Base sensors. What to choose for xbee, wifi or bluetooth communication?

Question

Arduino

Structure: three sensors within a radius of 3-5 meters and a base. What is the best way to organize the communication of sensors with the base? xbee, wifi or bluetooth? Something else? What are the pros/cons?
Each sensor is self-powered (krone).

Answer 1

1. Krona is no good for a long battery life - the capacity is small.
2. wi-fi is power hungry and requires a smarter controller.
3. xbee is specifically designed for automation and supports star topology.
The output is xbee.

Answer 2

A bunch of sensors for 2.4 and 433

Answer 3

NRF24L01plus Not Wi-Fi, but the principle of operation is similar.
ESP8266 ESP-01 Wi-Fi, has a built-in controller, i.e. you can directly connect sensors
. All such devices consume a decent current during reception / transmission, the crown will not last long