CN106792599B - Single call establishment method and system in distributed fault weakening cluster communication - Google Patents
Single call establishment method and system in distributed fault weakening cluster communication Download PDFInfo
- Publication number
- CN106792599B CN106792599B CN201611103029.8A CN201611103029A CN106792599B CN 106792599 B CN106792599 B CN 106792599B CN 201611103029 A CN201611103029 A CN 201611103029A CN 106792599 B CN106792599 B CN 106792599B
- Authority
- CN
- China
- Prior art keywords
- base station
- called terminal
- single call
- source base
- terminal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/16—Communication-related supplementary services, e.g. call-transfer or call-hold
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/04—Arrangements for maintaining operational condition
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/27—Transitions between radio resource control [RRC] states
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a single call establishment method and a system in distributed fault weakening cluster communication, wherein the method comprises the steps that a calling terminal sends a single call establishment request to a base station; the source base station triggers other base stations to carry out cluster paging on the called terminal; other base stations feed back a paging result to a source base station, and the source base station sends a single call establishment request to a called terminal; the called terminal and the source base station establish a special bearer, and the source base station and the calling terminal establish a special bearer; the called terminal forwards the response message to the calling terminal through the source base station, the calling terminal establishes connection with the called terminal, and conversation is started; the invention also discloses a single call establishing system in the distributed fault weakening cluster communication; according to the invention, after the base station receives the single call establishment request of the calling terminal, if the called terminal is judged not to be in the base station, the single call service can be expanded to other base stations through interaction between the base station and other base stations, so that the service range of the single call service in a failure weakening state is effectively improved.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a single call establishment method and a single call establishment 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 fault weakening system is a communication system formed by base stations working in a fault 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 single call and the like need to be established, the base stations need to mutually interact to expand the service range of the single call to a plurality of base stations.
The problem of single call establishment under existing fault weakening is that only single base station implementation is considered, that is, single call service can only be established under a single base station, and if a calling party and a called party are not in the same base station, single call service cannot be established.
It follows that the existing single call setup procedure under fail-soft is not adapted to distributed fail-soft systems.
Disclosure of Invention
The technical problem to be solved by the invention is how to overcome the defect that the single call service between the base stations in the trunking communication distributed fault weakening system has limitation.
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 single call establishment method in distributed fault weakening cluster communication, which comprises the following steps:
a calling terminal sends a single call establishment request to a base station, wherein the base station is a source base station;
the source base station triggers other base stations to carry out cluster paging on the called terminal;
other base stations feed back a paging result to the source base station, and the source base station sends a single call establishment request to a called terminal;
the called terminal and the source base station establish a special bearer, and the source base station and the calling terminal establish a special bearer;
the called terminal forwards the response message to the calling terminal through the source base station;
the calling terminal and the called terminal establish connection and start conversation.
Further, the triggering, by the source base station, the other base stations to perform the trunking paging on the called terminal includes:
other base stations page the called terminal and wait for the called terminal to initiate RRC connection;
and the base station which receives the RRC request of the called terminal in other base stations establishes context information with the called terminal, and the base station which receives the RRC request of the called terminal in other base stations is a corresponding base station.
Further, the called terminal and the source base station establish a dedicated bearer, and the source base station and the calling terminal establish a dedicated bearer, which includes:
the source base station transmits a single call establishment request message to the corresponding base station according to the feedback results of other base stations, and the corresponding base station transmits the single call establishment request message to the called terminal;
after receiving the single call establishment request message, the called terminal feeds back a single call confirmation message to the source base station, and carries a media format;
and the source base station forwards the media format to the calling terminal.
Further, the called terminal forwards the response message to the calling terminal through the source base station, including:
the called terminal responds to the ringing message and the off-hook message in sequence and forwards the ringing message and the off-hook message to the calling terminal through the source base station;
after receiving the off-hook message, the calling terminal sends a connection establishment confirmation message to the called terminal.
Further, the source base station triggers other base stations to page the called terminal on the premise that the called terminal is not in the source base station.
The invention also provides a single call establishment system in distributed fail-soft cluster communication, the system comprises,
the single call request module is used for enabling the calling terminal to send a single call establishment request to a base station, wherein the base station is a source base station;
the source base station triggers other base stations to page the called terminal;
a base station feedback module, configured to enable other base stations to feed back a paging result to the source base station, where the source base station sends a single call establishment request to a called terminal;
the terminal bearing module is used for establishing a special bearing between the called terminal and the source base station, and establishing a special bearing between the source base station and the calling terminal;
the response forwarding module is used for enabling the called terminal to forward the response message to the calling terminal through the source base station;
and the terminal connection module is used for establishing connection between the calling terminal and the called terminal and starting conversation.
