Method and transmission equipment for transmitting client signal in optical transmission network
A client signal and optical transmission network technology, applied in the field of optical communication, can solve the problem of low utilization rate of optical fiber bandwidth, and achieve the effect of improving bandwidth transmission efficiency
Active Publication Date: 2019-06-11
HUAWEI TECH CO LTD
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[0005] Embodiments of the present invention provide a method for transmitting client signals in an optical transport network and optical transport network equipment, so as to solve the problem in the prior art that OTU adopts a fixed rate and the utilization rate of optical fiber bandwidth is not high
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[0057] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0058] figure 1 It is an OTN frame format diagram of an embodiment of the present invention. Such as figure 1 As shown, the OTN frame has a standard modular structure of 4080 columns × 4 rows. The 16 columns in the OTN frame header are overhead bytes, the 3808 columns in the middle are payload, and the 256 columns in the tail are FEC check bytes...
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The embodiment of the present invention discloses a method for transmitting client signals in an optical transport network and optical transport network equipment. The method includes: dividing the payload of the optical payload unit signal into m first granularity time slots, dividing the m first One of the first granularity time slots is divided into n second granularity time slots, wherein the rate of the first granularity time slot is n times the rate of the second granularity time slot, m is a positive integer, and n is greater than 1 is a positive integer, the first client signal is mapped to the payload of one or more second granularity time slots in the n second granularity time slots, and the overhead of the first granularity time slot is added to the optical payload unit signal and The overhead of the second granularity time slot generates an optical data unit signal and sends the optical data unit signal. By adopting the embodiment of the present invention, the bandwidth transmission efficiency is improved.
Description
technical field [0001] The invention relates to the technical field of optical communication, in particular to a method and transmission equipment for transmitting client signals in an optical transmission network. Background technique [0002] OTN (Optical Transport Network, Optical Transport Network) is the core technology of the transport network. OTN has rich OAM (Operation Administration and Maintenance, operation management and maintenance), powerful TCM (Tandem Connection Monitoring, tandem connection monitoring) capabilities and out-of-band FEC (Forward Error Correction, forward error correction) capability can realize flexible scheduling and management of large-capacity services. [0003] The OTN standard system defines four OTUs (Optical channel Transport Units) with fixed line rates, namely OTU1, OTU2, OTU3, and OTU4, and their line rates are 2.5G, 10G, 40G, and 100G. It is bit / s, that is, bits per second. The four OTUs respectively correspond to four ODUs (Opti...
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IPC IPC(8): H04J3/16H04Q11/00H04L47/43
CPCH04Q11/00H04J3/1652H04J3/14H04J2203/0057H04J2203/0089H04Q11/04
Inventor 苏伟
Owner HUAWEI TECH CO LTD