IP Media Monitor: WIRELESSIP - whitepapers

GSM/UMTS Networks

Thu, 01 Jan 1970 00:00:00

The paper presents how the GSM infrastructure is meant to evolve to support the introduction of 3G services and act as a base for UMTS deployment. In addition, the paper highlights some of the challenges that the operator is facing and how Nortel Networks is addressing them. As the handset is transforming from a simple voice device to a voice and video multimedia mini-computer, the GSM/EDGE access network is challenged to deliver more bits per second per Hertz in a reduced footprint.

Wireless Trend in the Americas: The Proliferation of GSM 850 MHz And Edge

Thu, 01 Jan 1970 00:00:00

This document will review and analyze the reasons behind GSM's extraordinary success in the Americas by highlighting the important role played by the introduction of GSM 850 MHz equipment. Furthermore, it will discuss the relevance of continuing the migration towards next generation networks and the role EDGE will play in the region. EDGE technology, available in four major international mobile spectrum concessions slots granted around the globe - 850, 900, 1800 and 1900 MHz - is well positioned to emulate, on a global scale, the success displayed by GSM in the Americas.

GSM for Rural and Regional Mobile Operators

Thu, 01 Jan 1970 00:00:00

This paper discusses the key issues and opportunities that rural and regional mobile operators should consider when transitioning from TDMA to GSM. It describes GSM's advanced voice and data capabilities, its 3G-migration path and how these characteristics make GSM/GPRS/EDGE the most attractive choice for TDMA operators.

Voice Capacity Enhancements for GSM Evolution to UMTS

Thu, 01 Jan 1970 00:00:00

GSM has proven itself as the most effective cellular technology worldwide, becoming the defacto standard with 438 GSM networks deployed in 157 countries. GSM provides global roaming, huge economies of scale, a clear migration path to next generation systems, and capabilities today that match or exceed competing technologies. Constant innovation of GSM technology has continually increased GSM voice capacity, and the evolution continues with both EDGE and UMTS/WCDMA providing significant new features and services. This paper describes some of the groundbreaking methods and enhancements used by the latest GSM that maximize capacity to greater than sixteen times AMPS today, and thirty-two times AMPS in the near future. It compares the results against TDMA, CDMA2000, and UMTS systems, and describes enhancements available with EDGE and UMTS.

End-to-End Functional Capability Test Specification for Inter-PLMN GPRS Roaming

Thu, 01 Jan 1970 00:00:00

This document is the specification of MoU-IREG End-to-end Functional Capability tests relating to the international roaming of a Mobile Station subscribed to GPRS services, belonging to a home PLMN (a), to and within a visited PLMN (b). Throughout this document, GPRS refers to as both GPRS Release '97/98 (i.e. 2.5G) and GPRS Release '99/UMTS (i.e. 3G). Also, if a roaming subscriber gains access to GPRS services through a GSM radio network (BSS) and a R99 SGSN then, in this case, VPLMN(b) is considered as a GPRS R97/98 network.

3G Convergence and Microwave Backhaul

Thu, 01 Jan 1970 00:00:00

The word "convergence" in the telecom industry means many different things to many different people. For wireless and wire-line carriers it means consolidating networks (converged) into a single network capable of handling all traffic services. It also means new opportunities for revenue growth with emerging data service offerings at higher profit margins compared to voice services. This paper will focus on Mobile Carriers and their move to 3G services. The intent is to educate on the basics of mobile networks, promote a general understanding of the migration to 3G networks, the reason carriers are moving to 3G, and what challenges they will face during the process.

European 3G Mobile Industry Self-Regulation: IAPCODE Background Paper

Thu, 01 Jan 1970 00:00:00

This is a background paper laying out the main issues related to self-regulation of 3G mobile content and services. It is informed by research done under the IAPCODE selfregulation.info project, funded by the European Commission under the Safer Internet Action Plan. The project analyses self-regulatory models across media sectors and national boundaries. The objective of the paper is to provide a background for an informed discussion of 3G codes of conduct, as well as laying out the factors crucial for successful development of self-regulatory models in a 3G environment.

Mobile Video Solution

Thu, 01 Jan 1970 00:00:00

The popularity of mobile video is increasing rapidly due to the introduction of 3G handsets, as well as new services such as video clip downloads, video MMS messaging, and now full streaming video. With analysts, such as Strategy Analytics, estimating that in 2008 there will be 150 million mobile video users worldwide, generating revenues of $4.7 billion, it is clear that mobile video presents a significant opportunity to drive mobile data revenues. Mobile video is the key application for 3G - enabling you to drive adoption and usage of 3G services, increase mobile data service revenues, and drive sales of 3G handsets.

Coverage and Capacity Calculations for 3G Mobile Network Planning

Thu, 01 Jan 1970 00:00:00

Third Generation (3G) radio networks are based on the code division multiple access technology (CDMA) and are currently being installed in countries such as Japan and South Korea. Coverage and capacity are important issues in the planning process for cellular Third Generation (3G) mobile networks. The planning process aims to allow the maximum number of users sending and receiving adequate signal strength in a cell. This paper presents calculations for capacity, coverage for 3G networks.

Mobile Network Evolution: From 3G Onwards

Thu, 01 Jan 1970 00:00:00

One target: making 3G a success in a pervasive wireless world after the triumph of 2G. One ultimate goal: an heterogeneous flexible network architecture that adapts dynamically to the changing environments. Although this target can be years away, "Beyond 3G" brings the capability to introduce into 3G new Air-interfaces and seamless mobility across different radio access technologies. And then will safely come 4G.

Secure Wireless Networking Using SSL VPNs

Thu, 01 Jan 1970 00:00:00

Today, many companies are embracing wireless networking technologies to enhance productivity, provide better customer service, and even offer Internet access to partners and on-site visitors. The emergence of new technologies, widespread cellular-data service, and an increasing number of wireless access points are making it easier for users to access information they need, when and where they need it.

With wireless hotspots available in coffee shops, airports, and restaurants, business travelers can work easily no matter where they are. In addition, many users are enjoying the convenience of Wi-Fi connections in their hotel rooms and homes.

While providing users wireless access to file shares, applications, and other network resources offers many benefits, doing so can present security and manageability challenges. The multiplicity of connectivity options-cellular, local area networks (LANs), wireless local area networks (WLANs), and WiFi-can be difficult for IT departments to manage.

Because users need to access resources from both IT-managed devices such as corporate laptops and from unmanaged devices such as PDAs, many existing remote access solutions leave the network open to security threats from viruses, malware, and Trojan horses. In addition, the lack of interoperability among wireless vendors, an ever-evolving security framework for WLANs, and issues related to Internet and firewall traversal present further challenges.

Read wireless expert Peter Rysavy's views on why SSL VPNs such as those from Aventail uniquely address these issues, providing true everywhere access with complete control and security in the white paper: "Secure Wireless Networking Using SSL VPNs."

Tiered Storage Network Infrastructures over Distance: A.k.a. Extended Storage Networks

Thu, 01 Jan 1970 00:00:00

You have heard the terms WAN, MAN, LAN and SAN along with tiered storage, ILM, SAS and SATA, among others. Learn how to leverage and align these and other storage access technologies to work for you to meet your specific needs.

