Dimensioning Network Case Study

The city of Hastings, KY wants to set up a secure WAN to connect all of their government buildings. They also want to provide free and secure wireless access to the residents that live within the downtown city limits (the free wireless access should provide access to the residents of local government services and general Internet access). The city currently uses leased lines through the local phone company to connect the 10 government buildings. They also want to provide access to the schools in the city; 5 elementary schools, 2 middle schools, and 2 high schools. The total student population is approximately 9,600. By setting up their own WAN they expect to save at least 50% over the cost of the

For this week’s lab we are using various scenarios to compare and contrast different antenna types and solutions to reduce signal spillover in a specific wireless network. Also we are evaluating and

A networking framework in which devices communicated with each other by first going through an Access Point (AP). In infrastructure mode wireless devices can communicate with each other or can communicate with a wired network. With one AP is connected to wired network and a set of wireless stations it is referred to as a Basic Service Set (BSS). An extended service set (ESS) is a set of two or more BSSs that from a single sub network. Most corporate wireless LAN operates in infrastructure mode because they require access to the wireless LAN in order to use services such as file services or printers. A cellular network or mobile network is a wireless infrastructure base network distributed over land areas called cells.

To solve these problems a company can implement Wi-Fi on their network. This can reduce the price of implementing additional cable in the network.

5G is the fifth generation wireless broadband technology based on the IEEE 802.11ac standard. 5G is provide high speed then 3G and 4G. 5G operates on 5GHZ signal and set is to offer speed up to 1 GB/s.

The Athlete’s Shack (TAS) is a company with ten stores in their chain of sporting goods stores. Due to increased popularity the business is growing and in need of a

After implementing the wireless system, the same work can be performed in 25 to 28 hours. Multiply that by 82 stores and you have major cost savings.

The ultimate goal of every wireless company is to minimize its coverage-hole area, which can be done by adding more cell tower. However, the major challenge is to deal with the political factor – zoning. In the area where residences of the community are eager to preserve land and historical values is most likely very difficult for Sprint to place its cell tower equipment. In the next five years, zoning will be even more difficult for Sprint to fill-in those coverage holes. Sprint has long term strategy to face with this unavoidable challenge. The company expects to spend more time and money in constructing visual-friendly stealth structures, i.e. stealth trees and vaulted equipment underground.

We take an example of Grand Forks city where we would like to deploy Small Cell networks. Let’s consider the Grand Forks city area shown in Figure (a) is covered by an operator (e.g., Verizon, AT&T) networks, where a single Macro Cell can support maximum N number of customers and get maximum $M of revenues. Now according to the proposed plan, 7 Micro Cells (i.e., Small Cells) will be deployed within the Macro Cell, where each Micro Cell can support same amount of customers as Macro cell, shown in Figure (b). So the total network capacity will be increased by 7 times and the operator will gets 7 times more revenues. In the same way we can deploy 7 Pico or Femtocell (i.e., Small Cells) within each Micro cell, where each Pico or Femtocell can

The US telecom industry target for mass 5G deployment is the end of this decade.

Here users share common carrier resources (Fig. 2.2). This is a more cost effective solution compared for example to point-to-point lines. The carrier can make more efficient use of its infrastructure. Connections into the carrier’s network are shared between many customers and

A measure of quality of service in a wireless connection is made using SINR (Signal to noise interference ratio).For the performance evaluation let us consider a an overall network t to be composed of two-tier 19 macrocells, with many femtocells randomly deployed over the macrocells. Then the macro user would be interfered from neighbouring macro cell's (18) and all of the adjacent femtocells. Due to small transmit power, only femtocells which would be located in the 1-tier macrocell area gives interference to macro user. The estimation of the received SINR of a macro user m on subcarrier k, when the macro user is interfered from neighboring macrocells and all the adjacent Femtocells [12] would be given by where P_(M,K) and P_(M^1,K) is transmit power of serving macro-cell M and neighbouring macrocell M’ on subcarrier k, respectively. G_(M,m,K) is channel gain between macro user m and serving macrocell M on subcarrier k. Channel gain from neighbouring macro cells are denoted by G_(M1,m,K) Similarly, P_(F,K) is transmit power of neighbouring femtocell F on subcarrier k. .

Small cell backhaul connects small cells with mobile network operator. As mobile network operators begin to deploy growing numbers of small cells in order to meet the rapidly increasing demand for mobile data capacity, and to utilize the maximum spectrum we use backhaul. The major challenge facing them is how to provide efficient and cost-effective backhaul solution.

Telecommunication technologies have evolved rapidly over the past decades, a situation which led to the arrival of the 4G Long Term Evolution (LTE) to provide faster data speed better than the legacy 3G EVDO data technology. Certainly, LTE has been of great benefit to both individuals and corporations across the globe. However, operators are often faced with challenges such us Capacity constraints, slow throughput due to increased numbers of usage, interference from other wireless equipment, as well as poor coverage issues.

A Macrocell user operating in the same band as femtocell users may cause unacceptably high interference levels, if it is close to the femtocell base station supporting the aforementioned femtocell users, and far away from its own macrocell base station. Additionally, the fact that femtocells can be deployed in an ad hoc fashion anywhere within a macrocell, and can be removed as easily, adds to the critical importance of interference management. Notwithstanding the importance of this issue, the concerns listed above renders jointly optimal design of the two networks impractical due to the complexity and overhead associated with a large dynamic network. Consequently, a computationally manageable yet effective interference management strategy is needed. Interference management has been an important design element for multiuser systems in the past two decades. Judicious receiver design for interference limited systems, e.g., CDMA, and multiuser MIMO, proves useful for interference cancellation [3]. In addition to multiuser detection, transmit power control [4], and joint design of transmitters and receivers [5], [6] offer interference mitigation needed in interference limited systems. We note that while our approach does not involve explicit frequency partitioning between the tiers, i.e., relies solely on the space dimensions, allowing for greater flexibility, it is possible to have our scheme accompany a frequency partitioning scheme and increase the number