METHODS FOR MANAGING THE BAND ADAPTIVE MODULATION AND CODING (BAND AMC) IN PORTABLE INTERNET SYSTEM

摘要

The present invention relates to a band adaptive modulation and coding (Band AMC) management method for use in a portable Internet system. According to an embodiment of the present invention, the Band AMC method includes; a) a terminal transmitting a response message (REP-RSP) including a Band AMC allocation request to a base station; b) inserting sub¬ channel index information in a sub-channel mode field of a downlink/uplink MAP (DL/UL MAP) when the base station set the terminal to be operated in Band AMC mode; c) the terminal receiving a radio signal including sub-channel index information from the base station; and d) the terminal operating in the Band AMC mode with reference to sub-channel index. A mobile terminal operating in the Band AMC mode can change a previously allocated sub-channel, and mobile subscriber can communicate continuously in Band AMC mode. In addition, efficiency of the Band AMC management may be increased in the portable Internet system of IEEE 802.16 standard.