5.6 Channel bandwidth

36.1043GPPBase Station (BS) radio transmission and receptionEvolved Universal Terrestrial Radio Access (E-UTRA)Release 18TS

For E-UTRA, requirements in present document are specified for the channel bandwidths listed in Table 5.6-1.

Table 5.6-1 Transmission bandwidth configuration N_RB in E-UTRA channel bandwidths

Channel bandwidth BWChannel [MHz]	1.4	3	5	10	15	20
Transmission bandwidth configuration NRB	6	15	25	50	75	100

For E-UTRA, figure 5.6-1 shows the relation between the channel bandwidth (BW_Channel) 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.

Figure 5.6-1 Definition of Channel Bandwidth and Transmission Bandwidth Configuration for one E‑UTRA carrier

Figure 5.6-2 illustrates the Aggregated Channel Bandwidth for intra-band carrier aggregation.

Figure 5.6-2 Definition of Aggregated Channel Bandwidth for intra-band carrier aggregation

The lower edge of the Aggregated Channel Bandwidth (BW_{Channel_CA}) is defined as F_{edge_low} = F_{C_low} – F_offset. The upper edge of the Aggregated Channel Bandwidth is defined as F_{edge_high} = F_{C_high} + F_offset. The Aggregated Channel Bandwidth, BW_{Channel_CA,} is defined as follows:

BW_{Channel_CA} = F_{edge_high} – F_{edge_low} [MHz]

Figure 5.6-3 illustrates the sub-block bandwidth for a BS operating in non-contiguous spectrum

Figure 5.6-3 Definition of sub-block bandwidth for intra-band non-contiguous spectrum

The lower sub-block edge of the sub-block bandwidth (BW_{Channel,block}) is defined as F_{edge,block, low} = F_C,block,low – F_offset. The upper sub-block edge of the sub-block bandwidth is defined as F_{edge,block,high} = F_C,block,high + F_offset. The sub-block bandwidth, BW_{Channel,block,} is defined as follows:

BW_{Channel,block} = F_{edge,block,high} – F_{edge,block,low} [MHz]

F_offset is defined in Table 5.6-2 below where BW_Channel is defined in Table 5.6-1.

Table 5.6-2: Definition of F_offset

Channel Bandwidth of the Lowest or Highest Carrier: BWChannel[MHz]	Foffset[MHz]
5, 10, 15, 20	BWChannel/2

NOTE 1: F_offset is calculated separately for each Base Station RF Bandwidth edge / sub-block edge.

NOTE 2: The values of BW_{Channel_CA}/BW_{Channel,block} for UE and BS are the same if the channel bandwidths of lowest and the highest component carriers are identical.

For NB-IoT, requirements in present document are specified for the channel bandwidths listed in Table 5.6-3.

Table 5.6-3: Transmission bandwidth configuration N_RB, N_{tone 15kHz} and N_{tone 3.75kHz} in NB-IoT channel bandwidth

NB-IoT	Standalone	In-band	Guard Band
Channel bandwidth BWChannel [kHz]	200	E-UTRA channel bandwidth in Table 5.6-1 for BWChannel>1.4MHz	E-UTRA channel bandwidth in Table 5.6-1 for BWChannel >3MHz
Transmission bandwidth configuration NRB	1	1	1
Transmission bandwidth configuration Ntone 15kHz	12	12	12
Transmission bandwidth configuration Ntone 3.75kHz	48	48	48

For NB-IoT standalone operation, figure 5.6-4 shows the relation between the channel bandwidth (BW_Channel) and the transmission bandwidth configuration (N_RB, N_{tone 15kHz} and N_{tone 3.75kHz}) for NB-IoT standalone operation. 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.

For NB-IoT standalone operation, NB-IoT requirements for receiver and transmitter shall apply with a frequency offset F_offset  as defined in Table 5.6-3A.

Table 5.6-3A: F_offset for NB-IoT standalone operation

Lowest or Highest Carrier	Foffset
Standalone NB-IoT	200 kHz

Figure 5.6-4 Definition of Channel Bandwidth and Transmission Bandwidth Configuration for NB-IoT standalone operation

For NB-IoT in-band operation, figure 5.6-5 shows the relation between the channel bandwidth (BW_Channel) and the transmission bandwidth configuration (N_RB, N_{tone 15kHz} and 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.

Figure 5.6-5 Definition of Channel Bandwidth and Transmission Bandwidth Configuration for NB-IoT in-band operation

For NB-IoT guard band operation, figure 5.6-6 shows the relation between the channel bandwidth (BW_Channel) and the transmission bandwidth configuration (N_RB, N_{tone 15kHz} and 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.

Figure 5.6-6 Definition of Channel Bandwidth and Transmission Bandwidth Configuration for NB-IoT guard band operation