Patents by Inventor Umashankar Thyagarajan
Umashankar Thyagarajan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 9838545Abstract: According to an embodiment, a DSL transceiver includes a power mode controller and a transmitter. The power mode controller is configured to set the DSL transceiver in a low power mode and move the DSL transceiver out of the low power mode responsive to the DSL transceiver receiving data. The transmitter is configured to transmit data only on a first group of sub-carriers when the power mode controller is moving the DSL transceiver out of the low power mode, the first group of sub-carriers being a subset of the sub-carriers available to the DSL transceiver for transmission.Type: GrantFiled: March 29, 2010Date of Patent: December 5, 2017Assignee: Lantiq Beteiligungs-GmbH & Co. KGInventors: Axel Clausen, Umashankar Thyagarajan, Thomas Zettler
-
Patent number: 9577701Abstract: A communication device includes a transmitter operable to couple to a plurality of transceivers via a plurality of transmission channels, transmit payload data via the plurality of transmission channels, and obtain monitored transmission conditions for one or more transmission channels in the plurality of transmission channels. During operation, the transmitter is further operable to generate reconfiguration request signals resultant from processing the monitored transmission conditions and transmit the reconfiguration request signals on transmission channels in the plurality of transmission channels.Type: GrantFiled: June 27, 2016Date of Patent: February 21, 2017Assignee: Lantiq Deutschland GmbHInventors: Gert Schedelbeck, Stefan Krause, Reinhard Stolle, Umashankar Thyagarajan
-
Publication number: 20160336992Abstract: A communication device includes a transmitter operable to couple to a plurality of transceivers via a plurality of transmission channels, transmit payload data via the plurality of transmission channels, and obtain monitored transmission conditions for one or more transmission channels in the plurality of transmission channels. During operation, the transmitter is further operable to generate reconfiguration request signals resultant from processing the monitored transmission conditions and transmit the reconfiguration request signals on transmission channels in the plurality of transmission channels.Type: ApplicationFiled: June 27, 2016Publication date: November 17, 2016Inventors: Gert SCHEDELBECK, Stefan KRAUSE, Reinhard STOLLE, Umashankar THYAGARAJAN
-
Patent number: 9014244Abstract: According to an embodiment, a DSL transceiver is set in a low power mode and moved out of the low power mode responsive to the DSL transceiver receiving data. Data is transmitted only on a first group of sub-carriers when moving the DSL transceiver out of the low power mode, the first group of sub-carriers being a subset of the sub-carriers available to the DSL transceiver for transmission.Type: GrantFiled: March 29, 2010Date of Patent: April 21, 2015Assignee: Lantiq Deutschland GmbHInventors: Axel Clausen, Umashankar Thyagarajan, Thomas Zettler
-
Patent number: 8788901Abstract: One embodiment relates to a method of communicating data between a transmitter and a receiver of a communication system. In this method, a payload data stream is received from a network interface layer. The payload data stream includes data units eligible for retransmission and data units non-eligible for retransmission. These data units are grouped into containers, where a container is associated with a container identifier that distinguishes the container from other containers. The containers are grouped into data transmission units, where a data transmission unit includes at least one container along with redundancy information that facilitates error detection for that data transmission unit. The data transmission units are transmitted to the receiver as a transmission data stream. Other methods and systems are also disclosed.Type: GrantFiled: October 2, 2008Date of Patent: July 22, 2014Assignee: Lantiq Deutschland GmbHInventors: Gert Schedelbeck, Dietmar Schoppmeier, Bernd Heise, Umashankar Thyagarajan
-
Patent number: 8630249Abstract: Allocation of different signal-to-noise margins to different carriers in a multi-carrier system is described. A preferred embodiment comprises assigning signal-to-noise ratio (SNR) margins to carriers in a multi-carrier system, comprises assigning a first SNR margin to a first data service based upon a first service characteristic, assigning a second SNR margin to a second data service based upon a second service characteristic, transmitting data associated with the first data service using the first signal-to-noise margin, and transmitting data associated with the second data service using the second signal-to-noise margin.Type: GrantFiled: April 16, 2012Date of Patent: January 14, 2014Assignee: Lantiq Deutschland GmbHInventors: Umashankar Thyagarajan, Frenzel Rudi, Bernd Heise, Axel Clausen
-
Patent number: 8468427Abstract: One embodiment relates to a method of transmitting data from a transmitter to a receiver. In the method, a payload data stream is provided which comprises a plurality of payload data units. A container stream is formed which comprises a plurality of containers having respective container identifiers, where a container includes an integer number of the payload data units and where the container identifiers collectively establish a predetermined order for consecutive containers. A codeword stream is formed which comprises a plurality of codewords having respective redundancy information, where a codeword includes at least a portion of the container and where redundancy information of the codeword facilitates detection of erroneous data in the codeword. The codeword is transmitted from the transmitter to the receiver. Other methods and systems are also disclosed.Type: GrantFiled: August 19, 2009Date of Patent: June 18, 2013Assignee: Lantiq Deutschland GmbHInventors: Gert Schedelbeck, Dietmar Schoppmeier, Bernd Heise, Umashankar Thyagarajan
-
Patent number: 8347062Abstract: A first communication device estimates upstream channel conditions for an upstream channel and determines an upstream memory requirement for a first buffer at a second communication device and a first buffer at the first communication device based on the upstream channel conditions. A downstream memory requirement is received from the second communication device for a second buffer at the first communication device and a second buffer at the second communication device based on downstream channel conditions estimated at the second communication device for a downstream channel. The first communication device determines whether the sum of the upstream and downstream memory requirements exceeds an available amount of memory for implementing the first and second buffers at the first communication device and revises at least one of the memory requirements if the sum of the upstream and downstream memory requirements is different than the available amount of memory.Type: GrantFiled: December 31, 2009Date of Patent: January 1, 2013Assignee: Lantiq Deutschland GmbHInventor: Umashankar Thyagarajan
-
Publication number: 20120201178Abstract: Allocation of different signal-to-noise margins to different carriers in a multi-carrier system is described. A preferred embodiment comprises assigning signal-to-noise ratio (SNR) margins to carriers in a multi-carrier system, comprises assigning a first SNR margin to a first data service based upon a first service characteristic, assigning a second SNR margin to a second data service based upon a second service characteristic, transmitting data associated with the first data service using the first signal-to-noise margin, and transmitting data associated with the second data service using the second signal-to-noise margin.Type: ApplicationFiled: April 16, 2012Publication date: August 9, 2012Inventors: Umashankar Thyagarajan, Frenzel Rudi, Bernd Heise, Axel Clausen
-
Patent number: 8223628Abstract: A method of transmitting data includes generating interleaved data. The method also includes converting the interleaved data into a modulated signal, and transmitting the modulated signal. The interleaved data is also stored, for example, in a buffer. The method further includes determining whether a retransmission of the modulated signal is required, and retransmitting the interleaved data based on a result of that determination.Type: GrantFiled: January 10, 2007Date of Patent: July 17, 2012Assignee: Lantiq Deutschland GmbHInventor: Umashankar Thyagarajan
-
Patent number: 8190848Abstract: According to one embodiment, memory is allocated between an interleaver buffer and a de-interleaver buffer in a communication device based on downstream and upstream memory requirements. The upstream de-interleaver memory requirement is determined based on upstream channel conditions obtained for a communication channel used by the communication device. The memory is allocated between the interleaver and de-interleaver buffers based on the downstream and upstream memory requirements. The downstream interleaver memory requirement may be determined based on one or more predetermined downstream configuration parameters. Alternatively, the downstream interleaver memory requirement may also be determined based on the upstream channel conditions by estimating the downstream capacity of the communication channel based on the upstream channel conditions and determining an interleaver buffer size that satisfies one or more predetermined downstream configuration parameters and the downstream capacity estimate.Type: GrantFiled: July 28, 2008Date of Patent: May 29, 2012Assignee: Lantiq Deutschland GmbHInventor: Umashankar Thyagarajan
-
Patent number: 8179915Abstract: A method of transmitting data includes storing a first set of transmission data and a first set of retransmission data. A first ratio of transmission data to retransmission data is determined. A plurality of transmission data units is generated with each data unit including a portion of transmission data from the first set of transmission data and a portion of retransmission data from the first set of retransmission data in accordance with the first ratio. The plurality of transmission data units is transmitted.Type: GrantFiled: June 28, 2007Date of Patent: May 15, 2012Assignee: Lantiq Deutschland GmbHInventors: Michael Horvat, Umashankar Thyagarajan
-
Patent number: 8169963Abstract: Allocation of different signal-to-noise margins to different carriers in a multi-carrier system is described. A preferred embodiment comprises assigning signal-to-noise ratio (SNR) margins to carriers in a multi-carrier system, comprises assigning a first SNR margin to a first data service based upon a first service characteristic, assigning a second SNR margin to a second data service based upon a second service characteristic, transmitting data associated with the first data service using the first signal-to-noise margin, and transmitting data associated with the second data service using the second signal-to-noise margin.Type: GrantFiled: August 20, 2010Date of Patent: May 1, 2012Assignee: Lantiq Deutschland GmbHInventors: Umashankar Thyagarajan, Rudi Frenzel, Bernd Heise, Axel Clausen
-
