TITLE:
Adaptive Terminal-Modality-Based Joint Call Admission Control for Heterogeneous Cellular Networks
AUTHORS:
Mahmoud M. Badawy, Salman A. AlQahtani
KEYWORDS:
Call Admission Control; Call Blocking; Call Dropping; Next Generation Wireless Network (NGWN); RAT Selection Approaches
JOURNAL NAME:
International Journal of Communications, Network and System Sciences,
Vol.6 No.9,
August
30,
2013
ABSTRACT: The coexistence of different Radio Access
Technologies (RATs) requires a need for Common Radio Resource Management (CRRM)
to support the provision of Quality of Service (QoS) and the efficient
utilization of radio resources. The provision of QoS is an important and
challenging issue in the design of integrated services packet networks. Call
admission control (CAC) is an integral part of the problem. Clearly, without
CAC, providing QoS guarantees will be impossible. There is unfairness in
allocation of radio resources among heterogeneous mobile terminals in
heterogeneous wireless networks. In this paper, an Adaptive-Terminal
Modality-Based Joint Call Admission Control (ATJCAC) algorithm is proposed to
enhance connection-level QoS and reduce call blocking/dropping probability. The
proposed ATJCAC algorithm makes call admission decisions based on mobile
terminal modality (capability), network load, adaptive the bandwidth of ongoing
call and radio access technology (RAT) terminal support index. Simulation
results show that the proposed ATJCAC scheme reduces call blocking/dropping
probability.