WO2020092985A1 - Commande de puissance de liaison montante (ul) d'équipement d'utilisateur (ue) de nouvelle radio (nr) - Google Patents

Commande de puissance de liaison montante (ul) d'équipement d'utilisateur (ue) de nouvelle radio (nr) Download PDF

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Publication number
WO2020092985A1
WO2020092985A1 PCT/US2019/059508 US2019059508W WO2020092985A1 WO 2020092985 A1 WO2020092985 A1 WO 2020092985A1 US 2019059508 W US2019059508 W US 2019059508W WO 2020092985 A1 WO2020092985 A1 WO 2020092985A1
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WO
WIPO (PCT)
Prior art keywords
power control
loop power
open
control parameters
parameters set
Prior art date
Application number
PCT/US2019/059508
Other languages
English (en)
Inventor
Debdeep CHATTERJEE
Sergey PANTELEEV
Fatemeh HAMIDI-SEPEHR
Toufiqul Islam
Original Assignee
Intel Corporation
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 Intel Corporation filed Critical Intel Corporation
Priority to CN202410310912.2A priority Critical patent/CN118201055A/zh
Priority to CN201980036427.8A priority patent/CN112913288A/zh
Priority to EP19877912.6A priority patent/EP3874837A4/fr
Publication of WO2020092985A1 publication Critical patent/WO2020092985A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/247—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters where the output power of a terminal is based on a path parameter sent by another terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/10—Open loop power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/146—Uplink power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/26—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service]
    • H04W52/262—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service] taking into account adaptive modulation and coding [AMC] scheme
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/362—Aspects of the step size
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/345—Interference values

Definitions

  • Various embodiments generally relate to the field of cellular communications, and particularly to uplink (UL) power control in a New Radio (NR) network.
  • UL uplink
  • NR New Radio
  • FIG. 1 illustrates a process according to some embodiments
  • FIG. 2 illustrates an example architecture of a system of a network, in accordance with various embodiments.
  • Fig. 3 illustrates example components of baseband circuitry and radio front end modules (RFEM) in accordance with various embodiments.
  • NR systems will support coexistence of diverse services and traffic communication in a common carrier. As different services have different requirements and characteristics, multiplexing techniques need to be studied so that transmission of packets of each service type is minimally impacted. In particular, transmission of one service type needs to be made with higher end-to-end reliability than other coexisting transmissions of difference services.
  • One way to protect the reliability of a critical transmission when overlap with other transmissions and/or unfavorable channel conditions are unavoidable is to boost the uplink (UL) transmit power.
  • UL power control enhancements may help achieve better coexistence of different service types and target reliability of critical communications such as ultra-reliable low latency communications URLLC.
  • Disclosed embodiments address different UL power control enhancements for UL data channels.
  • DCI downlink control information
  • SRS sounding reference signal
  • SRI resource indicator
  • closed loop transmit power control adjustment indicator in a field of the DCI
  • the UE In the open loop power control, there is no feedback either from the UE to a Node B/base station, such as to a NR evolved Node B (gNodeB).
  • a Node B/base station such as to a NR evolved Node B (gNodeB).
  • the UE In an open loop power control scenario, the UE typically estimates the power strength for an uplink transmission based on a signal received from the Node B. Based on this estimate, the mobile unit adjusts the transmit power accordingly.
  • the Node B receives an UL signal from the UE, and, based on a determined power level of the signal, as well as other parameters such as signal to noise ratio (SNR) and bit error rate (BER), the Node B determines what is the optimum power level for UL transmission by the UE to achieve effective communication link performance.
  • This estimated power level may be communicated to the UE by the Node B over a control channel.
  • the UE then adjusts the power level accordingly using the feedback provided by the Node B for UL transmissions.
  • the UE may also estimate the Node B's power level and communicate to the
  • Node B to adjust its power level to achieve effective reverse link performance.
  • SRI is a configurable field in DCI and not all UEs may have SRI field configured in the DCI or UL scheduling grant. Hence, for those UEs, other solutions are needed to indicate power control parameters.
  • radio network temporary identifier (RNTI)-based indication of one or more open loop power control parameters and/or path loss estimates and/or closed-loop power control process, either via a configured RNTI UE-specific DCI or via group- common DCI; or
  • Disclosed embodiments complement existing approaches so that UL power control adjustments can be made in a flexible manner for different UE configurations.
  • Power control (PC) for UL data transmission physical uplink shared channel may be given by equation (1): 10. log 10 (2 m M KB ) + A TF + ⁇ 5(/) ⁇ Eq. (l) where P PU SCH iS the data channel transmit power, and P c, Max denotes maximum allowed transmit power to ensure that this maximum allowed transmit power in a carrier is not exceeded.
  • PL(q) corresponds to network configurable open loop power control adjustment, where P Q (j ) can be simplified to be the target received power, a(j) accounts for fractional path loss compensation, and PL(q ) is an estimate of the
  • j refers to one pair of ⁇ P 0 , a ⁇ , and there can be multiple open loop parameter pairs configured for a UE.
  • different open loop parameter pairs can be used for different types of PUSCH transmissions, e.g., transmission with configured grant, scheduled transmission, random access message 3 (Msg. 3) transmission etc.
  • q refers to selection of path loss estimate for UL transmission for a certain beamforming channel.
  • the network may configure the device (UE) with a set of downlink reference signals, e.g., channel state information (CSI) reference signal (RS) (CSI-RS) or synchronization signal (SS) Block as references for path loss estimation, and each such reference signal may be associated with a value of q.
