| CPC H04W 8/24 (2013.01) [H04W 28/0252 (2013.01); H04W 28/0268 (2013.01); H04W 88/04 (2013.01)] | 18 Claims |

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1. A method for a second User Equipment (UE) to report sidelink capability information, comprising:
receiving, from a UE-to-UE Relay, both a first sidelink UE capability information of a first UE and a second sidelink UE capability information of the UE-to-UE Relay, wherein the second sidelink UE capability information includes at least one sidelink radio link control (RLC) parameter, and wherein the at least one sidelink RLC parameter includes a parameter of am-WithLongSN-Sidelink or um-WithLongSN-Sidelink;
transmitting both the first sidelink UE capability information of the first UE and the second sidelink UE capability information of the UE-to-UE Relay to a network node via a Sidelink UE Information message; and
transmitting data to the first UE via the UE-to-UE Relay.
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