CN100361546C - Method for implementing pushing-and speaking completing to occupy service - Google Patents
Method for implementing pushing-and speaking completing to occupy service Download PDFInfo
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- CN100361546C CN100361546C CNB2005100088564A CN200510008856A CN100361546C CN 100361546 C CN100361546 C CN 100361546C CN B2005100088564 A CNB2005100088564 A CN B2005100088564A CN 200510008856 A CN200510008856 A CN 200510008856A CN 100361546 C CN100361546 C CN 100361546C
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Abstract
The present invention discloses a method for realizing PTT preemption service, which comprises the steps: when an uplink of a group system is occupied by a speaker mobile station, a preemption mobile station initiates a PTT preemption service request to a network side; the network side allocates a special channel for the preemption mobile station, and thus, the preemption mobile station sends an uplink establishment request to the network side via the allocated special channel; the network side obtains the priority level of the preemption mobile station according to the received uplink establishment request and allocates the uplink of the group system according to the priority levels of the preemption mobile station and the speaker mobile station. The method of the present invention uses the special channel to initiate the preemption of the speaking right of the current speaker mobile station. The waste of system resources is avoided, the voice quality of the PTT preemption service is ensured, and at the same time, the miscellaneous speaking requirements of group users are satisfied, and thus, the flexibility of the present invention is high.
Description
Technical field
The present invention relates to the group service field in the trunking communication, refer to that especially a kind of realization press-and-talk (PTT, push to talk) seizes professional method.
Background technology
Along with people growing to communication requirement, the communication technology that is applicable to the social life every field all obtains in various degree development and perfect.Wherein, trunking communicating technology has also experienced from simulation-to-digital and has changed, from the evolution of independent private network construction to the construction of cluster common network.At present, the international standard GSM-R that a cover is used for the railway mobile communication has been made in Europe.The GSM-R standard is with the service bearer of GSM system as the railway trunking communication, and this standard can provide priority service (EMLPP), speech group-calling service (VGCS) and voice broadcast call business basic cluster communication services such as (VBS).On the basis of using for reference the GSM-R standard, current trunking communication development trend is the cluster common network communication system of building based on the GSM system.
In all multi-services of the cluster common network communication system of current construction, the VGCS business is one of most important business of cluster common network communication system.The VGCS business features is: a certain travelling carriage (MS) is if there is a speech demand, as long as wailing to send out by group exhales, and the speech content that other MS in the group system can this MS of uppick.Wherein, the MS that sends call information is called speaker MS, and the MS of receipt of call information is called hearer MS.The VGCS business is based on the shared realization of group system Traffic Channel.Wherein, according to group system Traffic Channel is distributed in the difference of sub-district, there are following two kinds of situations in the sharing mode of Traffic Channel:
First kind of situation, group system are given two Traffic Channels of cell allocation at speaker MS place, and one is used separately for speaker MS, and another is shared by all the hearer MS in this sub-district; For the sub-district of having only hearer MS, only be that Traffic Channel of this cell allocation is shared for all the hearer MS in the sub-district.
Second kind of situation, a Traffic Channel is all only distributed in each sub-district in the group system, is shared by all MS in the sub-district.
In the VGCS business, cluster user can be initiated the up link application by the employed MS of this user if the speech demand is arranged, and finally becomes speaker MS.In the prior art, generally adopt following PTT mode to realize the VGCS business: on the employed MS of cluster user the PTT key is set, cluster user is initiated the up link application by the PTT key.Below in the narration, the VGCS business that the PTT mode is realized is called the PTT business, and what Fig. 1 showed is the up link application process of PTT business.
Step 101: base station sub-system (BSS) is by the descending Fast Associated Control Channel (FACCH of group-calling channel, Fast Associated Control Channel) repeats to send message to the MS that participates in group call, inform that the up link of MS group system is in idle condition.In this application, described group-calling channel is the Traffic Channel of group system.
Step 102: the user sends uplink requests by the PTT key, and MS gives BSS by inserting at random to handle in the up uplink requests message of sending of group-calling channel.
Usually, group system can be provided with priority for its user according to the needs of business, such as: system can be provided with group leader in group priority is higher than domestic consumer.
When uplink idle, if group leader and domestic consumer send uplink requests by the PTT key simultaneously, then system is with priority treatment group leader's uplink requests.
