Techniques for determining uplink power for multiple concurrent uplink transmissions

Abstract

Wireless communication methods, systems, and devices for uplink transmit power determination are described, in which a user equipment (UE) can be configured for carrier aggregation of multiple concurrent uplink component carriers (CCs). When the UE is configured for uplink carrier aggregation, the UE can apply an adjustment to a maximum transmit power limit (MTPL) for one or more CCs. When maximum transmit power is requested for a CC, the MTPL adjustment can be applied to reduce the transmit power of one of the CCs. The MTPL adjustment can reduce the transmit power to less than the MTPL of the UE, such that one or more other CCs can still have some transmit power. The UE can calculate the MTPL adjustment based on scheduling parameters and requested transmit power for each CC, based on a static value, or on a per-subframe basis.

Description

[0001] Cross-references

[0002] This patent application claims the benefits of U.S. Provisional Patent Application No. 63 / 076,779, filed September 10, 2020, entitled “TECHNIQUES FOR DETERMINING UPLINK POWER FOR MULTIPLE CONCURRENT UPLINK TRANSMISSIONS”, and U.S. Patent Application No. 17 / 470232, filed September 9, 2021, entitled “TECHNIQUES FOR DETERMINING UPLINK POWER FOR MULTIPLE CONCURRENT UPLINK TRANSMISSIONS”; each of these is assigned to the assignee of this patent application. Technical Field

[0003] The following relates to wireless communication, including techniques for determining uplink power for multiple concurrent uplink transmissions. Background Technology

[0004] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, and broadcasting. These systems can support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include fourth-generation (4G) systems such as Long Term Evolution (LTE), LTE-A Advanced (LTE-A), or LTE-A Pro systems, and fifth-generation (5G) systems, which may be referred to as New Radio (NR) systems. These systems can employ technologies such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), or Discrete Fourier Transform Extended Orthogonal Frequency Division Multiplexing (DFT-S-OFDM). A wireless multiple access communication system may include one or more base stations or one or more network access nodes, each of which simultaneously supports communication from multiple communication devices, which may also be referred to as User Equipment (UE).

[0005] A UE can use transmit power to transmit communications to, for example, a base station or other device, where the transmit power can be based on a power control procedure that can increase or decrease the amount of transmit power depending on channel conditions between the UE and the base station. In some cases, the UE can be limited to a maximum transmit power (e.g., due to regulatory limits or hardware limitations at the UE) that limits the total transmit power of the UE across one or more carriers. Efficient techniques for setting transmit power in the presence of multiple carriers can be desirable. SUMMARY

[0006] The described techniques relate to improved methods, systems, devices, and apparatuses that support techniques for determining uplink power for multiple concurrent uplink transmissions. In various aspects, the techniques provide for uplink power determination based on whether a user equipment (UE) is configured for uplink carrier aggregation in which multiple uplink carriers can be transmitted concurrently by the UE. In some cases, when the UE is configured for uplink carrier aggregation, the UE can apply an adjustment to a maximum transmit power limit (MTPL) parameter for one or more component carriers (CCs). The MTPL adjustment can be applied to reduce the transmit power of one of the CCs when maximum transmit power is requested for the CC. The MTPL adjustment can reduce the transmit power to less than the MTPL of the UE, thereby providing that one or more other CCs can still have some transmit power. In some cases, the UE can calculate the MTPL adjustment on a per-subframe basis based on scheduling parameters and requested transmit power per subcarrier. In some cases, a CC can be in a discontinuous transmission (DTX) state in which no transmission is made on the CC for a particular subframe, and the UE can adjust the MTPL value of one or more other carriers to allow for higher transmit power in the particular subframe.

[0007] A method of wireless communication at a UE is described. The method can include receiving, from a base station, scheduling information for a set of subframes, determining, based on the scheduling information, one or more scheduling parameters for each component carrier of a set of component carriers for uplink communications with the base station, calculating, for each subframe of the set of subframes, a power adjustment for a maximum transmit power limit for each component carrier of the set of component carriers based on the one or more scheduling parameters, where a first power adjustment for a first component carrier of the set of component carriers is determined based on a second scheduling parameter of a second component carrier, and a second power adjustment for the second component carrier is based on a first scheduling parameter of the first component carrier, and transmitting, to the base station, uplink communications in each subframe using one or more component carriers of the set of component carriers, where a transmit power for each component carrier is based on the calculation.

[0008] An apparatus for wireless communication at a UE is described. The apparatus can include a processor, memory coupled with the processor, and instructions stored in the memory. The instructions can be executable by the processor to cause the apparatus to receive, from a base station, scheduling information for a set of subframes, determine, based on the scheduling information, one or more scheduling parameters for each component carrier of a set of component carriers for uplink communications with the base station, calculate, for each subframe of the set of subframes, a power adjustment of a maximum transmit power limit for each component carrier of the set of component carriers based on the one or more scheduling parameters, where a first power adjustment for a first component carrier of the set of component carriers is determined based on a second scheduling parameter of a second component carrier and a second power adjustment for the second component carrier of the set of component carriers is based on a first scheduling parameter of the first component carrier, and transmit, to the base station, the uplink communications in each subframe using one or more of the set of component carriers, where a transmit power for each component carrier is based on the calculation.

[0009] Another apparatus for wireless communication at a UE is described. The apparatus can include means for receiving, from a base station, scheduling information for a set of subframes, determining, based on the scheduling information, one or more scheduling parameters for each component carrier of a set of component carriers for uplink communications with the base station, calculating, for each subframe of the set of subframes, a power adjustment of a maximum transmit power limit for each component carrier of the set of component carriers based on the one or more scheduling parameters, where a first power adjustment for a first component carrier of the set of component carriers is determined based on a second scheduling parameter of a second component carrier and a second power adjustment for the second component carrier of the set of component carriers is based on a first scheduling parameter of the first component carrier, and transmitting, to the base station, the uplink communications in each subframe using one or more of the set of component carriers, where a transmit power for each component carrier is based on the calculation.

[0010] A non-transitory computer-readable medium storing code for wireless communication at a UE is described. The code can include instructions executable by a processor to receive, from a base station, scheduling information for a set of subframes; determine, based on the scheduling information, one or more scheduling parameters for each component carrier of a set of component carriers for uplink communications with the base station; calculate, for each subframe of the set of subframes, a power adjustment of a maximum transmit power limit for each component carrier of the set of component carriers based on the one or more scheduling parameters, where a first power adjustment for a first component carrier of the set of component carriers is determined based on a second scheduling parameter of a second component carrier and a second power adjustment for the second component carrier is based on a first scheduling parameter of the first component carrier; and transmit, to the base station, uplink communications in each subframe using one or more component carriers of the set of component carriers, where a transmit power for each component carrier is based on the calculation.

[0011] In some examples of the method, apparatuses, and non-transitory computer- readable media described herein, the power adjustment can be based on scheduling information for the set of subframes indicating whether data is to be transmitted using each component carrier of the set of component carriers for each subframe. In some examples of the method, apparatuses, and non-transitory computer-readable media described herein, the power adjustment can be further based on a maximum allowed value of the power adjustment.

[0012] In some examples of the method, apparatuses, and non-transitory computer- readable media described herein can also include operations, features, means, or instructions for determining to request a maximum available UE transmit power for the first component carrier for the first subframe, and where the power adjustment provides power for the second component carrier and maintains a combined transmit power of the UE at or below a combined maximum transmit power limit of the UE.

[0013] In some examples of the method, apparatuses, and non-transitory computer- readable medium described herein, the computing can further include operations, features, means, or instructions for determining, based on a discontinuous reception configuration of the second component carrier, that the second component carrier is not scheduled for uplink communications in the first subframe, setting the second transmit power to zero for the first subframe based on the discontinuous reception configuration, and determining the power adjustment to the maximum transmit power limit for the first component carrier of the first subframe based on setting the second transmit power to zero for the first subframe. In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the first component carrier can be a primary component carrier configured by the base station, and the second component carrier can be a secondary component carrier configured by the base station. In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the first component carrier can be configured for a first RAT, and the second component carrier can be configured for a second RAT. In some examples, the first RAT and the second RAT can be accessed using different subscriber identity modules (SIMs) of the UE. In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the power adjustment can be based on a power class of the UE.

[0014] A method of wireless communication at a UE is described. The method can include determining whether the UE is configured for uplink communications using uplink carrier aggregation of a set of uplink component carriers, adjusting a maximum uplink transmit power for each component carrier of the set of uplink component carriers based on determining that the UE is configured for uplink communications using uplink carrier aggregation, and transmitting, to a base station, an uplink communication using at least a first component carrier of the set of component carriers using an uplink transmit power that is equal to or lower than the adjusted maximum uplink transmit power for the first component carrier.

[0015] An apparatus for wireless communication at a UE is described. The apparatus can include a processor, memory coupled with the processor, and instructions stored in the memory. The instructions can be executable by the processor to cause the apparatus to determine whether the UE is configured for uplink communications using uplink carrier aggregation of a set of uplink component carriers, adjust a maximum uplink transmit power for each component carrier of the set of uplink component carriers based on determining that the UE is configured for uplink communications using uplink carrier aggregation, and transmit, to a base station, an uplink communication using at least a first component carrier of the set of component carriers using an uplink transmit power that is equal to or lower than the adjusted maximum uplink transmit power for the first component carrier.

[0016] Another apparatus for wireless communication at a UE is described. The apparatus can include means for determining whether the UE is configured for uplink communications using uplink carrier aggregation of a set of uplink component carriers, adjusting a maximum uplink transmit power for each component carrier of the set of uplink component carriers based on determining that the UE is configured for uplink communications using uplink carrier aggregation, and transmitting, to a base station, an uplink communication using at least a first component carrier of the set of component carriers using an uplink transmit power that is equal to or below the adjusted maximum uplink transmit power for the first component carrier.

[0017] A non-transitory computer-readable medium storing code for wireless communication at a UE is described. The code can include instructions executable by a processor to determine whether the UE is configured for uplink communications using uplink carrier aggregation of a set of uplink component carriers, adjust a maximum uplink transmit power for each component carrier of the set of uplink component carriers based on determining that the UE is configured for uplink communications using uplink carrier aggregation, and transmit, to a base station, an uplink communication using at least a first component carrier of the set of component carriers using an uplink transmit power that is equal to or below the adjusted maximum uplink transmit power for the first component carrier.

[0018] In some examples of the method, apparatus, and non-transitory computer-readable medium described herein, adjusting the maximum uplink transmit power can include operations, features, means, or instructions for reducing a maximum transmit power limit for each of the two or more uplink component carriers by a maximum transmit power adjustment value for the UE. In some examples of the method, apparatus, and non-transitory computer-readable medium described herein, the maximum transmit power limit and the maximum transmit power adjustment value can be hardware-based parameters for the UE.

[0019] In some examples of the method, apparatus, and non-transitory computer-readable medium described herein, adjusting the maximum uplink transmit power for the first component carrier allows the UE to allocate transmit power to a second component carrier when the base station requests a maximum available transmit power for uplink transmissions of the first component carrier, and wherein a combined transmit power of the first component carrier and the second component carrier is maintained at or below a combined maximum transmit power limit for the UE. Some examples of the method, apparatus, and non-transitory computer-readable medium described herein can further include operations, features, means, or instructions for determining that the UE is reconfigured to remove the uplink carrier aggregation configuration and the uplink communication is to use a single component carrier and discontinuing the adjustment of the maximum uplink transmit power.

[0020] In some examples of the method, apparatuses, and non-transitory computer- readable medium described herein, adjusting the maximum uplink transmit power for each of the set of uplink component carriers can include operations, features, means, or instructions for applying a static hardware-based power adjustment to a maximum transmit power limit for each of the set of uplink component carriers. In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the first component carrier can be a primary component carrier configured by the base station, and the second component carrier of the set of component carriers can be a secondary component carrier configured by the base station. In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the first component carrier can be configured for a first RAT, and the second component carrier of the set of component carriers can be configured for a second RAT. In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, adjusting the maximum uplink transmit power can be further based on a power class of the UE. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 FIG. illustrates an example of a system for wireless communication that supports techniques for determining uplink power for multiple concurrent uplink transmissions in accordance with aspects of the present disclosure.

[0022] Figure 2 FIG. illustrates an example of a portion of a wireless communication system that supports techniques for determining uplink power for multiple concurrent uplink transmissions in accordance with aspects of the present disclosure.

