exposure detection in millimeter wave systems

专利摘要:
In order to maintain compliance with exposure limits, in-band measurements can be performed. A method, a computer-readable medium and a device can be provided for wireless communication on user equipment. The device receives an indication of a specific cell resource, for example, a specific cell resource available for measuring MEP. The device then performs a measurement based on the specific feature of the cell and determines the possibility of adjusting a transmission characteristic of the user equipment based on the possibility of the measurement satisfying a limit. In another aspect, a base station device can configure a cell-specific feature on which a user device can perform an MEP measurement and control the use of the cell-specific feature for MEP measurement.
公开号:BR112020012548A2
申请号:R112020012548-2
申请日:2018-12-19
公开日:2020-11-24
发明作者:Ashwin Sam­Path；Joseph Burke；Raghu Challa；Udara Fernando；Andrzej Partyka；Muhammad Nazmul Islam
申请人:Qualcomm Incorporated；
IPC主号:

专利说明:

[0001] [0001] This Patent Application claims the priority of US Application No. 15 / 852,743 entitled ”EXPOSURE DETECTION IN MILLIMETER WAVE SYSTEMS” filed on December 22, 2017, which is assigned to the assignee.
[0002] [0002] The present disclosure relates, in general, to communication systems, and more particularly, to the detection of exposure in wireless communication systems of millimeter wave (mmW). INTRODUCTION
[0003] [0003] Wireless communication systems are widely installed to provide various telecommunication services such as telephony, video, data, messages and broadcasts. Typical wireless communication systems can employ multiple access technologies with the ability to support communication with multiple users when sharing available system resources. Examples of such multiple access technologies include multiple access systems by division (CDMA), multiple access systems by time division (TDMA), multiple access systems by frequency division (FDMA), multiple access systems by division by orthogonal frequency (OFDMA), multiple access systems by single carrier frequency division (SC-FDMA), and multiple access systems by time division synchronous code division (TD-SCDMA).
[0004] [0004] These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that allows different wireless devices to communicate at a municipal, national, regional and even global level. An exemplary telecommunication standard is Rádio Novo (NR) 5G. 5G is part of a continuous mobile broadband evolution promulgated by the Third Generation Partnership Project (3GPP) to satisfy the new requirements associated with latency, reliability, security, scalability (for example, with the Internet of Things (IoT)), and other requirements. Some aspects of 5G may be based on the 4G Long Term Evolution (LTE) standard. There is a need for further improvements in 5G technology. These enhancements may also apply to other multi-access technologies and the telecommunication standards that employ these technologies.
[0005] [0005] Exposure limits are imposed to limit Radio Frequency (RF) radiation from wireless devices. For example, a specific absorption rate (SAR) limit is imposed for wireless devices that communicate on a sub-6 carrier, for example, that communicate in a spectrum band below 6 GHz. An Exposure limit Maximum Allowable (MPE) is imposed for wireless devices that communicate above 6 GHz. With the high loss of travel in mmW systems, a greater Isotropically Equivalent Radiated Power (EIRP) can be desired, which can be obtained through targeting beam. However, a mmW beam from a portable device can violate an MPE limit when directed at a person's body. SUMMARY
[0006] [0006] The following provides a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all aspects covered, and is intended neither to identify key or critical elements of all aspects nor to outline the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified way as a prelude to the more detailed description that is presented later.
[0007] [0007] As the free space and other losses for mmW systems are much greater than in systems that communicate on sub-6 carriers, a larger EIRP for transmissions is typically desired. A larger EIRP can be achieved by using antenna arrays to direct the beam in a desired direction. Although a user equipment design can operate practically at much lower EIRP limits, there may be an issue where a beam aimed at a person's skin by the handheld device could violate the MPE limits, even though they satisfy the EIRP limits.
[0008] [0008] Static power limits to ensure that the MPE limits are met at all times could require substantial withdrawal in power loading for a bad uplink range. Therefore, an UE can measure exposure and respond in a variety of ways to ensure compliance. For example, the UE can perform an in-band exposure measurement to detect the presence of a person, for example, a hand or other body part. However, in-band measurement can cause interference for data transmissions and control in the communication system. In addition, in-band measurements may be inaccurate due to other transmissions in the communication system. In order to make accurate exposure measurements without causing interference to other transmissions in the communication system, the UE can make a measurement based on a specific cell feature for MEP measurements. The UE can then determine whether to adjust a transmission characteristic based on the measurement.
[0009] [0009] In one aspect of the disclosure, a method, a computer-readable medium and a device are provided for wireless communication on a user device. The device receives an indication that comprises a cell-specific resource, for example, a cell-specific resource available for MEP measurement. The device then performs a measurement based on the specific feature of the cell and determines the possibility of adjusting a transmission characteristic of the user equipment based on the possibility that the measurement satisfies a limit.
[0010] [0010] In another aspect of the disclosure, a method, a computer-readable medium and a device are provided for wireless communication at a base station. The device configures a cell-specific feature on which a user device can perform an MEP measurement and controls the use of the cell-specific feature for the MEP measurement.
[0011] [0011] For the result of the previously mentioned and related purposes, the one or more aspects comprise the resources hereinafter fully described and particularly indicated in the claims. The following description and the accompanying drawings set out in detail certain resources illustrating one or more aspects. These resources are indicative, however, of some of the various ways in which the principles of the various aspects can be employed, and this description is intended to include all such aspects and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] [0012] Figure 1 is a diagram that illustrates an example of a wireless communications system and an access network.
[0013] [0013] Figures 2A, 2B, 2Ca and 2D are diagrams that illustrate examples of a DL sub-frame, DL channels in the DL sub-frame, a UL sub-frame, and UL channels in the UL sub-frame, respectively, for a structure 5G / NR frame rate.
[0014] [0014] Figure 3 is a diagram that illustrates an example of a base station and user equipment (UE) in an access network.
[0015] [0015] Figure 4 is a diagram illustrating a base station communicating with an UE.
[0016] [0016] Figure 5 is a diagram that illustrates RF exposure in different communication systems.
[0017] [0017] Figure 6 illustrates an example of exposure measurement.
[0018] [0018] Figure 7 illustrates an example of exposure measurement in band.
[0019] [0019] Figure 8 is a flow chart of a wireless communication method.
[0020] [0020] Figure 9 is a conceptual data flow diagram that illustrates the data flow between different media / components in an exemplary device.
[0021] [0021] Figure 10 is a diagram that illustrates an example of a hardware deployment for a device that employs a processing system.
[0022] [0022] Figure 11 is a flow chart of a wireless communication method.
[0023] [0023] Figure 12 is a conceptual data flow diagram that illustrates the data flow between different media / components in an exemplary device.
[0024] [0024] Figure 13 is a diagram that illustrates an example of a hardware deployment for a device that employs a processing system. DETAILED DESCRIPTION
[0025] [0025] The detailed description established in conjunction with the accompanying drawings is intended as a description of various configurations and is not intended to represent only the configurations in which the concepts described in this document can be practiced. The detailed description includes specific details for the purpose of providing a complete understanding of various concepts. However, it will be evident to those skilled in the art that these concepts can be practiced without these specific details. On some occasions, well-known structures and components are shown in the form of a block diagram in order to avoid obscuring such concepts.
[0026] [0026] Several aspects of telecommunication systems will now be presented with reference to various apparatus and methods. These devices and methods will be described in the following detailed description and illustrated in the accompanying drawings through various blocks, components, circuits, processes, algorithms, etc. (collectively referred to as “elements”). These elements can be implemented using electronic hardware, computer software or any combination of them. Whether these elements are implemented as hardware or software depends on the particular design and application restrictions imposed on the general system.
[0027] [0027] By way of example, an element, or any portion of an element, or any combination of elements can be implemented as a "processing system" that includes one or more processors. Examples of processors include microprocessors, microcontrollers, graphics processing units (GPUs), central processing units (CPUs), application processors, digital signal processors (DSPs), reduced instruction set computing (RISC) processors, systems in chip (SoC), baseband processors, field programmable port arrangements (FPGAs), programmable logic devices (PLDs), state machines, port logic, discrete hardware circuits and other suitable hardware configured to perform the various features described for all this revelation. One or more processors in the processing system can run the software. The software should be interpreted widely to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software components, applications, software applications, software packages, routines, subroutines, objects, executables, execution threads, procedures, functions, etc., if referred to software, firmware, middleware, microcode, hardware description language or otherwise.
[0028] [0028] Thus, in one or more exemplary modalities, the functions described can be implemented in hardware, software or any combination thereof. If implemented in software, the functions can be stored in one or more instructions or code or encoded as they are in a computer-readable medium. Computer-readable media includes computer storage media. The storage media can be any available media that can be accessed by a computer. By way of example, and without limitation, such computer-readable media may comprise a random access memory (RAM), a read-only memory (ROM), an electrically programmable and erasable ROM (EEPROM), another optical disk storage , magnetic disk storage or other magnetic storage devices, combinations of the aforementioned types of computer-readable media, or any other means that can be used to store computer-readable code in the form of instructions or data structures that can be accessed by a computer.
[0029] [0029] Figure 1 is a diagram illustrating an example of a wireless communications system and an access network 100. The wireless communications system (also referred to as a wide wireless network (WWAN)) includes base stations 102, UEs 104 and an Evolved Packet Core (EPC) 160. Base stations 102 can include macrocells (high power cell base station) and / or small cells (low power cell base station). The macrocells include base stations. Small cells include femtocells, picocells and microcells.
[0030] [0030] Base stations 102 (collectively referred to as the Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network interface (UMTS) (E-UTRAN)) with EPC 160 through backhaul links 132 (for example, SI interface). In addition to other functions, base stations 102 can perform one or more of the following functions: user data transfer, radio channel encryption and decryption, integrity protection, header compression, mobility control functions (for example , automatic switching, dual connectivity), inter-cell interference coordination, connection definition and release, load balancing, distribution for non-access layer (NAS) messages, NAS node selection, synchronization, radio access network sharing (RAN), multimedia broadcast multicast service (MBMS), subscriber trait and equipment, RAN information management (RIM), paging, positioning and delivery of warning messages. Base stations 102 can communicate directly or indirectly (for example, through EPC 160) with each other on backhaul links 134 (for example, interface X2). The backhaul links 134 can be wired or wireless.
[0031] [0031] Base stations 102 can communicate wirelessly with UEs 104. Each base station 102 can provide communication coverage for a respective geographic coverage area 110. There may be overlapping geographical coverage areas 110. For example, small cell 102 'may have a coverage area 110' that overlaps coverage area 110 of one or more macro base stations 102. A network that includes both small cell and macrocells may be known as a heterogeneous network. A heterogeneous network can also include Domestic Evolved B Nodes (eNBs) (HeNBs), which can provide service to a restricted group known as a closed subscriber group (CSG). Communication links 120 between base stations 102 and UEs 104 may include uplink (UL) transmissions (also referred to as reverse link) from a UE 104 to a base station 102 and / or downlink (DL) transmissions ) (also referred to as a direct link) from a base station 102 to a UE 104. Communication links 120 can use multiple input and multiple output antenna (MIMO) technology, including spatial multiplexing, beam formation and / or transmission diversity. The communication links can be through one or more carriers. Base stations 102 / UEs 104 can use spectrum up to Y MHz (for example, 5, 10, 15, 20, 100 MHz) of bandwidth per carrier allocated in a carrier aggregation of up to a total of Yx MHz (x component carriers) used for transmission in each direction. The carriers may or may not be adjacent to each other. The allocation of carriers can be asymmetric in relation to DL and UL (for example, more or less carriers can be allocated to DL than to UL). Component carriers may include a primary component carrier and one or more secondary component carriers. A primary component carrier can be referred to as a primary cell (PCell) and a secondary component carrier can be referred to as a secondary cell (SCell).
[0032] [0032] Certain UEs 104 can communicate with each other using the device-to-device (D2D) 192 communication link. The D2D 192 communication link can use the DL / UL WWAN spectrum. The D2D 192 communication link can use one or more side link channels, such as a physical side link broadcast channel (PSBCH), a physical side link discovery channel (PSDCH), a physical side link shared channel ( PSSCH) and a physical side link control channel (PSCCH). D2D communication can be through a variety of wireless D2D communication systems, such as FlashLinQ, WiMedia, Bluetooth, ZigBee, Wi-Fi based on IEEE standard 802.11, LTE or NR.
[0033] [0033] The wireless communication system may additionally include a Wi-Fi access point (AP) 150 in communication with Wi-Fi stations (STAs) 152 by means of communication links 154 in an unlicensed frequency spectrum 5 GHz. When communicating over an unlicensed frequency spectrum, STAs 152 / AP 150 can perform a free channel assessment (CCA) before communicating in order to determine if the channel is available.
