Patents by Inventor Ashrafur Reza

Ashrafur Reza 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).

  • Opportunistic antenna switch diversity (ASDIV) in carrier aggregation
    Patent number: 9935676
    Abstract: Aspects of the present disclosure relate to techniques for switching antennas in devices that have multiple antennas for communicating via aggregation of multiple carriers.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: April 3, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Ashrafur Reza, Peyman Hesami, Ning He, Robert King Chan, Sagar Kakade
  • OPPORTUNISTIC ANTENNA SWITCH DIVERSITY (ASDIV) IN CARRIER AGGREGATION
    Publication number: 20170054470
    Abstract: Aspects of the present disclosure relate to techniques for switching antennas in devices that have multiple antennas for communicating via aggregation of multiple carriers.
    Type: Application
    Filed: September 18, 2015
    Publication date: February 23, 2017
    Inventors: Ashrafur REZA, Peyman HESAMI, Ning HE, Robert King CHAN, Sagar KAKADE
  • Method and apparatus for performing inter-frequency handoff in a wireless communication network
    Patent number: 8792889
    Abstract: Techniques for performing inter-frequency handoff in a wireless communication network are described. An access terminal may acquire a first sector on a first frequency (e.g., at power up), receive an overhead message from the first sector, obtain neighbor list information from the overhead message, and store this information. The access terminal may be directed from the first frequency to a second frequency, e.g., to balance network load. The access terminal may perform handoff to a second sector on the second frequency. This handoff may be unsuccessful if the access terminal is within the coverage of the first sector but outside the coverage of the second sector, even though the two sectors may be co-located. If the handoff is unsuccessful, then the access terminal may determine a neighbor sector based on the stored neighbor list information, then attempt acquisition of the neighbor sector, and perform handoff to the neighbor sector if acquired.
    Type: Grant
    Filed: October 2, 2007
    Date of Patent: July 29, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Jun Wang, Marie-Pierre Michele Daniele Aldinger, Ashrafur Reza, Mahmudur Rahman
  • METHOD AND APPARATUS FOR PERFORMING INTER-FREQUENCY HANDOFF IN A WIRELESS COMMUNICATION NETWORK
    Publication number: 20090088158
    Abstract: Techniques for performing inter-frequency handoff in a wireless communication network are described. An access terminal may acquire a first sector on a first frequency (e.g., at power up), receive an overhead message from the first sector, obtain neighbor list information from the overhead message, and store this information. The access terminal may be directed from the first frequency to a second frequency, e.g., to balance network load. The access terminal may perform handoff to a second sector on the second frequency. This handoff may be unsuccessful if the access terminal is within the coverage of the first sector but outside the coverage of the second sector, even though the two sectors may be co-located. If the handoff is unsuccessful, then the access terminal may determine a neighbor sector based on the stored neighbor list information, then attempt acquisition of the neighbor sector, and perform handoff to the neighbor sector if acquired.
    Type: Application
    Filed: October 2, 2007
    Publication date: April 2, 2009
    Applicant: QUALCOMM Incorporated
    Inventors: Jun Wang, Marie-Pierre Michele Daniele Aldinger, MD. Ashrafur Reza, ATM Mahmudur Rahman