Patent ID: 8644290
Filing Date: 2014-02-04
Classification: H04J

Abstract:
1. A coordination-free rendezvous method for a plurality of unlicensed devices in different communication networks to detect a plurality of licensed devices, the method comprising: dividing time of each of the unlicensed devices into a plurality of superslots, and dividing each said superslot into a plurality of slots; selecting at least one first-class slot and at least one second-class slot out of the slots of each said superslot, wherein when the first-class slots or the second-class slots occur, the unlicensed devices perform the same operations to detect the licensed devices, whereby the licensed devices are not interfered with the unlicensed devices; changing a relative position between the first-class slot and the second-class slot every said superslot, wherein a speed level of the second-class slot is higher than a speed level of the first-class slot, whereby the first-class slots or the second-class slots between or among the devices are able to overlap each other in a periodic manner, whereby the unlicensed devices in different communication networks are able to perform the same operations at the same time to detect the licensed devices on a coordination-free basis.