US 11,818,568 B2
Reference signal management for sidelink radio transmission
Shehzad Ali Ashraf, Aachen (DE); Ricardo Blasco Serrano, Espoo (FI); and Wanlu Sun, Solna (SE)
Assigned to Telefonaktiebolaget LM Ericsson (Publ), Stockholm (SE)
Appl. No. 17/264,964
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Aug. 3, 2018, PCT No. PCT/EP2018/071175
§ 371(c)(1), (2) Date Feb. 1, 2021,
PCT Pub. No. WO2020/025147, PCT Pub. Date Feb. 6, 2020.
Prior Publication US 2021/0314962 A1, Oct. 7, 2021
Int. Cl. H04W 72/02 (2009.01); H04W 72/542 (2023.01); H04W 72/20 (2023.01); H04W 72/541 (2023.01)
CPC H04W 72/542 (2023.01) [H04W 72/02 (2013.01); H04W 72/20 (2023.01); H04W 72/541 (2023.01)] 20 Claims
OG exemplary drawing
 
1. A method of controlling sidelink communication in a wireless communication network, the method comprising:
a radio device receiving sidelink control information from a further radio device, the sidelink control information indicating at least one radio resource for transmission of a reference signal from the further radio device;
the radio device receiving the reference signal on the at least one radio resource indicated by the sidelink control information;
based on the received reference signal, the radio device estimating quality of a radio channel between the radio device and the further radio device;
at least one of:
(A) based on the estimated quality of the radio channel, the radio device controlling a sidelink radio transmission from the radio device to the further radio device; and
(B) the radio device sending a report of the estimated quality of the radio channel to the further radio device;
the radio device 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 by at least one other radio device; and
the radio device configuring a time interval between an instance of transmission of the reference signals by the radio device and a subsequent instance of transmission of the sidelink radio transmissions by the radio device 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 and a subsequent instance of transmission of the sidelink radio transmissions by the at least one other radio device.