[0034] [0034] The small cell 102 ’can operate on a licensed and / or an unlicensed frequency spectrum. When operating on an unlicensed frequency spectrum, small cell 102 'can employ 5G and use the same unlicensed frequency spectrum of 5 GHz as used by Wi-Fi AP 150. Small cell 102', which employs 5G in an unlicensed frequency spectrum, it can reinforce coverage and / or increase the capacity of the access network.
[0035] [0035] gNodeB (gNB) 180 can operate at millimeter wave frequencies (mmW) and / or frequencies almost mmW in communication with UE 104. When gNB 180 operates at mmW or near mmW frequencies, gNB 180 can be referred to as an mmW base station. The extremely high frequency (EHF) is part of the RF in the electromagnetic spectrum. EHF has a range of 30 GHz to 300 GHz and a wavelength between 1 mm and 10 mm. The radio waves in the band can be referred to as a millimeter wave. Almost mmW can extend down to a frequency of 3 GHz with a wavelength of 100 mm. The superhigh frequency band (SHF) extends between 3 GHz and 30 GHz, also referred to as a centimeter wave. Communications using the mmW / almost mmW radio frequency band have extremely high loss of travel and a short range. The 180 mmW base station can use beamform 184 with UE 104 to compensate for extremely high loss of travel and short range.
[0036] [0036] EPC 160 may include an
[0037] [0037] Base station 106 can also be referred to as a gNB, Node B, an evolved Node B (eNB), an access point, a transceiver base station, a radio base station, a radio transceiver, a transceiver function, a set of basic services (BSS), a set of extended services (ESS) or some other suitable terminology. Base station 102 provides an access point to EPC 160 for an UE 104. Examples of UEs 104 include a cell phone, a smart phone, a session initiation protocol (SIP) phone, a laptop computer, a personal digital assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (for example, MP3 player), a camera, a game console, a tablet computer, smart device, body-worn device, vehicle, electric meter, gas pump, large or small kitchen appliance, health care device, implant, a dial or any other similarly functioning device. Some of the UEs 104 can be referred to as IoT devices (for example, parking meter, gas pump, toaster, vehicles, cardiac monitor, etc.). UE 104 can also be referred to as a station, a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless device wireless communications, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a customer or some other terminology proper.
[0038] [0038] With reference again to Figure 1, in certain aspects, the UE 104 can be configured with an exposure metering component 198 configured to perform the exposure measurement, for example, as described in connection with Figures 5 to 10. In certain respects, the base station 180 can be configured with an exposure metering feature component 199 to configure a cell specific feature for exposure metering and / or control the use of the cell specific feature for exposure metering, for example example, as described in combination with Figures 5 to 7 and 11 to 13.
[0039] [0039] Figure 2A is a diagram 200 illustrating an example of a DL subframe in a 5G / NR frame structure. Figure 2B is a diagram 230 that illustrates an example of channels in a DL subframe. Figure 2C is a diagram 250 that illustrates an example of a UL subframe in a 5G / NR frame structure. Figure 2D is a diagram 280 that illustrates an example of channels in a UL subframe. The 5G / NR frame structure can be FDD in which for a specific set of subcarriers (carrier system bandwidth), the subframes in the set of subcarriers are dedicated to DL or UL, or can be TDD in which, for a specific set of subcarriers (carrier system bandwidth), the subframes in the set of subcarriers are dedicated to both DL and UL. In the examples provided by Figures 2A, 2C, the 5G / NR frame structure is assumed to be TDD, with subframe 4, a subframe of DL and subframe 7, a subframe of UL. While subframe 4 is illustrated as providing only DL and subframe 7 is illustrated as providing only UL, any specific subframe can be divided into different subsets that provide both UL and DL. Note that the description below also applies to a 5G / NR frame structure that is FDD.
[0040] [0040] Other wireless communication technologies may have a different frame structure and / or different channels. A frame (10 ms) can be divided into 10 equally sized subframes (1 ms). Each subframe can include one or more time partitions. Each partition can include 7 or 14 symbols, depending on the partition configuration. For partition configuration 0, each partition can include 14 symbols, and for partition configuration 1, each partition can include 7 symbols. The number of carriers in a subframe is based on partition configuration and numerology. For partition configuration 0, different numerologies 0 to 5 allow 1, 2, 4, 8, 16 and 32 carriers, respectively, per subframe. For partition 1 configuration, different numerologies 0 to 2 allow 2, 4 and 8 carriers, respectively, per subframe. Subcarrier spacing and symbol length / duration are a function of numerology. The subcarrier spacing can be equal to 2µ * 15 kKz, where µ is numerology 0 to 5. The symbol length / duration is inversely related to the subcarrier spacing. Figures 2A, 2C provide an example of partition configuration 1 with 7 symbols per partition and numerology 0 with 2 partitions per subframe. The subcarrier spacing is 15 kHz and the symbol duration is approximately 66.7 µs.
[0041] [0041] A resource grid can be used to represent the frame structure. Each time partition includes a resource block (RB) (also referred to as physical RBs (PRBs)) that span 12 consecutive subcarriers. The resource grid is divided into multiple resource elements (REs). The number of bits loaded by each RE depends on the modulation scheme.
[0042] [0042] As illustrated in Figure 2A, some of the REs carry reference signals (pilots) (RS) to the UE (indicated as R). The RS may include demodulation RS (DM-RS) and channel state information reference signals (CSI-RS) for channel estimation in the UE. The RS can also include beam measurement RS (BMRS), beam refining RS (BRS) and phase tracking RS (PT-RS).
[0043] [0043] Figure 2B illustrates an example of several channels within a DL subframe of a frame. The physical control format indicator (PCFICH) channel is within the 0 symbol of interval 0, and carries a control format indicator (CFI) that indicates whether the physical downlink control channel (PDCCH) occupies 1, 2 or 3 symbols (Figure 2B illustrates a PDCCH that occupies 3 symbols). The PDCCH carries downlink control information (DCI) within one or more control channel elements (CCEs), each CCE including nine groups of REs (REGs), each REG including four consecutive REs in a symbol of OFDM.
[0044] [0044] As shown in Figure 2C, some of the REs carry demodulation reference signals (DM-RS) for the channel estimate at the base station. The UE can additionally transmit audible reference signals (SRS) on the last symbol of a subframe. The SRS can have a comb structure, and a UE can transmit SRS on one of the combs. The SRS can be used by a base station to estimate channel quality to enable frequency-dependent programming at UL.
[0045] [0045] Figure 2D illustrates an example of several channels within a UL subframe of a frame. A physical random access channel (PRACH) can be within one or more subframes within a frame based on the PRACH configuration. PRACH can include six consecutive RB pairs within a subframe. PRACH allows the UE to perform initial system access and obtain UL synchronization. A physical uplink control channel (PUCCH) can be located at the edges of the UL system bandwidth. The PUCCH carries uplink control (UCI) information, such as scheduling requests, a channel quality indicator (CQI), a pre-coding matrix indicator (PMI), a classification indicator (RI) and feedback from HARQ ACK / NACK. The PUSCH loads data, and can be additionally used to load a temporary storage status report (BSR), a dynamic power reserve report (PHR) and / or UCI.
[0046] [0046] Figure 3 is a block diagram of a base station 310 in communication with a UE 350 on an access network. In the DL, EPC 160 IP packets can be delivered to a 375 controller / processor. The 375 controller / processor deploys layer 3 and layer 2 functionality. Layer 3 includes a radio resource control (RRC) layer, and layer 2 includes a packet data convergence protocol layer (PDCP), a radio link control layer (RLC), and a media access control layer (MAC). The 375 controller / processor provides RRC layer functionality associated with the diffusion of system information (for example, MIB, SIBs), RRC connection control (for example, RRC connection paging, RRC connection establishment, modification of RRC connection, and RRC connection release), mobility of radio interaccess technology (RAT), and measurement configuration for UE measurement report; PDCP layer functionality associated with header compression / decompression, security (encryption, decryption, integrity protection, integrity checking), and automatic switch support functions; RLC layer functionality associated with the transfer of upper layer packet data units (PDUs), error correction through ARQ, concatenation, segmentation and reassembly of RLC service data units (SDUs), re-segmentation of data PDUs of RLC, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs in transport blocks (TBs), demultiplexing of MAC SDUs of TBs, programming information reporting, error correction through HARQ , priority handling, and logical channel prioritization.
[0047] [0047] The transmit processor (TX) 316 and receive processor (RX) 370 implement layer 1 functionality associated with the various signal processing functions. Layer 1, which includes a physical layer (PHY), can include error detection on transport channels, direct error encoding / decoding (FEC) of transport channels, interleaving, rate compatibility, mapping on physical channels, modulation / demodulation of physical channels and MIMO antenna processing. The TX 316 processor handles mapping for signal constellations based on various modulation schemes (for example, binary phase shift switching (BPSK), quadrature phase shift switching (QPSK), M phase shift switching ( M-PSK), amplitude modulation in M quadrature (M-QAM)). The coded and modulated symbols can then be divided into parallel streams. Each stream can then be mapped to an OFDMA subcarrier, multiplexed with a reference signal (for example, pilot) in the time and / or frequency domain, and then combined together using a Fast Inverse Fourier Transform ( IFFT) to produce a physical channel that carries a time domain OFDMA symbol stream. The OFDMA flow is spatially pre-
[0048] [0048] In the UE 350, each 354RX receiver receives a signal through its respective antenna 352. Each 354RX receiver retrieves the modulated information for an RF carrier and provides the information to the receiving (RX) 356 processor. The TX processor 368 and RX 356 processor deploy layer 1 functionality associated with the various signal processing functions. The RX 356 processor can perform spatial processing on the information to retrieve any spatial streams destined for the UE 350. If multiple spatial streams are destined for the UE 350, they can be combined by the RX 356 processor into a single OFDM flow symbol . The RX 356 processor then converts the OFDM symbol stream from the time domain to the frequency domain using a Fast Fourier Transform (FFT). The frequency domain signal comprises a separate OFDM flow symbol for each OFDM signal subcarrier. The symbols on each subcarrier, and the reference signal, are retrieved and demodulated by determining the most likely signal group points transmitted by base station 310. These smooth decisions can be based on channel estimates computed by the channel estimator 358 Smooth decisions are then decoded and deinterleaved to retrieve the data and control the signals that were originally transmitted by base station 310 on the physical channel. The data and control signals are then supplied to the 359 controller / processor, which implements layer 3 and layer 2 functionality.
[0049] [0049] The 359 controller / processor can be associated with a 360 memory that stores program codes and data. 360 memory can be referred to as a computer-readable medium. At UL, the 359 controller / processor provides demultiplexing between logical and transport channels, packet reassembly, decryption, header decompression, and control signal processing to retrieve IP packets from EPC 160. The 359 controller / processor it is also responsible for error detection using an ACK and / or NACK protocol to support HARQ operations.
[0050] [0050] Similar to the functionality described in combination with DL transmission by base station 310, the 359 controller / processor provides RRC layer functionality associated with the acquisition of system information (eg MIB, SIBs), RRC connections , and measurement report; PDCP layer functionality associated with header compression / decompression, and security (encryption, decryption, integrity protection, integrity verification); RLC layer functionality associated with the transfer of top layer PDUs, error correction through ARQ, concatenation, segmentation and reassembly of RLC SDUs, re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing MAC SDUs in TBs, demultiplexing MAC SDUs from TBs, programming information reporting, error correction through HARQ, priority handling and prioritization of logical channel.
[0051] [0051] Channel estimates derived from a 358 channel estimator from a reference or feedback signal transmitted by base station 310 can be used by the TX 368 processor to select the appropriate encryption and modulation schemes and to facilitate processing space. The spatial streams generated by the TX 368 processor can be provided to the different antenna 352 by means of separate transmitters 354TX. Each 354TX transmitter can modulate an RF carrier with a corresponding spatial flow for transmission.
[0052] [0052] The UL transmission is processed at base station 310 in a similar manner to that described in connection with the function of the receiver in the UE 350. Each receiver 318RX receives a signal through its respective antenna 320. Each receiver 318RX retrieves the information modulated for an RF carrier and provides the information for an RX 370 processor.
[0053] [0053] The 375 controller / processor can be associated with a 376 memory that stores program codes and data. Memory 376 can be referred to as a computer-readable medium. At UL, the 375 controller / processor provides demultiplexing between logical and transport channels, packet reassembly, decryption, header decompression, control signal processing to retrieve IP packets from the UE 350. The controller IP packets / processor 375 can be provided for EPC 160. The controller / processor 375 is also responsible for error detection using an ACK and / or NACK protocol to support HARQ operations.
[0054] [0054] Figure 4 is a diagram 400 illustrating a base station 402 in communication with a UE 404. With reference to Figure 4, base station 402 can transmit a beamformed signal to the UE 404 in one or more from directions 402a, 402b, 402c, 402d, 402e, 402f, 402g, 402h. UE 404 can receive the beamformed signal from base station 402 in one or more receiving directions 404a, 404b, 404c, 404d. UE 404 can also transmit a beamed signal to base station 402 in one or more directions 404a-404d. Base station 402 can receive the beam-formed signal from UE 404 in one or more receiving directions 402a-402h. The 402 / UE 404 base station can perform beam training to determine the best receive and transmit directions for each of the 402 / o UE 404 base station. The transmit and receive directions for the 402 base station can or not be the same. The transmit and receive directions for the UE 404 may or may not be the same.
[0055] [0055] Exposure limits are imposed to limit RF radiation from wireless devices. For example, a SAR limit is imposed for wireless devices that communicate on a sub-6 carrier. The transmission in a sub-6 carrier system may be close to isotropic and may have a low loss of travel.
