Development Trend of wireless access technology networks

Wireless access technology is currently the most popular access technology. Its Features and good applicability have been recognized by most people, and it also gives users a good network environment, many people may not understand the development trend of wireless access technology. It does not matter. After reading this article, you will certainly have a lot of GAINS. I hope this article will teach you more. In recent years, various wireless access technologies have emerged. Countries have begun to study new 3G and post-3G wireless access technologies. Obviously, in the future, network heterogeneity will become more prominent. In fact, this trend is not only in wireless access technology, but also in terminal technology, network technology and business platform technology. Wide-area, local, vehicle, home, and personal devices, from satellites traveling in space to medical sensors embedded in the body, how to effectively connect terminals with a wide variety of Wireless Access Technologies and obtain required services has become a common concern of network operators and other links in the industrial value chain of the communication industry.

Services and applications have always been the key to the existence of communication networks. The richness and possibility of services are limited by the support capability of the business environment. Therefore, integrating multiple networks to build a mobile ubiquitous business environment (MUSE) will surely become the development trend of the Internet in the future.

1 emerging mobile Ubiquitous Network

The concept of "all IP" network at the beginning of the 21st century convinced people that the dominant development trend of the network in the future must be the integration and evolution of the network based on the IP core network. The IP Internet will evolve to the next generation of Internet (NGI) based on its continued flexibility and the ability to provide all services on the existing Internet. At the same time, the IP network should have the high stability, reliability and high manageability of the telecommunication network, and be able to schedule all network resources independently according to the design requirements of the carrier's business. The manageable IP network will evolve into the next generation network (NGN) in concert with various new value-added business modules ). In the mobile communication field, the evolution trend of the R5, R6, and R7 versions of 3GPP clearly shows that the full IP process of mobile communication and the increasingly personalized service provision capabilities are becoming increasingly apparent.

The problem of the network architecture is the core issue of the future vision, and relevant research has been widely concerned, among which the EU Information Society Technology (IST) series of research projects are the most representative. The Ambient Control Space concept was proposed in the Ambient Networks project. In essence, it is a cross-domain joint Control mode and is suitable for joint Control of wide area Networks such as heterogeneous cellular Networks and heterogeneous fixed wireless access technology Networks, however, the asymmetry between the two systems in the Organization and self-organization mode is not particularly involved in mobile and ubiquitous convergence. In the INSTINCT project, the cooperation capabilities of digital video broadcast (DVB) networks and WCDMA networks in multimedia services are discussed, reflecting the capability differences and complementary possibilities between heterogeneous WAN networks. In the end-to-end reconfiguration (E2R) project, the Software Defined Radio definition (SDR) technology was enhanced, focusing on how networks support reconfiguration in an end-to-end scenario. In addition, there are MAGNET, WINNER, MOBDICK, ANWIRE and other projects, from multiple aspects and perspectives of heterogeneous network problems have made a meaningful research attempt.

The EU's research on Heterogeneous Networks is leading the world, but due to the complexity of the problem, the Technical Positioning of the EU research and the research itself are in the initial stage, at present, there are no in-depth analysis on some key scientific issues, such as the resource efficiency problem of integrated system architecture, scalability problem, and the common contradiction between system self-organization and other organizations.

2 Development Trend of mobile Ubiquitous Network

With the rapid development of wireless technology, communication networks will become more and more heterogeneous in the future, and networks will experience the evolution from isolation to intercommunication, from intercommunication to collaboration, through collaboration between networks, the separation of local strengths and resources are integrated in an orderly manner, so that the system has a series of new functions such as self-healing, self-management, self-discovery, self-planning, self-tuning, and self-optimization, more intelligent.

3 NGMN Network Development Vision

At present, the expansion of mobile services is limited by network capabilities and terminal capabilities. This makes the future design of mobile networks need to comprehensively consider business, terminal and network factors to meet the long-term development of social needs. This is why the next-generation mobile network (NGMN) project was launched: mainstream mobile communication operators hope to provide users with better broadband wireless services. The NGMN project aims to set up clear performance objectives, propose specific requirements, and deploy the broadband mobile network in the future for the next 3G technology evolution direction, to guide the formulation and development of next-generation mobile network standards [1].

NGMN also faces a variety of network interconnection and convergence issues. Figure 1 shows the system architecture of NGMN in the future and the coexistence mode between NGMN and the current mobile network, such as 2G/3G circuit domain (CS. Over time, the traditional CS part will be gradually eliminated. In the future, multiple different wireless access technologies will connect to the public NGMN group domain (PS) core network. Figure 1 shows the basic features of the system, such as NGMN requiring seamless mobility and collaboration between multiple heterogeneous networks. From the operational point of view, NGMN will maximize the use of existing resources, including Site Resources and evolving complete IP Address Transmission and bearer resources, it also provides self-optimized and efficient routes that can be dynamically upgraded. From the terminal point of view, the early NGMN terminal must support dual-mode or multi-mode functions, such as HSPA, EVDO, or GPRS, to ensure that the NGMN terminal can roam outside the NGMN coverage area.