5G terminal networking method based on wireless ad hoc network

Abstract

The invention discloses a 5G terminal networking method based on a wireless ad hoc network. The 5G terminal networking method comprises the following steps: S1, constructing an ad hoc network channel module of a plurality of nodes; s2, adding the ad hoc network channel module in the S1 to a user terminal; and S3, an ad hoc network channel and a 5G channel are fused, data connection of a layer 2 is realized by an ad hoc network channel module, and in a routing table corresponding to a 5G RRC layer, a relay node of the ad hoc network channel module does not report routing information, that is, actual network topology of each node is shielded, and the routing table at the core network side is kept in a star topology relationship. According to the invention, the 5G network can cover a large number of terminals in a wide area, the low-speed service of the terminals is maintained, the signal energy consumption of the 5G base station can be properly reduced, and the overall network overhead is optimized.

Description

Technical Field

[0001] The present invention relates to the technical field of 5G networking of self-organizing networks, and in particular to a 5G terminal networking method based on wireless self-organizing networks. Background Art

[0002] In order to adapt to manned / unmanned combat in multiple domains and meet the increasingly diverse needs of situational data transmission, unmanned equipment must have high-speed, low-latency, anti-destruction and anti-interference wireless communication capabilities.

[0003] At present, the NSA deployment and SA deployment communications commonly used in 5G construction rely on the operator's infrastructure to achieve signal coverage. At the same time, emergency communication vehicles are used as mobile base stations and core network facilities in field and temporary emergency scenarios to provide signals and network extensions for end users.

[0004] In scenarios without infrastructure support, such as complex and confrontational battlefield environments, the signal coverage of a single 5G base station is small, and 5G terminal users are idle in areas with low signal strength. The airborne base stations are prone to exposing their optoelectronic and electromagnetic characteristics and face a greater risk of being destroyed. Therefore, it is difficult for tactical 5G terminal users on the move to carry out continuous and stable service transmission. Summary of the invention

[0005] The present invention provides a 5G terminal networking method based on wireless ad hoc networking. The present invention can enable the 5G network to cover a large number of terminals in a wide area and maintain low-speed services of the terminals. At the same time, it can appropriately reduce the energy consumption of 5G base station signals and optimize the overall network overhead.

[0006] The technical solutions to the above problems are as follows:

[0007] A 5G terminal networking method based on wireless ad hoc network includes the following steps:

[0008] S1, constructs a self-organizing network channel module with multiple nodes;

[0009] S2, add the ad hoc network channel module of S1 to the user terminal;

[0010] S3, merges the self-organizing network channel with the 5G channel. The self-organizing network channel module realizes the layer 2 data connection, corresponding to the NAS service of the RRC layer of 5G. In the routing table on the core network side, the relay node of the self-organizing network channel module does not report the routing information, that is, the actual network topology of each node is shielded, and the routing table on the core network side maintains a star topology relationship.

[0011] Furthermore, in S3, the process of merging the ad hoc network channel and the 5G channel is as follows:

[0012] S31, detecting whether the 5G signal strength received by the user terminal from the base station is lower than a set threshold;

[0013] S32, if the detection result in S31 is yes, the user terminal switches to the ad hoc network channel;

[0014] S33, broadcast local 5G channel status;

[0015] S34, check whether the connected node handshake is received;

[0016] S35, if the detection result of S34 is yes, the user terminal sends local 5G control plane information to the connected node;

[0017] S36, the connected node forwards the control plane information to the core network;

[0018] S37, the user terminal accesses the core network and performs low-speed business communication.

[0019] Further, if the detection result in S31 is no, the 5G channel communication is maintained.

[0020] Furthermore, if the connected node handshake is not received in S34, the process enters the steps of monitoring and periodically refreshing the status broadcast and then returns to S33.

[0021] Further, after executing S37, return to S31.

[0022] In the present invention, an ad hoc network channel module is added to the user terminal, and the advantages of ad hoc network such as centerless, multi-hop forwarding, and self-adaptation are utilized to integrate the ad hoc network channel with the 5G channel to achieve network integration of the two channels and service forwarding on the control plane. In the integrated terminal, the ad hoc network mainly implements layer 2 data connection, corresponding to the NAS service of the RRC layer of 5G; in the routing table on the core network side, the ad hoc network relay node does not report routing information, that is, the actual network topology of each node is shielded, and the routing table on the core network side maintains a star topology relationship.

[0023] The user terminal's ad hoc network channel remains in working state and always maintains the network topology of the ad hoc network. When the signal strength received by the user terminal from the base station is lower than the threshold, it switches to the ad hoc network channel autonomously and forwards it to the appropriate node through multi-hop control plane signaling. The node reports the control plane information and low-speed data plane information of the user terminal, and the terminal 5G channel status is inactive. When the signal strength received by the user terminal from the base station is higher than the threshold, the user terminal switches to the 5G channel and the terminal status is restored to connected. Therefore, the effective connection of 5G terminal users can always be maintained.

[0024] The beneficial effect of the patent of this invention is that it solves the problem that a small number of 5G base stations cannot effectively cover a large number of user terminals in a wide area, solves the problem that user terminals are always online and conduct low-speed business communications, and realizes networking communication services for a large number of user terminals in the absence of signal coverage in the edge areas of 5G private networks and 5G public networks. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the design of the ad hoc network model;

[0026] Figure 2 is a schematic diagram of a dual-mode user terminal;

[0027] Figure 3 It is a schematic diagram of the upper layer transmission efficiency;

[0028] Figure 4 It is a comparison chart of upper layer data transmission and reception;

[0029] Figure 5 It is a schematic diagram of upper layer data throughput;

[0030] Figure 6 Schematic diagram of upper layer end-to-end delay (average);

[0031] Figure 7 Schematic diagram of the fusion process of ad hoc network channels and 5G channels. DETAILED DESCRIPTION

[0032] In order to more clearly illustrate the examples of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other implementation methods can be obtained according to the drawings in the specification without paying creative work, and these implementation methods are still within the protection scope of the claims of the present invention.

