Construction of a wireless mesh network for urban disaster emergency communication based on SJ-RW blind convergence
At present,natural disasters occur frequently in cities both at home and abroad,and emergency wire-less mesh networks have been valued and applied in urban disaster emergency communication due to their su-periority.However,how to reasonably divide and utilize spectrum resources and quickly access the network is still an urgent problem to be solved.Blind convergence is a channel convergence method based on channel hopping technology,in this paper,the SJ-RW(send jump receiver wait)blind convergence algorithm with fast convergence and full diversity is introduced,and a wireless mesh network for urban disaster emergency commu-nication based on SJ-RW blind convergence is constructed.And then a case study is carried out in the com-plex geographical environment of emergency wireless communication of a city flood disaster.The research re-sults indicate that the new emergency wireless mesh network constructed in this study has significant advantages over traditional networks in parameters,such as maximum convergence time interval and average convergence time interval in urban flood disaster emergency communication applications,and can achieve channel convergence faster and improve channel frequency utilization.The research results can provide a new approach and method for solving urban disaster emergency communication problems.
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