After step 103:BSS receives uplink requests message, send uplink requests message for mobile switching centre (MSC), inform that MSC has the MS application to use the up link of group system.
Step 104:BSS by the descending transmission response message of group-calling channel to the MS that sends uplink requests in the step 102, after MS receives response message, to use the right of the up link of group system, promptly obtain the right of in group, talking, become speaker MS.Meanwhile, BSS stops the transmission of the described message of step 101.
Step 105:BSS sends busy message to the MS that participates in group call by the descending FACCH channel of group-calling channel, informs that the up link of MS group system is in busy state.
Step 106～107: speaker MS sends the SABM frame to BSS, comprises mobile station identification (IMSI/TMSI) and the classmark message of speaker MS in this frame.After BSS receives the SABM frame, reply acknowledge message for speaker MS.
Step 108～109:MSC sends uplink acknowledgment message to BSS.BSS sends message to MSC subsequently, and the confirmation up link can be used, and this message comprises the IMSI/TMSI information of speaker MS.
Step 110:MSC sends message for speaker MS, requires speaker MS to be arranged on the required parameter of speech in the group.Then, speaker MS utilizes the group calling channel uplink of its sub-district, place to talk in group.
Step 111: user's speech finishes, and presses the PTT key once more and discharges the speaking right that it takies.At this moment, speaker MS sends the up link release message to BSS.
Step 112:BSS sends indication to MSC, requires MSC to discharge the up link of the shared group system of speaker MS.
After step 113～114:MSC receives the message of BSS, discharge the employed group calling channel uplink of speaker MS.Then, MSC replys uplink idle message to BSS.Subsequently, BSS replys the up link release message for speaker MS.So far, the up link of group system comes back to idle condition.
Step 115:BSS repeats to send message to the MS that participates in group call by the descending FACCH channel of group-calling channel once more, informs that the up link of MS group system is in idle condition.
In the PTT business, only allow in the same time to have a speaker MS, hearer MS can only receive the voice messaging of speaker MS, and promptly hearer MS can only listen and can not say, and hearer MS also can't seize the speaking right of speaker MS.Described seizing is meant: the speech that takies group system at speaker MS does not discharge for the time being under the situation of this right, and hearer MS obtains the speaking right of group system by force.Afore mentioned rules is based on following reason:
Only be assigned to the situation of a group-calling channel for sub-district, speaker MS place, if the MS that initiate to seize this moment is in sub-district, speaker MS place, by step 102 as can be seen, this MS has only the group calling channel uplink by this sub-district to send uplink requests message to BSS, and the group calling channel uplink of this sub-district is used to send voice messaging by speaker MS at this moment.Like this, network side can't normal decoder uplink requests message, and this uplink requests message also can produce the voice that speaker MS transmits on up link and disturb simultaneously.
Situation for speaker MS place cell allocation to two group-calling channel, hearer MS can send uplink requests message at its assigned group-calling channel, the group-calling channel that hearer MS uses is different with the group-calling channel that speaker MS uses, and does not disturb so can not produce the voice of speaker MS.But because the system resource of group-calling channel takies greatly, the mode that adopts group calling channel uplink to initiate to seize can be brought the significant wastage of system resource.
So there is a speaker MS in the interior at one time only permission of the method that prior art adopts, be only to allow a group calling channel uplink to be used in the group system in the same time, can avoid resource waste like this, and guarantee the speech quality of PTT business.Yet there is a shortcoming in this method: in a single day certain MS becomes speaker MS, and before it discharged employed up link, all hearer MS can't apply for using up link.In actual applications, if accident causes hearer MS to press for the speaking right of seizing current speaker MS, the method for prior art can't satisfy this demand.In addition, group system all can be provided with priority for its user according to the needs of business, such as: system can be provided with group leader in group priority is higher than domestic consumer, but in the process of domestic consumer's speech, if group leader need chip in temporarily, the method for prior art can't provide this service to group leader according to priority.So prior art can not satisfy the many-sided speech demand of cluster user, very flexible.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method that realizes pushing-and speaking completing to occupy service, and the hearer MS in the realization group system seizes current speaker MS speaking right, makes the cluster talk business more versatile and flexible.
