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EP4602750A1 - Étalonnage de port de transmission - Google Patents

Étalonnage de port de transmission

Info

Publication number
EP4602750A1
EP4602750A1 EP22961768.3A EP22961768A EP4602750A1 EP 4602750 A1 EP4602750 A1 EP 4602750A1 EP 22961768 A EP22961768 A EP 22961768A EP 4602750 A1 EP4602750 A1 EP 4602750A1
Authority
EP
European Patent Office
Prior art keywords
network node
phase
communication
calibration
srs
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
EP22961768.3A
Other languages
German (de)
English (en)
Inventor
Kexin XIAO
Yi Huang
Yu Zhang
Peter Gaal
Wanshi Chen
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
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of EP4602750A1 publication Critical patent/EP4602750A1/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
    • H04B7/0404—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas the mobile station comprising multiple antennas, e.g. to provide uplink diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/11—Monitoring; Testing of transmitters for calibration
    • H04B17/12—Monitoring; Testing of transmitters for calibration of transmit antennas, e.g. of the amplitude or phase
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0092—Indication of how the channel is divided

Definitions

  • a wireless network may include one or more network nodes that support communication for wireless communication devices, such as a user equipment (UE) or multiple UEs.
  • a UE may communicate with a network node via downlink communications and uplink communications.
  • Downlink (or “DL” ) refers to a communication link from the network node to the UE
  • uplink (or “UL” ) refers to a communication link from the UE to the network node.
  • Some wireless networks may support device-to-device communication, such as via a local link (e.g., a sidelink (SL) , a wireless local area network (WLAN) link, and/or a wireless personal area network (WPAN) link, among other examples) .
  • SL sidelink
  • WLAN wireless local area network
  • WPAN wireless personal area network
  • the apparatus may include means for transmitting, to a network node, phase calibration information indicative of a phase error calibration vector corresponding to a phase difference associated with a plurality of transmission ports at the network node.
  • the apparatus may include means for receiving a communication based on the phase calibration information.
  • Fig. 5 is a diagram illustrating an example associated with codebook-based physical uplink shared channel (PUSCH) communications, in accordance with the present disclosure.
  • PUSCH physical uplink shared channel
  • Fig. 6 is a flow diagram illustrating an example of codebook-based uplink communication, in accordance with the present disclosure.
  • aspects and examples generally include a method, apparatus, network node, system, computer program product, non-transitory computer-readable medium, user equipment, base station, wireless communication device, and/or processing system as described or substantially described herein with reference to and as illustrated by the drawings and specification.
  • aspects are described in the present disclosure by illustration to some examples, such aspects may be implemented in many different arrangements and scenarios.
  • Techniques described herein may be implemented using different platform types, devices, systems, shapes, sizes, and/or packaging arrangements.
  • some aspects may be implemented via integrated chip embodiments or other non-module-component-based devices (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail/purchasing devices, medical devices, and/or artificial intelligence devices) .
  • Aspects may be implemented in chip-level components, modular components, non-modular components, non-chip-level components, device-level components, and/or system-level components.
  • Devices incorporating described aspects and features may include additional components and features for implementation and practice of claimed and described aspects.
  • transmission and reception of wireless signals may include one or more components for analog and digital purposes (e.g., hardware components including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders, and/or summers) .
  • RF radio frequency
  • Aspects described herein may be practiced in a wide variety of devices, components, systems, distributed arrangements, and/or end-user devices of varying size, shape, and constitution.
  • NR New Radio
  • RAT radio access technology
  • Fig. 1 is a diagram illustrating an example of a wireless network 100, in accordance with the present disclosure.
  • the wireless network 100 may be or may include elements of a 5G (e.g., NR) network and/or a 4G (e.g., Long Term Evolution (LTE) ) network, among other examples.
  • 5G e.g., NR
  • 4G e.g., Long Term Evolution (LTE) network
  • the wireless network 100 may include one or more network nodes 110 (shown as a network node 110a, a network node 110b, a network node 110c, and a network node 110d) , a user equipment (UE) 120 or multiple UEs 120 (shown as a UE 120a, a UE 120b, a UE 120c, a UE 120d, and a UE 120e) , and/or other entities.
  • a network node 110 is a network node that communicates with UEs 120. As shown, a network node 110 may include one or more network nodes.
  • a network node 110 may be an aggregated network node, meaning that the aggregated network node is configured to utilize a radio protocol stack that is physically or logically integrated within a single radio access network (RAN) node (e.g., within a single device or unit) .
  • RAN radio access network
  • a network node 110 may be a disaggregated network node (sometimes referred to as a disaggregated base station) , meaning that the network node 110 is configured to utilize a protocol stack that is physically or logically distributed among two or more nodes (such as one or more central units (CUs) , one or more distributed units (DUs) , or one or more radio units (RUs) ) .
  • CUs central units
  • DUs distributed units
  • RUs radio units
  • a network node 110 is or includes a network node that communicates with UEs 120 via a radio access link, such as an RU. In some examples, a network node 110 is or includes a network node that communicates with other network nodes 110 via a fronthaul link or a midhaul link, such as a DU. In some examples, a network node 110 is or includes a network node that communicates with other network nodes 110 via a midhaul link or a core network via a backhaul link, such as a CU.
  • a network node 110 may include multiple network nodes, such as one or more RUs, one or more CUs, and/or one or more DUs.
  • the network nodes 110 may be interconnected to one another or to one or more other network nodes 110 in the wireless network 100 through various types of fronthaul, midhaul, and/or backhaul interfaces, such as a direct physical connection, an air interface, or a virtual network, using any suitable transport network.
  • a network node 110 may provide communication coverage for a particular geographic area.
  • the term “cell” can refer to a coverage area of a network node 110 and/or a network node subsystem serving this coverage area, depending on the context in which the term is used.
  • a network node 110 may provide communication coverage for a macro cell, a pico cell, a femto cell, and/or another type of cell.
  • a macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs 120 with service subscriptions.
  • a pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs 120 with service subscriptions.
  • a femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by UEs 120 having association with the femto cell (e.g., UEs 120 in a closed subscriber group (CSG) ) .
  • a network node 110 for a macro cell may be referred to as a macro network node.
  • a network node 110 for a pico cell may be referred to as a pico network node.
  • a network node 110 for a femto cell may be referred to as a femto network node or an in-home network node. In the example shown in Fig.
  • the network node 110a may be a macro network node for a macro cell 102a
  • the network node 110b may be a pico network node for a pico cell 102b
  • the network node 110c may be a femto network node for a femto cell 102c.
  • a network node may support one or multiple (e.g., three) cells.
  • a cell may not necessarily be stationary, and the geographic area of the cell may move according to the location of a network node 110 that is mobile (e.g., a mobile network node) .
  • base station or “network node” may refer to an aggregated base station, a disaggregated base station, an integrated access and backhaul (IAB) node, a relay node, or one or more components thereof.
  • base station or “network node” may refer to a CU, a DU, an RU, a Near-Real Time (Near-RT) RAN Intelligent Controller (RIC) , or a Non-Real Time (Non-RT) RIC, or a combination thereof.
  • the term “base station” or “network node” may refer to one device configured to perform one or more functions, such as those described herein in connection with the network node 110.
  • the term “base station” or “network node” may refer to a plurality of devices configured to perform the one or more functions. For example, in some distributed systems, each of a quantity of different devices (which may be located in the same geographic location or in different geographic locations) may be configured to perform at least a portion of a function, or to duplicate performance of at least a portion of the function, and the term “base station” or “network node” may refer to any one or more of those different devices.
  • the term “base station” or “network node” may refer to one or more virtual base stations or one or more virtual base station functions. For example, in some aspects, two or more base station functions may be instantiated on a single device.
  • the term “base station” or “network node” may refer to one of the base station functions and not another. In this way, a single device may include more than one base station.
  • the wireless network 100 may include one or more relay stations.
  • a relay station is a network node that can receive a transmission of data from an upstream node (e.g., a network node 110 or a UE 120) and send a transmission of the data to a downstream node (e.g., a UE 120 or a network node 110) .
  • a relay station may be a UE 120 that can relay transmissions for other UEs 120.
  • the network node 110d e.g., a relay network node
  • the network node 110a may communicate with the network node 110a (e.g., a macro network node) and the UE 120d in order to facilitate communication between the network node 110a and the UE 120d.
  • a network node 110 that relays communications may be referred to as a relay station, a relay base station, a relay network node, a relay node, a relay, or the like.
  • the wireless network 100 may be a heterogeneous network that includes network nodes 110 of different types, such as macro network nodes, pico network nodes, femto network nodes, relay network nodes, or the like. These different types of network nodes 110 may have different transmit power levels, different coverage areas, and/or different impacts on interference in the wireless network 100. For example, macro network nodes may have a high transmit power level (e.g., 5 to 40 watts) whereas pico network nodes, femto network nodes, and relay network nodes may have lower transmit power levels (e.g., 0.1 to 2 watts) .
  • macro network nodes may have a high transmit power level (e.g., 5 to 40 watts)
  • pico network nodes, femto network nodes, and relay network nodes may have lower transmit power levels (e.g., 0.1 to 2 watts) .
  • a network controller 130 may couple to or communicate with a set of network nodes 110 and may provide coordination and control for these network nodes 110.
  • the network controller 130 may communicate with the network nodes 110 via a backhaul communication link or a midhaul communication link.
  • the network nodes 110 may communicate with one another directly or indirectly via a wireless or wireline backhaul communication link.
  • the network controller 130 may be a CU or a core network device, or may include a CU or a core network device.
  • the UEs 120 may be dispersed throughout the wireless network 100, and each UE 120 may be stationary or mobile.
  • a UE 120 may include, for example, an access terminal, a terminal, a mobile station, and/or a subscriber unit.
  • a UE 120 may be a cellular phone (e.g., a smart phone) , a personal digital assistant (PDA) , a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device, a biometric device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring or a smart bracelet) ) , an entertainment device (e.g., a music device, a video device, and/or a satellite radio)
  • Some UEs 120 may be considered machine-type communication (MTC) or evolved or enhanced machine-type communication (eMTC) UEs.
