Utilization Optimization for OVSF Multi-code Assignment in WCDMA Networks

ASIAIR > Asia University Journals > Asian Journal of Health and Information Sciences > v.2 n.1-4 > Item 310904400/3102

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Title:	Utilization Optimization for OVSF Multi-code Assignment in WCDMA Networks
Authors:	Department of Computer Science and Information Engineering, Asia University
Contributors:	Department of International Business
Keywords:	WCDMA;OVSF code;multi-code
Date:	2007
Issue Date:	2009-11-16 11:34:04 (UTC+0)
Publisher:	Asia University
Abstract:	Radio resources, such as WCDMA OVSF codes, are scarce and valuable in cellular mobile networks, necessitating the need for their efficient use by network operators. Many OVSF code-assignment schemes for WCDMA networks have been widely studied. This paper proposes an evaluation model to accurately predict OVSF multi-code assignment performance in WCDMA networks. Theoretical and simulation results indicate that the proposed analytical model works to evaluate the multi-code assignment performance. Two important performance measures, call blocking probability (CBP) and bandwidth utilization (BU), are then adopted to solve a utilization optimization problem for WCDMA network planning and re-planning. The optimization problem applies a given traffic statistic and a specified maximum CBP constraint to maximize the BU by discovering the optimal number of basic-rate codes in a Node-B. Consequently, the operators will be able to use the results to deploy their codes flexibly, and to improve their profitability.
Relation:	Asian Journal of Health and Information Sciences 2(1-4):49-65
Appears in Collections:	[Asian Journal of Health and Information Sciences] v.2 n.1-4

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