Techniques for detecting maximum permissible exposure (MPE) events in wireless communications

Abstract

Aspects described herein relate to detecting a maximum permitted exposure (MPE) event and / or reporting cell metrics associated with an MPE event. Cell group metrics of a plurality of cells configured in inter-band carrier aggregation (CA) may be measured. Based on the cell group metrics, an occurrence of a maximum permitted exposure (MPE) event may be detected, and / or the cell group metrics may be reported to one or more of the plurality of cells based on the detection of an occurrence of an MPE event.

Description

[0001] Priority claim

[0002] This application claims priority to PCT patent application PCT / CN2020 / 076527, entitled “Technology for Detecting Maximum Permissible Exposure (MPE) Events in Wireless Communications”, filed on February 25, 2020, which has been assigned to the assignee of this application and is hereby expressly incorporated herein by reference for all purposes. Background Art

[0003] Aspects of the present disclosure relate generally to wireless communication systems and, more particularly, to maximum permissible exposure (MPE) compliance.

[0004] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcast, etc. These systems may be multiple-access systems capable of supporting communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple-access systems include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, and single-carrier frequency division multiple access (SC-FDMA) systems.

[0005] These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate at a city, country, region, and even global level. For example, the fifth generation (5G) wireless communication technology, which may be referred to as 5G New Radio (5G NR), is envisioned to expand and support different usage scenarios and applications relative to current mobile network generations. In one aspect, 5G communication technology may include: enhanced mobile broadband to address human-centric usage scenarios for accessing multimedia content, services, and data; ultra-reliable low latency communications (URLLC), with specific specifications for latency and reliability; and massive machine type communications, which may allow for very large numbers of connected devices and the transmission of relatively small amounts of non-latency sensitive information.

[0006] Wireless communication devices such as user equipment (UE) may be forced to comply with maximum permissible exposure (MPE) to prevent exposure of radio waves to the human body. These devices may accordingly detect MPE events when the device is close to the human body and may reduce power to prevent damage caused by strong radio signals. These devices may transmit signals at specific transmission opportunities to detect MPE and may measure the signal energy received by transmitting the signal. In the event that the received signal energy or other characteristics reach a threshold, the device may detect an MPE event and may modify transmission parameters (e.g., apply power reduction) to mitigate MPE. Summary of the invention

[0007] A brief summary of one or more aspects is presented below to provide a basic understanding of these aspects. The content of the present invention is not an extensive overview of all expected aspects, and is neither intended to identify the key elements or important elements of all aspects, nor to describe the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a preface to the specific embodiments presented later.

[0008] According to one aspect, a method of wireless communication is provided. The method includes measuring a cell group metric of a plurality of cells configured in inter-band carrier aggregation (CA), detecting an occurrence of a maximum permitted exposure (MPE) event based on the cell group metric, and reporting the cell group metric to one or more cells of the plurality of cells based on detecting the occurrence of the MPE event.

[0009] In another aspect, a method for wireless communication is provided. The method includes receiving an indication of a cell group metric indicating an MPE event from a device, wherein the cell group metric corresponds to a plurality of cells configured in inter-band CA, and adjusting uplink communication of the device based on the cell group metric.

[0010] In another aspect, an apparatus for wireless communication is provided, the apparatus comprising: a transceiver; a memory configured to store instructions; and one or more processors communicatively connected to the memory and the transceiver. The one or more processors are configured to: measure a cell group metric of a plurality of cells configured in inter-band CA, detect an occurrence of an MPE event based on the cell group metric, and report the cell group metric to one or more cells in the plurality of cells based on detecting the occurrence of the MPE event.

[0011] In another aspect, an apparatus for wireless communication is provided, the apparatus comprising: a transceiver; a memory configured to store instructions; and one or more processors communicatively connected to the memory and the transceiver. The one or more processors are configured to: receive an indication of a cell group metric indicating an MPE event from a device, wherein the cell group metric corresponds to a plurality of cells configured in inter-band CA; and adjust uplink communication of the device based on the cell group metric.

[0012] On the other hand, an apparatus for wireless communication is provided, the apparatus comprising: a component for measuring cell group metrics of multiple cells configured in inter-band CA; a component for detecting the occurrence of an MPE event based on the cell group metrics; and a component for reporting the cell group metrics to one or more cells among the multiple cells based on detecting the occurrence of the MPE event.

[0013] In another aspect, an apparatus for wireless communication is provided, the apparatus comprising: a component for receiving an indication of a cell group metric indicating an MPE event from a device, wherein the cell group metric corresponds to a plurality of cells configured in inter-band CA; and a component for adjusting uplink communication of the device based on the cell group metric.

[0014] In another aspect, a computer-readable medium is provided, the computer-readable medium including code for wireless communication that can be executed by one or more processors. The code includes code for performing the following steps: measuring a cell group metric of a plurality of cells configured in inter-band CA; detecting an occurrence of an MPE event based on the cell group metric; and reporting the cell group metric to one or more cells in the plurality of cells based on detecting the occurrence of the MPE event.

[0015] In another aspect, a computer-readable medium is provided, the computer-readable medium including code for wireless communication executable by one or more processors, the code including code for receiving an indication of a cell group metric indicating an MPE event from a device, and code for adjusting uplink communication of the device based on the cell group metric, wherein the cell group metric corresponds to a plurality of cells configured in inter-band CA.

[0016] To accomplish the foregoing and related ends, one or more aspects include features fully described below and particularly pointed out in the claims. The following description and the accompanying drawings set forth in detail certain illustrative features of one or more aspects. However, these features are indicative of only some of the various ways in which the principles of the various aspects may be employed, and this description is intended to include all such aspects and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The disclosed aspects will be described below in conjunction with the accompanying drawings, which are provided to illustrate rather than limit the disclosed aspects, in which like reference numerals denote like elements, and in which:

[0018] Figure 1 An example of a wireless communication system according to various aspects of the present disclosure is shown;

[0019] Figure 2 is a block diagram illustrating an example of a UE according to various aspects of the present disclosure;

[0020] Figure 3 is a block diagram illustrating an example of a base station according to various aspects of the present disclosure;

[0021] Figure 4 is a flow chart illustrating an example of a method for detecting a maximum permissible exposure (MPE) event according to various aspects of the present disclosure;

[0022] Figure 5 is a flow chart illustrating an example of a method for receiving a report related to an MPE event according to various aspects of the present disclosure;

[0023] Figure 6 An example of a bitmap for reporting MPE event information according to various aspects of the present disclosure is shown;

[0024] Figure 7 An example of a bitmap showing different slot formats for reporting MPE information according to various aspects of the present disclosure; and

[0025] Figure 8 is a block diagram illustrating an example of a MIMO communication system including a base station and a UE according to various aspects of the present disclosure. DETAILED DESCRIPTION

[0026] Various aspects are now described with reference to the accompanying drawings. In the following description, for the purpose of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more aspects. However, it is apparent that these aspects can be practiced without these specific details.

[0027] The described features generally relate to maximum permitted exposure (MPE) provisions when multiple component carriers (CCs) are configured for a device (e.g., a user equipment (UE)). For example, multiple CCs can be configured in inter-band carrier aggregation (CA), where the device can transmit on each of the multiple CCs with one or more cells to improve wireless communication throughput, reliability, diversity, etc. In a specific example, the multiple CCs can correspond to different bandwidths (e.g., one CC at 28 gigahertz (GHz) and one CC at 39 GHz, or one CC at 28 GHz and one CC at 60 GHz, etc.). In any case, the device can consider multiple (e.g., all) configured CCs when determining whether MPE and / or an MPE event is occurring.

[0028] Various aspects described herein relate to measuring a cell group metric related to multiple cells and / or corresponding CCs when detecting the occurrence of an MPE event. In addition, for example, the device may report the cell group metric to one or more cells in the multiple cells to allow the cell to take further actions based on the detected MPE event, such as modifying the communication scheduling of the device, performing beam switching of the device, etc. In one example, the cell group metric may include a separate cell metric that is considered together for multiple cells and / or corresponding CCs (e.g., summed, averaged, considered in a function (such as a maximum value, a minimum value, etc.)).

[0029] For example, such individual cell metrics may include applied power reduction parameter values, power backoff, specified maximum transmit power, power headroom, etc. The individual values ​​may be considered together (e.g., as a sum, an average, etc.) to determine a total value of the cell group metric, which may be used to detect an MPE event and / or for reporting the cell group metric to one or more cells. In another example, the cell group metric may additionally or alternatively include a metric of a single cell (e.g., a maximum determined value, a minimum determined value, etc.). In any case, the device may detect an MPE event in inter-band CA and may report one or more parameters to one or more cells of a plurality of cells providing inter-band CA. For example, as further described herein, one or more parameters may include an indication of MPE, a group metric or an individual cell metric causing MPE, an identifier of a beam or beam measurement associated with a given cell or CC, etc. This may allow the network to detect or determine MPE and may help the network determine how to resolve MPE, which may be based on adjusting the device's uplink communications (e.g., by modifying scheduled resources, modifying the CC activated by the device, switching the device to another CC or cell, modifying the beam or antenna resources used by the device, indicating a transmit power control (TPC) command, etc.).

