| 摘要 |
A mobile equipment (104) entering into the coverage area of a presence cell, determines that the detected cell is a presence cell and subsequently initiates an Radio Resource Control Connection towards the presence cell using an appropriate cause code signifying a presence update and also including an authentication code calculated by making use of an integrity key previously used when last connected to the core network„ an identity broadcast by the presence cell; and an identity assigned to the mobile equipment in the last cell that provided it with a core network connection. A controller (115) receives this information from the mobile equipment and compares it with similar information received from the last cell that provided a service to the mobile equipment. If there is a match, then a presence notification message is generated including the identity of the mobile equipment and of the presence cell. |
