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Communication method and device

A communication method and time information technology, applied in the field of communication, can solve the problems of high computational overhead and high complexity in parsing PON data frames, and achieve the effects of meeting time synchronization requirements, reducing complexity, and reducing occupancy

Pending Publication Date: 2022-08-05
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] However, because the time information appears in different positions in different PON data frames, the complexity of the process of ONU obtaining time information is high, and the calculation overhead of parsing PON data frames is relatively large.

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  • Communication method and device

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Embodiment Construction

[0090] In order to make the principles and technical solutions of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0091] figure 1 This is a schematic diagram of an application scenario involved in a communication method provided by an embodiment of the present application. like figure 1 As shown, in this application scenario, the communication system can be applied to various types of PONs. For example, the communication system can be applied to an Ethernet Passive Optical Network (Ethernet Passive Optical Network, EPON). Such as 10G EPON, single-wave 25G EPON, 2ⅹ 25GEPON, single-wave 50G EPON, 2ⅹ 50G EPON or 100G EPON, etc. For another example, the communication system may be applied to a Gigabit Passive Optical Network (Gigabit Passive Optical Network, GPON). Such as GPON, XGPON, XGSPON or TWDMPON, etc.

[0092] The communication system includes: an OLT10...

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Abstract

The invention discloses a communication method and equipment, and belongs to the field of communication. The method comprises: generating a passive optical network (PON) data frame, the PON data frame comprising: an overhead area, the overhead area comprising at least part of a first timestamp, the first timestamp being used for time synchronization; and sending the PON data frame. According to the invention, the operation overhead for analyzing the PON data frame can be reduced. The method and the device are used for time synchronization of the OLT and the ONU.

Description

technical field [0001] The present application relates to the field of communication, and in particular, to a communication method and device. Background technique [0002] Passive Optical Network (PON), also known as passive optical network, is an optical distribution network mainly composed of passive devices. A PON includes an optical line terminal (OLT) and an optical network unit (Optical Network Unit, ONU). The OLT and ONU need to maintain time synchronization to achieve efficient data transmission. [0003] At present, the OLT generates a PON data frame, and carries time information in the payload area of ​​the PON data frame, and the time information is used to indicate the sending moment of a certain target PON data frame to be sent in the future; the ONU receives the PON data after receiving the PON data frame. After the frame, after the target PON data frame is subsequently received, the time indicated by the time information and the sum of the transmission time...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/06H04Q11/00
CPCH04J3/0667H04Q11/0062H04Q11/0067H04Q2011/0064H04J3/1694H04J3/0661H04J14/0227
Inventor 薛建林吕京飞吴徐明
Owner HUAWEI TECH CO LTD
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