Rel-17 Dual Connectivity (DC) of 1 LTE band (1DL/1UL) and 1 NR band (1DL/1UL)
The present document is a technical report for Dual Connectivity (DC) of 1 LTE band (1DL/1UL) and 1 NR band (1DL/1UL) under Rel-17 time frame.
The purpose is to gather the relevant background information and studies in order to address Dual Connectivity (DC) of 1 LTE band (1DL/1UL) and 1 NR band (1DL/1UL) for the Rel-17 band combinations in Table 1-1, 1-2, 1-3 and 1-4, including EN-DC and NE-DC combinations. The actual requirements are added to the corresponding technical specifications.
Table 1-1: Release 17 EN-DC of 1 LTE band (1DL/1UL) and 1 NR band (1DL/1UL) within FR1
DC combination
Uplink EN-DC configuration
DC_8A_n7A
DC_8A_n7A
DC_66A_n77A
DC_66A-66A_n77A
DC_66A-66A-66A_n77A
DC_66A_n77A
DC_13A_n77A
DC_13A_n77A
DC_5A_n77A
DC_5A_n77A
DC_2A_n77A
DC_2A-2A_n77A
DC_2A_n77A
DC_19A_n1A
DC_19A_n1A
DC_21A_n1A
DC_21A_n1A
DC_42A_n1A
DC_42C_n1A
DC_42A_n1A
DC_48A_n25A
DC_48C_n25A
DC_48D_n25A
DC_48A_n25A
DC_28A_n2A
DC_28A_n2A
DC_2A_n28A
DC_2A_n28A
DC_4A_n2A
DC_4A_n2A
DC_4A_n5A
DC_4A_n5A
DC_4A_n7A
DC_4A_n7A
DC_28A_n66A
DC_28A_n66A
DC_4A_n28A
DC_4A_n28A
DC_66A_n28A
DC_66A_n28A
DC_28A_n1A
DC_28A_n1A
DC_42A_n3A
DC_42A_n3A
DC_42C_n3A
DC_42A_n3A
DC_42C_n3A
DC_8A_n2A
DC_8A_n2A
DC_18A_n28A
DC_18A_n28A
DC_18A_n41A
DC_18A_n41A
DC_7A_n2A
DC_7C_n2A
DC_7A_n2A
DC_71A_n71A
DC_71A_n71A1
DC_25A_n77A
DC_25A_n77A
DC_25A-25A_n77A
DC_25A_n77A
DC_25A_n78A
DC_25A_n78A
DC_25A-25A_n78A
DC_25A_n78A
DC_21A_n28A2
DC_21A_n28A
DC_12A_n71A
DC_12A_n71A3,4
DC_71A_n41A
DC_71A_n41A
DC_71A_n2A
DC_71A_n2A
DC_2A_n30A
DC_2A_n30A
DC_5A_n30A
DC_5A_n30A
DC_12A_n30A
DC_12A_n30A
DC_66A_n30A
DC_66A_n30A
DC_11A_n41A
DC_11A_n41A
DC_66A_n66A
DC_66A_n66A1
DC_38A_n28A
DC_38A_n28A
DC_12A_n77A
DC_12A_n77A
DC_14A_n77A
DC_14A_n77A
DC_30A_n77A
DC_30A_n77A
DC_14A_n30A
DC_14A_n30A
DC_7A_n25A
DC_7A_n25A
DC_7A-7A_n25A
DC_7A_n25A
DC_7C_n25A
DC_7A_n25A
DC_13A_n25A
DC_13A_n25A
DC_3A-3A_n8A
DC_3A_n8A
DC_7A-7A_n8A
DC_7A_n8A
DC_48A_n77A5. 6. 7, 8
N/A
DC_38A_n3A
DC_38A_n3A
DC_(n)66AA
DC_(n)66AA1
DC_38A_n1A
DC_38A_n1A
DC_38A_n8A
DC_38A_n8A
DC_(n)3AA
DC_(n)3AA1
DC_14A_n5A
DC_14A_n5A
DC_11A_n1A
DC_11A_n1A
DC_41A_n1A
DC_41C_n1A
DC_41A_n1A
DC_41C_n1A
DC_7A_n79A
DC_7A_n79C
DC_7A_n79A
DC_38A_n79A
DC_38A_n79C
DC_38A_n79A
DC_5A_n1A
DC_5A_n1A
DC_5A_n3A
DC_5A_n3A
DC_2A_n25A9. 10. 11
N/A
DC_(n)7AA
DC_(n)7AA1
DC_71A_n77A
DC_71A_n77A
DC_48A_n2A
DC_48A_n2A
NOTE 1: Only single switched UL is supported.
NOTE 2: The frequency range in band n28 is restricted for this band combination to 728 - 738 MHz for the UL and 783 - 793 MHz for the DL. This restriction applies also for these band combinations when applicable EN-DC configuration is part of a higher order EN-DC configuration.
NOTE 3: Only single switched UL is supported.
NOTE 4: The implementation with 4 antennas is targeted for FWA form factor for this band combination.
NOTE 5: The minimum requirements apply only when there is non-simultaneous Tx/Rx operation between E-UTRA and NR carriers. This restriction applies also for these carriers when applicable EN-DC configuration is part of a higher order EN-DC configuration.
NOTE 6: The minimum requirements for intra-band non-contiguous EN-DC apply. When UE capability interBandContiguousMRDC is indicated, the minimum requirements for intra-band-contiguous EN-DC also should be met in addtion to intra-band non-contiguous EN-DC. The intra-band requirements also apply for these carriers when applicable EN-DC configuration is a subset of a higher order EN-DC configuration.
NOTE 7: The combination is not used alone as fall back mode of other band combinations in which UL in Band 42 or Band 48 is not used.
NOTE 8: The minimum requirements for inter-band EN-DC apply when the maximum power spectral density imbalance between downlink carriers is within 6 dB. The power spectral density imbalance condition also applies for these carriers when applicable EN-DC configuration is a subset of a higher order EN-DC configuration.
NOTE 9: The combination is not used alone as fallback mode of other band combinations in which UL in Band 2 is not used.
NOTE 10: The minimum requirements for inter-band EN-DC apply when the maximum power spectral density imbalance between downlink carriers is within 6 dB. The power spectral density imbalance condition also applies for these carriers when applicable EN-DC configuration is a subset of a higher order EN-DC configuration.
NOTE 11: The minimum requirements apply for synchronized DL carriers with a maximum receive time difference ≤ 3 usec. The requirements also apply for these carriers when applicable EN-DC configuration is a subset of a higher order EN-DC configuration.
Table 1-2: Release 17 EN-DC of 1 LTE band (1DL/1UL) and 1 NR band (1DL/1UL) including FR2
DC combination
Uplink EN-DC configuration
DC_66A_n261(A-L)
DC_66A_n261A
DC_66A_n261G
DC_66A_n261H
DC_66A_n261I
DC_66A_66A_n261(A-L)
DC_66A_n261A
DC_66A_n261G
DC_66A_n261H
DC_66A_n261I
DC_48A_n261(A-L)
DC_48A_n261A
DC_48A_n261G
DC_48A_n261H
DC_48A_n261I
DC_13A_n261(A-L)
DC_13A_n261A
DC_13A_n261G
DC_13A_n261H
DC_13A_n261I
DC_5A_n261(A-J)
DC_5A_n261A
DC_5A_n261G
DC_5A_n261H
DC_5A_n261I
DC_5A_n261(A-L)
DC_5A_n261A
DC_5A_n261G
DC_5A_n261H
DC_5A_n261I
DC_2A_n261(A-L)
DC_2A_n261A
DC_2A_n261G
DC_2A_n261H
DC_2A_n261I
DC_2A-2A_n261A
DC_2A_n261A
DC_2A-2A_n261I
DC_2A_n261A
DC_2A_n261G
DC_2A_n261H
DC_2A_n261I
DC_2A-2A_n261M
DC_2A_n261A
DC_2A_n261G
DC_2A_n261H
DC_2A_n261I
DC_20A_n257A
DC_20A_n257B
DC_20A_n257C
DC_20A_n257D
DC_20A_n257E
DC_20A_n257F
DC_20A_n257G
DC_20A_n257H
DC_20A_n257I
DC_20A_n257J
DC_20A_n257K
DC_20A_n257L
DC_20A_n257M
DC_20A_n257A
DC_3A-3A_n257G
DC_3A-3A_n257H
DC_3A-3A_n257I
DC_3A-3A_n257J
DC_3A-3A_n257K
DC_3A-3A_n257L
DC_3A-3A_n257M
DC_3A_n257G
DC_3A_n257H
DC_3A_n257I
DC_3A_n257J
DC_3A_n257K
DC_7A-7A_n257J
DC_7A-7A_n257K
DC_7A-7A_n257L
DC_7A-7A_n257M
DC_7A_n257J
DC_7A_n257K
DC_7A_n257J
DC_7A_n257K
DC_7A_n257L
DC_7A_n257M
DC_7A_n257J
DC_7A_n257K
Table 1-3: Release 17 NE-DC of 1 LTE band (1DL/1UL) and 1 NR band (1DL/1UL) within FR1
DC combination
Uplink NE-DC configuration
DC_n28A_3A
DC_n28A_3C
DC_n28A_3A
DC_n28A_8A
DC_n28A_8B
DC_n28A_8A
DC_n28A_40A
DC_n28A_40C
DC_n28A_40A
DC_n41A_3A
DC_n41A_3C
DC_n41C_3A
DC_n41A_3A
DC_n41A_8A
DC_n41A_8B
DC_n41C_8A
DC_n41A_8A
DC_n41A_34A1
DC_n41A_34A
DC_n41A_39A1
DC_n41A_39C1
DC_n41C_39A1
DC_n41A_39A
DC_n41A_40A1
DC_n41A_40C1
DC_n41C_40A1
DC_n41A_40A
DC_n3A_1A
DC_n3A_1A
DC_n8A_1A
DC_n8A_1A
DC_n77A_1A
DC_n77(2A)_1A
DC_n77A_1A
DC_n77A_3A
DC_n77(2A)_3A
DC_n77A_3A
DC_n3A_8A
DC_n3A_8A
DC_n8A_3A
DC_n8A_3A
DC_n77A_8A
DC_n77(2A)_8A
DC_n77A_8A
DC_n28A_34A
DC_n28A_34A
DC_n28A_39A
DC_n28A_39C
DC_n28A_39A
NOTE 1: The minimum requirements apply only when there is non-simultaneous Tx/Rx operation between E-UTRA and NR carriers. This restriction applies also for these carriers when applicable EN-DC configuration is part of a higher order EN-DC configuration.
Table 1-4: Release 17 NE-DC of 1 LTE band (1DL/1UL) and 1 NR band (1DL/1UL) including FR2
DC combination
Uplink NE-DC configuration