WO2014059607A1 - 群组区域管理方法、设备及系统 - Google Patents

群组区域管理方法、设备及系统 Download PDF

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Publication number
WO2014059607A1
WO2014059607A1 PCT/CN2012/083041 CN2012083041W WO2014059607A1 WO 2014059607 A1 WO2014059607 A1 WO 2014059607A1 CN 2012083041 W CN2012083041 W CN 2012083041W WO 2014059607 A1 WO2014059607 A1 WO 2014059607A1
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WIPO (PCT)
Prior art keywords
list
request message
multimedia broadcast
multicast service
broadcast multicast
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PCT/CN2012/083041
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English (en)
French (fr)
Inventor
谷蓉婷
文华
朱佥
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201280002445.2A priority Critical patent/CN103190162B/zh
Priority to PCT/CN2012/083041 priority patent/WO2014059607A1/zh
Priority to EP12886551.6A priority patent/EP2894934B1/en
Priority to RU2015118326A priority patent/RU2624579C2/ru
Publication of WO2014059607A1 publication Critical patent/WO2014059607A1/zh
Priority to US14/688,089 priority patent/US20150223030A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/08—User group management
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/189—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast in combination with wireless systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/50—Address allocation
    • H04L61/5069—Address allocation for group communication, multicast communication or broadcast communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/30—Resource management for broadcast services
    • 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

Definitions

  • the present application relates to the field of communications, and in particular, to a group area management method, device, and system.
  • Cluster communication uses a group for multiple users. In each group session, only one user in the group becomes the main speaker, and other users are the mode of the audience. In this mode, users in the group belonging to the same base station (cell) can share the same downlink channel, which can greatly save wireless resources, and thus has been widely used in government, energy, public security, railway and other departments.
  • TD-SCDMA Time Division-Synchronous Code Division Multiple Access
  • LTE Long Term Evolution
  • LTE-based cluster communication design is divided into two categories according to whether there are restrictions on the group call area.
  • One is based on fixed area cluster communication.
  • the base station (cell) covered by the cluster communication based on the fixed area is unchanged.
  • the members of the group that have joined the cluster when opening an account can only perform clustering in the cell covered by the limited base station.
  • Communication; the other is cluster communication based on mobile area.
  • the members in the group that join the cluster are determined. However, the positions of the members in the group can be moved at will.
  • the members in the group can be clustered within the range reachable by the network.
  • Communication that is, the base station (cell) to which the members of the group belong when calling, is not limited.
  • the cluster communication system must know which base stations (cells) the cluster communication is to be able to determine which base stations obtain cluster communication resources, thereby performing cluster communication, that is, group area management. Therefore, to implement LTE-based cluster communication, First, solve the regional management problem of the group in both cases.
  • the area management involving groups is mainly group paging, group call notification, group resource allocation, and group switching.
  • the prior art has not provided any LTE-based group area management method.
  • the technical problem to be solved by the present application is to provide a group area management method, device and system, which can solve the group area management problem based on LTE.
  • the first aspect of the present application provides a group area management method, including the steps of: receiving a multicast address generated by a multimedia broadcast multicast service gateway; and packing the multicast address and the area list into And the multimedia broadcast multicast service session start request message is sent to the multi-cell/multicast coordination entity (MCE), so that the MCE searches for the corresponding base station according to the area list, And sending a multimedia broadcast multicast service session start request message to the corresponding base station, so that the base station can join the multicast address, thereby implementing group area management.
  • MCE multi-cell/multicast coordination entity
  • the group identifier sent by the cluster management unit is received; the group identifier is encapsulated into a multimedia broadcast multicast service session start request message, and sent to the MCE to provide The MCE sends the group identifier to the user equipment in the cell by using the base station, so that the user equipment determines whether to establish a connection with the base station.
  • the step of encapsulating the multicast address and the area list into the multimedia broadcast multicast service session start request message includes the following steps: receiving, sent by the cluster management unit A cell list, and the cell list is used as a region list.
  • the step of encapsulating the multicast address and the area list into the multimedia broadcast multicast service session start request message includes the following steps: receiving, sent by the cluster management unit a member list; querying the status of the member according to the member list, and generating a cell list according to the cell in which the member of the connected state is located, and generating a tracking area list according to the tracking area where the member in the idle state is located, and the cell list and the tracking The zone list is used as a list of zones.
  • the querying the status of the member according to the member list, and generating a cell list according to the cell in which the member of the connected state is located, and according to the idle state includes the following steps: after receiving the member list, immediately query the status of the member according to the member list, and generate a cell list according to the cell in which the member of the connected state is located, and according to the idle state
  • the tracking area in which the member is located generates a list of tracking areas.
  • the querying the status of the member according to the member list, and generating the cell list according to the cell in which the member of the connected state is located, and according to the idle state includes the following steps: querying the status of the member according to the member list, and determining whether all members are in the connected state; if all the members are in the connected state, according to the cell in which the member of the connected state is located Generate a list of cells.
  • the generating a cell list according to the cell in which the member of the connected state is located includes the following steps: determining whether the time exceeds the set time; if the set time is exceeded, the status of the member is queried according to the member list, and according to the cell where the member of the connected state is located A cell list is generated and a tracking area list is generated according to the tracking area in which the members of the idle state are located.
  • the step of sending the multimedia broadcast multicast service session start request message to the MCE includes: determining whether the area list has occurred Updating; if the area list is updated, the updated area list is encapsulated into a multimedia broadcast multicast service session update request message, and the multimedia broadcast multicast service session update request message is sent to the MCE .
  • the step of determining whether the cell list and the tracking area list have been updated further includes the step of: querying whether a status of the member occurs Change; if the state of the member has changed, it is determined whether the list of regions has been updated.
  • the method before the step of determining whether the cell list and the tracking area list are updated, the method further includes the following steps: when receiving the user equipment When the handover request message is sent, it is determined whether the user equipment is the last member of the group in the belonging base station; if the user equipment is the last member of the group in the belonging base station, the area list is updated.
  • the method before the step of determining whether the cell list and the tracking area list are updated, the method further includes the following steps: if the forwarding is received Relocating the request message, determining whether the user equipment is the first member of the group of the target cell; if it is the first member of the group of the target cell, updating the area list.
  • a second aspect provides a group area management method, including the steps of: receiving a multimedia broadcast multicast service session start request message sent by a mobility management entity, where the multimedia broadcast multicast service session start request message is Carrying the area list and the multicast address; reading out the area list from the multimedia broadcast multicast service session start request message; searching for the corresponding base station according to the area list, and the multimedia broadcast multicast service session start request message Sending to the base station, so that the base station can be added to the multicast address, thereby implementing group area management.
  • the step of reading the area list from the multimedia broadcast multicast service session start request message includes: reading out the cell list from the multimedia broadcast multicast service session start request message, and Tracking area list; the step of searching for a corresponding base station according to the area list includes: searching for a base station belonging to the cell list according to the cell list, and searching for a base station belonging to the tracking area list according to the tracking area list.
  • the multimedia broadcast multicast service session update request message sent by the mobility management entity is received, and the multimedia broadcast service session update is updated from the multimedia broadcast service
  • the updated area list is read out in the request message.
  • a third aspect provides a mobility management entity, including: a receiving module, a packaging module, and a sending module, where the receiving module is configured to receive a multicast address generated by a multimedia broadcast multicast service gateway, where the receiving module The multicast address is sent to the encapsulating module; the encapsulating module is configured to receive the multicast address, and encapsulate the multicast address and the area list into a multimedia broadcast multicast service session start request message, where the encapsulation module And sending, by the sending module, the multimedia broadcast multicast service session start request message, where the multimedia broadcast multicast service session starts Sending, by the MCE, the MCE to the corresponding base station according to the area list, and sending the multimedia broadcast multicast service session start request message to the corresponding base station, so that the base station can join the group Broadcast in the address to achieve group area management.
  • the receiving module is further configured to receive a group identifier sent by the cluster management unit, where the receiving module sends the group identifier to the encapsulating module;
  • the module is further configured to encapsulate the group identifier into a multimedia broadcast multicast service session start request message, where the encapsulating module sends the multimedia broadcast multicast service session start request message to the sending module;
  • identifying, for the user equipment determining whether to establish a connection with the base station.
  • the receiving module is further configured to receive a cell list sent by the cluster management unit, and use the cell list as a region list.
  • the mobility management entity further includes a generating module, where the receiving module is further configured to receive a member list sent by the cluster management unit, where the receiving module sends the member Sending the list to the generating module; the generating module is configured to receive the member list, query the status of the member according to the member list, and generate a cell list according to the cell in which the member of the connected state is located, and the member according to the idle state
  • the tracking area generates a tracking area list, and uses the cell list and the tracking area list as a region list.
  • the generating module is further configured to: after receiving the member list, immediately query the status of the member according to the member list, and according to the connection state The cell in which the member is located generates a cell list and generates a tracking area list according to the tracking area in which the member of the idle state is located.
  • the mobility management entity further includes a first determining module, where the first determining module is configured to query a member according to the member list. a state, and determining whether all the members are in the connected state, the first determining module sending the first determining result to the generating module; the generating module is further configured to receive the first determining result, at all When all the members are in the connected state, a cell list is generated according to the cell in which the member of the connected state is located.
  • the mobility management entity further includes a second determining module, where the second determining module is configured to determine whether the setting is exceeded The second determining module sends the second determining result to the generating module.
  • the generating module is further configured to receive the second determining result, and when the set time is exceeded, query the member according to the member list. The state, and generates a cell list according to the cell in which the member of the connected state is located, and generates a tracking area list according to the tracking area where the member of the idle state is located.
  • the mobility management entity further includes a third determining module, where the third determining module is configured to determine whether the area list is An update occurs, the third determining module sends a third determination result to the encapsulating module; the encapsulating module is further configured to receive a third determining result, and the updated region list is updated when the area list is updated.
  • the encapsulating module Encapsulating into the multimedia broadcast multicast service session update request message, the encapsulating module sends the multimedia broadcast multicast service session update request message to the sending module; the sending module is further configured to receive the multimedia broadcast multicast The service session update request message sends the multimedia broadcast multicast service session update request message to the MCE.
  • the mobility management entity further includes a query module, where the query module is configured to query whether a state of the member has changed, The query module sends the query result to the third determining module.
  • the third determining module is further configured to receive the query result, and determine, when the state of the member changes, whether the region list is updated.
  • the mobility management entity further includes a fourth determining module, where the fourth determining module is configured to receive the user equipment When the handover request message is sent, it is determined whether the user equipment is the last member of the group in the belonging base station, and the fourth determining module sends the fourth determination result to the update module; the update module is further used to Receiving the fourth determination result, updating the area list when it is the last member of the group in the belonging base station.
  • the mobility management entity further includes a fifth determining module, where the fifth determining module is configured to receive the forwarding weight a location request message, determining whether the user equipment is the first member of the group of the target cell, the fifth determining module sending the fifth determination result to the update module, and the updating module is further configured to receive the fifth As a result of the judgment, the region list is updated when it is the first member of the group of the target cell.
  • the fourth aspect provides an MCE, including a receiving module, a reading module, a searching module, and a sending module, where the receiving module is configured to receive a multimedia broadcast multicast service session start request message sent by the mobility management entity, where The receiving module sends the multimedia broadcast multicast service session start request message to the readout module, where the multimedia broadcast multicast service session start request message carries a zone list and a multicast address; the readout module And receiving, by the multimedia broadcast multicast service session start request message, the area list from the multimedia broadcast multicast service session start request message, where the reading module sends the area list to the search module;
  • the searching module is configured to receive the area list, and search for a corresponding base station according to the area list, where the searching module sends the found base station to the sending module, and the sending module is configured to receive the found base station and Transmitting the multimedia broadcast multicast service session start request message to the base station to enable The base station can be added to the multicast address in order to achieve regional management group.
  • the reading module is further configured to read out a cell list and a tracking area list from a multimedia broadcast multicast service session start request message, where the reading module sets the cell list And the tracking area list is sent to the searching module; the searching module is further configured to receive the cell list and the tracking area list, search for a base station that belongs to the cell list according to the cell list, and search according to the tracking area list. A base station belonging to the tracking area list.
  • the receiving module is further configured to receive a multimedia broadcast multicast service session update request message sent by the mobility management entity, where the receiving The module sends the multimedia broadcast multicast service session update request message to the readout module; the readout module is further configured to receive the multimedia broadcast multicast service session update request message, from the multimedia broadcast multicast service The updated region list is read out in the session update request message.
  • a fifth aspect provides a mobility management entity, including: a receiver, a processor, a transmitter, and a memory, where the receiver is configured to receive a multicast address generated by a multimedia broadcast multicast service gateway, the receiver Transmitting the multicast address to the processor; the processor is configured to receive the multicast address, and encapsulate the multicast address and a region list into a multimedia broadcast multicast service session start request message, where the processing
  • the device is configured to send the multimedia broadcast multicast service session start request message to the sender;
  • the sender is configured to receive the multimedia broadcast multicast service session start request message, start the multimedia broadcast multicast service session Sending, by the MCE, the MCE to the corresponding base station according to the area list, and sending the multimedia broadcast multicast service session start request message to the corresponding base station, so that the base station can join the group In the broadcast address, thereby implementing group area management;
  • the memory is used to store routines and data.
  • the receiver is further configured to receive a group identifier sent by a cluster management unit, where the receiver sends the group identifier to the processor;
  • the device is further configured to encapsulate the group identifier into a multimedia broadcast multicast service session start request message, where the processor sends the multimedia broadcast multicast service session start request message to the sender; Receiving the multimedia broadcast multicast service session start request message, and sending the message to the MCE, so that the MCE sends the group identifier to the user equipment in the cell by using the base station, so that the user equipment determines whether The base station establishes a connection.
  • the receiver is further configured to receive a cell list sent by the cluster management unit, and use the cell list as a region list.
  • the receiver is further configured to receive a member list sent by the cluster management unit, where the receiver sends the member list to the processor;
  • the device is configured to receive the member list, query the status of the member according to the member list, generate a cell list according to the cell where the member of the connected state is located, and generate a tracking area list according to the tracking area where the member in the idle state is located, and generate the tracking area list, and
  • the list and the tracking area list are used as a list of areas.
  • the processor is further configured to: after receiving the member list, immediately query a status of the member according to the member list, And generating a cell list according to the cell where the member of the connected state is located, and generating a tracking area list according to the tracking area where the member of the idle state is located.
  • the processor is further configured to: determine, according to the status of the member list, whether all members are in the connected state, at all When all the members are in the connected state, a cell list is generated according to the cell in which the member of the connected state is located.
  • the processor is further configured to determine whether the set time is exceeded, and when the set time is exceeded, query according to the member list. The status of the member, and generates a cell list according to the cell in which the member of the connected state is located, and generates a tracking area list according to the tracking area where the member of the idle state is located.
  • the processor is further configured to determine whether an update occurs in the area list, and when the area list is updated, Encapsulating the updated region list into a multimedia broadcast multicast service session update request message, the processor sending the multimedia broadcast multicast service session update request message to the sender; the transmitter is further configured to receive the The multimedia broadcast multicast service session update request message is sent to the MCE by the multimedia broadcast multicast service session update request message.
  • the processor is further configured to query whether a state of the member has changed, and when the state of the member changes, the determining Whether the area list has been updated.
