CN106332282B - A kind of implementation method for the group call that rank groups are off the net - Google Patents
A kind of implementation method for the group call that rank groups are off the net Download PDFInfo
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- CN106332282B CN106332282B CN201510388133.5A CN201510388133A CN106332282B CN 106332282 B CN106332282 B CN 106332282B CN 201510388133 A CN201510388133 A CN 201510388133A CN 106332282 B CN106332282 B CN 106332282B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/30—Resource management for broadcast services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
- H04W4/08—User group management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/08—Trunked mobile radio systems
Abstract
This application discloses a kind of implementation method of group call that rank groups are off the net, in the classification networking, the cluster core net in each area, which had both been responsible for this area trunked call, dispatches business, is also responsible for and upper core net system carries out intercommunication；Higher level's cluster core net, which had both been responsible for this area trunked call, dispatches business, the trunked call service control being also responsible between junior's core net and junior's core net.Terminal initiation group exhales foundation to request, its core net belonged to exhales foundation to request to a group main control server transmission group, group call uplink intermediate node only receives after the group call uplink that group main control server returns is successfully established response, just exhales downlink to establish request to the same level or junior's core net transmission group.Rank groups group call off the net may be implemented in application scheme.
Description
Technical field
This application involves mobile communication technology fields, in particular to trunking communicating technology more particularly to a kind of classification networking
Under group call implementation method.
Background technique
Trunked communication system is developed, is applied towards specific industry to meet the needs of industry user's command scheduling
Private wireless communication system.A large amount of wireless users share a small amount of wireless channel in system, are applied based on command scheduling business,
It is a kind of multipurpose, the high-effect wireless communication system using frequency resource.Trunked communication system in a government office, public peace
Entirely, the fields such as emergency communication, electric power, civil aviaton, petrochemical industry and army have a wide range of applications market.
Broadband multimedia cluster system based on TD-LTE be using fourth generation mobile communication technology TD-LTE as core technology,
By in the high-speed of TD-LTE, big bandwidth and Digital Trunking Technologies resource-sharing, fast call establishment, command scheduling the features such as
What is merged integrates the new generation broadband digital multimedia cluster system of voice, data, video.
In the practical process of construction of public safety network, often requiring that can be according to relationship between superior and subordinate building network system.
On the one hand network can guarantee that the core net of different levels network all passes through upper core net and exhaled according to hierarchical relationship networking
Cry exchange and control, whole system it is highly-safe, controllability is good；On the other hand, different regions can gradually, it is hierarchical
Build entire cluster network.For example construction covers the cluster communication network of a certain province, can be divided into provincial, city-level, three at county level
Hierarchical network.City-level network is first built, gradually builds up later, improve County net, finally realizes cities and counties' net in the more areas of the whole province
System is dispatched in the unified command of network networking intercommunication.Colony dispatching service can not only carry out in the same level, can also be across grade and other
The group system of level carries out intercommunication.A certain area can build the public security broadband radio multi-media cluster network of the same level in advance,
Internal trunked call exchange control can be carried out independently.It is deployed in a certain area compared to by the Call- Control1 concentration in more areas,
Reliability is higher.In conclusion classification networking has urgent need in practical networking.
Cluster multi call business is most common call business in trunked communication system command scheduling business.I.e. multiple set of terminal
At a group, all group memberships share a down channel after group exhales foundation.Up channel obtains the group of right of speech by one
Member occupies, other group memberships can receive the voice and/or video of right of speech side's terminal.Other group memberships can also apply simultaneously
Right of speech.In more regional group system network interconnections, the terminal user as group membership can be distributed in different regions, and ownership is not
With area cluster system management.When group exhales initiation, the group system that entire group-calling service is special by one, specified serves as the group
Call business control centre point (i.e. group main control server) be uniformly coordinated group exhale foundation, group to exhale middle right of speech is assigned, group is exhaled
The groups such as release exhale control process.Each group can specify a unique cluster core net to serve as a group main control server.
