Research On The Technology Of Network Mobility Based On PMIPv6

NEMO has a promising application future in the next generation network, as it handlesmobility of a set of mobile nodes in an aggregate way and provides continuous Internetconnectivity, meeting the demands of people to communicate whenever and wherever possible.When NEMO is deployed in PMIPv6domain, network architecture is complex andcommunication flow is disordered, making interaction insufficient. The main shortages of theexisting solutions are as follows: Firstly, total cost is large and anchor may be overload. Secondly,handover delay is large and there is lack of effective inter-domain handover scheme. Lastly,address registration messages may be tampered and computation cost is large. To this end, thisdissertation is devoted to researching on the NEMO technology based on PMIPv6.Based on the comprehensive analysis of working methods and communication flow inNEMO and PMIPv6combining the deployment scenario, three optimization schemes areproposed to deal with problems of location management, handover management and securitymanagement respectively, improving performance of mobility management. The mainachievements of this dissertation are as follows:1．A locate updating and packet forwarding separation–based location managementmechanism for NEMO （LUPFS-NEMO） is proposed. With the help of a new entity speciallydesigned for location management and extended signaling messages in mobility managemententities, signaling flow is optimized, achieving effective separation of control lay and data lay.Analysis and simulation shows that LUPFS-NEMO reduces total cost and improves the systemreliability.2．A PMIPv6-based fast handover scheme for network mobility （FHP-NEMO） isproposed. According to network load and movement speed of NEMO, the scheme is devided intopredictive and reactive scenario. With the help of L2scheme, pre-handover is performed inadvance before mobile node getting registered. Double buffering packets scheme is designed toavoid packets out of order. Inter-domain handover is effectively supported with extendedsignaling. Analysis and simulation shows that FHP-NEMO can reduce the handover delaycompared to the existing mechanisms and improve the performance of handover management.3．A security associations-based local light authentication mechanism (SALLAM) isproposed. Based on the architecture of authentication, authorization and accounting (AAA), themechanism uses optimized routing policy and extended security association to integrateauthentication and address registration process, making handover and authentication processlimited in local PMIPv6domain. The performance analysis shows that SALLAM not onlyimplements the mutual authentication but also resists tamper attacks to protect the addressregistration information, improving the safety of NEMO, the performance of computation costand authentication delay is better than existing mechanisms.