Abstract: Disclosed is a method of sub-packet adaptation based on data rate. Specifically, the size of a sub-packet is adapted to a data rate at which the sub-packet is to be transmitted. In one embodiment, the sub-packet is size adapted to the data rate in a format that would allow such size adapted sub-packet to be soft combined with another sub-packet of a same or different size. The size adapted sub-packet may be transmitted prior to or after the other sub-packet.
Type:
Grant
Filed:
November 29, 2000
Date of Patent:
October 14, 2008
Assignee:
Lucent Technologies Inc.
Inventors:
Arnab Das, Farooq Ullah Khan, Sanjiv Nanda
Abstract: When an intelligent VoIP endpoint terminal on a VoIP network becomes inoperative for any reason and can't respond to a service request that it had been programmed for, rather than leaving that service request unfulfilled, a VoIP network-hosted instance of that primarily endpoint terminal-provided service is invoked to handle that request and provide the service that would have otherwise been provided by the endpoint terminal. The network-hosted instance thus executes the requested service on behalf of the unavailable endpoint terminal.
Type:
Grant
Filed:
September 29, 2004
Date of Patent:
October 14, 2008
Assignee:
Lucent Technologies Inc.
Inventors:
Andre Beck, Volker Hilt, Markus Andreas Hofmann
Abstract: A method and apparatus for estimating transmission delay across a telecommunications network by performing a statistical analysis of conversational, behavior in the network. Certain characteristic events associated with conversational behavior (such as, for example, alternative silence events, double-talk events, talk-spurt events and pause in isolation events) are identified and measured. Then, based on the proportion of time that these events occur, an estimate of the delay is calculated using a predetermined equation. Illustratively, the equation is a linear regression equation which has been determined experimentally.
Abstract: A method and multiple carrier linear amplifier circuit reduces intermodulation distortion by sampling the multiple carrier linear amplifier radio frequency signal and detecting the sampled signal at frequency increments and quantizing and nulling the intermodulation distortion. The signal can have predetermined frequency increments fo . . . fi situated in at least one of predetermined sub-bands. The sampled radio frequency signal can be mixed with the local oscillator signal to target the centers of the multiple carriers and generate an intermediate frequency signal.
Abstract: The invention includes a method for determining an expenditure associated with a network. A method includes obtaining network information associated with a portion of a network, categorizing each of a respective plurality of cells as one of an aggregated cell and a non-aggregated cell, determining an aggregating node configuration for at least one aggregating node associated with at least one base station associated with an aggregated cell, determining a deaggregating node configuration for at least one deaggregating node associated with at least one of the at least one aggregating node, and determining the expenditure according to at least one of the aggregating node configuration and the deaggregating node configuration. The categorization of cells is performed using the network information.
Type:
Grant
Filed:
September 30, 2005
Date of Patent:
October 14, 2008
Assignee:
Lucent Technologies Inc.
Inventors:
Mohamed Lotfy El-Sayed, Amit Mukhopadhyay, Zulfiquar Sayeed, Carlos Urrutia-Valdes
Abstract: An optical buffer employing Bragg scattering (BS), in which two pump signals are combined with an input (data) signal in a four-wave mixing (FWM) medium to frequency convert the input signal into an idler signal, which is applied to a dispersive medium, in which the idler signal propagates at a speed different from that of the input signal. By selectively turning on and off a pump, e.g., at bit-level switching rates, the BS-based frequency conversion can be selectively performed on particular bits in the input signal, e.g., to generate an output signal having reordered bits. A BS-based optical buffer can (1) be tuned to achieve different amounts of delay; (2) support single-channel or multiple-channel, classical or quantal communications; (3) be implemented with co-phased pump-phase modulation to suppress stimulated Brillouin scattering, while inhibiting spectral broadening of the idler signal; and (4) provide polarization independence using standard polarization-diversity techniques.
Abstract: A method of transmitting information over a feed back channel of a communication system that has multiple antenna systems is provided. Long term channel condition information is obtained from received measured and/or calculated channel parameter values. The obtained long term channel condition information is arranged in a particular manner and transmitted over a defined time period during which the long term channel condition information varies relatively slowly. Because the long term information remains relatively constant for one or more defined time periods, the amount of bandwidth needed to communicate this value is small because it need only be communicated occasionally. Thus only a small bandwidth needs to be allocated for transmitting this long term information.
Type:
Grant
Filed:
June 25, 2003
Date of Patent:
October 7, 2008
Assignee:
Lucent Technologies Inc.
Inventors:
Achilles G. Kogiantis, Aris L. Moustakas, Lawrence H. Ozarow, Steven H. Simon
Abstract: The present invention provides a method for allocating resources in a wireless communication system. The method may include selecting at least one resource control bit that is not to be transmitted. The at least one resource control bit is selected based on at least one priority associated with the at least one resource control bit.
Abstract: Bridged polysesquioxane compositions comprising: a bridged polysesquioxane host matrix comprising sesquioxane moieties and organic moieties, the sesquioxane moieties comprising a metallic element, the organic moieties interposed between sesquioxane moieties; and a guest molecule comprising a lanthanide atom; at least some of the organic moieties comprising a substituent selected from the group consisting of electron withdrawing functional groups and electron donating functional groups. Processes for making such bridged polysesquioxane compositions. Gain media and active materials for upconversion lasers comprising such bridged polysesquioxane compositions. Light can be amplified by fluorescence emissions from the bridged polysesquioxane compositions.
Abstract: An information and communication system uses an web page like environment or “Personal Space” to integrate a plurality of communication and monitoring functions. Home or enterprise automation components are linked together via wired or unwired network links and accessed via the Personal Space. Communications services are accessed through a wide variety of devices and facilitated by the Personal Space. Databases are built and used to customize user services. User profiles and system use patterns are compared and analyzed to continuously improve system performance.
Type:
Grant
Filed:
September 1, 2000
Date of Patent:
October 7, 2008
Assignee:
Lucent Technologies Inc.
Inventors:
Katherine G. August, Theodore Sizer, II, Michelle McNerney
Abstract: The present invention provides a method and an apparatus for controlling a Q-factor for a filter. The method comprises stabilizing an active feedback to provide a variable feedback in a filter, varying the active feedback based on an input signal to the filter, and producing a desired Q-factor for the filter at a first frequency band, in response to the variable feedback. The method further comprises reconfiguring a center frequency and a bandwidth of the filter based on a channel bandwidth of the input signal to the filter to adjust the Q-factor for the filter in response to a second frequency band different than the first frequency band. By reconfiguring a center frequency and a bandwidth of a filter, the Q-factor for the filter, such as a flexible or reconfigurable filter, may be controlled across a multiplicity of frequency band signals.
Type:
Grant
Filed:
December 23, 2004
Date of Patent:
October 7, 2008
Assignee:
Lucent Technologies Inc.
Inventors:
Georg Fischer, Gerhard Kaminski, Wolfgang Franz Eckl
Abstract: A fast and efficient method for network re-optimization is described. In one embodiment, the technique uses an algorithm that requires limited aggregate information to continually monitor the network for re-optimization opportunities. The re-optimization of the present invention enables a network to accommodate more traffic without adding capacity. The re-optimization of the present invention is performed only when network efficiency benefits above a predetermined threshold may be obtained. In addition, a least-cost set of sessions is determined to perform the re-routing of the present invention to attain the desired network efficiency.
Type:
Grant
Filed:
January 7, 2004
Date of Patent:
October 7, 2008
Assignee:
Lucent Technologies Inc.
