Paper Info
Title
Call Admission Control Scheme for Improved Quality of Service in WiMAX Communication at Vehicular Speeds
Abstract
The IEEE 802.16e standard, also known as mobile WiMAX, has emerged as an exciting mobile wireless communication technology that promises to offer both high throughput and guaranteed quality of service (QoS). Call admission control (CAC) scheme serves as a useful tool for WiMAX, which ensures that resources are not overcommitted and thereby, all existing connections enjoy guaranteed QoS. Existing CAC schemes largely depend on readily available information like currently available resources and bandwidth demand of the new call while making an acceptance or rejection decision once a new request arrives. Since wireless channels are not as reliable as wired communication, CAC scheme in WiMAX communication faces a serious challenge of making a right estimate of the usable channel capacity (i.e., effective throughput capacity) while computing the available resources in various communication scenarios. Existing CAC schemes do not consider the impact of mobility at vehicular speeds when computing the usable link capacity and available resources. In this paper, we propose a new CAC scheme that estimates the usable link capacity for WiMAX communication at various vehicular speeds and uses this information while making a CAC decision. The proposed CAC scheme takes the speed distribution model of a mobile node into account during the CAC decision making process. Simulation results confirm that the proposed scheme achieves lower dropping rate and improved QoS compared to existing schemes.
Year
DOI
Venue
2010
10.1109/GLOCOM.2010.5683126
GLOBECOM
Keywords
Field
DocType
WiMax,channel capacity,decision making,mobile radio,quality of service,radio links,telecommunication congestion control,CAC scheme,IEEE 802.16e standard,QoS,call admission control,decision making,link capacity,mobile WiMAX,mobile wireless communication,quality of service,usable channel capacity,vehicular speed
Mobile radio,Wireless,Call Admission Control,Computer science,Computer network,Quality of service,WiMAX,Real-time computing,Throughput,Wired communication,Mobile telephony
Conference
ISSN
Citations 
PageRank 
1930-529X
3
0.49
References 
Authors
9
2
Name
Order
Citations
PageRank
Iftekhar Ahmad17516.19
Daryoush Habibi28220.85