Patents by Inventor Kalyan Basu

Kalyan Basu 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: 7904086
    Abstract: A method and computer program are provided for handing off a mobile device in communication with a first wireless system having a first network address to one or more other wireless systems within communication range of the mobile device. The method and computer program include periodically monitoring by the mobile device of communications from the first wireless system and the other wireless systems, calculating a signal strength associated with each of the monitored communications, selecting one of the other wireless systems, and transferring communication to the selected wireless system upon detection of a predetermined threshold of the signal strength associated with the first wireless system.
    Type: Grant
    Filed: October 2, 2006
    Date of Patent: March 8, 2011
    Assignee: Board of Regents, The University of Texas System
    Inventors: Sumantra R. Kundu, Sourav Pal, Kalyan Basu, Sajal K Das
  • Patent number: 7873727
    Abstract: A system and computer program for evaluating in real-time streaming multimedia quality. The system including a multimedia server connected to a multimedia source and a remote client in communication with the multimedia server over a network. The multimedia server is configured to receive multimedia content from the multimedia source and to transmit the multimedia content as a multimedia stream. The multimedia stream includes a plurality of audio frames and a plurality of video frames. The remote client is configured to establish a multimedia session with the multimedia server, receive the multimedia stream via the multimedia session, monitor the media quality of the multimedia stream, and passively compute a subjective quality of the multimedia stream.
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: January 18, 2011
    Assignee: Board of Regents, The University of Texas Systems
    Inventors: Sourav Pal, Sumantra Kundu, Kalyan Basu, Sajal Das
  • Publication number: 20090234940
    Abstract: A system and computer program for evaluating in real-time streaming multimedia quality. The system including a multimedia server connected to a multimedia source and a remote client in communication with the multimedia server over a network. The multimedia server is configured to receive multimedia content from the multimedia source and to transmit the multimedia content as a multimedia stream. The multimedia stream includes a plurality of audio frames and a plurality of video frames.
    Type: Application
    Filed: March 13, 2008
    Publication date: September 17, 2009
    Applicant: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
    Inventors: Sourav Pal, Sumantra Kundu, Kalyan Basu, Sajal Das
  • Publication number: 20090003309
    Abstract: The claimed subject matter provides a system and/or a method that facilitates enhancing incoming data communication connectivity within a network. An analyzer component can evaluate a portion of an incoming data communication targeted for a network to identify a context associated with the data communication. A transfer component can direct the incoming data communication to a cluster within the network based at least in part upon the identified context, wherein the cluster includes a physical entity with pre-existing knowledge of the identified context.
    Type: Application
    Filed: June 29, 2007
    Publication date: January 1, 2009
    Applicant: MICROSOFT CORPORATION
    Inventors: Anthony J. Bawcutt, Scott C. Forbes, Kalyan Basu, Jeremy T. Buch, Anoop Gupta, Warren Vincent Barkley, Ross Cutler, Timothy M. Moore, Michael Trommsdorff
  • Publication number: 20080080462
    Abstract: A method and computer program are provided for handing off a mobile device in communication with a first wireless system having a first network address to one or more other wireless systems within communication range of the mobile device. The method and computer program include periodically monitoring by the mobile device of communications from the first wireless system and the other wireless systems, calculating a signal strength associated with each of the monitored communications, selecting one of the other wireless systems, and transferring communication to the selected wireless system upon detection of a predetermined threshold of the signal strength associated with the first wireless system.
    Type: Application
    Filed: October 2, 2006
    Publication date: April 3, 2008
    Applicant: Board of Regents, The University of Texas System
    Inventors: Sumantra R. Kundu, Sourav Pal, Kalyan Basu, Sajal K. Das
  • Patent number: 6947399
    Abstract: A next generation wireless data system and method for handoff from a node in a network is presented. The system includes a core network (CN) and a source and a target radio network subsystem (RNS). The interface between the RNSs is enhanced to reduce unnecessary relay of messaging through the CN and thus will reduce traversing delays as well as the resources utilized in message processing. Two separate methods are proposed for handing off the data traffic to the target RNS at the CN packet processing node. These methods are a multi-cast function that concurrently sends data to the source RNS and the target RNS, and a suspend/resume function which suspends the data flow towards the source RNS and resumes the flow towards the target RNS.
    Type: Grant
    Filed: July 17, 2000
    Date of Patent: September 20, 2005
    Assignee: Nortel Networks Limited
    Inventors: Sanjoy Sen, Tanuj Bagchi, Kalyan Basu
  • Patent number: 6631122
    Abstract: A wireless quality of service (QoS) agent for an all-Internet Protocol (IP) network. The QoS agent couples to an all-IP network. The coupling means includes communication means for transfer of information between the agent and a QoS manager of the all-IP network. The agent is also able to seamlessly extend QoS support for multimedia applications from wireline to wireless and control QoS of the multimedia applications sent over wireless connections on the all-IP network.
