CN1086649A - Communication system - Google Patents

Communication system Download PDF

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Publication number
CN1086649A
CN1086649A CN 93119180 CN93119180A CN1086649A CN 1086649 A CN1086649 A CN 1086649A CN 93119180 CN93119180 CN 93119180 CN 93119180 A CN93119180 A CN 93119180A CN 1086649 A CN1086649 A CN 1086649A
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China
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controller
scanning
group
voice channel
control messages
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CN 93119180
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Chinese (zh)
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阿米兰姆·高兹
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Motorola Solutions Israel Ltd
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Motorola Israel Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/08—Trunked mobile radio systems

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Communication system (10) cover a plurality of mesh and contain controller (13) and a plurality of communication equipment (A-J), communication equipment have the receiving and transmitting signal machine from/go controller (13) send out/to connect request message.Communication equipment comprises poll equipment and scanning communication equipment.Controller (13) comprising: database, contain the poll equipment information relevant with the present mesh at its place, and receiver is in order to receive request message and transmitter in order to transmit control message.When controller (13) is received phone group's request message first control messages is sent to the mesh of the communication equipment of the registration relevant, second control messages is sent to other mesh with this phone group.

Description

Communication system
The present invention relates to phone group's activity in the monitoring communication system, particularly (but not being) generally speaking and be applicable to that control monitors that trunk radio system is (as the Smartzone that is produced by Motorola Inc TM(Smartzone TMBe the trade mark of Motorola Inc) trunk radio system) phone group's activity.
As shown in Figure 1, Smartzone TMTrunk radio system is that several distant clusters system 11,12(are called " far-end scene ") network, each distant clusters system is connected on the central computer (being commonly referred to " Cell Site Controller ") 13, the work at its control far-end scene 11,12.Typically, Cell Site Controller can be responsible for nearly 50 such far-end scenes, and all these far-end scenes are distributed on the very wide geographic area.Particularly, the data/speech between the Cell Site Controller 13 management far-end scenes and the transmission 14 of control signal.In addition, the speech information that uses the speech network-building method to send passes through an audio frequency switch 15, be forwarded to the second far-end scene by Cell Site Controller 13 control from the on-the-spot relaying of first far-end so that at the second far-end scene as relayed call and by this speech information of uppick.Cell Site Controller 13 generally connects on the remote controller 16,17 of each far-end that puts in place by a microwave link 18.This field controller 16,17 directly is controlled at the operation of user radio device A in the particular remote scene-J just, and this field controller 16,17 and this Cell Site Controller 13 interfaces just.Control channel relay repeater 18,19 and voice channel relay repeater 20-23 with user radio device A-J respectively with this controller 16,17 and this Cell Site Controller interfaces.As long as user radio device A-J still works in a Smartzone TMIn the scope of the group system in the system, it just can be with trunking mode work.
Smartzone TMThe most noticeable characteristic of system is the on-the-spot distribution capability of dynamic far-end wherein.Cell Site Controller is keeping the database of all the effective user radio device A-J in the sub-district 10, in addition, also keeps sign (ID) x, y, the z of the current talking group of each user radio device A-J.When a user radio device A-Q when the on-the-spot 11-12 of a specific far-end begins talkgroup call, the scene 11,12 of other that Cell Site Controller 13 identifications are all, wherein at least one scene of the x of this phone group, y, z is positioned at it, and indicate this scene to distribute a channel, thereby allow each part of this phone group to receive that calling in the scene 11,12 that is identified those other by field controller.In order to distinguish between the user radio equipment in different phone groups, it is relevant to use a subscript to indicate, and for example, A α representative belongs to the user radio device A of the α of phone group.In addition, it is not the ability that the phone group that strictly is subordinate to carries out " scanning " that user radio equipment can have it, promptly, whether the user radio equipment of this scanning can monitor the calling that is directed to the β of phone group, and register at Cell Site Controller 13 no matter this line electricity equipment conduct belongs to the β of phone group.For the wireless device that makes scanning distinguishes from normal phone group part, the wireless device of scanning indicates with the additional subscript of the phone group that indicates it and can scan, for example, and H β αRepresentative is under the jurisdiction of the α of phone group and can scans the user radio equipment H of the β of phone group.Should understand, can scan the phone group that more than one phone group, user radio equipment can scan and all remain in the scan table though user radio equipment can only be under the jurisdiction of user radio equipment of a phone group at every turn.
The control channel relay repeater comprises, and a radio frequency (RF) transceiver, this transceiver send the data that send from Cell Site Controller 15 continuously to all user radio device A-E, F-J of working in far-end scene 11,12.This transceiver also carries out relaying to the data that send to far-end field controller 16,17 from user radio device A-E, F-J its scene 11,12 and transmits.Encode with a special form from the data that this controller 16,17 sends, and be designated as " going out net signaling (OSW) ".According to a kind of similar mode, the data that field controller 16,17 receives are also encoded with special form, and are designated as any label networking signal letters (ISW) ".Each far- end scene 11,12 also comprises voice channel relay repeater 20-23, each voice channel relay repeater has one or more RF transceivers, and it is transmitted to the user radio equipment Dy that has identical phone group to be subordinate in that particular scene 11 with the sound signal relaying that user radio equipment Cy comes.When the voice channel relay repeater was retransmitted the sound signal that receives, this sound signal was combined according to the form of certain handshaking protocol usually.User radio device A-J generally comprises a transceiver, and well known to a person skilled in the art that by basis technology is as a twoway radio job.In addition, user radio device A-J can synthesize any control signal or voice/data channel frequency, so that can send and receive control and data/speech information respectively.
