CN106792847B - Speaking right authorization method and system in distributed fault weakening cluster communication - Google Patents
Speaking right authorization method and system in distributed fault weakening cluster communication Download PDFInfo
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Abstract
The invention discloses a speaking right authorization method and a speaking right authorization system in distributed fault weakening cluster communication, wherein the method comprises the following steps: the terminal sends a speaking right application to the base station; after receiving a speaking right application sent by a source terminal, the source base station updates a speaking right application terminal list maintained by the source base station and simultaneously forwards the speaking right application to other base stations; after receiving the speaking right application forwarded by the source base station, the other base stations update the maintained speaking right application terminal list; base stations in the group calling area grant speaking right to the terminal in sequence; the source base station deletes the authorized terminal from the list and sends a talk right notification message; after receiving the speaking right notification message triggered by the source base station, other base stations update the maintained speaking right application terminal list, delete the authorized terminal from the list, and send the speaking right notification message to other terminals; the method can ensure that the respective maintained speaking right application terminal lists are synchronous, and ensure that only one terminal obtains the speaking right at each moment when the base station grants the speaking right to the terminal.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a speaking right authorization method and a speaking right authorization system in distributed fault weakening cluster communication.
Background
The trunking communication system is a special wireless communication system developed for meeting the demand of commanding and scheduling of industry users and oriented to specific industry applications, a large number of wireless users in the system share a small number of wireless channels, and the system is mainly applied to commanding and scheduling, and is a multipurpose and high-efficiency wireless communication system. The cluster communication system has wide application markets in the fields of government departments, public safety, emergency communication, electric power, civil aviation, petrochemical industry, army and the like.
The distributed failure weakening system is a communication system formed by base stations working in a failure weakening state, wherein each base station only caches subscription information of terminals in a coverage area, group subscription information corresponding to the terminals and the like, and when services such as group calling and the like need to be established, the base stations need to interact with each other to expand the service range of the group calling to a plurality of base stations.
The existing speaking right application process under the weakening of faults only considers the realization under a single base station, namely, whether the speaking right can be granted or not is judged only within the range of the single base station; however, in the distributed failure weakening system, the group call service is extended to a plurality of base stations, and when terminals of the plurality of base stations are considered, the situation that the call right may be simultaneously applied occurs; however, in the process of group calling service, only one terminal can have the talk right at each moment; therefore, in order to avoid granting the talk right to multiple terminals at the same time, a single base station needs to exchange information with other base stations when granting the talk right.
Therefore, the existing fault weakening speaking right application flow is not suitable for the distributed fault weakening system.
Disclosure of Invention
The technical problem to be solved by the invention is how to overcome the limitation of granting speech right service by a single base station in a cluster communication distributed fail-soft system and the defect that terminals of a plurality of base stations may grant speech right simultaneously.
It should be noted that the function of weakening a failure in the broadband trunking communication system means that when communication between the base station and the core network is interrupted or the core network fails, the base station can process registration and service requests of terminals in its coverage area, and support services such as group call and single call. When the fault between the base station and the core network disappears, the system can automatically recover to a normal working state, wherein the fault weakening in the invention is distributed fault weakening.
The invention provides a speaking right authorization method in distributed fault weakening cluster communication, which comprises the following steps:
a terminal sends a speaking right application to a base station, wherein the terminal is a source terminal, and the base station is a source base station;
after receiving a speaking right application sent by a source terminal, the source base station updates a speaking right application terminal list maintained by the source base station, inserts the speaking right application of the source terminal into the last of the list, and simultaneously forwards the speaking right application to other base stations in a group calling area;
after receiving the speaking right application forwarded by the source base station, the other base stations update the speaking right application terminal lists maintained by the other base stations;
all base stations in the group calling area grant speaking right to all terminals in sequence according to the priority sequence of the maintained speaking right application terminal list;
when a source base station determines that a right of speech is granted to a certain terminal in all terminals, the source base station and the certain terminal establish an uplink service special bearer and send a right of speech authorization message to the certain terminal;
the source base station updates a local maintained speaking right application terminal list, deletes the authorized terminal from the list and sends a speaking right notification message;
and after receiving the speaking right notification message triggered by the source base station, the other base stations update the speaking right application terminal list maintained by the other base stations, delete the authorized terminal from the list, and send the speaking right notification message to the other terminals.
