Q-PMIP: Query-based proxy mobile IPv6

This paper proposes the two extensive data delivery schemes of Query-based PMIPv6 (Q-PMIPv6) and Signalling Query-based PMIPv6 (SQ-PMIPv6) in wireless networks. In the proposed Q-PMIPv6 scheme, when a correspond node (CN) sends the data packet to mobile node (MN), the Mobile Access Gateway (MAG), which CN is attached to, will send the binding query messages to Local Mobility Anchor (LMA) to get the Proxy-CoA of mobile node. After that, the CN can deliver all the subsequent data packets over the optimized routing path. The proposed SQ-PMIPv6 scheme is similar to the Q-PMIPv6. However, in SQ-PMIPv6, the CN will use a prior signalling with its attached MAG, before data transmission, to get the Proxy CoA of the mobile node. By using the SQ-PMIPv6, we can reduce the overhead of MAG of CN required for buffering the data packets during the Proxy Binding Query operation. The two proposed schemes are compared with the existing scheme of PMIPv6 by ns-2 simulations. From the performance analysis, we can see that the proposed two schemes can reduce the overhead of packet processing at LMA and throughput of data transmission, compared to the existing PMIPv6 scheme.