A method for communication between a mobile device and a base station , wherein the mobile device is in wireless communication directly with the base station and in wireless communication with a Wireless Local Area Network, WLAN, access point , which WLAN access point is in communication with the base station , the method performed at the mobile device and comprising the steps of: configuring the mobile device according to pre-defined rules to transmit data from the mobile device to the base station directly to the base station or via the WLAN access point ; and transmitting data from the mobile device to the base station according to the received rules, wherein the pre-defined rules are received by the mobile device from the base station , wherein: a first rule of the received rules indicates a threshold amount of data for transmission from the mobile device used to determine whether the data is transmitted directly to the base station or to the base station via the WLAN access point , and characterised in that : a second rule of the received rules indicates, if the mobile device has greater than the threshold amount of pending data for transmission to the base station , whether the data should be transmitted directly to the base station or to the base station via the WLAN access point , and a third rule of the received rules indicates that if the mobile device determines that the amount of pending data for transmission to the base station does not exceed the threshold, the data should be transmitted either directly to the base station or to the base station the WLAN access point according to a default configuration. configuring the mobile device according to pre-defined rules to transmit data from the mobile device to the base station directly to the base station or via the WLAN access point ; and transmitting data from the mobile device to the base station according to the received rules, wherein the pre-defined rules are received by the mobile device from the base station , wherein: a first rule of the received rules indicates a threshold amount of data for transmission from the mobile device used to determine whether the data is transmitted directly to the base station or to the base station via the WLAN access point , and characterised in that : a second rule of the received rules indicates, if the mobile device has greater than the threshold amount of pending data for transmission to the base station , whether the data should be transmitted directly to the base station or to the base station via the WLAN access point , and a third rule of the received rules indicates that if the mobile device determines that the amount of pending data for transmission to the base station does not exceed the threshold, the data should be transmitted either directly to the base station or to the base station the WLAN access point according to a default configuration. a second rule of the received rules indicates, if the mobile device has greater than the threshold amount of pending data for transmission to the base station , whether the data should be transmitted directly to the base station or to the base station via the WLAN access point , and a third rule of the received rules indicates that if the mobile device determines that the amount of pending data for transmission to the base station does not exceed the threshold, the data should be transmitted either directly to the base station or to the base station the WLAN access point according to a default configuration. <EOS>