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TR 38.846
Study on simplification of band combination specification

3GPP‑Page
V18.1.0 (Wzip)  2024/06  74 p.
Rapporteur:
Dr. Ma, Zhifeng
ZTE Corporation

full Table of Contents for  TR 38.846  Word version:  18.1.0

1Scope  p. 7
2References  p. 7
3Definitions of terms, symbols and abbreviations  p. 7
3.1Terms  p. 7
3.2Symbols  p. 8
3.3Abbreviations  p. 8
4Background  p. 9
5Working procedure of specifying band combinations  p. 10
5.1General  p. 10
5.1ABand combination request  p. 11
5.1A.1Band combination workflow  p. 11
5.1A.1.1The workflow on introduction of band combinations for block approval  p. 11
5.1BUsage of band combination  p. 12
5.1B.1Notation of CA or DC configurations in the request sheets and work item descriptions  p. 12
5.2New templates for specifying band combinations  p. 12
5.2.1Templates for PC3 band combinations  p. 12
5.2.2Templates for high power UE band combinations  p. 14
5.2.3New templates of delta TIB / RIB due to NE-DC and SUL band combinations in Rel-18  p. 15
5.2.4New template for ΔTIB,c and ΔRIB,c tables for CA/DC  p. 16
5.3Fallback aspects for specifying band combinations  p. 17
5.4Submitting technical contributions (Tdoc) for specifying band combinations  p. 18
5.4.1Text Proposal (TP) or Draft Change Request (draft CR)  p. 18
5.4.2Specific for Text Proposal (TP)  p. 18
5.4.3Specific for Draft Change Request (draft CR)  p. 18
5.4.4Which agenda to submit the Tdoc for  p. 18
6Guidelines of specifying band combinations  p. 18
6.1General  p. 18
6.1ANotation of lists of bands and bandwidths within a configuration  p. 20
6.1A.1Band numbers  p. 20
6.1A.2Bandwidth classes  p. 20
6.1A.2.1Bandwidth classes for LTE  p. 20
6.1A.2.2Bandwidth classes for NR  p. 21
6.1BRules to be used for the notation of CA or DC configurations  p. 22
6.1CAdding or removing channel BW's in NR CA configurations  p. 23
6.1C.1Adding channel BW's in NR CA configurations  p. 23
6.1C.2Removing channel BW's in NR CA configurations  p. 23
6.1C.2.1Removing of not possible channel BW's  p. 23
6.1C.2.2Removing of possible channel BW's  p. 23
6.2Guidelines on band combination fallbacks  p. 24
6.2.1General definition of fallbacks  p. 24
6.2.2Mandatory Fallbacks  p. 25
6.2.3Fallbacks of EN-DC Configurations  p. 26
6.2.4Fallbacks of UL Configurations  p. 26
6.2.5Fallback rules for some exceptional cases  p. 26
6.2.6Guidelines on valid CBW for higher order BC depending on fallbacks  p. 27
6.3Guidelines on delta TIB and RIB due to band combinations  p. 27
6.4Guidelines on simplification for CA configurations  p. 28
6.5Guidelines on Co-Existence analysis  p. 29
6.5.1Uplink Intra-Band CA with one UL CC transmissions  p. 29
6.5.2Uplink Intra-Band CA with two UL CC transmissions  p. 30
6.5.3Uplink triple beat  p. 32
6.6Rules for band combination with BCS4/BCS5  p. 33
6.6.1Introduction of BCS4/BCS5  p. 33
6.6.2Guidelines for band combination with BCS4/BCS5  p. 35
6.6.3The maximum aggregated bandwidth for intra-band CA with BCS4/BCS5  p. 35
6.7Guidelines on simplification for 3DL/2UL MSD due to 2UL IMD interference  p. 35
6.8Guidelines on configuration tables  p. 36
6.8.1CA configuration table  p. 36
6.8.2DC configuration table  p. 39
6.8.3SUL configuration table  p. 44
7Test burden reduction for band combinations  p. 46
7.1General  p. 46
7.2Similarity and Dependency of Tx RF requirements for different features on the same band combination  p. 46
7.2.1Maximum output power  p. 46
7.2.2Spurious emission for UE-to-UE coexistence  p. 54
7.3Similarity and Dependency of Rx RF requirements for different features on the same band combination  p. 54
7.3.1REFSENS exception due to harmonic/harmonic mixing interference for inter-band combinations (two bands)  p. 54
7.3.2REFSENS exception due to cross band isolation interference for inter-band combinations (two bands)  p. 54
7.3.3REFSENS exception due to inter-modulation distortion for inter-band combinations (two bands)  p. 55
7.3.4REFSENS requirements without any degradation for inter-band combinations (two bands)  p. 68
7.4Test burden reduction for multiple MSD  p. 68
8Conclusion  p. 71
$Change history  p. 72

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