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Wireless Internet Telephony BE Seminar Abstract is defined as real time voice or multimedia communication over the internet or packet switched network two telecommunication  standardizations  bodies  are  used  IP to  make  wireless  Internet  telephony a reality  in  the  wireless  telecommunication  network.

Using wide range of wireless devices, mobile end-user changes their location to access Internet telephony services. In wireless telephony, mobile end-user access services from any terminal or from anywhere. This requirement is called universal access.           

The architecture depends on mobile agent that acts as folder & carries services. Mobile agent is software program with characteristic to move from node to node on network while execution.

The mobile agent provides universal access requirement in an efficient manner to relocate to new devices being used by end-user or the SIP proxy H.323 gateway which is close to the end-user.

A mobile agent or MSA (mobile service agent) and elements like Service Creation Unit, Service Management Unit & Service Publication Unit handles the creation of new services. The SMU manages user subscription that creates and maintains MSAs.

Refer to this link for Seminar Report

 Internet Telephony Seminar Report 

There are four phases in the service life cycle. They are creation, deployment utilization and withdrawal respectively Service Creation unit, Service management Unit, Mobile Service Agent & Service publication Unit. Service maintenance takes place over the network without any human interaction.

 Mobile Service Agent (MSA) needs an agent execution environment (AEE) on every node. AEE is running agent platform where Mobile Agent can move and provide encryption.

 Conclusion:

 The service architecture is applicable to telephony or nontelephony service. This paper presented two solutions for subscription handling. They are agent swapping and dynamic agent upgrading. The main component of architecture is MSA, SCU, SPU and SMU.

The requirements are ease of service creation, tailored service, interoperability with existing technologies, service manageability, universal access, multiplayer environment, and support for a wide range of service.

The solution for subscription handling, swapping and dynamic update answered the concerned for deployment and withdrawal.

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Wireless Communications WIMAX B tech Seminar Abstract: In the field of wireless communications, underwater wireless communication is a flourishing research area. Applications such as oceanographic data collection, AUVs(autonomous underwater vehicles),underwater radio, transmission of video and audio signals by real time monitoring have been emphasized to overcome the present limitations.

Wireless describes the telecommunication with which the electromagnetic waves carry the signal over communication path. The signals used to carry digital information through an underwater channel are not radio signals as electromagnetic waves propagate over short distances so acoustic waves are used that propagate over long distances.

Necessities of underwater wireless system are temporary experiments, breaking of wires, significant cost for deployment, and experiment over long distances. The approach is to deploy underwater sensors which record data and recover the instruments. It is overcome by connecting underwater instruments by means of wireless links

Underwater Acoustic Channel: Severe multipath- 1 to 10msec. for shallow water at up to 1 km range, Doppler shifts, and Long latencies-speed of sound underwater is approximately 1500m/sec. Parts of an acoustic modem are DSP BOARD(Digital Signal Processing Board), AFE  BOARD(Analog Front End Board), and DC/DC converter.

Underwater networks have number of sensors and vehicles that are deployed to perform collaborative monitoring tasks over a given area. Acoustic sensor technology is used for oceanographic data collection, pollution monitoring, offshore exploration, disaster prevention and tactical surveillance applications and also for vehicular Applications, Deep Sea Observatory, and New Solar Underwater Robot Technology.

Conclusion:

In spite the development in underwater wireless communication, there is still an immense scope hence more research of the ocean bottom still remains unexploded. An advanced version of the existing applications and innovative inventions is must in this field. The main objective is to imbibe knowledge about this emerging field and encourage research and implementation of advanced technology to overcome the environmental effects on the noise performance of acoustic systems.

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These days Voice and Internet are the primary communication. Internet made industry to realize its potential so the industry is planning its marketing and communication strategies over the Internet. E-mail is the method to communicate nowadays who use the Internet. The wireless technologies and the Internet were growing separately.

Wireless Application Protocol-WAP MCA Seminar Idea is a standard developed by the WAP Forum. It is a group founded by Nokia, Ericsson, Phone.com (formerly Unwired Planet), and Motorola. The WAP Forum includes computer industry heavyweights such as Microsoft, Oracle, IBM, and Intel along with many other companies.

 According to the WAP Forum, the goals of WAP are Independent of wireless network standard, Open to all, Proposed to the appropriate standards bodies, Scalable across transport options, Scalable across device types, and Extensible over time to new networks and transports.

 WAP defines a communications protocol and application environment. It is a standardized technology for distributed computing and cross-platform. It is similar to the World Wide Web. WAP is the combination of HTML and HTTP. The important features it includes are optimization for low-bandwidth, low-memory, and low-display capability environments. These environments include PDAs, wireless phones, pagers, and virtually other communications device.

 Wireless Application Protocol (WAP) is a result of continuous work to define an industry-wide specification for developing applications which is operated on wireless communication networks. The scope of WAP Forum is to define market which is growing quickly and reaching new customers and providing new services. WAP defines a set of protocols in transport, session and application layers to meet the challenges in advanced services, differentiation, and fast/flexible service creation.

 Conclusion:

 WAP technology creates a global wireless internet. WAP is designed to benefit wireless subscribers, handset vendors, network operators and service providers. WAP is a young technology as the wireless data industry. It can be used as an extremely powerful tool by software developers.

