A GROUPED POLLING METHOD BASED ON GUARANTEE STRATEGY OF FIXED QUALITY OF SERVICE (QOS) IN THE WIRELESS LOCAL AREA NETWORK

摘要

A grouped polling method based on guarantee strategy of fixed quality of service (QoS) in the wireless local area network includes: determine the grouped polling strategy according to the priority of the traffic type and perform the circular polling to the groups according to said strategy, one grouped polling of said circular polling is for all the groups or part of the groups, the content of the each grouped polling can be different, the stations respond the grouped polling according to the priority of the data traffic type to be transmitted, the stations that comply with the polling terms transmit the data to the destination station and the destination station receives the response. The invention enables the interval between frames when transmitting the traffic type with different priority and the retreating window to be set as same or different. The interval between frames when transmitting the traffic type with low priority is not very large. The invention doesn't have the unnecessary transmission delay, increases the network throughput and enhances the network performance.