[0023] Figure 3 And Figure 4 FIG. illustrates an example of a flow diagram that illustrates techniques for determining uplink power for multiple concurrent uplink transmissions in accordance with aspects of the present disclosure.

[0024] Figure 5 And Figure 6 FIG. shows a block diagram of a device that supports techniques for determining uplink power for multiple concurrent uplink transmissions in accordance with aspects of the present disclosure.

[0025] Figure 7 FIG. shows a block diagram of a communications manager that supports techniques for determining uplink power for multiple concurrent uplink transmissions in accordance with aspects of the present disclosure.

[0026] Figure 8 FIG. shows a diagram of a system including a device that supports techniques for determining uplink power for multiple concurrent uplink transmissions in accordance with aspects of the present disclosure.

[0027] Figures 9 to 13A flow diagram is shown illustrating a method that supports techniques for determining uplink power for multiple concurrent uplink transmissions in accordance with aspects of the present disclosure. DETAILED DESCRIPTION

[0028] Some wireless communication systems can have restrictions on the power at which a device can transmit. For example, a user equipment (UE) operating in a wireless communication system (e.g., a UE in a 4G or 5G wireless communication system) can have a maximum transmit power limit (MTPL), and the UE can be constrained to transmit at a power that does not exceed the MTPL. For example, given an MTPL cap of 25 dBm, a UE can have an MTPL of 23 dBm + / - 2 dBm. Such an MTPL can apply to the total transmit power of the UE, which can be the combined transmit power of two or more component carriers (CCs) when the UE is configured for uplink carrier aggregation.

[0029] In some cases, a base station or other network device can request that a UE increase or decrease the transmit power of one or more CCs based on one or more previous transmissions by the UE. For example, a base station can send a transmit power control (TPC) command to a UE to request an increased transmit power in cases where the base station detects a signal to interference and noise ratio (SINR) that is below a target value, and to request a decreased transmit power in cases where the SINR is above the target value. In cases where the SINR continues to be below a target SINR, the TPC commands can result in the base station requesting the maximum transmit power for a CC from the UE. In cases of uplink carrier aggregation, each CC can have its own MTPL value, and thus an MTPL value per carrier (e.g., 25 dBm / CC). Further, the combined MTPL is a limit on the total power that the UE can transmit in cases of uplink carrier aggregation (e.g., 25 dBm). Thus, in cases where the maximum transmit power for each of multiple CCs is requested (e.g., 25 dBm), the UE can not be able to transmit each CC at the requested maximum power, as such transmissions can result in a combined transmission power that exceeds the combined MTPL of the UE. In such cases, the UE can give priority to a CC containing uplink control information (UCI), such as a primary CC (PCC), and can not be able to transmit using any other of the multiple CCs while still adhering to the MTPL of the UE in cases where the requested transmit power of the PCC corresponds to the MTPL, which can result in a decrease in throughput.

[0030] In various aspects discussed herein, techniques provide for uplink power determination based on whether a UE is configured for carrier aggregation in which the UE can transmit multiple uplink CCs simultaneously. In some cases, when the UE is configured for uplink carrier aggregation, the UE can apply an adjustment to the MTPL parameter for one or more CCs. The MTPL adjustment can be a hardware-based parameter associated with the UE and can be applied to reduce the transmit power for one or more CCs, thereby providing power allocation across multiple CCs even in cases where maximum power is requested for one or more CCs (e.g., a PCC). Accordingly, such techniques prevent one or more other CCs (e.g., a secondary CC (SCC)) from having to have zero transmit power. In some cases, the UE can calculate the MTPL adjustment on a per-subframe basis based on scheduling parameters and the requested transmit power for each subcarrier. In some cases, a CC can be in a discontinuous transmission (DTX) state in which no transmission is made on the CC for a particular subframe, and the UE can adjust the MTPL value for one or more other carriers to allow for higher transmit power in the particular subframe.

[0031] In some cases, the UE can reduce the MTPL per CC by an MTPL adjustment value on a CC carrying UCI (e.g., a PCC), which can be referred to in some examples as a first CC. Such MTPL adjustment for the first CC can allow for some headroom for a second CC (e.g., an SCC) while still providing an aggregated transmit power for the UE that complies with the UE’s combined MTPL. In some cases, such MTPL adjustment is a static adjustment value applied to the first CC whenever carrier aggregation is configured at the UE.

[0032] In other cases, the UE can dynamically or subframe-by-subframe adjust the MTPL value for each of the multiple CCs when configured for carrier aggregation. For example, when each CC is in a DTX on duration according to a DTX configuration, MTPL adjustments can be made for both the first CC and the second CC, and when the second CC does not have a transmission in a subframe based on the DTX configuration, MTPL adjustments can be made for only the first CC. In such cases, the UE can calculate the adjustments to the MTPL values according to runtime subframe-based network scheduling parameters, and dynamically calculate the MTPL per carrier and the combined MTPL. In some cases, the manufacturer of the UE can specify a maximum MTPL adjustment limit, and the UE can dynamically calculate the MTPL adjustment accordingly. Using such dynamic adjustments, a first CC requesting maximum transmit power (e.g., a PCC) can be served concurrently with a second CC still provided with transmit power (e.g., an SCC). The first CC MTPL adjustments can be calculated for different subframes to provide higher transmit power in cases where the second CC does not have a transmission in the subframe. Thus, such techniques enhance UE operation by providing transmit power for multiple CCs, which improves the likelihood of successful communication. Moreover, such techniques can make such adjustments while remaining compatible with wireless communication standards set by one or more standards-setting organizations.

[0033] Various aspects of the subject matter described herein can be implemented to realize one or more of the following potential advantages. The techniques employed by the described UEs can provide benefits and enhancements for operation of wireless communication systems. For example, operations performed by the UEs can provide improvements in reliability and efficiency in communications by providing transmit power across multiple CCs for UEs operating in uplink carrier aggregation mode. Such improvements can enhance the efficiency of wireless communications at the UEs by allowing reliable communications on multiple CCs and also enhancing the likelihood of successful reception of communications at a receiving device. Thus, the described techniques can include features for improving communication reliability, increasing communication efficiency of UEs and other devices of wireless communication systems, and other benefits.

[0034] Aspects of the disclosure are initially described in the context of a wireless communications system. Various examples of power determination techniques are then discussed. Aspects of the disclosure are also illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts that relate to techniques for determining uplink power for multiple concurrent uplink transmissions.

[0035] Figure 1Example wireless communications system 100 that supports techniques for determining uplink power for multiple concurrent uplink transmissions in accordance with aspects of the present disclosure is shown. The wireless communications system 100 can include one or more base stations 105, one or more UEs 115, and a core network 130. In some examples, the wireless communications system 100 can be a Long Term Evolution (LTE) network, an LTE-Advanced (LTE-A) network, an LTE-A Pro network, or a New Radio (NR) network. In some examples, the wireless communications system 100 can support enhanced broadband communications, ultra-reliable (e.g., mission critical) communications, low latency communications, communications with low-cost and low-complexity devices, or any combination thereof.

[0036] The base stations 105 can be dispersed throughout the geographic region to form the wireless communications system 100 and can be of different forms or have different capabilities. The base stations 105 and the UEs 115 can wirelessly communicate via one or more communication links 125. Each base station 105 can provide communication coverage for a respective geographic area 110. The coverage area 110 for a base station 105 can be divided into sectors making up a portion of the coverage area 110. The wireless communications system 100 can include base stations 105 of different types, such as central unit (CU) base stations or distributed unit (DU) base stations.

[0037] The UEs 115 can be dispersed throughout the coverage areas 110 of the wireless communications system 100, and each UE 115 can be stationary, or mobile, or both at different times. The UEs 115 can be devices in different forms or having different capabilities. Figure 1 Some example UEs 115 are illustrated. The UEs 115 described herein can be able to communicate with various types of devices, such as other UEs 115, base stations 105, or network equipment (e.g., core network nodes, relay devices, integrated access and backhaul (IAB) nodes, or other network equipment), as shown in Figure 1

[0038] The base stations 105 can communicate with the core network 130, or with one another, or both. For example, the base stations 105 can interface with the core network 130 through one or more backhaul links 120 (e.g., via an SI, N2, N3, or other interface). The base stations 105 can communicate with one another over the backhaul links 120 (e.g., via an X2, Xn, or other interface) either directly (e.g., when in close proximity), or indirectly (e.g., through the core network 130), or both. In some examples, the backhaul links 120 can be or include one or more wireless links.​

[0039] One or more of the base stations 105 described herein can include or can be referred to as a base transceiver station, a radio base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB), a nextgeneration NodeB, or a giga-NodeB (either of which can be referred to as a gNB), a Home NodeB, a Home eNodeB, or other suitable terminology.

[0040] The UEs 115 can include or can be referred to as mobile devices, wireless devices, remote devices, handheld devices, or subscriber devices, or some other suitable terminology, where the “device” can also be referred to as a unit, a station, a terminal, or a client, among other examples. The UEs 115 can also include or can be referred to as personal electronic devices such as a cellular phone, a personal digital assistant (PDA), a tablet computer, a laptop computer, or a personal computer. In some examples, a UE 115 can include or be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communications (MTC) device, among other examples, which can be implemented in various objects such as appliances, or vehicles, meters, or instruments, among other examples.

[0041] The UEs 115 described herein can be able to communicate with various types of devices, such as other UEs 115 that can sometimes act as relays or devices such as the base stations 105 and the network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among other examples, as shown in Figure 1

[0042] The UEs 115 and the base stations 105 can wirelessly communicate with one another via one or more communication links 125 over one or more carriers. The term “carrier” can refer to a set of radio frequency spectrum resources with a defined physical layer structure for supporting communication links 125. For example, a carrier used for a communication link 125 can include a portion of an RF spectrum band (e.g., a frequency bandwidth portion) operating according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A Pro, NR). Each physical layer channel can carry acquisition signaling (e.g., synchronization signals, system information), control signaling, user data, or other signaling. The wireless communications system 100 can support communication with a UE 115 using carrier aggregation or multi-carrier operation. A UE 115 can be configured with multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation can be used with both frequency division duplexing (FDD) and time division duplexing (TDD) component carriers.

[0043] ​In some examples (e.g., in carrier aggregation configurations), a carrier can also have acquisition signaling or control signaling that coordinates operations of other carriers. A carrier can be associated with a frequency channel (e.g., an evolved universal mobile telecommunication system terrestrial radio access (E-UTRA) absolute radio frequency channel number (EARFCN)) and can be positioned based on a channel raster to facilitate discovery by UEs 115. A carrier can be operated in a standalone mode where initial acquisition and connection can be conducted via the carrier, or the carrier can be operated in a non- standalone mode where a connection is anchored using a different carrier (e.g., of the same or a different radio access technology).

[0044] The communication links 125 shown in wireless communication system 100 can include uplink transmissions from a UE 115 to a base station 105, or downlink transmissions from a base station 105 to a UE 115. Carriers can carry downlink or uplink communications (e.g., in an FDD mode), or can be configured to carry downlink and uplink communications (e.g., in a TDD mode).

[0045] A carrier can be associated with a particular bandwidth of the radio frequency spectrum, and in some examples the carrier bandwidth can be referred to as a “system bandwidth” of the carrier or wireless communications system 100. For example, the carrier bandwidth can be one of a number of determined bandwidths for carriers of a particular radio access technology (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 megahertz (MHz)). Devices of wireless communications system 100 (e.g., base stations 105, UEs 115, or both) can have hardware configurations that support communications over a particular carrier bandwidth, or can be configurable to support communications over one of a set of carrier bandwidths. In some examples, wireless communications system 100 can include base stations 105 or UEs 115 that support simultaneous communications via carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 can be configured to operate over portions (e.g., sub-bands, BWPs) or all of the carrier bandwidth.

[0046] Signal waveforms transmitted over a carrier can be composed of multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM)). In a system employing MCM techniques, a resource element can consist of one symbol period (e.g., a duration of one modulation symbol) and one subcarrier, where the symbol period and subcarrier spacing are inversely related. The number of bits carried by each resource element can depend on the modulation scheme (e.g., the order of the modulation scheme, the code rate of the modulation scheme, or both). Thus, the more resource elements that a UE 115 receives and the higher the order of the modulation scheme, the higher the data rates the UE 115 can achieve. A wireless communications resource can refer to a combination of a radio frequency spectrum resource, a time resource, and a spatial resource (e.g., spatial layers or beams), and the use of multiple spatial layers can further increase the data rate for communications with a UE 115.

[0047] Time intervals for a base station 105 or UE 115 can be expressed in multiples of a basic time unit, which may, for example, be a T s = 1 / (Δf max · N f ) second, where Δf max may represent the maximum supported subcarrier spacing, and N f may represent the maximum supported discrete fourier transform (DFT) size. Time intervals of a communications resource can be organized as radio frames, each

[0048] Each frame can include a plurality of consecutive numbered subframes or slots, and each subframe or slot can have the same duration. In some examples, (e.g., in the time domain) a frame can be divided into subframes, and each subframe can be further divided into a plurality of slots. Alternatively, each frame can include a variable number of slots, and the number of slots can depend on the subcarrier spacing. Each slot can include a plurality of symbol periods (e.g., depending on the length of the cyclic prefix prepended to each symbol period). In some wireless communications systems 100, slots can be further divided into mini-slots containing one or more symbols. Except for a cyclic prefix, each symbol period can contain one or more (e.g., N f ) sampling periods. The duration of a symbol period can depend on the subcarrier spacing or the operating band.

[0049] A subframe, a slot, a mini-slot, or a symbol can be the smallest scheduling unit (e.g., in the time domain) of the wireless communications system 100 and can be referred to as a transmission time interval (TTI). In some examples, the TTI duration (i.e., the number of symbol periods in a TTI) can be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communications system 100 (e.g., in a burst of shortened TTIs (sTTIs)) can be dynamically selected.

[0050] Physical channels can be multiplexed on a carrier according to various techniques. A physical control channel and a physical data channel can be multiplexed on a downlink carrier, for example, using one or more time-division multiplexing (TDM) techniques, frequency-division multiplexing (FDM) techniques, or hybrid TDM-FDM techniques. A control region (e.g., a control resource set (CORESET)) for a physical control channel can be defined by a number of symbol periods and can extend for one or more symbol periods in the time domain. One or more control regions (e.g., CORESETs) can be configured for a set of UEs 115. For example, one or more UEs 115 can monitor or search control regions for control information according to one or more search space sets, and each search space set can include one or more control channel candidates arranged in the time domain in one or more aggregation levels. An aggregation level for a control channel candidate can refer to a number of control channel resources (e.g., control channel elements (CCEs)) associated with encoded information for a control information format having a given payload size. Search space sets can include common search space sets configured for sending control information to multiple UEs 115 and UE-specific search space sets configured for sending control information to a specific UE 115.

[0051] Each base station 105 can provide communication coverage for one or more cells, e.g., macro cells, small cells, hot spots, or other types of cells or any combination thereof. The term “cell” can refer to a logical communication entity used for communication with a base station 105 (e.g., through a carrier) and can be associated with a identifier, such as a physical cell identifier (PCID), a virtual cell identifier (VCID), or otherwise, used to distinguish neighboring cells. In some examples, the cell can also refer to the geographical coverage area 110 or a subset of the geographical coverage area 110 (e.g., a sector) over which a logical communication entity operates. Depending on various factors such as capacity requirements, scheduling, and / or interference management, the range of the cell, which can be referred to as a range balloon, can vary from a small area (e.g., a structure, a subset of a structure) to a large area (e.g., a building, a subset of a building, or an outdoor space that is between or overlaps with the geographical coverage areas 110).

[0052] In some examples, a base station 105 can be movable and therefore provide communication coverage for a moving geographic coverage area 110. In some examples, different geographic coverage areas 110 associated with different technologies can overlap, but the different geographic coverage areas 110 can be supported by the same base station 105. In other examples, overlapping geographic coverage areas 110 associated with different technologies can be supported by different base stations 105. The wireless communications system 100 can include, for example, a heterogeneous network in which different types of the base stations 105 provide coverage for various geographic coverage areas 110 using the same or different radio access technologies.

[0053] Some UEs 115, such as MTC or IoT devices, can be low cost or low complexity devices, and can provide for automated communication between machines (e.g., via machine-to-machine (M2M) communication). M2M communication or MTC can refer to data communication technologies that allow devices to communicate with one another or a base station 105 without the need for human intervention. In some examples, M2M communication or MTC can include communications from devices that integrate sensors or meters to measure or capture information and relay such information to a central server or application program that makes use of the information or presents the information to humans in interaction with the application program. Some UEs 115 can be designed to collect information or enable automated behavior of machines or other devices. Examples of applications for MTC devices include smart metering, inventory monitoring, water level monitoring, equipment monitoring, healthcare monitoring, wildlife monitoring, weather and geological event monitoring, fleet management and tracking, remote security sensing, physical access control, and transaction-based business charging.

[0054] The wireless communications system 100 can be configured to support ultra-reliable communications or low-latency communications, or various combinations thereof. For example, the wireless communications system 100 can be configured to support ultra-reliable low-latency communications (URLLC) or mission critical communications. UEs 115 can be designed to support ultra-reliable, low-latency, or mission critical functions (e.g., mission critical function). Ultra-reliable communications can include private communication or group communication, and can be supported by one or more mission critical services such as mission critical push-to-talk (MCPTT), mission critical video (MCVideo), or mission critical data (MCData). Support for mission critical functions can include prioritization of services, and the mission critical services can be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, mission critical, and ultra-reliable low- latency can be used interchangeably herein.

[0055] In some examples, UEs 115 can also be able to communicate directly with other UEs 115 through device-to-device (D2D) communication link 135 (e.g., using a peer-to-peer (P2P) or D2D protocol). One or more UEs 115 utilizing D2D communications can be within the geographic coverage area 110 of a base station 105. Other UEs 115 in such a group can be outside the geographic coverage area 110 of a base station 105 or be otherwise unable to receive transmissions from a base station 105. In some examples, groups of UEs 115 communicating via D2D communications can utilize a one-to-many (1 :M) system in which each UE 115 transmits to every other UE 115 in the group. In some examples, a base station 105 facilitates the scheduling of resources for D2D communications. In other cases, D2D communications are carried out between UEs 115 without the involvement of a base station 105.

[0056] In some systems, D2D communication link 135 can be an example of a communication channel (such as a sidelink communication channel) between vehicles (e.g., UEs 115). In some examples, vehicles can communicate using vehicle-to-everything (V2X) communications, car-to-car (V2V) communications, or some combination of these. A vehicle can signal information related to traffic conditions, signal scheduling, weather, safety, emergencies, or any other information related to V2X systems. In some examples, vehicles in a V2X system can communicate with roadside infrastructure, such as roadside units, or with the network via one or more network nodes (e.g., base stations 105) using vehicle-to-network (V2N) communications, or with both.

[0057] The core network 130 can provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network 130 can be an evolved packet core (EPC) or 5G core (5GC), which can include at least one control plane entity that manages access and mobility (e.g., a mobility management entity (MME), an access and mobility management function (AMF)) and at least one user plane entity that routes packets or interconnects to external networks, such as a serving gateway (S-GW), a packet data network (PDN) gateway (P-GW), or a user plane function (UPF). The control plane entity can manage non-access stratum (NAS) functions such as mobility, authentication, and bearer management for UEs 115 served by base stations 105 associated with the core network 130. User IP packets can be transferred through the user plane entity, which can provide IP address allocation as well as other functions. The user plane entity can be connected to the network

[0058] Some of the network devices, such as a base station 105, can include subcomponents such as an access network entity 140, which can be an example of an access node controller (ANC). Each access network entity 140 can communicate with UEs 115 through one or more other access network transmission entities 145, which can be referred to as radio heads, smart radio heads, or transmission / reception points (TRPs). Each access network transmission entity 145 can include one or more antenna panels. In some configurations, various functions of each access network entity 140 or base station 105 can be distributed across various network devices (e.g., radio heads and ANCs) or consolidated into a single network device (e.g., a base station 105).

[0059] The wireless communications system 100 can operate using one or more frequency bands, typically in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). Generally, the region from 300 MHz to 3 GHz is known as the ultra-high frequency (UHF) region or decimeter band, since the wavelengths range from approximately one decimeter to one meter in length. UHF waves can be blocked or redirected by buildings and environmental features, but the waves can penetrate structures sufficiently for a macro cell to provide service within an indoor location. Transmission of UHF waves may

[0060] The wireless communications system 100 can also operate in a super high frequency (SHF) region using frequency bands from 3 GHz to 30 GHz, also known as centimeter band. In some examples, the wireless communications system 100 can support millimeter wave (mmW) communications between the UEs 115 and the base stations 105, and EHF antennas of the respective devices can be smaller and more closely spaced than UHF antennas. In some examples, this can facilitate use of antenna arrays within a device. However, the propagation of EHF transmissions can be subject to even greater atmospheric attenuation than SHF transmissions, and EHF transmissions can therefore generally have a shorter range than SHF transmissions. Techniques disclosed herein can be employed across transmissions that use one or more different frequency regions, and designated use of bands across these frequency regions can differ by country or regulatory agency.

[0061] The wireless communications system 100 can utilize both licensed and unlicensed radio frequency spectrum bands. For example, the wireless communications system 100 can employ License Assisted Access (LAA), LTE-Unlicensed (LTE-U) radio access technology, or NR technology in an unlicensed frequency spectrum band such as the 5 GHz industrial, scientific and medical (ISM) band. When operating in unlicensed frequency spectrum bands, access points 105 and UEs 115 such as base stations 105 and UEs 115 can employ carrier sensing for collision detection and avoidance. In some examples, operations in unlicensed frequency spectrum bands can be based on a carrier aggregation configuration in combination with a component carrier operating in a licensed frequency spectrum band (e.g., LAA). Operations in licensed frequency spectrum bands can include downlink transmissions, uplink transmissions, P2P transmissions, D2D transmissions, or the like.

[0062] The base stations 105 or UEs 115 can be equipped with multiple antennas, which can be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of a base station 105 or a UE 115 can be co-located within one or more antenna arrays or antenna panels, which can support MIMO operations or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays can be located at the base station 105 in a co-located manner, such as at an antenna tower. In some examples, the antennas or antenna arrays associated with a base station 105 can be located in different geographic locations. A base station 105 can have an antenna array with a number of rows and columns of antenna ports that can be used to support beamforming of communications to UEs 115. Likewise, a UE 115 can have one or more antenna arrays that can support various MIMO or beamforming operations. Additionally or alternatively, antenna panels can support radio frequency beamforming of signals transmitted via antenna ports.

[0063] The base stations 105 or UEs 115 can use MIMO communications to exploit multipath signal propagation and increase the spectral efficiency. Such techniques can be referred to as spatial multiplexing. The multiple signals may, for example, be transmitted by the transmitting device via different antennas or different combinations of antennas. Similarly, the multiple signals can be received by the receiving device via different antennas or different combinations of antennas. Each of the multiple signals can be referred to as a separate spatial stream, and can carry bits associated with the same data stream (e.g., a same codeword) or different data streams (e.g., different codewords). Different spatial layers can be associated with different antenna ports used for channel measurement and reporting. MIMO techniques include single-user MIMO (SU-MIMO), where multiple spatial layers are transmitted to the same receiving device, and multiple-user MIMO (MU-MIMO), where multiple spatial layers are transmitted to multiple devices.

[0064] Beamforming, which can also be referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that can be used at a transmitting device or a receiving device (e.g., a base station 105, a UE 115) to shape or steer the beam over the space. Beamforming can be achieved by combining the signals communicated by antennas of an antenna array such that signals at particular orientations experience constructive interference while others experience destructive interference. The combination of signals can be performed according to a beamforming weight set applied to the signals by the antenna array. The beamforming weight set can define the relative amplitudes and phases of the signals communicated by each of the antennas. The beamforming weight set applied by a particular antenna array can be defined according to a particular orientation.

[0065] The wireless communications system 100 can be a packet-based network that operates according to a layered protocol stack. In the user plane, communications at the bearer or Packet Data Convergence Protocol (PDCP) layer can be IP -based. A Radio Link Control (RLC) layer can perform packet segmentation and reassembly to communicate over logical channels. A Medium Access Control (MAC) layer can perform priority handling and multiplexing of logical channels into transport channels. The MAC layer can also use error detection techniques, error correction techniques, or both, to support retransmissions at the MAC layer to improve link efficiency. In the control plane, the Radio Resource Control (RRC) protocol layer can provide establishment, configuration, and maintenance of an RRC connection between a UE 115 and a base station 105 or a core network 130 supporting radio bearers for user plane data. At the physical layer, transport channels can be mapped to physical channels.

