Performance Analysis between Bi-directional Symmetric Rote Optimization in IPv4 and Adaptive Local Route Optimization in IPv6 Network

Abstract

Mobile WiMAX is a wireless networking system based on the IEEE 802.16e standard. In order to support mobility some kinds of handoff schemes must be adopted and the hard handoff is defined as mandatory. Hard handover defined as break before make scheme where packet drop ratio is more. To avoid such packet dropping a route optimization scheme to be used to avoid the un-necessary network re- entry point. There are two type of route optimization scheme is there one based on IPv4 network called bidirectional symmetric route optimization and another one used in Hierarchical mobile IPv6 network called Adaptive Local Route optimization Scheme. In BSRO scheme network suffering from triangular Routing problem where handoff latency is increase and throughput goes down .In the ALRO scheme, an MN informs the CN of the MN’s LCoA, if the packet delivery cost is more dominant than the binding update cost. Otherwise, the CN is aware of only the MN’s RCoA. Namely, the ALRO scheme minimizes either the packet delivery cost or the binding update cost depending on the session-to-mobility ratio (SMR) of each CN. So using this scheme route is optimized between two nodes and triangular routing problem is solved, handoff latency decrease and less no. of packet drop. The ALRO scheme used in one MAP domain where in the simulation result show that throughput of network increases as comparison to BSRO scheme.
Key Words: ALRO, BSRO,LCoA, RCoA