Uplink Channel (UARFCN)

Uplink Channel

The Uplink Channel setting specifies the uplink UTRA Absolute RF Channel Number (UARFCN). This automatically sets the test set's receivers to the expected UE transmit frequency.

The relationship between UARFCN and uplink frequency is described in 3GPP TS 25.101 section 5.

Uplink Frequency and UARFCN, and Uplink Channel Range

Band	TS 25.101 DL to UL Frequency Separation (MHz)	TS 25.101 Center Frequency Range (MHz)	TS 25.101 UARFCN Equation	TS 25.101 UARFCN Range	Test Set "Uplink Channel" Range
I (IMT-2000)	190	1922.4 - 1977.6, increment = 0.2	5 * (center freq in MHz)	9612 - 9888	9612 - 9888
II (U.S. PCS)	80	1852.4 - 1907.6, increment = 0.2	5 * (center freq in MHz)	9262 - 9538	9262 - 9538
		1852.5 - 1907.5, increment = 5	5 * ((center freq in MHz) - 1850.1 MHz)	12, 37, 62, 87, 112, 137, 162, 187, 212, 237, 262, 287	12, 37, 62, 87, 112, 137, 162, 187, 212, 237, 262, 287
III (DCS/PCS)	95	1712.4 - 1782.6, increment = 0.2	5 * ((center freq in MHz) - 1525 MHz)	937 - 1288	937 - 1288
IV	400	1712.4 - 1752.6, increment = 0.2	5 * ((center freq in MHz) - 1450 MHz)	1312 - 1513	1312 - 1513
		1712.5 - 1752.5, increment = 5	5 * ((center freq in MHz) - 1380.1 MHz)	1662, 1687, 1712, 1737, 1762, 1787, 1812, 1837, 1862	1662, 1687, 1712, 1737, 1762, 1787, 1812, 1837, 1862
V (US Cellular)	45	826.4 - 846.6, increment = 0.2	5 * (center freq in MHz)	4132 - 4233	4132 - 4233
		826.5, 827.5, 831.5, 832.5, 837.5, 842.5	5* ((center freq in MHz) - 670.1 MHz)	782, 787, 807, 812, 837, 862	782, 787, 807, 812, 837, 862
VI (Japan 800)	45	832.4 - 837.6, increment = 0.2	5 * (center freq in MHz)	4162 - 4188	4162 - 4188
		832.5, 837.5	5 * ((center freq in MHz) - 670.1 MHz)	812, 837	812, 837
VII	120	2502.4 - 2567.6, increment = 0.2	5 * ((center freq in MHz) - 2100 MHz)	2012 - 2338	2012 - 2338
		2502.5 - 2567.5, increment = 5	5 * ((center freq in MHz) - 2030.1 MHz)	2362, 2387, 2412, 2437, 2462, 2487, 2512, 2537, 2562, 2587, 2612, 2637, 2662, 2687	2362, 2387, 2412, 2437, 2462, 2487, 2512, 2537, 2562, 2587, 2612, 2637, 2662, 2687
VIII	45	882.4 - 912.6	5 * ((center freq in MHz) - 340 MHz)	2712 - 2863	2712 - 2863
IX	95	1752.4 - 1782.4, increment = 0.2	5 * (center freq in MHz)	8762 - 8912	8762 - 8912
X	400	1712.4 - 1767.6, increment = 0.2	5 * ((center freq in MHz) - 1135 MHz)	2887 - 3163	2887 - 3163
		1712.5-1767.5, increment = 5	5 * ((center freq in MHz) - 1075.1 MHz)	3187, 3212, 3237, 3262, 3287, 3312, 3337, 3362, 3387, 3412, 3437, 3462	3187, 3212, 3237, 3262, 3287, 3312, 3337, 3362, 3387, 3412, 3437, 3462
XI	48	1430.4 - 1450.4, increment = 0.2	5 * ((center freq in MHz) - 733 MHz)	3487 - 3562	3487 - 3562
XII	30	700.4 - 713.6, increment = 0.2	5 * ((center freq in MHz) + 22 MHz)	3612 - 3678	3612 - 3678
		700.5, 701.5, 706.5, 707.5, 712.5, 713.5	5 * ((center freq in MHz) + 39.9 MHz)	3702, 3707, 3732, 3737, 3762, 3767	3702, 3707, 3732, 3737, 3762, 3767
XIII	31	779.4 - 784.6, increment = 0.2	5 * ((center freq in MHz) - 21 MHz)	3792 - 3818	3792 - 3818
		779.5, 784.5	5 * ((center freq in MHz) - 11.1 MHz)	3842, 3867	3842, 3867
XIV	30	790.4 - 795.6, increment = 0.2	5 * ((center freq in MHz) - 12 MHz)	3892 - 3918	3892 - 3918
		790.5, 795.5	5 * ((center freq in MHz) - 2.1 MHz)	3942, 3967	3942, 3967
XIX	45	832.4 - 842.6	5 * ((center freq in MHz) - 770 MHz)	312 - 363	312 - 363
		832.5, 837.5, 842.5	5 * ((center freq in MHz) - 755.1 MHz)	387, 412, 437	387, 412, 437
XX	41	834.4 - 859.6	5 * ((center freq in MHz) + 23 MHz)	4287 - 4413	4287 - 4413
XXI	48	1450.4 - 1460.4	5 * ((center freq in MHz) - 1358 MHz)	462 - 512	462 - 512

You can specify the uplink UARFCN in one of two ways:

• Uplink Channel

  Directly set the Uplink Channel setting to a specific uplink UARFCN value.

  GPIB commands: CALL:UPLink:CHANnel[:MCHannel]

• Automatically Determined by DL Channel Setting

  When Uplink Channel is set to Auto , the uplink UARFCN is automatically determined by the DL Channel setting (the test set subtracts the frequency separation associated with the DL Channel 's band from the DL Channel setting).

  GPIB command: CALL:UPLink:CHANnel:CONTrol:AUTO

To query the current uplink channel number via GPIB command, see CALL:STATus:UPLink:CHANnel? . Current Info, UL: Channel and Frequency is also displayed on the Channel (UARFCN) Information screen.

When in FDD Test operating mode, the expected uplink frequency can also be set by manually entering the Uplink Frequency (see Receiver Control ).

Operating Considerations

• These settings cannot be changed while in active cell operating mode. Attempting to change these settings while in this mode results in an error and the test set rejects the change. Use the Cell Off operating mode when changing these settings. See CALL:OPERating to select operating modes.
• To hand over to a new uplink channel while on a connection, you must perform a Physical Channel Reconfiguration , Transport Channel Reconfiguration or Radio Bearer Reconfiguration . After successful completion of a handover to a new UL UARFCN, the Uplink Channel setting is overwritten with the value of the handover uplink channel .
• If the Uplink Channel setting results in an UL/DL offset of less than 30 MHz when compared with the DL Channel setting, the warning message "Performance not specified for UL/DL frequency offset <30 MHz" is issued.

Related Topics

Manual Operation: Setting Call Parameters that Can Only Be Changed in Cell Off Mode

CALL:UPLink:CHANnel[:MCHannel]

CALL:STATus:UPLink:CHANnel?

Channel (UARFCN) Parameters

Channel (UARFCN) Information

Downlink Channel (UARFCN)

Handovers