  • CSI channel state information
  • RS reference signal
  • SS synchronization signal
  • RBs assigned
  • D tr accounts for the modulation and coding scheme (MCS) used for PUSCH transmission
  • ⁇ 5(Z) refers to closed loop power adjustment transmit power control (TPC) command, where l points to one of multiple closed loop power control processes of the UE.
  • a UE may have two independent closed-loop processes.
  • the network configures and/or indicates
  • the pair ⁇ P 0 , a ⁇ , q, and l are indicated in an UL scheduling grant via a mapping to a field in the DCI, where the field is originally used to indicate UL sounding reference signal resource (SRI : SRS resource indicator).
  • SRI UL sounding reference signal resource
  • closed loop power control adjustment ⁇ 5(Z) can be indicated in a field in a DCI.
  • the value of l is either indicated via a separate bit-field such as in DCI format 2_2, or via mapping to an SRI field, in DCI format 0_1, as indicated above.
  • the SRI field in an UL scheduling grant is configurable, meaning that not all UEs may receive that field in the DCI, depending on whether they are configured or not.
  • transmission of multiple services and application may coexist in a carrier and in certain scenarios.
  • dynamic adjustment of power control parameters are desirable to ensure appropriate transmit power is used at devices, regardless of whether UE is configured to monitor SRI field in a DCI or not.
  • URLLC transmission may coexist with enhanced mobile broadband (eMBB) transmissions in a carrier, and if there is a chance one transmission may overlap with other, transmit power may be adjusted at one or more terminals in order to ensure interference is controlled and/or requirements are met for each service.
  • eMBB enhanced mobile broadband
  • PUSCH transmissions may be scheduled with higher transmit power but shorter durations to achieve similar target reliability with lower latency.
  • Disclosed embodiments are directed to solutions to more flexibly indicate one or more of the power control parameters listed above.
  • DCI refers to either UL scheduling grant in a PDCCH or group common DCI in a PDCCH.
  • Each of these PDCCHs may have one or more UE specific fields where one or more of the above power control parameters can be indicated.
  • a pair of open loop PC parameters ⁇ P Q , a ⁇ may be explicitly indicated in a field in a DCI.
  • a UE may be configured with M >1 pairs, and a field in DCI may indicate one of the pairs.
  • the M pairs may be configured to a UE by higher layer signaling, such as radio resource control (RRC) signaling.
  • RRC radio resource control
  • a path loss estimate process i.e., q may be explicitly indicated in a field in DCI.
  • a UE can be configured with N> 1 values of q, each indicating path loss estimate for a specific beamforming channel, i.e., beam pair.
  • the value of q may also point to certain downlink reference signals to be assumed for path loss estimate calculation.
  • One of multiple values of q configured for a UE can be indicated in the field.
  • a set of values of q with corresponding mapping to a beam and/or DL reference signal may be configured to a UE by higher layer signaling, such as RRC.
  • a value of closed loop process indicator / may be indicated in a field in DCI.
  • a UE may be configured with P 3 1 closed loop power control process, and each may have a certain range of power control step adjustment ⁇ 5, e.g., ⁇ -1, 0, 1, 3 ⁇ dB which can be indicated in the same field or in a different field in the DCI.
  • P may be configured to the UE by higher layers including RRC.
  • a second closed loop power control process may be defined with step-sizes different from those for the first process.
  • the step adjustment values can be different from ⁇ -1, 0, 1, 3 ⁇ dB, and specified to cover a larger dynamic range, or be defined with one or more offsets that may be added to the existing step-down and step-up values respectively, while still including the 0 dB step-size.
  • the second closed loop power control process may be configured as a non-accumulative process while the first process is indicated as an accumulative process, or vice-versa.
  • non-accumulative process what is meant is a scenario where an indicated d or adjustment value is not added to the previous value of d for a given process, but rather applied as an absolute value just for the
  • indicated/scheduled transmissions By accumulative process, what is meant is a scenario where an indicated d or adjustment value is added to the previous value of d for a given process.
  • one or more of the parameters pair ⁇ P 0 , a ⁇ , q, and l are indicated by RRC and the rest is indicated explicitly in one or more fields in a DCI.
  • a UE may be configured with a table with Q>1
  • Each configuration points to a set of one or more of parameter pairs ⁇ P 0 , a ⁇ , along with q, and 1.
  • One configuration index may be explicitly indicated in a DCI field. If one or more parameters are not indicated via a configuration index, those parameters can be configured by higher layers or indicated in DCI in a separate field.
  • a certain range of MCS may be associated with one or more of pairs ⁇ P 0 , a ⁇ , along with q, and 1. According to this embodiment, if the MCS indicated is above a certain index, one or more of the parameters pair ⁇ P 0 , a ⁇ , q, and l may be implicitly obtained.
  • one or more of the parameter pairs ⁇ P 0 , a ⁇ , along with q, and l, can be implicitly associated with one or more of the following fields in the DCI:
  • the UE may be configured by higher layers to use a second set of power control parameters when the scheduled PUSCH duration is shorter than or equal to a specified or higher layer configured threshold, e.g., 2 or 4 symbols - as another example, the threshold, in number of symbols, may be defined on per subcarrier basis;
  • a specified or higher layer configured threshold e.g., 2 or 4 symbols - as another example, the threshold, in number of symbols, may be defined on per subcarrier basis;
  • an alternative embodiment may include associating one or more of the parameter set, pair ⁇ P Q , a ⁇ , along with q, and l, with the RNTI used for transmission of the DCI, where the RNTI can be UE-specific or group-specific and configured by higher layer signaling. For example, if RNTI A is used, the UE may assume one set of parameters, whereas if RNTI B is used UE may assume another set of PC
  • the parameters that are not associated with RNTI may be configured by a higher layers and/or implicitly (such as by mapping to another field) or explicitly indicated in the DCI in one or more fields.
