CN106937347B - Group call switching method and system of cross-cluster core network - Google Patents
Group call switching method and system of cross-cluster core network Download PDFInfo
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- CN106937347B CN106937347B CN201511019387.6A CN201511019387A CN106937347B CN 106937347 B CN106937347 B CN 106937347B CN 201511019387 A CN201511019387 A CN 201511019387A CN 106937347 B CN106937347 B CN 106937347B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
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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
- H04W76/00—Connection management
- H04W76/40—Connection management for selective distribution or broadcast
- H04W76/45—Connection management for selective distribution or broadcast for Push-to-Talk [PTT] or Push-to-Talk over cellular [PoC] services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
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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
- H04W4/10—Push-to-Talk [PTT] or Push-On-Call services
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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
The invention provides kinds of group calling switching method and system of cross cluster core network, the invention produces the prepares the switching request according to the group calling information that the terminal station uploads, prepare the switching request to produce and change the switching request and send to the core network of the goal cluster by the core network of the source cluster according to , the core network of the goal cluster sends the switching information to the main cluster core network of group control according to changing the switching request, the main cluster core network of group control carries on group calling and expands the group calling to the core network of the goal cluster, the core network of the goal cluster sends and changes the switching response to the core network of the source cluster after expanding and finishing, the core network of the source cluster produces and sends the reconfiguration message to the correspondent terminal station according to changing the switching response, the terminal station carries on the resource allocation according to the reconfiguration message finally, and insert the goal base station.
Description
Technical Field
The invention belongs to the technical field of mobile communication, and particularly relates to group call switching methods and systems of a cross-cluster core network.
Background
The multimedia trunking system based on the time-sharing long-term evolution TD-LTE private network broadband follows the broadband trunking communication (B-trunC) system series standard based on the LTE technology of the CCSA (China communication standards Association). At present, the standardization of terminal related interfaces is completed by a broadband trunking communication (B-TrunC) system series standard based on the LTE technology, but only a local single system network architecture is defined, and a multi-trunking core network interworking or roaming architecture is not defined. Therefore, a network cannot be built by using the multi-cluster core network. At present, users of the cluster private network, such as public security, railway and the like, definitely need to build a cluster private network supplied by multiple manufacturers and a whole-city or even national network, so that the requirement on the intercommunication and roaming functions among cluster core networks is definite. However, currently, there is no implementation scheme for group call handover between broadband trunking core networks, and therefore the above requirements of users cannot be met.
Disclosure of Invention
The technical problem to be solved by the invention is how to realize the group call switching between the broadband cluster core networks.
In order to solve the above technical problem, the present invention provides kinds of group call switching methods across cluster core networks, the method includes the following steps:
A. the terminal measures and reports the group calling information heard by the terminal to the source base station;
B. the source base station receives the group calling information, decides whether to perform a switching according to the group calling information, and if the switching is needed, the source base station sends th preparation switching request to a source cluster core network, and the source cluster core network generates a conversion switching request according to th preparation switching request and sends the conversion switching request to a target cluster core network;
C. the target cluster core network sends switching information to a group master control cluster core network according to the conversion switching request, wherein the switching information is used for informing the group master control cluster core network that a terminal exists and needs to perform group calling switching;
D. the group master control cluster core network controls the target cluster core network to perform group calling extension according to the switching information, and the target cluster core network sends a conversion switching response to the source cluster core network after the group calling extension is completed;
E. the source cluster core network generates a switching command according to the conversion switching response and sends the switching command to the source base station; and the source base station generates a reconfiguration message according to the generated switching command and sends the reconfiguration message to the terminal, and the terminal performs resource configuration according to the reconfiguration message and accesses the target base station.
Preferably, in the step B, the source cluster enhanced mobility management entity of the source cluster core network receives the th prepared handover request sent by the source base station, and the source cluster enhanced mobility management entity generates the converted handover request according to the th prepared handover request and sends the converted handover request to the target cluster enhanced mobility management entity of the target cluster core network.
