Transmit power prioritization in inter-band carrier aggregation

Abstract

Aspects of the present disclosure relate to inter-band carrier aggregation. For example, a user equipment (UE) may obtain a measured configured maximum UE output power (P UMAX ), and will prioritize aspects of UE transmissions that will contribute to PUMAX. Prioritization can be based on, for example, frequency band priority, channel priority, service priority, or any combination thereof. Based on the priority order of the features, the power levels associated with the prioritized features can be changed by changing the power management maximum power reduction (P‑MPR) for each feature associated with the transmission. The UE can determine whether the UE's electromagnetic power density exposure level is equal to or less than a predetermined maximum permitted exposure (MPE) level. If the electromagnetic power density exposure level is greater than the predetermined MPE level, the UE can continue to reduce the transmitter output power. Other aspects, embodiments, and features are also claimed and described.

Description

Technical Field

[0001] The techniques discussed below relate generally to wireless communication systems, and more particularly, to transmit power prioritization in inter-band carrier aggregation. Background Art

[0002] The electromagnetic power radiated by the user equipment (UE) should comply with the maximum permissible exposure (MPE) level. Changing the maximum output power of the UE can help control the electromagnetic power density exposure level associated with the UE and can bring the radiated electromagnetic power density to an acceptable MPE level.

[0003] As the demand for mobile broadband access continues to increase, research and development continues to advance wireless communication technologies to both meet the growing demand for mobile broadband access and to advance and enhance the user experience of mobile communications. Summary of the invention

[0004] A simplified overview of one or more aspects of the present disclosure is given below to provide a basic understanding of these aspects. This overview is not an extensive review of all expected features of the present disclosure, and is neither intended to identify the key or important elements of all aspects of the present disclosure, nor is it intended to describe the scope of any or all aspects of the present disclosure. Its sole purpose is to present some concepts of one or more aspects of the present disclosure in a simplified form as a preface to a more detailed description presented later.

[0005] The present disclosure relates to inter-band carrier aggregation. For example, a user equipment (UE) may obtain a measured configured maximum UE output power (P UMAX ), and will contribute to the realization of P UMAX Prioritization may be based on, for example, frequency band priority, channel priority, service priority, or any combination thereof. According to the priority order of the features, the power levels associated with the prioritized features may be changed by changing the power management maximum power reduction (P-MPR) of each feature associated with the transmission. The UE may determine whether the electromagnetic power density exposure level of the UE is equal to or lower than a predetermined maximum permitted exposure (MPE) level. If the electromagnetic power density exposure level is greater than the predetermined MPE level, the UE may continue to reduce the transmitter output power.

[0006] According to an example, a method of wireless communication using inter-band carrier aggregation at a user equipment (UE) may include: determining a maximum user equipment (UE) output power (P UMAX) value; determining a priority order in which the value of the power management maximum power reduction (P-MPR) of each component carrier f of the service cell c with non-zero authorized transmit power is to be changed; reducing the transmitter output power of each carrier f of the service cell c with non-zero authorized transmit power according to the determined priority order by increasing the P-MPR of the carrier f of the service cell c; determining an electromagnetic power density exposure level; determining whether the electromagnetic power density exposure level is equal to or lower than a predetermined maximum permitted exposure (MPE) level; and if the electromagnetic power density exposure level is greater than the predetermined MPE level, returning to reducing the transmitter output power.

[0007] According to another example, an apparatus for wireless communication using inter-band carrier aggregation at a user equipment (UE) may include: determining a maximum user equipment (UE) output power (P UMAX ) value; a component for determining a priority order in which the value of the power management maximum power reduction (P-MPR) of each component carrier f of the service cell c with non-zero authorized transmit power is to be changed; a component for reducing the transmitter output power of each carrier f of the service cell c with non-zero authorized transmit power according to the determined priority order by increasing the P-MPR of the carrier f of the service cell c; a component for determining an electromagnetic power density exposure level; a component for determining whether the electromagnetic power density exposure level is equal to or lower than a predetermined maximum permitted exposure (MPE) level; and a component for returning to reducing the transmitter output power if the electromagnetic power density exposure level is greater than a predetermined MPE level.

[0008] According to yet another example, a non-transitory computer-readable medium storing computer-executable code is described, including code for causing a computer to perform the following operations: determining a maximum user equipment (UE) output power (P UMAX ) value; determining a priority order in which the value of the power management maximum power reduction (P-MPR) of each component carrier f of the service cell c with non-zero authorized transmit power is to be changed; reducing the transmitter output power of each carrier f of the service cell c with non-zero authorized transmit power according to the determined priority order by increasing the P-MPR of the carrier f of the service cell c; determining an electromagnetic power density exposure level; determining whether the electromagnetic power density exposure level is equal to or lower than a predetermined maximum permitted exposure (MPE) level; and if the electromagnetic power density exposure level is greater than the predetermined MPE level, returning to reducing the transmitter output power.

[0009] According to yet another example, an apparatus for wireless communication may be described, including a processor, a transceiver communicatively coupled to the processor, and a memory communicatively coupled to the processor. According to this example, the processor may be configured to: determine a maximum user equipment (UE) output power (P UMAX ) value; determining a priority order in which the value of the power management maximum power reduction (P-MPR) of each component carrier f of the service cell c with non-zero authorized transmit power is to be changed; reducing the transmitter output power of each carrier f of the service cell c with non-zero authorized transmit power according to the determined priority order by increasing the P-MPR of the carrier f of the service cell c; determining an electromagnetic power density exposure level; determining whether the electromagnetic power density exposure level is equal to or lower than a predetermined maximum permitted exposure (MPE) level; and if the electromagnetic power density exposure level is greater than the predetermined MPE level, returning to reducing the transmitter output power.

[0010] According to another aspect, a method of wireless communication using inter-band carrier aggregation at a user equipment (UE) may be described, comprising: determining a maximum user equipment (UE) output power (P UMAX ) value; determining a priority order for multiple types of uplink (UL) transmissions; assigning a priority value to each type of UL transmission according to the determined priority order; during a given type of UL transmission, reducing the transmitter output power associated with a given type of UL transmission by increasing the P-MPR according to the determined priority order; determining an electromagnetic power density exposure level; determining whether the electromagnetic power density exposure level is equal to or less than a predetermined maximum permissible exposure (MPE) level; and returning to reducing the transmitter output power if the electromagnetic power density exposure level is greater than the predetermined MPE level.

[0011] According to another example, an apparatus may include a method for determining a maximum user equipment (UE) output power (P UMAX ) value; a component for determining a priority order for multiple types of uplink (UL) transmissions; a component for assigning a priority value to each type of UL transmission according to the determined priority order; a component for reducing the transmitter output power associated with a given type of UL transmission by increasing the P-MPR according to the determined priority order during the given type of UL transmission; a component for determining an electromagnetic power density exposure level; a component for determining whether the electromagnetic power density exposure level is equal to or lower than a predetermined maximum permissible exposure (MPE) level; and a component for returning to reducing the transmitter output power if the electromagnetic power density exposure level is greater than the predetermined MPE level.

[0012] According to another example, a non-transitory computer-readable medium storing computer executable code is described, including code for causing a computer to perform the following operations: determining a value for reducing a measured configured maximum user equipment (UE) output power (PUMAX); determining a priority order for multiple types of uplink (UL) transmissions; assigning a priority value to each type of UL transmission according to the determined priority order; during a given type of UL transmission, reducing the transmitter output power associated with a given type of UL transmission by increasing the P-MPR according to the determined priority order; determining an electromagnetic power density exposure level; determining whether the electromagnetic power density exposure level is equal to or less than a predetermined maximum permissible exposure (MPE) level; and if the electromagnetic power density exposure level is greater than the predetermined MPE level, returning to reducing the transmitter output power.

[0013] According to yet another example, an apparatus for wireless communication may be described, including a processor, a transceiver communicatively coupled to the processor, and a memory communicatively coupled to the processor. According to this example, the processor may be configured to: determine a maximum user equipment (UE) output power (P UMAX ) value; determining a priority order for multiple types of uplink (UL) transmissions; assigning a priority value to each type of UL transmission according to the determined priority order; during a given type of UL transmission, reducing the transmitter output power associated with a given type of UL transmission by increasing the P-MPR according to the determined priority order; determining an electromagnetic power density exposure level; determining whether the electromagnetic power density exposure level is equal to or less than a predetermined maximum permissible exposure (MPE) level; and returning to reducing the transmitter output power if the electromagnetic power density exposure level is greater than the predetermined MPE level.

[0014] According to another aspect, a method for wireless communication using inter-band carrier aggregation at a user equipment (UE) may be described, comprising: determining a value for reducing a measured configured maximum user equipment (UE) output power (PUMAX); selecting a first UL channel from a first PUCCH group of PUCCHs having multiple PUCCH groups, and selecting a second UL channel from a second PUCCH group of PUCCHs having multiple PUCCH groups; determining whether a first service priority (S-pri) value of the first UL channel is higher than a second S-pri value of the second UL channel; giving a higher transmission priority to the UL channel with the highest S-pri value in the first UL channel or the second UL channel; reducing a transmitter output power associated with a higher priority UL channel by increasing a P-MPR associated with the higher priority UL channel; determining an electromagnetic power density exposure level; determining whether the electromagnetic power density exposure level is equal to or lower than a predetermined maximum allowed exposure (MPE) level; and returning to reducing the transmitter output power if the electromagnetic power density exposure level is greater than the predetermined MPE level.

[0015] According to another example, an apparatus may include a component for determining a value of a maximum user equipment (UE) output power (PUMAX) for reducing a measurement configuration; a component for selecting a first UL channel from a first PUCCH group of PUCCHs having multiple PUCCH groups and a second UL channel from a second PUCCH group of PUCCHs having multiple PUCCH groups; a component for determining whether a first service priority (S-pri) value of the first UL channel is higher than a second S-pri value of the second UL channel; a component for giving a higher transmission priority to the UL channel having the highest S-pri value in the first UL channel or the second UL channel; a component for reducing a transmitter output power associated with a higher priority UL channel by increasing a P-MPR associated with the higher priority UL channel; a component for determining an electromagnetic power density exposure level; a component for determining whether the electromagnetic power density exposure level is equal to or lower than a predetermined maximum permitted exposure (MPE) level; and a component for returning to reducing the transmitter output power if the electromagnetic power density exposure level is greater than a predetermined MPE level.

[0016] According to another example, a non-transitory computer-readable medium storing computer-executable code is described, including code for causing a computer to perform the following operations: determine a value for reducing a measured configured maximum user equipment (UE) output power (PUMAX); select a first UL channel from a first PUCCH group of PUCCHs having multiple PUCCH groups, and select a second UL channel from a second PUCCH group of PUCCHs having multiple PUCCH groups; determine whether a first service priority (S-pri) value of the first UL channel is higher than a second S-pri value of the second UL channel; give a higher transmission priority to the UL channel with the highest S-pri value in the first UL channel or the second UL channel; reduce the transmitter output power associated with the higher priority UL channel by increasing the P-MPR associated with the higher priority UL channel; determine an electromagnetic power density exposure level; determine whether the electromagnetic power density exposure level is equal to or lower than a predetermined maximum allowed exposure (MPE) level; and if the electromagnetic power density exposure level is greater than the predetermined MPE level, return to reducing the transmitter output power.

[0017] According to another example, an apparatus for wireless communication may be described, including a processor, a transceiver communicatively coupled to the processor, and a memory communicatively coupled to the processor. According to the example, the processor may be configured to: determine a value of a maximum user equipment (UE) output power (PUMAX) of a configuration that reduces the measurement; select a first UL channel from a first PUCCH group of PUCCHs having multiple PUCCH groups, and select a second UL channel from a second PUCCH group of PUCCHs having multiple PUCCH groups; determine whether a first service priority (S-pri) value of the first UL channel is higher than a second S-pri value of the second UL channel; give a higher transmission priority to the UL channel with the highest S-pri value in the first UL channel or the second UL channel; reduce the transmitter output power associated with the higher priority UL channel by increasing the P-MPR associated with the higher priority UL channel; determine an electromagnetic power density exposure level; determine whether the electromagnetic power density exposure level is equal to or lower than a predetermined maximum allowed exposure (MPE) level; and if the electromagnetic power density exposure level is greater than the predetermined MPE level, return to reducing the transmitter output power.

[0018] According to another aspect, a method for wireless communication using inter-band carrier aggregation at a user equipment (UE) may be described, comprising: determining a value for reducing a measured configured maximum user equipment (UE) output power (PUMAX); selecting a first UL channel from a first PUCCH group of PUCCHs having multiple PUCCH groups, and selecting a second UL channel from a second PUCCH group of PUCCHs having multiple PUCCH groups; determining whether a first channel priority (C-pri) value of the first UL channel is higher than a second C-pri value of the second UL channel; giving a higher transmission priority to the UL channel with the highest C-pri value in the first UL channel or the second UL channel; reducing the transmitter output power associated with the higher priority UL channel by increasing the P-MPR associated with the higher priority UL channel; determining an electromagnetic power density exposure level; determining whether the electromagnetic power density exposure level is equal to or lower than a predetermined maximum allowed exposure (MPE) level; and returning to reducing the transmitter output power if the electromagnetic power density exposure level is greater than the predetermined MPE level.

[0019] According to another example, an apparatus may include a method for determining a maximum user equipment (UE) output power (P UMAX ) value; a component for selecting a first UL channel from a first PUCCH group of PUCCHs having multiple PUCCH groups and selecting a second UL channel from a second PUCCH group of PUCCHs having multiple PUCCH groups; a component for determining whether a first channel priority (C-pri) value of the first UL channel is higher than a second C-pri value of the second UL channel; a component for giving a higher transmission priority to the UL channel with the highest C-pri value in the first UL channel or the second UL channel; a component for reducing the transmitter output power associated with the higher priority UL channel by increasing the P-MPR associated with the higher priority UL channel; a component for determining an electromagnetic power density exposure level; a component for determining whether the electromagnetic power density exposure level is equal to or lower than a predetermined maximum allowed exposure (MPE) level; and a component for returning to reducing the transmitter output power if the electromagnetic power density exposure level is greater than the predetermined MPE level.

[0020] According to another example, a non-transitory computer-readable medium storing computer-executable code is described, including code for causing a computer to perform the following operations: determining a value for reducing a measured configured maximum user equipment (UE) output power (PUMAX); selecting a first UL channel from a first PUCCH group of PUCCHs having multiple PUCCH groups, and selecting a second UL channel from a second PUCCH group of PUCCHs having multiple PUCCH groups; determining whether a first channel priority (C-pri) value of the first UL channel is higher than a second C-pri value of the second UL channel; giving a higher transmission priority to the UL channel with the highest C-pri value in the first UL channel or the second UL channel; reducing the transmitter output power associated with the higher priority UL channel by increasing the P-MPR associated with the higher priority UL channel; determining an electromagnetic power density exposure level; determining whether the electromagnetic power density exposure level is equal to or lower than a predetermined maximum allowed exposure (MPE) level; and if the electromagnetic power density exposure level is greater than the predetermined MPE level, returning to reducing the transmitter output power.

[0021] According to another example, an apparatus for wireless communication may be described, including a processor, a transceiver communicatively coupled to the processor, and a memory communicatively coupled to the processor. According to the example, the processor may be configured to: determine a value of a maximum user equipment (UE) output power (PUMAX) of a configuration that reduces the measurement; select a first UL channel from a first PUCCH group of PUCCHs having multiple PUCCH groups, and select a second UL channel from a second PUCCH group of PUCCHs having multiple PUCCH groups; determine whether a first channel priority (C-pri) value of the first UL channel is higher than a second C-pri value of the second UL channel; give a higher transmission priority to the UL channel with the highest C-pri value in the first UL channel or the second UL channel; reduce the transmitter output power associated with the higher priority UL channel by increasing the P-MPR associated with the higher priority UL channel; determine an electromagnetic power density exposure level; determine whether the electromagnetic power density exposure level is equal to or lower than a predetermined maximum allowed exposure (MPE) level; and if the electromagnetic power density exposure level is greater than the predetermined MPE level, return to reducing the transmitter output power.

[0022] By reading the following detailed description, these and other aspects of the present invention will be more fully understood. By reading the following description of specific exemplary embodiments in conjunction with the accompanying drawings, it will be clear to those of ordinary skill in the art that other aspects, features and embodiments. Although features can be discussed relative to certain embodiments and the accompanying drawings below, all embodiments can include one or more advantageous features discussed herein. In other words, although one or more embodiments can be discussed as having certain advantageous features, one or more such features can also be used according to the various embodiments discussed herein. Similarly, although exemplary embodiments can be discussed below as equipment, system or method embodiments, it should be understood that such exemplary embodiments can be implemented in various equipment, systems and methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of a wireless communication system according to some aspects.

[0024] Figure 2 is a conceptual illustration of an example of a radio access network in accordance with some aspects.

[0025] Figure 3 is a block diagram illustrating a wireless communication system supporting Multiple-Input Multiple-Output (MIMO) communication.

[0026] Figure 4 is a schematic diagram of organizing wireless resources in an air interface using orthogonal frequency division multiplexing (OFDM) according to some embodiments.

[0027] Figure 5 is a block diagram conceptually illustrating an example of a hardware implementation of a scheduling entity according to some aspects of the present disclosure.

[0028] Figure 6 is a block diagram conceptually illustrating an example of a hardware implementation of a scheduled entity according to some aspects of the present disclosure.

[0029] Fig. 7A and Figure 7B is a graphical representation of inter-band non-contiguous carrier aggregation 700 in accordance with some aspects of the present disclosure.

[0030] Figure 8 is a schematic diagram of a user equipment sending an uplink transmission to a scheduling entity according to some aspects of the present disclosure.

[0031] Fig. 9 is a flow chart illustrating an example method of wireless communication using inter-band carrier aggregation at a user equipment (UE) according to some aspects of the present disclosure.

[0032] Fig.10is a flow chart illustrating an example method of wireless communication using inter-band carrier aggregation at a user equipment (UE) according to some aspects of the present disclosure.

[0033] Fig.11 is a flow chart illustrating an example method of wireless communication using inter-band carrier aggregation at a user equipment (UE) according to some aspects of the present disclosure.

[0034] Fig.12 is a flow chart illustrating an example method of wireless communication using inter-band carrier aggregation at a user equipment (UE) according to some aspects of the present disclosure.

[0035] Fig.13 is a flow chart illustrating an example method of wireless communication using inter-band carrier aggregation at a user equipment (UE) according to some aspects of the present disclosure.

[0036] Fig.14 is a flow chart illustrating an example method of wireless communication using inter-band carrier aggregation at a user equipment (UE) according to some aspects of the present disclosure. DETAILED DESCRIPTION

[0037] In conjunction with the accompanying drawings, the detailed description set forth below is intended as a description of various configurations and is not intended to represent the only configuration in which the concepts described herein may be practiced. The detailed description includes specific details in order to provide a thorough understanding of the various concepts. However, it will be apparent to those skilled in the art that these concepts may be practiced without these specific details. In some cases, well-known structures and components are shown in block diagram form to avoid obscuring these concepts.

[0038] Although aspects and embodiments are described in this application by way of illustration of some examples, it will be understood by those skilled in the art that additional implementations and use cases may occur in many different arrangements and scenarios. The innovations described herein may be implemented across many different platform types, devices, systems, shapes, sizes, and packaging arrangements. For example, embodiments and / or uses may be implemented by integrated chip embodiments and other devices based on non-module components (e.g., end-user devices, vehicles, communication devices, computing devices, industrial devices, retail / purchasing devices, medical devices, AI-enabled devices, etc.). Although some examples may or may not be specifically targeted at use cases or applications, a variety of applicability of the described innovations may occur. Implementations may range from chip-level or modular components to non-modular, non-chip-level implementations, and further to aggregated, distributed, or OEM devices or systems that include one or more aspects of the innovation. In some practical settings, devices including the described aspects and features may also have to include additional components and features for implementing and practicing the claimed and described embodiments. For example, the transmission and reception of wireless signals must include multiple components for analog and digital purposes (e.g., hardware components including antennas, RF chains, power amplifiers, modulators, buffers, processors, interleavers, adders, etc.) The innovations described herein can be implemented in a variety of devices, chip-level components, systems, distributed arrangements, end-user devices, etc., of various sizes, shapes, and configurations.

[0039] The various concepts presented throughout this disclosure may be implemented across a variety of telecommunication systems, network architectures and communication standards. Figure 1 , various aspects of the present disclosure are described with reference to a wireless communication system 100 as a non-limiting illustrative example. The wireless communication system 100 includes three interacting domains: a core network 102, a radio access network (RAN) 104, and a user equipment (UE) 106. With the aid of the wireless communication system 100, the UE 106 can achieve data communication with an external data network 110 (such as but not limited to the Internet).

[0040] The RAN 104 may implement any suitable one or more wireless communication technologies to provide radio access to the UE 106. As an example, the RAN 104 may operate in accordance with the 3rd Generation Partnership Project (3GPP) New Radio (NR) specification, commonly referred to as 5G. As another example, the RAN 100 may operate under a mix of 5G NR and Evolved Universal Terrestrial Radio Access Network (eUTRAN) standards, commonly referred to as LTE. 3GPP refers to such a hybrid RAN as the Next Generation RAN, or NG-RAN. Of course, many other examples may be utilized within the scope of the present disclosure.

[0041] As shown, the RAN 104 includes a plurality of base stations 108. In a broad sense, a base station is a network element in a radio access network, responsible for radio transmission and reception to or from a UE in one or more cells. In different technologies, standards, or environments, a base station may be referred to by those skilled in the art as a base transceiver station (BTS), a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS), an extended service set (ESS), an access point (AP), a node B (NB), an eNode B (eNB), a gNode B (gNB), or some other suitable terms.

[0042] The radio access network 104 is further shown as supporting wireless communications for multiple mobile devices. In the 3GPP standard, a mobile device may be referred to as a user equipment (UE), but may also be referred to as a mobile station (MS), a user station, a mobile unit, a user unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile user station, an access terminal (AT), a mobile terminal, a wireless terminal, a remote terminal, a handset, a terminal, a user agent, a mobile client, a client, or some other suitable terminology by those skilled in the art. A UE may be a device (e.g., a mobile device) that provides network service access to a user.

[0043] In this document, a "mobile" device does not necessarily need to have the ability to move and can be stationary. The term mobile device or mobile device refers to a variety of devices and technologies. A UE may include multiple hardware structural components whose size, shape, and arrangement facilitate communication; these components may include antennas, antenna arrays, RF chains, amplifiers, one or more processors, etc. that are electrically coupled to each other. For example, some non-limiting examples of mobile devices include mobile phones, cellular phones, smart phones, session initiation protocol (SIP) phones, laptops, personal computers (PCs), notebook computers, netbooks, smartbooks, tablet computers, personal digital assistants (PDAs), and various embedded systems, such as corresponding to the "Internet of Things" (IoT). A mobile device may also be a car or other means of transportation, a remote sensor or actuator, a robot or robotic device, a satellite radio, a global positioning system (GPS) device, an object tracking device, a drone, a multi-rotor helicopter, a quadcopter, a remote control device, a consumer and / or wearable device, such as glasses, a wearable camera, a virtual reality device, a smart watch, a health or fitness tracker, a digital audio player (e.g., an MP3 player), a camera, a game console, etc. The mobile device may also be a digital home or smart home device, such as home audio, video and / or multimedia equipment, appliances, vending machines, smart lighting, home security systems, smart meters, etc. The mobile device may also be a smart energy device, a security device, a solar panel or solar array, municipal infrastructure equipment that controls power (e.g., smart grid), lighting, water, etc., industrial automation and enterprise equipment, logistics controllers, agricultural equipment, military defense equipment, vehicles, aircraft, ships and weapons, etc. In addition, the mobile device may provide networked medical or telemedicine support, i.e., remote health care. Telehealth devices may include remote health monitoring devices and remote health management devices, whose communications may be given priority treatment or priority access over other types of information, for example, in terms of priority access to critical service data transmission and / or the associated QoS for critical service data transmission.

[0044] Wireless communication between RAN 104 and UE 106 can be described as utilizing an air interface. Transmissions from a base station (e.g., base station 108) to one or more UEs (e.g., UE 106) over an air interface can be referred to as downlink (DL) transmissions. According to certain aspects of the present disclosure, the term downlink can refer to point-to-multipoint transmissions initiated at a scheduling entity (further described below; e.g., base station 108). Another way to describe the scheme can be to use the term broadcast channel multiplexing. Transmissions from a UE (e.g., UE 106) to a base station (e.g., base station 108) can be referred to as uplink (UL) transmissions. According to other aspects of the present disclosure, the term uplink can refer to point-to-point transmissions initiated at a scheduled entity (further described below; e.g., UE 106).

[0045] In some examples, access to the air interface may be scheduled, wherein a scheduling entity (e.g., a base station 108) allocates resources for communications between some or all devices and equipment within its service area or cell. In the present disclosure, as discussed further below, a scheduling entity may be responsible for scheduling, allocating, reconfiguring, and releasing resources for one or more scheduled entities. That is, for scheduled communications, a UE 106 (which may be a scheduled entity) may utilize resources allocated by the scheduling entity 108.

[0046] Base station 108 is not the only entity that can act as a scheduling entity. That is, in some examples, a UE can act as a scheduling entity to schedule resources for one or more scheduled entities (e.g., one or more other UEs).

[0047] like Figure 1 As shown, the scheduling entity 108 can broadcast downlink traffic 112 to one or more scheduled entities 106. In a broad sense, the scheduling entity 108 is a node or device responsible for scheduling traffic in the wireless communication network, including downlink traffic 112 and, in some examples, uplink traffic 116 from one or more scheduled entities 106 to the scheduling entity 108. On the other hand, the scheduled entity 106 is a node or device that receives downlink control information 114, which includes but is not limited to scheduling information (e.g., grants), synchronization or timing information, or other control information from another entity in the wireless communication network (such as the scheduling entity 108).

[0048] Typically, the base stations 108 may include a backhaul interface for communicating with a backhaul portion 120 of the wireless communication system. The backhaul 120 may provide a link between the base stations 108 and the core network 102. Additionally, in some examples, the backhaul network may provide interconnections between the various base stations 108. Various types of backhaul interfaces may be used, such as a direct physical connection using any suitable transport network, a virtual network, etc.

[0049] The core network 102 may be part of the wireless communication system 100 and may be independent of the radio access technology used in the RAN 104. In some examples, the core network 102 may be configured according to a 5G standard (e.g., 5GC). In other examples, the core network 102 may be configured according to a 4G Evolved Packet Core (EPC) or any other suitable standard or configuration.

[0050] Reference now Figure 2 , a schematic diagram of RAN 200 is provided as an example and not a limitation. In some examples, RAN 200 may be similar to the one described above. Figure 1The geographic area covered by the RAN 200 may be divided into cellular regions (cells) that may be uniquely identified by a user equipment (UE) based on an identity broadcast from an access point or base station. Figure 2 Macro cells 202, 204, and 206 and small cells 208 are shown, each of which may include one or more sectors (not shown). A sector is a sub-area of ​​a cell. All sectors within a cell are served by the same base station. A radio link within a sector may be identified by a single logical identifier belonging to the sector. In a cell divided into multiple sectors, multiple sectors within a cell may be formed by antenna groups, each antenna being responsible for communicating with a UE in a portion of the cell.

[0051] exist Figure 2 , two base stations 210 and 212 are shown in cells 202 and 204; and a third base station 214 is shown as controlling a remote radio head (RRH) 216 in cell 206. That is, the base station may have an integrated antenna, or may be connected to an antenna or RRH by a feeder cable. In the example shown, cells 202, 204, and 126 may be referred to as macro cells because base stations 210, 212, and 214 support cells with large sizes. In addition, a base station 218 is shown in a small cell 208 (e.g., a micro cell, a micro cell, a femto cell, a home base station, a home node B, a home eNode B, etc.), which may overlap with one or more macro cells. In this example, cell 208 may be referred to as a small cell because base station 218 supports a cell with a relatively small size. The cell size may be determined based on system design and component constraints.

[0052] It should be understood that the radio access network 200 may include any number of wireless base stations and cells. In addition, relay nodes may be deployed to extend the size or coverage area of ​​a given cell. Base stations 210, 212, 214, 218 provide wireless access points to the core network for any number of mobile devices. In some examples, base stations 210, 212, 214, and / or 218 may be similar to those described above and described in detail in the accompanying drawings. Figure 1 The base station / scheduling entity 108 shown in FIG.

[0053] Figure 2 Also included is a quadcopter or drone 220 that can be configured to act as a base station. That is, in some examples, the cell is not necessarily stationary, and the geographic area of ​​the cell can move depending on the location of a mobile base station such as a quadcopter 220.

[0054] Within the RAN 200, cells may include UEs that may communicate with one or more sectors of each cell. In addition, each base station 210, 212, 214, 218, and 220 may be configured to provide access to the core network 102 (see FIG. 1 ) for all UEs in the respective cells. Figure 1 ) access point. For example, UEs 222 and 224 may communicate with base station 210; UEs 226 and 228 may communicate with base station 212; UEs 230 and 232 may communicate with base station 214 via RRH 216; UE 234 may communicate with base station 218; and UE 236 may communicate with mobile base station 220. In some examples, UEs 222, 224, 226, 228, 230, 232, 234, 236, 238, 240, and / or 242 may communicate with the base stations described above and in Figure 1 The UE / scheduled entity 106 shown in FIG. 1 is the same as that shown in FIG.

[0055] In some examples, a mobile network node (eg, quadcopter 220) may be configured to act as a UE. For example, quadcopter 220 may operate within cell 202 by communicating with base station 210.

[0056] On the other hand of RAN 200, side link signals can be used between UEs without having to rely on scheduling or control information from a base station. For example, two or more UEs (e.g., UE 226 and 228) can use side link signals 227 to communicate with each other without relaying the communication through a base station (e.g., base station 212). In another example, UE 238 is shown to communicate with UE 240 and 242. Here, UE 238 can be used as a scheduling entity or a primary side link device, and UE 240 and 242 can be used as a scheduled entity or a non-primary (e.g., auxiliary) side link device. In general, a UE can act as a scheduling entity or a scheduled entity of a side link network, such as a device to device (D2D), a peer-to-peer (P2P), a vehicle to vehicle (V2V) network, a vehicle to everything (V2X) network, a mesh network, and / or other suitable side link network configurations. In the mesh network example, in addition to communicating with the scheduling entity 238, UE 240 and 242 can optionally communicate directly with each other.

[0057] In the radio access network 200, the ability of a UE to communicate independently of its location while moving is called mobility. The various physical channels between the UE and the radio access network are usually managed by an access and mobility management function (AMF, not shown). Figure 1The function may include a security context management function (SCMF) that manages the security environment of control plane and user plane functions, and a security anchor function (SEAF) that performs authentication.

