Sidelink ranging and multilateration

Patent metadata

Field	Value
Publication number	US-11689883-B2
Application number	US-202016990489-A
Country	US
Kind code	B2
Filing date	Aug 11, 2020
Priority date	Feb 19, 2018
Publication date	Jun 27, 2023
Grant date	Jun 27, 2023

Abstract

A transceiver for a wireless communication system is configured to: communicate with at least one other transceiver of the system using a sidelink resource pool of the system; transmit signals on resources of the pool that are allocated to the transceiver on a period basis with equal length periods t periodA ; transmit a first signal on a first resource of the resources allocated to the transceiver, and receive a second signal from another transceiver of the system on a second resource, the second signal being transmitted by the other transceiver responsive to a reception of the first signal, the second signal being transmitted by the other transceiver on the second resource using the period t periodA based on which the resources are allocated to the transceiver; determine a distance to the other transceiver based on a time t roundA between the transmission of the first signal and the reception of the second signal from the other transceiver, and based on the period t periodA based on which the resources are allocated to the transceiver.

First claim

The invention claimed is:

1. A transceiver for a wireless communication system,
wherein the transceiver is configured to communicate with at least one other transceiver of the wireless communication system using a sidelink resource pool of the wireless communication system;
wherein the transceiver is configured to transmit signals on resources of the sidelink resource pool that are allocated to the transceiver on a period basis with equal length periods t periodA ;
wherein the transceiver is configured to transmit a first signal on a first resource of the resources allocated to the transceiver;
wherein the transceiver is configured to receive a second signal from another transceiver of the wireless communication system on a second resource, the second signal transmitted by the other transceiver responsive to a reception of the first signal, wherein the second signal is transmitted by the other transceiver on the second resource using the period t periodA based on which the resources are allocated to the transceiver;
wherein the transceiver is configured to determine a distance to the other transceiver based on a time t roundA between the transmission of the first signal and the reception of the second signal from the other transceiver, and based on the period t periodA based on which the resources are allocated to the transceiver;
wherein the second resource is one of the resources allocated to the transceiver following the first resource;
wherein the transceiver is configured to mute at least one transmission on at least one of the resources allocated to the transceiver following the first resource, to achieve at least one muted resource; and
wherein the second resource is one of the at least one muted resource.

2. The transceiver according to claim 1 ,
wherein the transceiver is configured to signal the second resource and/or the period t periodA based on which the resources are allocated to the transceiver.

3. The transceiver according to claim 1 ,
wherein the transceiver is configured to determine the distance to the other transceiver by determining a time t p the first signal and/or the second signal travels between the transceiver and the other transceiver based on
the time t roundA between the transmission of the first signal and the reception of the second signal from the other transceiver, and
the period t periodA based on which the resources are allocated to the transceiver.

4. The transceiver according to claim 3 ,
wherein the transceiver is configured to determine the distance to the other transceiver by determining the time t p the first signal and/or the second signal travels between the transceiver and the other transceiver further based on
a total response time m·T s of the other transceiver, wherein m is a natural number equal to or greater than zero, wherein T s is a response time of the other transceiver.

5. The transceiver according to claim 1 ,
wherein the transceiver is configured to determine the distance d AB to the other transceiver based on the equation:

d
AB

=

t
roundA

-

N
·

t
periodA

-

m
·

T
s

2

·
v

wherein t roundA is the time between the transmission of the first signal and the reception of the second signal, wherein N is a natural number equal to or greater than one, wherein t periodA is the period based on which the resources are allocated to the transceiver,
wherein m is a natural number equal to or greater than zero, wherein T s is a response time of the other transceiver, and wherein v is a signal propagation speed.

6. The transceiver according to claim 1 ,
wherein the second signal is transmitted by the other transceiver with a predetermined delay after the reception of the first signal or after a start of the reception of the first signal;
wherein the predetermined delay is a sum of a response time T s of the other transceiver and the period based on which the resources are allocated to the transceiver or a multiple thereof.

7. The transceiver according to claim 1 ,
wherein the first signal is configured to cause the other transceiver to transmit the second signal.

8. The transceiver according to claim 1 ,
wherein the second signal comprises ranging reference symbols.

9. The transceiver according to claim 1 ,
wherein the transceiver is served by a central transceiver of the wireless communication system, a coverage area of the central transceiver comprising one zone or a plurality of zones, wherein the transceiver is configured to operate in a first mode of operation, including D2D Mode 1 or V2X Mode 3, in which scheduling of resources for the communication with the at least one other transceiver is performed by the central transceiver;
wherein the transceiver is configured to signal the second resource and/or the period t periodA based on which the resources are allocated to the transceiver, or wherein the second resource and/or the period t periodA based on which the resources are allocated to the transceiver are signaled by the central transceiver.

10. The transceiver according to claim 9 ,
wherein the at least one muted resource is signaled using a muting pattern, the muting pattern indicating the at least one muted resource on which the transceiver expects a reception of the second signal.

11. The transceiver according to claim 1 ,
wherein the transceiver and the other transceiver are located in a same zone, wherein the transceiver is configured to operate in a second mode of operation, including D2D Mode 2 or V2X Mode 4, wherein the transceiver is configured to schedule resources for sidelink communication autonomously or by sensing free channel resources;
wherein the transceiver is configured to signal the second resource and/or the period t periodA based on which the resources are allocated to the transceiver.

12. The transceiver according to claim 1 ,
wherein the transceiver is configured to communicate with two or more other transceivers of the wireless communication system using the sidelink resource pool of the wireless communication system;
wherein the transceiver is configured to transmit a configuration message to the two or more other transceivers, wherein the configuration message comprises a resource pattern indicating one or more second resources selected out of the resources allocated to the transceiver;
wherein the transceiver is configured to receive second signals from the two or more other transceivers, wherein the second signals are transmitted by the two or more other transceivers responsive to a reception of the first signal, wherein the second signals are transmitted by the two or more other transceivers on one or more second resources using the period t periodA based on which the resources are allocated to the transceiver;
wherein the transceiver is configured, to determine distances to the two or m

Assignees

• Fraunhofer Ges Forschung

Inventors

• Alawieh Mohammad
• Perner Bastian
• Hadaschik Niels
• Franke Norbert

Classifications

• G01S5/0268

  by deriving positions from different combinations of signals or of estimated positions in a single positioning system · CPC title

• G01S5/0072

  Transmission between mobile stations, e.g. anti-collision systems · CPC title

• G01S5/145

  Using a supplementary range measurement, e.g. based on pseudo-range measurements · CPC title

• H04W4/023 Primary

  using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds · CPC title

• H04W72/04

  Wireless resource allocation · CPC title