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Encapsulation of digital communications traffic for transmission on an optical link

A technology of digital communication and optical link, applied in the field of communication network transmitter, communication network base station node and communication network base station, communication network receiver

Active Publication Date: 2017-02-22
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

OTN tributaries such as Ethernet usually do not have strict latency requirements, so OTN nodes and networks normally do not meet the strict latency specifications required by CPRI

Method used

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  • Encapsulation of digital communications traffic for transmission on an optical link
  • Encapsulation of digital communications traffic for transmission on an optical link
  • Encapsulation of digital communications traffic for transmission on an optical link

Examples

Experimental program
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Embodiment Construction

[0145] refer to figure 1 , the first embodiment of the present invention provides a method 10 for encapsulating digital communication services for transmission over an optical link.

[0146] Method 10 includes the following steps:

[0147] a. receiving an incoming digital communication signal 12 with an incoming line code;

[0148] b. Perform clock and data recovery on the incoming digital communication signal to obtain incoming line-coded digital communication traffic and recovered clock signal 14;

[0149]c. decoding said incoming digital traffic to obtain information bits and non-information bits 16;

[0150] d. removing said non-information bits 18;

[0151] e. Increase service channel bits for monitoring or maintenance 20;

[0152] f. Assembling the service channel bits and information bits into a frame 22; and

[0153] g. Line-encode the assembled frame using an output line code to form an encapsulated digital communication signal for transmission over an optical li...

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PUM

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Abstract

A method (10) of encapsulating digital communications traffic for transmission on an optical link, the method comprising: a. receiving an input digital communications signal having an input line code (12); b. performing clock and data recovery on the input digital communications signal to obtain input line coded digital communications traffic and a recovered clock signal (14); c. decoding the input digital communications traffic to obtain information bits and non- information bits (16); d. removing the non-information bits (18); e. adding service channel bits for monitoring or maintenance (20); f. assembling the service channel bits and information bits into frames (22); and g. line coding the assembled frames using an output line code to form an encapsulated digital communications signal for transmission on an optical link (24), wherein steps c. to g. are performed using the timing of the recovered clock signal. A communications network receiver configured to implement the method is also provided.

Description

technical field [0001] The present invention relates to a method of encapsulating digital communication traffic for transmission over an optical link and to a communication network transmitter. The invention further relates to a method of converting encapsulated digital communication traffic for transmission over a digital communication link and a communication network receiver. The invention further relates to a communication network base station node and a communication network base station. Background technique [0002] Common Public Radio Interface (CPRI) transport over optical networks is gaining traction among operators, who see it for real estate consolidation and fiber cost savings to rely on and in the longer term for enabling crossover from radio Opportunities for aggregation and backhaul of fronthaul to fixed and mobile access networks. [0003] The transmission technology for optical transport network OTN has been standardized in ITU-T Recommendation G.709 and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W88/08H04J3/06H04L1/00H04L25/49H04J3/16
CPCH04J3/0691H04J3/0688H04L1/0009H04L25/49H04L25/4908H04L1/0047H04J3/1652H04L1/0071H04B10/516H04L1/0041
Inventor S.斯特拉卡F.卡瓦列雷
Owner TELEFON AB LM ERICSSON (PUBL)
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