WO2013104344A1 - 一种集群通信的方法、装置及系统 - Google Patents

一种集群通信的方法、装置及系统 Download PDF

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Publication number
WO2013104344A1
WO2013104344A1 PCT/CN2013/072405 CN2013072405W WO2013104344A1 WO 2013104344 A1 WO2013104344 A1 WO 2013104344A1 CN 2013072405 W CN2013072405 W CN 2013072405W WO 2013104344 A1 WO2013104344 A1 WO 2013104344A1
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WIPO (PCT)
Prior art keywords
transmission channel
shared transmission
cluster
base station
terminal
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PCT/CN2013/072405
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English (en)
French (fr)
Inventor
熊春山
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华为技术有限公司
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Publication date
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Publication of WO2013104344A1 publication Critical patent/WO2013104344A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/40Connection management for selective distribution or broadcast

Definitions

  • a trunking communication system is an important branch of a mobile communication system. It is a command and transfer system in dedicated mobile communication with dual functions of switching and control.
  • the trunking communication system provides basic business functions such as group call, call preemption, dynamic reorganization, etc.
  • the trunking communication system has become an important part of mobile communication. component
  • Embodiments of the present invention provide a method for trunking communication, which can save transmission resources of cluster data.
  • the embodiments of the present invention also provide corresponding devices and systems.
  • a method of cluster communication including:
  • the packet data network gateway establishes a first shared transmission channel from the cluster server to the packet data network gateway;
  • the packet data network gateway passes the received data through a second shared transmission channel,
  • the third shared transmission channel and the fourth shared transmission channel are sent to the cluster terminal, so that the same data received by all the cluster terminals is only transmitted once on the common path of the shared transmission channel established between the cluster server and the cluster terminal;
  • the second shared transmission channel is a shared transmission channel of the packet data network gateway to the serving gateway;
  • the third shared transmission channel is a shared transmission channel of the serving gateway to the base station;
  • the fourth shared transmission channel And is a shared transmission channel of the base station to a cell where the cluster terminal is located.
  • a method of cluster communication including:
  • the mobility management entity establishes a third shared transmission channel from the serving gateway to the base station, and the third shared transmission channel is configured to transmit data forwarded by the serving gateway, where the data is delivered by the cluster server and passes through the first
  • the shared transmission channel, the second shared transmission channel, the third shared transmission channel, and the fourth shared transmission channel are transmitted to the cluster terminal, so that all the cluster terminals receive the same data in the shared transmission channel established between the cluster server and the cluster terminal. Only once on the common path;
  • the first shared transmission channel is a shared transmission channel of the cluster server to the packet data network gateway;
  • the second shared transmission channel is a shared transmission channel of the packet data network gateway to a serving gateway;
  • the fourth shared transmission channel is a shared transmission channel of the base station to the cell where the cluster terminal is located.
  • a method of cluster communication including:
  • the serving gateway establishes a second shared transmission channel from the packet data gateway to the serving gateway; the serving gateway receives data forwarded by the packet data network gateway from the second shared transmission channel, where the data is sent by the cluster server And passing to the packet data network gateway through the first shared transmission channel;
  • the serving gateway sends the received data to the cluster terminal through the third shared transmission channel and the fourth shared transmission channel, so that the same data received by all the cluster terminals is shared transmission between the cluster server and the cluster terminal.
  • the first shared transmission channel is a shared transmission channel of the cluster server to the packet data network gateway;
  • the third shared transmission channel is a shared transmission channel of the serving gateway to the base station;
  • the fourth shared transmission channel is a shared transmission channel of the cell where the base station is located to the cluster terminal.
  • the base station establishes a fourth shared transmission channel from the base station to the cell where the cluster terminal is located, and all the cluster terminals in each cell share the fourth shared transmission channel;
  • the base station receives data forwarded by the serving gateway from the third shared transmission channel, where the data is sent by the cluster server, and is transmitted to the base station through the first shared transmission channel, the second shared transmission channel, and the third shared transmission channel;
  • the base station sends the received data to the cluster terminal through the fourth shared transmission channel, so that the same data received by all the cluster terminals is transmitted only once on the common path of the shared transmission channel established between the cluster server and the cluster terminal;
  • the first shared transmission channel is a shared transmission channel of the cluster server to the packet data gateway;
  • the second shared transmission channel is a shared transmission channel of the packet data network gateway to the serving gateway;
  • the third shared transmission channel is a service The shared transmission channel from the gateway to the base station.
  • a method of cluster communication including:
  • the cluster terminal receives data forwarded by the base station from the fourth shared transmission channel, where the data is sent by the cluster server, and is transmitted through the first shared transmission channel, the second shared transmission channel, the third shared transmission channel, and the fourth shared transmission channel.
  • the same data received by all cluster terminals is only transmitted once on the common path of the shared transmission channel established between the cluster server and the cluster terminal;
  • the first shared transmission channel is a shared transmission channel of the cluster server to the packet data network gateway;
  • the second shared transmission channel is a shared transmission channel of the packet data network gateway to the serving gateway;
  • the third shared transmission channel is The shared transmission channel of the serving gateway to the base station;
  • the fourth shared transmission channel is a shared transmission channel of the cell where the base station is located to the cluster terminal.
  • a packet data network gateway comprising:
  • a first channel establishing unit configured to establish a first shared transmission channel from the cluster server to the packet data network gateway;
  • a first receiving unit configured to receive data sent by the cluster server from the first shared transmission channel established by the first channel establishing unit
  • a first sending unit configured to send data received by the first receiving unit to the cluster terminal by using the second shared transmission channel, the third shared transmission channel, and the fourth shared transmission channel, so that The same data received by all the cluster terminals is transmitted only once on the common path of the shared transmission channel established between the cluster server and the cluster terminal;
  • the second shared transmission channel is a shared transmission of the packet data network gateway to the serving gateway.
  • the third shared transmission channel is a shared transmission channel of the serving gateway to the base station; and the fourth shared transmission channel is a shared transmission channel of the cell where the base station is located to the cluster terminal.
  • a mobility management entity that includes:
  • a second channel establishing unit configured to establish a third shared transmission channel from the serving gateway to the base station, where the third shared transmission channel is used to transmit data forwarded by the serving gateway, where the data is sent by the cluster server and passed
  • the first shared transmission channel, the second shared transmission channel, the third shared transmission channel, and the fourth shared transmission channel are transmitted to the cluster terminal, so that the same data received by all the cluster terminals is shared transmission between the cluster server and the cluster terminal. Pass only once on the common path of the channel;
  • the first shared transmission channel is a shared transmission channel of the cluster server to the packet data network gateway;
  • the second shared transmission channel is a shared transmission channel of the packet data network gateway to the serving gateway;
  • the fourth shared transmission channel is The shared transmission channel from the base station to the cell where the cluster terminal is located.
  • a service gateway including:
  • a third channel establishing unit configured to establish a second shared transmission channel from the packet data network gateway to the serving gateway
  • a third receiving unit configured to receive data forwarded by the packet data network gateway from the second shared transmission channel established by the third channel establishing unit, where the data is sent by the cluster server, and is transmitted to the first shared transmission channel Packet data network gateway;
  • the first shared transmission channel is a shared transmission channel of the cluster server to the packet data network gateway; the third shared transmission channel is a serving gateway to the base station.
  • the shared transmission channel is the shared transmission channel of the cell where the base station is located to the cluster terminal.
  • a fourth channel establishing unit configured to establish a fourth shared transmission channel from the base station to the cell where the cluster terminal is located, where all the cluster terminals in each cell share a fourth shared transmission channel;
  • a fourth receiving unit configured to receive data forwarded by the serving gateway from the third shared transmission channel, where the data is sent by the cluster server, and is transmitted through the first shared transmission channel, the second shared transmission channel, and the third shared transmission channel.
  • a fourth sending unit configured to send, by the fourth receiving unit, data to the cluster terminal by using a fourth shared transmission channel established by the fourth channel establishing unit, so that all the cluster terminals receive the same data in the cluster server to the cluster
  • the shared transmission channel established between the terminals is only transmitted once; wherein the first shared transmission channel is a shared transmission channel of the cluster server to the packet data network gateway; and the second shared transmission channel is a packet data network gateway.
  • a shared transmission channel to the serving gateway; the fourth shared transmission channel is a shared transmission channel of the cell where the base station is located to the cluster terminal.
  • a terminal comprising:
  • a fifth receiving unit configured to receive data forwarded by the base station from the fourth shared transmission channel, where the data is sent by the cluster server, and passes through the first shared transmission channel, the second shared transmission channel, the third shared transmission channel, and the first
  • the four shared transmission channels are transmitted to the cluster terminal, so that the same data received by all the cluster terminals is transmitted only once on the common path of the shared transmission channel established between the cluster server and the cluster terminal; wherein, the first shared transmission channel is a shared transmission channel of the cluster server to the packet data network gateway; the second shared transmission channel is a shared transmission channel of the packet data network gateway to the serving gateway; and the third shared transmission channel is a shared transmission channel of the serving gateway to the base station;
  • the fourth shared transmission channel is a shared transmission channel of the cell where the base station is located to the cluster terminal.
  • a trunking communication system comprising:
  • the packet data network gateway establishes a first shared transmission channel from the cluster server to the packet data network gateway;
  • the serving gateway establishes a second shared transmission channel from the packet data network gateway to the serving gateway;
  • the mobility management entity establishes a third shared transmission channel from the serving gateway to the base station;
  • the base station establishes a fourth shared transmission channel from the base station to the cell where the cluster terminal is located; Receiving, by the packet data network gateway, data sent by the cluster server from the first shared transmission channel;
  • the terminal receives the data from the fourth shared transmission channel, where the data is sent by the cluster server, and is transmitted through the first shared transmission channel, the second shared transmission channel, the third shared transmission channel, and the fourth shared transmission channel.
  • the same data received by all cluster terminals is only transmitted once on the common path of the shared transmission channel established between the cluster server and the cluster terminal.
  • the embodiment of the present invention uses a packet data network gateway to establish a first shared transmission channel from the cluster server to the packet data network gateway; the packet data network gateway receives data sent by the cluster server from the first shared transmission channel; The packet data network gateway sends the received data to the cluster terminal through the second shared transmission channel, the third shared transmission channel, and the fourth shared transmission channel, so that the same data received by all the cluster terminals is in the cluster server to the cluster terminal.
  • the shared path of the shared transmission channel is only transmitted once; wherein the second shared transmission channel is a shared transmission channel of the packet data network gateway to the SGW; and the third shared transmission channel is a shared transmission of the SGW to the base station.
  • the fourth shared transmission channel is a shared transmission channel of the cell where the base station is located to the cluster terminal.
  • FIG. 1 is a schematic diagram of an embodiment of a method for trunking communication according to an embodiment of the present invention
  • FIG. 2 is a tree diagram of a shared transmission channel provided in an embodiment of a method for trunking communication according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of another embodiment of a method for trunking communication according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of another embodiment of a method for trunking communication according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of another embodiment of a method for trunking communication according to an embodiment of the present invention
  • FIG. 7 is a schematic diagram of another embodiment of a method for trunking communication according to an embodiment of the present invention
  • FIG. 9 is a schematic diagram of an embodiment of a mobility management entity in an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of an embodiment of a mobility management entity according to an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of an embodiment of a service gateway in an embodiment of the present invention.
  • FIG. 12 is a schematic diagram of another embodiment of a service gateway according to an embodiment of the present invention.
  • FIG. 13 is a schematic diagram of an embodiment of a base station according to an embodiment of the present invention.
  • the embodiments of the present invention provide a method for trunking communication, which can save transmission resources of cluster data.
  • the embodiments of the present invention also provide corresponding devices and systems.
  • Embodiments of the present invention also provide corresponding devices and systems. The details are described below.
  • PGW Packet Data Network Gateway
  • SGW Serving Gateway
  • MME Mobility Management Entity
  • an embodiment of a method for trunk communication provided by an embodiment of the present invention includes:
  • the packet data network gateway establishes a first shared transmission channel from the cluster server to the packet data network gateway.
  • the PGW Before receiving the data sent by the server, the PGW further includes receiving a request for joining the cluster communication group triggered by the terminal of the contracted cluster communication group or the mobility management entity MME; and joining the cluster communication group according to the received request to join the cluster communication group
  • the cluster terminal of the group establishes a shared transmission channel from the cluster server to the PGW, and the terminal that subscribes to the cluster communication group joins the cluster communication group and is called a cluster terminal;
  • the method may be: receiving a request for establishing a shared transmission channel triggered by the cluster server; sending a response message for establishing a shared transmission channel to the cluster server, and establishing a shared transmission channel from the cluster server to the PGW for the cluster terminal joining the cluster communication group;
  • the shared transmission channel from the cluster server to the PGW is referred to as a first shared transmission channel.
  • the SGW establishes a shared transmission channel from the PGW to the SGW, and the MME establishes a shared transmission channel from the SGW to the base station.
  • the shared transmission channel from the PGW to the SGW is called a shared transmission channel
  • the shared transmission channel from the SGW to the base station is a third shared transmission channel
  • the base station allocates the same air interface shared transmission channel for all the cluster terminals in the same cell; if there are many cells in the coverage of the base station, all the cluster terminals of each cell correspond to one air interface shared transmission channel;
  • the base station under the base station refers to all the cluster terminals of a cell under the base station, and the shared transmission channel from the base station to the cell where the cluster terminal is located is a four shared transmission channel. .
  • the cluster server cluster server After the shared transmission channel from the cluster server to the cluster terminal is established, the cluster server cluster server first sends the data to the first shared transmission channel, through the first shared transmission channel, the second shared transmission channel, and the third shared transmission channel.
  • the fourth shared transmission channel sends data to the cluster terminal.
  • the packet data network gateway receives data sent by the cluster server from the first shared transmission channel, where the packet data network gateway passes the received data through a second shared transmission channel, a third shared transmission channel, and The fourth shared transmission channel is sent to the cluster terminal, so that the same data received by all the cluster terminals is transmitted only once on the common path of the shared transmission channel established between the cluster server and the cluster terminal.
