Networking structure and communication method
By using a hybrid PTN and SPN network architecture, the problem of limited 5G SPN coverage is solved, enabling the expansion of 5G services and energy conservation and emission reduction, while reducing network construction costs and energy consumption.
Patent Information
- Application Number
- CN202311456701.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-03
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2043-11-03
AI Technical Summary
The limited coverage of 5G slice packet networks (SPN) restricts the expansion of 5G services, and building new SPN networks is costly and has poor energy-saving and emission-reduction effects.
The network structure adopts a hybrid transport architecture of Packet Transport Network (PTN) and Slice Packet Network (SPN). It realizes cross-network forwarding of 5G service information through L2 and L3 tunnel links, and utilizes the PTN network to interconnect with SPN at the aggregation layer to realize the hybrid transport of 5G services on SPN and PTN networks.
It effectively reduces network investment costs, achieves energy conservation and emission reduction, meets the development needs of 5G services, reduces the construction cost of new SPN networks by about 70%, and saves about 70% of equipment energy consumption.
Smart Images
Figure CN118802812B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of communication technology, in particular to a networking structure and a communication method. BACKGROUND
[0002] 4G services are carried by traditional packet transport networks (PTN), and the PTN deployment rate of physical sites is relatively high, almost full coverage. 5G services are carried by new slicing packet networks (SPN), and the SPN deployment rate of physical sites is not high. 4G PTN and 5G SPN are two separate and independently constructed networks, and have interconnection points in the core layer, which are used to solve the X2 inter-visit traffic of 4G and 5G in the local area. The coverage range of the 5G SPN network is relatively small, which greatly limits the expansion of 5G services. For the areas where the 5G SPN is not in place, if the new 5G SPN network is adopted, a large amount of cost needs to be invested, and the energy saving and emission reduction effect is poor. SUMMARY
[0003] The present application provides a networking structure and a communication method to solve the defects that the coverage range of the 5G SPN network is relatively small, which greatly limits the expansion of 5G services, and for the areas where the 5G SPN is not in place, if the new 5G SPN network is adopted, the investment cost is high, and the energy saving and emission reduction effect is poor.
[0004] The present application provides a networking structure, comprising: an access layer L2 node of a packet transport network (PTN), a convergence layer L2 node of the PTN, a convergence layer L3 node of a slicing packet network (SPN), and a core layer L3 node of the SPN, wherein the access layer L2 node of the PTN is interconnected with a 5G base station side BBU according to VLAN identification, and is used to receive 5G service information sent by the 5G base station side BBU; the access layer L2 node of the PTN communicates with the convergence layer L2 node of the PTN through an L2 tunnel link; the convergence layer L2 node of the PTN is interconnected with the convergence layer L3 node of the SPN according to VLAN and IP identification, and is used to realize cross-network forwarding of the 5G service information; the convergence layer L3 node of the SPN communicates with the core layer L3 node of the SPN through an L3 tunnel link; and the core layer L3 node of the SPN is interconnected with the 5G core network according to IP identification, and is used to send the 5G service information to the 5G core network.
[0005] According to the networking structure provided by the application, the convergence layer L2 node of the PTN is interconnected with the convergence layer L3 node of the SPN according to VLAN and IP, comprising: the first LAG port of the convergence layer L2 node of the PTN and the second LAG port of the convergence layer L3 node of the SPN are interconnected according to VLAN and IP; wherein the first LAG port aggregates a plurality of physical ports of the convergence layer L2 node of the PTN; and the second LAG port aggregates a plurality of physical ports of the convergence layer L3 node of the SPN.
[0006] According to the networking structure provided by the application, the convergence layer L3 node of the SPN communicates with the core layer L3 node of the SPN through an L3 tunnel link, comprising: the second LAG port of the convergence layer L3 node of the SPN communicates with the network exit of the core layer L3 node of the SPN through an L3 tunnel link.
[0007] According to the networking structure provided by the application, the core layer L3 node of the SPN is interconnected with the 5G core network according to IP, comprising: the network exit of the core layer L3 node of the SPN is interconnected with the interface of the 5G core network according to IP.
[0008] According to the networking structure provided by the application, the access layer L2 node of the PTN communicates with the convergence layer L2 node of the PTN through an L2 tunnel link, comprising: the service interface of the access layer L2 node of the PTN communicates with the first LAG port of the convergence layer L2 node of the PTN through an L2 tunnel link.