[0066] The UEs 115 and the base stations 105 can support retransmissions of data to increase the likelihood that data is received successfully. HARQ feedback is one technique of increasing the likelihood that data is received correctly over a communication link 125. HARQ can include a combination of error detection (e.g., using a cyclic redundancy check (CRC)), forward error correction (FEC), and retransmission (e.g., automatic repeat request (ARQ)). HARQ can improve throughput at the MAC layer in poor radio

[0067] In some cases, one or more UEs 115 can be configured for carrier aggregation, where multiple uplink CCs can be transmitted by the UE 115 concurrently. In some cases, when the UE 115 is configured for uplink carrier aggregation, the UE 115 can apply an adjustment to the MTPL for one or more CCs. When maximum transmit power is requested for a CC, the MTPL adjustment can be applied to reduce the transmit power of one of the CCs. The MTPL adjustment can reduce the transmit power to less than the MTPL of the UE 115, thus providing that one or more other CCs can still have some transmit power. In some cases, the UE 115 can calculate the amount of MTPL adjustment on a per-subframe basis based on the scheduling parameters and the requested transmit power for each CC. In some cases, a CC can be in a DTX state, where no transmission is made on the CC for a particular subframe, and the UE 115 can adjust the MTPL value of one or more other carriers to allow for higher transmit power in the particular subframe.

[0068] Figure 2 A wireless communications system 200 that supports techniques for determining uplink power for multiple concurrent uplink transmissions is illustrated in accordance with aspects of the present disclosure. In some examples, wireless communications system 200 can implement aspects of wireless communications system 100. Wireless communications system 200 can include base station 105-a and UE 115-a, which can be examples of the base stations 105 and UEs 115 described with reference to Figure 1 Examples of the base stations 105 and UEs 115 described.

[0069] In this example, UE 115-a can be configured for carrier aggregation and use multiple uplink CCs 205 for uplink communication with base station 105-a. In this example, a first uplink CC 205-a, a second uplink CC 205-b, and a third uplink CC 205-c can be configured for communication, although more or fewer uplink CCs 205 can be configured in other cases. Downlink communication from base station 105-a to UE 115-a can use downlink CCs 210. While a single downlink CC 210 is illustrated in Figure 2 FIG. 16, in other cases, downlink carrier aggregation can be configured with multiple CCs. Moreover, while various examples discussed herein reference multiple uplink CCs 205 for communication with a single base station, the techniques discussed herein can apply in cases where different CCs provide communication with different base stations or cells, cases where different CCs can provide communication with different radio access networks, cases where different CCs can provide communication with different radio access technologies (e.g., 4G, 5G, etc.), or any combination thereof.

[0070] The base station 105-a can configure the uplink CCs 205 and the downlink CCs 210 as part of a connection establishment procedure and can transmit configuration / scheduling information 215 to the UE 115-a (e.g., including configuration information for communicating with the base station 105-a, resource grants for uplink or downlink communications, DTX configuration information, etc.). In some cases, the UE 115-a can determine an uplink transmit power for each uplink CC 205 based on a UE 115-a configuration, a requested transmit power, and one or more power adjustment parameters. In some cases, the UE 115-a can make different power adjustment determinations based on whether carrier aggregation is configured at the UE 115-a. In some cases, when the UE 115-a is configured for uplink carrier aggregation, the UE 115-a can apply an adjustment to the MTPL parameter for one or more of the uplink CCs 205. The MTPL adjustment can be a hardware-based parameter associated with the UE 115-a (e.g., based on capabilities and tolerances of components of a transceiver chain of the UE 115-a set by a manufacturer of the UE 115-a) and can be applied to reduce a transmit power for one or more of the uplink CCs 205 to provide a power distribution across multiple uplink CCs 205 even in cases where a maximum power is requested for one or more of the uplink CCs 205 (e.g., a PCC). In some cases, the UE 115-a can calculate the MTPL adjustment on a per-subframe basis based on a scheduling parameter and a requested transmit power for each CC. In some cases, one or more of the uplink CCs 205 (e.g., a second uplink CC 205-b and a third uplink CC 205-c) can be in a discontinuous transmission (DTX) state in which no transmission is made for a particular subframe, and the UE can adjust the MTPL value for one or more other carriers to allow for a higher transmit power in that particular subframe (e.g., removing the MTPL adjustment for the first uplink CC 205-a).

[0071] In a first example, a static MTPL adjustment can be configured, the first uplink CC 205-a can be a PCC on a first frequency band (e.g., LTE Band 1) and can have an MTPL value of 25 dBm. The second uplink CC 205-b can be a SCC on a second frequency band (e.g., LTE Band 3) and can have an MTPL value of 25 dBm. In this example, no third uplink CC 205-c is configured. Further, the UE 115-a can be configured with an MTPL adjustment value of 0.8 dBm, which is a static adjustment applied in the case that the UE 115-a is configured with carrier aggregation. In this example, the UE 115-a's combined MTPL can be set to 25 dBm. The UE 115-a can apply the MTPL adjustment value to each uplink CC 205 to yield an adjusted MTPL of 24.2 dBm for each uplink CC 205.

[0072] In one case, the base station 105-a can request a transmit power of 25 dBm on the first uplink CC 205-a and the second uplink CC 205-b. Based on the requested transmit power and the adjusted MTPL, the UE 115-a can set the transmit power of the first uplink CC 205-a to 24.2 dBm and can allocate the UE 115-a's remaining available power to the second uplink CC 205-b, resulting in the transmit power of the second uplink CC 205-b being set to 17.2 dBm (due to the logarithmic value of the transmit power). In another case, the base station 105-a can request a transmit power of 25 dBm on the first uplink CC 205-a and no transmit power on the second uplink CC 205-b (e.g., due to a DTX configuration). In such a case, the UE 115-a can determine the transmit power of the first uplink CC 205-a to be 24.2 dBm and no transmit power for the second uplink CC 205-b. In this case, due to the static value of the MTPL adjustment, the first uplink CC 205-a has a transmit power set to 24.2 dBm even though no other uplink CC 205 is transmitting.

[0073] In a second example, dynamic MTPL adjustment can be configured, the first uplink CC 205-a can be a PCC on a first frequency band (e.g., LTE Band 1) and can have an MTPL value of 25 dBm. The second uplink CC 205-b can be a SCC on a second frequency band (e.g., LTE Band 3) and can have an MTPL value of 25 dBm. In this example, no third uplink CC 205-c is configured. Further, the UE 115-a can be configured with a maximum MTPL adjustment value of 0.8 dBm for dynamic adjustment applied on a per-subframe (or other time interval such as per-slot) basis when the UE 115-a is configured with carrier aggregation. In this example, the UE 115-a's combined MTPL can be set to 25 dBm. The UE 115-a can apply the MTPL adjustment value to each uplink CC 205 at runtime to determine the uplink power.

[0074] In one case, the base station 105-a can request 25 dBm of transmit power on both uplink CCs 205. The UE 115-a can calculate the MTPL adjustment value to be 0.8 dBm because both carriers are requesting maximum transmit power. Based on the requested transmit power and the adjusted MTPL, the UE 115-a can set the transmit power of the first uplink CC 205-a to 24.2 dBm and can allocate the UE 115-a's remaining available power to the second uplink CC 205-b, setting the transmit power of the second uplink CC 205-b to 17.2 dBm.

[0075] In another case, the base station 105-a can request 25 dBm of transmit power on the first uplink CC 205-a and no transmit power on the second uplink CC 205-b (e.g., due to DTX configuration). In this case, the UE 115-a can determine that the MTPL adjustment on both carriers is 0 dBm because the second uplink CC 205-b did not receive power, so there is no need to adjust the transmit power of the first uplink CC 205-a. In this case, the first uplink CC 205-a transmits at a higher power than the power that would occur in the example using static MTPL adjustment.

[0076] In another case, the base station 105-a can request a transmit power of 25 dBm on the first uplink CC 205-a and a transmit power of 15 dBm on the second uplink CC 205-b, and the UE 115-a can have a combined MTPL of 25 dBm. In this case, the adjustment to the MTPL for the first uplink CC 205-a can be calculated as 0.46 dBm. Such a calculation can be based on a calculated transmit power in watts that is equal to the combined MTPL minus the requested transmit power on the second uplink CC 205-b (e.g., PCC tx power = combined MTPL - SCC requested tx power in watts). The adjusted MTPL can be calculated as the combined MTPL minus the calculated transmit power for the first uplink CC 205-a (e.g., MTPL ADJUST in dBm = (combined MTPL - PCC calculated tx power)). In such a case, the UE 115-a can then set the transmit power to 24.54 dBm on the first uplink CC 205-a and 15 dBm on the second uplink CC 205-b, such techniques can thus enhance the use of the maximum available headroom for the first uplink CC 205-a while providing transmit power for the second uplink CC 205-b. Note that in the above example using static MTPL adjustment, the parameters of such a case would result in the first uplink CC 205-a having a transmit power of 24.2 dBm and the second uplink CC 205-b having a transmit power of 15 dBm.

[0077] Figure 3 FIGURE 1 illustrates an example of a flow diagram 300 that supports techniques for determining uplink power for multiple concurrent uplink transmissions in accordance with aspects of the present disclosure. In some examples, flow diagram 300 can implement aspects of wireless communication systems 100 or 200. The operations of flow diagram 300 can be performed by a UE as discussed herein (e.g., by an uplink power manager of a wireless modem of the UE). In some examples, the UE can execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE can perform aspects of the described functions using special-purpose hardware. Although this example shows various operations in a particular order, in other examples, the operations can be performed in a different order, and various operations can be combined or separated into individual operations.

[0078] At 305, the UE can identify configuration or reconfiguration information provided by the base station. In some cases, the configuration or reconfiguration information can be received by the UE as part of an RRC setup or reestablishment procedure in which the UE is configured to communicate using one or more CCs. In other cases, the configuration or reconfiguration information can be received in control information provided by the base station (e.g., in downlink control information, in a medium access control (MAC) control element, or other control information that can be provided to the UE).

[0079] At 310, the UE can determine whether uplink carrier aggregation is configured. Such a determination can be based on configuration information provided to the UE, which can indicate various parameters associated with the configured CCs. If it is determined that uplink carrier aggregation is not configured, then at 315, the UE can determine not to apply an MTPL adjustment for uplink transmissions.

[0080] If it is determined that uplink carrier aggregation is configured, then at 320, the UE can reduce the per-carrier MTPL by an MTPL adjustment amount. In some cases, the MTPL adjustment amount can be an adjustment value that is configured at the UE. In some cases, the MTPL adjustment amount can be a hardware-based adjustment value that is set by a manufacturer of the UE based on various UE components and associated tolerances.

[0081] At 325, the UE can transmit uplink communications using the per-carrier maximum transmit power adjusted by the MTPL adjustment amount. Thus, in this example, the UE can apply a static MTPL adjustment amount for each CC when it is determined that the UE is operating in a carrier aggregation mode. In other examples discussed herein, dynamic MPTL adjustments can be performed, and examples of which are discussed with reference to Figure 4

[0082] Figure 4 FIG. 13 illustrates an example of a process flow 1300 that supports techniques for determining uplink power for multiple concurrent uplink transmissions in accordance with aspects of the present disclosure. In some examples, process flow 1300 can implement aspects of wireless communication systems 100 or 200. The operations of process flow 1300 can be executed by a UE as discussed herein (e.g., by an uplink power manager of a wireless modem of the UE). In some examples, the UE can execute a set of instructions to control the functional units of the UE to perform the described functions. Additionally or alternatively, the UE can perform aspects of the described functions using special-purpose hardware. Although this example shows various operations in a particular order, in other examples, the operations can be performed in a different order, and various operations can be combined or separated into individual operations.

[0083] ​At 405, the UE can identify configuration or reconfiguration information provided by the base station. In some cases, the configuration or reconfiguration information can be received by the UE as part of an RRC setup or reestablishment procedure in which the UE is configured for communication using one or more CCs. In other cases, the configuration or reconfiguration information can be received in control information provided by the base station (e.g., in downlink control information, in a medium access control (MAC) control element, or other control information that can be provided to the UE).

