Method and device for identifying pseudo-base station by a mobile terminal
AssigneeSamsung Electronics Co., Ltd.
InventorsShu Han, Xiaofei Li, Xinhe Peng
Life of this patent
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Abstract
A method and an apparatus for identifying a pseudo-base station in a mobile terminal. The method for identifying the pseudo-base station in the mobile terminal may include sending a LAU (Location Area Update) Request to a base station of a current cell; receiving a LAU Accept response from the base station indicating that LAU has been performed; and identifying the authenticity of the base station based on whether or not TMSI (Temporary Mobile Subscriber Identity) information is included in the LAU Accept response.
Claims20
A method for identifying a pseudo-base station by a mobile terminal, comprising;
- sending a Location Area Update (LAU) Request to a base station of a current cell;
- receiving an LAU Accept response from the base station indicating that LAU has been performed;
- and
- identifying an authenticity of the base station based on whether or not a Temporary Mobile Subscriber Identity (TMSI) information is included in the LAU Accept response.
A device for identifying a pseudo-base station by a mobile terminal, comprising;
- a Location Area Update (LAU) processor configured to send an LAU Request to a base station of a current cell, and to receive a LAU Accept response from the base station indicating that LAU has been performed;
- and
- a pseudo-base station identifier circuit configured to identify an authenticity of the base station based on whether or not a Temporary Mobile Subscriber Identity (TMSI) information is included in the LAU Accept response.
A method for identifying a pseudo-base station by a mobile terminal, comprising;
- reselecting, by the mobile terminal, an adjacent cell as a serving cell in response to determining a channel quality parameter of the adjacent cell is greater than a current cell;
- comparing a Location Area Information (LAI) of the adjacent cell and the current cell, and initiating a Location Area Update (LAU) request to a base station when the LAI of the adjacent cell and the current cell are different;
- identifying the base station as being a pseudo-base station in response to determining receipt of an LAU Accept response from the base station and detecting a Service Access Point Identifier (SAPI) downlink is established over a current channel by the base station with a Short Message Service (SMS) message being received from the base station via the downlink;
- and
- updating storage to identify the base station as the pseudo-base station and reselecting a previous serving cell.
Dependencies are inferred from the claim text.