Abstract: The low power wide area network communication mechanism mainly allocates the semi-persistent scheduling (SPS) frames to the terminal devices having network access requirements sequentially by the gateway. The SPS cycle is composed of a plurality of SPS frames and at least one buffering frame. In each SPS cycle, a data reception window is activated by the gateway according to each allocated SPS frames; the SPS frames that the networked terminal devices belong to are activated synchronously within each SPS cycle in order for the networked terminal devices to perform a data transmission with the gateway during each SPS cycle and ensure that the data transmission does not overlap with the data sent by other terminal devices. The scheduling may be re-scheduled at a preset time interval to allocate the SPS frames of terminal devices that are inoperable or out of service area to the terminal devices having network access requirements.

Abstract: The invention is a method for servicing subscriber ends by utilizing virtual LAN on ATU-R of ADSL, which utilizes VLAN to generate a plurality of virtual connections in an ADSL connection, couples equipment of each subscriber end to a plurality of subscriber input/output (I/O) ports in ATU-R, adds a switching hub in the ATU-R for identifying tagged data in the virtual connections, connects each subscriber end in the virtual connections with the switching hub via Ethernet, and assigns each subscriber I/O port in the switching hub to one of the virtual connections having a distinct tag. By utilizing this, each virtual circuit may service different subscriber ends, ensure no data packet of each subscriber end assigned to other subscriber line on the same ATU-R.