Method of routing in an ad hoc network
First Claim
1. A method of routing information in a network having several communication nodes that may be mobile, the routing being done on a route between a source node and a destination node through a set of wireless communication links between the network nodes, the method comprising steps of:
- structuring a graph in each mobile node, by a link supervision entity on each mobile node, in a form of a bidirectional point-to-point (unicast two-way) link, obtaining substantially all the links Ri,j existing between two nodes Ni and Nj and to form sub-graphs during routing decisions, wherein arcs of these sub-graphs connecting two nodes, substantially share a same set of properties;
transmitting periodically, by the link supervision entity, packets including;
an identity of a sender node Ni; and
a list of the links Ri,j with neighboring node Nj, with characteristics of the links Ri,j;
receiving, by each link supervision entity, the transmitted packets;
determining, by each link supervision entity, all neighboring nodes in addition to any available communication resources in order to exchange packets therewithtransmitting, by a transport entity distributed on each node, information from the source node to the destination node as a function of a sub-graph selected by the source node; and
comparing, at a given node, the properties of the communications communication resources existing between this the given node and the expected properties of the links of the sub-graph considered and creating or breaking the logic links depending on whether or not the observed properties correspond to those expected.
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Abstract
A method for the routing of information in a network comprises several communication nodes that may be mobile, the routing being done by a route between a source node and a destination node through a set of wireless communication links between the nodes of the network, the entire set forming a graph wherein the method comprises at least one step in which the graph of the network is structured as a unicast two-way link in order to obtain the relationships existing between two nodes and form, during routing decisions, sub-graphs comprising arcs that connect two nodes, the arcs sharing one and the same set of properties.
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Citations
15 Claims
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1. A method of routing information in a network having several communication nodes that may be mobile, the routing being done on a route between a source node and a destination node through a set of wireless communication links between the network nodes, the method comprising steps of:
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structuring a graph in each mobile node, by a link supervision entity on each mobile node, in a form of a bidirectional point-to-point (unicast two-way) link, obtaining substantially all the links Ri,j existing between two nodes Ni and Nj and to form sub-graphs during routing decisions, wherein arcs of these sub-graphs connecting two nodes, substantially share a same set of properties; transmitting periodically, by the link supervision entity, packets including; an identity of a sender node Ni; and a list of the links Ri,j with neighboring node Nj, with characteristics of the links Ri,j; receiving, by each link supervision entity, the transmitted packets; determining, by each link supervision entity, all neighboring nodes in addition to any available communication resources in order to exchange packets therewith transmitting, by a transport entity distributed on each node, information from the source node to the destination node as a function of a sub-graph selected by the source node; and comparing, at a given node, the properties of the communications communication resources existing between this the given node and the expected properties of the links of the sub-graph considered and creating or breaking the logic links depending on whether or not the observed properties correspond to those expected. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification