| Popis: |
Consider an area, such as a shopping mall, which is covered by a network of micro-cells. Assume a user entering this area to have a packet that he wishes to transmit during his/her residence time in the area. The user spends a limited period of time (system time) moving across the area while visiting through a number of cells. We consider a number of access control algorithms that regulate the transmission of user packets. Performance measures include: system throughput, user blocking probability (expressing the probability that the user is not able to transmit the packet) and the packet delay (for transmitted packets). We analyze and compare three access algorithms by considering an area that consists of three cells. The algorithms are differentiated by providing different access priorities to users based on their time left in the system. We can also modify the priority level to include differentiation between new arrivals and handoff users. |