The network architecture of existing broadband or narrowband group system still without definition classification networking.China narrowband number at present
Word cluster be mainly European Communication Standard association work out TErrestrial TRunked Radio (Terrestrial Trunked Radio,
TETRA) and the Chinese Ministry of Public Security push pro digital cluster ((Professional Digital Trunking, PDT) standard,
Without the network architecture of definition classification networking." the broadband based on LTE technology of Chinese industrial and informationization portion publication in 2013
Cluster communication (B-TrunC) system general technical requires (first stage) " network interconnection frameworks of the not yet more regional networkings of definition.
In 2014, Chinese Ministry of Public Security's publication " public security broadband radio multi-media group system general technical specification " was although define roaming
Framework, but also without the network architecture of definition classification networking.Public security broadband radio multi-media cluster is proposed in this specification
The network system architecture of system, shown in system architecture Fig. 1, the network system is by terminal, base station, cluster core net and cluster tune
Spend application platform composition, wherein terminal includes but is not limited to multimode terminal, single-mode terminal, data terminal and car-mounted terminal.Base station
It is the group system base station based on TD-LTE including police Digital Clustering base station (PDT Station) and T-eNB, T-eNB.Collection
Network element in group's core net (TC) includes: interconnection gateway (IGW), clustered control functional module (TCF), cluster media function
Module (TMF), the home subscriber server (eHSS) of evolution, the core network gateway (eXGW) of evolution, the mobile management of evolution are real
Body (eMME).Colony dispatching application platform includes: dispatching desk (DC), video and audio recording server (ReS), secure cryptographic service device
(SeS), application server (ApS).
Each interface implication is as follows in Fig. 1:
PU --- the interface between terminal and base station, this interface are open interfaces；
Interface between PS --- base station and cluster core net, this interface are open interfaces；
PD --- the interface between cluster core net and colony dispatching application platform, this interface are open interfaces；
PI --- the interface between cluster core net and cluster core net, this interface are open interfaces；
SGi --- the interface between cluster core net and data service network, this interface should meet wanting for 3GPP TS 23401
It asks.
PG --- the interface between cluster core net and Interworking GateWay, this interface are temporarily undefined.
Interface between cluster core net logical ne is as shown in Figure 2, wherein
Th --- the interface between TCF and eHSS；
Mh --- the interface between eMME and eHSS；
Tm --- the interface between TCF and eMME；
Tt --- the interface between TCF and TMF；
Tx --- the interface between TMF and eXGW；
Mx --- the interface between eMME and eXGW.
Note: contained Network Element Function and protocol stack of the interface definition are detailed in that " public security broadband wireless is more in colony dispatching application platform
Media group system general technical specification ".
In addition, group membership's ownership is in different regions core net management, group need to be known by certain mode by organizing main control server
Which core net management member belongs to, to page group membership when group exhales initiation.But this mode is in existed system
It is mostly to be realized by static configuration mode in systems.Once network structure changes, it is necessary to modify the configuration of associated static.
Moreover, the cluster core net of rank groups different regions off the net is connected to the network of upper and lower hierarchical relationship.It is different
The intercommunication of level core network service all has to pass through upper core net and swaps, controls.How to carry out group at this time and exhale not yet may be used
Capable implementation method.In addition, when the cluster core net transmission group where group main control server to different group memberships exhales foundation to request
Afterwards, the communication link by foundation to multiple target cluster core nets is to transmit user face media data.This leads to a group master control service
Device becomes the bottleneck that group exhales performance.
Summary of the invention
This application provides a kind of implementation methods of group call that rank groups are off the net, and rank groups group off the net may be implemented
Group calling.
A kind of implementation method of rank groups provided by the embodiments of the present application group call off the net, in the classification networking,
The cluster core net in each area, which had both been responsible for this area trunked call, dispatches business, is also responsible for and the progress of upper core net system is mutual
It is logical.Higher level's cluster core net, which had both been responsible for this area trunked call, dispatches business, is also responsible for and junior's core net and junior's core
Trunked call service control between net；This method comprises:
A, group exhales calling terminal transmission group to exhale foundation request to its affiliated n-th grade of cluster core net；
B, n-th grade of cluster core net receive group exhale foundation request after, judge whether itself is a group main control server, if
It is to execute step D；Otherwise, step C is executed；
C, n-th grade of cluster core net transmission group exhales foundation request to (n+1)th grade of cluster core net；N=n+1 is enabled, step is returned
Rapid B；Wherein, (n+1)th grade of cluster core net is located at the upper level of n-th grade of cluster core net；
D, group main control server is exhaled according to the information of pre-generated group membership's information and signalling route in addition to group
(n-1)th grade of cluster core net transmission group that each group membership except row intermediate node directly or indirectly belongs to exhales downlink foundation to ask
It asks；Receiving group exhales downlink to establish each cluster core net requested as transit node, exhales downlink to establish request group and sends
The group membership directly managed to it, or it is sent to the next stage cluster core net of directly or indirectly management group membership；
E, receiving the cluster core net return group that group exhales the group membership of downlink foundation request directly to belong to it exhales downlink to build
Vertical success response；Cluster core net that group exhales downlink to be successfully established response is received as transit node, exhales downlink to be created as group
Function response uplink is sent to a group main control server；
F, group main control server sends group call uplink to group call uplink intermediate node and is successfully established response, among group call uplink
Node exhales downlink to establish request to the same level or junior's cluster core net transmission group；Receiving group exhales downlink to establish each group requested
It exhales uplink intermediate node as transit node, exhales downlink to establish request group and be sent to its group membership directly managed, Huo Zhefa
It send to the next stage cluster core net of direct or indirect management group membership；
G, receiving the cluster core net return group that group exhales the group membership of downlink foundation request directly to belong to it exhales downlink to build
Vertical success response；Cluster core net that group exhales downlink to be successfully established response is received as transit node, exhales downlink to be created as group
Function response uplink is sent to group call uplink intermediate node；
H, group call uplink intermediate node Xiang Zuhu calling terminal transmission group, which is exhaled, is successfully established response.
Preferably, this method further comprises: user face media of Cong Zuhu calling party's core net to group main control server
In data upstream transmission link, each level server on the way be responsible for for user face media data being forwarded directly to other groups exhale by
Cluster core net where being member, without group main control server forwarding.
Preferably, it is characterized in that, organizing main control server in synchronization and each level server only safeguarding one on the way
Group exhales dialogue.
Preferably, this method further comprises: user face media data forwards step by step between level；Among group call uplink
Node is responsible for the group membership for exhaling group user face media data to be sent to its management of ownership, the composition of junior's cluster core net management
Member and higher level's cluster core net；Group exhales downlink intermediate node that user face media data is forwarded to the composition for belonging to its management
Member, junior's cluster core net management group membership.
As can be seen from the above technical solutions, rank groups terminal initiation group off the net is exhaled, and group call uplink intermediate node TCF only has
It receives after the group call uplink that group main control server returns is successfully established response, just exhales downlink to the same level or junior's core net transmission group
Request is established, ensure that group main control server is unique control point of group-calling service control；Relevant all level cores are exhaled with group
Heart net is after receiving group and exhaling and be successfully established response, the composition of generation when carrying out enrollment process to group main control server according to group membership
Member's signalling route information exhales called member's initiation group that foundation is exhaled to request to other groups.Group main control server is avoided again for group
It exhales foundation request to issue each level again and sees core net node, reduce group and exhale setup delay.
