Free information about Wireless and mobile computing http://e-articles.info/e/s/s/Wireless-and-mobile-computing/ en-us E-articles.info 2006 - 2009 The Sony Ericcson T700 is one of the phones that are connected the 3G Network that everyone is raving about. The http://e-articles.info/e/a/title/Sony-Ericsson-T700-Review/ http://e-articles.info/e/a/title/Sony-Ericsson-T700-Review/ Sat, 26 Sep 2009 00:33:17 GMT The Canon Pixma MP980 is a capable all-in-one device that prints, faxes, and copies documents in full colour 4,800x9,600-pixel resolution, thanks to a unique six colour ink bay that includes a special grey cartridge for more distinct greyscale photo prints. The AU$449 MP980 lends a hand to amateur photo enthusiasts with a large 3.5-inch LCD screen, an easy-to-use control panel, and a media card reader, but we're unsatisfied with the difficult wireless setup, the slower-than-average output speeds, and the inflated price... by Bozo http://e-articles.info/e/a/title/Canon-Pixma-MP980/ http://e-articles.info/e/a/title/Canon-Pixma-MP980/ Sat, 26 Sep 2009 01:41:22 GMT   Staying online could now be more possible, especially for people who are always on the go. Internet access is now made more convenient and easier with the advent of third-generation technology, which is massively used currently across the mobile telephone industry. Third generation technology or 3G is known for facilitating Internet connection through mobile phone networks... by Shadow Rodriguez http://e-articles.info/e/a/title/3G-for-Internet-Access-on-the-Go/ http://e-articles.info/e/a/title/3G-for-Internet-Access-on-the-Go/ Tue, 22 Sep 2009 02:49:27 GMT Basically, geocaching is a high-tech version of hideand- seek. Geocachers seek out hidden treasures utilising GPS coordinates posted on the Internet by those hiding the cache. Using a GPS unit (which can be bought for as little as £90 and used time and time again) you then trek out into the backwoods or urban jungles to find the hiding spot of the cache... by Dan Haskevitz http://e-articles.info/e/a/title/GEOCACHING/ http://e-articles.info/e/a/title/GEOCACHING/ Wed, 15 Oct 2008 03:57:32 GMT For a gamer, playing games is as natural as breathing. The ability to play vibrant games anywhere is always cherished. A well used phrase for new PSP users these days- often an ice breaker with other gamers- is “Do you know how to download games for psp?” In the old days nobody would contact you asking you how to download games for psp... by Aaron Novak http://e-articles.info/e/a/title/How-To-Download-Games-For-PSP/ http://e-articles.info/e/a/title/How-To-Download-Games-For-PSP/ Wed, 24 Sep 2008 04:23:37 GMT Made-for-mobile Web applications and widgets are new mobile Internet offerings specifically designed by highly skilled experts in the mobile industry to give you a Web-like experience on your phone without having to launch your mobile browser. These products offer the utility and convenience that you may have come to expect from the computer Internet world and are limited to a few traditional mobile phones, almost all smartphones, and all PDAs. Once downloaded to your phone, both types of applications are fully integrated with the capabilities of your mobile phone, smartphone, or PDA... by Renata Wirmann http://e-articles.info/e/a/title/Mobile-Web-applications-and-widgets/ http://e-articles.info/e/a/title/Mobile-Web-applications-and-widgets/ Mon, 25 Aug 2008 05:31:42 GMT Downloading ringtones is not the only way to get music to your mobile phone through the mobile Internet. Many of the latest mobile phone models can store music similar to an iPod from Apple or on any MP3 player. Wireless carriers have been eager to add iTunes-like digital music storefronts on their Web sites so that people can download music directly to their mobile phones... by Renata Wirmann http://e-articles.info/e/a/title/Finding-music-at-Sprint.com/ http://e-articles.info/e/a/title/Finding-music-at-Sprint.com/ Mon, 25 Aug 2008 06:39:47 GMT Watching mobile TV and video by using Verizon Wireless If you’re of a certain age, you might remember the teeny Sony TV that fit into a shirt pocket and that you could watch while walking down the street or waiting in line. Sony didn’t sell many of them because they weren’t what people wanted. Now, of course, you don’t need to buy an extra device... by Renata Wirmann http://e-articles.info/e/a/title/Watching-mobile-TV-and-video-by-using-Verizon-Wireless/ http://e-articles.info/e/a/title/Watching-mobile-TV-and-video-by-using-Verizon-Wireless/ Mon, 25 Aug 2008 07:47:52 GMT Wireless carriers (mobile network operators) are the organizations that provide mobile phones and value-added services. The carriers provide you with the ability to make and receive phone calls, send and receive text messages, access the mobile Web, take and share pictures, find driving directions, and do so much more — all from your mobile phone. Not all wireless carriers are alike; they come in all shapes and sizes... by Graham Camp http://e-articles.info/e/a/title/Wireless-Carriers/ http://e-articles.info/e/a/title/Wireless-Carriers/ Sat, 23 Aug 2008 08:55:57 GMT You can choose among, and access from your mobile phone, many different wireless