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DSS - Dynamic spectrum sharing

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

RP-193260

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

RP-201314

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

RP-202084

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/

 

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