CN1592429A - Method for controlling reverse service channel in digital honeycomb cluster system - Google Patents
Method for controlling reverse service channel in digital honeycomb cluster system Download PDFInfo
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- CN1592429A CN1592429A CN 03155268 CN03155268A CN1592429A CN 1592429 A CN1592429 A CN 1592429A CN 03155268 CN03155268 CN 03155268 CN 03155268 A CN03155268 A CN 03155268A CN 1592429 A CN1592429 A CN 1592429A
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Abstract
This invention disclosed an inverse business channel control method in digital cellular cluster system. Its method includes. A. The user terminal in the cluster group transmit inverse communicate by telephone request to base station system. B. The base station system treat the first inverse communicate request be transmitted by user terminal, and transmit this request to cluster service center. C. The cluster service treats center received the first inverse communicate request signal, makes the user terminal of transmitting this request to occupy and use inverse business channel to communicate. This method reduces the load of BSS and TSC or dispatch platform.
Description
Technical field
The present invention relates to the group service field of Digital Cellular System, the control method of reverse traffic channel in particularly a kind of digital cellular group system.
Background technology
It is a technological development direction of public mobile communication system that professional scheduling feature is provided on Digital Cellular System, support that the Digital Cellular System of group service is a kind of dispatching communication system of special use, this system can make the multi-user share the wireless channel of negligible amounts automatically, and dynamically uses the Digital Cellular System of these channels.The digital cellular group system is compiled the up duration of all channels effectively by the dynamic assignment of frequency, thereby for each user terminal provides maximum available labour time, and the obstruction of channel reduced to minimum.
In order to make Digital Cellular System support group service, adopt forward traffic channel to share, reverse traffic channel is multiplexing at times by seizing realization by the user terminal in the cluster group, thereby realizes intercommunication function.User terminal in the cluster group carries out the process that reverse traffic channel seizes:
A plurality of push-to-talk (PTT) user terminal button in step 1, the cluster group sends and oppositely seizes request message, and this message sends to cluster service center (TSC) or dispatching desk by base station sub-system (BSS);
Step 2, control by TSC or dispatching desk unification and to determine which user terminal can use reverse traffic channel to converse;
Step 3, TSC or dispatching desk send the affirmation message that inserts reverse traffic channel message to this user terminal, periodically forbid inserting message to the broadcasting of forward direction Traffic Channel simultaneously, send repeatedly in order to other PTT user terminal in the prevention cluster group and seize message by BSS.
Owing to do not limit in the quantity of schooling group internal user, therefore having a large number of users carries out reverse traffic channel simultaneously and seizes, therefore have a large amount of reverse call request message all to send to TSC or dispatching desk by BSS, this impact for BSS and TSC or dispatching desk is bigger.
And because the automatic retransmitting function of group service support, the reverse call request message that is the user terminal transmission is not for a certain reason by under the situation of the network side of digital cellular group system affirmation, user terminal will continue to send channel request for several times automatically after user terminal discharged the PTT button, or user terminal continues to press 4 seconds of PTT button with interior continuous transmission 16 secondary channel request messages, till the network side of digital cellular group system acknowledges receipt of this application, this requires BSS must be responded when seizing of reception user terminal asked, and this has increased the load of BSS.
Summary of the invention
In view of this, main purpose of the present invention is to provide the control method of reverse traffic channel in a kind of digital cellular group system, this method can reduce the load of BSS and TSC or dispatching desk, in the time of the PTT user terminal being inserted the Digital Cellular System Effect on Performance is dropped to minimum.
According to above-mentioned purpose, technical scheme of the present invention is achieved in that
The control method of reverse traffic channel in a kind of digital cellular group system, this method comprises:
User terminal in A, the cluster group sends reverse call request to affiliated base station system;
First reverse call request that B, base station system treat user terminal send, and to this reverse call request of cluster service center transmission;
C, cluster service center are handled first the reverse call request message that receives, and make the user terminal that sends this reverse call request message take reverse traffic channel and communicate.