[0009] The application further provides a communication method, comprising:
[0010] The access layer L2 node of the packet transmission network (PTN) receives 5G service information transmitted by a 5G base station side BBU;
[0011] An L2 tunnel link is created between the access layer L2 node of the PTN and the convergence layer L2 node of the PTN, and the 5G service information is transmitted to the convergence layer L2 node of the PTN through the L2 tunnel link;
[0012] The convergence layer L2 node of the PTN forwards the 5G service information to the convergence layer L3 node of the slice packet network (SPN);
[0013] An L3 tunnel link is created between the convergence layer L3 node of the SPN and the core layer L3 node of the SPN, and the 5G service information is forwarded to the core layer L3 node of the SPN through the L3 tunnel link;
[0014] The core layer L3 node of the SPN forwards the 5G service information to a 5G core network.
[0015] According to the communication method provided by the application, the aggregation layer L2 node of the PTN forwards the 5G service information to the aggregation layer L3 node of the SPN, comprising:
[0016] connecting the first LAG port of the aggregation layer L2 node of the PTN and the second LAG port of the aggregation layer L3 node of the SPN;
[0017] the aggregation layer L2 node of the PTN forwards the 5G service information to the second LAG port of the aggregation layer L3 node of the SPN through the first LAG port;
[0018] wherein the first LAG port of the aggregation layer L2 node of the PTN and the second LAG port of the aggregation layer L3 node of the SPN are interconnected according to VLAN and IP.
[0019] According to the communication method provided by the application, the L3 tunnel link is created between the aggregation layer L3 node of the SPN and the core layer L3 node of the SPN, comprising:
[0020] establishing an L3 tunnel link from the second LAG port of the aggregation layer L3 node of the SPN to the network exit of the core layer L3 node of the SPN.
[0021] According to the communication method provided by the application, the L3 core layer of the SPN forwards the 5G service information to the 5G core network, comprising:
[0022] interworking the routing between the network exit of the core layer L3 node of the SPN and the interface of the 5G core network;
[0023] the network exit of the core layer L3 node of the SPN forwards the 5G service information to the interface of the 5G core network.
[0024] According to the communication method provided by the application, the L2 tunnel link is created between the access layer L2 node of the PTN and the aggregation layer L2 node of the PTN, and the 5G service information is sent to the aggregation layer L2 node of the PTN through the L2 tunnel link, comprising:
[0025] establishing an L2 tunnel link from the service interface of the access layer L2 node of the PTN to the first LAG port of the aggregation layer L2 node of the PTN;
[0026] the service interface of the access layer L2 node of the PTN sends the 5G service information to the first LAG port of the aggregation layer L2 node of the PTN through the L2 tunnel link.
[0027] The application further provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the communication method according to any one of the above when executing the program.
[0028] The application further provides a non-transitory computer readable storage medium, which stores a computer program, wherein the computer program is executed by a processor to implement the communication method according to any one of the above.
[0029] The application further provides a computer program product, comprising a computer program, wherein the computer program is executed by a processor to implement the communication method according to any one of the above.
[0030] In the application, the networking structure comprises an access layer L2 node of a packet transport network (PTN), a convergence layer L2 node of the PTN, a convergence layer L3 node of a slice packet network (SPN), and a core layer L3 node of the SPN, wherein the access layer L2 node of the PTN is interconnected with a baseband unit (BBU) on a 5G base station side and is configured to receive 5G service information transmitted by the BBU on the 5G base station side; the access layer L2 node of the PTN communicates with the convergence layer L2 node of the PTN through an L2 tunnel link; the convergence layer L2 node of the PTN is interconnected with the convergence layer L3 node of the SPN and is configured to implement cross-network forwarding of the 5G service information; the convergence layer L3 node of the SPN communicates with the core layer L3 node of the SPN through an L3 tunnel link; and the core layer L3 node of the SPN is interconnected with a 5G core network and is configured to transmit the 5G service information to the 5G core network. In this way, the PTN network is utilized by the base station side, the PTN and the SPN are interconnected at the convergence layer, and the SPN is utilized above, so that the 5G service can be carried on the SPN and the PTN network in a mixed manner, the network investment cost can be effectively reduced, energy saving and emission reduction can be achieved, and the demand for the development of the 5G service can be met. BRIEF DESCRIPTION OF DRAWINGS
[0031] In order to more clearly illustrate the technical solutions in the application or the prior art, the following will briefly introduce the drawings needed in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.
[0032] Figure 1 The schematic diagram of the networking structure provided by the embodiment of the application is shown in the figure.
[0033] Figure 2 The flowchart of the communication method provided by the embodiment of the application is shown in the figure.
[0034] Figure 3 The service flowchart of the SPN and the PTN network mixed carrying provided by the embodiment of the application is shown in the figure. DETAILED DESCRIPTION
[0035] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be described clearly and completely below with reference to the drawings in the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the protection scope of the present application.
[0036] In order to solve the problems in the related art, the embodiments of the present application provide a networking structure and a communication method.
