摘要:
An apparatus and method for providing relay link zone information in a multi-hop relay BWA communication system, where a BS performs a network entry procedure with an RS during an initial access of the RS to the BS, generates a message including relay link zone information regarding a relay link zone in which the BS communicates with the RS, processes the message in a physical layer, and transmits the processed message to the RS.
摘要:
Data retransmission apparatus and method in a wireless relay communication system are provided. It is checked whether an Acknowledgement (ACK) message or a Negative ACK (NACK) message for data is received from a Relay Station (RS), which receives the data from a Mobile Station (MS). Scheduling information for transmitting the data is transmitted to the RS, when the ACK message is received from the RS. Errors are checked for in of the data, when the data is received from the RS. The RS is requested to retransmit the data, when the data has an error. Accordingly, since the RS retransmits only the error-free data to the BS, the BS can enhance the data reliability.
摘要:
An apparatus and method for transmitting control information to a Relay Station (RS) in a multi-hop relay broadband wireless communication system is disclosed. The apparatus includes a generator, a controller, and a communication unit. The generator generates control information to be transmitted to a lower RS. The controller controls and transmits the control information during a first relay link transmission interval among at least one relay link transmission interval distributed within a frame. The communication unit transmits the control information to the lower RS.
摘要:
Provided is an apparatus and method for transmitting frame information in a wireless communication system using a relay scheme. In a method for transmitting frame information from an upper node in the wireless communication system, downlink section information for communication with the lower relay station for a relay service is transmitted to a lower relay station at the request of the lower relay station for an initial connection. After the initial connection, frame information for communication with the lower relay station for a relay service is transmitted to the lower relay station through the downlink section.
摘要:
Provided are an apparatus and method for negotiating a frame offset between a Base Station (BS) and a Relay Station (RS) in a wireless communication system using a multi-hop relay scheme. A communication method of a superordinate station includes, upon detecting an initial access of an relay station, determining an offset value between a frame number used in the superordinate station and a frame number to be used in the relay station; generating a message including RS frame offset information corresponding to the offset value; and transmitting the generated message to the relay station. Accordingly, since the base station and the relay station share the frame offset, the base station can transmit a specific broadcast message in advance to the relay station by considering the frame offset, and the relay station can transmit data, which has to be transmitted in synchronization with the base station at the same time point or at the same frame number, to a Mobile Station (MS) at an exact time point.
摘要:
Provided are an apparatus and method for negotiating a frame offset between a Base Station (BS) and a Relay Station (RS) in a wireless communication system using a multi-hop relay scheme. A communication method of a superordinate station includes, upon detecting an initial access of an relay station, determining an offset value between a frame number used in the superordinate station and a frame number to be used in the relay station; generating a message including RS frame offset information corresponding to the offset value; and transmitting the generated message to the relay station. Accordingly, since the base station and the relay station share the frame offset, the base station can transmit a specific broadcast message in advance to the relay station by considering the frame offset, and the relay station can transmit data, which has to be transmitted in synchronization with the base station at the same time point or at the same frame number, to a Mobile Station (MS) at an exact time point.
摘要:
An apparatus and method for transmitting an ACK/NACK message from an RS in a wireless communication system using relaying is disclosed, in which the RS checks scheduling information for data transmission from a lower node, receives data from the lower node according to the scheduling information, checks errors in the data, generates error report information indicating whether the data has errors, and transmits the error report information to an upper node.
摘要:
Provided is an apparatus and method for transmitting frame information in a wireless communication system using a relay scheme. In a method for transmitting frame information from an upper node in the wireless communication system, downlink section information for communication with the lower relay station for a relay service is transmitted to a lower relay station at the request of the lower relay station for an initial connection. After the initial connection, frame information for communication with the lower relay station for a relay service is transmitted to the lower relay station through the downlink section.
摘要:
Apparatus and method for supporting a relay service in a multihop relay wireless communication system are provided. The method includes setting Tx/Rx mode switch region information of a Relay Station (RS). A signal is sent to a Mobile Station (MS) traveling in a service coverage during a first interval of a DownLink (DL) subframe according to resource allocation information. The mode switch region information and a signal are sent over a second interval of the DL subframe. Accordingly, the RS can communicate with a Base Station (BS) with accurate synchronization.
摘要:
An apparatus and method for communicating control information in a Broadband Wireless Access (BWA) system using a multi-hop relay scheme is provided. A method of transmitting control information includes generating scheduling information by performing scheduling for a Relay Station (RS); determining a valid duration for the scheduling information; generating a resource allocation message containing the scheduling information and the valid duration information; and processing the resource allocation message in a physical layer and for transmitting the resource allocation message to the RS.