  • the processor is further configured to: when receiving the handover request message sent by the user equipment, determine whether the user equipment is The last member of the group within the associated base station updates the list of regions when it is the last member of the group within the associated base station.
  • the processor is further configured to: when receiving the forward relocation request message, determine whether the user equipment is the target cell The first member of the group updates the list of regions when it is the first member of the group of the target cell.
  • an MCE including a receiver, a processor, a transmitter, and a memory, where the receiver is configured to receive a multimedia broadcast multicast service session start request message sent by a mobility management entity, where the receiver Transmitting the multimedia broadcast multicast service session start request message to the processor, where the multimedia broadcast multicast service session start request message carries a zone list and a multicast address; the processor is configured to receive the a multimedia broadcast multicast service session start request message, reading a region list from the multimedia broadcast multicast service session start request message, searching for a corresponding base station according to the region list, and the processor searching the found base station to the Transmitting, the transmitter is configured to receive the found base station, and send the multimedia broadcast multicast service session start request message to the base station, so that the base station can be added to the multicast address, Thereby group area management is implemented; the memory is used to store routines and data.
  • the processor is further configured to: read a cell list and a tracking area list from a multimedia broadcast multicast service session start request message, and search for the cell list according to the a base station of the cell list, and searching for a base station belonging to the tracking area list according to the tracking area list.
  • the receiver is further configured to receive a multimedia broadcast multicast service session update request message sent by the mobility management entity, where the receiving The device sends the multimedia broadcast multicast service session update request message to the processor; the processor is further configured to receive the multimedia broadcast multicast service session update request message, and update the multimedia broadcast service session from the multimedia broadcast service The updated area list is read out in the request message.
  • the seventh aspect provides a group area management system, including a cluster management unit, a multimedia broadcast multicast service gateway, a mobility management entity, an MCE, and a base station, where the cluster management unit is respectively coupled to the multimedia broadcast multicast service gateway, The mobility management entity and the base station, the multimedia broadcast multicast service gateway is respectively coupled to the mobility management entity and the base station, the mobility management entity is respectively coupled to the MCE and the base station, the MCE is coupled to the base station, and the mobility management entity is any one of the foregoing The mobility management entity described in the item.
  • the MCE is the MCE of any one of the above.
  • the multicast address and the area list are encapsulated into the multimedia broadcast multicast service session start request message, and then the multimedia broadcast multicast service session start request message is sent to the multi-cell/multicast coordination entity, so that the multi-cell/multiple
  • the broadcast coordination entity can obtain the range of the base station (cell) participating in the cluster communication from the area list, and then find the corresponding base station through the multi-cell/multicast coordination entity, and send the multicast address to the base station, thereby making the base station Can be added to the multicast address to achieve group area management, and thus achieve cluster communication.
  • FIG. 1 is an interaction diagram of an embodiment of a group call method according to the present invention.
  • FIG. 2 is a flowchart of an embodiment of a group area management method according to the present invention.
  • FIG. 3 is a flowchart of another embodiment of a group area management method according to the present invention.
  • FIG. 5 is an interaction diagram of an embodiment of a group handover method area management according to the present invention.
  • FIG. 6 is a schematic structural diagram of an implementation manner of a mobility management entity according to the present invention.
  • FIG. 7 is a schematic structural diagram of another embodiment of a mobility management entity according to the present invention.
  • FIG. 8 is a schematic structural diagram of an embodiment of a multi-cell/multicast coordination entity according to the present invention.
  • FIG. 9 is a schematic structural diagram of still another embodiment of a mobility management entity according to the present invention.
  • FIG. 10 is a schematic structural diagram of another embodiment of a multi-cell/multicast coordination entity according to the present invention.
  • FIG. 1 is an interaction diagram of an embodiment of a group call method according to the present invention.
  • An embodiment of the group call method of the present invention relates to: a cluster management unit, a multimedia broadcast multicast service (MBMS, Multimedia) Broadcast Multicast Service) Gateway, Mobility Management Entity (MME, Mobility Management) Entity), Multi-cell/Multicast Coordination Entity (MCE, Multi-cell/Multicast Coordination) Entity), base station (eg, eNodeB), and user equipment (UE).
  • the interaction diagram of FIG. 1 is applicable to group paging based on cluster communication of a fixed area, and the UE joins a certain group when opening an account, and becomes a member of the group. Since the cluster communication based on the fixed area defines that the group can only perform cluster communication in the cell covered by the designated base station, the UE that is a member of the group must perform cluster communication in the cell covered by the designated base station. .
  • a member of the cell covered by the designated base station as a presenter proposes a group call request to the cluster management unit, and after receiving the group call request, the cluster management unit obtains the group identifier of the group, and Querying the cell list corresponding to the group call locally (because only the cluster communication can be performed in the cell covered by the designated base station, the address of the designated base station may be stored in the cluster management unit in advance), wherein, in the cell list The address of the base station corresponding to the group call is stored.
  • the cluster management unit encapsulates the group identity and the member list into a group call session request message and sends it to the MBMS gateway.
  • the MBMS gateway After receiving the group call session request message, the MBMS gateway generates a multicast address for the group, and encapsulates the multicast address, the group identifier, and the cell list into the group session start request message, and sends the message to the MME.
  • FIG. 2 is a flowchart of an embodiment of a group area management method according to the present invention.
  • An embodiment of the group area management method of the present invention includes the following steps:
  • the MME receives the cell list sent by the cluster management unit and the multicast address generated by the MBMS gateway.
  • the MME receives the group session start request message sent by the MBMS gateway, thereby obtaining the group identity and the cell list sent by the cluster management unit, and the multicast address generated by the MBMS gateway.
  • S202 The MME encapsulates the multicast address and the cell list into a multimedia broadcast multicast service session start request message.
  • the MME After obtaining the group identifier, the cell list, and the multicast address, the MME encapsulates the cell list as a region list together with the group identifier and the multicast address into the multimedia broadcast multicast service session start request message.
  • S203 The MME sends a multimedia broadcast multicast service session start request message to the MCE.
  • the MME After the MME encapsulates the multimedia broadcast multicast service session start request message, the MME sends the multimedia broadcast multicast service session start request message to the MCE.
  • FIG. 3 is a flowchart of another embodiment of the group area management method of the present invention.
  • Another embodiment of the group area management method of the present invention includes the following steps:
  • the MCE receives the multimedia broadcast multicast service session start request message sent by the MME.
  • the MCE reads the cell list from the multimedia broadcast multicast service session start request message.
  • the MCE After receiving the multimedia broadcast multicast service session start request message, the MCE reads the cell list from the multimedia broadcast multicast service session start request message.
  • the MCE searches for a corresponding base station according to the cell list, and sends a multimedia broadcast multicast service session start request message to the base station.
  • the MCE searches the base station on the cell list according to the cell list, and sends the multimedia broadcast multicast service session start request message (excluding the cell list) to all the base stations. Then, the MCE sends a multimedia broadcast multicast service session start response message to the MME, and informs the MME that the multimedia broadcast multicast service session start request message has been received.
  • the base station After receiving the multimedia broadcast multicast service session start request message sent by the MCE, the base station sends a multimedia broadcast multicast service session start response message to the MCE, and informs the MCE that the multimedia broadcast multicast service session start request message has been received. Then, the base station reads the group identifier and the multicast address from the multimedia broadcast multicast service session start request message. The base station encapsulates the group identity into a group paging message and sends it to all UEs in the cell. After receiving the multimedia broadcast multicast service scheduling information request sent by the MCE, the base station joins the multicast address, and sends a multimedia broadcast multicast service scheduling information response to the MCE, thereby establishing a tunnel communication channel. From then on, the data packet sent by the presenter can be sent to the designated base station through the channel of the cluster communication.
  • the UE in the cell covered by the designated base station receives the group paging message, and reads the group identifier from the group paging message, if the UE detects that the group identifier is a group identifier that the UE has. If a group is added, the group identifier corresponding to the group is obtained, and the UE establishes a connection with the base station, and receives the data packet sent by the presenter as the listener; if the UE detects that the group identifier is not The group logo is ignored.
  • the group call notification and the group resource allocation range of the cluster communication based on the fixed area are all predefined ranges. After the MME sends the predefined range to the MCE, the MCE performs the group call notification and the group resource allocation according to the predefined range. .
  • the handover procedure is the same as that of the original LTE system handover, but if the group handover exceeds the range included in the cell list, the handover will fail.
  • the multicast address and the area list are encapsulated into the multimedia broadcast multicast service session start request message, and then the multimedia broadcast multicast service session start request message is sent to the multi-cell/multicast coordination entity, so that the multi-cell/multiple
  • the broadcast coordination entity can obtain the range of the base station (cell) participating in the cluster communication from the area list, and then find the corresponding base station through the multi-cell/multicast coordination entity, and send the multicast address to the base station, thereby making the base station Can be added to the multicast address to achieve group area management, and thus achieve cluster communication.
  • FIG. 4 is an interaction diagram of another embodiment of the group call method of the present invention.
  • An embodiment of the group call method of the present invention relates to a cluster management unit, an MBMS gateway, an MME, an MCE, a base station belonging to a cell list, a base station belonging to a tracking area list, and a UE.
  • the interaction diagram of FIG. 4 is applicable to group paging based on cluster communication of the mobile area, and the UE joins a certain group when opening an account, and becomes a member of the group.
  • the cluster communication based on the mobile area is different from the above-described fixed area based cluster communication, and cluster communication is not required in the area covered by the designated base station (cell). In fact, cluster communication can be performed in the area covered by the LTE network.
  • a member in the group in the area covered by the LTE network as the presenter proposes a group call request to the cluster management unit, and after receiving the group call request, the cluster management unit obtains the group identifier of the group, and Locally query the information of all members of this group to get a list of members.
  • the cluster management unit encapsulates the group identity and the cell list into a group call session request message and sends it to the MBMS gateway.
  • the MBMS gateway After receiving the group call session request message, the MBMS gateway generates a multicast address for the group, and encapsulates the multicast address, the group identifier, and the member list into the group session start request message, and sends the message to the MME.
  • the MME After receiving the member list sent by the cluster management unit, the MME queries the member list according to the status of the member.
  • the MME can obtain the cell where the member is located, and the member is in the idle state (also called the offline state), the MME can only obtain the tracking area where the member is located (the tracking area usually includes multiple base stations)
  • the covered cell is generated, and the cell list belonging to the area list is generated according to the cell in which the member of the connected state is located, and the tracking area list belonging to the area list is generated according to the tracking area where the member in the idle state is located, and the cell list and the tracking area list are used as the area. List.
  • the MME after receiving the member list sent by the cluster management unit, the MME first generates an initial cell list and an initial tracking area list. For example, after receiving the member list, the MME immediately searches the member list according to the member list, and generates a tracking area list according to the cell cell list in which the member of the connected state is located and the tracking area in which the member in the idle state is located, where After receiving the member list, the MME does not go through any other steps in the shortest time that the MME can respond. In another implementation manner, after receiving the member list, the MME queries the status of the member to determine whether all members are in the connected state. If not all members are in the connected state, the MME waits until all members are in the connected state.
  • the MME Connected state; if all members are in the connected state, the MME generates a cell list according to the cell in which the member of the connected state is located.
  • the MME sets a timing time after receiving the member list, and determines whether the set time is exceeded. If the set time is not exceeded, the MME waits until the set time is exceeded; if the set time is exceeded, the MME queries the member's state according to the member list, and generates a cell list according to the cell in which the member of the connected state is located and according to the idle The tracking area in which the members of the state are located generates a list of tracking areas.
  • the MME encapsulates the group identity, the area list (including the cell list and the tracking area list), and the multicast address into the multimedia broadcast multicast service session start request message. After the MME encapsulates the multimedia broadcast multicast service session start request message, the MME sends the multimedia broadcast multicast service session start request message to the MCE.
  • the MME periodically queries whether the cell list and the tracking area list have been updated. For example, when a member of a group that originally belongs to the tracking area transitions from the idle state to the connected state, the MME needs to determine whether the region list has been updated. At this time, the MME queries whether the status of the member has changed, and determines that the status of the member has changed, so the MME needs to further determine whether the area list has been updated. If the member is the last member of the group in the tracking area, the area list is updated; otherwise, the area list is not updated; if the member is the first member of the group in the cell, the area list is updated Otherwise, the area list does not update. If the area list is updated, the MME encapsulates the updated area list into the multimedia broadcast multicast service session update request message and then transmits it to the MCE.
  • the MCE receives the multimedia broadcast multicast service session start request message
  • the cell list and the tracking area list are read from the multimedia broadcast multicast service session start request message, and the base station belonging to the cell list is searched according to the cell list, and according to the tracking The zone list finds the base stations belonging to the tracking zone list.
  • the MCE sends the multimedia broadcast multicast service session start request message (excluding the cell list and the tracking area list) to the found base station.
  • the MCE receives the multimedia broadcast multicast service session update request message, the MCE obtains the updated area list from the multimedia broadcast multicast service session update request message, and if the obtained base station in the updated cell list already exists, the MCE sends the base station to the base station.
  • the MCE sends a multimedia broadcast multicast service session start request message (excluding the cell list and the tracking area list) to the base station; if the acquired update is obtained The tracking area in the tracking list already exists, and the MCE does not perform any processing; if the tracking area in the obtained updated tracking area list does not exist, the MCE sends a multimedia broadcast multicast service session start request message to the base station in the tracking area ( Does not include cell list and tracking area list).
  • the base station that belongs to the cell list After receiving the multimedia broadcast multicast service session start request message sent by the MCE, the base station that belongs to the cell list sends a multimedia broadcast multicast service session start response message to the MCE, and informs the MCE that the multimedia broadcast multicast service session start request message has been received. Then, the base station reads the group identifier and the multicast address from the multimedia broadcast multicast service session start request message. The base station encapsulates the group identity into a group paging message and sends it to all UEs in the cell. After receiving the multimedia broadcast multicast service scheduling information request sent by the MCE, the base station joins the multicast address, and sends a multimedia broadcast multicast service scheduling information response to the MCE, thereby establishing a tunnel communication channel. From then on, the data packet sent by the presenter can be sent to the designated base station through the channel of the cluster communication.
  • the base station that belongs to the tracking area list After receiving the multimedia broadcast multicast service session start request message sent by the MCE, the base station that belongs to the tracking area list reads the group identifier from the multimedia broadcast multicast service session start request message, and encapsulates the group identifier into the group paging message. Transmitted to UEs in all cells in the tracking area. Then, the base station belonging to the tracking area list sends a multimedia broadcast multicast service session start response message to the MCE, informing the MCE that the multimedia broadcast multicast service session start request message has been received.
  • the UE in the connected state receives the group paging message, and reads the group identifier from the group paging message, if the UE detects that the group identifier is a group identifier that the UE has, (if the UE joins a certain group when opening an account)
  • the group obtains the group identifier corresponding to the group, and the UE establishes a connection with the base station belonging to the cell list, and receives the data packet sent by the presenter as the listener; if the UE detects that the group identifier is not the group that the group has The logo is ignored.
  • the UE in the idle state receives the group paging message, and reads the group identifier from the group paging message.
  • the UE If the UE detects that the group identifier is the group identifier that the group identifier has, the UE changes from the idle state to the connected state; if the UE If the group identifier is not detected by the group identifier, it will be ignored.
  • the scope of the group call notification of the cluster communication based on the mobile area is a collection of the cell list and the tracking area list, and the MME also performs area management, and then the MME sends the range of the group call notification to the MCE, and the MCE groups according to the scope of the group call notification.