Phone group's scan operation of user radio device start typically has following method.All user radio device A-E, F-J intercept a control channel in far- end scene 11,12, by 16,17 broadcasting of a specific far-end field controller, and the OSW source codec to sending on this channel.Those skilled in the art understands, the work of far-end field controller 16,17 provides in a far-end scene user radio equipment interface to a kind of method of Cell Site Controller 13.More particularly, the groundwork of field controller is to distribute available voice channel in its scene and adjust host-host protocol, is the OSW that is assigned to user radio device A-J as come data conversion from Cell Site Controller.For this reason, field controller is to Smartzone TMThe process that operating system makes a decision (that is at line electricity equipment of determining to be arranged in which on-the-spot α of phone group) works.Therefore, for simplicity, the information flow by field control station 16,17 is left in the basket basically in this application scenario and has disregarded, because the channel allocation of field controller and operating protocol conversion are apparent to one skilled in the art.
For example, if the user radio device A wishes to begin phone group's relayed call to the X of phone group, then user radio A sends an ISW through field controller 16 to Cell Site Controller, and a talkgroup call to the X of phone group is set up in the own also request of identification.In response, Cell Site Controller 13 is confirmed this request by sending a call admission.Field controller 16 is given the voice channel of that particular call set of dispense in that particular scene then, that is, and and the user radio device A xAnd B xSpecial-purpose voice channel.Cell Site Controller 13 is indicated the wireless device that scans among other all users and the x of phone group simultaneously, promptly is arranged in the user radio equipment F at other far-end scene xAnd G xMove on on the available voice channel.The user radio device A xBegin to send speech information, and all wireless devices that respond the x of its phone group simultaneously start their loud speakers and receive speech information as relayed call.The wireless device E of scanning x zAlso move on to the voice channel of the distribution in far-end scene 11, call out so that monitor the x of phone group.User radio equipment C y, D xWith H yUser radio equipment J with scanning z yContinue to monitor the control channel at their far- end scenes 11,12 separately.Certain time afterwards, user radio equipment C yHope begins the talkgroup call to the y of phone group.User radio equipment C ySend an ISW to Cell Site Controller 13, this Cell Site Controller 13 is confirmed this request and is distributed second voice channel to far-end scene 11 by field controller by sending an OSW.User radio equipment D yMove on to this second voice channel frequency and on this frequency, receive speech information.According to aforesaid method user radio equipment H yAnd the wireless device J of scanning z y, also receive the calling of the y of phone group.Because Cell Site Controller 13 is multitasks, the influence that the operation of the x of phone group is not called out by this extra y of phone group.When the user radio device A xWhen stopping the transmission to other part of its phone group, all make the user radio equipment of intercepting or scan the x of phone group get back to the control channel at their far-end scenes separately of supervision.At this moment, having participated in that call out an and user radio equipment scanning wireless device that be the y of phone group of the x of phone group will decode to the OSW that Cell Site Controller 13 sends, and moves to the voice channel of distributing to the y of phone group.The scanning wireless device starts its loud speaker and intercepts by user radio equipment C yThe calling that sends.
Unfortunately, be arranged in far-end scene 13 and be registered in the y(of phone group as representing with subscript) user radio equipment J z yExist wish the scanning z of phone group and after intercept the situation of any calling that is directed to this phone group.Actually, it is very high not register to the probability of user radio device A-H of the z of phone group in its far-end scene 12.Therefore, if that in far-end scene 11, work and distribute to the z of phone group user radio equipment E x zWhen beginning to call out, Cell Site Controller 13 is not given far-end scene 12 by voice channel of Control Allocation of field controller 17, is to be in that far-end scene because do not distribute to the user radio equipment of the z of phone group.In far-end scene 12, there be not under the situation of voice channel of the z of phone group the user radio equipment J of scanning z yBe not know by user radio equipment E x zThe calling of beginning.
Can know, radio system to cluster with method of operation has a requirement in the art, this method of operation allows the user to monitor the call activity amount of phone group, and this user or other Any user that are arranged in user's far-end scene are not distributed to this phone group.
Above narrating more ever-present defectives in the prior art at least.According to a first aspect of the invention, a kind of communication system in order to topped a plurality of mesh is provided here, this communication system comprises a plurality of communication equipments, spread all over above-mentioned a plurality of mesh, each communication equipment has a transceiver, in order to send a request message to controller and from this controller receiving control message.A plurality of communication equipments comprise the communication equipment of registration, the communication equipment of when relevant, register and scanning by controller with a phone group, and it receives at least one phone group.This communication system also comprises a controller, in order to manage the control that it is done.This controller has: a database, this database contain the relevant information of current mesh with the communication equipment place of registering; A receiver responds above-mentioned request message; And a reflector, in order to transmit control message.This controller also comprises processing unit, this processing unit has first device, in order to first control messages to be provided, all receive first voice channel with instruction " communication equipment of the described registration relevant and in order to scan the described scanning communication equipment of described special phone group ", participate in talkgroup call whereby with described specific talk group.This processing unit also comprises: second device, in order to second control messages to be provided, be established and the 3rd device with the talkgroup call of indicating this specific talk group, first control messages that is sent out in order to guiding is to the communication equipment that comprises the registration relevant with described specific energy words group.The 4th device, it is contained in the processing unit, and second control messages that guiding is sent out is to other all mesh.When described receiver receives from first request message that the communication equipment of a registration sends, send first and second control messages, request is to setting up the dial-up of phone group.
In a first aspect of the present invention, it is those available other sub-districts that second control messages only is sent to voice channel.Each also comprises generator the communication equipment of scanning, in order to provide one to be subordinate to request message, to guide scanning communication equipment of this controller registration to receive described specific talk group with equipment as a registration of a described specific talk group, and guidance device, arrive this controller in order to the described request message transmission that is subordinate to that is transmitted.This processor device also comprises the 5th device, be used to provide the 3rd control messages, receive a voice channel, participate in described talkgroup call whereby so that indication receives the described scanning communication equipment of described special phone group, with the 6th device, in order to guide described the 3rd control messages that is transmitted.The device that guide is subordinate to request message responds the reception of described second control messages, guides the described request message that is subordinate to, and described the 3rd control messages of described the 6th device guiding is subordinate to request message and receives from these sub-districts to all sub-districts.In addition, the described device that is subordinate to request message of guiding guides the described request message that is subordinate to after a time delay at random.In addition, processing unit also comprises: the 7th device, in order to provide one to upgrade control messages, set up with the described talkgroup call of indicating described specific talk group, with the 8th device, be directed at present and those irrelevant sub-districts of described talkgroup call in order to the described renewal control messages that will be transmitted, wherein said renewal control messages sends periodically.In addition, updating message only send at present with described talkgroup call irrelevant and also wherein voice channel be those available sub-districts.
According to a second aspect of the invention, provide a controller that is used for trunk radio system here.Trunk radio system comprises the radio footprint by base station services, and the radio unit of registration and the radio unit of scanning are arranged in the phone group and the scene that is adapted to pass through communicates with this controller.Controller comprises in order to the relevant device of phone group under will radio unit and those unit of registration; Be used for the radio unit of registering being carried out relevant device with the area at these places, unit in a preset time; Be used for input instruction so that between the radio unit that belongs to the same calls group, set up phone group's communicating devices; Respond the described device that is used to import, be used to send first device of ordering the coverage of those base stations, be arranged in these coverages as the radio unit that belongs to those registrations that this phone group registers; Be used to send second devices of ordering all its electricity zones of base station services, wherein second order request scanning radio unit that receives described phone group itself is subordinate to mutually with this controller.One first voice channel of the first order indication base station assigns is given described phone group.In addition, second message only sends to wherein that voice channel is those available other areas.
According to a third aspect of the invention we, provide a kind of in order to distribute the method for voice channel in communication system here, this communication system comprises a plurality of coverage areas, controller, the radio unit of a plurality of registrations and the radio unit of scanning.This method may further comprise the steps: the phone group under the radio unit of registration and these unit carries out relevant; Radio unit registration preset time carries out relevant with the coverage area at these places, unit; Controller (13) receive come from the communication unit of a registration, be a request of a talkgroup call setting up of a specific phone group; Discern those coverage areas at the radio unit place of the registration that belongs to this specific talk group; All coverage areas to identification send first voice channel permission, thereby set up phone group's communication between the radio unit of this specific talk group belonging to; With send a control messages from this controller to all unrecognized other coverage areas, indicate the talkgroup call of this specific talk group to set up.This method is further comprising the steps of: respond this controller from one of the radio unit transmission of a scanning, this scanning radio unit receives this specific talk group and is arranged in the coverage area that described control messages sends to; The radio unit of indicating this scanning is the scanning radio unit of registering at this controller as the radio unit of the registration of specific talk group described in this coverage area at its place; With receive this response at this controller and send second voice channel permission to all coverage areas, response is to receive from above-mentioned all coverage areas, thereby phone group's communication extends to the coverage area at the scanning radio unit place that receives this specific talk group.In addition, this method is further comprising the steps of: send from this controller cycle ground and upgrade all coverage areas that control messages does not participate in this phone group's communication up till now, thereby described updating message indicates the particular call group calls in several of this specific talk group to set up, with send a response from the scanning radio unit that receives this specific talk group to this controller, indicate this scanning radio unit in the registration of this controller, as the radio unit of a registration of the described specific talk group in the footprint at its place.This method is further comprising the steps of: receive one at this controller and respond and send the 3rd voice channel and permit to all coverage areas, response receives from these coverage areas, thereby this phone group's communication extends to the footprint at the described scanning radio unit place that receives this specific talk group.In aspect this, be delayed a time at random from the transmission of the response of this scanning radio unit.In addition, whether effectively the step before the determining step can be to determine to ask to set up specific talk group step, if invalid, then refuses this request.
Referring now to accompanying drawing an exemplary embodiment of the present invention is described.
Fig. 1 explanation is suitable for the trunk radio system of the preferred embodiment enforcement prior art of the method according to this invention.
The flow chart of the scan method that realizes in the trunk radio system of Fig. 2-3 explanation according to formation of the present invention.
With reference to the flow chart of Fig. 2 and 3, this illustrate according to a preferred embodiment of the invention, be used for Smartzone TMA kind of scan method of trunk radio system.Emphasize that as the front the definite interface operation of far-end field controller 16,17 has been left in the basket, because it is the reciprocation between user radio equipment and the effective Cell Site Controller of wanting among the on-the-spot 11-12 of a plurality of far-ends 13.
All user radio device A-E, F-J in far- end scene 11,12 monitor the control channel of (step 30) appointment wherein, determine the talkgroup call whether user has asked the α of (step 32) phone group, promptly whether the user has pressed the button PTT on user radio device A-E, the F-J.If the talkgroup call of the α of phone group has been asked, here α determines any phone group among the x of phone group, y or the z, then this user radio equipment (the radio setting of request) A-J sends (step 36) ISW and controls 13 to the sub-district, if it does not also have to do like this (step 34), then the talkgroup call of the α of phone group is set up in request.Simultaneously, Cell Site Controller 13 monitor that (step 38,40) come from user radio equipment, with ISW " request " information of a suitable data format from field control 16 and 17 relayings.If do not receive ISW, then Cell Site Controller continues to monitor the ISW request and is retained in this supervision loop.If the ISW request has been received (step 41), then Cell Site Controller determines by the database of consulting it whether (step 42) this requesting users wireless device is under the jurisdiction of the α of phone group, thereby determines whether to permit this request.If this request is rejected (step 44), then Cell Site Controller is got back to supervision (step 38,40) ISW " request " information, and this user radio equipment is got back to the beginning of this flow process.Allowing user radio device A-J to communicate by letter with the α of phone group under the situation of (step 45), Cell Site Controller 13 is discerned (step 47) all far-end scenes (x), and wherein at least one part of the α of phone group is registered.In step 48, Cell Site Controller 13 determines whether that the voice channel at all scenes (x) all is available.In the situation (step 50) of negating, the user radio equipment of Cell Site Controller notice request: do not have the voice channel of sufficient amount can supply to utilize (step 52).Cell Site Controller 13 turns back to step 48 then by a waiting time loopback (step 52).In case when all scenes (x) and voice signal have become available (step 54), this Cell Site Controller sends the channel permission OSW of (step 56,58) α of phone group to carrying out ISW requesting users wireless device and all other users that are under the jurisdiction of the α of phone group.In the user radio equipment that comprises this speaking wire of request α calling, should understand this channel permission OSW(step 56,58) can be individual command.But, this requesting users wireless device is used with send (step 60) of any other user radio equipment diverse ways to OSW and is responded, and above-mentioned any other user radio equipment is under the jurisdiction of the identical α of phone group and is arranged in identical or different far-ends scenes (step 62).
The wireless device of request with its transceiver be tuned to voice channel (distributing) and begin transmission (step 64) by the far-end field controller of being responsible for its control.Transmitting continuous for example till a PTT starts.If this transmission has stopped (step 68), then Qing Qiu wireless device can or turn back to beginning, thereby restarts this process, perhaps moves on to receive mode (step 70), the type decided that this transmits according to the relaying of all employings.Transmit if this trunk protocol is a transmission trunking, then select the former, transmit, then select the latter if trunk protocol is a message relay.Those skilled in the art understands that in this sense, message relay is transmitted and is meant whether user radio equipment wishes to continue to receive this talkgroup call.Therefore, this user radio equipment can enter receive mode, thus receiver by tuning reception voice channel, and loud speaker is activated.In addition, user radio equipment can reset into the load mode (not shown) subsequently, thereby its loud speaker is not worked.When last this talkgroup call stopped (step 72), all the user radio equipment among the α of phone group all turned back to beginning.Also should understand, term " tuning " should be interpreted as meaning that at this paper this transceiver moves this voice channel frequency, so that this talkgroup call of transmission/reception, perhaps, mean that this user radio equipment sends or receives in this voice channel frequency, therefore, this user radio equipment should still be locked in this frequency.
All user radio device A-J that are arranged in far-end scene (x) receive (step 62) channel permission OSW and inquire the operating state that they are present from Cell Site Controller 13.At first, each user radio equipment determines whether it is under the jurisdiction of the α of phone group and can responds the α of this phone group calling at present, that is, whether it is in a substitute mode for example to contrast secret mode.Under the situation of affirming "Yes", this user regulates its sender so that receive the voice channel of being distributed by field controller 16,17.Under the situation of negating " non-" (step 74), this user radio equipment is determined (step 76), and whether it is in scan mode and is scanning the α of phone group.In the situation (step 78) of affirming "Yes", the wireless device of scanning is regulated its transceiver so that receive the voice channel of being distributed by base station controller 16,17.Therefore, should understand that in case channel permission OSW has sent to all scenes (x) of the wireless device that comprises the α of phone group, the wireless device of the α of phone group that all are subordinate to and the scanning α of phone group call out.If the response to step 76 is the situation of negative " non-", then user radio equipment turns back to beginning.
Get back to the identification (step 47) at the scene (x) that comprises at least one α of phone group part, this part is registered in the database of Cell Site Controller 13.Very clear, in this example, Cell Site Controller has been discerned all scenes (x) that do not comprise the user radio equipment that is under the jurisdiction of the α of phone group at present in the dark.The user radio equipment of wishing the scanning α of phone group is not got rid of at this scene (x).Cell Site Controller sends (step 80) talkgroup call activity and measures net signaling word (TGCA OSW) to those all scenes with untapped voice channel.The Any user wireless device of the scanning α of (step 82) phone group is waited for a time of delay at random, by the talkgroup call activity networking signaling word (TGCA ISW) that sends the α of (step 84) phone group TGCA OSW is responded then.Under the situation of the TGCA ISW that does not receive scene (x), promptly there is not user's wireless device to want to scan the α of phone group, user radio equipment turns back to beginning and monitors this control channel.Cell Site Controller 13 distributes an available voice channel to confirm the TGCA ISW that receives by indication to it.Selectively, the invention provides and be sent to a renewal that is not by the far-end scene of the initial addressing of TGCA OSW.After step 80, Cell Site Controller is overtime and send a renewal at step 94-98, so that overcome this defective.To recitation of steps 94-98 at length below.In addition, Cell Site Controller 13 arrives the α of phone group with the user radio device registration of scanning.When the user radio equipment of scanning when this (field controller 16,17) Cell Site Controller 13 receives (step 88) channel permission OSW, the user radio equipment of this scanning is regulated (tuning) (step 90) its transceiver and is participated in the α of this phone group calling to the voice channel of this distribution and by the loud speaker that starts it.Stop (step 92) when the α of this phone group calls out, the user radio equipment of this scanning turns back to beginning and monitors the control channel that it is on-the-spot at present.
