Load balancing of adaptive zone routing in ad hoc networks

A load-balancing scheme has a significant effect on the performance of the adaptive zone routing protocol, especially in an ad hoc network environment. In order to analyze the effect on the distribution of input traffic among global paths in AZRP (adaptive zone routing protocol), the routing process is evaluated in terms of two additional local history tables to be maintained in each node: One for the forward error-control (FEC) code rate and a second one for the required information rate with the neighboring nodes. Then the local routing process can then be simplified by creating an efficient load balancing rule. We then considered the load balancing as an optimization problem by using congestion parameter (CP). The solution to the optimization problem is interestingly in accordance to CP Our simulation results show that AZRP with load balancing (B-AZRP) is so effective that the number of throughputs is increased significantly while the network resource can be utilized more efficiently than that in AZRP (adaptive zone routing protocol). We propose a load balancing for hybrid routing protocol as its name indicates: B-AZRP as an extended from adaptive zone routing protocol (ZRP).