System for determining RF path loss between an RF source and an RF receiver with hysteresis and related methods
First Claim
1. A test method for determining radio frequency (RF) path loss between an RF source and an RF receiver for a given RF channel in a given RF frequency band, the RF source transmitting RF power values at a relatively fine granularity, the RF receiver generating received signal strength indicator (RSSI) values at a relatively coarse granularity and having an unknown hysteresis about each transition between adjacent RSSI values, the test method comprising:
- determining a pair of hysteresis edges about a given RSSI value transition at the RF receiver by sweeping RF power values transmitted from the RF source in increasing and decreasing directions;
determining a relationship between the relatively fine granularity RF power values and the relative coarse granularity RSSI values using the hysteresis transition edges; and
determining the RF path loss for the given channel based upon a given RSSI at a given RF power value and the relationship between the relatively fine granularity RF power values and the relative coarse granularity RSSI values.
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Accused Products
Abstract
A test method is for determining RF path loss between an RF source and an RF receiver. The RF source may transmit RF power values at a relatively fine granularity, and the RF receiver may generate RSSI values at a relatively coarse granularity and have an unknown hysteresis about each transition between adjacent RSSI values. Hysteresis edges may be determined about a given RSSI value transition at the RF receiver by sweeping RF power values transmitted from the RF source in increasing and decreasing directions. A relationship between the relatively fine granularity RF power values and the relative coarse granularity RSSI values may be determined using the hysteresis transition edges. The RF path loss for a given channel may be determined based upon a given RSSI at a given RF power value and the relationship between the relatively fine granularity RF power values and the relative coarse granularity RSSI values.
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Citations
24 Claims
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1. A test method for determining radio frequency (RF) path loss between an RF source and an RF receiver for a given RF channel in a given RF frequency band, the RF source transmitting RF power values at a relatively fine granularity, the RF receiver generating received signal strength indicator (RSSI) values at a relatively coarse granularity and having an unknown hysteresis about each transition between adjacent RSSI values, the test method comprising:
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determining a pair of hysteresis edges about a given RSSI value transition at the RF receiver by sweeping RF power values transmitted from the RF source in increasing and decreasing directions; determining a relationship between the relatively fine granularity RF power values and the relative coarse granularity RSSI values using the hysteresis transition edges; and determining the RF path loss for the given channel based upon a given RSSI at a given RF power value and the relationship between the relatively fine granularity RF power values and the relative coarse granularity RSSI values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A test method for determining radio frequency (RF) path loss between an RF source and an RF receiver for a given RF channel in a given RF frequency band, the RF source transmitting RF power values at a relatively fine granularity, the RF receiver generating received signal strength indicator (RSSI) values at a relatively coarse granularity and having an unknown hysteresis about each transition between adjacent RSSI values, the test method comprising:
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transmitting from the RF source at an initial RF power level and measuring a corresponding initial RSSI value of the RF receiver and setting an initial internal amplification of the RF source based upon a difference between the initial RF power level and the corresponding initial RSSI value. determining a pair of hysteresis edges about a given RSSI value transition at the RF receiver by sweeping RF power values transmitted from the RF source in increasing and decreasing directions, and in progressively decreasing intervals of RF power values; determining a relationship between the relatively fine granularity RF power values and the relative coarse granularity RSSI values using the hysteresis transition edges; and determining the RF path loss for the given channel based upon a given RSSI at a given RF power value and the relationship between the relatively fine granularity RF power values and the relative coarse granularity RSSI values. - View Dependent Claims (12, 13, 14)
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15. A test system for determining radio frequency (RF) path loss comprising:
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an RF source transmitting RF power values at a relatively fine granularity for a given RF channel in a given RF frequency band; an RF receiver generating received signal strength indicator (RSSI) values at a relatively coarse granularity and having an unknown hysteresis about each transition between adjacent RSSI values; and a test controller coupled to said RF receiver and said RF source for determining a pair of hysteresis edges about a given RSSI value transition of said RF receiver based upon sweeping RF power values transmitted from the RF source in increasing and decreasing directions, determining a relationship between the relatively fine granularity RF power values and the relative coarse granularity RSSI values using the hysteresis transition edges, and determining the RF path loss for the given channel based upon a given RSSI at a given RF power value and the relationship between the relatively fine granularity RF power values and the relative coarse granularity RSSI values. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification