Method and apparatus for handover, and method of determining delay parameter in wireless communication system
First Claim
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1. A method in which a user terminal that is connected to a macrocell performs handover to a small scale cell within a macrocell area, the method comprising:
- determining whether a handover criterion is satisfied for a time period of a delay parameter of the small scale cell when the user terminal enters the small scale cell; and
determining handover to the small scale cell when the handover criterion is continuously satisfied for the time period of the delay parameter.
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Abstract
When a handover apparatus of a user terminal enters a small scale cell within a macrocell area in a state that it is connected to a macrocell, the handover apparatus acquires a delay parameter of the small scale cell and delays handover for a time period of the delay parameter of the small scale cell and determines handover to the small scale cell. Thereby, handover to the small scale cell for a temporal user of the small scale cell can be reduced.
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Citations
20 Claims
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1. A method in which a user terminal that is connected to a macrocell performs handover to a small scale cell within a macrocell area, the method comprising:
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determining whether a handover criterion is satisfied for a time period of a delay parameter of the small scale cell when the user terminal enters the small scale cell; and determining handover to the small scale cell when the handover criterion is continuously satisfied for the time period of the delay parameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus for determining handover of a user terminal to a small scale cell within a macrocell area in a macrocell, the apparatus comprising:
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a handover determining unit that acquires a delay parameter of the small scale cell and delays handover for the time period of the delay parameter of the small scale cell and then determines the handover when the user terminal enters the small scale cell; and a handover performing unit that starts handover with the user terminal and the small scale cell when the handover is determined. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A method of determining a delay parameter in a network management entity that manages a small scale cell within a macrocell area, the method comprising:
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calculating staying time measurement data of user terminals within a small scale cell area; calculating a delay parameter by applying numerical estimation to the staying time measurement data; and transmitting the delay parameter to a user terminal that enters the small scale cell in a state in which it is connected to the macrocell, wherein handover to the small scale cell is delayed by the user terminal for a time period of the delay parameter. - View Dependent Claims (19, 20)
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Specification