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US 12,712,684 B2Granted
Satellite communication method and related communication device
AssigneeHuawei Technologies Co., Ltd.
InventorsChenlei Xu, Hejia Luo, Jianwei Zhou, Xiaolu Wang
Life of this patent
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Abstract
Example satellite communication methods and example related devices are provided. One example satellite communication method includes generating a random access preamble sequence, where the random access preamble sequence includes a cyclic prefix, a sequence part, and a guard interval, the sequence part is obtained by performing frequency domain resource mapping and time-frequency transformation on a frequency domain sequence, and the frequency domain sequence is obtained based on a Zadoff-Chu (ZC) sequence and a mask sequence. The random access preamble sequence can then be output.
Claims18
A satellite communication method, comprising:
- generating a random access preamble sequence, wherein the random access preamble sequence comprises a cyclic prefix, a sequence part, and a guard interval, wherein the sequence part is obtained by performing frequency domain resource mapping and time-frequency transformation on a frequency domain sequence, and the frequency domain sequence is obtained based on a Zadoff-Chu (ZC) sequence and a mask sequence;
- and
- outputting the random access preamble sequence,
- wherein in response to the mask sequence being a sequence common to a cell or satellite beam, generation of the mask sequence is related to at least one parameter of the cell or satellite beam, and the at least one parameter of the cell or satellite beam comprises at least one of an index number of the cell or satellite beam, an index number of a data subcarrier width, an index number of a synchronization signal block, or an index number of a bandwidth part,
- wherein the sequence part comprises at least one subsequence A and at least one subsequence B, the subsequence A comprises at least one first preamble symbol, the subsequence B comprises at least one second preamble symbol, and the at least one first preamble symbol comprised in the subsequence A is different from the at least one second preamble symbol comprised in the subsequence B;
- the subsequence A is obtained by performing frequency domain resource mapping and time-frequency transformation on a frequency domain sequence Za, and the frequency domain sequence Za is obtained based on the ZC sequence and the mask sequence;
- and
- when the cyclic prefix comprises a first cyclic prefix and a second cyclic prefix:
- the at least one subsequence A is located between the first cyclic prefix and the second cyclic prefix, and the at least one subsequence B is located between the second cyclic prefix and the guard interval;
- the at least one subsequence B is located between the first cyclic prefix and the second cyclic prefix, and the at least one subsequence A is located between the second cyclic prefix and the guard interval;
- or
- the at least one subsequence A and the at least one subsequence B alternately occur between the first cyclic prefix and the second cyclic prefix.
9 more elements
A satellite communication apparatus, comprising:
- at least one processor;
- and
- at least one non-transitory memory coupled to the at least one processor and storing computer program instructions for execution by the at least one processor to:
- generate a random access preamble sequence, wherein the random access preamble sequence comprises a cyclic prefix, a sequence part, and a guard interval, the sequence part is obtained by performing frequency domain resource mapping and time-frequency transformation on a frequency domain sequence, and the frequency domain sequence is obtained based on a Zadoff-Chu (ZC) sequence and a mask sequence;
- and
- output the random access preamble sequence,
- wherein in response to the mask sequence being a sequence common to a cell or satellite beam, generation of the mask sequence is related to at least one parameter of the cell or satellite beam, and the at least one parameter of the cell or satellite beam comprises at least one of an index number of the cell or satellite beam, an index number of a data subcarrier width, an index number of a synchronization signal block, or an index number of a bandwidth part,
- wherein the sequence part comprises at least one subsequence A and at least one subsequence B, the subsequence A comprises at least one first preamble symbol, the subsequence B comprises at least one second preamble symbol, and the at least one first preamble symbol comprised in the subsequence A is different from the at least one second preamble symbol comprised in the subsequence B;
- the subsequence A is obtained by performing frequency domain resource mapping and time-frequency transformation on a frequency domain sequence Za, and the frequency domain sequence Za is obtained based on the ZC sequence and the mask sequence;
- and
- when the cyclic prefix comprises a first cyclic prefix and a second cyclic prefix:
- the at least one subsequence A is located between the first cyclic prefix and the second cyclic prefix, and the at least one subsequence B is located between the second cyclic prefix and the guard interval;
- the at least one subsequence B is located between the first cyclic prefix and the second cyclic prefix, and the at least one subsequence A is located between the second cyclic prefix and the guard interval;
- or
- the at least one subsequence A and the at least one subsequence B alternately occur between the first cyclic prefix and the second cyclic prefix.
12 more elements
Dependencies are inferred from the claim text.