CN109429184B - Method and device for establishing MBMS multicast session - Google Patents
Method and device for establishing MBMS multicast session Download PDFInfo
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- CN109429184B CN109429184B CN201710764973.6A CN201710764973A CN109429184B CN 109429184 B CN109429184 B CN 109429184B CN 201710764973 A CN201710764973 A CN 201710764973A CN 109429184 B CN109429184 B CN 109429184B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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Abstract
The embodiment of the invention provides a method and a device for establishing an MBMS multicast session, wherein the method comprises the following steps: when a Multimedia Broadcast Multicast Service (MBMS) multicast session is established, determining a Service Area (SA) where each member terminal in a group corresponding to the MBMS multicast session is located; based on a first corresponding relation between a pre-configured SA and a multicast traffic channel MTCH, selecting a target MTCH from one or more MTCHs corresponding to the SA where each member terminal is located; and sending the target MTCH corresponding to the SA where each member terminal is located to each member terminal through a signaling multicast channel so that each member terminal receives the data of the group on the target MTCH of the SA where each member terminal is located. The method and the device provided by the embodiment of the invention can reduce the establishment time of the MBMS multicast session and save multicast resources.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a method and a device for establishing an MBMS multicast session.
Background
In the prior art, in a Multicast Single Frequency Network (MBSFN) cluster, a Multimedia Broadcast Multicast Service (MBMS) Multicast is used to Broadcast a group Service.
When an MBMS multicast session is established, it is necessary to allocate frequency resources to a pre-established group, and broadcast group data in one or more service areas SA corresponding to the group based on the allocated frequency resources, the establishment process of the MBMS multicast session usually requires several seconds, and cannot meet the requirement that the establishment time is less than 300 ms.
Disclosure of Invention
The embodiment of the invention provides a method and a device for establishing an MBMS multicast session, which are used for reducing the establishment time of the MBMS multicast session and saving multicast resources.
A first aspect of an embodiment of the present invention provides a method for establishing an MBMS multicast session, where the method includes:
when a Multimedia Broadcast Multicast Service (MBMS) multicast session is established, determining a Service Area (SA) where each member terminal in a group corresponding to the MBMS multicast session is located;
based on a first corresponding relation between a pre-configured SA and a multicast traffic channel MTCH, selecting a target MTCH from one or more MTCHs corresponding to the SA where each member terminal is located;
and sending the target MTCH corresponding to the SA where each member terminal is located to each member terminal through a signaling multicast channel so that each member terminal receives the data of the group on the target MTCH of the SA where each member terminal is located.
A second aspect of the present invention provides an apparatus for establishing an MBMS multicast session, where the apparatus includes:
the system comprises a determining module, a judging module and a judging module, wherein the determining module is used for determining a service area SA where each member terminal in a group corresponding to a Multimedia Broadcast Multicast Service (MBMS) multicast session is located when the MBMS multicast session is established;
a selecting module, configured to select a target MTCH from one or more MTCHs corresponding to an SA in which each member terminal is located, based on a first correspondence between a preconfigured SA and a multicast traffic channel MTCH, respectively;
and the first broadcast module is used for sending the target MTCH corresponding to the SA where each member terminal is located to each member terminal through a signaling multicast channel so that each member terminal receives the data of the group on the target MTCH of the SA where each member terminal is located.
In the embodiment of the invention, when the MBMS multicast session is established, the service area SA where each member terminal in the group corresponding to the MBMS multicast session is located is determined, one target MTCH is respectively selected from one or more MTCHs corresponding to the SA where each member terminal is located based on the first corresponding relation between the SA and the MTCH which are configured in advance, and the target MTCH corresponding to the SA where each member terminal is located is sent to each member terminal through a signaling multicast channel, so that each member terminal receives the data of the MBMS multicast session on the target MTCH of the SA where each member terminal is located. In the embodiment of the invention, the SA corresponding to the group is determined through the SA where each member terminal in the group is located, so that the problem of multicast resource waste caused by improper group planning in the prior art can be avoided, and in addition, one or more MTCHs are distributed to each SA in advance, and one MTCH is directly selected from the SA to be used when the MBMS multicast session is established, so that the time required for establishing the MBMS multicast session is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a flowchart illustrating a method for establishing an MBMS multicast session according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for establishing an MBMS multicast session according to another embodiment of the present invention;
fig. 3 is a schematic structural diagram of an apparatus for establishing an MBMS multicast session according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an apparatus for establishing an MBMS multicast session according to another embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "comprises" and "comprising," and any variations thereof, in the description and claims of this invention, are intended to cover non-exclusive inclusions, e.g., a process or an apparatus that comprises a list of steps is not necessarily limited to those structures or steps expressly listed but may include other steps or structures not expressly listed or inherent to such process or apparatus.
The embodiment of the invention provides a method for establishing an MBMS multicast session, which may be implemented by an apparatus for establishing an MBMS multicast session (hereinafter referred to as an "establishing apparatus"), and the apparatus may be configured, but not limited to, in a group service server. Referring to fig. 1, fig. 1 is a flowchart of a method for establishing an MBMS multicast session according to an embodiment of the present invention, and as shown in fig. 1, the method includes the following steps:
In this embodiment, when a terminal moves from one SA to another SA, the terminal reports the location, that is, the SA where the terminal is located, to a group service server, and after receiving the SA reported by the terminal, the group service server matches the SA with the locally stored SA where the terminal is located, and if the SA is not consistent, the locally stored SA of the terminal is updated to the SA reported by the terminal, and if the SA is consistent, the SA is not updated. Optionally, when the MBMS multicast session is established, the establishing apparatus searches, according to a group identifier carried in the MBMS multicast session request, a terminal identifier corresponding to the group identifier in a local database, and then determines, according to a correspondence between the locally stored terminal identifier and a service area SA, a service area SA in which each member terminal in the group corresponding to the group identifier is located, where the service area SA may be one or multiple, that is, step 101 may exemplarily express that the establishing apparatus searches, according to the group identifier carried in the MBMS multicast session request, the service area SA in which each member terminal in the group corresponding to the group identifier is located.
Optionally, the selection method of the MTCH is not specifically limited in this embodiment. For example, the selection may be random or according to a predetermined policy.
Optionally, in the first mapping relationship, each SA corresponds to one or more MTCHs, and the MTCHs corresponding to each SA may be randomly allocated by the establishing apparatus, or may be allocated by the establishing apparatus according to the service type and/or load information of each SA. For example, MTCH is allocated to each SA according to a preset correspondence between the number of loads and the number of MTCH, or a corresponding number of MTCH is allocated according to the number of service types supported by the SA. It is understood that this is by way of illustration and not by way of limitation.
In addition, in this embodiment, the same MTCH does not exist between different SAs.
In this embodiment, step 103 includes the following implementation manners:
in a possible implementation manner, there is only one signaling multicast channel in the whole network, and the establishing apparatus sends the target MTCH corresponding to the SA where each member terminal is located to each member terminal through the signaling multicast channel unified in the whole network, so that each member terminal receives the group data on the target MTCH of the SA where each member terminal is located.
In another possible implementation manner, multiple signaling multicast channels exist in the whole network, and a second correspondence between the SA and the signaling multicast channels is established. For example, the entire network includes a signaling multicast channel a, a signaling multicast channel b, and a signaling multicast channel c, and the current network includes service areas SA1, SA2, and SA3, then the correspondence between the signaling multicast channel and the SA may be randomly established as: the signaling multicast channel a corresponds to SA1, the signaling multicast channel b corresponds to SA2, and the signaling multicast channel c corresponds to SA3, but in an actual scenario, the signaling multicast channel a may be randomly configured to have other corresponding relationships besides the above corresponding relationships, which is only an example and is not a unique limitation to the present invention. In this manner, the establishing apparatus transmits the target MTCH corresponding to the SA in which each member terminal is located to each member terminal on the signaling multicast channel corresponding to the SA in which each member terminal is located.
Optionally, when the terminal receives multiple MTCHs from the signaling multicast channel corresponding to the SA where the terminal is located, the terminal selects the MTCH bound to the SA where the terminal is located from the multiple MTCHs, and issues the message to the modem, so that the modem starts to monitor the data on the MTCH. Specifically, if a group corresponding to the SA in which the terminal is located has multiple MTCHs to receive, the MTCHs are received together and decoded by a preset voice format. Whereas unicast reception is triggered by RTP voice quality detection if the modem cannot acquire the MTCH configuration.
In this embodiment, when an MBMS multicast session is established, a service area SA in which each member terminal in a group corresponding to the MBMS multicast session is located is determined, based on a first correspondence between a preset SA and MTCH, a target MTCH is selected from one or more MTCHs corresponding to the SA in which each member terminal is located, and the target MTCH corresponding to the SA in which each member terminal is located is sent to each member terminal through a signaling multicast channel, so that each member terminal receives data of the MBMS multicast session on the target MTCH of the SA in which each member terminal is located. In the embodiment, the SA corresponding to the group is determined by the SA in which each member terminal in the group is located, so that the problem of multicast resource waste caused by improper group planning in the prior art can be avoided, and in addition, one or more MTCHs are allocated to each SA in advance in the embodiment, and one MTCH is directly selected from the SA to be used when the MBMS multicast session is established, so that the time required for establishing the MBMS multicast session is reduced.
