Wireless IP, The Killer Application !?

My website and thesis captures the essential elements in the convergence path of wireless networks and Internet protocols resulting in the new paradigm of "Wireless IP." It covers all the important 1G/2G cellular technologies that I have seen in the past decade, along with 3G and 4G, Wireless Local Area Network (WLAN) technologies,including modifications required in protocols, architectures, and framework in virtually every area such as QoS, security, mobility, and so on.

The thesis can be useful for anyone who is interested in the convergence of the wireless and IP networks and for them who need to understand how packet data services and IP work in the wireless world. Furthermore, the thesis represents my views and opinions , based on my technical understanding and experience in these areas

Because the increase of higher system capacities and data rates provided by latest and proposed wireless network technologies, and their closer integration with the Internet enabled by the IP technologies used in these wireless networks are enabling many new ways for people to communicate.
Also people on moving vehicles (e.g. cars, trains, boats and airplanes) may access the Internet or their enterprise networks the same way as when they are at their offices or homes. They may be able to surf the Internet, access their corporate networks, download games from the network, play games with remote users, obtain tour guidance information, obtain real-time traffic and route conditions information.

Wireless networks are evolving into wireless IP networks to overcome the limitations of traditional circuit-switched wireless networks. Wireless IP networks are more suitable for supporting the rapidly growing mobile data and multimedia applications.
IP technologies (such as Mobile IP) are the most promising solutions available today for supporting data and multimedia applications over wireless networks. IP-based wireless networks will bring the globally successful Internet service into wireless networks. The mobile or wireless Internet will be an extension to the current Internet.

Advanced mobile data and multimedia applications such as; MMS, play games in real time with remote users, Voice over wireless (VoIP calls) and broadcasting of audio and video advertisements to mobile phone users such as: advertiser supported phone calls, Wireless IP-enabled radio and watch TV, will grow very fast. New IP broadcasting techniques such as DVB-H (Digital Video Broadcasting for Handhelds), will make it possible to bring video broadcasting services to handheld receivers.

In particular, the growth of advanced mobile data and multimedia applications such as Voice-over-IP (VoIP) help increase multimedia traffic over the wireless networks significantly. Thus, Wireless IP can also be a killer sometimes. Therefore future Wireless IP networks can only be able to service those mobile data and multimedia applications without congestions in the Wireless network, if those Wireless IP networks are ready for it. In other words, "those networks need to be controlled (e.g. by QoS parameters or other specific protocols) end must have enough bandwidth to support all this types of services. Wireless networks and the IP technologies within those networks have to be reviewed and evolved constantly.

Remark these words:
The traffic on broadband wireless networks will be increasingly IP

Mar
22

Cellular Fundamentals – Radio Access Network (RAN)

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Radio Access Network (RAN)

Cellular networks can be considered from the perspective of being divided into the Radio Access Network (RAN) and the Core Network (CN).
The Radio Access Network performs the radio functionality of the network, as well providing the connection to the CN (Core Network). The radio access network comprises of the Base Transceiver Stations (BTSs) and the controller element, which is called the Base Station Controller (BSC). The BTSs are basically the radio elements (RF equipment) on the network side. Mobile terminals (MT) connect to the network via the BTSs. The BTS transmits system information over channels defined for broadcasting network specific information, and mobile stations tune in to these channels before performing access functions. A BTS is connected to a cell site, which hosts antennas atop towers or buildings. Cell sites can be of type macro, micro, or pico depending on the coverage radius. The size of a cell site is dependent on the transmit power level of the BTS.

The radio access network is the largest component of the mobile network, and a large number of base stations and cell sites are provisioned in order to provide coverage. Nationwide coverage of mobile networks requires the deployment of thousands of BTSs. The BTSs provide the channels for use on a dynamic basis to subscribers. Traffic and control channels are defined for the air interfaces depending on the type of technology used. The BTSs are controlled by the base station controller. So from a relationship perspective, a single BSC controls many BTSs. The BSC is responsible for managing the radio resources at the BTSs. The BSC assigns channels to subscribers on a need basis. In addition, it is constantly aware of a Mobile Station’s (MSs) location and the state that it is in. It measures the signal strength (with the assistance of the BTS and the MS) and makes handoff decisions. In the case of CDMA (Code Division Multiple Access) networks, BSCs are also responsible for performing the macro-diversity-combining function required in spread spectrum systems. In addition, the speech coding function may be incorporated into the BSC in some cases.

Categories : Thesis