5 Operating bands and channel arrangement

36.1083GPPEvolved Universal Terrestrial Radio Access (E-UTRA)Release 18Satellite Access Node radio transmission and receptionTS

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

5.1 General

The channel arrangements presented in this clause are based on the operating bands and channel bandwidths defined in the present release of specifications.

NOTE: Other operating bands and channel bandwidths may be considered in future releases.

5.2 Operating bands

EUTRA SAN is designed to operate in the operating bands defined in Table 5.2-1.

Table 5.2-1 E-UTRA operating bands for satellite access

E‑UTRA Operating Band	Uplink (UL) operating band BS receive UE transmit			Downlink (DL) operating band BS transmit UE receive			Duplex Mode
	F_{UL_low} – F_{UL_high}			F_{DL_low} – F_{DL_high}
256	1980 MHz	–	2010 MHz	2170 MHz	–	2200 MHz	FDD
255	1626.5 MHz	–	1660.5 MHz	1525 MHz	–	1559 MHz	FDD
NOTE: Satellite bands are numbered in descending order from 256

5.2A Operating bands for UE category M1

UE category M1 is designed to operate in the E-UTRA satellite access operating bands defined in Table 5.2-1 in both half duplex FDD mode and full-duplex FDD mode.

5.2B Operating bands for category NB1 and NB2

Category NB1 and NB2 UE are designed to operate in the E-UTRA satellite access operating bands defined in Table 5.2-1.

Category NB1 and NB2 UE operate in HD-FDD duplex mode.

5.3 Satellite Access Node channel bandwidth

5.3A Channel bandwidth for category M1

The requirements in present document are specified for the channel bandwidth listed in Table 5.3A-1.

Table 5.3A-1: Transmission bandwidth configuration N_RB in E-UTRA channel bandwidths

Channel bandwidth BW_Channel [MHz]	1.4
Transmission bandwidth configuration N_RB	6

Figure 5.3A-1 shows the relation between the SAN channel bandwidth and the transmission bandwidth configuration (N_RB). The channel edges are defined as the lowest and highest frequencies of the carrier separated by the channel bandwidth, i.e. at F_C +/- BW_Channel /2.

Transmission

Center subcarrier (corresponds to DC in baseband) is not transmitted in downlink

Active Resource Blocks

Resource block

Transmission bandwidth configuration [N_RB]

bandwidth [RB]

Channel bandwidth [MHz]

Figure 5.3A-1: Definition of channel bandwidth and transmission bandwidth configuration for one E‑UTRA carrier

5.3B Channel bandwidth for category NB1 and NB2

For category NB1 and NB2, requirements in present document are specified for the channel bandwidth listed in Table 5.3B-1.

Table 5.3B-1: Transmission bandwidth configuration N_RB, N_{tone 15kHz} and N_{tone 3.75kHz}in NB1 and NB2 channel bandwidth

Channel bandwidth BW_Channel [kHz]	200
Transmission bandwidth configuration N_RB	1
Transmission bandwidth configuration N_{tone 15kHz}	12
Transmission bandwidth configuration N_{tone 3.75kHz}	48

Figure 5.3B-1 shows the relation between the category NB1/NB2 SAN channel bandwidth and the Category NB1 /NB2 transmission bandwidth configuration (N_{tone 15kHz}, or N_{tone 3.75kHz}). The channel edges are defined as the lowest and highest frequencies of the carrier separated by the channel bandwidth, i.e. at F_C +/- BW_Channel /2.

NB-IoT channel definitions

Figure 5.3B-1 Definition of channel bandwidth and transmission bandwidth configuration

For NB-IoT standalone operation, NB-IoT requirements for receiver and transmitter shall apply with a frequency offset F_offsetas defined in Table 5.3B-1.

Table 5.3B-1: F_offsetfor NB-IoT standalone operation

Lowest or Highest Carrier	F_offset
Standalone NB-IoT	[200 kHz]

5.4 Channel arrangement

5.4A Channel arrangement for category M1

5.4A.1 Channel spacing

The spacing between carriers will depend on the deployment scenario, the size of the frequency block available and the channel bandwidths. The nominal channel spacing between two adjacent E-UTRA carriers is defined as following:

Nominal Channel spacing = (BW_Channel(1) + BW_Channel(2))/2

where BW_Channel(1) and BW_Channel(2) are the channel bandwidths of the two respective E-UTRA carriers. The channel spacing can be adjusted to optimize performance in a particular deployment scenario.

5.4A.2 Channel raster, carrier frequency and EARFCN

The global frequency raster is defined for all frequencies. The granularity of the global frequency raster is 100 kHz, which means that the carrier centre frequency must be an integer multiple of 100 kHz. For each operating band, a subset of frequencies from the global frequency raster are applicable and forms a channel raster with a granularity ΔF_Raster.

The carrier frequency in the uplink and downlink is designated by the E-UTRA Absolute Radio Frequency Channel Number (EARFCN) in the range 0 – 262143. The relation between EARFCN and the carrier frequency in MHz for the downlink is given by the following equation, where F_{DL_low} and N_Offs-DL are given in Table 5.4A.2-1 and N_DL is the downlink EARFCN.

F_DL = F_{DL_low} + 0.1(N_DL – N_Offs-DL)

The relation between EARFCN and the carrier frequency in MHz for the uplink is given by the following equation where F_{UL_low} and N_Offs-UL are given in Table 5.4.2-1 and N_UL is the uplink EARFCN.

F_UL = F_{UL_low} + 0.1(N_UL – N_Offs-UL)

The applicable channel raster and EARFCNs for each operating band are specified in Table 5.4A.2-1.

For operating bands with a channel raster of 100 kHz, every EARFCN within the operating band shall be applicable for the channel raster, and the step size for the channel raster in Table 5.4A.2‑1 is given as <1>. The broadcast parameter earfcn-LSB defined in [TS36.331] may be used to assist the UE in synchronizing to the cell.

Table 5.4A.2-1: E-UTRA channel numbers

E-UTRA Operating Band	ΔF_Raster (kHz)	Downlink			Uplink
E-UTRA Operating Band	ΔF_Raster (kHz)	F_{DL_low}(MHz)	N_Offs-DL	Range of N_DL (First – <Step size> – Last)	F_{UL_low}(MHz)	N_Offs-UL	Range of N_UL (First – <Step size> – Last)
256	100	2170	229076	229076 –<1>- 229375	1980	261844	261844 –<1>- 262143
255	100	1525	228736	228736 –<1>- 229075	1626.5	261504	261504 –<1>- 261843
NOTE 1: The channel numbers that designate carrier frequencies so close to the operating band edges that the carrier extends beyond the operating band edge shall not be used. This implies that the first 7 channel numbers at the lower operating band edge and the last 6 channel numbers at the upper operating band edge shall not be used for channel bandwidth of 1.4 MHz.

5.4B Channel arrangement for category NB1 and NB2

5.4B.1 Channel spacing

Nominal channel spacing for UE category NB1 and NB2 in stand-alone mode is 200 kHz.

5.4B.2 Channel raster, carrier frequency and EARFCN

The channel raster of UE category NB1/NB2 shall be as defined in clause 5.4A.2, and the channel raster per-frequency band shall be as defined in table 5.4A.2-1.

The carrier frequency of UE category NB1/NB2 in the downlink is designated by the E-UTRA Absolute Radio Frequency Channel Number (EARFCN) as defined in Table 5.4A.2-1, and the Offset of category NB1/NB2 Channel Number to EARFCN in the range of {-10, -9, -8, -7, -6, -5, -4, -3, -2, -1, -0.5, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9} for FDD. The relation between EARFCN, Offset of category NB1/NB2 Channel Number to EARFCN and the carrier frequency in MHz for the downlink is given by the following equation, where F_DL is the downlink carrier frequency of category NB1/NB2, F_{DL_low} and N_Offs-DL are given in table 5.4A.2-1, N_DL is the downlink EARFCN, M_DLis the Offset of category NB1/NB2 Channel Number to downlink EARFCN.

F_DL = F_{DL_low} + 0.1(N_DL – N_Offs-DL) + 0.0025*(2M_DL)

The carrier frequency of UE category NB1/NB2 in the uplink is designated by the E-UTRA Absolute Radio Frequency Channel Number (EARFCN) as defined in Table 5.4A.2-1, and the Offset of category NB1/NB2 Channel Number to EARFCN in the range of {-10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9} for FDD. The relation between EARFCN, Offset of category NB1/NB2 Channel Number to EARFCN and the carrier frequency in MHz for the uplink is given by the following equation, where F_UL is the uplink carrier frequency of category NB1/NB2, F_{UL_low} and N_Offs-UL are given in table 5.4A.2-1, N_UL is the uplink EARFCN, M_ULis the Offset of category NB1/NB2 Channel Number to uplink EARFCN.

F_UL = F_{UL_low} + 0.1(N_UL – N_Offs-UL) + 0.0025*(2M_UL)

NOTE 1: Guard-band operation and in-band operation for NB-IoT are not supported in this version of the specification.

NOTE 2: For the carrier including NPSS/NSSS for stand-alone operation, MDL = 0.