Patents by Inventor Prabaharan Kanesalingam

Prabaharan Kanesalingam 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: 9559856
    Abstract: A method and apparatus for preventing muting of ongoing services when a new multicast traffic channel, MTCH, is to be started or stopped are disclosed. In one embodiment, the method includes sending a multicast control channel, MCCH, update at a start of an MCCH modification period indicating that the new MTCH is to be started during a following MCCH modification period. The method further includes sending a calculated multicast control channel service start offset, MCCH-offset, indicating when the new MTCH is to be started after an MCCH boundary.
    Type: Grant
    Filed: May 1, 2015
    Date of Patent: January 31, 2017
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Prabaharan Kanesalingam, Kevin Smith
  • Publication number: 20160373267
    Abstract: A node (260) of a cellular network node sends data units to a group of base stations (200). Each data unit is configured for conveying multicast data to be sent by the base stations (200) in a synchronized manner at a starting time indicated in the data unit. For each of the data units, the node (260) determines the starting time as the sum of the time of sending the data unit from the node and an offset value. Further, the node (260) obtains feedback information from the base stations (200) of the group. The feedback information indicates a deviation of the starting time indicated in one of the data units (411) from an earliest possible time of sending the multicast data from the data unit (411) by the base stations (200) of the group. Depending on the feedback information, the node (260) adapts the offset value.
    Type: Application
    Filed: December 16, 2013
    Publication date: December 22, 2016
    Inventors: Ibtissam El Khayat, Prabaharan Kanesalingam, Jie Ling
  • Publication number: 20160261423
    Abstract: A method and apparatus for preventing muting of ongoing services when a new multicast traffic channel, MTCH, is to be started or stopped are disclosed. In one embodiment, the method includes sending a multicast control channel, MCCH, update at a start of an MCCH modification period indicating that the new MTCH is to be started during a following MCCH modification period. The method further includes sending a calculated multicast control channel service start offset, MCCH-offset, indicating when the new MTCH is to be started after an MCCH boundary.
    Type: Application
    Filed: May 1, 2015
    Publication date: September 8, 2016
    Inventors: Prabaharan KANESALINGAM, Kevin SMITH
  • Publication number: 20160261422
    Abstract: A method and system for preventing muting of ongoing services when a new multicast traffic channel, MTCH, is to be started or stopped are disclosed. According to one aspect, embodiments provide a method that includes sending an indication of service start to trigger sending of a multicast control channel, MCCH, update during a first MCCH modification period to inform the base station of the new MTCH to be started during a second MCCH modification period at a time determined at the base station. The method further includes sending control packet data units, PDUs, during an MCCH modification period preceding the second MCCH modification period, the PDUs arranged to avoid muting of the ongoing services.
    Type: Application
    Filed: May 1, 2015
    Publication date: September 8, 2016
    Inventors: Prabaharan KANESALINGAM, Kevin SMITH
  • Publication number: 20160254886
    Abstract: A method and system for determining whether to apply an inter-cell coordination procedure for a UE in the presence of inter-cell interference from cells, the cells including a serving cell and a plurality of interfering cells, are disclosed. According to one aspect, a method includes receiving measurements of uplink signal quality of the UE from the cells. The method also includes calculating a combined metric based on the received uplink signal quality measurements. The combined metric is compared to a serving cell threshold to determine whether to implement the inter-cell coordination procedure.
    Type: Application
    Filed: December 4, 2014
    Publication date: September 1, 2016
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Chandra Sekhar BONTU, Prabaharan KANESALINGAM, Mercy George
  • Publication number: 20160242174
    Abstract: Systems and methods for coexistence of Multimedia Broadcast Multicast Services (MBMS) and Voice over Internet Protocol (VoIP) services are disclosed. In one embodiment, a method of operation of a network node in a cellular communications network is provided. The method includes determining a number of MBMS subframes for an MBMS allocation period. The method also includes, for each MBMS subframe of the number of MBMS subframes, assigning a frame number and a subframe number for the MBMS subframe such that a probability of a VoIP packet transmission during the MBMS subframe is mitigated. By mitigating the probability that a VoIP packet transmission occurs during a scheduled MBMS subframe, a VoIP user equipment (UE) may miss fewer packets and/or experience reduced battery drain.
