1 / 16

Triple Play Services over Mobile WiMAX

Triple Play Services over Mobile WiMAX. Raj Jain Washington University in Saint Louis Saint Louis, MO 63130 Jain@cse.wustl.edu Presented at MWG Meeting, Athens, April 29, 2008 These slides are available on-line at: http://www.cse.wustl.edu/~jain/wimax/3play.htm. TexPoint fonts used in EMF.

elinor
Download Presentation

Triple Play Services over Mobile WiMAX

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. Triple Play Services over Mobile WiMAX Raj Jain Washington University in Saint LouisSaint Louis, MO 63130Jain@cse.wustl.edu Presented at MWG Meeting, Athens, April 29, 2008 These slides are available on-line at: http://www.cse.wustl.edu/~jain/wimax/3play.htm TexPoint fonts used in EMF. Read the TexPoint manual before you delete this box.: A

  2. Contributors • Kemal Ozdemir, Francis Retnasothie, Logus Broadband Wireless • Raj Jain, Chakchai So-In, Washington University in St. Louis • Shyam Parekh, Alcatel-Lucent • Alan Moskowitz, MobiTV • Krishna Ramadas, Venturi Wireless • Mano Vafai, Wichorus Service Providers, Equipment Vendors, Academic Institution Team

  3. Overview • Triple Play: What and Why? • Protocol Model and Parameters • Factors Affecting Capacity • Capacity Estimation

  4. Why Triple Play? • Three Key Mobile Services: • Voice, Video, and Internet • Video and entertainment are key to future growth of broadband – key revenue generators • Legacy mobile technologies, designed for voice, have difficulty managing video workload • WiMAX Operators need analytical data to plan their capacity and justify their investments

  5. Protocol Stack 12B8B20B14B

  6. System Parameters • Channel width: 10 MHz • OFDMA Frame Size: 5 ms • Duplexing: TDD • DL:UL Ratio = 2:1 • Subchannelization: PUSC

  7. Factors Affecting Capacity • Location: Terrain, foliage, buildings Þ Signal to interference and noise ratio (SINR) Þ Modulation and coding schemes • Urban/Sub-urban/Rural Regions: • Urban Þ Higher capacity • Rural Þ Longer reach • Suburban • Mobile Speed: High speed Þ Doppler shift Þ Inter-carrier interference Þ Lower MCSs

  8. Factors Affecting Capacity (Cont) • Frequency Band: • Lower frequencies have longer reach • 700 MHz provides provides larger coverage area than 2.5 GHz Þ Good for rural deployments • Lower frequencies require larger antenna and antenna spacing Þ MIMO difficult • Lower frequencies Þ Smaller channel width • Handoffs: 50 ms for real time applications, 3-10 seconds for non-real-time

  9. Factors Affecting Capacity (Cont) • Scheduling • Key to WiMAX performance and QoS • Vendor specific • Aggregating small payloads can increase the capacity by an order of magnitude • Header compression: • Robust Header Compression (RoHC) • Header suppression • Silence suppression • ARQ/HARQ

  10. Effect of Scheduler • Proper aggregation and scheduling can increase the performance by an order of magnitude SimpleScheduler EnhancedScheduler

  11. VOIP Capacity • Limited by UL capacity

  12. Video Displays 42” 16x9 SDTV (1 Mbps) 26” 4x3 SDTV (850 kbps) Laptop (700-800 kbps) Palmtop (324 kbps)

  13. Mobile TV • H.264 MPEG-4

  14. Internet Data Access • 3GPP HTTP workload

  15. Summary • WiMAX systems provide a good performance on Voice, Video, and Data • Voice traffic generates small packets. 10X performance with Aggregation and scheduling • Video throughput distinguishes WiMAX from other legacy mobile networking technologies

  16. References • WiMAX Forum White paper, “Triple Play Services including Mobile TV, VoIP, and Internet over Mobile WiMAX Networks,” April 2008. • C. So-In, R. Jain, A. Tamimi, “Capacity Estimation of IEEE 802.16e Mobile WiMAX Networks,” Submitted to IEEE Communications Magazine, April 2008. • C. So-In, R. Jain, A. Tamimi,“Seasonal ARIMA Models of Video Traffic for Mobile WiMAX and Other Wireless Broadband Access Technologies,” Submitted to ACM Multimedia 2008 conference, April 2008.

More Related