Tiered storage is a popular topic associated with information lifecycle management (ILM). Tiered storage involves much more than deciding and managing what type of disk drives and storage subsystems should be used for online, near-line and offline storage pools. A storage access subject matter expert (SME) can help you find your way through the sea of technology options, requirements and vendor hype. Marc Staimer, President of Dragon Slayer Consulting, is your guide for this informative session.

Learn HOW TO:

Avoid treating all storage access the same
Support tiered storage, management and protection
Classify servers and applications to applicable access techniques
Look in and understand what's inside MAN and WAN "generic network clouds"
Determine what levels of access you need and where
Capacity and performance planning and management
Implement security and availability for tiered storage access

This session assumes basic to moderate knowledge of storage and storage networking (SAN and NAS) practices and technologies. By attending this session you gain a better understanding of topics, including a look inside the mysterious generic networking cloud for metropolitan area networks (MAN) and wide area networks (WAN). Topics covered include LAN, MAN, WAN, SAN, along with IP, iSCSI, FC, SAS, SATA, FICON, WiFi, NAS, WAFS, virtualization and routing. If you need to learn about tiered storage access for data protection, scaling and ILM, this must-attend session is for you.

The Switch Evolves: Unified Wireless LANs - A Farpoint Group White Paper

Thu, 01 Jan 1970 00:00:00

In their relatively short life, WLANs have gone through a remarkable number of technological and architectural incarnations. With each step, the WLAN has gotten closer to becoming the equal of the wired LAN in every respect, with the added bonuses of providing for mobility and far more flexibility in terms of both installation options and life-cycle growth. The wireless LAN is now on the verge of becoming the default connection for many (and, we believe, eventually most) enterprise users, especially those who use mobile computers and other WLAN-equipped clients as their preferred or only vehicle. With the introduction of the 54-Mbps 802.11a and .11g physical-layer standards, and the resolution of such issues as time-bounded services (.11e and WMM) and security (.11i and WPA/WPA2) by both the IEEE and the Wi-Fi Alliance, respectively, there is now little the WLAN cannot do in terms of enterprise-class LAN services.

Download The Switch Evolves: Unified Wireless LANs Now.

Wireless Connectivity, Security and VIA3: A True Checks and Balances Solution for WiFi

Thu, 01 Jan 1970 00:00:00

Wireless connectivity is one of the fastest growing industries in the tech sector today and experts predict a 30 percent growth per year in the wireless industry between now and 2006. However, the biggest hurdle keeping many government agencies and corporations from deploying WiFi is the fear of security breaches. Learn how VIA3 can play an integral role in helping users benefit from the convenience and ease of wireless connectivity, without compromising the information being shared.

Deploying License-Exempt WiMAX Solutions

Thu, 01 Jan 1970 00:00:00

Existing and potential wireless Internet service providers (WISPs) and vertical markets such as government and education are considering the benefits associated with Worldwide Interoperability for Microwave Access (WiMAX), specifically the flexibility and cost reduction benefits associated with the license-exempt portion of WiMAX. However, the popularity of WiMAX is causing concern among some operators who fear that standardizing the license exempt broadband wireless spectrum may lead to overcrowding, while other operators hope to establish new solutions that can accommodate the sharing of spectrum and infrastructure locations.

This paper provides WISPs and vertical markets with technical information related to deployment of a license exempt WiMAX solution. It compares license-exempt and licensed WiMAX solutions and highlights benefits such as cost-effectiveness and deployment flexibility. License-exempt challenges such as where to place infrastructure equipment and how to minimize interference are also examined.

User-Centric Broadband Services: Demand Drivers and Market Opportunities

Thu, 01 Jan 1970 00:00:00

In today's increasingly competitive environment, borders between communication, information and entertainment are becoming blurred. Nevertheless, telecommunication operators are striving to deliver differentiable services that provide them with a sustainable competitive advantage and help to expand their market share. As users seek new ways to be connected, organized, entertained and empowered, innovative communication services address such unmet needs. Fixed operators may leverage services, such as real-time call routing, to mitigate wireless substitution, while mobile operators may jumpstart a saturated market by offering innovative multimedia applications. Hybrid operators are uniquely positioned to deliver convergent applications that optimize the use of their fixed and mobile assets. Each of these competitive dynamics affords operators exciting opportunities to catalyze revenue and market share growth in a user-centric broadband world.

3G Market Evolution Primer

Thu, 01 Jan 1970 00:00:00

The world is slowly but surely moving away from the limited bandwidth world of current second generation (2G) wireless technologies to next generation wireless infrastructure that enables much higher bandwidths. This next generation technology is also known as third generation (3G) wireless technology. 3G increases the bandwidth available per user by fifteen to forty times. This opens up the opportunity to vastly improve the utility of the mobile devices used by end users. The large expected growth in mobile data users in the near-term justifies the need for transitioning to 3G data networks.

3G: Dead on Arrival... And Still Your Best Investment

Thu, 01 Jan 1970 00:00:00

After years of visionary hype, hope, and investment, third-generation wireless devices are here. The technology works fine. But the visions that drove those billions into 3G infrastructure have fallen flat. Still, for several players, 3G may be the investment that saves the company. Even without vision, and killer apps, and videophones, 3G can put major points on the scoreboard: market share gains for some, lower churn for others, and big increases in ARPU?even in a no-growth economy. The trick is understanding which part of the 3G playbook will work best for your company.

The flexcell Platform: A Software-Defined Radio Architecture for the Next Generation of ...

Thu, 01 Jan 1970 00:00:00

Flexcell's Software-Defined Radio can support multiple RF bands including not only 2G and 3G mobile systems, but also HF band, VHF/UHF military band, radio navigation aid band, low-powered ISM (industrial, scientific and medical) bands, GPS band, IEEE802.11x wireless LANs and Bluetooth, the Local Multipoint Distribution Service (LMDS) band, etc. This is accomplished by including in the flexcell platform a RF board for each band of interest. The RF board receives the wideband analog RF signal from one of the antennas, converts the signal through analog circuits to a wideband analog IF signal, and then converts the signal to a wideband digital IF signal using an ADC.

WiMAX, making ubiquitous high-speed data services a reality

Thu, 01 Jan 1970 00:00:00

Imagine a single wireless technology that can: -connect enterprises and residential users in urban and suburban -environments where access to copper plant is difficult, -make portable Internet a reality by extending public WLAN hotspots to city hotzones, -further expand hotzones to metropolitan area coverage for mobile data-centric service delivery. -Such a technology exists today. WiMAX. Thanks to state-of-the-art radio technology, WiMAX offers broadband wireless access at data rates of several tens of Mbit/s (up to 75 Mbit/s per base station) and within a range of several tens of kilometers (up to 50 km). This same radio technology offers high-speed data services to all nomadic terminals (laptops, PDAs, etc.) at a better cost:performance ratio than 3G, given an optimized trade off between throughput and mobility. Finally, WiMAX incorporates Quality of Service elements to offer multimedia services, including voice. Given its huge benefits, WiMAX will develop as a self-standing radio access solution in the global network architecture. WiMAX will also enable end-users to benefit from an "Always Best Connected" experience when accessing their applications via the best available network, at home, on the pause, or on the move. A technology with such enormous potential is destined for a bright future.

The TDMA Operator Path to GSM: A Successful Transition to GSM & Evolution of TDMA

Thu, 01 Jan 1970 00:00:00

This white paper is intended for TDMA operators interested in understanding Ericsson?s views on how to ensure a successful transition to GSM/GPRS and how Ericsson will evolve the TDMA network. TDMA operators have the choice to follow the GSM or the CDMA technology evolution paths to 3G, with Ericsson providing solutions for both these options.

Performance Evaluation of Point-to-Multi-Point (PMP) and Mesh Air-Interface in IEEE Standard 802.16a

Thu, 01 Jan 1970 00:00:00

Broadband wireless access has gained a lot of attention during the last years. At the same time multi-hop communication is expected to become a major technology in systems beyond 3G. The IEEE standard 802.16a provides both high speed wireless access and multi-hop capabilities through the two air-interfaces that are investigated in this paper: Point-to-Multi-Point (PMP) and Mesh mode. The Mesh mode already supports multi-hop communications, so the design of PMP has been extended in order to adapt this air-interface to support multi-hop. In this paper the performances of Mesh and PMP mode are compared by means of an analytical evaluation of the efficiency, or equivalently the overhead introduced by the MAC layer protocol.

WiMAX & Family: Threats and Opportunities

Thu, 01 Jan 1970 00:00:00

After a number of false dawns of alternative wireless broad band technologies outside the main stream focus of UMTS / W-CDMA / 3G, there has been growing debate in the telecom industry of whether a new generation of wireless technologies like 802.16 (WiMAX), UMTS-TDD, Flarion/802.20 can help to create a disruptive impact by allowing a range of new entrants into the industry at a structurally lower cost. The aim of this paper is to explore the technical viability of these various new technologies and, as such, assess their ability to disrupt the market.

Wireless 3G: The Future of Wireless

Thu, 01 Jan 1970 00:00:00

3G, the next-generation wireless standard that is expected to address the capacity issue as well as the disparate wireless standards. According to Cahners In-stat research, the fastest growth will be Code Division Multiple Access (CDMA), despite the huge market share for GSM. The 3G technology has GSM roots from Europe and is expected to bring together diverse wireless standards like CDMA, TDMA and PDC.

Fraud Control: 3G, Risk or Revenue?

Thu, 01 Jan 1970 00:00:00

Fraud can occur at any point or time in a businesses organisation and operation. These points may be in terms of network, commercial, customer or even staff and all will remain the key in assessing 3G fraud risk. This paper examines the risks associated with 3rd Generation Mobile Services. A summary of Azure's expertise in the leading edge of fraud prevention, detection and management is provided along with a summarized proposal for a '3G' Fraud Management Solution.

WLAN Security -- Why Your Firewall, VPN, and IEEE 802.11i Aren't Enough to Protect Your Network

Thu, 01 Jan 1970 00:00:00

While many enterprises now realize the security threats posed by a wireless LAN deployed without the proper security features, most do not realize that this is not enough to protect the enterprise from further danger. Enterprise networks are vulnerable due to security threats posed by the presence of these devices, irrespective of whether the enterprise has an officially deployed WLAN or not. Whay many managers do not realize is that conventional firewalls, VPNs, and security mechanisms in the 802.11 standard are unable to alleviate these threats. Written for executives and IT managers, this white paper describes these new security threats from wireless LANs and desirable features of a new type of security system?a Wi-Fi Firewall?to prevent them.

Troubleshooting Wireless LANs to Improve Wi-Fi Uptime and Security

Thu, 01 Jan 1970 00:00:00

IEEE 802.11-based wireless LANs, also called Wi-Fi networks, are quickly expanding into mainstream areas of business from their traditional niche applications in warehouses and on retail floors. As a result, it is becoming equally as important for network engineers and technicians to have the necessary tools to troubleshoot and secure their wireless networks, as it is their wired networks. Fortunately, technicians no longer need to carry several tools in order to test and troubleshoot their networks. Integrated wireless/wired portable analyzers can quickly isolate problems to the wireless or wired network, client device, or application, enabling technicians to accelerate problem resolution.

Securing Wireless Technology

Thu, 01 Jan 1970 00:00:00

Wireless networking frees mobile workers from wires and cables, allowing them to collect and view data whenever, wherever they choose. The popularity of wireless networking is broad and continues to grow. The Gartner Group stated in an April 2005 study that by 2015, the average urban citizen in the United States and Europe will use at least six wireless networking technologies per day.

Wireless technology is a broad reaching term that can signify wireless local area, (WLAN or Wi-Fi); wireless wide area (WWAN), such as CDMA or GRPS; Radio Frequency Identification (RFID); or personal area networking technologies such as Bluetooth. With these technologies, data can be transmitted anytime, from any location. However, with the physical freedoms inherent to wireless technology come new security concerns. Protecting a network was much more straightforward when wires limited its reach and network security was maintained by locking the doors or simply disconnecting.

In an effort to shore up against wireless security threats, some companies have taken the extreme approach of banning wireless technology from use. Maybe a good idea in theory, but today’s business environment requires the flexibility and speed that mobile communications offer. In many cases, it is simply too late to reject wireless technology as it is likely that employees already use it in the workplace -- RFID keys, automatic entry systems, cell phones, and possibly even rogue access points -- without corporate knowledge or approval. When real time data and communications are critical to success, the saying “time is money” takes on all new meaning. Many employees will pursue the benefits of wireless without the blessing of their corporate IT staff.

Companies that choose to implement wireless technology -- and benefit from the freedoms that it brings -- must consider three basic areas of security:

Device Security -- Determines who can use the device (with passwords and biometrics), how data is stored on the device secured (to protect it in case of loss or theft) and protects the device from viruses and “Trojan horse” attacks.
Communication Security -- Protects data as is travels through the air, usually employing encryption, profiles and data tunnels.
System Access and Authentication -- Determines the users and network components that are allowed to access the corporate network and/or applications residing on the network.

This paper will address the above security options as they apply to the different radio technologies.

Sprint Mobile Tech Insider: Wireless Email Edition

Thu, 01 Jan 1970 00:00:00

Modern business has been changed by recent technological advances, such as wireless networks, broadband connectivity, and compact, portable communication devices. Forward-looking enterprises are finding that mobility applications and devices have advanced along with improvements in remote access techniques. A gradual progression is evident, from basic capabilities, like email and calendaring, to deeper functionality, like remote database access and worldwide video conferencing.

Companies that invest in infrastructure to support mobility and remote access for employees and trusted partners increasingly rely on this infrastructure to enhance productivity and foster a more adaptive work environment. This trend suggests that the workplace of the future will be an open, collaborative realm, with less focus on geographic limitations between the physical location of the enterprise and its employees.

Download Sprint Mobile Tech Insider: Wireless Email Edition now.

Mobile Communications: Inside the Evolution

Thu, 01 Jan 1970 00:00:00

Download Mobile Communications: Inside the Evolution now.

Trends in Enterprise Wireless Technology

Thu, 01 Jan 1970 00:00:00

Developments of new wireless technologies allow mobile professionals to be more productive than ever with their wireless handhelds. Attend this webcast and discover some of these new technologies. Key topics include:

Wireless networks provide broadband-like speeds for wireless users
Improved storage capacity allows for mobile professionals to access all vital documents
New security applications allows robust handheld protection, encryption, and lockdown

3G Wireless Networks, Wi-Fi Wireless LANs, and Secure VPNs: Perspectives for Mobile Operators

Thu, 01 Jan 1970 00:00:00

Mobile data solutions that address the speed, coverage, security, and ease of use requirements for enterprises have just started to penetrate the market - prior solutions have fallen short and been disappointing. But with powerful laptop and PDA devices, VPN technology, 3rd Generation mobile data technologies like CDMA2000 and UMTS, supplemented by Wi-Fi wireless LANS for in-building enterprise speed demands, business data users now have all the tools they need to take their office wherever they go. This paper explores reasons for why mobile data has taken so long to find its place in business, business user needs for mobile data solutions, and how 3G mobile data and Wi-Fi complement each other for a complete mobile data solution.

