Method for power control of uplink channel spatial multiplexing

Abstract

Various aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment may determine that multiple uplink channels are to be transmitted contemporaneously on component carriers via different antennas. The user equipment may determine corresponding transmit powers of multiple uplink communications based at least in part on a priority rule set identifying corresponding priorities of multiple uplink communications associated with the multiple uplink channels. The user equipment may transmit the multiple uplink communications using the corresponding transmit powers. Numerous other aspects are provided.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Greek Patent Application No. 20180100262, filed on June 15, 2018, entitled “TECHNIQUES AND APPARATUSES FOR POWER CONTROL FOR SPATIAL MULTIPLEXING OF UPLINK CHANNELS,” and U.S. Non-Provisional Patent Application No. 16 / 440,711, filed on June 13, 2019, entitled “POWER CONTROL FOR SPATIAL MULTIPLEXING OF UPLINK CHANNELS,” which are hereby expressly incorporated herein by reference.

[0003] Public domain

[0004] Aspects of the present disclosure relate generally to wireless communications and, more particularly, to techniques and apparatus for power control for uplink channel spatial multiplexing.

[0005] background

[0006] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasting. Typical wireless communication systems may employ multiple access technologies that can support communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and long term evolution (LTE). LTE / LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP).

[0007] A wireless communication network may include several base stations (BS) that can support communication of several user equipments (UEs). User equipments (UEs) may communicate with base stations (BSs) via downlinks and uplinks. A downlink (or forward link) refers to a communication link from a BS to a UE, while an uplink (or reverse link) refers to a communication link from a UE to a BS. As will be described in more detail herein, a BS may be referred to as a Node B, a gNB, an Access Point (AP), a Radio Head, a Transmit Receiving Point (TRP), a New Radio (NR) BS, a 5G Node B, etc.

[0008] The above multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different user equipment to communicate at the city, country, region, and even global level. New Radio (NR) (which may also be referred to as 5G) is an enhancement set to the LTE mobile standard promulgated by the Third Generation Partnership Project (3GPP). NR is designed to better support mobile broadband Internet access by improving spectrum efficiency, reducing costs, improving services, utilizing new spectrum, and using orthogonal frequency division multiplexing (OFDM) (CP-OFDM) with cyclic prefix (CP) on the downlink (DL), using CP-OFDM and / or SC-FDM (e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM) on the uplink (UL), and supporting beamforming, multiple input multiple output (MIMO) antenna technology and carrier aggregation. Other open standards are better integrated to better support mobile broadband Internet access. However, as the demand for mobile broadband access continues to grow, there is a need for further improvements in LTE and NR technologies. Preferably, these improvements should be applicable to other multiple access technologies and telecommunication standards that adopt these technologies.

[0009] Overview

[0010] In some aspects, a wireless communication method performed by a user equipment (UE) may include determining that multiple uplink channels are to be transmitted contemporaneously on a component carrier via different antennas. The method may include determining respective transmit powers of the multiple uplink communications based at least in part on determining that the multiple uplink channels are to be transmitted contemporaneously on the component carrier via different antennas and based at least in part on a priority rule set identifying respective priorities of multiple uplink communications associated with the multiple uplink channels, wherein a total transmit power to be used for the multiple uplink communications satisfies a maximum transmit power of the UE. The method may include determining whether a power reduction is required for the respective transmit powers based at least in part on determining the respective transmit powers of the multiple uplink communications. The method may include transmitting the multiple uplink communications using the respective transmit powers based at least in part on determining whether a power reduction is required.

[0011] In some aspects, a user equipment for wireless communication may include a memory and one or more processors operatively coupled to the memory. The memory and the one or more processors may be configured to: determine that the multiple uplink channels will be transmitted concurrently on component carriers via different antennas. The memory and the one or more processors may be configured to: determine the corresponding transmit powers of the multiple uplink communications based at least in part on the determination that the multiple uplink channels will be transmitted concurrently on component carriers via different antennas and at least in part on a priority rule set identifying the corresponding priorities of the multiple uplink communications associated with the multiple uplink channels, wherein the total transmit power used for the multiple uplink communications satisfies the maximum transmit power of the UE. The memory and the one or more processors may be configured to: determine whether the corresponding transmit power needs to be reduced based at least in part on the determination of the corresponding transmit power of the multiple uplink communications. The memory and the one or more processors may be configured to: transmit the multiple uplink communications using the corresponding transmit power based at least in part on the determination of whether power reduction is needed.

[0012] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a user equipment, may cause the one or more processors to: determine that multiple uplink channels will be transmitted concurrently on a component carrier via different antennas. The one or more instructions, when executed by one or more processors of the user equipment, may cause the one or more processors to: determine the respective transmit powers of the multiple uplink communications based at least in part on the determination that the multiple uplink channels will be transmitted concurrently on a component carrier via different antennas and at least in part on a priority rule set identifying respective priorities of multiple uplink communications associated with the multiple uplink channels, wherein the total transmit power to be used for the multiple uplink communications satisfies the maximum transmit power of the UE. The one or more instructions, when executed by one or more processors of the user equipment, may cause the one or more processors to: determine whether power reduction of the respective transmit powers is required based at least in part on the determination of the respective transmit powers of the multiple uplink communications. The one or more instructions, when executed by one or more processors of the user equipment, may cause the one or more processors to transmit the plurality of uplink communications using respective transmit powers based at least in part on determining whether power reduction is required.

[0013] In some aspects, an apparatus for wireless communication may include: means for determining that multiple uplink channels are to be transmitted contemporaneously on a component carrier via different antennas. The apparatus may include: means for determining respective transmit powers of the multiple uplink communications based at least in part on the determination that the multiple uplink channels are to be transmitted contemporaneously on the component carrier via different antennas and based at least in part on a priority rule set identifying respective priorities of the multiple uplink communications associated with the multiple uplink channels, wherein a total transmit power to be used for the multiple uplink communications satisfies a maximum transmit power of the apparatus. The apparatus may include: means for determining whether a power reduction is required for the respective transmit powers based at least in part on the determination of the respective transmit powers of the multiple uplink communications. The apparatus may include: means for transmitting the multiple uplink communications using the respective transmit powers based at least in part on the determination of whether a power reduction is required.

[0014] In some aspects, a wireless communication method performed by a base station (BS) may include determining that multiple uplink channels are to be transmitted contemporaneously on a component carrier via different antennas. The method may include determining respective transmit powers of the multiple uplink communications based at least in part on determining that the multiple uplink channels are to be transmitted contemporaneously on the component carrier via different antennas and based at least in part on a priority rule set identifying respective priorities of multiple uplink communications associated with the multiple uplink channels, wherein a total transmit power to be used for the multiple uplink communications satisfies a maximum transmit power of a user equipment (UE). The method may include determining whether a power reduction is required for the respective transmit powers based at least in part on determining the respective transmit powers of the multiple uplink communications. The method may include transmitting information to the UE identifying the respective transmit powers that the UE will use to transmit the multiple uplink communications based at least in part on determining whether a power reduction is required.

[0015] In some aspects, a base station for wireless communication may include a memory and one or more processors operatively coupled to the memory. The memory and the one or more processors may be configured to determine that a plurality of uplink channels will be transmitted concurrently on a component carrier via different antennas. The memory and the one or more processors may be configured to determine the respective transmit powers of the plurality of uplink communications based at least in part on the determination that the plurality of uplink channels will be transmitted concurrently on the component carrier via different antennas and at least in part on a priority rule set identifying respective priorities of the plurality of uplink communications associated with the plurality of uplink channels, wherein the total transmit power to be used for the plurality of uplink communications satisfies the maximum transmit power of the UE. The memory and the one or more processors may be configured to determine whether a power reduction is required for the respective transmit powers based at least in part on the determination of the respective transmit powers of the plurality of uplink communications. The memory and the one or more processors may be configured to transmit information identifying the respective transmit powers that the UE will use to transmit the plurality of uplink communications to the UE based at least in part on the determination of whether a power reduction is required.

[0016] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a base station, may cause the one or more processors to: determine that the multiple uplink channels will be transmitted concurrently on a component carrier via different antennas. The one or more instructions, when executed by the one or more processors of the base station, may cause the one or more processors to: determine the respective transmit powers of the multiple uplink communications based at least in part on the determination that the multiple uplink channels will be transmitted concurrently on the component carrier via different antennas and at least in part on a priority rule set identifying respective priorities of the multiple uplink communications associated with the multiple uplink channels, wherein the total transmit power to be used for the multiple uplink communications satisfies the maximum transmit power of the UE. The one or more instructions, when executed by the one or more processors of the base station, may cause the one or more processors to: determine whether power reduction of the respective transmit powers is required based at least in part on the determination of the respective transmit powers of the multiple uplink communications. The one or more instructions, when executed by one or more processors of the base station, may cause the one or more processors to: transmit to the UE information identifying respective transmit powers that the UE will use to transmit the plurality of uplink communications based at least in part on determining whether power reduction is required.

[0017] In some aspects, an apparatus for wireless communication may include: a device for determining that multiple uplink channels are to be transmitted contemporaneously on a component carrier via different antennas. The apparatus may include: a device for determining the respective transmit powers of the multiple uplink communications based at least in part on the determination that the multiple uplink channels are to be transmitted contemporaneously on the component carrier via different antennas and at least in part on a priority rule set identifying the respective priorities of the multiple uplink communications associated with the multiple uplink channels, wherein the total transmit power to be used for the multiple uplink communications satisfies the maximum transmit power of the UE. The apparatus may include: a device for determining whether a power reduction is required for the respective transmit powers based at least in part on the determination of the respective transmit powers of the multiple uplink communications. The apparatus may include: a device for transmitting to the UE information identifying the respective transmit powers that the UE will use to transmit the multiple uplink communications based at least in part on the determination of whether a power reduction is required.

[0018] In some aspects, a wireless communication method performed by a UE may include determining that multiple uplink channels are to be transmitted contemporaneously on a component carrier via different antennas. The method may include determining respective transmit powers of multiple uplink communications associated with the multiple channels based at least in part on determining that the multiple uplink channels are to be transmitted contemporaneously on the component carrier via different antennas and based at least in part on the number of channels that the UE is scheduled to transmit, wherein respective transmissions of the multiple uplink communications are scheduled to overlap on at least one OFDM symbol, wherein the total transmit power to be used for the multiple uplink communications satisfies the maximum transmit power of the UE. The method may include determining whether power reduction is required for the respective transmit powers based at least in part on determining the respective transmit powers of the multiple uplink communications. The method may include transmitting the multiple uplink communications using the respective transmit powers based at least in part on determining whether power reduction is required.

[0019] In some aspects, a user equipment for wireless communication may include a memory and one or more processors operatively coupled to the memory. The memory and the one or more processors may be configured to determine that a plurality of uplink channels will be transmitted concurrently on a component carrier via different antennas. The memory and the one or more processors may be configured to determine the corresponding transmit powers of a plurality of uplink communications associated with the plurality of channels based at least in part on the determination that the plurality of uplink channels will be transmitted concurrently on a component carrier via different antennas and at least in part on the number of channels scheduled to be transmitted by the UE, wherein the respective transmissions of the plurality of uplink communications are scheduled to overlap on at least one OFDM symbol, wherein the total transmit power used for the plurality of uplink communications satisfies the maximum transmit power of the UE. The memory and the one or more processors may be configured to determine whether a power reduction is required for the respective transmit powers based at least in part on the determination of the respective transmit powers of the plurality of uplink communications. The memory and the one or more processors may be configured to transmit the plurality of uplink communications using the respective transmit powers based at least in part on the determination of whether a power reduction is required.

[0020] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a user equipment, may cause the one or more processors to: determine that multiple uplink channels will be transmitted concurrently on a component carrier via different antennas. The one or more instructions, when executed by one or more processors of the user equipment, may cause the one or more processors to: determine the respective transmit powers of multiple uplink communications associated with the multiple channels based at least in part on the determination that the multiple uplink channels will be transmitted concurrently on the component carrier via different antennas and based at least in part on the number of channels scheduled for transmission by the UE, wherein the respective transmissions of the multiple uplink communications are scheduled to overlap on at least one orthogonal OFDM symbol, wherein the total transmit power to be used for the multiple uplink communications satisfies the maximum transmit power of the UE. The one or more instructions, when executed by one or more processors of the user equipment, may cause the one or more processors to: determine whether power reduction of the respective transmit powers is required based at least in part on the determination of the respective transmit powers of the multiple uplink communications. The one or more instructions, when executed by one or more processors of the user equipment, may cause the one or more processors to transmit the plurality of uplink communications using respective transmit powers based at least in part on determining whether power reduction is required.

[0021] In some aspects, an apparatus for wireless communication may include: means for determining that multiple uplink channels are to be transmitted contemporaneously on a component carrier via different antennas. The apparatus may include: means for determining respective transmit powers of multiple uplink communications associated with the multiple channels based at least in part on determining that the multiple uplink channels are to be transmitted contemporaneously on the component carrier via different antennas and based at least in part on the number of channels that the apparatus is scheduled to transmit, wherein respective transmissions of the multiple uplink communications are scheduled to overlap on at least one OFDM symbol, wherein a total transmit power to be used for the multiple uplink communications satisfies a maximum transmit power of the apparatus. The apparatus may include: means for determining whether power reduction is required for the respective transmit powers based at least in part on determining the respective transmit powers of the multiple uplink communications. The apparatus may include: means for transmitting the multiple uplink communications using respective transmit powers based at least in part on determining whether power reduction is required.

[0022] In some aspects, a wireless communication method performed by a BS may include determining that multiple uplink channels are to be transmitted contemporaneously on a component carrier via different antennas. The method may include determining the respective transmit powers of multiple uplink communications associated with the multiple channels based at least in part on the determination that the multiple uplink channels are to be transmitted contemporaneously on the component carrier via different antennas and based at least in part on the number of channels that the UE is scheduled to transmit, wherein the respective transmissions of the multiple uplink communications are scheduled to overlap on at least one OFDM symbol, wherein the total transmit power to be used for the multiple uplink communications satisfies the maximum transmit power of the UE. The method may include determining whether power reduction is required for the respective transmit powers based at least in part on the determination of the respective transmit powers of the multiple uplink communications. The method may include transmitting information to the UE that causes the UE to transmit the multiple uplink communications using the respective transmit powers based at least in part on the determination of whether power reduction is required.

