CN102300168A - Method and system for realizing trunking communication - Google Patents
Method and system for realizing trunking communication Download PDFInfo
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- CN102300168A CN102300168A CN2010102157593A CN201010215759A CN102300168A CN 102300168 A CN102300168 A CN 102300168A CN 2010102157593 A CN2010102157593 A CN 2010102157593A CN 201010215759 A CN201010215759 A CN 201010215759A CN 102300168 A CN102300168 A CN 102300168A
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Abstract
The invention discloses a method and system for realizing trunking communication. When a terminal initiates a trunking call, a base station selects a unicast or multicast manner for communication according to a communication mode selection policy. Especially, when the base station has a lower load (the current load result is lower then a preset threshold, the unicast communication mode is selected; and when the base station has a heavy load (the current load result exceeds the preset threshold), the multicast communication mode is selected. According to the invention, the unicast communication mode and the multicast communication mode are better combined so that respective advantages of the two modes are fully developed in a trunking system. According to the method disclosed by the invention, the communication quality is furthest ensured, system resources are saved under the condition of high system load, and the system capacity is increased, therefore, the service quality is improved and the user experience is ensured.
Description
Technical field
The present invention relates to trunking communicating technology, refer to a kind of method and system that realize trunking communication especially.
Background technology
The private wireless communication system that trunked communication system develops in order to satisfy the industry user to command demand, use towards specific industry.In trunked communication system, a large amount of wireless users share a small amount of wireless channel, are that main body is used with the command scheduling, are a kind of multipurpose, dynamical wireless communication system.Trunked communication system in a government office, the market that has a wide range of applications, field such as public safety, emergency communication, electric power, civil aviaton, oilization and army.
Clean culture is point-to-point communication, and multicast is the communication of point-to-multipoint.Unicast communication is for service quality, and response aspect in time has favorable user experience.
At present, adopt the multicast mode in the trunking communication,, saved system resource by adopting special-purpose shared channel.But, because the shared same channel of all colony terminals, can be interfered unavoidably on the transfer of data, to load when big when network side, it is more serious that this interference can become, thereby influenced speech quality, reduced service quality.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method and system that realize trunking communication.Can guarantee under the prerequisite that economizes on resources, assurance speech quality, thus improve service quality.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of method that realizes trunking communication comprises:
The base station sets in advance the communication mode selection strategy;
When terminal was initiated trunked call, trunked base station selected clean culture or multicast mode to communicate according to the communication mode selection strategy.
Described communication mode selection strategy is provided with according to the base station situation.
Described communication mode selection strategy is: when the base station load surpassed predetermined threshold value, communication mode was the multicast mode, and when the base station load was lower than predetermined threshold value, communication mode was a mode of unicast.
Described according to the communication mode selection strategy, select clean culture or multicast mode to communicate and comprise:
Described base station inquiry load condition, if when the preload result is lower than predetermined threshold value, the terminal in the then described trunked call selects to adopt the unicast communication mode to communicate at this call business; Surpass predetermined threshold value if work as the preload result, the terminal in the then described trunked call selects to adopt the communication mode of multicast to communicate at this call business;
The periodically signalling of bouquet paging in the sub-district of described trunked base station is carried in the beep-page message and is used to represent the mode of unicast or the communication mode sign of multicast mode;
Described base station communicates after the call business Resources allocation for the terminal in the trunked call according to the communication mode of selecting.
The described communication mode of selecting is the unicast communication mode; The communication mode that described basis is selected, for the call business Resources allocation of terminal comprises:
The described terminal of clustered paging of receiving connects with base station and core net respectively, and the terminal that the base station is respectively is separately set up example; The up cluster data that core net will be received are transmitted to each example of being built respectively, send to corresponding terminal called respectively by each example again, to communicate.
The described communication mode of selecting is the cast communication mode; The communication mode that described basis is selected, for the call business Resources allocation of terminal comprises:
Trunked base station is that colony terminal is set up the cluster example, and the up cluster data that core net will be received are issued the cluster example of foundation, send the data to colony terminal by the cluster example again, to communicate.
Described predetermined threshold value is a load value, or the load percent value, or the network side number of users that can hold.