[0058] In various aspects of the present disclosure, the radio access network 200 can utilize DL-based mobility or UL-based mobility to implement mobility and handover (i.e., transferring the UE's connection from one radio channel to another). In a network configured for DL-based mobility, during a call with a scheduling entity, or at any other time, the UE can monitor various parameters of the signal from its serving cell and various parameters of neighboring cells. Based on the quality of these parameters, the UE can maintain communication with one or more of the neighboring cells. During this period, if the UE moves from one cell to another, or if the signal quality from the neighboring cell exceeds the signal quality from the serving cell for a given amount of time, the UE can perform a handover or handover from the serving cell to the neighboring (target) cell. For example, a UE 224 (illustrated as a vehicle, but any suitable form of UE can be used) can move from a geographic area corresponding to its serving cell 202 to a geographic area corresponding to a neighboring cell 206. When the signal strength or quality from the neighboring cell 206 exceeds the signal strength or quality of its serving cell 202 for a given amount of time, the UE 224 can send a report message indicating this situation to its serving base station 210. In response, UE 224 may receive a handover command, and the UE may undergo a handover to cell 206 .

[0059] In a network configured for UL-based mobility, the UL reference signal from each UE can be used by the network to select a serving cell for each UE. In some examples, base stations 210, 212, and 214 / 216 can broadcast a unified synchronization signal (e.g., a unified primary synchronization signal (PSS), a unified secondary synchronization signal (SSS), and a unified physical broadcast channel (PBCH)). UE222, 224, 226, 228, 230, and 232 can receive the unified synchronization signal, derive the carrier frequency and time slot timing from the synchronization signal, and send an uplink pilot or reference signal in response to the derived timing. The uplink pilot signal sent by a UE (e.g., UE 224) can be received simultaneously by two or more cells (e.g., base stations 210 and 214 / 216) within the radio access network 200. Each cell can measure the strength of the pilot signal, and the radio access network (e.g., one or more of base stations 210 and 214 / 216 and / or a central node in the core network) can determine the serving cell of UE 224. As UE 124 moves through radio access network 200, the network may continue to monitor uplink pilot signals sent by UE 224. When the signal strength or quality of the pilot signal measured by the neighboring cell exceeds the signal strength or quality measured by the serving cell, network 200 may handover UE 224 from the serving cell to the neighboring cell, with or without notifying UE 224.

[0060] Although the synchronization signals transmitted by base stations 210, 212 and 214 / 216 may be uniform, the synchronization signals may not identify a specific cell, but may identify a region of multiple cells operating at the same frequency and / or the same timing. The use of regions in a 5G network or other next generation communication network implements an uplink-based mobility framework and improves the efficiency of the UE and the network because the number of mobility messages that need to be exchanged between the UE and the network can be reduced.

[0061] The air interface in the radio access network 200 can utilize one or more duplex algorithms. Duplex refers to a point-to-point communication link in which two endpoints can communicate with each other bidirectionally. Full-duplex means that two endpoints can communicate with each other at the same time. Half-duplex means that only one endpoint can send information to the other endpoint at a time. In a wireless link, a full-duplex channel usually relies on the physical isolation of the transmitter and the receiver, as well as suitable interference elimination techniques. Full-duplex simulation is usually used for wireless links by utilizing frequency division duplex (FDD) or time division duplex (TDD). In FDD, transmissions in different directions run at different carrier frequencies. In TDD, time division multiplexing is used to separate transmissions in different directions on a given channel. That is, at some times, the channel is dedicated to transmissions in one direction, and at other times, the channel is dedicated to transmissions in another direction, where the direction can change very quickly, such as several times per time slot.

[0062] The air interface in the radio access network 200 can utilize one or more multiplexing and multiple access algorithms to enable simultaneous communication of various devices. For example, the 5G NR specification provides multiple access for UL transmissions from UEs 222 and 224 to the base station 210, and utilizes orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) to multiplex DL transmissions from the base station 210 to one or more UEs 222 and 224. In addition, for UL transmissions, the 5G NR specification provides support for discrete Fourier transform-spread spectrum-OFDM (DFT-s-OFDM) through CP (also known as single carrier FDMA (SC-FDMA)). However, within the scope of the present disclosure, multiplexing and multiple access are not limited to the above schemes and can be provided using time division multiple access (TDMA), code division multiple access (CDMA), frequency division multiple access (FDMA), sparse code multiple access (SCMA), resource extension multiple access (RSMA) or other suitable multiple access schemes. In addition, multiplexed DL transmissions from base station 210 to UEs 222 and 224 may be provided using time division multiplexing (TDM), code division multiplexing (CDM), frequency division multiplexing (FDM), orthogonal frequency division multiplexing (OFDM), sparse code multiplexing (SCM), or other suitable multiplexing schemes.

[0063] In some aspects of the present disclosure, the scheduling entity and / or the scheduled entity may be configured for beamforming and / or multiple-input multiple-output (MIMO) techniques. Figure 3 An example of a wireless communication system 300 supporting MIMO is shown. In a MIMO system, a transmitter 302 includes multiple transmit antennas 304 (e.g., N transmit antennas) and a receiver 306 includes multiple receive antennas 308 (e.g., M receive antennas). Therefore, there are N×M signal paths 310 from the transmit antennas 304 to the receive antennas 308. Each of the transmitter 302 and the receiver 306 can be implemented in, for example, the scheduling entity 108, the scheduled entity 106, or any other suitable wireless communication device.

[0064] The use of this multi-antenna technology enables wireless communication systems to exploit the spatial domain to support spatial multiplexing, beamforming, and transmit diversity. Spatial multiplexing can be used to send different data streams, also called layers, simultaneously on the same time-frequency resources. Data streams can be sent to a single UE to increase the data rate, or to multiple UEs to increase the overall system capacity, the latter of which is called multi-user MIMO (MU-MIMO). This is achieved by spatially precoding each data stream (i.e., multiplying the data stream by different weights and phase shifts) and then sending each spatially precoded stream through multiple transmit antennas on the downlink. The spatially precoded data streams arrive at the UE with different spatial signatures, which enables each UE to recover one or more data streams destined for that UE. On the uplink, each UE sends a spatially precoded data stream, which enables the base station to identify the source of each spatially precoded data stream.

[0065] The number of data streams or layers corresponds to the transmission rank. In general, the rank of the MIMO system 300 is limited to the smaller of the number of transmit or receive antennas 304 or 308. In addition, the channel conditions at the UE and other considerations (such as the available resources at the base station) may also affect the transmission rank. For example, the rank (and the number of data streams) assigned to a particular UE on the downlink can be determined based on a rank indicator (RI) sent from the UE to the base station. The RI can be determined based on the antenna configuration (e.g., the number of transmit and receive antennas) and the signal-to-noise-interference ratio (SINR) measured on each receive antenna. The RI can indicate, for example, the number of layers that can be supported under current channel conditions. The base station can use the RI as well as resource information (e.g., available resources and the amount of data to be scheduled for the UE) to assign a transmission rank to the UE.

[0066] In a time division duplex (TDD) system, UL and DL are reciprocal because they each use different time slots of the same frequency bandwidth. Therefore, in a TDD system, the base station can assign a rank for DL ​​MIMO transmission based on UL SINR measurements (e.g., based on a sounding reference signal (SRS) or other pilot signal sent from the UE). Based on the assigned rank, the base station can then send a channel state information-reference signal (CSI-RS) with a separate C-RS sequence for each layer to provide multi-layer channel estimation. Based on the CSI-RS, the UE can measure the channel quality across layers and resource blocks, and feed back the CQI and RI values ​​to the base station for updating the rank and allocating REs for future downlink transmissions.

[0067] In the simplest case, Figure 3As shown, rank 2 spatial multiplexing on a 2x2 MIMO antenna configuration will transmit one data stream from each transmit antenna 304. Each data stream follows a different signal path 310 to each receive antenna 308. The receiver 306 can then use the received signal from each receive antenna 308 to reconstruct the data stream.

[0068] Reference Figure 4 Various aspects of the present disclosure are described with reference to the OFDM waveform schematically shown in FIG. It will be appreciated by those skilled in the art that various aspects of the present disclosure may be applied to DFT-s-OFDMA waveforms in substantially the same manner as described below. That is, although some examples of the present disclosure may be directed to OFDM links for clarity, it will be appreciated that the same principles may also be applied to DFT-s-OFDMA waveforms.

[0069] In this disclosure, a frame refers to a duration of 10 ms for wireless transmission, each frame includes 10 subframes, each subframe is 1 ms. On a given carrier, there may be one set of frames in the UL and another set of frames in the DL. Now refer to Figure 4 , shows an enlarged view of an exemplary DL subframe 402, which shows an OFDM resource grid 404. However, as will be readily appreciated by those skilled in the art, the PHY transmission structure for any particular application may differ from the examples described herein, depending on many factors. Here, time is in the horizontal direction, in units of OFDM symbols; frequency is in the vertical direction, in units of subcarriers or sound signals.

[0070] Resource grid 404 can be used to schematically represent the time-frequency resources of a given antenna port. That is, in a MIMO implementation with multiple available antenna ports, corresponding multiple resource grids 404 can be used for communication. Resource grid 404 is divided into multiple resource elements (REs) 406. RE (which is 1 subcarrier × 1 symbol) is the smallest discrete part of the time-frequency grid, containing a single complex value representing physical channel or signal data. Depending on the modulation used in a specific implementation, each RE can represent one or more information bits. In some examples, a block of REs can be referred to as a physical resource block (PRB) or more simply a resource block (RB) 408, which contains any suitable number of consecutive subcarriers in the frequency domain. In one example, an RB can include 12 subcarriers, which number is independent of the parameter set used. In some examples, depending on the parameter set, an RB can include any suitable number of consecutive OFDM symbols in the time domain. In the present disclosure, it is assumed that a single RB such as RB 408 corresponds entirely to a single communication direction (sending to or receiving from a given device).

[0071] A UE typically utilizes only a subset of the resource grid 404. An RB may be the smallest resource unit that can be allocated to a UE. Thus, the more RBs scheduled for a UE, the higher the modulation scheme selected for the air interface, and the higher the data rate for the UE.

[0072] In this illustration, RB 408 is shown as occupying less than the entire bandwidth of subframe 402, with some subcarriers shown above and below RB 408. In a given implementation, subframe 402 may have a bandwidth corresponding to any number of one or more RBs 408. Furthermore, in this illustration, RB 408 is shown as occupying less than the entire duration of subframe 402, but this is merely one possible example.

[0073] Each subframe 402 (eg, a 1 ms subframe) may be composed of one or more adjacent time slots. Figure 4 In the example shown, as an illustrative example, a subframe 402 includes four time slots 410. In some examples, time slots can be defined according to a specified number of OFDM symbols with a given cyclic prefix (CP) length. For example, a time slot may include OFDM7 or 14 symbols with a nominal CP. Other examples may include mini-slots with shorter durations (e.g., 1, 2, 4, or 7 OFDM symbols). In some cases, these mini-slots may be sent by occupying resources scheduled for ongoing time slot transmissions of the same or different UEs.

[0074] The enlarged view of one of the time slots 410 shows the time slot 410 including a control region 412 and a data region 414. In general, the control region 412 may carry a control channel (e.g., PDCCH) and the data region 414 may carry a data channel (e.g., PDSCH or PUSCH). Of course, a time slot may contain all DL, all UL, or at least one DL portion and at least one UL portion. Figure 4 The simple structure shown is merely exemplary in nature, and different slot structures may be utilized and may include one or more of each of the control region(s) and data region(s).

[0075] although Figure 4 Although not shown in the figure, each RE 406 within the RB 408 can be scheduled to carry one or more physical channels, including control channels, shared channels, data channels, etc. Other REs 406 within the RB 408 can also carry pilot or reference signals. These pilot or reference signals can provide a receiving device with a channel estimation for performing the corresponding channel, which can achieve coherent demodulation / detection of the control and / or data channels within the RB 408.

[0076] In a DL transmission, a transmitting device (e.g., a scheduling entity 108) may allocate one or more REs 406 (e.g., within a control region 412) to carry DL control information 114 including one or more DL control channels, which typically carry information originating from higher layers, such as a physical broadcast channel (PBCH), a physical downlink control channel (PDCCH), etc. to one or more scheduled entities 106. In addition, DL REs may be allocated to carry DL physical signals, which typically do not carry information originating from higher layers. These DL physical signals may include a primary synchronization signal (PSS); a secondary synchronization signal (SSS); a demodulation reference signal (DM-RS); a phase tracking reference signal (PT-RS); a channel state information reference signal (CSI-RS), etc.

[0077] The synchronization signals PSS and SSS (collectively referred to as SS), and in some examples the PBCH, may be sent in an SS block comprising 4 consecutive OFDM symbols, the OFDM symbols being numbered in ascending order from 0 to 3 by time index. In the frequency domain, the SS block may extend over 240 consecutive subcarriers, the subcarriers being numbered in ascending order from 0 to 239 by frequency index. Of course, the present disclosure is not limited to this particular SS block configuration. Other non-limiting examples within the scope of the present disclosure may utilize more or less than two synchronization signals; may include one or more supplemental channels in addition to the PBCH; may omit the PBCH; and / or may use non-contiguous symbols for the SS block.

[0078] The PDCCH may carry downlink control information (DCI) for one or more UEs in the cell. This may include, but is not limited to, power control commands, scheduling information, grants, and / or RE allocations for DL ​​and UL transmissions.

[0079] In UL transmission, a transmitting device (e.g., scheduled entity 106) may utilize one or more REs 406 to carry UL control information 118 (UCI). The UCI may be generated from higher layers to the scheduling entity 108 via one or more UL control channels, such as a physical uplink control channel (PUCCH), a physical random access channel (PRACH), etc. In addition, the UL REs may carry UL physical signals that typically do not carry information originating from higher layers, such as a demodulation reference signal (DM-RS), a phase tracking reference signal (PT-RS), a sounding reference signal (SRS), etc. In some examples, the control information 118 may include a scheduling request (SR), i.e., a request to the scheduling entity 108 to schedule an uplink transmission. Here, in response to the SR sent on the control channel 118, the scheduling entity 108 may send downlink control information 114, which may schedule resources for uplink packet transmission.

[0080] The UL control information may also include hybrid automatic repeat request (HARQ) feedback (such as an acknowledgement (ACK) or a negative acknowledgement (NACK)), channel state information (CSI), or any other suitable UL control information. HARQ is a technology well known to those of ordinary skill in the art, in which the integrity of packet transmissions may be checked on the receiving side to ensure accuracy, for example, using any suitable integrity check mechanism, such as a checksum or a cyclic redundancy check (CRC). If the integrity of the transmission is confirmed, an ACK may be sent, and if it is not confirmed, a NACK may be sent. In response to the NACK, the transmitting device may send a HARQ retransmission, which may implement append combining, incremental redundancy, etc.

[0081] In addition to control information, one or more REs 406 may be allocated for user data or traffic data (e.g., within data region 414). Such traffic may be carried on one or more traffic channels, such as a physical downlink shared channel (PDSCH) for DL ​​transmissions or a physical uplink shared channel (PUSCH) for UL transmissions.

[0082] In order for the UE to obtain initial access to a cell, the RAN may provide system information (SI) that characterizes the cell. The system information may be provided using minimum system information (MSI) and other system information (OSI). MSI may be broadcast periodically on the cell to provide the most basic information required for initial cell access and is used to obtain any OSI that may be broadcast periodically or sent on demand. In some examples, MSI may be provided on two different downlink channels. For example, the PBCH may carry a master information block (MIB) and the PDSCH may carry a system information block type 1 (SIB1). In the art, SIB1 may be referred to as remaining minimum system information (RMSI).

[0083] The OSI may include any SI not broadcast in the MSI. In some examples, the PDSCH may carry multiple SIBs, not limited to SIB1 discussed above. Here, the OSI may be provided in these SIBs, such as SIB2 and described above.

