Performance of Cooperative and Non-Cooperative Detect And Avoid Procedures for UWB

Detect and avoid procedures (DAA) aim at improving ultra-wideband (UWB) coexistence with narrowband-wideband devices operating at the same time and in the same area. UWB is commonly considered as a secondary radio system. As a consequence interference due to UWB has to be kept under control. To this aim it was shown that by properly tuning DAA parameters UWB interference could be kept below the limits issued by regulatory bodies. Non-cooperative DAA procedures can lead to severely reduced performance of UWB networks. The possibility of integrating UWB devices on the same board of the victim device has opened the way to the definition of more efficient DAA procedures, indicated as cooperative DAA, guaranteeing better coexistence performance as well as an improved UWB throughput. In this paper we present a cooperative DAA procedure and we compare its performance with the non-cooperative one under the same operating scenario. It is shown that the DAA procedure can significantly outperform the non-cooperative DAA.