Signal processing method and apparatus

A signal processing method, comprising:

• obtaining, by a communications device, a reference signal of a physical channel, wherein a reference signal sequence corresponding to the reference signal is a gold sequence generated in accordance with a first m-sequence and a second m-sequence;
• and
• obtaining a physical cell identifier and first timing information in accordance with the reference signal sequence, wherein the first timing information comprises at least a first part of a synchronization signal block time index;
• and
• wherein a cyclic shift value m0 of the first m-sequence meets:
• m0=((NcellID+a*SS_block_idx)*b)mod c;
• or
• m0=(b*NcellID+d*SS_block_idx)mod c, where
• wherein NcellID represents an identifier corresponding to the physical cell identifier, SS_block_idx represents the synchronization signal block time index, a, b, c, and d each are a non-zero integer, and a, b, c, and d meet at least one of the following constraint conditions:
• (d*SS_block_idxmax)mod c≤c−b*Ncell,maxID;
• dmod c≤└c/SS_block_idxmax┘, where
• wherein d=a*b, SS_block_idxmax is a maximum value in SS_block_idx, Ncell,maxID is a maximum value in NcellID, mod represents a modulo operation, and └ ┘ represents a rounding down operation.

A communications apparatus, comprising:

• a processor;
• and
• a non-transitory computer-readable storage medium storing a program to be executed by the processor, the program including instructions for:
• generating a reference signal sequence of a physical channel in accordance with a first m-sequence and a second m-sequence, wherein the reference signal sequence is a gold sequence, the reference signal sequence is related to a physical cell identifier and first timing information, and the first timing information comprises at least a first part of a synchronization signal block time index;
• modulating the generated reference signal sequence;
• and
• in response to modulating the generated reference signal sequence, mapping a modulated reference signal sequence to N subcarriers to obtain a reference signal, wherein N is a positive integer greater than or equal to 1;
• and
• wherein a cyclic shift value m0 of the first m-sequence meets:
• m0=((NcellID+a*SS_block_idx)*b)mod c;
• or
• m0=(b*NcellID+d*SS_block_idx)mod c, where
• wherein NcellID represents an identifier corresponding to the physical cell identifier, SS_block_idx represents the synchronization signal block time index, a, b, c, and d each are a non-zero integer, and a, b, c, and d meet at least one of the following constraint conditions:
• (d*SS_block_idxmax)mod c≤c−b*Ncell,maxID;
• dmod c≤└c/SS_block_idxmax┘, where
• wherein d=a*b, SS_block_idxmax is a maximum value in SS_block_idx, Ncell,maxID is a maximum value in NcellID, mod represents a modulo operation, and └ ┘ represents a rounding down operation.

A communications apparatus, comprising:

• a processor;
• a receiver, configured to obtain a reference signal of a physical channel, wherein a reference signal sequence corresponding to the reference signal is a gold sequence generated in accordance with a first m-sequence and a second m-sequence;
• and
• a non-transitory computer-readable storage medium storing a program to be executed by the processor, the program including instructions for obtaining a physical cell identifier and first timing information in accordance with the reference signal sequence, wherein the first timing information comprises at least a first part of a synchronization signal block time index;
• and
• wherein a cyclic shift value m0 of the first m-sequence meets:
• m0=((NcellID+a*SS_block_idx)*b)mod c;
• or
• m0=(b*NcellID+d*SS_block_idx)mod c, where
• wherein NcellID represents an identifier corresponding to the physical cell identifier, SS_block_idx represents the synchronization signal block time index, a, b, c, and d each are a non-zero integer, and a, b, c, and d meet at least one of the following constraint conditions:
• (d*SS_block_idxmax)mod c≤c−b*Ncell,maxID;
• dmod c≤└c/SS_block_idxmax┘, where
• wherein d=a*b, SS_block_idxmax is a maximum value in SS_block_idx, Ncell,maxID is a maximum value in NcellID, mod represents a modulo operation, and └ ┘ represents a rounding down operation.