Adaptive transmission selection
First Claim
1. A controlling station for one or more cells in a cellular telecommunications system, comprising a transmitter and an antenna arrangement with a first number of antennas, each of which is adapted to cover one of a number of adjacent cells, in which each antenna has a beamwidth such that the main beam extends by a certain amount into two cells which are immediately adjacent on each side of the cell which the antenna is adapted to cover, the controlling station configured to:
- transmit on a control channel on a first number of antennas which cover non-adjacent cells;
measure the output power which is transmitted on the traffic channels on each of said first number of antennas;
if the measured total traffic channel output power on any of said first number of antenna is above a first predefined threshold, transmission on the control channel is activated on a second number of antennas;
measure the traffic channel output power on each of the antennas in the antenna arrangement; and
if the measured traffic channel output power on an antenna is below a second predefined threshold and the traffic channel on the antennas of both adjacent cells is active, the control channel transmissions on that antenna are deactivated.
1 Assignment
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Accused Products
Abstract
A controlling station (110, 400) comprising an antenna arrangement (420) with a number of antennas, which each covers one of a number of adjacent cells, with a main beam with a beamwidth that extends into two immediately adjacent cells. The controlling station (110, 400) is adapted to: -transmit on a control channel on a first number of antennas, -measure the output power on the traffic channels on the first number of antennas, -if the traffic channel output power on any of said first number of antenna is above a threshold, transmission on the control channel is activated on a second number of antennas, -measure the traffic channel output power on each antenna in the antenna arrangement, -if the measured traffic channel output power on an antenna is below a second threshold and the traffic channel on the antennas of both adjacent cells is active, the control channel transmissions on that antenna are deactivated.
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Citations
20 Claims
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1. A controlling station for one or more cells in a cellular telecommunications system, comprising a transmitter and an antenna arrangement with a first number of antennas, each of which is adapted to cover one of a number of adjacent cells, in which each antenna has a beamwidth such that the main beam extends by a certain amount into two cells which are immediately adjacent on each side of the cell which the antenna is adapted to cover, the controlling station configured to:
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transmit on a control channel on a first number of antennas which cover non-adjacent cells; measure the output power which is transmitted on the traffic channels on each of said first number of antennas; if the measured total traffic channel output power on any of said first number of antenna is above a first predefined threshold, transmission on the control channel is activated on a second number of antennas; measure the traffic channel output power on each of the antennas in the antenna arrangement; and if the measured traffic channel output power on an antenna is below a second predefined threshold and the traffic channel on the antennas of both adjacent cells is active, the control channel transmissions on that antenna are deactivated. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for use in a controlling station of one or more cells in a cellular telecommunications system, the method comprising equipping the controlling station with an antenna arrangement with a first number of antennas, each of which is adapted to cover one of a number of adjacent cells, with each antenna having a beamwidth such that the main beam extends by a certain amount into two cells which are immediately adjacent on each side of the cell which the antenna is adapted to cover;
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transmitting on a control channel on a first number of antennas which cover non-adjacent cells; measuring the output power which is transmitted on the traffic channels on each of said first number of antennas; checking if the measured total traffic channel output power on any of said first number of antenna is above a first predefined threshold (T1), and if that is the case, activating transmission on the control channel on a second number of antennas; measuring the traffic channel output power on each of the antennas in the antenna arrangement; and deactivating the control channel transmissions on an antenna of a cell if the measured traffic channel output power on that antenna is below a second predefined threshold and the traffic channel on the antennas of both adjacent cells is active. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification