WO2023280088A1 - Data routing method and apparatus - Google Patents

Abstract

A data routing method and apparatus. The data routing method comprises: receiving an IP sub-pool allocated from a core network, wherein the IP sub-pool comprises a plurality of IP addresses; receiving an IP packet from a user equipment, wherein the IP packet comprises a target address of a target user equipment, and the target address is selected from an IP sub-pool corresponding to an access device which is connected to the target user equipment; matching the target address with each IP address in the IP sub-pool, so as to obtain a matching result; and according to the matching result, determining whether to locally route the IP packet. By means of the technical solution of the present invention, local routing between local area network devices in a new radio network can be realized.

Description

Data routing method and device

This application claims the priority of the Chinese patent application with the application number 202110780028.1 and the title of the invention "data routing method and device" filed with the China Patent Office on July 9, 2021, the entire contents of which are incorporated herein by reference.

technical field

The invention relates to the field of communication technology, in particular to a data routing method and device.

Background technique

In the current 3rd Generation Partnership Project (3rd Generation Partnership Project, 3GPP) communication, terminal-to-terminal communication is completed through the core network. In the fifth generation mobile communication technology (5th generation mobile networks or 5th generation wireless systems, 5G), the concept of 5G local area network (Local Area Network, LAN) is introduced, but the user plane function (User Plane Function) of the core network is still required , UPF) for local switching, or through the tunnel between PDU Session Anchor (PSA) UPF for LAN communication.

In the future, there will be more and more home networks, and the devices in these home networks will pass through the same access point, such as pre-wireless access station/premises radio access station (PRAS), or through the same Residential gateways, such as evolved residential gateways (Evolved Residential Gateway, eRG), etc., are connected to the 5G core network, and a large amount of data only occurs between devices under the same home network (such as connecting printers, etc.).

However, in the existing home network, the routing of data between devices through the core network will be inefficient and delayed.

Contents of the invention

The technical problem solved by the invention is how to realize the local routing between LAN devices in the new wireless network.

In order to solve the above technical problems, an embodiment of the present invention provides a data routing method, the data routing method includes: receiving a sub-IP pool allocated from the core network, the sub-IP pool includes a plurality of IP addresses; receiving an IP packet from a user equipment , the IP packet includes the target address of the target user equipment, the target address is selected from the sub-IP pool corresponding to the access device connected to the target user equipment; the target address and each IP in the sub-IP pool Match the addresses to obtain a matching result; determine whether to route the IP packet locally according to the matching result.

Optionally, the determining whether to locally route the IP packet according to the matching result includes: if the matching result indicates that there is an IP address matching the target address in the sub-IP pool, locally routing the IP packet. or, if the matching result indicates that there is no IP address matching the target address in the sub-IP pool, forwarding the IP packet to an upper-level routing node.

Optionally, before receiving the sub-IP pool allocated from the core network includes: when registering with the core network, reporting the ability to support PDU sessions, so that the core network can allocate according to the ability to support PDU sessions The sub-IP pool.

Optionally, the ability to support PDU sessions includes the maximum number of supported PDU sessions or the maximum number of supported LAN PDU sessions, the greater the value of the maximum number, the greater the number of IP addresses in the sub-IP pool .

In order to solve the above-mentioned technical problems, the embodiment of the present invention also discloses a data routing method. The data routing method includes: assigning sub-IP pools to each access device, and the sub-IP pools include multiple IP addresses, and different access devices correspond to The IP addresses in the sub-IP pools do not overlap; when the user equipment establishes a PDU session, select an IP address from the sub-IP pool corresponding to the access device according to the access device connected to the user equipment and assign it to the user equipment, Wherein, the IP packet sent by each user equipment includes the target address of the target user equipment, so that the access device receiving the IP packet can associate the target address with each IP address in the sub-IP pool corresponding to the access device Perform matching to obtain a matching result, and determine whether to route the IP packet locally according to the matching result.

Optionally, when the user equipment establishes a PDU session, selecting an IP address from the sub-IP pool corresponding to the access device according to the access device connected to the user equipment to allocate to the user equipment includes: according to the The service type corresponding to the PDU session determines whether to authorize the user equipment to perform local routing, and/or determines whether to authorize the user equipment to perform local routing according to the identifier of the user equipment; when determining to authorize the user equipment to perform local routing, Selecting an IP address from a sub-IP pool corresponding to the access device according to the access device connected to the user device and assigning it to the user device.

Optionally, the allocation of sub-IP pools for each access device includes: selecting an IP address from one or more IP pools corresponding to the current UPF to obtain a sub-IP pool corresponding to each access device; Each IP address in the sub-IP pool corresponding to the access device is sent to the access device.

Optionally, the sending each IP address in the sub-IP pool corresponding to each access device to the access device includes: sending each IP address in the sub-IP pool corresponding to each access device to the access device; or, when each IP address in the sub-IP pool is numerically continuous, send the IP address with the smallest value, the IP address with the largest value, and/or the total number of IP addresses in the sub-IP pool to the access device.

Optionally, the data routing method further includes: monitoring the utilization rate of the IP address in the sub-IP pool corresponding to each gateway, and updating the sub-IP pool according to the utilization rate; and/or, monitoring the current UPF load, and Updating the sub-IP pool according to the load.

The embodiment of the present invention also discloses a data routing method. The data routing method includes: when establishing a PDU session, sending the identifier of the currently connected access device to the core network; receiving the IP address allocated by the core network, and the core The network selects the IP address from the sub-IP pool corresponding to the access device, and the sub-IP pool includes multiple IP addresses; sends an IP packet, and the IP packet includes the target address of the target user equipment for receiving The access device of the IP packet matches the target address with each IP address in the sub-IP pool corresponding to the access device to obtain a matching result, and determines whether to route the IP packet locally according to the matching result.

The embodiment of the present invention also discloses a data routing device, which is characterized in that it includes:

The sub-IP pool receiving module is used to receive the sub-IP pool allocated from the core network, and the sub-IP pool includes a plurality of IP addresses;

The IP packet receiving module is configured to receive an IP packet from the user equipment, the IP packet includes a target address of the target user equipment, and the target address is selected from the sub-IP pool corresponding to the access device connected to the target user equipment ;

A matching module, configured to match the target address with each IP address in the sub-IP pool to obtain a matching result;

A routing module, configured to determine whether to route the IP packet locally according to the matching result.

The embodiment of the present invention also discloses a data routing device, which is characterized in that it includes:

A sub-IP pool allocation module, configured to allocate a sub-IP pool for each access device, the sub-IP pool includes a plurality of IP addresses, and the IP addresses in the sub-IP pools corresponding to different access devices do not overlap;

The IP address allocation module is configured to select an IP address from the sub-IP pool corresponding to the access device according to the access device connected to the user equipment to allocate to the user equipment when the user equipment establishes a PDU session, wherein each The IP packet sent by the user equipment includes the target address of the target user equipment, so that the access device that receives the IP packet matches the target address with each IP address in the sub-IP pool corresponding to the access device, to obtain a matching result, and determine whether to route the IP packet locally according to the matching result.

The embodiment of the present invention also discloses a data routing device. The data routing device includes: an identifier sending module, used to send the identifier of the currently connected access device to the core network when establishing a PDU session; an IP address receiving module, used to Receive the IP address assigned by the core network, the core network selects the IP address from the sub-IP pool corresponding to the access device, and the sub-IP pool includes a plurality of IP addresses; the IP packet sending module is used to send An IP packet, wherein the IP packet includes a target address of the target user equipment, so that the access device that receives the IP packet matches the target address with each IP address in the sub-IP pool corresponding to the access device, to obtain a matching result, and determine whether to route the IP packet locally according to the matching result.

The embodiment of the present invention also discloses a computer-readable storage medium, on which a computer program is stored, and when the computer program is run by a processor, the steps of the data routing method are executed.

The embodiment of the present invention also discloses an access device, including a memory and a processor, the memory stores a computer program that can run on the processor, and the processor executes the computer program when running the computer program. The steps of the data routing method.

The embodiment of the present invention also discloses a core network device, including a memory and a processor, the memory stores a computer program that can run on the processor, and the processor executes the computer program when running the computer program. The steps of the data routing method.

The embodiment of the present invention also discloses a user equipment, including a memory and a processor, the memory stores a computer program that can run on the processor, and the processor executes the data when running the computer program. The steps of the routing method.

Compared with the prior art, the technical solutions of the embodiments of the present invention have the following beneficial effects:

In the technical scheme of the present invention, each access device, such as a home gateway, corresponds to a sub-IP pool, and the IP address of the user equipment connected to the home gateway is selected from the sub-IP pool corresponding to the home gateway, then the home gateway is in the sub-IP pool. After receiving the IP packet, it can decide whether to perform local routing according to the destination address in the IP packet. The technical solution of the present invention can implement efficient routing from device to device through local routing between different access devices for services between user devices in a local area network, so as to reduce data transmission delay and improve data transmission efficiency.

Description of drawings

FIG. 1 is a schematic diagram of a data routing scenario in the prior art;

Fig. 2 is a flowchart of a data routing method according to an embodiment of the present invention;

FIG. 3 is a flow chart of another data routing method according to an embodiment of the present invention;

FIG. 4 is a flowchart of another data routing method according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of an application scenario according to an embodiment of the present invention;

6 is a schematic structural diagram of a data routing device according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of another data routing device according to an embodiment of the present invention;

Fig. 8 is a schematic structural diagram of another data routing device according to an embodiment of the present invention.

detailed description

As mentioned in the background art, in the existing home network, the routing of data between devices through the core network will be inefficient and delayed.

The inventor of the present application also found that TR 22.858 introduces a new application scenario according to the current research progress of 3GPP on indoor enhancement. In this scenario, devices connected to the same eRG can implement local routing at the eRG without passing through the 5G core network. For example, the information obtained by the sensor in the basement can be transmitted to the user terminal in the attic through PRAS-eRG-PRAS on, efficient and fast. But the current 5G local area network (Local Area Network, LAN) is carried out with UPF as the anchor point of the local area network, that is, when communicating in the local area network, all data must be routed and forwarded locally through UPF. As shown in Figure 1, the user equipment (UE) in the local area network includes a printer UE1, a computer UE2, and multiple sensors UE3. When transmitting data between UE1, UE2, and UE3, they all need to be routed through the base station and the core network. Forward. In the research of R16 and R17, 5G LAN supports two types of LAN communication, UPF-based local switching (Local-switch based) and PSA UPF-based N19 tunnel (N19-based). The current solution can already avoid forwarding to the Data Network (Data Network) for the communication between UEs that support the LAN, but it must go through the core network, especially the UPF, instead of passing through some local network nodes (such as PRAS/eRG, etc.) Perform local route forwarding.

