The system performance can improve with larger network scale, since higher network density introduces extra diversity in the opportunistic formation of any abstract wireless links.[10] Global QoS Decoupling: Global application or network QoS (Quality of Service) is decoupled into local requirements of co-operations in neighboring wireless nodes, i.e., wireless link QoS. More specifically, by decoupling global application-level QoS, it allows the system layer to better organize the wireless link modules that are provided by the wireless link layer. For example, by decoupling global network-level QoS, such as throughput, end-to-end delay, and delay jitter, the wireless link module design can achieve the global QoS requirements.