Wireless communication device and method for transmitting energy by optimum parameters

• US 10,097,991 B2
• Filed: 03/13/2017
• Issued: 10/09/2018
• Est. Priority Date: 09/20/2016
• Status: Active Grant

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Tandai, Tomoya, Aoki, Tsuguhide, Onizuka, Kohei
• Primary Examiner(s): SANDIFORD, DEVAN A
• Application Number:
  US15/457,219
• Publication Number:
  US 20180084406A1
• Time in Patent Office: 575 Days
• CPC Class Codes: H02J 50/20 using microwaves or radio frequency waves
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H04W 28/0215 based on user or device properties, e.g. MTC-capable devices services for machine-to-machine communication [M2M] or machine type communication [MTC] H04W4/70; wireless resource selection or allocation plan definition based on terminal or device properties H04W72/51
• CPC Class Codes: H04W 4/80 Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
• CPC Class Codes: H04W 8/24 Transfer of terminal data
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

According to one embodiment, a wireless communication device includes: a first transmitter configured to transmit a first frame to instruct transmission prohibition to a first wireless communication device, and to transmit a signal to a second wireless communication device during a period in which the transmission is prohibited; and a first receiver configured to receive power reception amount information corresponding to the signal after the signal is transmitted.

Claims

1. A wireless communication device comprising:

a first transmitter configured to transmit a first frame to instruct prohibition of transmission to a first wireless communication device, and to transmit a signal to a second wireless communication device during a period in which the transmission is prohibited;

a first receiver configured to receive power reception amount information corresponding to the signal after the signal is transmitted; and

a second transmitter configured to transmit measurement instruction information specifying a first measurement period, wherein

the first transmitter is configured to transmit the signal during the first measurement period.

2. The wireless communication device according to claim 1, wherein

the first transmitter is configured to generate the signal on the basis of a parameter specifying weights for a plurality of first antennas, and transmit the signal to a plurality of second wireless communication devices, and

the first receiver is configured to receive the power reception information from the second wireless communication devices.

3. The wireless communication device according to claim 1, further comprising a second receiver, wherein

the measurement instruction information specifies a second measurement period,

the second receiver is configured to receive, during the second measurement period, a second frame a transmission source of which is the first wireless communication device, and

the first receiver is configured to receive reception power amount information corresponding to the first measurement period and reception power amount information corresponding to the second measurement period.

4. The wireless communication device according to claim 3, wherein the first transmitter is configured to transmit, during the second measurement period, a third frame addressed to the first wireless communication device.

5. The wireless communication device according to claim 1, wherein

the first transmitter has a first mode to periodically transmit a beacon frame of a first length and a second mode to periodically transmit a beacon frame of a second length shorter than the first length, and is configured to execute the first mode after start-up of the wireless communication device, and shift the first mode to the second mode when a predetermined condition is established.

6. The wireless communication device according to claim 1, wherein the first transmitter is configured to intermittently transmit a frame addressed to the wireless communication device after start-up of the wireless communication device, and stop intermittent transmission of the frame when a predetermined condition is established.

7. The wireless communication device according to claim 1, further comprising

at least one first antenna, and

at least one second antenna, wherein

the first transmitter is configured to transmit the first frame and transmit the signal, through the first antenna, and

the first receiver is configured to receive the power reception amount information through the second antenna.

8. The wireless communication device according to claim 1, further comprising

at least one first antenna, wherein

the first transmitter is configured to transmit the first frame and transmit the signal, via the first antenna, and

the first receiver is configured to receive the reception power amount information via the first antenna.

9. A wireless communication method performed by a wireless communication device, comprising:

transmitting a first frame to instruct prohibition of transmission to a first wireless communication device;

transmitting a signal to a second wireless communication device during a period in which the transmission is prohibited;

receiving power reception amount information corresponding to the signal after the signal is transmitted;

transmitting measurement instruction information specifying a first measurement period; and

transmitting the signal during the first measurement period.

10. The wireless communication method according to claim 9, further comprising

generating the signal on the basis of a parameter specifying weights for a plurality of first antennas, and transmitting the signal to a plurality of second wireless communication devices, and

receiving the power reception information from the second wireless communication devices.

11. The wireless communication method according to claim 9, further wherein

the measurement instruction information specifies a second measurement period,

the method comprising:

receiving, during the second measurement period, a second frame a transmission source of which is the first wireless communication device, and

receiving reception power amount information corresponding to the first measurement period and reception power amount information corresponding to the second measurement period.

12. The wireless communication method according to claim 11, further comprising:

transmitting, during the second measurement period, a third frame addressed to the first wireless communication device.

13. The wireless communication method according to claim 9, wherein

executing a first mode to periodically transmit a beacon frame having a first length after start-up of the wireless communication device, and shifting the first mode to the second mode when a predetermined condition is established, the second mode being a mode to periodically transmit a beacon frame having a second length shorter than the first length.

14. The wireless communication method according to claim 9, further comprising:

transmitting intermittently a frame addressed to the wireless communication device after start-up of the wireless communication device, and stopping intermittent transmission of the frame when a predetermined condition is established.

15. The wireless communication method according to claim 9, further comprising

transmitting the first frame and transmitting the signal, through a first antenna, and

receiving the power reception amount information through a second antenna.

16. The wireless communication method according to claim 9, further comprising

transmitting the first frame and transmitting the signal, via a first antenna, and

receiving the reception power amount information via the first antenna.