5.3A UE channel bandwidth for CA

38.101-13GPPNRPart 1: Range 1 StandaloneRelease 17TSUser Equipment (UE) radio transmission and reception

5.3A.1 General

Figure 5.3A.1-1: Void

Figure 5.3A.1-2: Void

5.3A.2 Maximum transmission bandwidth configuration for CA

For carrier aggregation, the maximum transmission bandwidth configuration is defined per component carrier and the requirement is specified in clause 5.3.2.

5.3A.3 Minimum guardband and transmission bandwidth configuration for CA

For intra-band contiguous carrier aggregation, Aggregated Channel Bandwidth and Guard Bands are defined as follows, see Figure 5.3A.3-1.

FC, low

Lower Edge

Upper Edge

Lowest Carrier Transmission Bandwidth Configuration [RB]

FC, high

Foffset, low

Highest Carrier Transmission Bandwidth Configuration [RB]

Resource block

Aggregated Channel Bandwidth, BWchannel_CA (MHz)

Fedge, low

Fedge, high

Foffset, high

Figure 5.3A.3-1: Definition of Aggregated Channel Bandwidth for intra-band carrier aggregation

The aggregated channel bandwidth, BWChannel_CA, is defined as

BWChannel_CA = Fedge,high – Fedge,low (MHz).

The lower bandwidth edge Fedge, low and the upper bandwidth edge Fedge,high of the aggregated channel bandwidth are used as frequency reference points for transmitter and receiver requirements and are defined by

Fedge,low = FC,low – Foffset,low

Fedge,high = FC,high + Foffset,high

The lower and upper frequency offsets depend on the transmission bandwidth configurations of the lowest and highest assigned edge component carrier and are defined as

Foffset,low = (NRB,low*12 + 1)*SCSlow/2 + BWGB (MHz)

Foffset,high = (NRB,high*12 – 1)*SCShigh/2 + BWGB (MHz)

BWGB = max(BWGB,Channel(k))

NRB,low and NRB,high are the transmission bandwidth configurations according to Table 5.3.2-1 for the lowest and highest assigned component carrier, SCSlow and SCShigh are the sub-carrier spacing for the lowest and highest assigned component carrier respectively. SCSlow, SCShigh, NRB,low, NRB,high, and BWGB,Channel(k) use the largest μ value among the subcarrier spacing configurations supported in the operating band for both of the channel bandwidths according to Table 5.3.5-1 and BWGB,Channel(k) is the minimum guard band for carrier k according to Table 5.3.3-1 for the said μ value.

In case there is no common μ value for both of the channel bandwidths, μ=1 is used for SCSlow, SCShigh, NRB,low, NRB,high, and BWGB,Channel(k).

For intra-band non-contiguous carrier aggregation Sub-block Bandwidth and Sub-block edges are defined as follows, see Figure 5.3A.3-2.

Figure 5.3A.3-2: Definition of sub-block bandwidth for intra-band non-contiguous spectrum

…

Sub block n

Transmission Bandwidth Configuration of the highest carrier in a sub-block [RB]

Transmission Bandwidth Configuration of the lowest carrier in a sub-block [RB]

Fedge,block n, low

FC,block n,high

Fedge,block n,high

Foffset,high

Foffset,low

FC,block n,low

Sub-block Bandwidth, BWChannel,block n (MHz)

Lower Sub-block Edge

Upper Sub-block Edge

Resource block

Sub block n+1

Foffset, low

Fedge,block n+1, low

FC,block n+1,low

FC,block n+1,high

Fedge,block n+1,high

Foffset,high

Sub-block Bandwidth, BWChannel,block n+1 (MHz)

Lower Sub-block Edge

Upper Sub-block Edge

Transmission Bandwidth Configuration of the highest carrier in a sub-block [RB]

Transmission Bandwidth Configuration of the lowest carrier in a sub-block [RB]

Resource block

The lower sub-block edge of the Sub-block Bandwidth (BWChannel,block) is defined as

Fedge,block, low = FC,block,low – Foffset, low.

The upper sub-block edge of the Sub-block Bandwidth is defined as

Fedge,block,high = FC,block,high + Foffset,high.

The Sub-block Bandwidth, BWChannel,block, is defined as follows:

BWChannel,block = Fedge,block,high – Fedge,block,low (MHz)

The lower and upper frequency offsets Foffset,block,low and Foffset,block,high depend on the transmission bandwidth configurations of the lowest and highest assigned edge component carriers within a sub-block and are defined as

Foffset,block,low = (NRB,low*12 + 1)*SCSlow/2 + BWGB (MHz)

Foffset,block,high = (NRB,high*12 – 1)*SCShigh/2 + BWGB(MHz)

BWGB = max(BWGB,Channel(k))

where NRB,low and NRB,high are the transmission bandwidth configurations according to Table 5.3.2-1 for the lowest and highest assigned component carrier within a sub-block, respectively. SCSlow and SCShigh are the sub-carrier spacing for the lowest and highest assigned component carrier within a sub-block, respectively. SCSlow, SCShigh, NRB,low, NRB,high, and BWGB,Channel(k) use the largest μ value among the subcarrier spacing configurations supported in the operating band for both of the channel bandwidths according to Table 5.3.5-1 and BWGB,Channel(k) is the minimum guard band for carrier k according to Table 5.3.3-1 for the said μ value. In case there is no common μ value for both of the channel bandwidths, μ=1 is used for SCSlow, SCShigh, NRB,low, NRB,high, and BWGB,Channel(k).

The sub-block gap size between two consecutive sub-blocks Wgap is defined as

Wgap = Fedge,block n+1,low – Fedge,block n,high (MHz)

5.3A.4 Void

5.3A.5 UE channel bandwidth per operating band for CA

The requirements for carrier aggregation in this specification are defined for carrier aggregation configurations.

For intra-band contiguous carrier aggregation, a carrier aggregation configuration is a single operating band supporting a carrier aggregation bandwidth class with associated bandwidth combination sets specified in clause 5.5A.1. For each carrier aggregation configuration, requirements are specified for all aggregated channel bandwidths contained in a bandwidth combination set, a UE can indicate support of several bandwidth combination sets per carrier aggregation configuration. For intra-band non-contiguous carrier aggregation, a carrier aggregation configuration is a single operating band supporting two or more sub-blocks, each supporting a carrier aggregation bandwidth class.

For intra-band non-contiguous uplink carrier aggregation, frequency separation class (Fs) specified in Table 5.3A.5-2 indicates the maximum frequency span between lower edge of lowest component carrier and upper edge of highest component carrier that UE can support per band combination in uplink in non-contiguous intra-band operation when the signalling is absent for dualPA-Architecture IE.

For inter-band carrier aggregation, a carrier aggregation configuration is a combination of operating bands, each supporting a carrier aggregation bandwidth class.

Table 5.3A.5-1: NR CA bandwidth classes

NR CA bandwidth class

Aggregated channel bandwidth

Number of contiguous CC

Fallback group

A

BWChannel ≤ BWChannel,max

1

1, 2, 34

B

20 MHz ≤ BWChannel_CA ≤ 100 MHz

2

2, 34

C

100 MHz < BWChannel_CA ≤ 2 x BWChannel,max

2

1, 34

D

200 MHz < BWChannel_CA ≤ 3 x BWChannel,max

3

E

300 MHz < BWChannel_CA ≤ 4 x BWChannel,max

4

G

100 MHz < BWChannel_CA ≤ 150 MHz

3

2

H

150 MHz < BWChannel_CA ≤ 200 MHz

4

I

200 MHz < BWChannel_CA ≤ 250 MHz

5

J

250 MHz < BWChannel_CA ≤ 300 MHz

6

K

300 MHz < BWChannel_CA ≤ 350 MHz

7

L

350 MHz < BWChannel_CA ≤ 400 MHz

8

M3

50 MHz ≤ BWChannel_CA ≤ 200 MHz

3

34

N3

80 MHz ≤ BWChannel_CA ≤ 300 MHz

4

O3

100 MHz ≤ BWChannel_CA ≤ 400 MHz

5

NOTE 1: BWChannel, max is maximum channel bandwidth supported among all bands in a release

NOTE 2: It is mandatory for a UE to be able to fallback to lower order NR CA bandwidth class configuration within a fallback group. It is not mandatory for a UE to be able to fallback to lower order NR CA bandwidth class configuration that belong to a different fallback group.

NOTE 3: This bandwidth class is only applicable to bands identified for use with shared spectrum channel access in Table 5.2-1.

NOTE 4: Fallback group 3 is only applicable to bands identified for use with shared spectrum channel access in Table 5.2-1.

Table 5.3A.5-2: NR intra-band non-contiguous UL CA frequency separation classes

NR NC UL CA frequency separation class

Maximum allowed frequency separation

I

100 MHz

II

200 MHz

III

[600MHz]