[0030] The following will refer to Figures 1 to 8 State the described feature in more detail.

[0031] As used in this application, the terms "component", "module", "system", etc. are intended to include computer-related entities, such as but not limited to hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component can be, but not limited to, a process, a processor, an object, an executable program, an execution thread, a program, and / or a computer running on a processor. As an illustration, both the application running on a computing device and the computing device can be a component. One or more components can reside in the process and / or thread of execution, and the component can be located on a computer and / or distributed between two or more computers. In addition, these components can be executed from various computer-readable media having various data structures stored thereon. These components can communicate (for example, according to a signal with one or more data packets, such as data from a component interacting with another component) by local and / or remote processes in a local system, a distributed system, and / or communicate with other systems across a network (such as the Internet) by a signal.

[0032] The technology described herein can be used for various wireless communication systems, such as CDMA, TDMA, FDMA, OFDMA, SC-FDMA and other systems. The terms "system" and "network" are usually used interchangeably. A CDMA system can implement wireless technologies such as CDMA2000, Universal Terrestrial Radio Access (UTRA). CDMA2000 covers IS-2000, IS-95 and IS-856 standards. IS-2000 versions 0 and A are commonly referred to as CDMA2000 1X, 1X, etc. IS-856 (TIA-856) is commonly referred to as CDMA2000 1xEV-DO, High Speed ​​Packet Data (HRPD), etc. UTRA includes Wideband CDMA (WCDMA) and other variants of CDMA. A TDMA system can implement radio technologies such as Global System for Mobile Communications (GSM). OFDMA systems can implement, for example, Ultra Mobile Broadband (UMB), Evolved UTRA (E-UTRA), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM TM Radio technologies such as LTE and UTRA. UTRA and E-UTRA are part of the Universal Mobile Telecommunications System (UMTS). 3GPP Long Term Evolution (LTE) and Advanced LTE (LTE-A) are new versions of UMTS that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in documents from an organization named "3rd Generation Partnership Project" (3GPP). CDMA 2000 and UMB are described in documents from an organization named "3rd Generation Partnership Project 2" (3GPP2). The technology described herein can be used for the above-mentioned systems and radio technologies as well as other systems and radio technologies (including cellular (e.g., LTE) communications on shared radio spectrum bands). However, for the purpose of example, the following description describes an LTE / LTE-A system, and LTE terminology is used in most of the following description, but the technology is applicable outside of LTE / LTE-A applications (e.g., to fifth generation (5G) new radio (NR) networks or other next generation communication systems).

[0033] The following description provides examples and does not limit the scope, applicability or examples set forth in the claims. Without departing from the scope of the present disclosure, the functions and arrangements of the elements discussed may be changed. Various examples may appropriately omit, replace or add various processes or components. For example, the described method may be performed in an order different from the described order, and various steps may be added, omitted or combined. In addition, the features described with respect to some examples may be combined in other examples.

[0034] Various aspects or features will be presented in terms of systems that may include several devices, components, modules, etc. It should be understood and appreciated that the various systems may include additional devices, components, modules, etc., and / or may not include all of the devices, components, modules, etc. discussed in conjunction with the figures. Combinations of these methods may also be used.

[0035] Figure 1 1 is a diagram illustrating an example of a wireless communication system and access network 100. The wireless communication system (also referred to as a wireless wide area network (WWAN)) may include a base station 102, a UE 104, an evolved packet core (EPC) 160, and / or a 5G core (5GC) 190. The base station 102 may include a macro cell (a high-power cellular base station) and / or a small cell (a low-power cellular base station). The macro cell may include a base station. The small cell may include a femto cell, a pico cell, and a micro cell. In one example, as further described herein, the base station 102 may also include a gNB 180. In one example, according to aspects described herein, some nodes of the wireless communication system may have a modem 240 and a communication component 242 for detecting and / or reporting information related to MPE events when inter-band CA is configured. In addition, according to aspects described herein, some nodes may have a modem 340 and a scheduling component 342 for configuring and / or communicating using inter-band CA. Although UE 104 is shown as having a modem 240 and a communication component 242, and base station 102 / gNB 180 is shown as having a modem 340 and a scheduling component 342, this is an illustrative example, and substantially any node or node type may include a modem 240 and a communication component 242 and / or a modem 340 and a scheduling component 342 to provide the corresponding functionality described herein.

[0036] Base stations 102 configured for 4G LTE (which may be collectively referred to as Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) may interface with EPC 160 via a backhaul link 132 (e.g., using an S1 interface). Base stations 102 configured for 5G NR (which may be collectively referred to as Next Generation RAN (NG-RAN)) may interface with 5GC 190 via a backhaul link 184. Among other functions, base stations 102 may perform one or more of the following functions: transmission of user data, radio channel encryption and decryption, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity), inter-cell interference coordination, connection establishment and release, load balancing, distribution for non-access stratum (NAS) messages, NAS node selection, synchronization, radio access network (RAN) sharing, multimedia broadcast multicast service (MBMS), subscriber and device tracking, RAN information management (RIM), paging, positioning, and delivery of warning messages. The base stations 102 may communicate with each other via a backhaul link 134 (e.g., using an X2 interface) directly or indirectly (e.g., via EPC 160 or 5GC 190). The backhaul link 134 may be wired or wireless.

[0037] The base station 102 can communicate wirelessly with one or more UEs 104. Each of the base stations 102 can provide communication coverage for a respective geographic coverage area 110. There may be overlapping geographic coverage areas 110. For example, a small cell 102' can have a coverage area 110' that overlaps with the coverage area 110 of one or more macro base stations 102. A network including both small cells and macro cells can be referred to as a heterogeneous network. A heterogeneous network can also include a home evolved node B (eNB) (HeNB), which can provide services to a restricted group called a closed subscriber group (CSG). The communication link 120 between the base station 102 and the UE 104 can include an uplink (UL) (also referred to as a reverse link) transmission from the UE 104 to the base station 102 and / or a downlink (DL) (also referred to as a forward link) transmission from the base station 102 to the UE 104. The communication link 120 can use multiple input multiple output (MIMO) antenna technology, including spatial multiplexing, beamforming and / or transmit diversity. The communication link can be through one or more carriers. The base station 102 / UE 104 may use up to Y MHz (e.g., 5, 10, 15, 20, 100, 400, etc. MHz) of bandwidth per carrier, which are allocated in a carrier aggregation of up to Yx MHz (x component carriers) for transmission in the DL and / or UL directions. These carriers may be adjacent to each other, or may not be adjacent to each other. The allocation of carriers may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated for DL ​​than for UL). The component carrier may include a primary component carrier and one or more secondary component carriers. The primary component carrier may be referred to as a primary cell (PCell), and the secondary component carrier may be referred to as a secondary cell (SCell).

[0038] In another example, some UEs 104 may communicate with each other using a device-to-device (D2D) communication link 158. The D2D communication link 158 may use DL / UL WWAN spectrum. The D2D communication link 158 may use one or more sidelink channels, such as a physical sidelink broadcast channel (PSBCH), a physical sidelink discovery channel (PSDCH), a physical sidelink shared channel (PSSCH), and a physical sidelink control channel (PSCCH). The D2D communication may be through various wireless D2D communication systems, such as FlashLinQ, WiMedia, Bluetooth, ZigBee, Wi-Fi based on IEEE 802.11 standards, LTE, or NR.

[0039] The wireless communication system may also include a Wi-Fi access point (AP) 150 that communicates with a Wi-Fi station (STA) 152 in the 5 GHz unlicensed spectrum via a communication link 154. When communicating in the unlicensed spectrum, the STA 152 / AP 150 may perform a clear channel assessment (CCA) prior to communication to determine whether the channel is available.

[0040] The small cell 102' can operate in a licensed and / or unlicensed spectrum. When operating in an unlicensed spectrum, the small cell 102' can employ NR and use the same 5 GHz unlicensed spectrum used by the Wi-Fi AP 150. The small cell 102' using NR in the unlicensed spectrum can improve the coverage of the access network and / or increase the capacity of the access network.

[0041] Whether a small cell 102' or a large cell (e.g., a macro base station), the base station 102 can include an eNB, a gNode B (gNB), or other types of base stations. Some base stations (e.g., gNB 180) can communicate with UE 104 in traditional sub 6GHz spectrum, millimeter wave (mmW) frequencies, and / or near mmW frequencies. When the gNB 180 operates at mmW or near mmW frequencies, the gNB 180 can be referred to as a mmW base station. Extremely high frequency (EHF) is part of the RF in the electromagnetic spectrum. EHF ranges from 30GHz to 300GHz with wavelengths between 1 mm and 10 mm. Radio waves in this band can be referred to as millimeter waves. Near mmW can extend down to 3GHz frequencies with 100 mm wavelengths. The super high frequency (SHF) band extends between 3GHz and 30GHz and is also known as centimeter waves. Communications using mmW / near mmW radio frequency bands have extremely high path loss and short range. The mmW base station 180 can utilize beamforming 182 with the UE 104 to compensate for the extremely high path loss and short range. The base station 102 mentioned here can include a gNB 180.

