Dynamic azimuth adjustment for cellular repeater antenna systems
地域：
Kypseli
摘要
A mobile vehicle repeater antenna system, comprising: a scanning antenna system comprising one or more scanning antennas, wherein the one or more scanning antennas are configured to receive, for at least a first azimuth heading value and a second azimuth heading value, data comprising mobile communication signal and network parameters, a donor antenna system comprising one or more antennas, wherein the one or more antennas are configured to receive and transmit mobile communication signals, a controller connected to the scanning antenna system and the donor antenna system, wherein the controller is configured to compare the received data for the at least first azimuth heading value and the second azimuth heading value; determine whether the first azimuth heading value or the second azimuth heading value provides optimal network and signal parameters according to predefined criteria; and control operation of the one or more antennas of the donor antenna system in accordance with the determination.
說明書
This application is a U.S. nationalization under 35 U.S.C. § 371 of International Application No. PCT/EP2015/078184, filed Dec. 1, 2015, which claims priority to United Kingdom Patent Application No. 1421388.8, filed Dec. 2, 2014. The disclosures set forth in the referenced applications are incorporated herein by reference in their entireties.
This invention relates to cellular repeater antenna systems, and, more specifically, to cellular repeater systems for moving vehicles.
Cellular reception in or on moving vehicles such as cars, buses, trams, train and ships is often poor because the vehicles are moving through areas which are served by different transmission installations and because the vehicles are predominantly metallic structures which act as Faraday cages and therefore further attenuate cellular signals.
Moving vessels at sea encounter weak reception of mobile communication signals because, in addition to the above, base station antennas are primarily planned, positioned and installed on land in order to serve mainland hotspots. The sea routes along which vessels travel are not usually located in main radiation areas of base station antennas and are generally a long distance away from cellular towers, resulting in significant pathloss.
權利要求
The invention claimed is:1. A mobile vehicle repeater antenna system, comprising:a scanning antenna system comprising one or more scanning antennas, wherein the one or more scanning antennas are configured to receive, for at least a first azimuth heading value and a second azimuth heading value, data comprising mobile communication signal and network parameters, a donor antenna system comprising one or more antennas, wherein the one or more antennas are configured to receive and transmit mobile communication signals, wherein the donor antenna system is connected to a bi-directional amplifier, a controller connected to the scanning antenna system and the bi-directional amplifier, wherein the controller is configured toreceive, process and compare the received mobile communication signals for the at least first azimuth heading value and the second azimuth heading value; determine whether the first azimuth heading value or the second azimuth heading value provides optimal network and signal parameters according to predefined criteria; and control connectivity of the bi-directional amplifier with the one or more donor antennas of the donor antenna system in accordance with the determination; wherein the donor antenna system and the scanning antenna system are comprised in a dual polarisation antenna system comprising two or more antennas, wherein each of the two or more antennas has a first polarisation and a second polarisation, and wherein the first polarisation of each of the two or more antennas operates as a scanning antenna and the second polarisation of each of the two or more antennas operates as a donor antenna. 2. The system of claim 1 , wherein the first azimuth heading value and the second azimuth heading value are, respectively, heading values of two of the two or more antennas of the dual polarisation antenna system. 3. The system of claim 1 , wherein the dual polarisation antenna system comprises first, second and third antennas, and wherein the main beam of the first, second and third antenna is positioned at 120, 240 and 360 degrees on the azimuth plane. 4. The system of claim 1 , wherein the controller comprises a timer and the scanning antenna system comprises an RF power switch, wherein the RF power switch of the scanning antenna system is synchronised with the timer of the controller. 5. The system of claim 4 , wherein the controller is further configured to control the scanning antenna system to collect data by sequencing operation of its directional antennas, wherein the sequenced operation of the antennas is controlled by the timer. 6. The system of claim 4 , wherein the sequencing pattern dictates the length of the time periods during which data is collected for each antenna of the scanning antenna system. 7. The system of claim 6 , wherein the time periods for collecting data are equal for each antenna in the scanning antenna system. 8. The system of claim 7 , wherein the controller is configured to determine, based on the network and signal parameters received by each scanning antenna during a complete scanning sequence, which directional antenna of the donor antenna system is to be operational during the next scanning sequence. 9. The system of claim 1 , wherein each of the one or more scanning antennas are concurrently operational and collecting data, and preferably wherein the controller periodically compares the data received from all of the one or more scanning antennas. 10. The system of claim 1 , wherein the donor antenna system comprises one or more internal panel antennas. 11. The system of claim 1 , further comprising an RF power switch disposed between the controller and the scanning antenna system. 12. The system of claim 11 , wherein the controller is connected to the RF power switch of the scanning antenna system by coaxial cables. 13. The system of claim 1 , further comprising an RF power switch disposed between the bidirectional amplifier and the one or more donor antennas, wherein the RF switch is connected to the controller and operates according to instructions received from the controller. 14. The system of claim 13 , wherein the controller is configured to adjust operation of the RF power switch disposed between bidirectional amplifier and the one or more donor antennas so as to select operation of one of the directional antennas of the donor antenna system immediately following completion of operation of the scanning antenna system. 15. The system of claim 1 , wherein the collected data comprises base station cell identification and received signal strength. 16. The system of claim 1 , wherein the predefined criteria comprise signal coverage, quality and capacity indicators. 17. The system of claim 1 , wherein the donor antenna system comprises an antenna and an antenna azimuth alignment device configured to steer the antenna 360 degrees in the azimuth plane. 18. The system of claim 1 , wherein the scanning antenna system comprises an antenna and an antenna azimuth alignment device configured to steer the antenna 360 degrees in the azimuth plane. 19. A method for operating a mobile vehicle antenna system, comprisingreceiving, for at least a first azimuth heading value and a second azimuth heading value, data comprising mobile communication signal and network parameters from a scanning antenna system, wherein the scanning antenna system comprises in a dual polarisation antenna system comprising two or more antennas, wherein each of the two or more antennas has a first polarisation and a second polarisation, and wherein the first polarisation of each of the two or more antennas operates as a scanning antenna and the second polarisation of each of the two or more antennas operates as a donor antenna; comparing the received data for the at least first azimuth heading value and the second azimuth heading value; determining whether the first azimuth heading value or the second azimuth heading value provides optimal network and signal parameters according to predefined criteria; controlling operation of a donor antenna of the dual polarization antenna system in accordance with the determination. 20. A non-transitory machine readable medium storing executable instructions that, when executed by a data processing system, cause the system to perform the method according to claim 19 . 21. A mobile vehicle antenna system, comprising:a scanning antenna system comprising one or more scanning antennas, wherein the one or more scanning antennas are configured to receive, for at least a first azimuth heading value and a second azimuth heading value, data comprising mobile communication signal and network parameters, a donor antenna system comprising one or more antennas, wherein the one or more antennas are configured to receive and transmit mobile communication signals, wherein the donor antenna system is connected to a bi-directional amplifier, a controller connected to the scanning antenna system and the bi-directional amplifier, wherein the controller is configured toreceive, process and compare the received mobile communication signals for the at least first azimuth heading value and the second azimuth heading value; determine whether the first azimuth heading value or the second azimuth heading value provides optimal network and signal parameters according to predefined criteria; and control connectivity of the bi-directional amplifier with the one or more donor antennas of the donor antenna system in accordance with the determination; wherein the controller comprises a timer and the scanning antenna system comprises an RF power switch, wherein the RF power switch of the scanning antenna system is synchronised with the timer of the controller. 22. The system of claim 21 , wherein the controller is further configured to control the scanning antenna system to collect data by sequencing operation of its directional antennas, wherein the sequenced operation of the antennas is controlled by the timer. 23. The system of claim 21 , wherein the sequencing pattern dictates the length of the time periods during which data is collected for each antenna of the scanning antenna system. 24. The system of claim 23 , wherein the time periods for collecting data are equal for each antenna in the scanning antenna system. 25. The system of claim 24 , wherein the controller is configured to determine, based on the network and signal parameters received by each scanning antenna during a complete scanning sequence, which directional antenna of the donor antenna system is to be operational during the next scanning sequence.
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