Joint method of routing metrics and channel allocation for multi-rate wireless mesh networks
A channel allocation, multi-rate technology, applied in wireless communication, network traffic/resource management, electrical components, etc., can solve problems such as the inability to truly reflect the actual performance of the network
Active Publication Date: 2019-01-04
JILIN UNIV
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Problems solved by technology
However, in the existing routing measurement methods or channel allocation methods for multi-rate networks, the mutual influence between the two is not considered. After the routing measurement, it is generally assumed that the channel allocation is determined by an external agent and the channel allocation does not change frequently. Allocation is generally assumed to be based on a fixed network structure or spanning tree, which does not truly reflect the actual performance of the network
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[0051] The present invention is described in detail below in conjunction with accompanying drawing:
[0052] Such as figure 1 As shown, a kind of multi-rate wireless Mesh network route measurement of the present invention and channel assignment joint method specifically comprise the following steps:
[0053] Step 1) as in figure 2 As shown, in a multi-rate network environment, the method of reverse path finding from the destination node is adopted to measure the multi-rate shortest path routing. By calculating the path cost from the source node to the destination node under different conditions multiple times, the minimum path cost of the source node Overhead, get the shortest path from the source node to the destination node, and get the forwarding node and the required transmission rate. An example of a multi-rate wireless Mesh network after multi-rate shortest path routing measurement is shown in Figure 3;
[0054] (1) Given a network graph G = (V, E), V is a non-empty ...
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The present invention relates to a multirate wireless Mesh network routing metric and channel distribution combination method. The method comprises the steps of determining shortest path from a source node in a multirate wireless Mesh network to a destination node, a corresponding forwarding node and the needed transmission rate, and obtaining the multirate wireless Mesh network after the routing metric; separating the different rate links on the network nodes based on a rate separation principle, distributing the different rate links to different interfaces to enable the throughput weights of the nodes to be maximum; carrying out the channel distribution by taking the interfaces on the nodes as units. The method of the present invention considers the competition between the different rate links on the nodes, can effectively solve the property abnormality problem of the multirate wireless Mesh network, realizes the link rate separation, and enables the network throughput to be improved.
Description
technical field [0001] The present invention relates to the field of multi-rate transmission of wireless Mesh networks, and more particularly relates to a method for combining routing measurement and channel allocation of multi-rate wireless Mesh networks. Background technique [0002] Wireless Mesh Networks (WMNs), as a next-generation wireless broadband network that provides users with Internet access, is receiving widespread attention from global standardization organizations and academic research institutions. WMNs can effectively solve the "last mile" problem of broadband Internet network access, have significant cost advantages in deployment, and have high flexibility. After deployment, wireless links can be reorganized on a large scale. WMNs consist of a group of fixed Mesh routers forming a wireless backbone network to provide Internet access services for wireless Mesh clients. Some Mesh routers act as gateways and connect to the Internet through high-speed wired lin...
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IPC IPC(8): H04W28/08H04W40/02H04W40/12H04W40/16
CPCH04W28/08H04W40/02H04W40/12H04W40/16
Inventor 石文孝刘吉平王继红崔克强柴媛吴芃霞
Owner JILIN UNIV