Techniques for antenna switching diversity management

Abstract

Various aspects of the present disclosure generally relate to wireless communications. In some aspects, an apparatus may determine a time-averaged power limit for an antenna set. The apparatus may modify an antenna switching configuration based at least in part on the time-averaged power limit. The apparatus may transmit a signal using an antenna in the antenna set associated with the modified antenna switching configuration, where the antenna is associated with a higher power limit than one or more other antennas. Numerous other aspects are described.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims priority to U.S. Provisional Patent Application No. 63 / 198,110, filed on September 29, 2020, entitled “TECHNIQUES FOR ANTENNA SWITCHED DIVERSITY MANAGEMENT,” and U.S. Non-Provisional Patent Application No. 17 / 448,651, filed on September 23, 2021, entitled “TECHNIQUES FOR ANTENNA SWITCHED DIVERSITY MANAGEMENT,” which are hereby expressly incorporated herein by reference.

[0003] public domain

[0004] Aspects of the present disclosure relate generally to wireless communications, and to techniques and apparatus for antenna switching diversity management.

[0005] Related technical description

[0006] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and long term evolution (LTE). LTE / LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP).

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

[0008] The above multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different UEs to communicate at a city, country, region, and / or global level. New Radio (NR), which may be referred to as 5G, is a set of enhancements to the LTE mobile standard promulgated by 3GPP. NR is designed to better support mobile broadband Internet access by using orthogonal frequency division multiplexing (OFDM) (CP-OFDM) with a cyclic prefix (CP) on the downlink, CP-OFDM and / or single carrier frequency division multiplexing (SC-FDM) (also known as discrete Fourier transform spread OFDM (DFT-s-OFDM) on the uplink, and supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation to improve spectrum efficiency, reduce costs, improve services, utilize new spectrum, and better integrate with other open standards. As the demand for mobile broadband access continues to grow, further improvements to LTE, NR, and other radio access technologies remain useful.

[0009] Overview

[0010] Some aspects described herein relate to a transmitting device for wireless communication. The transmitting device may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to determine a time-averaged power limit for each antenna in an antenna set. The one or more processors may be configured to modify an antenna switching configuration based at least in part on the time-averaged power limit. The one or more processors may be configured to transmit a signal using an antenna in the antenna set based at least in part on the modified antenna switching configuration, wherein the antenna is associated with a higher power limit than one or more other antennas in the antenna set.

[0011] Some aspects described herein relate to a wireless communication method performed by a transmitting device. The method may include determining a time-averaged power limit for each antenna in an antenna set. The method may include modifying an antenna switching configuration based at least in part on the time-averaged power limit. The method may include transmitting a signal using an antenna in the antenna set based at least in part on the modified antenna switching configuration, wherein the antenna is associated with a higher power limit than one or more other antennas in the antenna set.

[0012] Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication by a transmitting device. The set of instructions, when executed by one or more processors of the transmitting device, may cause the transmitting device to determine a time-averaged power limit for each antenna in an antenna set. The set of instructions, when executed by the one or more processors of the transmitting device, may cause the transmitting device to modify an antenna switching configuration based at least in part on the time-averaged power limit. The set of instructions, when executed by the one or more processors of the transmitting device, may cause the transmitting device to transmit a signal using an antenna in the antenna set based at least in part on the modified antenna switching configuration, where the antenna is associated with a higher power limit than one or more other antennas in the antenna set.

[0013] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for determining a time-averaged power limit for each antenna in an antenna set. The apparatus may include means for modifying an antenna switching configuration based at least in part on the time-averaged power limit. The apparatus may include means for transmitting a signal using an antenna in the antenna set based at least in part on the modified antenna switching configuration, wherein the antenna is associated with a higher power limit than one or more other antennas in the antenna set.

[0014] Some aspects described herein relate to a transmitting device for wireless communication. The transmitting device may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to determine a time-averaged power limit for an antenna set. The one or more processors may be configured to modify an antenna switching configuration based at least in part on the time-averaged power limit. The one or more processors may be configured to transmit a signal using an antenna in the antenna set that is associated with the modified antenna switching configuration, where the antenna is associated with a higher power limit than one or more other antennas.

[0015] Some aspects described herein relate to a wireless communication method performed by a transmitting device. The method may include determining a time-averaged power limit for an antenna set. The method may include modifying an antenna switching configuration based at least in part on the time-averaged power limit. The method may include transmitting a signal using an antenna in the antenna set associated with the modified antenna switching configuration, wherein the antenna is associated with a higher power limit than one or more other antennas.

[0016] Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication by a transmitting device. The set of instructions, when executed by one or more processors of the transmitting device, may cause the transmitting device to determine a time-averaged power limit for an antenna set. The set of instructions, when executed by the one or more processors of the transmitting device, may cause the transmitting device to modify an antenna switching configuration based at least in part on the time-averaged power limit. The set of instructions, when executed by the one or more processors of the transmitting device, may cause the transmitting device to transmit a signal using an antenna in the antenna set that is associated with the modified antenna switching configuration, where the antenna is associated with a higher power limit than one or more other antennas.

[0017] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for determining a time-averaged power limit for an antenna set. The apparatus may include means for modifying an antenna switching configuration based at least in part on the time-averaged power limit. The apparatus may include means for transmitting a signal using an antenna in the antenna set associated with the modified antenna switching configuration, wherein the antenna is associated with a higher power limit than one or more other antennas.

[0018] Aspects generally include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication devices, and / or processing systems substantially as described herein with reference to and as illustrated in the accompanying figures and description.

[0019] The foregoing has broadly outlined the features and technical advantages of examples according to the present disclosure in an effort to make the following detailed description better understood. Additional features and advantages will be described hereinafter. The concepts and specific examples disclosed can be readily used as a basis for modifying or designing other structures for implementing the same purposes as the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, both in terms of their organization and method of operation, as well as the associated advantages, will be better understood by considering the following description in conjunction with the accompanying drawings. Each of the figures is provided for illustration and description purposes and is not intended to define limitations on the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to understand in detail the features of the present disclosure set forth above, a more particular description of the content briefly summarized above may be obtained with reference to various aspects, some of which are illustrated in the accompanying drawings. It should be noted, however, that the accompanying drawings illustrate only certain typical aspects of the present disclosure and are not to be considered limiting of its scope, as the description may admit to other equally effective aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0022] Figure 1is a diagram illustrating an example of a wireless network according to the present disclosure.

[0023] Figure 2 is a diagram illustrating an example of a base station and a user equipment (UE) in communication in a wireless network according to the present disclosure.

[0024] Figure 3 is a diagram illustrating an example of dual connectivity according to the present disclosure.

[0025] Figures 4A-4C is a diagram illustrating an example associated with antenna switching diversity management according to the present disclosure.

[0026] Figure 5-7 is a diagram illustrating an example process associated with antenna switching diversity management according to the present disclosure.

[0027] Figure 8 is a block diagram of an example apparatus for wireless communication according to the present disclosure.

[0028] Detailed description

[0029] The various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure can be implemented in many different forms and should not be interpreted as being limited to any specific structure or function given throughout the present disclosure. Specifically, these aspects are provided to make the present disclosure thorough and complete, and they will fully convey the scope of the present disclosure to those skilled in the art. It should be appreciated by those skilled in the art that the scope of the present disclosure is intended to cover any aspect of the present disclosure disclosed herein, whether it is implemented independently or in combination with any other aspect of the present disclosure. For example, any number of aspects set forth herein can be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such devices or methods that are practiced using a supplement or other other structure, functionality, or structure and functionality as the various aspects of the present disclosure set forth herein. It should be understood that any aspect of the present disclosure disclosed herein can be implemented by one or more elements of the claims.

[0030] Several aspects of telecommunications systems will now be presented with reference to various devices and techniques. These devices and techniques are described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements can be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0031] Although aspects may be described herein using terminology generally associated with 5G or New Radio (NR) radio access technology (RAT), aspects of the present disclosure may be applied to other RATs, such as 3G RAT, 4G RAT, and / or RATs beyond 5G (e.g., 6G).

[0032] Figure 1 1 is a diagram illustrating an example of a wireless network 100 according to the present disclosure. Wireless network 100 may be a 5G (e.g., NR) network and / or a 4G (e.g., Long Term Evolution (LTE)) network, etc., or may include elements thereof. Wireless network 100 may include one or more base stations 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d), one or more user equipment (UE) 120 (shown as UE 120a, UE 120b, UE 120c, UE 120d, and UE 120e), and / or other network entities. Base station 110 is an entity that communicates with UE 120. Base station 110 (sometimes referred to as a BS) may include, for example, an NR base station, an LTE base station, a Node B, an eNB (e.g., in 4G), a gNB (e.g., in 5G), an access point, and / or a transmit reception point (TRP). Each base station 110 may provide communication coverage for a particular geographic area. In the 3rd Generation Partnership Project (3GPP), the term "cell" can refer to the coverage area of ​​a base station 110 and / or a base station subsystem serving that coverage area, depending on the context in which the term is used.

[0033] The base station 110 may provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by a UE 120 with a service subscription. A pico cell may cover a relatively small geographic area and may allow unrestricted access by a UE 120 with a service subscription. A femto cell may cover a relatively small geographic area (e.g., a residence) and may allow restricted access by a UE 120 associated with the femto cell (e.g., a UE 120 in a closed subscriber group (CSG)). A base station 110 used for a macro cell may be referred to as a macro base station. A base station 110 used for a pico cell may be referred to as a pico base station. A base station 110 used for a femto cell may be referred to as a femto base station or a home base station. In Figure 1 In the example shown in FIG, BS 110a may be a macro base station for macro cell 102a, BS 110b may be a pico base station for pico cell 102b, and BS 110c may be a femto base station (BS) for femto cell 102c. A base station may support one or more (e.g., three) cells.

[0034] In some examples, a cell may not necessarily be stationary, and the geographic area of ​​the cell may move depending on the location of a mobile base station 110 (e.g., a mobile base station). In some examples, base stations 110 may interconnect with each other and / or with one or more other base stations 110 or network nodes (not shown) in wireless network 100 via various types of backhaul interfaces (such as direct physical connections or virtual networks) using any suitable transport network.

[0035] The wireless network 100 may include one or more relay stations. A relay station is an entity that can receive transmissions of data from an upstream station (e.g., a base station 110 or a UE 120) and send transmissions of that data to a downstream station (e.g., a UE 120 or a base station 110). A relay station may be a UE 120 that is capable of relaying transmissions for other UEs 120. Figure 1 In the example shown in FIG, BS 110d (e.g., a relay base station) can communicate with BS 110a (e.g., a macro base station) and UE 120d to facilitate communication between BS 110a and UE 120d. Base station 110 that relays communication may be referred to as a relay station, relay base station, relay, etc.

[0036] The wireless network 100 may be a heterogeneous network including different types of base stations 110, such as macro base stations, pico base stations, femto base stations, or relay base stations, etc. These different types of base stations 110 may have different transmit power levels, different coverage areas, and / or different impacts on interference in the wireless network 100. For example, a macro base station may have a high transmit power level (e.g., 5 to 40 watts), while a pico base station, a femto base station, and a relay base station may have a lower transmit power level (e.g., 0.1 to 2 watts).

[0037] A network controller 130 may be coupled or in communication with a set of base stations 110 and may provide coordination and control for these base stations 110. The network controller 130 may communicate with the base stations 110 via backhaul communication links. The base stations 110 may communicate with each other directly or indirectly via wireless or wired backhaul communication links.

[0038] UEs 120 may be dispersed throughout wireless network 100, and each UE 120 may be stationary or mobile. UE 120 may include, for example, an access terminal, a terminal, a mobile station, and / or a subscriber unit. UE 120 may be a cellular phone (e.g., a smartphone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet device, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device, a biometric device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring or smart bracelet)), an entertainment device (e.g., a music device, a video device, and / or a satellite radio), an in-vehicle component or sensor, a smart meter / sensor, industrial manufacturing equipment, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium.

[0039] Some UEs 120 may be considered machine type communication (MTC) UEs, or evolved or enhanced machine type communication (eMTC) UEs. MTC UEs and / or eMTC UEs may include, for example, robots, drones, remote devices, sensors, meters, monitors, and / or location tags that may communicate with a base station, another device (e.g., a remote device), or some other entity. Some UEs 120 may be considered Internet of Things (IoT) devices, and / or may be implemented as NB-IoT (narrowband IoT) devices. Some UEs 120 may be considered client equipment. UE 120 may be included within a housing that houses components of UE 120, such as a processor component and / or a memory component. In some examples, the processor component and the memory component may be coupled together. For example, the processor component (e.g., one or more processors) and the memory component (e.g., memory) may be operatively coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0040] In general, any number of wireless networks 100 may be deployed in a given geographic area. Each wireless network 100 may support a specific RAT and may operate on one or more frequencies. A RAT may be referred to as a radio technology, air interface, etc. A frequency may be referred to as a carrier, frequency channel, etc. Each frequency may support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

[0041] In some examples, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) can use one or more sidelink channels to communicate directly (e.g., without using base station 110 as an intermediary to communicate with each other). For example, UE 120 can communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, or vehicle-to-pedestrian (V2P) protocols), and / or mesh networks. In such examples, UE 120 can perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by base station 110.

[0042] Devices of the wireless network 100 may communicate using an electromagnetic spectrum that may be subdivided into various categories, bands, channels, etc., based on frequency or wavelength. For example, each device of the wireless network 100 may communicate using one or more operating bands. In 5G NR, two initial operating bands have been identified as frequency range designations FR1 (410 MHz–7.125 GHz) and FR2 (24.25 GHz–52.6 GHz). It should be understood that although a portion of FR1 is greater than 6 GHz, FR1 is often (interchangeably) referred to as a “sub-6 GHz” band in various documents and articles. Similar naming issues sometimes arise regarding FR2, which is often (interchangeably) referred to as a “millimeter wave” band in various documents and articles, although it is different from the extremely high frequency (EHF) band (30 GHz–300 GHz) identified as a “millimeter wave” band by the International Telecommunication Union (ITU).

[0043] Frequencies between FR1 and FR2 are generally referred to as mid-band frequencies. Recent 5G NR research has identified the operating bands of these mid-band frequencies as frequency range designation FR3 (7.125 GHz–24.25 GHz). Frequency bands falling within FR3 can inherit FR1 characteristics and / or FR2 characteristics, and thus can effectively extend the features of FR1 and / or FR2 to mid-band frequencies. Additionally, higher frequency bands are currently being explored to extend 5G NR operation to above 52.6 GHz. For example, three higher operating bands have been identified as frequency range designations FR4a or FR4-1 (52.6 GHz–71 GHz), FR4 (52.6 GHz–114.25 GHz), and FR5 (114.25 GHz–300 GHz). Each of these higher frequency bands falls within the EHF band.

[0044] With the above examples in mind, unless otherwise specifically stated, it should be understood that, if used herein, the term sub-"6 GHz" or the like may broadly refer to frequencies that may be less than 6 GHz, may be within FR1, or may include mid-band frequencies. Furthermore, unless otherwise specifically stated, it should be understood that, if used herein, the term "millimeter wave" or the like may broadly refer to frequencies that may include mid-band frequencies, may be within FR2, FR4, FR4-a, FR4-1, or FR5, or may be within the EHF band. It is contemplated that the frequencies included in these operating bands (e.g., FR1, FR2, FR3, FR4, FR4-a, FR4-1, and / or FR5) may be modified, and that the techniques described herein are applicable to those modified frequency ranges. Some aspects described herein may include operation in concurrent frequency bands, such as concurrent sub-6 GHz bands and bands above 6 GHz (e.g., millimeter wave).

[0045] In some aspects, a transmitting device (e.g., UE 120) may include a communication manager 140. As described in greater detail elsewhere herein, the communication manager 140 may determine a time-averaged power limit for an antenna set; modify an antenna switching configuration based at least in part on the time-averaged power limit; and transmit a signal using an antenna in the antenna set associated with the modified antenna switching configuration, wherein the antenna is associated with a higher power limit than one or more other antennas. Additionally or alternatively, the communication manager 140 may perform one or more other operations described herein.

[0046] As indicated above, Figure 1 are provided as examples. Other examples may differ from those described in Figure 1 Examples described.

[0047] Figure 2 1 is a diagram illustrating an example 200 of a base station 110 and a UE 120 in communication in a wireless network 100 according to the present disclosure. The base station 110 may be equipped with a set of antennas 234a through 234t, such as T antennas (T ≥ 1). The UE 120 may be equipped with a set of antennas 252a through 252r, such as R antennas (R ≥ 1).

[0048] At base station 110, transmit processor 220 may receive data intended for UE 120 (or a group of UEs 120) from data source 212. Transmit processor 220 may select one or more modulation and coding schemes (MCS) for UE 120 based at least in part on one or more channel quality indicators (CQIs) received from UE 120. Base station 110 may process (e.g., encode and modulate) the data for UE 120 based at least in part on the MCS(s) selected for UE 120 and may provide data symbols to UE 120. Transmit processor 220 may process system information (e.g., for semi-static resource partitioning information (SRPI)) and control information (e.g., CQI requests, grants, and / or upper layer signaling), and provide overhead symbols and control symbols. The transmit processor 220 may generate reference symbols for reference signals (e.g., a cell-specific reference signal (CRS) or a demodulation reference signal (DMRS)) and synchronization signals (e.g., a primary synchronization signal (PSS) or a secondary synchronization signal (SSS)). The transmit (TX) multiple-input, multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, as applicable, and may provide a set of output symbol streams (e.g., T output symbol streams) to a corresponding set of modems 232 (e.g., T modulators) (shown as modems 232a through 232t). For example, each output symbol stream may be provided to a modulator component (shown as MOD) of a modem 232. Each modem 232 may process a corresponding output symbol stream (e.g., for OFDM) using a corresponding modulator component to obtain an output sample stream. Each modem 232 may further process (e.g., convert to analog, amplify, filter, and / or upconvert) the output sample stream using a corresponding modulator component to obtain a downlink signal. Modems 232a through 232t may transmit a set of downlink signals (e.g., T downlink signals) via a corresponding set of antennas 234 (e.g., T antennas) (shown as antennas 234a through 234t).