  • the PGW After receiving the data from the first shared transmission channel, the PGW sends data to the SGW through the second shared transmission channel between the PGW and the serving gateway SGW.
  • the SGW may have one or more, if there are multiple SGWs, then The same data is sent to each SGW through the second shared transmission channel at the PGW.
  • the SGW After the data is sent to the SGW, the SGW sends the data to the base station through the SGW to the third shared transmission channel of the base station, and the base station passes through the base station.
  • the fourth shared transmission channel of the cell where the cluster terminal is located sends data to the cluster terminal. For details, see Figure 2. Line understanding.
  • the common path of the shared transmission channel established between the cluster server and the terminal that joins the cluster communication group is specifically:
  • the shared transmission channel from the cluster server to the PGW is a common path of all cluster terminals.
  • the shared transmission channel of the PGW to the SGW is a common path of all the cluster terminals in the same SGW.
  • the shared transmission channel of the SGW to the base station is a common path of all the cluster terminals under the base station
  • the embodiment of the present invention uses a packet data network gateway to establish a first shared transmission channel from the cluster server to the packet data network gateway; the packet data network gateway receives data sent by the cluster server from the first shared transmission channel; The packet data network gateway sends the received data to the cluster terminal through the second shared transmission channel, the third shared transmission channel, and the fourth shared transmission channel, so that the same data received by all the cluster terminals is in the cluster server to the cluster terminal.
  • the shared path of the shared transmission channel is only transmitted once; wherein the second shared transmission channel is a shared transmission channel of the packet data network gateway to the SGW; and the third shared transmission channel is a shared transmission of the SGW to the base station.
  • the fourth shared transmission channel is a shared transmission channel of the cell where the base station is located to the cluster terminal.
  • the shared transmission channel from the cluster server to the mobile cluster terminal is updated.
  • the specific operation of updating the transmission channel depends on the specific situation, such as:
  • the cluster terminal moves to another cell of the original base station, if the cell in which the cluster terminal is located after the original base station is mobile has established an air interface shared transmission channel, the shared channel is used. Otherwise, the base station establishes an air interface shared transmission channel for the cell;
  • the cluster terminal moves to another base station under the same SGW, if the base station has an air interface shared transmission channel for the cell in which the cluster terminal is located, the shared channel is used, otherwise the base station is the cluster terminal.
  • the cell in which the cell is located establishes an air interface shared transmission channel;
  • the cluster terminal moves to another SGW, if the SGW and the PGW have established a shared transmission channel, the shared channel is used, otherwise a shared transmission channel from the PGW to the SGW is established.
  • the shared channel is used, otherwise the shared transmission channel of the SGW to the base station is established.
  • the shared channel is used. Otherwise, the base station establishes a shared air interface transmission channel for the cell where the cluster terminal is located.
  • the transmission channel established under the original base station for the terminal is deleted to save transmission resources, as shown by the dotted line in FIG.
  • the terminal indicates that there is no cluster terminal under this base station, that is, all the original cluster terminals under the base station have moved to other base stations.
  • To delete the air interface shared transmission channel from the base station to the non-cluster terminal it is assumed that the terminal moves to the black in the figure.
  • the location drawn by the line needs to establish a shared transmission channel to the terminal, that is, the base station has previously established the shared transmission channel for other cluster terminals of the same cell, and the terminal directly uses the previously established cluster shared transmission channel, if The terminal is the only cluster terminal of the next cell of the base station, and the base station needs to establish a shared transmission channel to the terminal, so that the data transmitted by the cluster server can still be received after the cluster terminal moves.
  • the mobility of the terminal is guaranteed.
  • the MME establishes a third shared transmission channel from the SGW to the base station, where the third shared transmission channel is used to transmit data forwarded from the SGW, and the data is sent by the cluster server. And passing the first shared transmission channel, the second shared transmission channel, and the fourth shared transmission channel to the cluster terminal through the first shared transmission channel, so that all the cluster terminals receive the same data between the cluster server and the cluster terminal.
  • the first shared transmission channel is a shared transmission channel of the cluster server to the PGW;
  • the second shared transmission channel is a shared transmission channel of the PGW to the SGW;
  • the fourth shared transmission channel is a shared transmission channel of the cell where the base station is located to the cluster terminal.
  • the SGW establishes a second shared transmission channel from the PGW to the SGW; the SGW receives data forwarded by the PGW from the second shared transmission channel, where the data is under the cluster server. And transmitting the data to the PGW through the first shared transmission channel; the SGW transmitting the received data to the cluster terminal through the third shared transmission channel and the fourth shared transmission channel, so that all the cluster terminals receive the same
  • the data is transmitted only once on the common path of the shared transmission channel established between the cluster server and the cluster terminal; wherein, the first shared transmission channel is a shared transmission channel of the cluster server to the PGW; and the third shared transmission channel is the SGW.
  • a shared transmission channel to the base station; the fourth shared transmission channel is a shared transmission channel of the cell where the base station is located to the cluster terminal.
  • the base station establishes a fourth shared transmission channel from the base station to the cell where the cluster terminal is located, and all the cluster terminals in each cell share a fourth shared transmission channel;
  • the third shared transmission channel receives the data forwarded by the SGW, and the data is sent by the cluster server, and is transmitted to the base station through the first shared transmission channel, the second shared transmission channel, and the third shared transmission channel; the base station receives the data.
  • the fourth shared transmission channel Sending to the cluster terminal through the fourth shared transmission channel, so that the same data received by all the cluster terminals is only transmitted once on the common path of the shared transmission channel established between the cluster server and the cluster terminal; wherein, the first shared transmission The channel is a shared transmission channel of the cluster server to the PGW; the second shared transmission channel is a shared transmission channel of the PGW to the SGW; and the fourth shared transmission channel is a shared transmission channel of the cell where the base station is located to the cluster terminal.
  • the cluster terminal receives the data forwarded by the base station from the fourth shared transmission channel, where the data is sent by the cluster server, and passes through the first shared transmission channel, and the second shared transmission
  • the channel, the third shared transmission channel, and the fourth shared transmission channel are delivered to the cluster terminal, and the same data received by all the cluster terminals is transmitted only once on the common path of the shared transmission channel established between the cluster server and the cluster terminal;
  • the first shared transmission channel is a shared transmission channel of the cluster server to the packet data network gateway;
  • the second shared transmission channel is a shared transmission channel of the packet data network gateway to the serving gateway;
  • the third shared transmission channel is a serving gateway to a shared transmission channel of the base station;
  • the fourth shared transmission channel is a shared transmission channel of the cell where the base station is located to the cluster terminal.
  • the common path of the shared transmission channel established between the cluster server and the cluster terminal is specific For:
  • the first shared transmission channel is a common path of all the cluster terminals
  • the second shared transmission channel is a common path of all the cluster terminals under the same service gateway;
  • the third shared transmission channel is a common path of all the cluster terminals under the base station;
  • the fourth shared transmission channel is a common path of all cluster terminals in the same cell.
  • another embodiment of a method for trunking communication provided by the present invention includes:
  • the terminal establishes a default load of 7.
  • the terminal establishes a packet data network (PDN, Packet Data Network) connection to a specific access point name (APN).
  • PDN Packet Data Network
  • APN access point name
  • the APN is a specific APN for cluster communication.
  • the default bearer (Default Bearer) Establishing, at the same time, after step 201, the system may also establish a separate dedicated bearer (Dedicated Bearer) for the terminal;
  • the mobility management entity triggers the terminal to join the cluster communication group subscribed by the terminal.
  • the MME determines which cluster communication groups the terminal subscribes to according to the subscription data of the terminal transmitted by the Home Subscriber Server (HSS), and then triggers the join to the cluster communication group by itself, that is, the MME sends the cluster communication group command to the S-GW.
  • TGJC Trunk Group Join Command
  • the TGJC message carries a cluster communication group identifier of the cluster communication group, such as an IP multicast address, and then the SGW sends a TGJC message to the PGW.
  • the PGW After receiving the TGJC message sent by the SGW, the PGW sends a TGJC message to the cluster server; the PGW and the cluster server perform group access authorization of the terminal, and the PGW provides the identifier of the terminal to the cluster server, such as an international mobile subscriber identity (IMSI, International) Mobile Subscriber Identification Number and MSISDN (Mobile Subscriber International ISDN/PSTN number) identifier; the cluster server is based on the user's identity and the user's subscription data on the cluster server, or the cluster server provides the terminal according to the PGW. Identify the subscription data from the HSS/HLR to the user, or the subscription data of the cluster service stored on the cluster server to determine whether to allow the terminal to use the cluster service.
  • IMSI international mobile subscriber identity
  • MSISDN Mobile Subscriber International ISDN/PSTN number
  • the cluster communication group of the cluster communication group identifier may be referred to as a cluster terminal, and a shared transmission channel is established between the cluster server and the PGW. Similarly, if a cluster server has been established before. The shared transmission channel with the PGW reuses the previous shared transmission channel without re-establishment.
  • the PGW sends a first cluster communication group bearer activation request message to the SGW, and the SGW sends a second cluster communication group bearer activation request message to the MME.
  • the first and second cluster communication group bearer activation request messages carry the cluster communication group identifier and a specified access point name
  • the MME sends a third cluster communication group bearer activation request message to the terminal by using the base station.
  • the MME determines, according to the cluster communication group identifier and the specified access point name, whether the base station has established the first downlink tunnel port identifier and the IP address before sending the third cluster communication group bearer activation request message;
  • the downlink tunnel port identifier and the IP address when transmitting the third cluster communication group bearer activation request message, simultaneously send indication information indicating that the base station uses the established first downlink tunnel port identifier and the IP address;
  • the downlink tunnel port identifier and the IP address when the third cluster communication group bearer activation request message is sent, simultaneously send a group radio access bearer request to the base station, so that the base station establishes the first downlink tunnel port identifier and the IP address;
  • the first downlink tunnel port identifier and the IP address refer to the downlink GTP-U (GTP user plane, GTP, GPRS Tunnelling Protocol, General Packet Radio Protocol Tunneling Protocol)
  • the base station Regardless of whether the eNB determines whether the base station establishes the first downlink tunnel port identifier and the IP address, the base station sends a third cluster communication group bearer activation request message to the terminal, and simultaneously allocates an air interface shared transmission channel to the terminal, thereby establishing a slave station.
  • Base station to terminal shared transmission channel. Similar to the shared transmission channel between the SGW and the base station, an air interface shared transmission channel is also commonly used between all terminals in the same cell under the base station and the base station.
  • the MME receives a group radio access bearer response message sent by the base station.
  • the base station After receiving the group radio access bearer request sent by the MME, the base station allocates the first downlink tunnel port identifier and the IP address, and sends a group radio access bearer response message to the MME, where the group radio access bearer response The message carries the first downlink tunnel port identifier and the IP address that are established. If the base station receives the third cluster communication group bearer activation request message, the base station receives the used first downlink tunnel port identifier and the IP address. If the information is indicated, a response message using the established parameters is replied to the MME.
  • the MME receives a first cluster communication group bearer activation response message sent by the terminal.
  • the MME sends a second cluster communication group bearer activation response message to the SGW, and the SGW sends a third cluster communication group bearer activation response message to the PGW.
  • the MME sends a second cluster communication group bearer activation response message to the SGW, where the second cluster communication group bearer activation response message carries the cluster communication group identifier, the designated access point name, and the first downlink tunnel port identifier, and IP address, establishing a shared transmission channel from the SGW to the base station;
  • the SGW determines whether a second downlink tunnel port identifier and an IP address have been allocated according to the cluster communication group identifier and the specified access point name. If not, the SGW allocates the second downlink tunnel port identifier and the IP address, and passes the SGW.
  • the second downlink tunnel port identifier and the IP address are carried in the third cluster communication group bearer activation response message, and sent to the PGW to establish a shared transmission channel from the PGW to the SGW; if it is allocated, the second downlink tunnel port is also configured.
  • the identifier and the IP address are carried in the third cluster communication group bearer activation response message and sent to the PGW to establish a shared transmission channel from the PGW to the SGW.
  • the second downlink tunnel port identifier and IP address refer to the downlink GTP-U TEID and its IP address of the S5 or S8 interface allocated by the SGW.
  • the shared transmission channel from the cluster server to the PGW, the shared transmission channel from the PGW to the SGW, the shared transmission channel from the SGW to the base station, and the base station to the terminal are respectively established from the steps of 201 ⁇ 208.
  • the air interface shares the transmission channel, thereby completing the establishment process of the shared transmission channel from the cluster server to the terminal. In this way, multiple cluster terminals of the same cluster communication share the transmission resources, and when the cluster terminal moves the handover, applying these steps can ensure the continuity of the terminal sharing transmission resources.
  • another embodiment of a method for trunking communication provided by the present invention includes:
  • the terminal establishes a default of 7 loads.
  • This step is the same as step 201 in the embodiment corresponding to FIG. 3. 302.
  • the MME sends a fourth cluster communication group bearer activation request message to the SGW, and the SGW sends a fifth cluster communication group bearer activation request message to the PGW.
  • the MME sends a fourth cluster communication group bearer activation request message to the SGW, where the fourth cluster communication group bearer activation request message carries the cluster communication group identifier and the designated access point name, and if the MME determines that the base station has been established a downlink tunnel port identifier and an IP address, where the fourth cluster communication group bearer activation request message carries the first downlink tunnel port identifier and the IP address, and if it is determined that the base station does not establish the first downlink tunnel port identifier and The IP address does not carry the first downlink tunnel port identifier and the IP address in the fourth cluster communication group bearer activation request message;
  • the SGW determines whether a second downlink tunnel port identifier and an IP address have been allocated according to the cluster communication group identifier and the specified access point name. If not, the SGW allocates the second downlink tunnel port identifier and the IP address, and passes the SGW.
  • the second downlink tunnel port identifier and the IP address are carried in the fifth cluster communication group bearer activation request message, and sent to the PGW to establish a shared transmission channel from the PGW to the SGW; if it is allocated, the second downlink tunnel port is also configured.