Further, all base stations in the group calling area include the source base station and other base stations, and all terminals include the source terminal and other terminals; and the rest terminals are terminals except the deleted terminal in all the terminals.
Further, for a certain base station, a terminal in the certain base station can be granted the talk right only when the terminal in the certain base station is located at the first of the talk right applying terminal list maintained by the certain base station.
Further, when the source base station determines to grant the right of speech for a certain terminal among all terminals, the source base station establishes an uplink service dedicated bearer with the certain terminal and sends a right of speech grant message to the certain terminal, and then,
and the certain terminal responds to the speaking right authorization confirmation message to the source base station.
Further, the source base station updates a local maintained speaking right application terminal list, deletes the authorized terminal from the list, and sends a speaking right notification message;
the sending of the talk burst notification message includes:
the source base station sends a speaking right notification message to the source terminal;
and the source base station triggers other base stations to send speaking right notification messages.
The invention also provides a speaking right authorization system in distributed fault weakening cluster communication, which comprises:
the system comprises a speaking right application module, a speaking right application module and a speaking right processing module, wherein the speaking right application module is used for enabling a terminal to send speaking right application to a base station, the terminal is a source terminal, and the base station is a source base station;
the source base station list updating module is used for updating a speaking right application terminal list maintained by a source base station after the source base station receives a speaking right application sent by a source terminal, inserting the speaking right application of the source terminal into the last of the list, and simultaneously forwarding the speaking right application to other base stations in a group calling area;
the other base station list updating module is used for updating the speaking right application terminal list maintained by the other base stations after the other base stations receive the speaking right application forwarded by the source base station;
the speaking right granting module is used for enabling all base stations in the group calling area to grant speaking rights to all terminals in sequence according to the priority sequence of the maintained speaking right application terminal list;
the special bearer establishing module is used for establishing an uplink service special bearer with a certain terminal and sending a talk right authorization message to the certain terminal when a source base station determines that the talk right is granted to the certain terminal in all terminals;
a source base station terminal deleting module, configured to enable the source base station to update a locally maintained speech right application terminal list, delete an authorized terminal from the list, and send a speech right notification message;
and the other base station terminal deleting module is used for updating the speaking right application terminal list maintained by the other base station after the other base station receives the speaking right notification message triggered by the source base station, deleting the authorized terminal from the list and sending the speaking right notification message to the other terminals.
Further, all base stations in the group calling area include the source base station and other base stations, and all terminals include the source terminal and other terminals; and the rest terminals are terminals except the deleted terminal in all the terminals.
Further, for a certain base station, a terminal in the certain base station can be granted the talk right only when the terminal in the certain base station is located at the first of the talk right applying terminal list maintained by the certain base station.
Further, the dedicated bearer establishing module is further configured to enable the certain terminal to respond to the source base station with a talk right authorization confirmation message.
Further, the deleting the sending talk right notification message in the module by the source base station terminal includes:
the source base station sends a speaking right notification message to the source terminal;
and the source base station triggers other base stations to send speaking right notification messages.
The invention has the beneficial effects that:
in the speaking right application process of the fault weakening cluster communication system, the service can be expanded to a plurality of base stations through information interaction among the base stations; after receiving the speaking right request, the base station can determine whether to grant the speaking right and when to grant the speaking right through interaction with other base stations.
