Abstract: Network connectivity is the key indicator of the network survival ability and sustainment．In order to optimize the network connectivity,a connectivity optimization strategy based on wireless techniques was proposed．The strategy takes advantage of the flexibility of wireless link establishment．It first detects and measures the network in real-time,and then quantifies the network connectivity according to the above detections and measurements．When the network connectivity is below some threshold,the wireless link backup procedure is started,and the wireless backup construction algorithm is used to reduce the wireless resources needed to backup the links．The strategy tires its best to guarantee the network connectivity through these two procedures．Simulation results show that the proposed strategy can still guarantee the basic connectivity of the network when there are about 70% average link disruption．In the same network context,the proposed strategy can achieve 7%~9% more improvement of the network connectivity than the existing wired link backup scheme.

Key words: Wireless communications,Network,Link disruption,Connectivity,Network optimization