Terminal apparatus, base station, method and recording medium

A base station, comprising:

• a communication unit configured to form a plurality of beams and perform communication with a terminal apparatus;
• and
• a control unit configured to perform transmission of a group of downlink reference signals including a plurality of downlink reference signals transmitted using beams to the terminal apparatus, reception of first report information for downlink user data related to reception results of the group of downlink reference signals and second report information for beam tracking intended for the terminal apparatus from the terminal apparatus, a first transmission setting based on the first report information, and a second transmission setting based on the second report, information.

A terminal apparatus, comprising:

• a communication unit configured to form a plurality of beams and perform communication with a base station;
• and
• a control unit configured to transmit each of a plurality of uplink reference signals using beams directed in different directions.

A base station, comprising:

• a communication unit configured to form a plurality of beams and perform communication with a terminal apparatus;
• and
• a control unit configured to transmit each of a plurality of groups of downlink reference signals using a group of beams which come in different directions for the terminal apparatus and pass through each of a plurality of paths.

A method, comprising:

• performing communication with a base station configured to form a plurality of beams and perform communication;
• and
• reporting, by a processor, first report information for downlink user data related to reception results of a group of downlink reference signals including a plurality of downlink reference signals transmitted from the base station using the beams and second report information for beam tracking intended for a terminal apparatus by the base station to the base station.

A recording medium having a program recorded thereon, the program causing a computer to function as:

• a communication unit configured to perform communication with a base station configured to form a plurality of beams and perform communication;
• and
• a control unit configured to report first report information for downlink user data related to reception results of a group of downlink reference signals including a plurality of downlink reference signals transmitted from the base station using the beams and second report information for beam tracking intended for a terminal apparatus by the base station to the base station.

A method, comprising:

• forming a plurality of beams and performing communication with a terminal apparatus;
• and
• performing, by a processor, transmission of a group of downlink reference signals including a plurality of downlink reference signals transmitted using beams to the terminal apparatus, reception of first report information for downlink user data related to reception results of the group of downlink reference signals and second report information for beam tracking intended for the terminal apparatus from the terminal apparatus, a first transmission setting based on the first report information, and a second transmission setting based on the second report information.

A recording medium having a program recorded thereon, the program causing a computer to function as:

• a communication unit configured to form a plurality of beams and perform communication with a terminal apparatus;
• and
• a control unit configured to perform transmission of a group of downlink reference signals including a plurality of downlink reference signals transmitted using beams to the terminal apparatus, reception of first report information for downlink user data related to reception results of the group of downlink reference signals and second report information for beam tracking intended for the terminal apparatus from the terminal apparatus, a first transmission setting based on the first report information, and a second transmission setting based on the second report information.

A method, comprising:

• forming a plurality of beams and performing communication with a base station;
• and
• transmitting, by a processor, each of a plurality of uplink reference signals using beams directed in different directions.

A recording medium having a program recorded thereon, the program causing a computer to function as:

• a communication unit configured to form a plurality of beams and perform communication with a base station;
• and
• a control unit configured to transmit each of a plurality of uplink reference signals using beams directed in different directions.

A method, comprising:

• forming a plurality of beams and performing communication with a terminal apparatus;
• and
• transmitting, by a processor, each of a plurality of groups of downlink reference signals using a group of beams which come in different directions for the terminal apparatus and pass through each of a plurality of paths.

A recording medium having a program recorded thereon, the program causing a computer to function as:

• a communication unit configured to form a plurality of beams and perform communication with a terminal apparatus;
• and
• a control unit configured to transmit each of a plurality of groups of downlink reference signals using a group of beams which come in different directions for the terminal apparatus and pass through each of a plurality of paths.