The Beijing 2022 Winter Olympic and Paralympic Winter Games (hereinafter referred to as the Beijing Winter Olympics) are full of excitement, fierce competitions are dazzling, and at the same time, the high-tech smart applications in the Winter Olympic venues are also particularly eye-catching.
As we all know, high-definition live broadcasting, intelligent driving, unmanned retail and other technological applications must rely on the ubiquitous high-speed mobile broadband network support. As the main force of the "national team" of mobile communication infrastructure construction and the "new infrastructure" of 5G, China Tower will implement the olympic concept of "green, sharing, openness and integrity", coordinate the construction needs of the three major operators and many units such as Shouxin and Zhengtong, deepen sharing, intensive and efficient construction of information infrastructure, and achieve "synchronous planning, synchronous design, synchronous implementation, and synchronous acceptance" with the main project.
It is worth mentioning that, as far as the opening ceremony of the recently concluded Beijing Winter Olympics, the comprehensive torch relay, the opening ceremony, the event, etc., the 1196 sites involved in the key guarantee of the China Tower have been running smoothly, achieving the guarantee goal of "zero major network failures, zero major network security incidents, and zero important customer complaints", and successfully completing the communication support task of the opening ceremony.
Help the Winter Olympic venues and important surrounding areas
Achieve full coverage of 5G networks
In the three Winter Olympic areas of Beijing, Yanqing and Zhangjiakou, the China Tower Association and telecommunications companies have overcome difficulties, built a total of 596 base station sites, realized 12 competition venues such as the National Gymnasium, the National Aquatics Center, the National Alpine SkiIng Center, the National Snowmobile Bobsleigh Center, and the National Ski Jumping Center, 26 non-competition venues such as the Winter Olympic Village, and the 4G and 5G networks of the three major operators of important transportation lines such as the Beijing-Zhang high-speed railway and the Jingli Expressway, and opened the communication tower to Zhengtong, Shouxin, Meteorology, etc. Public security and other social parties serve to help the wisdom of the Winter Olympics.
China Tower adheres to the principle of "can be shared without new construction, can be shared without independent construction", through the large-scale transformation of the built communication tower, the information equipment of relevant departments is also installed on the communication tower, etc., to achieve other services and communication tower sharing, and the overall sharing rate of the final infrastructure is more than 95%, which greatly reduces repeated investment. In the construction of the 5G base station of the Winter Olympics, the social pole tower has also successively assumed the new function of the communication tower. China Tower actively strives to install communication equipment on the lighting poles during the core competition area, realizing the comprehensive coverage of the 5G network on the audience seats of the venue, which not only reduces duplicate investment, shortens the construction period, but also meets the landscape requirements.
China Tower also gives full play to the advantages of the communication tower of "wide range of points, standing tall and looking far ahead", actively builds a digital tower, and actively plays an active role in ensuring the Winter Olympics for relevant departments in and around the Winter Olympic venues. Among them, the most representative communication tower station carries 8 units of equipment. In Beijing, the China Tower completed the signal coverage of the government affairs private network of more than 1.8 million square meters indoors and 23 outdoor macro base stations in nearly 10 venues such as the National Stadium, the National Stadium, the National Speed Skating Hall, the National Aquatics Center, and the Shougang Park, providing time-of-game command support for Zhengtong, Shouxin and other units; in important areas related to the Winter Olympics, traffic routes, and venue entrances and exits, using more than 10 tower high points to provide video information services for security and transportation; in alpine ski slopes and around the venues, More than 10 sites will be used for weather support services and radio monitoring services during the race. In Hebei Province, China Tower built 200 security support points on the entire line of the Beijing-Zhang high-speed railway, of which 92 monitoring high-speed rail stations were built to Chongli Prince Edward City to focus on ensuring the safety of high-speed rail in Chongli Racing Area; 6 forest and grass fire monitoring stations were set up around Chongli Competition Area, combined with 73 points of Chongli local fire prevention, to ensure the safety of forest farms in the competition area in real time and avoid fire; at the same time, 14 radio monitoring stations, 6 important bayonet security monitoring stations, and a number of special dispatching stations and meteorological monitoring stations were set up in the core competition area. Provide stable guarantee for the safety, meteorology, organization and scheduling of Chongli Division.
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5G full coverage of the "smart high-speed rail"
On January 6, the Winter Olympic Train and High-speed Rail 5G Ultra HD Studio was officially launched at the Qinghe Station of the Beijing-Zhang High-speed Railway, and the program transmission effect broadcast by CCTV International Channel and CCTV News Channel was stable, the picture was smooth and clear, and a new live broadcast platform for the Winter Olympics was created connecting various major competition areas, major venues and major media.
The Winter Olympics Train and High-speed Rail 5G Ultra HD Studio are deployed on the Fuxing with a speed of 350 kilometers per hour, integrating the three Major Chinese "business cards" of high-speed rail, 5G and Ultra HD video live broadcast technology, which is the first case in the world.
