POTN - the only way for network integration in the new era

In the 21st century, the communication network on which social communication depends is undergoing tremendous changes. The reason is due to the rapid development of communication needs. In recent years, the number of users of communication devices such as mobile phones has exploded, and the demand for bandwidth has increased accordingly; due to the rapid development of the Internet, users are increasingly relying on communication networks to obtain relevant information, which has led to higher requirements for the types of services that communication networks can carry; in recent years, high-definition video consumption such as 4K and 8K has received more and more attention, and its requirements for communication Internet are also rising. In general, the requirements for optical communication networks in the new era are as follows.

Ultra-high-speed optical transmission applications are imperative

The requirements for current optical networks are increasing day by day. The era when people only surfed the Internet to send and receive emails, browse the web, read the news and play games is long gone. The current Internet is a new type of Internet that must meet the requirements of high-speed and ultra-high-speed downloading resources, watching videos, etc. Among them, the "fast Internet access" in people's mouth is the demand for ultra-high speed of the current network.

With the advent of the Internet+ era, various new applications are emerging one after another. For example, the further popularization of high-definition videos such as 4K and 8K has posed higher challenges to network bandwidth requirements. The demand for ultra-high-speed interconnection between IDC computer rooms has also become more prominent with the widespread application of cloud platform big data centers. At present, 100G technology has matured for commercial use, but facing the pressure of tenfold or even a hundredfold growth in business data traffic, the demand for ultra-100G transmission is becoming increasingly obvious. The continuous increase in speed is the eternal law of the development of optical communications. The emergence of 100Gb/s, 400Gb/s and Tb/s will meet the rapid growth of future business.

Figure 1 The explosive growth in demand for optical networks is seriously inconsistent with the current situation

The convergence of IP and optical networks - the way forward

The current communication network uses multi-layer and multi-domain networks to carry services, with a wide variety of equipment types. The packet processing capacity of massive data has increased exponentially, resulting in tight computer room space, high energy consumption, and low efficiency. Multiple networks such as PON, SDH/MSTP, IP bearer network, and WDM have caused operators to have a long service opening cycle and high labor and operation and maintenance costs.

Based on All-IP, IP metropolitan area network equipment including PON, PTN, and IPRAN can realize unified bearing of all services including fixed, mobile, dedicated line, cloud and other services, and therefore become the mainstream choice for comprehensive bearing in metropolitan area networks. The rapid growth of ultra-large bandwidth services such as LTE, home broadband customers, corporate customers, ultra-high-definition IPTV, cloud, and C-RAN has caused explosive growth in metropolitan area network traffic, with the ratio of metropolitan area network traffic to backbone network traffic reaching 3:1. In order to solve the problem of optical cable capacity, OTN has entered the city and introduced into the metropolitan area network. However, at present, IP is flexibly scheduled on the upper side, OTN is transmitted in the pipeline on the lower side, and the networking is superimposed. They are still two independent networks, and the layers are still not simplified enough, and the problems mentioned above have not been completely solved. The deep integration of IP+optical has become the main trend of future network evolution.

Figure 2 POTN technology carrier - integration of three major technologies

Intelligent and transparent networking-the best choice

In today's era, users' requirements for the network can be divided into two aspects to some extent: intelligence and transparent networking. Intelligence means that users do not need to manually configure business and other related information. They can configure and optimize the network according to multiple aspects such as network transmission performance. Users only need to use certain terminal controllers to achieve complete control of personal or other large networks. It is simple and greatly improves work efficiency with extremely low error rate; transparent networking. At present, users' pursuit of technology is not only about how many powerful functions it can achieve, but also pays more attention to the simplicity and operability of the network. Transparent computing is a computing mode in which users do not need to perceive the specific location of computer operating systems, middleware, applications and communication networks; they only need to select and use corresponding services (such as computing, telephone, television, Internet access and entertainment, etc.) from various terminal devices (including fixed, mobile, and various types of terminal devices in the home) through the network according to their own needs.

FiberHome POTN equipment - the best POTN solution

The new generation of POTN equipment FONST 6000 launched by FiberHome is a new type of communication equipment that is oriented to future high-speed and ultra-high-speed transmission, IP and optical integration, intelligent and transparent networking, and SDN. According to senior technical experts of FiberHome, FONST6000 is mainly suitable for large nodes such as national trunk, provincial trunk, and metropolitan core. In the process of network evolution towards ultra-large bandwidth and extreme simplification, this product will provide operators with the best service bearing solution. Its features mainly include the following aspects:

Figure 3: FONST 6000 U series POTN product family

• Large platform - realizes large capacity and ultra-high-speed signal transmission
• It has the industry's largest single-slot capacity of 500G and can be upgraded to 1T, easily handling single-wavelength 400G/1T applications.
• With the highest integration in the industry, a single slot has 5 100G branch optical ports, 2 100G coherent line optical ports, and 1 400G coherent line optical port, effectively improving the access capacity of the equipment.
• It supports flexible switching of multiple modulation modes such as 200G PM-16QAM, 200G PM-8QAM, and 100G PM-QPSK to cope with different practical scenarios.
• Unified cell cross-connect core—realizes the ultimate integration of IP and optical networks
• It has a cross-connect capacity of 32T and can be smoothly upgraded to 64T to better meet the scheduling needs of massive data in network super nodes. It adopts a unified cell switching core, which is flexible in scheduling and highly scalable. It can achieve mixed access of TDM services, ODUk services and Packet services in any proportion. It is flexible in networking, can greatly reduce equipment power consumption and volume, improve transmission efficiency, and promote network flattening.

Figure 4: Unified Source Switching Core

Figure 5: Network flattening example

The times are constantly changing. FiberHome Communications follows the trend of the times, always thinking about what customers are thinking about, constantly optimizing products, improving solutions, and making every effort to provide customers with high-quality network solutions. POTN is an important trend in the future development of networks. For this reason, the FiberHome FONST6000 U series product family is ready to go and will definitely provide strong support to customers. FiberHome Communications has been working hard to become a qualified optical communication expert.