Preferably, step C comprises the steps of:
the target cluster enhanced mobility management entity judges whether a group call exists at present, and when the group call does not exist, the target cluster enhanced mobility management entity sends th switching information to a target SCC of a target cluster core network;
the target SCC sends an address request to a target cluster enhanced home subscriber server of the terminal according to the group call identifier, and the target cluster enhanced home subscriber server sends the address of the group master control SCC of the group master control cluster core network to the target SCC according to the address request;
the target SCC sends second switching information to the group master SCC according to the address of the group master SCC;
the handover information includes th handover information and second handover information, and the group call identifier is carried in the handover information, th prepared handover request and converted handover request.
Preferably, step D comprises the steps of:
the group master control SCC generates group call extension information according to second switching information, sends the group call extension information to the target SCC, and performs group call extension by the target SCC according to the group call extension information;
after the group calling expansion is completed, the target cluster enhanced mobility management entity sends a second switching preparation request to the target base station;
the target base station generates a switching request response according to the second preparation switching request and sends the switching request response to the target cluster enhanced mobility management entity;
the target cluster enhanced mobility management entity generates the conversion switching response according to the switching request response and sends the conversion switching response to the source cluster enhanced mobility management entity;
and the switching request response and the conversion switching response both carry the group calling resource information of the target base station.
Preferably, in step E, the source cluster enhanced mobility management entity generates a handover command according to the converted handover response, and sends the handover command to the source base station;
and the switching command and the reconfiguration message both carry the group calling resource information of the target base station.
Preferably, the translation switching response is communicated to the source cluster core network through a transparent box.
The invention also discloses kinds of group calling switching system crossing cluster core network, the system includes terminal, source base station, target base station source cluster core network, target cluster core network and group master control cluster core network;
the terminal is used for measuring and reporting the group calling information answered by the terminal;
the source base station is used for receiving the group calling information and deciding whether to perform switching according to the group calling information, if the switching is required, the source base station is also used for sending an th preparation switching request to the source cluster core network, and the source cluster core network is used for generating a conversion switching request according to the th preparation switching request and sending the conversion switching request to the target cluster core network;
the target cluster core network is used for sending switching information to the group master control cluster core network according to the conversion switching request, wherein the switching information is used for informing the group master control cluster core network that a terminal exists and needs to perform group calling switching;
the group master control cluster core network is used for controlling the target cluster core network to perform group calling expansion according to the switching information, and after the group calling expansion is completed, the target cluster core network sends a conversion switching response to the source cluster core network;
the source cluster core network is also used for generating a switching command by the conversion switching response and sending the switching command to the source base station; the source base station is also used for generating a reconfiguration message according to the generated switching command and sending the reconfiguration message to the terminal, and the terminal is also used for carrying out resource configuration according to the reconfiguration message and accessing the target base station.
Preferably, the source cluster core network includes a source cluster enhanced mobility management entity, and the target cluster core network includes a target cluster enhanced mobility management entity;
the source cluster enhanced mobility management entity is used for receiving the th prepared handover request sent by the source base station, and the source cluster enhanced mobility management entity is also used for generating the conversion handover request according to the th prepared handover request and sending the conversion handover request to the target cluster enhanced mobility management entity.
Preferably, the target cluster core network further includes a target SCC, the group master control cluster core network includes a group master SCC, and the terminal includes a target cluster enhanced home subscriber server;
the target cluster enhanced mobility management entity is further configured to determine whether a group call exists currently, and when the group call does not exist, the target cluster enhanced mobility management entity sends th handover information to the target SCC;
the target SCC is used for sending an address request to the target cluster enhanced home subscriber server according to the group calling identifier; the target cluster enhanced home subscriber server is configured to send an address of a group master SCC of the group master cluster core network to the target SCC according to the address request;
the target SCC is further configured to send second handover information to the group master SCC according to the address of the group master SCC;
the handover information includes th handover information and second handover information, and the group call identifier is carried in the handover information, th prepared handover request and converted handover request.
