A wireless communication system and its method of operation are disclosed. The wireless communication system comprises a subscriber system and a base station system. The subscriber system transfers a request for a communication service comprising a voice communication or web browsing. The base station system receives the request and receives traffic information for the wireless communication system. The base station selects a frame format for packets for the requested communication service based on the delivery requirements of the requested communication service and based on the traffic information. The base station system transfers an instruction to the subscriber system indicating the selected frame format for the packets. The subscriber system exchanges the packets for the requested communication service using the selected frame format with the base station system over a wireless communication link. The base station system exchanges the packets with a telephony network system or an internet system.