[0056] [0056] As the free space and other losses for mmW systems are much larger than sub-6 carrier systems, a larger EIRP for transmissions is typically desired. A larger EIRP can be accompanied by the use of antenna arrays to direct a beam in a desired direction, for example, as with the exemplary beam formation described in combination with Figure 4. An example EIRP limit for UE devices in an mmW system, for example, 24 GHz - 60 GHz system, can be 43 dBm. For transportable devices, such as Consumer Premises Equipment (CPE), the limit may be higher, for example, 55 dBm. While a typical UE can operate below the 43 dBm limit, for example, in the 26-34 dBm range, there may be a problem where a transmission beam aimed at a person's skin could violate the MPE limits. So, even while satisfying the EIRP limits, an mmW beam from a handheld device can violate an MPE limit when the mmW beam is directed at a person's body. Figure 5 illustrates portable wireless devices that communicate wirelessly with base stations 502. A first portable device emits a transmission 500 that is close to isotropic, and a second portable device communicates wirelessly with the base station. base (or base stations) 502 with the use of beam formation, for example, with beams 504, 506. For the second portable device, energy can be concentrated in the beam direction, for example, 504, 506, through the use of multiple antenna elements that transmit in a way to add constructively in a specific direction.
[0057] [0057] Static power limits for UE transmissions can guarantee that the MPE limits are satisfied at all times. However, such static power limits could require substantial withdrawal of power in the UE and can lead to a bad uplink band for the UE. A static power withdrawal rule can be based on a distance at which a detector can measure an MPE violation. In order to ensure that the UE maintains compliance with exposure limits while providing an effective range, an UE can perform exposure measurements to detect the actual exposure conditions. When the UE determines an exposure condition, the UE can respond in any of a variety of ways to ensure compliance with exposure limits. The UE can reduce transmission power and / or switch antenna arrays in response to the detection of an exposure condition that would violate the threshold.
[0058] [0058] Then, the UE can perform an in-band exposure measurement, for example, an MEP measurement, to detect the presence of a person, for example, a hand or other body part in a specific beam direction. An example of an MPE measurement can be done using a frequency-modulated continuous-wave radar measurement. For example, the UE can transmit a radio signal with at least one antenna element and the receiver can detect echoes from objects in the signal path. This detection can enable the UE to detect an obstruction and a distance to the obstruction. The UE can respond based on the assumption that the obstruction is a portion of a person's body in the course of a transmission from the antenna. Exemplary detection methods include xpol and radar. In the radar example, the radar signal can scan the signal in frequency over a wide bandwidth and can radiate in the band in which the UE will communicate with a base station. In the xpol example, the transmission may include only a single tone instead of a broadband signal.
[0059] [0059] However, such in-band exposure measurement can cause interference for data transmissions and control in the communication system. In addition, in-band measurements may be inaccurate due to other transmissions in the communication system. In order to make accurate exposure measurements without causing interference to other transmissions in the communication system, the UE can make an exposure measurement based on features that prevent interference to other data / control transmissions. For example, resources may comprise a specific cell-specific resource available for MEP measurements. Determinations can be made by the UE or the network to manage the interference that the UEs that perform measurements can cause between themselves and other data / control transmissions. The UE can then determine whether to adjust a transmission characteristic based on the exposure measurement.
[0060] [0060] Multiple UEs making simultaneous MEP measurements can lead to interference with each other and inaccurate MEP measurements. However, power levels for measuring MPE are generally low. In addition, the measurement occasions for UEs can be randomized in the occurrences of specific cell resource in order to limit this interference. In addition, while a false detection of MPE that meets the threshold can lead to inefficiency, this may not be catastrophic.
[0061] [0061] WIDE SYSTEM GAP
[0062] [0062] An example of a feature for measuring MPE is a wide system gap. However, a large system gap for MEP measurement can lead to system inefficiencies, for example, if the wide system gap needs to be used frequently by UEs. Such a wide system gap can cause many UEs to measure at the same time, for example, leading to inaccurate / noisy measurements. Inaccuracy can be improved by randomizing an intermittent load of MEP measurements. Then, the signals of transmission of MPE can be randomized in different resources of wide system. In this example, the UE can be configured to randomize its MEP measurements from a plurality of wide system gap occasions. By randomizing the MPE transmission signals instead of using a selected subset of resources, you can help avoid high levels of interference. Randomization can improve the inefficiency of the system by improving the accuracy of MEP measurements and avoiding false detection of an exposure condition.
[0063] [0063] AN UNScheduled FEATURE
[0064] [0064] In another example, the UE can make the measurement based on an existing resource opportunity that will enable the UE to make a measurement without significantly disrupting the operation and performance of the system. In 5G systems, dynamic TDD can be employed. Then, the data resources can be dynamically configured to be uplink or downlink based on the control channel indications. In this example, the UE can use a feature during which it has not been programmed for downlink or uplink data to make an MPE measurement. Although a UE can determine, by decoding a control channel, the UE has not been programmed for data in a resource, it may not be desirable to reuse the resource due to the fact that another downlink or uplink transmission in the cell lead to inaccuracies in the measurement of MPE. Similarly, measurements of MPE during resources that carry downlink synchronization signals can lead to inaccuracies in the measurement of MPE.
[0065] [0065] LACUNA PERIOD
[0066] [0066] In another example, the UE can use a period of gap between downlink and uplink resources to measure MPE. The use of the gap period can lead to inefficiency in MEP measurement, for example, due to the fact that when the UE is programmed for downlink data, the UE must first complete the receipt of the downlink data. Then, depending on the distance from the UE from the base station, the receiving delay can consume a portion of the gap period before the UE can start with an MEP measurement. Additionally, when the UE has to send an uplink control channel, an additional restriction is placed on the measurement ability during the gap period. Also, another UE located further away in the cell can perform the advanced transmission in timing that leads to the measurement of interfered and inaccurate MPE. The UE can receive transmissions from distant base stations that are coarse synchronized even after the UE has entered the gap period, thereby leading to an interfered and inaccurate MEP measurement.
[0067] [0067] The MPE detection feature can be located in protection tones between RACH resources or in protection tones between RACH resources and data / controls resource. For example, RACH features can use 139 tones in 6 GHz communication. However, 144 tones can be reserved for RACH bandwidth in 6 GHz communication systems. In this example, there will be 5 protection tones around the actual RACH sequence that may be available for MEP measurement.
[0068] [0068] CELL-SPECIFIC FEATURE
[0069] [0069] In another example, the UE can perform the measurement of MPE during a specific cell resource that is available for measurement of MPE. Examples of a cell-specific feature include any one of a RACH feature, a beam failure recovery feature, or a scheduling request (SR) feature. A resource can comprise a downlink resource or a synchronization signal (SS) resource.
[0070] [0070] The examples will be described in combination with the RACH example. However, aspects can be similarly applied to a beam failure recovery feature or a scheduling request feature. Figure 7 illustrates an example of MPE 700 measurement performed during unused RACH resources 704 and
[0071] [0071] For example, a RACH resource is predictably an uplink resource, with no concern for downlink transmission interference. The UE can use the RACH feature for MEP measurement when the UE does not need to use the feature to perform RACH or beam access recovery. The use of the RACH feature provides several benefits. The RACH resource is expected to be an occasion for EU transmission as opposed to data resources. The RACH feature is designed for low usage to enable UEs to gain access to the system quickly and reliably. Therefore, RACH resources should be less inaccurate in measuring MPE. RACH opportunities occur relatively frequently, for example, compared to the needs of measuring MEPs. For example, a RACH resource can occur every 5 to 20 ms. Also, a RACH failure may not be catastrophic, as a new randomized trial is typically supported with increased power. Therefore, an UE that fails RACH due to interference caused by measuring MEPs should have an opportunity to retry.
[0072] [0072] Although a RACH feature provides a predictable uplink transmission opportunity for MEP measurement, several interference issues may apply. In a first example of potential interference, a transmission from another UE may cause interference in the MEP measurement. For example, if an MEP measurement is made using a power level of -50 dBm, and the other UE uses a power level of 23 dBm to transmit a RACH. If the distance between the UE that transmits RACH and UE that measures MPE is 1 m, then, at 28 GHz, the interference level will be approximately -38 dBm and the MPE detection will fail. Statistically, the chances of interference from another EU RACH transmission are low, due to the fact that the use of RACH channel is typically low in design.
[0073] [0073] Furthermore, this example also assumes that the antenna subarray for detection of MPE is the subarray that experiences the interference. An MPE signal with an attenuation of 20 dB will be received at -70 dBm. An UE that simultaneously transmits RACH at 30 dBm from a distance of about 50 m distant will have the detection SNR around 0 dB. The MPE signal detection can be designed for such a scenario.
[0074] [0074] An UE can autonomously determine resources for MEP measurement. For example, a UE can perform MEP measurement during any of a feature for which the UE is not programmed, a system gap, a protection feature, a RACH feature, a beam failure recovery feature, an SR resource, an SS resource, etc. The UE can determine the transmission power by measuring MPE, for example, based on the values of loss of downlink path. The UE can perform MEP measurement with the use of selected antenna sub-arrays based on the base station's listening directions, for example, based on the UE's knowledge of the base station's listening directions for RACH resources. A subarray can include a subset of antenna elements within an array of antenna elements. For example, the UE can perform MEP measurement with the use of antenna subarrays based on a listening direction from the base station which has a reduced quality.
[0075] [0075] The UE can determine if it makes an MEP measurement based on an interference power detected in a RACH resource, for example, by hearing for interference in a RACH partition. The UE can use the detected interference power as a measurement of system load in the RACH resource. The UE can then determine whether to measure MPE based on a system load measurement on a specific resource. For example, the UE can measure MPE using a RACH resource when the system load is measured to be below a threshold. RACH resources can include multiple sub-resources that correspond to different Sync Signal (SS) blocks in an SS burst set. The UE can select an SS block, for example, an SS block that has a low signal strength, and perform the MPE measurement based on a corresponding RACH sub-resource for the selected SS block. A RACH resource lifetime can be a single partition, multiple partitions, or a subset of symbols in a partition. Then, the UE can select from the available resources for measuring MEP based on resources during which the UE is likely to experience and / or cause less interference when performing MEP measurement.
[0076] [0076] In other respects, the additional management of the cell-specific resource can be employed by the network to control the use of the cell-specific resource for MEP measurement. So, instead of having a UE, autonomously determine resources for MEP measurement, a network can control or manage resources used for MEP measurement, for example, by spreading or otherwise signaling resource indications that can be used for MEP measurement.
[0077] [0077] In one example, the base station can indicate when RACH occasions, or other available resources, are open only for MEP measurement. In a second example, the base station may indicate that RACH occasions, or other resources, are only available for RACH. In a third example, the base station can indicate to the UE that RACH occasions, or other resources, are available for measuring both RACH and MPE. Then, the network can indicate when an available resource can be used for MEP measurement, and the UE can refrain from using the available resource for MEP measurement unless the indication is received by the network. Alternatively, the network can indicate when an available resource may not be used for measuring MEP, and the UE may use the available resource for measuring MEP unless the indication is received by the base station.
[0078] [0078] The base station can make an indication in any one of a MIB, SIB, other system information, MAC CE, DCI, or RRC message. The indication can also be provided to the UE in a message from another carrier, for example, from an LTE carrier or a 5G sub-6 carrier. For example, a unicast RRC message can be used to tell MEP measurement devices when the devices can or cannot make a measurement on the specific cell feature. In one example, the indication may limit, or otherwise, reduce the use of the resource for MEP measurement.
[0079] [0079] The network can indicate a level of interference on thermal noise that is allowed to measure MPE for each UE. The network can also indicate a maximum receiving power, which indicates the maximum power at which a transmission for measuring MEPs from a UE can be received by a base station. The UE can select an SS block and a corresponding RACH sub-resource for measuring MPE to satisfy the maximum receive power limit. For example, the UE can select transmitted SS blocks that the UE cannot detect in order to determine a corresponding resource for MEP measurement.
[0080] [0080] The network can also explicitly schedule periods for measuring MPE. The programmed period can be based on an amount of pending uplink data to be transmitted to a UE. Then, the network can be aware of which UEs have a need to transmit uplink data and can program resources for MEP measurement accordingly. In scheduling periods for measuring MEPs, the network can group UEs into groups that can perform MEP measurements on a specific resource, for example, in groups that have disparate path loss.
[0081] [0081] In managing the resources available for MEP measurement, the base station can use a short-term promised RACH load measurement to make a determination regarding whether to allow MEP measurement on a RACH resource. There may be a correlation of time and space in the use of RACH, for example, a higher RACH load during peak hours or a greater load in specific locations, such as railway stations, etc. The correlation of time and space can be used by the base station to predict the use of the RACH resource and to reduce the use of the RACH resource for MEP measurements during times that have an increased RACH load and / or in locations that have an increased RACH load. Similarly, the base station can use a forecast of RACH load resources in time and physical location to allow an increased amount of MEP measurement with the use of RACH resources during expected times to have a lower RACH load and / or at locations expected to have a lower RACH load.
[0082] [0082] In a second example of potential interference, a MEP measurement from a first UE may interfere with the detection of RACH from another UE. The power spectral density of the UE that performs the MEP measurement may be limited to address this potential interference problem. For example, a cell margin UE that has approximately 140 dB of path loss may need to RACH the system. An SNR of -6dB may be required to detect the signal, and the UE can transmit in 1 RB of bandwidth (-1.44 MHz in 120KHz of SCS). With a 5dB base station Noise Figure (NC), the noise power in this BW can be -107 dBm. Therefore, the sensitivity to detect RACH can be around - 113 dBm. If an interference on the target thermal noise allowed by a single UE measuring MPE, as seen at the base station, is set to -20 dB and that UE has a loss of travel of 60 dB to the base station over an approximate distance 1 m), then, the spectral power density of the UE that performs the MPE measurement can be limited to -67 dBm at 1.44 MHz. This limit can be prohibitively low for making the MPE measurement. Therefore, similar to the first example of potential interference, a network can manage or control the use of the resource for measuring MEP.
[0083] [0083] However, if the UE is only 10 m away from the base station, then the power of the UE that performs the MEP measurement can be increased by 20 dB to create the same level of interference as the UE that it is just 1 m far from the base station. At -47 dBm by 1.44 MHz, MPE measurement becomes much more practical, and resources can be used without an explicit network indication. The UE can then use the available resources without network management or control, for example, as an interference below 20 dB will cause negligible degradation to the RACH performance of the other UE.
[0084] [0084] With multiple UEs that perform MEP measurement simultaneously, for example, with 10 UEs that perform simultaneous MPE measurement each from a distance of 10 m, the total interference power that affects RACH is still 10 dB below the noise limit. Each user can take a total MEP measurement on a single RACH resource and may not need to take another measurement for approximately 100 ms. In addition, a RACH resource can occur every 20 ms. So, the available RACH resources can provide capacity for 50 UEs at a distance of 10 m to perform MEP measurements without disrupting RACH performance. The UEs are likely to be distributed at various points in the cell. This distribution can enable UEs over an additional distance to perform additional MEP measurements without disrupting RACH performance. This may be desirable, as UEs that are furthest from the base station are more likely to violate an MPE threshold.
[0085] [0085] In certain respects, a UE may use a knowledge of the listening direction of the base station in order to perform MEP measurements on antenna sub-arrays that correspond to a poor listening direction for the base station. The UE can then select antenna sub-arrays for a specific antenna module that has a reduced amount as a listening direction for the base station to use when making MPE measurements. For example, RACH resources can be divided into ranges that have a correspondence with SS blocks. This can allow the UE to determine a quality of the listening direction. A UE that needs to measure MPE can be, for example, in a state connected with the beam measurements that are available. Then, the UE may be able to program its MEP measurement to be compatible with the antenna sub-arrays for which the RACH listening direction at the base station is poor.
[0086] [0086] In a third example of potential interference, multiple UEs, each measuring MPE, can cause interference between each other's MEP measurements. Power level limits can be used to limit interference between MPE measurements. In addition, randomized times for measuring MEP and randomized use of antenna arrays to make MEP measurements can reduce the severity of this problem. If this type of interference is a problem, a base station can coordinate the measurement of MPE in a controlled manner. For example, the base station can coordinate the number of UEs that perform the measurement of MPE on a given resource. In addition, the base station can group sets of UEs into groups that have disparate path loss, for example, where the UEs in a grouped set have different levels of path loss, and allow the group of UEs to perform the measurement of MEPs in a specific resource in order to reduce an interference level for the MEPs measurement of each EU.
[0087] [0087] When the MEP measurement indicates an exposure condition, the UE may take any number of actions to comply with the MEP limits. For example, the UE can reduce a transmission power. The UE can switch the transmission to a different antenna array, for example, to an antenna array that is unobstructed by the person's body. This can change the direction of transmission. The UE can operate to increase transmission power when MPE measurements indicate that an antenna array is unobstructed by a person's body. Similarly, the UE can reduce the transmission power by detecting an obstruction based on the MEP measurement.
[0088] [0088] Figure 8 is a flow chart 800 of a wireless communication method. The method can be performed by a UE (e.g., UE 104, 350, 404, 708, 1250, apparatus 902, 902 '). Optional aspects are illustrated using a dashed line. In 802, the UE receives, from a base station, an indication of a cell-specific resource. For example, the indication can indicate cell-specific features available for an exposure measurement, for example, MEP measurement. The cell-specific feature may be contained in a system gap, for example, a large system gap configured for measurement. The cell-specific resource may comprise a uplink cell-specific resource. The cell-specific feature can include a protection feature between a RACH feature and a data or control feature or a protection feature between two RACH features in the frequency domain. The cell-specific feature may comprise at least one of a RACH feature, a beam failure recovery feature, or an SR feature. The cell-specific resource may comprise an existing resource opportunity, for example, an unscheduled uplink resource and / or a gap between a downlink transmission and an uplink transmission. The cell-specific resource may comprise a downlink resource. The cell-specific resource can comprise at least one SS resource, for example, the UE can perform the measurement based on an SS block for which the UE has not detected a signal, for example, when the UE detects a low RSRP . The UE can then perform the measurement while transmitting an SS block that the UE has not detected.
[0089] [0089] In 812, the UE performs a measurement based on the specific cell resource. The UE can determine a transmission power to perform the measurement based on the values of downlink loss. For example, the UE can autonomously determine the transmission power for the measurement based on the loss of downlink path or it can determine the transmission power for the measurement based, additionally, on a base station indication.
[0090] [0090] In one example, the UE can perform the measurement based on the programming configuration, where the UE performs the measurement based on a resource for which the base station has not programmed the UE. The UE can then receive a control channel and determine an unscheduled resource to use to perform the MEP measurement.
[0091] [0091] In an example in which the specific resource the cell comprises a RACH resource, the UE can program at least one subarray to perform the measurement based on a RACH resource listening direction. The UE can further determine the possibility of performing the measurement on a specific RACH resource based on an interference power received on a previous RACH resource. This can enable the UE to assess the system load for the RACH resource, for example, based on the interference power detected during the previous RACH resource.
[0092] [0092] The RACH resource can comprise multiple sub-resources, each sub-resource corresponding to a different SS block within an SS intermittent set. The duration of the RACH resource can comprise at least a subset of symbols in a partition. For example, the RACH feature available for measuring MEPs can comprise a single partition. In another example, the RACH feature can comprise multiple partitions. In yet another example, the RACH feature can comprise a subset of symbols in a partition. The UE can select an SS block and perform the measurement at 812 based on a corresponding RACH sub resource for the selected SS block. For example, the UE can select an SS block based on a signal strength, for example, an SS block that has a reduced signal strength. If the UE detects a low signal strength, for example, RSRP, for an SS block, the low signal strength may indicate that the base station is transmitting in a different direction at that time. By selecting an SS block that has a reduced signal strength to perform the MEP measurement, the UE reduces the potential interference caused by the MEP measurement and the potential for inaccuracies in the MEP measurement. Similarly, during the RACH feature on a partition, the base station can also hear in different directions. It may be beneficial for the UE to perform MEP measurement during these moments, due to the fact that the UE is less likely to interfere with the signal from another UE.
[0093] [0093] The network can control the use of the resource for MEP measurement. For example, the UE may receive a second indication from the network at 808 regarding the use of the cell-specific resource for MEP measurement. In one example, the UE can receive a second indication from a network that the cell-specific resource can be used for measurement. The UE can be configured to refrain from using the MEP measurement feature, unless the UE receives an indication that the feature can be used for MEP measurement. In another example, the UE may receive a second indication from the network that the cell-specific feature may not be used for measurement, which may cause the UE to refrain from using the MEP feature. For example, the UE may be free to use the MEP measurement feature, unless an indication is received from the base station letting the UE know that the feature may not be used for MEP measurement.
[0094] [0094] The indication may indicate the ability to use the cell-specific resource for measurement and may comprise any of a parameter in a MIB, a SIB, other system information, an Access Control Control Element (CE) (MAC), Downlink Control (DCI) information, a Radio Resource Control (RRC) message, or in a message from another carrier (for example, LTE carrier or sub-6 5G carrier) ). The indication can place a limit or, otherwise, restrict or reduce the use of the cell-specific resource for measurement. The indication related to the use of the cell-specific resource can also be indicated in a second indication in 808, separate from the indication of the cell-specific resource in 802.
[0095] [0095] In 810, the UE can receive a programmed period for the measurement of the base station. Then, the period scheduled for an UE to perform the MEP measurement can be explicitly controlled by the base station. In another example, the period for measuring MPE can be statistically controlled, for example, the base station can indicate that the UE can transmit MPE signals an N number of times in a duration of T seconds. The base station can indicate to the UE that during a C number of cell-specific resources or during an S number of wide-system gaps, the UE can randomly select resources in the cell-specific resources / wide-system gap for transmission of the MPE sign.
[0096] [0096] The UE can receive additional information from the base station that controls the MEP measurement. For example, in 804, the UE may receive an interference limit on thermal noise for the measurement of a base station. The UE can then use the interference limit on the thermal noise indicated when performing the MPE measurement. In 806, the UE can receive a maximum receiving power at which a transmission for measurement can be received at a base station. The UE can use the maximum received receive power to determine a transmit power for the MEP measurement performed at 812.
[0097] [0097] In another example, the UE can perform the measurement during the cell-specific resource based on an uplink grant from the base station, for example, gNB. For example, the UE can perform the measurement when the base station has not programmed any uplink data for the UE on the same resource, for example, partition. For example, when a minimum gap of N partitions can be provided between PDCCH containing an UL grant and the corresponding PUSCH. In one example, the base station can program PUSCH in regions multiplexed by frequency division of the cell-specific uplink resource (for example, RACH). In another example, the base station can program PUSCH in the same cell-specific uplink resource time-frequency regions (for example, RACH) using multiple receiving panels / subarrays. For example, a panel can receive RACH while the panel receives PUSCH on the same time-frequency resources. If the cell-specific uplink resource (for example, RACH resource) occurs on partition X, the UE can monitor PDCCH until the XN partition verifies that the UE has programmed any uplink / control data on partition X. If the UE has programmed uplink / control data on partition X, the UE can refrain from performing any MPE measurement on partition X and can instead transmit uplink / control data. If the UE has not programmed the uplink / control data on partition X, the UE can perform MPE measurement on partition X.
[0098] [0098] In 814, the UE determines whether to adjust a transmission characteristic of the user equipment based on the possibility of the measurement result performed in 812 to satisfy a limit. The transmission characteristic can comprise any combination of a transmission power, a transmission direction, an antenna array selection or an antenna module selection. For example, when an MEP measurement meets the limit, the measurement can indicate an obstruction in the antenna element by a person's body. In response to the detection of such an obstruction, in 818, the UE sets a transmission characteristic of the user equipment when the measurement satisfies the limit. The UE can reduce a transmission power and / or switch antenna elements for transmission in order to comply with the MPE limits. In another example, the limit may indicate that there is no potential problematic exposure condition for a person. In this example, the UE can adjust the transmission characteristic to 818 by increasing the transmission power and / or switching to a more preferred antenna element. When a transmission characteristic is changed in the UE in 818, the UE may indicate to the base station the transmission characteristic adjustment in 820. In contrast, when the limit is not satisfied in 914, the UE may refrain from adjusting a transmission feature in 816.
[0099] [0099] Figure 9 is a conceptual 900 data flow diagram that illustrates the data flow between different media / components in an exemplary device
