Apparatus and method for transmitting and receiving information and power in wireless communication system

• US 10,411,764 B2
• Filed: 10/31/2018
• Issued: 09/10/2019
• Est. Priority Date: 10/31/2017
• Status: Active Grant

• Current Assignee: Industry Academic Cooperation Foundation
• Original Assignee: Industry Academic Cooperation Foundation
• Inventors: Lee, Jang-Won, Kim, Do-Yup, Lee, Hyun-Suk, Kim, Kyeong-Won
• Primary Examiner(s): Gonzales, April G
• Application Number:
  US16/176,617
• Publication Number:
  US 20190132028A1
• Time in Patent Office: 314 Days
• Field of Search: 455 411
• CPC Class Codes: H04B 5/72 for local intradevice communication
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

The transmitting and receiving information and power in a wireless communication system are provided. A transmitting apparatus includes a transceiver, and at least one processor coupled with the transceiver. The at least one processor is configured to generate a symbol including a first set of signals for transferring power and a first information value or a second set of signals for transferring power and a second information value, and transmit the symbol. The first information and the second information may be indicated by a result value determined based on a predefined rule on the basis of a first value acquired by forwardly rectifying the symbol and a second value acquired by reversely rectifying the symbol. Each of the first value and the second value may be determined based on at least one of frequencies, magnitudes, or phases of the signals included in the symbol.

Claims

1. A transmitting apparatus in a wireless communication system, comprising:

a transceiver; and

at least one processor coupled with the transceiver,

wherein the at least one processor is configured to;

generate a symbol including a sum of signals for transferring power, the symbol indicating an information value among a plurality of candidate values, and

transmit the symbol,

wherein the information value is identified base on a function of a first magnitude value of a first rectified signal acquired by forwardly rectifying the symbol and a second magnitude value of a second rectified signal acquired by reversely rectifying the symbol,

wherein an amount of power transferred by the symbol is determined based on electric potential difference of the first rectified signal and the second rectified signal, and

wherein the signals are different in at least one of transmission powers, frequencies, magnitudes, or phases of the signals included in the symbol.

2. The transmitting apparatus of claim 1, wherein in the symbol has a same transmission power regardless of which information value is indicated by the symbol.

3. The transmitting apparatus of claim 1, wherein the function includes one of:

a ratio of the first magnitude value to the second magnitude value,

a ratio of the second value to the first magnitude value,

the first magnitude value,

the second magnitude value,

subtracting the second value from the first magnitude value,

subtracting the first value from the second magnitude value, or

summing the first value and the second magnitude value.

4. The transmitting apparatus of claim 1, wherein the transmission power, the frequencies, magnitudes, or phases of the signals are determined such that a difference between result values of the function that correspond to the plurality of candidate values is maximized.

5. The transmitting apparatus of claim 1, wherein the at least one processor is further configured to operate the transmitting apparatus in one of a normal mode in which only data is transmitted or a power transmission mode in which both data and power are received.

6. The transmitting apparatus of claim 5, wherein the at least one processor is further configured to operate the transmitting apparatus in the power transmission mode in response to receiving a request from a receiving apparatus.

7. A receiving apparatus in a wireless communication system, comprising:

a transceiver; and

at least one processor coupled with the transceiver,

wherein the at least one processor is configured to;

receive a symbol including a sum of signals for transferring power, the symbol indicating an information value among a plurality of candidate values,

detect the information value from the symbol, and

harvest the power from the symbol,

wherein the information value is identified based on a function of a first magnitude value of a first rectified signal acquired by forwardly rectifying the symbol and a second magnitude value of a second rectified signal acquired by reversely rectifying the symbol,

wherein an amount of power transferred by the symbol is determined based on electric potential difference of the first rectified signal and the second rectified signal, and

wherein the signals are different in at least one of transmission powers, frequencies, magnitudes, or phases of the signals included in the symbol.

8. The receiving apparatus of claim 7, wherein in the symbol has a same transmission power regardless of which information value is indicated by the symbol.

9. The receiving apparatus of claim 7, wherein the predefined rule includes one of:

a ratio of the first magnitude value to the second magnitude value,

a ratio of the second magnitude value to the first magnitude value,

the first magnitude value,

the second magnitude value,

subtracting the second magnitude value from the first magnitude value,

subtracting the first magnitude value from the second magnitude value, or

summing the first magnitude value and the second magnitude value.

10. The receiving apparatus of claim 7, wherein the transmission power, the frequencies, magnitudes, or phases of the signals are determined such that a difference between result values of the function that correspond to the plurality of candidate values is maximized.

11. The receiving apparatus of claim 7, wherein the at least one processor is further configured to:

forwardly rectify the symbol to determine the first magnitude value; and

backwardly rectify the symbol to determine the second magnitude value.

12. The receiving apparatus of claim 11, wherein the at least one processor is further configured to transmit a request for the power transmission mode.

13. The receiving apparatus of claim 12, wherein the request is transmitted, if a remaining energy amount of the receiving apparatus is less than a threshold.

14. A method for operating a receiving apparatus in a wireless communication system, the method comprising:

receiving a symbol including a sum of signals for transferring, the symbol indicating an information value among a plurality of candidate values;

detecting the information value from the symbol; and

harvesting the power from the symbol,

wherein the information value is identified based on a function first magnitude value of a first rectified signal acquired by forwardly rectifying the symbol and a second magnitude value of a second rectified signal acquired by reversely rectifying the symbol, and

wherein the signals are different in at least one of transmission powers, frequencies, magnitudes, or phases of the signals included in the symbol.

15. The method of claim 14, wherein in the symbol has a same transmission power regardless of which information value is indicated by the symbol.

16. The method of claim 14, wherein the function includes one of:

a ratio of the first magnitude value to the second magnitude value,

a ratio of the second magnitude value to the first magnitude value,

the first magnitude value,

the second magnitude value,

subtracting the second magnitude value from the first magnitude value,

subtracting the first magnitude value from the second magnitude value, or

summing the first magnitude value and the second magnitude value.

17. The method of claim 14, wherein the transmission power, the frequencies, magnitudes, or phases of the signals are determined such that a difference between result values of the function that correspond to the plurality of candidate values is maximized.

18. The method of claim 14, further comprising:

forwardly rectifying the symbol to determine the first magnitude value; and

backwardly rectifying the symbol to determine the second magnitude value.

19. The method of claim 14, further comprising:

transmitting a request for a power transmission mode, if a remaining energy amount of the receiving apparatus is less than a threshold.