A performance model for admission control in IEEE 802.16

Authors:
Eunhyun Kwon;Jaiyong Lee;Kyunghun Jung;Shihoon Ryu
Affiliations:
Dept. of Elec. Engineering, Yonsei University, Republic of Korea;Dept. of Elec. Engineering, Yonsei University, Republic of Korea;Samsung Electronics Co., LTD., Republic of Korea;Network R&D Center, SK Telecom, Republic of Korea
Venue:
WWIC'05 Proceedings of the Third international conference on Wired/Wireless Internet Communications
Year:
2005

Citing 6
Cited 2

Digital communications: fundamentals and applications

Digital communications: fundamentals and applications
On optimal call admission control in cellular networks

Wireless Networks
Cross-Layer combining of adaptive Modulation and coding with truncated ARQ over wireless links

IEEE Transactions on Wireless Communications
On the scalability of fixed broadband wireless access network deployment

IEEE Communications Magazine
An adaptive bandwidth reservation scheme for high-speed multimedia wireless networks

IEEE Journal on Selected Areas in Communications
Performance of CAC strategies for multimedia traffic in wireless networks

IEEE Journal on Selected Areas in Communications

A cross-layer elastic CAC and holistic opportunistic scheduling for QoS support in WiMAX

Computer Networks: The International Journal of Computer and Telecommunications Networking
A Cross-Layer Cognitive Radio-Based Framework and CAC Scheme in WiMAX Networks

Wireless Personal Communications: An International Journal

Quantified Score

Hi-index	0.00

Visualization

Abstract

For systems based on connection-oriented services, such as IEEE 802.16, call admission control (CAC) strategy is essential to provide a desired level of quality of service (QoS). Although many handoff-prioritized CAC schemes, which assume a fixed channel capacity, have been introduced, this assumption is not always valid for IEEE 802.16 that uses adaptive modulation and coding (AMC). With AMC, the modulation type of a user’s connection can be changed dynamically and the ongoing connection might fail due to the change of modulation. In this paper, we approach the AMC-induced CAC problem by focusing on the guaranteed connection. Three kinds of calls, new, handoff, and modulation-changed calls, are considered. We propose a modified guard channel CAC scheme that allows the modulation-changed and handoff calls to use the guard channel. Then we analyze a Markov model for the CAC scheme with long-term AMC in mind. According to the simulation results, the proposed approach reduces the call dropping probability for modulation-changed calls, which suggests the threshold of guard channels in IEEE 802.16 can be determined based on the proposed approach.