[0037] Figure 1 A schematic diagram of the networking structure provided by the embodiments of the present application is shown in FIG. 1, which includes an access layer L2 node of a packet transport network (PTN), a convergence layer L2 node of the PTN, a convergence layer L3 node of a slice packet network (SPN), and a core layer L3 node of the SPN. Figure 1
[0038] The access layer L2 node of the PTN is interconnected with a building base band unit (BBU) on the 5G base station side, and is configured to receive 5G service information transmitted by the BBU on the 5G base station side.
[0039] The access layer L2 node of the PTN communicates with the convergence layer L2 node of the PTN through an L2 tunnel link.
[0040] The convergence layer L2 node of the PTN is interconnected with the convergence layer L3 node of the SPN, and is configured to implement cross-network forwarding of the 5G service information.
[0041] The convergence layer L3 node of the SPN communicates with the core layer L3 node of the SPN through an L3 tunnel link.
[0042] The core layer L3 node of the SPN is interconnected with the 5G core network, and is configured to transmit the 5G service information to the 5G core network.
[0043] It should be noted that the networking structure provided by the present application is suitable for a site in the access layer base station which is only covered by the PTN network and does not deploy the SPN. The base station side utilizes the PTN network, and interconnects the PTN and the SPN at the convergence layer, and converges the above utilization of the SPN, so as to implement hybrid bearing of the 5G service on the SPN and the PTN network, which can effectively reduce the network investment cost, realize energy saving and emission reduction, and meet the demand of the development of the 5G service.
[0044] As shown in FIG. 1, the networking structure includes an access layer L2 node of a packet transport network (PTN), a convergence layer L2 node of the PTN, a convergence layer L3 node of a slice packet network (SPN), and a core layer L3 node of the SPN. Figure 1 As shown, the 5G base station-side BBU accesses the PTN through the access layer L2 node. The access layer L2 PTN ring is connected to the aggregation layer L2 PTN ring. At the aggregation layer, an interconnection point between L2PTN and L3 SPN is established (multi-port UNI LAG mode, such as...). Figure 1 As shown in Figure ①, the aggregation L3 SPN ring is connected to the backbone L3 SPN ring, and the backbone L3 SPN ring is connected to the core L3 SPN ring. The core L3 SPN establishes a communication interconnection point with the 5G core network for interoperability. Specifically, the access layer L2 node of the PTN is a node on the access layer L2 PTN ring, the aggregation layer L2 node of the PTN is a node on the aggregation layer L2 PTN ring, the aggregation layer L3 node of the SPN is a node on the aggregation L3 SPN ring, and the core layer L3 node of the SPN is a node on the core L3 SPN ring.
[0045] The L2 node of the PTN access layer is interconnected with the BBU on the 5G base station side. The BBU on the 5G base station side sends 5G service information to the L2 node of the PTN access layer, and the L2 node of the PTN access layer receives the 5G service information sent by the BBU on the 5G base station side.
[0046] Furthermore, the PTN access layer L2 node interconnects with the 5G base station-side BBU via optical interface according to the Virtual Local Area Network (VLAN) identification method.
[0047] VLAN is a technology that divides a physical network into multiple logically independent virtual networks. Each VLAN can contain a group of network devices with common characteristics, regardless of their physical location in the topology. VLANs are not limited by physical location and can span different switches and routers.
[0048] There are many ways to identify VLANs, among which the following are common: MAC address-based segmentation; IP address-based segmentation; and port-based segmentation.
[0049] The access layer L2 node of the PTN communicates with the aggregation layer L2 node of the PTN via an L2 tunnel link. The access layer L2 node of the PTN is used to send 5G service information to the aggregation layer L2 node of the PTN.
[0050] The L2 tunnel link is a link that communicates using an L2 tunneling protocol. The L2 tunneling protocol (L2TP) is a commonly used virtual private network (VPN) protocol that is used to create secure, encrypted communication tunnels to protect the security of data during network communication. The L2TP protocol encapsulates data packets in two protocols: the point-to-point protocol (PPP) and the L2TP itself, forming a PPP / L2TP data packet. The PPP / L2TP data packet uses an encryption algorithm to protect the data during transmission, thereby ensuring the integrity and confidentiality of the data during transmission. The L2TP protocol can establish a secure connection through public networks such as the Internet, meeting the needs of remote users accessing internal enterprise network resources. At the same time, since the L2TP protocol can be used in combination with other protocols (such as IPSec), it can also provide higher levels of security protection.
[0051] The aggregation layer L2 node of the PTN is interconnected with the aggregation layer L3 node of the SPN, and the aggregation layer L2 node of the PTN sends the 5G service information to the aggregation layer L3 node of the SPN, thereby realizing cross-network forwarding of the 5G service information.
