Topology recognition method and system for heterogeneous wireless network

Abstract

The invention discloses a topology recognition method and system for a heterogeneous wireless network. The method comprises the steps that a home-network device acquires time domain energy signals of data transmission among all other-network devices; the home-network device separates the time domain energy signals into an independent signal frame sequence and obtains signal frame feature information; the home-network device carries out cluster analysis according to the signal frame feature information so as to obtain an other-network neighbor list which represents the corresponding relation between all signal frames and the other-network devices; signal frame alignment and other-network device aggregation are realized according to the other-network neighbor list; the transfer relation among the signal frames is concluded according to the results of signal frame alignment and other-network device aggregation so as to obtain local topology information of the other-network devices, and all the local topology information of the other-network devices is converged to a home-network gateway, so as to reconstruct the global topological relations of other networks in a monitored range of a home network. According to the method, the recognition on topologies of heterogeneous other networks is formed through signal perception and analysis and is used for carrying out local (or global) communication coordinating and scheduling on the home-network device, and the use efficiency of spatial frequency spectra is increased.

Description

technical field [0001] The invention relates to the technical fields of wireless communication, wireless self-organizing network, wireless sensor network and wireless local area network, and in particular to a heterogeneous wireless network topology cognition method and system. Background technique [0002] The wireless terminal not only brings convenience to people anytime and anywhere, but also greatly reduces the system construction cost, so it is highly praised by the industry and users. Especially with the maturity and application of wireless sensor network technology, wireless devices and wireless networks begin to grow at an unprecedented rate. [0003] Due to the scarcity of spectrum resources, it is controlled as a strategic resource, and the frequency bands that can be freely used by civilians are very limited, resulting in many heterogeneous wireless devices and wireless networks competing in the same frequency band. This state will become the norm before higher ...

AI Technical Summary

Problems solved by technology

Communication coordination between devices of the same wireless standard has been fully studied, but there are many difficulties in how to perceive and coordinate with each other between wireless devices with different encoding methods and different bandwidths.

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