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The problem with broadband access is that it is pretty expensive and cannot reach all areas and the problem with WiFi access is hot spots are very small so coverage is sparse. The high speed of broadband service would be less expensive than cable or DSL and easy to extend to rural and suburban areas.

 The broad coverage such as cell phone network, WiMAX (Worldwide Interoperability for Microwave Access) is the most promising wide-area wireless broadband technology in a short period of time. Since it covers long distances, WiMAX has the ability to serve everything from low-density residential applications to enterprise customers.

 In this WiMAX Technology For a Wire-Free World IT Seminar Topic we will discuss about the WiMAX technology and other technologies competing with it and also the growth of this technology in India. The WiMAX technology provides a wireless connectivity efficiently and solution to create wireless WAN which is meant to provide high-speed Internet. This is the real advantage of WiMAX.

 The basic concept of WiMAX is that it uses high transmit power and focused signals, using directional antennas. The base standard operates in the 10 GHz to 60 GHz range. Hence the risk is very limited. The base standard is fixed wireless access for point-to-multipoint (PMP) connections. It means that a single WiMAX base station is able to connect either an ISP or a public telephone network situated over a distance of 50 km. WiMAX also supports mesh mode networking where subscriber stations communicate directly with each other. It reduces the use of line of sight (LOS) as well as deployment costs. The other technologies competing with WIMAX are Wi-Fi, Blue tooth, and Zigbee.

 Conclusion:

 In the near future, we expect to have wireless systems such as 3G, Wi-Fi and WiMAX, combined together with the higher-layer standards like IMS (IP Multimedia System). Integrating those technologies allow a wide range of devices to move transparently over the network.

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Today’s advanced data services are working on wireless traffic that is boosted with growth in advanced market segments as the migration from fixed to mobile voice continues. The technology that helps to grow the broadband data applications is WiMAX and it is a technology that helps in point-to-multipoint broadband wireless access without any connection.

 This WiMAX and Other Technologies Seminar focuses on the technical comparisons between WiMAX and other technologies. It explains ability of the WiMAX to have an efficient service in multipath environment.

 The development of broadband applications like email and downloading/uploading files through a laptop computer or PDA has been slow. WiMAX is radio technology that gives two-way Internet access at various megabits per second with ranges of several miles. The technology provides high speeds, but is less expensive to set up so the technology can challenge DSL (Digital Subscriber Line) and cable broadband services. The goal of WiMAX is to provide fixed, nomadic, portable and, mobile wireless broadband connectivity without the help of direct line-of-sight.

 WiMAX stands for “Worldwide Interoperability for Microwave Access”. IEEE 802.16 is working group number 16 of IEEE 802 that specializes in point-to-multipoint broadband wireless access. It is also called WiMAX.

 WiMAX is a wireless metropolitan area network (MAN) technology. The portable version of WiMAX, IEEE 802.16 utilizes Orthogonal Frequency Division Multiplexing Access (OFDM/OFDMA) in which the spectrum is divided into many sub-carriers. Each sub-carrier uses QPSK or QAM for modulation. The WiMAX specification improves various limitations of the WiFi standard by providing increased bandwidth and stronger encryption. WiFi wireless LAN technology is used in Broadband wireless access (BWA) applications. WiMAX is suitable for both indoor and outdoor BWA.

 Conclusion:

 Hence WiMAX technology for portable/nomadic provides a better performance, interference rejection, multipath tolerance, high data quality of service support, and lower future equipment costs i.e., low chipset complexity, high spectral efficiencies. WiMAX can complement existing and emerging 3G mobile and wireline networks.

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Worldwide Interoperability for Microwave Access WIMAX: A wireless revolution has seeped into our routine lives and are going to go wireless. Blue tooth wireless technology is a low power, short- range technology and due to the short-range of Blue tooth, the emergence of Wifi has replaced it. Wifi popularly is known as 802.11. The demand for high coverage has got to open a way for WiMax.

 WIMAX stands for Worldwide Interperability For Microwave Access. WiMAX’s purpose is to ensure that broadband wireless radios use interoperate from vendor to vendor, manufactured for customer. It is a new standard being developed by the IEEE which focuses on solving the problems of point to multipoint broadband outdoor wireless networks. It has many possible applications that include connectivity for homes and businesses and backhaul for wireless hot spots.

 WiMAX is a wireless technology which is faster and has a longer range than Wi-Fi. However, WiMAX does not conflict with Wi- Fi. It is designed to co-exist with it and extends to flavors of wired ethernet (IEEE 802.3), token ring (IEEE 802.5) and non- IEEE Standards.

 WiMAX has a couple of different frequency ranges. Basically, the IEEE 802.16 standard addresses frequencies from 10GHz to 66GHz. The 802.16a specification, which is an extension of IEEE802.16, covers bands in the 2GHz-to- 11GHz range. WiMAX has a range of up to 30 miles with a typical cell radius of 4-6 miles. A WiMAX technology has two parts, WiMAX receiver and WiMAX tower.

 Conclusion:

 WiMax is an unavoidable technology of our future with challenges and opportunities. It has the potential for being a business enabler. There are many possibilities with this technology which are immense and numerous and will lead to advances of commercial field. The researchers depend on optimism and extent of WiMax impact depends on the limits of human ingenuinity. WiMax is slow but steadily ushering.

Download Worldwide Interoperability for Microwave Access Wimax Technical paper Presentation.