Abstract: An ultra low power wireless node (50) sends (100) a packet on at least two radio channels to a network of backbone nodes (65, 70, 75, 80). Which of the radio channels are listened for at the backbone nodes is allocated (130) according to detected reception performance. The allocating is coordinated for different ones of the backbone nodes. By combining sending on multiple radio channels with dynamically allocating the listening channels according to reception performance and with coordinated allocations for different backbone nodes, the spatial diversity and channel diversity of the separate receiving locations can be exploited. This can make the system more resilient to time varying location specific interference or channel specific interference for example.

Abstract: A wireless system (10) comprises an initiator device (11) and a plurality of responder devices (15-18) which can bind with the initiator device (11). The method comprises, at one of the plurality of responder devices, receiving (101) a discovery request from the initiator device and forming a discovery response and sending the discovery response to the initiator device. The step of forming a discovery response comprises: collecting (102) at least two parameters indicative of the initiator device wanting to bind with the responder device; computing (103) a score using the at least two parameters, the score being indicative of a likelihood of the initiator device wanting to bind with the responder device; and including (104) the score as an element of the discovery response.

Abstract: A wireless system (10) comprises an initiator device (11) and a plurality of responder devices (15-18) which can bind with the initiator device (11). The method comprises, at one of the plurality of responder devices, receiving (101) a discovery request from the initiator device and forming a discovery response and sending the discovery response to the initiator device. The step of forming a discovery response comprises: collecting (102) at least two parameters indicative of the initiator device wanting to bind with the responder device; computing (103) a score using the at least two parameters, the score being indicative of a likelihood of the initiator device wanting to bind with the responder device; and including (104) the score as an element of the discovery response.

Abstract: A wireless system (10) comprises an initiator device (11) and a plurality of responder devices (15-18) which can bind with the initiator device (11). The method comprises, at one of the plurality of responder devices, receiving (101) a discovery request from the initiator device and forming a discovery response and sending the discovery response to the initiator device. The step of forming a discovery response comprises: collecting (102) at least two parameters indicative of the initiator device wanting to bind with the responder device; computing (103) a score using the at least two parameters, the score being indicative of a likelihood of the initiator device wanting to bind with the responder device; and including (104) the score as an element of the discovery response.

Abstract: A communication protocol based on CSMA between a node, in particular an electronic label, and a network coordinator is disclosed. The node comprises: a transceiver provided for communication with a network coordinator, wherein the transceiver handles a transmission channel based on CSMA; a processing unit provided for processing data received via the transmission channel and displaying the data on a display unit. The electronic label is arranged to perform: sending recurrently a data request packet; going to a low power mode after sending the data request packet; and waking-up for receiving a data response packet a predefined time interval after beginning sending the data request packet. The network coordinator is arranged to transmit the data response packet the predefined time interval after receiving the beginning of the data request packet.