Content for TR 33.825 Word version: 16.0.1
1 Scope
2 References
3 Definitions of terms, symbols and abbreviations
3.1 Terms
3.2 Symbols
3.3 Abbreviations
4 Security aspects of 5G URLLC
...
...
1 Scope p. 7
The present document:
- Investigates and identifies the security key issues for meeting the low latency requirement.
- Investigates and identifies the security key issues for meeting the ultra-high reliability requirement.
- Provides potential security requirements to address the identified security issues.
- Provides the potential security solutions to support URLLC services.
2 References p. 7
The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
- References are either specific (identified by date of publication, edition number, version number, etc.) or non specific.
- For a specific reference, subsequent revisions do not apply.
- For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
[1]
TR 21.905: "Vocabulary for 3GPP Specifications".
[2]
TR 23.725: "Study on enhancement of Ultra-Reliable Low-Latency Communication (URLLC) support in the 5G Core network".
[3]
TS 33.501: "Security architecture and procedures for 5G system".
[4]
TS 23.501: "System Architecture for the 5G System".
[5]
TS 23.502: "Procedures for the 5G System".
[6]
TS 33.210: "3G security; Network Domain Security (NDS); IP network layer security".
[7]
TS 33.310: "Network Domain Security (NDS); Authentication Framework (AF)".
[8]
RFC 4303: "IP Encapsulating Security Payload (ESP)".
[9]
TS 37.340: "NR; Multi-connectivity; Overall description; Stage-2".
[10]
TS 23.503: "Policy and charging control framework for the 5G System (5GS); Stage 2".
3 Definitions of terms, symbols and abbreviations p. 7
3.1 Terms p. 7
For the purposes of the present document, the terms given in TR 21.905 and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905.
3.2 Symbols p. 7
Void.
3.3 Abbreviations p. 8
For the purposes of the present document, the abbreviations given in TR 21.905 and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in TR 21.905.
DC
Dual Connectivity
MCG
Master Cell Group
MgNB
Master gNB
MN
Master Node
NG-RAN
Next Generation-RAN
NR
New Radio
NR-DC
NR-NR Dual Connectivity
PDU
Packet Data Unit
PDCP
Packet Data Convergence Protocol
SCG
Secondary Cell Group
SgNB
Secondary gNB
S-RAN
Secondary RAN
SN
Secondary Node
UP
User Plane
URLLC
Ultra-Reliable Low-Latency Communication
4 Security aspects of 5G URLLC p. 8
The 5GS defined in TS 23.501 is used as the baseline network architecture for 5G URLLC. URLLC needs to support both high reliability and low latency. In order to ensure the high reliability, redundant transmission in 5GS is supported on multiple user plane data paths, something that can hardly be achieved by single path on user plane. Accordingly, the applicable security mechanisms for supporting redundant transmission cover all aspect of the communication, including PDU session establishment, handover etc. As for low latency aspect, the other important requirements for URLLC as described in TR 23.725 include QoS Monitoring to assist URLLC service and optimization for handover procedure, both of which are addressed. The security considerations in this case are covered as well. Moreover, additional security aspects of control plane or user plane optimizations for ensuring the high reliability and reducing latency are also considered together during the whole study and are reflected in the present document.
