Lucent Technologies Inc.

At&t Bell Laboratories

High Point Sarl

Kenneth Yiu-Kwong Ho

Miguel Dajer

Kenneth W Parker

Douglas A Spencer

Richard Alan Windhausen

Kenneth Wayne Strom

John S Thompson

Kenneth Frank Smolik

Charles Y Farwell

Keith Elden Strege

Alan S Mulberg

Richard D Miller

Paul E Miller

Chang H Kim

Michel L Hearn

Michael A Smith

Kelvin K Ho

David M Kissel

Richard M Heidebrecht

Talmage P Bursh, Jr

Michael J English

Peter Keith LaConte

Brian D Bolliger

LaJeana N Roberts

Marc K Dennison

Winston Davidian

Alan Stuart Mulberg

Lajeana Nicole Robert

Douglas Albert Spencer

Michel Lee Hearn

John Stewart Thompson

Paul Eugene Miller

Richard Michael Heidebrecht

Kelvin Ki-Yui Ho

Richard Dale Miller

Marc Kevin Dennison

Brian David Bolliger

Charles Yeomans Farwell

David Michael Kissel

Michael Jerome English

Michael Adrian Smith

Disclosed is an interface and method for data transmission between digital and radio frequency (RF) components of a base station. The interface and method involves transmitting transmit or receive data over a first set of time slots and transmitting various uplink or downlink low rate static/control signals over a second set of time slots. The transmit data includes in-phase transmit data bits and quadrature phase transmit bits, and the receive data includes in-phase transmit data bits and quadrature phase transmit bits received over a diversity antenna system.

Serial communications link for a base stations

A method and circuit for performing a wired-or function in a differential transmission environment are disclosed. The wired-or function is realized by enabling the differential driver portion of the differential transceiver when the signaling path is to be driven with a logical true signal and disabling the differential driver portion when a logical false signal is to transmitted to the signaling path. In a preferred embodiment, a 1394 backplane node (a node is a single connection to the bus which may or may not be shared by multiple devices) is implemented using commercially available chips including a physical arbiter, a link controller, a differential transceiver, a programmable logic device, and some additional transistors.

Wired-or connection in differential transmission environment

Circuits embodying the invention include a baseband amplifier to whose input is applied a baseband input signal (I or Q). The gain of the amplifier is controlled by sampling the output of the amplifier and supplying the sampled signals to a dynamic histogram control (DHC) circuit which includes a memory circuit for storing a histogram which contains a statistically expected response of the sampled baseband signal. The DHC circuit includes circuitry for comparing the sampled signals to the stored histogram for producing a gain control signal which is then used to control the gain of the amplifier. In some embodiments, the DHC circuit may also include circuitry for producing an offset adjustment signal to control the direct current (dc) level of the signal being sampled and hence its symmetry.

Code division multiple access system with dynamic histogram control

Disclosed is an apparatus for encoding a plurality of data streams in a code division multiple access format to produce a composite signal. The apparatus comprises a plurality of channel units coupled in series, where each channel unit encodes at least one of the plurality of data streams. Each channel unit also combines the data encoded therein with a preceding encoded output signal provided by a preceding one of the channel units to thereby produce an associated encoded output signal. At least one channel unit is capable of providing the associated encoded output signal as a direct output signal to a first subsequent channel unit, and of providing a bypass output signal having cumulative encoded data to a further subsequent channel unit to effect a bypass of the first subsequent channel unit.

Automatic data bypass of a removed/failed CDMA channel unit

A wireless-access communications system, such as a CDMA cellular radio-telephone system (FIG. 2), comprises a packet-switched communications network (202, 207, 201) that interconnects cells (base stations; 202) with each other and with the public telephone network (100). Traffic of individual calls is packetized, and packet-bearing frames (300 in FIG. 7) of a plurality of calls are then statistically multiplexed and frame-relayed through the network to yield the high capacity, efficiency, and speed of traffic transport and handoff required for a CDMA cellular system. At each call processing unit (264 in FIG. 5), individual calls are handled by individual service circuits (602 and 612) which perform speech-processing functions such as coding and decoding, tone insertion, and echo cancellation, and packet-to-circuit-switched-PCM traffic conversion. Processors (602) adapt call processing unit timing to compensate for asynchrony between cells and call processing units and variations in call path transmission delays. Cell-to-cell communications, fixed call path addressing, and packetized control message transfers ensure that the same service circuit handles a call through even multiple soft handoffs (FIGS. 27-29) and efficiently communicates simultaneously with all cells involved in the handoff without involvement of system control entities and negative effect on system call-handling capacity. Both coded (packet-switched) and uncoded (circuit-switched) radio-telephone traffic are accommodated side-by-side. Wherever possible, existing and proven technology and component units are used to achieve low cost and high reliability.

Wireless access telephone-to-telephone network interface architecture

Growing community of inventors

Syosset, NY, United States of America

Kenneth Yiu-Kwong Ho