From the vigorous posture of athletes in the Beijing Winter Olympics to the roaring train on the Beijing Zhangjiakou high-speed railway, 5g technology is bringing you a more extreme experience when you sit at home and enjoy the HD live of the stadium. Compared with Pingchang Winter Olympics and Tokyo Summer Olympics, Beijing Winter Olympics has realized 5g large-scale commercial for the first time.
On the eve of the opening of the Beijing Winter Olympics, the reporter of E company interviewed Liu huaxue, deputy director of the China United Network Communications Limited(600050) Winter Olympics office, and exchanged views on the 5g network deployment and application behind the Winter Olympics.
Liu huaxue told reporters that as the official communication service partner of the Beijing Winter Olympics, China United Network Communications Limited(600050) has deployed thousands of 5g base stations to meet the needs of the Winter Olympics, forming a “one network” in the three competition areas of the two places. Through the application of a series of new technologies such as carrier aggregation and super uplink, the performance of Winter Olympic 5g network is further improved, which is enough to deal with the outbreak of large traffic in the Winter Olympic scenario.
The organizers of the previous winter Olympics and Summer Olympics have tried their best to show the scientific and technological content of the Olympic Games through the application of 5g technology. But in fact, the Beijing Winter Olympic Games is the first Olympic Games to achieve 5g full coverage. During this period, many mature 5g applications will appear, such as 5g cloud broadcasting, 5g smart medicine and so on. Liu huaxue said that in the post Winter Olympics era, these applications will continue their value.
5g “one network”
In June 2018, the world’s first 5g standard was frozen; In June 2019, China issued 5g licenses to four basic communication operation enterprises; In July 2020, the first evolved version of 5g standard R16 was frozen. Since 2018, over four years, the three Olympic Games have also witnessed the mature development of 5g technology.
“At the Pingchang Winter Olympic Games four years ago, many technical standards had not been frozen, and no country had realized 5g network deployment. More was 5g concept display; even at last year’s Tokyo Olympic Games, there was no coverage of all Olympic venues. Similarly, there was no commercial 5g application, just business demonstration.”
When talking about the application of 5g technology in the Olympic Games, Liu huaxue believes that the Beijing Winter Olympics is an important beginning – on the one hand, it has achieved full 5g network coverage of all Olympic venues, on the other hand, there will be many large-scale commercial businesses based on 5g, “which is the biggest difference from the previous winter Olympics and Summer Olympics.”
Liu huaxue said that China United Network Communications Limited(600050) has deployed thousands of 5g base stations to meet the needs of the Beijing Winter Olympics. Since the Winter Olympics involves three competition areas in two places, the concept of “one network” has been adopted from the beginning of the construction of the 5g network of the Winter Olympics. “Under the overall planning of China United Network Communications Limited(600050) group company, Beijing and Hebei companies build end-of-line networks respectively, and finally the China United Network Communications Limited(600050) communication technology command center located in Beijing will conduct unified dispatching and command. Therefore, ‘one network’ is to implement unified requirements in network planning and construction, standard formulation and operation guarantee.”
The reporter learned that in order to meet the needs of the venue, China United Network Communications Limited(600050) is equipped with 200m bandwidth for the Winter Olympic 5g network, and individual indoor venues are deployed according to 300m bandwidth. Liu huaxue told reporters that the application of a series of new technologies has further improved the already powerful 5g network. The peak 5g downlink rate of important venues can reach 1.5gbps and the peak uplink rate can reach 600mbps.
These new technologies include 5g carrier aggregation, massive MIMO, super uplink, etc. It is worth mentioning that 5g slicing technology allows operators to provide menu service capabilities according to users’ different needs for 5g network rate and delay. For example, 100m is “cut” out of the 200m 5g bandwidth along the Beijing Zhangjiakou high-speed railway for China Central Television, so as to realize the live broadcast and return of 5g + 4K signal of China Central Television. “The ‘slicing’ technology ensures that the business use perception of other users will not be affected after the exclusive enjoyment of resources of China Central Television.”
