ZTE help Indian operator Reliance to build 100G metro optical networks

Recently, ZTE announced with India Reliance Communications (hereinafter referred to as "Reliance") signed a 100G OTN optical transport network orders. Over the next three years, ZTE will provide two cities in Pune and Hyderabad 100G optical transmission network design, site survey, installation, commissioning, maintenance and other services. ZXONE Series devices meet the Reliance offer comprehensive multi-service access and high integration requirements. Low TCO is a major factor in the ZTE she won this order.

Reliance in the Indian market share of 14.35%, is India's top four operators. But with mobile Internet access LTE era, the current network of SDH networks are increasingly unable to carry data traffic surge in demand. ZTE 100G OTN solutions to help Reliance rapidly into the era of 100G metro transport in Pune and Hyderabad two cities, greatly ease the pressure LTE network bearer.

It is reported that ZTE has the industry-leading OTN development platform, its high performance 100G OTN products, easy maintenance, low cost and other characteristics of the most Reliance recognized. ZTE 100G OTN has a high level of integration, from E1 / T1 to 100GE any access rate, client port supports smooth upgrade path 4-22, coarse dense wave unity; at the same time, the efficient performance of the product, to achieve port adaptive, DSS cross , L2 switching aggregation, CPRI transmission and other functions; in addition, OTN package supports the full overhead light layer / dielectric layer control, unified network management easy fault location and service configuration, effectively increasing the efficiency of operation and maintenance.

ROADM market entered a rapid growth period

According to well-known market research firm IHS Infonetics latest report shows that in the optical transmission market, in addition to still maintain a rapid growth outside 100G, ROADM market has become another one star. 2015 second quarter, ROADM market income ratio in the entire WDM market revenue up 45%. The report predicts that, ROADM market in 2015 revenue will grow 12% in 2104, and 2019, the market's compound annual growth rate as high as 12%, which greatly exceeds the entire WDM market compound annual growth rate of 9%, to become the next four years, WDM segment of the market the fastest growing segment.

Figure: Infonetics report ROADM market entered a rapid growth period

As can be seen from the chart IHS Infonetics report, in fact, starting in 2011, ROADM market performance had already started to speed, there's little need to explain that, 100G technology is also starting in 2011 at a global scale commercial. It is a coincidence?

Let's take a look at the status quo of large cities in China, the road to development, and perhaps give us some enlightenment. In recent years, some large cities continue to build and expand roads, often encounter the problem of the transformation of urban interchange. Some design and construction of transportation hub earlier, in the rapid development of today's urban road traffic has become the bottleneck. Similarly, the development of optical networks is also facing a similar situation. With 2011 global begin large-scale commercial 100G coherent optical transmission technology, many operators have seen the super-high-speed optical transmission technology challenge existing optical network architecture, and embarked on a strategy to reshape the optical network architecture project. Therefore, it is not a coincidence, but the optical network development inevitable trend.

Technology and market jointly call new networking technology of optical network

With the rise of Internet penetration to various industries in various fields, as well as cloud computing, big data, networking and other technology applications, data traffic is continuing to grow rapidly. According to IHS Infonetics analytical report 100G module shipments increased from 2011 in 2000 to 2014 or so quickly over 120,000. 100G optical transmission system on a global scale is rapidly expanding. In recent years, the industry has set his sights on Super 100G technology. Alcatel-Lucent deployed the world's first commercial 400G optical transport network in 2013, its 200G wavelength-division-board programmable achieve volume shipments in 2014. According to market analysts predict that by around 2017, 400G will gradually begin large-scale commercial.

You can see from the above data, ultra-high-speed optical transmission technology is rapidly improving the transmission capacity of the fiber, which makes electrical cross-way network to OTN optical network node is facing great challenges. According to the development trend of optical networks, long-distance backbone and metro core network topology often will tend to grid, the dimensions of each node may reach 8-dimensional, or even more. In this case, if pure electric cross 100G OTN networking mode, which means that the capacity of each node will reach 8x8T = 64T. If you consider the way for future 400G OTN network, then the capacity will be close to 200T, which is currently on the market, the largest capacity OTN electrical cross-connect equipment is far unable to meet. Meanwhile, large-scale OTN electrical cross matrix bound to bring higher power requirements and cooling requirements, as well as the difficulty of network evolution challenges operators have realized in the actual deployment of the deployment faced.

Future-oriented development, technology and markets are calling the new Optical Networking technology.

