Advantages of GPON access technology applications

GPON access technology is widely used. So I have studied the advantages of GPON access technology. I would like to share it with you here, hoping it will be useful to you. As defined by GSR, key features of GPON access technology include:

1. Full-service support. Including voice (TDM, SONET/SDH), Ethernet (10/100 BaseT), ATM, and leased line;

2. The physical coverage is at least 20 kilometers. The protocol supports a logical coverage distance of 60 kilometers;

3. Various rate options with the same protocol are supported, including symmetric 622 Mbps, symmetric 1.25 Gbps, Gbps downstream data streams, and 1.25Gbps upstream data streams;

4. Powerful OAM & P functions to provide end-to-end business management;

5. Implement Security Protection of downstream data streams at the protocol layer through the PON multicast feature. Specifically, these features provide network operators with three key advantages: Gigabit rate, maximum performance and network efficiency, excellent flexibility and scalability:

1. speed and flexibility. The GPON access technology provides a wider data rate range than its competing technologies, up to 2.488Gbps downstream data streams and 1.244Gbps upstream data streams. It also uses a brand new transport aggregation layer (TC), using a GEM-based and frame-based protocol for business ing, which is an optimized version of ITU-T G.7041 green. Because GEM is a general mechanism for simple and efficient transmission of different services, it is an important basis for the gpon tc layer. In addition, the use of GEM obviously supports the TDM business.

2. efficiency. Broadband is a limited resource of carriers. Therefore, it is necessary to achieve the maximum network utilization efficiency and achieve the maximum benefits under the conditions of limited bandwidth. However, because different PON technologies have different characteristics, the overall cost of the solution must be considered comprehensively. The device costs of different PON technologies are similar. For an EPON system, the system requires VoIP and Other Related Devices. Therefore, these devices must be calculated in the cost. In addition, considering the cost per bit and the income that can be obtained from the infrastructure, this 100% efficiency in 50% Gbps is obviously more attractive than networks with a rate of only Mbps and an efficiency of only.

Other issues discussed in this article involve the actual efficiency of different PON protocols. Four factors must be considered here: line coding), pon tc or MAC layer efficiency, transmission protocol (ATM, Ethernet, or Green Line) efficiency, and business adjustment efficiency. By combining these two factors, we can see the available bandwidth defined as "benefit" in the network, as shown in 3.

3. scalability. The key question to consider when the access layer uses a solution is how to carry the increasing number of protocols and technologies. Currently, we must support many TDM and data services, it must also support emerging applications such as the storage area network (SAN) and data video. GPON access technology uses the self-adaptive method of green code to provide a clear conversion path to add these services to PON without damaging existing devices or changing the transport layer. This is in stark contrast to the APON and EPON technologies. The latter two technologies require specific adjustment methods for each business, especially when dealing with emerging businesses.

Benefits of GPON access technology to carriers

1. Economically provide Ethernet services and ensure TDM benefits. GPON access technology supports the introduction of new Ethernet services with higher bandwidth, while providing traditional voice services at a much lower cost than before.

2. Users have higher bandwidth. The GPON solution provides a single optical wavelength at a rate of up to Gbps on the access network, a multi-wavelength rate of up to 20 Gbps in a single optical fiber cable, and a cost-effective T1/E1 and Ethernet connection. The rate of competing technologies is usually only 622Mbps or lower, so it is difficult to continue when any new application is involved.

3. Speech and data are fully integrated into a single optical fiber. The speech and data are transmitted in its own format, without the extra complexity of the network or CPE, and with a longer transmission distance. The GPON solution covers 20 miles from the local end, almost twice the competition technology, and supports redundant topologies to provide protection in the case of fiber circuit breaking.

4. shorter payback period. In regions where fiber optic cables are already installed, the investment cost of the GPON solution is counted from 9 to 16 months, depending on the number of buildings and users covered by the service; the Network payback period for new branch and branch fiber stations is about 12 to 24 months.