METHOD AND APPARATUS FOR TRANSMITTING INTERFERENCE INFORMATION FOR NETWORK ASSISTED INTERFERENCE CANCELLATION AND SUPPRESSION IN WIRELESS COMMUNICATION SYSTEM

• US 20150271830A1
• Filed: 03/20/2015
• Published: 09/24/2015
• Est. Priority Date: 03/20/2014
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Lee, Hyojin, Kim, Younsun, Kim, Youngbum, Lee, Juho, Ji, Hyoungju, Shin, Cheolkyu, Kwak, Yongjun
• Granted Patent: US 9,860,103 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 1/206 for modulated signals
• CPC Class Codes: H04L 27/0012 arrangements for identifying the type of modulation
• CPC Class Codes: H04L 27/366 Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator
• CPC Class Codes: H04L 27/38 Demodulator circuits; Receiver circuits
• CPC Class Codes: H04L 5/0073 Allocation arrangements that take into account other cell interferences for intercell interference mitigation or co-ordination in orthogonal multiplex systems H04J11/005

Abstract

A method for transmitting interference related control information in order to improve a reception performance of a terminal that receives a downlink in a cellular mobile communication system based on the LTE-A system includes receiving a higher layer control message including probability information of a modulation scheme for an interference signal, from a base station, and performing error-correcting coding using a probability value of a modulation scheme for an interference signal, which is included in the higher layer control message. A base station in a mobile communication system, the base station includes a controller configured to generate probability information of a modulation scheme for an interference signal, and transmit, to the terminal, a higher layer control message comprising the probability information of the modulation scheme for the interference signal.

Claims

1. A communication method for a terminal, the communication method comprising:

receiving a higher layer control message comprising probability information regarding a modulation scheme for an interference signal from a base station, the probability information comprising a probability value of the modulation scheme; and

performing an error-correcting coding using the probability value.

2. The communication method of claim 1, wherein performing the error-correcting coding comprises:

receiving a physical layer control message comprising identification information of the probability information of the modulation scheme for the interference signal, from the base station;

identifying the probability value of the modulation scheme for the interference signal, which corresponds to the identification information of the probability information of a modulation scheme of an interference signal, in the higher layer control message; and

performing error-correcting coding using the identified probability value of a modulation scheme for an interference signal.

3. The communication method of claim 1, wherein the probability information of a modulation scheme for the interference signal includes at least one of a first probability of the interference signal being modulated in QPSK, a second probability of the interference signal being modulated in 16QAM, and a third probability of the interference signal being modulated in 64QAM.

4. The communication method of claim 3, wherein the probability information of the modulation scheme for an interference signal further includes the number of possible modulation schemes of the interference signal and an index of the probability value of the modulation scheme for the interference signal.

5. The communication method of claim 1, wherein, the performing the error-correcting coding, the error-correcting coding is performed using an equation,

6. A communication method for a base station, the communication method comprising:

configuring probability information of a modulation scheme for an interference signal; and

transmitting a higher layer control message including the probability information of a modulation scheme for an interference signal, to a terminal.

7. The communication method of claim 6, further comprising:

transmitting a physical layer control message comprising identification information of the probability information of the modulation scheme for the interference signal, to the terminal.

8. The communication method of claim 6, wherein the probability information of a modulation scheme for the interference signal comprises at least one of a first probability of the interference signal being modulated in QPSK, a second probability of the interference signal being modulated in 16QAM, and a third probability of that the interference signal being modulated in 64QAM.

9. The communication method of claim 8, wherein the probability information of a modulation scheme for an interference signal further comprises the number of possible modulation schemes of the interference signal and an index of the probability value of the modulation scheme for the interference signal.

10. The communication method of claim 8, wherein the probability information is used to perform a error-correcting coding by a terminal.

11. A terminal in a mobile communication system, the terminal comprising:

a communication unit configured to transmit or receive a signal to or from a base station; and

a controller configured to;

receive, from the base station, a higher layer control message comprising probability information of a modulation scheme for an interference signal, the probability information comprising a probability value of the modulation scheme; and

perform a error-correcting coding using the probability value.

12. The terminal of claim 11, wherein the controller is further configured to:

receive, from the base station, a physical layer control message comprising identification information of the probability information,

identify a probability value corresponding to the identification information of the probability information in the higher layer control message, and

perform a error-correcting coding using the identified probability value.

13. The terminal of claim 11, wherein the probability information of a modulation scheme for an interference signal comprises at least one of a first probability of the interference signal being modulated in QPSK, a second probability of the interference signal being modulated in 16QAM, and a third probability value that the interference signal being modulated in 64QAM.

14. The terminal of claim 13, wherein the probability information of the modulation scheme for the interference signal further comprise the number of possible modulation schemes of the interference signal and an index of the probability value of the modulation scheme for the interference signal.

15. The terminal of claim 11, wherein the controller is further configured to perform the error-correcting coding using an equation,

16. A base station in a mobile communication system, the base station comprising:

a communication unit configured to transmit or receive a signal to or from a terminal; and

a controller configured to;

generate probability information of a modulation scheme for an interference signal; and

transmit, to the terminal, a higher layer control message comprising the probability information of the modulation scheme for the interference signal.

17. The base station of claim 16, wherein the controller is further configured to transmit, to the terminal, a physical layer control message comprising identification information of the probability information of the modulation scheme for the interference signal.

18. The base station of claim 16, wherein the probability information of a modulation scheme for an interference signal comprises at least one of a first probability of the interference signal being modulated in QPSK, a second probability of the interference signal being modulated in 16QAM, and a third probability of the interference signal being modulated in 64QAM.

19. The base station of claim 18, wherein the probability information of the modulation scheme for the interference signal further comprises the number of possible modulation schemes of the interference signal and an index of the probability value of the modulation scheme for the interference signal.

20. The base station of claim 16, wherein the probability information is used to perform a error-correcting coding by a terminal.