At the duration that the α of phone group calls out, Cell Site Controller 13 can continue to seek an available channel of (x) at the scene.If still working in a preset time (step 94) α of this phone group calling afterwards, then Cell Site Controller can send the TGCA OSW renewal of (step 98) one-period, thereby may allow other scanning wireless device to participate in the α of this phone group calling.But, if the α of this phone group calls out and stops before an available speech is identified, then being arranged in the far-end scene is not note what the α of this phone group called out as the wireless device that comprises a scanning of a user radio equipment distributing to the α of phone group, and the specified control channel at the far-end scene that has of this its order of scanning user radio equipment monitor (step 40).At last, briefly say, a user radio equipment is worked in a major loop, this major loop comprises such step: monitor control channel (step 30), determine whether the user has asked the α of phone group to call out (step 32), determine whether to receive (step 60,62) its phone group that is subordinate to or be included in the OSW of a phone group in its scan table and determine whether (step 100) has received the TGCA OSW of a phone group in the scan table that is included in it.
In general, when talkgroup call at the beginning, Cell Site Controller 13 just sends a special unique TGCA OSW to any far-end scene through a far-end field controller 16-17, do not require that in above-mentioned any telepoint base station channel allocation and voice channel are available, therefore a talkgroup call appears in the wireless device of notice scanning.In addition, according to OSW on control channel in any particular remote scene " traffic carrying capacity " quantity, TGCA OSW is sent out many times.In a preferred embodiment, TGCA OSW is sent out between 1 to 4 time.In addition, the structure of typical TGCA OSW form is 16 bit identification (ID) fields, after connect I bit identification and 10 bit status fields of 1 bit.More particularly, id field comprises the phone group's identification code and the 4 bit type of calls of 12 bits, and the mode that this type of call classification is called out is as urgent call or a plurality of talkgroup call.The I bit field stipulates whether this calling is to carry out on the basis of special use, thereby has only 1 or 2 user to be allowed to access.At last, the state of a calling of mode field regulation, as the voice channel frequency of distributing, whether this calling is rejected, or the like.In a preferred embodiment, OSW is encoded as a frame, is called the WFT frame, and it has the transmission time of big fair 23.33ms.This WFT frame is corresponding to being forwarded the word of one 84 bit that send and being made up of the OSW of the encryption of 57 bits and 27 bits with 3600.
When the user radio equipment of scanning is wanted to participate in talkgroup call and when also automatically not distributing to the voice channel of this talkgroup call, the user radio equipment of this scanning is waited for the time of a random amount, and this time stipulated according to the WFT frame before sending TGCA ISW.This time at the 1WFT frame in the scope of 43WFT frame (1 second).If Cell Site Controller 15 does not respond to TGCA ISW in 60WFT frame (～1.4 seconds), then this scanning user radio equipment will resend this TGCA ISW after above-mentioned delay.During continuing very long talkgroup call, Cell Site Controller 15 can be retransmitted TGCA OSW periodically.This speed that retransmit to take place is subjected to the domination of OSW traffic carrying capacity at present in the particular scene, and typically can be at per 15 seconds once and per minute change between once.
Should understand, can require to scan the more than one phone group of user radio device scan, α for example, β and γ wherein do not have phone group to have priority.Therefore, if the TGCA of the user radio device responds β of phone group does not require that then to reconfigure it own so that scan any phone group of other two phone groups.Selectively, the user radio equipment of scanning can be with a preferred scanning sequency, thereby for example calls out when stopping at the β of phone group, and this user radio equipment oneself is under the jurisdiction of the highest preference phone group again with it, as the γ of phone group.
Consider that below the invention of suggestion is to Smartzone TMTrunk radio system work and Effect on Performance.At first, discuss the additional control channel load that produces from TGCA OSW transmission.At present, Smartzone TMThe on-the-spot number of far-end maximum in the trunk radio system is 50.Fifty-fifty, there are 10 voice channels to distribute to each telepoint base station, therefore, at whole Smartzone TM500 voice channels are arranged in the system.On-the-spot any talkgroup call that participates in of 4 far-ends of assumed average, if do not consider private calls, relay repeater fault or the like, the average of talkgroup call can not be above 125.If in an average scene, 10 effective talkgroup call are arranged, then should use the average in the exhaling of TGCA ISW notice to be 125-10-115.The assumed average talkgroup call time is 15 seconds (comprising response and repeater retention time), and the Mean Speed that TGCA OSW need send is 115 ÷ 15=7.66OSW/ per seconds (supposition TGCA OSW transmission is only required once).Because total OSW transmission rate is per second 42.85OSW, then the OSW transmission increases to 7.66 ÷ 42.85=0.178(or 17.8%).Suppose that 50% of whole callings continued greater than 15 seconds, 10% continues to transmit TGCA OSW again and increase (7.66 * 0.5)+7.66 * 0.1=4.6OSW/ per second altogether in then per 15 seconds greater than 30 seconds and a spot of continuing greater than 45 seconds.At Smartzone TMUnder the situation of maximum voice activity amount, the control channel load increases by 17.8% in the trunk radio system.If we consider the transmission of the TGCA OSW that adds, then the control channel load is increased to 28.5%.Should understand have the on-the-spot or less talkgroup call of less far-end to be activated in this system, then the OSW load has reduced and initial TGCA OSW can be resend, and in addition, can allow TGCA OSW to upgrade with the same high speed with this system and send.
