Virtual Router for a Robust Wireless Multihop Highly Mobile Communication Network

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Flow diagram of an embodiment of operation of a mobile node after receiving a route request message
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Researchers
Kien Hua, Ph.D.
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Andrea Adkins
Assistant Director 407.823.0138
Patent Protection

Systems and methods for mobile communications

US Patent 8,971,231 B2
Publications
Connectionless Protocol A Localized Scheme to Ad Hoc Network.
Proc. of International Journal of Ad Hoc and Ubiquitous Computing (IJAHUC), Vol. 2, Issue 1/2, pp. 21 – 35, 2007.

The invention represents a method for forming and maintaining wireless communication routes between a source node and a destination node by means of relay nodes and mobile nodes. Performance of networks are unaffected by the mobility of such nodes.

Mobile wireless networks exist in two variations: those with infrastructure and those without (also known as mobile ad-hoc networks (MANETs)). The mobile ad-hoc network has no fixed physical routers (infrastructure); instead, the mobile nodes (cell phones, notebook computers, etc.) function as relay points or routers, which discover and maintain communication connections between the source nodes and the destination nodes. Thus, MANETs are a self-organizing multi-hop wireless network in which all nodes take part in the routing and data forwarding process. MANETs support mobile applications where an infrastructure is either not available (e.g. rescue operations) or not desirable (e.g. harsh environments).

Technical Details

Maintaining communication links between mobile nodes is difficult in multi-hop wireless networks. Movement of the mobile nodes can cause excessive delays and substantial overhead. Current MANET designs establish a new communication route each time a failure occurs. Current techniques, such as the rerouting approach (which repeatedly reestablishes new communication routes), are ineffective for video and audio communications since they suffer from serious data transmission delays. The Global Positioning System (GPS) approach does not work in environments where GPS is not available (e.g. indoors) and also requires extra hardware (e.g. receivers on every mobile node). UCF engineers have discovered a more robust method of mitigating these challenges by way of virtual routers. This virtual router is associated with a particular geographical area whose functionality is provided by the physical nodes (i.e., mobile devices) currently within the geographical region of the virtual router, thereby enabling a more efficient transmission of data.

Benefits

  • Robust data communication even within high mobility environments
  • Less expensive to operate and maintain

Applications

  • Vehicle-to-vehicle communications
  • Mobile wireless gaming
  • Municipal mesh networks
  • High-mobility sensor networks
  • Military
  • Communication network companies
  • Mobile device manufacturers
  • Software
  • Vehicle manufacturers