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US 9,521,019 B2Granted
Efficient uplink feedback in a wireless communication system
AssigneeSamsung Electronics Co., Ltd.
InventorsFarooq Khan, Zhouyue Pi
Life of this patent
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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.
Claims15
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.
7 more elements
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.
8 more elements
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.
10 more elements
Dependencies are inferred from the claim text.