  • pair ⁇ P 0 , a ⁇ may be configured by higher layers, q may be indicated in a field in DCI, and closed-loop power control process I may be obtained based on RNTI used for transmission.
  • pair ⁇ P 0 , a ⁇ is higher layer configured
  • q can be indicated in a field in DCI or follow semi-static configuration
  • closed-loop power control process I can be obtained based on RNTI used for transmission.
  • an existing RNTI such as MCS-C-RNTI may be additionally used to indicate one or more of the configurable power control parameters.
  • the configured range for step size d may not be adequate, such as in instances where transmission of one service type overlaps with another service type with different requirements.
  • PUSCH transmit power may be adjusted by applying an offset to the step adjustment indicated in the DCI, such as set forth in equation (2) below:
  • offset may, according to an embodiment, be indicated by the network, either by higher layer signaling or dynamically in DCI either implicitly or explicitly, to adjust power.
  • One or more other configurable PC parameters ⁇ P 0 , a ⁇ , q, and l may, according to an embodiment, be indicated by higher layer and/or one or more fields in DCI, explicitly or implicitly.
  • the absolute step size used in the equation above may not exceed 4dB. If this is not sufficient in some cases, the network may leverage using the offset to bring the step size to a desired value.
  • a UE may be configured to monitor a group-common DCI with a certain configured RNTI, where one or more bits may indicate one or more of offset, closed loop power control process l and step size ⁇ 5(Z).
  • a RNTI of a UE-specific DCI such as UL grant or group common DCI in PDCCH may implicitly indicate an offset to be used with the TPC command ⁇ 5(Z) indicated in other field in the DCI.
  • the value of offset can be higher layer configured.
  • the offset can be UE specific and common for all the closed loop PC process, or specific to each PC loop process. In another example, offset can be common in a carrier.
  • Fig. 1 illustrates a process 100 according to embodiment.
  • Process 100 includes, at operation 102, decoding a downlink control information (DCI) from a NR evolved Node B (gNodeB), the DCI including an indication regarding a selection of one of a first open-loop power control parameters set and a second open-loop power control parameters set, the indication corresponding to an UL transmission by the UE, wherein each of the first open-loop power control parameters set and the second open loop power control parameters set comprises a respective ⁇ P 0 , a ⁇ , wherein P 0 corresponds to a target received power at the gNodeB for the UL transmission, and a corresponds to fractional path loss compensation for the UL transmission; at operation 104, selecting, based on the indication, one of the first open-loop power control parameters set and the second open-loop power control parameters set; and at operation 106, encoding the UL transmission for transmission to the gNodeB, wherein a transmit power of the DCI
  • Fig. 2 illustrates an example architecture of a system 200 of a network, in accordance with various embodiments.
  • the following description is provided for an example system 200 that operates in conjunction with the LTE system standards and 5G or NR system standards as provided by 3GPP technical specifications.
  • the example embodiments are not limited in this regard and the described embodiments may apply to other networks that benefit from the principles described herein, such as future 3GPP systems (e.g., Sixth
  • the system 200 includes UE 201a and UE 201b (collectively referred to as “UEs 201" or “UE 201").
  • UEs 201 are illustrated as
  • smartphones may also comprise any mobile or non-mobile computing device.
  • the UEs 201 may be configured to connect, for example, communicatively couple, with an or RAN 210.
  • the RAN 210 may be an NG RAN or a 5G RAN, an E- UTRAN, or a legacy RAN, such as a UTRAN or GERAN.
  • NG RAN or the like may refer to a RAN 210 that operates in an NR or 5G system 200
  • E- UTRAN or the like may refer to a RAN 210 that operates in an LTE or 4G system 200.
  • the UEs 201 utilize connections (or channels) 203 and 204, respectively, each of which comprises a physical communications interface or layer (discussed in further detail below).
  • the connections 203 and 204 are illustrated as an air interface to enable communicative coupling, and can be consistent with cellular communications protocols, such as a GSM protocol, a CDMA network protocol, a PTT protocol, a POC protocol, a UMTS protocol, a 3GPP LTE protocol, a 5G protocol, a NR protocol, and/or any of the other communications protocols discussed herein.
  • the UEs 201 may directly exchange communication data via a ProSe interface 205.
  • the ProSe interface 205 may alternatively be referred to as a SL interface 205 and may comprise one or more logical channels, including but not limited to a PSCCH, a PSSCH, a PSDCH, and a PSBCH.
  • the UE 201b is shown to be configured to access an AP 206 (also referred to as "WLAN node 206,” “WLAN 206,” “WLAN Termination 206,” “WT 206” or the like) via connection 207.
  • AP 206 also referred to as "WLAN node 206,” “WLAN 206,” “WLAN Termination 206,” “WT 206” or the like
  • the connection 207 can comprise a local wireless connection, such as a connection consistent with any IEEE 802.11 protocol, wherein the AP 206 would comprise a wireless fidelity (Wi-Fi ® ) router.
  • Wi-Fi ® wireless fidelity
  • the AP 206 is shown to be connected to the Internet without connecting to the core network of the wireless system (described in further detail below).
