×

MAC controller and clock synchronizing method for use with the same

  • US 7,330,459 B2
  • Filed: 09/25/2003
  • Issued: 02/12/2008
  • Est. Priority Date: 10/22/2002
  • Status: Active Grant
First Claim
Patent Images

1. A method for synchronizing clocks of a station and an access point in a wireless local area network, comprising steps of:

  • asserting a request signal from a station to an access point;

    asserting a responsive signal packet containing a time stamp in response to said request signal from said access point to said station;

    tagging a local time value to said responsive signal packet at said station;

    operating said time stamp and said local time value at said station according to a control program to obtain a difference T; and

    determining switching timing between a working and a sleeping modes of said station after said clocks of said station and said access point are synchronized, which comprises sub-steps of;

    obtaining next target beacon transmission time by operating a beacon interval and said adjusted local time value; and

    determining said switching timing between said working and said sleeping modes of said station according to said local time value, said difference T and said next target beacon transmission time.

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