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US 8,620,301 B1Granted
Radiated wave measurement with supporting calibration
OwnerSteven Ray Hesselinventor
Life of this patent
Estimating the term…
Abstract
A process and apparatus that are described measure characteristics of radiated waves in an uncontrolled environment. These measurements are useful for the design of communications installations (site surveys) among other signal measurement applications.
Claims28
A method for measuring properties of a measured link over which signals in the form of radiated waves travel, comprising:
- providing at least one antenna of a transmitting communication measurement instrument at one end of a path that is to be measured
- providing at least one antenna of a receiving communication measurement instrument at the other end of said path that is to be measured,
- transmitting a signal having one or more properties from said transmitting communication measurement instrument which includes a measured link transmitter to said receiving communication measurement instrument which includes a measured link receiver,
- using said communication measurements to measure received signal power (RSP) and throughput,
- measuring indirectly a measured link property selected from the group consisting of:
- means for making indirect measured link measurements of received signal strength, and
- measuring indirectly at least one of transfer properties or throughput from direct measurements of received signal power (RSP).
4 more elements
A method, for emulating a candidate receiver:
- providing at least one antenna of a transmitting communication measurement instrument at one end of a path that is to be measured,
- providing at least one antenna of a receiving communication measurement instrument at the other end of said path that is to be measured,
- transmitting a signal having one or more properties from said transmitting communication measurement instrument which includes a measured link transmitter to said receiving communication measurement instrument which includes a measured link receiver,
- using said communication measurement instruments for measuring directly one or more properties of said signal;
- obtaining received signal strength measurements of said signal from said direct measurements
- providing one or more attenuating devices between the measured link receiver input and the receiver antenna.
3 more elements
A method for measuring properties of a measured link over which signals in the form of radiated waves travel, comprising:
- providing at least one antenna of a transmitting communication measurement instrument at one end of a path that is to be measured
- providing at least one antenna of a receiving communication measurement instrument at the other end of said path that is to be measured,
- transmitting a signal having one or more properties from said transmitting communication measurement instrument which includes a measured link transmitter to said receiving communication measurement instrument which includes a measured link receiver,
- adjusting one or more parameters that control packet size to increase the proportion of packets on the measured link that have a common size.
1 more element
A method, for measuring the effect of interference that is not coherent comprising:
- providing at least one antenna of a transmitting communication measurement instrument at one end of a path that is to be measured,
- providing at least one antenna of a receiving communication measurement instrument at the other end of said path that is to be measured,
- transmitting a signal having one or more properties from said transmitting communication measurement instrument which includes a measured link transmitter to said receiving communication measurement instrument which includes a measured link receiver,
- using said communication measurement instruments for measuring directly one or more properties of said signal in the presence of said interference that is not coherent;
- obtaining measured link measurements of said signal from the direct measurements made in the presence of said interference that is not coherent.
2 more elements
A method, for measuring the effect of coherent interference comprising:
- providing at least one antenna of a transmitting communication measurement instrument at one end of a path that is to be measured,
- providing at least one antenna of a receiving communication measurement instrument at the other end of said path that is to be measured,
- transmitting a signal having one or more properties from said transmitting communication measurement instrument which includes a measured link transmitter to said receiving communication measurement instrument which includes a measured link receiver,
- using said communication measurement instruments for measuring directly one or more properties of said signal;
- obtaining received signal strength measurements of said signal from said direct measurements;
- measuring at a plurality of locations with at least one of the antennas at one end of said path, which locations are close enough together that two or more of the signals traveling between the transmitting antenna or antennas, and the receiving antenna or antennas on different paths, arrive at the one or more receiving locations with amplitudes that may be dependent upon said path taken, but are approximately independent of said location.
3 more elements
A method, for avoiding the altering of one or more measured link measurements comprising:
- providing at least one antenna of a transmitting communication measurement instrument at one end of a path that is to be measured,
- providing at least one antenna of a receiving communication measurement instrument at the other end of said path that is to be measured,
- transmitting a signal having one or more properties from said transmitting communication measurement instrument which includes a measured link transmitter to said receiving communication measurement instrument which includes a measured link receiver,
- using said communication measurement instruments for measuring directly one or more properties of said signal;
- obtaining one or more predetermined measured link measurement of said signal from said direct measurements;
- said predetermined measured link measurement being a measured link measurement which would have been significantly altered if a large volume of data containing useful information were to be conveyed in addition to test data in the same band of frequencies as used by the measured link when a measurement was being made on the measured link,
- conveying said data containing useful information from a first communication measurement instrument to a second communication measurement instrument in a manner that said data containing useful information does not significantly alter said predetermined measured link measurement made on said measured link.
4 more elements
Dependencies are inferred from the claim text.