WiMAX Potential Premieres at Sundance Film Festival

Thu, 01 Jan 1970 00:00:00

The recent evolution of WiMAX technology and WiMAX standards will accelerate the deployment of broadband wireless technologies. As a sponsor of the Sundance Film Festival, Intel saw an opportunity to demonstrate the full potential of broadband wireless technology to change the way the film industry delivers content to theaters. Sundance presented multiple options to showcase the impressive technology across a variety of usage models.

Intel, collaborating with Alvarion and Mountain Wireless, designed a rich set of experiences for festival visitors, all enabled by a WiMAX technology-based broadband wireless network. The network included over 55 miles of point-to-point broadband wireless backhaul from Salt Lake City to Park City, Utah. Distribution within the Park City venue was accomplished by a point-to-multipoint broadband wireless network. The centerpiece of the effort was the first-ever wireless Internet streaming of a feature-length film to a live premier audience at a remote ski lodge. Accomplished with market-available hardware and straightforward installations, the resulting image quality at the premiere was indistinguishable from that customarily observed in a commercial theater.

WiMAX: The Next Big Step in Wireless Broadband? - A Technical and Regulatory Overview

Thu, 01 Jan 1970 00:00:00

One of the most talked about developments for next-generation wireless broadband deployment is a technology commonly referred to as WiMAX. As the next evolutionary step of its WiFi predecessor, WiMAX is being touted as an easily deployable "third pipe" that will deliver both flexible and affordable last-mile broadband access to millions. Many believe that WiMAX will do for broadband access what cellular phones did for telephones: connect users directly to the Internet from anywhere within a major metropolitan area.

IEEE 802.16* WirelessMAN* Specification Accelerates Wireless Broadband Access

Thu, 01 Jan 1970 00:00:00

This paper explains how the new IEEE 802.16 standard and WiMAX (Worldwide Interoperability of Microwave Access) will standardize and promote wireless broadband as a wireless alternative to digital subscriber line (DSL) and cable that can help remove barriers to broadband access. The 802.16 standard defines the Wireless MAN (metropolitan area network) air interface specification (officially known as the IEEE WirelessMAN standard). This wireless broadband access standard could supply the missing link for the "last mile" connection in wireless metropolitan area networks.

WiMAX: Broadband Wireless Access

Thu, 01 Jan 1970 00:00:00

WiMAX (Worldwide Interoperability for Microwave Access) is the IEEE 802.16 standards-based wireless technology that provides MAN (Metropolitan Area Network) broadband connectivity. WiMAX is an Air Interface for Fixed Broadband Wireless Access Systems, also known as the IEEE WirelessMAN air interface. WiMAX-based systems can be used to transmit signals as far as 30 miles. WiMAX can offer a solution to what is normally called the "last-mile" problem by connecting individual homes' and business offices' communications.

IEEE 802.16a Standard and WiMAX Igniting Broadband Wireless Access

Thu, 01 Jan 1970 00:00:00

This paper talks about the 802.16 standard, amended by the IEEE to cover frequency bands in the range between 2 GHz and 11 GHz, specifies a metropolitan area networking protocol that will enable a wireless alternative for cable, DSL and T1 level services for last mile broadband access, as well as providing backhaul for 801.11 hotspots. The new 802.16a standard specifies a protocol that among other things supports low latency applications such as voice and video, provides broadband connectivity without requiring a direct line of sight between subscriber terminals and the base station (BTS) and will support hundreds if not thousands of subscribers from a single BTS.

Overview of WiMAX

Thu, 01 Jan 1970 00:00:00

WiMAX is a standard-based wireless technology that provides high throughput broadband connections over long distance. WiMAX can be used for a number of applications, including "last mile" broadband connections, hotspots and high-speed connectivity for business customers. It provides wireless metropolitan area network (MAN) connectivity at speeds up to 70 Mbps and the WiMAX base station on the average can cover between 5 to 10 km. This paper gives an overview of the technical standard for Worldwide Interoperability for Microwave Access (WiMAX).

Wireless Technical White Paper

Thu, 01 Jan 1970 00:00:00

The WiMAX Guys, in conjunction with the strategic partner, US Internet, provides wireless networking installation, management, and service to hospitality companies wishing to provide public or private wireless hotspots. The complete solution encompasses not only the installation of world-class commercial wireless equipment, but also high-speed Internet connectivity, easy-to-use wireless and user management capabilities - including user authentication and a Web portal ready for advertising use - 24/7 help desk support, remote management and comprehensive break/fix programs to keep your network running smoothly. In addition, property employees can be supplied with spam-free e-mail. This white paper discusses some of the technical aspects of The WiMAX Guys/US Internet wireless solution.

Demystifying WiMAX

Thu, 01 Jan 1970 00:00:00

WiMAX stands for Worldwide Interoperability for Microwave Access and it is the latest, and most-hyped, generation of fixed wireless technology in years. This paper takes a practical look at WiMAX and how operators plan (or don't plan) to take advantage of it. The paper also includes six-year forecasts of broadband wireless subscribers for more than 40 countries.

WiMax: Between Hype and Hot Stuff

Thu, 01 Jan 1970 00:00:00

WiMax promises to deliver bits and bytes at a blazing 70 megabits per second - and to do so wirelessly within a 30-mile radius, provided the transmitter is located at a minimum height of 120 feet. What's more, WiMax can function in a wide electromagnetic spectrum ranging from publicly available bands, such as 2.4 or 5.8 gigahertz, to privately owned bands that could be used for dedicated wireless broadband networks. It's the kind of flexibility that should allow broadband providers and gear makers to achieve greater economies of scale and create innovative products quickly and cheaply.

Local Multipoint Distribution System (LMDS)

Thu, 01 Jan 1970 00:00:00

Local multipoint distribution system (LMDS) is the broadband wireless technology used to deliver voice, data, Internet, and video services in the 25-GHz and higher spectrum (depending on licensing).

As a result of the propagation characteristics of signals in this frequency range, LMDS systems use a cellular-like network architecture, though services provided are fixed, not mobile. In the United States, 1.3 MHz of bandwidth (27.5 B 28.35 GHz, 29.1 B 29.25 GHz, 31.075 B 31.225 GHz, 31 B 31.075 GHz, and 31.225 B 31.3 GHz) has been allocated for LMDS to deliver broadband services in a point-to-point or point-to-multipoint configuration to residential and commercial customers. This tutorial details the underlying technology inherent in offering voice, data, Internet, and video services over LMDS through integration with the wireline environment.

IEEE 802.16 Backgrounder

Thu, 01 Jan 1970 00:00:00

Broadband wireless access (BWA) has become the best way to meet escalating business demand for rapid Internet connection and integrated data, voice and video services. The Institute of Electrical and Electronics Engineers Standards Association (IEEE-SA) sought to make BWA more widely available by developing IEEE Standard 802.16, which specifies the WirelessMAN Air Interface for wireless metropolitan area networks. IEEE 802.16 addresses the "first-mile/last-mile" connection in wireless metropolitan area networks.

