Dynamic threshold call admission control policy of multi-service wireless cellular networks : a statistical approach

2004 ◽  
Author(s):  
Yik Keung
Keyword(s):  
Cellular Networks ◽  
Admission Control ◽  
Call Admission Control ◽  
Statistical Approach ◽  
Control Policy ◽  
Dynamic Threshold ◽  
Wireless Cellular Networks ◽  
Call Admission ◽  
Admission Control Policy

scholarly journals A Novel Call Admission Control Policy Using Mobility Prediction and Throttle Mechanism for Supporting QoS in Wireless Cellular Networks

2011 ◽  
Vol 2011 ◽  
pp. 1-11 ◽  
Author(s):  
Chen-Feng Wu ◽  
Liang-Teh Lee ◽  
Hung-Yuan Chang ◽  
Der-Fu Tao
Keyword(s):  
Cellular Networks ◽  
Admission Control ◽  
Call Admission Control ◽  
Blocking Probability ◽  
Control Policy ◽  
Data Mining Technique ◽  
Wireless Cellular Networks ◽  
Call Blocking Probability ◽  
System Utilization ◽  
Call Admission

The decision of call admission becomes an important work owing to the scarce wireless spectrum for wireless cellular networks. If there exists adequate information for call admission control (CAC) schemes, the terms of quality of service (QoS), such as call dropping probability (CDP), call blocking probability (CBP), and system utilization, will be kept in a certain acceptable level. Therefore, a prediction system which can predict most information, such as system utilization and CDP, in advance with a novel data mining technique and a distributed CAC scheme is presented in this paper. Based on the prediction results and the bandwidth consumption of adjacent cells, the proposed CAC scheme is able to decide to admit a new call. The throttle flag that can indicate the usage of current cell is proposed to prevent the newly admitted call request from being blocked in adjacent cells if handoff is needed. The simulation results show that the proposed CAC scheme can maintain the CDP below a predefined threshold, and the CBP is also lower than the cluster prediction and traditional guard channel policies.

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