A kind of system that realizes trunking communication comprises the base station at least, and a plurality of terminals that participate in trunking communication, wherein,
The base station wherein is provided with the communication mode selection strategy; Be used to receive end side and initiate trunked call,, select clean culture or multicast mode to communicate according to the communication mode selection strategy;
Terminal comprises calling terminal and by the terminal called group that at least one terminal is formed, is used to initiate trunked call, communicates according to base station selected clean culture or the multicast mode that goes out between calling terminal and the terminal called group.
Described communication mode selection strategy is: when the base station load surpassed predetermined threshold value, communication mode was communicated by letter for the multicast mode, and when the base station load was lower than predetermined threshold value, communication mode was mode of unicast communication.
Described base station specifically is used for:
Described base station receives end side and initiates trunked call, the inquiry load condition, and when the preload result is lower than predetermined threshold value, the terminal that then is defined as in the described trunked call selects to adopt the unicast communication mode to communicate at this call business; Surpassing predetermined threshold value as the preload result, the terminal that is defined as in the described trunked call selects to adopt the communication mode of multicast to communicate at this call business;
The periodically signalling of bouquet paging in the sub-district of described trunked base station is carried in the beep-page message and is used to represent the mode of unicast or the communication mode sign of multicast mode;
Described base station communicates after the call business Resources allocation for the terminal in the trunked call according to the communication mode of selecting.
Described system also comprises core net;
The described communication mode of selecting is the unicast communication mode;
The described terminal of receiving clustered paging, specifically be used for respectively with its under base station and core net connect,
Described base station, the terminal that also is used to be respectively is separately set up example;
Core net, be used to receive up cluster data after, the up cluster data of receiving are transmitted to each example of being built respectively, send to corresponding terminal called respectively by each example again.
The described communication mode of selecting is the cast communication mode;
Described trunked base station also is used to colony terminal to set up the cluster example;
Described core net is used to receive up cluster data, gives the cluster example of setting up with the up cluster data forwarding of receiving, sends the data to colony terminal by the cluster example again.
The technical scheme that provides from the invention described above as can be seen, when terminal was initiated trunked call, the base station selected clean culture or multicast mode to communicate according to the communication mode selection strategy.Especially, when base station load when light (result is lower than predetermined threshold value when preload), select to adopt the unicast communication mode; And when heavier (when the preload result surpasses predetermined threshold value) loaded in the base station, select to adopt the cast communication mode.The present invention gets up clean culture and two kinds of communication mode good binding of multicast, makes both advantage separately be fully reflected in group system.By the inventive method, both ensured communication quality to the full extent, under the situation of system's high load capacity, saved system resource again, improve power system capacity, thereby improved service quality, guaranteed user experience.
Description of drawings
Fig. 1 realizes the flow chart of the method for trunking communication for the present invention;
Fig. 2 realizes the composition structural representation of the system of trunking communication for the present invention;
Fig. 3 realizes the flow chart of first embodiment of the method for trunking communication for the present invention;
Fig. 4 realizes the flow chart of second embodiment of the method for trunking communication for the present invention.
Embodiment
Fig. 1 is the flow chart that the present invention realizes the method for trunking communication, as shown in Figure 1, comprising:
Step 100: the base station sets in advance the communication mode selection strategy.
In this step, the communication mode selection strategy, be provided with according to the base station situation, when being provided with according to the base station load condition, the communication mode selection strategy is: when the base station load of machinery systems surpasses a certain predetermined threshold value, communication mode is the multicast mode, and when the load of machinery systems was lower than a certain predetermined threshold value, communication mode was a mode of unicast.
Wherein, predetermined threshold value can be a load value, or the load percent value, or the network side number of users that can hold or the like.
Step 101: when terminal was initiated trunked call, trunked base station selected clean culture or multicast mode to communicate according to the communication mode selection strategy.Here, the base station under each colony terminal in the cluster multi call is also referred to as trunked base station.
This step specific implementation roughly comprises:
At first, when terminal is initiated trunked call, can connect with base station and core net, core net when finding that current calling is trunked call, can trigger clustered paging when receiving the initial UE context message, and initiates clustered paging to trunked base station.Specific implementation belongs to prior art, and its implementation is not used in qualification protection range of the present invention.