Preferably, the group master SCC is further configured to generate group call extension information according to second switching information, send the group call extension information to the target SCC, and perform group call extension by the target SCC according to the group call extension information;
after the group calling expansion is completed, the target cluster enhanced mobility management entity is further used for sending a second switching preparation request to the target base station;
the target base station is further configured to generate a handover request response according to the second preparation handover request and send the handover request response to the target cluster enhanced mobility management entity;
the target cluster enhanced mobility management entity is further configured to generate the conversion handover response according to the handover request response, and send the conversion handover response to the source cluster enhanced mobility management entity;
and the switching request response and the conversion switching response both carry the group calling resource information of the base station.
Preferably, the source cluster enhanced mobility management entity is further configured to generate a handover command according to the converted handover response, and send the handover command to the source base station;
and the switching command and the reconfiguration message both carry the group calling resource information of the target base station.
The invention provides a group calling switching method and system of a cross-cluster core network, wherein a preparation switching request is generated by a source base station according to group calling information uploaded by a terminal, a conversion switching request is generated by the source cluster core network according to a preparation switching request and is sent to a target cluster core network, the target cluster core network sends switching information to a group main control cluster core network according to the conversion switching request, the group main control cluster core network controls the target cluster core network to carry out group calling expansion according to the switching information, after the group calling expansion is completed, the target cluster core network sends a conversion switching response to the source cluster core network, the source cluster core network controls a source base station to generate and send a reconfiguration message to a corresponding terminal according to the conversion switching response, and finally the terminal carries out resource configuration according to the reconfiguration message and accesses the target base station.
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 embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a flowchart of a group call handover method across cluster core networks according to preferred embodiments of the present invention;
fig. 2 is a flowchart of a group call handover method across cluster core networks according to another preferred embodiments of the present invention.
Detailed Description
The invention is described in further detail with reference to the following figures and examples.
A method for switching group call across cluster core network, as shown in FIG. 1, the method includes the following steps:
A. the terminal measures and reports the group calling information heard by the terminal to the source base station;
B. the source base station receives the group calling information, decides whether to perform a cooling switch according to the group calling information, and if the switching is needed, the source base station sends th preparation switching request to a source cluster core network, and the source cluster core network generates a conversion switching request according to th preparation switching request and sends the conversion switching request to a target cluster core network;
C. the target cluster core network sends switching information to a group master control cluster core network according to the conversion switching request, wherein the switching information is used for informing the group master control cluster core network that a terminal exists and needs to perform group calling switching; preferably, the translation switching response is transmitted to the source cluster core network through a transparent box;
D. the group master control cluster core network controls the target cluster core network to perform group calling extension according to the switching information, and the target cluster core network sends a conversion switching response to the source cluster core network after the group calling extension is completed;
E. the source cluster core network generates a switching command according to the conversion switching response and sends the switching command to the source base station; and the source base station generates a reconfiguration message according to the generated switching command and sends the reconfiguration message to the terminal, and the terminal performs resource configuration according to the reconfiguration message and accesses the target base station.
When a terminal needs to switch the cluster core network, the method carries out group calling expansion and group calling resource allocation in advance in the target cluster core network, so that the terminal can immediately answer group calling information after accessing the target base station, the switching performance can reach the same switching time delay as that of a public network, and the seamless switching of the group calling is realized.
, in the step B, the source cluster enhanced mobility management entity of the source cluster core network receives the th prepared handover request sent by the source base station, and the source cluster enhanced mobility management entity generates the converted handover request according to the th prepared handover request and sends the converted handover request to the target cluster enhanced mobility management entity of the target cluster core network.
