US 11,838,964 B2
Method and apparatus for RRC connection establishment to support UE-to-network relaying in a wireless communication system
Richard Lee-Chee Kuo, Taipei (TW)
Assigned to ASUSTek Computer Inc., Taipei (TW)
Filed by ASUSTek Computer Inc., Taipei (TW)
Filed on Oct. 12, 2022, as Appl. No. 17/964,660.
Claims priority of provisional application 63/276,825, filed on Nov. 8, 2021.
Prior Publication US 2023/0148166 A1, May 11, 2023
Int. Cl. H04W 76/14 (2018.01); H04W 76/34 (2018.01); H04W 76/18 (2018.01); H04W 40/22 (2009.01); H04W 88/04 (2009.01); H04W 76/30 (2018.01)
CPC H04W 76/14 (2018.02) [H04W 40/22 (2013.01); H04W 76/18 (2018.02); H04W 76/30 (2018.02); H04W 76/34 (2018.02); H04W 88/04 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for Radio Resource Control (RRC) connection establishment to support User Equipment (UE)-to-Network relaying, comprising:
a relay UE establishes a Layer-2 link with a remote UE, wherein the relay UE is a Layer-2 UE-to-Network relay;
the relay UE receives a RRC message from the remote UE;
the relay UE initiates a RRC connection establishment with a network node in response to reception of the RRC message and starts a timer;
the relay UE determines a failure of the RRC connection establishment based on reception of a RRC Reject message from the network node during the RRC connection establishment or upon expiration of the timer;
in response to determining the failure of the RRC connection establishment, the relay UE initiates a Layer-2 link release procedure and transmits a Disconnect Request message to the remote UE;
the relay UE receives a Disconnect Response message from the remote UE; and
the relay UE releases the Layer-2 link in response to reception of the Disconnect Response message.