Today, the most common use of communication networks is 4G networks. With the maturity of 5G technology, it is believed that in the next five years, 5G networks (fifth generation mobile communication technology) will become a hot spot in the field of information and communication. The rapid development of IDC demand expansion period, 25G The demand for high-speed optical modules such as optical modules and 100G optical modules is growing rapidly.
Features of 5G network
The 5G mobile network provides three types of services: enhanced mobile broadband (eMBB), ultra-reliable and low-latency communication (uRLLC), and massive machine-type communication (mMTC). large; uRLLC business is oriented to real-time control applications such as industrial automation, with low latency and high reliability; mMTC is oriented to IoT applications, with many connections and low traffic.
The 5G Radio Access Network (RAN) is re-divided into Active Antenna Unit (AAU), Distributed Unit (DU), and Centralized Unit (CU). The core network is gradually shifting from centralized deployment in the 3G/4G era to cloud-based and distributed deployment. , The core network of different services is moved to different locations to meet the requirements of low-latency services and improve user experience.
1. Large bandwidth
2. Low latency
3. Traffic Mesh
4. Network slicing
5. Gradual evolution from NSA to SA
The 5G network construction mode is divided into independent deployment (SA) mode and non-independent deployment (NSA) mode: in SA mode, a new wireless and core 5G network is built, and the two networks of 4G network and 5G network operate independently; NSA is a gradual evolution. The network technology solution, through the existing resources of 4G, is only enhanced on the 4G network, and provides services for 5G in the form of partial expansion, and gradually evolves to 5G as the 5G business continues to mature.
The 5G bearer network uses 10 GE and 25 GE interfaces to access the base station on the user network side interface (UNI). The network side will introduce 25 GE, 50 GE, and 100 GE interconnection technologies. In the future, the metropolitan area may move to 200 GE and 400 GE Link evolution, so 5G network construction will require optical modules with the characteristics of integration, miniaturization, high speed, long distance, low cost, and low power consumption, such as 25G optical modules and 100G optical modules.
25G optical module/100G optical module development trend
The rate of the optical module has always been the focus of the market, according to the rate can be divided into 622Mb/s, 1.25Gb/s, 2.5Gb/s, 10Gb/s, 40Gb/s, 100Gb/s and so on. The realization of 100M fiber-optic access to the home has increased the pressure on the optical interface from the access layer, and the optical interfaces at all levels are under pressure step by step from the bottom to the top, which has promoted the demand for high-speed optical modules; with the deployment of 5G, operators need to deploy wider The bandwidth realizes the application of large flow data, such as telemedicine, VR, 4K video, etc. Therefore, all levels of the mobile network must have higher speeds, which also promotes the development of 25G optical modules/100G optical modules.
