Table 1 SF characteristics
From: Adaptive QoS provision for IEEE 802.16e BWA networks based on cross-layer design
SF | Traffic type | QoS constraint |
|---|---|---|
UGS | Constant bit rate (CBR-based) services (e.g., the leased line E1/T1, VoIP without compression) | Stringent requirements on data rate, delay/delay jitter and packet loss rate |
rtPS | Real-time variable bit rate (VBR-based) services (e.g., mpeg-based video conference and multimedia streaming) | Strict delay and packet loss rate requirements |
ErtPS | Real-time VBR-based services (e.g., VoIP without compression) | Â |
nrtPS | Non-real-time VBR-based services (e.g., FTP) | Minimum reserved rate and stringent packet loss rate requirements |
BE | BE services (e.g., HTTP, E-mail) | Packet loss rate should be maintained |