DEVICE AND METHOD FOR TRANSMITTING CONTROL INFORMATION FOR INTER-HETEROGENEOUS CELL INTERFERENCE ADJUSTMENT IN A WIRELESS COMMUNICATION SYSTEM
First Claim
1. A base station transmitting control information for coordinating inter-heterogeneous cell interference, the base station comprising:
- a signal receiving unit that receives an ABS (almost blank sub-frame) pattern configured to have transmission power controlled in a sub-frame determined considering interference with a heterogeneous eNB from an operation and management device that operates and manages the heterogeneous eNB;
a system information generating unit that determines a first sub-frame where a PDCCH (physical downlink control channel) is transmitted and a second sub-frame where a PDSCH (physical downlink shared channel) scheduled by the PDCCH is transmitted based on the ABS pattern and generates separation information to indicate a separated distance between the first sub-frame and the second sub-frame;
a downlink control information generating unit that generates downlink control information including a scheduling offset indicating the separated distance; and
a signal transmitting unit that transmits the downlink control information through the PDCCH in the first sub-frame and transmits a paging message or system information through the PDSCH in the second sub-frame.
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Accused Products
Abstract
The present invention relates to a device and method for transmitting control information for inter-heterogeneous cell interference adjustment in a wireless communication system. The present invention relates to a base station including: a signal receiving unit for receiving an ABS pattern; a system information generating unit for generating separation information that notifies the separated distance from a first sub frame transmitting PDCCH on the basis of the ABS pattern to a second sub frame transmitting PDSCH scheduled by the PDCCH; a downlink control information generating unit for generating downlink control information including a scheduling offset which indicates the separated distance; and a signal transmitting unit for transmitting the downlink control information from the first sub frame and transmitting a paging message or system information from the second sub frame.
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Citations
22 Claims
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1. A base station transmitting control information for coordinating inter-heterogeneous cell interference, the base station comprising:
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a signal receiving unit that receives an ABS (almost blank sub-frame) pattern configured to have transmission power controlled in a sub-frame determined considering interference with a heterogeneous eNB from an operation and management device that operates and manages the heterogeneous eNB; a system information generating unit that determines a first sub-frame where a PDCCH (physical downlink control channel) is transmitted and a second sub-frame where a PDSCH (physical downlink shared channel) scheduled by the PDCCH is transmitted based on the ABS pattern and generates separation information to indicate a separated distance between the first sub-frame and the second sub-frame; a downlink control information generating unit that generates downlink control information including a scheduling offset indicating the separated distance; and a signal transmitting unit that transmits the downlink control information through the PDCCH in the first sub-frame and transmits a paging message or system information through the PDSCH in the second sub-frame. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of transmitting control information for coordinating inter-heterogeneous cell interference by a base station, the method comprising:
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receiving an ABS pattern configured to have transmission power controlled in a sub-frame determined considering interference with a heterogeneous eNB from an operation and management device that operates and manages the heterogeneous eNB; determining a first sub-frame where a PDCCH is transmitted and a second sub-frame where a PDSCH scheduled by the PDCCH is transmitted based on the ABS pattern; generating separation information to indicate a separated distance between the first sub-frame and the second sub-frame; generating downlink control information including a scheduling offset indicating the separated distance; transmitting the downlink control information through the PDCCH in the first sub-frame; and transmitting a paging message or system information through the PDSCH in the second sub-frame. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A user equipment receiving control information for coordinating inter-heterogeneous cell interference, the user equipment comprising:
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a physical channel receiving unit that receives a PDCCH in a first sub-frame, receives a PDSCH indicated by the PDCCH in a second sub-frame, and receives separation information indicating a distance between the first sub-frame and the second sub-frame from a base station through a PBCH; and a system updating unit that updates system information of the user equipment based on the separation information, wherein one of the first sub-frame and the second sub-frame is set as an ABS configured to have transmission power controlled in a sub-frame determined considering interference with a heterogeneous eNB, and the other is set as a non-ABS. - View Dependent Claims (14, 15, 16, 17)
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18. A method of receiving control information for coordinating inter-heterogeneous cell interference by a user equipment, the method comprising:
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receiving a PDCCH in a first sub-frame; receiving a PDSCH indicated by the PDCCH in a second sub-frame; receiving separation information indicating a distance between the first sub-frame and the second sub-frame through a PBCH from a base station; and updating system information of the user equipment based on the separation information, wherein one of the first sub-frame and the second sub-frame is set as an ABS configured to have transmission power controlled in a sub-frame determined considering interference with a heterogeneous eNB and the other is set as a non-ABS. - View Dependent Claims (19, 20, 21, 22)
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Specification