A method of handling multi-access (MA) Protocol data unit (PDU) session establishment procedure for adding a 3GPP PDN leg to an MA PDU session already established with a non-3GPP leg is proposed. In one novel aspect, for a 5GS MA PDU session already established on non-3GPP access, upon receipt of an ACTIVATE DEFAULT EPS BEARER CONTEXT REQUEST message for establishing a PDN connection as a user-plane resource for the MA PDU session over 3GPP access, the UE sends an ACTIVATE DEFAULT EPS BEARER CONTEXT REJECT message if any value of at least one of the critical parameters, including the PDN type, ESM cause, PDN address, S-NSSAI, SSC mode (set to SSC mode 1), and APN IEs in the ACTIVATE DEFAULT EPS BEARER CONTEXT REQUEST message does not match/sync/compatible to the corresponding stored value of the MA PDU session with a non-3GPP leg.

Embodiments of the present disclosure provide a wireless communication method, a terminal device, and a network device. The terminal device can report an occurrence of RLF in a source cell in a DAPS handover process, such that the network device can optimize a threshold corresponding to a measurement event in a measurement configuration. The wireless communication method includes: transmitting, by a terminal device, first indication information to a network device. The first indication information indicates that an RLF occurs between the terminal device and a source cell in a handover process of the terminal device from the source cell to a target cell using a DAPS handover scheme. The network device is a network device of the target cell, a network device of a cell for reestablishment after the DAPS handover fails, or a network device of the source cell.

A method of quality of experience (QoE) measurement and reporting includes transmitting, by a user equipment (UE) to a first base station (BS): one or more first QoE measurement reports associated with a first QoE configuration and one or more second QoE measurement reports associated with a second QoE configuration; performing a dual active protocol stack (DAPS) handover, from the first BS to a second BS, in response to receiving a handover command. The handover command indicates that the second BS supports the first QoE configuration and does not support the second QoE configuration. Until successful completion of a random access process to the second BS, the DAPS handover includes: transmitting, to the first BS, one or more third QoE measurement reports associated with the first QoE configuration and not transmitting, to the first BS, a QoE measurement report associated with the second QoE configuration.

An operation method of a first base station in a communication system may comprise: identifying whether a first terminal supports a dual active protocol stack (DAPS); identifying whether a first relay terminal supports a layer 2 (L2) relay structure; and in response to identifying that the first terminal supports the DAPS and the first relay terminal supports the L2 relay structure, configuring dual connectivity for the first terminal using the first relay terminal.

Disclosed are a method for transmitting and receiving signals in a wireless communication system, and an apparatus supporting the method, wherein dual active protocol stack-based handover (DAPS HO) operation is carried out, and, on the basis of transmission, to a target master cell group, of a message comprising a physical random access channel (PRACH) and a physical uplink shared channel (PUSCH), an uplink signal different from the message is not transmitted to a source MCG in a first time period that overlaps with a second time period in which PRACH and PUSCH were transmitted.

Provided are a method for operating an IAB node connected to a plurality of parent nodes in a wireless communication system, and an apparatus using the method. The method comprises: monitoring all pieces of AI-DCI respectively received from the plurality of parent nodes; and determining whether or not a soft resource is available to a DU of the IAB node, in consideration of all results of the monitoring.

An information transmission method includes receiving capability enquiry signaling from a network device. The method also includes sending capability information of a terminal to the network device. The capability information includes a first capability item and dual active protocol stack (DAPS) capability information supported by the terminal and corresponding to the first capability item, or the capability information includes the first capability item and the DAPS capability information supported by the terminal and corresponding to the first capability item, and a second capability item and carrier aggregation (CA) capability information supported by the terminal and corresponding to the second capability item.

Embodiments of this application disclose a logical channel (LCH) configuration method. In the method, a first data radio bearer (DRB) of a terminal corresponds to a first LCH, and the first LCH is for transmitting packet data convergence protocol (PDCP) data corresponding to a source donor node. The method includes: A first relay node generates configuration information of a second LCH corresponding to the first DRB, where the second LCH is for transmitting PDCP data corresponding to a target donor node; and the first relay node sends the configuration information of the second LCH to the terminal. The source donor node and the target donor node are respectively a source donor node and a target donor node during first relay node handover or second relay node handover. A second relay node is a relay node on a link between the first relay node and the source donor node.

A method for processing information, a terminal device, a chip, a computer-readable storage medium, a computer program product and a computer program are provided. The method includes: transmitting (21), by the terminal device, a msg3 without carrying a first type of content, during a process of performing a first type of handover by the terminal device. The first type of content includes data transmitted on a first type of channel.

Provided in the present invention is a method performed by user equipment (UE), including: when the UE undergoes a dual active protocol stack (DAPS) handover failure during a DAPS handover, if no source base station radio link failure (RLF) is detected, the UE falling back to a source base station link, without generating and storing handover failure information for the DAPS handover failure in a link failure report; and if the UE, when falling back to the source base station link, detects a source base station RLF, the UE recording and storing link failure information for the source base station RLF in the link failure report.