ASUS Technology Licensing Inc.

A method and device for a first User Equipment (UE) are disclosed. In one embodiment, the first UE establishes a PC5 connection with a second UE for supporting a UE-to-UE (U2U) relay communication. The first UE also sends to the second UE a message to trigger a negotiated relay reselection, wherein the message includes a relay reselection indication information element (IE) and a link modification operation code IE set to a specific value.

Methods, systems, and apparatuses are provided for relay User Equipment (UE) supporting candidate UE-to-UE (U2U) relay discovery, wherein a method for a relay UE comprises receiving, from a target end UE, a discovery solicitation message for candidate U2U relay discovery, and determining to transmit a discovery response message to the target end UE, in response to reception of the discovery solicitation message for candidate U2U relay discovery, wherein the discovery response message indicates the discovery response message being used for candidate U2U relay discovery by at least setting an application layer Identification (ID) indicated in the discovery response message to a specific value.

Methods, systems, and apparatuses are provided for Artificial Intelligence/Machine Learning (AI/ML) assisted mobility in a wireless communication system, wherein a method of a User Equipment (UE) comprises triggering a measurement report, and including multiple measurement results, at multiple time instances for a cell, in a measurement report, wherein the multiple time instances comprise one or more of: (i) time instances configured by a Network (NW); and (ii) time instances within a time window configured by the NW.

A method and device for a Layer-2 (L2) UE-to-Network (U2N) Relay User Equipment (UE) are disclosed. In one embodiment, the L2 U2N Relay UE establishes a PC5 connection with an Intermediate U2N Relay UE and establishes a Radio Resource Control (RRC) connection with a network node. The L2 U2N Relay UE also receives a RRC Reconfiguration message from the network node, wherein the RRC Reconfiguration message includes a local identity (ID) of a Remote UE and also includes a L2 ID of the Intermediate U2N Relay UE to associate with the local ID of the Remote UE. Furthermore, the L2 U2N Relay UE receives a Uu Sidelink Relay Adaptation Protocol (SRAP) Protocol Data Unit (PDU) from the network node, wherein the Uu SRAP PDU includes a first header and a data packet and wherein the first header includes a UE ID.

Methods, systems, and apparatuses are provided for a User Equipment (UE) in a wireless communication system receiving, from a network, a first signaling indicative of cell configuration of a cell, receiving, from the network, a second signaling indicative of switching a Special Cell (SpCell) of the UE to the cell or adding the cell as a serving cell, receiving, from the network, a third signaling indicative of a first time alignment information associated with the first Timing Advance Group (TAG), and in response to the second signaling: (1) switching the SpCell of the UE to the cell or adding the cell as the serving cell, (2) applying the first time alignment information on the first TAG, and (3) initiating a random access procedure on the cell when no time alignment information associated with the second TAG is in the third signaling.

Methods, systems, and apparatuses are provided for sending notification messages in multi-hop User Equipment (UE)-to-network (U2N) relay communications by intermediate relays in a wireless communication system, wherein a method comprises establishing a first PC5 connection with a remote UE for supporting a U2N relay communication between the remote UE and a network via the first relay UE and a second relay UE, establishing a second PC5 connection with the second relay UE for supporting the U2N relay communication, wherein the first relay UE is served by a first cell, detecting a PC5 Radio Link Failure (RLF) on the second PC5 connection or receiving a notification message indicating RLF of a Uu link from the second relay UE, performing a Radio Resource Control (RRC) connection re-establishment procedure to the network, omitting a transmission of a PC5-RRC message or not transmitting the PC5-RRC message to the remote UE if at least the first relay UE keeps being served by the first cell or a serving cell of the remote UE is still the first cell after completing the RRC connection re-establishment procedure, wherein the PC5-RRC message includes information indicating the PC5 RLF or a relay path failure, and transmitting the PC5-RRC message to the remote UE if at least the first relay UE changes to being served by a second cell or the serving cell of the remote UE is changed after completing the RRC connection re-establishment procedure.

A method and apparatus are disclosed. In an example from the perspective of a first User Equipment (UE), the first UE determines a first priority value associated with a first Sidelink (SL) transmission to a second UE. The first UE determines a second priority value associated with a Scheduling Request (SR) transmission to a network node based upon one or more priority values associated with one or more second SL transmissions associated with a SL resource request based upon which the SR transmission is triggered. The first UE selects, from among a plurality of transmissions including the first SL transmission and the SR transmission, one of the first SL transmission or the SR transmission based upon the first priority value and the second priority value. The first UE performs the selected transmission.

A method and apparatus are disclosed. In an example from the perspective of a first User Equipment (UE), the first UE determines a first priority value associated with a first Sidelink (SL) transmission to a second UE. The first UE determines a second priority value associated with a Scheduling Request (SR) transmission to a network node based upon one or more priority values associated with one or more second SL transmissions associated with a SL resource request based upon which the SR transmission is triggered. The first UE selects, from among a plurality of transmissions including the first SL transmission and the SR transmission, one of the first SL transmission or the SR transmission based upon the first priority value and the second priority value. The first UE performs the selected transmission.

A method and device for a relay User Equipment (UE) are disclosed. In one embodiment, the relay UE establishes a first UE-to-UE (U2U) relay communication between a source end UE and a first target end UE and a second U2U relay communication between the source end UE and a second target end UE. The relay UE also sends a PC5 Radio Resource Control (RRC) message to the source end UE, wherein the PC5 RRC message includes a list information indicating at least one of a first mapping of a first local UE Identity (ID) and a first layer-2 ID for the first target end UE and a second mapping of a second local UE ID and a second layer-2 ID for the second target end UE.

A method and device for a first User Equipment (UE) are disclosed. In one embodiment, the first UE establishes a PC5 connection with a second UE for supporting a UE-to-UE (U2U) relay communication. The first UE also sends to the second UE a message to trigger a negotiated relay reselection, wherein the message includes a relay reselection indication information element (IE) and a link modification operation code IE set to a specific value.