EP4268379A1 - Techniques d'atténuation de formation de faisceau dynamique de blocages d'ondes millimétriques - Google Patents

Techniques d'atténuation de formation de faisceau dynamique de blocages d'ondes millimétriques

Info

Publication number
EP4268379A1
EP4268379A1 EP21839742.0A EP21839742A EP4268379A1 EP 4268379 A1 EP4268379 A1 EP 4268379A1 EP 21839742 A EP21839742 A EP 21839742A EP 4268379 A1 EP4268379 A1 EP 4268379A1
Authority
EP
European Patent Office
Prior art keywords
antenna arrays
beam weights
beamforming codebook
reference signal
state information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP21839742.0A
Other languages
German (de)
English (en)
Inventor
Vasanthan Raghavan
Mohammad Ali Tassoudji
Raghu Narayan Challa
Brian Clarke Banister
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qualcomm Inc
Original Assignee
Qualcomm Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US17/457,896 external-priority patent/US11621758B2/en
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of EP4268379A1 publication Critical patent/EP4268379A1/fr
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H04B7/0482—Adaptive codebooks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0868—Hybrid systems, i.e. switching and combining
    • H04B7/088—Hybrid systems, i.e. switching and combining using beam selection

Definitions

  • the UE may switch from a static beamforming codebook-based beam weight determination to a dynamic beamforming codebook-based beam weight determination based on identifying the blockage.
  • the UE may then determine a second set of beam weights to use for the one or more antenna arrays based on the dynamic beamforming codebook-based beam weight determination.
  • the UE may then communicate using the one or more antenna arrays according to the second set of beam weights.
  • FIG. 7 shows a diagram of a system including a device that supports techniques for dynamic beamforming mitigation of mmW blockages in accordance with various aspects of the present disclosure.
  • Each base station 105 may provide communication coverage via one or more cells, for example a macro cell, a small cell, a hot spot, or other types of cells, or any combination thereof.
  • the term “cell” may refer to a logical communication entity used for communication with a base station 105 (e.g., over a carrier) and may be associated with an identifier for distinguishing neighboring cells (e.g., a physical cell identifier (PCID), a virtual cell identifier (VCID), or others).
  • a cell may also refer to a geographic coverage area 110 or a portion of a geographic coverage area 110 (e.g., a sector) over which the logical communication entity operates.
  • a base station 105 may be movable and therefore provide communication coverage for a moving geographic coverage area 110.
  • different geographic coverage areas 110 associated with different technologies may overlap, but the different geographic coverage areas 110 may be supported by the same base station 105.
  • the overlapping geographic coverage areas 110 associated with different technologies may be supported by different base stations 105.
  • the wireless communications system 100 may include, for example, a heterogeneous network in which different types of the base stations 105 provide coverage for various geographic coverage areas 110 using the same or different radio access technologies.
  • the wireless communications system 100 may support synchronous or asynchronous operation.
  • the base stations 105 may have similar frame timings, and transmissions from different base stations 105 may be approximately aligned in time.
  • the base stations 105 may have different frame timings, and transmissions from different base stations 105 may, in some examples, not be aligned in time.
  • the techniques described herein may be used for either synchronous or asynchronous operations.
  • some UEs 115 may be configured for operation using a narrowband protocol type that is associated with a defined portion or range (e.g., set of subcarriers or resource blocks (RBs)) within a carrier, within a guard-band of a carrier, or outside of a carrier.
  • a narrowband protocol type that is associated with a defined portion or range (e.g., set of subcarriers or resource blocks (RBs)) within a carrier, within a guard-band of a carrier, or outside of a carrier.
  • the core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions.
  • the core network 130 may be an evolved packet core (EPC) or 5G core (5GC), which may include at least one control plane entity that manages access and mobility (e.g., a mobility management entity (MME), an access and mobility management function (AMF)) and at least one user plane entity that routes packets or interconnects to external networks (e.g., a serving gateway (S-GW), a Packet Data Network (PDN) gateway (P-GW), or a user plane function (UPF)).
  • EPC evolved packet core
  • 5GC 5G core
  • MME mobility management entity
  • AMF access and mobility management function
  • S-GW serving gateway
  • PDN Packet Data Network gateway
  • UPF user plane function
  • the control plane entity may manage non-access stratum (NAS) functions such as mobility, authentication, and bearer management for the UEs 115 served by the base stations 105 associated with the core network 130.
  • NAS non-access stratum
  • User IP packets may be transferred through the user plane entity, which may provide IP address allocation as well as other functions.
  • the user plane entity may be connected to IP services 150 for one or more network operators.
  • the IP services 150 may include access to the Internet, Intranet(s), an IP Multimedia Subsystem (IMS), or a Packet- Switched Streaming Service.
  • IMS IP Multimedia Subsystem
  • Packet- Switched Streaming Service Packet- Switched Streaming Service
  • Some of the network devices may include subcomponents such as an access network entity 140, which may be an example of an access node controller (ANC).
  • Each access network entity 140 may communicate with the UEs 115 through one or more other access network transmission entities 145, which may be referred to as radio heads, smart radio heads, or transmission/reception points (TRPs).
  • Each access network transmission entity 145 may include one or more antenna panels.
