Data transmission method in base station of radio system, base station of radio system, and antenna array of base station
First Claim
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1. A data transmission method in a base station of a radio system, the method comprising performing the following steps in the same base station:
- forming an antenna diversity mode using at least one antenna element of a linear part of a compact antenna array and at least one antenna element of a non-linear part; and
forming a beam-forming mode using at least one antenna element of the linear part of the compact antenna array used in the formation of the antenna diversity mode and another antenna element of the linear part.
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Abstract
The invention relates to a method and a base station of a radio system implementing the method and to an antenna array of the base station which enable both antenna diversity and beam forming using the same antenna array. In the solution described the antenna array comprises, in addition to a linear part configured for beam forming, a non-linear part which is used for forming diversity. Furthermore, the non-linear part enlarges the aperture of the antenna array, thus improving the quality of beam forming.
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Citations
20 Claims
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1. A data transmission method in a base station of a radio system, the method comprising performing the following steps in the same base station:
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forming an antenna diversity mode using at least one antenna element of a linear part of a compact antenna array and at least one antenna element of a non-linear part; and
forming a beam-forming mode using at least one antenna element of the linear part of the compact antenna array used in the formation of the antenna diversity mode and another antenna element of the linear part. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A base station of a radio system comprising:
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a compact antenna array for implementing a radio interface of the base station;
the compact antenna array including a linear part and a non-linear part;
the linear part including at least two antenna elements for transmitting and receiving signals;
the non-linear part including at least one antenna element for transmitting and receiving signals;
weighting means for weighting signals of the antenna elements;
the linear part, non-linear part and weighting means being arranged to form a beam-forming mode of the base station; and
the linear part, non-linear part and weighting means being further arranged to form a diversity mode of the base station. - View Dependent Claims (9, 10)
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11. A compact antenna array for implementing a radio interface of a base station comprising:
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a linear part and a non-linear part;
the linear part including at least two antenna elements for transmitting and receiving signals;
the non-linear part including at least one antenna element for transmitting and receiving signals;
the linear part being arranged to form a beam radiation pattern; and
the non-linear part being arranged to form at least one component of a diversity radiation pattern. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification