Patent ID: 11956107
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. A network access node for a wireless communication system, comprising:
at least one processor; and
one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to cause the network access node to:
receive a signal comprising a random access preamble from a client device, wherein the random access preamble comprises a modulation sequence mapped onto at least one time-frequency resource allocated for a random access preamble, wherein the modulation sequence is based on a first sequence and a second sequence, the first sequence being a sequence from a set of near-orthogonal sequences and the second sequence being a sequence from a set of constant envelope sequences, wherein at least one of the first sequence or the second sequence is a Discrete Fourier Transform (DFT) sequence, a permutation of a DFT sequence, or a cyclic shift of a DFT sequence;
determine the time-frequency resources allocated for a random access preamble; and
detect at least one of the random access preamble and an arrival time of the random access preamble based on the determined time-frequency resources allocated for a random access preamble and the signal.