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WO2020050594A1 - Procédé et appareil pour la configuration d'une antenne de terminal dans un système de communication sans fil - Google Patents

Procédé et appareil pour la configuration d'une antenne de terminal dans un système de communication sans fil Download PDF

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Publication number
WO2020050594A1
WO2020050594A1 PCT/KR2019/011340 KR2019011340W WO2020050594A1 WO 2020050594 A1 WO2020050594 A1 WO 2020050594A1 KR 2019011340 W KR2019011340 W KR 2019011340W WO 2020050594 A1 WO2020050594 A1 WO 2020050594A1
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WO
WIPO (PCT)
Prior art keywords
terminal
antenna port
base station
csi
mode
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.)
Ceased
Application number
PCT/KR2019/011340
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English (en)
Korean (ko)
Inventor
박진현
노훈동
곽영우
김윤선
신철규
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.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020180137604A external-priority patent/KR102664932B1/ko
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Priority to EP19857728.0A priority Critical patent/EP3829073A4/fr
Priority to US17/250,772 priority patent/US12218726B2/en
Priority to CN201980065166.2A priority patent/CN112789810B/zh
Publication of WO2020050594A1 publication Critical patent/WO2020050594A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present disclosure relates to a wireless communication system, and more particularly, to a method and apparatus for setting a terminal antenna.
  • a 5G communication system or a pre-5G communication system is called a Beyond 4G network communication system or a post LTE system.
  • 5G communication systems are being considered for implementation in the ultra-high frequency (mmWave) band (eg, 60 gigahertz (60 GHz) band).
  • mmWave ultra-high frequency
  • FD-MIMO full dimensional multiple input / output
  • Array antenna, analog beamforming, and large scale antenna techniques are discussed.
  • an evolved small cell in order to improve the network of the system, in the 5G communication system, an evolved small cell, an advanced small cell, a cloud radio access network (cloud RAN), an ultra-dense network , Device to Device communication (D2D), wireless backhaul, mobile network, cooperative communication, CoMP (Coordinated Multi-Points), and interference cancellation Technology development is being conducted.
  • cloud RAN cloud radio access network
  • D2D Device to Device communication
  • wireless backhaul mobile network
  • CoMP Coordinatd Multi-Points
  • CoMP Coordinatd Multi-Points
  • OFQAM Hybrid FSK and QAM Modulation
  • SWSC sliding window superposition coding
  • ACM Advanced Coding Modulation
  • FBMC Fan Bank Multi Carrier
  • NOMA advanced access technologies. (non orthogonal multiple access), and sparse code multiple access (SCMA) are being developed.
  • IoT Internet of Things
  • IoE Internet of Everything
  • M2M Machine to machine
  • MTC Machine Type Communication
  • IoT an intelligent IT (Internet Technology) service that collects and analyzes data generated from connected objects to create new values in human life may be provided.
  • IoT is a field of smart home, smart building, smart city, smart car or connected car, smart grid, healthcare, smart home appliances, advanced medical services, etc. through convergence and complex of existing information technology (IT) technology and various industries. It can be applied to.
  • the present disclosure relates to various base station-to-terminal operation methods for transmitting and receiving a terminal antenna deactivation and an activation signal in a wireless communication system.
  • a method of operating a terminal for controlling an antenna port of a terminal in a wireless communication system selecting a band for receiving control information and data during initial access of the terminal ; Reporting whether the antenna port supports activation to the base station; Receiving antenna port activation indication information from a base station; And determining whether to activate the antenna port based on the received antenna port activation indication information.
  • FIG. 1 is a diagram illustrating a time-frequency domain transmission structure of an LTE, LTE-A, NR, or similar wireless communication system.
  • FIGS. 2 to 4 are views illustrating an extended frame structure according to an embodiment of the present disclosure.
  • FIG. 5 is a diagram illustrating a framework of channel state information according to an embodiment of the present disclosure.
  • FIG. 6 is a diagram illustrating designation of a CSI-RS resource element by CSI-RS resource mapping according to an embodiment of the present disclosure.
  • FIG. 7 is a view showing a relationship between CSI reference resource, CSI reference resource, and CSI-RS according to an embodiment of the present disclosure.
  • FIG. 8 is a diagram illustrating an example of a method of reporting whether a reception antenna port of a terminal is deactivated / activated according to an embodiment of the present disclosure.
  • FIG. 9 is a diagram illustrating an example of a method for setting a terminal Rx mode through higher layer signaling between a base station and a terminal according to an embodiment of the present disclosure.
  • FIG. 10 is a diagram illustrating an example of a method of setting a terminal Rx mode for each bandwidth according to an embodiment of the present disclosure.
  • 11 is a diagram illustrating an example of a method for setting a terminal Rx mode for each slot according to an embodiment of the present disclosure.
  • FIG. 12 is a diagram illustrating an example of setting a CSI-RS resource set according to an embodiment of the present disclosure.
  • FIG. 13 is a diagram illustrating an example of CSI-RS resource configuration according to an embodiment of the present disclosure.
  • FIG. 14 is a diagram illustrating an example of a method for setting a terminal receiving antenna port according to a CSI report setting according to an embodiment of the present disclosure.
  • 15 is a diagram illustrating an example of a CSI report triggered by DCI according to an embodiment of the present disclosure.
  • 16, 17 and 18 are diagrams illustrating an example of a method for setting Rx mode for CSI-RS reception or channel state information reporting.
  • 19A to 19D are diagrams illustrating an example of an operation between a base station and a terminal according to a combination of embodiments of the present disclosure.
  • 20 is a flowchart illustrating an operation of a terminal according to an embodiment of the present disclosure.
  • 21 is a diagram illustrating the structure of a terminal according to an embodiment of the present disclosure.
  • 22 is a diagram illustrating a structure of a base station according to an embodiment of the present disclosure.
  • a method of operating a terminal for controlling an antenna port of a terminal in a wireless communication system comprising: selecting a band for receiving control information and data during initial access of the terminal; Reporting whether the antenna port supports activation to the base station; Receiving antenna port activation indication information from a base station; And determining whether to activate the antenna port based on the received antenna port activation indication information.
  • a method of operating a terminal controlling an antenna port of a terminal, reporting whether the antenna port is activated is supported to the base station, the maximum number of layers of the PDSCH that the terminal can receive And reporting a UE capability report including information to a base station.
  • the step of reporting whether the antenna port is activated to the base station is whether or not a switch operation between a plurality of antenna port activation modes is supported. It may include the step of reporting to.
  • the step of reporting whether the antenna port is activated to the base station is a bitmap of the number of antenna ports that can be activated. And reporting to the base station.
  • the step of reporting whether the antenna port is activated to a base station is a mode in which a predetermined number of antenna ports is activated
  • the second activation mode which is a mode in which a number of antenna ports different from a predetermined number of antenna ports is activated, may include reporting to the base station whether a switching operation is supported.
  • the step of reporting whether the antenna port is activated to the base station is whether the antenna port supports activation / deactivation switching. It may include a step of reporting whether the bitmap to the base station.
  • receiving antenna port activation indication information from a base station comprises: through the upper layer signaling, the antenna port activation indication And receiving information from the base station.
  • receiving antenna port activation indication information from a base station through at least one of MAC CE and DCI, And receiving antenna port activation indication information from the base station.
  • receiving antenna port activation indication information from a base station includes antenna port activation indication information for each bandwidth of the terminal. And receiving from the base station.
  • receiving antenna port activation instruction information from a base station includes antenna port activation instruction information for each slot of the terminal. It may include the step of receiving from the base station.
  • a method of operating a terminal controlling an antenna port of a terminal in a wireless communication system includes: receiving an instruction for an antenna port active mode for measuring a channel state; Measuring a channel state for an indicated antenna port active mode; And reporting the measured channel state to the base station.
  • the step of being instructed about an antenna port active mode for measuring a channel state is performed on at least one transmission / reception beam Based on the CSI-RS Resource Set (CSI-RS Resource Set) including at least one CSI-RS resource (Resource) mapped to each, including the step of receiving instructions from the base station for the antenna port active mode to measure the channel state You can.
  • CSI-RS Resource Set including at least one CSI-RS resource (Resource) mapped to each
  • the step of being instructed about an antenna port active mode for measuring a channel state includes information on a reference signal.
  • the antenna port active mode for measuring a channel state may include receiving an instruction from a base station.
  • the step of being instructed about an antenna port active mode for measuring a channel state is at least one CSI-RS resource set Based on the CSI resource setting including (Resource Set), it may include the step of receiving an instruction from the base station for the antenna port active mode to measure the channel state.
  • the step of being instructed about an antenna port active mode for measuring a channel state includes information on a CSI reporting method Based on the CSI report setting (Report Setting), for the antenna port active mode to measure the channel state, may include the step of receiving instructions from the base station.
  • the step of being instructed about an antenna port active mode for measuring a channel state includes: CSI resource setting and Receiving instructions from the base station for an antenna port active mode for measuring a channel condition based on transmission characteristics for a reference signal included in at least one of CSI report settings and whether to activate the antenna port. It may include.
  • receiving the antenna port activation indication information from a base station, a CSI request mapped to a trigger state may include receiving the antenna port activation indication information from a base station based on a CSI report setting triggered according to a request field.
  • a method of operating a terminal that controls an antenna port of a terminal includes channel state information based on an antenna port activation mode at the time of receiving a CSI-RS resource from a base station. Measuring; And reporting the measured channel state information and the activation / deactivation setting information of the antenna port on which the channel state information is measured to the base station.
  • a method of operating a terminal that controls an antenna port of a terminal includes, before receiving a CSI-RS resource from a base station, an activation mode of the antenna port, 1 changing to an activation mode; When receiving the CSI-RS resource from a base station, measuring channel state information for each of the at least one activation mode based on the predetermined first activation mode; And reporting the measured channel state information to the base station.
  • a method of operating a terminal that controls an antenna port of a terminal includes channel state information based on an antenna port activation mode of a band in which a CSI-RS resource is received from a base station. Measuring; And reporting the measured channel state information to the base station.
