APPARATUS AND METHOD FOR TRANSITTING CHANNEL QUALITY INDICATOR AND ACKNOWLEDGEMENT SIGNALS IN SC-FDMA COMMUNICATION SYSTEMS
First Claim
1. A method for transmitting one or more positive or negative acknowledgement (ACK/NACK) bits in response to data reception in a single-carrier frequency division multiple access (SC-FDMA) communication system, the method comprising:
- if the one or more ACK/NACK bits are one bit,applying a first code to a first symbol, if the acknowledgement bit is NACK, andapplying a second code to the first symbol, if the acknowledgement bit is ACK;
if the one or more ACK/NACK bits are two bits, applying quadrature phase shift keying (QPSK) modulation to the first symbol based on a value of the two ACK/NACK bits;
if no ACK/NACK bit exists, applying the first code to the first symbol; and
transmitting the first symbol and a second symbol in a slot.
1 Assignment
0 Petitions
Accused Products
Abstract
A method and apparatus are provided for transmitting one or more positive or negative acknowledgement (ACK/NACK) bits in response to data reception in a single-carrier frequency division multiple access (SC-FDMA) communication system. The method includes, if the one or more ACK/NACK bits are one bit, applying a first code to a first symbol, if the acknowledgement bit is NACK, and applying a second code to the first symbol, if the acknowledgement bit is ACK; if the one or more ACK/NACK bits are two bits, applying quadrature phase shift keying (QPSK) modulation to the first symbol based on a value of the two ACK/NACK bits; if no ACK/NACK bit exists, applying the first code to the first symbol; and transmitting the first symbol and a second symbol in a slot.
-
Citations
20 Claims
-
1. A method for transmitting one or more positive or negative acknowledgement (ACK/NACK) bits in response to data reception in a single-carrier frequency division multiple access (SC-FDMA) communication system, the method comprising:
-
if the one or more ACK/NACK bits are one bit, applying a first code to a first symbol, if the acknowledgement bit is NACK, and applying a second code to the first symbol, if the acknowledgement bit is ACK; if the one or more ACK/NACK bits are two bits, applying quadrature phase shift keying (QPSK) modulation to the first symbol based on a value of the two ACK/NACK bits; if no ACK/NACK bit exists, applying the first code to the first symbol; and transmitting the first symbol and a second symbol in a slot. - View Dependent Claims (2, 3, 4, 5)
-
-
6. An apparatus for transmitting one or more positive or negative acknowledgement (ACK/NACK) bits in response to data reception in a single-carrier frequency division multiple access (SC-FDMA) communication system, the apparatus comprising:
-
a controller configured to; if the one or more ACK/NACK bits are one bit, apply a first code to a first symbol, if the acknowledgement bit is NACK, and apply a second code to the first symbol, if the acknowledgement bit is ACK, if the one or more ACK/NACK bits are two bits, apply quadrature phase shift keying (QPSK) modulation to the first symbol based on a value of the two ACK/NACK bits, and if no ACK/NACK bit exists, apply the first code to the first symbol; and a transmitter configured to transmit the first symbol and a second symbol in a slot. - View Dependent Claims (7, 8, 9, 10)
-
-
11. A method for receiving one or more positive or negative acknowledgement (ACK/NACK) bits in response to data reception in a single-carrier frequency division multiple access (SC-FDMA) communication system, the method comprising:
-
receiving a first symbol and a second symbol in a slot; and identifying a channel quality indicator (CQI) and one or more ACK/NACK bits based on the first symbol and second symbol, wherein if the one or more ACK/NACK bits are one bit, the acknowledgement bit is identified as NACK, if a first code is applied to the first symbol, and the acknowledgement bit is identified as ACK, if a second code is applied to the first symbol, wherein if the one or more ACK/NACK bits are two bits, a quadrature phase shift keying (QPSK) modulation is applied to the first symbol based on a value of the two ACK/NACK bits, and wherein if no ACK/NACK bit exists, the first code is applied to the first symbol. - View Dependent Claims (12, 13, 14, 15)
-
-
16. An apparatus for receiving one or more positive or negative acknowledgement (ACK/NACK) bits in response to data reception in a single-carrier frequency division multiple access (SC-FDMA) communication system, the apparatus comprising:
-
a receiver configured to receive a first symbol and a second symbol in a slot; and a controller configured to identify a channel quality indicator (CQI) and one or more ACK/NACK bits based on the first symbol and second symbol, wherein if the one or more ACK/NACK bits are one bit, the acknowledgement bit is identified as NACK if a first code is applied to the first symbol, and the acknowledgement bit is identified as ACK if a second code is applied to the first symbol, wherein if the one or more ACK/NACK bits are two bits, a quadrature phase shift keying (QPSK) modulation is applied to the first symbol based on a value of the two ACK/NACK bits, and wherein if no ACK/NACK bit exists, the first code is applied to the first symbol. - View Dependent Claims (17, 18, 19, 20)
-
Specification