Described step B further comprises:
The follow-up reverse call request message of base station system is abandoned.
Described step B further comprises:
The message that base station system takies to all user terminal broadcasting reverse traffic channels that belong to this base station system.
The described message that takies to user terminal broadcasting reverse traffic channel is periodic.
Described step C further comprises: cluster service center takies message to all base station system broadcasting reverse traffic channels of being administered after the base station system that sends first reverse call request message is returned acknowledge message;
Cluster service center supervention backward send the base station system of reverse call request to return reverse conversation refuse information;
The base station system that sends first reverse call request message is transmitted to this acknowledge message the user terminal that sends first reverse call request message.
It is described that to take message to base station system broadcasting reverse traffic channel be periodic.
It is channel occupancy that the described reverse conversation refuse information of step C is carried cause value.
This method further comprises:
If base station system receives when returning acknowledge message, upgrade base station system cluster group information;
If during the reverse conversation refuse information that base station system receives that cluster service center returns, judge whether the cause value of this message is channel occupancy, if this message is not processed method ends; Otherwise, this base station system cluster group channel occupancy sign is changed to the free time.
In judging in time threshold, base station system whether both do not received the affirmation message of cluster service center after cluster service center sends reverse call request message, do not receive the reverse conversation refuse information of cluster centers, if then base station system cluster group channel occupancy sign is changed to the free time yet; Otherwise do not process.
Before first reverse call request that the described base station system treat user terminal of step B sends, this method further comprises:
Base station system judges that whether this base station system cluster group channel occupancy sign is idle, if be idle, and execution in step B then, renewal base station system cluster group information, and this busy flag is changed to takies; If for taking, then finish.
Before the described cluster service center of step C was handled first the reverse call request message that receives, this method further comprised:
Cluster service center judges whether cluster service center cluster group channel occupancy sign is idle, if idle, then execution in step C upgrades cluster service center cluster group letter bag, and puts this busy flag for taking; Otherwise, respond oppositely conversation refuse information to base station system.
Described cluster service center is the upper level control centre of base station system in the digital cellular group system.
This method further comprises:
D, the user terminal that takies reverse traffic channel finish reverse link communication, send oppositely to affiliated base station system that conversation discharges request message, and this message is transmitted to cluster service center by this base station system;
E, cluster service center are upgraded cluster group channel information, to the message of the base station system broadcasting reverse traffic channel free time of being administered;
F, base station system are broadcasted the message of reverse traffic channel free time to the user terminal that belongs to this base station system.
Before the base station system message of broadcasting reverse traffic channel free time, this method further comprises in the described cluster service center of step e:
Cluster service center is changed to the free time with this cluster service center cluster group channel occupancy sign.
Before the message of the user terminal broadcasting reverse traffic channel free time that belongs to this base station system, this method further comprises in the described base station system of step F:
Base station system is changed to the free time with this base station system cluster group channel occupancy sign.
The described message to the base station system broadcasting reverse traffic channel free time of step e is periodic.
The described message to the user terminal broadcasting reverse traffic channel free time of step F is periodic.
When method provided by the invention was seized reverse traffic channel in the schooling group internal user terminal, user terminal was regardless of priority in the group, but adopted first come first served basis, on BSS and TSC grading control was carried out in the request of seizing.BSS and TSC only admit all that first user terminal in this preemption processes sends seizes the reverse traffic channel request message, BSS takies message for the schooling group internal user terminal broadcasting reverse traffic channel in this BSS scope by forward channel after admitting this message immediately, TSC takies message at forward channel all BSS broadcasting reverse traffic channels in the TSC scope after admitting first reverse traffic channel request message immediately, and the schooling group internal user terminal is received after this takies message and stopped to send reverse call request.Discharge the PTT button when first user terminal finishes conversation, TSC broadcasts the reverse traffic channel idle message after receiving this message by BSS in this cluster group, and the user terminal in this cluster group carries out seizing of reverse traffic channel again.Method provided by the invention has reduced the load of BSS and TSC, when the PTT user terminal is inserted the Digital Cellular System Effect on Performance has been dropped to minimum.
