Abstract: A technique for controlling an airborne antenna system (304) for a radio telecommunications network mounted on an aircraft (300) is described. As to a method aspect performed by the aircraft (300), a physical antenna orientation of the antenna system (304) relative to geographic cardinal directions is determined. The physical antenna orientation is stabilized in a predefined direction relative to the geographic cardinal directions by controlling a rotational actuator (514) of the antenna system (304).

Abstract: A conveyor arrangement for airborne battery replacement between an aerial supply vehicle having a store of replacement batteries suitable to power electric aerial vehicles and an electric aerial vehicle powered by a set of replaceable batteries is disclosed. The conveyor arrangement is configured to convey batteries between the aerial supply vehicle and the electric aerial vehicle during flight to replace a replaceable battery from the set of the electric aerial vehicle by a replacement battery from the store of the aerial supply vehicle.

Abstract: A method of and radio data communication equipment arranged for data exchange by Wide Area Network radio data communication equipment operating as a Radio Base Station applied on a plurality of nautical vessels, and by radio data communication equipment operating as User Equipment applied on a nautical beacon. A radio communication link between the radio data communication equipment of a nautical vessel and a nautical beacon is established when an indication of availability of radio access resources of the radio data communication equipment of a nautical vessel is received by the radio data communication equipment of a nautical beacon and when the radio data communication equipment of a nautical beacon is in an operating position.

Abstract: A conveyor arrangement for airborne battery replacement between an aerial supply vehicle having a store of replacement batteries suitable to power electric aerial vehicles and an electric aerial vehicle powered by a set of replaceable batteries is disclosed. The conveyor arrangement is configured to convey batteries between the aerial supply vehicle and the electric aerial vehicle during flight to replace a replaceable battery from the set of the electric aerial vehicle by a replacement battery from the store of the aerial supply vehicle.

Abstract: A technique for rotating one or more multi-sector antennas mounted on unmanned aircrafts of a radio access network, RAN, is described. Each of the multi-sector antennas comprises multiple sectors. The multiple sectors of each of the multi-sector antennas are configured to provide radio access to radio devices in different azimuthal directions that are changeable relative to the aircraft and fixed relative to each other when rotating the respective one of the multi-sector antennas. As to a method aspect of the technique, the at least one or each of the aircrafts of the RAN determines signal strengths of radio signals exchanged between a first radio device and at least two of the multiple sectors of the multi-sector antenna mounted on the respective one of the aircrafts Based on the determined signal strengths, a first azimuthal direction is computed for providing radio access to the first radio device.

Abstract: A method in a network node includes receiving a radio resource control (RRC) connection reestablishment request from a user equipment (UE). The method includes generating a new Long identifier, ID, for the UE. The method includes determining whether a UE Context Fetch is successful. The method includes responsive to determining that the UE Context Fetch is not successful, determining whether a Long ID has been fetched. The method includes responsive to determining that the Long ID has been fetched, placing the Long ID that has been fetched in a UE Context Fetch Failure event.

Abstract: A technique for controlling an airborne antenna system (304) for a radio telecommunications network mounted on an aircraft (300) is described. As to a method aspect performed by the aircraft (300), a physical antenna orientation of the antenna system (304) relative to geographic cardinal directions is determined. The physical antenna orientation is stabilized in a predefined direction relative to the geographic cardinal directions by controlling a rotational actuator (514) of the antenna system (304).

Abstract: A method of and radio data communication equipment arranged for data exchange by Wide Area Network radio data communication equipment operating as a Radio Base Station applied on a plurality of nautical vessels, and by radio data communication equipment operating as User Equipment applied on a nautical beacon. A radio communication link between the radio data communication equipment of a nautical vessel and a nautical beacon is established when an indication of availability of radio access resources of the radio data communication equipment of a nautical vessel is received by the radio data communication equipment of a nautical beacon and when the radio data communication equipment of a nautical beacon is in an operating position.

