Method and apparatus for communication for terminal in wireless communication system
AssigneeLG Electronics Inc.
InventorsDongyoun Seo, Joonkui Ahn, Yunjung Yi, Bonghoe Kim, Daesung Hwang
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Abstract
Provided is a method for communication for a second terminal and a second terminal apparatus using the method in a wireless communication system utilizing a first frequency band by which a first terminal can receive a signal from a base station and a second frequency band by which the first terminal can transmit a signal to the base station. The method is characterized by receiving a signal from the base station from a part of a subframe of the second frequency band, and transmitting a signal to the base station from the remaining subframe of the second frequency band.
Claims2
A method for receiving a downlink signal in a frequency division duplex (FDD) system which uses an uplink frequency band and a downlink frequency band, the method performed by a user equipment (UE) and comprising:
- receiving, from a base station, downlink subframe configuration information;
- receiving, from the base station, the downlink signal via a first specific subframe on the uplink frequency band based on the downlink subframe configuration information;
- and
- transmitting, to the base station, an uplink signal via a second specific subframe other than the first specific subframe on the uplink frequency band,
- wherein the downlink subframe configuration information is information for whether the downlink signal is received on the uplink frequency band, which is dedicated for uplink transmission, in the FDD system or not,
- wherein, when the UE supports a carrier aggregation, the UE receives the downlink subframe configuration information via a downlink frequency band,
- when the UE does not support the carrier aggregation, the UE receives the downlink subframe configuration information via a downlink subframe on the uplink frequency band,
- wherein each of the first specific subframe and the second specific subframe is a subframe on the uplink frequency band in the FDD system,
- wherein the first specific subframe is a default downlink subframe through which the UE receives a primary synchronization signal (PSS), a secondary synchronization signal (SSS) or a cell specific reference signal (CRS) for synchronization, and
- wherein the second specific subframe is a default uplink subframe through which a legacy UE, which is different from the UE, transmits a physical random access channel (PRACH).
A user equipment (UE) for communicating with a base station in a frequency division duplex (FDD) system which uses an uplink frequency band and a downlink frequency band, the UE comprising:
- a transceiver configured to transmit and receive a radio signal;
- and
- a processor connected to the transceiver,
- wherein the processor is configured to:
- control the transceiver to receive, from a base station, downlink subframe configuration information,
- control the transceiver to receive, from the base station, the downlink signal via a first specific subframe on the uplink frequency band based on the downlink subframe configuration information, and
- control the transceiver to transmit, to the base station, an uplink signal via a second specific subframe other than the first specific subframe on the uplink frequency band,
- wherein the downlink subframe configuration information is information for whether the downlink signal is received on the uplink frequency band, which is dedicated for uplink transmission, in the FDD system or not,
- wherein, when the UE supports a carrier aggregation, the UE receives the downlink subframe configuration information via a downlink frequency band,
- when the UE does not support the carrier aggregation, the UE receives the downlink subframe configuration information via a downlink subframe on the uplink frequency band,
- wherein each of the first specific subframe and the second specific subframe is a subframe on the uplink frequency band in the FDD system,
- wherein the first specific subframe is a default downlink subframe through which the UE receives a primary synchronization signal (PSS), a secondary synchronization signal (SSS) or a cell specific reference signal (CRS) for synchronization, and
- wherein the second specific subframe is a default uplink subframe through which a legacy UE, which is different from the UE, transmits a physical random access channel (PRACH).
Dependencies are inferred from the claim text.