Method and apparatus for removing a sector from an active set
First Claim
1. A method for managing communication between one or more base transceiver stations and a mobile station, said communication occurring on an active set of cell sectors, comprising steps of:
- a) conducting a test at a base transceiver station wherein the base transceiver station intentionally eliminates communication from the base transceiver station to the mobile station on a selected sector in the active set;
b) determining the effect of the elimination of step a) on communication between the mobile station and at least one other remaining sector in the active set;
c) either restoring communication on the active set or removing the active set sector from the set of active set sectors, based on the determination in step b); and
wherein the selected sector for which communication is eliminated in a) comprises the active set sector which has the current lowest reported mobile stationreceived power level; and
storing a history of removal of active set sectors for a plurality of mobile stations, theremovals made using step c).
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Accused Products
Abstract
Communication on a sector in a mobile station'"'"'s active set is eliminated in order to test whether such elimination has a sufficiently adverse impact on RF communication with the mobile station on the remaining sectors in the active set. If it is determined that the elimination of the sector has a sufficiently adverse impact, communication on the sector is restored. Otherwise, the sector is removed from the mobile station'"'"'s active set, thereby freeing up soft hand-off resources including a channel element and a Walsh code for use by other mobile stations. In one embodiment, if the mobile station seeks to add the removed sector back into its active set, the add-request is denied if the mobile station is stationary, but accepted if the mobile station is moving.
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Citations
18 Claims
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1. A method for managing communication between one or more base transceiver stations and a mobile station, said communication occurring on an active set of cell sectors, comprising steps of:
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a) conducting a test at a base transceiver station wherein the base transceiver station intentionally eliminates communication from the base transceiver station to the mobile station on a selected sector in the active set; b) determining the effect of the elimination of step a) on communication between the mobile station and at least one other remaining sector in the active set; c) either restoring communication on the active set or removing the active set sector from the set of active set sectors, based on the determination in step b); and wherein the selected sector for which communication is eliminated in a) comprises the active set sector which has the current lowest reported mobile station received power level; and storing a history of removal of active set sectors for a plurality of mobile stations, the removals made using step c). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for managing communication between one or more base transceiver stations and a mobile station, said communication occurring on an active set of cell sectors, comprising steps of:
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a) conducting a test at a base transceiver station wherein the base transceiver station intentionally eliminates communication from the base transceiver station to the mobile station on a selected sector in the active set; b) determining the effect of the elimination of step a) on communication between the mobile station and at least one other remaining sector in the active set; c) either restoring communication on the active set or removing the active set sector from the set of active set sectors, based on the determination in step b); wherein the selected sector in step a) is selected based on utilization of active set sectors in a reverse link from the mobile station to the one or more base transceiver stations; and storing a history of removal of active set sectors for a plurality of mobile stations, the removals made using step c).
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12. A method for managing communication between one or more base transceiver stations and a mobile station, said communication occurring on an active set of cell sectors, comprising steps of:
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a) conducting a test at a base transceiver station wherein the base transceiver station intentionally eliminates communication from the base transceiver station to the mobile station on a selected sector in the active set; b) determining the effect of the elimination of step a) on communication between the mobile station and at least one other remaining sector in the active set; c) either restoring communication on the active set or removing the active set sector from the set of active set sectors, based on the determination in step b); and storing a history of removal of active set sectors for a plurality of mobile stations, the removals made using step c).
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13. A method for managing communication between one or more base transceiver stations and a mobile station, said communication occurring on an active set of cell sectors, comprising steps of:
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a) conducting a test at a base transceiver station wherein the base transceiver station intentionally eliminates communication from the base transceiver station to the mobile station on a selected sector in the active set; b) determining the effect of the elimination of step a) on communication between the mobile station and at least one other remaining sector in the active set; c) either restoring communication on the active set or removing the active set sector from the set of active set sectors, based on the determination in step b); and receiving a request from a mobile station to add a sector to an active set, wherein the sector requested to be added is one in which communication was previously removed in accordance with step c), and wherein the method further comprises the step of denying the request. - View Dependent Claims (14)
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15. A method for managing communication between one or more base transceiver stations and a mobile station, said communication occurring on an active set of cell sectors, comprising steps of:
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a) conducting a test at a base transceiver station wherein the base transceiver station intentionally eliminates communication from the base transceiver station to the mobile station on a selected sector in the active set; b) determining the effect of the elimination of step a) on communication between the mobile station and at least one other remaining sector in the active set; c) either restoring communication on the active set or removing the active set sector from the set of active set sectors, based on the determination in step b); and receiving a request from a mobile station to add a sector to an active set, wherein the sector requested to be added is one in which communication was previously removed in accordance with step c), and wherein the method further comprises the step of granting the request, and wherein the request is granted based on a determination that the mobile station has substantially moved in the time between the removal of the sector in step (c) and the time the request to add the sector is received.
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16. In a system of one or more base transceiver stations for communication with a mobile station via a set of active set sectors, comprising steps of:
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a processing element and a memory storing machine readable instructions for execution by the processing element, the instructions for causing; a) one of the base transceiver stations to conduct a test wherein the base transceiver station intentionally eliminates communication with the mobile station on a selected sector in an active set of sectors; b) a determination of the effect of the elimination in a) on communication between the mobile station and at least one other remaining sector in the active set; and c) either a restoration of communication on the selected sector or a removal of the selected sector from the active set based on the determination in b);
wherein the system receives a request from a mobile station to add a sector to an active set, wherein the sector requested to be added is one in which communication was removed in accordance with instructions c), and wherein the request is denied. - View Dependent Claims (17)
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18. In a system of one or more base transceiver stations for communication with a mobile station via a set of active set sectors, comprising steps of:
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a processing element and a memory storing machine readable instructions for execution by the processing element, the instructions for causing; a) one of the base transceiver stations to conduct a test wherein the base transceiver station intentionally eliminates communication with the mobile station on a selected sector in an active set of sectors; b) a determination of the effect of the elimination in a) on communication between the mobile station and at least one other remaining sector in the active set; and c) either a restoration of communication on the selected sector or a removal of the selected sector from the active set based on the determination in b);
wherein the system receives a request from a mobile station to add a sector to an active set, wherein the sector requested to be added is one in which communication was removed in accordance with instructions c), and wherein the instructions further cause a granting of the request, and wherein the request is granted when a determination is made that the mobile station has substantially moved in the time between the removal of the sector in accordance with instructions (c) and the time the request to add the sector is received.
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Specification