According to the embodiments of the present invention, in {TAIL ~ a system} to which {HEAD ~ the E UTRA} is applied, a base station apparatus, a user apparatus, and a method of allocating a reference signal sequence are provided that make it possible to reduce sequence collision among cells without increasing signaling reported by the base station apparatus 
According to the embodiments of the present invention , in { TAIL ~ a system } to which { HEAD ~ the E UTRA } is applied , a base station apparatus , a user apparatus , and a method of allocating a reference signal sequence are provided that make it possible to reduce sequence collision among cells without increasing signaling reported by the base station apparatus
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