  • the call notification is sent to the corresponding base station (cell).
  • the scope of the group resource allocation of the cluster communication based on the mobile area is the range included in the cell list, and the MME also performs area management, and then the MME sends the range of the group resource allocation to the MCE, and the MCE allocates the range according to the group resource allocation.
  • the corresponding base station (cell) allocates group resources.
  • FIG. 5 is an interaction diagram of an embodiment of a group handover method area management according to the present invention.
  • the subject at the time of interaction includes: a member (for example, a UE), a source base station, a target base station, a source MME, a target MME, a source MCE, and a target MCE.
  • a UE that is a member of the group sends an MR measurement report to the source base station. After receiving the MR measurement report, the source base station sends a handover request to the source MME. After receiving the handover request, the source MME determines whether the UE that needs to perform handover belongs to the base station. The last member of the group. If it is the last member of the group, the source MME updates the region list and sends a group region update message to the source MCE; if it is not the last member of the group, the source MME does not send the group region update message to the source MCE.
  • the MME needs to determine whether the area list has been updated, if the member in the connected state is covered by the original base station.
  • the area list does not update; if the member in the connected state moves from the range covered by the original base station to another base station not belonging to the cell list
  • the MME determines that the area list has been updated. If the source MCE receives the group area update message, the source MCE will send a resource release indication to the source base station. After receiving the resource release indication, the source base station releases the group resource and exits the multicast address.
  • the source base station If the handover fails, if the source base station has not received the new group area update message sent by the source MCE, the source base station ignores the new group area update message sent by the source MCE for the group; if the source base station has received the source The new group area update message sent by the MCE, but has not been officially sent to the members in the cell, and then the delivery is stopped; if the source base station has received the new group area update message sent by the source MCE, and has already issued the message For the members in the cell, the source base station immediately sends the previous group area update message to the members in the cell.
  • the source MME continues to send a forward relocation request message to the target MME, and after receiving the forward relocation request message, the target MME determines whether it is the first member of the group of the target cell, and if it is the first member of the group And the target MME updates the area list and sends a group area update message to the target MCE; if it is not the first member of the group, the target MME does not send the group area update message to the target MCE. If the target MCE receives the group area update message, the target MCE will send a resource allocation indication to the target base station. After receiving the resource allocation indication, the target base station obtains the group resource and joins the multicast address.
  • the target base station If the handover fails, if the target base station has not received the new group area update message sent by the target MCE, the target base station ignores the new group area update message sent by the target MCE for the group; if the target base station has received the target The new group area update message sent by the MCE, but has not been officially delivered to the members in the cell, and then the delivery is stopped; if the target base station has received the new group area update message sent by the target MCE, and has been delivered For the members in the cell, the target base station immediately delivers the previous group area update message to the members in the cell.
  • the geographical limitation of the cluster communication can be realized, and the members can perform cluster communication within the coverage of the LTE network, and the flexibility of the cluster communication is greatly provided.
  • FIG. 6 is a schematic structural diagram of an implementation manner of a mobility management entity according to the present invention.
  • the mobility management entity of this embodiment includes: a receiving module 601, a packaging module 602, and a sending module 603.
  • the receiving module 601 is configured to receive the multicast address generated by the multimedia broadcast multicast service gateway, and the receiving module 601 sends the multicast address to the encapsulating module 602.
  • the encapsulating module 602 is configured to receive the multicast address and encapsulate the multicast address and the area list into the multimedia broadcast multicast service session start request message, and the encapsulating module 602 is configured to send the multimedia broadcast multicast service session start request message to the sending module 603. .
  • the sending module 603 is configured to receive a multimedia broadcast multicast service session start request message, and send the multimedia broadcast multicast service session start request message to the multi-cell/multicast coordination entity, so that the multi-cell/multicast coordination entity searches according to the area list.
  • the corresponding base station sends the multicast address to the corresponding base station, so that the base station can join the multicast address, thereby implementing group area management.
  • the multicast address and the area list are encapsulated into the multimedia broadcast multicast service session start request message, and then the multimedia broadcast multicast service session start request message is sent to the multi-cell/multicast coordination entity, so that the multi-cell/multiple
  • the broadcast coordination entity can obtain the range of the base station (cell) participating in the cluster communication from the area list, and then find the corresponding base station through the multi-cell/multicast coordination entity, and send the multicast address to the base station, thereby making the base station Can be added to the multicast address to achieve group area management, and thus achieve cluster communication.
  • FIG. 7 is a schematic structural diagram of another embodiment of a mobility management entity according to the present invention.
  • the mobility management entity of the present embodiment includes: a receiving module 701, a first determining module 702, a second determining module 703, a generating module 704, a querying module 705, a third determining module 706, an updating module 707, and a fourth determining module 708.
  • the receiving module 701 is configured to receive the group identifier, the member list, and the multicast address generated by the multimedia broadcast multicast service gateway sent by the cluster management unit. For example, a member in the group in the area covered by the LTE network as the presenter proposes a group call request to the cluster management unit, and after receiving the group call request, the cluster management unit obtains the group identifier of the group. The information of all members of this group is queried locally to obtain a list of members. The cluster management unit encapsulates the group identity and the member list into a group call session request message and sends it to the MBMS gateway.
  • the MBMS gateway After receiving the group call session request message, the MBMS gateway generates a multicast address for the group, and encapsulates the multicast address, the group identifier, and the member list into the group session start request message, and sends and receives to the MME.
  • the module 701 receives the group session start request message to receive the group identifier, the member list, and the multicast address generated by the multimedia broadcast multicast service gateway sent by the cluster management unit.
  • the MME After receiving the group session start request message, the MME generates three types of initial area lists.
  • the MME In the first mode, after receiving the member list, the MME immediately calls the generating module 704 to generate an initial area list, where the MME immediately responds to the MME after receiving the member list without any other steps. The shortest time.
  • the MME determines, by the first determining module 702, whether all members are in the connected state. If not all members are in the connected state, the MME waits until all members are in the connected state; if all The members are all in the connected state, and the call generation module 704 generates a cell list according to the cell in which the members of the connected state are located, and uses the cell list as the area list.
  • the MME determines whether the time exceeds the set time by using the second determining module 703. If the set time is exceeded, the MME queries the member list to query the status of the member, and invokes the generating module 704 according to the member of the connected state.
  • the cell generates a cell list and generates a tracking area list according to the tracking area where the members of the idle state are located, and uses the cell list and the tracking area list as the area list.
  • the encapsulating module 710 is configured to encapsulate the multicast address and the generated area list into the multimedia broadcast multicast service session start request message, and send the multimedia broadcast multicast service session start request message to the sending module 711.
  • the query module 705 is configured to query whether the status of the member has changed, and the query module 705 sends the query result to the third determining module 706.
  • the third determining module 706 is configured to receive the query result, and determine whether the region list is updated when the status of the member changes. For example, when a member of a group that belongs to the tracking area transitions from the idle state to the connected state, the MME needs to determine whether the region list has been updated. At this time, the query module 705 queries whether the status of the member has changed. If the status of the member changes, the third determining module 706 needs to determine whether the area list has been updated.
  • the third determining module 706 determines that the area list is updated; otherwise, the third determining module 706 determines that the area list does not update; if the member is in the cell The first member of the group, the third determining module 706 determines that the area list is updated, otherwise the third determining module 706 determines that the area list does not update.
  • the update module 707 then updates the list of regions.
  • the calling encapsulation module 710 encapsulates the updated area list into the multimedia broadcast multicast service session update request message.
  • the sending module 711 is configured to receive the multimedia broadcast multicast service session start request message and the multimedia broadcast multicast service session update request message, and send the multimedia broadcast multicast service session start request message or the multimedia broadcast multicast service session update request message to the multi-cell/ The multicast coordination entity sends.
  • the MME acts as the source MME.
  • the MME invokes the fourth determining module 708 to determine whether the user equipment is the last member of the group in the belonging base station. If the member issuing the switching request is the last member of the group, the update module 707 is called to update the region list.
  • the third determining module 706 determines that the area list is updated
  • the calling encapsulation module 710 encapsulates the updated area list into the multimedia broadcast multicast service session update request message.
  • the sending module 711 sends the multimedia broadcast multicast service session update request message to the multi-cell/multicast coordination entity.
  • the MME acts as the target MME, and invokes the fifth determining module 709 to determine whether the user equipment is the first member of the group of the target cell, and if it is the group of the target cell. A member then calls the update module 707 to update the list of regions.
  • the third determining module 706 determines that the area list is updated
  • the calling encapsulation module 710 encapsulates the updated area list into the multimedia broadcast multicast service session update request message.
  • the sending module 711 sends the multimedia broadcast multicast service session update request message to the multi-cell/multicast coordination entity.
  • the geographical limitation of the cluster communication can be realized, and the members can perform cluster communication within the coverage of the LTE network, and the flexibility of the cluster communication is greatly provided.
  • FIG. 8 is a schematic structural diagram of an embodiment of a multi-cell/multicast coordination entity according to the present invention.
  • the multi-cell/multicast coordination entity of this embodiment includes: a receiving module 810, a reading module 820, a searching module 830, and a sending module 840.
  • the receiving module 810 is configured to receive the multimedia broadcast multicast service session start request message sent by the mobility management entity, and the receiving module 810 starts the multimedia broadcast multicast service session.
  • the request message is sent to the reading module 820, where the multimedia broadcast multicast service session start request message carries the area list and the multicast address.
  • the reading module 820 is configured to receive the multimedia broadcast multicast service session start request message, read the area list from the multimedia broadcast multicast service session start request message, and the read module 820 sends the area list to the lookup module 830. For example, in the fixed area based cluster communication, the reading module 820 reads out the cell list as the area list from the multimedia broadcast multicast service session start request message; in the mobile area based cluster communication, the reading module 820 reads from the multimedia The cell list and the tracking area list as the area list are read out in the broadcast multicast service session start request message.
  • the searching module 830 is configured to receive the area list, search for the corresponding base station according to the area list, and the searching module 830 sends the found base station to the sending module 840. For example, when the cluster communication is based on the fixed area, the searching module 830 searches for the base station belonging to the cell list according to the cell list. When the mobile area is based on the cluster communication, the searching module 830 searches for the base station belonging to the cell list according to the cell list, and according to the tracking. The zone list finds the base stations belonging to the tracking zone list.
  • the sending module 840 is configured to receive the found base station and send a multimedia broadcast multicast service session start request message to the base station, so that the base station can be added to the multicast address, thereby implementing group area management.
  • the receiving module 810 is configured to receive the multimedia broadcast multicast service session update request message sent by the mobility management entity, and the receiving module 810 updates the multimedia broadcast multicast service session.
  • the request message is sent to the readout module 820.
  • the reading module 820 is configured to receive a multimedia broadcast multicast service session update request message, and read the updated region list from the multimedia broadcast multicast service session update request message.
  • the searching module 830 receives the updated area list. If the obtained base station of the updated area list already exists, the searching module 830 searches the base station and sends a release resource indication; if the obtained updated cell list does not exist, the searching module The 830 searches for the corresponding base station, and sends a multimedia broadcast multicast service session start request message (excluding the cell list and the tracking area list) to the base station; if the tracked area in the obtained updated tracking list already exists, the searching module 830 does not perform Any processing; if the tracking area in the obtained updated tracking area list does not exist, the searching module 830 finds the corresponding base station, and sends a multimedia broadcast multicast service session start request message to the base station in the tracking area (excluding Cell list and tracking area list).
  • the geographical limitation of the cluster communication can be realized, and the members can perform cluster communication within the coverage of the LTE network, and the flexibility of the cluster communication is greatly provided.
  • FIG. 9 is a schematic structural diagram of still another embodiment of a mobility management entity according to the present invention.
  • the mobility management entity of the present embodiment includes a receiver 910, a processor 920, a transmitter 930, and a memory 940.
  • the processor 920 is coupled to the receiver 910, the transmitter 930, and the memory 940, respectively.
  • the receiver 910 is configured to receive the group identifier, the member list, and the multicast address generated by the multimedia broadcast multicast service gateway sent by the cluster management unit. For example, a member in the group in the area covered by the LTE network as the presenter proposes a group call request to the cluster management unit, and after receiving the group call request, the cluster management unit obtains the group identifier of the group. The information of all members of this group is queried locally to obtain a list of members. The cluster management unit encapsulates the group identity and the cell list into a group call session request message and sends it to the MBMS gateway.
  • the MBMS gateway After receiving the group call session request message, the MBMS gateway generates a multicast address for the group, and encapsulates the multicast address, the group identifier, and the member list into the group session start request message, and sends and receives to the MME.
  • the machine 910 receives the group session start request message to receive the group identifier, the member list, and the multicast address generated by the multimedia broadcast multicast service gateway sent by the cluster management unit.
  • the MME After receiving the group session start request message, the MME generates three types of initial area lists.
  • the processor 920 In the first mode, the processor 920 generates an initial region list immediately after receiving the member list, wherein immediately refers to the MME receiving the member list without any other steps in the shortest time that the MME can respond.
  • the processor 920 determines whether all members are in the connected state. If not all members are in the connected state, the MME waits until all members are in the connected state; if all members are connected The MME generates a cell list according to the cell in which the member of the connected state is located, and uses the cell list as a region list.
  • the processor 920 determines whether the set time is exceeded.
  • the status of the member is queried by querying the member list, and the cell list belonging to the area list is generated according to the cell in which the member of the connected state is located. And generating a tracking area list belonging to the area list according to the tracking area where the member of the idle state is located, and using the cell list and the tracking area list as the area list.
  • the processor 920 encapsulates the multicast address and the generated region list into the multimedia broadcast multicast service session start request message, and transmits the multimedia broadcast multicast service session start request message to the transmitter 930.
  • the processor 920 After transmitting the multimedia broadcast multicast service session start request message, the processor 920 queries whether the status of the member has changed, and determines whether the area list has been updated when the status of the member changes. For example, when a member of a group that belongs to the tracking area transitions from the idle state to the connected state, the MME needs to determine whether the region list has been updated. At this time, the processor 920 queries whether the status of the member has changed, and if the status of the member changes, it is determined whether the area list has been updated. If the member is the last member of the group in the tracking area, the judgment area list is updated; otherwise, the area list is not updated; if the member is the first member of the group in the cell, the judgment area is The list is updated, otherwise the area list is not updated. When the processor 920 determines that the area list is updated, the processor 920 encapsulates the updated area list into the multimedia broadcast multicast service session update request message.
  • the transmitter 930 is configured to receive the multimedia broadcast multicast service session start request message and the multimedia broadcast multicast service session update request message, and send the multimedia broadcast multicast service session start request message or the multimedia broadcast multicast service session update request message to the MCE.
  • Memory 940 is used to store routines and data.
  • the MME acts as the source MME.
  • the processor 920 determines whether the user equipment is the last member of the group in the own base station, and if the handover request is issued. The member of the group is the last member of the group, and the list of regions is updated.
  • the processor 920 determines that the area list is updated, the processor 920 encapsulates the updated area list into the multimedia broadcast multicast service session update request message.
  • the transmitter 930 transmits the multimedia broadcast multicast service session update request message to the MCE.
  • the MME acts as the target MME, and the processor 920 determines whether the user equipment is the first member of the group of the target cell, and if it is the first member of the group of the target cell , then update the list of regions.
  • the processor 920 determines that the cell list is updated, the processor 920 encapsulates the updated region list into the multimedia broadcast multicast service session update request message.
