CN110012437A

CN110012437A - A kind of sending method of multicast message, apparatus and system

Info

Publication number: CN110012437A
Application number: CN201810012362.0A
Authority: CN
Inventors: 李汉成
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-01-05
Filing date: 2018-01-05
Publication date: 2019-07-12
Anticipated expiration: 2038-01-05
Also published as: CN110012437B

Abstract

The application provides a kind of sending method of multicast message, apparatus and system.This method comprises: when first user's veil member cannot use the mode of Multicast Tunnel to send multicast message, it can not use and multicast message is passed through to each session that mode of unicast is sent to terminal respectively, and it only needs through the single tunnel between first user's veil member and communication network element, multicast message is sent to communication network element, is continued with by communication network element.Be conducive to the load bottleneck for avoiding the processing capacity of first user's veil member from becoming whole network, so as to realize the load balancing of network；Simultaneously as first user's veil member does not need copy packet to each session, to be conducive to mitigate the bandwidth consumption of copy packet bring.

Description

A kind of sending method of multicast message, apparatus and system

Technical field

This application involves mobile communication technology field more particularly to a kind of sending methods of multicast message, apparatus and system.

Background technique

Multicast (multicast), also referred to as multicast.Compared to the unicast of One-to-one communication (unicast) and it is a pair of it is all into The broadcast (broadcast) of row communication, multicast can efficiently solve the transmission and distribution problem of point to multi--point.In multicast side Under formula, data can be sent to one group of user along particular path, and identical multicast packet at most only has one on each chain road Part.For unicast, information is transmitted using multicast mode, the increase of user will not dramatically increase the load of network, alleviate The load of server and equipment.The user for not needing this message cannot receive this message.For broadcast, multicast packet only by It is transferred to the place of recipient, reduces redundant flow, has saved network bandwidth, reduced network load.

In the 5th generation (5th Generation, 5G) communication system, user's veil member of core net can receive user's Multicast message, and multicast message is encapsulated in Multicast Tunnel, it is sent as Multicast Tunnel message.

But in practical applications, caused due to the case where not supporting multicast there may be subnetwork in network appearance Multicast message can not be sent by way of multicast by stating user's veil member.Under the situation, it can only be sent out by way of unicast at present It delivers newspaper text, i.e., message is copied in each session of terminal, be sent to terminal as unicast message.

Main problem existing for the above method is: the deployed position of above-mentioned user's veil member may be higher, i.e. user's veil Network level between member and terminal is more, and the terminal converged at user's veil member is more, so that user's veil member passes through unicast Mode when sending message, the amount for the message that user's veil member needs to replicate is larger, heavier loads, and then user's veil member Processing capacity is referred to as the load bottleneck of whole network, and will increase the bandwidth consumption of network.

Summary of the invention

The application provides a kind of sending method of multicast message, apparatus and system, to realize network load balancing and Mitigate the bring bandwidth consumption of user's veil member copy packet.

In a first aspect, the application provides a kind of sending method of multicast message.This method can be executed by user's veil member, example Such as executed by first user's veil member.This method comprises: firstly, first user's veil member receives multicast message；Then, it first uses Family veil member sends the multicast message to communication network element by the first single tunnel.Wherein, which is the first use The tunnel for being used to send multicast message between family veil member and communication network element.

The above method, first user's veil member after receiving multicast message, can by first user's veil member with it is logical Believe that the first single tunnel between network element sends multicast message, thus, even if first user's veil member cannot currently pass through multicast The mode in tunnel sends multicast message, and the first single tunnel also can be used by multicast message and be sent to communication network element, then by Communication network element selection continues multicast message being sent to terminal using the mode of multicast or unicast.The method achieve when the first use When family veil member cannot use the mode of Multicast Tunnel to send multicast message, pass through unicast respectively without using by multicast message Mode is sent to each session of terminal, and only needs for multicast message to be sent to communication network element, is continued with by communication network element. To, this method is conducive to the load bottleneck for avoiding the processing capacity of first user's veil member from becoming whole network, so as to Realize the load balancing of network；Simultaneously as first user's veil member does not need copy packet to each session, to be conducive to Mitigate the bandwidth consumption of copy packet bring.

Optionally, above-mentioned communication network element can be user's veil member (such as being known as second user veil member), or may be used also To be accessing gateway equipment, or it can also be radio reception device.

Wherein, when above-mentioned communication network element is second user veil member, if group can be used in the second user veil member The mode for broadcasting tunnel sends multicast message, then when the second user veil member receives the group casting of first user's veil member transmission Wen Hou, can choose by Multicast Tunnel send multicast message, alternatively, it is also an option that using unicast mode, by group casting Text copies in the session for the terminal for being registered in second user veil member, the mode of unicast is then used respectively, by multicast message It is sent respectively to terminal.

Here, if second user veil member sends multicast message by the way of Multicast Tunnel, have beneficial below Effect: since first user's veil member cannot send multicast message by way of Multicast Tunnel, but multicast message can be led to It crosses the first single tunnel and is sent to second user veil member, and second user veil member can be sent by way of Multicast Tunnel Multicast message, so that can be sent to multicast message can use multicast when there was only subnetwork support group sowing time in network Mode sends user's veil member of message, realizes and makes full use of the user's veil member that can send message using multicast mode Function helps to improve the performance of whole network.

Here, if the multicast message that second user veil member is transmitted and received by the way of unicast, have following The utility model has the advantages that due to the level between second user veil member and terminal, compared between first user's veil member and terminal Level is less, thus, second user veil member need the multicast message that replicates compared to first user's veil member will less, because And even if the multicast message that second user veil member is transmitted and received by the way of unicast, then the bandwidth resources occupied also phase To less, so that the load balancing of network also may be implemented and mitigate the bring bandwidth consumption of copy packet.

, can be by the way of unicast when above-mentioned communication network element is accessing gateway equipment, the multicast message that will receive It copies in each session of terminal and is sent to terminal.It, can be with alternatively, when accessing gateway equipment itself supports multicast-capable It directlys adopt multicast mode and the multicast message received is sent to terminal, so as to make full use of accessing gateway equipment to have Multicast-capable, be conducive to improve whole network performance.

When above-mentioned communication network element is radio reception device, can be using broadcasting by the way of, the multicast message that will receive It is broadcast to terminal.Alternatively, multicast mode, which can be directly used, to be received when radio reception device itself supports multicast-capable Multicast message be sent to terminal, so as to the multicast-capable for making full use of radio reception device to have, be conducive to improve whole The performance of a network.

In one possible implementation, single when needing to create first between first user's veil member and communication network element When broadcasting tunnel, first user's veil member can receive the letter of multicast group information and the first single tunnel from session management network element Breath, the multicast group information are used to indicate the multicast message sent in the first single tunnel.Wherein, the packet of the first single tunnel Include the identification information of the first single tunnel；Alternatively, the information of the first single tunnel can also include the address information of communication network element With the identification information of the first single tunnel.

In above-mentioned implementation, when communication network element does not have multicast source, if session management network element is first by first user's veil It is determined as the multicast source of communication network element, then the information of multicast group information and the first single tunnel is sent to by session management network element One user's veil member, thus, the first subsequent multicast message that can identify multicast group information of user's veil member passes through first list It broadcasts tunnel and is sent to communication network element.That is, the first user veil member can be used as the multicast source of communication network element, Xiang Tongxin network element hair Send multicast message.

In one possible implementation, if first user's veil member does not have multicast source, first user's veil member can To receive the instruction information from session management network element, which is used to indicate the request of first user's veil member and multicast is added The corresponding multicast group of group information.Optionally, which may include that multicast joins message, which joins message including upper Multicast group information is stated, which joins message for requesting that the corresponding multicast group of above-mentioned multicast group information is added.To which first uses Family veil member can be joined message by the multicast received, and the corresponding multicast group of above-mentioned multicast group information is added in request, such as It can be and join message to multicast platform transmission multicast, the corresponding multicast of above-mentioned multicast group information in multicast platform is added in request Group.

In alternatively possible implementation, if first user's veil member determines the corresponding multicast of no multicast group information Source then sends reporting message to session management network element, which includes multicast group information, and reporting message is used to notify, the One user's veil member lacks multicast source.That is, being from user's veil member actively to session management reported by network elements in this implementation There is no multicast source, thus, subsequent session managed network element can indicate that first user's veil member joins message by sending multicast, ask It asks and the corresponding multicast group of multicast group information is added.

In any of the above-described implementation, the first received multicast message of user's veil member is including but not limited to following several Kind implementation:

Mode one, first user's veil member receive the multicast message from multicast platform.

Mode two, first user's veil member receive the group casting from third user veil member by the second single tunnel Text, wherein the second single tunnel is between third user veil member and first user's veil member for sending multicast message Tunnel.

Mode three, first user's veil member receive the multicast message from third party device by third single tunnel, In, third single tunnel is between third party device and first user's veil member for sending the tunnel of multicast message.

Mode four, first user's veil member receive the multicast message from fourth user veil member by Multicast Tunnel.

It should be noted that in any of the above-described embodiment, in one implementation, between the first UPF and communication network element There are one or more first single tunnels, each first single tunnel corresponds to a kind of multicast group information, thus, different multicast groups The corresponding multicast message of information will be sent to communication network element using the first different single tunnels respectively.

In another implementation, it can also be and only establish one article of first unicast between the first UPF and communication network element Tunnel, first single tunnel can be used for sending the corresponding different multicast messages of different multicast group informations, i.e., the first UPF will not The corresponding different multicast messages of same multicast group information, are sent to communication network element by same first single tunnel.

Second aspect, the application provide a kind of sending method of multicast message.This method can be executed by communication network element, communication Network element can be user's veil member, such as referred to as second user veil member, can also be accessing gateway equipment, can also be wireless Access device.This method comprises: firstly, communication network element receives the group casting from first user's veil member by single tunnel Text, the single tunnel are between first user's veil member and the communication network element for sending the tunnel of multicast message.Then, Communication network element sends the multicast message.

The above method, communication network element can be connect by the first single tunnel between first user's veil member and communication network element Multicast message is received, thus, it, can also even if first user's veil member cannot currently send multicast message by way of Multicast Tunnel To use the first single tunnel that multicast message is sent to communication network element, then communication network element selection uses multicast or the side of unicast Formula continues multicast message being sent to terminal.The method achieve the modes that Multicast Tunnel cannot be used when first user's veil member When sending multicast message, without each session for being sent to terminal using multicast message to be passed through to mode of unicast respectively, and only It needs multicast message being sent to communication network element, be continued with by communication network element.To which this method is conducive to avoid the first user The processing capacity of veil member becomes the load bottleneck of whole network, so as to realize the load balancing of network；Simultaneously as the One user's veil member does not need copy packet to each session, to be conducive to mitigate the bandwidth consumption of copy packet bring.

In one possible implementation, when needing to create the unicast tunnel between the first user veil member and communication network element When road, communication network element can receive the instruction information from session management network element, which is used to indicate the above-mentioned list of creation Broadcast tunnel.

For example, the instruction information further includes single tunnel if generating the information of single tunnel by session management network element Information.Wherein, the information of single tunnel includes the identification information of single tunnel, alternatively, the information of single tunnel includes unicast tunnel The identification information in road and the address information of communication network element.

For another example, if generating the information of single tunnel by communication network element, communication network element is also sent to session management network element The information of the above-mentioned single tunnel generated.

In one possible implementation, it if communication network element determines no multicast source, is sent to session management network element Reporting message, the reporting message include multicast group information, which is used to indicate the group sent in above-mentioned single tunnel Casting text, for the reporting message for notifying, communication network element lacks multicast source.

In alternatively possible implementation, if communication network element determines no multicast source, sent out to session management network element Reporting message is sent, which includes the information of the above-mentioned single tunnel of multicast group information and communication network element generation, the multicast Group information is used to indicate the multicast message sent in single tunnel, and for the reporting message for notifying, communication network element lacks multicast source. In the implementation, while reporting does not have multicast source, also the information for the single tunnel that communication network element generates is sent together Session management network element is given, establishes speed so as to reduce signaling overheads and promote single tunnel, and then be conducive to promote net Network performance.

The third aspect, the application provide a kind of sending method of multicast message.This method can be executed by session management network element, Such as the session management network element is properly termed as the first session management network element.This method comprises: firstly, the first session management network element obtains The information of multicast group information and single tunnel is taken, which is to send multicast to communication network element for first user's veil member The tunnel of message, the multicast group information are used to indicate the multicast message sent in single tunnel.Then, the first session management network element The information of multicast group information and single tunnel is sent to first user's veil member.Wherein, communication network element can be second user face Network element perhaps can also be accessing gateway equipment or can also be radio reception device.

The above method can be used for realizing the single tunnel established between first user's veil member and communication network element, i.e., by meeting The information of multicast group information and single tunnel is sent to first user's veil member by words managed network element, thus first user's veil member The information that receives is recorded, if subsequent when having the corresponding multicast message of the multicast group information to reach, can be sent out by the single tunnel Give communication network element.It realizes and multicast message is sent by single tunnel, thus when first user's veil member cannot pass through multicast When mode sends multicast message, multicast message can be sent to communication network element by single tunnel, by communication network element by group broadcast Text is then forwarded to terminal, sends multicast message using mode of unicast to help avoid first user's veil member, can reduce the One user's veil member copy packet bring bandwidth consumption.Meanwhile multicast message is sent into multiple communication network elements, by multiple communications Network element respectively by multicast message multicast or unicast to terminal, it can be achieved that load balancing.

