Method and system for reducing wireless multi-cell interferences through segregated channel assignments and segregated antenna beams
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Accused Products
Abstract
A wireless communication system is disclosed. An available frequency spectrum is divided into multiple channels, a first wireless communication coverage unit is then segregated into a first number of geographical segments. After the segregated channels are grouped into a second number of channel blocks, each channel block is assigned to the segregated geographical segments with predetermined priorities. The above steps are repeated in a fashion that the channels in different channel blocks exhibit no higher mutual interference than the channels in the same channel block, and the channel block assigned for each segregated segment of the first wireless communication coverage unit is different from the channel block assigned for the segregated segment of a second wireless communication coverage unit that immediately borders with the segregated segment of the first wireless coverage unit even if the first and second wireless communication coverage units share the same frequency spectrum.
14 Citations
41 Claims
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1-11. -11. (canceled)
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12. A method for reducing multi-cell signal interferences in a wireless communication network, the method comprising:
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dividing an available frequency spectrum into a plurality of channels;
segregating a first wireless communication coverage unit into a first number of geographical segments;
grouping the channels into a second number of channel blocks;
assigning each channel block to at least one of the segregated geographical segments with predetermined priorities such that the channel blocks having a higher likelihood of mutual interference are separated farther apart to minimize the multi-cell signal interferences; and
repeating the above steps for each neighboring wireless communication coverage unit of the first wireless communication coverage unit, wherein the channels in different channel blocks exhibit no higher mutual interference than the channels in the same channel block, and wherein the channel block assigned for each segregated segment of the first wireless communication overage unit is different from the channel block assigned for the segregated segment of a second wireless communication coverage unit that immediately borders with the segregated segment of the first wireless coverage unit even if the first and second wireless communication coverage units share the same frequency spectrum wherein a location of a wireless terminal entering the first wireless communication coverage unit is detected by utilizing one or more segregated access code channels (ACCs) for the segregated geographical segments of the first wireless communication coverage unit to identify the wireless terminal wherein the ACCs and the segments bear a one-to-one relationship and wherein the channels are grouped in the same fashion for various wireless communication coverage units or in a wireless-communication-coverage-unit-dependent fashion based on a predetermined permutation scheme.
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13. A method for reducing multi-cell signal interferences in a wireless communication network, the method comprising:
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dividing an available frequency spectrum into a plurality of channels;
segregating a first wireless communication coverage unit into a first number of geographical segments;
grouping the channels into a second number of channel blocks;
assigning each channel block to at least one of the segregated geographical segments with predetermined priorities such that the channel blocks having a higher likelihood of mutual interference are separated farther apart to minimize the multi-cell signal interferences;
repeating the above steps for each neighboring wireless communication coverage unit of the first wireless communication coverage unit; and
determining a channel power for compensating a path loss of a down link between a base transceiver station and the wireless terminal, thereby ensuring signals received at the wireless terminal to have a signal-to-noise ratio higher than a predetermined valued wherein the channels in different channel blocks exhibit no higher mutual interference than the channels in the same channel block and wherein the channel block assigned for each segregated segment of the first wireless communication coverage unit is different from the channel block assigned for the segregated segment of a second wireless communication coverage unit that immediately borders with the segregated segment of the first wireless coverage unit even if the first and second wireless communication coverage units share the same frequency spectrum, wherein a location of a wireless terminal entering the first wireless communication coverage unit is detected by utilizing one or more segregated access code channels (ACCs) for the segregated geographical segments of the first wireless communication coverage unit to identify the wireless terminal wherein the ACCs and the segments bear a one-to-one relationship. - View Dependent Claims (14)
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15. A method for reducing multi-cell signal interferences in a wireless communication network, the method comprising:
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dividing an available frequency spectrum into a plurality of channels;
segregating a fist wireless communication coverage unit into a first number of geographical segments;
grouping the channels into a second number of channel blocks;
assigning each channel block to at least one of the segregated geographical segments with predetermined priorities such that the channel blocks having a higher likelihood of mutual interference are separated farmer apart to minimize the multi-cell signal interferences;
repeating the above steps for each neighboring wireless communication coverage unit of the first wireless communication coverage unit; and
determining a channel power for compensating a path loss of an up link between the wireless terminal and a base transceiver station, thereby ensuring signals received at the base transceiver station to have a signal-to-noise ratio higher than a predetermined value, and wherein the channels in different channel blocks exhibit no higher mutual interference than the channels in the same channel block, and wherein the channel block assigned for each segregated segment of the first wireless communication coverage unit is different from the channel block assigned for the segregated segment of a second wireless communication coverage unit that immediately borders with the segregated segment of the fist wireless coverage unit even if the fist and second wireless communication coverage units share the same frequency spectrum, wherein a location of a wireless terminal entering the first wireless communication coverage unit is detected by utilizing one or more segregated access code channels (ACCs) for the segregated geographical segments of the first wireless communication coverage unit to identify the wireless terminal wherein the ACCs and the segments bear a one-to-one relationship. - View Dependent Claims (16)
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17-20. -20. (canceled)
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21. A method for reducing multi-frequency signal interference in a wireless communication network, the network having a plurality of cells bordering on each other, each cell using a predetermined frequency spectrum for communications therein the method comprising:
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segregating a first cell into a first number of geographical segments;
dividing the predetermined frequency spectrum for the first cell into a plurality of channels;
establishing a channel assignment priority hierarchy for associating one or more channels to each geographical segment of the first cell;
repeating the above three steps for each cell bordering with the first cell; and
assigning channels to a terminal entering a segregated geographical segment of the first cell according to the established channel assignment priority hierarchy, wherein the channel assignment priority hierarchy for the first cell and its bordering cells assures that the assigned channels are selected from the channels associated with the geographical segment of the fist cell in which the terminal locates, and wherein the channels for such a geographical segment are different from the channels of a similarly segregated segment of another wireless cell that immediately borders therewith, and wherein the channels are grouped in the same fashion for various cells or in a cell-dependent fashion based on a predetermined permutation scheme.
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22. A method for reducing multi-frequency signal interference in a wireless communication network, the network having a plurality of cells bordering on each other, each cell using a predetermined frequency spectrum for communications therein, the method comprising:
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segregating a first cell into a first number of geographical segments;
dividing the predetermined frequency spectrum for the first cell into a plurality of channels;
establishing a channel assignment priority hierarchy associating one or more channels to each geographical segment of the first cell;
repeating the above three steps for each cell bordering with the first cell;
assigning channels to a terminal entering a segregated geographical segment of the first cell according to the established channel assignment priority hierarchy; and
determining a channel power for compensating a path loss of a down link between a base transceiver station and the terminal, thereby ensuring signals received at the terminal to have a signal-to-noise ratio higher than a predetermined value, and wherein the channel assignment priority hierarchy for the first cell and its bordering cells assures that the assigned channels are selected from the channels associated with the geographical segment of the first cell in which the terminal locates, and wherein the channels for such a geographical segment are different from the channels of a similarly segregated segment of another wireless cell that immediately borders therewith. - View Dependent Claims (23)
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24. A method for reducing multi-frequency signal interference in a wireless communication network the network having a plurality of cells bordering on each other, each cell using a predetermined frequency spectrum for communications therein, the method comprising:
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segregating a first cell into a first number of geographical segments;
dividing the predetermined frequency spectrum for the first cell into a plurality of channels;
establishing a channel assignment priority hierarchy for associating one or more channels to each geographical segment of the first cell;
repeating the above three steps for each cell bordering with the first cell;
assigning channels to a terminal entering a segregated geographical segment of the first cell according to the established channel assignment priority hierarchy; and
determining a channel power for compensating a path loss of an up link between the terminal and a base transceiver station, thereby ensuring signals received at the base transceiver station to have a signal-to-noise ratio higher than a predetermined value, and wherein the channel assignment priority hierarchy for the first cell and its bordering cells assures that the assigned channels are selected from the channels associated with the geographical segment of the first cell in which the terminal locates, and wherein the channels for such a geographical segment are different from the channels of a similarly segregated segment of another wireless cell that immediately borders therewith. - View Dependent Claims (25)
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26-36. -36. (canceled)
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37. A base station transceiver system for reducing multi-cell signal interferences in a wireless communication network comprising:
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means for dividing an available frequency spectrum into a plurality of channels;
means for segregating a first wireless communication coverage unit into a first number of geographical segments;
means for grouping the channels into the first number of channel blocks; and
means for assigning each channel block to at least one of the segregated geographical segments with predetermined priorities, wherein the channels in different channel blocks exhibit no higher mutual interference than the channels in the same channel block, and wherein the channel block assigned for each segregated segment of the first wireless communication coverage unit is different from the channel block assigned for the segregated segment of a second wireless communication coverage unit that immediately borders with the segregated segment of the first wireless coverage unit even if the first and second wireless communication coverage units share the same frequency spectrum, wherein a location of a wireless terminal entering the first wireless communication coverage unit is detected by utilizing one or more segregated access code channels (ACCs) for the segregated geographical segments of the first wireless communication coverage unit to identify the wireless terminal wherein the ACCs and the segments bear a one-to-one relationship, and wherein the channels are grouped in the same fashion for various wireless communication coverage units or in a wireless communication-coverage-unit-dependent fashion based on a predetermined permutation scheme.
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38. A base station transceiver system for reducing multi-cell signal interferences in a wireless communication network, comprising:
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means for dividing an available frequency spectrum into a plurality of channels;
means for segregating a first wireless communication coverage unit into a first number of geographical segments;
means for grouping the channels into the first number of channel blocks;
means for assigning each channel block to at least one of the segregated geographical segments with predetermined priorities; and
means for determining a channel power that compensates a path loss of a down link between a base transceiver station and the wireless terminal, thereby ensuring signals received at the wireless terminal to have a signal-to-noise ratio higher than a predetermined value, and wherein the channels in different channel blocks exhibit no higher mutual interference than the channels in the same channel block, and wherein the channel block assigned for each segregated segment of the first wireless communication coverage unit is different from the channel block assigned for the segregated segment of a second wireless communication coverage unit that immediately borders with the segregated segment of the first wireless coverage unit even if the first and second wireless communication coverage units share the same frequency spectrum, wherein a location of a wireless terminal entering the first wireless communication coverage unit is detected by utilizing one or more segregated access code channels (ACCs) for the segregated geographical segments of the first wireless communication coverage unit to identify the wireless terminal wherein the ACCs and the segments bear a one-to-one relationship. - View Dependent Claims (39)
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40. A base station transceiver system for reducing multi-cell signal interferences in a wireless communication network, comprising:
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means for dividing an available frequency spectrum into a plurality of channels means for segregating a first wireless communication coverage unit into a first number of geographical segments;
means for grouping the channels into the first number of channel blocks;
means for assigning each channel block to at least one of the segregated geographical segments with predetermined priorities; and
means for determining a channel power that compensates a path loss of an up link between the wireless terminal and a base transceiver station, thereby ensuring signals received at the base transceiver station to have a signal-to-noise ratio higher than a predetermined value, and wherein the channels in different channel blocks exhibit no higher mutual interference than the channels in the same channel blocks and wherein the channel block assigned for each segregated segment of the first wireless communication coverage unit is different from the channel block assigned for the segregated segment of a second wireless communication coverage unit that immediately borders with the segregated segment of the first wireless coverage unit even if the first and second wireless communication coverage units share the same frequency spectrum, wherein a location of a wireless terminal entering the first wireless communication coverage unit is detected by utilizing one or more segregated access code channels (ACCs) for the segregated geographical segments of the first wireless communication coverage unit to identify the wireless terminal wherein the ACCs and the segments bear a one-to-one relationship. - View Dependent Claims (41)
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Specification