Information Technology Reference
In-Depth Information
3
A Hybrid Approach to Communicate
between WSN and UMTS with Video
Quality Me
asurements and Predictions
Yufei Du, Fung Po Tso, and Weijia Jia
CoNTENTS
3.1
Introduction .................................................................................................. 75
3.2
Research on Circuit-Switched Mobile Video ........................................... 77
3.2.1
Summarization of the H.324........................................................... 77
3.2.1.1
Functional Elements Covered by 3G324M .................... 78
3.2.1.2
Multimedia Data Streams of 3G324M............................ 79
3.2.1.3
Framework of 3G-324M.................................................... 79
3.2.2
Introduction of H.245 ...................................................................... 82
3.2.2.1 Master-Slave Determination Signaling Entity.............. 82
3.2.2.2 Capability Exchange Signaling Entity ........................... 83
3.2.2.3 Logical Channel Signaling Entity .................................. 84
3.2.2.4 Close Logical Channel Request Signaling Entity......... 84
3.2.2.5 H.223 Multiplex Table Entry Modification
Signaling Entity................................................................. 84
3.2.2.6 Audiovisual and Data Mode Request
Signaling Entity................................................................. 84
3.2.2.7 Round Trip Delay Determination Signaling Entity ..... 85
3.2.2.8 Maintenance Loops Signaling Entity............................. 85
3.2.2.9 Commands and Indications ............................................ 85
3.2.2.10 ASN.1 and X.691 ................................................................ 85
3.2.3
H.223 Multiplexing and Demultiplexing ..................................... 86
3.2.4
Summary........................................................................................... 87
3.3
Communication between Sensor and UMTS Network ......................... 88
3.3.1
Sensor Network Frameworks......................................................... 89
3.3.2
UMTS Network Frame .................................................................... 90
3.3.3
Interoperability Sensor and UMTS Network .............................. 90
3.3.4
Network Framework ....................................................................... 91
3.3.4.1
Network Interfaces............................................................ 92
3.3.4.2
Sensor Network Middleware .......................................... 92
3.3.4.3
User Application................................................................ 92
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