|By Joe Zeto||
|July 18, 2012 01:51 PM EDT||
Consumers are continuing to adopt multiple connected devices and video content is expected to reach more than 70 percent of global traffic. This growth and the increased reliance on wireless networks is putting stress on existing 802.11a/b/g/n networks. As a result of this high usage, users are likely to experience deteriorated performance, choppy videos and slower load times. At a time when IT managers report that network users are now averaging more than one Wi-Fi connected device per person, solutions to handle the rapid growth of devices are at a premium.
The next generation of the 802.11 standard, or IEEE 802.11ac, promises to finally break the wireless Ethernet gigabit barrier. This technology will deliver higher bandwidth while retaining better quality of experience (QoE) for end users, and is expected to be adopted rapidly into all markets: residential, enterprise, carrier and large venue.
Some of the first applications for 802.11ac's faster speeds will better residential video streaming, data syncing between mobile devices, and data backup. Streaming digital media between devices faster and simultaneously connecting more wireless devices will be some of the starting benefits for consumers and enterprises. In terms of service providers, they will be able to deploy the new technology to offload traffic from congested 3G and 4G-LTE cellular networks, and in dense operator hotspots 802.11ac will supply better performance to more users.
To date, all 802.11 revisions have focused on increasing transport speeds, which lead to higher traffic delivery rates and ultimately to faster response times as experienced by the end user. The introduction of 802.11n brought advances of MIMO (multiple-in, multiple-out) to deliver traffic over multiple spatial streams, and packet aggregation. MIMO delivered marked improvements in physical transport rates, enabling more bits per second to be transmitted than ever before over Wi-Fi. Packet aggregation delivered equally impressive improvements in transport experience, allowing devices to send more data once they had gained access to the wireless media. The new 802.11ac protocol is continuing down this path by preserving aggregation techniques, advancing the physical transport rates yet again, and introducing the concept of parallel transport into Wi-Fi through a technique known as Multi-User MIMO (MU-MIMO), where multiple client devices are receiving packets concurrently.
This is the first time Wi-Fi history that directed traffic can be delivered to multiple client devices at the same time. This ability has significant impact on delivery of content to any location with multiple users, especially where content is revenue-generating or critical.
Achieving Increased Gigabit+ Performance with 802.11ac
In order to reach the best performance, 802.11ac uses a variety of advancements and addresses the need for performance improvement through three primary initiatives:
- Increasing Raw Bandwidth allows for the higher speeds associated with 802.11ac. It makes use of a higher rate encoding scheme known as 256-QAM, which transmits 33 percent more data than the 64-QAM used in the 802.11n standard. Signal-to-noise ratios that worked for 802.11n are no longer sufficient because the difference in detectable signal level is now significantly smaller.
- Multi-user Support makes 802.11ac a real information superhighway, unlike its predecessors that only allowed one device to transmit at a time. MU-MIMO allows an access point to transmit data to multiple client devices on the same channel at the same time. It works by directing some of the spatial streams to one client and other spatial streams to a second client. MU-MIMO is critical to performance improvements in environments with high client counts.
- Individual Client Channel Optimization is also a major performance booster. The concept behind channel optimization is transmit beamforming (TxBF). The reflections and attenuations, common during the transmission of 802.11 signals, have a significant performance impact on overall network performance. With TxBF, the access point communicates with the client devices to determine the types of impairment that are present in the environment. Then the access point "precodes" the transmitted frame with the inverse of the impairment such that when the next frame is transmitted and transformed by the medium, it is received as a clean frame by the client. Since no two clients are in the same location, TxBF needs to be applied on a client-by-client basis and constantly updated to reflect the changing environment.
Overcoming Technical Challenges
One of the biggest frustration for developers and users of 802.11 is that it needs to work with previous versions. It can also be extremely difficult to identify the root cause of development problems. For example, when an application performs poorly, it is often hard to determine if it is due to an environmental, client, or network issue. The various devices in an 802.11 network are highly correlated so an issue in one area quickly ripples through to many other areas. Developers have lacked an effective means to assess the total picture from the RF to the application layer.
