MULTIPLEXING FOR A MULTI-CARRIER CELLULAR COMMUNICATION SYSTEM

摘要

An apparatus in a communication system comprises means for determining L sets of traffic channels to use for U terminals selected for data transmission to a base station where L is greater than one and U is one or greater and means for assigning the U terminals with the traffic channels in the L sets. Each set includes multiple traffic channels that are orthogonal to one another, and the traffic channels in each set are not orthogonal to the traffic channels in each of the L-1 other sets. Each traffic channel is associated with one or more frequency subbands to use for data transmission in each transmission interval, and wherein data transmissions for the U terminals are sent using the traffic channels assigned to the U terminals. An apparatus in a communication system comprises means for obtaining a traffic channel to use for data transmission and means for mapping data modulation symbols onto the one or more frequency subbands belonging to the traffic channels. The traffic channel is selected from among L sets of traffic channels for a base station where L is greater than one and each set includes multiple traffic channels that are orthogonal to one another. The traffic channels in each set are not orthogonal to the traffic channels in each of the L-1 other sets, and the traffic channel is associated with one or more frequency subbands to use for data transmission in each transmission interval. The means for obtaining a traffic channel is a controller and the means for mapping data modulation symbols is a mapping unit. The apparatus can be either a terminal or a base station.