Patents by Inventor Subramanian Vasudevan

Subramanian Vasudevan 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: 9398630
    Abstract: At least one example embodiment discloses a method of controlling direct user equipment communications. The method includes receiving reports from a first user equipment (UE) and a second UE, respectively, the first and second UEs communicating with a serving base station, determining at least one control channel and at least one data channel for a direct communication between the first UE and the second UE, allocating at least one resource block for the direct communication link between the first UE and the second UE based on the determining and transmitting a configuration message to the first UE and the second UE, the configuration message indicating the allocated resource block and permitting at least one of the first UE and the second UE to determine parameters of the direct communication link.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: July 19, 2016
    Assignee: Alcatel Lucent
    Inventors: Jialin Zou, Subramanian Vasudevan
  • Publication number: 20160174107
    Abstract: A radio access network element includes a base station configured to: allocate, based on received radio link measurement information, at least a first portion of downlink packet data convergence protocol (PDCP) packets received at the base station for delivery to a user equipment over a wireless local area network (WLAN) link between a WLAN access point and the user equipment, the received radio link measurement information being indicative of at least one of a WLAN link quality and a loading of the WLAN link; and output the first portion of the received downlink PDCP packets to the WLAN access point for delivery to the user equipment over the WLAN link.
    Type: Application
    Filed: December 12, 2014
    Publication date: June 16, 2016
    Inventors: Satish KANUGOVI, Subramanian VASUDEVAN
  • Publication number: 20160173297
    Abstract: A local gateway and router device is configured to route uplink IP packets from a base station to a network element of a wireless local area network (WLAN) by configuring an IP route for the uplink IP packets based on a source IP address of the uplink IP packets. The source IP address is obtained from the WLAN; the uplink IP packets originate from a user equipment application having the source IP address; and the uplink IP packets have an indicator indicating that the uplink IP packets were received at the base station over a cellular link between the user equipment and the base station.
    Type: Application
    Filed: December 14, 2014
    Publication date: June 16, 2016
    Inventors: Satish KANUGOVI, Subramanian VASUDEVAN, Michael SCHARF
  • Patent number: 9357514
    Abstract: Example embodiments are directed to a method including transmitting, by a small cell, a pilot signal to a user equipment (UE) based on a first training signal received from the UE, and receiving, by the small cell, a second training signal from the UE. The second training signal is offset by a time based on the pilot signal transmitted by the small cell. The time offset represents a difference in time between the UE receiving a reference signal transmitted by a macro cell and the UE receiving the pilot signal transmitted by the small cell. The small cell adjusts a local reference timing based on the second training signal.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: May 31, 2016
    Assignee: Alcatel Lucent
    Inventors: Jialin Zou, Subramanian Vasudevan
  • Publication number: 20160112239
    Abstract: A gateway network element includes a memory and at least one processor. The memory is configured to store a program routine or module. The at least one processor is configured, by executing the program routine or module, to: map a first multi-path transport control protocol (MPTCP) flow to a first evolved packet system (EPS) bearer associated with a first serving base station for the user; map a second MPTCP flow to a second EPS bearer associated with a WiFi access point for the user, each of the first and second MPTCP flows corresponding to a same MPTCP connection for an application; output the first MPTCP flow on the first EPS bearer for delivery to the user through the first serving base station; and output the second MPTCP flow on the second EPS bearer for delivery to the user through the WiFi access point.
    Type: Application
    Filed: December 12, 2014
    Publication date: April 21, 2016
    Inventors: Satish KANUGOVI, Subramanian VASUDEVAN, Alistair URIE
  • Patent number: 9288680
    Abstract: A method of setting an almost blank subframe (ABS) duty cycle in a heterogeneous network including a macro cell and one or more small cells, the one or more small cells being underlaid with respect to the macro cell includes obtaining, at a network element, loading information corresponding to each of the macro cell and the one or more small cells, the loading information including, for each of the macro cell and the one or more small cells, an indication of an amount of information buffered at the cell for each user attached to the cell; and determining the ABS duty cycle based on the obtained loading information.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: March 15, 2016
    Assignee: Alcatel Lucent
    Inventors: Subramanian Vasudevan, Rahul N. Pupala, Kathiravetpillai Sivanesan
  • Publication number: 20150296415
    Abstract: An LTE cellular network and a WiFi network whose coverage areas overlap allow user devices accessing both networks to perform downlink channel aggregation through a tunneling feature provided by the cellular network whereby uplink information destined for the WiFi network is routed through an IP tunnel through the cellular network ultimately reaching the WiFi network via a common point or common network to which the WiFi and the cellular networks are connected. User devices having access to both networks are able to establish the tunnel during establishment of communications between such user devices and the WiFi network and use the tunnel as an uplink to convey information to the WiFi network, which is operated in a broadcast only mode or an ACK-less mode.
    Type: Application
    Filed: April 11, 2014
    Publication date: October 15, 2015
    Applicant: Alcatel Lucent
    Inventors: Jonathan Ling, Satish Kanugovi, Subramanian Vasudevan
  • Patent number: 9094157
    Abstract: A method of multi-streaming data includes obtaining first information based on transmission conditions between a first base station and a first set of users associated with the first base station. The method may include obtaining second information based on transmission conditions between a second base station and a second set of users associated with the second base station. The method may also include calculating metrics for the first set of users based on the first and second information. The first set users may include a subset of users that are associated with the first and second base station. The method may further include selecting a user from among the first set of users based on the calculated metrics.
    Type: Grant
    Filed: April 12, 2013
    Date of Patent: July 28, 2015
    Assignee: Alcatel Lucent
    Inventors: Rahul Pupala, Satish Kanugovi, Subramanian Vasudevan
  • Patent number: 9072027
    Abstract: A method of facilitating path switching, for a communication path between a first user equipment (UE) and a second UE, from a device to device (D2D) path to network path, includes receiving switch point information from the first UE that identifies a data block; establishing, at the access network, a connection with the first UE over an uplink path between the first UE and the access network; establishing, at the access network, a connection with the second UE over a downlink path between the network element and the second UE; setting, at the access network, a data block sequencing numbering to be the same for the uplink path and the downlink path based on the switch point information; and forwarding, at the access network, data from the first UE to the second UE via the network path, the network path including the uplink path and the downlink path.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: June 30, 2015
    Assignee: Alcatel Lucent
    Inventors: Subramanian Vasudevan, Jialin Zou, Sudeep Palat
  • Publication number: 20150163789
    Abstract: According to an implementation of the present subject matter, systems and methods for scheduling and controlling device-to-device (D2D) communication are described. The method includes receiving device parameters and uplink parameters from a first communication device and at least one second communication device, respectively. Further, based on the device parameters and the uplink parameters, transmission format of a D2D communication link for allowing D2D communication between the first communication device and the at least one second communication device is determined. Further, an uplink transmit grant and an uplink listen grant are transmitted to the first communication device and the at least one second communication device, respectively, based on the determination, wherein the uplink transmit grant and the uplink listen grant indicate at least the transmission format and time of transmission on the D2D communication link to the first communication device and the at least one second communication device.
    Type: Application
    Filed: May 22, 2013
    Publication date: June 11, 2015
    Inventors: Subramanian Vasudevan, Jialin Zou, Satish Kanugovi, Ganapathy Sundaram
  • Patent number: 9037157
    Abstract: A method of determining a mobility state of a user equipment (UE) in a wireless communications network, the method comprising: obtaining, at a first device, a first speed measurement, the first speed measurement being a measurement of a radial speed of the UE relative to a first network element; obtaining, at the first device, one or more second speed measurements corresponding, respectively, to one or more second network elements, each of the one or more second speed measurements being a measurement of a radial speed of the UE relative to the corresponding one of the one or more second network elements; generating, at the first device, a comparison result based on the first speed measurement and the one or more second speed measurements; and determining the mobility state of the UE based on the comparison result.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: May 19, 2015
    Assignee: Alcatel Lucent
    Inventors: Kathiravetpillai Sivanesan, Jialin Zou, Subramanian Vasudevan
  • Publication number: 20150082176
    Abstract: An illustrative example network simulator device includes a display and a processor that uses information simulating network performance including a plurality of network parameters. The processor selectively controls the display to present a visual representation of a network including a plurality of base stations and a plurality of mobile stations. The display also presents a visual representation of at least some of the generated information including information regarding at least one of the network parameters from a network perspective, a base station perspective, and a mobile station perspective.
    Type: Application
    Filed: September 16, 2013
    Publication date: March 19, 2015
    Applicant: Alcatel-Lucent USA Inc.
    Inventors: Mohammad R. Khawer, Subramanian Vasudevan, Rahul N. Pupala
  • Publication number: 20150079997
    Abstract: In a wireless telecommunications network, there is included: a macro cell (10) having a first coverage area; and at least one metro cell (20a, 20b, 20c) having a second coverage area, the metro cell being located within the first coverage area of the macro cell. Suitably, the macro cell is configured to: determine whether or not the macro cell is congested; determine whether or not the metro cell is uncongested; and, if it is determined the macro cell is congested and that the metro cell is uncongested, then the macro cell determines that an attempted application of Cell Association Bias (CAB) for the metro cell is warranted. Suitably, if CAB is in fact applied, the macro cell also implements enhanced Inter Cell Interference Coordination (eICIC) using Almost Blank Subframes (ABS) and informs its other neighboring metro cells of this configuration.
    Type: Application
    Filed: November 20, 2014
    Publication date: March 19, 2015
    Applicant: Alcatel-Lucent USA Inc.
    Inventors: Ruth Schaefer Gayde, Subramanian Vasudevan, Anil M. Rao
  • Patent number: 8977268
    Abstract: At least one example embodiment discloses a method of controlling a handover of a user equipment (UE) from a serving base station to a target base station in a heterogeneous network. The method includes determining, by a serving base station, a speed of the UE and a type of the handover, the type of the handover being one of macro cell to macro cell, macro cell to small cell, small cell to macro cell and small cell to small cell, and controlling, by the serving base station, the handover from the serving base station to the target base station based on the speed of the UE and the type of handover.
