High speed moving terminal and method for transmitting control information thereof, and method for receiving control information of base station in mobile wireless backhaul network

A high speed moving terminal including a first antenna and a second antenna, the high speed moving terminal comprising:

• a first antenna communicating with a first radio unit (RU) of a base station based on a first uplink-downlink configuration;
• a second antenna communicating with a second RU of a base station based on a second uplink-downlink configuration;
• a first signal processor connected to the first antenna;
• a second signal processor connected to the second antenna;
• and
• a controller configured to:
• receive a first downlink signal from the first RU and a second downlink signal from the second RU;
• and
• transmit first control information corresponding to the first downlink signal to the second RU by using the second antenna through a uplink subframe according to the second uplink-downlink configuration and second control information corresponding to the second downlink signal to the first RU by using the first antenna through a uplink subframe according to the first uplink-downlink configuration,
• wherein a number of uplink subframes included in the second uplink-downlink configuration is different from a number of uplink subframes included in the first uplink-downlink configuration.

A method for receiving control information at a base station of a mobile wireless backhaul network where a first radio unit (RU) and a second RU are distributedly installed, the method comprising:

• communicating with a first antenna of a high speed moving terminal by using the first RU based on a first uplink-downlink configuration, and communicating with a second antenna of the high speed moving terminal by using the second RU based on a second uplink-downlink configuration which is different from the first uplink-downlink configuration;
• transmitting a downlink signal to the first antenna of the high speed moving terminal by using the first RU;
• and
• receiving control information corresponding to the downlink signal from the second antenna of the high speed moving terminal by using the second RU through an uplink subframe according to the second uplink-downlink configuration,
• wherein a number of uplink subframes included in the second uplink-downlink configuration is the same as a number of uplink subframes included in the first uplink-downlink configuration, and a switching point from downlink to uplink in the second uplink-downlink configuration is cyclically shifted from a switching point from downlink to uplink in the first uplink-downlink configuration by a predetermined number of subframes.