Step , step C includes the steps of:
c1, the target cluster enhanced mobility management entity judges whether there is a group call currently, and when there is no group call, the target cluster enhanced mobility management entity sends th handover information to the target SCC of the target cluster core network;
c2, the target SCC sending an address request to a target cluster enhanced home subscriber server of the terminal according to the group call identifier, the target cluster enhanced home subscriber server sending the address of the group master control SCC of the group master control cluster core network to the target SCC according to the address request;
c3, the target SCC sending a second switching message to the group master SCC according to the address of the group master SCC;
the group call identifier corresponds to the group call information which is currently answered by the terminal, an address of a group main control SCC can be found according to group number information in the group call information, and then the second switching information is sent to the group main control SCC.
, step D includes the following steps:
d1, the group master control SCC generates group call extension information according to second switching information, and sends the group call extension information to the target SCC, and the target SCC performs group call extension according to the group call extension information;
d2, after the group call expansion is completed, the target cluster enhanced mobility management entity sends a second preparation switching request to the target base station;
d3, the target base station generates a switching request response according to the second preparation switching request and sends the switching request response to the target cluster enhanced mobility management entity;
d4, the target cluster enhanced mobility management entity generates the conversion switching response according to the switching request response and sends the conversion switching response to the source cluster enhanced mobility management entity;
and the switching request response and the conversion switching response both carry the group calling resource information of the target cluster network or the target base station. The target cluster network comprises a target base station and a target cluster core network.
Step , in step E, the source cluster enhanced mobility management entity generates a handover command according to the converted handover response, and sends the handover command to the source base station;
and the switching command and the reconfiguration message both carry the group calling resource information of the target base station.
The invention defines and carries the group calling information which is currently answered by the terminal among the multi-cluster core networks in an extending way, and performs group calling resource allocation in advance at the side of the target cluster core network during switching, so that the group calling information can be answered immediately after the terminal accesses the target cluster core network, the switching performance can reach the same switching time delay as that of a public network, and the seamless switching of the group calling is realized.
Corresponding to the method, group call switching systems of cross-cluster core networks exist, and the system comprises a terminal, a source base station, a target base station, a source cluster core network, a target cluster core network and a group master control cluster core network;
the terminal is used for measuring and reporting the group calling information answered by the terminal;
the source base station is used for receiving the group calling information and deciding whether to perform switching according to the group calling information, if the switching is required, the source base station is also used for sending an th preparation switching request to the source cluster core network, and the source cluster core network is used for generating a conversion switching request according to the th preparation switching request and sending the conversion switching request to the target cluster core network;
the target cluster core network is used for sending switching information to the group master control cluster core network according to the conversion switching request, wherein the switching information is used for informing the group master control cluster core network that a terminal exists and needs to perform group calling switching;
the group master control cluster core network is used for controlling the target cluster core network to perform group calling expansion according to the switching information, and after the group calling expansion is completed, the target cluster core network sends a conversion switching response to the source cluster core network;
the source cluster core network is also used for generating a switching command by the conversion switching response and sending the switching command to the source base station; the source base station is also used for generating a reconfiguration message according to the generated switching command and sending the reconfiguration message to the terminal, and the terminal is also used for carrying out resource configuration according to the reconfiguration message and accessing the target base station.
, the source cluster core network includes a source cluster enhanced mobility management entity, and the target cluster core network includes a target cluster enhanced mobility management entity;
the source cluster enhanced mobility management entity is configured to receive the th prepared handover request sent by the source base station, and the source cluster enhanced mobility management entity is further configured to generate the translated handover request according to the th prepared handover request and send the translated handover request to the target cluster enhanced mobility management entity.
, the target cluster core network further includes a target SCC, the group master cluster core network includes a group master SCC, and the terminal includes a target cluster enhanced home subscriber server;
the target cluster enhanced mobility management entity is further configured to determine whether a group call exists currently, and when the group call does not exist, the target cluster enhanced mobility management entity sends th handover information to the target SCC;
the target SCC is used for sending an address request to the target cluster enhanced home subscriber server according to the group calling identifier; the target cluster enhanced home subscriber server is configured to send an address of a group master SCC of the group master cluster core network to the target SCC according to the address request;
the target SCC is further configured to send second handover information to the group master SCC according to the address of the group master SCC;
the handover information includes th handover information and second handover information, and the group call identifier is carried in the handover information, th prepared handover request and converted handover request.
