Methods, architectures, apparatuses and systems for data-driven channel state information (csi) prediction

Patent metadata

Field	Value
Publication number	US-2025253998-A1
Application number	US-202318856796-A
Country	US
Kind code	A1
Filing date	Apr 14, 2023
Priority date	Apr 15, 2022
Publication date	Aug 7, 2025
Grant date	—

Abstract

Procedures, methods, architectures, apparatuses, systems, devices, and computer program products directed to data-driven channel state information (CSI) prediction in wireless systems are disclosed. In an embodiment, an apparatus may be configured to receive, from a network node, a plurality of reference signals transmitted during a time window; determine, based on a trained artificial intelligence (AI) model, a plurality of channel state information (CSI) associated with the plurality of reference signals; generate a report comprising the plurality of CSI; and/or transmit the report to the network node.

First claim

1 . A method implemented by a wireless transmit/receive unit (WTRU), the method comprising:
receiving, from a network node, configuration information indicating:
a first period of time to receive and measure channel state information (CSI) by the WTRU, and
a size of a second period of time for prediction of CSI by the WTRU, wherein the size of the second period of time is smaller or equal to a maximum size of the second period of time, and wherein the second period of time is after the first period of time;
receiving, during the first period of time from the network node, a plurality of CSI reference signals (CSI-RSs); measuring a plurality of CSI based on the plurality of CSI-RS; determining an updated size of the second period of time, wherein the updated size of the second period of time is based on a measurement performed on at least one CSI-RS of the plurality of CSI-RS received, and wherein the updated size of the second period of time is smaller or equal to the maximum size of the second period of time; and transmitting, to the network node, the updated size of the second period of time and a plurality of predicted CSI for the first period of time, wherein the plurality of predicted CSI is generated using the plurality of CSI.

2 . The method according to claim 1 , comprising:
after an expiry of the first time period of time, repeating periodically:
receiving, during a third period of time from the network node, a second plurality of CSI-RSs;
measuring a second plurality of CSI based on the second plurality of CSI-RS;
determining an updated size of a fourth period of time, wherein the updated size of the fourth period of time is based on a measurement performed on at least one CSI-RS of the second plurality of CSI-RS, and wherein the updated size of the fourth period of time is smaller or equal to the maximum size of the second period of time; and
transmitting, to the network node, the updated size of the fourth period of time and a second plurality of predicted CSI for the second period of time, wherein the second plurality of predicted CSI is generated using the second plurality of CSI.

3 . The method according to claim 1 , wherein the plurality of predicted CSI is transmitted in a single transmission.

4 . The method according to claim 1 , comprising:
transmitting, to the network node, information indicating a completion of a generation of the predicted CSI.

5 . The method according to claim 1 , comprising:
transmitting, to the network node, a request for an uplink grant; receiving, from the network node, an uplink grant; and transmitting, to the network node using the uplink grant, a report comprising the plurality of predicted CSI.

6 . The method according to claim 5 , wherein determining the updated size of the second period of time is further based on the uplink grant.

7 . The method according to claim 1 , comprising:
receiving, from the network node, a request message for obtaining a capability of the WTRU to perform CSI prediction; and transmitting, to the network node, a response message comprising information indicating the maximum size of the second period of time.

8 . The method according to claim 1 , comprising:
determining, for at least one CSI-RS of the plurality of CSI-RS received, a differential between a predicted CSI generated using the at least one CSI-RS and a CSI measurement based on the at least one CSI-RS; and transmitting, to the network node, information indicating the differential.

9 . The method according to claim 1 , wherein the plurality of predicted CSI is generated using a trained CSI prediction artificial intelligence (AI)/machine learning (ML) model.

10 . The method according to claim 9 , wherein the maximum size of the second period of time is based on a performance of the trained CSI prediction AI/ML model.

11 . The method according to claim 9 , further comprising:
transmitting, to the network node, a request for updating and/or retraining the CSI prediction AI/ML model.

12 . A wireless transmit/receive unit (WTRU) comprising circuitry, including a transmitter, a receiver, a processor and memory, the WTRU configured to:
receive, from a network node, configuration information indicating:
a first period of time to receive and measure channel state information (CSI), and
a size of a second period of time for prediction of CSI by the WTRU, wherein the size of the second period of time is smaller or equal to a maximum size of the second period of time, and wherein the second period of time is after the first period of time;
receive, during the first period of time from the network node, a plurality of CSI reference signals (CSI-RSs); measure a plurality of CSI based on the plurality of CSI-RS; determine an updated size of the second period of time, wherein the updated size of the second period of time is based on a measurement performed on at least one CSI-RS of the plurality of CSI-RS, and wherein the updated size of the second period of time is smaller or equal to the maximum size of the second period of time; and transmit, to the network node, the updated size of the second period of time and a plurality of predicted CSI for the first period of time, wherein the predicted CSI are generated using the plurality of CSI.

13 . The WTRU according to claim 12 , configured to:
after an expiry of the first time period of time, periodically repeat the following:
receive, during a third period of time from the network node, a second plurality of CSI-RSs;
measure a second plurality of CSI based on the second plurality of CSI-RS;
determine an updated size of a fourth period of time, wherein the updated size of the fourth period of time is based on a measurement performed on at least one of the CSI-RS of the second plurality of CSI-RS, and wherein the updated size of the fourth period of time is smaller or equal to the maximum size of the second period of time; and
transmit, to the network node, the updated size of the fourth period of time and a second plurality of predicted CSI for the second period of time, wherein the second plurality of predicted CSI is generated using the second plurality of CSI.

14 . The WTRU according to claim 12 , wherein the plurality of predicted CSI is transmitted in a single transmission.

15 . The WTRU according to claim 12 , configured to:
transmit, to the network node, information indicating a completion of a generation of the predicted CSI.

16 . The WTRU according to claim 12 , configured to:
transmit, to the network node, a request for an uplink grant; receive, from the network node, an uplink grant; and transmit, to the network node using the uplink grant, a report comprising the plurality of predicted CSI.

17 . The WTRU according to claim 16 , wherein the determination of the updated size of the second period of time is further based on the uplink grant.

18 . The WTRU according to claim 12 , configured to:
receive, from the network node, a request message for obtaining a capability of the WTRU to perform CSI prediction; and transmit, to the network node, a response message comprising information indicating the maximum size of the second period of time.

19 . The WTRU according to claim 12 , configured to:
determine, for at least one CSI-RS of the plurality of CSI-RS received, a differential between a predicted CSI generated using the at least one CSI-RS and a CSI measurement based on the at least one CSI-RS; and transmit, to the network node, information indicating the differential.

Assignees

• Interdigital Patent Holdings Inc

Inventors

• Katla Satyanarayana
• Tan Ahmet Serdar
• Tooher Patrick
• Lutchoomun Tejaswinee
• Shojaeifard Arman
• Deenoo Yugeswar
• Lee Moon-Il
• Beluri Mihaela
• Hemadeh Ibrahim
• Ibrahim Mohamed Salah
• Malhotra Akshay

Classifications

• H04W72/0446

  Resources in time domain, e.g. slots or frames · CPC title

• H04B7/0626 Primary

  Channel coefficients, e.g. channel state information [CSI] · CPC title

• H04W72/21

  in the uplink direction of a wireless link, i.e. towards the network · CPC title

• H04B17/373

  Predicting channel quality {or other radio frequency [RF]} parameters · CPC title

• H04W72/1268

  of uplink data flows · CPC title