CN114727235A - Multicast service processing method, device, storage medium and electronic equipment - Google Patents
Multicast service processing method, device, storage medium and electronic equipment Download PDFInfo
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- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W40/00—Communication routing or communication path finding
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- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The embodiment of the disclosure provides a multicast service processing method, a device, a storage medium and an electronic device, relates to the technical field of communication, and is used for at least partially solving the technical problems that the support capability of a UPF (unified power flow) to a multicast protocol is poor and the UPF performance is greatly influenced by maintaining a large number of multicast states on the UPF, and meeting the multicast service providing requirement under the condition of accessing a large number of users. The related multicast service processing method comprises the following steps: acquiring a multicast application message sent by first user equipment; judging whether a first target multicast group corresponding to the multicast application message exists in a multicast information management table or not; and if the multicast information management table does not contain the information of the first target multicast group, sending a multicast application message to a router to apply for joining the first target multicast group. The embodiment of the present disclosure can provide a good multicast service with low resource occupation without affecting the performance of the UPF.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a multicast service processing method and apparatus, a storage medium, and an electronic device.
Background
Currently, a device for carrying User traffic in a 5G (5th Generation Mobile Communication Technology, fifth Generation Mobile Communication Technology) Network is a UPF (User Plane Function), and in the evolution process of 5G, the UPF also provides a comprehensive NFV (Network Functions Virtualization), and the self-developed UPF also becomes an important component in the deployment of a 5G core Network. At present, the application scenes of multicast services are more and more abundant, the support capability of the UPF to the multicast protocol is relatively poor, the UPF is different from special hardware, a large number of multicast states are maintained on the UPF, and the performance of the UPF based on the network function virtualization of a general server is greatly influenced.
Disclosure of Invention
The present disclosure provides a method, an apparatus, a storage medium, and an electronic device for processing a multicast service, so as to at least partially solve technical problems that a support capability of a UPF to a multicast protocol is poor, and a UPF performance is greatly affected by maintaining a large number of multicast states on the UPF in the related art.
According to a first aspect of the present disclosure, a method for processing a multicast service is provided, where the method is applied to a user plane function UPF, where a multicast information management table is maintained on the UPF, and the method includes: acquiring a multicast application message sent by first user equipment; judging whether the multicast information management table already contains the information of the first target multicast group corresponding to the multicast application message; and if the multicast information management table does not contain the information of the first target multicast group, sending a multicast application message to a router to apply for joining the first target multicast group.
Optionally, the method further includes: and if the multicast information management table does not contain the information of the first target multicast group, adding the information of the first target multicast group in the multicast information management table.
Optionally, the multicast information management table includes: information of the first target multicast group, a user equipment identity and a user equipment address.
Optionally, the method further includes: and if the multicast information management table contains the information of the first target multicast group, adding the user equipment identifier and the user equipment address of the first user equipment corresponding to the multicast application message into the entry corresponding to the first target multicast group.
Optionally, the method further includes: and receiving multicast data from a router, and forwarding the multicast data according to the user equipment address in the multicast information management table.
Optionally, the method further includes: and if the third user equipment is switched from the source UPF to the current UPF, synchronizing the multicast information management table entry of the third user equipment from the source UPF according to the user equipment identification of the third user equipment.
Optionally, the method further includes: receiving an application message of a second user equipment applying for leaving a second target multicast group; and deleting the table entry corresponding to the second user equipment in the second target multicast group in the multicast information management table.
Optionally, the method further includes: and if the multicast information management table does not contain the information of the second target multicast group, forwarding an application message of the second user equipment for leaving the second target multicast group to a router.
Optionally, the ue identifier is a 5G globally unique temporary identifier, GUTI identifier.
Optionally, the multicast application message is an internet group management protocol IGMP message or a multicast listener discovery protocol MLD message.
According to a second aspect of the present disclosure, there is provided a multicast service processing apparatus, where a multicast information management table is maintained on a UPF, and is applied to a user plane function UPF, the apparatus includes: the acquisition module is used for acquiring the multicast application message sent by the first user equipment; the judging module is used for judging whether a first target multicast group corresponding to the multicast application message exists in a multicast information management table or not; and the sending module is used for sending a multicast application message to a router to apply for joining the first target multicast group if the information of the first target multicast group does not exist in the multicast information management table.
According to a third aspect of the present disclosure, there is also provided an electronic device, including: a processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to execute any multicast service processing method provided by the embodiment of the disclosure by executing the executable instruction.