Fig. 2 is a flowchart of a method for establishing an MBMS multicast session according to another embodiment of the present invention, as shown in fig. 2, based on the embodiment of fig. 1, the method includes:
Optionally, in the first mapping relationship, each SA corresponds to one or more MTCHs, and the MTCHs corresponding to each SA may be randomly allocated by the establishing apparatus, or may be allocated by the establishing apparatus according to the service type and/or load information of each SA. For example, MTCH is allocated to each SA according to a preset correspondence between the number of loads and the number of MTCH, or a corresponding number of MTCH is allocated according to the number of service types supported by the SA. It is understood that this is by way of illustration and not by way of limitation.
In addition, in this embodiment, the same MTCH does not exist between different SAs.
Optionally, in the second mapping relationship, the mapping relationship between the signaling multicast channel and the SAs may be established by the establishing device according to the service type of each SA in the network and/or the load information of each SA. For example, service areas with the same service type are configured to correspond to a same signaling multicast channel, or SAs with the same load number in a preset range are configured to correspond to a signaling multicast channel, or SAs with the same service type and the same load number in the preset range are configured to correspond to a signaling multicast channel. It is understood that this is by way of illustration and not by way of limitation.
Optionally, in an actual scenario, the second correspondence is not limited to the correspondence between the signaling multicast channel and the SA, and may further include a quality of service classification identifier QCI of the signaling multicast channel, an IP address and port information of the signaling multicast channel, and the like.
Optionally, in this embodiment, the first corresponding relationship and the second corresponding relationship are broadcasted for a preset number of times over the entire network, so that the terminal of each SA can accurately receive the first corresponding relationship and the second corresponding relationship.
In this embodiment, when an MBMS multicast session is established, a service area SA in which each member terminal in a group corresponding to the MBMS multicast session is located is determined, based on a first correspondence between a preset SA and MTCH, a target MTCH is selected from one or more MTCHs corresponding to the SA in which each member terminal is located, and the target MTCH corresponding to the SA in which each member terminal is located is sent to each member terminal through a signaling multicast channel, so that each member terminal receives data of the MBMS multicast session on the target MTCH of the SA in which each member terminal is located. In the embodiment, the SA corresponding to the group is determined by the SA in which each member terminal in the group is located, so that the problem of multicast resource waste caused by improper group planning in the prior art can be avoided, and in addition, one or more MTCHs are allocated to each SA in advance in the embodiment, and one MTCH is directly selected from the SA to be used when the MBMS multicast session is established, so that the time required for establishing the MBMS multicast session is reduced.
Fig. 3 is a schematic structural diagram of an apparatus for establishing an MBMS multicast session according to an embodiment of the present invention, and as shown in fig. 3, the apparatus includes:
a determining module 11, configured to determine, when a multimedia broadcast multicast service MBMS multicast session is established, a service area SA in which each member terminal in a group corresponding to the MBMS multicast session is located;
a selecting module 12, configured to select a target MTCH from one or more MTCHs corresponding to SAs in which member terminals are located, based on a first correspondence between a preconfigured SA and a multicast traffic channel MTCH, respectively;
a first broadcast module 13, configured to send the target MTCH corresponding to the SA where each member terminal is located to each member terminal through a signaling multicast channel, so that each member terminal receives the data of the group on the target MTCH of the SA where each member terminal is located.
Optionally, the determining module 11 is specifically configured to:
when receiving an MBMS multicast session request, searching a service area SA where each member terminal in a group corresponding to a group identifier is located according to the group identifier carried in the MBMS multicast session request.
Optionally, the first broadcasting module 13 includes:
and the first broadcast submodule is used for sending the target MTCH corresponding to the SA where each member terminal is located to each member terminal through a unified signaling multicast channel of the whole network.
Optionally, the first broadcasting module 13 includes:
and the second broadcast submodule is used for sending the target MTCH corresponding to the SA where each member terminal is located to each member terminal on the signaling multicast channel corresponding to the SA where each member terminal is located based on the second corresponding relation between the preset SA and the signaling multicast channel.
The device provided by this embodiment can execute the technical solution shown in fig. 1, and the execution mode and the beneficial effect thereof are similar and will not be described again here.
Fig. 4 is a schematic structural diagram of an apparatus for establishing an MBMS multicast session according to another embodiment of the present invention, as shown in fig. 4, based on the embodiment of fig. 3, the apparatus further includes:
a channel configuration module 14, configured to allocate a signaling multicast channel and at least one MTCH for each SA based on the service type of each SA and/or the load information of each SA, and generate a second correspondence between the SA and the signaling multicast channel and a first correspondence between the SA and the MTCH;
a second broadcasting module 15, configured to broadcast the first corresponding relationship and the second corresponding relationship over a whole network.
