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Transmission method and process device of Ethernet service signal in wave division duplex network

A service signal and wavelength division multiplexing technology, which is applied in the direction of wavelength division multiplexing system, multiplexing communication, data exchange network, etc., can solve the problem of prolonging the transmission of real-time services, so as to improve the utilization rate of transmission bandwidth, Ease of management and maintenance, reduction of transmission costs

Inactive Publication Date: 2008-12-10
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0020] The present invention provides a transmission method and processing device for Ethernet service signals in a wavelength division multiplexing network, which realizes the multicasting of large-grain Ethernet service signals in a wavelength division multiplexing network by using space division crossover technology, and solves the problem of transmitting real-time services from time to time. extended question

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  • Transmission method and process device of Ethernet service signal in wave division duplex network
  • Transmission method and process device of Ethernet service signal in wave division duplex network
  • Transmission method and process device of Ethernet service signal in wave division duplex network

Examples

Experimental program
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Effect test

Embodiment 1

[0065] Embodiment 1. Realizing GE channel multicast in WDM network

[0066] Multicast of large-grained GE services is realized based on GE ADM (space division crossover) technology. Using this technology, GE services from the central source site are multicast to downstream edge sites through the GE pipeline provided by the WDM system. At the same time, based on GE The cross-connection realizes the downlink, replication, and continuous transmission of GE services to downstream sites.

[0067] The service sending side, such as image 3 As shown, at the source site, the service sent by the client side enters the WDM system through the physical layer interface. The GE service in Embodiment 1 only requires the multicast of the GE channel, so the MAC layer and the WDM network identification module do not need to process the service , in the GE ADM cross-connect module, using the cross-connect function, GE services can be output through the west optical interface or the east optical...

Embodiment 2

[0072] Embodiment 2: Realize service multicast in WDM network based on the MAC layer label carried by the service

[0073] MAC layer labels include VLAN labels, MPLS labels, or RPR labels. It is most convenient to use VLAN labels. The following uses VLAN labels as an example to describe in detail.

[0074] When the uplink services at the central source site include different VLAN tags in the GE services, in order to improve bandwidth utilization, the WDM network multicasts them to different downstream edge sites through shared channels based on the VLAN tags.

[0075] The functions implemented by the central source site in this embodiment are the same as those in Embodiment 1, and the specific implementation process is as follows Figure 4 As shown, the GE services coming from the source site are services with different VLAN tags. The selection of east-west services and the replication of services are the same as those in Embodiment 1. The difference is that the MAC layer of t...

Embodiment 3

[0078] Embodiment 3: Based on the self-defined identification of the WDM network, the multicast of services in the shared channel is realized

[0079] Also to improve bandwidth utilization, a set of identification information for each site and port can be customized in the WDM network to distinguish the Ethernet service signals sent to different sites at the same time through the shared Ethernet channel.

[0080] Such as Figure 8 As shown, 4 GEs come from the central source site and share a channel for transmission in the WDM system. These 4 GEs need to be multicast to different sites. At this time, the source site needs to control the bandwidth of the service based on VLAN at the MAC layer, and control the bandwidth of the WDM line within the predetermined capacity. Since multiple GEs share one or several channels, such as sharing a GE channel, then In order to distinguish the upstream services of different ports in this shared channel and the receiving site to distinguish ...

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Abstract

The present invention provides a method for transmitting Ethernet service signals in a Wavelength Division Multiplexing (WDM) network, comprising: a Center receiving Ethernet service signals and transmitting the signals to a transmission channel; a receiving station receives the Ethernet service signals, performs a space-division cross operation upon the received signals, duplicates the signals into two copies, wherein one is locally downloaded while the other is returned to the transmission channel. Three devices for processing the Ethernet service signals in the WDM network are provided. With the present invention, the broadcast of the Ethernet service signals with large granularity is implemented, therefore decreasing the delay for broadcast the real-time services; besides, it is not necessary anymore to construct a overlapped network with three layers of devices, i.e. a WDM system, a Synchronous Digital Hierarchy (SDH) system and a data device, so the network structure is simplified and management is convenient.

Description

technical field [0001] The invention relates to a wavelength division multiplexing network, in particular to a transmission method and a processing device for an Ethernet service signal in the wavelength division multiplexing network. Background technique [0002] With the development of IP technology and ADSL (Asymmetric Digital Subscriber Line, Asymmetric Digital Subscriber Line), FTTH (Fiber To The Home, Fiber To The Home), IPTV (Internet Protocol TV, Internet Network Television), NGN (Next generation network , next-generation network), 3G and other networks, operators can provide users with rich service experience, mainly including providing rich Internet browsing, online transactions, video downloads, IP voice, Video / Audio streaming, VoD ( Video on demand, video on demand), multimedia interaction and online games, etc.; video conferencing, distance education, VPN (Virtual Private Network, virtual private network), data line and IP Hotel, etc. provided for business users...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04J14/02
CPCH04J14/0227H04J14/0283H04L12/4641H04J14/0238H04J14/0249
Inventor 熊前进张建梅肖典军李唯实
Owner HUAWEI TECH CO LTD
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