Nokia Networks Oy

Robotonchip Oy

Marko Lamminaho

Pekka T Soininen

Juha Sakari Korhonen

Eija Saario

Marko Heinila

Otto Pulkkinen

Jari Rahkala

Imre Kekesi

According to an example aspect of the disclosed embodiments, there is provided passive routing in a mesh network. One or more media frames from source nodes to target nodes in the mesh network are received. Routing information from a received media frame is derived, said routing information including a source node identifier, a target node identifier, a last node identifier and a frame identifier. The derived routing information is stored into a route ring buffer. A reverse route for the received media frame is determined. The received media frame is prevented from being forwarded in the mesh network, when the route ring buffer includes routing information corresponding to the reverse route.

Passive routing in mesh network

The invention relates to a method of channel allocation in a fixed radio link network. For each radio link to be commissioned channels, interference level measurement on each available channel of the frequency band is carried out. Based on the interference measurements, best transmission and reception channel for the link are selected. Thereafter, the radio link can be commissioned and measurements in the next radio link to be commissioned can be started. Instead of using a fixed and pre-set channel for the fixed radio link, a channel is assigned autonomously and automatically when commissioning the link, depending on interference measurement results and/or distance measurement results. The possibility for automatic channel selection decreases the amount of commissioning work by removing the need for detailed frequency planning and fixed channel setting at the factory for each radio.

Channel selection in a radio link system

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Espoo, Finland

Marko Lamminaho