IEEE 802.11ac makes this problem significantly more challenging. In addition to being deployed into an existing environment with ten years' worth of previous releases, 802.11ac makes use of advanced technologies that are substantially more complex and demanding than previous versions. This latest generation of 802.11 requires a rethinking of how the technology is developed and tested to include a much more holistic view through the product development life cycle.
Traditionally, the RF section is verified using one set of equipment, and then the upper layer functions are tested using a second set of tools. The overall technical complexity and the introduction of new technologies such as TxBF demand coordination and control between the different layers of the protocol stack. Without this coordination, it would be difficult to utilize these functions and to quickly pinpoint performance issues.
802.11ac brings the promise of moving Wi-Fi into the limelight as a trusted and capable communication protocol, and will require equipment and rigor to match. The new generation of testing should be able to decode every frame in real-time and determine each frame's RF characteristics, as well as their frame-level performance, and generate every frame without limitation in real-time to adequately test receiver performance. Previous approaches use a digitized data record approach for both generation and analysis, creating or capturing what are known as I/Q files, and equipment typically adapted from the general-purpose RF domain. This result in equipment being capable of a single spatial stream, and able to generate or capture a small fraction of the frames required to perform testing. To meet the need, the approach needs to be able to generate and analyze all frames in real-time to the limit of the specification, tightly integrate RF and MAC functionality in 802.11ac, and include integral, real-time channel emulation to address TxBF performance.
Increasing Performance for All Markets
Gigabit+ performance for residential, enterprise, carrier and large venue markets is possible with the 802.11ac standard. But to realize the performance and density promise, chip and hardware developers must navigate some significant technical challenges, as detailed in this article. They must ensure graceful migrations from existing deployed solutions by providing backward compatibility and delivering high performance RF transmission and receive performance with a wide variety of signals. They must maintain high performance to multiple clients under the channel conditions that will exist in real deployments, while at the same time provide the high reliability and feature robustness to enable enterprise and carrier grade 802.11 adoption. Ultimately, the developers need to ensure that the key application traffic - most notably video - can be delivered with quality.
Dave will share his insights on how Internet of Things for Enterprises are transforming and making more productive and efficient operations and maintenance (O&M) procedures in the cleantech industry and beyond. Speaker Bio: Dave Landa is chief operating officer of Cybozu Corp (kintone US). Based in the San Francisco Bay Area, Dave has been on the forefront of the Cloud revolution driving strategic business development on the executive teams of multiple leading Software as a Services (SaaS) application providers dating back to 2004. Cybozu's kintone.com is a leading global BYOA (Build Your O...
Apr. 19, 2015 08:30 PM EDT Reads: 781
Health care systems across the globe are under enormous strain, as facilities reach capacity and costs continue to rise. M2M and the Internet of Things have the potential to transform the industry through connected health solutions that can make care more efficient while reducing costs. In fact, Vodafone's annual M2M Barometer Report forecasts M2M applications rising to 57 percent in health care and life sciences by 2016. Lively is one of Vodafone's health care partners, whose solutions enable older adults to live independent lives while staying connected to loved ones. M2M will continue to gr...
Apr. 19, 2015 08:00 PM EDT Reads: 850
With IoT exploding, massive data will transform businesses with opportunities to monetize almost anything that can be measured. In this C-Level Roundtable Discussion at @ThingsExpo, Brendan O’Brien, Aria Systems Co-founder and Chief Evangelist, will lead an expert panel of consultants, thought leaders and practitioners who will look at these new monetization trends, discuss the implications, and detail lessons learned from their collective experience. Finally, the panel will point the way forward for enterprises who wish to leverage the resulting complex recurring revenue models, adding valu...
Apr. 19, 2015 05:00 PM EDT Reads: 1,461
How is unified communications transforming the way businesses operate? In his session at WebRTC Summit, Arvind Rangarajan, Director of Product Marketing at BroadSoft, will discuss how to extend unified communications experience outside the enterprise through WebRTC. He will also review use cases across different industry verticals. Arvind Rangarajan is Director, Product Marketing at BroadSoft. He has over 19 years of experience in the telecommunications industry in various roles such as Software Development, Product Management and Product Marketing, applied across Wireless, Unified Communic...