  • a method of operating a terminal controlling an antenna port of a terminal measures channel state information based on an antenna port activation mode for a CSI-RS reference resource from a base station To do; And reporting the measured channel state information to the base station.
  • a method of operating a base station to control an antenna port of a terminal includes: receiving whether the antenna port is activated or not; And transmitting the antenna port activation indication information to the terminal based on whether the reported antenna port activation is supported.
  • a terminal controlling an antenna port of a terminal includes: a transceiver; A memory for storing programs; And by executing a program, upon initial access of the terminal, selects a band for receiving control information and data, reports whether the antenna port is activated or not, reports to the base station whether to receive the antenna port activation instruction information from the base station, and , Based on the received antenna port activation indication information, it may include a processor for determining whether to activate the antenna port.
  • a base station for controlling an antenna port of a terminal includes: a transceiver; A memory for storing programs; And a processor that transmits antenna port activation indication information to the terminal based on whether the antenna port is activated or not, and whether the antenna port is activated or not by executing the program.
  • each block of the process flow chart diagrams and combinations of flow chart diagrams can be performed by computer program instructions. Since these computer program instructions may be mounted on a processor of a general purpose computer, special purpose computer, or other programmable data processing equipment, those instructions executed through the processor of the computer or other programmable data processing equipment may be described in flow chart block (s). It will create means to perform the functions. These computer program instructions may be stored in a computer usable or computer readable memory that can be directed to a computer or other programmable data processing equipment to implement functionality in a particular manner, and thus the computer usable or computer readable memory. Instructions stored therein may also be capable of producing an article of manufacture containing instruction means for performing the functions described in the flowchart block (s).
  • Computer program instructions may also be mounted on a computer or other programmable data processing equipment, such that a series of operating steps may be performed on the computer or other programmable data processing equipment to create a computer-implemented process to create a computer or other programmable data. Instructions for performing the processing equipment may also be capable of providing steps for performing the functions described in the flowchart block (s).
  • each block may represent a module, segment, or portion of code that includes one or more executable instructions for executing the specified logical function (s). It should also be noted that in some alternative implementations, it is also possible that the functions mentioned in the blocks occur out of sequence. For example, the two blocks shown in succession may in fact be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending on the corresponding function.
  • the term ' ⁇ part' used in the present embodiment refers to software or a hardware component such as a field programmable gate array (FPGA) or an application specific integrated circuit (ASIC), and ' ⁇ part' performs certain roles. do.
  • ' ⁇ wealth' is not limited to software or hardware.
  • the ' ⁇ unit' may be configured to be in an addressable storage medium or may be configured to reproduce one or more processors.
  • ' ⁇ part' means components such as software components, object-oriented software components, class components, and task components, and processes, functions, properties, programs, and the like. Procedures, subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays, and variables.
  • components and ' ⁇ units' may be combined into a smaller number of components and ' ⁇ units', or further separated into additional components and ' ⁇ units'.
  • the components and ' ⁇ unit' may be implemented to play one or more CPUs in the device or secure multimedia card.
  • ' ⁇ unit' may include one or more processors.
  • the base station is a subject that performs resource allocation of the terminal, and may be at least one of a gNode B, an eNode B, a Node B, a base station (BS), a wireless access unit, a base station controller, or a node on a network.
  • the terminal may include a user equipment (UE), a mobile station (MS), a cellular phone, a smartphone, a computer, or a multimedia system capable of performing a communication function. Of course, it is not limited to the example.
  • the present disclosure describes a technique for a terminal to transmit and receive information with a base station in a wireless communication system.
  • the present disclosure relates to a communication technique and a system that converge with a broadband wireless communication system for providing a high-speed, high-quality data service, such as a 5G communication system, and application services such as the Internet of Things (IoT).
  • IoT Internet of Things
  • the present disclosure is based on 5G communication technology and IoT-related technologies, such as intelligent services (eg, smart home, smart building, smart city, smart car or connected car, healthcare, digital education, retail, security and safety related services, etc.). ) Can be applied.
  • LTE 3rd generation partnership project long term evolution
  • NR 5G new radio
  • the wireless communication system has moved away from providing the initial voice-oriented service, for example, 3GPP High Speed Packet Access (HSPA), Long Term Evolution (LTE) or Evolved Universal Terrestrial Radio Access (E-UTRA), LTE-Advanced.
  • Broadband that provides high-speed, high-quality packet data services such as LTE-A, LTE-A Pro, 3GPP2's High Rate Packet Data (HRPD), UMB (Ultra Mobile Broadband), and IEEE's 802.16e Evolving into a wireless communication system.
  • an LTE system employs an orthogonal frequency division multiplexing (OFDM) scheme in downlink (DL) and a single carrier frequency division multiple access (SC-FDMA) in uplink (UL).
  • OFDM orthogonal frequency division multiplexing
  • SC-FDMA single carrier frequency division multiple access
  • the uplink refers to a radio link through which the terminal transmits data or control signals to the base station
  • the downlink refers to a radio link through which the base station transmits data or control signals to the terminal.
  • the multiple access scheme such as the data or control information of each user, the user can be allocated and operated so that time-frequency-spatial resources for carrying data or control information do not overlap each other, that is, orthogonality is established.
  • the 5G communication system must be able to freely reflect various requirements such as users and service providers, and thus services that satisfy various requirements must be supported.
  • Services considered for 5G communications systems include Enhanced Mobile BroadBand (eMBB), Massive Machine Type Communication (mMTC), and Ultra Reliability Low Latency Communciation (URLLC).
  • eMBB Enhanced Mobile BroadBand
  • mMTC Massive Machine Type Communication
  • URLLC Ultra Reliability Low Latency Communciation
  • the eMBB aims to provide a data rate higher than the data rate supported by the existing LTE, LTE-A, or LTE-A Pro.
  • an eMBB should be able to provide a maximum data rate of 20Gbps in downlink and a maximum data rate of 10Gbps in uplink from a single base station.
  • an actual user perceived data rate of the increased terminal must be provided.
  • MIMO Multi Input Multi Output
  • mMTC is being considered to support application services such as IoT in 5G communication systems.
  • the mMTC may require large terminal access in a cell, improved terminal coverage, improved battery time, and reduced terminal cost.
  • the IoT is attached to various sensors and various devices to provide a communication function, it must be able to support a large number of terminals (eg, 1,000,000 terminals / km 2 ) in a cell.
  • the terminal supporting the mMTC is likely to be located in a shaded area that the cell does not cover, such as the basement of the building due to the nature of the service may require more coverage than other services provided by the 5G communication system.
  • the terminal supporting the mMTC should be configured as a low-cost terminal, and very long battery life time may be required because it is difficult to frequently exchange the battery of the terminal.
  • URLLC it is a cellular-based wireless communication service used for mission-critical purposes, such as remote control of robots or machinery, industrial automation, Services used in unmanned aerial vehicles, remote health care, emergency alerts, and the like, which must provide communications that provide ultra low latency and ultra reliability.
  • a service that supports URLLC must meet air interface latency of less than 0.5 milliseconds, while at the same time meeting the requirements of packet error rates below 10 ⁇ -5.
  • 5G systems must provide a smaller transmit time interval (TTI) than other services, and at the same time, a design requirement for allocating wide resources in a frequency band is required.
  • TTI transmit time interval
  • each service considered may be provided in a fusion with each other based on a framework. That is, for efficient resource management and control, each service may be integrated and controlled and transmitted in one system.
  • FIG. 1 is a diagram illustrating data or control channels of LTE, LTE-A, LTE-A Pro, and 5G NR systems based on Cyclic Prefix (CP) OFDM (CP-OFDM) or SC-FDMA waveforms.
  • FIG. I s a diagram illustrating the basic structure of a time-frequency resource region, which is a radio resource region. In FIG. 1, the horizontal axis represents the time domain and the vertical axis represents the frequency domain.
  • the minimum transmission unit in the time domain of LTE, LTE-A, LTE-A Pro, and 5G NR systems is an OFDM symbol or an SC-FDMA symbol, in which Nsymb ⁇ slot (1-05) symbols are gathered into one slot. (1-15) can be configured.
  • Nsymb ⁇ slot may be determined according to the length of a cyclic prefix (CP) added per symbol to prevent intersymbol interference.
  • CP cyclic prefix
  • Nsymb 14
  • Nsymb 12.
  • the extended CP can be applied to a system having a relatively large propagation transmission distance than the general CP, thereby maintaining orthogonality between symbols.
  • 5G NR may support two types of slot structures, a slot and a mini-slot.
  • Minislot here may be referred to as non-slot.
  • a slot may have a length of 0.5 ms, and a subframe may have a length of 1.0 ms.
  • the length of the slot or minislot can vary flexibly with subcarrier spacing.
  • the flexible extended frame structure of the 5G NR system will be described later.
  • the basic unit of resource in the time-frequency domain is a resource element (1-30, Resource Element; RE), which may be represented by an OFDM symbol or an SC-FDMA symbol index and a subcarrier index.
  • the resource block (1-20, Resource Block; RB or PRB) is Nsymb ⁇ slot (1-05) consecutive OFDM symbols or SC-FDMA symbols in the time domain and NRB (1-25) in the frequency domain. It can be defined as two consecutive subcarriers. Therefore, one RB (1-20) is composed of Nsymb x NRB REs (1-30). Data is mapped in units of RBs, and the base station performs scheduling in units of RBs for a predetermined terminal.
  • subcarrier spacing, CP length, and the like are information necessary for OFDM transmission and reception, and may be values that the base station and the terminal recognize as common values.
  • the frame structure of the LTE and LTE-A systems is designed in consideration of conventional voice / data communication, and may have scalability constraints to satisfy various service and user requirements such as 5G NR systems. Therefore, in the 5G NR system according to an embodiment of the present disclosure, by defining a flexible frame structure (flexible), it is possible to satisfy a variety of services and user requirements.
  • FIGS. 2 through 4 illustrate an expandable frame structure, according to some embodiments.
  • the required parameter set defining the extended frame structure may include a subcarrier spacing, a CP length, a slot length, and the like.
  • a basic time unit for performing scheduling may be a slot.
  • the 5G NR system may be operated independently or may be operated in dual mode in coexistence with the LTE / LTE-A / LTE-A Pro system. Through this, existing LTE / LTE-A / LTE-A Pro can provide stable system operation, and 5G NR system can provide improved service. Accordingly, the extended frame structure of the 5G system may include the frame structure of the LTE / LTE-A / LTE-A Pro or a required parameter set.
  • FIG. 2 is a diagram illustrating a 5G NR frame structure or a required parameter set, such as a frame structure of LTE / LTE-A / LTE-A Pro.
  • PRB physical resource block
  • the subcarrier spacing is 30 kHz
  • 14 symbols constitute a 0.5 ms slot
  • high scalability may be provided by having an essential parameter set such as subcarrier spacing, CP length, slot length, and the like, having an integral multiple of each frame structure type.
  • a subframe having a fixed length of 1 ms may be defined to represent a reference time unit irrelevant to the above-described frame structure type. Therefore, frame structure type A has one subframe composed of one slot, frame structure type B has one subframe composed of two slots, and frame structure type C has one subframe composed of four slots. Can be configured.
  • the expandable frame structure is not limited to the frame structure types A, B, or C described above, and it is obvious that the extendable frame structure may be applied to other subcarrier intervals such as 120 kHz and 240 kHz, and may have different structures.
  • the frame structure type described above may be applied to various scenarios.
  • the frame structure type A can support a relatively larger cell than the frame structure types B and C.
  • the frame structure type C can support a relatively higher operating frequency than the frame structures A and B because the larger the subcarrier interval, the more favorable the phase noise recovery of the high frequency band.
  • the frame structure type C is a URLLC service relatively to the frame structure types A and B. Suitable for
  • frame structure types may be multiplexed and integrated in one system.
  • the CSI framework of NR of FIG. 5 may be composed of two elements: resource setting and report setting.
  • the report setting may configure at least one link with each other by referring to the ID of the resource setting.
  • the resource setting may include information related to a reference signal (RS).
  • the base station may set at least one resource setting (5-00, 5-05, 5-15) to the terminal.
  • Each resource setting may include at least one resource set 5-20 and 5-25.
  • Each resource set may include at least one resource (5-30, 5-35).
  • Each resource (5-30, 5-35) has detailed information about the RS, for example, RE element location information to which the RS is transmitted, an offset in the RS transmission period and time axis, and the number of ports of the RS. And the like.
  • the report setting may include information related to the CSI reporting method.
  • the base station may set at least one report setting (5-40, 5-45, 5-50) to the terminal.
  • each report setting includes report transmission characteristic information such as aperiodic, semi-permanent, and periodic, a type of a channel on which a report is transmitted (for example, a physical uplink shared channel (PUSCH) or a physical uplink control channel (PUCCH)),
  • the type of channel state information to be reported for example, the number of ranks, the precoding matrix index, and the channel quality indicator (CQI) may be included.
  • PUSCH physical uplink shared channel
  • PUCCH physical uplink control channel
  • CQI channel quality indicator
  • each report setting may include a frequency band for channel status information report, whether to use a wideband PMI / CQI that reports a single PMI or CQI for all of the frequency bands, or to use a narrowband (for example, multiple narrowbands). and subband PMI / CQI reporting one PMI or CQI for each narrowband after dividing into subbands.
  • the report setting may include at least one ID for referencing the reference signal (or RE location) information for the channel or interference measurement referenced by the terminal in the CSI report. This is plotted via links (5-60, 5-65, 5-70, 5-75).
  • the resource setting (5-00) is a channel measurement (channel measurement) can be used.
  • link (5-65, 5-70) links one reporting setting (5-45) and two resource settings (5-00, 5-05)
  • one of the two The resource setting may be used for channel measurement
  • the remaining resource setting may be used for interference measurement.
  • each resource setting may include resource transmission characteristic information such as aperiodic, semi-persistent, periodic, and transmission band information such as BWP for transmitting resources. It may include.
  • each resource set in the resource setting may set information including values listed below through an upper layer. However, it is not necessarily limited to the following examples.
  • the UE may know that the same spatial domain transport filter is applied to all resources belonging to the resource set. That is, the terminal may assume that the base station uses the same transmission beam. In addition, the terminal can be seen that each resource has the same port number and period (periodicity).
  • the UE may not assume that the same spatial domain transport filter is applied to all of the non-zero power (NZP) CSI-RS resources belonging to the resource set. That is, the terminal may not assume that the base station used the same transmission beam. The terminal may not know that each resource has the same port number and period.
  • NZP non-zero power
  • the NZP CSI-RS may be the most representative reference signal set in a resource set.
  • the resource set may set information including values listed below for each CSI-RS through an upper layer. However, it is not limited to the following examples.
  • periodicityAndOffset Transmission period and slot offset of the corresponding CSI-RS resource.
  • CSI-RS-resourceMapping OFDM symbol position in slot and subcarrier position in PRB of corresponding CSI-RS resource
  • nrofPorts the number of CSI-RS ports that the CSI-RS resource contains
  • powerControlOffset The ratio between PDSCH EPRE (Energy Per RE) and NZP CSI-RS EPRE
  • powerControlOffsetSS ratio between SS / PBCH block EPRE and NZP CSI-RS EPRE
  • the number of CSI-RS ports of one of ⁇ 1, 2, 4, 8, 12, 16, 24, 32 ⁇ may be set in one CSI-RS resource. Different configuration degrees of freedom may be supported according to the number of CSI-RS ports configured in the CSI-RS resource.
  • Table 1 shows the CSI-RS density, CDM length and type, and the frequency axis of the CSI-RS component RE pattern that can be set according to the number of NR CSI-RS ports (X). And the time axis starting position ( ), The frequency axis RE number (k ') and the time axis RE number (l') of the CSI-RS component RE pattern.
  • the CSI-RS component RE pattern may be a basic unit constituting a CSI-RS resource.
  • the CSI-RS component RE pattern may be configured of YZ REs.
  • FIG. 6 illustrates an example of designation of a CSI-RS RE by CSI-RS resource mapping according to an embodiment of the present disclosure.
  • the base station can designate the frequency axis RE position by (7-05). At this time, if the base station specifies the frequency axis subcarrier position by '2' of (7-05) and the position of the time axis OFDM symbol (symbol) by '9' of (7-15), It can be seen that the CSI-RS is transmitted at the RE position (7-25) in the corresponding PRB (7-20).
  • NR may support different frequency axis setting degrees of freedom according to the number of CSI-RS ports configured in the CSI-RS resource.
  • the CSI-RS RE location can be specified without restriction of subcarriers in the Physical Resource Block (PRB), and the CSI-RS RE location is specified by a 12-bit bitmap. 6, 6-00.
  • PRB Physical Resource Block
  • the CSI-RS RE location can be specified for every two subcarriers in the PRB, and 6
  • the CSI-RS RE location may be designated by the bitmap of the bit (6-05).
  • the CSI-RS RE location can be specified for every four subcarriers in the PRB, and the CSI-RS RE location can be specified by a 3-bit bitmap. (6-10).
  • time axis RE position can be specified by a bitmap of 14 bits in total.
  • the length of the bitmap may be changed as in the frequency position designation according to the Z value of Table 1, but since the principle is similar to the above description, redundant description will be omitted below.
  • FIG. 7 is a diagram illustrating a relationship between channel state information report, CSI reference resource and CSI-RS resource.
  • the terminal may report channel state information based on one or a plurality of PRBs designated as CSI reference resources to the base station.
  • the CSI reference resource may indicate a PRB for a frequency band corresponding to a wideband or subband CQI value to be reported.
  • the frequency band may be a frequency band for reporting the channel state information mentioned above.
  • the CSI reference resource 7-10 may indicate one downlink slot corresponding to the following equation when channel state information reporting is performed in the uplink slot n (7-5).
  • a constant DL and UL may be a value indicating how many times the downlink and uplink subcarrier interval is 15 kHz, respectively.
  • Equation 1 For aperiodic reporting,
  • the terminal when the terminal reports the channel status information, the channel measured based on the CSI-RS resource (7-15) at the same time or the same time as the CSI reference resource corresponding to the corresponding channel status information report Status information can be reported.
  • the base station schedules the PDSCH to the terminal in consideration of the channel state information and the size of data to be transmitted to the terminal, and then assigns the scheduling information to the terminal through downlink control information (DCI).
  • DCI downlink control information
  • the DCI notified may include the number of layers in the scheduled downlink data and the position on the frequency-time axis.
  • scheduling information for the PDSCH may be delivered from the base station to the terminal through the DCI.
  • the UE may monitor the DCI format for fallback and the DCI format for non-fallback for the PUSCH or PDSCH.
  • the preparedness DCI format may include a predefined fixed field between the base station and the terminal.
  • the non-preparative DCI format may include a configurable field.
  • DCI may be transmitted through PDCCH through channel coding and modulation.
  • Cyclic redundancy check (CRC) may be attached to the DCI message payload.
  • the CRC may be scrambled with a Radio Network Temporary Identifier (RNTI) corresponding to the identity of the terminal.
  • RNTI Radio Network Temporary Identifier
  • Different RNTIs may be used depending on the purpose of the DCI message, for example, UE-specific data transmission, power control command or random access response. That is, the RNTI may be transmitted in a CRC calculation process without being explicitly transmitted.
  • the UE may check the CRC using the assigned RNTI. If the CRC check result is correct, the terminal may know that the corresponding message is transmitted to the terminal itself.
  • the DCI scheduling the PDSCH for the system information (SI) may be scrambled with the SI-RNTI.
  • DCI scheduling PDSCH for a random access response (RAR) message may be scrambled with RA-RNTI.
  • the DCI scheduling the PDSCH for the paging message may be scrambled with the P-RNTI.
  • the DCI for notifying the Slot Format Indicator (SFI) may be scrambled with the SFI-RNTI.
  • the DCI for notifying transmit power control (TPC) may be scrambled with the TPC-RNTI.
