modifying a transmit power of an uplink signal associated with a different radio access technology (RAT)

Abstract

The present disclosure relates to modifying a transmit power of uplink signals associated with different radio access technologies (RATs), where systems, methods, and apparatuses are provided for sharing a maximum transmit power limit between a first radio access technology (RAT) and a second RAT. In one aspect, a wireless communication apparatus can reduce a maximum transmit power limit for a first uplink signal associated with a first RAT to obtain a first transmit power. The wireless communication apparatus can allocate a second transmit power remaining from the maximum transmit power limit to a second uplink signal associated with a second RAT. The wireless communication apparatus can reduce the maximum transmit power limit when the wireless communication apparatus is located at a cell edge, and a higher priority of the first RAT relative to the second RAT can otherwise cause the second transmit power of the second uplink signal to not satisfy a threshold.

Description

[0001] This application is a divisional application of Chinese patent application No. 202280020996.5, filed on March 18, 2022, entitled "Modifying the transmit power of uplink signals associated with different radio access technologies (RAT)".

[0002] Cross-references to related applications

[0003] This patent application claims priority to U.S. Provisional Patent Application No. 63 / 163,653, filed March 19, 2021, entitled "Modifying Transmit Power of Uplink Signals Assimilated with Different Radio Access Technologies (RATs)," and U.S. Non-Provisional Patent Application No. 17 / 654,184, filed March 9, 2022, entitled "Modifying Transmit Power of Uplink Signals Assimilated with Different Radio Access Technologies (RATs)," both of which are hereby expressly incorporated by reference. Technical Field

[0004] Various aspects of this disclosure generally relate to wireless communications and techniques for modifying the transmit power of uplink signals associated with different radio access technologies (RATs).

[0005] Related technical descriptions

[0006] Wireless communication systems are widely deployed to provide a variety of telecommunications services such as telephone, video, data, messaging, and broadcasting. Typical wireless communication systems employ multiple access technologies that can support communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access technologies include Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Access (FDMA) systems, Orthogonal Frequency Division Multiple Access (OFDMA) systems, Single Carrier Frequency Division Multiple Access (SC-FDMA) systems, Time Division Synchronous Code Division Multiple Access (TD-SCDMA) systems, and Long Term Evolution (LTE). LTE / LTE-Advanced is an enhancement set of the Universal Mobile Telecommunications System (UMTS) mobile standard issued by the 3rd Generation Partnership Project (3GPP).

[0007] A wireless network may include one or more base stations that support communication for one or more user equipment (UEs). UEs may communicate with base stations via downlink and uplink communication. "Downlink" (or "DL") refers to the communication link from the base station to the UE, while "uplink" (or "UL") refers to the communication link from the UE to the base station.

[0008] These multiple access technologies have been adopted in various telecommunications standards to provide a common protocol that enables different UEs to communicate at the city, country, region, or global level. New Radio (NR) (also known as 5G) is an enhancement set to the LTE mobile standard issued by 3GPP. NR is designed to better support mobile broadband Internet access by using Orthogonal Frequency Division Multiplexing (OFDM) with a Cyclic Prefix (CP) (CP-OFDM) on the downlink, and CP-OFDM or Single Carrier Frequency Division Multiplexing (SC-FDM) (also known as Discrete Fourier Transform Extended OFDM (DFT-s-OFDM)) on the uplink, as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technologies and carrier aggregation to improve spectral efficiency, reduce costs, improve service, utilize new spectrum, and better integrate with other open standards.

[0009] Overview

[0010] The systems, methods, and apparatus disclosed herein each have several innovative aspects, and no single aspect is solely responsible for the desired properties disclosed herein.

[0011] One innovative aspect of the subject matter described in this disclosure can be implemented in a method performed by a wireless communication device. The method may include: reducing a maximum transmit power limit of a first uplink signal associated with a first radio access technology (RAT) to obtain a first transmit power; allocating a second transmit power remaining from the maximum transmit power limit to a second uplink signal associated with a second RAT; transmitting the first uplink signal associated with the first RAT to a first base station (BS) based on the first transmit power; and transmitting the second uplink signal associated with the second RAT to a second BS based on the second transmit power.

[0012] In some implementations, the first RAT is the Long Term Evolution RAT, and the second RAT is the New Radio RAT.

[0013] In some implementations, the second uplink signal overlaps with the first uplink signal in time.

[0014] In some implementations, the total transmit power of the first uplink signal and the second uplink signal is within the tolerance level of the maximum transmit power limit.

[0015] In some implementations, the method may include receiving a radio resource control (RRC) configuration indicating the maximum transmit power limit from one of the first BS or the second BS.

[0016] In some implementations, the wireless communication device is located at the edge of the cell.

[0017] In some implementations, the method may include reducing the maximum transmit power limit based on the condition being met.

[0018] In some implementations, the condition is met and the maximum transmit power limit is reduced when the path loss associated with the first RAT meets a threshold.

[0019] In some implementations, the condition is satisfied and the maximum transmit power limit is reduced based on one or more of the uplink modulation and coding scheme (MCS) or modulation order associated with the first RAT.

[0020] In some implementations, the condition is met and the maximum transmit power limit is reduced based on the traffic type associated with the first uplink signal.

[0021] In some implementations, this condition is not met and the maximum transmit power limit is not reduced when the first uplink signal is associated with a Physical Random Access Channel (PRACH) transmission.

[0022] In some implementations, this condition is not met and the maximum transmit power limit is not reduced when the first uplink signal is associated with a Physical Uplink Control Channel (PUCCH) transmission.

[0023] In some implementations, the condition is not met and the maximum transmit power limit is not reduced when the first uplink signal appears within a threshold time period after the handover of the wireless communication device.

[0024] In some implementations, the condition is not met and the maximum transmit power limit is not reduced when the first uplink signal appears within a threshold time period after the initial access procedure of the wireless communication device.

[0025] In some implementations, the maximum transmit power limit is reduced based on the effective signal-to-noise ratio (SNR) level associated with the first RAT at the base station meeting a threshold.

[0026] In some implementations, the condition is satisfied and the maximum transmit power limit is reduced based on the number of layers associated with the spatial multiplexing capability of the wireless communication device.

[0027] Another inventive aspect of the subject matter described in this disclosure can be implemented in a wireless communication device. The wireless communication device may include a processing system configured to reduce a maximum transmit power limit of a first uplink signal associated with a first RAT to obtain a first transmit power. The processing system may be configured to allocate a second transmit power remaining from the maximum transmit power limit to a second uplink signal associated with a second RAT. The wireless communication device may include a first interface configured to output the first uplink signal associated with the first RAT to a first BS based on the first transmit power. The first interface may be configured to output the second uplink signal associated with the second RAT to a second BS based on the second transmit power.

[0028] In some implementations, the first RAT is the Long Term Evolution RAT, and the second RAT is the New Radio RAT.

[0029] In some implementations, the second uplink signal overlaps with the first uplink signal in time.

[0030] In some implementations, the total transmit power of the first uplink signal and the second uplink signal is within the tolerance level of the maximum transmit power limit.

[0031] In some implementations, the first or second interface may be further configured to obtain an RRC configuration indicating the maximum transmit power limit from one of the first or second BS.

[0032] In some implementations, the wireless communication device is located at the edge of the cell.

[0033] In some implementations, in order to reduce the first transmit power, the processing system can be configured to reduce the maximum transmit power limit based on the condition being met.

[0034] In some implementations, the condition is met and the maximum transmit power limit is reduced when the path loss associated with the first RAT meets a threshold.

[0035] In some implementations, the condition is satisfied and the maximum transmit power limit is reduced based on one or more of the uplink MCS or modulation order associated with the first RAT.

[0036] In some implementations, the condition is met and the maximum transmit power limit is reduced based on the traffic type associated with the first uplink signal.

[0037] In some implementations, this condition is not met and the maximum transmit power limit is not reduced when the first uplink signal is associated with a PRACH transmission.

[0038] In some implementations, this condition is not met and the maximum transmit power limit is not reduced when the first uplink signal is associated with a PUCCH transmission.

[0039] In some implementations, the condition is not met and the maximum transmit power limit is not reduced when the first uplink signal appears within a threshold time period after the handover of the wireless communication device.

[0040] In some implementations, the condition is not met and the maximum transmit power limit is not reduced when the first uplink signal appears within a threshold time period after the initial access procedure of the wireless communication device.

[0041] In some implementations, the maximum transmit power limit is reduced based on the effective SNR level associated with the first RAT at the base station meeting a threshold.

[0042] In some implementations, the condition is satisfied and the maximum transmit power limit is reduced based on the number of layers associated with the spatial multiplexing capability of the wireless communication device.

[0043] Another innovative aspect of the subject matter described in this disclosure can be implemented in a non-transient computer-readable medium. The non-transient computer-readable medium may store one or more instructions for wireless communication. When executed by one or more processors of a wireless communication device, the one or more instructions may cause the processors to: reduce a maximum transmit power limit of a first uplink signal associated with a first RAT to obtain a first transmit power; allocate a second transmit power remaining from the maximum transmit power limit to a second uplink signal associated with a second RAT; transmit the first uplink signal associated with the first RAT to a first BS based on the first transmit power; and transmit the second uplink signal associated with the second RAT to the second BS based on the second transmit power.

[0044] In some implementations, the first RAT is the Long Term Evolution RAT, and the second RAT is the New Radio RAT.

[0045] In some implementations, the second uplink signal overlaps with the first uplink signal in time.

[0046] In some implementations, the total transmit power of the first uplink signal and the second uplink signal is within the tolerance level of the maximum transmit power limit.

[0047] In some implementations, the one or more instructions further cause the wireless communication device to receive an RRC configuration indicating the maximum transmit power limit from one of the first BS or the second BS.

[0048] In some implementations, the wireless communication device is located at the edge of the cell.

[0049] In some implementations, the one or more instructions that cause the wireless communication device to reduce the first transmit power cause the wireless communication device to reduce the maximum transmit power limit based on the condition being met.

[0050] In some implementations, the condition is met and the maximum transmit power limit is reduced when the path loss associated with the first RAT meets a threshold.

[0051] In some implementations, the condition is satisfied and the maximum transmit power limit is reduced based on one or more of the uplink MCS or modulation order associated with the first RAT.

[0052] In some implementations, the condition is met and the maximum transmit power limit is reduced based on the traffic type associated with the first uplink signal.

[0053] In some implementations, this condition is not met and the maximum transmit power limit is not reduced when the first uplink signal is associated with a PRACH transmission.

[0054] In some implementations, this condition is not met and the maximum transmit power limit is not reduced when the first uplink signal is associated with a PUCCH transmission.

[0055] In some implementations, the condition is not met and the maximum transmit power limit is not reduced when the first uplink signal appears within a threshold time period after the handover of the wireless communication device.

[0056] In some implementations, the condition is not met and the maximum transmit power limit is not reduced when the first uplink signal appears within a threshold time period after the initial access procedure of the wireless communication device.

[0057] In some implementations, the maximum transmit power limit is reduced based on the effective SNR level associated with the first RAT at the base station meeting a threshold.

[0058] In some implementations, the condition is satisfied and the maximum transmit power limit is reduced based on the number of layers associated with the spatial multiplexing capability of the wireless communication device.

[0059] Another innovative aspect of the subject matter described in this disclosure can be implemented in a wireless communication device. This wireless communication device may include: means for reducing a maximum transmit power limit of a first uplink signal associated with a first RAT to obtain a first transmit power; means for allocating a second transmit power remaining from the maximum transmit power limit to a second uplink signal associated with a second RAT; means for transmitting the first uplink signal associated with the first RAT to a first BS based on the first transmit power; and means for transmitting the second uplink signal associated with the second RAT to a second BS based on the second transmit power.

[0060] In some implementations, the first RAT is the Long Term Evolution RAT, and the second RAT is the New Radio RAT.

[0061] In some implementations, the second uplink signal overlaps with the first uplink signal in time.

[0062] In some implementations, the total transmit power of the first uplink signal and the second uplink signal is within the tolerance level of the maximum transmit power limit.

[0063] In some implementations, the wireless communication device may further include means for receiving an RRC configuration indicating the maximum transmit power limit from one of the first BS or the second BS.

[0064] In some implementations, the wireless communication device is located at the edge of the cell.

[0065] In some implementations, the wireless communication device may include means for reducing the maximum transmit power limit based on conditions being met.

[0066] In some implementations, the condition is met and the maximum transmit power limit is reduced when the path loss associated with the first RAT meets a threshold.

[0067] In some implementations, the condition is satisfied and the maximum transmit power limit is reduced based on one or more of the uplink MCS or modulation order associated with the first RAT.

[0068] In some implementations, the condition is met and the maximum transmit power limit is reduced based on the traffic type associated with the first uplink signal.

[0069] In some implementations, this condition is not met and the maximum transmit power limit is not reduced when the first uplink signal is associated with a PRACH transmission.

[0070] In some implementations, this condition is not met and the maximum transmit power limit is not reduced when the first uplink signal is associated with a PUCCH transmission.

[0071] In some implementations, the condition is not met and the maximum transmit power limit is not reduced when the first uplink signal appears within a threshold time period after the handover of the wireless communication device.

[0072] In some implementations, the condition is not met and the maximum transmit power limit is not reduced when the first uplink signal appears within a threshold time period after the initial access procedure of the wireless communication device.

[0073] In some implementations, the maximum transmit power limit is reduced based on the effective SNR level associated with the first RAT at the base station meeting a threshold.

[0074] In some implementations, the condition is satisfied and the maximum transmit power limit is reduced based on the number of layers associated with the spatial multiplexing capability of the wireless communication device.

[0075] The aspects generally include, as substantially described herein with reference to the accompanying drawings and explained as illustrated in the drawings, methods, apparatus, systems, computer program products, non-transient computer-readable media, user equipment, base stations, wireless communication devices, or processing systems.

[0076] Details of one or more implementations of the subject matter described in this disclosure are set forth in the accompanying drawings and the following description. Other features, aspects, and advantages will become apparent from this description, the drawings, and the claims. It should be noted that the relative dimensions in the following drawings may not be drawn to scale. Brief description of the attached diagram

[0077] Figure 1 This is a diagram illustrating an example of a wireless network.

[0078] Figure 2 This is a diagram illustrating an example of communication between a base station (BS) and a user equipment (UE) in a wireless network.

[0079] Figure 3 This is a diagram illustrating an example of a radio protocol architecture associated with a wireless communication device.

[0080] Figure 4 and Figure 5 This is a diagram illustrating an example of how the transmit power of uplink signals associated with different Radio Access Technologies (RATs) is correlated.

[0081] Figure 6 This is a diagram illustrating an example process of relating the transmit power of uplink signals associated with different RATs.

[0082] Figure 7 This is a block diagram of an example device for wireless communication.

[0083] Similar reference numerals and naming conventions in the various figures indicate similar elements. Detailed description

[0084] The following description is directed to certain implementations and is intended to describe the innovative aspects of this disclosure. However, those skilled in the art will readily recognize that the teachings herein can be applied in many different ways. Some examples in this disclosure are based on wireless and wired local area network (LAN) communications according to the Institute of Electrical and Electronics Engineers (IEEE) 802.11 wireless standard, the IEEE 802.3 Ethernet standard, and the IEEE 1901 power line communication (PLC) standard. However, the described implementation can be implemented in any device, system, or network capable of transmitting and receiving radio frequency signals according to any of the following wireless communication protocols: any of the IEEE 802.11 standards, Bluetooth®, Code Division Multiple Access (CDMA), Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Global System for Mobile Communications (GSM), GSM / General Packet Radio Service (GPRS), Enhanced Data GSM Environment (EDGE), Terrestrial Trunking Radio (TETRA), Wideband CDMA (W-CDMA), Evolved Data Optimized (EV-DO), 1xEV-DO, EV-DO Revision A, EV-DO Revision B, High-Speed ​​Packet Access (HSPA), High-Speed ​​Downlink Packet Access (HSDPA), High-Speed ​​Uplink Packet Access (HSUPA), Evolved High-Speed ​​Packet Access (HSPA+), Long Term Evolution (LTE), AMPS, or other known signals used for communication within wireless networks, cellular networks, or Internet of Things (IoT) networks (such as systems utilizing 3G, 4G, or 5G technologies or further implementations thereof).

[0085] An Evolved Universal Terrestrial Radio Access-New Radio (E-UTRA-NR) Dual Connectivity (EN-DC) wireless communication device can be connected to a first network entity (e.g., a first base station (BS) associated with a first radio access technology (RAT) such as E-UTRA or LTE). The EN-DC wireless communication device can attempt to connect to a second BS associated with a second RAT (such as NR) after establishing LTE. Once the first and second RATs are connected, the UE can perform simultaneous transmissions in the uplink using both LTE and NR. NR uplink performance may be affected by LTE uplink power usage. For example, LTE may have priority over NR in power usage. Therefore, LTE may consume available transmit power first, leaving the remaining transmit power available to NR. In other words, LTE may have full transmit power available, leaving the remaining transmit power available to NR.

[0086] The maximum combined transmit power between LTE and NR can be configured via Radio Resource Control (RRC) configuration. For example, the RRC configuration can define the maximum EN-DC power value (e.g., p-MaxEUTRA () indicates the maximum combined transmit power between LTE and NR.

[0087] Power allocation between LTE and NR can be based on dynamic power sharing or time-division duplex (TDM) mode. In dynamic power sharing, when LTE and NR scheduling overlaps and the total power exceeds the EN-DC maximum power value (e.g., ...), p- MaxEUTRA When NR transmit power can be backed up to allow LTE to use full uplink power (as indicated in the RRC configuration), LTE transmit power may not be backed up. In TDM mode, LTE and NR scheduling may not overlap, therefore NR transmit power may not be backed up to allow LTE to use full uplink power.

[0088] As an example, for LTE, the maximum transmit power limit could be 23 dBm. Because LTE has a higher priority than NR, the full maximum transmit power of LTE can be 23 dBm. However, at the cell edge, while LTE is allowed the full maximum transmit power of 23 dBm, NR may be allowed minimum transmit power or no transmit power at all, because LTE takes precedence over NR and may consume most or all of the maximum transmit power limit.

[0089] In a more specific example, in a cell edge scenario, LTE can request approximately 36-41 dBm of transmit power. LTE can be allocated a maximum transmit power limit of 23 dBm. In other words, the actual transmit power of LTE can be 23 dBm. Furthermore, NR might request approximately 33-44 dBm of transmit power. However, because LTE has higher priority and is allocated a maximum transmit power limit, in a cell edge scenario, NR might be allocated minimum transmit power or no transmit power at all. For example, transmit power might not be allocated to NR because LTE might consume available power. As a result, in a cell edge scenario, NR performance may be negatively affected by LTE uplink power usage.

[0090] In various aspects of the technologies and devices described herein, wireless communication devices (e.g., user equipment (UE), such as Figure 1 and Figure 2 The UE 120 depicted can reduce the maximum transmit power limit of a first uplink signal associated with LTE (e.g., a first radio access technology (RAT)) to obtain a first transmit power. The wireless communication device can allocate a second transmit power remaining from the maximum transmit power limit to a second uplink signal associated with NR (e.g., a second RAT). The wireless communication device can transmit the first uplink signal associated with LTE to a first BS based on the first transmit power. The wireless communication device can transmit the second uplink signal associated with NR to a second BS based on the second transmit power. In some aspects, the total transmit power of the first and second uplink signals can be within the tolerance level of the maximum transmit power limit. As a result, the total transmit power can comply with the maximum transmit power limit associated with the wireless communication device.

[0091] Specific implementations of the subject matter described in this disclosure can be implemented to achieve one or more of the following potential advantages. For example, in cell edge scenarios where the transmit power associated with the NR signal is relatively weak, the maximum transmit power limit for the uplink signal associated with LTE (e.g., 23 dBm) can be reduced, allowing the NR signal to be provided with additional transmit power. In some implementations, the additional transmit power can provide meaningful transmit power to sustain the NR uplink. In other words, the maximum transmit power limit can be shared between LTE and NR, even if LTE has a higher priority than NR, and because NR has a higher priority than LTE, LTE may not experience LTE power backoff. Without such a mechanism, the transmit power of NR could be significantly degraded because a large portion of the maximum transmit power limit might be allocated to the higher-priority LTE signal. This degrade could jeopardize NR uplink quality or cause the NR signal to be dropped along with it. Sharing the maximum transmit power limit between LTE and NR may have a relatively small impact on the LTE signal but a relatively large improvement on the NR signal. As a result, the overall throughput of both LTE and NR can be improved during cell edge scenarios. Furthermore, NR range can be extended by sharing the maximum transmit power limit between LTE and NR, thereby expanding NR coverage with a relatively small impact on LTE.

[0092] Figure 1 This is an illustration of an example of a wireless network 100. Wireless network 100 can be a 5G (e.g., NR) network and / or a 4G (e.g., LTE) network, or may include its elements. Wireless network 100 may include one or more entities, such as one or more base stations 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d), a user equipment (UE) 120 or multiple UEs 120 (shown as UE 120a, UE 120b, UE 120c, UE 120d, and UE 120e), or other network entities. Base station 110 is an example of a network entity communicating with UE 120. Base station 110 (sometimes referred to as BS) may include, for example, an NR base station, an LTE base station, a B-node, an eNB (e.g., in 4G), a gNB (e.g., in 5G), an access point, and / or a transmit / receive point (TRP). Each base station 110 may provide communication coverage for a specific geographic area. In the 3rd Generation Partnership Project (3GPP), the term "cell" can refer to the coverage area of ​​base station 110 and / or the base station subsystem serving that coverage area, depending on the context in which the term is used.

[0093] Base station 110 provides communication coverage to macrocells, picocells, femtocells, or another type of cell. Macrocells can cover a relatively large geographic area (e.g., a radius of several kilometers) and allow unrestricted access by UE 120 with a service subscription. Picocells can cover a relatively small geographic area and allow unrestricted access by UE 120 with a service subscription. Femtocells can cover a relatively small geographic area (e.g., a residential area) and allow restricted access by UE 120 associated with that femtocell (e.g., UE 120 in a closed subscriber group (CSG)). Base station 110 for macrocells may be referred to as a macro base station. Base station 110 for picocells may be referred to as a pico base station. Base station 110 for femtocells may be referred to as a femtocell or a home base station. Figure 1 In the example shown, BS 110a can be a macro base station for macro cell 102a, BS 110b can be a pico base station for pico cell 102b, and BS 110c can be a femto base station (BS) for femtocell 102c. A base station may support one or more (e.g., three) cells.

[0094] In some aspects, the term "base station" (e.g., base station 110) or "network entity" may refer to a clustered base station, a distributed base station, an integrated access and backhaul (IAB) node, a relay node, or one or more components thereof. For example, in some aspects, "base station" or "network entity" may refer to a central unit (CU), a distributed unit (DU), a radio unit (RU), a near real-time (near RT) RAN intelligent controller (RIC), or a non-real-time (non-RT) RIC, or a combination thereof. In some aspects, the term "base station" or "network entity" may refer to a device configured to perform one or more functions (such as those described herein in conjunction with base station 110). In some aspects, the term "base station" or "network entity" may refer to multiple devices configured to perform one or more functions. For example, in some distributed systems, each of multiple different devices (which may be located in the same geographical location or different geographical locations) may be configured to perform at least a portion of a function, or to repeat the performance of at least a portion of that function, and the term "base station" or "network entity" may refer to any one or more of these different devices. In some aspects, the term "base station" or "network entity" may refer to one or more virtual base stations or one or more virtual base station functions. For example, in some respects, two or more base station functions can be instantiated on a single device. In some respects, the term "base station" or "network entity" may refer to one of the base station functions rather than another. In this way, a single device can include more than one base station.

[0095] In some examples, the cell may not necessarily be stationary, and the geographical area of ​​the cell may move depending on the location of the mobile base station 110 (e.g., a mobile base station). In some examples, base stations 110 may interconnect with each other or with one or more other base stations 110 or network nodes (not shown) in the wireless network 100 using any suitable transport network via various types of backhaul interfaces (such as direct physical connections or virtual networks).

[0096] Wireless network 100 may include one or more relay stations. A relay station is an entity capable of receiving data transmissions from an upstream station (e.g., base station 110 or UE 120) and transmitting those data transmissions to a downstream station (e.g., UE 120 or base station 110). A relay station may be a UE 120 capable of relaying transmissions for other UE 120s. Figure 1 In the example shown, BS 110d (e.g., a relay base station) can communicate with BS 110a (e.g., a macro base station) and UE 120d to facilitate communication between BS 110a and UE 120d. The base station 110 for relay communication may be referred to as a relay station, relay base station, or relay.

[0097] The wireless network 100 can be a heterogeneous network comprising different types of base stations 110, such as macro base stations, pico base stations, femto base stations, or relay base stations. These different types of base stations 110 may have different transmit power levels, different coverage areas, or different effects on interference in the wireless network 100. For example, macro base stations may have high transmit power levels (e.g., 5 to 40 watts), while pico base stations, femto base stations, and relay base stations may have lower transmit power levels (e.g., 0.1 to 2 watts).

[0098] Network controller 130 can be coupled to or communicate with a group of base stations 110 and can provide coordination and control over these base stations 110. Network controller 130 can communicate with base stations 110 via backhaul communication links. Base stations 110 can communicate with each other directly or indirectly via wireless or wired backhaul communication links.

[0099] Each UE 120 may be distributed throughout the wireless network 100, and each UE 120 may be stationary or mobile. UE 120 may include, for example, access terminals, terminals, mobile stations, and / or subscriber units. UE 120 may be a cellular phone (e.g., a smartphone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet device, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device, a biometric device, a wearable device (e.g., a smartwatch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring or smart bracelet)), an entertainment device (e.g., a music device, a video device, or a satellite radio), an in-vehicle component or sensor, a smart meter / sensor, industrial manufacturing equipment, a GPS device, or any other suitable device configured to communicate via wireless or wired media.

[0100] Some UEs 120 may be considered Machine-Type Communication (MTC) UEs, or Evolved or Enhanced Machine-Type Communication (eMTC) UEs. MTC UEs or eMTC UEs may include, for example, robots, drones, remote devices, sensors, meters, monitors, or location tags, which can communicate with a base station, another device (e.g., a remote device), or some other entity. Some UEs 120 may be considered Internet of Things (IoT) devices, or may be implemented as NB-IoT (Narrowband IoT) devices. Some UEs 120 may be considered client equipment. UEs 120 may be included within a housing that houses the components of the UE 120, such as processor components or memory components. In some examples, the processor components and memory components may be coupled together. For example, the processor components (e.g., one or more processors) and memory components (e.g., memory) may be operatively coupled, communicatively coupled, electronically coupled, or electrically coupled.

[0101] Generally, any number of wireless networks 100 can be deployed in a given geographical area. Each wireless network 100 can support a specific RAT and can operate on one or more frequencies. A RAT can also be referred to as a radio technology or air interface. A frequency can also be referred to as a carrier or frequency channel. Each frequency can support a single RAT in a given geographical area to avoid interference between wireless networks using different RATs. In some cases, NR or 5G RAT networks can be deployed.

