Optical communication test solutions 5G Test Solutions Radio Monitoring Solutions Traffic network test solutions Power Maintenance Solutions
Location: Solutions 5G Test Solutions MMDS jamming 5G network - Zhuzhou MMDS jamming 5G network

MMDS jamming 5G network - Zhuzhou MMDS jamming 5G network

Test Background

Multiple 5G base stations of an operator in the urban area of Zhuzhou were interfered by 2515MHz-2558MHz. The PRB waveform was obtained and it was found that there were multiple broadband signals, and there was interference at all times.

1.png


Test process one: 

From the frequency domain, the bandwidth is about 8MHz, and the coverage is about 60km.  

2.png


Test process two: 

Select the antenna where the most interfered 5G base station is located for testing. When pointing to the south side of the base station, the interference signal is found. The peak value is about -100dBm, and the signal characteristics are consistent with the PRB waveform monitored in the background.

3.png


Test process three: 

Before entering the mountain, select the location where the signal tower on the top of Junshan Mountain can be seen visually. When the directional antenna points to the signal tower, it can receive the same MMDS characteristic signal as the previous test, and the signal disappears when pointing in other directions.  

Arriving at Junshan Temple platform on the top of Junshan Mountain, when the directional antenna points to the signal tower, the peak value can reach about -78dBm, and there is no signal in other directions. It consists of 6 8MHz broadband signals, occupying the 2510MHz-2558MHz frequency band, confirming the MMDS signal tower. source of interference.  

4.png


Summary:

Multi-channel microwave distribution system (MMDS) is a microwave system that transmits TV, sound broadcasting and data signals to the front end of each cable TV public antenna TV system or directly distributes it to individual users by means of one-point transmission and multi-point reception using microwave frequencies. According to my country's MMDS transmission and transmission TV channel configuration, MMDS operating in the 2500-2700MHz frequency range will cause serious interference to 5G systems deployed in the 2.6GHz frequency band. The interference is characterized by multiple regular continuous 8MHz bandwidth rectangular interference waveforms.


More 5G test cases are as follows. If you need to know about relevant cases, please contact our sales, thank you.

MMDS interferes with 5G network

 -Zhuzhou MMDS interferes with 5G network

Other Cases

5G NR monitoring analyzer is mainly to cope with the current latest 5G NR communication system to provide a complete test of the million cases. It provides efficient test methods and means for spectrum analysis, interference exclusion, base station testing, road coverage and other testing needs, and is a necessary tool for projects such as base station opening verification and network quality improvement projects.

5G NR field test application scheme

Detail

An operator in the vicinity of three base stations in the Division Court district there is round-the-clock interference, resulting in complaints from neighboring 5G users perception problems, through the background network management to detect PRB noise value, found 2515-2535MHz lift, due to the three base stations are the strongest interference in the sector of the cell, the preliminary analysis for the existence of interference equipment in the small area.

Wireless WIFI signal class interference 5G network - Zhengzhou wireless network bridge interference 5G network

Detail

The south sector of a 5G base station of an operator in Xuchang is subject to long-term interference, leading to a great impact on cell access, switching and other indicators, which seriously affects the perception of 5G user access, with interference levels around -103dBm.

Jammer interferes with 5G network-Xuchang jammer interferes with 5G network

Detail