  • DCI scheduling UE-specific PDSCH or PUSCH may be scrambled with C-RNTI (Cell RNTI).
  • DCI format 1_0 may be used as a countermeasure DCI for scheduling PDSCH, where CRC may be scrambled with C-RNTI.
  • the DCI format 1_0 in which the CRC is scrambled with the C-RNTI may include, for example, the following information.
  • DCI format 1_1 may be used as a non-preparative DCI scheduling a PDSCH, where the CRC may be scrambled with C-RNTI.
  • DCI format 1_1 in which CRC is scrambled with C-RNTI may include, for example, the following information.
  • the bandwidth part indicator of Table 3 may refer to an indicator indicating a bandwidth part to which the scheduled data belongs. If the terminal does not support the change of the bandwidth part (bandwidth part) to the DCI (indicator) can be ignored.
  • the bandwidth part mapping corresponding to the number of bits for the corresponding indicator and the indicator value may be set through higher layer signaling, that is, RRC (Radio Resource Control) signaling.
  • the base station may notify the terminal of a demodulation reference signal (DMRS) port for scheduled data decoding.
  • DMRS demodulation reference signal
  • a code point of an antenna ports item on DCI DMRS ports corresponding to each may be as shown in Table 4 below.
  • the terminal may expect that there are PDSCH layers corresponding to the number of DMRS ports corresponding to the codepoint of the antenna ports item on the DCI, and may decode data of each layer based on the DMRS.
  • the UE In order for the UE to successfully receive a PDSCH having multiple layers, at least the same number of receive antenna ports as the number of layers may be required. If the base station knows the maximum number of layers that can be received by the terminal or the number of receive antennas by the terminal, the maximum number of layers of the PDSCH can be determined accordingly. According to some embodiments, before the UE completes the establishment of the RRC connection / reconnection, the UE can receive the maximum number of layers through UE capability report. Can be reported to the base station.
  • the number of layers of the PDSCH to be received by the UE is notified to the DCI, which can be changed dynamically. Therefore, in order for the UE to successfully receive the PDSCH, the UE reports to the base station when reporting the capability of the UE.
  • the number of receiving antenna ports corresponding to the number of layers should always be activated.
  • a terminal may need to support at least four receiving antenna ports in a specific band, and the band may be a band designated in a specific embodiment, such as the NR bands agreed by the 3GPP RAN standardization conference, n7, n38, n41, n77 , n78, n79, and the like. If a terminal using a corresponding band always operates with at least four receiving antenna ports, unnecessary terminal power may be consumed unnecessarily.
  • the base station If the user wants to deactivate some of the terminal receiving antenna ports due to a decrease in terminal power consumption, the base station notifies some of the terminal receiving antenna ports of the terminal and if necessary, the base station reactivates the deactivated receiving antenna ports.
  • the terminal may operate according to these notifications. The above operation may also be applied to the band and the minimum number of receiving antenna ports not mentioned in the present disclosure.
  • the base station and the terminal channel state information (CSI: channel state information) from the base station to the terminal for each of the receiving antenna port state of the terminal, that is, in each case the terminal can deactivate or activate some of the receiving antenna ports You can configure the process of measuring and reporting.
  • This channel state may be referred to when the base station determines when to deactivate or activate some of the terminal receiving antenna ports.
  • the above-described series of operations related to deactivation / activation of a part of the terminal receiving antenna port is different from a series of processes related to deactivation / activation of a part of the base station transmitting antenna port.
  • the base station may make a decision to deactivate / activate some of its transmit antenna ports by itself.
  • the UE cannot make a decision to deactivate / activate some of its reception antennas because the number of PDSCH layers, that is, the minimum number of reception antennas required for PDSCH reception is dynamically determined through the DCI. Therefore, the terminal needs an explicit or implicit deactivation / activation notification from the base station.
  • a series of operations related to deactivation / activation of some of the terminal reception antenna ports is different from a series of processes related to deactivation / activation of a portion of the terminal reception antenna ports.
  • the channel state from each of the terminal transmitting antenna ports to the base station receiving antenna port may be measured by the base station through a sounding reference symbol (SRS) reference signal transmitted by the terminal.
  • SRS sounding reference symbol
  • a method by which the base station can report the channel state information of the terminal from the base station for each of the receiving antenna port states of the terminal is not established in the current 5G NR standard.
  • the base station and the terminal may know the minimum number of terminal receive antenna ports for each available band. Information on the minimum number of terminal reception antenna ports per band may be recorded in hardware, software, or a combination of hardware and software of the base station and the terminal.
  • the terminal knows the minimum number of terminal receiving antenna ports per band, the terminal has its own number of receiving antenna ports (hereinafter, ) And the minimum number of terminal receive antenna ports per band (hereafter , Superscript b indicates the index of the band) and only uses for the initial access process with the base station for the band b that satisfies the following equation, or receives control information and data from the base station after the initial access, It can be used for carrier switching, or carrier aggregation.
  • the band may be one or more.
  • the initial access process involves frequency tuning to available bands in the band as in current 5G NR systems, receiving signals and measuring signal strength, such as synchronization signal blocks (SSBs) from one or more base stations in the band, and the base stations to be connected. Selection and a process of receiving a random access response (RAR) and an RRC message from a corresponding base station.
  • SSBs synchronization signal blocks
  • the minimum number of terminal receiving antenna ports per band in the first embodiment may be four ports, and the corresponding band may include n7, n38, n41, n77, n78, and n79, which are NR bands.
  • the number of receiving antenna ports of the terminal If is 4 or more, the band can be used for initial access, control information and data reception after initial access, carrier switching, or carrier aggregation.
  • the base station determines that the base station of the terminal is because of a decrease in power consumption Some of the receive antenna ports may be deactivated, or all or some of the deactivated ports may be activated. To this end, the base station may consider whether the terminal can change the reception antenna port deactivation / activation state.
  • the following embodiment discloses a method for a terminal to report whether its reception antenna deactivation / activation state can be changed to a base station.
  • the UE Whether or not the UE supports the reception antenna port deactivation / activation state change, one or more of a RACH preamble, an RRC connection request, and a UE capability report message before the establishment of the RRC connection / reconnection is completed. It can be mounted on and reported to the base station.
  • the report may be a report on a band used through the first embodiment.
  • the base station does not instruct the corresponding terminal to change the receiving antenna port deactivation / activation state or different receiving antenna port deactivation / activation.
  • FIG. 8 is a diagram illustrating examples of a reporting method of whether a reception antenna port deactivation / activation state of a terminal can be changed according to an embodiment of the present disclosure.
  • the terminal may report to the base station whether the terminal itself supports switching between two receive antenna port deactivation / activation state (hereinafter, Rx mode).
  • the 4Rx mode (8-01) which is the state in which all the receiving antenna ports are activated
  • the 2Rx mode (8- 02) is taken into account.
  • the UE may report whether to support switching between Rx modes to the base station through a method of independent 1 bit (1: switching support, 0: switching not supported) or multiplexing with other information.
  • a receiving antenna port deactivated in 2Rx mode may be previously reserved between the base station and the terminal. If the terminal does not support switching between Rx modes, it may be assumed that all receiving antenna ports mounted on the terminal are always activated.
  • the second example (8-10) of FIG. 8 is an example of one combination of combinations of Rx modes possible when there are three or more Rx modes of the UE. For example, if the terminal has 4 receiving antenna ports, 4Rx mode (8-11) with all 4 ports enabled, 2Rx mode (8-12) with 2 ports enabled, and 1Rx mode (8 with 1 port enabled) -13) A total of three Rx modes can be used. And the UE may report to the base station in a manner as shown in Table 5 whether to support the switching between each Rx mode.
  • the terminal may operate in a state in which all receiving antenna ports (four ports in the table) are basically activated. Therefore, the UE can basically support the switching from the 4Rx mode and the other Rx mode to the 4Rx mode, and the third bit can be omitted.
  • the example of the reporting method for the four terminal receiving antenna ports and the three Rx modes may be similarly applied to the number of other receiving antenna ports and the Rx mode.
  • the relationship between the bit position in the bitmap and the Rx mode may vary according to embodiments.
  • switching between Rx modes of the terminal may be possible only in certain cases. For example, for the 4Rx mode, the 2Rx mode, and the 1Rx mode mentioned in the second example (8-10) of FIG. 8, it may be possible to switch from the 4Rx mode to the 2Rx mode but not to the 1Rx mode in the 4Rx mode. In this case, the UE may report to the base station which Rx mode switching is supported in the manner shown in Table 6.
  • Table 6 shows whether the terminal supports switching from Rx mode corresponding to a specific row to Rx mode corresponding to a specific column.
  • An example of a reporting method according to Table 6 may be similarly applied to other antenna port numbers and Rx mode.
  • ⁇ Embodiment 2-4 Method 4 for Reporting Whether the Receiving Antenna Port Deactivation / Activation State of the UE Can Change
  • the third example 8-8 of FIG. 8 illustrates an example in which the UE reports to the base station whether the activation / deactivation state change (8-21) of the reception antenna port is possible.
  • the terminal may report at least one of the total number of antennas, the number of antennas that can be activated / deactivated and the number of antennas that cannot be activated / deactivated.
  • the terminal may report a bitmap as shown in Table 7 to the base station.
  • the terminal may report whether the activation / deactivation state of the terminal reception antenna port can be changed to the base station. Whether the deactivation / activation state can be changed for the terminal reception antenna port described above is installed in one or more of the RACH preamble, the RRC connection request, and the UE capability report message before the establishment of the RRC connection / reconnection is completed. And may be reported to the base station.
  • the base station may notify the terminal so that the terminal uses one of the Rx mode for data reception, or the terminal can deactivate or activate one or more of the reception antenna ports of the terminal.
  • the base station may consider whether the Rx mode can be changed when the Rx mode notification for data reception of the terminal.
  • the base station may use higher layer signaling such as RRC signaling.
  • the base station may notify the terminal whether the terminal reception antenna port deactivation / activation state is changed by the method of one of the examples described below through the RRC connection establishment or reset notification 9-05.
