Lucent Technologies Inc.

Alcatel-lucent USA Inc.

Alcatel Lucent

Lucent Technoligies Inc.

Miguel Dajer

Harvey Rubin

Rajan Bhandari

Peter Keith LaConte

Mahendra Tailor

Edward Ellis Eibling

Keith Elden Strege

Kenneth Yiu-Kwong Ho

Mark Y McKinnon

Sigen Ye

Yang Yang

Frances Lin Jiang

Gregg Scott Nardozza

Mark H Kraml

James E Dail

Claire T Kerr

Roy S Coutinho

Kyoung Il Kim

Chang H Kim

Hayder Sadiq Radha

Michael Francis Garyantes

Hamid Reza Rabiee

Ql Bl

Peter K LaConte

Mahendra Tallor

Claire Talkin Kerr

A method and apparatus for guaranteeing packet delivery times in an asynchronous network includes generating a global timing schedule to synchronize the communication between the terminals of a network and, in response to at least one trigger, transmitting and receiving data according to the generated global timing schedule. To optimize bandwidth utilization, more than one terminal may transmit data during a specific time slot of each time frame of the global timing schedule as long as no more than one terminal attempts to transmit data to a common other terminal.

Method, apparatus and system for guaranteed packet delivery times in asynchronous networks

A method, apparatus and system for the synchronized combining of packet data in a network includes sorting data packets received during a predetermined time period into groups according to for which communications device of the network the received data packets are intended. The data packets in each of the groups intended for the respective communications devices are respectively time aligned and orthogonally combined. The respectively combined data packets intended for each of the specific communications devices are subsequently transmitted to the intended device using a single header and in a substantially compressed format.

Method, apparatus and system for the synchronized combining of packet data

The present invention provides a method of dynamically forming a neighbor list in a wireless communication system. Embodiments of the method may include forming a neighbor list associated with at least one sector based on information provided by at least one mobile unit.

Method of dynamically populating a neighbor list in a wireless communication system

A method and system for network terminal clock synchronization includes determining a respective round trip delay time from a master terminal to each slave terminal and offsetting the clock of each slave terminal by an amount proportional to the respective determined round trip delay time such that the master terminal and each of the slave terminals have substantially the same point of reference in time. The method and system further include, in response to a trigger signal, determining a respective offset between the master clock of the master terminal and the clocks of each of the slave terminals and offsetting the clocks of each of the slave terminals by an amount proportional to the determined respective offset to synchronize the clocks of each of the slave terminals to the master clock of the master terminal.

Method and system for the clock synchronization of network terminals

A wireless communication system base station includes a number of channel unit boards, each including multiple channel elements for providing processing operations for signals assigned to multiple carriers of the system. A given channel unit board includes a multiplexer which is operative to implement multi-carrier/multi-sector channel pooling by assigning a given one of the channel elements of that board to any one of the multiple carriers of the system. For example, the multiplexer in the given channel board may be operative to connect the channel elements of that board to I/Q signal buses associated with different system carriers. The I/Q signal bus for each of the carriers is then combined on the given board with corresponding signals from other boards. The invention allows each of N channel elements of the given channel unit board to be assigned to a particular one of up to N carriers of the system, thereby providing substantially improved flexibility in terms of system configuration.

Multi-carrier/multi-sector channel pooling in a wireless communication system base station

A DPRAM is placed in the RF path before the digital to analog converter, to provide dynamic path gain compensation to the digital signal prior to conversion to an analog signal. The DPRAM stores corrections to the signal to compensate for amplitude losses in the signal arising from heat and non-linearities. The DPRAM has two sets of identical addresses. A logic switch, alternately directs an input signal to one of the two sets of addresses. Pre-calculated signal values which compensate for path gain are stored in one of the two sets of addresses in the DPRAM. The signal input to the DPRAM is directed to the other block. The value of the signal input to the DPRAM will determine the address to which the new value can be found. It is this new value which is actually input to the DAC and from which an analog signal is created. The updated values written to the DPRAM are the signal values with path gain compensation that is independently calculated and applied to the RF signal by a Dynamic Path Gain Compensation Controller ('DPGCC'). The DPGCC may apply any known algorithms to compute the path gain compensation and adjust the signal accordingly. In one advantageous embodiment the DPGCC accounts for thermal losses and non-linearity and takes into consideration overdrive protection constraints.

