Patent ID: 8391795

Claim:
A method for ranking frequencies, comprising: 1) obtaining m frequencies having the highest signal intensity in neighboring cells, the m frequencies acting as alternative frequencies, and m being greater than 1; 2) obtaining all n frequencies in current neighboring cells after a predetermined time period; 3) obtaining one frequency having the lowest signal intensity among the alternative frequencies as a weakest frequency; 4) selecting one frequency X from the n frequencies except the m frequencies; 5) comparing frequency X with the weakest frequency, and replacing the weakest frequency with the frequency X if the signal intensity of the frequency X is higher than the signal intensity of the weakest frequency so as to update the alternative frequencies; 6) judging whether each of the n frequencies except the m frequencies is selected: if the determination is in the affirmative, outputting the alternative frequencies; otherwise, repeating the above steps 3) to 5); and 7) ranking the alternative frequencies in the order of signal intensity.