According to the preferred embodiment of the application, organizes master control TCF and other grade of TCF only safeguards that a group exhales dialogue.Realize letter
Single, processing is easy；
According to the preferred embodiment of the application, user face media data forwards step by step between level.Among group call uplink
Node TCF be responsible for by user face media data forward be sent to ownership its management group membership, junior TCF management group membership to
And higher level TCF.Group exhales downlink intermediate node TCF that media data forwarding in user face is sent to the group membership of its management of ownership, junior
The group membership of TCF management.Aforesaid way, which avoids, individually individually to be issued to all level core nets from group main control server and is drawn
The performance bottleneck problem risen；Exhale calling party's core net to the user face media data uplink link of group main control server from group
In, each level server on the way is responsible for core net where user face media data to be forwarded directly to other group memberships, reduces
To a group performance requirement for main control server user face media data forwarding.
Detailed description of the invention
Fig. 1 is public security broadband radio multi-media group system architecture diagram；
Fig. 2 is cluster core net logical ne interface diagram；
Fig. 3 is rank groups non-roaming cities and counties' two-stage group-network construction figure off the net；
Fig. 4 is 3 grades of network model schematic diagram being made of multiple cluster core nets；
Fig. 5 is off the net group of rank groups provided by the embodiments of the present application and exhales processing flow schematic diagram.
Specific embodiment
A kind of implementation method of rank groups provided by the present application group call off the net, fundamental design idea includes: terminal
Initiation group exhales foundation to request, and the core net of ownership exhales foundation to request to a group main control server transmission group.Group exhale foundation whether at
The power to make decision of function is at a group main control server (group master control TCF).Group call uplink intermediate node (lead to group by Cong Zuhu calling party's core net
In the user face media data uplink link for controlling server, each TCF on the way, such as TCF1 and TCF2 in Fig. 4) only
Have and receive after the group call uplink that group main control server returns is successfully established response, is just exhaled down to the same level or junior's core net transmission group
Row establishes request.Group main control server can also have the group membership directly managed.
Exhale relevant all level core nets after receiving group and exhaling and be successfully established response with group, according to organizing enrollment process before
Group membership's signalling route information of generation exhales called member's initiation group that foundation is exhaled to request to other groups.Group master control TCF is direct with it
Only safeguard that a group exhales dialogue between next level TCF.User face data forwards step by step between level, and intermediate node TCF is negative
Duty by group exhale downlink user face media data be sent to ownership its management group membership, junior TCF management group membership use and
Higher level TCF.Exhale calling party's core net into the user face media data uplink link of group main control server from group, on the way
Each level server is responsible for for user face media data being forwarded directly to other groups and exhales core net where called member, without group master
Control server forwarding.
To keep the technical principle, feature and technical effect of technical scheme clearer, below in conjunction with specific reality
Example is applied technical scheme is described in detail.
The core for being classified networking is that the cluster core net of different regions is connected to the network of upper and lower hierarchical relationship, mainly
It embodies are as follows:
The cluster core net in each area, which had both been responsible for this area trunked call, dispatches business, is also responsible for and upper core net system
System carries out intercommunication.
Higher level's cluster core net, which had both been responsible for this area trunked call, dispatches business, is also responsible for and junior's core net and junior
Trunked call service control between core net.
When being classified networking, more area cluster core nets pass through " public security broadband radio multi-media group system general technical rule
Model " in PI3 interface inter-link intercommunication.PI3 interface is the interface between different TCF between difference TMF.Fig. 3 is shown substantially
Cities and counties' two-stage networking the network architecture.The city Tu3Zhong C includes A, the county B Liang Ge.Entire trunked communication system is in the city C, the county A and the county B
There are 3 sets of TD-LTE broadband multimedia cluster systems respectively.Each network includes independent cluster core net and application platform.Fig. 3
In the network in each area base station and terminal part is omitted.Each network system manage independently oneself directly under user and group
Subscription data, the basic colony dispatching service across core net are completed by PI3 interface between core net.The city C core net is in logic
Serve as father node, the core net in the county A and the county B serves as child node.The relationship of father and son's node by respective core net static state match
The mode of setting is arranged.I.e. child node core net configures unique father node core net and provides the IP and port numbers of service.Father node core
Net configures the IP and port numbers of all child node Core Network Services.The county A, the county B are the Trunked Radio Systems of sane level, between each other
Colony dispatching service cannot directly be carried out.The Trunked Radio System in the city C is separately connected the core in the county A and the county B by PI3 interface
Net, the scheduling business being not only responsible between the colony terminal that city is directly under the jurisdiction of, is also responsible for the collection between the county A and B or between the city C and the county A, B
Group terminal dispatches business.
Group membership registers technical purpose to be achieved to group main control server
Group main control server dynamic knows group membership in the core net management of which level；
Group main control server dynamic knows that call signaling is sent to the routing iinformation in group membership place core net path；
From all cluster core nets for passing through on the way to group main control server of cluster core net of management group membership mistake herein
The corresponding group membership's information of dynamic generation and the information of signalling route in journey.
Fig. 4 shows 3 grades of network model being made of multiple cluster core nets (TCF).Colony terminal is returned respectively
Belong to TCF1~TCF4 management.TCF1~TCF4 and group master control TCF5 is rank groups wet end administration.TCF1, TCF6 are the sons of TCF2
Node, TCF4 are the child nodes of TCF3, and TCF2, TCF3 are the child nodes of TCF5.Group number is that the group membership of the group of GDN1 includes
UE1-UE5, wherein UE1, UE5 belong to TCF1 management, and UE2 belongs to TCF2 management, and UE3, UE4 belong to TCF4 management, UE5 ownership
TCF6 management.TCF5 serves as the group main control server of group.
After UE1 is registered to TCF1, the group main control server of TCF1 superior sends SIP (MESSAGE) register request message.
The enrollment process of 2~UE5 of other terminal UEs omits description.Group membership registers and goes the specific implementation process of registration referring to the application
Another of people application " a method of group membership registers to a group main control server when classification networking ", it is no longer superfluous herein
It states.
TCF1 is the ownership TCF1 of group call initiator UE1.Group is exhaled foundation request to be sent to other groups by group main control server
Member.The group for being dealt into group main control server exhales foundation request (group call uplink establishes request) to be identified with thick line, is sent to other compositions
The setup requests (group exhales downlink to establish request) of member are identified with filament.
Fig. 5 shows off the net group of rank groups provided by the embodiments of the present application and exhales process flow, includes the following steps:
Step 501: group exhales calling terminal UE1 hair group call uplink to establish request to TCF1.
Step 502:TCF1 judges whether itself is a group main control server, judging result be not to establish group call uplink
Superior TCF2 is requested to send.TCF2 returns to SIP (100 Trying) response.
After step 503:TCF2 receives group call uplink foundation request, superior TCF5 sends INVITE request.TCF5 is returned
SIP (100Trying) response.
Step 504: after group master control TCF5 receives group call uplink foundation request, exhaling downlink to TCF3 hair SIP (INVITE) group
Establish request.TCF3 returns to SIP (100Trying) response.
Step 505:TCF3 sends INVITE to TCF4, carries out group and downlink is exhaled to establish request.TCF4 returns to SIP
(100Trying) response.
Group is exhaled downlink to establish the terminal that request is sent to its ownership management by step 506:TCF4, since this process is in network element
Realize defined, omission description herein in portion.TCF4 returns to SIP (200OK) response to TCF3 later.TCF3 sends SIP to TCF4
(ACK)。
Step 507: due to there is no group membership under TCF3, directly by SIP (200 OK) return group master control TCF5；
Step 508: group master control TCF5 is received after group exhales downlink to be successfully established response, Xiang Zuhu calling party's signalling route node
TCF2 returns to group call uplink and is successfully established responds SIP (200OK).TCF5 sends SIP (ACK) to TCF3.
