Title :
A Cross-Layer Design for Downlink Scheduling in SDMA Packet Access Networks
Author :
Xinghua, Song ; Nan, Hu ; Zhiqiang, He ; Kai, Niu ; Xiaoxiang, Wang ; Weiling, Wu
Author_Institution :
Sch. of Inf. Eng., Beijing Univ. of Posts & Telecommun.
Abstract :
This paper deals with the problem of downlink scheduling in SDMA packet access networks. The performance of the SDMA system is predominantly affected by the mutual interference between users. In order to ensure the quality of service (QoS) and enhance the resource utilization, the scheduler needs to jointly consider the constraints from the physical layer (spatial separability for instance) and the data link layer (such as QoS requirements). In this paper, we propose a simple cross-layer downlink scheduler for SDMA based systems. As an example, it is implemented on an OFDMA/SDMA system. Analysis and simulations are given to show the effectiveness of our proposal.
Keywords :
frequency division multiple access; quality of service; radio links; scheduling; space division multiple access; OFDMA; QoS; SDMA packet access networks; cross-layer design; downlink scheduling; mutual interference; quality of service; resource utilization; Analytical models; Base stations; Cross layer design; Downlink; Multiaccess communication; Quality of service; Resource management; Scheduling; Signal to noise ratio; Throughput;
Conference_Titel :
Vehicular Technology Conference, 2007. VTC2007-Spring. IEEE 65th
Conference_Location :
Dublin
Print_ISBN :
1-4244-0266-2
DOI :
10.1109/VETECS.2007.217