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US 11,888,616 B2Granted
Uplink non-orthogonal multiple access transmission scheme
AssigneeApple Inc.
InventorsGang Xiong, Yongjun Kwak, Sergey Sosnin, Hwan-Joon Kwon
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Abstract
Embodiments of the present disclosure describe methods, apparatuses, storage media, and systems for uplink non-orthogonal multiple access transmission schemes employed by transmit circuitry. Other embodiments may be described and claimed.
Claims16
A user equipment (UE) comprising:
- a plurality of circuit components to perform initial processing operations on data to be transmitted in an uplink (UL) data transmission from the UE to a base station, wherein the plurality of circuit components include:
- a scrambler configured to generate a scrambled sequence based on a scrambling sequence, wherein the scrambling sequence includes a pseudo noise (PN) modulated sequence that is generated based on a PN sequence, wherein the PN sequence is initialized based on a UE identifier and a constant Δ, wherein the constant Δ is predefined or configured based on a minimum system information (MSI) or configured based on a remaining minimum system information (RMSI);
- a modulating circuitry coupled to the scrambler to receive the scrambled sequence, and configured to generate modulated symbols based on the scrambled sequence;
- a spreader coupled to the modulating circuitry and configured to spread the modulated symbols to generate spread modulated symbols;
- and
- an interleaver, coupled to the spreader to receive the spread modulated symbols, and configured to generate an interleaved sequence based on the spread modulated symbols.
3 more elements
A user equipment (UE) comprising:
- a plurality of circuit components to perform initial processing operations on data to be transmitted in an uplink (UL) data transmission from the UE to a base station, wherein the plurality of circuit components include:
- an interleaver configured to generate an interleaved sequence;
- a modulator coupled to the interleaver to receive the interleaved sequence, and configured to generate modulated symbols based on the interleaved sequence;
- and
- a spreader coupled to the modulator to receive the modulated symbols, and configured to apply a block-wised orthogonal cover code to the modulated symbols, wherein the modulated symbols are given by d(0), . . . , d(Msym−1), where Msym is a number of the modulated symbols, and the spreader is to output
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- where k is a subcarrier index, l is a symbol index, Msc is a number of subcarriers for data transmission, NSF is a spreading factor, and wn (k) is a block-wised spreading sequence.
42 more elements
A method, comprising:
- receiving data to be transmitted in an uplink (UL) data transmission from a user equipment (UE) to a base station;
- generating, by a scrambler, a scrambled sequence for the received data based on a scrambling sequence, wherein the scrambling sequence includes a pseudo noise (PN) modulated sequence that is generated based on a PN sequence, wherein the PN sequence is initialized based on a UE identifier and a constant A, wherein the constant A is predefined or configured based on a minimum system information (MSI) or configured based on a remaining minimum system information (RMSI);
- generating, by a modulating circuitry, modulated symbols based on the scrambled sequence;
- spreading, by a spreader, the modulated symbols to generate spread modulated symbols;
- and
- generating, by an interleaver, an interleaved sequence based on the spread modulated symbols.
3 more elements
Dependencies are inferred from the claim text.