Apparatus and method for transmitting control information in a mobile communication system

A method for receiving control information for receipt of data transmitted by a receiver in a transmitter in a mobile communication system including the transmitter for transmitting the data and the receiver for receiving the data, the method comprising the steps of:

• receiving a signal from the transmitter;
• calculating correlation values between the received signal and pilot patterns used in the transmitter;
• determining a pilot pattern inserted in the received signal based on the correlation values;
• determining control information corresponding to the determined pilot pattern;
• outputting the determined control information;
• and
• determining whether the data is received and, if received, whether the received data is defective, based on the determined control information,
• wherein the pilot pattern includes a first pilot pattern used when a first control information is not transmitted, a second pilot pattern being orthogonal with the first pilot pattern for a second control information, and a third pilot pattern generated by inverting a sign of the second pilot pattern for a third control information, and
• wherein the first control information is a MISS information indicating a failure to receive corresponding data, the second control information is ACK information indicating normal receipt of the corresponding data, and the third control information is NACK information indicating defective data has been received.

An apparatus for transmitting control information for receipt of data in a receiver in a mobile communication system including a transmitter for transmitting the data and the receiver for receiving the data, the apparatus comprising:

• a pilot pattern selector for selecting one pilot pattern from among a predetermined number of different pilot patterns according to whether the data is received and, if received, whether the received data is defective;
• a pilot pattern inserter for inserting the selected pilot pattern in a pilot field of a physical channel as the control information;
• and
• an antenna for transmitting the physical channel;
• wherein the predetermined number of different pilot patterns include a first pilot pattern used when a first control information is transmitted, a second pilot pattern being orthogonal with the first pilot pattern for a second control information, and a third pilot pattern generated by inverting a sign of the second pilot pattern.

An apparatus for receiving control information for receipt of data transmitted by a receiver in a transmitter in a mobile communication system including the transmitter for transmitting the data including a selected pilot pattern among a plurality of pilot patterns and the receiver for receiving the data, the apparatus comprising:

• a channel compensator for performing channel compensation on a signal transmitted from the transmitter;
• and
• a control signal discriminator for calculating correlation values between the signal and pilot patterns used in the transmitter, determining a pilot pattern inserted in the signal based on the correlation values;
• determining control information corresponding to the determined pilot pattern and outputting the determined control information,
• wherein the pilot pattern includes a first pilot pattern used when a first control information is transmitted, a second pilot pattern being orthogonal with the first pilot pattern for a second control information, and a third pilot pattern generated by inverting a sign of the second pilot pattern for a third control information, and
• wherein the first control information is a MISS information indicating a failure to receive corresponding data, the second control information is ACK information indicating normal receipt of the corresponding data, and the third control information is NACK information indicating defective data has been received.

A method for transmitting control information for receipt of data in a receiver in a mobile communication system including a transmitter for transmitting the data and the receiver for receiving the data, the method comprising the steps of:

• selecting the control information among at least three control states according to whether the data is received;
• and
• selecting a pilot pattern among at least three pilot patterns according to the selected control information, and inserting the selected pilot pattern in a pilot field of a physical channel as the control information, before transmission;
• wherein the pilot pattern selected according to the control information is an orthogonal pattern which is generated using remaining bits except pilot bits having a predetermined purpose among bits of a basic pilot pattern.