This paper compares two methods to estimate the position of a mobile robot in an indoor environment using only odometric calculus and the WiFi energy received from the wireless communication infrastructure. In both cases we use a well-known probabilistic method based on the Bayes rule to accumulate localization probability as the robot moves on with an experimental WiFi map, and with a theoreti...

An architecture for a peer-to-peer mobile ad-hoc network offering distributed information provision is presented. Any user can volunteer to become an information server (a server-user). Volunteering implies devoting some of the user’s computational resources (storage, bandwidth, processing power) to serving information. An incentive scheme is proposed to encourage end-users to become server-use...

---------------------------------------------------------------------***--------------------------------------------------------------------Abstract The new technology has the ability to transmit a voice over Internet protocol process networks by using an Asterisk PBX.In present day companies are implement to produce a different VoIP products to many features in market.This paper aim is introdu...

Along with more extensive application of wireless sensor network (WSN) technology, real-time and a large amount of data transmission requires WSN system to achieve high-speed transmission. Therefore, a high-speed wireless data transmission scheme is an essential requirement in WSN environment. We propose a modified WiFi (Wireless Fidelity) protocol for wireless transmission and high speed seria...

This paper presents an experimental evaluation of the performance costs of a wide variety of authentication methods over IKEv2 in wireless networks. The studied methods are preshared keys (PSK), extensible authentication protocol (EAP) using MD5, SIM, TTLS-MD5, TLS, and PEAP-MSCHAPv2. For the EAP-based methods RADIUS is used as authentication, authorization, and accounting (AAA) server. Two net...

Last mile link is often a bottleneck for end user. However , users typically have multiple ways of accessing the Internet (cellular, ADSL, public Wifi). This observation led to creation of protocols like mTCP [1] or R-MTP [2]. Current bandwidth aggregation protocols are packet based. However, this is not always practical — for example, non-TCP protocols are often blocked on firewalls. Moreover,...

In this paper, we propose a methodology for estimating the crowd speed using WiFi devices, and without relying on people to carry any device (passively). Our approach not only enables speed estimation in the region where WiFi links are, but also in the adjacent possibly WiFi-free regions where there may be no WiFi signal available. More specifically, we use a pair of WiFi links in one region, w...

Wireless local area networks (WLANs) based on WiFi technology have become a standard part of life for many, whether integrated within a home television or a radio-controlled drone helicopter. Th e latest commercially available version of WiFi, based on the Institute of Electrical and Electronics Engineers (IEEE) 802.11ac standard, provides signifi cant connectivity improvements. In addition, it...

We present a simple network design for a large multi-provider municipal WiFi network where the WiFi zones of multiple organizations are merged into a single IP subnet at a central layer 2 switch. The design provides built-in session mobility support for the WiFi clients using the network, without any additional software at the client. We also provide a simple design for mobile access points so ...

Moving trains represent a voluminous mass of users moving at high velocities that require bandwidth (on demand). Existing solutions typically based on wireless technology alone cannot scale efficiently to provide for bandwidth to such fastmoving voluminous users. A new approach is proposed that facilitates dynamic provisioning, good scalability and efficient use of available bandwidth. The prop...