Transmission method, wireless base station, and wireless communication method
First Claim
1. A transmission method for sending a radio signal to a first zone and a second zone adjacent to each other, in one or more wireless base stations, the transmission method comprising:
- sending the radio signal to the first zone in a first time slot by using a first group of frequencies and sending the radio signal to the second zone by using a second group of frequencies, not including the same frequency as in the first group of frequencies;
sending the radio signal to a third zone in a second time slot by using a third group of frequencies, including more frequencies than the first group of frequencies, and sending the radio signal to a fourth zone by using a fourth group of frequencies, including more frequencies than the second group of frequencies and including the same frequency as in the third group of frequencies at least; and
shifting the third zone and the fourth zone from the direction of a boundary of the first zone and the second zone, forming the third zone by the beam width of which is narrower than a beam for the first zone, and forming the fourth zone by the beam width of which is narrower than a beam for the second zone.
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Accused Products
Abstract
A transmission method that can implement efficient communication control. A transmission block sends a signal of a first frequency band allocated to each zone, by a first directive beam which covers the entire zone, in a first time slot of a predetermined period and sends a signal of a second frequency band which contains the first frequency band and has a greater width than the first frequency band, by a second directive beam which covers a part of the zone and has a smaller beam width than the first directive beam, in a second time slot of the predetermined period.
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Citations
7 Claims
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1. A transmission method for sending a radio signal to a first zone and a second zone adjacent to each other, in one or more wireless base stations, the transmission method comprising:
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sending the radio signal to the first zone in a first time slot by using a first group of frequencies and sending the radio signal to the second zone by using a second group of frequencies, not including the same frequency as in the first group of frequencies; sending the radio signal to a third zone in a second time slot by using a third group of frequencies, including more frequencies than the first group of frequencies, and sending the radio signal to a fourth zone by using a fourth group of frequencies, including more frequencies than the second group of frequencies and including the same frequency as in the third group of frequencies at least; and shifting the third zone and the fourth zone from the direction of a boundary of the first zone and the second zone, forming the third zone by the beam width of which is narrower than a beam for the first zone, and forming the fourth zone by the beam width of which is narrower than a beam for the second zone.
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2. A wireless base station that forms one or more zones by directive beams, the wireless base station comprising:
a transmission block that sends a signal of a first frequency band allocated, by a first directive beam covering the zone, in a first time slot in a predetermined period and sends a signal of a second frequency band which is broader than the first frequency band and contains the first frequency band, by a second directive beam which has a narrower beam width than the first directive beam and covers a part of the zone, in a second time slot in the predetermined period. - View Dependent Claims (3, 4, 5, 6)
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7. A wireless communication method of a wireless base station that forms one or more zones by directive beams, the wireless communication method comprising:
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sending a signal of a first frequency band allocated, by a first directive beam covering the entire zone, in a first time slot in a predetermined period; and sending a signal of a second frequency band which is broader than the first frequency band and contains the first frequency band, by a second directive beam which covers a part of the zone and has a smaller beam width than the first directive beam, in a second time slot in the predetermined period.
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Specification