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 host of the Hangzhou Asian Games, Lan Yuhua looked at her mother who was worried and tired because of herself, shook her head slightly, changed the subject and asked: “Mom, where is dad? My daughter hasn’t seen her dad for a long time, and I miss him very much. Pavilion, It is also the venue for the opening and closing ceremonies of the Asian Games and the Asian Paralympic Games. “Big Lotus” is about to welcome tens of thousands of athletes, spectators and performers.
A huge number of visitors will visit the venue on the day of the opening ceremony. The network capacity poses a challenge. 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 building a multi-frequency, multi-mode ultra-dense networking system, “Big Lotus” The communication guarantee team will comprehensively solve the “network anxiety” of the audience.
According to reports, in the past, such large-scale network communication guarantees were mostly for 4G users. This year’s Asian Games will face “Big Lotus”. It is the first large-scale communication guarantee that mainly focuses on 5G users.
“Faced with higher communication guarantee needs, we started with solution planning. The first thing we did was to move the original location to the top of the venue. The communication base station on the horse path is about 30 to 50 meters away from the audience, and is sunk to a position 3 to 5 meters behind the audience seats. 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 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”, ” “Dual-band” communication capabilities are 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.
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 “Don’t worry, it’s absolutely tight-lipped.” 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. At present, The effect is ideal. “Introduced by Li Qianxing.
“Event operations, press releases, media offices… Inside the Grand Lotus, this decision has been made separately according to different functions and uses.” As many as 330 spaces have been separated. These spaces are different, some are very large, some have thick walls, and each has its own difficulties in ensuring communication.
“In order to ensure the communication needs of the internal space of the venue, we have newly invested about 1,000 small radio frequencyThe transmitting station ensures that every space has an antenna entering the room to enhance the signal strength, and the capacity can also meet the communication needs of many mobile phones in various rooms. “Li Qianxing 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 audience communication, this event also built AGIS is a dedicated network to ensure the operation of the event. “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’ guarantee system. . We are ready for the upcoming Asian Games. “Li Qianxing said.
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