Description of drawings
Fig. 1 carries out the flow chart that reverse traffic channel is seized for user terminal of the present invention.
Fig. 2 carries out the flow chart that reverse traffic channel discharges for user terminal of the present invention.
Embodiment
In order to make the purpose, technical solutions and advantages of the present invention clearer, by the following examples and with reference to accompanying drawing, the present invention is described in more detail.
In the process of at every turn seizing reverse traffic channel, BSS only admits first reverse call request message, directly abandons for the reverse call request message of subsequent user terminal in this BSS, up to the reverse traffic channel idle message of receiving that TSC sends.After handling first reverse call request message, this BSS takies message at the user terminal broadcasting reverse traffic channel of forward path in this BSS immediately, but this message is periodic broadcasting also, as setting cycle is 500ms, then, BSS sends the reverse call request message of user terminal to TSC, TSC only admits first reverse call request message, the follow-up reverse call request message that receives is directly returned reverse conversation refuse information, TSC confirms to take message at forward channel all BSS broadcasting reverse traffic channels in this cluster group immediately after the reverse call request message of first user terminal, but this message is periodic broadcasting also, as setting cycle is 10 minutes, and timing cycle can be different with the cycle of BSS broadcasting, are 10 minutes as setting cycle.
BSS periodic broadcasting reverse traffic channel takies message and gives user terminal, is to unify the current state of this cluster group reverse traffic channel for all user terminals in the user terminal that makes new adding cluster group and the cluster group; TSC periodic broadcasting reverse traffic channel takies message and gives BSS, is in order to make the BSS that belongs to this TSC unify the current state of cluster group reverse traffic information.
After the user terminal that takies reverse traffic channel discharged the PTT key, to all BSS broadcasting reverse traffic channel idle message, this message can periodic broadcasting, is 10 minutes as setting cycle in forward channel for TSC.After receiving this message, BSS broadcasts this reverse traffic idle message to the user terminal of this cluster group, and this message can periodic broadcasting, is 500ms as setting cycle, and this user terminal can be seized reverse traffic channel once more.
BSS periodic broadcasting reverse traffic channel idle message is given user terminal, is to unify the current state of this cluster group reverse traffic channel for all user terminals in the user terminal that makes new adding cluster group and the cluster group; TSC periodic broadcasting reverse traffic channel idle message is given BSS, is in order to make the BSS that belongs to this TSC unify the current state of cluster group reverse traffic information.
TSC among the present invention is the upper level control centre of base station system in the digital cellular group system, is not limited to concrete physical entity, as: can be integrated in the mobile switching centre (MSC).
Below illustrate the present invention with the user terminal for the PTT user terminal.
As shown in Figure 1, Fig. 1 carries out the flow chart that reverse traffic channel is seized for user terminal of the present invention, supposes that a part of user terminal in this cluster group belongs to BSS1, and another part user terminal belongs to BSS2, and its detailed process is:
Step 100,101,102, when reverse traffic channel is idle, TSC is in the message of forward channel periodic broadcasting reverse traffic channel free time (Uplink State Ind (free)), and this message sends to all user terminals in this cluster group by BSS1 and BSS2;
After user terminal in step 103,104,105, this cluster group is received this Uplink State Ind (free), send push-to-talk request (PTT setup request) message and carry out seizing of reverse traffic channel;
Step 106,107,108, BSS1 judge whether BSS1 group channel occupancy sign is true after receiving this PTT setuprequest message that the user terminal that belongs to BSS1 sends, if, then BSS1 cluster group channel is occupied, does not handle PTT setup request message; If not, then BSS1 cluster group channel is unoccupied, reverse call request (the PTT uplink request) message that the process user terminal sends.Promptly send first PTT uplink request message of the user terminal of affiliated BSS1 to TSC, the follow-up PTT setup request message that other user terminal of BSS1 under in the cluster group is sent abandons, and BSS1 takies (Uplink State Ind (busy)) by forward channel periodic broadcasting reverse traffic channel;
