Connectivity issues-

I was looking thru the Event log for my router (Netgear CG4500BD) and noticed this message occurring frequently- {Started Unicast Maintenance Ranging - No Response received ...} Each time it happens, FREQUENTLY, i lose connectivity for 1-2 minutes. While not exactly a, "Crisis," it is frustrating, none the less. Has anybody else experienced this? Any suggestions as to a fix? Thanks.