Introduction

Abstract

AbstractAdvances in wireless communications stimulate fast development of multimedia services for mobile networks. Over the top services, such as speech and video telephony, gain the attention of mobile users, who nowadays do not expect connectivity only, but also demand for Quality of Experience (QoE). In this sense, the concept of an “always best connected” user faces new challenges. Nomadic use of services and heterogeneity of technology make it impossible to constantly provide the highest quality, and its active management is required. This tightly couples the success of speech and video telephony offerings in heterogeneous networks with the awareness of user perception of changing quality. In this sense, this book is tailored to investigate perceptual effects that may occur in heterogeneous wireless networks when speech and video telephony is used. In particular, user perception of quality changes due to switching between networks, codecs, and bit rates during an ongoing transmission is in focus of the analysis. This knowledge is inevitable for a perception-based design of service and mobility management in modern networks.KeywordsHeterogeneous NetworkMobility ManagementVideo CodecHeterogeneous Wireless NetworkUser PerceptionThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.