For achieving the above object, technical scheme of the present invention specifically is achieved in that
A kind of method that realizes pushing-and speaking completing to occupy service is characterized in that, when the up link of group system is taken by speaker's travelling carriage, carries out following steps:
A, seize travelling carriage and initiate the pushing-and speaking completing to occupy service request to network side, network side is for seizing travelling carriage assignment dedicated channel, seizes the dedicated channel of travelling carriage by assignment and sends up link foundation and ask network side;
B, network side set up the priority that acquisition request is seized travelling carriage according to the up link that receives, and according to the up link of the priority assignment group system of seizing travelling carriage and speaker's travelling carriage.
In this method, before step a seizes the request of Mobile Origination pushing-and speaking completing to occupy service, at first relatively seize the priority of travelling carriage and speaker's travelling carriage, be less than or equal to speaker's travelling carriage priority if seize the priority of travelling carriage, seize travelling carriage and will not initiate the pushing-and speaking completing to occupy service request.
In this method, the described network side of step b according to the method for priority assignment up link is: network side is relatively seized the priority of travelling carriage and speaker's travelling carriage, be higher than speaker's travelling carriage if seize the priority of travelling carriage, then seize travelling carriage and take up link; Be less than or equal to speaker's travelling carriage if seize the priority of travelling carriage, then up link is still taken by speaker's travelling carriage.
Further, describedly seize the method that travelling carriage takies up link and may further comprise the steps:
B11, network side send the up link release message to speaker's travelling carriage, require speaker's travelling carriage to discharge the up link of group system;
B12, network side send assignment message to the described travelling carriage of seizing of step a, the group system uplink assignment is given seize travelling carriage.
Describedly seize the process that travelling carriage takies up link and further comprise: network side is removed among the step a to seizing the dedicated channel of travelling carriage assignment.
Preferably, when the priority of seizing travelling carriage was less than or equal to speaker's travelling carriage, network side was removed among the step a to seizing the dedicated channel of travelling carriage assignment.
In this method, if among the step a two or more Mobile Origination pushing-and speaking completing to occupy service requests of seizing are arranged;
Then among the step b network side according to the up link of the priority assignment group system of the priority of the travelling carriage that sends the request of seizing at first and speaker's travelling carriage;
To sending the travelling carriage of the request of seizing after the travelling carriage that sends the request of seizing at first, network side is not the up link of its assignment group system.
This method further comprises before the step a: network side sends speaker's mobile station information in group system, this information is carried the pushing-and speaking completing to occupy service parameter, and network side is by being provided with the pushing-and speaking completing to occupy service parameter and forbidding or support pushing-and speaking completing to occupy service.
Preferably, described dedicated channel is a signaling channel.
Preferably, described signaling channel is RACH channel or SDCCH channel.
As seen from the above technical solutions, the method for this realization pushing-and speaking completing to occupy service of the present invention utilizes dedicated channel to initiate to seize, and has realized seizing current speaker MS speaking right.Because the resource that takies of dedicated channel is few, the bandwidth that takies of dedicated channel only is 1/8th of group-calling channel generally speaking, can optimized using system resource to seizing of current speaker MS speaking right so adopt dedicated channel to initiate.In addition, this method initiates to seize the preemption processes of MS by priority control is set, such as: the MS that the current speaker of priority ratio is low can't seize the speaking right of speaker MS, thereby guaranteed that PTT seizes professional order, and the system that embodied to a greater degree is provided with the meaning of priority to cluster user.At last, this method is simple in the realization of signaling process, unified, and two kinds of group-calling channel methods of salary distribution all are suitable for, and has very strong versatility.
Description of drawings
Fig. 1 uses the flow chart of the up link that is in Idle state for MS application in the prior art;
Fig. 2 seizes business process map for the PTT that seizes MS in the first embodiment of the invention and seize success;
Fig. 3 seizes business process map for the PTT that seizes MS in the second embodiment of the invention and seize failure.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
The invention provides a kind of PTT of realization and seize professional method, this method allows the MS in the group system that busy group system up link is seized, and makes the speaking right in the MS acquisition group system.
Need to prove that the PTT whether method of the present invention opens group system by MSC control seizes business.During the up link of group system is in busy attitude, MSC can periodically send the information TALKER_INFORMATION (MSISDN of speaker MS in all sub-districts of group system, PRIORITY, UPLINKACCESSFLAG), the information of this speaker MS sends by the descending FACCH channel of group-calling channel.Parameter UPLINKACCESSFLAG in the speaker MS information is used for identifying PTT and seizes professional state, such as: UPLINKACCESSFLAG is set at 0 o'clock, the expression group system forbids that MS seizes the group system up link that current speaker MS takies by any way, this means that PTT seizes professional conductively-closed; UPLINKACCESSFLAG is set at 1 o'clock, and expression PTT seizes professional the unlatching, and MSC allows MS by dedicated channel the group system up link that current speaker MS takies to be seized, and obtains speaking right; UPLINKACCESSFLAG is set at 2 o'clock, and expression MSC allows MS by group-calling channel the group system up link that current speaker MS takies to be seized; Except above-mentioned three kinds of situations, other value of UPLINKACCESSFLAG can be reserved, and is used for professional in the future the expansion.
In the narration below, be called and seize MS sending MS that PTT seizes service request, the current MS that talks in group system is called speaker MS.
Fig. 2 has shown that the PTT in the first embodiment of the invention seizes operation flow, in this flow process, seizes MS and successfully robs the speaking right that accounts for speaker MS, becomes speaker MS new in the group system.
Step 201:MSC periodically sends speaker MS information TALKER_INFORMATION (MSISDN in all sub-districts of group system, PRIORITY, UPLINKACCESSFLAG), wherein parameter UPLINKACCESSFLAG is set to 1, this moment, PTT seized professional the unlatching, and the MS in the group system can initiate seizing of group system up link that current speaker MS is taken by dedicated channel.
After step 202:BSS received the TALKER_INFORMATION message of MSC transmission, all MS sent TALKER_INFORMATION (PREEMPTFLG, PRIORITY, MSISDN) message in group system.Parameter PREEMPTFLG in this message is set to 1, is used to inform that the PTT of MS group system seizes professional the unlatching, and network side allows MS to initiate seizing of group system up link that current speaker MS is taken.
If the UPLINKACCESSFLAG parameter is set to 0 in the TALKER_INFORMATION message that MSC sends, show that PTT seizes professional conductively-closed, then in the BSS TALKER_INFORMATION message that all MS send in group system also parameter PREEMPTFLG be set to 0, be used to forbid that MS initiates seizing of group system up link that current speaker MS is taken.Because flow process shown in Figure 2 is to seize successfully flow process,, will in this flow process, not describe shielding PTT so seizing professional situation.
Step 203: cluster user is pressed the MS that uses in the needs speech PTT key sends request.At this moment, because speaker MS has taken the group system up link,,, the request that MS sends in this step seizes request so being PTT so the group system up link is in busy state.At this moment, what the MS requirement was seized is the speaking right of speaker MS, and promptly MS requires to take the up link of group system.
In the prior art, cluster user is pressed the MS that uses in the needs speech PTT key sends request.If MS knows that by the TALKER_INFORMATION message that detects BSS and send the group system up link is in busy state, MS will be not send among Fig. 1 the described uplink requests of step 102 or stops sending uplink requests to BSS to BSS.So the method for prior art can't realize seizing speaker MS speaking right.
In the present embodiment, be under the busy state in the group system up link, MS can seize request application acquisition speaking right by sending PTT.Send before PTT seizes request to BSS at MS, MS is the priority (PRIORITY) of self and the PRIORITY of speaker MS relatively, if the priority of self (PRIORITY) is higher than the PRIORITY of speaker MS, then MS sends PTT to BSS and seizes request.If the priority of self (PRIORITY) is less than or equal to the PRJORITY of speaker MS, MS will not send PTT to BSS and seize request.Wherein, the PRIORITY parameter in the TALKER_INFORMATION message sent by BSS of the PRIORITY of speaker MS is carried.
Because the flow process shown in the present embodiment is to seize successfully flow process, so locate to suppose that the PRIORITY that seizes MS is higher than the PRIORITY of speaker MS, can sends PTT to BSS and seize request so seize MS.
Step 204:BSS receives that the PTT that seizes MS seizes request, sends immediate assignment message to seizing MS, gives and seizes MS assignment dedicated channel.
In subsequent step, seize MS and can initiate seizing by the dedicated channel of institute's assignment to current speaker MS speaking right.
Dedicated channel described in this step can be Separate Dedicated Control Channel (SDCCH, Stand-alone Dedicated Control Channel) signaling channel such as, because the bandwidth resources that signaling channel takies are 1/8th of Traffic Channels, can optimized using system resource so adopt signaling channel to initiate to seizing of current speaker MS speaking right.
