EP-4740622-A1 - SYSTEMS, METHODS, AND NON-TRANSITORY PROCESSOR-READABLE MEDIA FOR POWER CONTROL FOR UPLINK TRANSMISSIONS

EP4740622A1EP 4740622 A1EP4740622 A1EP 4740622A1EP-4740622-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

YAO, Ke
GAO, BO
ZHANG, YANG
GUO, XIAOLONG
MEI, Meng

Assignees

ZTE Corporation

Dates

Publication Date: 20260513
Application Date: 20230714

Claims (20)

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; 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.
The 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.
The method of claim 1, wherein the scaling factor comprises at least one of: 1; N1/N; a value greater than N1/N; or a value less than 1, 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.
The 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.
The 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.
The method of claim 1, wherein the power capability report comprises power capability of at least one of Power Amplifier (PA) capability, lowest power capability, or lowest PA capability.
The method of claim 1, wherein the power capability report comprises power capability of at least one of full power, a power ratio over full power, or a power gap compared with full power.
The 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.
The method of claim 8, wherein at least one of: one of the one or more first matrices comprises one layer; one of the one or more first matrices comprises one column, or one row; one of the one or more first matrices comprises N element (s) , and each of the N elements corresponds to a respective port, wherein N is a positive integer; one of the one or more first matrices comprises at least one zero-valued element; or one of the one or more first information indicates or corresponds to M port (s) , wherein M is at least one of a positive integer or less than 8.
The method of claim 8, 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.
The method of claim 8, wherein the power capability report comprises at least one of: power capability for a first port; the power capability for the first port and power capability for a fourth port; the power capability for the first port and the fourth port; the power capability for the first port, the power capability for a third port, power capability for a fifth port, and power capability for a seventh port; the power capability for the first port and the fifth port, the power capability for the third port and the seventh port; the power capability for the first port, the third port, the fifth port, and the seventh port; the power capability for the first port and the fifth port, the power capability for the second port and the sixth port, the power capability for the third port and the seventh port, and the power capability for the fourth port and the eighth port; or the power capability for the first port, the third port, the fifth port, and the seventh port, and the power capability for the second port, the fourth port, the sixth port, and the eighth port.
The method of claim 1 or 8, wherein the power capability report is determined according to a number of port groups.
The method of claim 12, wherein at least one of: the number of port groups comprises each of numbers of port groups reported by the wireless communication device to the network; the number of port groups is a largest number of port groups among the numbers of port groups reported by the wireless communication device to the network; or the number of port groups is a number of port groups configured or indicated by the network to the wireless communication device.
The method of claim 12, 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.
The method of claim 14, wherein: one of the one or more first TPMI corresponds to a number of transmit (Tx) ports, the number of Tx ports is same as the number of port groups; and each of the Tx ports corresponds to a number of ports in a port group corresponding to the number of port groups.
The method of claim 14, wherein: one of the one or more first matrices corresponds to a number of Tx ports, wherein the number of Tx ports is same as the number of port groups; and each of the Tx ports corresponds to a number of ports in a port group corresponding to the number of port groups.
The method of claim 14, wherein: one of the one or more first information corresponds to a number of ports; and each port of the one of the one or more first information corresponds to a number of ports in a port group, wherein the port group corresponds to the number of port groups.
The method of claim 12, wherein one of: 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; the number of port groups is 4, the power capability report comprises at least one of: power capability for a first port group; the power capability for the first port group and power capability for a third port group; the power capability for the first port group, power capability for a second port group, and the power capability for the third port group; or the power capability for the first port group and the third port group , and the power capability for the second port group and a fourth port group; or the power capability for the first port group, the second port group, and the third port group; the number of port groups is 8, and each of the port group has one port, the power capability report comprises at least one of: a power capability for a first port; the power capability for the first port, and power capability for a fourth port; the power capability for the first port, power capability for a third port, power capability for a fifth port, and power capability for a seventh port; the power capability for the first port, power capability for a second port, the power capability for the third port, the power capability for the fifth port, power capability for a sixth port, and the power capability for the seventh port; the power capability for the first port and the fourth port; the power capability for the first port, the third port, the fifth port, and the seventh port; the power capability for the first port and the fifth port, the power capability for the second port and the sixth port, the power capability for the third port and seventh port, and the power capability for the fourth port and eighth port; or the power capability for the first port, third port, fifth port, and seventh port, and the power capability for the second port, the fourth port, the sixth port, and the eight port.
The method of claim 2, wherein at least one of: the scaled power for the uplink transmission is evenly split among Non-Zero-Power (NZP) ports of the uplink transmission; the scaled power for the uplink transmission is evenly split among NZP elements of a precoder of the uplink transmission; the scaled power for the uplink transmission is evenly split among Multiple Input Multiple Output (MIMO) layers of the uplink transmission.
The method of claim 19, wherein the scaled power for the uplink transmission of one of the NZP ports is split evenly among layers or among NZP elements in the one of the NZP ports.

Description

SYSTEMS, METHODS, AND NON-TRANSITORY PROCESSOR-READABLE MEDIA FOR POWER CONTROL FOR UPLINK TRANSMISSIONS 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 TPMI 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, G1, etc. ) and corresponding port group supporting the full power, according to various arrangements. FIG. 11 is a table that illustrates the relationship between the ident