[0033] At present, many projects led by military research institutes have shown that the communication means of ground equipment below the battalion level are mainly based on self-organizing networks (broadband, narrowband, data link, etc.) and high-speed large-scale access (clusters of multiple mobile terminals in one center, 4G, 5G, etc.). Based on the above, the present invention provides a 5G terminal networking method based on wireless self-organizing networks, comprising the following steps:

[0034] S1, construct a self-organizing network channel module of multiple nodes; in this embodiment, OPNET simulation software is used as a design, verification and simulation platform to construct a small-scale self-organizing network channel module to verify the forwarding efficiency of 5G status packets in the case of multi-hop relay.

[0035] 1. Ad hoc network channel model design

[0036] Using the model library of OPNET simulation software, a 16-node ad hoc network topology is constructed. Figure 1 The network model and node model are given in the figure.

[0037] A switching device based on layer 2 forwarding is formed in the logic of the ad hoc network. All service devices accessing the dual-mode must complete layer 2 addressing and MAC layer response on the service interface side of the dual-mode 5G module. All service system communications within the ad hoc network domain are addressed and exchanged based on MAC addresses. The dual-mode 5G module service interface maintains exchange forwarding with the ad hoc network domain.

[0038] like Figure 2 In the 5G network domain, the core network and base stations need to distinguish data belonging to different users, and need to forward and manage different terminals at the IP layer, so the 5G network domain is in layer 3 forwarding mode. All data transmitted through the 5G network domain should be routed and forwarded by 5G N6 and the 5G module interface of the dual-mode terminal.

[0039] 2. Simulation test results

[0040] Set the src parameter and the data packet format to Dsr_Upper_Data. Dsr_Upper_Data is the upper layer data of the protocol based on DSR (dynamic source routing is a routing protocol for wireless self-organizing networks). In this article, it corresponds to the signal strength threshold judgment from the 5G module and sets the data packet length to 512 bytes.

[0041] Select the relevant parameters of the upper layer in the global parameters, and obtain the forwarding efficiency of the 16-node self-organizing network model for the upper layer information from the 5G module through the simulation of the network model, such as Figures 3 to 6 .

[0042] S2, add the ad hoc network channel module of S1 to the user terminal.

[0043] S3, merges the self-organizing network channel with the 5G channel. The self-organizing network channel module realizes the layer 2 data connection, corresponding to the NAS service of the RRC layer of 5G. In the routing table on the core network side, the relay node of the self-organizing network channel module does not report the routing information, that is, the actual network topology of each node is shielded, and the routing table on the core network side maintains a star topology relationship.

[0044] like Figure 7 As shown in Figure 1, in S3, the process of merging the ad hoc network channel and the 5G channel is as follows:

[0045] S31, detecting whether the 5G signal strength received by the user terminal from the base station is lower than a set threshold;

[0046] S32: If the detection result in S31 is yes, the user terminal switches to the ad hoc network channel; if the detection result in S31 is no, the 5G channel communication is maintained.

[0047] S33, broadcast local 5G channel status;

[0048] S34, check whether the connected node handshake is received;

[0049] S35, if the detection result of S34 is yes, the user terminal sends local 5G control plane information to the connected node; if the connected node handshake is not received in S34, it enters the steps of monitoring and periodic refresh status broadcast and returns to S33.

[0050] S36, the connected node forwards the control plane information to the core network;

[0051] S37, the user terminal accesses the core network and performs low-speed service communication. After executing S37, the process returns to S31.

Claims

1. A 5G terminal networking method based on wireless ad hoc network, characterized in that: The following steps are involved: S1, constructs a self-organizing network channel module with multiple nodes; S2, add the ad hoc network channel module of S1 to the user terminal; S3, merges the self-organizing network channel with the 5G channel. The self-organizing network channel module realizes the layer 2 data connection, corresponding to the NAS service of the RRC layer of 5G. In the routing table on the core network side, the relay node of the self-organizing network channel module does not report the routing information, that is, the actual network topology of each node is shielded, and the routing table on the core network side maintains a star topology relationship.

2. A 5G terminal networking method based on wireless ad hoc network according to claim 1, characterized in that: In S3, the process of merging the ad hoc network channel and the 5G channel is as follows: S31, detecting whether the 5G signal strength received by the user terminal from the base station is lower than a set threshold; S32, if the detection result in S31 is yes, the user terminal switches to the ad hoc network channel; S33, broadcast local 5G channel status; S34, check whether the connected node handshake is received; S35, if the detection result of S34 is yes, the user terminal sends local 5G control plane information to the connected node; S36, the connected node forwards the control plane information to the core network; S37, the user terminal accesses the core network and performs low-speed business communication.

3. A 5G terminal networking method based on wireless ad hoc network according to claim 2, characterized in that: If the detection result in S31 is no, the 5G channel communication is maintained.

4. A 5G terminal networking method based on wireless ad hoc network according to claim 2, characterized in that: If the connected node handshake is not received in S34, the process enters the steps of monitoring and periodically refreshing the status broadcast and then returns to S33.

5. A 5G terminal networking method based on wireless ad hoc network according to claim 2, characterized in that: After executing S37, the process returns to S31.

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