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HSDPA Performance in a Mixed Traffic Network

2008; Institute of Electrical and Electronics Engineers; Linguagem: Inglês

10.1109/vetecs.2008.462

2577-2465

Martin Wrulich, Werner Weiler, Markus Rupp,

Advanced Wireless Communication Techniques

One of the advantages in an existing WCDMA network is that HSDPA (high speed downlink packet access) can be operated within an existing Release 4 (Release '99) 5 MHz band, thus allowing for sharing the power amplifier and spreading codes at the Node-B between the HS-DSCH (high speed downlink shared channel) and the Release 4 downlink channels (DCHs). In this paper, we investigate the throughput performance of HSDPA in a network, in which also Release 4 traffic is present by utilizing a system level modeling of the HSDPA transmission if a Rake receiver is used, together with a coarse modeling of the Release 4 performance. By numerical simulations, we are able to deduce the optimum power split between HSDPA and Release 4 to maximize the overall cell throughput. The obtained results offer a more sophisticated understanding of the HSDPA network performance, and can be used by network operators for cell operation planning.