Patent ID: 6917808

Claim:
A method of evaluating need for handoff of a mobile station in a wireless communication system from a base station operating at a first frequency (hereafter “f 1 base station”) to a base station operating at a second frequency (hereafter “f 2 base station”), said method comprising the steps of: evaluating a geographic positioning of said mobile station in respect to a signal coverage area of said f 1 base station and a signal coverage area of said f 2 base station; computing an aggregate value of a set of pilot energy signals received at said mobile station; obtaining a value of a pilot energy signal transmitted by said f 2 base station and comparing it with said aggregate value; and determining that a hand off of said base station connection should be made if said aggregate value is less than said f 2 base station transmitted pilot energy signal value plus a preselected threshold value; wherein said aggregate value is computed according to the equation: AGG = 10 × log 10 ⁡ ( ∑ n = 1 k ⁢ ⁢ 10 E C 10 / On ) where k=number of active set pilots.