Step 205: seize MS and send the link setup request message to BSS, comprise in this message: seize the cell information at MS place, the International Mobile Subscriber Identity of this MS (IMSI) and PRIORITY information by dedicated channel.
After step 206～207:BSS receives the link setup request message of seizing MS, send the link setup request message, and give and seize MS answer link setup acknowledge message to MSC.
After step 208～209:MSC receives the link setup request message of BSS transmission, judge whether seize MS can seize the speaking right of current speaker MS.Because the PRIORITY that has supposed to seize MS in the step 203 is higher than the PRIORITY of speaker MS, MSC judges that seizing MS can seize the speaking right of current speaker MS, so MSC replys the link setup acknowledge message to BSS.
Described preferable the seizing in the flow process of present embodiment, seizing MS and speaker MS needs relatively PRIORITY twice.For the first time being to finish PRIORITY relatively by seizing MS in step 203, is the priority of relatively being seized MS and speaker MS in step 209 by MSC for the second time.Twice priority ratio is set is based on following consideration: the legal MS that uses in the group system is when initiating to seize, self need and speaker MS comparison priority, but, system all belongs to legal MS because can't guaranteeing the MS that uses in the sub-district, so need relatively seize the priority of MS and speaker MS by MSC once more, improve the stability of system.
In other embodiments of the invention, the above-mentioned flow process of seizing can only be provided with a priority ratio: perhaps finish PRIORITY relatively by seizing MS in step 203; Perhaps in step 209, relatively seize the priority of MS and speaker MS by MSC.
Step 210:MSC sends the up link release message to BSS, requires speaker MS to discharge employed group calling channel uplink.
After step 211:BSS receives the up link release message of MSC, send the up link release message, notify speaker MS to discharge employed group calling channel uplink at the descending FACCH channel of the group-calling channel of sub-district, speaker MS place.
Step 212:BSS replys the up link Release complete to MSC, informs that the release of MSC up link finishes.
After step 213:MSC discharges the group calling channel uplink that speaker MS takies, send assignment message to BSS, the uplink assignment of group system is given seize MS by seizing the dedicated channel that MS takies.This assignment message carries seizes the MS cell, shows the success of seizing of seizing MS, and this MS can become the new speaker MS of group system.
After step 214:BSS received the assignment message of MSC, the group calling channel uplink assignment that will seize sub-district, MS place by Assignment Command was to seizing MS.
Need to prove that behind the group calling channel uplink that MSC release speaker MS takies in the step 213, the up link of group system is in idle condition.Subsequently, BSS is seized MS assignment group calling channel uplink in the step 214, and at this moment, the up link of group system is occupied again, is in busy state.BSS may be a same link to the group calling channel uplink of seizing the MS assignment in group calling channel uplink that MSC discharges in the step 213 and the step 214, also may non-same link.
If seize MS and speaker MS is in same sub-district, and system only gives group-calling channel of this cell allocation, and so, to give the group calling channel uplink of seizing MS be exactly the group calling channel uplink that speaker MS discharges in the BSS assignment in the step 214.
If seize MS and speaker MS is in same sub-district, and system gives two group-calling channels of this cell allocation, the special-purpose group-calling channel of speaker MS, the shared group-calling channel of other MS in the sub-district, so, the BSS assignment gives the group calling channel uplink of seizing MS just different with the group calling channel uplink that speaker MS discharges in the step 214.
For seizing the situation that MS and speaker MS are in different districts, because system gives the different group-calling channel of each cell allocation, so the BSS assignment gives the group calling channel uplink of seizing MS inevitable different with the group calling channel uplink that speaker MS discharges in the step 214.
Step 215: after seizing the assignment message that MS receives BSS, confirm self to become new speaker MS, reply assignment to BSS simultaneously and finish message.
Step 216～217:BSS replys assignment to MSC and finishes message, and BSS sends dedicated channel to MSC again and removes request message (CLR_REQ) subsequently, requires release to seize the dedicated channel that MS uses.
Step 218～219:MSC sends speaker MS information in all sub-districts of group system, after BSS receives the TALKER_INFORMATION message of MSC transmission, all MS in group system send TALKER_INFORMATION (PREEMPTFLG by the descending FACCH channel cycle of the group-calling channel of each sub-district ground, PRIORITY, MSISDN) message.Each MS can refresh speaker's information by the TALKER_INFORMATION message that receives.
After step 220:MSC sends speaker MS information, send dedicated channel to BSS and remove message.
