Demodulation reference signal mapping according to comb configuration
First Claim
Patent Images
1. A terminal device comprising:
- a transmitter configured to transmit a demodulation reference signal associated with a physical channel; and
a receiver configured to receive a configuration of comb of the demodulation reference signal;
wherein the demodulation reference signal is mapped based on the configuration of comb,the demodulation reference signal is defined based on an orthogonal sequence and a cyclic shift,a pattern of the orthogonal sequence and the cyclic shift is expanded in a case that the terminal device is configured with the comb of the demodulation reference signal,the receiver is configured to receive a downlink control information format, anda pattern of the comb, the cyclic shift, and the orthogonal sequence for each antenna port are determined based on a cyclic shift field in the downlink control information format in the case that the terminal device is configured with the comb of the demodulation reference signal.
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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.
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Citations
3 Claims
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1. A terminal device comprising:
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a transmitter configured to transmit a demodulation reference signal associated with a physical channel; and a receiver configured to receive a configuration of comb of the demodulation reference signal; wherein the demodulation reference signal is mapped based on the configuration of comb, the demodulation reference signal is defined based on an orthogonal sequence and a cyclic shift, a pattern of the orthogonal sequence and the cyclic shift is expanded in a case that the terminal device is configured with the comb of the demodulation reference signal, the receiver is configured to receive a downlink control information format, and a pattern of the comb, the cyclic shift, and the orthogonal sequence for each antenna port are determined based on a cyclic shift field in the downlink control information format in the case that the terminal device is configured with the comb of the demodulation reference signal.
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2. A base station device comprising:
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a transmitter configured to transmit a configuration of comb of a demodulation reference signal related to a physical channel and a configuration of an orthogonal sequence, wherein the configuration of an orthogonal sequence is expanded based on the configuration of the comb and a cyclic shift, the transmitter is configured to transmit a downlink control information format, and a pattern of the comb, the cyclic shift, and the orthogonal sequence for each antenna port are determined based on a cyclic shift field in the downlink control information format.
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3. A transmitting method in a terminal device comprising:
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transmitting a demodulation reference signal associated with a physical channel; and receiving a configuration of comb of the demodulation reference signal; and receiving a downlink control information format, wherein the demodulation reference signal is mapped based on the configuration of comb, the demodulation reference signal is defined based on an orthogonal sequence and a cyclic shift, a pattern of the orthogonal sequence and the cyclic shift is expanded in a case that the terminal device is configured with the comb of the demodulation reference signal, and a pattern of the comb, the cyclic shift, and the orthogonal sequence for each antenna port are determined based on a cyclic shift field in the downlink control information format in the case that the terminal device is configured with the comb of the demodulation reference signal.
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Specification