Supported number of 4 CoS Conversational Streaming Interactive Background Throughput Peak throughput Mean throughput Maximum bit rate for uplink/downlink Guaranteed bit rate for uplink/downlink Link packet error rate SDU Error Ratio Residual Bit Error Rate Transfer delay CoS minimum packet transfer delay Transfer delay CoS average packet transfer delay Maximum Transfer delay CoS maximum packet transfer delay Delay Variation CoS packet transfer delay jitter CoS packet loss rate Residual Bit Error Rate SDU Error Ratio Deriving generic IEEE 802.21 QoS parameters General The following subclauses describe how to derive generic QoS parameters from IEEE Std 802.11 link measurement parameters. This derivation relies on incremental values of counters as specified in the IEEE Std 802.11. Note that the parameters are unicast parameters that are unrelated to multicast traffic. Packet loss rate To calculate the packet loss rate (PLR), one uses Equation (1). (1) According to IEEE Std 802.11, a packet is a MAC user data packet or MAC service data unit (MSDU). The can be derived from the Transmit Stream/Category Measurement Report using Equation (2). PLRMSDU (2) = Packet error rate The packet error rate (PER) can be calculated using Equation (3).
Supported number of CoS 4 Conversational Streaming Interactive Background Throughput Peak throughput Mean throughput Maximum bit rate for uplink/downlink Guaranteed bit rate for uplink/downlink Link packet error rate SDU Error Ratio Residual Bit Error Rate CoS minimum packet transfer delay Transfer delay CoS average packet transfer delay Transfer delay CoS maximum packet transfer delay Maximum Transfer delay CoS packet transfer delay jitter Delay Variation CoS packet loss rate Residual Bit Error Rate SDU Error Ratio Deriving generic IEEE 802.21 QoS parameters General The following subclauses describe how to derive generic QoS parameters from IEEE Std 802.11 link measurement parameters. This derivation relies on incremental values of counters as specified in the IEEE Std 802.11. Note that the parameters are unicast parameters that are unrelated to multicast traffic. Packet loss rate To calculate the packet loss rate (PLR), one uses Equation (1). (1) According to IEEE Std 802.11, a packet is a MAC user data packet or MAC service data unit (MSDU). The PLRMSDU can be derived from the Transmit Stream/Category Measurement Report using Equation (2). (2) = Packet error rate The packet error rate (PER) can be calculated using Equation (3).
21-14-0067-01-REVP-802-21-2008-text-to-be-included.docx