  • various functions of each access network entity 140 or base station 105 may be distributed across various network devices (e.g., radio heads and ANCs) or consolidated into a single network device (e.g., a base station 105).
  • the transmission of UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than 100 kilometers) compared to transmission using the smaller frequencies and longer waves of the high frequency (HF) or very high frequency (VHF) portion of the spectrum below 300 MHz.
  • the wireless communications system 100 may also operate in a super high frequency (SHF) region using radio frequency spectrum bands from 3 GHz to 30 GHz, also known as the centimeter band, or in an extremely high frequency (EHF) region of the spectrum (e.g., from 30 GHz to 300 GHz), also known as the millimeter band.
  • SHF super high frequency
  • EHF extremely high frequency
  • a base station 105 or a UE 115 may be equipped with multiple antennas, which may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming.
  • the antennas of a base station 105 or a UE 115 may be located within one or more antenna arrays or antenna panels, which may support MIMO operations or transmit or receive beamforming.
  • one or more base station antennas or antenna arrays may be co-located at an antenna assembly, such as an antenna tower.
  • antennas or antenna arrays associated with a base station 105 may be located in diverse geographic locations.
  • a base station 105 may have an antenna array with a number of rows and columns of antenna ports that the base station 105 may use to support beamforming of communications with a UE 115.
  • a UE 115 may have one or more antenna arrays that may support various MIMO or beamforming operations.
  • an antenna panel may support radio frequency beamforming for a signal transmitted via an antenna port.
  • the adjustment of signals communicated via the antenna elements may include a transmitting device or a receiving device applying amplitude offsets, phase offsets, or both to signals carried via the antenna elements associated with the device.
  • the adjustments associated with each of the antenna elements may be defined by a beamforming weight set associated with a respective orientation (e.g., with respect to the antenna array of the transmitting device or receiving device, or with respect to some other orientation).
  • a base station 105 or a UE 115 may use beam sweeping techniques as part of beamforming operations. For example, a base station 105 may use multiple antennas or antenna arrays (e.g., antenna panels) to conduct beamforming operations for directional communications with a UE 115.
  • Some signals may be transmitted by a base station 105 multiple times in different directions.
  • the base station 105 may transmit a signal according to different beamforming weight sets associated with different directions of transmission. Transmissions in different beam directions may be used to identify (e.g., by a transmitting device, such as a base station 105, or by a receiving device, such as a UE 115) a beam direction for later transmission or reception by the base station 105.
  • a receiving device may try multiple receive configurations (e.g., directional listening) when receiving various signals from the base station 105, such as synchronization signals, reference signals, beam selection signals, or other control signals.
  • receive configurations e.g., directional listening
  • a receiving device may try multiple receive directions by receiving via different antenna subarrays, by processing received signals according to different antenna subarrays, by receiving according to different receive beamforming weight sets (e.g., different directional listening weight sets) applied to signals received at multiple antenna elements of an antenna array, or by processing received signals according to different receive beamforming weight sets applied to signals received at multiple antenna elements of an antenna array, any of which may be referred to as “listening” according to different receive configurations or receive directions.
  • receive beamforming weight sets e.g., different directional listening weight sets
  • the wireless communications system 100 may be a packet-based network that operates according to a layered protocol stack.
  • communications at the bearer or Packet Data Convergence Protocol (PDCP) layer may be IP -based.
  • a Radio Link Control (RLC) layer may perform packet segmentation and reassembly to communicate over logical channels.
  • RLC Radio Link Control
  • a Medium Access Control (MAC) layer may perform priority handling and multiplexing of logical channels into transport channels.
  • the MAC layer may also use error detection techniques, error correction techniques, or both to support retransmissions at the MAC layer to improve link efficiency.
  • HARQ may include a combination of error detection (e.g., using a cyclic redundancy check (CRC)), forward error correction (FEC), and retransmission (e.g., automatic repeat request (ARQ)).
  • HARQ may improve throughput at the MAC layer in poor radio conditions (e.g., low signal-to-noise conditions).
  • a device may support same-slot HARQ feedback, where the device may provide HARQ feedback in a specific slot for data received in a previous symbol in the slot. In other cases, the device may provide HARQ feedback in a subsequent slot, or according to some other time interval.
  • FIG. 2 illustrates an example of a wireless communications system 200 that supports techniques for dynamic beamforming mitigation of mmW blockages in accordance with various aspects of the present disclosure.
  • UE 215-a and UE 215-b may communicate with each other UE 215 and with base station 230 as described with respect to FIG. 1.
  • UEs 215 may be examples of UEs 115 as described with respect to FIG. 1.
  • Base station 230 may be an example of base station 105 as described with respect to FIG. 1.
  • UE 215-a may include antenna array 210-a, antenna array 210-b, antenna array 210-c, and antenna array 210-d.
  • Each of antenna arrays 210 may transmit and receive communications using beams 205.
  • a beam 205 may operate according to a pair of beam weights, where each beam weight corresponds to the use of a phase-shifter and amplitude control setting that may excited one polarization of a two-layer MIMO polarization-based transmissions procedure.
  • the beams 205 may also be associated with a polarization parameter, an orbital angular momentum parameter, or a spin-based parameter. Each of these parameters may be altered to increase transmit and receive diversity of a set of beams 205.