In the speaking right application process, the invention can ensure the synchronization of the respective maintained speaking right application terminal lists in the base stations, thereby ensuring that only one terminal obtains the speaking right at each moment when each base station grants the speaking right to the terminal in the group calling process.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a signaling flow diagram of a prior art speaking right application;
fig. 2 is a flowchart of a method of a talk burst authorization method in distributed fail-soft cluster communication according to an embodiment a;
fig. 3 is a signaling flow diagram of a talk burst authorization method in distributed fail-soft trunking communication according to the first embodiment;
fig. 4 is a system block diagram of the talk burst authority system in the distributed fail-soft cluster communication according to the second embodiment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The existing broadband trunking communication system has a fail-soft function only considering implementation in a single base station, as shown in fig. 1.
In fig. 1, UE (user equipment) is a terminal, UEs are other terminals in the same base station, and RRC connection is a process of allocating radio resources to the UE by a network when the UE accesses the network;
specifically, the steps 1-4 are used for establishing RRC connection between the idle terminal and the base station;
step 5 is used for sending a speaking right request;
6-8, establishing uplink special bearing for the terminal;
9-10, sending a speaking right authorization notice and confirmation;
step 11 is used to make a talk burst announcement.
It can be seen from the speaking right application in the prior art that when the base station receives the speaking right request sent by the terminal, the base station only judges whether the speaking right can be granted, and if yes, the base station allocates a special bearer for the base station and performs speaking right notification; however, in the distributed fail-soft system, since the group call service is extended to a plurality of base stations, when the terminals of different base stations apply for the right of speaking, a single base station cannot determine whether to grant the right of speaking, but needs to interact with other base stations to determine whether to grant the right of speaking and when to grant the right of speaking according to the right of speaking application conditions of the terminals of other base stations.
The first embodiment is as follows:
as shown in fig. 2-3, this embodiment provides a method for speaking right authorization in distributed fail-soft cluster communication, where the method includes:
s101, a terminal sends a speaking right application to a base station, wherein the terminal is a source terminal, and the base station is a source base station;
s102, after receiving a speaking right application sent by a source terminal, the source base station updates a speaking right application terminal list maintained by the source base station, inserts the speaking right application of the source terminal to the last of the list, and simultaneously forwards the speaking right application to other base stations in a group calling area;
s103, after receiving the speaking right application forwarded by the source base station, the other base stations update speaking right application terminal lists maintained by the other base stations;
s104, all base stations in the group calling area grant speaking rights to all terminals in sequence according to the priority sequence of the maintained speaking right application terminal list;
s105, when a source base station determines that a speech right is granted to a certain terminal in all terminals, the source base station and the certain terminal establish an uplink service special bearer and send a speech right authorization message to the certain terminal;
it should be noted that, in the LTE network, an EPS (Evolved Packet System) bearer may be divided into two types according to the establishment time: default Bearer (Default EPS Bearer), Dedicated Bearer (Dedicated EPS Bearer).
Starting from the UE (terminal) Attach (Attach) network, a bearer must be established, which is the "default bearer" that is created when the UE attaches to the network and remains active until the UE detaches from the network (Detach).
Bearers created after the default bearer are all referred to as "dedicated bearers". For example, if the UE initially connects to the network in order to access the network, then at the time of UE Attach, it is assigned a "default bearer" that can provide data access services. If UE wants to initiate voice call later, the voice service has QoS requirement, the core network defines the voice service QoS as GBR (Guaranteed Bit Rate) service; then the original default bearer (Qos type Non-GBR) will not satisfy the Qos requirement of the voice call, and a new bearer, called "dedicated bearer", needs to be created.
Further, for a certain base station, a terminal in the certain base station can be granted the talk right only when the terminal in the certain base station is located at the first of the talk right applying terminal list maintained by the certain base station.
Further, when the source base station determines to grant the right of speech for a certain terminal among all terminals, the source base station establishes an uplink service dedicated bearer with the certain terminal and sends a right of speech grant message to the certain terminal, and then,
and the certain terminal responds to the speaking right authorization confirmation message to the source base station.
