Market Application of Fiber-based Broadband Access Network Technology

Broadband access network technology is still developing very rapidly. It does not matter if many people are not familiar with the fiber-based broadband access network technology. After reading this article, you must have gained a lot, I hope this article will teach you more things. With the emergence of optical fiber technology, optical fiber-based access networks have become one of the optional return solutions for traditional businesses/networks due to their powerful cost advantages. With the popularization of FTTH networks, a large number of optical fiber resources can be used near the site of the base station. At the same time, the Wireless Mobile Data Service has an urgent demand for large traffic and large bandwidth. The industry is increasingly demanding to use the broadband access network technology to carry mobile traffic.

The Broadband Access Network Technology Based on Optical Fiber Technology carries mobile services and must meet many technical requirements. Generally, the base station E1/DS1 needs to be connected to RNC/BSC, and the Data grouping network is used to replace the traditional TDM return network. A key technical requirement is high-quality transmission of reference clock signals, to ensure the stability of clock signals.

The ON technology can meet the technical requirements of traditional base stations. First, the GPON platform can transmit the reference clock in the physical layer in NTR mode, and secondly, GPON can meet the latency and jitter requirements for transmitting real-time traffic, this is mainly due to the flexible deployment of QoS by the GPON optical fiber broadband access network technology. The third GPON can meet the requirements of multiple types of optical fiber protection switching mechanisms of the ODN network, and is capable of meeting the switching time of less than 50 ms.

As the world's largest access network equipment vendor, Alcatel-Lucent currently shares the world's largest GPON market. With the large-scale deployment of GPON technology and network in the fields of triple playback and business customer services, many GPON customers have asked ALU to develop a commercial solution for returning 2G/3G base stations on the GPON platform, these carrier customers include France Telecom, KPN, Vodafone, and Indosat.

Currently, there are two main solutions for returning GPON mobile base stations. The first is to simply carry the data services of mobile base stations. At present, more and more base stations meet IPRAN standards; the second is to carry data and voice services of mobile base stations at the same time. To meet the requirements of the above scheme, Shanghai Bell developed a variety of Clock Synchronization technologies based on the GPON platform: 1) IEEE1588V2 network clock synchronization, mainly used to meet the precise time transfer requirements of 3G base stations; 2) synchronous Ethernet, meeting the frequency synchronization requirements of the Base Station; 3) NTR clock synchronization function.

At the same time, Shanghai Bell actively supported the solution proposed by the operator to use the GPON network architecture to integrate CDWM technology to achieve RRU to BBU pull far, this solution will effectively reduce the construction and O & M costs of operators on the base station's supporting facilities.

With the popularization of wireless mobile broadband access network technology, GPON can fully leverage its advantages in large bandwidth, high quality, low cost, and play an important role in areas such as WLAN Network return and home base station return. In the TPSDA2.0 architecture advocated by ALU in the global market, the positioning of GPON is very high, not only to carry data, HD video and high-speed broadband access technology at the same time access, in addition, it must meet the requirements for 2G/3G base station return and TDM Service Access of traditional enterprise customers. This also fully meets the requirements of mainstream global operators to set GPON as a standard for full-service access networks.