There is no signal on the WLAN wireless network card in the residential area, and the signal processing method can not be found with the test software.

Failure phenomenon:

There is no CMCC signal on the wireless network card, and it can not be scanned with test software.

Cause analysis:

The main reason is that the AP is dropped or the antenna is flooded or damaged.

Solution:

1. After receiving the complaint from the customer in Building 5 of XX Community, test with notebook at the site, the signal strength is about-90, to the balcony to observe the distance of the antenna from the opposite building, it is found that the antenna is about 20m away from the test site, so the analysis shows that it should be the AP drop, or the poor connection between the antenna and the feeder.

two。 The roof of 3 good buildings opposite above found that all the feeders on the roof had been removed and the AP did not have any connection with the high-gain antenna at all. So he went down and got the short feeder and reconnected it. The signal strength of the field test is about-45, very good. Call and ask the customer to turn on the computer and try again. The customer still can't find the signal. This analysis is the problem of the customer's computer itself.

3. Then I went to the customer's home and tested everything to be fine with our notebook. Use the customer's computer to find that the Wireless Zero configuar wireless configuration service is not turned on, resulting in unable to search for signals.

4. Enter the list of system services and find that this service is turned on, and the computer begins to prompt "windows itself is required to configure the wireless network". From this, we know that it is caused by the conflict between the customer's wireless network card driver and windows's own wireless network configuration, and it is necessary to reinstall the wireless network card driver.

5. After selecting only "install drivers only" during the installation process, return to normal.

Summary of experience:

1. AP fault replacement fault AP can be solved.

2. Reinstall the network card driver to solve the problem that the signal cannot be searched.

3. After eliminating the problem, carefully analyze the most direct cause of the problem. For example, the feeder is flooded or can not be relieved well.