Motion Adaptive Vertical Handoff in CellularWLAN Heterogeneous Wireless Network
Joint Authors
Ma, Lin
Li, Limin
Xu, Yubin
Fu, Yunhai
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-03-10
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Medicine
Information Technology and Computer Science
Abstract EN
In heterogeneous wireless network, vertical handoff plays an important role for guaranteeing quality of service and overall performance of network.
Conventional vertical handoff trigger schemes are mostly developed from horizontal handoff in homogeneous cellular network.
Basically, they can be summarized as hysteresis-based and dwelling-timer-based algorithms, which are reliable on avoiding unnecessary handoff caused by the terminals dwelling at the edge of WLAN coverage.
However, the coverage of WLAN is much smaller compared with cellular network, while the motion types of terminals can be various in a typical outdoor scenario.
As a result, traditional algorithms are less effective in avoiding unnecessary handoff triggered by vehicle-borne terminals with various speeds.
Besides that, hysteresis and dwelling-timer thresholds usually need to be modified to satisfy different channel environments.
For solving this problem, a vertical handoff algorithm based on Q-learning is proposed in this paper.
Q-learning can provide the decider with self-adaptive ability for handling the terminals’ handoff requests with different motion types and channel conditions.
Meanwhile, Neural Fuzzy Inference System (NFIS) is embedded to retain a continuous perception of the state space.
Simulation results verify that the proposed algorithm can achieve lower unnecessary handoff probability compared with the other two conventional algorithms.
American Psychological Association (APA)
Li, Limin& Ma, Lin& Xu, Yubin& Fu, Yunhai. 2014. Motion Adaptive Vertical Handoff in CellularWLAN Heterogeneous Wireless Network. The Scientific World Journal،Vol. 2014, no. 2014, pp.1-7.
https://search.emarefa.net/detail/BIM-1049247
Modern Language Association (MLA)
Li, Limin…[et al.]. Motion Adaptive Vertical Handoff in CellularWLAN Heterogeneous Wireless Network. The Scientific World Journal No. 2014 (2014), pp.1-7.
https://search.emarefa.net/detail/BIM-1049247
American Medical Association (AMA)
Li, Limin& Ma, Lin& Xu, Yubin& Fu, Yunhai. Motion Adaptive Vertical Handoff in CellularWLAN Heterogeneous Wireless Network. The Scientific World Journal. 2014. Vol. 2014, no. 2014, pp.1-7.
https://search.emarefa.net/detail/BIM-1049247
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1049247