Determining a relative position between devices

Patent metadata

Field	Value
Publication number	US-9715019-B2
Application number	US-201514949371-A
Country	US
Kind code	B2
Filing date	Nov 23, 2015
Priority date	Aug 14, 2015
Publication date	Jul 25, 2017
Grant date	Jul 25, 2017

Abstract

Methods and devices for determining a relative position between a first device and a second device are described. Measurement signals are transmitted from the first device to the second device. Each measurement signal is associated with a corresponding radio frequency spectrum in which the measurement signal is transmitted. A first radio frequency spectrum associated with a first measurement signal has a different frequency range than a second radio frequency spectrum associated with a second measurement signal of the plurality of measurement signals. At the second device the relative position based on at least the first and second measurement signals is determined.

First claim

The invention claimed is:

1. A method for determining a relative position between a first device and a second device, the method comprising:
determining a channel selection indicating a list of a plurality of channels of a wireless transmission standard, wherein each channel of the plurality of channels of the list is to be used in the order of the list for a transmission of corresponding measurement signals;
transmitting the channel selection at least partly in reserved fields of a parameter field defined in the wireless transmission standard;
wirelessly transmitting a plurality of measurement signals from the first device to the second device, wherein each measurement signal of the plurality of measurement signals is associated with a corresponding radio frequency spectrum, in which the measurement signal is transmitted, wherein a first radio frequency spectrum associated with a first measurement signal of the plurality of measurement signals has a different frequency range than a second radio frequency spectrum associated with a second measurement signal of the plurality of measurement signals; and
determining, at the second device, the relative position based on at least the first and second measurement signals,
wherein each corresponding radio frequency spectrum corresponds to a radio frequency spectrum of a corresponding channel of the wireless transmission standard.

2. The method according to claim 1 , wherein the first radio frequency spectrum is frequency-wise separated from the second radio frequency spectrum.

3. The method according to claim 1 , wherein the first measurement signal is transmitted during a first time interval and the second measurement signal is transmitted during a second time interval, the first time interval being time-wise separated from the second time interval.

4. The method according to claim 1 , the method further comprising:
defining a temporal sequence order in which the plurality of measurement signals are to be transmitted from the first device to the second device,
wherein the wirelessly transmitting the plurality of measurement signals from the first device to the second device comprises:
repeatedly transmitting the plurality of measurement signals from the first device to the second device in the defined temporal sequence order.

5. The method according to claim 1 , wherein determining the relative position based on at least the first and second measurement signals comprises at least one of:
determining a distance between the first device and the second device based on a time information comprised in at least the first and second measurement signals, or
determining a direction in which the first device is located with respect to the second device based on a time information comprised in at least the first and second measurement signals.

6. A method for determining a relative position between a first device and a second device, the method comprising:
selecting a channel selection algorithm from a predefined set of channel selection algorithms, wherein each channel selection algorithm is configured to generate a list of a plurality of channels of a wireless transmission standard, wherein each channel of the list is to be used in the order of the list for a transmission of corresponding measurement signals; and
transmitting an information indicating the selected channel selection algorithm at least partly in reserved fields of a parameter field defined in the wireless transmission standard;
wirelessly transmitting a plurality of measurement signals from the first device to the second device, wherein each measurement signal of the plurality of measurement signals is associated with a corresponding radio frequency spectrum, in which the measurement signal is transmitted, wherein a first radio frequency spectrum associated with a first measurement signal of the plurality of measurement signals has a different frequency range than a second radio frequency spectrum associated with a second measurement signal of the plurality of measurement signals; and
determining, at the second device, the relative position based on at least the first and second measurement signals,
wherein each corresponding radio frequency spectrum corresponds to a radio frequency spectrum of a corresponding channel of the wireless transmission standard.

7. A device, comprising:
a processor configured to generate a predefined set of channel selection algorithms, wherein each channel selection algorithm is configured to generate a plurality of channels of a wireless transmission standard, wherein each channel of the list is to be used in the order of the list for a transmission of corresponding measurement signals, and
a receiver configured to wirelessly receive a plurality of measurement signals from an other device, wherein each measurement signal of the plurality of measurement signals is associated with a corresponding radio frequency spectrum, in which the measurement signal is received, wherein a first radio frequency spectrum associated with a first measurement signal of the plurality of measurement signals has a different frequency range than a second radio frequency spectrum associated with a second measurement signal of the plurality of measurement signals,
wherein the processor is configured to determine a relative position between the device and the other device based on at least the received first and second measurement signals and select a channel selection algorithm from the predefined set of channel selection algorithms,
wherein each corresponding radio frequency spectrum corresponds to a radio frequency spectrum of a corresponding channel of the wireless transmission standard.

8. A device, comprising:
a processor configured to determine a channel selection indicating a list of a plurality of channels of a wireless transmission standard, wherein each channel of the plurality of channels of the list is to be used in the order of the list for a transmission of corresponding measurement signals,
a transmitter configured to transmit the channel selection at least partly in reserved fields of a parameter field defined in the wireless transmission standard,
wherein the processor is further configured to generate a plurality of measurement signals; and
wherein the transmitter is further configured to wirelessly transmit the plurality of measurement signals, wherein each measurement signal of the plurality of measurement signals is associated with a corresponding radio frequency spectrum, in which the measurement signal is transmitted, wherein a first radio frequency spectrum associated with a first measurement signal of the plurality of measurement signals has a different frequency range than a second radio frequency spectrum associated with a second measurement signal of the plurality of measurement signals, wherein the measurement signals are configured such that an other device receiving the plurality of measuring signals can determine a relative position between the other device and the device based on at least the received first and second measurement signals,
wherein each corresponding radio frequency spectrum corresponds to a radio frequency spectrum of a corresponding channel of the wireless transmission standard.

9. The device according to claim 7 , wherein the device comprises at least one of
a mobile telephone,
a tablet computer,
a notebook computer,
a camera,
a mobile navigation system,
a mobile media player,
an access point, or
a base station.

10. The device according to claim 8 , wherein the device comprises at least one of:
a mobile telephone,
a tablet computer,
a notebook computer,
a camera,
a mobile navigation system,
a mobile media player,
an

Assignees

• Sony Mobile Communications Inc
• Sony Corp

Inventors

• Larsson Bo
• Agardh Kåre
• Persson Magnus
• Karlsson Peter

Classifications

• G01S3/48

  the waves arriving at the antennas being continuous or intermittent and the phase difference of signals derived therefrom being measured · CPC title

• G01S19/51 Primary

  Relative positioning · CPC title

• H04B7/08

  at the receiving station · CPC title

• H04W4/023 Primary

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