CN106507318B

CN106507318B - Switching judgment method and device for cluster calling UE

Info

Publication number: CN106507318B
Application number: CN201510560838.0A
Authority: CN
Inventors: 王晓峰
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2015-09-06
Filing date: 2015-09-06
Publication date: 2020-04-03
Anticipated expiration: 2035-09-06
Also published as: CN106507318A

Abstract

The invention discloses a switching judgment method and a switching judgment device for cluster calling UE, relates to the technical field of communication, and aims to improve the probability that the cluster calling UE can be successfully switched to a base station supporting a cluster function, so that the UE in a group can continue to perform cluster group service in a target cell, and the stability of the group service is improved. The invention provides a switching judgment method for cluster calling UE equipment, which comprises the following steps: when a source base station of cluster calling UE determines that the UE needs to carry out inter-base station switching, the source base station judges whether a target base station to be switched supports cluster services; and the source base station performs inter-base station switching operation on the UE according to the judgment result.

Description

Switching judgment method and device for cluster calling UE

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a handover decision method and apparatus for a group call UE.

Background

The private network broadband trunking system based on the Time Division Long Term Evolution (TD-LTE) technology can maximally meet basic service requirements of different industries and different networking scenes, and is more and more widely concerned.

When a connected mobile UE device (UE) moves to a cell edge, a signal of an original cell becomes weak, a signal of a new cell becomes strong, and in order to ensure service reception, a radio bearer needs to be switched to the new cell through a switching procedure to continue a service. The TD-LTE switching mainly comprises S1 switching, X2 switching, intra-base station cell switching and intersystem switching. And the base station performs switching judgment by combining a corresponding algorithm strategy through the measurement report of the UE. When a Radio bearer is established, a base station issues a Radio Resource Control (RRC) connection reconfiguration RRC connection reconfiguration message to a UE, where the RRC connection reconfiguration message includes a Measurement Configuration message for controlling a Measurement process of a connected UE. And after receiving the Measurement Configuration message, the UE detects signals of the serving cell and the neighboring cell, and reports the Measurement result to the base station through a Measurement Report message according to the Measurement Configuration and the reporting rule. The base station judges whether the UE needs to be switched or not by combining an algorithm according to the measurement report of the UE, and selects the base station or the cell to be switched if the UE needs to be switched.

The specific mechanism of the cluster system is as follows: the calling UE is released, and the cluster group is released. Thus, the stability of the cluster-calling UE determines the stability of the cluster group in a sense. However, not all core networks and base stations support trunking services. According to the existing switching judgment, if the calling UE is switched to a base station which does not support the trunking service, even if the UE is successfully switched, the trunking service channel corresponding to the calling UE cannot be successfully established, so that the trunking service is released, and all members in the group cannot receive the trunking service. Often, the number of group UEs is not one or two, and may be ten, hundreds, or even thousands. The more the number of UEs in the group, the greater the impact caused by the release of the trunking service, and the more complaints. Therefore, it is very important that the handover of the group calling UE is successful or not.

In summary, in the prior art, the handover decision method of the UE cannot determine whether the base station to be handed over supports the trunking service, and if the UE is the trunking main call UE, the UE is handed over to a base station that does not support the trunking service, which easily causes that the UE in the group cannot continue the trunking service in the target cell.

Disclosure of Invention

The embodiment of the invention provides a switching judgment method and a switching judgment device for cluster calling UE, which are used for improving the probability that the cluster calling UE can be successfully switched to a base station supporting a cluster function, so that the UE in a cluster can continue to perform cluster group service in a target cell, and the stability of the group service is improved.

The embodiment of the invention provides a switching judgment method for cluster main call User Equipment (UE), which comprises the following steps:

when a source base station of cluster calling UE determines that the UE needs to carry out inter-base station switching, the source base station judges whether a target base station to be switched supports cluster services;

and the source base station performs inter-base station switching operation on the UE according to the judgment result.

In the embodiment of the invention, when a source base station of cluster main call UE determines that the UE needs to perform inter-base station switching, whether a target base station to be switched supports cluster services is judged by adding judgment conditions in an original switching judgment scene, and the source base station performs inter-base station switching operation on the cluster main call UE according to the judgment result, so that the cluster main call UE can be switched to the base station supporting the cluster services, thereby avoiding the situation that the cluster main call service cannot be performed due to the fact that the UE is switched to a base station which does not support the cluster services, improving the probability that the cluster main call UE can be successfully switched to the base station supporting the cluster functions, enabling the UE in the cluster to continue to perform the cluster group services in a target cell, and further improving the stability of the group services.

Preferably, the determining, by the source base station, whether the target base station to be switched supports the trunking service specifically includes:

when an X2 interface exists between the source base station and the target base station, the source base station sends a Setup Request message to the target base station, then receives a Setup Response message sent by the target base station, acquires the capability information of whether the target base station supports the trunking service, and judges whether the target base station supports the trunking service according to the capability information;

or, when there is no X2 interface between the source base station and the target base station, the source base station receives an MME configuration conversion MME configuration transfer message sent by a Mobility Management Entity (MME), and obtains capability information of whether the target base station supports the trunking service from the MME configuration conversion MME, and determines whether the target base station supports the trunking service according to the capability information; the information indicating whether the target base station supports the trunking service is acquired by the MME through a base station Configuration Transfer message sent by the target base station and carried in the MME Configuration Transfer message.

Preferably, the handover decision method further includes: and the source base station sends information whether the source base station supports the trunking service to the target base station.

