Patent ID: 11963216
Assignee: HITACHI ENERGY LTD
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 17:
18. Non-transitory computer readable medium storing a computer program for channel access in an industrial wireless network, the computer program comprising computer code which, when run on processing circuitry of a packet transceiver in the industrial wireless network, causes the packet transceiver to:
obtain, from a network controller of the industrial wireless network, information about time/frequency resource units allocated to the packet transceiver, wherein the time/frequency resource units are provided in a set of guaranteed timeslots, wherein the guaranteed timeslots are timewise divided into slots and frequency wise divided into channels, and where one slot- channel pair defines one time/frequency resource unit, at least two allocated time/frequency resource units sharing a slot, wherein information of the allocated time/frequency resource units for each packet transceiver is provided in a resource allocation scheme;
map packets of its own traffic flows to its allocated time/frequency resource units in each set of guaranteed timeslots, wherein the packets are mapped according to priority-based scheduling of its own traffic flows and independently of any mapping of packets of other packet transceivers in the industrial wireless network; and
after mapping packets of its own traffic flows to its allocated time/frequency resource units in each set of guaranteed timeslots, provide feedback, from the packet transceiver to the network controller about usage of the allocated time/frequency resource units, wherein the network controller dynamically updates the resource allocation scheme according to the feedback as obtained by the network controller from the packet transceiver,
wherein a frequency-hopping pattern for the allocated time/frequency resource units is applied between consecutive guaranteed timeslots, the consecutive guaranteed timeslots not being separated by a shared timeslot,
wherein each allocated time/frequency resource unit is allocated to a single packet transceiver.