Multi-radio frequency multi-channel wireless Mesh network resource cross-layer optimizing method

Abstract

A multi-radio frequency multi-channel wireless Mesh network resource cross-layer optimizing method aims to solve the problem of wireless resource cross-layer optimizing of a wireless Mesh network. For the multi-channel multi-radio frequency wireless Mesh network, cross-layer optimizing among channel distributing, route distributing and speed distributing is considered, the complex communication problem is converted into a convex optimization problem, the original optimizing problem is divided into three sub problems by utilizing a Lagrangian dual method, and the simplified problems are solved in the wireless Mesh network in a distributed mode, thus obtaining the global optimal solution. A typical WMN (wireless mesh network) route protocol is compared, analyzed and summed up, and by combining with the cross-layer optimization theory, a route protocol based on comprehensive criteria and suitable for integrated environment of internet of things is provided.

Description

technical field [0001] The invention belongs to the technical field of combining computer application and mobile Internet. Background technique [0002] The Internet of Things is the third wave of the world's information industry after computers, the Internet and mobile communication networks. With the in-depth research on sensor networks, people's understanding and application of the Internet of Things have been improved. They believe that the Internet of Things will be the most important industrial trend in the next 10 years, and it will be the growth point and support point of the next economic development. Due to the great development needs and market demands, the Internet of Things is now a research hotspot. [0003] The infrastructure of the Internet of Things should be built on a transparent and seamlessly connected network infrastructure that integrates multiple network communication technologies from wired to wireless. Wireless Mesh network is a new type of broad...

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Problems solved by technology

[0007] The purpose of the present invention is to solve the problem that the performance of the existing multi-radio multi-channel wireless Mesh network cannot meet the growing demand, and propose a multi-radio multi-channel multi-channel wireless Mesh network resource cross-layer optimization method considering channel allocation, route allocation and rate allocation At the same time, a convex optimization model is established, and the Lagrangian dual decomposition method is used to distribute the optimal solution of the entire network, which balances network resources more reasonably, improves network performance, and ensures smooth network communication

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