Preferably, the sending, by the source base station, information whether the source base station supports the trunking service to the target base station specifically includes:

the source base station sends the information whether the source base station supports the trunking service to the target base station by establishing a Request Setup Request message; wherein, the Setup Request message carries capability information whether the source base station supports the trunking service.

Therefore, other base stations can also acquire the information whether the source base station supports the trunking service.

Preferably, the handover decision method further includes: and the source base station acquires the group to which the UE belongs and the indication information of whether the UE is the calling UE from a Mobility Management Entity (MME).

Preferably, the obtaining, by the source base station, the group to which the UE belongs and the indication information of whether the UE is the main call UE from the mobility management entity MME specifically include:

and the source base station receives a radio access bearer establishment Request E-RAB Setup Request message sent by the MME, and acquires a group to which the UE belongs and indication information of whether the UE is a calling UE.

The switching judgment method for the cluster main call user equipment UE provided by the embodiment of the invention comprises the following steps:

the target base station of the UE needing to be switched among the base stations determines whether the target base station supports the information of the trunking service;

and the target base station sends the information to the source base station.

Preferably, the decision method further includes: and the target base station acquires the information whether the source base station of the UE supports the trunking service.

Preferably, the obtaining, by the target base station, information whether the source base station of the UE supports the trunking service specifically includes:

when an X2 interface exists between the target base station and the source base station, the target base station receives a Setup Request message sent by the source base station, and acquires information whether the source base station supports the trunking service from the Setup Request message;

or, when there is no X2 interface between the target base station and the source base station, the target base station receives an MME Configuration conversion MME Configuration Transfer message sent by a mobility management entity MME, and acquires information of whether the source base station supports the trunking service from the MME, where the information of whether the source base station supports the trunking service is acquired by the MME through a base station Configuration conversion eNB Configuration Transfer message sent by the source base station and carried in the MME Configuration conversion eNB Configuration Transfer message.

Preferably, the sending, by the target base station, the information whether the target base station supports the trunking service to the source base station specifically includes:

when an X2 interface exists between the target base station and the source base station, the target base station sends information whether the target base station supports the trunking service to the source base station by establishing a response SetupResponse message;

or, when there is no X2 interface between the target base station and the source base station, the target base station sends information whether the target base station supports the trunking service to a mobility management entity MME through a base station Configuration conversion eNB Configuration Transfer message, and the MME sends information whether the target base station supports the trunking service to the source base station through an MME Configuration conversion MME Configuration Transfer message.

Preferably, the handover decision method further includes: and the target base station acquires the group to which the UE belongs and the indication information of whether the UE is the calling UE from a Mobility Management Entity (MME).

Preferably, the obtaining, by the target base station, the group to which the UE belongs and the indication information of whether the UE is the main call UE from the mobility management entity MME specifically includes:

when the UE carries out X2 handover between base stations, the target base station confirms a PathSwitch Request Acknowledge message through a path switching Request to acquire a group to which the UE belongs and indication information of whether the UE is a calling UE from the MME;

or, when the UE performs S1 handover between base stations, the target base station obtains, from the MME, a group to which the UE belongs and indication information of whether the UE is a calling UE through a handover request message.

a mobility management entity MME determines that indication information of whether a target base station to which the UE needs to be switched supports trunking services needs to be sent to a source base station of the UE;

and the MME sends indication information of whether the target base station supports the trunking service to the source base station.

Preferably, the sending, by the MME, the indication information of whether the target base station supports the trunking service to the source base station specifically includes:

the MME receives a base station Configuration conversion eNB Configuration Transfer message sent by the target base station, and acquires information for indicating whether the target base station supports the trunking service or not;

the MME sends an MME Configuration Transfer message to the source base station; wherein the MME Configuration Transfer message carries the information indicating whether the target base station supports the trunking service.

Preferably, the handover decision method further includes:

a mobility management entity MME determines that indication information of whether a source base station of the UE supports trunking services needs to be sent to a target base station which the UE needs to be switched;

and the MME sends indication information of whether the source base station supports the trunking service to the target base station.

Preferably, the sending, by the MME, the indication information of whether the source base station supports the trunking service to the target base station specifically includes:

the MME receives a base station Configuration conversion eNB Configuration Transfer message sent by the source base station, and acquires information for indicating whether the source base station supports the trunking service or not;

the MME sends an MME Configuration Transfer message to the target base station; wherein the MME Configuration Transfer message carries the information indicating whether the source base station supports the trunking service.

Preferably, the handover decision method further includes:

the MME sends a group to which the cluster calling UE belongs and indication information of whether the UE is the calling UE to the source base station; and/or the presence of a gas in the gas,

and the MME sends the group to which the cluster calling UE belongs and the indication information of whether the UE is the calling UE to the target base station.

Preferably, the sending, by the MME, the group to which the cluster-based paging UE belongs and the indication information of whether the UE is the paging-based UE to the source base station specifically include:

and the MME sends the group to which the UE belongs and the indication information of whether the UE is the calling UE to the source base station through a radio access bearer establishment Request E-RAB Setup Request message.

Preferably, the sending, by the MME, the group to which the cluster-based paging UE belongs and the indication information of whether the UE is the paging-based UE to the target base station specifically include:

when the UE carries out X2 switching between base stations, the MME sends a group to which the UE belongs and indication information of whether the UE is a calling UE to the target base station through a Path switching request confirmation Path switching request acknowledgement message;

or, when the UE performs S1 Handover between base stations, the MME sends, to the target base station, a group to which the UE belongs and indication information of whether the UE is a caller UE, through a Handover Request message.

The embodiment of the invention provides a switching decision device for cluster calling User Equipment (UE), which comprises:

a judging unit, configured to, when it is determined that a cluster-based calling UE needs to perform handover between a source base station and a target base station, and when the apparatus serves as the source base station of the UE, judge whether the target base station to be handed over supports a cluster service;

and the execution unit is used for carrying out switching operation between the base stations on the UE according to the judgment result.

Preferably, when the determining unit determines whether the target base station to be switched supports the trunking service, the determining unit is specifically configured to:

when an X2 interface exists between the source base station and the target base station, sending a Setup Request message to the target base station, then receiving a Setup Response message sent by the target base station, acquiring the capability information of whether the target base station supports the trunking service, and judging whether the target base station supports the trunking service according to the capability information;

or, when there is no X2 interface between the source base station and the target base station, receiving an MME Configuration conversion Transfer message sent by a mobility management entity MME, and obtaining capability information of whether the target base station supports the trunking service from the MME, and determining whether the target base station supports the trunking service according to the capability information; wherein, the information whether the target base station supports the trunking service is acquired by the MME through a base station Configuration conversion enb Configuration Transfer message sent by the target base station and carried in the MME Configuration Transfer message.

Preferably, the judging unit is further configured to: and sending the information whether the source base station supports the trunking service to the target base station.

Preferably, when the determining unit sends the information whether the source base station supports the trunking service to the target base station, the determining unit is specifically configured to:

sending the information whether the source base station supports the trunking service to the target base station by establishing a Request Setup Request message; wherein, the Setup Request message carries capability information whether the source base station supports the trunking service.

Preferably, the judging unit is further configured to:

and acquiring the group to which the UE belongs and the indication information of whether the UE is the calling UE from a Mobility Management Entity (MME).

Preferably, when the determining unit obtains the group to which the UE belongs and the indication information of whether the UE is the main call UE from the mobility management entity MME, the determining unit is specifically configured to:

and receiving a radio access bearer establishment Request (E-RAB Setup Request) message sent by the MME, and acquiring a group to which the UE belongs and indication information of whether the UE is the calling UE.

a determining unit, configured to determine, when the apparatus is a target base station of a UE that needs to perform inter-base station handover, whether the target base station supports information of a trunking service;

a sending unit, configured to send the information to the source base station.

Preferably, the determining unit is further configured to: and acquiring information whether the source base station of the UE supports the trunking service.

Preferably, when the determining unit obtains the information whether the source base station of the UE supports the trunking service, the determining unit is specifically configured to:

when an X2 interface exists between the target base station and the source base station, receiving a Setup Request message sent by the source base station, and acquiring information whether the source base station supports the trunking service;

or, when there is no X2 interface between the target base station and the source base station, receiving an MME Configuration conversion MME Configuration Transfer message sent by a mobility management entity MME, and acquiring information of whether the source base station supports the trunking service from the MME, where the information of whether the source base station supports the trunking service is acquired by the MME through a base station Configuration conversion eNB Configuration Transfer message sent by the source base station and carried in the MME Configuration conversion eNB Configuration Transfer message.

Preferably, the sending unit is specifically configured to:

when an X2 interface exists between the target base station and the source base station, sending information whether the target base station supports the trunking service to the source base station by establishing a Response Setup Response message;

or, when there is no X2 interface between the target base station and the source base station, sending the information whether the target base station supports the trunking service to a mobility management entity MME through a base station Configuration conversion enb Configuration Transfer message, and sending the information whether the target base station supports the trunking service to the source base station through an MME Configuration conversion MME Configuration Transfer message by the MME.

Preferably, the determining unit is further configured to:

Preferably, when the determining unit obtains, from a mobility management entity MME, the group to which the UE belongs and the indication information of whether the UE is a calling UE, the determining unit is specifically configured to:

when the UE carries out X2 switching between base stations, a Path switching request is used for confirming that a Path Switch RequestAcknowledgee message acquires a group to which the UE belongs and indication information whether the UE is a calling UE from the MME;

or when the UE performs S1 Handover between base stations, obtaining, from the MME, a group to which the UE belongs and indication information of whether the UE is a calling UE through a Handover Request message.

Preferably, when the determining unit is used as the source base station of the UE, the determining unit is further configured to determine whether the target base station to be switched supports the trunking service when it is determined that the trunking main call UE needs to perform switching between the source base station and the target base station, and perform inter-base station switching operation on the UE according to a determination result.

a determining unit, configured to determine that indication information indicating whether a target base station to which the UE needs to be switched supports the trunking service needs to be sent to a source base station of the UE;

a sending unit, configured to send, to the source base station, indication information indicating whether the target base station supports the trunking service.

Preferably, the sending unit is specifically configured to:

receiving a base station Configuration conversion eNB Configuration Transfer message sent by the target base station, and acquiring information for indicating whether the target base station supports the trunking service or not;

sending an MME Configuration Transfer message to the source base station; wherein the MME Configuration Transfer message carries the information indicating whether the target base station supports the trunking service.

Preferably, the determining unit is further configured to:

determining indication information whether a source base station of the UE supports the trunking service or not to be sent to a target base station which the UE needs to be switched;

and sending indication information of whether the source base station supports the trunking service to the target base station.

Preferably, when the determining unit sends the indication information indicating whether the source base station supports the trunking service to the target base station, the determining unit is specifically configured to:

receiving a base station Configuration conversion eNB Configuration Transfer message sent by the source base station, and acquiring information for indicating whether the source base station supports the trunking service;

sending an MME Configuration Transfer message to the target base station; wherein the MME Configuration Transfer message carries the information indicating whether the source base station supports the trunking service.

Preferably, the sending unit is further configured to:

sending the group to which the cluster calling UE belongs and the indication information of whether the UE is the calling UE to the source base station; and/or the presence of a gas in the gas,

and sending the group to which the cluster calling UE belongs and the indication information of whether the UE is the calling UE to the target base station.

Preferably, when the sending unit sends the group to which the cluster-based paging UE belongs and the indication information of whether the UE is the paging UE to the source base station, the sending unit is specifically configured to:

and sending the group to which the UE belongs and the indication information of whether the UE is the calling UE to the source base station through a radio access bearer establishment Request E-RAB Setup Request message.

Preferably, when the sending unit sends the group to which the cluster-based paging UE belongs and the indication information of whether the UE is the paging UE to the target base station, the sending unit is specifically configured to:

when the UE carries out X2 switching between base stations, a Path switching request is used for confirming that a Path Switch RequestAcknowledgee message sends a group to which the UE belongs and indication information of whether the UE is a calling UE to the target base station;

or, when the UE performs S1 Handover between base stations, sending, to the target base station, a group to which the UE belongs and indication information of whether the UE is a caller UE, through a Handover Request message.

Drawings

Fig. 1 is a schematic flowchart of a handover decision method for a group calling UE at a source base station of the group calling UE according to an embodiment of the present invention;

fig. 2 is a schematic flowchart of a handover decision method for a group calling UE at a target base station of the group calling UE according to an embodiment of the present invention;

fig. 3 is a schematic flowchart of a handover decision method for a group call UE at an MME according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a handover decision device for a group calling UE at a source base station of the group calling UE according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a handover decision device for a group calling UE at a target base station of the group calling UE according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a handover decision device for a group call UE at an MME according to an embodiment of the present invention.

Detailed Description

Aiming at the characteristics of cluster group calling, when a base station carries out switching judgment, under the original judgment scene, a judgment condition is added: if the UE is the trunking calling UE, only the cell of the base station or the base station supporting the trunking service is selected to switch when the switching judgment is carried out.

The technical solution provided by the embodiment of the present invention is explained below with reference to the accompanying drawings.

Referring to fig. 1, an embodiment of the present invention provides a method for determining handover of a group calling UE device, on a source base station side of the group calling UE, where the method includes:

s101, when a source base station of cluster calling UE determines that the UE needs to be switched among base stations, the source base station judges whether a target base station to be switched supports cluster services;

and S102, the source base station performs inter-base station switching operation on the UE according to the judgment result.

The source base station of the cluster main call UE determines that the UE needs to perform inter-base station handover, and may be configured to determine whether to perform inter-base station handover according to a measurement report and by combining a corresponding algorithm policy when the source base station of the cluster main call UE receives the measurement report reported by the UE.

Preferably, the source base station determines whether the target base station to be switched supports the trunking service, and specifically includes the following two situations:

(1) when an X2 interface exists between the source base station and the target base station, the source base station sends a Setup Request message to the target base station, then receives a Setup Response message sent by the target base station, acquires the capability information of whether the target base station supports the trunking service, and judges whether the target base station supports the trunking service according to the capability information.

Wherein, the Setup Response message carries capability information whether the target base station supports Trunking service (Trunking If Support). I.e. adding message attributes (IE/Group) on the basis of the prior art, the definition of the IE/Group can be seen from table 1.

TABLE 1

(2) When no X2 interface exists between the source base station and the target base station, the source base station receives an MME Configuration conversion message sent by a Mobility Management Entity (MME), acquires the capability information of whether the target base station supports the trunking service, and judges whether the target base station supports the trunking service according to the capability information; the information indicating whether the target base station supports the trunking service is acquired by the MME through a base station Configuration Transfer message sent by the target base station and carried in the MME Configuration Transfer message.

Wherein, the MME Configuration Transfer message and the eNB Configuration Transfer message respectively carry capability information whether the target base station supports a Trunking service (trunk If Support). I.e. adding message attributes (IE/Group) on the basis of the prior art, the definition of the IE/Group can be seen from table 2.

TABLE 2

Preferably, the sending, by the source base station, information whether the source base station supports the trunking service to the target base station specifically includes: and the source base station sends the information whether the source base station supports the trunking service to the target base station by establishing a Request Setup Request message.

Wherein, the Setup Request message carries capability information whether the source base station supports Trunking service (Trunking If Support). I.e. adding message attributes (IE/Group) on the basis of the prior art, the definition of the IE/Group can be seen from table 3.

TABLE 3

Preferably, the handover method further includes: and the source base station acquires the group to which the UE belongs and the indication information of whether the UE is the calling UE from a Mobility Management Entity (MME).

Preferably, the obtaining, by the source base station, the group to which the UE belongs and the indication information of whether the UE is the main call UE from the mobility management entity MME specifically include: and the source base station receives a radio access bearer establishment Request E-RAB Setup Request message sent by the MME, and acquires a group to which the UE belongs and indication information of whether the UE is a calling UE.