[0052] Specifically, a multi-port UNI LAG mode is used to establish a communication interconnection point of L2 PTN and L3 SPN at the aggregation layer, as shown in ① of Figure 1 .
[0053] At the aggregation layer, the SPN and the PTN are connected using a UNI LAG (Link Aggregation Group), and N 10GE physical optical ports are bundled in the LAG group (N≧2, as shown in ① of Figure 1 ). The 10GE physical optical port is a fiber interface, where 10GE refers to the port rate, which can reach 10 G.
[0054] That is, the technology of combining multiple physical ports or links for use in the network, and the aggregated logical port or link is the sum of the bandwidth of all member group ports or links, and can also provide disaster recovery reliability for network ports or links. If any one or more physical ports or links in the aggregated member group are unexpectedly interrupted, the bandwidth is only reduced to the sum of the bandwidth of all normal members, and the network port or link will not be completely interrupted. At the aggregation layer, the SPN and the PTN are connected using a UNI LAG (Link Aggregation Group), that is, multiple physical ports or links are logically combined into a single virtual interface at the aggregation layer, without the need to create a separate logical channel for each physical connection, thereby improving bandwidth, increasing fault tolerance, and improving reliability.
[0055] Further, the aggregation layer L2 node of the PTN is interconnected with the aggregation layer L3 node of the SPN according to VLAN and IP identification (5G service information is encapsulated therein).
[0056] The aggregation layer L3 node of the SPN communicates with the core layer L3 node of the SPN through an L3 tunnel link.
[0057] The aggregation layer L3 node of the SPN is configured to perform backhaul convergence of the 5G service information and send the 5G service information to the core layer L3 node of the SPN.
[0058] The L3 tunnel link is a link for communication using an L3 tunnel protocol. The L3 tunnel protocol refers to a technology for constructing a virtual private network (VPN) in an IP network. It can enable devices in different geographical locations or different subnets to be connected to a virtual network through a public network, as if they are on the same local area network. The L3 tunnel generally uses a tunnel protocol (such as IPSec, GRE, etc.) to establish a logical tunnel between two network nodes, and transmits encrypted data packets in the tunnel. In the L3 tunnel, the source host encapsulates the data packet into a tunnel encapsulation packet and adds additional header information to it to become a new IP packet. Then, the tunnel encapsulation packet is sent to the public network where the target host is located and transmitted to the target host through the network. The target host receives the tunnel encapsulation packet, decapsulates it and restores it to the original data packet, and then delivers it to the target host application program.
[0059] The core layer L3 node of the SPN is interconnected with the 5G core network and configured to send the 5G service information to the 5G core network.
[0060] Specifically, the network egress of the core layer L3 node of the SPN and the interface of the 5G core network are mutually routed.
[0061] The network egress of the core layer L3 node of the SPN forwards the 5G service information to the interface of the 5G core network.
[0062] In the embodiment of the present application, the networking structure comprises: an access layer L2 node of a packet transport network (PTN), a convergence layer L2 node of the PTN, a convergence layer L3 node of a slice packet network (SPN), and a core layer L3 node of the SPN, wherein the access layer L2 node of the PTN is interconnected with a 5G base station side BBU, and is configured to receive 5G service information transmitted by the 5G base station side BBU; the access layer L2 node of the PTN communicates with the convergence layer L2 node of the PTN through an L2 tunnel link; the convergence layer L2 node of the PTN is interconnected with the convergence layer L3 node of the SPN, and is configured to realize cross-network forwarding of the 5G service information; the convergence layer L3 node of the SPN communicates with the core layer L3 node of the SPN through an L3 tunnel link; and the core layer L3 node of the SPN is interconnected with a 5G core network, and is configured to transmit the 5G service information to the 5G core network. In this way, the base station side utilizes the PTN network, the PTN and the SPN are interconnected at the convergence layer, and the SPN is utilized above, so that the 5G service can be carried on the SPN and the PTN network in a mixed manner, the network investment cost can be effectively reduced, energy saving and emission reduction can be realized, and the demand for the development of the 5G service can be met.
[0063] In some embodiments, the interconnection between the convergence layer L2 node of the PTN and the convergence layer L3 node of the SPN comprises:
[0064] The first LAG port of the convergence layer L2 node of the PTN and the second LAG port of the convergence layer L3 node of the SPN are interconnected according to VLAN and IP identification;
[0065] The first LAG port of the convergence layer L2 node of the PTN aggregates a plurality of physical ports of the convergence layer L2 node of the PTN, and the second LAG port of the convergence layer L3 node of the SPN aggregates a plurality of physical ports of the convergence layer L3 node of the SPN.