After step 221:BSS receives the removing message of MSC, carry out command adapted thereto, reply to remove to MSC subsequently and finish message.
So far, PTT seizes flow process and finishes, and seizes MS and successfully obtains the group system up link, becomes speaker MS new in the group system.Simultaneously, MSC periodically sends to all MS in the group system with the information of new speaker MS.
Fig. 3 has shown that the PTT in the second embodiment of the invention seizes operation flow, in this flow process, because various abnormal operations cause MS to initiate unsuitable seizing.Herein, unsuitable seizing is meant in step 203, when MS is less than or equal to the PRIORITY of speaker MS at the PRIORITY of self, still sends PTT to BSS and seizes request.
Step 301:MSC periodically sends the information TALKER_INFORMATION (MSISDN of speaker MS in all sub-districts of group system, PRIORITY, UPLINKACCESSFLAG), wherein parameter UPLINKACCESSFLAG is set to 1, shows that PTT seizes professional the unlatching.
After step 302:BSS received the TALKER_INFORMATION message of MSC transmission, all MS sent TALKER_INFORMATION (PREEMPTFLG, PRIORITY, MSISDN) message in group system.Parameter PREEMPTFLG in this message is set to 1, is used to inform that the PTT of MS group system seizes professional the unlatching.
Step 303:MS sends PTT to BSS and seizes request, and this moment, the PRIORITY of MS was less than or equal to the PRIORITY of speaker MS, is unsuitable seizing so MS carries out.
Step 304:BSS receives that the PTT that seizes MS seizes request, sends immediate assignment message to seizing MS, is seized MS assignment dedicated channel, seizes MS and can initiate seizing current speaker MS speaking right by dedicated channel.
Step 305: seize MS and send the link setup Indication message to BSS, comprise in this message: seize the cell information at MS place, the mobile station identification of this MS (IMSI) and PRIORITY information by dedicated channel.
After step 306～307:BSS receives the link setup Indication message of seizing MS, send the link setup Indication message, and give and seize MS answer link setup acknowledge message to MSC.
After step 308～309:MSC receives the link setup request message of BSS transmission, judge whether seize MS can seize the speaking right of current speaker MS.Because the PRIORITY that has supposed to seize MS in the step 303 is less than or equal to the PRIORITY of speaker MS, MSC judges that seizing MS can not seize the speaking right of current speaker MS, so MSC replys message to BSS, not with the cell of new speaker MS, show and seize failure in the message.
Step 310～312:BSS receives the answer message of MSC, sends the dedicated channel release message to MS, and BSS finishes message to MSC answer assignment simultaneously, and BSS sends dedicated channel to MSC again and removes request message subsequently, requires to discharge the dedicated channel of seizing the MS use.
The dedicated channel release message that BSS sends to MS comprises that the group-calling channel of seizing sub-district, MS place describes cell.After seizing MS and receiving the dedicated channel release message, the dedicated channel of release busy, and get back to the group calling receiving mode, and detect the group-calling channel of describing in the channel release message as the hearer, continue to monitor the message that speaker MS sends by up link in the group-calling channel.
So far, PTT seizes flow process and finishes, and the MS that initiates to seize unusually can't obtain the up link of group system, and current speaker MS still has speaking right.For reducing the appearance of abnormal conditions, after PTT shown in Figure 3 seizes the flow process end, MSC sends speaker MS information in all sub-districts of group system, after BSS receives the TALKER_INFORMATION message of MSC transmission, all MS in group system send TALKER_INFORMATION (PREEMPTFLG by the descending FACCH channel cycle of the group-calling channel of each sub-district ground, PRIORITY, MSISDN) message.Each MS can obtain the PRIORITY information of speaker's information and speaker MS by the TALKER_INFORMATION message that receives.
In the above-mentioned steps 303, after MS initiates unsuitable seizing, the assignment refuse information immediately that does not have dedicated channel to send if this MS receives network side for distributing, perhaps seize MS and can't successfully initiate seizing current speaker MS speaking right by dedicated channel, perhaps dedicated channel access failure, then seize PTT that MS initiates and seize flow process and finish, this MS seizes failure.At this moment, MS should get back to idle pulley, monitors notification channel (NCH, Notification Channel) information.