By that analogy, BSS2 does identical processing to this PTT setup request message that the user terminal of affiliated BSS2 sends;
Step 109,110, after TSC receives PTT uplink request message, whether the busy flag of judging TSC cluster group channel is true, suppose that first PTT uplink request message is sent by BSS1, TSC cluster group channel was unoccupied when TSC handled this message, handle PTT uplink request message, upgrade TSC cluster group information, soon the reverse traffic channel free time in the TSC cluster group information is converted to and takies, and the user terminal information that will send first PTT uplink request message is noted down, return reverse call request response (PTT uplink ack) message to BSS1, the busy flag of TSC cluster group channel is changed to very, simultaneously, TSC is to BSS1 and BSS2 broadcasting Uplink StateInd (busy) message; If follow-up have other BSS to send PTT uplink request message to TSC, TSC directly responds oppositely conversation refusal (PTT uplink reject) message to BSS, and carrying cause value is TSC cluster group channel occupancy;
Step 113, when BSS1 receive that TSC sends for PTT uplink ack message the time, upgrade BSS1 cluster group information, promptly record sends the parameters such as user terminal information of first PTT uplink request message, returns reverse conversation to first user terminal that sends PTT setup request message of affiliated BSS1 and confirms (PTT setup confirm) message; BSS2 receive that TSC sends for PTT uplinkreject message the time, check cause value, if cause value is a channel occupancy, not handle, this is because this BSS has broadcasted Uplink State Ind (busy) message when receiving first PTT setup request message; If cause value is not a channel occupancy, then upgrades the interior channel occupancy of BSS2 cluster group and be masked as the free time;
After the user terminal of first transmission PTT setup request message of step 114, affiliated BSS1 is received PTT setup confirm message, enter the intercommunication state.
In this process, periodically to terminal broadcasting Uplink State Ind message, indication reverse traffic channel state still takies (busy) for idle (free) for BSS1 and BSS2; When user terminal receives Uplink State Ind (busy) message, stop to send PTT setup request message, up to receiving Uplink State Ind (free) message.
In this process, can also after sending reverse call request message, TSC set regularly time threshold of timer at BSS, in judging in time threshold, whether both do not received BSS the affirmation message of TSC, do not receive the reverse conversation refuse information of TSC, if then BSS cluster group channel occupancy sign is changed to the free time yet; Otherwise stop this timer after receiving wherein any message.
As shown in Figure 2, Fig. 2 supposes that for user terminal of the present invention carries out the flow chart that reverse traffic channel discharges the user terminal in this cluster group belongs to BSS1 or BSS2, and its detailed process is:
Step 200,201, take user terminal that reverse traffic channel carries out intercommunication and discharge the PTT button and finish the intercommunication state, send PTT uplink release request message to its BSS1;
Step 202, BSS1 send to TSC with this PTT uplink release request message;
Step 203,204, TSC upgrade cluster group state, soon the reverse traffic channel in the TSC cluster group information takies and is converted to the free time, and the user terminal information that will take reverse traffic channel is deleted, to BSS1 and BSS2 broadcasting Uplink State Ind (free) message;
Step 205, BSS1 and BSS2 are changed to the free time with cluster group channel occupancy sign, to user terminal broadcasting Uplink State Ind (free) message that belongs to BSS1 and BSS2;
Step 206, user terminal can carry out seizing of reverse traffic channel after receiving Uplink State Ind (free) message once more.
TSC of the present invention can also replace with dispatching desk.
When user terminal was not operated in the PTT pattern, the method that user terminal is seized reverse traffic channel by user terminal of the present invention can also enter the data communication state.
