A QoS-Guaranteed Cell Selection Strategy for Heterogeneous Cellular Systems

Abstract

In order to improve the accuracy of cell selection in heterogeneous cellular systems, this paper proposes a fuzzy multiple-objective decision-based cell selection (FMDCS) strategy. Since heterogeneous cellular systems have different access technologies and multiple traffic classes, the strategy adopts cell type, data rate, coverage, transmission delay, and call arrival rate as evaluation indices, and uses different weight vectors according to the traffic classes of the mobile host. Then, a fuzzy multipleobjective decision algorithm is applied to select the optimal cell from all candidates. This paper also gives an instance analysis and simulation. The instance analysis shows FMDCS makes different selections for different traffic classes. Simulation results of the after-handoff quality-ofservice (QoS) show the selected cell can provide MH optimal service.

Intelligent cell selection satisfying user requirements for inter-system handover in heterogeneous networks

“…We assume that 30 services with the minimum data rate are accepted regardless of the service type. The resource utilization of the ICS scheme (proposed in this paper) is much better than that of the FMDBS [13] schemes which, in turn, is better than the RSS scheme. In addition, the utilization with low speed is higher than that with high speed.…”

“…In order to improve the accuracy of cell selection in heterogeneous cellular systems, Guo et al [13] proposed a fuzzy multipleobjective decision-based cell selection (FMDCS) strategy. Since heterogeneous cellular systems have different access technologies and multiple traffic classes, the strategy adopts cell type, data rate, coverage, transmission delay, and call arrival rate as evaluation indices, and uses different weight vectors according to the traffic classes of the mobile host.…”

“…Therefore, selecting a cell with merely RSS can cause significant QoS degradation such as transmission delay and packet loss. Then, Guo et al proposed a FMDCS (fuzzy multiple-objective decision-based cell selection) scheme in heterogeneous cellular systems [13]. This scheme considerably improved the RSS based cell selection scheme.…”

Joint call admission control algorithms: Requirements, approaches, and design considerations

“…Guo et al [38] propose a fuzzy multiple-objective decision based JCAC algorithm for heterogeneous cellular network. The algorithm is design to select RATs for handoff calls.…”

“…They often incorporate fuzzy logic or fuzzy multiple attribute decision making (MADM) technique. Examples of multiple-criteria JCAC algorithms can be found in [35,38].…”