Method for realizing intelligent optimization of wireless channel in communication system

Abstract

The invention relates to a method for realizing intelligent optimization of a wireless channel in a communication system, which belongs to the field of wireless communication systems, and is characterized in that a routing device senses the quality of a main wireless link and a standby wireless link connected with the routing device in real time, and when the quality of the main wireless link becomes poor, the main wireless link is automatically and quickly switched to the standby wireless link, so that the wireless channel is optimized. The method has the capability of quickly switching the main wireless link and the standby wireless link, and also can realize no packet loss of service data in the switching process. According to the invention, through sensing the state of the wireless link in real time, the router can realize rapid switching or back-switching of the wireless link, so that the problem of transient interruption of service transmission caused by dynamic routing convergence during channel switching in a traditional network is avoided, and real-time and reliable transmission of command services during land mobile communication and marine formation communication in a communication system is guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of wireless communication systems, and in particular to a method for realizing intelligent optimization of wireless channels in a communication system, and more specifically to a method for realizing intelligent optimization of multiple wireless links under three-layer routing. Background Art

[0002] With the increasing application of self-organizing networks, scattering and other wireless means in the communication field, as well as the increasingly high requirements for the reliability and real-time transmission of communication services, the traditional design scheme is to connect the self-organizing network and scattering means to the router, configure different priorities on the interface of the router connected to the wireless channel, configure the main and backup wireless links, and realize the switching of the main and backup channels through the dynamic routing protocol.

[0003] The main shortcomings are as follows:

[0004] (1) Traditional dynamic routing protocols use their own convergence mechanism to switch between the primary and backup links. During the switching process, the routing re-convergence may cause a brief service interruption. Especially when the fleet is in motion or the network is large, the interruption time may even exceed 1 minute, which is unacceptable for command services that require high reliability and real-time performance.

[0005] (2) Traditional dynamic routing protocols cannot sense the quality of the primary and backup wireless links. Even if the route on the primary wireless link is reachable, if the wireless channel quality is very poor or even unable to forward messages normally, the link will not be switched, resulting in packet loss of service data. Summary of the invention

[0006] In order to solve the problem in the background technology, the present invention proposes a method for realizing intelligent optimization of wireless channels in a communication system, which has the ability to quickly switch between primary and backup wireless links and can also achieve no packet loss of service data during the switching process.

[0007] The technical solution adopted by the present invention is:

[0008] A method for implementing intelligent optimization of wireless channels in a communication system comprises the following steps:

[0009] (1) Configure the priority of the interfaces connecting the primary wireless link and the backup wireless link on the routers at both ends, giving priority to the primary wireless link.

[0010] (2) The wireless link status sensing function is enabled on the interfaces connecting the primary wireless link and the backup wireless link on the routers at both ends, and the channel bit error rates of the primary wireless link and the backup wireless link are collected in real time. When the channel bit error rate of the primary wireless link is detected to be larger than the set value, the incompletely received data is cached in the local router, and the backup wireless link is switched;

[0011] (3) The local router sends a channel switching instruction to the peer router through the backup wireless link. After receiving the instruction, the peer router decides whether to switch to the backup wireless link according to the pre-configured strategy.

[0012] In step (3), whether to switch to the backup wireless link is determined according to the pre-configured strategy. The specific process is as follows:

[0013] If the primary wireless link is a single-channel and the pre-configured policy is not to switch, the peer router will still use the primary wireless link to send data. When the channel bit error rate of the primary wireless link exceeds the set value, it will switch to the backup wireless link.

[0014] If the pre-configured policy is synchronous switching, the peer router switches to the backup wireless link after receiving the instruction that the channel has been switched.

[0015] The beneficial effects of the present invention are as follows:

[0016] (1) The router senses the status of the wireless link. When the quality of the primary wireless link deteriorates beyond a set threshold, the router switches the channel from the primary wireless link to the backup wireless link. This avoids the problem of channel failure when the primary wireless link deteriorates but the route is reachable.

[0017] (2) The present invention does not adopt the solution in the traditional network where the router actively initiates a detection message to detect the quality of the wireless link, and provides a basis for wireless channel switching based on the router detection results. The reason is that in order to achieve fast switching between the main and backup wireless links, the router needs to send a large number of detection messages with high transmission priority on the main and backup wireless links, which will occupy the current limited wireless channel bandwidth, resulting in a decrease in wireless channel utilization and even serious service packet loss or even service transmission interruption due to forwarding detection messages.

[0018] (3) The present invention can sense the status of the wireless link in real time, so that the router can quickly switch or switch back the wireless link, thereby avoiding the problem of temporary interruption of service transmission caused by dynamic routing convergence during channel switching in traditional networks, and ensuring the real-time and reliable transmission of command services in communication systems, such as land mobile communications and maritime formation communications. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of configuring different interface priorities on routers at both ends of the present invention.

[0020] Figure 2 This is a logic flow chart of the switching of the primary and standby wireless links of the present invention. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and examples. Note: The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0022] A method for implementing intelligent optimization of wireless channels in a communication system comprises the following steps:

[0023] (1) Configure the router interface priority. Configure different interface priorities on the routers at both ends, which are reflected in the cost value (generally, the smaller the cost value, the higher the priority, such as Figure 1 On the middle router, if the cost value of the primary wireless ad hoc network link interface is 100 and the cost value of the backup scattering communication link interface is 200), the primary wireless link is used first for service transmission.

[0024] (2) The wireless link status awareness function is enabled on the interfaces connecting the active wireless link and the standby wireless link on the routers at both ends. The routers receive the channel bit error rate reported by the active wireless link and the standby wireless link through the service interface in real time, including link quality and bit error rate. Figure 2 As shown in the figure, the logical process of the router switching between the main and backup wireless links and switching back is shown. That is, after startup, the router will continue to obtain the link status of the main and backup wireless links, and use the pre-set bit error rate threshold as the judgment condition. If it does not exceed the set threshold, the wireless link can continue to be used. If it meets the set threshold, the link is switched. The larger the bit error rate, the worse the performance.

[0025] (3) The local router sends a channel switching instruction to the peer router through the backup wireless link. After receiving the instruction, the peer router decides whether to switch to the backup wireless link according to the pre-configured strategy;

[0026] Among them, whether to switch to the backup wireless link is determined according to the pre-configured strategy. The specific process is as follows:

[0027] If the primary wireless link is a single channel and the pre-configured policy is not to switch, the peer router will still use the primary wireless link to send data. When the channel bit error rate of the primary wireless link exceeds the set value, it will switch to the backup wireless link. If the pre-configured policy is synchronous switching, the peer router will switch to the backup wireless link after receiving the channel switching instruction.

Claims

1. A method for implementing intelligent optimization of wireless channels in a communication system, characterized in that: The following steps are involved: (1) Configure the priority of the interfaces connecting the primary wireless link and the backup wireless link on the routers at both ends, giving priority to the primary wireless link. (2) The wireless link status sensing function is enabled on the interfaces connecting the primary wireless link and the backup wireless link on the routers at both ends, and the channel bit error rates of the primary wireless link and the backup wireless link are collected in real time. When the channel bit error rate of the primary wireless link is detected to be larger than the set value, the incompletely received data is cached in the local router, and the backup wireless link is switched; (3) The local router sends a channel switching instruction to the peer router through the backup wireless link. After receiving the instruction, the peer router decides whether to switch to the backup wireless link according to the pre-configured strategy.

2. The method for implementing intelligent optimization of wireless channels in a communication system according to claim 1, characterized in that: In step (3), whether to switch to the backup wireless link is determined according to the pre-configured strategy. The specific process is as follows: If the primary wireless link is a single-channel and the pre-configured policy is not to switch, the peer router will still use the primary wireless link to send data. When the channel bit error rate of the primary wireless link exceeds the set value, it will switch to the backup wireless link. If the pre-configured policy is synchronous switching, the peer router switches to the backup wireless link after receiving the instruction that the channel has been switched.

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