The present invention relates to a radio server node (110) and a radio client node (120) and methods performed on the radio server node (110) and the radio client node (120) for receiving and transmitting. signals in a wireless communication network (100). radio server node (110) determines a receive time-space scan pattern for radio server node (110). radio client node (120) determines a transmission time-space pattern based on a predefined rule. radio server node 110 receives signals from radio client node 120 based on the receive time-space scan pattern. The signals are transmitted by the radio client node 120 according to the determined transmission time-space pattern.
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