Power -owned network communication accelerate transformation, this technology will welcome the opportunity ...

After the arrival of 5G, it has brought great changes to the development of the global communication industry.

This change is not only reflected in the evolution and upgrade of communication technology, but also in the change of communication application scenarios. People no longer pay attention to the consumer Internet represented by mobile phones, but pay more attention on the booming industry Internet.

Hundreds of industries represented by industrial manufacturing, energy power, transportation, logistics, and medical education have begun to introduce advanced communication technologies, conduct digital intelligence transformation, and move towards digital transformation.

Traditional special network communication technology can no longer meet the needs of the times. Enterprises need to fully upgrade the internal communication network to meet the needs of high -speed business development.

In fact, in addition to 5G, there are many communication and IT technologies being accepted by the enterprise and integrated into this century-old change, including the park's Light Network (PON), Wi-Fi 6/7, Cat.1 , NB-IoT, EMTC, etc.

These technologies basically belong to the underlying connection technology.

Today, Xiao Zaojun wants to introduce it to you is a upper -level communication technology, which is a technology around business and services. That's right, this technology is the famous IMS.

█ What is IMS

IMS, full English name is IP Multimedia Subsystem, IP multimedia subsystem. Many readers know it from Volte business, which was very hot before. Also, last year and this year's highly high 5G messages (RCS) and 5G new calls (VONR) were also closely related to IMS.

IMS first proposed in the late 1990s. At that time, it was considered an internationally recognized next -generation core network communication technology. The 3GPP R5 version frozen in June 2022 completed the early definition of IMS and pushed it to the commercial stage.

Under the wave of comprehensive IPization of various major operators in the world, IMS is an indispensable system. It is a unified standard for the integration of fixed communication networks and mobile communication networks. It is the cornerstone of communication networks from TDM to IP.

Is IMS really so strong? What can it bring?

In fact, the name of the IMS (IP Multimedia Subsystem) itself has revealed some of the answers to us.

First of all, IP, representing IMS based on IP carriers, completely adopts IP technology.

The core protocol of the IMS is SIP (Session Initiation Protocol). This is an IETF -based application layer control protocol based on Internet. It is independent of the underlying protocol, which is very open and flexible, with strong scalability, and is especially suitable for multimedia communication.

Secondly, Multimedia (multimedia) means that IMS can achieve multimedia business.

The traditional multimedia business is voice, images, audio, video, etc. The IMS standard has a more detailed division of multimedia business, including IP telephone business, multimedia conference business, collaborative office business, communication assistant business, etc.

Finally, Subsystem (subsystem) indicates that IMS is an important component of the entire communication system. It can cooperate with other network systems to achieve business functions. For example, if IMS and LTE cooperate, Volte can be achieved. IMS and 5G can realize VONR business. IMS and instant messaging can achieve RCS. Native

In simple terms, IMS is a "multimedia server" deployed on the IP network. Through its control coordination, users on IP networks can conduct multimedia businesses such as video calls.

The core goal of IMS is to build an integration platform that has nothing to do with and supports a wide range of multimedia businesses, empower IP networks, and serve customers.

IMS was born in 3G and matured at 4G. Its technical standards have gradually improved, which has been widely recognized by major mainstream operators, and is popularized globally.

█IMS and Digital Electric Specialty Network

Power Communication Specialty Network is the most representative type of special network communication in domestic enterprises.

In recent years, driven by the State Grid Corporation (hereinafter referred to as the "State Grid"), the digital transformation of the electric power network is also underway.

The power network is the basic platform for realizing the digital transformation of power, and it is an important support for ensuring the smoothness of the grid scheduling instructions. In the State Grid has realized the full -coverage of the full -coverage of the full -scale network resources and informatization of the State Grid's network resources and informatization at 35kV and above factories and stations in the entire optical fiber resources.

However, there are many information systems within the State Grid, and it is difficult to coordinate efficiently. It has become a key research topic for digital transformation in China. The integration of information and communication technology has continuously accelerated the degree of digitalization of the grid, the network scale expands sharply, and the "nerve endings" of the power grid rapidly expand in the form of explosion. In the information and communication network system that supports the security of the grid, tens of millions of terminals and equipment have been accommodated.

