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US 2017/0366984 A1Published application
Base station device, method for operating same, and terminal device
AssigneesSK Telecom Co., Ltd., Industry-Academic Cooperation Foundation, Yonsei University
InventorsMin Soo NA, Young Lak KIM, Tak Ki YU, Sung Ho MOON, Tae Guen KIM, Yo Seop PARK, Dae Sik HONG, Han Ho WANG
Life of this patent
Estimating the term…
Abstract
A base station device can efficiently remove signal interference between base stations in a manner appropriate for FDD in a network environment where a number of base stations employing FDD coexist. A method of operating a base station device and a terminal device are also disclosed.
Claims16
A base station device comprising:
- a signal receiving unit configured to receive a downlink signal from an adjacent base station over an uplink frequency band during a first time interval, wherein the adjacent base station is using the uplink frequency band for a downlink frequency band;
- a measuring unit configured to measure a channel environment with the adjacent base station based on the downlink signal from the adjacent base station;
- and
- an interference removing unit configured to remove the downlink signal from the adjacent base station from a signal received over an uplink frequency band during a second time interval based on the channel environment with the adjacent base station.
1 more element
A method of operating a base station device, the method comprising:
- receiving a downlink signal from an adjacent base station over an uplink frequency band during a first time interval, wherein the adjacent base station is using the uplink frequency band for a downlink frequency band;
- measuring a channel environment with the adjacent base station based on the downlink signal from the adjacent base station;
- and
- removing the downlink signal from the adjacent base station from a signal received over an uplink frequency band during a second time interval based on the channel environment with the adjacent base station.
1 more element
A terminal device comprising:
- a signal transmitting/receiving unit configured to use a frame having a structure in which a frequency band allocated for uplink transmission is separated from a frequency band allocated for downlink transmission to transmit/receive signals to/from a base station to which the terminal device is connected over an uplink frequency band and a downlink frequency band, respectively;
- a checking unit configured to check an inverted frame use time at which the base station uses an inverted frame having a structure in which frequency bands are allocated in the opposite manner to the frame;
- and
- a control unit configured to control the signal transmitting/receiving unit so that the inverted frame is used during the inverted frame use time to transmit/receive signals to/from the base station.
1 more element
A terminal device comprising:
- a signal transmitting/receiving unit configured to use a full duplex (FD) frame having a structure in which a same frequency band is allocated for uplink and downlink transmissions to transmit/receive signals to/from a first base station using a frame having a structure in which frequency bands are allocated for uplink and downlink transmissions separately and a second base station using an inverted frame having a structure in which frequency bands are allocated in the opposite manner to the frame;
- a checking unit configured to check an silence inverted frame use time at which the second base station uses an silent inverted frame having a structure in which no uplink signal is transmitted in an uplink frequency band of the inverted frame;
- and
- a control unit configured to control the signal transmitting/receiving unit so that only an operation of receiving a downlink signal from the first base station over the frequency band of the FD frame is performed during the silent inverted frame use time.
1 more element
Dependencies are inferred from the claim text.