Optimized transmission for single/double-sided two-way ranging among many devices

Patent metadata

Field	Value
Publication number	US-2020183000-A1
Application number	US-201916698695-A
Country	US
Kind code	A1
Filing date	Nov 27, 2019
Priority date	Dec 5, 2018
Publication date	Jun 11, 2020
Grant date	—

Abstract

A method of a transmit apparatus in a wireless communication system supporting ranging capability is provided. The method comprises: for a single-sided two-way ranging (SS-TWR), identifying a ranging round (RR) including a ranging initiation phase (RIP) for a set of transmit apparatuses including the transmit apparatus and a ranging response phase (RRP) for a set of receive apparatuses, wherein the RIP and the RRP comprise at least one slot; transmitting, to the set of receive apparatuses, a ranging initiation message in the RIP; and receiving, from one or more of the set of receive apparatuses, a ranging response message including information requested by the transmit apparatus in the RRP.

First claim

What is claimed is:

1 . A transmit apparatus in a wireless communication system supporting ranging capability, the transmit apparatus comprising:
a processor configured to, for a single-sided two-way ranging (SS-TWR), identify a ranging round (RR) including a ranging initiation phase (RIP) for a set of transmit apparatuses including the transmit apparatus and a ranging response phase (RRP) for a set of receive apparatuses, wherein the RIP and the RRP comprise at least one slot; and a transceiver operably connected to the processor, the transceiver configured to:
transmit, to the set of receive apparatuses, a ranging initiation message in the RIP; and
receive, from one or more of the set of receive apparatuses, a ranging response message including information requested by the transmit apparatus in the RRP.

2 . The transmit apparatus of claim 1 , wherein:
the processor is further configured to, for a double-sided two-way ranging (DS-TWR), identify a ranging final phase (RFP) included in the RR; and the transceiver is further configured to transmit in the RFP in the RR indicating a phase in which the transmit apparatus transmits a ranging final message to one or more of the set of receive apparatuses.

3 . The set of transmit apparatuses including the transmit apparatus of claim 2 , wherein the set of transmit apparatuses transmits, to the set of receive apparatuses in a scheduling mode or a contention-based mode in the RIP and the RFP:
the ranging initiation message for a DS-TWR or the SS-TWR; and a ranging final message for the DS-TWR.

4 . The set of transmit apparatuses including the transmit apparatus of claim 3 , wherein the set of transmit apparatuses receives, from one or more of the set of receive apparatuses, the ranging response message in the scheduling mode or the contention-based mode in the RRP.

5 . The transmit apparatus of claim 1 , wherein:
the processor is further configured to identify a ranging request measurement control information element (RRMC IE) for a DS-TWR or the SS-TWR; and the transceiver is further configured to:
transmit, to the set of receive apparatuses, the ranging initiation message including the RRMC IE in a contention-based mode or a scheduling mode; and
receive, from one or more of the set of receive apparatuses, the ranging response message including information requested by the transmit apparatus in the contention-based mode or the scheduling mode.

6 . The transmit apparatus of claim 1 , wherein the transceiver is further configured, at least one of, to:
transmit, to the set of receive apparatuses and other transmit apparatuses, a ranging contention phase structure IE (RCPS IE) including information of a time structure for the RR, or receive, from one or more of the set of receive apparatuses and the other transmit apparatuses, the RCPS IE including the information of the time structure for the RR, the RCPS IE comprising a contention period (CP) table length indicating a CP table and a length of CP table.

7 . The transmit apparatus of claim 6 , wherein a row element of the CP table includes:
a period indication field in two bits, to contend, indicating:
a polling period for the set of transmit apparatuses,
the RRP for the set of receive apparatuses, or
a data period (DP) for both the transmit apparatus and the set of receive apparatuses;
a time-slot index to start field; and a time-slot index to end field.

8 . A receive apparatus in a wireless communication system supporting ranging capability, the receive apparatus comprising:
a transceiver configured to receive, from a transmit apparatus of a set of transmit apparatuses, a ranging initiation message in a ranging initiation phase (RIP); and a processor operably connected to the transceiver, the processor configured to, for a single-sided two-way ranging (SS-TWR), identify a ranging round (RR) including the RIP for a set of receive apparatuses including the receive apparatus to receive and a ranging response phase (RRP) for the set of transmit apparatuses to receive, the RIP and the RRP comprising at least one slot, wherein, the transceiver is further configured to transmit, to one or more of the set of transmit apparatuses, a ranging response message including information requested by the transmit apparatus in the RRP.

9 . The receive apparatus of claim 8 , wherein:
the transceiver is further configured to receive the RFP in the RR indicating a phase in which the receive apparatus receives a ranging final message from the one or more of the set of transmit apparatuses; and the processor is further configured to, for a double-sided two-way ranging (DS-TWR), identify a ranging final phase (RFP) included in the RR.

10 . The set of receive apparatuses including the receive apparatus of claim 9 , wherein the set of receive apparatuses receives, from the set of transmit apparatuses in a scheduling mode or a contention-based mode in the RIP and the RFP:
the ranging initiation message for a DS-TWR or the SS-TWR; and a ranging final message for the DS-TWR.

11 . The set of receive apparatuses including the receive apparatus of claim 10 , wherein the set of receive apparatuses transmits, to one or more of the set of transmit apparatuses, the ranging response message in the scheduling mode or the contention-based mode in the RRP.

12 . The receive apparatus of claim 8 , wherein:
the transceiver is further configured to receive, from the set of transmit apparatuses, the ranging initiation message including the RRMC IE in a contention-based mode or a scheduling mode; and the processor is further configured to identify the RRMC IE for a DS-TWR or the SS-TWR, wherein the transceiver is further configured to transmit, to one or more of the set of transmit apparatuses, the ranging response message including information requested by the transmit apparatus in the contention-based mode or the scheduling mode.

13 . The receive apparatus of claim 8 , wherein the transceiver is further configured, at least one of, to:
receive, from the set of transmit apparatuses and other receive apparatuses, a ranging contention phase structure IE (RCPS IE) including information of a time structure for the RR, or transmit, to one or more of the set of transmit apparatuses and the other receive apparatuses, the RCPS IE including the information of the time structure for the RR, the RCPS IE comprising a contention period (CP) table length indicating a CP table and a length of CP table.

14 . The receive apparatus of claim 13 , wherein a row element of the CP table includes:
a period indication field in two bits, to contend, indicating:
a polling period for the set of transmit apparatuses,
the RRP for the set of receive apparatuses, or
a data period (DP) for both the transmit apparatus and the set of receive apparatuses;
a time-slot index to start field; and a time-slot index to end field.

15 . A method of a transmit apparatus in a wireless communication system supporting ranging capability, the method comprising:
for a single-sided two-way ranging (SS-TWR), identifying a ranging round (RR) including a ranging initiation phase (RIP) for a set of transmit apparatuses including the transmit apparatus and a ranging response phase (RRP) for a set of receive apparatuses, wherein the RIP and the RRP comprise at least one slot; transmitting, to the set of receive apparatuses, a ranging initiation message in the RIP; and receiving, from one or more of the set of receive apparatuses, a ranging response message including information requested by the transmit apparatus in the RRP.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Li Zheda
• Padaki Aditya V
• Ng Boon Loong

Classifications

• G01S13/767 Primary

  Responders; Transponders (teaching or practice apparatus for gun-aiming or gun-laying using reflecting targets or active targets F41G3/26) · CPC title

• G01S13/765

  with exchange of information between interrogator and responder · CPC title

• H04W64/00

  Locating users or terminals {or network equipment} for network management purposes, e.g. mobility management · CPC title

• H04W74/0816

  with collision avoidance · CPC title

• H04W84/18

  Self-organising networks, e.g. ad-hoc networks or sensor networks · CPC title