A Fast Handover Scheme For Wireless Network Based On SMIP

The technology keeps present, Internet and wireless communication developing at top speed, part interconnection is covered as with a net already becoming people being not allowed to be short of in the daily life. With the fact that swiftness and violence moving the technology communicating by letter develops, mobile telephone , portable types such as PDA , laptop move the equipment extensive use , people is hoped in the process of displacement still, being able to keep Internet cut-over and continuing communicating by letter. Compared with IPv4, IPv6 has bigger address space, more beneficial to mobile development of technology, Mobile IPv6 technology already becoming the hot spot studying currently. In IETF having announced the first MIPv6 protocol draft in November , 1996. Improvement process 24 editions, the protocol (MIPv6) submits to MIPv6 on June , 2004 for the standard. The MIPv6 protocol still has a lot of question needing solve, AAA, multibroadcast, safety wait if the handover coupling defers, that handover couplings among them defer is to be badly in need of the problem solving currently. The handover coupling defers being referring to moving a node rotating the time receiving another network recovery network communicating by letter regularly needed from a network. MIPv6 protocol handover coupling postpones growing comparatively , is lost easy to bring about the interruption and data bag linking up, have no way to satisfy VoIP waiting for real time application and losing sensitive applicative call for to the data. Hometown agency and the node communicating by letter moving a node in the protocol, moving every time asking distance for it in MIPv6 has dispatched binding logon information , has led into large amount of message order loads. For realizing the seamless pleasure trip , improving the handover coupling function, must improve the fundamental displacement IPv6 protocol handover coupling process, improving the go into moving IPv6 handover coupling process basically at present has been very enthusiastic , IETF has also set up the MIPSHOP working group , handover coupling in the protocol being responsible for resolving MIPv6 has deferred problem and has worked out the corresponding standard. MIPv6 fast handover coupling scheme (FMIPv6) sums displacement IPv6 hierarchical management scheme (HMIPv6) is already submitted for draft, at the same time, people improves a scheme , constitutes scheme and other fast handover coupling scheme to have brought forward many pair of FMIPv6 and HMIPv6's.In this paper, we firstly have studied the schemes that has been introduced MIPv6 fast handover coupling scheme's at present, then we have summed up the currently main handover coupling scheme, have been that 4 resembles as follows according to realizing mechanism, these schemes being allotted: The fast handover coupling , hierarchical management, constitute a scheme , resolve a scheme owing to that MPLS and the stream label resemble. And have done thorough analysis and have expounded the person comparatively, realizing principle in culture to every handover coupling scheme, show clearly whose respective excellent and shortcoming.Seamless relatively fairly good handover coupling system SMIP mounting , transferring in culture to currently various scheme here basis to take over effect careful analysis. Two well-known approaches in reducing the MIP handoff latency have been proposed in the literature. One aims to reduce the (home) network registration time through a hierarchical management structure, while the other tries to minimize the lengthy address resolution delay by address pre-configuration through what is known as the fast-handoff mechanism. We present a novel seamless handoff architecture, S-MIP, that builds on top of the hierarchical approach and the fast-handoff mechanism, in conjunction with a newly developed handoff algorithm based on pure software-based movement tracking techniques. Using a combination of simulation and mathematical analysis, we argue that our architecture is capable of providing packet lossless handoff with latency similar to that of L2 handoff delay when using the 802.11 access technology. More importantly, S-MIP has a signaling overhead equal to that of the well-known 'integrated' hierarchical MIP with fast handoff scheme, within the portion of the network that uses wireless links. In relation to our S-MIP architecture, we discuss issues regarding the construction of network architecture, movement tracking, registration, address resolution, handoff algorithm and data handling. The SMIP shortcoming is that design is very complicated , the message order having increased the area inner is loaded with each other; Besides, whose displacement pattern forecast algorithm very complicated , still needs an improvement.Based on these, we propose a new model called Enhanced Seamless Mobile IPv6 (ESMIPv6) to improve the performance of the handover component in location management schemes. This model improves handover by predicting user location based on Users' Mobility Profiles. The overall goals of ESMIPv6 are to reduce both handover latency and signaling loads generated during the location update process. Simulation results show that the use of ESMIPv6 produces a handover with low delay, as well as a significant drop of signaling overhead. Better results have been obtained by our protocol in all cases studied when compared to Mobile IPv6 (MIPv6) and Fast Handovers for MIPv6 (FMIPv6).Our model aims to reduce signaling costs generated by correspondent nodes' updates as well as delays pertaining to handover between networks. It takes advantage of the opportunities offered by users' mobility profiles to provide transparent handovers between networks. These profiles are used by our protocol to help predict the next cell where the handover will occur and to update the MN's correspondents before leaving the current network. The moment where the handover will occur can be predicted by relying on information gathered from the network. On the other hand, using mobility profiles enables our protocol to update an MN's location once the change in networks is known, thus reducing signaling costs. Also, we presented the users' mobility learning module used to generate mobility patterns. We then introduced an analytical model to study the performance of our model and compare it to other mobility management strategies. Furthermore, we illustrated our model's operational aspects using several scenarios. Our protocol's performance was validated using many simulations. The numerical results obtained from the simulations show that ESMIPv6 significantly reduces handover delay and performs better than MIPv6 and ESMIPv6 in all cases. These results also show that our protocol reduces signaling costs.