MAXIMUM PERMITTED EXPOSURE RESTRICTION MITIGATION (MPE) BASED ON USER EQUIPMENT (EU) FEEDBACKS

专利摘要:
These are wireless communication systems and methods related to mitigating maximum allowable exposure (MPE) restrictions based on user equipment (UE) feedback. A first wireless communication device transmits to a second wireless communication device a plurality of reports, each report indicating an allowable transmit power level in the first wireless communication device that satisfies an MPE parameter. The first wireless communication device receives from the second wireless communication device a first configuration based on an MPE profile associated with the first wireless communication device in response to the plurality of reports. The first wireless communication device transmits to the second wireless communication device a first communication signal over a first beam based on the first configuration.
公开号:BR112020016237A2
申请号:R112020016237-0
申请日:2019-01-25
公开日:2020-12-15
发明作者:Vasanthan Raghavan；Sundar Subramanian；Ashwin Sampath；Junyi Li
申请人:Qualcomm Incorporated；
IPC主号:

专利说明:

[0001] [0001] This application claims the priority and benefit of US Non-Provisional Patent Application No. 16/256,603, filed on January 24, 2019, and US Provisional Patent Application No. 62/710,421, filed on February 16, 2019 2018, which are incorporated by reference in their entirety as if they were fully presented below and for all applicable purposes. FIELD OF TECHNIQUE
[0002] [0002] The technology discussed in this disclosure generally pertains to wireless communication systems and methods, and more particularly to the mitigation of maximum allowable exposure (MPE) restrictions for network-assisted millimeter wave (mmWave) transmissions. Certain modalities may allow and provide enhanced communication techniques to a base station (BS) to collect historical or statistical UL transmit power information from user equipment devices (UEs) and to determine UL transmission settings for the UEs based on collected histories or statistics. INTRODUCTION
[0003] [0003] Wireless communication systems are widely deployed to provide various types of communication content such as voice, video, packet data,
[0004] [0004] To meet the increasing demands of expanded mobile broadband connectivity, wireless communication technologies are advancing from LTE technology to next generation new radio (NR) technology. One technique to expand connectivity might be to extend the frequency operating range to higher frequencies, as lower frequencies are becoming super-congested. For example, mm wave frequency bands between about 30 gigahertz (GHz) to about 300 GHz can provide a large bandwidth for high data rate communication. However, mm wave frequency bands can have greater path loss compared to the lower frequency bands used by conventional wireless communication systems.
[0005] [0005] To overcome higher path loss, BSs and UEs can use beamforming to form directional links for communication. The practical application of beamforming in mmWave systems needs to overcome several constraints from regulatory perspectives. For example, the Federal Communications Commission (FCC)(FCC) and the
[0006] [0006] In certain mmWave systems, a UE can determine and conform to MPE restrictions autonomously or locally at the UE. For example, the UE can detect a distance from an antenna or an array of UE antennas to a part of the user's body (e.g. a hand, face, ankle, etc.), determine an MPE constraint with based on detected distance, and transmit using an MPE compliant UL power based on detected distance. However, autonomous or local detections and UL power adjustments on the UE may not provide optimal performance. BRIEF SUMMARY OF SOME EXAMPLES
[0007] [0007] The following description summarizes some aspects of the present disclosure to provide a basic understanding of the technology discussed. This summary is not a comprehensive overview of all contemplated features of the disclosure and is not intended to identify essential or fundamental elements of all aspects of the disclosure or to outline the scope of any or all aspects of the disclosure. Its sole purpose is to present some concepts of one or more aspects of revelation in summary form as a prelude to the more detailed description that will be presented later.
[0008] [0008] For example, in one aspect of the disclosure, a method of wireless communication includes transmitting, by a first wireless communication device to a second wireless communication device, a plurality of reports, each report indicating a level of transmit power allowed in the first wireless communication device that satisfies a maximum allowable exposure (MPE) parameter; receiving, by the first wireless communication device from the second wireless communication device, a first configuration based on an MPE profile associated with the first wireless communication device in response to the plurality of reports; and transmitting, by the first wireless communication device to the second wireless communication device, a first communication signal over a first beam based on the first configuration.
[0009] [0009] In a further aspect of the disclosure, a wireless communication method includes receiving, by a first wireless communication device from a second wireless communication device, a plurality of reports, each report indicating a power level transmission rate allowed on the second wireless communication device that satisfies a maximum allowable exposure (MPE) parameter; transmitting, by the first wireless communication device to the second wireless communication device, a first configuration based on an MPE profile associated with the second wireless communication device in response to the plurality of reports; and receiving, by the first wireless communication device from the second wireless communication device, a first communication signal over a first beam based on the first configuration.
[0010] [0010] In a further aspect of the disclosure, an apparatus includes a transceiver configured to transmit, to a second wireless communication device, a plurality of reports, each report indicating an allowable transmit power level in the apparatus that satisfies a maximum allowable exposure parameter (MPE); receiving, from the second wireless communication device, a first configuration based on an MPE profile associated with the apparatus in response to the plurality of reports; and transmitting, to the second wireless communication device, a first communication signal over a first beam based on the first configuration.
[0011] [0011] In a further aspect of the disclosure, an apparatus includes a transceiver configured to receive from a second wireless communication device a plurality of reports, each report indicating an allowable transmit power level on the second wireless communication device. wire that satisfies a maximum allowable exposure (MPE) parameter; transmitting to the second wireless communication device a first configuration based on an MPE profile associated with the second wireless communication device in response to the plurality of reports; and receiving, from the second communication device, a first communication signal over a first beam based on the first configuration.
[0012] [0012] In a further aspect of the disclosure, a computer readable medium having program code recorded thereon, the program code includes code for causing a first wireless communication device to transmit to a second wireless communication device wire, a plurality of reports, each report indicating an allowable transmit power level in the first wireless communication device that satisfies a maximum allowable exposure (MPE) parameter; code for causing the first wireless communication device to receive from the second wireless communication device a first configuration based on an MPE profile associated with the first wireless communication device in response to the plurality of reports; and code for causing the first wireless communication device to transmit to the second wireless communication device a first communication signal over a first beam based on the first configuration.
[0013] [0013] In a further aspect of the disclosure, a computer readable medium having program code recorded thereon, the program code includes code for causing a first wireless communication device to receive from a second wireless communication device. wire, a plurality of reports, each report indicating an allowable transmit power level in the second wireless communication device that satisfies a maximum allowable exposure (MPE) parameter; code for causing the first wireless communication device to transmit to the second wireless communication device a first configuration based on an MPE profile associated with the second wireless communication device in response to the plurality of reports; and code for causing the first wireless communication device to receive from the second wireless communication device a first communication signal over a first beam based on the first configuration.
[0014] [0014] In a further aspect of the disclosure, an apparatus includes means for transmitting, to a second wireless communication device, a plurality of reports, each report indicating an allowable transmit power level in the apparatus that satisfies a parameter of maximum allowable exposure (MPE); means for receiving, from the second wireless communication device, a first configuration based on an MPE profile associated with the apparatus in response to the plurality of reports; and means for transmitting to the second wireless communication device a first communication signal over a first beam based on the first configuration.
[0015] [0015] In a further aspect of the disclosure, an apparatus includes means for receiving, from a second wireless communication device, a plurality of reports, each report indicating an allowable transmit power level in the second wireless communication device. that satisfies a maximum allowable exposure (MPE) parameter; means for transmitting to the second wireless communication device a first configuration based on an MPE profile associated with the second wireless communication device in response to the plurality of reports; and means for receiving, from the second communication device, a first communication signal over a first beam based on the first configuration.
[0016] [0016] Other aspects, features, and embodiments of the present invention will become apparent to those skilled in the art upon review of the following description of exemplary embodiments of the present invention in conjunction with the accompanying drawings. While features of the present invention may be discussed with respect to certain embodiments and figures below, all embodiments of the present invention may include one or more of the advantageous features discussed herein. In other words, while one or more embodiments may be discussed as having certain advantageous features, one or more of those features may also be used in accordance with the various embodiments of the invention discussed herein. Similarly, while exemplary embodiments may be discussed below as embodiments of the device, system, or method, it should be understood that such exemplary embodiments may be implemented in various devices, systems, and methods. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] [0017] Figure 1 illustrates a wireless communication network in accordance with some embodiments of the present disclosure.
[0018] [0018] Figure 2 is a block diagram of an exemplary user equipment (UE) in accordance with the embodiments of the present disclosure.
[0019] [0019] Figure 3 is a block diagram of an exemplary base station (BS) in accordance with embodiments of the present disclosure.
[0020] [0020] Figure 4 is a signaling diagram of a communication method for maximum allowable exposure (MPE) compliance in accordance with some embodiments of the present disclosure.
[0021] [0021] Figure 5 is a signaling diagram of a communication method for MPE compliance in accordance with some embodiments of the present disclosure.
[0022] [0022] Figure 6 is a signaling diagram of a communication method for MPE compliance in accordance with some embodiments of the present disclosure.
[0023] [0023] Figure 7 is a schematic diagram illustrating an uplink (UL) configuration method for MPE compliance in accordance with some embodiments of the present disclosure.
