Dynamic Load Balancing Control of Multiclass Traffic in Multi-Link IEEE 802.11be Networks

To support the increasing demand for wireless services with efficient data rates, the IEEE 802.11be Extremely High Throughput (EHT) is being developed. This paper considers an IEEE 802.11be platform to support multiclass traffic characterized by different performance requirements. We focus on the study of the multi-link operation (MLO) being introduced by the standard. Therefore, we develop a Markov Decision Process (MDP) model to control the routing of arriving packets based on the resource requirements of the various traffic streams. We show that there exists a unique optimal stationary policy for the routing control of packets that minimizes the overall cost of the queueing system. The optimal routing control significantly decreases the Mean Sojourn Time (MST) of packets with lower load demand without interfering with the service performance of the highest resource requirements traffic.