EP-4740353-A1 - METHODS AND APPARATUSES FOR DMRS-FREE SPACE CCA TRANSMISSION AND RECEPTION

Abstract

A method performed by a wireless transmit / receive unit (WTRU) may comprise: receiving a PDSCH associated with a space CCA transmission, wherein the space CCA transmission includes a group of REs, including: a first group of REs; a second group of REs; a third group of REs; and a fourth group of REs; constructing a first space CCA view and a second space CCA view in a receive antenna domain in a space CCA region; and decoding the first group of REs, the second group of REs, and the fourth group of REs in the space CCA transmission.

Inventors

• IBRAHIM, Mohamed Salah
• NARAYANAN THANGARAJ, Yugeswar Deenoo
• TOOHER, PATRICK
• BELURI, MIHAELA
• LEE, MOON IL
• Malhotra, Akshay

Assignees

• InterDigital Patent Holdings, Inc.

Dates

Publication Date

20260513

Application Date

20240708

Claims (18)

1. 1. A method performed by a wireless transmit / receive unit (WTRU) comprising: receiving a physical downlink shared channel (PDSCH) associated with a space canonical correlation analysis (CCA) transmission, wherein the space CCA transmission includes a group of resource elements (REs), including: a first group of REs for carrying data associated with a first layer; a second group of REs for carrying data from the first layer and a second layer, wherein a transmit power difference between the first layer and the second layer is greater than a threshold; a third group of REs for carrying a CCA phase correction reference symbol; and a fourth group of REs for carrying data from the first layer and data from the second layer, wherein the transmit power of the first layer is equal to the transmit power of the second layer; constructing a first space CCA view and a second space CCA view in a receive antenna domain in a space CCA region; and decoding the first group of REs, the second group of REs, and the fourth group of REs in the space CCA transmission.
2. 2. The method of claim 1 , further comprising: receiving configuration information associated with a space CCA transmission.
3. 3. The method of claim 2, wherein the configuration information includes a PDSCH format.
4. 4. The method of claim 2, wherein the configuration information includes a layer specific space CCA region configuration
5. 5. The method of claim 2, wherein the configuration information includes a percentage of overlap between the first layer and the second layer.
6. 6. The method of claim 1 , further comprising: utilizing the third group of REs for a phase correction.
7. 7. The method of claim 1 , wherein the space CCA regions includes the first group of REs, the second group of REs, and the third group of REs
8. 8. The method of claim 1 , wherein the first space CCA view is constructed from a first set of receive antenna elements and the second space CCA view is constructed from a second set of receive antenna elements.
9. 9. The method of claim 8, wherein the first set of receive antenna elements does not overlap with second set of receive antenna elements.
10. 10. A wireless transmit / receive unit (WTRU) comprising: a transceiver; and a processor; wherein the transceiver and processor are configured to: receive a physical downlink shared channel (PDSCH) associated with a space canonical correlation analysis (CCA) transmission, wherein the space CCA transmission includes a group of resource elements (REs), including: a first group of REs for carrying data associated with a first layer; a second group of REs for carrying data from the first layer and a second layer, wherein a transmit power difference between the first layer and the second layer is greater than a threshold; a third group of REs for carrying a CCA phase correction reference symbol; and a fourth group of REs for carrying data from the first layer and data from the second layer, wherein the transmit power of the first layer is equal to the transmit power of the second layer; construct a first space CCA view and a second space CCA view in a receive antenna domain in a space CCA region; and decode the first group of REs, the second group of REs, and the fourth group of REs in the space CCA transmission.
11. 11. The WTRU of claim 10, further comprising: receiving configuration information associated with a space CCA transmission.
12. 12. The WTRU of claim 11 , wherein the configuration information includes a PDSCH format.
13. 13. The WTRU of claim 11, wherein the configuration information includes a layer specific space CCA region configuration
14. 14. The WTRU of claim 11, wherein the configuration information includes a percentage of overlap between the first layer and the second layer.
15. 15. The WTRU of claim 10, further comprising: utilizing the third group of REs for a phase correction.
16. 16. The WTRU of claim 10, wherein the space CCA regions includes the first group of REs, the second group of REs, and the third group of REs
17. 17. The WTRU of claim 10, wherein the first space CCA view is constructed from a first set of receive antenna elements and the second space CCA view is constructed from a second set of receive antenna elements.
18. 18. The WTRU of claim 17, wherein the first set of receive antenna elements does not overlap with second set of receive antenna elements.

Description

METHODS AND APPARATUSES FOR DMRS-FREE SPACE CCA TRANSMISSION AND RECEPTION CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application claims the benefit of U.S. Provisional Application No. 63/525,209, filed July 6, 2023, the contents of which are incorporated herein by reference. BACKGROUND [0002] Machine learning may refer to a type of algorithms that solve a problem based on learning through experience (“data”), without explicitly being programmed (“configuring set of rules”). Machine learning can be considered as a subset of Al. Different machine learning paradigms may be envisioned based on the nature of data or feedback available to the learning algorithm For example, a supervised learning approach may involve learning a function that maps an input to an output based on a labeled training example, wherein each training example may be a pair consisting of the input and the corresponding output. For example, an unsupervised learning approach may involve detecting patterns in the data with no pre-existing labels. For example, a reinforcement learning approach may involve performing a sequence of actions in an environment to maximize the cumulative reward. In some embodiments, it is possible to apply machine learning algorithms using a combination or interpolation of the above-mentioned approaches. For example, a semi-supervised learning approach may use a combination of a small amount of labeled data with a large amount of unlabeled data during training. In this regard semi-supervised learning may be considered as falling between unsupervised learning (with no labeled training data) and supervised learning (with only labeled training data). SUMMARY [0003] A method performed by a wireless transmit / receive unit (WTRU) may comprise: receiving a physical downlink shared channel (PDSCH) associated with a space canonical correlation analysis (CCA) transmission, wherein the space CCA transmission includes a group of resource elements (REs), including: a first group of REs for carrying data associated with a first layer; a second group of REs for carrying data from the first layer and a second layer, wherein a transmit power difference between the first layer and the second layer is greater than a threshold; a third group of REs for carrying a CCA phase correction reference symbol; and a fourth group of REs for carrying data from the first layer and data from the second layer, wherein the transmit power of the first layer is equal to the transmit power of the second layer; constructing a first space CCA view and a second space CCA view in a receive antenna domain in a space CCA region; and decoding the first group of REs, the second group of REs, and the fourth group of REs in the space CCA transmission. The method may further comprise receiving configuration information associated with a space CCA transmission. The method may further comprise utilizing the third group of REs for a phase correction. [0004] The configuration information may include a layer specific space CCA region configuration. The configuration information may include the configuration information includes a percentage of overlap between the first layer and the second layer. The space CCA regions may include the first group of REs, the second group of REs, and the third group of REs. The first space CCA view may be constructed from a first set of receive antenna elements and the second space CCA view is constructed from a second set of receive antenna elements. The first set of receive antenna elements may not not overlap with second set of receive antenna elements. BRIEF DESCRIPTION OF THE DRAWINGS [0005] A more detailed understanding may be had from the following description, given by way of example in conjunction with the accompanying drawings, wherein like reference numerals in the figures indicate like elements, and wherein: [0006] FIG. 1A is a system diagram illustrating an example communications system in which one or more disclosed embodiments may be implemented; [0007] FIG. 1 B is a system diagram illustrating an example wireless transmit/receive unit (WTRU) that may be used within the communications system illustrated in FIG. 1A according to an embodiment; [0008] FIG. 1C is a system diagram illustrating an example radio access network (RAN) and an example core network (CN) that may be used within the communications system illustrated in FIG. 1A according to an embodiment; [0009] FIG. 1D is a system diagram illustrating a further example RAN and a further example CN that may be used within the communications system illustrated in FIG. 1A according to an embodiment; [0010] FIG. 2A-D are diagrams illustrating NR DMRS symbol configuration Type 1 for 4x4 MIMI; [0011] FIG. 3 is a diagram illustrating DMRS based channel estimation and equalization; [0012] FIGs. 4A-4C are diagrams illustrating various PDSCH transmission; [0013] FIG. 5 is a diagram illustrating a PDSCH with space CCA transmission; [0014] FIG. 6 is a diagram illustrati