Handoff Trigger Nodes for Hybrid IEEE 802.11 WLAN/Cellular Networks

Authors:
Pejman Khadivi;Terence D. Todd;Dongmei Zhao
Affiliations:
Isfahan University of Technology;McMaster University;McMaster University
Venue:
QSHINE '04 Proceedings of the First International Conference on Quality of Service in Heterogeneous Wired/Wireless Networks
Year:
2004

Citing 0
Cited 5

Handoff trigger table for integrated 3G/WLAN networks

Proceedings of the 2006 international conference on Wireless communications and mobile computing
Layer 7 Multimedia Proxy Handoff Using Anycast/Multicast in Mobile Networks

IEEE Transactions on Mobile Computing
Mobile ad hoc relaying for upward vertical handoff in hybrid WLAN/cellular systems

Ad Hoc Networks
Advanced seamless vertical handoff architecture for WiMAX and WiFi heterogeneous networks with QoS guarantees

Computer Communications
An efficient handover decision method based on frame retransmission and data rate for multi-rate WLANs

Ad Hoc Networks

Quantified Score

Hi-index	0.00

Visualization

Abstract

Future mobile handsets will often be multi-mode, containing both wireless LAN (WLAN) and cellular air interfaces. Vertical handoffs will commonly be used to pass voice calls to a cellular network when the user roams outside of WLAN radio coverage. Unfortunately, the transition from WLAN hotspot to cellular coverage is often very abrupt and leads to unacceptable call dropping rates. In this paper we propose and investigate the use of explicit WLAN/cellular handoff triggering. A simple WiFi handoff trigger node (HTN) can be installed in the WLAN/cellular transition region, and generates link layer triggers which cause the initiation of the vertical handoff process. A key function provided by the HTN is to significantly reduce the call dropping rate even when there is very little collaboration between the cellular and WLAN hotspot providers. Results are presented which show that the call dropping probability can be dramatically reduced by the use of a handoff trigger node.