Psion Teklogix 9160 G2 Benutzerhandbuch

Psion Teklogix 9160 G2 Wireless Gateway User Manual

181

Q

UALITY

OF

S

ERVICE

(Q

O

S)

19

19.1 Understanding QoS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183

19.1.1 QoS And Load Balancing . . . . . . . . . . . . . . . . . . . . .183

19.1.2 802.11e And WMM Standards Support . . . . . . . . . . . . . .183

19.1.3 QoS Queues And Parameters To Coordinate Traffic Flow . . . .184

19.1.3.1 QoS Queues And Type Of Service (ToS) On Packets . .184

19.1.3.2 EDCF Control Of Data Frames And Arbitration Interframe

Spaces. . . . . . . . . . . . . . . . . . . . . . . . . . .186

19.1.3.3 Random Backoff And Minimum/Maximum Contention

Windows . . . . . . . . . . . . . . . . . . . . . . . . .187

19.1.3.4 Packet Bursting For Better Performance . . . . . . . . .188

19.1.3.5 Transmission Opportunity (TXOP) Interval For Client Sta-

tions . . . . . . . . . . . . . . . . . . . . . . . . . . . .188

19.1.4 802.1p And DSCP Tags . . . . . . . . . . . . . . . . . . . . . .188

19.1.4.1 VLAN Priority . . . . . . . . . . . . . . . . . . . . . .190

19.1.4.2 DSCP Priority . . . . . . . . . . . . . . . . . . . . . . .190

19.2 Configuring QoS Queues. . . . . . . . . . . . . . . . . . . . . . . . . . 191

19.2.1 Configuring AP EDCA Parameters . . . . . . . . . . . . . . . .192

19.2.2 Enabling/Disabling Wi-Fi Multimedia. . . . . . . . . . . . . . .193

19.2.3 Configuring Station EDCA Parameters . . . . . . . . . . . . . .194

19.3 Updating Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195