[0023] In some aspects, a base station for wireless communication may include a memory and one or more processors operatively coupled to the memory. The memory and the one or more processors may be configured to determine that a plurality of uplink channels will be transmitted concurrently on a component carrier via different antennas. The memory and the one or more processors may be configured to determine the respective transmit powers of a plurality of uplink communications associated with the plurality of uplink channels based at least in part on the determination that the plurality of uplink channels will be transmitted concurrently on a component carrier via different antennas and based at least in part on the number of channels scheduled to be transmitted by a user equipment (UE), wherein the respective transmissions of the plurality of uplink communications are scheduled to overlap on at least one OFDM symbol, wherein the total transmit power used for the plurality of uplink communications satisfies the maximum transmit power of the UE. The memory and the one or more processors may be configured to determine whether a power reduction is required for the respective transmit powers based at least in part on the determination of the respective transmit powers of the plurality of uplink communications. The memory and the one or more processors may be configured to transmit information to the UE that causes the UE to transmit the plurality of uplink communications using the respective transmit powers based at least in part on the determination of whether a power reduction is required.

[0024] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a base station, may cause the one or more processors to: determine that the multiple uplink channels will be transmitted concurrently on a component carrier via different antennas. The one or more instructions, when executed by the one or more processors of the base station, may cause the one or more processors to: determine the respective transmit powers of multiple uplink communications associated with the multiple channels based at least in part on the determination that the multiple uplink channels will be transmitted concurrently on the component carrier via different antennas and based at least in part on the number of channels scheduled for transmission by the UE, wherein the respective transmissions of the multiple uplink communications are scheduled to overlap on at least one OFDM symbol, wherein the total transmit power to be used for the multiple uplink communications satisfies the maximum transmit power of the UE. The one or more instructions, when executed by the one or more processors of the base station, may cause the one or more processors to: determine whether power reduction of the respective transmit powers is required based at least in part on the determination of the respective transmit powers of the multiple uplink communications. The one or more instructions, when executed by one or more processors of the base station, may cause the one or more processors to: transmit information to the UE that causes the UE to transmit the multiple uplink communications using corresponding transmit powers based at least in part on determining whether power reduction is required.

[0025] In some aspects, an apparatus for wireless communication may include: a device for determining that multiple uplink channels are to be transmitted contemporaneously on a component carrier via different antennas. The apparatus may include: a device for determining the respective transmit powers of multiple uplink communications associated with the multiple channels based at least in part on the determination that the multiple uplink channels are to be transmitted contemporaneously on the component carrier via different antennas and based at least in part on the number of channels that the UE is scheduled to transmit, wherein the respective transmissions of the multiple uplink communications are scheduled to overlap on at least one orthogonal frequency division multiplexing (OFDM) symbol, wherein the total transmit power used for the multiple uplink communications satisfies the maximum transmit power of the UE. The apparatus may include: a device for determining whether a power reduction is required for the respective transmit powers based at least in part on the determination of the respective transmit powers of the multiple uplink communications. The apparatus may include: a device for transmitting information to the UE for causing the UE to transmit the multiple uplink communications using the respective transmit powers based at least in part on the determination of whether a power reduction is required.

[0026] Aspects generally include methods, apparatuses, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication devices, and / or processing systems as substantially described herein with reference to and as illustrated in the accompanying drawings and description.

[0027] The foregoing has broadly outlined the features and technical advantages of examples according to the present disclosure in an effort to make the following detailed description better understood. Additional features and advantages will be described hereinafter. The disclosed concepts and specific examples can be easily used as a basis for modifying or designing other structures for implementing the same purpose as the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, both in terms of their organization and method of operation, and the associated advantages will be better understood by considering the following description in conjunction with the accompanying drawings. Each of the accompanying drawings is provided for illustration and description purposes and does not define limitations on the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to understand the above-stated features of the present disclosure in detail, the above briefly summarized content may be described in more detail with reference to various aspects, some of which are illustrated in the accompanying drawings. However, it should be noted that the accompanying drawings only illustrate certain typical aspects of the present disclosure and should not be considered to limit its scope, as the description may allow for other equally effective aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0030] Figure 1 is a block diagram conceptually illustrating an example of a wireless communication network in accordance with various aspects of the present disclosure.

[0031] Figure 2is a block diagram conceptually illustrating an example of a base station and a UE in communication in a wireless communication network according to various aspects of the present disclosure.

[0032] Figure 3 is a block diagram conceptually illustrating an example slot format with a normal cyclic prefix in accordance with various aspects of the present disclosure.

[0033] Figure 4 is a diagram illustrating an example of power control of uplink channel spatial multiplexing based at least in part on a priority rule set in accordance with various aspects of the present disclosure.

[0034] Figure 5 is a diagram illustrating an example of power control of uplink channel spatial multiplexing based at least in part on a priority rule set in accordance with various aspects of the present disclosure.

[0035] Figure 6 is a diagram illustrating an example of power control of uplink channel spatial multiplexing based at least in part on a priority rule set in accordance with various aspects of the present disclosure.

[0036] Figure 7 is a diagram illustrating an example of power control of uplink channel spatial multiplexing based at least in part on a priority rule set in accordance with various aspects of the present disclosure.

[0037] Figure 8 is a diagram illustrating an example of power control of uplink channel spatial multiplexing based at least in part on a configured number of channels and / or a scheduled number of channels in accordance with various aspects of the present disclosure.

[0038] Fig. 9 is a diagram illustrating an example of power control of uplink channel spatial multiplexing based at least in part on a configured number of channels and / or a scheduled number of channels in accordance with various aspects of the present disclosure.

[0039] Fig.10 is a diagram illustrating an example of power control of uplink channel spatial multiplexing based at least in part on a configured number of channels and / or a scheduled number of channels in accordance with various aspects of the present disclosure.

[0040] Fig.11 is a diagram illustrating an example process, performed, for example, by user equipment, in accordance with various aspects of the present disclosure.

[0041] Fig.12 is a diagram illustrating example processes performed, for example, by a base station in accordance with various aspects of the present disclosure.

[0042] Fig.13 is a diagram illustrating an example process, performed, for example, by user equipment, in accordance with various aspects of the present disclosure.

[0043] Fig.14 is a diagram illustrating example processes performed, for example, by a base station in accordance with various aspects of the present disclosure.

[0044] Detailed Description

[0045] The various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure can be implemented in many different forms and should not be interpreted as being limited to any specific structure or function given throughout the present disclosure. On the contrary, these aspects are provided to make the present disclosure thorough and complete, and it will fully convey the scope of the present disclosure to those skilled in the art. At least partially based on the teachings herein, those skilled in the art will appreciate that the scope of the present disclosure is intended to cover any aspect of the present disclosure disclosed herein, whether it is independently implemented or implemented in combination with any other aspect of the present disclosure. For example, any number of aspects set forth herein can be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such devices or methods practiced using supplements or other other structures, functionality, or structures and functionality as the various aspects of the present disclosure set forth herein. It should be understood that any aspect of the present disclosure disclosed herein can be implemented by one or more elements of the claims.

[0046] Several aspects of telecommunication systems will now be presented with reference to various devices and techniques. These devices and techniques will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements can be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0047] Note that while various aspects may be described herein using terminology typically associated with 3G and / or 4G wireless technologies, various aspects of the present disclosure may be applied in communication systems based on other generations, such as 5G and later generations, including NR technologies.

[0048] Figure 11 is a diagram illustrating a network 100 in which various aspects of the present disclosure may be practiced. The network 100 may be an LTE network or some other wireless network, such as a 5G or NR network. The wireless network 100 may include several BSs 110 (shown as BSs 110a, BSs 110b, BSs 110c, and BSs 110d) and other network entities. A BS is an entity that communicates with a user equipment (UE) and may also be referred to as a base station, NR BS, B node, gNB, 5G B node (NB), access point, transmit receive point (TRP), etc. Each BS may provide communication coverage for a particular geographic area. In 3GPP, the term "cell" may refer to a coverage area of ​​a BS and / or a BS subsystem serving the coverage area, depending on the context in which the term is used.

[0049] A BS may provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs with service subscriptions. A pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscriptions. A femto cell may cover a relatively small geographic area (e.g., a residence) and may allow restricted access by UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG)). A BS for a macro cell may be referred to as a macro BS. A BS for a pico cell may be referred to as a pico BS. A BS for a femto cell may be referred to as a femto BS or a home BS. In Figure 1 In the example shown in , BS 110a may be a macro BS for macro cell 102a, BS 110b may be a pico BS for pico cell 102b, and BS 110c may be a femto BS for femto cell 102c. A BS may support one or more (e.g., three) cells. The terms “eNB,” “base station,” “NR BS{, “gNBB,” “TRPB,” “APP,” “B node,” “5G NB{, and “cell” may be used interchangeably herein.

[0050] In some aspects, the cell may not necessarily be stationary, and the geographic area of ​​the cell may move depending on the location of the mobile BS. In some aspects, the BSs may be interconnected to each other and / or to one or more other BSs or network nodes (not shown) in the access network 100 via various types of backhaul interfaces, such as direct physical connections, virtual networks, and / or the like using any suitable transport network.

[0051] The wireless network 100 may also include a relay station. A relay station is an entity that can receive transmissions of data from an upstream station (e.g., a BS or a UE) and send transmissions of the data to a downstream station (e.g., a UE or a BS). A relay station may also be a UE that can relay transmissions for other UEs. Figure 1 In the example shown in , a relay station 110d may communicate with a macro BS 110a and a UE 120d to facilitate communication between the BS 110a and the UE 120d. A relay station may also be referred to as a relay BS, a relay base station, a relay, or the like.

[0052] The wireless network 100 may be a heterogeneous network including different types of BSs (e.g., macro BSs, pico BSs, femto BSs, relay BSs, etc.). These different types of BSs may have different transmit power levels, different coverage areas, and different effects on interference in the wireless network 100. For example, a macro BS may have a high transmit power level (e.g., 5 to 40 watts), while a pico BS, a femto BS, and a relay BS may have a lower transmit power level (e.g., 0.1 to 2 watts).

[0053] A network controller 130 may be coupled to a set of BSs and may provide coordination and control of these BSs. The network controller 130 may communicate with each BS via a backhaul. The BSs may also communicate with each other directly or indirectly, for example, via a wireless or wired backhaul.

[0054] UE 120 (e.g., 120a, 120b, 120c) may be dispersed throughout the wireless network 100, and each UE may be stationary or mobile. UE may also be referred to as an access terminal, terminal, mobile station, subscriber unit, station, etc. UE may be a cellular phone (e.g., a smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet device, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or equipment, a biometric sensor or device, a wearable device (smart watch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet)), an entertainment device (e.g., a music or video device, or a satellite radio), a vehicle-mounted component or sensor, a smart meter or sensor, an industrial manufacturing equipment, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium.

[0055] Some UEs may be considered as machine type communication (MTC) UEs, or evolved or enhanced machine type communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., which may communicate with a base station, another device (e.g., a remote device), or some other entity. A wireless node may provide connectivity to or to a network (e.g., a wide area network, such as the Internet or a cellular network), for example, via a wired or wireless communication link. Some UEs may be considered as Internet of Things (IoT) devices, and / or may be implemented as NB-IoT (narrowband Internet of Things) devices. Some UEs may be considered as client equipment (CPE). UE 120 may be included inside a housing that houses components of UE 120, such as a processor component, a memory component, etc.

[0056] In general, any number of wireless networks may be deployed in a given geographic area. Each wireless network may support a specific RAT and may operate on one or more frequencies. RAT may also be referred to as radio technology, air interface, etc. Frequency may also be referred to as carrier, frequency channel, etc. Each frequency may support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

[0057] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly (e.g., without using base station 110 as an intermediary to communicate with each other) using one or more sidelink channels. For example, UE 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, etc.), mesh networks, etc. In this case, UE 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by base station 110.

[0058] As indicated above, Figure 1 are provided as examples. Other examples may differ from those described in Figure 1 Examples described.

[0059] Figure 2 A block diagram of a design 200 of a base station 110 and a UE 120 is shown, which may be Figure 1 One for each base station and one for each UE in the base station 110. Base station 110 may be equipped with T antennas 234a through 234t, and UE 120 may be equipped with R antennas 252a through 252r, where in general T≧1 and R≧1.

[0060] At the base station 110, the transmit processor 220 may receive data for one or more UEs from the data source 212, select one or more modulation and coding schemes (MCS) for each UE based at least in part on a channel quality indicator (CQI) received from the UE, process (e.g., encode and modulate) the data for each UE based at least in part on the MCS selected for the UE, and provide data symbols for all UEs. The transmit processor 220 may also process system information (e.g., for semi-static resource partitioning information (SRPI), etc.) and control information (e.g., CQI requests, grants, upper layer signaling, etc.), and provide overhead symbols and control symbols. The transmit processor 220 may also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS)) and synchronization signals (e.g., primary synchronization signals (PSS) and secondary synchronization signals (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, where applicable, and may provide T output symbol streams to T modulators (MOD) 232a to 232t. Each modulator 232 may process a respective output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 232 may further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The T downlink signals from modulators 232a to 232t may be transmitted via T antennas 234a to 234t, respectively. According to various aspects described in more detail below, position coding may be used to generate synchronization signals to convey additional information.

[0061] At UE 120, antennas 252a to 252r may receive downlink signals from base station 110 and / or other base stations and may provide received signals to demodulators (DEMODs) 254a to 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) the received signal to obtain input samples. Each demodulator 254 may further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. A MIMO detector 256 may obtain received symbols from all R demodulators 254a to 254r, perform MIMO detection on the received symbols where applicable, and provide detected symbols. A receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide decoded data for UE 120 to a data sink 260, and provide decoded control information and system information to a controller / processor 280. The channel processor may determine reference signal received power (RSRP), received signal strength indicator (RSSI), reference signal received quality (RSRQ), channel quality indicator (CQI), etc. In some aspects, one or more components of UE 120 may be included in a housing.

[0062] On the uplink, at the UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information from a controller / processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, CQI, etc.). The transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266, if applicable, further processed by modulators 254a through 254r (e.g., for DFT-s-OFDM, CP-OFDM, etc.), and transmitted to the base station 110. At the base station 110, uplink signals from the UE 120 as well as other UEs may be received by the antenna 234, processed by the demodulator 232, detected by the MIMO detector 236, if applicable, and further processed by the receive processor 238 to obtain decoded data and control information sent by the UE 120. The receive processor 238 may provide decoded data to a data sink 239 and decoded control information to a controller / processor 240. The base station 110 may include a communication unit 244 and communicate with the network controller 130 via the communication unit 244. The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292.

[0063] The controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2Any other component(s) of the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component(s) may perform or direct e.g. Fig.11 Process 1100, Fig.12 The process 1200 Fig.13 Process 1300, Fig.14 The operations of process 1400, and / or other processes as described herein. Memories 242 and 282 may store data and program codes for base station 110 and UE 120, respectively. Scheduler 246 may schedule UEs for data transmission on the downlink and / or uplink.

