Abstract:
Disclosed are a method and a base station for mitigating self-interference in which, in a resource region for transmitting a plurality of downlink control channels, an overlap region is configured, the overlap region being a resource region from which the effects of self-interference due to an uplink communication of a terminal must be removed, and the information regarding the overlap region is transmitted to a terminal connected to a base station and communicating via FDR.
Abstract:
The present document is for a wireless communication with reduced internal signaling burden in the distributed antenna system (DAS). In the proposed method, a user equipment (UE) receives signals, from the network, by multiple distributed unit (DUs) distributed within the UE, wherein the multiple DUs comprise one or more main DUs and one or more sub DUs; reports, by the sub DUs, first reception information of the signals to one of the main DUs; reports, by the one of the main DUs, second reception information of the signals to a central unit (CU) controlling the multiple DUs based on the first reception information of the signals; and determines, at the CU, which one or more DUs among the multiple DUs are to transfer the received signals to the CU based on the second reception information of the signals.
Abstract:
Disclosed are a method and a terminal for transmitting data, the method comprising the steps of: determining, during FDR communication with a base station, an overlap region from among a resource region for transmitting an uplink data channel, the overlap region being the resource region for a downlink control channel received from the base station; mitigating the effects of self-interference in the overlap region due to an uplink communication; and transmitting the uplink data channel by means of the overlap region for which the effects of self-interference have been mitigated and the region excluding the overlap region from among the resource region for transmitting the uplink data channel.
Abstract:
In this disclosure, methods for pre-compensation of the phase shifting error, and apparatuses for the same are disclosed. In one example, a device performs precoding of a digital signal, while acquiring information on an error caused by a phase shifting of the precoding. Then, the device performs phase compensation on the digital signal based on the acquired information. Here, the phase compensation may compensate different amount of phase based on an amount of the phase shifting of the precoding. This phase compensated-digital signal is converted to an analogue signal, and is transmitted to a receiver.
Abstract:
In this disclosure, methods and apparatus for managing interference are disclosed. In one example, the first station receives the first signal from the base station. The first station acquires information on a specific processing scheme of a second station for processing the first signal to be transmitted to a third station at the second station. The first station receives a second signal from the base station while the second station transmits the first signal to the third station. Here, since the first station has knowledge on the first signal and the information on the specific processing scheme, it can manage interference caused by the first signal from the second station.
Abstract:
The present invention relates to a wireless communication system. A base station for transmitting a signal in a wireless communication system supporting multi user-multiple input and multiple output (MU-MIMO), according to another embodiment of the present invention, comprises: a radio frequency unit (RF); and a processor, wherein the processor can be configured to generate beams for subgroups including a plurality of terminals using analog beamforming, compensate beam phase difference which occurs between beams of subgroups using digital beamforming, after analog beamforming, and transmit, to the terminals, signals generated based on analog beamforming and digital beamforming.
Abstract:
A method for transmitting a reference signal to a user equipment at a base station in a wireless communication system is disclosed. The method includes transmitting a control channel and the reference signal having a first pattern for the control channel to the user equipment and transmitting a data channel and the reference signal having a second pattern for the data channel to the user equipment, wherein reference signal density of the second pattern is determined based on a coherence time of the data channel, and the first pattern includes the second pattern.
Abstract:
The present invention provides a method for detecting an uplink synchronization signal in a wireless access system supporting a high-frequency band, a method for designing a detection filter for the same and an apparatus for supporting the same. According to one embodiment of the present invention, a method for detecting a random access channel signal by a base station in a wireless access system supporting the high-frequency band comprises: allocating a cyclic shift value used in the base station; configuring a received signal vector for a signal transmitted via a random access channel; detecting at least one RACH signal from the received signal vector, using a frequency domain detecting filter; and identifying at least one terminal having transmitted at least one RACH signal, using a target terminal detecting filter, wherein the filter for detecting a target terminal may be set on the basis of the cyclic shift value.
Abstract:
A method for transmitting a reference signal by a base station to a user equipment in a wireless communication system is disclosed. The method includes transmitting the reference signal to the user equipment according to a first pattern corresponding to a first speed section, and if movement speed of the user equipment is changed to a second speed section from the first speed section, transmitting the reference signal to the user equipment according to a second pattern corresponding to the second speed section, wherein, if the second speed section is a higher-speed section than the first speed section, the second pattern includes the first pattern.
Abstract:
The present invention provides hierarchical modulation methods for robust symbol transmission and reception in a wireless access system, and devices supporting same. A method for transmitting a hierarchically modulated (HM) symbol in a wireless access system, according to an embodiment of the present invention, comprises the steps of: generating a first symbol; generating a second symbol; generating an HM symbol by combining the first symbol and the second symbol; and transmitting the HM symbol, wherein the first symbol can be generated by means of a spatial multiplexing (SM) technique, a beam-forming technique, or a space-time coding technique and the second symbol can be generated by means of a spatial multiplexing (SM) technique, a beam-forming technique, or a space-time coding technique.