  • the RAN 210 can include one or more AN nodes or RAN nodes 211a and 211b
  • RAN nodes 211 (collectively referred to as “RAN nodes 211" or “RAN node 211") that enable the connections
  • access node may describe equipment that provides the radio baseband functions for data and/or voice connectivity between a network and one or more users.
  • access nodes can be referred to as BS, NR evolved NodeBs (gNodeBs), RAN nodes, eNBs, NodeBs, RSUs, TRxPs or TRPs, and so forth.
  • the term "NG RAN node” or the like may refer to a RAN node 211 that operates in an NR or 5G system 200 (for example, a gNB), and the term “E-UTRAN node” or the like may refer to a RAN node 211 that operates in an LTE or 4G system 200 (e.g., an eNB).
  • the RAN nodes 211 may be implemented as one or more of a dedicated physical device such as a macrocell base station, and/or a low power (LP) base station for providing femtocells, picocells or other like cells having smaller coverage areas, smaller user capacity, or higher bandwidth compared to macrocells.
  • LP low power
  • the UEs 201 can be configured to communicate using OFDM communication signals with each other or with any of the RAN nodes 211 over a multicarrier communication channel in accordance with various communication techniques, such as, but not limited to, an OFDMA communication technique (e.g., for downlink communications) or a
  • the OFDM signals can comprise a plurality of orthogonal subcarriers.
  • a downlink resource grid can be used for downlink
  • the grid can be a time-frequency grid, called a resource grid or time-frequency resource grid, which is the physical resource in the downlink in each slot.
  • Each column and each row of the resource grid corresponds to one OFDM symbol and one OFDM subcarrier, respectively.
  • the duration of the resource grid in the time domain corresponds to one slot in a radio frame.
  • the smallest time-frequency unit in a resource grid is denoted as a resource element.
  • Each resource grid comprises a number of resource blocks, which describe the mapping of certain physical channels to resource elements.
  • Each resource block comprises a collection of resource elements; in the frequency domain, this may represent the smallest quantity of resources that currently can be allocated. There are several different physical downlink channels that are conveyed using such resource blocks.
  • the UEs 201 and the RAN nodes 211, 212 communicate data (for example, transmit and receive) data over a licensed medium (also referred to as the "licensed spectrum” and/or the “licensed band”) and an unlicensed shared medium (also referred to as the "unlicensed spectrum” and/or the “unlicensed band”).
  • the licensed spectrum may include channels that operate in the frequency range of
  • the unlicensed spectrum may include the 5 GHz band.
  • the RAN nodes 211 may be configured to communicate with one another via interface 212.
  • the interface 212 may be an Xn interface 212.
  • the Xn interface is defined between two or more RAN nodes 211 (e.g., two or more gNodeBs or gNBs and the like) that connect to 5GC 220, between a RAN node 211 (e.g., a gNB) connecting to 5GC 220 and an eNB, and/or between two eNBs connecting to 5GC 220.
  • the RAN 210 is shown to be communicatively coupled to a core network— in this embodiment, core network (CN) 220.
  • the CN 220 may comprise a plurality of network elements 222, which are configured to offer various data and telecommunications services to customers/subscribers (e.g., users of UEs 201) who are connected to the CN 220 via the RAN 210.
  • the components of the CN 220 may be implemented in one physical node or separate physical nodes including components to read and execute instructions from a machine- readable or computer-readable medium (e.g., a non-transitory machine-readable storage medium).
  • the application server 230 may be an element offering applications that use
  • IP bearer resources with the core network e.g., UMTS PS domain, LTE PS data services, etc.
  • the application server 230 can also be configured to support one or more communication services (e.g., VoIP sessions, PTT sessions, group communication sessions, social networking services, etc.) for the UEs 201 via the EPC 220.
  • one or more communication services e.g., VoIP sessions, PTT sessions, group communication sessions, social networking services, etc.
  • the CN 220 may be a 5GC (referred to as "5GC 220" or the like), and the RAN 210 may be connected with the CN 220 via an NG interface 213.
  • the NG interface 213 may be split into two parts, an NG user plane (NG-U) interface 214, which carries traffic data between the RAN nodes 211 and a UPF, and the SI control plane (NG-C) interface 215, which is a signaling interface between the RAN nodes 211 and AMFs.
  • NG-U NG user plane
  • N-C SI control plane
  • the CN 220 may be a 5G CN (referred to as "5GC 220” or the like), while in other embodiments, the CN 220 may be an EPC).
  • the RAN 210 may be connected with the CN 220 via an SI interface 213.
  • the SI interface 213 may be split into two parts, an SI user plane (Sl-U) interface 214, which carries traffic data between the RAN nodes 211 and the S- GW, and the Sl-MME interface 215, which is a signaling interface between the RAN nodes 211 and MMEs.
  • SI-U SI user plane
  • Fig. 3 illustrates example components of baseband circuitry 310 and radio front end modules (RFEM) 315 in accordance with various embodiments.
  • Baseband circuitry 310 includes a RF interface 318 connecting it to the RFEM.
  • the RFEMs 315 may include Radio Frequency (RF) circuitry 306, front-end module (FEM) circuitry 308, antenna array 311 coupled together at least as shown.
  • RF Radio Frequency
  • FEM front-end module
  • the baseband circuitry 310 includes circuitry and/or control logic configured to carry out various radio/network protocol and radio control functions that enable communication with one or more radio networks via the RF circuitry 306.
  • the radio control functions may include, but are not limited to, signal modulation/demodulation, encoding/decoding, radio frequency shifting, etc.
  • modulation/demodulation circuitry of the baseband circuitry 310 may include Fast-Fourier Transform (FFT), precoding, or constellation mapping/demapping functionality.
