Search

US-20260129586-A1 - SYSTEMS, METHODS, AND NON-TRANSITORY PROCESSOR-READABLE MEDIA FOR POWER CONTROL FOR UPLINK TRANSMISSIONS

US20260129586A1US 20260129586 A1US20260129586 A1US 20260129586A1US-20260129586-A1

Abstract

A wireless communication method includes determining, by a wireless communication device, a precoder for an uplink transmission, determining, by a wireless communication device, power for the uplink transmission according to a scaling factor, wherein the scaling factor is determined according to a power capability report, and sending, by a wireless communication device to a network, the uplink transmission according to the precoder and/or the power for the uplink transmission.

Inventors

  • Ke Yao
  • Bo Gao
  • Yang Zhang
  • Xiaolong GUO
  • Meng MEI

Assignees

  • ZTE CORPORATION

Dates

Publication Date
20260507
Application Date
20260102

Claims (20)

  1. 1 . A wireless communication method, comprising: determining, by a wireless communication device, a precoder for an uplink transmission; determining, by a wireless communication device, power for the uplink transmission according to a scaling factor, wherein the scaling factor is determined according to a power capability report; sending, by a wireless communication device to a network, the uplink transmission according to the precoder and the power for the uplink transmission; and determining, by a wireless communication device, a coefficient of an element of the precoder which is an 8-port precoding matrix, according to a product of 1/√{square root over (N g )} and a coefficient of each element of a corresponding 4-port or 2-port precoding matrix, where Ng is a number of port groups corresponding to the uplink transmission.
  2. 2 . The wireless communication method of claim 1 , further comprising determining, by the wireless communication device, a scaled power for the uplink transmission by applying a scaling factor to a linear power of the uplink transmission.
  3. 3 . The wireless communication method of claim 1 , wherein the scaling factor comprises at least one of: 1; or N1/N, wherein N1 is a number of Non-Zero-Power (NZP) ports of the uplink transmission, and N is a number of ports of the wireless communication device used for the uplink transmission.
  4. 4 . The wireless communication method of claim 1 , wherein the power capability report is sent by the wireless communication device to the network; or the power capability report comprises power capability for full power mode 2.
  5. 5 . The wireless communication method of claim 1 , wherein the power capability report comprises power capability for one or more ports or one or more port groups, of the wireless communication device.
  6. 6 . The wireless communication method of claim 1 , wherein the power capability report comprises power capability of full power.
  7. 7 . The wireless communication method of claim 1 , wherein the power capability report comprises power capability for at least one of one or more first Transmitted Precoding Matrix Indicator (TPMI), one or more first matrices, or one or more first information; and the wireless communication device determines power capability for at least one of a second TPMI or a second precoding matrix according to the at least one of the one or more first TPMI, the one or more first matrices, or the one or more first information.
  8. 8 . The wireless communication method of claim 7 , wherein one of the one or more first information corresponds to M port(s), wherein Mis at least one of a positive integer or is less than 8.
  9. 9 . The wireless communication method of claim 7 , wherein the second TPMI or the second precoding matrix having same NZP ports with one of the one or more first TPMIs is determined as a same power capability as for the one of the one or more first TPMIs; the second TPMI or the second precoding matrix having same NZP ports with one of the one or more first matrices is determined as a same power capability as for the one of the one or more first matrices; the second TPMI or the second precoding matrix with NZP ports is determined as a same power capability as for one of the one or more first information which indicates or corresponds to same ports as the NZP ports.
  10. 10 . The wireless communication method of claim 1 , wherein the power capability report is determined according to a number of port groups.
  11. 11 . The wireless communication method of claim 10 , wherein the number of port groups is a number of port groups configured or indicated by the network to the wireless communication device.
  12. 12 . The wireless communication method of claim 10 , further comprising: the power capability report comprises power capability for at least one of one or more first Transmitted Precoding Matrix Indicator (TPMI), one or more first matrices, or one or more first information, according to the number of port groups.
  13. 13 . The wireless communication method of claim 10 , wherein: the number of port groups is 2, the power capability report comprises at least one of: power capability for a first port group; or power capability for a second port group.
  14. 14 . The wireless communication method of claim 1 , wherein, a coefficient of the precoder is determined based on at least one of a number of Non-Zero-Power (NZP) elements of the precoder, a number of NZP ports of the precoder, or a number of layers of the precoder.
  15. 15 . The wireless communication method of claim 14 , wherein at least one of: a power portion among ports of the precoder are same; or elements of a port group of the precoder have a same coefficient.
  16. 16 . The wireless communication method of claim 14 , wherein at least one of: a power portion among layers of the precoder are same; elements of all NZP elements of the precoder have a same coefficient; or the coefficient is determined as 1/N_Element, wherein N_element is a number of all NZP elements of the precoder.
  17. 17 . The wireless communication method of claim 14 , wherein the coefficient of an NZP element is a minimum of 1/sqrt(N*Mp) among all NZP ports of the precoder; wherein Mp is a number of layers for port p, or a number of NZP elements for port p; and Nis a number of NZP ports.
  18. 18 . A wireless communication device, comprising: at least one processor configured to: determine a precoder for an uplink transmission; determine power for the uplink transmission according to a scaling factor, wherein the scaling factor is determined according to a power capability report; send, via a transmitter to a network, the uplink transmission according to the precoder and the power for the uplink transmission; and determine a coefficient of an element of the precoder which is an 8-port precoding matrix, according to a product of 1/√{square root over (N g )} times a coefficient of each element of a corresponding 4-port or 2-port precoding matrix, where Ng is a number of port groups corresponding to the uplink transmission.
