Patent ID: 7864813

Claim:
Equipment for determining a quantity to be measured from a communication system, the equipment including a processor system arranged to: calculate values of time difference for first measurement messages, which have been transmitted from a first area of said communication system to a second area of said communication system, the value of the time difference relating to each first measurement message being essentially a difference between an instant of reception measured in said second area and an instant of transmission measured in said first area for the measurement message in question, classify said values of the time difference into ranges of values having predetermined lower and upper limits, calculate for each range of values an occurrence frequency indicator, which is proportional to the number of values of said time difference that belong to said range of values, fit a curve to the occurrence frequency indicators of said ranges of values, determine on the basis of said curve an estimate of the minimum value of said time difference, and determine said quantity to be measured on the basis of the estimate of the minimum value of said time difference and information related to a second measurement message, which said second measurement message has been sent from said second area to said first area, and which said information is based on an instant of transmission measured in said second area and an instant of reception measured in said first area for said second measurement message.