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

Archive for April, 2014


Access Independent IP Mobility

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The details of the mobility mechanisms in each of the cellular networks at the radio level and roaming across different networks are dependent on the protocols used for that specific cellular technology. Users can roam only to the networks that support the same cellular technology.

For example, GSM users can roam only to similar GSM networks. When other non-cellular access technologies (e.g., WLAN) are considered, it is even worse since currently there is no common network infrastructure and protocol exchange to support roaming between these access networks.

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Idle Mobility

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Cellular networks are operated by different service providers, and each service provider manages the network by dividing the network into manageable network areas in a hierarchical fashion, all the way down to the cell level. Mobile nodes are identified by location based on which cell the user is presently in.

Cellular networks perform location management by continuously tracking the location of mobile nodes with the help information received from the mobile nodes. The location information determines the cell (or a larger network area) where the mobile node is currently located. The location information is broadcast to all the mobile nodes in the network or cell area.

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The Mobility Challenge

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Mobility is an important feature in cellular networks and in any wireless network. Hence, it has been a key design element and an integrated part of current cellular network architectures. However, this is not the case with IP networks, and hence mobility can be considered as one of the biggest challenges for IP.

Without support for mobility, the applicability of IP to cellular networks is quite limited and may result in wireless-specific solutions to handle mobility.

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The Radio Link Challenge

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Although IP and its application protocols are designed as link generic to accommodate a very wide range of data link networks, there was an implicit assumption in the designs that the network is a wired network.

Now that the wireless is adopting these protocols, it is realized that the radio links have their own characteristics, which impact the performance of the IP protocols.

These impacts are more significant in the case of Wireless Wide Area Networks (e.g. cellular networks) and Wireless Personal Area Network (e.g. Bluetooth), compared to the Wireless LAN (IEEE 802.11).

This is because WWAN and WPAN offer more latency and limited bandwidth. Thus the limitations of IP applicability to wireless networks are also based on the characteristics of radio links for IP.

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Similar technologies to WiMAX

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UMTS is a direct competitor to WiMAX. UMTS is been deployed in Europe and elsewhere mostly by Mobile Telephone operators. The HSDPA technology enables downlink with data transmission up to 8-10 Mbit/s. In July 2005 EU frequency allocation for WiMAX was blocked by France and Finland, where manufacturers have invested heavily in UMTS technology.

Unlike earlier Broadband Wireless Access (BWA) iterations WiMAX is highly standardized which should reduce costs.

However, since chipsets are custom-built for each BWA manufacturer, this adds time and cost to the process of bringing a product to market, and this won’t be changed by WiMAX. WiMAX’s equivalent or competitor in Europe is HiperMAN. WiMAX Forum, the consortium behind the standardization, is working on methods to make 802.16 and HiperMAN interoperate seamlessly.

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