Then, after trunked base station is received clustered paging, suppose the communication mode selection strategy that trunked base station is provided with according to load condition, so, trunked base station inquiry load condition, if when the preload result is lower than predetermined threshold value, then the terminal in the trunked call selects to adopt the unicast communication mode to communicate at this call business; Surpass predetermined threshold value if work as the preload result, then the terminal in the trunked call selects to adopt the communication mode of multicast to communicate at this call business; Trunked base station is set up the cluster example after receiving clustered paging immediately, and periodically signalling of bouquet paging in the sub-district, carries in the beep-page message to be used to represent the mode of unicast or the communication mode sign of multicast mode.
At last, described base station is according to the communication mode of selecting, communicate after the call business Resources allocation for the terminal in the trunked call: if the communication mode sign is shown as the multicast mode, after then core net is received up cluster data, with the cluster example (be trunked base station receive the cluster example clustered paging after immediately set up) of up cluster data forwarding, send the data to colony terminal (participating in each terminal called of trunking communication) by the cluster example again to all trunked base stations; If the communication mode establishment is shown as mode of unicast, the terminal of receiving clustered paging connects with base station and core net respectively, the terminal that the base station is respectively is separately set up example, after core net is received up cluster data, with up cluster data forwarding builds for each base station for its terminal called of having jurisdiction over example, send to each terminal called of its correspondence more respectively by these examples.
From the inventive method as seen, when base station load when light (result is lower than predetermined threshold value when preload), adopt the unicast communication mode; And when heavier (when the preload result surpasses predetermined threshold value) loaded in the base station, adopt the cast communication mode.By the inventive method, both ensured communication quality to the full extent, under the situation of system's high load capacity, saved system resource again, improve power system capacity, thereby improved service quality, guaranteed user experience.
At the inventive method, a kind of system that realizes trunking communication also is provided, as shown in Figure 2, comprise the base station at least, and a plurality of terminal, wherein,
The base station wherein is provided with the communication mode selection strategy; Be used to receive the trunked call that terminal is initiated,, select clean culture or multicast mode to communicate according to the communication mode selection strategy.Here, the base station under each colony terminal in the cluster group is also referred to as trunked base station.
Terminal comprises calling terminal and by the terminal called group that at least one terminal is formed, is used to initiate trunked call, communicates according to base station selected clean culture or the multicast mode that goes out between calling terminal and the terminal called group.
Below in conjunction with embodiment the inventive method is described in detail.In following examples, suppose that the communication mode selection strategy is: when the load of machinery systems surpassed predetermined threshold value, communication mode was communicated by letter for the multicast mode, and when the base station load of machinery systems was lower than predetermined threshold value, communication mode was mode of unicast communication.
Fig. 3 realizes the flow chart of first embodiment of the method for trunking communication for the present invention, among first embodiment, suppose that terminal 1 initiates trunked call, and terminal 2 be an interior terminal called of cluster group; Each base station sets load threshold value, when the base station load was lower than load threshold value, it was lighter to be called load, and when the base station load overloaded threshold value, it was heavier to be called load.Here, the base station under each colony terminal in the cluster group is also referred to as trunked base station.As shown in Figure 3, may further comprise the steps:
Step 300: terminal 1 is initiated trunked call, and terminal 1 sends to the base station and inserts request message at random.
Step 301: accidental access response is replied in the base station, carries the ascending resource of distributing to terminal 1 in accidental access response.
Step 302: terminal 1 is being set up request message for sending Radio Link control (RRC) on the ascending resource of its distribution.
Step 303: the base station is returned RRC to terminal 1 and is set up message.
Step 304: after terminal 1 receives that RRC sets up message, send RRC foundation to the base station and finish message, finish in this message carrying non-access layer information in RRC foundation, include the cluster number information in the non-access layer information.
Step 305: the base station is received that RRC sets up and is finished message, sends initial terminal (UE) context message to core net.
Step 306: core net is received the initial UE context message, find that current calling is a trunked call, set up the trunked call example, trigger clustered paging, and launch the cluster carrying to trunked base station and set up request message, beam back the UE context to the base station of initiating the initial UE context message simultaneously and set up request message.
Step 307: the base station receives that the UE context sets up request message, sends the RRC reallocation message to terminal 1.
Step 308: terminal 1 is received the RRC reallocation message, sends RRC reprovision response message.
Step 309: RRC reprovision response message is received in the base station, sends the initial UE context to core net and sets up request response.
Step 310～step 312: trunked base station is received clustered paging, inquires about self load condition, supposes to load this moment for heavier, then selects to adopt the multicast mode to communicate by letter; Simultaneously, periodically signalling of bouquet paging in the sub-district, and in clustered paging message, carry the communication mode sign that the multicast mode is adopted in expression.
Step 313～step 314: trunked base station receives that the cluster carrying of core net sets up request message, sets up the cluster example, and sets up response message to the carrying of core net signalling of bouquet.
Step 315～step 317: core net is received up cluster data, and the cluster example with up cluster data forwarding is set up to trunked base station sends the data to terminal 2 by the cluster example again.2 at terminal 1 and terminal adopt the cast communication mode to communicate.
Wherein, step 307～step 309, with step 310～step 312, and the execution of step 313～step 314 does not have strict sequencing.
Fig. 4 realizes the flow chart of second embodiment of the method for trunking communication for the present invention, among second embodiment, suppose that terminal 1 initiates trunked call, and terminal 2 be an interior terminal called of cluster group; Each base station sets load threshold value, when the base station load was lower than load threshold value, it was lighter to be called load, and when the base station load overloaded threshold value, it was heavier to be called load.Here, the base station under each colony terminal in the cluster group is also referred to as trunked base station.As shown in Figure 4, may further comprise the steps:
Step 400: terminal is initiated trunked call, and terminal 1 sends to the base station and inserts request message at random.
Step 401: accidental access response is replied in the base station, carries the ascending resource of distributing to terminal 1 in accidental access response.
Step 402: terminal 1 sends RRC and sets up request message on the ascending resource that distributes.
Step 403: the base station is returned RRC to terminal 1 and is set up message.
Step 404: after terminal 1 receives that RRC sets up message, send RRC foundation to the base station and finish message, finish carrying non-access layer information in the message in RRC foundation, include the cluster number information in the non-access layer information.
Step 405: the base station is received that RRC sets up and is finished message, sends the initial UE context message to core net.
Step 406: core net is received the initial UE context message, find that current calling is a trunked call, set up the trunked call example, trigger clustered paging, set up request message to the carrying of trunked base station emission cluster, simultaneously, send the initial UE context to the base station of initiating the initial UE context message and set up request message.
Step 407: the base station receives that the initial UE context sets up request message, sends the RRC reallocation message to terminal 1.
Step 408: terminal 1 is received the RRC reallocation message, returns RRC reprovision response message to the base station.
Step 409: RRC reprovision response message is received in the base station, sends the initial UE context to core net and sets up request response.
Step 410～step 412: trunked base station is received clustered paging, inquire about self load condition, suppose to load this moment, select to adopt mode of unicast communication to lighter, the communication mode sign that mode of unicast is adopted in expression is carried in periodically signalling of bouquet paging in the sub-district simultaneously in the beep-page message.
Step 413～step 414: trunked base station receives that the cluster carrying of core net sets up request message, sets up the cluster example, and returns the cluster carrying to core net and set up response message.
Step 415～step 425: after terminal 2 was received the paging of the communication mode sign that carries expression employing mode of unicast, transmission inserted request message at random to the base station; Then,
Accidental access response is replied in the base station, carries the ascending resource of distributing to terminal 2 in accidental access response, and terminal 2 sends RRC and sets up request message on the ascending resource that distributes; The base station is returned RRC to terminal 2 and is set up message; After terminal 2 receives that RRC sets up message, send RRC to the base station and set up and finish message, the base station is received that RRC sets up and is finished message, sends the initial UE context message to core net; After core net is received the initial UE context message, send the initial UE context to the base station and set up request message, for terminal 2 is set up example; After the base station receives that request message set up in the initial UE context, send the RRC reallocation message to terminal 2; Terminal 2 is received the RRC reallocation message, returns RRC reprovision response message; RRC reprovision response message is received in the base station, returns the UE context to core net and sets up request response.
Step 426～step 428: core net is received up cluster data, and giving terminal 2 affiliated base stations with up cluster data forwarding is the example that terminal 2 is built, and sends to terminal called 2 by this example again.
Wherein, step 407～step 409, do not have strict sequencing with the execution of step 410～step 412 and step 413～step 414.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention, all any modifications of being done 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 (12)
1. a method that realizes trunking communication is characterized in that, comprising:
The base station sets in advance the communication mode selection strategy;
When terminal was initiated trunked call, trunked base station selected clean culture or multicast mode to communicate according to the communication mode selection strategy.