[0084] Described above and in Figure 1 and Figure 4 The channels or carriers shown in are not necessarily all channels or carriers that may be used between the scheduling entity 108 and the scheduled entity 106, and one of ordinary skill in the art will recognize that other channels or carriers may be used in addition to those shown, such as other traffic, control, and feedback channels.

[0085] These physical channels are typically multiplexed and mapped to transport channels for processing at the medium access control (MAC) layer. Transport channels carry information blocks called transport blocks (TBs). Based on the modulation and coding scheme (MCS) and the number of RBs in a given transmission, the transport block size (TBS), which may correspond to the number of information bits, may be a controlled parameter.

[0086] Figure 5 5 is a block diagram illustrating an example of a hardware implementation of a scheduling entity 500 employing a processing system 514. For example, the scheduling entity 500 may be such as Figure 1 , 2 , 3 and / or 8. In another example, the scheduling entity 500 may be a base station (e.g., a network access node, an eNB or a gNB), such as Figure 1 , 2 , 3 and / or 8 as shown in any one or more.

[0087] The scheduling entity 500 may be implemented with a processing system 514 including one or more processors 504. Examples of processors 504 include microprocessors, microcontrollers, digital signal processors (DSPs), field programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functions described throughout the present disclosure. In various examples, the scheduling entity 500 may be configured to perform any one or more of the functions described herein. That is, the processors 504 used in the scheduling entity 500 may be used to implement the functions described below and, for example, in Figure 9-14 Any one or more of the processes shown in .

[0088] In this example, the processing system 514 can be implemented with a bus architecture, generally represented by bus 502. Depending on the specific application and overall design constraints of the processing system 514, the bus 502 may include any number of interconnecting buses and bridges. The bus 502 communicatively couples various circuits together, including one or more processors (generally represented by processor 504), memory 505, and computer-readable media (generally represented by computer-readable media 506). The bus 502 may also link various other circuits, such as timing sources, peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described. The bus interface 508 provides an interface between the bus 502 and the transceiver 510. The transceiver 510 provides a communication interface or component for communicating with various other devices via a transmission medium. Depending on the nature of the device, a user interface 512 (e.g., keyboard, display, speaker, microphone, joystick) may also be provided. Of course, such a user interface 512 is optional and may be omitted in some examples, such as a base station.

[0089] In some aspects of the present disclosure, processor 504 may include configuring a maximum UE output power (P UMAX ) determination and measurement circuit 540, which is configured for various functions, including, for example, determining a maximum user equipment (UE) output power (P UMAX ) value. For example, the configured maximum UE output power (P UMAX ) The determination and measurement circuit 540 may be configured to implement the following Fig. 9 (including, for example, block 902), Fig.10 (including, for example, block 1002), Fig.11 (including, for example, block 1102), Fig.12 (including, for example, block 1202), Fig.13 (including, e.g., block 1302) and Fig.14 (including, for example, block 1402) one or more of the functions described.

[0090] In some aspects of the present disclosure, the processor 504 may include a priority determination power management maximum power reduction (P-MPR) circuit 542 configured for various functions, including, for example, determining a priority order in which to change the power management maximum power reduction (P-MPR) value of each component carrier f of the serving cell c with a non-zero authorized transmit power. For example, the priority determination power management maximum power reduction (P-MPR) circuit 542 may be configured to implement the following with respect to Fig. 9 (including, for example, block 904), Fig.10 (including, for example, block 1004), Fig.11 (including, for example, block 1106), Fig.12 (including, for example, block 1206), Fig.13 (including, for example, block 1306) and Fig.14 (including, for example, block 1406) one or more of the functions described.

[0091] In some aspects of the present disclosure, the processor 504 may include a transmitter output power circuit 544 configured for various functions, including, for example, reducing the transmitter output power of each carrier f of the serving cell c having a non-zero authorized transmit power by increasing the P-MPR of the carrier f of the serving cell c according to the determined priority order. For example, the transmitter output power circuit 544 may be configured to implement the following regarding Fig. 9 (including, for example, block 906), Fig.10 (including, for example, block 1008), Fig.11 (including, for example, block 1112) and Fig.12 (including, for example, block 1212) one or more of the functions described.

[0092] In some aspects of the present disclosure, the processor 504 may include an electromagnetic power density exposure and MPE circuit 546 configured for various functions, including, for example, determining an electromagnetic power density exposure level at the scheduling entity 500 (e.g., UE), and determining whether the electromagnetic power density exposure level is equal to or below a predetermined maximum allowed exposure (MPE) level. For example, the electromagnetic power density exposure and MPE circuit 546 may be configured to implement the following with respect to Fig. 9 (including, for example, blocks 908 and 910), Fig.10 (including, for example, blocks 1010 and 1012), Fig.11 (including, for example, blocks 1114 and 1116) and Fig.12 (including, for example, blocks 1214 and 1216) one or more of the functions described.

[0093] Processor 504 is responsible for managing bus 502 and general processing, including executing software stored on computer-readable medium 506. When executed by processor 504, the software causes processing system 514 to perform the various functions described below for any particular device. Computer-readable medium 506 and memory 505 may also be used to store data that is manipulated by processor 504 when executing software.

[0094] One or more processors 504 in the processing system can execute software. Software should be broadly interpreted as instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable programs, execution threads, processes, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language or other. Software can reside on a computer-readable medium 506. The computer-readable medium 506 can be a non-transitory computer-readable medium. As an example, a non-transitory computer-readable medium includes a magnetic storage device (e.g., a hard disk, a floppy disk, a magnetic strip), an optical disk (e.g., a compact disk (CD) or a digital versatile disk (DVD)), a smart card, a flash memory device (e.g., a card, a stick or a key drive), a random access memory (RAM), a read-only memory (ROM), a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), a register, a removable disk, and any other suitable medium for storing software and / or instructions that can be accessed and read by a computer. Computer readable medium 506 may reside in processing system 514, external to processing system 514, or distributed across multiple entities including processing system 514. Computer readable medium 506 may be included in a computer program product. As an example, a computer program product may include a computer readable medium in packaging materials. Those skilled in the art will recognize how to best implement the described functionality presented throughout this disclosure based on the specific application and the overall design constraints of the entire system.

[0095] In one or more examples, the computer-readable storage medium 506 may include a configured maximum UE output power (P UMAX ) determination and measurement software, the software being configured for various functions, including, for example, determining a maximum user equipment (UE) output power (P UMAX For example, the configured maximum UE output power (P UMAX ) determination and measurement software can be configured to implement the above Fig. 9 (including, for example, block 902), Fig.10 (including, for example, block 1002), Fig.11 (including, for example, block 1102) and Fig.12 (including, for example, block 1202) one or more of the functions described.

[0096] In one or more examples, the computer-readable storage medium 506 may include a priority power management maximum power reduction (P-MPR) software configured for various functions, including, for example, determining a priority order in which to change a power management maximum power reduction (P-MPR) value for each component carrier f of a serving cell c having a non-zero authorized transmit power. For example, the priority power management maximum power reduction (P-MPR) software may be configured to implement the following regarding Fig. 9 (including, for example, block 904), Fig.10 (including, for example, block 1004), Fig.11 (including, for example, block 1104) and Fig.12 (including, for example, block 1204) one or more of the functions described.

[0097] In one or more examples, the computer-readable storage medium 506 may include transmitter output power software configured for various functions, including, for example, reducing the transmitter output power of each carrier f of the serving cell c having a non-zero authorized transmit power according to the determined priority order by increasing the P-MPR of the carrier f of the serving cell c. For example, the transmitter output power software may be configured to implement the following regarding Fig. 9 (including, for example, block 906), Fig.10 (including, for example, block 1008), Fig.11 (including, for example, block 1112) and Fig.12 (including, for example, block 1212) one or more of the functions described.

[0098] In one or more examples, the computer-readable storage medium 506 may include electromagnetic power density exposure and MPE software configured for various functions, including, for example, determining an electromagnetic power density exposure level at the scheduling entity 500 (e.g., UE), and determining whether the electromagnetic power density exposure level is equal to or below a predetermined maximum allowed exposure (MPE) level. For example, the electromagnetic power density exposure and MPE software may be configured to implement the following regarding Fig. 9 (including, for example, blocks 908 and 910), Fig.10 (including, for example, blocks 1010 and 1012), Fig.11 (including, for example, blocks 1114 and 1116) and Fig.12 (including, for example, blocks 1214 and 1216) one or more of the functions described.

[0099] Figure 6614 is a conceptual diagram illustrating an example of a hardware implementation of an exemplary scheduled entity 600 using a processing system 614. According to various aspects of the present disclosure, an element or any portion of an element or any combination of elements may be implemented using a processing system 614 including one or more processors 604. For example, the scheduled entity 600 may be such as Figure 1 , 2 , 3 and / or 8, any one or more of the user equipment (UE) shown.

[0100] The processing system 614 can be used with Figure 5 The processing system 514 shown is substantially the same, including a bus interface 608, a bus 602, a memory 605, a processor 604, and a computer readable medium 606. In addition, the scheduled entity 600 may include a substantially similar Figure 5 That is, the processor 604 used in the scheduled entity 600 can be used to implement the following description and, for example, Figure 9-14 Any one or more of the processes shown in .

[0101] In some aspects of the present disclosure, processor 604 may include configuring a maximum UE output power (P UMAX ) determination and measurement circuit 640, which is configured for various functions, including, for example, determining a maximum user equipment (UE) output power (P UMAX ) value. For example, the configured maximum UE output power (P UMAX ) The determination and measurement circuit 640 may be configured to implement the following Fig. 9 (including, for example, block 902), Fig.10 (including, for example, block 1002), Fig.11 (including, for example, block 1102), Fig.12 (including, for example, block 1202), Fig.13 (including, e.g., block 1302) and Fig.14 (including, for example, block 1402) one or more of the functions described.

[0102] In some aspects of the present disclosure, the processor 604 may include a priority determination power management maximum power reduction (P-MPR) circuit 642 configured for various functions, including, for example, determining a priority order in which to change the power management maximum power reduction (P-MPR) value of each component carrier f of the serving cell c with a non-zero authorized transmit power. For example, the priority determination power management maximum power reduction (P-MPR) circuit 642 may be configured to implement the following regarding Fig. 9 (including, for example, block 904), Fig.10 (including, for example, block 1004), Fig.11(including, for example, block 1104), Fig.12 (including, for example, block 1204), Fig.13 (including, for example, block 1306) and Fig.14 (including, for example, block 1406) one or more of the functions described.

[0103] In some aspects of the present disclosure, the processor 604 may include a transmitter output power circuit 644 configured for various functions, including reducing the transmitter output power of each carrier f of the serving cell c having a non-zero authorized transmit power according to the determined priority order, for example, by increasing the P-MPR of the carrier f of the serving cell c. For example, the transmitter output power circuit 644 may be configured to implement the following regarding Fig. 9 (including, for example, block 906), Fig.10 (including, for example, block 1008), Fig.11 (including, for example, block 1112) and Fig.12 (including, for example, block 1212) one or more of the functions described.

[0104] In some aspects of the present disclosure, the processor 604 may include an electromagnetic power density exposure and MPE circuit 646 configured for various functions, including, for example, determining an electromagnetic power density exposure level of the scheduled entity 600 (e.g., UE), and determining whether the electromagnetic power density exposure level is equal to or below a predetermined maximum allowed exposure (MPE) level. For example, the electromagnetic power density exposure and MPE circuit 646 may be configured to implement the following regarding Fig. 9 (including, for example, blocks 908 and 910), Fig.10 (including, for example, blocks 1010 and 1012), Fig.11 (including, for example, blocks 1114 and 1116) and Fig.12 (including, for example, blocks 1214 and 1216) one or more of the functions described.

[0105] In one or more examples, the computer-readable storage medium 606 may include a configured maximum UE output power (P UMAX ) determination and measurement software, the software being configured for various functions, including, for example, determining a maximum user equipment (UE) output power (P UMAX For example, the configured maximum UE output power (P UMAX ) determination and measurement software can be configured to implement the above Fig. 9 (including, for example, block 902), Fig.10 (including, for example, block 1002), Fig.11 (including, for example, block 1102) and Fig.12 (including, for example, block 1202) one or more of the functions described.

[0106] In one or more examples, the computer-readable storage medium 606 may include a priority determination power management maximum power reduction (P-MPR) software configured for various functions, including, for example, determining a priority order in which to change the power management maximum power reduction (P-MPR) value of each component carrier f of a serving cell c having a non-zero authorized transmit power. For example, the priority determination power management maximum power reduction (P-MPR) software may be configured to implement the following regarding Fig. 9 (including, for example, block 904), Fig.10 (including, for example, block 1004), Fig.11 (including, for example, block 1104) and Fig.12 (including, for example, block 1204) one or more of the functions described.

[0107] In one or more examples, the computer-readable storage medium 606 may include transmitter output power software configured for various functions, including, for example, reducing the transmitter output power of each carrier f of the serving cell c having a non-zero authorized transmit power according to the determined priority order by increasing the P-MPR of the carrier f of the serving cell c. For example, the transmitter output power software may be configured to implement the following regarding Fig. 9 (including, for example, block 906), Fig.10 (including, for example, block 1008), Fig.11 (including, for example, block 1112) and Fig.12 (including, for example, block 1212) one or more of the functions described.

[0108] In one or more examples, the computer-readable storage medium 606 may include electromagnetic power density exposure and MPE software configured for various functions, including, for example, determining an electromagnetic power density exposure level at a scheduled entity 600 (e.g., a UE), and determining whether the electromagnetic power density exposure level is equal to or below a predetermined maximum allowed exposure (MPE) level. For example, the electromagnetic power density exposure and MPE software may be configured to implement the following regarding Fig. 9 (including, for example, blocks 908 and 910), Fig.10 (including, for example, blocks 1010 and 1012), Fig.11 (including, for example, blocks 1114 and 1116) and Fig.12 (including, for example, blocks 1214 and 1216) one or more of the functions described.

[0109] Carrier aggregation can be used to increase the bandwidth used for downlink and uplink traffic between a scheduling entity (e.g., a base station, a network access node, an eNB, or a gNB) and a user equipment (UE) (e.g., a scheduled entity). Carrier aggregation can be implemented in frequency division duplex (FDD) and time division duplex (TDD) communications. In carrier aggregation, the total signal can include contributions from multiple component carriers. In some aspects, a component carrier can have a bandwidth of 1, 3, 4, 5, 10, 15, or 20 MHz. In some aspects, up to five component carriers can be aggregated to achieve a maximum possible aggregate bandwidth of 100 MHz.

[0110] Various types of carrier aggregation may be used by a transmitter (e.g., a scheduling entity or a transmitter of a UE (or scheduled entity). Intra-band contiguous carrier aggregation employs contiguous component carriers arranged in the same frequency band (e.g., a 3GPP LTE or NR frequency band). Intra-band non-contiguous carrier aggregation employs non-contiguous (e.g., spaced apart) component carriers in the same frequency band. Inter-band non-contiguous carrier aggregation employs one or more component carriers in a first frequency band and one or more other component carriers in a second frequency band different from the first frequency band.

[0111] In one implementation of carrier aggregation, a service cell may be defined for each component carrier. Because different frequencies of different component carriers may experience different path losses (especially in inter-band non-contiguous type carrier aggregation, where various component carriers may be separated from each other by frequency gaps between the first and second frequency bands), each component carrier may experience a different path loss than other component carriers of the aggregated carrier. Therefore, the size of the various service cell coverage areas may change based on the path loss of a given component carrier. Additionally or alternatively, one (or more) component carriers may be transmitted at a power level different from the remaining component carriers of the aggregated carrier, which also affects the size of the various service cell coverage areas. Therefore, the size of the various service cell coverage areas may change based on path loss and / or transmit power level.

[0112] In an aggregated carrier, one of the various serving cells may be designated as a primary serving cell (PSC), and each remaining serving cell may be designated as a secondary serving cell (SC). Note that there may be zero, one, or more secondary serving cells associated with a given primary serving cell. The primary serving cell may be served by a primary component carrier (PCC), and each secondary serving cell may be served by a secondary component carrier (SCC). According to one aspect, a radio resource control (RRC) connection is handled by a primary serving cell, which is served by a primary component carrier (e.g., DL PCC or UL PCC).

[0113] According to one aspect, the scheduling entity and / or the UE may determine to change the transmit power level of at least one component carrier from a current transmit power level to a first determined power level to ensure that the electromagnetic power density exposure due to uplink transmissions from the UE does not exceed a maximum permitted exposure (MPE) level. Electromagnetic power density and MPE are measured in milliwatts per unit area, such as mW / cm 2 .

[0114] When the scheduling entity determines that the transmit power level is to be changed, the scheduling entity may send an instruction in an RRC message. The RRC message may be transmitted using the primary component carrier of the primary serving cell. In response to these instructions, or based on its own determination, the UE may adjust the transmit output power of at least one component carrier to change the transmit power level to a first determined power level. The first determined power level may be an absolute value (e.g., changing the transmit power level to -10 dBm) or a relative value (e.g., changing the transmit power level by -2 dB). Another way to change the transmit power level of the UE is to change the power management maximum power reduction (P-MPR) of the UE. The power management UE maximum power reduction of component carrier f of the serving cell c used in carrier aggregation may be abbreviated as P-MPR. f，c .

[0115] Fig. 7A and Figure 7B is a graphical representation of inter-band non-contiguous carrier aggregation 700 in accordance with some aspects of the present disclosure. Fig. 7A and Figure 7B The same three component carriers are depicted. A first component carrier 702a is within a first frequency band 704. A second component carrier 706 is within a second frequency band 708. A third component carrier 710 is also within the second frequency band 708. The second component carrier 706 and the third component carrier 710 are adjacent. The first component carrier 702a and the adjacent second component carriers 706 and third component carriers 710 are not adjacent.

[0116] exist Fig. 7A and Figure 7B In the embodiment, the first component carrier 702a, the second component carrier 706 and the third component carrier 710 are used as uplink transmission (e.g., to Figure 8 8) from the UE (eg, Figure 8 Examples of uplink transmission may include at least one of a physical random access channel (PRACH) transmission, a physical uplink control channel (PUCCH) transmission, a physical uplink shared channel (PUSCH) transmission, or a sounding reference signal (SRS) transmission.

[0117] exist Fig. 7AIn , for exemplary and non-limiting purposes, the transmit power levels of the first component carrier 702a, the second component carrier 706, and the third component carrier 710 are substantially equal to a first predetermined power level p0, where p0>0 milliwatts, or in other words, p0 has a non-zero value. Figure 7B , the transmit power level of the first component carrier 702a is reduced from p0 to p1, where p0>p1>0 mW.

[0118] Figure 8 8 is a schematic diagram of a user equipment (UE) 804 sending an uplink transmission 812 to a scheduling entity 808 according to some aspects of the present disclosure. Examples of uplink transmission 812 may include at least one of a physical random access channel (PRACH) transmission, a physical uplink control channel (PUCCH) transmission, a physical uplink shared channel (PUSCH) transmission, or a sounding reference signal (SRS) transmission.

[0119] For exemplary and non-limiting reasons, the first serving cell 802a may be Fig. 7A The second serving cell 806 may be served by the first component carrier 702a. Fig. 7A The third serving cell 810 may be served by the second component carrier 706 of Fig. 7A The third component carrier 710 serves. Figure 8 , the solid line representations of the first serving cell 802a, the second serving cell 806, and the third serving cell 810 indicate that the first component carrier 702a, the second component carrier 706, and the third component carrier 710 are transmitted from the UE 804 at a transmission power level of p0.

[0120] Figure 8 Also depicted is a human figure 814. The human figure 814 is used as a stand-in to represent, for example, a human head, hand, or other body part. Figure 8 In the figure, the human figure 814 is located between the UE 804 and the scheduling entity 808. This positioning is intended to indicate that the uplink transmission 812 hits and / or enters and / or passes through a portion of the human body 814. In actual situations, the UE 804 can be, for example, held in a person's hand, placed in a pocket of a person's clothes, attached to a person's ear or near a person's head. The positioning of the human figure 814 between the UE 804 and the scheduling entity 808 is not meant to be restrictive. The UE 804 can radiate omnidirectionally and / or directionally. Regardless of the positioning of the human figure 814 relative to the UE 804 (e.g., between the UE 804 and the scheduling entity 808, behind the UE 804 and in a straight line with the scheduling entity 808, or any positioning), when the UE 804 is used for its intended purpose, the radiation from the UE 804 will hit and / or enter and / or pass through a portion of the human figure 814.

[0121] Standards bodies such as the 3rd Generation Partnership Project (3GPP) and / or the Institute of Electrical and Electronics Engineers (IEEE) have established maximum permitted electromagnetic power density exposure levels, referred to as maximum permitted exposure (MPE) levels, to ensure that when there is inter-band carrier aggregation, the sum of the power from aggregated component carriers on all frequency bands does not exceed the MPE level. Thus, the scheduling entity 808 and / or the UE 804 may set a transmit power level for each component carrier on the TDD U1 channel.

[0122] According to the new radio (NR) standard, the frequency range of 410MHz-7125MHz corresponds to the FR1 frequency range designation, while the frequency range of 24250MHz-52600MHz corresponds to the FR2 frequency range designation. In the time division duplex (TDD) mode, in the NR FR2 band designated as n257, the uplink (UL) operating band is equal to the downlink (DL) operating band, i.e., F UL_low -F UL_high =F DL_low -F DL_high =26500MHz-29500MHz. Twenty-eight GHz (28GHz) is used as a frequency band aliasing of the n257 band. In TDD mode, in the NR FR2 band designated as n258, the UL operating band is equal to the DL operating band, i.e., F UL_low -F UL_high =F DL_low -F DL_high =24250MHz-27500MHz. Twenty-six GHz (26GHz) is a frequency band aliasing of the n258 band. In TDD mode, in the NR FR2 band designated as n260, the uplink (UL) operating band is equal to the downlink operating band, i.e., F UL_low -F UL_high =F DL_low -F DL_high =37000MHz-40000MHz. Thirty-nine GHz (39GHz) is a frequency band aliasing of the n260 frequency band. Sixty GHz (60GHz) is a frequency band aliasing of the working frequency band within the 60GHz frequency range.

[0123] When inter-band carrier aggregation is present, regardless of whether the TDD modes across the bands are aligned or unaligned, the total MPE due to all aggregated component carriers should not exceed the MPE level set by a given standard setting body.

[0124] As previously described, in inter-band carrier aggregation, because the component carriers may be separated by a frequency gap and because the spacing between frequency bands is large, the path loss of the first component carrier 702a may be different from the path loss of the second component carrier 706. For example, at a UE (e.g., Figure 8 Given equal transmit power levels at UE 804, a first component carrier in the 28 GHz band may experience less path loss than a second component carrier in the 39 GHz band. As another example, assuming equal transmit power levels at the UE, a first component carrier in the 28 GHz band may experience less path loss than a second component carrier in the 60 GHz band.

[0125] exist Fig. 7A , Figure 7B and Figure 8 In the example of FIG. 8 , the first frequency band 704 may be a 28 GHz frequency band and the second frequency band 708 may be a 60 GHz frequency band. When the transmit power of UE 804 is set to p0 for the first component carrier 702a, the second component carrier 706, and the third component carrier 710, the ranges of the first serving cell 802a, the second serving cell 806, and the third serving cell 810 may be as shown. Although the second component carrier 706 and the third component carrier 710 experience greater path loss in the 60 GHz frequency band, the transmit power level p0 provides sufficient strength to allow UE 804 to communicate with the scheduling entity 808. However, because the path loss between UE 804 and the scheduling entity 808 is smaller for the first component carrier 702a (in the 28 GHz frequency band), the same output power level p0 provides potential communication with nodes that are far away from the scheduling entity 808.

[0126] exist Figure 8 In this non-limiting example, Fig. 7A and Figure 8 The total configured power P in the transmission case shown CMAX is the sum of the configured powers of all component carriers f of serving cell c with non-zero authorized transmit power at each corresponding reference point defined by f and c. Figure 8 In the example, the sum of the configured power of the first component carrier 702a of the first serving cell 802a, plus the configured power of the second component carrier 706 of the second serving cell 806, plus the configured power of the third component carrier 710 of the third serving cell 810 results in an electromagnetic power density exposure level for the human figure 814 exceeding the MPE level set by the standards setting agency.

[0127] Because the power level p0 of the first component carrier 702a causes the area of ​​the first serving cell 808a to be larger than the area required for the UE 804 to communicate with the scheduling entity 808, the transmit power level of the first component carrier may be reduced to p1, as shown in FIG. Figure 7BBy reducing the transmit power level of the first component carrier 702b to p1, the area of ​​the first serving cell 802a is also reduced to the area of ​​the reduced first serving cell 802b. The scheduling entity 808 is still within the range of the UE 804, however, reducing the transmit power of the first component carrier 702b to p1 has the effect of reducing the total configured power P CMAX The benefit of reducing the electromagnetic power density exposure level of the human figure 814 to be equal to or lower than the MPE level so that the human figure 814 has a satisfactory MPE level.

[0128] According to some aspects, the first serving cell 808a or the reduced first serving cell 808b may be a primary serving cell served by the first component carrier 702b (also referred to as a primary component carrier). RRC connection messages and user data may be sent on the primary component carrier. The second serving cell 806 may be a first secondary serving cell, which is served by the second component carrier 706 (also referred to as a first secondary component carrier). The third serving cell 810 may be a second secondary serving cell, which is served by the third component carrier 710 (also referred to as a second secondary component carrier). User data may be sent via the second component carrier 706 (i.e., the first secondary component carrier) and the third component carrier 710 (i.e., the second secondary component carrier) as desired.

[0129] As mentioned above, the total configured UE maximum output power P in the transmission case CMAX is the sum of the configured powers of each carrier f of the serving cell c with non-zero authorized transmit power in the corresponding reference point. The UE may be allowed to set its own maximum output power P CMAX The configured maximum UE output power (P CMAX ) is set so that the measured configured maximum UE output power (P UMAX ) is within the following range:

[0130] P PowerClass -MAX(MAX(MPR,A-MPR),P-MPR)-MAX{T(MAX(MPR,A-MPR)),T(P-MPR)}≤P UMAX ≤EIRP max

[0131] in

[0132] ·P PowerClass is the maximum UE power specified without considering the power level tolerance (e.g., for carrier aggregation EUTRA bands CA_1C and CA_40C, category 3, P Powerclass =23dBm);

[0133] MAX is a function that returns the maximum value from the supplied numbers (e.g., MAX(A, B) = A if A > B);

[0134] MPR is Maximum Power Reduction

[0135] A-MPR is additional maximum power reduction

[0136] P-MPR is power management maximum power reduction;

[0137] P-MPR f，c The maximum power reduction of the power management UE

[0138] For carrier f serving cell c;

[0139] ·T refers to the tolerance table, for example, T(P CMAX ) refers to P such as shown below CMAX Tolerance table:

[0140]

[0141]

[0142] The corresponding measured total radiated power P TMAX，f，c The limits of are:

[0143] P TMAX，f，c ≤TRP max

[0144] in

[0145] • TRPmax is the maximum Total Radiated Power (TRP) for a specified UE power class. Total Radiated Power (TRP) is a measure of how much power an antenna radiates when it is connected to an actual radio device (or transmitter).

[0146] P UMAX The value of can be defined as follows:

[0147] For each carrier f (i=1...n) and serving cell c (j=1...m), P UMAX =10*log10(∑p UMAX，f(i)，c(j) ), where p UMAx，f(i)，c(j) YesP UMAX，f(i)，c(j) The linear value of .

[0148] According to some aspects, a UE may use a downlink beam as a quasi-co-located (QCL) source for multiple UL beams. Two antenna ports are said to be quasi-co-located if the properties of the channel transmitting the symbols on one antenna port can be inferred from the channel transmitting the symbols on the other antenna port. Thus, the UE may estimate the properties of the uplink channel (e.g., path loss) based on the determined properties of the downlink channel.

[0149] P-MPR may be the maximum output power reduction allowed for a UE such as Figure 8 The UE 804) may apply the maximum output power reduction to each carrier f of the serving cell c. The UE may apply P-MPR to, for example, ensure compliance with applicable electromagnetic power density exposure requirements, address undesirable radiation / self-defense requirements in the case of simultaneous transmission on multiple radio access technologies (RATs), and / or ensure compliance with applicable electromagnetic power density exposure requirements in the case of proximity detection to address such requirements (e.g., MPE) that may require a lower maximum output power.

[0150] Proximity detection can be used to detect UEs (such as Figure 8 UE 804) is placed on a user (such as Figure 8 814). At least in the case of proximity detection, the UE can reduce its maximum output power by using P-MPR so that the UE complies with the MPE limit. The reduction in maximum output power can be achieved by increasing P-MPR, where, as mentioned above, P-MPR is a power management UE maximum power reduction for carrier f of serving cell c.

[0151] However, it may not be necessary to increase the P-MPR for each carrier f of each serving cell c. Fig. 7A , Figure 7B and Figure 8 As shown, there may be situations where, in carrier aggregation mode, power can be reduced for one or more component carriers (but less than all component carriers) in all serving cells. For the TDD UL carrier aggregation case, prioritizing the power reduction of component carriers in the serving cells can result in an orderly reduction in the total output power of the UE.

[0152] The first selection of prioritization may be based on the frequency band, more specifically, based on the center frequency of the frequency band or (aliasing). The first selection may be referred to as frequency band prioritization. In frequency band prioritization, one frequency band is prioritized over another frequency band. In one example, 28 GHz may have a higher priority than 39 GHz (28 GHz Priority >39GHz Priority In another example, 39 GHz may have a higher priority than 60 GHz (39 GHzPriority >60GHz Priority ). In frequency band prioritization, it is not always the case that the higher the frequency, the higher the priority. For example, in one case, 39 GHz may have a higher priority than 28 GHz (39 GHz Priority >28GHz Priority ).

[0153] In the band prioritization, a predetermined cell order may be selected, or the cell order may be determined and / or specified by a scheduling entity and may be transmitted to the UE in a downlink message (such as an RRC message). Alternatively, a predetermined cell order may be selected, or the cell order may be determined and / or specified by the UE itself (without receiving any instructions from the scheduling entity to implement any particular cell order).

[0154] As a non-limiting example, in an inter-band carrier aggregation scenario with two component carrier frequencies, each component carrier has two serving cells, the priority order or priority level of the cells can follow the following pattern C1 = (f(1), c(1)) > C2 = (f(1), c(2)) > C3 = (f(2), c(1)) > C4 = (f(2), c(2)), where f(i) identifies the component carrier frequency band and c(j) identifies the serving cell among the multiple serving cells served by the component carrier frequency band. According to the previous pattern, C1 has the highest priority. C1 has a higher priority than C2; C2 has a higher priority than C3, and C3 has a higher priority than C4.

[0155] For a given component carrier frequency and serving cell identity (represented by C1, C2, C3 and C4), a higher priority value may result in a higher P-MPR value. For a given component carrier frequency and serving cell pair, the P-MPR value may be determined relative to the currently established P-MPR value. The P-MPR may be stored in a memory of the UE. The higher the value of the P-MPR, the greater the reduction in transmit power. For example, if the current value of the P-MPR for a given component carrier frequency and serving cell is 2dB (indicating a 2dB reduction in transmit power), the higher value of the P-MPR may be any value above 2dB (e.g., 3dB). In another example, for a given component carrier frequency and serving cell identity, a smaller priority value may result in a higher P-MPR value.

[0156] Fig. 9 900 is a flow chart illustrating an exemplary method 900 of wireless communication using inter-band carrier aggregation at a user equipment (UE) according to some aspects of the present disclosure. As described below, in certain implementations within the scope of the present disclosure, some or all of the illustrated features may be omitted, and some of the illustrated features may not be required to implement all embodiments. In some examples, the method 900 may be performed by Figure 6 The method 900 is shown to be performed by the scheduling entity 600. In some examples, the method 900 can be performed by any suitable device or component for performing the functions or algorithms described below.

[0157] At block 902, the UE may determine a maximum UE output power (P UMAX ) value. According to one example, the need to reduce P UMAX The UE may make this determination based on the configuration of the UE with the value of P. For example, the detected configuration may be an indication that the UE is close to a surface, such as a person's head or a person's hand. According to some aspects, the UE may receive a request from the scheduling entity to reduce P. UMAX The value of the instruction is received, thereby reducing P based on the receipt of the instruction. UMAX Determination of the value of .

[0158] At block 904, the UE may determine a priority order in which to change a power management UE maximum power reduction (P-MPR) value for each component carrier f of a serving cell c having a non-zero authorized transmit power at a corresponding reference point defined by the component carrier frequency f and an associated serving cell c identity in a plurality of aggregated component carriers. According to some aspects, the UE may receive the priority order from a scheduling entity; then, the determination of the priority order may be based on the priority order received from the scheduling entity. For example, the priority order determined by the UE may be the priority order received from the scheduling entity.

[0159] At block 906, the UE may reduce the transmitter output power of each carrier f of the serving cell c having non-zero authorized transmit power according to the determined priority order by increasing the P-MPR of the carrier f of the serving cell c. The reduction in transmitter output power may reduce P UMAX .

[0160] At block 908, the UE may determine an electromagnetic power density exposure level at the UE. The determination of the electromagnetic power density exposure level may occur, for example, when reducing P UMAX after.

[0161] At block 910, the UE may determine whether the electromagnetic power density exposure level is equal to or lower than a predetermined maximum permissible exposure (MPE) level. If the electromagnetic power density exposure level is greater than the predetermined MPE level, the UE returns to block 906 to reduce the transmitter power. If at block 910, the electromagnetic power density exposure level is less than or equal to the predetermined maximum permissible exposure (MPE) level, the UE may end the practice of the method.

[0162] The second selection of prioritization can be based on the uplink UL channel priority. The second selection can be referred to as a channel prioritization selection. In one example, the uplink channel priority (C-pri) can range from a value of 1 to a value of 5, where 1 represents the highest priority and 5 represents the lowest priority. A greater or lesser number of priorities is also within the scope of the present disclosure. Therefore, for the example shown below, C-pri can be equal to 1, 2, 3, 4, or 5. Five UL channel transmissions are given below in order of priority. The five UL channel transmissions are presented for exemplary and non-limiting purposes. Other types of UL channel transmissions, other numbers of UL channel transmissions, and reordering of UL channel transmissions in order or rank are all within the scope of the present disclosure. An exemplary list of five UL channel transmissions is as follows, in order of priority, with 1 representing the highest priority:

[0163] 1. Physical random access channel (PRACH) transmission on the primary cell (PCell);

[0164] 2. Physical uplink control channel (PUCCH) transmission with HARQ-ACK information and / or scheduling request (SR) transmission, and / or physical uplink shared channel (PUSCH) transmission with HARQ-ACK information;

[0165] 3. PUCCH transmission with channel state information (CSI) and / or PUSCH transmission with CSI;

[0166] 4. PUSCH transmission without HARQ-ACK information or CSI; and

[0167] 5. Sounding Reference Signal (SRS) transmission, where aperiodic SRS has a higher priority than semi-persistent and / or periodic SRS or PRACH transmission on serving cells other than PCell.

[0168] In case of two or more uplink transmissions with the same channel priority level, and for carrier aggregation operation, the UE may, for example, prioritize power allocation of transmissions on a primary cell of a primary cell group (MCG) or secondary cell group (SCG) over transmissions on secondary cells.

[0169] The second selection (i.e., the prioritized selection) may be applied to an uplink channel having the same value as another priority. For example, another priority value may be "1" or "0". Other types of priority values ​​may be service priority values, such as "1" or "high" for ultra-reliable low-latency communication (URLLC), or "0" or "low" for enhanced mobile broadband (eMBB).

[0170] As with the first selection (band prioritization selection), the priority order of the P-MPR may be determined by the scheduling entity and communicated to the UE via, for example, an RRC configuration message, and / or determined by the UE without requiring any instructions to be sent from the scheduling entity to the UE to implement any particular order of UL channel transmissions. According to one aspect, the order or ranking of the types and priorities of the multiple channel transmissions may be predetermined, stored at the scheduling entity, and periodically communicated (e.g., as an update) to the UE, or may be predetermined and stored at the UE.

[0171] Fig.10 1 is a flow chart illustrating an exemplary method 1000 of wireless communication using inter-band carrier aggregation at a user equipment (UE) according to some aspects of the present disclosure. As described below, in certain implementations within the scope of the present disclosure, some or all of the illustrated features may be omitted, and some of the illustrated features may not be required to implement all embodiments. In some examples, the method may be Figure 6 The method 1000 is shown to be performed by the scheduling entity 600. In some examples, the method 1000 can be performed by any suitable device or component for performing the functions or algorithms described below.

[0172] At block 1002, the UE may determine a maximum UE output power (P UMAX ) value. According to one example, the need to reduce P UMAX The determination may be made based on the configuration of the UE with the value of P. For example, the detected configuration may be an indication that the UE is close to a surface, such as a person's head or a person's hand. According to some aspects, the UE may receive a request from the scheduling entity to reduce P. UMAX The value of the instruction is received, thereby reducing P based on the receipt of the instruction. UMAX Determination of the value of .

[0173] At block 1004, the UE may determine a priority order for multiple types of uplink (UL) transmissions. According to some aspects, the UE may receive the priority order from a scheduling entity; the determination of the priority order may then be based on the priority order received from the scheduling entity. For example, the priority order determined by the UE may be the priority order received from the scheduling entity.

[0174] At block 1006, the UE may assign a priority value to each type of UL transmission based on the determined priority order. According to one aspect, a power-managed UE maximum power reduction (P-MPR) value associated with each given type of UL transmission may be changed based on the priority value assigned to the given type of UL transmission.

[0175] At block 1008, the UE may reduce the transmitter output power associated with a given type of UL transmission according to the determined priority order during the given type of UL transmission by increasing the P-MPR (associated with the given type of UL transmission). The reduction in transmitter output power may reduce the P-MPR. UMAX .

[0176] At block 1010, the UE may determine an electromagnetic power density exposure level at the UE. The determination of the electromagnetic power density exposure level may occur, for example, when reducing P UMAX after.

[0177] At block 1012, the UE may determine whether the electromagnetic power density exposure level is equal to or below a predetermined maximum permissible exposure (MPE) level. If the electromagnetic power density exposure level is greater than the predetermined MPE level, the UE returns to block 1008 and reduces the transmitter power. If at block 1012, the electromagnetic power density exposure level is less than or equal to the predetermined maximum permissible exposure (MPE) level, the UE may end the practice of the method.

[0178] The third option of prioritization may be based on another type of priority or priorities associated with various uplink channels. For example, another type of priority may be a service priority. The third option may be referred to as a service prioritization option. The third option may be useful in the case of mixed service priorities, such as "1" or "high" for ultra-reliable low latency communication (URLLC), or "0" or "low" for enhanced mobile broadband (eMBB). According to one aspect, the service priority (S-pri) value may be equal to "0" for eMBB and "1" for URLLC. Other types of services and different service priority values ​​are also within the scope of the present disclosure.

[0179] In one aspect, service prioritization may include service prioritization and channel prioritization. For example, the UE may first prioritize a first set of UL channels having a higher service priority (S-pri) over a second set of UL channels having a lower service priority, where the first set and the second set are different. Second, the UE may prioritize UL channels in a given one of the first set and the second set using channel prioritization (C-pri), as described above with respect to the second option.

[0180] The following three sets of examples illustrate service prioritization selection. The “>” symbol indicates that the UL channel to the left of the “>” symbol has a higher priority than the UL channel to the right of the symbol. The three sets of examples are:

[0181] PUCCH with ACK in PUCCH group 1 with higher S-pri value > PUSCH with ACK in PUCCH group 2 with lower S-pri value

[0182] PUSCH with ACK in PUCCH group 1 with higher S-pri value > PUSCH with ACK in PUCCH group 2 with lower S-pri value

[0183] PUCCH with CSI in PUCCH group 1 with higher S-pri value > PUCCH with ACK in PUCCH group 2 with lower S-pri value

[0184] The three examples given above are for illustrative purposes only and are not intended to be limiting. Other types of UL channels or other combinations or UL channels with other types of information are also within the scope of the present disclosure.

[0185] As a further example, four cases can be considered. Each case involves a PUCCH with a first group (group 1) and a second group (group 2). In case one, a PUCCH with an S-pri value of 1 in PUCCH group 1 is compared with a PUSCH with an S-pri value of 0 in PUCCH group 2. According to the service prioritization selection, the PUCCH in PUCCH group 1 with an S-pri value of 1 is given a higher priority in terms of transmit power than the PUSCH in PUCCH group 2 with an S-pri value of 0.

[0186] In case 2, the PUSCH with an S-pri value of 1 in PUCCH group 1 is compared with the PUSCH with an S-pri value of 0 in PUCCH group 2. According to the service prioritization selection, the PUSCH in PUCCH group 1 with an S-pri value of 1 is given a higher priority in terms of transmit power than the PUSCH in PUCCH group 2 with an S-pri value of 0.

[0187] In case three, the PUCCH with an S-pri value of 0 in PUCCH group 1 is compared with the PUCCH with an S-pri value of 1 in PUCCH group 2. According to the service prioritization selection, the PUCCH in PUCCH group 2 with an S-pri value of 1 is given a higher priority in transmit power than the PUCCH in PUCCH group 1 with an S-pri value of 0.

[0188] In case four, the PUSCH with an S-pri value of 0 in PUCCH group 1 is compared with the PUCCH with an S-pri value of 1 in PUCCH group 2. According to the service prioritization selection, the PUCCH in PUCCH group 2 with an S-pri value of 1 is given a higher priority in transmit power than the PUSCH in PUCCH group 1 with an S-pri value of 0.

[0189] As with the first and second options, the priority order or priority level of the various UL channels may be determined by the scheduling entity and transmitted to the UE via, for example, an RRC configuration message, and / or determined by the UE without sending any instructions from the scheduling entity to the UE. According to one aspect, the order or ranking of the various UL channel types and the position of each of the various UL channel types in the order or ranking may be predetermined, may be stored at the scheduling entity, and periodically transmitted (e.g., as an update) to the UE, or may be predetermined and stored at the UE.

[0190] Fig.11 1 is a flow chart illustrating an exemplary method 1100 for wireless communication using inter-band carrier aggregation at a user equipment (UE) according to some aspects of the present disclosure. As described below, in certain implementations within the scope of the present disclosure, some or all of the illustrated features may be omitted, and some of the illustrated features may not be required to implement all embodiments. In some examples, the method 1100 may be performed by Figure 6 The method 1100 is shown to be performed by the scheduling entity 600. In some examples, the method 1100 can be performed by any suitable device or component for performing the functions or algorithms described below.

[0191] At block 1102, the UE may determine a maximum UE output power (P UMAX ) value. According to one example, the need to reduce P UMAX The UE may make this determination based on the configuration of the UE with the value of P. For example, the detected configuration may be an indication that the UE is close to a surface, such as a person's head or a person's hand. According to some aspects, the UE may receive a request from the scheduling entity to reduce P. UMAX The value of the instruction is received, thereby reducing P based on the receipt of the instruction. UMAX Determination of the value of .

[0192] At block 1104 , the UE may select a first UL channel from a first PUCCH group of PUCCHs having a plurality of PUCCH groups and a second UL channel from a second PUCCH group of PUCCHs having a plurality of PUCCH groups.

[0193] At box 1106, the UE may determine (e.g., by comparison) whether a first service priority (S-pri) value of the first UL channel is higher than a second S-pri value of the second UL channel. If the first S-pri value is higher than the second S-pri value, then at box 1108, transmission of the first UL channel is given a higher priority than transmission of the second UL channel. If the first S-pri value is less than the second S-pri value, then at box 1110, transmission of the second UL channel is given a higher priority than transmission of the first UL channel. In other words, the UE may give a higher transmission priority to the channel with the highest S-pri value, the first UL channel or the second UL channel. According to one aspect, the value of the power management UE maximum power reduction (P-MPR) associated with the first UL channel and the second UL channel will change depending on which UL channel is given the highest priority.

[0194] According to some aspects, the UE may receive a priority order from the scheduling entity; the determination of the priority order may then be based on the priority order received from the scheduling entity. For example, the priority order determined by the UE may be the priority order received from the scheduling entity.

[0195] At block 1112, the UE may reduce the transmitter output power associated with the higher priority UL channel by increasing the P-MPR associated with the higher priority UL channel. The reduction in transmitter output power may reduce the P UMAX .

[0196] At block 1114, the UE may determine an electromagnetic power density exposure level at the UE. The determination of the electromagnetic power density exposure level may occur, for example, when reducing P UMAX after.

[0197] At block 1116, the UE may determine whether the electromagnetic power density exposure level is equal to or lower than a predetermined maximum permissible exposure (MPE) level. If the electromagnetic power density exposure level is greater than the predetermined MPE level, the UE returns to block 1112 and reduces the transmitter power. If at block 1116, the electromagnetic power density exposure level is less than or equal to the predetermined maximum permissible exposure (MPE) level, the UE may end the practice of the method.

[0198] According to a third option, when given different UL channels having the same S-pri value, it may be determined which UL channel receives the highest transmit power priority by applying the priority order described in conjunction with the second selected channel prioritization (C-pri). According to one example, the UE may first prioritize UL channels having a higher service priority (S-pri), and then prioritize UL channels having the same channel priority as the second selected channel priority (C-pri). The priority order or priority level of the UL channels may be determined and / or specified by a scheduling entity and may be transmitted to the UE in a downlink message such as an RRC message. Alternatively, the priority order or priority level may be determined and / or specified by the UE itself (without receiving any instructions to implement any particular order or level).

[0199] Fig.13 1 is a flow chart illustrating an exemplary method 1300 of wireless communication using inter-band carrier aggregation at a user equipment (UE) according to some aspects of the present disclosure. As described below, in certain implementations within the scope of the present disclosure, some or all of the illustrated features may be omitted, and some of the illustrated features may not be required to implement all embodiments. In some examples, the method 1100 may be performed by Figure 6 The method 1100 is shown to be performed by the scheduling entity 600. In some examples, the method 1100 can be performed by any suitable device or component for performing the functions or algorithms described below.

[0200] At block 1302, the UE may determine a maximum UE output power (P UMAX ) value. According to one example, the need to reduce P UMAX The UE may make this determination based on the configuration of the UE with the value of P. For example, the detected configuration may be an indication that the UE is close to a surface, such as a person's head or a person's hand. According to some aspects, the UE may receive a request from the scheduling entity to reduce P. UMAX The value of the instruction is received, thereby reducing P based on the receipt of the instruction. UMAX Determination of the value of .

[0201] At block 1304, the UE may select a first UL channel from a first PUCCH group of PUCCHs having a plurality of PUCCH groups and select a second UL channel from a second PUCCH group of PUCCHs having a plurality of PUCCH groups.

[0202] At block 1306, the UE may determine (e.g., by comparison) whether a first service priority (S-pri) value of the first UL channel is equal to a second S-pri value of the second UL channel. If the first S-pri value is equal to the second S-pri value, the UE may perform channel priority (C-pri) prioritization at block 1308, as in the second option given above. If the first S-pri value is not equal to the second S-pri value, the UE may perform further service priority (S-pri) prioritization at block 1310, as in the third option given above (e.g., Fig.11 1106-1116).

[0203] The fourth option of prioritization can be based on a hybrid prioritization associated with channel priority (C-pri) values ​​and service priority (S-pri) values ​​for various uplink channels. The fourth option may be referred to as a hybrid prioritization option. Similar to the third option, the fourth option may be useful in the presence of a hybrid service priority, such as "1" or "high" for ultra-reliable low latency communication (URLLC), or "0" or "low" for enhanced mobile broadband (eMBB). According to one aspect, for eMBB, the S-pri value may be equal to "0", and for URLLC, the S-pri value may be equal to "1". Other types of services and different service priorities are also within the scope of the present disclosure. For the purposes of the examples described below, the channel priority (C-pri) may be the same as that set forth above with respect to the second option.

[0204] In one aspect, hybrid prioritization may include service prioritization and channel prioritization. For example, the UE may first prioritize a first set of UL channels having a higher channel priority (C-pri) than a second set of UL channels, where the first set and the second set are different, as described above with respect to the second option. Second, the UE may use service prioritization to prioritize UL channels in a given one of the first set and the second set, as described above with respect to the third option.

[0205] The following three sets of examples illustrate hybrid prioritization selection. The “>” symbol indicates that the UL channel to the left of the “>” symbol has a higher priority than the UL channel to the right of the symbol. The three sets of examples are:

[0206] PUCCH with ACK in PUCCH group 1 with higher S-pri value > PUCCH with ACK in PUCCH group 2 with lower S-pri value;

[0207] PUSCH with ACK in PUCCH group 1 > PUSCH with CSI in PUCCH group 2;

[0208] • PUCCH with ACK in PUCCH group 1 of higher S-pri value > PUSCH with ACK in PUCCH group 2 of lower S-pri value.

[0209] The three examples given above are for illustrative purposes only and are not intended to be limiting. Other types of UL channels or other combinations or UL channels with other types of information are also within the scope of the present disclosure.

[0210] As with the first, second, and third options, the priority order or priority level of the various UL channels may be determined by the scheduling entity and transmitted to the UE via, for example, an RRC configuration message, and / or determined by the UE without sending any instructions from the scheduling entity to the UE. According to one aspect, the order or ranking of the various UL channel types and the position of each of the various UL channel types in the order or ranking may be predetermined, may be stored at the scheduling entity, and periodically transmitted (e.g., as an update) to the UE, or may be predetermined and stored at the UE.

[0211] Fig.12 1 is a flow chart illustrating an exemplary method 1200 of wireless communication using inter-band carrier aggregation at a user equipment (UE) according to some aspects of the present disclosure. As described below, in certain implementations within the scope of the present disclosure, some or all of the illustrated features may be omitted, and some of the illustrated features may not be required to implement all embodiments. In some examples, the method 1200 may be performed by Figure 6 The method 1200 is shown to be performed by the scheduling entity 600. In some examples, the method 1200 can be performed by any suitable device or component for performing the functions or algorithms described below.

[0212] At block 1202, the UE may determine a maximum UE output power (P UMAX ) value. According to one example, the need to reduce P UMAX The UE may make this determination based on the configuration of the UE with the value of P. For example, the detected configuration may be an indication that the UE is close to a surface, such as a person's head or a person's hand. According to some aspects, the UE may receive a request from the scheduling entity to reduce P. UMAX The value of the instruction is received, thereby reducing P based on the receipt of the instruction. UMAX Determination of the value of .

[0213] At block 1204, the UE may select a first UL channel from a first PUCCH group of PUCCHs having a plurality of PUCCH groups and a second UL channel from a second PUCCH group of PUCCHs having a plurality of PUCCH groups.

[0214] At block 1206, the UE may determine (e.g., by comparison) whether a first channel priority (C-pri) value of the first UL channel is higher than a second C-pri value of the second UL channel. If the first C-pri value is higher than the second C-pri value, then at block 1208, transmission of the first UL channel is given a higher priority than transmission of the second UL channel. If the first C-pri value is less than the second C-pri value, then at block 1210, transmission of the second UL channel is given a higher priority than transmission of the first UL channel. In other words, the UE may give a higher transmission priority to the first UL channel or the second UL channel having the highest C-pri value. According to one aspect, the value of the power management UE maximum power reduction (P-MPR) associated with the first UL channel and the second UL channel will change depending on which UL channel is given the highest priority.

[0215] According to some aspects, the UE may receive a priority order from a scheduling entity; the determination of the priority order may be based on the priority order received from the scheduling entity. For example, the priority order determined by the UE may be the priority order received from the scheduling entity.

[0216] At block 1212, the UE may reduce the transmitter output power associated with the higher priority UL channel by increasing the P-MPR associated with the higher priority UL channel. The reduction in transmitter output power may reduce the P UMAX .

[0217] At block 1214, the UE may determine an electromagnetic power density exposure level at the UE. The determination of the electromagnetic power density exposure level may occur, for example, when reducing P UMAX after.

[0218] At block 1216, the UE may determine whether the electromagnetic power density exposure level is equal to or lower than a predetermined maximum permissible exposure (MPE) level. If the electromagnetic power density exposure level is greater than the predetermined MPE level, the UE returns to block 1212 and reduces the transmitter power. If at block 1216, the electromagnetic power density exposure level is less than or equal to the predetermined maximum permissible exposure (MPE) level, the UE may end the practice of the method.

[0219] According to a fourth option, when given different UL channels with the same C-pri value, it is possible to determine which UL channel receives the highest transmit power priority by applying the priority order described in conjunction with the third option (service prioritization). According to another example, the UE may first prioritize UL channels with lower channel priorities as in the second option (C-pri), and secondly prioritize UL channels with higher service priorities (S-pri) as in the third option (S-pri). According to yet another example, the UE may first prioritize UL channels with higher channel priorities as in the second option (C-pri), and secondly prioritize UL channels with higher service priorities (S-pri) as in the third option (S-pri). The order of the rank of the UL channels may be determined and / or specified by the scheduling entity and may be transmitted to the UE via a downlink message (such as an RRC message). Alternatively, the order of the rank may be determined and / or specified by the UE itself (without receiving any instructions to implement any particular rank order).

[0220] Fig.14 1 is a flow chart illustrating an exemplary method 1400 for wireless communication using inter-band carrier aggregation at a user equipment (UE) according to some aspects of the present disclosure. As described below, in certain implementations within the scope of the present disclosure, some or all of the illustrated features may be omitted, and some of the illustrated features may not be required to implement all embodiments. In some examples, the method 1400 may be performed by Figure 6 The method 1400 is shown to be performed by the scheduling entity 600. In some examples, the method 1400 can be performed by any suitable device or component for performing the functions or algorithms described below.

[0221] At block 1402, the UE may determine a maximum UE output power (P UMAX ) value. According to one example, the need to reduce P UMAX The UE may make this determination based on the configuration of the UE with the value of P. For example, the detected configuration may be an indication that the UE is close to a surface, such as a person's head or a person's hand. According to some aspects, the UE may receive a request from the scheduling entity to reduce P. UMAX The value of the instruction is received, thereby reducing P based on the receipt of the instruction. UMAX Determination of the value of .

[0222] At block 1404, the UE may select a first UL channel from a first PUCCH group of PUCCHs having a plurality of PUCCH groups and select a second UL channel from a second PUCCH group of PUCCHs having a plurality of PUCCH groups.

[0223] At block 1406, the UE may determine (e.g., by comparison) whether a first channel priority (C-pri) value of the first UL channel is equal to a second C-pri value of the second UL channel. If the first C-pri value is equal to the second C-pri value, the UE may perform service priority (S-pri) prioritization at block 1408, as in the third option given above. If the first C-pri value is not equal to the second C-pri value, the UE may perform further channel priority (C-pri) prioritization at block 1410, as in the fourth option given above (e.g., Fig.12 ).

[0224] In one configuration, an apparatus 500, 600 for wireless communication includes a method for determining a maximum user equipment (UE) output power (P UMAX ) value; a component for determining a priority order in which the value of the power management maximum power reduction (P-MPR) of each component carrier f of the service cell c with non-zero authorized transmit power is to be changed; a component for reducing the transmitter output power of each carrier f of the service cell c with non-zero authorized transmit power according to the determined priority order by increasing the P-MPR of the carrier f of the service cell c; a component for determining an electromagnetic power density exposure level at the UE; a component for determining whether the electromagnetic power density exposure level is equal to or lower than a predetermined maximum permitted exposure (MPE) level; and a component for returning to reducing the transmitter output power if the electromagnetic power density exposure level is greater than the predetermined MPE level.

[0225] In one aspect, the aforementioned components may be Figure 5 and Figure 6 The processor(s) 504, 604 shown in the figure are configured to perform the functions described by the aforementioned components. On the other hand, the aforementioned components may be a circuit or any device configured to perform the functions described by the aforementioned components.

[0226] Of course, in the above examples, the circuits included in the processor 504 are provided only as examples, and other components for performing the described functions may be included in various aspects of the present disclosure, including but not limited to instructions stored in the computer-readable storage medium 506, or in Figure 1 , 2 , 3 and / or Figure 8 any of the ones described in and using for example here about Figure 9-14 Any other suitable means or components of the described processes and / or algorithms.

[0227] Several aspects of a wireless communication network have been described with reference to exemplary implementations. As those skilled in the art will readily appreciate, various aspects described throughout this disclosure may be extended to other telecommunication systems, network architectures, and communication standards.

[0228] For example, various aspects may be implemented in other systems defined by 3GPP, such as Long Term Evolution (LTE), Evolved Packet System (EPS), Universal Mobile Telecommunications System (UMTS), and / or Global System for Mobile Communications (GSM). Various aspects may also be extended to systems defined by the Third Generation Partnership Project 2 (3GPP2), such as CDMA2000 and / or Evolution Data Optimized (EV-DO). Other examples may be implemented in systems employing IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Ultra Wideband (UWB), Bluetooth, and / or other suitable systems. The actual telecommunication standard, network architecture, and / or communication standard employed will depend on the specific application and the overall design constraints imposed on the system.

[0229] In this disclosure, the word "exemplary" is used to mean "serving as an example, instance, or illustration". Any implementation or aspect described herein as "exemplary" is not necessarily to be construed as being preferred or advantageous over other aspects of the disclosure. Likewise, the term "aspect" does not require that all aspects of the disclosure include the features, advantages, or modes of operation discussed. The term "coupled" as used herein refers to a direct or indirect coupling between two objects. For example, if object A physically contacts object B, and object B contacts object C, then objects A and C can still be considered to be coupled to each other - even if they are not in direct physical contact with each other. For example, a first object can be coupled to a second object even if the first object has never been in direct physical contact with the second object. The terms "circuit" and "circuitry" are used broadly and are intended to include hardware implementations of electrical devices and conductors, which, when connected and configured, implement the performance of the functions described in this disclosure, without limitation to the type of electronic circuits; and software implementations of information and instructions, which, when executed by a processor, implement the performance of the functions described in this disclosure.

[0230] Figure 1-14 One or more components, steps, features and / or functions shown in the drawings can be rearranged and / or combined into a single component, step, feature or function, or embodied in several components, steps or functions. Additional elements, components, steps and / or functions can also be added without departing from the novel features disclosed herein. Figure 1-14 The devices, apparatuses and / or components shown in the can be configured to perform one or more methods, features or steps described herein. The novel algorithms described herein can also be effectively implemented in software and / or embedded in hardware.

[0231] It should be understood that the specific order or hierarchy of steps in the disclosed methods is an illustration of an exemplary process. Based on design preferences, it should be understood that the specific order or hierarchy of steps in the methods can be rearranged. The accompanying method claims present elements of the various steps in an example order, and are not meant to be limited to the specific order or hierarchy presented unless specifically stated therein.

[0232] The foregoing description is provided to enable those skilled in the art to practice the various aspects described herein. It will be readily apparent to those skilled in the art that various modifications to these aspects are to be made, and the general principles defined herein may be applicable to other aspects. Therefore, the claims are not intended to be limited to the aspects shown herein, but to conform to the full scope consistent with the language of the claims, wherein, unless otherwise specifically stated, reference to an element in the singular form is not intended to mean "one and only one", but rather "one or more". Unless otherwise specified, the term "some" refers to one or more. A phrase referring to "at least one" in a series of items refers to any combination of these items, including a single member. For example, "at least one of a, b, or c" is intended to cover a; b; c; a and b; a and c; b and c; and a, b, and c. All structural and functional equivalents of the elements of the various aspects described in this disclosure known to or to be known to those of ordinary skill in the art are expressly incorporated herein by reference, and are intended to be included by the claims. In addition, nothing disclosed herein is intended to be dedicated to the public, regardless of whether such disclosure is explicitly stated in the claims.

Claims

1. A method of wireless communication using inter-band carrier aggregation at a user equipment UE, comprising: Determine the maximum UE output power P for the configuration that reduces the measurement UMAX The value of determining a frequency band priority order in which the value of the power management maximum power reduction P-MPR of each component carrier f of a serving cell c having a non-zero authorized transmit power is to be changed; reducing the transmitter output power of each component carrier f of the serving cell c having the non-zero authorized transmit power by increasing the P-MPR of the component carrier f of the serving cell c according to the determined frequency band priority order; Determine electromagnetic power density exposure levels; determining whether the electromagnetic power density exposure level is equal to or lower than a predetermined maximum permissible exposure (MPE) level; and If the electromagnetic power density exposure level is greater than the predetermined MPE level, reducing the transmitter output power is performed.

2. The wireless communication method according to claim 1, further comprising: receiving an instruction from a scheduling entity, the instruction causing the UE to determine to reduce the P UMAX The value of .

3. The method according to claim 1, further comprising: The frequency band priority order is received from a scheduling entity.

4. The method according to claim 1, further comprising: Detection requires reducing the P UMAX configuration of the UE of the value.

5. The method according to claim 4, further comprising: Detecting an indication that the UE is close to a surface as a need to reduce the P UMAX configuration of the UE of the value. The method of claim 5 , wherein the surface is a human head or a human hand.

7. An apparatus for wireless communication, comprising: Maximum user equipment UE output power P for determining configuration to reduce measurement UMAX The value of the component; means for determining a priority order of frequency bands in which the value of the power management maximum power reduction P-MPR of each component carrier f of a serving cell c having a non-zero authorized transmit power is to be changed; means for reducing the transmitter output power of each component carrier f of the serving cell c having said non-zero authorized transmit power by increasing the P-MPR of said component carrier f of the serving cell c according to the determined frequency band priority order; Components used to determine electromagnetic power density exposure levels; A component for determining whether the electromagnetic power density exposure level is equal to or lower than a predetermined maximum permissible exposure MPE level; as well as Means for returning to reducing said transmitter output power if said electromagnetic power density exposure level is greater than said predetermined MPE level.

8. A non-transitory computer-readable medium storing computer executable code, comprising code for causing a computer to: Determine the maximum user equipment UE output power P of the configuration for reducing the measurement UMAX The value of determining a frequency band priority order in which the value of the power management maximum power reduction P-MPR of each component carrier f of a serving cell c having a non-zero authorized transmit power is to be changed; reducing the transmitter output power of each component carrier f of the serving cell c having the non-zero authorized transmit power by increasing the P-MPR of the component carrier f of the serving cell c according to the determined frequency band priority order; Determine electromagnetic power density exposure levels; determining whether the electromagnetic power density exposure level is equal to or lower than a predetermined maximum permissible exposure (MPE) level; and If the electromagnetic power density exposure level is greater than the predetermined MPE level, returning to reducing the transmitter output power.

9. An apparatus for wireless communication, comprising: processor; a transceiver communicatively coupled to the processor; as well as a memory communicatively coupled to the processor, wherein the processor is configured to: Determine the maximum user equipment UE output power P of the configuration for reducing the measurement UMAX The value of determining a frequency band priority order in which the value of the power management maximum power reduction P-MPR of each component carrier f of a serving cell c having a non-zero authorized transmit power is to be changed; reducing the transmitter output power of each component carrier f of the serving cell c having the non-zero authorized transmit power by increasing the P-MPR of the component carrier f of the serving cell c according to the determined priority order; Determine electromagnetic power density exposure levels; determining whether the electromagnetic power density exposure level is equal to or lower than a predetermined maximum permissible exposure (MPE) level; and If the electromagnetic power density exposure level is greater than the predetermined MPE level, returning to reducing the transmitter output power.

10. A method of wireless communication using inter-band carrier aggregation at a user equipment UE, comprising: Determine the maximum user equipment UE output power P of the configuration for reducing the measurement UMAX The value of Determining a channel priority order for multiple types of uplink (UL) transmissions; assigning a priority value to each type of UL transmission according to the determined channel priority order; During a given type of UL transmission, reducing a transmitter output power associated with the given type of UL transmission by increasing the P-MPR according to the determined channel priority order; Determine electromagnetic power density exposure levels; determining whether the electromagnetic power density exposure level is equal to or lower than a predetermined maximum permissible exposure (MPE) level; and If the electromagnetic power density exposure level is greater than the predetermined MPE level, returning to reducing the transmitter output power.

11. The method for wireless communication according to claim 10, further comprising: receiving an instruction from a scheduling entity, wherein the instruction causes the user equipment UE to determine to reduce the P UMAX The value of .

12. The method according to claim 10, further comprising: The channel priority order is received from a scheduling entity.

13. The method according to claim 10, further comprising: Detection requires reducing the P UMAX configuration of the user equipment UE of the value.

14. The method according to claim 13, further comprising: detecting an indication that the user equipment UE is close to a surface as a need to reduce the P UMAX configuration of the user equipment UE of the value.

15. The method of claim 14, wherein the surface is a human head or a human hand.

16. An apparatus for wireless communication, comprising: Maximum user equipment UE output power P for determining configuration to reduce measurement UMAX The value of the component; means for determining a channel priority order for multiple types of uplink (UL) transmissions; means for assigning a priority value to each type of UL transmission according to the determined channel priority order; means for reducing transmitter output power associated with a given type of UL transmission during the given type of UL transmission by increasing the P-MPR according to the determined channel priority order; Components used to determine electromagnetic power density exposure levels; A component for determining whether the electromagnetic power density exposure level is equal to or lower than a predetermined maximum permissible exposure MPE level; as well as Means for returning said transmitter output power to reduction if said electromagnetic power density exposure level is greater than said predetermined MPE level.

17. A non-transitory computer-readable medium storing computer executable code, comprising code for causing a computer to: Determine the maximum user equipment UE output power P of the configuration for reducing the measurement UMAX The value of Determining a channel priority order for multiple types of uplink (UL) transmissions; assigning a priority value to each type of UL transmission according to the determined channel priority order; During a given type of UL transmission, reducing a transmitter output power associated with the given type of UL transmission by increasing the P-MPR according to the determined channel priority order; Determine electromagnetic power density exposure levels; determining whether the electromagnetic power density exposure level is equal to or lower than a predetermined maximum permissible exposure (MPE) level; and If the electromagnetic power density exposure level is greater than the predetermined MPE level, returning to reducing the transmitter output power.

18. An apparatus for wireless communication, comprising: processor; a transceiver communicatively coupled to the processor; as well as a memory communicatively coupled to the processor, wherein the processor is configured to: Determine the maximum user equipment UE output power P of the configuration for reducing the measurement UMAX The value of Determining a channel priority order for multiple types of uplink (UL) transmissions; assigning a priority value to each type of UL transmission according to the determined channel priority order; During a given type of UL transmission, reducing a transmitter output power associated with the given type of UL transmission by increasing the P-MPR according to the determined channel priority order; Determine electromagnetic power density exposure levels; determining whether the electromagnetic power density exposure level is equal to or lower than a predetermined maximum permissible exposure (MPE) level; and If the electromagnetic power density exposure level is greater than the predetermined MPE level, returning to reducing the transmitter output power.

19. A method of wireless communication using inter-band carrier aggregation at a user equipment (UE), comprising: Determine the maximum user equipment UE output power P of the configuration for reducing the measurement UMAX The value of selecting a first UL channel from a first PUCCH group of PUCCHs having a plurality of PUCCH groups, and selecting a second UL channel from a second PUCCH group of the PUCCHs having the plurality of PUCCH groups; determining whether a first service priority S-pri value of the first UL channel is higher than a second S-pri value of the second UL channel; Giving a higher transmission priority to the UL channel having the highest S-pri value among the first UL channel and the second UL channel; reducing a transmitter output power associated with the higher priority UL channel by increasing a P-MPR associated with the higher priority UL channel; Determine electromagnetic power density exposure levels; determining whether the electromagnetic power density exposure level is equal to or lower than a predetermined maximum permissible exposure MPE level; If the electromagnetic power density exposure level is greater than the predetermined MPE level, returning to reducing the transmitter output power; When the first S-pri value is equal to the second S-pri value, determining whether a first channel priority C-pri value of the first UL channel is higher than a second C-pri value of the second UL channel; and When the first S-pri value is equal to the second S-pri value, a higher transmission priority is given to the UL channel with the highest C-pri value among the first UL channel or the second UL channel.

20. The method of wireless communication according to claim 19, further comprising: receiving an instruction from a scheduling entity, wherein the instruction causes the user equipment UE to determine to reduce the P UMAX The value of .

21. The method of claim 19, further comprising: A priority order is received from a scheduling entity.

22. The method of claim 19, further comprising: Detection requires reducing the P UMAX configuration of the user equipment (UE) of the value.

23. The method according to claim 22, further comprising: detecting an indication that the user equipment UE is close to a surface as a need to reduce the P UMAX configuration of the user equipment UE of the value.

24. The method of claim 23, wherein the surface is a human head or a human hand.

25. An apparatus for wireless communication, comprising: Maximum user equipment UE output power P for determining configuration to reduce measurement UMAX The value of the component; means for selecting a first UL channel from a first PUCCH group of PUCCHs having a plurality of PUCCH groups and selecting a second UL channel from a second PUCCH group of the PUCCHs having the plurality of PUCCH groups; A component for determining whether a first service priority S-pri value of the first UL channel is higher than a second S-pri value of the second UL channel; a means for giving a higher transmission priority to a UL channel having a highest S-pri value among the first UL channel or the second UL channel; means for reducing a transmitter output power associated with a higher priority UL channel by increasing a P-MPR associated with the higher priority UL channel; Components used to determine electromagnetic power density exposure levels; A component for determining whether the electromagnetic power density exposure level is equal to or lower than a predetermined maximum permissible exposure MPE level; means for returning to reducing the transmitter output power if the electromagnetic power density exposure level is greater than the predetermined MPE level; When the first S-pri value is equal to the second S-pri value, a means for determining whether a first channel priority C-pri value of the first UL channel is higher than a second C-pri value of the second UL channel; and When the first S-pri value is equal to the second S-pri value, a component giving a higher transmission priority to a UL channel having a highest C-pri value among the first UL channel or the second UL channel.

26. A non-transitory computer-readable medium storing computer executable code, comprising code for causing a computer to: Determine the maximum user equipment UE output power P of the configuration for reducing the measurement UMAX The value of selecting a first UL channel from a first PUCCH group of PUCCHs having a plurality of PUCCH groups, and selecting a second UL channel from a second PUCCH group of the PUCCHs having the plurality of PUCCH groups; determining whether a first service priority S-pri value of the first UL channel is higher than a second S-pri value of the second UL channel; Giving a higher transmission priority to the UL channel having the highest S-pri value among the first UL channel and the second UL channel; reducing a transmitter output power associated with the higher priority UL channel by increasing a P-MPR associated with the higher priority UL channel; Determine electromagnetic power density exposure levels; determining whether the electromagnetic power density exposure level is equal to or lower than a predetermined maximum permissible exposure MPE level; If the electromagnetic power density exposure level is greater than the predetermined MPE level, returning to reducing the transmitter output power; When the first S-pri value is equal to the second S-pri value, determining whether a first channel priority C-pri value of the first UL channel is higher than a second C-pri value of the second UL channel; and When the first S-pri value is equal to the second S-pri value, a higher transmission priority is given to the UL channel with the highest C-pri value among the first UL channel or the second UL channel.

27. An apparatus for wireless communication, comprising: processor; a transceiver communicatively coupled to the processor; as well as a memory communicatively coupled to the processor, wherein the processor is configured to: Determine the maximum user equipment UE output power P of the configuration for reducing the measurement UMAX The value of selecting a first UL channel from a first PUCCH group of PUCCHs having a plurality of PUCCH groups, and selecting a second UL channel from a second PUCCH group of the PUCCHs having the plurality of PUCCH groups; determining whether a first service priority S-pri value of the first UL channel is higher than a second S-pri value of the second UL channel; Giving a higher transmission priority to the UL channel having the highest S-pri value among the first UL channel and the second UL channel; reducing a transmitter output power associated with the higher priority UL channel by increasing a P-MPR associated with the higher priority UL channel; Determine electromagnetic power density exposure levels; determining whether the electromagnetic power density exposure level is equal to or lower than a predetermined maximum permissible exposure MPE level; If the electromagnetic power density exposure level is greater than the predetermined MPE level, returning to reducing the transmitter output power; When the first S-pri value is equal to the second S-pri value, determining whether a first channel priority C-pri value of the first UL channel is higher than a second C-pri value of the second UL channel; and When the first S-pri value is equal to the second S-pri value, a higher transmission priority is given to the UL channel with the highest C-pri value among the first UL channel or the second UL channel.

28. A method of wireless communication using inter-band carrier aggregation at a user equipment (UE), comprising: Determine the maximum user equipment UE output power P of the configuration for reducing the measurement UMAX The value of selecting a first UL channel from a first PUCCH group of PUCCHs having a plurality of PUCCH groups, and selecting a second UL channel from a second PUCCH group of the PUCCHs having the plurality of PUCCH groups; determining whether a first channel priority C-pri value of the first UL channel is higher than a second C-pri value of the second UL channel; Giving a higher transmission priority to the UL channel having the highest C-pri value among the first UL channel and the second UL channel; reducing a transmitter output power associated with a higher priority UL channel by increasing a power management maximum power reduction, P-MPR, associated with the higher priority UL channel; Determine electromagnetic power density exposure levels; determining whether the electromagnetic power density exposure level is equal to or lower than a predetermined maximum permissible exposure (MPE) level; and If the electromagnetic power density exposure level is greater than the predetermined MPE level, returning to reducing the transmitter output power.

29. The method of wireless communication according to claim 28, further comprising: receiving an instruction from a scheduling entity, wherein the instruction causes the user equipment UE to determine to reduce the P UMAX The value of .

30. The method of claim 28, further comprising: A priority order is received from a scheduling entity.

31. The method of claim 28, further comprising: Detection requires reducing the P UMAX The configuration of the user equipment UE of the value.

32. The method of claim 31 further comprising: detecting an indication that the user equipment UE is close to a surface as a need to reduce the P UMAX The configuration of the user equipment UE of the value.

33. The method of claim 32, wherein the surface is a human head or a human hand.

34. The method of claim 28, further comprising: When the first channel priority C-pri value of the first UL channel is equal to the second C-pri value of the second UL channel, determining whether a first service priority S-pri value of the first UL channel is higher than a second S-pri value of the second UL channel; and When the first C-pri value is equal to the second C-pri value, a higher transmission priority is given to the UL channel having the highest S-pri value among the first UL channel or the second UL channel.

35. An apparatus for wireless communication, comprising: Maximum user equipment UE output power P for determining configuration to reduce measurement UMAX The value of the component; means for selecting a first UL channel from a first PUCCH group of PUCCHs having a plurality of PUCCH groups and selecting a second UL channel from a second PUCCH group of the PUCCHs having the plurality of PUCCH groups; means for determining whether a first channel priority C-pri value of the first UL channel is higher than a second C-pri value of the second UL channel; a means for giving a higher transmission priority to a UL channel having a highest S-pri value among the first UL channel or the second UL channel; means for reducing a transmitter output power associated with a higher priority UL channel by increasing a P-MPR associated with the higher priority UL channel; Components used to determine electromagnetic power density exposure levels; A component for determining whether the electromagnetic power density exposure level is equal to or lower than a predetermined maximum permissible exposure MPE level; as well as Means for returning said transmitter output power to reduction if said electromagnetic power density exposure level is greater than said predetermined MPE level.

36. A non-transitory computer-readable medium storing computer executable code, comprising code for causing a computer to: Determine the maximum user equipment UE output power P of the configuration for reducing the measurement UMAX The value of selecting a first UL channel from a first PUCCH group of PUCCHs having a plurality of PUCCH groups, and selecting a second UL channel from a second PUCCH group of the PUCCHs having the plurality of PUCCH groups; determining whether a first channel priority C-pri value of the first UL channel is higher than a second C-pri value of the second UL channel; Giving a higher transmission priority to the UL channel having the highest S-pri value among the first UL channel and the second UL channel; reducing a transmitter output power associated with the higher priority UL channel by increasing a P-MPR associated with the higher priority UL channel; Determine electromagnetic power density exposure levels; determining whether the electromagnetic power density exposure level is equal to or lower than a predetermined maximum permissible exposure (MPE) level; and If the electromagnetic power density exposure level is greater than the predetermined MPE level, returning to reducing the transmitter output power.

37. An apparatus for wireless communication, comprising: processor; a transceiver communicatively coupled to the processor; as well as a memory communicatively coupled to the processor, wherein the processor is configured to: Determine the maximum user equipment UE output power P of the configuration for reducing the measurement UMAX The value of selecting a first UL channel from a first PUCCH group of PUCCHs having a plurality of PUCCH groups, and selecting a second UL channel from a second PUCCH group of the PUCCHs having the plurality of PUCCH groups; determining whether a first channel priority C-pri value of the first UL channel is higher than a second C-pri value of the second UL channel; Giving a higher transmission priority to the UL channel having the highest S-pri value among the first UL channel and the second UL channel; reducing a transmitter output power associated with the higher priority UL channel by increasing a P-MPR associated with the higher priority UL channel; Determine electromagnetic power density exposure levels; determining whether the electromagnetic power density exposure level is equal to or lower than a predetermined maximum permissible exposure (MPE) level; and If the electromagnetic power density exposure level is greater than the predetermined MPE level, returning to reducing the transmitter output power.

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