Method for estimating and signalling the density of mobile nodes in a road network
First Claim
1. A method of estimating a density of mobile nodes of an ad hoc network in which the mobile nodes move along roads of a particular geographical network, at least some mobile nodes being configured to locate themselves in the geographical network and configured to maintain an up-to-date neighbor table including information relating to positions of their neighboring mobile nodes, wherein a density of the mobile nodes on a road is determined by the steps of:
- subdividing said road into coverage cells;
executing an intracellular count at one of said coverage cells during which a mobile node located in a predetermined central area of a coverage cell comprising a principal node determines from its neighbor table local traffic density data; and
performing an aggregation, during which said principal node inserts the determined local traffic density data into a cell density packet.
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Accused Products
Abstract
A method and an associated device for estimating the density of mobile node traffic in an ad-hoc network on the roads of a predetermined geographical network in which mobile nodes move. Each road is divided into coverage cells. For each cell, a principal mobile node located at the center of the cell counts the number of nodes in the cell, and inserts this number into a cell density packet (CDP) transmitted from cell to cell during a first stage.
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Citations
14 Claims
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1. A method of estimating a density of mobile nodes of an ad hoc network in which the mobile nodes move along roads of a particular geographical network, at least some mobile nodes being configured to locate themselves in the geographical network and configured to maintain an up-to-date neighbor table including information relating to positions of their neighboring mobile nodes, wherein a density of the mobile nodes on a road is determined by the steps of:
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subdividing said road into coverage cells; executing an intracellular count at one of said coverage cells during which a mobile node located in a predetermined central area of a coverage cell comprising a principal node determines from its neighbor table local traffic density data; and performing an aggregation, during which said principal node inserts the determined local traffic density data into a cell density packet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 14)
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11. A wireless communications terminal configured to form a mobile node of an ad hoc network including mobile nodes moving on roads of a particular geographical network, said wireless communications terminal being associated with means for determining a location of said wireless communications terminal in the geographical network and means for maintaining an up-to-date neighbor table including information relating to positions of its neighboring mobile nodes, wherein said wireless communications terminal further includes:
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intracellular counting means for determining from its neighbor table local traffic density data at a coverage cell of a road divided into a plurality of said coverage cells, said intracellular counting means being utilized when the wireless communications terminal is located in a predetermined central area of said coverage cell; writing means for inserting said local traffic density data into a cell density packet; and means for receiving and transmitting said cell density packet.
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12. A process in which a computer executes instructions set forth in a computer program executing on a processor which, when used on the computer, causes the processor to estimate a density of mobile nodes of an ad hoc network in which the mobile nodes move along roads of a particular geographical network, the computer program comprising:
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program code for subdividing a road into coverage cells; program code for executing an intracellular count at one of said coverage cells during which a mobile node located in a predetermined central area of a coverage cell comprising a principal node determines, from its neighbor table, local traffic density data; and program code for performing an aggregation, during which said principal node inserts the determined local traffic density data into a cell density packet.
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13. A non-transitory computer-readable storage medium encoded with a computer program executed by a computer that causes estimation of a density of mobile nodes of an ad hoc network in which the mobile nodes move along roads of a particular geographical network, the computer program comprising:
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program code for subdividing said road into coverage cells; program code for executing an intracellular count at one of said coverage cells during which a mobile node located in a predetermined central area of a coverage cell comprising a principal node determines from its neighbor table local traffic density data; and program code for performing an aggregation, during which said principal node inserts the determined local traffic density data into a cell density packet.
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Specification