Transmitting data to and from nodes of a clustered multi-hop network with a TDMA scheme
First Claim
1. A method for transmitting data to and from nodes of a multi-hop network with a Time Division Multiple Access (TDMA) scheme,wherein the multi-hop network is clustered into a plurality of N clusters and each cluster of the plurality of N clusters includes a plurality of nodes, the method comprising:
- organizing the TDMA scheme into a plurality of periodic superframes,wherein each superframe of the plurality of periodic superframes comprises a number of frames including a broadcast frame and a collection frame for the plurality of N clusters;
sharing a dedicated communication channel by the plurality of N clusters in the broadcast frame,wherein each node uses the dedicated communication channel in the broadcast frame;
transmitting data using a plurality of N separate communication channels by the plurality of N clusters in the collection frame;
each cluster of the plurality of N clusters has one node acting as a base station of the cluster;
among a plurality of N base stations of the plurality of N clusters, one base station acts as a main base station;
the main base station uses the broadcast frame to distribute information via a single broadcast tree that spans over all of the plurality of nodes of the plurality of N clusters;
the collection frame uses a collection tree that spans over only the plurality of nodes that belong to the cluster in each cluster of the plurality of N clusters;
the plurality of nodes of the cluster uses the collection tree to exchange information with the base station of the cluster;
the broadcast tree and each collection tree in the multi-hop network is hierarchically arranged in a plurality of different levels;
the plurality of different levels include;
(i) one root node;
(ii) at least one parent node which is the parent of at least one child node, and(iii) at least one child node; and
the child node is arranged in a lower level than the parent node.
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Abstract
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.
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Citations
10 Claims
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1. A method for transmitting data to and from nodes of a multi-hop network with a Time Division Multiple Access (TDMA) scheme,
wherein the multi-hop network is clustered into a plurality of N clusters and each cluster of the plurality of N clusters includes a plurality of nodes, the method comprising: -
organizing the TDMA scheme into a plurality of periodic superframes, wherein each superframe of the plurality of periodic superframes comprises a number of frames including a broadcast frame and a collection frame for the plurality of N clusters; sharing a dedicated communication channel by the plurality of N clusters in the broadcast frame, wherein each node uses the dedicated communication channel in the broadcast frame; transmitting data using a plurality of N separate communication channels by the plurality of N clusters in the collection frame; each cluster of the plurality of N clusters has one node acting as a base station of the cluster; among a plurality of N base stations of the plurality of N clusters, one base station acts as a main base station; the main base station uses the broadcast frame to distribute information via a single broadcast tree that spans over all of the plurality of nodes of the plurality of N clusters; the collection frame uses a collection tree that spans over only the plurality of nodes that belong to the cluster in each cluster of the plurality of N clusters; the plurality of nodes of the cluster uses the collection tree to exchange information with the base station of the cluster; the broadcast tree and each collection tree in the multi-hop network is hierarchically arranged in a plurality of different levels; the plurality of different levels include; (i) one root node; (ii) at least one parent node which is the parent of at least one child node, and (iii) at least one child node; and the child node is arranged in a lower level than the parent node. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification