As Internet of Things (IoT) becomes increasingly popular, more and more devices, including open (SIM free) devices that uses cellular module, are expected to be connected to a carrier’s network.
To help promote such devices to a wider audience. To enable an ever easier connection to our network.
Bearing in mind the goals above, we provide all the necessary information to conduct our connectivity verification (IOT: Interoperability Testing) on this site.
IOT is a test to confirm the connection compatibility between a manufacturer’s product and KDDI’s network.
|1||Pre-IOT||Tests conducted using simulator|
|2||IOT-L (Lab Test)||Test(s) conducted in KDDI's lab (※1)|
|3||IOT-F (Field Test)(※2)||Test(s) conducted in KDDI's commercial network. (Parts of the test are conducted using simulator)|
As of now, KDDI’s connectivity verification is only intended for LTE network. As such, the information provided on this site is only for LTE system. Please refer to the image below for our network architecture outline.
|UE||User Equipment||Device used by the end user|
|eNB||Evolved Node B||LTE network base station|
|SGW||Serving Gateway||User data (packet) relay server|
|PGW||Packet Data Network Gateway||Outer network data (packet) relay server|
|MME||Mobility Management Entity||Network signaling control server|
|HSS||Home Subscriber Server||Subscriber control server|
|IMS||IP Multimedia Subsystem||Voice and SMS control server|
|PCRF||Policy and Charging Rules Function||Communication policy and charging control server|
|e911 LCS||Enhanced 911 Location Service||Emergency call location positioning server|
|INET||Internet||Internet, World Wide Web|
To connect to our network, your product shall comply with 3GPP/RFC specifications and fulfill the following requirements.
|Emergency call uses SUPL2.0 protocol.
LPWA (LTE-M) uses 800MHz (B18/26).
LTE anchor for 5G uses B1 and B3.
|Supported system||Data communication||LTE / 5G||UMTS/GSM is not supported,
CDMA2000 is outside the scope of IOT.
LPWA is supported only LTE-M.
|Voice call||VoLTE||CS call (CDMA/UMTS/GSM) is not supported.
VoLTE is not supported in LPWA (LTE-M).
|SMS||SMS over IMS||Excluding LPWA (LTE-M)|
|SMS over SGs||Only for LPWA (LTE-M)|
|SIM Card||LTE / 5G||Nano SIM Card(4FF)||Voice call requires Nano SIM Card(4FF)|
Products that comply with standard specifications still may not connect correctly with our network. Therefore, we strongly recommend conducting connectivity verification to avoid problems.