Research | Research focus | Limitation |
---|---|---|
LTE-M and NB-IoT technologies in ITS [16] | Gathering the data of air pollution in the ITS environment | Only consider the air pollutions data. |
Very small data packets size | ||
Zigbee and LTE-M based ITS applications [16] | The Bus Information and Schedules | Only focuses on the stationary data collection at the bus stations |
Communications network for urban rail transit systems | Focuses on stationary data collections. | |
not scalable to other scenarios | ||
NB-IoT based ITS applications [22] | Crowd-sensing scenario | Small size data collection. |
Max data rate- uplink is 20 kbps | ||
NB-IoT based M2M Communications [20] | The design for a M2M Communications include lowcost devices, high coverage, long device battery life, and massive capacity. | Max data rate- uplink is 20 kbps. Not scalable for other ITS applications |
LoRa Based V2X [24] | Developing a D2D based reliable and low power LoRa architecture | Very small packet sizes (100s bytes) |
High latency |