This talk covers the current trend of mobile applications and future directions about mobile network architecture. Back-up slides describe an interesting all-IP network architecture discussion.
The presentation firstly summarizes the current progress of mobile multimedia applications in Japan’s broadband cellular environment, which offers Mbps-order flat rate always-on packet connections. That wireless broadband is one of killer application enablers, and the enabler makes music download and video clip delivery very popular among the young general population. The enabler, the wireless broadband, also has another potential for expansion to include “fixed-line” Internet applications such as video clips, music content download, VoIP, graphical SNS, and Ajax-enabled web browsing. In addition to “wireless broadband as key enabler” discussion, the presentation covers mobile specific aspects so as to lead the audience to new service discussions in the mobile multimedia area, mobile advertisement and e-commerce. The mobile infrastructure has brought a highly-personalized popular communication culture that was never seen before. When looking forward the next five years, we may have a different story, where mobile network QoS is catching up and cell-phone is becoming an information hub in our daily life. Many cellphones are now being equipped with many I/O devices. Captured environment with motion sensor, GPS, health care devices, microphones, and CCD cameras may interact with application servers via Internet. Thus content delivery, interaction with contents, and e-commerce are going to be associated with real environments that will bring us context-aware capability. That peripheral enhancement will be an extremely fertile incubation environment for new and innovative killer applications. That definitely differentiates mobile Internet from fixed-line Internet. Several examples are selected from the above areas for presentation.
Advances in Wireless Video Delivery (IE recommended) presented at Mobile Video Workshop, Co-located ACM MM2007, Sept. 28th 2007
We review practical video delivery technologies through the examination of existing mobile networks, commercialized or standardized transport, and coding technologies. Compression efficiency, power dissipation, and error control are identified as intrinsic issues in wireless video delivery. We point out that layer-1/2 transport tends to provide two distinct conditions: quasi-error-free and burst errors during fading periods. In the former condition, upper layer error control technologies have a limited role. When considering these role, extraordinary adaptability of error control to the latter condition is essential. We also see that the emerging mobile network QoS is going to have a larger variation of bandwidth and delay. Thus, we identify rate control as the essential technology that provides extraordinary adaptability to varying bandwidth. Cross-layer optimization and rapid feedback-based source coder control with error concealment, specifically for that rate control, are frontiers to be investigated.
Insights into Future Mobile Applications beyond 3G (IE recommended) presented at Distinguished Lecture for HKUST Dual Degree Program in Technology and Management, Feb. 1, 2008
This is a revised version of Keynote at ACM Multimedia 2007. The content is distilled from it and fully revised for this lecture by highliting innovation ascpects in mobile communication segments. The added points are 1. more detailed power consumption discussion 2. prospective 4G standards, 3GPP-LTE, UMB, and WiMAX 3. distributed speech recognition as Cellphone’s new IO, and 4. network media convergence discussion. When a killer application emerges, always there have been key technologies as the incubation environment that fosters that killer application. Business people can’t ignore this condition and contribution from innovative enginners. A set of supporting key technologies and their best combination is the key to innovate something new. This talk aims to give you hints to think about the future in that aspect. “Convergence” discussion follows as “just bundling different functionalities” won’t make a new value chain. I point out the importance of nonlinear combination that provides a synergy effect. We discuss network media convergence such as FMC, and conclude it.
This is a survey how cell-phones are interacting with a real world with I/O devices in information retrieval.
This talk conveys three major messages: 1.Emergence of cloud devices and its impact to communication culture among people, 2.Role of broadband wireless, especially of 3G Long Term Evolution (3G LTE) in the era of cloud devices, and 3.Operator’s imperatives to foster a new ecosystem with innovative content providers (CPs), e.g., Android Market participants.The concept of cloud computing is not far from Tim O’Reilly’s insight: Web 2.0 (see http://oreilly.com/web2/archive/what-is-web-20.html) . What is changing from the original web.2.0 concept is that data aggregation and integration over clouds is in full progress and those have reached to a critical stage for communication paradigm shift. You can see those examples in Google applications, Twitter, mobile SNSes, etc. (see also my blog article at http://micketoh.blogspot.com/2010/01/my-2010-r-plan-beyond-web-20-and-cloud.html) The 3G LTE technology will support such cloud devices in two years by providing a fat pipe with very low latency, say 10msec. Lessons learned from AT&T wireless' case in launching i-phones are reported and discussed so as to emphasize inevitable broadband wireless. As for the last message, operator’s imperatives, we point out operator’s customer base, with payment systems and customers’trusting data, leverages creating a new ecosystems in the cloud device era. Those imperatives are (a) providing service charging system, (b) customers’ data aggregation and its fair use, and (c) providing network APIs especially of location, presence and AAA, to CPs in the new ecosystem.