Aspects of the present disclosure provide apparatus, methods, processing systems, and computer readable mediums for a nested conditional mobility procedure. In some cases, a method for wireless communications by a UE generally includes receiving configuration information configuring the UE for conditional handover (CHO) from a source master node (S-MN) to a target master node (T-MN) and for conditional primary secondary cell (PSCell) addition or change (CPAC) and performing a nested procedure based on an evaluation of conditions for both CHO and CPAAC in accordance with the configuration information.

The embodiments of the present invention relate to apparatuses and methods for resource management in a multi-carrier system wherein a plurality of component carriers (CCs) is defined per cell. According to a method in an apparatus corresponding to a radio base station, a message is assembled comprising information on the structure of the cell served by the radio base station; the information including one or more CCs used in the cell that is/are available for a user equipment for performing initial access in the cell. The method also comprises, transmitting the assembled message to the user equipment and indicating to the user equipment to what resources to use for random access in the cell. The exemplary embodiments of the present invention also relates to a method in the user equipment, to a radio base station and to a user equipment.

A base station includes a receiving unit that receives terminal capability from a terminal before a security procedure, and a control unit that eliminates the terminal capability acquired before the security procedure in response to a release of a terminal context related to the terminal.

A condition handover cancellation method and a communication equipment are provided. A CHO cancellation method applied to a source network side device includes: sending a CHO request to at least one target network side device; and sending a CHO cancellation message to the target network side device and/or a terminal side device.

An embodiment of the present disclosure relates to a handover method between network devices and a terminal device. The method includes receiving, by a terminal device, at least one handover command corresponding to a plurality of target network devices, the at least one handover command corresponding to the plurality of target network devices including a first handover command, and the first handover command including configuration information of a first target network among the plurality of target network devices; if the terminal device determines to establish a connection with the first target network device according to the first handover command, starting, by the terminal device, a first access timer corresponding to the first target network device; and establishing, by the terminal device, a connection with the first target network device according to the first access timer.

Systems and methods of handing over a wireless device 300 are provided. In one exemplary embodiment, a method performed by a source base station 100 of handing over a wireless device 300 from the source base station 100 to a target base station 200 may include determining that a wireless device 300 is to be handed over from the source base station 100 to the target base station 200. Further, the method may include sending, to the target base station 200, a current mapping between one or more flow identifiers and a first set of data radio bearers used for communication between the wireless device 300 and the source base station 100.

The present disclosure relates to a 5th generation (5G) or pre-5G communication system for supporting a higher data transfer rate beyond a 4th generation (4G) communication system, such as long-term evolution (LTE). According to various embodiments of the present disclosure, a security method of a mobility management apparatus of a second system in a wireless environment may comprise the steps of: receiving a handover request for a terminal connected to a first system; transmitting the handover request to a base station of the second system; and receiving a handover ACK including security information generated by the base station of the second system and transmitting the same to the first system.

Apparatuses, methods, and systems are disclosed for discarding data corresponding to a conditional handover. One apparatus includes a transmitter that transmits information corresponding to a conditional handover to multiple candidate cells. The information indicates to one or more candidate cells of the multiple candidate cells a time to discard data or to discard the data.

A system for converging fifth generation (5G) communication systems for supporting higher data rates beyond fourth generation (4G) systems with a technology for Internet of things (IoT) is provided. The communication method and system may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A system is provided for determining system information validity by acquiring and storing a first system information block and other system information, including information on a public land mobile network (PLMN) identity and a value tag, and determining whether the stored system information is valid for the cell. As another example, a terminal and base station are provided for performing beam failure detection and a recovery procedure using first and second configuration information for beam failure recovery (BFR) and if failure is detected, initiating a first random access (RA) procedure and if second configuration information is received while the first RA procedure is ongoing, terminating the first RA procedure and initiating a second RA procedure based on the second configuration information.

A method and an apparatus for supporting multiple frequency assignments in a wireless communication system are provided. An operating method of a Mobile Station (MS) for supporting multicarrier transmission in a wireless communication system includes negotiating a multicarrier operation with a Base Station (BS) during a network entry procedure, when supporting a multicarrier operation mode with the BS, sending a first control message comprising information of every multicarrier configuration supported by the MS, to the BS, receiving a second control message comprising index information of one or more carriers assigned for the multicarrier operation from the BS, and searching for configuration information of carriers corresponding to indexes of the one or more carriers assigned from the BS for the multicarrier operation.