Abstract
Due to the continuous development of mobile communication technologies, commercialized mobile communication systems have been globally deployed. Among them, LTE-A (Long-Term Evolution-Advanced) has been adopted by several countries for the next generation PSNs (Public Safety Networks). To this end, 3GPP has also standardized Mission Critical Push To Talk (MCPTT) services in Release 13. Since the LMR (Land Mobile Radio) system has been widely adopted as the primary technology of the PSNs for a long time, it will take several years for LTE-A to replace it completely. Consequently, issues related to the interconnection of the LTE-A and LMR systems have received attention. In view of this, the interconnection of LTE-A and LMR systems has been standardized in 3GPP Release 15. A new function named IWF (InterWorking Function) was introduced to enable communications between LTE-A and LMR systems. Based on the considered system architecture, this paper first presents the implementation of IWF. Then, MCPTT group call for members between LTE-A and LMR systems is used to verify the feasibility and functionality of the implemented IWF.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Similar content being viewed by others
References
APCO: “Project 25 Push-to-X” website, https://www.apcointl.org/spectrum-management/spectrum-management-resources/interoperability/p25/. Last accessed 30 August 2021
ETSI: “TErrestrial Trunked RAdio” website, https://www.etsi.org/technologies/tetra. Last accessed 30 August 2021
3GPP: Functional architecture and information flows to support Mission Critical Push to Talk (MCPTT), TS 23.379 (July 2020)
3GPP: Mission Critical Push to Talk (MCPTT) call control (Release 16), TS 24.379 (June 2021)
3GPP: Mission Critical Push to Talk over LTE requirements (Release 16), TS 22.179 (March 2019)
3GPP: Mission Critical Communication Interworking with Land Mobile Radio Systems (Release 16), TS 23.283 (Sept 2020)
3GPP: Mission Critical Data over LTE (Release 14), TS 22.282 (March 2017)
SAMSUNG: “Solving Critical Communication Challenges with Mission Critical Push-to-X” website, https://images.samsung.com/is/content/samsung/assets/global/business/networks/insights/white-paper/samsung-mcptx/Samsung_MCPTX_SolutionBrief_FINAL_r1.pdf. Last accessed 22 August 2021
Catalyst: “Interworking - Catalyst Communication Technologies” website, https://www.catcomtec.com/technology/lmr-lte-interworking/. Last accessed 22 August 2021
3GPP: Common Functional Architecture to Support Mission Critical Services (Release 17), TS 23.280 (June 2021)
Rosenberg, J. et al.: SIP: Session Initiation Protocol, RFC 3261 (June 2002)
Handley, M., Mark, V.J., Perkins, C.: SDP: Session Description Protocol, RFC 4566 (July 2006)
Fielding, R., et al.: Hypertext Transfer Protocol -- HTTP/1.1, RFC 2616 (June 1999)
Schulzrinne, H., Casner, S., Frederick, R., Jacobson, V.: RTP: A Transport Protocol for Real-Time Applications, RFC 3550 (July 2003)
3GPP: Technical Specification Group Core Network and Terminals Mission Critical Push To Talk (MCPTT) media plane control, TS 24.380 (Dec. 2019)
Wireshark: https://www.wireshark.org/. Last accessed 22 August 2021
3GPP: Mission Critical Video over LTE (Release 14), TS 22.281 (March 2017)
Acknowledgment
This work was supported in part by the Ministry of Science and Technology, Taiwan, R. O. C., under grant number MOST 109–2221-E-197–028-MY3.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2022 ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering
About this paper
Cite this paper
Tseng, CC., Lien, SY., Zhuang, CX., Kuo, FC., Wang, HC. (2022). InterWorking Function for Mission Critical Push to Talk Services. In: Lin, YB., Deng, DJ., Yang, CT. (eds) Smart Grid and Internet of Things. SGIoT 2021. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 447. Springer, Cham. https://doi.org/10.1007/978-3-031-20398-5_6
Download citation
DOI: https://doi.org/10.1007/978-3-031-20398-5_6
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-031-20397-8
Online ISBN: 978-3-031-20398-5
eBook Packages: Computer ScienceComputer Science (R0)