1 / 13

March 24, 2011

Smartphones Can Assist Efficient Use of Network Resources. Ömer Mubarek Senior Member of Technical Staff Advanced Technology, Research in Motion, Ltd. March 24, 2011. Overview of Network Capacity Crunch. Average smartphone usage doubled in 2010. *

tyrell
Télécharger la présentation

March 24, 2011

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. Smartphones Can Assist Efficient Use of Network Resources Ömer Mubarek Senior Member of Technical Staff Advanced Technology, Research in Motion, Ltd. March 24, 2011

  2. Overview of Network Capacity Crunch • Average smartphone usage doubled in 2010.* • Global mobile data traffic will increase 26-fold between 2010 and 2015.* • Mobile video traffic will exceed 50% of total mobile data traffic in 2011 reaching two-thirds by 2015.* • Video user consumes 15 times more bandwidth compared to web user.** • A high-def YouTube video at 2Mbps: as much bandwidth as 200 voice calls.** • YouTube videos delivered to mobile devices tripled in 2010, reaching 200 Million views per day.* • AT&T reports 30-fold growth in traffic from 3Q 2009 to 3Q 2010. Telecom Italia 15-fold from 2007 to 2010.* • Sources: * Cisco Visual Networking Index: Global Mobile Data Traffic Forecast Update, 2010 - 2015 ** Mobile Broadband Capacity Constraints and the Need for Optimization, Rysavy Research

  3. Capacity Will Run Out Soon Note – Data are based on an operator’s busy market Source: Mobile Broadband Capacity Constraints and the Need for Optimization, Rysavy Research

  4. Strategies • Extensive Methods • Introduction of new spectrum • New cell sites / spectrum reuse • Offloading data to WiFi and Femtocells • New technologies which are spectrally more efficient than current ones (WiMax , LTE and Evolved EDGE) • Intensive Method –Efficient use of capacity • Handsets can assist • Lower network cost • Greater number of users supported in the same amount of spectrum • Lower monthly bills for usage-based models • Reduced radio resources signaling between handset and network

  5. RIM Infrastructure Optimizations • Utilization of highly optimized protocols and methods of compression, trans-coding and rendering • Benefits for carriers from spectral efficiencies: • better capacity utilization • reduced capital expenditure requirements on wireless infrastructure, • For the end customer, spectral efficiency can result in • reduced latency, • better battery life, and • lower-cost data plans and roaming charges • Sample comparison results from two experiments for e-mail and web

  6. E-Mail Efficiency Superior text compression algorithms twice as efficient as common approaches as GZIP x1.9 x8.8 x1.7 x5.9 x9.6 x8.4 Efficient file viewers user can view only portions of the file without downloading the whole file x1.5 x1.5 Comparison with competition Text only: up to 9.6 times w/ Image: up to 8.8 times w/ PDF: up to 1.9 times x6.3 x6.2 x8.3 x7.2

  7. Web Efficiency • Includes Web browsing as well as 3rd Party apps (Facebook, Twitter, etc) • Advanced image compression algorithms: more efficient than JPEG and GIF image compression • Device type-specific trans-coding • Users can specify image quality – original image quality is unnecessarily high in many cases BB x 1.5 BB x 1.8

  8. Video Trans-coding • Smartphone screen resolution is smaller than a monitor • If transmitted video resolution is higher than device display resolution, the extra bytes are wasted • Appropriate trans-coding adjusted to device screen improve efficiency dramatically. Handheld requires only this much for the same user experience Content designed for PC monitor Rest of the transmitted bytes are wasted

  9. Using Technology with higher Spectral Efficiency • LTE • Infrastructure upgrade to LTE  LTE capable handsets • [Spectral Efficiency]LTE ≈ 2 x [Spectral Efficiency]HSPA or EVDO • EvolvedEDGE • Increased spectral efficiency using higher order modulations • [Spectral Efficiency]EGPRS2-A ≈ 1.7 x [Spectral Efficiency]EDGE • DL throughput further improved - doubled - by introducing a second receiver on the device

  10. 3G/4G Network with Complementary 2.xG Support • There are today > 4B GSM/EDGE users worldwide • approximately 0.5B WCDMA/HSPA users • Even in mature 3G networks it is not cost-effective to provide coverage outside urban centers • EDGE/Evolved EDGE needed for low cost service continuity • Purple = GSM/EDGE • Yellow = WCDMA/HSPA • Source: Map from GSMA (2009)

  11. Why Does RIM Pursue Evolved EDGE? • Seamless fallbackfrom 3G to 2G • Introduced in Rel 7 of 3GPP – most recent 2G technology • Complementary to 3G – not a competitor Seamless fallback from 3G to 2.5G Throughput GPRS EvolvedEDGE EDGE 3G / 4G

  12. Summary • Network operators are working hard to increase capacity to match highly growing demand for mobile data • Handsets can assist networks by using the available resources more efficiently • Aggressive compression and trans-coding algorithms can reduce network resource consumption dramatically while delivering same user experience. • It is essential to use high spectral efficiency technologies both for 4G as well as 2G • Network efficiency is further increased by reducing radio resources signaling between handset and network.

  13. THANK YOU

More Related