A system (52) and a method maintain a medical body area network (MBAN) (62). Devices (56, 58) of the MBAN (62) are communicated (152) with over one or more channels of the MBAN (62). The one or more channels include a primary channel, and each of the devices (56, 58) is assigned to one of the one or more channels. Further, a duty cycle of each of the one or more channels is continuously monitored (156). In response to the duty cycle of the primary channel meeting or exceeding a duty cycle limit, a device (56, 58) of the devices (56, 58) is moved (158) to a secondary channel.