METHOD AND APPARATUS FOR DATA TRANSPORTATION AND SYNCHRONIZATION BETWEEN MAC AND PHYSICAL LAYERS IN A WIRELESS COMMUNICATION SYSTEM

摘要

The present invention is a novel method and apparatus for efficiently transporting and synchronizing data between the Media Access Control (MAC) a nd physical communication protocol layers in a wireless communication system. Depending on the length of the MAC packet to be transported, the present invention either fragments or concatenates the MAC packet when mapping to th e physical layer. When a MAC packet is too long to fit in one TC/PHY packet, t he MAC packet is fragmented and the resultant multiple TC/PHY packets are preferably transmitted back-to-back within the same TDD frame. When a MAC packet is shorter than a TC/PHY packet, the next MAC packet is concatenated with the current MAC packet into a single TC/PHY packet unless an exception applies (e.g., a change in CPE on the uplink or a change in modulation on th e downlink). When an exception applies, the next MAC packet is started on a ne w TC/PHY packet following either a CTG or MTG.