CN100455070C - Establishment and control for CDMA digital packet calling - Google Patents
Establishment and control for CDMA digital packet calling Download PDFInfo
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Abstract
The method comprises: when establishing a call; the initial end sends the call request to the network side; PHR authenticates the initial end and informs the result to PDS; according to the authentication result, PDS sends the paging request by using traditional group call approach to all BSCs in the cluster scheduling service area; after receiving the paging request, BSC informs all BTS under his control to establish shared forward and backward service channel, and to establish STDL to PDS; after establishing radio channel, BSC informs the PDS and cyclically broadcasts paging message of GID addressing on the paging channel; according to the information in the paging message, the terminals in the cluster are captured as forwarding service channel, and automatically access to the cluster; after PDS receives the establishment completing message sent from BSC, the call is successfully established. The invention can implement the un-limited and fast access of CDMA digital trunking system.
Description
Technical field
The present invention relates to digital cluster system, particularly a kind of in the digital cluster system of CDMA standard to the control method of trunked call process.
Background technology
Mobile communication technology has developed into the third generation, and wherein trunking communication becomes a kind of indispensable communication traffic day by day.Trunking communication is meant a kind of dispatching communication mode of special use, comprises special-purpose commander and dispatching communication, and in use cluster user can add calling simultaneously, and conversation is carried out with single worker or half-duplex mode.
Trunking communication has been experienced simple intercom system to single base station mini system, arrive the development course of big capacity multizone system again, after experienced again from the simulation cluster to the leap of Digital Clustering, make trunking communication all can adopt more reliable digital processing mode at the aspects such as multi-access mode, speech coding, modulation-demodulation technique, simultaneous techniques, error-detection error-correction and diversity technique of signalling coding, employing.Two kinds of digital cluster systems of extensive use at present are based on TDMA (Time Division Multiple Access, time division multiple access) iDEN of technology (integrated Digital Enhanced Network, Integrated Digital Enhanced Network) and TETRA (Terrestrial Trunked Radio, land trunked radio), these system applies all belong to special-purpose cluster in specific department and unit, for promoting the sizable application of digital cluster system, further boost the efficiency of frequency resources utilization simultaneously, trunked communication system a new application trend occurred on using, the unification that exactly a plurality of digital cluster systems combined is used and is managed, thereby be able to share channel and channel, share the overlay area, communication service, carry on a shoulder pole the purpose of expense altogether, cluster application realizes the common network operation from developing into towards indivedual professional users towards a plurality of group users the most at last.
Call out in group system and be limited in certain territorial scope usually, if colony terminal exceeds this limited field, system will not provide trunked call service, and this limited field is called dispatcher-controlled territory.Can be according to the actual needs of the network planning, the overlay network of system is divided into some dispatch location area (Dispatch Location Area, DLA), dispatch location area can be whole network, it also can be the part of network, with the cellular cell in the wireless communication field is least unit, the designated dispatch service of trunked call zone (Dispatch Service Area, DSA), the dispatch service zone is the set of dispatch location area, when trunked call exceeded the dispatch service zone of system's appointment, system just no longer provided service for it.
Trunking communication has promoted existing GSM (Global System forMobile Communications by private network to the development of common network, global system for mobile communications), realize the research of Clustering on CDMA (Code Division MultipleAccess, the code division multiple access) network.
Application number is the control method that discloses a kind of CDMA2000 digital cluster system calling procedure in the Chinese patent application of CN200410027538, and its calling procedure comprises: (1) terminal sends call setup request message, requires to activate group; (2) system handles the setup requests of terminal; (3) group enters talking state, and promptly group activates, and perhaps access success is set up, and the terminal of successful paging this moment can be applied for right to speak; (4) demanding terminal finishes conversation, sends the end of conversation request, requires system to discharge all resources of this calling, and putting group is non-activation; (5) system handles the end of conversation request.
This method is when carrying out trunked call, for each cluster user terminal is distributed air traffic channel separately, user terminal is by the paging mode by existing CDMA2000 1X normal voice calls, promptly press IMSI (International Mobile Subscriber Identity, international travelling carriage identification code) paging goes into to call out, and what be that the terminal distribution channel also adopts when terminal insert to be called out is the channel allocation mode of normal voice calls, this like this trunked call even can break through geological restraint to realize roaming in the mode of independent allocated channel, show differently, be referred to as the enhanced group calling in the literary composition with existing professional trunked call.By this group calling mode, its channel resource of eating dishes without rice or wine takies relevant with the group user number, and establishing number of users is N, and then channel uses number to be 2N+1.
In addition, the call of this enhanced group calling comprises end side, base station side, and network side three parts's detailed process is that the calling procedure of each terminal is controlled when wherein calling out control.In the call establishment Shen, be by IMSI mode (enhanced) paging, user terminal is paged singly to be gone into to call out, and what be that the terminal distribution channel also adopts when terminal inserts is the allocated channel mode of normal voice calls, this like this mode just must need this terminal to be subjected to the control of mobile switching centre (MSC), increase the Signalling exchange with the irrelevant network element of cluster, inevitably increased call duration.
Therefore, adopt the control mode of this group calling, interface-free resources take linear growth with N, connecting time is long, it is many to take resource, finite capacity, the demand that can't satisfy limitless volumes, inserts fast.In the place that group user is concentrated, as megaevent, need insert a large number of users simultaneously especially, the group calling mode of this enhanced just can not reach requirement.
