| 摘要 |
<p>Provided are methods, apparatuses and computer program products for transmitting physical random access channel signals or sounding reference signal on the backhaul uplink. A method comprises identifying one or more subframes from a plurality of backhaul uplink subframes, wherein each of the plurality of backhaul uplink subframes except the one or more subframes being split into two slots in a time domain, including one slot being used for backhaul uplink transmission from a relay node to an evolved node B and another slot being used for access uplink transmission from a user equipment to the relay node; and transmitting physical random access channel signals or sounding reference signals on the backhaul uplink using the one or more subframes. Another method comprises transmitting a sounding reference signal in a last symbol in a first slot of a backhaul uplink subframe. A further method comprises scheduling transmitting, by a relay node, a sounding reference signal in a backhaul uplink subframe. Thus, backhaul scheduling delay may be shortened and backhaul scheduling gain may be increased with guaranteed backhaul sounding reference signal transmission.</p> |
