Admission Control in Wireless Multihop Networks

Admission control is an essential part of a traffic management system. Allowing more traffic into a wireless network than can be supported will only lead to congestion and performance degradations. In this report we consider admission control in wireless TDMA-based multihop networks with distributed functionality. No centralized node with complete knowledge of the resources will be able to take the admission control decisions. Instead the decisions are taken in the individual nodes. This also means that no merged synchronized knowledge about network resources is available. We investigate how delay-sensitive traffic sessions over different path lengths are served with and without admission control. The results show the importance of admission control. Moreover, we propose and investigate how admission control can be modified so that traffic sessions can be supported fairly when they have different path lengths.