Provided in embodiments of the disclosure are a communication method and device. A terminal device receives configuration information from a network device, and transmits timing advance (TA) information to the network device according to the configuration information. The TA information is configured to indicate a TA value determined by the terminal device.

Provided are a measurement method and apparatus, and devices. The method comprises: a terminal device acquiring a plurality of measurement parameters of a network device; and the terminal device determining a first measurement parameter from the plurality of measurement parameters, and performing measurement on a TN cell according to the first measurement parameter. The communication performance between the terminal device and the network device is improved.

A method implemented by a user equipment performs a handover between a first cell and a second cell in a network comprising a satellite communication network, the first cell and the second cell being supported by one or more satellites of the satellite communication network, the first cell corresponding to a first base station and the second cell corresponding to a second base station, at least the first cell being supported by a non-geostationary orbit satellite of the satellite communication network, the method including: determining a value to be used as a timing advance in the second cell; and performing an uplink transmission with the second base station using the value to be used as a timing advance in the second cell.

The embodiments herein provide a system and method for integrated optimization of design and performance of satellite constellations. The present disclosure provides a method for optimization of design and performance of satellite constellation to provide internet connectivity at preset geographic regions. In current methods, the optimizations of subsystems are performed independently and the results are combined, resulting in a loss of overall optimality. The present disclosure defines the relationships between subsystems such that integrity of complete design is tested with fewer complexities and provides an integrated optimization framework, in which every subsystem is optimized individually and collectively. The present disclosure provides a method for optimization of power subsystem of satellites by determining the pattern of payload operation and need for peak power. The present disclosure also provides a method to minimize the number of satellites required in constellations by carefully regulating spot beams formed by individual satellites in constellations.

This present disclosure describes techniques for relaying user plane data from a core network to a recipient device via a terrestrial core network. An orchestration controller is described that is configured to receive an indication that a terrestrial core network has received user plane data for transmission to a recipient device, detect a constellation of Low Earth Orbit (LEO) satellites to transmit the user plane data to the recipient device, select at least a first LEO satellite to receive the user plane data, and transmit the user plane data to the first LEO satellite.

A method for communication processing is performed by a terminal, and includes: obtaining measurement information of an adjacent satellite beam footprint of a satellite beam footprint to which the terminal currently belongs; and measuring a reference signal of the adjacent satellite beam footprint based on the measurement information.

Systems and method for supporting a fractionated satellite constellation are disclosed. A gateway satellite may route communications to and from auxiliary satellites using a first communication protocol. The auxiliary satellites may be orbitally-coupled with the gateway satellite and may be equipped with respective payload types that provide respective functionalities. The auxiliary satellites may also use respective communications protocols that are different than one another and the first communication protocol. Routing communications to and from auxiliary satellites may include relaying a communication between multiple auxiliary satellites. Routing communications between auxiliary satellites may include relaying a communication between multiple gateway satellites. Routing communications to and from auxiliary satellites may also include relaying communications between commercial satellites and auxiliary satellites.

A non-terrestrial network is provided that includes a satellite that transmits an orbital parameter message to a user equipment. The user equipment processes the orbital parameter message to determine a current range from the user equipment to the satellite based upon the received orbital parameter message, a timing offset and a frequency offset for an uplink transmission to the satellite.

A control method and a control device in a heterogeneous three-dimensional hierarchical network, and a communication system are provided. The control method includes: obtaining a coverage mode of a terminal; when the coverage mode is single-layered sub-network coverage, setting a non-ground mobile communication sub-network or a ground mobile communication sub-network corresponding to the single-layered sub-network coverage to be in a standalone operating mode or an intra-layer carrier aggregation mode; and when the coverage mode is multi-layered sub-network coverage, setting the non-ground mobile communication sub-network corresponding to the multi-layered sub-network coverage, or the ground mobile communication sub-network and the non-ground mobile communication sub-network corresponding to the multi-layered sub-network coverage, to be in a cross-layer carrier aggregation mode. The ground mobile communication sub-network and the non-ground mobile communication sub-network use a same or unified radio access technology.

Disclosed are a measurement reporting method and apparatus in an NTN, a receiving method and apparatus, and a device and a medium, the measurement reporting method in an NTN being applied to a terminal. The method includes: receiving a measurement configuration; and reporting a first measurement result and a second measurement result according to the measurement configuration, wherein the first measurement result is a position-related measurement result, and the second measurement result is a measurement result of at least one of the signal quality of a serving cell and the signal quality of a neighbor cell.