Enhancing the Multimedia Tour Guide Experience: Transmission Tailoring Based on Content, Location, and Device Type

Enhancing the Multimedia Tour Guide Experience: Transmission Tailoring Based on Content, Location, and Device Type

Tacha Serif (Brunel University, UK) and Gheorghita Ghinea (Brunel University, UK)
DOI: 10.4018/978-1-59904-820-8.ch012
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Abstract

This chapter describes an investigation exploring user experiences of accessing streamed multimedia content, when that content is tailored according to perceptual, device and location characteristics. It builds upon the findings of our user perception evaluations by harnessing the results together to create pre-defined profiles based on QoP requirements, device type, and location for context-aware multimedia content streaming, and, in so doing, enhance the concept of context to include perceptual requirements. In the light of the findings, we propose that multimedia transmission to mobile and wireless devices should be made based on pre-defined profiles, which contains a combination of static (perceptual, device type, CPU speed, and display specifications) and dynamic information (streamed content type location of the device/user, context of the device/user). Furthermore, we believe that using profiling technology mobile service providers can effectively manage local network traffic and cut down their bandwidth costs considerably.
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Context Aware Computing

Advances in computing hardware and software technologies are key factors behind the proliferation of mobile computing. However, the initial ideas on mobile technologies and devices came from Weiser, according to whose vision the most profound technologies are the ones that weave themselves into the fabric of everyday life until they are undistinguishable from it (1991). Weiser in his articles identifies two crucially important issues, namely location and communication, which are necessary to initiate the “disappearance” of wired computing and create the conditions necessary for the birth and growth of location and context-aware computing (Want et al., 1995; Weiser, 1991, 1993, 1998).

Following the introduction to the concept of context-aware computing and its definition, some example studies will now be reviewed. One of the earliest was ParcTab (Want et al., 1995), which was implemented at the Xerox PARC Research Labs based on the vision of Mark Weiser. The main objectives of this project were:

  • To design a mobile hardware device, the PARCTAB, that enables personal communication

  • To design an architecture that supports mobile computing

  • To construct context-sensitive applications that exploit this architecture

  • To test the entire system in an office community.

As part of this prototype application, devices such as a palmtop computer, an electronic notepad, and an electronic whiteboard were used. The result of this work was a digital office facilitated with some intelligent electronic gadgets. All the devices in use as part of this project were connected to the local area network using infrared (IR) connections, which also enabled the location management of the users. Knowing the location of the user, the relevant communications (e.g., emails and phone calls) were then routed accordingly to the user’s physical location or computer terminal.

The active badge project conducted at Olivetti Research Laboratories in Cambridge, UK, in the late 90s significantly affected context-aware computing through the implementation of the first indoor positioning system (Want, Hopper, Falcao, & Gibbons, 1992). The system was initially implemented as a substitute for the pager system that was used to locate members of staff and assist receptionists with their switchboard operations and is facilitated with wearable badges, sized 55x55x7mm and weighing 40grams, to produce a unique code for approximately a tenth of a second every 15 seconds. These transmissions are then picked up by receivers, which are scattered around the host building. The received signal is then relayed to a location server processing the location of the user.

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Table of Contents
Foreword
Abbas Jamalipour
Preface
Nicola Cranley , Liam Murphy
Chapter 1
Ronan Skehill, William Kent, Dorel Picovici, Michael Barry, Sean McGrath
This chapter introduces quality of service in multi-access wireless networks. Specifically it demonstrates how QoS is implemented in IEEE 802.11 and... Sample PDF
Evaluating QoS in a Multi-Access Wireless Network
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Chapter 2
Dirk Staehle, Andreas Mäder
This chapter gives an overview of the background and functionality of the high speed downlink packet access (HSDPA), and provides insights into the... Sample PDF
Radio Resource Management Strategies for HSDPA-Enhanced UMTS Networks
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Chapter 3
Nidal Nasser, Tarek Bejaoui
Major research challenges in the next generation of wireless networks include the provisioning of worldwide seamless mobility across heterogeneous... Sample PDF
Handoff Management in Next Generation Wireless Networks
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Chapter 4
Ming Li, Roberto Riggio, Francesco De Pellegrini, Imrich Chlamtac
This chapter provides a comprehensive review of the architectures, algorithms, and protocols in the topic of resource management in IEEE... Sample PDF
Resource Management in IEEE 802.11 Based Wireless Networks
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Chapter 5
Anna Sfairopoulou, Carlos Macián, Boris Bellalta
Network Technologies and Strategies (NeTS) Research Group, Universitat Pompeu Fabra, SpainThis chapter introduces the problems caused to voice over... Sample PDF
Adaptive Codec Selection for VoIP in Multi-Rate WLANs
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Chapter 6
Michael M. Markou, Christos G. Panayiotou
This chapter introduces the network buffer control techniques as a mean to provide QoS. This problem has been extensively studied in the context of... Sample PDF
Buffer Control Techniques for QoS Provisioning in Wireless Networks
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Chapter 7
Gabriel-Miro Muntean, Janet Adams
Wireless networks are becoming a part of everyday life for many people. When a mobile device has wireless LAN capability, multimedia content can be... Sample PDF
Power Saving in Wireless Multimedia Streaming to Mobile Devices
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Chapter 8
Jose Luis Jodra, Fidel Liberal, Begoña Blanco Jauregi
This chapter introduces the principal characteristics of MANETs and shows how these particularities may affect both QoS conditions and QoS... Sample PDF
Multimedia Services Provision in MANETs
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Chapter 9
Andrej Kos, Mojca Volk, Janez Bester
Commonly understood as the next generation networks (NGN), a composite environment of proven telecommunications and Internet-oriented mechanisms has... Sample PDF
Quality Assurance in the IMS-Based NGN Environment
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Chapter 10
Marcio Nieblas Zapater, Graça Bressan
This chapter discusses the quality assurance of multimedia services over IP networks from the end user standpoint and introduces the concept of... Sample PDF
Quality of Experience for Video Services
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Chapter 11
Dorel Picovici, John Nelson
Perceptual voice quality measurement can be defined as an objective quantification of an overall impression of the perceived stimulus. An... Sample PDF
Perceptual Voice Quality Measurements for Wireless Networks
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Chapter 12
Tacha Serif, Gheorghita Ghinea
This chapter describes an investigation exploring user experiences of accessing streamed multimedia content, when that content is tailored according... Sample PDF
Enhancing the Multimedia Tour Guide Experience: Transmission Tailoring Based on Content, Location, and Device Type
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Chapter 13
Harilaos Koumaras, Fidel Liberal, Lingfen Sun
The concept of PQoS, although in general it deals with the user satisfaction with a specific delivered/ requested service, is in practice... Sample PDF
PQoS Assessment Methods for Multimedia Services
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Chapter 14
Peifang Zhang, Scott Jordan
Emerging wideband code division multiple access (WCDMA) data services will likely require resource allocation to ensure that throughput targets are... Sample PDF
Scheduling and Access Control for Wireless Connections with Throughput Guarantees
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Chapter 15
Paolo Chini, Giovanni Giambene, Snezana Hadzic
Nowadays there is an increasing need of broadband communication anytime, anywhere for users that expect to receive multimedia services with support... Sample PDF
Broadband Satellite Multimedia Networks
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Chapter 16
Panagiotis Papadimitriou, Vassilis Tsaoussidis
An increasing demand for multimedia data delivery coupled with reliance in best-effort networks, such as the Internet, has spurred interest on... Sample PDF
End-to-End Support for Multimedia QoS in the Internet
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Chapter 17
Tarek Bejaoui, Nidal Nasser
This chapter introduces the cross layer design for resource allocation over multimedia wireless networks. Conventional layered packet scheduling and... Sample PDF
Cross-Layer Radio Resource Management Protocols for QoS Provisioning in Multimedia Wireless Networks
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Chapter 18
Gürkan Gür, Suzan Bayhan, Fatih Alagöz
This chapter introduces the QoS issues and support in transport protocols for wireless multimedia transmission. After an overview of the transport... Sample PDF
Transport Protocols and QoS for Wireless Multimedia
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About the Contributors