Apparatus and method for automatically searching for low-power base station supporting access of registered user in mobile communication system
First Claim
1. A method of performing automatic search on a Closed Subscriber Group (CSG) cell by a User Equipment (UE), the method comprising:
- determining by the UE whether automatic search needs to be performed on the CSG cell; and
if it is determined that automatic search does not need to be performed on the CSG cell, turning off by the UE a CSG cell automatic search function of the UE by emptying a first white list including CSG IDentifiers (IDs) of accessible CSG cells.
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Abstract
An apparatus and method for automatically searching for a low-power Base Station (BS) supporting access of a registered user in a mobile communication system includes a method of performing automatic search on a Closed Subscriber Group (CSG) cell by a User Equipment (UE). The method includes determining by the UE whether automatic search needs to be performed on the CSG cell. The method also includes, if it is determined that automatic search does not need to be performed on the CSG cell, turning off by the UE a CSG cell automatic search function of the UE by emptying a first white list including CSG Identifiers of accessible CSG cells.
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Citations
20 Claims
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1. A method of performing automatic search on a Closed Subscriber Group (CSG) cell by a User Equipment (UE), the method comprising:
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determining by the UE whether automatic search needs to be performed on the CSG cell; and if it is determined that automatic search does not need to be performed on the CSG cell, turning off by the UE a CSG cell automatic search function of the UE by emptying a first white list including CSG IDentifiers (IDs) of accessible CSG cells. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An apparatus for performing automatic search on a Closed Subscriber Group (CSG) cell by a User Equipment (UE), the apparatus comprising:
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a CSG automatic search unit for determining whether automatic search needs to be performed on the CSG cell, and for turning off an CSG cell automatic search function of the UE by emptying a first white list if it is determined that automatic search does not need to be performed on the CSG cell; and the first white list including CSG IDentifiers (IDs) of accessible CSG cells of the UE. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A method of updating a white list of a User Equipment (UE) by a network, the method comprising:
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obtaining by the network at least one information selected from a Closed Subscriber Group (CSG) IDentifier (ID) of a newly installed CSG Base Station (BS) and a UE ID of a UE registered to the newly installed CSG BS; if the UE enters into the coverage of a macro BS, obtaining by the network at least one information selected from a UE ID of the entering UE and a CSG ID identifying an accessible CSG BS and included in the white list managed by the entering UE; determining by the network whether a CSG BS accessible by the entering UE exists near the macro BS on the basis of the obtained information; and transmitting by the network a white list update command to the entering UE according to the determination result. - View Dependent Claims (14, 15)
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16. A system comprising:
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a network for transmitting a white list update command to a User Equipment (UE), wherein the network obtains at east one information selected from a Closed Subscriber Group (CSG) Identifier (ID) of a newly installed CSG Base Station (BS) and a UE ID of a UE registered to the newly installed CSG BS, wherein, if the UE enters into the coverage of a macro BS, the network obtains at least one information selected from a UE ID of the entering UE and a CSG ID identifying an accessible CSG BS and included in a white list managed by the entering UE, wherein the network determines whether a CSG BS accessible by the entering UE exists near the macro BS on the basis of the obtained information, and wherein the network transmits a white list update command to the entering UE according to the determining result; and the UE for updating the white list according to the white list update command received from the network. - View Dependent Claims (17, 18, 19, 20)
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Specification