    Type: Grant
    Filed: June 11, 1999
    Date of Patent: October 7, 2003
    Assignee: Nortel Networks Limited
    Inventors: Vaidhyanathan Arunachalam, Kalyan Basu, Sanjoy K. Sen
  • Patent number: 6556556
    Abstract: An improved method and system for limiting data packet transmission within a digital mobile telephone communication network, such as a code division multiple access (CDMA) mobile telephone communication network, by discarding unsuccessfully transmitted radio link protocol frames is disclosed. A code division multiple access (CDMA) mobile telephone communication network includes a mobile telephone, a base station, a mobile switching center, and a network Interworking Function. Within the CDMA mobile telephone communication network, each point-to-point protocol data packet is typically divided into multiple radio link protocol frames before their transmissions over an air link. In accordance with a method and system of the present invention, a marker bit is provided for each of the radio link protocol frames. The marker bit can be part of the frame header and will be removed before air link transmission.
    Type: Grant
    Filed: January 29, 1999
    Date of Patent: April 29, 2003
    Assignee: Nortel Networks Limited
    Inventors: Sanjoy Kumar Sen, Arun Arunachalam, Kalyan Basu
  • Patent number: 6466544
    Abstract: A system and method for GPRS MAC procedures to support delay-sensitive, real-time traffic is presented. The system comprises a mobile station able to transmit packets to and receive packets from a base station, where the base station is coupled to a General Packet Radio Service (GPRS) network, and where the GPRS network is coupled to a data network. In an uplink dynamic scheme, the base station receives an empty packet from the mobile station. The base station releases a bandwidth allocated to the mobile station if an implementation dependent time expires and further allocates a reduced portion of the bandwidth to the mobile station if a number of the empty packets are received or if a control packet requesting additional bandwidth is received by the base station. In an uplink fixed scheme, the base station allocates a fixed number of radio resources to the mobile station.
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: October 15, 2002
    Assignee: Nortel Networks Limited
    Inventors: Sanjoy Sen, Tanuj Bagchi, Joseph Ho, Kalyan Basu, Indranil Bob Tapadar, Chiew-Leong Saw
  • Patent number: 6370127
    Abstract: A mobile communications system having a multi-level distributed frame selection and power control architecture includes a plurality of base station transceiver subsystems (BTSs) arranged in cells. Each base station transceiver subsystem (BTS) includes a capability for establishing a radio frequency interface with a subscriber unit in conjunction with a telephone call. A PSEL provides for implementing a power control and frame selection of compressed packet data in conjunction with the telephone call, the PSEL coupled to and being positioned proximate the plurality of base station transceiver subsystems. A router is coupled to the PSEL for routing compressed packet data to and from the PSEL.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: April 9, 2002
    Assignee: Nortel Networks Limited
    Inventors: Abdel-Ghani Daraiseh, Mohamed Landolsi, Kalyan Basu
  • Patent number: 6353902
    Abstract: A system for proactive maintenance of a telecommunications network. A database is created containing characteristics of a plurality of valid logs. These valid logs represent alarms within a network which report status and abnormalities in the network and which have been specifically selected by a network domain expert or administrator from a larger group of logs. The characteristics correspond to a pattern of network fault parameters. The network is monitored for occurrences of a valid log. When a valid log is encountered, future occurrence of a fault is predicted based on an analysis of the valid log and the characteristics found in the database. Corrective measures are taken to prevent the fault from occurring.
    Type: Grant
    Filed: June 8, 1999
    Date of Patent: March 5, 2002
    Assignee: Nortel Networks Limited
    Inventors: Anurudha Kulatunge, Kalyan Basu, Hee C. Lee, Meenakshi Prakash
  • Patent number: 6219539
    Abstract: A communications system includes a dual mode mobile station and a home base station. Dual mode mobile station is operable selectively in CDMA and analog modes. Home base station includes circuitry for establishing wireless communications with mobile station in the analog mode, and circuitry for establishing communications with a wireline communications system, the base station allowing an exchange of information between mobile station and wireline system in the analog mode.
    Type: Grant
    Filed: April 8, 1997
    Date of Patent: April 17, 2001
    Assignee: Nortel Networks Corporation
    Inventors: Kalyan Basu, Girish Patel, Chenhong Huang
  • Patent number: 6173175
    Abstract: The provisioning process of the present invention first determines the average number of units of the system resource that are held per call. This parameter is a function of the call model and call-related event holding times. The average number of units is used, along with the Busy Hour Call Attempts to determine the holding rate, Rresource, of that particular call-related event to be allocated memory. The holding rate is then used by ┌Rresource +7{square root over (Rresource)}┐ to determine the number of resources required to be allocated to the call-related event.
    Type: Grant
    Filed: October 21, 1997
    Date of Patent: January 9, 2001
    Assignee: Nortel Networks Limited
    Inventors: Manar Alazma, Eddy H. Trink, Ping Yang, Kalyan Basu
  • Patent number: 6151499
    Abstract: An integrated MSC/HLR switch accommodates overloads by throttling peripherals during MSC overload conditions, and halting TCAP messages and throttling peripherals during HLR overload conditions.
