Information Technology Reference
In-Depth Information
3.3.5 The Solutions .................................................................................... 92
3.3.5.1 Message Solutions ............................................................. 92
3.3.5.2 Internet Working Solutions ............................................. 94
3.3.5.3 Power Consumption ......................................................... 94
3.3.6 Design of the Gateway of UMTS and Sensor Network.............. 94
3.3.6.1 Control Server.................................................................... 95
3.3.6.2 Gateway in UMTS and Sensor Network System.......... 96
3.3.6.3 Sensor Node....................................................................... 96
3.3.7 Summary........................................................................................... 96
3.4 Optimization of Multimedia Gateway for Pervasive
Communication............................................................................................ 97
3.4.1 Introduction ...................................................................................... 98
3.4.2 Background....................................................................................... 99
3.4.2.1 Characteristics of H.245 Messages in 3G System ....... 100
3.4.2.2 Suggestion of a Novel Procedure.................................. 102
3.4.3 Implementation Details of Lookup Table-Based
Message Encoding ......................................................................... 103
3.4.4 Performance Evaluation and Discussion.................................... 105
3.4.5 Summary......................................................................................... 108
3.5 Mobile Video Quality Measurements and Predictions........................ 109
3.5.1 Introduction .................................................................................... 109
3.5.2 Video Measurements..................................................................... 109
3.5.3 Video Quality Prediction.............................................................. 110
3.5.4 Least Squares Method................................................................... 112
3.5.5 Simulated Annealing .................................................................... 112
3.5.6 Performance Evaluation................................................................ 113
3.5.6.1 Least Squares Method .................................................... 114
3.5.6.2 Simulated Annealing...................................................... 114
3.5.7 Summary......................................................................................... 114
3.6 Conclusions................................................................................................. 118
3.6.1 Circuit-Switched Mobile Video.................................................... 123
3.6.2 UMTS Video Gateway Implementation...................................... 123
3.6.3 Optimization to Make the 3G Video Gateway Efficient
and Robust ...................................................................................... 123
3.6.4 Communication between Sensor and UMTS Network ........... 124
3.6.5 Mobile Video Quality Measurements and Predictions............ 124
References............................................................................................................. 125
The 3G-324M is an umbrella standard of the Third Generation Partnership
Project (3GPP) for wireless video communications, which was developed to
sat isf y the st ri ngent requirements of real-t ime i nteract ive video and audio ser-
vices. In practice, 3G-324M has been employed in 3G networks today to enable
the multimedia services with messaging and streaming. However, the design
of the supporting architecture for the unification of the diverse streams with
3G-324M poses lots of challenges. This chapter introduces a new supporting
