FEMTO CELL SYSTEM AND METHOD OF ACHIEVING MOBILITY WITH MACRO/MICRO CELL IN FEMTO CELL SYSTEM
First Claim
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1. A method of achieving mobility with a macro/micro cell in a femto cell system, said method comprising:
- a node that manages a plurality of femto cells, identifying femto cells that use an identical scrambling code; and
said node transferring a relocation request from a macro/micro network of a moving source of a mobile station to a plurality of femto cells and obtaining information from a femto cell of a correct moving destination of said mobile station to achieve inter-network mobility of said mobile station.
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Abstract
A node that manages a plurality of femto cells identifies the femto cells that use an identical scrambling code, transfers a relocation request from the macro/micro network of a moving source to the femto cells and obtains information from a correct moving destination to achieve inter-network mobility of the mobile station.
19 Citations
10 Claims
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1. A method of achieving mobility with a macro/micro cell in a femto cell system, said method comprising:
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a node that manages a plurality of femto cells, identifying femto cells that use an identical scrambling code; and said node transferring a relocation request from a macro/micro network of a moving source of a mobile station to a plurality of femto cells and obtaining information from a femto cell of a correct moving destination of said mobile station to achieve inter-network mobility of said mobile station. - View Dependent Claims (2, 3, 4, 5)
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6. A femto cell system comprising:
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a plurality of femto cells; and a node that manages said plurality of femto cells, wherein said node identifies femto cells that use an identical scrambling code, and said node transfers a relocation request from a macro/micro network of a moving source of a mobile station to said plurality of femto cells, and obtains information from a femto cell of a correct moving destination of said mobile station to achieve inter-network mobility of said a mobile station. - View Dependent Claims (7, 8, 9)
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10. A gateway apparatus that manages a plurality of femto base stations, comprising:
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a management table including a scrambling code that the femto base station uses for each of said plurality of femto base stations; and a unit that receives, via a higher-level core network, a relocation request from a base station control apparatus in a macro/micro network of a moving source of a mobile station, searches said management table to identify femto cells that use an identical scrambling code; and transfers said relocation request from said macro/micro network of said moving source to said femto base stations that use said identical scrambling code, and notifies an acknowledgement of said relocation request to said base station control apparatus via said higher-level core network, upon receipt of a relocation request acknowledge message from said femto base stations to achieve mobility of said mobile station between said macro/micro network and a femto network.
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Specification