CN103281781B - The implementation method of a kind of private network communication terminal and private network communication - Google Patents
The implementation method of a kind of private network communication terminal and private network communication Download PDFInfo
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- CN103281781B CN103281781B CN201310135929.0A CN201310135929A CN103281781B CN 103281781 B CN103281781 B CN 103281781B CN 201310135929 A CN201310135929 A CN 201310135929A CN 103281781 B CN103281781 B CN 103281781B
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Abstract
The present invention relates to the communication technology, in prior art because the position of unappropriated time slot cannot be determined in advance thus another time slot cannot be utilized to initiate the defect of another road independence private network communication, the implementation method of a kind of private network communication terminal and private network communication is provided.Private network communication terminal comprises receiver, reflector and monitoring module, and for determining the time slot shared by the private network communication that receiver receives, and control transmitter makes response by this time slot to the private network communication that this receives; And monitoring free timeslot, and control transmitter initiates private network communication by the free timeslot listened to.Present invention also offers a kind of implementation method of private network communication.One road private network communication is limited to and the time slot that in DMR time division multiple access frame, position is fixing can only be used to carry by the present invention, make other mobile communication terminal having neither part nor lot in private network communication can determine unappropriated time slot in advance, thus this unappropriated time slot can be utilized to initiate new private network communication.
Description
The divisional application that the application is the applying date is on September 28th, 2008, national applications number is 200880002212.6, denomination of invention is the Chinese patent application of " implementation method of a kind of private network communication terminal and private network communication ".
Technical field
The present invention relates to private network communication technology, more particularly, relate to the implementation method of a kind of private network communication terminal and private network communication.
Background technology
DMR(DigitalMobileRadio, digital mobile radio) standard is ETSI(EuropeanTelecommunicationsStandardsInstitute, ETSI) recently promulgate for alternative simulation PMR(PrivateMobileRadio, private mobile radio) European standard, it has the plurality of advantages such as coverage is large, transmission rate is high, spectrum efficiency is high, good energy-conserving effect, and the mobile communication product therefore based on DMR standard is widely had an optimistic view of by market.
DMR standard adopts the time division multiple access frame structure of two time slot.Fig. 1 is the structural representation of DMR time division multiple access frame under direct mode operation.So-called direct mode operation, namely between communication terminal without the need to by intermediate station then direct communication each other.As shown in Figure 1, DMR time division multiple access frame comprises two identical time slots, and the length of each time slot is 30ms, and is divided into the identical load of two length by sync pattern field placed in the middle further.Each time slot is respectively provided with the protection interval that a length is 1.25ms at head and the tail two ends, be spaced apart 2.5ms therefore between two time slots.
But, under direct communication pattern (hereinafter referred direct mode operation), how to use in frame two time slots to support two-way independently audio call because DMR standard does not define further, therefore the existing private network communication terminal based on DMR standard still can only use a time slot in frame to carry out audio call simultaneously.Fig. 2 is the schematic diagram of the applied environment 200 of the existing private network communication terminal based on DMR standard.As shown in Figure 2, in applied environment 200, there is multiple stage private network communication terminal 202 ~ 208.Wherein, private network communication terminal 202 carries out audio call with private network communication terminal 204.Although the audio call between private network communication terminal 202 and private network communication terminal 204 only takies a time slot in DMR time division multiple access frame, the private network communication terminal 206 in same geographic area and private network communication terminal 208 still cannot use another time slot to carry out audio call.
The reason producing the problems referred to above is, although the audio call between private network communication terminal 202 and private network communication terminal 204 only takies a time slot, but because occupied time slot position is unfixing (namely, occupied time slot both may be the previous time slot in DMR time division multiple access frame, it may be again the rear time slot in DMR time division multiple access frame, it is used by the answer party Stochastic choice of audio call completely), make other private network communication terminal being positioned at same geographic area cannot determine which time slot unappropriated time slot is in advance, so also just new audio call cannot be initiated.