  19. 19 . A wireless communication method, comprising: receiving, by a network from a wireless communication device, an uplink transmission, wherein the uplink transmission is transmitted using a precoder and a power determined by the wireless communication device according to a scaling factor, the scaling factor determined according to a power capability report, wherein a coefficient of an element of the precoder which is an 8-port precoding matrix, is determined according to a product of 1/√{square root over (N g )} and a coefficient of each element of a corresponding 4-port or 2-port precoding matrix, where Ng is a number of port groups corresponding to the uplink transmission.
  20. 20 . A network device, comprising: at least one processor configured to: receive, via a receiver from a wireless communication device, an uplink transmission, wherein the uplink transmission is transmitted using a precoder and a power determined by the wireless communication device according to a scaling factor, the scaling factor determined according to a power capability report, wherein a coefficient of an element of the precoder which is an 8-port precoding matrix, is determined according to a product of 1/√{square root over (N g )} and a coefficient of each element of a corresponding 4-port or 2-port precoding matrix, where Ng is a number of port groups corresponding to the uplink transmission.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application claims the benefit of priority under 35 U.S.C. § 120 as a continuation of PCT Patent Application No. PCT/CN2023/107509, filed on Jul. 14, 2023, the disclosure of which is incorporated herein by reference in its entirety. TECHNICAL FIELD The disclosure relates generally to wireless communications and, more particularly, to systems, methods, and non-transitory processor-readable media for implementing power control for uplink transmissions. BACKGROUND New Radio (NR) technology of Fifth Generation (5G) mobile communication systems continuously improve the quality and user experience of higher quality wireless communication. To achieve such end, Customer-Premises Equipment (CPE) such as Fixed Wireless Access (FWA) support high capability UE and improve Uplink (UL) quality. For example, up to 8 Transmission (Tx) (e.g., antenna ports) for UL transmission can be implemented to further improve higher quality wireless communication. SUMMARY In some arrangements, systems, methods, apparatuses, and non-transitory computer-readable media allow determining, by a wireless communication device, a precoder for an uplink transmission, determining, by a wireless communication device, power for the uplink transmission according to a scaling factor, wherein the scaling factor is determined according to a power capability report, and sending, by a wireless communication device to a network, the uplink transmission according to the precoder and/or the power for the uplink transmission. In some arrangements, systems, methods, apparatuses, and non-transitory computer-readable media allow receiving, by a network from a wireless communication device, an uplink transmission, wherein the uplink transmission is transmitted using a precoder and/or a power determined by the wireless communication device, wherein the power is determined according to a scaling factor, the scaling factor is determined according to a power capability report. The above and other aspects and their implementations are described in greater detail in the drawings, the descriptions, and the claims. BRIEF DESCRIPTION OF THE DRAWINGS Various example arrangements of the present solution are described in detail below with reference to the following figures or drawings. The drawings are provided for purposes of illustration only and merely depict example arrangements of the present solution to facilitate the reader's understanding of the present solution. Therefore, the drawings should not be considered limiting of the breadth, scope, or applicability of the present solution. It should be noted that for clarity and ease of illustration, these drawings are not necessarily drawn to scale. FIG. 1 is a diagram illustrating an example cellular communication network, in accordance with some arrangements. FIG. 2 illustrates block diagrams of an example base station and an example user equipment device, in accordance with some arrangements. FIG. 3A is a diagram illustrating UE Tx antenna architecture 2Tx that is non-coherent, in accordance with some arrangements. FIG. 3B is a diagram illustrating UE Tx antenna architecture 2Tx that is coherent, in accordance with some arrangements. FIG. 4A is a diagram illustrating UE Tx antenna architecture 4Tx that is non-coherent, in accordance with some arrangements. FIG. 4B is a diagram illustrating UE Tx antenna architecture 4Tx that is partially-coherent, in accordance with some arrangements. FIG. 4C is a diagram illustrating UE Tx antenna architecture 4Tx that is full-coherent, in accordance with some arrangements. FIG. 5A is a diagram illustrating UE Tx antenna architecture 6Tx that is non-coherent, in accordance with some arrangements. FIG. 5B is a diagram illustrating UE Tx antenna architecture 6Tx that is partially-coherent, in accordance with some arrangements. FIG. 5C is a diagram illustrating UE Tx antenna architecture 6Tx that is full-coherent, in accordance with some arrangements. FIG. 6A is a diagram illustrating UE Tx antenna architecture 8Tx that is non-coherent, in accordance with some arrangements. FIG. 6B is a diagram illustrating UE Tx antenna architecture 8Tx that is partially-coherent, in accordance with some arrangements. FIG. 6C is a diagram illustrating UE Tx antenna architecture 8Tx that is full-coherent, in accordance with some arrangements. FIG. 7 is a table illustrating an example relationship between the indication of a number of groups and corresponding indication of TPM1 or rank, according to various arrangements. FIG. 8 is a flowchart diagram illustrating an example method for implementing power control for UL transmissions, according to various arrangements. FIG. 9 is a table illustrating an example relationship between PA capability type, the lowest PA capability with high priority, and the lowest PA capability with low priority, according to various arrangements. FIG. 10 is a table that illustrates the relationship between the identifier (e.g., G0,