CPC H04L 5/0053 (2013.01) [H04B 7/08 (2013.01); H04L 5/0023 (2013.01); H04L 5/0048 (2013.01); H04L 5/0094 (2013.01); H04W 72/23 (2023.01)] | 28 Claims |
1. A method for a UE in a multiple transmission points communication system, mTRP, the method comprising:
receiving a higher layer configuration of a mTRP scheme;
receiving downlink control information, DCI, indicating a first Transmission Configuration Indicator, TCI, state and a second TCI state in one Code Division Multiplexing, CDM, group for a scheduled data transmission on physical resource blocks, PRBs, wherein the PRBs comprise at least a first subset of PRBs, associated with the first TCI state, and a second subset of PRBs, associated with the second TCI state; and
determining a first Phase Tracking Reference Signal, PT-RS, frequency density for a PT-RS port in the first subset of PRBs based on a number of PRBs in the first subset of PRBs and a second PT-RS frequency density for the same PT-RS port in the second subset of PRBs based on a number of PRBs in the second subset of PRBs.
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