Therefore, need a kind of technical scheme, the defect that prior art exists can be overcome.
Summary of the invention
The technical problem to be solved in the present invention is, for in prior art because occupied time slot position does not fixedly cause the position that cannot determine unappropriated time slot in advance thus another time slot cannot be utilized to initiate the defect of another road independent voice calling, the implementation method of a kind of private network communication terminal and voice communication is provided.
The technical solution adopted for the present invention to solve the technical problems is:
The invention provides a kind of private network communication terminal, for making response to the private network communication received and initiate private network communication under direct mode operation, comprise receiver and reflector, described private network communication terminal also comprises:
Monitor module, itself and described receiver and described reflector communicate to connect, for:
Determine the time slot shared by the private network communication that described receiver receives, and control described reflector, by this time slot, response is made to the private network communication that this receives;
Monitor the free timeslot in DMR time division multiple access frame, and control the free timeslot initiation private network communication of described reflector by listening to; And
When not hearing described DMR time division multiple access frame, controlling described reflector and directly initiating private network communication.
In private network communication terminal provided by the invention, described receiver receives the private network communication according to DMR standard;
Described reflector makes response and initiation private network communication according to DMR standard to the private network communication received.
In private network communication terminal provided by the invention, described monitoring module monitors the free timeslot in DMR time division multiple access frame by carrier sense mode.
Present invention also offers a kind of implementation method of private network communication, for making response to the private network communication received and initiate private network communication under direct mode operation, comprising:
Determine the time slot shared by private network communication received, and by this time slot, the private network communication that this receives is made to the step of response;
Monitor the free timeslot in DMR time division multiple access frame, and initiate the step of private network communication by the free timeslot listened to; And
The step of private network communication is directly initiated when not hearing described DMR time division multiple access frame.
In the implementation method of private network communication provided by the invention, the step that the described private network communication to receiving makes response comprises further, makes response according to DMR standard to the private network communication received;
The step of described initiation private network communication comprises further, initiates private network communication according to DMR standard.
In the implementation method of private network communication provided by the invention, the step of the free timeslot in described monitoring DMR time division multiple access frame comprises the free timeslot monitored by carrier sense mode in DMR time division multiple access frame further.
Implement technical scheme of the present invention, there is following beneficial effect, the answer party of private network communication is replied by using the time slot shared by the private network communication that receives, one road private network communication is limited at the time slot that in DMR time division multiple access frame, position is fixing can only be used to carry, this just makes other private network communication terminal having neither part nor lot in private network communication can determine unappropriated time slot in advance, thus this unappropriated time slot can be utilized to initiate new private network communication, improve the utilance of channel.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the structural representation of existing DMR time division multiple access frame;
Fig. 2 is the schematic diagram of the applied environment of the existing private network communication terminal based on DMR standard;
Fig. 3 is the flow chart of the method for the initiation private network communication of foundation a preferred embodiment of the present invention;
Fig. 4 is the flow chart of the method for the response private network communication of foundation a preferred embodiment of the present invention;
Fig. 5 is the schematic diagram of the applied environment according to a preferred embodiment of the present invention;
Fig. 6 is the structural representation of the private network communication terminal according to a preferred embodiment of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Fig. 3 is the flow chart of the method 300 of the initiation private network communication of foundation a preferred embodiment of the present invention.As shown in Figure 3, method 300 starts from initial step 302, powers on for the private network communication terminal initiating private network communication.
Subsequently, at next step 304, monitor DMR time division multiple access frame and free timeslot wherein.When the private network communication terminal of in a certain geographic area initiates private network communication, DMR time division multiple access frame will be sent, and the carrier wave carrying this DMR time division multiple access frame will be received by all private network communication terminals in this geographic area simultaneously.Therefore, in specific implementation process, can adopt such as but not limited to RSSI(ReceiveSignalStrengthIndicator, received signal strength indicator) mode such as detection, carrier sense monitors the carrier wave of this DMR time division multiple access frame of carrying, and determines the free timeslot in DMR time division multiple access frame.Such as, first can set up according to sync pattern synchronous, distinguish each time slot with this, then RSSI detection or carrier sense are carried out to each time slot, to determine free timeslot wherein.
