From the voice business in the 2G era, to the rise of data services in the 3G era, to the popularity of video services in the 4G era, the development of communication technology has quietly changed people's lives. In the future, 5G will meet the development needs of mobile internet and Internet of Everything. The popularity of ultra-high definition, 4K and immersive video will drive a significant increase in bandwidth rate. As the pipeline transmission platform between Laton wireless and core network, the bearer network needs to meet the trend of rapid growth of bandwidth rate in the future 5G era and provide guarantee for the differentiated needs of various services.
Carrier-oriented network for 5G requires continuous evolution of Ethernet bandwidth
In response to the massive connection and traffic surge in the 5G era, the bearer network has the ability to deploy and evolve rapidly and economically, which is the key for operators to seize the 5G opportunity to play commercial value.
According to the wireless base station bandwidth estimation method provided by the NGMN standardization organization, it can be inferred that the 5G-based bearer network needs to have the networking capability of the access ring 50GE~100GE and the convergence ring 200GE~400GE. NGMN believes that to achieve the 5G era business functions, the wireless spectrum efficiency needs to be greatly improved compared to the spectrum efficiency of the 4G era, and the peak bandwidth and the mean bandwidth of the 5G base station will also be greatly improved. For the typical station type 4G and 5G common base station sites, the bandwidth requirement of the 5G bearer network for the access ring is about 3 times higher than that of the current 10GE ring. According to the average growth rate of mobile actual traffic of 61% per year, and considering the access convergence convergence ratio, the demand for convergence ring bandwidth will exceed 100GE.
The technical development of optical interfaces and the support of the industry chain are important factors affecting the direction of bandwidth development. In recent years, with the maturity of 25G optoelectronic devices in the industry chain, 25GE/50GE optical interfaces have been rapidly developed and gradually applied to large data center interconnections, which are favored by the advantages of high speed, high cost performance and low power consumption. The 50GE optical module with 25G optoelectronic device plus 50G PAM4 (fourth-order pulse amplitude modulation) module can achieve higher optical interface speed by only one single-channel optical transceiver component. The implementation scheme is very simple; in comparison, based on The 40GE/100GE optical module realized by the four-way 10G optoelectronic device or the four-way 25G optoelectronic device has a multi-channel optical transceiver component, which is more expensive.
50GE optical module based on 25G optoelectronic device and PAM4 module
In the 5G bearer network access layer, when the 10GE bandwidth is insufficient and the 100GE commercialization is still early, the 50GE network will bring the optimal cost-effective solution to the operator; the 200GE light based on the four-channel optical transceiver module and the 50G PAM4 module The module can be quickly implemented and applied to the aggregation layer of the 5G bearer network. The 50GE networking at the access layer and the 200GE networking at the aggregation layer will lay a commercial foundation for the early construction of the 5G bearer network.
International standards organizations and industries continue to promote the healthy development of Ethernet
In the first 30 years of Ethernet, six Ethernet speeds from 10M to 100GE were generated. With its inherent flexibility, simplified operation and economical deployment, Ethernet has been widely used and enriched around the world. In May 2016, IEEE established 802.3cd Task Force, targeting 50GE Ethernet interfaces based on PAM4 technology and standardization of 100GE/200GE Ethernet interfaces based on this, which will help future cost-optimized high-rate solutions be implemented as early as possible. In addition, the 400GE Ethernet interface standard 802.3bs has been approved and is expected to be released in 2017. The evolution of Ethernet in the future will continue to have a strong vitality.
Flexible Ethernet, which implements network fragmentation based on interface channelization, supports future network architectures that provide differentiated service experiences, and becomes a key direction for the development of 5G bearer networks. In March 2016, the OIF organization of the Optical Network Forum officially released the first-generation Flex-ETH standard based on 100Gb/s rate. Flex-ETH is defined as the middle layer between the Ethernet L2/L1 layers. It supports binding multiple PHYs at a single MAC layer to provide a higher-speed Bonding solution to meet the requirements of flexible and large bandwidth bearers in ultra-dense areas. The rate of the user-side interface is configured as required. The services of different interfaces are isolated from each other. The current configuration granularity is 5 Gb/s, which will reach 1 G/ps granularity in the next-generation Flex-ETH standard. The quality of service can be guaranteed through dedicated hard pipes. And security, providing low latency solutions; in the future will continue to integrate with new network technologies to support the continuous evolution of bearer networks and the development of 5G services.
International standards organizations and industry have supported IEEE 802 Ethernet technology for many years, and are committed to promoting the extensive interconnection of Ethernet interfaces and seeking new applications to continuously expand the Ethernet market.
Huawei launched a single-port 200GE line card to lead the Ethernet ultra-wide pipe
As the bandwidth demand of the 4.5G/5G continues to grow, the bandwidth of the IP bearer network will continue to evolve based on the existing network. The 200GE and 100GE will become the basic rate of the aggregation layer and will be widely deployed. Currently, the 200GE switching network, backplane, connector, and service processing chip industry chain are becoming more mature. The key technologies of 200GE optical module components are also available. 200GE module package, connector, optical device and 100GE can share the industrial chain, and optical module manufacturers can quickly develop and produce. The 200GE module has doubled the capacity of the 100GE module, and the power consumption is not significantly increased. The 200GE implementation has fewer channels, lower power consumption, and longer distance capability than the 400GE implementation. 200GE and 100GE and the future 400GE will coexist for a long time.
In order to match the rapid development of wireless air interface technology and the impact of user traffic surge on the bearer network, Huawei launched a 200GE line card supporting Flex-ETH in 2016 to provide a single-port 200GE ultra-wide pipe to help operators cope with the large bandwidth of the bearer network. demand. With the upcoming launch of the 400GE Ethernet standard IEEE802.3bs in 2017, Huawei will further introduce a single-port 400GE solution to handle the smooth upgrade of the bearer network.
The Huawei IP bearer network solution supports the video service and the long-term evolution of 5G in the future, meets the needs of the evolution of the bearer network and bandwidth growth in the next 5 to 10 years, and builds a boutique bearer network with the best experience for the future.
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