data services and options. This list describes some of the more common mobile Internet options: - Text messaging: Text messaging service, commonly referred to as SMS (Short Message Service), lets you send and receive alphanumeric messages on your phone. Pay-as-you go text messaging can be quite expensive... by Graham Camp http://e-articles.info/e/a/title/Wireless-data-services-options/ http://e-articles.info/e/a/title/Wireless-data-services-options/ Fri, 22 Aug 2008 09:23:15 GMT People have become accustomed to rich, interactive Internet experiences on their computers, an experience that often cannot be had with a mobile Web browser. The reason for this (and it is deceptively simple): The underlying technology of the Internet browsers on your computer and on your phone differs significantly. Because of this difference, less than 1 percent of Web sites that now exist can be viewed properly, if at all, on a mobile phone (unless the user has an iPhone, BlackBerry, or a full Internet-like browser on their smartphone or PDA)... by Graham Camp http://e-articles.info/e/a/title/Why-don't-all-Web-sites-show-up-on-your-phone/ http://e-articles.info/e/a/title/Why-don't-all-Web-sites-show-up-on-your-phone/ Thu, 21 Aug 2008 10:31:20 GMT Most people in the UK who use the Internet do so via a broadband connection and router that is directly connected by a wire to their PC or laptop. Of course this is perfectly acceptable, but what advantages could “going wireless” bring and how do you go about this? Well let’s start by explaining what “wireless” means. Well pretty obviously it means that hardware devices, such as your PC and the router that connects you to the internet, transmit information between each other without the need for a wire; instead they use radio signals... by The PC Support Group http://e-articles.info/e/a/title/Essential-Guide-to-Going-Wireless-in-Your-Home/ http://e-articles.info/e/a/title/Essential-Guide-to-Going-Wireless-in-Your-Home/ Mon, 14 Jul 2008 11:39:25 GMT Mobile and wireless have known a success that is beyond the most optimistic initial expectations. In some countries, namely European ones, the penetration of mobile communications is around 100%, which means that virtually everyone capable of using a mobile phone has (at least) one. How did we get here? What were the reasons for this huge success? These questions have been discussed over and over, and are not addressed here... by Jidah Temre http://e-articles.info/e/a/title/Evolution-of-Mobile-and-wireless/ http://e-articles.info/e/a/title/Evolution-of-Mobile-and-wireless/ Thu, 15 May 2008 12:47:30 GMT Predictive Dialer makes dialing process easy for call centers, especially those that deal in outbound business calling scenario. Predictive dialer is a computerized system that automatically dials thousands of telephone numbers and connects agents with either existing or prospective customers. All the agents are linked up with the server where live calls are transferred as per the availability of agents... by smith jones http://e-articles.info/e/a/title/Predictive-dialer:-Start-saving-your-money.-Right-now/ http://e-articles.info/e/a/title/Predictive-dialer:-Start-saving-your-money.-Right-now/ Thu, 21 Feb 2008 13:55:35 GMT The wireless Internet scenario exhibits several peculiar characteristics that need to be considered in service provisioning. Mobility of users and access devices is pushed to the extreme. Users can connect to the network from ubiquitous points of attachment and wireless portable devices can roam by maintaining continuous connectivity... by Ted Highway http://e-articles.info/e/a/title/Context-Aware-Service-Provisioning-over-the-Wireless-Internet/ http://e-articles.info/e/a/title/Context-Aware-Service-Provisioning-over-the-Wireless-Internet/ Tue, 25 Sep 2007 14:23:40 GMT Laptops are everywhere, one should need laptop like wrist watch, technology is running fast to make life easier, in today’s world, Laptop is on demand. Here are some points, why you need laptop skin or laptop decal or say laptop Sticker for you notebook. Make over to your laptop This is the time to give new look to your laptop... by Samir Sharma http://e-articles.info/e/a/title/Why-do-you-need-Laptop-Skin-for-your-notebook/ http://e-articles.info/e/a/title/Why-do-you-need-Laptop-Skin-for-your-notebook/ Sun, 09 Sep 2007 15:31:45 GMT Each has its place. In some circumstances, it may be difficult for a tenant to physically get to a fixed pull chair switch whereas a pendant will work anywhere in an apartment or facility. On the other hand, many independent seniors will resent having to wear a pendant... by Danny Rink http://e-articles.info/e/a/title/Which-Is-Better:-Fixed-Wall-Switches-or-Wireless-Emergency-Pendants/ http://e-articles.info/e/a/title/Which-Is-Better:-Fixed-Wall-Switches-or-Wireless-Emergency-Pendants/ Fri, 20 Jul 2007 16:39:50 GMT Open up New ways to minimize the distances between wireless networks WiMAX is the abbreviation of Worldwide Interoperability for Microwave Access. This new wireless technology is based on standards of IEEE 802.16, so to bring a greater broadband speed and to give a chance of cheap communication over the wireless network... by Sam Mike