A radio base station comprises an antenna ; a first power amplifier configured to receive a first carrier signal; a second power amplifier configured to receive a second carrier signal; and an imbalanced combiner. The method includes configuring a first service manager to send a first request to a forwarding agent for packets meeting a first criteria and sending the first request to the forwarding agent. The method may include selecting a function based on the predetermined motion and triggering the function. The trailer is also defined as being extendable in width as well as the length.