US 12,244,547 B2
Half duplex frequency division duplex for new radio
Hong He, San Jose, CA (US); Chunxuan Ye, San Diego, CA (US); Dawei Zhang, Saratoga, CA (US); Haitong Sun, Cupertino, CA (US); Huaning Niu, San Jose, CA (US); Jie Cui, San Jose, CA (US); Oghenekome Oteri, San Diego, CA (US); Seyed Ali Akbar Fakoorian, San Diego, CA (US); Wei Zeng, Saratoga, CA (US); and Yushu Zhang, Beijing (CN)
Assigned to Apple Inc., Cupertino, CA (US)
Appl. No. 17/593,331
Filed by Apple Inc., Cupertino, CA (US)
PCT Filed Jan. 14, 2021, PCT No. PCT/CN2021/071907
§ 371(c)(1), (2) Date Sep. 15, 2021,
PCT Pub. No. WO2022/151253, PCT Pub. Date Jul. 21, 2022.
Prior Publication US 2023/0179391 A1, Jun. 8, 2023
Int. Cl. H04L 27/26 (2006.01); H04L 5/16 (2006.01); H04W 28/02 (2009.01); H04W 52/14 (2009.01); H04L 12/413 (2006.01); H04W 74/0833 (2024.01)
CPC H04L 5/16 (2013.01) [H04L 27/2666 (2013.01); H04W 28/0284 (2013.01); H04W 28/0289 (2013.01); H04W 52/14 (2013.01); H04L 12/413 (2013.01); H04W 74/0833 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A processor of a user equipment (UE) configured to perform operations comprising:
determining that half-duplex (HD) frequency division duplex (FDD) is enabled by a fifth generation (5G) new radio (NR) network with which the UE is communicating, wherein a guard period is configured for downlink and uplink switching when the HD FDD is enabled;
performing a first uplink transmission at a first time to a base station of the 5G NR network;
performing a first downlink reception at a second time to the base station of the 5G NR network, wherein the guard period represents a time duration between the first time and the second time during which the UE is not to perform a second different uplink transmission or a second different downlink reception with the base station of the 5G NR network; and
initiating a guard period reconfiguration procedure, wherein initiating the guard period reconfiguration procedure includes deriving a second guard period and transmitting an indication of the second guard period to the base station of the 5G NR network using a dedicated physical random access channel (PRACH) resource.