[0024] [0024] Figure 8 is a flow diagram of a communication method for MPE compliance in accordance with the embodiments of the present disclosure.
[0025] [0025] Figure 9 is a flow diagram of a communication method for MPE compliance in accordance with the embodiments of the present disclosure. DETAILED DESCRIPTION
[0026] [0026] The detailed description presented below, in conjunction with the attached drawings, is intended as a description of various configurations and is not intended to represent only the configurations in which the concepts described herein may be practised. The detailed description includes specific details for the purpose of providing a complete understanding of the various concepts. However, it will be apparent to those skilled in the art that these concepts can be practiced without these specific details. In some cases, well-known structures and components are shown in block diagram form in order to avoid obscuring such concepts.
[0027] [0027] This disclosure generally refers to the provision or participation in authorized shared access between two or more wireless communication systems, also called wireless communication networks. In various embodiments, the techniques and apparatus can be used for wireless communication networks such as code division multiple access (CDMA) networks, time division multiple access (TDMA) networks, frequency division multiple access networks. (FDMA), orthogonal FDMA networks (OFDMA), single-carrier FDMA networks (SC-FDMA), LTE networks, GSM networks, 5th Generation (5G) or new radio (NR) networks, as well as other communication networks. As described herein, the terms "networks" and "systems" may be used interchangeably.
[0028] [0028] An OFDMA network can implement a radio technology such as Evolved UTRA (E-UTRA), IEEE
[0029] [0029] In particular, 5G networks contemplate diverse deployments, diverse spectrum and diverse services and devices that can be implemented using a unified air interface based on OFDM. To achieve these goals, additional enhancements to LTE and LTE-A are considered in addition to the development of new radio technology for NR 5G networks. NR 5G will be capable of scaling to provide coverage (1) to a massive Internet of Things (IoTs) with an ultra-high density (e.g. -1M nodes/km2), ultra-low complexity (e.g. ~10L bits /sec) ultra-low power (eg ~l0+ years of battery life), and deep coverage with the ability to reach challenging locations; (2) including mission-critical control with strong security to protect sensitive personal, financial or classified information, ultra-high reliability (e.g. -99.9999% reliability), ultra-low latency (e.g. -1 ms), and users with wide ranges of mobility or lack thereof; and (3) with advanced mobile broadband including extremely high capacity (e.g. -10 Tbps/km2), extreme data rates (e.g. multi-Gbps rate, experienced rates per user of 100+ Mbps), and awareness deep with advanced discoveries and optimizations.
[0030] [0030] 5G NR can be implemented to use optimized OFDM based waveforms with scalable numerology and transmission time interval (TTI); with a common, flexible structure to efficiently multiplex services and resources with a low-latency dynamic time division duplex (TDD)/frequency division duplex (FDD) design; and with advanced wireless technologies such as massive multi-input, multi-output (MIMO), robust millimeter wave (mmWave) transmissions, advanced channel encoding, and device-centric mobility. The scalability of numerology in
[0031] [0031] The scalable numerology of NR 5G facilitates scalable TTI for diverse latency and quality of service (QoS) requirements. For example, shorter TTI can be used for low latency and high reliability, while longer TTI can be used for greater spectral efficiency. Efficient multiplexing of long and short TTIs to allow transmissions to start at symbol boundaries. NR 5G also features a standalone integrated subframe design with uplink/downlink scheduling information, data and acknowledgment in the same subframe. Independent integrated subframe supports unlicensed or contention-based shared spectrum communication, adaptive uplink/downlink that can be flexibly configured on a per-cell basis to dynamically switch between uplink and downlink to meet today's traffic needs .
[0032] [0032] Various other aspects and features of the disclosure are further described below. It should be understood that the teachings presented herein may be incorporated in a wide variety of ways and that any specific structure, function, or both that are disclosed herein is merely representative and not limiting. Based on the teachings presented herein, one skilled in the art would appreciate that an aspect disclosed herein can be implemented independently of any other aspects and that two or more of these aspects can be combined in various ways. For example, an apparatus may be implemented or a method may be practiced using various aspects presented herein. Furthermore, such apparatus may be implemented or such method may be practiced using another structure, functionality or structure and functionality in addition to or instead of one or more of the aspects presented herein. For example, a method may be implemented as part of a system, device, apparatus, and/or as instructions stored on a computer-readable medium for execution on a processor or computer. Furthermore, an aspect may comprise at least one element of a claim.
[0033] [0033] This application describes mechanisms to mitigate MPE restrictions based on UE feedback. For example, a UE can determine maximum allowable UL transmit power levels that satisfy MPE restrictions at various time points and report the maximum allowable UL transmit powers to a BS. The BS can track and determine a specific MPE profile for the UE based on the maximum allowable UL transmit powers collected from the UE. The MPE profile provides a long-term display or statistics of the UE's UL transmit powers. The BS can determine a UL transmission configuration for the UE based on the long-term statistics accumulated in this way. The UL transmit configuration may include at least one of a beam index, a UL transmit power parameter, or a resource allocation assigned to the UE. Upon receiving the UL transmit configuration, the UE can generate a directional beam based on the beam index and transmit a UL communication signal using the directional beam. The UE can configure the transmit power based on the UL transmit power parameter. The UE may transmit the UL communication signal using resources indicated in the allocation.
[0034] [0034] In some embodiments, the UE can monitor an instantaneous MPE violation. Upon detection of an instant MPE violation, the UE can report the instant MPE violation to the BS. In response, BS may result in an instantaneous time and/or space average of MPE violations to satisfy MPE constraints over a period of time and,
[0035] [0035] In some embodiments, the UE may report the maximum UL transmit powers allowed for multiple BSs (eg, one serving BS and one or more neighboring BSs). BSs can coordinate to determine a device-specific MPE profile for the UE based on the maximum allowable UL transmit power reports and/or a network-level device-specific MPE profile based on the UL maximum transmit power reports. maximum allowable UL transmission collected from multiple UEs. BSs can coordinate to determine UL broadcast settings for the UE based on the device-specific MPE profile and/or the device-specific MPE profile at the network level.
[0036] [0036] Aspects of this application may provide several benefits. For example, the UE's feedback of the maximum allowable UL transmit powers may allow the BS, which may have more computational and storage capabilities than the UE, to track the UE's UL transmit power histories. The BS may determine the UE's UL transmission settings based on statistical information (e.g. MPE profile) over a period of time rather than based on a specific instantaneous power report (e.g. a PHR) and thus can avoid selecting a beam index, UL transmit power parameter, and/or resource allocation that are overly conservative. The reporting of instantaneous MPE violations by the UE may allow the BS to establish an average of instantaneous MPE violations over a period of time rather than determining a UL transmission setting that is overly conservative. As a result, the revealed modalities can mitigate MPE restrictions and improve UL transmission performance.
[0037] [0037] Figure 1 illustrates a wireless communication network 100 in accordance with some embodiments of the present disclosure. Network 100 may be a 5G network. The network 100 includes various base stations (BSs) 105 and other network entities. A BS 105 can be a station that communicates with UEs 115 and can also be called an evolved node B (eNB), a next generation NB (gNB), an access point, and the like. Each BS 105 can provide communication coverage for a specific geographic area. In 3GPP, the term “cell” can refer to that specific geographic coverage area of a BS 105 and/or a BS subsystem serving the coverage area, depending on the context in which the term is used.
[0038] [0038] A BS 105 can provide communication coverage to a large cell or a small cell, such as a picocell or a femtocell and/or other cell types. A macro cell typically covers a relatively large geographic area (eg, several kilometers in radius) and may allow unrestricted access by UEs with service subscriptions with the network provider. A small cell, such as a pico cell, typically covers a smaller geographic area and may allow unrestricted access by UEs with service subscriptions with the network provider. A small cell, such as a femto cell, could also cover a relatively small geographic area (e.g., a household) and, in addition to unrestricted access, could also provide restricted access by UEs having an association with the femto cell (e.g., UEs in a closed subscriber group (CSG), UEs for home users, and the like). A BS for a cell macro can be called a BS macro. A BS for a small cell may be called a small cell BS, a pico BS, a femto BS, or a home BS. In the example shown in Figure 1, BSs 105d and l05e can be regular macro BSs, while BSs 105a-105c can be macro Bss enabled with a 3-dimensional (3D), full-dimensional (FD), or massive MIMO. BSs l05a-l05c can benefit from their larger MIMO capabilities to exploit 3D beamforming in elevation and azimuth beamforming to increase coverage and capacity. The BS l05f can be a small cell BS that can be a home node or portable hotspot. A BS 105 can support one or multiple cells (eg, two, three, four, and the like).
[0039] [0039] Network 100 can support synchronous or asynchronous operation. For synchronous operation, BSs can have similar frame timing and transmissions from different BSs can be approximately time aligned. For asynchronous operation, BSs may have different frame timing and transmissions from different BSs may not be time aligned.
[0040] [0040] The UEs 115 are dispersed throughout the wireless network 100, and each UE 115 can be stationary or mobile. A UE 115 can also be called a terminal,
[0041] [0041] In operation, BSs l05a-l05c can service UEs 115a and 115b using 3D beamforming and spatial coordinate techniques such as coordinated multipoint (CoMP) or multiconnectivity. Macro BS l05d can perform backhaul communication with BSs 105a-l05c as well as small cell, BS l05f. BS macro l05d can also transmit multicast services that are subscribed to and received by UEs 1l5c and 1l5d. Such multicast services may include mobile television or broadcast video, or may include other services to provide community information, such as emergencies or weather alerts, such as Amber or Gray alerts.