In one possible implementation, the first session management network element can be one of in the following manner or a variety of To obtain the information of multicast group information and single tunnel:

Mode one, the first session management network element obtain the letter of multicast group information and single tunnel from the second session management network element Breath.

Further, the second session management network element can be from communication network element while get multicast group information and unicast tunnel The information in road, alternatively, being also possible to from the local information for obtaining single tunnel, and multicast group information derives from communication network element, i.e., Multicast group information is got from logical network element.

Mode two, the first session management network element obtain the information of multicast group information and single tunnel from communication network element.

Mode three, the first session management network element is from the local information for obtaining single tunnel, and multicast group information is from logical Believe network element.

In one possible implementation, the first session management network element receives on first from first user's veil member Message is reported, the first reporting message includes multicast group information, and for the first reporting message for notifying, first user's veil member lacks multicast Source.Then, the first session management network element sends the first instruction information to first user's veil member, and the first instruction information is used to indicate The corresponding multicast group of multicast group information is added in the request of first user's veil member.Optionally, the first instruction information includes that multicast is added Message, multicast join message including multicast group information, and multicast joins message for requesting the addition multicast group information corresponding Multicast group.

In one possible implementation, what the first session management network element received from communication network element second reports and disappears Breath, the second reporting message include multicast group information, and for the second reporting message for notifying, communication network element lacks multicast source.Optionally, Second reporting message further includes the information of single tunnel.

In one possible implementation, the first session management network element sends second indication information to communication network element, the Two instruction information are used to indicate creation single tunnel.Optionally, second indication information includes the information of single tunnel.Wherein, single The information for broadcasting tunnel includes the identification information of single tunnel, alternatively, the information of single tunnel includes the identification information of single tunnel With the address information of communication network element.

In one possible implementation, if generating the information of single tunnel, then the first session pipe by communication network element Reason network element also receives the information of the single tunnel from communication network element.

Fourth aspect, the application provide a kind of device, which can be user's veil member, are also possible to chip.The dress Set each embodiment for having the function of realizing above-mentioned first aspect.The function can also pass through hardware by hardware realization Execute corresponding software realization.The hardware or software include one or more modules corresponding with above-mentioned function.

5th aspect, the application provide a kind of device, comprising: processor and memory；The memory is calculated for storing Machine executes instruction, and when the apparatus is operative, which executes the computer executed instructions of memory storage, so that the dress Set the sending method for executing the multicast message as described in any in above-mentioned first aspect.It should be noted that the memory can be with It is integrated in processor, is also possible to independently of except processor.

In another implementation, the application also provides a kind of device, which includes processor, and the processor is used It is coupled in memory, and reads the instruction in memory and executed as described in any in above-mentioned first aspect according to described instruction Multicast message sending method.

6th aspect, the application provide a kind of device, which can be communication network element, be also possible to chip, wherein logical Letter network element specifically can be accessing gateway equipment radio reception device or user's veil member.The device has real The function of each embodiment of existing above-mentioned second aspect.The function can also be executed corresponding by hardware realization by hardware Software realization.The hardware or software include one or more modules corresponding with above-mentioned function.

7th aspect, the application provide a kind of device, comprising: processor and memory；The memory is calculated for storing Machine executes instruction, and when the apparatus is operative, which executes the computer executed instructions of memory storage, so that the dress Set the sending method for executing the multicast message as described in any in above-mentioned second aspect.It should be noted that the memory can be with It is integrated in processor, is also possible to independently of except processor.

In another implementation, the application also provides a kind of device, which includes processor, and the processor is used It is coupled in memory, and reads the instruction in memory and executed as described in any in above-mentioned second aspect according to described instruction Multicast message sending method.

Eighth aspect, the application provide a kind of device, which can be session management equipment, are also possible to chip.It should Device has the function of realizing each embodiment of the above-mentioned third aspect.The function can be by hardware realization, can also be by hard Part executes corresponding software realization.The hardware or software include one or more modules corresponding with above-mentioned function.

9th aspect, the application provide a kind of device, comprising: processor and memory；The memory is calculated for storing Machine executes instruction, and when the apparatus is operative, which executes the computer executed instructions of memory storage, so that the dress Set the sending method for executing the multicast message as described in any in the above-mentioned third aspect.It should be noted that the memory can be with It is integrated in processor, is also possible to independently of except processor.

In another implementation, the application also provides a kind of device, which includes processor, and the processor is used It is coupled in memory, and reads the instruction in memory and executed as described in any in the above-mentioned third aspect according to described instruction Multicast message sending method.

Tenth aspect, the application provide a kind of system, the device and the 4th including above-mentioned eighth aspect or the 9th aspect Or the device in terms of the 5th.

Tenth on the one hand, and the application also provides a kind of computer readable storage medium, the computer readable storage medium In be stored with instruction, when run on a computer, so that computer executes method described in above-mentioned various aspects.

12nd aspect, the application also provides a kind of computer program product comprising instruction, when it is transported on computers When row, so that computer executes method described in above-mentioned various aspects.

13rd aspect, the application also provide a kind of chip system, which includes processor, for supporting user Veil member realizes the sending method of multicast message described in any one of above-mentioned first aspect or first aspect.In a kind of possibility Design in, which further includes memory.The memory, for saving the necessary program instruction sum number of user's veil member According to.The chip system, can be made of chip, also may include chip and other discrete devices, the embodiment of the present application to this not Make specific limit.

Fourteenth aspect, the application also provide a kind of chip system, which includes processor, for supporting communication Network element realizes the sending method of multicast message described in any one of above-mentioned second aspect or second aspect.A kind of possible In design, which further includes memory.The memory, for saving the necessary program instruction of communication network element and data. The chip system, can be made of chip, also may include chip and other discrete devices, and the embodiment of the present application does not make this to have Body limits.

15th aspect, the application also provide a kind of chip system, which includes processor, for supporting session Managed network element realizes the sending method of multicast message described in any one of the above-mentioned third aspect or third aspect.One kind can In the design of energy, which further includes memory.The memory, for saving the necessary program instruction of session management network element And data.The chip system, can be made of chip, also may include chip and other discrete devices, the embodiment of the present application pair This is not especially limited.

In addition, fourth aspect technical effect brought by any design method into the 15th aspect can be found in first party Face technical effect brought by different implementations into the third aspect, details are not described herein again.

These aspects or other aspects of the application can more straightforward in the following description.

Detailed description of the invention

Fig. 1 is a kind of possible network architecture schematic diagram provided by the present application；

A kind of network architecture schematic diagram that Fig. 2 is applicable in by the application；

Fig. 3 is a kind of sending method schematic diagram of multicast message provided by the embodiments of the present application；

Fig. 4 (a) is the sending method schematic diagram of another multicast message provided by the embodiments of the present application；

Fig. 4 (b) is the sending method schematic diagram of another multicast message provided by the embodiments of the present application；

Fig. 4 (c) is the sending method schematic diagram of another multicast message provided by the embodiments of the present application；

Fig. 4 (d) is the sending method schematic diagram of another multicast message provided by the embodiments of the present application；

Fig. 5 is a kind of schematic device provided by the present application；

Fig. 6 is another schematic device provided by the present application；

Fig. 7 is another schematic device provided by the present application；

Fig. 8 is another schematic device provided by the present application.

Specific embodiment

In order to keep the purposes, technical schemes and advantages of the application clearer, below in conjunction with attached drawing to the application make into One step it is described in detail.Concrete operation method in embodiment of the method also can be applied to Installation practice or system embodiment In.Wherein, in the description of the present application, unless otherwise indicated, the meaning of " plurality " is two or more.

The network architecture and business scenario of the embodiment of the present application description are to more clearly illustrate that the application is implemented The technical solution of example, does not constitute the restriction for technical solution provided by the embodiments of the present application, those of ordinary skill in the art It is found that technical solution provided by the embodiments of the present application is for similar with the differentiation of the network architecture and the appearance of new business scene The technical issues of, it is equally applicable.

As shown in Figure 1, a kind of possible network architecture schematic diagram being applicable in for the application.The network architecture includes following system System: the system being made of user's veil member and communication network element, the system being made of user's veil member and session management network element, and The system being made of session management network element, user's veil member and communication network element.

It should be noted that be different from other user's veils of the subsequent appearance of the embodiment of the present application member, such as second user Veil member, third user veil member, fourth user veil member etc., therefore user's veil member in system architecture shown in FIG. 1 It is properly termed as first user's veil member.Here it is described collectively, it is subsequent to repeat no more.

Wherein, session management network element, the session management being mainly used in mobile network, such as session establishment, modification, release. Concrete function for example user distributes the address Internet protocol (internet protocol, IP), selection provides message forwarding capability User plane functions network element etc..In 5G, session management network element can be conversation management functional (session management Function, SMF) network element, certainly, and in future communications, such as the 6th generation network (6th generation, 6G), session management net Member still can be SMF network element, or have other titles, and the application is without limitation.

User's veil member, is mainly responsible for and handles user's message, such as forwarding, charging.In 5G, network slice choosing Selecting network element can be user plane functions (user plane function, UPF) network element, certainly, in future communications, in 6G, User's veil member still can be UPF network element, or have other titles, and the application is without limitation.

Communication network element is a general name, and in a particular embodiment, communication network element can be user's veil member, and the application is implemented Example is subsequent to be known as second user veil member.The function of the second user veil member can refer to aforementioned retouch with above-mentioned user's veil member It states, which is not described herein again.

Communication network element is also possible to accessing gateway equipment.Accessing gateway equipment is that fixed network is linked into core in fixed network The access point of heart net, accessing gateway equipment can pass through the network element of N2 interface and core network control surface, such as mobile management network element (such as access and mobile management function to ps domain (access and mobility management function, AMF) network element) is logical Letter.As a kind of specific implementation, accessing gateway equipment, such as it can be the access gateway function in fixed network (access gateway function, AGF) network element.

Communication network element can also be radio reception device.Radio reception device is a kind of terminal to be linked into wireless network Equipment, in 5G, radio reception device is referred to as wireless access network (radio access network, RAN) equipment. Radio reception device includes but is not limited to: base station (g nodeB, gNB), evolved node B in 5G (evolved node B, ENB), radio network controller (radio network controller, RNC), node B (node B, NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), family's base It stands (for example, home evolved nodeB or home node B, HNB), Base Band Unit (BaseBand Unit, BBU), pass Defeated point (transmitting and receiving point, TRP), is moved launch point (transmitting point, TP) Dynamic switching centre etc., in addition, it can include Wireless Fidelity (wireless fidelity, wifi) access point (access Point, AP) etc..

Each system mentioned above is illustrated respectively below.To distinguish other user's veils with subsequent descriptions Member, subsequent user's veil member by Fig. 1 indicate that user's veil that is, shown in FIG. 1 is first, at this using first user's veil member It is referred to as first user's veil member in application embodiment, is described collectively here.

For the system being made of first user's veil member and communication network element.Between first user's veil member and communication network element Establish the first single tunnel for sending multicast message.

First user's veil member, for receiving multicast message；And it is sent and is somebody's turn to do to communication network element by the first single tunnel Multicast message；

Communication network element for receiving the multicast message of first user's veil member transmission, and sends the multicast message received.

Wherein, communication network element can be second user veil member, can be accessing gateway equipment, can also be wireless access Equipment.

For the system being made of first user's veil member and session management network element.It can be used for establishing above-mentioned first unicast tunnel Road, and multicast source is determined for first user's veil member.

Wherein, session management network element, for obtaining the information of multicast group information and the first single tunnel, and to the first user Veil member sends the information of the multicast group information and first single tunnel, and it is single that the multicast group information is used to indicate first Broadcast the multicast message in tunnel；

First user's veil member, for receiving the letter of multicast group information and the first single tunnel from session management network element Breath.

To have recorded the information and multicast group information of the first single tunnel in first user's veil member, and establish two Association between person realizes the first single tunnel established between first user's veil member and communication network element.

Further, session management network element is also used to receive the first reporting message from first user's veil member, this One reporting message includes multicast group information, and for the first reporting message for notifying, first user's veil member lacks multicast source；And It is also used to send the first instruction information to first user's veil member, the first instruction information is used to indicate first user's veil member The corresponding multicast group of multicast group information is added in request；

First user's veil member is also used to receive the first instruction information from session management network element.

To indicate that first user's veil member is requested by above-mentioned first reporting message and above-mentioned first instruction information Multicast group is added, generates multicast source for first user's veil member.

For the system being made of first user's veil member, communication network element and session management network element.It can be achieved above-mentioned by The function for the system that one user's veil member and communication network element are constituted, and realize by first user's veil member and session management network element The function of the system of composition further comprises on the basis of the function that aforementioned system has:

As a kind of implementation, session management network element receives the second reporting message from communication network element, and described second Reporting message includes multicast group information, and for second reporting message for notifying, the communication network element lacks multicast source.

