WO2021140665A1 - Terminal et procédé de communication - Google Patents

Terminal et procédé de communication Download PDF

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Publication number
WO2021140665A1
WO2021140665A1 PCT/JP2020/000739 JP2020000739W WO2021140665A1 WO 2021140665 A1 WO2021140665 A1 WO 2021140665A1 JP 2020000739 W JP2020000739 W JP 2020000739W WO 2021140665 A1 WO2021140665 A1 WO 2021140665A1
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WIPO (PCT)
Prior art keywords
terminal
base station
carrier
interference
frequency
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Application number
PCT/JP2020/000739
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English (en)
Japanese (ja)
Inventor
高橋　秀明
天楊 閔
Original Assignee
株式会社Ｎｔｔドコモ
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.)
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Application filed by 株式会社Ｎｔｔドコモ filed Critical 株式会社Ｎｔｔドコモ
Priority to PCT/JP2020/000739 priority Critical patent/WO2021140665A1/fr
Priority to CN202080092299.1A priority patent/CN114930958A/zh
Publication of WO2021140665A1 publication Critical patent/WO2021140665A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • 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 invention relates to a terminal and a communication method in a wireless communication system.
  • Non-Patent Document 1 NR (New Radio) (also called “5G”), which is the successor system to LTE (Long Term Evolution), the requirements are a large-capacity system, high-speed data transmission speed, low delay, and simultaneous operation of many terminals. Techniques that satisfy connection, low cost, power saving, etc. are being studied (for example, Non-Patent Document 1).
  • IDC In-Device Coexistence
  • LTE uplink carrier aggregation causes interference with other wireless devices (for example, GNSS (Global Navigation Satellite System) device, WLAN (Wireless Local Area Network) device, etc.) provided in the same terminal.
  • LTE communication is controlled to reduce the interference.
  • IDC Intermodulation Distortion
  • harmonics that the terminal cannot solve by its own device. Need to be notified.
  • the terminal since the information about the candidate carrier notified from the network, which is referred to when the terminal reports the carrier affected by the intra-device interference to the network, is unclear, the terminal is affected by the intra-device interference. The carrier suffering from the problem could not be properly reported to the network.
  • the present invention has been made in view of the above points, and an object of the present invention is to report information for a terminal to suppress interference in a device to a network in a wireless communication system.
  • the receiver that receives the setting related to the notification for suppressing the in-device interference in the communication by MR-DC (MultiRadio-Dual Connectivity) from the base station and the in-device interference are detected.
  • a control unit that includes information indicating the frequency and bandwidth of the carrier to be interfered with in the notification for suppressing the interference in the device based on the frequency and bandwidth of the candidate carrier to be interfered in the setting.
  • a terminal having a transmission unit that transmits a notification for suppressing interference in the device to the base station is provided.
  • the terminal in the wireless communication system, can report the information for suppressing the interference in the device to the network.
  • LTE Long Term Evolution
  • LTE-Advanced LTE-Advanced and later methods (eg, NR) unless otherwise specified.
  • SS Synchronization signal
  • PSS Primary SS
  • SSS Secondary SS
  • PBCH Physical broadcast channel
  • PRACH Physical
  • PDCCH Physical Downlink Control Channel
  • PDSCH Physical Downlink Shared Channel
  • PUCCH Physical Uplink Control Channel
  • PUSCH Physical Uplink Shared Channel
  • NR corresponds to NR-SS, NR-PSS, NR-SSS, NR-PBCH, NR-PRACH, NR-PDCCH, NR-PDSCH, NR-PUCCH, NR-PUSCH and the like.
  • NR- even if it is a signal used for NR, it is not always specified as "NR-".
  • the duplex system may be a TDD (Time Division Duplex) system, an FDD (Frequency Division Duplex) system, or other system (for example, Flexible Duplex, etc.). Method may be used.
  • TDD Time Division Duplex
  • FDD Frequency Division Duplex
  • Method may be used.
  • "configuring" the radio parameter or the like may mean that a predetermined value is set in advance (Pre-configure), or the base station 10 or The radio parameter notified from the terminal 20 may be set.
  • FIG. 1 is a diagram for explaining a wireless communication system according to an embodiment of the present invention.
  • the wireless communication system according to the embodiment of the present invention includes a base station 10 and a terminal 20 as shown in FIG.
  • FIG. 1 shows one base station 10 and one terminal 20, this is an example, and there may be a plurality of each.
  • the base station 10 is a communication device that provides one or more cells and performs wireless communication with the terminal 20.
  • the physical resources of the radio signal are defined in the time domain and the frequency domain, the time domain may be defined by the number of OFDM symbols, and the frequency domain may be defined by the number of subcarriers or the number of resource blocks.
