Link availability estimation for routing metrics in MANETs : An overview

A mobile ad hoc network (MANET) is a collection of wireless mobile terminals that are able to dynamically form a temporary network without any aid from fixed infrastructure or centralized administration. MANETs are strongly impacted by the mobility of the ad hoc nodes. Path broken, which is caused by node mobility , leads to the rerouting operations and the degradation of network performance. One critical issue for routing in MANETs is how to select reliable path that can last as long as possible. This paper will address the previous study on how to measure link availability or reliability in order to find more reliable paths. To solve this problem, a criterion that can judge the link reliability is needed. The metric for routing selection in terms of path availability which is based on link availability can be used to select reliable path.