[0066] It can be understood that the first LAG port of the convergence layer L2 node of the PTN aggregates a plurality of physical ports of the convergence layer L2 node of the PTN, and the second LAG port of the convergence layer L3 node of the SPN aggregates a plurality of physical ports of the convergence layer L3 node of the SPN, and is configured to realize cross-network forwarding of the 5G service information.
[0067] The VLAN and IP identification means that both the VLAN identification and the IP identification need to be performed. The IP identification means matching an IP address, and if the matching is successful, communication can be performed.
[0068] In the embodiment of the present application, the L2 PTN and the L3 SPN communication interconnection point is established at the convergence layer by using the LAG mode of the multi-port, cross-network forwarding of the 5G service information is realized, the 5G service can be carried on the SPN and the PTN network in a mixed manner, the network investment cost can be effectively reduced, energy saving and emission reduction can be realized, and the demand for the development of the 5G service can be met.
[0069] In some embodiments, the aggregation layer L3 node of the SPN communicates with the core layer L3 node of the SPN through an L3 tunnel link, including:
[0070] The second LAG port of the aggregation layer L3 node of the SPN communicates with the network exit of the core layer L3 node of the SPN through an L3 tunnel link.
[0071] Specifically, the second LAG port of the aggregation layer L3 node of the SPN communicates with the network exit of the core layer L3 node of the SPN through an L3 tunnel link, for transmitting 5G service information to the network exit of the core layer L3 node of the SPN, which is connected to the 5G core network, so that the 5G service can be mixed carried on the SPN and the PTN network, which can effectively reduce the network investment cost, realize energy saving and emission reduction, and meet the demand of 5G service development.
[0072] In some embodiments, the core layer L3 node of the SPN is interconnected with the 5G core network, including:
[0073] The network exit of the core layer L3 node of the SPN is interconnected with the interface of the 5G core network according to IP identification.
[0074] Specifically, the network exit of the core layer L3 node of the SPN and the interface of the 5G core network are mutually matched in routing; the network exit of the core layer L3 node of the SPN forwards the 5G service information to the interface of the 5G core network, so as to realize the transmission of 5G service data of the base station side BBU to the 5G core network, which can effectively reduce the network investment cost, realize energy saving and emission reduction, and meet the demand of 5G service development.
[0075] In some embodiments, the access layer L2 node of the PTN communicates with the aggregation layer L2 node of the PTN through an L2 tunnel link, including:
[0076] The service interface of the access layer L2 node of the PTN communicates with the first LAG port of the aggregation layer L2 node of the PTN through an L2 tunnel link.
[0077] The embodiment of the application realizes end-to-end transmission of 5G service information through an L2 tunnel link.
[0078] Figure 2 The flowchart of the communication method provided by the embodiment of the application is shown in Figure 2 The communication method includes:
[0079] Step 200, the access layer L2 node of the packet transmission network PTN receives 5G service information sent by the 5G base station side BBU;
[0080] The access layer L2 node of the PTN is interconnected with a 5G base station side building base band unit (BBU) for receiving 5G service information sent by the 5G base station side BBU.
[0081] Step 201, creating an L2 tunnel link between the access layer L2 node of the PTN and the aggregation layer L2 node of the PTN, and sending the 5G service information to the aggregation layer L2 node of the PTN through the L2 tunnel link;
[0082] Wherein, the understanding of the L2 tunnel link can refer to the description in the foregoing networking structure embodiment, which will not be repeated here.
[0083] Step 202, the aggregation layer L2 node of the PTN forwards the 5G service information to the aggregation layer L3 node of the slice packet network (SPN);
[0084] Wherein, the first LAG port of the aggregation layer L2 node of the PTN and the second LAG port of the aggregation layer L3 node of the SPN are interconnected according to VLAN and IP identification;
[0085] Wherein, the first LAG port aggregates multiple physical ports of the aggregation layer L2 node of the PTN; and the second LAG port aggregates multiple physical ports of the aggregation layer L3 node of the SPN.
[0086] It can be understood that the first LAG port of the aggregation layer L2 node of the PTN aggregates multiple physical ports of the aggregation layer L2 node of the PTN, and the second LAG port of the aggregation layer L3 node of the SPN aggregates multiple physical ports of the aggregation layer L3 node of the SPN, for realizing cross-network forwarding of the 5G service information.
[0087] Wherein, VLAN and IP identification means that both VLAN identification and IP identification are required. IP identification means matching IP address, and if the matching is successful, communication can be performed.
[0088] Step 203, creating an L3 tunnel link between the aggregation layer L3 node of the SPN and the core layer L3 node of the SPN, and forwarding the 5G service information to the core layer L3 node of the SPN through the L3 tunnel link;
[0089] Wherein, the understanding of the L3 tunnel link can refer to the description in the foregoing networking structure embodiment, which will not be repeated here.
[0090] Step 204, the core layer L3 node of the SPN forwards the 5G service information to the 5G core network.
[0091] Specifically, the network exit of the core layer L3 node of the SPN is matched with the interface of the 5G core network, and the network exit of the core layer L3 node of the SPN forwards the 5G service information to the interface of the 5G core network, so that the 5G service data of the base station side BBU is transmitted to the 5G core network, the network investment cost can be effectively reduced, energy saving and emission reduction can be realized, and the demand of 5G service development can be met.
[0092] Figure 3 A service flow diagram of the SPN and the PTN network hybrid bearing provided by the embodiment of the application.
[0093] As shown in Figure 3 , the service flow of the SPN and the PTN network hybrid bearing includes the following steps:
[0094] The base station 5G BBU service is interconnected with the access layer L2 PTN in a VLAN identification manner (5G service information is encapsulated therein) and is forwarded to the access layer L2 PTN network (A\B base station service is as shown in Figure 3 ②③);
[0095] An L2 tunnel link is created between the access layer L2 PTN and the convergence layer L2 PTN, and the 5G service is transmitted to the convergence layer L2 PTN (as shown in Figure 3 ④⑤);
[0096] The convergence layer L2 PTN and the convergence layer L3 SPN are interconnected in a VLAN and IP identification manner (5G service information is encapsulated therein), and the 5G service is forwarded to the convergence layer L3 SPN (as shown in Figure 3 ①);
[0097] An L3 tunnel link (a 5G L3 VPN is constructed) is created between the convergence layer L3 SPN convergence layer and the core layer L3 SPN, and the 5G service is forwarded to the core layer L3 SPN (as shown in Figure 3 ⑥⑦);
[0098] The core layer L3 SPN and the 5G core device are interconnected in an IP identification manner (5G service information is encapsulated therein), and the 5G service is forwarded to the 5G core network (as shown in Figure 3 ⑧⑨)。
[0099] The communication method provided by the embodiment of the application is based on a transmission and bearing network of an SPN+PTN system, and is responsible for efficient transmission of 5G services across networks: the access layer L2 PTN is mainly responsible for access of 5G BBU services, 5G services are converged back to the convergence layer L2 PTN through an L2 tunnel link, a communication interconnection point is created between the convergence layer L2 PTN and the L3 SPN for cross-network forwarding of 5G services, then an L3 link tunnel is created from the convergence L3 SPN to the core L3 SPN for back convergence of 5G services, and finally a communication interconnection point is created between the core L3 SPN and the 5G core network for forwarding of 5G services between the SPN network and the 5G core network.
[0100] In some embodiments, the convergence layer L2 node of the PTN forwards the 5G service information to the convergence layer L3 node of the SPN, including:
[0101] connecting a first LAG port of the convergence layer L2 node of the PTN and a second LAG port of the convergence layer L3 node of the SPN;
[0102] the convergence layer L2 node of the PTN forwards the 5G service information to the second LAG port of the convergence layer L3 node of the SPN through the first LAG port;
[0103] wherein the first LAG port of the convergence layer L2 node of the PTN and the second LAG port of the convergence layer L3 node of the SPN are interconnected according to VLAN and IP.
[0104] In some embodiments, the L3 tunnel link is created between the convergence layer L3 node of the SPN and the core layer L3 node of the SPN, including:
[0105] establishing an L3 tunnel link from the second LAG port of the convergence layer L3 node of the SPN to a network outlet of the core layer L3 node of the SPN.
[0106] In some embodiments, the L3 core layer of the SPN forwards the 5G service information to the 5G core network, including:
[0107] interworking routing between the network outlet of the core layer L3 node of the SPN and an interface of the 5G core network;
[0108] the network outlet of the core layer L3 node of the SPN forwards the 5G service information to the interface of the 5G core network.
[0109] In some embodiments, an L2 tunnel link is created between the access layer L2 node of the PTN and the convergence layer L2 node of the PTN, and the 5G service information is sent to the convergence layer L2 node of the PTN through the L2 tunnel link, including:
[0110] establishing a L2 tunnel link from the service interface of the access layer L2 node of the PTN to the first LAG port of the aggregation layer L2 node of the PTN;
[0111] the service interface of the access layer L2 node of the PTN sends the 5G service information to the first LAG port of the aggregation layer L2 node of the PTN through the L2 tunnel link.
