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학술대회 Probabilistic Zone Transition Mobility Model for Multi-Radio Overlay Networks Simulation
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하정락, 김진업, 김상하
International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) 2009, pp.632-636
09MR3900, 이동통신 무선접속방식의 환경 적응형 자율제어 기술 연구, 김진업
Future wireless communication systems are expected to be comprised of multiple overlay networks, in which different kinds of Radio Access Technologies (RATs) are being deployed in overlay. Since efficient use of multiple RATs may result in economical benefits to users and network operators, RAT selection, or joint radio resource management, is an important issue. For the sake of proper RAT selection, users' velocity and network load status are considered as vital parameters. In this regard this paper proposed a mobility model to reflect both individual user's velocity and collective network load according to zones. To cope with different coverage size of RATs and supporting velocity of mobile nodes we employ probabilistic change of velocity according to user's position. We first divide the whole simulation area into zones according to users' mobility pattern and define probabilistic zone transition model (PZTM). We believe the proposed mobility model is consistent with real life as well. ©2009 IEEE.
KSP 제안 키워드
Economical benefits, Joint radio resource management, Mobile node(MN), Mobility models, Mobility pattern, Network load, Network operator, RAT selection, Radio Access Technologies, Users' mobility, Wireless communication system