Method for signal transmission in a communication system between a mobile radio transmission/reception device and a stationary radio transmission/reception device
First Claim
1. A method for signal transmission in a communication system between a mobile radio transmission/reception device having a mobile antenna device, and a stationary radio transmission/reception device having a stationary antenna device, the method comprising the steps of:
- illuminating a radio area to be covered by the stationary radio transmission/reception device by at least two individual directional antennas, the at least two individual directional antennas forming the stationary antenna device;
providing radio sub-areas of the radio area;
covering each respective radio sub-area of the radio area with a respective one of the at least two individual directional antennas; and
activating in antenna diversity fashion a respective one of the at least two individual directional antennas in whose respective radio sub-area the mobile radio transmission/reception device is located, wherein only one of the at least two individual directional antennas is activated at any one point in time for both transmitting and receiving data to and from the mobile antenna device.
1 Assignment
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Accused Products
Abstract
The radio area to be covered by the stationary radio transmission/reception device, for example of the base station of a cordless telephone, is illuminated by two or more directional antennas (3, 4) respectively covering a radio sub-area thereof, whereby that respective directional antenna in whose radio sub-area the mobile radio transmission/reception means, i.e., for example, the mobile part of the cordless telephone, is located is activated (antenna diversity). The method and apparatus can be advantageously utilized in cordless telephones.
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Citations
12 Claims
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1. A method for signal transmission in a communication system between a mobile radio transmission/reception device having a mobile antenna device, and a stationary radio transmission/reception device having a stationary antenna device, the method comprising the steps of:
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illuminating a radio area to be covered by the stationary radio transmission/reception device by at least two individual directional antennas, the at least two individual directional antennas forming the stationary antenna device;
providing radio sub-areas of the radio area;
covering each respective radio sub-area of the radio area with a respective one of the at least two individual directional antennas; and
activating in antenna diversity fashion a respective one of the at least two individual directional antennas in whose respective radio sub-area the mobile radio transmission/reception device is located, wherein only one of the at least two individual directional antennas is activated at any one point in time for both transmitting and receiving data to and from the mobile antenna device. - View Dependent Claims (2, 3, 4)
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5. A method for signal transmission in a communication system between a mobile radio transmission/reception device having a mobile antenna device, and a stationary radio transmission/reception device having a stationary antenna device, the method comprising the steps of:
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illuminating a radio area to be covered by the stationary radio transmission/reception device by at least two individual directional antennas, the at least two individual directional antennas forming the stationary antenna device;
providing radio sub-areas of the radio area;
covering each respective radio sub-area of the radio area with a respective one of the at least two individual directional antennas;
activating in antenna diversity fashion a respective one of the at least two individual directional antennas in whose respective radio sub-areas the mobile radio transmission/reception device is located, wherein only one of the at least two individual directional antennas is activated at any one point in time for both transmitting and receiving data to and from the mobile antenna device; and
wherein the mobile radio transmission/reception device is a mobile telephone, and the stationary radio transmission/reception device is a base station. - View Dependent Claims (6, 7, 8, 11)
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9. An apparatus for signal transmission in a communication system between a mobile radio transmission/reception device and a stationary radio transmission/reception device, the apparatus comprising:
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a mobile antenna device on the mobile radio transmission/reception device; and
a stationary antenna device on the stationary radio transmission/reception device, the stationary antenna device formed of at least two individual directional antennas which together illuminate a radio area to be covered by the stationary radio transmission/reception device, each of the at least two individual directional antennas respectively covering a radio sub-area of the radio area to be covered by the stationary radio transmission/reception device, wherein a respective one of the at least two individual directional antennas in whose respective radio sub-area the mobile radio transmission/reception device is located is respectively activated in antenna diversity fashion, wherein only one of the at least two individual directional antennas is activated at any one point in time for both transmitting and receiving data to and from the mobile antenna device. - View Dependent Claims (10, 12)
a direction adjustment device for the directional antennas of the stationary radio transmission/reception device.
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12. The apparatus according to claim 9, wherein the directional antennas of the stationary radio transmission/reception device are quick-heading beam antennas that are respectively composed of a vertical half-wave radiator with four parasitic elements that are arranged at a distance of 0.15 λ
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is a wavelength each from the half-wave radiator and whose lengths are switched such that the elements optionally act either as directors or as reflectors.
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Specification