Summary of the invention
The technical problem to be solved in the present invention is the call-establishing method that proposes a kind of CDMA traditional packet digital calling, can realize CDMA digital cluster system limitless volumes and access fast.
In order to solve the problems of the technologies described above, the invention provides a kind of call-establishing method of CDMA traditional packet digital calling, be applied to the digital cluster system of CDMA standard, this method may further comprise the steps:
(a) work the person of exhaling and select a group to make a call, work exhale that terminal sends rise to call for to ask and send to network side through base station sub-system;
(b) dispatching home location register is carried out authentication and is notified dispatch server with authenticating result this terminal, and dispatch server judges that when authentication was passed through, all base station controllers in this group scheduling service area sent the paging request of traditional group calls;
(c) after base station controller is received described paging request, notify its all the shared forward traffic channel of base station transceivers foundation and shared reverse traffic channels down, and the cluster data link is shared in the special use between foundation and the dispatch server;
(d) base station controller is set up successfully back notice dispatch server at wireless channel, and on paging channel periodically broadcast transmission with the beep-page message of group id addressing, the terminal that belongs to this group is the upright shared forward traffic channel of this establishment according to the information capture in the beep-page message, automatically in the access group;
(e) after dispatch server had received that message is finished in the foundation of exhaling base station controller to send, the call setup success entered talking state.
Further, above-mentioned call-establishing method also can have following characteristics: in the described step (a), working the person of exhaling selects one to support the group in scheduling district, the present place of this terminal to make a call by a service identifiers, this service identifiers is set in the following manner: base station sub-system sends Overhead Message to colony terminal always, carries dispatch location area information; After colony terminal is received Overhead Message, the dispatch service zone that each group in the group information of wherein dispatch location area and the storage of this machine is supported relatively, if the present place of colony terminal dispatch location area belongs to the dispatch service zone of certain group, then the service identifiers with this group is changed to " can serve ".
Further, above-mentioned call-establishing method also can have following characteristics: in the described step (b), dispatching home location register has also been returned the group attribute of exhaling group when dispatch server returns authenticating result; Dispatch server just sends the paging request of traditional group call to the base station controller in this group scheduling service area when judging that this group attribute is the traditional type group.
Further, above-mentioned call-establishing method also can have following characteristics: in the described step (b), dispatch server is the traditional group call paging request of band caller information to the base station controller transmission that works the person of exhaling place, what exhale that base station controller sends to all in this group scheduling service area non-is the traditional group call paging request of not being with caller information, had in the paging request of described band caller information and exhaled terminal information, rise exhale base station controller to receive this paging request after, except the shared channel of setting up traditional type, also notified the reverse fundamental service channel of exhaling terminal can use timesharing to share.
Further, above-mentioned call-establishing method also can have following characteristics: in the described step (a), work rising of exhaling that terminal sends and call for and have its current scheduling lane place thresholding in asking; In the described step (b), described dispatch server judges that also described is exhaled deployment position district, colony terminal place whether to exhale in the dispatch service zone of group rising, if, all base station controllers in this group scheduling service area send the paging request again, otherwise refusal is called out, and finishes.
Further, above-mentioned call-establishing method also can have following characteristics: in the described step (c), the shared forward traffic channel of setting up comprises a shared Forward Fundamental Channel and a shared forward direction supplementary service channel, and the shared reverse traffic channel of foundation comprises that at least two are oppositely shared fundamental service channel.
The technical problem to be solved in the present invention is the calling-control method that proposes a kind of CDMA traditional packet digital calling, can realize CDMA digital cluster system limitless volumes and access fast.
In order to solve the problems of the technologies described above, the invention provides a kind of calling-control method of CDMA traditional packet digital calling, be applied to the digital cluster system of CDMA standard, this method may further comprise the steps:
(a) work the person of exhaling and select a group to make a call, work exhale that colony terminal sends rise to call for to ask and send to network side through base station sub-system;
(b) dispatching home location register is carried out authentication and is notified dispatch server with authenticating result this terminal, and dispatch server judges that when authentication was passed through, all base station controllers in this group scheduling service area sent the paging request of traditional group calls;
(c) after base station controller is received described paging request, notify its all the shared forward traffic channel of base station transceivers foundation and shared reverse traffic channels down, and the cluster data link is shared in the special use between foundation and the dispatch server;
(d) base station controller is set up successfully back notice dispatch server at wireless channel, and on paging channel periodically broadcast transmission with the beep-page message of group id addressing, the terminal that belongs to this group is the upright shared forward traffic channel of this establishment according to the information capture in the beep-page message, automatically in the access group;
(e) after dispatch server has received that message is finished in the foundation of exhaling base station controller to send, the call setup success, signaling and voice by sharing the transmission of forward direction and reverse traffic channel, are shared the transmission of cluster data link by described special use during conversation between base station side and network side between end side and base station side;
(f) after end side, base station side or network side make a call and discharge, dispatch server is called out to all base station controllers transmissions of this calling and is released order, base station controller discharges interface-free resources and the cluster data link is shared in described special use, dispatch server is removed the network side resource, finishes call.
Further, above-mentioned calling-control method also can have following characteristics: in the described step (a), working the person of exhaling selects one to support the group in scheduling district, the present place of this terminal to make a call by a service identifiers, this service identifiers is set in the following manner: base station sub-system sends Overhead Message to colony terminal always, carries dispatch location area information; After colony terminal is received Overhead Message, the dispatch service zone that each group in the group information of wherein dispatch location area and the storage of this machine is supported relatively, if the present place of colony terminal dispatch location area belongs to the dispatch service zone of certain group, then the service identifiers with this group is changed to " can serve ".
Further, above-mentioned calling-control method also can have following characteristics: in the described step (b), dispatching home location register has also been returned the group attribute of exhaling group when dispatch server returns authenticating result; Dispatch server just sends the paging request of traditional group call to the base station controller in this group scheduling service area when judging that this group attribute is the traditional type group.
Further, above-mentioned calling-control method also can have following characteristics: in the described step (b), dispatch server is the traditional group call paging request of band caller information to the base station controller transmission that works the person of exhaling place, what exhale that base station controller sends to all in this group scheduling service area non-is the traditional group call paging request of not being with caller information, had in the traditional group call paging request of described band caller information and exhaled terminal information, after working the traditional group call of exhaling base station controller to receive the band caller information, except the shared channel of setting up traditional type, also notified the reverse fundamental service channel of exhaling terminal can use timesharing to share.
Further, above-mentioned calling-control method also can have following characteristics: in the described step (c), the shared forward traffic channel that base station transceiver is set up comprises a shared Forward Fundamental Channel and a shared forward direction supplementary service channel, described step (e) is when conversation, base station side sends voice by this Forward Fundamental Channel to end side, perhaps voice add signaling, and base station side sends signaling by this shared forward direction supplementary service channel to end side.
Further, above-mentioned calling-control method also can have following characteristics: in the described step (c), the shared reverse traffic channel that base station transceiver is set up comprises that at least two are shared reverse fundamental service channel, during described step (e) conversation, the terminal that obtains right of speech is monopolized reverse fundamental service channel transmission backward signaling and the voice that a timesharing is shared, and all do not have this group colony terminal of right of speech all to use the one or more reverse fundamental service channel of sharing simultaneously to send backward signaling.
Further, above-mentioned calling-control method also can have following characteristics: during described step (e) conversation, the terminal that obtains right of speech sends to base station sub-system by the shared reverse traffic channel of monopolizing with voice, base station sub-system is shared the cluster data link through special use and is sent to dispatch server, dispatch server is transmitted to all base station controllers of having set up special-purpose shared cluster data link, these base station controllers have been set up this base station transceiver of calling out shared channel resources distribution voice to all again, are sent to the colony terminal that has inserted by sharing Forward Fundamental Channel by these base station transceivers.
Further, above-mentioned calling-control method also can have following characteristics: be further divided into following steps in the described step (f):
(f1) after end side, base station side or network side make a call and discharge, dispatch server is called out to all base station controllers transmissions of this calling and is released order, dispatch server judges when this user has the group calling of release authority that all base station controllers send to call out and release order in this is called out;
(f2) after base station controller receives that the calling of dispatch server is released order, notify its following all base station transceivers to send the notice of this end of calling, cancel shared forward traffic channel, and discharge the shared cluster data link of this call-specific to the dispatch server application for this call distribution;
(f3) special use of dispatch server response base station controller is shared the cluster data link and is discharged request, no longer transmits voice;
(f4) base station controller is after interface-free resources and special-purpose shared cluster data link release are finished, return Release complete to dispatch server, after dispatch server is received this this message of calling out all base station controllers transmissions, remove the network side resource, this calls out release the notice dispatching home location register, finishes.
Further, above-mentioned calling-control method also can have following characteristics: after described step (e) dispatch server had received that the wireless channel of exhaling base station controller is set up success message, the notice dispatching home location register began to charge; Behind the Release complete of described step (f) dispatch server As-received station control, the notice dispatching home location register finishes to charge.
As from the foregoing, the inventive method is applicable to the calling procedure control under quick foundation and the limitless volumes situation, the user is by by group id (GID during call setup, Group ID) paging simultaneously goes into to call out, and not to the independent allocated channel of user, the control that has also just broken away from MSC, this will significantly shorten the connecting time of existing call.
In addition, the present invention is in call establishment, and network side only is concerned about the foundation of air resource and whether no longer stresses concrete terminal by incoming call, and also there is caller and called in this mode, but network controls is base station rather than caller/called.
Further, the present invention is the Channel Sharing mode that adopts traditional group call on the mode of channel resource allocation, make the digital cluster system of number of users in original limited and the sub-district, become not limited systems of single group user number, greatly improved the power system capacity of trunking communication, reduced the system congestion probability of trunking communication, can hold a large number of users simultaneously and insert.
The present invention is by above-mentioned a series of control method, can realize eating dishes without rice or wine when group call is set up resource allocation and number of users is irrelevant, finally reach cluster list sub-district limitless volumes, meet growing trunking communication demand, fundamentally solved the problem of digital cluster system cell capacity restriction.
Description of drawings
Fig. 1 is the network structure of embodiment of the invention method.
Fig. 2 is the flow chart that end message upgrades in the embodiment of the invention method.
Fig. 3 is the flow chart of call setup in the embodiment of the invention method.
Fig. 4 is the flow chart of member's conversation in the embodiment of the invention method.
Fig. 5 calls out the flow chart that discharges in the embodiment of the invention method.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is further introduced, but not as a limitation of the invention.
With reference to shown in Figure 1, be the network structure of support CDMA traditional packet digital calling control method of the present invention, its chief component is described below earlier:
MS: colony terminal, also abbreviate terminal in the literary composition as, can support storing subscriber information, group information, dispatcher-controlled territory are judged, the terminal equipment of group services such as response traditional group call paging.
BSS: base station sub-system, comprise the base station transceiver (BTS) of supporting trunked call, base station controller (BSC) and with the mutual dispatching client (PDC) of network side;
PDS: dispatch server, realize the calling control and the right of speech management of trunked call;
PHR: dispatching home location register, the log-on message and the positional information of preservation cluster user and group realize authentication, mandate and billing function to cluster user, and the position is upgraded and group management function.
In the literary composition, PDS and PHR are referred to as network side or dispatching patcher.System side has then comprised base station sub-system and dispatching patcher.
In order to realize limitless volumes and insert fast that the present invention adopts the resource distribution mode of sharing wireless channel.A kind of trunking communication method of CDMA2000 mobile communcations system in being the PCT international application of WO2004/110085 A1, publication number is disclosed, by base station system is public forward traffic channel of same group allocation under same sub-district, group's terminal uses public Long Code Mask to monitor public forward traffic channel, is oppositely adopting a shared service channel to provide the reverse traffic support by the mode of scheduling for group's terminal.It is to set up forward direction and reversed shared channel between terminal and the base station that this patent emphasis has been illustrated in wireless side, capture terminal forward direction shared service channel inserts the mode of calling out, but in fact this resource allocation methods also is difficult to use (hereinafter can discuss to this) in real system, and this patent application does not relate to end side, base station side and the network side control mode in group-calling process yet in addition.For example, between base station side and end side, set up what forward directions and reverse shared service channel, how to utilize these Channel Transmission voice and signalings; How network side realizes the paging to terminal, or the like.
For being different from the enhanced group calling mode of existing CDMA mode cluster system, in the literary composition method of calling of the present invention is called traditional group call.Introduce following the inventive method relevant end message renewal process, call establishment, member's communication process and end of calling process below.
The end message renewal process
In order to improve the access speed of system, realize that terminal is according to functions such as group identification (GID) response paging and the limited callings of realization dispatcher-controlled territory in the group calling, the content that needs on the terminal to write down in the informational needs and PHR on record corresponding information and the terminal is consistent, PHR increases, deletes and revises after the information of terminal correspondence, need carry out corresponding renewal to end message, or be referred to as information synchronization.
Present embodiment end message renewal process may further comprise the steps as shown in Figure 2:
Step 201:MS initiates the position register request of group service;
Carrying out information updating needs terminal to be under the idle condition, and PDS operates after the PTT business state is advanced in its paging again.If (service condition comprises: common CDMA 1X speech business to be in service condition based on the terminal of CDMA2000 technology, data service, PTT (Push-To-Talk) business), it will be very slow sending than the message of large information capacity on control channel, thereby it is long to cause taking resource, if will cause mixing of function, influence the release of basic call and utilize terminal existing business channel to send lastest imformation.If because can carry out location registers then inevitable not under service condition based on the terminal of CDMA technology, present embodiment is initiated the starting point of location registers as the end message renewal process to terminal.
Step 202:PHR upgrades registration through PDS to the MS home position and accepts message;
This message informing MS registers successfully this, corresponding icon can be arranged as successfully showing on terminal interface.
Step 203:PHR judges that the information change sign of this MS has or not set, if set illustrates that then this MS needs information updating, sends the end message update notification of this MS to PDS;
The information change sign of this MS whether set comes from this MS that PHR stores and needs updated information to have or not change, has been modified if relate to the information of this MS, then this flag set.
Step 204: after server PDS receives the end message update notification of PHR,, then this user is initiated paging if this MS is in idle condition;
The paging here is the enhanced paging, because this only upgrades at this user.
Step 205:MS returns to system and pages reply, and the BSS system sets up Traffic Channel for it, and the foundation of notice PDS Traffic Channel is finished;
System also is an enhanced for the Traffic Channel that this MS sets up, and is only monopolized by this MS.
After step 206:PDS learns that the Traffic Channel foundation that is updated the user is finished, to PHR request lastest imformation;
Step 207:PHR returns the end message that needs this MS to revise to PDS;
End message is divided into user profile and group information, and wherein user profile mainly is the dispatcher-controlled territory under this MS, interruption-free, MDN (Mobile Directory Number, Mobile Directory Number) information etc., group information mainly are the GID of group, GMDN (Group MDN, the group Mobile Directory Number), group name, member's priority, group scheduling zone etc., user profile and group information content are separate, can upgrade respectively.
Step 208:PDS sends the end message update inquiry information to MS, carries the end message that needs modification;
Step 209:MS is according to the requirement in the end message update inquiry information, and carrying out increases accordingly, after the modification, deletion action, returns end message to PDS and upgrade response message, and carry the result of renewal;
After step 210:PDS received that end message that MS returns upgrades response message, notice PHR end message upgrades to be finished;
Step 211:PDS sends release message to MS;
Step 212:MS returns and discharges response to BSS transmission Release complete;
After step 213:BSS receives the Release complete of terminal, discharge the wireless side resource and return Release complete, finish end message and upgrade to PDS.
At some in particular cases, for example, when dynamically recombinating, end message need upgrade in time during the individual user in the deletion group.The trigger point of this renewal judges and when this MS is not in service condition this user is initiated paging that execution in step 205 then after can knowing corresponding change by PDS, subsequent step is identical with above-mentioned flow process.
Call establishment
Before MS called out, BSS sent Overhead Message to MS always, and for the MS that supports traditional group call, base station side need send Overhead Message, and MS receives this message and just calculates capture systems, will be with dispatch location area information (DLA) in the Overhead Message.MS is provided with a service identifiers for each group, after receiving Overhead Message, the dispatch service zone (DSA) that each group in the group information of DLA in the message and the storage of this machine is supported is compared, if the present residing DLA of MS belongs to the DSA of certain group, then the service identifiers with this group is changed to " can serve ".
