Georgia Tech Research Corporation

Saudi Arabian Oil Company

Truva Corporation

Future Wei Technologies, Inc.

Technology Innovation Institute - Sole Proprietorship LLC

The State University of New York

University of Cyprus

Technology Innovation Institute

Scientific Research Corporation

Ian F Akyildiz

Shih-Chun Lin

Howard Khan Schmidt

Abdallah Awadh Al-Shehri

Najwa Aaraj

Igor V Zhilin

Ahan Kak

Osama M Bushnaq

Giulia De Masi

Enrico Natalizio

Min Luo

Josep Miquel Jornet

Shuai Nie

Andreas Pitsillides

David M Gutierrez Estevez

Angeliki Tsioliaridou

Christos Liaskos

Elias Chavarria Reyes

George H Alessi

Charles G Ray

Mark Jensen

Sotirios Ioannides

Guy Smith

Abbdullah Awadh Al-Shehri

In a method for routing communications through a constellation () of a plurality of CubeSats orbiting a planet and responsive to a ground controller, the ground controller determines optimal tunnels () that include inter-satellite links () between CubeSats by: generating virtual nodes (); generating the sub-satellite points () to correspond to points on a path through each virtual node that CubeSats follow; calculating an inter-satellite link from a sub-satellite point another sub-satellite point during a period from a time of initialization when the first sub-satellite point is at an entry point of the first virtual node until the first sub-satellite point is at an exit point; and generating an information packet describing the optimal tunnel () including inter-satellite links () that interconnect the sub-satellite points (). The information packet transmitted from the ground controller to one of the CubeSats and is forwarded from one of the CubeSats to remaining CubeSats.

Low-overhead online routing scheme for ultra-dense software-defined CubeSat networks

A software-defined modem includes a multi-mode head and a baseband unit. The multi-mode head includes a plurality of mode frontends including, but not limited to acoustic, magnetic induction, radio frequency and optical. Each mode frontend of the plurality of mode frontends is configured to transmit and/or receive communications according to a preset communication mode. The baseband unit is configured to control operation of the multi-mode head. The multi-mode head is configured to simultaneously use one or more communication modes.

Universal multi-mode underwater software defined modem

Systems, methods, and computer-readable media for managing underwater acoustic communications. An automatic network slicing method specifically designed for handling underwater acoustic communications is implemented to enable admission control, routing, and dynamic resource allocation based on service level agreement requirements.

Systems, methods, and computer-readable media of automatic network slicing of underwater acoustic communication system resources

A space-based communications network () includes at least one central ground station () having a transceiver that is configured to communicate with satellites, such as cube satellites (). The cube satellites () form an ad hoc network of orbital cube satellites, in which each of the cube satellites () communicate with each other. One of the cube satellites communicates with the ground station (). A ground-based control system () communicates with the central ground station (). The control system () continuously determines a configuration of the ad hoc network () and communicates network control information for the cube satellites () to maintain communications in the ad hoc network (). The cube satellites () disseminate the network control to each other via the ad hoc network ().

Network employing cube satellites

A computational framework for designing a constellation that includes a plurality of cube satellites (CubeSats) includes an orbit propagation module, a coverage estimation module, a connectivity estimation module and an annealing module. The orbit propagation module receives a plurality of static parameters for the constellation and determines a position vector, a ground track and sub-satellite points for each of the plurality of CubeSats. The coverage estimation module receives the plurality of static parameters for the constellation and estimates Earth coverage for the constellation. The connectivity estimation module receives the plurality of static parameters for the constellation and determines active inter-satellite links (ISL) in the constellation. The annealing module receives input from the orbit propagation module, the coverage estimation module and the connectivity module and employs an annealing algorithm that generates a constellation design.

Large-scale constellation design framework for CubeSats

Example computer-implemented methods, computer-readable media, and computer systems are described for providing communication protocol architecture or framework for magnetic induction (MI)-based communications in wireless underground sensor networks (WUSNs), for example, in underground oil reservoirs. In some aspects, environment information of an underground region that affects the transmission qualities of MI communications is evaluated. A protocol stack is identified. The protocol stack includes a number of layers for MI communications among a number of sensors in a WUSN in the underground region. A cross-layer framework and the distributed protocol are built to jointly optimize communication functionalities of the plurality of layers based on the evaluation.

Environment-aware cross-layer communication protocol in underground oil reservoirs

A system for controlling an interaction of a surface with an impinging electromagnetic wave is provided. The system comprises a surface comprising a plurality of controllable elements, wherein each of the controllable elements is configured to adjust its electromagnetic behavior based on a control signal received by the controllable element, a sensing unit configured to detect a state of an environment of the surface and/or one or more wave attributes of an electromagnetic wave impinging on the surface, a control unit configured to determine, based on the detected state of the environment and/or the one or more wave attributes, a control state of the controllable elements, in which the electromagnetic behavior of the controllable elements is adjusted such that the surface interacts with the impinging electromagnetic wave in a predefined manner, and an adjusting unit configured to determine.

Wireless communication paradigm: realizing programmable wireless environments through software-controlled metasurfaces

Example computer-implemented methods, computer-readable media, and computer systems are described for accurate localization of wireless sensor devices in underground oil reservoirs. In some aspects, every sensor measures respective received magnetic field strengths (RMFSs) on a plurality of respective magnetic induction (MI) links and transmits the measured respective RMFSs to at least one anchor devices. A set of distances is determined from the measured respective RMFSs. The set of distances is processed through an ordered sequence of algorithms, namely weighted maximum likelihood estimation (WMLE), semi-definite programming (SDP) relaxation, alternating direction augmented Lagrangian method (ADM), and conjugate gradient algorithm (CGA), to generate accurate localization of the wireless sensor devices in underground oil reservoirs.

Magnetic induction based localization for wireless sensor networks in underground oil reservoirs

A network element (NE) comprising a receiver configured to receive packets from a plurality of flows, and a processor coupled to the receiver and configured to perform classification on the plurality of flows according to arrivals of the packets to classify the plurality of flows into a heavy-tailed (HT) class and a light-tailed (LT) class assign scheduling weights to the plurality of flows according to the classification, and select a scheduling policy to forward the packets of the plurality of flows according to the scheduling weights.

Maximize network capacity policy with heavy-tailed traffic

A method includes obtaining traffic statistics of accepted hybrid traffic at a controller of a software defined network that includes multiple local switches coupled by links, calculating an end to end delay associated with the accepted hybrid traffic, determining network stability thresholds from each local switch as a function of network congestion, determining an adjusted rate decision policy as a function of the end to end delay and the network stability thresholds, the adjusted rate decision policy for use by an edge switch to determine whether or not to accept offered traffic loads.

Software defined network traffic congestion control

Growing community of inventors

Alpharetta, GA, United States of America

Ian F Akyildiz