Abstract: A method for maintaining a connection of mobile user equipment to a core network, and a communication network are disclosed. The method comprises the steps of providing a multi-channel communication link between a user equipment at a first location and a plurality of aerial vehicles, determining that the user equipment is moving whereby a loss of connectivity via the multi-channel communication link may occur, and subsequently, via a handover step, transferring communication between the user equipment and a core network from communication via the multi-channel communication link to communication via a single channel communication link provided by a respective aerial vehicle.

Abstract: A method for correcting frequency and/or phase in a communication link; a communication network; and a multiplexing and phase compensation unit are disclosed. The method for correcting frequency and/or phase in a communication link comprises receiving at least one reference transmission communicated via a wireless communication link; providing at least one identified characteristic by identifying at least one characteristic of the reference transmission; comparing said identified characteristic with at least one expected characteristic; and correcting a shift in frequency and/or phase of at least one communication signal communicated via the communication link based on a difference between the identified characteristic and the expected characteristic.

Abstract: A communication network comprising a plurality of base stations arranged to communicate data to and from a plurality of mobile devices, and at least one first base station operable to establish a first wireless communication link with a selected mobile device from the plurality of mobile devices, said first wireless communication link enabling the selected mobile device to simultaneously provide further wireless communication links to two or more mobile devices for communicating data via the first wireless communication link.