Cross-layer scheduling strategy for UMTS downlink enhancement |
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Authors: | Ferrus R. Alonso L. Umbert A. Reves X. Perez-Romero J. Casadevall F. |
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Affiliation: | Catalonia Tech. Univ., Spain; |
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Abstract: | This article describes the benefits of including cross-layer information in the scheduling mechanism of a UMTS downlink channel. In particular, the information obtained from the fast power control algorithm is used to properly schedule transmissions. A prioritization function that exploits the short-term channel variations is proposed. This strategy is shown to be a feasible approach to improve system performance in terms of capacity and delay. This enhancement is obtained as a benefit of intrinsic multi-user diversity. The proposal is applicable within the current UMTS radio resource management framework. |
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