Tradition -based program -controlled switching technology, facing problems such as stopping production and suspension, high energy consumption, and weak emergency repair capabilities. There are problems such as poor standards, difficulty in business expansion, and weak interaction capabilities. They cannot meet the needs of digital development of power grids.

The networking structure of the State Grid adopts the two -level exchange system of State Grid and Provincial Companies. Over time, the network structure is more complicated and the border is more blurred. The number of network security, various terminals and system maintenance increases, weak collaborative capabilities, low emergency protection efficiency, poor multimedia communication capacity, and insufficient openness. Essence All these have greatly restricted the realization of the National Grid "Digital Wisdom Grid" construction goals.

With the development of a new generation of communication technology of 5G, the State Grid urgently needs to build a new type of information communication integration network based on the zero -trust network security and leading advanced communication technology standards to support the digital transformation of enterprises. A series of problems such as trusted access control, multi -system and application collaboration, cross -network security interoperability and other series of access terminals involved in the last mile access terminal need to be solved as soon as possible.

Therefore, it is the general trend to introduce IMS into the construction of power communication special networks.

█ The significance of introducing IMS of Electric Power Network

The State Grid began to introduce IMS technology before 2018. At present, the Power Administrative Exchange Network of the State Grid has gradually evolved to the IMS exchange technology system.

What is the significance of the national power grid to continue to embrace IMS technology?

1. IMS is the "standard" status of a new generation of communication exchange technology established internationally.

IMS is an internationally recognized network standard for solid shifts, and it is also a 3GPP standard for root. Not only will 3G/4G/5G continue to use, but 6G will be indispensable in the future. In the process of 6G standard formulation, the IMS technology standard is also required to be optimized simultaneously.

Therefore, the introduction of IMS technology in the national power grid not only promotes the research on the transformation of energy and power companies, but also explores key technical problems that break through the implementation of applications. It is of great significance to formulate the national power grid information and communication integration standardization.

Strengthening the research and exploration of IMS in the field of domestic power products has played a pivotal role in enhancing China ’s international standards for the IMS international standard.

2. Standardly leading research value for the construction of zero -trust information communication network.

Cyber ​​security relations national security. To build a zero -trust network, a collaborative power grid, and the various resources in the information and communication network to achieve digital transformation, there must be a "unified standard" lead.

The national power grid introduced IMS, and based on actual applications, it solved key technical obstacles to restrict landing. It has a standard significance and important research value for the construction of the power grid zero -trust information communication network.

3. Explore the leading solution for the 5G application of the power grid and digital transformation.

IMS, as a 5G core exchange carrying platform, also involves series of problems such as network security, last kilometer access, multi -system collaboration, and application interoperability in the power grid 5G application.

Therefore, in the zero -trust network strategic planning and construction with the "security" as the red line, the key technologies that restrict the application of applications on the development of the application of the application of the application of the application of the application of the Difficulty of the Power Grid are not only the standard specifications of the standard specifications of the power grid administrative office communication network and the scheduling communication network. Power grid 5G application landing and digital transformation explore a leading solution.

█ The main difficulty facing IMS technology in the power grid

In the process of introducing IMS technology in the grid, some difficulties have also been encountered, and the specific performance is:

1. Cognitive differences in the positioning of IMS technology

In the early days of IMS, many people's perception of IMS technology positioning was biased.

These people believe that IMS is only based on the needs of "calling" and is "similar" as traditional soft exchange technology. There are even some soft exchange equipment manufacturers to "mislead" users and try to delay the popularity of IMS.

This point of view and practice hindered and restricted the key technology breakthrough and research of IMS technology in the digital transformation of power grids.

2. Insufficient awareness of IMS technology advantages

IMS, as an international communication technology standard, has a low popularity among ordinary users. In fact, the technical advantage of IMS is very obvious. It is more "soft" than soft exchange, more standardized business definition, and higher security and reliability. The main advantage is:

1) Multimedia communication switching capabilities

Multimedia exchange is the key to IMS different from soft exchange. IMS not only supports SIP protocol video calls, but also supports Volte/Vonr video communication, and has multi -view interaction with different RTC and monitoring media flow.

In addition, IMS also has a full -business call transfer capacity involving emergency communication guarantee.

The evolution of the IMS underlying technology architecture and the optimization of key technology standards have greatly promoted the business model and application landing.

2) The important role of standard leading multi -system integration

IMS can not only realize the VoIP business of soft exchange, but more importantly, it will effectively manage network resources, user resources and application resources to improve the intelligence of the network.

Leading multi -system (subsystem) fusion with IMS standards allows users to across the network and use multiple terminals to experience the fusion communication experience.

3. Insufficient opening of IMS technology leads to difficulty in the formulation and application of standards

The application of IMS is not satisfactory, and it has a certain relationship with the global application of IMS in the exploration stage. The more critical reason is that the manufacturer's openness is insufficient.

Although IMS is a technical standard, applications need to be developed in accordance with the user's own needs. In view of the lack of openness of equipment manufacturers, even if the State Grid has strong professional development capabilities, it cannot effectively participate in the research of key technologies for the IMS standard formulation and application implementation. This involves issues such as building zero -trust information communication network, last mile access, multi -system collaboration and application interoperability, etc., and directly restrict the research and digital transformation of advanced technologies such as AI, big data, and cloud computing to digital transformation. explore.

█IMS's role in the exploration of 5G application of power grid

As early as 2019, domestic operators officially commercialized 5G, and in about 2017, the Electric Power Special Network enabled 5G application research.

Since then, for the various application scenarios of "electricity+5G", the group headquarters and local power grid companies have cooperated with different communications operators to conduct deep pilot tests.

For example, Shaanxi Electric Power Co -partners have launched the first pilot of power applications with 5G 5G -frequency band 5G of 700MHz.

The pilot mainly combines the power supply service command that is currently unable to command specific staff, cannot supervise and control site work conditions and progress, cannot accurately control the command and command, command and other businesses, etc., and conducts the application of 5G in the application of single soldiers and emergency repair. In -depth testing and verification.

First of all, based on IMS technology standards, under the guidance of the team of power experts, the first international 5G physical isolation multimedia communication gateway has been developed to solve the obstacles of the power IMS and operator IMS core network.

Secondly, through the development of two -way four -factor terminal KEY encryption technology, further strengthening the security isolation review of the interoperability of the video business with the IMS dedicated network, and build a security -based zero -trust information communication network system. In this way, the two -way command system that has no scope of use and scene restrictions has been established to realize the access of single -soldiers' devices and complete the supervision of single soldiers.

After the 5G pilot application verification and development, a number of key technical obstacles to restrict the application of application landing were finally solved.

█ Conclusion

IMS technology itself is mature enough. Since the introduction of IMS in the entire domestic operator 4G network, IMS has achieved many results and experience. However, because of key technical obstacles, professional cognition, business models, and openness, it has been in the exploration stage, and the application of IMS still has a lot of room for landing.

In September 2021, the three domestic operators realized the interconnection between IMS networks, indicating that the construction of a new communication network ecosystem led by IMS as the standard kicked off.

The State Grid Corporation of China has creatively proposed the strategic goal of building a "three -type two -network" world -class energy Internet enterprise in response to the development trend of the integration of energy revolution and digital revolution. Shaanxi Province actively responded to the spirit of dual -carbon and digital transformation exploration documents proposed by the State Grid, took the lead in carrying out the pilot application of IMS technology in the power grid, and achieved the leading results in the country.

It is believed that over time, the integration of IMS and electricity network communication will become closer. IMS will germinate in more special network scenarios, and hatch a variety of digital multimedia applications to help enterprises improve production efficiency, improve business processes, and ultimately help enterprises successfully achieve digital transformation.

Author of this article: Hao Lihong, Liu He, Ma Yuanlin, Liu Xin, Xiao Zao Jun

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