A channel preemption model for heterogeneous WLAN-embedded cellular networks

Authors:
Tsang-Ling Sheu;Wei-Feng Wei
Affiliations:
Department of Electrical Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan;Department of Electrical Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan
Venue:
TELE-INFO'08 Proceedings of the 7th WSEAS International Conference on Telecommunications and Informatics
Year:
2008

Citing 4
Cited 0

Performance Analysis of Radio Resource Allocation for Multimedia Traffic in Cellular Networks

AINA '05 Proceedings of the 19th International Conference on Advanced Information Networking and Applications - Volume 1
An Improved Preemption Policy for Higher User Satisfaction

AINA '05 Proceedings of the 19th International Conference on Advanced Information Networking and Applications - Volume 1
A framework for bandwidth degradation and call admission control schemes for multiclass traffic in next-generation wireless networks

IEEE Journal on Selected Areas in Communications
Fairly adjusted multimode dynamic guard bandwidth admission control over CDMA systems

IEEE Journal on Selected Areas in Communications

Quantified Score

Hi-index	0.00

Visualization

Abstract

This paper presents a channel preemption model for vertical handoff in heterogeneous WLAN (wireless LAN) embedded cellular networks. The novelty of this paper is right in that a newly initiated mobile node (MN) outside the WLAN coverage can preempt the channels occupied by an MN inside the WLAN coverage when the cellular channels are completely used up. The channel preempted MN is forced to switch its network access to WLAN. This proposed channel preemption scheme can effectively reduce the blocking probability while not disrupting any of the existing connections within WLANs. For the purpose of evaluation, we build a three-dimension Markov chains to analyze the proposed vertical handoff model. Network performance in terms of the number of active WLAN users, channel blocking probability of a cellular network, and preemption probability of an MN are calculated. From the analytical results, we demonstrate the performance superiority of the proposed scheme by varying the ratio of WLAN coverage.