The present application is related to a method of failure handling in conditional handover. A method performed by a user equipment (UE) comprises: receiving a Conditional Handover (CHO) configuration; initiating a re-establishment procedure if one of a plurality first conditions is met; performing a cell selection procedure; performing a CHO procedure if a cell selected through the cell selection procedure is configured with the CHO configuration; and performing the re-establishment procedure if the selected cell is not configured with the CHO configuration.

A method for handling a handover of a communication device includes receiving a radio resource control (RRC) configuration message from a source network, wherein the RRC configuration message includes at least one execution condition of at least one target network; transmitting a handover trigger message to the source network, when an execution condition of the at least one execution condition is satisfied; performing the handover from the source network to a target network of the at least one target network, wherein the target network is corresponding to the execution condition; and transmitting a handover complete message to the target network, after performing the handover.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a measurement configuration for a service interruption measurement regarding a handover of the UE from a source cell to a target cell. The UE may transmit measurement information that identifies at least one of the service interruption measurement or a time value used to determine the service interruption measurement. Numerous other aspects are provided.

An operating method of a user equipment (UE) in a wireless communication system according to an embodiment of the disclosure may include receiving configuration information from a source base station (BS), determining, based on the configuration information, whether Dual Active Protocol Stack (DAPS) handover is configured for at least one bearer, based on a result of the determining, maintaining a link to the source BS, performing the DAPS handover on a target BS, suspending a Signaling Radio Bearer (SRB) configured for the source BS, and establishing a SRB for the target BS, when it is determined that the DAPS handover fails, determining whether a radio link failure (RLF) occurs in the link to the source BS, and based on a result of the determining, when the RLF does not occur in the link to the source BS, resuming the SRB configured for the source BS and reporting the failure of the DAPS handover.

The present disclosure relates to a communication technique for merging IoT technology with a 5G communication system for supporting higher data transmission rates than 4G systems, and a system therefor. The present disclosure may be applied to intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail business, security and safety-related services, etc.) on the basis of 5G communication technology and IoT-related technology. In addition, the present disclosure relates to a method for adding or changing a cell, and a device for performing same.

A flexible solution for handling WiFi to cellular (W2C) handover (e.g., for voice over WiFi (VoWiFi) or video calls) includes: determining, for a wireless network, at least one live conversation performance indicator; based on the at least one live conversation performance indicator, determining at least one W2C handover parameter of a set of W2C handover parameters, the set of W2C handover parameters including a first W2C handover parameter indicating a first trigger condition and a second W2C handover parameter indicating a second trigger condition; and transmitting, by the wireless network, to a user equipment (UE), the at least one W2C handover parameter. In some examples, the W2C handover parameters include a reference signal receive power (RSRP) threshold and/or a received signal strength indication (RSSI) threshold. In some examples, live conversation performance indicators may include a cellular call drop rate, a WiFi call drop rate, and a handover failure rate.

Embodiments of the present application provide a resource processing method and apparatus, a device, and a storage medium, where the method includes: when a terminal device accesses a network, generating first information including a handover report, and sending the first information, correspondingly, a source network device can receive at least one piece of first information sent by at least one terminal, and each piece of first information includes: a handover report of a corresponding terminal device. Therefore, the source network device can adjust, according to the handover report of the at least one terminal device, a reserved resource allocated by the network device, which further adjusts the coverage and the size of the resource pool reserved for the terminal device in conditional handover, which improves the matching degree between the reserved resources allocated tar the terminal device and the terminal device, solves the problem of resource waste or resource shortage.

A user equipment (UE) and a method for sidelink failure management are provided. The method includes receiving, from a source cell, a first message including a sidelink Radio Resource Control (RRC) configuration associated with a target cell; determining that a sidelink failure event associated with an associated sidelink destination UE occurs; and transmitting a sidelink failure report indicating the sidelink failure event to the target cell after performing a handover procedure to switch from the source cell to the target cell.

A method and apparatus for providing beam related information for connection failure detection in a wireless communication system is provided. In case that radio link failure (RLF) occurs due to too late handover, too early handover or handover to wrong cell, a gNB in which a user equipment (UE) attempts to re-establish or establish a radio resource control (RRC) connection provides RLF related information with beam related information to a gNB at which RLF happened.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may establish a first connection with a source base station. The UE may determine that a handover procedure is being performed for establishing a second connection with a target base station. The UE may monitor, during a monitoring period instantiated at a physical layer of a protocol stack of the UE, for a control signal acknowledging success of the handover procedure from a target base station. The UE may transmit, based at least in part on a result of the monitoring during the monitoring period, a physical layer signal or a medium access control layer signal to the source base station indicating that the handover procedure was unsuccessful based at least in part on a failure to successfully receive and decode the control signal.