Abstract
A method for transmitting control information by transmitting a reference signal from a first transceiver to a second transceiver in response to the reception of the reference signal determining at the second transceiver a plurality of control channel elements based upon the received reference signal jointly encoding the plurality of control channel elements at the second transceiver to generate a control signal and transmitting the control signal from the second transceiver to the first transceiver.
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US2008232449A1 | 4G | 29/12/2008 | ISLD-200812-015 | SAMSUNG | Yes | Basis Patent | ||||
US2008232449A1 | 5G | 03/05/2018 | ISLD-201805-014 | SAMSUNG | Yes | Basis Patent | ||||
US8451915B2 | 4G | 29/12/2008 | ISLD-200812-015 | SAMSUNG | Yes | Basis Patent | ||||
US8451915B2 | 5G | 03/05/2018 | ISLD-201805-014 | SAMSUNG | Yes | Basis Patent | ||||
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Claim
1. A method for transmitting control information by a user equipment (UE), the method comprising:
receiving a reference signal from a first transceiver;
in response to the reception of the reference signal, determining a plurality of control information based upon the received reference signal;
jointly encoding the plurality of control information using a block code;
modulating the encoded control information to generate a plurality of modulated symbols using a modulation scheme;
multiplying a selected sequence with the modulated symbols to generate a plurality of multiplied sequences;
mapping the plurality of multiplied sequences into two sets of resource elements in time and frequency domains in a subframe, the two sets of resource elements allocated to the UE,
a first set of the two sets of resource elements being located in one edge of the subframe in the frequency domain and in a first half of the subframe in the time domain, and
a second set of the two sets of resource elements being located in an opposite edge of the subframe in the frequency domain and in a second half of the subframe in the time domain; and
converting the mapped sequences to radio frequency signals for transmission.
2. The method of claim 1, wherein the control information is at least one of channel quality information (CQI), a precoding matrix indication (PMI), and a rank indication (RI).
3. The method of claim 1, wherein the modulation scheme is quadrature phase shift key (QPSK) modulation.
4. The method of claim 1, further comprising:
applying a constant amplitude zero autocorrelation (CAZAC) sequence to the modulated symbols to generate a plurality of CAZAC-modulated sequences; and
transmitting the plurality of CAZAC-modulated sequences using a number of subcarriers,
wherein the number of subcarriers is an integer multiple of a length of the CAZAC sequence, and
wherein the length of the CAZAC sequence is 12.
5. The method of claim 1, further comprising:
applying a constant amplitude zero autocorrelation (CAZAC) sequence to the modulated symbols to generate a plurality of CAZAC-modulated sequences; and
transmitting the plurality of CAZAC-modulated sequences using a number of subcarriers,
wherein the number of subcarriers is an integer multiple of a length of the CAZAC sequence,
wherein the plurality of CAZAC-modulated sequences are mapped into the two sets of resource elements.
6. A user equipment (UE), comprising:
a receiver configured to receive a reference signal from a first transceiver; and
a controller configured to:
in response to the reception of the reference signal, determine a plurality of control information based upon the received reference signal,
jointly encode the plurality of control information using a block code,
modulate the encoded control information to generate a plurality of modulated symbols using a modulation scheme,
multiply a selected sequence to with the modulated symbols to generate a plurality of multiplied sequences,
map the plurality of multiplied sequences into two sets of resource elements in time and frequency domains in a subframe, the two sets of resource elements allocated to the UE,
a first set of the two sets of resource elements being located in one edge of the subframe in the frequency domain and in a first half of the subframe in the time domain, and
a second set of the two sets of resource elements being located in an opposite edge of the subframe in the frequency domain and in a second half of the subframe in the time domain, and
convert the mapped sequences to radio frequency signals for transmission.
7. The UE of claim 6, wherein the control information is at least one of channel quality information (CQI), a precoding matrix indication (PMI), and a rank indication (RI).
8. The UE of claim 6, wherein the modulation scheme is quadrature phase shift key (QPSK) modulation.
9. The UE of claim 6, wherein the controller configured to:
apply a constant amplitude zero autocorrelation (CAZAC) sequence to the modulated symbols to generate a plurality of CAZAC-modulated sequences; and
cause transmission of the plurality of CAZAC-modulated sequences using a number of subcarriers,
wherein the number of subcarriers is an integer multiple of a length of the CAZAC sequence, and
wherein the length of the CAZAC sequence is 12.
10. The UE of claim 6, wherein the controller configured to:
apply a constant amplitude zero autocorrelation (CAZAC) sequence to the modulated symbols to generate a plurality of CAZAC-modulated sequences; and
cause transmission of the plurality of CAZAC-modulated sequences using a number of subcarriers,
wherein the number of subcarriers is an integer multiple of a length of the CAZAC sequence, and
wherein the plurality of CAZAC-modulated sequences are mapped into the two sets of resource elements.
11. A method for receiving control information from a user equipment (UE) at a base station, comprising:
transmitting a reference signal from a first transceiver; and
receiving signals from the UE at the base station, the signals generated by:
receiving the reference signal at the UE;
in response to the reception of the reference signal, determining a plurality of control information based upon the received reference signal,
jointly encoding the plurality of control information using a block code,
modulating the encoded control information to generate a plurality of modulated symbols using a modulation scheme,
multiplying a selected sequence with the modulated symbols to generate a plurality of multiplied sequences,
mapping the plurality of multiplied sequences into two sets of resource elements in time and frequency domains in a subframe, the two sets of resource elements allocated to the UE,
a first set of the two sets of resource elements being located in one edge of the subframe in the frequency domain and in a first half of the subframe in the time domain, and
a second set of the two sets of resource elements being located in an opposite edge of the subframe in the frequency domain and in a second half of the subframe in the time domain; and
converting the mapped sequences to radio frequency signals for transmission.
12. The method of claim 11, wherein the control information is at least one of channel quality information (CQI), a precoding matrix indication (PMI), and a rank indication (RI).
13. The method of claim 11, wherein the modulation scheme is quadrature phase shift key (QPSK) modulation.
14. The method of claim 11, wherein the received signals are generated by:
applying a constant amplitude zero autocorrelation (CAZAC) sequence to the modulated symbols to generate a plurality of CAZAC-modulated sequences; and
transmitting the plurality of CAZAC-modulated sequences using a number of subcarriers,
wherein the number of subcarriers is an integer multiple of a length of the CAZAC sequence, and
wherein the length of the CAZAC sequence is 12.
15. The method of claim 11, wherein the received signals are generated by:
applying a constant amplitude zero autocorrelation (CAZAC) sequence to the modulated symbols to generate a plurality of CAZAC-modulated sequences; and
transmitting the plurality of CAZAC-modulated sequences using a number of subcarriers,
wherein the number of subcarriers is an integer multiple of a length of the CAZAC sequence, and
wherein the plurality of CAZAC-modulated sequences are mapped into the two sets of resource elements.
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