The invention of suggestion is to Smartzone TMTGCA ISW effects of load proposes below in the trunk radio system.Two or more user radio equipment of each FM trunk radio system are attempted can produce interference when the identical time sends ISW.In addition, if the information strength that receives is substantially the same, receiver can not be decoded to ISW information.This phenomenon is called the ISW collision.If 1 in the M scope one at random during the WFT after, N user radio equipment responds TGCA OSW by sending a TGCA ISW, and then the definite probability of its a TGCA ISW of wireless device transmission is after a WFT:
（ 1/(M) ）×（ (（M-1）)/(M) ） （N-1）×N＝（ (N)/(M) ）×（ (（M-1）)/(M) ） （N-1）＝P 1
The I of WFT after the cycle or more than one user radio equipment or the probability that do not have user's wireless device to send ISW be 1-p, irrelevant with I.Probability in nearly K WFT cycle neither one ISW transmission is (1-p 1) k, its expression has been not send an ISW continuous k time.If supposition has the scan mode of 130 user radio equipment works in particular scene, and each phone group is by a user radio device scan, then 43 wireless devices respond to identical TGCA OSW simultaneously.M=43 in a preferred embodiment of the invention, the probability that sends single TGCA ISW after 1WFT is
（ 43/43 ）×（ (（43-1）)/43 ） （43-1）＝0.372＝P 1
Sending the unsuccessful probability of TGCA ISW after cycle at for example 22WFT is
（1-0.372） 22＝3.56E-5
Suppose that what its time in office probability of at least one user radio equipment transmission ISW is 50%, response is not the task of TGCA OSW here, and ISW is sent out, therefore, and P 2=0.5.1WFT after the cycle just what a user radio equipment send TGCA ISW and the probability of other interference of not producing from normal ISW response is
P 1（1-P 2）＝0.372×0.5＝0.186。
Because the unsuccessful probability that sends single TGCA ISW after cycle at k WFT that ISW collision produces is:
（1-P 1（1-P 2）） K
The unsuccessful probability that sends single TGCA ISW at for example 43WFT after cycle is
（1-0.186） 43＝1.43E-4
Work as P 2=0.9, the unsuccessful probability that sends single TGCA ISW at for example 43WFT after the cycle is
（1-（0.372×0.1）） 43＝0.195＝19.5%
Can know from top calculating, the probability that 43 wireless devices that scan the same calls group in the sequence in 43WFT cycle simultaneously send decodable TGCA ISW is 99.99% during for 50% load of other ISW word, during perhaps for 90% load of other ISW word 80.5%.Therefore can know that top algorithm guarantees successful high probability.
Distribute to each on-the-spot 10 voice channels and Smartzone of 15 seconds of mean call duration to having TMTrunk radio system can be inferred and be carried out an ISW request at the most, therefore, and every 1.5 seconds beginning calls.In addition, the great majority of these requests are normal ISW request rather than TGCA ISW request.For such scene load, all relay repeaters all be hurry and also do not have TGCA ISW to be sent out.In addition, if suppose 1/3rd of no more than all ISW requests of TGCA ISW request, then TGCA ISW asks with approximately speed appearance once in per 5 seconds in a preferred embodiment.In a word, quite a large amount of wireless device phase structure of the random delay before TGCA ISW request and request same services causes when response TGCA OSW in the probability of success of attempting to obtain a voice channel for the first time very high.But, extra about 20% the load that increases of ISW control channel.
The calculating of losing about response time and call activity amount, because TGCA ISW request is uneven distribution in the cycle at 1-43WFT, under the situation of the limit, average request will be about 0.5 second of 22WFT() receive from unique user radio equipment by a field controller afterwards.In addition, add the delay between (a) this calling beginning and the TGCA OSW; (b) response time of Cell Site Controller and remote controller; (c) this user radio equipment forwards the voice channel and its required time of loud speaker of startup of distribution to; The talkgroup call that the user radio equipment of scanning may be lost is between 1 and 2 second.If a calling typically continues 15 seconds, this is equivalent to lose between 15% to 20%.In addition, if TGC ISW must retransmit, then lost other 60WFT frame (about 1.4 seconds).
Can know that the invention that designs like this and narrate has produced the advantage of the novelty of trunk radio system: this system have the scanning that can determine trunk radio system user radio equipment existence and distribute the control method of a voice channel to it. In addition, the method only is used for when the user radio equipment of scanning can not automatically distribute suitable voice channel The distribution of voice channel, described suitable voice channel make the user radio equipment of scanning can monitor the talkgroup call of setting up in a specific talk group. Certainly, should understand, just narrate by way of example above, and the change of details is as using redundant loop to be sent out (34) or to receive and can carry out in this bright scope to guarantee ISW or OSW.

Claims (17)

1, a kind of communication system of topped a plurality of mesh, its feature is comprising:
A) a plurality of communication equipments (A-J) are distributed in described a plurality of mesh (12,13), and each communication equipment has a transceiver, are used to send a request message to a controller (13) and slave controller (13) receiving control message;
Wherein said a plurality of communication equipment (A-J) comprising:
The communication equipment of registration, its conduct is relevant registering at controller (13) with a phone group; With
Receive the communication equipment of the scanning of at least one phone group; With
B) controller is used to manage the control of this communication system, has:
I) database comprises the communication equipment information relevant with the present mesh at their places of registration;
Ii) respond a receiver of described request message; With
Iii) be used to send a reflector of described control messages;
This communication system is characterised in that:
Described controller (13) also comprises processing unit, and this processing unit has:
Be used to provide first device of first control messages (OSW), so that indicate the communication equipment of the described registration relevant and the described scanning communication equipment of the described specific talk group of scanning all to receive first voice channel, thereby participate in a talkgroup call with described special phone group;
Be used to provide second device of second control messages (TGCA DSW), so that indicate the described Tongxu group calls in several of described specific talk group to set up;
The 3rd device is used to guide described first control messages that is sent out all mesh to the communication equipment that comprises the registration relevant with described specific talk group; With
The 4th device is used to guide described second control messages (TGCADSW) that is sent out to other all mesh;
Wherein when described receiver is received first request message, send described first and second control messages, described first request message is to send from the communication equipment of a registration, and the talkgroup call of specific talk group is set up in request.
According to the communication system of claim 1, it is characterized in that 2, it is those available other mesh that described second control messages only sends to its voice channel.
3, according to the communication system of claim 1 or 2, it is characterized in that:
A) each described scanning communication equipment also comprises:
ⅰ) provide the device that is subordinate to request message, a scanning communication equipment that is used to indicate this controller will receive described specific talk group is registered as a registering apparatus of described specific talk group; With
ⅱ) guide the described device that is subordinate to request message to described controller (13) that is sent out;
B) described processing unit also comprises:
ⅰ) provide the 5th of the 3rd control messages (DSW) to install, be used to indicate the described scanning communication equipment that receives described specific talk group to receive a voice channel, thereby participate in described talkgroup call; With
ⅱ) be used to guide the 6th device of described the 3rd control messages that is sent out;
Wherein be used to guide the described described device that is subordinate to request message to respond the described request message that is subordinate to of described second control messages guiding, and described the 3rd control messages of described the 6th device guiding is subordinate to request message and receive from these mesh to all mesh.
4, according to the communication system of claim 3, it is characterized in that, guide the described described device that is subordinate to request message after the delay of a random time, to guide the described request message that is subordinate to.
5, according to the communication system of any claim of front, it is characterized in that described processing unit also comprises:
Provide and upgrade control messages (TGCA OSW), be used to indicate the described dial-up of described specific talk group to set up at the 7th device; With
The 8th device is used to guide the described renewal control messages (TGCA OSW) that is sent out not participate in the mesh of described talkgroup call up till now;
Wherein said renewal control messages sends periodically.
According to the communication system of claim 5, it is characterized in that 6, the described cycle is in 10 to 60 seconds scope.
According to the communication system of claim 5 or 6, it is characterized in that 7, described updating message only sends to and do not participate in described talkgroup call at present is those available mesh with its voice channel.
8, a kind of controller that is used for trunk radio system, this trunk radio system comprises, comprise radio coverage area by base station services, the radio list ground of radio unit of triangular bream and scanning, be arranged to phone group and be applicable to by base station and this controller and communicate, this controller is characterised in that and comprises:
Be used for will registration radio unit carry out relevant device with phone group under these unit;
Be used for the radio unit of triangular bream being carried out relevant device with the zone at these places, unit in the given time;
Be used to import the device of an instruction, so that between the radio unit that belongs to the same calls group, set up the communication of phone group;
Respond described input unit, be used to send first device of ordering those base station service area, be arranged in described service area as belonging to the registration radio unit that this phone group registers; With
Be used to send the device that second letter is ordered other all regional base station of service;
The scanning radio unit that wherein said second command request receives described phone group oneself is under the jurisdiction of this controller with it.
9, controller according to Claim 8 (13) is characterized in that, the described first order indication base station assigns, first voice channel is given described phone group.
According to the controller (13) of claim 9, it is characterized in that 10, it is those available other zones that described second message only sends to its voice channel.
It is 11, a kind of that this communication system comprises a plurality of coverage areas in order to distribute the method for voice channel in communication system, a controller, and the radio unit of registration and the radio unit of scanning, this method is characterized in that may further comprise the steps:
A) radio unit with registration carries out relevant with phone group under these unit;
B) carry out relevant with the coverage area at these places, unit the radio unit of registering in preset time;
C) be received as the request of the talkgroup call that specific talk group sets up from the communication unit of registration at this controller (13);
D) discern those coverage areas, the radio unit that belongs to the registration of specific talk group is arranged in these footprints;
E) send first voice channel perhaps to all footprints of discerning in step (d), thereby belonging to the communication of setting up conversation between the radio unit of this specific talk group;
F) from this controller to sending control messages in Unidentified all other the footprint of step (e), indicate the talkgroup call of this specific talk group to set up.
