US 2026/0081731 A1Published application

Unequal modulation phy layer signaling for wifi system

AssigneeInterDigital Patent Holdings, Inc.

InventorsHanqing Lou, Ying Wang, Rui Yang

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Abstract

A first station (STA) may receive a physical protocol data unit (PPDU) including user fields associated with the spatial streams of a plurality of stations (STAs). Each of the user fields may include: an indication of a STA identifier (ID), an indication of a spatial stream index, and an indication of a modulation and coding scheme (MCS) of the respective spatial stream of the respective STA. The first STA may determine, based on the indicated STA IDs one or more user fields intended for the first STA. The first STA may determine, for each of the spatial streams of the first STA, an MCS value based on the indicated MCS in the user field intended for the first STA. The first STA may decode the spatial streams intended for the first STA according to the determined MCS values using one or more resource units (RUs) or multiple resource units (MRUs).

Claims20

Dependent claims

A first station (STA) comprising:

a transceiver;
and
a processor,
wherein the transceiver and processor are configured to:
receive a physical protocol data unit (PPDU) comprising a signal (SIG) field, the SIG field comprising a plurality of user fields associated with a respective plurality of spatial streams of a plurality of stations (STAs), each of the plurality of user fields including:
an indication of a STA identifier (ID) of a respective STA, an indication of a spatial stream of the respective STA, and an indication of a modulation and coding scheme (MCS) of the respective spatial stream of the respective STA;
determine, based on the indicated STA IDs in the plurality of user fields, one or more user fields intended for the first STA, wherein a number of the one or more user fields intended for the first STA corresponds to a number of spatial streams of the first STA;
determine, for each of the spatial streams of the first STA, an MCS value based on the indicated MCS in the user field intended for the first STA for the respective spatial stream according to the spatial stream indication;
and
decode the spatial streams for the first STA according to the determined MCS values using one or more resource units (RUs) or multiple resource units (MRUs).

7 more elements

A method performed by a first station (STA), the method comprising:

receiving a physical protocol data unit (PPDU) comprising a signal (SIG) field, the SIG field comprising a plurality of user fields associated with a respective plurality of spatial streams of a plurality of stations (STAs), each of the plurality of user fields including:
an indication of a STA identifier (ID) of a respective STA, an indication of a spatial stream of the respective STA, and an indication of a modulation and coding scheme (MCS) of the respective spatial stream of the respective STA;
determining, based on the indicated STA IDs in the plurality of user fields, one or more user fields intended for the first STA, wherein a number of the one or more user fields intended for the first STA corresponds to a number of spatial streams of the first STA;
determining, for each of the spatial streams of the first STA, an MCS value based on the indicated MCS in the user field intended for the first STA for the respective spatial stream according to the spatial stream indication;
and
decoding the spatial streams for the first STA according to the determined MCS values using one or more resource units (RUs) or multiple resource units (MRUs).

3 more elements

Dependencies are inferred from the claim text.