  • Transmitter 930 transmits the Multimedia Broadcast Multicast Service Session Update Request message to the multi-cell/multicast coordination entity.
  • the geographical limitation of the cluster communication can be realized, and the members can perform cluster communication within the coverage of the LTE network, and the flexibility of the cluster communication is greatly provided.
  • FIG. 10 is a schematic structural diagram of another embodiment of a multi-cell/multicast coordination entity according to the present invention.
  • the multi-cell/multicast coordination entity of this embodiment includes a receiver 1010, a processor 1020, a transmitter 1030, and a memory 1040.
  • the processor 1020 is coupled to the receiver 1010, the transmitter 1030, and the memory 1040, respectively.
  • the receiver 1010 When the MME sends a multimedia broadcast multicast service session start request message to the MCE, the receiver 1010 is configured to receive a multimedia broadcast multicast service session start request message sent by the mobility management entity, and the receiver 1010 starts the multimedia broadcast multicast service session.
  • the request message is sent to the processor 1020, where the multimedia broadcast multicast service session start request message carries the area list and the multicast address.
  • the processor 1020 is configured to receive a multimedia broadcast multicast service session start request message, and read out a region list from the multimedia broadcast multicast service session start request message. For example, when the fixed area based cluster communication is performed, the processor 1020 is configured from the multimedia broadcast group. In the broadcast service session start request message, the cell list as the area list is read out; in the mobile area based cluster communication, the processor 1020 reads out the cell list and the tracking area as the area list from the multimedia broadcast multicast service session start request message. List. The processor 1020 searches for a corresponding base station based on the area list, and the processor 1020 transmits the found base station to the transmitter 1030.
  • the processor 1020 searches for a base station belonging to the cell list according to the cell list; when the mobile area based cluster communication, the processor 1020 searches for the base station belonging to the cell list according to the cell list, and according to the tracking The zone list finds the base stations belonging to the tracking zone list.
  • the transmitter 1030 is configured to receive the discovered base station and send a multimedia broadcast multicast service session start request message to the base station, so that the base station can be added to the multicast address, thereby implementing group area management.
  • the memory 1040 is used to store programs and data.
  • the receiver 1010 When the MME sends a multimedia broadcast multicast service session update request message to the MCE, the receiver 1010 is configured to receive the multimedia broadcast multicast service session update request message sent by the mobility management entity, and the receiver 1010 updates the multimedia broadcast multicast service session.
  • the request message is sent to the processor 1020.
  • the processor 1020 is configured to receive a multimedia broadcast multicast service session update request message, and read the updated area list from the multimedia broadcast multicast service session update request message. If the acquired base station in the updated cell list already exists, the processor 1020 searches the base station and sends a release resource indication through the transmitter 1030; if the obtained base station in the updated cell list does not exist, the processor 1020 searches for the corresponding The base station sends a multimedia broadcast multicast service session start request message (excluding the cell list and the tracking area list) to the base station through the transmitter 1030; if the tracked area in the obtained updated tracking list already exists, the processor 1020 does not perform Any processing; if the tracked area in the obtained updated tracking area list does not exist, the processor 1020 finds the corresponding base station, and sends a multimedia broadcast multicast service session start request to the base station in the tracking area through the transmitter 1030. Message (excluding cell list and tracking area list).
  • the geographical limitation of the cluster communication can be realized, and the members can perform cluster communication within the coverage of the LTE network, and the flexibility of the cluster communication is greatly provided.
  • the application further provides a group area management system, including a cluster management unit, a multimedia broadcast multicast service gateway, a mobility management entity, and a multi-cell/multicast.
  • the coordination entity and the base station wherein the cluster management unit is respectively coupled to the multimedia broadcast multicast service gateway, the mobility management entity, and the base station, and the multimedia broadcast multicast service gateway is respectively coupled to the mobility management entity and the base station, and the mobility management entity is coupled respectively
  • the multi-cell/multicast coordination entity and the base station are coupled to the base station.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device implementations described above are merely illustrative.
  • the division of the modules or units is only a logical function division.
  • there may be another division manner for example, multiple units or components may be used. Combinations can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • a computer readable storage medium A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read only memory (ROM, Read-Only) Memory, random access memory (RAM), disk or optical disk, and other media that can store program code.

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Abstract

本申请公开了一种群组区域管理方法、设备及系统。所述方法包括如下步骤：接收多媒体广播组播业务网关所生成的组播地址；将组播地址以及区域列表封装到多媒体广播组播业务会话开始请求消息中；将多媒体广播组播业务会话开始请求消息向MCE发送，以供MCE根据区域列表查找到相应的基站，并将组播地址发送给相应的基站，使基站能够加入到组播地址中，从而实现群组区域管理。

Description

群组区域管理方法、设备及系统
【技术领域】
本申请涉及通信领域，特别是涉及群组区域管理方法、设备及系统。
【背景技术】
集群通讯采用的是为多个用户建立一个组，在每次群组会话中组内只有一个用户成为主讲，其它的用户都作为听众的模式。在这种模式下，属于同一基站（小区）的组内用户可以共享同一个下行信道，能够大大节省无线资源，因而在政府，能源，公安，铁路等部门得到了广泛的应用。
现有技术提供了一种基于时分同步码分多址（TD-SCDMA，Time Division-Synchronous Code Division Multiple Access）的集群系统，能够实现集群通讯，但是，随着长期演进（LTE，Long Term Evolution）系统的发展，TD-SCDMA系统的很大一部分市场将被LTE系统所占据，而现在LTE系统中尚未能实现集群通讯。
根据群组呼叫区域是否有限制，基于LTE的集群通讯设计分为两大类。一种是基于固定区域的集群通讯，基于固定区域的集群通讯所覆盖的基站（小区）是不变的，开户时加入了集群的组内成员只有在限定的基站所覆盖的小区内才能进行集群通讯；另一种是基于移动区域的集群通讯，开户时确定加入集群的组内成员，但是，组内成员的位置是可以随意移动的，在网络可以达到的范围内组内成员均可以进行集群通讯，也就是组内成员在呼叫时所属的基站（小区）是没有限制的。集群通讯系统必须知道集群通讯在哪些基站（小区）内进行，才能够确定使哪些基站获得集群通讯资源，从而进行集群通讯，即群组区域管理问题，因而，要实现基于LTE的集群通讯，必须首先解决在这两种情况下的群组的区域管理问题。一般而言，涉及群组的区域管理主要是群组寻呼、组呼通知、群组资源分配以及群组切换，但是，现有技术尚未提供任何一种基于LTE的群组区域管理方法。
【发明内容】
本申请主要解决的技术问题是提供群组区域管理方法、设备及系统，能够解决基于LTE的群组区域管理问题。
