At&t Mobility II LLC

At&t Wireless Services, Inc.

Cingular Wireless Ii, LLC

Ivy Corp.

Radioframe Networks, Inc.

Mary Jesse

Elliott Hoole

Hongliang Zhang

Siavash Alamouti

Michael Hirano

Gregory J Veintimilla

Eduardo F Casas

Patrick Poon

David G Michelson

David J Ryan

Robert G Mechaley, Jr

David Sheldon Stephenson

David B Gibbons

James Timothy Golden

Robert Lee Maxwell

David J Nix

Brian G Agee

Derek Gerlach

Matthew Bromberg

Robert Ray Naish

Minnie Ho

Steven Michael Knox

Greg Veintimilla

Jari Heinonen

Steven E McMeekin

Brian Schladetzky

Minnic Ho

Philip Andrew Cordier

Jeffrey Battin

James Don Ehrmin

Douglas Manis

Don A Messenger

Matthew William Wahlin

David James Ryan

Minni Ho

Robert G Mechaley

Embodiments of the present invention are directed to automated systems for organizing and facilitating information exchange between members of an organization. Automated systems that represent embodiments of the present invention allow for creation and administration of hierarchical groupings of members of the organization to facilitate efficient dissemination of information among members of groups. Embodiments of the present invention provide for automated and intelligent routing of information and communications among many different types of communications media and devices through which members of the organization can distribute and exchange information with one another. Embodiments of the present invention additionally provide for sophisticated logging, tracking, and monitoring of information distribution and management within the organization.

Automated communications system

The current application is related to communications and, in particular, to an announcement-and-bulletins system that allows for flexible and efficient distribution of announcements and bulletins through many different types of communications media and communications devices. The announcement-and-bulletins system can be managed and maintained from a variety of different types of devices and can distribute information to users through many different types of communications media and user devices.

Automated announcement-and-bulletins system

The high quality PCS communications are enabled in environments where adjacent PCS service bands operate with out-of-band harmonics that would otherwise interfere with the system's operation. The highly bandwidth-efficient communications method combines a form of time division duplex (TDD), frequency division duplex (FDD), time division multiple access (TDMA), orthogonal frequency division multiplexing (OFDM), spatial diversity, and polarization diversity in various unique combinations. The method provides excellent fade resistance. The method enables changing a user's available bandwidth on demand by assigning additional TDMA slots during the user's session.

Method for frequency division duplex communications

The current application is directed to a multi-channel interactive message response system that allows for interaction between users and the multi-channel interactive message response system through many different types of devices, communications protocols, and communications media. The multi-channel interactive message response system, in one implementation, is implemented within an automated communications system that organizes and facilitates information exchange between members of organizations and between organizations and individuals outside the organizations.

Multi-channel interactive message response system

A distributed radio system is disclosed. Transmit and receive packets of data are transported over a relatively high-speed multiplexed network, which in one embodiment may be an Ethernet network. The distributed radio system comprises in one embodiment a centrally-located network-level processing unit connected via network connections to one or more intermediate-level processing units. The intermediate-level processing units may be distributed throughout the coverage area. The processing units perform digital signal processing, as well as higher level processing such as signal routing, speech transcoding and proper interfacing to external environments, such as a macrocellular environment. Radio elements are provided that are accurately timed or synchronized, such that the radio elements have their own time base to ensure proper transmission, even when unpredictable network delays occur.

Radio system having distributed real-time processing

A discrete multitone stacked-carrier spread spectrum communication method is based on frequency domain spreading including multiplication of a baseband signal by a set of superimposed, or stacked, complex sinusoid carrier waves. In a preferred embodiment, the spreading involves energizing the bins of a large Fast Fourier transform (FFT). This provides a considerable savings in computational complexity for moderate output FFT sizes. Point-to-multipoint and multipoint-to-multipoint (nodeless) network topologies are possible. A code-nulling method is included for interference cancellation and enhanced signal separation by exploiting the spectral diversity of the various sources. The basic method may be extended to include multielement antenna array nulling methods for interference cancellation and enhanced signal separation using spatial separation. Such methods permit directive and retrodirective transmission systems that adapt or can be adapted to the radio environment. Such systems are compatible with bandwidth-on-demand and higher-order modulation formats and use advanced adaptation algorithms. In a specific embodiment the spectral and spatial components of the adaptive weights are calculated in a unified operation based on the mathematical analogy between the spectral and spatial descriptions of the airlink.

Highly bandwidth-efficient communications

A fixed wireless system (FWS) utilizing Orthogonal Frequency Division Multiplexing (OFDM) communication techniques is spectrally efficient and responsive to communications involving both voice and high speed data, such as Internet data. The FWS includes a wireless base unit; a plurality of fixed wireless remote units; a plurality of wireless data traffic channels available between the wireless base unit and the plurality of fixed wireless remote units; and a plurality of wireless voice traffic channels available between the wireless base unit and the plurality of fixed wireless remote units. Each wireless traffic channel is identifiable by a unique combination of frequency and time slots. Each wireless data traffic channel is used for carrying high speed data in addressed data packets to and from the plurality of fixed wireless remote units. On the other hand, each wireless voice traffic channel can be assigned and dedicated to a particular voice communication call involving one of the plurality of fixed wireless remote units for carrying voice data of the call.

Methods and apparatus for use in communicating voice and high speed data in a wireless communication system

A distributed radio system with multiple transceivers for simulcasting and selective processing of received signals is provided. The distributed radio system includes a plurality of processing elements and radio frequency transmitter elements interconnected by an Ethernet network. The system designates a number of radio frequency transmitter elements to be elements of a radio frequency simulcast set. The system utilizes relatively few frequency channels, and transmits at very low power levels, and thus causes minimal interference with an existing macrocellular environment. When signals transmitted from a mobile unit are detected by multiple radio receivers, the system is able to select a desired radio receiver signal for processing. When selecting a received signal for processing, the system utilizes a distributed processing technique that performs the selection process throughout several levels. The distributed processing utilized by the selection process may be synchronized. A selection time window may be utilized for making the selection process for the upstream-received data traffic. The system utilizes a centralized data link layer. Transmissions are implemented by a two-level multicast technique. The data transmission traffic is bundled. Selective management of the Ethernet switches is performed by the system.

Distributed radio system with multiple transceivers for simulcasting and selective processing of received signals

Priority messaging method for a discrete multitone spread spectrum communications system

Growing community of inventors

Issaquah, WA, United States of America

Mary Jesse