Wherein, the second reporting message further can also include the information for the single tunnel that communication network element generates.

Further, session management network element sends second indication information, the second indication information to the communication network element It is used to indicate the creation single tunnel.

Optionally, the first user veil member shown in FIG. 1 or communication network element or session management network element can be one respectively Individual network element is also possible to be realized jointly by multiple network elements, can also be used as a functional module in a network element, this Shen Please embodiment this is not especially limited.

It is understood that above-mentioned function is either network element in hardware device, is also possible in specialized hardware The virtualization instantiated in upper runs software function or platform (for example, cloud platform).

For convenience of description, the application it is subsequent with session management network element be SMF network element, user's veil member be UPF network element, wirelessly Access device be RAN equipment, accessing gateway equipment be AGF network element for be illustrated.Also, for convenience of description, further, By SMF network element, UPF network element, AGF network element, it is briefly referred to as SMF, UPF, AGF.

As shown in Fig. 2, a kind of network architecture schematic diagram being applicable in by the application.The network architecture is net shown in FIG. 1 A kind of concrete application scene of network framework.

Wherein, the first UPF in Fig. 2 is user's veil member in Fig. 1.

Communication network element (can be the 2nd UPF, RAN equipment or AGF) in Fig. 2 is the communication network element in Fig. 1.Also, the One UPF sends multicast message by the first single tunnel between the first UPF and communication network element.

When the first UPF and the 2nd UPF are managed by the first SMF and the 2nd SMF respectively, then the first SMF in Fig. 2 is to scheme Session management network element in 1.

When the first UPF and the 2nd UPF are managed by the same SMF, as shown in Fig. 2, the first UPF and the 2nd UPF are by Fig. 2 In SMF management, then the SMF in Fig. 2 is the session management network element in Fig. 1, at this point, not having the first SMF and second in Fig. 2 SMF, it is only necessary to retain SMF.Or be interpreted as, the first SMF of the first UPF is managed, the 2nd SMF with the 2nd UPF of management, is same SMF in one SMF, as Fig. 2.

Below with reference to Fig. 2, explanation is introduced to the sending method of multicast message provided by the present application.Shown in Fig. 2 One UPF can not achieve and the multicast message received is sent to communication network element by way of Multicast Tunnel, thus, the application In embodiment, the first single tunnel is established between the first UPF and communication network element, then passes through the first of foundation by the first UPF The multicast message received is sent to communication network element, and the multicast that will further be received by communication network element by single tunnel Message is sent to terminal, which can be the mobile terminal in mobile network, the fixed network terminal being also possible in fixed network. Alternatively, when communication network element be two UPF when, then the 2nd UPF the multicast message received can be sent to RAN equipment or Then multicast message is further sent to terminal by RAN equipment or AGF by AGF.

As shown in figure 3, being the sending method of multicast message provided by the embodiments of the present application, comprising the following steps:

Step 301, the first UPF receives multicast message.

Step 302, the first UPF sends multicast message to communication network element.

Wherein, the first UPF is to be sent by the first single tunnel between the first UPF and communication network element to communication network element Multicast message.

Step 303, communication network element sends multicast message.

The above method, after the first UPF receives multicast message, if the first UPF does not have multicast-capable or first UPF has multicast-capable but currently the network between communication network element does not support multicast transmission, thus, the first UPF can not pass through Method of multicasting is sent to communication network element by the mode of multicast.Under the scene, if according to the solution of background technique, the One UPF directlys adopt the mode of unicast, and multicast message is copied to each session (such as protocol Data Unit of terminal respectively (protocol data unit, PDU) session) on, the multicast message, the party are then sent to terminal unicast by each session Formula is very high to the performance requirement of the first UPF due to needing the first UPF to copy to multicast message in each session, thus First UPF is easy to the performance bottleneck of referred to as whole network.

The above method provided by the present application, when the first UPF cannot send multicast message by method of multicasting, the first UPF Can by the first single tunnel between the first UPF and communication network element (first single tunnel, which can be, currently to be established, Had built up before can be), multicast message is sent to communication network element, then by communication network element selection use multicast or The mode of unicast continues multicast message being sent to terminal.To which this method is conducive to that the processing capacity of the first UPF is avoided to become The load bottleneck of whole network, so as to realize the load balancing of network；Simultaneously as the first UPF does not need copy packet To each session, to be conducive to mitigate the bandwidth consumption of copy packet bring.

With reference to the accompanying drawing 2, the sending method of multicast message shown in Fig. 3 is described further.

In above-mentioned steps 301, the first UPF receive multicast message, for example including but be not limited to following methods:

Method one, the first UPF receive the multicast message from multicast platform.

That is, the first UPF can be used as anchor point (anchor) UPF, multicast message is received from multicast platform, at this time multicast platform It is then the multicast source of the first UPF.

Wherein, multicast platform refers to the multicast source of the multicast message of user.Multicast platform can be used for sending original group The source that casting text, i.e. multicast platform can be used as multicast message.

Method two, the first UPF receive the multicast message from the 3rd UPF by the second single tunnel.

Wherein, the tunnel that is used to send multicast message of second single tunnel between the 3rd UPF and the first UPF.

At this point, the 3rd UPF is then the multicast source of the first UPF.

That is, multicast message is sent to first after receiving multicast message, through the second single tunnel by the 3rd UPF UPF.Here, the 3rd UPF sends the mode of multicast message to the first UPF, sends multicast message to communication network element with the first UPF Mode is identical, i.e. the 3rd UPF possibly can not send multicast message to the first UPF by way of multicast message, thus in third The second single tunnel is established between UPF and the first UPF, and multicast message is then sent by the second single tunnel by the 3rd UPF.

Method three, the first UPF receive the multicast message from third party device by third single tunnel.

Wherein, the tunnel that is used to send multicast message of the third single tunnel between third party device and the first UPF.

At this point, third party device is then the multicast source of the first UPF.

That is, multicast message is sent to after receiving multicast message, through third single tunnel by third party device One UPF.Here, third party device sends the mode of multicast message to the first UPF, sends multicast to communication network element with the first UPF The mode of message is identical, i.e., third party device possibly can not send multicast message to the first UPF by way of multicast message, Third single tunnel is thus established between third party device and the first UPF, and third unicast tunnel is then passed through by third party device Road sends multicast message.

In the embodiment of the present application, third party device, such as can be the equipment etc. including message copy function.

Method four, the first UPF receive the multicast message from the 4th UPF by Multicast Tunnel.

At this point, the 4th UPF is then the multicast source of the first UPF.

Due to there is Multicast Tunnel between the 4th UPF and the first UPF, and the 4th UPF can send multicast by Multicast Tunnel Message, then in this method, the 4th UPF can directly pass through Multicast Tunnel, in a manner of multicast, broadcast to the first UPF transmission group Text.

In the embodiment of the present application, the first UPF by above-mentioned four kinds but can be not limited to above-mentioned four kinds of modes, receive multicast Message, and the multicast message that will be received are sent to communication network element by the first single tunnel.

It is respectively the 2nd UPF, RAN equipment or the different situations of AGF below for communication network element, is introduced respectively It is bright.

Situation one, communication network element are the 2nd UPF

As a kind of implementation, pass through the multicast message that the first single tunnel is sent when the 2nd UPF receives the first UPF Afterwards, multicast message can be copied in the session for the terminal that multicast group is added, then the 2nd UPF is divided by way of unicast It is not sent to the corresponding terminal of each session.

Here, if the multicast message that the 2nd UPF is transmitted and received by the way of unicast, have below beneficial to effect Fruit: it is less compared to the level between the first UPF and terminal due to the level between the 2nd UPF and terminal, thus, the 2nd UPF The multicast message for needing to replicate will less, thus, even if the 2nd UPF is by the way of unicast compared to first user's veil member The multicast message transmitted and received, then the bandwidth resources occupied are also relatively less, so that the load balancing of network also may be implemented With the bring bandwidth consumption for mitigating copy packet.

As another implementation, when the 2nd UPF receives the group casting that the first UPF is sent by the first single tunnel Wen Hou, multicast message can be encapsulated in Multicast Tunnel, be sent in a manner of multicast other UPF, radio reception device or Person's accessing gateway equipment etc..

Here, if the 2nd UPF sends multicast message by the way of Multicast Tunnel, have the advantages that by Multicast message cannot be sent by way of Multicast Tunnel in the first UPF, but multicast message can be passed through into the first single tunnel It is sent to the 2nd UPF, and the 2nd UPF can send multicast message by way of Multicast Tunnel.There was only portion in network to work as Multicast message can be sent to user's veil member that message can be sent using multicast mode, i.e., by subnetwork support group sowing time 2nd UPF is realized the function of making full use of the user's veil member for being sent message using multicast mode, helped to improve whole The performance of a network.

Situation two, communication network element are RAN equipment

It, can be using broadcast after RAN equipment receives the multicast message that the first UPF is sent by the first single tunnel The multicast message received is broadcast to terminal by mode.Alternatively, can directly be adopted when RAN equipment itself supports multicast-capable The multicast message received is sent to terminal with multicast mode, so as to the multicast for making full use of accessing gateway equipment to have Ability is conducive to the performance for improving whole network.

Situation three, communication network element AGF

When above-mentioned communication network element is AGF, the multicast message received can be copied into terminal by the way of unicast Each session on and be sent to terminal.Alternatively, multicast mode can be directly used will when AGF itself supports multicast-capable The multicast message received is sent to terminal, so as to the multicast-capable for making full use of AGF to have, is conducive to improve entire net The performance of network.

In addition, it is necessary to explanation, with reference to Fig. 2, the 2nd UPF can not only be connect by the first single tunnel from the first UPF Multicast message is received, is also possible to receive multicast message by the Multicast Tunnel between other UPF.

With reference to the accompanying drawing, explanation is introduced to the method for building up of the first single tunnel in above-described embodiment.Wherein, In the embodiment of the present application, two kinds of scenes can be divided into.In the first scene, the first UPF and the 2nd UPF are managed by different SMF respectively Reason, such as managed with reference to Fig. 2, the first UPF by the first SMF, the 2nd UPF is managed by the 2nd SMF.In second of scene, the first UPF It is managed with the 2nd UPF by same SMF, such as is managed with reference to Fig. 2, the first UPF and the 2nd UPF by the SMF in Fig. 2, that is, do not had The first SMF and the 2nd SMF in Fig. 2.

Below by taking the first UPF and the 2nd UPF are managed by the first SMF and the 2nd SMF respectively as an example, in the embodiment of the present application The method for establishing the first single tunnel be illustrated.

It is the method for building up schematic diagram of single tunnel provided by the present application as shown in Fig. 4 (a).Wherein, communication network element Two UPF.Before executing method shown in Fig. 4 (a), terminal sends multicast during creating session (such as PDU session) Join message, multicast join message in include multicast group information, multicast joins message for requesting that multicast group is added, which adds Enter message via RAN equipment or AGF, is forwarded to the 2nd UPF.

In one implementation, the 2nd UPF, which joins message the multicast received, is sent to the 2nd SMF, and then second The multicast that SMF parsing receives joins message, and therefrom gets multicast group information, and, the 2nd SMF can also get end The session information (for example including session identification) at end.The multicast group information and session information that 2nd SMF will acquire are sent to Two UPF, then multicast replication list is added in session information by the 2nd UPF, and multicast group is wherein included at least in multicast replication list Being associated between information and session information.

Wherein, multicast group information may include multicast network agreement (internet protocol, IP), optionally, because Under the scene of special net igmpinternet (internet group management protocol version 3, IGMPv3), It further can also include multicast source IP in multicast information.

Multicast group information can be used for identifying multicast message, i.e., a kind of multicast group information can be used for identifying a kind of group of casting Text.It as shown in table 1, is a kind of example of multicast replication list.

Multicast group information	Session information
		Multicast group information 1	Session information 1
Multicast group information 3	Session information 2
		Multicast group information 2	Session information 3

1 multicast replication list of table

For example, (multicast group information 2, the session information 3) in table 1 is the information being newly added.It is subsequent if there is the multicast group When multicast message indicated by information 2 reaches two UPF, then the multicast message can be copied to session information 3 by the 2nd UPF In indicated session, it is then sent to terminal, i.e. multicast message can be sent to end by the way of unicast by the 2nd UPF End.

Certainly, in another implementation, can also be by the 2nd UPF directly from multicast join message in get group Group information and session information are broadcast, such as gets above-mentioned (multicast group information 2, session information 3), is then added to multicast replication column In table.That is it when the 2nd UPF has the ability for obtaining multicast group information and session information, then does not need to parse multicast by the 2nd SMF It joins message.

As another alternative implementation, if the 2nd UPF supports multicast mode to send message, the above process It can be replaced the creation process of Multicast Tunnel.For example, if Multicast Tunnel is the tunnel between the 2nd UPF and RAN equipment, in group After broadcasting tunnel creation completion, multicast replication list as shown in Table 2 can be obtained.

For example, as shown in table 2, tunnel of the newly created Multicast Tunnel between the 2nd UPF and RAN equipment 3, then by (group Group information 2 is broadcast, tunnel 3 forwards port 4) it is added in multicast replication list, wherein forwarding port 4 is to receive on the 2nd UPF The port that multicast from RAN equipment 3 joins message.

Multicast group information	Multicast Tunnel	Forward port list
			Multicast group information 1	Tunnel 1	Forward port 1, forwarding port 2
Multicast group information 3	Tunnel 2	Forward port 3
			Multicast group information 2	Tunnel 3	Forward port 4

2 multicast replication list of table

As another alternative implementation, if the 2nd UPF supports multicast mode to send message, the above process It can be replaced the creation process of Multicast Tunnel.For example, if Multicast Tunnel is the tunnel between the 2nd UPF and AGF, in multicast tunnel After road creation is completed, multicast replication list as shown in table 3 can be obtained.

For example, as shown in table 3, tunnel of the newly created Multicast Tunnel between the 2nd UPF and AGF3, then by (multicast group Information 2, tunnel 3 forward port 4) it is added in multicast replication list, wherein forwarding port 4 is to receive to come from the 2nd UPF The port that the multicast of AGF3 joins message.

3 multicast replication list of table

After completing the aforementioned steps, the embodiment of the present application method as shown in Fig. 4 (a) next can be executed, specifically The following steps are included:

Step 401, the 2nd SMF sends instruction information to the 2nd UPF, and correspondingly, the 2nd UPF receives what the 2nd SMF was sent Indicate information.Wherein, instruction information is used to indicate creation single tunnel.

It should be noted that the instruction information of the step 401, is referred to as second indication information, for being different from The the first instruction information mentioned in subsequent step.

As a kind of implementation, before above-mentioned steps 401, the 2nd UPF receive RAN equipment or AGF forwarding come After the multicast of self terminal joins message, the multicast source of multicast message indicated by multicast group information is further determined whether, If the 2nd UPF determines the multicast source of multicast message indicated by no multicast group information, alternatively, being interpreted as, the 2nd UPF determination does not have Have the corresponding multicast source of multicast group information, then the 2nd UPF to the 2nd SMF send reporting message (in the application, the reporting message Referred to as the second reporting message), reporting message includes multicast group information, and the reporting message is for notifying the 2nd SMF: described second UPF lacks multicast source.This method is determined that actively report to the 2nd SMF: the 2nd UPF does not have when not having multicast source by the 2nd UPF The corresponding multicast source of multicast group information.Further, after the 2nd SMF receives the reporting message, above-mentioned steps 401 are executed, Instruction information is sent to the 2nd UPF, the 2nd UPF of instruction creates single tunnel, which is also referred to as the first single tunnel, First single tunnel as shown in fig. 1 or fig. 2.

As another implementation, before above-mentioned steps 401, the 2nd UPF receive RAN equipment or AGF forwarding Come self terminal multicast join message after, multicast is joined message and is sent to the 2nd SMF, the 2nd UPF is determined by the 2nd SMF Whether the multicast source of multicast group information indicated by multicast message is had, if the 2nd SMF determines that the 2nd UPF does not have multicast group information institute The multicast source of the multicast message of instruction, alternatively, being interpreted as, the 2nd SMF determines that the 2nd UPF does not have the corresponding multicast of multicast group information Source, then the 2nd SMF further executes above-mentioned steps 401, i.e., sends instruction information, instruction the 2nd UPF creation to the 2nd UPF Single tunnel, the single tunnel are also referred to as the first single tunnel, the first single tunnel as shown in fig. 1 or fig. 2.

Optionally, it includes but is not limited to following several that the 2nd SMF, which determines whether the 2nd UPF has the method for multicast source:

Method one, the 2nd SMF are inquired locally.

Since the 2nd SMF has managed all multicast services on the 2nd UPF, the 2nd SMF can be in local search: the Whether two UPF have multicast source.If it is determined that then executing above-mentioned steps 401 without multicast source.

Method two, the 2nd SMF send query messages to the 2nd UPF, by the 2nd UPF returning response message

This method, the 2nd SMF send query messages to the 2nd UPF, and whether the 2nd UPF of request inquiry has multicast group information Corresponding multicast source, then the 2nd UPF sends the response message for being directed to the query messages to the 2nd SMF, includes in response message Query result, query result are to have a corresponding multicast source of multicast group information, or are the corresponding multicast source of no multicast group information. To which the 2nd SMF can determine whether the 2nd UPF has the corresponding multicast source of multicast group information, however, it is determined that there is no multicast source, then Execute above-mentioned steps 401.

Method three, the 2nd SMF are inquired to other network functions (network function, NF) network element.

For example, the 2nd SMF is to uniform data management (unified data management, UDM) network element or other use It is inquired in the network element of managing multicast business.Specific implementation step is identical with the above method two, and the object only inquired is more It is changed to UDM network element or other network elements for managing multicast business.

Through the above steps 401, the 2nd SMF send instruction information to the 2nd UPF, are used to indicate the 2nd UPF creation first Single tunnel.

Optionally, if it is the information for generating the first single tunnel by the 2nd SMF, then can also include in the instruction information The information of first single tunnel, wherein the information of the first single tunnel may include the first single tunnel identification information and The address information of 2nd UPF, alternatively, the information of the first single tunnel may include the identification information of first single tunnel, but It does not include the address information of the 2nd UPF.For example, can not also be sent out to the 2nd UPF when the 2nd only one address information of UPF Send the address information of the 2nd UPF.

Optionally, if it is the information for generating above-mentioned first single tunnel by the 2nd UPF, then after above-mentioned steps 401 also It include: the information that the 2nd UPF sends the first single tunnel generated to the 2nd SMF.Optionally, the 2nd UPF is sent out to the 2nd SMF The step of sending the information of the first single tunnel of generation can combine with following step 402, as a step.

It should be noted that in above-mentioned steps 401, when the 2nd SMF or the 2nd UPF determines that the 2nd UPF does not have multicast It is then that the 2nd UPF selects a multicast source (the first UPF i.e. in the application), and the 2nd SMF can be with by the 2nd SMF when source It determines that the multicast source currently selected cannot send multicast message by multicast mode, thus the step 401 can be executed, i.e., second SMF sends instruction information to the 2nd UPF, is used to indicate the first single tunnel of creation, which is then used to send group Casting text.

Step 402, the 2nd UPF sends response message to the 2nd SMF, and the 2nd SMF receives the response from the 2nd UPF and disappears Breath.

The step 402 is optional step.The response message is used for response: the 2nd UPF creates single tunnel success or failure.

Wherein, if executing the step 402, and when generating the information of the first single tunnel by the 2nd UPF, then the response message In can also include the first single tunnel information.

Alternatively, as another implementation, when generating the information of the first single tunnel by the 2nd UPF, the step 402 It can also directly replace are as follows: the 2nd UPF sends the information of the first single tunnel generated to the 2nd SMF.That is the 2nd UPF is not to Two SMF send response message, but only send the information of the first single tunnel of generation.

In another implementation, if before above-mentioned steps 401, determine that no multicast group information is signified by the 2nd UPF The multicast source of the multicast message shown, and (reporting message is also referred to as on second from the 2nd UPF to the 2nd SMF transmission reporting message Report message), then above-mentioned steps 401- step 402 can also be replaced from following steps: the 2nd UPF is reported to the 2nd SMF transmission to disappear It ceases (reporting message is also referred to as the second reporting message), includes the letter of multicast group information and the first single tunnel in the reporting message Breath, the reporting message is for notifying the 2nd SMF: the 2nd UPF lacks multicast source.This method, the 2nd UPF are to second SMF is reported while not having multicast source, and the information for the first single tunnel that will additionally generate is sent to the 2nd SMF together, so as to To reduce signaling overheads.

Step 403, the 2nd SMF sends the information of multicast group information and the first single tunnel to the first SMF, and the first SMF connects Receive the information of multicast group information and the first single tunnel from the 2nd SMF.

Optionally, the 2nd SMF selects a SMF first, such as the SMF selected is the first SMF, then sends out to the first SMF Send the information of multicast group information and the first single tunnel.As a kind of implementation, the 2nd SMF can send meeting to the first SMF Words create message, and the information of multicast group information and the first single tunnel is carried in the conversation establishing message.

As a kind of implementation, the 2nd SMF can select the first SMF according to configuration information, such as selection obtains First SMF is the anchor point device of multicast management.

Optionally, the 2nd SMF is while selection obtains a SMF, it is also an option that a UPF, and by the UPF of selection Information (such as the identification information of UPF, and/or, the address information of UPF) be sent to the first SMF of selection, such as selection obtains Be the first UPF.Wherein, the 2nd SMF selects the mode of UPF to may is that the 2nd SMF is selected according to principles such as topology, loads UPF, such as the first UPF that selects need and first UPF reachable to the 2nd UPF to have a multicast source, or selection obtain the One UPF has that multicast source is reachable, or obtained the first UPF of selection is multicast anchor point device and the first UPF is managed by the first SMF.

It is of course also possible to be the 2nd SMF after selection obtains the first SMF, a UPF is selected by the first SMF, such as select The UPF selected is the first UPF, and the first SMF selects the mode of UPF similar with the 2nd SMF selection aforesaid way of UPF, can join Examine foregoing description.

As another implementation, it can also be from the first SMF or the 2nd SMF to other equipment and send request message, Such as it is then inquired to obtain a UPF and be returned according to multicast group information by other equipment including multicast group information in request message Back to the first SMF or the 2nd SMF.Other equipment for example can be the equipment for managing multicast information and UPF information, this Shen Please this is not construed as limiting.

Wherein, it should be noted that the UPF that above-mentioned 2nd SMF or the first SMF is selected is as the 2nd UPF The UPF of multicast source, i.e., it is subsequent from the UPF of the selection to the 2nd UPF send multicast group information corresponding to multicast message.

Step 404, the first SMF sends the information of multicast group information and the first single tunnel to the first UPF, and the first UPF connects Receive the information of multicast group information and the first single tunnel from the first SMF.

As a kind of implementation, the first SMF can send conversation establishing request, conversation establishing request to the first UPF The middle information for carrying multicast group information and the first single tunnel.

After the first UPF receives the information of multicast group information and the first single tunnel, you can learn that: the subsequent multicast Multicast message indicated by group information will be sent to the 2nd UPF by first single tunnel.To through the above steps 401- step 404 and other correlation steps realize and select a multicast source (i.e. the first UPF) for the 2nd UPF, and also build The first single tunnel between the first UPF to the 2nd UPF is found, and by the first UPF record multicast group information and the first unicast tunnel Association between road sends multicast message corresponding to multicast group information by first single tunnel to realize.

As a kind of implementation, the first UPF can also safeguard a multicast replication list.As shown in table 4, multiple for multicast A kind of example of list processed.

Multicast group information	The information of first single tunnel
		Multicast group information 1	Single tunnel 1
Multicast group information 3	Single tunnel 2
		Multicast group information 2	Single tunnel 3

4 multicast replication list of table

For example, the identification information of multicast group information and the first single tunnel that the first UPF is received be (multicast group information 2, Single tunnel 3), then the information is added to multicast replication list by the first UPF.It is subsequent, when the first UPF receives multicast group information When multicast message corresponding to 2, then the multicast message is sent to second by the first single tunnel that single tunnel 3 is identified UPF。

Optionally, further comprising the steps of after the step 404 of the embodiment of the present application:

Step 405, the first SMF sends instruction information to the first UPF, and correspondingly, the first UPF receives what the first SMF was sent Indicate information.Wherein, instruction information is used to indicate creation single tunnel.

It should be noted that the instruction information of the step 405, is referred to as the first instruction information, for being different from The second indication information mentioned in abovementioned steps.

As a kind of implementation, before above-mentioned steps 405, further includes: the first UPF determines no multicast group information institute The multicast source of the multicast message of instruction, alternatively, being interpreted as, the first UPF determines the corresponding multicast source of no multicast group information, then One UPF sends reporting message (in the application, which is also referred to as the first reporting message) to the first SMF, reporting message packet Multicast group information is included, the reporting message is for notifying the first SMF: the first UPF lacks multicast source.This method, by the first UPF Determine that actively report to the first SMF: the first UPF does not have the corresponding multicast source of multicast group information when not having multicast source.Further Ground executes above-mentioned steps 405 after the first SMF receives the reporting message, i.e., sends instruction information (instruction to the first UPF Information is referred to as the first instruction information), it is used to indicate the first UPF request and the corresponding multicast group of multicast group information is added.

As another implementation, before above-mentioned steps 405, further includes: the first SMF determines the first UPF not group The multicast source of multicast message indicated by group information is broadcast, alternatively, being interpreted as, the first SMF determines that the first UPF does not have multicast group information Corresponding multicast source, then the 2nd SMF further executes above-mentioned steps 405, i.e., sends instruction information (instruction to the first UPF Information is referred to as the first instruction information), it is used to indicate the first UPF request and the corresponding multicast group of multicast group information is added.Its In, the first SMF determines whether the first UPF has the method for multicast source, determines whether the 2nd UPF has group with aforementioned 2nd SMF The method for broadcasting source is identical, can refer to foregoing description.

It optionally, further include that multicast joins message in the instruction information that above-mentioned first SMF is sent to the first UPF, multicast It joins message including multicast group information, multicast joins message for requesting that the corresponding multicast group of multicast group information is added.Either, If not including that the multicast joins message in the instruction information, above-mentioned multicast can be generated by the first UPF and joined message.Then, Multicast is sent by the first UPF to join message, the multicast group is added, for example, with reference to Fig. 2, if the first UPF is anchor point UPF, the One UPF can send multicast to multicast platform and join message, and then the first UPF is added in multicast platform by multicast platform In multicast group indicated by the multicast group information.That is, using multicast platform as the multicast source of the first UPF, it is subsequent, it is put down by multicast Platform is sent to the corresponding multicast message of multicast group information to the first UPF.

As a kind of implementation, if determining that the first UPF does not have multicast source by the first SMF, then above-mentioned steps 404 and step Rapid 405 can also merge into a step, i.e. the first SMF also sends multicast group while sending instruction information to the first UPF The information of information and the first single tunnel.

Step 406, the first UPF sends response message to the first SMF, and the first SMF receives the response from the first UPF and disappears Breath.

The step 406 is optional step.The response message is used for response: it is successfully or to lose that multicast group, which is added, in the first UPF It loses.

Above-described embodiment, with communication network element for the 2nd UPF, and the first UPF and the 2nd UPF are respectively by the first SMF and second It is illustrated for SMF management.It should be noted that if the first UPF and the 2nd UPF are managed by same SMF, such as by Fig. 2 In SMF management, then above-mentioned steps 403 can not need to execute.Also, the first SMF and the 2nd SMF in above-mentioned steps are replaced It is changed to SMF, i.e. the operation of the first SMF and the 2nd SMF is executed by same SMF.

Wherein, if the operation of the first SMF and the 2nd SMF is executed by same SMF, which can also be directly from second The information of UPF acquisition multicast group information and single tunnel.Either, which first gets the information of single tunnel from the 2nd UPF And it is stored in local, multicast group information then is got from the 2nd UPF, so that SMF can be first from local acquisition single tunnel Then information gets multicast group information from the 2nd UPF.

In other embodiments, if communication network element is RAN equipment or AGF, by the in embodiment shown in Fig. 4 (a) Two UPF replace with RAN equipment or AGF, also, the first SMF and the 2nd SMF are merged into a SMF, i.e. only one SMF, And the SMF manages the first UPF.Therefore, it is possible to determine whether RAN equipment or AGF have multicast source by the SMF, and do not have in determination Instruction information is sent to RAN equipment or AGF when multicast source；Or multicast source is determined whether by RAN equipment or AGF, and true Reporting message is sent to SMF when fixed no multicast source.

In one implementation, if determining whether multicast source by RAN equipment or AGF, then as RAN equipment or AGF Determine that, to SMF transmission reporting message (reporting message is also referred to as the second reporting message), which can when not having multicast source To include multicast group information, while further including the information of the first single tunnel, i.e., the first unicast tunnel is generated by RAN equipment or AGF The information in road.It certainly, does not include the first single tunnel in the reporting message if generating the information of the first single tunnel by SMF Information.

By the above method, it can be achieved that establishing the first single tunnel between the first UPF and communication network element, first unicast Tunnel sends the corresponding multicast message of multicast group information for the first UPF.In above-described embodiment, the first UPF and communication network element it Between, different multicast group informations, corresponding first single tunnel, that is, there is one or more between the first UPF and communication network element A first single tunnel, each first single tunnel correspond to a kind of multicast group information, thus, different multicast group informations is corresponding Multicast message will be sent to communication network element using the first different single tunnels respectively.

In practical applications, as another implementation, it can also be and only established between the first UPF and communication network element One the first single tunnel, first single tunnel can be used for sending the corresponding different multicast messages of different multicast group informations, That is the different corresponding different multicast messages of multicast group information are sent to by same first single tunnel by the first UPF Communication network element.Therefore, in this embodiment, if above-mentioned SMF (or the 2nd SMF) is determining that communication network element do not have a multicast source, and really When having been set up the first single tunnel between fixed first UPF and communication network element, then above-mentioned SMF (or the 2nd SMF) notifies second The multicast group information is added to the first single tunnel having built up by UPF.And above-mentioned SMF (or the first SMF) notifies The multicast group information is added to the first single tunnel having built up by one UPF.

Therefore, the present invention also provides a kind of sending methods of multicast message, comprising:

First user's veil member receives multicast message；

The first user veil member sends the multicast message to communication network element by first single tunnel, described First single tunnel is between the first user veil member and the communication network element for sending the tunnel of multicast message.

Wherein, first single tunnel can be used for sending the corresponding multicast message of different multicast group informations.

In practical applications, as another implementation, by any of the above-described embodiment, if communication network element is second UPF, then received in the 2nd UPF by the first single tunnel the first UPF transmission multicast message after or the 2nd UPF Otherwise, after receiving other UPF or the multicast message of multicast platform transmission such as Multicast Tunnel or multicast mode, then The multicast message received can also be sent to RAN equipment or the AGF: the two UPF from second in the following manner by the 2nd UPF The session (or session for user) of terminal is selected in the multicast replication list stored in UPF, wherein for identical mesh Address session, only a session is selected to send the multicast message, wherein destination address, such as can be tunnel destination IP Deng.Wherein, destination address can be the IP address of RAN equipment or the IP address of AGF.To which AGF or RAN equipment receives certain After message and decapsulation in a session, parsing is multicast message, then by the multicast message carry out broadcast or multicast or Unicast transmission is carried out after copying to the user conversation of AGF or RAN equipment record.

Second user veil member receives multicast message；

The session of the second user veil member selection user, and the session of the user by selection, described group is broadcasted Text is sent to RAN equipment or AGF；The destination address of the session of the user be the RAN equipment IP address or the AGF IP address.

Optionally, the session of second user veil member selection user, specifically includes: the second user veil member from In the session of all or part of user, the session of a user is randomly choosed, wherein the meeting of all or part of user The destination address of words is the IP address of the RAN equipment or the IP address of the AGF.

RAN equipment or AGF receive the multicast message that second user veil member is sent by the session of user；

The RAN equipment or the AGF obtain the multicast message from the session of the user；

The corresponding terminal of session that the multicast message is sent to the user by the RAN equipment or the AGF.

Optionally, the session corresponding end that the multicast message is sent to the user by the RAN equipment or the AGF End, specifically includes: the RAN equipment or the AGF are sent the multicast message by way of broadcast, unicast or multicast To the corresponding terminal of session of the user.

It should be noted that reporting message (including the first reporting message and second reporting message) in above-described embodiment, Notification message, response message etc. are only a names, and name does not constitute restriction to message itself.It is other in 5G network and future Network in, reporting message (including the first reporting message and second reporting message), notification message, response message are also possible to it His name, the embodiment of the present application are not especially limited this.

Therefore, the invention discloses a kind of sending methods of multicast message, comprising:

First user's veil member receives multicast message；

The first user veil member sends the multicast message to communication network element by the first single tunnel, and described first Single tunnel is between the first user veil member and the communication network element for sending the tunnel of multicast message.

In one possible implementation, the method also includes: the first user veil member, which receives, comes from session The information of the multicast group information of managed network element and first single tunnel, the multicast group information are used to indicate described group of casting Text.

In one possible implementation, the method also includes: the first user veil member is received from described The instruction information of session management network element, the instruction information are used to indicate the first user veil member request and the multicast are added The corresponding multicast group of group information.

Optionally, the instruction information includes that multicast joins message, and the multicast joins message to be believed including the multicast group Breath, the multicast join message for requesting that the corresponding multicast group of the multicast group information is added.

In one possible implementation, the method also includes: the first user veil member is determined without described The corresponding multicast source of multicast group information, and reporting message is sent to the session management network element, the reporting message includes described Multicast group information, for the reporting message for notifying, the first user veil member lacks multicast source.

In one possible implementation, the communication network element in the above method is second user veil member, or to connect Function Access Gateway equipment, or be radio reception device.

In one possible implementation, the first user veil member receives multicast message, comprising:

The first user veil member receives the multicast message from multicast platform；Alternatively,

The first user veil member receives the described group of casting from third user veil member by the second single tunnel Text, second single tunnel are between the third user veil member and the first user veil member for sending multicast The tunnel of message；Alternatively,

The first user veil member receives the multicast message from third party device, institute by third single tunnel Stating third single tunnel is between the third party device and the first user veil member for sending the tunnel of multicast message Road；Alternatively,

The first user veil member receives the multicast message from fourth user veil member by Multicast Tunnel.

In the sending method of above-mentioned multicast message, for example, the operation of first user's veil member can refer to first in Fig. 4 (a) The operation of UPF and above-mentioned related text explanation, which is not described herein again.

The invention also discloses a kind of sending methods of multicast message, comprising:

Communication network element receives the multicast message from first user's veil member by single tunnel, and the single tunnel is institute State the tunnel for being used to send multicast message between first user's veil member and the communication network element；

The communication network element sends the multicast message.

In one possible implementation, the method also includes: the communication network element, which receives, comes from session management net The instruction information of member, the instruction information are used to indicate the creation single tunnel.Optionally, the instruction information includes described The information of single tunnel.

In one possible implementation, the method also includes: the communication network elements to the session management network element Send the information of the single tunnel.

In one possible implementation, no multicast source is determined the method also includes: the communication network element, and to The session management network element sends reporting message, and the reporting message includes multicast group information, and the multicast group information is for referring to Show the multicast message, for the reporting message for notifying, the communication network element lacks multicast source.

In alternatively possible implementation, the method also includes: the communication network element determines no multicast source, and Reporting message is sent to the session management network element, the reporting message includes the letter of multicast group information and the single tunnel Breath, the multicast group information are used to indicate the multicast message, and for the reporting message for notifying, the communication network element lacks group Broadcast source.

In the sending method of above-mentioned multicast message, such as the behaviour of communication network element (can be the 2nd UPF, AGF or RAN equipment) It can refer to the operation of the 2nd UPF and above-mentioned related text explanation in Fig. 4 (a), which is not described herein again.

First session management network element obtains the information of multicast group information and single tunnel, and the single tunnel is for first User's veil member sends the tunnel of multicast message to communication network element, and the multicast group information is used to indicate the multicast message；

The first session management network element sends the multicast group information and the unicast to the first user veil member The information in tunnel.

In one possible implementation, the first session management network element obtains multicast group information and single tunnel Information, comprising:

The first session management network element obtains the multicast group information and the unicast tunnel from the second session management network element The information in road；Alternatively,

The first session management network element obtains the multicast group information and the single tunnel from the communication network element Information；Alternatively,

The first session management network element obtains the information of the single tunnel, and the multicast group information source from local In the communication network element.

In one possible implementation, the method also includes:

First reporting message of the first session management network element reception from the first user veil member, described first Reporting message includes the multicast group information, and for first reporting message for notifying, the first user veil member lacks group Broadcast source；

The first session management network element sends the first instruction information, first instruction to the first user veil member Information is used to indicate the first user veil member request and the corresponding multicast group of the multicast group information is added.

In one possible implementation, optionally, the first instruction information includes that multicast joins message, and described group It broadcasts and joins message including the multicast group information, the multicast joins message for requesting the addition multicast group information corresponding Multicast group.

In one possible implementation, the method also includes: the first session management network element is received from logical Believe the second reporting message of network element, second reporting message includes the multicast group information, and second reporting message is used for Notice, the communication network element lack multicast source.Optionally, second reporting message further includes the information of the single tunnel.

In one possible implementation, the method also includes: the first session management network elements to the communication Network element sends second indication information, and the second indication information is used to indicate the creation single tunnel.Optionally, described second Indicate information include the single tunnel information, the information of the single tunnel include the communication network element address information and The identification information of the single tunnel.

In one possible implementation, the method also includes: the first session management network element, which receives, comes from institute State the information of the single tunnel of communication network element, the information of the single tunnel include the communication network element address information and The identification information of the single tunnel.

In the sending method of above-mentioned multicast message, for example, the operation of the first session management network element can refer to SMF in Fig. 4 (a) The operation of (or the first SMF) and above-mentioned related text explanation, which is not described herein again.

It is above-mentioned that mainly scheme provided by the present application is described from the angle of interaction between each network element.It is understood that , in order to realize the above functions, it comprises execute the corresponding hardware configuration of each function and/or soft for above-mentioned each network element of realization Part module.Those skilled in the art should be readily appreciated that, described in conjunction with the examples disclosed in the embodiments of the present disclosure Unit and algorithm steps, the present invention can be realized with the combining form of hardware or hardware and computer software.Some function is studied carefully Unexpectedly it is executed in a manner of hardware or computer software driving hardware, the specific application and design constraint depending on technical solution Condition.Professional technician can use different methods to achieve the described function each specific application, but this Kind is realized and be should not be considered as beyond the scope of the present invention.

Below with reference to specific implementation, above-mentioned various schemes are illustrated respectively.

