US 12,739,802 B2Granted

Enhanced PSFCH resource mapping for standalone sidelink CSI-RS

AssigneeNokia Technologies Oy

InventorsDaniel Medina, Torsten Wildschek, Faranaz Sabouri-Sichani, Takayuki Shimizu, Claude Arzelier

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Abstract

An apparatus comprising: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to: determine a first allocation comprising at least one of: a first time-domain allocation comprising at least one symbol within a slot associated with a first reference signal transmission, or a first frequency-domain allocation comprising at least one subcarrier within a physical resource block associated with the first reference signal transmission, or a first code-domain allocation comprising a sequence associated with the first reference signal transmission, or a first space-domain allocation comprising a beam associated with the first reference signal transmission; and determine a physical sidelink feedback channel transmission resource for a physical sidelink feedback channel transmission in response to the first reference signal transmission at least based on the determined first allocation.

Claims19

Dependent claims

An apparatus comprising:

at least one processor;
and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to:
determine a first allocation comprising at least one of:
a first time-domain allocation comprising at least one symbol within a slot associated with a first reference signal transmission, or
a first frequency-domain allocation comprising at least one subcarrier within a physical resource block associated with the first reference signal transmission, or
a first code-domain allocation comprising a sequence associated with the first reference signal transmission, or
a first space-domain allocation comprising a beam associated with the first reference signal transmission;
and
determine a physical sidelink feedback channel transmission resource for a physical sidelink feedback channel transmission in response to the first reference signal transmission at least based on the determined first allocation,
wherein determining the physical sidelink feedback channel transmission resource comprises determining a physical sidelink feedback channel transmission resource index according to:
(
m
+
n
·
Math
·
M
)
·
Math
·
R
PRB
,
CS
PSFCH
M
×
N
+
(
P
ID
+
M
ID
)
⁢
mod
⁢
R
PRB
,
CS
PSFCH
M
×
N
⁢
or
⁢
(
n
+
m
·
Math
·
N
)
·
Math
·
R
PRB
.
CS
PSFCH
M
×
N
+
(
P
ID
+
M
ID
)
⁢
mod
⁢
R
PRB
,
CS
PSFCH
M
×
N
Wherein
M is a number of possible time-domain allocations within a slot for a reference signal transmission;
N is a number of possible frequency-domain allocations within a physical resource block for the reference signal transmission;
m indicates which of the possible time-domain allocations within a slot is used by the first reference signal transmission;
n indicates which of the possible frequency-domain allocations within a physical resource block is used by the first reference signal transmission;
R
PRB
,
CS
PSFCH
is a number of physical sidelink feedback channel transmission resources available for multiplexing control information in a physical sidelink feedback channel transmission;
PID is a physical layer source identifier;
and
MID is a group member identifier.

102 more elements

A method comprising:

determining a first allocation comprising at least one of:
a first time-domain allocation comprising at least one symbol within a slot associated with a first reference signal transmission, or
a first frequency-domain allocation comprising at least one subcarrier within a physical resource block associated with the first reference signal transmission, or
a first code-domain allocation comprising a sequence associated with the first reference signal transmission, or
a first space-domain allocation comprising a beam associated with the first reference signal transmission;
and
determining a physical sidelink feedback channel transmission resource for a physical sidelink feedback channel transmission in response to the first reference signal transmission at least based on the determined first allocation,
wherein determining the physical sidelink feedback channel transmission resource comprises determining a physical sidelink feedback channel transmission resource index according to:
(
m
+
n
·
Math
·
M
)
·
Math
·
R
PRB
,
CS
PSFCH
M
×
N
+
(
P
ID
+
M
ID
)
⁢
mod
⁢
R
PRB
,
CS
PSFCH
M
×
N
⁢
or
⁢
(
n
+
m
·
Math
·
N
)
·
Math
·
R
PRB
,
CS
PSFCH
M
×
N
+
(
P
ID
+
M
ID
)
⁢
mod
⁢
R
PRB
,
CS
PSFCH
M
×
N
Wherein
M is a number of possible time-domain allocations within a slot for a reference signal transmission;
N is a number of possible frequency-domain allocations within a physical resource block for the reference signal transmission;
m indicates which of the possible time-domain allocations within a slot is used by the first reference signal transmission;
n indicates which of the possible frequency-domain allocations within a physical resource block is used by the first reference signal transmission;
R
PRB
,
CS
PSFCH
is a number of physical sidelink feedback channel transmission resources available for multiplexing control information in a physical sidelink feedback channel transmission;
PID is a physical layer source identifier;
and
MID is a group member identifier.

100 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/357,315Filed 24 Jul 2023
Published: US 2025/0039851 A130 Jan 2025
Granted: 15 Sep 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

H04L 5/0048
Arrangements for allocating sub-channels of the transmission path: allocation of pilot signals, i.e. of signals known to the receiver
H04W 72/0446
Based on the type of the allocated resource: resources in time domain, e.g. slots or frames
H04L 5/0026
Arrangements for dividing the transmission path: division using four or more dimensions, e.g. beam steering or quasi-co-location [QCL]
H04L 5/0028
Arrangements for dividing the transmission path: variable division