Advertising on mobile devices has large potential due to the very personal and intimate nature of the devices and high targeting possibilities. We introduce a novel B-MAD system for delivering permission-based location-aware mobile advertisements to mobile phones using Bluetooth positioning and Wireless Application Protocol (WAP) Push. We present a thorough quantitative evaluation of the system in a laboratory environment and qualitative user evaluation in form of a field trial in the real environment of use. Experimental results show that the system provides a viable solution for realizing permission-based mobile advertising.

-In this paper we present results of measurements on the performance of GSM HSCSD and GPRS data transmission. We used a measurement tool that we have developed to study the performance of various wireless links as perceived by nomadic applications using the TCP protocol. The results show that in stationary connections the throughput and response time were stable and, in general, close to the theoretical values. However, the throughput and response time varied a lot when connections were used in motion. One of the reasons is that TCP was not capable to adapt itself properly to the variability of QoS of HSCSD and GPRS, and therefore, it did a lot of unnecessary retransmissions causing performance slowdown. The performance of HSCSD was better than the performance of GPRS. Reliability was adequate in stationary connections, but in moving connections there were unwanted disconnections or long pauses in data transfer.

Abstract

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The advanced smartphones entering the mass market are capable of playing audio and video files back, which paves the way for new types of rich mobile multimedia services. However, these services impose high data rate requirements on the wireless link, which can not necessarily be satisfied with the current mobile phone networks. This can be compensated with a wireless personal area network based for example on Bluetooth connectivity, or with a wireless local area network. This paper presents a case study demonstrating complementary distribution of static and dynamic multimedia content with Bluetooth equipped WPAN service points, a wireless local area network and mobile phone networks. The empirical evaluation conducted in the real environment of use shows that the proposed service is meaningful with commercial potential.

This paper presents two approaches to efficient service development for Internet Telephony. In first approach we consider services ranging from core call signaling features and media control as stated in ITUT's H.323 to end user services that supports user interaction. The second approach supports IETF's SIP protocoLWe compare these from differing architectural perspectives, economy of network and terminal development, and propose efficient architecture models for both protocoIs In their design, the main criteria were component independence, lightweight operation and portability in heterogeneous end-to-end environments. In proposed architecture, the vertical division of call signaling and streaming media control logic allows for using the components either individually or combined, depending on the level of functionality required by an application.

Mobility, context-awareness and payment combined provide a customer with a completely new setting of consuming services at any time and any place. We introduce SmartRestaurant service, which allows customers to use mobile devices for ordering and paying lunches from a nearby campus restaurant beforehand. Further, SmartRestaurant provides the restaurant with means of adjusting the sales with production capacity and prior knowledge of upcoming orders. We present a user evaluation of the system in form of a field trial in the real environment of use.