  • a blockage 220 may interfere with communications to and from UE 215-a, by interfering with transmissions and receptions to and from antenna array 210-a.
  • the blockage 220 may be an example of a user’s hand holding the UE 215-a.
  • UE 215-a may identify that blockage 220 is user’s hand.
  • UE 215-a may sense the presence of blockage 220 using one or more of a FMCW radar, a LIDAR sensor, an accelerometer, a tachometer, a proximity sensor, a gyroscope, a light sensor, a touch sensor, or other sensors.
  • UE 215-a may identify blockage 220.
  • UE 215-a may also measure quality metrics of each of beam 205-a, beam 205-b, and beam 205-c.
  • the quality measurements may include one or more of reference RSRP measurements, reference signal receive quality (RSRQ) measurements, signal to noise ratio (SNR) measurements, signal to interference plus noise ratio (SINR) measurements, and other types of quality measurements.
  • UE 215-a may also measure or record a beam pattern (e.g., beam width beam steering direction, side-lobe levels, and other parameters).
  • UE 215-a may determine that the signal quality of one or more of beam 205-a, beam 205-b, and beam 205-c may satisfy a signal strength threshold (e.g., a low quality threshold) which may indicate that interference is significant, or at an impactful or debilitating level.
  • the signal strength threshold may indicate that beam change or a different antenna component or a different transmission reception point (TRP) may be used. There also may be scenarios where such changes may be precluded.
  • UE 215-a may determine to estimate beam weights rather than perform a beam or antenna array or TRP switch.
  • the beam weight estimation process may include a switch from a static codebook-based beam weight determination procedure to a dynamic codebook-based beam weight determination procedure.
  • a potential set of beam weights may be small (e.g., below a first threshold that may be a function of the number of antenna elements in the antenna array).
  • a potential set of beam weights may be large (e.g., above a second threshold that may be a function of the number of antenna elements in the antenna array).
  • UE 215-a may request a number of aperiodic CSI-RS symbols from the network (e.g., from base station 230 or from UE 215-b).
  • the estimated phase shifter and amplitude control may address interference that may be unique to a hand blockage, and associated signal skewing by the hand.
  • fingers in the hand in blockage 220 may irregularly reflect energy along different directions, which may be mitigated by adjusting phase shifter and amplitude of beams accordingly.
  • the estimation of phase shifter and amplitude settings may tailor the beam 205-a, beam 205-b, and beam 205-c for the case of a hand acting as the blockage 220.
  • the phase changes, phase shifters, and amplitudes may be adjusted dynamically to efficiently mitigate the interference.
  • blockage 220 may be an example of a different type of near-field interference, or an example of far-field interference, such as a building.
  • UE 215-a may similarly use a dynamic codebook process to estimate and update beam weights for other types of near-field and far-field interference.
  • the beam lock operation may be removed, and the antenna module lock may be maintained, with the hand on the UE 215.
  • the UE 215 may perform a beamforming solution to mitigate the interference, and the beam pattern may be measured again based on an updated serving beam. If the beam pattern has a modified beam weight, and the performance loss is mitigated, then a dynamic codebook may be being used by the UE 215.
  • FIG. 3 illustrates an example of a process flow 300 that supports techniques for dynamic beamforming mitigation of mmW blockages in accordance with various aspects of the present disclosure.
  • Process flow 300 may include UE 315, which may be an example of a UE 115 or a UE 215 as described with respect to wireless communications system 100 and wireless communications system 200, respectively.
  • Process flow 300 also includes a base station 305, which may be an example of a base station 105 or a base station 230 as described with respect to wireless communications system 100 and wireless communications system 200, respectively.
  • Base station 305 may also be a second UE 315.
  • UE 315 may operate in a mmW radio frequency spectrum band greater than 24.25 gigahertz.
  • radio frequency spectrum bands such as upper mmW radio frequency spectrum bands, sub-THz radio frequency spectrum bands, SHF radio frequency spectrum bands, or EHF radio frequency spectrum bands, among other examples.
  • UE 315 may identify a blockage corresponding to one or more antenna arrays of a set of antenna arrays, based on using a first set of beam weight corresponding to a static beamforming codebook of the one or more antenna arrays.
  • UE 315 may detect, by one or more sensors, a condition of an environment.
  • UE 315 may identify the blockage based on detecting the condition using the one or more sensors.
  • the one or more sensors may include a radar sensor, a FMCW radar sensor, a LIDAR sensor, an accelerometer, a tachometer, a proximity sensor, a gyroscope, a magnetometer, a light sensor, a touch sensor, or a combination of these.
  • UE 315 may determine that the blockage is a hand or body of a user holding the UE 315. In other cases, UE 315 may determine that the blockage is not a hand or body-induced blockage. For example, if UE 315 is placed on a table, materials of the table may distort electric fields around UE 315. Thus, UE 315 may identify the table as a blockage based on detecting conditions (e.g., distorted electric fields) associated with the table.
  • detecting conditions e.g., distorted electric fields
  • the static beamforming codebook may correspond to a fixed set of phase shifter and amplitude control adaptations that may be based on a fast memory of the UE 315.
