Shanghai Bell 100G IP and Optical Transmission Solutions

Shanghai Bell recently held the 9th “Smart Optical Network New Business Forum” and the first “Smart IP New Business Forum” in 2011. At this forum, Bell Shanghai conducted the first real-world demonstration of the joint solution of 100G IP and optical transmission in China, and presented a router with a T-bit capacity and a commercial The future broadband network architecture constructed by the 100G OTN/WDM optical transport platform.

The rapid development of data services, especially video applications and P2P applications, is causing a sharp increase in network IP service traffic. Relevant reports predict that by 2012, the global IP business traffic will exceed 40 exabytes (1018 Bytes). Many operators expect the average annual growth rate of network traffic to reach more than 50%. According to this calculation, the network bandwidth demand in six years will be more than 10 times that of the current network, and in the next ten years, network traffic will likely increase to the current one. hundred times.

Universal Access: Realizing “Broadband Inclusive”

The purpose of universal access is to allow every household and every user to enjoy tens of megabits or even hundreds of megabits of access bandwidth in various effective and flexible ways. This requires the flexibility of wireless access. high bandwidth for flexibility and fiber access.

Shanghai Bell’s EPON/GPON and 1G/10G co-platform 7360 ISAM product series supports a variety of mainstream PON and fiber access technologies, supports a variety of mainstream 10G PON access technologies, and has ultra-high bandwidth support capabilities and systems Matrix switching capability.

Provides line cards with built-in OTDR function, with MPLS-level service support capabilities, and embedded AE service enabling processing chips. It is a platform for G/E 10G G/E P2P mixed insertion, and is more backward compatible with existing DSLAM System 7302 ISAM10G.

With the laying of a large number of optical fiber access networks, network monitoring, fault discovery and location become particularly important. Doing it well can greatly reduce the operating cost of the network. The RSSI displayed by Shanghai Bell this time can effectively monitor the working status of xPON, and warn in advance to avoid damage to upper-layer services.

In order to better realize universal access, at the Mobile World Congress held in Barcelona in February this year, Alcatel-Lucent released LightRadio™ technology, which uses the research results of Bell Labs to integrate the wireless transmitting antenna and the corresponding data processing circuit. In a cube as small as 5 cm square like a Rubik’s cube, and can use software radio technology to send and receive wireless signals of any standard and version, as long as it can supply power and have wired broadband access, the cube can be like today’s huge base station. Work.

Strengthening the Edge: Extending “Broadband Capabilities”

Although it is necessary to deploy 100GE on the backbone network, it is far from enough for operators to reduce the cost per bit. After all, services at the edge of the network are the fundamental reason for the rapid increase in bandwidth. Therefore, high-speed Ethernet at the edge of the network is not enough. It is more important, it can not only help operators to achieve the cost per bit transmission, but also can handle high-value services such as IPTV, enterprise VPN and mobile LTE services, effectively extending broadband service capabilities. Unlike core routers that simply forward traffic quickly, routers at the edge of the network require both forwarding speed and multi-service support capabilities.

As the industry’s first service router platform capable of supporting 100GE, the 7750 SR is very suitable for deployment at the network edge. While helping operators solve the problem of cost per bit, the multi-service processing support capabilities such as performance, capacity, and QoS are not compromised at all.

The leading 100G technology of 7750 is mainly reflected in four aspects:

1. The 7750 SR uses the prestigious 100G chipset FP2, capable of complex and optimized network processing and traffic management at speeds up to 100 Gb/s. Meanwhile, Shanghai Bell’s 100G line cards are built using a single 100G chipset, avoiding the problem of multi-chip combinations.

2. 7750 is also the world’s first service router platform to release 100G line cards, which can significantly promote the development of network edge, metropolitan area network services, and core network high-speed transmission.

3. The platform has multi-service bearing capacity, can fully support home IPTV, VoIP and Internet access at the same time, provide user management capabilities, and at the same time can reflect the advantages of high performance, QoS and service level assurance, which are currently in the three The key functions and performances required to provide better services and services to end users in the context of network convergence.

4. Shanghai Bell’s new 100GE interface module reduces the energy consumption per GB of data transmission to about 4 watts, which is a significant improvement compared with the currently widely deployed 10G and 40G equipment. This further reduces the already very low power consumption levels of the 7750 SR router product.

In 2010, Alcatel-Lucent has cooperated with operators around the world, including Deutsche Telekom, Verizon, Nextgen, etc., to realize the deployment and commercial trial of 100GE. Number one in shipments with more than 1,000 sales records. Rich practical deployment experience also makes Shanghai Bell the best partner of Chinese operators in the field of 100GE.

Application Enablement: Innovative “Broadband Experience”

The broadbandization of the network is only a means, and its real purpose is to improve the user’s experience. For example, business users can be sure that important services can be prioritized and completed on demand and with high quality, mass users can fully enjoy the fun brought by various multimedia information, and mobile users can obtain home-like services regardless of geographic location. and many more. In addition to sufficient bandwidth, network equipment should be able to distinguish different users, different services and different applications, and provide appropriate network support with special means according to the characteristics of different users, services and applications.

Shanghai Bell’s integrated service assurance card fully combines the advantages of deep packet monitoring and caching technology to accomplish this task. Different from ordinary deep packet monitoring, the integrated service assurance card has a built-in feature library for a specific application, and distinguishes the application by analyzing the session process of the specific application. Therefore, other applications disguised as this application or vice versa cannot escape monitoring.

With this technology, not only different users and different services can be distinguished, but also different applications in the same user and the same service can be strictly distinguished. If it is applied to the VPN of the enterprise, it can ensure that the highest decision-making system of the enterprise is unimpeded, and important systems such as finance and personnel are given high priority, ensuring the safe operation of enterprise information and work systems, and improving the experience of enterprise users. The cache of the integrated service assurance card can identify the quality of different video sources of the same video stream, and automatically select high-quality video streams; it can quickly determine the I frame of the video stream and provide fast channel switching including high-definition video; Provide specific video stream segments locally to realize fast retransmission of videos; it can help analyze users’ viewing characteristics and habits, and realize personalized services such as targeted advertisements, thereby improving the experience of home users.

The integrated service assurance card can be installed on the service router at the edge of the network, or can be extended to the OLT where the service is converged, and starts to play a role in improving the user experience at the access point close to the user.

Network Evolution: Lowering the “Broadband Center of Gravity”

The growth of business traffic poses a huge challenge to broadband construction. In response to the 100-fold increase in traffic in the next ten years, if we continue to use today’s network architecture and rely solely on equipment accumulation to expand capacity, it will be unsustainable both in terms of return on investment and power consumption. It will be urgent to make the distribution of broadband more reasonable and make information processing and transmission more cost-effective.

A development trend of broadband networks is that the end-to-end traffic and granularity of the metropolitan area network and core network are increasing year by year, and the proportion of traffic that really needs to be relayed and switched is gradually reduced. The characteristics of each layer in the network architecture are different and can be combined and supplemented with each other. The higher layers in the network, such as the three-layer router, can flexibly process each packet and determine its priority and routing, but the required unit bit processing resources. On the contrary, the lower layers of the network, such as the ROADM and WDM of optical switching, can only roughly process the large particles that have been aggregated into the wavelength order, but the efficiency is high, the required processing resources per bit and the power consumption are low. .

Based on the analysis and understanding of the development trend of the network and the functional characteristics of each layer of the network, Shanghai Bell proposes a converged core network evolution strategy and scheme. Through the organic combination of IP and Optics, use Layer 2 switching technology as much as possible, and use Layer 3 routing only when necessary; use large aggregated particles as much as possible, and deal with subdivided small particles only when necessary; Optical layer switching and optical transport may be used, electrical layer switching and transport are used only when necessary.

The network architecture constructed by following this evolution strategy can effectively reduce the center of gravity of broadband and distribute it as far as possible in the lower layers of the network with high efficiency, low cost and low power consumption, and gradually change from the low-efficiency and high-energy consumption of hop-by-hop processing. The network evolves to an end-to-end high-efficiency and low-energy optical network, and finally realizes an all-optical network.

Operational Transformation: Amplifying “Broadband Benefits”

Only when broadband generates benefits can it enter a virtuous circle and develop healthily. The broadband access of optical in and copper out and wireless and wired integration has laid the foundation for the development of cloud computing and the Internet of Things in the future.

The massive deployment of broadband access will, on the one hand, promote the development of cloud computing technology and the birth of super data centers, and on the other hand will bring great pressure on the metropolitan optical network and the national backbone network. The traditional end-to-end relatively fixed pipe connection will be increasingly challenged, because these super data centers and these broadband access POP points still have peak traffic, valley traffic and average traffic, and their ratio is still the same. Can be very large. Therefore, the fixed connection will cause a great waste of broadband resources of the metropolitan area optical network. If we build a dynamic metropolitan area or even a dynamic national backbone optical network, the end-to-end information flow can be best transmitted, which is not limited by the access bandwidth, and can pass through the dynamic core optical network on demand. relay.

The 100G coherent optical transmission technology first commercialized by Alcatel-Lucent in 2010, in addition to providing a single-channel 100G large bandwidth, can also be used for coherent reception and high-speed sampling, analog-to-digital conversion and digital signal processing. In the process of optical transmission, such as the damage caused by chromatic dispersion and polarization dispersion, the uncompensated chromatic dispersion on the line further reduces the damage caused by nonlinear interference, so that the product of the bandwidth and the distance without electrical relay is greatly improved. The undirected ROADM makes the realization of dynamic optical network possible. By dynamically matching network resources with information flow requirements, saving unnecessary overhead and power consumption can further amplify the benefits of broadband.

As a leader in 40/100GE and 40/100G transmission technologies, Alcatel-Lucent is the only manufacturer in the industry that can provide 100G IP and optical transmission commercial platforms, which fully support various services without affecting performance. In order to meet the needs of broadband development, Alcatel-Lucent actively advocates and implements high-efficiency network concepts and solutions to build an efficient, low-power, and intelligent [email protected] broadband network, successfully achieving a power consumption of only 4 watts per Gbit, helping operators Develop broadband networks in an efficient and energy-efficient manner.

The Links:   LTM08C342F 6MBI75U2A-060