Patent ID: 7245878

Claim:
A method of detecting a silent frame at a mobile station in a GSM transmission comprising: (a) receiving a data burst intended for said mobile station; (b) determining a signal-to-interference-and-noise ratio (SINR) for said data burst as: SINR = SLa NLa = 1 148 ⁢ ∑ k = 1 148 ⁢ ⁢  y ⁡ ( k )  2 1 148 ⁢ ∑ k = 1 148 ⁢ ⁢  n ⁡ ( k )  2 ; and (c) outputting a silent frame indication signal (SI) determined by SI = { 1 , if ⁢ ⁢ SINR < T 0 , if ⁢ ⁢ SINR ≥ T where if SI is 1, then identifying said data burst as from a silent frame.