Patent ID: 8548462

Claim:
A method of determining user equipment cell identification in a communication system, the method comprising: receiving cell identification with user equipment; tracking cell identification age with user equipment after receiving; comparing the cell identification age to a predefined value, wherein outcome of comparing the cell identification age to the predefined value provides information about quality of the cell identification, wherein the cell identification age continues to increase past the predefined value until a new cell identification is received; and transmitting the cell identification and the cell identification age from the user equipment to a network, wherein the cell identification age is the difference between the time that the cell identification is transmitted from the user equipment to the network and the time that the user equipment received the cell identification; wherein when the cell identification age is less than the predefined value, the cell identification is used for determining position information of the user equipment, and when the cell identification age is greater than the predefined value, the new cell identification received from an ATI (Any Time Interrogation) to a HLR (home location registry) is used for determining position of the user equipment.