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TDM-PON mobile forward transmission optical network data transmission method and device based on frame preemption

A TDM-PON, network data transmission technology, which is applied to the selection device, selection device, electrical components and other directions of the multiplexing system, which can solve the problems of long queuing delay of data frames and inability to meet the delay requirements of 5G bearer services. , to achieve the effect of reducing the queuing delay

Inactive Publication Date: 2020-03-27
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

However, TDM-PON uses time division multiplexing to support uplink and downlink data transmission of multiple ONUs (Optical Network Units) on one wavelength channel. Therefore, data frames must be sent in the sending window allocated by the OLT, which may cause data frame Experience a long queuing delay, including the delay of other ONUs sending data frames and the delay of sending other frames from the ONU where this data frame is located, so it cannot meet the delay requirements of 5G bearer services

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  • TDM-PON mobile forward transmission optical network data transmission method and device based on frame preemption
  • TDM-PON mobile forward transmission optical network data transmission method and device based on frame preemption
  • TDM-PON mobile forward transmission optical network data transmission method and device based on frame preemption

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Embodiment Construction

[0044] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0045] see figure 1 , is a schematic flowchart of a frame preemption-based TDM-PON mobile fronthaul optical network data transmission method provided by an embodiment of the present invention. The method is applied to an optical network unit ONU, and the method includes:

[0046] 101. Send the first Ethernet frame to the optical line terminal OLT.

[0047] In the embodiment of the present invention, the first Ethernet frame is an Ethernet frame sent from the RU to the ONU. Specifically, before step 101, that is, before sending the first Ethernet frame to the optical line terminal OLT, it also includes: obtaining the first Ethernet frame sent by the remote unit RU in the first polling period, and buffering it in In the q...

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Abstract

The invention discloses a TDM-PON (Time Division Multiplexing-Passive Optical Network) mobile fronthaul optical network data transmission method and a device based on frame preemption. The method is applied to an optical network unit (ONU), and comprises the following steps: sending a first Ethernet frame to an optical line terminal (OLT); receiving a second Ethernet frame sent by an optical network unit RU, wherein the second Ethernet frame reaches the ONU in the sending process of the current first Ethernet frame; detecting whether the priority of the second Ethernet frame is higher than that of the current first Ethernet frame; if yes, detecting whether the current first Ethernet frame meets an interrupt condition; and if yes, interrupting the sending of the current first Ethernet frame, and sending the second Ethernet frame to the OLT, thereby reducing the queuing delay of the delay-sensitive service.

Description

technical field [0001] The present invention relates to the technical field of mobile communication networks, in particular to a TDM-PON mobile fronthaul optical network data transmission method and device based on frame preemption. Background technique [0002] Radio over Ethernet (RoE) carries radio frequency signals (Radio over Ethernet, RoE) that uses Ethernet to encapsulate and frame wireless data. Ethernet-based time-division multiplexing passive optical network (TDM-PON) adopts RoE technology and combines the advantages of Ethernet and passive optical network. and industry concerns. However, since the mobile fronthaul network has extremely high latency requirements for data transmission, low-latency regulation will be a key issue for TDM-PON-carried mobile fronthaul networks. [0003] 5G carries a wide variety of services with different service characteristics and different delay requirements. Among the three typical business scenarios defined by 5G, the highly rel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q11/00
CPCH04Q11/0062H04Q11/0067
Inventor 张佳玮纪越峰张东宇
Owner BEIJING UNIV OF POSTS & TELECOMM
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