A system for wireless power networking, preferably including one or more nodes, such as transmit nodes, receive nodes, relay nodes, and/or hybrid nodes. The system may function to form a power network (e.g., mesh network) configured to transfer power wirelessly between nodes of the system. A method for wireless power networking, preferably including transmitting power, controlling relay nodes, and/or receiving power, and optionally including optimizing power network operation. The method is preferably performed at (e.g., by one or more nodes of) the system, but can additionally or alternatively be performed by any other suitable system(s).

This document generally relates to use of intelligent reflecting devices in wireless communication systems, which may increase the coverage for a wireless access node or base station. An intelligent reflecting device may configure its surface with a degree of reflection according to a reflection scheme, and in turn, the surface may reflect an incident signal according to the reflection scheme. As a result, the reflected signal may have one or more characteristics that indicate to a receiving device that the received signal was reflected by an intelligent reflecting device, and/or one or more characteristics of the intelligent reflecting device.

This document generally relates to use of intelligent reflecting devices in wireless communication systems, which may increase the coverage for a wireless access node or base station. An intelligent reflecting device may configure its surface with a degree of reflection according to a reflection scheme, and in turn, the surface may reflect an incident signal according to the reflection scheme. As a result, the reflected signal may have one or more characteristics that indicate to a receiving device that the received signal was reflected by an intelligent reflecting device, and/or one or more characteristics of the intelligent reflecting device.

A method of operating a transmitter node (101) configured to communicate with one or more receiver nodes (102-104) using a re-configurable reflective device, RRD (109), is provided. The RRD (109) is re-configurable to provide multiple spatial filters, each one of the multiple spatial filters being associated with a respective spatial direction (351-353) into which incident signals are selectively reflected by the RRD (109). The method includes repeatedly transmitting reference signals (198) towards the RRD (109) at one or more transmit periods (551-554). The method also includes setting the one or more transmit periods (551-554) based on a re-configuration timing (510) of the RRD (109), the re-configuration timing (510) defining a dwell time (511-513) of the RRD (109) for providing each one of the multiple spatial filters, to thereby counteract a change of one or more receive periods (531) of the reference signals (198) at at least one receiver node (102) of the one or more receiver nodes (102-104) caused by the re-configuration timing (510).

A method of operating a transmitter node (101) configured to communicate with one or more receiver nodes (102-104) using a re-configurable reflective device, RRD (109), is provided. The RRD (109) is re-configurable to provide multiple spatial filters, each one of the multiple spatial filters being associated with a respective spatial direction (351-353) into which incident signals are selectively reflected by the RRD (109). The method includes repeatedly transmitting reference signals (198) towards the RRD (109) at one or more transmit periods (551-554). The method also includes setting the one or more transmit periods (551-554) based on a re-configuration timing (510) of the RRD (109), the re-configuration timing (510) defining a dwell time (511-513) of the RRD (109) for providing each one of the multiple spatial filters, to thereby counteract a change of one or more receive periods (531) of the reference signals (198) at at least one receiver node (102) of the one or more receiver nodes (102-104) caused by the re-configuration timing (510).

A tag enhances vehicle radar visibility of objects by increasing the effective radar cross-section of the object, allowing detection at longer ranges and providing the vehicle/driver with more time to avoid a collision. The tag may include a receive antenna and a bandpass filter configured to receive a signal from the receive antenna and to allow a portion of the frequency range of the signal from the receive antenna through. The tag may also include an amplifier configured to receive and amplify the signal with the portion of the frequency range from the bandpass filter. The tag may further include a transmit antenna configured to transmit the amplified signal. The receive antenna, the transmit antenna, and the amplifier may be configured such that antenna-to-antenna isolation between the receive antenna and the transmit antenna is greater than a gain of the amplifier.

In a particular embodiment, an apparatus is disclosed that includes a battery pack structure that includes a plurality of battery cells. The apparatus also includes wireless battery management system that includes a first wireless communication device, a second wireless communication device, and a radio frequency passive repeater. The radio frequency passive repeater includes a conductor cable, a first antenna at a first end of the conductor cable, and a second antenna at the second end of the conductor cable. In this example embodiment, the first antenna is located within a first wireless signal reception zone of the first wireless communication device and the second antenna is located within a second wireless signal reception zone of the second wireless communication device.

In a particular embodiment, an apparatus is disclosed that includes a battery pack structure that includes a plurality of battery cells. The apparatus also includes wireless battery management system that includes a first wireless communication device, a second wireless communication device, and a radio frequency passive repeater. The radio frequency passive repeater includes a conductor cable, a first antenna at a first end of the conductor cable, and a second antenna at the second end of the conductor cable. In this example embodiment, the first antenna is located within a first wireless signal reception zone of the first wireless communication device and the second antenna is located within a second wireless signal reception zone of the second wireless communication device.

A reflective surface for directing wireless communications signals that includes a plurality of independently reconfigurable elements disposed irregularly on the surface is disclosed. A method of controlling a communication channel of a wireless communication system that includes the reflective surface having an irregular element arrangement is also disclosed.

A reflective surface for directing wireless communications signals that includes a plurality of independently reconfigurable elements disposed irregularly on the surface is disclosed. A method of controlling a communication channel of a wireless communication system that includes the reflective surface having an irregular element arrangement is also disclosed.