Interoperability Between Machine-to-Machine Communication System and IP Multimedia Subsystem - Interoperability and Open-Source Solutions for the Internet of Things - page 114

17-20 S-CSCF (B) sends 200 OK towards MTAS (B) and S-CSCF (A) towards
MTAS (A).
21-22 S-CSCF (A) sends 200 OK towards UE-A (UAA) with acknowledgement
after which the session is established over RTP between UE(A)-BGF(A)-
BGF(B)-UE(B).
This is example of complex M2M service that uses IMS infrastructure for
providing M2M service.
7 Conclusion
This paper analizes the current state of the standards in the area of M2M and
IMS. Interworking betweeen M2M system and IMS is introduced and compared
with the related work. Currently, only few papers consider interworking between
the two and all of them introduce new nodes in the network. The proposed
solution from this paper does not include new nodes, but the existing nodes
need to extend their functionality. The proposed solution is better because if
M2M communication does not benefit from IMS, it will not use it. However, if
IMS can provide some extra functionality that is not in the M2M system, then
it can use IMS. The paper shows this in the case of home security area.
The future work will include implementation of different cases (including
this one) and further research on interworking and using IMS and its quality
of service for streaming other media (not audio and video) such as continuous
critical measurements (e.g. M2M applications in medicine).
References
1. 3GPP TS 23.218 - IP Multimedia (IM) session handling. http://www.3gpp.org/
DynaReport/23218.htm . Accessed July 2014
2. 3GPP TS 23.228 - IP Multimedia Subsystem (IMS). http://www.3gpp.org/
DynaReport/23228.htm . Accessed July 2014
3. IEFT, RFC 3261 - SIP: Session Initiation Protocol. http://www.ietf.org/rfc/
rfc3261.txt . Accessed July 2014
4. IEFT, RFC 3264 - An Offer/Answer Model with Session Description Protocol
(SDP). http://www.ietf.org/rfc/rfc3264.txt . Accessed July 2014
5. IEFT, RFC 4240 - Basic Network Media Services with SIP. http://tools.ietf.org/
html/rfc4240 . Accessed July 2014
6. IEFT, RFC 4566 - SDP: Session Description Protocol. http://www.ietf.org/rfc/
rfc4566.txt . Accessed July 2014
7. OpenMTC. http://www.open-mtc.org/index.html . Accessed May 2014
8. Blum, N., Fiedler, J., Lange, L., Magedanz, T.: Application-driven quality of ser-
vice for M2M communications. In: 2011 15th International Conference on Intelli-
gence in Next Generation Networks (ICIN), pp. 41-45, October 2011
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roach. Wiley-Blackwell, Oxford (2012)
10. Camarillo, G., Garcia-Martin, M.A.: The 3G IP Multimedia Subsystem (IMS):
Merging the Internet and the Cellular Worlds. Wiley, Chichester (2007)