[0064] In some aspects, UE 120 may include: means for determining that a plurality of uplink channels are to be transmitted contemporaneously on a component carrier via different antennas; means for determining respective transmit powers of the plurality of uplink communications based at least in part on the determination that the plurality of uplink channels are to be transmitted contemporaneously on a component carrier via different antennas and based at least in part on a set of priority rules identifying respective priorities of the plurality of uplink communications associated with the plurality of uplink channels; means for determining whether power reduction of the respective transmit powers is required based at least in part on the determination of the respective transmit powers of the plurality of uplink communications; means for transmitting the plurality of uplink communications using the respective transmit powers based at least in part on the determination of whether power reduction is required; and the like. In some aspects, such means may include means for combining Figure 2 One or more components of UE 120 are described.

[0065] In some aspects, base station 110 may include: means for determining that a plurality of uplink channels are to be transmitted contemporaneously on a component carrier via different antennas; means for determining respective transmit powers of the plurality of uplink communications based at least in part on the determination that the plurality of uplink channels are to be transmitted contemporaneously on a component carrier via different antennas and based at least in part on a priority rule set identifying respective priorities of the plurality of uplink communications associated with the plurality of uplink channels; means for determining whether power reduction of the respective transmit powers is required based at least in part on the determination of the respective transmit powers of the plurality of uplink communications; means for transmitting to a UE information identifying respective transmit powers that the UE will use to transmit the plurality of uplink communications based at least in part on the determination of whether power reduction is required; and the like. In some aspects, such means may include in conjunction with Figure 2 One or more components of base station 110 are described.

[0066] In some aspects, UE 120 may include: means for determining that a plurality of uplink channels are to be transmitted contemporaneously on a component carrier via different antennas; means for determining respective transmit powers for a plurality of uplink communications associated with the plurality of channels based at least in part on the determination that the plurality of uplink channels are to be transmitted contemporaneously on the component carrier via different antennas and based at least in part on the number of channels the UE is scheduled to transmit; means for determining whether power reduction of the respective transmit powers is required based at least in part on the determination of the respective transmit powers of the plurality of uplink communications; means for transmitting the plurality of uplink communications using the respective transmit powers based at least in part on the determination of whether power reduction is required; and the like. In some aspects, such means may include means for combining Figure 2 One or more components of UE 120 are described.

[0067] In some aspects, base station 110 may include: means for determining that a plurality of uplink channels are to be transmitted contemporaneously on a component carrier via different antennas; means for determining respective transmit powers of a plurality of uplink communications associated with the plurality of channels based at least in part on the determination that the plurality of uplink channels are to be transmitted contemporaneously on the component carrier via different antennas and based at least in part on the number of channels that a user equipment (UE) is scheduled to transmit; means for determining whether power reduction of the respective transmit powers is required based at least in part on the determination of the respective transmit powers of the plurality of uplink communications; means for transmitting information to the UE causing the UE to transmit the plurality of uplink communications using the respective transmit powers based at least in part on the determination of whether power reduction is required, and the like. In some aspects, such means may include in conjunction with Figure 2 One or more components of base station 110 are described.

[0068] As indicated above, Figure 2 are provided as examples. Other examples may differ from those described in Figure 2 Examples described.

[0069] Figure 3 An example slot format 310 with a normal cyclic prefix is ​​shown. Available time-frequency resources may be divided into resource blocks. Each resource block may cover a set of subcarriers (e.g., 12 subcarriers) in one slot and may include several resource elements. Each resource element may cover one subcarrier in one symbol period (e.g., in time) and may be used to send one modulation symbol, which may be a real value or a complex value.

[0070] For frequency division duplexing in certain telecommunication systems (e.g., NR), an interleaving structure may be used for each of the downlink and uplink. For example, Q interleavings with indices 0 to Q–1 may be defined, where Q may be equal to 4, 6, 8, 10, or some other value. Each interleaving may include time slots spaced apart by Q frames. Specifically, interleaving q may include time slots q, q+Q, q+2Q, etc., where q∈{0,…,Q–1}.

[0071] The UE may be located within the coverage of multiple BSs. One of these BSs may be selected to serve the UE. The serving BS may be selected based at least in part on various criteria such as received signal strength, received signal quality, path loss, etc. The received signal quality may be quantified by a signal-to-noise-and-interference ratio (SINR), or a reference signal received quality (RSRQ), or some other metric. The UE may operate in a strong interference scenario, in which the UE may observe high interference from one or more interfering BSs.

[0072] Although aspects of the examples described herein may be associated with NR or 5G technology, aspects of the present disclosure may be applicable to other wireless communication systems. NR may refer to a radio configured to operate according to a new air interface (e.g., an air interface different from that based on orthogonal frequency division multiple access (OFDMA)) or a fixed transport layer (e.g., different from the Internet Protocol (IP)). In various aspects, NR may utilize OFDM with CP (referred to herein as cyclic prefix OFDM or CP-OFDM) and / or SC-FDM on the uplink, may utilize CP-OFDM on the downlink and include support for half-duplex operation using time division duplex (TDD). In various aspects, NR may, for example, utilize OFDM with CP (referred to herein as CP-OFDM) and / or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) on the uplink, may utilize CP-OFDM on the downlink and include support for half-duplex operation using TDD. NR may include enhanced mobile broadband (eMBB) services targeting wide bandwidth (e.g., 80 megahertz (MHz) and above), millimeter wave (mmW) targeting high carrier frequencies (e.g., 60 gigahertz (GHz)), massive MTC (mMTC) targeting non-backward compatible MTC technologies, and / or mission critical services targeting ultra-reliable low latency communications (URLLC) services.

[0073] As indicated above, Figure 3 are provided as examples. Other examples may differ from those described in Figure 3 Examples described.

[0074] The UE may have multiple transmit antennas and / or transmit chains, which may allow the UE to transmit multiple uplink communications and / or channels (e.g., channels (e.g., physical uplink shared channel (PUSCH) communications, physical uplink control channel (PUCCH) communications, sounding reference signal (SRS), physical random access channel (PRACH) communications, etc.)) to the BS on different antennas using spatial multiplexing.

[0075] Although this may provide the UE with the ability to transmit multiple uplink communications and / or channels concurrently (e.g., overlapping on at least one resource block), this ability may be constrained. For example, the UE may be limited to a maximum amount of transmit power (e.g., a maximum transmit power) that the UE may use at a given time, such that the UE may not use more than the maximum transmit power when transmitting multiple uplink communications and / or channels.

[0076] In some cases, when the multiple uplink communications are scheduled to overlap on at least one resource block, the total scheduled transmit power of the multiple uplink communications and / or channels may exceed the maximum transmit power of the UE. For example, a first scheduled transmit power of a first uplink communication and / or channel and a second scheduled transmit power of a second uplink communication and / or channel may exceed the maximum transmit power of the UE on overlapping resource blocks. As a result, the UE may be unable to transmit one or more of the multiple uplink communications and / or channels at a scheduled transmit power based at least in part on the total scheduled transmit power of the multiple uplink communications and / or channels that exceeds the maximum transmit power.

[0077] Some techniques and apparatus described herein provide power control for spatial multiplexing of multiple uplink communications and / or channels. For example, some techniques and apparatus described herein provide a UE that can determine a manner to allocate power to multiple uplink communications and / or channels that are scheduled to overlap on at least one resource block, such as when the scheduled transmit power of the multiple uplink communications and / or channels exceeds the maximum transmit power of the UE on overlapping resource blocks, the scheduled transmit power of the uplink communications and / or channels exceeds the amount of transmit power available on the overlapping resource blocks based at least in part on another amount of transmit power used for a previously initiated uplink communication and / or channel, and the like.

[0078] Therefore, some techniques and devices described herein provide a UE that can perform power control on multiple spatially multiplexed uplink communications and / or channels when the UE is unable to transmit the multiple spatially multiplexed uplink communications and / or channels according to the corresponding scheduled transmit powers of the multiple spatially multiplexed uplink communications and / or channels. This improves the management efficiency of the power resources of the UE. In addition, this reduces or eliminates the need for the UE and BS that have scheduled the multiple uplink communications and / or channels to communicate to reschedule the multiple uplink communications and / or channels due to insufficient power headroom, thereby saving the computing resources of the UE and the BS, saving the network resources (e.g., time / frequency resources) of the connection between the UE and the BS, and the like. In addition, this provides a predictable and efficient method for the UE to allocate power resources to multiple uplink communications and / or channels, thereby saving processing resources associated with determining the allocation of power resources of the UE, reducing or eliminating delays associated with transmitting multiple uplink communications and / or channels due to the scheduled transmit power exceeding the maximum transmit power of the UE, and the like.

[0079] Figure 4 4 is a diagram illustrating an example 400 of power control of uplink channel spatial multiplexing based at least in part on a priority rule set in accordance with various aspects of the present disclosure. Figure 4 As shown in , example 400 includes a BS and a UE.

[0080] As indicated by reference numeral 410, the BS may transmit and the UE may receive power control information identifying a total scheduled transmit power for a plurality of uplink communications. For example, the BS may transmit and the UE may receive information associated with downlink control information (DCI), a transmission power control (TPC) command, an uplink scheduling grant, and the like. In some implementations, the BS may transmit and the UE may receive scheduling information associated with the power control information identifying the scheduling of the plurality of uplink communications (e.g., identifying OFDM symbols on which the plurality of uplink communications will be transmitted). In some implementations, such as when the plurality of uplink communications are associated with different uplink channels, the power control information may identify a total scheduled transmit power for the plurality of uplink channels. In some implementations, such as when the plurality of uplink communications are associated with different uplink channels, the BS may transmit and the UE may receive scheduling information identifying the scheduling of the plurality of uplink channels (e.g., identifying OFDM symbols on which the plurality of channels will be transmitted). In some implementations, the multiple uplink channels and / or channels associated with the multiple uplink communications may be scheduled to be transmitted via different antennas associated with the UE and / or on a single component carrier.

[0081] In some implementations, the power control information may identify respective scheduled transmit powers of the multiple uplink communications (e.g., a first transmit power of a first uplink communication, a second transmit power of a second uplink communication, etc.). In some implementations, the uplink communications may include PRACH communications, PUCCH communications, PUSCH communications, SRS, etc. In some implementations, the multiple uplink communications may be associated with the same channel or different channels (e.g., may include multiple PRACH communications, may include PUCCH communications and SRS, etc.).

[0082] In some implementations, the UE may determine whether the multiple uplink communications are scheduled to overlap. For example, the UE may determine whether the first uplink communication and the second uplink communication are scheduled to start contemporaneously, scheduled to have staggered start times so that a portion of the first uplink communication and a portion of the second uplink communication occur contemporaneously, etc. Additionally or alternatively, and as another example, the UE may determine whether the multiple uplink communications and / or channels associated with the multiple uplink communications are scheduled to start on the same OFDM symbol, overlap on at least one OFDM symbol, be transmitted contemporaneously, etc. In some implementations, the UE may determine that the multiple uplink communications overlap on at least one OFDM symbol based at least in part on starting contemporaneously, being scheduled so that respective portions of the multiple uplink communications are transmitted contemporaneously, etc.

[0083] In some implementations, the UE may determine whether the total scheduled transmit power of the multiple uplink communications meets a threshold. For example, if the UE determines that the multiple uplink communications are scheduled to overlap on at least one OFDM symbol, the UE may determine whether the total scheduled transmit power of the multiple uplink communications exceeds the maximum transmit power of the UE. For example, if the multiple uplink communications are not scheduled to overlap on at least one OFDM symbol, the UE may not perform this determination. If the multiple uplink communications are not scheduled to overlap on at least one OFDM symbol, this saves the UE's processing resources by reducing or eliminating the need for the UE to perform this determination. In some implementations, if the UE determines that the total scheduled transmit power of the multiple uplink communications does not meet the UE's maximum transmit power, the UE may determine the corresponding transmit power of the multiple uplink communications, wherein the determined total corresponding transmit power of the multiple uplink communications meets the threshold. In some aspects, if the UE determines that the total scheduled transmit power of the multiple uplink communications meets the UE's maximum transmit power, the UE may transmit the multiple uplink communications using the corresponding scheduled transmit power of the multiple uplink communications. In some aspects, the above determinations may be combined into a single determination.

[0084] As indicated by reference numeral 420, the UE may determine the respective transmit powers of the plurality of uplink communications based at least in part on the priority rule set, and may determine whether to further reduce the transmit power of one of the plurality of uplink communications. For example, the UE may determine a first respective transmit power of a first uplink communication, a second respective transmit power of a second uplink communication, and so on. In some implementations, the UE may determine the respective transmit powers of the plurality of uplink communications after determining that the total scheduled transmit power of the plurality of uplink communications does not meet a threshold and / or after determining that the plurality of uplink communications are scheduled to overlap on at least one OFDM symbol. This reduces or eliminates the need for the UE to perform this determination when the total scheduled transmit power of the plurality of uplink communications meets a threshold and / or when the plurality of uplink communications are not scheduled to overlap on the at least one OFDM symbol.

[0085] In some implementations, a priority rule set may identify respective priorities of different uplink communications. For example, a priority rule set may be identified or used to determine an amount of transmit power to be allocated to different uplink communications based at least in part on the respective priorities of the different uplink communications. In some implementations, the respective priorities may be associated with an allocation of transmit power (e.g., an uplink communication associated with a higher respective priority relative to another uplink communication will take precedence over the other uplink communication with respect to the allocation of transmit power). For example, a UE may determine a first respective transmit power for a first uplink communication based at least in part on the first uplink communication being associated with the first priority, and may determine a second respective transmit power for a second uplink communication based at least in part on the second uplink communication being associated with the second priority (e.g., where the first priority is higher relative to the second priority). Continuing with the previous example, the UE may determine, at least in part based on the fact that the corresponding priority of the first uplink communication is higher than the corresponding priority of the second uplink communication, that the first corresponding transmit power of the first uplink communication will be the scheduled transmit power of the first uplink communication, and the second corresponding transmit power of the second uplink communication will be the difference between the UE's maximum transmit power and the first corresponding transmit power (e.g., the UE may allocate any available remaining transmit power to the second uplink communication after allocating the first corresponding transmit power, even if the scheduled transmit power of the second uplink communication is greater than the difference).