[0102] In some examples, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly using one or more sidelink channels (e.g., without using base station 110 as an intermediary). For example, UEs 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), or vehicle-to-pedestrian (V2P) protocols), or mesh networking. In such examples, UEs 120 may perform scheduling operations, resource selection operations, or other operations described elsewhere herein as performed by base station 110.

[0103] Devices in Wireless Network 100 can communicate using the electromagnetic spectrum, which can be subdivided into various categories, bands, or channels by frequency or wavelength. For example, each device in Wireless Network 100 can communicate using one or more operating bands. In 5G NR, two initial operating bands have been designated as frequency ranges FR1 (410 MHz – 7.125 GHz) and FR2 (24.25 GHz – 52.6 GHz). It should be understood that although a portion of FR1 is greater than 6 GHz, FR1 is generally (interchangeably) referred to as the “sub-6 GHz” band in various documents and articles. Similar naming issues sometimes arise regarding FR2, although it is different from the Very High Frequency (EHF) band (30 GHz – 300 GHz) designated as the “millimeter wave” band by the International Telecommunication Union (ITU), FR2 is generally (interchangeably) referred to as the “millimeter wave” band in various documents and articles.

[0104] The frequencies between FR1 and FR2 are generally referred to as intermediate frequency (IF) bands. Recent 5G NR studies have designated the operating bands of these IF bands as the frequency range designation FR3 (7.125 GHz – 24.25 GHz). Bands falling within FR3 can inherit FR1 or FR2 characteristics, thus effectively extending the features of FR1 or FR2 into the IF band. Additionally, higher frequency bands are currently being explored to extend 5G NR operation above 52.6 GHz. For example, three higher operating frequency bands have been designated as the frequency range designations FR4a or FR4-1 (52.6 GHz – 71 GHz), FR4 (52.6 GHz – 114.25 GHz), and FR5 (114.25 GHz – 300 GHz). Each of these higher frequency bands falls within the EHF band.

[0105] In light of these examples, unless otherwise stated, it should be understood that, if used herein, the term "sub-6 GHz" can broadly refer to frequencies less than 6 GHz, frequencies within FR1, or frequencies that may include the intermediate frequency band. Furthermore, unless otherwise stated, it should be understood that, if used herein, the term "millimeter wave" can broadly refer to frequencies that may include the intermediate frequency band, frequencies within FR2, FR4, FR4-a, FR4-1, or FR5, or frequencies within the EHF band. It is conceivable that the frequencies included in these operating bands (e.g., FR1, FR2, FR3, FR4, FR4-a, FR4-1, or FR5) can be modified, and the techniques described herein are applicable to those modified frequency ranges.

[0106] Figure 2 This is a diagram illustrating example 200 of communication between base station 110 and UE 120 in wireless network 100. Base station 110 may be equipped with a set of antennas 234a to 234t, such as T antennas (T ≥ 1). UE 120 may be equipped with a set of antennas 252a to 252r, such as R antennas (R ≥ 1).

[0107] At base station 110, transmit processor 220 can receive data from data source 212 intended for UE 120 (or a group of UEs 120). Transmit processor 220 can use one or more Channel Quality Indicators (CQIs) received from UE 120 to select one or more modulation and coding schemes (MCSs) for that UE 120. Base station 110 can use the selected MCSs for UE 120 to process (e.g., encode and modulate) the data for UE 120 and can provide data symbols to UE 120. Transmit processor 220 can process system information (e.g., semi-static resource partitioning information (SRPI)) and control information (e.g., CQI requests, grants, or higher-layer signaling) and provide overhead symbols and control symbols. Transmit processor 220 can generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS) or demodulation reference signals (DMRS)) and synchronization signals (e.g., primary synchronization signal (PSS) or secondary synchronization signal (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 can perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, or reference symbols where applicable, and can convert the output symbol stream set (e.g., T Each output symbol stream is provided to the corresponding modem 232 set (e.g., ...). TEach modem 232 has a modulator (shown as modems 232a to 232t). For example, each output symbol stream may be provided to the modulator component (shown as MOD) of modem 232. Each modem 232 may use a corresponding modulator component to process the corresponding output symbol stream (e.g., for OFDM) to obtain an output sample stream. Each modem 232 may further use a corresponding modulator component to process (e.g., convert to analog, amplify, filter, or upconvert) the output sample stream to obtain a downlink signal. Modems 232a to 232t may be connected via a corresponding set of antennas 234 (e.g., T Each antenna (shown as antennas 234a to 234t) is used to transmit downlink signal sets (e.g., T (One downlink signal).

[0108] At UE 120, the antenna set 252 (shown as antennas 252a to 252r) can receive downlink signals from base station 110 or other base stations 110 and can provide the received signal set (e.g., R (received signal) to modem 254 set (e.g., R Each modem 254 (shown as modems 254a to 254r) may be used. For example, each received signal may be provided to a demodulator component (shown as DEMOD) of modem 254. Each modem 254 may use a corresponding demodulator component to condition (e.g., filter, amplify, down-convert, or digitize) the received signal to obtain an input sample. Each modem 254 may use a demodulator component to further process the input sample (e.g., for OFDM) to obtain received symbols. MIMO detector 256 may obtain the received symbols from modem 254, perform MIMO detection on these received symbols where applicable, and provide detected symbols. Receiver processor 258 may process (e.g., demodulate and decode) these detected symbols, provide decoded data for UE 120 to data sink 260, and provide decoded control information and system information to controller / processor 280. The term "controller / processor" may refer to one or more controllers, one or more processors, or a combination thereof. The channel processor can determine parameters such as Reference Signal Received Power (RSRP), Received Signal Strength Indicator (RSSI), Reference Signal Received Quality (RSRQ), or CQI. In some examples, one or more components of the UE 120 may be included in a housing.

[0109] Network controller 130 may include communication unit 294, controller / processor 290, and memory 292. Network controller 130 may include one or more devices, such as those in the core network. Network controller 130 may communicate with base station 110 via communication unit 294.

[0110] One or more antennas (e.g., antennas 234a to 234t or antennas 252a to 252r) may include or be included within one or more antenna panels, one or more antenna groups, one or more antenna element assemblies, or one or more antenna arrays. Antenna panels, antenna groups, antenna element assemblies, or antenna arrays may include one or more antenna elements (within a single or multiple housings), coplanar antenna element assemblies, non-coplanar antenna element assemblies, or be coupled to one or more transmitting or receiving components (such as...). Figure 2 One or more antenna elements (one or more components).

[0111] On the uplink, at UE 120, transmit processor 264 can receive and process data from data source 262 and control information from controller / processor 280 (e.g., reports including RSRP, RSSI, RSRQ, or CQI). Transmit processor 264 can generate reference symbols for one or more reference signals. Symbols from transmit processor 264 may be pre-encoded by TX MIMO processor 266 where applicable, further processed by modem 254 (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to base station 110. In some examples, modem 254 of UE 120 may include modulator and demodulator. In some examples, UE 120 includes a transceiver. The transceiver may include any combination of antennas 252, modems 254, MIMO detector 256, receive processor 258, transmit processor 264, and / or TX MIMO processor 266. The transceiver may be used by a processor (e.g., controller / processor 280) and a memory 282 to perform aspects of any of the processes described herein.

[0112] At base station 110, uplink signals from UE 120 or other UEs may be received by antenna 234, processed by modem 232 (e.g., demodulator component of modem 232, shown as DEMOD), detected by MIMO detector 236 where applicable, and further processed by receiver processor 238 to obtain decoded data and control information transmitted by UE 120. Receiver processor 238 may provide the decoded data to data sink 239 and the decoded control information to controller / processor 240. Base station 110 may include communication unit 244 and may communicate with network controller 130 via communication unit 244. Base station 110 may include scheduler 246 to schedule one or more UEs 120 for downlink or uplink communication. In some examples, modem 232 of base station 110 may include modulator and demodulator. In some examples, base station 110 includes transceiver. The transceiver may include any combination of antennas 234, modems 232, MIMO detectors 236, receiver processors 238, transmitter processors 220, and / or TX MIMO processors 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to perform aspects of any of the processes described herein.

[0113] In some implementations, the controller / processor 280 may be a component of a processing system. A processing system generally refers to a system or a series of machines or components that receive inputs and process those inputs to produce a set of outputs (which may be passed to other systems or, for example, components of UE 120). For example, the “processing system” of UE 120 may refer to a system that includes various other components or sub-components of UE 120.

[0114] The processing system of UE 120 can interface with other components of UE 120 and can process information (such as inputs or signals) received from other components and output information to other components. For example, the chip or modem of UE 120 may include a processing system, a first interface for receiving or acquiring information, and a second interface for outputting, transmitting, or providing information. In some cases, the "first interface" may refer to the interface between the processing system of the chip or modem and the receiver, allowing UE 120 to receive information or signal input, and information can be transmitted to the processing system. In some cases, the "second interface" may refer to the interface between the processing system of the chip or modem and the transmitter, allowing UE 120 to transmit information output from the chip or modem. Those skilled in the art will readily recognize that the second interface can also acquire or receive information or signal input, and the first interface can also output, transmit, or provide information.

