×

System and method for periodic ranging in sleep mode in broadband wireless access communication system

  • US 20050197171A1
  • Filed: 03/07/2005
  • Published: 09/08/2005
  • Est. Priority Date: 03/05/2004
  • Status: Abandoned Application
First Claim
Patent Images

1. A method for performing periodic ranging in a broadband wireless access communication system having an awake mode in which data to be transmitted between a mobile subscriber station and a base station exists and the sleep mode in which data to be transmitted between the mobile subscriber station and the base station is non-existent, the sleep mode having a sleep interval and a listening interval, the mobile subscriber station being capable of receiving data in the listening interval and being incapable of receiving data in the sleep interval, the method comprising the steps of:

  • reporting, by the base station. to the mobile subscriber station in a listening interval before the sleep interval that the mobile subscriber station must perform the periodic ranging in the sleep interval, when the base station detects that it is necessary for the mobile subscriber station in the sleep mode to perform the periodic ranging at a particular time point in the sleep interval; and

    receiving, by the mobile subscriber station, the report from the base station in the listening interval, transiting from the sleep mode into the awake mode, and performing the periodic ranging at the particular time point.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×