Analysis of the structure and OSI model of 5g communication
With the development of communication networks and the promotion and application of 3G and 4G technologies, the communication technology of the post 4G era was named 5G. 5G communication technology was proposed as a conceptual technology by NTT Corporation in Japan in 2001, and China's 5G concept was proposed at the China International Telecommunications Conference in August 2012. At present, there is no uniform standard for 5G communication technology. Not long ago, it was reported that South Korea's Samsung has developed 5G communication technology, which is named Nomadic Local Area Wjreless Access (NoLA). After using this technology, the wireless download speed of the mobile phone can reach 3.6G/s. This article will briefly explain the concept of 5G communication technology, and combine the current advanced technologies in communication field (such as cloud computing) and conceptual products (such as light field camera, bitcoin, etc.) to illustrate the future development and application prospects of this technology.
1 Introduction5G wireless communication technology is actually a wireless Internet network (see Figure 1), this technology will support OFDM (Orthogonal Frequency Division Multiplexing), MC. CDMA (Multi-Carrier Code Division Multiple Access), LAS-CDMA (Large Area Synchronous Code Division Multiple Access), UWB (Ultra Wide Band), NETWORK. LMDS (Regional Multicast Service) and IPv6 (Internet Protocol). In fact, IPv6 is the underlying protocol for 4G and 5G technologies. 5G technology is a complete wireless communication system without any restrictions, so we call 5G the real wireless world or Wwww (Worldwide Wireless Web).
Figure 1 5G network topology
2. 5G mobile networkFor different RANs (Radio Access Network), it is easier to upgrade a 5G network to a single nano core network using the flattened IP concept. Due to the flat IP, we need to pay more attention to network security. Therefore, 5G networks use nanotechnology as a protection tool to ensure network security. It is undeniable that the key concept of flat IP networks is to make 5G compatible with all networks. In order to meet the user's requirements for real-time data applications, wireless operators must try to transform into flat IP construction. The flat IP architecture provides a way to identify endpoints by symbolic names. This approach does not use normal IP addresses like a layered architecture, which brings more benefits to mobile network operators. With the transition to a flat IP architecture, mobile operators can:
â— Reduce network elements in the data channel, thereby reducing operational costs and capital expenditures.
â— In the application of new applications, the loss of data during transmission is reduced to some extent.
• Minimize delays throughout the communication system and if the delays in the wireless link are enhanced, they are fully identified in the system.
â— Independently improve the wireless network and the core network separately, so that it has better scalability than the former network, and can also establish a more flexible network structure.
• Develop a more flexible core network that can serve as a base station to provide innovative services in mobile terminals and general IP access networks.
â— Create a more competitive platform with price and performance advantages for wired networks.
The flattened network structure removes the layering in the voice function orientation in the network. In order to replace the data packets that are covered in the voice network, a more simplified data structure can be constructed, so that various elements in the network chain can be removed.
Figure 2 shows the system model of the network structure design in the 5G mobile system, which is an all-IP network model for wireless and mobile network interoperability. This model includes a user terminal (which plays a vital role in the whole new architecture) and some independent, autonomous radio access technologies. For each terminal, each radio access technology can be viewed as an IP link that can connect to an external Internet network. However, in mobile terminals, different radio access technologies require different radio interfaces. For example, if we have 4 different radio access technologies, we need 4 interfaces to be implanted into the mobile terminal, and we can ask to activate these 4 radio accesses at the same time.
Figure 2 5G mobile network
3. 5G structure - nano coreThe so-called 5G nanocore actually includes nanotechnology, cloud computing, and all-IP platforms (see Figure 3), and these three technologies also play their respective roles for today's wireless networks.
3.1. Nanotechnology
As one of the important applications of nanoscience, nanotechnology is mainly applied to the operation control in the nanometer range, and the nanometer range is generally 0.1 to 100 nm. MNT_Molecule Nanotechnology is also included in this field. Molecular nanotechnology is mainly used for structural control in atomic engineering and molecular engineering. Nanotechnology was presented at the Tokyo Manufacturing International Conference in 1974. As an important part of the next industrial revolution, it will prompt the communications industry to quickly move to the next generation of communications standards.
Figure 3 5G network structure - nano core
3.2. Nano Terminal (NE.Nano Equipment)
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