In the event that a plurality of mobile devices use the same link identification codes, the immobile device requests the mobile devices to change the same link identification code to {HEAD ~ different ones} among {TAIL ~ the mobile devices} 
among
In the event that a plurality of mobile devices use the same link identification codes , the immobile device requests the mobile devices to change the same link identification code to { HEAD ~ different ones } among { TAIL ~ the mobile devices }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL