US 12,041,526 B2
Layer 2 UE to UE data forwarding
Zhibin Wu, Cupertino, CA (US); Chunxuan Ye, San Diego, CA (US); Dawei Zhang, Cupertino, CA (US); Fangli Xu, Beijing (CN); Haijing Hu, Cupertino, CA (US); Haitong Sun, Cupertino, CA (US); Wei Zeng, Cupertino, CA (US); and Yuqin Chen, Beijing (CN)
Assigned to APPLE INC., Cupertino, CA (US)
Appl. No. 17/593,600
Filed by APPLE INC., Cupertino, CA (US)
PCT Filed Oct. 22, 2020, PCT No. PCT/CN2020/122867
§ 371(c)(1), (2) Date Sep. 21, 2021,
PCT Pub. No. WO2022/082612, PCT Pub. Date Apr. 28, 2022.
Prior Publication US 2022/0303862 A1, Sep. 22, 2022
Int. Cl. H04W 40/00 (2009.01); H04L 45/00 (2022.01); H04W 40/02 (2009.01); H04W 76/11 (2018.01); H04W 88/04 (2009.01)
CPC H04W 40/02 (2013.01) [H04L 45/66 (2013.01); H04W 76/11 (2018.02); H04W 88/04 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method of a relay user equipment (UE), comprising:
receiving, from a first remote UE, a data packet comprising a radio link control (RLC) protocol data unit (PDU) comprising a packet data convergence protocol (PDCP) PDU and a first adaptation header having first routing information;
decoding the first routing information from the first adaptation header at an adaptation layer of the relay UE that is between an RLC layer of the UE and a PDCP layer of the UE;
determining, based on the first routing information, that the PDCP PDU should be forwarded to a second remote UE;
generating a second packet comprising the PDCP PDU; and
forwarding the second packet to the second remote UE.