Abstract:

According to the characteristic of parallel data transmission of OFDM (Orthogonal Frequency Division Multiplexing) and the feature of multiuser communications in wireless networks, a novel wireless IP packets scheduling algorithm for multiservice in OFDM system (AS-OFDM) is presented based on the idea of cross-layer design. The proposed algorithm implements the radio resource management and adaptive packets scheduling via exchanging the information among the network layer, link layer and physical layer. The simulation results show that the proposed algorithm can make use of the radio resource and guarantee the fairness among the users with same QoS requirement more effectively than the traditional IP packets scheduling algorithm in the condition that the QoS of different service has to be guaranteed.

Key words: wireless IP, QoS, scheduling, OFDM, cross-layer design