Method provided by the invention is only made response to first user terminal that sends PTTsetup request message, thereby has been reduced the time delay of whole reverse traffic channel preemption processes in the reverse traffic channel preemption processes; After method provided by the invention is admitted the PTTsetup request message of first user terminal transmission at BSS, the PTT setup request message that the subsequent user terminal is sent directly abandons, do not send the reverse call request of subsequent user terminal to TSC, also do not send response message, thereby the processing that has guaranteed BSS and user terminal is simple and reliable to follow-up user terminal; Method provided by the invention is in the reverse traffic channel preemption processes, TSC broadcasts Uplink State Ind (busy) message to BSS immediately after admitting first PTT uplink request message, stop other PTT user to send PTT setup request message repeatedly as soon as possible, reduced a large number of users terminal and sent of the impact of PTTsetup request message simultaneously BSS and TSC performance.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being made within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (16)
1, the control method of reverse traffic channel in a kind of digital cellular group system is characterized in that this method comprises:
User terminal in A, the cluster group sends reverse call request to affiliated base station system;
First reverse call request that B, base station system treat user terminal send, and to this reverse call request of cluster service center transmission;
C, cluster service center are handled first the reverse call request message that receives, and make the user terminal that sends this reverse call request message take reverse traffic channel and communicate.
2, the method for claim 1 is characterized in that, described step B further comprises:
The follow-up reverse call request message that base station system will receive abandons.
3, the method for claim 1 is characterized in that, described step B further comprises:
The message that base station system takies to all user terminal broadcasting reverse traffic channels that belong to this base station system.
4, method as claimed in claim 3 is characterized in that, the described message that takies to user terminal broadcasting reverse traffic channel is periodic.
5, the method for claim 1, it is characterized in that, described step C further comprises: cluster service center takies message to all base station system broadcasting reverse traffic channels of being administered after the base station system that sends first reverse call request message is returned acknowledge message;
Cluster service center supervention backward send the base station system of reverse call request to return reverse conversation refuse information;
The base station system that sends first reverse call request message is transmitted to this acknowledge message the user terminal that sends first reverse call request message.
6, method as claimed in claim 5 is characterized in that, described to take message to base station system broadcasting reverse traffic channel be periodic.
7, method as claimed in claim 5 is characterized in that, it is channel occupancy that described reverse conversation refuse information is carried cause value.
8, method as claimed in claim 5 is characterized in that, this method further comprises:
When if base station system receives the affirmation message that cluster service center returns, upgrade base station system cluster group information;
If during the reverse conversation refuse information that base station system receives that cluster service center returns, judge whether the cause value of this message is channel occupancy, if this message is not processed method ends; Otherwise, this base station system cluster group channel occupancy sign is changed to the free time.
9, the method for claim 1 is characterized in that, after cluster service center sent first reverse call request, this method further comprised in the described base station system of step B:
In judging in time threshold, base station system whether both do not received the affirmation message of cluster service center after cluster service center sends reverse call request message, do not receive the reverse conversation refuse information of cluster centers, if then base station system cluster group channel occupancy sign is changed to the free time yet; Otherwise do not process.
10, the method for claim 1 is characterized in that, before first reverse call request that the described base station system treat user terminal of step B sends, this method further comprises:
Base station system judges that whether this base station system cluster group channel occupancy sign is idle, if be idle, and execution in step B then, renewal base station system cluster group information, and this busy flag is changed to takies; If for taking, then finish.
11, the method for claim 1 is characterized in that, before the described cluster service center of step C was handled first the reverse call request message that receives, this method further comprised:
Cluster service center judges whether cluster service center cluster group channel occupancy sign is idle, if idle, then execution in step C upgrades cluster service center cluster group information, and puts this busy flag for taking; Otherwise, respond oppositely conversation refuse information to base station system.
12, the method for claim 1 is characterized in that, described cluster service center is the upper level control centre of base station system in the digital cellular group system.
13, the method for claim 1 is characterized in that, this method further comprises:
D, the user terminal that takies reverse traffic channel finish reverse link communication, send oppositely to affiliated base station system that conversation discharges request message, and this message is transmitted to cluster service center by this base station system;
E, cluster service center are upgraded cluster group channel information, to the message of the base station system broadcasting reverse traffic channel free time of being administered;
F, base station system are broadcasted the message of reverse traffic channel free time to the user terminal that belongs to this base station system.