[0084] At 410, the UE can determine whether uplink carrier aggregation is configured. Such a determination can be based on configuration information provided to the UE, which can indicate various parameters associated with the configured CCs. If it is determined that uplink carrier aggregation is not configured, then at 415, the UE can determine not to apply MTPL adjustment for uplink transmissions.

[0085] If it is determined that uplink carrier aggregation is configured, then at 420, the UE can identify scheduling information provided by the base station starting from an initial subframe (or other time period, such as from an initial time slot). The scheduling information can include information regarding resource allocation for each CC, modulation and coding applied to each CC, DTX configuration information for each CC, and the like.

[0086] At 425, the UE can determine scheduling parameters and requested transmit power for each CC for a subframe (e.g., subframe n). The scheduling parameters can be provided in the scheduling information, determined based on the scheduling information, or a combination thereof. For example, the scheduling parameters can include an indication of the requested transmit power, a DTX status for each CC based on a DTX configuration indicated in the scheduling information, and a modulation order for each CC.

[0087] At 430, the UE can determine whether the combined MTPL of the UE is exceeded for the subframe (e.g., subframe n). Such a determination can be based on the requested transmit power for each CC for the subframe. For example, if each of a first CC and a second CC requests 15 dBm of transmit power, the UE can determine that the combined MTPL of the UE is not exceeded. In another example, the UE can determine that a first CC is to transmit in the subframe, but other CC(s) are not to transmit due to a DTX configuration, and thus determine that the combined MTPL of the UE is not exceeded. However, if each of the first CC and the second CC requests 25 dBm of transmit power, the UE can determine that the combined MTPL of the UE is exceeded.

[0088] If it is determined that the MTPL of the UE is not exceeded for the subframe, at 435, the UE can determine not to apply the MTPL adjustment for the subframe. If it is determined that the MTPL of the UE is exceeded for the subframe, at 440, the UE can calculate the MTPL adjustment and transmit power for each CC based on the requested transmit power for each CC. Such calculation of the MTPL adjustment and transmit power for each CC can be performed according to the techniques discussed herein, which takes into account the scheduling parameters (e.g., requested transmit power) of each other CC.

[0089] At 445, the UE can transmit uplink communications for the subframe using the calculated transmit power for each CC. At 450, the UE can increment the subframe for the continued running determination of transmit power and MTPL adjustment for a subsequent subframe. At 455, the UE can determine whether there is new configuration or scheduling information at the UE. In the absence of new scheduling or configuration information, the operations at 425 can be performed. In the presence of new configuration or scheduling information, the operations at 405 can be performed.

[0090] Figure 5 A block diagram 500 of a device 505 that supports techniques for determining uplink power for multiple concurrent uplink transmissions in accordance with aspects of the present disclosure is shown. The device 505 can be an example of aspects of a UE 115 as described herein. The device 505 can include a receiver 510, a communications manager 515, and a transmitter 520. The device 505 can also include a processor. Each of these components can be in communication with one another (e.g., via one or more buses).

[0091] The receiver 510 can receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to techniques for determining uplink power for multiple concurrent uplink transmissions, etc.). Information can be passed on to other components of the device 505. The receiver 510 can be an example of aspects of the transceiver 820 described with reference to Figure 8 The receiver 510 can receive information such as packets, user data or control information associated with various information channels (e.g., control channels, data channels, and information related to techniques for determining uplink power for multiple concurrent uplink transmissions, etc.). Information can be passed on to other components of the device 505. The receiver 510 can be an example of aspects of the transceiver 820 described with reference to

[0092] The communications manager 515 can receive, from a base station, scheduling information for a set of subframes, determine, based on the scheduling information, one or more scheduling parameters for each component carrier of a set of component carriers for uplink communications with the base station, calculate, for each subframe of the set of subframes, a power adjustment for a maximum transmit power limit for each component carrier of the set of component carriers based on the one or more scheduling parameters, where a first power adjustment for a first component carrier of the set of component carriers is determined based on a second scheduling parameter of a second component carrier and a second power adjustment for the second component carrier is based on a first scheduling parameter of the first component carrier, and transmit, to the base station, uplink communications in each subframe using one or more component carriers of the set of component carriers, where a transmit power for each component carrier is based on the calculation.

[0093] The communications manager 515 can also determine whether the UE is configured for uplink communications using uplink carrier aggregation of a set of uplink component carriers, adjust a maximum uplink transmit power for each component carrier of the set of uplink component carriers based on determining that the UE is configured for uplink communications using uplink carrier aggregation, and transmit, to the base station, uplink communications using at least a first component carrier of the set of component carriers using an uplink transmit power that is equal to or lower than the adjusted maximum uplink transmit power of the first component carrier. The communications manager 515 can be an example of aspects of the communications manager 810 described herein.

[0094] The communications manager 515 as described herein can implement one or more potential advantages. One implementation can allow the device 505 to provide transmit power across multiple CCs for UEs operating in an uplink carrier aggregation mode. Such operations can provide improvements in reliability and efficiency of communications over multiple CCs. Such improvements can enhance the efficiency of wireless communications at the UE by allowing transmit power determinations based on the UE’s carrier aggregation status, particular transmit parameters for each of a number of subframes, or a combination thereof. As a result, the supported techniques can provide improvements in reliability of communications, as well as enhanced communication efficiency for UEs and other devices of a wireless communications system, among other benefits.

[0095] The communications manager 515, or its sub-components, can be implemented in hardware, code (for example, software or firmware) executed by a processor, or any combination thereof. If implemented in code executed by a processor, the functions of the communications manager 515, or its sub-components can be executed by a general-purpose processor, a DSP, an application-specific integrated circuit (ASIC), a FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in the present disclosure.

[0096] The communications manager 515, or its sub-components, can be physically located in various locations, including being distributed such that portions of functions are implemented at different physical locations by one or more physical components. In some examples, the communications manager 515, or its sub-components, can be a separate and distinct component in accordance with various aspects of the present disclosure. In some examples, the communications manager 515, or its sub-components, can be combined with one or more other hardware components, including but not limited to an input / output (I / O) component, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof in accordance with various aspects of the present disclosure.

[0097] The transmitter 520 can transmit signals generated by other components of the device 505. In some examples, the transmitter 520 can be collocated with a receiver 510 in a transceiver module. For example, the transmitter 520 can be an example of aspects of the transmitter 820 described with reference to FIG. 8. The transmitter 520 can utilize a single antenna or a set of antennas. Figure 8 The transmitter 520 can transmit signals generated by other components of the device 505. In some examples, the transmitter 520 can be collocated with a receiver 510 in a transceiver module. For example, the transmitter 520 can be an example of aspects of the transmitter 820 described with reference to FIG. 8. The transmitter 520 can utilize a single antenna or a set of antennas.

[0098] Figure 6 FIG. 6 illustrates a block diagram of a device 605 that supports techniques for determining uplink power for multiple concurrent uplink transmissions in accordance with aspects of the present disclosure. The device 605 can be an example of aspects of a device 505 or a UE 115 as described herein. The device 605 can include a receiver 610, a communications manager 615, and a transmitter 640. The device 605 can also include a processor. Each of these components can be in communication with one another (e.g., via one or more buses).

[0099] The receiver 610 can receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to techniques for determining uplink power for multiple concurrent uplink transmissions, etc.). Information can be passed on to other components of the device 605. The receiver 610 can be an example of aspects of the transceiver 820 described with reference to FIG. 8. The receiver 610 can utilize a single antenna or a set of antennas. Figure 8 The receiver 610 can receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to techniques for determining uplink power for multiple concurrent uplink transmissions, etc.). Information can be passed on to other components of the device 605. The receiver 610 can be an example of aspects of the transceiver 820 described with reference to FIG. 8. The receiver 610 can utilize a single antenna or a set of antennas.

[0100] The communications manager 615 can be an example of aspects of the communications manager 515 as described herein. The communications manager 615 can include a carrier aggregation manager 620, a scheduling parameter manager 625, an uplink power manager 630, and an uplink transmission manager 635. The communications manager 615 can be an example of aspects of the communications manager 810 described herein.

[0101] In some cases, the carrier aggregation manager 620 can receive, from a base station, scheduling information for a set of subframes. The scheduling parameter manager 625 can determine, based on the scheduling information, one or more scheduling parameters for each of a set of component carriers for uplink communications with the base station. The uplink power manager 630 can calculate, based on the one or more scheduling parameters, a power adjustment to a maximum transmit power limit for each of the set of component carriers for each of the set of subframes, where a first power adjustment for a first component carrier of the set of component carriers is determined based on a second scheduling parameter of a second component carrier, and a second power adjustment for the second component carrier of the set of component carriers is based on a first scheduling parameter of the first component carrier. The uplink transmission manager 635 can transmit, to the base station, the uplink communications in each of the subframes using one or more of the set of component carriers, where a transmit power for each component carrier is based on the calculation.

[0102] In some cases, the carrier aggregation manager 620 can determine whether the UE is configured for uplink communications using uplink carrier aggregation of a set of uplink component carriers. The uplink power manager 630 can adjust a maximum uplink transmit power for each of the set of uplink component carriers based on a determination that the UE is configured for uplink communications using uplink carrier aggregation. The uplink transmission manager 635 can transmit, to the base station, the uplink communications using at least a first component carrier of the set of component carriers using an uplink transmit power that is equal to or lower than the adjusted maximum uplink transmit power of the first component carrier.

[0103] The transmitter 640 can transmit signals generated by other components of the device 605. In some examples, the transmitter 640 can be collocated with a receiver 610 in a transceiver module. For example, the transmitter 640 can be an example of aspects of the transceiver 820 described with reference to FIG. 8. The transmitter 640 can utilize a single antenna or a set of antennas. Figure 8 The transmitter 640 can transmit signals generated by other components of the device 605. In some examples, the transmitter 640 can be collocated with a receiver 610 in a transceiver module. For example, the transmitter 640 can be an example of aspects of the transceiver 820 described with reference to FIG. 8. The transmitter 640 can utilize a single antenna or a set of antennas.

[0104] Figure 7 A block diagram 700 of a communications manager 705 that supports techniques for determining uplink power for multiple concurrent uplink transmissions in accordance with aspects of the present disclosure is shown. The communications manager 705 can be an example of aspects of a communications manager 515, a communications manager 615, or a communications manager 810 described herein. The communications manager 705 can include a carrier aggregation manager 710, a scheduling parameter manager 715, an uplink power manager 720, an uplink transmission manager 725, and a DRX manager 730. Each of these modules can communicate, directly or indirectly, with one another (e.g., via one or more buses).

[0105] The carrier aggregation manager 710 can receive, from a base station, scheduling information for a set of subframes. In some examples, the carrier aggregation manager 710 can determine whether the UE is configured for uplink communications using uplink carrier aggregation of a set of uplink component carriers. In some cases, the first component carrier is a primary component carrier configured by the base station and the second component carrier is a secondary component carrier configured by the base station. In some cases, the first component carrier is configured for a first RAT and the second component carrier is configured for a second RAT. In some cases, the first RAT and the second RAT are accessed using different SIMs of the UE.

[0106] In some examples, the carrier aggregation manager 710 can determine that the UE is reconfigured to remove the uplink carrier aggregation configuration and that the uplink communications will use a single component carrier. In some examples, the carrier aggregation manager 710 can discontinue the adjustment of the maximum uplink transmit power.

[0107] The scheduling parameter manager 715 can determine, based on the scheduling information, one or more scheduling parameters for each component carrier of the set of component carriers for uplink communications with the base station.

[0108] The uplink power manager 720 can calculate, based on the one or more scheduling parameters, a power adjustment to a maximum transmit power limit for each component carrier of the set of component carriers for each subframe of the set of subframes, where a first power adjustment for a first component carrier of the set of component carriers is determined based on a second scheduling parameter of a second component carrier and a second power adjustment for a second component carrier of the set of component carriers is based on a first scheduling parameter of the first component carrier. In some examples, the uplink power manager 720 can determine that a maximum available UE transmit power is requested for the first component carrier for a first subframe, and where the power adjustment provides power for the second component carrier and maintains a combined transmit power of the UE at or below a combined maximum transmit power limit of the UE. In some examples, the uplink power manager 720 can reduce the maximum transmit power limit for each of the two or more uplink component carriers by a maximum transmit power adjustment value of the UE. In some cases, the power adjustment can be based on the scheduling information for the set of subframes indicating whether each component carrier of the set of component carriers is to be used to transmit data for each subframe. In some cases, the power adjustment is further based on a maximum allowed value of the power adjustment.

