CN108012342B - Method and device for processing multicast service in L TE-M network - Google Patents
Method and device for processing multicast service in L TE-M network Download PDFInfo
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Abstract
The invention discloses a method and a device for processing multicast service in L TE-M network, wherein the method comprises the steps that a TCF sends a group call establishment message for establishing the multicast call service to a TMF, the group call establishment message comprises a call type identifier, a group number identifier and a multicast IP, the TCF receives a group call establishment response message which is sent by the TMF and comprises successful receiving information, the group call establishment response message also carries a TMF side user face IP port corresponding to a multicast group, the TCF sends a group call MODIFY message carrying a downlink data gateway side user face IP and a user face TEID to the TMF when determining that a full call called process in the multicast group is established according to the TMF side user face IP port so that the TMF sends multicast adding information to multicast routing equipment, and the TCF receives a successful response of the multicast call service establishment sent when the TMF confirms that the multicast adding is successful.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a method and a device for processing multicast service in L TE-M network.
Background
L TE-M is a TD-L TE (Time sharing L TE, Time Division L TE) system for urban rail transit integrated Service bearer requirements, and supports train-ground Communication Service, vehicle-mounted video monitoring Service, PIS vehicle-mounted video Service, trunking scheduling Service, etc. of a train operation control system, as shown in a system architecture diagram of L TE-M (long Term Evolution system of subway, L ong Term Evolution-Metro) in fig. 1, currently, a B-TrunC (broadband trund trunking Communication) protocol or eMBMS (enhanced multimedia broadcast Multicast Service) protocol is used as a Multicast protocol in L TE-M network.
L PIS (passenger information system) vehicle-mounted video service supported by TE-M means that video or image information is transmitted to a vehicle-mounted TAU (train Access Unit) through broadcasting or multicasting on the ground, the vehicle-mounted TAU is not the termination point of multicasting data, and the vehicle-mounted TAU transmits the multicasting data to each video player for playing.
However, in the current B-TrunC protocol of L TE-M network, no service can fully satisfy the requirement of multicast call service in the pin multicast service of the rail transit system.
The multicast call in the B-TrunC protocol is specifically: a unidirectional voice call or a video call initiated by a dispatcher to all UEs (user equipments) in a certain group requires that a data source DC (dispatcher) is a service initiator, and other UEs can only answer the call but cannot speak.
The forwarding of the video in the B-TrunC protocol to the group specifically includes: the dispatching station is used for the group calling service which is initiated by one group and only has video, the video comes from other terminals or video sources, and the forwarded video stream is directly forwarded to the UE in the group from the core network without passing through the dispatching station.
Therefore, in the L TE-M network, if a unicast scheme is adopted, for example, if the transparent transmission of multicast video data to multiple UEs is implemented in a unicast manner, the system bandwidth is heavily occupied, and the practicability is not strong.
In addition, the multicast call and video forwarding to the group in the above B-TrunC protocol have the following disadvantages: firstly, the DC is required to be a service initiator, namely, each time of service initiation needs manual participation; secondly, after the service is initiated, for example, when the DC is restarted or the SCC (Switch and Control Center) is restarted, the service cannot be automatically reestablished; and thirdly, data processing is divided into unicast from a data source to a cluster core network and multicast from the cluster core network to a terminal, namely data from the data source to the cluster core network, the destination address is an Internet Protocol (IP) and a port of the cluster core network, and the core network modifies the data destination IP and the port into a group IP and a port configured in a system and used for receiving by the UE.
Therefore, the unicast scheme, the multicast call and the service of forwarding the video to the group cannot meet the requirement of the PIS multicast service.
Disclosure of Invention
In view of the above problems, the present invention provides a multicast service processing method and apparatus in an L TE-M network, which can meet the requirement of the current PIS vehicular video multicast service.
In a first aspect, the present invention provides a method for processing a multicast service in an L TE-M network, including:
a TCF (Trunking Control Function) sends a group call setup message for setting up a multicast call service to a TMF (Trunking Media Function), where the group call setup message includes: calling type identification, group number identification and multicast IP; the calling type, the group number identification and the multicast IP are all configured in the OMC in advance;
the TCF receives a group call establishment response message which is sent by the TMF and comprises receiving success information; the group call establishment response message also carries a TMF side user plane IP port corresponding to the multicast group;
the TCF sends a group calling MODIFY message carrying a downlink data gateway side user plane IP and a user plane TEID to the TMF when determining that a full call called process in a multicast group is established according to the TMF side user plane IP port, so that the TMF sends multicast join information to multicast routing equipment after receiving the group calling MODIFY message;
and the TCF receives a successful response of successful establishment of the multicast call service sent when the TMF confirms that the multicast join is successful.
Optionally, before the step of the TCF sending the group call setup message to the TMF, the method further includes:
after the TCF is started, reading PIS multicast group information established according to the call type, the group number identification and the multicast IP in the OMC; or, the TCF reads the call type, the group number identification and the PIS multicast group information established by the multicast IP in the OMC according to OM configuration;
optionally, the group number is identified as a PIS multicast group number.
In a second aspect, the present invention provides a method for processing a multicast service in an L TE-M network, including:
the TMF receives a group call establishment message sent by the TCF, wherein the group call establishment message comprises: calling type identification, group number identification and multicast IP; the calling type, the group number identification and the multicast IP are all configured in the OMC in advance;
the TMF determines that a multicast call service starts to be established according to the multicast call message, and then sends a group call establishment response message to the TCF, wherein the group call establishment response message comprises: a TMF side user interface IP port corresponding to the multicast group and the receiving success information of the group call establishing message;
the TMF receives a group call MODIFY message which is sent by the TCF and carries a downlink data gateway side user plane IP and a user plane TEID, wherein the group call MODIFY message is sent when the TCF determines that a full call called process in a multicast group is established according to a TMF side user plane IP port;
after receiving the group calling MODIFY message, the TMF sends multicast join information to multicast routing equipment;
and the TMF receives the multicast adding success information sent by the multicast routing equipment and sends a success response of the group calling MODIFY message to the TCF according to the multicast adding success information.
In a third aspect, the present invention provides a method for processing a multicast service in an L TE-M network, which is characterized by comprising:
when the OM triggers the multicast release, the TCF sends a group call release message for releasing the multicast call service to the TMF, where the group call release message includes: information for indicating the TMF to perform multicast release and identification information of a multicast group;
and the TCF releases the full call called process corresponding to the multicast group according to the identification information of the multicast group.
Optionally, the method further comprises: and the TCF receives a message of successful multicast release sent by the TMF, wherein the message of multicast release is sent by the TMF after the multicast release is finished by performing the multicast release according to the group call release message.
Optionally, the identification information of the multicast group includes: group number identification and/or multicast IP.
In a fourth aspect, the present invention provides a method for processing a multicast service in an L TE-M network, including:
when the OM triggers the multicast release, the TMF receives a group call release message sent by the TCF for releasing the multicast call service, where the group call release message includes: information for indicating the TMF to perform multicast release and identification information of a multicast group;
and the TMF releases the related information in the multicast group corresponding to the identification information of the multicast group according to the group call release message.
Optionally, the method further comprises: and the TMF sends a message of successful multicast release to the TCF after the completion of the multicast release.
Optionally, the identification information of the multicast group includes: group number identification and/or multicast IP.
In a fifth aspect, the present invention provides an L TE-M network multicast service processing apparatus, including:
a sending unit, configured to send a group call setup message used for establishing a multicast call service to a TMF, where the group call setup message includes: calling type identification, group number identification and multicast IP; the calling type, the group number identification and the multicast IP are all configured in the OMC in advance;
a receiving unit, configured to receive a group call setup response message including reception success information sent by the TMF; the group call establishment response message also carries a TMF side user plane IP port corresponding to the multicast group;
the sending unit is further configured to send a group call MODIFY message carrying a downlink data gateway side user plane IP and a user plane TEID to the TMF when the apparatus determines that a full call terminating process in the multicast group has been established according to the TMF side user plane IP port, so that the TMF sends multicast join information to the multicast routing device after receiving the group call MODIFY message;
the receiving unit is further configured to receive a successful response that the establishment of the multicast call service is successful, where the successful response is sent when the TMF confirms that the multicast join is successful.
Optionally, the apparatus further comprises:
and the reading unit is used for reading the information in the PIS multicast group established according to the call type, the group number identification and the multicast IP in the OMC after the device is started.
