System and method for obtaining optimum RF performance when co-siting cellular base stations
First Claim
1. A method of obtaining optimum RF performance for a slave base station when co-siting a master base station with said slave base station, said method comprising:
- calculating the third order intercept (IP3) characteristics of the slave base station that is sharing an antenna assembly with said master base station;
calculating the noise figure (NF) characteristics of the slave base station;
plotting the IP3 and NF characteristics of the slave base station versus a range of upfront gain values;
selecting a desired upfront gain value to achieve a particular IP3 and NF characteristic; and
adjusting the upfront gain supplied to the slave base station to match the desired upfront gain.
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Accused Products
Abstract
A method of obtaining optimum RF performance for a slave base station when co-siting a master base station with said slave base station involves calculating operating characteristics of the slave base station that is sharing an antenna assembly with the master base station. The third order intercept (IP3) and the noise figure (NF) characteristics of the slave base station are calculated and plotted versus a range of upfront gain values. The plots are studied and compared against vendor specifications and standalone performance characteristics. A desired upfront gain value is then selected to achieve a particular IP3 and NF characteristic for the slave base station. Upon selection, the upfront gain supplied to the slave base station is adjusted via an attenuator placed in-line before the slave base station to match the desired upfront gain.
20 Citations
17 Claims
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1. A method of obtaining optimum RF performance for a slave base station when co-siting a master base station with said slave base station, said method comprising:
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calculating the third order intercept (IP3) characteristics of the slave base station that is sharing an antenna assembly with said master base station;
calculating the noise figure (NF) characteristics of the slave base station;
plotting the IP3 and NF characteristics of the slave base station versus a range of upfront gain values;
selecting a desired upfront gain value to achieve a particular IP3 and NF characteristic; and
adjusting the upfront gain supplied to the slave base station to match the desired upfront gain. - View Dependent Claims (2, 3, 4)
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5. A system for obtaining optimum RF performance for a slave base station when co-siting a master base station with said slave base station, said system comprising:
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means for calculating the third order intercept (IP3) characteristics of the slave base station that is sharing an antenna assembly with said master base station;
means for calculating the noise figure (NF) characteristics of the slave base station;
means for plotting the IP3 and NF characteristics of the slave base station versus a range of upfront gain values;
means for selecting a desired upfront gain value to achieve a particular IP3 and NF characteristic; and
means for adjusting the upfront gain supplied to the slave base station to match the desired upfront gain. - View Dependent Claims (6, 7, 8)
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9. A system for obtaining optimum RF performance for a slave base station when co-siting a master base station with said slave base station, said system comprising:
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a slave base station coupled by an electrical cable to an antenna assembly via an antenna sharing unit within a master base station;
an attenuator coupled to said electrical cable for adjusting the upfront gain supplied to said slave base station, wherein said attenuator is adjusted according to calculations of the third order intercept (IP3) and noise figure (NF) characteristics of the slave base station. - View Dependent Claims (10, 11, 12, 13, 16)
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14. A computer program product for obtaining optimum RF performance for a slave base station when co-siting a master base station with said slave base station, the computer program product having a medium with a computer program embodied thereon, the computer program product comprising:
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computer program code for calculating the third order intercept (IP3) characteristics of the slave base station that is sharing an antenna assembly with said master base station;
computer program code for calculating the noise figure (NF) characteristics of the slave base station;
computer program code for plotting the IP3 and NF characteristics of the slave base station versus a range of upfront gain values;
computer program code for selecting a desired upfront gain value to achieve a particular IP3 and NF characteristic; and
computer program code for adjusting the upfront gain supplied to the slave base station to match the desired upfront gain. - View Dependent Claims (15, 17)
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Specification