[0042] [0042] Network 100 can also support mission-critical communication with ultra-reliable, redundant links to mission-critical devices such as the UE 115e, which can be a drone. Redundant communication links with UE 115e may include links from macro BSs l05d and l05e, as well as links from small cell BS l05f. Other machine-type devices such as the UE 115f (e.g. a thermometer), the UE 115g (e.g. smart meter), and the UE 115h (e.g. wearable device) can communicate over the network 100 directly with the BSs, such as the small cell BS l05f and the macro BS l05e, or in multi-hop configurations by communicating with another user device that relays its information to the network, such as the UE 115f that communicates temperature measurement information to the smart meter, the UE 115g which are then reported to the network via the small cell BS 105f. Network 100 can also provide additional network efficiency through dynamic, low-latency TDD/FDD communication, such as in a vehicle-to-vehicle (V2V).
[0043] [0043] In some implementations, the network 100 uses OFDM-based waveforms for communication.
[0044] [0044] In one embodiment, BSs 105 may assign or schedule transmission resources (e.g., in the form of time-frequency resource blocks (RB)) for DL and UL transmissions on network 100. DL refers to to the transmission direction from a BS 105 to a UE 115, while the UL refers to the transmission direction from a UE 115 to a BS 105. The communication may be in the form of radio frames. A radio frame can be divided into a plurality of subframes, eg about 10. Each subframe can be divided into slots, eg about 2. Each slot can be further divided into mini-slots. In a frequency division duplex (FDD) mode, simultaneous UL and DL transmissions can occur in different frequency bands. For example, each subframe includes a UL subframe in a UL frequency band and a DL subframe in a DL frequency band. In a time division duplex (TDD) mode, UL and DL transmissions occur at different time periods using the same frequency band. For example, a subset of the subframes (e.g. DL subframes) in a radio frame can be used for DL transmissions, and another subset of the subframes (e.g. UL subframes) in the radio frame can be used for DL transmissions. UL.
[0045] [0045] DL subframes and UL subframes can be further divided into multiple regions. For example, each DL or UL subframe can have predefined regions for transmissions of reference signals, control information, and data. Reference signals are predetermined signals that facilitate communication between the BSs 105 and the UEs 115. For example, a reference signal may have a specific pilot pattern or structure, where the pilot tones may span a bandwidth or bandwidth. operating frequency, each positioned at a predefined time and a predefined frequency. For example, a BS 105 may transmit cell-specific reference signals (CRSs) and/or channel status information - reference signals (CSI-RSs) to allow a UE 115 to estimate a DL channel. Similarly, a UE 115 may transmit polling reference signals (SRSs) to allow a BS 105 to estimate a UL channel. Control information can include resource assignments and protocol controls. Data may include protocol data and/or operational data. In some embodiments, BSs 105 and UEs 115 may communicate using independent subframes. An independent subframe may include a portion for DL communication and a portion for UL communication. An independent subframe can be DL-centered or UL-centered. A DL-centric subframe can include a longer duration for DL communication than for UL communication. A UL-centric subframe can include a longer duration for UL communication than for UL communication.
[0046] [0046] In one embodiment, network 100 may be an NR network deployed on licensed spectrum. BSs 105 may transmit sync signals (e.g., including a primary sync signal (PSS) and a secondary sync signal (SSS)) on the network 100 to facilitate synchronization. The BSs 105 may broadcast system information associated with the network 100 (e.g., including a master information block (MIB), minimum remaining system information (RMSI), and other information (OSI)) to facilitate access to the initial network. In some cases, the BSs 105 may broadcast the PSS, SSS, MIB, RMSI and/or OSI in the form of sync signal blocks (SSBs).
[0047] [0047] In one embodiment, a UE 115 that is trying to access the network 100 may perform an initial cell lookup by detecting a PSS from a BS 105. The PSS may allow time period synchronization and may indicate a value of physical layer identity. The UE 115 can then receive an SSS. SSS can enable radio frame synchronization, and can provide a cell identity value, which can be combined with the physical layer identity value to identify the cell. SSS can also enable detection of a duplexing mode and a cyclic prefix length. Some systems, such as TDD systems, can transmit an SSS but not a PSS. Both PSS and SSS can be located in a central portion of a carrier, respectively.
[0048] [0048] Upon receipt of the PSS and SSS, the UE 115 may receive a MIB, which may be transmitted on the physical broadcast channel (PBCH). The MIB may include system information for initial network access and programming information for RMSI and/or OSI. After decoding the MIB, the UE 115 can receive RMSI and/or OSI. RMSI and/or OSI may include radio resource configuration (RRC) configuration information related to random access channel (RACH) procedures, paging, uplink physical control channel (PUCCH), link shared physical channel upstream (PUSCH), power control, SRS and cellular bus. After obtaining the MIB and/or SIBs, the UE 115 can perform random access procedures to establish a connection with the BS 105.
[0049] [0049] After establishing a connection, the UE 115 and BS 105 can enter a normal operating stage or steady state, where operational data can be exchanged. For example, the BS 105 may schedule UL and/or DL transmissions by issuing UL transmission grants and/or DL transmission grants to the UE 115. Subsequently, the BS 105 and UE 115 may communicate based on the grants. issued.
[0050] [0050] In one embodiment, the network 100 can support UL power control. For example, during steady state, the UE 115 may transmit dynamic power reserve reports (PHRs) to the BS 105. Each PHR may indicate a dynamic reserve amount between a current transmit power used by the UE 115 for a PUSCH transmission and a maximum transmit power available at the UE 115. A positive value PHR may indicate that the UE 115 can transmit more data using a higher power than the current transmit power, while a negative value PHR may indicate that the UE 115 is already transmitting beyond the allowable limit (for example, the maximum transmit power). The BS 105 can allocate UL resources to the UE 115 based on the PHRs. For example, the larger the PHR, the more UL resources (eg, RBs) can be allocated to the UE 115. While PHRs can facilitate UL power control and allow BSs 105 to allocate UL resources according to the dynamic power reserve of the UE 115, the PHRs can only provide a snapshot of the current PUSCH transmission of the UE 115. Therefore, PHR-based power control can lead to a more conservative UL transmission configuration, and thus, may be suboptimal.
[0051] [0051] In one embodiment, the network 100 may operate in a mm wave frequency band. BSs 105 and UEs 115 may include antenna arrays and may use analog beamforming and/or digital beamforming to form directional beams for communication. To comply with MPE limits required by regulators such as the FCC and ICNIRP, a UE 115 may determine maximum allowable UL transmit powers based on detections of distances between the UE 115's antennas and a body part (e.g., one hand) of a UE 115 user at various time points. The UE 115 may report or feedback the maximum allowable UL transmit powers determined to a serving BS 105. The BS 105 may determine an MPE profile (e.g., a history or long-term information statistics) for the UE 115 based on the feedbacks and determine the UL transmission settings for the UE 115 based on the MPE profile. In some embodiments, the UE 115 may provide the feedbacks to multiple BSs 105 (e.g., a server BS 105 and one or more neighboring BSs 105) that are in coordination. Coordination BSs 105 can jointly determine UL transmission settings for UEs 115 to satisfy MPE constraints. Mechanisms for satisfying MPE constraints based on feedbacks from UEs 115 and network assists from BSs 105 are described in more detail in this document.
[0052] [0052] Figure 2 is an exemplary UE diagram 200 in accordance with the embodiments of the present disclosure. The UE 200 may be a UE 115 as discussed above. As shown, the UE 200 may include a processor 202, a memory 204, an MPE compliance module 208, a transceiver 210 including a modem subsystem 212 and radio frequency (RF) unit 214, and one or more antennas 216. they may be in direct or indirect communication with each other, for example through one or more buses.
[0053] [0053] Processor 202 may include a central processing unit (CPU), a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a controller, a field programmable gate array (FPGA) device. ), another hardware device, a firmware device, or any combination thereof configured to perform the operations described in this document. Processor 202 may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors together with a DSP core, or any other such configuration.
[0054] [0054] The memory 204 may include a cache memory (e.g., a processor cache memory 202), random access memory (RAM), magnetoresistive RAM (MRAM), read-only memory (ROM), programmable read-only memory (PROM). ) erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), flash memory, solid-state memory device, hard disk drives, other forms of volatile and non-volatile memory, or a combination of different types of memory. In one embodiment, memory 204 includes non-temporary computer readable medium. Memory 204 may store instructions 206. Instructions 206 may include instructions that, when executed by processor 202, cause processor 202 to perform operations described herein with reference to UEs 115 in conjunction with embodiments of the present disclosure, for example for example, aspects of Figures 4 to 9. Instructions 206 can also be called code. The terms “instructions” and “code” should be interpreted broadly to include any type of computer-readable instruction(s). For example, the terms “instructions” and “code” can refer to one or more programs, routines, subroutines, functions, procedures, etc. “Instructions” and “code” may include a single computer-readable instruction or many computer-readable instructions.
[0055] [0055] The MPE 208 compliance module can be implemented through hardware, software, or combinations thereof. For example, MPE compliance module 208 may be implemented as a processor, circuit, and/or instructions 206 stored in memory 204 and executed by processor 202. MPE compliance module 208 may be used for various aspects of the present disclosure e.g. aspects of Figures 4 to 9. For example, the MPE compliance module 208 is configured to detect distances between antennas 216 and body parts of a user of UE 200 at various time points, determine transmit powers maximum allowable UL values that satisfy MPE restrictions for detected distances, report the maximum allowable UL transmit powers to one or more BSs (e.g., BSs 105), receive the UL transmit settings from the BSs, transmit the UL communication signals based on received UL transmission settings, and/or reporting instantaneous violations, as described in more detail in this document.
[0056] [0056] As shown, transceiver 210 may include modem subsystem 212 and RF unit
[0057] [0057] The RF unit 214 can deliver the modulated and/or processed data, e.g. data packets (or, more generally, data messages which may contain one or more data packets and other information), to the antennas. 216 for transmission to one or more other devices. This may include, for example, transmitting reports of maximum allowable UL transmit power to one or more BSs in accordance with the embodiments of the present disclosure. Antennas 216 may additionally receive data messages transmitted from other devices. This may include, for example, receiving UL transmission configurations from one or more BSs in accordance with the embodiments of the present disclosure. Antennas 216 may provide the received data messages for processing and/or demodulation at transceiver 210. Antennas 216 may include multiple antennas of similar or different designs to maintain multiple transmission links. The RF unit 214 can configure antennas 216.
[0058] [0058] Figure 3 is an exemplary BS diagram 300 in accordance with the embodiments of the present disclosure. The BS 300 may be a BS 105 as discussed above. As shown, the BS 300 may include a processor 302, a memory 304, an MPE compliance module 308, a transceiver 310 including a modem subsystem 312 and RF unit 314, and one or more antennas 316. These elements may be in direct or indirect communication with each other, for example through one or more buses.
[0059] [0059] Processor 302 can have various features as a type-specific processor. For example, these may include a CPU, a DSP, an ASIC, a controller, an FPGA device, another hardware device, a firmware device, or any combination thereof configured to perform the operations described herein. Processor 302 may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors together with a DSP core, or any other such configuration.
[0060] [0060] Memory 304 may include cache memory (e.g., processor cache memory 302), RAM, MRAM, ROM, PROM, EPROM, EEPROM, flash memory, a solid-state memory device, one or more drives disk drives, resistor-based arrays with memory (memristor), other forms of volatile and non-volatile memory, or a combination of different types of memory. In some embodiments, memory 304 may include non-temporary computer readable medium. Memory 304 may store instructions 306. Instructions 306 may include instructions that, when executed by processor 302, cause processor 302 to perform operations described herein, for example aspects of Figures 4 through 9. Instructions 306 may also be called code, which can be interpreted broadly to include any type of computer-readable instruction(s) as discussed above with respect to Figure 2.
[0061] [0061] The MPE 308 compliance module can be implemented through hardware, software, or combinations thereof. For example, the MPE compliance module 308 may be implemented as a processor, circuit, and/or instructions 306 stored in memory 304 and executed by the processor 302. The MPE compliance module 308 may be used for various aspects of the present disclosure , for example, aspects of Figures 4 to 9. For example, the MPE compliance module 308 is configured to receive reports of maximum allowed UL transmit powers that satisfy UE MPE restrictions from UEs (e.g., UEs 115 ), maintain and track statistical information (e.g. MPE profiles) associated with corresponding UE transmissions as described based on the reports, determine UL transmission settings for UEs based on statistical information, receive MPE violation report of the UEs, and/or adjust the UL transmission settings for the UEs based on the received Instantaneous MPE reports, as described in more detail. otherwise in this document.
[0062] [0062] As shown, transceiver 310 may include modem subsystem 312 and RF unit
[0063] [0063] The RF unit 314 can deliver the modulated and/or processed data, e.g. data packets (or, more generally, data messages which may contain one or more data packets and other information), to the antennas. 316 for transmission to one or more other devices. This may include, for example, transmitting UL transmission configurations to UEs in accordance with the embodiments of the present disclosure. Antennas 316 may additionally receive data messages transmitted from other devices and provide the received data messages for processing and/or demodulation at transceiver 310. This may include, for example, receiving reports of maximum allowable UL transmit power. of UEs in accordance with the modalities of the present disclosure. Antennas 316 may include multiple antennas of similar or different designs to maintain multiple transmission links.
[0064] [0064] Figure 4 is a signaling diagram of a communication method 400 for MPE compliance in accordance with some embodiments of the present disclosure. Method 400 is implemented by a BS (eg, BSs 105 and 300) and a UE (eg, UEs 115 and 200) in a network (eg, network 100). Method steps 400 may be performed by computing devices (e.g., a processor, processing circuit, and/or other suitable component) of the BS and UE. As illustrated, method 400 includes a number of enumerated steps, but embodiments of method 400 may include additional steps before, after, and between the enumerated steps. In some embodiments, one or more enumerated steps may be omitted or performed in a different order.
[0065] [0065] In step 410, the UE transmits a first report of maximum allowed UL transmit power, e.g. at a first time instant, denoted as t(1), within a training period
[0066] [0066] To determine the maximum allowable UL transmit power, the UE may transmit a detection signal through the UE's antennas (eg antennas 216). The UE may configure the transmission of the detection signal so that the transmission creates a negligible amount of UL interference in the network. The UE can transmit the detection signal using unused or available UL resources. After the detection signal is transmitted, the UE can detect a distance between the antennas and a body part (e.g., one of the hands) of a UE user based on the detection signal. For example, the UE may include a sensor or RF circuitry located near the antenna for detection. Detection can use near-field detection techniques or far-field detection techniques. The UE may determine an MPE restriction for the detected distance based on certain MPE rules imposed by regulators (e.g. FCC and/or ICNIRP). After determining the MPE constraint, the UE can determine the maximum allowed UL transmit power that the UE can transmit while satisfying the MPE constraint. For example, the UE may withdraw or reduce transmit power from UL until the MPE constraint is satisfied.
[0067] [0067] In some embodiments, the MPE rules may be in the form of a lookup table or a graph of allowable power densities as a function of distance between an antenna and a body part. For example, a UE can be enabled to transmit at about 12 decibel-milliwatts (dBm) at a distance of about 10 millimeters (mm) from a body part and at about 10 dBm at a distance of about 5 mm. of a part of the body.
[0068] [0068] The 402 training period can be predetermined, for example, according to a specific wireless communication standard or protocol. Alternatively, the 402 training period can be configured by the BS, either autonomously as a network protocol or based on feedback from one or more UEs. In particular, the training period 402 can be determined by the UE. The 402 training period can include any suitable length. The training period 402 can include a fixed duration or a variable duration. The training period 402 may include periodic symbol allocations or aperiodic symbol allocations for the UE to transmit the reports. In some embodiments, the training period 402 may include about 100 subframes (e.g., about 100 milliseconds (ms)). In some embodiments, the 402 training period may vary depending on the UE's location. For example, the training period 402 can be increased or reduced depending on whether the UE is situated on a cell edge or is proximal to the BS, respectively.
[0069] [0069] The UE may transmit one or more reports of maximum allowed UL transmit power during the training period 402. For example, in step 420, the UE transmits an N report of maximum allowed UL transmit power indicating a maximum UL transmit power allowed, for example, at the Nth time, denoted as t(N), within the training period 402. In some embodiments, the UE can be configured to transmit maximum UL power reports allowed at a given time (for example, at t(1), t(2), ..., and at t(3)). For example, the BS can transmit a report configuration indicating the training period 402 and reporting opportunities at time t(1) to t(N).
[0070] [0070] Maximum allowable UL transmit powers may vary due to changing position of UE antennas, UE antenna sub-arrays, and/or UE antenna modules relative to a UE user. For example, the user can keep the UE in a landscape orientation at one time and in a portrait orientation at another time. In some cases, the user may be in a calling mode with the UE close to the ear. In some cases, the user may place the UE in a location that is not in contact with the user, for example, on a stand or a stand while watching a movie. In some cases, the user's body tissue profile along the skin surface can lead to near-field variations that can substantially alter MPE compliance, and thus the maximum allowable UL transmit powers can be user-dependent. .
[0071] [0071] In step 430, the BS determines an MPE profile for the UE. For example, the BS may collect statistical information associated with the UE based on the maximum allowable UL transmit power reports received during the 402 training period and/or previous UL transmissions from the UE. The MPE profile may include temporal statistical information and/or spatial statistical information from the UE. For example, the BS can track the UE's transmission history. The history may include UL transmit powers and/or UL beam indices used by the UE for previous UL transmissions. In one embodiment, the beam index may be a reference to an entry in a beam codebook, wherein the entry may include information associated with beam direction and/or beam width. The mechanisms for building the MPE profile are described in more detail in this document.
[0072] [0072] In step 440, the BS determines a UL transmission configuration for the UE based on the MPE profile and/or a payload size requested by the UE (eg, via a schedule request). The UL transmit configuration can include at least one of a beam index, a UL transmit power parameter, or a resource allocation (eg, number of RBs). The mechanisms for determining the UL transmission configuration based on the MPE profile are described in more detail in this document.
