HANDOVER MECHANISM FOR SENSOR NETWORKS

摘要

The present invention relates to methods and access devices for collecting data from a plurality of sensors (10) of a wireless sensor network, wherein a broadcast signal is transmitted by a master device (30) which currently collects the data, and wherein handover of data collection control from the current master access device to an alternate access device is initiated based on a result of the detection. The handover request signal is received at the master device and a handover reply is signaled to a source device of the handover request signal, the handover reply indicating the time at which data collection is handed over from the access device to the source device. Thereby, the master device can be changed in a flexible manner based on current environmental conditions.