[0115] The controller / processor 240 of base station 110, the controller / processor 280 of UE 120, and / or Figure 2 Any other component may perform one or more techniques associated with modifying the transmit power of uplink signals related to different RATs, as described in more detail elsewhere herein. For example, the controller / processor 240 of base station 110, the controller / processor 280 of UE 120, or... Figure 2 Any other component (or combination of components) may perform or direct, for example Figure 7 The operation of process 700 and / or other processes as described. Memory 242 and memory 282 may store data and program code for base station 110 and UE 120, respectively. In some aspects, memory 242 and memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code or program code) for wireless communication. For example, when executed by one or more processors of base station 110 or UE 120 (e.g., directly executed, or executed after compilation, conversion, or interpretation), the one or more processors, UE 120, or base station 110 may cause the one or more processors, UE 120, or base station 110 to perform or direct, for example... Figure 7 The operation of process 700 or other processes as described herein.

[0116] In some aspects, a wireless communication device (e.g., a UE) includes: means for reducing a maximum transmit power limit of a first uplink signal associated with a first RAT to obtain a first transmit power; means for allocating a second transmit power remaining from the maximum transmit power limit to a second uplink signal associated with a second RAT; means for transmitting the first uplink signal associated with the first RAT to a first BS based on the first transmit power; and means for transmitting the second uplink signal associated with the second RAT to a second BS based on the second transmit power. In some aspects, means for the wireless communication device to perform the operations described herein may include, for example, one or more of the following: antenna 252, demodulator 254, MIMO detector 256, receiver processor 258, transmitter processor 264, TX MIMO processor 266, modulator 254, controller / processor 280, or memory 282.

[0117] although Figure 2 The boxes in the diagram are interpreted as different components, but the functions described with respect to these boxes can be implemented by a single hardware, software, or combination of components or various combinations of components. For example, the functions described with respect to transmit processor 264, receive processor 258, TX MIMO processor 266, or another processor can be performed by controller / processor 280 or performed under the control of controller / processor 280.

[0118] Figure 3 This is a diagram illustrating example 300 of a radio protocol architecture associated with a wireless communication device.

[0119] like Figure 3 As shown, radio protocol architectures for primary cell group (MCG) bearers, secondary cell group (SCG) bearers, and split bearers can be defined for wireless communication devices (e.g., UEs) in Multi-Radio Dual Connectivity (MR-DC) and Evolved Universal Terrestrial Radio Access-New Radio (E-UTRA-NR) Dual Connectivity (EN-DC). Split bearers can be associated with the NR Packet Data Convergence Protocol (PDCP) layer, the E-UTRA Radio Link Control (RLC) layer, and the NR RLC layer. MCG bearers can be associated with the E-UTRA / NR PDCP layer, the E-UTRA RLC layer, and the E-UTRA Media Access Control (MAC) layer. SCG bearers can be associated with the NR PDCP layer, the NR RLC layer, and the NR MAC layer.

[0120] Paths associated with the E-UTRA RLC layer or E-UTRA MAC layer can correspond to LTE paths or E-UTRA paths. Paths associated with the NR RLC layer or NR MAC layer can correspond to NR paths.

[0121] The wireless communication device can communicate with a first BS associated with an MCG-based bearer. The first BS can be associated with a first RAT (e.g., E-UTRA or LTE). The wireless communication device can also communicate with a second BS associated with an SCG-based bearer. The second BS can be associated with a second RAT (e.g., NR).

[0122] Figure 4 This is a diagram illustrating the relationship between the transmit power of uplink signals associated with different RATs and the explanation / modification. (Example 400) Figure 4 As shown, Example 400 includes communication between a wireless communication device (e.g., UE 120), a first base station (e.g., base station 110a or eNB), and a second base station (e.g., base station 110d or gNB). In some aspects, the wireless communication device, the first base station, and the second base station may be included in a wireless network (such as wireless network 100).

[0123] The deployment of communication systems (such as 5G NR systems) can involve various components or constituent parts arranged in multiple ways. In a 5G NR system or network, network nodes, network entities, network mobility elements, RAN nodes, core network nodes, network elements, or network devices (such as base stations (e.g., base station 110), or one or more units (or components) performing base station functionality) can be implemented in aggregated or decomposed architectures. For example, BSs (such as node B (NB), eNB, NRBS, 5G NB, gB node (gNB), access point (AP), TRP, cell, etc.) can be implemented as aggregated base stations (also known as self-contained BS or monolithic BS) or decomposed base stations.

[0124] Aggregated base stations can be configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node. Decentralized base stations can be configured to utilize a protocol stack that is physically or logically distributed across two or more units (such as one or more CUs, one or more DUs, or one or more RUs). In some respects, the CU can be implemented within a RAN node, and one or more DUs can coexist with the CU, or alternatively, can be geographically or virtually distributed across one or more other RAN nodes. DUs can be implemented to communicate with one or more RUs. Each of the CU, DU, and RU can also be implemented as a virtual unit, such as a Virtual Centralized Unit (VCU), a Virtual Distributed Unit (VDU), or a Virtual Radio Unit (VRU).

[0125] Base station type operation or network design can take into account the aggregation characteristics of base station functionality. For example, decomposed base stations can be used in IAB networks, O-RAN (such as network configurations sponsored by the O-RAN Alliance), or virtualized radio access networks (vRAN, also known as cloud radio access networks (C-RAN)). Decomposition can include distributing functionality across two or more units across various physical locations, as well as virtually distributing the functionality of at least one unit, which allows for flexibility in network design. Individual units in a decomposed base station or decomposed RAN architecture can be configured to communicate wirelessly with at least one other unit.

[0126] As indicated by reference numeral 402, the wireless communication device can reduce the maximum transmit power limit of the first uplink signal associated with LTE (e.g., a first RAT) to obtain a first transmit power. The wireless communication device can reduce the maximum transmit power limit of the first uplink signal such that sufficient transmit power can be used for the second uplink signal associated with NR (e.g., a second RAT). The wireless communication device can reduce the maximum transmit power limit of the first uplink signal based on the fact that the wireless communication device is located at the cell edge, where the second uplink signal associated with NR is more likely to be degraded compared to when the wireless communication device is located at the cell center.

[0127] In some aspects, the wireless communication device can receive an RRC configuration indicating a maximum transmit power limit from the first BS. In other words, the wireless communication device can reduce the maximum transmit power limit based on the RRC configuration indicating the maximum transmit power limit.

[0128] As shown by reference numeral 404, the wireless communication device may allocate the second transmit power remaining from the maximum transmit power limit to the second uplink signal associated with the NR (e.g., the second RAT). In some aspects, the first transmit power may be within a threshold amount of the second transmit power. In other words, the first transmit power may be substantially equal to the second transmit power. Alternatively, the first transmit power may be greater than the second transmit power because the LTE associated with the first transmit power may have a higher priority than the NR associated with the second transmit power.

[0129] In some respects, the wireless communication device can reduce the maximum transmit power limit such that the total transmit power of the first uplink signal and the second uplink signal is within the tolerance level of the maximum transmit power limit. In other words, the wireless communication device can reduce the maximum transmit power limit by an amount that will not cause the total transmit power to exceed the tolerance level of the maximum transmit power limit.

[0130] As an example, in a cell edge scenario, without reducing the maximum transmit power limit of the LTE signal, the LTE signal transmit power can be 23 dBm, and no transmit power can be allocated to the NR signal. As a result, the NR signal may be vulnerable to radio link failures (RLF) or be dropped after a period of time because the NR signal may have a lower priority than the LTE signal. However, when the maximum transmit power limit of the LTE signal is reduced, the LTE signal transmit power can be 21.5 dBm, and the NR signal transmit power can also be 21.5 dBm instead of -35 dBm without power sharing. In other words, a relatively small 1.5 dBm power backoff for the LTE signal can have a significant impact on the NR signal. Although the LTE signal transmit power is slightly reduced, the benefits to the NR signal transmit power may outweigh the loss of transmit power to the LTE signal.

[0131] Furthermore, the combined transmit power for both LTE and NR can be 24.5 dBm. This 24.5 dBm is within a ±2 dBm tolerance level of the maximum transmit power limit of 23 dBm. In other words, the total transmit power of 24.5 dBm can adhere to the maximum transmit power limit because it is subject to a ±2 dBm tolerance level. As a result, the transmit power tolerance can be used for overall throughput improvements and NR coverage enhancements.

[0132] In some respects, a wireless communication device can reduce the maximum transmit power limit based on whether a condition is met. In other words, when the condition is met, the wireless communication device can reduce the maximum transmit power limit. However, when the condition is not met, the wireless communication device may not reduce the maximum transmit power limit.

[0133] In some respects, the impact on LTE performance can be minimized because the maximum transmit power limit can be reduced only when certain conditions are met. For EN-DC, RRC traffic may flow through LTE, and maintaining LTE connectivity may be necessary for NR connectivity. As a result, conditions can be defined to reduce the LTE impact caused by reducing the maximum transmit power limit.

[0134] In some aspects, the wireless communication device can determine that a condition is met and can reduce the maximum transmit power limit when the path loss associated with LTE meets a threshold. For example, when the path loss associated with LTE is less than a specific threshold, the wireless communication device can back off the maximum transmit power limit for the first uplink signal (e.g., the LTE signal). On the other hand, when the path loss associated with LTE exceeds the specific threshold, the wireless communication device may not back off the maximum transmit power limit for the first uplink signal.