Subsequently, at next step 306, receipt of call initiates order, such as, detect that the push-to-talk button in private network communication terminal is pressed.
Subsequently, at next step 308, judge currently whether there is DMR time division multiple access frame, namely whether listen to the carrier wave of carrying DMR time division multiple access frame, if so, then forward step 310 to, otherwise, forward step 312 to.
As described above, if it is determined that the presence of DMR time division multiple access frame in step 308, then forward step 310 to, judge whether there is free timeslot in the DMR time division multiple access frame listened to, if, then forward step 314 to, otherwise repeatedly perform step 312, until find free timeslot in the DMR time division multiple access frame listened to.
As described above, if judge to listen in DMR time division multiple access frame to there is free timeslot in step 312, then forward step 314 to, use the free timeslot listened to initiate private network communication, then forward step 316 to.
As described above, if judge to there is not DMR time division multiple access frame in step 308, then forward step 312 to, directly initiate private network communication, namely initiate private network communication according to the direct transmission mode of the standard defined in DMR standard, then forward step 316 to.
Finally, method 300 ends at step 316.
As can be seen from said method 300, under direct mode operation, in the process initiating private network communication, mode provided by the invention monitors the free timeslot in DMR time division multiple access frame, private network communication is initiated again by the free timeslot that listens to, so, just can in the occupied situation of a time slot in DMR time division multiple access frame, use the time slot of another free time to initiate new private network communication, thus realize utilizing two time slots in DMR time division multiple access frame to carry out private network communication simultaneously.
But in the occupied situation of a time slot in DMR time division multiple access frame, use the time slot of another free time in DMR time division multiple access frame to initiate new private network communication if want, also need existence prerequisite, namely a road private network communication only can take a time slot.Only under this prerequisite, the private network communication terminal having neither part nor lot in this private network communication just by locking the free timeslot (namely next time slot of occupied time slot is free timeslot) that this occupied time slot (namely time slot occupied with this is set up synchronous) is determined in DMR time division multiple access frame, uses this free timeslot to initiate new private network communication then.Hereafter will the description carried out of composition graphs 4 by reading, reader just can find, replys used time slot and is time slot shared by this private network communication received, just can guarantee that a private network communication only can take a time slot thus to the private network communication received.
Before formally starting to describe the technical scheme in Fig. 4, should note, hereafter indication the private network communication received is replied in Fig. 4, refer to that private network communication terminal as the recipient of private network communication data is after receiving private network communication, calls out suspension time at CallHangtime() send call data as response in the time period.And for the call data sent after the CallHangtime time period, process as new private network communication of initiating according to the method shown in Fig. 3.Meanwhile, the private network communication to receiving as referred to herein is replied, and to comprise in private network communication process calling both sides to the response of the private network communication received.The answer method of private network communication is described with regard to composition graphs 4 below.
Fig. 4 is the flow chart of the method 400 of the response private network communication of foundation a preferred embodiment of the present invention.As shown in Figure 4, method 400 starts from step 402.
Subsequently, at next step 404, private network communication is received.Such as, private network communication terminal monitoring, to the DMR time division multiple access frame of carrying private network communication, oneself being the callee of this private network communication by checking that link control message is determined, then receiving this private network communication.
Subsequently, at next step 406, determine the time slot at the private network communication place received, the private network communication namely received by which time slot in DMR time division multiple access frame is transmitted.
Subsequently, at next step 408, within the CallHangtime time period, in the time slot determined in a step 406, make response.
Finally, method 400 ends at step 410.