[0100] [0100] The device may include an interference component on thermal noise 916 that receives an indication of an interference limit on thermal noise and that provides the limit for measurement component 910 for use in performing the MEP measurement. The apparatus may include a maximum receive power component 918 configured to receive a maximum receive power at which a transmission for measurement can be received at a base station. The maximum receive power component 918 can provide the maximum indication receive power for measuring component 910 for use in performing MPE measurement.
[0101] [0101] The device can comprise a selection component 914 configured to select a resource, from the resources available for MEP measurement, to perform MEP measurement. For example, the selection component 914 can receive the indication related to the resources available for the measurement of MPE of the resource component 908. The selection component 914 can autonomously select a resource, for example, which can be based on the measurements made by the EU.
[0102] [0102] Alternatively, the selection component may receive additional indications from the 950 base station that it manages or otherwise controls the use of the resources available for MEP measurement. The device may include components that receive additional indications from the 950 base station that controls the use of MEP measurement capabilities. For example, the selection component may receive a second indication that indicates that the device may use a specific feature in the cell for measuring MEP, or the selection component may receive a second indication that indicates that the device may not use a specific feature. the cell for measuring MEP. The apparatus may include a programming component 920 that receives a programming configuration for the UE. Selection component 914 can use the programming configuration to select an unscheduled resource to perform the MEP measurement. The programming component can receive a programmed period for the measurement of MPE and can provide the programmed period for the selection component 914.
[0103] [0103] The device can include additional components that perform each of the algorithm blocks in the flowchart mentioned earlier in Figure 8. Thus, each block in the flowcharts mentioned above in Figure 8 can be made by a component and the device can include one or more of these components. The components can be one or more hardware components specifically configured to carry out the defined processes / algorithm, deployed by a processor configured to carry out the defined processes / algorithm, stored in a computer-readable medium for deployment by a processor, or some other combination thereof.
[0104] [0104] Figure 10 is a diagram 1000 that illustrates an example of a hardware deployment for a device 902 'that employs a 1014 processing system. The 1014 processing system can be deployed with a bus architecture, represented, in general , via the 1024 bus. The 1024 bus can include any number of interconnect buses and bridges that depend on the specific application of the 1014 processing system and general design restrictions. The 1024 bus joins several circuits that include one or more processors and / or hardware components, represented by processor 1004, components 904, 906, 908, 910, 912, 914, 916, 918, 920 and the computer-readable medium / memory 1006. The 1024 bus can also connect several other circuits such as timing sources, peripherals, voltage regulators and power management circuits, which are well known in the art and therefore will not be described further.
[0105] [0105] Processing system 1014 can be coupled to a 1010 transceiver. Transceiver 1010 is coupled to one or more antennas 1020. Transceiver 1010 provides a means for communicating with various other devices on a transmission medium.
[0106] [0106] In one configuration, the device 902/902 'for wireless communication includes means for receiving an indication that it comprises a specific cell-specific feature available for MEP measurement, means for performing measurement based on the specific cell-specific feature, means of determining whether a transmission characteristic of the user equipment fits based on whether the measurement meets a threshold, means of receiving an indication from a network that the cell-specific resource can be used for measurement, means of receiving a indication that the cell-specific feature may not be used for measurement, means for receiving an indication related to the use of an uplink feature for measurement, means for receiving an interference limit on thermal noise for the measurement of a base station, means for receiving a maximum receiving power at which an MPE use can be received at a base station, means for receiving a programmed period o for the measurement of a base station, means for adjusting a transmission characteristic of the user equipment when the measurement satisfies the limit, and means for indicating an adjustment of the transmission characteristic for a base station. The aforementioned means can be one or more of the aforementioned components of the apparatus 902 and / or the processing system 1014 of the apparatus 902 'configured to perform the functions cited by the aforementioned means. As described above, processing system 1014 may include processor TX 368, processor RX 356 and controller / processor 359. Thus, in a configuration, the aforementioned means may be processor TX 368, processor RX 356 and the controller / processor 359 configured to perform the functions mentioned by the means mentioned above.
[0107] [0107] Figure 11 is a flow chart 1100 of a wireless communication method. The method can be carried out by a base station (e.g., base station 102, 180, 310, 402, 502, 950, apparatus 1202, 1202 '). In 1102, the base station sets up a cell-specific feature on which a user device can perform an MEP measurement, for example, an MEP measurement as described in combination with Figures 5 to 7. The cell-specific feature can comprise at least one of a RACH feature, a beam failure recovery feature and / or a schedule request feature. In another example, the cell-specific resource may comprise a downlink resource.
[0108] [0108] In 1104, the base station controls the use of the cell-specific resource for the measurement of MPE. For example, the base station can transmit an indication that an uplink resource can be used for the measurement of MPE. Then, the UE can expect to receive an indication that the resource can be used for MEP measurement before taking measurements based on the resource. As another example, the base station may transmit an indication that an uplink resource may not be used for the measurement of MPE. The UE can then choose whether or not to use the MEP measurement feature, unless the base station indicates that the feature cannot be used. The base station can be a parameter that prevails when an uplink resource can be used to measure MPE. The base station can transmit an indication regarding the use of an uplink resource for the measurement of MPE, where the indication comprises a parameter in at least one among a MIB, SIB, other system information, a MAC CE, DCI or RRC message. The indication can restrict or, on the other hand, place a limit on the use of an UE of the uplink resource for the measurement of MPE. The base station can transmit a programmed period for measuring MPE to user equipment. The programmed period for the measurement of MPE can be based on a pending uplink data transmission to the user equipment.
[0109] [0109] The cell-specific resource may comprise a RACH resource. In this example, the base station can measure the load during the cell-specific resource at 1106, for example, the RACH load. Then, the base station can transmit an indication that identifies the limits in the use of the RACH resource for the measurement of MPE based on the RACH load measured in
[0110] [0110] The base station can set an interference limit on thermal noise for the measurement of MPE for the UE in 1108 that the base station can indicate to the UE, for example, in a transmission. The base station can configure, in 1110, a maximum receiving power at which a transmission from the UE for measuring MPE can be received at the base. The base station can indicate the maximum receiving power for the UE, for example, in a transmission.
[0111] [0111] The base station can group, in 1112, a plurality of UEs to perform the measurement of MPE in the system gap. The grouping can be based on the plurality of UEs that have a different path loss.
[0112] [0112] Figure 12 is a conceptual 1200 data flow diagram that illustrates the data flow between different media / components in an exemplary device
[0113] [0113] The device can include a load measurement component 1212 configured to measure a load in a specific cell resource for measuring MEP. For example, the load measurement component 1212 can measure a RACH load, and the control component 1210 can limit or otherwise control the use of the cell-specific feature for MEP measurement based on the measured load for the resource.
[0114] [0114] The apparatus may include an interference component on thermal noise 1214 which may transmit an interference limit on thermal noise for the measurement of MPE for the UE 1250 by means of the transmission component 1206. The apparatus may include a component maximum receiving power 1216 which transmits maximum receiving power to the UE 1250 via transmission component 1206, the maximum receiving power being a maximum at which a transmission from the UE 1250 for measuring MPE can be received at the base station.
[0115] [0115] The apparatus may include clustering component 1218 configured to group a plurality of UEs to perform MEP measurement. The grouping can be based on the plurality of user equipment that has a different path loss and can be provided for the control component 1210 to control / manage the resource for measuring MEP.
[0116] [0116] The device can include additional components that make each of the algorithm blocks in the flowchart mentioned earlier in Figure 11. Thus, each block in the flowchart mentioned previously in Figure 11 can be made by a component and the device can include one or more of these components. The components can be one or more hardware components specifically configured to carry out the defined processes / algorithm, deployed by a processor configured to carry out the defined processes / algorithm, stored in a computer-readable medium for deployment by a processor, or some other combination thereof.
[0117] [0117] Figure 13 is a 1300 diagram illustrating an example of a hardware deployment for a 1202 ’device that employs a processing system
[0118] [0118] The 1314 processing system can be coupled to a 1310 transceiver. The 1310 transceiver is coupled to one or more 1320 antennas. The 1310 transceiver provides a means for communicating with several other devices on a transmission medium. Transceiver 1310 receives a signal from one or more antennas 1320, extracts information from the received signal, and provides the extracted information to processing system 1314, specifically receiving component 1204. In addition, transceiver 1310 receives information from the processing system 1314, specifically of transmission component 1206, and based on the information received, generates a signal to be applied to one or more antennas 1320. The processing system 1314 includes a processor 1304 coupled to a computer-readable medium / memory 1306. The processor 1304 is responsible for general processing, including running software stored in the 1306 computer-readable medium / memory. The software, when run by processor 1304, causes processing system 1314 to perform the various functions described above for any specific device . The computer-readable medium / memory 1306 can also be used to store data that is handled by the processor 1304 when running the software. The processing system 1314 additionally includes at least one of the components 1204, 1206, 1208, 1210, 1212, 1214, 1216, 1218. The components can be software components running on processor 1304, resident / stored in the computer / memory readable medium 1306, one or more hardware components coupled to the 1304 processor, or some combination thereof. Processing system 1314 may be a component of base station 310 and may include memory 376 and / or at least one of the TX 316 processor, the RX 370 processor and the 375 controller / processor.
[0119] [0119] In one configuration, the device 1202/1202 'for wireless communication includes means for configuring a cell-specific feature on which a user device can perform an MEP measurement, means for controlling the use of the cell-specific feature for measuring MEP, means for transmitting an indication that an uplink resource may be used for measuring MEP, means for transmitting an indication that an uplink resource may not be used for measuring MEP, means for define a parameter that prevails when an uplink resource can be used for the measurement of MPE, means for transmitting an indication regarding the use of an uplink resource for the measurement of MPE, means for measuring a RACH load, means to transmit an interference limit on thermal noise for the measurement of MPE, means for transmitting a maximum receiving power at which a use of MPE can be received at the base station, means for transmitting a programmed period for the measurement of MPE to a user equipment, and means for grouping a plurality of UEs to perform the measurement of MPE in the system gap.
[0120] [0120] It is understood that the specific order or hierarchy of the blocks in the revealed processes / flowcharts is an illustration of the exemplary approaches. Based on the preferences of the project, it is understood that the order and the specific hierarchy of the blocks in the processes / flowcharts can be reorganized. In addition, some of the blocks can be combined or omitted. The attached method claims the elements present in the various blocks in a sample order, and is not intended to be limited to the specific order or hierarchy presented.
[0121] [0121] The above disclosure is provided to allow anyone skilled in the art to practice the various aspects described in this document. Various changes in these aspects will be readily apparent to those skilled in the art, and the generic principles defined in this document can be applied to other aspects. Thus, the claims are not intended to limit the aspects shown in this document, but must be in accordance with the total scope consistent with the claims of the language, in which the reference to an element in the singular is not intended to mean “one and only one ”unless specifically established, but“ one or more ”instead. The word "exemplary" is used in this document to mean "to serve as an example, occurrence or illustration". Any aspect described in this document as “exemplary” should not necessarily be interpreted as preferential or advantageous over other aspects. Unless otherwise stated, the term "some" refers to one or more.
Combinations such as “at least one of A, B or C”, “one or more of A, B or C”, “at least one of A, B and C”, “one or more of A, B and C” and "A, B, C or any combination thereof" includes any combination of A, B and / or C, and may include multiples of A, multiples of B or multiples of C.
Specifically, combinations such as “at least one of A, B or C”, “one or more of A, B or C”, “at least one of A, B and C”, “one or more of A, B and C ”and“ A, B, C or any combination thereof ”may be A only, B only, C only, A and B, A and C, B and C, or A and B and C, where any of such combinations may contain one or more members or members of A, B or C.
All structural and functional equivalents of the elements of the various aspects described throughout this disclosure that are known or will be known later on by those of ordinary skill in the art are expressly incorporated herein by reference and are intended to be covered by the claims.
In addition, nothing disclosed in this document is intended to be dedicated to the public, regardless of whether such disclosure is explicitly mentioned in the claims.
The words "module", "mechanism", "element", "device" and the like may not be a substitute for the word "means". In this way, no claimed element should be interpreted as a more functional means unless the element is expressly cited using the expression "means for".

