METHOD AND APPARATUS FOR RECEIVING CONTROL INFORMATION IN WIRELESS CONNECTION SYSTEM
First Claim
1. A method of receiving control information received by a user equipment in a heterogeneous network system including a macro cell and a femto cell, the method comprising:
- receiving a first PHICH (physical hybrid-ARQ indicator channel) configuration information on the femto cell from the macro cell;
performing a handover from the macro cell into the femto cell;
configuring a PHICH interval as a first number of OFDM (orthogonal frequency division multiplexing) symbols in accordance with the first PHICH configuration information;
receiving a second PHICH configuration information from the femto cell through a downlink shared channel (DL-SCH); and
reconfiguring the PHICH interval as a second number of the OFDM symbols in accordance with the second PHICH configuration information.
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Accused Products
Abstract
The present invention discloses a method and an apparatus for a terminal receiving control information, which includes a modified physical hybrid ARQ indicator channel (PHICH) configuration, through a downlink shared channel (DL-SCH), in a heterogeneous network system comprising a macro cell and a femto cell. The method for the terminal receiving the control information in the heterogeneous network system comprising the macro cell and the femto cell, according to one embodiment of the present invention, comprises the steps of: the terminal accessing the macro cell undergoing a handover to the femto cell; and receiving PHICH reconfiguration information from the femto cell through the downlink shared channel (DL-SCH), when the configuration of the physical hybrid ARQ indicator channel (PHICH) used by the terminal which has undergone the handover is modified.
6 Citations
15 Claims
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1. A method of receiving control information received by a user equipment in a heterogeneous network system including a macro cell and a femto cell, the method comprising:
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receiving a first PHICH (physical hybrid-ARQ indicator channel) configuration information on the femto cell from the macro cell; performing a handover from the macro cell into the femto cell; configuring a PHICH interval as a first number of OFDM (orthogonal frequency division multiplexing) symbols in accordance with the first PHICH configuration information; receiving a second PHICH configuration information from the femto cell through a downlink shared channel (DL-SCH); and reconfiguring the PHICH interval as a second number of the OFDM symbols in accordance with the second PHICH configuration information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of transmitting control information transmitted by a femto cell in a heterogeneous network system including a macro cell and the femto cell, the method comprising:
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receiving downlink channel information including a downlink channel signal measurement value from a user equipment handed over from the macro cell; transmitting PHICH (physical hybrid-ARQ indicator channel) configuration information to the user equipment through a downlink shared channel (DL-SCH) when the downlink channel signal measurement value is equal to or smaller than a reference value. - View Dependent Claims (10, 11, 12, 13)
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14. The user equipment of receiving control information in a heterogeneous network system including a macro cell and a femto cell, the user equipment comprising:
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an RF (radio frequency) unit; and a processor configured to; receive a first PHICH (physical hybrid-ARQ indicator channel) configuration information on the femto cell from the macro cell, perform a handover from the macro cell into the femto cell, configure a PHICH interval as a first number of OFDM (orthogonal frequency division multiplexing) symbols in accordance with the first PHICH configuration information after the handover, receive a second PHICH configuration information from the femto cell through a downlink shared channel (DL-SCH), reconfigure the PHICH interval as a second number of the OFDM symbols in accordance with the second PHICH configuration information.
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15. A femto cell transmitting control information in a heterogeneous network system including a macro cell and the femto cell, the femto cell comprising:
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an RF (radio frequency) unit; and a processor configured to; receive downlink channel information including a downlink channel signal measurement value from a user equipment handed over from the macro cell, configured to transmit PHICH (physical hybrid-ARQ indicator channel) configuration information to the user equipment through a downlink shared channel (DL-SCH) when the downlink channel signal measurement value is equal to or smaller than a reference value.
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Specification