Call establishment in the present embodiment method as shown in Figure 3, wherein the reciprocal process of network side and base station side may further comprise the steps:
Step 301: work the person of exhaling and select certain to support this terminal to dispatch the group in district (promptly being designated the group of " can serve ") at present to make a call, rise and exhale terminal to send to call for to ask to BSS;
Above-mentioned traditional type and enhanced resource distribution mode are transparent for the user, because these two kinds of callings are actually the different resource distribution mode of system side, the user need not to know such difference, so, the operation of user on terminal, it is identical working the mode of exhaling.Certainly, owing to will use this terminal current scheduling band of position thereafter, so will have its current scheduling lane place thresholding in the signaling rising to exhale.
If the user has selected not support this terminal to dispatch the group in district at present, can point out error message by end side, perhaps to attempt inserting, network side also can be made judgement to this.
Step 302: work to call for to ask through BSS sending to PDS, PDS request PHR carries out authentication, and receives authenticating result;
Calling mainly is to judge that this terminal has had or not call right in the authentication of PHR, will not rise in the group of exhaling at it.If when having two kinds of groups of traditional type and enhanced attribute simultaneously, when PDS returns authenticating result, also will be with the attribute notice PDS of paging group of institute.
After step 303:PDS receives the authenticating result that PHR returns, if working what exhale is the traditional type group, whether the scheduling district that then continues to judge this present place of terminal is in the dispatch service zone of the group that authentication is returned, if, then PDS can call out this group, send the traditional group call paging request of band caller information to the BSC that works the person of exhaling place, exhale BSC to send not traditional group call paging request with caller information to all in this group scheduling service area non-;
If deployment position district, the present place of terminal is not in the dispatch service zone of the group that authentication is returned, then refusal is called out.But in another embodiment,, also can promptly provide scheduling to distinguish not restricted function for it provides service if system has merged the function of enhanced group calling.
Here so-called " traditional type " group calling paging request (band GID) only is meant that indicating this time calling in the paging request is traditional group call, and BSC will connect the resource distribution mode of traditional group call and set up wireless channel.Wherein with caller information be not with the difference of the paging request of caller information, the paging request of band caller information has had the traditional group call of exhaling terminal information, BSC to receive the band caller information and also notified the reverse fundamental service channel of exhaling terminal can use timesharing to share except the shared channel of setting up traditional type.
After step 304:BSC receives the group calling paging of PDS transmission, set up this call-specific to the PDS request on the one hand and share cluster data link (STDL), PDS has responded the STDL link setup request of exhaling BSC, sets up the special use of this calling and shares the cluster data link;
The special-purpose cluster data link of sharing is the carrying that voice are transmitted in the CDMA mode cluster system, and its life cycle is identical with current calling, and just this STDL finishes just can be released in group calling.If the situation of unusual release is arranged, base station side and network side can be monitored at any time, rebuild.
On the other hand, BSC notifies its following all BTS to set up radio channel resource, comprise 1 Forward Fundamental Channel, 1 forward direction supplementary service channel and 2 reverse fundamental service channels, after BTS wireless channel under the BSC is set up successfully, finish message informing PDS by foundation, simultaneously, on paging channel periodically broadcast transmission with the group calling beep-page message of GID addressing;
MS paging receiving message, judge be the traditional group call paging after, mate according to the GID in the GID in the paging and the institute's storage sets information, if the match is successful, then according to the Forward Fundamental Channel of having set up for this group in the information capture affiliated areas such as Long Code Mask in the call signaling, forward direction supplementary service channel, automatically in the access group, need not return enhanced to BSS and insert response signaling;
That is, BSS need not manage called whether the access as long as send the beep-page message (being broadcast channel assigned message) of traditional group call on paging channel.
Step 305:PDS received and exhaled the foundation of BSC to finish message, and the call setup success enters talking state, and PDS notice PHR begins to charge.
Needed only and exhaled BSC to finish the foundation of wireless channel and STDL, just can think to call out and set up, because under this BSC, promptly may exist a plurality of group user will be as called.
By above-mentioned steps as seen, network controls of the present invention be base station sub-system (BSS), the user is according to being gone into to call out by GID paging simultaneously during call setup, and channel is shared fully, channel set up need not mobile switching centre (MSC) participation, shortened existing call greatly and set up turn-on time in the process.Simultaneously, in call establishment, whether network side only is concerned about the foundation of air resource and is not inserted stressing concrete terminal, what network station was controlled is the base station, and the point-to-point PPP connection that need not to set up through terminal, thereby also reduced the connect hours, the shared fully limitless volumes that has realized terminal in this system again of while channel.Therefore can realize limitless volumes and access fast.
Member's communication process
Behind the call setup, rise and exhale terminal at first to obtain right of speech, whole system begins to transmit voice, and in communication process, right of speech can discharge and apply for that the right to apply for words person is obtaining conversation power through end side, base station side, the tripartite mutual back of network side.
At present embodiment, Forward Fundamental Channel is used for sending voice, and forward direction supplementary service channel is used for sending signaling.Voice and signaling are separately sent, in the time of can avoiding sending a large amount of speech data, cause the conflict of signaling, thereby cause communication failure.But in another embodiment, BSS according to the data traffic of business also can by fundamental service channel when terminal sends voice, the signaling that will the send to terminal transmission that is packaged together.
