000 02765nam a22004695i 4500
001 978-3-319-02102-7
003 DE-He213
005 20200421112219.0
007 cr nn 008mamaa
008 131120s2014 gw | s |||| 0|eng d
020 _a9783319021027
_9978-3-319-02102-7
024 7 _a10.1007/978-3-319-02102-7
_2doi
050 4 _aTK1-9971
072 7 _aTJK
_2bicssc
072 7 _aTEC041000
_2bisacsh
082 0 4 _a621.382
_223
100 1 _aLewcio, B�ażej.
_eauthor.
245 1 0 _aManagement of Speech and Video Telephony Quality in Heterogeneous Wireless Networks
_h[electronic resource] /
_cby B�ażej Lewcio.
264 1 _aCham :
_bSpringer International Publishing :
_bImprint: Springer,
_c2014.
300 _aX, 153 p. 40 illus., 2 illus. in color.
_bonline resource.
336 _atext
_btxt
_2rdacontent
337 _acomputer
_bc
_2rdamedia
338 _aonline resource
_bcr
_2rdacarrier
347 _atext file
_bPDF
_2rda
490 1 _aT-Labs Series in Telecommunication Services,
_x2192-2810
505 0 _aIntroduction -- Experience of wireless telephony -- Heterogeneous testbed -- Experience of speech telephony -- Experience of video telephony -- Conclusions.
520 _aThis book shows how networking research and quality engineering can be combined to successfully manage the transmission quality when speech and video telephony is delivered in heterogeneous wireless networks. Nomadic use of services requires intelligent management of ongoing transmission, and to make the best of available resources many fundamental trade-offs must be considered. Network coverage versus throughput and reliability of a connection is one key aspect, efficiency versus robustness of signal compression is another. However, to successfully manage services, user-perceived Quality of Experience (QoE) in heterogeneous networks must be known, and the perception of quality changes must be understood.  These issues are addressed in this book, in particular focusing on the perception of quality changes due to switching between diverse networks, speech and video codecs, and encoding bit rates during active calls.
650 0 _aEngineering.
650 0 _aElectrical engineering.
650 1 4 _aEngineering.
650 2 4 _aCommunications Engineering, Networks.
650 2 4 _aInformation Systems Applications (incl. Internet).
650 2 4 _aSignal, Image and Speech Processing.
710 2 _aSpringerLink (Online service)
773 0 _tSpringer eBooks
776 0 8 _iPrinted edition:
_z9783319021010
830 0 _aT-Labs Series in Telecommunication Services,
_x2192-2810
856 4 0 _uhttp://dx.doi.org/10.1007/978-3-319-02102-7
912 _aZDB-2-ENG
942 _cEBK
999 _c57286
_d57286