为解决上述技术问题，本申请第一方面提供了一种群组区域管理方法，包括如下步骤：接收多媒体广播组播业务网关所生成的组播地址；将所述组播地址以及区域列表封装到多媒体广播组播业务会话开始请求消息中；将所述多媒体广播组播业务会话开始请求消息向多小区/多播协调实体MCE发送，以供所述MCE根据所述区域列表查找到相应的基站，并将多媒体广播组播业务会话开始请求消息发送给相应的基站，使所述基站能够加入到所述组播地址中，从而实现群组区域管理。
在第一方面的第一种可能的实现方式中，接收集群管理单元所发送的组标识；将所述组标识封装到多媒体广播组播业务会话开始请求消息中，并向MCE发送，以供所述MCE通过所述基站向小区内的用户设备发送所述组标识，以供所述用户设备判断是否与所述基站建立连接。
在第一方面的第二种可能的实现方式中，所述将所述组播地址以及区域列表封装到多媒体广播组播业务会话开始请求消息中步骤之前包括如下步骤：接收集群管理单元所发送的小区列表，并将所述小区列表作为区域列表。
在第一方面的第三种可能的实现方式中，所述将所述组播地址以及区域列表封装到多媒体广播组播业务会话开始请求消息中步骤之前包括如下步骤：接收集群管理单元所发送的成员列表；根据所述成员列表查询成员的状态，并根据连接态的成员所在的小区生成小区列表以及根据空闲态的成员所在的跟踪区生成跟踪区列表，并将所述小区列表和所述跟踪区列表作为区域列表。
结合第一方面的第三种可能的实施方式，在第四种可能的实现方式中，所述根据成员列表查询成员的状态，并根据连接态的成员所在的小区生成小区列表以及根据空闲态的成员所在的跟踪区生成跟踪区列表步骤包括如下步骤：在接收到所述成员列表后，立即根据所述成员列表查询成员的状态，并根据连接态的成员所在的小区生成小区列表以及根据空闲态的成员所在的跟踪区生成跟踪区列表。
结合第一方面的第三种可能的实施方式，在第五种可能的实现方式中，所述根据成员列表查询成员的状态，并根据连接态的成员所在的小区生成小区列表以及根据空闲态的成员所在的跟踪区生成跟踪区列表步骤包括如下步骤：根据成员列表查询成员的状态，并判断是否所有的成员都处于连接态；如果所有的成员都处于连接态，根据连接态的成员所在的小区生成小区列表。
结合第一方面的第三种可能的实施方式，在第六种可能的实现方式中，所述根据成员列表查询成员的状态步骤之后，所述根据连接态的成员所在的小区生成小区列表以及根据空闲态的成员所在的跟踪区生成跟踪区列表步骤之前包括如下步骤：判断是否超过设定的时间；如果超过设定的时间，根据成员列表查询成员的状态，并根据连接态的成员所在的小区生成小区列表以及根据空闲态的成员所在的跟踪区生成跟踪区列表。
结合第一方面的第三种可能的实施方式，在第七种可能的实现方式中，所述将多媒体广播组播业务会话开始请求消息向MCE发送步骤之后包括：判断所述区域列表是否发生了更新；如果所述区域列表发生了更新，则将更新的所述区域列表封装到多媒体广播组播业务会话更新请求消息中，并将所述多媒体广播组播业务会话更新请求消息向所述MCE发送。
结合第一方面的第七种可能的实施方式，在第八种可能的实现方式中，所述判断小区列表和所述跟踪区列表是否发生了更新步骤还包括如下步骤：查询成员的状态是否发生了变化；如果成员的状态发生了变化，则判断所述区域列表是否发生了更新。
结合第一方面的第七种可能的实施方式，在第九种可能的实现方式中，所述判断小区列表和所述跟踪区列表是否发生了更新步骤之前还包括如下步骤：当接收到用户设备所发送的切换请求消息时，判断所述用户设备是否为所属基站内的该组的最后一个成员；如果所述用户设备是所属基站内的该组的最后一个成员，更新所述区域列表。
结合第一方面的第七种可能的实施方式，在第十种可能的实现方式中，所述判断小区列表和所述跟踪区列表是否发生了更新步骤之前还包括如下步骤：如果接收到前转重定位请求消息，则判断用户设备是否为目标小区的该组的第一个成员；如果是目标小区的该组的第一个成员，更新所述区域列表。
第二方面，提供了一种群组区域管理方法，包括如下步骤：接收移动性管理实体所发送的多媒体广播组播业务会话开始请求消息，其中，所述多媒体广播组播业务会话开始请求消息中承载了区域列表以及组播地址；从所述多媒体广播组播业务会话开始请求消息中读出区域列表；根据所述区域列表查找相应的基站，并将所述多媒体广播组播业务会话开始请求消息发送给所述基站，以使的所述基站能够加入到所述组播地址中，从而实现群组区域管理。
在第二方面的第一种可能的实现方式中，所述从多媒体广播组播业务会话开始请求消息中读出区域列表步骤包括：从多媒体广播组播业务会话开始请求消息中读出小区列表以及跟踪区列表；所述根据区域列表查找相应的基站步骤包括：根据所述小区列表查找属于所述小区列表的基站，以及根据所述跟踪区列表查找属于所述跟踪区列表的基站。
结合第二方面的第一种可能的实现方式，在第二种可能的实施方式中，接收移动性管理实体所发送多媒体广播组播业务会话更新请求消息；从所述多媒体广播组播业务会话更新请求消息中读出更新的区域列表。
第三方面，提供了一种移动性管理实体，包括：接收模块、封装模块以及发送模块，所述接收模块用于接收多媒体广播组播业务网关所生成的组播地址，所述接收模块将所述组播地址向所述封装模块发送；所述封装模块用于接收所述组播地址并将所述组播地址以及区域列表封装到多媒体广播组播业务会话开始请求消息中，所述封装模块用于将所述多媒体广播组播业务会话开始请求消息向所述发送模块发送；所述发送模块用于接收所述多媒体广播组播业务会话开始请求消息，将所述多媒体广播组播业务会话开始请求消息向MCE发送，以供所述MCE根据所述区域列表查找到相应的基站并将所述多媒体广播组播业务会话开始请求消息发送给相应的基站，使所述基站能够加入到所述组播地址中，从而实现群组区域管理。
在第三方面的第一种可能的实现方式中，所述接收模块还用于接收集群管理单元所发送的组标识，所述接收模块将所述组标识向所述封装模块发送；所述封装模块还用于将所述组标识封装到多媒体广播组播业务会话开始请求消息中，所述封装模块将所述多媒体广播组播业务会话开始请求消息向所述发送模块发送；所述发送模块用于接收所述多媒体广播组播业务会话开始请求消息，并将所述多媒体广播组播业务会话开始请求消息向MCE发送，以供所述MCE通过所述基站向小区内的用户设备发送所述组标识，以供所述用户设备判断是否与所述基站建立连接。
在第三方面的第二种可能的实现方式中，所述接收模块还用于接收集群管理单元所发送的小区列表，并将所述小区列表作为区域列表。
在第三方面的第三种可能的实现方式中，所述移动性管理实体还包括生成模块；所述接收模块还用于接收集群管理单元所发送的成员列表，所述接收模块将所述成员列表向所述生成模块发送；所述生成模块用于接收所述成员列表，根据所述成员列表查询成员的状态，并根据连接态的成员所在的小区生成小区列表以及根据空闲态的成员所在的跟踪区生成跟踪区列表，并将所述小区列表和所述跟踪区列表作为区域列表。
结合第三方面的第三种可能的实施方式，在第四种可能的实现方式中，所述生成模块还用于在接收到成员列表后，立即根据成员列表查询成员的状态，并根据连接态的成员所在的小区生成小区列表以及根据空闲态的成员所在的跟踪区生成跟踪区列表。
结合第三方面的第三种可能的实施方式，在第五种可能的实现方式中，所述移动性管理实体还包括第一判断模块；所述第一判断模块用于根据成员列表查询成员的状态，并判断是否所有的成员都处于连接态，所述第一判断模块将所述第一判断结果向所述生成模块发送；所述生成模块还用于接收所述第一判断结果，在所有的成员都处于连接态时，根据连接态的成员所在的小区生成小区列表。
结合第三方面的第三种可能的实施方式，在第六种可能的实现方式中，所述移动性管理实体还包括第二判断模块；所述第二判断模块用于判断是否超过设定的时间，所述第二判断模块将所述第二判断结果向所述生成模块发送；所述生成模块还用于接收所述第二判断结果，在超过设定的时间时，根据成员列表查询成员的状态，并根据连接态的成员所在的小区生成小区列表以及根据空闲态的成员所在的跟踪区生成跟踪区列表。
结合第三方面的第三种可能的实施方式，在第七种可能的实现方式中，所述移动性管理实体还包括第三判断模块，所述第三判断模块用于判断所述区域列表是否发生了更新，所述第三判断模块将第三判断结果向所述封装模块发送；所述封装模块还用于接收第三判断结果，在所述区域列表发生了更新时，将更新的区域列表封装到多媒体广播组播业务会话更新请求消息中，所述封装模块将所述多媒体广播组播业务会话更新请求消息向所述发送模块发送；所述发送模块还用于接收所述多媒体广播组播业务会话更新请求消息，将所述多媒体广播组播业务会话更新请求消息向所述MCE发送。
结合第三方面的第七种可能的实施方式，在第八种可能的实现方式中，所述移动性管理实体还包括查询模块，所述查询模块用于查询成员的状态是否发生了变化，所述查询模块将查询结果向所述第三判断模块发送；所述第三判断模块还用于接收所述查询结果，在成员的状态发生了变化时，判断所述区域列表是否发生了更新。
结合第三方面的第七种可能的实施方式，在第九种可能的实现方式中，所述移动性管理实体还包括第四判断模块，所述第四判断模块用于在接收到用户设备所发送的切换请求消息时，判断所述用户设备是否为所属基站内的该组的最后一个成员，所述第四判断模块将第四判断结果向所述更新模块发送；所述更新模块还用于接收所述第四判断结果，在是所属基站内的该组的最后一个成员时，更新所述区域列表。
结合第三方面的第七种可能的实施方式，在第十种可能的实现方式中，所述移动性管理实体还包括第五判断模块，所述第五判断模块用于在接收到前转重定位请求消息，判断用户设备是否为目标小区的该组的第一个成员，所述第五判断模块将第五判断结果向所述更新模块发送；所述更新模块还用于接收所述第五判断结果，在是目标小区的该组的第一个成员时，更新所述区域列表。
第四方面，提供了一种MCE，包括接收模块，读出模块、查找模块以及发送模块，所述接收模块用于接收移动性管理实体所发送的多媒体广播组播业务会话开始请求消息，所述接收模块将所述多媒体广播组播业务会话开始请求消息向所述读出模块发送，其中，所述多媒体广播组播业务会话开始请求消息中承载了区域列表以及组播地址；所述读出模块用于接收所述多媒体广播组播业务会话开始请求消息，从所述多媒体广播组播业务会话开始请求消息中读出区域列表，所述读出模块将所述区域列表向所述查找模块发送；所述查找模块用于接收所述区域列表，根据所述区域列表查找相应的基站，所述查找模块将查找到的基站向所述发送模块发送；所述发送模块用于接收查找到的基站并将所述多媒体广播组播业务会话开始请求消息发送给所述基站，以使的所述基站能够加入到所述组播地址中，从而实现群组区域管理。
在第四方面的第一种可能的实现方式中，所述读出模块还用于从多媒体广播组播业务会话开始请求消息中读出小区列表以及跟踪区列表，所述读出模块将小区列表以及跟踪区列表向所述查找模块发送；所述查找模块还用于接收所述小区列表以及跟踪区列表，根据所述小区列表查找属于所述小区列表的基站，以及根据所述跟踪区列表查找属于所述跟踪区列表的基站。
结合第四方面的第一种可能的实现方式，在第二种可能的实施方式中，所述接收模块还用于接收移动性管理实体所发送多媒体广播组播业务会话更新请求消息，所述接收模块将所述多媒体广播组播业务会话更新请求消息向所述读出模块发送；所述读出模块还用于接收所述多媒体广播组播业务会话更新请求消息，从所述多媒体广播组播业务会话更新请求消息中读出更新的区域列表。
第五方面，提供了一种移动性管理实体，包括：接收机、处理器、发送机以及存储器，所述接收机用于接收多媒体广播组播业务网关所生成的组播地址，所述接收机将所述组播地址向所述处理器发送；所述处理器用于接收所述组播地址并将所述组播地址以及区域列表封装到多媒体广播组播业务会话开始请求消息中，所述处理器用于将所述多媒体广播组播业务会话开始请求消息向所述发送机发送；所述发送机用于接收所述多媒体广播组播业务会话开始请求消息，将所述多媒体广播组播业务会话开始请求消息向MCE发送，以供所述MCE根据所述区域列表查找到相应的基站并将所述多媒体广播组播业务会话开始请求消息发送给相应的基站，使所述基站能够加入到所述组播地址中，从而实现群组区域管理；所述存储器用于存储例程及数据。
在第五方面的第一种可能的实现方式中，所述接收机还用于接收集群管理单元所发送的组标识，所述接收机将所述组标识向所述处理器发送；所述处理器还用于将所述组标识封装到多媒体广播组播业务会话开始请求消息中，所述处理器将所述多媒体广播组播业务会话开始请求消息向所述发送机发送；所述发送机用于接收所述多媒体广播组播业务会话开始请求消息，并向MCE发送，以供所述MCE通过所述基站向小区内的用户设备发送所述组标识，以供所述用户设备判断是否与所述基站建立连接。
在第五方面的第二种可能的实现方式中，所述接收机还用于接收集群管理单元所发送的小区列表，并将所述小区列表作为区域列表。
在第五方面的第三种可能的实现方式中，所述接收机还用于接收集群管理单元所发送的成员列表，所述接收机将所述成员列表向所述处理器发送；所述处理器用于接收所述成员列表，根据所述成员列表查询成员的状态，并根据连接态的成员所在的小区生成小区列表以及根据空闲态的成员所在的跟踪区生成跟踪区列表，并将所述小区列表和所述跟踪区列表作为区域列表。
结合第五方面的第三种可能的实施方式，在第四种可能的实现方式中，所述处理器还用于在接收到所述成员列表后，立即根据所述成员列表查询成员的状态，并根据连接态的成员所在的小区生成小区列表以及根据空闲态的成员所在的跟踪区生成跟踪区列表。
结合第五方面的第三种可能的实施方式，在第五种可能的实现方式中，所述处理器还用于根据成员列表查询成员的状态，判断是否所有的成员都处于连接态，在所有的成员都处于连接态时，根据连接态的成员所在的小区生成小区列表。
结合第五方面的第三种可能的实施方式，在第六种可能的实现方式中，所述处理器还用于判断是否超过设定的时间，在超过设定的时间时，根据成员列表查询成员的状态，并根据连接态的成员所在的小区生成小区列表以及根据空闲态的成员所在的跟踪区生成跟踪区列表。
结合第五方面的第三种可能的实施方式，在第七种可能的实现方式中，所述处理器还用于判断所述区域列表是否发生了更新，在所述区域列表发生了更新时，将更新的区域列表封装到多媒体广播组播业务会话更新请求消息中，所述处理器将所述多媒体广播组播业务会话更新请求消息向所述发送机发送；所述发送机还用于接收所述多媒体广播组播业务会话更新请求消息，将所述多媒体广播组播业务会话更新请求消息向所述MCE发送。
结合第五方面的第七种可能的实施方式，在第八种可能的实现方式中，所述处理器还用于查询成员的状态是否发生了变化，在成员的状态发生了变化时，判断所述区域列表是否发生了更新。
结合第五方面的第七种可能的实施方式，在第九种可能的实现方式中，所述处理器还用于在接收到用户设备所发送的切换请求消息时，判断所述用户设备是否为所属基站内的该组的最后一个成员，在是所属基站内的该组的最后一个成员时，更新所述区域列表。
结合第五方面的第七种可能的实施方式，在第十种可能的实现方式中，所述处理器还用于在接收到前转重定位请求消息时，判断用户设备是否为目标小区的该组的第一个成员，在是目标小区的该组的第一个成员时，更新所述区域列表。
第六方面，提供了一种MCE，包括接收机、处理器、发送机以及存储器，所述接收机用于接收移动性管理实体所发送的多媒体广播组播业务会话开始请求消息，所述接收机将所述多媒体广播组播业务会话开始请求消息向所述处理器发送，其中，所述多媒体广播组播业务会话开始请求消息中承载了区域列表以及组播地址；所述处理器用于接收所述多媒体广播组播业务会话开始请求消息，从所述多媒体广播组播业务会话开始请求消息中读出区域列表，根据所述区域列表查找相应的基站，所述处理器将查找到的基站向所述发送机发送；所述发送机用于接收查找到的基站并将所述多媒体广播组播业务会话开始请求消息发送给所述基站，以使的所述基站能够加入到所述组播地址中，从而实现群组区域管理；所述存储器用于存储例程及数据。
在第六方面的第一种可能的实现方式中，所述处理器还用于从多媒体广播组播业务会话开始请求消息中读出小区列表以及跟踪区列表，根据所述小区列表查找属于所述小区列表的基站，以及根据所述跟踪区列表查找属于所述跟踪区列表的基站。
结合第六方面的第一种可能的实现方式，在第二种可能的实施方式中，所述接收机还用于接收移动性管理实体所发送多媒体广播组播业务会话更新请求消息，所述接收机将所述多媒体广播组播业务会话更新请求消息向所述处理器发送；所述处理器还用于接收所述多媒体广播组播业务会话更新请求消息，从所述多媒体广播组播业务会话更新请求消息中读出更新的区域列表。
第七方面，提供了一种群组区域管理系统，包括集群管理单元，多媒体广播组播业务网关、移动性管理实体、MCE以及基站，其中，集群管理单元分别耦接多媒体广播组播业务网关、移动性管理实体以及基站，多媒体广播组播业务网关分别耦接移动性管理实体以及基站，移动性管理实体分别耦接MCE以及基站，所述MCE耦接基站，移动性管理实体为如上述任一项所述的移动性管理实体。
在第七方面的第一种可能的实施方式中，所述MCE为如上述任一项所述的MCE。
通过上述方案，将组播地址以及区域列表封装到多媒体广播组播业务会话开始请求消息中，然后将多媒体广播组播业务会话开始请求消息向多小区/多播协调实体发送，使得多小区/多播协调实体能够根据从区域列表中获得参与进行集群通讯的基站（小区）的范围，然后通过多小区/多播协调实体去查找到相应的基站，并将组播地址向基站发送，从而使基站能够加入到组播地址中，从而实现群组区域管理，进而实现集群通讯。
【附图说明】
图1是本发明群组呼叫方法一实施方式的交互图；
图2是本发明群组区域管理方法一实施方式的流程图；
图3是本发明群组区域管理方法另一实施方式的流程图；
图4是本发明群组呼叫方法另一实施方式的交互图；
图5是本发明群组切换方法区域管理一实施方式的交互图；
图6是本发明移动性管理实体一实施方式的结构示意图；
图7是本发明移动性管理实体另一实施方式的结构示意图；
图8是本发明多小区/多播协调实体一实施方式的结构示意图；
图9是本发明移动性管理实体再一实施方式的结构示意图；
图10是本发明多小区/多播协调实体另一实施方式的结构示意图。
【具体实施方式】
以下描述中，为了说明而不是为了限定，提出了诸如特定系统结构、接口、技术之类的具体细节，以便透彻理解本申请。然而，本领域的技术人员应当清楚，在没有这些具体细节的其它实施方式中也可以实现本申请。在其它情况中，省略对众所周知的装置、电路以及方法的详细说明，以免不必要的细节妨碍本申请的描述。
参阅图1，图1是本发明群组呼叫方法一实施方式的交互图。本发明群组呼叫方法一实施方式涉及：集群管理单元、多媒体广播组播业务（MBMS，Multimedia Broadcast Multicast Service）网关、移动性管理实体（MME，Mobility Management Entity）、多小区/多播协调实体（MCE，Multi-cell/Multicast Coordination Entity）、基站（例如，eNodeB）以及用户设备（UE）。其中，图1的交互图适用于基于固定区域的集群通讯的群组寻呼，UE在开户时加入某一个群组，成为组内成员。由于基于固定区域的集群通讯限定了所述群组只有在指定的基站所覆盖的小区内才能进行集群通讯，因此，作为组内成员的UE必须在指定的基站所覆盖的小区内才能进行集群通讯。
在指定的基站所覆盖的小区内的一个成员作为主讲者向集群管理单元提出了一个群组呼叫请求，集群管理单元在接收到所述群组呼叫请求后，获得该群组的组标识，并在本地查询这个群组呼叫所对应的小区列表（由于只有在指定的基站所覆盖的小区内才能进行集群通讯，可以预先将指定的基站的地址存储在集群管理单元中），其中，小区列表中存储了群组呼叫所对应的基站的地址。集群管理单元将组标识以及成员列表封装到群组呼叫会话请求消息中，并向MBMS网关发送。
MBMS网关在接收到群组呼叫会话请求消息后，为这个群组生成一个组播地址，并将组播地址、组标识以及小区列表封装到群组会话开始请求消息中，并向MME发送。
请一并参阅图2，图2是本发明群组区域管理方法一实施方式的流程图。本发明群组区域管理方法一实施方式包括如下步骤:
S201：MME接收集群管理单元所发送的小区列表以及MBMS网关所生成的组播地址。
MME接收MBMS网关所发送的群组会话开始请求消息，从而获得集群管理单元所发送的组标识和小区列表，以及MBMS网关所生成的组播地址。
S202：MME将组播地址以及小区列表封装到多媒体广播组播业务会话开始请求消息中。
MME在获得组标识、小区列表以及组播地址后，把小区列表作为区域列表与组标识以及组播地址一起封装到多媒体广播组播业务会话开始请求消息中。
S203：MME将多媒体广播组播业务会话开始请求消息向MCE发送。
MME在封装好多媒体广播组播业务会话开始请求消息后，将多媒体广播组播业务会话开始请求消息向MCE发送。
请一并参阅图3，图3是本发明群组区域管理方法另一实施方式的流程图。本发明群组区域管理方法另一实施方式包括如下步骤:
S301：MCE接收MME所发送的多媒体广播组播业务会话开始请求消息。
S302：MCE从多媒体广播组播业务会话开始请求消息中读出小区列表。
MCE接收到多媒体广播组播业务会话开始请求消息后，从多媒体广播组播业务会话开始请求消息中读出小区列表。
S303：MCE根据小区列表查找相应的基站，并将多媒体广播组播业务会话开始请求消息发送给所述基站。
MCE根据小区列表依此查找到小区列表上的基站，并将多媒体广播组播业务会话开始请求消息（不包括小区列表）分别向所有基站发送。然后，MCE向MME发送多媒体广播组播业务会话开始响应消息，告知MME已接收了多媒体广播组播业务会话开始请求消息。
基站接收到MCE发送的多媒体广播组播业务会话开始请求消息后，向MCE发送多媒体广播组播业务会话开始响应消息，告知MCE已接收了多媒体广播组播业务会话开始请求消息。然后，基站从多媒体广播组播业务会话开始请求消息中读取组标识以及组播地址。基站将组标识封装到群组寻呼消息中向小区内所有的UE发送。在接收到MCE所述发送的多媒体广播组播业务调度信息请求后，基站加入到组播地址中，并向MCE发送多媒体广播组播业务调度信息响应，从而建立集群通讯的通道。自此，主讲者所发送的数据包可以通过所述集群通讯的通道发送到指定的基站中。
在指定的基站所覆盖的小区内的UE接收群组寻呼消息，并从群组寻呼消息中读取组标识，如果UE检测所述组标识是自身具有的组标识（UE在开户时，如果加入了某一群组，则会获得与该群组对应的组标识），则UE与基站建立连接，并作为听众接收主讲者所发送的数据包；如果UE检测所述组标识不是自身具有的组标识，则不予理会。
基于固定区域的集群通讯的组呼通知、群组资源分配的范围都是预定义的范围，MME将预定义的范围发送给MCE后，MCE根据预定义的范围进行组呼通知和群组资源分配。
群组切换在小区列表所包括的范围内进行切换时，切换的流程与原来LTE系统的切换的流程一样，但如果群组切换超出小区列表所包括的范围时，切换将失败。
通过上述方案，将组播地址以及区域列表封装到多媒体广播组播业务会话开始请求消息中，然后将多媒体广播组播业务会话开始请求消息向多小区/多播协调实体发送，使得多小区/多播协调实体能够根据从区域列表中获得参与进行集群通讯的基站（小区）的范围，然后通过多小区/多播协调实体去查找到相应的基站，并将组播地址向基站发送，从而使基站能够加入到组播地址中，从而实现群组区域管理，进而实现集群通讯。
参阅图4，图4是本发明群组呼叫方法另一实施方式的交互图。本发明群组呼叫方法一实施方式涉及：集群管理单元、MBMS网关、MME、MCE、属于小区列表的基站、属于跟踪区列表的基站以及UE。其中，图4的交互图适用于基于移动区域的集群通讯的群组寻呼，UE在开户时加入某一个群组，成为组内成员。基于移动区域的集群通讯与上述基于固定区域的集群通讯不同，不需要在指定的基站（小区）所覆盖的区域进行集群通讯，实际上，只要在LTE网络覆盖的区域都可以进行集群通讯。
在LTE网络覆盖的区域内的群组内的一个成员作为主讲者向集群管理单元提出了一个群组呼叫请求，集群管理单元接收到群组呼叫请求后，获得该群组的组标识，并在本地查询这个群组的所有成员的信息以获得成员列表。集群管理单元将组标识以及小区列表封装到群组呼叫会话请求消息中，并向MBMS网关发送。
MBMS网关在接收到群组呼叫会话请求消息后，为这个群组生成一个组播地址，并将组播地址、组标识以及成员列表封装到群组会话开始请求消息中，并向MME发送。
MME在接收到集群管理单元所发送的成员列表后，根据成员列表查询成员的状态。由于成员在连接态（也称上线状态）时，MME能够获得成员所在小区，而成员在空闲态（也称离线状态）时，MME只能够获得成员所在跟踪区（跟踪区通常包含多个基站所覆盖的小区），所以根据连接态的成员所在的小区生成属于区域列表的小区列表以及根据空闲态的成员所在的跟踪区生成属于区域列表的跟踪区列表，并把小区列表和跟踪区列表作为区域列表。
具体地，MME在接收到集群管理单元所发送的成员列表后，首先生成初始小区列表以及初始跟踪区列表。例如，MME在接收到成员列表后，立即根据成员列表查询成员的状态，并根据连接态的成员所在的小区小区列表以及根据空闲态的成员所在的跟踪区生成跟踪区列表，其中，立即是指MME在接收到成员列表后，不经过其它任何的步骤，在MME能够反应的最短时间内。在另一种实施方式中，MME在接收到成员列表后查询成员的状态，判断是否所有的成员都处于连接态，如果不是所有的成员都处于连接态，MME一直等待，直到所有的成员都处于连接态；如果所有的成员都处于连接态，MME根据连接态的成员所在的小区生成小区列表。在再一种实施方式中，MME在接收到成员列表后设置定时时间，并判断是否超过设定的时间。如果没有超过设定的时间，MME一直等待，直到超过设定的时间；如果超过设定的时间，MME根据成员列表查询成员的状态，并根据连接态的成员所在的小区生成小区列表以及根据空闲态的成员所在的跟踪区生成跟踪区列表。MME将组标识、区域列表（包括小区列表和跟踪区列表）以及组播地址一起封装到多媒体广播组播业务会话开始请求消息中。MME在封装好多媒体广播组播业务会话开始请求消息后，将多媒体广播组播业务会话开始请求消息向MCE发送。
此后，MME定时查询小区列表和跟踪区列表是否发生了更新。例如，原来属于跟踪区的一个组内成员从空闲态转为连接态时，则MME需要判断区域列表是否发生了更新。此时，MME查询成员的状态是否发生了变化，并判断成员的状态发生了变化，于是MME需进一步判断区域列表是否发生了更新。如果该成员是跟踪区内的该组的最后一个成员，则区域列表发生更新；反之，则区域列表不发生更新；如果该成员是小区中的该组的第一个成员，则区域列表发生更新，反之则区域列表不发生更新。如果区域列表发生了更新，则MME将更新的区域列表封装到多媒体广播组播业务会话更新请求消息中，然后向MCE发送。
如果MCE接收到多媒体广播组播业务会话开始请求消息，则从多媒体广播组播业务会话开始请求消息中读取小区列表和跟踪区列表，并根据小区列表查找到属于小区列表的基站，以及根据跟踪区列表查找到属于跟踪区列表的基站。查找完毕后，MCE将多媒体广播组播业务会话开始请求消息（不包括小区列表和跟踪区列表）向查找到的基站发送。如果MCE接收到多媒体广播组播业务会话更新请求消息，MCE从多媒体广播组播业务会话更新请求消息中获取更新的区域列表，如果获取到的更新的小区列表中的基站已经存在，MCE向基站发送释放资源指示；如果获取到的更新的小区列表中的基站不存在，则MCE向该基站发送多媒体广播组播业务会话开始请求消息（不包括小区列表和跟踪区列表）；如果获取到的更新的跟踪列表中的跟踪区已经存在，MCE不作任何处理；如果获取到的更新的跟踪区列表中的跟踪区不存在，则MCE向该跟踪区内的基站发送多媒体广播组播业务会话开始请求消息（不包括小区列表和跟踪区列表）。
属于小区列表的基站接收到MCE发送的多媒体广播组播业务会话开始请求消息后，向MCE发送多媒体广播组播业务会话开始响应消息，告知MCE已接收了多媒体广播组播业务会话开始请求消息。然后，基站从多媒体广播组播业务会话开始请求消息中读取组标识以及组播地址。基站将组标识封装到群组寻呼消息中向小区内所有的UE发送。在接收到MCE所述发送的多媒体广播组播业务调度信息请求后，基站加入到组播地址中，并向MCE发送多媒体广播组播业务调度信息响应，从而建立集群通讯的通道。自此，主讲者所发送的数据包可以通过所述集群通讯的通道发送到指定的基站中。
属于跟踪区列表的基站接收到MCE发送的多媒体广播组播业务会话开始请求消息后，从多媒体广播组播业务会话开始请求消息中读取组标识，并将组标识封装到群组寻呼消息，向跟踪区内所有的小区的UE发送。然后，属于跟踪区列表的基站向MCE发送多媒体广播组播业务会话开始响应消息，告知MCE已接收了多媒体广播组播业务会话开始请求消息。
处于连接态的UE接收群组寻呼消息，并从群组寻呼消息中读取组标识，如果UE检测所述组标识是自身具有的组标识（UE在开户时，如果加入了某一群组，则会获得与该群组对应的组标识），则UE与属于小区列表的基站建立连接，并作为听众接收主讲者所发送的数据包；如果UE检测所述组标识不是自身具有的组标识，则不予理会。处于空闲态的UE接收群组寻呼消息，并从群组寻呼消息中读取组标识，如果UE检测所述组标识是自身具有的组标识，UE从空闲态转为连接态；如果UE检测所述组标识不是自身具有的组标识，则不予理会。
基于移动区域的集群通讯的组呼通知的范围都是小区列表和跟踪区列表的合集，MME同样进行区域管理，然后MME将组呼通知的范围发送给MCE，MCE根据组呼通知的范围将组呼通知发送给相应的基站（小区）。
基于移动区域的集群通讯的群组资源分配的范围都是小区列表所包括的范围，MME同样进行区域管理，然后MME将群组资源分配的范围发送给MCE，MCE根据群组资源分配的范围给相应的基站（小区）分配群组资源。
基于移动区域的集群通讯的群组切换除了按常规的LTE系统的切换流程进行切换外，还需要进行区域管理。参阅图5，图5是本发明群组切换方法区域管理一实施方式的交互图。交互时的主体包括：成员（例如，UE）、源基站、目标基站、源MME、目标MME、源MCE以及目标MCE。
作为组内成员的其中一个UE向源基站发送MR测量报告，源基站接收到MR测量报告后，向源MME发送切换请求，源MME接收到切换请求后，判断需要进行切换的UE是否为所属基站的该组的最后一个成员。如果是该组的最后一个成员，则源MME更新区域列表并向源MCE发送群组区域更新消息；如果不是该组的最后一个成员，则源MME不会向源MCE发送群组区域更新消息。例如：一个处于连接态的成员从原来的基站所覆盖的范围移动到另一个基站所覆盖的范围时，MME需要判断区域列表是否发生了更新，如果处于连接态的成员从原来的基站所覆盖的范围移动到另一个小区列表上的基站所覆盖的范围时，区域列表都不发生更新；如果处于连接态的成员从原来的基站所覆盖的范围移动到另一个不属于小区列表上的基站所覆盖的范围时，MME判断区域列表发生了更新。如果源MCE接收到群组区域更新消息，源MCE将向源基站发送资源释放指示。源基站接收到资源释放指示后，释放群组资源并退出组播地址。如果切换失败，若源基站还没收到源MCE发送的新的群组区域更新消息，则源基站忽略源MCE发送的关于该群组的新的群组区域更新消息；若源基站已经收到源MCE发送的新的群组区域更新消息，但还没有正式下发给小区内的成员，则停止下发；若源基站已经收到源MCE发送的新的群组区域更新消息，并且已经下发给小区内的成员，则源基站立即下发以前的群组区域更新消息给小区内的成员。
源MME继续向目标MME发送前转重定位请求消息，目标MME在接收到前转重定位请求消息后，判断是否为目标小区的该组的第一个成员，如果是该组的第一个成员，则目标MME更新区域列表并向目标MCE发送群组区域更新消息；如果不是该组的第一个成员，则目标MME不会向目标MCE发送群组区域更新消息。如果目标MCE接收到群组区域更新消息，目标MCE将向目标基站发送资源分配指示。目标基站接收到资源分配指示后，获得群组资源并加入组播地址。如果切换失败，若目标基站还没收到目标MCE发送的新的群组区域更新消息，则目标基站忽略目标MCE发送的关于该群组的新的群组区域更新消息；若目标基站已经收到目标MCE发送的新的群组区域更新消息，但还没有正式下发给小区内的成员，则停止下发；若目标基站已经收到目标MCE发送的新的群组区域更新消息，并且已经下发给小区内的成员，则目标基站立即下发以前的群组区域更新消息给小区内的成员。
通过上述方案，能够实现摆脱对集群通讯的地域限制，成员在LTE网络覆盖的范围内都可以进行集群通讯，大大提供集群通讯的灵活性。
参阅图6，图6是本发明移动性管理实体一实施方式的结构示意图。本实施方式的移动性管理实体包括：接收模块601、封装模块602以及发送模块603。
接收模块601用于接收多媒体广播组播业务网关所生成的组播地址，接收模块601将组播地址向封装模块602发送。
封装模块602用于接收组播地址并将组播地址以及区域列表封装到多媒体广播组播业务会话开始请求消息中，封装模块602用于将多媒体广播组播业务会话开始请求消息向发送模块603发送。
发送模块603用于接收多媒体广播组播业务会话开始请求消息，将多媒体广播组播业务会话开始请求消息向多小区/多播协调实体发送，以供多小区/多播协调实体根据区域列表查找到相应的基站并将组播地址发送给相应的基站，使基站能够加入到所述组播地址中，从而实现群组区域管理。
通过上述方案，将组播地址以及区域列表封装到多媒体广播组播业务会话开始请求消息中，然后将多媒体广播组播业务会话开始请求消息向多小区/多播协调实体发送，使得多小区/多播协调实体能够根据从区域列表中获得参与进行集群通讯的基站（小区）的范围，然后通过多小区/多播协调实体去查找到相应的基站，并将组播地址向基站发送，从而使基站能够加入到组播地址中，从而实现群组区域管理，进而实现集群通讯。