Article two, one of reverse fundamental service channel is shared simultaneously by all terminals of no right of speech in communication process, to send backward signaling, as the right to apply for words signaling, another is that timesharing is shared, promptly temporarily monopolize,, also send backward signaling to send voice by the terminal that obtains right of speech.So just can avoid when sending a large amount of speech datas, causing the signaling conflict on the same channel.
In another embodiment, can set up more oppositely fundamental service channel calls out to admit more terminal to insert.
Below the communication process of describing has been comprised application and discharged right of speech, but this process is not necessary in once conversing.In order to describe this process, suppose that MS_A is held terminal by the party A-subscriber, its application has also temporarily obtained conversation power, and on behalf of all, MS_B temporarily do not have the terminal of right of speech.
As shown in Figure 4, this process may further comprise the steps:
Step 401: user A passes through the terminal MS of holding _ A and applies for right to speak, through BSS to PDS application sending the right words signaling;
User A is if caller can be sent out this application when group calling is just set up, and PDS sets up the back according to PTT (Push To Talk)---the PoC principle is authorized it right to speak acquiescently in group calling.
Backward signaling is to send to BSS by the reverse fundamental service channel of sharing simultaneously, and BSS sends to PDS through STDL again.
After step 402:PDS received this application, the information that obtains from PHR during according to call setup judged whether it has the authority of speaking, if the authority of speaking is arranged, PDS sends to speak to MS_A and authorizes indication;
The forward direction signaling sends to corresponding BSS by PDS through STDL, and BSS sends by sharing forward direction supplementary service channel again, receives this signaling by terminal on this channel.
Need to prove, member's conversation is subjected to the restriction of talking state machine, the essence of talking state machine is the queuing mechanism that carries out according to right of speech priority in user's group, if a plurality of terminal to apply rights to speak is arranged then right to speak is authorized the highest terminal of right of speech priority of prior setting, usually caller is come the foremost, and in time authorizes right of speech to it.
Step 403:MS_A confirms to the PDS return authorization;
Step 404:PDS receives that right of speech affirmation all non-users of speaking in calling out of MS_A send " having the user to speak " and point out, and this prompting will be sent in the dispatch service zone (DSA) of calling out by GID in traditional group call;
Just monopolized a reverse fundamental service channel that timesharing is shared when MS_A back coupling power is confirmed, in communication process, the terminal of acquisition right of speech is monopolized the shared reverse fundamental service channel of a timesharing and is sent backward signaling and voice.After MS_A sends to BSS by this backward channel with voice, BSS shares the cluster data link by special use and sends to PDS, this PDS shares all BSC forwardings of cluster data link again to the special use of having set up this calling, BSC has set up this BTS that calls out shared channel resources distribution voice to all again, sends to terminal (MS_B) by shared Forward Fundamental Channel under it after BTS receives again.
The reverse fundamental service channel of sharing when all under a BTS do not have this group terminal of right of speech all to use to have distributed sends backward signaling.
Step 405: when user A wanted to abandon right of speech, operation MS_A sent to PDS and discharges the right to apply for words signaling, withdraws from the backward channel that it is monopolized simultaneously;
Step 406:PDS discharges to MS reply power and confirms;
Step 407:PDS all users in calling out send " no user is spoken " prompting, and in traditional group call, this prompting will be sent in the DSA scope of calling out by GID.
The end of calling process
Call out discharging may be by initiating in many ways, and the promoter can be divided into end side, base station side and network side, is released to example with what terminal was initiated here.Suppose that MS_A is held terminal by the party A-subscriber and initiate release in communication process, on behalf of all, MS_B temporarily do not have the terminal of right of speech.As shown in Figure 5, the end of calling process may further comprise the steps:
Step 501: when user A thought terminating group, operation MS_A sent call release request, is forwarded to PDS through BSS;
After step 502:PDS received this release request, if this user has the group calling of release authority, then all BSC transmission callings were released order in this is called out;
Enhanced finishes signaling and is actually and issues terminal in each group, and the traditional group call network controls is base station rather than terminal, like this this to release order actual be to notify base station side and need not be equally notify each member in the group with enhanced, also no longer distinguished during release and exhaled BSC and non-to exhale BSC.
After step 503:BSC receives that the calling of PDS is released order, notify its down all BTS send this call termination notification at forward direction supplementary service channel, discharge interface-free resources, and discharge this call-specific to the PDS application and share cluster data link (STDL);
Call termination notification is that terminal oneself goes to receive to forward direction supplementary service channel.
When BSC discharges interface-free resources, notify its down all BTS cancel forward shared channel into this call distribution, when the forward direction shared channel cancel finish after, do not catch less than the forward shared channel of its sub-district, place then withdraw from service condition automatically if also do not withdraw from the MS_B of this calling.The MS_B that withdraws from this calling can accept other paging after passing through required pilot tone of CDMA and synchronous process more once more.
The STDL of step 504:PDS response BSS discharges request, no longer transmits voice;
Step 505:BSC interface-free resources and STDL link discharge finish after, return Release complete to PDS;
After step 506:PDS receives this Release complete of calling out all BSC, remove the network side resource, this calls out release notice PHR, finishes to charge.
When calling release is initiated by the base station, particularly work as BSC and find that the wireless side of this calling is unusual, then can apply for finishing this traditional group call, PDS receives that the processing after this request is identical with above-mentioned steps 502～506.Calling also is the same when discharging by the dispatching desk of network side or PDS initiation.
In sum, the present invention proposes a kind of in the Digital Clustering of realizing based on the CDMA2000 technology control method to traditional group call, this method is applicable to traditional type called out fast and inserts the control of Channel Sharing and limitless volumes etc.This method has not only made full use of existing related specifications in the CDMA2000 technology, and by direct control to the base station, realize the quick access and the Channel Sharing of terminal, reached the purpose that reduces SRT and enhanced system capacity, met growing trunking communication demand.
Claims (15)
1, a kind of call-establishing method of CDMA traditional packet digital calling is applied to the digital cluster system of CDMA standard, and this method may further comprise the steps:
(a) work the person of exhaling and select a group to make a call, work exhale that terminal sends rise to call for to ask and send to network side through base station sub-system;
(b) dispatching home location register is carried out authentication and is notified dispatch server with authenticating result this terminal, and dispatch server judges that when authentication was passed through, all base station controllers in this group scheduling service area sent the paging request of traditional group calls;
(c) after base station controller was received described paging request, the cluster data link was shared in the special use that described base station controller is set up between itself and the dispatch server, and notify its down all base station transceivers set up and share forward traffic channel and shared reverse traffic channels;
(d) base station controller is set up successfully back notice dispatch server at wireless channel, and on paging channel periodically broadcast transmission with the beep-page message of group id addressing, the terminal that belongs to this group is the upright shared forward traffic channel of this establishment according to the information capture in the beep-page message, automatically in the access group;
(e) after dispatch server had received that message is finished in the foundation of exhaling base station controller to send, the call setup success entered talking state.
2, call-establishing method as claimed in claim 1, it is characterized in that, in the described step (a), working the person of exhaling selects one to support the group in scheduling district, the present place of this terminal to make a call by a service identifiers, this service identifiers is set in the following manner: base station sub-system sends Overhead Message to colony terminal always, carries dispatch location area information; After colony terminal is received Overhead Message, the dispatch service zone that each group in the group information of wherein dispatch location area and the storage of this machine is supported relatively, if the present place of colony terminal dispatch location area belongs to the dispatch service zone of certain group, then the service identifiers with this group is changed to " can serve ".
3, call-establishing method as claimed in claim 1 is characterized in that, in the described step (b), dispatching home location register has also been returned the group attribute of exhaling group when dispatch server returns authenticating result; Dispatch server just sends the paging request of traditional group call to the base station controller in this group scheduling service area when judging that this group attribute is the traditional type group.
4, call-establishing method as claimed in claim 1, it is characterized in that, in the described step (b), dispatch server is the traditional group call paging request of band caller information to the base station controller transmission that works the person of exhaling place, what exhale that base station controller sends to all in this group scheduling service area non-is the traditional group call paging request of not being with caller information, had in the paging request of described band caller information and exhaled terminal information, after working the paging request of exhaling base station controller to receive the band caller information, except the shared channel of setting up traditional type, also notified the reverse fundamental service channel of exhaling terminal can use timesharing to share.
5, call-establishing method as claimed in claim 1 is characterized in that, in the described step (a), works rising of exhaling that terminal sends and calls for and have its current scheduling lane place thresholding in asking; In the described step (b), described dispatch server judges that also described is exhaled deployment position district, colony terminal place whether to exhale in the dispatch service zone of group rising, if, all base station controllers in this group scheduling service area send the paging request again, otherwise refusal is called out, and finishes.
6, call-establishing method as claimed in claim 1, it is characterized in that, the shared forward traffic channel that described step (c) is set up comprises a shared Forward Fundamental Channel and a shared forward direction supplementary service channel, and the shared reverse traffic channel of foundation comprises that at least two are oppositely shared fundamental service channel.
7, a kind of calling-control method of CDMA traditional packet digital calling is applied to the digital cluster system of CDMA standard, and this method may further comprise the steps:
(a) work the person of exhaling and select a group to make a call, work exhale that colony terminal sends rise to call for to ask and send to network side through base station sub-system;
(b) dispatching home location register is carried out authentication and is notified dispatch server with authenticating result this terminal, and dispatch server judges that when authentication was passed through, all base station controllers in this group scheduling service area sent the paging request of traditional group calls;
(c) after base station controller is received described paging request, notify its all the shared forward traffic channel of base station transceivers foundation and shared reverse traffic channels down, and the cluster data link is shared in the special use between foundation and the dispatch server;
(d) base station controller is set up successfully back notice dispatch server at wireless channel, and on paging channel periodically broadcast transmission with the beep-page message of group id addressing, the terminal that belongs to this group is the upright shared forward traffic channel of this establishment according to the information capture in the beep-page message, automatically in the access group;
(e) after dispatch server has received that message is finished in the foundation of exhaling base station controller to send, the call setup success, signaling and voice by sharing the transmission of forward direction and reverse traffic channel, are shared the transmission of cluster data link by described special use during conversation between base station side and network side between end side and base station side;
(f) after end side, base station side or network side make a call and discharge, dispatch server is called out to all base station controllers transmissions of this calling and is released order, base station controller discharges interface-free resources and the cluster data link is shared in described special use, dispatch server is removed the network side resource, finishes call.
8, calling-control method as claimed in claim 7, it is characterized in that, in the described step (a), working the person of exhaling selects one to support the group in scheduling district, the present place of this terminal to make a call by a service identifiers, this service identifiers is set in the following manner: base station sub-system sends Overhead Message to colony terminal always, carries dispatch location area information; After colony terminal is received Overhead Message, the dispatch service zone that each group in the group information of wherein dispatch location area and the storage of this machine is supported relatively, if the present place of colony terminal dispatch location area belongs to the dispatch service zone of certain group, then the service identifiers with this group is changed to " can serve ".
