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US 10,375,678 B2Granted
Communication system, base station apparatus, mobile station apparatus, and communication method
AssigneeSharp Kabushiki Kaisha
InventorsWataru Ouchi, Shoichi Suzuki, Tatsushi Aiba, Daiichiro Nakashima
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Abstract
A communication system comprises at least a base station device and a terminal device. The terminal device transmits a demodulation reference signal associated with a physical channel, receives a configuration of comb of the demodulation reference signal, and transmits the demodulation reference signal mapped based on the configuration of comb. The base station device transmits a configuration of comb of a demodulation reference signal related to a physical channel.
Claims2
A mobile station apparatus comprising:
- a pseudo-random sequence generator configured to be initialized, at a beginning of each radio frame, with a first value using a first parameter;
- wherein
- in a first case that a second parameter is set, the pseudo-random sequence generator is configured to be initialized with the first value using the second parameter, for hopping of a first base sequence for a physical uplink control channel (PUCCH),
- the second parameter is different from the first parameter;
- in a second case that a third parameter is set, the pseudo-random sequence generator is configured to be initialized with the first value using the third parameter, for hopping of a second base sequence for a demodulation reference signal for a physical uplink shared channel (PUSCH), and
- the third parameter is different from the first parameter and the second parameter.
3 more elements
A method for a mobile station apparatus, comprising:
- initializing a pseudo-random sequence generator at a beginning of each radio frame, with a first value using a first parameter;
- in a first case that a second parameter is set, initializing the pseudo-random sequence generator with the first value using the second parameter, for hopping of a first base sequence for a physical uplink control channel (PUCCH), wherein
- the second parameter is different from the first parameter;
- and
- in a second case that a third parameter is set, initializing the pseudo-random sequence generator with the first value using the third parameter, for hopping of a second base sequence for a demodulation reference signal for a physical uplink shared channel (PUSCH), wherein
- the third parameter is different from the first parameter and the second parameter.
3 more elements
Dependencies are inferred from the claim text.