Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/932816
- On optimal network selection in a dynamic Multi-RAT environment
Ong, Eng Hwee;
Khan, Jamil Y.
- The University of Newcastle. Faculty of Engineering & Built Environment, School of Electrical Engineering and Computer Science
- A significant challenge to enable multimedia service delivery in a dynamic multiple radio access technologies (multi-RAT) environment is the coordination of vertical handovers between different RATs. Cost function approach has been widely adopted to make vertical handover decision by ranking candidate networks. Although this mechanism can reflect accurately the change of network states and user requirements, it results in frequent, and often, unnecessary handovers which have detrimental impact on QoS, signaling load and system capacity. In this letter, we introduce a novel measurement-based network selection technique that provides a pragmatic way to acquire QoS information. In addition, it augments the handover decision of existing cost function approach, through handover initiation, to provide an optimal network selection outcome. OPNET simulations verify that the proposed technique can reduce unnecessary handovers considerably, improve overall QoS and system capacity.
- IEEE Communications Letters Vol. 14, Issue 3, p. 217-219
- Publisher Link
- Institute of Electrical and Electronics Engineers (IEEE)
- Resource Type
- journal article