Method and device for providing remote interference management reference signal, and storage medium

1 . An electronic device in a wireless communication system, the electronic device comprising:

communication circuitry;

memory, comprising one or more storage media, storing instructions; and

at least one processor communicatively coupled to the communication circuitry and the memory,

wherein the instructions, when executed by the at least one processor individually or collectively, cause the electronic device to:

identify a difference between a carrier frequency for communication with a terminal and a reference point configured for a remote interference management (RIM) reference signal (RS),

identify a first quotient and a remainder obtained by dividing the difference by a subcarrier spacing,

rotate a phase of at least one subcarrier in a first orthogonal frequency-division multiplexing (OFDM) symbol comprising at least part of the RIM RS, based on at least one of a cyclic prefix (CP) length of a second OFDM symbol comprising at least different part of the RIM RS, the carrier frequency, or the remainder,

rotate a phase of at least one subcarrier in the second OFDM symbol, based on at least one of the carrier frequency or the remainder, and

transmit the RIM RS comprising the first OFDM symbol and the second OFDM symbol via the communication circuitry.

2 . The electronic device of claim 1 , wherein the instructions, when executed by the at least one processor individually or collectively, further cause the electronic device to:

rotate the phase of the at least one subcarrier in the first OFDM symbol, at least partly based on a difference between the carrier frequency and the remainder.

3 . The electronic device of claim 1 , wherein the instructions, when executed by the at least one processor individually or collectively, further cause the electronic device to:

rotate the phase of the at least one subcarrier in the first OFDM symbol, at least partly based on the CP length of the second OFDM symbol and a difference between the carrier frequency and the remainder.

4 . The electronic device of claim 1 , wherein the instructions, when executed by the at least one processor individually or collectively, further cause the electronic device to:

firstly rotate the phase of the at least one subcarrier in the first OFDM symbol, based on at least one of the CP length of the second OFDM symbol, the carrier frequency, or the remainder, and

secondly rotate the phase of the at least one subcarrier in the first OFDM symbol, based on at least one of the CP length of the second OFDM symbol or a subcarrier index.

5 . The electronic device of claim 1 , wherein the instructions, when executed by the at least one processor individually or collectively, further cause the electronic device to;

rotate the phase of the at least one subcarrier in the second OFDM symbol, at least partly based on a difference between the carrier frequency and the remainder.

6 . The electronic device of claim 1 , wherein the instructions, when executed by the at least one processor individually or collectively, further cause the electronic device to:

rotate the phase of the at least one subcarrier in the second OFDM symbol, at least partly based on a net OFDM symbol length and a difference between the carrier frequency and the remainder.

7 . The electronic device of claim 1 , wherein the instructions, when executed by the at least one processor individually or collectively, further cause the electronic device to:

identify a second quotient obtained by dividing a difference between the carrier frequency and the remainder by a granularity of a digital mixer,

calculate a phase sum, based on at least one of the second quotient or a subcarrier index,

identify a complex number corresponding to the phase sum, and

rotate the phase of the at least one subcarrier in the first OFDM symbol, based on the complex number.

8 . The electronic device of claim 7 , wherein the instructions, when executed by the at least one processor individually or collectively, further cause the electronic device to:

identify the complex number corresponding to the phase sum, at least partly based on a cosine and sine table or a Taylor expansion.

9 . The electronic device of claim 7 , wherein the instructions, when executed by the at least one processor individually or collectively, further cause the electronic device to;

multiply the complex number by a quadrature phase shift keying (QPSK) symbol of the RIM RS.

10 . The electronic device of claim 7 , wherein the instructions, when executed by the at least one processor individually or collectively, further cause the electronic device to:

identify a second quotient obtained by dividing a difference between the carrier frequency and the remainder by a granularity of a digital mixer,

calculate a phase sum, based on at least one of the second quotient or a subcarrier index,

identify a complex number corresponding to the phase sum, and

rotate the phase of the at least one subcarrier in the second OFDM symbol, based on the complex number.

11 . A method for providing a remote interference management (RIM) reference signal (RS) by an electronic device in a wireless communication system, the method comprising:

identifying, by at least one processor of the electronic device, a difference between a carrier frequency for communication with a terminal and a reference point configured for a RIM RS;

identifying, by the at least one processor, a first quotient and a remainder obtained by dividing the difference by a subcarrier spacing;

rotating, by the at least one processor, a phase of at least one subcarrier in a first orthogonal frequency-division multiplexing (OFDM) symbol comprising at least part of the RIM RS, based on at least one of a cyclic prefix (CP) length of a second OFDM symbol comprising at least different part of the RIM RS, the carrier frequency, or the remainder;

rotating, by the at least one processor, a phase of at least one subcarrier in the second OFDM symbol, based on at least one of the carrier frequency or the remainder; and

transmitting, by the at least one processor via communication circuitry of the electronic device, the RIM RS comprising the first OFDM symbol and the second OFDM symbol.

12 . The method of claim 11 , wherein the rotating of the phase of the at least one subcarrier in the first OFDM symbol comprises:

firstly rotating the phase of the at least one subcarrier in the first OFDM symbol, based on at least one of the CP length of the second OFDM symbol, the carrier frequency, or the remainder; and

secondly rotating the phase of the at least one subcarrier in the first OFDM symbol, based on at least one of the CP length of the second OFDM symbol or a subcarrier index.

13 . The method of claim 11 , wherein the rotating of the phase of the at least one subcarrier in the first OFDM symbol comprises:

identifying a second quotient obtained by dividing a difference between the carrier frequency and the remainder by a granularity of a digital mixer;

calculating a phase sum, based on at least one of the second quotient or a subcarrier index;

identifying a complex number corresponding to the phase sum; and

rotating the phase of the at least one subcarrier in the first OFDM symbol, based on the complex number.

14 . The method of claim 13 , wherein the rotating of the phase of the at least one subcarrier in the first OFDM symbol, based on the complex number comprises multiplying the complex number by a quadrature phase shift keying (QPSK) symbol of the RIM RS.

15 . The method of claim 13 , wherein the rotating of the phase of the at least one subcarrier in the second OFDM symbol comprises:

identifying a second quotient obtained by dividing a difference between the carrier frequency and the remainder by a granularity of a digital mixer;

calculating a phase sum, based on at least one of the second quotient or a subcarrier index;

identifying a complex number corresponding to the phase sum; and

rotating the phase of the at least one subcarrier in the second OFDM symbol, based on the complex number.

16 . A non-transitory computer-readable storage medium for storing instructions which, when executed by at least one processor of an electronic device, control the electronic device to perform:

identifying, by at least one processor of the electronic device, a difference between a carrier frequency for communication with a terminal and a reference point configured for a RIM RS;

identifying, by the at least one processor, a first quotient and a remainder obtained by dividing the difference by a subcarrier spacing;

rotating, by the at least one processor, a phase of at least one subcarrier in a first orthogonal frequency-division multiplexing (OFDM) symbol comprising at least part of the RIM RS, based on at least one of a cyclic prefix (CP) length of a second OFDM symbol comprising at least different part of the RIM RS, the carrier frequency, or the remainder;

rotating, by the at least one processor, a phase of at least one subcarrier in the second OFDM symbol, based on at least one of the carrier frequency or the remainder; and

transmitting, by the at least one processor via communication circuitry of the electronic device, the RIM RS comprising the first OFDM symbol and the second OFDM symbol.

17 . The non-transitory computer-readable storage medium of claim 16 , wherein the rotating of the phase of the at least one subcarrier in the first OFDM symbol comprises:

firstly rotating the phase of the at least one subcarrier in the first OFDM symbol, based on at least one of the CP length of the second OFDM symbol, the carrier frequency, or the remainder; and

secondly rotating the phase of the at least one subcarrier in the first OFDM symbol, based on at least one of the CP length of the second OFDM symbol or a subcarrier index.

18 . The non-transitory computer-readable storage medium of claim 16 , wherein the rotating of the phase of the at least one subcarrier in the first OFDM symbol comprises:

identifying a second quotient obtained by dividing a difference between the carrier frequency and the remainder by a granularity of a digital mixer;

calculating a phase sum, based on at least one of the second quotient or a subcarrier index;

identifying a complex number corresponding to the phase sum; and

rotating the phase of the at least one subcarrier in the first OFDM symbol, based on the complex number.

19 . The non-transitory computer-readable storage medium of claim 18 , wherein the rotating of the phase of the at least one subcarrier in the first OFDM symbol, based on the complex number comprises multiplying the complex number by a quadrature phase shift keying (QPSK) symbol of the RIM RS.

20 . The non-transitory computer-readable storage medium of claim 18 , wherein the rotating of the phase of the at least one subcarrier in the second OFDM symbol comprises:

identifying a second quotient obtained by dividing a difference between the carrier frequency and the remainder by a granularity of a digital mixer;

calculating a phase sum, based on at least one of the second quotient or a subcarrier index;

identifying a complex number corresponding to the phase sum; and

rotating the phase of the at least one subcarrier in the second OFDM symbol, based on the complex number.