Configure A(ccess) P(oint or 'hotspot') + STA(tion or 'client')
AP+STA mode allows OpenWrt to connect to a wireless hotspot (AP) and provide wireless access from that hotspot to anything connected to the OpenWrt AP and Ethernet ports, the 'br-lan' device. This assumes that your OpenWrt device has the default settings where the AP and Ethernet port are bridged.
Le package de configuration automatique
https://github.com/jordi-pujol/wwanHotspot/
https://github.com/jordi-pujol/wwanHotspot/wiki/Installation#install