参阅图7，图7是本发明移动性管理实体另一实施方式的结构示意图。本实施方式的移动性管理实体包括：接收模块701、第一判断模块702、第二判断模块703、生成模块704、查询模块705、第三判断模块706、更新模块707、第四判断模块708、第五判断模块709、封装模块710以及发送模块711。
接收模块701用于接收集群管理单元所发送的组标识、成员列表及多媒体广播组播业务网关所生成的组播地址。比如：在LTE网络覆盖的区域内的群组内的一个成员作为主讲者向集群管理单元提出了一个群组呼叫请求，集群管理单元接收到群组呼叫请求后，获得该群组的组标识，并在本地查询这个群组的所有成员的信息以获得成员列表。集群管理单元将组标识以及成员列表封装到群组呼叫会话请求消息中，并向MBMS网关发送。MBMS网关在接收到群组呼叫会话请求消息后，为这个群组生成一个组播地址，并将组播地址、组标识以及成员列表封装到群组会话开始请求消息中，并向MME发送，接收模块701则接收群组会话开始请求消息从而接收集群管理单元所发送的组标识、成员列表及多媒体广播组播业务网关所生成的组播地址。
在接收到群组会话开始请求消息后，MME生成初始区域列表的方式有三种。在第一种方式中，MME在接收到成员列表后，立即调用生成模块704生成初始区域列表，其中，立即是指MME在接收到成员列表后，不经过其它任何的步骤，在MME能够反应的最短时间内。在第二种方式中，MME通过第一判断模块702判断是否所有的成员都处于连接态，如果不是所有的成员都处于连接态，MME一直等待，直到所有的成员都处于连接态；如果所有的成员都处于连接态，调用生成模块704根据连接态的成员所在的小区生成小区列表，并把小区列表作为区域列表。在第三种方式中，MME通过第二判断模块703判断是否超过设定的时间，如果超过设定的时间，MME通过查询成员列表查询成员的状态，并调用生成模块704根据连接态的成员所在的小区生成小区列表以及根据空闲态的成员所在的跟踪区生成跟踪区列表，并把小区列表和跟踪区列表作为区域列表。封装模块710用于将组播地址以及生成的区域列表封装到多媒体广播组播业务会话开始请求消息中，并将多媒体广播组播业务会话开始请求消息向发送模块711发送。
查询模块705用于查询成员的状态是否发生了变化，查询模块705将查询结果向第三判断模块706发送。第三判断模块706用于接收查询结果，在成员的状态发生了变化时，判断区域列表是否发生了更新。比如，原来属于跟踪区的一个组内成员从空闲态转为连接态时，则MME需要判断区域列表是否发生了更新。此时，查询模块705查询成员的状态是否发生了变化，如果成员的状态发生了变化，第三判断模块706需要判断区域列表是否发生了更新。如果该成员是跟踪区内的该组的最后一个成员，则第三判断模块706判断区域列表发生更新；反之，则第三判断模块706判断区域列表不发生更新；如果该成员是小区中的该组的第一个成员，则第三判断模块706判断区域列表发生更新，反之则第三判断模块706判断区域列表不发生更新。然后，更新模块707对区域列表进行更新。第三判断模块706判断区域列表发生更新时，调用封装模块710将更新的区域列表封装到多媒体广播组播业务会话更新请求消息中。
发送模块711用于接收多媒体广播组播业务会话开始请求消息和多媒体广播组播业务会话更新请求消息，将多媒体广播组播业务会话开始请求消息或多媒体广播组播业务会话更新请求消息向多小区/多播协调实体发送。
切换时，如果接收模块701接收到用户设备所发送的切换请求消息，则MME作为源MME，此时，MME调用第四判断模块708判断用户设备是否为所属基站内的该组的最后一个成员，如果发出切换请求的成员是该组的最后一个成员，则调用更新模块707更新区域列表。第三判断模块706判断区域列表发生更新时，调用封装模块710将更新的区域列表封装到多媒体广播组播业务会话更新请求消息中。发送模块711将多媒体广播组播业务会话更新请求消息向多小区/多播协调实体发送。
如果接收模块701接收到前转重定位请求消息，则MME作为目标MME，调用第五判断模块709判断用户设备是否为目标小区的该组的第一个成员，如果是目标小区的该组的第一个成员，则调用更新模块707更新区域列表。第三判断模块706判断区域列表发生更新时，调用封装模块710将更新的区域列表封装到多媒体广播组播业务会话更新请求消息中。发送模块711将多媒体广播组播业务会话更新请求消息向多小区/多播协调实体发送。
通过上述方案，能够实现摆脱对集群通讯的地域限制，成员在LTE网络覆盖的范围内都可以进行集群通讯，大大提供集群通讯的灵活性。
参阅图8，图8是本发明多小区/多播协调实体一实施方式的结构示意图。本实施方式的多小区/多播协调实体包括：接收模块810、读出模块820、查找模块830以及发送模块840。
当MME向MCE发送多媒体广播组播业务会话开始请求消息时，接收模块810用于接收移动性管理实体所发送的多媒体广播组播业务会话开始请求消息，接收模块810将多媒体广播组播业务会话开始请求消息向读出模块820发送，其中，多媒体广播组播业务会话开始请求消息中承载了区域列表以及组播地址。
读出模块820用于接收多媒体广播组播业务会话开始请求消息，从多媒体广播组播业务会话开始请求消息中读出区域列表，读出模块820将区域列表向查找模块830发送。比如，在基于固定区域的集群通讯时，读出模块820从多媒体广播组播业务会话开始请求消息中读出作为区域列表的小区列表；在基于移动区域的集群通讯时，读出模块820从多媒体广播组播业务会话开始请求消息中读出作为区域列表的小区列表以及跟踪区列表。
查找模块830用于接收区域列表，根据区域列表查找相应的基站，查找模块830将查找到的基站向发送模块840发送。比如，在基于固定区域的集群通讯时，查找模块830根据小区列表查找到属于小区列表的基站；在基于移动区域的集群通讯时，查找模块830根据小区列表查找属于小区列表的基站，以及根据跟踪区列表查找属于跟踪区列表的基站。
发送模块840用于接收查找到的基站并将多媒体广播组播业务会话开始请求消息发送给基站，以使的基站能够加入到组播地址中，从而实现群组区域管理。
当MME向MCE发送多媒体广播组播业务会话更新请求消息时，接收模块810用于接收移动性管理实体所发送的多媒体广播组播业务会话更新请求消息，接收模块810将多媒体广播组播业务会话更新请求消息向读出模块820发送。
读出模块820用于接收多媒体广播组播业务会话更新请求消息，从多媒体广播组播业务会话更新请求消息中读出更新的区域列表。
查找模块830接收更新的区域列表，如果获取到的更新的区域列表的基站已经存在，查找模块830查找该基站并发送释放资源指示；如果获取到的更新的小区列表中的基站不存在，查找模块830查找相应的基站，并向该基站发送多媒体广播组播业务会话开始请求消息（不包括小区列表和跟踪区列表）；如果获取到的更新的跟踪列表中的跟踪区已经存在，查找模块830不作任何处理；如果获取到的更新的跟踪区列表中的跟踪区不存在，则查找模块830查找到相应的基站，并向该跟踪区内的基站发送多媒体广播组播业务会话开始请求消息（不包括小区列表和跟踪区列表）。
通过上述方案，能够实现摆脱对集群通讯的地域限制，成员在LTE网络覆盖的范围内都可以进行集群通讯，大大提供集群通讯的灵活性。
参阅图9，图9是本发明移动性管理实体再一实施方式的结构示意图。本实施方式的移动性管理实体包括：接收机910、处理器920、发送机930以及存储器940。其中，处理器920分别耦合接收机910、发送机930以及存储器940。
接收机910用于接收集群管理单元所发送的组标识、成员列表及多媒体广播组播业务网关所生成的组播地址。比如：在LTE网络覆盖的区域内的群组内的一个成员作为主讲者向集群管理单元提出了一个群组呼叫请求，集群管理单元接收到群组呼叫请求后，获得该群组的组标识，并在本地查询这个群组的所有成员的信息以获得成员列表。集群管理单元将组标识以及小区列表封装到群组呼叫会话请求消息中，并向MBMS网关发送。MBMS网关在接收到群组呼叫会话请求消息后，为这个群组生成一个组播地址，并将组播地址、组标识以及成员列表封装到群组会话开始请求消息中，并向MME发送，接收机910则接收群组会话开始请求消息从而接收集群管理单元所发送的组标识、成员列表及多媒体广播组播业务网关所生成的组播地址。
在接收到群组会话开始请求消息后，MME生成初始区域列表的方式有三种。在第一种方式中处理器920在接收到成员列表后立即生成初始区域列表，其中，立即是指MME在接收到成员列表后，不经过其它任何的步骤，在MME能够反应的最短时间内。在第二种方式中，处理器920判断是否所有的成员都处于连接态，如果不是所有的成员都处于连接态，MME一直等待，直到所有的成员都处于连接态；如果所有的成员都处于连接态，MME根据连接态的成员所在的小区生成小区列表，并把小区列表作为区域列表。在第三种方式中，处理器920判断是否超过设定的时间，如果超过设定的时间，通过查询成员列表查询成员的状态，并根据连接态的成员所在的小区生成属于区域列表的小区列表以及根据空闲态的成员所在的跟踪区生成属于区域列表的跟踪区列表，并把小区列表和跟踪区列表作为区域列表。处理器920将组播地址以及生成的区域列表封装到多媒体广播组播业务会话开始请求消息中，并将多媒体广播组播业务会话开始请求消息向发送机930发送。
在发送多媒体广播组播业务会话开始请求消息后，处理器920查询成员的状态是否发生了变化，在成员的状态发生了变化时，判断区域列表是否发生了更新。比如，原来属于跟踪区的一个组内成员从空闲态转为连接态时，则MME需要判断区域列表是否发生了更新。此时，处理器920查询成员的状态是否发生了变化，如果成员的状态发生了变化，判断区域列表是否发生了更新。如果该成员是跟踪区内的该组的最后一个成员，则判断区域列表发生更新；反之，则判断区域列表不发生更新；如果该成员是小区中的该组的第一个成员，则判断区域列表发生更新，反之则判断区域列表不发生更新。处理器920判断区域列表发生更新时，将更新的区域列表封装到多媒体广播组播业务会话更新请求消息中。
发送机930用于接收多媒体广播组播业务会话开始请求消息和多媒体广播组播业务会话更新请求消息，将多媒体广播组播业务会话开始请求消息或多媒体广播组播业务会话更新请求消息向MCE发送。
存储器940用于存储例程及数据。
切换时，如果接收机910接收到用户设备所发送的切换请求消息，则MME作为源MME，此时，处理器920判断用户设备是否为所属基站内的该组的最后一个成员，如果发出切换请求的成员是该组的最后一个成员，则更新区域列表。处理器920判断区域列表发生更新时，将更新的区域列表封装到多媒体广播组播业务会话更新请求消息中。发送机930将多媒体广播组播业务会话更新请求消息向MCE发送。
如果接收机910接收到前转重定位请求消息，则MME作为目标MME，处理器920判断用户设备是否为目标小区的该组的第一个成员，如果是目标小区的该组的第一个成员，则更新区域列表。处理器920判断小区列表发生更新时，将更新的区域列表封装到多媒体广播组播业务会话更新请求消息中。发送机930将多媒体广播组播业务会话更新请求消息向多小区/多播协调实体发送。
通过上述方案，能够实现摆脱对集群通讯的地域限制，成员在LTE网络覆盖的范围内都可以进行集群通讯，大大提供集群通讯的灵活性。
参阅图10，图10是本发明多小区/多播协调实体另一实施方式的结构示意图。本实施方式的多小区/多播协调实体包括：接收机1010、处理器1020、发送机1030以及存储器1040。其中，处理器1020分别耦接接收机1010、发送机1030以及存储器1040。
当MME向MCE发送多媒体广播组播业务会话开始请求消息时，接收机1010用于接收移动性管理实体所发送的多媒体广播组播业务会话开始请求消息，接收机1010将多媒体广播组播业务会话开始请求消息向处理器1020发送，其中，多媒体广播组播业务会话开始请求消息中承载了区域列表以及组播地址。
处理器1020用于接收多媒体广播组播业务会话开始请求消息，从多媒体广播组播业务会话开始请求消息中读出区域列表，比如，在基于固定区域的集群通讯时，处理器1020从多媒体广播组播业务会话开始请求消息中读出作为区域列表的小区列表；在基于移动区域的集群通讯时，处理器1020从多媒体广播组播业务会话开始请求消息中读出作为区域列表的小区列表以及跟踪区列表。处理器1020根据区域列表查找相应的基站，处理器1020将查找到的基站向发送机1030发送。比如，在基于固定区域的集群通讯时，处理器1020根据小区列表查找到属于小区列表的基站；在基于移动区域的集群通讯时，处理器1020根据小区列表查找属于小区列表的基站，以及根据跟踪区列表查找属于跟踪区列表的基站。
发送机1030用于接收查找到的基站并将多媒体广播组播业务会话开始请求消息发送给基站，以使的基站能够加入到组播地址中，从而实现群组区域管理。
存储器1040用于存储程序及数据。
当MME向MCE发送多媒体广播组播业务会话更新请求消息时，接收机1010用于接收移动性管理实体所发送的多媒体广播组播业务会话更新请求消息，接收机1010将多媒体广播组播业务会话更新请求消息向处理器1020发送。
处理器1020用于接收多媒体广播组播业务会话更新请求消息，从多媒体广播组播业务会话更新请求消息中读出更新的区域列表。如果获取到的更新的小区列表中的基站已经存在，处理器1020查找该基站并通过发送机1030发送释放资源指示；如果获取到的更新的小区列表中的基站不存在，处理器1020查找相应的基站，并通过发送机1030向该基站发送多媒体广播组播业务会话开始请求消息（不包括小区列表和跟踪区列表）；如果获取到的更新的跟踪列表中的跟踪区已经存在，处理器1020不作任何处理；如果获取到的更新的跟踪区列表中的跟踪区不存在，则处理器1020查找到相应的基站，并通过发送机1030向该跟踪区内的基站发送多媒体广播组播业务会话开始请求消息（不包括小区列表和跟踪区列表）。
通过上述方案，能够实现摆脱对集群通讯的地域限制，成员在LTE网络覆盖的范围内都可以进行集群通讯，大大提供集群通讯的灵活性。
基于上述移动性管理实体和多小区/多播协调实体，本申请还提供了一种群组区域管理系统，包括集群管理单元，多媒体广播组播业务网关、移动性管理实体、多小区/多播协调实体以及基站，其中，集群管理单元分别耦接多媒体广播组播业务网关、移动性管理实体以及基站，多媒体广播组播业务网关分别耦接移动性管理实体以及基站，移动性管理实体分别耦接多小区/多播协调实体以及基站，所述多小区/多播协调实体耦接基站，具体请结合上述的描述，此处不重复描述。
在本申请所提供的几个实施方式中，应该理解到，所揭露的系统，装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施方式仅仅是示意性的，例如，所述模块或单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施方式方案的目的。
另外，在本申请各个实施方式中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备（可以是个人计算机，服务器，或者网络设备等）或处理器（processor）执行本申请各个实施方式所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器（ROM，Read-Only Memory）、随机存取存储器（RAM，Random Access Memory）、磁碟或者光盘等各种可以存储程序代码的介质。

Claims (44)

  1. 一种群组区域管理方法，其特征在于，包括如下步骤：
    接收多媒体广播组播业务网关所生成的组播地址；
    将所述组播地址以及区域列表封装到多媒体广播组播业务会话开始请求消息中；
    将所述多媒体广播组播业务会话开始请求消息向多小区/多播协调实体MCE发送，以供所述MCE根据所述区域列表查找到相应的基站，并将所述多媒体广播组播业务会话开始请求消息发送给相应的基站，使所述基站能够加入到所述组播地址中，从而实现群组区域管理。
  2. 根据权利要求1所述的方法，其特征在于，所述方法包括：
    接收集群管理单元所发送的组标识；
    将所述组标识封装到所述多媒体广播组播业务会话开始请求消息中，以供所述MCE通过所述基站向小区内的用户设备发送所述组标识，以供所述用户设备判断是否与所述基站建立连接。
  3. 根据权利要求1所述的方法，其特征在于，所述将所述组播地址以及区域列表封装到多媒体广播组播业务会话开始请求消息中步骤之前包括如下步骤：
    接收集群管理单元所发送的小区列表，并将所述小区列表作为区域列表。
  4. 根据权利要求1所述的方法，其特征在于，所述将所述组播地址以及区域列表封装到多媒体广播组播业务会话开始请求消息中步骤之前包括如下步骤：
    接收集群管理单元所发送的成员列表；
    根据所述成员列表查询成员的状态，并根据连接态的成员所在的小区生成小区列表以及根据空闲态的成员所在的跟踪区生成跟踪区列表，并将所述小区列表和所述跟踪区列表作为区域列表。