What is Broadband Wireless Access?

Thu, 01 Jan 1970 00:00:00

We have come a long way since 2.4 Kbytes modems used to be the solution to transfer files from one PC to another. We now have the capability to generate and process massive amounts of data from our desktop. An always-growing range of applications leaves us craving more capacity. That is the underlying reason of "Broadband" development. But there is one issue. Between the desktop and the Fiber backbone is that stretch of the information highway, known as the 'last mile' or Access portion of the network.

3G: Another Technology Cycle

Thu, 01 Jan 1970 00:00:00

There is a great deal of scepticism about the prospects for third-generation mobile - or 3G - services. Several criticisms in particular are being levelled at 3G - that it requires a heavy investment, that the technology is unproven, that the benefits are hard to identify. Although understandable, these comments overlook the most important point of all: that 3G will generate substantial benefits over the long term. After all, the 3G technology cycle has only just begun. This white paper provides a historical view of the innovation cycle and an analysis of the business fundamentals behind third generation communications.

Standardization of 3G Mobile Systems

Thu, 01 Jan 1970 00:00:00

Standardization is a key element for the success of 3G systems. Today, many companies have taken standardization on board as a major technical and commercial element in their businesses. These companies are aware that they must play an active role in this field. For 3G An unprecedented organization has been set up to harmonize these systems and make sure that they are interoperable. This article is aimed at people who want to know more about the history and organization of the standardization bodies involved in the definition of the third generation of mobile telecommunication systems. The Third Generation Partnership Project (3GPP) is a large organization which brings together numerous contributors from all over the world. To help understand the differences between 2G and 3G systems, and appreciate the new technological challenges, some background is given about the 3G system architecture and the radio technology adopted.

3G Wireless Networks, Wi-Fi Wireless LANs, and Secure VPNs: Perspectives for Mobile Operators

Thu, 01 Jan 1970 00:00:00

Extended Tiered Storage Networks

Thu, 01 Jan 1970 00:00:00

You have heard the terms WAN, MAN, LAN and SAN along with tiered storage, information lifecycle management, serial-attached SCSI and SATA, among others. Learn how to leverage and align these and other storage access technologies to work for you to meet your specific distance needs.

Wireless Primer - Helping IT and Telephony Professionals Understand the Wireless World

Thu, 01 Jan 1970 00:00:00

VOIP becomes wVOIP, and LANs become WLANs. How do technology professionals keep up with the industry standards? From the A,B,D's of 802.11 to GPRS and CDMA or WWAN, it's a veritable alphabet soup out there.

CREDANT Technologies* and Intel XScale® Technology

Thu, 01 Jan 1970 00:00:00

CREDANT Mobile Guardian* encrypts data on the device to protect against loss, theft, or other unauthorized access. To attain a high level of security, CREDANT uses a variety of encryption algorithms, including AES and 3DES. The CREDANT software encrypts and decrypts data on numerous Intel-based client endpoints. All endpoints are centrally managed by the CREDANT Mobile Guardian Enterprise Server, which resides on Intel-based PCs and servers.

"The Intel XScale® technology based platform literally gives us the ability to use stronger encryption without impacting the user," said Jason Jaynes, Director, Product Management. "Wide adoption of Intel XScale technology based processors throughout the mobile ecosystem allows CREDANT to provide strong encryption support seamlessly, across a wide range of mobile devices."

CREDANT policies determine if access to the device will be granted, encrypts data resident on the device and controls what an authenticated user can do-synchronize with companion PCs, authorize applications allowed to run on the device, restrict the use of external devices, and use of the camera, infrared, Bluetooth* wireless technology or WiFi ports. Intel XScale technology gives CREDANT the power to deliver security with the performance required to meet enterprise requirements, gain end-user endorsement, and ensure regulatory compliance.

TechTarget Case Study: AirTight Networks Generates Highly Qualified Sales Leads with TechTarget ...

Thu, 01 Jan 1970 00:00:00

AirTight Networks maintains network and mobile client integrity from Wi-Fi security vulnerabilities, providing Wi-Fi IPS Firewalls, monitoring and intrusion-prevention products. The company's recent white paper addresses the growing problem of network break-ins stemming from the use of wireless LANs. This case study examines how customized questions in AirTight's TechTarget white paper program enabled them to build a unique profile on each member of their target audience to segment and prioritize the leads for their sales team.

The 3G Evolution: Taking CDMA2000 Into the Next Decade

Thu, 01 Jan 1970 00:00:00

Proving the business case for 3G (third-generation) wireless networks is sometimes considered to be a daunting challenge since it is assumed that 3G requires a massive amount of new hardware, large capital commitments, and new spectrum, all of which are further compounded by interoperability constraints between newly-deployed 3G networks and existing 2G networks. Nothing could be further from the truth. From its inception, the CDMA2000 evolutionary path was designed to minimize the impact of its introduction into an operator's network.

Can WiMAX Address Your Applications?

Thu, 01 Jan 1970 00:00:00

WiMAX is a broadband wireless standard that enjoys widespread support from both the computer and telecom industries worldwide, making this technology particularly cost-effective. It is engineered to deliver significant business benefits to operators and users in diverse environments (enterprise, consumer, emerging, public service), geographies and demographies (urban, suburban, rural), both over the short and long terms. This paper attempts to present the key technical features and applications of WiMAX, and illustrate them by providing examples of usage scenarios in which WiMAX would be the preferred solution.

Utilizing the RF Spectrum for WiMAX

Thu, 01 Jan 1970 00:00:00

The WiMAX standard is set to bring the long-awaited spectral efficiency and throughput to meet users' needs for combined mobility, voice services and high data rates. It will enable access for more users due to its NLOS capability, lower deployment costs, wide-range capability and penetration into the mass consumer market. Needless to say, it is the clear path to broadband mobility that will form the basis of 4G.

Data Capabilities: GPRS to HSDPA and Beyond

Thu, 01 Jan 1970 00:00:00

This paper begins with an overview of the market, looking at adoption of services, deployment of GSM-UMTS technologies and other wide-area wireless technologies. It then explains the capabilities as well as workings of the different technologies, including GPRS, EDGE, WCDMA and HSDPA to quantify real-world performance. Other wireless technologies, including CDMA2000 and WiMAX, are examined as well. Finally, the paper discusses the evolution from GPRS to HSDPA, as well as to future enhancements, including how increasing spectral efficiency will drive deployment.

The WiMax Spectrum Picture

Thu, 01 Jan 1970 00:00:00

Wireless broadband is clearly at a crossroads. Convergence is taking place between the technology road maps of WiMAX/802.16 and advanced 3GPP, 3.5G-4G cellular systems. These technologies are on a collision course and will provide similar bandwidth and significant market overlap by 2010. The evolution of spectrum availability and overall regulation will greatly impact the future of mobile broadband wireless systems. This paper provides a thorough review of the current spectrum and regulation activity worldwide as well as the trends to be expected.

Wireless Technologies, Wireless Fidelity (Wi-Fi) & Worldwide Interoperability for Microwave ...

Thu, 01 Jan 1970 00:00:00

One of the technological advances that are having a major impact on the way one does business is the increase in wireless networks. This paper references how Wi-Fi technology is deployed and some of its advantages over traditional means. WiMax promises to help corporations expand business, drive down costs, increase overall profitability, increase the quality of service, and increase the number of users that connect to the internet. The WiMax technology in its current form will complement the 802.11 or Wi-Fi standard.

