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The Sprint WiMax service operates as fast as 4Mbps. One early WiMax adopter says Xohm is delivering good connection speeds: "When it first started I was getting about 2.
And there's the benefit of having high-speed access anywhere you happen to be: "Time is money. If you have five to six salespeople looking up pricing with clients on the [phone] line waiting for an answer, the faster response time makes a big difference in customer satisfaction," Levy says. WiMax works well if you do business locally Michael Thelander, CEO at the market researcher Signals Research Group, warns that what may be good for one small business owner in Baltimore may not be the answer for a Fortune company.
But larger companies want broadband data wherever they are," says Thelander. And even if such limitations can be overcome using other complementary backbones or equipments optical fibers or microwaves links, remote switching units. The paper is organized as follows. Section III describes why and how WiMAX will be a key element in this new important worldwide objective to provide an equitable and affordable access to ICTs infrastructure and services.
And the paper ended with the conclusion. It is a broadband wireless technology that supports fixed, nomadic, portable and mobile access. WiMAX is largely supported by the computer and the telecommunications industry, cost-effective and standard base. It is engineered to deliver the latest type of ubiquitous fixed and mobile services such as Voice 0ver Internet Protocol VoIP , Information Technology and Video at very low cost.
WiMAX systems are able to cover a large geographical area, up to 50 km and to deliver significant bandwidth to end-users up to 72 Mbps. To meet the requirements of different types of access, two versions of WiMAX have been defined. The first is based on IEEE The second version is designed to support portability and mobility, and will be based on the IEEE The IEEE Both of these technologies allow subcarriers to be adaptively modulated e. On the later amendments of the IEEE IEEE With handover mechanisms, WiMAX is thus able to support mobile communications at vehicular speeds.
The scope of this standard is to provide mobility enhancement support for SS moving at the vehicular speed, in addition to corrections to The network is an IP end-to-end conventional architecture that provides high-speed broadband. The MAC layer was initially designed specifically for the point-to-point wireless access environment. It supports higher layer or transport protocols such as asynchronous transfer mode ATM , Ethernet, or IP, and is designed to easily accommodate future protocols that have not yet been developed.
MAC layer specification practices considerable departures from It adds support for handoff and power management. QoS Support- ErtPS is similar to UGS in providing unicast grants, thus saving the delay incurred for requesting the bandwidth. The ErtPS is introduced to support real-time service flows that generate periodical variable sized data packets. Thus, ErtPS is especially important to support VoIP, since it allows for managing traffic rates and improves latency and jitter.
Handover Support- In One is due to fading of the signal, interference level, etc. The other is due to the fact that another cell can provide a higher level of QoS for the mobile station MS.
Furthermore, Macro-diversity handovers support handoffs between different sized cells, while inter-technology roaming addresses MS handoffs from BS to backhaul or wired network by providing roaming authentication mechanisms.
Power management is a critical process for mobile applications to enable efficient operation of the MS. The advantage of idle mode for the BS is to avoid multiple handoffs and other normal operations while the SS is traversing the region, and for the BS and network is to avoid unnecessary handoffs from an inactive MS.
When the MS enters the idle mode, it needs to periodically check for broadcast messages sent by the BS to see if new downlink frames have been sent to it. Sleep mode operation is a state in which MS sends a request to be unavailable to the BS.
If the BS responds with approval, the MS is provided with a sleep interval time vector that determines the length of the sleep mode period. The benefit of the sleep mode operation is to minimize MS power usage and utilization of the air interface resources of the BS. While the MS is in the sleep mode, the MS scans other BSs to collect information required for handover during the sleep mode.
Compared with other wired solution such as ADSL, or any other wireless or satellite system, WiMAX based access networks will enable operators and service providers to cost-effectively reach million of new potential customers providing them with broadband ICTs access. This obviously includes adequate coverage, reliability, performances throughput , capacity and applications. Table 1 shows how WiMAX supports different types of access and their requirement.
The WiMAX standard has been developed with many objectives in mind. These objectives are as follows:. A BS in a Point-to-Point configuration may use a narrower beam antenna to cover longer distances. Wireless is more flexible and thus easier to deploy according to the market demand.
With potential range of 30 to 50 kilometers in line-of-site conditions, WiMAX offer a huge improvement over all existing broadband wireless technology. A WiMAX typical scenario. Quick Deployment: Compared with the deployment of wired solutions, WiMAX requires little or no external plant construction. Never mind the excess baggage, err At least your neighbour will have something to envy about.
Do people really understand what these multiple features are capable of? According to the concluding part of the technology survey commissioned by ET to Synovate, most people are clueless when it comes to the ever-advancing consumer technology. They simply love a gadget that is easy to use, is compact, is compatible with other devices and sports superior technology. They like to buy gadgets with all the bells and whistles, such as Bluetooth, Wi-Fi capability and perhaps an ability to hook on to WiMax networks, when the service is available.
And as far as utility goes, well, who cares? Subscribe to ETPrime. Browse Companies:. Find this comment offensive? This will alert our moderators to take action Name Reason for reporting: Foul language Slanderous Inciting hatred against a certain community Others. Your Reason has been Reported to the admin.
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