According to a fourth aspect of the present disclosure, there is also provided a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements any one of the multicast service processing methods provided by the embodiments of the present disclosure.
The multicast service processing method, the device, the storage medium and the electronic device of the embodiment of the disclosure adopt a two-level service architecture, a UPF is used as a medium, a router provides multicast service for the UPF, the UPF provides multicast service for user equipment, when a first user equipment sends a multicast application message to the UPF, the UPF determines whether to apply for joining the first target multicast group to the router or not according to whether the information of the first target multicast group requested by the first user equipment exists in a multicast information management table or not, and when the information of the first target multicast group does not exist in the multicast information management table, the UPF applies for joining the first target multicast group to the router. The UPF can complete the proxy of the multicast service only by maintaining the multicast information management table without maintaining the information of the multicast state (such as a multicast tree) and generating extra burden on the UPF, and can provide good multicast service with lower resource occupation on the premise of not influencing the performance of the UPF.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.
Fig. 1 is a schematic diagram of a secondary service architecture of a UE-UPF-Router according to an embodiment of the present disclosure;
fig. 2 is a flowchart illustrating a multicast service processing method according to an exemplary embodiment of the present disclosure;
fig. 3 is a flowchart illustrating a multicast service processing method according to an exemplary embodiment of the present disclosure;
fig. 4 is a flowchart illustrating a multicast service processing method according to an exemplary embodiment of the present disclosure;
fig. 5 is a flowchart illustrating a multicast service processing method according to an exemplary embodiment of the present disclosure;
fig. 6 is a flowchart illustrating a multicast service processing method according to an exemplary embodiment of the present disclosure;
fig. 7 is a flowchart illustrating a multicast service processing method according to an exemplary embodiment of the present disclosure;
fig. 8 is a flowchart illustrating a multicast service processing method according to an exemplary embodiment of the present disclosure;
fig. 9 is a flowchart illustrating a multicast service processing method according to an exemplary embodiment of the present disclosure;
fig. 10 is a schematic structural diagram illustrating a multicast service processing apparatus according to an exemplary embodiment of the present disclosure;
fig. 11 is a schematic structural diagram of an electronic device shown in accordance with an exemplary embodiment of the present disclosure.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.
Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.
Fig. 1 is a schematic diagram of a secondary service architecture of a UE (User Equipment) -UPF-Router according to an embodiment of the present disclosure. The second-level service architecture may relate to a router, a UPF, a base station, and a user equipment, where the router may include a metropolitan area network/backbone network edge router, and in fig. 1, an edge router PE 5 serves as a multicast source for a certain multicast, and sends multicast data to edge routers PE 2 and PE 3 through a backbone network/lan. The edge router PE 2 provides multicast service for the UPF1, the UPF1 provides multicast service for the UE1 and the UE2, and the UE1 and the UE2 send IGMP/MLD messages and multicast data to the edge router PE 2 through the UPF 1. The edge router PE 3 provides multicast service for the UPF 2, the UPF 2 provides multicast service for the UE 3 and the UE 4, and the UE 3 and the UE 4 send IGMP/MLD messages and multicast data to the edge router PE 3 through the UPF 2.
In the embodiment of the present disclosure, the UPF is a network element in a 5G core network, and may serve as an intermediate device, and respectively assume different roles for the user equipment and the router. The UPF can locally maintain a multicast information management table item for each user equipment, and each user equipment respectively interacts IGMP/MLD messages and multicast data with the UPF. The UPF is used as a Management and proxy intermediary of a user equipment Multicast IGMP (Internet Group Management Protocol)/MLD (Multicast Listener Discovery Protocol) message, performs unified Management on the IGMP/MLD message of the user equipment, writes Multicast application information of the user equipment into a Multicast Management table item maintained on the UPF as a basis for forwarding Multicast data, and does not execute the Multicast routing service related to the IGMP/MLD by the UPF.
Meanwhile, the UPF can also be used as a receiver of the router multicast service, and the router only needs to maintain the multicast state information for the UPF, and only needs to send one multicast data for each multicast, so that the link pressure between the router and the UPF is not increased.
Fig. 2 is a flowchart illustrating a multicast service processing method according to an exemplary embodiment of the present disclosure, the method is applied to a user plane function UPF, where a multicast information management table is maintained, as executed by the UPF, and as shown in fig. 2, the method includes:
in step S202, a multicast application message sent by the first user equipment is acquired;
the multicast application message sent by the first user equipment may be used to request a multicast service from the UPF. In an exemplary embodiment, the multicast application message sent by the first user equipment to the UPF may include information of a target multicast group to be applied, a user equipment identifier of the first user equipment, and an IP (Internet Protocol) address of the first user equipment. The information of the target multicast group may include a multicast source address and/or a multicast group address.
In step S204, it is determined whether the multicast information management table already contains information of the first target multicast group corresponding to the multicast application message;
in an exemplary embodiment, a multicast information management table may be maintained on the UPF, where the multicast information management table may include a multicast information management entry of each user equipment, and the multicast information management entry may include information of a multicast group that the user equipment applies to join and information of the user equipment. Based on this, determining whether the multicast information management table already has the information of the first target multicast group corresponding to the multicast application message may include: and judging whether the list item corresponding to the first target multicast group exists in a multicast information management table maintained on the UPF. The entry corresponding to a multicast group can be uniquely identified by a multicast source address and/or a multicast group address, and correspondingly, the entry of the first target multicast group can be inquired in a multicast information management table maintained on the UPF by the multicast source address and/or the multicast group address, so as to judge whether the entry corresponding to the first target multicast group already exists in the multicast information management table maintained on the UPF.
In step S206, if the multicast information management table does not contain the information of the first target multicast group, a multicast application message is sent to a router to apply for joining the first target multicast group.
In an exemplary embodiment, the router may be a backbone network or a metropolitan network edge router.
In an exemplary embodiment, the absence of the information of the first target multicast group in the multicast information management table may include: the multicast information management table does not have an entry corresponding to the first target multicast group.
In an exemplary embodiment, if the multicast information management table has information of the first target multicast group, it may be determined that the UPF has previously applied to the router for joining the first target multicast group, and therefore, to relieve network pressure, the UPF may not need to send an application message for joining the first target multicast group to the router.
The multicast service processing method of the embodiment of the present disclosure adopts a two-level service architecture, and uses the UPF as a medium, the router provides a multicast service for the UPF, and the UPF provides a multicast service for the user equipment, and when there is a first user equipment sending a multicast application message to the UPF, the UPF determines whether to apply for joining the first target multicast group to the router according to whether the information of the first target multicast group requested by the first user equipment exists in the multicast information management table, and when the information of the first target multicast group does not exist in the multicast information management table, applies for joining the first target multicast group to the router. The UPF can complete the proxy of the multicast service only by maintaining the multicast information management table without maintaining the information of the multicast state (such as a multicast tree) and generating extra burden on the UPF, and can provide good multicast service with lower resource occupation on the premise of not influencing the performance of the UPF.
Furthermore, in embodiments of the present disclosure, the UPF acts only as a multicast recipient to the router. For one multicast, the router only needs to maintain a multicast information management table for UPF, and only needs to transmit one multicast data, so that the pressure on related links is low.
Fig. 3 is a flowchart illustrating a multicast service processing method according to an exemplary embodiment of the present disclosure, and as shown in fig. 3, the method may further include, on the basis of the method shown in fig. 2:
in step S302, if the multicast information management table does not include the information of the first target multicast group, the multicast information management table is added with the information of the first target multicast group.
It should be noted that, the addition of the information of the first target multicast group to the multicast information management table may be performed before step S206 shown in fig. 2, or may be performed after step S206, which is only one case in fig. 3 that is performed after step S206.
In an exemplary embodiment, the information that the first target multicast group does not exist in the multicast information management table maintained by the UPF may include that the entry corresponding to the first group target multicast group does not exist in the multicast information management table maintained by the UPF. After that, the UPF may establish a multicast information management entry according to the received multicast application message from the electronic device, for example, the unique identifier of the user equipment may be used as the device identifier, and the IP address of the user equipment is used as the forwarding identifier, so as to maintain a multicast information management entry for the user equipment, where the entry may simultaneously include information of a multicast source (e.g., multicast source address) that the user equipment applies to use and/or information of a multicast group (e.g., multicast group address) that the user equipment applies to join.
In an embodiment of the present disclosure, the multicast information management table may include:
information of the first target multicast group, a user equipment identifier and a user equipment address.
In an exemplary embodiment, an entry in the multicast information management table may be uniquely identified by a multicast source address and/or a multicast group address, and on this basis, if the UPF determines that an entry corresponding to the first target multicast group already exists in the multicast information management table, the user equipment identifier and the user equipment address may be directly added in the entry.
Fig. 4 is a flowchart illustrating a multicast service processing method according to an exemplary embodiment of the present disclosure, and as shown in fig. 4, the method may further include, on the basis of the method shown in fig. 2:
in step S402, if the multicast information management table has the information of the first target multicast group, the user equipment identifier and the user equipment address of the first user equipment corresponding to the multicast application message are added to the entry corresponding to the first target multicast group.
In an exemplary embodiment, the presence of the information of the first target multicast group in the multicast information management table may include: the multicast information management table has an entry corresponding to the first target multicast group, where the entry may include information of the target multicast group, a user equipment identifier, and a user equipment address, where the information of the target multicast group may include a multicast source address and/or a multicast group address, and therefore, the user equipment identifier and the user equipment address of the first user equipment may be added to the existing entry corresponding to the first target multicast group in the multicast information management table.
Illustratively, the multicast information management table may be as shown in table 1 below.
TABLE 1
As shown in table 1 above, it is assumed that the ue currently sending the multicast application message to the UPF is the ue of the ue ID2 in table 1, and the first target multicast group requested by the ue is a multicast group with a multicast source address of 100.100.100.100 and a multicast group address of 232.0.0.1. After receiving the multicast application message sent by the ue ID2, the UPF may determine, according to table 1 above, that the information of the first target multicast group already exists in the multicast information maintenance table, that is, the ue ID is the entry corresponding to the ue ID2, so in this case, only the ue ID2 and the IP address 192.168.2.1 corresponding to the ue need to be added to the entry, and the entry corresponding to the current application can be obtained.
Fig. 5 is a flowchart illustrating a multicast service processing method according to an exemplary embodiment of the present disclosure, and as shown in fig. 5, the method may further include, on the basis of fig. 2:
in step S502, multicast data from a router is received, and the multicast data is forwarded according to the user equipment address in the multicast information management table.
It should be noted that step S502 may be performed at any stage of the multicast service processing method according to the embodiment of the present disclosure, and fig. 5 only illustrates a case where step S502 is performed after step S206.
In an exemplary embodiment, the user equipment address may be an IP address of the user equipment, and the UPF providing the service may perform forwarding of the multicast data locally according to the IP address assigned to the user equipment.
In an exemplary embodiment, for a certain multicast group (S, G)/(# G) where multiple ues join (where, (# G) indicates that only the multicast group is known and no multicast source is known, (S, G) indicates that there is an entry of a multicast source as well as a multicast group), the UPF may copy corresponding multicast data according to the number of ues joining the multicast group, e.g., there are n ues joining the multicast group (S, G)/(G, G), and the UPF copies corresponding multicast data to obtain n pieces of multicast data, and then forwards the n pieces of multicast data to the n ues according to the IP addresses of the n ues in the multicast information management table.
Fig. 6 is a flowchart illustrating a multicast service processing method according to an exemplary embodiment of the present disclosure, and as shown in fig. 6, the method may further include, on the basis of the method shown in fig. 2:
in step S602, if the third user equipment is switched from the source UPF to the current UPF, the multicast information management entry of the third user equipment is synchronized from the source UPF according to the user equipment identifier of the third user equipment.
It should be noted that step S602 may be directly performed at any stage of the multicast service processing method according to the embodiment of the present disclosure, and fig. 6 only illustrates a case where step S602 is performed after step S206.
In an exemplary embodiment, the user equipment identity may uniquely identify a user equipment, such as a 5 GGUTI. Due to the characteristics of the mobile network, problems of base station handover or session anchor handover may be involved in the mobile network, so that an IP address used by a mobile terminal (which is one example of a user equipment) may be changed. The identifier uniquely identifying one user equipment can be kept unchanged all the time, so that the identifier is used as the identifier of the user equipment in the multicast information management table, and even if UPF (user equipment identifier) needs to be switched, the corresponding multicast information management table item can be synchronously forwarded between the source UPF and the current UPF based on the user equipment identifier, so that the rapid matching of multicast data is realized, and the continuous processing of multicast services can be supported.
In an exemplary embodiment, a source UPF refers to a UPF before the user equipment performs a UPF handover, and a multicast information management entry may also be maintained on the source UPF. The synchronization of the multicast information management entry of the third user equipment from the source UPF according to the user equipment identifier of the third user equipment may include that the current UPF requests the source UPF to obtain the multicast information management entry corresponding to the device identifier of the third user equipment. Still taking the multicast information management table shown in table 1 as an example, assuming that the ue ID of the third ue is ID3, the current UPF may send the ue ID3 to the source UPF, the source UPF may send the multicast information management entry corresponding to the ue ID3 to the current UPF, and after receiving the multicast information management entry corresponding to the ue ID3, the current UPF may write the entry into the multicast information management table locally maintained by the current UPF. It should be noted that table 1 only includes one multicast information management entry corresponding to the ue ID3, and if table 1 includes multicast information management entries corresponding to multiple ue IDs 3, the source UPF may send the multicast information management entries corresponding to the multiple ue IDs 3 to the current UPF together.
Fig. 7 is a flowchart illustrating a multicast service processing method according to an exemplary embodiment of the present disclosure, and as shown in fig. 7, the method may further include, based on the method shown in fig. 2:
in step S702, receiving an application message that the second ue applies for leaving the second target multicast group;
in an exemplary embodiment, the application message of the second user equipment applying for leaving the second target multicast group may include a device identifier of the second user equipment and information of the second target multicast group, where the information of the second target multicast group may include a multicast source address and/or a multicast group address.
In step S704, an entry corresponding to the second ue in the second target multicast group is deleted in the multicast information management table.
It should be noted that step S702 and step S704 may be performed at any stage of the multicast service processing method according to the embodiment of the present disclosure, and fig. 7 only illustrates a case where step S702 and step S704 are performed after step S206.
In an exemplary embodiment, the multicast information management table may include multicast information management entries corresponding to each user equipment, where the multicast information management table distinguishes the user equipment corresponding to each entry by using a user equipment identifier, and based on this, after receiving an application message that the second user equipment applies for leaving the second target multicast group, the multicast information management table may delete, in the multicast information management table, the multicast information management entry corresponding to the equipment identifier of the second user equipment in the second target multicast group. Still taking the multicast information management table shown in table 1 as an example, assuming that the device identifier of the second user device is ID2, the multicast source address of the second target multicast group is 100.100.100.100, and the multicast group address of the second target multicast group is 232.0.0.1, after receiving the application message that the second user device applies for leaving the second target multicast group, the UPF deletes the multicast information management table entry whose multicast source address is 100.100.100.100, the multicast group address is 232.0.0.1, the device identifier is ID2, and the device address is 192.168.2.1 in the multicast information management table maintained by the UPF.
Fig. 8 is a flowchart illustrating a multicast service processing method according to an exemplary embodiment of the present disclosure, and as shown in fig. 8, the method may further include, on the basis of the method shown in fig. 7:
in step S802, if the multicast information management table does not include the information of the second target multicast group, an application message that the second user equipment applies for leaving the second target multicast group is forwarded to a router.
In an exemplary embodiment, since the disappearance of an entry in the multicast information management table is usually caused by deleting a certain entry by the UPF, the UPF may determine whether there are other multicast information management entries of the multicast group corresponding to the entry in the multicast information management entry after deleting the certain multicast information management entry.
In an exemplary embodiment, the application message for the second user equipment to leave the second target multicast group may include a multicast source address and/or a second target multicast group address of the second target multicast group, a device identifier of the second user equipment, and a device address of the second user equipment.
In an exemplary embodiment, the information that the second target multicast group does not exist in the multicast information management table may include: if the multicast information management table originally only has one multicast information management table item corresponding to the second target multicast group, the UPF deletes the multicast information management table item corresponding to the second user equipment under the second target multicast group in the multicast information management table after the second user equipment requests to leave the second target multicast group, and the multicast information management table does not have any table item corresponding to the second target multicast group; if two multicast information management entries corresponding to the second target multicast group exist in the multicast information management table, if one entry is an entry corresponding to the second user equipment and the other entry is an entry corresponding to the fifth user equipment, after the second user equipment requests to leave the second target multicast group, the UPF deletes the multicast information management entry corresponding to the second user equipment in the second target multicast group in the multicast information management table, and then the multicast information management table also has an entry corresponding to the fifth user equipment, under such a condition, the entry corresponding to the second target multicast group does not need to be deleted completely in the multicast information management table.
In an exemplary embodiment, forwarding the application message for the second user equipment to leave the second target multicast group to the router may include transparently transmitting the application message for the second user equipment to leave the second target multicast group to the router.
In an embodiment of the present disclosure, the ue identifier is a 5G GUTI identifier. Illustratively, the multicast information management table may be as shown in table 2 below.
In this embodiment, since the 5G GUTI is a globally unique temporary UE identifier, and the identifier may be kept unchanged in the global state regardless of whether the base station handover or the session anchor point handover is involved, the identifier is used as an identifier of the UE in the multicast information management table, and even if the UE switches the UPF, the UE may synchronously forward the corresponding multicast information management entry between the UPF before the handover and the UPF after the handover based on the 5G GUTI identifier, thereby implementing fast matching of multicast information and implementing service continuity.
In the embodiment of the present disclosure, the multicast application message may be an IGMP or MLD protocol packet.
In an exemplary embodiment, the message that the user equipment sends the request for leaving the second target multicast group to the UPF may also be an IGMP or MLD protocol packet, and based on this, support of the UPF on different communication protocols may be implemented.
It should be noted that, in the embodiment of the present disclosure, the first user equipment, the second user equipment, and the third user equipment may be the same user equipment or different user equipments, and this is not specifically limited in the embodiment of the present disclosure. Similarly, the first target multicast group, the second target multicast group, and the third target multicast group may be the same multicast group or different multicast groups.
The multicast service processing method according to the embodiment of the present disclosure is exemplarily described below with reference to fig. 9. As shown in fig. 9, the multicast service processing method includes:
in step S902, the terminal (which is one example of the above-described electronic device) transmits an IGMP/MLD message to the UPF to request a service of the multicast group a.
Wherein, the IGMP/MLD message may include a multicast source address, a multicast group address, a terminal identifier, and an IP address of the terminal.
In step S904, the UPF establishes a multicast information management table entry according to the received IGMP/MLD message from the terminal. For example, a multicast information management table entry is maintained for the terminal by using the 5G GUTI as the terminal identifier and the IP address as the forwarding mark. The entry may also include a multicast source that the terminal applies for use and a multicast group that the terminal applies for joining.
In step S906, the UPF determines whether there is an application for the multicast group a in the entry of the multicast information management table maintained thereon, and if not, sends an IGMP/MLD message to the edge router of the metro network/backbone network to apply for joining the multicast group a. If so, it is no longer necessary to send IGMP/MLD messages to the metro/backbone edge routers to relieve network stress.
In step S908, if the terminal sends an IGMP/MLD message to request for leaving the multicast group B requested before, the UPF deletes the entry corresponding to the terminal in the multicast group B in the multicast information management table.
In step S910, if there is no entry corresponding to a multicast (S, G)/(×, G) already in the multicast information management table maintained on the UPF, the message that the terminal applies for leaving the multicast group B is transmitted to the edge router of the metro network/backbone network; if the entry corresponding to the multicast group B still exists, the message does not need to be transmitted to the edge router of the metropolitan area network/backbone network.
In step S912, the UPF receives the multicast data sent by the edge router of the metro network/backbone network, and forwards the multicast data according to the corresponding entry in the multicast information management table.
Fig. 10 is a schematic structural diagram of a multicast service processing apparatus according to an exemplary embodiment of the present disclosure, where the apparatus is applicable to a user plane function UPF, and a multicast information management table is maintained on the UPF, where the multicast service processing apparatus may be provided as a UPF device or may be provided as a module in the UPF, and the multicast service processing apparatus may be configured to implement any multicast service processing method provided by the embodiment of the present disclosure, as shown in fig. 10, where the apparatus 1010 includes:
an obtaining module 1012, configured to obtain a multicast application message sent by a first user equipment;
a determining module 1014, configured to determine whether a first target multicast group corresponding to the multicast application message already exists in a multicast information management table;
a sending module 1016, configured to send a multicast application message to a router to apply for joining the first target multicast group if the multicast information management table does not include the information of the first target multicast group.
In an embodiment of the present disclosure, the multicast service processing apparatus may further include:
a first adding module, configured to add, if the multicast information management table does not include the information of the first target multicast group, the information of the first target multicast group in the multicast information management table.
In an embodiment of the present disclosure, the multicast information management table may include: information of the first target multicast group, a user equipment identity and a user equipment address.
In an embodiment of the present disclosure, the multicast service processing apparatus may further include:
and a second adding module, configured to add, if the multicast information management table has the information of the first target multicast group, the user equipment identifier and the user equipment address of the first user equipment corresponding to the multicast application message to the entry corresponding to the first target multicast group.
