The　asymmetry　traffic　between　downlink　(DL)　and　uplink　(UL)　in　massive　machine-type　communication　(mMTC)　systems　is　so　prominent　that　it　makes　the　traditionally　fixed　frame　protocols　insufficient　to　handle.　Meanwhile,　the　dynamic　time-division　duplexing　(D-TDD)　is　a　promising　and　attractive　technology　since　its　number　of　time　slots　for　the　DL　and　UL　can　be　asymmetric　and　adjusted　dynamically.　In　the　cellular　and　mMTC　co-existing　network,　to　balance　the　discrepancy　of　the　UL/DL　ratio　and　alleviate　the　interference　as　well,　in　this　study,　the　authors　design　a　D-TDD-based　transmission　frame　structure　to　first　fulfil　the　basic　transmission　requirements　of　the　human-type　communication　(HTC)　users　with　a　low　power　almost　blank　subframe.　Herein,　the　stochastic　geometry　methods　are　adopted　to　calculate　spectral　efficiencies　of　the　HTC　user　equipment.　Then,　focusing　on　the　worst　queue　state　in　mMTC,　they　devise　the　slot　allocation　problem　with　the　min-max　objective　of　the　UL/DL　queues　and　utilise　the　sub-gradient　descent　(SGD)　method　for　a　solution.　Simulation　results　show　that　the　proposed　traffic　aware　sub-frame　configuration　is　more　appropriate　for　the　dynamical　asymmetry　environment.　Meanwhile,　the　adopted　dynamic　step　size　SGD　algorithm　can　achieve　a　trade-off　between　the　worst-case　queue　and　the　network　throughput.