[0109] In some examples, the uplink power manager 720 can adjust a maximum uplink transmit power of each component carrier in the set of uplink component carriers based on determining that the UE is configured for uplink communications using uplink carrier aggregation. In some examples, the uplink power manager 720 can apply a static, hardware-based power adjustment to the maximum transmit power limit of each component carrier in the set of uplink component carriers.

[0110] In some cases, the power adjustment is based on a power class of the UE. In some cases, the maximum transmit power limit and the maximum transmit power adjustment value are hardware-based parameters of the UE.

[0111] In some cases, the adjusting the maximum uplink transmit power of the first component carrier allows the UE to allocate transmit power to the second component carrier when the base station requests a maximum available transmit power for an uplink transmission of the first component carrier, and wherein a transmit power of a combination of the first component carrier and the second component carrier is maintained at or below a combined maximum transmit power limit of the UE.

[0112] The uplink transmission manager 725 can transmit uplink communications to the base station in each subframe using one or more component carriers in the set of component carriers, where a transmit power of each component carrier is based on the calculation. In some examples, the uplink transmission manager 725 can transmit uplink communications to the base station using at least a first component carrier in the set of component carriers using an uplink transmit power that is equal to or lower than the adjusted maximum uplink transmit power of the first component carrier.

[0113] The DRX manager 730 can determine that the second component carrier is not scheduled for uplink communications in the first subframe based on a discontinuous reception configuration of the second component carrier. In some examples, the DRX manager 730 can set the second transmit power to zero for the first subframe based on the discontinuous reception configuration. In some examples, the DRX manager 730 can determine a power adjustment of the maximum transmit power limit of the first component carrier for the first subframe based on setting the second transmit power to zero for the first subframe.

[0114] Figure 8A diagram illustrating a system 800 including a device 805 that supports techniques for determining uplink power for multiple concurrent uplink transmissions in accordance with aspects of the present disclosure is shown. The device 805 can be an example of or include the components of device 505, device 605, or a UE 115 as described herein. The device 805 can include components for bi-directional voice and data communications including components for transmitting and receiving communications, including a communications manager 810, an I / O controller 915, a transceiver 820, an antenna 825, memory 830, and a processor 840. These components can be in electronic communication via one or more buses (e.g., bus 845).

[0115] The communications manager 810 can receive, from a base station, scheduling information for a set of subframes, determine, based on the scheduling information, one or more scheduling parameters for each component carrier of a set of component carriers for uplink communications with the base station, calculate, for each subframe of the set of subframes, a power adjustment of a maximum transmit power limit for each component carrier of the set of component carriers based on the one or more scheduling parameters, where a first power adjustment for a first component carrier of the set of component carriers is determined based on a second scheduling parameter of a second component carrier and a second power adjustment for the second component carrier is based on a first scheduling parameter of the first component carrier, and transmit, to the base station, uplink communications in each subframe using one or more component carriers of the set of component carriers, where a transmit power for each component carrier is based on the calculation.

[0116] The communications manager 810 can also determine whether the UE is configured for uplink communications using uplink carrier aggregation of the set of uplink component carriers, adjust a maximum uplink transmit power for each component carrier of the set of uplink component carriers based on determining that the UE is configured for uplink communications using uplink carrier aggregation, and transmit, to the base station, uplink communications using at least a first component carrier of the set of component carriers using an uplink transmit power that is equal to or lower than the adjusted maximum uplink transmit power of the first component carrier.

[0117] The I / O controller 815 can manage input and output signals for the device 805. The I / O controller 815 can also manage peripherals not integrated into the device 805. In some cases, the I / O controller 815 can represent a physical connection or port to the The operating system of the device 805 can be any operating system known in the art, including but not limited to: Android by Google, iOS by Apple, Windows by Microsoft, or other known operating systems. In other cases, the I / O controller 815 can represent or interact with a modem, a keyboard, a mouse, a touchscreen, or similar devices. In some cases, the I / O controller 815 can be implemented as part of the processor. In some cases, a user can interact with the device 805 via the I / O controller 1315 or via hardware components controlled by the I / O controller 815.

[0118] The transceiver 820 can communicate bi-directionally, via one or more antennas, wired, or wireless links as described above. For example, the transceiver 820 can represent a wireless transceiver and can communicate bi-directionally with another wireless transceiver. The transceiver 820 can also include a modem to modulate the packets and provide the modulated packets to the antennas for transmission, and to demodulate packets received from the antennas.

[0119] In some cases, the wireless device can include a single antenna 825. However, in some cases the device can have more than one antenna 825, which can be capable of concurrently transmitting or receiving multiple wireless transmissions.

[0120] The memory 830 can include RAM and ROM. The memory 830 can store computer-readable, computer-executable software 835 including instructions that, when executed, cause the processor to perform various functions described herein. In some cases, the memory 830 can contain, among other computer-readable instructions, a BIOS which can control basic hardware or software operation such as the interaction with peripheral components or devices.

[0121] The processor 840 can include an intelligent hardware device, (e.g., a general- purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, the processor 840 can be configured to operate a memory array using a memory controller. In other cases a memory controller can be integrated into the processor 840. The processor 840 can be configured to execute computer-readable instructions stored in a memory (e.g., the memory 830) to cause the device 805 to perform various functions (e.g., functions or tasks supporting techniques for determining uplink power for multiple concurrent uplink transmissions).

[0122] The code 835 can include instructions to implement aspects of the present disclosure, including instructions to support wireless communications. The code 835 can be stored in a non-transitory computer-readable medium such as system memory or other type of memory. In some cases, the code 835 can not be directly executable by the processor 840 but can cause a computer (e.g., when compiled and executed) to perform functions described herein.

[0123] Figure 9 A flow diagram illustrating a method 900 that supports techniques for determining uplink power for multiple concurrent uplink transmissions in accordance with aspects of the present disclosure is shown. The operations of method 900 can be implemented by a UE 115 or its components as described herein. For example, the operations of method 900 can be performed by a communications manager as described with reference to Figures 5 to 8 In some examples, a UE can execute a set of instructions to control its functional units to perform the described functions. Additionally or alternatively, the UE can perform aspects of the described functions using special-purpose hardware.

[0124] At 905, the UE can receive scheduling information for a set of subframes from a base station. The operations of 905 can be performed according to the methods described herein. In some examples, aspects of the operations of 905 can be performed by a carrier aggregation as described with reference to Figures 5 to 8 FIG. 9.

[0125] At 910, the UE can determine one or more scheduling parameters for each of a set of component carriers for uplink communications with the base station based on the scheduling information. The operations of 910 can be performed according to the methods described herein. In some examples, aspects of the operations of 910 can be performed by a resource manager as described with reference to Figures 5 to 8 FIG. 9. In some cases, a first component carrier of the set of component carriers is a primary component carrier configured by the base station and a second component carrier is a secondary component carrier configured by the base station. In some cases, the first component carrier is configured for a first RAT and the second component carrier is configured for a second RAT.

[0126] At 915, the UE can calculate, for each subframe of the set of subframes, a power adjustment to a maximum transmit power limit for each of the set of component carriers based on the one or more scheduling parameters, where a first power adjustment for a first component carrier of the set of component carriers is determined based on a second scheduling parameter of a second component carrier and a second power adjustment for a second component carrier of the set of component carriers is based on a first scheduling parameter of the first component carrier. The operations of 915 can be performed according to the methods described herein. In some examples, aspects of the operations of 915 can be performed by an edge communications manager as described with reference to Figures 5 to 8 FIG. 9. In some cases, the power adjustment is based on the scheduling information for the set of subframes indicating whether each component carrier of the set of component carriers is to be used to transmit data for each subframe. In some cases, the power adjustment is further based on a maximum allowed value of the power adjustment. In some cases, the power adjustment is based on a power class of the UE.

[0127] At 920, the UE can transmit uplink communications to the base station in each subframe using one or more of the set of component carriers, where a transmit power of each component carrier is based on the calculation. The operations of 920 can be performed according to the methods described herein. In some examples, aspects of the operations of 920 can be performed by a transmit power manager as described with reference to Figures 5 to 8 the edge communications manager described with reference to

[0128] Figure 10 A method 1000 that supports techniques for determining uplink power for multiple concurrent uplink transmissions in accordance with aspects of the present disclosure is shown. The operations of method 1000 can be implemented by a UE 115 or its components as described herein. For example, the operations of method 1000 can be performed by a communications manager as described with reference to Figures 5 to 8 FIGS. 1 through 7. In some examples, a UE can execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE can perform aspects of the described functions using special-purpose hardware. Method 1000 can facilitate determining uplink power for multiple concurrent uplink transmissions.

[0129] At 1005, the UE can receive scheduling information for a set of subframes from a base station. The operations of 1005 can be performed according to the methods described herein. In some examples, aspects of the operations of 1005 can be performed by a carrier aggregation as described with reference to Figures 5 to 8 FIGS. 1 through 7. In some examples, a UE can execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE can perform aspects of the described functions using special-purpose hardware. Method 1000 can facilitate determining uplink power for multiple concurrent uplink transmissions.

[0130] At 1010, the UE can determine, based on the scheduling information, one or more scheduling parameters for each of a set of component carriers for uplink communications with the base station. The operations of 1010 can be performed according to the methods described herein. In some examples, aspects of the operations of 1010 can be performed by a resource manager as described with reference to Figures 5 to 8 FIGS. 1 through 7. In some examples, a UE can execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE can perform aspects of the described functions using special-purpose hardware. Method 1000 can facilitate determining uplink power for multiple concurrent uplink transmissions.

[0131] At 1015, the UE can calculate, for each subframe of the set of subframes, a power adjustment to a maximum transmit power limit for each of the set of component carriers based on the one or more scheduling parameters, where a first power adjustment for a first component carrier of the set of component carriers is determined based on a second scheduling parameter of a second component carrier, and a second power adjustment for the second component carrier of the set of component carriers is based on a first scheduling parameter of the first component carrier. The operations of 1015 can be performed according to the methods described herein. In some examples, aspects of the operations of 1015 can be performed by an edge communications manager as described with reference to Figures 5 to 8 FIGS. 1 through 7. In some examples, a UE can execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE can perform aspects of the described functions using special-purpose hardware. Method 1000 can facilitate determining uplink power for multiple concurrent uplink transmissions.

[0132] At 1020, the UE can determine that a maximum available UE transmit power is requested for the first component carrier for the first subframe, and where the power adjustment provides power for the second component carrier and maintains a combined transmit power of the UE at or below a combined maximum transmit power limit of the UE. The operations of 1020 can be performed according to the methods described herein. In some examples, aspects of the operations of 1020 can be performed by an edge communication manager as described with reference to Figures 5 to 8 FIG. 10.

[0133] At 1025, the UE can transmit uplink communications to the base station in each subframe using one or more of the set of component carriers, where a transmit power of each component carrier is based on the calculation. The operations of 1025 can be performed according to the methods described herein. In some examples, aspects of the operations of 1025 can be performed by an edge communication manager as described with reference to Figures 5 to 8 FIG. 10.

[0134] Figure 11 A method 1100 that supports techniques for determining uplink power for multiple concurrent uplink transmissions in accordance with aspects of the present disclosure is shown. The operations of method 1100 can be implemented by a UE 115 or its components as described herein. For example, the operations of method 1100 can be performed by a communications manager as described with reference to Figures 5 to 8 FIG. 11. In some examples, a UE can execute a set of instructions to control the functional units of the UE to perform the described functions. Additionally or alternatively, the UE can perform aspects of the described functions using special-purpose hardware.

[0135] At 1105, the UE can receive scheduling information for a set of subframes from a base station. The operations of 1105 can be performed according to the methods described herein. In some examples, aspects of the operations of 1105 can be performed by a carrier aggregation as described with reference to Figures 5 to 8 FIG. 11.

[0136] At 1110, the UE can determine, based on the scheduling information, one or more scheduling parameters for each of a set of component carriers for uplink communications with the base station. The operations of 1110 can be performed according to the methods described herein. In some examples, aspects of the operations of 1110 can be performed by a resource manager as described with reference to Figures 5 to 8 FIG. 11.

