Features of GPON Technology-1

- Jul 15, 2019-

Supports source mode TDM, IP data and video services, which include IPTV's "three networks in one" service, and can provide one or more users with the ability to continuously adjust bandwidth over time.
GPON can provide IGMP Proxy and IGMP Snooping multicast functions, which can easily implement multicast control, so as to better meet the needs of IPTV multicast services.
1. Large capacity, can solve the problem of access to the network bottleneck
Downstream 2.488 Gbps, uplink 1.244 Gbps rate GPON(Gigabit) network system, but also can be extended to 10 Gbps through the built-in CWDM module. Such a high line rate will support more services and also mean more revenue.
2. Width and height, resource sharing
GPON has a high bandwidth of nearly 2.5 G, which opens the original bandwidth bottleneck of the optical access network and lays a high-quality bandwidth foundation for the development of new services in the future(IP network TV, triple-network integration). And high bandwidth is shared by a single user(FTTH) or shared by multiple users(FTTB or FTTC, etc.), and can provide priority, QoS guarantees.
3. High Transmission Efficiency
All transmitted data is packaged in a fixed-length frame structure with a new GFP adaptation protocol of 25us, which has less overhead bytes and higher transmission efficiency than APON and EPON technologies; In the case of nearly 2.5 G transmission bandwidth requirements, the transmission efficiency of GPON is 93 %, while the transmission efficiency of A/BPON and EPON is 70 % and 49 %, respectively. GPON has a high line rate and efficiency and partition rate, so the more flexibility it provides.
4. Flexible access network structure, flexible expansion
The GPON system can support a variety of network topologies such as rings and trees. The backbone requires only single-core/dual-core fiber and is connected to various services through the passive fiber distribution network(ODN). GPON has a branch capacity of 1:32, which is beyond the reach of active devices. For example, for a new expansion site, only one core fiber must be drawn from the reserved branch of the nearby passive spectrometer to the new optical network terminal ONT/ONU installation point, and only the number of ONT/ONU can be increased to achieve expansion. Therefore, users can be developed in a rolling manner; Therefore, the construction cost of the network can be greatly reduced. Engineering transmission.

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