Patents by Inventor Farhad Bassirat

Farhad Bassirat 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).

  • Publication number: 20210385051
    Abstract: Systems and methods of adaptive bandwidth (BW) management are provided by a control unit of distribution and central units to monitor power and traffic loads at a plurality of nodes in a network; a BW management unit communicating with the control unit to reassign a set of network slices with a set of smaller bandwidth parts (BWPs); the BW management unit configured to define a smaller BWP from a slice mapping for the slice reassignment during a AC power outage, the slicing mapping includes network slices tied to smaller BWPs in the network; and the BW management unit configured to adapt BW for users at the node by reassigning of at least one network slice with a defined smaller BWP at the node in response to a condition determined by the BW management unit, the condition of at least one of a AC power outage, and reduced traffic load at the node.
    Type: Application
    Filed: June 3, 2020
    Publication date: December 9, 2021
    Applicant: DISH Wireless L.L.C.
    Inventors: Dhaval Mehta, Farhad Bassirat, Siddhartha Chenumolu, Amit Pathania
  • Publication number: 20210385690
    Abstract: Systems and methods are provided for adaptive bandwidth (BW) management configuring an element management control unit including a set of distribution/central units (DU/CU) for monitoring power and traffic loads at a plurality of cell sites in a network; communicating with a BW management unit coupled to the element management system to adapt BW for users at cell sites by moving users to a set of smaller bandwidth parts (BWPs) at a cell site in response to a set of conditions of AC power outages and reduced traffic loads detected by the BW management unit, and in response to at least one of the detected conditions, instructing based on data from the DU/CU to the BW management unit to move user traffic to a designated lower BWP of the set of smaller BWPs at the cell site while shutting down other BWPs at the cell site to save the power of an operating cell site.
    Type: Application
    Filed: August 3, 2021
    Publication date: December 9, 2021
    Applicant: DISH Wireless L.L.C.
    Inventors: Dhaval Mehta, Farhad Bassirat, Siddhartha Chenumolu, Amit Pathania
  • Publication number: 20210385689
    Abstract: Systems and methods are provided for adaptive bandwidth (BW) management configuring an element management control unit including a set of distribution/central units (DU/CU) for monitoring power and traffic loads at a plurality of cell sites in a network; communicating with a BW management unit coupled to the element management system to adapt BW for users at cell sites by moving users to a set of smaller bandwidth parts (BWPs) at a cell site in response to a set of conditions of AC power outages and reduced traffic loads detected by the BW management unit, and in response to at least one of the detected conditions, instructing based on data from the DU/CU to the BW management unit to move user traffic to a designated lower BWP of the set of smaller BWPs at the cell site while shutting down other BWPs at the cell site to save the power of an operating cell site.
    Type: Application
    Filed: June 3, 2020
    Publication date: December 9, 2021
    Applicant: DISH Wireless L.L.C.
    Inventors: Dhaval Mehta, Farhad Bassirat, Siddhartha Chenumolu, Amit Pathania
  • Publication number: 20210360613
    Abstract: Various arrangements for improving cell coverage are presented. A cellular network can define a first bandwidth part and a second bandwidth part to be implemented concurrently by a base station of the cellular network. The first bandwidth part and the second bandwidth part do not overlap and may be separated by a guard band. The first bandwidth part can have a greater bandwidth and greater sub-carrier spacing than the second bandwidth part. The cellular network can determine a first set of user equipment to use the first bandwidth part for communication with the base station and a second set of user equipment to use the second bandwidth part for communication with the base station. Communication with the first set of user equipment using the first bandwidth part and the second set of user equipment using the second bandwidth part may be performed.