Further, the system further comprises:
the trunking paging module is used for enabling other base stations to perform trunking paging on the called terminal and waiting for the called terminal to initiate RRC connection;
and the context information module is used for enabling the base station which receives the RRC request of the called terminal in other base stations to establish context information with the called terminal, and the base station which receives the RRC request of the called terminal in other base stations is a corresponding base station.
Further, the system further comprises:
the single call forwarding module is used for enabling the source base station to forward a single call establishment request message to the corresponding base station according to the feedback results of other base stations, and the single call establishment request message is forwarded to the called terminal by the corresponding base station;
the single call confirmation module is used for feeding back a single call confirmation message to the source base station after the called terminal receives the single call establishment request message and carries a media format;
and the media format forwarding module is used for enabling the source base station to forward the media format to the calling terminal.
Further, the response forwarding module includes:
a sequential response unit, which is used for enabling the called terminal to respond the ringing message and the off-hook message in sequence and to forward the ringing message and the off-hook message to the calling terminal through the source base station;
and the connection confirmation unit is used for sending a connection establishment confirmation message to the called terminal after the calling terminal receives the off-hook message.
Further, the source base station triggers other base stations to page the called terminal on the premise that the called terminal is not in the source base station.
The invention has the beneficial effects that:
according to the invention, after the base station receives the single call establishment request of the calling terminal, if the called terminal is judged not to be in the base station, the single call service can be expanded to other base stations through information interaction between the base station and other base stations, so that the service range of the single call service in a failure weakening state is effectively improved.
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 single call setup method in the prior art;
FIG. 2 is a flowchart of a method for single call establishment in distributed fail-soft cluster communication according to an embodiment;
fig. 3 is a flowchart of a called terminal forwarding a response message to a calling terminal through a source base station according to an embodiment;
FIG. 4 is a flowchart of a method of establishing a single call in distributed fail-soft trunking communication according to the second embodiment;
fig. 5 is a signaling flowchart of a single call establishment method in distributed fail-soft trunking communication according to the second embodiment;
fig. 6 is a system block diagram of a single call establishment system in distributed fail-soft cluster communication according to the third 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 function of weakening the fault only considering the implementation in a single base station, where a signaling flow for single call establishment is shown in fig. 1.
In fig. 1, MO UE is a calling terminal, MT UE is a called terminal, ECM-IDLE is an IDLE state, and RRC connection is a process of allocating radio resources to UE by a network when the UE accesses the network;
specifically, step 1a is used for establishing RRC connection and context information between the idle terminal and the base station;
step 1 is used for sending a single call establishment request;
step 2-3, the base station is used for paging the called idle state terminal and establishing context information;
4-6, the base station is used for forwarding the call request to the called terminal and the corresponding call confirmation message from the called terminal to the calling terminal;
7-8, the base station is used for establishing a special bearer for the calling terminal and the called terminal;
9-10, transmitting a ringing message of the calling terminal and the called terminal;
11-14, the method is used for transmitting an off-hook message of a called terminal and a confirmation message of a calling terminal, so that the single call connection is successfully established, and a calling terminal and a called terminal can communicate with each other;
it can be seen from the establishment flow of the single call service in the prior art that when the base station receives the single call establishment request sent by the terminal, the base station only pages the called party, and if the called party is not in the base station, the single call service cannot be established.
The first embodiment is as follows:
as shown in fig. 2 to 3, the present embodiment provides a single call establishment method in distributed fault-weakened cluster communication, where the method includes:
s101, a calling terminal sends a single call establishment request to a base station, wherein the base station is a source base station;
s102, the source base station triggers other base stations to carry out cluster paging on the called terminal;
it should be noted that the precondition that the source base station triggers other base stations to page the called terminal is that the called terminal is not in the source base station.
Further, other base stations page the called terminal and wait for the called terminal to initiate RRC connection;
wherein, RRC is a short hand for Radio Resource Control (Radio Resource Control), and RRC connection is a process of allocating Radio resources for a UE (terminal) by a network when the UE accesses the network.
And the base station which receives the RRC request of the called terminal in other base stations establishes context information with the called terminal, and the base station which receives the RRC request of the called terminal in other base stations is a corresponding base station.
