Control of ranging initiators and responders in an UWB network
A method and transmit/receive apparatus in a wireless communication system supporting ranging capability are provided. The method and the transmit/receive apparatus comprises: identifying ranging apparatuses; identifying a ranging control message (RCM) including a ranging device management information element (RDM IE) and roles of the ranging apparatuses, the RDM IE including a content field, wherein the ranging apparatuses include the transmit apparatus and at least one receive apparatus; and transmitting, to the ranging apparatuses over a broadcast channel, the RCM including the RDM IE in a ranging round (RR).
1. A controller device in a wireless communication system, the controller device comprising:
a processor configured to
identify ranging devices participating in a multi-node ranging and roles of the ranging devices; and
a transceiver operably coupled to the processor, the transceiver configured to transmit, to plurality of controlees, a ranging control message (RCM) comprising information indicating addresses for the ranging devices and information indicating the roles of the ranging devices, the roles of the ranging devices including one or more initiators or one or more responders,
wherein the processor is further configured to perform, based on the RCM, a ranging with at least one ranging device among the ranging devices.
2. The controller device of claim 1 , wherein the ranging comprises one of a scheduling-based ranging or a contention-based ranging for the ranging devices.
3. The controller device of claim 2 , wherein the RCM comprises, in case that the scheduling-based ranging is performed, an information element (IE) comprising information indicating the ranging devices, information indicating roles, and resource assignment information for the ranging devices.
4. The controller device of claim 3 , wherein the IE comprises:
a first field comprising the information indicating the ranging devices and the information indicating the roles and resource assignment information; and
a second field comprising information indicating a number of elements in the first field.
5. The controller device of claim 4 , wherein the number of elements in the first field indicates a number of time slots in a ranging round.
6. The controller device of claim 4 , wherein each of the first field comprises:
a slot index field for a time slot that is scheduled for a ranging device;
an address field for identifying the ranging device; and
a field for indicating a role of the ranging device.
7. The controller device of claim 6 , wherein:
in case that a value of the field for indicating the role of the ranging device is set to a zero, the role of the ranging device is determined as a responder; and
in case that the value of the field for indicating the role of the ranging device is not set to the zero, the role of the ranging device is determined as an initiator.
8. The controller device of claim 2 , wherein the RCM comprises, in case that the contention-based ranging is performed, an information element (IE) comprising the information indicating the ranging devices and the information indicating the roles of the ranging devices.
9. The controller device of claim 8 , wherein the IE comprises:
a first field comprising the information indicating the ranging devices and the information indicating the roles of the ranging devices; and
a second field indicating a number of elements in the first field.
10. The controller device of claim 9 , wherein the number of elements in the first field indicates a number of the ranging devices.
11. The controller device of claim 9 , wherein each element of the first field comprises:
an address field for identifying a ranging device; and
a field for indicating a role of the ranging device.
12. The controller device of claim 11 , wherein:
in case that a value of the field for indicating the role of the ranging device is set to a zero, the role of the ranging device is determined as a responder; and
in case that the value of the field for indicating the role of the ranging device is not set to the zero, the role of the ranging device is determined as an initiator.
13. The controller device of claim 2 , wherein the RCM further comprises an advanced ranging control (ARC) IE including:
a multi-node mode field indicating that the ranging is the multi-node ranging involving a plurality of devices; and
a scheduling mode field indicating whether the scheduling-based ranging is performed or the contention-based ranging is performed.
14. A method of a controller device in a wireless communication system, the method comprising:
identifying ranging devices participating in a multi-node ranging and roles of the ranging devices;
transmitting, to a plurality of controlees, a ranging control message (RCM) comprising information indicating addresses for the ranging devices and information indicating the roles of the ranging devices, wherein the roles of the ranging devices include one or more initiators or one or more responders; and
performing, based on the RCM, a ranging with at least one ranging device among the ranging devices.
15. The method of claim 14 , wherein the ranging comprises one of a scheduling-based ranging or a contention-based ranging for the ranging devices.
16. The method of claim 15 , wherein the RCM comprises, in case that the scheduling-based ranging is performed, an information element (IE) comprising information indicating the ranging devices, information indicating roles, and resource assignment information for the ranging devices.
17. The method of claim 16 , wherein the IE comprises:
a first field comprising the information indicating the ranging devices and the information indicating the roles and resource assignment information; and
a second field comprising information indicating a number of elements in the first field.
18. The method of claim 17 , wherein the number of elements in the first field indicates a number of time slots in a ranging round.
19. The method of claim 17 , wherein each element of the first field comprises:
a slot index field for a time slot that is scheduled for a ranging device;
an address field for identifying the ranging device; and
a field for indicating a role of the ranging device.
20. The method of claim 19 , wherein:
in case that a value of the field for indicating the role of the ranging device is set to a zero, the role of the ranging device is determined as a responder; and
in case that the value of the field for indicating the role of the ranging device is not set to the zero, the role of the ranging device is determined as an initiator.
21. The method of claim 15 , wherein the RCM comprises, in case that the contention-based ranging is performed, an information element (IE) comprising the information indicating the ranging devices and the information indicating the roles of the ranging devices.
22. The method of claim 21 , wherein the IE comprises:
a first field comprising the information indicating the ranging devices and the information indicating the roles of the ranging devices; and
a second field indicating a number of elements in the first field.
23. The method of claim 22 , wherein the number of elements in the first field indicates a number of the ranging devices.
24. The method of claim 22 , wherein each element of the first field comprises:
an address field for identifying a ranging device; and
a field for indicating a role of the ranging device.
25. The method of claim 24 , wherein:
in case that a value of the field for indicating the role of the ranging device is set to a zero, the role of the ranging device is determined as a responder; and
in case that the value of the field for indicating the role of the ranging device is not set to the zero, the role of the ranging device is determined as an initiator.
26. The method of claim 15 , wherein the RCM further comprises an advanced ranging control (ARC) IE including:
a multi-node mode field indicating that the ranging is the multi-node ranging involving a plurality of devices; and
a scheduling mode field indicating whether the scheduling-based ranging is performed or the contention-based ranging is performed.