Document Type : Original Research Paper


1 Faculty of Electrical Engineering - Shahid Rajaei Teacher Training University of Tehran,Iran

2 Faculty of Engineering - Islamic Azad University, South Tehran Branch,Tehran,Iran

3 Islamic Azad University, South Tehran Branch,Tehran,Iran


For cellular mobile users, forced disconnection of a conversation is more undesirable than blocking and rejecting initial communication requests. Various traffic prioritization schemes seek to reduce the forced disconnection of conversations that require channel replacement.
In this paper, while reviewing and presenting conventional methods without prioritization, with FIFO and MBPS queuing, with a reserved channel and a combination with queuing and reserved channel, a mobile cellular telecommunication system is considered by considering two types of initial requests and in Now, the connection needs to be replaced, the simulation has been simulated and the results of simulating different methods have been extracted according to the conventional evaluation criteria "probability of forced disconnection" and "probability of blockages" and a comparison has been made between these methods. The results of simulations presented in this study show that the MBPS queuing method is better than the FIFO method and these two methods, while having the possibility of optimal traffic jams, have a much lower probability of forced disconnection than the non-prioritized method.
The combined method works better than the reserved channel method because it has the advantages of the reserved channel method and does not have long queues. The results of this study will be useful in selecting the appropriate method and considering the key parameters of each method such as the length of the queue in the queuing methods and the number of channels reserved in the methods based on the reserved channel.


Main Subjects

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