2. method according to claim 1 is characterized in that, described communication mode selection strategy is provided with according to the base station situation.
3. method according to claim 2 is characterized in that, described communication mode selection strategy is: when the base station load surpassed predetermined threshold value, communication mode was the multicast mode, and when the base station load was lower than predetermined threshold value, communication mode was a mode of unicast.
4. method according to claim 3 is characterized in that, and is described according to the communication mode selection strategy, selects clean culture or multicast mode to communicate and comprises:
Described base station inquiry load condition, if when the preload result is lower than predetermined threshold value, the terminal in the then described trunked call selects to adopt the unicast communication mode to communicate at this call business; Surpass predetermined threshold value if work as the preload result, the terminal in the then described trunked call selects to adopt the communication mode of multicast to communicate at this call business;
The periodically signalling of bouquet paging in the sub-district of described trunked base station is carried in the beep-page message and is used to represent the mode of unicast or the communication mode sign of multicast mode;
Described base station communicates after the call business Resources allocation for the terminal in the trunked call according to the communication mode of selecting.
5. method according to claim 4 is characterized in that, the described communication mode of selecting is the unicast communication mode; The communication mode that described basis is selected, for the call business Resources allocation of terminal comprises:
The described terminal of clustered paging of receiving connects with base station and core net respectively, and the terminal that the base station is respectively is separately set up example; The up cluster data that core net will be received are transmitted to each example of being built respectively, send to corresponding terminal called respectively by each example again, to communicate.
6. method according to claim 4 is characterized in that, the described communication mode of selecting is the cast communication mode; The communication mode that described basis is selected, for the call business Resources allocation of terminal comprises:
Trunked base station is that colony terminal is set up the cluster example, and the up cluster data that core net will be received are issued the cluster example of foundation, send the data to colony terminal by the cluster example again, to communicate.
7. according to each described method of claim 3～6, it is characterized in that described predetermined threshold value is a load value, or the load percent value, or the network side number of users that can hold.
8. a system that realizes trunking communication is characterized in that, comprises the base station at least, and a plurality of terminals that participate in trunking communication, wherein,
The base station wherein is provided with the communication mode selection strategy; Be used to receive end side and initiate trunked call,, select clean culture or multicast mode to communicate according to the communication mode selection strategy;
Terminal comprises calling terminal and by the terminal called group that at least one terminal is formed, is used to initiate trunked call, communicates according to base station selected clean culture or the multicast mode that goes out between calling terminal and the terminal called group.
9. system according to claim 8 is characterized in that, described communication mode selection strategy is: when the base station load surpassed predetermined threshold value, communication mode was communicated by letter for the multicast mode, and when the base station load was lower than predetermined threshold value, communication mode was mode of unicast communication.
10. according to Claim 8 or 9 described systems, it is characterized in that described base station specifically is used for:
Described base station receives end side and initiates trunked call, the inquiry load condition, and when the preload result is lower than predetermined threshold value, the terminal that then is defined as in the described trunked call selects to adopt the unicast communication mode to communicate at this call business; Surpassing predetermined threshold value as the preload result, the terminal that is defined as in the described trunked call selects to adopt the communication mode of multicast to communicate at this call business;
The periodically signalling of bouquet paging in the sub-district of described trunked base station is carried in the beep-page message and is used to represent the mode of unicast or the communication mode sign of multicast mode;
Described base station communicates after the call business Resources allocation for the terminal in the trunked call according to the communication mode of selecting.
11. system according to claim 10 is characterized in that, described system also comprises core net;
The described communication mode of selecting is the unicast communication mode;
The described terminal of receiving clustered paging, specifically be used for respectively with its under base station and core net connect,
Described base station, the terminal that also is used to be respectively is separately set up example;
Core net, be used to receive up cluster data after, the up cluster data of receiving are transmitted to each example of being built respectively, send to corresponding terminal called respectively by each example again.
12. system according to claim 10 is characterized in that, the described communication mode of selecting is the cast communication mode;
Described trunked base station also is used to colony terminal to set up the cluster example;
Described core net is used to receive up cluster data, gives the cluster example of setting up with the up cluster data forwarding of receiving, sends the data to colony terminal by the cluster example again.
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Also Published As
| Publication number | Publication date |
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| WO2011160469A1 (en) | 2011-12-29 |
| CN102300168B (en) | 2015-08-12 |
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