In a sixth aspect, the present invention provides an L TE-M network multicast service processing apparatus, including:
a receiving unit, configured to receive a group call setup message sent by a TCF, where the group call setup message includes: calling type identification, group number identification and multicast IP; the calling type, the group number identification and the multicast IP are all configured in the OMC in advance;
a sending unit, configured to send a group call setup response message to the TCF when the apparatus determines that a multicast call service starts to be setup according to the multicast call message, where the group call setup response message includes: a TMF side user interface IP port corresponding to the multicast group and the receiving success information of the group call establishing message;
the receiving unit is further configured to receive a group call MODIFY message that is sent by the TCF and carries a downlink data gateway side user plane IP and a user plane TEID, where the group call MODIFY message is sent by the TCF when determining that a full call called process in a multicast group has been established according to the TMF side user plane IP port;
the sending unit is further configured to send multicast join information to the multicast routing device;
the receiving unit is further configured to receive multicast join success information sent by the multicast routing device, and send a success response of the group call MODIFY message to the TCF according to the multicast join success information.
According to the technical scheme, the method and the device for processing the multicast service in the L TE-M network actively initiate the group call establishment process through the TCF, so that the requirement of the PIS video multicast service in the rail transit can be better met, and the requirement of other external network multicast services can also be supported.
Drawings
Fig. 1 is a schematic architecture diagram of a current cluster core network;
fig. 2 to fig. 7 are flowcharts of a multicast service processing method in an L TE-M network according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of an L TE-M network multicast service processing apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments, but not all embodiments, of the present invention.
It should be noted that the words "first", "second", "third" and "fourth" are used herein only to distinguish the same names from each other, and do not imply a relationship or order between the names.
The embodiment of the invention provides a scheme for initiating a PIS video multicast service by an SCC composed of a TCF and a TMF in a cluster core network, such as: the cluster core network actively initiates broadcast group calling (full calling) and multicast joining, and transparently transmits the multicast packet of the PIS server to the cluster group. The dynamic establishment and release of multicast service can be controlled by OM (operation management).
Before the flow of establishing and releasing the group call of the embodiment of the invention is realized, the configuration of the multicast data needs to be carried out in advance. For example, an OMC (Operation and Maintenance Center) may configure an ID number, a cluster group number, a multicast address, and a multicast port corresponding to a multicast service, as shown in the following multicast data table 1. After the cluster core network is started, the relevant configuration of the multicast service is read, and the multicast service initiated by the network side is actively triggered according to the configuration result.
Multicast data table 1
In the embodiment of the present invention, after the SCC (i.e., the union of the TCF and the TMF) starts the board and the cluster core network acquires the multicast-related configuration, a multicast establishment procedure is initiated. Or the operator initiates the multicast establishing process through the OM operation. The specific establishment process is shown in the flow charts shown in fig. 2 to 4 below.
Referring to fig. 2 and fig. 4, the present embodiment discloses a flow chart of a multicast service processing method in an L TE-M network, where the method of the present embodiment is mainly directed to a method for establishing a multicast call flow, an execution subject of the method is a TCF, and the method of the present embodiment may include the following steps 201 to 204:
201. the TCF sends a group call establishment message (SCC _ GROUPCA LL _ SETUP _ REQ) for establishing a multicast call service to the TMF, wherein the group call establishment message comprises a call type identifier, a group number identifier and a multicast IP, and the call type, the group number identifier and the multicast IP are all configured in the OMC in advance.
For example, the group number identification may be a PIS multicast group number.
202. The TCF receives a group call establishment response message which is sent by the TMF and comprises receiving success information; the group call establishment response message also carries the user plane IP port of the TMF side corresponding to the multicast group.
203. And when determining that a full call called process in the multicast group is established according to the TMF side user plane IP port, the TCF sends a group call MODIFY message (SCC _ GROUPCA LL _ MOD _ REQ) carrying a downlink data gateway side user plane IP and a user plane TEID to the TMF, so that the TMF sends multicast joining information to the multicast routing equipment after receiving the group call MODIFY message.
It is understood that, after receiving the group call MODIFY message, the TMF may store the downlink data gateway side user plane IP and the user plane TEID, so as to transmit the multimedia data after the multicast call service is successfully established.
The multicast routing device may be a multicast routing device corresponding to the multicast IP. For example, in this embodiment, the TMF sends multicast join information to the multicast routing device after receiving the group call MODIFY message. In other embodiments, the TMF may also send multicast join information to the multicast routing device after receiving the group call setup message, which is not limited in this embodiment and may be changed according to actual requirements.
It should be noted that the procedure for establishing a full call recipient in a multicast group may be established with reference to a scheme in the prior art, and this embodiment does not improve it, and does not limit it.
