LTE Cat M1 (also known as LTE-M or eMTC) is the name for a low-power wide area network (LPWAN) designed to connect a high volume of M2M devices in the Internet of things (IoT). It combines a latency below 100 ms with a very low energy consumption. As the name suggests, it is compatible with the cellular LTE network. Core and test specifications for this technology are defined by 3GPP.
IoT terminals and modules that want to make use of this network technology, require the certification by GCF and PTCRB. This implies that they pass the relevant tests according to release 13 and later:
The GCF/PTCRB-validated test platform is based on COMPRION SIMfony, the most popular conformance test platform for combined handset testing of the UICC interface in mobile devices. The version used for this purpose is COMPRION SIMfony CMW500 and listed at GCF and PTCRB as TP 150.
3GPP requires the terminals that implement PSM or eDRX functionality to be thoroughly tested from Release 14 on. COMPRION took the lead with the creation of corresponding test cases. The validation of the COMPRION tests initiated the activation of the GCF work item WI-301-M. Thus, the tests have become part of the GCF certification program. And the North American counterpart PTCRB has also added the tests to their certification program (RFT).
Verizon Wireless has defined their own test plans to assure compliance between components using LTE Cat M1 technology:
The Verizon Cat-M1 solution provided by COMPRION is based on COMPRION SIMfony CMW500 Verizon. The following platforms listed in the Verizon test equipment list can be used for LTE Cat M1 certification: COM3, COM4, COM6, COM7 and COM9.
|GCF Work Items (WI)||PTCRB Request for Testing (RFT)|
|Covered USIM Test Specifications|
|3GPP TS 31.121||WI-125(M), WI-301-M||RFT 085, RFT 104|
|WI-160 (applicable according to Note 20 of Annex F.2 to GCF Certification Criteria)||RFT 029|
|Covered USAT Test Specifications|
|3GPP TS 31.124||WI-137(M), WI-230(M), WI-301-M||RFT 092, RFT 102|
|WI-035 (applicable according to Note 20 of Annex F.2 to GCF Certification Criteria)||RFT 058|