US 12,218,874 B2
Configuring and using device-to-device demodulation reference signal (DMRS)
Haitong Sun, Cupertino, CA (US); Chunxuan Ye, Cupertino, CA (US); Dawei Zhang, Cupertino, CA (US); Haijing Hu, Cupertino, CA (US); Wei Zeng, Cupertino, CA (US); Yushu Zhang, Beijing (CN); and Zhibin Wu, Cupertino, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Appl. No. 17/442,048
Filed by Apple Inc., Cupertino, CA (US)
PCT Filed Jun. 25, 2021, PCT No. PCT/CN2021/102436
§ 371(c)(1), (2) Date Sep. 22, 2021,
PCT Pub. No. WO2022/267023, PCT Pub. Date Dec. 29, 2022.
Prior Publication US 2024/0031095 A1, Jan. 25, 2024
Int. Cl. H04L 5/00 (2006.01); H04L 25/02 (2006.01)
CPC H04L 5/0051 (2013.01) [H04L 25/0224 (2013.01)] 20 Claims
OG exemplary drawing
 
1. One or more non-transitory computer-readable storage media storing instructions, that upon execution, cause operations comprising:
sending, to a network node, capability information indicating whether maintaining phase continuity upon a duplex direction change is supported;
determining a configuration of demodulation reference signals (DMRSs) for a physical channel, the configuration indicating that a first DMRS received in a first slot can be bundled with a second DMRS received in a second slot for a channel estimation for demodulation of the physical channel, the configuration being based on the capability information;
processing the DMRSs based on the configuration, the first DMRS received in the first slot and the second DMRS received in the second slot;
determining a DMRS measurement based on a first measurement on the first DMRS and a second measurement on the second DMRS; and
performing, based on the DMRS measurement, the channel estimation.