Frequency hopping pattern indication method and apparatus
A frequency hopping pattern indication method and an apparatus are provided to reduce interference between users. In the method, a network device may indicate a frequency hopping pattern to a first terminal device which performs communication based on the frequency hopping pattern. The frequency hopping pattern indicates a frequency band occupied when the first terminal device performs communication at a frequency hopping moment. The first terminal device collides with any other terminal device at a maximum of one frequency hopping moment in one period. A first period corresponds to more than two frequency hopping moments and more than two frequency bands.
1 . A communication method applied to a first apparatus, the communication method comprising:
obtaining first indication information, wherein the first indication information indicates a frequency hopping pattern;
performing, by the first apparatus, communication based on the frequency hopping pattern, wherein:
the frequency hopping pattern indicates a frequency band occupied when the first apparatus performs communication at a frequency hopping moment;
the first apparatus collides with a second apparatus at a maximum of one frequency hopping moment in one period, the period corresponding to more than two frequency hopping moments and more than two frequency bands;
performing, at a first frequency hopping moment, communication by using a first frequency band that corresponds to the first frequency hopping moment and that is included in the frequency hopping pattern;
where in Euclidean space, each frequency hopping moment corresponds to a parallel line cluster, each parallel line cluster comprising a plurality of line segments arranged parallel to one another, a first frequency band corresponds to a first line segment of the plurality of line segments, the first line segment comprises a first point and a second point, the first apparatus corresponds to the first point in the Euclidean space and the second apparatus corresponds to the second point in the Euclidean space.
2 . The method according to claim 1 , wherein the first indication information comprises one or more of:
identification information of the frequency hopping pattern; or
the frequency hopping pattern.
3 . The method according to claim 1 , wherein the frequency hopping pattern comprises a signature sequence.
4 . The method according to claim 3 , wherein a frequency band granularity of the signature sequence is of a resource block level or a resource element level.
5 . The method according to claim 2 , wherein the first apparatus is at a terminal side and the first indication information is from a third apparatus at a network side.
6 . A first apparatus, comprising:
a memory; and
at least one processor coupled to the memory, the memory storing a computer program instructions that, when executed by the at least one processor, causes the first apparatus to:
receive from a network device, second information that comprises a first parameter and a second parameter;
obtain first indication information indicating a frequency hopping pattern;
perform communication based on the obtained frequency hopping pattern, wherein:
the frequency hopping pattern indicates a frequency band occupied when the first apparatus performs communication at a frequency hopping moment;
the first apparatus collides with a second apparatus at a maximum of one frequency hopping moment in one period, the period corresponding to more than two frequency hopping moments and more than two frequency bands; and
perform, at a first frequency hopping moment, communication by using a first frequency band that corresponds to the first frequency hopping moment and that is included in the frequency hopping pattern;
where in Euclidean space, each frequency hopping moment corresponds to a parallel line cluster, each parallel line cluster comprising a plurality of line segments arranged parallel to one another, a first frequency band corresponds to a first line segment of the plurality of line segments, the first line segment comprises a first point and a second point, the first apparatus corresponds to the first point in the Euclidean space and the second apparatus corresponds to the second point in the Euclidean space.
7 . The first apparatus according to claim 6 , wherein the first indication information comprises one or more of:
identification information of the frequency hopping pattern; or
the frequency hopping pattern.
8 . The first apparatus according to claim 6 , wherein the frequency hopping pattern comprises a signature sequence.
9 . The first apparatus according to claim 8 , wherein a frequency band granularity of the signature sequence is of a resource block level or a resource element level.
10 . The first apparatus according to claim 6 , wherein the first apparatus is at a terminal side and the first indication information is from a third apparatus at a network side.
11 . A non-transitory computer-readable storage medium comprising a computer program, that, when the computer program is run on a computer, causes the computer to:
receive from a network device, second indication information that comprises a first parameter and a second parameter;
generate a frequency hopping pattern based on the first parameter and the second parameter;
perform communication based on the frequency hopping pattern, where the frequency hopping pattern indicates a frequency band occupied when the computer performs communication at a frequency hopping moment, the computer collides with a second apparatus at a maximum of one frequency hopping moment in one period, and the period corresponds to more than two frequency hopping moments and more than two frequency bands; and
perform, at a first frequency hopping moment, communication by using a first frequency band that corresponds to the first frequency hopping moment and that is included in the frequency hopping pattern;
where in Euclidean space, each frequency hopping moment corresponds to a parallel line cluster, each parallel line cluster comprising a plurality of line segments arranged parallel to one another, a first frequency band corresponds to a first line segment of the plurality of line segments, the first line segment comprises a first point and a second point, the first apparatus corresponds to the first point in the Euclidean space and the second apparatus corresponds to the second point in the Euclidean space.
12 . The non-transitory computer-readable storage medium according to claim 11 , wherein the first indication information comprises one or more of:
identification information of the frequency hopping pattern; or
the frequency hopping pattern.
13 . The non-transitory computer-readable storage medium according to claim 11 , wherein the frequency hopping pattern comprises a signature sequence.
14 . The non-transitory computer-readable storage medium according to claim 13 , wherein a frequency band granularity of the signature sequence is of a resource block level or of a resource element level.
15 . The non-transitory computer-readable storage medium according to claim 11 , wherein a granularity of the frequency hopping pattern in time domain is one of:
one or more orthogonal frequency-division multiplexing (OFDM) symbols, or one or more slots.