A method of space communication for IoT or equivalent services increases the number of terminals served on a space transmission resource while limiting the signaling used by the terminal. This limitation is obtained on the one hand by the allotting to each terminal of a logical beam, corresponding to a predetermined fixed geographical area wherein the terminal lies. This limitation is obtained on the other hand by management, centralized at the level of a central entity for connecting to the space network, of the association of the terminal with a logical beam and of the association of the resources bound for the logical attachment beam. A space telecommunications system implements a method of space communication. The method of space communication allows transparent switchover from a terrestrial system to the space system when the terrestrial system and the space system are integrated to a high degree, particularly at the level of the terminal.

Systems, methods, apparatuses, and computer program products for interference coordination between non-terrestrial network and terrestrial network stations are provided. One method may include exchanging, by a non-terrestrial network node, round trip time (RTT) information with at least one terrestrial network node. The method may also include informing the at least one terrestrial network node of resources scheduled at the non-terrestrial network node for one or more user equipment (UEs) to coordinate interference mitigation with the at least one terrestrial network node.

Techniques are described to support call routing and location for a user equipment (UE) with satellite wireless access to a serving PLMN. The UE sends a Session Initiation Protocol (SIP) INVITE message to a network node, such as a P-CSCF, that includes an indication of satellite access for the UE. In response the network node sends a request to another network node for a cell ID for a fixed cell in which the UE is located. The fixed cell can be independent of satellite radio cells for the serving PLMN. The network node may receive the cell ID for the fixed cell and sends the SIP INVITE message to another network node (e.g., an E-CSCF or LRF) with the cell ID for the fixed cell. The other network node may use the cell ID to route the SIP INVITE message or obtain an approximate location of the UE.

The invention provides a method and an architecture for deploying non-terrestrial cellular network base stations, so as to enable cellular network coverage in remote areas, where no fixed infrastructure is available. The proposed methods allow for efficient power management at the terminal devices that need to synchronize to the airborne or spaceborne cellular base stations. This is particularly important for IoT devices, which have inherently limited power are computing resources.

Satellite access to a public land mobile network (PLMN) with a Fifth Generation (5G) core network (5GCN) is supported by a serving satellite NodeB (gNB). The gNB determines or verifies a country in which a user equipment (UE) is located to ensure that the UE is located in the same country as the 5GCN. The gNB receives assistance data from a location server and receives UE measurements of DL signals from a plurality of satellites, e.g., GNSS satellites and/or communication satellites. The assistance data may be solicited or unsolicited by the gNB. The gNB uses the UE measurements and assistance data to determine a location and country of the UE. The gNB allows access by the UE to the 5GCN when the country matches a country of the 5GCN and may provide the 5GCN with an indication of whether the country of the UE was verified.

Access, mobility management and regulatory services are supported for satellite access to a 5G core network. Radio cells supported by a satellite may be moving as the satellite moves and may undergo changes, e.g. when a satellite is transferred from one earth station to another. A base station may broadcast a remaining lifetime for a radio cell (e.g. in a system information block) which indicates to UEs how much longer the radio cell can be accessed before a change occurs. A radio cell may also indicate support for one or more fixed tracking areas (TAs) in coverage of the radio cell. A base station may broadcast a remaining lifetime for each TA to indicate to UEs how much longer a TA will be supported by the radio cell. UEs can use the indications to perform cell change or handover to other radio cells and/or other satellites.

Access, mobility management and regulatory services are supported for satellite access to a Fifth Generation (5G) core network (5GCN). A location of a UE may be obtained by a UE or by a base station and used to determine a country in which the UE is located. The UE can then select a serving PLMN in the country of the UE which is accessible from a radio cell supported by a satellite. The UE can register with the serving PLMN and receive information from the serving PLMN concerning fixed cells and fixed tracking areas supported by the serving PLMN. If the UE attempt to register with a PLMN not in the country of the UE, a serving base station can reject the attempt and indicate the country to the UE.

A dynamic satellite load balancing system measures geographic position and travel information of in-flight aircraft in a fleet of aircraft equipped to establish in-flight connectivity services from a plurality of satellite beams. The in-flight aircraft include an on-board satellite map program with satellite map parameters to indicate which satellite beam of a group of available satellite beams is the most desirable based on the in-flight aircraft's geographic location. The system selects in-flight aircraft, determines load balanced satellite map parameters for the selected aircraft, and transmits the load balanced satellite map parameters to the aircraft to assemble load balanced satellite map programs to relieve wireless data communication saturation conditions on one or more of the satellite beams. The dynamic satellite load balancing system may transmit the load balanced satellite map parameters over an existing satellite data connection to make up-to-date adjustments to the communications load among the group of available satellite beams.

The invention provides a method and an architecture for deploying non-terrestrial cellular network base stations, so as to enable cellular network coverage in remote areas, where no fixed infrastructure is available. The proposed methods allow for efficient power management at the terminal devices that need to synchronize to the airborne or spaceborne cellular base stations. This is particularly important for IoT devices, which have inherently limited power are computing resources.

The invention provides a method and an architecture for deploying non-terrestrial cellular network base stations, so as to enable cellular network coverage in remote areas, where no fixed infrastructure is available. The proposed methods allow for efficient power management at the terminal devices that need to synchronize to the airborne or spaceborne cellular base stations. This is particularly important for IoT devices, which have inherently limited power are computing resources.