Dynamic allocation of channels in a cellular telephone system
First Claim
1. In a cellular communication system comprising a plurality of cells and a plurality of channels, the plurality of channels comprising a plurality of probe channels for which interference can be measured in both uplink and downlink directions and a plurality of unmeasured channels for which interference measurements are not made in both uplink and downlink directions, a method of allocating the plurality of channels, comprising the steps of:
- organizing the plurality of channels into a plurality of channel groups, wherein each channel group comprises at least one probe channel, and wherein at least one of the channel groups further comprises at least one unmeasured channel; and
for each one of the cells, performing an allocation routine comprising the steps of;
monitoring at least one of the channel groups by making and collecting uplink and downlink interference measurements on said at least one probe channel of said at least one of the channel groups over a predetermined time period;
analyzing the collected uplink and downlink interference measurements; and
allocating a selected one of the monitored channel groups to said one cell in dependence on the analyzed uplink and downlink interference measurements.
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Abstract
A cellular communication system has a plurality of cells and a plurality of channels. The plurality of channels includes a plurality of measurable channels for which interference can be measured in both uplink and downlink directions and a plurality of unmeasured channels for which interference are not made in both uplink and downlink directions. The measurable channels, designated probe channels, may be channels for use in a digital system. The unmeasured channels may be channels for use in an analog system, or broadcast channels. A method and apparatus for allocating the plurality of channels comprises initially organizing the plurality of channels into a plurality of channel groups, wherein each channel group includes at least one probe channel, and wherein at least one of the channel groups further includes at least one unmeasured channel. Then, each one of the cells performs an allocation routine comprising the steps of monitoring at least one of the channel groups by making and collecting uplink and downlink interference measurements only on the probe channel of each monitored channel group over a predetermined time period. Then, the collected uplink and downlink interference measurements are analyzed in accordance with an adaptive channel allocation strategy. Finally, a selected one of the monitored channel groups is allocated to the cell in dependence on the analyzed uplink and downlink interference measurements. In this manner, the unmeasured channels are also subjected to an adaptive channel allocation strategy.
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Citations
18 Claims
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1. In a cellular communication system comprising a plurality of cells and a plurality of channels, the plurality of channels comprising a plurality of probe channels for which interference can be measured in both uplink and downlink directions and a plurality of unmeasured channels for which interference measurements are not made in both uplink and downlink directions, a method of allocating the plurality of channels, comprising the steps of:
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organizing the plurality of channels into a plurality of channel groups, wherein each channel group comprises at least one probe channel, and wherein at least one of the channel groups further comprises at least one unmeasured channel; and for each one of the cells, performing an allocation routine comprising the steps of; monitoring at least one of the channel groups by making and collecting uplink and downlink interference measurements on said at least one probe channel of said at least one of the channel groups over a predetermined time period; analyzing the collected uplink and downlink interference measurements; and allocating a selected one of the monitored channel groups to said one cell in dependence on the analyzed uplink and downlink interference measurements. - View Dependent Claims (2, 3, 4, 5)
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6. In a cellular communication system comprising a plurality of cells and a plurality of channels, the plurality of channels comprising a plurality of probe channels for which interference can be measured in both uplink and downlink directions and a plurality of unmeasured channels for which interference measurements are not made in both uplink and downlink directions, a method of allocating the plurality of channels, comprising the steps of:
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organizing the plurality of channels into a plurality of channel groups, wherein each channel group comprises at least one probe channel, and wherein at least one of the channel groups further comprises at least one unmeasured channel; and for each one of the cells, performing an allocation routine comprising the steps of; monitoring at least two of the channel groups by making and collecting uplink and downlink interference measurements on said at least one probe channel of each of said at least two of the channel groups over a predetermined time period; analyzing the collected uplink and downlink interference measurements by generating, for each one of said at least two of the channel groups, a filtered measurement from the uplink and downlink interference measurements collected for said each one of said at least two of the channel groups; and allocating a selected one of the monitored channel groups to said one cell in dependence on a comparison to one another of the filtered measurements of each one of said at least two of the channel groups.
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7. In a cellular communication system comprising a plurality of cells and a plurality of measurable channels for which interference can be measured in at least one of uplink and downlink directions, a method of allocating the plurality of measurable channels, comprising the steps of:
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organizing the plurality of channels into a plurality of channel groups, wherein each channel group comprises at least one measurable channel, and wherein at least one of the channel groups comprises at least two measurable channels, wherein each channel group further comprises at least one unmeasured channel; and for each one of the cells, performing an allocation routine comprising the steps of; monitoring at least one of the channel groups by making and collecting interference measurements on each one of said at least one measurable channel of said at least one of the channel groups over a predetermined time period; analyzing the collected interference measurements; and allocating a selected one of the monitored channel groups to said one cell in dependence on the analyzed interference measurements. - View Dependent Claims (8, 9)
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10. In a cellular communication system comprising a plurality of cells and a plurality of channels, the plurality of channels comprising a plurality of probe channels for which interference can be measured in both uplink and downlink directions and a plurality of unmeasured channels for which interference measurements are not made in both uplink and downlink directions, an apparatus for allocating the plurality of channels, comprising:
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means for organizing the plurality of channels into a plurality of channel groups, wherein each channel group comprises at least one probe channel, and wherein at least one of the channel groups further comprises at least one unmeasured channel; and for each one of the cells, means for performing an allocation routine comprising; means for monitoring at least one of the channel groups by making and collecting uplink and downlink interference measurements on said at least one probe channel of said at least one of the channel groups over a predetermined time period; means for analyzing the collected uplink and downlink interference measurements; and means for allocating a selected one of the monitored channel groups to said one cell in dependence on the analyzed uplink and downlink interference measurements. - View Dependent Claims (11, 12, 13, 14)
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15. In a cellular communication system comprising a plurality of cells and a plurality of channels, the plurality of channels comprising a plurality of probe channels for which interference can be measured in both uplink and downlink directions and a plurality of unmeasured channels for which interference measurements are not made in both uplink and downlink directions, an apparatus for allocating the plurality of channels, comprising:
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means for organizing the plurality of channels into a plurality of channel groups, wherein each channel group comprises at least one probe channel, and wherein at least one of the channel groups further comprises at least one unmeasured channel; and for each one of the cells, means for performing an allocation routine comprising; means for monitoring at least two of the channel groups by making and collecting uplink and downlink interference measurements on said at least one probe channel of each of said at least two of the channel groups over a predetermined time period; means for analyzing the collected uplink and downlink interference measurements by generating, for each one of said at least two of the channel groups, a filtered measurement from the uplink and downlink interference measurements collected for said each one of said at least two of the channel groups; and means for allocating a selected one of the monitored channel groups to said one cell in dependence on a comparison to one another of the filtered measurements of each one of said at least two of the channel groups.
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16. In a cellular communication system comprising a plurality of cells and a plurality of measurable channels, wherein each channel group further comprises at least one unmeasured channel for which interference can be measured in at least one of uplink and downlink directions, an apparatus for allocating the plurality of measurable channels, comprising:
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means for organizing the plurality of channels into a plurality of channel groups, wherein each channel group comprises at least one measurable channel, and wherein at least one of the channel groups comprises at least two measurable channels; and for each one of the cells, means for performing an allocation routine comprising; means for monitoring at least one of the channel groups by making and collecting interference measurements on each one of said at least one measurable channel of said at least one of the channel groups over a predetermined time period; means for analyzing the collected interference measurements; and means for allocating a selected one of the monitored channel groups to said one cell in dependence on the analyzed interference measurements. - View Dependent Claims (17, 18)
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Specification