    Type: Application
    Filed: August 22, 2014
    Publication date: August 18, 2016
    Inventors: Chandra Sekhar Bontu, Prabaharan Kanesalingam
  • Publication number: 20160165471
    Abstract: A method and device for determining whether to send a measurement report to a serving cell and determining when an inter-cell coordination procedure is likely to achieve coordination gain are disclosed. According to one aspect, a method includes performing received signal quality measurements of the serving cell and a plurality of neighboring cells. The method also includes calculating a UE metric based on the received signal quality measurements of a plurality of interfering cells and based on a scaling parameter. The method further includes comparing the calculated UE metric to a threshold to determine whether to send the measurement report to the serving cell.
    Type: Application
    Filed: December 4, 2014
    Publication date: June 9, 2016
    Inventors: Chandra Sekhar BONTU, Prabaharan KANESALINGAM, Mercy George
  • Publication number: 20150381463
    Abstract: Systems and methods for coexistence of Multimedia Broadcast Multicast Services (MBMS) and Voice over Internet Protocol (VoIP) services are disclosed. In one embodiment, a method of operation of a network node in a cellular communications network is provided. The method includes determining a number of MBMS subframes for an MBMS allocation period. The method also includes, for each MBMS subframe of the number of MBMS subframes, assigning a frame number and a subframe number for the MBMS subframe such that a probability of a VoIP packet transmission during the MBMS subframe is mitigated. By mitigating the probability that a VoIP packet transmission occurs during a scheduled MBMS subframe, a VoIP user equipment (UE) may miss fewer packets and/or experience reduced battery drain.
    Type: Application
    Filed: September 18, 2014
    Publication date: December 31, 2015
    Inventors: Chandra Sekhar Bontu, Prabaharan Kanesalingam
  • Patent number: 9226266
    Abstract: In order to calculate a delay parameter for synchronized data transmission in a cellular communications network, a service center transmits a message to a base station including a transmission time. Upon receipt of the message, the base station determines a time of receipt of the message. A delay parameter is then determined by the base station as the difference between the time of receipt and the time of transmission. In one embodiment, the delay parameter is transmitted back to the service center by the base station.
    Type: Grant
    Filed: September 3, 2013
    Date of Patent: December 29, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventor: Prabaharan Kanesalingam
  • Publication number: 20150263847
    Abstract: Systems and methods are provided for managing faults at the tail end of the user plane associated with an MBMS bearer. A fault detection time interval associated with the MBMS bearer can be defined and monitored. A fault can be detected in response to determining that the defined time interval has elapsed without receipt of a synchronization packet. Mechanisms for detecting, indicating, localizing and repairing MBMS bearer faults are described.
    Type: Application
    Filed: March 11, 2015
    Publication date: September 17, 2015
    Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
    Inventors: Steve BAILLARGEON, Prabaharan KANESALINGAM
  • Publication number: 20150063188
    Abstract: In order to calculate a delay parameter for synchronized data transmission in a cellular communications network, a service center transmits a message to a base station including a transmission time. Upon receipt of the message, the base station determines a time of receipt of the message. A delay parameter is then determined by the base station as the difference between the time of receipt and the time of transmission. In one embodiment, the delay parameter is transmitted back to the service center by the base station.
    Type: Application
    Filed: September 3, 2013
    Publication date: March 5, 2015
    Applicant: Telefonaktiebolaget L M Ericsson (publ)
    Inventor: Prabaharan Kanesalingam
  • Patent number: 8554228
    Abstract: To perform a handover of a mobile station from a source base station to a target base station, the source base station determines a delay of a connection between the source base station and the target base station. The source base station computes an action time taking into account the determined delay, the action time specifying a time when the target base station is able to allocate resources to the mobile station for the handover.
    Type: Grant
    Filed: November 21, 2008
    Date of Patent: October 8, 2013
    Assignee: BlackBerry Limited
    Inventors: Chandra S. Bontu, Prabaharan Kanesalingam, William Edward Illidge, Devaki Chandramouli, Stephen P. Leung
  • Publication number: 20130208601
    Abstract: A method of operating a node of a communications network comprises the node requesting a user equipment unit to prepare a measurement report concerning a measurement object. The measurement report includes (a) a measurement result for the measurement object as measured from a current serving cell and a measurement result for the measurement object as measured from a neighbor cell; and (b) additional measurement reporting including measurements that are available at the user equipment unit from multiple serving carriers. The method further comprises the node configuring the user equipment unit to ensure that the user equipment unit includes a reference signal received power (RSRP) value for the measurement result for the measurement object as measured from the neighbor cell.
    Type: Application
    Filed: May 17, 2011
    Publication date: August 15, 2013
    Inventors: Tao Cui, Prabaharan Kanesalingam
  • Patent number: 8472406
    Abstract: A method and apparatus for handover data integrity of a mobile station in a wireless data network with a plurality of wireless network service areas. The method and apparatus includes initiating handover by a mobile station, identifying a target access service network (ASN) for handover from a serving ASN. When the target ASN is identified, receive a data integrity capability from the target ASN, and determine whether a direct data delivery mode is available as a data integrity mode. When a direct data delivery mode is available, direct data delivery is performed with the data associated with the service flow from the serving ASN to the target ASN.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: June 25, 2013
    Assignee: Apple Inc.
    Inventors: Chandra Sekhar Bontu, Prabaharan Kanesalingam, Devaki Chandramouli
  • Publication number: 20120026973
    Abstract: A method and apparatus for handover data integrity of a mobile station in a wireless data network with a plurality of wireless network service areas. The method and apparatus includes initiating handover by a mobile station, identifying a target access service network (ASN) for handover from a serving ASN. When the target ASN is identified, receive a data integrity capability from the target ASN, and determine whether a direct data delivery mode is available as a data integrity mode. When a direct data delivery mode is available, direct data delivery is performed with the data associated with the service flow from the serving ASN to the target ASN.
    Type: Application
    Filed: September 23, 2011
    Publication date: February 2, 2012
    Applicant: ROCKSTAR BIDCO LP
    Inventors: Chandra Sekhar Bontu, Prabaharan Kanesalingam, Devaki Chandramouli
  • Patent number: 8045525
    Abstract: Provided is a method and apparatus for handover data integrity of a mobile station in a wireless data network with a plurality of wireless network service areas. The method and apparatus includes initiation of a handover by a mobile station, identifying at least one target access network (ASN) for handover from a serving ASN that services wireless data communications with the mobile station. When at least one target ASN is identified, receiving a data integrity capability from the at least one target ASN. With the received data integrity capability, determining whether a direct data delivery mode is available as a data integrity mode based upon the received data integrity capability. When the direct data delivery mode is available as a data integrity mode, direct data delivery if performed with the data associated with the service flow from the serving ASN to the at least one target ASN.
    Type: Grant
    Filed: October 2, 2008
    Date of Patent: October 25, 2011
    Assignee: Nortel Networks, Limited
    Inventors: Chandra Sekhar Bontu, Prabaharan Kanesalingam, Devaki Chandramouli
  • Publication number: 20090131056
    Abstract: To perform a handover of a mobile station from a source base station to a target base station, the source base station determines a delay of a connection between the source base station and the target base station. The source base station computes an action time taking into account the determined delay, the action time specifying a time when the target base station is able to allocate resources to the mobile station for the handover.
    Type: Application
    Filed: November 21, 2008
    Publication date: May 21, 2009
    Applicant: Nortel Networks Limited
    Inventors: Chandra S. Bontu, Prabaharan Kanesalingam, William Edward Illidge, Devaki Chandramouli, Stephen P. Leung