Method and system for generating a contour
In one embodiment, a method is provided. The method comprises determining a free space path loss distance at a frequency of a transmitter; determining a morphology class for a geographic location of the transmitter; determining a scaling factor P corresponding to the determined morphology class; determining a circular analysis region based upon the scaling factor P; and generating a contour.
1. A method, comprising:
determining a free space path loss distance at a frequency of a transmitter;
determining a morphology class, comprising one of rural, suburban, and urban, for a geographic location of the transmitter;
determining a scaling factor P, comprising one of P urban , P suburban , and P rural , wherein P urban is a scaling factor for an urban morphology, P suburban is a scaling factor for a suburban morphology and rural, is P rural , a scaling factor for a rural morphology, and, wherein
0< P urban <P suburban <P rural <1
determining a circular analysis region based upon the scaling factor P and having a radius; and
generating a contour for a power level emitted by the transmitter, where the contour is configured to be used to manage interference generated by the transmitter and has a maximum radial distance that is less than the radius.
2. The method of claim 1 , wherein determining the free space path loss distance at the frequency of the transmitter comprises determining:
R
FSPL
=
10
(
PL
-
20
log
10
f
-
k
20
)
,
where PL=txPower+Gain−rxPower, and
the R FSPL , is the free space path loss distance, the f is the frequency of the transmitter, the PL is path loss in decibels, the txPower is transmitter power in decibels, referenced to a reference power level, per a unit frequency, the Gain is antenna gain in decibels, and the rxPower is a propagated power level equal to a first threshold level in decibels, referenced to the reference power level, per the unit frequency.
3. The method of claim 1 , wherein determining the scaling factor P comprises determining whether the transmitter is inside of a building; and
when the transmitter is inside of the building, then determining the scaling factor P further comprises multiplying the scaling factor P by P indoor , where the P indoor is less than one.
4. A system, comprising:
state machine circuitry, wherein the state machine circuitry is configured:
determine a free space path loss distance at a frequency of a transmitter;
determine a morphology class, comprising one of rural, suburban, and urban, for a geographic location of the transmitter;
determine a scaling factor P, comprising one of P urban , P suburban , and P rural , wherein P urban is a scaling factor for an urban morphology, P suburban is a scaling factor for a suburban morphology and P rural , is a scaling factor for a rural morphology, and wherein
0< P urban <P suburban <P rural <1
determine a circular analysis region based upon the scaling factor P and having a radius; and
determine a contour, for a power level emitted by the transmitter, having a maximum radial distance that is less than the radius, where the state machine circuitry is further configured to use the contour to manage interference generated by the transmitter.
5. The system of claim 4 , wherein the state machine circuitry comprises:
at least one processor circuit; and
at least one memory circuit coupled to the at least one processor circuit.
6. The system of claim 4 , wherein determine the free space path loss distance at the frequency of the transmitter comprises determine:
R
FSPL
=
10
(
PL
-
20
log
10
f
-
k
20
)
,
where PL=txPower+Gain−rxPower, and
the R FSPL , is the free space path loss distance, the f is the frequency of the transmitter, the PL is path loss in decibels, the txPower is transmitter power in decibels, referenced to a reference power level, per a unit frequency, the Gain is antenna gain in decibels, and the rxPower is a propagated power level equal to a first threshold level in decibels, reference to the reference power level, per the unit frequency.
7. The system of claim 4 , wherein determine the scaling factor P comprises determine whether the transmitter is inside of a building; and
when the transmitter is inside of the building, then determine the scaling factor P further comprises multiplying the scaling factor P by P indoor , where the P indoor is less than one.
8. A computer program product comprising a non-transitory processor readable medium on which program instructions are embodied, wherein the program instructions are configured, when executed by at least one programmable processor, to cause the at least one programmable processor to:
determine a free space path loss distance at a frequency of a transmitter;
determine a morphology class, comprising one of rural, suburban, and urban, for a geographic location of the transmitter;
determine a scaling factor P, comprising one of P urban , P suburban , and P rural , wherein P urban is a scaling factor for an urban morphology, P suburban is a scaling factor for a suburban morphology and P rural , is a scaling factor for a rural morphology, and,
wherein 0<P urban <P suburban <P rural <1
determine a circular analysis region based upon the scaling factor P and having a radius; and
generate a contour for a power level emitted by the transmitter, where the contour is configured to be used to manage interference generated by the transmitter and has a maximum radial distance that is less than the radius.
9. The computer program product of claim 8 , wherein determine the free space path loss distance at the frequency of the transmitter comprises determine:
R
FSPL
=
10
(
PL
-
20
log
10
f
-
k
20
)
,
where PL=txPower+Gain−rxPower, and
the R FSPL , is the free space path loss distance, the f is the frequency of the transmitter, the PL is path loss in decibels, the txPower is transmitter power in decibels (referenced to a reference power level) per a unit frequency, the Gain is antenna gain in decibels, and the rxPower is a propagated power level equal to a first threshold level in decibels (reference to the reference power level) per the unit frequency.
10. The computer program product of claim 8 , wherein determine the scaling factor P comprises determine whether the transmitter is inside of a building; and
when the transmitter is inside of the building, then determine the scaling factor P further comprises multiplying the scaling factor P by P indoor , where the P indoor is less than one.