[0073] [0073] In step 450, the BS transmits the UL transmit configuration to the UE, for example, during a steady state period 404. For example, the BS may transmit the UL transmit configuration in a control portion (e.g. a physical downlink control channel (PDCCH)) of a subframe, and resources may be allocated from a data portion (e.g., a PUSCH) of a subframe.
[0074] [0074] In step 460, the UE transmits a UL communication signal to the BS based on the UL transmission configuration received during the steady-state period 404, for example, during the PUSCH portion of the subframe indicated by the transmission configuration of UL. For example, the UE can perform beamforming to generate a directional beam based on the beam index, configure the transmit power according to the UL transmit power parameter, and transmit a data signal through the directional beam in the transmission power configured using the allocated resources.
[0075] [0075] Although Figure 4 illustrates non-overlapping training period 402 and steady-state period 404, in some embodiments, training period 402 and steady-state period 404 may overlap. For example, the UE might include two RE chains, one for training operations, such as operations in steps 410 to 420, and one for steady-state operations, such as operations in steps 450 to 420.
[0076] [0076] In some modalities, the BS can serve several UEs. The BS can repeat the same process for each UE to generate device-specific MPE profiles for the UEs. The BS can determine UL transmission settings for the UEs based on corresponding device-specific MPE profiles.
[0077] [0077] Figure 5 is a signaling diagram of a communication method 500 for MPE compliance in accordance with some embodiments of the present disclosure. Method 500 is implemented by a BS (eg, BSs 105 and 300) and a UE (eg, UEs 115 and 200) in a network (eg, network 100). Method steps 500 may be performed by computing devices (e.g., a processor, processing circuit, and/or other suitable component) of the BS and UE. As illustrated, method 500 includes a number of enumerated steps, but embodiments of method 500 may include additional steps before, after, and between the enumerated steps. In some embodiments, one or more enumerated steps may be omitted or performed in a different order.
[0078] [0078] In step 505, the BS determines a first UL transmission configuration for the UE, for example, during a 502 steady state period similar to the 404 steady state period. The BS and UE may have completed at least some training operations, for example, as described in the
[0079] [0079] In step 510, the BS transmits the first UL transmission configuration. Similar to method 400, the BS may transmit the UL transmission configuration in a PDCCH portion of a subframe and resources may be allocated from a PUSCH portion of a subframe.
[0080] [0080] In step 515, the UE transmits a first UL communication signal based on the first UL transmission configuration.
[0081] [0081] The BS may grant one or more UL transmission opportunities to the UE during the steady state period 502. For example, in step 520, the BS determines a Kth UL transmission configuration for the UE based on the profile of EU MEPs.
[0082] [0082] In step 525, the BS transmits the Kth UL transmission configuration.
[0083] [0083] In step 530, the UE transmits a Kth UL communication signal based on the Kth UL transmit configuration.
[0084] [0084] During the 502 steady state period, the UE can monitor instantaneous MPE violations and report such violations to the BS. As shown, in step 540, the UE detects an MPE violation at time t(K). For example, the UE may determine an MPE constraint or instantaneous MPE parameter at time t(K) and may detect a violation based on the transmission of the Kth UL communication signal that exceeds the instantaneous MPE parameter as shown. Alternatively, the UE may detect the violation based on the Kth UL transmit configuration assigned by the BS, for example, based on the assigned UL transmit power parameter or the assigned beam index in the Kth UL transmit configuration without transmitting the 10th UL communication signal.
[0085] [0085] In step 545, upon detection of the instantaneous MPE violation, the UE transmits an instantaneous MPE report to the BS notifying the BS of the violation.
[0086] [0086] In step 550, upon receipt of the instantaneous MPE violation report, the BS can update the K UL transmission configuration. For example, the BS can determine a (K+1)th transmission configuration for a subsequent UL transmission by updating or adjusting the beam index, the UL transmit power parameter, and/or the resource allocation in the Kth transmission configuration. UL transmission. The BS can determine the (K+1)th UL transmission configuration by temporally and/or spatially averaging the instantaneous MPE violations so that the UE can satisfy the MPE constraints over a given period of time and /or within a given space.
[0087] [0087] In step 555, the BS transmits the (K+1)th UL transmission configuration.
[0088] [0088] In step 560, the UE transmits a (K+1)th UL communication signal based on the (K+1)th UL transmission configuration.
[0089] [0089] In one embodiment, the BS may update the MPE profile based on UL settings and/or instant MPE violations. In doing so, the MPE profile can provide a long-term history of UL transmissions from the UE, as described in more detail in this document.
[0090] [0090] Figure 6 is a signaling diagram of a communication method 600 for MPE compliance in accordance with some embodiments of the present disclosure. Method 600 is implemented by a BS A (for example, BSs 105 and 300), a BS B (for example, BSs 105 and 300), and a UE (for example, UEs 115 and 200) in a network ( for example, network 100). Method 600 is substantially similar to Methods 400 and 500 described above with respect to Figures 4 and 5, respectively, but the MPE profile tracing and UL transmission configuration determination can be coordinated between multiple BSs (e.g., the BS A and BS B). The steps of method 600 can be performed by computing devices (e.g., a processor, processing circuit, and/or other suitable component) of the BS and the UE. As illustrated, method 600 includes several enumerated steps, but embodiments of method 600 may include additional steps before, after, and between the enumerated steps. In some embodiments, one or more enumerated steps may be omitted or performed in a different order.
[0091] [0091] In step 610, the UE may transmit one or more reports of maximum allowable UL power to BS A and BS B, for example, during a training period 602 similar to the training period 402. maximum allowable UL transmit powers indicate maximum allowable UL transmit powers that the UE can transmit while satisfying an MPE constraint at various time instants during the training period
[0092] [0092] In step 620, BS A and BS B coordinate (e.g. via backhaul communication) to determine an MPE profile for the UE. For example, BS A can be a serving BS for the UE and BS B can be a BS serving a neighboring cell.
[0093] [0093] In step 630, BS A and BS B coordinate (e.g., via backhaul communication) to determine a UL transmission configuration for the UE based on the UE's MPE profile. In some embodiments, the network may include multiple UEs. BS A and BS B can collect maximum allowable UL transmit powers from the UEs and coordinate to generate a network-level device-specific MPE profile or geographic MPE map, as described in more detail in this document. In such embodiments, BS A and BS B can coordinate to determine the UL transmission configuration for the UE based on the device-specific MPE profile at the network level.
[0094] [0094] In step 640, BS A transmits the UL transmission configuration to the UE during a steady-state period 604 similar to the steady-state periods 404 and 502. For example, BS A and BS B may determine that the BS A is more suitable or effective (e.g. better performance) in receiving a beam from the
[0095] [0095] Alternatively, BS A and BS B may determine that BS B is more suitable or effective in receiving a beam from the UE than BS B. As shown by the dashed arrows, BS B may transmit the configuration of transmission of UL to UE in step 660 and the UE may transmit a communication signal from UL to BS B in step 670. Thereby, BS A and/or BS B may include a beam transfer instruction or indication in the configuration UL transmission switch that switches UL receptions between BS A and BS B.
[0096] [0096] Figure 7 is a schematic diagram illustrating a UL 700 configuration method for MPE compliance in accordance with some embodiments of the present disclosure. Method 700 may be employed by a BS such as BSs 105 and 300. For example, the BS may include an MPE 720 profiling component and a UL 730 transmission configuration determination component. The BS may implement the method 700 at steps 430 and 440 of method 400 described above with respect to Figure 4, steps 505, 520 and 550 of method 500 described above with respect to Figure 5 and/or steps 620 and 630 of method 600 described above in relation to Figure 6.
[0097] [0097] As similarly described above, the BS may receive a plurality of reports 710 from a UE. Each 710 report can indicate a maximum allowable UL transmit power that satisfies an MPE constraint or an MPE parameter at a given point in time, for example, in accordance with certain MPE regulations
[0098] [0098] In addition, the BS may receive a plurality of UL 712 transmissions from a UE (e.g., UEs 115 and 200) at various time instants (e.g., t(i) ... t(K) ) during a steady-state period 704 (for example, steady-state periods 404, 502, and 604). UL 712 transmissions may be transmitted using multiple 714 beams with different beam widths and/or beam directions. The BS can determine a UL transmit power, a UL receive power, and/or a beam index for each of the UL 712 transmissions. The beam index can represent a beam width and/or a beam direction. of a beam 714 used for a corresponding UL transmission 712. UL transmissions 712 are shown as 7l2t(i) to 7l0t(K) corresponding to UL transmissions at time instants t(i) at(K), respectively.
[0099] [0099] The MPE 720 profiling component can receive power information and/or beam information associated with 710 reports and/or UL 712 transmissions. The MPE 720 profiling component can be configured to generate an MPE 722 profile of the UE's UL transmissions over time and space. The MPE 722 profile can be in the form of a three-dimensional (3D) view or graphic. The MPE 722 profile can track UL transmit powers and beam indices as a function of time. For example, the x-axis may represent time in some constant units, the y-axis may represent UL transmit powers in some constant units, and the z-axis may represent beam indices in some constant units. Thus, a 2D x-y slice of the MPE 722 profile can provide temporal statistical information to the UE and a 2D y-z slice of the MPE 722 profile can provide spatial statistical information to the UE.