  • the base station 10 transmits a synchronization signal and system information to the terminal 20. Synchronous signals are, for example, NR-PSS and NR-SSS.
  • the system information is transmitted by, for example, NR-PBCH, and is also referred to as broadcast information. As shown in FIG.
  • the base station 10 transmits a control signal or data to the terminal 20 by DL (Downlink), and receives the control signal or data from the terminal 20 by UL (Uplink). Both the base station 10 and the terminal 20 can perform beamforming to transmit and receive signals. Further, both the base station 10 and the terminal 20 can apply MIMO (Multiple Input Multiple Output) communication to DL or UL. Further, both the base station 10 and the terminal 20 may communicate via SCell (Secondary Cell) and PCell (Primary Cell) by CA (Carrier Aggregation).
  • SCell Secondary Cell
  • PCell Primary Cell
  • the terminal 20 is a communication device having a wireless communication function such as a smartphone, a mobile phone, a tablet, a wearable terminal, and a communication module for M2M (Machine-to-Machine). As shown in FIG. 1, the terminal 20 receives a control signal or data from the base station 10 by DL, and transmits the control signal or data to the base station 10 by UL, so that various types provided by the wireless communication system are provided. Use communication services.
  • M2M Machine-to-Machine
  • FIG. 2 is a diagram for explaining in-device interference.
  • RATs RadioAccess Technology
  • the terminal 20 includes an RF unit and a baseband unit in addition to an antenna corresponding to each RAT.
  • the dotted line in FIG. 2 shows an example in which a signal from an NR transmitter interferes with an LTE, GNSS (Global Navigation Satellite System) or WLAN (Wireless Local Area Network) receiver.
  • LTE Long Term Evolution
  • GNSS Global Navigation Satellite System
  • WLAN Wireless Local Area Network
  • FIG. 3 is a diagram for explaining an example of intermodulation distortion.
  • FIG. 3 is a diagram for explaining intermodulation distortion (IMD: InterModulation Distortion) in LTE-NR dual connectivity (DC: Dual Connectivity).
  • IMD InterModulation Distortion
  • DC Dual Connectivity
  • FIG. 3 the LTE duplex system assumes FDD, and the NR duplex system assumes TDD.
  • IMD may occur.
  • the terminal 20 generates the IMD in the band having the frequency f3-f1 by simultaneously transmitting the band having the LTE UL frequency f1 and the band having the NR UL frequency f3.
  • the LTE-NR dual connectivity is an example of MR-DC (Multi Radio-Dual Connectivity).
  • FIG. 4 is a diagram for explaining an example (1) of suppressing intermodulation distortion.
  • IMD is suppressed by limiting the arrangement of radio resources in the frequency domain when in-device interference as shown in FIG. 3 occurs.
  • the bandwidth which is the frequency f3-f1 of the generated IMD is reduced in the frequency domain, and the LTE Does not overlap with the band of DL frequency f2. That is, IMD can be suppressed by limiting the arrangement of radio resources in the frequency domain.
  • FIG. 5 is a diagram for explaining an example (2) of suppressing intermodulation distortion.
  • IMD is suppressed by limiting the arrangement of radio resources in the time domain when interference in the device as shown in FIG. 3 occurs.
  • the transmission timing of the band having the UL frequency f3 of NR and the transmission timing of the band having the UL frequency f1 of LTE do not match.
  • IMD does not occur when only one of LTE UL or NR UL is transmitted. That is, IMD can be suppressed by limiting the arrangement of radio resources in the time domain.
  • In-Device Coexistence IDC
  • LTE when the IMD by UL-CA interferes with other systems (for example, GNSS, WLAN, etc.), the terminal 20 displays a combination of the system to be interfered with and the UL carrier that is causing interference. Report to the network with the "InDeviceCoexIndication" message, which is RRC (Radio Resource Control) signaling.
  • RRC Radio Resource Control
  • the network receiving the report by the "InDeviceCoexIndication" message avoids interference by changing the scheduling and performing adjustments in the frequency domain to deactivate or deconfigure the secondary cell.
  • the terminal 20 When introducing IDC, it is necessary to notify the network of carriers affected by IMD that the terminal 20 cannot solve by its own device. However, the provisions for the terminal 20 to notify the network of carriers affected by IMD have not been clarified. Therefore, in the wireless communication system, it is proposed that the terminal notifies the network of information for suppressing intermodulation distortion.
  • FIG. 6 is a sequence diagram for explaining an operation example according to the embodiment of the present invention.
  • the base station 10 transmits "RRC reconstruction" to the terminal 20, sets the RRC, and sets the terminal 20 to execute the notification related to the IDC.
  • the terminal 20 may be set to transmit the notification "InDeviceCoexIndication” related to the IDC to the base station 10 by the information element "idc-Config" included in the information element "otherConfig" included in the "RRC reconstruction". ..
  • step S2 the terminal 20 transmits a notification "InDeviceCoexIndication" related to the IDC to the base station 10.
  • the "InDeviceCoexIndication” message contains, for example, information indicating the combination of the system being interfered with and the carrier being interfered with.
  • the "IDC problem” described below means, for example, a case where it is detected that the carrier is being interfered with, and the terminal 20 cannot solve the interference by its own device.
  • the terminal 20 is set so that the notification related to the IDC is valid. After the notification related to IDC is set to be valid, if the terminal 20 does not send the "InDeviceCoexIndication” message, and an IDC problem occurs in which one or more carriers to be measured interfere with each other. If so, the terminal 20 starts transmitting the "InDeviceCoexIndication" message.
  • the terminal 20 has already sent the "InDeviceCoexIndication" message after the notification related to IDC is set to be enabled, the IDC problem of being interfered with by a carrier different from the "InDeviceCoexIndication” message transmitted immediately before. If there is an IDC problem that causes interference in a system different from the "InDeviceCoexIndication” message sent immediately before, the transmission of the "InDeviceCoexIndication” message may be restarted.
  • the terminal 20 sets the content of the "InDeviceCoexIndication” message.
  • the information element "affectedCarrierFreqCombList” may include all the interfered NR carrier frequencies.
  • “interferenceDirection” may be set as “nr” in the information element "affectedCarrierFreqCombList”.
  • “interference Direction” may be set as "etra-nr”.
  • “interference Direction” may be set as "other".
  • FIG. 7 is a specification change example (1) according to the first operation example in the embodiment of the present invention.
  • FIG. 8 is a specification change example (2) according to the first operation example in the embodiment of the present invention.
  • FIG. 9 is a specification change example (3) according to the first operation example in the embodiment of the present invention.
  • “Idc-Indication-MRDC-v15xy” shown in FIG. 7 is an example of an information element notified from the base station 10 to the terminal 20 in step S1 of FIG. 6 during communication by MR-DC.
  • the “Candidate Serving FreqListNR-v15xy” included in the “idc-Indication-MRDC-v15xy” is the DL or UL channel band of the NR serving cell which is a candidate for the notification related to the IDC for the MR-DC.
  • the width is notified from the base station 10 to the terminal 20.
  • the channel bandwidth may be notified by the information element "BandwiseNR-r15". Possible values for the channel bandwidth are, for example, 10 MHz, 20 MHz, 30 MHz, 40 MHz, 50 MHz, 60 MHz, 80 MHz, 100 MHz, 200 MHz, 300 MHz or 400 MHz.
  • the information element "CandidateServingFreqListNR-r15" shown in FIG. 7 exists when the condition "idc-Ind” is satisfied.
  • the condition "idc-Ind” is a condition in which a field exists when the notification related to IDC is set. If the field does not exist, the use of the field is stopped and an existing value exists. Delete the value.
  • the base station 10 may notify the terminal 20 of "CandidateServingFreqListNR-r15" and "CandidateServingFreqListNR-v15xy".
  • the information element "Candidate Serving FreqListNR-v15xy” exists when the condition "idc-MRDC” is satisfied.
  • the condition "idc-MRDC” is a condition in which a field exists when the notification related to IDC for MR-DC is set. If the field does not exist, the use of the field is stopped and the existing field exists. If the value of is present, delete the value.
  • the base station 10 may notify the terminal 20 of the center frequency of the NR serving cell and the channel bandwidth of DL or UL, which are candidates for notification of IDC for MR-DC. it can. Based on the notified information, the terminal 20 sets the center frequency of the NR serving cell and the channel bandwidth of the DL or UL in the "InDeviceCoexIndication" as the information of the carrier that suffers interference during MR-DC communication, and the base station 10 Can be notified to.
  • FIG. 10 is a specification change example (1) according to a second operation example in the embodiment of the present invention.
  • FIG. 11 is a specification change example (2) according to a second operation example according to the embodiment of the present invention.
  • FIG. 12 is a specification change example (3) according to the second operation example in the embodiment of the present invention.
  • FIG. 13 is a specification change example (4) according to a second operation example according to the embodiment of the present invention.
  • FIG. 14 is a specification change example (5) according to a second operation example according to the embodiment of the present invention.