Step 509:TCF2 is received after group call uplink is successfully established response, sends SIP (ACK) message to TCF5.While to
Group membership's initiation group exhales foundation to request.Since this process is that network element internal realizes defined, description is omitted herein.
Step 510: since UE6 is managed at TCF6, what TCF2 group main control server enrollment process before generated is exhaled
It is signalling route information, exhales downlink to establish request SIP (INVITE) to TCF6 initiation group.Group is exhaled foundation request to be sent to it by TCF6
Belong to the terminal of management, after TCF6 returns to SIP (200OK) to TCF2, TCF2 sends SIP (ACK) message to TCF6.
Step 511:TCF2 returns to group call uplink to TCF1 and is successfully established responds SIP (200OK).TCF1 is sent to TCF2
SIP(ACK)。
Step 512:TCF1 is exhaled to UE1 transmission group and is successfully established response, and UE1 is exhaled to TCF1 return group and is successfully established confirmation.
The embodiment of the present application provides off the net group of rank groups and exhales user face media data treatment process as follows:
User face data forwards step by step between level, and group call uplink intermediate node TCF is responsible for exhaling group into downlink user face
Media data is sent to the group membership of its management of ownership, the group membership of junior TCF management uses and higher level TCF；Caller is exhaled from group
Square core net into the user face media data uplink link of group main control server, each level server on the way be responsible for by
User face media data is forwarded directly to other groups and exhales core net where called member, without group main control server forwarding.Group is exhaled
Downlink intermediate node (be downlink path from the path that group main control server issues message, in the downlink path by way of each TCF
Downlink intermediate node is exhaled for group) media data forwarding in user face is sent to the group of the group membership of its management of ownership, junior TCF management
Member.
This application provides rank groups groups off the net to exhale implementation method, can achieve following technical effect:
Rank groups terminal initiation group off the net is exhaled, and group call uplink intermediate node TCF only receives what group main control server returned
After group call uplink is successfully established response, just exhales downlink to establish request to the same level or junior's core net transmission group, ensure that a group master control
Server is unique control point of group-calling service control；
Exhale relevant all level core nets after receiving group and exhaling and be successfully established response with group, according to group membership to a group master control
Server carries out group membership's signalling route information of generation when enrollment process, exhales called member's initiation group that foundation is exhaled to ask to other groups
It asks.Avoid group main control server exhales foundation request to issue each level again and see core net node group again, reduces group and exhales
Setup delay；
Group master control TCF and other grade of TCF only safeguard that a group exhales dialogue.Realize that simply, processing is easy；
User face media data forwards step by step between level.Group call uplink intermediate node TCF is responsible for user face media
Data forwarding is sent to the group membership of its management of ownership, the group membership of junior TCF management uses and higher level TCF.Group is exhaled among downlink
Media data forwarding in user face is sent to the group membership of the group membership of its management of ownership, junior TCF management by node TCF.Above-mentioned side
Formula avoid from group main control server individually to all level core nets individually issue caused by performance bottleneck problem；
Exhale calling party's core net into the user face media data uplink link of group main control server from group, on the way
Each level server is responsible for core net where user face media data to be forwarded directly to other group memberships, reduces to a group master control
The performance requirement of server user face media data forwarding.
The foregoing is merely the preferred embodiments of the application, not to limit the protection scope of the application, it is all
Within the spirit and principle of technical scheme, any modification, equivalent substitution, improvement and etc. done should be included in this Shen
Within the scope of please protecting.
