CN114125983A - Routing method, session management entity, system and medium for mobile network user plane - Google Patents
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Abstract
The invention relates to the technical field of communication, and provides a routing method, a session management entity, a system and a medium for a mobile network user plane. The routing method of the user plane of the mobile network is applied to a session management entity and comprises the following steps: according to the user plane session, determining the address information and the session requirement information of the user plane network element, wherein the user plane network element supports SRv6 protocol; sending a routing request carrying address information and session requirement information to a data network so that the data network generates a routing strategy of the user plane session according to the address information and the session requirement information; and controlling the user plane network element to carry out SRv6 protocol-based encapsulation and routing on the protocol data unit PDU data of the user plane session according to the routing strategy returned by the data network. The invention communicates with the data network through the session management entity of the user plane of the mobile network to obtain the routing strategy meeting the session requirement information, and further controls the user plane network element to package and route the session data, thereby realizing the guarantee of the specific QoS required by the session.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a routing method, a session management entity, a system, and a medium for a mobile network user plane.
Background
At present, the routing of the user plane data of the mobile network does not support a controlled routing mechanism, and an association mechanism is lacked between the user plane data and a bearer network, so that the requirement of specific QoS (Quality of Service) cannot be met in the aspect of supporting applications such as network slicing, deterministic network and the like.
Specifically, in a traditional user plane routing manner of a mobile network, a user plane network element forwards an encapsulated PDU (Protocol Data Unit) to a destination address through a router, where the user plane network element is unknown about network conditions and routing information before the process starts, and the forwarding process is a random process, and communication indexes are greatly influenced by uncertain factors. If a certain service session of a user needs to meet the determined uplink and downlink delay indexes, the data network cooperation of the mobile network is required to be carried, and accurate delay control is realized through a deterministic route, and the user plane route needs to be configured manually aiming at specific application when actual service and network deployment are carried out, so that the required time is long, and the expansibility and the real-time performance are poor.
It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the invention and therefore may include information that does not constitute prior art that is already known to a person of ordinary skill in the art.
Disclosure of Invention
In view of the above, the present invention provides a routing method, a session management entity, a system and a medium for a mobile network user plane, which can communicate with a data network through the session management entity of the mobile network user plane to obtain a routing policy that satisfies session requirement information, and further control a user plane network element to perform packet and routing of session data, thereby implementing specific QoS required by a session.
According to an aspect of the present invention, there is provided a routing method for a mobile network user plane, applied to a session management entity, including: according to the user plane conversation, determining the address information and the conversation demand information of a user plane network element, wherein the user plane network element supports a segment routing SRv6 protocol; sending a routing request carrying the address information and the session requirement information to a data network so that the data network generates a routing strategy of the user plane session according to the address information and the session requirement information; and controlling the user plane network element to encapsulate and route Protocol Data Unit (PDU) data of the user plane session based on SRv6 protocol according to the routing strategy returned by the data network.
In some embodiments, said controlling, according to the routing policy returned by the data network, the user plane network element to encapsulate and route protocol data unit, PDU, data of the user plane session based on SRv6 protocol includes: sending the routing strategy to the user plane network element, wherein the routing strategy comprises the address of each data network router through which the PDU data needs to pass and the address of a target user plane network element; inserting a segment routing header into the data packet of the PDU data by the user plane network element according to the routing strategy, and sequentially filling the address of each data network router and the address of the target user plane network element into the segment routing header to form SRv6 data packets; and the user plane network element sends the SRv6 data packet to the data network, so that the SRv6 data packet sequentially passes through each data network router to reach the target user plane network element.
In some embodiments, the user plane network element includes a source user plane network element and a destination user plane network element, the source user plane network element is located on a wireless side, and the routing policy includes an uplink routing policy from the source user plane network element to the destination user plane network element and a downlink routing policy from the destination user plane network element to the source user plane network element; the sending the routing policy to the user plane network element includes: sending the uplink routing strategy to the source user plane network element, wherein the target user plane network element in the uplink routing strategy is the target user plane network element; and sending the downlink routing strategy to the target user plane network element, wherein the target user plane network element in the downlink routing strategy is the source user plane network element.
In some embodiments, the determining, according to the user plane session, address information of the user plane network element includes: and determining the address information of the user plane network element comprising the source user plane network element and the target user plane network element with the source user plane network element according to the user plane session which is being established or the user plane session which is being modified.
In some embodiments, the session requirement information comprises a quality of service indicator and a network slice identification of the user plane session.
In some embodiments, the session management entity communicates with the data network via a signaling control entity of the data network.
According to an aspect of the present invention, there is provided a session management entity, comprising: an information determining module, configured to determine address information and session requirement information of a user plane network element according to a user plane session, where the user plane network element supports a segment routing SRv6 protocol; a routing request module configured to send a routing request carrying the address information and the session requirement information to a data network, so that the data network generates a routing policy of the user plane session according to the address information and the session requirement information; and the routing control module is configured to control the user plane network element to encapsulate and route Protocol Data Unit (PDU) data of the user plane session based on SRv6 protocol according to the routing policy returned by the data network.
According to an aspect of the present invention, there is provided a session management entity, comprising: a processor; a memory having executable instructions stored therein; wherein the executable instructions, when executed by the processor, implement a mobile network user plane routing method as in any of the above embodiments.
According to an aspect of the present invention, there is provided a routing system for a user plane of a mobile network, comprising: a session management entity as in any of the embodiments above; a signaling control entity of the data network, configured to respond to the request of the session management entity, and generate a routing policy of the user plane session according to the address information and the session requirement information; a user plane network element configured to encapsulate and route protocol data unit, PDU, data of the user plane session based on SRv6 protocol in response to control by the session management entity.
According to an aspect of the present invention, there is provided a computer readable storage medium for storing a program which, when executed by a processor, implements a method of routing a user plane of a mobile network as described in any of the embodiments above.
Compared with the prior art, the invention has the beneficial effects that:
communicating with a data network through a session management entity of a user plane of a mobile network, and requesting a routing strategy from the data network according to session demand information of a user plane session and address information of a user plane network element; after obtaining the routing strategy of the user plane session, the session management entity controls the user plane network element to package and route the session data according to the routing strategy, thereby ensuring the specific QoS required by the session in the bearing link; in addition, when the deployment of network slices, deterministic networks and the like requires precise QoS control, the association between the mobile network and the data network can be realized, so that the deployment is more automated.
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 invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic diagram illustrating the steps of a routing method for a user plane of a mobile network according to an embodiment of the present invention;
fig. 2 is a diagram illustrating a network architecture for implementing a routing method for a user plane of a mobile network in an embodiment of the present invention;
fig. 3 is a flow chart illustrating a routing method for implementing a user plane of a mobile network according to an embodiment of the present invention;
FIG. 4 is a block diagram of a session management entity in an embodiment of the invention;
fig. 5 is a schematic structural diagram of a session management entity in an embodiment of the present invention.
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 embodiments 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.
The drawings are merely schematic illustrations of the invention 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.
In addition, the flow shown in the drawings is only an exemplary illustration, and not necessarily includes all the steps. For example, some steps may be divided, some steps may be combined or partially combined, and the actual execution sequence may be changed according to the actual situation. The use of "first," "second," and similar terms in the detailed description is not intended to imply any order, quantity, or importance, but rather is used to distinguish one element from another. It should be noted that features of the embodiments of the invention and of the different embodiments may be combined with each other without conflict.
Fig. 1 shows the main steps of a routing method of a mobile network user plane in an embodiment, and referring to fig. 1, the routing method of the embodiment is applied to a mobile network user plane session management entity, and includes:
step S110, according to the user plane conversation, determining the address information and the conversation demand information of the user plane network element, wherein the user plane network element supports a segment routing SRv6 protocol;
the session management entity determines address information of the user plane network element according to the user plane session, and specifically includes: and determining the address information of the user plane network element comprising the source user plane network element and the target user plane network element with the source user plane network element according to the user plane session which is being established or the user plane session which is being modified.
The source user plane network element is a user plane network element (for example, a part in the base station responsible for processing the user plane) located on the wireless side, and is used for processing uplink data of the session, and the destination user plane network element is used for processing downlink data of the session. Both the source user plane network element and the destination user plane network element support SRv6(Segment Routing IPv6, Segment Routing based on IPv6 forwarding plane) protocol, and have SRv6 capability, so that SRv6 encapsulation and Routing can be performed on session data.
The session requirement information specifically includes a quality of service indicator (i.e., QoS indicator) and a network slice identifier (i.e., slice ID) of the user plane session.
Step S120, sending a routing request carrying the address information and the session requirement information to the data network, so that the data network generates a routing policy of the user plane session according to the address information and the session requirement information.
The session management entity and the data network can communicate through a signaling control entity of the data network. The signalling control entity is for example a data Network controller, in particular an SDN (Software Defined Network) controller.
The mobile network user plane session management entity provides session requirement information such as QoS index, slice ID and the like of the user plane session, and source addresses and destination addresses of uplink/downlink data of the user plane session, namely addresses of a source user plane network element and a destination user plane network element, to a data network. Therefore, the data network forms a routing strategy of the uplink/downlink data of the user plane session in the data network according to the information provided by the session management entity, the network topology of the data network and the current network state.
Packets with the same source and destination addresses are routed through different routers within the data network (i.e., different routing policies) and different QoS (e.g., latency) may be achieved. The data packets are routed through different routers within the data Network (i.e. different routing policies), and may correspond to different VPN (Virtual Private Network) networks (identified by using different router IPv6 addresses), and thus correspond to different data Network slices. How to generate a routing policy in the data network to meet the requirements of specific QoS index, slice ID, etc. is handled by the data network, which is not limited by the present invention.
After the data network determines a routing policy (which may be determined by a data network controller, such as an SDN controller), the generated routing policy is sent to the requesting mobile network user plane session management entity.
Step S130, according to the route strategy returned by the data network, controlling the user plane network element to package and route the protocol data unit PDU data of the user plane conversation based on SRv6 protocol.
The mobile network user plane session management entity sends a routing strategy to a user plane network element, wherein the routing strategy comprises IP addresses of data network routers through which PDU data need to pass and addresses of target user plane network elements; therefore, the user plane network element inserts a segment routing header into the data packet of the PDU data according to the routing strategy, and sequentially fills the IP address of each data network router and the address of the target user plane network element into the segment routing header to form SRv6 data packets; and the user plane network element sends SRv6 data packets to the data network so that SRv6 data packets sequentially pass through each data network router to reach the target user plane network element.
The user plane network element specifically comprises a source user plane network element and a target user plane network element, and the routing strategy comprises an uplink routing strategy from the source user plane network element to the target user plane network element and a downlink routing strategy from the target user plane network element to the source user plane network element; sending the routing policy to a user plane network element, specifically including: sending the uplink routing strategy to a source user plane network element, wherein a target user plane network element in the uplink routing strategy is a target user plane network element; and sending the downlink routing strategy to a target user plane network element, wherein the target user plane network element in the downlink routing strategy is a source user plane network element.
Thus, the source user plane network element/destination user plane network element encapsulates the PDU data of the user plane session based on the SRv6 protocol according to the received routing policy and sends to the data network (supporting the SRv6 protocol) for routing. When the PDU data is packaged, the source user plane network element/the destination user plane network element inserts SR Hdr (segment routing header) into the data packet of the PDU data according to the format requirement of SRv6 protocol; and according to the routing strategy (the sequence of the data network routers through which the data packet needs to pass), filling the IPv6 addresses of the corresponding data network routers into the SR Hdr in sequence so as to realize that the data packet can pass through the corresponding routers in the data network according to the routing strategy.
The routing method of the mobile network user plane communicates with the data network through the session management entity of the mobile network user plane, and requests a routing strategy to the data network according to the requirements of QoS index, slice ID and the like of the user plane session and the address of the user plane network element; after obtaining the routing strategy of the user plane session, the session management entity controls the user plane network element to carry out SRv6 encapsulation and routing of session data, thereby ensuring the specific QoS required by the session in a bearing link; in addition, when the deployment of network slices, deterministic networks and the like requires precise QoS control, the association between the mobile network and the data network can be realized, so that the deployment is more automated.
Fig. 2 shows a network architecture implementing a routing method of a mobile network user plane in an embodiment, and fig. 3 shows a flow of the routing method implementing the mobile network user plane. In a complete embodiment, as shown in fig. 2 and fig. 3, a routing method for a user plane of a mobile network includes:
s310, in the session establishing process or the session modifying process of the user equipment 210, the session management entity 230 and the base station 220 (i.e. the source user plane network element, which is in communication with the user equipment 210) determine the address information (including the source address and the destination address) of the uplink/downlink data of the session.
S320, the session management entity 230 requests a routing policy from the data network controller 240 according to the QoS indicator of the session, the slice ID, and other requirement information, and also provides the source address and the destination address of the uplink/downlink data of the session to the data network controller 240. Specifically, the source address of the uplink data is the address of the base station 220, and the destination address of the uplink data is the address of the user plane forwarding network element 250 (i.e., the destination user plane network element, which is in communication with the data network 260); and the source address and the destination address of the downlink data are reversed.
S330, the data network controller 240 obtains a routing policy from the controlled data network 260 according to the requested QoS index, the slice ID, and the source address and the destination address of the session. If necessary, the data network controller 240 may control the data network 260 to form a new routing policy to meet QoS metrics, bearer network slice/VPN, etc. requirements. The routing policies obtained by the data network controller 240 include an upstream routing policy for upstream data and a downstream routing policy for downstream data.
S340, the data network controller 240 returns the routing policy to the session management entity 230.
S350, the session management entity 230 sends the uplink routing policy of the session to the base station 220, and sends the downlink routing policy of the session to the user plane forwarding network element 250.
S360, the base station 220 and the user plane forwarding network element 250 respectively encapsulate the encapsulation of the PDU data of the uplink session and the downlink session according to the received routing policy, and send the PDU data to the data network 260 supporting SRv6 for routing. The method specifically comprises the following steps: for the uplink session, the uplink routing policy is base station 220 → router C1 → router C2 → user plane forwarding network element 250, then the base station 220 encapsulates SR Hdr (including the IP address of router C1, router C2 and the address of user plane forwarding network element 250) into the PDU packet header to form a complete SRv6 packet, and then sends the encapsulated packet to the data network 260. The data network 260 supporting SRv6 will be routed to the user plane forwarding network element 250 through router C1, router C2 step by step according to the SR Hdr in the data packet. Similarly, for the downlink session, the downlink routing policy is user plane forwarding network element 250 → router C4 → router C3 → base station 220, and then the user plane forwarding network element 250 encapsulates SR Hdr (including the IP address of router C4, router C3 and the address of base station 220) into the PDU packet header to form a complete SRv6 packet, and then sends the encapsulated packet to the data network 260. The data network 260 supporting SRv6 will be routed to the base station 220 via routers C4, C3 in steps according to the SR Hdr in the data packet.
In summary, the user plane management of the current mobile network is isolated from the data network carrying the mobile network, and the transmission path of the user plane data cannot be determined intelligently, and the routing cannot be controlled accurately, so that it is difficult to meet the specific QoS required by new applications such as network slicing and deterministic network. By adopting the routing method, the user plane session management entity of the mobile network provides information such as QoS index and slice ID of the corresponding session, and uplink/downlink source address and destination address of the corresponding session to the data network, so as to obtain a routing strategy of the uplink/downlink data of the session provided by the data network in the data network; after obtaining a routing strategy corresponding to a session provided by a data network, a session management entity sends a routing strategy of uplink data corresponding to the session to a base station and sends a routing strategy of downlink data corresponding to the session to a user plane forwarding network element; therefore, the base station/user plane forwarding network element encapsulates and inserts the uplink/downlink data PDU into the SR Hdr according to the received routing strategy and complying with the format requirement of SRv6 protocol, and sends the SR Hdr to the data network supporting SRv6 for routing, thereby realizing that QoS is ensured by accurately controlling the routing of the user plane data of the mobile network under the SRv6 load network, and ensuring that the forwarding of the user plane data between the base station and the user plane forwarding network element meets the requirements of network slicing and QoS.
The embodiment of the present invention further provides a session management entity, which can be used to implement the routing method described in any of the above embodiments. The features and principles of the routing method described in any of the above embodiments may be applied to the following session management entity embodiments. In the following embodiments of the session management entity, the features and principles already set forth regarding the mobile network user plane routing will not be repeated.
Fig. 4 shows the main modules of the session management entity in an embodiment, and referring to fig. 4, the session management entity 400 in this embodiment includes: an information determining module 410, configured to determine address information and session requirement information of a user plane network element according to a user plane session, where the user plane network element supports a segment routing SRv6 protocol; a routing request module 420 configured to send a routing request carrying address information and session requirement information to a data network, so that the data network generates a routing policy of a user plane session according to the address information and the session requirement information; and the route control module 430 is configured to control the user plane network element to encapsulate and route the protocol data unit PDU data of the user plane session based on the SRv6 protocol according to the routing policy returned by the data network.
Further, the session management entity 400 may further include modules for implementing other process steps of the foregoing routing method embodiments, and specific principles of each module may refer to the description of the foregoing routing method embodiments, and will not be described repeatedly here.
The session management entity 400 can obtain a routing policy meeting the requirements of the QoS index, the slice ID, and the like of the session through communication with the data network, and further control the corresponding user plane network element to perform packet and routing of the session data based on the SRv6 protocol according to the routing policy, so that the QoS is guaranteed by accurately controlling the user plane data routing of the mobile network under the SRv6 bearer network, and the forwarding of the user plane data is guaranteed to meet the requirements of the network slice and the QoS.