  • “Idc-Indication-MRDC-v15xy” shown in FIG. 10 is an example of an information element notified from the base station 10 to the terminal 20 in step S1 of FIG. 6 during communication by MR-DC.
  • the “Candidate Serving FreqListNR-v15xy” included in the “idc-Indication-MRDC-v15xy” is an NR other than SSB (Synchronization Signal Block) which is a candidate for notification related to IDC for MR-DC.
  • the information of the serving cell is notified from the base station 10 to the terminal 20.
  • NR serving cells other than SSB which is a candidate for IDC notification for MR-DC
  • Information on NR serving cells other than SSB may be notified by one or more information elements "CandidateServingFreqNR-r15", and "CandidateServingFreqNR-r15" is DL and "Candidate Serving FreqInfoNR-r15" corresponding to each UL may be included.
  • the information element "CandidateServingFreqListNR-v15xy” exists when the condition "idc-MRDC” is satisfied.
  • the condition "idc-MRDC” is a condition in which a field exists when the notification related to IDC for MR-DC is set. If the field does not exist, the use of the field is stopped and the existing field exists. If the value of is present, delete the value.
  • "idc-Indication-MRDC-r15" shown in FIG. 10 is an example of an information element notified from the base station 10 to the terminal 20 in step S1 of FIG. 6 at the time of communication by MR-DC.
  • the "Candidate Serving FreqListNR-r15" included in the "idc-Indication-MRDC-r15" is based on the information related to the SSB of the NR serving cell which is a candidate for the notification related to the IDC for the MR-DC.
  • the station 10 notifies the terminal 20.
  • the information related to the SSB of the NR serving cell which is a candidate for the notification related to the IDC for MR-DC, may be notified by the information element "ARFCN-ValueNR-r15" indicating the frequency.
  • the information element "CandidateServingFreqListNR-r15" shown in FIG. 10 exists when the condition "idc-Ind” is satisfied.
  • the condition "idc-Ind” is a condition in which a field exists when the notification related to IDC is set. If the field does not exist, the use of the field is stopped and an existing value exists. Delete the value.
  • CandidateServingFreqInfoNR-r15 may include at least one of the following information elements 1) -5), for example.
  • the information element indicates the absolute position of the reference resource block in the frequency domain.
  • the reference resource block may be referred to as "Common RB 0".
  • the subcarrier located at the lowest frequency of the reference resource block may be referred to as "Point A”.
  • the information element is between the absolute position in the frequency domain of the reference resource block indicated by the absoluteFreequencyPointA-r15 and the subcarrier located at the lowest available frequency of the carriers.
  • the offset is indicated by the number of PRBs (Physical Resource Blocks). For example, the maximum value of the offset may be 275 * 8-1.
  • subcarrier Spacing-r15 As shown in FIG. 14, the information element indicates the subcarrier spacing applied to the carrier. The actual frequency is calculated from the number of PRBs indicated by offsetToCarrier-r15 and the subcarrier interval.
  • the subcarrier interval can be 15 kHz, 30 kHz or 60 kHz in FR1 (Frequency Range 1), and 60 kHz or 120 kHz in FR2 (Frequency Range 2).
  • carrierBandwidth-r15 As shown in FIG. 14, the information element indicates the bandwidth of the carrier by the number of PRBs.
  • the information element indicates the current position of DL transmission in the carrier.
  • the value is indicated by the subcarrier index of the carrier, and takes a value from 0 to 3299, for example.
  • FIG. 15 is a specification change example (6) according to the second operation example in the embodiment of the present invention.
  • the terminal 20 transmits a notification “InDeviceCoexIndication” related to the IDC to the base station 10.
  • the "InDeviceCoexIndication” message may include the information element "AffectiveCarrierFreqCombInfoMRDC-v15xy".
  • the "AffectiveCarrierFreqCombInfoMRDC-v15xy” may include the information element "AffectiveCarrierFreqCombNR-v15xy" as many as the number of serving cells.
  • the "AffectiveCarrierFreqCombNR-v15xy” may include the information element "AffectiveCarrierFreqNR-r15".
  • "AffectedCarrierFreqNR-r15” may include "CandidateServingFreqInfoNR-r15” shown in FIG. 13 corresponding to DL and UL respectively.
  • FIG. 16 is a specification change example (7) according to the second operation example in the embodiment of the present invention.
  • the terminal 20 sets the “affectedCarrierFreqCombNR-v15xy” with a set of information relating to at least one NR serving cell that is subject to interference due to IMD and harmonics during MR-DC communication, and “InDeviceCoexIndication”. It is possible to notify the base station 10 of "AffectedCarrierFreqCombNR-v15xy" via a message.