Claims (4)
1. a kind of implementation method for the group call that rank groups are off the net, in the classification networking, the cluster core net in each area
Both this area trunked call it had been responsible for and has dispatched business, and had also been responsible for and upper core net system carries out intercommunication；Higher level's cluster core net was both
It is responsible for this area trunked call and dispatches business, the trunked call service being also responsible between junior's core net and junior's core net
Control；It is characterized in that, this method comprises:
A, group exhales calling terminal transmission group to exhale foundation request to its affiliated n-th grade of cluster core net；
B, n-th grade of cluster core net receive group exhale foundation request after, judge whether itself is a group main control server, if so, holding
Row step D；Otherwise, step C is executed；
C, n-th grade of cluster core net transmission group exhales foundation request to (n+1)th grade of cluster core net；Enable n=n+1, return step B；
Wherein, (n+1)th grade of cluster core net is located at the upper level of n-th grade of cluster core net；
D, group main control server is according to the group membership's information pre-generated and the information of signalling route, in addition to group call uplink
(n-1)th grade of cluster core net transmission group that each group membership except intermediate node directly or indirectly belongs to exhales downlink to establish request；
Receiving group exhales downlink to establish each cluster core net requested as transit node, exhales downlink to establish request group and is sent to it
The group membership directly managed, or it is sent to the next stage cluster core net of directly or indirectly management group membership；Described group is exhaled
Row intermediate node is to exhale calling party's core net into the user face media data uplink link of group main control server from group, edge
Each clustered control functional module TCF on way；
E, receiving the cluster core net return group that group exhales the group membership of downlink foundation request directly to belong to it exhales downlink to be created as
Function response；Cluster core net that group exhales downlink to be successfully established response is received as transit node, exhales downlink to be successfully established sound group
Uplink is answered to be sent to a group main control server；
F, group main control server sends group call uplink to group call uplink intermediate node and is successfully established response, group call uplink intermediate node
Downlink is exhaled to establish request to the same level or junior's cluster core net transmission group；Receiving group exhales each group of downlink foundation request to exhale
Group is exhaled downlink to establish request and is sent to its group membership directly managed by row intermediate node as transit node, or is sent to
The directly or indirectly next stage cluster core net of management group membership；
G, receiving the cluster core net return group that group exhales the group membership of downlink foundation request directly to belong to it exhales downlink to be created as
Function response；Cluster core net that group exhales downlink to be successfully established response is received as transit node, exhales downlink to be successfully established sound group
Uplink is answered to be sent to group call uplink intermediate node；
H, group call uplink intermediate node Xiang Zuhu calling terminal transmission group, which is exhaled, is successfully established response.
2. the method according to claim 1, wherein this method further comprises: Cong Zuhu calling party's core net
Into the user face media data uplink link of group main control server, each level server on the way is responsible for user face matchmaker
Volume data is forwarded directly to other groups and exhales cluster core net where called member, without group main control server forwarding.
3. according to the method described in claim 2, it is characterized in that, organizing main control server and on the way each level in synchronization
Server only safeguards that a group exhales dialogue.
4. the method according to claim 1, wherein this method further comprises: user face media data is in layer
It is forwarded step by step between grade；Group call uplink intermediate node is responsible for the composition for exhaling group user face media data to be sent to its management of ownership
Member, the group membership of junior's cluster core net management and higher level's cluster core net；Group exhales downlink intermediate node by user face media
Data forwarding to belong to its management group membership, junior's cluster core net management group membership；Described group is exhaled downlink intermediate node
For from the path that group main control server issues message by way of each TCF.
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| CN108696828B (en) * | 2017-02-13 | 2021-08-20 | 普天信息技术有限公司 | Roaming processing method for wireless dispatching desk |
| CN113099465B (en) * | 2019-12-23 | 2023-02-24 | 成都鼎桥通信技术有限公司 | B-Trunc cluster networking architecture |
| 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 |
| CN113316096B (en) * | 2021-05-31 | 2022-04-19 | 武汉虹信科技发展有限责任公司 | Method and system for forwarding video to group in broadband cluster |
| CN113645359B (en) * | 2021-08-12 | 2023-09-19 | 迈普通信技术股份有限公司 | Call backup and calling method, device, terminal, server and storage medium |
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