Motorola Corporation

Harris Corporation

Eagle Technology, LLC

Keith Andrew Olds

Christopher N Kurby

Raymond Joseph Leopold

Gerald Joseph Davieau

Victor H Cutler, Jr

Joseph Bibb Cain

Gregory B Vatt

Brian Michael Daniel

Stanley Laytar Adams

James P Redden

John Richard Kane

Kristine P Maine

Michael J Andresen

Carl Myron Wagner

Peter J Armbruster

Kenneth M Peterson

Bary R Bertiger

Rodrigo Ibanez-Meier

David Terris

Ralph C Gregg, Jr

Ralph Charles Gregg

Patrick O'Connor Smith

Peter Alfred Swan

Richard L Ward

Daniel Richard Tayloe

James William Bishop, Jr

William Joe Haber

Kenneth Lee Sowles

Randy Lee Turcotte

Dennis Paul Diekelman

Ray O Waddoups

Vijay K Kapoor

David G Leeper

Thomas G Hallin

Curtis Lee Cornils

David T Gustafson

Norbert Kleiner

William N Shores

William George Schmidt

Stanley W Attwood

John Wesley Locke

Bradley B Bakke

Robert N Nelson

George Thomas Kroncke

Jim E Helm

Richard Lawrence Astrom

Joseph C Sligo

Douglas Roy Tomren

James T Shaneyfelt

Scott C White

Barbara M Desutter

Michael R James

Aswath Rao

Tadd E Spicer

A satellite communication system includes satellite nodes moving in respective known orbits, and a controller configured to determine routing neighborhoods for each satellite node based upon the known orbits, each routing neighborhood comprising a group of adjacent satellite nodes; and assign a respective primary neighborhood egress node (NEN) from among the plurality of satellite nodes for each routing neighborhood. A given satellite node of a given satellite node routing neighborhood may be configured to reroute a failed path from a source satellite node to a destination satellite node through the given satellite neighborhood using a secondary NEN instead of a respective primary NEN.

Satellite communication system having primary and secondary neighborhood egress nodes

The approach for managing the topology in a MANET includes, at the network layer of a wireless mobile node, operating a link state or other routing protocol to discover routes from the at least one wireless node to other wireless nodes within the MANET. The routing protocol includes the use of a global topology database storing global network topology information. The method also includes, at the network layer, providing the global network topology information from the global topology database of the routing protocol to the MAC sublayer. Also, at the data link layer, the MAC sublayer is controlled to perform neighbor connection management based upon the global network topology information from the global topology database. The approach may provide enhanced QoS, latency and resistance to link and node failures within MANETs.

Network layer topology management for mobile ad-hoc networks and associated methods

A MANET may include a plurality of MANET nodes each comprising a wireless transceiver and a controller cooperating therewith for establishing a wireless communication link with an adjacent MANET node based upon a time division multiple access (TDMA) implementation. The TDMA implementation may use a repeating scheduling of a plurality of temporally spaced-apart time slot units within a control epoch to thereby reduce a latency of communication.

Mobile ad-hoc network providing communication latency reduction features and related methods

A MANET may include a plurality of MANET nodes each including a wireless transceiver, a position determining device, and a controller cooperating with the wireless transceiver and position determining device for establishing a wireless communication link with an adjacent MANET node based upon a time division multiple access (TDMA) implementation. The TDMA implementation may use time slots without using a range dependent guard time therein. The controller may further determine a range to the adjacent MANET node, and schedule time slots to offset a link delay in a received signal from the adjacent MANET node based upon the determined range.

Mobile ad-hoc network providing desired link delay offset without guard times and related methods

Method and apparatus for scheduling time division multiple access (TDMA) communications among a plurality of peer nodes arranged to form a wireless ad hoc mobile network. The peer nodes communicate with each other using directional antennas and a TDMA process. The method includes a scheduling process for scheduling at least one transmit time slot during which a first one of the plurality of peer nodes transmits wireless data to a second one of the plurality of peer nodes.

Long range scheduling for directional antenna manet networks

Transcoding needs and selection are performed by a central call control function (). Each transcoder () registers with the appropriate call control (). The call control then determines whether a vocoder is required at all. If vocoding is required, call control () selects the appropriate transcoder () and inserts the appropriate transcoder into the bearer traffic stream ().

Vocoder selection method

A cellular communications system may include one or more cellular base stations and a plurality of mobile cellular communications devices for communicating therewith. More particularly, the cellular base station and the mobile cellular communications devices may each include an encoder for generating an information signal. Furthermore, a modulator may generate a modulated waveform based upon the information signal, a carrier signal having a frequency and phase associated therewith, and at least one carrier phase reference symbol. The modulator may also include an offset circuit so that the modulated waveform includes a carrier frequency indicator. A transmitter may also be included for transmitting the modulated waveform to the desired cellular base station or mobile cellular communications device.