The embodiment of the present invention further provides a session management entity, which includes a processor and a memory, where the memory stores executable instructions, and when the executable instructions are executed by the processor, the routing method for the user plane of the mobile network described in any of the above embodiments is implemented.
Fig. 5 shows the structure of the session management entity in an embodiment, and it should be understood that fig. 5 only schematically shows various modules, which may be virtual software modules or actual hardware modules, and these modules may be combined, split and added with other modules as required.
The difference between the session management entity 500 of the present embodiment shown in fig. 5 and the session management entity 400 shown in fig. 4 is that the internal architecture and module composition of the session management entity 500 in the present embodiment are not limited to those shown in fig. 4, and the session management entity 500 may be any general electronic device with execution capability as long as it can implement the routing method of the mobile network user plane of any of the above embodiments.
As shown in fig. 5, the session management entity 500 is in the form of a general purpose computing device. The components of session management entity 500 include, but are not limited to: at least one processing unit 510, at least one memory unit 520, a bus 530 connecting different platform components (including memory unit 520 and processing unit 510), a display unit 540, etc.
Wherein the storage unit 520 stores a program code, which can be executed by the processing unit 510, to cause the processing unit 510 to implement the steps of the routing method for the user plane of the mobile network described in any of the embodiments above. For example, processing unit 510 may perform the steps shown in fig. 1.
The memory unit 520 may include a readable medium in the form of a volatile memory unit, such as a random access memory unit (RAM)5201 and/or a cache memory unit 5202, and may further include a read only memory unit (ROM) 5203.
The session management entity 500 may also communicate with one or more external devices 600, and the external devices 600 may be user plane network elements, data network controllers, etc. These external devices 700 enable the user to interactively communicate with the session management entity 500. Session management entity 500 can also communicate with one or more other computing devices, including routers, modems, and the like. Such communication may occur via input/output (I/O) interfaces 550. Also, session management entity 500 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 network adapter 560. The network adapter 560 may communicate with other modules of the session management entity 500 via the bus 530. It should be appreciated that although not shown in the figures, other hardware and/or software modules may be used in conjunction with session management entity 500, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage platforms, to name a few.
The session management entity 500 can obtain a routing policy meeting the requirements of the QoS index, the slice ID, and the like of the session through communication with the data network, and further control the corresponding user plane network element to perform packet and routing of the session data based on the SRv6 protocol according to the routing policy, so that the QoS is guaranteed by accurately controlling the user plane data routing of the mobile network under the SRv6 bearer network, and the forwarding of the user plane data is guaranteed to meet the requirements of the network slice and the QoS.
The embodiment of the present invention further provides a routing system for a mobile network user plane, including: the session management entity described in any of the above embodiments, for example, the session management entity 400 shown in fig. 4 or the session management entity 500 shown in fig. 5; a signaling control entity of the data network, configured to respond to the request of the session management entity, and generate a routing policy of the user plane session according to the address information and the session requirement information; and the user plane network element is configured to encapsulate and route Protocol Data Unit (PDU) data of the user plane session based on SRv6 protocol in response to the control of the session management entity.
The network architecture of the routing system of the user plane of the mobile network can be specifically shown in fig. 2, and the routing process can be shown in fig. 3. The routing system of the user plane of the mobile network of this embodiment can be used to implement the routing method described in any of the above embodiments. The features and principles of the routing method described in any of the above embodiments can be applied to this embodiment, and therefore, the description will not be repeated.
The routing system of the mobile network user plane of the embodiment can obtain a routing strategy meeting the session requirements of QoS (quality of service) indexes, slice IDs (identity) and the like through the communication between the session management entity of the mobile network user plane and the signaling control entity of the data network; and then the session management entity of the user plane of the mobile network controls the corresponding user plane network element to package and route session data based on SRv6 protocol according to the routing strategy, thereby realizing the guarantee of QoS by accurately controlling the routing of the user plane data of the mobile network under the SRv6 load-bearing network and ensuring that the forwarding of the user plane data meets the requirements of network slicing and QoS.
An embodiment of the present invention further provides a computer-readable storage medium, which is used for storing a program, and when the program is executed, the routing method for a mobile network user plane described in any of the above embodiments is implemented. In some possible embodiments, the various aspects of the invention may also be implemented in the form of a program product comprising program code for causing a terminal device to perform the method for mobile network user plane routing described in any of the embodiments above, when the program product is run on the terminal device.
