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TR 25.921 (RAN6)
Guidelines and principles for protocol description and error handling

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(P) V7.0.0    2007/07    73 p.
(P) V6.1.0    2005/10    73 p.
(P) V5.5.0    2004/06    74 p.
(P) V4.8.0    2004/06    73 p.
(P) V3.11.0    2004/06    73 p.

Rapporteur:  Mr. Barreto, Luis
See also:  –

This TR provides a guideline for protocol specification of UMTS stage 2 and 3 including the usage of formal languages and rules for error handling. This TR covers control-plane and user-plane protocols specified in TSG-RAN such as RRC, RLC, RANAP, RNSAP, NBAP, PCAP, and SABP.


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1   Scope   PDF-p. 8
2   References
3   Void
4   Principles to ensure compatibility   PDF-p. 9
5   Message Sequence Charts
6   Specification and Description Language
7   Protocol procedure specification rules   PDF-p. 11      Up
8   Message specification   PDF-p. 13
9   Usage of tabular format
9a   Usage of Iub/Iur Frame Protocol
9a.1   Extensions for future releases in Data and Control Frames
9.1   Tabular description of messages and IEs in RRC   PDF-p. 15
9.1a   Tabular description of messages and IEs in RANAP, RNSAP, NBAP, PCAP, and SABP
9.2   Basic types

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