CPC Class H04W

A system for prevention of accidents by a hazardous machine. The system is comprised of a first subsystem on the machine, and a second subsystem wearable by a party to be protected. The first subsystem includes a base unit transceiver, and a processor in communication with the base unit transceiver, and in communication with a controller of the energy conversion device. The second subsystem includes a protected party remote transceiver in communication with the base unit transceiver. The processor executes an algorithm including detecting the location of the protected party remote transceiver relative to the base unit transceiver; determining if the location of the protected party remote transceiver relative to the base unit transceiver is less than a predetermined threshold distance; and halting operation of the energy conversion device of the protected party remote transceiver relative to the base unit transceiver is located at less than the threshold distance.

Systems and methods for using radio frequency signals and sensors to monitor environments (e.g., indoor environments) are disclosed herein. In one embodiment, a system for providing a wireless asymmetric network comprises a hub having one or more processing units and at least one antenna for transmitting and receiving radio frequency (RF) communications in the wireless asymmetric network and a plurality of sensor nodes each having a wireless device with a transmitter and a receiver to enable bi-directional RF communications with the hub in the wireless asymmetric network. The one or more processing units of the hub are configured to execute instructions to determine at least one of motion and occupancy within the wireless asymmetric network based on a power level of the RF communications.

A communication device of handling power saving comprises a storage unit for storing instructions and a processing means coupled to the storage unit. The processing means is configured to execute the instructions stored in the storage unit. The instructions comprise transmitting a first message comprising capability information to a first network entity, wherein the capability information indicates a plurality of power saving modes of the communication device; selecting a power saving mode from the plurality of power saving modes; and transmitting a second message comprising the power saving mode and at least one power saving parameter related to the power saving mode to a second network entity.