Inventors:
Randeep S. Bhatia, Muralidharan Sampath Kodialam, Tirunell V. Lakshman
Abstract: Method for providing controlled access to an XML document includes defining at least one access control policy for a user of the XML document, deriving a security view of the XML document for the user based upon said access control policy and schema level processing of the XML document and translating a user query based on the security view of the XML document to an equivalent query based on the XML document. An apparatus for same includes means for defining an access control policy for a user of the XML document and means for deriving a security view of the XML document for the user based on said access control policy and schema level processing of the XML document. Also included are means for translating a user query based on the security view of the XML document to an equivalent query based on the XML document.
Type:
Grant
Filed:
December 27, 2004
Date of Patent:
October 7, 2008
Assignee:
Lucent Technologies Inc.
Inventors:
Chee-Yong Chan, Wenfei Fan, Minos N. Garofalakis
Abstract: A low-loss rectangular-passband multiplexer including a three-arm interferometer coherently connected to a waveguide grating router (WGR), resulting in a passband substantially of type N=3, without intrinsic loss. The three-arm interferometer has a free-spectral range (FSR) substantially equal to the channel spacing and is connected to an M-arm interferometer having a much larger FSR. The three-arm interferometer includes three waveguides each exhibiting a linearly increasing path length optically connected to a 1×3 coupler and a 3×3 coupler. The 1×3 coupler may be constructed from a series of Y-branch couplers.
Abstract: A polarization-diverse optical amplifier includes a polarization-sensitive optically active medium and a polarization splitter. The polarization splitter is configured to receive input light, to direct a first polarization component of the received input light to a first optical path segment, and to direct a second polarization component of the received input light to a separate second optical path segment. The active medium has first and second optical ports. The first optical port is at an end of the first optical path segment. The second port is at an end of the second optical path segment. The active medium outputs amplified light from one of the ports in response to receiving the input light at the other of the ports. In a preferred embodiment, the active medium has an internal optical axis, and the polarizations of the first and second components are oriented relative to that axis so that amplification is enhanced. The two optical path segments may include polarization-maintaining optical waveguides.
Type:
Grant
Filed:
April 26, 2006
Date of Patent:
October 7, 2008
Assignee:
Lucent Technologies Inc.
Inventors:
Aref Chowdhury, Christopher Richard Doerr, Gregory Raybon
Abstract: A method of controlling link transmission parameters of a communication flow in a network caches one or more network parameters at the end of a first communication flow for an elapsed time, and adjusts the network parameters for controlling link quality and transmit power of a next communication flow based on an uncertainty that is caused by caching for the elapsed time. The state of a communication channel during a previous communication flow (connection) is used to determine network parameters to use at a future communication flow. When a connection begins, and the network does not know the ideal settings to use, the network defines a specified, elapsed time duration over which the state of a previous connection no longer can be trusted, i.e., an uncertainty period. Network parameters are adjusted to account for uncertainty caused by the elapsed time.
Type:
Grant
Filed:
April 30, 2003
Date of Patent:
October 7, 2008
Assignee:
Lucent Technologies Inc.
Inventors:
Kenneth C. Budka, Arnab Das, Kamala Murti
Abstract: The present invention may provide a method of communication that includes selecting at least one access channel for transmission of data based on a channel condition. The present invention may also provide a method of communication that includes receiving data over at least one access channel selected for transmission based on a channel condition.
Type:
Grant
Filed:
June 29, 2005
Date of Patent:
October 7, 2008
Assignee:
Lucent Technologies Inc.
Inventors:
Qi Bi, Hoo-Yin Khoe, David Albert Rossetti, Sigen Ye, Qinqing Zhang
Abstract: The adjacency of access points in a wireless, local area network is used to determine the existence of common overlapping access point coverage areas and to determine maximum distances between access points.
Type:
Grant
Filed:
December 31, 2004
Date of Patent:
September 30, 2008
Assignee:
Lucent Technologies Inc.
Inventors:
Yigal Bejerano, S. Jamaloddin Golestani, Seung-Jae Han, Mark Anthony Shawn Smith