Wherein, the E-RAB Setup Request message carries the group identifier (TrunkingGroup ID) of the UE and information of whether to call the UE (if Original call). I.e. adding message attributes (IE/Group) on the basis of the prior art, the definition of the IE/Group can be seen from table 4.

TABLE 4

Therefore, when the source base station of the UE determines that the UE needs to perform inter-base station handover, the source base station performs a handover decision: the source base station sends information carrying the information for indicating whether the source base station supports the trunking service to a target base station needing to be switched, and receives the information carrying the information for indicating whether the target base station supports the trunking service sent by the target base station, and the source base station judges whether the target base station supports the trunking service according to the information carrying the information for indicating whether the target base station supports the trunking service. If the judgment result shows that the target base station does not support the trunking service, the source base station continuously repeats the process and interacts information whether the target base station supports the trunking service with other target base stations needing to be switched until the target base station supporting the trunking service is judged, and at this moment, the UE and the target base station supporting the trunking service perform inter-base station switching operation. The above-mentioned sequence of the source base station interacting the information whether each supports the trunking service with the different target base stations is carried out in sequence according to the priority list of the target base station which needs to be switched.

Or, without being limited to the foregoing, the source base station may simultaneously interact with multiple target base stations that need to be handed over, the information whether each of the target base stations supports the trunking service. If the judgment result shows that only one target base station supporting the trunking service exists, the UE and the target base station supporting the trunking service perform inter-base station switching operation; and if the judgment result shows that a plurality of target base stations supporting the trunking service exist, selecting the target base station to be switched from the target base stations supporting the trunking service according to the priority list.

When the source base station of the cluster calling UE completes the switching judgment and determines to perform inter-base station switching operation with a target base station supporting the cluster service, the method comprises the following steps:

if the target base station to which the UE is switched does not have the cluster group channel of the group, but the target cell to which the UE is switched has the cluster group channel of the group, the core network initiates a cluster context establishment flow of the corresponding group, sends a cluster paging message and informs the cell of cluster group service establishment. And then, aiming at the calling UE, initiating the establishment flow of the cluster calling bearer.

If the target base station to which the UE is switched has the cluster group channel of the group, but the target cell to which the UE is switched does not have the cluster group channel, the core network issues a cluster context modification flow of the group, and the target base station initiates an establishment flow of the cluster group call channel of the target cell after receiving the modification message. The core network sends a cluster paging message to inform the cell of cluster group service establishment. And then, aiming at the calling UE, initiating the establishment flow of the cluster calling bearer.

If the target base station and the target cell to which the UE is switched have the cluster channel of the cluster group, the core network initiates the establishment flow of the cluster calling bearer for the calling UE.

Under the three conditions, the successful switching between the UE base stations can be realized through the steps, and the UE in the group can continue the cluster group service in the target cell.

The worst case is that, through the switching judgment of the source base station of the cluster main call UE, the base station which does not support the cluster service can be switched, and the cluster main call UE must perform the switching operation due to the signal deterioration, and only one base station which does not support the cluster service can be selected according to the priority list for switching. In this case, after the UE reaches the target cell, since the target base station to which the UE is handed over does not support the trunking service, the corresponding trunking main call service is only forced to be terminated, which finally results in a handover failure.

Correspondingly, on the target base station side to which the cluster main call UE needs to be switched, referring to fig. 2, an embodiment of the present invention provides a method for deciding handover of the cluster main call UE, including:

s201, a target base station of UE needing to be switched among base stations determines whether the target base station supports information of trunking services;

s202, the target base station sends the information to the source base station.

When the target base station needs to interact with other base stations to determine whether the target base station supports the information of the trunking service, the target base station interacts with other base stations to determine whether the target base station supports the information of the trunking service by adding an IE in a Setup Response message and/or an eNB Configuration Transfer message, wherein the IE is used for indicating whether the target base station supports the information of the trunking service, and at the moment, the target base station can determine whether the target base station supports the information of the trunking service.

Preferably, the handover decision method further includes: and the target base station acquires the information whether the source base station of the UE supports the trunking service.

Preferably, the obtaining, by the target base station, information whether the source base station of the UE supports the trunking service specifically includes the following two situations:

(1) when an X2 interface exists between the target base station and the source base station, the target base station receives a Setup Request message sent by the source base station, and acquires information whether the source base station supports the trunking service.

Wherein, the Setup Request message carries capability information whether the source base station supports Trunking service (Trunking If Support). I.e. adding message attributes (IE/Group) on the basis of the prior art, the definition of the IE/Group can be seen from table 5.

TABLE 5

(2) When there is no X2 interface between the target base station and the source base station, the target base station receives an MME Configuration conversion MME Configuration Transfer message sent by a mobility management entity MME, and acquires information of whether the source base station supports the trunking service from the MME, where the information of whether the source base station supports the trunking service is acquired by the MME through a base station Configuration conversion eNB Configuration Transfer message sent by the source base station and carried in the MME Configuration conversion eNB Configuration Transfer message.

Wherein, the eNB Configuration Transfer message and the MME Configuration Transfer message respectively carry capability information whether the source base station supports a Trunking service (trunk If Support). I.e. adding message attributes (IE/Group) on the basis of the prior art, the definition of the IE/Group can be seen from table 6.

TABLE 6

Preferably, the target base station sends the information whether the target base station supports the trunking service to the source base station, and specifically includes two cases:

(1) when there is an X2 interface between the target base station and the source base station, the target base station sends the information whether the target base station supports the trunking service to the source base station by establishing a Response Setup Response message.

