Analysis of 10G GPON Technology

With the emergence of emerging multimedia services. The demand for broadband access is growing. Existing EPON, GPON Technology may become a bottleneck in development. Therefore, it is very necessary to start research on next-generation PON Technology. The main development directions of PON technology are: the development of networks to multiple wavelengths. Such as WDM-PON technology; single-wavelength large bandwidth trend. Such as 10G GPON Technology, 10G EPON Technology. WDM-PON is based on a long-term evolution of the new optical network and requires the redeployment of new networks. And 10G GPON Technology is a medium-term evolution plan. On the basis of compatibility with existing GPON ODNs, the transition to 10G GPON Technology is extended by extending the GPON standard.

1.10G GPON system structure

10G GPON system structure. 10G GPON still inherits the typical topology of GPON in the system structure. It consists of an optical line terminal (OLT), an optical network unit (ONU) and an optical distribution network (ODN) supporting 10G rates. In the uplink direction, the TDMA scheme is employed to enable a plurality of ONUs to share trunk channel capacity and channel resources 141. The transmission of the upstream data is controlled by the 0LT. Each ONU field 1 10G GPON topology field transmits user data according to the time slot allocated by the OLT. The time slots used by different 0NUs are different. Therefore, the uplink data generated by each 0NU does not conflict. In the downstream direction, the OLT broadcasts a frame consisting of data packets to each ONU via a passive optical splitter. Each ONU receives all data streams. The specific packet is then fetched according to the ONU’s media access control address.

2.10G GPON  Technology Principle

                                            GPON Principle—-Downstream Broadcast mode

                       GPON Principle—-Upstream TDMA (Time Division Multiplex Access) mode

3.Advantages of 10G GPON Technology

(1)  Compatible with existing GPON. Have enough bandwidth to support multiple new services. And it can be flexibly deployed, which can configure the speed of 10G/10G uplink and downlink symmetry. Can also be configured with 10 (3/2.5G) uplink and downlink asymmetric rate
(2) 10G GPON and GPON have more power. Longer coverage. Therefore, it is not only suitable for laying in dense urban areas, but also suitable for laying in relatively remote rural areas. In addition, it can transmit longer distances. So in rural areas you can use a central office to manage more sparse users. Maximize cost.
(3) 10G GPON Technology has the advantage of QoS-guaranteed full service access. Operators must achieve triple play. In addition to data services, it also contains a large number of voice and video services. The service quality assurance requirements are relatively high, so the multi-service QOS guarantee will provide customers with high quality. Rich personal media experience.
(4）As a GPON upgrade, 10G GPON Technology runs on the currently deployed GPON network. Smooth upgrade from GPON to 10G GPON. Therefore, it has the advantage of cost and the feasibility of technology. And if WDM-PON is used. The old-fashioned ONU must be replaced. It requires a high cost. Therefore, 10G GPON can provide the right bandwidth at a lower cost.

4.Summary of 10G GPON Technology

10G GPON Technology as the next generation PON technology. It can meet the needs of the emerging high-bandwidth network application services, and achieve 10Gb/s bandwidth access at a lower cost. It is the development trend of next generation access network technology. This paper studies the key technologies of 10G GPON and proposes a new implementation scheme for the hybrid system of uplink and downlink symmetrical 10G GPON and GPON. It utilizes existing optical components. A gentle upgrade on the original basis yields an uplink rate of 10 Gb/s. It is also compatible with existing GPON systems for smooth evolution, so it has cost advantages and practicality. It provides a reference for 10G GPON Technology to become the access network. on the one hand. With GPON’s market share in the world exceeds EPON. It is hoped that next-generation PON technology will be compatible with deployed GPON: on the other hand. As the user broadband business continues to increase. It is believed that 10G GPON will become the mainstream of next-generation PON technology.