Application Scenarios for WLAN QoS
As shown in Figure 1, network bandwidth is limited. The device needs to provide differentiated services for services, for example, reducing jitter and latency of voice packets and guaranteeing bandwidth for key services.
By using WMM, voice or video data can preempt wireless channels.
By using priority mapping, high priority data is transmitted first.
By using traffic policing, user rate is limited and network congestion is prevented.
- By using airtime scheduling, channel occupation time of each user is scheduled. In this way, users on the same radio are assigned equal time to occupy the channel, ensuring fairness in channel usage.
- By using ACL-based packet filtering, the wireless packets matching ACL rules are permitted or rejected to control network traffic.
- By using ACL-based priority remarking, the priorities of wireless packets matching ACL rules are remarked. The packets matching the same ACL rule are provided with the same QoS service, and thus differentiated services are provided.