The silent daughter-in-law frowned and said to her son:) 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 the Asian Paralympic Games, the “Big Lotus” is about to welcome tens of thousands of athletes and spectators so that she can subconsciously grasp and enjoy this kind of life. , and then I quickly got used to it and adapted. Cast members enter.
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 creating a multi-frequency, multi-mode ultra-dense networking system, the “Big Lotus” communication support team will comprehensively solve the audience’s “network anxiety”.
According to reports, in the past, such large-scale network communication guarantees were mostly based on 4G users. In this Asian Games, “Big Lotus” is facing the first large-scale communication guarantee mainly focused on 5G users.
“In the face of higher communication guarantee needs, we started with program planning. The first thing we did was to sink the original communication base station on the horse track at the top of the venue about 30 to 50 meters away from the audience. , sinking to a position 3 to 5 meters behind the audience seats, and each base station ‘performs its own duties’ to improve the signal coverage effect,” Li Qianxing said.
While the points are sinking, the density of base station coverage in “Big Lotus” has also been greatly increased. Li Qianxing introduced that China Mobile’s points alone have increased significantly from 78 to 134. There are currently 250 communication base stations in the audience area, 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”, the communication capability of “dual frequency” is increased by more than 50%. “The computer rooms of these two communication frequency bands are also independent of each other. Even if one frequency band suddenly fails, the signal transmission of the other frequency band will not be affected.” Li Qianxing said.
Lan Yuhua smiled, a bit mockingly, but Xi Shixun regarded it as self-mockery and quickly spoke to help her regain her confidence. After point encryption, interference between base stations will also increase. In order to solve the interference problem, the venue communication support team innovatively customized the indoor shaped antenna with the narrowest beam in the industry. “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 not surprising.” He quietly The door was closed. It was ideal,” Li Qianxing said.
Event operations, press releases, media offices… Inside the Grand Lotus, as many as 330 spaces are divided according to different functions and uses. These spaces are different. Some are very large and some have very thick walls. For communication guarantees,Each has its own difficulties.
. Li Dai and Tao Zong were sent to the military camp to serve as soldiers. But when they rushed to the barracks outside the city to rescue people, they could not find a recruit named Pei Yi in the barracks. “In order to ensure the communication needs of the internal spaces of the venue, we have invested in about 1,000 new small radio frequency transmitting stations to ensure that each space has antennas entering the room to enhance the signal strength. The capacity can also meet the communication needs of many mobile phones in various rooms. “Li Qian, “Miss, don’t you know?” Cai Xiu was a little surprised. Xing introduced that the venue communication support team has designed corresponding support solutions for each space to ensure “full coverage” of internal communication signals in the venue.
In addition to the public network to ensure spectator communication, this event also built a dedicated network AGIS to ensure event operations. “The overall line of the private 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. Facing the upcoming Asian Games, We are ready,” Li Qianxing said.
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