The Beijing-Zhang high-speed railway is an important part of the mainland's "eight vertical and eight horizontal" high-speed rail network, and also an important transportation support facility for the Beijing Winter Olympics, with a total length of 226 kilometers on the Beijing-Zhang high-speed railway (including the Chongli branch line), of which the tunnel part is about 73 kilometers, with a total of 10 stations. In addition to the high-speed rail 5G ultra-high-definition live broadcast, based on the seamless coverage of the 5G network support, whether on the train or in the station hall, passengers can enjoy convenient intelligent services and smooth mobile Internet experience.
If you can't build a base station in a tower in the tunnel, how to achieve signal coverage? China Tower in the tunnel innovative use of leakage cable to solve, especially in view of China Telecom, China Unicom 5G working frequency band high, signal attenuation problems, China Tower joint industry chain innovation and development of 5/4 inch low loss leakage cable, the use of segment coupling technology to focus on optimizing the 5G high band radiation performance, so that 5G signal is more uniform, lower loss, coverage distance is farther, to achieve full coverage of the 5G signal of the three major operators.
For the difficult scenarios of platform, tunnel mouth, sound barrier and other difficult scenarios, China Tower, together with China Telecom, China Mobile, China Unicom and railway departments, jointly researched the solution, according to local conditions, using macro and micro combination, indoor and outdoor collaboration to solve weak coverage, providing a solution for similar scene coverage nationwide.
In the vicinity of Tsinghua Park of the Beijing-Zhangjiang High-Speed Railway, in order to reduce the interference of noise on teachers and students in the school, a sound barrier with a total length of 830 meters has been set up. In view of the problem that the high-speed rail sound barrier has a large attenuation of the signal of the Hongji Station and cannot meet the coverage requirements, the Chinese tower construction personnel innovated the construction plan and used leakage cable coverage. Under the premise of meeting the load-bearing requirements of the sound barrier, they implanted chemical anchors on the frame columns, connected by angle steel, and attached leakage cables on the angle steel to transmit and cover the signal to the train window.
In the platform area of Qinghe Station of the Beijing-Zhang high-speed railway, the construction unit considered the aesthetics when building the station, requiring the antenna to be installed secretly, resulting in the signal being unable to penetrate the metal ceiling, and the plan was not implemented at that time. In the optimization and upgrading of the 5G network, the Chinese tower construction personnel adopted the BBU+rHub+pRRU+ small plate-like external antenna solution, pRRU was installed in the metal ceiling, and the small antenna was exposed under the ceiling, which not only solved the problem of signal blocking of the metal ceiling, but also maximized the overall aesthetics.
Zhangjiakou high-speed rail station has a construction area of 48,600 square meters, and the indoor distribution system of the three major operators has been opened at the end of December 2019. The station platform relies on the signal coverage of the nearby macro station, and does not do indoor distribution, but the coverage effect is poor due to the cover of the station roof. China's tower construction personnel used the high-speed rail station wall to add a new supporting wall pole, install operator RRU and antenna, and solve the problem of weak coverage of the high-speed rail station platform.
At prince edward high-speed rail station, the top of the station platform is a metal fully enclosed structure, and exposed equipment cannot be installed. The initial plan is covered by the surrounding macro stations, and the local area effect is not ideal, and it is necessary to implement station platform signal reinforcement. With the support of the railway department, the Chinese tower construction personnel share the 25-meter railway private network communication tower in the station, and add two pairs of poles facing the station direction at 15 meters and 13 meters of the railway special network tower tower to achieve high-quality coverage of 5G signals on the platform.
At the beginning of November 2021, CCTV put forward the requirements for high-definition live broadcast communication of the Winter Olympic EMUs, which must ensure the continuous and stable coverage of 5G networks along the route. In order to meet the 40Mbit/s upload rate requirements of CCTV Winter Olympics live broadcast, communication companies need to use 5G equipment upgrades, low-frequency re-cultivation and other technologies to achieve ultra-high uplink rates. How to organize the construction of the railway that has been opened for operation is a difficult problem facing the communications industry. The State Railway Group attaches great importance to it and organized a work conference on the 5G network optimization of the Beijing-Zhangjiang high-speed rail public network on November 10, 2021 to promote the solution of 5G upgrading and transformation. With the strong support of the State Railway Beijing Bureau Group Corporation, China Tower Beijing and Hebei Companies organized construction units to use the "skylight" construction time from 0:00 to 4:00 every day, and with the active cooperation and support of the Beijing Communication Section of the State Railway and other units, after 40 days of overcoming difficulties, the 5G network optimization and upgrading task along the Beijing-Zhang high-speed railway was completed on December 27.
End
Author: Meng Yue
Editor-in-Charge/Layout: Fan Fan
Review: Shen Qing
Producer: Liu Qicheng
I knew you were "watching"
![In 2021, come to the "disk" | where there are people, there are communication towers[fig]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)