This article is from the public number:Arterial Network (ID: vcbeat), author : Zhao Weiwei, the original title is: “The world’s first based on elastic slicing 5G private network landing Zhengdayi Affiliated Hospital, these medical scenes are coming out”, title Figure from: Oriental IC.

The “5G” wave swept the hospital for more than a year. Looking back on this year, we can see that the world’s first 5G-supported orthopedic telesurgery was successfully completed in Beijing Jishuitan Hospital; the first 5G-based remote Parkinson in ChinaThe disease “brain pacemaker” implant surgery was successfully carried out in the General Hospital of the Chinese People’s Liberation Army… All kinds of achievements have undoubtedly laid a good start for the large-scale application of “5G+medicine”.

However, these pilot projects have demonstrated the availability of 5G technology in healthcare. However, from the laboratory to the actual application scenario, we also need a complete 5G infrastructure project to support the “real world” of “5G+ medical”.

The good news is that we have seen a breakthrough. On October 18th, Zhengzhou University First Affiliated Hospital Internet Medical System and Application National Engineering Laboratory (hereinafter referred to as the National Engineering Laboratory), in conjunction with China Mobile Communications Group Henan Co., Ltd., China Mobile Chengdu Industrial Research Institute, and Huawei Technologies Co., Ltd. jointly created the “Full-Scenario 5G SA Smart Medical Network Based on Elastic Slices”, which is the world’s first full-scenario span based on elastic slices. Cover 5G private network.

The 5G SA smart medical private network released this time follows the 3GPP standard of the International Telecommunications Association. Based on the 5G SA core network, the end-to-end flexible slicing technology is adopted, which is proposed for the “in-hospital-in-hospital-out-of-hospital” medical scene. The 5G medical private network solution with network adaptive, network-aware, and intelligent network operation and maintenance realizes the security isolation between the medical private network and the public user network, which can well meet the performance and security appeal of the 5G medical private network for users in the medical industry. .

The 5G SA medical network no longer relies on 4G and is a complete and independent 5G network. Compared with the current 4G, the 5G SA network model is a subversive change. It uses the MEC+ network slicing technology application to truly realize the dynamic perception of network bandwidth, the isolation of different services, and the dynamic deployment of network performance. Customization requirements for 5G private networks in different vertical industries.

After on-site comparison test of 5G SA medical special network of Zhengda First Affiliated Hospital, the results show that under the interconnection conditions of in-hospital and inter-regional, the download rate of 1G slice reaches 900Mb/s and the uplink rate reaches 180Mb/s or more. The average user delay is 8ms. In the case of high network load, the 5G common service rate drops by more than 60%, and the maximum delay increases by more than 6 times. The service quality indicators of the 5G medical private network are normal, and the uplink bandwidth guarantee rate reaches 95%. The bandwidth guarantee rate is over 90% and the delay guarantee rate is 99%.

In addition, the 5G Wisdom Medical Network is highly deployable and reproducible. After this experiment, the future hospital 5G private network deployment will be greatly accelerated.

In order to gain a deeper understanding of the subversive changes that SA and elastic slicing technology brought to the hospital, the reporter came to the National Engineering Laboratory of Internet Medical Systems and Applications of Zhengda First Affiliated Hospital, and communicated with the hospital technical team, Huawei and mobile. . The core content can be sorted out as follows.

  • How does SA private network lay the foundation for hospital 5G development?

  • What breakthroughs did elastic slicing technology bring?

  • What new applications will be born with SA and elastic slicing technology?

SA private network sets the tone for 5G full service

5G technology has three scenarios: eMBB (enhanced mobile bandwidth, greatly increasing upload and download speed), uRLLC(Ultra-reliable, low-latency communications, such as driverless services), mMTC(Massive Machines Communication, multi-connection, can be used for city associations).

5G network deployment has two strategies: independent networking (SA) and non-independent networking (NSA). The 5G base station of the NSA network needs to rely on 4G and use the 4G base station as an anchor point to carry out 5G services. The 5G base station of the SA network does not depend on the 4G base station, and can independently carry out services. The specific comparison is as follows:

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NSA and SA networking mode function analysis

As can be seen from the above figure, the NSA network only focuses on the eMBB large-bandwidth connection, which can meet the public users’ online demands. However, the application of new technologies such as low latency, large connections, and network slicing requires the use of the SA networking architecture. In the medical scene, the remote surgery under low delay and the mobile medical care under the connection of massive equipment have extremely high demand for mMTC and uRLLC.

The Zhengda First Affiliated Hospital is officially based on the SA networking model, using elastic slicing technology to deploy an end-to-end medical private network. The smart medical private network users are completely isolated from the 4G public user services and the 5G general public user services, so that the private network users will not be affected by the public user services and ensure the high security of the medical private network.