[0042] The EPC 160 may include a mobility management entity (MME) 162, other MMEs 164, a serving gateway 166, a multimedia broadcast multicast service (MBMS) gateway 168, a broadcast multicast service center (BM-SC) 170, and a packet data network (PDN) gateway 172. The MME 162 may communicate with a home subscriber server (HSS) 174. The MME 162 is a control node that handles signaling between the UE 104 and the EPC 160. Typically, the MME 162 provides bearer and connection management. All user Internet Protocol (IP) packets are transmitted through the serving gateway 166, which itself is connected to the PDN gateway 172. The PDN gateway 172 provides UE IP address allocation and other functions. The PDN gateway 172 and the BM-SC 170 are connected to IP services 176. The IP services 176 may include the Internet, an intranet, an IP multimedia subsystem (IMS), a PS streaming service, and / or other IP services. The BM-SC 170 may provide functionality for MBMS user service provisioning and delivery. The BM-SC 170 may serve as an entry point for content provider MBMS transmissions, may be used to authorize and initiate MBMS bearer services within a public land mobile network (PLMN), and may be used to schedule MBMS transmissions. The MBMS Gateway 168 may be used to distribute MBMS services to base stations 102 belonging to a multicast broadcast single frequency network (MBSFN) area that broadcasts specific services, and may be responsible for session management (start / stop) and collecting charging information related to eMBMS.

[0043] 5GC 190 may include an access and mobility management function (AMF) 192, other AMFs 193, a session management function (SMF) 194, and a user plane function (UPF) 195. AMF 192 may communicate with unified data management (UDM) 196. AMF 192 may be a control node that handles signaling between UE 104 and 5GC 190. Typically, AMF 192 may provide QoS flow and session management. User Internet Protocol (IP) packets (e.g., from one or more UEs 104) may be transmitted through UPF 195. UPF 195 may provide UE IP address allocation and other functions for one or more UEs. UPF 195 is connected to IP services 197. IP services 197 may include the Internet, an intranet, an IP multimedia subsystem (IMS), a PS streaming service, and / or other IP services.

[0044] A base station may also be referred to as a gNB, a Node B, an evolved Node B (eNB), an access point, a basic transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS), an extended service set (ESS), a transmit receive point (TRP), or some other suitable term. Base station 102 provides an access point to EPC 160 or 5GC 190 for UE 104. Examples of UE 104 include a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a personal digital assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., an MP3 player), a camera, a game console, a tablet computer, a smart device, a wearable device, a vehicle, an electric meter, a gas pump, a large or small kitchen appliance, a healthcare device, an implant, a sensor / actuator, a display, or any other similar functional device. Some of UE 104 may be referred to as IoT devices (e.g., a parking meter, a gas pump, a toaster, a vehicle, a heart monitor, etc.). IoT UEs may include machine type communication (MTC) / enhanced MTC (eMTC, also known as Category (CAT)-M, CAT M1) UEs, NB-IoT (also known as CATNB1) UEs, and other types of UEs. In the present disclosure, eMTC and NB-IoT may refer to future technologies that may be developed from or based on these technologies. For example, eMTC may include FeMTC (further eMTC), eFeMTC (enhanced further eMTC), mMTC (massive MTC), etc., and NB-IoT may include eNB-IoT (enhanced NB-IoT), FeNB-IoT (further enhanced NB-IoT), etc. UE 104 may also be referred to as a station, a mobile station, a subscriber 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 subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a mobile phone, a user agent, a mobile client, a client, or some other suitable terminology.

[0045] In one example, the communication component 242 can detect an MPE event based on multiple CCs configured in inter-band CA by determining a cell group metric that takes into account the sum or combination of metrics associated with multiple CCs or related cells. In a specific example, the communication component 242 can detect MPE based on the sum of power reduction parameter values ​​configured for multiple CCs or corresponding cells. In addition, for example, the communication component 242 can report the cell group metric to one or more cells based on the detection of an MPE event or other situation. One or more cells can configure communications with the UE 104 based on the cell group metric. As further described herein, in this regard, considering the cell group metric can help improve MPE event detection when configuring multiple CCs, and / or can allow the cell to adjust the communication parameters of the UE 104 based on the cell group metric.

[0046] Now turn to Figures 2 to 8 , various aspects are described with reference to one or more components and one or more methods that can perform the actions or operations described herein, where aspects in dashed lines may be optional. Figures 4 to 5 The operations described in the present invention are presented in a particular order and / or performed by example components, but it should be understood that the order of actions and the components performing the actions may vary depending on the implementation. In addition, it should be understood that the following actions, functions, and / or components described may be performed by a specially programmed processor, a processor executing specially programmed software or a computer-readable medium, or by any other combination of hardware components and / or software components capable of performing the described actions or functions.

[0047] Reference Figure 2 , one example of an implementation of the UE 104 may include various components, some of which have been described above and are further described herein, including components that may operate in conjunction with a modem 240 and / or a communication component 242 (such as one or more processors 212 and memory 216 and a transceiver 202 in communication via one or more buses 244) to detect and / or report information related to MPE events when inter-band CA is configured according to aspects described herein.

[0048] In one aspect, the one or more processors 212 may include the modem 240 and / or may be part of the modem 240 using one or more modem processors. Thus, various functions associated with the communication component 242 may be included in the modem 240 and / or the processor 212, and in one aspect, may be performed by a single processor, while in other aspects, different functions may be performed by a combination of two or more different processors. For example, in one aspect, the one or more processors 212 may include any one or any combination of a modem processor, a baseband processor, a digital signal processor, a transmit processor, a receiver processor, or a transceiver processor associated with the transceiver 202. In other aspects, some features of the one or more processors 212 and / or the modem 240 associated with the communication component 242 may be performed by the transceiver 202.

[0049] In addition, the memory 216 can be configured to store data used herein and / or local versions of the applications 275 or the communication component 242 and / or one or more subcomponents thereof executed by the at least one processor 212. The memory 216 can include any type of computer-readable medium usable by a computer or the at least one processor 212, such as random access memory (RAM), read-only memory (ROM), tape, disk, optical disk, volatile memory, non-volatile memory, and any combination thereof. In one aspect, for example, when the UE 104 operates the at least one processor 212 to execute the communication component 242 and / or one or more subcomponents thereof, the memory 216 can be a non-transitory computer-readable storage medium that stores one or more computer-executable codes defining the communication component 242 and / or one or more subcomponents thereof and / or data associated therewith.

[0050] The transceiver 202 may include at least one receiver 206 and at least one transmitter 208. The receiver 206 may include hardware, firmware, and / or software code executable by a processor to receive data, the code including instructions and stored in a memory (e.g., a computer-readable medium). The receiver 206 may be, for example, a radio frequency (RF) receiver. In one aspect, the receiver 206 may receive a signal transmitted by at least one base station 102. In addition, the receiver 206 may process such received signals and may also obtain measurements of the signal, such as, but not limited to, Ec / Io, signal-to-noise ratio (SNR), reference signal received power (RSRP), received signal strength indicator (RSSI), etc. The transmitter 208 may include hardware, firmware, and / or software code executable by a processor to transmit data, the code including instructions and stored in a memory (e.g., a computer-readable medium). Suitable examples of the transmitter 208 may include, but are not limited to, an RF transmitter.

[0051] Additionally, in one aspect, the UE 104 may include an RF front end 288 that may communicate with the one or more antennas 265 and the transceiver 202 to receive and transmit radio transmissions, such as wireless communications transmitted by at least one base station 102 or wireless transmissions transmitted by the UE 104. The RF front end 288 may be connected to the one or more antennas 265 and may include one or more low noise amplifiers (LNAs) 290, one or more switches 292, one or more power amplifiers (PAs) 298, and one or more filters 296 to transmit and receive RF signals.

[0052] In one aspect, the LNA 290 can amplify the received signal at a desired output level. In one aspect, each LNA 290 can have a specified minimum gain value and a maximum gain value. In one aspect, the RF front end 288 can use one or more switches 292 to select a particular LNA 290 and its specified gain value based on the desired gain value for a particular application.

[0053] In addition, for example, the RF front end 288 can use one or more PAs 298 to amplify the signal of the RF output at a desired output power level. In one aspect, each PA 298 can have a specified minimum gain value and a maximum gain value. In one aspect, the RF front end 288 can use one or more switches 292 to select a specific PA 298 and its specified gain value based on the desired gain value of a specific application.

[0054] In addition, for example, the RF front end 288 can use one or more filters 296 to filter the received signal to obtain an input RF signal. Similarly, in one aspect, for example, a corresponding filter 296 can be used to filter the output from the corresponding PA 298 to generate an output signal for transmission. In one aspect, each filter 296 can be connected to a specific LNA 290 and / or PA 298. In one aspect, based on the configuration specified by the transceiver 202 and / or the processor 212, the RF front end 288 can use one or more switches 292 to select a transmit path or a receive path using a specified filter 296, LNA 290, and / or PA 298.

