Abstract:
The present invention relates to a wireless access system supporting a full duplex radio (FDR) transmission environment. The method for a terminal to receive a signal in a wireless access system supporting an FDR, according to an embodiment of the present invention, comprises the steps of: measuring the inter-terminal interference between the terminal and candidate terminals; establishing a group of the terminal and a candidate terminal that has been selected due to the measured inter-terminal interference value; transmitting group information of the group to a base station; and receiving a signal by using resources allocated on the basis of the group information.
Abstract:
A method for transmitting information related to a sounding reference signal (SRS) transmission by a base station (BS) of a full duplex radio (FDR) mode in a wireless communication system includes: transmitting information related to a resource region to be used for the SRS transmission to a user equipment of the FDR mode within a resource region configured as an uplink (UL) idle interval; receiving a SRS through the resource region for the SRS transmission from the user equipment; performing an uplink (UL) channel estimation based on the received SRS; and performing a downlink (DL) channel estimation by applying a channel reciprocity characteristic to a result of the uplink (UL) channel estimation.
Abstract:
A data decoding method using an error correction method based on a log-likelihood ratio (LLR) is disclosed. The method includes decoding a transport block based on a first error correction code, calculating a log-likelihood ratio (LLR) for each symbol of the decoded data, when the CRC of the decoded data fails, transmitting information of a symbol determined as error based on the LLR and the decoded transport block to a higher layer, and decoding the information of the symbol determined as error and the transport block based on a second error correction code, in a higher layer.
Abstract:
A method for performing communication by a user equipment (UE) in a UE-flexible Time Division Duplex (TDD) mode in a network configured to support the UE-flexible TDD mode in which a base station (BS) operates in a full duplex mode and the UE operates in a half duplex mode includes receiving information associated with a UE-flexible TDD mode support cell configured to support the UE-flexible TDD mode through a primary cell (PCell) from the base station (BS); and receiving a physical downlink shared channel (PDSCH) from the base station (BS) through the UE-flexible TDD mode support cell based on the information.
Abstract:
The present invention relates to a wireless communication system. In detail, the present invention is a method for transmitting data to a base station (BS) by a user equipment (UE) includes: receiving information on a contention-based Physical Uplink Shared Channel (PUSCH) zone including a plurality of contention-based PUSCH resource blocks from the base station (BS); allocating at least one contention-based PUSCH resource block for transmission of the data based on the information on contention-based PUSCH zone; and transmitting the data to the base station (BS).
Abstract:
The present invention relates to a wireless access system supporting a full duplex radio (FDR) transmission environment. A method for a base station for allocating resources in a wireless access system supporting FDR according to an embodiment of the present invention comprises the steps of: receiving, from a terminal, information regarding whether or not the terminal is participating in a grouping in which a plurality of terminals are configured as a group for resource allocation; and determining whether or not to group and allocating resources on the basis of the information regarding whether or not participating, wherein the information regarding whether or not participating may comprise a first item of information indicating whether the terminal can operate in full duplex (FD) in the same resource, a second item of information indicating (FD) in the same resource, a second item of information indicating FD operation is not possible in the same resource but whether an FD operation of another apparatus is supported, and a third item of information indicating whether a participation in the grouping is requested.
Abstract:
A method for performing a Full-Duplex Radio (FDR) operation in a wireless communication system that supports the FDR is disclosed. The method includes exchanging FDR capability information that represents whether to have a capability of performing the FDR operation between a user equipment (UE) and a base station (BS); receiving, by the UE, Inter-Device-Interference (IDI) measurement configuration information from the BS; performing, by the UE, an IDI measurement based on the received IDI measurement configuration information; reporting, by the UE, a result of the IDI measurement to the BS; and receiving, by the UE, a control message notifying that the UE is included in a group related to the FDR operation from the BS, where the FDR capability information includes indication information that represents whether to support an FDR mode that transmission and reception operations are available to be performed simultaneously using an identical radio resource.
Abstract:
A method of transmitting a power control factor by a device performing self-interference cancellation (SIC) in a wireless communication system using full-duplex radio (FDR) according to the present invention includes: transmitting, to a user equipment (UE), a first indicator indicating a power control for purpose of reducing an order to be considered as nonlinear components of a self-interference signal; and receiving, from the UE, a second indicator indicating whether the power control for the purpose of reducing the order to be considered as the nonlinear components of the self-interference signal is accepted or not in response to the first indicator.
Abstract:
A method for receiving downlink data by the terminal in a wireless communication system, includes receiving, from a base station, downlink control information for scheduling a short physical downlink shared channel (sPDSCH) on a short physical downlink control channel (sPDCCH), and receiving, from the base station, downlink data on the sPDSCH based on the downlink control information. Here, the sPDCCH and the sPDSCH are based on a first transmission time interval (TTI)-based radio frame structure, wherein the first TTI-based radio frame structure is shorter in time than a second TTI-based radio frame structure related to (i) a physical downlink shared channel (PDSCH) and (ii) a physical downlink control channel (PDCCH). Further, a number of resource element groups (REGs) consisting of a control channel element (CCE) related to the sPDCCH is smaller than a number of resource element groups (REGs) composed of a CCE related to the PDCCH.
Abstract:
An improved layered decoding method for a low density parity check (LDPC) code and a device therefor are disclosed. Disclosed is the layered decoding method for an LDPC code, capable of determining whether decoding is successful by performing a syndrome check on each check node at every variable node update. In addition, the syndrome check can be performed by using reduced variable nodes, thereby reducing decoding power consumption and decoding time consumption.