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Coding/decoding methods and devices

An encoding block and decoding technology, applied in the field of encoding/decoding, can solve the problems of complex mapping process and low efficiency

Active Publication Date: 2012-12-19
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The present invention provides a method and device for mapping 8B / 10B coded signals to an optical transmission network for transmission, to solve the problem of complex mapping process and low efficiency when mapping 8B / 10B coded signals to an optical transmission network in the prior art

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  • Coding/decoding methods and devices
  • Coding/decoding methods and devices
  • Coding/decoding methods and devices

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Embodiment 1

[0100] Embodiment 1, the 8B / 10B encoded signal in the Gigabit Ethernet GE of 1.25Gbps is mapped to OTN for transmission, and in the present embodiment, the set number of bits of the bit synchronization frame header is 2, that is, the formula (2 ), M=2. see Figure 5 :

[0101] Step 501: Determine the OPUk carrying the 8B / 10B coded signal with a rate of 1.25Gbps.

[0102] The rate of OPU0 is 1.23895431Gbps, which is slightly lower than 1.25Gbps. Therefore, the OPUk carrying the coded signal is OPU0.

[0103] Step 502: according to the rate of the 8B / 10B coded signal of access, the rate of OPUk, and the setting number of bits of the bit synchronization frame header determine the number of service codes forming the coded block, i.e. the value of N in formula (2).

[0104] Here, V=1.25Gbps, V k =1.23895431Gbps, M=2, therefore, according to N ≥ MV 10 V k ...

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Abstract

A transmitting method and apparatus for mapping 8B / 10B encoding signal to an optical transport network (OTN) are disclosed, which are to solve the problems of the complexity and low efficiency of mapping process when 8B / 10B encoding signals are mapped to an OTN in the prior art. The method comprises: determining the optical payload unit OPUk of 8B / 10B encoding signals accessed by a bearer according to the rate of 8B / 10B encoding signals and that of the different levels of the OPUk in the OTN; transforming the 8B / 10B encoding signals into certain encoding signals according to the rates of 8B / 10B encoding signals and the OPUk; and mapping the certain encoding signals to the OPUk for transportion, wherein, the certain encoding signals are composed of encoding blocks with regulated length, each encoding block includes bit synchronization frame header information, and the rate of the certain encoding signal is not higher than that of the OPUk.

Description

technical field [0001] The present invention relates to the field of optical transport network (Optical Transport Network, OTN) technology, in particular to an encoding / decoding method and device. Background technique [0002] With the development of communication systems, OTN has gradually become the mainstream technology in the field of optical communication, especially the development of OTN-based cross-scheduling technology, which makes OTN gradually develop into a multi-service bearer platform. [0003] The characteristics of various access OTN service signals are different, but the OTN payload rate is fixed, which makes different service signals have different mapping paths and methods when they are mapped to the OTN payload. [0004] Wherein, the OTN payload is also called an optical payload unit k (Optical payload unit k, OPUk) (k=0, 1, 2, 2e, 3, 4), and k represents a different rate level. The OPU type and rate corresponding to OPUk are shown in Table 1: [0005] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04J3/06H04Q11/00
CPCH04J3/1652H04Q2213/1301H04J3/0602H04L25/49
Inventor 彭肖宋晓鹏
Owner ZTE CORP