Apparatus and method for transmitting control message in multihop relay wireless communication system

An operating method of a Relay Station (RS) in a wireless relay communication system, the method comprising:

• receiving first data from a first lower node;
• transmitting the first data to an upper node;
• receiving second data from a second lower node;
• transmitting the second data to the upper node, in response to receipt of an uplink data from a lower node other than the at least one RS;
• receiving a plurality of acknowledgement information items from at least one lower RS, transmitting the plurality of information to the upper node at a same time corresponding to a single transmission time frame,
• wherein each of the plurality of information items includes an Acknowledgement (ACK) or a Negative ACK (NACK), and
• wherein transmitting the plurality of acknowledgement information items to the upper node comprises:
• confirming control channel information for transmitting the plurality of acknowledgement information items, wherein the control channel information is provided from the upper node;
• confirming regions allocated for unique IDentifiers (IDs) of the lower nodes based on the control channel information and
• transmitting the plurality of acknowledgement information items to the upper node at the same time using regions confirmed in the control channel information and by allocating the plurality of acknowledgement information items to the regions allocated for the lower nodes.

An operating method of an upper node in a wireless relay communication system, the method comprising:

• allocating a control channel for receiving information in response to data transmitted to at least one lower node from a lower Relay Station (RS);
• transmitting allocation information of the control channel to the lower RS;
• and
• receiving a plurality of acknowledgement information items from the lower RS according to the allocation information at a same time corresponding to a single reception time frame,
• wherein the plurality of acknowledgement information items is generated by the at least one lower node, in response to the receipt of data from the upper node,
• wherein each of the plurality of information items includes an Acknowledgement (ACK) or a Negative ACK (NACK), and
• wherein allocating the control channel comprises:
• confirming unique IDentifiers (IDs) of the one or more lower nodes for receiving the information indicative of the error;
• and
• allocating control channels for the information indicative of the error based on the unique IDs.

A Relay Station (RS) in a wireless relay communication system, comprising:

• a receiver for receiving first data and second data from an upper node;
• and
• a transmitter for transmitting the first data to a first lower node, and for transmitting the second data to a second lower node,
• wherein the receiver receives a plurality of acknowledgement information items from at least one of the first lower node and the second lower node, in response to receipt of at least one of the first data and the second data from the RS,
• wherein the transmitter transmits the received plurality of acknowledgement information items to the upper node at a same time corresponding to a single transmission time frame,
• wherein each of the plurality of acknowledgement information comprises an Acknowledgement (ACK) or a Negative ACK (NACK), and
• wherein transmitting the plurality of acknowledgement information items to the upper node includes confirming control channel information for transmitting the plurality of acknowledgement information items, wherein the control channel information is provided from the upper node, confirming regions allocated for unique IDentifiers (IDs) of the lower nodes based on the control channel information, and transmitting the plurality of acknowledgement information items to the upper node at the same time using regions confirmed in the control channel information and by allocating the plurality of acknowledgement information items to the regions allocated for the lower nodes.

A Relay Station (RS) in a wireless relay communication system, comprising:

• a receiver for receiving first data from a first lower node, and for receiving second data from a second lower node;
• a transmitter for transmitting the first data and the second data to an upper node,
• wherein, when a plurality of acknowledgement information items is received from at least one lower RS in response to receipt of uplink data from a lower node other than the at least one lower RS, the transmitter transmits the plurality of acknowledgement information items to the upper node at a same time corresponding to a single transmission time frame,
• wherein each of the plurality of information comprises an Acknowledgement (ACK) or a Negative ACK (NACK), and
• wherein transmitting the plurality of acknowledgement information items to the upper node includes confirming control channel information for transmitting the plurality of acknowledgement information items, wherein the control channel information is provided from the upper node, confirming regions allocated for unique IDentifiers (IDs) of the lower nodes based on the control channel information, and transmitting the plurality of acknowledgement information items to the upper node at the same time using regions confirmed in the control channel information and by allocating the plurality of acknowledgement information items to the regions allocated for the lower nodes.

An operating method of a Relay Station (RS) in a wireless relay communication system, the method comprising:

• receiving a plurality of acknowledgement information items from at least one lower node, in response to reception of data from the RS;
• and
• transmitting the received plurality of acknowledgment information items to an upper node at a same time corresponding to a single transmission time frame,
• wherein each of the plurality of acknowledgement information items comprises an Acknowledgement (ACK) or a Negative ACK (NACK), and
• wherein transmitting the plurality of acknowledgement information items to the upper node includes confirming control channel information for transmitting the plurality of acknowledgement information items, wherein the control channel information is provided from the upper node, confirming regions allocated for unique IDentifiers (IDs) of the lower nodes based on the control channel information, and transmitting the plurality of acknowledgement information items to the upper node at the same time using regions confirmed in the control channel information and by allocating the plurality of acknowledgement information items to the regions allocated for the lower nodes.