US-20260129579-A1 - SMALL DATA TRANSMISSION WITH LOW-POWER WAKE-UP SIGNAL

US20260129579A1US 20260129579 A1US20260129579 A1US 20260129579A1US-20260129579-A1

Abstract

Example embodiments of the present disclosure are directed to mall data transmission (SDT) with low-power wake-up signal (LP-WUS). A method comprises disabling, during monitoring a low power wake up signal from a second apparatus, evaluation of a signal quality threshold for a small data transmission, SDT to the second apparatus; in response to exiting the monitoring of the low power wake up signal, enabling one or more measurements on a reference signal from the second apparatus; evaluating a reference signal quality of the reference signal based on the one or more measurements and a signal quality threshold; and based on that the reference signal quality meets a condition associated with the signal quality threshold, initiating the SDT to the second apparatus.

Inventors

Jussi-Pekka Koskinen
Jorma Johannes Kaikkonen
Jani-Pekka Kainulainen

Assignees

NOKIA TECHNOLOGIES OY

Dates

Publication Date: 20260507
Application Date: 20241107

Claims (15)

1 . A first apparatus comprising: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the first apparatus at least to: disable, during monitoring a low power wake up signal from a second apparatus, evaluation of a signal quality threshold for a small data transmission, SDT to the second apparatus; in response to exiting the monitoring of the low power wake up signal, enable one or more measurements on a reference signal from the second apparatus; evaluate a reference signal quality of the reference signal based on the one or more measurements and a signal quality threshold; and based on that the reference signal quality meets a condition associated with the signal quality threshold, initiate the SDT to the second apparatus
2 . The first apparatus of claim 1 , wherein the first apparatus is caused to: upon exiting the monitoring of the low power wake up signal, perform the one or more measurements by a main receiver of the first apparatus.
3 . The first apparatus of claim 2 , wherein the first apparatus is caused to: in accordance with a determination that a criterion associated with a low power receiver of the first apparatus is met, perform the one or more measurements by the main receiver.
4 . The first apparatus of claim 3 , wherein the first apparatus is caused to: in accordance with a determination that a reference signal measurement performed by the low power receiver does not meet a measurement requirement, perform the one or more measurements by the main receiver.
5 . The first apparatus of claim 4 , wherein the measurement requirement comprises at least one of: a signal quality measured by the low power receiver is below a threshold, an accuracy of the reference signal measurement by the low power receiver is below an accuracy threshold, or a time period of the reference signal measurement performed by the low power receiver is equal to or longer than an evaluation time period.
6 . The first apparatus of claim 3 , wherein the first apparatus is caused to: in accordance with a determination that a type of the low power receiver is a predetermined receiver type or a further reference signal measured by the low power receiver is based on a low power synchronization signal, perform the one or more measurements by the main receiver.
7 . The first apparatus of claim 1 , wherein the first apparatus is caused to: perform the one or more measurement by a low power receiver of the first apparatus, wherein the reference signal is based on a synchronization signal.
8 . The first apparatus of claim 7 , wherein the first apparatus is caused to: in accordance with a determination that at least one evaluation period has passed since the first apparatus enters a non-connected state, evaluate the reference signal quality based on the one or more measurements and the signal quality threshold.
9 . The first apparatus of claim 7 , wherein the one or more measurements are performed in a non-connected state of the first apparatus, and the first apparatus is caused to: in accordance with a determination that time periods of the one or more measurements time periods are equal to or longer than an evaluation time period, evaluate the reference signal quality based on the one or more measurements and the signal quality threshold.
10 . The first apparatus of claim 7 , wherein a predetermined threshold offset is absent in requirement information for the first apparatus, and the first apparatus is caused to: determine a threshold offset autonomously; and determine the signal quality threshold by applying the determined threshold offset to a reference threshold for a reference signal measurement.
11 . The first apparatus of claim 7 , wherein the first apparatus is further caused to: determine the signal quality threshold based on a threshold offset and a reference threshold for a reference signal measurement.
12 . The first apparatus of claim 1 , wherein the first apparatus is further caused to: receive, from the second apparatus, configuration information indicating separate signal quality thresholds for different types of SDT; and determine the signal quality threshold based on the configuration information and a type of the SDT.
13 . A method comprising: disabling, during monitoring a low power wake up signal from a second apparatus, evaluation of a signal quality threshold for a small data transmission, SDT to the second apparatus. in response to exiting the monitoring of the low power wake up signal, enabling one or more measurements on a reference signal from the second apparatus. evaluating a reference signal quality of the reference signal based on the one or more measurements and a signal quality threshold. based on that the reference signal quality meets a condition associated with the signal quality threshold, initiating the SDT to the second apparatus
14 . A first apparatus comprising: means for disabling, during monitoring a low power wake up signal from a second apparatus, evaluation of a signal quality threshold for a small data transmission, SDT to the second apparatus; means for in response to exiting the monitoring of the low power wake up signal, enabling one or more measurements on a reference signal from the second apparatus; means for evaluating a reference signal quality of the reference signal based on the one or more measurements and a signal quality threshold; and means for based on that the reference signal quality meets a condition associated with the signal quality threshold, initiating the SDT to the second apparatus.
15 . A computer readable medium comprising instructions stored thereon for causing an apparatus at least to perform the method of claim 13 .