  • FFT Fast-Fourier Transform
  • encoding/decoding circuitry of the baseband circuitry 310 may include convolution, tail-biting convolution, turbo, Viterbi, or Low Density Parity Check (LDPC) encoder/decoder functionality.
  • LDPC Low Density Parity Check
  • the baseband circuitry BIO is configured to process baseband signals received from a receive signal path of the RF circuitry 306 and to generate baseband signals for a transmit signal path of the RF circuitry 306.
  • the baseband circuitry 310 is configured to interface with an application circuitry for generation and processing of the baseband signals and for controlling operations of the RF circuitry 306.
  • the baseband circuitry 310 may handle various radio control functions.
  • the aforementioned circuitry and/or control logic of the baseband circuitry 310 may include one or more single or multi-core processors.
  • the one or more processors may include a 3G baseband processor 304A, a 4G/LTE baseband processor 304B, a 5G/NR baseband processor 304C, or some other baseband processor(s) 304D for other existing generations, generations in development or to be developed in the future (e.g., sixth generation (6G), etc.).
  • some or all of the functionality of baseband processors 304A-D may be included in modules stored in the memory 304G and executed via a Central Processing Unit (CPU) 304E.
  • some or all of the functionality of baseband processors 304A-D may be provided as hardware accelerators (e.g., FPGAs,
  • the memory 304G may store program code of a real time OS (RTOS), which when executed by the CPU 304E (or other baseband processor), is to cause the CPU 304E (or other baseband processor) to manage resources of the baseband circuitry 310, schedule tasks, etc.
  • RTOS real time OS
  • the baseband circuitry 310 includes one or more audio digital signal processor(s) (DSP) 304F.
  • the audio DSP(s) 304F include elements for compression/decompression and echo cancellation and may include other suitable processing elements in other embodiments.
  • each of the processors 304A-304E include respective memory interfaces to send/receive data to/from the memory 304G.
  • the baseband circuitry 310 may further include one or more interfaces to communicatively couple to other circuitries/devices
  • RF circuitry 306 may enable communication with wireless networks
  • the receive signal path of the RF circuitry 306 may include mixer circuitry 306a, amplifier circuitry 306b and filter circuitry 306c.
  • the transmit signal path of the RF circuitry 306 may include filter circuitry 306c and mixer circuitry 306a.
  • RF circuitry 306 may also include synthesizer circuitry 306d for synthesizing a frequency for use by the mixer circuitry 306a of the receive signal path and the transmit signal path.
  • the mixer circuitry 306a of the receive signal path may be configured to down-convert RF signals received from the FEM circuitry 308 based on the synthesized frequency provided by synthesizer circuitry 306d.
  • the amplifier circuitry 306b may be configured to amplify the down-converted signals and the filter circuitry 306c may be a low-pass filter (LPF) or band-pass filter (BPF) configured to remove unwanted signals from the down-converted signals to generate output baseband signals.
  • Output baseband signals may be provided to the baseband circuitry 310 for further processing.
  • the output baseband signals may be zero-frequency baseband signals, although this is not a requirement.
  • mixer circuitry 306a of the receive signal path may comprise passive mixers, although the scope of the embodiments is not limited in this respect.
  • FEM circuitry 308 may include a receive signal path, which may include circuitry configured to operate on RF signals received from antenna array 311, amplify the received signals and provide the amplified versions of the received signals to the RF circuitry 306 for further processing.
  • FEM circuitry 308 may also include a transmit signal path, which may include circuitry configured to amplify signals for transmission provided by the RF circuitry 306 for transmission by one or more of antenna elements of antenna array 311.
  • the amplification through the transmit or receive signal paths may be done solely in the RF circuitry 306, solely in the FEM circuitry 308, or in both the RF circuitry 306 and the FEM circuitry 308.
  • the antenna array 311 comprises one or more antenna elements, each of which is configured convert electrical signals into radio waves to travel through the air and to convert received radio waves into electrical signals.
  • digital baseband signals provided by the baseband circuitry 310 is converted into analog RF signals (e.g., modulated waveform) that will be amplified and transmitted via the antenna elements of the antenna array 311 including one or more antenna elements (not shown).
  • the antenna elements may be omnidirectional, direction, or a combination thereof.
  • the antenna elements may be formed in a multitude of arranges as are known and/or discussed herein.
  • the antenna array 311 may comprise microstrip antennas or printed antennas that are fabricated on the surface of one or more printed circuit boards.
  • the antenna array 311 may be formed in as a patch of metal foil (e.g., a patch antenna) in a variety of shapes, and may be coupled with the RF circuitry
  • Figs. 2 and/or 3 may be used in any of the embodiments described herein.
  • At least one of the components set forth in one or more of the preceding figures may be configured to perform one or more operations, techniques, processes, and/or methods as set forth in the example section below.
  • the baseband circuitry as described above in connection with one or more of the preceding figures may be configured to operate in accordance with one or more of the examples set forth below.
  • circuitry associated with a UE, base station, network element, etc. as described above in connection with one or more of the preceding figures may be configured to operate in accordance with one or more of the examples set forth below in the example section.
  • Figs. 2 and/or 3 such as the shown baseband processing circuitry including processing circuitry and a RF interface, may be used in any of the embodiments described herein, such as in a gNodeB or in a UE.
  • the electronic device(s), network(s), system(s), chip(s) or component(s), or portions or implementations thereof, of Figs. 2 and/or 3, or some other figure herein may be configured to perform one or more processes, techniques, or methods as described herein, or portions thereof.
  • One such process is depicted in Fig. 5.
  • At least one of the components set forth in one or more of the preceding figures may be configured to perform one or more operations, techniques, processes, and/or methods as set forth in the example section below.
  • the baseband circuitry as described above in connection with one or more of the preceding figures may be configured to operate in accordance with one or more of the examples set forth below.
  • circuitry associated with a UE, base station, network element, etc. as described above in connection with one or more of the preceding figures may be configured to operate in accordance with one or more of the examples set forth below in the example section.
  • the electronic device(s), network(s), system(s), chip(s) or component(s), or portions or implementations thereof, of Figs. 2 and/or 3, or some other figure herein may be configured to perform one or more processes, techniques, or methods as described herein, or portions thereof.
  • the electronic device of Figs. 2 and/or 3 may be configured to perform one or more processes, techniques, and/or methods as described herein, or portions thereof.
  • Figs. 2 and/or 3 may be used as appropriate in any of the embodiments described herein.
  • the electronic device(s), network(s), system(s), chip(s) or component(s), or portions or implementations thereof, of Figs. 2 and/or 3, or some other figure herein may be configured to perform one or more processes, techniques, or methods as described herein, or portions thereof.
  • At least one of the components set forth in one or more of the preceding figures may be configured to perform one or more operations, techniques, processes, and/or methods as set forth in the example section below.
  • the baseband circuitry as described above in connection with one or more of the preceding figures may be configured to operate in accordance with one or more of the examples set forth below.
  • circuitry associated with a UE, base station, network element, etc. as described above in connection with one or more of the preceding figures may be configured to operate in accordance with one or more of the examples set forth below in the example section.
  • Example 1 includes a device of a New Radio (NR) User Equipment (UE), the device including a radio frequency (RF) interface, and processing circuitry coupled to the RF interface, the processing circuitry to: decode a downlink control information (DCI) from a NR evolved Node B (gNodeB), the DCI including an indication regarding a selection of one of a first open-loop power control parameters set and a second open-loop power control parameters set, the indication corresponding to an uplink (UL) transmission by the UE, wherein each of the first open-loop power control parameters set and the second open loop power control parameters set comprises a respective ⁇ P Q , a ⁇ , wherein P Q corresponds to a target received power at the gNodeB for UL transmission, and a corresponds to fractional path loss compensation for the UL transmission; select, based on the indication, one of the first open-loop power control parameters set and the second open-loop power control parameters set; and encode the UL transmission for transmission to the g
  • Example 2 includes the subject matter of Example 1, and optionally, wherein the DCI includes an UL scheduling grant, and wherein a field of the DCI includes the indication.
  • Example 3 includes the subject matter of Example 2, and optionally, wherein the DCI further includes an indication of an offset to be applied to a step adjustment, the processing circuitry to use the step adjustment and the offset to determine the transmit power of the UL transmission.
  • Example 4 includes the subject matter of Example 2, and optionally, wherein the indication includes an explicit indication of q and / and an implicit indication, by way of a modulation and coding scheme (MCS) signaled in the DCI, of said one of a first open-loop power control parameters set and a second open-loop power control parameters set, wherein q refers to selection of path loss estimate for the UL transmission for a beamforming channel, and l refers to one of multiple closed loop power control processes of the UE.
  • MCS modulation and coding scheme
  • Example 5 includes the subject matter of Example 1, and optionally, wherein the processing circuitry is to further decode RRC signaling from the gNodeB, and to cause the first open loop power control parameters set and of the second open-loop power control parameters set to be configured to the UE based on the RRC signaling.
  • Example 6 includes the subject matter of Example 1, and optionally, wherein the DCI further includes an indication regarding one or more q, wherein each q of the one or more q refers to a selection of path loss estimate for the UL transmission for a respective
  • the processing circuitry is to: determine, from the DCI, a corresponding one of the one or more q for said one of the first open-loop power control parameters set and the second open-loop power control parameters set; and cause the corresponding one of the one or more q to be configured to the UE, wherein a transmit power of the UL transmission is further based on a corresponding one of the one or more q.
  • Example 7 includes the subject matter of Example 1, and optionally, wherein: the DCI further includes an indication regarding one or more /; each / of the one or more / refers to a respective closed loop power control process; each respective closed loop power control process includes a range of power control step adjustments; and the processing circuitry is to: determine, from the DCI, a corresponding one of the one or more / for said one of the first open-loop power control parameters set and the second open-loop power control parameters set; and cause the corresponding one of the one or more / to be configured to the
  • a transmit power of the UL transmission is further based on a corresponding one of the one or more /.
  • Example 8 includes the subject matter of any one of the Example above, further including a front-end module coupled to the RF interface.
  • Example 9 includes the subject matter of Example 8, and optionally, further including one or more antennas coupled to the front-end module to transmit and receive signals at the UE.
  • Example 10 includes a method to be performed at a device of a New Radio (NR) User Equipment (UE), the method including: decoding a downlink control information (DCI) from a NR evolved Node B (gNodeB), the DCI including an indication regarding a selection of one of a first open-loop power control parameters set and a second open-loop power control parameters set, the indication corresponding to an UL transmission by the UE, wherein each of the first open-loop power control parameters set and the second open loop power control parameters set comprises a respective ⁇ P 0 , a ⁇ , wherein P 0 corresponds to a target received power at the gNodeB for the UL transmission, and a corresponds to fractional path loss compensation for the UL transmission; selecting, based on the indication, one of the first open-loop power control parameters set and the second open-loop power control parameters set; and encoding the UL transmission for transmission to the gNodeB, wherein a transmit power of the UL transmission is
  • Example 11 includes the subject matter of Example 10, and optionally, wherein the DCI includes an UL scheduling grant, and wherein a field of the DCI includes the indication.
  • Example 12 includes the subject matter of Example 11, and optionally, wherein the DCI further includes an indication of an offset to be applied to a step adjustment, the method including using the step adjustment and the offset to determine the transmit power of the UL transmission.
  • Example 13 includes the subject matter of Example 11, and optionally, wherein the indication includes an explicit indication of q and / and an implicit indication, by way of a modulation and coding scheme (MCS) signaled in the DCI, of said one of a first open-loop power control parameters set and a second open-loop power control parameters set, wherein q refers to selection of path loss estimate for the UL transmission for a beamforming channel, and l refers to one of multiple closed loop power control processes of the UE.
  • MCS modulation and coding scheme
  • Example 14 includes the subject matter of Example 11, and optionally, further including decoding RRC signaling from the gNodeB, and to cause the first open loop power control parameters set and of the second open-loop power control parameters set to be configured to the UE based on the RRC signaling.
  • Example 15 includes the subject matter of Example 11, and optionally, wherein: the DCI further includes an indication regarding one or more q, wherein each q of the one or more q refers to a selection of path loss estimate for the UL transmission for a respective beamforming channel; and the method further includes: determining, from the DCI, a corresponding one of the one or more q for said one of the first open-loop power control parameters set and the second open-loop power control parameters set; and causing the corresponding one of the one or more q to be configured to the UE, wherein a transmit power of the UL transmission is further based on a corresponding one of the one or more q.
  • Example 16 includes the subject matter of Example 10, and optionally, wherein: the DCI further includes an indication regarding one or more /; each / of the one or more / refers to a respective closed loop power control process; each respective closed loop power control process includes a range of power control step adjustments; and the method further includes: determining, from the DCI, a corresponding one of the one or more / for said one of the first open-loop power control parameters set and the second open-loop power control parameters set; and causing the corresponding one of the one or more / to be configured to the UE wherein a transmit power of the UL transmission is further based on a corresponding one of the one or more I.
  • Example 17 includes a device of a New Radio (NR) User Equipment (UE), the device including: means for decoding a downlink control information (DCI) from a NR evolved Node B (gNodeB), the DCI including an indication regarding a selection of one of a first open-loop power control parameters set and a second open-loop power control parameters set, the indication corresponding to an uplink (UL) transmission by the UE, wherein each of the first open-loop power control parameters set and the second open loop power control
  • DCI downlink control information
  • gNodeB NR evolved Node B
  • parameters set comprises a respective ⁇ P 0 , a ⁇ , wherein P 0 corresponds to a target received power at the gNodeB for the UL transmission, and a corresponds to fractional path loss compensation for the UL transmission; means for selecting, based on the indication, one of the first open-loop power control parameters set and the second open-loop power control parameters set; and means for encoding the UL transmission for transmission to the gNodeB, wherein a transmit power of the UL transmission is based on said one of the first open-loop power control parameters set and the second open-loop power control parameters set.
  • Example 18 includes the subject matter of Example 17, and optionally, wherein the DCI includes an UL scheduling grant, and wherein a field of the DCI includes the indication.
  • Example 19 includes the subject matter of Example 17, and optionally, wherein the DCI further includes an indication of an offset to be applied to a step adjustment, further including means for using the step adjustment and the offset to determine the transmit power of the UL transmission.
  • Example 20 includes the subject matter of Example 17, and optionally, wherein the indication includes an explicit indication of q and / and an implicit indication, by way of a modulation and coding scheme (MCS) signaled in the DCI, of said one of a first open-loop power control parameters set and a second open-loop power control parameters set, wherein q refers to selection of path loss estimate for the UL transmission for a beamforming channel, and l refers to one of multiple closed loop power control processes of the UE.
  • MCS modulation and coding scheme
  • Example 21 includes the subject matter of Example 17, and optionally, further including means for decoding RRC signaling from the gNodeB, and to cause the first open loop power control parameters set and of the second open-loop power control parameters set to be configured to the UE based on the RRC signaling.
  • Example 22 includes the subject matter of Example 17, and optionally, wherein: the DCI further includes an indication regarding one or more q, wherein each q of the one or more q refers to a selection of path loss estimate for the UL transmission for a respective beamforming channel; and the device further includes: means for determining, from the DCI, a corresponding one of the one or more q for said one of the first open-loop power control parameters set and the second open-loop power control parameters set; and means for causing the corresponding one of the one or more q to be configured to the UE, wherein a transmit power of the UL transmission is further based on a corresponding one of the one or more q.
  • Example 23 includes the subject matter of Example 17, and optionally, wherein: the DCI further includes an indication regarding one or more /; each / of the one or more / refers to a respective closed loop power control process; each respective closed loop power control process includes a range of power control step adjustments; and the device further includes: means for determining, from the DCI, a corresponding one of the one or more / for said one of the first open-loop power control parameters set and the second open-loop power control parameters set; and means for causing the corresponding one of the one or more / to be configured to the UE wherein a transmit power of the UL transmission is further based on a corresponding one of the one or more /.
