The emergence of a new comprehensive Broadband Access Network Technology

The integrated broadband access network is a very popular access method. With the emergence of IBAS technology, I believe that the integrated broadband access network will have a better development. The following describes in detail the main features and advantages of IBAS, I hope to help you understand this technology.

Today, network operators are facing two "Wars", namely, "IP wars" and "Bandwidth Wars ". Who can occupy the commanding heights in these two wars will be the biggest winner in the market.

Considering that network operators are facing two major challenges: IP and bandwidth, Beacon Communication Technology Co., Ltd. sets the development direction of access network products as a new generation of integrated broadband access network based on SDH. IBAS integrated broadband access system, a new product launched, represents this direction. The system should meet the following basic requirements.

MAIN FEATURES OF IBAS
Compared with other technologies, SDH-based access network has great advantages in accessing ultra-large-capacity data service transmission through IP addresses. The new generation of integrated broadband access network is more concerned with the application of IP technology. Foreseeable operators began to look at SDH-Based IP transfer technology-"IP over SDH ". This technology features high transmission efficiency, simple network structure, and compatibility with various standards, allowing you to easily implement multi-channel broadcast of a wide range of IP addresses. More importantly, it will be able to transition to a large IP backbone network without having to invest too much in the future, which has a very economic advantage. This technology requires high-speed routers as the core, with the current level of router technology, can not meet the needs of establishing a large IP backbone network at the business transport layer, but in the user service access layer, currently, IP over SDH can be used for high-speed Internet access and other IP-based service access. The IP packet packets are directly mapped to the SDH frame structure through Point-to-Point Protocol (PPP), and transmitted through the STM-N rate on the line, saving the intermediate ATM Adaptation Layer and simplifying the network structure, reduces transmission overhead and improves transmission efficiency. Because it directly utilizes a large number of SDH devices owned by the operator, the operation cost is greatly reduced.

The xDSL technology based on copper wires cannot meet the needs of massive data service access, such as HDVS. VDSL is not yet mature and is not widely used in developed countries, at present, the maximum downstream rate of ADSL is 8 Mb/s, the maximum upstream rate is 1 Mb/s, And the G of ADSL. lite is a standard of 1.5 kb/s upstream and Mb/s downstream. It only supports high-speed Internet access. Expensive terminal modulation devices limit their applications. It has a certain price advantage, but only makes sense to ordinary household users. It is a transitional solution before FTTH. It is better to select the user community that has laid a large number of coaxial cables for the transformation, but it is more advantageous to create a new residential area for the optical fiber access network. FTTO and FTTB are the most urgent needs for group users who account for more than 70% of telecom businesses, such as office buildings, commercial buildings, large companies, and Fuyu community. Therefore, SDH + PON is considered as a relatively economical technology among many access technologies, and is the fundamental means to achieve full digital access networks.

Real integrated Broadband Access Network
The concept of integrated broadband access network should include at least two meanings: first, it should be able to dynamically allocate bandwidth resources between broadband services and narrowband services, at the same time, it can provide broadband/narrowband compatible service interfaces and cannot simply provide various service access functions. Second, comprehensive system features should be presented, including integration of wired and wireless networks, integration of active and passive sources, and integration of monitoring and management. At the same time, good adaptability is required to ensure that the business can be extended to any corner at a low cost.

The integrated broadband access network is a rapidly developing network. Some technologies that can be used for access networks are still emerging. No one can predict what new access services will emerge in the future, especially broadband services. Therefore, to measure the quality of an integrated access network product, you can't just look at the number of types of services it supports, but its wide/narrow compatibility technology. For example, simply using a broadband and narrowband hybrid insertion box will inevitably involve bandwidth adaptation for narrowband services, artificially increasing costs, it is necessary to constantly change the design to meet business needs. If bandwidth can be dynamically allocated, no matter how the broadband service will develop in the future, you only need to develop the corresponding interface disk to meet new business requirements without making major changes to the device, this reduces the development cycle and costs.

Network Management System meeting TMN requirements
For a specific access network, it is not only a single access technology, but also a comprehensive use of multiple access technologies. In addition, the access network itself is constantly evolving, and new technologies for access will constantly emerge. to manage such a complex and constantly changing network, the Network Management System of the access network must be comprehensive, flexible, adaptable, real-time, and sustainable.

Currently, the access network management system running on the internet is mainly a centralized monitoring system provided by the access network device vendor and a small number of network management systems. devices of different vendors cannot be integrated into a unified network management system, it increases the cost of operators and is not conducive to the further development of access networks. The construction of access network management should adopt standard management protocols in an open environment to transmit standard management information and ensure the high adaptability and sustainability of network management. In the construction of access network management, due to the technical characteristics of the integrated broadband access network, the network management system must have good adaptability and sustainability, the TMN Technology ensures the smooth transition and sustainable development of the network management system.

Another effective way to improve the network management system is to use new achievements in the computer field, such as Web, CORBA/IDL.
The Application of CORBA technology to network management can solve the problem of interface definition between multiple network element devices or operating systems. CMIP-Based Mature Q3 interfaces will be adopted at the Network Element Management layer, while the network management layer and above will be supplemented by CORBA to achieve interconnection and intercommunication between management systems. On the other hand, you can easily establish a multi-layer Distributed Management System for Monitoring and Controlling various types of physical and logical network resource exchanges and transmission resources) to exchange management information between management processes.

Currently, you can log on to the TMN operating system through Web. In this way, the management of the system can be extended to any location, without having to operate and maintain the center; or, in this way, the management can be extended to the final telecom users. The quality of integrated broadband access network construction directly affects the social and economic benefits of telecom operators. users who have access networks have users. With the entry of the WTO, the telecom operation market will face fierce competition. The integrated broadband access network is an important means for operators to gain access to major customers. Therefore, access networks that account for 60% of the total investment of telecom networks will play an important role in future telecom competition.

1. Full explanation of Broadband Access Network Technology
2. Overview of broadband wireless access technology
3. Discussion on the Development Trend of Wireless Network Access Technology
4. Quick Access Network Management
5. Analysis of core technologies of Broadband Access Networks