    Type: Application
    Filed: July 28, 2021
    Publication date: November 18, 2021
    Inventors: Farhad Bassirat, Mariam Sorond, Siddhartha Chenumolu, Mehdi Alasti
  • Patent number: 11109382
    Abstract: Various arrangements for improving cell coverage are presented. A cellular network can define a first bandwidth part and a second bandwidth part to be implemented concurrently by a base station of the cellular network. The first bandwidth part and the second bandwidth part do not overlap and may be separated by a guard band. The first bandwidth part can have a greater bandwidth and greater sub-carrier spacing than the second bandwidth part. The cellular network can determine a first set of user equipment to use the first bandwidth part for communication with the base station and a second set of user equipment to use the second bandwidth part for communication with the base station. Communication with the first set of user equipment using the first bandwidth part and the second set of user equipment using the second bandwidth part may be performed.
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: August 31, 2021
    Assignee: DISH Wireless L.L.C.
    Inventors: Farhad Bassirat, Mariam Sorond, Siddhartha Chenumolu, Mehdi Alasti
  • Publication number: 20210194648
    Abstract: A new radio base station establishes a first and a second component carrier in carrier aggregation. The first and second component carrier overlap each other. The base station transmits signaling and control information exclusively on the first component carrier. The base station transmits data packets on the first component carrier and on a non-overlapping portion of the second component carrier.
    Type: Application
    Filed: December 19, 2019
    Publication date: June 24, 2021
    Inventors: Farhad Bassirat, Mehdi Alasti, Siddhartha Chenumolu
  • Publication number: 20210136766
    Abstract: Various arrangements for transitioning the bandwidth allocation of a cellular network, such as at a base station, are presented. Bandwidth parts may be defined for communication with the cellular network, such as on a per-base station basis. At a given time, two of these bandwidth parts may be actively used for communication by different UE for communication with the base station. A determination to adjust a bandwidth allocation may be made. A series of transitions may be performed to migrate from the first two of these bandwidth parts to the second two of the bandwidth parts such that interference does not occur.
    Type: Application
    Filed: January 14, 2021
    Publication date: May 6, 2021
    Inventors: Farhad Bassirat, Mariam Sorond, Siddhartha Chenumolu, Mehdi Alasti
  • Patent number: 10932269
    Abstract: Various arrangements for transitioning the bandwidth allocation of a base station are presented. Four bandwidth parts may be defined for communication with the base station. At a given time, two of these bandwidth parts may be actively used for communication by different UE for communication with the base station. In response to network traffic, a determination to adjust a bandwidth allocation may be made. A series of transitions may be performed to migrate from the first two of these bandwidth parts to the second two of the bandwidth parts such that interference does not occur.
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: February 23, 2021
    Assignee: DISH Wireless L.L.C.
    Inventors: Farhad Bassirat, Mariam Sorond, Siddhartha Chenumolu, Mehdi Alasti
  • Publication number: 20210029697
    Abstract: Various arrangements for transitioning the bandwidth allocation of a base station are presented. Four bandwidth parts may be defined for communication with the base station. At a given time, two of these bandwidth parts may be actively used for communication by different UE for communication with the base station. In response to network traffic, a determination to adjust a bandwidth allocation may be made. A series of transitions may be performed to migrate from the first two of these bandwidth parts to the second two of the bandwidth parts such that interference does not occur.
    Type: Application
    Filed: July 22, 2019
    Publication date: January 28, 2021
    Inventors: Farhad Bassirat, Mariam Sorond, Siddhartha Chenumolu, Mehdi Alasti
  • Publication number: 20210029691
    Abstract: Various arrangements for improving cell coverage are presented. A cellular network can define a first bandwidth part and a second bandwidth part to be implemented concurrently by a base station of the cellular network. The first bandwidth part and the second bandwidth part do not overlap and may be separated by a guard band. The first bandwidth part can have a greater bandwidth and greater sub-carrier spacing than the second bandwidth part. The cellular network can determine a first set of user equipment to use the first bandwidth part for communication with the base station and a second set of user equipment to use the second bandwidth part for communication with the base station. Communication with the first set of user equipment using the first bandwidth part and the second set of user equipment using the second bandwidth part may be performed.
