发明授权
US5539921A Apparatus for reducing ring-alert power and method therefor 失效
用于降低环形报警功率的装置及其方法

  • 专利标题: Apparatus for reducing ring-alert power and method therefor
  • 专利标题(中): 用于降低环形报警功率的装置及其方法
  • 申请号: US311223
    申请日: 1994-09-23
  • 公开(公告)号: US5539921A
    公开(公告)日: 1996-07-23
  • 发明人: Daniel R. Tayloe
  • 申请人: Daniel R. Tayloe
  • 申请人地址: IL Schaumburg
  • 专利权人: Motorola, Inc.
  • 当前专利权人: Motorola, Inc.
  • 当前专利权人地址: IL Schaumburg
  • 主分类号: H04B7/185
  • IPC分类号: H04B7/185 H04Q7/22
Apparatus for reducing ring-alert power and method therefor
摘要:
In a satellite communication system, ring-alerts are broadcast in a sequence that maximizes the time between when ring-alerts are issued in any adjacent antenna beam. Satellite power is conserved by allowing time for a subscriber unit to respond, after which subsequent ring-alerts directed at that subscriber are canceled. When a gateway receives a request for a ring-alert, the satellite and the antenna beams are identified which are currently serving the location of the subscriber unit being called. The satellite is provided a list of antenna beams and proceeds to broadcast ring-alerts directed at subscriber units within the identified antenna beams. Unsent ring-alerts are canceled when responses from the subscriber units are received.
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