  • the identifier and the IP address are carried in the fifth cluster communication group bearer activation request message and sent to the PGW, indicating that the established shared transmission channel from the PGW to the SGW is used.
  • step 203 is the same as step 203 and will not be described in detail.
  • the PGW sends a fourth cluster communication group bearer activation response message to the SGW, and the SGW sends a fifth cluster communication group bearer activation response message to the MME.
  • the fourth and fifth trunk communication group bearer activation response messages carry the cluster communication group identifier and the designated access point name.
  • the process of this step is the same as that of 204, except that the message name is different and will not be described in detail here.
  • the process of 305 ⁇ 307 is the same as the process of steps 205 ⁇ 207.
  • the MME sends a group bearer modification request message to the SGW.
  • the group bearer modification request message carries the first downlink tunnel port identifier and the IP address, and establishes a shared transmission channel from the SGW to the base station.
  • the MME receives a group bearer modification response sent by the SGW.
  • the step 306 in the embodiment of the present invention sends the first used established.
  • the downlink tunnel port identifier and the IP address response message; in this case, 308 and 309 in the embodiment of the present invention may also be omitted.
  • the MME may carry the first downlink tunnel port identifier and the IP address in the first
  • the four-cluster communication group bearer activation request message is sent to the SGW.
  • a shared transmission channel from the cluster server to the PGW, a shared transmission channel from the PGW to the SGW, a shared transmission channel from the SGW to the base station, and a shared transmission channel from the base station to the terminal are respectively established, thereby completing the The process of establishing a shared transport channel from the cluster server to the terminal.
  • multiple terminals in the same cluster communication share the transmission resources, and these steps can be applied to ensure the continuity of the terminal sharing transmission resources when the terminal moves.
  • the above embodiment introduces the establishment process of the shared transmission channel from the cluster server to the terminal from the perspective of the MME triggering the establishment of the shared transmission channel. Since the MME triggers the establishment of the shared transmission channel, during the handover process, the cluster is used. After the terminal moves to a new network node (such as a new base station, a new MME, a new SGW), the MME establishes a shared transmission channel for the cluster terminal. In fact, not only the MME can trigger the establishment of the shared transmission channel, but also the terminal and the cluster server can trigger the establishment of the shared transmission channel. The following describes the establishment process of the terminal triggering the shared transmission channel:
  • the process of establishing the shared transmission channel of FIG. 5 is basically the same as that of the embodiment corresponding to FIG. 3, except that in step 402, the terminal triggers to join the cluster communication group, instead of the MME triggering to join the cluster communication group;
  • the process of establishing the shared transmission channel in FIG. 6 is basically the same as the embodiment corresponding to FIG. 4, except that in step 502, the terminal triggers the joining of the cluster communication group, and further includes steps 504 and 505, and the PGW notifies the terminal to join.
  • the cluster communication performs the establishment of the cluster shared transmission channel.
  • Step 504 The PGW sends a group bearer activation notification to the SGW, and the SGW sends the group bearer activation notification to the MME.
  • Step 505 The MME sends the group bearer activation notification to the terminal. Subsequent steps 507-513 are the same as steps 302 to 309 in the embodiment corresponding to FIG. 4, and details are not described herein again. It is only necessary to point out that the packet data gateway after step 507 may be the packet data gateway in the previous step of the step. Not the same entity.
  • the embodiment of the present invention details the process of triggering the establishment of a shared transmission channel by the cluster server:
  • the PGW proxy terminal sends a registration request to the cluster server.
  • the PGW When the Default Bearer is established in step 601, the PGW needs to assign an IP address to the terminal.
  • the IP address may be allocated by the cluster server.
  • the PGW needs the proxy terminal to perform the IP address allocation process of the terminal: For example, the dynamic host setting protocol (DHCP, Dynamic Host Configuration Protocol) or Remote Authentication Dial In User Service (Diameter) or Diameter process.
  • DHCP Dynamic Host Configuration Protocol
  • Diameter Remote Authentication Dial In User Service
  • Diameter Diameter process.
  • the Diameter protocol is authenticated and authorized by the Internet Engineering Task Force (IETF).
  • Diameter which literally translates to "diameter”, meaning that the Diameter protocol is an upgraded version of the RADIUS (which literally translates to "radius") protocol
  • the cluster server is available
  • the identifier of the terminal such as Network Access Identifier (NAI), IMSL MSISDN, etc.
  • the terminal sends a registration message to the cluster server through the IP address terminal, and the message may only provide the identifier of the terminal, such as the NAI, the session initiation protocol, the uniform resource identifier (SIP URI, Session Initiation Protocol Uniform). Resource Identifier), IMSL MSISDN, etc., or the identity of the terminal and the identity of the trunking communication group, such as NAI, SIP URI, and IP multicast address.
  • the identifier of the terminal such as the NAI, the session initiation protocol, the uniform resource identifier (SIP URI, Session Initiation Protocol Uniform). Resource Identifier), IMSL MSISDN, etc.
  • the authorization process of the cluster server is the same as the above embodiments. If the terminal directly registers with the cluster server, the authentication process is performed between the cluster servers and the authentication process can be performed.
  • the cluster server initiates establishment of a shared transmission channel, and sends an authentication authorization request (AAR, (AA-Request) message to the policy decision point.
  • AAR authentication authorization request
  • the AAR message contains session information of a cluster communication group receiver (see TS29.214 and
  • TS23.203 that is, the media parameters when transmitting cluster communication, such as the type of media, bandwidth required, and other parameters.
  • the policy decision point sends a re-authentication request (RAR, Re-Auth-Request) message to the PGW.
  • the PCRF determines the quality of service QoS parameter of the service data flow (SDF) in the cluster communication according to the session information in step 604, and sends the RAR message to the PGW through the Gx interface, where the RAR request message includes the SDF.
  • Packet Filter parameters and corresponding QoS parameters see TS29.212 and TS23.203).
  • the process of 606 ⁇ 610 is the same as the process of the embodiment corresponding to FIG. 5, and will not be described in detail herein. 611.
  • the PGW sends a re-authentication and authorization response RAA (Re-Auth-Answer) response message to the policy decision point.
  • RAA Re-Auth-Answer
  • the policy decision point sends an authentication authorization and accounting AAA (Authentication Authorisation Accounting) response message to the cluster server.
  • AAA Authentication Authorisation Accounting
  • the establishment process of the shared transmission channel is described in detail from the perspective of establishing a shared transmission channel by the cluster server.
  • an embodiment of a packet data network gateway 70 provided by the present invention includes:
  • a first channel establishing unit 701 configured to establish a first shared transmission channel from the cluster server to the PGW;
  • the first receiving unit 702 is configured to receive data sent by the cluster server from the first shared transmission channel established by the first channel establishing unit 701.
  • the first sending unit 703 is configured to send the data received by the first receiving unit 702 to the cluster terminal by using the second shared transmission channel, the third shared transmission channel, and the fourth shared transmission channel, so that all the cluster terminals receive the data.
  • the same data is transmitted only once on the common path of the shared transmission channel established between the cluster server and the cluster terminal; wherein, the second shared transmission channel is a shared transmission channel of the PGW to the SGW; and the third shared transmission channel is a shared transmission channel of the SGW to the base station; the fourth shared transmission channel is a shared transmission channel of the cell where the base station is located to the cluster terminal.
  • the first channel establishing unit 701 establishes a first shared transmission channel from the cluster server to the PGW; the first receiving unit 702 receives the cluster server from the first shared transmission channel established by the first channel establishing unit 701.
  • the first sending unit 703 sends the data received by the first receiving unit 702 to the cluster terminal through the second shared transmission channel, the third shared transmission channel, and the fourth shared transmission channel, so that all the cluster terminals receive
  • the same data that is sent is only passed once on the common path of the shared transport channel established between the cluster server and the cluster terminal.
  • the packet data network gateway provided by the embodiment of the present invention is for the end of the cluster. The same data received by the terminal is only transmitted once on the common path, which can save the transmission resources of the cluster data.
  • another embodiment of the packet data network gateway 70 provided by the present invention further includes: the first receiving unit 702, further configured to: before the first channel establishing unit 701 establishes the first shared transmission channel, the receiving terminal or the MME The triggered request to join the cluster communication group.
  • the first receiving unit 702 is further configured to receive, by the cluster server, a request for establishing a first shared transmission channel before the first channel establishing unit 701 establishes the first shared transmission channel.
  • an embodiment of the mobility management entity 80 provided by the embodiment of the present invention includes: a second channel establishing unit 801, configured to establish a third shared transmission channel from the SGW to the base station, where the third shared transmission channel is used for Passing the data forwarded from the SGW, the data is delivered by the cluster server, and is transmitted to the cluster terminal through the first shared transmission channel, the second shared transmission channel, the third shared transmission channel, and the fourth shared transmission channel, so that all The same data received by the cluster terminal is only transmitted once on the common path of the shared transmission channel established between the cluster server and the cluster terminal;
  • the first shared transmission channel is a shared transmission channel of the cluster server to the PGW; the second shared transmission channel is a shared transmission channel of the PGW to the SGW; and the fourth shared transmission channel is a cell of the base station to the cluster terminal. Shared transmission channel.
  • another embodiment of the mobility management entity 80 provided by the embodiment of the present invention includes: a second receiving unit 802, configured to receive a first cluster communication group bearer activation request message sent by the SGW, where the first cluster The communication group bearer activation request message carries the cluster communication group identifier and the designated access point name;
  • the first determining unit 803 is configured to determine, according to the cluster communication group identifier and the specified access point name received by the second receiving unit 802, whether the base station has allocated the first downlink tunnel port identifier and the IP address;
  • the second sending unit 804 is configured to: when the first determining unit 803 determines that the first downlink tunnel port identifier and the IP address are established, the second cluster communication group bearer activation request message is sent to the base station, and simultaneously sent Instructing the base station to use the established first downlink tunnel port identifier and the indication information of the IP address;
  • the second receiving unit 802 is further configured to send, by the sending unit 804, an indication that the base station is used. After the first downlink tunnel port identifier and the IP address indication information are established, the response message that the base station replies using the established parameter is received;
  • the second sending unit 804 is further configured to: when the first determining unit 803 determines that the first downlink tunnel port identifier and the IP address are not established by the base station, send the second cluster communication group bearer activation request message to the base station, And simultaneously sending a group radio access bearer request to the base station;
  • the second receiving unit 802 is further configured to: after the second sending unit 804 sends the group radio access bearer request, receive a group radio access bearer response message sent by the base station, where the group radio access
  • the bearer response message carries the first downlink tunnel port identifier and the IP address allocated by the base station;
  • the second sending unit 804 is further configured to send a second cluster communication group bearer activation response message to the SGW, where the second cluster communication group bearer activation response message carries the cluster communication group identifier, and the designated access point
  • the name and the first downlink tunnel port identifier and the IP address complete the establishment of a shared transmission channel from the SGW to the base station.
  • an embodiment of the service gateway 90 includes: a third channel establishing unit 901, configured to establish a second shared transmission channel from the PGW to the SGW; and a third receiving unit 902, configured to The second shared transmission channel established by the third channel establishing unit 901 receives the data forwarded by the PGW, and the data is delivered by the cluster server and transmitted to the PGW through the first shared transmission channel;
  • the third sending unit 903 is configured to send the data received by the third receiving unit 902 to the cluster terminal by using the third shared transmission channel and the fourth shared transmission channel, so that all the cluster terminals receive the same data in the cluster server.
  • the first shared transmission channel is a shared transmission channel of the cluster server to the PGW; and the third shared transmission channel is a sharing of the SGW to the base station.
  • a transmission channel; the fourth shared transmission channel is a shared transmission channel of the cell where the base station is located to the cluster terminal.
  • another embodiment of the service gateway 90 further includes: a third receiving unit 902, configured to receive, by the MME, a second cluster communication group bearer activation response message, where the second cluster communication is performed.
  • the group bearer activation response message carries the cluster communication group flag Know and specify the name of the access point;
  • the second determining unit 904 determines, according to the cluster communication group identifier and the specified access point name, whether the second downlink tunnel port identifier and the IP address have been allocated;
  • the third sending unit 903 is further configured to: when the second determining unit 904 determines that the second downlink tunnel port identifier and the IP address have been allocated, carry the second downlink tunnel port identifier and the IP address in the third cluster communication group.
  • the bearer activation response message is sent to the PGW to establish a shared transmission channel from the PGW to the SGW;
  • the address allocation unit 905 is configured to: when the second determining unit 904 determines that the second downlink tunnel port identifier and the IP address are not allocated, allocate the second downlink tunnel port according to the cluster communication group identifier and the specified access point name. Identification and IP address;
  • the third sending unit 903 is further configured to send the second downlink tunnel port identifier and the IP address in the third cluster communication group bearer activation response message to the PGW to establish a shared transmission channel from the PGW to the SGW. .
  • the SGW controls the establishment of a shared transmission channel from the PGW to the SGW.
  • an embodiment of a base station 100 includes:
  • the fourth channel establishing unit 1001 is configured to establish a fourth shared transmission channel from the base station to the cell where the cluster terminal is located, where all the cluster terminals in each cell share a fourth shared transmission channel; and the fourth receiving unit 1002 is used to The third shared transmission channel receives the data forwarded by the SGW, and the data is sent by the cluster server, and is transmitted to the base station through the first shared transmission channel, the second shared transmission channel, and the third shared transmission channel;
  • the fourth sending unit 1003 is configured to send, by the fourth receiving unit 1002, the fourth shared transmission channel established by the fourth channel establishing unit 1001 to the cluster terminal, so that all the cluster terminals receive the same data in the cluster.
  • the first shared transmission channel is a shared transmission channel from the cluster server to the PGW; the second shared transmission channel is a PGW to the SGW.
  • the first shared transmission channel is a shared transmission channel from the cluster server to the PGW.
  • the shared transmission channel is a shared transmission channel of the cell where the base station is located to the cluster terminal.
