes, the inside performing step of back and aforementioned similar is not repeated in this description at this.Just can between both call sides, realize half-duplex operation with such method.Behind talk-through, stop to send all signals, directly discharge shared channel.
Should be understood that then communication process is finished automatically by transceiver terminal fully if business information is data service.
The foregoing description provides to those of ordinary skills and realizes or use of the present invention; those of ordinary skills can be under the situation that does not break away from invention thought of the present invention; the foregoing description is made various modifications or variation; thereby protection scope of the present invention do not limit by the foregoing description, and should be the maximum magnitude that meets the inventive features that claims mention.
Claims (9)
1. the half-duplex operation method of a digital no center communication system, calling terminal and called end carry out half-duplex operation by single channel, it is characterized in that, comprising:
(1) calling terminal paging, the paging of called end search self correspondence;
(2) after called end receives the paging of self correspondence, set up the preparation of communicating by letter with calling terminal;
(3) calling terminal sends information to called end by a channel, and this moment, called end was under an embargo transmission information to calling terminal;
(4) after calling terminal transmission information is finished, sending end of conversation indicates to called end, wait for replying of called end then, if do not receive called party answer, calling terminal will send end of conversation with the fixed cycle and indicate to called end to indicate described channel current occupied, if receive that the called party answer calling terminal will stop to send immediately;
(5) called end receives that described end of conversation indication back sends information to calling terminal by described channel, and this moment, calling terminal was under an embargo transmission information to called end;
(6) after called end transmission information is finished, send end of conversation and indicate to calling terminal;
(7) calling terminal and called end are according to above-mentioned steps wheel stream communication or directly finish calling terminal and the communicating by letter of called end between sending and receiving.
2. the half-duplex operation method of digital no center according to claim 1 communication system is characterized in that in the step (1), calling terminal is sent to called end by control channel with call signaling and synchronous signaling.
3. the half-duplex operation method of digital no center according to claim 2 communication system is characterized in that described call signaling middle finger is shown with the Traffic Channel that calling terminal is communicated by letter with called end.
4. the half-duplex operation method of digital no center according to claim 3 communication system is characterized in that step (2) comprising:
(2.1) called end forwards on the Traffic Channel of described call signaling indication after receiving the paging of self correspondence;
(2.2) called end transmission paging is confirmed to calling terminal;
(2.3) calling terminal is received the paging that stops after this paging is confirmed on the control channel.
5. the half-duplex operation method of digital no center according to claim 1 communication system is characterized in that, if calling terminal is not received called party answer for a long time, can select paging once more or stop to send end of conversation to indicate and discharge described channel.
6. the half-duplex operation method of digital no center according to claim 1 communication system, it is characterized in that, in the step (6), called end sends end of conversation and indicates to needing to wait for replying of calling terminal behind the calling terminal, if not receiving caller replys, called end will send end of conversation with the fixed cycle and indicate to calling terminal indicating described channel current occupied, reply called end and will stop immediately sending if receive caller.
7. the half-duplex operation method of digital no center according to claim 6 communication system is characterized in that, if called end does not receive that for a long time caller replys, can select paging once more or stop to send end of conversation to indicate and discharge described channel.
8. the half-duplex operation method of digital no center according to claim 1 communication system is characterized in that, under called end was under an embargo the situation of transmission information to calling terminal in the step (3), the called end terminal was shown as conversation and forbids; Under calling terminal was under an embargo the situation of transmission information to called end in the step (5), the calling terminal terminal was shown as conversation and forbids.
9. the half-duplex operation method of digital no center according to claim 1 communication system is characterized in that, described digital no center communication system is based on time-multiplexed digital communication system, has certain structure of time slot.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2006100275705A CN101090310B (en) | 2006-06-12 | 2006-06-12 | Semi-duplex communication method of digital centerless communication system |
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| CN2006100275705A CN101090310B (en) | 2006-06-12 | 2006-06-12 | Semi-duplex communication method of digital centerless communication system |
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| CN101090310A CN101090310A (en) | 2007-12-19 |
| CN101090310B true CN101090310B (en) | 2011-06-01 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103079171B (en) * | 2012-12-28 | 2017-12-01 | 侯荣涛 | A kind of non-stop layer command dispatching and communication system and its call processing method |
| CN106230538B (en) * | 2016-07-28 | 2018-08-24 | 浙江天则通信技术有限公司 | A kind of point-to-point time-division two-way wireless communication method of single carrier |
| CN109787936B (en) * | 2017-11-14 | 2021-06-29 | 中国电信股份有限公司 | Voice talkback method, talkback terminal and communication system |
| CN111263012B (en) * | 2020-01-17 | 2021-08-27 | 西安迪科数金智能科技有限公司 | Digital centerless calling system and method |
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| CN1419384A (en) * | 1996-06-07 | 2003-05-21 | 夸尔柯姆股份有限公司 | Method and device for realizing idle switching in multi-address communication system |
| CN1571536A (en) * | 2003-07-19 | 2005-01-26 | 华为技术有限公司 | Method for implementing half-duplex IP voice communication |
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| CN1419384A (en) * | 1996-06-07 | 2003-05-21 | 夸尔柯姆股份有限公司 | Method and device for realizing idle switching in multi-address communication system |
| CN1571536A (en) * | 2003-07-19 | 2005-01-26 | 华为技术有限公司 | Method for implementing half-duplex IP voice communication |
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| 苗裕等.一种低功耗半双工无线话音通信器的实现.电声技术 2005年第8期.2005,(2005年第8期),39-42. |
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Effective date of registration: 20180403 Address after: The 300456 Tianjin FTA test area (Dongjiang Bonded Port) No. 6865 North Road, 1-1-1802-7 financial and trade center of Asia Patentee after: Xinji Lease (Tianjin) Co.,Ltd. Address before: 201203 Shanghai city Pudong New Area Songtao Road No. 696 3-4 floor Patentee before: SPREADTRUM COMMUNICATIONS (SHANGHAI) Co.,Ltd. |
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Application publication date: 20071219 Assignee: SPREADTRUM COMMUNICATIONS (SHANGHAI) Co.,Ltd. Assignor: Xinji Lease (Tianjin) Co.,Ltd. Contract record no.: 2018990000196 Denomination of invention: Semi-duplex communication method of digital centerless communication system Granted publication date: 20110601 License type: Exclusive License Record date: 20180801 |
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Effective date of registration: 20221025 Address after: 201203 Shanghai city Zuchongzhi road Pudong New Area Zhangjiang hi tech park, Spreadtrum Center Building 1, Lane 2288 Patentee after: SPREADTRUM COMMUNICATIONS (SHANGHAI) Co.,Ltd. Address before: 300456 1-1-1802-7, north area of financial and Trade Center, No. 6865, Asia Road, Tianjin pilot free trade zone (Dongjiang Bonded Port Area) Patentee before: Xinji Lease (Tianjin) Co.,Ltd. |
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