Analysis on the architecture and platform of the h

2022-08-09
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Analysis of the next generation core architecture and platform

after several years of technical discussion and testing, 3G seems to be ready for everything but the east wind. Compared with the current situation that the fixed core network technology is relatively mature but the investment is relatively weak, driven by the strong investment in the mobile communication market, the mobile core network should be more likely to catch up, and quickly build into a national scale next-generation mobile core network within a few years, so as to realize the NGN of network architecture and the generalization of network equipment platform

the current perfect financial situation and user growth situation of China's mobile market, as well as the medium and long-term more competitive market and the inevitable downward trend of ARPU, continue to urge equipment providers and telecom operators to provide and build a more cost-effective, more powerful and convenient next-generation mobile core network for future evolution. Specifically, the next generation mobile core network should meet the following requirements:

achieve cost optimization, comprehensively consider CAPEX and OPEX

is conducive to rapid business introduction, including network architecture and equipment transformation,

meets the requirements of telecom/it technology and business integration development, and is more open

while ensuring network stability and quality, and ensuring the satisfaction of end customers

to meet these requirements, After more than ten years of technical preparation and exploration, the communication industry has generally recognized the development direction of network architecture NGN, and gradually determined the development strategy of network equipment platform generalization. The two development directions interweave and promote each other, and together become the core elements of the next generation mobile core network

mobile NGN - everything is ready, only due to Dongfeng

the general recognition of network architecture NGN in the mobile industry should be attributed to the determination of IMS specifications of R4 circuit domain NGN and r5/r6/r7 in 3GPP. At present, NGMN, which is widely discussed in the industry, continues and expands the trend of NGN in its core side architecture

Figure 1: R4 NGN structure diagram

the basic idea of R4 circuit domain NGN is to undertake the definition of bearer control separation of IETF organization, that is, bearer is completed by MGW and control is completed by MGC (also known as soft switch). See Figure 1 for its structure diagram. It can be said that the selection of R4 NGN architecture has been the first step in the development of the next generation mobile core 20 (3) 2 network, and has basically met the corresponding requirements. A brief analysis is made as follows:

cost optimization

can be divided into computer room environment, number of offices, transmission resources, maintenance personnel and other aspects. In terms of the environmental cost of the computer room, since the equipment, especially MGW, generally adopts updated technology, the cost of land occupation, power consumption, air conditioning, etc. can be greatly reduced, and it is estimated that it can be optimized by 70%. In terms of the number and cost of offices, MGC under centralized control can ensure fewer offices, which is especially reflected in the current domestic popular large local group method, which is estimated to be optimized by 50%. In terms of transmission resource cost, since IP is used as the carrier network, the cost can be optimized by at least 50%. In terms of maintenance personnel cost, as NGN equipment generally adopts general IT technologies such as IP, Java and CORBA, the operation and maintenance tend to be consistent, the management network construction tends to be simplified, and the few offices of MGC and the simple maintenance of MGW will lead to the optimization of maintenance cost

the introduction of fast services

can be divided into two aspects: network structure and equipment transformation. In terms of network architecture, since the circuit business is basically completed on MGC without affecting MGW, only a few MGCs need to be modified, which facilitates the introduction of business. In terms of equipment transformation, MGC of some equipment suppliers adopts advanced general platform, and the business development cycle can be greatly accelerated

facing network evolution and integration

considering that IMS has been recognized as the goal of core network development, R4 NGN devices can still be interconnected in the IMS stage, and network devices using a common platform can better ensure their smooth evolution to IMS, so as to ensure network evolvability

network stability and reliability

considering that telecom equipment providers generally adopt strict quality control processes in research and development, and telecom operators also have high thresholds in terms of equipment access, entry testing, etc., after nearly two years, R4 NGN devices have been gradually adopted and operated in 2G networks, indicating that mobile NGN devices have fully reached the capacity of scale commerce

at present, major operators in China have decided to adopt R4 NGN in the core circuit domain of 3G, and a large number of tests have been completed. The test results show that the equipment of various manufacturers have commercial conditions

In recent years, IMS technology has basically been unanimously recognized and supported by the telecommunications industry as a fixed mobile convergence telecommunications target network in line with the NGN architecture, as a competition against the technical architecture developed from Skype, MSN and other Internet, and in ensuring or regaining the value chain control position of telecom operators in the IP network. In terms of specifications, 3GPP R6 and TISPAN R1 have been basically completed, and the contents have basically met the requirements of telecommunications equipment manufacturers and operators for the development and operation of pre commercial and commercial networks

Figure 2: IMS network layered architecture

ims architecture is divided into three levels: business, control and access (see Figure 2). It has many characteristics, such as providing multimedia services, horizontal business structure, access independence and using Telecom "it" Protocol SIP. IMS architecture is the architecture goal of the next generation mobile core network, which has well met the corresponding requirements:

cost optimization

compared with mobile R4 NGN, the devices of various manufacturers have adopted a common platform, which has been more improved in terms of integration. In terms of network architecture and equipment implementation, some equipment manufacturers have considered the evolution of mobile R4 NGN earlier and implemented the strategies of unified soft switch, unified MGW and unified application server, which will make the network evolution cost more optimized

in terms of rapid service introduction

ims has greatly improved the ability of rapid service introduction due to its horizontal service structure. It can provide a variety of multimedia services, greatly enriching telecommunications services, and also provides telecommunications operators with a powerful means to control the electro-hydraulic system to set up two kinds of pressure information service value chain

in terms of network evolution and convergence

ims has been determined as the target architecture of fixed mobile convergence by the industry because of its independence from the access mode, and the technical standards are completed jointly by 3gpp/3gpp2/tispan and other major standards organizations. At present, the industry is also discussing the integration of IMS architecture with cable and other networks

in terms of network stability and reliability

it is believed that after about two years of equipment development, testing, interworking and pre commercial steps, IMS should be able to meet the requirements of large-scale commercial use in 2008

at present, all major operators in China have carried out theoretical research and laboratory testing of IMS, and actively prepared for the construction of the target architecture of the next generation mobile core network

generalization of next-generation network equipment platform - the general trend

you should note that when discussing the elements of NGN network structure of next-generation mobile core network, the relationship between the two and the elements of generalization of network equipment platform has been reflected everywhere. It can be vividly said that NGN network structure is the "table" of the next generation mobile core network, and the generalization of network device platform is the "bone" of the next generation mobile core network

all the hardware and chips of the earliest SPC switches are proprietary to a certain manufacturer, while the chips of the SPC switches widely used at present have basically adopted general chips, but the design of hardware boards and operating systems are still proprietary to the manufacturer. Due to the relatively non openness of telecommunications equipment, the technological development of the telecommunications industry is relatively inferior to that of the IT industry, with rapid technological development and relatively high costs. Various driving forces have accelerated the transformation of the telecommunications industry and made the division of labor more professional

Figure 3: labor division mode of next-generation telecom equipment

see Figure 3 for an example of the labor division mode that is currently widely recognized in the industry. From bottom to top, it is divided into:

chip level

x86 chip has been widely recognized in the industry

the bottom layer accounts for about 61% of Henan Province. The industry has generally recognized the use of Ethernet standards as the physical, MAC and LLC layers to complete the switching function

hardware platform

ATCA platform is more popular in the industry at present. Other coexisting or early ones include CPCI, sun Netra, IBM blade server, etc. Relatively speaking, ATCA is the most open and widely recognized by the industry. At present, moto, Intel, CCPU and other hardware manufacturers have provided commercial ATCA hardware

operating system

the current industry trend is CGL (carrier grade Linux), others coexist or early have sun Solaris, HP UNIX, VX works, etc. CGL is relatively the most open and widely recognized by the industry. At present, RedHat, MontaVista, Novell and other companies have provided commercial CGL software

middleware and protocol stack

in terms of protocol stack, Trillium and other companies have provided various commercial telecommunication protocol stacks. At present, the standard definition of Middleware in the industry is still in progress and is being coordinated by international organizations such as SA. In the near future, it is still provided by telecom equipment manufacturers together with telecom business layer software

telecom business layer

the "application" software of various telecom services is developed by professional telecom equipment providers, and at the same time, the overall vertical integration work is completed to provide complete telecom equipment

The generalization of network equipment platform can truly meet the corresponding requirements of the next generation mobile core network:

in terms of cost optimization,

due to the horizontal division of labor, each level is completed by a number of more professional companies, ensuring the maximization of efficiency. At the same time, it has the corresponding scale effect at all levels, so as to ensure the maximization of cost

in terms of rapid service introduction

due to the adoption of horizontal division of labor, telecom equipment providers can focus more on the development of telecom services, while other corresponding changes to the 2017 automotive lightweight Research Report have been released. For example, the signaling protocol stack is completed by other professional companies, which will inevitably greatly shorten the development cycle of new telecom services. At present, the industry estimates that it can be shortened to about one third

in terms of network evolution and integration

due to the similar division of labor with the IT industry, the lower layers, such as hardware and even the operating system, generally inherit the latest technology in the IT industry to the greatest extent, thus providing a good foundation and possibility for the integration of telecommunications and it networks

in terms of network stability and quality

manufacturers at all levels serving the telecommunications market need to carry out relevant processes in the telecommunications industry, such as standard formulation, technical design, R & D testing, current verification and access, according to the requirements of the telecommunications market, and the final integration work is still completed by the telecommunications equipment provider who is most familiar with the telecommunications network, so as to ensure the stability and quality of the equipment and network

at present, the network equipment based on the general platform has been gradually provided by most telecom equipment providers and has been verified now. We have reason to believe that the telecom equipment of the proprietary platform will be phased out in a few years

the "horizontal characteristics of network architecture" and "horizontal division of labor and vertical integration characteristics of equipment manufacturing industry" of the next generation mobile core network are in line with the inevitable trend of social and technological development, and will certainly promote the smooth transformation and long-term development of the telecommunications industry. (end)

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