Wherein, the Setup Response message carries capability information whether the target base station supports Trunking service (Trunking If Support). I.e. adding message attributes (IE/Group) on the basis of the prior art, the definition of the IE/Group can be seen from table 7.

TABLE 7

(2) When no X2 interface exists between the target base station and the source base station, the target base station sends the information whether the target base station supports the trunking service to a Mobility Management Entity (MME) through a base station Configuration conversion eNB Transfer message, and the MME sends the information whether the target base station supports the trunking service to the source base station through an MME Configuration conversion MME Transfer message.

Wherein, the eNB Configuration Transfer message and the MME Configuration Transfer message respectively carry capability information whether the target base station supports Trunking service (trunk If Support). I.e. adding message attributes (IE/Group) on the basis of the prior art, the definition of the IE/Group can be seen from table 8.

TABLE 8

Preferably, the handover method further includes: and the target base station acquires the group to which the UE belongs and the indication information of whether the UE is the calling UE from a Mobility Management Entity (MME).

Preferably, the target base station obtains, from a mobility management entity MME, the group to which the UE belongs and the indication information of whether the UE is a calling UE, specifically including the following two situations:

(1) when the UE performs X2 handover between base stations, the target base station acquires a group to which the UE belongs and indication information of whether the UE is a calling UE from the MME by a path switch Request acknowledgement PathSwitch acknowledgement message.

Wherein, the Path Switch Request acknowledgement message carries the Group identifier (trunk Group ID) of the UE and information of whether to call the UE (if Original call). I.e. adding message attributes (IE/Group) on the basis of the prior art, the definition of the IE/Group can be seen from table 9.

TABLE 9

(2) When the UE performs S1 handover between base stations, the target base station acquires a group to which the UE belongs and indication information whether the UE is a calling UE from the MME through a handover request HandoverRequest message.

Wherein, the Handover Request message carries the group identifier (TrunkingGroup ID) of the UE and information of whether to call the UE (if Original call). I.e. adding message attributes (IE/Group) on the basis of the prior art, the definition of the IE/Group can be seen from table 10.

Watch 10

On the MME side, referring to fig. 3, an embodiment of the present invention provides a handover decision method for a group call UE device UE, including:

s301, a mobility management entity MME determines that indication information of whether a target base station which the UE needs to be switched supports trunking services needs to be sent to a source base station of the UE;

s302, the MME sends indication information of whether the target base station supports the trunking service to the source base station.

The method includes that a mobility management entity MME determines that indication information whether a target base station to which the UE needs to be switched supports a trunking service needs to be sent to a source base station of the UE, and when the source base station of the UE determines that inter-base station switching needs to be performed and a switching decision is made, the mobility management entity MME determines that indication information whether the target base station to which the UE needs to be switched supports the trunking service needs to be sent to the source base station of the UE.

Wherein, the eNB Configuration Transfer message and the MME Configuration Transfer message respectively carry capability information whether the target base station supports Trunking service (trunk If Support). I.e. adding message attributes (IE/Group) on the basis of the prior art, the definition of the IE/Group can be seen from table 11.

TABLE 11

Preferably, the handover decision method further includes:

Wherein, the eNB Configuration Transfer message and the MME Configuration Transfer message respectively carry capability information whether the source base station supports a Trunking service (trunk If Support). I.e. adding message attributes (IE/Group) on the basis of the prior art, the definition of the IE/Group can be seen from table 12.

TABLE 12

Preferably, the handover decision method further includes:

Preferably, the sending, by the MME, the group to which the cluster-based paging UE belongs and the indication information of whether the UE is the paging-based UE to the source base station specifically include: and the MME sends the group to which the UE belongs and the indication information of whether the UE is the calling UE to the source base station through a radio access bearer establishment Request E-RAB Setup Request message.

Wherein, the E-RAB Setup Request message carries the group identifier (TrunkingGroup ID) of the UE and information of whether to call the UE (if Original call). I.e. adding message attributes (IE/Group) on the basis of the prior art, the definition of the IE/Group can be seen from table 13.

Watch 13

Preferably, the MME sends the group to which the cluster-based paging UE belongs and the indication information of whether the UE is the paging UE to the target base station, specifically including the following two cases:

(1) when the UE performs X2 handover between base stations, the MME sends a group to which the UE belongs and indication information of whether the UE is a calling UE to the target base station through a path switching Request confirmation PathSwitch Request acknowledgement message.

Wherein, the Path Switch Request acknowledgement message carries the Group identifier (trunk Group ID) of the UE and information of whether to call the UE (if Original call). I.e. adding message attributes (IE/Group) on the basis of the prior art, the definition of the IE/Group can be seen from table 14.

TABLE 14

(2) When the UE performs S1 Handover between base stations, the MME sends a group to which the UE belongs and indication information of whether the UE is a calling UE to the target base station through a Handover Request message.

Wherein, the Handover Request message carries the group identifier (TrunkingGroup ID) of the UE and information of whether to call the UE (if Original call). I.e. adding message attributes (IE/Group) on the basis of the prior art, the definition of the IE/Group can be seen from table 15.

Watch 15

The following describes a device corresponding to the above handover decision method for the group calling user equipment UE.

Referring to fig. 4, on a source base station side of a cluster calling UE, a handover decision device for a cluster calling user equipment UE according to an embodiment of the present invention includes:

a determining unit 11, configured to determine whether a target base station to be switched supports a trunking service when it is determined that a trunking main call UE needs to perform switching between a source base station and a target base station, and when the apparatus is used as the source base station of the UE;

and an executing unit 12, configured to perform inter-base station handover operation on the UE according to the determination result.