[0137] At 1115, the UE can determine, based on a discontinuous reception configuration of the second component carrier, that the second component carrier is not scheduled for uplink communications in the first subframe. The operations of 1115 can be performed according to the methods described herein. In some examples, aspects of the operations of 1115 can be performed by a resource manager as described with reference to Figures 5 to 8The described DRX manager to perform.

[0138] At 1120, the UE can set the second transmit power to zero for the first subframe based on the discontinuous reception configuration. The operations of 1120 can be performed according to the methods described herein. In some examples, aspects of the operations of 1120 can be performed by a DRX manager as described with reference to Figures 5 to 8 The described DRX manager to perform.

[0139] At 1125, the UE can determine a power adjustment of a maximum transmit power limit for the first component carrier for the first subframe based on setting the second transmit power to zero for the first subframe. The operations of 1125 can be performed according to the methods described herein. In some examples, aspects of the operations of 1125 can be performed by a DRX manager as described with reference to Figures 5 to 8 The described DRX manager to perform.

[0140] At 1130, the UE can transmit uplink communications to the base station in each subframe using one or more of the set of component carriers, where a transmit power of each component carrier is based on the determined power adjustment. The operations of 1130 can be performed according to the methods described herein. In some examples, aspects of the operations of 1130 can be performed by an edge communications manager as described with reference to Figure 12 The described edge communications manager to perform.

[0141] Figures 5 to 8 A flow diagram illustrating a method 1200 that supports techniques for determining uplink power for multiple concurrent uplink transmissions in accordance with aspects of the present disclosure is shown. The operations of method 1200 can be implemented by a UE 115 or its components as described herein. For example, the operations of method 1200 can be performed by a communications manager as described with reference to Figures 5 to 8 In some examples, a UE can execute a set of instructions to control the functional units of the UE to perform the described functions. Additionally or alternatively, the UE can perform aspects of the described functions using special-purpose hardware.

[0142] At 1205, the UE can determine whether the UE is configured for uplink communications using uplink carrier aggregation of a set of uplink component carriers. The operations of 1205 can be performed according to the methods described herein. In some examples, aspects of the operations of 1205 can be performed by a carrier aggregation as described with reference to Figures 5 to 8 The described carrier aggregation to perform.

[0143] At 1210, the UE can adjust a maximum uplink transmit power of each component carrier of the set of uplink component carriers based on determining that the UE is configured for uplink communications using uplink carrier aggregation. The operations of 1210 can be performed according to the methods described herein. In some examples, aspects of the operations of 1210 can be performed by a edge communications manager as described with reference to Figures 5 to 8 The maximum transmit power limit and the maximum transmit power adjustment value are hardware-based parameters of the UE in some cases. In some cases, adjusting the maximum uplink transmit power of the first component carrier allows the UE to allocate transmit power to the second component carrier when the base station requests a maximum available transmit power for uplink transmissions of the first component carrier, and wherein a transmit power of a combination of the first component carrier and the second component carrier is kept at or below a combined maximum transmit power limit of the UE. In some cases, the UE can apply a static hardware-based power adjustment to the maximum transmit power limit of each component carrier of the set of uplink component carriers. In some cases, adjusting the maximum uplink transmit power is further based on a power class of the UE.

[0144] At 1215, the UE can reduce a maximum transmit power limit of each of the two or more uplink component carriers by a maximum transmit power adjustment value of the UE. The operations of 1215 can be performed according to the methods described herein. In some examples, aspects of the operations of 1215 can be performed by a edge communications manager as described with reference to Figures 5 to 8

[0145] At 1220, the UE can transmit, to the base station, an uplink communication using at least a first component carrier of the set of component carriers using an uplink transmit power that is equal to or lower than the adjusted maximum uplink transmit power of the first component carrier. The operations of 1220 can be performed according to the methods described herein. In some examples, aspects of the operations of 1220 can be performed by a edge communications manager as described with reference to Figure 13 The first component carrier is a primary component carrier configured by the base station and a second component carrier of the set of component carriers is a secondary component carrier configured by the base station in some cases. In some cases, the first component carrier is configured for a first RAT and a second component carrier of the set of component carriers is configured for a second RAT.

[0146] Figures 5 to 8 A flow diagram illustrating a method 1300 that supports techniques for determining uplink power for multiple concurrent uplink transmissions in accordance with aspects of the present disclosure is shown. The operations of method 1300 can be implemented by a UE 115 or its components as described herein. For example, the operations of method 1300 can be performed by a edge communications manager as described with reference to Figures 5 to 8 ​The described communication manager performs. In some examples, the UE can execute a set of instructions to control the functional units of the UE to perform the described functions. Additionally or alternatively, the UE can perform various aspects of the described functions using special-purpose hardware.

[0147] At 1305, the UE can determine whether the UE is configured for uplink communications using uplink carrier aggregation of a set of uplink component carriers. The operations of 1305 can be performed according to the methods described herein. In some examples, aspects of the operations of 1305 can be performed by a carrier aggregation as described with reference to Figures 5 to 8 The described carrier aggregation to perform.

[0148] At 1310, the UE can adjust a maximum uplink transmit power for each component carrier of the set of uplink component carriers based on determining that the UE is configured for uplink communications using uplink carrier aggregation. The operations of 1310 can be performed according to the methods described herein. In some examples, aspects of the operations of 1310 can be performed by an edge communication manager as described with reference to Figures 5 to 8 The described edge communication manager to perform.

[0149] At 1315, the UE can transmit, to the base station, an uplink communication using at least a first component carrier of the set of component carriers using an uplink transmit power that is equal to or lower than the adjusted maximum uplink transmit power for the first component carrier. The operations of 1315 can be performed according to the methods described herein. In some examples, aspects of the operations of 1315 can be performed by an edge communication manager as described with reference to Figures 5 to 8 The described edge communication manager to perform.

[0150] At 1320, the UE can determine that the UE is reconfigured to remove the uplink carrier aggregation configuration and that the uplink communications will use a single component carrier. The operations of 1320 can be performed according to the methods described herein. In some examples, aspects of the operations of 1320 can be performed by a carrier aggregation as described with reference to Figures 5 to 8 The described carrier aggregation to perform.

[0151] At 1325, the UE can discontinue the adjustment of the maximum uplink transmit power. The operations of 1325 can be performed according to the methods described herein. In some examples, aspects of the operations of 1325 can be performed by a carrier aggregation as described with reference to ​ The described carrier aggregation to perform.

[0152] The following provides an overview of aspects of the disclosure:

[0153] Aspect 1 : A method for wireless communication at a UE, the method comprising: receiving, from a base station, scheduling information for a plurality of subframes; determining, based at least in part on the scheduling information, one or more scheduling parameters for each of a plurality of component carriers for uplink communications with the base station; calculating, for each of the plurality of subframes, a power adjustment to a maximum transmit power limit for each of the plurality of component carriers based at least in part on the one or more scheduling parameters, wherein a first power adjustment for a first component carrier of the plurality of component carriers is determined based at least in part on a second scheduling parameter of a second component carrier, and a second power adjustment for the second component carrier is based at least in part on a first scheduling parameter of the first component carrier; and transmitting, to the base station, the uplink communications in each of the subframes using one or more of the plurality of component carriers, wherein a transmit power for each component carrier is based at least in part on the calculating.

[0154] Aspect 2: The method of aspect 1, wherein the power adjustment is based at least in part on the scheduling information for the plurality of subframes indicating whether data is to be transmitted using each of the plurality of component carriers for each subframe.

[0155] Aspect 3: The method of any of aspects 1-2, wherein the power adjustment is further based at least in part on a maximum allowed value of the power adjustment.

[0156] Aspect 4: The method of any of aspects 1-3, further comprising determining that a maximum available UE transmit power is requested for the first component carrier for a first subframe, and wherein the power adjustment provides power for the second component carrier and maintains a combined transmit power of the UE at or below a combined maximum transmit power limit of the UE.

[0157] Aspect 5: The method of any of aspects 1-4, wherein the calculating further comprises: determining, based at least in part on a discontinuous reception configuration of the second component carrier, that the second component carrier is not scheduled for uplink communications in a first subframe; setting the second transmit power to zero for the first subframe based at least in part on the discontinuous reception configuration; and determining the power adjustment to the maximum transmit power limit for the first component carrier for the first subframe based at least in part on setting the second transmit power to zero for the first subframe.

[0158] Aspect 6: The method of any of aspects 1-5, wherein the first component carrier is a primary component carrier configured by the base station and the second component carrier is a secondary component carrier configured by the base station.

[0159] Aspect 7: The method of any of aspects 1-6, wherein the first component carrier is configured for a first RAT and the second component carrier is configured for a second RAT.

[0160] Aspect 8: The method of aspect 7, wherein the first RAT and the second RAT are accessed using different subscriber identity modules (SIMs) of the UE.

[0161] Aspect 9: The method of any of aspects 1-8, wherein the power adjustment is based at least in part on a power class of the UE.

[0162] Aspect 10: A method for wireless communications at a UE, comprising: determining whether the UE is configured for uplink communications using uplink carrier aggregation of a plurality of uplink component carriers, adjusting a maximum uplink transmit power of each component carrier of the plurality of uplink component carriers based at least in part on determining that the UE is configured for uplink communications using uplink carrier aggregation, and transmitting uplink communications to a base station using at least a first component carrier of the plurality of component carriers using an uplink transmit power that is equal to or lower than the adjusted maximum uplink transmit power of the first component carrier.

[0163] Aspect 11: The method of aspect 10, wherein adjusting the maximum uplink transmit power comprises reducing a maximum transmit power limit of each of the plurality of uplink component carriers by a maximum transmit power adjustment value of the UE.

[0164] Aspect 12: The method of claim 11, wherein the maximum transmit power limit and the maximum transmit power adjustment value are hardware-based parameters of the UE.

[0165] Aspect 13: The method of any of aspects 10-12, wherein adjusting the maximum uplink transmit power of the first component carrier allows the UE to allocate transmit power to a second component carrier when a base station requests a maximum available transmit power for uplink transmissions of the first component carrier, and wherein a combined transmit power of the first component carrier and the second component carrier is kept at or below a combined maximum transmit power limit of the UE.

[0166] Aspect 14: The method of any of aspects 10-13, further comprising: determining that the UE is reconfigured to remove the uplink carrier aggregation configuration and the uplink communications are to use a single component carrier and discontinuing the operations, features, means, or instructions that adjust the maximum uplink transmit power.

[0167] Aspect 15: The method of any of aspects 10 through 14, wherein adjusting the maximum uplink transmit power of each of the plurality of uplink component carriers comprises applying a static hardware-based power adjustment to a maximum transmit power limit of each of the plurality of uplink component carriers.

[0168] Aspect 16: The method of any of aspects 10 through 15, wherein the first component carrier is a primary component carrier configured by the base station, and a second component carrier of the plurality of uplink component carriers is a secondary component carrier configured by the base station.

[0169] Aspect 17: The method of any of aspects 10 through 16, wherein the first component carrier is configured for a first RAT, and a second component carrier of the plurality of uplink component carriers is configured for a second RAT.

[0170] Aspect 18: The method of aspect 17, wherein the first RAT and the second RAT use different subscriber identity modules (SIMs) access of the UE.

[0171] Aspect 19: The method of any of aspects 10 through 18, wherein adjusting the maximum uplink transmit power is further based at least in part on a power class of the UE.

[0172] Aspect 20: An apparatus for wireless communication at a UE, the apparatus comprising a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method of any of aspects 1 through 9.

[0173] Aspect 21: An apparatus for wireless communication at a UE, the apparatus comprising at least one means for performing the method of any of aspects 1 through 9.

[0174] Aspect 22: A non-transitory computer-readable medium storing code for wireless communication at a UE, the code comprising instructions executable by a processor to perform the method of any of aspects 1 through 9.

[0175] Aspect 23: An apparatus for wireless communication at a UE, the apparatus comprising a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method of any of aspects 10 through 19.

[0176] Aspect 24: An apparatus for wireless communication at a UE, the apparatus comprising at least one means for performing the method of any of aspects 10 through 19.

[0177] Aspect 25: A non-transitory computer-readable medium storing code for wireless communication at a UE, the code comprising instructions executable by a processor to perform the method of any of aspects 10 through 19.

[0178] It should be noted that the methods described herein describe possible implementations, and that the operations and the steps can be rearranged or otherwise modified and that other implementations are possible. Further, aspects from two or more of the methods can be combined.

