Estimation of received signal strength

Apparatus for estimating a size of reverse link resources provided by a base-station transceiver system (BTS), comprising a control unit which is adapted to:

• perform a first measurement of a first signal strength received at the BTS;
• perform, subsequent to the first measurement, a second measurement of a second signal strength received at the BTS;
• perform, subsequent to the second measurement, a third measurement of a third signal strength received at the BTS;
• compare the first measurement with the second measurement so as to determine an initial minimum signal strength;
• add at a predetermined time an aging value to the initial minimum signal strength so as to form an updated minimum signal strength;
• form a comparison between the updated minimum signal strength and the third measurement;
• determine from the comparison a minimum of the updated minimum signal strength and the third measurement to be a minimum received signal strength;
• and
• determine the size of the reverse link resources provided by the BTS in response to the minimum received signal strength.