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US 10,382,178 B2Granted
Method for multiplexing control signals and reference signals in mobile communications system
AssigneeNEC Corporation
InventorsTakamichi Inoue, Yoshikazu Kakura
Life of this patent
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Abstract
A reference signal multiplexing method for multiple mobile stations includes: grouping together control signals for the multiple mobile stations; and multiplexing reference signals corresponding to the control signals by CDM over the same bandwidth as that of grouped control signals.
Claims58
A mobile station comprising:
- a transceiver;
- and
- at least one hardware processor,
- wherein the transceiver is configured to receive, from a base station, a first resource allocation information indicating resource of a first control signal and resource of a first reference signal;
- wherein the processor is configured:
- to Fourier transform the first control signal;
- to map the Fourier transformed first control signal such that the first control signal and a second control signal are multiplexed within a first transmission bandwidth, wherein the second control signal is transmitted based on a second resource allocation information to a base station;
- to inverse Fourier transform the mapped first control signal;
- to generate a first reference signal sequence, wherein the first reference signal sequence has a sequence length corresponding to an amount of all subcarriers included in the first transmission bandwidth;
- to map the generated first reference signal sequence to at least one first physical resource within the first transmission bandwidth;
- and
- to inverse Fourier transform the mapped first reference signal;
- wherein the transceiver is further configured:
- to transmit the inverse Fourier transformed first control signal to the base station in a first transmission interval;
- and
- to transmit the inverse Fourier transformed first reference signal to the base station in a second transmission interval.
13 more elements
A base station comprising:
- a transceiver;
- and
- at least one hardware processor,
- wherein the transceiver is configured:
- to transmit, to a first mobile station, a first resource allocation information indicating resource of a first control signal and resource of a first reference signal;
- to receive the first control signal in a first transmission interval;
- and
- to receive the first reference signal in a second transmission interval;
- wherein the processor is configured to demodulate the received first control signal by using the received first reference signal;
- wherein the first control signal is Fourier transformed;
- wherein the first control signal is mapped such that the first control signal and a second control signal are multiplexed within a first transmission bandwidth, wherein the second control signal is transmitted based on a second resource allocation information;
- wherein the first control signal is inverse Fourier transformed;
- wherein the first control signal is transmitted by the first mobile station;
- wherein the first reference signal is generated from a first reference signal sequence, wherein the first reference signal sequence has a sequence length corresponding to an amount of all subcarriers included in the first transmission bandwidth;
- wherein the first reference signal is mapped to at least one first physical resource within the first transmission bandwidth;
- wherein the first reference signal is inverse Fourier transformed the mapped first reference signal;
- wherein the first reference signal is transmitted by the first mobile station.
14 more elements
A communication method implemented in a mobile station, the communication method comprising:
- receiving, from a base station, a first resource allocation information indicating resource of a first control signal and resource of a first reference signal;
- Fourier transforming the first control signal;
- mapping the Fourier transformed first control signal such that the first control signal and a second control signal are multiplexed within a first transmission bandwidth, wherein the second control signal is transmitted based on a second resource allocation information to a base station;
- inverse Fourier transforming the mapped first control signal;
- generating a first reference signal sequence, wherein the first reference signal sequence has a sequence length corresponding to an amount of all subcarriers included in the first transmission bandwidth;
- mapping the generated first reference signal sequence to at least one first physical resource within the first transmission bandwidth;
- inverse Fourier transforming the mapped first reference signal;
- transmitting the inverse Fourier transformed first control signal to the base station in a first transmission interval;
- and
- transmitting the inverse Fourier transformed first reference signal to the base station in a second transmission interval.
7 more elements
A communication method implemented in a base station, the communication method comprising:
- transmitting, to a first mobile station, a first resource allocation information indicating resource of a first control signal and resource of a first reference signal;
- receiving the first control signal in a first transmission interval;
- receiving the first reference signal in a second transmission interval;
- and
- demodulating the received first control signal by using the received first reference signal;
- wherein the first control signal is:
- Fourier transformed;
- mapped such that the first control signal and a second control signal are multiplexed within a first transmission bandwidth, wherein the second control signal is transmitted based on a second resource allocation information;
- inverse Fourier transformed;
- and
- transmitted by the first mobile station;
- wherein the first reference signal is:
- generated from a first reference signal sequence, wherein the first reference signal sequence has a sequence length corresponding to an amount of all subcarriers included in the first transmission bandwidth;
- mapped to at least one first physical resource within the first transmission bandwidth;
- inverse Fourier transformed the mapped first reference signal;
- and
- transmitted by the first mobile station.
14 more elements
Dependencies are inferred from the claim text.