Virtual-real fusion simulation method for heterogeneous communication network
By employing a simulation platform and a bandwidth-limited static routing table in heterogeneous communication networks, the problems of complex networking and difficult interoperability in multi-domain joint simulation are solved. This achieves virtual-physical interconnection and decoupling across domains, improving the simulation effect of heterogeneous networks and the service data access capability of physical devices.
Patent Information
- Application Number
- CN202511833117.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-08
- Publication Date
- 2026-03-06
AI Technical Summary
In heterogeneous communication networks, multi-domain joint simulation faces challenges such as complex networking and difficulty in interoperability, especially in cross-domain communication scenarios, where it is necessary to overcome technical barriers related to different protocols, devices, and security boundaries.
Employing a simulation platform, virtual network elements, and virtual switch hubs, the system achieves virtual network planning and management through containerized design. It uses a latency-controlled and bandwidth-limited static routing table for cross-domain communication, supports latency and bandwidth control, enables communication between virtual network elements and virtual switch hubs, and establishes interconnection between physical devices and virtual networks.
It enables virtual-physical interconnection and interoperability of multi-domain networks, supports the construction of large-scale heterogeneous communication networks, improves the decoupling of each domain and the realism of the virtual environment, and can access the business data of physical devices to verify communication quality.
Smart Images
Figure CN121619239A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to simulation technology, and more particularly to a virtual-real fusion simulation method for heterogeneous communication networks. Background Technology
[0002] Heterogeneous communication networks are complex hybrid systems that integrate multiple technologies, protocols, and devices. They include wireless links such as 5G / satellite / microwave / radio, as well as wired transmission links such as fiber optic / Ethernet, and the devices encompass terminals... Base stations, core gateways, heterogeneous servers, etc.
[0003] Heterogeneous communication networks often have cross-domain communication application scenarios. In such scenarios, it is necessary to overcome technical barriers such as different protocols, devices and security boundaries. For example, satellite and terrestrial optical networks communicate through protocol conversion gateways, and cross-domain networks need to establish interconnection channels through technologies such as boundary gateway protocols or full network deployment.
[0004] In summary, with the development of communication networks, network technologies have become more diverse and powerful. In heterogeneous communication networks, the need for multi-domain joint use is increasingly evident, as these networks contain multiple domains within a single network architecture and various different network architectures. Therefore, when conducting joint simulations of multi-domain communication systems, the independent, closed, and complex heterogeneous nature of each domain's architecture and technology presents challenges such as complex network setup and difficulties in interoperability. Summary of the Invention
[0005] To address the problems raised in the background technology, this invention discloses a virtual-physical fusion simulation method for heterogeneous communication networks, including a simulation platform, virtual network elements, and a virtual switch hub. The simulation platform implements the planning and management functions of the virtual heterogeneous communication network. The virtual network elements adopt a containerized design, possessing the same network routing protocol and link layer protocol as the physical devices, and supporting delay-controlled band-limited static routing functionality. When virtual network elements are directly connected to each other, they communicate using a routing protocol, and the delay-controlled band-limited static routes of this node are redistributed into the routing protocol. Virtual network elements communicate with the virtual switch hub using delay-controlled band-limited static routing functionality. The virtual switch hub implements Layer 2 network data forwarding functionality. The steps for establishing virtual network link relationships for cross-domain communication are as follows: Step 101: The simulation platform plans a heterogeneous communication network that includes multiple network domains; Step 102: The simulation platform identifies directly connected network elements for inter-domain communication in heterogeneous communication networks; Step 103: The simulation platform creates a virtual heterogeneous communication network. The content created in each domain includes: network elements directly connected to other network domains and a virtual switch HUB. The network elements are created using a containerized method. Once created successfully, they are virtual network elements. Step 104: Connect all virtual network elements in the domain to the virtual switch HUB; Step 105: The simulation platform generates a bandwidth-limited static routing table for each virtual network element and distributes it to the virtual network element. Step 106: The virtual network element loads and runs the extension-controlled band-limited static routing table.
[0006] The delay-controlled band-limited static routing table contains a set of delay-controlled band-limited static routing information. A set of delay-controlled band-limited static routes includes the destination address, outgoing interface and next-hop address, priority, forwarding delay, and channel bandwidth.
[0007] The difference between a delay-controlled band-limited static routing table and a regular static route is that a regular static route includes the destination address, outgoing interface and next-hop address, and priority parameters, but does not include forwarding delay and channel bandwidth parameters.