Grow Revenue and Reduce Time to Market with Modular Communications Building Blocks: ...

Thu, 01 Jan 1970 00:00:00

This white paper discusses LBS applications that are poised for strong growth in the consumer market due to improvements and standardization of positioning technologies in 2.5G and 3G networks, including Global System for Mobile Communications (GSM)/general packet radio service (GPRS), code division multiple access (CDMA), and universal mobile telecommunications system (UMTS).

Enabling Notebook Users With Wide-Area Broadband Access

Thu, 01 Jan 1970 00:00:00

The benefits and convenience of having wireless broadband connectivity are so compelling that enterprises now desire to provide connectivity to their mobile workforces anytime and anywhere. The global introduction of 3G (third generation) wireless networks satisfies this desire by making it possible for notebook computer users to enjoy wireless broadband connectivity far beyond the coverage areas of WLAN (Wireless Local Area Networks). This paper discusses the market drivers for the embedded 3G notebook, the capabilities offered by today's 3G networks, 3G and WLAN interoperability, the performance advantages of embedding 3G into the notebook, and the benefits of 3G technologies to the enterprise.

Best Practices for a Wireless VoIP Infrastructure

Thu, 01 Jan 1970 00:00:00

VoIP systems have revolutionized the way enterprises deploy and manage telephony, allowing not just cost savings but providing increased flexibility and productivity in the way business is done. In a similar vein, wireless LANs are delivering unprecedented mobility and flexibility, delivering freedom to access information from anywhere in the enterprise. As with any new technology, challenges will be encountered along the way. However, applying the best practices as described in this paper for the wireless VoIP architecture and components, along with appropriate training and planning will help ensure the success of the deployment.

Controlling TCP Fairness in WLAN Access Networks

Thu, 01 Jan 1970 00:00:00

This paper studies the problem of maintaining fairness for TCP connections in wireless local area networks (WLANs) based upon the IEEE 802.11 standard. TCP unfairness may result in significant degradation of performance leading to users perceiving unsatisfactory quality of service. The paper proposes and analyzes two solutions that are capable of enabling TCP fairness with minimal additional complexity. The proposed solutions are based on utilizing a rate-control mechanism in two modes: static or adaptive. They do not require modifying existing standards at the MAC or network layers. Hence, they are fully compatible with existing devices.

WiMAX and the Metro Wireless Market: WiMAX versus Wi-Fi and 3G

Thu, 01 Jan 1970 00:00:00

Wireless LANs based on the IEEE 802.11 or Wi-Fi standards have been a resounding success. However, when we shift the focus to the wide area, we see the market for broadband wireless service is still up for grabs. The cellular carriers were first to market with their 2.5G/3G data services, but those have yet to crack the megabit barrier. Mesh technology Is expanding the range of Wi-Fi from 100 meters to an entire metropolitan area, but the performance of those mesh networks has yet to be tested. Finally, there is the new contender in this space, WiMAX. WiMAX, short for Worldwide Interoperability for Microwave Access, is a metro-area wireless technology defined in the IEEE 802.16 standards, and promoted by the WiMAX Forum. Like the Wi-Fi Alliance, the WiMAX Forum looks to develop interoperability test suites to insure a multi-vendor solution that will result in lower cost products based on open standards.

Risky business: Understanding Wi-Fi threats

Thu, 01 Jan 1970 00:00:00

802.11 (Wi-Fi) Wireless LANs can reduce network installation cost, make your workforce more productive and improve your company's bottom line. But poorly-secured WLANs can also leave your company's network vulnerable to misuse and attack, jeopardizing business assets. In this webcast, you will learn why most WLANs are inherently vulnerable right from the start. You will see how hackers leverage common weaknesses to gather confidential data, prey upon wireless users and penetrate business networks. Forewarned is forearmed: by understanding these Wi-Fi threats, you can realistically assess business risk and take steps to effectively defend your network from wireless hackers.

Risky business: Understanding WiFi threats

Thu, 01 Jan 1970 00:00:00

Troubleshooting Wireless LANs to Improve Wi-Fi Uptime and Security

Thu, 01 Jan 1970 00:00:00

IEEE 802.11-based wireless LANs, also called Wi-Fi networks, are quickly expanding into mainstream areas of business from their traditional niche applications in warehouses and on retail floors. As a result, it is becoming equally as important for network engineers and technicians to have the necessary tools to troubleshoot and secure their wireless networks, as it is their wired networks. Especially useful are portable, integrated wireless/wired analyzers. Having a single device for troubleshooting both network segments allows technicians to quickly determine whether the sources of problems are wireless or wired issues - or non-network issues altogether - so they can maximize network availability for users, who are growing increasingly mobile.

VoWiFi Vanguards: Blazing The Trail

Thu, 01 Jan 1970 00:00:00

Recent surveys show that voice over IP (VOIP) has gone mainstream, deployed by two out of three enterprises. A similar percentage are rolling out business-grade wireless LANs based on the 802.11 Wi-Fi technology. VoWiFi, the synergistic marriage of these technologies, seems sure to follow. Indeed, one in five companies cites VOIP as a primary driver for Wi-Fi deployment. But elsewhere, VoWiFi remains an unrealized vision. Why? Some companies lack budget or staff; others are stymied by quality or security. For most, VoWiFi is simply uncharted territory with unknown challenges. To better understand what it takes to tap VoWiFi's potential, we consulted six firms that have already ventured down this path. From health care to hospitality, walled office to warehouse, these vanguards have given VoWiFi a try, with varied goals and results. These are their stories....

I'll be watching you: Wireless IDS/IPS

Thu, 01 Jan 1970 00:00:00

Wireless intrusion detection and prevention systems have become standard operating procedure in corporate networks, including those without formal Wi-Fi deployment. From enforcing "no wireless" policies to blocking unauthorized sessions, these systems help companies see what's happening in their WLANs and provide tools to take corrective action. This webcast describes the role of WIDS/WIPS in WLAN security, the features commonly provided by WIDS/WIPS, and how WIDS/WIPS differ from (and complement) their wired network counterparts.

Xirrus High Performance Wi-Fi Networks

Thu, 01 Jan 1970 00:00:00

IT administrators upgrading existing Wi-Fi networks or deploying green field sites should deploy 802.11a/b/g infrastructure. This new white paper details how to use all the available non-overlapping channels in both the 2.4 and 5GHz frequency bands - allowing the WLAN to be optimized for both voice and data applications. The deployment of an 802.11a/b/g infrastructure provides increased bandwidth, more non-overlapping channels, cleaner spectrum and backwards compatibility with older clients that only work in the 2.4GHz band. Read this paper now and learn how to enable the maximum amount of aggregate bandwidth (up to 864Mbps) in both the 2.4 and 5GHz bands.

WiFiProfiler: Cooperative Diagnosis in Wireless LANs

Thu, 01 Jan 1970 00:00:00

While 802.11-based wireless hotspots are proliferating, users often have little recourse when the network does not work or performs poorly for them. They are left trying to manually debug the problem, which can be a frustrating and disruptive process. The users' troubles are compounded by the absence of network administrators or an IT department to turn to in many 802.11 hotspot settings (e.g., cafes, airports, conferences). The paper presents WiFiProfiler, a system in which wireless hosts cooperate to diagnose and possibly resolve network problems in an automated manner, without requiring any infrastructural support.

