Abstract: This disclosure provides methods, devices, and systems for wireless communications. The present implementations more specifically relate to techniques for detecting a reachability of portable devices in a digital enhanced cordless telecommunications (DECT) ultra low energy (ULE) home automation networks (HAN). In some aspects, a base station may determine that a portable device is unreachable after failing to receive an ACK from the device after a threshold number of retransmissions or a threshold amount of time has elapsed. Upon determining that a portable device is unreachable, the base station may remove any messages intended for the device from its transmission queue and may refrain from processing any further transmissions to the device. A base station may determine that a portable device is reachable again after receiving a communication from the device. In some implementations, a base station may notify a host application or processor about the reachability of the portable devices.

Abstract: This disclosure provides methods, devices, and systems for wireless communications. The present implementations more specifically relate to range extenders for digital enhanced cordless telecommunications (DECT) ultra low energy (ULE) home automation networks (HANs) that can extend the range of wireless communications without increasing the power consumption of portable devices. In some aspects, a ULE range extender may include a fixed part (FP) component configured to communicate with one or more portable devices, and a portable part (PP) component configured to communicate with a base station. In some implementations, the FP component may receive an uplink message from a portable device via a first link and may immediately release the first link upon receiving the uplink message. The PP component transmits the uplink message to the base station via a second link and releases the second link upon receiving confirmation that the uplink message has been received by the base station.