Private　or　special-purpose　wireless　networks　present　a　new　technological　trend　for　future　mobile　communications,　while　one　attractive　application　scenario　is　the　wireless　communication　in　a　smart　factory.　In　addition　to　wireless　technologies,　this　paper　pays　special　attention　to　treat　a　smart　factory　as　the　integration　of　collaborative　multi-robot　systems　for　production　robots　and　transportation　robots.　Multiple　aspects　of　collaborative　multi-robot　systems　enabled　by　wireless　networking　have　been　investigated,　dynamic　multirobot　task　assignment　for　collaborative　production　robots　and　subsequent　transportation　robots,　social　learning　to　enhance　precision　and　robustness　of　collaborative　production　robots,　and　more　efficient　operation　of　collaborative　transportation　robots.　Consequently,　the　technical　requirements　of　6G　mobile　communication　can　be　logically　highlighted.　©　2021　River　Publishers.