November 14th news, China Mobile = official news shows that China Mobile's 2016 miniaturization access to PTN equipment collection has been completed recently. According to previous announcements, the demand for the collection was 590,000, and a total of 6 companies won the bid, namely Hangzhou Chuling (23.91%), Beijing Huahuan Electronics (19.57%), Huawei (17.39%), and Anhui Tongtong Posts and Telecommunications. (15.22%), Resconda (13.04%) and Jiangxi Shanshui Optoelectronics (10.87%). PTN (Packet Transport Network) refers to an optical transport network architecture and specific technology: a layer is set between the IP service and the underlying optical transmission medium, which is aimed at the burstiness and statistical recovery of packet traffic. Designed with the requirements of delivery, with packet services as the core and supporting multi-service provisioning, with lower total cost of ownership (TCO), while adhering to the traditional advantages of optical transmission, including high availability and reliability, efficient bandwidth management mechanisms and Traffic engineering, convenient OAM and network management, scalability, high security, etc. In addition, PTN supports a variety of two-way point-to-point connection channels based on packet switching services. It has the ability to adapt to various granular services and end-to-end networking capabilities, and provides a "flexible" transmission pipeline that is more suitable for IP service characteristics. It has rich protection. In the case of network failure, the carrier-class service protection switching based on 50ms can be realized, and the service protection and recovery of the transmission level can be realized. The operation, management and maintenance mechanism (OAM) of the SDH technology is inherited, and the perfect OAM system with point-to-point connection is obtained. Ensure that the network has the functions of protection switching, error detection and channel monitoring; complete interconnection and intercommunication with IP/MPLS, seamlessly carry core IP services; network management system can control the establishment and setting of connection channels, and realize service QoS Differentiate and guarantee, and flexibly provide advantages such as SLA. Based on such characteristics, operators' business affairs in the group's major customers have been growing at a high speed. In order to meet the IP of the group's customer business and their rich service requirements, China Mobile put forward more important requirements for the bearer network, which promoted the miniaturized PTN technology. Miniaturized PTN naturally supports IP-based packet services, which can perfectly cooperate with metropolitan area network PTN, which is conducive to providing higher quality networks in long-term evolution. In addition, compared with metropolitan area network PTN, miniaturized PTN saves a lot of investment costs, so It is considered to be the most suitable group customer access solution for China Mobile.
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