1. Common IMS Management CIMS-080020 3GPP/3GPP2 Common IMS Workshop Puerto Vallarta, Mexico, 24-25 January 2008 Source: 3GPP2 Document for: Discussion Agenda Item: 4.4

2. 1 3GPP and 3GPP2 IMS Management Harmonization The management of 3GPP and 3GPP2-based IMS networks are harmonized at two levels: –Interfaces –Models and Network Element Specific Data

3. 2 Interfaces The 3GPP SA5 32-series of specifications are reused in 3GPP2 TSG-S WG5 and 3GPP2 TSG-X WG3 (charging) specifications, whenever appropriate. The concepts of Integration Reference Points (IRPs) and Itf-N interfaces are shared between 3GPP and 3GPP2. –Typically, this means that the management interfaces are common between 3GPP and 3GPP2 (e.g., common alarm interfaces, common provisioning interfaces, common performance management interfaces, common charging interfaces, etc.) –but the network element specific information are not common (e.g., different Network Resource Models (NRMs), different performance measurements, different Call Detail Records (CDRs), etc.). For non-charging management interfaces, the 3GPP2 S.S0028-001-C (and 3GPP2 S.S0028-001-D) specifications describe any additions or exclusions from the 3GPP SA5 Release 6 (and Release 7) specifications. For charging, the additions or exclusions are described in the 3GPP2 X.S0013- 007-A and 3GPP2 X.S0013-008-A specifications

4. 3 Models and Network Element Specific Data For IMS models and network element specific data, much of the data is common between 3GPP and 3GPP2 when there is commonality between the 3GPP and 3GPP2 architectures. –As an example, 3GPP SA5 and 3GPP2 TSG-S WG5 share a common underlying object model (called the Generic NRM, 3GPP R7 32.622) that all object models are built upon. In Release 7, 3GPP and 3GPP2 will also share common IMS object model specifications (3GPP R7 32.731, 32.732, 32.733 and 32.735). These specifications (and the corresponding 3GPP2 specifications), will specify both 3GPP and 3GPP2 shared objects and 3GPP or 3GPP2-specific objects (where there are architecture differences, such as unique interfaces between IMS and the 3GPP and 3GPP2 Radio Access Networks).

5. 4 Management Issues With Moving Toward Common IMS The management issues with moving toward the 3GPP and 3GPP2-based Common IMS networks are relative to: –Architecture Specifications –Management Specifications

6. 5 Architecture Specifications 3GPP architecture needs to clearly designate Common IMS network elements and reference points between Common IMS network elements: –Reference points between Common IMS network elements and 3GPP-specific networks or 3GPP2-specific networks need to be the responsibility of other 3GPP / 3GPP2 specifications (or clearly designated as not part of Common IMS)

7. 6 Management Specifications 3GPP SA5 needs to separate Common IMS performance measurements for interfaces between Common IMS network elements from those on interfaces to non- Common IMS network elements: –Similarly, 3GPP 32.72X series should only reflect Common IMS models and not interfaces between Common IMS network elements and other 3GPP networks (or clearly designate these other modeled interfaces as 3GPP-specific) –3GPP2 TSG-S WG5 will be responsible for modeling interfaces between Common IMS network elements and other 3GPP2 networks, 3GPP SA5 for interfaces to other 3GPP networks. –Similar comments with Common IMS call trace