Abstract:
A method for transmitting uplink (UL) data in a wireless communication system, the method performed by a UE according to the present invention comprises receiving physical uplink control channel (PUCCH) resources for transmission of a BSR message from a base station; transmitting a BSR message to the base station through the allocated PUCCH resources; receiving an UL grant for UL data transmission from the base station; and transmitting UL data to the base station through the received UL grant, where control information related to a structure of the PUCCH resources is received through allocation of the PUCCH resources.
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 systems supporting FDR according to an embodiment of the present invention comprises the steps of: selecting candidate terminals to be configured into a group from among a plurality of terminals; transmitting group configuration information to the candidate terminals; receiving, from the candidate terminals, interference information for interference between the terminals; configuring a plurality of terminals into one or more groups on the basis of the interference information; and allocating resources to the plurality of terminals on the basis of the groups.
Abstract:
The present invention relates to a wireless communication system. In detail, the present invention is a method for transmitting a scheduling request (SR) by a user equipment (UE) in a wireless communication system includes: receiving information on a resource for the scheduling request (SR) from a base station (BS); transmitting the scheduling request (SR) using the scheduling request (SR) resource transmitted over a control channel; and transmitting a first buffer status report (BSR) using uplink (UL) contention-based resources transmitted over a data channel. The UL contention-based resources are determined based on at least one of the resource for the scheduling request (SR) or an identifier (ID) of the UE.
Abstract:
A method for decoding an LDPC code for a forward error correction by a reception terminal of a wireless communication system according to an embodiment o the present invention comprises, in a bipartite graph including nodes that are differentiated into received nodes to which received packets are mapped and restoration nodes connected via edges to the received nodes, he steps of: obtaining first restoration packets corresponding to the restoration nodes using edges on a first packet passing path; determining error packet candidates to be excluded from the received packets when an error is detected in the first restoration packets; and obtaining second restoration packets from the bipartite graph from which the determined error packet candidates are excluded, wherein the step of obtaining the second restoration packets obtains the second restoration packets through the edges of a second packet passing path except for the edges of the received nodes to which the error packet candidates are mapped.
Abstract:
The present invention relates to a wireless access system supporting a full duplex radio (FDR) transmission environment. A resource allocation method of a base station in a wireless access system that supports a FDR, according to one embodiment of the present invention, comprises the steps of: transmitting a first frame setting for a configuration of an uplink subframe and a downlink subframe to a terminal which is set by a terminal-specific TDD; receiving, from the terminal, response information including traffic information of the terminal and/or frame setting information preferred by the terminal; and transmitting a second frame setting which has adjusted the ratios of the uplink subframe and the downlink subframe on the basis of the response information, wherein the second frame setting is capable of being set by shifting the first frame setting on the basis of the number of FDR interference terminals which simultaneously transmit an uplink.
Abstract:
The present invention relates to a method for performing a cooperative operation between heterogeneous networks and a device for same. A method for a first type base station to perform a cooperative operation between heterogeneous networks in a wireless communication system includes receiving a downlink synchronization channel from at least one second type base station; obtaining an identifier (ID) of the second type base station by using the received downlink synchronization channel; and transmitting at least one of a channel number and a bandwidth of a center frequency of the first type base station and the cell ID of the second type base station to a server. The first type base station and the second type base station use different wireless communication methods or wireless access methods.
Abstract:
A method for scanning for a base station (BS) of a second radio access technology (RAT) by a user equipment (UE) connected to a first RAT in a multi-RAT environment includes receiving information about one or more BSs of the second RAT adjacent to the UE, from an interworking entity (IWE) of the first RAT which manages interworking between the first RAT and the second RAT, and transmitting an awake request message to a specific BS among the BSs of the second RAT in a listening interval of the specific BS to which the UE desires to access, if a status of the specific BS is an idle mode, wherein listening interval information is included in the received information about the BSs of the second RAT.
Abstract:
Disclosed are: a terminal for selecting RRUs of which a connection state with the terminal is a critical value or more from among a plurality of RRUs on the basis of down signals received from the RRUs, transmitting an RRU list including information on the selected RRUs and a random access preamble to an RRU having the best connection state with the terminal among the selected RRUs, receiving an access information response message indicating a preferred RRU with which a random access is to be performed by the terminal from any one RRU among the selected RRUs and performing a random access process with the preferred RRU; and a method for performing random access by the terminal.
Abstract:
An apparatus for cancelling a self-interference signal between a transmission antenna and a reception antenna is disclosed. The apparatus includes a first self-interference signal cancellation unit for cancelling a self-interference signal in consideration of a linear channel between the transmission antenna and the reception antenna, a second self-interference signal cancellation unit for cancelling a self-interference signal in consideration of nonlinear channel characteristic between the transmission antenna and the reception antenna or linear characteristic of a radio channel, and a controller for comparing a transmitted signal output from the transmission antenna and a received signal received by the reception antenna to provide a first coefficient to be applied to self-interference signal cancellation of a linear device in the first self-interference signal cancellation unit and a second coefficient to be applied to self-interference signal cancellation of a nonlinear device in the second self-interference signal cancellation unit.
Abstract:
Provided are an apparatus and a method for allocating resources in a wireless communication system. In particular, the present invention includes the feature of alternately allocating resources for D2D communication and resources for cellular communication, or allocating resources of a D2D link to not be adjacent to each other. In addition, the present invention prevents interference with the cellular communication and interference with other D2D links by allocating a partial area of the resources allocated for the D2D communication to an area for transmitting a D2D uplink symbol to an eNB, or by adding a GP symbol to a partial area of the resources for the D2D communication. Furthermore, in the case of applying a TDD scheme, the present invention prevents interference with symbols for performing the cellular communication by defining a partial section of a special subframe as a section for transmitting the D2D uplink symbol, or by reflecting a time delay of N OFDM symbol durations. Accordingly, the present invention prevents the D2D communication from causing interference.