Research On Cross-layer Handover Technology For Ad Hoc Network Based On Mobile Ipv6

The utilization of the handover technology, which is an important component ofradio resource management, is inevitable when mobile node moves. Mobile IPv6canprovide network layer's feasible mobility solution for nodes, and Ad hoc network hasthe advantages of quick deployment, self-organizing and many other advantages, as aresult, the research on combing the merits of Mobile IPv6(MIPv6) and Ad hoc networkbecomes a hot topic at present. However, due to the strict hierarchy limitation for Adhoc network, much handover delay will be produced in the handover process of Ad hocnetwork based on MIPv6. It is less favorable for the development of services such as thereal-time communication and multimedia.For these reasons, this paper paied greatattention to the study on cross-layer handover technology for Ad hoc network based onMobile IPv6, and mainly made the following work:Firstly, it analyzed the handover process of Mobile IPv6as well as the handoverdelay under hierarchical Ad hoc network in detail, based on this a cross-layer handovermethod which adopted L2-Trigger to reduce the handover delay was proposed. ProperL2-Trigger names together with their parameters were given in this paper. Also, theapplication of L2-Trigger in MIPv6was introduced. Theoretical analysis showed thatthe L2-Trigger can reduce handover delay, moreover, it would save the control signalingnumber rather than bring additional burden of control signaling cost.Secondly, the L2-Trigger handover method based on movement prediction wasproposed depending on the analysis and summary of the existing handover methodtriggered by the L2-Trigger. The simulation results illustrated that the proposed methodcan trigger the L2-Trigger in a better way with greater accuracy, which can betterimprove the handover delay due to the trigger made the Layer3handover processconducting in advance.Finally, under the handover scenario of hierarchical Ad hoc network based onMIPv6, the cross-layer handover algorithm based on Grey Relational Analysis (GRA)was proposed to act as a solution to the situation that many handover targets may existin the handover process together with the traditional handover method didn't take theQoS into consideration. The proposed algorithm was simulated and the results showedthat this method can improve the successful handover rate and avoid frequent handover actions which will lead to unnecessary waste of network resources, so it can provideQoS in the handover process and improve the performance of the network.