[0135] In some aspects, the wireless communication device can determine whether the condition is met and whether the maximum transmit power limit can be reduced based on the uplink MCS or the modulation order associated with LTE. For example, when the uplink MCS associated with LTE is a relatively low modulation order or a specific MCS, the wireless communication device can waive the maximum transmit power limit for the first uplink signal (e.g., the LTE signal). On the other hand, when the uplink MCS associated with LTE is a relatively high modulation order or a specific MCS, the wireless communication device may not waive the maximum transmit power limit for the first uplink signal. In some aspects, the wireless communication device may or may not waive the maximum transmit power limit depending on the modulation order, which can be pi / 2 (or π / 2) binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), 16 quadrature amplitude modulation (16QAM), 64 quadrature amplitude modulation (64QAM), or 256 quadrature amplitude modulation (256QAM).

[0136] In some aspects, the wireless communication device can determine that the condition is met and the maximum transmit power limit can be reduced based on the traffic type associated with the first uplink signal. For example, the wireless communication device can circumvent the maximum transmit power limit for LTE traffic. However, the wireless communication device can determine that the condition is not met and the maximum transmit power limit can not be reduced when the first uplink signal is associated with a PRACH or PUCCH transmission. Furthermore, the wireless communication device can determine that the condition is not met and the maximum transmit power limit can not be reduced when the first uplink signal appears within a threshold time period after the handover or initial access procedure of the wireless communication device.

[0137] In some respects, the wireless communication device can determine that a condition is met and that the maximum transmit power limit can be reduced based on the effective SNR level associated with LTE meeting a threshold. For example, when the effective SNR level exceeds the threshold, the maximum transmit power limit can be reduced, but when the effective SNR level is less than the threshold, the maximum transmit power limit can not be reduced. Furthermore, the wireless communication device can determine that a condition is met and that the maximum transmit power limit can be reduced based on the number of layers associated with the spatial multiplexing capability of the wireless communication device. For example, when the number of layers is equal to one (1), the maximum transmit power limit can be reduced, but when the number of layers is greater than one, the maximum transmit power limit can not be reduced.

[0138] In some aspects, the wireless communication device can determine whether to reduce the maximum transmit power limit (e.g., subject LTE power to power backoff) based on path loss, MCS, modulation order, traffic type (e.g., PRACH or PUCCH transmission), effective SNR, or number of layers. As a result, the impact on LTE performance can be minimized because less power is allocated to LTE.

[0139] As shown by reference numeral 406 in the accompanying drawings, the wireless communication device can transmit a first uplink signal associated with LTE to the first BS based on a first transmit power. The first transmit power may be less than a maximum transmit power limit.

[0140] As shown by reference numeral 408 in the attached drawing, the wireless communication device can transmit a second uplink signal associated with NR to the second BS based on a second transmit power. The second transmit power can be equal to or less than the first transmit power. Furthermore, the second uplink signal can overlap with the first uplink signal in time.

[0141] Figure 5 This is a diagram illustrating the relationship between the transmit power of uplink signals associated with different RATs and the explanation of modifications.

[0142] As indicated by reference numeral 502, wireless communication devices (such as those combining...) Figure 4 The described wireless communication device can calculate the required SNR level per resource block (RB) (e.g., SNR_wanted ( SNR required The required SNR level can be based on power per RB and can also be based on a 15 kHz subcarrier spacing (SCS). The required SNR level can be based on noise power and nominal power. For example, the required SNR level can be 35 to 44 dB. Therefore, the required SNR level can be the minimum downlink SNR level required by the wireless communication device.

[0143] As shown by reference numeral 504 in the attached figure, the wireless communication device can calculate the required transmit power level (e.g., P_required) to meet the desired SNR level. The wireless communication device can calculate the required transmit power level based on LTE transmit power calculations, while correcting for factors such as alpha value or transmit power control.

[0144] As shown by reference numeral 506 in the attached figure, the wireless communication device can calculate the difference between the actual transmit power and the required transmit power. P-diff ).

[0145] As indicated by reference numeral 508 in the attached figure, the wireless communication device can calculate P-diffThe difference between the actual transmit power and the required SNR level. In other words, it can be based on the difference between the actual transmit power and the required transmit power (SNR level). P-diff ) and required SNR level ( SNR_wanted The expected SNR is calculated by the difference between the two. SNR_expected (SNR_expected) ).

[0146] As shown by reference numeral 510 in the attached figure, when the expected SNR meets a threshold (e.g., SNR_threshold ( SNR threshold When the expected SNR is greater than or equal to a threshold and the modulation order is QPSK, the wireless communication device may enable a reduced (or revised) LTE maximum transmit power limit. For example, when the expected SNR is greater than or equal to a threshold and the modulation order is QPSK, the wireless communication device may enable a reduced LTE maximum transmit power limit.

[0147] As shown by reference numeral 512 in the attached figure, when the expected SNR does not meet the threshold (e.g., SNR_threshold In some cases, the wireless communication device may not enable the reduced LTE maximum transmit power limit. For example, when the expected SNR is less than a threshold and the modulation order is not QPSK, the wireless communication device may not enable the reduced LTE maximum transmit power limit.

[0148] Figure 6 This is a diagram illustrating, for example, an example process 600 performed by a wireless communication device. Process 600 is an example of an operation performed by a wireless communication device (e.g., UE 120) that relates to modifying the transmit power of an uplink signal associated with a different RAT.

[0149] like Figure 6 As shown, in some aspects, process 600 may include reducing the maximum transmit power limit of the first uplink signal associated with the first RAT to obtain a first transmit power (block 610). For example, wireless communication devices (such as those using...) Figure 7 The reduction component 708 described herein can reduce the maximum transmit power limit of the first uplink signal associated with the first RAT to obtain the first transmit power, as described above.

[0150] As in Figure 6 As further shown, in some aspects, process 600 may include allocating the second transmit power remaining from the maximum transmit power limit to a second uplink signal associated with the second RAT (block 620). For example, wireless communication devices (such as those using...) Figure 7 The allocation component 710 described above can allocate the second transmit power remaining from the maximum transmit power limit to the second uplink signal associated with the second RAT.

[0151] As in Figure 6As further shown, in some aspects, process 600 may include transmitting a first uplink signal associated with the first RAT to the first BS based on a first transmit power (block 630). For example, wireless communication devices (such as those using...) Figure 7 The transmission component 704 described herein can transmit a first uplink signal associated with the first RAT to the first BS based on a first transmit power, as described above.

[0152] As in Figure 6 As further shown, in some aspects, process 600 may include transmitting a second uplink signal associated with the second RAT to the second BS based on the second transmit power (block 640). For example, wireless communication devices (such as those using...) Figure 7 The transmission component 704 described herein can transmit a second uplink signal associated with the second RAT to the second BS based on the second transmit power, as described above.

[0153] Process 600 may include additional aspects, such as any single aspect or any combination of aspects described below or in conjunction with one or more other processes described elsewhere herein.

[0154] In the first additional aspect, the first RAT is the Long Term Evolution RAT, and the second RAT is the New Radio RAT.

[0155] In a second additional aspect, either alone or in combination with the first aspect, the second uplink signal overlaps with the first uplink signal in time.

[0156] In a third additional aspect, either alone or in combination with one or more of the first and second aspects, the total transmit power of the first uplink signal and the second uplink signal is within the tolerance level of the maximum transmit power.

[0157] In a fourth additional aspect, either alone or in combination with one or more of the first to third aspects, process 600 includes: receiving an RRC configuration indicating the maximum transmit power limit from one of the first BS or the second BS.

[0158] In a fifth additional aspect, the wireless communication device is located at the edge of a cell, either alone or in combination with one or more of the first to fourth aspects.

[0159] In a sixth additional aspect, either alone or in combination with one or more of the first to fifth aspects, process 600 includes: reducing the maximum transmit power limit based on the condition being met.

[0160] In the seventh additional aspect, either alone or in combination with one or more of the first to sixth aspects, the condition is satisfied and the maximum transmit power limit is reduced when the path loss associated with the first RAT meets the threshold.

[0161] In the eighth additional aspect, the condition is satisfied and the maximum transmit power limit is reduced, either alone or in combination with one or more of the first to seventh aspects, based on one or more of the uplink MCS or modulation order associated with the first RAT.

[0162] In the ninth additional aspect, the condition is satisfied and the maximum transmit power limit is reduced, either alone or in combination with one or more of the first to eighth aspects, based on the traffic type associated with the first uplink signal.

[0163] In the tenth additional aspect, either alone or in combination with one or more of the first to ninth aspects, the condition is not met and the maximum transmit power limit is not reduced when the first uplink signal is associated with a PRACH transmission.

[0164] In the eleventh additional aspect, either alone or in combination with one or more of the first to tenth aspects, the condition is not met and the maximum transmit power limit is not reduced when the first uplink signal is associated with PUCCH transmission.

[0165] In the twelfth additional aspect, either alone or in combination with one or more of the first to eleventh aspects, the condition is not met and the maximum transmit power limit is not reduced when the first uplink signal appears within a threshold time period after the handover of the wireless communication device.

[0166] In the thirteenth additional aspect, either alone or in combination with one or more of the first to twelfth aspects, the condition is not met and the maximum transmit power limit is not reduced when the first uplink signal appears within a threshold time period after the initial access procedure of the wireless communication device.

[0167] In the fourteenth additional aspect, either alone or in combination with one or more of the first to thirteenth aspects, a threshold is met based on the effective SNR level associated with the first RAT at the base station, the condition is satisfied, and the maximum transmit power limit is reduced.

[0168] In the fifteenth additional aspect, either alone or in combination with one or more of the first to fourteenth aspects, the condition is satisfied and the maximum transmit power limit is reduced based on the number of layers associated with the spatial multiplexing capability of the wireless communication device.

[0169] although Figure 6An example box of process 600 is shown, but in some respects, process 600 may include... Figure 6 The boxes depicted in the process are compared to additional boxes, fewer boxes, different boxes, or boxes arranged differently. Additionally or alternatively, two or more boxes in process 600 can be executed in parallel.

[0170] Figure 7 This is a block diagram of an example device 700 for wireless communication. Device 700 may be a wireless communication device, or a wireless communication device may include device 700. In some aspects, device 700 includes a receiving component 702 and a transmitting component 704, which may communicate with each other (e.g., via one or more buses or one or more other components). As shown, device 700 may use the receiving component 702 and the transmitting component 704 to communicate with another device 706 (such as a UE, a base station, or another wireless communication device). As further shown, device 700 may include one or more of a reduction component 708 or an allocation component 710, etc.

[0171] In some respects, device 700 can be configured to perform the functions described herein. Figure 4-5 One or more operations described herein. Additionally or alternatively, apparatus 700 may be configured to perform one or more processes described herein (such as...). Figure 6 Process 600). In some aspects, apparatus 700 and / or Figure 7 One or more components shown may include the above combination Figure 2 One or more components of the described wireless communication device. Additionally or alternatively, Figure 7 One or more components shown can be combined as described above. Figure 2 Implementation within one or more of the described components. Additionally or alternatively, one or more components in the set of components may be implemented at least partially as software stored in memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and may be executed by a controller or processor to perform the function or operation of that component.

[0172] Receiver 702 may receive communications (such as reference signals, control information, data communications, or combinations thereof) from device 706. Receiver 702 may provide the received communications to one or more other components of device 700. In some aspects, receiver 702 may perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.), and may provide the processed signal to one or more other components of device 700. In some aspects, receiver 702 may include combinations of the above. Figure 2The described wireless communication device includes one or more antennas, demodulators, MIMO detectors, receiver processors, controllers / processors, memories, or combinations thereof.

[0173] The transmission component 704 can transmit communications (such as reference signals, control information, data communications, or combinations thereof) to the device 706. In some aspects, one or more other components of the device 700 can generate communications and provide the generated communications to the transmission component 704 for transmission to the device 706. In some aspects, the transmission component 704 can perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, encoding, etc.) on the generated communications and can transmit the processed signals to the device 706. In some aspects, the transmission component 704 can include combinations of the above. Figure 2 The described wireless communication device includes one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof. In some aspects, the transmitting component 704 may be co-located with the receiving component 702 in a transceiver.

[0174] The reduction component 708 can reduce the maximum transmit power limit of the first uplink signal associated with the first RAT to obtain a first transmit power. The allocation component 710 can allocate the second transmit power remaining from the maximum transmit power limit to the second uplink signal associated with the second RAT. The transmission component 704 can transmit the first uplink signal associated with the first RAT to the first BS based on the first transmit power. The transmission component 704 can transmit the second uplink signal associated with the second RAT to the second BS based on the second transmit power. The receiving component 702 can receive an RRC configuration indicating the maximum transmit power limit from either the first BS or the second BS.

[0175] Figure 7 The number and arrangement of components shown are provided as an example. In practice, different arrangements may exist. Figure 7 The components shown are compared to additional components, fewer components, different components, or components arranged differently. Furthermore, Figure 7 The two or more components shown can be implemented within a single component, or Figure 7 The single component shown can be implemented as multiple distributed components. Additionally or alternatively, Figure 7 The set of components shown (e.g., one or more components) can perform actions described as being performed by Figure 7 The other set of components shown performs one or more functions.

[0176] The following provides an overview of some aspects of this disclosure: Aspect 1: A method performed by a wireless communication device, comprising: reducing a maximum transmit power limit of a first uplink signal associated with a first radio access technology (RAT) to obtain a first transmit power; allocating a second transmit power remaining from the maximum transmit power limit to a second uplink signal associated with a second RAT; transmitting the first uplink signal associated with the first RAT to a first base station (BS) based on the first transmit power; and transmitting the second uplink signal associated with the second RAT to a second BS based on the second transmit power.

[0177] Aspect 2: The method of aspect 1, wherein the first RAT is a Long Term Evolution RAT and the second RAT is a New Radio RAT.

[0178] Aspect 3: The method of any one of Aspects 1 to 2, wherein the second uplink signal overlaps with the first uplink signal in time.

[0179] Aspect 4: The method of any one of Aspects 1 to 3, wherein the total transmit power of the first uplink signal and the second uplink signal is within the tolerance level of the maximum transmit power.

[0180] Aspect 5: The method of any one of Aspects 1 to 4 further includes: receiving a Radio Resource Control Configuration (RRC) indicating the maximum transmit power limit from one of the first BS or the second BS.

[0181] Aspect 6: The method of any one of Aspects 1 to 5, wherein: the wireless communication device is located at the edge of the cell.

[0182] Aspect 7: The method of any one of Aspects 1 to 6, wherein reducing the maximum transmit power limit includes reducing the maximum transmit power limit based on the condition being met.

[0183] Aspect 8: The method of aspect 7, wherein the condition is satisfied and the maximum transmit power limit is reduced when the path loss associated with the first RAT meets the threshold.

[0184] Aspect 9: The method of aspect 7, wherein the condition is satisfied and the maximum transmit power limit is reduced based on one or more of the uplink modulation and coding scheme (MCS) or modulation order associated with the first RAT.

[0185] Aspect 10: The method of aspect 7, wherein the condition is satisfied and the maximum transmit power limit is reduced based on the traffic type associated with the first uplink signal.

[0186] Aspect 11: The method of aspect 7, wherein the condition is not met and the maximum transmit power limit is not reduced when the first uplink signal is associated with a physical random access channel (PRACH) transmission.

[0187] Aspect 12: The method of aspect 7, wherein the condition is not met and the maximum transmit power limit is not reduced when the first uplink signal is associated with the transmission of the physical uplink control channel (PUCCH).

[0188] Aspect 13: The method of aspect 7, wherein when the first uplink signal appears within a threshold time period after the handover of the wireless communication device, the condition is not met and the maximum transmit power limit is not reduced.

[0189] Aspect 14: The method of aspect 7, wherein the condition is not met and the maximum transmit power limit is not reduced when the first uplink signal appears within a threshold time period after the initial access procedure of the wireless communication device.

[0190] Aspect 15: The method of aspect 7, wherein the effective signal-to-noise ratio (SNR) level associated with the first RAT at the base station meets a threshold, the condition is met and the maximum transmit power limit is reduced.

[0191] Aspect 16: The method of aspect 7, wherein the condition is satisfied and the maximum transmit power limit is reduced based on the number of layers associated with the spatial multiplexing capability of the wireless communication device.

[0192] Aspect 17: An apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform methods as described in one or more aspects of Aspects 1-16.

[0193] Aspect 18: An apparatus for wireless communication, comprising a memory and one or more processors coupled to the memory, the one or more processors being configured to perform methods as described in one or more aspects of aspects 1-16.

[0194] Aspect 19: An apparatus for wireless communication, comprising at least one means for performing a method as described in one or more aspects of aspects 1-16.

[0195] Aspect 20: A non-transient computer-readable medium storing code for wireless communication, the code including instructions executable by a processor to perform methods as described in one or more aspects of aspects 1-16.

[0196] Aspect 21: A non-transient computer-readable medium storing a set of instructions for wireless communication, the set of instructions including one or more instructions which, when executed by one or more processors of a device, cause the device to perform methods as described in one or more aspects of aspects 1-16.

[0197] The foregoing disclosure provides explanations and descriptions, but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations may be made based on the disclosure or may be obtained through practice.

[0198] As used herein, the term "component" is intended to be interpreted broadly as hardware, firmware, or a combination of hardware and software. As used herein, a processor is implemented using hardware, firmware, or a combination of hardware and software. As used herein, the phrase "based on" is intended to be interpreted broadly as "at least partially based on". As used herein, depending on the context, "meeting a threshold" can refer to a value greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc. As used herein, the phrase referring to "at least one of" a list of items means any combination of those items, including individual members. As an example, "at least one of a, b, or c" is intended to cover: a, b, c, a+b, a+c, b+c, and a+b+c.

[0199] Furthermore, as used herein, the articles “a” and “a certain” are intended to include one or more items and can be used interchangeably with “one or more”. Additionally, as used herein, the article “the” is intended to include one or more items referenced in conjunction with the article “the” and can be used interchangeably with “one or more”. Furthermore, as used herein, the terms “set” and “group” are intended to include one or more items (e.g., related items, unrelated items, or a combination of related and unrelated items) and can be used interchangeably with “one or more”. In cases where only one item is intended, the phrase “only one” or similar language is used. Moreover, as used herein, the terms “have,” “contain,” “include,” etc., are intended to be open-ended terms that do not limit the elements they modify (e.g., the element “has” A may also have B). Moreover, as used herein, the term “or” when used in a sequence is intended to be inclusive and can be used interchangeably with “and / or” unless otherwise explicitly stated (e.g., in conjunction with “either of” or “only one of”).

[0200] The various descriptive logics, logic blocks, modules, circuits, and algorithmic processes described in conjunction with the implementations disclosed herein can be implemented as electronic hardware, computer software, or a combination of both. This interchangeability between hardware and software has been generally described in its functional form and is explained in the various descriptive components, blocks, modules, circuits, and processes described herein. Whether such functionality is implemented in hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0201] Hardware and data processing apparatuses for implementing the various descriptive logics, logic blocks, modules, and circuits described in conjunction with the aspects disclosed herein may be implemented or executed using general-purpose single-chip or multi-chip processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic, discrete hardware components, or any combination thereof. A general-purpose processor may be a microprocessor, or any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors cooperating with a DSP core, or any other such configuration. In some aspects, specific processes and methods may be performed by circuitry systems dedicated to a given function.

[0202] In one or more aspects, the described functionality may be implemented in hardware, digital electronic circuit systems, computer software, firmware (including the structures disclosed herein and their structural equivalents), or any combination thereof. Aspects of the subject matter described herein may also be implemented as one or more computer programs (such as one or more modules of computer program instructions) encoded on a computer storage medium for execution by a data processing apparatus or for controlling the operation of the data processing apparatus.

[0203] If implemented in software, the functions can be stored or transmitted as one or more instructions or codes on or through a computer-readable medium. The processes of the methods or algorithms disclosed herein can be implemented in a processor-executable software module that can reside on a computer-readable medium. Computer-readable media include both computer storage media and communication media, including any medium that can be implemented to transfer a computer program from one location to another. Storage media can be any available medium accessible to a computer. By way of example and not limitation, such computer-readable media may include random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store desired program code in the form of instructions or data structures and is accessible to a computer. Any connection may also be properly referred to as a computer-readable medium. As used herein, disk and disc include compact discs (CDs), laser discs, optical discs, digital multi-purpose discs (DVDs), floppy disks, and Blu-ray discs. Disks typically reproduce data magnetically, while discs reproduce data optically using lasers. The combination of media used for scanning in this document should also be included within the scope of computer-readable media. Additionally, the operation of a method or algorithm may reside as one of codes and instructions, or any combination or set of codes and instructions, on machine-readable and computer-readable media that can be incorporated into a computer program product.

[0204] Various modifications to the aspects described in this disclosure may be apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the spirit or scope of this disclosure. Therefore, the claims are not intended to be limited to the aspects shown herein, but are to be granted the broadest scope consistent with this disclosure, the principles disclosed herein, and the novel features.

[0205] In addition, those skilled in the art will readily appreciate that the terms “upper” and “lower” are sometimes used for the convenience of describing the figures and indicate relative positions corresponding to the orientation of the figures on the correctly oriented page, and may not reflect the true orientation of any device as implemented.

[0206] Some features described in the context of separate aspects in this specification may also be implemented in combination in a single aspect. Conversely, various features described in the context of a single aspect may also be implemented separately or in any suitable sub-combination in multiple aspects. Furthermore, although features may be described as operating in certain combinations and even originally claimed in this way, one or more features from the claimed combination may be removed from that combination in some cases, and the claimed combination may be for sub-combinations or variations thereof.

[0207] Similarly, although the operations are depicted in a specific order in the accompanying drawings, this should not be construed as requiring such operations to be performed in the specific order shown or sequentially, or requiring the performance of all explained operations to achieve the desired result. Furthermore, the drawings may schematically depict one or more example processes in the form of flowcharts. However, other operations not depicted may be incorporated into the schematically explained example processes. For example, one or more additional operations may be performed before, after, simultaneously with, or between any explained operation. In some contexts, multitasking and parallel processing may be advantageous. Moreover, the separation of various system components in the described aspects should not be construed as requiring such separation in all aspects, and it should be understood that the described program components and systems can generally be integrated together in a single software product or packaged into multiple software products. Additionally, other aspects also fall within the scope of the appended claims. In some cases, the actions recited in the claims may be performed in a different order and still achieve the desired result.

Claims

1. A method performed by a wireless communication device, comprising: Acquire a first transmit power associated with transmitting a first uplink signal associated with a first radio access technology (RAT); The second transmit power is allocated to the second uplink signal associated with the second RAT, wherein the power used associated with the first RAT takes precedence over the second RAT, and wherein the total transmit power of the first uplink signal and the second uplink signal is within the tolerance level of the maximum transmit power limit; Transmit the first uplink signal; and Transmit the second uplink signal.

2. The method of claim 1, wherein the total transmit power is 24.5 dBm.

3. The method of claim 1, wherein the tolerance level is 2 dBm.

4. The method of claim 1, wherein the maximum transmit power limit is 23 dBm.

5. The method of claim 1, wherein the second uplink signal overlaps with the first uplink signal in time.

6. The method of claim 1, further comprising: Receive the Radio Resource Control (RRC) configuration indicating the maximum transmit power limit.

7. The method of claim 1, wherein the second transmission power is less than or equal to the first transmission power.

8. The method of claim 1, wherein the first transmit power is obtained in relation to the wireless communication device being located at the edge of a cell.

9. The method of claim 1, wherein the first RAT is a Long Term Evolution (LTE) RAT and the second RAT is a New Radio (NR) RAT.

10. A user equipment (UE), comprising: A processing system, comprising one or more processors and one or more memories coupled to the processors for storing code, the processing system being configured to cause the UE to: Acquire a first transmit power associated with transmitting a first uplink signal associated with a first radio access technology (RAT); The second transmit power is allocated to the second uplink signal associated with the second RAT, wherein the power used associated with the first RAT takes precedence over the second RAT, and wherein the total transmit power of the first uplink signal and the second uplink signal is within the tolerance level of the maximum transmit power limit; Output the first uplink signal; and Output the second uplink signal.

11. The UE of claim 10, wherein the total transmit power is 24.5 dBm.

12. The UE of claim 10, wherein the tolerance level is 2 dBm.

13. The UE of claim 10, wherein the maximum transmit power limit is 23 dBm.

14. The UE of claim 10, wherein the second uplink signal overlaps with the first uplink signal in time.

15. The UE of claim 10, further comprising: Receive the Radio Resource Control (RRC) configuration indicating the maximum transmit power limit.

16. The UE of claim 10, wherein the second transmit power is less than or equal to the first transmit power.

17. The UE of claim 10, wherein the first transmit power is obtained in relation to the wireless communication device being located at the edge of a cell.

18. The UE of claim 10, wherein the first RAT is a Long Term Evolution (LTE) RAT and the second RAT is a New Radio (NR) RAT.

19. A method performed by a wireless communication device, comprising: Acquire a first transmit power associated with transmitting a first uplink signal associated with a first radio access technology (RAT); Receive Radio Resource Control (RRC) configuration indicating maximum transmit power limits; The second transmit power is allocated to the second uplink signal associated with the second RAT, wherein the power associated with the first RAT is used preferentially over the second RAT, and wherein the total transmit power of the first uplink signal and the second uplink signal is within the tolerance level of the maximum transmit power limit; Transmit the first uplink signal; and Transmit the second uplink signal, wherein the second uplink signal overlaps with the first uplink signal in time.

20. The method of claim 19, wherein the total transmit power is 24.5 dBm.

21. The method of claim 19, wherein the tolerance level is 2 dBm.

22. The method of claim 19, wherein the maximum transmit power limit is 23 dBm.

23. The method of claim 19, wherein the second transmit power is 21.5 dBm.

24. The method of claim 19, wherein the first transmit power is obtained in association with a path loss associated with the first RAT satisfying a threshold.

25. The method of claim 19, wherein the second transmit power is less than or equal to the first transmit power.

26. The method of claim 19, wherein the first transmit power is obtained in relation to the wireless communication device being located at the edge of a cell.

27. The method of claim 19, wherein the first RAT is a Long Term Evolution (LTE) RAT and the second RAT is a New Radio (NR) RAT.

28. A user equipment (UE), comprising: A processing system, comprising one or more processors and one or more memories coupled to the processors for storing code, the processing system being configured to cause the UE to: Acquire a first transmit power associated with transmitting a first uplink signal associated with a first radio access technology (RAT); Receive Radio Resource Control (RRC) configuration indicating maximum transmit power limits; The second transmit power is allocated to the second uplink signal associated with the second RAT, wherein the power associated with the first RAT is used preferentially over the second RAT, and wherein the total transmit power of the first uplink signal and the second uplink signal is within the tolerance level of the maximum transmit power limit; Transmit the first uplink signal; and Transmit the second uplink signal, wherein the second uplink signal overlaps with the first uplink signal in time.

29. The UE of claim 28, wherein the total transmit power is 24.5 dBm.

30. The UE of claim 28, wherein the tolerance level is 2 dBm.

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