It is the sending method schematic diagram of another multicast message provided by the embodiments of the present application with reference to Fig. 4 (b).The implementation The scene of example are as follows: terminal sends multicast in the PDU session of creation and joins message, and multicast group is added in request, and multicast joins message The 2nd UPF is reached by RAN equipment or AGF, and is forwarded to the 2nd SMF of control plane by the 2nd UPF, the 2nd SMF issues duplication Multicast message to user's PDU session instruction to user face, later by user face complete multicast message forwarding.Wherein in user In the case that face does not have multicast source, report the information to control plane by user face.Specific steps are described below.

Step 1, terminal is created to the PDU session of the 2nd UPF.

Step 2, terminal obtains multicast list.

For example, terminal obtains multicast list from multicast platform, multicast list includes the information of one or more multicast groups, In, the information of each multicast group, such as may include multicast address, optionally, it can further include multicast source address.Example Such as, the Internet Group Management Protocol third edition (internet group management protocol version 3, It IGMPv3 then further include multicast source address in the case of).

Wherein, the information of multicast group can also be referred to as multicast group information.

Step 3, terminal sends multicast and joins message, and is forwarded to the 2nd UPF by RAN equipment or AGF.

Wherein, multicast, which joins message, is sent by PDU session, multicast join message in include multicast group information.Cause This, has incidence relation between multicast group information and PDU session.

Step 4, the 2nd UPF, which joins message multicast, is forwarded to the 2nd SMF.

For example, a kind of specific implementation as the step, can be the 2nd UPF and disappears to the 2nd SMF transmission N4 interface It ceases, includes that multicast joins message and PDU session information in the N4 interface message.

Step 5, the 2nd SMF sends the instruction of PDU session modification to the 2nd UPF.

PDU session modification instruction is used to indicate the PDU session created in modification above-mentioned steps 1.The PDU session modification refers to Enabling includes the information for the multicast group that user is added and user conversation identifies or session information.

It should be noted that the title of above-mentioned PDU session modification instruction does not limit, other titles can also be used in the future Instead of.

User conversation is added to multicast replication list by step 6a, the 2nd UPF.

Wherein, being associated between multicast group information and user conversation is had recorded in multicast replication list, will be used for subsequent The multicast message at family copies in the single tunnel of the session in list.

It should be noted that the session of user conversation or user, are referred to as the session of terminal session or terminal, this In application, it will be used alternatingly, actually have the same meaning.

1- step 6a through the above steps realizes at the 2nd UPF, user conversation is added to multicast replication list In, when receiving multicast message in order to subsequent 2nd UPF, corresponding session can be found by searching for multicast replication list, And multicast message is sent to by corresponding terminal by the single tunnel of the session.

As a kind of alternative scheme, if the 2nd UPF supports multicast mode, above-mentioned steps 1- step 6a that multicast can be used The foundation step in tunnel is replaced.Specific implementation details can refer to creation process of the prior art in relation to Multicast Tunnel, here no longer It repeats.

Step 6b, for the multicast group that user is added, the 2nd UPF has detected whether multicast source.

Wherein, if there is multicast source, which can send multicast message to the 2nd UPF by multicast mode, or Multicast message is sent by single tunnel mode.

When the 2nd UPF, which is detected, does not have multicast source, then further perform the step of.

Step 7, the 2nd UPF sends the response of PDU session modification to the 2nd SMF.

It include reporting message in the PDU session modification response, which includes multicast group information, which uses In notifying the 2nd SMF: the two UPF there is no the multicast source of the corresponding multicast message of multicast group information.

It should be noted that the reporting message, which is not limited to be carried in PDU session modification response, is sent to second SMF is also possible to be individually sent to the 2nd SMF.

Step 8, the 2nd SMF sends conversation establishing and instructs the 2nd UPF.

Conversation establishing instruction is used to indicate the single tunnel that creation receives multicast message.

Conversation establishing instruction includes multicast group information.

Optionally, tunnel information is distributed if it is by the 2nd SMF, then also comprising on the 2nd UPF in conversation establishing instruction Receive information (information of single tunnel here, the first unicast as described above of the single tunnel of multicast message The information in tunnel), the information of the single tunnel includes the identification information of the address information of the 2nd UPF and the tunnel of distribution.

Tunnel information is distributed if it is by the 2nd UPF, then does not include the letter of above-mentioned single tunnel in conversation establishing instruction Breath.

Step 9, the 2nd UPF sends conversation establishing response to the 2nd SMF.

Optionally, tunnel information is distributed if it is by the 2nd UPF, then the conversation establishing response further includes the letter of single tunnel Breath, the information of the single tunnel includes the identification information of the address information of the 2nd UPF and the tunnel of distribution.

It is managed since the 2nd UPF and the first UPF may be managed by identical SMF, or by different SMF.Therefore, it connects down To be divided to two kinds of situation explanations.

Situation one, the first SMF manage the first UPF, and the 2nd SMF manages the 2nd UPF, and the first SMF and the 2nd SMF is difference SMF.

It is further comprising the steps of then after above-mentioned steps 1- step 9:

Step 10, the 2nd SMF selects the first SMF, and sends conversation establishing message to the first SMF.

It include the information of multicast group information and the single tunnel of the 2nd UPF in the conversation establishing message.

For example, the 2nd SMF can be according to configuration information, selecting a SMF, the SMF of selection is, for example, the first SMF.As one Kind example, the first SMF can be the anchor point device of multicast management.

Then, a UPF is selected by the first SMF, the UPF of selection is, for example, the first UPF.As an example, the first SMF The first UPF can be selected to obtain according to principles such as topology, loads, such as the first UPF reachable to the 2nd UPF, and the first UPF has group Broadcast source or reachable with multicast source；Or the first UPF be multicast anchor point device and the first UPF is managed by the first SMF.

As another example, it can also be and a UPF is selected by the 2nd SMF, and by the UPF of selection (for example, first UPF information (such as address information, title)) is sent to the first SMF, such as is carried in above-mentioned conversation establishing message and sends To the first SMF.Wherein, the 2nd SMF selects the mode of UPF, can refer to the mode of aforementioned first SMF selection UPF, repeats no more.

Step 10a, the first SMF receives the conversation establishing message from the 2nd SMF, and sends conversation establishing to the first UPF Request.

It should be noted that if do not include the information of the first UPF in the conversation establishing message that the first SMF is received, then One SMF also needs that a UPF, such as selection is selected to obtain the first UPF, and specific method can refer to the correlation in abovementioned steps 10 Description.

First SMF includes the single tunnel of multicast group information and the 2nd UPF into the conversation establishing request that the first UPF is sent Information.

Multicast replication list is added in the information of the single tunnel of 2nd UPF by step 11a, the first UPF.

7- step 11a through the above steps is realized and is selected a multicast source, as the first UPF for the 2nd UPF, and incites somebody to action The information of the single tunnel of 2nd UPF is sent to the first UPF, and the first UPF is by the information addition group of the single tunnel of the 2nd UPF Second can be sent to by single tunnel when the subsequent multicast message in need for being sent to the 2nd UPF reaches by broadcasting copy list UPF。

Step 11b, the first UPF have detected whether the corresponding multicast source of multicast group information.

When the first UPF, which is detected, does not have multicast source, then further perform the step of.

Step 12, the first UPF sends reporting message to the first SMF.

The reporting message is for notifying: the first UPF lacks multicast source, includes multicast group information in the reporting message.

Step 13, the first SMF sends instruction information to the first UPF.

The instruction information includes multicast group information, which is used to indicate the first UPF request and multicast group information is added Corresponding multicast group.

As a kind of implementation, which may include that multicast joins message, the multicast join message in include Multicast group information, multicast join message for requesting that the corresponding multicast group of multicast group information is added.

Step 13a, the first SMF send conversation establishing response to the 2nd SMF.

Step 14, the first UPF sends multicast to multicast platform and joins message.

The multicast joins message for requesting that the corresponding multicast group of multicast platform is added.Then multicast platform by this first UPF is added in multicast group indicated by the multicast group information in multicast platform.That is, using multicast platform as the first UPF Multicast source, it is subsequent, be sent to the corresponding multicast message of multicast group information from multicast platform to the first UPF.

Wherein, if not including that multicast joins message in the instruction information of step 13, which is generated by the first UPF and is added Message.

Situation two, the same SMF (by taking the 2nd SMF as an example) manage the first UPF and the 2nd UPF.

Step 10, the 2nd SMF selects the first UPF and sends conversation establishing message.

In the step, the method that the 2nd SMF selects the first UPF can refer to the associated description of step 10 in aforementioned circumstances one. Here the conversation establishing message sent is identical with the conversation establishing message of step 10a of situation one, can refer in aforementioned circumstances one The associated description of step 10a.

Step 11a- step 11b, with the step 11a- step 11b of said circumstances one.

Step 12, the first UPF sends reporting message to the 2nd SMF.

Step 13, the 2nd SMF sends instruction information to the first UPF.

Step 14, with the step 14 of said circumstances one.

Embodiment shown in Fig. 4 (b) creates the single tunnel between UPF, sends multicast message under by single tunnel Grade UPF, copies to user's PDU session for multicast message by junior UPF later.The program makes the part in core network user face UPF supports multicast service, supports multicast protocol and Topology g eneration without whole network.Meanwhile UPF is by user During the single tunnel of session and UPF are added to multicast replication list, if detect it is local without multicast source, can should Information reporting issues creation single tunnel by SMF or the instruction of multicast group is added to SMF, reduces control plane to multicast group pipe The complexity of reason.

It is the sending method schematic diagram of another multicast message provided by the embodiments of the present application with reference to Fig. 4 (c).It compares The embodiment shown in Fig. 4 (b) is whether to have multicast source by SMF detection UPF, and issue creation single tunnel in the present embodiment Or the instruction of multicast group is added.It is illustrated by taking only one SMF (such as the 2nd SMF) as an example below, the 2nd SMF management the One UPF and the 2nd UPF.

Step 1- step 4, the step 1- step 4 of embodiment shown in same Fig. 4 (b).

Step 5, the 2nd SMF inquires on the 2nd UPF whether have multicast source.The mode of inquiry can be with reference to shown in Fig. 4 (b) Related description in embodiment, which is not described herein again.

Step 6, the 2nd SMF is if it is determined that no multicast source on the 2nd UPF, then send conversation establishing instruction to the 2nd UPF.

Conversation establishing instruction in step 8 shown in the same Fig. 4 (b) of conversation establishing message, can refer to foregoing description.

Step 7, the 2nd UPF sends conversation establishing response to the 2nd SMF.

Optionally, if there is the 2nd UPF to generate the information of single tunnel, which may include single tunnel Information.

Step 8, the 2nd SMF selects the first UPF and inquires whether have the multicast source record for being sent to the first UPF.

Wherein, the method that the 2nd SMF selects the first UPF, the 2nd SMF choosing in the situation two of embodiment shown in same Fig. 4 (b) The method for selecting the first UPF is identical.

2nd SMF inquires the method for whether having the multicast source record for being sent to the first UPF, with above-mentioned steps 5.

Step 9, if the 2nd SMF inquires the first UPF and do not have multicast source record, the 2nd SMF sends session wound to the first UPF Build message.

The conversation establishing message includes the information of multicast group information and the single tunnel of the 2nd UPF.Optionally, also comprising adding Enter the instruction information of multicast group.

Multicast replication list is added in the information of the single tunnel of 2nd UPF by step 9a, the first UPF.

Step 10, the first UPF sends multicast and joins message to multicast platform in the case where no multicast source.

Step 14 in the situation two of embodiment shown in the same Fig. 4 (b) of the step.

Step 11, the first UPF sends conversation establishing response to the 2nd SMF.

Step 12, the 2nd SMF sends the instruction of PDU session modification to the 2nd UPF.

PDU session modification instruction includes the information for the multicast group that user is added and user conversation identifies or session letter Breath.

User conversation is added to multicast replication list by step 12a, the 2nd UPF.

Step 13, the 2nd UPF sends the response of PDU session modification to the 2nd SMF.

It should be noted that the execution position of above-mentioned steps 12- step 13, can be any time after step 4 Point.

Embodiment shown in Fig. 4 (c) is simplified compared to embodiment shown in Fig. 4 (b) by control plane managing multicast source The processing of UPF, so that the processing of UPF more meets the principle of C/U (control plane/user face) separation.

It is the sending method schematic diagram of another multicast message provided by the embodiments of the present application with reference to Fig. 4 (d).The implementation Example exist suitable for network between user support multicast perhaps the network element such as UPF of broadcast or admittedly shifting converged network in AGF RAN equipment etc., below by it is solid move the AGF in fusion scene for, and with only one SMF (such as the 2nd SMF) For be illustrated, the 2nd SMF manage the first UPF and the 2nd UPF.

Step 1- step 2, the step 1- step 2 of embodiment shown in same Fig. 4 (b).

It should be noted that the terminal in fixed network, can be residential gateway (residential gateway, RG) Deng.

Step 3, terminal sends multicast to AGF and joins message.

Step 4, AGF handles multicast and joins message as multicast agent, and detects local whether have multicast source or before Whether there is user that identical multicast group was added.

Step 5, in the case where AGF does not locally have multicast source, or same multicast group was added without user before In the case of, reporting message is sent to the 2nd SMF or multicast joins message.