http://e-articles.info/e/a/title/WiMAX:-The-Upcoming-Wireless-Technology/ http://e-articles.info/e/a/title/WiMAX:-The-Upcoming-Wireless-Technology/ Sat, 16 Jun 2007 17:47:55 GMT The growing consensus is that in the New Economy access to knowledge is critical for economic success. Unfortunately the economic power of the Internet is not equally distributed. Recent Internet usage statistics show that there are currently 429 million Internet users worldwide... by Jack Johnson http://e-articles.info/e/a/title/HOW-WIRELESS-CAN-CHANGE-THE-WORLD/ http://e-articles.info/e/a/title/HOW-WIRELESS-CAN-CHANGE-THE-WORLD/ Sun, 13 May 2007 18:55:15 GMT Voice  communication  became  possible  when  Alexander Graham Bell invented the telephone on March 10, 1876. His experiments with his assistant Thomas Watson finally proved successful  when  the  first  vocal  sentence  was  transmitted: “Watson, come here; I want you.” The telephone was demonstrated to the world at the  1876 Centennial Exposition in Philadelphia, Pennsylvania, and led to the creation of the Bell Telephone Company in 1877... by Steve Galloway http://e-articles.info/e/a/title/History-of-voice-Communications/ http://e-articles.info/e/a/title/History-of-voice-Communications/ Sat, 12 May 2007 19:23:20 GMT Wireless devices are not always cellular phones. In fact, they do not even need voice capabilities. Does you home PC have a telephone receiver hanging on it? Of course not: The computer’s primary function is to do meaningful data crunching! Personal digital assistants and pocket PCs were created to provide a certain level of support for the mobile user, which could only previously be available on a laptop PC, but smaller and lighter... by Steve Galloway http://e-articles.info/e/a/title/PDA-and-Pocket-PC-Technologies/ http://e-articles.info/e/a/title/PDA-and-Pocket-PC-Technologies/ Sat, 12 May 2007 20:31:25 GMT As we mentioned earlier, humans have always sought to communicate efficiently. Who wants to endlessly repeat something or have to deal with not being understood? The most successful persons throughout history have been those who communicated well on some level. Perhaps it wasn’t through speech—an engineer might choose a technical drawing to entirely communicate an idea and avoid talking at all... by Jack Johnson http://e-articles.info/e/a/title/WIRELESS-EFFICIENCY/ http://e-articles.info/e/a/title/WIRELESS-EFFICIENCY/ Tue, 08 May 2007 21:39:30 GMT Security-wise, antennas and amplifiers give an enormous edge to both the skillful attacker and defender. From the attacker's perspective, antennas give distance (resulting in physical stealth), better signal quality (resulting in more data to eavesdrop on and more bandwidth to abuse) and higher power output (essential in Layer 1 DoS and man-in-the-middle attacks). From the defender's perspective, correctly positioned antennas limit the network boundaries and lower the risk of network detection while reducing the space for attackers to maneuver... by Hazrul Aaron http://e-articles.info/e/a/title/Wireless-Antennas/ http://e-articles.info/e/a/title/Wireless-Antennas/ Sat, 05 May 2007 22:47:35 GMT Early attempts at wireless data transmission evolved around proprietary technologies. Usually, the cost to deploy such networks limited their use to that of large companies. The services  offered  usually  revolved  around  some form of dispatch service... by Steve Galloway http://e-articles.info/e/a/title/Wireless-Internet/ http://e-articles.info/e/a/title/Wireless-Internet/ Fri, 04 May 2007 23:55:40 GMT Information-based horizontal applications include directories and guides, which users can access and customize according to their interests, such as headline news, business news, specific company news tracking, weather, sports results, or stock information. Wireless Internet applications will add value to news and information by increasing users’ ability to access up-to-theminute time-sensitive news while mobile. The one thing we can all agree about is that if you wait too long, it’s no longer news... by Jack Johnson http://e-articles.info/e/a/title/News-and-Information-Wireless-Internet-applications/ http://e-articles.info/e/a/title/News-and-Information-Wireless-Internet-applications/ Thu, 26 Apr 2007 01:23:45 GMT There are a number of ways to categorize VPNs, but the three main design varieties are network-to-network, host-to-network, and host-to- host. Network-to-Network Also referred to as site-to-site, this term is often used to describe a VPN tunnel between two geographically separate private networks. This type of VPN is commonly used when the LANs have to be connected across a public network so that users on both networks can access resources located on the other LAN, as if they were located inside their home network... by Krelle Xijao http://e-articles.info/e/a/title/VPN-Topologies-Review:-The-Wireless-Perspective/ http://e-articles.info/e/a/title/VPN-Topologies-Review:-The-Wireless-Perspective/ Sun, 22 Apr 2007 02:31:50 GMT Security video monitoring applications help to visually assure that valuable assets are not eroded or destroyed by unauthorized users. Traditionally, security video monitoring was limited to on-site video monitors that security personnel viewed as either videotapes or as real-time images. The introduction of low-cost digital video cameras and data connections allow for the remote location of video cameras... by Jack Johnson http://e-articles.info/e/a/title/SECURITY-VIDEO-MONITORING/ http://e-articles.info/e/a/title/SECURITY-VIDEO-MONITORING/ Tue, 17 Apr 2007 03:39:55 GMT While Internet access at work or home is easily accomplished with fixed connections, wireless access is beginning to come up to speed and offer the benefit of mobility albeit over short distances.  