Because Fig. 2 and Fig. 3 describe seize successfully flow process and seize failure procedures all needs certain signaling time just can finish, and during this period abnormal conditions may take place, such as: MS can't connect with network side on dedicated channel; After perhaps MS is connected with network side foundation is special-purpose, can not receive Assignment Command or dedicated channel release message that BSS sends; Perhaps MS can't connect by group calling channel uplink and network side.For above-mentioned abnormal conditions, MS is returning to idle mode at first, monitors the NCH channel massage, if the NCH channel massage that receives shows that group calling still exists, then this MS receives the group calling notice and continues to add group calling; If group calling discharges, then MS can't receive relevant group calling notice, so keep idle condition.
Third embodiment of the invention is all to send the PTT that PTT seizes request in the section at one time about a plurality of MS to seize operation flow.The described same time period refers to and periodically sends PTT that speaker MS information handles all MS to network side from network side and seize and periodically send once more after the request the speaker MS information during this period of time.In this flow process, be not that all MS can both successfully rob the speaking right that accounts for speaker MS, become speaker MS new in the group system, seize competition so between a plurality of MS of seizing, exist.Be the competition process of seizing that example illustrates the 3rd embodiment with the simplest situation below, suppose to have two MS to send PTT and seize request in the section at one time, because MS can not send PTT simultaneously and seize request on stricti jurise, so basis is sent two MS of time order and function differentiation that PTT seizes request in the present embodiment, sending MS that PTT seizes request earlier is called A and seizes MS, after send MS that PTT seizes request and be called B and seize MS, and suppose that A seizes the PRIORITY that MS and B seize MS and is higher than current speaker MS, it is as follows that PTT seizes operation flow:
At first, MSC periodically sends speaker's information in all sub-districts of group system, and wherein parameter UPLINKACCESSFLAG is set to 1, shows that PTT seizes professional the unlatching.After BSS received the TALKER_INFORMATION message of MSC transmission, all MS sent TALKER_INFORMATION message in group system, were used to inform that the PTT of MS group system seizes professional the unlatching, and with current all MS of speaker MS information notification.
Subsequently, A seizes MS and B and seizes MS and send the request of seizing.After BSS receives that A seizes PTT that MS and B seize MS and seizes request, give two to seize MS and send immediate assignment message, for A, B seize MS assignment dedicated channel.Seize dedicated channel initiation the seizing that MS can pass through to be distributed for two to current speaker MS speaking right.
Wherein, BSS can seize MS to A with Random Access Channel (RACH, Random Access Channel) assignment and use, and the SDCCH channel assignment is seized MS to B use.RACH channel and SDCCH channel all are the group system dedicated channels.
Then, seize the dedicated channel of MS by separately and send the link setup request message for two to BSS.After BSS receives the link setup request message of seizing MS, send the link setup request message, and give and seize MS answer link setup acknowledge message to MSC.
Because A seizes MS and sends the request of seizing earlier, so MSC receives the A of BSS transmission earlier and seizes the link setup request message of MS, A seizes MS and carries out step 208～221 shown in Figure 2 then, and final A seizes the speaking right that MS successfully seizes current speaker MS, becomes speaker MS new in the group system.
After MSC receives that the A of BSS transmission seizes the link setup request message of MS, receive that again the B of BSS transmission seizes the link setup request message of MS.At this moment, MSC judges the current uplink takeover process that is in, think that the link setup request message that B that BSS sends seizes MS replys assignment message, not with the cell of new speaker MS, show that B seizes the failure of seizing of MS in the message.Then, B seizes MS execution in step 310～312, finishes this PTT and seizes operation flow.
In the said process, if seizing the PRIORITY of MS, A is less than or equal to current speaker MS, the PRIORITY that B seizes MS is higher than current speaker MS, and A seizes MS because abnormal conditions are initiated unsuitable seizing, it is as follows that PTT seizes professional execution result: A seizes MS execution in step 301～312 processes, seizes failure at last; Be higher than current speaker MS though B seizes the PRIORITY of MS, A seizes MS and seizes MS prior to B and send the request of seizing, so B seizes the also failure of seizing of MS.
Equally, be higher than current speaker MS if A seizes the PRIORITY of MS, the PRIORITY that B seizes MS is less than or equal to current speaker MS, and then A seizes the success of seizing of MS, and B seizes the failure of seizing of MS.
All be less than or equal to current speaker MS if A seizes the PRIORITY that MS and B seize MS, then A seizes MS and B and seizes seizing of MS and fail.
More than several situations can be generalized to two above MS and initiate the process seized, repeat no more herein.