In one implementation, AGF first looks for AMF, then sends reporting message by N2 interface or multicast joins message.

Wherein, if what is sent is reporting message, which includes multicast group information, and the reporting message is for referring to Show: AGF lacks the message of multicast source.If what is sent is that multicast joins message, which joins message believes including multicast group Breath, the multicast join message for requesting that the corresponding multicast group of multicast group information is added.

Optionally, if distributing the information in tunnel by AGF, AGF also sends the information in the tunnel of AGF to AMF.Wherein, tunnel The information in road includes the address information of AGF and the identification information in tunnel.

Then, AMF selects SMF (such as the 2nd SMF of selection), and reporting message or multicast are joined message and are forwarded to second SMF.Optionally, the information in the tunnel of AGF is also sent to the 2nd SMF.

Step 6, the 2nd SMF sends conversation establishing instruction to AGF.

The information in the tunnel of AGF is distributed in conversation establishing instruction including multicast group information and the 2nd SMF.

The step 6 is optional step, when being the information in the tunnel that the 2nd SMF in above-mentioned steps 5 is not received by AGF It executes.

Step 7, AGF sends session response message to the 2nd SMF.

The step 7 is optional step, is the execution when executing step 6.

Alternatively, in another implementation, the tunnel information of AGF is the session response for being distributed by AGF, and passing through step 7 Message is sent to the 2nd SMF.

It should be noted that also could alternatively be in above-mentioned steps 5- step 7 by AGF initiation conversation establishing process, and During being somebody's turn to do, the information in the tunnel of AGF is distributed by AGF and is sent to the 2nd SMF.

Step 8- step 12 can refer to the step 10- step 14 of the situation two of the embodiment of Fig. 4 (b).Here no longer superfluous It states.

Multicast message can be forwarded to AGF by single tunnel, realized logical in AGF by the embodiment of the Fig. 4 (d), the first UPF It crosses single tunnel and receives the unrelated multicast message of user, it can be achieved that when the first UPF is unable to multicast message, it can be by junior's net The AGF of network realizes multicast or broadcast.

Based on identical inventive concept, as shown in figure 5, being a kind of schematic device provided by the present application, which can be with It is user's veil member, radio reception device, accessing gateway equipment, session management network element or chip, any of the above-described implementation can be performed The method of example.

The device 500 includes at least one processor 501, communication line 502, memory 503 and at least one communication Interface 504.

Processor 501 can be a general central processor (central processing unit, CPU), micro process Device, application-specific integrated circuit (application specific integrated circuit, ASIC) or one or more A integrated circuit executed for controlling application scheme program.

Communication line 502 may include an access, and information is transmitted between said modules.

Communication interface 504, using the device of any transceiver one kind, for other equipment or communication, such as Ethernet, wireless access network (radio access network, RAN), WLAN (wireless local area Networks, WLAN), wired access network etc..

Memory 503 can be read-only memory (read-only memory, ROM) or can store static information and instruction Other kinds of static storage device, random access memory (random access memory, RAM) or letter can be stored The other kinds of dynamic memory of breath and instruction, is also possible to Electrically Erasable Programmable Read-Only Memory (electricallyer server able programmable read-only memory, EEPROM), CD-ROM (compact disc read-only memory, CD-ROM) or other optical disc storages, optical disc storage (including compression optical disc, swash Optical disc, optical disc, Digital Versatile Disc, Blu-ray Disc etc.), magnetic disk storage medium or other magnetic storage apparatus or can use In carry or storage have instruction or data structure form desired program code and can by computer access it is any its His medium, but not limited to this.Memory, which can be, to be individually present, and is connected by communication line 502 with processor.Memory It can be integrated with processor.

Wherein, memory 503 be used for store execution application scheme computer executed instructions, and by processor 501 Control executes.Processor 501 is for executing the computer executed instructions stored in memory 503, to realize that the application is following The sending method for the multicast message that embodiment provides.

Optionally, the computer executed instructions in the embodiment of the present application can also be referred to as application code, the application Embodiment is not especially limited this.

In the concrete realization, as one embodiment, processor 501 may include one or more CPU, such as in Fig. 5 CPU0 and CPU1.

In the concrete realization, as one embodiment, device 500 may include multiple processors, such as the processing in Fig. 5 Device 501 and processor 508.Each of these processors can be monokaryon (single-CPU) processor, can also be with It is multicore (multi-CPU) processor.Here processor can refer to one or more equipment, circuit, and/or for locating Manage the processing core of data (such as computer program instructions).

When device shown in fig. 5 is chip, such as it can be the core of the chip of user's veil member, accessing gateway equipment The chip of piece, the chip of radio reception device or session management network element, then it (can also include place that the chip, which includes processor 501, Manage device 508), communication line 502, memory 503 and communication interface 504.Specifically, communication interface 504 can be input and connect Mouth, pin or circuit etc..Memory 503 can be register, caching etc..Processor 501 and processor 508 can be one and lead to CPU, microprocessor, ASIC, or it is one or more for controlling the sending method of the multicast message of any of the above-described embodiment Program execute integrated circuit.

The application can carry out the division of functional module according to above method example to device, for example, can correspond to each Two or more functions can also be integrated in a processing module by each functional module of function division.Above-mentioned collection At module both can take the form of hardware realization, can also be realized in the form of software function module.It needs to illustrate Being is schematically in addition only a kind of logical function partition can have in actual implementation to the division of module in the application Division mode.For example, Fig. 6 shows a kind of device in the case where each function division of use correspondence each functional module Schematic diagram, the device 600 can be first user's veil member involved in above-described embodiment, or be first user's veil member In chip, the device 600 include receiving unit 601, transmission unit 602 and with processing unit 603.

The receiving unit 601, for receiving multicast message；

The transmission unit 602, for sending the multicast message to communication network element by the first single tunnel, described the One single tunnel is between first user's veil member and the communication network element for sending the tunnel of multicast message.

In one possible implementation, the receiving unit 601, is also used to receive the group from session management network element The information of group information and first single tunnel is broadcast, the multicast group information is used to indicate the multicast message.

In one possible implementation, the receiving unit 601 is also used to receive from the session management network element Instruction information, the instruction information is used to indicate the first user veil member request, and that the multicast group information is added is corresponding Multicast group.Optionally, the instruction information includes that multicast joins message, and the multicast joins message to be believed including the multicast group Breath, the multicast join message for requesting that the corresponding multicast group of the multicast group information is added.

In one possible implementation, processing unit 603, for determining corresponding group of no multicast group information Broadcast source；

The transmission unit 602 is also used to send reporting message to the session management network element, and the reporting message includes The multicast group information, for the reporting message for notifying, the first user veil member lacks multicast source.

In one possible implementation, the communication network element is second user veil member；Or the communication network element For accessing gateway equipment；Or the communication network element is radio reception device.

In one possible implementation, the receiving unit 601, is specifically used for:

Receive the multicast message from multicast platform；Alternatively,

The multicast message from third user veil member, second single tunnel are received by the second single tunnel For the tunnel for being used to send multicast message between the third user veil member and the first user veil member；Alternatively,

The multicast message from third party device is received by third single tunnel, the third single tunnel is institute State the tunnel for being used to send multicast message between third party device and the first user veil member；Alternatively,

The multicast message from fourth user veil member is received by Multicast Tunnel.

It should be understood that the device can be used to implement the step executed in the method for the embodiment of the present invention by first user's veil member Suddenly, correlated characteristic is referred to above, and details are not described herein again.

Specifically, function/realization process of receiving unit 601, processing unit 603 and transmission unit 602 in Fig. 6 The computer executed instructions stored in memory 503 can be called to realize by the processor 501 in Fig. 5.Alternatively, in Fig. 6 Function/realization process of processing unit 603 calculating that stores in memory 503 can be called by the processor 501 in Fig. 5 Machine executes instruction to realize, function/realization process of receiving unit 601 and transmission unit 602 in Fig. 6 can be by Fig. 5 Communication interface 504 realize.

Optionally, when the device 600 is chip or circuit, then function/reality of receiving unit 601 and transmission unit 602 Existing process can also be realized by pin or circuit etc..Optionally, when the device 600 is chip, memory 603 can be Storage unit in chip, such as register, caching.Certainly, when the device 600 is user's veil member, memory 603 can To be the storage unit positioned at chip exterior in user veil member, the embodiment of the present application is not especially limited this.

The application can carry out the division of functional module according to above method example to device, for example, can correspond to each Two or more functions can also be integrated in a processing module by each functional module of function division.Above-mentioned collection At module both can take the form of hardware realization, can also be realized in the form of software function module.It needs to illustrate Being is schematically in addition only a kind of logical function partition can have in actual implementation to the division of module in the application Division mode.For example, Fig. 7 shows a kind of device in the case where each function division of use correspondence each functional module Schematic diagram, the device 700 can be communication network element involved in above-described embodiment, which can be wireless access and set Standby, accessing gateway equipment or second user veil member, or be the chip in communication network element, which includes receiving unit 701, transmission unit 702 and with processing unit 703.

The receiving unit 701, it is described for receiving the multicast message from first user's veil member by single tunnel Single tunnel is between the first user veil member and communication network element for sending the tunnel of multicast message；

The transmission unit 702, for sending the multicast message.

In one possible implementation, the receiving unit 701, is also used to receive the finger from session management network element Show that information, the instruction information are used to indicate the creation single tunnel.

Optionally, the instruction information includes the information of the single tunnel.

In one possible implementation, the transmission unit 702 is also used to send institute to the session management network element State the information of single tunnel.

In one possible implementation, processing unit 703, for determining no multicast source；

The transmission unit 702 is also used to send reporting message to the session management network element, and the reporting message includes Multicast group information, the multicast group information are used to indicate the multicast message, and the reporting message is for notifying, the communication network Member lacks multicast source.

In alternatively possible implementation, processing unit 703, for determining no multicast source；

The transmission unit 702 is also used to send reporting message to the session management network element, and the reporting message includes The information of multicast group information and the single tunnel, the multicast group information are used to indicate the multicast message, and described report disappears For breath for notifying, the communication network element lacks multicast source.

It should be understood that the device can be used to implement the step of being executed in the method for the embodiment of the present invention by communication network element, phase It closes feature to be referred to above, details are not described herein again.

Specifically, function/realization process of receiving unit 701, processing unit 703 and transmission unit 702 in Fig. 7 The computer executed instructions stored in memory 503 can be called to realize by the processor 501 in Fig. 5.Alternatively, in Fig. 7 Function/realization process of processing unit 703 calculating that stores in memory 503 can be called by the processor 501 in Fig. 5 Machine executes instruction to realize, function/realization process of receiving unit 701 and transmission unit 702 in Fig. 7 can be by Fig. 5 Communication interface 504 realize.

Optionally, when the device 700 is chip or circuit, then function/reality of receiving unit 701 and transmission unit 702 Existing process can also be realized by pin or circuit etc..Optionally, when the device 700 is chip, memory 703 can be Storage unit in chip, such as register, caching.Certainly, when the device 700 is communication network element, memory 703 can be with It is the storage unit positioned at chip exterior in communication network element, the embodiment of the present application is not especially limited this.

The application can carry out the division of functional module according to above method example to device, for example, can correspond to each Two or more functions can also be integrated in a processing module by each functional module of function division.Above-mentioned collection At module both can take the form of hardware realization, can also be realized in the form of software function module.It needs to illustrate Being is schematically in addition only a kind of logical function partition can have in actual implementation to the division of module in the application Division mode.For example, Fig. 8 shows a kind of device in the case where each function division of use correspondence each functional module Schematic diagram, the device 800 can be session management network element involved in above-described embodiment, or in session management network element Chip, the device 800 include receiving unit 801, transmission unit 802 and with processing unit 803.

The processing unit 803, for obtaining the information of multicast group information and single tunnel, the single tunnel be for First user's veil member sends the tunnel of multicast message to communication network element, and the multicast group information is used to indicate described group of casting Text；

The transmission unit 802, for sending the multicast group information and the unicast to the first user veil member The information in tunnel.

In one possible implementation, the processing unit 803, is specifically used for:

The information of the multicast group information and the single tunnel is obtained from the second session management network element；Alternatively,

The information of the multicast group information and the single tunnel is obtained from the communication network element；Alternatively,

From the local information for obtaining the single tunnel, and the multicast group information derives from the communication network element.

In one possible implementation, receiving unit 801, for receiving the from the first user veil member One reporting message, first reporting message include the multicast group information, and first reporting message is for notifying, and described the One user's veil member lacks multicast source；

The transmission unit 802 is also used to send the first instruction information to the first user veil member, and described first refers to Show that information is used to indicate the first user veil member request and the corresponding multicast group of the multicast group information is added.

Optionally, the first instruction information includes that multicast joins message, and the multicast joins message including the multicast Group information, the multicast join message for requesting that the corresponding multicast group of the multicast group information is added.

In one possible implementation, receiving unit 801, for receiving second reporting and disappear from communication network element Breath, second reporting message includes the multicast group information, and for notifying, the communication network element lacks second reporting message Few multicast source.Optionally, second reporting message further includes the information of the single tunnel.