In an embodiment of the present disclosure, the multicast service processing apparatus may further include:
and the first forwarding module is used for receiving the multicast data from the router and forwarding the multicast data according to the user equipment address in the multicast information management table.
In an embodiment of the present disclosure, the multicast service processing apparatus may further include:
and the synchronization module is used for synchronizing the multicast information management table item of the third user equipment from the source UPF according to the user equipment identification of the third user equipment if the third user equipment is switched from the source UPF to the current UPF.
In an embodiment of the present disclosure, the multicast service processing apparatus may further include:
a receiving module, configured to receive an application message for a second user equipment to apply for leaving a second target multicast group;
and the deleting module is used for deleting the table entry corresponding to the second user equipment in the second target multicast group in the multicast information management table.
In an embodiment of the present disclosure, the multicast service processing apparatus may further include:
and a second forwarding module, configured to forward, to a router, an application message that the second user equipment applies for leaving the second target multicast group if the multicast information management table does not include the information of the second target multicast group.
In an embodiment of the present disclosure, the ue identifier may be a 5G GUTI identifier.
In the embodiment of the present disclosure, the multicast application message may be an IGMP or MLD protocol packet.
The multicast service processing device of the embodiment of the present disclosure adopts a two-level service architecture, and uses the UPF as a medium, the router provides a multicast service for the UPF, and the UPF provides a multicast service for the user equipment, and when there is a first user equipment sending a multicast application message to the UPF, the UPF determines whether to apply for joining the first target multicast group to the router according to whether there is information of the first target multicast group requested by the first user equipment in the multicast information management table, and when there is no information of the first target multicast group in the multicast information management table, applies for joining the first target multicast group to the router. The UPF can complete the proxy of the multicast service only by maintaining the multicast information management table without maintaining the information of the multicast state (such as a multicast tree and the like) and generating extra burden on the UPF, and can provide good multicast service with lower resource occupation on the premise of not influencing the performance of the UPF.
Furthermore, in embodiments of the present disclosure, the UPF acts only as a multicast recipient to the router. For one multicast, the router only needs to maintain a multicast information management table for the UPF, and only needs to transmit one piece of multicast data, so that the pressure on related links is low.
An embodiment of the present disclosure further provides an electronic device, including: a processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to execute any multicast service processing method provided by the embodiment of the disclosure by executing the executable instruction.
The embodiments of the present disclosure further provide a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor, and any multicast service processing method of the embodiments of the present disclosure is provided.
As will be appreciated by one skilled in the art, aspects of the present invention may be embodied as a system, method or program product. Accordingly, various aspects of the present invention may be embodied in the form of: an entirely hardware embodiment, an entirely software embodiment (including firmware, microcode, etc.), or an embodiment combining hardware and software aspects that may all generally be referred to herein as a "circuit," module "or" system.
As shown in fig. 11, electronic device 1100 is embodied in the form of a general purpose computing device. The electronic device may be provided as a UPF device, and the components of the electronic device 1100 may include, but are not limited to: the at least one processing unit 1110, the at least one memory unit 1120, and a bus 1130 that couples various system components including the memory unit 1120 and the processing unit 1110.
Wherein the storage unit stores program code that is executable by the processing unit 1110 to cause the processing unit 1110 to perform steps according to various exemplary embodiments of the present invention as described in the above section "exemplary methods" of the present specification. For example, the processing unit 1110 may execute step S202 shown in fig. 2, to obtain a multicast application message sent by a first user equipment; step S204, judging whether a first target multicast group corresponding to the multicast application message exists in a multicast information management table or not; step S206, if the multicast information management table does not contain the information of the first target multicast group, sending a multicast application message to a router to apply for joining the first target multicast group.
The storage unit 1120 may include a readable medium in the form of a volatile memory unit, such as a random access memory unit (RAM)11201 and/or a cache memory unit 11202, and may further include a read only memory unit (ROM) 11203.
The electronic device 1100 may also communicate with one or more external devices 1200 (e.g., keyboard, pointing device, bluetooth device, etc.), with one or more devices that enable a user to interact with the electronic device 1100, and/or with any devices (e.g., router, modem, etc.) that enable the electronic device 1100 to communicate with one or more other computing devices. Such communication may occur via an input/output (I/O) interface 1150. Also, the electronic device 1100 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network such as the internet) via the network adapter 1160. As shown, the network adapter 1160 communicates with the other modules of the electronic device 1100 over the bus 1130. It should be appreciated that although not shown, other hardware and/or software modules may be used in conjunction with the electronic device 1100, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, among others.
