Lg Electronics Inc.

Sungkyunkwan University

Ohsoon Shin

Hakseong Kim

Yoan Shin

Mochan Yang

Sungcheol Yoo

Shanai Wu

Erang Lim

Kijun Kim

Provided is a method and an apparatus for controlling inter-cellular interference in a heterogeneous network (HetNet) system, in which a macro cell and femto cells coexist. The apparatus for controlling inter-cellular interference overbears a control channel of the macro cell. The control apparatus determines an interference candidate resource, which is subject to inter-cell interference control, on the basis of the control channel. The control apparatus transmits an interference control message including information on the interference candidate resource.

Method and apparatus for controlling inter-cellular interference in HetNet system

Provided is a method for controlling interference between cellular communication and device-to-device (D2D) communication. An interference control apparatus overhears a downlink control channel which is transmitted from a cellular base station to a cellular terminal. The control apparatus determines an interference candidate resource, which is subject to inter-cell interference control, on the basis of the downlink control channel. A step of the control apparatus transmitting an interference control message to a D2D terminal using the interference candidate resource is included.

Method and apparatus for controlling interference between cellular communication and D2D communication

According to the present invention, a method for a relay node (RN) to reallocate a resource in order to avoid inter-cell interference (ICI) in a wireless access system includes: overhearing a control channel including downlink or uplink resource allocation information transmitted by a plurality of base stations to terminals in the coverage area of each base station; sharing the RN by means of the plurality of base stations; confirming that there is a resource area in which conflicts are occurring by comparing resource areas allocated to terminals in the coverage area of the RN through the control channel; and, if it is determined, on the basis of the confirmation result, that there is a resource area in which conflicts are occurring, reallocating a resource to the resource area in which conflicts are occurring.

Method and device for avoiding inter-cell interference in a wireless access system

A method for a relay node (RN) to avoid inter-cell interference (ICI) in a wireless access system is provided. The method includes: overhearing a PDCCH transmitted by a plurality of BSs sharing the RN to terminals of each BS in the nth subframe; decoding the PDCCH from the n+1th subframe to the n+2th subframe; reallocating resource area to the terminals; transmitting control information representing the reallocated resource area to each BS; overhearing and decoding a PUSCH to each BS in the n+4th subframe; transmitting the decoding result to each BS; overhearing a PDCCH updated at n+8th subframe; and retransmitting the PUSCH transmitted at the n+4th subframe to a BS(NACK) in the n+12th sub frame.

Method for avoiding inter-cell interference in a wireless access system

According to the disclosure of the present invention, provided is a method for operating a relay node (RN) to avoid an inter-cell interference (ICI) in a wireless access system. The method includes: overhearing the downlink signal transmitted by a plurality of base stations to terminals within the coverage area of each base station in an nsubframe; decoding the overheard downlink signal from an n+1subframe to an n+3subframe and sharing the RN through the plurality of base stations; overhearing the reply to the downlink signal transmitted by the terminals to each base station in an n+4subframe; reallocating a resource block allocated to the terminals in the nsubframe if there is at least one negative reply NACK in the replies to the downlink signal transmitted by the terminals; and transmitting control information representing the reallocated resource block to each base station.

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Seoul, South Korea

Ohsoon Shin