Apparatus and method for measuring wireless base station channel delay

Abstract

The invention discloses a measuring wireless base station channel delay device and method, which is characterized by the following: the base station baseband modulator installs test signal sending modular; the test signal sending modular sends test signal which set cycle to antenna port of base station; the test signal sent by base satation comes back to base station; the transmitting-receiving channel ring retard of base statioin is get according to base station frame timing signal by cycle signal zero-cross point. The invention simplifies the operation, which needs smaller test sets.

Description

technical field [0001] The invention relates to the communication field, in particular to a device and method for measuring channel delay of a wireless base station. Background technique [0002] Wireless base station channel delay includes two parts: transmit channel delay and receive channel delay. The transmit channel delay refers to the delay of the signal from the output of the baseband modulator to the antenna port, and the receive channel delay refers to the delay of the signal from the antenna port to the input of the baseband demodulator. . The sum of the transmit channel delay and the receive channel delay is called the round-trip delay of the transceiver channel of the wireless base station. The schematic diagram of the definition of wireless base station channel delay is as follows: figure 1 shown. [0003] With the emergence of new services and technologies such as mobile phone positioning services, transmit diversity, and smart antennas, the accuracy require...

AI Technical Summary

Problems solved by technology

[0011] 1. The measurement result of using the base station RTT to measure the loopback delay of the transceiver channel includes the delay of the mobile terminal, and this part of the delay is difficult to measure and calibrate separately;

[0012] 2. The measurement results of using base station RTT to measure the loopback delay of the transceiver channel are still limited by the multipath resolution of the base station baseband demodulator, and the measurement accuracy is difficult to improve;

[0013] 3. In order to establish the wireless link, many devices such as mobile terminals and base station controllers are required, and the test environment is complex and inconvenient to operate

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