  • An MTC UE and/or an eMTC UE may include, for example, a robot, a drone, a remote device, a sensor, a meter, a monitor, and/or a location tag, that may communicate with a network node, another device (e.g., a remote device) , or some other entity.
  • Some UEs 120 may be considered Internet-of-Things (IoT) devices, and/or may be implemented as NB-IoT (narrowband IoT) devices.
  • Some UEs 120 may be considered a Customer Premises Equipment.
  • a UE 120 may be included inside a housing that houses components of the UE 120, such as processor components and/or memory components.
  • the processor components and the memory components may be coupled together.
  • the processor components e.g., one or more processors
  • the memory components e.g., a memory
  • the processor components and the memory components may be operatively coupled, communicatively coupled, electronically coupled, and/or electrically coupled.
  • any number of wireless networks 100 may be deployed in a given geographic area.
  • Each wireless network 100 may support a particular RAT and may operate on one or more frequencies.
  • a RAT may be referred to as a radio technology, an air interface, or the like.
  • a frequency may be referred to as a carrier, a frequency channel, or the like.
  • Each frequency may support a single RAT in a given geographic area in order to avoid interference between wireless networks of different RATs.
  • NR or 5G RAT networks may be deployed.
  • two or more UEs 120 may communicate directly using one or more sidelink channels (e.g., without using a network node 110 as an intermediary to communicate with one another) .
  • the UEs 120 may communicate using peer-to-peer (P2P) communications, device-to-device (D2D) communications, a vehicle-to-everything (V2X) protocol (e.g., which may include a vehicle-to-vehicle (V2V) protocol, a vehicle-to-infrastructure (V2I) protocol, or a vehicle-to-pedestrian (V2P) protocol) , and/or a mesh network.
  • V2X vehicle-to-everything
  • a UE 120 may perform scheduling operations, resource selection operations, and/or other operations described elsewhere herein as being performed by the network node 110.
  • Devices of the wireless network 100 may communicate using the electromagnetic spectrum, which may be subdivided by frequency or wavelength into various classes, bands, channels, or the like. For example, devices of the wireless network 100 may communicate using one or more operating bands.
  • devices of the wireless network 100 may communicate using one or more operating bands.
  • two initial operating bands have been identified as frequency range designations FR1 (410 MHz –7.125 GHz) and FR2 (24.25 GHz –52.6 GHz) . It should be understood that although a portion of FR1 is greater than 6 GHz, FR1 is often referred to (interchangeably) as a “Sub-6 GHz” band in various documents and articles.
  • FR2 which is often referred to (interchangeably) as a “millimeter wave” band in documents and articles, despite being different from the extremely high frequency (EHF) band (30 GHz –300 GHz) which is identified by the International Telecommunications Union (ITU) as a “millimeter wave” band.
  • EHF extremely high frequency
  • ITU International Telecommunications Union
  • FR4a or FR4-1 52.6 GHz –71 GHz
  • FR4 52.6 GHz –114.25 GHz
  • FR5 114.25 GHz –300 GHz
  • sub-6 GHz may broadly represent frequencies that may be less than 6 GHz, may be within FR1, or may include mid-band frequencies.
  • millimeter wave may broadly represent frequencies that may include mid-band frequencies, may be within FR2, FR4, FR4-a or FR4-1, and/or FR5, or may be within the EHF band.
  • Fig. 2 is a diagram illustrating an example 200 of a network node 110 in communication with a UE 120 in a wireless network 100, in accordance with the present disclosure.
  • the network node 110 may be equipped with a set of antennas 234a through 234t, such as T antennas (T ⁇ 1) .
  • the UE 120 may be equipped with a set of antennas 252a through 252r, such as R antennas (R ⁇ 1) .
  • the network node 110 of example 200 includes one or more radio frequency components, such as antennas 234 and a modem 254.
  • a network node 110 may include an interface, a communication component, or another component that facilitates communication with the UE 120 or another network node.
  • Some network nodes 110 may not include radio frequency components that facilitate direct communication with the UE 120, such as one or more CUs, or one or more DUs.
  • a transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on the data symbols, the control symbols, the overhead symbols, and/or the reference symbols, if applicable, and may provide a set of output symbol streams (e.g., T output symbol streams) to a corresponding set of modems 232 (e.g., T modems) , shown as modems 232a through 232t.
  • each output symbol stream may be provided to a modulator component (shown as MOD) of a modem 232.
  • Each modem 232 may use a respective modulator component to process a respective output symbol stream (e.g., for OFDM) to obtain an output sample stream.
  • Each modem 232 may further use a respective modulator component to process (e.g., convert to analog, amplify, filter, and/or upconvert) the output sample stream to obtain a downlink signal.
  • the modems 232a through 232t may transmit a set of downlink signals (e.g., T downlink signals) via a corresponding set of antennas 234 (e.g., T antennas) , shown as antennas 234a through 234t.
  • One or more antennas may include, or may be included within, one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, and/or one or more antenna arrays, among other examples.
  • An antenna panel, an antenna group, a set of antenna elements, and/or an antenna array may include one or more antenna elements (within a single housing or multiple housings) , a set of coplanar antenna elements, a set of non-coplanar antenna elements, and/or one or more antenna elements coupled to one or more transmission and/or reception components, such as one or more components of Fig. 2.
  • Each of the antenna elements may include one or more sub-elements for radiating or receiving radio frequency signals.
  • a single antenna element may include a first sub-element cross-polarized with a second sub-element that can be used to independently transmit cross-polarized signals.
  • the antenna elements may include patch antennas, dipole antennas, or other types of antennas arranged in a linear pattern, a two-dimensional pattern, or another pattern.
  • a spacing between antenna elements may be such that signals with a desired wavelength transmitted separately by the antenna elements may interact or interfere (e.g., to form a desired beam) . For example, given an expected range of wavelengths or frequencies, the spacing may provide a quarter wavelength, half wavelength, or other fraction of a wavelength of spacing between neighboring antenna elements to allow for interaction or interference of signals transmitted by the separate antenna elements within that expected range.
  • Beam may refer to a directional transmission such as a wireless signal that is transmitted in a direction of a receiving device.
  • a beam may include a directional signal, a direction associated with a signal, a set of directional resources associated with a signal (e.g., angle of arrival, horizontal direction, vertical direction) , and/or a set of parameters that indicate one or more aspects of a directional signal, a direction associated with a signal, and/or a set of directional resources associated with a signal.
  • antenna elements and/or sub-elements may be used to generate beams.
  • antenna elements may be individually selected or deselected for transmission of a signal (or signals) by controlling an amplitude of one or more corresponding amplifiers.
  • Beamforming includes generation of a beam using multiple signals on different antenna elements, where one or more, or all, of the multiple signals are shifted in phase relative to each other.
  • the formed beam may carry physical or higher layer reference signals or information. As each signal of the multiple signals is radiated from a respective antenna element, the radiated signals interact, interfere (constructive and destructive interference) , and amplify each other to form a resulting beam.
  • the shape (such as the amplitude, width, and/or presence of side lobes) and the direction (such as an angle of the beam relative to a surface of an antenna array) can be dynamically controlled by modifying the phase shifts or phase offsets of the multiple signals relative to each other.
  • the TCI state may indicate a quasi-co-location (QCL) type.
  • QCL type may indicate one or more spatial parameters to be derived from the source signal.
  • the source signal may be referred to as a QCL source.
  • the network node may indicate an activated TCI state to the UE, which the UE may use to select a beam for receiving the PDSCH.
  • a beam indication may be, or include, a TCI state information element, a beam identifier (ID) , spatial relation information, a TCI state ID, a closed loop index, a panel ID, a TRP ID, and/or a sounding reference signal (SRS) set ID, among other examples.
  • a TCI state information element (referred to as a TCI state herein) may indicate information associated with a beam such as a downlink beam.
  • the TCI state information element may indicate a TCI state identification (e.g., a tci-StateID) , a QCL type (e.g., a qcl-Type1, qcl-Type2, qcl-TypeA, qcl-TypeB, qcl-TypeC, qcl-TypeD, and/or the like) , a cell identification (e.g., a ServCellIndex) , a bandwidth part identification (bwp-Id) , a reference signal identification such as a CSI-RS (e.g., an NZP-CSI-RS-ResourceId, an SSB-Index, and/or the like) , and/or the like.
  • Spatial relation information may similarly indicate information associated with an uplink beam.
  • Beam indications may be provided for carrier aggregation (CA) scenarios.
  • CA carrier aggregation
  • the network may support common TCI state ID update and activation to provide common QCL and/or common UL transmission spatial filter or filters across a set of configured component carriers (CCs) .
  • This type of beam indication may apply to intra-band CA, as well as to joint DL/UL and separate DL/UL beam indications.
  • the common TCI state ID may imply that one reference signal (RS) determined according to the TCI state (s) indicated by a common TCI state ID is used to provide QCL Type-D indication and to determine UL transmission spatial filters across the set of configured CCs.
  • RS reference signal
  • a transmit processor 264 may receive and process data from a data source 262 and control information (e.g., for reports that include RSRP, RSSI, RSRQ, and/or CQI) from the controller/processor 280.
  • the transmit processor 264 may generate reference symbols for one or more reference signals.
  • the symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266 if applicable, further processed by the modems 254 (e.g., for DFT-s-OFDM or CP-OFDM) , and transmitted to the network node 110.
  • the modem 254 of the UE 120 may include a modulator and a demodulator.
  • the UE 120 includes a transceiver.
  • the transceiver may include any combination of the antenna (s) 252, the modem (s) 254, the MIMO detector 256, the receive processor 258, the transmit processor 264, and/or the TX MIMO processor 266.
  • the transceiver may be used by a processor (e.g., the controller/processor 280) and the memory 282 to perform aspects of any of the methods described herein (e.g., with reference to Figs. 6-9) .
  • the uplink signals from UE 120 and/or other UEs may be received by the antennas 234, processed by the modem 232 (e.g., a demodulator component, shown as DEMOD, of the modem 232) , detected by a MIMO detector 236 if applicable, and further processed by a receive processor 238 to obtain decoded data and control information sent by the UE 120.
  • the receive processor 238 may provide the decoded data to a data sink 239 and provide the decoded control information to the controller/processor 240.
  • the network node 110 may include a communication unit 244 and may communicate with the network controller 130 via the communication unit 244.
  • a multi-antenna UE 120 and/or a set of antenna ports of the UE 120 may be classified into one of three groups depending on coherence of the antenna ports of the UE 120.
  • a set of antenna ports e.g., two antenna ports
  • PUSCH physical uplink shared channel
  • CDD may be applied to these two virtual ports (e.g., by transmitting communications from the virtual ports using CDD) , thereby forming a single virtual port from the partially-coherent ports (e.g., using precoding and CDD) .
  • the UE 120 uses precoding to transmit on a single port (e.g., port 0) of two configured ports (port 0 and port 1) , the transmission power of the transmission on the single port (port 0) is scaled by a factor of 1/2 (one half) .
  • a network node 110 may configure a UE 120 with one or more SRS resource sets to allocate resources for SRS transmissions by the UE 120.
  • a configuration for SRS resource sets may be indicated in an RRC message (e.g., an RRC configuration message, an RRC reconfiguration message, and/or the like) .
  • an SRS resource set may include one or more resources (e.g., shown as SRS resources) , which may include time resources and/or frequency resources (e.g., a slot, a symbol, a resource block, a periodicity for the time resources, and/or the like) .
  • an SRS resource may include one or more antenna ports on which an SRS is to be transmitted (e.g., in a time-frequency resource) .
  • a configuration for an SRS resource set may indicate one or more time-frequency resources in which an SRS is to be transmitted, and may indicate one or more antenna ports on which the SRS is to be transmitted in those time-frequency resources.
  • the configuration for an SRS resource set may indicate a use case (e.g., in an SRS-SetUse information element) for the SRS resource set.
  • an SRS resource set may have a use case of antenna switching, codebook, non-codebook, beam management, and/or the like.
  • a second SRS resource set (e.g., shown as SRS Resource Set 2) may be a codebook use case.
  • this example codebook SRS resource set includes only the first SRS resource (shown as SRS Resource A) .
  • codebook SRS may be transmitted in SRS Resource A (e.g., the first time-frequency resource) using antenna port 0 and antenna port 1.
  • the UE 120 may not transmit code book SRS in SRS Resource B (e.g., the second time-frequency resource) using antenna port 2 and antenna port 3.
  • the second network node can indicate, to the first network node, an SRS resource for a PUSCH transmission by indicating the SRS resource in an SRS resource indicator (SRI) field in a downlink communication (e.g., a DCI communication with a format 0_1, which can be an uplink scheduling DCI) that schedules the PUSCH transmission.
  • SRI SRS resource indicator
  • the first network node can use the same spatial domain transmission filter for the PUSCH transmission as the indicated SRS resource, and can use the quantity of SRS ports of the indicated SRS resource as the quantity of antenna ports for the PUSCH transmission.
  • the downlink communication can further indicate a TPMI and a quantity of layers for the PUSCH transmission.
  • the DCI communication can include a Precoding Information and Number of Layers field that indicates the TPMI and the quantity of layers.
  • the Precoding Information and Number of Layers field can include a codepoint (e.g., a plurality of bits indicating or representing a particular value) that identifies an index associated with a row or column in a table or another type of data structure.
  • the row or column can indicate the quantity of layers and the TPMI that are associated with the index.
  • the Codebooksubset field can indicate that the antenna ports are fullyAndPartialAndNonCoherent, or partialAndNonCoherent, or noncoherent.
  • all TPMI indices that can be indicated by the second network node can be used for fullyAndPartialAndNonCoherent antenna ports, a subset of the TPMI indices can be used for partialAndNonCoherent antenna ports, and another subset of the TPMI indices can be used for noncoherent antenna ports.
  • the Maxrank field can indicate a maximum quantity of layers for the PUSCH transmission.
  • the TransformPrecoder field can indicate whether DFT-s-OFDM or CP-OFDM is enabled based at least in part on whether the TransformPrecoder field is enabled.
  • a second network node can configure a first network node to transmit a plurality of repetitions of the same PUSCH transmission (e.g., a plurality of repetitions of the same PUSCH transport block) , where each repetition can be directed to a TRP among a plurality of TRPs in a multi-TRP configuration, an antenna panel among a plurality of antenna panels in a multi-panel configuration, or an antenna among a plurality of antennas in a multi-antenna configuration.
  • a plurality of repetitions of the same PUSCH transmission e.g., a plurality of repetitions of the same PUSCH transport block
  • each repetition can be directed to a TRP among a plurality of TRPs in a multi-TRP configuration, an antenna panel among a plurality of antenna panels in a multi-panel configuration, or an antenna among a plurality of antennas in a multi-antenna configuration.
  • Fig. 4 is provided as an example. Other examples may differ from what is described with regard to Fig. 4.
  • Fig. 5 is a diagram illustrating an example 500 associated with codebook-based PUSCH communications, in accordance with the present disclosure.
  • a first network node 502 and a second network node 504 may communicate with one another.
  • the first network node 502 may be a UE and the second network node 504 may be a base station.
  • the first network node 502 and/or the second network node 504 may be, be similar to, include, or be included in, the UE 120 and/or the network node 110 depicted in Figs. 1 and 2, and/or one or more components of the disaggregated base station architecture 300 depicted in Fig. 3.
  • the one or more codepoints can be included in a precodingAndNumberOfLayers field in the RRC communication, and the SRI codepoint can be included in an srs-Resourceindicator field in the RRC communication.
  • the second network node 504 can schedule or configure PUSCH transmissions for the first network node 502 using dynamic scheduling.
  • the second network node 504 can transmit DCI communications (e.g., format 0_1 DCI communications) to the first network node 502 to schedule or configure resources for PUSCH transmissions.
  • DCI communications e.g., format 0_1 DCI communications
  • the one or more codepoints can be included in a Precoding Information and Number of Layers field or another field that is used to indicate TPMI indices and a quantity of layers for the PUSCH transmission, and/or the SRI codepoint can be included in an SRI field.
  • a candidate discrete Fourier transform (DFT) -based coherent precoder 514 for 8 Tx uplink communications can indicate one or more TPMI indices.
  • the precoder 514 can indicate a codepoint and an associated rank indicator (RI) and/or TPMI size.
  • a DCI communication may include the precoder 514.
  • the precoder 514 can include a first column of indicating the RI and/or TPMI size (RI/TPMI size) .
  • the RI/TPMI size may correspond to an associated codepoint value indicated in a Precoding Information and Number of Layers field.
  • the precoder 514 can include a mapping that can indicate the quantity of layers, the quantity of TPMI indices, and the TPMI indices for an index value (codepoint value) .
  • the mapping in each row can specify an order of the TPMI indices indicated in the row.
  • each combination of TPMI indices can be included in the table a plurality of times such that different orders of the same combination of TPMI indices are included.
  • the 8 Tx coherent precoder can be based on a DFT matrix. In this way, one example of an 8 Tx precoder can be similar to a downlink type-I 8 Tx codebook, which is based on a DFT codebook with oversampling factor and a co-phasing factor
  • phase error ⁇ ⁇ U [- ⁇ , ⁇ ] results in 13.2%throughput loss at the cell edge, 16%throughput loss in the cell center, and 13.2%average throughput loss.
  • phase error calibration without phase error calibration, degradation of uplink throughput in codebook based PUSCH communications can occur.
  • the second network node 504 may indicate a configuration of SRS resources for uplink phase error calibration.
  • the first network node 502 may transmit SRSs on a plurality of uplink transmission ports (e.g., on all uplink transmission ports) .
  • the second network node 504 may estimate the phase difference among the Tx ports of the first network node 502 and may generate a phase error calibration vector based on the estimated phase difference.
  • the estimation may be performed using any number of different phase estimation techniques including, for example, application of a least squares estimator, machine learning models, and/or any other number of techniques.
  • the second network node 504 may transmit, to the first network node 502, phase calibration information indicative of a phase error calibration vector corresponding to a phase difference associated with a plurality of transmission ports at the first network node 502.
  • the first network node 502 may use the calibration vector to adjust transmission phase of one or more of the transmission ports, and may transmit a communication to the second network node 504 using the adjusted phase.
  • the first network node 502 may transmit a PUSCH communication based on the phase calibration information.
  • the first network node 502 may transmit an SRS used for codebook-based PUSCH.
  • the second network node 504 may transmit, based on the SRS, an uplink resource grant for PUSCH communications.
  • Fig. 5 is provided as an example. Other examples may differ from what is described with regard to Fig. 5.
  • Fig. 6 is a flow diagram illustrating an example 600 of codebook-based uplink communication, in accordance with the present disclosure.
  • a first network node 602 and a second network node 604 may communicate with one another.
  • the first network node 602 and/or the second network node 604 may be, be similar to, include, or be included in, the first network node 502 and the second network node 504, respectively, depicted in Fig. 5, the UE 120 depicted in Figs. 1-3, the network node 110 depicted in Figs. 1 and 2, and/or one or more components of the disaggregated base station architecture 300 depicted in Fig. 3.
  • the second network node 604 may transmit, and the first network node 602 may receive, phase calibration information.
  • the phase calibration information may be transmitted using a medium access control control element (MAC CE) via a PDSCH.
  • MAC CE medium access control control element
  • the phase calibration information may be transmitted using a plurality of periodic communications.
  • a first periodic communication of the plurality of periodic communications may include first phase calibration information of the phase calibration information and a second periodic communication of the plurality of periodic communications may include second phase calibration information of the phase calibration information.
  • the phase calibration information may be transmitted using an aperiodic communication.
  • the second network node 604 may transmit, and the first network node 602 may receive, the phase calibration information based on a change in an estimated phase error satisfying a phase error change threshold.
  • the phase error calibration information may be indicative of the phase error calibration vector.
  • the phase error calibration vector may include a plurality of elements, each of the plurality of elements corresponding to a respective transmission port of the plurality of transmission ports. In some aspects, each element may be quantized into a quantity of bits.
  • the first network node 602 may obtain the quantity of bits based on at least one of an indication communication or information stored in a memory of the first network node (e.g., information specified by a wireless communication standard) .
  • the first network node 602 may transmit, and the second network node 604 may receive, a communication.
  • the communication may be based on the phase calibration information.
  • the communication may include a PUSCH communication.
  • the communication may include an SRS.
