3 GPP TSG RAN WG 190 Prague Czech

3 GPP TSG RAN WG 1#90 Prague, Czech Republic, 21 st – 25 th August 2017 R 1 -171 xxxx Agenda item: 6. 1. 1 Document for decision WF on QCL parameters for SS block transmissions Samsung, …

Background RAN 1#NR-AH 1 agreements • UE may assume that a given SS/PBCH block is repeated with a SS burst set periodicity • By default, the UE may neither assume the g. NB transmits the same number of physical beam(s), nor the same physical beam(s) across different SS-blocks within an SS burst set. Section 4. 1 of TS 38. 213 • A UE may not assume that antenna ports used for transmissions of SS/PBCH blocks with different indexes within a same half frame are quasicollocated with respect to […]. A UE may assume that antenna ports used for transmissions of SS/PBCH blocks with same index in different half frames are quasi-collocated with respect to […].

Proposal • A UE may assume that antenna ports used for transmissions of SS/PBCH blocks with same index in different half frames recurring with the SS/PBCH block periodicity are quasi-collocated with respect to spatial, average gain and delay parameters. • By default, a UE may not assume that antenna ports used for transmissions of SS/PBCH blocks with different indexes within a same half frame are quasicollocated with respect to spatial, average gain, delay and Doppler parameters.