Antenna Arrangement
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsPar Backlund, Anette Borg, Jonas Karlsson
Life of this patent
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Abstract
In a cellular communications system the antenna tilt may be varied in order to achieve different degrees of overlap between different cells, in dependence of the service being transmitted. For a broadcast service the antenna tilt may be set to maximize the overlap, while for a data or speech connection the antenna tilt may be set to minimize the overlap.
Claims15
1-14. (canceled)
An antenna system comprising:
- an antenna array configured to transmit at least one signal on a corresponding carrier, the antenna array having at least two transmitting elements;
- and
- a phase shift controller configured to control a phase shift of the antenna array to achieve an electrical tilt based on a type of service carried by the signal.
A base station for use in a cellular telecommunications network, for controlling the transmission of signals through at least one antenna array, the base station comprising:
- a control unit configured to control the transmission of a signal based on a type of service carried by the signal.
A computer readable medium for use in a base station operating in a communications network, the computer readable medium comprising computer readable code that, when executed by a control unit in the base station and responsive to the base station receiving a signal from the network that is to be transmitted to one or more mobile terminals, will cause the control unit to:
- determine a type of service that is to be transmitted;
- and
- control transmission of the signal such that the signal is transmitted with a desired tilt based on the type of service carried by the signal.
Dependencies are inferred from the claim text.