• Patent Title: Method and system for forward link beam forming in wireless communications
  • Application No.: US09771137
    Application Date: 2001-01-24
  • Publication No.: US07054662B2
    Publication Date: 2006-05-30
  • Inventor: Bruce A. Judson
  • Applicant: Bruce A. Judson
  • Applicant Address: US CA San Diego
  • Assignee: Qualcomm, Inc.
  • Current Assignee: Qualcomm, Inc.
  • Current Assignee Address: US CA San Diego
  • Agent Philip Wadsworth; Sandra L. Godsey; Thomas R. Rouse
  • Main IPC: H04M1/00
  • IPC: H04M1/00
Method and system for forward link beam forming in wireless communications
Abstract:
According to one embodiment, an antenna beam pattern is used to send a communication signal to a user. For example, the antenna beam pattern can be formed using adaptive antenna array technology on the forward link of a wireless communication system. A control signal from the user is used to determine a statistic. For example, the control signal can be a power control bit sent by the user on the return link. The statistic can be an average of the power control bit values over a specified time interval. The statistic is used to narrow the antenna beam pattern and direct it toward the user. For example, a dithering algorithm can be used to optimize the antenna beam pattern. After a call is completed, an optimized antenna beam pattern specific to each user can be stored for the next call to make the optimizing process faster and more efficient.
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