The full name of said IP in the embodiment of the present invention is Internet Protocol, and the Chinese meaning is Internet Protocol.

In the technical solution of the present invention, each network node, such as a home gateway, has a corresponding sub-IP pool, and the IP address of the user equipment connected to the home gateway is selected from the sub-IP pool corresponding to the home gateway, then the home gateway is receiving After receiving the IP packet, it can be determined whether to perform local routing according to the destination address in the IP packet. The technical scheme of the present invention can realize efficient routing from device to device through local routing between different network nodes for services between user devices in a local area network.

The Fangming technical solution can be applied to 5G (5Generation) communication systems, 4G, 3G communication systems, and various new communication systems in the future, such as 6G, 7G, etc.

In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

Fig. 2 is a flowchart of a data routing method according to an embodiment of the present invention.

The data routing method in the embodiment of the present invention can be used on the side of the network node (also called an access device) in the local area network, such as a residential gateway (Residential Gateway, RG), an evolved residential gateway (Evolved Residential Gateway, eRG), a former Set up wireless access station/resident wireless access network (Premises Radio Access Station, PRAS), etc. That is, each step of the method shown in FIG. 2 may be executed by the above-mentioned access device.

Specifically, the data routing method may include the following steps:

Step S201: receiving a sub-IP pool allocated from the core network, the sub-IP pool including multiple IP addresses;

Step S202: Receive an IP packet from the user equipment, the IP packet includes a target address of the target user equipment, and the target address is selected from a sub-IP pool corresponding to the access device to which the target user equipment is connected;

Step S203: matching the target address with each IP address in the sub-IP pool to obtain a matching result;

Step S204: Determine whether to route the IP packet locally according to the matching result.

It should be noted that the sequence numbers of the steps in this embodiment do not represent a limitation on the execution order of the steps.

In the embodiment of the present invention, each UPF corresponds to one or more IP pools, each IP pool corresponds to a Data Network Name (Data Network Name, DNN), and user equipment (User Equipment, UE) under the same 5G LAN corresponds to the same The setting of the specific IP pool of the DNN can be configured by a network manager, a Dynamic Host Configuration Protocol (Dynamic Host Configuration Protocol, DHCP) server, and the like.

In the embodiment of the present invention, the local area network includes at least one access device and at least one user equipment. The user equipment accesses the access device.

In specific implementation, the core network can allocate sub-IP pools for access devices in the LAN, and the sub-IP pools can be a subset of one or more IP pools corresponding to the current UPF, that is, the IP addresses in the sub-IP pools are selected from the current IP addresses in one or more IP pools corresponding to the UPF. The sub-IP pool corresponding to the access device is dedicated to the access device, and is mainly used for allocation to user equipment under the access device. The IP addresses in the sub-IP pools corresponding to different access devices do not overlap.

After the core network allocates the sub-IP pool to the access device, it can notify the access device of the content of the sub-IP pool. In the specific implementation of step S201, the access device receives the sub-IP pool allocated to the access device from the core network.

In a specific implementation, when the user equipment sends the IP packet, the IP packet includes the target address of the target user equipment, and the target address is selected from the sub-IP pool corresponding to the access device to which the target user equipment is connected.

Thus, in the specific implementation of step S202, after receiving the IP packet, the access device can obtain the target address of the target user equipment of the IP packet. Specifically, the target address may be obtained by parsing the header of the IP packet.

In the specific implementation of step S203, the access device may match the target address with each IP address in the sub-IP pool to obtain a matching result. That is to say, the access device can determine whether the target user equipment is connected to the access device by matching the target address with each IP address in the corresponding sub-IP pool.

Furthermore, in step S204, the access device may determine whether to route the IP packet locally according to the matching result. Wherein, the locally routed IP packet refers to directly forwarding the IP packet without going through the core network.

When the matching result indicates that there is an IP address matching the target address in the sub-IP pool, it means that the target user equipment is connected to the access device, and the access device can directly perform local routing on the IP packet. Conversely, when the matching result indicates that there is no IP address matching the target address in the sub-IP pool, it means that the target user equipment is not connected to the access device, and the access device can forward the IP packet to the upper-level routing node.

In the embodiment of the present invention, by configuring the IP address, for example, configuring a sub-IP pool for the access device, and configuring the IP address in the sub-IP pool corresponding to the access device connected to the user equipment, so that the access device forwards the data packet , it can be learned whether the target user equipment of the data packet is the user equipment connected to it (local routing can only be realized between the access device and the connected user equipment), so as to realize local routing.

In the embodiments of the present invention, for services between user devices in a local area network, efficient routing from device to device can be realized through local routing between different access devices, so as to reduce data transmission delay and improve data transmission efficiency.

In a non-limiting embodiment of the present invention, step S204 shown in FIG. 2 may include the following steps: if the matching result indicates that there is an IP address matching the target address in the sub-IP pool, the local routing or, if the matching result indicates that there is no IP address matching the target address in the sub-IP pool, forwarding the IP packet to an upper-level routing node.

As mentioned above, the matching result may indicate whether the target user equipment is connected to the access device. When the target user equipment is connected to the access device, the access device can implement local routing, otherwise it needs to be forwarded to the upper node for routing via the core network.

