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Computer software that can intercept and log traffic passing over a digital network or part of a network is better known as packet sniffer. The sniffer captures these packets by setting the NIC card in the promiscuous mode and eventually decodes them. The decoded information can be used in any way depending upon the intention of the person concerned who decodes the data (i.e. malicious or beneficial...
Initially mobile phones were developed only for voice communication but now days the scenario has changed, voice communication is just one aspect of a mobile phone. There are other aspects which are major focus of interest. Two such major factors are web browser and GPS services. Both of these functionalities are already implemented but are only in the hands of manufacturers not in the hands of users...
Femtocells (aka Home Node B) are low-power wireless access points that operate in licensed spectrum to connect standard mobile devices to a mobile operator's network using residential DSL or cable broadband connections. This device has evolved out of the research that despite of large deployment of macrocell (BTS/BSC) in high density apartment areas and densely populated urban population, the signal...
WiMAX (Worldwide Interoperability for Microwave Access)/ IEEE 802.16 is a very promising 4G technology. WiMAX is now in the testing via implementation stage at various locations like Taiwan, India. The results have been, so far, very promising. With the growing popularity of WiMAX, the security risks have increased many folds. In this paper we will give an overview of the security architecture of...
In this paper we present an idea for guaranteed performance in real time video communication with error resiliency. The idea carries three main concepts called connection establishment with user defined performance parameters, back pressure re-routing and error resiliency by feedback control. The performance parameters we consider here are time delay and bandwidth. Establishing a connection that gives...
IEEE 802.16/Worldwide Interoperability for Microwave Access (WiMAX) technology is a very promising successor to the current wireless technologies like 3G, IEEE 802.11/WiFi. WiMAX incorporates a number of advanced techniques which make it stand apart from the current technologies. WiMAX has evolved quite a lot from the 802.16 standard which was approved in December, 2001. It now has different modes...
The Bluetooth-kit (BT-Kit) and microprocessor controlled device/appliance based automation are restricted to less flexible and dedicated control. This paper presents a digital method for controlling these devices in a form that is very flexible and can be used with Bluetooth, microprocessor, PC enabled or otherwise automated and smart homes and industries.
This paper presents an overview of random early detection algorithm and differentiated services on ns2. In the present scenario of computer networks the traffic is increasing exponentially due to which packet losses are also increasing at a great rate. An active queue management in routers and gateways can potentially reduce packet loss rates in the Internet. In this paper we have proposed use of...
The most common method of authentication or protection against intrusion in a computer system is to use alphanumeric usernames and password. Choosing a strong password and protecting the chosen password has always been a popular topic among security researchers. Traditionally strong password schemes could provide with certain degree of security but strong password leads complexity and difficult to...
There is a rapid growth and evolution in the area of telecommunications and network operators are expected to provide seamless integration of all communication applications on a single system. In these circumstances IMS has emerged out as a key player. IMS is basically a network architecture consisting of an IP-based core network connected to multiple access networks to provide a converged service...
Mobile phones have become essential part of everybodypsilas daily life. Efforts have been made to add more features into the mobile devices. Contact less payment is another dimension that adds value to mobile phones. In contact less payment through mobile device, user is able to pay using his mobile device without touching or swiping card on a reading device. In this paper, we present an idea to equip...
User requirements are growing faster than ever and the limitations of the current mobile communication systems have forced the researchers to come up with more advanced and efficient technologies. 4G mobile technology is the next step in this direction. 4G is the next generation of wireless networks that will totally replace 3G networks. It is supposed to provide its customers with better speed and...
A data network may not be stable at the connection level under some unfair bandwidth allocation policies, even when the normal offered load condition is satisfied i.e. average traffic load at each link is less than its capacity. In this paper, we present that a data network is stable when the bandwidth of the network is allocated so as to provide a minimum bandwidth using max min fairness algorithm...
This paper intends to present some important theoretical and practical results that we faced during setting up a VoIP (Voice over Internet Protocol) server with the well known open source VoIP server Asterisk. For a fully functional voice exchange we require to set up a server based on Asterisk, connecting clients to the server with the help of soft/hard phones and then comes the configuration aspects...
The Bluetooth specification describes a robust and powerful technology for short-range wireless communication. Unfortunately, the specification is immense and complicated, presenting a formidable challenge for novice developers. This paper is concerned with recording video from mobile phone to desktop computers and laptops. Users could be able to record huge data and stored in the computers within...
Data Stream Management System is a new class of stream handling with SQL-like queries & robustness at relatively high streams of data. TelegraphCQ is an open source DSMS tool developed towards handling live streams of data. Jamdroid, on the other hand, is a new collaborative project, developed on Android platform, that gathers road traffic reports from all its end-users, compiles the data and...
Technological advances allow handheld devices to be equipped with faster processors and wireless interfaces, making the performance comparable to laptop Computers. In this paper, we describe real-time video streaming over heterogeneous networks namely Bluetooth, Wi-Fi and GPRS-EDGE. The wireless channel used for communication in different network varies in their Bandwidth, supported Bit rate and Unequal...
The radio frequency identification (RFID) tags are an integral part of lives today, whether realized or not. Thousands of applications are currently using RFID tags and the number is growing. RFID finds its application in fields as diverse as race timing, transportation payments, passports, & animal identification. This paper aims at combining the ubiquitous applicability of RFIDs with high speed...
This work confers an application which makes possible to use a Bluetooth enabled mobile phone to remote control home appliances such electric fan, LEDs and stepper motor, connected to the personal computer. It can also be used to control other computer applications such as multimedia players and facilitates the user while giving presentation on slides. It is a client-server based application which...
GPRS or the general packet radio service is a non-voice value added technology that allows data communication over mobile phones in an Internet Protocol (IP)-based network [11]. This paper focuses on the transmission of voice over the existing data channel in GSM/GPRS networks using a Web server. Since the data channel in any network is economically viable for transmission, a mechanism to transfer...
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