    Type: Application
    Filed: July 22, 2019
    Publication date: January 28, 2021
    Inventors: Farhad Bassirat, Mariam Sorond, Siddhartha Chenumolu, Mehdi Alasti
  • Patent number: 8717965
    Abstract: A wireless communications network includes a subscriber station acting as a relay station (or ad-hoc repeater) between another subscriber station (a child subscriber station) and a base station (BTS) when there is no LOS between the other subscriber station and the base station, but there is LOS between the other subscriber station and the relay station. The BTS divides each of the downlink (DL) and uplink (UL) sub-frames into P1 and P2 portions and schedules transmissions of child subscriber DL and UL data during P1 of the DL and UL frames (from the BTS), respectively. The relay station receives the child subscriber DL and UL data, stores the data, and transmits/forwards the child subscriber DL and UL data during P2 of the DL and UL frame (to the BTS), respectively.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: May 6, 2014
    Assignee: Apple Inc.
    Inventors: Chu-Rui Chang, Farhad Bassirat
  • Patent number: 8059567
    Abstract: Distribution of mobile stations across carriers of multiple frequency bands is achieved by using either a static distribution mechanism or a dynamic distribution mechanism. With the static distribution mechanism, a combination of a redirection message and a channel list is employed. With the dynamic distribution mechanism, the use of redirection messages is enabled on a dynamic basis for a predefined time interval.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: November 15, 2011
    Assignee: Ericsson AB
    Inventors: Michael P. Woodmansee, Farhad Bassirat
  • Patent number: 8050234
    Abstract: A cellular wireless communication system and method of operation manages Walsh codes in order to ensure that sufficient Walsh codes are available to prevent call blocking and to support additional hand-off operations. In an initial operating condition, the cellular wireless communication system services normal hand-off operations in which a maximum number of cells and sectors may participate in hand-off. With hand-off operations according to the present invention, each cell or sector participating in hand-off for a mobile terminal uses a unique Walsh code for covering its forward link signals. When the number of Walsh codes available for servicing new calls is reduced so that it meets or exceeds a Walsh code availability threshold, the number of cells and sectors that may participate in hand-off is reduced from the maximum number. In the number of participating cells/sectors results in release or non-use of some Walsh codes.
    Type: Grant
    Filed: May 22, 2009
    Date of Patent: November 1, 2011
    Assignee: Ericsson AB
    Inventors: Chang-Gang Zhang, Farhad Bassirat, Martin Kendall
  • Publication number: 20090232102
    Abstract: A cellular wireless communication system and method of operation manages Walsh codes in order to ensure that sufficient Walsh codes are available to prevent call blocking and to support additional hand-off operations. In an initial operating condition, the cellular wireless communication system services normal hand-off operations in which a maximum number of cells and sectors may participate in hand-off. With hand-off operations according to the present invention, each cell or sector participating in hand-off for a mobile terminal uses a unique Walsh code for covering its forward link signals. When the number of Walsh codes available for servicing new calls is reduced so that it meets or exceeds a Walsh code availability threshold, the number of cells and sectors that may participate in hand-off is reduced from the maximum number. In the number of participating cells/sectors results in release or non-use of some Walsh codes.
    Type: Application
    Filed: May 22, 2009
    Publication date: September 17, 2009
    Applicant: NORTEL NETWORKS LIMITED
    Inventors: Chang-Gang Zhang, Farhad Bassirat, Martin Kendall
  • Patent number: 7539162
    Abstract: A cellular wireless communication system and method of operation manages Walsh codes in order to ensure that sufficient Walsh codes are available to prevent call blocking and to support additional hand-off operations. In an initial operating condition, the cellular wireless communication system services normal hand-off operations in which a maximum number of cells and sectors may participate in hand-off. With hand-off operations according to the present invention, each cell or sector participating in hand-off for a mobile terminal uses a unique Walsh code for covering its forward link signals. When the number of Walsh codes available for servicing new calls is reduced so that it meets or exceeds a Walsh code availability threshold, the number of cells and sectors that may participate in hand-off is reduced from the maximum number. In the number of participating cells/sectors results in release or non-use of some Walsh codes.