  • a quantity of the amplitude control adaptations may satisfy a first threshold level of a size of the one or more antenna arrays.
  • UE 315 may perform a machine learning analysis of one or more conditions in an environment. UE 315 may thus identify the blockage is based on performing the machine learning analysis on an accumulated history of at least one of beam management reports including TCI states and associated RSRPs, UE feedback on CQI, RI, and PMI used at base station 305, base station 305 messages, or HARQ messages, or a combination thereof.
  • beam management reports including TCI states and associated RSRPs, UE feedback on CQI, RI, and PMI used at base station 305, base station 305 messages, or HARQ messages, or a combination thereof.
  • UE 315 may determine that a signal strength associated with the one or more antenna arrays satisfies a signal strength threshold. UE 315 may identify the blockage based on determining that the signal strength satisfies the signal strength threshold. In some cases, UE 315 may transmit a request to receive one or more aperiodic CSI-RS symbols based on the determining.
  • the signal strength threshold may be a RSRP corresponding to the first set of beam weights.
  • UE 315 may switch from a static beamforming codebook-based beam weight determination to a dynamic beamforming codebook-based beam weight determination.
  • UE 315 may measure one or more channel conditions using a set of aperiodic CSI-RS symbols, where determining the second set of beam weights is based on measuring the one or more channel conditions.
  • UE 315 may then select a subset of the set of aperiodic CS-RS symbols based on a dynamic beamforming codebook associated with the dynamic beamforming codebook-based beam weight determination.
  • the beam weights from a dynamic beamforming codebook may correspond to a fixed set of phase shifter and amplitude control adaptations that may be loaded from a slow memory of the UE 315.
  • a quantity of the amplitude control adaptations may satisfy a second threshold level of a size of the one or more antenna arrays.
  • UE 315 may then estimate one or more beam weights corresponding to each aperiodic CSI-RS symbols of the subset, where determining the second set of beam weights is based on the estimated one or more beam weights.
  • UE 315 may estimate the beam weight based on estimating a signal strength of the subset of aperiodic CSI-RS symbols. UE 315 may then determine a set of beam directions based on the estimated signal strength.
  • the beam weight estimation may include UE 315 estimating a phase shift of the one or more beam weights based on the subset of aperiodic CSI-RS symbols, where estimating the one or more beam weights may be based on estimating the phase shift.
  • UE 315 may also estimate an amplitude control adaptation of the one or more beam weights based on the subset of aperiodic CSI-RS symbols, where estimating the one or more beam weights may be based on estimating the amplitude control adaptation.
  • UE 315 may determine a second set of beam weights to use for the one or more antenna arrays based on the dynamic beamforming codebook-based beam weight determination. UE 315 may apply the determined second set of beam weights to the set of antenna arrays based on the dynamic beamforming codebook-based beam weight determination. At 340, UE 315 may communicate using the one or more antenna arrays according to the second set of beam weights.
  • FIG. 4 shows a block diagram 400 of a device 405 that supports techniques for dynamic beamforming mitigation of mmW blockages in accordance with various aspects of the present disclosure.
  • the device 405 may be an example of aspects of a UE 115 as described herein.
  • the device 405 may include a receiver 410, a transmitter 415, and a communications manager 420.
  • the device 405 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses).
  • the receiver 410 may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to techniques for dynamic beamforming mitigation of mmW blockages). Information may be passed on to other components of the device 405.
  • the receiver 410 may utilize a single antenna or multiple antennas.
  • the transmitter 415 may provide a means for transmitting signals generated by other components of the device 405.
  • the transmitter 415 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to techniques for dynamic beamforming mitigation of mmW blockages).
  • the transmitter 415 may be co-located with a receiver 410 in a transceiver component.
  • the transmitter 415 may utilize a single antenna or multiple antennas.
  • the communications manager 420, the receiver 410, the transmitter 415, or various combinations thereof or various components thereof may be examples of means for performing various aspects of techniques for dynamic beamforming mitigation of mmW blockages as described herein.
  • the communications manager 420, the receiver 410, the transmitter 415, or various combinations or components thereof may support a method for performing one or more of the functions described herein.
  • the communications manager 420, the receiver 410, the transmitter 415, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry).
  • the hardware may include a processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting a means for performing the functions described in the present disclosure.
  • a processor and memory coupled with the processor may be configured to perform one or more of the functions described herein (e.g., by executing, by the processor, instructions stored in the memory).
  • the communications manager 420, the receiver 410, the transmitter 415, or various combinations or components thereof may be implemented in code (e.g., as communications management software or firmware) executed by a processor. If implemented in code executed by a processor, the functions of the communications manager 420, the receiver 410, the transmitter 415, or various combinations or components thereof may be performed by a general-purpose processor, a DSP, a central processing unit (CPU), an ASIC, an FPGA, or any combination of these or other programmable logic devices (e.g., configured as or otherwise supporting a means for performing the functions described in the present disclosure).
  • code e.g., as communications management software or firmware
  • the functions of the communications manager 420, the receiver 410, the transmitter 415, or various combinations or components thereof may be performed by a general-purpose processor, a DSP, a central processing unit (CPU), an ASIC, an FPGA, or any combination of these or other programmable logic devices (e.g., configured as or otherwise supporting a means for performing the
  • the communications manager 420 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise in cooperation with the receiver 410, the transmitter 415, or both.
  • the communications manager 420 may receive information from the receiver 410, send information to the transmitter 415, or be integrated in combination with the receiver 410, the transmitter 415, or both to receive information, transmit information, or perform various other operations as described herein.
  • the communications manager 420 may support wireless communications at a UE in accordance with examples as disclosed herein.
  • the communications manager 420 may be configured as or otherwise support a means for identifying a blockage corresponding to one or more antenna arrays of multiple antenna arrays based on using a first set of beam weights corresponding to a static beamforming codebook of the one or more antenna arrays.
  • the communications manager 420 may be configured as or otherwise support a means for switching from a static beamforming codebook-based beam weight determination to a dynamic beamforming codebook-based beam weight determination.
  • the communications manager 420 may be configured as or otherwise support a means for determining a second set of beam weights to use for the one or more antenna arrays based on the dynamic beamforming codebook-based beam weight determination.
  • the communications manager 420 may be configured as or otherwise support a means for communicating using the one or more antenna arrays according to the second set of beam weights.
  • the device 405 may support techniques for adjusting beam weight based on identifying a hand blockage of one or more antenna arrays.
  • the UE 115 may update beam weights may control the transmitter 415 to transmit communications using the updating beam weights, rather than switching beams, which may thereby avoid latency and control channel overhead.
  • FIG. 5 shows a block diagram 500 of a device 505 that supports techniques for dynamic beamforming mitigation of mmW blockages in accordance with various aspects of the present disclosure.
  • the device 505 may be an example of aspects of a device 405 or a UE 115 as described herein.
  • the device 505 may include a receiver 510, a transmitter 515, and a communications manager 520.
  • the device 505 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses).
  • the receiver 510 may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to techniques for dynamic beamforming mitigation of mmW blockages). Information may be passed on to other components of the device 505.
  • the receiver 510 may utilize a single antenna or multiple antennas.
  • the transmitter 515 may provide a means for transmitting signals generated by other components of the device 505.
  • the transmitter 515 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to techniques for dynamic beamforming mitigation of mmW blockages).
  • the transmitter 515 may be co-located with a receiver 510 in a transceiver component.
  • the transmitter 515 may utilize a single antenna or multiple antennas.
  • the communications manager 520 may support wireless communications at a UE in accordance with examples as disclosed herein.
  • the interference identification component 525 may be configured as or otherwise support a means for identifying a blockage corresponding to one or more antenna arrays of multiple antenna arrays based on using a first set of beam weights corresponding to a static beamforming codebook of the one or more antenna arrays.
  • the codebook component 530 may be configured as or otherwise support a means for switching from a static beamforming codebook-based beam weight determination to a dynamic beamforming codebook-based beam weight determination.
  • the beam weight component 535 may be configured as or otherwise support a means for determining a second set of beam weights to use for the one or more antenna arrays based on the dynamic beamforming codebook-based beam weight determination.
  • the communication component 540 may be configured as or otherwise support a means for communicating using the one or more antenna arrays according to the second set of beam weights.
  • FIG. 6 shows a block diagram 600 of a communications manager 620 that supports techniques for dynamic beamforming mitigation of mmW blockages in accordance with various aspects of the present disclosure.
  • the communications manager 620 may be an example of aspects of a communications manager 420, a communications manager 520, or both, as described herein.
  • the communications manager 620, or various components thereof, may be an example of means for performing various aspects of techniques for dynamic beamforming mitigation of mmW blockages as described herein.
  • the communications manager 620 may include an interference identification component 625, a codebook component 630, a beam weight component 635, a communication component 640, a channel measurement component 645, a CSI-RS component 650, an estimation component 655, a beam direction component 660, or any combination thereof.
  • Each of these components may communicate, directly or indirectly, with one another (e.g., via one or more buses).
  • the communications manager 620 may support wireless communications at a UE in accordance with examples as disclosed herein.
  • the interference identification component 625 may be configured as or otherwise support a means for identifying a blockage corresponding to one or more antenna arrays of multiple antenna arrays based on using a first set of beam weights corresponding to a static beamforming codebook of the one or more antenna arrays.
  • the codebook component 630 may be configured as or otherwise support a means for switching from a static beamforming codebook-based beam weight determination to a dynamic beamforming codebook-based beam weight determination.
  • the beam weight component 635 may be configured as or otherwise support a means for determining a second set of beam weights to use for the one or more antenna arrays based on the dynamic beamforming codebook-based beam weight determination.
  • the communication component 640 may be configured as or otherwise support a means for communicating using the one or more antenna arrays according to the second set of beam weights.
  • the channel measurement component 645 may be configured as or otherwise support a means for measuring one or more channel conditions using a set of aperiodic CSI-RS symbols, where determining the second set of beam weights is based on measuring the one or more channel conditions.
  • the set of aperiodic CSI-RS symbols are based on an allocation by a base station.
  • the CSI-RS component 650 may be configured as or otherwise support a means for selecting a subset of the set of aperiodic CSI-RS symbols based on a dynamic beamforming codebook associated with the dynamic beamforming codebook-based beam weight determination.
  • the estimation component 655 may be configured as or otherwise support a means for estimating one or more beam weights corresponding to each aperiodic CSI-RS symbols of the subset, where determining the second set of beam weights is based on the estimated one or more beam weights.
  • the estimation component 655 may be configured as or otherwise support a means for estimating a signal strength of the subset of aperiodic CSI-RS symbols.
  • the beam direction component 660 may be configured as or otherwise support a means for determining a set of beam directions based on the estimated signal strength.
  • the estimation component 655 may be configured as or otherwise support a means for estimating a phase shift of the one or more beam weights based on the subset of aperiodic CSI-RS symbols, where estimating the one or more beam weights is based on estimating the phase shift.
  • the estimation component 655 may be configured as or otherwise support a means for estimating an amplitude control adaptation of the one or more beam weights based on the subset of aperiodic CSI-RS symbols, where estimating the one or more beam weights is based on estimating the amplitude control adaptation.
  • the dynamic beamforming codebook corresponds to a fixed set of phase shifter and amplitude control adaptations that are loaded from a slow memory of the UE. In some examples, a quantity of the amplitude control adaptations satisfy a second threshold level of a size of the one or more antenna arrays.
  • the CSI-RS component 650 may be configured as or otherwise support a means for transmitting a request for a number and location of aperiodic CSI-RS symbols.
  • the CSI-RS component 650 may be configured as or otherwise support a means for receiving the set of aperiodic CSI-RS symbols, where measuring the one or more channel conditions is based on receiving the set of aperiodic CSI-RS symbols.
  • the interference identification component 625 may be configured as or otherwise support a means for detecting, by one or more sensors, a condition of an environment, where identifying the blockage is based on detecting the condition using the one or more sensors.
  • the one or more sensors include a radar sensor, a FMCW radar sensor, a LIDAR sensor, an accelerometer, a tachometer, a proximity sensor, a gyroscope, a magnetometer, a light sensor, a touch sensor, or a combination thereof.
  • the blockage is a hand or body of a user holding the UE.
  • the interference identification component 625 may be configured as or otherwise support a means for performing a machine learning analysis of one or more conditions in an environment, where identifying the blockage is based on performing the machine learning analysis on a accumulated history of at least one of beam management reports including TCI states and associated RSRPs, UE feedback on CQI, RI and PMI used at a base station, base station messages, or HARQ messages, or a combination thereof.
  • the beam weight component 635 may be configured as or otherwise support a means for applying the determined second set of beam weights to the multiple antenna arrays based on the dynamic beamforming codebook-based beam weight determination.
  • the I/O controller 710 may manage input and output signals for the device 705.
  • the I/O controller 710 may also manage peripherals not integrated into the device 705.
  • the I/O controller 710 may represent a physical connection or port to an external peripheral.
  • the I/O controller 710 may utilize an operating system such as iOS®, ANDROID®, MS-DOS®, MS-WINDOWS®, OS/2®, UNIX®, LINUX®, or another known operating system.
  • the I/O controller 710 may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device.
  • the I/O controller 710 may be implemented as part of a processor, such as the processor 740.
  • a user may interact with the device 705 via the I/O controller 710 or via hardware components controlled by the I/O controller 710.
  • FIG. 8 shows a flowchart illustrating a method 800 that supports techniques for dynamic beamforming mitigation of mmW blockages in accordance with various aspects of the present disclosure.
  • the operations of the method 800 may be implemented by a UE or its components as described herein.
  • the operations of the method 800 may be performed by a UE 115 as described with reference to FIGs. 1 through 7.
  • a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.
  • the method may include identifying a blockage corresponding to one or more antenna arrays of multiple antenna arrays based on using a first set of beam weights corresponding to a static beamforming codebook of the one or more antenna arrays.
  • the operations of 805 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 805 may be performed by an interference identification component 625 as described with reference to FIG. 6.
  • the method may include switching from a static beamforming codebook-based beam weight determination to a dynamic beamforming codebook-based beam weight determination.
  • the operations of 810 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 810 may be performed by a codebook component 630 as described with reference to FIG. 6.
  • the method may include determining a second set of beam weights to use for the one or more antenna arrays based on the dynamic beamforming codebook-based beam weight determination.
  • the operations of 815 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 815 may be performed by a beam weight component 635 as described with reference to FIG. 6.
  • the method may include communicating using the one or more antenna arrays according to the second set of beam weights.
  • the operations of 820 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 820 may be performed by a communication component 640 as described with reference to FIG. 6.
  • FIG. 9 shows a flowchart illustrating a method 900 that supports techniques for dynamic beamforming mitigation of mmW blockages in accordance with various aspects of the present disclosure.
  • the operations of the method 900 may be implemented by a UE or its components as described herein.
  • the operations of the method 900 may be performed by a UE 115 as described with reference to FIGs. 1 through 7.
  • a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.
  • the method may include identifying a blockage corresponding to one or more antenna arrays of multiple antenna arrays based on using a first set of beam weights corresponding to a static beamforming codebook of the one or more antenna arrays.
  • the operations of 905 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 905 may be performed by an interference identification component 625 as described with reference to FIG. 6.
  • the method may include switching from a static beamforming codebook-based beam weight determination to a dynamic beamforming codebook-based beam weight determination.
  • the operations of 910 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 910 may be performed by a codebook component 630 as described with reference to FIG. 6.
  • the method may include measuring one or more channel conditions using a set of aperiodic CSI-RS symbols.
  • the operations of 915 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 915 may be performed by a channel measurement component 645 as described with reference to FIG. 6.
  • the method may include determining a second set of beam weights to use for the one or more antenna arrays based on the dynamic beamforming codebook-based beam weight determination and on measuring the one or more channel conditions.
  • the operations of 920 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 920 may be performed by a beam weight component 635 as described with reference to FIG. 6.
  • the method may include communicating using the one or more antenna arrays according to the second set of beam weights.
  • the operations of 925 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 925 may be performed by a communication component 640 as described with reference to FIG. 6.
  • FIG. 10 shows a flowchart illustrating a method 1000 that supports techniques for dynamic beamforming mitigation of mmW blockages in accordance with various aspects of the present disclosure.
  • the operations of the method 1000 may be implemented by a UE or its components as described herein.
  • the operations of the method 1000 may be performed by a UE 115 as described with reference to FIGs. 1 through 7.
  • a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.
  • the method may include identifying a blockage corresponding to one or more antenna arrays of multiple antenna arrays based on using a first set of beam weights corresponding to a static beamforming codebook of the one or more antenna arrays.
  • the operations of 1005 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1005 may be performed by an interference identification component 625 as described with reference to FIG. 6.
  • the method may include transmitting a request for a number and location of aperiodic CSI-RS symbols.
  • the operations of 1015 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1015 may be performed by a CSI-RS component 650 as described with reference to FIG. 6.
  • the method may include receiving the set of aperiodic CSI-RS symbols.
  • the operations of 1020 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1020 may be performed by a CSI-RS component 650 as described with reference to FIG. 6.
  • the method may include measuring one or more channel conditions based on receiving the set of aperiodic CSI-RS symbols. The operations of 1025 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1025 may be performed by a channel measurement component 645 as described with reference to FIG. 6.
  • the method may include determining a second set of beam weights to use for the one or more antenna arrays based on the dynamic beamforming codebook-based beam weight determination and on measuring the one or more channel conditions.
  • the operations of 1030 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1030 may be performed by a beam weight component 635 as described with reference to FIG. 6.
  • a method for wireless communications at a UE comprising: identifying a blockage corresponding to one or more antenna arrays of a plurality of antenna arrays based at least in part on using a first set of beam weights corresponding to a static beamforming codebook of the one or more antenna arrays; switching from a static beamforming codebook-based beam weight determination to a dynamic beamforming codebook-based beam weight determination; determining a second set of beam weights to use for the one or more antenna arrays based at least in part on the dynamic beamforming codebook-based beam weight determination; communicating using the one or more antenna arrays according to the second set of beam weights.
  • Aspect 2 The method of aspect 1, further comprising: measuring one or more channel conditions using a set of aperiodic channel state information reference signal symbols, wherein determining the second set of beam weights is based at least in part on measuring the one or more channel conditions.
  • Aspect 3 The method of aspect 2, further comprising: selecting a subset of the set of aperiodic channel state information reference signal symbols based at least in part on a dynamic beamforming codebook associated with the dynamic beamforming codebook-based beam weight determination; and estimating one or more beam weights corresponding to each aperiodic channel state information reference signal symbols of the subset, wherein determining the second set of beam weights is based at least in part on the estimated one or more beam weights.
  • Aspect 4 The method of aspect 3, wherein estimating the one or more beam weights comprises: estimating a signal strength of the subset of aperiodic channel state information reference signal symbols; and determining a set of beam directions based at least in part on the estimated signal strength.
  • Aspect 5 The method of any of aspects 3 through 4, further comprising: estimating a phase shift of the one or more beam weights based at least in part on the subset of aperiodic channel state information reference signal symbols, wherein estimating the one or more beam weights is based at least in part on estimating the phase shift.
  • Aspect 6 The method of any of aspects 3 through 5, further comprising: estimating an amplitude control adaptation of the one or more beam weights based at least in part on the subset of aperiodic channel state information reference signal symbols, wherein estimating the one or more beam weights is based at least in part on estimating the amplitude control adaptation.
  • Aspect 7 The method of any of aspects 3 through 6, wherein: the dynamic beamforming codebook corresponds to a fixed set of phase shifter and amplitude control adaptations that are loaded from a slow memory of the UE; and a quantity of the amplitude control adaptations satisfy a second threshold level of a size of the one or more antenna arrays.
  • Aspect 8 The method of any of aspects 2 through 7, wherein the set of aperiodic channel state information reference signal symbols are based at least in part on an allocation by a base station.
  • Aspect 9 The method of any of aspects 2 through 8, further comprising: transmitting a request for a number and location of aperiodic channel state information reference signal symbols; and receiving the set of aperiodic channel state information reference signal symbols, wherein measuring the one or more channel conditions is based at least in part on receiving the set of aperiodic channel state information reference signal symbols.
  • Aspect 10 The method of any of aspects 1 through 9, further comprising: detecting, by one or more sensors, a condition of an environment, wherein identifying the blockage is based at least in part on detecting the condition using the one or more sensors.