Description

FIELD Various example embodiments of the present disclosure generally relate to the field of telecommunication and in particular, to methods, devices, apparatuses and computer readable storage medium for small data transmission (SDT) with low-power wake-up signal (LP-WUS). BACKGROUND The study of LP-WUS and low power wake-up receiver (LP-WUR, also shorted as LR) in 5G new radio (NR) may enable more power efficient operation on user equipment (UE) and more optimal resource allocation for network. The UE can be in a sleep mode or even powered off for power saving and be activated only upon the reception of the LP-WUS from the network. Low-power synchronization signal (LP-SS) can be used to enable the LP-WUR to maintain synchronization to the cell. SUMMARY In a first aspect of the present disclosure, there is provided a first apparatus. The first apparatus comprises at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the first apparatus at least to: perform, during monitoring a low power wake up signal from a second apparatus, one or more measurements on a reference signal from the second apparatus, wherein the reference signal is based on a synchronization signal; evaluate a reference signal quality of the reference signal based on the one or more measurements and a first signal quality threshold; and at least based on that the reference signal quality meets a condition associated with the first signal quality threshold, initiate a small data transmission, SDT, to the second apparatus. In a second aspect of the present disclosure, there is provided a second apparatus. The second apparatus comprises at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the second apparatus at least to: transmit, to a first apparatus, a reference signal that is based on a synchronization signal; and receive, from the first apparatus, a small data transmission, SDT, wherein the SDT is initiated at least based on that a reference signal quality obtained from one or more measurement on the reference signal meets a condition associated with a first quality threshold. In a third aspect of the present disclosure, there is provided a method. The method comprises: performing, during monitoring a low power wake up signal from a second apparatus, one or more measurements on a reference signal from the second apparatus, wherein the reference signal is based on a synchronization signal; evaluating a reference signal quality of the reference signal based on the one or more measurements and a first signal quality threshold; and at least based on that the reference signal quality meets a condition associated with the first signal quality threshold, initiate a small data transmission, SDT, to the second apparatus. In a fourth aspect of the present disclosure, there is provided a method. The method comprises: transmitting, to a first apparatus, a reference signal that is based on a synchronization signal; and receiving, from the first apparatus, a small data transmission, SDT, wherein the SDT is initiated at least based on that a reference signal quality obtained from one or more measurement on the reference signal meets a condition associated with a first quality threshold. In a fifth aspect of the present disclosure, there is provided a first apparatus. The first apparatus comprises means for performing, during monitoring a low power wake up signal from a second apparatus, one or more measurements on a reference signal from the second apparatus, wherein the reference signal is based on a synchronization signal; means for evaluating a reference signal quality of the reference signal based on the one or more measurements and a first signal quality threshold; and at least based on that the reference signal quality meets a condition associated with the first signal quality threshold, initiate a small data transmission, SDT, to the second apparatus. In a sixth aspect of the present disclosure, there is provided a second apparatus. The second apparatus comprises means for transmitting, to a first apparatus, a reference signal that is based on a synchronization signal; and means for receiving, from the first apparatus, a small data transmission, SDT, wherein the SDT is initiated at least based on that a reference signal quality obtained from one or more measurement on the reference signal meets a condition associated with a first quality threshold. In a seventh aspect of the present disclosure, there is provided a computer readable medium. The computer readable medium comprises instructions stored thereon for causing an apparatus to perform at least the method according to the third aspect. In an eighth aspect of the present disclosure, there is provided a computer readable medium. The computer readable medium comprises instructions stored thereon for causing an apparatus to perform at least the method acc