Evolved Universal Terrestrial Radio Access Network is the radio technology used between mobile terminals and the base stations of 3GPPTM systems is generically known as 'Universal Terrestrial Radio Access' (UTRA) and the access network as 'Universal Terrestrial Radio Access Network' (UTRAN). E-UTRA is a radio access network (RAN) which is referred to under the name EUTRAN standard meant to be a replacement of the UMTS and HSDPA/HSUPA technologies specified in 3GPP releases 5 and beyond. Unlike HSPA, LTE's E-UTRA is an entirely new air interface system, unrelated to and incompatible with W-CDMA. It provides higher data rates, lower latency and is optimized for packet data.

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