First transmission power can be determined (1110) for a first PRACH preamble in a 2-step random access procedure based on a first set of power control parameters. The first PRACH preamble can be transmitted (1120) in the 2-step random access procedure based on the first transmission power. A determination can be made (1130) to switch from the 2-step random access procedure to a 4-step random access procedure. Second transmission power can be determined (1140) based on the first set of power control parameters and a second set of power control parameters for a subsequent second PRACH preamble transmission for the 4-step random access procedure. The subsequent second PRACH preamble can be transmitted (1150) in the 4-step random access procedure based on the second transmission power.

The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure 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. Accordingly, the embodiments herein provide a method for Management data analytic service (MDAS) server (100) assisted handover optimization in a wireless network (1000). The method includes periodically collecting data from a plurality of target gNBs in the wireless network (1000), and generating an analytical report for each target gNB (300) of the plurality of target gNBs based on the collected data. Further, the method includes receiving a request for the analytical report of the at least one target gNB (300) for handover from a source gNB (200), sending the analytical report to the source gNB (200). Further, the includes performing at least one corrective action suggested by the analytical report to optimize at least one target gNB (300) for handover.

The terminal device (50) includes a communication unit (51) and a control unit (55). The control unit (55) transmits or receives predetermined data a predetermined number of times via the communication unit (51). In addition, the control unit (55) transmits or receives predetermined data a predetermined number of times in cooperation with other terminal devices.

The terminal device (50) includes a communication unit (51) and a control unit (55). The control unit (55) transmits or receives predetermined data a predetermined number of times via the communication unit (51). In addition, the control unit (55) transmits or receives predetermined data a predetermined number of times in cooperation with other terminal devices.

A control device communicates with a mobile station installed in a train, existing in a base station zone as a reception area of a signal transmitted from a base station and traveling on a railroad, via the base station. The control device includes an acquisition unit that acquires branch information indicating that a branch point on the railroad exists in the base station zone and information indicating base stations existing one base station ahead of the base station and a control unit that transmits the same voice signal to the base station and the base stations when existence of the branch point in the base station zone is detected based on the branch information.

A control device communicates with a mobile station installed in a train, existing in a base station zone as a reception area of a signal transmitted from a base station and traveling on a railroad, via the base station. The control device includes an acquisition unit that acquires branch information indicating that a branch point on the railroad exists in the base station zone and information indicating base stations existing one base station ahead of the base station and a control unit that transmits the same voice signal to the base station and the base stations when existence of the branch point in the base station zone is detected based on the branch information.

Embodiments of the present application provide a non terrestrial communication network NTN handover method, a device, and a storage medium; and the method includes: a terminal device measuring channel measurement parameters and location measurement parameters of a current serving cell and at least one first adjacent cell; the terminal device sending the measurement results of the current serving cell and at least one second adjacent cell to a network device; where the second adjacent cell is an adjacent cell which satisfies a measurement reporting condition; where the measurement results are configured to instruct the network device to determine a target cell to be handed over for the terminal device; and the terminal device performs handover according to a handover command received, where the handover command is configured to instruct the terminal device to perform handover from the current serving cell to the target cell.

Described are examples for providing cell level migration of physical layer processing in a virtualized base station. A system for operating virtualized base stations includes a plurality of physical layer (PHY) servers within a datacenter and a media access control (MAC) server. Each respective PHY server includes: a memory storing instructions and at least one processor coupled to the memory. The at least one processor is configured to perform physical layer radio access network processing for a cell at the respective PHY server. The MAC server includes a memory storing instructions and at least one processor coupled to the memory. The at least one processor is configured to migrate the physical layer radio access network processing for the cell from a first server of the plurality of PHY servers to a second server of the plurality of PHY servers within the datacenter at an inter-slot boundary.

The present disclosure relates to a target cell selection for mobility. According to an embodiment of the present disclosure, a user equipment (UE) may apply an adjustment value to a mobility metric of a cell to obtain an effective mobility metric of the cell. The adjustment value may be related to a remaining service time for one or more cells. The UE may perform a mobility based on the effective mobility metric of the cell.

The present disclosure relates to a target cell selection for mobility. According to an embodiment of the present disclosure, a user equipment (UE) may apply an adjustment value to a mobility metric of a cell to obtain an effective mobility metric of the cell. The adjustment value may be related to a remaining service time for one or more cells. The UE may perform a mobility based on the effective mobility metric of the cell.