[0086] In some implementations, as a specific example, the priority rule set may identify PRACH communications associated with a primary cell (Pcell) as having the highest priority relative to other uplink communications, may identify PUCCH communications or PUSCH communications associated with an ultra-reliable low latency communication (URLLC) service as having the second highest priority, may identify PUCCH communications or PUSCH communications associated with an enhanced mobile broadband (eMBB) service as having the third highest priority, may identify SRS or PRACH communications associated with a cell other than the Pcell as having the fourth highest priority, and so on. In some implementations, the priority rule set may identify sub-priorities within different priorities. For example, for PUCCH communications associated with a URLLC service or an eMBB service, the priority rule set may identify the highest priority for PUCCH communications associated with a scheduling request (SR), an acknowledgment (ACK), a negative acknowledgment (NACK), etc., may identify the second highest priority for PUCCH communications associated with channel state information (CSI), and so on. Additionally or alternatively, and as another example with respect to PUSCH communications associated with a URLLC service or an eMBB service, PUSCH communications associated with ACK or NACK may be associated with the highest priority relative to PUSCH communications associated with CSI, and PUSCH communications associated with CSI may be associated with a higher priority relative to PUSCH communications not associated with ACK, NACK, or CSI. Additionally or alternatively, and as another example with respect to PUCCH and PUSCH communications associated with the same service type (e.g., a URLLC service or an eMBB service), PUCCH communications associated with SR or ACK or NACK may have the same priority as PUSCH communications associated with ACK or NACK, and PUCCH communications associated with CSI may have the same priority as PUSCH communications associated with CSI.

[0087] In some implementations, the UE may determine to allocate available transmit power to the multiple uplink communications in order from highest priority to lowest priority. For example, the UE may determine to first allocate transmit power to a first uplink communication having the highest relative priority (e.g., may attempt to allocate the scheduled transmit power to the first uplink communication), may determine to then allocate available transmit power to a second uplink communication associated with the second highest priority (e.g., may attempt to allocate the scheduled transmit power to the second uplink communication, or may attempt to allocate any remaining transmit power of the UE's maximum transmit power to the second uplink communication if the scheduled transmit power of the second uplink communication is greater than the remaining transmit power), and so on. In this manner, the UE prioritizes transmit power allocations to the individual uplink communications based at least in part on the priorities of the channels associated with the multiple uplink communications.

[0088] In some implementations, if the multiple uplink communications are associated with the same priority (e.g., based at least in part on being associated with the same channel, based at least in part on being duplicate communications, etc.), the UE may allocate available transmit power to the multiple uplink communications accordingly based on the scheduled transmit powers of the multiple uplink communications. For example, if two uplink communications are scheduled to start on the same OFDM symbol and are associated with the same priority, and if the scheduled transmit power of the first uplink communication is P1 and the scheduled transmit power of the second uplink communication is P2 and P1+P2 is greater than the maximum transmit power P of the UE. max , the UE may determine to allocate P to the first uplink communication max *P1 / (P1+P2) power, and allocates the remaining available transmit power to the second uplink communication.

[0089] In some implementations, the priority rule set may be based at least in part on a temporal aspect of the multiple uplink communications. For example, the priority rule set may identify a higher relative priority for an uplink communication that starts earlier than another uplink communication. As a specific example, the UE may determine a higher priority of a first uplink communication relative to a second uplink communication based at least in part on the first uplink communication being scheduled with an earlier start OFDM symbol than a start OFDM symbol of the second uplink communication, even if the second uplink communication is associated with a channel that has a higher priority relative to another channel associated with the first uplink communication. In this case, the UE will allocate a scheduled transmit power to the first uplink communication upon initiating the first uplink communication, and will allocate any remaining available transmit power (up to the scheduled transmit power of the second uplink communication) to the second uplink communication based at least in part on the second uplink communication being initiated after the first uplink communication. This reduces or eliminates the need for the UE to re-determine the transmit power of the uplink communications when the multiple uplink communications are initiated at different times. Additionally or alternatively, this reduces or eliminates the need for the UE to consider potential future uplink communications when determining the power of current uplink communications.

[0090] In some implementations, the UE may determine whether a particular combination of uplink communications is scheduled to be transmitted. For example, the UE may determine whether a particular combination of respective channels associated with the plurality of uplink communications is scheduled to be transmitted by the UE. As a specific example, the UE may determine whether the plurality of uplink communications includes an SRS and at least one of a PUSCH communication or a PUCCH communication.

[0091] In some implementations, if the UE determines that the multiple uplink communications include a particular combination of uplink communications, the UE may determine to modify the transmit power of an uplink communication in the multiple uplink communications (or modify the scheduled transmit power if the uplink communication is to be transmitted using the scheduled transmit power). For example, the UE may determine to reduce the transmit power of one of the multiple uplink communications by a threshold amount (e.g., may determine that one of the multiple uplink communications requires power reduction). As a specific example, the UE may determine to reduce the transmit power of the SRS by a first threshold amount (e.g., may determine to reduce the corresponding transmit power of the SRS so that the corresponding transmit power of the PUSCH communication and / or PUCCH communication exceeds the corresponding transmit power of the SRS by a second threshold amount) based at least in part on the transmit power of the PUSCH communication and / or PUCCH communication included in the multiple uplink communications.

[0092] In some implementations, the UE may determine an amount to modify the transmit power based at least in part on a number of overlapping resource elements between the multiple uplink communications. For example, different percentages, numbers, etc. of overlapping resource elements (e.g., except for a set of resource elements associated with a demodulation reference signal (DMRS), a phase tracking reference signal (PTRS), etc.) may indicate different amounts to modify the transmit power. Continuing with the previous example, a higher percentage, number, etc. of overlapping resource elements may indicate a larger reduction to one or more of the multiple uplink communications.

[0093] Additionally or alternatively, when the multiple communications include PUSCH communications, the UE may determine the amount to modify the transmit power based at least in part on a modulation and coding scheme (MCS) index and / or the number of transmission layers associated with the PUSCH communications. For example, different MCSs and / or different transmission layers may be associated with different interference susceptibilities, and the corresponding transmit powers may need to be adjusted to account for the different susceptibilities (e.g., an uplink communication associated with an MCS and / or transmission layer associated with a higher relative susceptibility may need to be allocated more transmit power than another uplink communication associated with an MCS and / or transmission layer associated with a lower relative susceptibility to compensate for the higher relative susceptibility). Additionally or alternatively, when the multiple communications include PUCCH communications, the UE may determine the amount to modify the transmit power based at least in part on a PUCCH format or uplink control information (UCI) type associated with the PUCCH communications. For example, different PUCCH formats and / or different UCI types may be associated with different operations, may be associated with transmitting different amounts of information, and so on. Continuing with the previous example, some PUCCH formats and / or UCI types may have a higher priority relative to other PUCCH formats and / or UCI types based at least in part on these factors, and as a result, may be allocated more transmit power to ensure full transmission, to compensate for interference, etc.

[0094] In some implementations, the UE may use a rule set to determine whether to modify the transmit power of uplink communications, whether to maintain the transmit power of uplink communications, etc. For example, the rule set may identify a specific combination of uplink communications that triggers a modification of the transmit power and a specific manner in which to modify the transmit power for the specific combination of uplink communications.

[0095] In some implementations, when determining to modify the transmit power of the uplink communication, the UE may determine to modify the transmit power only on a set of resource blocks where the multiple uplink communications overlap with each other, may determine to modify the transmit power on all resource blocks associated with the uplink communication, may determine to modify the transmit power on a set of resource blocks where the uplink communication and another uplink communication overlap and on a portion of a non-overlapping set of resource blocks, etc. Additionally or alternatively, the UE may determine to modify the transmit power of the uplink transmission and / or the amount to modify the corresponding transmit power based at least in part on a radio resource control (RRC) configuration from the BS. For example, the RRC may include an instruction set for the UE to reduce the transmit power, may include information identifying the amount to modify the corresponding transmit power, may include information indicating whether the UE should reduce the transmit power of the uplink communication only on resource blocks that overlap with another uplink communication, or reduce the transmit power of the uplink communication on all resource blocks associated with the uplink communication, etc. Additionally or alternatively, the UE may determine to modify the transmit power and / or the amount by which to modify the corresponding transmit power based at least in part on the number of overlapping resource blocks relative to the number of non-overlapping resource blocks. For example, a higher relative number of overlapping resource blocks relative to the number of non-overlapping resource blocks may indicate a larger modification in transmit power.

[0096] In this manner, the UE may determine to modify the transmit power of uplink communications and / or an amount to modify the corresponding uplink transmit power based at least in part on a semi-static configuration from the BS, a dynamic signal from the BS, a determination by the UE, etc.

[0097] As indicated by reference numeral 430, the UE may transmit the plurality of uplink communications. For example, the UE may transmit the plurality of uplink communications using respective transmit powers (e.g., a first uplink communication may be transmitted using a first respective transmit power, and a second uplink communication may be transmitted using a second respective transmit power). In some implementations, the UE may transmit the different uplink communications via different antennas associated with the UE and / or on a single component carrier. For example, the UE may transmit a first uplink transmission via a first antenna associated with the UE, and may transmit a second uplink communication via a second antenna associated with the UE.

[0098] Although some implementations are described as being performed by a UE, these implementations may also be performed by a BS. For example, the BS may determine the transmit power of multiple uplink communications in the manner described herein, and may transmit information identifying the respective transmit powers of the multiple uplink communications to the UE, so that the UE can transmit the multiple uplink communications at the respective transmit powers.

[0099] As indicated above, Figure 4are provided as examples. Other examples may differ from the reference Figure 4 Examples described.

[0100] Figure 5 is a diagram illustrating an example 500 of power control of uplink channel spatial multiplexing based at least in part on a priority rule set in accordance with various aspects of the present disclosure. Figure 5 As shown in , example 500 may include a UE.

[0101] As indicated by reference numeral 510, the UE may receive power control information identifying a total scheduled transmit power for a plurality of uplink communications. For example, the UE may receive the power control information from the BS in association with a TPC command, etc., in a manner similar to that described elsewhere herein. As indicated by reference numeral 520, the UE may determine whether the total scheduled transmit power satisfies a maximum transmit power of the UE. For example, the UE may determine whether the total scheduled transmit power for the plurality of uplink transmissions exceeds the maximum transmit power of the UE, in a manner similar to that described elsewhere herein.

[0102] As indicated by reference numeral 530, if the UE determines that the total scheduled transmit power does not satisfy the maximum transmit power of the UE (reference numeral 520—No), the UE may determine the respective transmit powers of the multiple uplink communications based at least in part on the priority rule set (e.g., when the total scheduled transmit power is greater than the maximum transmit power of the UE). For example, the UE may determine the transmit power of the uplink communications based at least in part on the priority rule set identifying the respective priorities of the multiple uplink communications for allocating available transmit power in a manner similar to that described elsewhere herein. As indicated by reference numeral 540, the UE may determine whether the multiple uplink communications include SRS and one of PUSCH communications or PUCCH communications. For example, the UE may perform this determination after determining that the total scheduled transmit power satisfies the maximum transmit power (reference numeral 520—Yes), after determining the respective transmit powers of the multiple uplink communications (reference numeral 530), and the like in a manner similar to that described elsewhere herein.

[0103] As indicated by reference numeral 550, the UE may determine an amount of power reduction to be applied to the SRS channel after determining that the plurality of uplink communications include SRS and one of a PUSCH communication or a PUCCH communication (reference numeral 540 —Yes). For example, the UE may make this determination in a manner similar to that described elsewhere herein.

[0104] The UE may transmit the multiple uplink communications as indicated by reference numerals 560 and 570. For example, the UE may transmit the multiple uplink communications at the corresponding scheduled transmit power when the total scheduled transmit power satisfies the maximum transmit power of the UE; transmit the multiple uplink communications at the corresponding transmit power determined by the UE when the total scheduled transmit power of the multiple uplink communications does not satisfy the maximum transmit power of the UE; transmit the multiple uplink communications at the reduced corresponding scheduled transmit power or at the reduced corresponding transmit power when the multiple uplink communications include SRS and at least one of PUSCH communication and PUCCH communication, and so on.

[0105] As indicated above, Figure 5 are provided as examples. Other examples may differ from those described in Figure 5 For example, the BS may perform a reference Figure 5 Some implementations described herein may communicate to a UE information identifying a transmit power that the UE is to use to transmit multiple uplink communications.

[0106] Figure 6 6 is a diagram illustrating an example 600 of power control of uplink channel spatial multiplexing based at least in part on a priority rule set in accordance with various aspects of the present disclosure. Figure 6 As shown in , example 600 includes a UE configured with multiple antennas (eg, antenna 1 and antenna 2).

[0107] As indicated by reference numeral 610, the UE may transmit a first uplink communication (e.g., associated with a first channel) via antenna 1. In some implementations, the UE may transmit the first uplink communication at a first transmit power (e.g., P1). As indicated by reference numeral 620, the UE may transmit a second uplink communication (e.g., associated with a second channel different from the first channel) via antenna 2. In some implementations, the UE may transmit the second uplink communication at a second transmit power (e.g., P2).

[0108] In some implementations, the combined first transmit power and the second transmit power may be equal to or less than the maximum transmit power of the UE. For example, P1 and P2 may be scheduled transmit powers, or may be based at least in part on the relative respective priorities of the first uplink communication and the second uplink communication. In some implementations, the UE may transmit the first uplink communication at a predetermined interval and transmit the second uplink communication at a predetermined interval. Figure 4 and Figure 5 P1 and P2 are determined in the same or similar manner as described.

[0109] As indicated above, Figure 6 are provided as examples. Other examples may differ from those described in Figure 6 Examples described.

[0110] Figure 7 is a diagram illustrating an example 700 of power control of uplink channel spatial multiplexing based at least in part on a priority rule set in accordance with various aspects of the present disclosure. Figure 7 Examples are shown of prioritizing different uplink communications based at least in part on temporal aspects of the different uplink communications.

[0111] As indicated by reference numeral 710, the UE may begin transmission of a first uplink communication at time 0. In some implementations, the first uplink communication may not overlap with any other uplink communication when the first uplink communication is started. Based at least in part on this, the UE may transmit the first uplink communication at a scheduled transmit power (e.g., P1) of the first uplink communication. As indicated by reference numeral 720, the UE may initiate transmission of a second uplink communication at time 1 while the UE is still transmitting the first uplink communication (e.g., the first uplink communication and the second uplink communication may overlap on at least one OFDM symbol). Based at least in part on this, the UE may transmit the second uplink transmission using a transmit power less than or equal to the UE's maximum transmit power (e.g., Pmax) minus P1 (e.g., using a transmit power that does not exceed the difference between Pmax and P1). For example, if the scheduled transmit power of the second uplink communication is greater than this difference, the UE may transmit the second uplink communication at a transmit power equal to this difference. Conversely, if the scheduled transmit power of the second uplink communication is less than the difference, the UE may transmit the second uplink communication at the scheduled transmit power of the second uplink communication. In some implementations, the UE may prioritize the first uplink communication and the second uplink communication in this manner, regardless of whether a channel associated with the second uplink communication has a higher priority relative to another channel associated with the first uplink communication.

[0112] In some aspects, the UE may perform power control with a granularity of each symbol. For example, the UE may perform power control per OFDM symbol. In this case, the UE may use the scheduled power levels (e.g., P1 and P2) on the non-overlapping portions of these communications, and may use the determined power based at least in part on the above-mentioned priority rules on the overlapping portions of these communications. In the case of example 700, the UE may use P1 between time 0 and time 1, and may determine the transmit power after time 1 according to the priority levels of the first uplink communication and the second uplink communication. If the first uplink communication is associated with a higher priority, the UE may transmit the first uplink communication at P1 and transmit the second uplink communication at Pmax-P1. If the second uplink communication is associated with a higher priority, the UE may transmit the first uplink communication at Pmax-P2 and transmit the second uplink communication at P2.

[0113] In some aspects, as mentioned above Figure 4-7 In addition or alternative to the described techniques, the UE may discard the low priority channel. For a UE with two transmit antennas, the UE may be able to transmit at a maximum power of Pmax / 2 on each antenna, thereby achieving the maximum power Pmax from the two antennas. For example, when the transmit power of the high priority channel is higher than Pmax / 2, the UE may discard the low priority channel. In this case, the UE may transmit the high priority channel using the two antennas of the UE with a total power equal to the scheduled power of the high priority channel. If the scheduled power of the low priority channel exceeds Pmax / 2, and the scheduled power of the high priority channel is lower than Pmax / 2, the UE may cap the power of the low priority channel at Pmax / 2.

[0114] As an example, assume that the UE has a total power P_max and four antennas, where channel 1 is transmitted on 3 antennas and channel 2 is transmitted on 1 antenna. Then, the maximum power of channel 1 may be 3 / 4*P_max, and the maximum power of channel 2 may be P_max / 4.

[0115] (For example, in the case of N TX antennas, each antenna has a maximum power of P_max / N)

[0116] As indicated above, Figure 7 are provided as examples. Other examples may differ from those described in Figure 7 Examples described.

[0117] Figure 8 8 is a diagram illustrating an example 800 of power control of uplink channel spatial multiplexing based at least in part on a configured number of channels and / or a scheduled number of channels in accordance with various aspects of the present disclosure. Figure 8 As shown in , example 800 includes a BS and a UE.

[0118] As indicated by reference numeral 810, the BS may transmit, and the UE may receive, power control information identifying a total scheduled transmit power for multiple uplink communications. For example, the UE may receive the power control information in a manner similar to that described elsewhere herein.

[0119] As indicated by reference numeral 820, the UE may determine respective transmit powers of the plurality of uplink communications based at least in part on the number of channels associated with the plurality of uplink communications, and may determine whether to further reduce the transmit power of one of the plurality of uplink communications. For example, the UE may determine the transmit power of the uplink communication based at least in part on the number of channels associated with the plurality of uplink communications after receiving the power control information.

[0120] In some implementations, the UE may determine the respective transmit powers of the multiple uplink communications based at least in part on the number of channels that the UE is configured to use. For example, the UE may determine the respective transmit powers of the multiple uplink communications by dividing the maximum transmit power of the UE by the number of channels that the UE is configured to use. As a specific example, if the UE is configured to use at most four channels, the UE may determine that each channel may be allocated to at most one-fourth of the UE's maximum transmit power, regardless of whether the UE is scheduled to use all four channels simultaneously, regardless of whether the total scheduled transmit power of the multiple uplink communications meets the maximum transmit power of the UE, regardless of whether the transmit power of the multiple uplink communications is equal to one-fourth of the UE's maximum transmit power, and so on. As another specific example, if the UE is configured to use at most three channels, the UE may determine that each channel may be allocated to at most one-third of the UE's maximum transmit power.

[0121] In some implementations, the UE may use this determination to determine the maximum transmit power for uplink communications. For example, and referring to the previous example, if the uplink communications are scheduled to use less than one-quarter of the UE's maximum transmit power, the UE may determine that the scheduled transmit power is to be used for the uplink communications. This provides the UE with an efficient method of determining the transmit power for the multiple uplink communications, thereby saving processing resources of the UE associated with determining the transmit power and / or reducing the amount of time required to determine the transmit power.

[0122] In some implementations, the UE may determine the respective transmit powers of the multiple uplink communications based at least in part on the number of channels that the UE is scheduled to use. For example, the UE may determine the respective transmit powers of the multiple uplink communications by dividing the maximum transmit power of the UE by the number of channels that the UE is scheduled to use. As a specific example, if the UE is scheduled to transmit two uplink channels concurrently (e.g., when the UE is capable of transmitting more than two channels concurrently), the UE may determine that each of the two channels may be allocated at most half of the UE's maximum transmit power (e.g., when the scheduled transmit power of the channel is less than half of the maximum transmit power, a power less than half of the maximum transmit power may be used; when the scheduled transmit power is greater than half of the maximum transmit power, half of the maximum transmit power may be used, etc.), regardless of whether the UE is configured to use more than two channels to transmit the multiple uplink communications, regardless of whether the respective scheduled transmit powers of the multiple uplink communications are equal to half of the UE's maximum transmit power, regardless of whether the total scheduled transmit power of the multiple uplink communications satisfies the UE's maximum transmit power, etc. As another specific example, if a UE is scheduled to use three channels, the UE may determine that each channel will be allocated at most one-third of the UE's maximum transmit power.

[0123] In some implementations, the UE may use this determination to determine the maximum transmit power for uplink communications. For example, and referring to the previous example, if uplink communications are scheduled to use less than half of the UE's maximum transmit power, the UE may determine to use the scheduled transmit power for uplink communications.

[0124] In some implementations, the UE may determine whether the multiple uplink communications are scheduled to overlap on at least one OFDM symbol after receiving the power control information and before determining the corresponding transmit powers in a manner similar to that described elsewhere herein. For example, the UE may determine whether the first uplink communication and the second uplink communication are scheduled to start concurrently, are scheduled to have staggered start times so that a portion of the first uplink communication and a portion of the second uplink communication occur concurrently, etc. before determining the corresponding transmit powers of the multiple uplink communications. In some implementations, if the multiple uplink communications do not overlap on at least one resource block, the UE may not determine the corresponding transmit powers, thereby saving processing resources of the UE.

[0125] In some implementations, if the first uplink communication is scheduled to start before the second uplink communication, the UE may determine that the scheduled transmit power of the first uplink communication will be used to transmit the first uplink communication, and determine that any remaining transmit power will be used to transmit the second uplink communication, in a manner similar to that described elsewhere herein. This reduces or eliminates the need for the UE to account for future uplink transmissions when determining the amount of transmit power to use for uplink transmissions.

[0126] In some implementations, the UE may determine whether a total scheduled transmit power of the multiple uplink communications meets a threshold before determining the corresponding transmit power in a manner similar to that described elsewhere herein. For example, before determining the corresponding transmit power of the multiple uplink communications, the UE may determine whether the total scheduled transmit power of the multiple uplink communications exceeds the maximum transmit power of the UE during the time when the multiple uplink communications overlap on the same OFDM symbol. In some implementations, if the total scheduled power of the multiple uplink transmissions does not overlap on at least one resource block, the UE may not determine the corresponding transmit power, thereby saving processing resources of the UE.

[0127] In some implementations, the UE may determine that the transmit power is to be modified in a manner similar to that described elsewhere herein and / or may determine the amount to modify the transmit power after determining the corresponding transmit power in a manner similar to that described elsewhere herein. For example, the UE may determine that the transmit power is to be modified based at least in part on the multiple uplink communications including SRS and one of PUSCH communications or PUCCH communications. Additionally or alternatively, and as another example, the UE may determine the amount to modify the transmit power based at least in part on the number of overlapping resource elements between the multiple uplink communications, at least in part on the MCS index and / or the number of transmission layers associated with the PUSCH communication (e.g., when the multiple uplink communications include PUSCH communications), at least in part on the PUCCH format and / or UCI type associated with the PUCCH communication (e.g., when the multiple uplink communications include PUCCH communications), etc.

[0128] As indicated by reference numeral 830, the UE may transmit the multiple uplink communications. For example, the UE may transmit the multiple uplink communications on the same OFDM symbol using a transmit power determined by the UE for the uplink communications. Additionally or alternatively, and as another example, the UE may transmit the multiple uplink communications at a scheduled transmit power, such as when a total scheduled transmit power of the multiple uplink communications does not satisfy a maximum transmit power of the UE. Additionally or alternatively, the UE may transmit the multiple uplink communications via different antennas and on a single component carrier.

[0129] In some aspects, the UE may signal the capabilities to the BS. For example, the UE may signal the power amplifier capabilities indicating the corresponding maximum transmit power of each power amplifier of the UE. If each power amplifier is capable of transmitting at Pmax, the UE may use any of the techniques described herein (e.g., priority-based techniques, hard power splitting-based techniques, and channel drop techniques) for power management. If each power amplifier is only capable of transmitting at power Pmax / N, where N is the number of transmit antennas or antenna ports associated with the UE, the UE may only be able to support hard power splitting-based techniques or channel drop techniques. In this case, the UE can transmit at Pmax only when all power amplifiers are transmitting at Pmax / N. As another example, the UE may transmit information identifying which of the techniques described herein (e.g., priority-based techniques, hard power splitting-based techniques, and channel drop techniques) are supported by the UE. In these cases, the BS may configure the UE to use one or more techniques described herein based at least in part on the capabilities of the UE (e.g., using RRC signaling, etc.).

[0130] Although some implementations are described as being performed by a UE, these implementations may also be performed by a BS. For example, the BS may determine the respective transmit powers of a plurality of uplink communications in the manner described herein, and may transmit information identifying the respective transmit powers of the plurality of uplink communications to the UE, so that the UE can transmit the plurality of uplink communications at the respective transmit powers.

[0131] As indicated above, Figure 8 are provided as examples. Other examples may differ from those described in Figure 8 Examples described.

[0132] Fig. 9 9 is a diagram illustrating an example of power control of uplink channel spatial multiplexing based at least in part on a configured number of channels and / or a scheduled number of channels in accordance with various aspects of the present disclosure. Fig. 9 As shown in , example 900 may include a UE.

[0133] As indicated by reference numeral 910, the UE may receive power control information identifying a total scheduled transmit power for a plurality of uplink communications. For example, the UE may receive power control information from the BS in association with a TPC command in a manner similar to that described elsewhere herein, etc. As indicated by reference numeral 920, the UE may determine the respective transmit powers of the plurality of uplink communications based at least in part on the number of channels associated with the plurality of uplink communications. For example, the UE may determine the respective transmit powers based at least in part on the number of channels that the UE is configured to use and / or based at least in part on the number of channels that the UE is scheduled to use in a manner similar to that described elsewhere herein. As indicated by reference numeral 930, the UE may determine whether the plurality of uplink communications include SRS and one of a PUSCH communication or a PUCCH communication. For example, the UE may perform this determination after determining the respective transmit powers of the plurality of uplink communications (reference numeral 920) in a manner similar to that described elsewhere herein.

[0134] As indicated by reference numeral 940, the UE may determine an amount of power reduction to be applied to the SRS channel after determining that the plurality of uplink communications include SRS and one of a PUSCH communication or a PUCCH communication (reference numeral 930 —Yes). For example, the UE may make this determination in a manner similar to that described elsewhere herein.

[0135] As indicated by reference numerals 950 and 960, the UE may transmit a plurality of uplink communications. For example, the UE may transmit the plurality of uplink communications at a respective scheduled transmit power when the total scheduled transmit power does not satisfy the maximum transmit power of the UE; transmit the plurality of uplink communications at a reduced respective scheduled transmit power or at a reduced respective transmit power when the plurality of uplink communications include SRS and one of PUSCH communication and PUCCH communication (e.g., based at least in part on the determination performed with respect to reference numeral 940); transmit the plurality of uplink communications at a respective transmit power based at least in part on the number of channels the UE is configured to use and / or the number of channels the UE is scheduled to use when the UE determines that the plurality of uplink communications do not include SRS and one of PUSCH communication or PUCCH communication (reference numeral 930—No), and the like.

[0136] As indicated above, Fig. 9 are provided as examples. Other examples may differ from those described in Fig. 9 For example, the BS may perform a reference Fig. 9 Some implementations described herein may communicate to a UE information identifying respective transmit powers that the UE is to use to transmit multiple uplink communications.

[0137] Fig.10 1 is a diagram illustrating an example 1000 of power control of uplink channel spatial multiplexing based at least in part on a configured number of channels and / or a scheduled number of channels in accordance with various aspects of the present disclosure. Fig.10 As shown in , example 1000 includes a UE configured with multiple antennas (eg, antenna 1 and antenna 2).

[0138] As indicated by reference numeral 1010, the UE may transmit a first uplink communication (e.g., associated with a first channel) via antenna 1. In some implementations, the UE may transmit the first uplink communication at a first transmit power (e.g., P1). In some implementations, P1 may be equal to the scheduled transmit power of the first uplink communication or the maximum transmit power of the UE (e.g., Pmax) divided by the number of channels the UE is configured to use and / or the number of channels the UE is scheduled to use. As indicated by reference numeral 1020, the UE may transmit a second uplink communication (e.g., associated with a second channel different from the first channel) via antenna 2. In some implementations, the UE may transmit the second uplink communication at a second transmit power (e.g., P2). In some implementations, P2 may be equal to the scheduled transmit power of the second uplink communication or the maximum transmit power of the UE (e.g., Pmax) divided by the number of channels the UE is configured to use and / or the number of channels the UE is scheduled to use. In some implementations, the combined first transmit power and the second transmit power may be equal to or less than the maximum transmit power of the UE. For example, if the scheduled transmit power for the uplink transmission is less than the maximum transmit power of the UE divided by the number of channels, the UE may transmit the uplink transmission at the scheduled transmit power. In this manner, the UE may determine a maximum value for the uplink transmission based at least in part on the number of channels associated with the UE.

[0139] As indicated above, Fig.10 are provided as examples. Other examples may differ from those described in Fig.10 Examples described.

[0140] Fig.11 is a diagram illustrating an example process 1100, performed, for example, by a UE, in accordance with various aspects of the present disclosure. Example process 1100 is an example in which a UE (eg, UE 120) performs power control of uplink channel spatial multiplexing based at least in part on a set of priority rules.

[0141] As in Fig.11 As shown in , in some aspects, process 1100 may include determining that multiple uplink channels are to be transmitted concurrently on a component carrier via different antennas (block 1110). For example, a UE (e.g., UE 120 using controller / processor 280, etc.) may determine that multiple uplink channels are to be transmitted concurrently on a component carrier via different antennas, as described elsewhere herein.