  • the base station enumerates enumerated values of possible Rx modes of the terminal, for example, ⁇ 1Rx mode, 2Rx mode, 4Rx mode, 8Rx mode,... ⁇ , ⁇ low, medium,...
  • the terminal may be notified of one or a set of values named in the highest ⁇ , ⁇ partial, full ⁇ , or other technical scheme.
  • the base station may notify the terminal of the number of activated antenna ports, the number of deactivated antenna ports, or the number of enabled / disabled receive antenna ports of the terminal. According to an embodiment of the present disclosure, the base station may notify the terminal of the number of activated receiving antenna ports or the number of deactivated receiving antenna ports of the terminal by using a bitmap as shown in Table 8.
  • bit 1 may indicate that the receive antenna port is deactivated and 0 may mean that the antenna port is activated.
  • the base station may notify whether to change the Rx mode for data reception of the terminal to semi-static or dynamic through an RRC connection establishment or reset notification. . If the base station notifies to change the Rx mode semi-statically, it may notify together of one of the listed values of the Rx mode described above. In addition, when the base station notifies to dynamically change the Rx mode of the terminal, the following 3-2 embodiment may be used together. Also through a method other than the above-described example, the base station may notify whether the terminal Rx mode is changed through the RRC connection establishment or reset notification.
  • the terminal may inform the base station that the RRC connection establishment / reconfiguration notification including the Rx mode information for data reception has been normally received, 9-10.
  • the UE may maintain the reception antenna port deactivation / activation state (hereinafter referred to as Rx mode) configuration set to RRC until the RRC reset.
  • ⁇ Embodiment 3-2 UE Rx mode notification method of base station through MAC CE or DCI>
  • the base station may use a MAC (Media Access Control Control Element) or DCI (Downlink Control Information).
  • the base station via the MAC CE or DCI, may notify the terminal whether or not the terminal changes the Rx mode in one of the following examples.
  • the base station indicates index 0/1/2 /... Indicating a possible Rx mode of the terminal. One or a set of values may be notified to the terminal. Index 0/1/2 /... Each of 1Rx mode, 2Rx mode, 4Rx mode,... Mentioned in one embodiment of the present disclosure. Can point to According to an embodiment of the present disclosure, the base station may notify the terminal of a set of possible Rx modes to the RRC, and may notify the terminal of one of the sets of Rx modes to the MAC CE / DCI. In addition, the base station may notify the terminal of the set of possible Rx mode to the MAC CE, and notify the terminal of the Rx mode of the set in the DCI.
  • the setting of the Rx mode for the terminal data reception may be performed in a similar or different manner described with reference to the embodiment 3-1 through a dedicated field containing only the corresponding setting. Can be notified.
  • the setting of the deactivation / activation state for the terminal receiving antenna port may be multiplexed to an existing field on the MAC CE or DCI and notified to the terminal.
  • a bandwidth part (BWP) setting and a terminal are performed through a 'bandwidth part indicator' field on the DCI.
  • Rx mode of the configuration together, the terminal may be notified.
  • the terminal may be notified.
  • Example 3-3 UE Rx mode notification method for each bandwidth>
  • the UE may independently set the Rx mode for data reception for each bandwidth (component carrier (CC), bandwidth part (BWP), etc.).
  • bandwidth component carrier (CC), bandwidth part (BWP), etc.
  • FIG. 10 is a diagram illustrating Rx mode setting for each bandwidth of a terminal.
  • the base station instructs, to the terminal, one Rx mode 10-06 for the entire terminal bandwidth 10-05 according to the same method as in the embodiment 3-1. can do.
  • the base station performs an independent Rx mode (10-11, 10-16) for each of the CC (10-10, 10-15) of the terminal through higher layer signaling, such as RRC Can be directed.
  • the base station through higher layer signaling such as RRC, for each BWP (10-20, 10-25, 10-30) in the CC of the terminal, independent Rx mode (10-21, 10-26, 10-31) may be indicated.
  • RRC higher layer signaling
  • the method of indicating the Rx mode according to each CC or BWP may be similar to the method described with reference to the embodiment 3-1.
  • the Rx mode may be changed by changing the CC or BWP used by the UE through DCI, MAC CE, or the like.
  • the DCI may be a BWP indicator.
  • FIG. 11 is a diagram illustrating setting of Rx mode for each slot for data reception by a terminal.
  • the base station performs different Rx modes (11-02, 11-04, 11-09, 11-09, 11-09, 11-09, 11-09, 11-09, 11-09, 11-09, 11-09, 11-09, 11-09, 11-09) through higher layer signaling such as RRC. 11-06, 11-10).
  • the Rx mode setting for each slot may be notified through a method of indicating the number of slots and an offset in which a specific Rx mode is maintained.
  • the specific slot may be designated as flexible (11-06), and the Rx mode may be dynamically determined through MAC CE or DCI as in the embodiment 3-2 (11-20).
  • the slot may be used for switching time (11-21) required for changing the Rx mode.
  • the base station may use the channel state information for each Rx mode in determining when to change the Rx mode for data reception of the terminal.
  • the base station configures a CSI-RS resource to be transmitted, and one or more Rx modes in which the terminal receives the CSI-RS resource, or channel state information such as CRI, RI, and CQI.
  • One or more reference Rx modes can be configured.
  • the terminal may measure and report the channel state according to the CSI-RS resource reception Rx mode of the base station or the reference Rx mode setting for reporting the channel state information.
  • the base station may explicitly indicate the Rx mode for receiving the CSI-RS resource of the terminal or the reference Rx mode for reporting the channel state information.
  • the base station may include an Rx mode in setting a framework related to channel state measurement and channel state information reporting of the terminal illustrated in FIG. 6. Framework settings related to channel status measurement and channel status reporting may be indicated through RRC.
  • Embodiments 4-1 to 4-6 described below are examples of how the base station configures each component on the channel state information framework in order to obtain channel state information for a specific Rx mode.
  • FIG. 12 is a diagram illustrating a method in which a base station instructs a user equipment through a CSI-RS resource set (12-01, 12-10) on a channel state information framework in which Rx mode the terminal should receive a CSI-RS resource. An example of this is shown.
  • the terminal may select 12-03, 12-04 or 12-12, 12-13, respectively, CSI-RS resources belonging to the CSI-RS resource set, 12-02 or 12-11.
  • the UE may be instructed through the RRC the CSI-RS resource set configuration.
  • the terminal may maintain the corresponding configuration until the RRC resetting time point.
  • the base station may set different Rx modes for each CSI-RS resource set (12-02 and 12-11). After configuring the Rx mode for each CSI-RS resource set, the UE may receive the CSI-RS belonging to the corresponding CSI-RS resource set and measure the channel state of the configured Rx mode. The UE may report the optimal Rx mode to the base station by reporting an index for the CSI-RS resource set corresponding to the Rx mode having the optimal channel state among the measured channel states for each Rx mode. For reporting the CSI-RS resource set index, the base station may add the CSI-RS resource set index to the CSI quantity to be reported when setting the CSI report.
  • the base station may map different transmission beams or reception beams to each CSI-RS resource belonging to one or more CSI-RS resource sets.
  • CSI-RS resource set # 1 (12-01) set to K Rx mode CSI-RS resource # 1 (12-05),... Different transmission beams may be mapped to the CSI-RS resource #N 12-06.
  • the terminal After receiving each CSI-RS resource in the Rx mode specified in the CSI-RS resource set configuration, the terminal may measure a channel state for each of the received CSI-RS resources.
  • a CRI CSI-RS Resource Indicator
  • the base station can find out an optimal transmit / receive beam for each Rx mode through the CRI for each reported CSI-RS resource set.
  • the indication on which Rx mode the UE should receive the CSI-RS resource is indicated through the CSI-RS resource setting included in the CSI-RS resource set on the channel state information framework. Can be.
  • FIG. 13 illustrates an example in which Rx modes 13-01 and 13-02 of a UE are indicated in each CSI-RS resource configuration.
  • the base station may indicate different Rx modes for each CSI-RS resource configuration, and some or all of the CSI-RS resource configurations may indicate the same Rx mode.
  • the UE may change its Rx mode to receive each CSI-RS resource in the Rx mode indicated in the corresponding resource configuration.
  • the UE may determine the time to change the Rx mode for receiving the CSI-RS resource in consideration of the time required to change the Rx mode.
  • the UE may be instructed through the RRC the CSI-RS resource configuration.
  • the terminal may maintain the corresponding configuration until the RRC resetting time point.
  • the base station may map 13-10 different transmit / receive beams to each CSI-RS resource.
  • the base station may map 13-20 CSI-RS resources to be received by the UE in one or more different Rx modes to one transmit / receive beam.
  • the terminal may measure a channel state for each of the received CSI-RS resources after receiving each CSI-RS resource according to a specified transmission / reception beam setting and an Rx mode setting.
  • the terminal may report the CRI indicating the CSI-RS resource corresponding to the optimal channel state to the base station. Since the base station can know the optimal transmission / reception beam and the optimal Rx mode through the reported CRI, an additional CSI quantity is not required for the optimal Rx mode reporting in this embodiment.
  • an indication of which Rx mode the UE receives the CSI-RS resource may be indicated through the CSI resource setting on the channel state information framework.
  • the setting may be commonly applied to each resource set belonging to the resource setting and each resource in the resource set.
  • the UE may change its Rx mode to receive each CSI-RS resource belonging to the CSI resource setting in the Rx mode indicated by the corresponding resource setting.
  • the UE may determine the time to change the Rx mode for receiving the CSI-RS resource in consideration of the time required to change the Rx mode.
  • the terminal may be instructed through the RRC the CSI resource setting configuration.
  • the terminal may maintain the corresponding configuration until the RRC resetting time point.
  • the UE may indicate not to indicate in which Rx mode to receive the CSI-RS resource, but may indicate whether to report the CSI measured for which Rx mode to the base station.
  • the UE can more flexibly set the Rx mode for receiving the CSI-RS resource.
  • the indication of whether the UE reports the measured channel state information for which Rx mode may be indicated through the CSI report setting on the channel state information framework.
