The Performance Comparison of BGP-GCR+ and AODV Routing Protocols in Mobile Ad-Hoc Networks

This paper presents the implementation and performance evaluation of our proposed BGP-GCR+ routing architecture via simulation in ns-2. BGP-GCR+ consists of three components: (1) a two-level hierarchical, non-overlapped, one-node fault-tolerant routing algorithm for large-scale mobile ad-hoc networks (MANETs), (2) an IPv6-based address stateless auto-configuration scheme, and (3) procedures at Internet gateways between autonomous systems (ASs) to select backup or loadbalancing routes through MANETs. We have implemented the first component of BGP-GCR+ into ns-2 for the performance evaluation. The simulation results show that the packet delivery ratio in BGP-GCR+ is slightly lower than that in the ad-hoc on-demand distance vector (AODV) for the high-mobility, small-scale (50-150 nodes), but slightly higher for the medium-scale (200 nodes) MANETs. Moreover, the routing overhead is lower in BGP-GCR+ compared with AODV. The implementation of other components of BGP-GCR+ in ns-2 and the mapping of medium access control (MAC)-related metrics into the link stability of the cluster construction in BGPGCR+ for quality of service (QoS) support, their performance evaluations are subject to our future researches. Keywords-MANETs, routing, backup, load-balancing, address auto-configuration.