When the storage medium is executed by the processor, the routing strategy meeting the requirements of session QoS index, slice ID and the like can be obtained through communication with a data network, and then the corresponding user plane network element is controlled to carry out the encapsulation and routing of session data based on SRv6 protocol according to the routing strategy, so that the QoS is guaranteed through accurately controlling the routing of the user plane data of the mobile network under a SRv6 load-bearing network, and the forwarding of the user plane data is ensured to meet the requirements of network slice and QoS.
The storage medium may take the form of a portable compact disc read only memory (CD-ROM) and include program code, and may be run on a functional device such as a session management network element. However, the program product of the present invention is not limited in this respect, and 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 of readable storage media include, but are not limited to: 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 readable storage medium may include a propagated data signal with readable program code embodied therein, either 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 storage 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 storage 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 the case of a remote computing device, the remote computing device 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 an external computing device, such as through the internet using an internet service provider.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. A routing method for a user plane of a mobile network is applied to a session management entity and comprises the following steps:
according to the user plane conversation, determining the address information and the conversation demand information of a user plane network element, wherein the user plane network element supports a segment routing SRv6 protocol;
sending a routing request carrying the address information and the session requirement information to a data network so that the data network generates a routing strategy of the user plane session according to the address information and the session requirement information;
and controlling the user plane network element to encapsulate and route Protocol Data Unit (PDU) data of the user plane session based on SRv6 protocol according to the routing strategy returned by the data network.
2. The routing method according to claim 1, wherein said controlling the user plane network element to encapsulate and route protocol data unit, PDU, data of the user plane session based on SRv6 protocol according to the routing policy returned by the data network comprises:
sending the routing strategy to the user plane network element, wherein the routing strategy comprises the address of each data network router through which the PDU data needs to pass and the address of a target user plane network element;
inserting a segment routing header into the data packet of the PDU data by the user plane network element according to the routing strategy, and sequentially filling the address of each data network router and the address of the target user plane network element into the segment routing header to form SRv6 data packets;
and the user plane network element sends the SRv6 data packet to the data network, so that the SRv6 data packet sequentially passes through each data network router to reach the target user plane network element.
3. The routing method according to claim 2, wherein the user plane network element comprises a source user plane network element and a destination user plane network element, the source user plane network element is located on a wireless side, and the routing policy comprises an uplink routing policy from the source user plane network element to the destination user plane network element and a downlink routing policy from the destination user plane network element to the source user plane network element;
the sending the routing policy to the user plane network element includes:
sending the uplink routing strategy to the source user plane network element, wherein the target user plane network element in the uplink routing strategy is the target user plane network element;
and sending the downlink routing strategy to the target user plane network element, wherein the target user plane network element in the downlink routing strategy is the source user plane network element.
4. The routing method of claim 1, wherein the determining the address information of the user plane network element according to the user plane session comprises:
and determining the address information of the user plane network element comprising the source user plane network element and the target user plane network element with the source user plane network element according to the user plane session which is being established or the user plane session which is being modified.
5. The routing method of claim 1, wherein the session requirement information comprises a quality of service indicator and a network slice identification of the user plane session.
6. The routing method of claim 1, wherein the session management entity communicates with the data network through a signaling control entity of the data network.
7. A session management entity, comprising:
an information determining module, configured to determine address information and session requirement information of a user plane network element according to a user plane session, where the user plane network element supports a segment routing SRv6 protocol;
a routing request module configured to send a routing request carrying the address information and the session requirement information to a data network, so that the data network generates a routing policy of the user plane session according to the address information and the session requirement information;
and the routing control module is configured to control the user plane network element to encapsulate and route Protocol Data Unit (PDU) data of the user plane session based on SRv6 protocol according to the routing policy returned by the data network.
8. A session management entity, comprising:
a processor;
a memory having executable instructions stored therein;
wherein the executable instructions, when executed by the processor, implement a method of routing for a user plane of a mobile network according to any of claims 1-6.
9. A routing system for a user plane of a mobile network, comprising:
a session management entity according to claim 7 or 8;
a signaling control entity of the data network, configured to respond to the request of the session management entity, and generate a routing policy of the user plane session according to the address information and the session requirement information;
a user plane network element configured to encapsulate and route protocol data unit, PDU, data of the user plane session based on SRv6 protocol in response to control by the session management entity.
10. A computer-readable storage medium storing a program, which when executed by a processor implements a method for routing a user plane of a mobile network according to any one of claims 1 to 6.
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