  • one report setting may be linked with one or more resource settings, as described with reference to FIG. 5. Therefore, the report setting may be linked with the resource set included in the resource setting and the resource included in the resource set.
  • the UE may set its Rx mode to M Rx mode for reception of a CSI-RS resource linked to the report setting as shown in FIG. 14.
  • the UE may measure the channel state for the M Rx mode and all smaller Rx modes from the CSI-RS resource received in the M Rx mode.
  • each of the linked CSI-RS resources (14-21, 14-22).
  • the UE may set the reception antenna port deactivation / activation state to M Rx mode.
  • the UE may determine the time to change the Rx mode for receiving the CSI-RS resource in consideration of the time required to change the Rx mode.
  • the M Rx mode may refer to the K Rx mode and all possible Rx modes larger than this, and all possible Rx modes may be the Rx mode mentioned in the embodiment 2-2 or 2-3.
  • the terminal may measure the channel state for the K Rx mode smaller than M through the CSI-RS resource received in the M Rx mode and report to the base station according to the report setting.
  • the base station may indicate the CSI report setting setting to the terminal through the RRC.
  • the terminal may maintain the corresponding configuration until the RRC resetting time point.
  • the base station may set a plurality of Rx modes in setting the CSI report setting. For example, if the report setting is set to report channel state information for K Rx mode and K + 1 Rx mode, the connected CSI-RS resource may be M Rx mode (M may indicate all possible Rx modes larger than K + 1). ) Can be received.
  • the UE measures channel states for K Rx mode and K + 1 Rx mode smaller than M through the CSI-RS resource received in M Rx mode, and then sends channel state information for the two Rx modes to the base station according to the report setting. You can report it.
  • an indication on which Rx mode the UE measures the channel state may be multiplexed with the above-described channel state framework configuration and delivered to the UE.
  • the base station sets the transmission characteristics in the CSI resource setting or the CSI report setting, such as aperiodic, semi-persistent, and periodic configuration, as shown in Table 9 in Rx mode. It can be multiplexed with and delivered to the terminal.
  • the UE may report channel state information for the 2Rx mode periodically.
  • the multiplexing relationship as shown in Table 9 may be promised in advance between the base station and the terminal, or may be delivered to the terminal through higher layer signaling such as RRC.
  • Table 9 is merely an example and may be similarly applied to a multiplexing relationship using other channel state information framework setting values.
  • semi-persistent CSI report and aperiodic through a physical uplink shared channel (PUSCH) and aperiodic ) CSI report may be triggered through the CSI request field 15-01 of DCI format 0_1.
  • PUSCH physical uplink shared channel
  • the CSI request field may be mapped to a trigger state 15-10 or 15-11.
  • the trigger state may be associated with lists 15-20 and 15-21 for one or more CSI report settings.
  • the length of the CSI request field, a linkage relationship between the trigger state, and the CSI report setting may be set through higher layer signaling such as RRC.
  • the base station may set the Rx mode corresponding to each trigger state of the CSI report (15-10, 15-11).
  • the Rx mode for receiving the CSI-RS resource may be set similarly to the method in which the Rx mode is set in the fourth embodiment.
  • the Rx mode for reporting the channel state may be set in the same manner as the Rx mode corresponding to the trigger state.
  • the base station may set a plurality of Rx modes in the CSI trigger state. For example, when the K Rx mode and the K + 1 Rx mode are configured in the CSI trigger state, the UE may select each of the connected CSI-RS resource sets and the CSI-RS resources connected thereto in an M Rx mode (M is K + 1). Can be indicated in all possible large Rx modes).
  • the UE measures the channel state for K Rx mode and K + 1 Rx mode smaller than M through the CSI-RS resource received in M Rx mode, respectively and according to the CSI trigger state, the channel state for the two Rx modes. Information can be reported to the base station.
  • the Rx mode for receiving the CSI-RS resource of the UE or the reference Rx mode for reporting the channel state information may be implicitly set.
  • the Rx mode for receiving the CSI-RS resource of the terminal may be set to be the same as the terminal Rx mode set to the RRC. The setting may be maintained until the RRC reset.
  • the Rx mode set in the UE at the time of receiving the CSI-RS resource may be used as the Rx mode for receiving the CSI-RS resource or measuring the channel state as shown in the following embodiments 4-1 and 4-2.
  • the Rx mode for receiving the CSI-RS resource is set to be the same as a predetermined Rx mode in the UE. Can be.
  • the UE when the UE receives a CSI-RS resource within a time interval 16-05 set to K Rx mode, the UE may receive the corresponding CSI-RS resource in K Rx mode (16-10). have. If the terminal receives a CSI-RS resource in a time interval (for example, K + 1 Rx mode interval 16-15 or K-1 Rx mode interval 16-25) set to another Rx mode, The Rx mode for receiving the corresponding CSI-RS resource may be set (16-20 or 16-30) in the same manner as the Rx mode (K + 1 Rx mode or K-1 Rx mode) for the set time interval. The UE measures the channel state information for the Rx mode through the CSI-RS resource received in the Rx mode, and reports the corresponding channel state information to the base station according to the report setting set by the base station (16-35, 16-40, 16-45).
  • the terminal may report the terminal Rx mode information of the channel state information measured to the base station together.
  • the terminal may use a fixed Rx mode for receiving CSI-RS resources.
  • the terminal may fix the Rx mode for receiving the CSI-RS resource to the K Rx mode (17-15, 17-35), and the K Rx mode is reported by the terminal in the second embodiment. It may be the maximum Rx mode.
  • the UE may measure channel states for the K Rx mode and all smaller Rx modes from the CSI-RS resource received in the K Rx mode (17-10, 17-30).
  • the UE may change its Rx mode before the CSI-RS resource reception time in order to receive the CSI-RS resource in the aforementioned Rx mode. Therefore, the UE, in the K-1 Rx mode (17-05) or K-2 Rx mode (17-25), or other Rx mode, before the slot is configured to receive the CSI-RS resource, K Rx mode (17 -15, 17-35) can be performed.
  • the UE may determine the start time of changing the Rx mode for receiving the CSI-RS resource in consideration of the time required to change the Rx mode.
  • the terminal In the changed K Rx mode (17-15, 17-35), after the terminal receives the CSI-RS resource, the terminal is ⁇ 1,. It is possible to measure the channel state for both K ⁇ Rx mode (17-40, 17-45) and report the measured channel state information.
  • the terminal When the terminal measures the channel state for multiple Rx mode, the terminal can report each channel state information to the base station independently, or report all the channel state information to the base station at once. It may be.
  • the terminal may independently set the Rx mode for data reception for each bandwidth (CC, BWP, etc.).
  • the Rx mode for receiving the corresponding resource may be set to be the same as the Rx mode for receiving the data.
  • the Rx mode for receiving the corresponding resource may be implicitly set according to the band in which the CSI-RS resource is received.
  • the base station can independently set the channel state information framework for CSI-RS resource transmission and channel state reporting for each band. Information on the band set in the framework may be included in the CSI resource setting.
  • the Rx mode for reporting the channel state information may be set based on the Rx mode for receiving the CSI-RS resource, or may be set based on the Rx mode for the CSI reference resource instead of the CSI-RS resource.
  • the UE is set to the 4 Rx mode during the period in which the UE belongs to the CSI reference resource 18-15 corresponding to the first channel state information report 18-05, the UE is in the 4 Rx mode.
  • the channel state information on the CSI reference resource 18-15 may be reported at the first channel state information report 18-05.
  • the terminal is set to the 2 Rx mode during the period that the terminal belongs to the CSI reference resource (18-20) corresponding to the second channel state information report (18-10)
  • the terminal is a CSI reference resource (in the 2 Rx mode) 18-20) can be reported when reporting the second channel status information (18-10).
  • the method of selecting a reference CSI-RS resource for measuring channel state information may be one or more.
  • the second CSI-RS resource (18-10) that is, the reference CSI-RS resource for reporting on the 2Rx mode may be received in the CSI-RS resource (18-25) or 2Rx mode received in the 4Rx mode. It may be a received CSI-RS resource 18-30.
  • the terminal is based on the same CSI-RS resource (18-30) or the most recent CSI-RS resource (18-25) as the Rx mode for reporting the channel state information, from the corresponding CSI-RS resource Channel state information for 2Rx mode may be measured.
  • the most recent CSI-RS resource may be located at the same time or earlier than the CSI reference resource 18-20 in the time domain.
  • the first CSI-RS resource for reporting the first channel state information (18-05), that is, the 4Rx mode is only the CSI-RS resource (18-25) received in the 4Rx mode.
  • Channel status information can be measured based on RS resources. Since the CSI-RS resource (18-30) received in the 2Rx mode cannot obtain channel state information for the 4Rx mode, this cannot be used as a reference.
  • FIG. 19A is a diagram for describing an operation according to a first example in which the first embodiment and the embodiments 2-1 to 2-4 are combined.
  • a reception band of a terminal may be selected, and Rx The mode reporting operation may be performed.
  • the terminal may select a band that satisfies the minimum number of terminal reception antennas.
  • the terminal may receive control information and data for initial access in the selected band.
  • the terminal may use only a band that satisfies the minimum number of terminal reception antenna port conditions as a band for receiving control information and data from the base station during initial access.
  • the terminal may report whether the reception antenna port deactivation / activation state (hereinafter, Rx mode) for the band used through the first embodiment can be changed.
  • Rx mode reception antenna port deactivation / activation state
  • step S1917 the base station sets the Rx mode for receiving data of the terminal and the Rx mode for receiving CSI-RS resource or channel status based on whether the Rx mode can be changed reported by the terminal, and then the first embodiment.
  • the settings can be informed by the band used.
  • step S1919 the terminal may determine whether the antenna is active based on the Rx mode.
  • the combination of data, CSI-RS, and Rx mode setting method for channel state reporting may include the following second, third, and fourth examples.
  • 19B is a diagram for describing an operation according to a second example in which the embodiments 3-4, 5-1, 5-2, and 5-4 are combined.