Apr. 19, 2015 04:00 PM EDT Reads: 1,607
SYS-CON Events announced today that Vicom Computer Services, Inc., a provider of technology and service solutions, will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. They are located at booth #427. Vicom Computer Services, Inc. is a progressive leader in the technology industry for over 30 years. Headquartered in the NY Metropolitan area. Vicom provides products and services based on today’s requirements around Unified Networks, Cloud Computing strategies, Virtualization around Software defined Data Ce...
Apr. 19, 2015 02:00 PM EDT Reads: 1,438
What exactly is a cognitive application? In her session at 16th Cloud Expo, Ashley Hathaway, Product Manager at IBM Watson, will look at the services being offered by the IBM Watson Developer Cloud and what that means for developers and Big Data. She'll explore how IBM Watson and its partnerships will continue to grow and help define what it means to be a cognitive service, as well as take a look at the offerings on Bluemix. She will also check out how Watson and the Alchemy API team up to offer disruptive APIs to developers.
Apr. 19, 2015 12:00 PM EDT Reads: 1,506
The IoT Bootcamp is coming to Cloud Expo | @ThingsExpo on June 9-10 at the Javits Center in New York. Instructor. Registration is now available at http://iotbootcamp.sys-con.com/ Instructor Janakiram MSV previously taught the famously successful Multi-Cloud Bootcamp at Cloud Expo | @ThingsExpo in November in Santa Clara. Now he is expanding the focus to Janakiram is the founder and CTO of Get Cloud Ready Consulting, a niche Cloud Migration and Cloud Operations firm that recently got acquired by Aditi Technologies. He is a Microsoft Regional Director for Hyderabad, India, and one of the f...
Apr. 19, 2015 12:00 PM EDT Reads: 1,126
The 17th International Cloud Expo has announced that its Call for Papers is open. 17th International Cloud Expo, to be held November 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA, brings together Cloud Computing, APM, APIs, Microservices, Security, Big Data, Internet of Things, DevOps and WebRTC to one location. With cloud computing driving a higher percentage of enterprise IT budgets every year, it becomes increasingly important to plant your flag in this fast-expanding business opportunity. Submit your speaking proposal today!
Apr. 19, 2015 12:00 PM EDT Reads: 2,101
SYS-CON Events announced today that SoftLayer, an IBM company, has been named “Gold Sponsor” of SYS-CON's 16th International Cloud Expo®, which will take place June 9-11, 2015 at the Javits Center in New York City, NY, and the 17th International Cloud Expo®, which will take place November 3–5, 2015 at the Santa Clara Convention Center in Santa Clara, CA. SoftLayer operates a global cloud infrastructure platform built for Internet scale. With a global footprint of data centers and network points of presence, SoftLayer provides infrastructure as a service to leading-edge customers ranging from ...
Apr. 19, 2015 08:45 AM EDT Reads: 2,432
SYS-CON Events announced today that Cisco, the worldwide leader in IT that transforms how people connect, communicate and collaborate, has been named “Gold Sponsor” of SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. Cisco makes amazing things happen by connecting the unconnected. Cisco has shaped the future of the Internet by becoming the worldwide leader in transforming how people connect, communicate and collaborate. Cisco and our partners are building the platform for the Internet of Everything by connecting the...
Apr. 19, 2015 08:30 AM EDT Reads: 5,639
SYS-CON Events announced today that Liaison Technologies, a leading provider of data management and integration cloud services and solutions, has been named "Silver Sponsor" of SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York, NY. Liaison Technologies is a recognized market leader in providing cloud-enabled data integration and data management solutions to break down complex information barriers, enabling enterprises to make smarter decisions, faster.
Apr. 19, 2015 08:15 AM EDT Reads: 3,719
SYS-CON Events announced today that Windstream, a leading provider of advanced network and cloud communications, has been named “Silver Sponsor” of SYS-CON's 16th International Cloud Expo®, which will take place on June 9–11, 2015, at the Javits Center in New York, NY. Windstream (Nasdaq: WIN), a FORTUNE 500 and S&P 500 company, is a leading provider of advanced network communications, including cloud computing and managed services, to businesses nationwide. The company also offers broadband, phone and digital TV services to consumers primarily in rural areas.
