A method of controlling sidelink communication in a wireless communication network, the method comprising: a radio device (30; 1000; 2100) receiving sidelink control information (301; 401) from a further radio device (20; 1200; 2100), the sidelink control information (301; 401) indicating at least one radio resource for transmission of a reference signal (304; 404) from the further radio device (20; 1200; 2100); the radio device (30; 1000; 2100) receiving the reference signal (304; 404) on the at least one radio resource indicated by the sidelink control information (301; 401); based on the received reference signal (304; 404), the radio device estimating quality of a radio channel between the radio device (30; 1000; 2100) and the further radio device (20; 1200; 2100); and based on the estimated quality of the radio channel, the radio device (30; 1000; 2100) controlling a sidelink radio transmission from the radio device (30; 1000; 2100) to the further radio device (20; 1200; 2100), wherein controlling sidelink radio transmission comprises sending sidelink radio transmissions and reference signals on at least one radio resource which is further being utilized for sidelink radio transmissions and transmissions of reference signals (304; 404) by at least one other radio device (20, 40; 1200; 2100); and configuring a time interval between an instance of transmission of the reference signals by the radio device (30; 1000; 2100) and a subsequent instance of transmission of the sidelink radio transmissions by the radio device (30; 1000; 2100) to be the same as a time interval between an instance of transmission of the reference signals by the at least one other radio device (20, 40; 1200; 2100) and a subsequent instance of transmission of the sidelink radio transmissions by the at least one other radio device (20, 40; 1200; 2100). a radio device (30; 1000; 2100) receiving sidelink control information (301; 401) from a further radio device (20; 1200; 2100), the sidelink control information (301; 401) indicating at least one radio resource for transmission of a reference signal (304; 404) from the further radio device (20; 1200; 2100); the radio device (30; 1000; 2100) receiving the reference signal (304; 404) on the at least one radio resource indicated by the sidelink control information (301; 401); based on the received reference signal (304; 404), the radio device estimating quality of a radio channel between the radio device (30; 1000; 2100) and the further radio device (20; 1200; 2100); and based on the estimated quality of the radio channel, the radio device (30; 1000; 2100) controlling a sidelink radio transmission from the radio device (30; 1000; 2100) to the further radio device (20; 1200; 2100), wherein controlling sidelink radio transmission comprises sending sidelink radio transmissions and reference signals on at least one radio resource which is further being utilized for sidelink radio transmissions and transmissions of reference signals (304; 404) by at least one other radio device (20, 40; 1200; 2100); and configuring a time interval between an instance of transmission of the reference signals by the radio device (30; 1000; 2100) and a subsequent instance of transmission of the sidelink radio transmissions by the radio device (30; 1000; 2100) to be the same as a time interval between an instance of transmission of the reference signals by the at least one other radio device (20, 40; 1200; 2100) and a subsequent instance of transmission of the sidelink radio transmissions by the at least one other radio device (20, 40; 1200; 2100). <EOS>