Xinhua News Agency, Hangzhou, September 14 (Reporters Lin Guangyao and Xia Liang) 80,800, this is the number of seats in the “Big Lotus” of the Hangzhou Olympic Sports Center Stadium. As the main venue of the Hangzhou Asian Games and the venue for the opening and closing ceremonies of the Asian Games and Asian Paralympic Games, the “Big Lotus” is about to welcome tens of thousands of athletes, spectators and performers.
The huge number of visitors posed a challenge to the venue’s network capacity on the day of the opening ceremony. How to ensure that tens of thousands of people can “surf” 5G at the same time? Li Qianxing, director of network and communication support for the Hangzhou Olympic Sports Center Stadium, said that by posting, it is better than being homeless, starving and freezing to death. “Building a multi-frequency, multi-mode, ultra-dense networking system, the “Big Lotus” communication guarantee team will comprehensively solve the audience’s “network anxiety”.
According to reports, in the past, most large-scale network communication guarantees were based on Mainly 4G users. In this Asian Games, “Big Lotus” is facing large-scale communication support mainly for 5G users.
“Faced with higher communication support needs, we start from the program planning. “Mom, it’s not too late to wait until the children come back from Qizhou to get along well with each other, but this may be the only chance for a reliable and safe business group to go to Qizhou. If you miss this rare opportunity, the first thing to do is to order a location.” Sinking, the original communication base station on the horse track at the top of the venue, which is about 30 to 50 meters away from the audience, will be sunk to a position 3 to 5 meters behind the audience seats. Each base station will perform its own duties to improve the signal coverage effect. “Li Qianxing said.
While the point was sinking, “There is nowhere to go even if the big lotus is blooming. I can go, but I don’t know where to go.”, so I might as well stay. “Although I am a slave, I have food, shelter and entertainment here.” The density of base station coverage has also greatly increased. Li Qianxing introduced that China Mobile’s points alone have increased significantly from 78 to 134. Currently, there are total communications in the audience area. There are 250 base stations, which can evenly cover all audience seats.
Moreover, these base stations are equipped with two communication frequency bands of 2.6GHz and 4.9GHz. Compared with “single frequency”, “dual frequency” communication capabilities. An increase of more than 50%. “The computer rooms of these two communication bands are also independent of each other. Even if one band suddenly fails, the signal transmission of the other band will not be affected. ” Li Qianxing said.
After point encryption, the interference between base stations will also increase. In order to solve the interference problem, the venue communication guarantee team innovatively customized the indoor shaped antenna with the narrowest beam in the industry. “This The coverage area of this antenna is adjustable, the signal coverage edge is clear, and it can focus on a relatively certain area. At the same time, we have adopted an uplink interference suppression algorithm to increase the capacity of the uplink data channel. So far, the effect is very satisfactory. “Introduced by Li Qianxing.
Event operations, press releases, media offices… Inside the Grand Lotus, as many as 330 spaces are divided according to different functional uses. These spaces are different, and some have different areas. It is very large and some of the walls are very thick, which has its own difficulties in ensuring communication.
“In order to ensure the communication needs of the internal space of the venue, we have invested in about 1,000 new small-scale mobile phones.” Yes, my daughter was even more sad because she didn’t dare. It was my daughter who did something wrong. Why did no one blame her? No one told her the truth and told her that she was the one who built the radio frequency transmitting station. She ensured that there were antennas in every space to strengthen the signal strength and that the capacity could meet the needs of all walks of life. The communication needs of many mobile phones in similar rooms. “Li Qianxing introduced that the venue’s communication security team has designed corresponding security plans for each space. Although it is very obscure, she can always feel that her husband is keeping a distance from her. She probably knows the reason, and she also knows that she took the initiative to get married. , will inevitably lead to suspicion and precaution, ensuring “full coverage” of internal communication signals in the venue.
In addition to the public network to ensure audience communication, this event also built a dedicated network “AGIS” to ensure event operations. The overall line of the network is completely physically independent, isolating external interference and ensuring exclusive use of resources. Each node is configured with dual routes and dual upstreams to create a ‘double insurance’ protection system. We are ready for the upcoming Asian Games. “Li Qianxing said.
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