Electronic device and method for performing ranging through UWB communication

1. A method of operating an electronic device to perform ranging through Ultra-Wide Band (UWB) communication, the method comprising:

receiving state information of each of moving nodes occupying channels provided by anchor nodes in a UWB communication area to perform ranging on the anchor nodes;

setting priorities of the moving nodes based on the state information; and

recovering one of the channels occupied by the moving nodes based on each of the priorities.

2. The method of claim 1 , wherein the setting of the priorities comprises:

identifying, by the anchor nodes, a moving node on which ranging has never been performed from among the moving nodes occupying the channels as a first moving node; and

setting a priority of the first moving node to be lower than priorities of other moving nodes.

3. The method of claim 2 , wherein the setting of the priorities comprises:

identifying a moving node on which ranging is performed by the anchor nodes from among the moving nodes occupying the channels as a second moving node; and

setting a priority of the second moving node to be higher than priorities of other moving nodes.

4. The method of claim 3 , wherein the setting of the priorities comprises:

calculating a number of ranging anchors that is the number of anchor nodes performing ranging on the second moving node; and

setting a priority between the second moving nodes based on the number of ranging anchors.

5. The method of claim 4 , wherein the setting of the priorities between the second moving nodes comprises setting a priority of a moving node having a larger number of the ranging anchors to be higher than a priority of a moving node having a smaller number of the ranging anchors.

6. The method of claim 3 , wherein the setting of the priorities comprises:

identifying moving nodes other than the first and second moving nodes among the moving nodes occupying the channels as third moving nodes;

calculating a number of expired anchors, which is the number of anchor nodes where ranging has stopped because ranging is not performed for a time period while ranging is performed on the third moving node; and

setting a priority between the third moving nodes based on the number of expired anchors.

7. The method of claim 6 , wherein the setting of the priority between the third moving nodes comprises setting a priority of the moving node having a larger number of expired anchors to be lower than a priority of the moving node having a smaller number of expired anchors.

8. The method of claim 1 , wherein the recovering comprises recovering a channel being occupied by the moving node set to a lowest priority.

9. The method of claim 1 , wherein the recovering is performed, in response to a new moving node being detected in the UWB communication area while all of the channels are occupied by the moving nodes.

10. An electronic device that performs ranging through Ultra Wide Band (UWB) communication, the electronic device comprising:

a communication circuit configured to communicate with anchor nodes provided in a UWB communication area; and

a processor configured to:

receive state information of each of moving nodes occupying channels provided by the anchor nodes to perform ranging on the anchor nodes through the communication circuit,

set a priorities of the moving nodes based on the state information, and

recover one of the channels occupied by the moving nodes based on each of the priorities.

11. The electronic device of claim 10 , wherein the processor is further configured to identify a moving node on which ranging has never been performed from among the moving nodes occupying the channels as a first moving node, and to set a priority of the first moving node to be lower than priorities of other moving nodes.

12. The electronic device of claim 11 , wherein the processor is further configured to identify a moving node on which ranging is performed by the anchor nodes from among the moving nodes occupying the channels as a second moving node, and to set a priority of the second moving node to be higher than priorities of other moving nodes.

13. The electronic device of claim 12 , wherein the processor is further configured to calculate a number of ranging anchors that is the number of anchor nodes performing ranging on the second moving node, and to set a priority between the second moving nodes based on the number of ranging anchors.

14. The electronic device of claim 13 , wherein the processor is further configured to set a priority of moving nodes having a larger number of ranging anchors to be higher than a priority of moving nodes having a smaller number of ranging anchors.

15. The electronic device of claim 12 , wherein the processor is further configured to identify moving nodes other than the first and second moving nodes among the moving nodes occupying the channels as third moving nodes, to calculate a number of expired anchors that is the number of anchor nodes that are not ranging for a time period while ranging is performed on the third moving node, and to set the priority between the third moving nodes based on the number of expired anchors.

16. The electronic device of claim 15 , wherein the processor is further configured to set a priority of moving nodes having a larger number of expired anchors to be lower than a priority of moving nodes having a smaller number of expired anchors.

17. The electronic device of claim 10 , wherein the processor is further configured to recover the channel being occupied by the moving node set to a lowest priority.

18. The electronic device of claim 10 , wherein the processor is further configured to recover one of the channels, in response to a new moving node being detected in the UWB communication area while all of the channels are occupied by the moving nodes.