Techniques for modifying uplink communications to avoid maximum permissible exposure (MPE) in wireless communications

Abstract

Various aspects described herein relate to detecting a maximum permissible exposure (MPE) event and / or reporting an MPE event, related metrics, associated requests for beam switching or a new time division duplex (TDD) mode, etc. In one aspect, an MPE event may be detected on at least one CC of a plurality of component carriers (CCs) configured with a first cell in inter-band carrier aggregation (CA), and one of an MPE report or a beam switching request may be sent to a second cell on a different CC of the plurality of CCs. In another aspect, the cell may detect MPE and may send a beam switching command to a device to switch to a new beam for uplink communications. In another aspect, the cell may send an indication to another cell having another CC of the plurality of CCs configured with the device to perform beam switching of the device.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to PCT patent application No. PCT / CN2020 / 076622, filed on February 25, 2020, entitled “Techniques for Modifying Uplink Communications to Avoid Maximum Permitted Exposure (MPE) in Wireless Communications,” which is assigned to the assignee of this application and is 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, or 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. On the one hand, 5G communication technologies may include: enhanced mobile broadband addressing human-centric use cases for accessing multimedia content, services, and data; ultra-reliable-low latency communications (URLLC) with specific latency and reliability specifications; and massive machine-type communications that 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. The device may accordingly detect MPE events when the device is close to the human body, and may apply power reduction to prevent damage caused by strong radio signals. The device may transmit a signal in a specific transmission opportunity for detecting MPE, and may measure the signal energy received when the signal is transmitted. 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, such as applying power reduction to mitigate MPE. Summary of the invention

[0007] A brief summary of one or more aspects is given below to provide a basic understanding of these aspects. This summary is not an extensive overview of all contemplated aspects, and is neither intended to identify key or important elements of all aspects, nor to delineate 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 prelude to a more detailed description presented later.

[0008] According to one aspect, a method of wireless communication is provided. The method includes detecting a maximum permitted exposure (MPE) event on at least one CC of a plurality of component carriers (CCs) configured with a first cell in inter-band carrier aggregation (CA), and based on detecting the MPE event, sending one of an MPE report or a beam switching request to a second cell on a different CC in the plurality of CCs.

[0009] In another aspect, a method for wireless communication is provided. The method includes determining an MPE event on at least one CC of a plurality of CCs configured with a device in inter-band CA, and based on detecting the MPE event, sending a beam switching command to the device to switch to a new beam for uplink communication.

[0010] In another aspect, a method of wireless communication is provided, the method comprising determining an MPE event on at least one CC of a plurality of CCs configured with a device in inter-band CA, and sending an indication to perform beam switching of the device to another cell having another CC of the plurality of CCs configured with the device.

[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 coupled to the memory and the transceiver. The one or more processors are configured to detect an MPE event on at least one CC of a plurality of CCs configured with a first cell in inter-band CA, and based on detecting the MPE event, send one of an MPE report or a beam switching request to a second cell on a different CC of the plurality of CCs.

[0012] 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 coupled to the memory and the transceiver. The one or more processors are configured to determine an MPE event on at least one CC of a plurality of CCs configured with a device in inter-band CA, and based on detecting the MPE event, send a beam switching command to the device to switch to a new beam for uplink communication.

[0013] 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 coupled to the memory and the transceiver. The one or more processors are configured to determine an MPE event on at least one CC of a plurality of CCs configured with a device in inter-band CA, and to send an indication to another cell having another CC of the plurality of CCs configured with the device to perform beam switching of the device.

[0014] On the other hand, an apparatus for wireless communication is provided, comprising: a device for detecting an MPE event on at least one CC of multiple CCs configured together with a first cell in inter-band CA, and a device for sending one of an MPE report or a beam switching request to a second cell on a different CC of the multiple CCs based on detecting the MPE event.

[0015] In another aspect, an apparatus for wireless communication is provided, the apparatus comprising: a device for determining an MPE event on at least one CC of a plurality of CCs configured with a device in inter-band CA, and a device for sending a beam switching command to the device to switch to a new beam for uplink communication based on detecting the MPE event.

[0016] In another aspect, an apparatus for wireless communication is provided, the apparatus comprising: a device for determining an MPE event on at least one CC of multiple CCs configured with a device in inter-band CA, and a device for sending an indication to perform beam switching of the device to another cell having another CC of the multiple CCs configured with the device.

[0017] In another aspect, a computer-readable medium is provided, comprising code for wireless communication executable by one or more processors, the code comprising code for detecting an MPE event on at least one CC of a plurality of CCs configured with a first cell in inter-band CA, and sending one of an MPE report or a beam switching request to a second cell on a different CC of the plurality of CCs based on detecting the MPE event.

[0018] In another aspect, a computer-readable medium is provided, which includes code for wireless communication executable by one or more processors. The code includes code for determining an MPE event on at least one CC of a plurality of CCs configured with a device in inter-band CA, and sending a beam switching command to the device to switch to a new beam for uplink communication based on detecting the MPE event.

[0019] In another aspect, a computer-readable medium including code executable by one or more processors for wireless communication is provided, the code including code for determining an MPE event on at least one CC of a plurality of CCs configured with a device in inter-band CA, and sending an indication to perform beam switching of the device to another cell having another CC of the plurality of CCs configured with the device.

[0020] To accomplish the foregoing and related ends, one or more aspects include the 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

[0021] The disclosed aspects will be described below in conjunction with the accompanying drawings, which are provided to illustrate and not to limit the disclosed aspects, wherein like reference numerals represent like elements, and wherein:

[0022] Figure 1 An example of a wireless communication system according to various aspects of the present disclosure is shown;

[0023] Figure 2 is a block diagram illustrating an example of a UE according to various aspects of the present disclosure;

[0024] Figure 3 is a block diagram illustrating an example of a base station according to various aspects of the present disclosure;

[0025] Figure 4 is a flow chart illustrating an example of a method for reporting parameters associated with a maximum permissible exposure (MPE) event in accordance with various aspects of the present disclosure;

[0026] 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;

[0027] Figure 6 An example of a communication timeline for reporting MPE event information according to various aspects of the present disclosure is shown;

[0028] Figure 7 An example of a communication timeline and corresponding time division duplex (TDD) mode according to various aspects of the present disclosure is shown; and

[0029] 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

[0030] 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.

[0031] The described features generally relate to maximum permissible exposure (MPE) compliance 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 a device can transmit on each of multiple CCs with one or more cells to improve wireless communication throughput, reliability, diversity, etc. In a specific example, the 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 MPE and / or attempting to modify communications to avoid or repair MPE.

[0032] Various aspects described herein relate to adjusting uplink communications on one or more CCs to avoid or repair MPE. For example, uplink beam switching may be performed to switch the uplink beam used by the UE when sending uplink communications to one or more cells, thereby avoiding the use of beams that may cause an MPE event. In this example, an uplink beam switching request may be sent on a CC different from the CC whose communications caused or potentially caused the MPE, which may increase the likelihood of receiving the request on another CC during the MPE. In another example, the timeslot format used when communicating with one or more cells may be modified to remove or reduce uplink transmission opportunities with one or more cells in the timeslot, thereby avoiding or repairing an MPE event.

[0033] The following will refer to Figure 1-Figure 8 The described features are presented in more detail.

[0034] 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 operation. For example, a component can be, but is not limited to, a process running on a processor, a processor, an object, an executable running thread, a program, and / or a computer. As an illustration, both an application running on a computing device and a computing device can be a component. One or more components can reside in a running process and / or thread, and a component can be located on a computer and / or distributed between two or more computers. In addition, these components can be run from various computer-readable media having various data structures stored thereon. These components can communicate through local and / or remote processes, such as according to a signal having one or more data packets, such as data from a component, the component interacts with another component in a local system, a distributed system, and / or interacts with other systems across a network such as the Internet.

[0035] The technology described herein can be used in 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 Code Division Multiple Access (WCDMA) and other variants of CDMA. A TDMA system can implement radio technologies such as Global System for Mobile Communications (GSM). An OFDMA system can implement radio technologies such as Ultra Mobile Broadband (UMB), Evolved UTRA (E-UTRA), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE802.20, Flash-OFDM TMEtc. 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 using E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A and GSM are described in documents from an organization named "3rd Generation Partnership Project" (3GPP). CDMA2000 and UMB are described in documents from an organization named "3rd Generation Partnership Project 2" (3GPP2). The techniques described herein can be used for the above-mentioned systems and radio technologies and other systems and radio technologies, including cellular (e.g., LTE) communications on shared radio spectrum bands. However, the following description describes an LTE / LTE-A system for example purposes, and LTE terminology is used in most of the following descriptions, although these techniques are applicable outside of LTE / LTE-A applications (e.g., for fifth generation (5G) new radio (NR) networks or other next generation communication systems).

[0036] 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 methods may be performed in a different order than described, 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.

[0037] Various aspects or features will be presented in terms of systems that may include multiple 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.

[0038] Figure 11 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 an 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 configuring inter-band CA. 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.

[0039] 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 be connected to 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 be connected to 5GC 190 via a backhaul link 184. Among other functions, base stations 102 may perform one or more of the following functions: user data transmission, 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 of non-access stratum (NAS) messages, NAS node selection, synchronization, radio access network (RAN) sharing, multimedia broadcast multicast service (MBMS), user 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.

[0040] The base station 102 may communicate wirelessly with one or more UEs 104. Each base station 102 may provide communication coverage for a corresponding geographic coverage area 110. There may be overlapping geographic coverage areas 110. For example, a small cell 102' may have a coverage area 110' that overlaps with the coverage area 110 of one or more macro base stations 102. A network including small cells and macro cells may be referred to as a heterogeneous network. A heterogeneous network may also include a home evolved Node B (eNB) (HeNB), which may provide services to a restricted group, which may be referred to as a closed subscriber group (CSG). The communication link 120 between the base station 102 and the UE 104 may 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 may use multiple input multiple output (MIMO) antenna technology, including spatial multiplexing, beamforming and / or transmit diversity. The communication link may be through one or more carriers. The base station 102 / UE 104 can use up to Y MHz (e.g., 5, 10, 15, 20, 100, 400 MHz, etc.) of spectrum for each carrier bandwidth allocated in carrier aggregation, for transmission in the DL and / or UL direction up to a total of Yx MHz (e.g., for x component carriers). The carriers may 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 carriers 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).

[0041] 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, for example, FlashLinQ, WiMedia, Bluetooth, ZigBee, Wi-Fi based on IEEE 802.11 standards, LTE, or NR.

[0042] 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.

[0043] The small cell 102' can operate in licensed and / or unlicensed spectrum. When operating in the unlicensed spectrum, the small cell 102' can adopt NR and use the same 5 GHz unlicensed spectrum used by the Wi-Fi AP 150. The small cell 102' adopting NR in the unlicensed spectrum can improve the coverage and / or increase the capacity of the access network.

[0044] The base station 102, whether a small cell 102' or a large cell (e.g., a macro base station), can include an eNB, a gNodeB (gNB), or other types of base stations. Some base stations (such as gNB 180) can communicate with UE 104 in the traditional sub 6GHz spectrum, in millimeter wave (mmW) frequencies, and / or near mmW frequencies. When the gNB 180 operates in mmW or near mmW frequencies, the gNB 180 can be referred to as a mmW base station. Extremely high frequency (EHF) is a portion of RF in the electromagnetic spectrum. The range of EHF is 30GHz to 300GHz, and the wavelength is between 1 mm and 10 mm. The radio waves in the band can be referred to as millimeter waves. Near mmW can extend down to a frequency of 3GHz, with a wavelength of 100 mm. The super high frequency (SHF) band extends between 3GHz and 30GHz and is also called centimeter waves. Communications using the mmW / near mmW radio frequency bands have extremely high path losses and short distances. The mmW base station 180 can utilize beamforming 182 with the UE 104 to compensate for the extremely high path loss and short distance. The base station 102 mentioned here may include a gNB 180.

[0045] 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.

[0046] 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.

[0047] A base station may also be referred to as a gNB, a Node B, an evolved Node B (eNB), an access point, a base 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, 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 UEs 104 may be referred to as IoT devices (e.g., parking meters, gas pumps, toasters, vehicles, heart monitors, 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 may be 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 subscriber 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.

[0048] In one example, the communication component 242 can detect an MPE event based on multiple CCs configured in inter-band CA, and can send one or more MPE reports or associated requests to the base station 102, which can include a beam switching request or a request for a new time division duplex (TDD) mode (as further described herein). The scheduling component 342 can receive the MPE report or associated request, and can modify uplink communications to avoid or repair MPE. For example, the scheduling component 342 can send a beam switching command, a new TDD mode, etc. to the UE 104. In another example, the scheduling component 342 can send an indication to another base station 102, providing another cell in CA to perform beam switching with the UE 104. In any case, the uplink communication can be modified based on the detection of MPE to avoid or repair MPE.

[0049] Now turn to Figure 2-Figure 8 , various aspects are depicted 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. Figure 4-Figure 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 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 running 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.

[0050] Reference Figure 2 , an 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 such as one or more processors 212 and memory 216 communicating via one or more buses 244 and a transceiver 202, which may operate in conjunction with a modem 240 and / or a communication component 242 to detect and / or report information related to MPE events when inter-band CA is configured in accordance with various aspects described herein.

[0051] 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.

[0052] 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 may 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 may 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.

[0053] 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.

[0054] In addition, in an aspect, the UE 104 can include an RF front end 288, which can be in communication with the one or more antennas 265 and the transceiver 202 for receiving and sending radio transmissions, such as wireless communications sent by at least one base station 102 or wireless transmissions sent by the UE 104. The RF front end 288 can be connected to the one or more antennas 265 and can include one or more low noise amplifiers (LNA) 290, one or more switches 292, one or more power amplifiers (PA) 298, and one or more filters 296 for sending and receiving RF signals.

[0055] In one aspect, the LNAs 290 can amplify the received signal at a desired output level. In one aspect, each LNA 290 can have a specified minimum and 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.

[0056] 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 and 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 for a particular application.

[0057] 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 produce 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 or receive path using a specified filter 296, LNA 290, and / or PA 298.

[0058] As such, the transceiver 202 can 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 can be tuned to operate at a specified frequency so that the UE 104 can communicate with, for example, one or more base stations 102 or one or more cells associated with the one or more base stations 102. In one aspect, the transceiver 202 can be configured to operate at a specified frequency and power level by, for example, the modem 240 based on the UE configuration of the UE 104 and the communication protocol used by the modem 240.

[0059] 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 UE104 to enable the transmission and / or reception of signals from the network based on a specified modem configuration. In one aspect, the modem configuration can be based on the mode of the modem and the frequency band in use. In another aspect, the modem configuration can be based on UE configuration information associated with UE 104 provided by the network during cell selection and / or cell reselection.

[0060] In one aspect, in accordance with various aspects described herein, the communication component 242 may optionally include an MPE detection component 252 for detecting an MPE event or one or more related parameters at the UE 104 and / or sending an MPE report or associated request to one or more base stations, and / or an uplink modification component 254 for modifying one or more uplink communication parameters based on detecting the MPE.

[0061] In one aspect, processor(s) 212 may correspond to a processor that is coupled to 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 .

[0062] Reference Figure 3 In accordance with various aspects described herein, an example implementation of a base station 102 (e.g., base station 102 and / or gNB 180 as described above) may include a variety of components, some of which have been described above, but include components such as one or more processors 312 and memory 316 and a transceiver 302 that communicate via one or more buses 344, which may operate in conjunction with a modem 340 and a scheduling component 342 for configuration and / or communication using inter-band CA.

[0063] 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 corresponding components of UE 104, but configured or otherwise programmed for base station operation as opposed to UE operation.

[0064] In an aspect, scheduling component 342 can optionally include an MPE processing component 352 for receiving parameters related to the detection of MPE and / or reporting parameters or related indications to another base station in accordance with aspects described herein.

[0065] In one aspect, processor(s) 312 may correspond to a processor that is coupled to 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 in the base station.

[0066] Figure 4 A flow chart illustrating an example of a method 400 for detecting and / or reporting information related to MPE events when configured for inter-band CA. In the 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. For example, in inter-band CA, the UE 104 may communicate with a first cell and a second cell simultaneously, the first cell may be in a first frequency band and may have at least one CC, and the second cell may be in a first or second frequency band and may have at least one CC.

[0067] In the method 400, at block 402, an MPE event on at least one CC of a plurality of CCs configured with a first cell in inter-band CA may be determined. In one aspect, the MPE detection component 252, for example, in combination with the processor(s) 212, the memory 216, the transceiver 202, the communication component 242, etc., may determine an MPE event on at least one CC of a plurality of CCs configured with a first cell in inter-band CA. For example, the MPE detection component 252 may determine the MPE event based on one or more beams configured for communicating with the first cell through at least one CC of the plurality of CCs. In an example, the MPE detection component 252 may determine the MPE event based on comparing one or more parameter values ​​associated with sending uplink communications with one or more thresholds, or otherwise report information about the MPE event or other associated requests. The one or more parameter values ​​may, for example, be associated with sending uplink communications using one or more beams configured for at least one CC.

[0068] In a specific example, the MPE detection component 252 can determine an MPE event based at least in part on measuring a maximum power reduction (MPR) parameter value configured for one or more cells or CCs configured in inter-band CA. For example, each cell can configure an MPR parameter value for the UE 104 to apply power reduction in various scenarios. 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, which can include MPR, additional MPR (A-MPR), power management MPR (P-MPR), etc., as described in sections 6.2A.1, 6.2A.2, 6.2A.3, and 6.2.4.

[0069] 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 authorized 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 bounds

[0070] PPowerclass–MAX(MAX(MPR,A_MPR),P-MPR)–MAX{T(MAX(MPR,A_MPR)),T(P-MPR)}≤PUMAX≤EIRPmax

[0071] Wherein PPowerclass represents the UE power class specified in subclause 6.2A.1, EIRPmax represents the applicable maximum EIRP 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 UE power management term specified in subclause 6.2.4, and TRPmax represents the maximum total radiated power (TRP) for the UE power class 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,f(i),c(j)), where pUMAX,f(i),c(j) is the linear value of PUMAX,f(i),c(j). In an example, the MPE detection component 252 can determine the MPE when the P-MPR of the cell reaches a threshold.

[0072] In method 400, at block 404, one of an MPE report or associated request may be sent to a second cell on a different CC in a plurality of CCs. In one aspect, the MPE detection component 252, for example in combination with (multiple) processors 212, memory 216, transceiver 202, communication component 242, etc., may send an MPE report or associated request to a second cell on a different CC in a plurality of CCs based on detecting an MPE event. This may increase the likelihood that the base station is able to receive and process the MPE report or associated request. For example, as further described herein, based on the MPE report or other request, the base station 102 may send a beam switching command, a new TDD mode, etc. to the UE 104 to modify uplink communications therewith. For example, the MPE detection component 252 may send an MPE report, an uplink beam switching request, a new TDD mode request, etc. to the base station 102 via a media access control (MAC) control unit (CE), a physical uplink control channel (PUCCH) transmission, a layer 3 (L3) report, etc.

[0073] For example, the MPE detection component 252 may send an MPE report or a beam switching request having one or more parameters corresponding to the cell, CC, beam, etc. for which MPE is detected. For example, the MPE detection component 252 may send an MPE report or a beam switching request including, for example, at least one band identifier (e.g., from FrequencyInfoUL), (multiple) cell identifiers, (multiple) bandwidth part (BWP) identifiers for the BWP of the CC, (multiple) old uplink beam identifiers, (multiple) new uplink beam identifiers (e.g., requested for communication with the cell via the CC), etc. For example, (multiple) new uplink beam identifiers may be requested to replace (multiple) old uplink beam identifiers. In an example, the band identifier may indicate a group of cells (e.g., more than one cell) in a frequency band. By default, in one example, all cells on a frequency band may be reported. In addition, for example, the MPE detection component 252 may send a request (e.g., from FrequencyInfoUL) on cells in an active band or two bands. As referred to herein, the active band is a frequency band or a corresponding CC (eg, a frequency band or CC with a second cell in this example) that has a smaller impact due to MPE.

[0074] In this example, in the method 400, optionally at block 406, an MPE report or an associated request may be sent to the first cell. In one aspect, the MPE detection component 252, for example, in combination with (multiple) processors 212, memory 216, transceiver 202, communication component 242, etc., may also send an MPE report or an associated request to the first cell. For example, sending an MPE report to the first cell may refer to sending an MPE report to a base station providing the first cell, sending an MPE report through a CC configured in the cell, etc. In a specific example, the MPE detection component 252 may be in the cell c j The carrier f i MPE reports can be sent on cell c m The carrier f n and cell c j The carrier f i A beam switching request is sent on one or both of them.

[0075] In the method 400, optionally, at block 408, a beam switching command may be received from the first cell beam to switch to a new beam, via at least one CC and based on sending an MPE report or an associated request. In one aspect, the uplink modification component 254, for example, in combination with (multiple) processors 212, memory 216, transceiver 202, communication component 242, etc., may receive a beam switching command from the first cell to switch to a new beam, via at least one CC of the plurality of CCs and based on sending an MPE report or an associated request. For example, the new beam may have different spatial properties (e.g., a different spatial direction) than the beam previously used in communication with the first cell, and may not cause or suffer an MPE event accordingly. In addition, in one example above, the MPE report sent at block 404 may be related to a plurality of cells and / or CCs, and may be sent (e.g., by a second cell) to an additional cell. Thus, in one example, receiving a beam switching command at block 408 may include receiving a beam switching command from a plurality of cells or receiving a beam switching command related to a plurality of cells.

[0076] In method 400, optionally, at box 410, an uplink transmission can be sent to the first cell based on the new beam. In one aspect, the communication component 242, for example in combination with (multiple) processors 212, memory 216, transceiver 202, etc., can send an uplink transmission to the first cell based on the new beam. For example, the communication component 242 can generate a new beam for subsequent uplink communications. For example, generating a new beam can include selectively applying power to or activating (multiple) different antenna modules or resources of the UE 104 to achieve different spatial directions. For example, the beam can be configured at the UE 104, and the beam switching command received at box 406 can include an identifier of the configured beam. In addition, for example, in the case where multiple beam switching commands are received at box 408, the communication component 242 can use multiple new beams to send uplink communications to multiple cells. For example, in any case, the communication component 242 can generate a new beam based on the determination identifier and related parameters for powering, activating, or otherwise using an antenna module or other antenna resource of the UE 104 to generate the new beam. In another example, the beam switching command can include parameters related to generating the beam, such as an indication of an antenna module or resource to be powered, activated, etc., an indication of the directionality of the beam, etc. Figure 6 A specific example is shown.

[0077] Figure 6 An example of a communication timeline 600 for communicating with a gNB in ​​cell 0 and a communication timeline 602 for communicating with a gNB in ​​cell 1 using inter-band CA is shown. For example, the UE in timelines 600 and 602 may be the same UE, but the gNB may be the same or different gNBs providing different cells. In a specific example, cell 0 may be in one frequency band and cell 1 may be in another frequency band. In communication timeline 600, the UE may send an uplink transmission to the gNB in ​​cell 0 using beam b11, and may also send an uplink transmission to the gNB in ​​cell 1 using beam b21 in a similar timing or time period. For example, as described herein, a timing or time period for sending communications may include an orthogonal frequency division multiplexing (OFDM) symbol, a single carrier frequency division multiplexing (SC-FDM) symbol, a set of symbols, a time slot of multiple symbols, a set of multiple time slots, a transmission time interval (TTI) (which may include one or more symbols or one or more symbol time slots), as defined in a radio access technology, and the like. In a subsequent time period, in timeline 602, the UE may determine to reduce the priority of transmission on beam b21 due to detecting MPE on or with cell 1, etc.

[0078] For example, UE 104 may deprioritize transmissions based on determining that the P-MPR configured by cell 1 (or that the P-MPR reaches a threshold). Based on deprioritizing transmissions associated with beam b21 or otherwise determining an MPE event, the UE may send an MPE report (or a beam switching request) to the gNB in ​​cell 0 in the same or subsequent time period. Sending an MPE report (or a beam switching request) to the gNB in ​​cell 0 may increase the likelihood that the network receives the report and / or request, where the uplink transmissions of cell 0 are not deprioritized. As described above, for example, based on determining that the MPE (or a P-MPR above a threshold) corresponds to another cell (cell 1), the UE may determine to send an MPE report (or a beam switching request) to the gNB in ​​cell 0. The gNB in ​​cell 0 may receive the MPE report (or beam switching request) and may accordingly notify the gNB in ​​cell 1 of the MPE at the UE and / or related information. The gNB in ​​cell 1 may send an uplink beam switching command to the UE to switch the uplink beam communicating with cell 1 to beam b22. In a subsequent time period, the UE may send uplink transmissions to the gNB in ​​cell 1 using beam b22, and / or may also send uplink transmissions to the gNB in ​​cell 0 using beam b11 at a similar time or time period.

[0079] In another example, sending the associated request at box 404 includes sending a request for a new TDD mode, and in method 400, optionally at box 412, a modified TDD mode can be received from at least one of the first cell or the second cell. On the one hand, the uplink modification component 254, for example, in combination with (multiple) processors 212, memory 216, transceiver 202, communication component 242, etc., can receive a modified TDD mode from at least one of the first cell or the second cell. For example, the modified TDD mode can reduce or remove multiple time periods allocated for uplink communications of the first cell. In an example, the modified TDD mode can additionally or alternatively increase the number of time periods allocated for uplink communications of the second cell or other cells that do not have an MPE event.

[0080] In a specific example, the MPE detection component 252 can send a TDD mode change request on a MAC-CE or a PUCCH. In addition, the TDD mode change request may include a target frequency band identifier, a target cell identifier (e.g., an identifier of a cell on which communication causes an MPE event), a desired target TDD mode, etc. In addition, in an example, the uplink modification component 254 can receive a modified TDD mode from a first cell or a second cell (e.g., from an associated (multiple) base stations) in a slot format indicator (SFI) indication based on downlink control information (DCI). The modified TDD mode can be indicated for multiple cells in the target frequency band. For example, as further described above, a TDD mode can be defined so that a cell with a better MPE condition can be allocated more uplink symbols.

[0081] In this example, in the method 400, optionally at block 414, communication may be performed on at least one CC based on the modified TDD mode. In one aspect, the communication component 242, for example, in conjunction with the (multiple) processors 212, the memory 216, the transceiver 202, etc., may communicate on at least one CC of the multiple CCs based on the modified TDD mode. For example, using a TDD mode that removes some uplink transmission opportunities of cell 1 can help avoid or repair MPE events in communication with cell 1. In one example, modifying the TDD mode can be used in conjunction with or in lieu of beam switching (e.g., or in the event that beam switching is unsuccessful), etc. Figure 7 An example is shown in FIG.

[0082] Figure 7An example of a communication timeline 700 of communication between a gNB and a UE is shown, along with TDD modes 702 and 704 configured for the UE to communicate with the gNB. In the communication timeline 700, the gNB and the UE may communicate according to TDD mode A 702, which defines a mode for cell 0 and cell 1 in inter-band CA, where both cells are configured to communicate in a set of symbols according to the following pattern: downlink symbol, flexible symbol, uplink symbol, uplink symbol. The UE may send an MPE report and / or a request for a new TDD mode in the timeline 700, which may be based on detecting an MPE event and / or associated CCs and / or beams with cell 1. As described above, in the example, the UE may send an MPE report and / or a request for a new TDD mode to one or more gNBs. One or more gNBs may configure a new TDD mode based on receiving the report and / or request, which may include TDD mode B 704, which defines a pattern for symbols of cell 0 according to the following pattern: uplink symbol, uplink symbol, uplink symbol, uplink symbol, and defines a pattern for symbols of cell 1 according to the following pattern: downlink symbol, downlink symbol, downlink symbol, downlink symbol. In this regard, based on the UE being configured only for downlink symbols with cell 1, the MPE event may be avoided or fixed. Furthermore, in this example, the removal of uplink symbols in the pattern of cell 1 may be addressed by providing additional uplink symbols in the pattern of cell 0.

[0083] Figure 5 A flow chart illustrating an example of a method 500 for receiving an MPE report or associated request in accordance with various aspects described herein. In an example, the base station 102 may use Figure 1 and Figure 3 One or more 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 MPE event on at least one CC of a plurality of CCs configured with a device in inter-band CA may be determined. In one aspect, the MPE processing component 352, for example in conjunction with the processor(s) 312, the memory 316, the transceiver 302, the scheduling component 342, etc., may determine an MPE event on at least one CC of a plurality of CCs configured with a device in inter-band CA. For example, the MPE processing component 352 may receive an indication of an MPE event occurring, one or more metrics from which the MPE processing component 352 may detect an event occurring (e.g., a P-MPR configured for the device, a power level of the device, a TRP of the device, etc.), etc. In addition, for example, the MPE processing component 352 may receive an indication or other metric from the device, from another base station or cell, etc.

[0085] When an MPE event is determined at block 502, optionally, at block 504, an indication to perform beam switching of the device may be received from another cell having another CC of the plurality of CCs configured with the device. In one aspect, the MPE processing component 352, for example in combination with the processor(s) 312, the memory 316, the transceiver 302, the scheduling component 342, etc., may receive an indication to perform beam switching of the device from another cell having another CC of the plurality of CCs configured with the device. For example, the MPE processing component 352 may receive the indication from the another cell via a backhaul link. For example, the device may not have experienced an MPE event with the other cell, and thus the cell may communicate the indication to the cell of the base station 102 so that the device does not have to violate the MPE to send the indication to the cell of the base station 102.

[0086] In this example, in method 500, optionally at block 506, based on determining an MPE event, a beam switching command can be sent to the device to switch to a new beam for uplink communication. In one aspect, scheduling component 342, for example in conjunction with processor(s) 312, memory 316, transceiver 302, etc., can send a beam switching command to the device based on determining an MPE event to switch to a new beam for uplink communication. For example, as described above, MPE processing component 352 can determine a new beam having different spatial parameters than a current or previous beam, so that UE 104 can use the new beam to avoid or repair the MPE event.

[0087] In one example, the MPE processing component 352 can determine the new beam based on parameters indicated in an MPE report or beam switching request, which is sent by another cell and provided to the cell of the base station 102. For example, one or more parameters can include a band identifier (e.g., from FrequencyInfoUL), a cell identifier (multiple), a bandwidth part (BWP) identifier (multiple) of a BWP for a CC, an old uplink beam identifier (multiple), a new uplink beam identifier (multiple) (e.g., requested for communication with the cell via the CC), etc. For example, the MPE processing component 352 can use the frequency band or BWP to determine the new beam of one or more cells, determine the new beam based on the indicated new beam identifier, etc. At least one of the above. In any case, the scheduling component 342 can send a beam switching command to the device.

[0088] In another example, when an MPE event is determined at block 502, an MPE report or associated request may be received from a device, optionally at block 508. In one aspect, the MPE processing component 352, for example, in conjunction with the processor(s) 312, the memory 316, the transceiver 302, the scheduling component 342, etc. An MPE report or associated request may be received from a device. For example, the request may include a beam switching request, a request for a new TDD mode, etc. For example, the MPE report and / or associated request may include one or more parameters, based on which the cell, frequency band, beam, etc. related to the MPE may be determined. The MPE processing component 352 may use this information to determine another cell to which to send or forward an MPE report, associated request, indication of switching beams, etc. For example, the scheduling component 342 may know which cells are providing which frequency bands, BWPs, etc., and the MPE processing component 352 may determine to send an MPE report, associated request, etc. to the cell providing the frequency band, BWP, etc. related to the MPE event.

[0089] In this example, in the method 500, optionally at box 510, an indication to perform beam switching of the device can be sent to another cell having another CC in multiple CCs configured with the device. On the one hand, the MPE processing component 352, for example, in combination with (multiple) processors 312, memory 316, transceiver 302, scheduling component 342, etc., can send an indication to perform beam switching of the device to another cell having another CC in multiple CCs configured with the device. For example, the MPE processing component 352 sends the indication to another cell via a backhaul link. As described above, the indication may include an MPE report, an associated request, or other corresponding parameters to enable another cell to perform beam switching with the device. In one example, when determining an MPE event at box 502, multiple cells related to the MPE event can be determined, and the MPE processing component 352 can send an indication to one or more other cells (e.g., cells identified as being related to the MPE event from the MPE report) accordingly.