    Type: Grant
    Filed: December 24, 2001
    Date of Patent: May 26, 2009
    Assignee: Nortel Networks Limited
    Inventors: Chang-Gang Zhang, Farhad Bassirat, Martin Kendall
  • Publication number: 20080186900
    Abstract: A wireless communications network includes a subscriber station acting as a relay station (or ad-hoc repeater) between another subscriber station (a child subscriber station) and a base station (BTS) when there is no LOS between the other subscriber station and the base station, but there is LOS between the other subscriber station and the relay station. The BTS divides each of the downlink (DL) and uplink (UL) sub-frames into P1 and P2 portions and schedules transmissions of child subscriber DL and UL data during P1 of the DL and UL frames (from the BTS), respectively. The relay station receives the child subscriber DL and UL data, stores the data, and transmits/forwards the child subscriber DL and UL data during P2 of the DL and UL frame (to the BTS), respectively.
    Type: Application
    Filed: November 30, 2007
    Publication date: August 7, 2008
    Applicant: Nortel Networks Limited
    Inventors: Chu-Rui Chang, Farhad Bassirat
  • Publication number: 20050041612
    Abstract: A cellular wireless communication system and method of operation manages Walsh codes in order to ensure that sufficient Walsh codes are available to prevent call blocking and to support additional hand-off operations. In an initial operating condition, the cellular wireless communication system services normal hand-off operations in which a maximum number of cells and sectors may participate in hand-off. With hand-off operations according to the present invention, each cell or sector participating in hand-off for a mobile terminal uses a unique Walsh code for covering its forward link signals. When the number of Walsh codes available for servicing new calls is reduced so that it meets or exceeds a Walsh code availability threshold, the number of cells and sectors that may participate in hand-off is reduced from the maximum number. In the number of participating cells/sectors results in release or non-use of some Walsh codes.
    Type: Application
    Filed: December 24, 2001
    Publication date: February 24, 2005
    Inventors: Chang-Gang Zhang, Farhad Bassirat, Martin Kendall
  • Patent number: 6745051
    Abstract: An antenna structure which has a platform defining at least six sectors having a vertex contained substantially within the platform. At least six dual polarized antennas are positioned on the platform for transmitting and receiving signals substantially in each of the at least six sectors, respectively.
    Type: Grant
    Filed: July 10, 2000
    Date of Patent: June 1, 2004
    Assignee: Nortel Networks Limited
    Inventor: Farhad Bassirat
  • Patent number: 6721571
    Abstract: A wireless communication system infrastructure services wireless communications within a service coverage area. A digital enclosure includes a plurality of wireless communication processing components that perform digital processing functions. A plurality of radio enclosures couple to the digital enclosure via communication links and each service wireless communications within a corresponding geographic area of the service coverage area. During operation of the wireless communication system infrastructure, two radio enclosures of the plurality of radio enclosures share a communication processing component of the digital enclosure while jointly servicing a single wireless communication. The two radio enclosures reside at respective geographic locations that are separated by a geographic distance such that each of the radio enclosures services a respective cell. Each of the radio enclosures may service a plurality of sectors that form the cell.
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: April 13, 2004
    Assignee: Nortel Networks Ltd.
    Inventors: Scott H. Tran, Farhad Bassirat, Chang-Gang Zhang, Kendall Martin
  • Patent number: 6507741
    Abstract: An RF repeater having a fixed or adjustable time delay inserted in the reverse path and/or forward path of the RF repeater is used in a first cell for improving hard handoff performance from the first cell to a second cell. Certain factors associated with the CDMA hard hand-off process effectively reduce the coverage area of the first cell, including the round-trip delay (RTD) uncertainty, the time needed to perform the hard hand-off process, and a higher forward link Eb/No requirement. Use of an RF repeater in accordance with the increases the effective coverage area of the first cell. The delayed signal from the RF repeater also allows the base station to determine the location of the subscriber station thereby identifying the particular adjacent cell to which the subscriber station will be switched (hard hand-off).
    Type: Grant
    Filed: December 17, 1997
    Date of Patent: January 14, 2003
    Assignee: Nortel Networks Limited
    Inventor: Farhad Bassirat