October 14, 2020
Dynamic spectrum sharing (DSS) provides a very useful migration path from LTE to NR by allowing LTE and NR to share the same carrier. DSS was included already in Rel-15 and further enhanced in Rel-16.
As the number of NR devices in a network increases, it is important that sufficient scheduling capacity for NR UEs on the shared carriers is ensured.
Source: Tdoc RP-193260 from TSG RAN#86, December 2019 (Approved)
3GPP Work in Release 17:
|
|
Name |
Acronym |
Outline Level |
Release |
Working Group |
Hyperlink |
|
860043 |
NR Dynamic spectrum sharing (DSS) |
NR_DSS |
1 |
Rel-17 |
R1 |
|
|
860143 |
Core part: NR Dynamic spectrum sharing (DSS) |
NR_DSS-Core |
2 |
Rel-17 |
R1 |
|
|
880095 |
LTE/NR spectrum sharing in Band 38/n38 |
DSS_LTE_B38_NR_Bn38 |
1 |
Rel-17 |
R4 |
|
|
880195 |
Core part: LTE/NR spectrum sharing in Band 38/n38 |
DSS_LTE_B38_NR_Bn38-Core |
2 |
Rel-17 |
R4 |
|
|
880096 |
LTE/NR spectrum sharing in Band 40/n40 |
DSS_LTE_B40_NR_Bn40 |
1 |
Rel-17 |
R4 |
|
|
880196 |
Core part: LTE/NR spectrum sharing in Band 40/n40 |
DSS_LTE_B40_NR_Bn40-Core |
2 |
Rel-17 |
R4 |
|
|
880296 |
Perf. part: LTE/NR spectrum sharing in Band 40/n40 |
DSS_LTE_B40_NR_Bn40-Perf |
2 |
Rel-17 |
R4 |
|
Note: For an up-to-date view of the work on 3GPP DSS, check the Work Plan at: https://www.3gpp.org/ftp/Information/WORK_PLAN/
Guidance is provided, in the NR specifications (38.211, 212, 214, 331) but a lot of DSS features have been described as ‘proprietary’ and dependant on individual operator requirements. However, the following specs have been updated or provide important content for DSS provision:
|
TS 38.211 |
NR; Physical channels and modulation |
RAN#86 (RP-192646) Introduction of enhanced support for dynamic spectrum sharing (Rel-16). Refers to R1-1913668 (RAN1 document – Status; Agreed) |
|
TS 38.212 |
NR; Multiplexing and channel coding |
|
|
TS 38.214 |
NR; Physical layer procedures for data |
|
|
TS 38.331 |
NR; Radio Resource Control (RRC); Protocol specification |
RAN#84 (RP-191381) Introduction of a new NR band for LTE/NR spectrum sharing in Band 41/n41 (Rel-15) |
Note: For an up-to-date view of the work on 3GPP DSS, check the Work Plan at: https://www.3gpp.org/ftp/Information/WORK_PLAN/