By the above embodiments as seen, the method of this realization pushing-and speaking completing to occupy service of the present invention utilizes dedicated channel to initiate seizing current speaker MS speaking right, when avoiding resource waste and guaranteeing that PTT seizes professional speech quality, satisfied the many-sided speech demand of cluster user, so flexibility is strong.
Claims (10)
1, a kind of method that realizes pushing-and speaking completing to occupy service is characterized in that, when the up link of group system is taken by speaker's travelling carriage, carries out following steps:
A, seize travelling carriage and initiate the pushing-and speaking completing to occupy service request to network side, network side is for seizing travelling carriage assignment dedicated channel, seizes the dedicated channel of travelling carriage by assignment and sends up link foundation and ask network side;
B, network side set up the priority that acquisition request is seized travelling carriage according to the up link that receives, and according to the up link of the priority assignment group system of seizing travelling carriage and speaker's travelling carriage.
2, method according to claim 1, it is characterized in that, seize among the step a before the request of Mobile Origination pushing-and speaking completing to occupy service, at first relatively seize the priority of travelling carriage and speaker's travelling carriage, be less than or equal to speaker's travelling carriage priority if seize the priority of travelling carriage, seize travelling carriage and will not initiate the pushing-and speaking completing to occupy service request.
3, method according to claim 1 and 2, it is characterized in that, the described network side of step b according to the method for priority assignment up link is: network side is relatively seized the priority of travelling carriage and speaker's travelling carriage, be higher than speaker's travelling carriage if seize the priority of travelling carriage, then seize travelling carriage and take up link; Be less than or equal to speaker's travelling carriage if seize the priority of travelling carriage, then up link is still taken by speaker's travelling carriage.
4, method according to claim 3 is characterized in that, describedly seizes the method that travelling carriage takies up link and may further comprise the steps:
B11, network side send the up link release message to speaker's travelling carriage, require speaker's travelling carriage to discharge the up link of group system;
B12, network side send assignment message to the described travelling carriage of seizing of step a, the group system uplink assignment is given seize travelling carriage.
5, method according to claim 4 is characterized in that, describedly seizes the process that travelling carriage takies up link and further comprises: network side is removed among the step a to seizing the dedicated channel of travelling carriage assignment.
6, method according to claim 3 is characterized in that, when the priority of seizing travelling carriage was less than or equal to speaker's travelling carriage, network side was removed among the step a to seizing the dedicated channel of travelling carriage assignment.
7, method according to claim 1 and 2 is characterized in that, if among the step a two or more Mobile Origination pushing-and speaking completing to occupy service requests of seizing are arranged;
Then among the step b network side according to the up link of the priority assignment group system of the priority of the travelling carriage that sends the request of seizing at first and speaker's travelling carriage;
To sending the travelling carriage of the request of seizing after the travelling carriage that sends the request of seizing at first, network side is not the up link of its assignment group system.
8, method according to claim 1 and 2, it is characterized in that, this method further comprises before the step a: network side sends speaker's mobile station information in group system, this information is carried the pushing-and speaking completing to occupy service parameter, and network side is by being provided with the pushing-and speaking completing to occupy service parameter and forbidding or support pushing-and speaking completing to occupy service.
9, method according to claim 1 and 2 is characterized in that, described dedicated channel is a signaling channel.
10, method according to claim 9 is characterized in that, described signaling channel is RACH channel or SDCCH channel.
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| EP2160050B1 (en) * | 2008-09-02 | 2012-11-21 | Rohill Technologies B.V | Fast inter system push to talk operation |
| CN103096261A (en) * | 2011-11-08 | 2013-05-08 | 中兴通讯股份有限公司 | Method and system based on priority level managing cluster speaking right |
| CN103118339B (en) * | 2011-11-17 | 2016-03-16 | 鼎桥通信技术有限公司 | Speaking right application method, network equipment and terminal equipment |
| CN103856906A (en) * | 2012-11-30 | 2014-06-11 | 中兴通讯股份有限公司 | Cluster discourse right preempting method, device and system |
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| CN103476008A (en) * | 2013-09-05 | 2013-12-25 | 哈尔滨海能达科技有限公司 | Traffic channel right to use seizing method and system, trunking terminal and device |
| JP6401069B2 (en) * | 2015-01-30 | 2018-10-03 | アイホン株式会社 | Intercom system for housing complex |
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