Performance comparison of cellular and multi-hop wireless networks: a quantitative study
Proceedings of the 2001 ACM SIGMETRICS international conference on Measurement and modeling of computer systems
On using the ad-hoc network model in cellular packet data networks
Proceedings of the 3rd ACM international symposium on Mobile ad hoc networking & computing
Transmission power control for multiple access wireless packet networks
LCN '00 Proceedings of the 25th Annual IEEE Conference on Local Computer Networks
LCN '01 Proceedings of the 26th Annual IEEE Conference on Local Computer Networks
Interworking techniques and architectures for WLAN/3G integration toward 4G mobile data networks
IEEE Wireless Communications
Interworking architecture between 3GPP and WLAN systems
IEEE Communications Magazine
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The coordinated coexistence of WLANs and WPANs in a dual-mode network is a recently introduced idea and is expected to increase the overall system performance by allowing for the efficient cooperation of both WLANs and WPANs. Topology control (e.g., power control, smart antennas, and different frequency channels) needs to be employed to allow for the simultaneous operation of both modes. In this paper, different frequency channels that allow for high data rates within a small transmission range are considered in order to create multiple WPAN environments inside a WLAN cell. The latter environment requires the support of a second mode of operation which introduces additional overhead that may degrade the overall system performance. Certain conditions, under which system performance improvement is achievable, are established here. In particular, an analytical mobility model for WPAN environments is proposed and employed in the analytical studies. It is shown that the system may be effective when node mobility is low and the traffic load among nodes is high. The corresponding upper and lower bounds on mobility and traffic are also analytically derived. Simulation results for a variety of scenarios support the claims and expectations of the aforementioned analysis and demonstrate that performance improvement is possible when WLANs and WPANs coexist and cooperate in a network.