Publication number: 20100309965Abstract: Allocation of different signal-to-noise margins to different carriers in a multi-carrier system is described. A preferred embodiment comprises assigning signal-to-noise ratio (SNR) margins to carriers in a multi-carrier system, comprises assigning a first SNR margin to a first data service based upon a first service characteristic, assigning a second SNR margin to a second data service based upon a second service characteristic, transmitting data associated with the first data service using the first signal-to-noise margin, and transmitting data associated with the second data service using the second signal-to-noise margin.Type: ApplicationFiled: August 20, 2010Publication date: December 9, 2010Applicant: LANTIQ DEUTSCHLAND GMBHInventors: Umashankar Thyagarajan, Frenzel Rudi, Bernd Heise, Axel Clausen
-
Publication number: 20100254444Abstract: According to an embodiment, a DSL transceiver is set in a low power mode and moved out of the low power mode responsive to the DSL transceiver receiving data. Data is transmitted only on a first group of sub-carriers when moving the DSL transceiver out of the low power mode, the first group of sub-carriers being a subset of the sub-carriers available to the DSL transceiver for transmission.Type: ApplicationFiled: March 29, 2010Publication date: October 7, 2010Inventors: Axel Clausen, Umashankar Thyagarajan, Thomas Zettler
-
Publication number: 20100254380Abstract: According to an embodiment, a DSL transceiver includes a power mode controller and a transmitter. The power mode controller is configured to set the DSL transceiver in a low power mode and move the DSL transceiver out of the low power mode responsive to the DSL transceiver receiving data. The transmitter is configured to transmit data only on a first group of sub-carriers when the power mode controller is moving the DSL transceiver out of the low power mode, the first group of sub-carriers being a subset of the sub-carriers available to the DSL transceiver for transmission.Type: ApplicationFiled: March 29, 2010Publication date: October 7, 2010Inventors: Axel Clausen, Umashankar Thyagarajan, Thomas Zettler
-
Patent number: 7801076Abstract: Allocation of different signal-to-noise margins to different carriers in a multi-carrier system is described. A preferred embodiment comprises assigning signal-to-noise ratio (SNR) margins to carriers in a multi-carrier system, comprises assigning a first SNR margin to a first data service based upon a first service characteristic, assigning a second SNR margin to a second data service based upon a second service characteristic, transmitting data associated with the first data service using the first signal-to-noise margin, and transmitting data associated with the second data service using the second signal-to-noise margin.Type: GrantFiled: May 15, 2007Date of Patent: September 21, 2010Assignee: Infineon Technologies AGInventors: Umashankar Thyagarajan, Frenzel Rudi, Bernd Heise, Axel Clausen
-
Patent number: 7769052Abstract: One embodiment of the present invention relates to a network device. The network device includes a receiver configured to be coupled to a transmission medium supporting a multi-carrier channel over which data is communicated as symbols in a first communication state according to an initial bit-loading configuration. The receiver is further configured to detect noise that can corrupt the symbols on the multi-carrier channel. In addition, the receiver is configured to, in response to the detected noise, allocate at least part of the multi-carrier channel to a transient robust channel that facilitates adaptive communication. Other methods and devices are also disclosed.Type: GrantFiled: May 24, 2007Date of Patent: August 3, 2010Assignee: Lantiq Deutschland GmbHInventors: Umashankar Thyagarajan, Vladimir Oksman, Bernd Heise, Stefan Uhlemann
-
Publication number: 20100106922Abstract: A first communication device estimates upstream channel conditions for an upstream channel and determines an upstream memory requirement for a first buffer at a second communication device and a first buffer at the first communication device based on the upstream channel conditions. A downstream memory requirement is received from the second communication device for a second buffer at the first communication device and a second buffer at the second communication device based on downstream channel conditions estimated at the second communication device for a downstream channel. The first communication device determines whether the sum of the upstream and downstream memory requirements exceeds an available amount of memory for implementing the first and second buffers at the first communication device and revises at least one of the memory requirements if the sum of the upstream and downstream memory requirements is different than the available amount of memory.Type: ApplicationFiled: December 31, 2009Publication date: April 29, 2010Applicant: LANTIQ DEUTSCHLAND GMBHInventor: Umashankar Thyagarajan
-
Publication number: 20100023711Abstract: According to one embodiment, memory is allocated between an interleaver buffer and a de-interleaver buffer in a communication device based on downstream and upstream memory requirements. The upstream de-interleaver memory requirement is determined based on upstream channel conditions obtained for a communication channel used by the communication device. The memory is allocated between the interleaver and de-interleaver buffers based on the downstream and upstream memory requirements. The downstream interleaver memory requirement may be determined based on one or more predetermined downstream configuration parameters. Alternatively, the downstream interleaver memory requirement may also be determined based on the upstream channel conditions by estimating the downstream capacity of the communication channel based on the upstream channel conditions and determining an interleaver buffer size that satisfies one or more predetermined downstream configuration parameters and the downstream capacity estimate.Type: ApplicationFiled: July 28, 2008Publication date: January 28, 2010Applicant: INFINEON TECHNOLOGIES AGInventor: Umashankar Thyagarajan