Lg Electronics Inc.

Korea Advanced Institute of Science and Technology

Sungkyunkwan University

Osong Medical Innovation Foundation, Korea University Research and Business Foundation

Han-Byul Seo

Byoung-Hoon Kim

Hak-Seong Kim

Ki-Jun Kim

Ki-jun Kim

Soon-Yil Kwon

Youngtae Kim

Wan Gyun Choi

Inkyu Lee

Dan Keun Sung

Seong Hwan Kim

Su Min Kim

Dong-In Kim

Daeyoung Park

Young-Seob Choi

Changick Song

Kyoungjae Lee

Jong-Yeoul Ryu

Su Ha Yoon

The present invention provides a method for avoiding interference resulting from data transmission between an adjacent second base station and a second relay station placed within the coverage of the adjacent second base station. The method for avoiding interference comprises: receiving the radio resource scheduling information from the adjacent second base station; checking the radio resources used in the data transmission between the adjacent second base station and the second relay station based on the received radio resource scheduling information; and scheduling at least one radio resource among uplink radio resources and downlink radio resources for at least one first terminal and at least one first relay station which are connected to a first base station in order to avoid interference with the checked radio resource if the radio resource used in the data transmission from the second base station to the second relay station is checked as the uplink resource or if the radio resource used in the data transmission from the second relay station to the second base station is checked as the downlink resource.

Method for avoiding interference

A method is provided for transmitting a downlink signal by a base station in a wireless communication system. A configuration of orthogonal frequency division multiplexing (OFDM) symbols is transmitted for a first partition of a subframe through higher layer signaling, and a Relay-Physical Downlink Control Channel (R-PDCCH) contained in at least the first partition of the subframe is also transmitted. If the R-PDCCH contains a downlink assignment, the first partition of the subframe is configured not to be used for a transmission of a Physical Downlink Shared Channel (PDSCH) corresponding the R-PDCCH.

Method for allocating backhaul link resources in relay communication system, and method and apparatus for transmitting and receiving data using same

The present invention relates to a method and to an apparatus for transmitting/receiving data in a relay communication system. The method comprises the steps of: setting, as a guard band, the first predetermined number of symbol transmission slots of a data transmission period in a subframe resource element of a downlink channel constituted by a control signal transmission period to which a control signal is allocated and the data transmission period to which downlink data is allocated; allocating reference signals to symbols of the data transmission period; puncturing the symbols corresponding to the guard band from among the symbols to which said reference signals are allocated; and transmitting signals to which said reference signals are allocated.

Method for allocating reference signals of a backhaul link in a relay communication system, and method and apparatus for transmitting/receiving data using the same

The present invention relates to a data transmission/receiving method and apparatus in a relay communication system. In particular, the data transmission/receiving method through a backhaul link between a base station and a relay node in a relay communication system comprises: composing a backhaul subframe including a control signal transmission period to which a control signal is allocated and a backhaul signal transmission period to which a backhaul signal is allocated and then allocating the backhaul signal; transmitting configuration information about the backhaul subframe, the information containing symbol position or size data of the backhaul signal transmission period, to the relay node through an upper layer signal; and transmitting the backhaul signal having been allocated through the backhaul subframe to the relay node.

Signal transmission method and apparatus in a relay communication system

A method and apparatus for transmitting reference signals in a relay communication system are provided. The method transmits reference signals via a type 2 relay node in a relay communication system and includes a base station (BS) allocating a plurality of antenna ports in a mutually exclusive manner so that the antenna port of the BS and the antenna port of a peripheral relay node do not overlap each other, the BS and relay node transmitting reference signals to a user equipment (UE) via the corresponding antenna ports that are mutually exclusively allocated and the BS receiving channel state information from the UE to obtain channel state information between the BS and the UE and channel state information between the relay node and the UE.

Method and apparatus for transmitting a reference signal in a relay communication system

A method and a relay node are described for transmitting and receiving data. The relay node receives a downlink data in a subframe n&#x2212;k from a base station. The subframe n&#x2212;k is configured as a multicast broadcast single frequency network (MBSFN) subframe by the relay node. The relay node transmits to the base station, in response to receiving the downlink data in the subframe n&#x2212;k, an acknowledgement (ACK)/negative acknowledgement (NACK) in an uplink subframe n, where n is an index number of the uplink subframe for transmitting the ACK/NACK. A value of n is associated with a parameter indicating subframe configuration related with at least one hybrid automatic repeat request (HARM) process between the relay node and the base station. The value of k is equal to or greater than 4.

Method for transmitting/receiving data between a relay and a base station

A method and a base station are described for transmitting a downlink signal in a wireless communication system. A configuration of orthogonal frequency division multiplexing (OFDM) symbols for a first partition of a subframe are transmitted through higher layer signaling. A relay-physical downlink control channel (R-PDCCH) contained in at least the first partition of the subframe is transmitted. If the R-PDCCH contains a downlink assignment, the first partition of the subframe is configured to be not used for a transmission for a physical downlink shared channel (PDSCH) corresponding to the R-PDCCH.

The present invention relates to a method and to an apparatus for transmitting reference signals in a relay communication system. The method for transmitting reference signals through a type 2 relay node in a relay communication system comprises: a step in which a base station allocates a plurality of antenna ports in a mutually exclusive manner so that the antenna port of the base station and the antenna port of the peripheral relay node do not overlap each other; a step in which the base station and the relay node transmit reference signals to user equipment through the respective antenna ports mutually exclusively allocated; and a step in which the base station receives a channel state information from the user equipment to obtain channel state information between the base station and the user equipment and channel state information between the relay node and the user equipment.

Disclosed is a method for transmitting integrated packet data by a relay station (RS) in a multi-hop relay communication system, including: integrating a plurality of packet data received from mobile stations (MSs) and determining a data integration scheme for transmitting the integrated data to base station (BS); receiving packet data from MSs, classifying the received packet data into one or more integration packet classes according to the determined data integration scheme, and storing the same; determining QoS (Quality of Service) requirements and a MCS (Modulation and Coding Scheme) level of the stored integration packet classes; calculating required resource according to the determined MCS level and requesting an allocation of the resource from the BS; receiving an approval for resource allocation from the BS, and modulating and coding the integrated packet class, mapping the same to the resource to configure an integrated packet; and transmitting the configured integrated packet to the BS.

Method and apparatus for resource management in a relay communication system, and method and apparatus for data relay using same

A data transmission method and apparatus using a multi-point cooperative transmission for a backhaul link transmission of a relay communication system. A data transmission method of a base station in a radio relay communication system include: obtaining, by a first BS, first radio resource information scheduled by a neighbor BS with respect to a first relay node (RN) located within the coverage of the first BS; when the first BS has data to be transmitted to the first RN, scheduling the data of the first BS on first radio resource allocated by the neighbor BS; and transmitting, by the first BS, the data of the first BS on the first BS, wherein the first RN is located within an overlapping cell coverage between the first BS and the neighbor BS. Thus, backhaul link transmission efficiency between the BS and the RN in the relay communication system can be improved and an inter-cell interference with respect to a backhaul link can be reduced.

Method and apparatus for transmitting data on relay communication system

The present invention relates to a method and an apparatus for transmitting and receiving data in a relay communication system. The method and the apparatus allocate resources by dividing backhaul link resources into plural partitions, and then transmit and receive data. The data transmission method of the invention comprises the steps of: allocating a certain number of initial OFDM symbol transmission periods in a sub-frame of a downlink channel to a control channel that transfers the control information of the terminal, wherein data is transmitted from a base station to a relay or terminal through the downlink channel; dividing the resource blocks excluded from the control channel of the sub-frame into at least two partitions based on frequency domain; determining whether or not each divided partition is allocated to the relay or terminal as resources; and allocating data to the determined partition in order to transmit the partition to the relay or terminal through the downlink channel, wherein the partition determined for the allocation of resources to the relay is allocated to the relay through time division multiplexing (TDM) or frequency division multiplexing of both control and data channels of the relay.

The present invention provides a method for transmitting/receiving data to/from a relay. The data transmitting/receiving method comprises the steps of: enabling the relay to receive data on an nsubframe of a downlink from a base station; determining the position of the subframe of an uplink to which data is to be transmitted, if any data to be transmitted exists, wherein the position of said subframe is determined as the (n+k)subframe, wherein said k is determined by the value of said n and by information on a preset HARQ; and transmitting the data on an (n+k)subframe of the uplink.

A method and device for transmitting or transceiving data in a wireless system. The method includes: transmitting or transceiving a downlink signal by using a special subframe. The special subframe includes a first transmission period and a second transmission period. The first transmission period is set to transmit the downlink signal to the relay node or the terminal. The second transmission period is set to transmit the downlink signal to the relay node and is set to not decode a reference signal by the terminal.

Growing community of inventors

Gyeonggi-do, South Korea

Han-Byul Seo