204. And the TCF receives a successful response of successful establishment of the multicast call service sent when the TMF confirms that the multicast join is successful.
Optionally, before the step 201, the method shown in fig. 1 may further include a step 100 not shown in the figure:
200. and after the TCF is started, reading PIS multicast group information established according to the call type, the group number identification and the multicast IP in the OMC.
It can be understood that, in fig. 2, after the TCF board is started, the PIS multicast group number in the OM configuration is read, and then the flow of multicast call setup is initiated. Of course, if the OM does not configure the PIS multicast group, the above flow will not be initiated.
In other embodiments, the TCF may also read the call type, the group number identifier, the information in the PIS multicast group established by the multicast IP, and the like in the OMC according to the OM configuration.
That is to say, the cluster core network configures and stores multicast configuration information such as a multicast IP and a multicast port through the OMC, and the configuration information establishes a basis for the network side multicast service. In addition, the cluster core network triggers the establishment of the multicast service according to the OM configuration. In the following embodiments, the cluster core network may also trigger multicast service release and the like according to OM configuration. The multicast data in this embodiment can be transmitted to the terminal through the trunking communication system without any modification to the data.
It is understood that in practical applications, OM is an interface (i.e., interface protocol name) between the OMC and the SCC. And the OMC server transmits the PIS multicast information to the SCC through an OM interface. In this embodiment, only the functions of TCF and TMF are adjusted, and SCC is an aggregate of TCF and TMF.
In addition, if the ACTION is initiated after the number of the PIS multicast group is increased by the OM during the operation of the SCC, the SCC dynamically establishes the PIS multicast and re-executes the above method flow.
In this embodiment, the group call service in the L TE-M network does not need to be initiated by a DC, and is automatically established and added to a multicast by a network side according to OM configuration, for example, when the SCC is restarted, the group call service can be automatically and quickly restored without human intervention, thereby improving the user experience.
Particularly, the PIS multicast data in this embodiment is transmitted to the UE through the full call without any modification when being transmitted to the network side, so that the requirements of the video multicast service of the PIS in the rail transit are met, and the requirements of other external network multicast services can be supported.
Referring to fig. 3 and fig. 4, the present embodiment discloses a flow chart of a multicast service processing method in an L TE-M network, where the method of the present embodiment is mainly directed to a method for establishing a multicast call, an execution subject of the method is TMF, and the method of the present embodiment may include the following steps 301 to 305:
301. the TMF receives a group call establishment message sent by the TCF, wherein the group call establishment message comprises: calling type identification, group number identification and multicast IP; the calling type, the group number identification and the multicast IP are all configured in the OMC in advance.
302. The TMF determines that the multicast call service starts to be established according to the multicast call message, and then sends a group call establishment response message to the TCF, wherein the group call establishment response message comprises: and the TMF side user plane IP port corresponding to the multicast group and the receiving success information of the group call establishing message.
303. And the TMF receives a group call MODIFY message which is sent by the TCF and carries a downlink data gateway side user plane IP and a user plane TEID, wherein the group call MODIFY message is sent when the TCF determines that a full call called process in a multicast group is established according to the TMF side user plane IP port.
304. The TMF sends multicast join information to the multicast routing device.
In this embodiment, the example is that the TMF sends the multicast join information to the multicast routing device after receiving the group call MODIFY message, and in other embodiments, the TMF may also send the multicast join information to the multicast routing device after receiving the group call setup message.
305. And the TMF receives the multicast adding success information sent by the multicast routing equipment and sends the success response of the group calling MODIFY message to the TCF according to the multicast adding success information.
In the embodiment of the method, the cluster core network configures and stores multicast configuration information such as a multicast IP (Internet protocol) and a multicast port through the OMC, and the configuration information establishes a basis for the network side multicast service; the cluster core network automatically triggers the establishment and release of the multicast service, after the SCC is restarted, the service can be automatically rebuilt, and other logic network elements are restarted without influencing the service; the multicast data of this embodiment can be transmitted to the terminal/UE through the trunking communication system without any modification to the data, and the terminal/UE of this embodiment is not a multicast data packet termination point.
In the embodiment of the invention, the operator initiates the multicast release process through OM operation. The specific release process is shown in the following flowcharts of fig. 5 to 7.