14, method as claimed in claim 13 is characterized in that, before the base station system message of broadcasting reverse traffic channel free time, this method further comprises in the described cluster service center of step e:
Cluster service center is changed to the free time with this cluster service center cluster group channel occupancy sign.
15, method as claimed in claim 13 is characterized in that, before the message of the user terminal broadcasting reverse traffic channel free time that belongs to this base station system, this method further comprises in the described base station system of step F:
Base station system is changed to the free time with this base station system cluster group channel occupancy sign.
16, method as claimed in claim 13 is characterized in that, the described message to the base station system broadcasting reverse traffic channel free time of step e is periodic;
The described message to the user terminal broadcasting reverse traffic channel free time of step F is periodic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031552684A CN100344169C (en) | 2003-08-27 | 2003-08-27 | Method for controlling reverse service channel in digital honeycomb cluster system |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB031552684A CN100344169C (en) | 2003-08-27 | 2003-08-27 | Method for controlling reverse service channel in digital honeycomb cluster system |
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| CN1592429A true CN1592429A (en) | 2005-03-09 |
| CN100344169C CN100344169C (en) | 2007-10-17 |
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| CNB031552684A Expired - Fee Related CN100344169C (en) | 2003-08-27 | 2003-08-27 | Method for controlling reverse service channel in digital honeycomb cluster system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100377606C (en) * | 2005-12-08 | 2008-03-26 | 华为技术有限公司 | Method for realizing business not relative to group calling and system therefor |
| CN100411459C (en) * | 2005-07-20 | 2008-08-13 | 华为技术有限公司 | Method and system for realizing press-and-talk business |
| CN100420317C (en) * | 2005-12-09 | 2008-09-17 | 华为技术有限公司 | Method and system for realizing business not relative to group calling |
| CN1997182B (en) * | 2006-12-04 | 2010-07-07 | 华为技术有限公司 | A control method and system for speaking right |
| CN101180861B (en) * | 2005-05-24 | 2011-07-06 | 摩托罗拉移动公司 | Method and apparatus for establishing an audio link to a wireless earpiece in reduced time |
| CN101223714B (en) * | 2005-07-20 | 2011-10-26 | 京瓷株式会社 | Mobile telephone unit, informing method, and program |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7603126B2 (en) * | 2001-05-15 | 2009-10-13 | Qualcomm Incorporated | Method and apparatus for avoiding simultaneous service origination and paging in a group communication network |
| US6982961B2 (en) * | 2001-07-19 | 2006-01-03 | Telefonaktiebolaget Lm Ericsson (Publ) | Push-to-talk and push-to-conference in a CDMA wireless communications system |
| US20030078064A1 (en) * | 2001-10-22 | 2003-04-24 | Chan Victor H. | System and method for queuing talk requests in wireless dispatch system |
-
2003
- 2003-08-27 CN CNB031552684A patent/CN100344169C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101180861B (en) * | 2005-05-24 | 2011-07-06 | 摩托罗拉移动公司 | Method and apparatus for establishing an audio link to a wireless earpiece in reduced time |
| CN100411459C (en) * | 2005-07-20 | 2008-08-13 | 华为技术有限公司 | Method and system for realizing press-and-talk business |
| CN101223714B (en) * | 2005-07-20 | 2011-10-26 | 京瓷株式会社 | Mobile telephone unit, informing method, and program |
| CN100377606C (en) * | 2005-12-08 | 2008-03-26 | 华为技术有限公司 | Method for realizing business not relative to group calling and system therefor |
| CN100420317C (en) * | 2005-12-09 | 2008-09-17 | 华为技术有限公司 | Method and system for realizing business not relative to group calling |
| CN1997182B (en) * | 2006-12-04 | 2010-07-07 | 华为技术有限公司 | A control method and system for speaking right |
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|---|---|
| CN100344169C (en) | 2007-10-17 |
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