Discontinuous reception method and apparatus

1 . A communication method, comprising:

obtaining first discontinuous reception (DRX) configuration information;

obtaining a first cycle duration T1 of a first DRX cycle, a quantity N1 of first on-duration periods in the first DRX cycle, and a duration of one first on-duration period of the N1 first on-duration periods based on the first DRX configuration information, wherein T1>0 and N1>0 and T1 and N1 are positive integers;

obtaining, based on the first DRX configuration information, a first start offset A1 and a first slot offset that correspond to the first DRX cycle, wherein A1≥0 and A1 is an integer; and

obtaining start times of one or more first on-duration periods of the N1 first on-duration periods based on the first cycle duration T1, the quantity N1 of first on-duration periods, the first start offset A1, and the first slot offset;

wherein a start subframe of an i th first on-duration period of the N1 first on-duration periods in the first DRX cycle satisfies:

((SFN1×10)+SF1)mod (T1)=(A1+└(i−1)*T1/N1┘)mod (T1), wherein

SF1 represents a number of the start subframe, SFN1 represents a number of a system frame in which the start subframe is located, SF1 and SFN1 are integers greater than or equal to 0, 1≤i≤N1, mod represents a modulo operation, and └ ┘ represents rounding down;

a start time of the i th first on-duration period is obtained based on the start subframe and the first slot offset; and

monitoring a physical downlink control channel (PDCCH) in the one or more first on-duration periods based on the first cycle duration T1, the quantity N1 of first on-duration periods, the first start offset A1 and the first slot offset, the start times of the one or more first on-duration periods, and the duration of the one first on-duration period.

2 . The method according to claim 1 , wherein the first cycle duration T1 is 25 milliseconds (ms), 50 ms, or 100 ms.

3 . The method according to claim 1 , wherein N1 is an integer multiple of 3.

4 . An apparatus, comprising:

one or more processors to execute instructions stored in a non-transitory memory that when executed cause the apparatus to:

obtain first discontinuous reception (DRX) configuration information;

obtain a first cycle duration T1 of a first DRX cycle, a quantity N1 of first on-duration periods in the first DRX cycle, and a duration of one first on-duration period of the N1 first on-duration periods based on the first DRX configuration information, wherein T1>0 and N1>0 and T1 and N1 are positive integers;

obtain, based on the first DRX configuration information, a first start offset A1 and a first slot offset that correspond to the first DRX cycle, wherein A1≥0 and A1 is an integer; and

obtain start times of one or more first on-duration periods of the N1 first on-duration periods based on the first cycle duration T1, the quantity N1 of first on-duration periods, the first start offset A1, and the first slot offset;

wherein a start subframe of an i th first on-duration period of the N1 first on-duration periods in the first DRX cycle satisfies:

((SFN1×10)+SF1) mod (T1)=(A1+(i−1)*└T1/N1┘)mod (T1), wherein

SF1 represents a number of the start subframe, SFN1 represents a number of a system frame in which the start subframe is located, SF1 and SFN1 are integers greater than or equal to 0, 1≤i≤N1, mod represents a modulo operation, and └ ┘ represents rounding down;

a start time of the i th first on-duration period is obtained based on the start subframe and the first slot offset; and

monitor a physical downlink control channel (PDCCH) in the one or more first on-duration periods based on the first cycle duration T1, the quantity N1 of first on-duration periods, the first start offset A1 and the first slot offset, the start times of the one or more first on-duration periods, and the duration of the one first on-duration period.

5 . The apparatus according to claim 4 , wherein the first cycle duration T1 is 25 milliseconds (ms), 50 ms, or 100 ms.

6 . The apparatus according to claim 4 , wherein N1 is an integer multiple of 3.

7 . A non-transitory computer readable medium storing instructions that are executable by a computer, the non-transitory computer readable medium is applied to a first communication apparatus, and the instructions comprise instructions for:

obtaining first discontinuous reception (DRX) configuration information;

obtaining a first cycle duration T1 of a first DRX cycle, a quantity N1 of first on-duration periods in the first DRX cycle, and a duration of one first on-duration period of the N1 first on-duration periods based on the first DRX configuration information, wherein T1>0 and N1>0 and T1 and N1 are positive integers;

obtaining, based on the first DRX configuration information, a first start offset A1 and a first slot offset that correspond to the first DRX cycle, wherein A1≥0 and A1 is an integer; and

obtaining start times of one or more first on-duration periods of the N1 first on-duration periods based on the first cycle duration T1, the quantity N1 of first on-duration periods, the first start offset A1, and the first slot offset;

wherein a start subframe of an i th first on-duration period of the N1 first on-duration periods in the first DRX cycle satisfies:

((SFN1×10)+SF1)mod (T1)=(A1+└(i−1)*T1/N1┘) mod (T1), wherein

SF1 represents a number of the start subframe, SFN1 represents a number of a system frame in which the start subframe is located, SF1 and SFN1 are integers greater than or equal to 0, 1≤i≤N1, mod represents a modulo operation, and └ ┘ represents rounding down;

a start time of the i th first on-duration period is obtained based on the start subframe and the first slot offset; and

monitoring a physical downlink control channel (PDCCH) in one or more first on-duration periods of the first on-duration periods in the first DRX cycle based on the first cycle duration T1, the quantity N1 of first on-duration periods, the first start offset A1 and the first slot offset, the start times of the one or more first on-duration periods, and the duration of the one first on-duration period.

8 . The non-transitory computer readable medium according to claim 7 , wherein the first cycle duration T1 is 25 milliseconds (ms), 50 ms, or 100 ms.

9 . The non-transitory computer readable medium according to claim 7 , wherein N1 is an integer multiple of 3.