Architecture utilizing frequency reuse in accommodating user-link and feeder-link transmissions

US6751458B1 · kind B1 · utility

Assignee

• DIRECTV, LLC · US

Inventors

• Weizheng Wang · Rancho Palos Verdes, US
• Donald C. D. Chang · Newbury Park, US
• Ming U. Chang · Rancho Palos Verdes, US
• Ying Feria · Manhattan Beach, US
• Alan Cha · Glendale, US

Key dates

• Filing date: Jul 7, 2000
• Grant date: Jun 15, 2004
• Expiry date: Oct 5, 2021

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B7/18539
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A communication system has a high altitude communication device generating a plurality of user link beams having a first communication characteristic and a feeder link having a first communication characteristic. A gateway terminal receives the user link beam. A user terminal receives at least one of the user link beams. The plurality of user link beams comprises a first user link beam within a first cell and a first isolation zone outside the first cell. The plurality of user link beams comprises a second user link beam having the first communication characteristic and positioned within a second cell and a second isolation zone outside said second cell. The second isolation zone overlaps the first isolation zone. The feeder link is positioned within the first isolation zone and the second isolation zone. The feeder link has the first communication characteristic.