This  growing  wireless  access  technology  is  called Wireless Local Area Network (WLAN) access and is essentially  a  networking  system that  creates  a  wireless  connection between a device, typically a laptop PC, and a network or the Internet. The power and size requirements of WLAN device cards make it more suitable for laptops and some PDAs than for smaller handheld devices such as cellular phones... by Jack Johnson http://e-articles.info/e/a/title/WLANS-AND-BLUETOOTH-~-THE-NEW-ACCESS-POINTS/ http://e-articles.info/e/a/title/WLANS-AND-BLUETOOTH-~-THE-NEW-ACCESS-POINTS/ Tue, 17 Apr 2007 04:47:15 GMT Navigation and tracking are practical services that will be highly valued by users, in that all these same services can also be linked to advertising and commerce to provide, for example, directions to the nearest Italian restaurant, or to a store with current sales promotions. Location-based services will offer value to applications that benefit from geographically filtered information. These applications can eliminate the effort required to locate or request data by first determining what data might be relevant to the user’s location... by Steve Galloway http://e-articles.info/e/a/title/LOCATION-BASED-SERVICES/ http://e-articles.info/e/a/title/LOCATION-BASED-SERVICES/ Mon, 16 Apr 2007 05:55:20 GMT This category includes both horizontal and vertical applications and services that are enhanced by wireless. The applications and services described in this section will often make use of portable computers such as laptops, which are able to provide value primarily due to connections in locations where connections are not easily obtained. A wide range of industries will benefit from wireless connectivity and services; these include intranet and company database access, plus mobile office applications such as file  transfer and workgroup applications... by Jack Johnson http://e-articles.info/e/a/title/ACCESS-AND-WIRELESS-CONNECTIVITY-ENABLED-SOLUTIONS/ http://e-articles.info/e/a/title/ACCESS-AND-WIRELESS-CONNECTIVITY-ENABLED-SOLUTIONS/ Wed, 11 Apr 2007 06:23:25 GMT Bluetooth is an omnidirectional wireless technology that provides limited-range voice and data transmission over the unlicensed 2.4-GHz frequency band, allowing connections with a wide variety of fixed and portable devices that normally would have to be cabled together. Up to eight devices - one master and seven slaves - can communicate with one another in a socalled piconet at distances of up to 30 feet... by Alessia Krog http://e-articles.info/e/a/title/What-is-BlueTooth(q)-~-General-discussion-about-BlueTooth/ http://e-articles.info/e/a/title/What-is-BlueTooth(q)-~-General-discussion-about-BlueTooth/ Tue, 10 Apr 2007 07:31:30 GMT There are three major key benefits: •   Interconnection  to  other  online  devices. American wireless users are only now starting to use phones that are capable of two-way text messaging. One problem is that there won’t be many other users to exchange text messages with until more users have a newer SMS-capable phone... by Jack Johnson http://e-articles.info/e/a/title/BENEFITS-OF-WIRELESS-IM-APPLICATIONS/ http://e-articles.info/e/a/title/BENEFITS-OF-WIRELESS-IM-APPLICATIONS/ Tue, 10 Apr 2007 08:39:35 GMT Service providers or carriers have existed in the past by charging for voice calls made on systems that use licensed spectrum. The cost of this spectrum is increasing, with huge amounts of money being paid for 3G spectrum to enable high-speed data services in addition to quality voice calls. But licensed spectrum won’t be enough for the service operator of the future... by Steve Galloway http://e-articles.info/e/a/title/SERVICE-PROVIDERS-OF-THE-FUTURE/ http://e-articles.info/e/a/title/SERVICE-PROVIDERS-OF-THE-FUTURE/ Wed, 28 Mar 2007 09:47:40 GMT EUROPEAN AND JAPANESE ENVY Why does it seem that most of the rest of the world has a better communications system? We often hear that Europe and Japan are ahead in terms of wireless technology; surprised Americans have a hard time understanding why they don’t have the latest in devices and systems. Although there are many factors that have contributed to the apparent head start of Europe and Japan, one of the most important is geographic size and population density. In short, they simply have less space to cover and often more people in that smaller space... by Steve Galloway http://e-articles.info/e/a/title/Wireless-Internet:-Market-case-studies/ http://e-articles.info/e/a/title/Wireless-Internet:-Market-case-studies/ Mon, 26 Mar 2007 10:55:45 GMT You probably already know that short messaging service (SMS) or text messaging is getting to be a pretty hot topic these days. Everyone has heard about the SMS explosion in Europe and Asia—5 billion in March 2000, 9 billion in September 2000, and over 53 billion in the first 3 months of 2001. Amazing isn’t it?   Then again—short messaging started a long time ago, before digital phones or cellular even! Back when all they had was an alphabet and two towers—or two hilltops to be exact... by Steve Galloway http://e-articles.info/e/a/title/MESSAGING-~-THE-FIRST-WIRELESS-INTERNET-APPLICATION/ http://e-articles.info/e/a/title/MESSAGING-~-THE-FIRST-WIRELESS-INTERNET-APPLICATION/ Sun, 11 Feb 2007 11:23:50 GMT Wireless communication systems have evolved through several stages of multiple-access control. The foremost controllable resource has always been the frequency spectrum. Other resources such as time, code, and space were initially manipulated in a very precarious and, therefore, ineffective manner... by Loran Duval http://e-articles.info/e/a/title/Duplexing-in-Wireless-communication/ http://e-articles.info/e/a/title/Duplexing-in-Wireless-communication/ Mon, 29 Jan 2007 12:31:55 GMT Depending on how much coordination is required to access the shared resources, the access methods may fall into the following categories: Scheduled Multiple-Access Methods. The access methods in this category make use of the signal insulation principle in which the information of different sources is transmitted on nonoverlapping channels. In this case, collision does not occur... by Loran Duval http://e-articles.info/e/a/title/Multiple-Acess-Categories-in-Wireless-Systems/ http://e-articles.info/e/a/title/Multiple-Acess-Categories-in-Wireless-Systems/ Sat, 27 Jan 2007 13:39:15 GMT Some service requirements that are unique or essential to wireless networks call for IN concepts, as exemplified below: Roaming. Mobility, a feature inherent to a wireless network, creates situations in which subscribers may roam out of their local calling area or out of their service provider’s area. To enable subscribers to still make use of their wireless services while in a roaming condition, a seamless network must be conceived... by Laura Ficzperich http://e-articles.info/e/a/title/Wireless-Service-Requirements/ http://e-articles.info/e/a/title/Wireless-Service-Requirements/ Fri, 19 Jan 2007 14:47:20 GMT This article lists and briefly describes some of the important identification codes and parameters that appear in messages or orders. They are shown in terms of their TIA/EIA/IS-95 identification, name, and description, in that sequence: ACC CHAN—Number of Access Channels. This field conveys the number of access channels associated with the paging channel... by Angela Tuckson http://e-articles.info/e/a/title/CDMA-~-Messages-Orders-and-Parameters/ http://e-articles.info/e/a/title/CDMA-~-Messages-Orders-and-Parameters/ Tue, 09 Jan 2007 15:55:25 GMT Wireless systems can be classified according to whether they have a narrowband or wideband architecture. Narrowband systems support low-bit-rate transmission, whereas wideband systems support high-bit-rate transmission. A system is defined as narrowband or wideband depending on the bandwidth of the transmission physical channels with which it operates... by Laura Ficzperich http://e-articles.info/e/a/title/Narrowband-and-Wideband-Systems/ http://e-articles.info/e/a/title/Narrowband-and-Wideband-Systems/ Fri, 05 Jan 2007 16:23:30 GMT The GSM project embraces an ambitious set of targets: International roaming Open architecture High degree of flexibility Easy installation Interoperation with ISDN (Integrated Services Digital Networks), CSPDN (Circuit-Switched Public Data Network), PSPDN (Packed- Switched Public Data Network), and PSTN (Public-Switched Telephone Network) High-quality signal and link integrity High spectral efficiency Low-cost infrastructure Low-cost, small terminals Security features These objectives have been gradually achieved and a broad collection of services are provided. The GSM services are grouped into three categories: 1. Teleservices (TS) 2... by Loran Duval http://e-articles.info/e/a/title/Features-and-Services-of-GSM/ http://e-articles.info/e/a/title/Features-and-Services-of-GSM/ Tue, 02 Jan 2007 17:31:35 GMT This article outlines some call management procedures, namely, mobile initialization, location update, authentication, ciphering, mobile station termination, mobile station origination, handover, and call clearing. Mobile Initialization There are three main goals of the mobile initialization procedure: 1. Frequency synchronization 2... by Loran Duval http://e-articles.info/e/a/title/GSM-Call-Management-Procedures/ http://e-articles.info/e/a/title/GSM-Call-Management-Procedures/ Sun, 31 Dec 2006 18:39:40 GMT The signal may be described in several domains, and an appropriate manipulation of the signals within these domains may lead to effective use of the transmission medium. The signal domains most commonly used for access purposes are frequency, time, code, and space. Frequency Domain The radio spectrum is a precious resource, the quintessence of wireless communication systems... by Loran Duval http://e-articles.info/e/a/title/Wireless-Signal-Domains/ http://e-articles.info/e/a/title/Wireless-Signal-Domains/ Tue, 26 Dec 2006 19:47:45 GMT The need for increased capacity was the great motivation for the advent of American digital cellular technology. As demand for wireless services increased, mainly in dense urban areas, the old analog standard, known as AMPS (Advance Mobile Phone Service), proved inadequate to satisfy the demand. Time Division Multiple Access technology, based on the EIA/TIA/IS- 54 specifications (later on enhanced and renamed EIA/TIA/IS-136) was the first solution to the capacity problem of the old analog system... by Angela Tuckson http://e-articles.info/e/a/title/CDMA-~-Features-and-services/ http://e-articles.info/e/a/title/CDMA-~-Features-and-services/ Tue, 19 Dec 2006 20:55:50 GMT The signal may be described in several domains, and an appropriate manipulation of the signals within these domains may lead to effective use of the transmission medium. The signal domains most commonly used for access purposes are frequency, time, code, and space. Frequency Domain The radio spectrum is a precious resource, the quintessence of wireless communication systems... by Laura Ficzperich http://e-articles.info/e/a/title/Wireless-Signal-Domains/ http://e-articles.info/e/a/title/Wireless-Signal-Domains/ Mon, 18 Dec 2006 21:23:55 GMT Wireless networks are multiuser systems in which information is conveyed by means of radio waves. In a multiuser environment, access coordination can be accomplished via several mechanisms: by insulating the various signals sharing the same access medium, by allowing the signals to contend for the access, or by combining these two approaches. The choice for the appropriate scheme must take into account a number of factors, such as type of traffic under consideration, available technology, cost, complexity... by Laura Ficzperich http://e-articles.info/e/a/title/Multiple-Access-in-Wireless-networks/ http://e-articles.info/e/a/title/Multiple-Access-in-Wireless-networks/ Thu, 09 Nov 2006 22:31:15 GMT This category covers applications that are primarily designed for leisure and entertainment, such as music and video-movies, horoscopes, jokes, and soap opera updates. Games, sporting events, icons, ring-tones, postcards, and video clips are included in this category. Most of these will be multifunctional, provide information and advertising, and may change according to season or nature of the event... by Jack Johnson http://e-articles.info/e/a/title/ENTERTAINMENT-AND-LIFESTYLE-MOBILE-APPLICATIONS/ http://e-articles.info/e/a/title/ENTERTAINMENT-AND-LIFESTYLE-MOBILE-APPLICATIONS/ Sat, 21 Oct 2006 23:39:20 GMT Unlike desktop PCs, portable systems don’t have standard expansion slots for the peripheral device connections. The expansion slots in a desktop computer allow additional devices to be attached to the computer. However, due to size and weight constraints, these slots are not available in the portable computers... by Alan Stark http://e-articles.info/e/a/title/PC-Cards-types;-How-to-add-and-remove-PC-Cards-from-a-mobile-computer/ http://e-articles.info/e/a/title/PC-Cards-types;-How-to-add-and-remove-PC-Cards-from-a-mobile-computer/ Sat, 14 Oct 2006 01:47:25 GMT ARDIS (DATATAC) Advanced Radio Data Information Services (Ardis) sometimes referred to as the DataTAC network, is a two-way radio service that is based on Motorola’s RD-LAP technology. It was originally created and jointly owned by Motorola and IBM to serve IBM field technicians. Coverage includes about 90 percent of the urban business population in the U... by Steve Galloway http://e-articles.info/e/a/title/Proprietary-Networks/ http://e-articles.info/e/a/title/Proprietary-Networks/ Thu, 21 Sep 2006 02:55:30 GMT A battery allows a portable computer to operate without an AC power source, thereby making it portable in the true sense. (Otherwise, you would need very long extension cords.) Portable computers include power management functions (either built-in or through special device drivers)... by Alan Stark http://e-articles.info/e/a/title/How-to-handle-and-maximize-the-battery-performance-of-a-mobile-computer/ http://e-articles.info/e/a/title/How-to-handle-and-maximize-the-battery-performance-of-a-mobile-computer/ Sat, 16 Sep 2006 03:23:35 GMT Although the preceding architectures are specific to wireless LAN environments, employees that are outside the coverage area are required to connect through wireless carriers that provide support for a wireless wide area network (WAN) environment. There are several wireless WAN protocols used all over the world. Code Division Multiple Access (CDMA) With CDMA, a large number of users are able to access wireless channels on demand... by Judy Urman http://e-articles.info/e/a/title/Wireless-WANS/ http://e-articles.info/e/a/title/Wireless-WANS/ Fri, 25 Aug 2006 04:31:40 GMT In order to facilitate a mobile e-commerce environment, participation of several partners is required, namely: Independent hardware vendors (IHVs) Independent software vendors (ISVs) Mobile device manufacturers Service providers (SPs) Wireless operators (or carriers) Note  Connecting all these participants together to create a viable solution are systems integrators with focused practices in mobile e-commerce implementation. Wireless Hardware There are numerous devices that are wireless-enabled to facilitate an efficient mobile workforce. Some of the top companies that provide these devices are: Compaq: The makers of iPAQ handheld computers and notebook PCs... by Judy Urman http://e-articles.info/e/a/title/Facilitators-of-a-Wireless-Environment/ http://e-articles.info/e/a/title/Facilitators-of-a-Wireless-Environment/ Thu, 24 Aug 2006 05:39:45 GMT As previously mentioned, RC4 is an encryption algorithm used to scramble data so completely that it would take years to decipher using current technology. What makes RC4 so powerful is its speed and strength. To analyze RC4, we must first begin with some definitions... by Brian Rodrigues http://e-articles.info/e/a/title/Wireless-Network-Privacy-~-Advantages-and-disadvantages-of-RC4-Encryption/ http://e-articles.info/e/a/title/Wireless-Network-Privacy-~-Advantages-and-disadvantages-of-RC4-Encryption/ Fri, 18 Aug 2006 06:47:50 GMT Handheld computing devices, or personal data assistants (PDAs), are rapidly growing in popularity. Along with the growing use of PDAs has come a corresponding growth in the demand for wireless network connectivity, auditing, and management. Consider the advantages of being able to check your email anywhere in your house or office with only a few taps of a stylus—and no boot-up time... by Brian Rodrigues http://e-articles.info/e/a/title/Handheld-Devices/ http://e-articles.info/e/a/title/Handheld-Devices/ Thu, 17 Aug 2006 07:55:55 GMT Prior to deploying any live wireless equipment in your enterprise, we recommend that you create a lab and test everything. Similarly, a wireless security expert will need a test lab of her own for research and development. A wireless test lab is completely different from your ordinary computer lab... by Brian Rodrigues http://e-articles.info/e/a/title/How-to-Construct-Your-Live-Wireless-Equipment-Test-Lab/ http://e-articles.info/e/a/title/How-to-Construct-Your-Live-Wireless-Equipment-Test-Lab/ Thu, 17 Aug 2006 08:23:15 GMT The 802.11 standard defines the protocols that govern all Ethernet-based wireless traffic. However, within this standard exist several sub-standards that compete with each other for a place in the market... by Brian Rodrigues http://e-articles.info/e/a/title/Wireless-Network-Protocols-~-The-802.11-Standard/ http://e-articles.info/e/a/title/Wireless-Network-Protocols-~-The-802.11-Standard/ Thu, 17 Aug 2006 09:31:20 GMT Almost everyone uses at least one antenna each day. In fact, the majority of people use antennas for many conveniences in their daily life, whether they realize it or not. Devices such as keyless entry systems, freeway toll passes, satellite TV systems, pagers, cell phones, and wireless networks all require antennas... by Brian Rodrigues http://e-articles.info/e/a/title/Types-advantages-and-disadvantages-of-antennas-in-wireless-communication/ http://e-articles.info/e/a/title/Types-advantages-and-disadvantages-of-antennas-in-wireless-communication/ Wed, 16 Aug 2006 10:39:25 GMT We know that 802.11a can be faster than 802.11b... by Brian Rodrigues http://e-articles.info/e/a/title/Wireless-Network-Protocols-~-The-802.11a-Versus-802.11b-Standard/ http://e-articles.info/e/a/title/Wireless-Network-Protocols-~-The-802.11a-Versus-802.11b-Standard/ Wed, 16 Aug 2006 11:47:30 GMT Clients exist on both wireless and wired networks. A client can range from anything such as a Network Attached Storage (NAS) device, to a printer, or even a server. In a typical ad-hoc network, there are no servers or printers—just other individuals' computers... by Brian Rodrigues http://e-articles.info/e/a/title/Wireless-Attacks-~-Client-to-Client-Hacking/ http://e-articles.info/e/a/title/Wireless-Attacks-~-Client-to-Client-Hacking/ Tue, 15 Aug 2006 12:55:35 GMT Slideshows are an age-old photographic tradition. Digital cameras make it easier than ever to present your images to many people at once. Most digicams have a "video out" capability that lets you connect your camera directly to a television for playback on a large screen... by Marieta Leke http://e-articles.info/e/a/title/How-To-Present-a-Digital-Slideshow/ http://e-articles.info/e/a/title/How-To-Present-a-Digital-Slideshow/ Sun, 13 Aug 2006 13:23:40 GMT Although it is one thing for organizations to keep up with the latest industry trends, making it happen in everyday life is a totally different story. The following are some of the key concerns of enterprises that are contemplating a mobile e-commerce strategy: Security: Wireless networks are very easy to break into and difficult to monitor. Your enterprise assets must be protected... by Judy Urman http://e-articles.info/e/a/title/Concerns-for-Mobile-Enterprises/ http://e-articles.info/e/a/title/Concerns-for-Mobile-Enterprises/ Sun, 13 Aug 2006 14:31:45 GMT MiniStumbler is a very user-friendly wireless network scanner that listens for beacon signals coming from open and broadcasting WLANs. In addition, this program will provide a plethora of information that makes it very useful for both hackers and the security professionals. As you will see, MiniStumbler might be small, but it packs a load of power in its functionality... by Brian