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Dynamic metropolitan area mobile network

  • US 7,280,519 B1
  • Filed: 01/07/2003
  • Issued: 10/09/2007
  • Est. Priority Date: 01/08/2002
  • Status: Active Grant
First Claim
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1. A method for establishing a route in a communications network comprising the steps of:

  • (1) providing a network comprised of a plurality of communications nodes, each communications node within a containing cell, wherein at least one communications node is a source node;

    each source node possessing a route evaluation function and a destination region specified by a center cell and a radius;

    (2) each communications node that is a source node performing the steps of;

    (A) initiating region casting, if the containing cell of the source node is the same as the center cell of the destination region;

    said region casting being of increasing radius outward from the center cell;

    (B) determining route constraint parameters and route configuration attributes based on the route evaluation function;

    (C) initiating node-hopping to the center cell of the destination region, if route configuration stipulates a completely wireless route between the source node and the center cell of the destination region;

    said node-hopping conducted within route constraints from and to wireless communications nodes;

    (D) selecting a compatible way point communications node if the determined route configuration dictates that the route should pass through a way point communications node;

    (E) initiating diffusion searching for the compatible way point communications node and its tentative containing cell, if the determined route configuration dictates that the route should pass through the way point communications node and if the containing cell of the way point communications node is unavailable; and

    (F) initiating the node-hopping to the tentative containing cell of the way point communications node, if the route configuration dictates that the route should pass through said way point communications node and if the tentative containing cell of the way point communications node is available;

    said node-hopping conducted within the route constraints;

    (3) each communications node performing the steps of;

    (A) determining a unique surface position;

    (B) determining a containing cell from the determined surface position;

    (C) listening for and replying to packets requiring a response;

    (D) continuing the region casting when compatibility requested until region boundary is reached;

    (E) continuing the node-hopping when the compatibility requested until the node contained in the center cell of the destination region is reached;

    (F) continuing node-hopping when compatibility requested until node contained in the way point'"'"'s tentative containing cell is reached;

    (G) initiating the region casting when a node is nominated as the region cast initiator;

    (H) continuing the diffusion searching when the compatibility requested until the compatible way point communications node is found or until the diffusion search boundary is reached; and

    (I) initiating diffusion searching when a node is nominated as a diffusion search initiator;

    (4) each way point communications node, that is not an entrance gateway, becomes the source node and the method continues at (2); and

    (5) each way point communications node that is the entrance gateway node, performing the steps of;

    (A) determining an exit gateway node proximate to the center cell of the destination region; and

    (B) transmitting a packet to the exit gateway node.

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