[0049] At UE 120, a set of antennas 252 (shown as antennas 252a through 252r) can receive downlink signals from base station 110 and / or other base stations 110 and can provide a set of received signals (e.g., R received signals) to a set of modems 254 (e.g., R modems) (shown as modems 254a through 254r). For example, each received signal can be provided to a demodulator component (shown as DEMOD) of modem 254. Each modem 254 can use a corresponding demodulator component to condition (e.g., filter, amplify, downconvert, and / or digitize) the received signal to obtain input samples. Each modem 254 can use the demodulator component to further process the input samples (e.g., for OFDM) to obtain received symbols. A MIMO detector 256 can obtain received symbols from modem 254, perform MIMO detection on the received symbols where applicable, and provide detected symbols. The receive processor 258 may process (e.g., demodulate and decode) the detected symbols, may provide decoded data for the UE 120 to a data sink 260, and may provide decoded control information and system information to a controller / processor 280. The term "controller / processor" may refer to one or more controllers, one or more processors, or a combination thereof. The channel processor may determine a reference signal received power (RSRP) parameter, a received signal strength indicator (RSSI) parameter, a reference signal received quality (RSRQ) parameter, and / or a CQI parameter, among other parameters. In some examples, one or more components of the UE 120 may be included in a housing 284.

[0050] The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292. The network controller 130 may include, for example, one or more devices in a core network. The network controller 130 may communicate with the base station 110 via the communication unit 294.

[0051] One or more antennas (e.g., antennas 234a through 234t and / or antennas 252a through 252r) may include or be included within one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, and / or one or more antenna arrays, etc. Antenna panels, antenna groups, sets of antenna elements, and / or antenna arrays may include one or more antenna elements (within a single housing or multiple housings), sets of coplanar antenna elements, sets of non-coplanar antenna elements, and / or antennas coupled to one or more transmit and / or receive components (such as antennas). Figure 2 One or more antenna elements of one or more components).

[0052] On the uplink, at UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information (e.g., for reports including RSRP, RSSI, RSRQ, and / or CQI) from a controller / processor 280. The transmit processor 264 may generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266, as applicable, further processed by a modem 254 (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to the base station 110. In some examples, the modem 254 of the UE 120 may include a modulator and a demodulator. In some examples, the UE 120 includes a transceiver. The transceiver may include any combination of antenna(s) 252, modem(s) 254, MIMO detector 256, receive processor 258, transmit processor 264, and / or TX MIMO processor 266. The transceiver may be used by a processor (eg, controller / processor 280) and memory 282 to perform aspects of any of the methods described herein (eg, with reference to Figures 4A to 8 ).

[0053] At base station 110, uplink signals from UE 120 and / or other UEs may be received by antenna 234, processed by modem 232 (e.g., a demodulator component of modem 232, shown as DEMOD), detected by MIMO detector 236, if applicable, and further processed by receive processor 238 to obtain decoded data and control information sent by UE 120. Receive processor 238 may provide decoded data to data sink 239 and decoded control information to controller / processor 240. Base station 110 may include a communication unit 244 and may communicate with network controller 130 via communication unit 244. Base station 110 may include a scheduler 246 to schedule one or more UEs 120 for downlink and / or uplink communications. In some examples, modem 232 of base station 110 may include a modulator and a demodulator. In some examples, base station 110 may include a transceiver. The transceiver may include any combination of antenna(s) 234, modem(s) 232, MIMO detector 236, receive processor 238, transmit processor 220, and / or TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to perform aspects of any of the methods described herein (e.g., with reference to FIG. Figure 4A-8 ).

[0054] The controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2Any other component(s) of the base station 110 may perform one or more techniques associated with antenna switching diversity management, as described in more detail elsewhere herein. For example, the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component(s) may perform or direct e.g. Figure 5 The process of 500 Figure 6 Process 600, or Figure 7 700, and / or operations of other processes as described herein. Memory 242 and memory 282 may store data and program codes for base station 110 and UE 120, respectively. In some examples, memory 242 and / or memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code and / or program code) for wireless communication. For example, the one or more instructions, when executed (e.g., directly or after compilation, conversion, and / or interpretation) by one or more processors of base station 110 and / or UE 120, may cause the one or more processors, UE 120, and / or base station 110 to perform or direct, for example Figure 5 The process of 500 Figure 6 Process 600, or Figure 7 The operations of process 700 and / or other processes described herein may be performed. In some examples, executing instructions may include running instructions, converting instructions, compiling instructions, and / or interpreting instructions, etc.

[0055] In some aspects, a transmitting device, such as a UE 120, includes: means for determining a time-averaged power limit for an antenna set; means for modifying an antenna switching configuration based at least in part on the time-averaged power limit; and / or means for transmitting a signal using an antenna in the antenna set associated with the modified antenna switching configuration, wherein the antenna is associated with a higher power limit than one or more other antennas. In some aspects, the means for the transmitting device to perform the operations described herein may include, for example, one or more of: the communications manager 140, the antenna 252, the demodulator 254, the MIMO detector 256, the receive processor 258, the transmit processor 264, the TX MIMO processor 266, the controller / processor 280, or the memory 282.

[0056] although Figure 2 The blocks in FIG. 2 are illustrated as distinct components, but the functionality described above with respect to these blocks may be implemented using a single hardware, software, or combined component or a combination of various components. For example, the functionality described with respect to the transmit processor 264, the receive processor 258, and / or the TX MIMO processor 266 may be performed by or under the control of the controller / processor 280.

[0057] As indicated above, Figure 2 are provided as examples. Other examples may differ from those described in Figure 2 Examples described.

[0058] Figure 3 is a diagram illustrating an example 300 of dual connectivity, which may be an applicable technique or techniques associated with antenna switching diversity management, in accordance with the present disclosure. Figure 3 The example shown in FIG is for Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA)-NR Dual Connectivity (ENDC) mode. In ENDC mode, the UE 120 communicates using the LTE RAT on a primary cell group (MCG) and the UE 120 communicates using the NR RAT on a secondary cell group (SCG). However, aspects described herein may be applicable to ENDC mode (e.g., where the MCG is associated with an LTE RAT and the SCG is associated with an NR RAT), NR-E-UTRA dual connectivity (NEDC) mode (e.g., where the MCG is associated with an NR RAT and the SCG is associated with an LTE RAT), NR dual connectivity (NRDC) mode (e.g., where the MCG is associated with an NR RAT and the SCG is also associated with an NRRAT), a multiple subscriber information module (MSIM) mode (e.g., MSIM dual receive, dual SIM, dual standby (DR-DSDS), or dual SIM dual active (DSDA) mode), a single SIM (SSIM) mode (e.g., an SSIM standalone mode associated with a RAT such as NR, LTE, Wideband CDMA (WCDMA), 1x, Global System for Mobile Communications (GSM), etc.), or another dual connectivity mode (e.g., where the MCG is associated with a first RAT and the SCG is associated with one of the first RAT or a second RAT). Additionally or alternatively, the various aspects described herein may be applicable to one or more carrier aggregation (CA) modes, such as NR inter-band uplink CA (UL-CA), LTE inter-band UL-CA, ENDC LTE CA, or NR sub-6 GHz (NR sub-6) CA, etc. ENDC mode is sometimes referred to as NR or 5G non-standalone (NSA) mode. Thus, as used herein, "dual connectivity mode" may refer to ENDC mode, NEDC mode, NRDC mode, and / or another type of dual connectivity mode. Although dual connectivity is described in terms of ENDC mode, in other dual connectivity modes, UE 120 may communicate on another type of RAT, such as Bluetooth RAT, WLAN, ultra-wideband (UWB) RAT, sub-6 RAT, etc. Furthermore, although some aspects are described herein in terms of dual connectivity, the various aspects described herein may be applicable to non-dual connectivity use cases.

[0059] like Figure 3 As shown in , UE 120 can communicate with both eNB (e.g., 4G base station 110) and gNB (e.g., 5G base station 110), and the eNB and gNB can communicate (e.g., directly or indirectly) with the 4G / LTE core network (shown as an evolved packet core (EPC) including a mobility management entity (MME), a packet data network gateway (PGW), a serving gateway (SGW), etc.). Figure 3 In some aspects, the eNB and gNB may be co-located at the same base station 110. In some aspects, the eNB and gNB may be included in different base stations 110 (e.g., may not be co-located).

[0060] like Figure 3 As further shown in

[0015] , in some aspects, a wireless network permitting operation in 5G NSA mode may permit such operation by using a primary cell group (MCG) for a first RAT (e.g., LTE RAT, 4G RAT, etc.) and a secondary cell group (SCG) for a second RAT (e.g., NR RAT, 5G RAT, etc.). In this scenario, a UE 120 may communicate with an eNB via the MCG and with a gNB via the SCG. In some aspects, the MCG may anchor the network connection between the UE 120 and the 4G / LTE core network (e.g., for mobility, coverage, control plane information, etc.), and the SCG may be added as an additional carrier to increase throughput (e.g., for data traffic, user plane information, etc.). In some aspects, the gNB and the eNB may not communicate user plane information between each other. In some aspects, a UE 120 operating in dual connectivity mode may be concurrently connected to an LTE base station 110 (e.g., an eNB) and an NR base station 110 (e.g., a gNB) (e.g., in the case of ENDC or NEDC), or may be concurrently connected to one or more base stations 110 using the same RAT (e.g., in the case of NRDC). In some aspects, an MCG may be associated with a first frequency band (e.g., a sub-6 GHz band and / or an FR1 band) and an SCG may be associated with a second frequency band (e.g., a mmWave band and / or an FR2 band).

[0061] The UE 120 may communicate via the MCG and SCG using one or more radio bearers (e.g., data radio bearers (DRBs), signaling radio bearers (SRBs), etc.). For example, the UE 120 may transmit or receive data via the MCG and / or SCG using one or more DRBs. Similarly, the UE 120 may transmit or receive control information (e.g., radio resource control (RRC) information, measurement reports, etc.) using one or more SRBs. In some aspects, a radio bearer may be dedicated to a particular cell group (e.g., a radio bearer may be an MCG bearer, an SCG bearer, etc.). In some aspects, a radio bearer may be a split radio bearer. Split radio bearers may be split in the uplink and / or in the downlink. For example, the DRB may be split on the downlink (e.g., the UE 120 may receive downlink information for the MCG or SCG in the DRB) but not split on the uplink (e.g., the uplink may not be split from the primary path to the MCG or SCG such that the UE 120 transmits in the uplink only on the primary path). In some aspects, a DRB can be split from the primary path to the MCG or SCG on the uplink. The DRB that is split in the uplink can use the primary path to transmit data until the size of the uplink transmit buffer meets the uplink data split threshold. If the uplink transmit buffer meets the uplink data split threshold, the UE 120 can use the DRB to transmit data to the MCG or SCG.

[0062] As indicated above, Figure 3 are provided as examples. Other examples may differ from those described in Figure 3 Examples described.

[0063] In some communication systems, a transmitting device, such as a UE (e.g., which may have 2 antennas, 4 antennas, or another number of antennas), may use antenna switching diversity (Asdiv) to select from a plurality of different antenna switching configurations. For example, the transmitting device may select one or more of the plurality of antennas to use for transmission. This allows the transmitting device to overcome connectivity issues, such as in situations where the hand or head of a user of the transmitting device is positioned to block the antennas. For example, when the user's hand covers a first antenna at a first position on the transmitting device, the transmitting device may detect a connectivity issue with the first antenna and may select a second antenna that is not covered by the user's hand and does not experience the connectivity issue. In other examples, the transmitting device may use Asdiv to overcome antenna imbalance or radio propagation shadowing effects, as well as other examples of problems that the transmitting device may use Asdiv to overcome.

[0064] When performing Asdiv, the transmitting device may evaluate one or more metrics to determine which antenna or antenna switching configuration to select from a plurality of available antennas or antenna switching configurations. For example, the transmitting device may determine one or more of the following: reference signal received power (RSRP), signal-to-noise ratio (SRN), transmit power headroom (e.g., which may be determined on a per-antenna basis relative to a maximum transmit power), excess transmit power timing parameters (e.g., the percentage of time the transmit power of an antenna exceeds a transmit power threshold (such as a maximum transmit power threshold)), sensor parameters (e.g., a proximity sensor may receive or detect input or sensor data that may be used to identify whether a user's hand, head, or another object is covering an antenna), or another specified input, etc.

[0065] As an example of a specified threshold, a transmitting device may be required (e.g., by a regulatory body) to comply with a Specific Absorption Rate (SAR) threshold. The SAR threshold may be a maximum absorbed power per unit mass (e.g., in milliwatts per gram (mW / g)). To comply with a SAR threshold or a power density (PD) threshold (e.g., in milliwatts per square centimeter (mW / cm2), the transmitting device may be required (e.g., by a regulatory body) to comply with a SAR threshold or a power density (PD) threshold (e.g., in milliwatts per square centimeter (mW / cm2). 2 ) meter), the transmitting device may limit the maximum transmit power when transmitting in proximity to a human user, for example. In some cases, the transmitting device may limit the maximum transmit power to comply with a combined exposure metric (e.g., an exposure metric that combines SAR and power density, such as may occur in multimode transmission). When performing Asdiv, the transmitting device may use static emission limits to evaluate which antenna to use based on the antenna's measured SAR or power density. Static emission limits may be defined on a per-technology basis, a per-band basis, a per-Device State Index (DSI) basis (e.g., different emission limits may be used depending on the device orientation or the presence of a user's hand, as determined using a proximity sensor, accelerometer, or gyroscope sensor), a per-antenna basis, and the like. The transmitting device may limit the antenna transmit power to comply with a SAR threshold or a power density threshold, which may be referred to as a SAR backoff procedure or a power density reduction procedure, respectively. For example, when the transmitting device has a maximum transmit power of 23 decibel-mW (dBm), the transmitting device may apply a SAR backoff value of 2 dBm so that the maximum value of the maximum transmit power after SAR backoff is 21 dBm.

[0066] However, using static SAR limits or static power density limits for the Asdiv evaluation of antenna switching configurations may result in excessive SAR backoff or power density reduction during scenarios where such SAR backoff or power density reduction is unnecessary. Some aspects described herein may utilize time averaging for SAR limiting. However, using static power limits with time-averaged metrics may fail to account for changes in the time-averaged metrics when selecting antenna switching configurations. Some aspects described herein may introduce time-averaged power limits to account for the time averaging of metrics such as SAR in radio frequency bands below 6 GHz, power density in radio frequency bands above 6 GHz, or a combination of SAR and power density during concurrent millimeter wave operation at multiple radio frequency bands. In this way, the time-averaged power limit used in Asdiv to select an antenna switching configuration may be updated based on updates to the time-averaged metrics after the time averaging window for the time-averaged metrics expires. In this way, a UE may be able to meet, for example, a SAR threshold while improving antenna selection, thereby achieving improved connectivity for the transmitting device.

[0067] For example, a real-time SAR (RT-SAR) or smart transmit (STX) procedure may be introduced, in which a transmitting device determines a time-averaged SAR over a time-averaging window. In this case, the transmitting device may determine the RT-SAR value based at least in part on measurements of past transmitting device power levels relative to radio frequency (RF) exposure limits set by, for example, a regulatory body, a standard, or a selected configuration.

[0068] When time-averaging the SAR to determine the RT-SAR value, the transmitting device may determine the time window (T RT-SAR_窗口 ) in the maximum permissible transmit power (P 限制 ). The time-averaged RT-SAR values ​​provide information about the P that can be used to determine the allowed 限制 The SAR value budget. Based on the fact that RT-SAR is time-averaged, P 限制 It is also time-averaged. The SAR-based procedure provides a limit on how much power an antenna is allowed to transmit to meet the SAR limit. Since different antennas may have different SAR limits based on their respective proximity to a person, the determination of the Asdiv-based antenna switching as described herein enables the use of different SAR limits to optimize the transmit power without exceeding the SAR limit. The RT-SAR value and the corresponding time-averaged P for each antenna are determined based on time-averaging the SAR. 限制 , the Asdiv antenna switching procedure can use accurate time average P in antenna switching decision 限制 Value to perform Asdiv.

[0069] The transmitting device can use RT-SAR P 限制 value and / or similar power density P 限制 The corresponding P value of each antenna in the active operating RF band or RAT is updated 限制 In contrast to using, for example, power headroom (PHR), which is an active approach (e.g., based on active or ongoing transmissions at corresponding transmit powers) to control transmit antennas, using P 限制 The transmitting device can use P to control the transmitting antenna. 限制 The Asdiv algorithm is evaluated based on the value, RSRP, SNR, transmit PHR, the percentage of time the transmit power exceeds the maximum transmit power, or sensor input to select the antenna switching configuration, as described above. Although some aspects are described in terms of SAR thresholds, other time-averaged power limits may also be used, such as a time-averaged power limit related to power density, etc.

[0070] Figures 4A-4C is a diagram illustrating an example 400 associated with antenna switching diversity management according to the present disclosure. Figure 4A As shown in , base station 110 and UE 120 (eg, a transmitting device) may communicate with each other. Although some aspects are described with the transmitting device being a UE, the transmitting device may be another type of transmitting device, such as a base station.

[0071] As in Figure 4A As further illustrated in FIG. 4 and by reference numeral 405, UE 120 may transmit a first signal to base station 110. For example, UE 120 may select an antenna using a first antenna switching configuration and may transmit the first signal to base station 110 using the first antenna switching configuration.