  • an Rx mode for each slot for data reception may be set, and an implicit Rx mode for CSI-RS resource reception may be set.
  • the base station determines the Rx mode of the terminal for each slot according to the embodiment 3-4.
  • the Rx mode for setting the CSI-RS resource or reporting the CSI-RS resource is implicitly set according to the fifth embodiment or the fifth embodiment.
  • step S1921 the terminal selects a reception band and reports whether the Rx mode can be changed in the selected band.
  • the UE may receive a slot-by-slot Rx mode for receiving data from the base station from the base station.
  • the UE may determine whether the slot at least one of the CSI-RS reception time and the CSI reference resource time is the flexible slot.
  • the UE may implicitly set the Rx mode in the RS reception / CSI reporting based on the confirmed result.
  • the terminal may implicitly set the Rx mode when reporting the RS reception / CSI according to embodiment 5-2.
  • the Rx mode for receiving the corresponding CSI-RS resource / reporting the channel state information is It may be set according to the fifth embodiment.
  • the terminal may implicitly set the Rx mode when reporting the RS reception / CSI according to the 5-1 or 5-4 embodiment.
  • the terminal may determine whether the antenna is active based on the Rx mode.
  • the base station and the terminal are configured according to the second example, since the channel state information framework does not need to be set independently for each different Rx mode, the overhead for setting and notification of the channel state information framework is lower than that of the other example. have.
  • the Rx mode for data reception of the UE may be indicated by higher layer signaling except for a specific slot.
  • FIG. 19C is a diagram for describing an operation according to a third example, in which a third embodiment and a third embodiment are combined.
  • an Rx mode for each BWP for data reception may be set, and a CSI framework for each BWP may be set.
  • step S1931 the terminal selects a reception band and may report whether the Rx mode can be changed in the selected band.
  • the base station may implicitly set the Rx mode for receiving CSI-RS resources and channel state information according to the fifth embodiment.
  • the terminal may receive the Rx mode for each BWP for the data reception of the terminal from the base station.
  • the base station may determine the Rx mode for data reception of the terminal based on the channel state report reported by the terminal according to the set channel state information framework, and may notify the terminal of the corresponding Rx mode.
  • the base station may set the Rx mode for data reception of the terminal for each BWP according to the third embodiment.
  • the terminal may receive a BWP indicator for changing the BWP from the base station.
  • the terminal may change the BWP based on the BWP indicator, and change the Rx mode according to the Rx mode setting.
  • the terminal may determine whether the antenna is active based on the Rx mode.
  • the base station and the terminal is configured according to the corresponding example, since the BWP indicator already supported by the current 5G NR standard can notify the Rx mode for data reception of the terminal, no additional overhead for notification of the Rx mode change is necessary. There is no advantage. In order to receive UE data and receive CSI-RS resources, different BWPs may be required for each Rx mode.
  • 19D is a diagram for describing an operation according to a fourth example, in which the third embodiment and the fourth embodiment are combined.
  • MAC-CE / DCI of the Rx mode for data reception may be notified, and may be set for each Rx mode of the CSI framework.
  • step S1941 the terminal selects a reception band and reports whether the Rx mode can be changed in the selected band.
  • the base station may set a channel state information framework for the Rx mode.
  • step S1945 the UE may acquire and report CSI for each Rx mode according to the configured channel state information framework.
  • the terminal may be notified of the Rx mode from the base station through MAC-CE / DCI for data reception of the terminal.
  • step S1949 the terminal may determine whether the antenna is active based on the Rx mode.
  • the terminal may select a reception band and perform an Rx mode report according to the first example.
  • the base station may notify the MAC-CE / DCI after determining the Rx mode for data reception of the terminal according to embodiment 3-2.
  • the Rx mode for receiving the CSI-RS resource and reporting the channel state information shows an example of explicitly setting according to the fourth embodiment.
  • the base station determines the Rx mode of the terminal based on the channel state information report result for each Rx mode (19-35) and may notify the corresponding Rx mode.
  • the base station and the terminal is configured according to the corresponding example, there is an advantage that the Rx mode can be freely changed in comparison with the second example, and there is an advantage that does not require additional frequency resources for each Rx mode for the third example.
  • the first embodiment of the band selection and the second embodiment of the terminal capability report may be combined with and operated in combination with each of the third, fourth, and fifth embodiments, and the third, fourth, and fifth embodiments.
  • the combination between the above embodiments is just an example, and the base station and the terminal may apply a combination between the other embodiments as necessary.
  • 20 is a flowchart illustrating an operation of a terminal according to an embodiment of the present disclosure.
  • the terminal may select a band for receiving control information and data during initial access.
  • the step of selecting a band for reception of control information / data during initial access may include performing frequency tuning, SSB reception, and the like, only for a band satisfying a minimum number of terminal receiving antenna ports for each band. It may include the step of performing the initial access.
  • step S2003 the terminal may report to the base station whether to support the activation of the antenna.
  • the step of reporting whether the antenna port is supported for activation to the base station, the UE capability report (UE capability report) including information on the maximum number of layers of the PDSCH that can be received by the terminal, the base station (UE capability report), Reporting may include.
  • the reporting of whether the antenna port is supported for activation to the base station may include reporting to the base station whether to support a switching operation between the plurality of antenna port activation modes. .
  • reporting whether the antenna port is supported for activation may include reporting the number of antenna ports that can be activated to the base station through a bitmap.
  • the reporting of whether the antenna port is supported for activation to the base station may include: in a first activation mode in which a predetermined number of antenna ports is activated, a number of antenna ports different from a predetermined number of antenna ports
  • the second activation mode which is a mode in which the number is activated, may include reporting to the base station whether the switching operation is supported.
  • reporting whether the antenna port supports activation may include reporting whether the antenna port supports activation / deactivation switching to the base station as a bitmap.
  • the terminal may receive antenna activation indication information from the base station.
  • the receiving of the antenna port activation indication information from the base station may include receiving the antenna port activation indication information from the base station through higher layer signaling.
  • receiving the antenna port activation indication information from the base station may include receiving the antenna port activation indication information from the base station through at least one of MAC CE and DCI.
  • receiving the antenna port activation indication information from the base station may include receiving the antenna port activation indication information from the base station for each bandwidth of the terminal.
  • receiving the antenna port activation indication information from the base station may include receiving the antenna port activation indication information from the base station for each slot of the terminal.
  • a method of operating a terminal includes: receiving an indication of an antenna port active mode for measuring a channel state, measuring a channel state with respect to an indicated antenna port active mode, and measuring a measured channel state The method may further include reporting to the base station.
  • the step of receiving the indication about the antenna port active mode to measure the channel state may include at least one CSI-RS resource mapped to at least one transmit / receive beam. Based on the RS resource set, the method may include receiving an indication from the base station about an antenna port active mode for measuring a channel state.
  • the step of receiving an indication about the antenna port active mode to measure the channel state may be based on at least one CSI-RS resource including information on a reference signal.
  • the method may include receiving an indication from a base station.
  • the step of receiving an indication about the antenna port active mode to measure the channel state may be based on a CSI resource setting including at least one CSI-RS resource set.
  • the method may include receiving an indication from the base station about an antenna port active mode for measuring a channel state.
  • the step of receiving an indication about an antenna port active mode for measuring a channel state may include measuring a channel state based on a CSI report setting including information on a CSI reporting method.
  • the method may include receiving an indication from the base station.
  • the step of receiving an indication of the antenna port active mode to measure the channel state may include a reference signal included in at least one of CSI resource setting and CSI report setting.
  • the method may include receiving an indication from the base station about an antenna port activation mode for measuring a channel state based on the transmission characteristics and whether the antenna port supports activation.
  • receiving the antenna port activation indication information from the base station may include: triggering the CSI report setting triggered according to a CSI request field mapped to a trigger state. And based on the antenna port activation indication information, may be received from the base station.
  • a method of operating a terminal includes measuring channel state information based on an antenna port activation mode at the time of receiving a CSI-RS from a base station, and measuring the channel state information and the channel state information The method may further include reporting the measured activation / deactivation configuration information of the antenna port to the base station.
  • the method may further include measuring channel state information for each of the at least one activation mode and reporting the measured channel state information to the base station based on the first predetermined activation mode.
  • step S2007 the terminal may determine whether to activate the antenna based on the received antenna activation indication information.
  • steps S2003 to S2007 may be performed through a processor included in the terminal.
  • terminal antenna capability in determining whether to activate each of the terminal antennas, terminal antenna capability, base station-to-terminal channel state (CSI: channel state information), and terminal power amount may be considered. have.
  • CSI channel state information
  • the terminal may report one or more of the above-described elements to the base station, and the base station combines the information reported from the terminal and information already known by the base station, The activation can be determined.
  • the base station may explicitly transmit the terminal antenna activation signal to the terminal through a downlink control channel.
  • the base station may implicitly inform the terminal of the terminal antenna activation information through a method such as component carrier, frequency and time resource allocation.
  • 21 is a diagram illustrating the structure of a terminal according to an embodiment of the present disclosure.
  • the terminal may include a processor 2101, a transceiver 2102, and a memory 2103.
  • a processor may be defined as a circuit or application specific integrated circuit or at least one processor.
  • the processor 2101 may control the overall operation of the terminal.
  • the processor 2101 may control a signal flow between blocks to perform an operation according to the above-described flowchart.
  • the processor 2101 can write and read data in the memory 2103.
  • the processor 2101 may perform the functions of the protocol stack required by the communication standard.
  • the processor 2101 may include at least one processor or a micro processor, or the processor 2101 may be part of a processor.
  • a part of the transceiver 2102 and the processor 2101 may be referred to as a communication processor (CP).
  • CP communication processor
  • the processor 2101 may control operations of the terminal described with reference to FIGS. 1 to 20.
  • the processor 2101 reports whether the antenna is supported for activation, receives antenna activation indication information from the base station, and receives the received antenna. Based on the activation indication information, it may be determined whether to activate the antenna.
  • the transceiver 2102 may perform functions for transmitting and receiving a signal through a wireless channel.