[0112] The specific parameter configurations in the above service flow are introduced as follows:
[0113] (1) Base station side BBU (5G wireless device):
[0114] The A base station BBU is configured with an IP address of 10.103.3.2 / 30 and a VLAN of 222 (as shown in Figure 3 ②);
[0115] The B base station BBU is configured with an IP address of 10.103.3.6 / 30 and a VLAN of 333 (as shown in Figure 3 ③);
[0116] (2) PTN network side (PTN access layer and aggregation layer):
[0117] The A base station establishes a L2 tunnel link from the PTN service port (interface with the BBU) to the LAG port of the aggregation PTN (interface with the SPN aggregation) and encapsulates the VLAN as 222 (corresponding to the VLAN of the A base station) to realize end-to-end transmission of the service (the service path is as shown in Figure 3 ④);
[0118] The B base station establishes a L2 tunnel link from the PTN service port (interface with the BBU) to the LAG port of the aggregation PTN (interface with the SPN aggregation) and encapsulates the VLAN as 333 (corresponding to the VLAN of the A base station) to realize end-to-end transmission of the service (the service path is as shown in Figure 3 ⑤).
[0119] (3) SPN network side (SPN aggregation layer, backbone layer and core layer):
[0120] The A base station service is configured with an IP address of 10.103.3.1 / 30 and a VLAN of 222 (IP and VLAN corresponding to the data of the BBU) at the aggregation SPN LAG port (interface with the aggregation PTN) and establishes a L3 tunnel link from the LAG port of the aggregation SPN (interface with the aggregation PTN) to the network outlet of the core SPN (interface with the core network, the link is included in the 5G L3 VPN) to forward the IP and other information of the wireless base station service to the network outlet of the core SPN (interface with the core network) (as shown inFigure 3 In the middle ⑥;
[0121] B base station service: configure IP address as 10.103.3.5 / 30 and VLAN as 333 (IP, VLAN and BBU data correspond) on the aggregation SPN LAG port (interface with the aggregation PTN), establish a three-layer tunnel link from the LAG port of the aggregation SPN (interface with the aggregation PTN) to the network export of the core SPN (interface with the core network, the link is included in the 5G L3 VPN), and forward the IP and other information of the wireless base station service to the network export of the core SPN (interface with the core network) (as shown in the middle ⑦). Figure 3 In the middle ⑦.
[0122] (4) Facing the core network (core SPN and 5G core network interconnection point)
[0123] A base station service: inter-match routing between the core SPN and the core network interconnection port to forward the 5G service, and ensure that the 5G core and 10.103.3.1 / 30, 10.103.3.2 / 30 can normally communicate (as shown in the middle ⑧). Figure 3 In the middle ⑧.
[0124] B base station service: inter-match routing between the core SPN and the core network interconnection port to forward the 5G service, and ensure that the 5G core and 10.103.3.5 / 30, 10.103.3.6 / 30 can normally communicate (as shown in the middle ⑨). Figure 3 In the middle ⑨.
[0125] Wherein, ① in the middle is the UNI LAG protection of the aggregation SPN and the PTN interconnection, ② and ③ are the 5G BBU and the access L2 PTN connection communication point, ④ and ⑤ are the L2 tunnel link of the access L2 PTN to the aggregation L2 PTN; ⑥ and ⑦ are the L3 tunnel link of the aggregation L3 SPN and the core L3 SPN; ⑧ and ⑨ are the connection communication point of the core SPN and the 5G core network.
[0126] The networking structure and the communication method provided by the application have the following advantages:
[0127] (1) The cost reduction and efficiency increase effect is obvious: compared with the construction cost of the traditional 5G service carried by the newly built SPN network, the network construction cost can be reduced by about 70% (access to the old PTN network);
[0128] (2) The energy saving and emission reduction effect is obvious: the new SPN scale is reduced by 70% through the scheme, and the energy consumption of the corresponding SPN equipment is saved (the annual electricity fee of a single SPN device is about 1.8 million yuan);
[0129] (Three) strong applicability: the new scheme of SPN+PTN mixed bearing 5G is adopted, the related basic network and layout are relatively mature, and the pilot application is carried out within a certain range, which has strong adaptability and popularization;
[0130] (Four) strong development: the systematic 5G service mixed bearing scheme of SPN+PTN is systematically proposed, which provides a bearing model for network transformation and development.
[0131] The device embodiments described above are only schematic, wherein the units described as separate components can or can not be physically separated, and the components displayed as units can or can not be physical units, i.e. they can be located in one place, or distributed on multiple network units. Part or all of the modules can be selected to achieve the purpose of the present embodiment scheme according to actual needs. Those skilled in the art can understand and implement it without creative labor.
[0132] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be realized by means of software and the necessary general hardware platform, and of course it can also be realized by hardware. Based on such understanding, the above technical solutions can be embodied in the form of software product, which can be stored in a computer readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., including a plurality of instructions to make a computer device (which can be a personal computer, server, or network device, etc.) execute the method described in each embodiment or some part of the embodiment.