[0090] In another example, receiving an MPE report or an associated request at box 508 may include receiving a request for a new TDD mode. In this example, in method 500, optionally at box 512, a modified TDD mode may be generated based on an MPE report or an associated request. On the one hand, the MPE processing component 352, for example in combination with (multiple) processors 312, memory 316, transceiver 302, scheduling component 342, etc., may generate a modified TDD mode based on an MPE report or an associated request. For example, as described above, the MPE processing component 352 may generate a modified TDD mode to reduce or remove uplink symbols of a cell associated with an MPE event, and / or increase uplink symbols with other cells. In addition, for example, an MPE report or an associated request may include a target cell identifier that identifies a cell (e.g., a cell associated with an MPE event) for which a new TDD mode is desired. For example, as described above, a cell associated with an MPE event may include a cell having uplink communications configured in a CC and / or using a beam that may cause a detected or potential MPE event. In this example, the MPE processing component 352 can generate a modified TDD mode for at least the identified cell. In yet another example, the MPE report or associated request can include a target frequency band identifier that identifies (e.g., for all cells in a frequency band associated with inter-band CA) a frequency band in which a new TDD mode is desired, and the MPE processing component 352 can generate a modified TDD mode for at least the cells in the identified target frequency band.

[0091] In the method 500, optionally at block 514, an indication of the modified TDD mode can be sent to the device. In an aspect, the scheduling component 342, e.g., in conjunction with the processor(s) 312, the memory 316, the transceiver 302, etc., can send an indication of the modified TDD mode to the device. In this regard, the device can receive the TDD mode as described, and can communicate with the cell of the base station 102 and / or other cells in the inter-band CA based on the new TDD mode.

[0092] 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.

[0093] 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 an output symbol stream to transmit modulators / demodulators 832 and 833. Each modulator / demodulator 832 to 833 may process a corresponding output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator / demodulator 832 to 833 may further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream 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.

[0094] UE 104 may be a reference Figure 1-Figure 2 Examples of various aspects of the UE 104 described. 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 corresponding received signal 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, and provide decoded control information to the processor 880 or the memory 882.

[0095] In some cases, processor 880 may execute stored instructions to instantiate communication component 242 (see, e.g., Figure 1 and Figure 2 ).

[0096] 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.

[0097] In some cases, processor 840 may execute stored instructions to instantiate scheduling component 342 (see, e.g., Figure 1 and Figure 3 ).

[0098] The components of the UE 104 may be implemented individually or collectively with one or more ASICs adapted to perform some or all of the applicable functions in hardware. Each of the mentioned modules may be a device for performing one or more functions associated with 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 of the applicable functions in hardware. Each of the mentioned components may be a device for performing one or more functions associated with the operation of the MIMO communication system 800.

[0099] The following aspects are merely illustrative, and aspects thereof may be combined with other embodiments or aspects of the teachings described herein without limitation.

[0100] Aspect 1 is a method for wireless communication, comprising: detecting an MPE event on at least one CC among multiple CCs configured together with a first cell in inter-band CA, and based on detecting the MPE event, sending one of an MPE report or a beam switching request to a second cell on a different one of the multiple CCs.

[0101] In aspect 2, the method of aspect 1 includes receiving a beam switching command from the first cell to switch to a new beam through one CC among the plurality of CCs and based on sending an MPE report or a beam switching request, and sending an uplink transmission to the first cell based on the new beam.

[0102] In aspect 3, the method of any one of aspects 1 or 2 includes, wherein a first cell in inter-band CA uses a first frequency band having at least a first CC, and a second cell in inter-band CA uses a first or second frequency band having at least a second CC.

[0103] In aspect 4, the method of any one of aspects 1 to 3 includes, wherein the MPE report or beam switching request indicates a frequency band identifier, at least one cell identifier, at least one bandwidth part identifier, at least one uplink beam identifier of an original uplink beam, or at least one new beam identifier of a new uplink beam.

[0104] In aspect 5, the method of aspect 4 includes, wherein the band identifier identifies multiple cells or CCs on which the MPE event is detected, and also includes, through one of the multiple CCs and based on sending the MPE report or the beam switching request, receiving a beam switching command from the first cell or multiple cells to switch to a new beam on the multiple cells or CCs.

[0105] In aspect 6, the method of any one of aspects 1 to 5 includes, wherein sending the MPE report or the beam switching request includes sending the MPE report or the beam switching request on a MAC CE, a PUCCH or a layer 3 report.

[0106] In aspect 7, the method of any one of aspects 1 to 6 includes sending one of an MPE report or a beam switching request to the first cell on one of the plurality of CCs based on detecting the MPE event.

[0107] In aspect 8, the method of any one of aspects 1 to 7 includes sending a request to change a TDD mode of a symbol set to at least one of the first cell or the second cell based on detecting an MPE event.

[0108] In aspect 9, the method of aspect 8 includes receiving, in response to the request, a modified TDD mode for the set of symbols from at least one of the first cell or the second cell, and communicating on a CC of the plurality of CCs based on the modified TDD mode.

[0109] In aspect 10, the method of any of aspects 8 or 9 includes, wherein the request identifies the first cell as a target cell for the change in TDD mode.

[0110] In aspect 11, the method of any one of aspects 8 to 10 includes, wherein the request indicates a change in TDD mode.

[0111] Aspect 12 is a method for wireless communication, comprising: determining an MPE event on one of multiple CCs configured with a device in inter-band CA; and based on detecting the MPE event, sending a beam switching command to the device to switch to a new beam for uplink communication.

[0112] In aspect 13, the method of aspect 12 includes, wherein determining the MPE event is based at least in part on receiving an indication to perform beam switching of the device from another cell having another CC of the plurality of CCs configured with the device.

[0113] In aspect 14, the method of any of aspects 12 or 13 includes, wherein determining the MPE event includes receiving an MPE report or a beam switching request from the device.

[0114] In aspect 15, the method of any one of aspects 12 to 14 includes receiving a request from a device to change a TDD mode of a symbol set.

[0115] In aspect 16, the method of aspect 15 includes generating a modified TDD mode for the set of symbols based at least in part on the request, and sending an indication of the modified TDD mode to the device.

[0116] In aspect 17, the method of any of aspects 15 or 16 includes, wherein the request identifies a target cell for a change in TDD mode.

[0117] In aspect 18, the method of any one of aspects 15 to 17 includes, wherein the request indicates a change in TDD mode.

[0118] Aspect 19 is a method for wireless communication, comprising: determining an MPE event on one of multiple CCs configured with a device in inter-band CA, and sending an indication to perform beam switching of the device to another cell having another CC of the multiple CCs configured with the device.

[0119] In aspect 20, the method of aspect 19 includes, wherein determining the MPE event includes receiving an MPE report or a beam switching request from the device.

[0120] In aspect 21, the method of aspect 20 includes, wherein the MPE report or beam switching request indicates one or more parameters, including at least one of the following: a band identifier, at least one cell identifier, at least one bandwidth part identifier, at least one uplink beam identifier of the original uplink beam, or at least one new beam identifier of the new uplink beam, and also includes determining another cell based at least in part on the one or more parameters.

[0121] In aspect 22, the method of aspect 21 includes, wherein the band identifier identifies a plurality of cells or CCs on which the MPE event is detected, and further includes sending an indication to perform beam switching of the device to the plurality of cells.

[0122] In aspect 23, the method of any one of aspects 20 to 22 includes, wherein receiving the MPE report or the beam switching request includes receiving the MPE report or the beam switching request on a MAC CE, a PUCCH or a layer 3 report.

[0123] Aspect 24 is an apparatus for wireless communication, comprising a transceiver, a memory configured to store instructions, and one or more processors communicatively coupled to the memory and the transceiver, wherein the one or more processors are configured to detect an MPE event on at least one of a plurality of CCs configured with a first cell in inter-band CA, and based on detecting the MPE event, send one of an MPE report or a beam switching request to a second cell on a different one of the plurality of CCs.

[0124] In aspect 25, the apparatus of aspect 24 includes, wherein the one or more processors are further configured to receive a beam switching command from the first cell through one CC among the plurality of CCs and based on sending an MPE report or a beam switching request to switch to a new beam, and to send an uplink transmission to the first cell based on the new beam.

[0125] In aspect 26, the apparatus of any one of aspects 24 or 25 includes, wherein a first cell in inter-band CA uses a first frequency band having at least a first CC, and a second cell in inter-band CA uses a first or second frequency band having at least a second CC.

[0126] In aspect 27, the apparatus of any of aspects 24 to 26 includes, wherein the MPE report or beam switching request indicates a band identifier, at least one cell identifier, at least one bandwidth part identifier, at least one uplink beam identifier of an original uplink beam, or at least one new beam identifier of a new uplink beam.

[0127] In aspect 28, the apparatus of aspect 27 includes, wherein the band identifier identifies multiple cells or CCs on which the MPE event is detected, and wherein the one or more processors are also configured to receive a beam switching command from a first cell or multiple cells through one of the multiple CCs and based on sending an MPE report or a beam switching request to switch to a new beam on the multiple cells or CCs.

[0128] In aspect 29, the apparatus of any one of aspects 24 to 28 includes, wherein the one or more processors are configured to send the MPE report or beam switching request on a MAC CE, PUCCH or layer 3 report.

[0129] In aspect 30, the apparatus of any one of aspects 24 to 29 includes, wherein the one or more processors are further configured to send one of an MPE report or a beam switching request to the first cell on one of the plurality of CCs based on detecting an MPE event.

[0130] In aspect 31, the apparatus of any one of aspects 24 to 30 includes, wherein the one or more processors are further configured to send a request to change the TDD mode of the symbol set to at least one of the first cell or the second cell based on detecting the MPE event.

[0131] In aspect 32, the apparatus of aspect 31 includes, wherein the one or more processors are further configured to receive a modified TDD mode for a set of symbols from at least one of the first cell or the second cell in response to the request, and communicate on one of the multiple CCs based on the modified TDD mode.

[0132] In aspect 33, the apparatus of any of aspects 31 or 32 includes, wherein the request identifies the first cell as a target cell for the change in TDD mode.

[0133] In aspect 34, the apparatus of any one of aspects 31 to 33 includes, wherein the request indicates a change in TDD mode.

[0134] Aspect 35 is an apparatus for wireless communication, comprising a transceiver, a memory configured to store instructions, and one or more processors communicatively coupled to the memory and the transceiver, wherein the one or more processors are configured to determine an MPE event on one of a plurality of CCs configured with a device in inter-band CA, and send a beam switching command to the device based on detecting the MPE event to switch to a new beam for uplink communication.

[0135] In aspect 36, the apparatus of aspect 35 includes, wherein the one or more processors are configured to determine the MPE event based at least in part on receiving an indication to perform beam switching of the device from another cell having another CC of the plurality of CCs configured with the device.

[0136] In aspect 37, the apparatus of any of aspects 35 or 36 includes, wherein the one or more processors are further configured to determine the MPE event at least in part by receiving an MPE report or a beam switching request from the device.

[0137] In aspect 38, the apparatus of any one of aspects 35 to 37 includes, wherein the one or more processors are further configured to receive a request from the device to change the TDD mode of the symbol set.

[0138] In aspect 39, the apparatus of aspect 38 includes wherein the one or more processors are further configured to generate a modified TDD mode for the set of symbols based at least in part on the request, and send an indication of the modified TDD mode to the device.

[0139] In aspect 40, the apparatus of any of aspects 38 or 39 includes, wherein the request identifies a target cell for a change in TDD mode.

[0140] In aspect 41, the apparatus of any one of aspects 38 to 40 includes, wherein the request indicates a change in TDD mode.

[0141] Aspect 42 is an apparatus for wireless communication, comprising a transceiver, a memory configured to store instructions, and one or more processors communicatively coupled to the memory and the transceiver, wherein the one or more processors are configured to determine an MPE event on one of a plurality of CCs configured with a device in inter-band CA, and to send an indication to perform beam switching of the device to another cell having another CC of the plurality of CCs configured with the device.

[0142] In aspect 43, the apparatus of aspect 42 comprises, wherein the one or more processors are configured to determine the MPE event comprises receiving an MPE report or a beam switch request from the device.

[0143] In aspect 44, the apparatus of aspect 43 includes, wherein the MPE report or beam switching request indicates one or more parameters, including at least one of the following: a band identifier, at least one cell identifier, at least one bandwidth part identifier, at least one uplink beam identifier of the original uplink beam, or at least one new beam identifier of the new uplink beam, and wherein the one or more processors are also configured to further determine another cell based at least in part on the one or more parameters.

[0144] In aspect 45, the apparatus of aspect 44 includes, wherein the band identifier identifies a plurality of cells or CCs on which the MPE event is detected, and wherein the one or more processors are further configured to send an indication to the plurality of cells to perform beam switching of the device.

[0145] In aspect 46, the apparatus of any one of aspects 43 to 45 includes, wherein the one or more processors are further configured to receive an MPE report or a beam switching request on a MAC CE, a PUCCH or a layer 3 report.

[0146] Aspect 47 is an apparatus for wireless communication, comprising: a device for detecting an MPE event on at least one of multiple CCs configured together with a first cell in inter-band CA, and a device for sending one of an MPE report or a beam switching request to a second cell on a different one of the multiple CCs based on detecting the MPE event.

[0147] In aspect 48, the apparatus of aspect 47 includes a device for receiving a beam switching command from the first cell to switch to a new beam through one of the multiple CCs and based on sending an MPE report or a beam switching request, and a device for sending an uplink transmission to the first cell based on the new beam.

[0148] In aspect 49, the apparatus of any one of aspects 47 or 48 includes, wherein the first cell in inter-band CA uses a first frequency band having at least a first CC, and the second cell in inter-band CA uses the first or second frequency band having at least a second CC.

[0149] In aspect 50, the apparatus of any of aspects 47 to 49 includes, wherein the MPE report or beam switching request indicates a band identifier, at least one cell identifier, at least one bandwidth part identifier, at least one uplink beam identifier of an original uplink beam, or at least one new beam identifier of a new uplink beam.

[0150] In aspect 51, the apparatus of aspect 50 includes, wherein the band identifier identifies multiple cells or CCs on which the MPE event is detected, and also includes a device for receiving a beam switching command from a first cell or multiple cells through one of the multiple CCs and based on sending an MPE report or a beam switching request to switch to a new beam on the multiple cells or CCs.

[0151] In aspect 52, the apparatus of any one of aspects 47 to 51 includes, wherein the means for sending sends the MPE report or beam switching request on a MACCE, a PUCCH or a layer 3 report.

[0152] In aspect 53, the apparatus of any one of aspects 47 to 52 comprises means for sending one of an MPE report or a beam switching request to the first cell on one of the plurality of CCs based on detecting the MPE event.

[0153] In aspect 54, the apparatus of any one of aspects 47 to 53 comprises means for sending a request to change the TDD mode of the symbol set to at least one of the first cell or the second cell based on detecting the MPE event.

[0154] In aspect 55, the apparatus of aspect 54 includes means for receiving a modified TDD mode for the set of symbols from at least one of the first cell or the second cell in response to the request, and means for communicating on one of the plurality of CCs based on the modified TDD mode.

[0155] In aspect 56, the apparatus of any one of aspects 54 or 55 includes, wherein the request identifies the first cell as a target cell for the change in TDD mode.

[0156] In aspect 57, the apparatus of any one of aspects 54 to 56 includes, wherein the request indicates a change in TDD mode.

[0157] Aspect 58 is an apparatus for wireless communication, comprising a device for determining an MPE event on one of a plurality of CCs configured with a device in inter-band CA, and a device for sending a beam switching command to the device to switch to a new beam for uplink communication based on detecting the MPE event.

[0158] In aspect 59, the apparatus of aspect 58 includes, wherein the means for determining determines the MPE event based at least in part on receiving an indication to perform beam switching of the apparatus from another cell having another CC of the plurality of CCs configured with the apparatus.

[0159] In aspect 60, the apparatus of any of aspects 58 or 59 includes, wherein the means for determining determines the MPE event at least in part by receiving an MPE report or a beam switch request from the device.