Cellular communications system using baseband carrier injection and related methods

A transcoder () includes a method for assigning transcoder channel elements (). The transcoding assignment method selects a DSP () selects a DSP (channel element) of the required type which has available channel elements (). Further, the transcoding assignment method may dynamically reassign () DSPs from one channel element type to another.

Method for assigning transcoding channel elements

A method for location determination using Bluetooth techniques is applicable within buildings, underground or within other structures. A mobile unit ( ) seeks the location of a cell from location master ( ). Location master ( ) and a number of location subsidiaries ( ) determine ranging information with regard to the mobile unit ( ) using Bluetooth techniques. The location master ( ) then determines the mobile unit location using least squares estimation or other triangulation methods ( ). In an alternate embodiment, ranging information is fine tuned for noise and error measurements between the location master and the location subsidiaries ( ) are used.

Location determination for mobile units

A connectionless, wireless network ( ) includes any number of subscriber units ( ) and gateways ( ). The subscriber units ( ) and gateways ( ) are configured to engage in wireless communications with preferably more than one other node. The gateways ( ) provide portals through which communications may flow to and from the PSTN ( ). A repeating subscriber unit ( ) includes a router ( ) to aid in routing data conveyances to various communication links ( ). A routing table ( ) provides intelligence which is independent of other routing tables ( ) in other subscriber units ( ) and gateways ( ) and which indicates a variety of routes for data conveyances. Each repeating subscriber unit ( ) makes its own decisions about where to route data conveyances based upon the destinations of the data conveyances and feedback received from neighbors of the repeating subscriber unit ( ). Communication links ( ) previously selected for routing data conveyances may be altered when conditions warrant. More favorable routes are sought when previously selected routes encounter excessive congestion.

Wireless repeating subscriber units

Information packets are error encoded for transmission through a communication channel ( ) in a communication system ( ) using a variable payload outer code and a common physical layer inner code. The variable payload outer code is selected for each packet based upon an application or service associated with the packet. Thus, less coding can be used for packets associated with error tolerant applications and more coding can be used for packets associated with error sensitive applications. A common header outer code is also used for the packets. The variable payload outer code is preferably applied at the system adaptation level within an interworking function ( ) in the communication system ( ). The common header outer code and the common physical layer inner code are preferably applied at the data link layer.

Method for error correction in a communication system

The methods ( , and ), and apparatus ( and ) of the present invention employ demand assigned spatial multiplexing in a satellite communication system ( ) to efficiently accommodate varying demand for high data rate service while minimizing satellite antenna and radio system complexity in a ubiquitous coverage satellite system optimized for transporting packet data. In a preferred embodiment, the methods ( and ) and apparatus ( and ) of the present invention use a first set of signaling beams ( ) to establish signaling uplinks and then direct traffic spot beams ( ) at particular UE devices to support traffic uplinks in accordance with demand assigned multiple access (DAMA) parameters when and only when the UE devices have traffic data to transmit to a satellite. In a preferred embodiment, UE device ( ) also executes a method ( ) that includes steps for determining appropriate steering angles for a servicing satellite ( ) to use to direct a traffic spot beam ( ) to the UE device's location when the UE has traffic data to transmit.

Demand assigned spatial multiplexing in satellite communication systems

A communication satellite system ( ) is established using one or more satellite constellations ( ). The two or more satellite groups ( ) are connected via long range crosslinks ( ) which provide a communication path between the long range satellites ( ) in the two satellite groups ( ). Each satellite group ( ) comprises long range satellites ( ) and short range satellites ( ) which are interconnected using short range crosslinks ( ). A single antenna on each satellite provides both crosslinks. The long range crosslink ( ) is established using the antenna's main beam and the short range crosslinks ( ) are established using the antenna's sidelobes.

Method and apparatus for using the sidelobe of a long range antenna for a short range communication link

A satellite ground station ( ) mitigates potential interference from a fixed service installation ( ) by scanning a field of view and logging potentially interfering transmitters in a data structure ( ). The data structure includes fields for azimuth, elevation, and frequency channel, and when complete, forms a map of potentially interfering transmitters within the field of view of the ground station. When a satellite traverses the field of view such that the ground station may interfere with, or be interfered with by, a known potentially interfering transmitter as identified in the map, the ground station takes mitigation measures such as changing frequency channels or handing-off to a different satellite.

Method and apparatus for a mapping receiver

In a communication system having Low Earth Orbit (LEO) satellites (,), one or more Mission Operations Control Centers (MOCCs) (,), one or more Distributed Virtual Network Managers (DVNMs) (,), and several types of Customer Premises Equipment (CPE) (,, and,), individual service providers (,) are able to control the network services they provide independently from other service providers (,) through local management of the DVNMs (,).

Global telecommunications system with distributed virtual networks and method of operation therefor

Growing community of inventors

Mesa, AZ, United States of America

Keith Andrew Olds