System and method for minimizing hardware and maximizing capacity in a wireless communications system
First Claim
1. A system for improving efficiency of a wireless communications network employing a plurality of frequencies per cell comprising:
- first means for monitoring a network load associated with each of said plurality of frequencies and providing corresponding status values in response thereto;
second means for comparing said status values to a predetermined criterion and providing an indication in response thereto when one or more of said status values meet said criterion;
third means for redistributing said network load in accordance with said indication, the third means including determining which mobile stations are within an inner coverage area of a cell based on whether round trip delays (RTD) of the mobile stations are less than a threshold, and initiating handoff of at least one mobile station that meets a predetermined handoff criterion within the inner coverage area to a different frequency on the cell, wherein said predetermined handoff criterion comprises said at least one mobile station being serviced by a frequency with a predetermined status value, said at least one mobile station comprising a single pilot signal in an active set and said at least one mobile station comprising an RTD that is less than an RTD threshold; and
fourth means for ranking said plurality of frequencies, wherein the ranking of a particular frequency is determined by the number of additional frequencies that overlap the particular frequency.
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Accused Products
Abstract
A system for improving the efficiency of a wireless communications network that employs a plurality of frequencies per cell. The system includes a first mechanism that monitors the network load associated with each of the plurality of frequencies and provides corresponding status values in response thereto. A second mechanism compares the status values to predetermined loading criteria and provides an indication in response thereto when one or more of the status values meet the criteria. A third mechanism redistributes the network load in accordance with the indication. In a specific embodiment, the criteria include one or more predetermined thresholds such that when one or more of the predetermined thresholds is surpassed by the one or more of the status values, the criteria are met. The status values are representative of loading conditions for communications system resources associated with each of the frequencies. The loading conditions are representative of currently available resources allocated for each of the plurality of frequencies. Each status value includes a hardware resource component, an air link resource component, and a handling resource component. Each component is indicative of respective remaining resources. The hardware resource component incorporates the number of currently available channel elements for an associated frequency. The air link resource component incorporates transmit power available for a particular frequency. The handling resource component incorporates the number of available Walsh codes for a particular frequency.
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Citations
32 Claims
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1. A system for improving efficiency of a wireless communications network employing a plurality of frequencies per cell comprising:
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first means for monitoring a network load associated with each of said plurality of frequencies and providing corresponding status values in response thereto; second means for comparing said status values to a predetermined criterion and providing an indication in response thereto when one or more of said status values meet said criterion; third means for redistributing said network load in accordance with said indication, the third means including determining which mobile stations are within an inner coverage area of a cell based on whether round trip delays (RTD) of the mobile stations are less than a threshold, and initiating handoff of at least one mobile station that meets a predetermined handoff criterion within the inner coverage area to a different frequency on the cell, wherein said predetermined handoff criterion comprises said at least one mobile station being serviced by a frequency with a predetermined status value, said at least one mobile station comprising a single pilot signal in an active set and said at least one mobile station comprising an RTD that is less than an RTD threshold; and fourth means for ranking said plurality of frequencies, wherein the ranking of a particular frequency is determined by the number of additional frequencies that overlap the particular frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. An efficient wireless communications system that accommodates a plurality of frequencies per cell comprising:
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first means for establishing communications between a wireless communications device and a second communications device via allocation of communications system resources associated with a given frequency; second means for monitoring said resources associated with said given frequency and providing a signal when said resources match a predetermined criterion; third means for transferring said communications from said given frequency to a target frequency in response to said signal, the third means including determining whether the wireless communications device is within an inner coverage area of a cell based on whether round trip delay (RTD) of the wireless communications device is less than a threshold, and initiating handoff of the wireless communications device if it meets a predetermined handoff criterion to the target frequency, wherein said predetermined handoff criterion comprises said wireless communications device being serviced by a frequency with a predetermined status_value, said wireless communications device comprising a single pilot signal in an active set and said wireless communications device comprising an RTD that is less than an RTD threshold; and fourth means for ranking a plurality of frequencies, wherein the ranking of a particular frequency is determined by the number of additional frequencies that overlap the particular frequency. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30)
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31. A system for strategically distributing communications system resources in a wireless communications system comprising:
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first means for monitoring traffic in a cell of said wireless communications system, said cell associated with a plurality of frequencies, each frequency associated with a predetermined geographic region within said cell that may overlap one or more geographic regions within said cell; second means for monitoring system resources in said cell and providing a resource status indication in response thereto; third means for comparing said resource status indication to predetermined criteria and providing a load reassignment command in response thereto; fourth means for selectively reassigning network load among said plurality of frequencies in response to said load reassignment command to maintain said system resource status indication in concurrence with said criteria, the fourth means including determining which mobile stations are within an inner geographic region of the cell based on whether round trip delays (RTD) of the mobile stations are less than a threshold, and initiating handoff of at least one mobile station that meets a predetermined handoff criterion within the inner geographic region to a different frequency on the cell, wherein said predetermined handoff criterion comprises said at least one mobile station being serviced by a frequency with a predetermined status value, said at least one mobile station comprising a single pilot signal in an active set and said at least one mobile station comprising an RTD that is less than an RTD threshold; and fifth means for ranking said plurality of frequencies, wherein the ranking of a particular frequency is determined by the number of additional frequencies that overlap the particular frequency.
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32. A method for improving the efficiency of a wireless communications network that has a cell that accommodates a plurality of frequencies comprising the steps of:
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monitoring network load associated with each of said plurality of frequencies and providing corresponding status values in response thereto; comparing said status values to predetermined thresholds and providing an indication in response thereto when one or more of said status values exceeds one or more of said predetermined thresholds; redistributing said network load in accordance with said indication, wherein redistributing said network load includes determining which mobile stations are within an inner coverage area of the cell based on whether round trip delays (RTD) of the mobile stations are less than a threshold, and initiating handoff of at least one mobile station that meets a predetermined handoff criterion within the inner coverage area to a different frequency on the cell, wherein said predetermined handoff criterion comprises said at least one mobile station being serviced by a frequency with a predetermined status value, said at least one mobile station comprising a single pilot signal in an active set and said at least one mobile station comprising an RTD that is less than an RTD threshold; and ranking said plurality of frequencies, wherein the ranking of a particular frequency is determined by the number of additional frequencies that overlap the particular frequency.
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Specification