HPNA MxU network for an MxU, the MxU including a plurality of HPNA LANs, each of the HPNA LANs operating according to a synchronous communication specification. Each of the HPNA LANs includes a plurality of nodes, one of the nodes within each HPNA LAN being a gateway node, a selected one of the nodes within each HPNA LAN being defined a LAN-master node and each HPNA LAN is coupled with a WAN via the respective gateway node. The LAN-master nodes allow the gateway nodes to transmit within a selected HPNA LAN downstream signals during at least one time slot, and the LAN-master nodes allow the nodes other than the gateway nodes to transmit upstream signals within a selected HPNA LAN to the respective gateway or transmit HN signals within a selected HPNA LAN, between nodes other than the respective gateway nodes during at least another timeslot.