Patent ID: 8725155
Filing Date: 2014-05-13
Classification: H04W

Abstract:
1. A location management method for a mobile terminal in a telecommunications network in which the mobile terminal can travel from a first cell in the network to a second cell in the network, said method, implemented on the mobile terminal, comprising: receiving a first TMSI identifier by the mobile terminal while in a first cell, the first TMSI identifier associated with the first cell, said first TMSI identifier enabling locating the mobile terminal in the network when the mobile terminal is within the first cell; receiving a second TMSI identifier by the mobile terminal when the mobile terminal moves to a second cell, the second TMSI identifier associated with the second cell, said second TMSI identifier enabling locating the mobile terminal in the network when the mobile terminal is within the second cell; storing the first TMSI and second TMSI identifiers in a table of identifiers for later use; being able to use the first TMSI identifier at a later time or to use the second TMSI identifier at a later time depending on whether the mobile terminal moves from the second cell to a third cell then back to the first cell and uses the first TMSI identifier again or moves from the second cell to a third cell then back to the second cell and uses the second TMSI identifier again; detecting entry back into the second cell after being in the third cell; verifying whether an identifier, such as the second TMSI identifier, associated with the second cell exists in the table of identifiers; when the second TMSI identifier associated with the second cell exists in the table of identifiers, using the second TMSI identifier in the second cell and not sending an identity request or receiving another TMSI identifier from a network management unit; and when the identifier, such as the second TMSI identifier, does not exist in the table of identifiers: sending the identification request to the network management unit; and receiving another second TMSI identifier, said second TMSI identifier being delivered by the management unit.