    Type: Grant
    Filed: July 24, 1998
    Date of Patent: November 21, 2000
    Assignee: Nortel Networks Limited
    Inventors: Madhusudham Vudali, Steven W. Racz, Stephen Bird, Imran Rehman, Kalyan Basu
  • Patent number: 6085335
    Abstract: A self engineering system includes a data acquisition module, a self engineering engine, and a control module. The data acquisition module couples to the communication system and receives current operating data of the communication system. The self engineering engine receives the current operating data and determines new operating parameters of the communication system based upon the current operating data and current operating parameters. The control module implements the new operating parameters within the communication system. The self engineering system may include an expert system that receives the current operating data and, based upon the current operating data and the current operating parameters of the communication system, produces the new operating parameters. The expert system includes a fact library, a knowledge base and an inference engine. The fact library includes configuration data, historical operating data, the current operating parameters and proposed operating parameters.
    Type: Grant
    Filed: December 31, 1997
    Date of Patent: July 4, 2000
    Assignee: Nortel Networks Limited
    Inventors: Surnjani Djoko, Hua Jiang, Hee C. Lee, Sairam Subramanian, Seshagiri Madhavapeddy, Kalyan Basu
  • Patent number: 6014564
    Abstract: The method and apparatus of the architecture of the present invention is accomplished in an embodiment of the present invention by establishing a high speed network interconnection layer between the base station and the mobile switching office. This high speed interconnected network may be an asynchronous transfer mode (ATM) switch. This architecture allows for a dynamic virtual cell area to be configured around a mobile subscriber as a mobile subscriber moves within the network. As a subscriber leaves a previously defined virtual cell area into a new virtual cell area, the high speed switching network sets up a new virtual cell area around the mobile subscriber in his new area. The network is designed to anticipate a user's mobility pattern and to set up the new virtual cell area in advance of the mobile subscriber moving into the that new area.
    Type: Grant
    Filed: July 15, 1997
    Date of Patent: January 11, 2000
    Assignee: Nortel Networks Corporation
    Inventors: Gerardo Donis, Kalyan Basu, David Munoz
  • Patent number: 5896568
    Abstract: A wireless access architecture, having redistributed wireless access functions, comprises a plurality of cell sites connected to a main switching point. The cell sites communicate with cellular users within their respective cell site areas and comprise a communication segment for exchanging communication signals with the cellular users. The main switching point controls the communication with the cellular users and the communication segment and includes a processing segment for processing the communication signals from the cell sites. The processing segment includes a segment for modulating and demodulating the communication signals, and a segment for bit stream processing the communication signals.
    Type: Grant
    Filed: September 6, 1996
    Date of Patent: April 20, 1999
    Assignee: Northern Telecom Limited
    Inventors: Stone Tseng, Kalyan Basu, Yixin Zhu, Khaled Elsayed
  • Patent number: 5875400
    Abstract: In a cellular mobile access communications system each mobile terminal registers its location at intervals. From the registration history of each mobile, a probable group of cells within which a mobile terminal may be located is predicted. When a mobile is to be paged, the paging message is transmitted to the predicted cell group. If no response is received from the terminal, the page message is then broadcast to further system cells. This reduces the overall paging load on the system.
    Type: Grant
    Filed: April 18, 1995
    Date of Patent: February 23, 1999
    Assignee: Northern Telecom Limited
    Inventors: Seshagiri Rao Madhavapeddy, Kalyan Basu, Allison V. Roberts, Michael John McCarthy, Russell David Balcom, Lance Miquel LaBauve
  • Patent number: 5867787
    Abstract: An integrated MSC/HLR switch accommodates overloads by throttling peripherals during MSC overload conditions, and halting TCAP messages and throttling peripherals during HLR overload conditions.
    Type: Grant
    Filed: July 31, 1995
    Date of Patent: February 2, 1999
    Assignee: Northern Telecom Limited
    Inventors: Madhusudham Vudali, Steven W. Racz, Stephen Bird, Imran Rehman, Kalyan Basu
  • Patent number: 5828963
    Abstract: A micro-cellular radio communications system (microsystem) is arranged to re-use radio frequency channels which are assigned for use in a cellular radio system (macrosystem) in the same vicinity. The microsystem maintains a list of each frequency channel which is in current use in any microcell of the microsystem. In each microcell of the microsystem a signal characteristic, for example received signal strength, of each frequency channel, is repeatedly measured when the channel is not in current use in any microcell of the microsystem, and the measurements are used to determine a long-term statistical preference for re-use of a favoured set of the frequency channels in that microcell. For each microcell, the frequency channels in the favoured set are given a short-term order for actual use in dependence upon frequent measurements of the signal characteristic for the microcell regardless of whether or not the channel is in current use in any other microcell of the microsystem.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: October 27, 1998
    Assignee: Northern Telecom Limited
    Inventors: Sudheer A. Grandhi, Seshagiri R. Madhavapeddy, Kalyan Basu, Steven J. Willhoff, Hong D. Staley