Motorola Corporation

Other

Freescale Semiconductor,inc.

Howard E Levin

Peter R Molnar

Terence L Johnson

Jeffrey P Gleason

Michael R May

Matthew A Pendleton

Nicole D Teitler

Mathew A Rybicki

Carlos A Greaves

James Joseph Kosmach

Sujit Sudhaman

Jody H Everett

Jaksa Djordjevic

Jeffrey Patrick Gleason

Kenneth J Cavanaugh

Jean-Louis Dolmeta

John M Porter

Robin Wiprud

A system, method, and apparatus are provided to facilitate social distancing. The system issues alarms based on the distance between a user and an object and one or more variable social distancing thresholds. The system enables trade-offs between risk and a desire to have in-person interaction for different activities by using one or more variable social distancing thresholds that may be based on social distancing guidelines and various characteristics.

Method and apparatus for social distancing alarm systems

A system and associated equipment are provided to facilitate social distancing. The system issues alarms when the distance between a user and an object is at or below a social distancing threshold. The system enables trade-offs between risk and a desire to have in-person interaction for different activities by using one or more variable social distancing thresholds that may be based on social distancing guidelines and user characteristics.

A communication system is dynamically configured to use some or all of the communication channel bandwidth. Regions of the communication channel are prioritized, and bandwidth is allocated in accordance with priorities and requested data rate.

Method and apparatus for data allocation in an overlap-enabled communication system

The present invention comprises a remote terminal ( ) and a central office ( ) as part of and ADSL system ( ). Once a communication channel is open between the remote terminal ( ) and the central office ( ), the remote terminal ( ) transmits channel specific information, application specific information, or both to the central office ( ). Once the central office ( ) receives the information, the central office ( ) can select data rate options optimized for the downstream receiver (the remote terminal ( )). Based on the application specific and/or channel specific information, the central office ( ) can use a combination of calculations and look-up tables to formulate new options. When the remote terminal ( ) sends channel specific information, the central office ( ) can perform calculations which determine performance margins at various data rates.

Method and apparatus for configuring a communication system

Coding gain is used to configure a communication system using a programmable error correction scheme. A best available error correction configuration is selected from among several configurations to provide an optimal coding gain performance for a given line or set of line characteristics and a given communication system. Payload is calculated for each of several error correction configurations, and the configuration providing the highest payload for a target bit error rate is selected. Use of gross gain to configure the communication system further provides an optimal configuration.

Method of identifying an improved configuration for a communication system using coding gain and an apparatus therefor

A method of monitoring carriers in a multi-carrier communication system ( ) enables unused carriers to periodically transmit data during real-time operation so that the carrier characteristics such as Signal-to-Noise Ratio values and equalizers may be updated regularly. Based on the updated information, bit swapping, dynamic rate adaption, and other features may be readily implemented.

Method for monitoring unused bins in a discrete multi-toned communication system

In the present invention, an ADSL system (,) identifies good bin as a bin capable of successfully transmitting data to a destination. A bad bin is identified as a carrier that is not capable of successfully transmitting data to the destination. A marginal bin is identified as a carrier that may be capable of transmitting data to the destination. The power to a bad bin is reduced and allocated to the marginal or good bin(s) to allow an increased bit rate. In another embodiment, the power to marginal bin is reduced and allocated to the good bin(s).

Method for allocating data and power in a discrete, multi-tone communication system

In the present invention, carriers associated with a discrete multi-tone (DMT) communications system (,) are sorted according to bit allocation capacity. The number of bits needed to attain a specified bit rate are then allocated beginning with the carrier having the greatest bit allocation capacity and proceeding toward the carrier having the least bit allocation capacity until all bits to are allocated. Once allocated, the power to any unused bins is reduced. Different subsets of the carriers between line cards can be specified in order to reduce crosstalk between adjacent lines.

Method for allocating data and power in a discrete multi-tone communication system

The present invention comprises a remote terminal (20) and a central office (30) as part of and ADSL system (10). Once a communication channel is open between the remote terminal (20) and the central office (30), the remote terminal (20) transmits channel specific information, application specific information, or both to the central office (30). Once the central office (30) receives the information, the central office (30) can select data rate options optimized for the downstream receiver (the remote terminal (20)). Based on the application specific and/or channel specific information, the central office (30) can use a combination of calculations and look-up tables to formulate new options. When the remote terminal (20) sends channel specific information, the central office (30) can perform calculations which determine performance margins at various data rates.

In the present invention, an ADSL system (10) determines if a bit swap is to occur based upon a projected margin of a best carrier and a current margin of a worst carrier. If a proposed swap is not beneficial (320, 512, 604, 612) no swap occurs. In addition, the present invention determines the effects of a bit swap on an error correction scheme (510, 611). If the swap effects the scheme, adjustments to system parameters are made to assure continued error correction. In addition, the present invention allows for bit swapping to and from bins containing zero or two bits respectively (331, 332, 403).

Method for reallocating data in a discrete multi-tone communication

A communications system 10 having an Asymmetric Digital Subscriber Line (ADSL) transceiver (24) is provided which may be configured either as a central office or a remote terminal in a system. The transceiver (24) operates in a listen/report idle state to report line activity to a host processor (22) prior to being configured as a central office or remote terminal. The host processor configures the transceiver (24) as a central office, remote terminal, or as otherwise specified based on the line activity.

Apparatus and method for auto-configuring a communication system

A transceiver (5) for an asymmetric communication system such as asymmetric digital subscriber line (ADSL) includes a configuration register (71) defining operation at either a central office (CO) or a remote terminal (RT). The configuration register (71) includes a control bit (72) for selecting either CO or RT mode. The transceiver (5) includes a signal processing module (70) configured according to the state of the control bit (72). For example, a digital interface (70) converts transmit data into transmit symbols and converts received symbols into receive data. The digital interface (70) uses a large memory (158) as a buffer in the transmit path and a small memory (160) as a buffer in the receive path in CO mode. In RT mode, the digital interface (70) uses the small memory (160) in the transmit path and the large memory (158) in the receive path. The selective configuration allows a single integrated circuit to be used in both CO and RT equipment.

Single-chip software configurable transceiver for asymmetric

A host processor (22) in a communication system (10) identifies a level of program visibility for reporting predetermined activation state changes, and signals a communications transceiver (24) to begin an initialization process. The communications transceiver (24) begins executing a series of states (51-55, 61-64) for initializing the communication system (10). A determination is made by the transceiver (24) whether a state change has occurred. A state change is identified and reported to a host processor (22) based on the program visibility select level.

Transceiver and method for reporting state transitions in a

A communications system (30) includes a transceiver (42) for transmitting data from a plurality of bins. Specifically, the BER of the bins is substantially equalized by allocating data by determining a projected margin. The projected margin is calculated for each bin by subtracting a reference signal-to-noise value from an estimated bin signal-to-noise value. The reference signal-to-noise value is predetermined by theoretical calculation or empirical data and stored in a look-up table. Bits are allocated to the bin having the maximum projected margin. This provides the best BER without changing the transmit power.

Growing community of inventors

Austin, TX, United States of America

Howard E Levin