[0160] In aspect 61, the apparatus of any one of aspects 58 to 60 comprises means for receiving a request from a device to change a TDD mode of a symbol set.

[0161] In aspect 62, the apparatus of aspect 61 comprises means for generating a modified TDD mode for the set of symbols based at least in part on the request, and means for sending an indication of the modified TDD mode to the device.

[0162] In aspect 63, the apparatus of any one of aspects 61 or 62 includes, wherein the request identifies a target cell for a change in TDD mode.

[0163] In aspect 64, the apparatus of any one of aspects 61 to 63 includes, wherein the request indicates a change in TDD mode.

[0164] Aspect 65 is an apparatus for wireless communication, comprising: a device for determining an MPE event on one of multiple CCs configured with a device in inter-band CA, and a device for sending an indication to perform beam switching of the device to another cell having another CC of the multiple CCs configured with the device.

[0165] In aspect 66, the apparatus of aspect 65 includes, wherein the means for determining determines the MPE event at least in part by receiving an MPE report or a beam switch request from the device.

[0166] In aspect 67, the apparatus of aspect 66 includes, wherein the MPE report or beam switching request indicates one or more parameters, including at least one of the following: a band identifier, at least one cell identifier, at least one bandwidth part identifier, at least one uplink beam identifier of the original uplink beam, or at least one new beam identifier of the new uplink beam, and also includes a device for determining another cell based at least in part on the one or more parameters.

[0167] In aspect 68, the apparatus of aspect 67 includes, wherein the band identifier identifies a plurality of cells or CCs on which the MPE event is detected, and further includes means for sending an indication to the plurality of cells to perform beam switching of the device.

[0168] In aspect 69, the apparatus of any one of aspects 66 to 68 includes, wherein the means for receiving receives the MPE report or the beam switching request on a MAC CE, a PUCCH or a layer 3 report.

[0169] Aspect 70 is a computer-readable medium comprising code executable by one or more processors for wireless communication, the code comprising code for detecting an MPE event on at least one CC of a plurality of CCs configured with a first cell in inter-band CA, and based on detecting the MPE event, sending one of an MPE report or a beam switching request to a second cell on a different one of the plurality of CCs.

[0170] In aspect 71, the computer-readable medium of aspect 70 includes code for receiving a beam switching command from a first cell to switch to a new beam through one of the plurality of CCs and based on sending an MPE report or a beam switching request, and code for sending an uplink transmission to the first cell based on the new beam.

[0171] In aspect 72, the computer readable medium of any of aspects 70 or 71 includes, wherein a first cell in inter-band CA uses a first frequency band having at least a first CC, and a second cell in inter-band CA uses a first or second frequency band having at least a second CC.

[0172] In aspect 73, the computer-readable medium of any one of aspects 70 to 72 includes, wherein the MPE report or beam switching request indicates a band identifier, at least one cell identifier, at least one bandwidth part identifier, at least one uplink beam identifier of the original uplink beam, or at least one new beam identifier of the new uplink beam.

[0173] In aspect 74, the computer-readable medium of aspect 73 includes, wherein the band identifier identifies multiple cells or CCs on which the MPE event is detected, and also includes code for receiving a beam switching command from a first cell or multiple cells through one of the multiple CCs and based on sending an MPE report or a beam switching request to switch to a new beam on the multiple cells or CCs.

[0174] In aspect 75, the computer readable medium of any one of aspects 70 to 74 includes, wherein the code for sending sends the MPE report or beam switch request on a MAC CE, a PUCCH, or a layer 3 report.

[0175] In aspect 76, the computer-readable medium of any one of aspects 70 to 75 comprises code for sending one of an MPE report or a beam switching request to a first cell on one CC of the plurality of CCs based on detecting an MPE event.

[0176] In aspect 77, the computer-readable medium of any one of aspects 70 to 76 comprises code for sending a request to change a TDD mode of a set of symbols to at least one of the first cell or the second cell based on detecting an MPE event.

[0177] In aspect 78, the computer-readable medium of aspect 77 includes code for receiving, in response to the request, a modified TDD mode for the set of symbols from at least one of the first cell or the second cell, and code for communicating on a CC of the plurality of CCs based on the modified TDD mode.

[0178] In aspect 79, the computer readable medium of any of aspects 77 or 78 includes, wherein the request identifies the first cell as a target cell for the change in TDD mode.

[0179] In aspect 80, the computer readable medium of any one of aspects 77 to 79 includes, wherein the request indicates a change in TDD mode.

[0180] Aspect 81 is a computer-readable medium comprising code executable by one or more processors for wireless communication, the code comprising code for determining an MPE event on one of a plurality of CCs configured with a device in inter-band CA, and sending a beam switching command to the device to switch to a new beam for uplink communication based on detecting the MPE event.

[0181] In aspect 82, the computer-readable medium of aspect 81 includes, wherein the code for determining determines the MPE event based at least in part on receiving an indication to perform beam switching of the device from another cell having another CC of the plurality of CCs configured with the device.

[0182] In aspect 83, the computer readable medium of any of aspects 81 or 82 includes, wherein the code for determining determines the MPE event at least in part by receiving an MPE report or a beam switching request from the device.

[0183] In aspect 84, the computer-readable medium of any one of aspects 81 to 83 includes code for receiving, from a device, a request to change a time division duplex (TDD) mode of a set of symbols.

[0184] In aspect 85, the computer-readable medium of aspect 84 comprises code for generating a modified TDD mode for the set of symbols based at least in part on the request, and code for sending an indication of the modified TDD mode to the device.

[0185] In aspect 86, the computer readable medium of any one of aspects 84 or 85 includes, wherein the request identifies a target cell for a change in TDD mode.

[0186] In aspect 87, the computer readable medium of any one of aspects 84 to 86 includes, wherein the request indicates a change in TDD mode.

[0187] Aspect 88 is a computer-readable medium comprising code executable by one or more processors for wireless communication, the code comprising code for determining an MPE event on one of a plurality of CCs configured with a device in inter-band CA, and sending an indication to perform beam switching of the device to another cell having another CC in the plurality of CCs configured with the device.

[0188] In aspect 89, the computer-readable medium of aspect 88 includes, wherein the code for determining determines the MPE event at least in part by receiving an MPE report or a beam switch request from the device.

[0189] In aspect 90, the computer-readable medium of aspect 89 includes, wherein the MPE report or beam switching request indicates one or more parameters, including at least one of the following: a band identifier, at least one cell identifier, at least one bandwidth part identifier, at least one uplink beam identifier of the original uplink beam, or at least one new beam identifier of the new uplink beam, and also includes code for determining another cell based at least in part on the one or more parameters.

[0190] In aspect 91, the computer-readable medium of aspect 90 includes wherein the band identifier identifies a plurality of cells or CCs on which the MPE event is detected, and further includes code for sending an indication to the plurality of cells to perform beam switching of the device.

[0191] In aspect 92, the computer readable medium of any one of aspects 89 to 91 includes, wherein the code for receiving receives the MPE report or beam switch request on a MAC CE, a PUCCH, or a layer 3 report.

[0192] The detailed description set forth above in conjunction with the accompanying drawings describes examples and does 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 detailed description includes specific details for the purpose of providing an understanding of the described technology. However, these technologies can be practiced without these specific details. In some cases, well-known structures and devices are shown in block diagram form to avoid confusing the concepts of the described examples.

[0193] 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 a computer-readable medium, or any combination thereof.

[0194] The various illustrative 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, such as a combination of a DSP and a microprocessor, a plurality of microprocessors, a combination of one or more microprocessors and a DSP core, or any other such configuration.

[0195] The functions described herein can be implemented in hardware, software run by a processor, firmware, or any combination thereof. If implemented in software run by a processor, these functions can be stored as one or more instructions or codes on a non-transitory computer-readable medium or transmitted thereon. 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 above functions can be implemented using software, hardware, firmware, hard wiring, or any combination thereof run by a specially programmed processor. The features that implement the functions can also be physically located in various locations, including being distributed so that some functions are implemented in different physical locations. In addition, as used herein, including in the claims, the "or" used in the list of items starting with "at least one" indicates a separate list, so that, for example, a list of "at least one of A, B, or C" means A or B or C or AB or AC or BC or ABC (i.e., A and B and C).

[0196] Computer-readable media include computer storage media and communication media, including any media that facilitates transferring a computer program 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 devices in the form of instructions or data structures, and any other medium that can be accessed by a general or special computer or a general or special processor. Similarly, any connection is properly referred to as a computer-readable medium. For example, if software is sent from a website, server or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) or wireless technologies such as infrared, radio and microwaves, coaxial cable, fiber optic cable, twisted pair, DSL or wireless technologies such as infrared, radio and microwaves are included in the definition of medium. Disks and optical disks used here include compact discs (CDs), laser optical disks, optical disks, digital versatile discs (DVDs), floppy disks and blue-ray discs, wherein disks usually reproduce data magnetically, and optical discs reproduce data optically with lasers. Combinations of the above are also included within the scope of computer-readable media.

[0197] 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 variants without departing from the spirit or scope of the present disclosure. In addition, although the elements of the various aspects and / or embodiments described may be described or claimed in the singular, unless explicitly stated to be limited to the singular, the plural number is also contemplated. In addition, all or part of any aspect and / or embodiment may be used together with all or part of any other aspect and / or embodiment, unless otherwise stated. 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 communicatively coupled to the memory and the transceiver, wherein the one or more processors are configured to: detecting a maximum tolerated exposure (MPE) event on at least one CC of a plurality of component carriers (CC), wherein the at least one CC is configured with a first cell in an inter-band carrier aggregation (CA); as well as Based on detecting the MPE event and on a different CC among the plurality of CCs, one of an MPE report or a beam switching request is sent, wherein the different CC is configured with a second cell in inter-band CA.

2. The device according to claim 1, wherein: The one or more processors are further configured to: receiving, through the at least one CC and based on sending the MPE report or the beam switching request, a beam switching command from the first cell to switch to a new beam; and An uplink transmission is sent to the first cell based on the new beam.

3. The device according to claim 1, wherein: A first cell in inter-band CA uses a first frequency band having at least a first CC, and a second cell in inter-band CA uses the first frequency band or the second frequency band having at least a second CC.

4. The device according to claim 1, wherein: The MPE report or beam switching request indicates a band identifier, at least one cell identifier, at least one bandwidth part identifier, at least one uplink beam identifier of the original uplink beam, or at least one new beam identifier of the new uplink beam.

5. The device according to claim 4, wherein: The band identifier identifies multiple cells or CCs on which the MPE event is detected, and wherein the one or more processors are also configured to receive a beam switching command from the first cell or the multiple cells through the at least one CC and based on sending an MPE report or a beam switching request to switch to a new beam on the multiple cells or CCs.

6. The device according to claim 1, wherein: The one or more processors are configured to send an MPE report or a beam switching request on a medium access control MAC control element CE, a physical uplink control channel PUCCH, or a layer 3 report.

7. The device according to claim 1, wherein: The one or more processors are further configured to send one of an MPE report or a beam switching request to the first cell on the at least one CC based on detecting the MPE event.

8. The device according to claim 1, wherein: The one or more processors are further configured to send a request to at least one of the first cell or the second cell to change a time division duplex (TDD) mode of the symbol set based on detecting the MPE event.

9. The device according to claim 8, wherein: The one or more processors are further configured to: receiving, in response to the request, from at least one of the first cell or the second cell, a modified TDD mode for a set of symbols; as well as Communicating on the at least one CC is performed based on the modified TDD mode.

10. The device according to claim 8, wherein: The request identifies the first cell as a target cell for a change in TDD mode.

11. The device according to claim 8, wherein: The request indicates a change in TDD mode.

12. An apparatus for wireless communication, comprising: Transceiver; a memory configured to store instructions; and one or more processors communicatively coupled to the memory and the transceiver, wherein the one or more processors are configured to: determining a maximum allowed exposed MPE event on at least one CC of a plurality of component carriers CC configured with the device in inter-band carrier aggregation CA; as well as Sending a beam switching command to the device based on the MPE event to switch to a new beam for uplink communication, The one or more processors are configured to determine an MPE event based at least in part on receiving an indication to perform beam switching of the device from another cell having another CC of the plurality of CCs configured with the device.

13. The device according to claim 12, wherein: The one or more processors are configured to determine an MPE event at least in part by receiving an MPE report or a beam switch request from a device.

14. The device according to claim 12, wherein: The one or more processors are further configured to receive a request from a device to change a time division duplex (TDD) mode of a set of symbols.

15. The device according to claim 14, wherein: The one or more processors are further configured to: generating a modified TDD mode for a set of symbols based at least in part on the request; and An indication of the modified TDD mode is sent to the device.

16. The device according to claim 14, wherein: The request identifies a target cell for a change in TDD mode.

17. The apparatus of claim 14, wherein the request indicates a change in a TDD mode.

18. An apparatus for wireless communication, comprising: Transceiver; a memory configured to store instructions; and one or more processors communicatively coupled to the memory and the transceiver, wherein the one or more processors are configured to: determining a maximum allowed exposed MPE event on at least one CC of a plurality of component carriers CC configured with the device in inter-band carrier aggregation CA; as well as An indication to perform beam switching of the device is sent to another cell having another CC of the plurality of CCs configured with the device.

19. The device according to claim 18, wherein The one or more processors are configured to determine an MPE event at least in part by receiving an MPE report or a beam switch request from a device.

20. The device according to claim 19, wherein The MPE report or beam switching request indicates one or more parameters, including at least one of: a band identifier, at least one cell identifier, at least one bandwidth part identifier, at least one uplink beam identifier of the original uplink beam, or at least one new beam identifier of the new uplink beam, and wherein the one or more processors are also configured to determine the other cell based at least in part on the one or more parameters.

21. The device according to claim 20, wherein: The band identifier identifies a plurality of cells or CCs on which an MPE event is determined, and wherein the one or more processors are further configured to send an indication to the plurality of cells to perform beam switching of the device.

22. The device according to claim 19, wherein The one or more processors are configured to receive an MPE report or a beam switching request on a Medium Access Control MAC control element CE, a Physical Uplink Control Channel PUCCH, or a Layer 3 report.

23. A method for wireless communication at a user equipment UE, comprising: detecting a maximum tolerated exposure (MPE) event on at least one CC of a plurality of component carriers (CC), wherein the at least one CC is configured with a first cell in an inter-band carrier aggregation (CA); as well as Based on detecting the MPE event and on a different CC among the multiple CCs, one of an MPE report or a beam switching request is sent to the second cell on the different CC among the multiple CCs, wherein the different CC is configured with the second cell in inter-band CA.

24. The method according to claim 23, further comprising: receiving, through the at least one CC and based on sending the MPE report or the beam switching request, a beam switching command from the first cell to switch to a new beam; as well as An uplink transmission is sent to the first cell based on the new beam.

25. The method according to claim 23, wherein: A first cell in inter-band CA uses a first frequency band having at least a first CC, and a second cell in inter-band CA uses the first frequency band or the second frequency band having at least a second CC.

26. The method of claim 23, wherein: The MPE report or beam switching request indicates a band identifier, at least one cell identifier, at least one bandwidth part identifier, at least one uplink beam identifier of the original uplink beam, or at least one new beam identifier of the new uplink beam.

27. The method according to claim 26, wherein: The band identifier identifies multiple cells or CCs on which the MPE event is detected, and also includes receiving a beam switching command from the first cell or the multiple cells through the at least one CC and based on sending an MPE report or a beam switching request to switch to a new beam on the multiple cells or CCs.

28. The method of claim 23, wherein: Sending the MPE report or the beam switching request includes sending the MPE report or the beam switching request on a medium access control MAC control element CE, a physical uplink control channel PUCCH or a layer 3 report.

29. The method of claim 23, further comprising sending one of an MPE report or a beam switching request to the first cell on the at least one CC based on detecting the MPE event.

30. A non-transitory computer-readable medium storing one or more instructions, wherein the one or more instructions, when executed by one or more processors of a user equipment (UE), cause the one or more processors to cause the UE to perform the method according to any one of claims 23-29.

31. An apparatus for use at a user equipment (UE), comprising means for performing the steps of the method according to any one of claims 23-29.

32. A computer program product comprising computer instructions which, when executed by a processor, perform the method according to any one of claims 23 to 29.

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