IP mastery for unrivalled QoS/QoE
To maintain reliable performance for real-time applications, such as voice over IP and video, the Alcatel-Lucent WiMAX solution manages QoS dy- namically, with traffic prioritization across all network levels. Starting with the request from the end-user device, each network level commu- nicates with the others to determine the required QoS level for the session. Then it dynamically checks the network resources available, based on the rights of the subscriber. And finally,
packets are tagged accordingly, estab- lishing end-to-end flows. The result is outstanding QoS. The Alcatel-LucentWiMAX solution has recorded a voice-quality Mean Opinion Score
of 4.1 out of 5.0 in urban field deploy- ments – a higher level of quality than demonstrated with top-quality GSM codecs under ideal radio conditions.
However, IP traffic is much less predict- able than in past wireless or cellular networks. The Alcatel-Lucent
End-to-End IP Wireless-Broadband Solution for WiMAX goes even further, incorporating latest innova- tions from Bell Labs to give unprec- edented QoS/QoE guarantees. The
Alcatel-Lucent 9900 Wireless Network Guardian is the first product on the market providing simultaneous, real- time visibility over every link of the wireless broadband network where overload could cause the network
to crash.
Figure 3. Dynamic QoS managed across the network
| | | | Session border |
Device | | | | controller |
Application | | A | | |
| | | Application |
client (SIP | | | |
| | | proxies (SIP, |
user agent, | | | |
| | B | RTSP proxies) |
RTSP client) | | |
| | | |
| | C | Policy | |
| D | function | |
WiMAX radio | | | Access border |
interface | Base | WAC | HA | gate function |
| |
| station | WiMAX access | | |
| | network | | |
IMSVideo streaming
NGN
Transport plane
DSCP/802.1p | DSCP/802.1p | DSCP/802.1p |
tagging in UL PEF | tagging (DL/UL) | tagging in DL |
Alcatel-Lucent End-to-End IP Wireless-Broadband Solution for WiMAX 9