The device provided by this embodiment can execute the technical solution shown in fig. 2, and the execution mode and the beneficial effect thereof are similar and will not be described again here.
Finally, it should be noted that, as one of ordinary skill in the art will appreciate, all or part of the processes of the methods of the embodiments described above may be implemented by hardware related to instructions of a computer program, where the computer program may be stored in a computer-readable storage medium, and when executed, the computer program may include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), a Random Access Memory (RAM), or the like.
Each functional unit in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a separate product, may also be stored in a computer readable storage medium. The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A method for establishing an MBMS multicast session is characterized by comprising the following steps:
when a Multimedia Broadcast Multicast Service (MBMS) multicast session is established, determining a Service Area (SA) where each member terminal in a group corresponding to the MBMS multicast session is located;
based on a first corresponding relation between a pre-configured SA and a multicast traffic channel MTCH, selecting a target MTCH from one or more MTCHs corresponding to the SA where each member terminal is located;
sending the target MTCH corresponding to the SA where each member terminal is located to each member terminal through a signaling multicast channel so that each member terminal receives the data of the group on the target MTCH of the SA where each member terminal is located;
when establishing a Multimedia Broadcast Multicast Service (MBMS) multicast session, determining a Service Area (SA) where each member terminal in a group corresponding to the MBMS multicast session is located, including:
when receiving an MBMS multicast session request, searching a service area SA where each member terminal in a group corresponding to a group identifier is located according to the group identifier carried in the MBMS multicast session request.
2. The method of claim 1, wherein the sending the target MTCH corresponding to the SA in which each member terminal is located to each member terminal through a signaling multicast channel comprises:
and sending the target MTCH corresponding to the SA where each member terminal is located to each member terminal through a unified signaling multicast channel of the whole network.
3. The method of claim 1, wherein the sending the target MTCH corresponding to the SA in which each member terminal is located to each member terminal through a signaling multicast channel comprises:
and based on a second corresponding relation between the preset SA and the signaling multicast channel, sending the target MTCH corresponding to the SA where each member terminal is located to each member terminal on the signaling multicast channel corresponding to the SA where each member terminal is located.
4. The method of claim 3, wherein before determining the service area SA in which each member terminal in the group corresponding to the MBMS multicast session is located when the MBMS multicast session is established, the method further comprises:
distributing a signaling multicast channel and at least one MTCH for each SA based on the service type of each SA and/or the load information of each SA, and generating a second corresponding relation between the SA and the signaling multicast channel and a first corresponding relation between the SA and the MTCH;
and broadcasting the first corresponding relation and the second corresponding relation in the whole network.
5. An apparatus for establishing an MBMS multicast session, comprising:
the system comprises a determining module, a judging module and a judging module, wherein the determining module is used for determining a service area SA where each member terminal in a group corresponding to a Multimedia Broadcast Multicast Service (MBMS) multicast session is located when the MBMS multicast session is established;
a selecting module, configured to select a target MTCH from one or more MTCHs corresponding to an SA in which each member terminal is located, based on a first correspondence between a preconfigured SA and a multicast traffic channel MTCH, respectively;
a first broadcast module, configured to send a target MTCH corresponding to an SA in which each member terminal is located to each member terminal through a signaling multicast channel, so that each member terminal receives data of the group on the target MTCH of the SA in which each member terminal is located;
the determining module is specifically configured to:
when receiving an MBMS multicast session request, searching a service area SA where each member terminal in a group corresponding to a group identifier is located according to the group identifier carried in the MBMS multicast session request.
6. The apparatus of claim 5, wherein the first broadcasting module comprises:
and the first broadcast submodule is used for sending the target MTCH corresponding to the SA where each member terminal is located to each member terminal through a unified signaling multicast channel of the whole network.
7. The apparatus of claim 5, wherein the first broadcasting module comprises:
and the second broadcast submodule is used for sending the target MTCH corresponding to the SA where each member terminal is located to each member terminal on the signaling multicast channel corresponding to the SA where each member terminal is located based on the second corresponding relation between the preset SA and the signaling multicast channel.
8. The apparatus of claim 7, further comprising:
a channel configuration module, configured to allocate a signaling multicast channel and at least one MTCH for each SA based on a service type of each SA and/or load information of each SA, and generate a second correspondence between the SA and the signaling multicast channel and a first correspondence between the SA and the MTCH;
and the second broadcasting module is used for broadcasting the first corresponding relation and the second corresponding relation in the whole network.
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