[0008] There are two modes for generating bandwidth-limited static routing tables: computational generation and digital twin mode. In computational generation mode, the simulation platform directly calculates and generates the network routing table for each virtual network element by loading a routing algorithm, and then generates the bandwidth-limited static routing table through a routing transformation algorithm. In digital twin mode, the simulation platform obtains the network routing tables of physical network elements in the heterogeneous communication network through the network interface, identifies the network routing tables of directly connected network elements between domains in the physical network element's network routing table as the network routing tables of the virtual network elements, and then generates the bandwidth-limited static routing table through a routing transformation algorithm. The steps for generating the bandwidth-limited static routing table using the routing transformation algorithm are as follows: Step 201: The virtual network element copies the cross-domain network routing table of other virtual network elements, changes the next-hop address to the address corresponding to the interconnection between the virtual network element and the HUB, and changes the outgoing interface to the interface interconnection between the virtual network element and the HUB, and combines them to form the first network routing table. Step 202: Calculate the forwarding delay and channel bandwidth between each virtual network element and other virtual network elements based on the network topology and network routing table; Step 203: Add the forwarding delay and channel bandwidth parameters to the first network routing table according to the relationship between virtual network elements, forming a delay-controlled band-limited static routing table.
[0009] The steps for data communication within a network domain are as follows: Step 301: Virtual network elements within a network domain directly receive network data from other network domains or physical devices; Step 302: Virtual network elements within the network domain forward according to the delay-controlled band-limited static routing table, including increasing the forwarding delay according to the forwarding delay of the delay-controlled band-limited static routing table, and controlling the upper limit of forwarding bandwidth using the channel bandwidth parameter; Step 303: After receiving data packets forwarded by other network elements within the same network domain, the virtual network element within the network domain forwards them according to the routing table and MAC table.
[0010] The virtual-physical interconnection and interoperability across domains adopts network-level interconnection and device-level interconnection methods. Network-level interconnection adopts the method of inter-domain interconnection. This invention focuses on the design of single-device-level virtual-physical interconnection and interoperability, and the steps are as follows: Step 401: Interconnect the physical device with the virtual switch HUB in the domain; Step 402: If the physical device is a non-routing device, no further processing is required, and the step ends; if the physical device is a routing device, configure a set of extended-range limited static routes pointing to the physical device in the virtual network element, and configure a set of regular static routes pointing to the virtual network element in the physical device.
[0011] The beneficial technical effects of this invention are as follows: A virtual-real fusion simulation method for heterogeneous communication networks has significant effects in several aspects. First, it realizes the virtual-real interconnection and interoperability simulation of multiple cross-domain networks, which can support the construction of large-scale heterogeneous communication networks. In addition, it also realizes the isolation of each domain and improves the decoupling of the independent customized design of each domain. Second, it has the ability to interconnect with physical devices, can access the service data of physical devices, and can effectively verify the realism of the virtual environment and the communication quality of actual services by carrying real service data in the virtual environment. Attached Figure Description
[0012] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate the invention and, together with the descriptions, serve to explain the invention and do not constitute an undue limitation thereof.
[0013] Appendix Figure 1 A schematic diagram of the multi-domain interconnection topology of a heterogeneous communication network; Appendix Figure 2 A schematic diagram of the interconnection topology of virtualized heterogeneous communication networks; Appendix Figure 3 A schematic diagram of the interconnection topology between a virtualized heterogeneous communication network and physical devices. Detailed Implementation
[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0015] See appendix Figure 1The diagram shows a virtual switch (HUB) for a heterogeneous communication network with multi-domain interconnection topology. Domain 1 includes A1, A2, A3, and other network elements; Domain 2 includes B1, B2, and other network elements; and Domain 3 includes C1, C2, C3, and other network elements. (See attached diagram.) Figure 1 It is a network topology planned in the simulation platform. This topology can also be obtained from an external physical communication network through a network interface to realize the digital twin function.
[0016] Appendix Figure 1 In this system, domain 1 and domain 2 are interconnected using A1 and B1, domain 2 and domain 3 are interconnected using B2 and C1, and domain 1 and domain 3 are interconnected using A3 and C3, and A2 and C2.
[0017] See appendix Figure 2 The diagram shown illustrates the interconnection topology of a virtualized heterogeneous communication network. This diagram is based on the simulation platform. Figure 1 This is a schematic diagram of a virtualized heterogeneous communication network interconnection topology, created using a multi-domain interconnection network. Domain 1 has a virtual switch hub, and A1, A2, and A3 are interconnected to this virtual switch hub. Domain 2 has a virtual switch hub, and B1 and B2 are interconnected to this virtual switch hub. Domain 3 has a virtual switch hub, and C1, C2, and C3 are interconnected to this virtual switch hub. In the simulation platform, no virtual network elements are created for non-cross-domain communication directly connected network elements within the three domain hubs.
