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UMTS-TDD
UMTS-TDD is a mobile data network standard built upon the UMTS 3G cellular mobile phone standard, using a TD-CDMA, TD-SCDMA, or other 3GPP-approved, air interface that uses Time Division Duplexing to duplex spectrum between the up-link and down-link. While a full mobile UMTS implementation, it is mainly used to provide Internet access in circumstances similar to those where WiMAX might be used.
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