Admission control in wireless multihop networks

Admission control is an essential part of a traffic management system. Overloading the network will only lead to congestion and performance degradations. The paper investigates how to design admission control in wireless TDMA-based multi-hop networks. Key components are the estimation of the available resources and how to coordinate the usage of these resources among the nodes. To increase robustness we use a resource margin to deal with uncertainties in the resource estimates. The traffic consists of a mix of two types: prioritized delay-sensitive traffic and background traffic. The investigation focuses on the robustness of different admission control methods. Fairness is also included. In particular, we consider how well the delay-sensitive traffic sessions over different path lengths are served. Moreover, we propose a method so that traffic sessions can be supported fairly when they have different path lengths.