Title :
Dual Cell HSDPA System Benefits and User Experience Gains
Author :
Mohan, Siddharth ; Kapoor, Rohit ; Mohanty, Bibhu
Author_Institution :
Qualcomm Inc., San Diego, CA, USA
Abstract :
Dual Cell-High Speed Downlink Packet Access (DC-HSDPA), which was introduced in Release 8 of the WCDMA specifications, enables the User Equipment (UE) to receive downlink data on two adjacent carriers simultaneously. Previous papers, including [1] [2] have shown how the doubling of physical layer rate of DC-HSDPA UEs translates to user experience gain for real applications such as web browsing and video streaming in unloaded systems. In this paper, using a real prototype implementation, we focus on gains of DC-HSDPA over two carriers of Single Cell HSDPA (SC-HSDPA) in terms of number of additional supportable users. For a given user experience, we show how many more users DC-HSDPA can support compared to two carriers of SC-HSDPA; we show these results for the two applications, file download and web browsing. In addition, our results show the impact of the TCP Slow Start algorithm on the user experience gains of DC-HSDPA for the application of file download.
Keywords :
Internet; Web services; code division multiple access; video streaming; wavelength division multiplexing; DC-HSDPA; TCP slow start algorithm; WCDMA; dual cell HSDPA system; dual cell-high speed downlink packet access; file download; user equipment; user experience gains; video streaming; web browsing; Geometry; Google; Loading; Multiaccess communication; Prototypes; Spread spectrum communication; Transport protocols;
Conference_Titel :
Vehicular Technology Conference (VTC Fall), 2011 IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
978-1-4244-8328-0
DOI :
10.1109/VETECF.2011.6093251