[0179] Although aspects of an LTE, LTE-A, LTE-A Pro, or NR system can be described for purposes of example, and LTE, LTE-A, LTE-A Pro, or NR terminology can be used in much of the description, aspects of the described technology are applicable beyond LTE, LTE-A, LTE-A Pro, or NR networks. For example, the described technology can be applicable to various other wireless communication systems, such as Ultra Mobile Broadband (UMB), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and others.

[0180] Information and signals described herein can be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that can be referenced throughout the description can be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0181] The various illustrative blocks and components described in connection with the disclosure herein can be implemented or performed with a general-purpose processor, a DSP, an ASIC, a CPU, a FPGA, or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. The general-purpose processor can be a microprocessor, but in the alternative, the processor can be any processor, controller, microcontroller, or state machine. The processor can also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration).

[0182] The functions described herein can be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions can be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope of the disclosure and appended claims. For example, due to the nature of software, functions described herein can be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Features implementing functions can also be physically located at various positions, including being distributed as discrete components or being part of a physical entity.

[0183] Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A non-transitory storage medium can be any available medium that can be accessed by a general purpose or special purpose computer. By way of example, and not limitation, non-transitory computer-readable media can include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), flash memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of computer-readable medium. Disk and disc, as used herein, include CD, laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above are also included within the scope of computer-readable media.

[0184] As used herein, including in the claims, “or” as used in a list of items (for example, a list of items prefaced by a phrase such as “at least one of’ or “one or more of’) indicates an inclusive list such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Also, as used herein, the phrase “based on” shall not be construed as a reference to a closed set of conditions. For example, an exemplary step that is described as “based on condition A” can be based on both a condition A and a condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase “based on” shall be construed in the same manner as the phrase “based at least in part on.”

[0185] In the drawings, like reference numerals can be used to denote similar components throughout the several views. Further, various components of the same type can be distinguished by following the convention of placing the primary reference number in the hundreds column and a secondary reference number in the tens column of the reference number. For example, 102, 102a, 102b, and 102c can represent similar components in different figures.

[0186] The implementations described herein are implemented as logical steps in a routine that is managed in connection with one or more processing units, such as a general purpose computer. The routine comprises an ordered listing of computer-executable instructions for implementing logic described herein. The order in which aspects of the routine are performed can be varied, and over time. The routine can be implemented in one or more computer programs.

[0187] The description set forth herein is intended to be illustrative of the disclosure and it is not intended that the disclosure be limited to one or more examples presented in the description. The disclosure is widely applicable to other examples, some of which are encompassed by the claims. Numerous modifications and adaptations will be apparent to those skilled in the art without departing from the scope of the disclosure. Thus, the scope of the disclosure is not to be limited by the disclosure provided herein but only by the claims.

Claims

1. A method for wireless communication at a user equipment (UE), comprising: Receive scheduling information for multiple subframes; The scheduling information is used at least in part to determine one or more scheduling parameters for each of the plurality of component carriers used for uplink communication and the transmission power of a plurality of requests associated with the plurality of component carriers. At the UE, for each of the plurality of subframes, a power adjustment for the maximum transmit power limit of each of the plurality of component carriers is calculated at least in part based on the one or more scheduling parameters for each of the plurality of component carriers and the transmit power of the plurality of requests associated with the plurality of component carriers, wherein a first power adjustment for the maximum transmit power limit of the first component carrier of the first subframe of the plurality of subframes is determined at least in part based on a second scheduling parameter and a second request transmit power for a second component carrier of the first subframe, and a second power adjustment for the maximum transmit power limit of the second component carrier of the first subframe of the plurality of subframes is at least in part based on a first scheduling parameter and a first request transmit power for the first component carrier of the first subframe, and wherein a third power adjustment for the maximum transmit power limit of the first component carrier of the second subframe of the plurality of subframes is different from the first power adjustment for the maximum transmit power limit of the first component carrier; as well as Uplink communication is transmitted in each subframe using one or more of the plurality of component carriers, wherein the transmission power for each component carrier is based at least in part on a calculated first power adjustment, a second power adjustment, or a third power adjustment.

2. The method of claim 1, wherein the calculated power adjustment is based at least in part on scheduling information for the plurality of subframes, the scheduling information indicating whether each of the plurality of component carriers should be used to transmit data for each subframe.

3. The method of claim 1, wherein the calculated power adjustment is at least in part based on the maximum permissible value of the power adjustment.

4. The method according to claim 1, further comprising: The transmit power of the first request is determined to be the maximum available UE transmit power, and wherein the second power adjustment provides power for the second component carrier, and maintains the transmit power of the combination of UEs at or below the maximum transmit power limit of the combination of UEs.

5. The method according to claim 1, wherein the calculation further comprises: The determination that the second component carrier was not scheduled for uplink communication in the first subframe is based at least in part on the discontinuous reception configuration of the second component carrier. The second transmit power of the second component carrier is set to zero for the first subframe, at least in part based on the discontinuous reception configuration. as well as The first power adjustment for the maximum transmission power limit for the first component carrier is determined at least in part based on setting the second transmit power to zero for the first subframe.

6. The method of claim 1, wherein the first component carrier is a primary component carrier configured by the access network entity, and the second component carrier is a secondary component carrier configured by the access network entity.

7. The method of claim 1, wherein the first component carrier is configured for a first radio access technology (RAT), and the second component carrier is configured for a second RAT.

8. The method of claim 7, wherein the first RAT and the second RAT use different subscriber identification modules (SIMs) of the UE for access.

9. The method of claim 1, wherein the calculated power adjustment is at least partially based on the power level of the UE.

10. A method for wireless communication at a user equipment (UE), comprising: Determine whether the UE is configured for uplink communication using uplink carrier aggregation of multiple uplink component carriers; The maximum uplink transmit power of each of the plurality of uplink component carriers is adjusted, at least in part, based on the determination that the UE is configured for uplink communication using uplink carrier aggregation. as well as Uplink communication is transmitted using at least a first component carrier of the plurality of uplink component carriers and using an uplink transmission power equal to or lower than the adjusted maximum uplink transmission power of the first component carrier. It was determined that the UE was reconfigured to remove the uplink carrier aggregation configuration and that uplink communication would use a single component carrier; as well as The adjustment of the maximum uplink transmit power is interrupted.

11. The method of claim 10, wherein adjusting the maximum uplink transmit power comprises: The maximum transmit power limit of each of the plurality of uplink component carriers is reduced by the maximum transmit power adjustment value of the UE.

12. The method of claim 11, wherein the maximum transmit power limit and the maximum transmit power adjustment value are hardware-based parameters of the UE.

13. The method of claim 10, wherein when the access network entity requests the maximum available transmit power for uplink transmission on the first component carrier, adjusting the maximum uplink transmit power of the first component carrier allows the UE to allocate transmit power to the second component carrier, and wherein the transmit power of the combination of the first component carrier and the second component carrier is maintained at or below the maximum transmit power limit of the combination of the UE.

14. The method of claim 10, wherein adjusting the maximum uplink transmit power of each of the plurality of uplink component carriers comprises: Static, hardware-based power adjustment is applied to the maximum transmit power limit of each of the plurality of uplink component carriers.

15. The method of claim 10, wherein the first component carrier is a primary component carrier configured by the access network entity, and the second component carrier among the plurality of uplink component carriers is a secondary component carrier configured by the access network entity.

16. The method of claim 10, wherein the first component carrier is configured for a first radio access technology (RAT), and the second component carrier of the plurality of uplink component carriers is configured for a second RAT.

17. The method of claim 16, wherein the first RAT and the second RAT use different subscriber identification modules (SIMs) of the UE for access.

18. The method of claim 10, wherein adjusting the maximum uplink transmit power is further based at least in part on the power level of the UE.

19. An apparatus for wireless communication at a user equipment (UE), comprising: processor, Memory coupled to the processor; as well as Instructions, stored in the memory and executable by the processor, enable the device to: Receive scheduling information for multiple subframes; The scheduling information is used at least in part to determine one or more scheduling parameters for each of the plurality of component carriers used for uplink communication and the transmission power of a plurality of requests associated with the plurality of component carriers. At the UE, for each of the plurality of subframes, a power adjustment for the maximum transmit power limit of each of the plurality of component carriers is calculated at least in part based on the one or more scheduling parameters for each of the plurality of component carriers and the transmit power of the plurality of requests associated with the plurality of component carriers, wherein a first power adjustment for the maximum transmit power limit of the first component carrier of the first subframe of the plurality of subframes is determined at least in part based on a second scheduling parameter and a second request transmit power for a second component carrier of the first subframe, and a second power adjustment for the maximum transmit power limit of the second component carrier of the first subframe of the plurality of subframes is at least in part based on a first scheduling parameter and a first request transmit power for the first component carrier of the first subframe, and wherein a third power adjustment for the maximum transmit power limit of the first component carrier of the second subframe of the plurality of subframes is different from the first power adjustment for the maximum transmit power limit of the first component carrier; as well as Uplink communication is transmitted in each subframe using one or more of the plurality of component carriers, wherein the transmission power for each component carrier is based at least in part on a calculated first power adjustment, a second power adjustment, or a third power adjustment.

20. The apparatus of claim 19, wherein the calculated power adjustment is based at least in part on scheduling information for the plurality of subframes, the scheduling information indicating whether each of the plurality of component carriers should be used to transmit data for each subframe.

21. The apparatus of claim 19, wherein the calculated power adjustment is further based at least in part on the maximum permissible value of the power adjustment.

22. The apparatus of claim 19, wherein the instructions are further executable by the processor to cause the apparatus to: The transmit power of the first request is determined to be the maximum available UE transmit power, and wherein the second power adjustment provides power for the second component carrier, and maintains the transmit power of the combination of UEs at or below the maximum transmit power limit of the combination of UEs.

23. The apparatus of claim 19, wherein the instructions are further executable by the processor to cause the apparatus to: The determination that the second component carrier was not scheduled for uplink communication in the first subframe is based at least in part on the discontinuous reception configuration of the second component carrier. The second transmit power of the second component carrier is set to zero for the first subframe, at least in part based on the discontinuous reception configuration. as well as The first power adjustment for the maximum transmission power limit for the first component carrier is determined at least in part based on setting the second transmit power to zero for the first subframe.

24. An apparatus for wireless communication at a user equipment (UE), comprising: processor, Memory coupled to the processor; as well as Instructions, stored in the memory and executable by the processor, enable the device to: Determine whether the UE is configured for uplink communication using uplink carrier aggregation of multiple uplink component carriers; The maximum uplink transmit power of each of the plurality of uplink component carriers is adjusted, at least in part, based on the determination that the UE is configured for uplink communication using uplink carrier aggregation. as well as Uplink communication is transmitted using at least a first component carrier of the plurality of uplink component carriers and using an uplink transmission power equal to or lower than the adjusted maximum uplink transmission power of the first component carrier. It was determined that the UE was reconfigured to remove the uplink carrier aggregation configuration and that uplink communication would use a single component carrier; as well as The adjustment of the maximum uplink transmit power is interrupted.

25. The apparatus of claim 24, wherein the instructions are further executable by the processor to cause the apparatus to: The maximum transmit power limit of each of the plurality of uplink component carriers is reduced by the maximum transmit power adjustment value of the UE.

26. The apparatus of claim 24, wherein the maximum transmit power limit and the maximum transmit power adjustment value are hardware-based parameters of the UE.

27. The apparatus of claim 24, wherein when an access network entity requests the maximum available transmit power for uplink transmission on the first component carrier, adjusting the maximum uplink transmit power of the first component carrier allows the UE to allocate transmit power to the second component carrier, and wherein the transmit power of the combination of the first component carrier and the second component carrier is maintained at or below the maximum transmit power limit of the combination of the UE.

28. The apparatus of claim 24, wherein adjusting the maximum uplink transmit power of each of the plurality of uplink component carriers comprises: Static, hardware-based power adjustment is applied to the maximum transmit power limit of each of the plurality of uplink component carriers.

29. A computer-readable medium having program code recorded thereon, wherein, The program code can be run by one or more processors, causing the processors to perform the method of any one of claims 1-9.

30. A computer-readable medium having program code recorded thereon, wherein, The program code can be run by one or more processors, causing the processors to perform the method of any one of claims 10-18.

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