A cell handover or reselection method, performed by a terminal, including: determining measurement information of a satellite cell based on relative location information between a terminal and a satellite.

A method and an apparatus for determining handover configuration, and a communication device are provided. The method includes: on the basis of handover configuration information of a target service satellite associated with a cell handover, user equipment (UE) determines handover configuration for performing the cell handover, wherein the UE performs cellular mobile data communication via a satellite signal.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may obtain, at an access stratum (AS) layer, an indication of an inter-satellite link (ISL) activation that is to take place at an activation time. The wireless communication device may receive communications. The wireless communication device may buffer the communications in a buffer at the AS layer. The wireless communication device may release the communications from the buffer to an upper protocol layer at a rate of release that is to change between a transition start time and the activation time. Numerous other aspects are described.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Disclosed herein is a method of a user equipment (UE) for non-terrestrial network (NTN) the method comprising: receiving, from a network, assistance information related to the non-terrestrial network (NTN) for cell reselection; and performing a measurement on a neighbouring cell for the cell reselection based on the assistance information, wherein the assistance information includes ephemeris information on the neighbouring cell. In the embodiments, the assistance information is included in a system information block (SIB) broadcast by at least one of a serving cell or the neighbouring cell.

A system, method and apparatus for wireless communications is provided. A user equipment (UE) receives inter-RAT measurement configuration parameters associated with a first RAT provided by a non-terrestrial node. The inter-RAT measurement configuration parameters include information for detecting one or more events that trigger generating a measurement report. The measurement configuration parameter further include measurement information associated with the first RAT. The UE then determines one or more events based on processing the received inter RAT measurement configuration parameters. The UE generates a measurement report comprising measurement information associated with the first RAT, wherein the measurement report is based on the received inter RAT measurement configuration parameters.

A system, method and apparatus for mobile communications including sidelink transmissions is provided. A user equipment (UE) maintains a first interface between the first UE and a radio access network (RAN) infrastructure node, a second interface between the first UE and a second UE and a third interface between the first UE and a satellite node or an airborne node. The UE switches between interfaces according to a current connectivity state and based on signal attributes associated with individual interfaces.

An enhanced L-band Digital Aeronautical Communications System (LDACS) may include LDACS ground stations assigned to respective different ground communication networks; and LDACS airborne stations configured to communicate with selected ones of the LDACS ground stations based upon respective roaming agreements for the different ground communication networks. In addition, the system may include a network broker configured to authorize a connection between an LDACS airborne station and an LDACS ground station based upon a corresponding roaming agreement.

Some embodiments of the present disclosure relate to mobility management across multiple subsystems of wireless network devices, such as base-stations, drones, balloons, planes and satellites. In particular, the maintenance of user experiences across the subsystems is addressed. Aspects of the present disclosure relate to integrating terrestrial networks with non-terrestrial networks and establishing mechanisms for managing mobility of user devices as the devices travel from a service area defined by a connection with a terrestrial network to a service area defined by a connection with a non-terrestrial network or vice versa. Aspects of the present disclosure relate to establishing a format for an exchange of communication between user devices and transmit-receive points so that the mobility of the user device may be appropriately managed.

An infrastructure equipment comprising circuitry configured to transmit system information specific for aerial UEs, the system information specific for aerial UEs comprising assistance information for cell selection/reselection.

Example aspects include a method, apparatus and computer-readable medium of wireless communication at a base station of a mobile network, comprising transmitting system information corresponding to an aerial cell of the mobile network or a cell having at least one aerial sector being formed by one or more uptilt beams of the base station. The aspects further include performing, according to the system information, a random access channel (RACH) procedure with an aerial user equipment (UE). Additionally, the aspects include establishing, via the aerial cell or the at least one aerial sector, a communications link with the aerial UE.