[0018] In this invention, during the planning phase of the simulation platform, the network elements in the network domain may exceed the virtual network elements in the operational phase. This is because the planning phase includes network elements that are directly connected across network domains. The network elements in the planning phase are merely graphical representations, while the virtual network elements in operation utilize technologies such as containers and are actual existing programs. During the planning phase, the simulation platform has network routing tables for all nodes, which are generated through computation and obtained from external physical networks.
[0019] Based on the appendix Figure 2 The data communication steps within domain 3 are described in detail below: The first step is that virtual network elements within a network domain directly receive network data from other network domains or physical devices; for example, C1 receives data from B2 destined for A3. The second step involves virtual network elements within the network domain forwarding data according to the delay-controlled band-limited static routing table. This includes increasing the forwarding delay based on the delay-controlled band-limited static routing table and controlling the upper limit of the forwarding bandwidth using the channel bandwidth parameter. C1 looks up the next hop of the first route information to the A3 network segment in the delay-controlled band-limited static routing table, which is C3. The delay of the first route information is 10ms, and the bandwidth is 2MHz. C1 will then control the data sent to A3, increasing the delay by 10ms and controlling the data bandwidth to 2MHz. Third, after receiving data packets forwarded by other network elements in the same network domain, the virtual network element in the network domain forwards them according to the routing table and MAC table; C3 receives the data sent by C1, identifies the destination of the data as A3, and sends the data to A3 according to the routing information of the handshake with A3. In this process, the delay and bandwidth are not controlled.
[0020] See appendix Figure 3 As shown, this is a schematic diagram of the interconnection topology between a virtualized heterogeneous communication network and physical devices. Physical device 1 and physical device 2 are interconnected through virtual switches HUBs in domain 2 and domain 3, respectively.
[0021] When the accessed physical device is a non-routable device type, the physical device is accessed as a terminal and needs to be configured with a basic IP address. It must be in the same network segment as one of the interface addresses of C1, C2, and C3. This address can then be used to access network domain 3 and communicate normally.
[0022] When the connected physical device is a routing device, a set of extended-band-limited static routes pointing to the physical device needs to be configured in the virtual network element. This set of extended-band-limited static routes contains multiple extended-band-limited static route information to represent different network address routes. Simultaneously, a set of regular static routes pointing to the virtual network element needs to be configured in the physical device. This set of regular static routes contains regular static route information to represent different network address routes. Since both the physical device and the virtual network may have multiple network addresses, a single set of routes is used to meet the multi-address requirement.
[0023] The steps of the routing conversion algorithm for generating a delay-controlled band-limited static routing table are illustrated in detail below: Step 1: The virtual network element copies the cross-domain network routing tables of other virtual network elements, changes the next-hop address to the address corresponding to the virtual network element's interconnection with the HUB, and changes the outgoing interface to the interface connecting the virtual network element and the HUB, combining them to form the first network routing table; based on the table... Figure 2 Example of virtual network element A1 in domain 1 replicating the cross-domain network routing table of A3; Assume A3 has two network routing tables. The first table has a destination network address (C1) and a next hop (C3's interface address); the second table has a destination network address (C2) and a next hop (C3's interface address). The first network routing table formed by A1's replication also has two tables: the first table has a destination network address (C1) and a next hop (A3's interface address); the second table has a destination network address (C2) and a next hop (A3's interface address).
[0024] The second step is to calculate the forwarding delay and channel bandwidth between each virtual network element and other virtual network elements based on the network topology and network routing table. Taking the first step above as an example, the simulation platform calculates that the forwarding delay from A1 to A3 is 20ms and the channel bandwidth is 100Mbps based on the network topology and network routing table. The third step involves adding the forwarding delay and channel bandwidth parameters to the first network routing table according to the relationship between virtual network elements, thus forming a delay-controlled and band-limited static routing table. Taking the first and second steps above as examples, the two routing entries in the delay-controlled and band-limited static routing table formed by updating A1 to A3 are as follows: The first entry is the network address of destination C1, the next hop is the interface address of A3, the forwarding delay is 20ms, and the channel bandwidth is 100Mbps; the second entry is the network address of destination C2, the next hop is the interface address of A3, the forwarding delay is 20ms, and the channel bandwidth is 100Mbps.
[0025] In the process of generating a delay-controlled band-limited static routing table using the routing conversion algorithm, some virtual network elements may have multiple different exits to the same next-hop address. The virtual network elements will report this situation to the simulation platform, which will then use various sorting methods such as shortest path priority and high bandwidth priority to make a particular exit effective.
Claims
1. A virtual-real fusion simulation method for a heterogeneous communication network, characterized in that, The simulation platform, the virtual network element, and the virtual switch HUB are comprised; The simulation platform realizes the planning and management functions of the virtual network heterogeneous communication network; the virtual network element is designed in a containerized manner and has the same network routing protocol and link layer protocol as the physical device, and supports the delay control bandwidth limited static routing function; when the virtual network element is directly connected to another virtual network element, the routing protocol is used for communication, and the delay control bandwidth limited static routing of the node is redistributed into the routing protocol; the virtual network element and the virtual switch HUB communicate by using the delay control bandwidth limited static routing function; the virtual switch HUB realizes the data forwarding function of the second layer network; and the steps for establishing the virtual network link relationship across the network domains are as follows: Step 101, the simulation platform plans the heterogeneous communication network comprising multiple network domains; Step 102, the simulation platform identifies the directly connected network elements for communication between the network domains in the heterogeneous communication network; Step 103, the simulation platform creates a virtual heterogeneous communication network, wherein the contents created in each network domain comprise the network elements directly connected to other network domains and one virtual switch HUB; The network element is created in a containerized manner, and after the creation is successful, the network element becomes a virtual network element; Step 104, all the virtual network elements in the network domain are connected to the virtual switch HUB; Step 105, the simulation platform generates the delay control bandwidth limited static routing table of each virtual network element and delivers the table to the virtual network element; Step 106, the virtual network element loads and runs the delay control bandwidth limited static routing table.
2. The virtual-real fusion simulation method for a heterogeneous communication network according to claim 1, wherein, The delay control bandwidth limited static routing table comprises a set of delay control bandwidth limited static routing information, and each set of delay control bandwidth limited static routing comprises a destination address, an outgoing interface and a next hop address, a priority, a forwarding delay, and a channel bandwidth.
3. The virtual-real fusion simulation method for a heterogeneous communication network according to claim 1, characterized in that, The delay control bandwidth limited static routing table is generated in two modes, one is a calculation generation mode, and the other is a digital twin mode; in the calculation generation mode, the simulation platform directly calculates the network routing table of each virtual network element by loading a routing algorithm, and then generates the delay control bandwidth limited static routing table by using a routing conversion algorithm; In the digital twin mode, the simulation platform obtains the network routing table of the physical network element of the heterogeneous communication network through a network interface, identifies the network routing table of the directly connected network element for communication between the network domains in the network routing table of the physical network element as the network routing table of the virtual network element, and then generates the delay control bandwidth limited static routing table by using the routing conversion algorithm; the steps for generating the delay control bandwidth limited static routing table by using the routing conversion algorithm are as follows: Step 201, the virtual network element copies the network routing table of other virtual network elements across the network domains, changes the next hop address to the address of the interconnection between the other virtual network elements and the HUB, changes the outgoing interface to the interface of the interconnection between the virtual network element and the HUB, and combines to form a first network routing table; Step 202, the forwarding delay and the channel bandwidth between each virtual network element and other virtual network elements are calculated according to the network topology and the network routing table; Step 203, the forwarding delay and the channel bandwidth parameters are added to the first network routing table according to the relationship between the virtual network elements and the virtual network elements, and the delay control bandwidth limited static routing table is formed.
4. The virtual-real fusion simulation method for a heterogeneous communication network according to claim 1, wherein, The data communication steps in the network domain are as follows: Step 301, the virtual network element in the network domain directly receives network data from other network domains or physical devices; Step 302, the virtual network element in the network domain forwards according to the delay control limited static routing table, including increasing the delay according to the delay control limited static routing table, and controlling the upper limit forwarding bandwidth according to the channel bandwidth parameter; Step 303, after the virtual network element in the network domain receives the data packet forwarded by other network elements in the same network domain, the data packet is forwarded according to the routing table and the MAC table.
5. The virtual-real fusion simulation method for a heterogeneous communication network according to claim 1, wherein, The device-level virtual-real interconnection intercommunication step is: Step 401, the physical device is interconnected with the virtual switch HUB in the network domain; Step 402, if the physical device is a non-routing device, no other processing is performed, and the step is ended; if the physical device is a routing device, a set of delay control limited static routing information pointing to the physical device is configured in the virtual network element, and a set of conventional static routes pointing to the virtual network element are configured in the physical device.