AT&T Intellectual Property I, LP

Robert Miller

Lusheng Ji

Harry R Worstell

Constance Jean Coty

Bo Han

John F Murray

Seungjoon Lee

Saeed S Ghassemzadeh

Leonid Razoumov

Spencer Neil White

Samrat Bhattacharjee

Timothy Cunningham

A method includes transmitting a first message during a first time interval of a frame from a device. Transmission of the first message is followed by a second time interval of the frame. The method further includes transmitting a second message during the second time interval. The second message is followed by a third time interval that is shorter than the second time interval. The third time interval includes a contention-free period, a contention period, or a combination thereof.

Devices, systems, and/or methods for managing wireless networks

A material medium, such as an optical fiber or electrical cable, is used to carry services. The material medium is monitored with at least one diagnostic sensor. The diagnostic sensor may measure the operational health of the material medium, or may measure local environmental conditions around the material medium.

Method and apparatus for monitoring a material medium

A method includes receiving a beacon message at a wireless network device. The beacon message is followed by a beacon time interval. The method further includes receiving a thin beacon message during the beacon time interval. The thin beacon message is followed by a thin beacon time interval that is shorter than the beacon time interval. The thin beacon time interval includes a contention-free period, a contention period, or a combination thereof.

In a wireless local area network, a first and second access point in which the RF coverage areas overlap are synchronized by positioning a monitor station within the overlap area. The monitor station receives beacon frames from both access points and records the arrival times. A manager in communication with both access points and the monitor station calculates a retardation interval and issues a control command to the second access point to retard transmission of its beacon frame. The retardation interval is calculated such that the contention-free period of the second access point does not overlap the contention-free period of the first access point. The manager may also issue control commands to the first and second access points to adjust their contention-free periods.

Synchronizing wireless local area network access points

An apparatus includes a battery pack, processor attached to the battery pack, and an antenna attached to the processor for establishing a radio link with an electronic device powered by the batter pack.

Apparatus and method for integrating a transmitting device and a battery pack

An apparatus includes a cantilevered element including a coating material having an affinity for at least one compound. The apparatus further includes a first capacitive plate and a second capacitive plate that are each spaced from and capacitively coupled to the cantilevered element. The first capacitive plate is configured to induce a vibration in the cantilevered element at a frequency related to a mass of the cantilevered element. A frequency detector is coupled to the second capacitive plate to detect a change in vibrational frequency of the cantilevered element as a result of at least one particle of the at least one compound coupling to the coating material.

Method and system for detecting an airborne trigger

An apparatus is provided that includes a processor mounted on a battery pack and a communication pathway from the processor to an electronic device comprising power battery contacts. The apparatus also includes an antenna mounted on the battery pack and coupled to the processor and adapted to transmit and receive data. A method is provided that includes installing an integrated chip including a processor and an antenna on a battery pack. The method also includes coupling the integrated chip and an electronic device when the battery pack is installed in the electronic device using power battery contacts. A high frequency signal superimposed on a direct current carried through the power battery contacts operates to send data between the processor and the electronic device.

Certain exemplary embodiments comprise a method that can comprise wirelessly transmitting a thin Beacon message from an Access Point in a wireless local area network cell. The thin Beacon message can be transmitted during a superframe subsequent to a Beacon message. The thin Beacon message can be transmitted at a predetermined thin Beacon time interval. The time period between consecutive Beacon and/or thin Beacon messages can be divided further into a thin CFP and a thin CP.

Disclosed are systems, methods and computer-readable media for providing a pass to access multimedia services in a limited geographical area serviced by a fiber-fed, star-topology network (FFSTN). The method comprises receiving pre-registration information from a user to authorize one or more computing devices to obtain access to the fiber-fed, star-topology network covering a limited geographical area for a limited time, presenting the user with a plurality of customizable services each associated with capabilities of the respective one or more computing devices to access the FFSTN, and upon authorization, granting access to requested customized services for each of the one or more computing devices. Mechanisms are provided for handing off one or more devices as they travel from a first FFSTN to a second FFSTN.

Method and apparatus for providing a pass to access multimedia services in a limited geographical area

A material medium, such as an optical fiber or electrical cable, is commonly used to carry services, such as telecommunications or energy service. The current invention identifies the following problems which may be encountered when monitoring a material medium. They are: (1) requiring a time and labor intensive investigation to find a fault, (2) needing a significant change in a current material medium infrastructure to support a monitoring effort, or (3) reducing available bandwidth in a material medium due to a monitoring device intruding into the material medium to send data. These problems are solved, in accordance with a feature of the current invention, by monitoring a material medium with at least one diagnostic sensor, and using an electromagnetic (EM) signal, such as radio frequency (RF), signal to wirelessly transmit the sensor data. The diagnostic sensor may measure the operational health of the material medium, or may measure local environmental conditions around the material medium. Using an EM signal, such as RF, to wirelessly transmit sensor data allows for a fast, low labor monitoring approach. Additionally, it avoids a need to either; (1) transfer the data by intruding into the monitored material medium, or (2) set up an independent material medium system to transfer the data.

In applications where data is transmitted in frames of symbols and the transmission medium is such that the probability of correct reception of symbols is, on the average, not uniform for different symbols in a frame, transmission of test frames enables creation of information about the different probabilities of correct reception, and that information is employed by the transmitter to control the manner in which symbols are transmitted so as to ameliorate the effects of the different probabilities of correct reception.

Method for encoding frame data

Systems and methods for extrapolating GPS coordinates beyond line of sight are disclosed. A coordinate extrapolation system (CES) can include a memory, a processor, and a GPS receiver. The CES can receive GPS signals and determine GPS coordinates corresponding to a location. If GPS signals are unavailable, the CES models the surface of the earth and extrapolates the GPS coordinates corresponding to the location at which GPS signals are unavailable. Methods for extrapolating the GPS coordinates and calibrating the CES are also disclosed.

Growing community of inventors

Convent Station, NJ, United States of America

Robert Miller