, the group master SCC is also used for generating group call extension information according to second switching information and sending the group call extension information to the target SCC, and the target SCC carries out group call extension according to the group call extension information;
and the switching request response and the conversion switching response both carry the group calling resource information of the target base station.
And , the source cluster enhanced mobility management entity is further configured to generate a handover command according to the converted handover response and send the handover command to the source base station, where the handover command and the reconfiguration message both carry the group call resource information of the target base station.
Since the steps of the system for realizing group call switching are the same as those of the method, the system is not described again.
The process of the invention is described in detail below by means of another examples.
As shown in fig. 2, the method of the present embodiment includes the following steps:
1, the terminal reports the currently answered group calling information in the measurement.
And 2, the source base station, namely the source eNB, makes a switching decision, and sends a switching request to a source cluster enhanced mobility management entity, namely the source eMMC (enhanced mobile equipment) through a handover Required message (equivalent to the ready switching request) of an interface S1, wherein the message carries the currently answered group number information.
The 3-source eMMC informs the target cluster enhanced mobility management entity through a Forward Relocation Request message (namely, the above-mentioned conversion switching Request), namely, the target eMMC performs switching resource preparation and carries the currently answered group call identifier or group call information.
4, the target eMME sends a Message (i.e. th handover information) to the target SCC to notify the target SCC that the current terminal moves to the current cluster core network (i.e. the target cluster core network) and needs to build a group call, when there is no group call.
And 5, the target SCC requests the address of the group master control SCC to a target cluster enhanced home subscriber server of the terminal, namely the UE-eHSS according to the group number information or the group call identifier. And the target cluster enhanced home subscriber server sends the address of the group master control SCC of the group master control cluster core network to the target SCC according to the address request.
And 6, the target SCC sends a Message (second switching information) to the group master SCC to inform the group master SCC of group call extension.
And 7, the group control SCC informs the target SCC of group call extension, and the target SCC completes the group call extension process.
8, the target eMME continues to perform the S1 Handover process, and notifies the target base station, that is, the target eNB performs Handover resource preparation (Handover Request), the target eNB carries the public network resources and group call resources related to Handover in the transparent transmission box, the target eNB sends the Handover Request acknowledgement message (that is, Handover Request Response) to the target eMME through the target eNB, the target eMME sends the source eMME through the Forward registration Response message, the source eMME sends the source eNB through the Handover Command (that is, Handover Command), and the source eNB sends the terminal UE through the RRC reconfiguration message.
9 the source base station, i.e. the source eNB, informs the terminal UE to perform the resource allocation on the target side, and when the UE accesses the target side, the group call receiving resource allocation is completed, so that the group call data can be received immediately. In fig. 2, the source SGW is ServingGateWay of the source cluster core network; the target SGW is a Serving GateWay way of a target cluster core network, and the source SCC is an SCC of a source cluster core network; PGW is PDN GateWay; the group master control eHSS is a cluster enhanced home subscriber server of a group master control cluster core network.
The invention defines that when a terminal is in a CONNECTED ECM-CONNECTED answering group call, the terminal moves from cluster core networks to the service range of another cluster core networks, a source core network carries group call identification information which is being answered by the terminal in a Forward Relocation Request message, a target cluster core network immediately informs a group master control cluster core network after receiving the message, UEs in the current group call move into the cluster core network, the group master control cluster core network informs the current cluster core network (namely a target cluster core network) of group call expansion, the target cluster core network informs a target eNB of resource switching preparation after the group call expansion, the target eNB simultaneously carries configuration information of an E-RAB (evolved radio access bearer) and a T-RAB (trunk-RAB, cluster radio bearer) in a switching resource preparation response message (namely a switching Request response or a switching conversion switching response), the source eNB informs the source eNB to the source eNB through a transparent transmission box, the terminal reconfigures the target eNB while reconfiguring, and can also immediately realize the same switching performance of the group call public network.
The above embodiments are merely illustrative of the present invention and are not to be construed as limiting the invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and the technical solution of the present invention is covered by the claims of the present invention.
Claims (9)
1, kinds of group calling switching method crossing cluster core network, characterized in that, the method includes following steps:
A. the terminal measures and reports the group calling information heard by the terminal to the source base station;
B. the source base station receives the group calling information, decides whether to switch according to the group calling information, and if the switching is needed, the source base station sends th preparation switching request to a source cluster core network, and the source cluster core network generates a conversion switching request according to th preparation switching request and sends the conversion switching request to a target cluster core network;
C. the target cluster core network sends switching information to a group master control cluster core network according to the conversion switching request, wherein the switching information is used for informing the group master control cluster core network that a terminal exists and needs to perform group calling switching;
D. the group master control cluster core network controls the target cluster core network to perform group calling extension according to the switching information, and after the group calling extension is completed, the target cluster core network sends a conversion switching response to the source cluster core network;
E. the source cluster core network generates a switching command according to the conversion switching response and sends the switching command to the source base station; the source base station generates a reconfiguration message according to the generated switching command and sends the reconfiguration message to a terminal, and the terminal performs resource configuration according to the reconfiguration message and accesses a target base station;
wherein the step C comprises the following steps:
the target cluster enhanced mobility management entity judges whether a group call exists at present, and when the group call does not exist, the target cluster enhanced mobility management entity sends th switching information to a target SCC of a target cluster core network;
the target SCC sends an address request to a target cluster enhanced home subscriber server of the terminal according to the group call identifier, and the target cluster enhanced home subscriber server sends the address of the group master control SCC of the group master control cluster core network to the target SCC according to the address request;
the target SCC sends second switching information to the group master SCC according to the address of the group master SCC;
the handover information includes th handover information and second handover information, and the group call identifier is carried in the handover information, th prepared handover request and converted handover request.
2. The method according to claim 1, wherein, in the step B,
and a source cluster enhanced mobility management entity of the source cluster core network receives the th prepared handover request sent by the source base station, generates the conversion handover request according to the th prepared handover request, and sends the conversion handover request to a target cluster enhanced mobility management entity of the target cluster core network.
3. The method of claim 2, wherein step D comprises the steps of:
the group master control SCC generates group call extension information according to second switching information, sends the group call extension information to the target SCC, and performs group call extension by the target SCC according to the group call extension information;
after the group calling expansion is completed, the target cluster enhanced mobility management entity sends a second switching preparation request to the target base station;
the target base station generates a switching request response according to the second preparation switching request and sends the switching request response to the target cluster enhanced mobility management entity;
the target cluster enhanced mobility management entity generates the conversion switching response according to the switching request response and sends the conversion switching response to the source cluster enhanced mobility management entity;
and the switching request response and the conversion switching response both carry the group calling resource information of the target base station.
4. The method according to claim 3, wherein in step E, the source cluster enhanced mobility management entity generates a handover command according to the translated handover response, and sends the handover command to the source base station;
and the switching command and the reconfiguration message both carry the group calling resource information of the target base station.
5. The method of claim 1, wherein the transmutation switch response is communicated to the source cluster core network through a transparent box.
6, kinds of group call switching system crossing cluster core network, wherein the system includes terminal, source base station, target base station, source cluster core network, target cluster core network and group master control cluster core network;
the terminal is used for measuring and reporting the group calling information answered by the terminal;
the source base station is used for receiving the group calling information and deciding whether to perform switching according to the group calling information, if the switching is required, the source base station is also used for sending an th preparation switching request to the source cluster core network, and the source cluster core network is used for generating a conversion switching request according to the th preparation switching request and sending the conversion switching request to the target cluster core network;
the target cluster core network is used for sending switching information to the group master control cluster core network according to the conversion switching request, wherein the switching information is used for informing the group master control cluster core network that a terminal exists and needs to perform group calling switching;
the group master control cluster core network is used for controlling the target cluster core network to perform group calling expansion according to the switching information, and after the group calling expansion is completed, the target cluster core network sends a conversion switching response to the source cluster core network;
the source cluster core network is also used for generating a switching command by the conversion switching response and sending the switching command to the source base station; the source base station is also used for generating a reconfiguration message according to the generated switching command and sending the reconfiguration message to a terminal, and the terminal is also used for carrying out resource configuration according to the reconfiguration message and accessing the target base station;
the target cluster core network further comprises a target SCC, the group master cluster core network comprises a group master SCC, and the target cluster core network comprises a target cluster enhanced home subscriber server;
the target cluster enhanced mobility management entity is further configured to determine whether a group call exists currently, and when the group call does not exist, the target cluster enhanced mobility management entity sends th handover information to the target SCC;
the target SCC is used for sending an address request to the target cluster enhanced home subscriber server according to the group calling identifier; the target cluster enhanced home subscriber server is configured to send an address of a group master SCC of the group master cluster core network to the target SCC according to the address request;
the target SCC is further configured to send second handover information to the group master SCC according to the address of the group master SCC;
the handover information includes th handover information and second handover information, and the group call identifier is carried in the handover information, th prepared handover request and converted handover request.
7. The system of claim 6, wherein the source cluster core network comprises a source cluster enhanced mobility management entity and the target cluster core network comprises a target cluster enhanced mobility management entity;
the source cluster enhanced mobility management entity is used for receiving the th prepared handover request sent by the source base station, and the source cluster enhanced mobility management entity is also used for generating the conversion handover request according to the th prepared handover request and sending the conversion handover request to the target cluster enhanced mobility management entity.
8. The system of claim 7,
the group master control SCC is also used for generating group call extension information according to second switching information, sending the group call extension information to the target SCC, and performing group call extension by the target SCC according to the group call extension information;
after the group calling expansion is completed, the target cluster enhanced mobility management entity is further used for sending a second switching preparation request to the target base station;
the target base station is further configured to generate a handover request response according to the second preparation handover request and send the handover request response to the target cluster enhanced mobility management entity;
the target cluster enhanced mobility management entity is further configured to generate the conversion handover response according to the handover request response, and send the conversion handover response to the source cluster enhanced mobility management entity;
and the switching request response and the conversion switching response both carry the group calling resource information of the target base station.
9. The system of claim 8, wherein the source cluster enhanced mobility management entity is further configured to generate a handover command according to the translated handover response, and send the handover command to the source base station;
and the switching command and the reconfiguration message both carry the group calling resource information of the target base station.
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| CN110730483A (en) * | 2018-07-16 | 2020-01-24 | 华为技术有限公司 | Communication method, device and system |
| WO2020015606A1 (en) * | 2018-07-16 | 2020-01-23 | 华为技术有限公司 | Communication method, device and system |
| CN110769471B (en) * | 2018-07-25 | 2022-04-19 | 成都鼎桥通信技术有限公司 | Switching and device of broadband trunking communication network and public network |
| CN110876120B (en) * | 2018-09-03 | 2021-10-26 | 普天信息技术有限公司 | Processing method and device for cell switching of clustered terminals and base station |
| CN110149596B (en) * | 2019-04-18 | 2022-04-15 | 海能达通信股份有限公司 | Group calling transfer method and storage medium |
| CN114697884B (en) * | 2020-12-31 | 2023-08-22 | 成都鼎桥通信技术有限公司 | Neighbor broadcasting method of group calling configuration information and enhanced mobile management entity |
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