Title:	BANDWIDTH MANAGEMENT IN MOBILE WIRELESS CELLULAR NETWORKS – FAIR SHARE SOLUTION
Author(s):	Khaja Kamaluddin
ISBN:	978-972-8924-56-0
Editors:	Nuno Guimarães and Pedro Isaías
Year:	2008
Edition:	Single
Keywords:	Bandwidth allocation, Bandwidth management, QOS
Type:	Full Paper
First Page:	307
Last Page:	314
Language:	English
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Paper Abstract:	Bandwidth management in mobile wireless cellular networks is a critical issue due to the mobility of source end system, line of sight problems and variation in signaling power. If the bandwidth is not managed properly, either it will get wasted or will not reach to the needy ones. Improper bandwidth utilization will increase the dropping probability of handover calls as well as blocking probability of locally generated calls. In order to accommodate more number of users the availability of bandwidth channels should be increased in the network and Service provider can generate more revenue with the efficient utilization of bandwidth in network. Many solutions have been proposed in maximum utilization of the resources in network. Presently available solutions are not enough to manage the resources properly in terms of reservation of resources for handover calls and allocation of resources to locally generated calls. In this paper bandwidth managed by fair share solution is proposed. In this fair share scheme, bandwidth, which is not utilized by fewer mobile nodes will be allocated to the needy ones. In order to maintain the QOS (Quality of Service) for higher priority handover call (multimedia call), focus here is to allocate the required bandwidth to this call and maintain constant during its connection life time. For lower priority handover call (data call) at least minimum bandwidth will be allocated in the worst case scenario. The unutilized bandwidth will be distributed fairly among active lower priority nodes which will be utilized later by either handover calls or incoming local calls. With this method maximum bandwidth in the cell will be utilized, will remain available whenever new call, either handover or locally generated comes in and the wastage of network resources could be avoided. Dropping probability of handover calls will be reduced to minimum and blocking probability of newly generated calls will be maintained to minimum by this method. In this scheme Quality of service (QOS) could be maintained for multimedia call and flexible in changing the bandwidth for data calls will keep the network always in maximum utilization of network resources.
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