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http://dx.doi.org/10.3745/KIPSTC.2002.9C.1.097

The Seamless Handoff Algorithm based on Multicast Group Mechanism among RNs in a PDSN Area  

Shin, Dong-Jin (Wireless Brodcasting Research Division, Electronics and Telecommunications Research Institute)
Kim, Su-Chang (Wireless Brodcasting Research Division, Electronics and Telecommunications Research Institute)
Lim, Sun-Bae (Electronics and Telecommunications Research Institute)
Oh, Jae-Chun (Dept.of Computer Engineering, Graduate School of Seokyeong UniversityUniversity)
Song, Byeong-Kwon (Dept.of Computer Engineering, Seokyeong University)
Jeong, Tae-Eui (Dept.of Computer Engineering, Seokyeong University)
Publication Information
The KIPS Transactions:PartC / v.9C, no.1, 2002 , pp. 97-106 More about this Journal
Abstract
In 3GPP2 standard, MIP is used and a PDSN performs the function of FA to support macro mobility. When a MS is roaming from a PDSN area to another, the mobility supported is called macro mobility, while it is called micro mobility when a MS is roaming from a RN area to another in a PDSN area. Since a PDSN performs the function of FA in 3GPP2 standard, it is possible to support mobility but its mechanism is actually for supporting macro mobility, not for micro mobility, thus it is weak in processing fast and seamless handoff to support micro mobility. In this paper, we suggest the seamless handoff algorithm barred on multicast group mechanism to support micro mobility. Depending on the moving direction and velocity of a MS, the suggested algorithm constructs a multicast group of RNs on the forecasted MS's moving path, and maximally delays RNs'joining to a multicast group to increase the network efficiency. Moreover, to resolve the buffer overhead problem of the existent multicast scheme, the algorithm suggests that each RN buffers data only after the forecasted handoff time. To prove deadlock freeness and liveness of the algorithm. we use state transition diagrams, a Petri-net modeling and its reachability tree. Then, we evaluate the performance by simulation.
Keywords
handoff algorithm; multicast group; micro Mobility; Petri-net; Performance evaluation;
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