权利要求:
Claims (114)
[1]
1. Wireless communication method in a user's equipment (UE), which comprises: receiving an indication of a specific cell resource; perform a measurement based on the specific cell resource; and determining the possibility of adjusting a transmission characteristic of the UE based on the possibility that the measurement satisfies a limit.
[2]
2. Method according to claim 1, in which the indication indicates that the specific feature of the cell is available for the measurement of maximum permissible exposure (MPE).
[3]
A method according to claim 1, wherein the cell-specific resource is contained within a system gap.
[4]
A method according to claim 1, wherein the cell-specific resource comprises a specific uplink cell resource.
[5]
5. Method, according to claim 1, in which the cell-specific resource comprises at least one of a Random Access Channel (RACH) resource, a beam failure recovery resource or a scheduling request resource ( SR).
[6]
A method according to claim 5, wherein the UE determines a transmission power for the measurement based on the values of downlink loss.
[7]
7. Method according to claim 5, wherein the UE programs at least one subarray to perform the measurement based on the RACH resource listening directions.
[8]
8. Method according to claim 5, in which the UE determines whether to make the measurement based on an interference power received in a previous RACH resource.
[9]
9. Method according to claim 5, in which the cell-specific resource comprises the RACH resource, in which the RACH resource comprises multiple sub-resources, each sub-resource corresponding to a synchronization signal block (SS) different in an SS blink set.
[10]
A method according to claim 9, wherein a duration of the RACH resource comprises at least a subset of symbols within a partition.
[11]
11. Method according to claim 9, in which the UE selects an SS block and performs the measurement based on a corresponding RACH sub-resource for the selected SS block.
[12]
12. The method of claim 11, wherein the UE selects an SS block that has a reduced signal strength.
[13]
13. Method according to claim 1, which further comprises: receiving a second indication from a network that the cell-specific resource can be used for measurement.
[14]
14. The method of claim 1, which further comprises:
receive a second indication from a network that the cell-specific feature may not be used for measurement.
[15]
15. Method, according to claim 1, in which the indication indicates an ability to use the cell-specific resource for measurement, in which the indication comprises a parameter in at least one of a Master Information Block (MIB), other system information, Media Access Control (EC) Control Element (MAC), Downlink Control (DCI) information, a Radio Resource Control (RRC) message, or in a carrier message different in that the indication places a limit on the use of the cell-specific resource for measurement.
[16]
16. The method of claim 15, wherein the different carrier comprises a Long Term Evolution (LTE) carrier or a sub-6 5G carrier.
[17]
17. Method according to claim 1, which further comprises: receiving an interference limit on thermal noise for the measurement of a base station.
[18]
18. The method of claim 1, which further comprises: receiving a maximum receiving power at which a transmission for measurement can be received at a base station.
[19]
19. Method according to claim 1, which further comprises: receiving a programmed period for the measurement of a base station.
[20]
20. Method according to claim 1, wherein the cell-specific resource comprises an existing resource opportunity, the existing resource opportunity comprising at least one of an unscheduled uplink resource and a gap between a transmission downlink and an uplink transmission.
[21]
21. Method according to claim 1, which further comprises: adjusting the transmission characteristic of the UE when the measurement satisfies the limit.
[22]
22. The method of claim 21, wherein the transmission characteristic comprises at least one of a transmission power, a transmission direction, an antenna array selection or an antenna module selection.
[23]
23. The method of claim 22, further comprising: indicating an adjustment of the transmission characteristic to a base station.
[24]
24. Method according to claim 1, wherein the cell-specific feature includes a protective tone between a Random Access Channel (RACH) feature and a data or control feature or between two RACH features in a frequency domain.
[25]
25. The method of claim 1, wherein the cell-specific resource comprises a downlink resource.
[26]
26. The method of claim 25, wherein the cell-specific resource comprises at least one sync signal (SS) resource.
[27]
27. The method of claim 26, wherein the UE performs the measurement based on an SS block for which the user equipment has not detected a signal.
[28]
28. Method according to claim 1, in which the UE performs the measurement during the specific resource to the cell based on an uplink concession from the base station.
[29]
29. Method according to claim 28, in which the UE performs the measurement when the base station has not programmed any uplink data for the UE in the same resource.
[30]
30. Apparatus for wireless communication in a user equipment (UE) comprising: a memory; and at least one processor coupled to the memory and configured to: receive an indication from a specific cell; perform a measurement based on the specific cell resource; and determining the possibility of adjusting a transmission characteristic of the UE based on the possibility that the measurement satisfies a limit.
[31]
31. Apparatus according to claim 30, wherein the indication indicates that the specific cell resource is available for the measurement of maximum permissible exposure (MPE).
[32]
32. Apparatus according to claim 30, wherein the cell-specific resource is contained within a system gap.
[33]
33. The apparatus of claim 30, wherein the cell-specific resource comprises an uplink cell-specific resource.
[34]
34. Apparatus according to claim 30, wherein the cell-specific feature comprises at least one of a Random Access Channel (RACH) feature, a beam failure recovery feature or a scheduling request feature ( SR).
[35]
35. Apparatus according to claim 34, wherein the UE determines a transmission power for the measurement based on the values of downlink loss.
[36]
36. Apparatus according to claim 34, wherein the UE programs at least one subarray to perform the measurement based on the RACH resource listening directions.
[37]
37. Apparatus according to claim 34, in which the UE determines whether to make the measurement based on an interference power received in a previous RACH resource.
[38]
38. Apparatus according to claim 34, in which the cell-specific resource comprises the RACH resource, in which the RACH resource comprises multiple sub-resources, each sub-resource corresponding to a synchronization signal block (SS) different in an SS blink set.
[39]
39. Apparatus according to claim 38, wherein a duration of the RACH resource comprises at least a subset of symbols within a partition.
[40]
40. Apparatus according to claim 38,
where the UE selects an SS block and performs the measurement based on a corresponding RACH sub-resource for the selected SS block.
[41]
41. Apparatus according to claim 40, wherein the UE selects an SS block that has a reduced signal strength.
[42]
42. Apparatus according to claim 30, wherein the at least one processor is additionally configured to: receive a second indication from a network that the cell-specific resource can be used for measurement.
[43]
43. Apparatus according to claim 30, wherein the at least one processor is additionally configured to: receive a second indication from a network that the cell-specific resource may not be used for measurement.
[44]
44. Apparatus, according to claim 30, in which the indication indicates an ability to use the cell-specific resource for measurement, in which the indication comprises a parameter in at least one of a Master Information Block (MIB), other system information, Media Access Control (EC) Control Element (MAC), Downlink Control (DCI) information, a Radio Resource Control (RRC) message, or in a carrier message different in that the indication places a limit on the use of the cell-specific resource for measurement.
[45]
45. Apparatus according to claim 44, wherein the different carrier comprises a carrier of
Long Term Evolution (LTE) or a sub-6 5G carrier.
[46]
46. Apparatus according to claim 30, wherein the at least one processor is additionally configured to: receive an interference limit on thermal noise for the measurement of a base station.
[47]
47. Apparatus according to claim 30, wherein the at least one processor is additionally configured to: receive a maximum receiving power at which a transmission for measurement can be received at a base station.
[48]
48. Apparatus according to claim 30, wherein the at least one processor is additionally configured to: receive a programmed period for the measurement of a base station.
[49]
49. Apparatus according to claim 30, wherein the cell-specific resource comprises an existing resource opportunity, the existing resource opportunity comprising at least one of an unscheduled uplink resource and a gap between a transmission downlink and an uplink transmission.
[50]
50. Apparatus according to claim 30, wherein the at least one processor is additionally configured to: adjust the transmission characteristic of the UE when the measurement satisfies the limit.
[51]
51. Apparatus according to claim 50,
wherein the transmission characteristic comprises at least one of a transmission power, a transmission direction, an antenna array selection or an antenna module selection.
[52]
52. Apparatus according to claim 51, wherein the at least one processor is additionally configured to: indicate a transmission characteristic setting for a base station.
[53]
53. Apparatus according to claim 30, wherein the cell-specific feature includes a protective tone between a Random Access Channel (RACH) feature and a data or control feature or between two RACH features in a frequency domain.
[54]
54. Apparatus according to claim 30, wherein the cell-specific resource comprises a downlink resource.
[55]
55. Apparatus according to claim 54, wherein the cell-specific resource comprises at least one synchronization signal (SS) resource.
[56]
56. Apparatus according to claim 55, wherein the UE performs the measurement based on an SS block for which the user equipment has not detected a signal.
[57]
57. Apparatus, according to claim 30, in which the UE performs the measurement during the specific resource to the cell based on an uplink concession from the base station.
[58]
58. Apparatus according to claim 57, in which the UE performs the measurement when the base station has not programmed any uplink data for the UE in the same resource.
[59]
59. Apparatus for wireless communication in a user equipment (UE) which comprises: means for receiving an indication of a specific cell resource; means for performing a measurement based on the specific cell resource; and means for determining the possibility of adjusting a transmission characteristic of the UE based on the possibility that the measurement satisfies a limit.
[60]
60. Apparatus according to claim 59, wherein the indication indicates that the specific cell feature is available for the measurement of maximum permissible exposure (MPE).
[61]
61. An apparatus according to claim 59, further comprising: means for receiving a second indication from a network that the cell-specific resource can be used for measurement.
[62]
62. An apparatus according to claim 59, further comprising: means for receiving a second indication from a network that the cell-specific resource may not be used for measurement.
[63]
63. An apparatus according to claim 59, further comprising: means for receiving an interference limit on thermal noise for the measurement of a base station.
[64]
64. An apparatus according to claim 59, further comprising: means for receiving a maximum receiving power at which a transmission for measurement can be received at a base station.
[65]
65. Apparatus according to claim 59, further comprising: means for receiving a programmed period for measuring a base station.
[66]
66. The apparatus of claim 59, further comprising: means for adjusting the transmission characteristic of the UE when the measurement satisfies the limit.
[67]
67. Apparatus according to claim 66, wherein the transmission characteristic comprises at least one of a transmission power, a transmission direction, an antenna array selection or an antenna module selection, the apparatus being further comprises: means for indicating an adjustment of the transmission characteristic for a base station.
[68]
68. Computer readable medium that stores computer executable code for wireless communication in a user equipment (UE) that comprises the code to: receive an indication of a specific cell resource; perform a measurement based on the specific cell resource; and determining the possibility of adjusting a transmission characteristic of the user equipment based on the possibility that the measurement satisfies a limit.
[69]
69. Computer-readable medium according to claim 68, wherein the indication indicates that the specific cell feature is available for the measurement of maximum permissible exposure (MPE).
[70]
70. Computer-readable medium according to claim 68, which further comprises code for: receiving a second indication from a network that the cell-specific resource can be used for measurement.
[71]
71. A computer-readable medium according to claim 68, which further comprises code for: receiving a second indication from a network that the cell-specific resource may not be used for measurement.
[72]
72. Computer-readable medium according to claim 68, which further comprises code for: receiving a limit of interference on thermal noise for the measurement of a base station.
[73]
73. A computer-readable medium according to claim 68, which further comprises code for: receiving a maximum receiving power at which a transmission for measurement can be received at a base station.
[74]
74. A computer-readable medium according to claim 68, which further comprises code for: receiving a programmed period for the measurement of a base station.
[75]
75. Computer-readable medium according to claim 68, which further comprises code for: adjusting the transmission characteristic of the UE when the measurement satisfies the limit.
[76]
76. A computer-readable medium according to claim 75, wherein the transmission characteristic comprises at least one of a transmission power, a transmission direction, an antenna array selection or an antenna module selection, which additionally includes code for: indicating an adjustment of the transmission characteristic for a base station.
[77]
77. A wireless communication method at a base station that comprises: configuring a cell-specific feature on which a user device (UE) can perform a maximum allowable exposure measurement (MPE); and control the use of the cell-specific resource for the measurement of MPE.
[78]
78. The method of claim 77, wherein the cell-specific feature comprises at least one of a Random Access Channel (RACH) feature, a beam failure recovery feature, or a scheduling request feature.
[79]
79. The method of claim 77, wherein controlling the use of the cell-specific resource includes transmitting an indication that an uplink resource can be used for MEP measurement.
[80]
80. The method of claim 77, wherein controlling the use of the cell-specific resource includes transmitting an indication that an uplink resource may not be used for MEP measurement.
[81]
81. Method, according to claim 77, in which the control of the use of the specific resource the cell includes defining a parameter that prevails when an uplink resource can be used for the measurement of MPE.
[82]
82. Method, according to claim 77, in which the control of the use of the specific resource the cell includes transmitting an indication in relation to the use of an uplink resource for the measurement of MPE, in which the indication comprises a parameter in at least one of a Master Information Block (MIB), a System Information Block (SIB), a Media Access Control (CE) Control Element (MAC), Downlink Control (DCI) information, or a Radio Resource Control (RRC) message, in which the indication limits the use of the uplink resource for the measurement of MPE.
[83]
83. Method, according to claim 82, in which the cell-specific resource comprises a Random Access Channel (RACH) resource, the method further comprising: measuring a RACH load, in which the indication limits the use of the RACH feature for measuring MEPs based on RACH loading.
[84]
84. The method of claim 77, which further comprises: setting an interference limit on thermal noise for the measurement of MPE.
[85]
85. The method of claim 77, which further comprises:
configure a maximum receiving power at which a UE transmission for measuring MEP can be received at the base station.
[86]
86. Method, according to claim 77, in which the control of the use of the specific resource the cell includes transmitting a programmed period for the MEP measurement to the UE.
[87]
87. The method of claim 86, wherein the scheduled period for the measurement of MPE is based on a pending uplink data transmission to the UE.
[88]
88. The method of claim 77, which further comprises: grouping a plurality of UEs to perform MEP measurement.
[89]
89. The method of claim 88, wherein the grouping is based on the plurality of UEs that have a different path loss.
[90]
90. The method of claim 77, wherein the cell-specific resource comprises a downlink resource.
[91]
91. Apparatus for wireless communication at a base station, comprising: a memory; and at least one processor coupled to the memory and configured to: configure a specific cell feature in which a user equipment (UE) can perform a maximum allowable exposure measurement (MPE); and control the use of the cell-specific resource for the measurement of MPE.
[92]
92. Apparatus according to claim 91, wherein the cell-specific feature comprises at least one of a Random Access Channel (RACH) feature, a beam failure recovery feature or a scheduling request feature.
[93]
93. Apparatus according to claim 91, in which the control of the use of the specific resource the cell includes transmitting an indication that an uplink resource can be used for the measurement of MPE.
[94]
94. Apparatus according to claim 91, in which the control of the use of the specific resource the cell includes transmitting an indication that an uplink resource may not be used for the measurement of MPE.
[95]
95. Apparatus according to claim 91, in which the control of the use of the specific resource the cell includes defining a parameter that prevails when an uplink resource can be used for the measurement of MPE.
[96]
96. Apparatus, according to claim 91, in which the control of the use of the specific resource the cell includes transmitting an indication in relation to the use of an uplink resource for the measurement of MPE, in which the indication comprises a parameter in at least one of a Master Information Block (MIB), a System Information Block (SIB), a Media Access Control (CE) Control Element (MAC), Downlink Control (DCI) information, or a Radio Resource Control (RRC) message, in which the indication limits the use of the uplink resource for the measurement of MPE.
[97]
97. Apparatus according to claim 96, in which the cell-specific resource comprises a Random Access Channel (RACH) resource, and in which at least one processor is additionally configured to: measure a RACH load, in that the indication limits the use of the RACH feature for measuring MEPs based on RACH loading.
[98]
98. Apparatus according to claim 91, wherein the at least one processor is additionally configured to: configure an interference limit on thermal noise for the measurement of MPE.
[99]
99. Apparatus according to claim 91, wherein the at least one processor is additionally configured to: configure a maximum receiving power at which a UE transmission for measuring MEP can be received at the base station.
[100]
100. Apparatus according to claim 91, in which the control of the use of the specific resource the cell includes transmitting a programmed period for the measurement of MEPs to the UE.
[101]
101. Apparatus according to claim 100, wherein the programmed period for the measurement of MPE is based on a pending uplink data transmission to the UE.
[102]
102. An apparatus according to claim 91, wherein the at least one processor is additionally configured to: group a plurality of UEs to perform the measurement of MPE.
[103]
103. Apparatus according to claim 102, in which the grouping is based on the plurality of UEs that have a different path loss.
[104]
104. Apparatus according to claim 91, wherein the cell-specific resource comprises a downlink resource.
[105]
105. Apparatus for wireless communication at a base station, comprising: means for configuring a cell-specific feature on which a user device (UE) can perform a maximum allowable exposure measurement (MPE); and means to control the use of the cell-specific resource for measuring MEPs.
[106]
106. Apparatus, according to claim 105, in which the cell-specific resource comprises a Random Access Channel (RACH) resource, the apparatus further comprising: means for measuring a RACH load, in which the control of the use of the specific resource the cell limits the use of the RACH resource for measuring MEPs based on RACH loading.
[107]
107. Apparatus according to claim 105, further comprising: means for configuring an interference limit on thermal noise for the measurement of MPE.
[108]
108. Apparatus according to claim 105, further comprising: means for configuring a maximum receiving power at which a UE transmission for measuring MEP can be received at the base station.
[109]
109. An apparatus according to claim 105, which further comprises: means for grouping a plurality of UEs to perform the measurement of MPE.
[110]
110. Computer readable medium that stores computer executable code for wireless communication on a base station that comprises the code to: configure a cell-specific feature on which a user device (UE) can perform a maximum allowable exposure measurement (MPE); and control the use of the cell-specific resource for the measurement of MPE.
[111]
111. Computer-readable medium according to claim 110, in which the cell-specific resource comprises a Random Access Channel (RACH) resource, which further comprises code for: measuring a RACH load, in which the use of the RACH resource for MEP measurement is limited based on RACH loading.
[112]
112. Computer readable medium according to claim 110, which further comprises code for: configuring an interference limit on thermal noise for the measurement of MPE.
[113]
113. A computer-readable medium according to claim 110, which further comprises code for: configuring a maximum receiving power at which a UE transmission for MEP measurement can be received at the base station.
[114]
114. A computer-readable medium according to claim 110, which further comprises code for: grouping a plurality of UEs to perform the measurement of MPE.
100 164 EPC 168 170 160 IP Services Other MBMS GW BM-SC MMEs 199 198
174 162 166 172
Component Port Port Component HSS MME communication metering resource communication PDN server exposure metering exposure 132 132
1/13 120 120 120 104 110 132 120 102 192 132 120 192 184 120 104 120 102 104 104 120 104 180 110 104 134 120 104 120 134 134 104 154 104 120 102 (102 ') 134 104 102 132 152 110 (110 ') 154
110 150 152
One frame (TDD) 230 10 ms 0 1 2 3 4 5 6 0 1 2 3 4 5 6 0 1 2 3 4 5 6 0 1 2 3 4 5 6 subcarrier 0 0 1 2 3 4 5 6 7 8 9 R R 1
DL DL UL DL DL DL DL UL DL DL PCFICH R R 2 3 PDCCH R R 4 PHICH 200 partition R R 5 SSCH RB RB 6
PSCH RR 7 RR 8 PDSCH 9 PBCH RR 10 ePDCCH RR 11 subframe OFDM RS symbol partition 0 partition 1 RB block of width 2/13 SS / PBCH band subframe DL system One frame (TDD) 10 ms 0 1 2 3 4 5 6 0 1 2 3 4 5 6 280 0 1 2 3 4 5 6 0 1 2 3 4 5 6 0 1 2 3 4 5 6 7 8 9 RR 0 sub carrier DL DL UL DL DL DL DL UL DL DL RR 1 RR 2 PUCCH 250 parti RR 3 tion RR 4 PUSCH RB RB RR 5 PRACH RR 6 RR 7 RR 8 RR 9 RR 10 RR 11 DM-RS SRS Comb subframe 0 SC-FDMA symbol SRS RBs of partition width 0 partition 1 SRS Comb 1 UL Subframe System Band
Reference signal 316 318 354 356
TX RX processor TX RX processor RX TX Control / data 358 359 375 374
3/13 Controller / Estimator Controller Estimator /
Channel processor 320 352 channel Processor
376 370 318 354 368 360 Memory Processor TX RX Processor Data / Memory RX RX TX TX Control Reference signal
404a 400
404 402a 404b 402b
402c 404c 402d
4/13 402e
404d 402 402f
402g
402h
-In time (t) EIRP Max. Available + 34dBm
6/13 602 Average power
Promediation time (T) Time (T)
125us ~ 100ms 702 ~ 20ms unused unused 7/13 704 706
RACH SYNC TRAFFIC RACH TRAFFIC SYNC TRAFFIC RACH SYNC 0 1 6 7 13 0 1 6 7 13 Tx Rx Rx Tx 708 708 708 710 708 710 710 Tx Rx 712 Rx Tx 710
800 Receive an indication of a specific cell resource available for measuring
MPE 804 Receiving an interference limit on thermal noise 806 Receiving a maximum receiving power 808 Receiving a second indication from a network 810 Receiving a programmed period for measurement 812 Carrying out a measurement 816 814 Refrain from adjusting an Adjust transmission characteristic 818 Adjusting a transmission characteristic Petition 870200076728, of 19/06/2020, p. 98/107 820 Indicate change to base station
Downlink 904 Communication Receiving Component Power Limit Indication Resource Indication Configuration (or Resource Power Programming Component (or Resources) Measurement Receiving Resources) Available for Maximum Component 920 Component Interference on Available Programming 918 Measurement Second
9/13 thermal noise for MPE measurement / second 912 Limit indication Programming 916 908 Component power programming Measurement indication Component component Adjustment component 910 resource selection measurement Communication Link characteristic Resource measurement (or resources) 914 Resource (or 906 upward adjustment for selected MPE features) available transmission 950 Transmission component Transmission for 951 measurement of MPE
1000 Receiving component 902 '906 914
Transmission component Selection component
908 916 Interference component Thermal noise feature component 910 918 Power component
10/13 Measuring component 1020 maximum receiving 912 920
1010 Adjustment component Programming component
1024 Transceiver Medium readable by computer / memory processor
1004 1006 processing system
Configure a cell-specific feature on which a user device can perform an MPE 1104 measurement Control the use of the cell-specific feature for the MPE 1106 measurement Load measurement 11/13 1108 Configure an interference limit on thermal noise for measurement of
MPE 1110 Set up a maximum receiving power for measuring MPE 1112 Group a plurality of user equipment to perform the measurement of MPE in the system gap link signals Upward grouping component Receiving component Groups of UEs Communication link link signals with loss of ascending path (For example, 1216 disparate ascending (RACH, 1212 RACH)
12/13 Power component measurement MPE component) maximum receiving load measurement 1214 maximum receiving power Load 1210 1208 Component Component Component noise control feature Resource for thermal MPE for MPE Interference limit over Control Feature feature for MPE to MPE 1206 thermal noise
Transmission component 1250
Downlink communication
1202 '1204 1212
Receiving component Load adjustment component
1206 1214 Interference component Transmission component over thermal noise 1208 1216
13/13 1320 MPE Power Component feature component maximum receipt 1210 1218
1310 Control component Grouping component
Transceiver 1324 Readable by computer / memory processor
1304 1306 processing system