[00100] [00100] The UL 730 transmit configuration determining component can receive the 722 MPE profile and determine a UL 740 transmit configuration for the UE. The UL 730 transmission configuration determination component can apply long-term average, medium-term average, or short-term average to statistical information (e.g., UL transmission powers collected over time) in the MPE profile 722 to get an MPE metric. The transmission configuration determination component of UL 730 can apply an averaging function, such as a weighted average, moving average, exponential average, or filter, to statistical information to obtain an MPE metric. The UL 730 transmit configuration determination component can determine a beam index parameter, a UL transmit power parameter, and/or resources (e.g., multiple RBs) based on the MPE metric and a payload size. useful requested by
[00101] [00101] In some embodiments, the UL 740 transmission configuration may indicate quantized parameters. For example, the UL 740 transmission configuration may indicate a narrow beamwidth, a medium beamwidth, or a wide beamwidth. In some embodiments, the UL 740 transmission configuration may indicate relative parameters. For example, the transmission configuration of UL 740 may indicate a wider beamwidth or a narrower beamwidth, e.g. where the step size for increasing or decreasing the beamwidth can be predetermined or pre-configured . Similarly, the UL 740 transmit configuration may indicate a higher UL transmit power or a lower UL transmit power, for example, the step size to increase or decrease the UL transmit power can be predetermined or preconfigured.
[00102] [00102] In one embodiment, the MPE profiling component 720 may be jointly operated by multiple BSs in coordination, for example, as shown in method 600 described above with respect to Figure
[00103] [00103] Figure 8 is a flow diagram of a communication method 800 for MPE compliance in accordance with the embodiments of the present disclosure. The steps of method 800 may be performed by a computing device (e.g., a processor, processing circuit, and/or other suitable component) of a wireless communication device or other suitable means for performing the steps. For example, a wireless communication device such as UE 115 or UE 200 may use one or more components such as processor 202, memory 204, MPE compliance module 208, transceiver 210, modem 212 , and to one or more antennas 216,
[00104] [00104] In step 810, method 800 includes transmitting, via a first wireless communication device to a second wireless communication device, a plurality of reports (e.g., reports 710), each report indicating a maximum transmit power level allowed on the first wireless communication device that satisfies an MPE parameter. The first wireless communication device can be a UE and the second wireless communication device can be a BS (e.g. BSs 105 and 300). The MPE parameter can be an MPE constraint determined by regulators, such as the FCC and/or ICNIRP, as a function of time and/or space in relation to a user's body.
[00105] [00105] In step 820, method 800 includes receiving, by the first wireless communicating device from the second wireless communicating device, a first configuration (e.g., configuration 740) based on an MPE profile (e.g., the MPE profile 722) associated with the first wireless communication device in response to the reports.
[00106] [00106] In step 830, method 800 includes transmitting, by the first wireless communication device to the second wireless communication device, a first communication signal using a first beam based on the first configuration.
[00107] [00107] In some embodiments, the first wireless communication device may determine the maximum allowable transmit power levels at various times during a training period (e.g., training periods 402, 602, and 702), in that each maximum allowable transmit power level satisfies an MPE parameter at a corresponding time instant. The MPE profile may include statistical information associated with at least the maximum transmit power levels allowed during the training period.
[00108] [00108] In some embodiments, the first wireless communication device may receive a reporting setting indicating the training period and/or reporting opportunities from the second wireless communication device.
[00109] [00109] In some embodiments, the first wireless communication device may transmit the first communication signal using the first beam based on at least one of a beam index, a transmit power parameter, or a resource allocation in the first settings.
[00110] [00110] In some embodiments, the first wireless communication device can determine whether the transmission of the first communication signal satisfies an instantaneous MPE parameter. When it is determined that the transmission of the first communication signal does not satisfy the instantaneous MPE parameter, the first wireless communication device may transmit an instantaneous MPE violation report to the second wireless communication device. The first wireless communication device may receive a second configuration in response to the instantaneous MPE violation report from the second wireless communication device. The second configuration may indicate at least one of a beam index, a transmit power parameter, or a resource allocation updated from the first configuration. Subsequently, the first wireless communication device may transmit a second communication signal based on the second configuration.
[00111] [00111] In some embodiments, the first wireless communication device may additionally transmit the plurality of reports to a third wireless communication device (eg, another BS). The first wireless communication device may transmit a second communication signal using a second beam different from the first beam to the third wireless communication device. For example, the first configuration may indicate an instruction to transfer the first wireless communication device from the second wireless communication device to the third wireless communication device.
[00112] [00112] Figure 9 is a flow diagram of a communication method 900 for MPE compliance in accordance with the embodiments of the present disclosure. The steps of method 900 may be performed by a computing device (e.g., a processor, processing circuit and/or other suitable component) of a wireless communication device or other suitable means for performing the steps. For example, a wireless communication device such as the BS 105 or BS 300 may use one or more components, such as the processor 302, memory 304, MPE compliance module 308, transceiver 310, modem 312 , and to one or more antennas 316, to perform the steps of method 900. Method 900 may employ similar mechanisms as in methods 400, 500, 600 and/or 700 described in connection with Figures 4, 5, 6 and/or 7 , respectively. As illustrated, method 900 includes several enumerated steps, but embodiments of method 900 may include additional steps before, after, and between enumerated steps. In some embodiments, one or more enumerated steps may be omitted or performed in a different order.
[00113] [00113] In step 910, method 900 includes receiving, by a first wireless communication device from a second wireless communication device, a plurality of reports (e.g., reports 710), each report indicating a level of maximum transmit power allowed on the first wireless communication device that satisfies an MPE parameter. The first wireless communication device can be a BS and the second wireless communication device can be a UE (e.g. UEs 115 and 200). The MPE parameter can be an MPE constraint determined by regulators, such as the FCC and/or ICNIRP, as a function of time and/or space in relation to a user's body.
[00114] [00114] In step 920, method 900 includes transmitting, by the first wireless communication device to the second wireless communication device, a first configuration (e.g., configuration 740) based on an MPE profile (e.g., the MPE profile 722) associated with the second wireless communication device in response to the plurality of reports.
[00115] [00115] In step 930, method 900 includes receiving, by the first wireless communication device from the second wireless communication device, a first communication signal of a first beam based on the first configuration.
[00116] [00116] In some embodiments, the first wireless communication device may determine the MPE profile associated with the second wireless communication device based on at least the plurality of reports and determine the first configuration including at least one of a beam index , a transmit power parameter, or a resource allocation based at least on the MPE profile.
[00117] [00117] In some embodiments, the first wireless communication device may receive the plurality of reports at various times during a training period (e.g., training periods 402, 602, and 702), where each level of maximum allowable transmit power satisfies an MPE parameter at a corresponding time instant. The first wireless communication device can determine the MPE profile including statistical information associated with the maximum transmit power levels allowed during the training period.
[00118] [00118] In some embodiments, the first wireless communication device may transmit a report setting indicating the training period to the second wireless communication device.
[00119] [00119] In some embodiments, the first wireless communication device may receive an instantaneous MPE violation report associated with the transmission of the first communication signal from the second wireless communication device. The first wireless communication device may determine a second configuration by adjusting at least one of a beam index, a transmit power parameter, or a resource allocation in the first configuration in response to the instantaneous MPE violation report. The first wireless communication device can transmit the second configuration to the second wireless communication device. The first wireless communication device may receive a second communication signal from the second wireless communication device based on the second configuration.
[00120] [00120] In some embodiments, the first wireless communication device may coordinate with a third wireless communication device (e.g., another BS) to determine the first configuration based on the MPE profile associated with the second wireless communication device. wire. For example, the first wireless communication device may coordinate with the third wireless communication device to determine a network-level MPE profile associated with a plurality of wireless communication devices in a network, where the plurality of wireless communication devices includes the second wireless communication device. The first wireless communication device can coordinate with the third wireless communication device to transfer the second wireless communication device from the third wireless communication device to the first wireless communication device based on the MPE profile at the level of network.
[00121] [00121] Information and signals can be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols and chips that may be mentioned throughout the description above may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
[00122] [00122] The various illustrative blocks and modules described in conjunction with the disclosure herein may be implemented or executed with a general purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, discrete gate logic or transistor , discrete hardware components, or any combination thereof designed to perform the functions described in this document. A general purpose processor can be a microprocessor, but alternatively, the processor can be any processor, controller, microcontroller, or conventional state machine. A processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors together with a DSP core, or any other such configuration).
[00123] [00123] The functions described in this document may be implemented in hardware, software executed by a processor, firmware or any combination thereof. If implemented in software executed by a processor, functions can be stored or transmitted as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope of the accompanying disclosure and claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Resources that implement functions can also be physically located in various positions, including being distributed so that portions of functions are implemented in different physical locations. Also, as used herein, including the claims, "or", as used in a list of items (for example, a list of items preceded by a phrase such as "at least one or one or more of") indicates a list inclusive so that, for example, a list of [at least one of A, B or C] means A or B or C or AB or AC or BC or ABC (that is, A and B and C).
[00124] [00124] As those skilled in the art will now appreciate and depending on the specific application at hand,
many modifications, substitutions and variations may be made in and to the materials, apparatus, configurations and methods of using the devices of the present disclosure without departing from the spirit and scope of the same.
In light of this, the scope of the present disclosure should not be limited to that of the specific embodiments illustrated and described herein, as they are only by way of a few examples thereof, but rather, should be fully compatible with that of the claims. attached below and their functional equivalents.

权利要求:
Claims (64)
[1]
1. Wireless communication method, comprising: transmitting, by means of a first wireless communication device to a second wireless communication device, a plurality of reports, each report indicating an allowable transmission power level in the first wireless communication device that satisfies a maximum allowable exposure (MPE) parameter; receiving, by the first wireless communication device from the second wireless communication device, a first configuration based on an MPE profile associated with the first wireless communication device in response to the plurality of reports; and transmitting, by the first wireless communication device to the second wireless communication device, a first communication signal over a first beam based on the first configuration.
[2]
A method according to claim 1, wherein transmitting the first communication signal includes transmitting the first communication signal through the first beam based on at least one of a beam index, a transmission power parameter, or a resource allocation in the first configuration.
[3]
A method as claimed in claim 1, further comprising: determining, by the first wireless communication device, the allowable transmission power levels over a training time period, wherein the MPE profile includes information statistics associated with at least the levels of transmit power allowed during the training time period.
[4]
A method according to claim 3, further comprising: receiving, by the first wireless communication device from the second wireless communication device, a report configuration indicating the training time period.
[5]
A method according to claim 1, further comprising determining, by the first wireless communication device, whether the transmission of the first communication signal satisfies an instantaneous MPE parameter; and transmitting, by the first wireless communication device to the second wireless communication device, an instantaneous MPE violation report when it is determined that the transmission of the first communication signal does not satisfy the instantaneous MPE parameter.
[6]
The method of claim 5, further comprising: receiving, by the first wireless communication device from the second wireless communication device, a second configuration in response to the instantaneous MPE violation report, the second configuration indicating at least one of an updated beam index, an updated transmit power parameter, or an updated resource allocation; and transmitting, by the first wireless communication device, a second communication signal based on the second configuration.
[7]
A method as claimed in claim 1, further comprising: transmitting, by the first wireless communication device to a third wireless communication device, the plurality of reports, wherein the second wireless communication device and the third wireless communication device are different.
[8]
The method of claim 7, further comprising: transmitting, by the first wireless communication device to the third wireless communication device, a second communication signal over a second beam different from the first beam, wherein the first configuration indicates an instruction to transfer from the second wireless communication device to the third wireless communication device.
[9]
9. A wireless communication method, comprising: receiving, by a first wireless communication device from a second wireless communication device, a plurality of reports, each report indicating a transmit power level allowed in the second device of wireless communication that satisfies a maximum allowable exposure (MPE) parameter; transmitting, by the first wireless communication device to the second wireless communication device, a first configuration based on an MPE profile associated with the second wireless communication device in response to the plurality of reports; and receiving, by the first wireless communicating device from the second wireless communicating device, a first communication signal over a first beam based on the first configuration.
[10]
A method according to claim 9, further comprising: determining, by the first wireless communication device, the MPE profile associated with the second wireless communication device based on at least the plurality of reports; and determining, by the first wireless communication device, the first configuration including at least one of a beam index, a transmission power parameter, or a resource allocation based on at least the MPE profile.
[11]
The method of claim 9, wherein receiving the plurality of reports includes receiving the plurality of reports during a training time period, and wherein the method further comprises: determining, by the first wireless communication device , the MPE profile including statistical information associated with the transmit power levels allowed during the training time period.
[12]
A method according to claim 11, further comprising: transmitting, by the first wireless communication device to the second wireless communication device, a report configuration indicating the training time period.
[13]
The method of claim 9, further comprising receiving, by the first wireless communication device from the second wireless communication device, an instantaneous MPE violation report associated with the transmission of the first communication signal.
[14]
The method of claim 13, further comprising: determining, by the first wireless communication device, a second configuration by adjusting at least one of a beam index, a transmit power parameter, or an allocation of feature on first configuration in response to instant MPE violation report; transmitting, by the first wireless communication device to the second wireless communication device, the second configuration; and receiving, by the first wireless communication device from the second wireless communication device, a second communication signal based on the second configuration.
[15]
A method according to claim 9, further comprising: coordinating, by the first wireless communication device with a third wireless communication device, to determine the first configuration based on the MPE profile associated with the second wireless communication device. wireless communication.
[16]
The method of claim 15, wherein the coordination includes:
coordinate, by the first wireless communication device with the third wireless communication device, to determine a network-level MPE profile associated with a plurality of wireless communication devices in a network, the plurality of wireless communication devices wire including the second wireless communication device; and coordinating by the first wireless communication device with the third wireless communication device to transfer the second wireless communication device from the first wireless communication device to the third wireless communication device based on the MPE profile at the network level.
[17]
17. Apparatus comprising: a transceiver configured to: transmit, to a second wireless communication device, a plurality of reports, each report indicating an allowable transmit power level in the apparatus that satisfies a maximum allowable exposure parameter ( MEP); receiving, from the second wireless communication device, a first configuration based on an MPE profile associated with the apparatus in response to the plurality of reports; and transmitting, to the second wireless communication device, a first communication signal over a first beam based on the first configuration.
[18]
An apparatus according to claim 17, wherein the transceiver is further configured to transmit the first communication signal by transmitting the first communication signal over the first beam based on at least one of a beam index, a parameter of transmit power, or a resource allocation in the first configuration.
[19]
An apparatus as claimed in claim 17, further comprising: a processor configured to determine allowable transmit power levels during a training period of time, wherein the MPE profile includes statistical information associated with at least the levels of transmit power allowed during the training time period.
[20]
An apparatus according to claim 19, wherein the transceiver is further configured to: receive from the second wireless communication device a report configuration indicating the training time period.
[21]
An apparatus according to claim 17, further comprising a processor configured to determine whether transmission of the first communication signal satisfies an instantaneous MPE parameter, wherein the transceiver is further configured to transmit to the second communication device without wire, an instantaneous MPE violation report when it is determined that the transmission of the first communication signal does not satisfy the instantaneous MPE parameter.
[22]
An apparatus as claimed in claim 21, wherein the transceiver is further configured to:
receiving, from the second wireless communication device, a second configuration in response to the instantaneous MPE violation report, the second configuration indicating at least one of an updated beam index, an updated transmit power parameter, or a resource allocation updated; and transmitting a second communication signal based on the second configuration.
[23]
An apparatus according to claim 17, wherein the transceiver is further configured to: transmit to a third wireless communication device the plurality of reports, and wherein the second wireless communication device and the third device of wireless communication are different..
[24]
Apparatus as claimed in claim 23, wherein the transceiver is further configured to: transmit to the third wireless communication device a second communication signal over a second beam different from the first beam, and wherein the first configuration indicates an instruction to transfer from the second wireless communication device to the third wireless communication device.
[25]
25. An apparatus comprising: a transceiver configured to: receive from a second wireless communication device, a plurality of reports, each report indicating an allowable transmit power level in the second wireless communication device that satisfies a parameter of maximum allowable exposure (MPE);
transmitting to the second wireless communication device a first configuration based on an MPE profile associated with the second wireless communication device in response to the plurality of reports; and receiving, from the second wireless communication device to the second wireless communication device, a first communication signal over a first beam based on the first configuration.
[26]
An apparatus according to claim 25, further comprising a processor configured to: determine the MPE profile associated with the second wireless communication device based on at least the plurality of reports; and determining the first configuration including at least one of a beam index, a transmit power parameter, or a resource allocation based on the MPE profile.
[27]
An apparatus as claimed in claim 25, wherein the transceiver is further configured to receive the plurality of reports by receiving the plurality of reports during a training time period, and wherein the apparatus further comprises: a processor is further configured to determine the MPE profile including statistical information associated with the transmit power levels allowed during the training time period.
[28]
An apparatus as claimed in claim 27, wherein the transceiver is further configured to:
transmit to the second wireless communication device a report setting that indicates the training time period.
[29]
An apparatus according to claim 25, wherein the transceiver is further configured to: receive from the second wireless communication device an instantaneous MPE violation report associated with the transmission of the first communication signal.
[30]
An apparatus according to claim 29, further comprising: a processor configured to determine a second configuration by adjusting at least one of a beam index, a transmit power parameter, or a resource allocation in the first configuration in instant response to MPE breach report; wherein the transceiver is further configured to: transmit the second configuration to the second wireless communication device; and receiving, from the second wireless communication device, a second communication signal based on the second configuration.
[31]
An apparatus according to claim 25, further comprising: a processor configured to coordinate with a third wireless communication device to determine the first configuration based on the MPE profile associated with the second wireless communication device .
[32]
32. Apparatus as claimed in claim 31,
wherein the processor is further configured to coordinate by: coordinating, with the third wireless communication device, to determine a network-level MPE profile associated with a plurality of wireless communication devices on a network, the plurality of wireless communication devices including the second wireless communication device; and coordinating with the third wireless communication device to transfer the second wireless communication device from the apparatus to the third wireless communication device based on the network-level MPE profile.
[33]
33. Computer readable medium having program code recorded thereon, the program code comprising: code for causing a first wireless communication device to transmit to a second wireless communication device a plurality of reports , each report indicating an allowable transmit power level in the first wireless communication device that satisfies a maximum allowable exposure (MPE) parameter; code for causing the first wireless communication device to receive from the second wireless communication device a first configuration based on an MPE profile associated with the first wireless communication device in response to the plurality of reports; and code for causing the first wireless communication device to transmit to the second wireless communication device a first communication signal over a first beam based on the first configuration.
[34]
The computer readable medium of claim 33, wherein the code for causing the first wireless communication device to transmit the first communication signal is further configured to transmit the first communication signal over the first beam with based on at least one of a beam index, a transmit power parameter, or a resource allocation in the first configuration.
[35]
A computer readable medium according to claim 33, further comprising: code for causing the first wireless communication device to determine the allowable transmit power power levels during a training period of time, wherein the MPE profile includes statistical information associated with at least the transmit power levels allowed during the training time period.
[36]
A computer readable medium according to claim 35, further comprising: code for causing the first wireless communication device to receive from the second wireless communication device a report setting indicating the time period of training.
[37]
A computer readable medium according to claim 33, further comprising: code for causing the first wireless communication device to determine whether the transmission of the first communication signal satisfies an instantaneous MPE parameter; and code for causing the first wireless communication device to transmit to the second wireless communication device an instantaneous MPE violation report when it is determined that the transmission of the first communication signal does not satisfy the instantaneous MPE parameter.
[38]
A computer readable medium according to claim 37, further comprising: code for causing the first wireless communication device to receive from the second wireless communication device a second configuration in response to the breach report. instantaneous MPE, the second configuration indicating at least one of an updated beam index, an updated transmit power parameter, or an updated resource allocation; and code for causing the first wireless communication device to transmit a second communication signal based on the second configuration.
[39]
A computer readable medium according to claim 33, further comprising: code for causing the first wireless communication device to transmit to a third wireless communication device the plurality of reports, wherein the second wireless communication device and the third wireless communication device are different.
[40]
A computer readable medium as claimed in claim 39, further comprising: code for causing the first wireless communication device to transmit to the third wireless communication device a second communication signal over a second beam different from the first beam, where the first configuration indicates an instruction to transfer from the second wireless communication device to the third wireless communication device.
[41]
41. Computer readable medium having program code recorded thereon, the program code comprising: code for causing a first wireless communication device to receive from a second wireless communication device a plurality of reports , each report indicating an allowable transmit power level on the second wireless communication device that satisfies a maximum allowable exposure (MPE) parameter; code for causing the first wireless communication device to transmit to the second wireless communication device a first configuration based on an MPE profile associated with the second wireless communication device in response to the plurality of reports; and code for causing the first wireless communication device to receive from the second wireless communication device a first communication signal over a first beam based on the first configuration.
[42]
A computer readable medium according to claim 41, further comprising: code for causing the first wireless communication device to determine the MPE profile associated with the second wireless communication device based on at least the plurality of reports; and code for causing the first wireless communication device to determine the first configuration including at least one of a beam index, a transmit power parameter, or a resource allocation based on the MPE profile.
[43]
The computer readable medium of claim 41, wherein the code for causing the first wireless communication device to receive the plurality of reports is further configured to receive the plurality of reports over a period of time. training, and wherein the computer-readable medium further comprises: code for causing the first wireless communication device to determine the MPE profile including statistical information associated with the training power levels allowed during the training time period.
[44]
A computer readable medium according to claim 43, further comprising: code for causing the first wireless communication device to transmit to the second wireless communication device a report setting indicating the time period of training.
[45]
A computer readable medium according to claim 41, further comprising:
code for causing the first wireless communication device to receive from the second wireless communication device an instantaneous MPE violation report associated with the transmission of the first communication signal.
[46]
A computer readable medium according to claim 45, further comprising: code for causing the first wireless communication device to determine a second configuration by adjusting at least one of a beam index, a power parameter of transmission, or a resource allocation in the first configuration in response to the instantaneous MPE violation report; code for causing the first wireless communication device to transmit the second configuration to the second wireless communication device; and code for causing the first wireless communication device to receive from the second wireless communication device a second communication signal based on the second configuration.
[47]
A computer readable medium according to claim 41, further comprising: code for causing the first wireless communication device to coordinate with a third wireless communication device to determine the first configuration based on the profile of MPE associated with the second wireless communication device.
[48]
The computer readable medium of claim 47, wherein the code for causing the first wireless communication device to coordinate to determine the first configuration is further configured to: coordinate with the third communication device wireless, for determining a network-level MPE profile associated with a plurality of wireless communication devices in a network, the plurality of wireless communication devices including the second wireless communication device; and coordinating with the third wireless communication device to transfer the second wireless communication device from the first wireless communication device to the third wireless communication device based on the network-level MPE profile.
[49]
49. Apparatus characterized in that it comprises: means for transmitting, to a second wireless communication device, a plurality of reports, each report indicating a permissible transmit power level in the apparatus that satisfies a maximum permissible exposure parameter (MEP); means for receiving, from the second wireless communication device, a first configuration based on an MPE profile associated with the apparatus in response to the plurality of reports; and means for transmitting to the second wireless communication device a first communication signal over a first beam based on the first configuration.
[50]
An apparatus as claimed in claim 49, wherein the means for transmitting the first communication signal is further configured to transmit the first communication signal over the first beam based on at least one of a beam index, a parameter of transmit power, or a resource allocation in the first configuration.
[51]
An apparatus as claimed in claim 49, further comprising: means for determining allowable transmit power levels during a training period of time, wherein the MPE profile includes statistical information associated with at least the transmission power levels. transmission allowed during the training time period.
[52]
An apparatus according to claim 51, further comprising: means for receiving from the second wireless communication device a report configuration indicating the training time period.
[53]
An apparatus according to claim 49, further comprising: means for determining whether transmission of the first communication signal satisfies an instantaneous MPE parameter; and means for transmitting to the second wireless communication device an instantaneous MPE violation report when it is determined that the transmission of the first communication signal does not satisfy the instantaneous MPE parameter.
[54]
54. Apparatus as claimed in claim 53,
further comprising: means for receiving, from the second wireless communication device, a second configuration in response to the instantaneous MPE violation report, the second configuration indicating at least one of an updated beam index, a transmit power parameter updated or an updated resource allocation; and means for transmitting a second communication signal based on the second configuration.
[55]
An apparatus as claimed in claim 49, further comprising: means for transmitting to a third wireless communication device the plurality of reports, wherein the second wireless communication device and the third wireless communication device are different.
[56]
An apparatus as claimed in claim 55, further comprising: means for transmitting to the third wireless communication device a second communication signal over a second beam different from the first beam, wherein the first configuration indicates an instruction for transferring from the second wireless communication device to the third wireless communication device.
[57]
57. Apparatus characterized in that it comprises: means for receiving from a second wireless communication device, a plurality of reports, each report indicating a level of transmission power allowed in the second wireless communication device that satisfies a parameter maximum allowable exposure (MPE); means for transmitting to the second wireless communication device a first configuration based on an MPE profile associated with the second wireless communication device in response to the plurality of reports; and means for receiving from the second wireless communication device a first communication signal over a first beam based on the first configuration.
[58]
An apparatus according to claim 57, further comprising: means for determining the MPE profile associated with the second wireless communication device based on at least the plurality of reports; and means for determining the first configuration including at least one of a beam index, a transmit power parameter, or a resource allocation based on the MPE profile.
[59]
An apparatus as claimed in claim 57, wherein the means for receiving the plurality of reports is further configured to receive the plurality of reports during a training period of time, and wherein the apparatus further comprises: means for determining the MPE profile including statistical information associated with the transmit power levels allowed during the training time period.
[60]
60. Apparatus according to claim 59,
which further comprises: means for transmitting to the second wireless communication device a report configuration indicating the training time period.
[61]
An apparatus according to claim 57, further comprising: means for receiving from the second wireless communication device an instantaneous MPE violation report associated with the transmission of the first communication signal.
[62]
An apparatus according to claim 61, further comprising: means for determining a second configuration by adjusting at least one of a beam index, a transmit power parameter, or a resource allocation in the first configuration in response to the instant MPE breach report; means for transmitting the second configuration to the second wireless communication device; and means for receiving, from the second wireless communication device, a second communication signal based on the second configuration.
[63]
An apparatus according to claim 57, further comprising: means for coordinating with a third wireless communication device to determine the first configuration based on the MPE profile associated with the second wireless communication device.
[64]
An apparatus according to claim 63, wherein the means for coordinating to determine the first configuration is further configured to: coordinate with the third wireless communication device to determine an associated network-level MPE profile to a plurality of wireless communication devices in a network, the plurality of wireless communication devices including the second wireless communication device; and coordinating with the third wireless communication device to transfer the second wireless communication device from the apparatus to the third wireless communication device based on the network-level MPE profile.

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WO2019160669A1|2019-08-22|

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AU2019220486A1|2020-08-06|

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