Abstract
In cellular networks, call blocking causes lower customer satisfaction and economic loss. Therefore, the channel allocation for call block avoidance is an important issue. This study proposes a mechanism that considers the real-time traffic information (e.g., traffic flow and vehicle speed) and the user behavior (e.g., call inter-arrival time and call holding time) to analyze the adaptable number of communication calls in the specific cell for channel allocation. In experiments about call block probabilities (CBP), this study simulated two cases that are the situations of the whole day and traffic accident. The simulation results show that all CBPs in the scenario of whole day are less than 21.5% by using the proposed mechanism, which is better than using the static channel allocation (SCA) mechanism. Moreover, all CBPs in the scenario of traffic accidents are less than 16.5% by using the proposed mechanism, which is better than using the SCA mechanism. Therefore, the proposed mechanism can decrease the number of CBPs effectively.
Highlights
In recent years, the rise in economic growth and information technology advancement has improved the quality of personal communication systems (PCS)
During the traffic accident period in Cell6, this study discovered that the call block probabilities (CBP) derived by using the proposed mechanism and static channel allocation (SCA) mechanism have little difference because the amount of traffic flow and the number of handovers are rare
This study can adopt the information of traffic flow to solve the problem of channel allocation in PCS
Summary
The rise in economic growth and information technology advancement has improved the quality of personal communication systems (PCS). As the number of mobile stations (MS) rises, how to provide the high quality of service in cellular systems has become a big challenge. The structure of the cellular network is the connective coverage of the cell. Every cell only has limited channels to provide communication services. Global System for Mobile Communications (GSM) and Universal Mobile Telecommunications System (UMTS) are well known[1,2,3,4]. They can decide whether to accept the call or not depending on the available number of the channels. When an MS wants to communicate with another user, it must first obtain a free channel provided by BS
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