As shown in Figure 4, when carrying out private network communication, calling both sides uses the same time slot in DMR time division multiple access frame to carry out this private network communication all the time, and this time slot is the time slot used when call initiator initiates this calling at first.When calling both sides uses same time slot in DMR time division multiple access frame to carry out this private network communication all the time, the private network communication terminal having neither part nor lot in this private network communication, just by locking this occupied time slot to determine the free timeslot in DMR time division multiple access frame, uses this free timeslot to initiate new calling then.
By reference to the description that composition graphs 3 and Fig. 4 above carry out, can sum up and show that the implementation method of private network communication provided by the invention is, when making response to the private network communication received, first need the time slot shared by private network communication determining to receive, then by this time slot determined, response is made to the private network communication received; Before initiation private network communication, monitor free timeslot, the free timeslot then by listening to initiates private network communication.Because calling both sides uses the same time slot in DMR time division multiple access frame to carry out this private network communication all the time, therefore the private network communication terminal having neither part nor lot in this private network communication, just by locking this occupied time slot to determine the free timeslot in DMR time division multiple access frame, uses this free timeslot to initiate new calling then.
The implementation method of embody rule environment to private network communication provided by the invention of showing below in conjunction with Fig. 5 is described in detail.
Fig. 5 is the schematic diagram of the applied environment 500 according to a preferred embodiment of the present invention.As shown in Figure 5, in applied environment 500, show the multiple stage private network communication terminal be in same geographic area, such as private network communication terminal 502 ~ 508, these private network communication terminals 502 ~ 508 realize the process of private network communication as mentioned below each other.
First, private network communication terminal 502 is for initiating private network communication to private network communication terminal 504.Suppose that now private network communication terminal 502 does not hear any DMR time division multiple access frame, then as above as described in method 300, private network communication terminal 502 directly initiates private network communication.Subsequently, the DMR time division multiple access frame carrying this private network communication will be received by private network communication terminal 504 ~ 508 simultaneously.
Subsequently, private network communication terminal 504 judges the callee of the private network communication that oneself is initiated for private network communication terminal 502, therefore it receives this private network communication, and judges the time slot shared by this private network communication, within the CallHangtime time period, then use this time slot to make response to this private network communication.
Subsequently, private network communication terminal 502 receives the private network communication as response that private network communication terminal 504 sends, judge the time slot shared by this private network communication, then within the CallHangtime time period, use this time slot to make response to this private network communication, and so forth until the private network communication between private network communication terminal 502 ~ 504 terminates.
Suppose to carry out in the process of private network communication between private network communication terminal 502 ~ 504, private network communication terminal 506 is for initiating private network communication to private network communication terminal 508.Because the DMR time division multiple access frame sent when private network communication terminal 502 initiates private network communication will be received by private network communication terminal 504 ~ 508 simultaneously, therefore private network communication terminal 506 can judge the time slot shared by private network communication between private network communication terminal 502 ~ 504, and uses the unappropriated time slot in DMR time division multiple access frame to make a call to private network communication terminal 508.After the private network communication receiving private network communication terminal 506 initiation, the mode that private network communication terminal 508 makes response is identical with the mode that private network communication terminal 504 makes response.
From said process, the implementation method of private network communication provided by the invention can utilize two time slots in the time division multiple access frame of DMR standard to carry out private network communication simultaneously.
Except initiation mentioned above and response private network communication method except, present invention also offers a kind of apply said method initiate and response private network communication private network communication terminal, be described in greater detail with regard to composition graphs 6 below.
Fig. 6 is the structural representation of the private network communication terminal 600 according to a preferred embodiment of the present invention.As shown in Figure 6, private network communication terminal 600 comprises reflector 602, monitors module 604 and receiver 606.Wherein, monitor module 604 to communicate to connect with reflector 602 and receiver 606 respectively.
The function of reflector 602 and receiver 606 has been done in the prior art and has clearly been described, and therefore repeats no more herein.
After receiver 606 receives private network communication, monitor the time slot at private network communication place of module 604 for determining receiver 606 and receiving, and control transmitter 602 makes response by the time slot determined to the private network communication received.
In addition, module 604 is monitored also for monitoring DMR time division multiple access frame and free timeslot wherein.Such as, monitor module 604 and carry out RSSI detection or carrier sense by receiver 606, monitor whether there is time division multiple access frame with this, and determine free timeslot wherein.When initiating private network communication, when there is not DMR time division multiple access frame, monitoring module 604 and control transmitter 602 directly can initiate private network communication; When there is DMR time division multiple access frame, monitoring module 604 and control transmitter 602 can initiate private network communication by the free timeslot in the DMR time division multiple access frame that listens to.
Should note, although each embodiment mentioned above is described according to DMR standard, but those skilled in the art it should be understood that the technical scheme provided by the invention other standards that also can be applicable to beyond based on DMR standard realizes the scheme of private network communication.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. a private network communication terminal, for making response to the private network communication received and initiate private network communication under direct mode operation, comprise receiver and reflector, it is characterized in that, described private network communication terminal also comprises:
Monitor module, itself and described receiver and described reflector communicate to connect, for:
Determine the time slot in DMR time division multiple access frame shared by the private network communication that described receiver receives, and control described reflector, by this time slot, response is made to the private network communication that this receives;
Monitor the free timeslot in described DMR time division multiple access frame, and control the free timeslot initiation private network communication of described reflector by listening to; And
When not hearing described DMR time division multiple access frame, controlling described reflector and directly initiating private network communication;
Described receiver receives the private network communication according to DMR standard;
Described reflector makes response and initiation private network communication according to DMR standard to the private network communication received.
2. private network communication terminal according to claim 1, is characterized in that, described monitoring module monitors the free timeslot in DMR time division multiple access frame by carrier sense mode.
3. an implementation method for private network communication, for making response to the private network communication received and initiate private network communication under direct mode operation, is characterized in that, comprising:
Determine the time slot in DMR time division multiple access frame shared by the private network communication that receives, and by this time slot, the private network communication that this receives is made to the step of response;
Monitor the free timeslot in described DMR time division multiple access frame, and initiate the step of private network communication by the free timeslot listened to; And
The step of private network communication is directly initiated when not hearing described DMR time division multiple access frame;
The step that the described private network communication to receiving makes response comprises further, makes response according to DMR standard to the private network communication received;
The step of described initiation private network communication comprises further, initiates private network communication according to DMR standard.
4. the implementation method of private network communication according to claim 3, is characterized in that, the step of the free timeslot in described monitoring DMR time division multiple access frame comprises the free timeslot monitored by carrier sense mode in DMR time division multiple access frame further.
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| CN201310135929.0A CN103281781B (en) | 2008-09-28 | 2008-09-28 | The implementation method of a kind of private network communication terminal and private network communication |
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| CN200880002212A CN101828341A (en) | 2008-09-28 | 2008-09-28 | Private network communication terminal and method for realizing private network communication |
| CN201310135929.0A CN103281781B (en) | 2008-09-28 | 2008-09-28 | The implementation method of a kind of private network communication terminal and private network communication |
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| CN200880002212A Division CN101828341A (en) | 2008-09-28 | 2008-09-28 | Private network communication terminal and method for realizing private network communication |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1136752A (en) * | 1995-03-10 | 1996-11-27 | 东芝株式会社 | Digital mobile communication system |
| CN1606246A (en) * | 2003-10-09 | 2005-04-13 | 乐金电子(中国)研究开发中心有限公司 | Mobile communication terminal concurrently having walkie-talkie function |
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- 2008-09-28 CN CN201310135929.0A patent/CN103281781B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1136752A (en) * | 1995-03-10 | 1996-11-27 | 东芝株式会社 | Digital mobile communication system |
| CN1606246A (en) * | 2003-10-09 | 2005-04-13 | 乐金电子(中国)研究开发中心有限公司 | Mobile communication terminal concurrently having walkie-talkie function |
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