Method for saving energy of broadband access network

Abstract

The invention discloses a method for saving energy of a broadband access network. The method comprises the steps that a reporting frame sent by each ONU is received by an OLT, whether each ONU is in the deep dormant mode or the common dormant mode is judged according to the size of a downlink cache and a bandwidth request value of priority services in each reporting frame. In terms of the ONUs in the common dormant mode, uplink bandwidth is allocated to each priority service of each ONU and parameters of uplink data and parameter of downlink data are set; the ONUs are arranged in a descending order by the OLT according to uplink bandwidth allocation values of the ONUs, authorization frames are generated for the ONUs and sent, and then the downlink data are sent. After the ONUs in the common dormant mode receive GATE frames, the uplink data and new reporting frames are started to be sent and the downlink data are received according to the receiving starting time of the downlink data; the ONUs in the deep dormant mode only send the uplink data and receive the downlink data and do not send the new reporting frames and dormancy awakening time is set by each ONU according to the dormant mode. According to the method for saving the energy of the broadband access network, the energy is saved through the method that unnecessary work time of a sender and a receiver of each ONU is shortened.

Description

technical field [0001] The invention belongs to the technical field of broadband access networks, and more specifically relates to an energy-saving method for broadband access networks. Background technique [0002] The OFDM-PON technology that combines OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) and PON (Passive Optical Network, Passive Optical Network) is the mainstream technology for next-generation optical networks. OFDM-PON is located between the service network interface (Service Network Interface, SNI) and the user network interface (User Network Interface, UNI), which is mainly composed of three parts: optical line terminal (Optical Line Terminal, OLT), optical network unit ( Optical Network Unit, ONU) and Optical Distribution Network (Optical Distribution Network, ODN). For the OFDM-PON network, some domestic and foreign research institutions have done a lot of work, such as NEC company Wei W and others first propos...

AI Technical Summary

Problems solved by technology

[0010] However, none of the above algorithms can well adapt to the characteristics of OFDM-PON, such as small bandwidth granularity and multiple carriers, and more importantly, it cannot achieve a certain energy-saving effect. It is imperative to implement a green bandwidth allocation algorithm that is equipped with an OFDM-PON system and can meet the requirements of multi-service access quality of service (QoS, Quality of Service)

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