9, calling-control method as claimed in claim 7 is characterized in that, in the described step (b), dispatching home location register has also been returned the group attribute of exhaling group when dispatch server returns authenticating result; Dispatch server just sends the paging request of traditional group call to the base station controller in this group scheduling service area when judging that this group attribute is the traditional type group.
10, calling-control method as claimed in claim 7, it is characterized in that, in the described step (b), dispatch server is the traditional group call paging request of band caller information to the base station controller transmission that works the person of exhaling place, what exhale that base station controller sends to all in this group scheduling service area non-is the traditional group call paging request of not being with caller information, had in the paging request of described band caller information and exhaled terminal information, after working the paging request of exhaling base station controller to receive the band caller information, except the shared channel of setting up traditional type, also notified the reverse fundamental service channel of exhaling terminal can use timesharing to share.
11, calling-control method as claimed in claim 7, it is characterized in that, in the described step (c), the shared forward traffic channel that base station transceiver is set up comprises a shared Forward Fundamental Channel and a shared forward direction supplementary service channel, described step (e) is when conversation, base station side sends voice by this Forward Fundamental Channel to end side, and perhaps voice add signaling, and base station side sends signaling by this shared forward direction supplementary service channel to end side.
12, calling-control method as claimed in claim 7, it is characterized in that, in the described step (c), the shared reverse traffic channel that base station transceiver is set up comprises that at least two are shared reverse fundamental service channel, during described step (e) conversation, the terminal that obtains right of speech is monopolized reverse fundamental service channel transmission backward signaling and the voice that a timesharing is shared, and all do not have this group colony terminal of right of speech all to use the one or more reverse fundamental service channel of sharing simultaneously to send backward signaling.
13, calling-control method as claimed in claim 7, it is characterized in that, during described step (e) conversation, the terminal that obtains right of speech sends to base station sub-system by the shared reverse traffic channel of monopolizing with voice, base station sub-system is shared the cluster data link through special use and is sent to dispatch server, dispatch server is transmitted to all base station controllers of having set up the shared cluster data link of this call-specific, these base station controllers have been set up this base station transceiver of calling out shared channel resources distribution voice to all again, are sent to the colony terminal that has inserted by sharing Forward Fundamental Channel by these base station transceivers.
14, calling-control method as claimed in claim 7 is characterized in that, is further divided into following steps in the described step (f):
(f1) after end side, base station side or network side make a call and discharge, dispatch server is called out to all base station controllers transmissions of this calling and is released order, dispatch server judges when this user has the group calling of release authority that all base station controllers send to call out and release order in this is called out;
(f2) after base station controller receives that the calling of dispatch server is released order, notify its following all base station transceivers to send the notice of this end of calling, cancel shared forward traffic channel, and discharge the shared cluster data link of this call-specific to the dispatch server application for this call distribution;
(f3) special use of dispatch server response base station controller is shared the cluster data link and is discharged request, no longer transmits voice;
(f4) base station controller is after interface-free resources and special-purpose shared cluster data link release are finished, return Release complete to dispatch server, after dispatch server is received this this message of calling out all base station controllers transmissions, remove the network side resource, this calls out release the notice dispatching home location register, finishes.
15, calling-control method as claimed in claim 7 is characterized in that, after described step (e) dispatch server had received that the wireless channel of exhaling base station controller is set up success message, the notice dispatching home location register began to charge; Behind the Release complete of described step (f) dispatch server As-received station control, the notice dispatching home location register finishes to charge.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101094526B (en) * | 2007-07-24 | 2011-10-26 | 中兴通讯股份有限公司 | Method for implementing roaming through code division multiple access digital cluster tradition type group calls |
| CN101111010B (en) * | 2007-08-16 | 2010-06-09 | 中兴通讯股份有限公司 | Method for implementing voice transmission in integrated digital enhanced network |
| CN101159926B (en) * | 2007-10-16 | 2011-04-20 | 中兴通讯股份有限公司 | Method of establishing CDMA standard cluster group calling |
| CN101179777B (en) * | 2007-12-10 | 2010-06-16 | 中兴通讯股份有限公司 | Called party paging method |
| CN101466075B (en) * | 2007-12-17 | 2010-12-08 | 中兴通讯股份有限公司 | Matching method for group paging of CDMA cluster system |
| CN101262654B (en) * | 2008-04-14 | 2011-05-11 | 中兴通讯股份有限公司 | Call establishment method for digital cluster system |
| CN101686461A (en) * | 2008-09-23 | 2010-03-31 | 华为技术有限公司 | Method, system and network element of access control |
| CN101883428B (en) * | 2009-05-08 | 2012-05-23 | 大唐移动通信设备有限公司 | Paging method, device, system and mobile terminal |
| CN101594576B (en) * | 2009-06-23 | 2012-05-09 | 中兴通讯股份有限公司 | Method for realizing trans-provincial group calling in digital cluster communication system |
| CN102137337B (en) * | 2010-01-27 | 2013-09-25 | 普天信息技术研究院有限公司 | Method for quickly setting up group calling in digital trunking communication system |
| CN101835243B (en) * | 2010-05-25 | 2012-05-23 | 北京星网锐捷网络技术有限公司 | Wireless access point working channel selecting method and device |
| CN101877873A (en) * | 2010-06-23 | 2010-11-03 | 中兴通讯股份有限公司 | Method and device for authorizing communication right in digital trunked communication system |
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