    Type: Grant
    Filed: July 12, 2012
    Date of Patent: March 10, 2015
    Assignee: Alcatel Lucent
    Inventors: Kathiravetpillai Sivanesan, Jialin Zou, Subramanian Vasudevan
  • Patent number: 8948107
    Abstract: In one embodiment, the method of allocating network resources by a base station of a network includes allocating at least two blocks of an uplink channel of the network to a direct communication link between a first user equipment (UE) and a second UE. The method further includes determining that a rate of data transfer on the direct communication link is greater than a rate of data transfer for uplink communications between one of (i) the first UE and base station and (ii) the second UE and the base station. The method further includes re-allocating, based on the determining, at least one of the at least two uplink blocks allocated to the direct communication link to at least one of uplink communications by the first UE, the second UE, or other UEs with the base station.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: February 3, 2015
    Assignee: Alcatel Lucent
    Inventors: Subramanian Vasudevan, Kathiravetpillai Sivanesan
  • Publication number: 20150023318
    Abstract: A mobile terminal is controlled via over-the-air feedback so as to enable its data transmissions to be independently and successfully decoded at each of the base stations in its active set absent a transmit power limitation or data retransmission limit. Using the decoded data, the channel is re-estimated and the waveform received from the mobile terminal is reconstructed and subtracted from the total interference at each base station in the active set where decoding has been successful. As a result, transmissions from other mobile terminals, which have yet to be successfully decoded at such a base station, will experience a higher signal-to-noise ratio and thus an increased likelihood of being successfully decoded.
    Type: Application
    Filed: July 22, 2013
    Publication date: January 22, 2015
    Applicant: Alcatel Lucent
    Inventors: Shirish Nagaraj, Subramanian Vasudevan
  • Patent number: 8929925
    Abstract: A technique for reducing interference in a GPS-equipped wireless device having a transmitter is provided. In doing so, a GPS signal is acquired, and it is determined whether the GPS signal contains valid GPS data, the GPS signal having a GPS frequency range. If the GPS data is not valid due to the noted second harmonic interference, the transmit power levels of the transmitter within different categories of frequency blocks (frequency blocks corresponding to the second harmonic of the transmit frequency of the device interfering with the GPS frequency range entirely, partially and only slightly) are selectively and iteratively determined. The power levels in these frequency blocks are iteratively and selectively reduced to help determine valid GPS data.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: January 6, 2015
    Assignee: Alcatel Lucent
    Inventors: Jim J. Chao, Subramanian Vasudevan
  • Patent number: 8914028
    Abstract: In a wireless telecommunications network, there is included: a macro cell (10) having a first coverage area; and at least one metro cell (20a, 20b, 20c) having a second coverage area, the metro cell being located within the first coverage area of the macro cell. Suitably, the macro cell is configured to: determine whether or not the macro cell is congested; determine whether or not the metro cell is uncongested; and, if it is determined the macro cell is congested and that the metro cell is uncongested, then the macro cell determines that an attempted application of Cell Association Bias (CAB) for the metro cell is warranted. Suitably, if CAB is in fact applied, the macro cell also implements enhanced Inter Cell Interference Coordination (eICIC) using Almost Blank Subframes (ABS) and informs its other neighboring metro cells of this configuration.
    Type: Grant
    Filed: August 15, 2011
    Date of Patent: December 16, 2014
    Assignee: Alcatel Lucent
    Inventors: Ruth Schaefer Gayde, Subramanian Vasudevan, Anil M. Rao
  • Publication number: 20140307637
    Abstract: A method of multi-streaming data includes obtaining first information based on transmission conditions between a first base station and a first set of users associated with the first base station. The method may include obtaining second information based on transmission conditions between a second base station and a second set of users associated with the second base station. The method may also include calculating metrics for the first set of users based on the first and second information. The first set users may include a subset of users that are associated with the first and second base station. The method may further include selecting a user from among the first set of users based on the calculated metrics.
    Type: Application
    Filed: April 12, 2013
    Publication date: October 16, 2014
    Applicants: Alcatel-Lucent USA Inc.
    Inventors: Rahul PUPALA, Satish KANUGOVI, Subramanian VASUDEVAN
  • Publication number: 20140274162
    Abstract: A technique for reducing interference in a GPS-equipped wireless device having a transmitter is provided. In doing so, a GPS signal is acquired, and it is determined whether the GPS signal contains valid GPS data, the GPS signal having a GPS frequency range. If the GPS data is not valid due to the noted second harmonic interference, the transmit power levels of the transmitter within different categories of frequency blocks (frequency blocks corresponding to the second harmonic of the transmit frequency of the device interfering with the GPS frequency range entirely, partially and only slightly) are selectively and iteratively determined. The power levels in these frequency blocks are iteratively and selectively reduced to help determine valid GPS data.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Applicant: Alcatel-Lucent USA Inc.
    Inventors: Jim J. Chao, Subramanian Vasudevan