COGNITIVE MOBILE TIME DIVISION DUPLEX AD-HOC NETWORK

• US 20130089011A1
• Filed: 10/08/2012
• Published: 04/11/2013
• Est. Priority Date: 10/11/2011
• Status: Active Grant

• Current Assignee: Vislink Technologies, Inc.
• Original Assignee: xG Technology, Inc.
• Inventors: ALAPURANEN, PERTTI
• Granted Patent: US 9,236,999 B2
• Time in Patent Office: Days
• US Class Current: 370/294
• CPC Class Codes: H04L 5/0028 Variable division signaling therefor H04L5/0092
• CPC Class Codes: H04L 5/005 of common pilots, i.e. pilots destined for multiple users or terminals
• CPC Class Codes: H04L 5/1484 operating bytewise
• CPC Class Codes: H04W 40/24 Connectivity information management, e.g. connectivity discovery or connectivity update
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

A cognitive MANET system is disclosed that uses TDD (Time Division Duplexing) and TDMA MAC to maintain routes that allow delivery of adequate bandwidth for applications resulting in an efficient way of maintaining information on neighboring wireless terminals and access points by using a routing protocol that has a built in slot reservation algorithm.

Claims

1. ) A method using a Media Access Control message framing protocol having super frames and mobile nodes to create a cognitive mobile time division duplex Ad-Hoc network for sending message packets from originating mobile nodes to message packet destination mobile nodes comprising:

first, said Media Access Control message framing protocol super frame being divided into two frames times wherein a first frame time can operate in a master mode while a second frame time can operate in a slave mode; and

,

then, wherein each of said frame times can operate on different channels and the order of transmit and receive timeslots of said first frame time and said second frame time can be dynamically changed.

2. ) The method using said Media Access Control message framing protocol of claim 1 further comprising;

said super frame having a timeslot reserved for randomly transmitted beacon messages;

then, each mobile node of said mobile nodes having a routing table that contains time division duplex frame and channel information for message packet destinations associated with said mobile node;

then, each said mobile node having a neighbor table that contains time division duplex frame and channel information for all potential or previously used mobile node destinations wherein said neighbor table time division duplex frame and channel information is updated by each said mobile node using beacon messages sent by other mobile nodes within transmission range of said updating mobile node; and

,

then, each of said mobile nodes operating as both a master mobile node coordinating time slot allocations and channel access over a transmission area and a slave mobile node being coordinated by a master mobile node.

3. ) The method using said Media Access Control message framing protocol of claim 2 further comprising;

then, each of said originating mobile nodes, when originating a request for a transmission route for a message packet, sending a route request message to a destination mobile node with a time division duplex frame and channel information field having one or more elements that contain available frame timing and frequency channels wherein said time division duplex frame and channel information contains one or more elements when sent by said originating mobile node and two or more elements when said route request message is forwarded by a mobile node forwarding said route request message to said destination mobile node; and

,

then, when a message packet route is determined, a route reply message being sent from said destination mobile node back to said originating mobile node and said time division duplex frame and channel information contained in said elements being used to update said routing table of said mobile nodes along the determined message packet route.

4. ) The method using said Media Access Control message framing protocol of claim 2 further comprising;

using proxy hello messages wherein when a slave mobile node is associated to a master mobile node said slave mobile node can request a proxy hello message from a master mobile node containing a list of all the mobile nodes that are in communication with the master mobile node allowing for a reduction of search time for potential neighbor mobile nodes to use in a message packet route.

5. ) The method using said Media Access Control message framing protocol of claim 2 further comprising;

a scan message being used by said master mobile node to notify said slave mobile nodes that said master mobile node is not communicating for a number of frames or seconds.