S103, other base stations feed back paging results to the source base station, and the source base station sends a single call establishment request to a called terminal;
further, the source base station forwards the single call establishment request message to the corresponding base station according to the feedback result of other base stations, and the corresponding base station forwards the single call establishment request message to the called terminal;
after receiving the single call establishment request message, the called terminal feeds back a single call confirmation message to the source base station, and carries a media format;
and the source base station forwards the media format to the calling terminal.
S104, establishing a special bearer between the called terminal and the source base station, and establishing a special bearer between the source base station and the calling 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.
S105, the called terminal forwards the response message to the calling terminal through the source base station;
wherein, S105 comprises:
s1051, the called terminal responds to the ringing message and the off-hook message in sequence and forwards the ringing message and the off-hook message to the calling terminal through the source base station;
and S1052, after receiving the off-hook message, the calling terminal sends a connection establishment confirmation to the called terminal.
And S106, establishing connection between the calling terminal and the called terminal and starting conversation.
Example two:
as shown in fig. 4-5, the present embodiment provides a single call establishment method in distributed fault-weakened cluster communication, where the method includes:
s201, a calling terminal sends a single call establishment request to a base station, wherein the base station is a source base station.
S202, the source base station triggers other base stations to carry out cluster paging on the called terminal;
the source base station triggers other base stations to page the called terminal on the premise that the called terminal is not in the source base station.
S203, other base stations page the called terminal and wait for the called terminal to initiate RRC connection;
and S204, the base station which receives the RRC request of the called terminal in other base stations establishes context information with the called terminal, and the base station which receives the RRC request of the called terminal in other base stations is a corresponding base station.
Other base stations feed back a paging result to the source base station, and the source base station sends a single call establishment request to a called terminal;
s205, the source base station forwards the single call establishment request message to the corresponding base station according to the feedback result of other base stations, and the corresponding base station forwards the single call establishment request message to the called terminal.
S206, after receiving the single call establishment request message, the called terminal feeds back a single call confirmation message to the source base station, and carries a media format;
and S207, the source base station forwards the media format to a calling terminal.
S208, the called terminal and the source base station establish a special bearer, and the source base station and the calling terminal establish a special bearer.
S209, the called terminal forwards the response message to the calling terminal through the source base station;
and S2010, establishing connection between the calling terminal and the called terminal and starting conversation.
Example three:
as shown in fig. 6, the present embodiment provides a single call setup system in distributed fail-soft cluster communication, the system comprising,
a single call request module 110, configured to enable a calling terminal to send a single call establishment request to a base station, where the base station is a source base station;
a base station triggering module 210, configured to enable the source base station to trigger other base stations to perform trunking paging on a called terminal;
it should be noted that the precondition that the source base station triggers other base stations to page the called terminal is that the called terminal is not in the source base station.
A trunking paging module 310, configured to enable other base stations to perform trunking paging on a called terminal and wait for the called terminal to initiate RRC connection;
the context information module 410 is configured to enable a base station, which receives the RRC request of the called terminal, of other base stations to establish context information with the called terminal, where the base station, which receives the RRC request of the called terminal, of the other base stations is a corresponding base station.
A base station feedback module 510, configured to enable other base stations to feed back a paging result to the source base station, where the source base station sends a single call establishment request to a called terminal;
a single call forwarding module 610, configured to enable the source base station to forward a single call establishment request message to the corresponding base station according to the feedback result of the other base stations, and forward the single call establishment request message to the called terminal by the corresponding base station;
a single call confirmation module 710, configured to feed back a single call confirmation message to the source base station after the called terminal receives the single call establishment request message, and carry a media format;
a media format forwarding module 810, configured to enable the source base station to forward the media format to a calling terminal;
a terminal bearer module 910, configured to enable a called terminal to establish a dedicated bearer with a source base station, and enable the source base station to establish a dedicated bearer with a calling terminal;
a corresponding forwarding module 1010, configured to enable the called terminal to forward the response message to the calling terminal through the source base station, where the forwarding module includes:
a sequential response unit 1011, configured to enable the called terminal to sequentially respond to the ringing message and the off-hook message, and forward the ringing message and the off-hook message to the calling terminal through the source base station;
a connection confirming unit 1012, configured to send a connection establishment confirmation to the called terminal after the calling terminal receives the off-hook message.
A terminal connection module 1110, configured to enable the calling terminal and the called terminal to establish a connection and start a call.
The invention has the beneficial effects that:
according to the invention, after the base station receives the single call establishment request of the calling terminal, if the called terminal is judged not to be in the base station, the single call service can be expanded to other base stations through the interaction between the base station and other base stations, so that the service range of the single call service in a failure weakening state is effectively improved.
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 (6)
1. A method for single call setup in distributed fail-over trunking communications, the method comprising:
a calling terminal sends a single call establishment request to a base station, wherein the base station is a source base station;
the source base station triggers other base stations to carry out cluster paging on a called terminal, wherein the called terminal is not in the source base station;
other base stations page the called terminal and wait for the called terminal to initiate RRC connection;
the base station which receives the RRC request of the called terminal in other base stations is a corresponding base station, and the corresponding base station and the called terminal establish context information;
other base stations feed back a paging result to the source base station, and the source base station sends a single call establishment request to a called terminal;
the called terminal and the source base station establish a special bearer, and the source base station and the calling terminal establish a special bearer;
the called terminal forwards the response message to the calling terminal through the source base station;
the calling terminal and the called terminal establish connection and start conversation.
2. The method for single call setup in distributed fail-soft cluster communication according to claim 1,
the called terminal and the source base station establish a special bearer, and the source base station and the calling terminal establish a special bearer, which comprises the following steps:
the source base station forwards the single call establishment request to a corresponding base station according to the paging feedback result of other base stations, and the corresponding base station further forwards the single call establishment request to the called terminal;
after receiving the single call establishment request, the called terminal feeds back a single call confirmation message to the source base station, and carries a media format;
and the source base station forwards the media format to the calling terminal.
3. The method for single call setup in distributed fail-soft cluster communication according to claim 2,
the called terminal forwards the response message to the calling terminal through the source base station, including:
the called terminal responds to the ringing message and the off-hook message in sequence and feeds back the ringing message and the off-hook message to the calling terminal through the source base station;
and after receiving the off-hook message responded by the called terminal, the calling terminal sends a connection establishment confirmation to the called terminal.
4. A system for single call setup in distributed fail-over trunking communications, the system comprising,
the single call request module is used for enabling the calling terminal to send a single call establishment request to a base station, wherein the base station is a source base station;
the base station triggering module is used for triggering other base stations to carry out trunking paging on a called terminal, wherein the called terminal is not in the source base station;
the trunking paging module is used for enabling other base stations to perform trunking paging on the called terminal and waiting for the called terminal to initiate RRC connection;
the context information module is used for enabling the base station which receives the RRC request of the called terminal in other base stations to establish context information with the called terminal, and the base station which receives the RRC request of the called terminal in other base stations is a corresponding base station;
a base station feedback module, configured to enable other base stations to feed back a paging result to the source base station, where the source base station sends a single call establishment request to a called terminal;
the terminal bearing module is used for establishing a special bearing between the called terminal and the source base station, and establishing a special bearing between the source base station and the calling terminal;
the response forwarding module is used for enabling the called terminal to forward the response message to the calling terminal through the source base station;
and the terminal connection module is used for establishing connection between the calling terminal and the called terminal and starting conversation.
5. The system for single call setup in distributed fail-soft cluster communication according to claim 4,
the system further comprises:
the single call forwarding module is used for enabling the source base station to forward a single call establishment request message to the corresponding base station according to the feedback results of other base stations, and the single call establishment request message is forwarded to the called terminal by the corresponding base station;
the single call confirmation module is used for feeding back a single call confirmation message to the source base station after the called terminal receives the single call establishment request message and carries a media format;
and the media format forwarding module is used for enabling the source base station to forward the media format to the calling terminal.
6. The system for single call setup in distributed fail-soft cluster communication according to claim 5,
the response forwarding module includes:
a sequential response unit, which is used for enabling the called terminal to respond the ringing message and the off-hook message in sequence and to forward the ringing message and the off-hook message to the calling terminal through the source base station;
and the connection confirmation unit is used for sending connection establishment confirmation to the called terminal after the calling terminal receives the off-hook message.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611103029.8A CN106792599B (en) | 2016-12-05 | 2016-12-05 | Single call establishment method and system in distributed fault weakening cluster communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611103029.8A CN106792599B (en) | 2016-12-05 | 2016-12-05 | Single call establishment method and system in distributed fault weakening cluster communication |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106792599A CN106792599A (en) | 2017-05-31 |
| CN106792599B true CN106792599B (en) | 2020-12-18 |
Family
ID=58883887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611103029.8A Active CN106792599B (en) | 2016-12-05 | 2016-12-05 | Single call establishment method and system in distributed fault weakening cluster communication |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106792599B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111918417B (en) * | 2019-05-10 | 2022-09-27 | 大唐移动通信设备有限公司 | Voice call connection method and device |
| CN112203239B (en) * | 2020-10-29 | 2022-03-15 | 北京长焜科技有限公司 | Pre-established bearing management method in B-Trunc system |
| CN115941028B (en) * | 2022-12-01 | 2024-01-19 | 中国人民解放军61096部队 | Ground station fault positioning method and device and electronic equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101212723A (en) * | 2006-12-27 | 2008-07-02 | 大唐移动通信设备有限公司 | Cluster network system and failure attenuation method on the basis of the network system |
| CN101778413A (en) * | 2009-12-30 | 2010-07-14 | 华为技术有限公司 | Communication method, base station and communication system |
| CN102378125A (en) * | 2010-08-05 | 2012-03-14 | 中兴通讯股份有限公司 | Trunking communication system and cooperation processing fault weakening method |
| CN102821411A (en) * | 2011-06-08 | 2012-12-12 | 中兴通讯股份有限公司 | Method, base station and system for achieving fail soft in broadband clustering system |
| CN105898787A (en) * | 2016-06-21 | 2016-08-24 | 海能达通信股份有限公司 | Method for recovering communication of base station in failure weakening condition, base station, device and communication device |
-
2016
- 2016-12-05 CN CN201611103029.8A patent/CN106792599B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101212723A (en) * | 2006-12-27 | 2008-07-02 | 大唐移动通信设备有限公司 | Cluster network system and failure attenuation method on the basis of the network system |
| CN101778413A (en) * | 2009-12-30 | 2010-07-14 | 华为技术有限公司 | Communication method, base station and communication system |
| CN102378125A (en) * | 2010-08-05 | 2012-03-14 | 中兴通讯股份有限公司 | Trunking communication system and cooperation processing fault weakening method |
| CN102821411A (en) * | 2011-06-08 | 2012-12-12 | 中兴通讯股份有限公司 | Method, base station and system for achieving fail soft in broadband clustering system |
| CN105898787A (en) * | 2016-06-21 | 2016-08-24 | 海能达通信股份有限公司 | Method for recovering communication of base station in failure weakening condition, base station, device and communication device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106792599A (en) | 2017-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101400153B (en) | Method for direct communication by user equipment through HNB access system | |
| CN102348222B (en) | Fault weakening method and base station based on digital cluster system | |
| JP6093037B2 (en) | Method, system, base station, and cluster EPC for establishing group call context | |
| EP1755353A1 (en) | Method for multicasting short message | |
| US9794952B2 (en) | Implementation method for transmission-priority seizing of LTE-based broadband cluster system | |
| JP5911586B2 (en) | Method and system for MCE controlling cluster session establishment | |
| CN104254054A (en) | Trunking communication method, device and system | |
| CN106792599B (en) | Single call establishment method and system in distributed fault weakening cluster communication | |
| WO2012058979A1 (en) | Method and system for achieving group call under single station mode | |
| JP2011529214A (en) | Earthquake and tsunami warning system and its main notification message transfer method | |
| EP1734772B1 (en) | Method of uplink preemption by later entry user equipment in trunking group with established group call | |
| CN105376768A (en) | Pool disaster recovery method and system for mobility management entity | |
| CN109802982B (en) | Dual-connection implementation method, device and system | |
| CN101925037A (en) | Method and base station for establishing call | |
| EP3200485A1 (en) | All-group calling method, system, related device and computer storage medium | |
| CN104348814A (en) | Implementation method and system of forced insertion/forced removal service and application server | |
| WO2007098640A1 (en) | Method for assigning the carrier frequency in a trunked system | |
| WO2005122599A1 (en) | A method of digital trunked communication system fast call setup | |
| CN109788445B (en) | Group call service establishing method, base station, eMMC and system | |
| WO2008011807A1 (en) | Method for releasing free channel resource and group call system | |
| CN101237626A (en) | Processing method and processing system for multiple crossed services | |
| JPWO2005006800A1 (en) | Paging control method, paging control apparatus, and radio access network | |
| CN106792847B (en) | Speaking right authorization method and system in distributed fault weakening cluster communication | |
| CN115866801A (en) | Method and system for establishing end-to-end communication | |
| WO2006045244A1 (en) | Method and device for implementing secret call service |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |