Method for dynamic load balancing using different data transmission paths in a telecommunications network comprising a mobile network part and a fixed network part, and comprising at least one mobile device, wherein the telecommunications network comprises a plurality of router devices, the plurality of router devices comprising at least a first router device and a second router device, wherein the first router device comprises at least a first, wireline, interface with the fixed network part and at least a second, wireless, interface, wherein the second router device comprises at least a third, wireline, interface with the fixed network part and at least one wireless interface, wherein the first router device and the second router device are able to be connected using the second, wireless, interface as well as the at least one wireless interface of the second router device, wherein the at least one wireless interface of the second router device corresponds -- either to the second, wireless, interface such that the first router device and the second router device are connected directly to each other, - constituting an alternative data transmission path compared to the first router device using the first, wireline, interface as data transmission path with the fixed network part - -- or to a fourth, wireless, interface, the fourth, wireless, interface connecting the first and second router devices (100, 160) via corresponding wireless interfaces of the mobile device such that the first router device and the second router device are connected indirectly to each other, - and likewise constituting an alternative data transmission path compared to the first router device using the first, wireline, interface as data transmission path with the fixed network part -, wherein the method comprises the following steps: -- in a first step, communication data are exchanged between the fixed network part and the first router device using the first, wireline, interface as the data transmission path, -- in a second step, further communication data are exchanged using the alternative data transmission path, either in addition to using the data transmission path or instead of using the data transmission path, between the fixed network part and the first router device - via the second router device - using -- either the third, wireline, interface and the second, wireless, interface, -- or using the third, wireline, interface, the second, wireless, interface, and the fourth, wireless, interface via the mobile device. -- either to the second, wireless, interface such that the first router device and the second router device are connected directly to each other, - constituting an alternative data transmission path compared to the first router device using the first, wireline, interface as data transmission path with the fixed network part - -- or to a fourth, wireless, interface, the fourth, wireless, interface connecting the first and second router devices (100, 160) via corresponding wireless interfaces of the mobile device such that the first router device and the second router device are connected indirectly to each other, - and likewise constituting an alternative data transmission path compared to the first router device using the first, wireline, interface as data transmission path with the fixed network part -, -- in a first step, communication data are exchanged between the fixed network part and the first router device using the first, wireline, interface as the data transmission path, -- in a second step, further communication data are exchanged using the alternative data transmission path, either in addition to using the data transmission path or instead of using the data transmission path, between the fixed network part and the first router device - via the second router device - using -- either the third, wireline, interface and the second, wireless, interface, -- or using the third, wireline, interface, the second, wireless, interface, and the fourth, wireless, interface via the mobile device. -- either the third, wireline, interface and the second, wireless, interface, -- or using the third, wireline, interface, the second, wireless, interface, and the fourth, wireless, interface via the mobile device.