Downlink Channel (UARFCN)

DL Channel

The DL Channel setting specifies the downlink UTRA Absolute RF Channel Number (UARFCN). This determines at what frequency the test set's RF generator will transmit the downlink signal.

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

Downlink Frequency and UARFCN, and DL 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 "DL Channel" Range
I (IMT-2000)	190	2112.4 - 2167.6, increment = 0.2	5 * (center freq in MHz)	10562 - 10838	10562 - 10838
II (U.S. PCS)	80	1932.4 - 1987.6, increment = 0.2	5 * (center freq in MHz)	9662 - 9938	9662 - 9938
		1932.5 - 1987.5, increment = 5	5 * ((center freq in MHz) - 1850.1 MHz)	412, 437, 462, 487, 512, 537, 562, 587, 612, 637, 662, 687	412, 437, 462, 487, 512, 537, 562, 587, 612, 637, 662, 687
III (DCS/PCS)	95	1807.4 - 1877.6, increment = 0.2	5 * ((center freq in MHz) - 1575 MHz)	1162 - 1513	1162 - 1513
IV	400	2112.4 - 2152.6, increment = 0.2	5 * ((center freq in MHz) - 1805 MHz)	1537 - 1738	1537 - 1738 *
		2112.5 - 2152.5, increment = 5	5 * ((center freq in MHz) - 1735.1 MHz)	1887, 1912, 1937, 1962, 1987, 2012, 2037, 2062, 2087	1887, 1912, 1937, 1962, 1987, 2012, 2037, 2062, 2087 *
V (US Cellular)	45	871.4 - 891.6, increment = 0.2	5 * (center freq in MHz)	4357 - 4458	4357 - 4458 #
		871.5, 872.5, 876.5, 877.5, 882.5, 887.5	5* ((center freq in MHz) - 670.1 MHz)	1007, 1012, 1032, 1037, 1062, 1087	1007, 1012, 1032, 1037, 1062, 1087 #
VI (Japan 800)	45	877.4 - 882.6, increment = 0.2	5 * (center freq in MHz)	4387 - 4413	4387 - 4413 +
		877.5, 882.5	5 * ((center freq in MHz) - 670.1 MHz)	1037, 1062	1037, 1062 +
VII	120	2622.4 - 2687.6, increment = 0.2	5 * ((center freq in MHz) - 2175 MHz)	2237 - 2563	2237 - 2563
		2622.5 - 2687.5, increment = 5	5 * ((center freq in MHz) - 2105.1 MHz)	2587, 2612, 2637, 2662, 2687, 2712, 2737, 2762, 2787, 2812, 2837, 2862, 2887, 2912	2587, 2612, 2637, 2662, 2687, 2712, 2737, 2762, 2787, 2812, 2837, 2862, 2887, 2912
VIII	45	927.4 - 957.6, increment = 0.2	5 * ((center freq in MHz) - 340 MHz)	2937 - 3088	2937 - 3088
IX	95	1847.4 - 1877.4, increment = 0.2	5 * (center freq in MHz)	9237 - 9387	9237 - 9387 *
X	400	2112.4 - 2167.6, increment = 0.2	5 * ((center freq in MHz) - 1490 MHz)	3112 - 3388	3112 - 3388 *
		2112.5 - 2167.5, increment = 5	5 * ((center freq in MHz) - 1430.1 MHz)	3412, 3437, 3462, 3487, 3512, 3537, 3562, 3587, 3612, 3637, 3662, 3687	3412, 3437, 3462, 3487, 3512, 3537, 3562, 3587, 3612, 3637, 3662, 3687 *
XI	48	1478.4 - 1498.4, increment = 0.2	5 * ((center freq in MHz) - 736 MHz)	3712 - 3787	3712 - 3787
XII	30	730.4 - 743.6, , increment = 0.2	5 * ((center freq in MHz) + 37 MHz)	3837 - 3903	3837 - 3903
		730.5, 731.5, 736.5, 737.5, 742.5, 743.5	5 * ((center freq in MHz) + 54.9 MHz)	3927, 3932, 3957, 3962, 3987, 3992	3927, 3932, 3957, 3962, 3987, 3992
XIII	31	748.4 - 753.6, , increment = 0.2	5 * ((center freq in MHz) + 55 MHz)	4017 - 4043	4017 - 4043
		748.5, 753.5	5 * ((center freq in MHz) + 64.9 MHz)	4067, 4092	4067, 4092
XIV	30	760.4 - 765.6, , increment = 0.2	5 * ((center freq in MHz) + 63 MHz)	4117 - 4143	4117 - 4143
		760.5, 765.5	5 * ((center freq in MHz) + 72.9 MHz)	4167, 4192	4167, 4192
XIX	45	877.4- 887.6	5 * ((center freq in MHz) - 735 MHz)	712 to 763	712 to 763
		877.5, 882.5, 887.5	5 * ((center freq in MHz) - 720.1 MHz)	787, 812, 837	787, 812, 837
XX	41	793.4 - 818.6	5 * ((center freq in MHz) + 109 MHz)	4512 to 4638	4512 to 4638
XXI	48	1498.4 - 1508.4	5 * ((center freq in MHz) - 1326 MHz)	862 to 912	862 to 912
# In order to ensure a Frequency Band Indicator of Band V is sent in SIB5 when DL Channel is set to any of these UARFCNs, set Frequency Band Indicator State to On and Band Arbitrator to Band V . + In order to ensure a Frequency Band Indicator of Band VI is sent in SIB5 when DL Channel is set to any of these UARFCNs, set Frequency Band Indicator State to On and Band Arbitrator to Band VI . * Ensure that the Transmit SIB5bis parameter is set accordingly for your UE.

When in FDD Test operating mode, the downlink frequency can also be set by setting RF Gen Freq Ctrl to Manual and then manually entering the RF Gen Freq .

To set the downlink channel number via GPIB command, see CALL:CHANnel .

Operating Considerations

• This setting cannot be changed while in active cell operating mode. Attempting to change this setting while in this mode results in an error and the test set rejects the change. Use the Cell Off operating mode when changing this setting. See CALL:OPERating to select operating modes.
• To hand over to a new downlink 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 DL UARFCN, the DL Channel setting is overwritten with the value of the handover downlink channel .
• If the DL Channel setting results in an UL/DL offset of less than 30 MHz when compared with the Uplink 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:CHANnel

Channel (UARFCN) Parameters

Channel (UARFCN) Information

Uplink Channel (UARFCN)

Handovers