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: Multi-channel listening capable receiver capable of operating on one of K data channels and method of operating such a receiver. A local oscillator (2) is provided for tuning the receiver (1) to one of the channels within a channel switching time Ts, as well as a processing unit (9) arranged to detect a presence of a preamble on the tuned channel. The processing unit (9) is further arranged to switch over the local oscillator (2) to a next one of the data channels if no presence of a preamble is detected within a single preamble symbol duration Tp. The channel switching time is a fraction ? of a single preamble symbol period Tp. The number of data channels K fulfills the condition K<floor (N?1?(K*?)) to be able to receive all relevant data packets on the K channels, after being triggered by reception of the preamble.

Abstract: Multi-channel listening capable receiver capable of operating on one of K data channels and method of operating such a receiver. A local oscillator (2) is provided for tuning the receiver (1) to one of the channels within a channel switching time Ts, as well as a processing unit (9) arranged to detect a presence of a preamble on the tuned channel. The processing unit (9) is further arranged to switch over the local oscillator (2) to a next one of the data channels if no presence of a preamble is detected within a single preamble symbol duration Tp. The channel switching time is a fraction ? of a single preamble symbol period Tp. The number of data channels K fulfills the condition K<floor (N?1?(K*?)) to be able to receive all relevant data packets on the K channels, after being triggered by reception of the preamble.

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: 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.