Method and apparatus for transmitting/receiving uplink signaling information in a single carrier FDMA system

An apparatus for transmitting multiple types of uplink information in a Single Carrier Frequency Division Multiple Access (SC-FDMA) wireless communication system, the apparatus comprising:

• a multiplexer for multiplexing uplink data and control information for the uplink data when uplink data exists to be transmitted and no uplink signaling information is to be transmitted, and multiplexing uplink data, control information for the uplink data, and the uplink signaling information when both the uplink data exists to be transmitted and the uplink signaling information exists to be transmitted;
• a data resource mapper for transmitting information multiplexed by the multiplexer through a first frequency resource allocated for the uplink data;
• and
• an uplink signaling resource mapper for transmitting the uplink signaling information through a second frequency resource allocated for the uplink signaling information, when no uplink data is to be transmitted.

A method for receiving multiple types of uplink information in a Single Carrier Frequency Division Multiple Access (SC-FDMA) wireless communication system, the method comprising the steps of:

• (1) determining whether uplink data has been received through a first frequency resource allocated for the uplink data;
• (2) determining whether information received through the first frequency resource includes uplink signaling information, when the uplink data has been received;
• (3) demultiplexing the information received through the first frequency resource into the uplink data and control information for the uplink data, when the information received through the first frequency resource does not include uplink signaling information;
• (4) demultiplexing the information received through the first frequency resource into the uplink data, control information for the uplink data, and uplink signaling information, when the information received through the first frequency resource includes the uplink signaling information;
• and
• (5) receiving the uplink signaling information through a second frequency resource allocated for the uplink signaling information, when the uplink data has not been received.

An apparatus for receiving multiple types of uplink information in a Single Carrier Frequency Division Multiple Access (SC-FDMA) wireless communication system, the apparatus comprising:

• a determination unit for determining whether information includes uplink signaling information, when the information has been received through a first frequency resource allocated for uplink data;
• a demultiplexer for demultiplexing the information received through the first frequency resource into the uplink data and control information for the uplink data when the information received through the first frequency resource does not include uplink signaling information, and demultiplexing the information received through the first frequency resource into the uplink data, control information for the uplink data, and uplink signaling information, when the information received through the first frequency resource includes the uplink signaling information;
• and
• a receiver unit for receiving the uplink signaling information through a second frequency resource allocated for the uplink signaling information, when no information is received through the first frequency resource.