What is UMTS and its layers?

UMTS protocol stack consists of Access Stratum(AS) and Non Access Stratum(NAS) . Access Stratum supports OSI-layer 1 to 3. It consists of PHY(layer 1), MAC(layer 2),RLC(layer 2) and RRC(layer 3). NAS or core network part is divided based on circuit switched(CS) or packet switched(PS) functionalities.

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How do you calculate uplink frequency?

The actual frequencies (uplink and downlink) used inside the frequency range are determined by the ARFCN. … Frequency Bands. DCS 1800PCS 1900ARFCN512-885512-810Uplink (UL) Formula (MHz)FUL(n) = 1710.2 + 0.2*(n-512)FUL(n) = 1850.2 + .2*(n-512)Downlink (DL) Formula (MHz)FDL(n) = FUL(n)+95FDL(n) = FUL(n)+80Frequency Bands – Keysight RFMW Sitemap rfmw.em.keysight.com › rfcomms › refdocs › gsm › gen_bse_cell_band

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What are CDMA channels?

A CDMA channel is a pair of 1.25MHz frequency bands separated by guard-band . The guard-band may be 45 or 80MHz wide. The pair of 1.25MHz band is located either in the 82-893 MHz range in case of cellular CDMA or in the 1850-1989 MHz range in case of PCS CDMA.

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What is a CDMA band frequency?

CDMA 850 is CDMA technology operating in the Cellular (850 MHz ) frequency band. Before the existence of GSM 850, the Cellular band was often referred to as the “800 MHz” band. “850 MHz” implies a different frequency band, but the two are often used interchangeably.

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