Apr. 19, 2015 08:00 AM EDT Reads: 4,903
SYS-CON Events announced today that Ciqada will exhibit at SYS-CON's @ThingsExpo, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. Ciqada™ makes it easy to connect your products to the Internet. By integrating key components - hardware, servers, dashboards, and mobile apps - into an easy-to-use, configurable system, your products can quickly and securely join the internet of things. With remote monitoring, control, and alert messaging capability, you will meet your customers' needs of tomorrow - today! Ciqada. Let your products take flight. For more inform...
Apr. 19, 2015 08:00 AM EDT Reads: 1,643
SYS-CON Events announced today that ProfitBricks, the provider of painless cloud infrastructure, will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY., and the 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. ProfitBricks is the IaaS provider that offers a painless cloud experience for all IT users, with no learning curve. ProfitBricks boasts flexible cloud servers and networking, an integrated Data Center Designer tool f...
Apr. 19, 2015 07:30 AM EDT Reads: 1,517
SYS-CON Events announced today that Dyn, the worldwide leader in Internet Performance, will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. Dyn is a cloud-based Internet Performance company. Dyn helps companies monitor, control, and optimize online infrastructure for an exceptional end-user experience. Through a world-class network and unrivaled, objective intelligence into Internet conditions, Dyn ensures traffic gets delivered faster, safer, and more reliably than ever.
Apr. 19, 2015 07:00 AM EDT Reads: 2,344
SYS-CON Events announced today that GENBAND, a leading developer of real time communications software solutions, has been named “Silver Sponsor” of SYS-CON's WebRTC Summit, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. The GENBAND team will be on hand to demonstrate their newest product, Kandy. Kandy is a communications Platform-as-a-Service (PaaS) that enables companies to seamlessly integrate more human communications into their Web and mobile applications - creating more engaging experiences for their customers and boosting collaboration and productiv...
Apr. 19, 2015 07:00 AM EDT Reads: 2,310
SYS-CON Events announced today that Open Data Centers (ODC), a carrier-neutral colocation provider, will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place June 9-11, 2015, at the Javits Center in New York City, NY. Open Data Centers is a carrier-neutral data center operator in New Jersey and New York City offering alternative connectivity options for carriers, service providers and enterprise customers.
Apr. 19, 2015 06:45 AM EDT Reads: 2,561
SYS-CON Events announced today that On the Avenue Marketing Group, a sales and marketing firm that utilizes events to market and sell products to consumers, will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. On the Avenue Marketing Group (OTA) is a sales and marketing firm that utilizes events to market and sell products to consumers. On behalf of our clients, we attend thousands of fairs, festivals, expos, concerts, conferences, and sporting events annually, helping them reach millions of individuals ...
Apr. 19, 2015 06:30 AM EDT Reads: 3,189
SYS-CON Events announced today that BroadSoft, the leading global provider of Unified Communications and Collaboration (UCC) services to operators worldwide, has been named “Gold Sponsor” of SYS-CON's WebRTC Summit, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. BroadSoft is the leading provider of software and services that enable mobile, fixed-line and cable service providers to offer Unified Communications over their Internet Protocol networks. The Company’s core communications platform enables the delivery of a range of enterprise and consumer calling...
Apr. 19, 2015 06:30 AM EDT Reads: 2,218
SYS-CON Events announced today that ActiveState, the leading independent Cloud Foundry and Docker-based PaaS provider, has been named “Silver Sponsor” of SYS-CON's DevOps Summit New York, which will take place June 9-11, 2015, at the Javits Center in New York City, NY. ActiveState believes that enterprises gain a competitive advantage when they are able to quickly create, deploy and efficiently manage software solutions that immediately create business value, but they face many challenges that prevent them from doing so. The Company is uniquely positioned to help address these challenges thro...
Apr. 19, 2015 06:15 AM EDT Reads: 2,808