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US 12,739,160 B2Granted
Terminal, base station, and communication reference signal transmission method
AssigneePanasonic Intellectual Property Corporation of America
InventorsTakashi Iwai, Tetsuya Yamamoto, Ayako Horiuchi
Life of this patent
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Abstract
The present invention achieves an improvement in channel estimation accuracy using a reference signal. This terminal comprises: a control circuit for setting a first upper limit value of a frequency interval at which a first reference signal is placed in a first bandwidth such that the first upper limit value is smaller than a second upper limit value of a frequency interval at which a second reference signal is placed in a second bandwidth wider than the first bandwidth; and a transmission circuit for transmitting the first reference signal on the basis of the first upper limit value.
Claims22
A terminal, comprising:
- control circuitry, which, in operation, determines a sequence length of a reference signal based on a number of transmission combs;
- and
- a transmitter, which, in operation, transmits the reference signal,
- wherein a bandwidth of the reference signal is selected from a plurality of bandwidths including a first bandwidth and a second bandwidth different from the first bandwidth, and
- a same lower limit threshold value for the sequence length is applied to determination of the sequence length of the reference signal for the first bandwidth and to determination of the sequence length of the reference signal for the second bandwidth.
2 more elements
A communication method, comprising:
- determining a sequence length of a reference signal based on a number of transmission combs;
- and
- transmitting the reference signal,
- wherein a bandwidth of the reference signal is selected from a plurality of bandwidths including a first bandwidth and a second bandwidth different from the first bandwidth, and
- a same lower limit threshold value for the sequence length is applied to determination of the sequence length of the reference signal for the first bandwidth and to determination of the sequence length of the reference signal for the second bandwidth.
2 more elements
A base station, comprising:
- a transmitter, which, in operation, transmits control information indicating a number of transmission combs;
- and
- a receiver, which, in operation, receives a reference signal with a sequence length determined based on the number of transmission combs,
- wherein a bandwidth of the reference signal is selected from a plurality of bandwidths including a first bandwidth and a second bandwidth different from the first bandwidth, and
- a same lower limit threshold value for the sequence length is applied to determination of the sequence length of the reference signal for the first bandwidth and to determination of the sequence length of the reference signal for the second bandwidth.
2 more elements
A communication method, comprising:
- transmitting control information indicating a number of transmission combs;
- and
- receiving a reference signal with a sequence length determined based on the number of transmission combs,
- wherein a bandwidth of the reference signal is selected from a plurality of bandwidths including a first bandwidth and a second bandwidth different from the first bandwidth, and
- a same lower limit threshold value for the sequence length is applied to determination of the sequence length of the reference signal for the first bandwidth and to determination of the sequence length of the reference signal for the second bandwidth.
2 more elements
An integrated circuit, comprising:
- control circuitry, which, in operation, controls determining a sequence length of a reference signal based on a number of transmission combs;
- and
- transmission circuitry, which, in operation, controls transmitting the reference signal,
- wherein a bandwidth of the reference signal is selected from a plurality of bandwidths including a first bandwidth and a second bandwidth different from the first bandwidth, and
- a same lower limit threshold value for the sequence length is applied to determination of the sequence length of the reference signal for the first bandwidth and to determination of the sequence length of the reference signal for the second bandwidth.
2 more elements
An integrated circuit, comprising:
- transmission circuitry, which, in operation, controls transmitting control information indicating a number of transmission combs;
- and
- reception circuitry, which, in operation, controls receiving a reference signal with a sequence length determined based on the number of transmission combs,
- wherein a bandwidth of the reference signal is selected from a plurality of bandwidths including a first bandwidth and a second bandwidth different from the first bandwidth, and
- a same lower limit threshold value for the sequence length is applied to determination of the sequence length of the reference signal for the first bandwidth and to determination of the sequence length of the reference signal for the second bandwidth.
2 more elements
Dependencies are inferred from the claim text.