12, according to the method for the distribution voice channel of claim 11, it is characterized in that described control messages is only issued those coverage areas with available voice channel.
13, according to the method for the distribution voice channel of claim 11 or 12, it is characterized in that, further comprising the steps of:
G) radio unit from a scanning sends a response to this controller, this scanning radio unit receives this specific talk group and is positioned at the coverage area that described control messages sends to, and this response shows that this scanning radio unit is registered as the radio unit of a registration of the described specific talk group in the coverage area at its place at this controller;
H) go out second voice channel words at the response concurrent of this controller receiving step (g) and can give and receive all coverage areas of response, thereby phone group's communication is extended to the footprint at the scanning radio unit place that receives this specific talk group.
14, according to the method for the distribution voice channel of claim 13, it is characterized in that, further comprising the steps of:
I) send the renewal control messages from this controller cycle ground and do not participate in the logical main all coverage areas of this phone group up till now, thereby described updating message indicates the talkgroup call of this specific talk group to set up;
J) radio unit from a scanning receiving this specific talk group sends a response to this controller, and the nothing knot electric unit of indicating this scanning is registered as the radio unit of a registration of the described specific talk group in the coverage area at its place at this controller;
K) in the response of this controller receiving step (j), and send the 3rd voice channel and permitted to be received all coverage areas of response, thereby phone group's communication is extended to the coverage area at the described scanning radio unit place that receives this specific talk group from it.
15, according to the method for the distribution voice channel of claim 14, it is characterized in that described renewal control messages only sends to those coverage areas with available voice channel.
16, according to the method for claim 13,14 or 15 distribution voice channel, it is characterized in that, send the step (g) of response and (j) transmission after a random time postpones from the radio unit of this scanning.
17, according to the method for the distribution voice channel of any claim of claim 9-16, it is characterized in that determining step (d) front is following steps:
Whether specific talk group is set up in definite request effective, if invalid, then refuses this request (step (c)).
CN 93119180 1992-10-17 1993-10-16 Communication system Pending CN1086649A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1314283C (en) * 2003-09-05 2007-05-02 华为技术有限公司 Group call area setting method for cluster communication system
CN102172068A (en) * 2008-10-03 2011-08-31 摩托罗拉解决方案公司 Method for trunking radio frequency resources
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Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08214370A (en) * 1995-02-02 1996-08-20 Hitachi Denshi Ltd Terminal equipment calling method for multi-channel access communication system
ES2220949T3 (en) * 1995-02-16 2004-12-16 Siemens Aktiengesellschaft PROCEDURE FOR THE ESTABLISHMENT OF A CALL COMMUNICATION FOR A GROUP CALL TOWARDS A GROUP OF MOBILE RADIO SUBSCRIBERS IN A MOBILE RADIO NETWORK.
FI101923B (en) * 1995-12-05 1998-09-15 Nokia Telecommunications Oy Distribution of speech tours to the mobile stations operating on direct channel
JP3048961B2 (en) * 1997-06-09 2000-06-05 日本電気移動通信株式会社 Group communication method
US6377560B1 (en) * 1998-10-09 2002-04-23 Ericsson Inc. Group call capability in a wireless network
US6564049B1 (en) * 1999-05-10 2003-05-13 Ericsson Inc. Methods and systems for providing group calls with reduced setup times
US6532224B1 (en) 1999-05-10 2003-03-11 Ericsson, Inc. Method, systems, and terminals for assigning control channel time slots for group and individual pages
US6577874B1 (en) 1999-05-10 2003-06-10 Ericsson Inc. Methods and systems for providing temporary identification numbers for mobile terminals
US6449491B1 (en) * 1999-05-10 2002-09-10 Ericsson Inc. Apparatus and methods for conducting group calls in wireless communications systems
US6671515B1 (en) * 2000-06-06 2003-12-30 Motorola, Inc. Method and apparatus for selecting communication cells in a wireless communication system
DE102004049907A1 (en) * 2004-10-13 2006-04-20 Infineon Technologies Ag A method of requesting or allocating a push-to-talk voice right and / or requesting or notifying queue information, push-to-talk client unit, push-to-talk control server computer, and decision unit
US8279991B2 (en) 2008-10-03 2012-10-02 Motorola Solutions, Inc. Method of efficiently synchronizing to a desired timeslot in a time division multiple access communication system
US8358968B2 (en) 2008-10-03 2013-01-22 Motorola Solutions, Inc. Method for selecting a channel to be monitored by subscriber units that are idle in a communication system
US8503409B2 (en) 2010-04-15 2013-08-06 Motorola Solutions, Inc. Method for direct mode channel access
US8599826B2 (en) 2010-04-15 2013-12-03 Motorola Solutions, Inc. Method for synchronizing direct mode time division multiple access (TDMA) transmissions
US8462766B2 (en) 2011-03-07 2013-06-11 Motorola Solutions, Inc. Methods and apparatus for diffusing channel timing among subscriber units in TDMA direct mode

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5101502A (en) * 1990-04-02 1992-03-31 Motorola, Inc. Wide area trunked channel busy override

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1314283C (en) * 2003-09-05 2007-05-02 华为技术有限公司 Group call area setting method for cluster communication system
CN101165675B (en) * 2006-10-17 2012-09-12 成都芯源系统有限公司 System and method for implementing a single wire serial protocol
CN102172068A (en) * 2008-10-03 2011-08-31 摩托罗拉解决方案公司 Method for trunking radio frequency resources

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GB2271690B (en) 1996-09-11

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