Explore 100G green and energy-saving

With the vigorous development to accelerate and the internet, cloud computing, mobile Internet and other new technologies of China's information construction of new business, the scale of the rapid expansion of the communications network, the communications industry showed rapid growth of energy consumption. Ministry of Industry, to the end of 2015, a communication network to achieve the total telecom business unit comprehensive energy consumption decreased by 10% compared with the end of 2010.

FiberHome positive response to the call of the national energy conservation Ministry of Industry, continued to increase environmental protection equipment research and development efforts, through green innovation solutions and business models to vigorously promote the development of green communications. FiberHome full range of products in terms of energy conservation has excellent performance, including OTN series of energy saving products of the indicators are in a leading position in the communications industry. FiberHome OTN products from "green plan", "green technology", "green operations and maintenance" three aspects to implement save energy and low-carbon environmental protection requirements to green innovative products and solutions to help operators build sustainable development Green communications network.

"Green Plan"

"Green Plan" means the OTN consider energy-saving measures and programs in the planning stage, consider green energy-saving products in the architecture design, software design, power density, intelligent control. In the plan to take into account the problem of resource consumption unit index, selection and technical evolution of materials make full use of resources and so on. Achieve overall analysis of various factors, performance trade-offs, power consumption, evolution and other programming in the planning.

"Green Plan" of the specific implementation is divided into six areas.

First, a reasonable choice OTN electrical cross capacity: Considering the contradictions and large cross-slot bandwidth and the capacity of small particles between business and node traffic to adapt. Demand and slot backplane bandwidth design tradeoffs business diversity.

Second, environmentally friendly materials and efficient software design: recyclable biodegradable materials, and improve resource utilization through the design and optimization software.

Third, the intelligent interface control and energy saving chip: intelligent interface control reduce power consumption, the use of energy-saving chip to improve resource utilization.

Fourth, the green evolution: Planning existing OTN platform upgrade function to ensure that existing investments in the future can be fully utilized. PEOTN OTN is the future direction of development, PEOTN centralized ODUk / packet / VC cross optical cross. OTN and packet services that fuse efficiently, reducing stacking; centralized cross, reduce power consumption; reduce the number of core router interface, reducing capacity requirements. CAPEX savings throughout the network.

Fifth, to enhance integration, the overall decrease in energy consumption: the flames of 10G client-side and line-side interface unit 10 provides an interface for the largest, 2.5G following client-side interface provides 16 single-disc biggest port, electrical cross sub-frame provides a maximum service slots 54 slots, enhance product integration can effectively reduce energy consumption.

Sixth, 100G green design: 100G optical disc industry's highest level of integration forwards, only two slots, 100G transceiver one OTU power (soft-decision FEC) is less than 160W, 100G platform FONST 5000 maximum power consumption of 6500W.

"Green technology"

"Green technology" is through the use of energy-saving mode, efficient and reasonable software design, intelligent service interface control, real-time environmental monitoring, smart fan design, more technology to achieve green energy. Specifically divided into four areas.

First, using IEEE 802.3az-2010 standard: the use of low-power chips, reduce circuit losses, significantly lower power chips and systems to reduce by 50% the physical layer, 70% to 80% of system level power consumption.

Second, the use of on-chip SRAM Stand-by mode: SRAM chip area accounted for more than 90%, so that the free SRAM enters Stand-by mode, the dynamic power consumption is almost zero.

Third, the use of advanced production technology: using 45nm production process, about 40 percent lower than 90nm power consumption of conventional ways to reduce power consumption.

Fourth, the core chip laser control: turns off when idle laser data transmission side, thereby reducing the overall power consumption of the device.

"Green operation and maintenance."

"Green operation and maintenance" refers to green OTN product operation and maintenance savings for carriers to deploy part of the energy consumption. It is divided into six areas.

First, the product of high reliability system design, flexible and diverse network protection and recovery tools, thus reducing manpower and resources invested.

Second, unified network management OTN M2000 system. Intuitive graphical interface, fast and efficient mode of operation, improve reporting statistics, fine-end fault and performance management, to help the network operate efficiently.

Third, the software modular design, optimized database, the function can be configured to turn off redundant functions, operational cost savings, end to end multi-service access platform.

Fourth, a platform for a variety of access methods, to avoid duplication of network resource consumption caused.

Fifth, the rational design of efficient and safe OTN network. Dedicated by the flames OTN planning staff OTNP software, can automatically calculate line attenuation, the control dispersion tolerance, the wavelength rational allocation, a key to configure the optical device.

Sixth, a reasonable choice of cross particle design. Using ODU2 scheduling, each site is a business channel, ease of maintenance and management, to give a one-time site deployment 8 GE business and meet long-term business needs.

SDON technology advantages and characteristics

SDON technology has three major advantages. First, it can effectively solve the interconnection between heterogeneous networks. Through OpenFlow and other related agreements to expand the development of object-oriented interactive control interface enables heterogeneous network information abstraction and cross-layer network control integration, resulting in the access network and the core network, data networks and optical networks, cable networks and between the radio network set up with a unified control system of the new heterogeneous network architectures. Second, the arrangement of optical network to meet user needs. For flexibility in the use of network equipment, operations and sales, and it enables users to faster achieve the desired services. Third, SDON can bring optical network resource virtualization management. It can cover the entire range of network equipment OTN products to better play the advantages of network infrastructure resources, through open unified resource management platform that allows the use of network resources optimized. It features multi-domain SDON aspect of hierarchical control architecture mainly as follows:

1, the whole structure is divided into four levels: APP application layer, Orchestrator total control layer, single domain controller layer, and Optical Network device layer.

2, NBI focus APP application layer interfaces with Orchestrator total controller uses Restful interface mechanism. Restful mechanism architectural style draws WEB services, with no state, to achieve simple and efficient, loosely coupled, scalable and other technical advantages, so as to achieve open control SDON of NBI, programmable, definable and other technical characteristics, provides a natural technology support.

3, SBI interfaces single domain controller layer and between the layers of optical networking equipment and OTN networks as much as possible compatible WASON earlier deployed to ensure network interoperability SDON these network devices, better meet the smooth deployment of business operators upgrade, gradual evolution of ideas.

Software-defined optical transport network make the network should be the need to change

Last year, China established the broadband strategy released two milestones: the 2015 basic realization of urban fiber-to-floor home in rural broadband into the village into the village, urban and rural households broadband access basic to 20Mbps and 4Mbps, some developed cities met 100Mbps; to 2020, a comprehensive broadband network covering urban and rural, urban and rural households to broadband access, respectively, 50Mbps and 12Mbps, the developed part of the city home users up to 1Gbps. This means that in the next few years, operators must continue to upgrade optical networks to achieve these goals. It is worth noting that the network bandwidth is growing at the same time, an endless stream of new broadband services, intelligent optical network flexibility and put forward higher requirements. Promotion of software-defined optical transport network (SD-OTN) to achieve network virtualization to maximize the use of network resources, so that an effective means of networks should the need to change.

Expansion and intelligent optical networks are two main trends of development. Cisco predicts that global data traffic in the next few years will show explosive growth. The next five years, the compound annual growth rate of global traffic will reach 66 percent, the growth rate in Asia as much as 76%. Nokia Communications released a research report pointed out that by 2020, the daily per capita consumption of personalized traffic will reach 1GB. Huawei predicts that the next three years, China backbone network traffic growth rate of up to 70% of the total bandwidth of backbone transmission network will reach 150Tbps, there may even exceed 200Tbps. In anticipation of traffic turmoil, carriers and communications companies are actively studying and deploying 100G and ultra-100G technologies. Single-carrier technology has been difficult to meet the needs of rapid development of traffic, the use of multi-carrier technology to improve spectral efficiency has become the focus of attention of the industry.

At the same time, with the growing number of broadband users, the type of intelligent terminal has become even more rich, cloud computing, big data, networking and other applications rise and gradually becoming more mature. Optical network support broadband services rendered dynamic trends. Traffic Storm is not evenly distributed, network traffic is often at different times are not the same, monthly, daily and even hourly flow situation is different. Such as big game day might have compared with the usual more users watch online live video; and if in the neighborhood during the day tend to be less traffic, more traffic at night, but during the day in the office area in general is more traffic, less traffic at night. If we can achieve dynamic network resource management and scheduling will undoubtedly maximize the use of network resources, thereby reducing overall costs. The conventional automatic switched optical network, generalized multi-protocol label switching architecture has been unable to meet this demand, an urgent need to introduce new technologies like software-defined optical transport network.

Software-defined optical transport network is the direction of the development of next generation optical transport networks, its design ideas from computing software-defined network (SDN). SDN is a new network architecture, network control plane and data forwarding plane will be separated, and programmable control. SDN architecture typical of three layers, the top layer of the application, including a variety of services and applications; middle control layer is mainly responsible for handling data plane resource scheduling, maintenance of network topology and status information; the underlying infrastructure layer is responsible for data processing based on the flow table, forwarding and status collector. Its main advantages as follows: standardization of hardware, reducing system hardware requirements, in order to achieve cost reductions; intelligent network management fully realized by the software to improve the ease of operation; simplifies network configuration process can rapid opening of new business.

SDN application in the main operators in the field of IP data networks, data centers and optical transmission network of the three scenarios. Among them, the software-defined OTN flexible pipes, dynamic bandwidth and programmable three characteristics, it is possible to achieve flexible scheduling hardware, network software dynamically adjust resources will help operators to manage network resources fine. Software-defined optical transport network of programmable optical network transmission controllers and programmable resource virtualization technology to provide efficient, flexible, open network services for different applications. It requires flexible optical, electrical function modules, programmable light system that supports OpenFlow standard control interface, providing an open API.

Currently, SDN standardization work is still in its infancy, software-defined optical transport networks need to overcome software programming optical path flexible switching, software-driven optical transmission adjustment key technology software extensions of optical automatic networking, as it continues to mature and widely applications, broadband network is expected to usher in a new round of changes.

OTN is the best choice for the development of transport network technology

OTN for the application of new technology, but its development has been years of history, has matured. ITU-T from 1998 started the OTN series of standards development, by 2003 the main standard is basically sound, logical interface such as OTN G.709, OTN physical interfaces G.959.1, equipment standards G.798, jitter standard G.8251 protection switching standards G.873.1 and so on. In addition, for OTN-based control plane and management plane, ITU-T has completed the development of appropriate primary specification.

In addition to improving the standard addition, in recent years, OTN technology equipment and testing instruments, it is also rapid progress. Mainstream transmission equipment manufacturers are generally supportive of one or more types of OTN equipment. In addition, the mainstream delivery instrument firms generally can support OTN functionality of the instrument.

With powered and OTN technology business achieved rapid development and growing maturity, OTN test technology has been applied topically or business network. In the United States and Europe, a relatively large network operators such as Verizon, Deutsche Telekom and so has established a G.709 OTN network, as a new generation delivery platform. Expected in the next few years, OTN will usher in large-scale development.

Foreign operators the ability to support the OTN transmission network interface is generally clear demand has been proposed, but the actual network applications ROADM equipment which form the main places, mainly the cost and maintenance of network size and other factors closely associated with network management. Domestic carriers for the development and application of OTN technology is also quite concerned about, from the beginning of 2007, China Telecom, China Netcom and former China Mobile Group and so has undertaken applied research and test validation OTN technology, but the network is also part of the province Local deployed by cross-layer based on OTN equipment OTN-based transport pilot network technology, network node, there ROADM-based OTN equipment. Due to the high cost of ROADM relative to the current maintenance system for maintenance, so ROADM just some operators were using small-scale experiments, and based on cross-layer OTN equipment has been used commercially in large scale China Mobile, China Telecom, China Unicom, radio and television and other major carriers, as well as Southern Power, China Petrochemical and other large private networks.

As the best choice for the development of transport network technology, can be expected in the near future, OTN technology will be more widely used as carriers to create a superior network platform to expand business market the technology of choice.

PMC metro OTN help China achieve 400G and OTN switching technology

Recently, PMC has released its newest DIGI-G4-- latest generation of OTN chip. PMC Chinese R & D Center for Communication Products Division Director Zhang Tianyu introduced to, DIGI-G4 is the first industry's highest density single-chip, can support 400G. Further integration of a large number of equipment manufacturers put the device on the board, resulting in a large power cost increases, while DIGI-G4 to peripheral devices incorporate internal, so that each port 100G power by 50%.

Interview, PMC DIGI-G4 product line manager Kevin representation, PMC developed this chip is completely respond to the needs of the market, that the rapid growth of bandwidth, the bandwidth will double every two years, which in the world are Such a trend. On the other hand, 100G become the standard has become a trend, this standard mainly in the backbone network, including China Mobile, China Telecom is largely concentrated in such a network backbone, certainly in terms of the operators to the metro, these bandwidth from the metro to the demand increase network access, metro bottleneck is additionally backbone.

In addition to bandwidth requirements, is the data center needs. Kevin stressed that large scale data centers, they are to complete the interconnection between the data centers. DIGI-G4 chip design at the beginning of this just like Google, AMAZON have conducted technical exchanges, they are particularly urgent need is encrypted. Light layer of encryption is not enough, mainly because we have to have encryption in the business layer, we DIGI-G4 chip encryption can be done in the 100G OTN, not only in 100G encryption, I can rate the operational level in my son's entire 100G You can be encrypted.

Zhang Tianyu said, OTN switching is actually OTN electrical cross concept think back 45 years ago when the mainstream use in backbone OTN, or one of the technical support line, in fact, a few years ago that is electrically OTN Cross into the mainstream over the past few years, we can see that a carrier is a strategy they deploy the branch line from the previous one turned into OTN switching, China at the forefront, China's leading OTN deployment in the world, We see in the world is a very clear trend in the world's top ten operators have nine full deployment of OTN electrical cross-based network, see the full flexibility of this technology to operators on services.

Currently, the chip supplier in terms of providing light to the equipment manufacturers a chip is not enough, cost pressures down the pressure from the operator level, for equipment operators in terms of R & D investment is controlled, previously invested heavily in software research and development team We do such a transmission device is unrealistic, so a lot depends on chip manufacturers, can have a complete package in the release of the chip at the same time available to them so that they can be completed within a short period of their development.

Zhang Tianyu finally said, PMC continues to invest in software, accounting for the company's software engineers than hardware engineers now, we offer a very complete package, and after the actual deployment verification, to reduce secondary research equipment manufacturers.

OTN development process

Through a new generation OTN G.872, G.709, G.798 ITU-T recommendations are canonical "digital transmission system" and "light delivery system." OTN will solve the traditional WDM networks without wavelength / sub-wavelength service dispatch capability, network capacity is weak, weak protection and other issues.

Optical transport network for IP services, IP transport requirements adaptation service has become an important issue in the further development of optical communication. Optical transport network from a variety of angles and provide a solution compatible with the existing technology in the premise, because the large number of applications SDH equipment, in order to solve the processing and transmission of data services, based on SDH technology developed MSTP equipment and has a large number of applications in the network, it is well compatible with existing technology, but also to meet the transfer function data services. But with the increasing processing power and requires more detailed data services particles, business demand for transport network presented two aspects: on the one hand the transmission network to provide a large pipeline, then generalized OTN technology (in the electric field is OTH, in the optical domain ROADM) provides a new solution that solves the SDH-based cross particles VC-12 / VC4 is small, scheduling more complex issues not meet service delivery needs of large particles, in part, to overcome the WDM System fault location difficult to point to point connection-oriented networking, network capacity is weak, network survivability and ability to provide a means shortcomings weak; on the other hand service optical transport network to propose a more detailed processing requirements, the industry also made a packet transport network solution, the main technologies involved include T-MPLS and PBB-TE and the like.

As network traffic growing demand for bandwidth, operators and system manufacturers have been constantly consider ways to improve service delivery technology issues.

Digital transmission network evolution from the original based T1 / E1 of the first generation of digital transmission network, experienced-based SONET / SDH second generation digital transmission network, to the development in the third generation of OTN-based digital transmission network. First and second generation transport network was originally designed for voice services specifically designed, though can also be used to transmit data and video services, but the transmission efficiency is not high. In contrast, the third-generation transport network technology, from the design to support voice, data and video services to support the bandwidth on demand (BOD) when with other protocols, quality cut of service (QoS) and optical virtual private net (OVPN) and other functions.

In 1998, the ITU Telecommunication Standardization Sector (ITU-T) formally proposed the concept of OTN. From the functional point of view, OTN can be transmitted in the form of all-optical subnet, and the use of light at the boundary of sub - electricity - light conversion. Thus, each subnet can 3R regenerator coupled to constitute a large optical network, as shown in FIG. Therefore, OTN transport network can be seen as the all-optical network evolution process of a transition application.

In the OTN functional description, the optical signal is wavelength (or center wavelength) to characterize. Optical signal processing may be based on a single wavelength, or based on a WDM group. (Based on other optical multiplexing, time division multiplexing, optical time division multiplexing, or optical code division multiplexing OTN, remains to be studied.) OTN can be achieved in the optical domain transfer service signals, multiplexing, routing, monitoring, and to ensure its performance and survivability. OTN can support a variety of top business or protocols, such as SONE / SDH, ATM, Ethernet, IP, PDH, Fibre Channel, GFP, MPLS, OTN virtual concatenation, ODU multiplexing, is the ideal foundation for future network evolution. More and more operators worldwide start constructing a new generation of OTN-based transport networks, systems manufacturers have also introduced a more OTN features of the product to support building the next generation transport network.