Network Implementation for Davis Networks Inc.
In the proposal, effort is made to develop an affordable local LAN for Davis Networks Inc. The effort involves provision of wireless Internet connection to all individuals for their desktops and laptops from the current high speed connection they have at an affordable price (800 USD -- 1000 USD). Provision of the internet to the same location costs approximately 700 USD including all other expenses like doing the wiring etc. To implement the project, there are various obstacles that have to be considered like electric poles, trees and walls. The core location is the Computer Center building. It has the highest speeds of connection. From this building, there will be distribution to the surrounding buildings located between 500 and 1000 meter range. The establishment of the network needs 5 Wireless Access points (WAP) having Omni antennas (A, B, C, D, E) and two directional (X and Y) are taken. A Wireless Access Point will be installed at the computer building and it will have 2 Antennas (one Omni and another one Directional). Directional antenna (X) will be communicating with antenna (Y) which is also a directional antenna and Omni antenna (B) will be supported in between (Deep, Kush & Kumar, 2010).
Figure 1: Wireless network (ad-hoc mode)
Figure 2: Wireless network (infrastructure mode)
Communication will be made through the antennas by corresponding WAP. Line of sight existing between the antennas will be clear. In the network, all the used antennas shall communicate through other antennas and so there will be Access points at A, B, C, D and E (and working in repeater mode). As illustrated in the figure above, every access point gives the signals to the laptops and computers or other devices that can be found around. Support will be given to weak access points by a stronger one (Deep, Kush & Kumar, 2010).
As soon as the area is understood properly and the locations for the Wi-Fi identified, a survey of the market will be carried out to identify which products have the highest cost-benefit expectations and ratios. An alternative strategy can have a wired network being maintained as the pillar of the WAP. Laying down Wired networks can be expensive. To increase the bandwidths, fiber optics may be brought on board. Besides, a collection of low gain antenna WAP can be positioned to cover two to four houses that neighbor each other (Deep, Kush & Kumar, 2010).
2. Review of What Other Work
These days, several Radio Access Technologies (RATS ) are in existence including GSM/GPRS, UMTS, IEEE 802.11-based wireless LAN (e.g. WiFi) as well as IEEE 802.16-based Wireless Metropolitan Area Network (e.g. WiMAX). The coming systems of mobile communications foretell the availability of wireless communication environment that is heterogeneous and makes communication seamless. Also available will be adaptive service quality and joint service management. In a setting that has several technologies, making Radio Access Networks (RANs) that cooperate with one another can be challenging. Next Generation Mobile Networks (NGMN) gives recommendations to help in the supporting of the job of bodies concerned with standardization as well as manufacturers so as to achieve cost-effectiveness in integrated mobile communication systems in the future. There are 3 he recommendation groups. The first is functional recommendations which target the service provider's ability to give attractive and flexible services. The second relate to efficiency as far as cost is concerned. The third concerns guidance given towards the evaluation of suitability of deployment. The NGMN has expectations of the integrated network maximizing its exploitation of resources in situations where terminals are needed to give support to other RATs. A subsystem based on Session Initiation Protocol might be implemented to control access and also for network and service function (Luo & Bodanese, 2008).
Several access points and laptops with wireless capabilities can be found in homes today. It is expected that the wireless devices numbers will continue rising given the falling costs. Because only 3 non-interfering channels in 802.11 exist, performance will suffer due to the interference that will be caused by the wireless devices. Spectrum scarcity could be a big issue in the future. Solving this problem could take actively monitoring the usage of spectrum in a specific location and allocate spectrums efficiently as the wireless devices need them (Li & Liu, 2005).
Infrastructure Mode
The wireless LAN can be infrastructure mode because of the wireless access point. The mode allows wireless connection to devices in the given area covered. The access point has at least one antenna that allows interaction with wireless nodes. In infrastructure mode, the wireless...
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