A method, apparatus, and computer-program product are provided. In the context of a method, the method receives, from a first network node via a source satellite, a system information block, wherein the system information block indicates a random access channel opportunity window in which the user equipment should access the first network node or a second network node. The method includes determining, based on the system information block, an access time within the random access channel opportunity window. The method includes transmitting, to the first network node or the second network node via a target satellite, a random access channel preamble at the access time.

A communication device (40) of the present disclosure includes a first communication unit (42), a second communication unit (45), and a control unit (46). The first communication unit (42) performs first communication using a packet with a satellite station (40N). The second communication unit (45) performs second communication using a beacon with the satellite station (40N). Via the first communication unit (42), the control unit (46) transmits the packet to the satellite station (40N) with which the second communication using the beacon is performed via the second communication unit (45).

Systems and methods of the present disclosure may use a satellite operations center (SOC) to access an activity queue of satellite activity tasks in an activity buffer, each satellite activity task being associated with at least one satellite in a fleet. The SOC may determine mission critical variables associated with each satellite activity task based on space environment context data, satellite telemetry data, the position of each satellite, and the trajectory of each satellite. The SOC may determine, for each satellite activity task, using at least one statistical model, a prioritization tier based on the mission critical variables of each satellite activity task, and determine a satellite activity order defining an order of the satellite activity tasks based on the prioritization tier of each satellite activity task. The SOC may modify the activity buffer to order the satellite activity tasks in the activity queue according to the satellite activity order.

According to at least one embodiment, a method of operating a Next Generation (NG) Node B (gNB) on board a non-terrestrial satellite includes: establishing a physical layer connection to a non-terrestrial network (NTN) gateway for an NG Application Protocol (NGAP) connection; establishing a transport layer protocol connection to a 5G core network (5GC) for the NGAP connection; determining that the NGAP connection is to become nonoperational or unavailable; and, in response to the determination, transmitting a message to indicate that the NGAP connection is to become nonoperational or unavailable.

Systems and methods for controlling satellites are provided. In one example embodiment, a computing system can obtain a request for image data. The request can be associated with a priority for acquiring the image data. The computing system can determine an availability of a plurality of satellites to acquire the image data based at least in part on the request. The computing system can select from among a plurality of communication pathways to transmit an image acquisition command to a satellite based at least in part on the request priority. The plurality of communication pathways can include a communication pathway via which the image acquisition command is indirectly communicated to the satellite via a geostationary satellite. The computing system can send the image acquisition command to the selected satellite via the selected communication pathway.

A method for computing or estimating a service time interval or service time information related to a user equipment in a mobile communication network includes: in a first step, generating, by the user equipment, location information related to the user equipment's position; and in a second step, computing or estimating, by the user equipment, the service time interval or the service time information, wherein the computing or estimating is based on the location information related to the user equipment's position and based on reference location information received from a base station entity.

The present application relates to a method and an apparatus for UE context transmission and reception. One embodiment of the subject application provides a method performed by a first Base Station (BS), which includes: broadcasting a first RAN-based Notification Area (RNA) covering a RNA location; determining a second BS which is about to cover the RNA location; and transmitting User Equipment (UE) context to the second BS via a direct link between the first BS and the second BS or via a core network before the first BS leaves the RNA location.

An apparatus method and system are disclosed for dynamically implementing spectrum configuration plans in a satellite communication system. A spectrum configuration plan is created, and validated to determine if it can be utilized within the predetermined coverage area. If any errors are generated while validating the spectrum configuration plan, it is rejected. Otherwise, system components are configured to provide communication within the predetermined coverage area using parameters specified in the spectrum configuration plan. The spectrum configuration plan is also transmitted to all terminals in the coverage area. The spectrum configuration plan is subsequently implemented for all communication within the predetermined coverage area.

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.

In accordance with an embodiment, a method includes displaying a satellite communication mode enabling control in a first interface; receiving an operation for the satellite communication mode enabling control and displaying a first page in response to receiving the operation, where the first page includes first indication information that indicates a user to adjust a posture of holding the first electronic device; establishing a satellite communication connection to a satellite in response to the first electronic device being aligned with the satellite; receiving a dialing operation for a first number; displaying a first prompt on an in-call screen, where the first prompt prompts the user to maintain or adjust a current posture of holding the first electronic device; and making a call to a second electronic device corresponding to the first number via the satellite communication connection.