Protocol for reliable, self-organizing, low-power wireless network for security and building automation systems
AssigneeRobert Bosch GmbH
InventorsFalk Herrmann, Arati Manjeshwar, Jason Hill
Life of this patent
Estimating the term…
Abstract
A method to wirelessly network a sensor/actuator node is described. The sensor/actuator node is installed in a sensor/actuator node network and arranged in a hierarchical manner with a plurality of node levels and a cluster head network. A unique node identifier is assigned to the sensor node and the sensor node network is initialized. The sensor node is woken-up to perform a task and then set to an active low power mode.
Claims49
A method to wirelessly network a sensor node, comprising:
- installing the sensor node in a sensor node network arranged in a hierarchical manner with a plurality of node levels and a cluster head network;
- assigning a unique identifier to the sensor node;
- initializing the sensor node network;
- waking-up the sensor node to perform a task;
- and
- setting the sensor node to an active low power mode after one of initialization and performing the task.
A method for initializing a sensor node network arranged in a hierarchical manner with a plurality of node levels and a cluster head network, comprising:
- establishing a temporary topology and synchronizing the sensor node network;
- discovering and assessing at least one link of the sensor node network;
- and
- registering a sensor node of the sensor node network with a cluster head of the cluster head network.
A method for monitoring an RF channel of a transmission link for a sensor node of a sensor node network, comprising:
- performing a RSSI reading;
- searching a preamble for a characteristic RF wakeup sequence;
- searching for a valid start sequence;
- reading a packet header of an incoming packet;
- performing a task according to contents of the incoming packet;
- and
- setting the sensor node to an active low power mode;
- wherein the characteristic RF wakeup sequence is segregated among multiple RF channels according to tasks to be performed by the sensor node, the tasks being assigned relative priorities so that the tasks are monitored at different frequencies according to a respective required latency.
A method for operating a sensor node network arranged in a hierarchical manner with a plurality of node levels and a cluster head network, comprising:
- waking-up a sensor node;
- transmitting a message;
- and
- setting the sensor node to an active low power mode.
Dependencies are inferred from the claim text.