Scheduling in Cooperative UWB Localization Networks Using Round Trip Measurements

In this letter, we consider the scheduling and resource allocation problems in asynchronous ultra wideband cooperative localization networks, where the round trip measurements are applied for range estimation. A general non-data-aided cooperative scheduling strategy is first presented, where the reply signals can be identified by different frequency bands. Therefore, extra information, such as node IDs and processing times, is not required in the reply signals. We then perform resource optimization based on the scheduling strategy using a high accuracy approximate algorithm. Numeric results validate the analysis. We also find that the importance of cooperative localization increases if the anchors are badly deployed or suffer from significant blockages with agents.