[0142] As in Fig.11As further shown in FIG. 1 , in some aspects, process 1100 may include determining respective transmit powers for the plurality of uplink communications based at least in part on a determination that the plurality of uplink channels are to be transmitted contemporaneously on a component carrier via different antennas and based at least in part on a priority rule set identifying respective priorities of the plurality of uplink communications associated with the plurality of uplink channels, wherein a total transmit power to be used for the plurality of uplink communications satisfies a maximum transmit power of the UE (block 1120). For example, a UE (e.g., UE 120 using controller / processor 280, etc.) may determine respective transmit powers for the plurality of uplink communications based at least in part on a determination that the plurality of uplink channels are to be transmitted contemporaneously on a component carrier via different antennas and based at least in part on a priority rule set identifying respective priorities of the plurality of uplink communications associated with the plurality of uplink channels, as described elsewhere herein. In some aspects, the total transmit power to be used for the plurality of uplink communications may satisfy the maximum transmit power of the UE.

[0143] As in Fig.11 As further shown in FIG. 1 , in some aspects, process 1100 may include determining whether power reduction of the respective transmit powers of the plurality of uplink communications is required based at least in part on determining the respective transmit powers of the plurality of uplink communications (block 1130). For example, a UE (e.g., UE 120 using controller / processor 280, etc.) may determine whether power reduction of the respective transmit powers is required based at least in part on determining the respective transmit powers of the plurality of uplink communications, as described elsewhere herein.

[0144] As in Fig.11 As further shown in FIG. 1 , in some aspects, process 1100 may include transmitting the plurality of uplink communications using respective transmit powers based at least in part on determining whether power reduction is required (block 1140). For example, a UE (e.g., UE 120 using controller / processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, etc.) may transmit the plurality of uplink communications using respective transmit powers based at least in part on determining whether power reduction is required, as described elsewhere herein.

[0145] Process 1100 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0146] In some aspects, the UE may determine whether power reduction is needed based at least in part on: a first uplink communication of the plurality of uplink communications is a sounding reference signal (SRS), and a second uplink communication of the plurality of uplink communications is a physical uplink shared channel (PUSCH) communication or a physical uplink control channel (PUCCH) communication. In some aspects, the UE may determine to reduce a first corresponding transmit power of the first uplink communication by a first threshold amount based at least in part on the first uplink communication including the SRS and the second uplink communication including at least one of the PUSCH communication or the PUCCH communication, wherein the first threshold amount is based at least in part on a second corresponding transmit power of the second uplink communication.

[0147] In some aspects, the first threshold amount causes a second corresponding transmit power of the second uplink communication to exceed the first corresponding transmit power of the first uplink communication by at least a second threshold amount. In some aspects, the second threshold amount is based at least in part on: a number of overlapping resource elements between the first uplink communication and the second uplink communication relative to a total number of resource elements associated with the second uplink communication (excluding a set of resource elements associated with a demodulation reference signal (DMRS) or a phase tracking reference signal (PTRS); in the case where the second uplink communication includes PUSCH communication, a modulation and coding scheme (MCS) index or number of transmission layers associated with the PUSCH communication; or in the case where the second uplink communication includes PUCCH communication, a PUCCH format and uplink control information (UCI) type associated with the PUCCH communication. In some aspects, the UE may determine to reduce the first corresponding transmit power by a first threshold amount on an overlapping set of resource blocks associated with the first uplink communication and the second uplink communication, and not reduce the first corresponding transmit power for a non-overlapping set of resource blocks associated with the first uplink communication, or may determine to reduce the first corresponding transmit power by the first threshold amount on all resource blocks associated with the first uplink communication.

[0148] In some aspects, the UE may determine to reduce a first corresponding transmit power on all resource elements of a first channel associated with a first uplink communication, or to reduce the first corresponding transmit power on a set of overlapping resource blocks and not reduce the first corresponding transmit power for a set of non-overlapping resource blocks based at least in part on a radio resource control (RRC) configuration received from a base station (BS), or a number of overlapping resource elements between the first uplink communication and the second uplink communication relative to a total number of resource elements associated with the first uplink communication. In some aspects, the UE may determine to reduce the first corresponding transmit power by a first threshold amount based at least in part on at least one of a semi-static configuration from a base station (BS), a dynamic signal from the BS, or a determination made by the UE.

[0149] In some aspects, the UE may determine that a total scheduled or configured transmit power to be used for the multiple uplink communications does not satisfy the maximum transmit power of the UE. In some aspects, the UE may determine the scheduled transmit power as a first corresponding transmit power of the first uplink communication based at least in part on determining that a first uplink communication in the multiple uplink communications has a higher priority than a second uplink communication in the multiple uplink communications and based at least on determining that the total transmit power of the multiple uplink communications satisfies the maximum transmit power, and determine the difference between the maximum transmit power of the UE and the first corresponding transmit power as a second transmit power of the second uplink communication. In some aspects, the total scheduled transmit power includes a first scheduled transmit power of the first uplink communication in the multiple uplink communications and a second scheduled transmit power of the second uplink communication in the multiple uplink communications.

[0150] In some aspects, the UE may determine that the multiple uplink channels will overlap on at least one orthogonal frequency division multiplexing (OFDM) symbol; and may determine that the multiple uplink channels will be transmitted contemporaneously based at least in part on determining that the multiple uplink channels will overlap on the at least one OFDM symbol. In some aspects, the priority rule set identifies at least one of the following: a first corresponding priority associated with a physical random access channel (PRACH) communication associated with a primary cell (PCell), a second corresponding priority associated with a physical uplink control channel (PUCCH) communication or a physical uplink shared channel (PUSCH) communication associated with an ultra-reliable low latency communication (URLLC) service, a third corresponding priority associated with a PUCCH communication or a PUSCH communication associated with an enhanced mobile broadband (eMBB) service, or a fourth corresponding priority associated with a sounding reference signal (SRS) or PRACH communication associated with a cell other than the Pcell, wherein the first corresponding priority, the second corresponding priority, the third corresponding priority, and the fourth corresponding priority are different.

[0151] In some aspects, the priority rule set identifies a sub-priority set for uplink communications associated with a second corresponding priority, comprising: a first sub-priority associated with PUCCH communications associated with a scheduling request (SR), an acknowledgement (ACK), or a negative acknowledgement (NACK), or associated with a PUSCH communication associated with an ACK or a NACK; a second sub-priority associated with PUCCH communications with channel state information (CSI), or associated with PUSCH communications with CSI; or a third sub-priority associated with PUSCH communications not associated with ACK, NACK, or CSI, wherein the first sub-priority has the highest relative priority, the second sub-priority has the second highest relative priority, and the third sub-priority has the third highest relative priority.

[0152] In some aspects, the priority rule set identifies a sub-priority set for uplink communications associated with a third corresponding priority, comprising: a first sub-priority associated with PUCCH communications associated with a scheduling request (SR), an acknowledgement (ACK), or a negative acknowledgement (NACK), or associated with a PUSCH communication associated with an ACK or a NACK; a second sub-priority associated with PUCCH communications with channel state information (CSI), or associated with PUSCH communications with CSI; or a third sub-priority associated with PUSCH communications not associated with ACK, NACK, or CSI, wherein the first sub-priority has the highest relative priority, the second sub-priority has the second highest relative priority, and the third sub-priority has the third highest relative priority.

[0153] In some aspects, the priority rule set identifies that a first uplink communication has a higher priority than a second uplink communication based at least in part on a first uplink communication in the plurality of uplink communications starting earlier in time than a second uplink communication in the plurality of uplink communications, wherein a first corresponding transmit power of the first uplink communication is a first scheduled transmit power of the first uplink communication, and a second corresponding transmit power of the second uplink communication does not exceed a difference between a maximum transmit power and the first scheduled transmit power of the first uplink communication. In some aspects, the UE may transmit the first uplink communication via a first group of antennas associated with the UE based at least in part on determining a corresponding transmit power of the first uplink communication in the plurality of uplink communications and at least in part on determining whether power reduction is needed, and may transmit the second uplink communication via a second group of antennas associated with the UE based at least in part on determining a corresponding transmit power of the first uplink communication in the plurality of uplink communications and at least in part on determining whether power reduction is needed, wherein the first group of antennas is different from the second group of antennas.

[0154] In some aspects, the plurality of uplink communications include at least two of: a physical uplink control channel (PUCCH) communication, a physical uplink shared channel (PUSCH) communication, a sounding reference signal (SRS), or a physical random access channel (PRACH) communication.

[0155] although Fig.11 An example block diagram of process 1100 is shown, but in some aspects, process 1100 may include Fig.11 Additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in the process 1100. Additionally or alternatively, two or more blocks of the process 1100 may be executed in parallel.

[0156] Fig.12 is a diagram illustrating an example process 1200, performed, for example, by a BS, in accordance with various aspects of the present disclosure. Example process 1200 is an example in which a BS (eg, BS 110) performs power control of uplink channel spatial multiplexing based at least in part on a set of priority rules.

[0157] As in Fig.12 As shown in , in some aspects, process 1200 may include determining that multiple uplink channels are to be transmitted concurrently on a component carrier via different antennas (block 1210). For example, a BS (e.g., BS 110 using controller / processor 240, etc.) may determine that multiple uplink channels are to be transmitted concurrently on a component carrier via different antennas, as described elsewhere herein.

[0158] As in Fig.12 As further shown in , in some aspects, process 1200 may include determining respective transmit powers of the plurality of uplink communications based at least in part on determining that the plurality of uplink channels are to be transmitted contemporaneously on the component carrier via different antennas and based at least in part on a priority rule set identifying respective priorities of the plurality of uplink communications associated with the plurality of uplink channels, wherein a total transmit power to be used for the plurality of uplink communications satisfies a maximum transmit power of a user equipment (UE) (block 1220). For example, a BS (e.g., BS 110 using controller / processor 240, etc.) may determine respective transmit powers of the plurality of uplink communications based at least in part on determining that the plurality of uplink channels are to be transmitted contemporaneously on the component carrier via different antennas and based at least in part on a priority rule set identifying respective priorities of the plurality of uplink communications associated with the plurality of uplink channels, as described elsewhere herein. In some aspects, the total transmit power to be used for the plurality of uplink communications may satisfy the maximum transmit power of the user equipment (UE).

[0159] As in Fig.12As further shown in FIG. 1 , in some aspects, process 1200 may include determining whether power reduction of the respective transmit powers of the plurality of uplink communications is required based at least in part on determining the respective transmit powers of the plurality of uplink communications (block 1230). For example, a BS (e.g., BS 110 using controller / processor 240, etc.) may determine whether power reduction of the respective transmit powers is required based at least in part on determining the respective transmit powers of the plurality of uplink communications, as described elsewhere herein.

[0160] As in Fig.12 As further shown in FIG. 1 , in some aspects, process 1200 may include transmitting to the UE information identifying respective transmit powers that the UE will use to transmit a plurality of uplink communications based at least in part on determining whether power reduction is needed (block 1240). For example, a BS (e.g., BS 110 using controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, etc.) may transmit to the UE information identifying respective transmit powers that the UE will use to transmit the plurality of uplink communications based at least in part on determining whether power reduction is needed, as described elsewhere herein.

[0161] Process 1200 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0162] In some aspects, the BS may determine whether power reduction is needed based at least in part on: a first uplink communication of the plurality of uplink communications is a sounding reference signal (SRS), and a second uplink communication of the plurality of uplink communications is a physical uplink shared channel (PUSCH) communication or a physical uplink control channel (PUCCH) communication. In some aspects, the BS may determine to reduce a first corresponding transmit power of the first uplink communication by a first threshold amount based at least in part on the first uplink communication including the SRS and the second uplink communication including at least one of the PUSCH communication or the PUCCH communication, wherein the first threshold amount is based at least in part on a second corresponding transmit power of the second uplink communication.

[0163] In some aspects, the first threshold amount causes a second corresponding transmit power of the second uplink communication to exceed the first corresponding transmit power of the first uplink communication by at least a second threshold amount. In some aspects, the second threshold amount is based at least in part on: a number of overlapping resource elements between the first uplink communication and the second uplink communication relative to a total number of resource elements associated with the second uplink communication (excluding a set of resource elements associated with a demodulation reference signal (DMRS) or a phase tracking reference signal (PTRS); in the case where the second uplink communication includes PUSCH communication, a modulation and coding scheme (MCS) index or number of transmission layers associated with the PUSCH communication; or in the case where the second uplink communication includes PUCCH communication, a PUCCH format and uplink control information (UCI) type associated with the PUCCH communication.

[0164] In some aspects, the BS may determine to reduce the first corresponding transmission power by a first threshold amount on an overlapping set of resource blocks associated with the first uplink communication and the second uplink communication, and not reduce the first corresponding transmission power for a non-overlapping set of resource blocks associated with the first uplink communication, or may determine to reduce the first corresponding transmission power by the first threshold amount on all resource blocks associated with the first uplink communication.

[0165] In some aspects, the BS may determine to reduce the first corresponding transmit power on all resource elements of the first channel associated with the first uplink communication, or to reduce the first corresponding transmit power on the set of overlapping resource blocks and not reduce the first corresponding transmit power for the set of non-overlapping resource blocks based at least in part on the number of overlapping resource elements between the first uplink communication and the second uplink communication relative to the total number of resource elements associated with the first uplink communication. In some aspects, the BS may transmit a semi-static configuration or a dynamic signal that causes the UE to transmit the plurality of uplink communications using the corresponding transmit power based at least in part on determining whether power reduction is needed.

[0166] In some aspects, the BS may transmit information associated with a radio resource control (RRC) configuration based at least in part on determining whether power reduction is required. In some aspects, the BS may determine that a total scheduled or configured transmit power to be used for the multiple uplink communications does not satisfy a maximum transmit power of the UE. In some aspects, the UE may determine the scheduled transmit power as a first corresponding transmit power of the first uplink communication based at least in part on determining that a first uplink communication in the multiple uplink communications has a higher priority than a second uplink communication in the multiple uplink communications and based at least in part on determining that a total transmit power of the multiple uplink communications satisfies the maximum transmit power, and determine a difference between the maximum transmit power of the UE and the first corresponding transmit power as a second transmit power of the second uplink communication.

[0167] In some aspects, the total scheduled or configured transmit power includes a first scheduled transmit power for a first uplink communication in the plurality of uplink communications and a second scheduled transmit power for a second uplink communication in the plurality of uplink communications. In some aspects, the BS may determine that the plurality of uplink channels will overlap on at least one orthogonal frequency division multiplexing (OFDM) symbol; and may determine that the plurality of uplink channels will be transmitted contemporaneously based at least in part on determining that the plurality of uplink channels will overlap on at least one OFDM symbol.