Referring to fig. 5 and fig. 7, the present embodiment discloses a flow chart of a multicast service processing method in an L TE-M network, where the method of the present embodiment is mainly directed to a method for a multicast call release procedure, an execution subject of the method is a TCF, and the method of the present embodiment may include the following steps 501 to 502:
501. when OM triggers the multicast release, TCF sends a group call release message (SCC _ GROUPCA LL _ RE L _ REQ) for releasing the multicast call service to TMF, wherein the group call release message comprises information for indicating the TMF to release the multicast and identification information (such as call ID) of the multicast group;
502. the TCF releases the full call called process corresponding to the multicast group.
Optionally, in practical application, if the TMF completes releasing the multicast, the TCF further receives a message that the multicast release is successful, where the message that the multicast release is successful is sent by the TMF according to the group call release message and is sent after the multicast release is completed.
It should be noted that, the full-call called release process in the multicast group may refer to a scheme in the prior art for release, and this embodiment does not improve it, and does not limit it.
In a specific implementation process, when the OM triggers the multicast release, one implementation manner may also be: the TCF initiates release to the network side and the TMF side simultaneously, the TMF and the network side release respective resources respectively, mutual care is not needed, and the TCF obtains a final result. The above-mentioned fig. 5 is only an alternative implementation, and the embodiment does not limit the implementation.
For example, the identification information of the multicast group may include: group number identification and/or multicast IP.
The flow shown in fig. 5 may be implemented by OM ACTION trigger.
Referring to fig. 6 and fig. 7, the present embodiment discloses a flow chart of a multicast service processing method in an L TE-M network, where the method of the present embodiment is mainly directed to a method for a multicast call release procedure, an execution subject of the method is TMF, and the method of the present embodiment may include the following steps 601 to 603:
601. when the OM triggers the multicast release, the TMF receives a group call release message sent by the TCF for releasing the multicast call service, where the group call release message includes: information for indicating the TMF to perform multicast release and identification information of a multicast group;
602. and the TMF releases the related information in the multicast group corresponding to the identification information of the multicast group according to the group call release message.
Optionally, after the TMF multicast release is completed, a message that the multicast release is successful is also sent to the TCF.
For example, the identification information of the multicast group may include: group number identification and/or multicast IP.
The TMF resource release and the multicast full call called release in this embodiment have no interaction, and are both controlled by the TCF, so as to ensure that the resources corresponding to the PIS multicast are all released.
As shown in fig. 8, an embodiment of the present invention discloses a structural schematic diagram of an L TE-M network multicast service processing apparatus, where a sending unit and a receiving unit of the apparatus of this embodiment mainly aim at actions of a multicast call setup procedure.
The multicast service processing apparatus shown in fig. 8 includes: a sending unit 801 and a receiving unit 802, where the sending unit 801 is configured to send a group call setup message for establishing a multicast call service to a TMF, where the group call setup message includes: calling type identification, group number identification and multicast IP; the calling type, the group number identification and the multicast IP are all configured in the OMC in advance;
the receiving unit 802 is configured to receive a group call setup response message that includes information of successful reception and is sent by the TMF; the group call establishment response message also carries a TMF side user plane IP port corresponding to the multicast group;
the sending unit 801 is further configured to send a group call MODIFY message carrying a downlink data gateway side user plane IP and a user plane TEID to the TMF when the apparatus determines that a full call terminating process in the multicast group has been established according to the TMF side user plane IP port, so that the TMF sends multicast join information to a multicast routing device corresponding to the TMF side user plane IP port;
the receiving unit 802 is further configured to receive a successful response that the establishment of the multicast call service is successful, where the successful response is sent when the TMF confirms that the multicast join is successful.
Optionally, the apparatus shown in fig. 8 may further include a reading unit, not shown in the following figures, and the reading unit may be configured to read information in the PIS multicast group established according to the call type, the group number identifier, and the multicast IP in the OMC after the apparatus is started.
The multicast service processing apparatus shown in fig. 8 can perform the actions of the TCF shown in fig. 2 and fig. 4, and reference is made to the description of the above method embodiment, which is not described in detail again.
In a first alternative implementation, the sending unit and the receiving unit shown in fig. 8 may perform the following operations:
the receiving unit 802 is configured to receive a group call setup message sent by a TCF, where the group call setup message includes: calling type identification, group number identification and multicast IP; the calling type, the group number identification and the multicast IP are all configured in the OMC in advance;
the sending unit 801 is configured to send a group call setup response message to the TCF when the apparatus determines that a multicast call service starts to be setup according to the multicast call message, where the group call setup response message includes: a TMF side user interface IP port corresponding to the multicast group and the receiving success information of the group call establishing message;
the receiving unit 802 is further configured to receive a group call MODIFY message that is sent by the TCF and carries a downlink data gateway side user plane IP and a user plane TEID, where the group call MODIFY message is sent by the TCF when determining that a full call called process in a multicast group has been established according to the TMF side user plane IP port;
the sending unit 801 is further configured to send multicast join information to a multicast routing device corresponding to a TMF-side user plane IP port according to the group call MODIFY message;
the receiving unit 802 is further configured to receive multicast join success information sent by the multicast routing device, and send a success response of the group call MODIFY message to the TCF according to the multicast join success information.
In this first alternative implementation, the multicast service processing apparatus at this time may perform the actions of the TMF shown in fig. 2 and fig. 4, and refer to the description of the foregoing method embodiment, which is not described in detail again in this embodiment.
It should be noted that the multicast service processing apparatus of this embodiment may be located in an SCC, and further, when the SCC of this embodiment is applied in an L TE-M network, other network elements do not need to be modified, which may be implemented conveniently and reduce cost.
Those skilled in the art will appreciate that although some embodiments described herein include some features included in other embodiments instead of others, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments.
Those skilled in the art will appreciate that the steps of the embodiments may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that a microprocessor or Digital Signal Processor (DSP) may be used in practice to implement some or all of the functionality of some or all of the components according to embodiments of the present invention. The present invention may also be embodied as apparatus or device programs (e.g., computer programs and computer program products) for performing a portion or all of the methods described herein.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (10)
1. A method for processing multicast service in L TE-M network is characterized in that the method comprises:
the TCF sends a group call setup message for establishing a multicast call service to the TMF, where the group call setup message includes: calling type identification, group number identification and multicast IP; the calling type, the group number identification and the multicast IP are all configured in an operation maintenance center OMC in advance;
the TCF receives a group call establishment response message which is sent by the TMF and comprises receiving success information; the group call establishment response message also carries a TMF side user plane IP port corresponding to the multicast group;
the TCF sends a group calling MODIFY message carrying a downlink data gateway side user plane IP and a user plane TEID to the TMF when determining that a full call called process in a multicast group is established according to the TMF side user plane IP port, so that the TMF sends multicast join information to multicast routing equipment after receiving the group calling MODIFY message;
and the TCF receives a successful response of successful establishment of the multicast call service sent when the TMF confirms that the multicast join is successful.
2. The method of claim 1, wherein prior to the step of the TCF sending the group call setup message to the TMF, the method further comprises:
after the TCF is started, reading PIS multicast group information established according to the call type, the group number identification and the multicast IP in the OMC; or, the TCF reads the call type, the group number identification and the PIS multicast group information established by the multicast IP in the OMC according to the operation management OM configuration;
and/or the presence of a gas in the gas,
the group number is identified as a PIS multicast group number.
3. A method for processing multicast service in L TE-M network is characterized in that the method comprises:
the cluster media function TMF receives a group call establishment message sent by a cluster control function TCF, wherein the group call establishment message comprises: calling type identification, group number identification and multicast IP; the calling type, the group number identification and the multicast IP are all configured in an operation maintenance center OMC in advance;
the TMF determines that a multicast call service starts to be established according to the multicast call message, and then sends a group call establishment response message to the TCF, wherein the group call establishment response message comprises: a TMF side user interface IP port corresponding to the multicast group and the receiving success information of the group call establishing message;
the TMF receives a group call MODIFY message which is sent by the TCF and carries a downlink data gateway side user plane IP and a user plane TEID, wherein the group call MODIFY message is sent when the TCF determines that a full call called process in a multicast group is established according to a TMF side user plane IP port;
after receiving the group calling MODIFY message, the TMF sends multicast join information to multicast routing equipment;
and the TMF receives the multicast adding success information sent by the multicast routing equipment and sends a success response of the group calling MODIFY message to the TCF according to the multicast adding success information.
4. A method for processing multicast service in L TE-M network is characterized in that the method comprises:
when the operation management OM triggers multicast release, the TCF sends a group call release message for releasing a multicast call service to the TMF, where the group call release message includes: information for indicating the TMF to perform multicast release and identification information of a multicast group;
and the TCF releases the full call called process corresponding to the multicast group according to the identification information of the multicast group.
