Improvements to body area networks
AssigneeFujitsu Limited
InventorSaied Abedi
Life of this patent
Estimating the term…
Abstract
A communication method in a wireless sensor system of networks served by a first non-beacon mode coordinator and a second beacon-mode coordinator, initially, placing all network devices in a first network of the first coordinator; monitoring a parameter of each entity by sensors of the network devices; transmitting sensor data from the network devices in the first network to the first coordinator; detecting an emergency state with respect by using the monitored parameters; in response to detection of the state, handing over the network devices to the second network; transmitting sensor data from the network devices in the second network to the second coordinator; and in response to detection of the emergency state, handing over the associated network devices to the first network.
Claims11
A wireless sensor system comprising a plurality of network devices placed in a first network served by a first coordinator, one or more parameters of an entity being monitored by sensors of the associated network devices, sensor data being transmitted from the network devices in the first network to the first coordinator;
- detecting starting or ending of an emergency state with respect said entity by using the monitored parameters, the first coordinator arranged to perform non-beacon-mode communication with a first subset of the network devices transmitting sensor data to the first coordinator, and a second coordinator arranged to perform beacon-mode communication with a second subset of the devices transmitting sensor data to the second coordinator after a handover of communication responsibility in an emergency state, the system having means for determining which of the network devices to include in the first or second subsets in dependence upon whether the emergency state exists with respect to the devices.
A method of performing communications of network devices in a wireless sensor system formed of respective networks served by a first coordinator for non beacon-mode communication and a second coordinator for beacon-mode communication, the network devices associated with at least one entity to be monitored and the method comprising steps of:
- placing all the network devices in a first network served by the first coordinator;
- monitoring one or more parameter of the or each entity by sensors of the associated network devices;
- transmitting sensor data from the network devices in the first network to the first coordinator;
- detecting starting or ending of an emergency state with respect to a said entity by using the monitored parameters;
- in response to detection of starting of the emergency state with respect to a said entity, handing over the associated network devices to the second network;
- transmitting sensor data from the network devices in the second network to the second coordinator;
- and
- in response to detection of ending of the emergency state with respect to a said entity, handing over the associated network devices to the first network.
Dependencies are inferred from the claim text.