  • the base station 10 can notify the terminal 20 of the frequency of the NR serving cell and the channel bandwidth of DL or UL, which are candidates for notification of IDC for MR-DC. .. Based on the notified information, the terminal 20 sets the center frequency of the NR serving cell and the channel bandwidth of the DL or UL in the "InDeviceCoexIndication" as the information of the carrier that suffers interference during MR-DC communication, and the base station 10 Can be notified to.
  • the terminal 20 when the terminal 20 reports the information for suppressing the interference caused by the intermodulation distortion to the network by the mechanism of IDC, the terminal 20 can accurately report the frequency and bandwidth of the carrier suffering the interference. it can.
  • the terminal can report the information for suppressing the interference in the device to the network.
  • the base station 10 and the terminal 20 include a function of carrying out the above-described embodiment.
  • the base station 10 and the terminal 20 may each have only a part of the functions in the embodiment.
  • FIG. 17 is a diagram showing an example of the functional configuration of the base station 10.
  • the base station 10 includes a transmission unit 110, a reception unit 120, a setting unit 130, and a control unit 140.
  • the functional configuration shown in FIG. 17 is only an example. Any function classification and name of the functional unit may be used as long as the operation according to the embodiment of the present invention can be executed.
  • the transmission unit 110 includes a function of generating a signal to be transmitted to the terminal 20 side and transmitting the signal wirelessly.
  • the receiving unit 120 includes a function of receiving various signals transmitted from the terminal 20 and acquiring information of, for example, a higher layer from the received signals. Further, the transmission unit 110 has a function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL / UL control signals and the like to the terminal 20.
  • the setting unit 130 stores preset setting information and various setting information to be transmitted to the terminal 20 in the storage device, and reads the setting information from the storage device as needed.
  • the content of the setting information is, for example, a communication setting related to interference in the device of the terminal 20 and the like.
  • control unit 140 determines the information for setting the notification related to the in-device interference in the terminal 20. Further, the control unit 140 sets the communication for suppressing the interference based on the notification regarding the interference in the device notified from the terminal 20.
  • the function unit related to signal transmission in the control unit 140 may be included in the transmission unit 110, and the function unit related to signal reception in the control unit 140 may be included in the reception unit 120.
  • FIG. 18 is a diagram showing an example of the functional configuration of the terminal 20.
  • the terminal 20 has a transmitting unit 210, a receiving unit 220, a setting unit 230, and a control unit 240.
  • the functional configuration shown in FIG. 18 is only an example. Any function classification and name of the functional unit may be used as long as the operation according to the embodiment of the present invention can be executed.
  • the transmission unit 210 creates a transmission signal from the transmission data and wirelessly transmits the transmission signal.
  • the receiving unit 220 wirelessly receives various signals and acquires a signal of a higher layer from the received signal of the physical layer. Further, the receiving unit 220 has a function of receiving NR-PSS, NR-SSS, NR-PBCH, DL / UL / SL control signals and the like transmitted from the base station 10. Further, for example, the transmission unit 210 connects the other terminal 20 to PSCCH (Physical Sidelink Control Channel), PSCH (Physical Sidelink Shared Channel), PSDCH (Physical Sidelink Discovery Channel), PSBCH (Physical Sidelink Broadcast Channel) as D2D communication. Etc., and the receiving unit 220 receives the PSCCH, PSCH, PSDCH, PSBCH, etc. from the other terminal 20.
  • PSCCH Physical Sidelink Control Channel
  • PSCH Physical Sidelink Shared Channel
  • PSDCH Physical Sidelink Discovery Channel
  • PSBCH Physical Sidelink Broadcast
  • the setting unit 230 stores various setting information received from the base station 10 or the terminal 20 by the receiving unit 220 in the storage device, and reads it out from the storage device as needed.
  • the setting unit 230 also stores preset setting information.
  • the content of the setting information is, for example, a setting related to notification of interference in the terminal 20 and the like.
  • control unit 240 detects the interference in the device and notifies the base station 10 of the device or carrier receiving the interference.
  • the function unit related to signal transmission in the control unit 240 may be included in the transmission unit 210, and the function unit related to signal reception in the control unit 240 may be included in the reception unit 220.
  • each functional block may be realized by using one device that is physically or logically connected, or directly or indirectly (for example, by two or more devices that are physically or logically separated). , Wired, wireless, etc.) and may be realized using these plurality of devices.
  • the functional block may be realized by combining the software with the one device or the plurality of devices.
  • Functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, and assumption.
  • broadcasting notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but only these.
  • a functional block that makes transmission function is called a transmitting unit (transmitting unit) or a transmitter (transmitter).
  • transmitting unit transmitting unit
  • transmitter transmitter
  • the base station 10, the terminal 20, and the like in one embodiment of the present disclosure may function as a computer that processes the wireless communication method of the present disclosure.
  • FIG. 19 is a diagram showing an example of the hardware configuration of the base station 10 and the terminal 20 according to the embodiment of the present disclosure.
  • the above-mentioned base station 10 and terminal 20 are physically configured as a computer device including a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like. May be good.
  • the word “device” can be read as a circuit, device, unit, etc.
  • the hardware configuration of the base station 10 and the terminal 20 may be configured to include one or more of the devices shown in the figure, or may be configured not to include some of the devices.
  • the processor 1001 For each function of the base station 10 and the terminal 20, the processor 1001 performs an operation by loading predetermined software (program) on the hardware such as the processor 1001 and the storage device 1002, and controls the communication by the communication device 1004. It is realized by controlling at least one of reading and writing of data in the storage device 1002 and the auxiliary storage device 1003.
  • Processor 1001 operates, for example, an operating system to control the entire computer.
  • the processor 1001 may be composed of a central processing unit (CPU: Central Processing Unit) including an interface with a peripheral device, a control device, an arithmetic unit, a register, and the like.
  • CPU Central Processing Unit
  • control unit 140, control unit 240, and the like may be realized by the processor 1001.
  • the processor 1001 reads a program (program code), a software module, data, or the like from at least one of the auxiliary storage device 1003 and the communication device 1004 into the storage device 1002, and executes various processes according to these.
  • a program program that causes a computer to execute at least a part of the operations described in the above-described embodiment is used.
  • the control unit 140 of the base station 10 shown in FIG. 17 may be realized by a control program stored in the storage device 1002 and operated by the processor 1001.
  • the control unit 240 of the terminal 20 shown in FIG. 18 may be realized by a control program stored in the storage device 1002 and operated by the processor 1001.
  • Processor 1001 may be implemented by one or more chips.
  • the program may be transmitted from the network via a telecommunication line.
  • the storage device 1002 is a computer-readable recording medium, and is, for example, by at least one of ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), and the like. It may be configured.
  • the storage device 1002 may be referred to as a register, a cache, a main memory (main storage device), or the like.
  • the storage device 1002 can store a program (program code), a software module, or the like that can be executed to implement the communication method according to the embodiment of the present disclosure.
  • the auxiliary storage device 1003 is a computer-readable recording medium, and is, for example, an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, an optical magnetic disk (for example, a compact disk, a digital versatile disk, Blu).
  • -It may be composed of at least one of a ray® disc), a smart card, a flash memory (eg, a card, a stick, a key drive), a floppy® disc, a magnetic strip, and the like.
  • the storage medium described above may be, for example, a database, server or other suitable medium containing at least one of the storage device 1002 and the auxiliary storage device 1003.
  • the communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, or the like.
  • the communication device 1004 includes, for example, a high frequency switch, a duplexer, a filter, a frequency synthesizer, and the like in order to realize at least one of frequency division duplex (FDD: Frequency Division Duplex) and time division duplex (TDD: Time Division Duplex). It may be composed of.
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • the transmission / reception unit may be physically or logically separated from each other in the transmission unit and the reception unit.
  • the input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives an input from the outside.
  • the output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that outputs to the outside.
  • the input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).
  • each device such as the processor 1001 and the storage device 1002 is connected by a bus 1007 for communicating information.
  • the bus 1007 may be configured by using a single bus, or may be configured by using a different bus for each device.
  • the base station 10 and the terminal 20 are hardware such as a microprocessor, a digital signal processor (DSP: Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), and an FPGA (Field Programmable Gate Array). It may be configured to include, and a part or all of each functional block may be realized by the hardware. For example, processor 1001 may be implemented using at least one of these hardware.
  • DSP Digital Signal Processor
  • ASIC Application Specific Integrated Circuit
  • PLD Programmable Logic Device
  • FPGA Field Programmable Gate Array
  • the receiving unit that receives the setting related to the notification for suppressing the interference in the device in the communication by MR-DC (Multi Radio-Dual Connectivity) from the base station.
  • MR-DC Multi Radio-Dual Connectivity
  • the frequency and band of the interfering carrier are notified in the notification for suppressing the intra-device interference based on the frequency and bandwidth of the interfering carrier candidate included in the setting.
  • a terminal is provided having a control unit that includes information indicating the width and a transmission unit that transmits a notification for suppressing interference in the device to the base station.
  • the terminal 20 can accurately report the frequency and bandwidth of the carrier suffering from the interference when reporting the information for suppressing the interference caused by the intermodulation distortion to the network by the mechanism of IDC. .. That is, in the wireless communication system, the terminal can report the information for suppressing the interference in the device to the network.