[0072] As in Figure 4A As further illustrated in FIG. 4 and by reference numerals 410 and 415, the UE 120 may use the time-averaged power limit to determine a SAR limit (e.g., the SAR limit is based at least in part on a transmit power limit that is based at least in part on the measured SAR of one or more antennas) and may update an antenna switching configuration (e.g., which may include switching antennas). The antenna switching configuration may include a selection of antennas or a selection of one or more rules for selecting or switching antennas. For example, the UE 120 may switch antennas according to the antenna switching configuration when a first antenna being used by the UE 120 does not meet one or more criteria of the antenna switching configuration but a second antenna not being used by the UE 120 does meet the one or more criteria. In other words, the UE 120 may use the antenna switching configuration based on the time-averaged P 限制The antenna switching configuration that takes into account the SAR of the value of ΔH is used instead of using an antenna switching configuration that only uses other time-averaged antenna metrics (such as channel quality metrics).

[0073] In some aspects, UE 120 may determine T RT-SAR_窗口 RT-SAR P 限制 The RT-SAR P can be determined for operation in the sub-6 GHz radio frequency (RF) band. 限制 .P 限制 may represent an RT-SAR transmit power limit determined based at least in part on one or more RT-SAR real-time illumination estimates or illumination determinations for operation in the sub-6 GHz operating RF band. Additionally or alternatively, UE 120 may determine T PD窗口 Power density (PD)P 限制 The PD P may be determined for operation in RF bands above 6 GHz. 限制 For example, UE 120 can RT-SAR_窗口 or T PD_窗口 The transmit power limits for SAR exposure or PD are averaged to determine P 限制 In this case, UE 120 may determine P on a per RF band basis, a per RAT basis, a per DSI basis, a per antenna basis, etc. 限制 .

[0074] In some aspects, UE 120 may determine P for multiple different antennas. 限制 For example, UE 120 may determine the P values ​​of active antennas (e.g., antennas selected using the antenna switching configuration) or inactive antennas (e.g., antennas not selected using the antenna switching configuration) that are all associated with a common RF band or RAT. 限制 In this case, UE 120 may use RT-SAR components (e.g., Figure 8 P 限制 Determine component 808) application programming interface (API) to obtain the Asdiv component (e.g., Figure 8 Asdiv evaluation component 810) combined with P 限制 As mentioned above, although some aspects are described in terms of RT-SAR, aspects may be applicable to other power constraints. For example, UE 120 may determine P for power density procedures. 限制 etc.

[0075] In some aspects, UE 120 may determine the power limit based at least in part on evaluating the time-averaged power limit (e.g., P 限制 ) to reconfigure the measurement configuration. For example, UE 120 may determine the P of the active antenna 限制Relative to the previous P of the active antenna 限制 In some implementations, P 限制 may change as a result of the presence of a relatively large amount of data activity with high transmit power usage occurring during a first time window followed by a relatively small (or no) amount of data activity occurring during a second time window. Additionally or alternatively, P 限制 The change may be based on the user changing the location of UE 120 (e.g., from being relatively close to the user to being relatively far away from the user) and UE 120 detecting the changed location. In this case, UE 120 may determine to change the frequency of measurements used for Asdiv evaluation, such as RSRP measurements, SNR measurements, etc. In this way, UE 120 may, for example, increase the frequency of these measurements to account for faster P 限制 Changes to ensure compliance with P 限制 Faster antenna switching.

[0076] like Figure 4B As shown in FIG, UE 120 may determine P as an iterative process. 限制 For example, after the time window has elapsed (e.g., T RT-SAR_窗口 or T PD_窗口 ), UE 120 may obtain P from the RT-SAR component (eg, using the API as described above). 限制 Update, and use the Asdiv component to use the updated P 限制 To evaluate the antenna switching configuration. In this case, UE 120 may repeat the Asdiv component evaluation for each time window. In another example, UE 120 may use the same method used to update P 限制 For example, UE 120 may repeat the Asdiv component calculation at different periodicities in the time window of P 限制 The Asdiv component is used to update the antenna switching configuration when a threshold amount is changed (e.g., UE 120 may 限制 (a) determining an updated antenna switching configuration when the change in the antenna switching configuration is less than a threshold amount; and (b) skipping determining an updated antenna switching configuration when the change in the antenna switching configuration is less than a threshold amount.) Although some examples are described with time-averaged RT-SAR values ​​(e.g., for operating bands below 6 GHz), other time-averaged parameters are possible, such as time-averaged power density (PD) values ​​(e.g., for mmWave RATs operating bands above 6 GHz), or a combination of RT-SAR and PD values, etc.

[0077] As an example of using the Asdiv component to determine antenna switching configurations, UE 120 may use the Asdiv component and determine the antenna switching configuration based at least in part on RSRP measurements and updated P from the RT-SAR component. 限制to evaluate the antennas of UE 120. For example, UE 120 may perform RSRP measurements using antennas of UE 120 (e.g., antennas for RATs in active RF bands, which UE 120 may periodically filter and evaluate for Asdiv switching). In this case, UE 120 may determine a delta value representing the difference between the transmit power limit of the active antenna and the transmit power limit of the target candidate antenna, where the higher transmit power limit biases the selection toward the associated antenna. In addition, UE 120 may determine whether the difference between the RSRP of the target candidate antenna and the RSRP of the active antenna exceeds the sum of the RSRP threshold and the delta value. If true (if it exceeds the sum), UE 120 may select the RSRP of the target candidate antenna as the selected RSRP and select the associated target candidate antenna as the antenna to switch to. Similarly, UE 120 may select the power headroom of the target candidate antenna based at least in part on the selection criteria (such as in Figure 4C , by convention, the power headroom may be positive when the transmit power is less than the maximum transmit power and may be negative when the transmit power is greater than the maximum transmit power). In situations where an antenna is not being used for packet transmission, the UE 120 may estimate a power headroom (which may be referred to as a "virtual power headroom" or "virtual PHR") based at least in part on a path loss component estimate, a modulation and coding scheme type (e.g., a specified value), a downlink path loss factor (e.g., which may be derived from RSRP measurements), and other example parameters. Additionally or alternatively, the UE 120 may estimate a power headroom based on comparing the metrics of the target candidate antennas and the metrics of the active antennas with a threshold and a power limit (e.g., P) averaged over time. 限制 ) is compared to determine whether one or more other metrics are selected metrics that meet the selection criteria. In this case, when the selection criteria related to the aforementioned parameters are met, as described in more detail herein, UE 120 may select the metric as the selected metric and may select the associated antenna as the selected antenna.

[0078] Based at least in part on identifying one or more selected metrics, UE 120 may select an antenna (e.g., using a single metric, multiple weighted metrics, etc.) and may determine to switch to the selected antenna. Figure 2 The described antenna switching configuration switches antennas and reconfigures corresponding Tx / Rx chains (eg, which may be affected as a result of sharing antennas within a common RF band or RAT or different RF bands or RATs).

[0079] As in Figure 4AAs further shown in FIG4 and by reference numeral 420, UE 120 may transmit a second signal to base station 110. For example, based at least in part on determining the second antenna switching configuration, UE 120 may select an antenna using the second antenna switching configuration and may transmit the second signal to base station 110 using the second antenna switching configuration.

[0080] As indicated above, Figures 4A-4C are provided as examples. Other examples may differ from those described in Figures 4A-4C The content described.

[0081] Figure 5 is a diagram illustrating an example process 500, performed, for example, by a transmitting device, in accordance with the present disclosure. Example process 500 is an example in which a transmitting device (eg, UE 120) performs operations associated with antenna switching diversity management.

[0082] like Figure 5 As shown in , in some aspects, process 500 may include determining a time-averaged power limit for each antenna in an antenna set (block 510). For example, a transmitting device (e.g., using Figure 8 P depicted in 限制 Determining component 808) can determine a time-averaged power limit for each antenna in the antenna set, as described above.

[0083] like Figure 5 As further shown in FIG. 5 , in some aspects, process 500 may include modifying the antenna switching configuration based at least in part on the time-averaged power limit (block 520). For example, a transmitting device (e.g., using Figure 8 The Asdiv evaluation component 810 depicted in FIG can modify the antenna switching configuration based at least in part on the time-averaged power limit, as described above.

[0084] like Figure 5 As further shown in FIG. 5 , in some aspects, process 500 may include transmitting a signal using an antenna in the antenna set based at least in part on the modified antenna switching configuration, wherein the antenna is associated with a higher power limit than one or more other antennas in the antenna set (block 530). For example, a transmitting device (e.g., using Figure 8 The transmitting component 804 depicted in FIG may transmit signals using an antenna in the antenna set based at least in part on the modified antenna switching configuration, as described above. In some aspects, the antenna is associated with a higher power limit than one or more other antennas in the antenna set.

[0085] Process 500 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0086] In a first aspect, the time-averaged power limit is a real-time specific absorption rate (RT-SAR) power limit.

[0087] In a second aspect, alone or in combination with the first aspect, the time-averaged power limit is determined on at least one of a per-antenna basis, a per-RF band basis, a per-device state index basis, or a per-radio technology basis.

[0088] In a third aspect, alone or in combination with one or more of the first and second aspects, process 500 includes selecting an antenna using a modified antenna switching configuration based at least in part on one or more antenna parameters, wherein the one or more antenna parameters include at least one of a reference signal received power, a signal-to-noise ratio, a transmit power headroom, a maximum transmit power, an excess transmit power timing parameter, a sensor parameter, or a time-averaged power limit.

[0089] In a fourth aspect, alone or in combination with one or more of the first to third aspects, determining a time-averaged power limit comprises determining a time-averaged power limit based at least in part on a time-averaged illumination determination.

[0090] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the time-averaged illumination determination is determined for a time window associated with a time-averaged power limit.

[0091] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, determining the time-averaged power limit includes determining the time-averaged power limit for at least one of a transmit antenna of the transmitting device or one or more other antennas of the transmitting device, wherein the antenna and the one or more other antennas are associated with a common radio frequency band of the transmitting device.

[0092] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, the time-averaged power limit is re-determined for each new time window.

[0093] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, process 500 includes: switching from the one or more other antennas associated with the lower power limit to the antenna associated with the higher power limit based at least in part on the modified antenna switching configuration; and reconfiguring a transmit chain or a receive chain corresponding to the one or more other antennas or the antenna based at least in part on the modified antenna switching configuration.

[0094] In a ninth aspect, either alone or in combination with one or more of aspects one to eight, process 500 comprises determining that a time-averaged power limit differs from a previous time-averaged power limit by a threshold amount; and changing a measurement frequency based at least in part on determining that the time-averaged power limit differs from a previous time-averaged power limit by the threshold amount.

[0095] In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, the measurement frequency is for at least one of a reference signal received power measurement or a signal-to-noise ratio measurement.

[0096] In an eleventh aspect, alone or in combination with one or more of the first to tenth aspects, the process 500 includes switching to the antenna from another antenna having a lower power limit than the antenna according to the modified antenna switching configuration.

[0097] although Figure 5 Example blocks of process 500 are shown, but in some aspects, process 500 may include Figure 5 5. In some embodiments, the process 500 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in FIG. Additionally or alternatively, two or more blocks of process 500 may be executed in parallel.

[0098] Figure 6 is a diagram illustrating an example process 600, performed, for example, by a transmitting device, in accordance with the present disclosure. Example process 600 is an example in which a transmitting device (eg, UE 120) performs operations associated with antenna switching diversity management.

[0099] like Figure 6 As shown in , in some aspects, process 600 may include determining a time-averaged power limit (block 610). For example, a transmitting device (e.g., using Figure 8 P depicted in 限制 Determining component 808) can determine P 限制 and may be based at least in part on the value of P 限制 In this case, the transmitting device can determine the incremental value P 限制_增量 =P 限制_当前 –P 限制_目标 , where P 限制_当前 Indicates the current antenna's P 限制 The value of P 限制_目标 P represents the target antenna 限制 In some aspects, the transmitting device may determine the P value of each of the multiple target antennas that the transmitting device is to consider for switching. 限制_增量 .

[0100] like Figure 6As shown in , in some aspects, process 600 may include determining antennas associated with selected RSRP values ​​for an antenna set (block 620). Figure 8 The Asdiv evaluation component 810 depicted in FIG. 1 may determine the antenna associated with the selected RSRP value for the antenna set. In this case, the transmitting device may determine whether the selection criteria are met. For example, the transmitting device may determine the RSRP 目标 –RSRP 当前 RSRP 阈值 +P 限制_增量 , where RSRP 目标 Indicates the RSRP of the target antenna, RSRP 当前 Indicates the RSRP of the current antenna, and RSRP 阈值 represents a configurable threshold parameter. In this case, when the selection criterion evaluates to true, the transmitting device may select the RSRP of the target antenna as the selected RSRP and may select the associated antenna as the selected antenna. In some aspects, the transmitting device may evaluate the selection criterion for each possible target antenna.

[0101] like Figure 6 As further shown in FIG. 6 , in some aspects, process 600 may include modifying the antenna switching configuration based at least in part on the time-averaged power limit (block 630). For example, a transmitting device (e.g., using Figure 8 The Asdiv evaluation component 810 depicted in FIG. 1 may modify the antenna switching configuration based at least in part on the time-averaged power limit, as described above. In some aspects, the transmitting device may select an antenna associated with an available selected RSRP for transmission. For example, based at least in part on the evaluation selection criteria, the transmitting device may select a new antenna as the current antenna and may reconfigure the transmit chain to use the new antenna, as described above. In some aspects, the transmitting device may select an antenna based at least in part on multiple factors, such as based at least in part on the selected RSRP, another parameter, another selection criteria, and the like.

[0102] like Figure 6 As further shown in FIG. 6 , in some aspects, process 600 may include transmitting a signal using the modified antenna switching configuration (block 640). For example, a transmitting device (e.g., using Figure 8 The transmission component 804 depicted in FIG can use the modified antenna switching configuration to transmit the signal, as described above. In this case, the transmitting device can use the selected target antenna to transmit the signal, as described above.

[0103] Process 600 may include additional aspects, such as any single aspect or any combination of aspects described in conjunction with one or more other processes described elsewhere herein.

[0104] although Figure 6 Example blocks of process 600 are shown, but in some aspects, process 600 may include Figure 6 6. In some embodiments, the process 600 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in FIG. Additionally or alternatively, two or more blocks of process 600 may be executed in parallel.

[0105] Figure 7 is a diagram illustrating an example process 700, performed, for example, by a transmitting device, in accordance with the present disclosure. Example process 700 is an example in which a transmitting device (eg, UE 120) performs operations associated with antenna switching diversity management.

[0106] like Figure 7 As shown in , in some aspects, process 700 may include determining a time-averaged power limit (block 710). For example, a transmitting device (e.g., using Figure 8 P depicted in 限制 Determining component 808) can determine P 限制 and may be based at least in part on the value of P 限制 In this case, the transmitting device can determine the incremental value P 限制_增量 =P 限制_当前 –P 限制_目标 , where P 限制_当前 Indicates the current antenna's P 限制 The value of P 限制_目标 P represents the target antenna 限制 In some aspects, the transmitting device may determine the P value of each of the multiple target antennas that the transmitting device is to consider for switching. 限制_增量 .

[0107] like Figure 7 As shown in , in some aspects, process 700 may include determining an antenna in an antenna set that is associated with a selected power headroom (PHR) value (block 720). For example, a transmitting device (e.g., using Figure 8 The Asdiv evaluation component 810 depicted in FIG. 1 may determine, for the antenna set, the antenna associated with the selected PHR value. In this case, the transmitting device may determine whether the selection criteria are met. For example, the transmitting device may determine the PHR 目标 –PHR 当前 >PHR 阈值 +P 限制_增量 , where PHR 目标 Indicates the PHR of the target antenna, PHR 当前 Indicates the PHR of the current antenna, and PHR 阈值represents a configurable threshold parameter. In this case, when the selection criterion evaluates to true, the transmitting device may select the PHR value of the target antenna as the selected PHR value and may select the associated target antenna as the selected antenna. In some aspects, the transmitting device may evaluate the selection criterion for each possible target antenna.

[0108] like Figure 7 As further shown in FIG. 7 , in some aspects, process 700 may include modifying the antenna switching configuration based at least in part on the time-averaged power limit (block 730). For example, a transmitting device (e.g., using Figure 8 The Asdiv evaluation component 810 depicted in FIG. 1 may modify the antenna switching configuration based at least in part on the time-averaged power limit, as described above. In some aspects, the transmitting device may select an antenna associated with the selected PHR for transmission. For example, based at least in part on the evaluation selection criteria, the transmitting device may select a new antenna as the current antenna and may reconfigure the transmit chain to use the new antenna, as described above. In some aspects, the transmitting device may select an antenna based at least in part on multiple factors, such as based at least in part on the selected PHR, another parameter, another selection criteria, and the like.

[0109] like Figure 7 As further shown in FIG. 7 , in some aspects, process 700 may include transmitting a signal using the modified antenna switching configuration (block 740). For example, a transmitting device (e.g., using Figure 8 The transmission component 804 depicted in FIG can use the modified antenna switching configuration to transmit the signal, as described above. In this case, the transmitting device can use the selected target antenna to transmit the signal, as described above.

[0110] Process 700 may include additional aspects, such as any single aspect or any combination of aspects described in conjunction with one or more other processes described elsewhere herein.

[0111] although Figure 7 Example blocks of process 700 are shown, but in some aspects, process 700 may include Figure 7 7. In some embodiments, the process 700 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in FIG. Additionally or alternatively, two or more blocks of process 700 may be executed in parallel.

[0112] Figure 88 is a block diagram of an example apparatus 800 for wireless communication. Apparatus 800 may be a transmitting device, or a transmitting device may include apparatus 800. In some aspects, apparatus 800 includes a receiving component 802 and a transmitting component 804, which may be in communication with each other (e.g., via one or more buses and / or one or more other components). As shown, apparatus 800 may use receiving component 802 and transmitting component 804 to communicate with another apparatus 806 (such as a UE, a base station, or another wireless communication device). As further shown, apparatus 800 may include P 限制 One or more of a determining component 808, an Asdiv evaluating component 810, or an antenna switching component 812, among others.

[0113] In some aspects, the apparatus 800 may be configured to perform the Figures 4A to 4C Additionally or alternatively, the apparatus 800 may be configured to perform one or more of the processes described herein, such as Figure 5 The process of 500 Figure 6 Process 600, or Figure 7 In some aspects, Figure 8 The apparatus 800 and / or one or more components shown in FIG. 8 may include a combination of the above Figure 2 Additionally or alternatively, Figure 8 One or more components shown in the above may be combined Figure 2 Additionally or alternatively, one or more components in the component set may be implemented at least in part as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and may be executed by a controller or processor to perform the function or operation of the component.

[0114] The receiving component 802 may receive communications (such as reference signals, control information, data communications, or a combination thereof) from the apparatus 806. The receiving component 802 may provide the received communications to one or more other components of the apparatus 800. In some aspects, the receiving component 802 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, among other examples) on the received communications and may provide the processed signals to one or more other components of the apparatus 806. In some aspects, the receiving component 802 may include a combination of the above. Figure 2 One or more antennas, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof of the described transmitting device.

[0115] The transmission component 804 may transmit communications (such as reference signals, control information, data communications, or a combination thereof) to the device 806. In some aspects, one or more other components of the device 806 may generate communications and may provide the generated communications to the transmission component 804 for transmission to the device 806. In some aspects, the transmission component 804 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, encoding, etc.) on the generated communications and may transmit the processed signals to the device 806. In some aspects, the transmission component 804 may include a combination of the above. Figure 2 One or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the described transmitting device. In some aspects, transmitting component 804 can be co-located with receiving component 802 in a transceiver.

[0116] P 限制 Determining component 808 can determine a time-averaged power limit. 限制 Determining component 808 can determine that the time-averaged power limit differs from the previous time-averaged power limit by a threshold amount. 限制 Determining component 808 can modify the measurement frequency based at least in part on determining that the time-averaged power limit differs from the previous time-averaged power limit by a threshold amount. 限制 The determination component 808 may include a combination of the above Figure 2 One or more antennas, demodulators, MIMO detectors, receive processors, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof, of the described transmitting device.

[0117] The Asdiv evaluation component 810 can modify the antenna switching configuration based at least in part on the time-averaged power limit. In some aspects, the Asdiv evaluation component 810 can include the above combined Figure 2 The transmitting device may include one or more antennas, demodulators, MIMO detectors, receive processors, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof. Transmitting component 804 may transmit signals using the modified antenna switching configuration.

[0118] The antenna switching component 812 may select an antenna using a modified antenna switching configuration based at least in part on one or more antenna parameters, wherein the one or more antenna parameters include at least one of a reference signal received power, a signal-to-noise ratio, a transmit power headroom, a maximum transmit power, an excess transmit power timing parameter, a sensor parameter, or a time-averaged power limit. The antenna switching component 812 may determine to switch antennas based at least in part on the modified antenna switching configuration. The antenna switching component 812 may cause the radio frequency device to reconfigure to switch antennas and corresponding transmit / receive chains based at least in part on the determination to switch antennas. In some aspects, the antenna switching component 812 may include a method in combination with the above. Figure 2 One or more antennas, demodulators, MIMO detectors, receive processors, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof, of the described transmitting device.

[0119] Figure 8 The number and arrangement of components shown in the FIG are provided as examples. In practice, there may be Figure 8 Components may include additional components, fewer components, different components, or differently arranged components than those shown in FIG. Figure 8 Two or more components shown in may be implemented in a single component, or Figure 8 The single component shown in may be implemented as multiple distributed components. Additionally or alternatively, Figure 8 The component set (e.g., one or more components) shown in FIG. 1 may perform the operations described as being performed by Figure 8 One or more functions performed by another set of components shown in FIG.

[0120] The following provides an overview of some aspects of the disclosure:

[0121] Aspect 1: A wireless communication method performed by an apparatus, comprising: determining a time-averaged power limit for each antenna in an antenna set; modifying an antenna switching configuration based at least in part on the time-averaged power limit; and transmitting a signal using an antenna in the antenna set based at least in part on the modified antenna switching configuration, wherein the antenna is associated with a higher time-averaged power limit than one or more other antennas in the antenna set.

[0122] Aspect 2: A method as in Aspect 1, wherein modifying the antenna switching configuration includes: switching from the one or more other antennas associated with the lower time-averaged power limit to the antenna associated with the higher time-averaged power limit based at least in part on the modified antenna switching configuration.

[0123] Aspect 3: The method of any one of Aspects 1 to 2, wherein switching from the one or more other antennas to the antenna comprises: reconfiguring a transmit chain or a receive chain corresponding to the one or more other antennas or the antenna based at least in part on the modified antenna switching configuration.

[0124] Aspect 4: The method of any one of aspects 1 to 3, wherein the time-averaged power limit is at least one of a real-time specific absorption rate (RT-SAR) power limit or a power density (PD) power limit.

[0125] Aspect 5: The method of any one of Aspects 1 to 4, wherein the time-averaged power limit is determined at least in part based on one of a per-antenna basis, a per-RF band basis, a per-device state index basis, or a per-radio technology basis.

[0126] Aspect 6: A method as in any of Aspects 1 to 5, wherein modifying the antenna switching configuration comprises selecting the antenna switching configuration based at least in part on one or more antenna parameters, wherein the one or more antenna parameters comprise at least one of: a reference signal received power, a signal-to-noise ratio, a transmit power headroom, a maximum transmit power, an excess transmit power timing parameter, a sensor parameter, or the time-averaged power limit.

[0127] Aspect 7: The method of any of aspects 1 to 6, wherein determining the time-averaged power limit comprises determining the time-averaged power limit based at least in part on a time-averaged illumination determination.

[0128] Aspect 8: The method of aspect 7, wherein the time-averaged illumination determination is determined for a time window associated with the time-averaged power limit.

[0129] Aspect 9: A method as in any of Aspects 1 to 8, wherein determining the time-averaged power limit comprises determining the time-averaged power limit for the antenna of the device or at least one of the one or more other antennas of the device, wherein the antenna and the one or more other antennas are associated with a common radio frequency band of the device.

[0130] Aspect 10: The method of any one of aspects 1 to 9, wherein the time-averaged power limit is re-determined for each new time window.

[0131] Aspect 11: The method of any one of Aspects 1 to 10, further comprising: determining that the time-averaged power limit differs from the previous time-averaged power limit by a threshold amount; and changing the measurement frequency based at least in part on determining that the time-averaged power limit differs from the previous time-averaged power limit by the threshold amount.

[0132] Aspect 12: The method of aspect 11, wherein the frequency frequency is for at least one of: reference signal received power measurement or signal-to-noise ratio measurement.

[0133] Aspect 13: An apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method as in one or more aspects of aspects 1-12.

[0134] Aspect 14: A device for wireless communication, comprising a memory and one or more processors coupled to the memory, the one or more processors configured to perform the method of one or more aspects of aspects 1-12.

[0135] Aspect 15: An apparatus for wireless communication, comprising at least one means for performing the method of one or more aspects of aspects 1-12.

[0136] Aspect 16: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method of one or more aspects of aspects 1-12.

[0137] Aspect 17: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions that, when executed by one or more processors of a device, causes the device to perform the method of one or more aspects of aspects 1-12.

[0138] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise form disclosed. Modifications and variations may be made in light of the above disclosure or may be acquired from practice of the aspects.

[0139] As used herein, the term "component" is intended to be broadly interpreted as a combination of hardware and / or hardware and software. "Software" should be broadly interpreted as meaning an instruction, an instruction set, a code, a code segment, a program code, a program, a subroutine, a software module, an application, a software application, a software package, a routine, a subroutine, an object, an executable, a thread of execution, a procedure, and / or a function, etc., whether it is described in software, firmware, middleware, microcode, hardware description language or other terms. As used herein, a "processor" is implemented with hardware and / or a combination of hardware and software. It will be apparent that the systems and / or methods described herein can be implemented in different forms of hardware and / or a combination of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit various aspects. Thus, the operation and behavior of these systems and / or methods are described herein without reference to specific software code, because those skilled in the art will understand that software and hardware can be designed to implement these systems and / or methods at least in part based on the description herein.

[0140] As used herein, "satisfying a threshold" may refer to a value being greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc., depending on the context.

[0141] Although specific feature combinations are described in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. Many of these features can be combined in a manner not specifically described in the claims and / or not disclosed in the specification. The disclosure of various aspects includes each dependent claim combined with each other claim in the claim set. As used herein, a phrase quoting "at least one of" a column item refers to any combination of these items, including single members. As an example, "at least one of a, b, or c" is intended to encompass: a, b, c, a+b, a+c, b+c, and a+b+c, as well as any combination with multiple identical elements (e.g., a+a, a+a+a, a+a+b, a+a+c, a+b+b, a+c+c, b+b, b+b+b, b+b+c, c+c, and c+c+c, or any other arrangement of a, b, and c).

[0142] The elements, actions or instructions used herein should not be interpreted as key or necessary unless explicitly described as such. Moreover, as used herein, the articles "one" and "a" are intended to include one or more projects and can be used interchangeably with "one or more". In addition, as used herein, the article "the" is intended to include one or more projects quoted in conjunction with the article "the", and can be used interchangeably with "one or more". In addition, as used herein, the terms "set (set)" and "group" are intended to include one or more projects and can be used interchangeably with "one or more". In the case of being intended to have only one project, the phrase "only one" or similar language is used. Moreover, as used herein, the terms "have", "contain", "comprise" etc. are intended to be open terms that do not limit the elements (for example, element "have" A can also have B) that they modify. In addition, the phrase "based on" is intended to mean "at least partially based on", unless otherwise explicitly stated. Furthermore, as used herein, the term "or" when used in a sequence is intended to be inclusive and used interchangeably with "and / or" unless expressly stated otherwise (e.g., when used in conjunction with "either of" or "only one of").

Claims

1. An apparatus for wireless communication, comprising: Memory; as well as one or more processors coupled to the memory, the memory and the one or more processors being configured to: determining that a first time-averaged power limit associated with a first time window for an antenna in the set of antennas and a second time-averaged power limit associated with a second time window for the antenna differ by at least a threshold amount; modifying an antenna switching configuration based at least in part on the first time-averaged power limit differing from the second time-averaged power limit by at least a threshold amount; as well as A signal is transmitted using a first antenna in the set of antennas based at least in part on the modified antenna switching configuration, wherein the first antenna is associated with a higher time-averaged power limit than one or more second antennas in the set of antennas.

2. The apparatus of claim 1 , wherein the one or more processors, when modifying the antenna switching configuration, are configured to: Switching from the one or more second antennas associated with the lower time-averaged power limit to the first antenna associated with the higher time-averaged power limit based at least in part on the modified antenna switching configuration.

3. The apparatus of claim 2 , wherein the one or more processors, when switching from the one or more second antennas to the first antenna, are configured to: A transmit chain or a receive chain corresponding to the one or more second antennas or the first antenna is reconfigured based at least in part on the modified antenna switching configuration.

4. The apparatus of claim 1, wherein the first time-averaged power limit is at least one of a real-time specific absorption rate (RT-SAR) power limit or a power density (PD) power limit.

5. The apparatus of claim 1 , wherein the first time-averaged power limit is determined at least in part based on one of a per-antenna basis, a per-RF band basis, a per-device state index basis, or a per-radio technology basis.

6. The apparatus of claim 1 , wherein the one or more processors, when modifying the antenna switching configuration, are configured to: The antenna switching configuration is selected based at least in part on one or more antenna parameters, wherein the one or more antenna parameters include at least one of: Reference signal received power, signal-to-noise ratio, Transmit power headroom, Maximum transmit power, Excess transmit power timing parameters, sensor parameters, or The first time-averaged power limit.

7. The apparatus of claim 1 , wherein the one or more processors are further configured to: The first time-averaged power limit is determined based at least in part on the time-averaged illumination determination.

8. The apparatus of claim 7, wherein the time-averaged illumination determination is determined for the first time window.

9. The apparatus of claim 1 , wherein the one or more processors are further configured to: A corresponding time-averaged power limit is determined for each antenna in the set of antennas, wherein one or more antennas in the set are associated with a common radio frequency band for the apparatus.

10. The apparatus of claim 1, wherein the time-averaged power limit of the antenna is re-determined for each new time window.

11. The apparatus of claim 1 , wherein the one or more processors are further configured to: The measurement frequency is altered based at least in part on the first time-averaged power limit differing from the second time-averaged power limit by at least the threshold amount.

12. The apparatus of claim 11, wherein the measurement frequency is for at least one of: a reference signal received power measurement or a signal-to-noise ratio measurement.

13. A wireless communication method performed by an apparatus, comprising: determining that a first time-averaged power limit associated with a first time window for an antenna in the set of antennas and a second time-averaged power limit associated with a second time window for the antenna differ by at least a threshold amount; modifying an antenna switching configuration based at least in part on the first time-averaged power limit differing from the second time-averaged power limit by at least a threshold amount; as well as A signal is transmitted using a first antenna in the set of antennas based at least in part on the modified antenna switching configuration, wherein the first antenna is associated with a higher time-averaged power limit than one or more second antennas in the set of antennas.

14. The method of claim 13, wherein modifying the antenna switching configuration comprises: Switching from the one or more second antennas associated with the lower time-averaged power limit to the first antenna associated with the higher time-averaged power limit based at least in part on the modified antenna switching configuration.

15. The method of claim 14, wherein switching from the one or more second antennas to the first antenna comprises: A transmit chain or a receive chain corresponding to the one or more second antennas or the first antenna is reconfigured based at least in part on the modified antenna switching configuration.

16. The method of claim 13, wherein the first time-averaged power limit is at least one of a real-time specific absorption rate (RT-SAR) power limit or a power density (PD) power limit.

17. The method of claim 13, wherein the first time-averaged power limit is determined based at least in part on one of a per-antenna basis, a per-RF band basis, a per-device state index basis, or a per-radio technology basis.

18. The method of claim 13, wherein modifying the antenna switching configuration comprises: The antenna switching configuration is selected based at least in part on one or more antenna parameters, wherein the one or more antenna parameters include at least one of: Reference signal received power, signal-to-noise ratio, Transmit power headroom, Maximum transmit power, Excess transmit power timing parameters, sensor parameters, or The first time-averaged power limit.

19. The method of claim 13, wherein determining the first time-averaged power limit comprises: The first time-averaged power limit is determined based at least in part on the time-averaged illumination determination.

20. The method of claim 19, wherein the time-averaged illumination determination is determined for the first time window.

21. The method of claim 13, comprising: A corresponding time-averaged power limit is determined for each antenna in the set of antennas, wherein one or more antennas in the set are associated with a common radio frequency band for the apparatus.

22. The method of claim 13, wherein the time-averaged power limit of the antenna is re-determined for each new time window.

23. The method of claim 13, further comprising: The measurement frequency is altered based at least in part on the first time-averaged power limit differing from the second time-averaged power limit by at least the threshold amount.

24. The method of claim 23, wherein the measurement frequency is for at least one of: a reference signal received power measurement or a signal-to-noise ratio measurement.

25. A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising: One or more instructions that, when executed by one or more processors of a device, cause the device to: determining that a first time-averaged power limit associated with a first time window for an antenna in the set of antennas and a second time-averaged power limit associated with a second time window for the antenna differ by at least a threshold amount; modifying an antenna switching configuration based at least in part on the first time-averaged power limit differing from the second time-averaged power limit by at least a threshold amount; as well as A signal is transmitted using a first antenna in the set of antennas based at least in part on the modified antenna switching configuration, wherein the first antenna is associated with a higher time-averaged power limit than one or more second antennas in the set of antennas.

26. The non-transitory computer-readable medium of claim 25, wherein the one or more instructions that cause the apparatus to modify the antenna switching configuration cause the apparatus to: Switching from the one or more second antennas associated with the lower time-averaged power limit to the first antenna associated with the higher time-averaged power limit based at least in part on the modified antenna switching configuration.

27. The non-transitory computer-readable medium of claim 26, wherein the one or more instructions that cause the apparatus to switch from the one or more second antennas to the first antenna cause the apparatus to: A transmit chain or a receive chain corresponding to the one or more second antennas or the first antenna is reconfigured based at least in part on the modified antenna switching configuration.

28. The non-transitory computer readable medium of claim 25, wherein the first time-averaged power limit is at least one of a real-time specific absorption rate (RT-SAR) power limit or a power density (PD) power limit.

29. A device for wireless communication, comprising: means for determining that a first time-averaged power limit associated with a first time window for an antenna in the set of antennas differs from a second time-averaged power limit associated with a second time window for the antenna by at least a threshold amount; means for modifying an antenna switching configuration based at least in part on the first time-averaged power limit differing from the second time-averaged power limit by at least a threshold amount; as well as Means for transmitting a signal using a first antenna in the set of antennas based at least in part on the modified antenna switching configuration, wherein the first antenna is associated with a higher time-averaged power limit than one or more second antennas in the set of antennas.

30. The apparatus of claim 29, wherein the means for modifying the antenna switching configuration is configured to: Means for switching from the one or more second antennas associated with the lower time-averaged power limit to the first antenna associated with the higher time-averaged power limit based at least in part on the modified antenna switching configuration.

31. The apparatus of claim 29, further comprising means for performing the method of any one of claims 15-24.

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