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Method and system for transmitting time division multiplex service

A time-division multiplexing and service technology, applied in the field of transmission, can solve problems such as uplink TDM service interruption, achieve the effect of eliminating service interruption and realizing lossless transmission

Active Publication Date: 2006-11-08
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for transmitting time-division multiplexing services to solve the problem of interruption of uplink TDM services caused by temporary interruption of transmission between OLT and ONU / ONT in the uplink direction caused by ranging

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  • Method and system for transmitting time division multiplex service
  • Method and system for transmitting time division multiplex service
  • Method and system for transmitting time division multiplex service

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Embodiment Construction

[0025] The present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the present invention is not limited to the following

[0026] Example.

[0027] like image 3 As shown, the system provided by the present invention includes an OLT, an ODU and an optical signal transceiver unit, which are connected by optical fibers. In this embodiment, the optical signal transceiving unit may be an ONU or an ONT. ONU and ONT are different names for the same module in different systems. The ONU / ONT includes an ingress buffer (BUF), a GEM (GPON Encapsulation Mode, GPON encapsulation module) and a GTC (G-PONTC layer, GPON TC sublayer), and the OLT includes an egress buffer (BUF), GEM and GTC. The ingress buffer, as the first buffer, can also be set outside the ONU / ONT without being a part of it; the egress buffer, as the second buffer, can also be set outside the OLT without being a part of it .

[0028] The ingress buffer a...

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Abstract

This invention relates to a method and a system for transmitting TDM service realized based on bit G passive optical network including buffer-storing up-TDM service data in a first buffer-storage when the GPON system is ranging and carrying the TDM service data in the first storage to a second buffer-storage after the ranging is finished to read out the TDM data in the second storage, which can solve the problem of interruption of the up-TDM service resulted in temporary interruption of transmission between the up-directin optical circuit terminal and the optical signal T-R unit due to the ranging to realize lossless transmission when TDM service ranges on the up direction of the GPON system.

Description

technical field [0001] The present invention relates to the transmission technology in the field of optical communication, in particular to a method and system for transmitting time division multiplexing services. Background technique [0002] like Figure 1A and 1B As shown, GPON (Gbit Passive Optical Network, Gbit Passive Optical Network) consists of three parts: OLT (Optical Line Terminal, optical line terminal); ODU (Optical Distribution Network, optical branch network); ONU (Optical Network) Unit, optical network unit) or ONT (Optical Network Terminals, optical network terminal). Figure 1A and 1B The middle ODU is a passive optical splitter, which belongs to a pure optical module and does not involve the processing of electrical signals. The OLT is the central office module, and the ONU / ONT is the user side module. OLT->ONU / ONT is the downstream direction, and ONU / ONT->OLT is the upstream direction. like Figure 1A As shown, the downlink signal is in a continuou...

Claims

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Application Information

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IPC IPC(8): H04J3/16
CPCH04J3/0682H04J3/1694
Inventor 熊焰赵峻王万万
Owner HUAWEI TECH CO LTD
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