Dynamic path gain compensation for radios in wireless communication systems

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 wideband code division multiple access (CDMA) communication system overlayed on an IS-95 network generates two or more digital bit streams from a group of wideband digital data streams, each digital bit stream spread to form a CDMA component signal. Each CDMA component signal is combined with a corresponding IS-95 digital bit stream to form a composite CDMA signal, allowing a base station to share transmitter subsystems between the wideband and IS-95 systems. For up to three carrier frequencies, up to three composite CDMA signals are employed. A digital bit stream for a group of summed user conversations in the IS-95 system modulates a respective RF carrier frequency to generate a low-power RF signal. The CDMA component signals of the wideband CDMA system are generated so each has a chip rate identical to the chip rate of the digital bit streams of the IS-95 system. The baseband digital data streams for all wideband user conversations are summed digitally for each targeted RF carrier frequency to produce the composite wideband digital signal for each targeted frequency. In one application, each composite wideband digital signal, each at the IS-95 chip rate, is then used to modulate a carrier frequency which is either the same, or has approximately the same frequency and phase as the carrier frequency used in the IS-95 system. Three low-power RF signals are produced in the wideband system, each having the same spectral characteristics as the corresponding low-power RF signals generated in the IS-95 system. These low-power RF signals at the same frequency are combined into a single signal provided to the amplifier and antenna subsystem of a base station transmitter. In another application, each composite digital signal is digitally combined with a respective IS-95 digital bit stream prior to modulation by respective RF carrier. Therefore, signal combining between the IS-95 and wideband CDMA portions of a base station system is accomplished either digitally or with RF signals prior to amplification, thereby allowing the IS-95 system and wideband CDMA system portions of the base station to share RF filters, amplifiers and antennas of the base station transmitters.

CDMA transmitter and method generating combined high-rate and low-rate CDMA signals

A reconfigurable base station suitable for supporting multiple wireless communication system standards includes a set of channel unit boards, each providing processing operations for user signals assigned to multiple carriers of the system, a set of a radio boards, each generating a radio frequency (RF) output signal for each of at least a subset of the multiple carriers, and a reconfigurable bus interconnecting the channel unit boards and radio boards. The base stations configured to support a particular wireless system standard, such as IS-95 CDMA, by assigning particular user signals to designated signal lines of the reconfigurable bus. The base station may then be reconfigured to support other CDMA standards, such as, e.g., IS-95C with or without Orthogonal to Transmit Diversity (QTD), Multi-Carrier (MC) cdma2009, or Universal Mobile Telecommunications System, (UMTS) by assigning. other user signals to the signal lines of the reconfigurable bus. The assignment of signal lines may be implemented dynamically under the control of software running on a base station control computer, or by establishing fixed connections between the bus signal lines and appropriate ports of the channel unit and radio boards.

Reconfigurable wireless system base station

A single base station supports the non-diversity transmission of a first digital signal type and the diversity transmission of a second digital signal type. The base station includes primary channel boards for modulating and encoding a first digital signal type and secondary channel boards for modulating and encoding a second digital signal type. A first group of transmit radio modules accept the first digital signal type and the second digital signal type and provides a composite electromagnetic output signal. Each transmit radio module is associated with a different sector. A second group of transmit radio modules accept the second digital signal type from secondary channel boards and provide a diverse electromagnetic output signal for complementing the composite electromagnetic output signal.

Code-division, multiple-access base station having transmit diversity

The present invention is an apparatus and a method for sharing a communication channel among two or more base stations connected to a base station controller via a common transmission line in a channelized format. The present invention allows each of the base stations to receive data transmitted over a shared communication channel from the base station controller, to determine whether the data transmitted from the base station controller is intended for that base station, and to insert its data into the communication channel without interfering with data transmitted by other base stations over the communication channel. In one embodiment, each of the base stations is configured to bridge onto the transmission facility such that signaling messages being transmitted over a signaling channel may be received by all of the base stations. The signaling messages has associated identifiers for specifying particular base stations to which the signaling messages are intended. In another embodiment, each of the base stations can insert its signaling message into the data stream over the signaling channel without interfering with signaling messages already in the data stream.

Apparatus and method for sharing a signaling channel

A DPRAM is placed in the RF path before the digital to analog converter, to provide dynamic path gain compensation to the digital signal prior to conversion to an analog signal. The DPRAM stores corrections to the signal to compensate for amplitude losses in the signal arising from heat and non-linearities. The DPRAM has two sets of identical addresses. A logic switch, alternately directs an input signal to one of the two sets of addresses. Pre-calculated signal values which compensate for path gain are stored in one of the two sets of addresses in the DPRAM. The signal input to the DPRAM is directed to the other block. The value of the signal input to the DPRAM will determine the address to which the new value can be found. It is this new value which is actually input to the DAC and from which an analog signal is created. The updated values written to the DPRAM are the signal values with path gain compensation that is independently calculated and applied to the RF signal by a Dynamic Path Gain Compensation Controller (&ldquo;DPGCC&rdquo;). The DPGCC may apply any known algorithms to compute the path gain compensation and adjust the signal accordingly. In one advantageous embodiment the DPGCC accounts for thermal losses and non-linearity and takes into consideration overdrive protection constraints.

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

A processor monitors the real time forward link power utilization in a base station, and a controller regulates the real time forward link power utilization in the base station. The processor and controller operate in a feedback configuration to maintain call quality and prevent damage to the base station. The processor determines real time forward link power utilization on a per frame basis by taking samples at a per chip rate within each frame. The forward link power is then obtained by taking the mean of the samples.

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Succasunna, NJ, United States of America

Miguel Dajer