S106, the source base station updates a local maintained speaking right application terminal list, deletes authorized terminals from the list and sends a speaking right notification message;
and S107, after receiving the speaking right notification message triggered by the source base station, other base stations update the speaking right application terminal list maintained by the other base stations, delete the authorized terminal from the list, and send the speaking right notification message to other terminals.
The sending of the talk burst notification message includes:
the source base station sends a speaking right notification message to the source terminal;
and the source base station triggers other base stations to send speaking right notification messages.
Further, all base stations in the group calling area include the source base station and other base stations, and all terminals include the source terminal and other terminals; and the rest terminals are terminals except the deleted terminal in all the terminals.
Example two:
as shown in fig. 4, this embodiment provides a talk right authorization system in distributed fail-soft cluster communication, where the system includes:
a speaking right application module 110, configured to enable a terminal to send a speaking right application to a base station, where the terminal is a source terminal and the base station is a source base station;
a source base station list updating module 210, configured to update a speech right application terminal list maintained by a source base station after the source base station receives a speech right application sent by a source terminal, insert the speech right application of the source terminal into the last of the list, and forward the speech right application to other base stations in a group calling area;
the other base station list updating module 310 is configured to update the speaking right application terminal list maintained by the other base station after the other base station receives the speaking right application forwarded by the source base station;
a speaking right granting module 410 for enabling all base stations in the group calling area to grant speaking right to all terminals in sequence according to the priority order of the maintained speaking right application terminal list;
a dedicated bearer establishing module 510, configured to, when a source base station determines that a right of speech is granted to a certain terminal among all terminals, establish, by the source base station, an uplink service dedicated bearer with the certain terminal, and send a right of speech grant message to the certain terminal;
it should be noted that, the dedicated bearer establishing module is further configured to enable the certain terminal to respond to the talk right authorization confirmation message to the source base station.
Wherein, for a certain base station, the terminal in the certain base station can be granted the talk right only when the terminal in the certain base station is located at the first of the talk right applying terminal list maintained by the certain base station.
A source base station terminal deleting module 610, configured to enable the source base station to update a locally maintained speech right application terminal list, delete an authorized terminal from the list, and send a speech right notification message;
further, the sending the talk burst notification message includes:
the source base station sends a speaking right notification message to the source terminal;
and the source base station triggers other base stations to send speaking right notification messages.
And the other base station terminal deleting module 710 is configured to update the talk right application terminal list maintained by the other base station after the other base station receives the talk right notification message triggered by the source base station, delete the authorized terminal from the list, and send the talk right notification message to the other terminals.
All base stations in the group calling area comprise the source base station and other base stations, and all terminals comprise the source terminal and other terminals; and the rest terminals are terminals except the deleted terminal in all the terminals.
The invention has the beneficial effects that:
in the speaking right application process of the fault weakening cluster communication system, the service can be expanded to a plurality of base stations through information interaction among the base stations; after receiving the speaking right request, the base station can determine whether to grant the speaking right and when to grant the speaking right through interaction with other base stations.
In the speaking right application process, the invention can ensure the synchronization of the respective maintained speaking right application terminal lists in the base stations, thereby ensuring that only one terminal obtains the speaking right at each moment when each base station grants the speaking right to the terminal in the group calling process.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (8)
1. A method for speaking right authorization in distributed fail-over trunking communication, the method comprising:
when the trunking communication system is in a distributed fault weakening state, a terminal sends a speaking right application to a base station, wherein the terminal is a source terminal, and the base station is a source base station;
after receiving a speaking right application sent by a source terminal, the source base station updates a speaking right application terminal list maintained by the source base station, inserts the speaking right application of the source terminal into the last of the list, and simultaneously forwards the speaking right application to other base stations in a group calling area;
after receiving the speaking right application forwarded by the source base station, the other base stations update the speaking right application terminal lists maintained by the other base stations;
all base stations in the group calling area grant speaking right to all terminals in sequence according to the priority sequence of the maintained speaking right application terminal list;
when a source base station determines that a right of speech is granted to a certain terminal in all terminals, the source base station and the certain terminal establish an uplink service special bearer and send a right of speech authorization message to the certain terminal;
the source base station updates a local maintained speaking right application terminal list, deletes the authorized terminal from the list and sends a speaking right notification message;
and after receiving the speaking right notification message triggered by the source base station, the other base stations update the speaking right application terminal list maintained by the other base stations, delete the authorized terminal from the list, and send the speaking right notification message to the other terminals.
2. The method of claim 1, wherein the method of speaking right authorization in distributed fail-soft cluster communication,
all base stations in the group calling area comprise the source base station and other base stations, and all terminals comprise the source terminal and other terminals; and the rest terminals are terminals except the deleted terminal in all the terminals.
3. The method of claim 1, wherein the method of speaking right authorization in distributed fail-soft cluster communication,
for a certain base station, a terminal in the certain base station can be granted the talk right only if the terminal in the certain base station is located at the first of the talk right applying terminal list maintained by the certain base station.
4. The method of claim 1, wherein the method of speaking right authorization in distributed fail-soft cluster communication,
when a source base station determines to grant a talk right to a certain terminal in all terminals, the source base station establishes an uplink service dedicated bearer with the certain terminal and sends a talk right authorization message to the certain terminal, and then,
and the certain terminal responds to the speaking right authorization confirmation message to the source base station.
5. Method for floor authorization in distributed fail-soft cluster communication according to any of claims 1-4,
the source base station updates a local maintained speaking right application terminal list, deletes the authorized terminal from the list and sends a speaking right notification message;
the sending of the talk burst notification message includes:
the source base station sends a speaking right notification message to the source terminal;
and the source base station triggers other base stations to send speaking right notification messages.
6. A system for floor authorization in distributed fail-over trunking communications, the system comprising:
the system comprises a speaking right application module, a speaking right application module and a speaking right processing module, wherein the speaking right application module is used for enabling a terminal to send speaking right application to a base station, the terminal is a source terminal, and the base station is a source base station;
the source base station list updating module is used for updating a speaking right application terminal list maintained by a source base station after the source base station receives a speaking right application sent by a source terminal, inserting the speaking right application of the source terminal into the last of the list, and simultaneously forwarding the speaking right application to other base stations in a group calling area;
the other base station list updating module is used for updating the speaking right application terminal list maintained by the other base stations after the other base stations receive the speaking right application forwarded by the source base station;
the speaking right granting module is used for enabling all base stations in the group calling area to grant speaking rights to all terminals in sequence according to the priority sequence of the maintained speaking right application terminal list;
the special bearer establishing module is used for establishing an uplink service special bearer with a certain terminal and sending a talk right authorization message to the certain terminal when a source base station determines that the talk right is granted to the certain terminal in all terminals;
a source base station terminal deleting module, configured to enable the source base station to update a locally maintained speech right application terminal list, delete an authorized terminal from the list, and send a speech right notification message;
and the other base station terminal deleting module is used for updating the speaking right application terminal list maintained by the other base station after the other base station receives the speaking right notification message triggered by the source base station, deleting the authorized terminal from the list and sending the speaking right notification message to the other terminals.
7. The system of claim 6, wherein the system further comprises a processor configured to receive the request from the distributed fail-safe cluster communication,
the dedicated bearer establishing module is further configured to enable the certain terminal to respond to the source base station with a talk right authorization confirmation message.
8. The system for floor authorization in distributed fail-soft cluster communication according to any of claims 6-7,
the sending of the talk right notification message in the source base station terminal deletion module includes:
the source base station sends a speaking right notification message to the source terminal;
and the source base station triggers other base stations to send speaking right notification messages.
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