System and method for increasing area density of terrestrial broadcast stations
First Claim
1. A method for increasing the area density of broadcast stations having respective service areas and broadcasting on the same channel without exceeding a specified level of co-channel interference within the service areas, the broadcast stations comprising a first broadcast station and a second broadcast station, the method comprising:
- monitoring the field strength of the signal transmitted by the first broadcast station, wherein the monitoring comprises monitoring the field strength of the signal transmitted by the first broadcast station at a location outside the service area of the first broadcast station;
and in response to the monitoring, controlling a field strength determining property of the first broadcast station in a manner that causes the first broadcast station to provide a field strength greater than a threshold field strength within the service area of the first broadcast station yet prevents a 99th percentile propagation boundary of the first broadcast station from entering the service area of the second broadcast station notwithstanding changes in propagation conditions.
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Accused Products
Abstract
The area density of broadcast stations having respective service areas and broadcasting on the same channel is increased without exceeding a specified level of co-channel interference within the service areas by a method in which the field strength of the signal transmitted by the first broadcast station is monitored, and a field strength determining property of the first broadcast station is controlled in response to the monitoring.
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Citations
26 Claims
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1. A method for increasing the area density of broadcast stations having respective service areas and broadcasting on the same channel without exceeding a specified level of co-channel interference within the service areas, the broadcast stations comprising a first broadcast station and a second broadcast station, the method comprising:
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monitoring the field strength of the signal transmitted by the first broadcast station, wherein the monitoring comprises monitoring the field strength of the signal transmitted by the first broadcast station at a location outside the service area of the first broadcast station; and in response to the monitoring, controlling a field strength determining property of the first broadcast station in a manner that causes the first broadcast station to provide a field strength greater than a threshold field strength within the service area of the first broadcast station yet prevents a 99th percentile propagation boundary of the first broadcast station from entering the service area of the second broadcast station notwithstanding changes in propagation conditions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 25)
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14. A system for reducing minimum distance separation between a first broadcast station and a second broadcast station transmitting in the same channel without exceeding a specified level of co-channel interference in the service areas of the broadcast stations, the system comprising:
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a field strength monitor operable to measure the field strength of the signal transmitted by the first broadcast station wherein the field strength monitor is configured to measure the field strength of the signal transmitted by the first broadcast station at a location outside the service area of the first broadcast station; and a controller operable in response to the field strength monitor to control a field strength determining property of the first broadcast station in a manner that causes the first broadcast station to provide a field strength greater than a threshold field strength within the service area of the first broadcast station yet prevents a 99th percentile propagation boundary of the first broadcast station from entering the service area of the second broadcast station notwithstanding changes in propagation conditions. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 26)
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Specification