[0168] In some aspects, the priority rule set identifies at least one of: a first corresponding priority associated with a physical random access channel (PRACH) communication associated with a primary cell (PCell), a second corresponding priority associated with a physical uplink control channel (PUCCH) communication or a physical uplink shared channel (PUSCH) communication associated with an ultra-reliable low latency communication (URLLC) service, a third corresponding priority associated with a PUCCH communication or a PUSCH communication associated with an enhanced mobile broadband (eMBB) service, or a fourth corresponding priority associated with a sounding reference signal (SRS) or PRACH communication associated with a cell other than the Pcell, wherein the first corresponding priority, the second corresponding priority, the third corresponding priority, and the fourth corresponding priority are different. In some aspects, the priority rule set identifies a sub-priority set for uplink communications associated with a second corresponding priority, comprising: a first sub-priority associated with PUCCH communications associated with a scheduling request (SR), an acknowledgement (ACK) or a negative acknowledgement (NACK), or with a PUSCH communication associated with an ACK or a NACK; or a second sub-priority associated with PUCCH associated with channel state information (CSI), or with a PUSCH communication associated with CSI; or a third sub-priority associated with PUSCH communications not associated with ACK, NACK or CSI, wherein the first sub-priority has the highest relative priority, the second sub-priority has the second highest relative priority, and the third sub-priority has the third highest relative priority.

[0169] In some aspects, the priority rule set identifies a sub-priority set for uplink communications associated with a third corresponding priority, comprising: a first sub-priority associated with PUCCH communications associated with a scheduling request (SR), an acknowledgement (ACK), or a negative acknowledgement (NACK), or associated with a PUSCH communication associated with an ACK or a NACK; a second sub-priority associated with PUCCH communications associated with channel state information (CSI), or associated with PUSCH communications associated with CSI; or a third sub-priority associated with PUSCH communications not associated with ACK, NACK, or CSI, wherein the first sub-priority has the highest relative priority, the second sub-priority has the second highest relative priority, and the third sub-priority has the third highest relative priority.

[0170] In some aspects, the priority rule set identifies that a first uplink communication has a higher priority than a second uplink communication based at least in part on a first uplink communication among the multiple uplink communications being scheduled to start earlier in time than a second uplink communication among the multiple uplink communications, wherein a first corresponding transmit power of the first uplink communication is a first scheduled transmit power of the first uplink communication and a second corresponding transmit power of the second uplink communication does not exceed a difference between a maximum transmit power and the first corresponding transmit power of the first uplink communication.

[0171] In some aspects, the BS may transmit information that causes the UE to transmit the first uplink communication via a first set of antennas associated with the UE based at least in part on determining the corresponding transmit power of the first uplink communication in a plurality of uplink communications and based at least in part on determining whether power reduction is needed, and may transmit information that causes the UE to transmit the second uplink communication via a second set of antennas associated with the UE based at least in part on determining the corresponding transmit power of the first uplink communication in the plurality of uplink communications and based at least in part on determining whether power reduction is needed, wherein the first set of antennas is different from the second set of antennas. In some aspects, the plurality of uplink communications include at least two of: a physical uplink control channel (PUCCH) communication, a physical uplink shared channel (PUSCH) communication, a sounding reference signal (SRS), or a physical random access channel (PRACH) communication.

[0172] although Fig.12 An example block diagram of process 1200 is shown, but in some aspects, process 1200 may include Fig.12 Additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in the process 1200. Additionally or alternatively, two or more blocks of the process 1200 may be executed in parallel.

[0173] Fig.13 1 is a diagram illustrating an example process 1300 performed, for example, by a UE in accordance with various aspects of the present disclosure. Example process 1300 is an example in which a UE (e.g., UE 120) performs power control of uplink channel spatial multiplexing based at least in part on a configured number of channels and / or a scheduled number of channels.

[0174] As in Fig.13 As shown in , in some aspects, process 1300 may include determining that multiple uplink channels are to be transmitted concurrently on a component carrier via different antennas (block 1310). For example, a UE (e.g., UE 120 using controller / processor 280, etc.) may determine that the multiple uplink channels are to be transmitted concurrently on a component carrier via different antennas, as described elsewhere herein.

[0175] As in Fig.13 As shown in , in some aspects, process 1300 may include determining respective transmit powers of a plurality of uplink communications associated with the plurality of channels based at least in part on determining that the plurality of uplink channels will be transmitted contemporaneously on a component carrier via different antennas and based at least in part on the number of channels that the UE is scheduled to transmit, wherein respective transmissions of the plurality of uplink communications are scheduled to overlap on at least one orthogonal frequency division multiplexing (OFDM) symbol, wherein a total transmit power to be used for the plurality of uplink communications satisfies a maximum transmit power of the UE (block 1320). For example, a UE (e.g., UE 120 using controller / processor 280, etc.) may determine respective transmit powers of a plurality of uplink communications associated with the plurality of channels based at least in part on determining that the plurality of uplink channels will be transmitted contemporaneously on the component carrier via different antennas and based at least in part on the number of channels that the UE is scheduled to transmit. In some aspects, respective transmissions of the plurality of uplink communications may be scheduled to overlap on at least one orthogonal frequency division multiplexing (OFDM) symbol, as described elsewhere herein. In some aspects, the total transmit power to be used for the multiple uplink communications may satisfy the maximum transmit power of the UE.

[0176] As in Fig.13 As shown in , in some aspects, process 1300 may include transmitting the plurality of uplink communications using respective transmit powers (block 1340). For example, a UE (e.g., UE 120 using controller / processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, etc.) may transmit the plurality of uplink communications using respective transmit powers, as described elsewhere herein.

[0177] Process 1300 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0178] In some aspects, the UE may determine a maximum value of respective transmit powers for the multiple uplink communications by dividing the maximum transmit power of the UE by the number of channels on which the UE is scheduled to transmit contemporaneously, wherein the multiple uplink communications have the same starting OFDM symbol. In some aspects, the UE may determine whether power reduction is required based at least in part on: a first uplink communication of the multiple uplink communications is a sounding reference signal (SRS), and a second uplink communication of the multiple uplink communications is a physical uplink shared channel (PUSCH) communication or a physical uplink control channel (PUCCH) communication.

[0179] In some aspects, the UE may determine to reduce a first corresponding transmit power of the first uplink communication by a first threshold amount based at least in part on the first uplink communication including the SRS and the second uplink communication including at least one of a PUSCH communication or a PUCCH communication, wherein the first threshold amount is based at least in part on a second corresponding transmit power of the second uplink communication. In some aspects, the first threshold amount causes the second corresponding transmit power of the second uplink communication to exceed the first corresponding transmit power of the first uplink communication by at least a second threshold amount.

[0180] In some aspects, the second threshold amount is based at least in part on: the number of overlapping resource elements between the first uplink communication and the second uplink communication relative to the total number of resource elements associated with the second uplink communication (excluding a set of resource elements associated with a demodulation reference signal (DMRS) or a phase tracking reference signal (PTRS); if the second uplink communication includes PUSCH communication, the number of modulation and coding scheme (MCS) indexes or transmission layers associated with the PUSCH communication; or if the second uplink communication includes PUCCH communication, the PUCCH format and uplink control information (UCI) type associated with the PUCCH communication. In some aspects, the UE may determine to reduce the first corresponding transmit power by the first threshold amount on a set of overlapping resource blocks associated with the first uplink communication and the second uplink communication, and not reduce the first corresponding transmit power for a set of non-overlapping resource blocks, or may determine to reduce the first corresponding transmit power by the first threshold amount on all resource blocks associated with the first uplink communication.

[0181] In some aspects, the UE may determine to reduce the first corresponding transmit power based at least in part on: a radio resource control (RRC) configuration received from a base station (BS), or a number of overlapping resource elements between the first uplink communication and the second uplink communication relative to a total number of resource elements associated with the first uplink communication. In some aspects, the UE may determine to reduce the first corresponding transmit power by a first threshold amount based at least in part on at least one of: a semi-static configuration from a base station (BS), a dynamic signal from the BS, or a determination made by the UE. In some aspects, the UE may transmit a first uplink communication of the plurality of uplink communications via a first set of one or more antennas associated with the UE; and transmit a second uplink communication of the plurality of uplink communications via a second set of one or more antennas associated with the UE.

[0182] although Fig.13 Example blocks of process 1300 are shown, but in some aspects, process 1300 may include Fig.13Additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in the process 1300. Additionally or alternatively, two or more blocks of the process 1300 may be executed in parallel.

[0183] Fig.14 14 is a diagram illustrating an example process 1400 performed, for example, by a UE, in accordance with various aspects of the present disclosure. Example process 1400 is an example in which a BS (e.g., BS 110) performs power control of uplink channel spatial multiplexing based at least in part on a configured number of channels and / or a scheduled number of channels.

[0184] As in Fig.14 As shown in , in some aspects, process 1400 may include determining that multiple uplink channels are to be transmitted concurrently on a component carrier via different antennas (block 1410). For example, a BS (e.g., BS 110 using controller / processor 240, etc.) may determine that multiple uplink channels are to be transmitted concurrently on a component carrier via different antennas, as described elsewhere herein.

[0185] As in Fig.14 As shown in , in some aspects, process 1400 may include determining respective transmit powers of a plurality of uplink communications associated with the plurality of channels based at least in part on determining that the plurality of uplink channels will be transmitted contemporaneously on the component carrier via different antennas and based at least in part on the number of channels that a user equipment (UE) is scheduled to transmit, wherein respective transmissions of the plurality of uplink communications are scheduled to overlap on at least one orthogonal frequency division multiplexing (OFDM) symbol, wherein a total transmit power to be used for the plurality of uplink communications satisfies a maximum transmit power of the UE (block 1420). For example, a BS (e.g., BS 110 using controller / processor 240, etc.) may determine respective transmit powers of a plurality of uplink communications associated with the plurality of uplink channels based at least in part on determining that the plurality of uplink channels will be transmitted contemporaneously on the component carrier via different antennas and based at least in part on the number of channels that a user equipment (UE) is scheduled to transmit. In some aspects, respective transmissions of the plurality of uplink communications are scheduled to overlap on at least one orthogonal frequency division multiplexing (OFDM) symbol, as described elsewhere herein. In some aspects, the total transmit power used for multiple uplink communications is subject to the maximum transmit power of the UE.

[0186] As in Fig.14As shown in , in some aspects, process 1400 may include transmitting information to the UE that causes the UE to transmit the plurality of uplink communications using respective transmit powers (block 1440). For example, a BS (e.g., BS 110 using controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, etc.) may transmit information to the UE that causes the UE to transmit the plurality of uplink communications using respective transmit powers, as described elsewhere herein.

[0187] Process 1400 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0188] In some aspects, the BS may determine a maximum value of respective transmit powers for the multiple uplink communications by dividing the maximum transmit power of the UE by the number of channels on which the UE is scheduled to transmit, wherein the multiple uplink communications have the same starting OFDM symbol, or may determine a higher priority of the first uplink communication relative to the second uplink communication based at least in part on the fact that a first uplink communication in the multiple uplink communications starts earlier in time than a second uplink communication in the multiple uplink communications, wherein the respective transmit power of the first uplink communication is the scheduled transmit power of the first uplink communication. In some aspects, the BS may determine whether power reduction is required based at least in part on the fact that the first uplink communication in the multiple uplink communications is a sounding reference signal (SRS), and the second uplink communication in the multiple uplink communications is a physical uplink shared channel (PUSCH) communication or a physical uplink control channel (PUCCH) communication.

[0189] In some aspects, the BS may determine to reduce a first corresponding transmit power of the first uplink communication by a first threshold amount based at least in part on the first uplink communication including the SRS and the second uplink communication including at least one of a PUSCH communication or a PUCCH communication, wherein the first threshold amount is based at least in part on a second corresponding transmit power of the second uplink communication. In some aspects, the first threshold amount causes the second corresponding transmit power of the second uplink communication to exceed the first corresponding transmit power of the first uplink communication by at least a second threshold amount.

[0190] In some aspects, the second threshold amount is based at least in part on: the number of overlapping resource elements between the first uplink communication and the second uplink communication relative to the total number of resource elements associated with the second uplink communication (excluding a set of resource elements associated with a demodulation reference signal (DMRS) or a phase tracking reference signal (PTRS)); when the second uplink communication includes PUSCH communication, the modulation and coding scheme (MCS) index or the number of transport layers associated with the PUSCH communication; or when the second uplink communication includes PUCCH communication, the PUCCH format and uplink control information (UCI) type associated with the PUCCH communication.

[0191] In some aspects, the BS may determine to reduce the first corresponding transmission power by a first threshold amount on an overlapping set of resource blocks associated with the first uplink communication and the second uplink communication, and not reduce the first corresponding transmission power for a non-overlapping set of resource blocks, or may determine to reduce the first corresponding transmission power by the first threshold amount on all resource blocks associated with the first uplink communication.

[0192] In some aspects, the BS may determine to reduce the first respective transmit power based at least in part on a number of overlapping resource elements between the first uplink communication and the second uplink communication relative to a total number of resource elements associated with the first uplink communication. In some aspects, the BS may transmit a semi-static configuration or a dynamic signal that causes the UE to transmit the plurality of uplink communications using respective transmit powers based at least in part on determining whether power reduction is needed.

[0193] In some aspects, the BS may transmit a radio resource control (RRC) configuration that causes the UE to transmit the plurality of uplink communications using respective transmit powers based at least in part on determining whether power reduction is required. In some aspects, the BS may transmit information that causes the UE to transmit a first uplink communication of the plurality of uplink communications via a first antenna associated with the UE and causes the UE to transmit a second uplink communication of the plurality of uplink communications via a second antenna associated with the UE.

[0194] although Fig.14 Example blocks of process 1400 are shown, but in some aspects, process 1400 may include Fig.14 Additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in the process 1400. Additionally or alternatively, two or more blocks of the process 1400 may be executed in parallel.

[0195] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations may be made in light of the above disclosure or may be acquired by practice of the various aspects.

[0196] As used herein, the term component is intended to be broadly interpreted as hardware, firmware, or a combination of hardware and software. As used herein, a processor is implemented with hardware, firmware, or a combination of hardware and software.

[0197] Some aspects are described herein in conjunction with a threshold value. As used herein, satisfying a threshold value may refer to a value being greater than a threshold value, greater than or equal to a threshold value, less than a threshold value, less than or equal to a threshold value, equal to a threshold value, not equal to a threshold value, and the like.

[0198] It will be apparent that the systems and / or methods described herein can be implemented in different forms of hardware, firmware, or a combination of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit the various aspects. Thus, the operation and behavior of these systems and / or methods are described herein without reference to specific software codes—it is understood that software and hardware can be designed to implement these systems and / or methods based at least in part on the description herein.