ECHOS - Enhanced Capacity 802.11 Hotspots

Thu, 01 Jan 1970 00:00:00

Given the explosive growth in hotspot wireless usage, enhancing capacity of 802.11-based hotspot wireless networks is an important problem. This paper makes two important contributions. It first presents the AP-CST algorithm that dynamically adjusts the Carrier Sense Threshold (CST) in order to allow more flows to coexist in current 802.11 architectures. The paper then extends the current hotspot engineering paradigm by allowing every cell and AP access to all available channels. These cells are then managed by the RNC-SC algorithm running in a centralized Radio Network Controller.

Sniffing Out the Correct Physical Layer Capture Model in 802.11b

Thu, 01 Jan 1970 00:00:00

Physical Layer Capture (PLC) in 802.11b refers to the successful reception of the stronger (higher signal strength at receiver) frame in a collision. PLC causes significant imbalance in the throughputs of sources. Existing 802.11b simulators, including NS-2 and Qualnet, assume that PLC occurs only if the reception of stronger frame starts first at the receiver. This paper shows empirically that in reality PLC occurs even if the stronger frame arrives later (but within the physical layer preamble of the first frame). The NS-2 simulator is modified to account for this and Qualnet will be incorporating a fix in their next release.

Layered Approach to Wireless Network Security & Management

Thu, 01 Jan 1970 00:00:00

While a wireless LAN can be installed by simply plugging an access point into an Ethernet port, an enterprise wireless LAN deployment requires a more thought-out plan that incorporates advanced security and management technologies. This paper outlines the specific elements of wireless LAN security (perimeter control, access control, date protection, and monitoring) and WLAN management (configuration, fault diagnostics, network usage, and policy enforcement). Reader will gain a keen understanding of how to effectively lockdown a wireless LAN and manage it for peak performance.

2006 Wireless LAN State-of-the-Market Report

Thu, 01 Jan 1970 00:00:00

The productivity benefits associated with general user mobility are becoming increasingly apparent to businesses, as evidenced by the growth in wireless LAN (WLAN) deployments in mainstream enterprise environments. In April 2006, Webtorials surveyed its subscriber base for the third consecutive year concerning WLAN deployment plans, attitudes, and experiences. This report is a summary and analysis of those findings, compiled fromWeb-based survey responses of 350 subscribers.The 2006 Webtorials survey revealed the following other key enterprise WLAN deployment and usage trends: Mainstream business WLAN implementations are widespread. 802.11b growth is waning, and 11g deployment plans currently outstrip those for more mature 802.11a networks. Centralized management architectures are quickly gaining traction. Plans for converged Wi-Fi/cellular networking are strong. Confidence in wireless security is growing, but is far from rock-solid. Voice over Wi-Fi deployments haven't increased much, but enthusiasm persists. About the Author:

Multi-Channel Link-Level Measurements in 802.11 Mesh Networks

Thu, 01 Jan 1970 00:00:00

Several routing protocols for IEEE 802.11 mesh networks that operate at multiple RF channels have been described before. However, only few facts about link-level characteristics in multi-channel environments have been published. This paper presents observations, made in an indoor testbed, about the impact of channel-assignment on the quality of links. It is argued that the assumption 'All radio channels are equal' does not hold in almost all indoor scenarios. Hence, great care must be taken when assigning radio channels to individual links, in order not to spoil network performance.

Municipal Wi-Fi Networks: The Goals, Practices, and Policy Implications of the U.S. Case

Thu, 01 Jan 1970 00:00:00

This paper explores three broad questions about municipal Wi-Fi networks in the U.S.: why are cities getting involved, how do they go about deploying these networks, and what policy issues does this new trend raise? To explain municipal involvement, the paper points out that cities have both the means to provide relatively inexpensive deployment and the motives to provide wireless connectivity to city employees, foster the economic development of communities and offer universal and affordable broadband services to residents. The paper then explores nine possible business models, ordered according to two questions: who owns the network and who operates it. Each of the possible business models is described and its policy implications are discussed.

New Architectures and Technologies for Software-Defined Radio Base Stations

Thu, 01 Jan 1970 00:00:00

Wireless communication standards are evolving very fast. Operators and system suppliers do not have the same philosophies when it comes to delivering the multitude of different mobile communication standards (UMTS FDD, HSDPA, HSUPA, WiMAX). To allow the operators of the infrastructure to reuse their existing sites, Alcatel is in the process of merging the different air-interface standards into a single base station architecture, based on Alcatel's Node B, using a software-defined radio approach. As a result, a single hardware solution will provide highly flexible usage of multiple frequency bands and multiple standards at the same time. Suitable Multi-Standard/Multi-Band approaches and architectures are being researched at Alcatel R&I Stuttgart. A first laboratory prototype for a Multi-Band Transceiver is available today and demonstrates the technical feasibility.

Feasibility Study of Mesh Networks for All-Wireless Offices

Thu, 01 Jan 1970 00:00:00

There is a fair amount of evidence that mesh (static multihop wireless) networks are gaining popularity, both in the academic literature and in the commercial space. Nonetheless, none of the prior work has evaluated the feasibility of applications on mesh through the use of deployed networks and real user traffic. The state of the art is the use of deployed testbeds with synthetic traces consisting of random traffic patterns. This paper evaluates the feasibility of a mesh network for an all-wireless office using traces of office users and an actual 21-node multi-radio mesh testbed in an office area.

Banning Wireless Doesn't Stop Users: Understand How to Protect Your Network and Support WiFi ...

Thu, 01 Jan 1970 00:00:00

Despite great strides in wireless LAN (WLAN) technology, many organizations continue to choose a "no-wireless" policy, meaning wireless deployments of any kind are expressly prohibited by organizational guidelines. The basic goal is to eliminate any occurrence of wireless access, sanctioned or unsanctioned, within a defined space or location. The rationale for such a policy can vary, ranging from security concerns to a perception of operational complexity and prohibitive costs.

Enabling Mobility in WiMAX Networks

Thu, 01 Jan 1970 00:00:00

This white paper provides an overview of the Worldwide interoperability for Microwave Access (WiMAX) technology. It examines the various deployment scenarios of WiMAX and discusses the need for mobility in WiMAX. It further describes the need for the Access Service Network (ASN) Gateway in WiMAX and the various challenges involved in developing the ASN Gateway. In the end, this paper details out Flextronics Software Systems' (FSS') SigASN - the signaling module of a WiMAX ASN Gateway; and WiMAX-related services provided by FSS.

Jigsaw: Solving the Puzzle of Enterprise 802.11 Analysis

Thu, 01 Jan 1970 00:00:00

The combination of unlicensed spectrum, cheap wireless interfaces and the inherent convenience of untethered computing have made 802.11-based networks ubiquitous in the enterprise. Modern universities, corporate campuses and government offices routinely deploy scores of access points to blanket their sites with wireless Internet access. However, while the fine-grained behavior of the 802.11 protocol itself has been well studied, the understanding of how large 802.11 networks behave in their full empirical complexity is surprisingly limited. This paper presents a system called Jigsaw that uses multiple monitors to provide a single unified view of all physical, link, network and transport-layer activity on an 802.11 network.

Is Wi-Fi Roaming Really Seamless?

Thu, 01 Jan 1970 00:00:00

One extremely beneficial aspect of Wi-Fi networks is mobility. For example, a person can walk through a facility while carrying on a conversation over a Wi-Fi phone or downloading a large file from a server. The Wi-Fi radio inside the user device automatically roams from one access point to another as needed to provide seamless connectivity.

Experiences With Multimedia Streaming Over 2.5G and 3G Networks

Thu, 01 Jan 1970 00:00:00

As third generation technologies become more widely deployed, mobile data users increasingly experience ubiquitous global network access across a variety of heterogeneous 2.5 and 3G technologies. Such provision of higher bandwidth in mobile environments promises greater access to rich multimedia content delivered to handheld or mobile devices such as PDAs, laptops and vehicles. This paper provides a thorough evaluation of the performance of multimedia streaming across heterogeneous Wireless Wide Area environments through measurements taken from real networks (GSM, GPRS and UMTS) using an unequal error protection architecture tool - vorbistreamer.

Intel Centrino Mobile Technology Reference Guide for WiMAX Networks

Thu, 01 Jan 1970 00:00:00

WiMAX (Worldwide Interoperability for Microwave Access) is a key component of Intel's broadband wireless strategy to deliver innovative mobile platforms for anytime, anywhere Internet connectivity. New and emerging multimedia applications and broadband remote access are driving the need for very high-speed wide area Internet access to mobile devices. WiMAX is an advanced technology solution, based on the IEEE 802.16-2005 standard, designed to meet this need, and to do so in a low-cost, flexible way. WiMAX networks are optimized for high-speed data and are expected to spur innovation in services, content, and new mobile devices.

Protecting Wireless Networks from Security Threats

Thu, 01 Jan 1970 00:00:00

There are two main types of wireless security attacks - unintentional and intentional. Unintentional attacks come from common devices that share the unlicensed spectrum with Wi-Fi, such as cordless phones and Bluetooth devices. Even devices not used for communication, such as microwave ovens, transmit RF in this spectrum, potentially disrupting Wi-Fi communications. Learn how to secure your network from these types of unintentional attacks and read this whitepaper written by experts in the field of layer one security.

Universal WiMAX for Fixed, Mobile, Converged and Private Operators

Thu, 01 Jan 1970 00:00:00

New IP-based standards developed by the IEEE 802.16 working group are greatly accelerating adoption of disruptive Broadband Wireless Access (BWA) technology. The latest standard for WiMAX, known as 802.16e-2005, stands to unify what has been a fragmented market. It promises so-called "Universal WiMAX" - one access technology capable of supporting fixed, nomadic and mobile services. The convergence of demand for all three on a single standard holds unprecedented hope for mass adoption, economies of scale, and lower costs, both for infrastructure and terminal equipment.

Security, Costs, Legal Conformity, Quality of Service: Stakes of WiFi Access for Visitors to ...

Thu, 01 Jan 1970 00:00:00

This white paper highlights the issues involved in providing Internet access to a company's visitors using wireless Wi-Fi technology. Wi-Fi access points provided for visitors to a company Wi-Fi guest access - be they customers, suppliers, partners or even staff from a separate entity - allow users to make the most of the time spent in the company. It means they stay in contact with their own ecosystem and can continue working, through access to their corporate Intranet, electronic messaging service, Web-based business applications or their partners Extranet.

Are You Ready for the All-Wireless Enterprise?

Thu, 01 Jan 1970 00:00:00

The advent of broadband wireless communications began what can only be called a genuine revolution. In just a few years, the vast majority of enterprise organizations have already began deploying Wireless LAN (WLANs), and over 100,000 public Wi-Fi HotSpot have been installed worldwide. The many advantages of untethered communications have ever made home wireless networks increasingly popular.

P2P-Based Roaming Between Home WLAN Hotspots

Thu, 01 Jan 1970 00:00:00

The increased amount of broadband Internet connections at home, combined with the low cost of WLAN access points and other WLAN hardware, has made it possible for individual end-users to contribute to the wireless landscape by allowing open access to their WLAN access points. Consumers' WLAN access points and emerging handsets equipped with WLAN capability provide an opportunity for P2P-type of wireless coverage. Current metropolitan areas are already to some extent covered by consumer home WLAN networks and can ideally form one big network which then can be used freely by members of a community. This paper concentrates on describing the current situation in P2P-based roaming between home WLAN hotspots, what are its pros and cons, and why it is being done.

Deploying Residential Wi-Fi Wireless LANs: RF Repeaters for Coverage and Reliability

Thu, 01 Jan 1970 00:00:00

Residential WLANs are used for the same purposes as are their enterprise counterparts - Internet access, peripheral and other resource sharing, access to shared applications, and convenience and mobility. For whereas the mission of an enterprise wireless-LAN deployment is to provide both coverage and capacity over a fairly large area, using microcellular configurations and thus intra-cell handoffs, residential deployments only rarely have more than one AP, which is usually embodied in an inexpensive single-box "Wireless router" configuration. It is thus of significant importance that this single box be able to provide both capacity and coverage over the area of the residence. And therein lays a significant challenge, the topic of this White Paper.

Intel WiMAX Connection 2250: The Path to the Mobile Internet - Establishing Leadership With ...

Thu, 01 Jan 1970 00:00:00

Service providers and equipment vendors around the world have begun to deploy WiMAX-based networks, making decisions that will shape the future of their respective businesses. Many service providers are seeing initial success using WiMAX based on the 802.16-2004 standard for fixed and nomadic applications such as last-mile broadband.

5-Step Plan for Securing Your Enterprise WLAN

Thu, 01 Jan 1970 00:00:00

Wi-Fi misuse, abuse, or attack can cause financial harm, including direct costs associated with investigation, response, down-time, and recovery; indirect losses due to decline in competitiveness and market value; and directed remedies and penalties caused by non-compliance with data privacy regulations. An effective network defense requires the ability to control all wireless activity that impacts your business. This paper details the five essential steps to securing an enterprise wireless LAN (WLAN). From safeguarding wireless clients and data to auditing and controlling Wi-Fi connections, this paper recommends best practices to ensure the safety and integrity of enterprise networks.

Evolution of Mobile Data

Thu, 01 Jan 1970 00:00:00

Learn the benefits of direct wireless broadband access and see comparisons of competing wireless broadband technologies. In the "Evolution of Mobile Data" white paper, you will discover real examples of Sprint mobile broadband applications in the business space.

Everyday Practices With Mobile Video Telephony

Thu, 01 Jan 1970 00:00:00

The mobile phone allowed people to communicate when and where they wanted, dramatically changing how audio telephony was integrated into daily life. With video telephony services now available on everyday mobile phones, comparable arguments are being made that this will change how people relate to and use video telephony. The mobile and personal natures of mobile phones remove factors that previously hindered use of video telephony. Mobility also brings new challenges and concerns that may hinder use of video telephony in particular contexts. With this in mind, the paper revisits the notion of video telephony but within the context of mobile phones.

How Smart Phones and Handheld Devices Enable Continuity of Operations and Emergency Response

Thu, 01 Jan 1970 00:00:00

Communication and ready information access are the keystones of effective government services. Never are they more urgent than when normal operations are disrupted--for example, by hazardous materials spills, accidents, weather, contamination, attack, or pandemic. During these and other emergencies, local, state, federal civilian, and federal defense agencies must coordinate their activities and follow operational procedures to save lives, minimize property loss, protect the environment, and achieve a timely and orderly recovery to normal operations.