Why is 5G network slicing an IoT application throat?
2020-02-16 12:06:56
In IoT applications, 5G network slicing can provide better service and enhance reliability and security. 5G is a next-generation mobile communication network technology that offers a number of key benefits for IoT applications, including low latency, high bandwidth, and long-term, dense network coverage for indoor and outdoor applications. Many companies seem to be aware of the huge potential of 5G in the future. In the middle of 2018, 66% of the 5G use cases and adoption surveys conducted by research firm Gartner indicated that they plan to deploy 5G next year (2019), 59% of which said they regard the Internet of Things as the main use case, with the main purpose of improving Operational efficiency.
Another important advantage of 5G is network slicing, where mobile network operators can split their physical networks into slices that can be assigned to individual companies or ecosystems for their own use. The parties that include traffic in one slice can get quality of service and reliability guarantees, such as ensuring that the latency of an industrial IoT application does not exceed a certain number of milliseconds. The ability to isolate traffic in a slice can also translate into enhanced security.
This is a way to build a network that can support multiple categories of services in an efficient manner on the same network. Service providers don't build their own private networks just because of the low latency, so they need to slice their networks in some way to meet these needs.
Network slicing is just one of the few options for providing 5G products to businesses. There are different ways to build a 5G architecture for an enterprise: a dedicated network that can be built for the enterprise, or a service provider that operates as a dedicated network service on the client side, or as a dedicated part of the public WAN.
For companies that want to use 5G to build their IoT architecture, a serious news is: It is unclear how long 5G public network connectivity and coverage and 5G network slicing will be open to the enterprise. Gartner's research shows that when mobile operators build 5G networks, they will pay more attention to the consumer mobile broadband market rather than investing in advanced network concepts, such as edge computing and network slicing required by certain enterprises and industries. This means that a company with a rapidly evolving IoT architecture needs to wait a few more years to fully own its own 5G network.
Although large-scale use of 5G network slicing may take several years, the good news is that network slicing is not an architectural concept that necessarily requires 5G. It can be used for 4G or 3G and can be done without 5G because it is a common network concept. However, mobile operators may not have seen a large demand for network slicing in the market, and with the advent of 5G, the expected application development can truly meet this demand.
Another way to think about network slicing is to think of it as a product of mature virtual private network models (VPNs) and network virtualization trends.
VPN coverage is usually limited, and network slicing can extend a dedicated path on the network, from the client to the mobile operator's network core, which VPNs cannot. In addition, network slicing can isolate services from each other so that users can allocate resources to services that cannot be used by other network on-chip services or even on other network-on-a-chip services. It's like running multiple different networks on a single physical network.
Network slicing can access the network, transport network or mobile core wirelessly. If the mobile operator wants to guarantee the quality and delay of certain types of traffic (such as IoT applications), it can be carried out in a wide area, and the slicing is likely to extend to all. These parts. The network slice will start from the client device, which can be an IoT device and then become a dedicated channel on the mobile air interface. It will continue to be part of the transport network, up to the core.
Service providers can deploy several different network slices on their core and wireless access networks, dedicated to different traffic types. Some vendors with large numbers of customers in specific vertical industries can create slices for each vertical industry to isolate mission-critical traffic from other vertical industries. Large enterprise customers may get dedicated "hard slices" of the network, and such slices may contain many "soft slices" of different services and traffic types for the enterprise. For example, one for ultra-low latency traffic, one for high bandwidth traffic, and one for services that require high flexibility.
With the development and evolution of IoT applications and other kinds of services, such as high-resolution video, enhancement and virtual reality, the number of network segments that network operators can support in their networks may increase. Creating thin network slices may reduce the quality of service they provide, and dramatically increasing the number of network segments may present network operators with network management challenges.
However, the reality is that it may take several years for network operators to address these issues. The current demand for network slicing is low, and operators may still need to develop business models and pricing for their slicing. After all, dedicated network resources are not cheap for businesses. Different network operators also need to seek interworking protocols for network slices to achieve the purpose of transmission across multiple networks when needed. In addition, as Gartner points out, network slicing is not their primary task as mobile operators move to the next architectural evolution that changes the rules of the game.
An architectural evolution
Although network slicing is feasible today, 4G and earlier generation networks are considered "hard" networks, while 5G features - high speed, low latency, wide connectivity means that it can be designed to support Higher quality and guaranteed service. Evolving enterprise and industrial IoT environments can be a driving factor, driving the emergence of more service-rich applications that require lower latency, which in turn will motivate more operators to create network slices.
However, with the advent of 5G, it will be integrated with other evolving technologies and network architecture concepts such as NFV, SDN, cloud computing and edge computing, and changes in base station design, giving mobile operators more consideration.
5G gives operators the opportunity to rethink how to build their networks in a more efficient way.
Network slicing is a step beyond VPN, which also makes it sound like a not too distant conceptual relationship, such as Network Function Virtualization (NFV), which allows virtualized network resources, as well as software-defined networking (SDN), which Separate control plane functionality from data plane functionality for more centralized, flexible, and programmable network management.
NFV and SDN are expected to be more integrated into mobile operators and enterprise network architectures because they can help these companies scale and manage their networks in a more cost-effective manner. With the development of network slicing technology, it can be implemented independently of any technology, but it can also be implemented by using the same principles of the two technologies. For example, if slices extend to the carrier's core network for expansion, NFV and SDN can be used for network resource allocation and control, which will also require operators to achieve end-to-end service coordination in their networks.
At the same time, network slicing will also appear in the 5G world, and the core and edge locations of mobile networks will become more flexible concepts. With the Internet of Things, more data calculations and analysis can be done on edge devices, edge clouds or mobile network towers. In addition, the base station is evolving from a physical unit to a separate radio from the baseband component, and the radio is distributed closer to the user, further redefining the edge.
Today, the edge of the network may be in different places, from the radio to the very concentrated core network, everything. If there are 50,000 radios in the network, there may be 50 core sites, so one core site can provide 1000 radios. As network slicing plays a role in this mobile architecture, operators will need to determine where to deploy the gateway to handle different applications.
At present, network slicing still stays at the conceptual level, and how it quickly becomes a network architecture also depends on mobile network operators. Gartner said that companies looking to use 5G to solve IoT latency may be able to achieve this faster if they commission a technology provider or network operator to build a 5G private network. If companies choose this approach, they must also understand that private networks are expensive and difficult to manage, and may require spectrum licenses. In addition, they may be suitable for IoT traffic and applications that are not distributed across a wide range of campus environments. Seeking a broader range of solutions to solve business, the network sections may be the ideal choice, but they need to wait for how long? (Author: big meow)
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