Communication in a resonance magnetic coupled system

Patent metadata

Field	Value
Publication number	US-2022038136-A1
Application number	US-201917312130-A
Country	US
Kind code	A1
Filing date	Dec 17, 2019
Priority date	Dec 17, 2018
Publication date	Feb 3, 2022
Grant date	—

Abstract

A resonance magnetic coupling (RMC) communication may be enabled between devices. A device may use a discovery mechanism to transmit and exchange information. A device may use the discovery mechanism to establish a RMC communication channel and may determine its parameterization. A device using a RMC communication may transmit a discovery signal to determine channelization and/or properties of the RMC link. The discovery signal may be generated in the form of a beacon transmission. A signal sequence may be employed for a discovery signal. A device using a RMC communication may transmit a sequence of beacon or discovery signals to track characteristics of the RMC link. Beacon scheduling may be used for RMC communications, and the communication channel may not be static and may be a function of distance and orientation. A device using a RMC communication may sense the channel for potential beacon or sequence signals from other devices.

First claim

1 . A first wireless transmit/receive unit (WTRU) comprising:
a processor configured to:
transmit a spread spectrum signal in a bandwidth;
receive a first response from a second WTRU, wherein the first response comprises a first signal-to-noise-ratio (SNR) value;
determine that the first SNR value associated with the first response from the second WTRU is below a threshold, wherein the first response is in the bandwidth;
based on the determination that the first SNR value associated with the first response is below the threshold, split the bandwidth into a first sub-band and a second sub-band;
transmit the spread spectrum signal in the first sub-band and the second sub-band; and
determine a second SNR value associated with a second response in the first sub-band or the second sub-band, wherein:
on a condition that the second SNR value associated with the second response in the first sub-band or the second sub-band is above the threshold, wherein the processor is further configured to:
determine a parameter associated with the second WTRU based on the second response in the first sub-band or the second sub-band,
determine a first channel in the first sub-band or a second channel in the second sub-band based on the parameter, and
establish a link between the first WTRU and the second WTRU using at least one of the first channel or the second channel.

2 . (canceled)

3 . The first WTRU of claim 1 , wherein on a condition that the second SNR value associated with the second response in the first sub-band or the second sub-band is below the threshold, the processor is further configured to:
split the first sub-band into a third sub-band and a fourth sub-band, and split the second sub-band into a fifth sub-band and a sixth sub-band; transmit the spread spectrum signal in the third sub-band, the fourth sub-band, the fifth sub-band, and the sixth sub-band; and determine a third SNR value associated with a third response in at least one of the third sub-band, the fourth sub-band, the fifth sub-band, or the sixth sub-band.

4 . The first WTRU of claim 1 , wherein the parameter associated with the second WTRU comprises one or more of an ID associated with the second WTRU, a first loop-to-coil coupling coefficient associated with the first WTRU, a second loop-to-coil coupling coefficient associated with the second WTRU, a frequency in at least one of the first channel or the second channel, or a gain.

5 . The first WTRU of claim 1 , wherein the processor is further configured to:
determine a quality information associated with the link between the first WTRU and the second WTRU;
on a condition that the quality information associated with the link is below a quality threshold, adjust at least one of the first channel or the second channel or adjust the one or more of a first loop-to-coil coupling coefficient or a second loop-to-coil coupling coefficient; and
on a condition that the link is above the quality threshold, continue to monitor the link.

6 . The first WTRU of claim 1 , wherein a power level associated with the first sub-band or the second sub-band is equal to a power level associated with the bandwidth.

7 . The first WTRU of claim 1 , wherein the processor is configured to:
determine that the first SNR value associated with the first response in the bandwidth is above the threshold: based the determination, determine the parameter associated with the second WTRU based on the first response in the bandwidth; determine a third channel in the bandwidth based on the parameter; and establish a link between the first WTRU and the second WTRU using the determined channel.

8 . The first WTRU of claim 1 , wherein the first response is a reflected signal from the second WTRU.

9 . The first WTRU of claim 1 , wherein the processor is further configured to:
transmit a message to the second WTRU, wherein the message indicates that the link has been established.

10 . A method performed by a first wireless transmit/receive unit (WTRU) comprising:
transmitting a spread spectrum signal in a bandwidth; receiving a first response from a second WTRU, wherein the first response comprises a first signal-to-noise-ratio (SNR) value; determining that the first SNR value associated with the first response from the second WTRU is below a threshold, wherein the first response is in the bandwidth; based on the determination that the first SNR value associated with the first response is below the threshold, splitting the bandwidth into a first sub-band and a second sub-band; transmitting the spread spectrum signal in the first sub-band and the second sub-band; and determining a second SNR value associated with a second response in the first sub-band or the second sub-band, wherein:
on a condition that the second SNR value associated with the second response in the first sub-band and the second sub-band is above the threshold, wherein the method further comprises:
determining a parameter associated with the second WTRU based on the second response in the first sub-band or the second sub-band,
determining a first channel in the first sub-band or a second channel in the second sub-band based on the parameter, and
establishing a link between the first WTRU and the second WTRU using at least one of the first channel or the second channel.

11 . (canceled)

12 . The method of claim 10 , wherein on a condition that the second SNR value associated with the second response in the first sub-band or the second sub-band is below the threshold, the method further comprising:
splitting the first sub-band into a third sub-band and a fourth sub-band, and splitting the second sub-band into a fifth sub-band and a sixth sub-band; transmitting the spread spectrum signal in the third sub-band, the fourth sub-band, the fifth sub-band, and the sixth sub-band; and determining whether a third SNR value associated with a third response in at least one of the third sub-band, the fourth sub-band, the fifth sub-band, or the sixth sub-band.

13 . The method of claim 10 , wherein the parameter associated with the second WTRU comprises one or more of an ID associated with the second WTRU, a first loop-to-coil coupling coefficient associated with the first WTRU, a second loop-to-coil coupling coefficient associated with the second WTRU, a frequency in at least one of the first channel or the second channel, or a gain.

14 . The method of claim 10 , wherein the method further comprises:
determining a quality information associated with the link between the first WTRU and the second WTRU;
on a condition that the quality information associated with the link is below a quality threshold, adjusting at least one of the first channel or the second channel or adjusting the one or more of a first loop-to-coil coupling coefficient or a second loop-to-coil coupling coefficient; and
on a condition that the link is above the quality threshold, continuing to monitor the link.

15 . The method of claim 10 , wherein the method comprises:
determining that the first SNR value associated with the first response in the bandwidth is above the threshold; based on the determination, determining the parameter associated with the second WTRU based on the first response in the bandwidth; determining a third channel in the bandwidth based on the parameter; and establishing a link between the first WTRU and the second WTRU using the determined channel.

16 . The method of claim 10 , wherein the first response is a reflected signal from the second WTRU, a power level associated with the first sub-band or the second su

Assignees

• Idac Holdings Inc

Inventors

• Cabrol Patrick
• Hague Tanbir
• Pragada Ravikumar
• Rudolf Marian
• Balasubramanian Anantharaman
• Elkotby Hussain

Classifications

• H04B17/336 Primary

  Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR] · CPC title

• H04W76/14

  Direct-mode setup · CPC title

• H04B5/79

  for data transfer in combination with power transfer · CPC title

• H04B5/72

  for local intradevice communication · CPC title

• H04B5/26 Primary

  using coils · CPC title