Controlling a transmission of information in a wireless communication network with a relay node

摘要

The present invention relates to a transmission of information in a wireless communication network between a radio access node and a relay node, wherein, according to a new ground rule, for each allocated downlink subframe for a downlink transmission from the access node to the relay node, an uplink transmission subframe for an uplink transmission is allocated four transmission time intervals later. A downlink subframe is only allocated when a further subframe of the same transmission time interval for a transmission from the relay node to the user equipment is a subframe of a type that indicates to a user equipment that no data are received beyond a control region of the subframe.

主权项

1. A method for controlling a transmission of information in a wireless communication network between a radio access node and a relay node, the information being transmitted in a sequence of subframes, wherein a subframe comprises a control region and an information region containing the transmitted information, and a subframe corresponds to a transmission time interval, the method comprising:
allocating a downlink subframe for a downlink transmission of information from the radio access node to the relay node, wherein a downlink subframe for a downlink transmission is allocated only when a further subframe of the same transmission time interval for a transmission from the relay node to a user equipment is a subframe of a type that indicates to the user equipment that no data are received beyond the control region, and allocating, for an allocated downlink subframe, an uplink subframe for an uplink transmission of information from the relay node to the radio access node a certain number of transmission time intervals later,
wherein, when an uplink subframe is received from the relay node, corruption of the information contained in the received uplink subframe is checked during a Hybrid Automatic Repeat Request (HARQ) process, wherein when a subframe is not detected as corrupted, no explicit acknowledgement feedback on a Physical HARQ Indicator Channel (PHICH) is transmitted back to the relay node,wherein for a received uplink subframe detected as corrupted, an uplink grant is transmitted to the relay node in the next available downlink subframe associated with the HARQ process.