Internet Draft Authors: XiaoDong LEE
HSU NAI-WEN
Nov 16th, 2001 Deng Xiang
Expires in six months Erin Chen
Zhang Hong
Sun Guonian
Traditional and Simplified Chinese Conversion
Status of this Memo
This document is an Internet-Draft and is in full conformance with all provisions of Section 10 of RFC2026.
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Terminology
The key words "MUST", "SHALL", "REQUIRED", "SHOULD", "RECOMMENDED", and "MAY" in this document are to be interpreted as described in RFC 2119[9].
Preface
This article revise TSCONV-00 to give more detail about: 1. User requirements for TC/SC conversion of Chinese Domain Name. 2. Implementation of TC/SC conversion of Chinese Domain Name with AMC-ACE-Z extension.3. Updated 1-1 TC/SC conversion table (1-1 Chinese variant table), which should be confirmed by CJK folks.[Editor's note: As Han ideography's in common use by CJK people, so such table may be modified after making consensus with language experts of CJK area.]
To emphasis firstly, TC/SC conversion is just a fixed glossary for Chinese, it doesn't mean "mapping TC to SC or mapping SC to TC unilaterally" but "matching in comparison of DNS system". Please refer to section 1 for more.
This article describes the history, actual status of Chinese characters. Especially, it expatiates on the connotation and foundation of Chinese domain name TC/SC conversion in the domain name system, it defines the CDN user requirements based on the culture, custom and habit of Chinese users, so that users around the world who use Chinese Domain Name can get consistent results.
Since the domain name itself is unique with certain ideographic functions, it is associated with intellectual property rights. Internationalized domain name will extend its ideographic scope into different languages and characters. Therefore it has an obvious mark of intellectual property rights. As an internationalized domain name protocol, how to reduce 2^n combination that user have to register to protect the intellectual property rights of Chinese domain name in deed is very important.
This article discusses the AMC-ACE-Z extension that can mostly achieve the TC/SC conversion of Chinese domain name (from Traditional Chinese(TC) character to Simplified Chinese(SC) character or from SC to TC) in DNS. This method will not affect the distribution of Unicode code point, and will not influence other related process defined by IDNA and Nameprep. It only extends the AMC-ACE-Z's algorithm. On one hand the characteristic of TC and SC are maintained, and on the other hand, TC, SC, or TC/SC mixed domain names should match each other when comparing in DNS. This method supports the consistent resolving and display of all Traditional Chinese, all Simplified Chinese or mixed ones.
TC/SC conversion is a complex problem, but most of them are 1-1 conversion that is content insensitive. In this draft, we mainly propose the solution for that. Some of the one to one conversion (1-1), which is confirmed by CJK folks, can be implemented by the AMC-ACE-Z Extension, while the rest can be solved in other solutions, which are not in the scope of this draft. The amount of 1-1 TC/SC characters are large (more than 2,000 pairs), most of which are used commonly, so they appear in the domain names frequently (about 83.6%, just 1-1 TC/SC, 500,000 samples). We hope this article could help readers to understand the necessity and significance of TC/SC conversion in DNS.
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