In a non-limiting embodiment of the present invention, before step S201 shown in FIG. 2 , the following steps may be included: when registering with the core network, report the ability to support PDU sessions, for the core network to use according to the The ability to support PDU sessions allocates the sub-IP pool.

In this embodiment, when the access device registers with the core network, it reports its capabilities to the core network, such as a network element function (Network Element Function, NEF). Specifically, the ability to support PDU sessions may be reported, so that the core network may allocate the sub-IP pool according to the ability to support PDU sessions.

Further, the capability of supporting PDU sessions includes the maximum number of supported PDU sessions or the maximum number of supported LAN PDU sessions. The larger the value of the maximum number, the more IP addresses in the sub-IP pool.

Specifically, based on the capabilities of the access device, the core network may select a part of the IP pool allocated to the UPF as a sub-IP pool dedicated to the access device.

Referring to FIG. 3 , the data routing method in the embodiment of the present invention can be used on the core network side in the local area network. That is, each step of the method shown in FIG. 3 can be executed by the core network.

Specifically, the data routing method may include the following steps:

Step S301: Allocate sub-IP pools for each access device, the sub-IP pools include multiple IP addresses, and the IP addresses in the sub-IP pools corresponding to different access devices do not overlap;

Step S302: When the user equipment establishes a PDU session, select an IP address from the sub-IP pool corresponding to the access device according to the access device connected to the user equipment to allocate to the user equipment, wherein each user equipment sends The IP packet includes the target address of the target user equipment, so that the access device that receives the IP packet matches the target address with each IP address in the sub-IP pool corresponding to the access device to obtain a matching result , and determine whether to route the IP packet locally according to the matching result.

In the embodiment of the present invention, the core network may allocate sub-IP pools for each access device. In addition, the core network can also assign an IP address to the UE. Wherein, the IP address of the UE is selected from the sub-IP pool corresponding to the access device connected to the UE.

Thus, an IP pool is configured for the access device through the core network, and an IP address is configured for the user equipment, so that the access device implements local routing of data packets.

In a non-limiting embodiment of the present invention, step S302 shown in FIG. 3 may include the following steps: determining whether to authorize the user equipment to perform local routing according to the service type corresponding to the PDU session, and/or according to the user The identifier of the device determines whether to authorize the user equipment to perform local routing; when determining to authorize the user equipment to perform local routing, select an IP address from the sub-IP pool corresponding to the access device according to the access device connected to the user equipment An address is assigned to the user equipment.

In the embodiment of the present invention, when assigning an IP address to the user equipment, it is first necessary to determine whether the user equipment or the service corresponding to the PDU session established by the user equipment is authorized to allow local routing. Specifically, the authorization may be pre-configured by the core network. Only when the user equipment or the service authorization corresponding to the PDU session established by the user equipment allows local routing, will the IP address be selected from the sub-IP pool and allocated to the user equipment. Otherwise, the core network allocates an IP address to the user equipment from outside the sub-IP pool.

In a non-limiting embodiment of the present invention, step S301 shown in FIG. 3 may include the following steps: selecting an IP address from one or more IP pools corresponding to the current UPF to obtain sub-IP pools corresponding to each access device ; Send each IP address in the sub-IP pool corresponding to each access device to the access device.

Further, each IP address in the sub-IP pool corresponding to each access device is sent to the access device one by one; or, when the IP addresses in the sub-IP pool are consecutive in value, the sub-IP The IP address with the smallest numerical value, the IP address with the largest numerical value, and the total number of IP addresses in the pool are sent to the access device.

In the embodiment of the present invention, when the IP addresses in the sub-IP pool are consecutive, only the IP address with the smallest value, the IP address with the largest value, and the total number of IP addresses may be sent to the access device to reduce The amount of data sent, saving signaling overhead.

In a non-limiting embodiment of the present invention, the core network monitors the utilization rate of the IP address in the sub-IP pool corresponding to each gateway, and updates the sub-IP pool according to the utilization rate; and/or, monitors the load of the current UPF , and update the sub-IP pool according to the load.

In the embodiment of the present invention, the core network can monitor the utilization rate of IP addresses in the sub-IP pool. The utilization rate can be the ratio of the number of used IP addresses to the total number of IP addresses. The utilization rate can measure the activity of the access device . Updating the sub-IP pool according to the utilization rate may be, when the utilization rate is lower than a preset threshold, reducing the number of IP addresses in the sub-IP pool, or reconfiguring a smaller number of IP addresses for the IP sub-pool; When the utilization rate reaches the preset threshold, the number of IP addresses in the sub-IP pool is increased, or a larger number of IP addresses is reconfigured for the IP sub-pool.

In the embodiment of the present invention, the core network can also monitor the current UPF load, which can represent the current UPF load, and can be calculated in any implementable manner. Updating the sub-IP pool according to the load means that when the load reaches a preset threshold, it means that the current UPF load is relatively heavy, and the UPF needs to be switched, so the sub-IP pool needs to be updated accordingly, that is, from the switched UPF The IP address selected in the corresponding IP pool is reallocated to the sub-IP pool.

In a specific implementation, the core network may monitor and obtain the aforementioned utilization rate and load within a period of time, such as a preset period of time.

Please refer to FIG. 4 , the data routing method of the embodiment of the present invention can be used on the user equipment side in the local area network, such as mobile phones, computers, tablet computers, printers, smart home equipment, and the like. That is, each step of the method shown in FIG. 4 may be executed by the user equipment.

Specifically, the data routing method may include the following steps:

Step S401: When establishing a PDU session, send the identifier of the currently connected access device to the core network;

Step S402: Receive the IP address assigned by the core network, the core network selects the IP address from the sub-IP pool corresponding to the access device, and the sub-IP pool includes a plurality of IP addresses;

Step S403: Send an IP packet, the IP packet includes the target address of the target user equipment, so that the access device that receives the IP packet associates the target address with each IP address in the sub-IP pool corresponding to the access device The addresses are matched to obtain a matching result, and it is determined whether to route the IP packet locally according to the matching result.

In the embodiment of the present invention, the user equipment may carry the identifier of the currently connected access device, such as the identifier of the eRG, to the core network when establishing the PDU session. So that the core network allocates an IP address for the user equipment from the sub-IP pool corresponding to the access equipment indicated by the identifier of the access equipment.

When the user equipment sends the IP packet, it carries the target address of the target user equipment. The IP address of the target user equipment is also allocated by the core network in the above manner. Through the above method, the access device can confirm according to the IP address of the user equipment whether it is the user equipment connected to it, so as to determine whether the local routing of the data packet can be performed.

In a specific application scenario of the present invention, please refer to FIG. 5 , which shows a network architecture diagram of a local area network.

In the local area network shown in Fig. 5, multiple user equipments UE1, UE2, UE3 and UE4 are included. UE1 and UE2 access station PRAS1, and UE3 and UE4 access station PRAS1. Site PRAS1 and site PRAS2 are connected to the home gateway eRG1. The home gateway eRG1 accesses the core network (not shown in the figure) through the upper layer network node Node1.

Specifically, when the home gateway eRG1 registers with the core network, it reports its capabilities to the core network (such as NEF), including but not limited to the maximum number of supported PUD sessions, the maximum number of 5G LAN PDU sessions, etc. Based on the capabilities of the eRG, the core network can select a part of the IP pool allocated to the UPF as the sub-IP pool dedicated to the eRG. The core network notifies the corresponding home gateway eRG1 of the selected sub-IP pool.

When the UE establishes a PDU session, it carries the corresponding home gateway eRG ID. The core network, such as the Session Management Function (SMF), when assigning an IP address to an established PDU session, selects an IP from the corresponding sub-IP pool for a PDU session that allows local routing and passes through a specific eRG ID address.

When the IP packet sent by the UE passes through the home gateway eRG1, if the target address is in the corresponding sub-IP pool, the home gateway eRG1 performs local routing; otherwise, the home gateway eRG1 forwards it to the upper-level routing node Node1, and the home gateway eRG1 routes locally The specific rules are formulated by the home gateway eRG1. The core network can re-allocate the sub-IP pool according to the change of the UPF IP pool and the load of the UPF, and notify the corresponding home gateway eRG1.

For example, the core network allocates sub-IP pools [10.1.0.23, 10.1.0.24, 10.1.0.27, 10.1.0.28] for the home gateway eRG1. The core network allocates IP address 10.1.0.23 to UE1, allocates IP address 10.1.0.24 to UE2, allocates IP address 10.1.0.27 to UE3, and allocates IP address 10.1.0.28 to UE4. When UE1 has an IP packet to send to UE3, the IP packet carries a target address of 10.1.0.27. The IP packet is transmitted to the home gateway eRG1 through the site PRAS1. When the IP packet reaches the home gateway eRG1, the home gateway eRG1 judges that the target address 10.1.0.27 exists in the sub-IP pool, and then the home gateway eRG1 transmits the IP packet to the UE3 through the site PRAS2. Local routing within the LAN without going through the core network. It should be noted that the IP address here is only an example and does not represent a real IP address.

It should be noted that, for the sites PRAS1 and PRAS2, there is no need to route data packets according to IP addresses. Specifically, when an IP packet arrives, if the IP packet is an uplink data packet, PRAS1 and PRAS2 directly forward the data packet to the home gateway eRG1; For example, Cell-Radio Network Temporary Identifier (C-RNTI), etc.), then PRAS1 and PRAS2 directly forward the data packet to the corresponding UE.

Please refer to FIG. 6, the embodiment of the present invention also discloses a data routing device 60, the data routing device 60 includes:

A sub-IP pool receiving module 601, configured to receive a sub-IP pool allocated from the core network, the sub-IP pool including a plurality of IP addresses;

The IP packet receiving module 602 is configured to receive an IP packet from the user equipment, the IP packet includes a target address of the target user equipment, and the target address is selected from the sub-IP corresponding to the access device connected to the target user equipment pool;

A matching module 603, configured to match the target address with each IP address in the sub-IP pool to obtain a matching result;

A routing module 604, configured to determine whether to route the IP packet locally according to the matching result.

The data routing device 60 in the embodiment of the present invention may correspond to an access device, such as a residential gateway (Residential Gateway, RG), an evolved residential gateway (Evolved Residential Gateway, eRG), a pre-wireless access station/residential wireless access network (Premises Radio Access Station, PRAS), etc., chips with data routing functions, such as SOC (System-On-a-Chip, system on chip), baseband chips, etc.; or corresponding to access devices that include data routing functions A chip module; or corresponds to a chip module with a chip with a data processing function, or corresponds to an access device.

Please refer to FIG. 7, the embodiment of the present invention also discloses a data routing device 70, the data routing device 70 includes:

The sub-IP pool allocation module 701 is configured to allocate a sub-IP pool for each access device, the sub-IP pool includes a plurality of IP addresses, and the IP addresses in the sub-IP pools corresponding to different access devices do not overlap;

The IP address allocation module 702 is configured to select an IP address from a sub-IP pool corresponding to the access device according to the access device connected to the user equipment to allocate to the user equipment when the user equipment establishes a PDU session, wherein, The IP packet sent by each user equipment includes the target address of the target user equipment, so that the access device that receives the IP packet matches the target address with each IP address in the sub-IP pool corresponding to the access device , to obtain a matching result, and determine whether to route the IP packet locally according to the matching result.

The data routing device 70 in the embodiment of the present invention may correspond to a chip with a data routing function in the core network equipment, such as a SOC (System-On-a-Chip, system on chip), a baseband chip, etc.; A chip module with data routing function; or corresponding to a chip module with a data processing function chip, or corresponding to a core network device.

Please refer to FIG. 8, the embodiment of the present invention also discloses a data routing device 80, the data routing device 80 includes:

An identification sending module 801, configured to send the identification of the currently connected access device to the core network when establishing a PDU session;

The IP address receiving module 802 is configured to receive the IP address assigned by the core network, the core network selects the IP address from the sub-IP pool corresponding to the access device, and the sub-IP pool includes a plurality of IP addresses;

The IP packet sending module 803 is configured to send an IP packet, the IP packet includes a target address of the target user equipment, so that the access device that receives the IP packet associates the target address with the address corresponding to the access device Each IP address in the sub-IP pool is matched to obtain a matching result, and it is determined whether to route the IP packet locally according to the matching result.

The data routing device 80 in the embodiment of the present invention may correspond to a chip with a data routing function in the user equipment, such as a SOC (System-On-a-Chip, system on chip), a baseband chip, etc.; A chip module with a routing function; or corresponding to a chip module with a chip with a data processing function, or corresponding to a user equipment.

For more details about the working principles and working methods of the data routing device 60 , the data routing device 70 and the data routing device 80 , reference may be made to the relevant descriptions in FIGS. 2 to 5 , which will not be repeated here.

Regarding each device described in the above embodiments, each module/unit contained in the product may be a software module/unit, or a hardware module/unit, or may be partly a software module/unit and partly a hardware module/unit. . For example, for each device or product applied to or integrated into a chip, each module/unit contained therein may be realized by hardware such as a circuit, or at least some modules/units may be realized by a software program, and the software program Running on the integrated processor inside the chip, the remaining (if any) modules/units can be realized by means of hardware such as circuits; They are all realized by means of hardware such as circuits, and different modules/units can be located in the same component (such as chips, circuit modules, etc.) or different components of the chip module, or at least some modules/units can be realized by means of software programs, The software program runs on the processor integrated in the chip module, and the remaining (if any) modules/units can be realized by hardware such as circuits; /Units can be realized by means of hardware such as circuits, and different modules/units can be located in the same component (such as chips, circuit modules, etc.) or different components in the terminal, or at least some modules/units can be implemented in the form of software programs Realization, the software program runs on the processor integrated in the terminal, and the remaining (if any) modules/units can be implemented by means of hardware such as circuits.

The embodiment of the present invention also discloses a storage medium. The storage medium is a computer-readable storage medium on which a computer program is stored. When the computer program runs, the computer program shown in FIG. 2, FIG. The steps of the data routing method. The storage medium may include ROM, RAM, magnetic or optical disks, and the like. The storage medium may also include a non-volatile memory (non-volatile) or a non-transitory (non-transitory) memory, and the like.

The embodiment of the present invention also discloses an access device. The access device may include a memory and a processor, and the memory stores a computer program that can run on the processor. When the processor runs the computer program, it can execute the steps of the data routing method shown in FIG. 2 . The access device includes but is not limited to a network node (also called an access device) side in a local area network, such as a residential gateway (Residential Gateway, RG), an evolved residential gateway (Evolved Residential Gateway, eRG), front wireless Access station/resident wireless access network (Premises Radio Access Station, PRAS), etc.

The embodiment of the present invention also discloses a core network device. The core network device may include a memory and a processor, and the memory stores a computer program that can run on the processor. When the processor runs the computer program, it can execute the steps of the data routing method shown in FIG. 3 .

The embodiment of the present invention also discloses a user equipment. The user equipment may include a memory and a processor, and a computer program that can run on the processor is stored in the memory. When the processor runs the computer program, it can execute the steps of the data routing method shown in FIG. 4 . The user equipment includes, but is not limited to, terminal equipment such as mobile phones, computers, tablet computers, printers, smart home equipment, and sensor equipment.

The Fangming technical solution is also applicable to different network architectures, including but not limited to relay network architecture, dual-link architecture, Vehicle-to-Everything (vehicle-to-everything communication) architecture and other architectures.

The core network described in the embodiment of the present application may be an evolved packet core network (evolved packet core, EPC for short), a 5G Core Network (5G core network), or a new core network in a future communication system. The 5G Core Network is composed of a group of devices, and implements access and mobility management functions (Access and Mobility Management Function, AMF), and provides functions such as data packet routing and forwarding, and QoS (Quality of Service) management. User plane function (User Plane Function, UPF), session management function (Session Management Function, SMF) that provides functions such as session management, IP address allocation and management, etc. EPC can be composed of MME that provides functions such as mobility management and gateway selection, Serving Gateway (S-GW) that provides functions such as data packet forwarding, and PDN Gateway (P-GW) that provides functions such as terminal address allocation and rate control.

The base station (base station, BS for short) in the embodiment of the present application may also be referred to as a base station device, and is a device deployed in a radio access network (RAN) to provide a wireless communication function. For example, the equipment providing base station function in 2G network includes base wireless transceiver station (English: base transceiver station, referred to as BTS), the equipment providing base station function in 3G network includes Node B (NodeB), and the equipment providing base station function in 4G network Including evolved Node B (evolved NodeB, eNB), in wireless local area networks (wireless local area networks, referred to as WLAN), the equipment that provides base station functions is the access point (access point, referred to as AP), 5G new wireless (New Radio , referred to as NR), the device gNB that provides base station functions, and the node B (ng-eNB) that continues to evolve, in which gNB and the terminal use NR technology for communication, and the ng-eNB and the terminal use E-UTRA (Evolved Universal Terrestrial Radio Access) technology for communication, both gNB and ng-eNB can be connected to the 5G core network. The base station in the embodiment of the present application also includes devices that provide base station functions in future new communication systems, and the like.

The base station controller in the embodiment of the present application is a device for managing base stations, such as a base station controller (BSC for short) in a 2G network and a radio network controller (radio network controller, RNC for short) in a 3G network. ), can also refer to the device for controlling and managing the base station in the new communication system in the future.

The network-side network in the embodiment of the present invention refers to a communication network that provides communication services for terminals, including a base station of a wireless access network, a base station controller of the wireless access network, and equipment on the core network side.

The terminal in the embodiment of the present application may refer to various forms of user equipment (user equipment, referred to as UE), access terminal, user unit, user station, mobile station, mobile station (mobile station, built as MS), remote station, remote terminal, mobile device, user terminal, terminal equipment, wireless communication device, user agent, or user device. The terminal device can also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), Handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in future 5G networks or future evolution of public land mobile communication networks (Public Land Mobile Network, referred to as PLMN), etc., which are not limited in this embodiment of the present application.

The embodiment of this application defines the one-way communication link from the access network to the terminal as the downlink, the data transmitted on the downlink is downlink data, and the transmission direction of the downlink data is called the downlink direction; The one-way communication link is an uplink, the data transmitted on the uplink is uplink data, and the transmission direction of the uplink data is called the uplink direction.

It should be understood that the term "and/or" in this article is only an association relationship describing associated objects, which means that there may be three relationships, for example, A and/or B may mean: A exists alone, and A and B exist at the same time , there are three cases of B alone. In addition, the character "/" in this article indicates that the associated objects are an "or" relationship.

"Multiple" appearing in the embodiments of the present application means two or more.

The first, second, etc. descriptions that appear in the embodiments of this application are only for illustration and to distinguish the description objects. Any limitations of the examples.

The "connection" in the embodiment of the present application refers to various connection methods such as direct connection or indirect connection to realize communication between devices, which is not limited in the embodiment of the present application.

It should be understood that, in the embodiments of the present application, the processor may be a central processing unit (CPU for short), and the processor may also be other general-purpose processors, digital signal processors (digital signal processor, DSP for short) , application specific integrated circuit (ASIC for short), off-the-shelf programmable gate array (field programmable gate array, FPGA for short) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.

The above-mentioned embodiments may be implemented in whole or in part by software, hardware, firmware or other arbitrary combinations. When implemented using software, the above-described embodiments may be implemented in whole or in part in the form of computer program products. The computer program product comprises one or more computer instructions or computer programs. When the computer instruction or computer program is loaded or executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website, computer, server or data center Wired or wireless transmission to another website site, computer, server or data center. It should be understood that, in various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the order of execution, and the execution order of the processes should be determined by their functions and internal logic, and should not be used in the embodiments of the present application. The implementation process constitutes any limitation.

In the several embodiments provided in this application, it should be understood that the disclosed methods, devices and systems can be implemented in other ways. For example, the device embodiments described above are only illustrative; for example, the division of the units is only a logical function division, and there may be other division methods in actual implementation; for example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may be physically included separately, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware, or in the form of hardware plus software functional units.

The above-mentioned integrated units implemented in the form of software functional units may be stored in a computer-readable storage medium. The above-mentioned software functional units are stored in a storage medium, and include several instructions to enable a computer device (which may be a personal computer, server, or network device, etc.) to execute some steps of the methods described in various embodiments of the present invention.

Although the present invention is disclosed above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so the protection scope of the present invention should be based on the scope defined in the claims.

Claims (17)

A data routing method, characterized in that, comprising: receiving a sub-IP pool allocated from the core network, the sub-IP pool including a plurality of IP addresses; Receive an IP packet from the user equipment, the IP packet includes a target address of the target user equipment, and the target address is selected from a sub-IP pool corresponding to the access device to which the target user equipment is connected; matching the target address with each IP address in the sub-IP pool to obtain a matching result; Determine whether to route the IP packet locally according to the matching result. The data routing method according to claim 1, wherein said determining whether to locally route said IP packet according to said matching result comprises: If the matching result indicates that there is an IP address matching the target address in the sub-IP pool, routing the IP packet locally; Or, if the matching result indicates that there is no IP address matching the target address in the sub-IP pool, the IP packet is forwarded to an upper-level routing node. The data routing method according to claim 1, wherein, before receiving the sub-IP pool allocated from the core network, comprising: When registering with the core network, report the ability to support the PDU session, so that the core network can allocate the sub-IP pool according to the ability to support the PDU session. The data routing method according to claim 3, wherein the ability to support PDU sessions includes the maximum number of supported PDU sessions or the maximum number of supported LAN PDU sessions, the greater the value of the maximum number, the The greater the number of IP addresses in the sub-IP pool. A data routing method, characterized in that, comprising: Assigning sub-IP pools to each access device, the sub-IP pools include multiple IP addresses, and the IP addresses in the sub-IP pools corresponding to different access devices do not overlap; When the user equipment establishes a PDU session, an IP address is selected from the sub-IP pool corresponding to the access device according to the access device connected to the user equipment and allocated to the user equipment, wherein the IP packet sent by each user equipment Including the target address of the target user equipment, for the access device receiving the IP packet to match the target address with each IP address in the sub-IP pool corresponding to the access device to obtain a matching result, and according to The matching result determines whether to route the IP packet locally. The data routing method according to claim 5, wherein when the user equipment establishes a PDU session, an IP address is selected from the sub-IP pool corresponding to the access device according to the access device connected to the user equipment Assignment to said user equipment includes: Determine whether to authorize the user equipment to perform local routing according to the service type corresponding to the PDU session, and/or determine whether to authorize the user equipment to perform local routing according to the identifier of the user equipment; When it is determined that the user equipment is authorized to perform local routing, an IP address is selected from a sub-IP pool corresponding to the access device according to the access device connected to the user equipment and allocated to the user equipment. The data routing method according to claim 5, wherein said allocating sub-IP pools for each access device comprises: Select an IP address from one or more IP pools corresponding to the current UPF to obtain sub-IP pools corresponding to each access device; Each IP address in the sub-IP pool corresponding to each access device is sent to the access device. The data routing method according to claim 7, wherein the sending each IP address in the sub-IP pool corresponding to each access device to the access device comprises: Send each IP address in the sub-IP pool corresponding to each access device to the access device one by one; Or, when the IP addresses in the sub-IP pool are consecutive in value, send the IP address with the smallest value, the IP address with the largest value and/or the total number of IP addresses in the sub-IP pool to the access device . The data routing method according to claim 5, further comprising: Monitoring the utilization rate of the IP address in the sub-IP pool corresponding to each gateway, and updating the sub-IP pool according to the utilization rate; And/or, monitor the current UPF load, and update the sub-IP pool according to the load. A data routing method, characterized in that, comprising: When establishing a PDU session, send the identification of the currently connected access device to the core network; Receive the IP address assigned by the core network, the core network selects the IP address from the sub-IP pool corresponding to the access device, and the sub-IP pool includes a plurality of IP addresses; Send an IP packet, the IP packet includes the target address of the target user equipment, so that the access device that receives the IP packet matches the target address with each IP address in the sub-IP pool corresponding to the access device , to obtain a matching result, and determine whether to route the IP packet locally according to the matching result. A data routing device, characterized in that it comprises: The sub-IP pool receiving module is used to receive the sub-IP pool allocated from the core network, and the sub-IP pool includes a plurality of IP addresses; The IP packet receiving module is configured to receive an IP packet from the user equipment, the IP packet includes a target address of the target user equipment, and the target address is selected from the sub-IP pool corresponding to the access device connected to the target user equipment ; A matching module, configured to match the target address with each IP address in the sub-IP pool to obtain a matching result; A routing module, configured to determine whether to route the IP packet locally according to the matching result. A data routing device, characterized in that it comprises: A sub-IP pool allocation module, configured to allocate a sub-IP pool for each access device, the sub-IP pool includes a plurality of IP addresses, and the IP addresses in the sub-IP pools corresponding to different access devices do not overlap; The IP address allocation module is configured to select an IP address from the sub-IP pool corresponding to the access device according to the access device connected to the user equipment to allocate to the user equipment when the user equipment establishes a PDU session, wherein each The IP packet sent by the user equipment includes the target address of the target user equipment, so that the access device that receives the IP packet matches the target address with each IP address in the sub-IP pool corresponding to the access device, to obtain a matching result, and determine whether to route the IP packet locally according to the matching result. A data routing device, characterized in that it comprises: An identification sending module, configured to send the identification of the currently connected access device to the core network when establishing a PDU session; An IP address receiving module, configured to receive an IP address assigned by the core network, the core network selects the IP address from a sub-IP pool corresponding to the access device, and the sub-IP pool includes a plurality of IP addresses; The IP packet sending module is configured to send an IP packet, and the IP packet includes a target address of the target user equipment, so that the access device that receives the IP packet associates the target address with the subclass corresponding to the access device Match each IP address in the IP pool to obtain a matching result, and determine whether to route the IP packet locally according to the matching result. A computer-readable storage medium, on which a computer program is stored, wherein, when the computer program is executed by a processor, the steps of the data routing method according to any one of claims 1 to 10 are executed. An access device, comprising a memory and a processor, the memory stores a computer program that can run on the processor, wherein the processor executes claims 1 to 4 when running the computer program The steps of any one of the data routing methods. A core network device, comprising a memory and a processor, the memory stores a computer program that can run on the processor, wherein the processor executes claims 5 to 9 when running the computer program The steps of any one of the data routing methods. A user equipment, comprising a memory and a processor, the memory stores a computer program that can run on the processor, wherein the processor executes the data described in claim 10 when running the computer program The steps of the routing method.

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