Title:
USER MULTIPLEXING FOR UPLINK CONTROL INFORMATION
Document Type and Number:
Japanese Patent JP2023130338
Kind Code:
A
Abstract:
To provide methods, systems and devices for wireless communications.SOLUTION: Pre-discrete Fourier transform (DFT) time-domain spreading codes may be applied to UE multiplexing for uplink control information (e.g., over shared resources of an uplink slot). For example, a moderate number of UEs may be multiplexed within the same slot by having each UE spread modulation symbols before DFT-spreading by different spreading code. For orthogonality across UEs, the pre-DFT spreading codes may be selected as orthogonal cover codes (OCCs). The spreading sequences can be generated from a set of any orthogonal sequences or generated from unitary matrices. In some cases, orthogonality in the time domain may be kept as well as a frequency division multiplexed (FDM) structure in the frequency domain. For such a property, a Fourier basis OCC design may be used. In some other examples, a Hadamard matrix based OCC design may be used.SELECTED DRAWING: Figure 3
Inventors:
PARK SEYONG
HUANG YI
WANG RENQIU
SONY AKKARAKARAN
PETER GAHL
TAO RUO
HUANG YI
WANG RENQIU
SONY AKKARAKARAN
PETER GAHL
TAO RUO
Application Number:
JP2023089050A
Publication Date:
September 20, 2023
Filing Date:
May 30, 2023
Export Citation:
Assignee:
QUALCOMM INC
International Classes:
H04L27/26; H04W72/044; H04W72/21
Attorney, Agent or Firm:
Yasuhiko Murayama
Shinpei Kuroda
Shinpei Kuroda
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