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US 11,888,667 B2Granted
Demodulation reference signal for physical broadcast channel in new radio
AssigneeApple Inc.
InventorsGregory Morozov, Dae Won Lee, Alexei Davydov, Seung Hee Han, Yongjun Kwak
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Abstract
A reference signal sequence to modulate the demodulation reference signal for the Physical Broadcast Channel in New Radio standard is disclosed. Formulas are proposed for calculating the initialization value for the RS sequence generator so as to accord with the characteristics of New Radio.
Claims20
An apparatus of a user equipment (UE) comprising a baseband processor configured to:
- generate a demodulation reference signal (DMRS) sequence from a Gold code based on an initialization value, wherein the initialization value is determined based on
- a cell identification (ID) parameter, upon which
- a modulus operation is performed by the baseband processor;
- and
- separately, a mathematical floor operation is performed by the baseband processor;
- and
- at least a portion of a synchronization signal (SS) block index;
- receive a physical broadcast channel (PBCH) DMRS;
- and
- process the PBCH DMRS based on the DMRS sequence.
7 more elements
A method for a user equipment (UE) comprising:
- determining an initialization value based on
- a cell identification (ID) parameter, upon which
- a modulus operation is performed;
- and
- separately, a mathematical floor operation is performed;
- and
- at least a portion of a synchronization signal (SS) block index;
- generating a demodulation reference signal (DMRS) sequence from a Gold code based on the initialization value;
- receiving a physical broadcast channel (PBCH) DMRS from a base station;
- and
- processing the PBCH DMRS based on the DMRS sequence.
8 more elements
An apparatus of a 5G enhanced Node B (gNB) comprising a baseband processor configured to:
- determine an initialization value based on:
- a cell identification (ID) parameter, upon which
- a modulus operation is performed by the baseband processor;
- and
- separately, a mathematicalfloor operation is performed by the baseband processor;
- and
- at least a portion of a synchronization signal (SS) block index;
- generate a physical broadcast channel (PBCH) demodulation reference signal (DMRS) sequence from a Gold code based on the initialization value;
- and
- cause transmission of the PBCH DMRS.
7 more elements
Dependencies are inferred from the claim text.