Patent ID: 7502356

Claim:
A method for detecting traffic channel signal transmission in a rake receiver, the method comprising steps of: compensating traffic channel signals according to fingers using estimated pilot channel signals; combining the compensated finger-based traffic, channel signals and estimating at least one signal-to-noise ratio for at least one traffic channel; comparing the at least one of estimated signal-to-noise ratio with a preset threshold value to detect continuous or discontinous transmission of the at least one traffic channel based upon the comparing; wherein the estimating of the at least one signal-to-noise ratio for the at least one traffic channel comparises using: SNR TCH . Combined ′ = fn P ⁡ ( traffic ⁢ ⁢ channel ⁢ ⁢ noise , noise ⁢ ⁢ power ) + fn Q ⁡ ( PCH ⁢ ⁢ power , noise ⁢ ⁢ power ) + ∑ f ≠ i F ⁢ ⁢ ∑ i F ⁢ ⁢ IFSC ( f , i ⁢  c , noise ⁢ ⁢ power ) + ∑ f ≠ i F ⁢ ⁢ ∑ i F ⁢ ⁢ IFNC ( f , i ⁢  c , noise ⁢ ⁢ power ) , wherein IFSC(f, i|c, noise power) indicates Inter-Finger Signal correlation for noise and traffic channel signal components of respective fingers, and IFNC(F, i|c, noise power) indicates Inter-Finger Noise Correlation for noise components for respective fingers which are applied wtth a weight by channel component c.