Determining actual loop gain in a distributed antenna system (DAS)
First Claim
1. A method for measuring actual loop gain in a wireless distribution system, comprising:
- disconnecting a downlink path into a first contact point and a second contact point;
providing at least one test signal having a first power level from the first contact point to at least one remote antenna unit (RAU) on the downlink path;
receiving at least one loopback test signal having a second power level from the second contact point;
determining a difference between the first power level of the at least one test signal at the first contact point and the second power level of the at least one loopback test signal at the second contact point;
determining an actual loop gain of the wireless distribution system based on the determined difference between the first power level and the second power level; and
recording the actual loop gain of the wireless distribution system in at least one storage medium.
2 Assignments
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Accused Products
Abstract
In a wireless distribution system, a test signal(s) having a first power level is injected from a first contact point. The test signal(s) is configured to propagate from the first contact point to a second contact point over a downlink path and an uplink path, thus creating a signal loop(s). A second power level of the test signal(s) is measured at the second contact point, and an actual loop gain of the wireless distribution system is determined by subtracting the first power level from the second power level. By determining the actual loop gain of the wireless distribution system, it is possible to further determine a gain margin of the wireless distribution system. Based on the gain margin, it is possible to determine optimization possibilities for the wireless distribution system to maximize capacity and performance of the wireless distribution system.
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Citations
20 Claims
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1. A method for measuring actual loop gain in a wireless distribution system, comprising:
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disconnecting a downlink path into a first contact point and a second contact point; providing at least one test signal having a first power level from the first contact point to at least one remote antenna unit (RAU) on the downlink path; receiving at least one loopback test signal having a second power level from the second contact point; determining a difference between the first power level of the at least one test signal at the first contact point and the second power level of the at least one loopback test signal at the second contact point; determining an actual loop gain of the wireless distribution system based on the determined difference between the first power level and the second power level; and recording the actual loop gain of the wireless distribution system in at least one storage medium. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for measuring actual loop gain in a wireless distribution system, comprising:
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disconnecting a downlink path into a first contact point and a second contact point; providing at least one test signal having a first power level from the first contact point to at least one remote unit on the downlink path; receiving at least one loopback test signal having a second power level from the second contact point; determining a difference between the first power level of the at least one test signal at the first contact point and the second power level of the at least one loopback test signal at the second contact point; determining an actual loop gain of the wireless distribution system based on the determined difference between the first power level and the second power level; and providing the at least one test signal corresponding to a frequency spectrum that includes at least one downlink frequency band having a downlink center frequency and at least one uplink frequency band having an uplink center frequency. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method for measuring actual loop gain in a wireless distribution system, comprising:
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disconnecting a downlink path into a first contact point and a second contact point; providing at least one test signal having a first power level from the first contact point to at least one remote unit on the downlink path, wherein the at least one remote unit comprises at least one optical-to-electrical converter and at least one electrical-to-optical converter; receiving at least one loopback test signal having a second power level from the second contact point; determining a difference between the first power level of the at least one test signal at the first contact point and the second power level of the at least one loopback test signal at the second contact point; and determining an actual loop gain of the wireless distribution system based on the determined difference between the first power level and the second power level. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification