may be termed u201c minimum round trip time u201d its value can be determined by the proxy using a train of packets to the client some of which are guaranteed to be forwarded immediately by the base station either because the client is in active mode or because they happen to be sent immediately before a beacon is sent due to very small mac level delays the measured min_rtt values are actually a randomly distributed collection of values with a lower bound determined by the size of the probe packets the wlan technology and base station used in summary any measured rtt round trip time that is very close within one or two msecs from this bound is considered to be a min_rtt fig2 illustrates a process 200 for probing to determine a u201c beacon time u201d parameter note that this parameter characterizes the wlan base station and therefore needs to be determined only for the first client using the base station as shown the proxy starts the process at step 210 next a probe packet is sent to a device a response is awaited and the response delay is measured in step 220 if the measured response delay is not approximately equal to the predetermined parameter min_rtt in step 230 then the delay is calculated and a delay interval is traversed in step 240 before sending out another probe packet in step 220 if the response delay is indeed approximately equal to min_rtt in step 230 then the resultant parameter beacon_time is recorded in step 250 fig3 illustrates a process 300 for probing to determine a u201c beacon interval u201d parameter as shown the proxy starts the process at step.