Texas Instruments Corporation

Cisco Technology, Inc.

Cisco Systems Inc.

William K Myers

James Scott Marin

Douglas B Weiner

Donald G Burt

J Leland Langston

Michael Brobston

Andrew Cilia

Kevin B Darbe

Michael F Black

Eugene A Robinson

Hatcher E Chalkley

Michael L Brobston

James L Langston

A local multipoint distribution service base station apparatus for sending and receiving communication signals to and from subscribers includes a base unit having at least one rack which is adapted to receive at least one subrack. At least one communication signal generating unit is also arranged and configured to be received by the subrack. In addition, a transmitting/receiving unit is operationally connected to the base unit for transmitting and/or receiving the communication signals to and from the subscribers.

Local multipoint distribution service base station apparatus

The invention provides methods and systems for power control in point-to-multipoint communications systems. Methods are described for both downstream and upstream control. Subscriber signals received at the base station,are level detected at receiver,and power adjust processing,and a control signal is sent to control output from the subscriber transmitter,. The invention maximizes the signal-to-noise ratio and signal-to-interference ratio for subscribers (CPE) while minimizing transmitted power. The invention is ideal for use in local multipoint distribution service (LMDS) systems.

Power control in point-to-multipoint systems

A point-to-multipoint communication system wherein the base station broadcasts the same frequency band signals over multiple sectors of given node. The base station includes a plurality of channel receivers (ch.,-ch. n) for each sector and a plurality of antennas,and,selectively coupled to said channel receivers. The subsector antennas have these radiation centers offset from each other to present different coverage over the node.

Point to multipoint communication system with subsectored upstream antennas

A wireless communication system (,) is disclosed in which a central office (,) generates a signal. A first base station (,) receives the central office signal and transmits a first broadcast signal in a first frequency range in response to the central office signal. A second base station (,) receives the first broadcast signal and transmits a second broadcast signal in a second frequency range in response to the first broadcast signal. A third base station (,) receives the second broadcast signal and transmits a third broadcast signal in the first frequency range in response to the second broadcast signal. In accordance with the present invention, a plurality of base stations are each able to provide one-way or two-way communication to a plurality of customers (,), with only one base station (,) receiving signals directly from the central office (,).

System and method for relaying signals to base stations in a wireless communications system

The invention provides methods and systems for power control in point-to-multipoint communications systems. Methods are described for downstream using an off-the-air monitor,and pick-up antenna,. The monitor detects the power level of the pick-up signal and a control signal sets the transmittal output from the base station in proportion to the detected composite power level.

Downstream power control in point-to-multipoint systems

An antenna compensation system and method equalizes transmission link efficiency in sectors having unequal antenna or path gain while maintaining an equalized power spectral density. Areas of a sector having lower gains receive broadcasts with more robust coding to equalize their transmission link performance with areas of a sector having higher gains. The robustness of coding is controlled through setting of different forward error code rates, setting of different modulation types, or a combination of both. In analog systems it is controlled through variation of a signal-to-noise sensitive transmission parameter. Sectors may be divided azimuthally with areas at or near the boresight receiving less robust coding and areas nearer the sector edges receiving more robust coding. Similarly, sectors may be divided into radial areas with the more distant areas receiving more robust coding.

Point-to-multipoint variable antenna compensation system

Multipoint Stations are controlled by one or more pilot tones broadcasted by a base station. The pilot tones are used to control the local oscillators of the remote stations both for receive and for transmit. The pilot tone is also used to control the input gain and the transmit gain of the remote station.

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McKinney, TX, United States of America

William K Myers