Adhoc mobile power connectivity using a wireless power transmission grid

Wireless charging of devices has significant outcomes for mobile devices, IoT devices and wearables. Existing technologies consider using Point to Point type wireless transfer from a transmitter Tx (node that is sending Power) to a receiver Rx (node that receives power), which limits the area of coverage for devices. As a result, existing systems are forced to use near field coupling to charge such devices. Fundamental limitation is also that such methods limit charging to a small hotspot. In partnership with Wireless Electrical Grid LANs (WiGL pronounced “wiggle”), we demonstrate patented Ad-hoc mesh networking method(s) to provide wireless recharging at over 5 feet from the source, while allowing significant lateral movement of the receiver on the WiGL (Wireless Grid LAN or local area network). The transmitter network method leverages a series of panels, operating as a mesh of transmitters that can be miniaturized or hidden in walls or furniture for an ergonomic use. This disruptive technology holds the unique advantage of being able to provide recharging of moving targets similar to the cellular concept used in WiLAN, as opposed to prior wireless charging attempts, which only allow a hotspot-based charging. Specifically, we demonstrate the charging of a popular smartphone using the proposed system in the radiating near field zone of the transmitter antennas, while the user is free to move in the space on the meshed network. The averaged received power of 10 dBm is demonstrated using 1W RF-transmitter(s), operating in the 2.4 GHz ISM band. The proposed hardware consists of antennas arrays, rectennas, power management and USB 2.0 interfaces for maintaining a voltage between 4.2 and 5.3 V and smooth charging. We also show extending the wireless grid coverage with the use of multiple transmitting antennas, and mechanical beam-steering even further an increased coverage using the proposed system.

Enhanced Wireless Grid Technologies for the Harmonized Devices in Future IoT Systems

The paper proposes the enhanced wireless grid technologies for the future Internet of Things (IoT) systems. The paper shows a realization of the wireless grid by suitably exploiting the existing wireless Smart Utility Networks (SUN) that is standardized by IEEE 802.15.4g/4e task groups and is certified by Wi-SUN alliance. Medium Access Control (MAC) layer functions that is mainly defined by IEEE 802.15.4e standard and IEEE 802.15.10 recommended practice are effectively modified according to the assumed IoT services and satisfy the requirement of harmonized mesh activities by massive radio devices. In order to realize this function, SUN radio devices that exploit Layer 2 Routing (L2R) control scheme in IEEE 802.15.10 are employed to realize the autonomous mesh management function as well as the multiple service supporting function. The performance is evaluated through the experiments by employing the developed SUN devices as well as simulator evaluations. The paper also proposes novel data retransmission schemes by exploiting the data concatenation functions in IEEE 802.15.10 as well as evaluating its performances by computer simulations and experiments. Consequently, this paper confirms that the obtained results through both simulator evaluations and experiments matches to each other.