  5. 根据权利要求4所述的方法，其特征在于，所述根据成员列表查询成员的状态，并根据连接态的成员所在的小区生成小区列表以及根据空闲态的成员所在的跟踪区生成跟踪区列表步骤包括如下步骤：
    在接收到所述成员列表后，立即根据所述成员列表查询成员的状态，并根据连接态的成员所在的小区生成小区列表以及根据空闲态的成员所在的跟踪区生成跟踪区列表。
  6. 根据权利要求4所述的方法，其特征在于，所述根据成员列表查询成员的状态，并根据连接态的成员所在的小区生成小区列表以及根据空闲态的成员所在的跟踪区生成跟踪区列表步骤包括如下步骤：
    根据成员列表查询成员的状态，并判断是否所有的成员都处于连接态；
    如果所有的成员都处于连接态，根据连接态的成员所在的小区生成小区列表。
  7. 根据权利要求4所述的方法，其特征在于，所述根据成员列表查询成员的状态步骤之后，所述根据连接态的成员所在的小区生成小区列表以及根据空闲态的成员所在的跟踪区生成跟踪区列表步骤之前包括如下步骤：
    判断是否超过设定的时间；
    如果超过设定的时间，根据成员列表查询成员的状态，并根据连接态的成员所在的小区生成小区列表以及根据空闲态的成员所在的跟踪区生成跟踪区列表。
  8. 根据权利要求4所述的方法，其特征在于，所述将多媒体广播组播业务会话开始请求消息向MCE发送步骤之后包括：
    判断所述区域列表是否发生了更新；
    如果所述区域列表发生了更新，则将更新的所述区域列表封装到多媒体广播组播业务会话更新请求消息中，并将所述多媒体广播组播业务会话更新请求消息向所述MCE发送。
  9. 根据权利要求8所述的方法，其特征在于，所述判断小区列表和所述跟踪区列表是否发生了更新步骤还包括如下步骤：
    查询成员的状态是否发生了变化；
    如果成员的状态发生了变化，则判断所述区域列表是否发生了更新。
  10. 根据权利要求8所述的方法，其特征在于，所述判断小区列表和所述跟踪区列表是否发生了更新步骤之前还包括如下步骤：
    当接收到用户设备所发送的切换请求消息时，判断所述用户设备是否为所属基站内的该组的最后一个成员；
    如果所述用户设备是所属基站内的该组的最后一个成员，更新所述区域列表。
  11. 根据权利要求8所述的方法，其特征在于，所述判断小区列表和所述跟踪区列表是否发生了更新步骤之前还包括如下步骤：
    如果接收到前转重定位请求消息，则判断用户设备是否为目标小区的该组的第一个成员；
    如果是目标小区的该组的第一个成员，更新所述区域列表。
  12. 一种群组区域管理方法，其特征在于，包括如下步骤：
    接收移动性管理实体所发送的多媒体广播组播业务会话开始请求消息，其中，所述多媒体广播组播业务会话开始请求消息中承载了区域列表以及组播地址；
    从所述多媒体广播组播业务会话开始请求消息中读出区域列表；
    根据所述区域列表查找相应的基站，并将所述多媒体广播组播业务会话开始请求消息发送给所述基站，以使的所述基站能够加入到所述组播地址中，从而实现群组区域管理。
  13. 根据权利要求12所述的方法，其特征在于，所述从多媒体广播组播业务会话开始请求消息中读出区域列表步骤包括：
    从多媒体广播组播业务会话开始请求消息中读出小区列表以及跟踪区列表；
    所述根据区域列表查找相应的基站步骤包括：
    根据所述小区列表查找属于所述小区列表的基站，以及根据所述跟踪区列表查找属于所述跟踪区列表的基站。
  14. 根据权利要求13所述的方法，其特征在于，所述方法包括：
    接收移动性管理实体所发送多媒体广播组播业务会话更新请求消息；
    从所述多媒体广播组播业务会话更新请求消息中读出更新的区域列表。
  15. 一种移动性管理实体，其特征在于，包括：接收模块、封装模块以及发送模块，
    所述接收模块用于接收多媒体广播组播业务网关所生成的组播地址，所述接收模块将所述组播地址向所述封装模块发送；
    所述封装模块用于接收所述组播地址并将所述组播地址以及区域列表封装到多媒体广播组播业务会话开始请求消息中，所述封装模块用于将所述多媒体广播组播业务会话开始请求消息向所述发送模块发送；
    所述发送模块用于接收所述多媒体广播组播业务会话开始请求消息，将所述多媒体广播组播业务会话开始请求消息向MCE发送，以供所述MCE根据所述区域列表查找到相应的基站并将所述多媒体广播组播业务会话开始请求消息发送给相应的基站，使所述基站能够加入到所述组播地址中，从而实现群组区域管理。
  16. 根据权利要求15所述的移动性管理实体，其特征在于，
    所述接收模块还用于接收集群管理单元所发送的组标识，所述接收模块将所述组标识向所述封装模块发送；
    所述封装模块还用于将所述组标识封装到多媒体广播组播业务会话开始请求消息中，所述封装模块将所述多媒体广播组播业务会话开始请求消息向所述发送模块发送；
    所述发送模块用于接收所述多媒体广播组播业务会话开始请求消息，并将所述多媒体广播组播业务会话开始请求消息向MCE发送，以供所述MCE通过所述基站向小区内的用户设备发送所述组标识，以供所述用户设备判断是否与所述基站建立连接。
  17. 根据权利要求15所述的移动性管理实体，其特征在于，
    所述接收模块还用于接收集群管理单元所发送的小区列表，并将所述小区列表作为区域列表。
  18. 根据权利要求15所述的移动性管理实体，其特征在于，所述移动性管理实体还包括生成模块；
    所述接收模块还用于接收集群管理单元所发送的成员列表，所述接收模块将所述成员列表向所述生成模块发送；
    所述生成模块用于接收所述成员列表，根据所述成员列表查询成员的状态，并根据连接态的成员所在的小区生成小区列表以及根据空闲态的成员所在的跟踪区生成跟踪区列表，并将所述小区列表和所述跟踪区列表作为区域列表。
  19. 根据权利要求18所述的移动性管理实体，其特征在于，所述生成模块还用于在接收到成员列表后，立即根据成员列表查询成员的状态，并根据连接态的成员所在的小区生成小区列表以及根据空闲态的成员所在的跟踪区生成跟踪区列表。
  20. 根据权利要求18所述的移动性管理实体，其特征在于，所述移动性管理实体还包括第一判断模块；
    所述第一判断模块用于根据成员列表查询成员的状态，并判断是否所有的成员都处于连接态，所述第一判断模块将所述第一判断结果向所述生成模块发送；
    所述生成模块还用于接收所述第一判断结果，在所有的成员都处于连接态时，根据连接态的成员所在的小区生成小区列表。
  21. 根据权利要求18所述的移动性管理实体，其特征在于，所述移动性管理实体还包括第二判断模块；
    所述第二判断模块用于判断是否超过设定的时间，所述第二判断模块将所述第二判断结果向所述生成模块发送；
    所述生成模块还用于接收所述第二判断结果，在超过设定的时间时，根据成员列表查询成员的状态，并根据连接态的成员所在的小区生成小区列表以及根据空闲态的成员所在的跟踪区生成跟踪区列表。
  22. 根据权利要求18所述的移动性管理实体，其特征在于，所述移动性管理实体还包括第三判断模块，
    所述第三判断模块用于判断所述区域列表是否发生了更新，所述第三判断模块将第三判断结果向所述封装模块发送；
    所述封装模块还用于接收第三判断结果，在所述区域列表发生了更新时，将更新的所述区域列表封装到多媒体广播组播业务会话更新请求消息中，所述封装模块将所述多媒体广播组播业务会话更新请求消息向所述发送模块发送；
    所述发送模块还用于接收所述多媒体广播组播业务会话更新请求消息，将所述多媒体广播组播业务会话更新请求消息向所述MCE发送。
  23. 根据权利要求22所述的移动性管理实体，其特征在于，所述移动性管理实体还包括查询模块，
    所述查询模块用于查询成员的状态是否发生了变化，所述查询模块将查询结果向所述第三判断模块发送；
    所述第三判断模块还用于接收所述查询结果，在成员的状态发生了变化时，判断所述区域列表是否发生了更新。
  24. 根据权利要求22所述的移动性管理实体，其特征在于，所述移动性管理实体还包括第四判断模块，
    所述第四判断模块用于在接收到用户设备所发送的切换请求消息时，判断所述用户设备是否为所属基站内的该组的最后一个成员，所述第四判断模块将第四判断结果向所述更新模块发送；
    所述更新模块还用于接收所述第四判断结果，在是所属基站内的该组的最后一个成员时，更新所述区域列表。
  25. 根据权利要求22所述的移动性管理实体，其特征在于，所述移动性管理实体还包括第五判断模块，
    所述第五判断模块用于在接收到前转重定位请求消息，判断用户设备是否为目标小区的该组的第一个成员，所述第五判断模块将第五判断结果向所述更新模块发送；
    所述更新模块还用于接收所述第五判断结果，在是目标小区的该组的第一个成员时，更新所述区域列表。
  26. 一种MCE，其特征在于，包括接收模块，读出模块、查找模块以及发送模块，
    所述接收模块用于接收移动性管理实体所发送的多媒体广播组播业务会话开始请求消息，所述接收模块将所述多媒体广播组播业务会话开始请求消息向所述读出模块发送，其中，所述多媒体广播组播业务会话开始请求消息中承载了区域列表以及组播地址；
    所述读出模块用于接收所述多媒体广播组播业务会话开始请求消息，从所述多媒体广播组播业务会话开始请求消息中读出区域列表，所述读出模块将所述区域列表向所述查找模块发送；
    所述查找模块用于接收所述区域列表，根据所述区域列表查找相应的基站，所述查找模块将查找到的基站向所述发送模块发送；
    所述发送模块用于接收查找到的基站并将所述多媒体广播组播业务会话开始请求消息发送给所述基站，以使的所述基站能够加入到所述组播地址中，从而实现群组区域管理。
  27. 根据权利要求26所述的MCE，其特征在于，
    所述读出模块还用于从多媒体广播组播业务会话开始请求消息中读出小区列表以及跟踪区列表，所述读出模块将小区列表以及跟踪区列表向所述查找模块发送；
    所述查找模块还用于接收所述小区列表以及跟踪区列表，根据所述小区列表查找属于所述小区列表的基站，以及根据所述跟踪区列表查找属于所述跟踪区列表的基站。
  28. 根据权利要求26所述的MCE，其特征在于，
    所述接收模块还用于接收移动性管理实体所发送多媒体广播组播业务会话更新请求消息，所述接收模块将所述多媒体广播组播业务会话更新请求消息向所述读出模块发送；
    所述读出模块还用于接收所述多媒体广播组播业务会话更新请求消息，从所述多媒体广播组播业务会话更新请求消息中读出更新的小区列表以及更新的跟踪区列表。
  29. 一种移动性管理实体，其特征在于，包括：接收机、处理器、发送机以及存储器，
    所述接收机用于接收多媒体广播组播业务网关所生成的组播地址，所述接收机将所述组播地址向所述处理器发送；
    所述处理器用于接收所述组播地址并将所述组播地址以及区域列表封装到多媒体广播组播业务会话开始请求消息中，所述处理器用于将所述多媒体广播组播业务会话开始请求消息向所述发送机发送；
    所述发送机用于接收所述多媒体广播组播业务会话开始请求消息，将所述多媒体广播组播业务会话开始请求消息向MCE发送，以供所述MCE根据所述区域列表查找到相应的基站并将所述多媒体广播组播业务会话开始请求消息发送给相应的基站，使所述基站能够加入到所述组播地址中，从而实现群组区域管理；
    所述存储器用于存储例程及数据。
  30. 根据权利要求29所述的移动性管理实体，其特征在于，
    所述接收机还用于接收集群管理单元所发送的组标识，所述接收机将所述组标识向所述处理器发送；
    所述处理器还用于将所述组标识封装到多媒体广播组播业务会话开始请求消息中，所述处理器将所述多媒体广播组播业务会话开始请求消息向所述发送机发送；
    所述发送机用于接收所述多媒体广播组播业务会话开始请求消息，并向MCE发送，以供所述MCE通过所述基站向小区内的用户设备发送所述组标识，以供所述用户设备判断是否与所述基站建立连接。
  31. 根据权利要求29所述的移动性管理实体，其特征在于，
    所述接收机还用于接收集群管理单元所发送的小区列表，并将所述小区列表作为区域列表。
  32. 根据权利要求29所述的移动性管理实体，其特征在于，
    所述接收机还用于接收集群管理单元所发送的成员列表，所述接收机将所述成员列表向所述处理器发送；
    所述处理器用于接收所述成员列表，根据所述成员列表查询成员的状态，并根据连接态的成员所在的小区生成小区列表以及根据空闲态的成员所在的跟踪区生成跟踪区列表，并将所述小区列表和所述跟踪区列表作为区域列表。
  33. 根据权利要求32所述的移动性管理实体，其特征在于，所述处理器还用于在接收到所述成员列表后，立即根据所述成员列表查询成员的状态，并根据连接态的成员所在的小区生成小区列表以及根据空闲态的成员所在的跟踪区生成跟踪区列表。
  34. 根据权利要求32所述的移动性管理实体，其特征在于，所述处理器还用于根据成员列表查询成员的状态，判断是否所有的成员都处于连接态，在所有的成员都处于连接态时，根据连接态的成员所在的小区生成小区列表。
  35. 根据权利要求32所述的移动性管理实体，其特征在于，所述处理器还用于判断是否超过设定的时间，在超过设定的时间时，根据成员列表查询成员的状态，并根据连接态的成员所在的小区生成小区列表以及根据空闲态的成员所在的跟踪区生成跟踪区列表。
  36. 根据权利要求32所述的移动性管理实体，其特征在于，
    所述处理器还用于判断所述小区列表和所述跟踪区列表是否发生了更新，在所述区域列表发生了更新时，将更新的所述区域列表封装到多媒体广播组播业务会话更新请求消息中，所述处理器将所述多媒体广播组播业务会话更新请求消息向所述发送机发送；
    所述发送机还用于接收所述多媒体广播组播业务会话更新请求消息，将所述多媒体广播组播业务会话更新请求消息向所述MCE发送。
  37. 根据权利要求36所述的移动性管理实体，其特征在于，所述处理器还用于查询成员的状态是否发生了变化，在成员的状态发生了变化时，判断所述区域列表是否发生了更新。
  38. 根据权利要求36所述的移动性管理实体，其特征在于，所述处理器还用于在接收到用户设备所发送的切换请求消息时，判断所述用户设备是否为所属基站内的该组的最后一个成员，在是所属基站内的该组的最后一个成员时，更新所述区域列表。
  39. 根据权利要求36所述的移动性管理实体，其特征在于，所述处理器还用于在接收到前转重定位请求消息时，判断用户设备是否为目标小区的该组的第一个成员，在是目标小区的该组的第一个成员时，更新所述区域列表。
  40. 一种MCE，其特征在于，包括接收机、处理器、发送机以及存储器，
    所述接收机用于接收移动性管理实体所发送的多媒体广播组播业务会话开始请求消息，所述接收机将所述多媒体广播组播业务会话开始请求消息向所述处理器发送，其中，所述多媒体广播组播业务会话开始请求消息中承载了区域列表以及组播地址；
    所述处理器用于接收所述多媒体广播组播业务会话开始请求消息，从所述多媒体广播组播业务会话开始请求消息中读出区域列表，根据所述区域列表查找相应的基站，所述处理器将查找到的基站向所述发送机发送；
    所述发送机用于接收查找到的基站并将所述多媒体广播组播业务会话开始请求消息发送给所述基站，以使的所述基站能够加入到所述组播地址中，从而实现群组区域管理；
    所述存储器用于存储例程及数据。
  41. 根据权利要求40所述的MCE，其特征在于，所述处理器还用于从多媒体广播组播业务会话开始请求消息中读出小区列表以及跟踪区列表，根据所述小区列表查找属于所述小区列表的基站，以及根据所述跟踪区列表查找属于所述跟踪区列表的基站。
  42. 根据权利要求41所述的MCE，其特征在于，
    所述接收机还用于接收移动性管理实体所发送多媒体广播组播业务会话更新请求消息，所述接收机将所述多媒体广播组播业务会话更新请求消息向所述处理器发送；
    所述处理器还用于接收所述多媒体广播组播业务会话更新请求消息，从所述多媒体广播组播业务会话更新请求消息中读出更新的区域列表。
  43. 一种群组区域管理系统，其特征在于，包括集群管理单元，多媒体广播组播业务网关、移动性管理实体、MCE以及基站，其中，集群管理单元分别耦接多媒体广播组播业务网关、移动性管理实体以及基站，多媒体广播组播业务网关分别耦接移动性管理实体以及基站，移动性管理实体分别耦接MCE以及基站，所述MCE耦接基站，移动性管理实体为如权利要求15-25或29-39任一权利要求所述的移动性管理实体。
  44. 根据权利要求43所述的群组区域管理系统，其特征在于，所述MCE为如权利要求26-28或40-42任一权利要求所述的MCE。
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