Although the Winter Olympics 5g network has sufficient bandwidth capacity and can achieve considerable uplink and downlink rates, the network pressure will be unprecedented in the face of extreme scenarios such as the opening and closing ceremonies. Liu huaxue said that the opening and closing ceremonies of the Beijing Winter Olympic Games are faced with the needs of 10000 users. The on-site audience will upload and share pictures and videos, resulting in instant network business concurrency; In addition, China Central Television and OBS, the Olympic service broadcaster, will also use 5g network to realize flexible reporting. There is a great demand for bandwidth resources and a great challenge to the network.
Therefore, network optimization is particularly important for the improvement of network quality. “We have done a lot of stress tests to simulate multi service concurrency scenarios, and then adjust the network deployment scheme according to the simulation test results.” Liu huaxue said that after careful and high-standard deployment, multiple rounds of pressure test and functional verification, the 5g network deployed in the “bird’s nest” of the National Stadium is enough to cope with the outbreak of large business volume.
signed a number of 5g commercial contracts
Compared with the previous winter Olympics and Summer Olympics, the Beijing Winter Olympics not only achieved a breakthrough in 5g network coverage, but also realized the large-scale commercial use of 5g, which not only meets the needs of ordinary audiences and staff, but also meets the needs of industrial applications.
Take the Beijing Zhangjiakou high-speed railway as an example, China United Network Communications Limited(600050) deploy a 5g base station every 500 meters along the high-speed railway, and the 5g full coverage of the whole line meets the real-time return of 5g + 4K live broadcasting in the high-speed environment. In fact, the switching of network signals between base stations in high-speed mobile scenarios will have a delay, and the 4K signal source also has high requirements for network capacity, so it is conceivable that it is difficult to achieve no Caton.
Whether the application of 5g in the Winter Olympics scene can continue its value in the post Winter Olympics era is an important topic. Liu huaxue is particularly interested in the application of 5g cloud broadcasting. In the past, TV media used broadcasting vehicles when broadcasting large-scale events, which was not only expensive, but also a large number of personnel to serve the collection, editing and broadcasting process; 5g cloud broadcasting adopts the lightweight concept. The front-end acquisition part uses only a small number of personnel and equipment, and uploads the video source to the cloud. Most personnel are placed in the editing, production and broadcasting links of the back-end.
“The Winter Olympics 5g cloud broadcasting application is based on the two carrying capacities of 5g and cloud, especially 5g. The front-end collectors can go anywhere in real time, and the scope of activities is not constrained like the fixed line in the past.” Liu huaxue said that both the Beijing Winter Olympics Organizing Committee and OBS will provide 5g cloud broadcasting services. The Beijing municipal government also pays special attention to the project. The application prospect after the Winter Olympics is very optimistic.
In addition, due to the certain dangers of snow projects, the Winter Olympics also provides a place for 5g + smart medicine. Once the athlete is injured on the snow track, before the ambulance arrives, the on-site ski doctor can connect with the hospital background in real time through 5g network to send back the athlete’s injury, and the background experts can remotely guide the on-site treatment through video. In addition, China United Network Communications Limited(600050) has also built a 5g + Intelligent Command and dispatching system for the Winter Olympics, which is not only practical, but also saves the investment expenditure for the Olympic Games.
In the communication with Liu huaxue, she particularly stressed that the Beijing Winter Olympics is the first Olympic Games to realize 5g scale commercial use, rather than the concept display or business demonstration at the Pingchang Winter Olympics and the Tokyo Summer Olympics.
“5g scale commercial must first have a seamless network, which is the basic network condition that commercial must have. Only with the network can business be superimposed on it.” Liu huaxue told reporters that 5g cloud broadcasting and 5g smart medical used during the Beijing Winter Olympics are commercial projects, China United Network Communications Limited(600050) has signed commercial contracts with Beijing Winter Olympics Organizing Committee and obs.
In addition to the above mature 5g applications, there is also a test space for other 5g applications inside and outside the Winter Olympic Stadium. For example, 5g + VR allows the spectators to better taste the details of the game, and makes the spectators who cannot go to the scene more immersive; Another example is Shougang park’s 5g + Beidou based vehicle road collaboration project. Liu huaxue said that the vehicle road collaboration project, as one of the topics of the scientific and technological Winter Olympics, has achieved a major breakthrough, and there will be greater application space in the follow-up in terms of unmanned meal delivery and unmanned service.
