Method for enhancing Quality of Service (QoS) of uplink business in hybrid passive optical network

A passive optical network and business service technology, which is applied in the direction of data switching network, multiplexing system selection device, digital transmission system, etc., can solve the problems such as inability to guarantee QoS, inability to guarantee the upper limit of delay, etc., so as to improve the uplink business QoS, the effect of improving the quality of service
CN102045606BActive Publication Date: 2013-11-20WUHAN POST & TELECOMM RES INST CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
WUHAN POST & TELECOMM RES INST CO LTD
Publication Date
2013-11-20

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Abstract

The invention relates to a method for enhancing Quality of Service (QoS) of uplink business in a hybrid passive optical network, which comprises the following steps: a. when generating a new uplink data stream, an optical network unit (ONU) of a hybrid passive optical network (HPON) firstly reports the characteristic of the data stream to an optical link terminal (OLT) through control information; b. the OLT judges the newcoming data stream according to a preset admission control algorithm, wherein if the remaining uplink bandwidth of the system is sufficient, the data stream is admitted, and else, the data stream is refused; c. the OLT calculates the transmission time allocated to each ONU according to the admitted data stream parameters in each period, which means that the ONU can continuously transmit the data time to the OLT and inform the corresponding ONU through the control information; and d. after acquiring the right of control, the ONU transmits the uplink data according to the time allocated by the OLT. The method can be used for acquiring determined QoS in an HPON system capable of sharing uplink wavelength, so that the HPON system can better support real-time services.
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Description

technical field

[0001] The present invention relates to the technical field of passive optical network (PON), and specifically relates to a method for improving service quality (QoS) of uplink business in wavelength division time division hybrid passive optical network (WDM-TDM HPON). Background technique

[0002] With the increasing maturity of optical fiber communication technology, the cost of optical fiber and optical devices has dropped sharply, and the passive optical network (PON) based on optical fiber has attracted more and more attention. The basic structure of PON is as follows figure 1 As shown, it includes an optical line terminal (OLT) located at the central office (Central Office), multiple optical network units (ONU) located at the user side, and an optical distribution network (ODN) used to connect the OLT and the ONU. ODN generally only includes passive equipment, which is used to distribute the data sent by OLT to each ONU. It can be an optical coupler or...

Claims

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