Verification test method for timeslot interval at second switching point of repeater

Abstract

The invention relates to a time slot interval verification test method of a second switching point of a TD-SCDMA repeater. The method comprises the following steps: an uplink signal and a downlink signal are mixed to be sent to a spectroanalyzer to carry out the verification on the time slot interval of the second switching point; downlink anticipated open quantity, downlink anticipated open jitter quantity, uplink lag shut quantity, uplink lag shut jitter quantity and time interval quantity of uplink-downlink switch breaking point are tested, and the sum of the obtained five quantities is the time slot interval of the second switching point. In the method, an auxiliary repeater is introduced to an uplink switching quantity test system, uplink switching control signals output by a sync board of a repeater to be tested substitute uplink switching control signals of the auxiliary repeater, an uplink control switch of the repeater to be tested is tested by dint of the auxiliary repeater, and uplink time quantity of the repeater to be tested is actually tested, therefore, the precision of each tested time quantity is greatly enhanced, the error is very small and the test efficiency is enhanced.

Description

technical field [0001] The present invention relates to repeater switching time measurement technology, in particular to a TD-SCDMA repeater second switching point time slot interval (i.e. the time slot interval between uplink and downlink time slots at the second switching point) verification testing method. Background technique [0002] The test method of repeater switch accuracy is tested in accordance with the provisions of 6.16 of the People's Republic of China Communication Industry Standard - 2GTD-SCDMA Digital Cellular Mobile Communication Network Repeater Technical Requirements and Test Methods. [0003] Among them, the indicators require: [0004] 1) The time advance of the uplink and downlink opening of the repeater and the lag of the closing time should be greater than 2 μs; [0005] 2) The transition point of the uplink and downlink switch falls within the TD-SCDMA frame, and the interval between the corresponding uplink and downlink transition points shall no...

AI Technical Summary

Problems solved by technology

The link in the middle is long and complicated, and the calibration of the instrument is difficult and inaccurate

[0015] 2. The requirements for the isolation of the circulator are very high, and the signal may be fed back to the instrument after being amplified by the repeater, causing the instrument to burn out

[0016] 3. Due to the difficult and inaccurate accuracy of the instrument, the accuracy of the data obtained from the test is low, which directly affects the debugging of the complete machine of the repeater, and at the same time affects the frequency spectrum index, peak code domain error and other indicators of the repeater, and ultimately affects to the stability and service life of the repeater

[0017] 4. The link signal is too long, which increases the complexity of problem analysis, and the thinking is prone to confusion, so it is impossible to accurately locate the problem

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