Method and apparatus for identifying pseudo base-station, and terminal
First Claim
1. A method for identifying a pseudo base-station, being applicable to a terminal, the method comprising:
- redirecting the terminal to a target cell supporting circuit domain business when a first call request is received in a first serving cell not supporting the circuit domain business;
sending a location area update request to a base-station where the target cell is located, when a plurality of location area identities (LAIs) stored do not comprise a LAI of the target cell, wherein the plurality of LAIs are received from a base-station where the first serving cell is located;
identifying the base-station where the target cell is located as a pseudo base-station, when no message corresponding to the location area update request is received from the base-station where the target cell is located during a first preset time length, and an interval at which the terminal conducts a location area update as indicated by the base-station where the target cell is located is longer than a second preset time length or shorter than a third preset time length, wherein the second preset time length is longer than the third preset time length;
storing frequency point information of the first serving cell and frequency point information of the target cell correspondingly, wherein the frequency point information of the first serving cell and the frequency point information of the target cell stored correspondingly are used to avoid the terminal redirecting to the target cell of which the frequency point information is stored; and
redirecting the terminal to a cell that supporting the circuit domain business other than the target cell of which the frequency point information is stored based on the frequency point information of the first serving cell and the frequency point information of the target cell which are stored correspondingly, when a second call request is received in a second serving cell not supporting the circuit domain business.
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Accused Products
Abstract
Provided are a method and an apparatus for identifying a pseudo base-station, and a terminal and the method includes the follows. A terminal is redirected to a target cell supporting circuit domain business when receiving a first call request in a first serving cell not supporting the circuit domain business. A location area update is sent a request to a base-station where the target cell is located when LAIs stored do not include a LAI of the target cell. The terminal determines that the base-station where the target cell is located as a pseudo base-station when no message responsive to the location area update request is received from the base-station where the target cell is located during the first preset time length and the interval at which the terminal conducts a location area update as indicated by the base-station where the target cell is located meets a preset condition.
7 Citations
20 Claims
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1. A method for identifying a pseudo base-station, being applicable to a terminal, the method comprising:
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redirecting the terminal to a target cell supporting circuit domain business when a first call request is received in a first serving cell not supporting the circuit domain business; sending a location area update request to a base-station where the target cell is located, when a plurality of location area identities (LAIs) stored do not comprise a LAI of the target cell, wherein the plurality of LAIs are received from a base-station where the first serving cell is located; identifying the base-station where the target cell is located as a pseudo base-station, when no message corresponding to the location area update request is received from the base-station where the target cell is located during a first preset time length, and an interval at which the terminal conducts a location area update as indicated by the base-station where the target cell is located is longer than a second preset time length or shorter than a third preset time length, wherein the second preset time length is longer than the third preset time length; storing frequency point information of the first serving cell and frequency point information of the target cell correspondingly, wherein the frequency point information of the first serving cell and the frequency point information of the target cell stored correspondingly are used to avoid the terminal redirecting to the target cell of which the frequency point information is stored; and redirecting the terminal to a cell that supporting the circuit domain business other than the target cell of which the frequency point information is stored based on the frequency point information of the first serving cell and the frequency point information of the target cell which are stored correspondingly, when a second call request is received in a second serving cell not supporting the circuit domain business. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An apparatus for identifying a pseudo base-station, being applicable to a terminal, the apparatus comprising:
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a first redirecting unit, configured to redirect the terminal to a target cell supporting circuit domain business when a first call request is received in a first serving cell not supporting the circuit domain business; a sending unit, configured to send a location area update request to a base-station where the target cell is located, when a plurality of location area identities (LAIs) stored do not comprise a LAI of the target cell, wherein the plurality of LAIs are received from a base-station where the first serving cell is located; an identifying unit, configured to identify the base-station where the target cell is located as a pseudo base-station, when no message corresponding to the location area update request is received from the base-station where the target cell is located during a first preset time length, and an interval at which the terminal conducts a location area update as indicated by the base-station where the target cell is located is longer than a second preset time length or shorter than a third preset time length, wherein the second preset time length is longer than the third preset time length; a storing unit, configured to store frequency point information of the first serving cell and frequency point information of the target cell correspondingly, wherein the frequency point information of the first serving cell and the frequency point information of the target cell stored correspondingly are used to avoid the terminal redirecting to the target cell of which the frequency point information is stored; and a second redirecting unit, configured to redirect the terminal to a cell supporting the circuit domain business other than the target cell of which the frequency point information is stored based on the frequency point information of the first serving cell and the frequency point information of the target cell which are stored correspondingly, when a second call request is received in a second serving cell not supporting the circuit domain business. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A terminal, comprising:
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at least one processor; and a memory storing program codes, the program codes being configured to program the at least one processor to; redirect the terminal to a target cell supporting circuit domain business when a first call request is received in a first serving cell not supporting the circuit domain business; send a location area update request to a base-station where the target cell is located, when a plurality of location area identities (LAIs) stored do not comprise a LAI of the target cell, wherein the plurality of LAIs are received from a base-station where the first serving cell is located; identify the base-station where the target cell is located as a pseudo base-station, when no message corresponding to the location area update request is received from the base-station where the target cell is located during a first preset time length, and an interval at which the terminal conducts a location area update as indicated by the base-station where the target cell is located meets a preset condition; store frequency point information of the first serving cell and frequency point information of the target cell correspondingly, wherein the frequency point information of the first serving cell and the frequency point information of the target cell stored correspondingly are used to avoid the terminal redirecting to the target cell of which the frequency point information is stored; and redirect the terminal to a cell supporting the circuit domain business other than the target cell of which the frequency point information is stored based on the frequency point information of the first serving cell and the frequency point information of the target cell which are stored correspondingly, when a second call request is received in a second serving cell not supporting the circuit domain business. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification