Abstract: A network node of a terrestrial cellular system provides telecommunications service to a user equipment (UE) in an airborne aircraft. Navigation information transmitted from the aircraft is periodically acquired, including aircraft identity, position, altitude, and a time of determining aircraft position. A link is maintained between the network node and the UE by transmitting beam steered, Doppler shift compensated downlink signals, and by performing beam steered reception of uplink signals. Beam steering is directed toward the aircraft based on the navigation information. Doppler shift compensation is adapted to compensate for a Doppler shift such that the UE experiences a nominal carrier frequency when receiving transmissions from the antenna nodes. Handover from a first to a second coverage area includes using a same cell identifier and a same frequency allocation in the second coverage area as are used in the first.

Abstract: A network node of a terrestrial cellular system provides telecommunications service to a user equipment (UE) in an airborne aircraft. Navigation information transmitted from the aircraft is periodically acquired, including aircraft identity, position, altitude, and a time of determining aircraft position. A link is maintained between the network node and the UE by transmitting beam steered, Doppler shift compensated downlink signals, and by performing beam steered reception of uplink signals. Beam steering is directed toward the aircraft based on the navigation information. Doppler shift compensation is adapted to compensate for a Doppler shift such that the UE experiences a nominal carrier frequency when receiving transmissions from the antenna nodes. Handover from a first to a second coverage area includes using a same cell identifier and a same frequency allocation in the second coverage area as are used in the first.

Abstract: A network node in a cellular telecommunications system hands over responsibility for serving a wireless communication equipment from a serving cell to a target cell, wherein the wireless communication equipment is situated in a first aircraft that is in-flight. An aircraft position, an aircraft velocity, and an aircraft direction are determined. For each candidate cell of a number of candidate cells, a level of beam distortion that would result from a beam directed from the candidate cell to the first aircraft is predicted. The target cell is selected from the candidate cells by identifying which of the candidate cells has a least amount of predicted beam distortion. The target cell is then signaled to prepare for a handover of responsibility for serving the wireless communication equipment.

Abstract: A network node of a terrestrial cellular system provides telecommunications service to a user equipment (UE) in an airborne aircraft. Navigation information transmitted from the aircraft is periodically acquired, including aircraft identity, position, altitude, and a time of determining aircraft position. A link is maintained between the network node and the UE by transmitting beam steered, Doppler shift compensated downlink signals, and by performing beam steered reception of uplink signals. Beam steering is directed toward the aircraft based on the navigation information. Doppler shift compensation is adapted to compensate for a Doppler shift such that the UE experiences a nominal carrier frequency when receiving transmissions from the antenna nodes. Handover from a first to a second coverage area includes using a same cell identifier and a same frequency allocation in the second coverage area as are used in the first.

Abstract: A network node in a cellular telecommunications system hands over responsibility for serving a wireless communication equipment from a serving cell to a target cell, wherein the wireless communication equipment is situated in a first aircraft that is in-flight. An aircraft position, an aircraft velocity, and an aircraft direction are determined. For each candidate cell of a number of candidate cells, a level of beam distortion that would result from a beam directed from the candidate cell to the first aircraft is predicted. The target cell is selected from the candidate cells by identifying which of the candidate cells has a least amount of predicted beam distortion. The target cell is then signaled to prepare for a handover of responsibility for serving the wireless communication equipment.

Abstract: A network node of a terrestrial cellular system provides telecommunications service to a user equipment (UE) in an airborne aircraft. Navigation information transmitted from the aircraft is periodically acquired, including aircraft identity, position, altitude, and a time of determining aircraft position. A link is maintained between the network node and the UE by transmitting beam steered, Doppler shift compensated downlink signals, and by performing beam steered reception of uplink signals. Beam steering is directed toward the aircraft based on the navigation information. Doppler shift compensation is adapted to compensate for a Doppler shift such that the UE experiences a nominal carrier frequency when receiving transmissions from the antenna nodes. Handover from a first to a second coverage area includes using a same cell identifier and a same frequency allocation in the second coverage area as are used in the first.

Abstract: A portable telecommunication apparatus has a user interface, a programmable controller, a memory coupled to the controller, and an information access program, such as a WAP browser, which is stored in the memory and is executable by the controller. The information access program provides access for a user to a global information network, such as Internet, through the user interface and a first wireless communication link. The apparatus also has an external device interface for connecting an external device to the portable telecommunication apparatus over a second communication link. The information access program allows the user to control the external device through the user interface, the external device interface and the second communication link.

Abstract: A portable telecommunication apparatus (200) has a user interface (250), a programmable controller (210), a memory (220, 230) coupled to the controller, and an information access program (240), such as a WAP browser, which is stored in the memory and is executable by the controller. The information access program provides access for a user to a global information network, such as Internet, through the user interface and a first wireless communication link. The apparatus also has an external device interface (260, 262, 264) for connecting an external device to the portable telecommunication apparatus over a second communication link. The information access program (240) allows the user to control the external device through the user interface (250), the external device interface (260, 262, 264) and the second communication link.

Abstract: A logotype to be exposed by an electronic device is secured via a message authentication code or a public key cryptographic scheme. If a message authentication code is used, the message authentication code is re-calculated and compared to a reference message authentication code value during a boot sequence of the electronic device. If the reference message authentication code value and the re-calculated message authentication code value match, further operation of the electronic device is permitted. If the values do not match, the electronic device is disabled from further operation. If a public-key cryptographic scheme is used, the logotype is verified via a public key. If the logotype can be verified, the logotype is exposed.

Abstract: A controlling device, such as an ASIC, supplies a clock signal to a controlled device, for example in a mobile phone or other portable battery operated electronic equipment. The presence or absence of a clock signal controls the power supply to the controlled device. This avoids power consumption in analog as well as digital circuits, when in a standby state, while only using a single output pin on the controlling ASIC.

Abstract: A method and system for compressing and decompressing voice messages in conjunction with storage thereof. By utilizing existing compression hardware and software, additional voice message features can be provided in mobile radio units with minimal expense and system disruption.