Preferably, when the determining unit 11 determines whether the target base station to be switched supports the trunking service, it is specifically configured to:

Preferably, the judging unit 11 is further configured to: and sending the information whether the source base station supports the trunking service to the target base station.

Preferably, when the determining unit 11 sends the information whether the source base station supports the trunking service to the target base station, the determining unit is specifically configured to:

Preferably, the judging unit 11 is further configured to:

Preferably, when the determining unit 11 acquires, from the mobility management entity MME, the group to which the UE belongs and the indication information of whether the UE is the main call UE, the determining unit is specifically configured to:

The specific inter-base station handover operation process executed by the execution unit 12 has been described in detail in the above corresponding method, and is not described herein again.

Referring to fig. 5, on a target base station side of a cluster calling UE, a handover decision device for the cluster calling UE according to an embodiment of the present invention includes:

a determining unit 21, configured to determine, when the apparatus is a target base station of a UE that needs to perform inter-base station handover, whether the target base station supports information of a trunking service;

a sending unit 22, configured to send the information to the source base station.

Preferably, the determining unit 21 is further configured to: and acquiring information whether the source base station of the UE supports the trunking service.

Preferably, when the determining unit 21 obtains the information whether the source base station of the UE supports the trunking service, it is specifically configured to:

Preferably, the sending unit 22 is specifically configured to:

Preferably, the determining unit 21 is further configured to:

Preferably, when the determining unit 21 serves as the source base station of the UE, the determining unit 21 is further configured to determine whether the target base station to be switched supports the trunking service when it is determined that the trunking main call UE needs to perform switching between the source base station and the target base station, and perform inter-base station switching operation on the UE according to a determination result.

Wherein, when the apparatus is used as a source base station of the UE, the determining unit 21 may be further configured to: the detailed description of the determining unit 11 and the executing unit 12 in the corresponding apparatus provided in the embodiment of the present invention may specifically refer to the source base station side of the group calling UE, and will not be described herein again. That is to say, the base station provided in the embodiment of the present invention may have the function of the source base station described in the embodiment of the present invention, and perform corresponding operations as the source base station of the UE, or may have the function of the target base station described in the embodiment of the present invention, and perform corresponding operations as the target base station of the UE.

On the side of the mobility management entity MME, referring to fig. 6, a handover decision device for a group call user equipment UE according to an embodiment of the present invention includes:

a determining unit 31, configured to determine that it is required to send, to a source base station of the UE, indication information of whether a target base station to which the UE needs to be switched supports trunking services;

a sending unit 32, configured to send, to the source base station, indication information indicating whether the target base station supports the trunking service.

Preferably, the sending unit 32 is specifically configured to:

Preferably, the determining unit 31 is further configured to:

Preferably, when the determining unit 31 sends the indication information of whether the source base station supports the trunking service to the target base station, it is specifically configured to:

Preferably, the sending unit 32 is further configured to:

Preferably, when the sending unit 32 sends the group to which the cluster-based paging UE belongs and the indication information of whether the UE is the paging UE to the source base station, the sending unit is specifically configured to:

Each of the above units may be implemented by a physical device such as a control processor having functions of determining, transmitting, and the like.

In summary, when a source base station of a cluster calling UE determines that the UE needs to perform inter-base station handover, the source base station determines whether a target base station to be handed over supports a cluster service; and the source base station performs inter-base station switching operation on the UE according to the judgment result. Therefore, the cluster calling UE can be switched to the base station supporting the cluster service, the condition that the cluster calling service cannot be carried out due to the fact that the UE is switched to the base station not supporting the cluster service is avoided, the probability that the cluster calling UE can be successfully switched to the base station supporting the cluster function is improved, the cluster group service can be continuously carried out on the UE in the group in the target cell, and the stability of the group service is improved.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A switching decision method for a cluster calling User Equipment (UE), the method is characterized in that:

when a source base station of cluster calling UE determines that the UE is the cluster calling UE and the UE needs to perform inter-base station switching, the source base station judges whether a target base station to be switched supports cluster services;

the source base station performs inter-base station switching operation on the UE according to the judgment result;

the method for determining whether the target base station to be switched supports the trunking service by the source base station specifically includes:

or, when there is no X2 interface between the source base station and the target base station, the source base station receives an MME Configuration conversion Transfer message sent by a mobility management entity MME, and obtains capability information of whether the target base station supports the trunking service, and determines whether the target base station supports the trunking service according to the capability information; the information indicating whether the target base station supports the trunking service is acquired by the MME through a base station Configuration Transfer message sent by the target base station and carried in the MME Configuration Transfer message.

2. The method of claim 1, further comprising:

the source base station sends information whether the source base station supports the trunking service to the target base station; the sending, by the source base station, information whether the source base station supports the trunking service to the target base station specifically includes:

the source base station sends information whether the source base station supports the trunking service to the target base station by establishing a Request Setup Request message, wherein the Setup Request message carries capability information whether the source base station supports the trunking service.

