An improved algorithm for the call admission control in wireless network using multi-agent system

الملخص EN

In this paper, the aim of providing mobiles with best services (e.g.

needed bandwidth) can be achieved by supporting every cell that has a base station with an intelligent agent.

Mobiles may enter a cell which does not have free bandwidth; we call this "Call dropping".

Lower Call Dropping percentage means better wireless network service.

A Multi-Agent system is used here to calculate the percentage of supporting a mobile with the needed bandwidth before it's reaching to next cells.

A previous research in this area [1] found that agents could be used to predict if mobiles would complete their calls without dropping or not.

The difference between this research and ours is that the first used "Shadow Cluster" technique where we used a technique called "Kalman Filter".

We got better results because the cells that cooperate in taking the decision of supporting the mobile with the needed bandwidth were reduced.

This is because Shadow Cluster concept taking in account all surrounding neighbor cells (needed and unneeded cells).

The results were about the percentage of Call Dropping at several cases.

In addition to that we uses Dijkstra algorithm in order to find an alternative save way for the mobile if it does not get a positive response.