h i g h l i g h t s • TESN processes tasks in parallel. It has heterogeneous architecture, including one master core and seven slave cores. • TESN adopts WLC to allocate tasks, which balances the load of each slave core and improves the tasks processing speed obviously. • Compared with single core system, TESN effectively reduces the congestion situation. • The performance of WLC based on multi-core processor is better than RR when the number of soft cores is more than two.