  • the embodiment of the present invention further provides a terminal, where the terminal provided by the embodiment of the present invention includes: a fifth receiving unit, configured to receive data forwarded by the base station from the fourth shared transmission channel, where the data is sent by the cluster server, and passes through the first shared transmission channel, the second shared transmission channel, the third shared transmission channel, and the first The four shared transmission channels are transmitted to the cluster terminal, so that the same data received by all the cluster terminals is transmitted only once on the common path of the shared transmission channel established between the cluster server and the cluster terminal; wherein, the first shared transmission channel is a shared transmission channel of the cluster server to the packet data network gateway; the second shared transmission channel is a shared transmission channel of the packet data network gateway to the serving gateway; and the third shared transmission channel is a shared transmission channel of the serving gateway to the base station;
  • the fourth shared transmission channel is a shared transmission channel of the cell where the base station is located to the cluster terminal.
  • the packet data network gateway establishes a first shared transmission channel from the cluster server to the packet data network gateway;
  • the serving gateway establishes a second shared transmission channel from the packet data network gateway to the serving gateway;
  • the mobility management entity establishes a third shared transmission channel from the serving gateway to the base station;
  • the base station establishes a fourth shared transmission channel from the base station to the cell where the cluster terminal is located;
  • the terminal receives the data from the fourth shared transmission channel, where the data is sent by the cluster server, and is transmitted through the first shared transmission channel, the second shared transmission channel, the third shared transmission channel, and the fourth shared transmission channel.
  • the same data received by all cluster terminals is only transmitted once on the common path of the shared transmission channel established between the cluster server and the cluster terminal.
  • the method further includes: updating a shared transmission channel from the cluster server to the mobile cluster terminal.
  • the shared transmission channel of the update from the cluster server to the mobile cluster terminal includes: When the cluster terminal moves to another cell of the original base station, if the cell in which the cluster terminal is located after the original base station is mobile has established an air interface shared transmission channel, the shared channel is used, otherwise the base station establishes air interface sharing for the cell.
  • the cluster terminal moves to another base station under the same SGW, if the base station has an air interface shared transmission channel for the cell in which the cluster terminal is located, the shared channel is used, otherwise the base station is the cluster terminal.
  • the cell in which the cell is located establishes an air interface shared transmission channel;
  • the cluster terminal moves to another SGW, if the SGW and the PGW have established a shared transmission channel, the shared channel is used, otherwise a shared transmission channel from the PGW to the SGW is established.
  • the shared channel is used, otherwise the shared transmission channel of the SGW to the base station is established.
  • the shared channel is used. Otherwise, the base station establishes a shared air interface transmission channel for the cell where the cluster terminal is located.
  • the process of establishing a transmission channel can be understood by referring to FIG. 3 to FIG. 7, and the process of transferring data from the cluster server to the terminal is understood by FIG.
  • the system provided by the embodiment of the invention can save transmission resources and ensure that the cluster data can still be received after the terminal moves.

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Abstract

本发明公开了一种集群通信的方法,分组数据网网关建立从集群服务器到分组数据网网关的第一共享传输通道;所述分组数据网网关从所述第一共享传输通道接收集群服务器下发的数据;所述分组数据网网关将所述接收到的数据通过第二共享传输通道、第三共享传输通道和第四共享传输通道发送给集群终端,以使得所有集群终端接收到的同一数据在集群服务器到集群终端之间建立的共享传输通道的共同路径上只传递一次;其中,所述第二共享传输通道为分组数据网网关到服务网关的共享传输通道;所述第三共享传输通道为服务网关到基站的共享传输通道;所述第四共享传输通道为基站到集群终端所在小区的共享传输通道。

Description

一种集群通信的方法、 装置及系统 本申请要求于 2012 年 01 月 10 日提交中国专利局、 申请号为 201210006031.9、 发明名称为"一种集群通信的方法、 装置及系统,,的中国专 利申请的优先权, 其全部内容通过引用结合在本申请中。 技术领域 本发明涉及通信技术领域, 具体涉及一种集群通信的方法、 装置及系统。 背景技术 集群通信系统是移动通信系统的一个重要分支, 它是一种具有交换和 控制双重功能的专用移动通信中的指挥、 调动系统。 集群通信系统提供群 组呼叫、 话权抢占、 动态重组等基本业务功能。 集群通信系统已经成为移 动通信的重要组成部分
传输这些高宽带新型业务同时也带来一个问题, 当集群的一呼百应, 若这些响应的终端都是在同一个基站所覆盖的范围内, 为每个终端分别传 输相同的媒体数据, 如视频数据流( Video Streaming )则会浪费很多的传输 资源,特别是比较紧张的回程 ( Backhaul )资源及特别稀缺的无线空口资源。 发明内容 本发明实施例提供一种集群通信的方法, 可以节约集群数据的传输资 源。 本发明实施例还提供了相应的装置及系统。
一种集群通信的方法, 包括:
分组数据网网关建立从集群服务器到所述分组数据网网关的第一共享 传输通道;
所述分组数据网网关从所述第一共享传输通道接收集群服务器下发的 数据;
所述分组数据网网关将接收到的所述数据通过第二共享传输通道、 第 三共享传输通道和第四共享传输通道发送给集群终端, 以使得所有集群终 端接收到的同一数据在所述集群服务器到所述集群终端之间建立的共享传 输通道的共同路径上只传递一次;
其中, 所述第二共享传输通道为所述分组数据网网关到服务网关的共 享传输通道; 所述第三共享传输通道为所述服务网关到基站的共享传输通 道; 所述第四共享传输通道为所述基站到所述集群终端所在小区的共享传 输通道。
一种集群通信的方法, 包括:
移动性管理实体建立从服务网关到基站的第三共享传输通道, 所述第 三共享传输通道用于传递从所述服务网关转发的数据, 所述数据是集群服 务器下发的, 并通过第一共享传输通道、 第二共享传输通道、 第三共享传 输通道和第四共享传输通道传递给集群终端, 以使得所有集群终端接收到 的同一数据在集群服务器到集群终端之间建立的共享传输通道的共同路径 上只传递一次;
其中, 所述第一共享传输通道为所述集群服务器到所述分组数据网网 关的共享传输通道; 所述第二共享传输通道为所述分组数据网网关到服务 网关的共享传输通道; 所述第四共享传输通道为所述基站到所述集群终端 所在小区的共享传输通道。
一种集群通信的方法, 包括:
服务网关建立从分组数据网关到所述服务网关的第二共享传输通道; 所述服务网关从所述第二共享传输通道接收所述分组数据网网关转发 的数据, 所述数据是集群服务器下发的, 并通过第一共享传输通道传递给 所述分组数据网网关;
所述服务网关将所述接收到的数据通过第三共享传输通道和第四共享 传输通道发送给集群终端, 以使得所有集群终端接收到的同一数据在集群 服务器到集群终端之间建立的共享传输通道的共同路径上只传递一次; 其中, 所述第一共享传输通道为集群服务器到分组数据网网关的共享 传输通道; 所述第三共享传输通道为服务网关到基站的共享传输通道; 所 述第四共享传输通道为基站到集群终端所在小区的共享传输通道。 一种集群通信的方法, 包括:
基站建立从基站到集群终端所在小区的第四共享传输通道, 每个小区 中的所有集群终端共用所述第四共享传输通道;
所述基站从第三共享传输通道接收服务网关转发的数据, 所述数据是 集群服务器下发的, 并通过第一共享传输通道, 第二共享传输通道, 第三 共享传输通道传递给基站;
所述基站将接收到数据通过第四共享传输通道发送给集群终端, 以使 得所有集群终端接收到的同一数据在集群服务器到集群终端之间建立的共 享传输通道的共同路径上只传递一次;
其中, 所述第一共享传输通道为集群服务器到分组数据网关的共享传 输通道; 所述第二共享传输通道为分组数据网网关到服务网关的共享传输 通道; 所述第三共享传输通道为服务网关到基站的共享传输通道。
一种集群通信的方法, 包括:
集群终端从第四共享传输通道接收基站转发的数据, 所述数据是集群 服务器下发的, 并通过第一共享传输通道, 第二共享传输通道, 第三共享 传输通道和第四共享传输通道传递给集群终端, 所有集群终端接收到的同 一数据在集群服务器到集群终端之间建立的共享传输通道的共同路径上只 传递一次;
其中, 所述第一共享传输通道为集群服务器到分组数据网网关的共享 传输通道; 所述第二共享传输通道为分组数据网网关到服务网关的共享传 输通道; 所述第三共享传输通道为服务网关到基站的共享传输通道; 所述 第四共享传输通道为基站到集群终端所在小区的共享传输通道。
一种分组数据网网关, 包括:
第一通道建立单元, 用于建立从集群服务器到分组数据网网关的第一 共享传输通道;
第一接收单元, 用于从所述第一通道建立单元建立的第一共享传输通 道接收集群服务器下发的数据;
第一发送单元, 用于将所述第一接收单元接收到的数据通过第二共享 传输通道、 第三共享传输通道和第四共享传输通道发送给集群终端, 以使 得所有集群终端接收到的同一数据在集群服务器到集群终端之间建立的共 享传输通道的共同路径上只传递一次; 其中, 所述第二共享传输通道为分 组数据网网关到服务网关的共享传输通道; 所述第三共享传输通道为服务 网关到基站的共享传输通道; 所述第四共享传输通道为基站到集群终端所 在小区的共享传输通道。
一种移动管理实体, 包括:
第二通道建立单元, 用于建立从服务网关到基站的第三共享传输通道, 所述第三共享传输通道用于传递从服务网关转发的数据, 所述数据是集群 服务器下发的, 并通过第一共享传输通道、 第二共享传输通道、 第三共享 传输通道和第四共享传输通道传递给集群终端, 以使得所有集群终端接收 到的同一数据在集群服务器到集群终端之间建立的共享传输通道的共同路 径上只传递一次;
其中, 所述第一共享传输通道为集群服务器到分组数据网网关的共享 传输通道; 所述第二共享传输通道为分组数据网网关到服务网关的共享传 输通道; 所述第四共享传输通道为基站到集群终端所在小区的共享传输通 道。
一种服务网关, 包括:
第三通道建立单元, 用于建立从分组数据网网关到服务网关的第二共 享传输通道;
第三接收单元, 用于从所述第三通道建立单元建立的第二共享传输通 道接收分组数据网网关转发的数据, 所述数据是集群服务器下发的, 并通 过第一共享传输通道传递给分组数据网网关;
第三发送单元, 用于将所述第三接收单元接收到的数据通过第三共享 传输通道和第四共享传输通道发送给集群终端, 以使得所有集群终端接收 到的同一数据在集群服务器到集群终端之间建立的共享传输通道的共同路 径上只传递一次; 其中, 所述第一共享传输通道为集群服务器到分组数据 网网关的共享传输通道; 所述第三共享传输通道为服务网关到基站的共享 传输通道; 所述第四共享传输通道为基站到集群终端所在小区的共享传输 通道。 一种基站, 包括:
第四通道建立单元, 用于建立从基站到集群终端所在小区的第四共享 传输通道, 每个小区中的所有集群终端共用一条第四共享传输通道;
第四接收单元, 用于从第三共享传输通道接收服务网关转发的数据, 所述数据是集群服务器下发的, 并通过第一共享传输通道, 第二共享传输 通道, 第三共享传输通道传递给基站;
第四发送单元, 用于将所述第四接收单元接收到数据通过第四通道建 立单元建立的第四共享传输通道发送给集群终端, 以使得所有集群终端接 收到的同一数据在集群服务器到集群终端之间建立的共享传输通道的共同 路径上只传递一次; 其中, 所述第一共享传输通道为集群服务器到分组数 据网网关的共享传输通道; 所述第二共享传输通道为分组数据网网关到服 务网关的共享传输通道; 所述第四共享传输通道为基站到集群终端所在小 区的共享传输通道。
一种终端, 包括:
第五接收单元, 用于从第四共享传输通道接收基站转发的数据, 所述 数据是集群服务器下发的, 并通过第一共享传输通道, 第二共享传输通道, 第三共享传输通道和第四共享传输通道传递给集群终端, 以使得所有集群 终端接收到的同一数据在集群服务器到集群终端之间建立的共享传输通道 的共同路径上只传递一次; 其中, 所述第一共享传输通道为集群服务器到 分组数据网网关的共享传输通道; 所述第二共享传输通道为分组数据网网 关到服务网关的共享传输通道; 所述第三共享传输通道为服务网关到基站 的共享传输通道; 所述第四共享传输通道为基站到集群终端所在小区的共 享传输通道。
一种集群通信系统, 包括:
分组数据网网关建立从集群服务器到分组数据网网关的第一共享传输 通道;
服务网关建立从分组数据网网关到服务网关的第二共享传输通道; 移动管理实体建立从服务网关到基站的第三共享传输通道;
基站建立从基站到集群终端所在小区的第四共享传输通道; 所述分组数据网网关从第一共享传输通道接收集群服务器下发的数 据;
所述服务网关从所述第二共享传输通道接收所述数据, 并将所述数据 转发到第三共享传输通道;
所述基站从所述第三共享传输通道接收所述数据, 并将所述数据转发 到第四共享传输通道;
终端从所述第四共享传输通道接收所述数据, 所述数据是集群服务器 下发的, 并通过第一共享传输通道、 第二共享传输通道、 第三共享传输通 道和第四共享传输通道传递给集群终端, 所有集群终端接收到的同一数据 在集群服务器到集群终端之间建立的共享传输通道的共同路径上只传递一 次。 本发明实施例釆用分组数据网网关建立从集群服务器到分组数据网网 关的第一共享传输通道; 所述分组数据网网关从所述第一共享传输通道接 收集群服务器下发的数据; 所述分组数据网网关将所述接收到的数据通过 第二共享传输通道, 第三共享传输通道和第四共享传输通道发送给集群终 端, 以使得所有集群终端接收到的同一数据在集群服务器到集群终端之间 建立的共享传输通道的共同路径上只传递一次; 其中, 所述第二共享传输 通道为分组数据网网关到 SGW的共享传输通道; 所述第三共享传输通道为 SGW到基站的共享传输通道; 所述第四共享传输通道为基站到集群终端所 在小区的共享传输通道。 与现有技术相比, 本发明实施例提供的集群通信 的方法, 对于集群终端接收到的同一数据在共同的路径上只传递一次, 可 以节约集群数据的传输资源。 附图说明 图 1是本发明实施例中集群通信的方法的一实施例示意图;
图 2是本发明实施例中集群通信的方法的一是实施例中提供的共享传 输通道的树状示意图; 图 3是本发明实施例中集群通信的方法的另一实施例示意图; 图 4是本发明实施例中集群通信的方法的另一实施例示意图; 图 5是本发明实施例中集群通信的方法的另一实施例示意图; 图 6是本发明实施例中集群通信的方法的另一实施例示意图; 图 7是本发明实施例中集群通信的方法的另一实施例示意图; 图 8是本发明实施例中分组数据网网关的一实施例示意图;
图 9是本发明实施例中移动管理实体的一实施例示意图;
图 10是本发明实施例中移动管理实体的一实施例示意图;
图 11是本发明实施例中服务网关的一实施例示意图;
图 12是本发明实施例中服务网关的另一实施例示意图;
图 13是本发明实施例中基站的一实施例示意图。 具体实施方式 本发明实施例提供一种集群通信的方法, 可以节约集群数据的传输资 源。 本发明实施例还提供了相应的装置及系统。 本发明实施例还提供了相 应的装置及系统。 以下进行详细说明。
分组数据网网关 (PGW, Packet Data Network Gateway ), 服务网关 ( SGW, Serving Gateway ), 移动管理实体 ( MME, Mobility Management Entity )。
参阅图 1 ,从分组数据网网关的角度来看, 本发明实施例提供的集群通 信的方法的一实施例包括:
101、 分组数据网网关建立从集群服务器到分组数据网网关的第一共享 传输通道。
PGW接收服务器下发的数据前还包括接收签约集群通信群组的终端或 移动管理实体 MME触发的加入集群通信群组的请求; 根据接收到的加入集 群通信群组的请求, 为加入集群通信群组的集群终端建立从集群服务器到 PGW的共享传输通道, 签约集群通信群组的终端加入集群通信群组后称为 集群终端; 也可以是, 接收集群服务器触发的建立共享传输通道的请求; 发送建 立共享传输通道的响应消息给集群服务器, 为加入集群通信群组的集群终 端建立从集群服务器到 PGW的共享传输通道; 本发明实施例中称从集群服 务器到 PGW的的共享传输通道为第一共享传输通道。
更重要的是, 在接收数据前, 要由 SGW建立从 PGW到 SGW的共享传输 通道, MME建立从 SGW到基站的共享传输通道,本发明实施例中称从 PGW 到 SGW的共享传输通道为第二共享传输通道, 称从 SGW到基站的共享传输 通道为第三共享传输通道;
基站为同一个小区下的所有的集群终端分配一个相同的空口共享传输 通道; 基站覆盖下可能有很多的小区, 则每一个小区的所有的集群终端对 应于一个空口共享传输通道; 为了叙述的方便, 若非特别的指明, 本专利 所说的基站下集群终端均是指基站下的一个小区的所有集群终端, 本发明 实施例中称从基站到集群终端所在小区的共享传输通道为四共享传输通 道。
这样建立完从集群服务器到集群终端的共享传输通道后, 集群服务器 集群服务器先将数据下发到第一共享传输通道, 通过第一共享传输通道、 第二共享传输通道、 第三共享传输通道和第四共享传输通道下发数据给集 群终端。
102、 所述分组数据网网关从所述第一共享传输通道接收集群服务器下 发的数据, 所述分组数据网网关将所述接收到的数据通过第二共享传输通 道, 第三共享传输通道和第四共享传输通道发送给集群终端, 以使得所有 集群终端接收到的同一数据在集群服务器到集群终端之间建立的共享传输 通道的共同路径上只传递一次。
PGW从第一共享传输通道接收到数据后 ,通过 PGW与服务网关 SGW之 间的第二共享传输通道将数据发送给 SGW, SGW可以有一个, 也可以有多 个, 如果有多个 SGW, 那么在 PGW处将相同的数据分别通过每个第二共享 传输通道发送给每个 SGW,数据发送到 SGW后, SGW通过 SGW到基站的第 三共享传输通道将数据发送给基站, 基站再通过基站与集群终端所在小区 的的第四共享传输通道将数据发送给集群终端, 这个具体过程可参阅图 2进 行理解。
从集群终端的角度来讲, 所述集群服务器到加入集群通信群组的终端 之间建立的共享传输通道的共同路径具体为:
当所述集群终端在多个 SGW的多个基站及多小区的覆盖下时, 从集群 服务器到 PGW的共享传输通道为所有的集群终端的共同路径,
对于同一个 SGW下的多个集群终端,则 PGW到所述 SGW的共享传输通 道为所述同一个 SGW下的所有的集群终端的共同路径,
对于同一个基站下的多个集群终端, 则 SGW到此基站的共享传输通道 为该基站下的所有的集群终端的共同路径,
同一个基站中同一个小区覆盖下的多个集群终端, 则基站所分配的空 口共享传输通道为同一个小区下的所有的集群终端的共同路径。
对于共同路径只建立一次, 建立共享传输通道时, 打算建立的共享传 输通道已经存在时, 就不需要重新建立。
本发明实施例釆用分组数据网网关建立从集群服务器到分组数据网网 关的第一共享传输通道; 所述分组数据网网关从所述第一共享传输通道接 收集群服务器下发的数据; 所述分组数据网网关将所述接收到的数据通过 第二共享传输通道, 第三共享传输通道和第四共享传输通道发送给集群终 端, 以使得所有集群终端接收到的同一数据在集群服务器到集群终端之间 建立的共享传输通道的共同路径上只传递一次; 其中, 所述第二共享传输 通道为分组数据网网关到 SGW的共享传输通道; 所述第三共享传输通道为 SGW到基站的共享传输通道; 所述第四共享传输通道为基站到集群终端所 在小区的共享传输通道。 与现有技术相比, 本发明实施例提供的集群通信 的方法, 对于集群终端接收到的同一数据在共同的路径上只传递一次, 可 以节约集群数据的传输资源。
可选地, 在上述实施例的基础上, 当所述加入集群通信群组的集群终 端移动时, 更新从集群服务器到所述移动的集群终端的共享传输通道。
更新传输通道的具体操作视具体情况而定, 如:
当所述集群终端移动到原基站的另一个小区时, 若原基站为移动后所 述集群终端所在的小区已建立有空口共享传输通道, 则使用此共享通道, 否则此基站为此小区建立空口共享传输通道;
当所述集群终端移动到同一个 SGW下的另一个基站时, 若此基站为所 述集群终端所在的小区已经建立有空口共享传输通道, 则使用此共享通道, 否则此基站为所述集群终端所在的小区建立空口共享传输通道;
当所述集群终端移动到另一个 SGW时,若此 SGW与 PGW已建立有共享 传输通道,则使用此共享通道,否则建立从 PGW到此 SGW的共享传输通道。
当已建立有从 SGW到基站的共享传输通道, 则使用此共享通道, 否则 建立 SGW到此基站的共享传输通道,
当建立有从基站到集群终端所在小区的空口共享传输通道, 则使用此 共享通道, 否则此基站为此集群终端所在的小区建立共享的空口传输通道。
本发明实施例提供的方法, 当一个基站下的集群终端移动到另一个基 站下后, 针对该终端在原来基站下建立的传输通道会被删除, 以节约传输 资源, 如图 2中虚线所画的终端表示这个基站下没有集群终端时, 即此基站 下原来的所有集群终端已经移动到其它的基站了, 要删除从基站到没有集 群终端的空口共享传输通道, 假设终端移动到图中粗黑线所画的位置, 需 要建立到该终端的共享传输通道, 即此基站此前已为同一个小区的其它集 群终端建立了此共享传输通道, 则该终端直接使用此前建立的集群共享传 输通道, 若是该终端是此基站下一个小区的唯一的集群终端, 则基站需要 建立到该终端的共享传输通道, 这样保障了集群终端移动后依然可以接收 到集群服务器下发的数据。 保证了终端的移动性。
本发明实施例中, 从 MME的角度来看, MME建立从 SGW到基站的第 三共享传输通道, 所述第三共享传输通道用于传递从 SGW转发的数据, 所 述数据是集群服务器下发的, 并通过第一共享传输通道, 第二共享传输通 道, 第三共享传输通道和第四共享传输通道传递给集群终端, 以使得所有 集群终端接收到的同一数据在集群服务器到集群终端之间建立的共享传输 通道的共同路径上只传递一次; 其中, 所述第一共享传输通道为集群服务 器到 PGW的共享传输通道;所述第二共享传输通道为 PGW到 SGW的共享传 输通道; 所述第四共享传输通道为基站到集群终端所在小区的共享传输通 道。 本发明实施例中,从 SGW的角度来看, SGW建立从 PGW到 SGW的第二 共享传输通道; 所述 SGW从所述第二共享传输通道接收 PGW转发的数据, 所述数据是集群服务器下发的, 并通过第一共享传输通道传递给 PGW; 所 述 SGW将所述接收到的数据通过第三共享传输通道和第四共享传输通道发 送给集群终端, 以使得所有集群终端接收到的同一数据在集群服务器到集 群终端之间建立的共享传输通道的共同路径上只传递一次; 其中, 所述第 一共享传输通道为集群服务器到 PGW的共享传输通道; 所述第三共享传输 通道为 SGW到基站的共享传输通道; 所述第四共享传输通道为基站到集群 终端所在小区的共享传输通道。
本发明实施例中, 从基站的角度来看, 基站建立从基站到集群终端所 在小区的第四共享传输通道, 每个小区中的所有集群终端共用一条第四共 享传输通道; 所述基站从第三共享传输通道接收 SGW转发的数据, 所述数 据是集群服务器下发的, 并通过第一共享传输通道, 第二共享传输通道, 第三共享传输通道传递给基站; 所述基站将接收到数据通过第四共享传输 通道发送给集群终端, 以使得所有集群终端接收到的同一数据在集群服务 器到集群终端之间建立的共享传输通道的共同路径上只传递一次; 其中, 所述第一共享传输通道为集群服务器到 PGW的共享传输通道; 所述第二共 享传输通道为 PGW到 SGW的共享传输通道; 所述第四共享传输通道为基站 到集群终端所在小区的共享传输通道。
本发明实施例中, 从集群终端的角度来看, 集群终端从第四共享传输 通道接收基站转发的数据, 所述数据是集群服务器下发的, 并通过第一共 享传输通道, 第二共享传输通道, 第三共享传输通道和第四共享传输通道 传递给集群终端, 所有集群终端接收到的同一数据在集群服务器到集群终 端之间建立的共享传输通道的共同路径上只传递一次; 其中, 所述第一共 享传输通道为集群服务器到分组数据网网关的共享传输通道; 所述第二共 享传输通道为分组数据网网关到服务网关的共享传输通道; 所述第三共享 传输通道为服务网关到基站的共享传输通道; 所述第四共享传输通道为基 站到集群终端所在小区的共享传输通道。
所述集群服务器到集群终端之间建立的共享传输通道的共同路径具体 为:
当所述集群终端在多个服务网关的多个基站及多小区的覆盖下时, 第 一共享传输通道为所有的集群终端的共同路径;
对于同一个服务网关下的多个集群终端, 则第二共享传输通道为所述 同一个服务网关下的所有的集群终端的共同路径;
对于同一个基站下的多个集群终端, 则第三共享传输通道为该基站下 的所有的集群终端的共同路径;
对于同一个基站中同一个小区覆盖下的多个集群终端, 则第四共享传 输通道为同一个小区下的所有的集群终端的共同路径。
实际上从 MME、 SGW和基站的角度来看, 数据传递的过程是相同的, 只是在建立传输通道的过程中, 他们各自所起的作用不同。
关于建立从集群服务器到集群终端的共享传输通道的建立过程可参阅 下面 3〜图 7的过程进行理解。
参阅图 3 , 本发明提供的集群通信的方法的另一实施例包括:
201、 终端建立缺省 7 载。
终端建立一个到特定接入点名称( APN, Access Point Name )的分组数 据网络(PDN, Packet Data Network )连接, 此 APN为集群通信所特定 的 APN, 在此过程中, 缺省承载(Default Bearer )建立, 同时在步骤 201 后系统可能还为终端建立一个单独的专用承载( Dedicated Bearer );
202、 移动管理实体触发终端加入所述终端签约的集群通信群组。
MME根据家乡签约服务(HSS , Home Subscriber Server )传输过来 的终端的签约数据确定终端签约哪些集群通信组, 然后自行触发加入这些 集群通信组, 即 MME向 S-GW发送加入集群通信群组指令 ( TGJC, Trunk Group Join Command )消息, 所述 TGJC消息携带所述集群通信群组的集群 通信群组标识, 如 IP组播地址, 然后 SGW发送 TGJC消息给 PGW。
203、 群组接入授权。
PGW接收 SGW发送的终端加入 TGJC消息后, 发送 TGJC消息给集 群服务器; PGW与集群服务器进行终端的群组接入授权, PGW 向集群服 务器提供终端的标识, 如国际移动用户识别码( IMSI , International Mobile Subscriber Identification Number )及移动终端综合业务数字网 ( MSISDN, Mobile Subscriber International ISDN/PSTN number )标识; 集群服务器根据 用户的标识及其集群服务器上的用户签约数据,或者,集群服务器根据 PGW 提供的终端的标识从 HSS/HLR上取到用户的签约数据,或集群服务器上存 贮有集群服务的签约数据, 来决定是否允许此终端使用集群服务; 当集群 服务器通过终端的认证与授权后, 终端加入所述集群通信群组标识的集群 通信群组, 可以将加入集群通信群组的终端称为集群终端, 集群服务器与 PGW之间就建立了共享传输通道; 同样的道理, 若此前已建立了集群服务 器与 PGW之间的共享传输通道,则重用之前的共享传输通道而不需要重新 建立。
204、 PGW向 SGW发送第一集群通信群组承载激活请求消息, SGW 发送第二集群通信群组承载激活请求消息给 MME。
所述第一和第二集群通信群组承载激活请求消息携带所述集群通信群 组标识和指定的接入点名称;
205、 MME通过基站向终端发送第三集群通信群组承载激活请求消息。 MME在发送第三集群通信群组承载激活请求消息前根据所述集群通信群 组标识和指定的接入点名称判断基站是否已建立第一下行隧道端口标识及 IP地址; 若是已建立第一下行隧道端口标识及 IP地址, 在发送第三集群通 信群组承载激活请求消息时, 同时发送指示基站使用已建立的第一下行隧 道端口标识及 IP地址的指示信息; 若是未建立第一下行隧道端口标识及 IP 地址, 在发送第三集群通信群组承载激活请求消息时, 同时发送建立群组 无线接入承载请求给基站, 使基站建立第一下行隧道端口标识及 IP地址; 第一下行隧道端口标识及 IP地址是指基站分配的 S1-U接口的下行 GTP-U ( GTP用户平面, GTP, GPRS Tunnelling Protocol,通用分组无线协议隧道协 议) TEID ( Tunnel End Point Identifier , 隧道端口标识)及其 IP地址。
无论 MME判断出的基站是否建立第一下行隧道端口标识及 IP地址, 基 站将第三集群通信群组承载激活请求消息发送给终端, 并同时分配一个空 口的共享传输通道给终端, 从而建立从基站到终端的共享传输通道。 类似 于 SGW与基站之间的共享传输通道, 基站下的同一个小区中的所有终端与 此基站之间也是共同使用一个空口共享传输通道。
206、 MME接收基站发送的群组无线接入承载响应消息。
若步骤 205中基站在接收到第三集群通信群组承载激活请求消息时, 还 接收到了 MME发送的建立群组无线接入承载请求, 则基站分配第一下行隧 道端口标识及 IP地址, 并发送群组无线接入承载响应消息给 MME, 所述群 组无线接入承载响应消息中携带建立的第一下行隧道端口标识及 IP地址; 若基站在接收到第三集群通信群组承载激活请求消息时, 接收到使用 已建立的第一下行隧道端口标识及 IP地址的指示信息,则回复使用已建立的 参数的响应消息给 MME。
207、 MME接收终端发送的第一集群通信群组承载激活响应消息。
208、 MME发送第二集群通信群组承载激活响应消息给 SGW, SGW发 送第三集群通信群组承载激活响应消息给 PGW。
MME发送第二集群通信群组承载激活响应消息给 SGW,所述第二集群 通信群组承载激活响应消息中携带集群通信群组标识, 指定的接入点名称 和第一下行隧道端口标识及 IP地址, 建立从 SGW到基站的共享传输通道;
SGW根据集群通信群组标识和指定的接入点名称来决定之前是否已分 配一个第二下行隧道端口标识及 IP地址, 若是未分配, SGW分配第二下行 隧道端口标识及 IP地址, 并通过 SGW将所述第二下行隧道端口标识及 IP地 址携带在第三集群通信群组承载激活响应消息中发送给 PGW, 建立从 PGW 到 SGW的共享传输通道; 若是已分配, 也将第二下行隧道端口标识及 IP地 址携带在第三集群通信群组承载激活响应消息中发送给 PGW, 建立从 PGW 到 SGW的共享传输通道。 第二下行隧道端口标识及 IP地址是指 SGW分配的 S5或 S8接口的下行 GTP-U TEID及其 IP地址。
本发明实施例中, 从以上 201~208的步骤中分别建立了从集群服务器到 PGW的共享传输通道,从 PGW到 SGW的共享传输通道,从 SGW到基站的共 享传输通道, 从基站到终端的空口共享传输通道, 从而完成了从集群服务 器到终端的共享传输通道的建立过程。 这样实现了同一集群通信的多个集 群终端共享传输资源, 并且在集群终端移动切换时, 应用这些步骤可以保 证终端共享传输资源的连续性。
参阅图 4, 本发明提供的集群通信的方法的另一实施例包括:
301、 终端建立缺省 7 载。
本步骤与图 3对应的实施例中的步骤 201相同。 302、 MME发送第四集群通信群组承载激活请求消息给 SGW, SGW发 送第五集群通信群组承载激活请求消息给 PGW。
MME发送第四集群通信群组承载激活请求消息给 SGW,所述第四集群 通信群组承载激活请求消息中携带集群通信群组标识和指定的接入点名 称, 如果 MME判断出基站已建立第一下行隧道端口标识及 IP地址, 则在第 四集群通信群组承载激活请求消息中携带上第一下行隧道端口标识及 IP地 址,如果判断出基站未建立第一下行隧道端口标识及 IP地址,则在第四集群 通信群组承载激活请求消息中不携带第一下行隧道端口标识及 IP地址;
SGW根据集群通信群组标识和指定的接入点名称来决定之前是否已分 配一个第二下行隧道端口标识及 IP地址, 若是未分配, SGW分配第二下行 隧道端口标识及 IP地址, 并通过 SGW将所述第二下行隧道端口标识及 IP地 址携带在第五集群通信群组承载激活请求消息中发送给 PGW, 建立从 PGW 到 SGW的共享传输通道; 若是已分配, 也将第二下行隧道端口标识及 IP地 址携带在第五集群通信群组承载激活请求消息中发送给 PGW, 表明使用从 PGW到 SGW的已建立的共享传输通道。
303、 群组接入授权。
本步骤与步骤 203相同, 不再做详细描述。
304、 PGW向 SGW发送第四集群通信群组承载激活响应消息, SGW发 送第五集群通信群组承载激活响应消息给 MME。
所述第四和第五集群通信群组承载激活响应消息携带所述集群通信群 组标识和指定的接入点名称。本步骤的过程与 204相同,只是消息名称不同, 在此不做详细赘述。
305~307的过程与步骤 205~207过程相同。
308、 MME发送群组承载修改请求消息给 SGW。
所述群组承载修改请求消息中携带第一下行隧道端口标识及 IP地址 ,建 立从 SGW到基站的共享传输通道。
309、 MME接收 SGW发送的群组承载修改响应。
实际上, 若本发明实施例中 MME判断出基站已建立第一下行隧道端口 标识及 IP地址, 则本发明实施例中的步骤 306则发送的是使用已建立的第一 下行隧道端口标识及 IP地址的响应消息;这种情况下 ,本发明实施例中的 308 和 309也可以省略, 在步骤 302中 MME就可以将第一下行隧道端口标识及 IP 地址携带在第四集群通信群组承载激活请求消息中发送给 SGW。
本发明实施例中, 分别建立了从集群服务器到 PGW的共享传输通道, 从 PGW到 SGW的共享传输通道, 从 SGW到基站的共享传输通道, 从基站到 终端的共享传输通道, 从而完成了从集群服务器到终端的共享传输通道的 建立过程。 这样实现了同一集群通信的多个终端共享传输资源, 并且在终 端移动时还可以应用应用这些步骤以保证终端共享传输资源的连续性。
上述实施例从 MME触发建立共享传输通道的角度介绍了本发明建立从 集群服务器到终端的共享传输通道的建立过程, 由于是由 MME来触发建立 共享传输通道的, 因此在切换过程中, 当集群终端移动到一个新的网络节 点 (如新的基站,新的 MME, 新的 SGW )后, MME会为此集群终端建立共 享的传输通道。 实际上不仅 MME可以触发共享传输通道的建立, 终端和集 群服务器也可以触发共享传输通道的建立, 下面介绍终端触发共享传输通 道的建立过程:
参阅图 5 , 图 5的共享传输通道的建立过程与图 3对应的实施例基本相 同,只是步骤 402中是终端触发加入集群通信群组, 而不是 MME触发加入集 群通信群组; 参阅图 6, 图 6中的共享传输通道的建立过程与图 4对应的实施 例基本相同, 只是步骤 502中是由终端触发加入集群通信群组, 并且还包括 了步骤 504和步骤 505, PGW通知终端为其加入的集群通信进行集群共享传 输通道的建立; 步骤 504、由 PGW向 SGW发送群组承载激活通知,再由 SGW 发送群组承载激活通知给 MME; 步骤 505, MME发送群组承载激活通知给 终端。 后续步骤 507~513与图 4对应的实施例中的步骤 302到 309相同, 在此 不再做详细赘述, 只是需要指出的是步骤 507后的分组数据网关可能与步骤 前面步骤中的分组数据网关不是同一个实体。
下面详细介绍集群服务器触发共享传输通道的建立过程:
参阅图 7, 本发明实施例详细介绍集群服务器触发共享传输通道建立的 过程:
601、 建立缺省 7 载。 602、 PGW代理终端向集群服务器发送注册请求。
步骤 601中建立 Default Bearer时, PGW需要给终端分配 IP地址, 此 IP地 址, 可以是集群服务器所分配, 此时 PGW需要代理终端进行终端的 IP地址 分配过程: 如动态主机设置协议 (DHCP , Dynamic Host Configuration Protocol )或远程用户拨号认证系统 ( Radius, Remote Authentication Dial In User Service )或 Diameter过程, Diameter协议被 Internet工程任务组 ( IETF, Internet Engineering Task Force ) 的认证授权与计费 ( AAA, Authentication Authorisation Accounting )工作组作为下一代的 AAA协议标准; Diameter (其 直译为 "直径", 意为着 Diameter协议是 RADIUS (其直译为 "半径")协议 的升级版本协议), 此时集群服务器就可得到终端的标识, 如网络接入标识 符(NAI, Network Access Identifier ), IMSL MSISDN等。
若终端在步骤 601中得到其 IP地址后, 终端通过此 IP地址终端向集群服 务器发送注册消息, 此消息可能只提供终端的标识如 NAI、会话初始协议统 一资源标识 ( SIP URI , Session Initiation Protocol Uniform Resource Identifier ), IMSL MSISDN等, 或终端的标识与集群通信组的标识如 NAI、 SIP URI与 IP组播地址等)。
603、 使用认证。
若终端是通过 PGW进行的注册, 那么集群服务器的授权过程与上述几 个实施例相同, 若是终端直接向集群服务器进行的注册, 则认证过程是在 终端于集群服务器之间进行, 认证过程可以 ^^于多媒体子系统(IMS , IP Multimedia Subsystems )的认证过程或超文本传输协议摘要 ( HTTP Digest, 其中 HTTP为 Hyper Text Transfer Protocol )过程。
604、 集群服务器发起共享传输通道的建立, 向策略决策点发送认证授 权请求(AAR, ( AA-Request ) 消息。
AAR消息包含有一个集群通信组接收方的会话信息 (见 TS29.214及
TS23.203 ), 即传输集群通信时的媒体参数, 如媒体的类型, 需要的带宽等 参数。
605、 策略决策点发送重认证授权请求(RAR, Re-Auth-Request )消息 给 PGW。 PCRF根据步骤 604中的会话信息, 决策出此集群通信时的业务数据流 (SDF, Service Data Flow)的服务质量 QoS参数,并通过 Gx接口发送 RAR消息 到 PGW, RAR请求消息中包含了 SDF的 Packet Filter (分组过滤器)参数及 对应的 QoS参数(见 TS29.212及 TS23.203 )。
606~610的过程与图 5对应的实施例的过程相同, 在此不再做详细介绍。 611 , PGW向策略决策点发送重认证与授权应答 RAA(Re-Auth-Answer ) 响应消息。
612、 策略决策点向集群服务器发送认证授权与计费 AAA ( Authentication Authorisation Accounting )响应消息。
本发明实施例中, 从集群服务器发起共享传输通道的建立的角度, 详 细描述了共享传输通道的建立过程。
参阅图 8, 本发明提供的分组数据网网关 70的一实施例包括:
第一通道建立单元 701 ,用于建立从集群服务器到 PGW的第一共享传输 通道;
第一接收单元 702 , 用于从所述第一通道建立单元 701建立的第一共享 传输通道接收集群服务器下发的数据;
第一发送单元 703 , 用于将所述第一接收单元 702接收到的数据通过第 二共享传输通道, 第三共享传输通道和第四共享传输通道发送给集群终端, 以使得所有集群终端接收到的同一数据在集群服务器到集群终端之间建立 的共享传输通道的共同路径上只传递一次; 其中, 所述第二共享传输通道 为 PGW到 SGW的共享传输通道;所述第三共享传输通道为 SGW到基站的共 享传输通道; 所述第四共享传输通道为基站到集群终端所在小区的共享传 输通道。
本发明实施例中,第一通道建立单元 701建立从集群服务器到 PGW的第 一共享传输通道; 第一接收单元 702从所述第一通道建立单元 701建立的第 一共享传输通道接收集群服务器下发的数据; 第一发送单元 703将所述第一 接收单元 702接收到的数据通过第二共享传输通道, 第三共享传输通道和第 四共享传输通道发送给集群终端, 以使得所有集群终端接收到的同一数据 在集群服务器到集群终端之间建立的共享传输通道的共同路径上只传递一 次。 与现有技术相比, 本发明实施例提供的分组数据网网关, 对于集群终 端接收到的同一数据在共同的路径上只传递一次, 可以节约集群数据的传 输资源。
参阅图 8 , 本发明提供的分组数据网网关 70的另一实施例还包括: 所述第一接收单元 702, 还用于在第一通道建立单元 701建立第一共享 传输通道前接收终端或 MME触发的加入集群通信群组的请求。
所述第一接收单元 702, 还用于在第一通道建立单元 701建立第一共享 传输通道前接收集群服务器触发的建立第一共享传输通道的请求。
参阅图 9, 本发明实施例提供的移动管理实体 80的一实施例包括: 第二通道建立单元 801 , 用于建立从 SGW到基站的第三共享传输通道, 所述第三共享传输通道用于传递从 SGW转发的数据, 所述数据是集群服务 器下发的, 并通过第一共享传输通道, 第二共享传输通道, 第三共享传输 通道和第四共享传输通道传递给集群终端, 以使得所有集群终端接收到的 同一数据在集群服务器到集群终端之间建立的共享传输通道的共同路径上 只传递一次;
其中, 所述第一共享传输通道为集群服务器到 PGW的共享传输通道; 所述第二共享传输通道为 PGW到 SGW的共享传输通道; 所述第四共享传输 通道为基站到集群终端所在小区的共享传输通道。
参阅图 10, 本发明实施例提供的移动管理实体 80的另一实施例包括: 第二接收单元 802,用于接收 SGW发送来的第一集群通信群组承载激活 请求消息, 所述第一集群通信群组承载激活请求消息携带所述集群通信群 组标识和指定的接入点名称;
第一判断单元 803, 用于根据所述第二接收单元 802接收到的集群通信 群组标识和指定的接入点名称判断基站是否已分配第一下行隧道端口标识 及 IP地址;
第二发送单元 804 , 用于在所述第一判断单元 803判断出基站已建立第 一下行隧道端口标识及 IP地址时 ,发送第二集群通信群组承载激活请求消息 给基站,并同时发送指示基站使用已建立的第一下行隧道端口标识及 IP地址 的指示信息;
所述第二接收单元 802, 还用于在所述发送单元 804发送指示基站使用 已建立的第一下行隧道端口标识及 IP地址的指示信息后,接收基站回复的使 用已建立的参数的响应消息;
所述第二发送单元 804 , 还用于在所述第一判断单元 803判断出基站未 建立第一下行隧道端口标识及 IP地址时,发送第二集群通信群组承载激活请 求消息给基站, 并同时发送建立群组无线接入承载请求给基站;
所述第二接收单元 802, 还用于在所述第二发送单元 804发送建立群组 无线接入承载请求后, 接收基站发送的群组无线接入承载响应消息, 所述 群组无线接入承载响应消息中携带基站分配的第一下行隧道端口标识及 IP 地址;
所述第二发送单元 804, 还用于发送第二集群通信群组承载激活响应消 息给 SGW, 所述第二集群通信群组承载激活响应消息中携带集群通信群组 标识, 指定的接入点名称和第一下行隧道端口标识及 IP地址, 完成建立从 SGW到基站的共享传输通道。
本发明实施例中,详细的描述了 MME控制建立从 SGW到基站的共享传 输通道的过程。
参阅图 11 , 本发明实施例提供的服务网关 90的一实施例包括: 第三通道建立单元 901 , 用于建立从 PGW到 SGW的第二共享传输通道; 第三接收单元 902 , 用于从所述第三通道建立单元 901建立的第二共享 传输通道接收 PGW转发的数据, 所述数据是集群服务器下发的, 并通过第 一共享传输通道传递给 PGW;
第三发送单元 903 , 用于将所述第三接收单元 902接收到的数据通过第 三共享传输通道和第四共享传输通道发送给集群终端, 以使得所有集群终 端接收到的同一数据在集群服务器到集群终端之间建立的共享传输通道的 共同路径上只传递一次;其中,所述第一共享传输通道为集群服务器到 PGW 的共享传输通道; 所述第三共享传输通道为 SGW到基站的共享传输通道; 所述第四共享传输通道为基站到集群终端所在小区的共享传输通道。
参阅图 12, 本发明实施例提供的服务网关 90的另一实施例还包括: 第三接收单元 902 ,还用于接收 MME发送第二集群通信群组承载激活响 应消息, 所述第二集群通信群组承载激活响应消息中携带集群通信群组标 识和指定的接入点名称;
第二判断单元 904 , 根据集群通信群组标识和指定的接入点名称判断是 否已分配第二下行隧道端口标识及 IP地址;
第三发送单元 903 , 还用于当第二判断单元 904判断出已分配第二下行 隧道端口标识及 IP地址时,将所述第二下行隧道端口标识及 IP地址携带在第 三集群通信群组承载激活响应消息中发送给 PGW, 以建立从 PGW到 SGW的 共享传输通道;
地址分配单元 905 , 用于当第二判断单元 904判断出未分配第二下行隧 道端口标识及 IP地址时, 根据所述集群通信群组标识和指定的接入点名称 , 分配第二下行隧道端口标识及 IP地址;
所述第三发送单元 903 , 还用于将所述第二下行隧道端口标识及 IP地址 携带在第三集群通信群组承载激活响应消息中发送给 PGW, 以建立从 PGW 到 SGW的共享传输通道。
本发明实施例中,详细的描述了 SGW控制建立从从 PGW到 SGW的共享 传输通道。
参阅图 13 , 本发明实施例提供的基站 100的一实施例包括:
第四通道建立单元 1001 , 用于建立从基站到集群终端所在小区的第四 共享传输通道, 每个小区中的所有集群终端共用一条第四共享传输通道; 第四接收单元 1002, 用于从第三共享传输通道接收 SGW转发的数据, 所述数据是集群服务器下发的, 并通过第一共享传输通道, 第二共享传输 通道, 第三共享传输通道传递给基站;
第四发送单元 1003 , 用于将所述第四接收单元 1002接收到数据通过第 四通道建立单元 1001建立的第四共享传输通道发送给集群终端, 以使得所 有集群终端接收到的同一数据在集群服务器到集群终端之间建立的共享传 输通道的共同路径上只传递一次; 其中, 所述第一共享传输通道为集群服 务器到 PGW的共享传输通道; 所述第二共享传输通道为 PGW到 SGW的共享 传输通道; 所述第四共享传输通道为基站到集群终端所在小区的共享传输 通道。
本发明实施例还提供了一种终端, 本发明实施例提供的终端包括: 第五接收单元, 用于从第四共享传输通道接收基站转发的数据, 所述 数据是集群服务器下发的, 并通过第一共享传输通道, 第二共享传输通道, 第三共享传输通道和第四共享传输通道传递给集群终端, 以使得所有集群 终端接收到的同一数据在集群服务器到集群终端之间建立的共享传输通道 的共同路径上只传递一次; 其中, 所述第一共享传输通道为集群服务器到 分组数据网网关的共享传输通道; 所述第二共享传输通道为分组数据网网 关到服务网关的共享传输通道; 所述第三共享传输通道为服务网关到基站 的共享传输通道; 所述第四共享传输通道为基站到集群终端所在小区的共 享传输通道。
本发明实施例提供的集群通信系统的一实施例包括:
分组数据网网关建立从集群服务器到分组数据网网关的第一共享传输 通道;
服务网关建立从分组数据网网关到服务网关的第二共享传输通道; 移动管理实体建立从服务网关到基站的第三共享传输通道;
基站建立从基站到集群终端所在小区的第四共享传输通道;
所述分组数据网网关从第一共享传输通道接收集群服务器下发的数 据;
所述服务网关从所述第二共享传输通道接收所述数据, 并将所述数据 转发到第三共享传输通道;
所述基站从所述第三共享传输通道接收所述数据, 并将所述数据转发 到第四共享传输通道;
终端从所述第四共享传输通道接收所述数据, 所述数据是集群服务器 下发的, 并通过第一共享传输通道、 第二共享传输通道、 第三共享传输通 道和第四共享传输通道传递给集群终端, 所有集群终端接收到的同一数据 在集群服务器到集群终端之间建立的共享传输通道的共同路径上只传递一 次。
当集群终端移动时, 还包括: 更新从集群服务器到所述移动集群终端 的共享传输通道。
所述更新从集群服务器到所述移动集群终端的共享传输通道包括: 当所述集群终端移动到原基站的另一个小区时, 若原基站为移动后所 述集群终端所在的小区已建立有空口共享传输通道, 则使用此共享通道, 否则此基站为此小区建立空口共享传输通道;
当所述集群终端移动到同一个 SGW下的另一个基站时, 若此基站为所 述集群终端所在的小区已经建立有空口共享传输通道, 则使用此共享通道, 否则此基站为所述集群终端所在的小区建立空口共享传输通道;
当所述集群终端移动到另一个 SGW时,若此 SGW与 PGW已建立有共享 传输通道,则使用此共享通道,否则建立从 PGW到此 SGW的共享传输通道。
当建立有从 SGW到基站的共享传输通道, 则使用此共享通道, 否则建 立 SGW到此基站的共享传输通道,
当建立有从基站到集群终端所在小区的空口共享传输通道, 则使用此 共享通道, 否则此基站为此集群终端所在的小区建立共享的空口传输通道。
对于本发明实施例提供的集群通信系统, 可参阅图 3〜图 7理解传输通道 的建立过程, 通过图 2理解数据从集群服务器传递到终端的过程。 本发明实 施例提供的系统, 既可以节省传输资源, 又能保证终端移动后仍能接收到 集群数据。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分步 骤是可以通过程序来指令相关的硬件完成, 该程序可以存储于一种计算机 可读存储介质中, 上述提到的存储介质可以是只读存储器, 磁盘或光盘等。
以上对本发明所提供的集群通信的方法、 装置及系统进行了详细介绍, 对于本领域的一般技术人员, 依据本发明实施例的思想, 在具体实施方式 及应用范围上均会有改变之处, 因此, 本说明书内容不应理解为对本发明 的限制

Claims

权利要求
1、 一种集群通信的方法, 其特征在于, 包括:
分组数据网网关建立从集群服务器到所述分组数据网网关的第一共享 传输通道;
所述分组数据网网关从所述第一共享传输通道接收集群服务器下发的 数据;
所述分组数据网网关将接收到的所述数据通过第二共享传输通道、 第 三共享传输通道和第四共享传输通道发送给集群终端, 以使得所有集群终 端接收到的同一数据在所述集群服务器到所述集群终端之间建立的共享传 输通道的共同路径上只传递一次;
其中, 所述第二共享传输通道为所述分组数据网网关到服务网关的共 享传输通道; 所述第三共享传输通道为所述服务网关到基站的共享传输通 道; 所述第四共享传输通道为所述基站到所述集群终端所在小区的共享传 输通道。
2、 根据权利要求 1所述的方法, 其特征在于, 所述分组数据网网关建 立从集群服务器到分组数据网网关的第一共享传输通道前, 还包括:
所述分组数据网网关接收终端或移动性管理实体触发的加入集群通信 群组的请求, 所述加入集群通信群组的请求中携带所述终端要加入的集群 通信群组的标识;
将所述终端加入所述标识的集群通信群组, 所述加入集群通信群组的 终端为集群终端。
3、 根据权利要求 1所述的方法, 其特征在于, 所述分组数据网网关建 立从集群服务器到所述分组数据网网关的第一共享传输通道前, 还包括: 所述分组数据网网关接收所述集群服务器触发的建立第一共享传输通 道的请求。
4、 一种集群通信的方法, 其特征在于, 包括:
移动性管理实体建立从服务网关到基站的第三共享传输通道, 所述第 三共享传输通道用于传递从所述服务网关转发的数据, 所述数据是集群服 务器下发的, 并通过第一共享传输通道、 第二共享传输通道、 第三共享传 输通道和第四共享传输通道传递给集群终端, 以使得所有集群终端接收到 的同一数据在集群服务器到集群终端之间建立的共享传输通道的共同路径 上只传递一次;
其中, 所述第一共享传输通道为所述集群服务器到所述分组数据网网 关的共享传输通道; 所述第二共享传输通道为所述分组数据网网关到服务 网关的共享传输通道; 所述第四共享传输通道为所述基站到所述集群终端 所在小区的共享传输通道。
5、 根据权利要求 4所述的方法, 其特征在于, 所述移动管理实体建立 从服务网关到基站的第三共享传输通道包括:
移动管理实体接收服务网关发送来的第一集群通信群组承载激活请求 消息, 所述第一集群通信群组承载激活请求消息携带所述集群通信群组标 识和指定的接入点名称;
根据所述集群通信群组标识和指定的接入点名称判断基站是否已分配 第一下行隧道端口标识及 IP地址;
若是, 发送第二集群通信群组承载激活请求消息给基站, 并同时发送 指示基站使用已建立的第一下行隧道端口标识及 IP地址的指示信息,接收基 站回复的使用已建立的参数的响应消息;
若否, 发送第二集群通信群组承载激活请求消息给基站, 并同时发送 建立群组无线接入承载请求给基站, 接收基站发送的群组无线接入承载响 应消息, 所述群组无线接入承载响应消息中携带基站分配的第一下行隧道 端口标识及 IP地址;
发送第二集群通信群组承载激活响应消息给服务网关, 所述第二集群 通信群组承载激活响应消息中携带集群通信群组标识, 指定的接入点名称 和第一下行隧道端口标识及 IP地址,完成建立从服务网关到基站的第三共享 传输通道。
6、 一种集群通信的方法, 其特征在于, 包括:
服务网关建立从分组数据网关到所述服务网关的第二共享传输通道; 所述服务网关从所述第二共享传输通道接收所述分组数据网网关转发 的数据, 所述数据是集群服务器下发的, 并通过第一共享传输通道传递给 所述分组数据网网关;
所述服务网关将所述接收到的数据通过第三共享传输通道和第四共享 传输通道发送给集群终端, 以使得所有集群终端接收到的同一数据在集群 服务器到集群终端之间建立的共享传输通道的共同路径上只传递一次; 其中, 所述第一共享传输通道为集群服务器到分组数据网网关的共享 传输通道; 所述第三共享传输通道为服务网关到基站的共享传输通道; 所 述第四共享传输通道为基站到集群终端所在小区的共享传输通道。
7、 根据权利要求 6所述的方法, 其特征在于, 所述服务网关建立从分 组数据网网关到服务网关的第二共享传输通道包括:
所述服务网关接收移动性管理实体发送第二集群通信群组承载激活响 应消息, 所述第二集群通信群组承载激活响应消息中携带集群通信群组标 识和指定的接入点名称;
所述服务网关根据所述集群通信群组标识和所述指定的接入点名称判 断是否已分配第二下行隧道端口标识及 IP地址;
若是,所述服务网关将所述第二下行隧道端口标识及 IP地址携带在第三 集群通信群组承载激活响应消息中发送给分组数据网网关, 以建立从分组 数据网网关到服务网关的共享传输通道;
若否, 所述服务网关根据所述集群通信群组标识和指定的接入点名称, 分配第二下行隧道端口标识及 IP地址,并将所述第二下行隧道端口标识及 IP 地址携带在第三集群通信群组承载激活响应消息中发送给分组数据网网 关, 以建立从分组数据网网关到服务网关的共享传输通道。
8、 一种集群通信的方法, 其特征在于, 包括:
基站建立从基站到集群终端所在小区的第四共享传输通道, 每个小区 中的所有集群终端共用所述第四共享传输通道;
所述基站从第三共享传输通道接收服务网关转发的数据, 所述数据是 集群服务器下发的, 并通过第一共享传输通道, 第二共享传输通道, 第三 共享传输通道传递给基站;
所述基站将接收到数据通过第四共享传输通道发送给集群终端, 以使 得所有集群终端接收到的同一数据在集群服务器到集群终端之间建立的共 享传输通道的共同路径上只传递一次;
其中, 所述第一共享传输通道为集群服务器到分组数据网关的共享传 输通道; 所述第二共享传输通道为分组数据网网关到服务网关的共享传输 通道; 所述第三共享传输通道为服务网关到基站的共享传输通道。
9、 根据权利要求 8所述的方法, 其特征在于, 所述基站建立从基站到 集群终端所在小区的第四共享传输通道前, 还包括:
所述基站接收移动管理实体发送的第二集群通信群组承载激活请求消 息,
若接收到所述第二集群通信群组承载激活请求消息的同时, 还接收到 了使用已建立的第一下行隧道端口标识及 IP地址的指示信息,则使用已建立 的第一下行隧道端口标识及 IP地址的指示信息,并发送使用已建立的参数的 响应消息;
若接收到所述第二集群通信群组承载激活请求消息的同时, 还接收到 了建立群组无线接入承载请求,则分配第一下行隧道端口标识及 IP地址,并 发送群组无线接入承载响应消息, 所述群组无线接入承载响应消息中携带 基站分配的第一下行隧道端口标识及 IP地址。
10、 一种集群通信的方法, 其特征在于, 包括:
集群终端从第四共享传输通道接收基站转发的数据, 所述数据是集群 服务器下发的, 并通过第一共享传输通道, 第二共享传输通道, 第三共享 传输通道和第四共享传输通道传递给集群终端, 所有集群终端接收到的同 一数据在集群服务器到集群终端之间建立的共享传输通道的共同路径上只 传递一次;
其中, 所述第一共享传输通道为集群服务器到分组数据网网关的共享 传输通道; 所述第二共享传输通道为分组数据网网关到服务网关的共享传 输通道; 所述第三共享传输通道为服务网关到基站的共享传输通道; 所述 第四共享传输通道为基站到集群终端所在小区的共享传输通道。
11、 根据权利要求 10所述的方法, 其特征在于, 所述集群服务器到集 群终端之间建立的共享传输通道的共同路径具体为: 当所述集群终端在多个服务网关的多个基站及多小区的覆盖下时, 第 一共享传输通道为所有的集群终端的共同路径;
对于同一个服务网关下的多个集群终端, 则第二共享传输通道为所述 同一个服务网关下的所有的集群终端的共同路径;
对于同一个基站下的多个集群终端, 则第三共享传输通道为该基站下 的所有的集群终端的共同路径;
对于同一个基站中同一个小区覆盖下的多个集群终端, 则第四共享传 输通道为同一个小区下的所有的集群终端的共同路径。
12、 一种分组数据网网关, 其特征在于, 包括:
第一通道建立单元, 用于建立从集群服务器到分组数据网网关的第一 共享传输通道;
第一接收单元, 用于从所述第一通道建立单元建立的第一共享传输通 道接收集群服务器下发的数据;
第一发送单元, 用于将所述第一接收单元接收到的数据通过第二共享 传输通道、 第三共享传输通道和第四共享传输通道发送给集群终端, 以使 得所有集群终端接收到的同一数据在集群服务器到集群终端之间建立的共 享传输通道的共同路径上只传递一次; 其中, 所述第二共享传输通道为分 组数据网网关到服务网关的共享传输通道; 所述第三共享传输通道为服务 网关到基站的共享传输通道; 所述第四共享传输通道为基站到集群终端所 在小区的共享传输通道。
13、 根据权利要求 12所述的分组数据网网关, 其特征在于,
所述第一接收单元, 还用于在第一通道建立单元建立第一共享传输通 道前接收终端或移动管理实体触发的加入集群通信群组的请求。
14、 根据权利要求 12所述的分组数据网网关, 其特征在于,
所述第一接收单元, 还用于在第一通道建立单元建立第一共享传输通 道前接收集群服务器触发的建立第一共享传输通道的请求。
15、 一种移动管理实体, 其特征在于, 包括:
第二通道建立单元, 用于建立从服务网关到基站的第三共享传输通道, 所述第三共享传输通道用于传递从服务网关转发的数据, 所述数据是集群 服务器下发的, 并通过第一共享传输通道、 第二共享传输通道、 第三共享 传输通道和第四共享传输通道传递给集群终端, 以使得所有集群终端接收 到的同一数据在集群服务器到集群终端之间建立的共享传输通道的共同路 径上只传递一次;
其中, 所述第一共享传输通道为集群服务器到分组数据网网关的共享 传输通道; 所述第二共享传输通道为分组数据网网关到服务网关的共享传 输通道; 所述第四共享传输通道为基站到集群终端所在小区的共享传输通 道。
16、 根据权利要求 15所述的移动管理实体, 其特征在于, 还包括: 第二接收单元, 用于接收服务网关发送来的第一集群通信群组承载激 活请求消息, 所述第一集群通信群组承载激活请求消息携带所述集群通信 群组标识和指定的接入点名称;
第一判断单元, 用于根据所述第二接收单元接收到的集群通信群组标 识和指定的接入点名称判断基站是否已分配第一下行隧道端口标识及 IP地 址;
第二发送单元, 用于在所述第一判断单元判断出基站已建立第一下行 隧道端口标识及 IP地址时, 发送第二集群通信群组承载激活请求消息给基 站,并同时发送指示基站使用已建立的第一下行隧道端口标识及 IP地址的指 示信息;
所述第二接收单元, 还用于在所述发送单元发送指示基站使用已建立 的第一下行隧道端口标识及 IP地址的指示信息后,接收基站回复的使用已建 立的参数的响应消息;
所述第二发送单元, 还用于在所述第一判断单元判断出基站未建立第 一下行隧道端口标识及 IP地址时 ,发送第二集群通信群组承载激活请求消息 给基站, 并同时发送建立群组无线接入承载请求给基站;
所述第二接收单元, 还用于在所述第二发送单元发送建立群组无线接 入承载请求后, 接收基站发送的群组无线接入承载响应消息, 所述群组无 线接入承载响应消息中携带基站分配的第一下行隧道端口标识及 IP地址; 所述第二发送单元, 还用于发送第二集群通信群组承载激活响应消息 给服务网关, 所述第二集群通信群组承载激活响应消息中携带集群通信群 组标识,指定的接入点名称和第一下行隧道端口标识及 IP地址,完成建立从 服务网关到基站的第三共享传输通道。
17、 一种服务网关, 其特征在于, 包括:
第三通道建立单元, 用于建立从分组数据网网关到服务网关的第二共 享传输通道;
第三接收单元, 用于从所述第三通道建立单元建立的第二共享传输通 道接收分组数据网网关转发的数据, 所述数据是集群服务器下发的, 并通 过第一共享传输通道传递给分组数据网网关;
第三发送单元, 用于将所述第三接收单元接收到的数据通过第三共享 传输通道和第四共享传输通道发送给集群终端, 以使得所有集群终端接收 到的同一数据在集群服务器到集群终端之间建立的共享传输通道的共同路 径上只传递一次; 其中, 所述第一共享传输通道为集群服务器到分组数据 网网关的共享传输通道; 所述第三共享传输通道为服务网关到基站的共享 传输通道; 所述第四共享传输通道为基站到集群终端所在小区的共享传输 通道。
18、 根据权利要求 17所述的服务网关, 其特征在于, 还包括: 所述第三接收单元, 还用于接收移动管理实体发送第二集群通信群组 承载激活响应消息, 所述第二集群通信群组承载激活响应消息中携带集群 通信群组标识和指定的接入点名称;
第二判断单元, 根据集群通信群组标识和指定的接入点名称判断是否 已分配第二下行隧道端口标识及 IP地址;
所述第三发送单元, 还用于当第二判断单元判断出已分配第二下行隧 道端口标识及 IP地址时,将所述第二下行隧道端口标识及 IP地址携带在第三 集群通信群组承载激活响应消息中发送给分组数据网网关, 以建立从分组 数据网网关到服务网关的共享传输通道;
地址分配单元, 用于当第二判断单元判断出未分配第二下行隧道端口 标识及 IP地址时,根据所述集群通信群组标识和指定的接入点名称,分配第 二下行隧道端口标识及 IP地址; 所述第三发送单元,还用于将所述第二下行隧道端口标识及 IP地址携带 在第三集群通信群组承载激活响应消息中发送给分组数据网网关, 以建立 从分组数据网网关到服务网关的共享传输通道。
19、 一种基站, 其特征在于, 包括:
第四通道建立单元, 用于建立从基站到集群终端所在小区的第四共享 传输通道, 每个小区中的所有集群终端共用一条第四共享传输通道;
第四接收单元, 用于从第三共享传输通道接收服务网关转发的数据, 所述数据是集群服务器下发的, 并通过第一共享传输通道, 第二共享传输 通道, 第三共享传输通道传递给基站;
第四发送单元, 用于将所述第四接收单元接收到数据通过第四通道建 立单元建立的第四共享传输通道发送给集群终端, 以使得所有集群终端接 收到的同一数据在集群服务器到集群终端之间建立的共享传输通道的共同 路径上只传递一次; 其中, 所述第一共享传输通道为集群服务器到分组数 据网网关的共享传输通道; 所述第二共享传输通道为分组数据网网关到服 务网关的共享传输通道; 所述第四共享传输通道为基站到集群终端所在小 区的共享传输通道。
20、 一种终端, 其特征在于, 包括:
第五接收单元, 用于从第四共享传输通道接收基站转发的数据, 所述 数据是集群服务器下发的, 并通过第一共享传输通道, 第二共享传输通道, 第三共享传输通道和第四共享传输通道传递给集群终端, 以使得所有集群 终端接收到的同一数据在集群服务器到集群终端之间建立的共享传输通道 的共同路径上只传递一次; 其中, 所述第一共享传输通道为集群服务器到 分组数据网网关的共享传输通道; 所述第二共享传输通道为分组数据网网 关到服务网关的共享传输通道; 所述第三共享传输通道为服务网关到基站 的共享传输通道; 所述第四共享传输通道为基站到集群终端所在小区的共 享传输通道。
21、 一种集群通信系统, 其特征在于, 包括:
分组数据网网关建立从集群服务器到分组数据网网关的第一共享传输 通道; 服务网关建立从分组数据网网关到服务网关的第二共享传输通道; 移动管理实体建立从服务网关到基站的第三共享传输通道;
基站建立从基站到集群终端所在小区的第四共享传输通道;
所述分组数据网网关从第一共享传输通道接收集群服务器下发的数 据;
所述服务网关从所述第二共享传输通道接收所述数据, 并将所述数据 转发到第三共享传输通道;
所述基站从所述第三共享传输通道接收所述数据, 并将所述数据转发 到第四共享传输通道;
终端从所述第四共享传输通道接收所述数据, 所述数据是集群服务器 下发的, 并通过第一共享传输通道、 第二共享传输通道、 第三共享传输通 道和第四共享传输通道传递给集群终端, 所有集群终端接收到的同一数据 在集群服务器到集群终端之间建立的共享传输通道的共同路径上只传递一 次。
22、 根据权利要求 21所述的系统, 其特征在于, 所述集群服务器到集 群终端之间建立的共享传输通道的共同路径具体为:
当所述集群终端在多个服务网关的多个基站及多小区的覆盖下时, 第 一共享传输通道为所有的集群终端的共同路径;
对于同一个服务网关下的多个集群终端, 则第二共享传输通道为所述 同一个服务网关下的所有的集群终端的共同路径;
对于同一个基站下的多个集群终端, 则第三共享传输通道为该基站下 的所有的集群终端的共同路径;
同一个基站中同一个小区覆盖下的多个集群终端, 则第四共享传输通 道为同一个小区下的所有的集群终端的共同路径。
23、 根据权利要求 21或 22所述的系统, 其特征在于, 当集群终端移动 时, 还包括: 更新从集群服务器到所述移动集群终端的共享传输通道。
24、 根据权利要求 23所述的系统, 其特征在于, 所述更新从集群服务 器到所述移动集群终端的共享传输通道包括:
当所述集群终端移动到原基站的另一个小区时, 若原基站为移动后所 述集群终端所在的小区已建立有空口共享传输通道, 则使用此共享通道, 否则此基站为此小区建立空口共享传输通道;
当所述集群终端移动到同一个服务网关下的另一个基站时, 若此基站 为所述集群终端所在的小区已经建立有空口共享传输通道, 则使用此共享 通道, 否则此基站为所述集群终端所在的小区建立空口共享传输通道; 当所述集群终端移动到另一个服务网关时, 若此服务网关与分组数据 网网关已建立有共享传输通道, 则使用此共享通道, 否则建立从分组数据 网网关到此服务网关的共享传输通道;
当已建立有从服务网关到基站的共享传输通道, 则使用此共享通道, 否则建立服务网关到此基站的共享传输通道;
当建立有从基站到集群终端所在小区的空口共享传输通道, 则使用此 共享通道, 否则此基站为此集群终端所在的小区建立共享的空口传输通道。
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