3. The method of claim 1, further comprising:

the source base station acquires a group to which the UE belongs and indication information of whether the UE is a calling UE from a Mobility Management Entity (MME); the method for acquiring, by the source base station, the group to which the UE belongs and the indication information of whether the UE is the caller UE from the mobility management entity MME specifically includes:

4. A switching decision method for a cluster calling User Equipment (UE), the method is characterized in that:

the target base station of the UE needing to be switched among the base stations determines whether the target base station supports the information of the trunking service; the UE is a cluster calling UE;

the target base station sends the information to a source base station;

the sending, by the target base station, the information to the source base station specifically includes:

5. The method of claim 4, further comprising:

and the target base station acquires the information whether the source base station of the UE supports the trunking service.

6. The method according to claim 5, wherein the obtaining, by the target base station, information on whether the source base station of the UE supports the trunking service specifically includes:

7. The method of claim 4, further comprising:

and the target base station acquires the group to which the UE belongs and the indication information of whether the UE is the calling UE from a Mobility Management Entity (MME).

8. The method of claim 7, wherein the obtaining, by the target base station, the group to which the UE belongs and the indication information of whether the UE is a calling UE from a mobility management entity MME specifically includes:

when the UE carries out X2 handover between base stations, the target base station confirms a Path switch request acknowledgement message to acquire a group to which the UE belongs and indication information of whether the UE is a calling UE from the MME through a Path switching request;

9. A switching decision method for a cluster calling User Equipment (UE), the method is characterized in that:

a mobility management entity MME determines that indication information of whether a target base station to which the UE needs to be switched supports trunking services needs to be sent to a source base station of the UE; the UE is a cluster calling UE;

the MME sends indication information of whether the target base station supports the trunking service to the source base station;

wherein, the sending, by the MME, the indication information of whether the target base station supports the trunking service to the source base station specifically includes:

10. The method of claim 9, further comprising:

11. The method according to claim 10, wherein the sending, by the MME, the indication information of whether the source base station supports the trunking service to the target base station specifically includes:

12. The method of claim 9, further comprising:

13. The method of claim 12, wherein the MME sends, to the source base station, indication information indicating a group to which the group-originated UE belongs and whether the UE is a group-originated UE, specifically comprising:

14. The method of claim 12, wherein the MME sending to the target base station the group to which the cluster-based paging UE belongs and the indication information of whether the UE is a paging-based UE, specifically comprises:

15. A handover decision device for a group call user equipment UE, the device comprising:

the execution unit is used for carrying out switching operation between the base stations on the UE according to the judgment result;

wherein, when the determining unit determines whether the target base station to be switched supports the trunking service, it is specifically configured to:

when an X2 interface exists between the source base station and the target base station, sending a Setup request message to the target base station, then receiving a Setup Response message sent by the target base station, acquiring capability information of whether the target base station supports the trunking service, and judging whether the target base station supports the trunking service according to the capability information;

16. The apparatus of claim 15, wherein the determining unit is further configured to:

and sending the information whether the source base station supports the trunking service to the target base station.

17. The apparatus of claim 16, wherein when the determining unit sends the information about whether the source base station supports the trunking service to the target base station, the determining unit is specifically configured to:

18. The apparatus of claim 15, wherein the determining unit is further configured to:

19. The apparatus of claim 18, wherein the determining unit, when acquiring, from a mobility management entity MME, the group to which the UE belongs and the indication information of whether the UE is a calling UE, is specifically configured to:

20. A handover decision device for a group call user equipment UE, the device comprising:

a determining unit, configured to determine, when the apparatus is a target base station of a UE that needs to perform inter-base station handover, whether the target base station supports information of a trunking service; the UE is a cluster calling UE;

a sending unit, configured to send the information to a source base station;

wherein the sending unit is specifically configured to:

21. The apparatus of claim 20, wherein the determining unit is further configured to:

and acquiring information whether the source base station of the UE supports the trunking service.

22. The apparatus of claim 21, wherein when the determining unit obtains the information whether the source base station of the UE supports the trunking service, it is specifically configured to:

23. The apparatus of claim 20, wherein the determining unit is further configured to:

24. The apparatus of claim 23, wherein the determining unit, when acquiring, from a mobility management entity MME, the indication information of the group to which the UE belongs and whether the UE is a calling UE, is specifically configured to:

25. The apparatus according to any of claims 20-24, further comprising a determining unit and an executing unit in the apparatus according to any of claims 15-19.

26. A handover decision device for a group call user equipment UE, the device comprising:

a determining unit, configured to determine that indication information indicating whether a target base station to which the UE needs to be switched supports the trunking service needs to be sent to a source base station of the UE; the UE is a cluster calling UE;

a sending unit, configured to send, to the source base station, indication information indicating whether the target base station supports the trunking service;

wherein the sending unit is specifically configured to:

sending an MME Configuration Transfer message to the source base station; wherein the MMEConfiguration Transfer message carries the information for indicating whether the target base station supports the trunking service.

27. The apparatus of claim 26, wherein the determining unit is further configured to:

28. The apparatus of claim 27, wherein when the determining unit sends the indication information of whether the source base station supports the trunking service to the target base station, the determining unit is specifically configured to:

sending an MME Configuration Transfer message to the target base station; wherein the MMEConfiguration Transfer message carries the information for indicating whether the source base station supports the trunking service.

29. The apparatus of claim 26, wherein the sending unit is further configured to:

30. The apparatus of claim 29, wherein the sending unit, when sending the group to which the group-originated UE belongs and the indication information of whether the UE is a originated UE to the source base station, is specifically configured to:

31. The apparatus of claim 29, wherein the sending unit, when sending the group to which the group-originated UE belongs and the indication information of whether the UE is a originated UE to the target base station, is specifically configured to: