Indoor radio communication system
First Claim
1. An indoor radio communication system arranged in a room, comprising:
- a master antenna in the room having a high directivity for radiating an electric wave at a narrowed beam width in a first vertical direction, the electric wave carrying a data signal;
a first electric wave receiving/transmitting means in the room for receiving the electric wave radiated from the master antenna in the first vertical direction and transmitting the electric wave in a horizontal direction;
a second electric wave receiving/transmitting means in the room for receiving the electric wave transmitted in the horizontal direction by the first electric wave receiving/transmitting means and transmitting the electric wave in a second vertical direction opposite to the first vertical direction; and
a slave antenna in the room having a high directivity for receiving the electric wave transmitted in the second vertical direction by the same electric wave receiving/transmitting means.
1 Assignment
0 Petitions
Accused Products
Abstract
A master station master antenna having a high directivity in an upper direction, a slave station and a slave antenna having a high directivity in the high direction are arranged on a floor of a room, and furniture is arranged on the floor between the master antenna and the slave antenna. Also, a master reflecting mirror is arranged on a ceiling of the room placed just above the master antenna, and a slave reflecting mirror is arranged on the ceiling placed just above the slave antenna. When an electric wave having a data signal is radiated from the master station, the electric wave radiated in the upper direction passes through a first transmission route and is reflected by the master reflecting mirror toward a horizontal direction. Thereafter, the electric wave passes through a second transmission route near the ceiling and is again reflected by the slave reflecting mirror toward the lower direction. Thereafter, the electric wave passes through a third transmission route and is received by the slave antenna because the slave antenna has a high directivity to receive the electric wave transmitted from the upper direction. Therefore, the data signal can be reliably detected by the slave station without being interrupted by the furniture.
282 Citations
41 Claims
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1. An indoor radio communication system arranged in a room, comprising:
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a master antenna in the room having a high directivity for radiating an electric wave at a narrowed beam width in a first vertical direction, the electric wave carrying a data signal; a first electric wave receiving/transmitting means in the room for receiving the electric wave radiated from the master antenna in the first vertical direction and transmitting the electric wave in a horizontal direction; a second electric wave receiving/transmitting means in the room for receiving the electric wave transmitted in the horizontal direction by the first electric wave receiving/transmitting means and transmitting the electric wave in a second vertical direction opposite to the first vertical direction; and a slave antenna in the room having a high directivity for receiving the electric wave transmitted in the second vertical direction by the same electric wave receiving/transmitting means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An indoor radio communication system, comprising:
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a master antenna having a high directivity for radiating an electric wave at a narrowed beam width in a first vertical direction, the master antenna being set in a first room, and the electric wave carrying a data signal; a first electric wave receiving/transmitting means set in the first room for receiving the electric wave radiated from the master antenna in the first vertical direction and transmitting the electric wave in a horizontal direction; a second electric wave receiving/transmitting means set in the first room for receiving the electric wave transmitted in the horizontal direction by the first electric wave receiving/transmitting means and transmitting the electric wave to a second room through an electric wave path; and a slave antenna having a high directivity for receiving the electric wave transmitted through the electric wave path by the second electric wave receiving/transmitting means, the first slave antenna being set in the second room. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. An indoor radio communication system, comprising:
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a master antenna having a high directivity for radiating an electric wave in all horizontal directions of a thinned horizontal plane near a ceiling of a room, the electric wave carrying a data signal; a first electric wave receiving/transmitting means for receiving the electric wave radiated from the master antenna in one of the horizontal directions and transmitting the electric wave in a lower direction; and a slave antenna having a high directivity for receiving the electric wave transmitted by the first electric wave receiving/transmitting means in the lower direction. - View Dependent Claims (36, 37, 38, 39, 40, 41)
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Specification