[0055] As such, the transceiver 202 may be configured to transmit and receive wireless signals via the RF front end 288 through the one or more antennas 265. In one aspect, the transceiver may be tuned to operate at a specified frequency, e.g., so that the UE 104 may communicate with one or more base stations 102 or one or more cells associated with the one or more base stations 102. For example, in one aspect, the modem 240 may configure the transceiver 202 to operate at a specified frequency and power level based on the UE configuration of the UE 104 and the communication protocol used by the modem 240.

[0056] In one aspect, modem 240 can be a multi-band multi-mode modem that can process digital data and communicate with transceiver 202 so that digital data is sent and received using transceiver 202. In one aspect, modem 240 can be multi-band and configured to support multiple frequency bands for a specific communication protocol. In one aspect, modem 240 can be multi-mode and configured to support multiple operating networks and communication protocols. In one aspect, modem 240 can control one or more components (e.g., RF front end 288, transceiver 202) of UE 104 to enable transmission and / or reception of signals from the network based on a specified modem configuration. In one aspect, modem configuration can be based on the mode of the modem and the frequency band in use. In another aspect, modem configuration can be based on UE configuration information associated with UE 104 provided by the network during cell selection and / or cell reselection.

[0057] In one aspect, according to aspects described herein, the communication component 242 may optionally include a metric determination component 252 and / or an MPE component 254, wherein the metric determination component 252 is used to determine or calculate a cell group metric related to an MPE event, and the MPE component 254 is used to detect MPE events based on the cell group metric, report MPE events and / or cell group metrics, etc.

[0058] In one aspect, the one or more processors 212 may correspond to a Figure 8 Similarly, the memory 216 may correspond to the one or more processors described in conjunction with the UE. Figure 8 The memory described by the UE in .

[0059] Reference Figure 3, an example of an implementation of a base station 102 (e.g., base station 102 and / or gNB 180 as described above) may include various components, some of which have been described above, but also include components that can operate in conjunction with a modem 340 and a scheduling component 342 (such as, one or more processors 312 and memory 316 and a transceiver 302 that communicate via one or more buses 344) to configure and / or communicate using inter-band CA in accordance with aspects described herein.

[0060] As described above, the transceiver 302, receiver 306, transmitter 308, one or more processors 312, memory 316, application 375, bus 344, RF front end 388, LNA 390, switch 392, filter 396, PA 398 and one or more antennas 365 can be the same as or similar to the corresponding components of UE 104, but configured or programmed for base station operation as opposed to UE operation.

[0061] In one aspect, scheduling component 342 can optionally include a metric processing component 352 for receiving cell group metrics and processing the cell group metrics (eg, adjusting communications with UE 104) according to aspects described herein.

[0062] In one aspect, the one or more processors 312 may correspond to a Figure 8 Similarly, the memory 316 may correspond to the one or more processors described in the base station in the embodiment of the present invention. Figure 8 The memory described by the base station in.

[0063] Figure 4 A flow chart showing an example of a method 400 for detecting and / or reporting information related to an MPE event. In one example, UE 104 may use Figure 1 and Figure 2 One or more components described in the method 400 may be used to perform the functions described in the method 400.

[0064] In the method 400, at block 402, a cell group metric of a plurality of cells or a plurality of CCs configured in inter-band CA may be measured. In one aspect, the metric determination component 252, for example, in combination with one or more processors 212, memory 216, transceiver 202, communication component 242, etc., may measure a cell group metric of a plurality of cells or a plurality of CCs configured in inter-band CA. For example, the metric determination component 252 may measure a cell group metric as a metric representing a plurality of cells or a plurality of CCs configured in inter-band CA. The cell group metric may include a metric that is a function of cell metrics of all cells or all CCs, and / or a function of cell metrics of a cell or CC in which at least the UE 104 is configured to send uplink communications. For example, the cell group metric may include a sum of cell metrics of a cell or CC, a maximum cell group metric or a minimum cell group metric of a cell or CC, an average of cell group metrics of a cell or CC, a single value of cell group metrics of one or more cells or CCs, etc.

[0065] In a specific example, the metric determination component 252 can measure the cell group metric as a total maximum power reduction (MPR) parameter value, which is the sum of the MPR parameter values ​​configured for each cell or CC in multiple cells or multiple CCs providing inter-band CA. For example, each cell can configure an MPR parameter value for the UE 104 to apply power reduction in various scenarios of communicating with the cell or communicating through one or more corresponding CCs. Examples of MPR parameter values ​​used in the fifth generation (5G) new radio (NR) are defined in the third generation partnership project (3GPP) technical specification (TS) 38.101-2, as described in sections 6.2A.1, 6.2A.2, 6.2A.3 and 6.2.4, and examples of the MPR parameter values ​​can include MPR, additional MPR (A-MPR), power management MPR (P-MPR), etc.

[0066] For example, the total configured power P in the transmission opportunity CMAX It can be the sum of the configured powers of carriers f of serving cell c with non-zero licensed transmission power in the corresponding reference point. As defined for 5G NR, the total configured UE maximum output power PCMAX can be set so that the corresponding measured total peak effective isotropic radiated power (EIRP) PUMAX is within the following range:

[0067] PPowerclass–MAX(MAX(MPR,A_MPR),P-MPR)–MAX{T(MAX(MPR,A_MPR)),T(P-MPR)}≤PUMAX≤EIRPmax

[0068] Where PPowerclass represents the UE power class as specified in subclause 6.2A.1, EIRPmax represents the applicable maximum EIRP as specified in subclause 6.2A.1, MPR is as specified in subclause 6.2A.2, A-MPR is as specified in subclause 6.2A.3, P-MPR is the power management term for the UE as specified in 6.2.4, and TRPmax represents the maximum total radiated power (TRP) for the UE power class as specified in subclause 6.2A.1. For each carrier f(i=1...n) and serving cell c(j=1...m), PUMAX is defined as 10*log10(∑pUMAX,fIi),c(j)), where pUMAX,fIi),c(j) is the linear value of PUMAX,fIi),c(j).

[0069] In one example, for multiple CCs and / or multiple cells, the metric determination component 252 may measure the cell group metric as a total P-MPR=sum(P-MPRfi,cj), where P-MPRfi,cj is the P-MPR on carrier fi of cell cj. For example, measuring the total P-MPR across multiple cells and / or multiple CCs may more accurately represent the P-MPR metric used to detect an MPE event. In addition, the P-MPR may be beam-specific, so that the metric determination component 252 determines the total P-MPR for a specific beam or a specific beam set used on each cell and / or CC. For example, a specific beam or a specific beam set may be determined by a cell and used for beamforming when a specific signal (such as a reference signal) is sent through a CC, and the reference signal may be measured for determining the P-MPR or other metrics. In one example, when the total P-MPR is determined to reach a threshold, the metric determination component 252 may detect an MPE event, and / or may report the cell group metric to one or more cells. The threshold value may be prefixed with a default value, and the prefix used here may refer to a threshold value configured in the memory 216 based on instructions implemented according to a radio access technology (RAT) specification (such as 5G NR), and the threshold value need not be received in the network configuration. However, in other examples, the threshold value may be additionally or alternatively configured semi-statically by radio resource control (RRC) signaling. For example, when the total P-MPR is greater than a threshold value, an MPE event may be detected and announced. In other examples, the metric determination component 252 may measure the cell group metric as an average P-MPR, a minimum P-MPR, or a maximum P-MPR, etc. in multiple cells or multiple CCs, and based on comparing the average P-MPR, the minimum P-MPR, or the maximum P-MPR, etc. with one or more thresholds, an MPE event may be detected, and / or the cell group metric may be reported to one or more cells. For example, when the average P-MPR is greater than a threshold value, an MPE event may be detected and announced.

[0070] In another example, the metric determining component 252 can measure the cell group metric as a total power backoff across cells and / or corresponding CCs. For example, the metric determining component 252 can measure the total power backoff based on the sum of the required or otherwise specified transmit powers on the cells or corresponding CCs. In a specific example, the metric determining component 252 can measure the total power backoff according to the following equation:

[0071] PCMAX(i)–sum(Pfi,cj,(i)), where Pfi,cj,(i) is the required transmit power on carrier fi of cell cj.

[0072] In one example, the metric determination component 252 can detect an MPE event when the total power backoff is determined to reach a threshold, and / or the cell group metric can be reported to one or more cells. The threshold can be a prefix, or configured by RRC signaling. For example, when the total power backoff is greater than a threshold, an MPE event can be detected and announced. In other examples, the metric determination component 252 can measure the cell group metric as an average power backoff, a minimum power backoff, or a maximum power backoff in multiple cells or multiple CCs, etc., based on comparing the average power backoff, the minimum power backoff, or the maximum power backoff, etc. with one or more thresholds, an MPE event can be detected, and / or the cell group metric can be reported to one or more cells. For example, when the average power backoff is greater than a threshold, an MPE event can be detected and announced.

[0073] In another example, the metric determination component 252 may measure the cell group metric as a configured transmit power at time i. For example, time i may correspond to a division of time resources, such as an orthogonal frequency division multiplexing (OFDM) symbol, a single carrier frequency division multiplexing (SC-FDM) symbol, a time slot of multiple symbols, a transmission time interval (TTI), etc. In addition, the transmit power configured at time i may correspond to the maximum transmit power PCMAX(i) configured at time i. In one example, when the total configured transmit power is determined to not reach a threshold, the metric determination component 252 may detect an MPE event, and / or may report the cell group metric to one or more cells. In other examples, the metric determination component 252 may measure the cell group metric as an average configured transmit power, a minimum configured transmit power, or a maximum configured transmit power, etc. in multiple cells or CCs, and based on comparing the average configured transmit power, the minimum configured transmit power, the maximum configured transmit power, etc. with one or more thresholds, an MPE event may be detected, and / or the cell group metric may be reported to one or more cells.

[0074] In another example, the metric determination component 252 may measure or determine the cell group metric as a plurality of individual cell metrics, the plurality of individual cell metrics indicating cell metrics of one or more cells and / or CCs configured in the CA. For example, the metric determination component 252 may determine the plurality of individual cell metrics as a beam-specific P-MPR for each cell and / or CC, a beam-specific duty cycle for each cell and / or CC, etc., and the metric determination component 252 may measure or determine the beam-specific P-MPR for each cell and / or CC, the beam-specific duty cycle for each cell and / or CC, etc. based on a reference signal or other signal sent by the cell and / or on the CC using a specific beam. In one example, based on comparing one or each of the plurality of individual cell metrics with one or more thresholds, the metric determination component 252 may detect an MPE event, and / or may report the cell group metric to one or more cells. In addition, in one example, the UE 104 may detect the MPR based on a portion of the plurality of individual cell metrics (e.g., cell metrics determined to have reached or not reached one or more thresholds). In another example, as further described herein, UE 104 can report a portion of multiple individual cell metrics to one or more cells.

[0075] In another example, the metric determination component 252 can measure the cell group metric as the total power headroom for each configuration in multiple cells and / or CCs. For example, when considering the transmit power used by UE 104 when transmitting in a cell or on a CC, the power headroom of a cell or CC can refer to the amount of power available. The power headroom can be based on a real power headroom value measured for transmitting actual communications on an uplink channel, or a virtual power headroom value associated with a virtual transmission on an uplink channel. In one example, when the total power headroom is determined to not reach a threshold, the metric determination component 252 can detect an MPE event, and / or can report a cell group metric to one or more cells. In other examples, the metric determination component 252 can measure the cell group metric as an average configured transmit power, a minimum configured transmit power, or a maximum configured transmit power, etc. in multiple cells or CCs, based on comparing the average configured transmit power, the minimum configured transmit power, or the maximum configured transmit power, etc. with one or more thresholds, an MPE event can be detected, and / or a cell group metric can be reported to one or more cells. In yet another example, metric determining component 252 can determine the total power headroom based on considering actual power headrooms of one or more cells or CCs and virtual power headrooms of one or more other cells or CCs.

[0076] In method 400, at block 404, the occurrence of an MPE event may be detected based on a cell group metric. In one aspect, the MPE component 254, for example, in combination with one or more processors 212, memory 216, transceiver 202, communication component 242, etc., may detect the occurrence of an MPE event based on a cell group metric. For example, the MPE component 254 may detect an MPE event based on comparing the cell group metric with a threshold. The threshold may be a prefix or configured by RRC signaling. In one example, an MPE event may be detected when the cell group metric is greater than a threshold. In another example, an MPE event may be detected when the cell group metric is less than a threshold. Various examples are described above with reference to block 402.

[0077] In method 400, at block 406, cell group metrics may be reported to one or more cells in a plurality of cells based on the detection of the occurrence of an MPE event. In one aspect, the MPE component 254, for example in combination with one or more processors 212, memory 216, transceiver 202, communication component 242, etc., may report cell group metrics to one or more cells in a plurality of cells based on the detection of the occurrence of an MPE event. For example, the MPE component 254 may report cell group metrics to cells having valid uplink transmissions in a time opportunity corresponding to a reporting opportunity. For example, as described herein, a time opportunity may include one or more symbols or a time slot of one or more symbols, and the reporting opportunity may be specified by one or more cells for UE 104 to report cell group metrics, beam identifiers, etc. The cell with valid uplink transmission may be a cell that the MPE component 254 determines has been configured or indicated with a valid uplink symbol in a time slot format. The MPE component 254 may report cell group metrics to these cells, but may not report to other cells that may be configured in CA. In addition, for example, the MPE component 254 can report the cell group metrics in a medium access control (MAC) control element (CE), report the uplink report in the uplink control information (UCI), etc. In one example, in this regard, reporting the cell group metrics can allow the cell to configure the uplink transmission of the UE 104 based on the cell group metrics.

[0078] When reporting the cell group metric at block 406, optionally, at block 408, at least one of a beam identifier, a spatial reference signal (RS) identifier, or an uplink resource identifier may be reported along with the cell group metric. In one aspect, the MPE component 254, for example, in conjunction with one or more processors 212, memory 216, transceiver 202, communication component 242, etc., may report at least one of a beam identifier, a spatial RS identifier, or an uplink resource identifier along with the cell group metric. For example, this may include a beam identifier, a spatial RS identifier, or an uplink resource identifier corresponding to one or more cells receiving the report, which may help the cell determine other information in the report. For example, the beam identifier may include an uplink beam identifier, such as a scheduling request indicator (SRI) of a physical uplink shared channel (PUSCH), a physical uplink control channel (PUCCH) spatial relation identifier, a sounding reference signal (SRS) spatial relation reference signal, etc. In another example, the spatial RS identifier may include a channel state information reference signal (CSI-RS) resource identifier, a synchronization signal block (SSB) identifier, etc. In another example, the uplink resource identifier may include a PUCCH / SRS resource identifier, an SRS resource set identifier, etc. For example, in any case, the report may include some identification about the signal, and the cell group metrics may be based on these identifications. Figure 6 A specific example is shown in FIG.

[0079] Figure 6An example of a bitmap 600, 602 for reporting a report of cell group metrics is shown. The bitmap 600 includes a set of bits including a single bit indicator for indicating whether the report includes metrics for different cells (C7, C6, C5, C4, C3, C2, C1, C0). In the bitmap 600, bits C3 and C4 may be set to 1 to indicate that the report includes metrics for cells C3 and C4. The bitmap 600 also includes a cell group metric, which may be one of the values ​​described in the above example and includes a bandwidth part (BWP) identifier and beam identifier for C3 and a BWP identifier and beam identifier for C4. The UE 104 may send the report to cells C3 and C4, which may use the report based on the format to determine the cell group metric and adjust the uplink parameters of the UE 104 accordingly. The bitmap 602 is another format for a report including separate cell metrics. For example, bitmap 602 includes cell group metrics as separate cell group metric sets, which are shown as beam-specific metrics C3 and beam-specific metrics C4, followed by BWP identifiers and beam identifiers of C3 and C4, respectively. UE 104 can send the report to cells C3 and C4, which can use the report based on the format to determine individual cell metrics for themselves and / or multiple cells and adjust uplink parameters of UE 104 accordingly. In one example, the cell can determine the beam-specific metrics for each cell, and can calculate the total, average, maximum or minimum value, etc. as described above to determine the adjusted value of uplink communication considering all metrics.

[0080] In the method 400, optionally, in block 410, one or more cells to which the cell group metric is reported may be determined as cells with configured uplink symbols. In one aspect, the MPE component 254, for example in combination with one or more processors 212, memory 216, transceiver 202, communication component 242, etc., may determine the one or more cells to which the cell group metric is reported as cells with configured uplink symbols. As described, the MPE component 254 may determine which configured cells or CCs have uplink opportunities (e.g., uplink symbols) in the timing when the UE 104 is reporting the cell group metric report, and the configured cells or CCs may not include all cells or CCs configured in the CA for the UE 104. In one example, each cell may be configured with a slot format that indicates whether the symbols in the slot are used for downlink communication (D), uplink communication (U), or flexibility (F) for downlink or uplink communication. For example, based on the slot format, the MPE component 254 (or more generally, the communication component 242) can determine whether a given symbol is configured for uplink communications for a given cell or CC. Figure 7 A specific example is shown in FIG.

[0081] Figure 7 An example of a slot format and corresponding bitmap 700, 702 for reporting cell group metrics is shown. In the slot format and corresponding bitmap 700, the slot format indicates the third symbol of cell 0 as uplink (and using beam b11), and the third symbol of cell 1 as flexible. In this example, the MPE component 254 can generate and send a report for cell 0 in the third symbol without sending a report for cell 1. In this example, in the corresponding bitmap, for cell 0, bit C0 is set to 1, the bitmap also includes the cell group metric, and includes a BWP identifier and a beam identifier for C0, and the cell group metric can be one of the values ​​described in the above examples. In addition, in one example, the beam of cell 0 can be switched to beam 12 in the next symbol, which can be based on cell 0 receiving the report and determining to use a different beam for UE 104 to mitigate MPE based at least in part on the cell group metric.

[0082] In the slot format and corresponding bitmap 702, the slot format indicates the third symbol of cell 0 as uplink (and using beam b11), and the third symbol of cell 1 as uplink (and using beam 21). In this example, the MPE component 254 can generate and send a report for cell 0 and cell 1 in the third symbol. In this example, in the corresponding bitmap, bits C0 and C1 are set to 1 for cell 0 and cell 1, and the bitmap also includes a cell group metric, and includes a BWP identifier and beam identifier for C0 and a BWP identifier and beam identifier for C1, and the cell group metric can be one of the values ​​described in the above example. In addition, in one example, the beam of cell 0 can be switched to beam 12 in the next symbol, which can be based on cell 0 receiving the report and determining to use a different beam for UE 104 to mitigate MPE based at least in part on the cell group metric. Similarly, the beam of cell 1 may switch to beam 22 in the next symbol, which may be based on cell 1 receiving the report and determining, at least in part, based on the cell group metric, to use a different beam for UE 104 to mitigate MPE.

[0083] Figure 5 A flowchart showing an example of a method 500 for receiving cell group metrics according to aspects described herein. In one example, base station 102 may use Figure 1 and Figure 3 One or more of the components described in the method 500 may be used to perform the functions described in the method 500.

[0084] In the method 500, at block 502, an indication of a cell group metric indicating an MPE event can be received from a device. In one aspect, the metric processing component 352, for example, in combination with one or more processors 312, memory 316, transceiver 302, scheduling component 342, etc., can receive an indication of a cell group metric indicating an MPE event from a device (e.g., UE 104). For example, the metric processing component 352 can receive an indication of a cell group metric in the above-described reporting format, which can include a cell group metric and an identifier associated with each cell, including a cell provided by a base station 102. In addition, for example, the cell group metric can include one or more of the parameter values ​​described above with reference to block 402, such as, total P-MPR, total power backoff, PCMAX, individual cell metrics, total power headroom, an average, minimum, or maximum of these values, etc.

[0085] In the method 500, at block 504, uplink communications of the device may be adjusted based on a cell group metric. In one aspect, for example, in conjunction with one or more processors 312, memory 316, transceiver 302, etc., the scheduling component 342 may adjust uplink communications of the device based on the cell group metric. For example, the scheduling component 342 may modify the uplink transmit power to be used by the UE 104 based on the cell group metric to avoid MPE. In another example, the scheduling component 342 may adjust the uplink resource allocation of the UE 104 based on the cell group metric to avoid MPE. In one example, the scheduling component 342 may reduce the number of uplink resources to reduce the power used by the UE 104, thereby reducing the possibility of MPS. In addition, in one example, the scheduling component 342 may perform beam switching for the UE 104 based on the cell group metric to switch the beam used for the UE 104 communication to avoid MPE. For example, using a beam that is beamformed in a direction different from the current beam can avoid MPE based on the redirected signal energy.

[0086] Figure 8 1 is a block diagram of a MIMO communication system 800 including a base station 102 and a UE 104. The MIMO communication system 800 may be shown with reference to Figure 1 The wireless communication access network 100 described herein may include various aspects of the wireless communication access network 100. The base station 102 may be a reference Figure 1Examples of various aspects of base station 102 are described. Base station 102 can be equipped with antennas 834 and 835, and UE 104 can be equipped with antennas 852 and 853. In MIMO communication system 800, base station 102 can send data through multiple communication links at the same time. Each communication link can be referred to as a "layer", and the "rank" of the communication link can indicate the number of layers used for communication. For example, in a 2x2 MIMO communication system where base station 102 sends two "layers", the rank of the communication link between base station 102 and UE 104 is 2.

[0087] At the base station 102, a transmit (Tx) processor 820 may receive data from a data source. The transmit processor 820 may process data. The transmit processor 820 may also generate control symbols or reference symbols. The transmit MIMO processor 830 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, or reference symbols (if applicable), and may provide the output symbol stream to transmit modulators / demodulators 832 and 833. Each modulator / demodulator 832 to 833 may process a respective output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator / demodulator 832 to 833 may further process the output sample stream (e.g., convert to analog, amplify, filter, and up-convert) to obtain a DL signal. In an example, the DL signals from modulators / demodulators 832 and 833 may be transmitted via antennas 834 and 835, respectively.

[0088] UE 104 may be a reference Figure 1 to Figure 2 Examples of various aspects of the UE 104 described herein. At the UE 104, the UE antennas 852 and 853 can receive DL signals from the base station 102, and the received signals can be provided to the modulators / demodulators 854 and 855, respectively. Each modulator / demodulator 854 to 855 can condition (e.g., filter, amplify, downconvert, and digitize) the respective received signals to obtain input samples. Each modulator / demodulator 854 to 855 can further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. The MIMO detector 856 can obtain received symbols from the modulator / demodulators 854 and 855, perform MIMO detection on the received symbols if applicable, and provide detected symbols. The receive (Rx) processor 858 can process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data of the UE 104 to the data output terminal, and provide decoded control information to the processor 880 or the memory 882.

[0089] In some cases, processor 880 may execute stored instructions to instantiate communication component 242 (see, e.g., Figure 1 and 2).

[0090] On the uplink (UL), at the UE 104, a transmit processor 864 may receive and process data from a data source. The transmit processor 864 may also generate reference symbols for a reference signal. Symbols from the transmit processor 864 may be precoded by a transmit MIMO processor 866, if applicable, further processed by modulators / demodulators 854 and 855 (e.g., for SC-FDMA, etc.), and transmitted to the base station 102 based on communication parameters received from the base station 102. At the base station 102, the UL signals from the UE 104 may be received by antennas 834 and 835, processed by modulators / demodulators 832 and 833, detected by a MIMO detector 836 (if applicable), and further processed by a receive processor 838. The receive processor 838 may provide decoded data to a data output and to the processor 840 or memory 842.

[0091] In some cases, processor 840 can execute stored instructions to instantiate scheduling component 342 (see, e.g., Figure 1 and 3 ).

[0092] The components of the UE 104 may be implemented individually or collectively with one or more ASICs adapted to perform some or all applicable functions in hardware. Each of the mentioned modules may be a component for performing one or more functions related to the operation of the MIMO communication system 800. Similarly, the components of the base station 102 may be implemented individually or collectively with one or more application specific integrated circuits (ASICs) adapted to perform some or all applicable functions in hardware. Each of the mentioned components may be a component for performing one or more functions related to the operation of the MIMO communication system 800.

[0093] The following aspects are merely illustrative, and aspects thereof may be combined with other embodiments or aspects of the teachings described herein without limitation.

[0094] Aspect 1 is a method for wireless communication, the method comprising: measuring cell group metrics of multiple cells configured in inter-band CA, detecting the occurrence of an MPE event based on the cell group metrics, and reporting the cell group metrics to one or more cells among the multiple cells based on the detection of the occurrence of the MPE event.

[0095] In aspect 2, the method according to aspect 1 includes: wherein the cell group metric includes a total maximum power reduction parameter value, the total maximum power reduction parameter value is the sum of the maximum power reduction parameter values ​​of each cell in the multiple cells, wherein the occurrence of the MPE event is detected based on determining that the total maximum power reduction parameter value reaches a threshold.

[0096] In aspect 3, the method according to any aspect of aspect 1 or 2 includes: wherein the cell group measurement includes a total power backoff parameter value, the total power backoff parameter value is the difference between the maximum transmit power and the transmit power allocated for transmitting communications in each of the multiple cells, wherein the occurrence of an MPE event is detected based on determining that the total power backoff parameter value reaches a threshold.

[0097] In aspect 4, the method according to any one of aspects 1 to 3 includes, wherein the cell group metric includes a maximum transmit power, and wherein the occurrence of the MPE event is detected based on determining that the maximum transmit power does not reach a threshold.

[0098] In aspect 5, the method according to any one of aspects 1 to 4 includes, wherein the cell group metric includes a metric of one of the plurality of cells, wherein the occurrence of the MPE event is detected based on the metric of the one of the plurality of cells.

[0099] In aspect 6, the method according to any one of aspects 1 to 5 includes: wherein the cell group metric includes a total power headroom value, the total power headroom value is the sum of the power headroom values ​​of communications in each of the multiple cells, wherein the occurrence of an MPE event is detected based on determining that the total power headroom value does not reach a threshold.

[0100] In aspect 7, the method according to any one of aspects 1 to 6 includes: reporting at least one of a beam identifier, a spatial reference signal identifier or an uplink resource identifier of each of the one or more cells together with the cell group metric.

[0101] In aspect 8, the method according to any one of aspects 1 to 7 comprises determining the one or more cells to which the cell group metrics are reported having configured uplink symbols.

[0102] Aspect 9 is a method for wireless communication, the method comprising: receiving an indication of a cell group metric indicating an MPE event from a device, wherein the cell group metric corresponds to a plurality of cells configured in inter-band CA; and adjusting uplink communication of the device based on the cell group metric.

[0103] In aspect 10, the method of aspect 9 includes wherein the step of adjusting uplink communications includes restricting scheduling of uplink resources for the device.

[0104] In aspect 11, the method according to any one of aspects 9 or 10 comprises: wherein the step of adjusting the uplink communication comprises: selecting a different beam for the device to use for transmitting the uplink communication.

[0105] Aspect 12 is a device for wireless communication, the device comprising: a transceiver; a memory configured to store instructions; and one or more processors communicatively connected to the memory and the transceiver, wherein the one or more processors are configured to: measure cell group metrics of multiple cells configured in inter-band CA, detect the occurrence of an MPE event based on the cell group metrics, and report the cell group metrics to one or more cells among the multiple cells based on the detection of the occurrence of the MPE event.

[0106] In aspect 13, the apparatus according to aspect 12 includes, wherein the cell group metric includes a total maximum power reduction parameter value, the total maximum power reduction parameter value is the sum of the maximum power reduction parameter values ​​of each cell in the multiple cells, and wherein the one or more processors are configured to: detect the occurrence of an MPE event based on determining that the total maximum power reduction parameter value reaches a threshold.

[0107] In aspect 14, the apparatus according to any one of aspects 12 or 13 includes, wherein the cell group metric includes a total power backoff parameter value, the total power backoff parameter value being the difference between the maximum transmit power and the transmit power allocated for transmitting communications in each of the plurality of cells, wherein the one or more processors are configured to detect the occurrence of an MPE event based on determining that the total power backoff parameter value reaches a threshold.

[0108] In aspect 15, the apparatus according to any one of aspects 12 to 14 includes, wherein the cell group metric includes a maximum transmit power, wherein the one or more processors are configured to: detect the occurrence of an MPE event based on determining that the maximum transmit power does not reach a threshold.

[0109] In aspect 16, the apparatus according to any one of aspects 12 to 15 includes, wherein the cell group metric includes a metric of one of the multiple cells, and wherein the one or more processors are configured to: detect the occurrence of an MPE event based on the metric of one of the multiple cells.

[0110] In aspect 17, the apparatus according to any one of aspects 12 to 16 includes, wherein the cell group metric includes a total power headroom value, the total power headroom value is the sum of the power headroom values ​​of communications in each of the multiple cells, and wherein the one or more processors are configured to: detect an MPE event based on determining that the total power headroom value does not reach a threshold.

[0111] In aspect 18, the apparatus according to any one of aspects 12 to 17 includes, wherein the one or more processors are further configured to: report at least one of a beam identifier, a spatial reference signal identifier, or an uplink resource identifier of each of the one or more cells together with the cell group measurement.

[0112] In aspect 19, the apparatus according to any one of aspects 12 to 18 includes, wherein the one or more processors are further configured to: determine the one or more cells having configured uplink symbols to which the cell group metrics are reported.

[0113] Aspect 20 is an apparatus for wireless communication, the apparatus comprising: a transceiver; a memory configured to store instructions; and one or more processors communicatively connected to the memory and the transceiver, wherein the one or more processors are configured to: receive an indication of a cell group metric indicating an MPE event from a device, wherein the cell group metric corresponds to a plurality of cells configured in inter-band CA; and adjust uplink communication of the apparatus based on the cell group metric.

[0114] In aspect 21, the apparatus according to aspect 20 includes, wherein the one or more processors are configured to: adjust uplink communications at least in part by restricting scheduling of uplink resources for the device.

[0115] In aspect 22, the apparatus according to any one of aspects 20 or 21 includes, wherein the one or more processors are configured to: adjust the uplink communication at least in part by selecting a different beam for the device to use for transmitting the uplink communication.

[0116] Aspect 23 is a device for wireless communication, comprising: a component for measuring cell group metrics of multiple cells configured in inter-band CA; a component for detecting the occurrence of an MPE event based on the cell group metrics; and a component for reporting the cell group metrics to one or more cells among the multiple cells based on detecting the occurrence of the MPE event.

[0117] In aspect 24, the apparatus according to aspect 23 includes, wherein the cell group metric includes a total maximum power reduction parameter value, the total maximum power reduction parameter value is the sum of the maximum power reduction parameter values ​​of each cell in the multiple cells, and wherein the component for detecting detects the occurrence of the MPE event based on determining that the total maximum power reduction parameter value reaches a threshold.

[0118] In aspect 25, the apparatus according to any one of aspects 23 or 24 includes, wherein the cell group metric includes a total power backoff parameter value, the total power backoff parameter value being the difference between the maximum transmit power and the transmit power allocated for transmitting communications in each of the plurality of cells, wherein the component for detecting detects the occurrence of an MPE event based on determining that the total power backoff parameter value reaches a threshold.

[0119] In aspect 26, the apparatus according to any one of aspects 23 to 25 includes, wherein the cell group metric includes a maximum transmit power, and wherein the means for detecting detects the occurrence of an MPE event based on determining that the maximum transmit power does not reach a threshold.

[0120] In aspect 27, the apparatus according to any one of aspects 23 to 26 includes, wherein the cell group metric comprises a metric of one of the plurality of cells, wherein the means for detecting detects the occurrence of the MPE event based on the metric of the one of the plurality of cells.

[0121] In aspect 28, the apparatus according to any one of aspects 23 to 27 includes, wherein the cell group metric includes a total power headroom value, the total power headroom value being the sum of the power headroom values ​​of communications in each of the multiple cells, and wherein the component for detecting detects the occurrence of an MPE event based on determining that the total power headroom value does not reach a threshold.

[0122] In aspect 29, the apparatus according to any one of aspects 23 to 28 comprises: means for reporting at least one of a beam identifier, a spatial reference signal identifier or an uplink resource identifier of each of the one or more cells together with the cell group metric.

[0123] In aspect 30, the apparatus according to any one of aspects 23 to 29 comprises means for determining the one or more cells to which the cell group metrics are reported having configured uplink symbols.

[0124] Aspect 31 is an apparatus for wireless communication, comprising: a component for receiving an indication of a cell group metric indicating an MPE event from a device, wherein the cell group metric corresponds to a plurality of cells configured in inter-band CA; and a component for adjusting uplink communication of the device based on the cell group metric.

[0125] In aspect 32, the apparatus of aspect 31 includes, wherein the means for adjusting adjusts uplink communications at least in part by restricting scheduling of uplink resources for the device.

[0126] In aspect 33, the apparatus according to any one of aspects 31 or 32 includes, wherein the means for adjusting adjusts the uplink communication at least in part by selecting a different beam for the device to use for transmitting the uplink communication.

[0127] Aspect 34 is a computer-readable medium comprising code capable of being executed by one or more processors for wireless communication, the code comprising code for performing the following steps: measuring cell group metrics of multiple cells configured in inter-band CA, detecting the occurrence of an MPE event based on the cell group metrics, and reporting the cell group metrics to one or more cells among the multiple cells based on detecting the occurrence of the MPE event.

[0128] In aspect 35, the computer-readable medium according to aspect 34 includes, wherein the cell group metric includes a total maximum power reduction parameter value, the total maximum power reduction parameter value is the sum of the maximum power reduction parameter values ​​of each cell in the multiple cells, and wherein the code for detecting detects the occurrence of the MPE event based on determining that the total maximum power reduction parameter value reaches a threshold.

[0129] In aspect 36, the computer-readable medium according to any one of aspects 34 or 35 includes, wherein the cell group metric includes a total power backoff parameter value, the total power backoff parameter value is the difference between the maximum transmit power and the transmit power allocated for transmitting communications in each of the multiple cells, and wherein the code for detecting detects the occurrence of an MPE event based on determining that the total power backoff parameter value reaches a threshold.

[0130] In aspect 37, the computer readable medium of any one of aspects 34 to 36 includes, wherein the cell group metric comprises a maximum transmit power, wherein the code for detecting detects the occurrence of the MPE event based on determining that the maximum transmit power does not reach a threshold.

[0131] In aspect 38, the computer-readable medium according to any one of aspects 34 to 37 includes, wherein the cell group metric includes a metric of one of the multiple cells, and wherein the code for detecting detects the occurrence of the MPE event based on the metric of the one of the multiple cells.

[0132] In aspect 39, the computer-readable medium according to any one of aspects 34 to 38 includes, wherein the cell group metric includes a total power headroom value, the total power headroom value is the sum of the power headroom values ​​of communications in each of the multiple cells, and wherein the code for detecting detects the occurrence of an MPE event based on determining that the total power headroom value does not reach a threshold.

[0133] In aspect 40, the computer-readable medium according to any one of aspects 34 to 39 includes: code for reporting at least one of a beam identifier, a spatial reference signal identifier, or an uplink resource identifier of each of the one or more cells together with the cell group metric.

[0134] In aspect 41, the computer-readable medium of any one of aspects 34 to 40 comprises code for determining the one or more cells having configured uplink symbols to which the cell group metrics are reported.

[0135] Aspect 42 is a computer-readable medium comprising code for wireless communication capable of being executed by one or more processors, the code comprising code for receiving an indication of a cell group metric indicating an MPE event from a device and adjusting uplink communication of the device based on the cell group metric, wherein the cell group metric corresponds to a plurality of cells configured in inter-band CA.

[0136] In aspect 43, the computer-readable medium of aspect 42 includes wherein the code for adjusting adjusts uplink communications at least in part by restricting scheduling of uplink resources for the device.

[0137] In aspect 44, the computer-readable medium according to any one of aspects 42 or 43 includes, wherein the code for adjusting adjusts the uplink communication at least in part by selecting a different beam for the device to use for transmitting the uplink communication.

[0138] The specific embodiments described above in conjunction with the accompanying drawings describe examples and do not represent the only examples that can be implemented or within the scope of the claims. When used in this specification, the term "example" means "used as an example, instance, or illustration", rather than "preferred" or "better than other examples". The specific embodiments include specific details for the purpose of providing an understanding of the described techniques. However, these techniques can be implemented without these specific details. In some cases, well-known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0139] Information and signals may be represented using any of a variety of different techniques and methods. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be mentioned throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, computer executable codes or instructions stored on computer readable media, or any combination thereof.

[0140] The various exemplary blocks and components described in conjunction with the disclosure herein may be implemented or executed with a specially programmed device, such as, but not limited to, a processor, a digital signal processor (DSP), an ASIC, a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. The specially programmed processor may be a microprocessor, but alternatively, the processor may be any conventional processor, controller, microcontroller, or state machine. The specially programmed processor may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in combination with a DSP core, or any other such configuration.

[0141] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored as one or more instructions or codes on or transmitted on a non-transitory computer-readable medium. Other examples and implementations are within the scope and spirit of the present disclosure and the appended claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a specially programmed processor, hardware, firmware, hardwiring, or any combination thereof. Features that implement the functions may also be physically located in various locations, including being distributed so that parts of the functions are implemented in different physical locations. In addition, as used herein, including in the claims, in a list of items beginning with "at least one"

[0142] The use of "or" in the expression "or" indicates a disjunctive list, so that, for example, a list of "at least one of A, B, or C"

[0143] It means A or B or C or AB or AC or BC or ABC (i.e. A and B and C).

[0144] Computer-readable media include computer storage media and communication media (including any media that facilitates the transfer of computer programs from one place to another). Storage media can be any available media that can be accessed by a general or special computer. As an example and not limitation, computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage or other magnetic storage devices, or can be used to carry or store desired program code components in the form of instructions or data structures and can be accessed by a general or special computer or a general or special processor. Any other medium. In addition, any connection is properly referred to as a computer-readable medium. For example, if a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) or wireless technologies such as infrared, radio and microwaves are used to transmit software from a website, server or other remote source, then coaxial cable, fiber optic cable, twisted pair, DSL or wireless technologies such as infrared, radio and microwaves are included in the definition of medium. As used herein, disks and optical disks include compact disks (CDs), laser optical disks, optical disks, digital versatile disks (DVDs), floppy disks and blue-ray disks, wherein disks usually reproduce data magnetically, while optical disks use lasers to reproduce data optically. Combinations of the above are also included within the scope of computer-readable media.

[0145] The foregoing description of the present disclosure is provided to enable those skilled in the art to make or use the present disclosure. Various modifications to the present disclosure will be apparent to those skilled in the art, and the common principles defined herein may be applied to other variations without departing from the spirit or scope of the present disclosure. In addition, although the elements of the described aspects and / or embodiments may be described or claimed in the singular, the plural number is also contemplated unless explicitly stated to be limited to the singular. In addition, unless otherwise stated, all or part of any aspect and / or embodiment may be used together with all or part of any other aspect and / or embodiment. Therefore, the present disclosure is not limited to the examples and designs described herein, but conforms to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for wireless communication, comprising: Transceiver; a memory configured to store instructions; and One or more processors connected to the memory and the transceiver, wherein the one or more processors are configured to cause the apparatus to: Measuring cell group metrics of multiple cells configured in inter-band carrier aggregation CA; Based on the cell group metric, detecting the occurrence of a maximum permissible exposure (MPE) event; and Based on detecting the occurrence of the MPE event, a cell group metric is reported to one or more cells of the plurality of cells determined to have configured uplink symbols.

2. The device according to claim 1, wherein: The cell group metric includes a total maximum power reduction parameter value, which is based on the maximum power reduction parameter value of each cell in the multiple cells, wherein the one or more processors are configured to: detect the occurrence of an MPE event based on determining that the total maximum power reduction parameter value reaches a threshold.

3. The device according to claim 1, wherein: The cell group metric comprises a total power headroom value based on a power headroom value for communications in each of the plurality of cells, wherein the one or more processors are configured to detect an occurrence of an MPE event based on determining that the total power headroom value does not reach a threshold.

4. The device according to claim 3, wherein: The power headroom value on which the total power headroom value is based comprises a virtual power headroom value for communications in each of the plurality of cells.

5. The device according to claim 1, wherein: The cell group metric includes a total power backoff parameter value, which is the difference between the maximum transmit power and the transmit power allocated for sending communications in each of the multiple cells, wherein the one or more processors are configured to detect the occurrence of an MPE event based on determining that the total power backoff parameter value reaches a threshold.

6. The device according to claim 1, wherein: The cell group metric includes a maximum transmit power, wherein the one or more processors are configured to detect the occurrence of the MPE event based on determining that the maximum transmit power does not reach a threshold.

7. The device according to claim 1, wherein: The cell group metric includes a metric of one of the plurality of cells, wherein the one or more processors are configured to detect the occurrence of the MPE event based on the metric of the one of the plurality of cells.

8. The device according to claim 1, wherein: The one or more processors are further configured to report at least one of a beam identifier, a spatial reference signal identifier, or an uplink resource identifier for each of the one or more cells along with the cell group metric.

9. An apparatus for wireless communication, comprising: Transceiver; a memory configured to store instructions; and One or more processors connected to the memory and the transceiver, wherein the one or more processors are configured to cause the apparatus to: receiving, from a device, an indication of a cell group metric indicating a maximum allowed exposure (MPE) event, wherein the cell group metric corresponds to a plurality of cells configured in inter-band carrier aggregation (CA); and Uplink communications of the device are adjusted based on the cell group metric.

10. The device according to claim 9, wherein: The one or more processors are configured to adjust uplink communications at least in part by limiting scheduling of uplink resources for the device.

11. The device according to claim 9, wherein: The one or more processors are configured to adjust uplink communications at least in part by selecting a different beam for the device to use for transmitting the uplink communications.

12. The device according to claim 9, wherein: The cell group metric includes an overall maximum power reduction parameter value based on a maximum power reduction parameter value for each cell in the plurality of cells.

13. The device according to claim 9, wherein: The cell group metric includes a total power headroom value based on a power headroom value for communications in each of the plurality of cells.

14. The device according to claim 13, wherein: The power headroom value on which the total power headroom value is based comprises a virtual power headroom value for communications in each of the plurality of cells.

15. A method for wireless communication, comprising: Measuring cell group metrics of multiple cells configured in inter-band carrier aggregation CA; Based on the cell group metric, detecting an occurrence of a maximum permissible exposure (MPE) event; as well as Based on detecting the occurrence of the MPE event, the cell group metric is reported to one or more cells among the plurality of cells determined to have configured uplink symbols.

16. The method according to claim 15, wherein: The cell group metric comprises an overall maximum power reduction parameter value based on a maximum power reduction parameter value of each cell in the plurality of cells, wherein the occurrence of the MPE event is detected based on determining that the overall maximum power reduction parameter value reaches a threshold.

17. The method according to claim 15, wherein: The cell group metric includes a total power headroom value based on a power headroom value for communications in each of the plurality of cells, wherein the occurrence of the MPE event is detected based on a determination that the total power headroom value does not reach a threshold.

18. The method according to claim 17, wherein: The power headroom value on which the total power headroom value is based comprises a virtual power headroom value for communications in each of the plurality of cells.

19. The method according to claim 15, wherein: The cell group metric includes a total power backoff parameter value, which is the difference between the maximum transmit power and the transmit power allocated for transmitting communications in each of the multiple cells, wherein the occurrence of the MPE event is detected based on determining that the total power backoff parameter value reaches a threshold.

20. The method according to claim 15, wherein: The cell group metric includes a maximum transmit power, wherein the occurrence of the MPE event is detected based on determining that the maximum transmit power does not reach a threshold.

21. The method according to claim 15, wherein: The cell group metric includes a metric of one of the plurality of cells, wherein the occurrence of the MPE event is detected based on the metric of the one of the plurality of cells.

22. The method of claim 15, further comprising: At least one of a beam identifier, a spatial reference signal identifier, or an uplink resource identifier for each of the one or more cells is reported along with the cell group metric.

23. A method for wireless communication, comprising: receiving, from a device, an indication of a cell group metric indicating a maximum allowed exposure (MPE) event, wherein the cell group metric corresponds to a plurality of cells configured in inter-band carrier aggregation (CA); and Uplink communications of the device are adjusted based on the cell group metric.

24. The method according to claim 23, wherein: The step of adjusting uplink communications includes limiting scheduling of uplink resources for the device.

25. The method according to claim 23, wherein: The step of adjusting the uplink communication includes selecting a different beam for the device to use for transmitting the uplink communication.

26. The method of claim 23, wherein: The cell group metric includes an overall maximum power reduction parameter value based on a maximum power reduction parameter value for each cell in the plurality of cells.

27. The method according to claim 23, wherein: The cell group metric includes a total power headroom value based on a power headroom value for communications in each of the plurality of cells.

28. The method according to claim 27, wherein: The power headroom value on which the total power headroom value is based comprises a virtual power headroom value for communications in each of the plurality of cells.

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