Rodrigues http://e-articles.info/e/a/title/WLAN-Broadcasting-~-MiniStumbler-~-a-wireless-network-scanner/ http://e-articles.info/e/a/title/WLAN-Broadcasting-~-MiniStumbler-~-a-wireless-network-scanner/ Fri, 11 Aug 2006 15:39:50 GMT About the same time WECA approved the 802.11 standard, several other types of wireless technologies were being introduced. Although a few have made a rather impressive niche in the Personal Area Network (PAN) market, the only other WLAN technology that came close to competing with 802... by Brian Rodrigues http://e-articles.info/e/a/title/Wireless-Network-Protocols-~-Understanding-HomeRF-and-IrDA/ http://e-articles.info/e/a/title/Wireless-Network-Protocols-~-Understanding-HomeRF-and-IrDA/ Wed, 09 Aug 2006 16:47:55 GMT There are various wireless communication protocols. These technologies range in scope from long distance WLANs to one-meter IrDA devices. Each of these technologies has its niche, as well as its attendant strengths and weaknesses... by Brian Rodrigues http://e-articles.info/e/a/title/Wireless-Network-Protocols-~-Advantages-and-Disadvantages-of-Bluetooth/ http://e-articles.info/e/a/title/Wireless-Network-Protocols-~-Advantages-and-Disadvantages-of-Bluetooth/ Mon, 07 Aug 2006 17:55:15 GMT The Wired Equivalent Privacy protocol is incorporated as part of the IEEE 802.11b protocol. Actually, the standard only calls for 40-bit WEP, but almost all vendors offer up to 128-bit WEP... by Brian Rodrigues http://e-articles.info/e/a/title/Wireless-Privacy-Protocols-~-WEP-detailed/ http://e-articles.info/e/a/title/Wireless-Privacy-Protocols-~-WEP-detailed/ Sat, 05 Aug 2006 18:23:20 GMT Rogue access points are those connected to a network without planning or permission from the network administrator. For example, we know one administrator in Dallas who just did his first wireless security scan (war driving) on his eight-building office campus. To his surprise, he found over thirty access points... by Brian Rodrigues http://e-articles.info/e/a/title/Wireless-Attacks-~-Rogue-Access-Points/ http://e-articles.info/e/a/title/Wireless-Attacks-~-Rogue-Access-Points/ Sat, 05 Aug 2006 19:31:25 GMT There are a variety of ways to get photo-quality prints from your digital images. You can make them yourself with a printer at home, or have a photo finisher do the work for you. Many camera stores offer photo finishing from digital images... by Marieta Leke http://e-articles.info/e/a/title/How-To-Get-Photo-Quality-Prints/ http://e-articles.info/e/a/title/How-To-Get-Photo-Quality-Prints/ Wed, 02 Aug 2006 20:39:30 GMT When a surveillance attack is either impossible or too difficult, war driving is an effective alternative. In many situations, war driving follows and adds information to a prior surveillance attack. Conversely, the information obtained from random war driving often leads to a surveillance attack on a discovered location... by Brian Rodrigues http://e-articles.info/e/a/title/Wireless-Attacks-~-War-Driving/ http://e-articles.info/e/a/title/Wireless-Attacks-~-War-Driving/ Tue, 01 Aug 2006 21:47:35 GMT Despite the prevalence of standards committees in the wireless industry, there is no single unifying standard. It is important for enterprises to consider all the aspects involved in mobile support while contemplating a strategy for mobile e-commerce. Some of the key criteria in choosing a wireless network specification include: Average size of transfers Number of devices in the wireless network Others Range of transmission Security measures Speed of network Wireless networks may operate in one of two modes—on demand and infrastructure mode... by Judy Urman http://e-articles.info/e/a/title/Wireless-Communication-Platforms-for-LANS/ http://e-articles.info/e/a/title/Wireless-Communication-Platforms-for-LANS/ Sat, 22 Jul 2006 22:55:40 GMT Denial-of-service (DoS) attacks are those that prevent the proper use of functions or services. Such attacks can also be extrapolated to wireless networks. To understand this, we must first consider how wireless 802... by Brian Rodrigues http://e-articles.info/e/a/title/Wireless-Attacks-~-Jamming-(Denial-of-Service)/ http://e-articles.info/e/a/title/Wireless-Attacks-~-Jamming-(Denial-of-Service)/ Fri, 21 Jul 2006 23:23:45 GMT A popular way to electronically share pictures these days is via online photo services that publish web page galleries of your images. Only a few years ago, setting up an online gallery was a cumbersome process requiring some knowledge of web page design. But easy-to-use online services such as Flickr have streamlined this process so that anyone with an Internet connection can publish photos... by Marieta Leke http://e-articles.info/e/a/title/How-Do-I-Share-Pictures-on-the-Web/ http://e-articles.info/e/a/title/How-Do-I-Share-Pictures-on-the-Web/ Tue, 11 Jul 2006 01:31:50 GMT No technology works in a vacuum. Many entities work at different levels to bring the technology to a more mature and usable state. Standards and specifications are first conceived, developed, and then implemented... by Judy Urman http://e-articles.info/e/a/title/Wireless-Industry-Standards/ http://e-articles.info/e/a/title/Wireless-Industry-Standards/ Mon, 10 Jul 2006 02:39:55 GMT