  • the transceiver 2102 may perform a baseband signal and bit string conversion function according to the physical layer standard of the system. For example, during data transmission, the transceiver 2102 may generate complex symbols by encoding and modulating a transmission bit string. In addition, when receiving data, the transceiver 2102 may restore the received bit string by demodulating and decoding the baseband signal. In addition, the transceiver 2102 may up-convert the baseband signal to an RF band signal and then transmit the antenna through the antenna, and downconvert the RF band signal received through the antenna to the baseband signal.
  • the transceiver 2102 may include a transmit filter, a receive filter, an amplifier, a mixer, an oscillator, a DAC, an ADC, and the like.
  • the transceiver 2102 may include a plurality of transmit and receive paths.
  • the transceiver 2102 may include at least one antenna array composed of a plurality of antenna elements.
  • the transceiver 2102 may be configured of a digital circuit and an analog circuit (eg, a radio frequency integrated circuit (RFIC)).
  • RFIC radio frequency integrated circuit
  • the digital circuit and the analog circuit can be implemented in one package.
  • the transceiver 2102 may include a plurality of RF chains.
  • the transceiver 2102 may transmit and receive a signal with a base station.
  • the signal may include control information and data.
  • the transceiver 2102 may be configured with an RF transmitter for up-converting and amplifying the frequency of the transmitted signal, and an RF receiver for low noise amplifying the received signal and down-converting the frequency of the received signal.
  • this is only an embodiment of the transceiver 2102, and the components of the transceiver 2102 are not limited to the RF transmitter and the RF receiver.
  • the transceiver 2102 may receive a signal through a wireless channel, output the signal to the processor 2001, and transmit a signal output from the processor 2101 through the wireless channel.
  • the memory 2103 may store data such as a basic program, an application program, and setting information for the operation of the terminal.
  • the memory 2103 may be composed of volatile memory, nonvolatile memory, or a combination of volatile memory and nonvolatile memory.
  • the memory 2103 may provide stored data according to a request of the processor 2101.
  • the memory 2103 may store at least one of information transmitted and received through the transceiver 2102 and information generated through the processor 2101.
  • 22 is a diagram illustrating a structure of a base station according to an embodiment of the present disclosure.
  • the base station may include a processor 2201, a transceiver 2202, and a memory 2203.
  • a processor may be defined as a circuit or application specific integrated circuit or at least one processor.
  • the processor 2201 may control overall operations of the base station.
  • the processor 2201 may control a signal flow between blocks to perform an operation according to the above-described flowchart.
  • the processor 2201 can write and read data in the memory 2203.
  • the processor 2201 may perform the functions of the protocol stack required by the communication standard.
  • the processor 2201 may include at least one processor or a micro processor, or the processor 2201 may be part of the processor.
  • a part of the transceiver unit 2202 and the processor 2201 may be referred to as a communication processor (CP).
  • CP communication processor
  • the processor 2201 may control operations of the base station described with reference to FIGS. 1 to 20.
  • the processor 2201 may control a series of processes such that the base station may operate according to the above-described embodiments of the present disclosure.
  • the processor 2201 may execute a program stored in the memory 2203 to select a band for receiving control information and data during initial access of the terminal, Whether the activation support is reported from the terminal, the antenna activation indication information may be transmitted to the terminal based on the reported activation support of the antenna.
  • the transceiver 2202 may perform functions for transmitting and receiving a signal through a wireless channel.
  • the transceiver 2202 may perform a baseband signal and bit string conversion function according to the physical layer standard of the system.
  • the transceiver 2202 may generate complex symbols by encoding and modulating a transmission bit string.
  • the transceiver 2202 may restore the received bit string by demodulating and decoding the baseband signal.
  • the transceiver 2202 may up-convert the baseband signal to an RF band signal and then transmit it through an antenna, and downconvert the RF band signal received through the antenna to the baseband signal.
  • the transceiver 2202 may include a transmission filter, a reception filter, an amplifier, a mixer, an oscillator, a DAC, an ADC, and the like. Also, the transceiver 2202 may include a plurality of transmit and receive paths. In addition, the transceiver 2202 may include at least one antenna array composed of a plurality of antenna elements. In terms of hardware, the transceiver 2102 may be configured of a digital circuit and an analog circuit (eg, a radio frequency integrated circuit (RFIC)). Here, the digital circuit and the analog circuit can be implemented in one package. In addition, the transceiver 2202 may include a plurality of RF chains.
  • RFIC radio frequency integrated circuit
  • the transceiver 2202 may transmit and receive a signal with the terminal.
  • the signal may include control information and data.
  • the transceiver 2202 may be configured as an RF transmitter for up-converting and amplifying a frequency of a transmitted signal, and an RF receiver for low noise amplifying and down-converting a received signal.
  • this is only an embodiment of the transceiver 2202, and the components of the transceiver 2202 are not limited to the RF transmitter and the RF receiver.
  • the transceiver 2202 may receive a signal through a wireless channel, output the signal to the processor 2201, and transmit a signal output from the processor 2201 through the wireless channel.
  • the memory 2203 may store data such as a basic program, an application program, and configuration information for the operation of the base station.
  • the memory 2203 may be configured of volatile memory, nonvolatile memory, or a combination of volatile memory and nonvolatile memory.
  • the memory 2203 may provide stored data at the request of the processor 2201.
  • the memory 2203 may store at least one of information transmitted and received through the transceiver 2202 and information generated by the processor 2201.
  • a computer readable storage medium storing one or more programs (software modules) may be provided.
  • One or more programs stored in a computer-readable storage medium are configured to be executable by one or more processors in an electronic device.
  • One or more programs may include instructions that cause an electronic device to execute methods according to embodiments described in the claims or specifications of this disclosure.
  • Such programs include random access memory, non-volatile memory including flash memory, read only memory (ROM), and electrically erasable programmable ROM.
  • EEPROM Electrically Erasable Programmable Read Only Memory
  • CD-ROM Compact Disc-ROM
  • DVDs digital versatile discs
  • It can be stored in an optical storage device, a magnetic cassette. Alternatively, it may be stored in a memory composed of a combination of some or all of them. Also, a plurality of configuration memories may be included.
  • the program may be accessed through a communication network composed of a communication network such as the Internet, an intranet, a local area network (LAN), a wide LAN (WLAN), or a storage area network (SAN), or a combination thereof. It may be stored in an attachable storage device. Such a storage device can access a device performing an embodiment of the present disclosure through an external port. In addition, a separate storage device on the communication network may access a device that performs embodiments of the present disclosure.
  • a communication network such as the Internet, an intranet, a local area network (LAN), a wide LAN (WLAN), or a storage area network (SAN), or a combination thereof. It may be stored in an attachable storage device. Such a storage device can access a device performing an embodiment of the present disclosure through an external port.
  • a separate storage device on the communication network may access a device that performs embodiments of the present disclosure.

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

Abstract

Un mode de réalisation de la présente invention concerne un procédé de fonctionnement d'un terminal pour commander un port d'antenne du terminal dans un système de communication sans fil. Le procédé de fonctionnement comprend les étapes consistant à : sélectionner une bande pour recevoir des informations de commande et des données lors de l'accès initial du terminal ; indiquer s'il faut prendre en charge l'activation du port d'antenne, à une station de base ; recevoir des informations d'indication d'activation de port d'antenne, de la station de base ; et déterminer s'il faut activer le port d'antenne, sur la base des informations d'indication d'activation de port d'antenne reçues.
PCT/KR2019/011340 2018-09-03 2019-09-03 Procédé et appareil pour la configuration d'une antenne de terminal dans un système de communication sans fil Ceased WO2020050594A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP19857728.0A EP3829073A4 (fr) 2018-09-03 2019-09-03 Procédé et appareil pour la configuration d'une antenne de terminal dans un système de communication sans fil
US17/250,772 US12218726B2 (en) 2018-09-03 2019-09-03 Method and apparatus for configuring terminal antenna in wireless communication system
CN201980065166.2A CN112789810B (zh) 2018-09-03 2019-09-03 用于在无线通信系统中配置终端天线的方法和装置

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20180104697 2018-09-03
KR10-2018-0104697 2018-09-03
KR10-2018-0137604 2018-11-09
KR1020180137604A KR102664932B1 (ko) 2018-09-03 2018-11-09 무선통신 시스템에서 단말 안테나 설정 방법 및 장치

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WO2020050594A1 true WO2020050594A1 (fr) 2020-03-12

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090014978A (ko) * 2007-08-06 2009-02-11 미쓰비시덴키 가부시키가이샤 안테나 선택 방법 및 시스템
KR20120055747A (ko) * 2010-11-22 2012-06-01 삼성전자주식회사 셀룰라 이동 통신 시스템의 안테나 할당 장치 및 방법
WO2016018100A1 (fr) * 2014-08-01 2016-02-04 엘지전자 주식회사 Procédé permettant de rapporter un état de canal, et dispositif associé
US20160043836A1 (en) * 2010-09-03 2016-02-11 Sharp Kabushiki Kaisha Terminal apparatus, base station apparatus, and communication method technical field
JP2016116045A (ja) * 2014-12-12 2016-06-23 住友電気工業株式会社 アンテナシステム、制御装置、通信装置、制御方法、及びコンピュータプログラム

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090014978A (ko) * 2007-08-06 2009-02-11 미쓰비시덴키 가부시키가이샤 안테나 선택 방법 및 시스템
US20160043836A1 (en) * 2010-09-03 2016-02-11 Sharp Kabushiki Kaisha Terminal apparatus, base station apparatus, and communication method technical field
KR20120055747A (ko) * 2010-11-22 2012-06-01 삼성전자주식회사 셀룰라 이동 통신 시스템의 안테나 할당 장치 및 방법
WO2016018100A1 (fr) * 2014-08-01 2016-02-04 엘지전자 주식회사 Procédé permettant de rapporter un état de canal, et dispositif associé
JP2016116045A (ja) * 2014-12-12 2016-06-23 住友電気工業株式会社 アンテナシステム、制御装置、通信装置、制御方法、及びコンピュータプログラム

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3829073A4 *

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