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公开号 | 公开日 | 专利标题

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BR112020012548A2|2020-11-24|exposure detection in millimeter wave systems

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US20180269950A1|2018-09-20|Rlm monitoring using signaled dynamic parameter

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EP3508006B1|2020-06-24|Signaling mechanism to enable local operation for multi-antenna wireless communication systems

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US10135596B2|2018-11-20|Narrow band ACK / NACK transmissions

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KR20210028646A|2021-03-12|Methods for mitigation of maximum allowable exposure based on new wireless time domain duplex configuration

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US11057934B2|2021-07-06|Initial access procedure using preconfigured resources

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US20210250982A1|2021-08-12|Adaptive contention window and burst length for receiver based ecca for mmwave band

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US20210153053A1|2021-05-20|Reporting of spatial variations in interference

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US20200396720A1|2020-12-17|System and method for centralized sidelink scheduling

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WO2021212296A1|2021-10-28|Implicit determination of beam failure detection reference signal in a dormant bandwidth part

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US20200389850A1|2020-12-10|System and method for controlling beam type in signal transmission

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US20210243630A1|2021-08-05|Event triggered uplink beam report

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US20210091897A1|2021-03-25|Flexible spectrum usage with carrier aggregation

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WO2021232231A1|2021-11-25|Apparatus and method to induce high-sensitive channel state information reference signal beam switching

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US20210044342A1|2021-02-11|Enhancements to beam failure recovery procedure with multi-transmission reception point operation

同族专利:

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公开号 | 公开日

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US20190200365A1|2019-06-27|

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WO2019126264A1|2019-06-27|

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CN111480301B|2022-02-22|

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KR20200100651A|2020-08-26|

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TW201933895A|2019-08-16|

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EP3729665A1|2020-10-28|

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CN111480301A|2020-07-31|

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JP2021508202A|2021-02-25|

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法律状态:
2021-12-07| B350| Update of information on the portal [chapter 15.35 patent gazette]|

优先权:

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申请号 | 申请日 | 专利标题

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US15/852,743|2017-12-22|

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US15/852,743|US20190200365A1|2017-12-22|2017-12-22|Exposure detection in millimeter wave systems|

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PCT/US2018/066393|WO2019126264A1|2017-12-22|2018-12-19|Exposure detection in millimeter wave systems|

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