The network isolation capability comes from the architectural characteristics of the medical private network itself. The medical private network deployed by the Zhengda First Affiliated Hospital consists of three channels, namely exclusive pipes, exclusive pipes and ordinary pipes. Among them, exclusive pipes and exclusive pipes can promise SLA to guarantee the quality of medical services.

SLA indicates the service level that the operator can provide to users, including bandwidth, delay, jitter, packet loss, security, reliability, and so on. In the 5G era, the vertical industry puts high demands on the network, especially the bearer network, including large bandwidth, low latency, and high reliability. How to provide a promiseable SLA is the key to promoting the success of 5G commercialization in the vertical industry. The 5G Wisdom Medical Network is committed to SLA visualization through SLA based on elastic slicing, SLA controllable based on intelligent routing, and SLA based on NCE+iFIT.

Generally speaking, the exclusive pipeline is like a private car owned by the hospital. It is a VIP channel enjoyed by the hospital alone. This channel provides a full-time dedicated network service for the hospital, completely isolated from the public user network, and carries all the services and applications within the hospital.

In practice, exclusive channels are generally used in in-hospital and inter-institutional scenarios to isolate medical services from public Internet services; inter-office services are isolated from the public network. The pipeline ensures that medical data is not discharged; download a CT or nuclear magnetic image within 3 seconds(800MB); provide <50ms audio and video service interaction delay, <20ms remote ultrasound and other control business delays.

In contrast, the enjoyable pipeline is aimed at some sudden events, such as mobile first aid and critical transfer, similar to the role of a taxi. In the overall system, the exclusive pipeline provides a temporary special pipeline for mobile ambulance, giving priority to the first-aid position at the front end, and obtaining more treatment time for patients.

Smart Business Network four business scenarios

To achieve the safe flow of all kinds of data, the security of the medical private network itself is also very critical. On the one hand, because the 5G security standard is naturally higher than 4G, such as 256-bit encryption algorithm, user-level security policy, unified authentication and other standards require better fire protection capability of 5G; on the other hand, due to multiple pipelines in parallel, data points Packet transmission, even if the private network is attacked, the hacker can only obtain the scattered and uncombinable data, and the user’s information security will be greatly guaranteed.

Elastic Slices Change Hospital Data Transfer Process

Another feature of the 5G medical network of Zhengda First Affiliated Hospital is equipped with the FlexE slicing technology created by Huawei. The slice has the finest 1G granularity in the industry, and the number is three times that of the industry. Its flexible design ensures that the hospital adjusts the network according to bandwidth requirements, and implements refined network management with deployment.

Huawei researchers said: “In the past, the main body of the hospital and the body could not accurately calculate the bandwidth before purchasing the bandwidth. Only after using it, the bandwidth is not enough.

Under elastic slicing, companies can calculate the bandwidth requirements of enterprises in advance. When used, the bandwidth can be dynamically allocated by setting. For example, if the number of patients in the outpatient clinic is 8-10 in the morning, then we will have a large amount.The bandwidth of the vacant department can be extracted during this time period and assigned to the outpatient department. Under such an architecture, limited bandwidth will be accurately allocated to maximize resource utilization efficiency, and the hospital only needs to establish a peak bandwidth to deploy a 5G network at a reasonable price.

In addition, under the FlexE slice, the uplink and downlink packet sending process has changed from a packet-by-packet transmission mechanism to a strict TDM scheduling mechanism.

As shown in the figure below, each time FlexE sends a packet to confirm the composition of each packet of data, in practice, its composition should be determined by the bandwidth requirements of different services of the hospital. In this mode, each packet of data will be sent normally even if it is not full. This order ensures that different medical services can be sent in parallel, avoiding high latency in emergency services.

When the network is congested, the separate outsourcing pipeline that FlexE splits can isolate the unique medical business from the hard pipeline of other medical services, giving priority to ensuring that the unique medical business is low-latency and efficient. In addition, even if other services on the network are congested or attacked, the isolated distribution pipeline can ensure that the business within the medical slice will not be affected.

In this way, emergency business data can avoid waiting in line

Take a remote consultation as an example. The 5G medical private network plus elastic slicing can collect and monitor the network delay between the hospital and the branch in real time, select a low-latency path in the network, and change in the network environment. Poor, when the delay becomes longer, make timely adjustments, and always ensure that the delay of the business is not affected.

Overall, we can summarize the advantages of a flexible slice-based private network as the following 6 points:

1, 5G medical special network replaces the in-hospital WiFi network to achieve high-quality wireless access needs of hospitals;

2. Using 5G slice and edge computing technology to achieve the integration of personal Internet access and hospital-owned data center Internet access;

3, citedThe advanced technology of entering the public cloud can solve the problem of high cost and low operation and maintenance level of hospital self-built IDC;

4, the data is not discharged from the hospital, to ensure the security of the cloud on the hospital data;

5, high-speed and large bandwidth, to meet the needs of hospitals to integrate AI capabilities, accelerate changes, improve the level of hospital diagnosis and treatment;

6. End-to-end network slicing to ensure the reliability of medical business data and support in-hospital, inter-hospital and out-of-hospital medical services;

From the life and death relay to the Internet of Everything, what area can 5G be used first?

To talk about demand, we must first understand the development status of 5G technology.

Since the 5G standard R15 was frozen at the end of 2018, companies have already made great strides in 5G applications. However, the R15 standard focuses on eMBB, which is to focus on the construction of large bandwidth. This will lead to a significant increase in download speed and data transfer security.

Massive machine communication and ultra-low latency will be the goal of the future R16. In the far future, 5G will promote future hospital operation and changes in the entire evolution model. For example, 5G may break the geographical restrictions of medical treatment; and gradually transform the current medical structure into the regional medical center model of the Health Management Center.

So, which technologies can be applied first under such features? National Engineering Laboratory staff talked about the following directions. (So, which applications can be implemented and landed under such features?)

remote first aid

Remote first aid in off-campus scenarios is one of the applications that are the lightest and fastest to implement under existing conditions. Although the existing ambulances have been equipped with a large number of inspection equipment, due to the limitation of bandwidth, many data can only be processed on the ambulances with relatively simple facilities, and cannot be transmitted to the hospital for real-time diagnosis in time. 5G can solve this problem. .

According to the deployment of the SA private network of Zhengda First Affiliated Hospital, the backhaul bandwidth of the ambulance will reach 50M, which can meet the remote consultation under 4K video. In this case, the patient onceOn the train, his electronic medical record information and real-time detection information will be transmitted to the hospital at the first time, and the doctor can also clearly observe the patient’s physical condition through high-definition video, thus providing a more accurate checklist. In addition, the 5G network under the smart city will plan the fastest driving route for ambulances in order to seek more rescue time for patients.

Internet Hospital and Teleconsultation

5G mainly includes two points for Internet hospitals. On the one hand, it provides patients with more extensive remote consultation services; on the other hand, it provides a high-bandwidth, low-latency, and secure medical line for Internet hospital service providers.

In the case of wireless networks, Internet hospitals are more likely to provide patients with light consultation services, and with the popularity of 5G, doctors can talk to patients with 4K or higher resolution, such as skin diseases, eye diseases, etc. For the disease, the patient can complete the diagnosis to a certain extent by simply following the doctor’s request.

Therefore, the significance of 5G for Internet hospitals is to expand the scope of services by enhancing the ultra-high bandwidth characteristics of mobile to optimize the flow of Internet medical services.

Remote consultation also takes advantage of the large bandwidth features to help doctors better understand patient status and get more patient information. The grassroots will therefore enjoy expert medical services.

Hospital management under 5G

Under the current technology model, the advantage of 5G hospital management is to achieve unmanned surveillance and robot guidance. For the hospital of the magnitude of the Zhengda First Affiliated Hospital, real-time data monitoring should be carried out for 10,000-patient inpatients. The network architecture in 4G mode will generate huge tariffs, and its rigid bandwidth will cause a large degree of network. Waste of resources.

In contrast, the SA private network supported by elastic slicing can connect more devices and provide more stable network transmission services. At the same time, the hospital’s cost investment in network construction will be more reasonable. In addition, as long as 5G is deployed, hospitals and health clinics in the region can quickly access the smart medical private network, and the slice bandwidth of the private network can be flexibly configured to meet the requirements of high, medium and low configurations of different types of hospitals. .

In the future, hospitals supported by 5G may be able to apply more local cloudization to reduce the hospital’s demand for hardware costs, which will also significantly reduce hospital operating costs.

In summary, the 5G medical network onlyIt is an infrastructure, but through the combination of artificial intelligence, cloud computing and other technologies, 5G can make the latter play more effective value in the new scene. With the basic development of 5G technology, when the low latency and the Internet of Everything become reality, it will change the future medical ecology and medical treatment mode.

write at the end

Deep learning originated 40 years ago, but until the GPU, FPGA, ASIC and other chips became computing hubs, the whole technology went from theory to reality. Today’s 5G is playing the role of a “chip”, laying the foundation for the development of related applications.

So, in the medical field, even if there is no killer application, 5G still has great potential to change the medical model. As Jiang Wei, a researcher at the Zhejiang Digital Research Institute, said: “The infrastructure determines the landing speed of the upper-level application. “5G as an infrastructure must be prior to application and guide the application. After completing the infrastructure construction, it has also achieved the first place in application development.

As we now look at the 4G that was promoted 10 years ago, few people can see the dramatic changes that technology can bring in the future. In addition to 5G medical applications such as hospital private network construction, Internet hospitals and teleconsultation, remote first aid, 5G and VR/AR, high-definition medical imaging, tactile feedback, wearable devices, artificial intelligence, or can truly break the doctor’s medical care The geographical restrictions and time constraints faced by the service are particularly promising in the future.

This article is from the public number: arterial network (ID: vcbeat) , author: Zhao dimensional