5. The method of claim 4, further comprising:
and the TCF receives a message of successful multicast release sent by the TMF, wherein the message of successful multicast release is sent by the TMF after the multicast release is finished by performing the multicast release according to the group call release message.
6. A method for processing multicast service in L TE-M network is characterized in that the method comprises:
when the operation management OM triggers multicast release, the cluster media function TMF receives a group call release message sent by the cluster control function TCF for releasing the multicast call service, where the group call release message includes: information for indicating the TMF to perform multicast release and identification information of a multicast group;
and the TMF releases the related information in the multicast group corresponding to the identification information of the multicast group according to the group call release message.
7. The method of claim 6, further comprising:
and the TMF sends a message of successful multicast release to the TCF after the completion of the multicast release.
8. An L TE-M network multicast service processing device, comprising:
a sending unit, configured to send a group call setup message for establishing a multicast call service to a TMF, where the group call setup message includes: calling type identification, group number identification and multicast IP; the calling type, the group number identification and the multicast IP are all configured in an operation maintenance center OMC in advance;
a receiving unit, configured to receive a group call setup response message including reception success information sent by the TMF; the group call establishment response message also carries a TMF side user plane IP port corresponding to the multicast group;
the sending unit is further configured to send a group call MODIFY message carrying a downlink data gateway side user plane IP and a user plane TEID to the TMF when the apparatus determines that a full call terminating process in the multicast group has been established according to the TMF side user plane IP port, so that the TMF sends multicast join information to the multicast routing device after receiving the group call MODIFY message;
the receiving unit is further configured to receive a successful response that the establishment of the multicast call service is successful, where the successful response is sent when the TMF confirms that the multicast join is successful.
9. The apparatus of claim 8, further comprising:
and the reading unit is used for reading the information in the PIS multicast group established according to the call type, the group number identification and the multicast IP in the OMC after the device is started.
10. An L TE-M network multicast service processing device, comprising:
a receiving unit, configured to receive a group call setup message sent by a cluster control function TCF, where the group call setup message includes: calling type identification, group number identification and multicast IP; the calling type, the group number identification and the multicast IP are all configured in an operation maintenance center OMC in advance;
a sending unit, configured to send a group call setup response message to the TCF when the apparatus determines that a multicast call service starts to be setup according to the multicast call message, where the group call setup response message includes: a TMF side user interface IP port corresponding to the multicast group and the receiving success information of the group call establishing message;
the receiving unit is further configured to receive a group call MODIFY message that is sent by the TCF and carries a downlink data gateway side user plane IP and a user plane TEID, where the group call MODIFY message is sent by the TCF when determining that a full call called process in a multicast group has been established according to the TMF side user plane IP port;
the sending unit is further configured to send multicast join information to the multicast routing device;
the receiving unit is further configured to receive multicast join success information sent by the multicast routing device, and send a success response of the group call MODIFY message to the TCF according to the multicast join success information.
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| CN113133130B (en) * | 2019-12-30 | 2022-05-20 | 成都鼎桥通信技术有限公司 | Communication method and device |
| CN111417082A (en) * | 2020-03-26 | 2020-07-14 | 西安震有信通科技有限公司 | All-member call processing method, device, equipment and medium for emergency call |
| CN111447571B (en) * | 2020-04-03 | 2021-08-13 | 北京运安智维科技有限公司 | PIS service data transmission method and system of rail transit train-ground wireless communication system |
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| US5197083A (en) * | 1989-11-30 | 1993-03-23 | Sip-Societa' Italiana Per L'esercizio Delle Telecomunicazioni P.A. | Multimedia protocol interface for 64 kbit/s data flow |
| CN105828302A (en) * | 2015-01-05 | 2016-08-03 | 普天信息技术有限公司 | Method and device for speaking right distribution in trunking system |
| WO2016161510A1 (en) * | 2015-04-07 | 2016-10-13 | Sierra Wireless, Inc. | Method and apparatus for communicating system information and random access in a wireless system |
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| US5197083A (en) * | 1989-11-30 | 1993-03-23 | Sip-Societa' Italiana Per L'esercizio Delle Telecomunicazioni P.A. | Multimedia protocol interface for 64 kbit/s data flow |
| CN105828302A (en) * | 2015-01-05 | 2016-08-03 | 普天信息技术有限公司 | Method and device for speaking right distribution in trunking system |
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