In one possible implementation, the transmission unit 802 is also used to send the second finger to the communication network element Show that information, the second indication information are used to indicate the creation single tunnel.Optionally, the second indication information includes institute State the information of single tunnel, the information of the single tunnel include the communication network element address information and the single tunnel Identification information.

In one possible implementation, the receiving unit 801 is also used to receive the institute from the communication network element State the information of single tunnel, the information of the single tunnel include the communication network element address information and the single tunnel Identification information.

It should be understood that the device can be used to implement the step executed in the method for the embodiment of the present invention by session management network element Suddenly, correlated characteristic is referred to above, and details are not described herein again.

Specifically, function/realization process of receiving unit 801, processing unit 803 and transmission unit 802 in Fig. 8 The computer executed instructions stored in memory 503 can be called to realize by the processor 501 in Fig. 5.Alternatively, in Fig. 8 Function/realization process of processing unit 803 calculating that stores in memory 503 can be called by the processor 501 in Fig. 5 Machine executes instruction to realize, function/realization process of receiving unit 801 and transmission unit 802 in Fig. 8 can be by Fig. 5 Communication interface 504 realize.

Optionally, when the device 800 is chip or circuit, then function/reality of receiving unit 801 and transmission unit 802 Existing process can also be realized by pin or circuit etc..Optionally, when the device 800 is chip, memory 803 can be Storage unit in chip, such as register, caching.Certainly, when the device 800 is session management network element, memory 803 can To be the storage unit positioned at chip exterior in session management network element, the embodiment of the present application is not especially limited this.

In the above-described embodiments, can come wholly or partly by software, hardware, firmware or any combination thereof real It is existing.When implemented in software, it can entirely or partly realize in the form of a computer program product.The computer program Product includes one or more computer instructions.When loading on computers and executing the computer program instructions, all or It partly generates according to process or function described in the embodiment of the present invention.The computer can be general purpose computer, dedicated meter Calculation machine, computer network or other programmable devices.The computer instruction can store in computer readable storage medium In, or from a computer readable storage medium to the transmission of another computer readable storage medium, for example, the computer Instruction can pass through wired (such as coaxial cable, optical fiber, number from a web-site, computer, server or data center User's line (DSL)) or wireless (such as infrared, wireless, microwave etc.) mode to another web-site, computer, server or Data center is transmitted.The computer readable storage medium can be any usable medium that computer can access or It is comprising data storage devices such as one or more usable mediums integrated server, data centers.The usable medium can be with It is magnetic medium, (for example, floppy disk, hard disk, tape), optical medium (for example, DVD) or semiconductor medium (such as solid-state is hard Disk (Solid State Disk, SSD)) etc..

Various illustrative logic units and circuit described in the embodiment of the present application can be by general processors, number Word signal processor, specific integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic devices, from Door or transistor logic are dissipated, discrete hardware components or above-mentioned any combination of design carry out implementation or operation described function.It is logical It can be microprocessor with processor, optionally, which may be any traditional processor, controller, micro- Controller or state machine.Processor can also be realized by the combination of computing device, such as digital signal processor and Wei Chu Device, multi-microprocessor are managed, one or more microprocessors combine a digital signal processor core or any other like Configuration is to realize.

The step of method described in the embodiment of the present application or algorithm can be directly embedded into hardware, processor execute it is soft The combination of part unit or the two.Software unit can store in RAM memory, flash memory, ROM memory, EPROM storage Other any form of storaging mediums in device, eeprom memory, register, hard disk, moveable magnetic disc, CD-ROM or this field In.Illustratively, storaging medium can be connect with processor, so that processor can read information from storaging medium, and It can be to storaging medium stored and written information.Optionally, storaging medium can also be integrated into the processor.Processor and storaging medium can To be set in asic, ASIC be can be set in terminal device.Optionally, processor and storaging medium also can be set in end In different components in end equipment.

These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one The step of function of being specified in a box or multiple boxes.

Although in conjunction with specific features and embodiment, invention has been described, it is clear that, do not departing from this hair In the case where bright spirit and scope, it can be carry out various modifications and is combined.Correspondingly, the specification and drawings are only institute The exemplary illustration of the invention that attached claim is defined, and be considered as covered in the scope of the invention any and all and repair Change, change, combining or equivalent.Obviously, those skilled in the art various changes and modifications can be made to the invention without It is detached from the spirit and scope of the present invention.If in this way, these modifications and changes of the present invention belong to the claims in the present invention and its Within the scope of equivalent technologies, then the present invention is also intended to include these modifications and variations.

Claims

1. a kind of sending method of multicast message characterized by comprising

First user's veil member receives multicast message；

The first user veil member sends the multicast message, first unicast to communication network element by the first single tunnel Tunnel is between the first user veil member and the communication network element for sending the tunnel of multicast message.

2. the method according to claim 1, wherein the method also includes:

The first user veil member receives the letter of multicast group information and first single tunnel from session management network element Breath, the multicast group information are used to indicate the multicast message.

3. according to the method described in claim 2, it is characterized in that, the method also includes:

The first user veil member receives the instruction information from the session management network element, and the instruction information is used to indicate The corresponding multicast group of the multicast group information is added in the first user veil member request.

4. according to the method described in claim 3, it is characterized in that, the instruction information includes that multicast joins message, described group It broadcasts and joins message including the multicast group information, the multicast joins message for requesting the addition multicast group information corresponding Multicast group.

5. method according to any one of claim 2 to 4, which is characterized in that the method also includes:

The first user veil member determines the corresponding multicast source of no multicast group information, and to the session management network element Reporting message is sent, the reporting message includes the multicast group information, and the reporting message is for notifying, first user Veil member lacks multicast source.

6. a kind of sending method of multicast message characterized by comprising

Communication network element receives the multicast message from first user's veil member by single tunnel, and the single tunnel is described the The tunnel for being used to send multicast message between one user's veil member and the communication network element；

The communication network element sends the multicast message.

7. according to the method described in claim 6, it is characterized in that, the method also includes:

The communication network element receives the instruction information from session management network element, and the instruction information is used to indicate the creation list Broadcast tunnel.

8. the method according to the description of claim 7 is characterized in that the instruction information includes the information of the single tunnel.

9. the method according to the description of claim 7 is characterized in that the method also includes:

The communication network element sends the information of the single tunnel to the session management network element.

10. method according to any one of claims 7 to 9, which is characterized in that the method also includes:

The communication network element determines no multicast source, and sends reporting message, the reporting message to the session management network element Including multicast group information, the multicast group information is used to indicate the multicast message, and the reporting message is described logical for notifying Letter network element lacks multicast source.

11. according to the method described in claim 6, it is characterized in that, the method also includes:

The communication network element determines no multicast source, and sends reporting message, the reporting message to the session management network element Information including multicast group information and the single tunnel, the multicast group information are used to indicate the multicast message, it is described on For report message for notifying, the communication network element lacks multicast source.

12. the method according to any one of claim 6 to 11, which is characterized in that the communication network element is second user Veil member；Or

The communication network element is accessing gateway equipment；Or

The communication network element is radio reception device.

13. a kind of sending method of multicast message characterized by comprising

First session management network element obtains the information of multicast group information and single tunnel, and the single tunnel is for the first user Veil member sends the tunnel of multicast message to communication network element, and the multicast group information is used to indicate the multicast message；

The first session management network element sends the multicast group information and the single tunnel to the first user veil member Information.

14. according to the method for claim 13, which is characterized in that the first session management network element obtains multicast group information With the information of single tunnel, comprising:

The first session management network element obtains the multicast group information and the single tunnel from the second session management network element Information；Alternatively,

The first session management network element obtains the information of the multicast group information and the single tunnel from the communication network element； Alternatively,

The first session management network element is from the local information for obtaining the single tunnel, and the multicast group information derives from institute State communication network element.

15. method described in 3 or 14 according to claim 1, which is characterized in that the method also includes:

The first session management network element receives the first reporting message from the first user veil member, and described first reports Message includes the multicast group information, and for first reporting message for notifying, the first user veil member lacks multicast source；

The first session management network element sends the first instruction information, the first instruction information to the first user veil member It is used to indicate the first user veil member request and the corresponding multicast group of the multicast group information is added.

16. according to the method for claim 15, which is characterized in that the first instruction information includes that multicast joins message, The multicast joins message including the multicast group information, and the multicast joins message for requesting that the multicast group information is added Corresponding multicast group.

17. method described in any one of 3 to 16 according to claim 1, which is characterized in that the method also includes:

The first session management network element receives the second reporting message from communication network element, and second reporting message includes institute Multicast group information is stated, for second reporting message for notifying, the communication network element lacks multicast source.

18. according to the method for claim 17, which is characterized in that the method also includes:

The first session management network element sends second indication information to the communication network element, and the second indication information is for referring to Show the creation single tunnel.

19. method described in 7 or 18 according to claim 1, which is characterized in that the communication network element is second user veil member； Or

The communication network element is accessing gateway equipment；Or

The communication network element is radio reception device.

20. a kind of device, which is characterized in that including receiving unit and transmission unit；

The receiving unit, for receiving multicast message；

The transmission unit, for sending the multicast message, first unicast to communication network element by the first single tunnel Tunnel is between first user's veil member and the communication network element for sending the tunnel of multicast message.

21. device according to claim 20, which is characterized in that the receiving unit is also used to receive from session pipe The multicast group information of network element and the information of first single tunnel are managed, the multicast group information is used to indicate described group of casting Text.

22. device according to claim 21, which is characterized in that the receiving unit is also used to receive from the meeting The instruction information of managed network element is talked about, the instruction information is used to indicate the first user veil member request and the multicast group is added The corresponding multicast group of information.

23. device according to claim 22, which is characterized in that the instruction information includes that multicast joins message, described Multicast joins message including the multicast group information, and the multicast joins message for requesting the addition multicast group information corresponding Multicast group.

24. the device according to any one of claim 21 to 23, which is characterized in that described device further includes that processing is single Member, for determining the corresponding multicast source of no multicast group information；

The transmission unit is also used to send reporting message to the session management network element, and the reporting message includes described group Group information is broadcast, for the reporting message for notifying, the first user veil member lacks multicast source.

25. a kind of device, which is characterized in that including receiving unit and transmission unit；

The receiving unit, for receiving the multicast message from first user's veil member, the unicast tunnel by single tunnel Road is between the first user veil member and communication network element for sending the tunnel of multicast message；

The transmission unit, for sending the multicast message.

26. device according to claim 25, which is characterized in that the receiving unit is also used to receive from session pipe The instruction information of network element is managed, the instruction information is used to indicate the creation single tunnel.

27. device according to claim 26, which is characterized in that the instruction information includes the letter of the single tunnel Breath.

28. device according to claim 26, which is characterized in that the transmission unit is also used to the session management Network element sends the information of the single tunnel.

29. the device according to any one of claim 26 to 28, which is characterized in that described device further includes that processing is single Member, for determining no multicast source；

The transmission unit is also used to send reporting message to the session management network element, and the reporting message includes multicast group Information, the multicast group information are used to indicate the multicast message, and for notifying, the communication network element lacks the reporting message Multicast source.

30. a kind of device, which is characterized in that including processing unit and transmission unit；

The processing unit, for obtaining the information of multicast group information and single tunnel, the single tunnel is to use for first Family veil member sends the tunnel of multicast message to communication network element, and the multicast group information is used to indicate the multicast message；

The transmission unit, for sending the letter of the multicast group information and the single tunnel to the first user veil member Breath.

31. device according to claim 30, which is characterized in that described device further includes receiving unit, is come for receiving From the first reporting message of the first user veil member, first reporting message includes the multicast group information, and described For one reporting message for notifying, the first user veil member lacks multicast source；

The transmission unit is also used to send the first instruction information, the first instruction information to the first user veil member It is used to indicate the first user veil member request and the corresponding multicast group of the multicast group information is added.

32. device according to claim 31, which is characterized in that the first instruction information includes that multicast joins message, The multicast joins message including the multicast group information, and the multicast joins message for requesting that the multicast group information is added Corresponding multicast group.

33. the device according to any one of claim 30 to 32, which is characterized in that described device includes receiving unit, For receiving the second reporting message from communication network element, second reporting message includes the multicast group information, and described For two reporting messages for notifying, the communication network element lacks multicast source.

34. a kind of system, which is characterized in that including user plane functions network element and session management network element；

The session management network element is sent out for obtaining the information of multicast group information and single tunnel, and to user's veil member Send the information of the multicast group information and the single tunnel, the single tunnel is for user's veil member to communication network Member sends the tunnel of multicast message, and the multicast group information is used to indicate the multicast message；

User's veil member, for receiving the multicast group information and the single tunnel from the session management network element Information.

35. system according to claim 34, which is characterized in that the session management network element is also used to receive from institute The first reporting message of user's veil member is stated, first reporting message includes the multicast group information, and described first reports and disappear For breath for notifying, user's veil member lacks multicast source；

The session management network element is also used to send the first instruction information, the first instruction information to user's veil member It is used to indicate user's veil member request and the corresponding multicast group of the multicast group information is added；

User's veil member is also used to receive the first instruction information from the session management network element.