Methods, devices, and systems for operating a fire system network are described herein. One method includes receiving a plurality of time-slotted maintenance messages over a period of time from each of a plurality of fire system devices located in a facility via a first spreading factor, receiving an event message from a fire system device of the plurality of fire system devices responsive to the fire system device determining a fire event, the event message sent via a second spreading factor, and sending a block actuate message to the plurality of fire system devices responsive to receiving the event message, wherein the block actuate message is configured to activate a fire alarm.

Methods, devices, and systems for operating a fire system network are described herein. One method includes receiving a plurality of time-slotted maintenance messages over a period of time from each of a plurality of fire system devices located in a facility via a first spreading factor, receiving an event message from a fire system device of the plurality of fire system devices responsive to the fire system device determining a fire event, the event message sent via a second spreading factor, and sending a block actuate message to the plurality of fire system devices responsive to receiving the event message, wherein the block actuate message is configured to activate a fire alarm.

Methods, devices, and systems for operating a fire system network are described herein. One method includes receiving a plurality of time-slotted maintenance messages over a period of time from each of a plurality of fire system devices located in a facility via a first spreading factor, receiving an event message from a fire system device of the plurality of fire system devices responsive to the fire system device determining a fire event, the event message sent via a second spreading factor, and sending a block actuate message to the plurality of fire system devices responsive to receiving the event message, wherein the block actuate message is configured to activate a fire alarm.

Methods, devices, and systems for operating a fire system network are described herein. One method includes receiving a plurality of time-slotted maintenance messages over a period of time from each of a plurality of fire system devices located in a facility via a first spreading factor, receiving an event message from a fire system device of the plurality of fire system devices responsive to the fire system device determining a fire event, the event message sent via a second spreading factor, and sending a block actuate message to the plurality of fire system devices responsive to receiving the event message, wherein the block actuate message is configured to activate a fire alarm.

An optical line terminal (OLT) for an optical network configured to communicate with optical network units (ONUs) in a PON-type optical network, the OLT including: a processing circuitry, for each ONUs, to manage a transmission delay time in transmission to the ONU to manage an acceptable waiting time of uplink data of the ONU; to obtain an uplink transmission start time and data amount of the optical network unit, based on uplink assignment information; and to generate uplink transmission grant information, which is made up of a time point and time length of uplink transmission to the ONU, wherein the processing circuitry determines the uplink transmission grant information on transmission to the ONU, based on a transmission delay time of the ONU, on the uplink transmission start time and data amount of the ONU, and on the acceptable waiting time of uplink data of the ONU.

An optical line terminal (OLT) for an optical network configured to communicate with optical network units (ONUs) in a PON-type optical network, the OLT including: a processing circuitry, for each ONUs, to manage a transmission delay time in transmission to the ONU to manage an acceptable waiting time of uplink data of the ONU; to obtain an uplink transmission start time and data amount of the optical network unit, based on uplink assignment information; and to generate uplink transmission grant information, which is made up of a time point and time length of uplink transmission to the ONU, wherein the processing circuitry determines the uplink transmission grant information on transmission to the ONU, based on a transmission delay time of the ONU, on the uplink transmission start time and data amount of the ONU, and on the acceptable waiting time of uplink data of the ONU.

A bufferless ring network including at least two nodes and at least two timeslots, the at least two timeslots include a dedicated timeslot, and a first node in the bufferless ring network has use permission for the dedicated timeslot. The first node is configured to, in a state of having the use permission for the dedicated timeslot, detect whether all dedicated timeslots that pass through the first node are available, set a permission switch signal, and cancel the use permission for the dedicated timeslot according to the permission switch signal after detecting that all the dedicated timeslots that pass through the first node are available. A remaining node in the bufferless ring network is configured to obtain the use permission for the dedicated timeslot according to the permission switch signal. The remaining node is a node that needs to use the dedicated timeslot.

A bufferless ring network including at least two nodes and at least two timeslots, the at least two timeslots include a dedicated timeslot, and a first node in the bufferless ring network has use permission for the dedicated timeslot. The first node is configured to, in a state of having the use permission for the dedicated timeslot, detect whether all dedicated timeslots that pass through the first node are available, set a permission switch signal, and cancel the use permission for the dedicated timeslot according to the permission switch signal after detecting that all the dedicated timeslots that pass through the first node are available. A remaining node in the bufferless ring network is configured to obtain the use permission for the dedicated timeslot according to the permission switch signal. The remaining node is a node that needs to use the dedicated timeslot.