A network access method includes calculating, by a proxy coordination device, a network access parameter based on a link quality parameter of the proxy coordination device in a power line communication (PLC) network, where the network access parameter includes link overheads, and the link overheads are used to indicate overheads for performing network access by a station device through the proxy coordination device based on radio frequency (RF) communication, and sending, by the proxy coordination device, a destination oriented directed acyclic graph (DODAG) information object (DIO) packet, where the DIO packet includes the link overheads.

A cable modem termination system (CMTS) for use with a modem test server, an external network, and a cable modem. The CMTS including a memory and a processor configured to execute instructions stored on memory to cause CMTS to: provide a downstream service flow to the cable modem; provide an upstream service flow to the cable modem; receive a speed test initiation request from the modem test server; provide a second downstream service flow to the cable modem, provide a second upstream service flow to the cable modem; receive a speed test query from the modem test server; transmit the speed test query to the cable modem via the second downstream service flow; receive a speed test response from the cable modem via the second upstream service flow; and transmit the speed test response to the modem test server.

A home side device according to one aspect of the present invention includes: a UNI port for a communication line used by one or a plurality of communication devices in a user's home; an access processing unit that performs upstream access control and holds a management table of address information of the communication devices; a detecting unit that detects link states of the communication devices; and a control unit that performs a process of clearing the management table when a link-down of all of the communication devices has been detected.

This application provides a network access method for hybrid networking, a proxy coordination device, and a station device. The method includes: calculating, by a proxy coordination device, a network access parameter based on a link quality parameter of the proxy coordination device in a PLC network, where the network access parameter includes link overheads, and the link overheads are used to indicate overheads for performing network access by a station device through the proxy coordination device based on radio frequency RF communication; and sending, by the proxy coordination device, a DIO packet, where the DIO packet includes the link overheads. As such the station device can select a better network access path based on the link overheads, helping to improve operation efficiency of a hybrid network.

A home side device according to one aspect of the present invention includes: a UNI port for a communication line used by one or a plurality of communication devices in a user's home; an access processing unit that performs upstream access control and holds a management table of address information of the communication devices; a detecting unit that detects link states of the communication devices; and a control unit that performs a process of clearing the management table when a link-down of all of the communication devices has been detected.

Described is a method for joint confirmation of many messages in Low Power Wide Area Networks (LPWANs) including adding information on order of messages in transmitted data, parsing order data in messages on a receiving side, sending system message back to original transmitter where information on reception success is encoded bitwise in data field, so that each bit represents one successfully received message.