  • the frequency of the carrier candidate that receives interference included in the above setting may be the center frequency of the carrier.
  • the base station 10 can notify the terminal 20 of the center frequency of the NR serving cell, which is a candidate for notification related to IDC for MR-DC. Based on the notified information, the terminal 20 can set the information of the carrier that suffers interference during MR-DC communication in the "InDeviceCoexIndication" and notify the base station 10.
  • the information element related to the carrier candidate to be interfered with in the setting and the information element related to the carrier to be interfered with included in the notification for suppressing the interference in the device may be the same. ..
  • the base station 10 can notify the terminal 20 of the frequency of the NR serving cell, which is a candidate for notification of the IDC for MR-DC, and the channel bandwidth of DL or UL.
  • the terminal according to claim 3, wherein the same information element includes at least one of the following 1) -5). 1) Absolute position in the frequency domain of the reference resource block 2) Offset between the absolute position in the frequency domain of the reference resource block and the subcarrier located at the lowest usable frequency of the carriers 3) Subcarrier spacing applied to the carrier 4) Carrier bandwidth 5) Current position of downlink transmission in the carrier With this configuration, the base station 10 is a candidate for IDC notification for MR-DC in the NR serving cell. The frequency and DL or UL channel bandwidth can be notified to the terminal 20.
  • MR-DC MultiRadio-Dual Connectivity
  • the notification for suppressing the interference in the device is provided with information indicating the frequency and bandwidth of the carrier to be interfered with.
  • a communication method is provided in which the terminal executes a control procedure to include and a transmission procedure for transmitting a notification for suppressing interference in the device to the base station.
  • the terminal 20 can accurately report the frequency and bandwidth of the carrier suffering from the interference when reporting the information for suppressing the interference caused by the intermodulation distortion to the network by the mechanism of IDC. .. That is, in the wireless communication system, the terminal can report the information for suppressing the interference in the device to the network.
  • the operation of the plurality of functional units may be physically performed by one component, or the operation of one functional unit may be physically performed by a plurality of components.
  • the processing order may be changed as long as there is no contradiction.
  • the base station 10 and the terminal 20 have been described with reference to functional block diagrams, but such devices may be implemented in hardware, software, or a combination thereof.
  • the software operated by the processor of the base station 10 according to the embodiment of the present invention and the software operated by the processor of the terminal 20 according to the embodiment of the present invention are random access memory (RAM), flash memory, and read-only memory, respectively. It may be stored in (ROM), EPROM, EEPROM, registers, hard disk (HDD), removable disk, CD-ROM, database, server or any other suitable storage medium.
  • information notification includes physical layer signaling (for example, DCI (Downlink Control Information), UCI (Uplink Control Information)), higher layer signaling (for example, RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, etc. Broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals, or a combination thereof may be used.
  • RRC signaling may be referred to as an RRC message, for example, RRC. It may be a connection setup (RRCConnectionSetup) message, an RRC connection reconfiguration (RRCConnectionReconfiguration) message, or the like.
  • Each aspect / embodiment described in the present disclosure includes LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), and 5G (5th generation mobile communication).
  • system FRA (Future Radio Access), NR (new Radio), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)) )), LTE 802.16 (WiMAX®), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth®, and other systems that utilize suitable systems and have been extended based on these. It may be applied to at least one of the next generation systems. Further, a plurality of systems may be applied in combination (for example, a combination of at least one of LTE and LTE-A and 5G).
  • the specific operation performed by the base station 10 in the present specification may be performed by its upper node.
  • various operations performed for communication with the terminal 20 are performed by the base station 10 and other network nodes other than the base station 10 (for example, it is clear that it can be done by at least one of (but not limited to, MME, S-GW, etc.).
  • the other network node may be a combination of a plurality of other network nodes (for example, MME and S-GW). ..
  • the information, signals, etc. described in the present disclosure can be output from the upper layer (or lower layer) to the lower layer (or upper layer). Input / output may be performed via a plurality of network nodes.
  • the input / output information and the like may be stored in a specific location (for example, memory) or may be managed using a management table. Input / output information and the like can be overwritten, updated, or added. The output information and the like may be deleted. The input information or the like may be transmitted to another device.
  • the determination in the present disclosure may be made by a value represented by 1 bit (0 or 1), by a boolean value (Boolean: true or false), or by comparing numerical values (for example,). , Comparison with a predetermined value).
  • Software whether referred to as software, firmware, middleware, microcode, hardware description language, or by any other name, is an instruction, instruction set, code, code segment, program code, program, subprogram, software module.
  • Applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, features, etc. should be broadly interpreted.
  • software, instructions, information, etc. may be transmitted and received via a transmission medium.
  • a transmission medium For example, a website that uses at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL: Digital Subscriber Line), etc.) and wireless technology (infrared, microwave, etc.).
  • wired technology coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL: Digital Subscriber Line), etc.
  • wireless technology infrared, microwave, etc.
  • the information, signals, etc. described in this disclosure may be represented using any of a variety of different techniques.
  • data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description are voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may be represented by a combination of.
  • a channel and a symbol may be a signal (signaling).
  • the signal may be a message.
  • the component carrier CC: Component Carrier
  • CC Component Carrier
  • system and “network” used in this disclosure are used interchangeably.
  • the information, parameters, etc. described in the present disclosure may be expressed using absolute values, relative values from predetermined values, or using other corresponding information. It may be represented.
  • the radio resource may be one indicated by an index.
  • base station Base Station
  • radio base station base station
  • base station device fixed station
  • NodeB NodeB
  • eNodeB eNodeB
  • GNB gNodeB
  • access point “ transmission point ”,“ reception point ”,“ transmission / reception point ”,“ cell ”,“ sector ”
  • Terms such as “cell group,” “carrier,” and “component carrier” can be used interchangeably.
  • Base stations are sometimes referred to by terms such as macrocells, small cells, femtocells, and picocells.
  • the base station can accommodate one or more (for example, three) cells.
  • a base station accommodates multiple cells, the entire coverage area of the base station can be divided into multiple smaller areas, each smaller area being a base station subsystem (eg, a small indoor base station (RRH:)).
  • Communication services can also be provided by Remote Radio Head).
  • the term "cell” or “sector” refers to part or all of the coverage area of at least one of the base stations and base station subsystems that provide communication services in this coverage. Point to.
  • MS Mobile Station
  • UE User Equipment
  • Mobile stations can be used by those skilled in the art as subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless. It may also be referred to as a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.
  • At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a communication device, or the like. At least one of the base station and the mobile station may be a device mounted on the mobile body, the mobile body itself, or the like.
  • the moving body may be a vehicle (for example, a car, an airplane, etc.), an unmanned moving body (for example, a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned type). ) May be.
  • at least one of the base station and the mobile station includes a device that does not necessarily move during communication operation.
  • at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.
  • IoT Internet of Things
  • the base station in the present disclosure may be read by the user terminal.
  • the communication between the base station and the user terminal is replaced with the communication between a plurality of terminals 20 (for example, it may be called D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.).
  • D2D Device-to-Device
  • V2X Vehicle-to-Everything
  • Each aspect / embodiment of the present disclosure may be applied to the configuration.
  • the terminal 20 may have the function of the base station 10 described above.
  • words such as "up” and “down” may be read as words corresponding to communication between terminals (for example, "side”).
  • an uplink channel, a downlink channel, and the like may be read as a side channel.
  • the user terminal in the present disclosure may be read as a base station.
  • the base station may have the functions of the above-mentioned user terminal.
  • determining and “determining” used in this disclosure may include a wide variety of actions.
  • “Judgment” and “decision” are, for example, judgment (judging), calculation (calculating), calculation (computing), processing (processing), derivation (deriving), investigation (investigating), search (looking up, search, inquiry). (For example, searching in a table, database or another data structure), ascertaining may be regarded as “judgment” or “decision”.
  • judgment and “decision” are receiving (for example, receiving information), transmitting (for example, transmitting information), input (input), output (output), and access.
  • Accessing (for example, accessing data in memory) may be regarded as "judgment” or “decision”.
  • judgment and “decision” mean that the things such as solving, selecting, choosing, establishing, and comparing are regarded as “judgment” and “decision”. Can include. That is, “judgment” and “decision” may include considering some action as “judgment” and “decision”. Further, “judgment (decision)” may be read as “assuming”, “expecting”, “considering” and the like.
  • connection means any direct or indirect connection or connection between two or more elements, and each other. It can include the presence of one or more intermediate elements between two “connected” or “combined” elements.
  • the connection or connection between the elements may be physical, logical, or a combination thereof.
  • connection may be read as "access”.
  • the two elements use at least one of one or more wires, cables and printed electrical connections, and, as some non-limiting and non-comprehensive examples, the radio frequency domain. Can be considered to be “connected” or “coupled” to each other using electromagnetic energies having wavelengths in the microwave and light (both visible and invisible) regions.
  • the reference signal can also be abbreviated as RS (Reference Signal), and may be called a pilot (Pilot) depending on the applicable standard.
  • RS Reference Signal
  • