International Business Machines Corporation

Clemens Lombriser

Hong Linh Truong

Urs Hunkeler

Methods and systems for discovery of a set of nodes in a network. The method includes selecting a node amongst nodes in a group of nodes to be processed, implementing a discovery procedure for the selected node, including broadcasting a neighbor discovery request from a node currently selected on a shared transmission medium of the network, receiving at the node currently selected replies sent by neighbor nodes on the shared transmission medium and adding the neighbor nodes to the group of nodes to be processed and repeating the steps of selecting and instructing for other nodes in the group of nodes to be processed, until all nodes of the set are discovered. Implementing a link probing procedure after the discovery procedure, including sending one or more link probing messages for a measure of link quality and receiving replies comprising data related to the measure of link quality.

Discovery of a set of nodes in a network

Methods and systems for discovery of a set of nodes in a network. The method comprises selecting a node amongst nodes in a group of nodes to be processed; and instructing to implement a discovery procedure for the selected node. The procedure comprises broadcasting a neighbor discovery request from a node currently selected on a shared transmission medium of the network; and receiving at the node currently selected replies sent by neighbor nodes on the shared transmission medium and adding the neighbor nodes to the group of nodes to be processed; and repeating the steps of selecting and instructing for other nodes in the group of nodes to be processed, until all nodes of the set are discovered.

A method for transmitting data to and from nodes of a multi-hop network with a Time Division Multiple Access (TDMA) scheme is suggested. The network is clustered into N clusters, wherein each cluster of the N clusters has at least one of the nodes. In a first step, the TDMA scheme is organized by periodic superframes. Each superframe of the periodic superframes has a number of frames including at least one broadcast frame and one collection frame for the N clusters. In a second step, one dedicated communication channel is shared by the N clusters within the broadcast frame. In a third step, N separate communication channels are used by the N clusters within the collection frame.

Transmitting data to and from nodes of a clustered multi-hop network with a TDMA scheme

Methods and systems for discovery of a set of nodes () in a network (). The method comprises

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Thalwil, Switzerland

Clemens Lombriser