Q-CNM configures two kinds of service categories (i.e., best effort and video) in the access network, according to the traffic parameters that has been informed via Q-SIP/SDP proxy server. Figure 15.9 depicts the system configuration functional architecture for QoS-guaranteed service provisioning on Fast/Gigabit Ethernet. For the experiments of QoS provisioning, eight end-user stations are configured to produce video traffic of two service categories; each service category uses four stations to gener- ate individual traffic flows. To guarantee QoS-guaranteed services for AC_VI service, the Q-CNM configures classification, metering, marking, WRED, pri- ority queuing, and priority scheduling at the Fast/Gigabit Ethernet switch and the edge IP/MPLS router. In the experiment, an aggregated bandwidth of 60 Mbps at IP-layer is allocated for the AC_VI service in the access network switch. Consequently, AC_VI service can receive the QoS-guaranteed service unless its data rate does not exceed 60 Mbps. C 2009 by Taylor & Francis Group, LLC Q-SIP/SDP for Converged Heterogeneous Wired and Wireless Networks 365 Q-SIP/SDP Proxy server Q-CNM Set priority Set CoS priority queue and scheduling scheme Set classification, Weighted Round Robin (WRR) metering, and marking scheduler and WRED Allocated bandwidth for VI according to DSCP values service class : 60Mbps Video streams with BE class STA_BE_1 Cisco 2950 STA_BE_2 STA_BE_3 Cisco 2950 Cisco 6506 STA_BE_4 Video streams with VI class STA_VI_1 Cisco 2950 STA_VI_2 STA_VI_3 STA_VI_4 FIGURE 15.9 Configurations for QoS-guaranteed service provisioning on Fast/Gigabit Ethernet. 15.4.2.2 Connectivity Establishment for QoS Provisioning at IEEE 802.11e Wireless LAN The QoS-provisioning in IEEE 802.1 11e WLAN requires configuration of QoS- aware Access Point (QAP) to handle MAC frames according to the access cat- egory (i.e., AC_VO, AC_VI, AC_BK, and AC_BE) in EDCA. The RTS/CTS and fragmentation mechanisms are not used in most practical WLAN envi- ronments with default settings. In the case 