Report on MCPTT over LTE Integration with LMR Networks Released
Wednesday, January 10, 2018 | Comments

The National Public Safety Telecommunications Council (NPSTC) released a new report detailing the issues and requirements regarding integration and interoperability between LMR systems and Long Term Evolution (LTE) mission-critical push to talk (MCPTT) services.

One of the proposed new services on the nationwide public-safety broadband network (NPSBN) is mission-critical push to talk (MCPTT), which is being designed to provide some LMR-like services. MCPTT may eventually allow first responders to carry a single device to access voice, video and data. However, comparability with existing LMR systems for voice is yet to be determined based on issues such as coverage and direct unit-to-unit communications.

The report does not advance a notion that all public-safety agencies will migrate their LMR users to the NPSBN. However, it is clear that public-safety agencies will use a mix of LMR and LTE networks in both the short and long term and will need to have effective interoperability solutions.

NPSTC authorized the creation of an LMR-LTE Integration and Interoperability Working Group in 2016 to study how first responders would communicate with the introduction of MCPTT. More than 200 participants representing public safety, industry and academia participated in the working group and in the development of this report.

Working group members created use cases to examine different public-safety operational scenarios involving the use of LMR and LTE PTT services. These use cases led to the creation of public-safety technical requirements and a series of recommendations and conclusions.

The report, “Public Safety Land Mobile Radio (LMR) Interoperability with LTE Mission Critical Push to Talk,” is available here.

The report is also summarized in the September 2017 cover story of MissionCritical Communications.

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