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TR 23.898 (SA2)
Access Class Barring and Overload Protection (ACBOP)

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(W-zip) V7.0.0    2005/04    27 p.

Rapporteur:  Mr. Davidian, Jean-Jacques
See also:  –

This TR studies 3GPP system enhancements e.g. CS or PS domain specific access control to cope with several network overload and failure situations. This feasibility study also identifies the potential technical solutions for UTRAN and GERAN access control and overload protection.


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1 Scope    2 References    3 Definitions, symbols and abbreviations    3.1 Definitions    3.2 Abbreviations    4 Congestion and Failure Scenarios    4.1 MSC/VLR or SGSN Congestion or Failure    4.2 MGW and/or voice transit network overload or failure    4.3 SS7 signalling network overload/failure    4.4 Terminating calls/events    4.5 HLR Overload/Failure    4.6 GGSN Overload/Failure    4.7 Packet backbone (GTP-U or Gi) overload/failure    4.8 Wide area radio interface congestion causing RNC/BSC overload/failure    4.9 Cell level congestion/access for emergency services    4.10 Multiple RATs    4.11 Intra-domain connection of Radio Access Network (RAN) nodes to multiple Core Network (CN) nodes (Iu Flex)    4.12 Network Sharing    4.13 Handover into overloaded areas    4.14 MBMS point to point repair    5 Functional Requirements    5.1 General overview    5.2 Functional requirements for access control mechanisms    5.3 Additional requirements    6 Potential Technical Solutions    6.1 Domain Specific Access Class Barring approach    6.2 Service Specific Access Class Barring approach    6.3 Handling overload situations by alternative solutions    6.4 O&M Guidance    7 Conclusion    A Interlayer primitives within the UE    B Improvements to prevent/delay automatic re-establishment attempts (requirement g)    B.1 Classification of exiting GPRS/SMS specific cause value    B.2 Duration of wait timer and other configurations within MT    C Combination of Access Class Control    D Change history   


1   Scope   Word-p. 5
2   References
3   Definitions, symbols and abbreviations   Word-p. 6
4   Congestion and Failure Scenarios
5   Functional Requirements
6   Potential Technical Solutions
6.1   Domain Specific Access Class Barring approach      Up
6.2   Service Specific Access Class Barring approach
6.3   Handling overload situations by alternative solutions   Word-p. 20
6.4   O&M Guidance
7   Conclusion
A   Interlayer primitives within the UE   Word-p. 22
B   Improvements to prevent/delay automatic re-establishment attempts (requirement g)   Word-p. 24
C   Combination of Access Class Control
D   Change history   Word-p. 27      Up

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