System and method of transmitting a message to a wireless limited node

摘要

Methods are provided for transmitting and receiving a message to or form a wireless limited node (10) in a wireless network (100) wherein the wireless limited node (10) is related to a coupled device (30) in the wireless network (100) and is able to receive data only within limited reception opportunities following transmission by the wireless limited node (10). The method of transmitting comprises noticing a need for transmitting the message to the wireless limited node (10), preparing the message to be transmitted, the coupled device (30) changing a physical parameter for triggering external activation of the wireless limited node (10), and after receiving a signal transmitted by the wireless limited node (10) upon said external activation, sending the message to be transmitted to the wireless limited node (10) within the limited reception opportunities. The method of receiving does not comprise the steps of preparing the message and transmitting it to the wireless limited node (10). In the method of receiving, the message to be received is part of the signal transmitted upon activation.

主权项

1. A method of transmitting a message to a wireless energy-harvesting node in a wireless network wherein the wireless energy-harvesting node is related to a coupled device in the wireless network and is able to receive data only within reception opportunities limited in time following transmission by the wireless energy-harvesting node, the method comprising:
noticing a need for transmitting the message to the wireless energy-harvesting node, preparation of the message to be transmitted, the coupled device changing a physical parameter for triggering external activation of the wireless energy-harvesting node, wherein the coupled device comprises a lamp and wherein the changing of the physical parameter comprises changing a light output condition selected from the group consisting of light intensity, light color, light direction, light beam width, light blinking pattern and a number of active light elements, and after receiving a signal transmitted by the wireless energy-harvesting node upon said external activation, sending the message to be transmitted to the wireless energy-harvesting node within the limited reception opportunities.