[0199] Although specific feature combinations are described in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. In fact, many of these features can be combined in a manner not specifically described in the claims and / or not disclosed in the specification. Although each dependent claim listed below can be directly subordinate to only one claim, the disclosure of various aspects includes that each dependent claim is combined with each other claim in this group of claims. The phrase quoting "at least one of" a column of items refers to any combination of these items, including single members. As an example, "at least one of a, b or c" is intended to cover: a, b, c, ab, ac, bc, and abc, and any combination with multiple identical elements (for example, aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc, or any other sorting of a, b and c).

[0200] Elements, actions or instructions used herein should not be interpreted as critical or necessary unless explicitly described as such. Moreover, as used herein, the articles "one" and "a" are intended to include one or more items, and can be used interchangeably with "one or more". In addition, as used herein, the terms "set (set)" and "group" are intended to include one or more items (e.g., related items, non-related items, combinations of related and non-related items, etc.), and can be used interchangeably with "one or more". In the case of being intended for only one project, the term "only one" or similar language is used. Moreover, as used herein, the terms "having", "containing", "including" etc. are intended to be open terms. In addition, the phrase "based on" is intended to mean "based at least in part on", unless otherwise explicitly stated.

Claims

1. A wireless communication method performed by a user equipment UE, comprising: determining that a plurality of uplink channels are to be transmitted contemporaneously on component carriers via different antennas; determining respective transmit powers for a plurality of uplink communications associated with the plurality of uplink channels based at least in part on a determination that the plurality of uplink channels are to be contemporaneously transmitted on the component carrier via the different antennas and based at least in part on a set of priority rules identifying respective priorities for the plurality of uplink communications, wherein the total transmit power used for the plurality of uplink communications satisfies the maximum transmit power of the UE; as well as transmitting the plurality of uplink communications using the respective transmit powers, wherein in symbols in which a first uplink communication and a second uplink communication of the plurality of uplink communications do not overlap, the first uplink communication is transmitted using a scheduled transmit power, and wherein in symbols where the first uplink communication and the second uplink communication overlap, the first uplink communication is transmitted using a first corresponding transmit power and the second uplink communication is transmitted using a second corresponding transmit power, the second corresponding transmit power being less than or equal to a difference between the maximum transmit power of the UE and the first corresponding transmit power, wherein the priority rule set indicates the respective priorities of the plurality of uplink channels based at least in part on priorities of traffic communicated in the plurality of uplink channels, and wherein the priority rule set identifies a priority set for uplink communications, the priority set comprising: a first priority level associated with a Physical Random Access Channel (PRACH) communication associated with the primary cell, a second priority level associated with a physical uplink shared channel (PUSCH) or a physical uplink control channel (PUCCH) communication associated with an ultra-reliable low latency (URLLC) communication, and A third priority level associated with PUSCH or PUCCH communications associated with enhanced mobile broadband, eMBB communications.

2. The method of claim 1 , wherein determining that the plurality of uplink channels are to be transmitted contemporaneously on the component carrier via the different antennas comprises: It is determined that a total scheduled transmit power or configured transmit power to be used for the plurality of uplink communications does not satisfy the maximum transmit power of the UE.

3. The method of claim 2, wherein the total scheduled transmit power comprises the scheduled transmit power and another scheduled transmit power for the second uplink communication.

4. The method of claim 2, wherein determining the respective transmit powers of the plurality of uplink communications comprises: The scheduled transmit power is determined as the first corresponding transmit power at least in part based on determining that the first uplink communication has a higher priority than the second uplink communication and at least in part based on determining that the total scheduled transmit power does not meet the maximum transmit power, and the difference between the maximum transmit power of the UE and the first corresponding transmit power is determined as the second corresponding transmit power.

5. The method of claim 1, further comprising: determining that the plurality of uplink channels will overlap on at least one orthogonal frequency division multiplexing (OFDM) symbol; and Wherein determining that the plurality of uplink channels are to be transmitted contemporaneously comprises: The multiple uplink channels are determined to be transmitted contemporaneously based at least in part on determining that the multiple uplink channels are to overlap over the at least one OFDM symbol.

6. The method of claim 1 , wherein the priority rule set identifies a sub-priority set for uplink communications having the second priority or the third priority, comprising: a first sub-priority level associated with a physical uplink control channel PUCCH communication associated with a scheduling request SR, an acknowledgement ACK or a negative acknowledgement NACK, or associated with a physical uplink shared channel PUSCH communication associated with the ACK or the NACK, a second sub-priority level, the second sub-priority level being associated with the PUCCH communication with channel state information CSI or the PUSCH communication with the CSI, or a third sub-priority level, the third sub-priority level being associated with the PUSCH communication not associated with the ACK, the NACK or the CSI, The first sub-priority level has the highest relative priority, the second sub-priority level has the second highest relative priority, and the third sub-priority level has the third highest relative priority.

7. The method of claim 1, wherein the priority rule set identifies that the first uplink communication has a higher priority than the second uplink communication based at least in part on the first uplink communication starting earlier in time than the second uplink communication, The first corresponding transmit power is the scheduled transmit power.

8. The method of claim 1, wherein in the symbols where the first uplink communication overlaps with the second uplink communication, the first respective transmit power and the second respective transmit power are determined according to the respective priorities for the plurality of uplink communications.

9. The method of claim 1 , wherein transmitting the plurality of uplink communications comprises: transmitting the first uplink communication via a first set of antennas associated with the UE based at least in part on determining the first corresponding transmit power, and transmitting the second uplink communication via a second set of antennas associated with the UE based at least in part on determining the second corresponding transmit power, The first group of antennas is different from the second group of antennas.

10. The method of claim 1, further comprising: determining whether power reduction of the plurality of uplink communications is required based at least in part on: The first uplink communication is a sounding reference signal SRS, and The second uplink communication is a physical uplink shared channel (PUSCH) communication or a physical uplink control channel (PUCCH) communication.

11. The method of claim 10, further comprising: determining to reduce the first respective transmit power by a first threshold amount based at least in part on the first uplink communication including the SRS and the second uplink communication including at least one of the PUSCH communication or the PUCCH communication, Wherein the first threshold amount is based at least in part on the second corresponding transmit power.

12. The method of claim 11, wherein the first threshold amount causes the second corresponding transmit power to exceed the first corresponding transmit power by at least a second threshold amount.

13. The method of claim 12, wherein the second threshold amount is based at least in part on: a number of overlapping resource elements between the first uplink communication and the second uplink communication relative to a total number of resource elements associated with the second uplink communication excluding a set of resource elements associated with a demodulation reference signal DMRS or a phase tracking reference signal PTRS, In the case where the second uplink communication includes the PUSCH communication, a modulation and coding scheme MCS index or the number of transmission layers associated with the PUSCH communication, or In case the second uplink communication includes the PUCCH communication, a PUCCH format and uplink control information (UCI) type associated with the PUCCH communication.

14. The method of claim 11 , wherein determining to reduce the first corresponding transmit power by the first threshold amount comprises: determining to reduce the first respective transmit power by the first threshold amount on an overlapping set of resource blocks associated with the first uplink communication and the second uplink communication and not to reduce the first respective transmit power for a non-overlapping set of resource blocks associated with the first uplink communication, or A determination is made to reduce the first respective transmit power by the first threshold amount across all resource blocks associated with the first uplink communication.

15. The method of claim 14, wherein determining to reduce the first corresponding transmit power comprises: determining to reduce the first corresponding transmit power on all resource elements of a first channel associated with the first uplink communication or to reduce the first corresponding transmit power on the overlapping set of resource blocks and not to reduce the first corresponding transmit power on the non-overlapping set of resource blocks based at least in part on: a radio resource control RRC configuration received from a base station BS, or A number of overlapping resource elements between the first uplink communication and the second uplink communication relative to a total number of resource elements associated with the first uplink communication.

16. The method of claim 11, wherein determining to reduce the first corresponding transmit power by the first threshold amount comprises: determining to reduce the first respective transmit power by the first threshold amount based at least in part on at least one of: Semi-static configuration from base station BS, A dynamic signal from the BS, or A determination is made by the UE.

17. The method of claim 1, further comprising: Another channel other than the plurality of uplink channels that is contemporaneously scheduled with the plurality of uplink channels is dropped based at least in part on having a lower priority than the plurality of uplink channels.

18. The method of claim 1, further comprising: transmitting information indicating capabilities of the UE; as well as Configuration information based at least in part on the capabilities is received, wherein the configuration information indicates a technique to be used to determine the corresponding transmit power.

19. The method of claim 1, wherein the plurality of uplink communications comprises at least two of: Physical Uplink Control Channel PUCCH communication, Physical uplink shared channel PUSCH communication, Sounding reference signal SRS, or Physical Random Access Channel PRACH communication.

20. A wireless communication method performed by a base station BS, comprising: determining that a plurality of uplink channels are to be transmitted contemporaneously on component carriers via different antennas; determining respective transmit powers for a plurality of uplink communications associated with the plurality of uplink channels based at least in part on a determination that the plurality of uplink channels are to be contemporaneously transmitted on the component carrier via the different antennas and based at least in part on a set of priority rules identifying respective priorities for the plurality of uplink communications, wherein the total transmit power used for the plurality of uplink communications satisfies the maximum transmit power of the user equipment UE; as well as transmitting to the UE information identifying the respective transmit powers that the UE is to use to transmit the plurality of uplink communications, wherein in symbols in which a first uplink communication and a second uplink communication of the plurality of uplink communications do not overlap, the first uplink communication is transmitted using a scheduled transmit power, and wherein in symbols where the first uplink communication and the second uplink communication overlap, the first uplink communication is transmitted using a first corresponding transmit power and the second uplink communication is transmitted using a second corresponding transmit power, the second corresponding transmit power being less than or equal to a difference between the maximum transmit power of the UE and the first corresponding transmit power, wherein the priority rule set indicates the respective priorities of the plurality of uplink channels based at least in part on priorities of traffic communicated in the plurality of uplink channels, and wherein the priority rule set identifies a priority set for uplink communications, the priority set comprising: a first priority level associated with a Physical Random Access Channel (PRACH) communication associated with the primary cell, a second priority level associated with a physical uplink shared channel (PUSCH) or a physical uplink control channel (PUCCH) communication associated with an ultra-reliable low latency (URLLC) communication, and A third priority level associated with PUSCH or PUCCH communications associated with enhanced mobile broadband, eMBB communications.

21. A wireless communication method performed by a user equipment UE, comprising: determining that a plurality of uplink channels are to be transmitted contemporaneously on component carriers via different antennas; determining respective transmit powers for a plurality of uplink communications associated with the plurality of uplink channels based at least in part on a determination that the plurality of uplink channels are to be contemporaneously transmitted on the component carrier via the different antennas and based at least in part on a number of channels that the UE is scheduled to transmit, wherein respective transmissions of the plurality of uplink communications are scheduled to overlap on at least one orthogonal frequency division multiplexing (OFDM) symbol; wherein the total transmit power used for the plurality of uplink communications satisfies the maximum transmit power of the UE; transmitting the plurality of uplink communications using the respective transmit powers, wherein in a first OFDM symbol in which a first uplink communication and a second uplink communication of the plurality of uplink communications do not overlap, the first uplink communication is transmitted using a scheduled transmit power, and Wherein, in a second OFDM symbol where the first uplink communication and the second uplink communication overlap, the first uplink communication is transmitted using a first corresponding transmit power and the second uplink communication is transmitted using a second corresponding transmit power, and the second corresponding transmit power is less than or equal to a difference between the maximum transmit power of the UE and the first corresponding transmit power.

22. The method of claim 21, further comprising: determining a maximum value of the respective transmit powers for the plurality of uplink communications by dividing the maximum transmit power of the UE by the number of channels on which the UE is scheduled to transmit simultaneously, Wherein the multiple uplink communications have the same starting OFDM symbol.

23. The method of claim 21, further comprising: Determining whether power reduction is required is based at least in part on: The first uplink communication is a sounding reference signal SRS, and The second uplink communication is a physical uplink shared channel (PUSCH) communication or a physical uplink control channel (PUCCH) communication.

24. A method as claimed in claim 21, wherein the corresponding transmission powers of the multiple uplink communications are at least partially based on the corresponding numbers of antennas of the different antennas used to transmit the multiple uplink communications, wherein the maximum transmission power of the UE is evenly distributed across the different antennas, and wherein the maximum power of an uplink channel in the multiple uplink channels is at least partially based on the number of antennas for the uplink channel and the maximum power per antenna of the different antennas.

25. The method of claim 21, further comprising: Another channel other than the plurality of uplink channels that is contemporaneously scheduled with the plurality of uplink channels is dropped based at least in part on having a lower priority than the plurality of uplink channels.

26. The method of claim 21, further comprising: transmitting information indicating capabilities of the UE; as well as Configuration information based at least in part on the capabilities is received, wherein the configuration information indicates a technique to be used to determine the corresponding transmit power.

27. The method of claim 21, wherein transmitting the plurality of uplink communications comprises: transmitting the first uplink communication via a first set of one or more antennas associated with the UE; as well as The second uplink communication is transmitted via a second set of one or more antennas associated with the UE.

28. A wireless communication method performed by a base station BS, comprising: determining that a plurality of uplink channels are to be transmitted contemporaneously on component carriers via different antennas; determining respective transmit powers of a plurality of uplink communications associated with the plurality of uplink channels based at least in part on determining that the plurality of uplink channels are to be transmitted contemporaneously on the component carrier via the different antennas and based at least in part on a number of channels that a user equipment UE is scheduled to transmit, wherein respective transmissions of the plurality of uplink communications are scheduled to overlap on at least one orthogonal frequency division multiplexing (OFDM) symbol; wherein the total transmit power used for the plurality of uplink communications satisfies the maximum transmit power of the UE; as well as transmitting to the UE information causing the UE to transmit the plurality of uplink communications using the corresponding transmit powers, wherein in a first OFDM symbol in which a first uplink communication and a second uplink communication of the plurality of uplink communications do not overlap, the first uplink communication is transmitted using a scheduled transmit power, and Wherein, in a second OFDM symbol where the first uplink communication and the second uplink communication overlap, the first uplink communication is transmitted using a first corresponding transmit power and the second uplink communication is transmitted using a second corresponding transmit power, and the second corresponding transmit power is less than or equal to a difference between the maximum transmit power of the UE and the first corresponding transmit power.

29. The method of claim 28, wherein determining the respective transmit powers of the plurality of uplink communications comprises: determining a maximum value of the respective transmit powers for the plurality of uplink communications by dividing the maximum transmit power of the UE by the number of channels on which the UE is scheduled to transmit, wherein the plurality of uplink communications have the same starting OFDM symbol, or determining that the first uplink communication has priority over the second uplink communication based on the first uplink communication starting earlier in time than the second uplink communication, The first corresponding transmit power is the scheduled transmit power.

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