[0133] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. A networking structure, characterized by, Comprising: an access layer L2 node of a packet transport network PTN, a convergence layer L2 node of the PTN, a convergence layer L3 node of a slice packet network SPN, and a core layer L3 node of the SPN, wherein the access layer L2 node of the PTN is interconnected with a baseband processing unit BBU on a 5G base station side for receiving 5G service information sent by the BBU on the 5G base station side; the access layer L2 node of the PTN communicates with the convergence layer L2 node of the PTN through an L2 tunnel link; the convergence layer L2 node of the PTN is interconnected with the convergence layer L3 node of the SPN for realizing cross-network forwarding of the 5G service information; the convergence layer L3 node of the SPN communicates with the core layer L3 node of the SPN through an L3 tunnel link; the core layer L3 node of the SPN is interconnected with a 5G core network for sending the 5G service information to the 5G core network; the convergence layer L2 node of the PTN is interconnected with the convergence layer L3 node of the SPN, comprising: a first LAG port of the convergence layer L2 node of the PTN and a second LAG port of the convergence layer L3 node of the SPN are interconnected according to VLAN and IP identification; wherein the first LAG port aggregates multiple physical ports of the convergence layer L2 node of the PTN; and the second LAG port aggregates multiple physical ports of the convergence layer L3 node of the SPN.
2. The networking structure of claim 1, wherein, the convergence layer L3 node of the SPN communicates with the core layer L3 node of the SPN through an L3 tunnel link, comprising: a second LAG port of the convergence layer L3 node of the SPN communicates with a network exit of the core layer L3 node of the SPN through an L3 tunnel link.
3. The networking structure of claim 1, wherein, the core layer L3 node of the SPN is interconnected with the 5G core network, comprising: a network exit of the core layer L3 node of the SPN is interconnected with an interface of the 5G core network according to IP identification.
4. The networking structure of claim 1, wherein, the access layer L2 node of the PTN communicates with the convergence layer L2 node of the PTN through an L2 tunnel link, comprising: a service interface of the access layer L2 node of the PTN communicates with a first LAG port of the convergence layer L2 node of the PTN through an L2 tunnel link.
5. A communication method based on the network configuration as claimed in claims 1 to 4, characterized in that, Comprising: an access layer L2 node of a packet transport network PTN receives 5G service information sent by a baseband processing unit BBU on a 5G base station side; an L2 tunnel link is created between the access layer L2 node of the PTN and a convergence layer L2 node of the PTN, and the 5G service information is sent to the convergence layer L2 node of the PTN through the L2 tunnel link; the convergence layer L2 node of the PTN forwards the 5G service information to a convergence layer L3 node of a slice packet network SPN; an L3 tunnel link is created between the convergence layer L3 node of the SPN and a core layer L3 node of the SPN, and the 5G service information is forwarded to the core layer L3 node of the SPN through the L3 tunnel link; the core layer L3 node of the SPN forwards the 5G service information to a 5G core network; The aggregation layer L2 node of the PTN forwards the 5G service information to the aggregation layer L3 node of the SPN, comprising: connecting the first LAG port of the aggregation layer L2 node of the PTN and the second LAG port of the aggregation layer L3 node of the SPN; the aggregation layer L2 node of the PTN forwards the 5G service information to the second LAG port of the aggregation layer L3 node of the SPN through the first LAG port; wherein the first LAG port of the aggregation layer L2 node of the PTN and the second LAG port of the aggregation layer L3 node of the SPN are interconnected according to VLAN and IP identification.
6. The communication method according to claim 5, wherein, The L3 tunnel link is created between the aggregation layer L3 node of the SPN and the core layer L3 node of the SPN, comprising: establishing an L3 tunnel link from the second LAG port of the aggregation layer L3 node of the SPN to the network exit of the core layer L3 node of the SPN.
7. The communication method according to claim 5, wherein, The L3 core layer of the SPN forwards the 5G service information to the 5G core network, comprising: interworking routing between the network exit of the core layer L3 node of the SPN and the interface of the 5G core network; the network exit of the core layer L3 node of the SPN forwards the 5G service information to the interface of the 5G core network.
8. The communication method according to claim 5, wherein, An L2 tunnel link is created between the access layer L2 node of the PTN and the aggregation layer L2 node of the PTN, and the 5G service information is sent to the aggregation layer L2 node of the PTN through the L2 tunnel link, comprising: establishing an L2 tunnel link from the service interface of the access layer L2 node of the PTN to the first LAG port of the aggregation layer L2 node of the PTN; the service interface of the access layer L2 node of the PTN sends the 5G service information to the first LAG port of the aggregation layer L2 node of the PTN through the L2 tunnel link.