下行導(dǎo)頻時(shí)隙

Downlink Pilot Time Slot(DwPTS)

TD-SCDMA的物理信道采用四層結(jié)構(gòu)：系統(tǒng)幀、無線幀、子幀和時(shí)隙/碼。其幀結(jié)構(gòu)將10ms的無線幀分成兩個(gè)5ms的子幀，每個(gè)子幀中有7個(gè)常規(guī)時(shí)隙和3個(gè)特殊時(shí)隙。三個(gè)特殊時(shí)隙分別為下行導(dǎo)頻時(shí)隙DwPTS、主保護(hù)時(shí)隙GP和上行導(dǎo)頻時(shí)隙UpPTS

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