4g Network And The Network Industry

Privacy: In a wireless network all the devices are able to hear data traffic within their ranges which can be a threat to the security of the link. IEEE 802.11 counters this problem by offering a privacy service option that raises the security level of the 802.11 network to that of a wired network.

Wireless security in 802.11 is less robust and has many security flaws that can be exploited by an attacker. Security best practice for wireless networks depends on a defense in depth strategy, with five control layers:

This is a direct extension of the 802.11b that extends the maximum data rate to 54Mbps, making it possible to serve up to five times as many users. Our Wi-Fi network is based on the IEEE 802.11 b/g standards, which is the most commonly used standard. We have added Wi-Fi access points in our network to give easier access to corporate data and services. Most of the devices in this network, for example the personal computers, smartphones, digital cameras, tablets and digital audio players connected using the Wi-Fi technology. The hotspot will be in the range of 20 meters (66 feet) indoors and a greater range outside.

Outline a wireless network and technology that you use regularly. The WLANs which are derived from the IEEE 802.11 standards, and marketed under the Wi-Fi trademark name. The WLANs security is neither forthright/candid nor simple, and it is continuously varying. Even though, as WLAN increase client output, they also expose the networks to a new group of potential hackers. With the present inherent security weakness of the 802.11 standard, all companies, small, medium or large, need to find out their security conditions derived from the applications using the WLAN. The standards also provide requirements for high-speed networks that support most modern-day applications. What sorts of security issues do

Today’s current standard of 802.11 is 802.11ac. When comparing newer routers for home use, you will run across routers labeled AC1200, AC1750, AC3200, and so on. The “AC” refers to the wireless standard, while the number following it refers to the speed. The current range of 802.11ac routers can provide speeds up to 1300Mbps on the 5 GHz band, and up to 450 Mbps on 2.4 GHz band. The base level for 802.11ac is more than twice the speed offered from the previous standard, 802.11n. Most routers available in stores today offer 802.11n or 802.11ac, older standards such the “a,” “b,” and, “g” are out of

It was designed to replace 802.11a, 802.11b and 802.11g. It has the fastest transfer rate of (600Mbps) and the longest signal range compared to its predecessors. It operates in both 2.4GHz and 5GHz range.

Wi-Fi Protected Access 2, the follow on security method to WPA for wireless networks that provides stronger data protection and network access control. It provides enterprise and consumer Wi-Fi users with a high level of assurance that only authorized users can access their wireless networks. Based on the IEEE 802.11i standard, WPA2 provides government grade security by implementing the National Institute of Standards and Technology (NIST) FIPS 140-2 compliant AES encryption algorithm and 802.1x-based authentication.

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.

It’s very important to determine the device and application requirements based on bandwidth, protocols and frequency. In wireless network, bandwidth, protocols and sometime environmental conditions affect the speed of the channel so we need to calculate the aggregate throughputs before designing the network. Today, users carry Wi-Fi devices such as notebooks, laptops, tablets and Smartphone’s so total throughput must be calculated by estimating number of connections rather than the number of the seats. Some common wireless networking standards such as 802.11a/b/g/n invented in the IEEE association must be supported by wireless network. For better performance and for faster devices (802.11n devices), dual-ratio access points should be deployed. Table1 [3] illustrate the different IEEE standards and throughput.

Wireless networking hardware requires the use of underlying technology that deals with radio frequencies as well as data transmission. The most widely used standard is 802.11 produced by the Institute of Electrical and Electronic Engineers (IEEE). This is a standard defining all aspects of Radio Frequency Wireless networking

Access points connect multiple users wirelessly to each other and to a wired network. Several users equipped with 802.11 NICs might associate with a single access point that connects to an Ethernet network. Each of these users has access to the Ethernet network and to each other. The access point in this case is similar to a bridge device, but the access point interfaces a network to multiple users. A bridge interfaces only other networks.

This article focuses on one of the most used wireless technologies that uses wireless connections of data that avoids expensive process of cables at home: WiMAX. WiMAX stands for Worldwide Interoperability for Microwave Access. Being a faster version of Wi fi, this technology promises speed and large area coverage. It has been successfully proven to deliver the services to the customers (both residential and commercial) economically. WiMAX has the capacity to serve high rates of data that might reach up to 74 Mbps when used a wide spectrum of 20 MHz This has added to its brand value that attracts abound customers. WiMAX falls under the category of MAN technology that came into existence in June 2001. However, the updated version came in 2011 that allowed this technology to provide up to 1 Gbits for particular stations.

The initial protocol 802.11 released in Jun 1997 had an indoor range of just 20 meters and a data rate of only 2 Mbit/s. Two years later the first extension was released (802.11a) containing data rates with varying modulation types up to 54Mbits/s in the 5GHz frequency band and an increased range. The next important extension was the 802.11g standard released in Jun 2003. It is still widely used and uses the 2.4GHz frequency band only. A huge leap forward was achieved with the in 2009 released n standard. Additional antennas for transmitting and receiving result in an increased data rate of up to 150Mbit/s and an approximate indoor range of 70 meters. The backward compatibility means that devices with the new standards can be implemented gradually without changing all network components simultaneously. In Dec 2013 another revision was released that once more focusses mainly on the data rate. By using wider channels and multiple antennas it can currently reach speeds up to 1.3Gbits/s. Devices using this newest standard are

First, this vision points towards a significantly increased (in comparison to earlier generations) set of stakeholders that 5G needs to accommodate when providing communication solutions. Examples of stakeholders are:-

Contents 1. Overview 2. Predecessors of 4G 3.1 LTE 3.2 WiMAX 3.3 UMB (formerly EV-DO Rev. C) 3.4 Flash-OFDM 3. Objective and approach 4.5 Objectives 4.6 Approaches 4.7.1 Consideration points 4.7.2 Principal technologies 4. 4G features 5. Components 6.7 Access schemes 6.8 IPv6 support 6.9 Advanced Antenna Systems 6.10 Software-Defined Radio (SDR) 6. History of 4G and pre-4G technologies 7.11 Deployment plans 7. Beyond 4G research 8. 4G wireless standards