  • Aspect 11 The method of aspect 10, wherein the one or more sensors include a radar sensor, a frequency modulated continuous wave (FMCW) radar sensor, a light detection and ranging (LIDAR) sensor, an accelerometer, a tachometer, a proximity sensor, a gyroscope, a magnetometer, a light sensor, a touch sensor, or a combination thereof.
  • FMCW frequency modulated continuous wave
  • LIDAR light detection and ranging
  • Aspect 12 The method of aspect 11, wherein the blockage is a hand of a user or body holding the UE.
  • Aspect 13 The method of any of aspects 1 through 12, further comprising: performing a machine learning analysis of one or more conditions in an environment, wherein identifying the blockage is based at least in part on performing the machine learning analysis by accumulating a history of at least one of beam management reports including transmission configuration indicator (TCI) states and associated reference signal received powers (RSRPs), UE feedback on channel quality indicator (CQI), rank indicator (RI) and precoding matrix indicator (PMI) used at a base station, base station messages, or hybrid automatic repeat request (HARQ) messages, or a combination thereof.
  • TCI transmission configuration indicator
  • RSRPs reference signal received powers
  • CQI channel quality indicator
  • RI rank indicator
  • PMI precoding matrix indicator
  • HARQ hybrid automatic repeat request
  • Aspect 14 The method of any of aspects 1 through 13, further comprising: applying the determined second set of beam weights to the plurality of antenna arrays based at least in part on the dynamic beamforming codebook-based beam weight determination.
  • Aspect 15 The method of any of aspects 1 through 14, further comprising: determining that a signal strength associated with the one or more antenna arrays satisfies a signal strength threshold, wherein identifying the blockage is based at least in part on determining that the signal strength satisfies the signal strength threshold; and transmitting a request to receive one or more aperiodic channel state information reference signal symbols based at least in part on the determining.
  • Aspect 16 The method of aspect 15, wherein the signal strength threshold includes a reference signal received power (RSRP) corresponding to the first set of beam weights.
  • RSRP reference signal received power
  • Aspect 17 The method of any of aspects 1 through 16, wherein: the static beamforming codebook corresponds to a fixed set of phase shifter and amplitude control adaptations that are based at least in part on a fast memory of the UE; and a quantity of the amplitude control adaptations satisfy a first threshold level of a size of the one or more antenna arrays.
  • Aspect 18 The method of any of aspects 1 through 17, wherein the UE operates in a millimeter wave radio frequency spectrum band greater than 24.25 gigahertz.
  • Aspect 19 An apparatus for wireless communications at a UE, comprising a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method of any of aspects 1 through 18.
  • Aspect 20 An apparatus for wireless communications at a UE, comprising at least one means for performing a method of any of aspects 1 through 18.

Abstract

Des procédés, des systèmes, et des dispositifs, destinés aux communications sans fil, sont décrits. Un équipement utilisateur (UE) peut communiquer avec d'autres dispositifs de réseau dans le cadre d'un système de communication sans fil. L'UE peut identifier un blocage correspondant à un ou plusieurs réseaux d'antennes d'un ensemble de réseaux d'antennes sur la base de l'utilisation d'un premier ensemble de poids de faisceau, qui peut correspondre à un livre de codes de formation de faisceau statique du ou des réseaux d'antennes. L'UE peut commuter d'une détermination de poids de faisceau basée sur un livre de codes de formation de faisceau statique à une détermination de poids de faisceau basée sur un livre de codes de formation de faisceau dynamique. L'UE peut ensuite déterminer un second ensemble de poids de faisceau à utiliser pour le ou les réseaux d'antennes sur la base de la détermination de poids de faisceau basée sur un livre de codes de formation de faisceau dynamique. L'UE peut ensuite communiquer au moyen du ou des réseaux d'antennes selon le second ensemble de poids de faisceau.
EP21839742.0A 2020-12-23 2021-12-07 Techniques d'atténuation de formation de faisceau dynamique de blocages d'ondes millimétriques Pending EP4268379A1 (fr)

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US202063130227P 2020-12-23 2020-12-23
US17/457,896 US11621758B2 (en) 2020-12-23 2021-12-06 Techniques for dynamic beamforming mitigation of millimeter wave blockages
PCT/US2021/062259 WO2022140056A1 (fr) 2020-12-23 2021-12-07 Techniques d'atténuation de formation de faisceau dynamique de blocages d'ondes millimétriques

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US9872296B2 (en) * 2015-01-06 2018-01-16 Qualcomm Incorporated Techniques for beam shaping at a millimeter wave base station and a wireless device and fast antenna subarray selection at a wireless device
US10951291B2 (en) * 2016-09-28 2021-03-16 Idac Holdings, Inc. Systems and methods for beam management
US10979917B2 (en) * 2017-09-16 2021-04-13 Qualcomm Incorporated Systems and methods for communication beam loss recovery
US10735066B2 (en) * 2017-12-22 2020-08-04 Samsung Electronics Co., Ltd. Methods of beam codebook generation for the 5G terminals
US11374635B2 (en) * 2018-06-22 2022-06-28 Samsung Electronics Co., Ltd. Method and apparatus for sensor assisted beam selection, beam tracking, and antenna module selection

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