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Optical subscriber communication system, optical subscriber communication method, host device and optical subscriber line terminal device

A technology for subscriber lines and terminal devices, which is applied to the selection device of multiplexing systems, time-division optical multiplexing systems, transmission systems, etc., and can solve problems such as inability to apply PON systems

Active Publication Date: 2018-01-02
NIPPON TELEGRAPH & TELEPHONE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the current PON system cannot be applied to the optical extension base station mode

Method used

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  • Optical subscriber communication system, optical subscriber communication method, host device and optical subscriber line terminal device
  • Optical subscriber communication system, optical subscriber communication method, host device and optical subscriber line terminal device
  • Optical subscriber communication system, optical subscriber communication method, host device and optical subscriber line terminal device

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no. 2 Embodiment approach

[0140] Figure 1-7 The configuration of the optical subscriber communication system according to the second embodiment of the first invention is shown. In the first embodiment of the first invention, the OLT 2 creates bandwidth allocation information for the entire PON section, and in the second embodiment of the first invention, the host device 1 creates bandwidth allocation information for the entire PON section. Thus, the second embodiment of the first invention has the same constituent elements as the first embodiment of the first invention, but the processing allocation is different, and the communication traffic between the host device 1 and the OLT 2 increases by the bandwidth allocation information of the entire PON section. However, the processing capacity of the filtering unit 21 and the bandwidth control processing unit 22 of the OLT2 is reduced and sent to the copying part of the Gate data packet of each ONU4 and the creation part of the bandwidth allocation inform...

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Abstract

A communication system and method comprising a higher-network apparatus and a lower-network apparatus connected through a PON system, which transfers uplink data from the lower-network apparatus to the higher-network apparatus at high speed so as to meet severe conditions required for a delay time between the higher-network apparatus and the lower-network apparatus. The method including a scheduling execution process in which a higher-network apparatus performs scheduling for uplink communication from each of the lower-network apparatus to the device itself and an uplink data transmission permission process in which the higher-network apparatus calculates a transmission time and a transmission permission amount of uplink data transmitted from an ONU to OLT based on the scheduling for uplink communication and notifies the OLT.

Description

technical field [0001] The present invention relates to a technique for high-speed transmission of uplink data from a lower device to a higher device in a communication system composed of a higher device and a lower device connected through an optical subscriber system (PON: Passive Optical Network). Background technique [0002] The economical efficiency of the optical user system using the passive double-star structure is high, so the GE-PON system and the G-PON system are widely promoted in the world, and the high-speed 10G-EPON system and the XG-PON system are also constantly being developed. Research. [0003] Picture 1-1 and diagram 2-1 The structure of the conventional optical subscriber communication system is shown. The optical subscriber communication system includes: a host device 1, an optical subscriber line terminal unit (OLT: Optical Line Terminal) 2, an optical fiber section 3 composed of an optical fiber 3F and an optical coupler 3C, and an optical subsc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/44
CPCH04B10/27H04L12/2861H04Q11/0067H04Q2011/0064H04B10/25752H04J14/08
Inventor 桑野茂寺田纯饭山法子坂本健田中伸幸重松智志
Owner NIPPON TELEGRAPH & TELEPHONE CORP
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