  • the SRS may be based on the phase error calibration vector and may correspond to a codebook-based PUSCH operation.
  • the SRS may be used by the second network node 604 to determine a TPMI and RI for a PUSCH communication.
  • the second network node 604 may transmit, and the first network node 602 may receive, an uplink resource grant for transmitting the PUSCH communication, where the uplink resource grant indicates at least one of a TPMI or an RI. Based on the uplink grant, the first network node 602 may transmit, and the second network node 604 may receive, a PUSCH communication based on the phase error calibration vector.
  • Fig. 6 is provided as an example. Other examples may differ from what is described with regard to Fig. 6.
  • Fig. 7 is a diagram illustrating an example process 700 performed, for example, by a first network node, in accordance with the present disclosure.
  • Example process 700 is an example where a first network node (e.g., the first network node 602) performs operations associated with transmission port calibration.
  • the communication comprises a PUSCH communication.
  • process 700 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in Fig. 7. Additionally, or alternatively, two or more of the blocks of process 700 may be performed in parallel.
  • Fig. 8 is a diagram illustrating an example process 800 performed, for example, by a second network node, in accordance with the present disclosure.
  • Example process 800 is an example where a second network node (e.g., the second network node 604) performs operations associated with transmission port calibration.
  • process 800 may include transmitting, to a first network node, phase calibration information indicative of a phase error calibration vector corresponding to a phase difference associated with a plurality of transmission ports at the first network node (block 810) .
  • the second network node e.g., using communication manager 908 and/or transmission component 904, depicted in Fig. 9 may transmit, to the first network node, phase calibration information indicative of a phase error calibration vector corresponding to a phase difference associated with a plurality of transmission ports at the first network node, as described above.
  • process 800 includes transmitting, to the first network node, calibration configuration information indicative of a set of SRS resources for phase error calibration, and receiving, based on the calibration configuration information, at least one SRS corresponding to a respective transmission port of the plurality of transmission ports.
  • the set of SRS resources comprises at least one of periodic SRS resources or semi-persistent SRS resources.
  • the set of SRS resources corresponds to a bandwidth part.
  • the set of SRS resources comprises dedicated resources for transmission phase estimation.
  • a parameter associated with the report configuration is based on at least one of a minimum phase value, a maximum phase value, a fixed quantity of bits, or a one-bit quantization for a sign of a transmission phase.
  • the parameter comprises at least one of a range or a granularity.
  • transmitting the phase calibration information comprises transmitting a first phase calibration report indicative of the phase error calibration vector, and transmitting a second phase calibration report indicative of a set of differential values associated with the phase error calibration vector and an additional phase error calibration vector.
  • process 800 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in Fig. 8. Additionally, or alternatively, two or more of the blocks of process 800 may be performed in parallel.
  • Fig. 9 is a diagram of an example apparatus 900 for wireless communication, in accordance with the present disclosure.
  • the apparatus 900 may be a network node, or a network node may include the apparatus 900.
  • the apparatus 900 includes a reception component 902 and a transmission component 904, which may be in communication with one another (for example, via one or more buses and/or one or more other components) .
  • the apparatus 900 may communicate with another apparatus 906 (such as a UE, a base station, another network node, or another wireless communication device) using the reception component 902 and the transmission component 904.
  • the apparatus 900 may include a communication manager 908.
  • the reception component 902 may receive communications, such as reference signals, control information, data communications, or a combination thereof, from the apparatus 906.
  • the reception component 902 may provide received communications to one or more other components of the apparatus 900.
  • the reception component 902 may perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, de-mapping, equalization, interference cancellation, or decoding, among other examples) , and may provide the processed signals to the one or more other components of the apparatus 900.
  • the transmission component 904 may transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the apparatus 906.
  • one or more other components of the apparatus 900 may generate communications and may provide the generated communications to the transmission component 904 for transmission to the apparatus 906.
  • the transmission component 904 may perform signal processing on the generated communications (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, among other examples) , and may transmit the processed signals to the apparatus 906.
  • means for transmitting, outputting, or sending may include one or more antennas, a modulator, a transmit MIMO processor, a transmit processor, or a combination thereof, of the UE and/or the network node described above in connection with Fig. 2.
  • a device may have an interface to output signals and/or data for transmission (a means for outputting) .
  • a processor may output signals and/or data, via a bus interface, to an RF front end for transmission.
  • a device may have an interface to obtain the signals and/or data received from another device (ameans for obtaining) .
  • a processor may obtain (or receive) the signals and/or data, via a bus interface, from an RF front end for reception.
  • an RF front end may include various components, including transmit and receive processors, transmit and receive MIMO processors, modulators, demodulators, and the like, such as depicted in the examples in Fig. 2.
  • the reception component 902 may receive, from a second network node, phase calibration information indicative of a phase error calibration vector corresponding to a phase difference associated with a plurality of transmission ports at the first network node.
  • the communication manager 908 and/or the transmission component 904 may transmit a communication based on the phase calibration information.
  • the communication manager 908 may include one or more antennas, a modem, a controller/processor, a memory, or a combination thereof, of the UE and/or the network node described in connection with Fig. 2.
  • the communication manager 908 may include the reception component 902 and/or the transmission component 904.
  • the communication manager 908 may be, be similar to, include, or be included in, the communication manager 140 and/or 150 depicted in Figs. 1 and 2.
  • the communication manager 908 and/or the reception component 902 may receive, from the second network node, calibration configuration information indicative of a set of SRS resources for phase error calibration.
  • the communication manager 908 and/or the transmission component 904 may transmit, based on the calibration configuration information, a plurality of SRSs, each SRSs of the plurality of SRSs corresponding to a respective transmission port of the plurality of transmission ports.
  • the communication manager 908 and/or the transmission component 904 may transmit a PUSCH communication based on the phase error calibration vector.
  • the communication manager 908 and/or the reception component 902 may receive an uplink resource grant for transmitting the PUSCH communication, wherein the uplink resource grant indicates at least one of a transmitted precoding matrix indicator or a rank indicator.
  • the communication manager 908 and/or the transmission component 904 may transmit, to a first network node, phase calibration information indicative of a phase error calibration vector corresponding to a phase difference associated with a plurality of transmission ports at the first network node.
  • the communication manager 908 and/or the reception component 902 may receive a communication based on the phase calibration information.
  • the communication manager 908 and/or the transmission component 904 may transmit, to the first network node, calibration configuration information indicative of a set of SRS resources for phase error calibration.
  • the communication manager 908 and/or the reception component 902 may receive, based on the calibration configuration information, at least one SRS corresponding to a respective transmission port of the plurality of transmission ports.
  • the communication manager 908 and/or the reception component 902 may receive a PUSCH communication based on the phase error calibration vector.
  • the communication manager 908 and/or the transmission component 904 may transmit an uplink resource grant for transmitting the PUSCH communication, wherein the uplink resource grant indicates at least one of a transmitted precoding matrix indicator or a rank indicator.
  • Aspect 13 The method of any of Aspects 1-12, wherein receiving the phase calibration information comprises receiving a plurality of periodic communications, wherein a first periodic communication of the plurality of periodic communications includes first phase calibration information of the phase calibration information and a second periodic communication of the plurality of periodic communications includes second phase calibration information of the phase calibration information.
  • a method of wireless communication performed by an apparatus at a second network node comprising: transmitting, to a first network node, phase calibration information indicative of a phase error calibration vector corresponding to a phase difference associated with a plurality of transmission ports at the first network node; and receiving a communication based on the phase calibration information.
  • Aspect 25 The method of Aspect 24, wherein the set of SRS resources comprises at least one of periodic SRS resources or semi-persistent SRS resources.
  • Aspect 27 The method of any of Aspects 24-26, wherein the set of SRS resources comprises dedicated resources for transmission phase estimation.
  • Aspect 34 The method of any of Aspects 23-33, wherein transmitting the phase calibration information comprises transmitting a medium access control control element (MAC CE) via a physical downlink shared channel.
  • MAC CE medium access control control element
  • Aspect 36 The method of any of Aspects 23-34, wherein transmitting the phase calibration information comprises transmitting an aperiodic communication.
  • Aspect 38 The method of any of Aspects 23-37, wherein the phase error calibration vector includes a plurality of elements, each of the plurality of elements corresponding to a respective transmission port of the plurality of transmission ports.
  • Aspect 45 An apparatus for wireless communication at a device, 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 the method of one or more of Aspects 1-22.
  • Aspect 48 A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method of one or more of Aspects 1-22.
  • Aspect 50 An apparatus for wireless communication at a device, 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 the method of one or more of Aspects 23-44.
  • Aspect 51 A device for wireless communication, comprising a memory and one or more processors coupled to the memory, the one or more processors configured to perform the method of one or more of Aspects 23-44.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

Divers aspects de la présente divulgation portent généralement sur la communication sans fil. Selon certains aspects, un premier nœud de réseau peut recevoir, en provenance d'un second nœud de réseau, des informations d'étalonnage de phase indiquant un vecteur d'étalonnage d'erreur de phase correspondant à une différence de phase associée à une pluralité de ports de transmission au niveau du premier nœud de réseau. Le premier nœud de réseau peut transmettre une communication sur la base des informations d'étalonnage de phase. De nombreux autres aspects sont décrits.
EP22961768.3A 2022-10-14 2022-10-14 Étalonnage de port de transmission Pending EP4602750A1 (fr)

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CN110192354B (zh) * 2017-01-09 2022-04-29 瑞典爱立信有限公司 混合srs组合信令
US11296766B2 (en) * 2017-06-14 2022-04-05 Lg Electronics Inc. Method for reporting channel state information in wireless communication system and device therefor
CN111095839B (zh) * 2017-09-12 2022-06-10 联发科技股份有限公司 无线通信中多trp与多面板传输的方法及装置
US10707939B2 (en) * 2017-10-03 2020-07-07 Mediatek Inc. Codebook-based uplink transmission in wireless communications
WO2021117010A1 (fr) * 2019-12-13 2021-06-17 Telefonaktiebolaget Lm Ericsson (Publ) Étalonnage d'antenne assisté pour systèmes radio partagés
US11888560B2 (en) * 2020-08-27 2024-01-30 Qualcomm Incorporated Transmit gain adjustments in ultra-wide bandwidth beamforming wireless communication systems

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