  • Example 24 includes a device of a New Radio (NR) evolved Node B (gNodeB), the device including a radio frequency (RF) interface, and processing circuitry coupled to the RF interface, the processing circuitry to: encode a downlink control information (DCI) for transmission to a NR User Equipment (UE), the DCI including an indication regarding a selection of one of a first open-loop power control parameters set and a second open-loop power control parameters set, the indication corresponding to an uplink (UL) transmission by the UE, wherein each of the first open-loop power control parameters set and the second open loop power control parameters set comprises a respective ⁇ P 0 , a ⁇ , wherein
  • DCI downlink control information
  • UE NR User Equipment
  • P Q corresponds to a target received power at the gNodeB for UL transmission
  • a corresponds to fractional path loss compensation for the UL transmission, wherein a transmit power of the UL transmission is to be based on said one of the first open-loop power control parameters set and the second open-loop power control parameters set; and cause transmission of the DCI to the UE.
  • Example 25 includes the subject matter of Example 24, and optionally, wherein the DCI includes an UL scheduling grant, and wherein a field of the DCI includes the indication.
  • Example 26 includes the subject matter of Example 24, and optionally, wherein the DCI further includes an indication of an offset to be applied to a step adjustment, the transmit power of the UL transmission to be based on the offset and the step adjustment.
  • Example 27 includes the subject matter of Example 24, and optionally, wherein the indication includes an explicit indication of q and / and an implicit indication, by way of a modulation and coding scheme (MCS) signaled in the DCI, of said one of a first open-loop power control parameters set and a second open-loop power control parameters set, wherein q refers to selection of path loss estimate for the UL transmission for a beamforming channel, and l refers to one of multiple closed loop power control processes of the UE.
  • MCS modulation and coding scheme
  • Example 28 includes the subject matter of Example 24, and optionally, the processing circuitry to encode RRC signaling for transmission to the UE, and to cause transmission of the RRC signaling to the UE, the first open loop power control parameters set and of the second open-loop power control parameters set to be configured to the UE based on the RRC signaling.
  • Example 29 includes the subject matter of Example 24, and optionally, wherein the DCI further includes an indication regarding one or more q, wherein each q of the one or more q refers to a selection of path loss estimate for the UL transmission for a respective beamforming channel.
  • Example 30 includes the subject matter of Example 24, and optionally, wherein: the DCI further includes an indication regarding one or more /; each / of the one or more / refers to a respective closed loop power control process; and each respective closed loop power control process includes a range of power control step adjustments.
  • Example 31 includes the subject matter of any one of device Examples above, and optionally, further including a front-end module coupled to the RF interface.
  • Example 32 includes the subject matter of Example 31, and optionally, further including one or more antennas coupled to the front-end module to transmit and receive signals at the UE.
  • Example 33 includes a product comprising one or more tangible computer-readable non-transitory storage media comprising computer-executable instructions operable to, when executed by at least one computer processor, enable the at least one computer processor to perform the method of any one of the method Examples above.
  • Example 34 includes an apparatus comprising means for causing a wireless communication device to perform the method of any one of the method Examples above.
  • Example 35 includes a signal as described in or related to any of the examples above, or portions or parts thereof.
  • Example 36 includes a signal in a wireless network as shown and described herein.
  • Example 37 includes a method of communicating in a wireless network as shown and described herein.
  • Example 38 includes a system for providing wireless communication as shown and described herein.
  • Example 39 includes an apparatus, method, or machine-readable media according to any of any one of the relevant Examples or descriptions above, wherein the apparatus, method, or machine-readable media or any portion thereof is implemented in or by a user equipment (UE).
  • UE user equipment
  • Example 40 includes an apparatus, method, or machine-readable media according to any of any one of the relevant Examples or descriptions above, wherein the apparatus, method, or machine-readable media or any portion thereof is implemented in by a base station (BS) or gNodeB.
  • BS base station
  • gNodeB gNodeB

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un dispositif d'un équipement d'utilisateur (UE) de nouvelle radio (NR), un procédé, un système et un support lisible par machine. Le procédé consiste à : décoder des informations de commande de liaison descendante (DCI) à partir d'un nœud évolué B de NR (gNodeB) comprenant une indication d'une sélection d'un ensemble entre des premier et second ensembles de paramètres de commande de puissance en boucle ouverte, chaque ensemble des premier et second ensembles de paramètres de commande de puissance en boucle ouverte comprenant des paramètres {P 0 , α} respectifs, P 0 correspondant à une puissance reçue cible au niveau du gNodeB de la transmission en UL, et α correspondant à une compensation de perte de trajet fractionnelle de la transmission en UL ; sélectionner, sur la base de l'indication, l'un des premier et second ensembles de paramètres de commande de puissance en boucle ouverte ; et coder la transmission en UL à des fins de transmission au gNodeB, une puissance de transmission de la transmission en UL étant basée sur ledit ensemble des premier et second ensembles de paramètres de commande de puissance en boucle ouverte.
PCT/US2019/059508 2018-11-02 2019-11-01 Commande de puissance de liaison montante (ul) d'équipement d'utilisateur (ue) de nouvelle radio (nr) WO2020092985A1 (fr)

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CN202410310912.2A CN118201055A (zh) 2018-11-02 2019-11-01 新无线电（nr）用户设备（ue）的ul功率控制
CN201980036427.8A CN112913288A (zh) 2018-11-02 2019-11-01 新无线电(nr)用户设备(ue)的上行链路(ul)功率控制
EP19877912.6A EP3874837A4 (fr) 2018-11-02 2019-11-01 Commande de puissance de liaison montante (ul) d'équipement d'utilisateur (ue) de nouvelle radio (nr)

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US201862755338P 2018-11-02 2018-11-02
US62/755,338 2018-11-02

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CN112913288A (zh) 2021-06-04
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EP3874837A4 (fr) 2022-08-03

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