In an exemplary embodiment of the present disclosure, there is also provided a computer-readable storage medium having stored thereon a program product capable of implementing the above-described method of the present specification. In some possible embodiments, aspects of the invention may also be implemented in the form of a program product comprising program code means for causing a terminal device to carry out the steps according to various exemplary embodiments of the invention described in the above section "exemplary methods" of the present description, when said program product is run on the terminal device.
A program product for implementing the above method according to an embodiment of the present invention is described, which may employ a portable compact disc read only memory (CD-ROM) and include program code, and may be run on a terminal device, such as a personal computer. However, the program product of the present invention is not limited in this regard and, in the present document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
A computer readable signal medium may include a propagated data signal with readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A readable signal medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server. In situations involving remote computing devices, the remote computing devices may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to external computing devices (e.g., through the internet using an internet service provider).
It should be noted that although in the above detailed description several modules or units of the device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functionality of two or more modules or units described above may be embodied in one module or unit, according to embodiments of the present disclosure. Conversely, the features and functions of one module or unit described above may be further divided into embodiments by a plurality of modules or units.
Moreover, although the steps of the methods of the present disclosure are depicted in the drawings in a particular order, this does not require or imply that these steps must be performed in this particular order, or that all of the depicted steps must be performed, to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step execution, and/or one step broken down into multiple step executions, etc.
Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, or by software in combination with necessary hardware. Therefore, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a usb disk, a removable hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which may be a personal computer, a server, a mobile terminal, or a network device, etc.) to execute the method according to the embodiments of the present disclosure.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice in the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims (13)
1. A multicast service processing method is applied to a User Plane Function (UPF), wherein a multicast information management table is maintained on the UPF, and the method comprises the following steps:
acquiring a multicast application message sent by first user equipment;
judging whether the multicast information management table has information of a first target multicast group corresponding to the multicast application message;
and if the multicast information management table does not contain the information of the first target multicast group, sending a multicast application message to a router to apply for joining the first target multicast group.
2. The method of claim 1, further comprising:
and if the multicast information management table does not contain the information of the first target multicast group, adding the information of the first target multicast group in the multicast information management table.
3. The method of claim 1, wherein the multicast information management table comprises:
information of the first target multicast group, a user equipment identity and a user equipment address.
4. The method of claim 3, further comprising:
and if the multicast information management table contains the information of the first target multicast group, adding the user equipment identifier and the user equipment address of the first user equipment corresponding to the multicast application message into the entry corresponding to the first target multicast group.
5. The method of claim 3, further comprising:
and receiving multicast data from a router, and forwarding the multicast data according to the user equipment address in the multicast information management table.
6. The method of claim 3, further comprising:
and if the third user equipment is switched from the source UPF to the current UPF, synchronizing the multicast information management table entry of the third user equipment from the source UPF according to the user equipment identification of the third user equipment.
7. The method of claim 1, further comprising:
receiving an application message of a second user equipment applying for leaving a second target multicast group;
and deleting the table entry corresponding to the second user equipment in the second target multicast group in the multicast information management table.
8. The method of claim 7, further comprising:
and if the multicast information management table does not contain the information of the second target multicast group, forwarding an application message of the second user equipment for leaving the second target multicast group to a router.
9. The method according to claim 1, wherein the user equipment identity is a 5G globally unique temporary identity, GUTI, identity.
10. The method according to any one of claims 1 to 9, wherein the multicast application message is an internet group management protocol IGMP message or a multicast listener discovery protocol MLD message.
11. A multicast service processing device is applied to a User Plane Function (UPF), wherein a multicast information management table is maintained on the UPF, and the device comprises:
the acquisition module is used for acquiring the multicast application message sent by the first user equipment;
the judging module is used for judging whether a first target multicast group corresponding to the multicast application message exists in a multicast information management table or not;
and the sending module is used for sending a multicast application message to a router to apply for joining the first target multicast group if the information of the first target multicast group does not exist in the multicast information management table.
12. An electronic device, comprising:
a processor; and
a memory for storing executable instructions of the processor;
wherein the processor is configured to execute the multicast service processing method according to any one of claims 1 to 10 via executing the executable instruction.
13. A computer-readable storage medium, on which a computer program is stored, wherein the computer program, when executed by a processor, implements the multicast service processing method according to any one of claims 1 to 10.
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