Abstract: A method of handover of radio communication (70) between user equipment (71; 72; 73) and radio network access devices (31-37) of a radio access network (30) operatively connected by an intermediate mobile radio access device (50). Handover of the radio communication (70) is performed by the mobile radio access device (50) in association with mobile management entity functionality (40) available to the radio network access device (31) serving the radio communication (70) and a further radio network access device (32-37) of the radio access network (30) having received a handover request transmitted by the mobile radio access device (50).

Abstract: A maintenance base controls a plurality of mobile robots providing a radio coverage area. The maintenance base instructs a mobile robot of the plurality of mobile robots to maintain a formation with the other mobile robots in the plurality of mobile robots such that the radio coverage area is provided, and instructs the mobile robot to rotate positions within the formation to maintain the radio coverage area as a further mobile robot in the formation leaves the formation and another mobile robot enters the formation. The mobile robot acts in accordance with the instructions of the maintenance base.

Abstract: A method of handover of radio communication (70) between user equipment (71; 72; 73) and radio network access devices (31-37) of a radio access network (30) operatively connected by an intermediate mobile radio access device (50). Handover of the radio communication (70) is performed by the mobile radio access device (50) in association with mobile management entity functionality (40) available to the radio network access device (31) serving the radio communication (70) and a further radio network access device (32-37) of the radio access network (30) having received a handover request transmitted by the mobile radio access device (50).

Abstract: A maintenance base controls a plurality of mobile robots providing a radio coverage area. The maintenance base instructs a mobile robot of the plurality of mobile robots to maintain a formation with the other mobile robots in the plurality of mobile robots such that the radio coverage area is provided, and instructs the mobile robot to rotate positions within the formation to maintain the radio coverage area as a further mobile robot in the formation leaves the formation and another mobile robot enters the formation. The mobile robot acts in accordance with the instructions of the maintenance base.

Abstract: A plurality of mobile robots provide a radio coverage area of a wireless communication network. Each mobile robot comprises a radio base station of the wireless communication network. A mobile robot of the plurality of mobile robots moves to a geographical position to deploy as part of a daisy chain loop of the mobile robots upon receiving instruction from a maintenance base. Upon receiving further instruction from the maintenance base, the mobile robot moves to a further geographical position as part of a circular shift operation performed by the mobile robots deployed to the daisy chain loop to maintain the radio coverage area and send a further mobile robot of the mobile robots deployed to the daisy chain loop to the maintenance base.

Abstract: A plurality of mobile robots provide a radio coverage area of a wireless communication network. Each mobile robot comprises a radio base station of the wireless communication network. A mobile robot of the plurality of mobile robots moves to a geographical position to deploy as part of a daisy chain loop of the mobile robots upon receiving instruction from a maintenance base. Upon receiving further instruction from the maintenance base, the mobile robot moves to a further geographical position as part of a circular shift operation performed by the mobile robots deployed to the daisy chain loop to maintain the radio coverage area and send a further mobile robot of the mobile robots deployed to the daisy chain loop to the maintenance base.

Abstract: A system, methods, apparatuses, and computer programs for providing coverage of a wireless communication network are described. The wireless communication network comprises radio base stations (150) mounted on mobile robots (100) and the mobile robots (100) are capable of communicating with a maintenance base (110). The method comprises to determine a radio coverage area (140) to be provided by the base stations mounted on said mobile robots (100). The method further comprises to deploy said mobile robots (100) at geographical positions suitable to provide the radio coverage area (140) and the maintenance base (110) replacing a deployed mobile robot (100) in order to maintain the radio coverage area (140).

Abstract: A system, methods, apparatuses, and computer programs for providing coverage of a wireless communication network are described. The wireless communication network comprises radio base stations (150) mounted on mobile robots (100) and the mobile robots (100) are capable of communicating with a maintenance base (110). The method comprises to determine a radio coverage area (140) to be provided by the base stations mounted on said mobile robots (100). The method further comprises to deploy said mobile robots (100) at geographical positions suitable to provide the radio coverage area (140) and the maintenance base (110) replacing a deployed mobile robot (100) in order to maintain the radio coverage area (140).