1 / 10

Service Differentiation in Multi-Rate HSDPA Systems

Service Differentiation in Multi-Rate HSDPA Systems. Hongxia Sun and Carey Williamson Department of Computer Science University of Calgary. Good. Fast. Cheap. Motivation (1 of 2). Hungry? Need food? You can ’ t always get everything you want! A classic tradeoff!. QoS. Thruput.

nituna
Download Presentation

Service Differentiation in Multi-Rate HSDPA Systems

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Service Differentiation in Multi-Rate HSDPA Systems Hongxia Sun and Carey Williamson Department of Computer Science University of Calgary IEEE MASCOTS 2009

  2. Good Fast Cheap Motivation (1 of 2) • Hungry? Need food? • You can’t always get everything you want! • A classic tradeoff! IEEE MASCOTS 2009

  3. QoS Thruput Fairness Motivation (2 of 2) • Mobile? Need Internet? • You can’t always get everything you want! • Another classic tradeoff! IEEE MASCOTS 2009

  4. Synopsis of Paper • High-Speed Downlink Packet Access (HSDPA) • Multi-rate high-speed cellular data networking • Problem formulation; iterative greedy solution • Detailed simulation model • Application-layer HTTP traffic model • TCP-like transport layer flow control • HSDPA network model with wireless channels • PF, Global PF, Dynamic GPF, Weighted GPF • Throughput, fairness, or QoS? You decide. IEEE MASCOTS 2009

  5. Codes/Users t HSDPA System Model • High-speed downlink shared channel • Multi-code multiplexing of different users • Maximum number of codes per TTI: 15 • Maximum number of users per TTI: 4 IEEE MASCOTS 2009

  6. SINR Frame Size (bits) Highest Rate (kbps) Num codes Max retrans SINR Frame Size (bits) Highest Rate (kbps) Num codes Max retrans -2.8063 137 68.5 1 4 … … … … … -2.3689 173 86.5 1 4 10.5316 2583 1291.5 4 1 -1.6615 233 116.5 1 4 11.1312 3319 1659.5 5 1 -0.7159 317 158.5 1 4 11.3274 3565 1782.5 5 1 -0.0715 377 188.5 1 4 12.1818 4189 2094.5 5 1 0.7881 461 230.5 1 4 13.5128 4664 2332 5 1 2.5483 650 325 2 4 14.5267 5287 2643.5 5 1 3.7207 792 396 2 4 15.5032 5887 2943.5 5 1 4.7511 931 465.5 2 4 16.5887 6554 3277 5 1 6.7787 1262 631 3 4 17.588 7168 3584 5 1 7.8335 1483 741.5 3 4 18.5 9719 4860 7 1 8.8074 1742 871 3 1 19.5 11418 5709 8 1 10.1075 2279 1139.5 4 1 20.5 14411 7206 10 1 Transmission Rate Formats IEEE MASCOTS 2009

  7. Simulation Model • System: 3-sectored host cell (19 total) • Wireless channel: log-normal fading • User mobility model: random waypoint • Scheduler: PF, GPF, DGPF, WGPF • Traffic model: HTTP with four-level hierarchical structure (e.g., session, packet-call, object, and packet) • Two user priority classes (A and B) IEEE MASCOTS 2009

  8. HTTP traffic arrival control (by TCP) Codes/Users HTTP traffic flow t {Num_user, Num_codes} Scheduler {R_tti} FER retransmit Scheduling Algorithm HTTP traffic flow UE channel situation Simulator Overview IEEE MASCOTS 2009

  9. Example Results (Figure 4) IEEE MASCOTS 2009

  10. Summary • High-Speed Downlink Packet Access (HSDPA) • Multi-rate high-speed cellular data networking • Built detailed HSDPA simulation model • Application-layer HTTP traffic model • TCP-like transport layer flow control • HSDPA wireless cellular network model • PF, GPF, DGPF, and WGPF schedulers • DGPF is promising, but... • Throughput, fairness, or QoS? Your choice. IEEE MASCOTS 2009

More Related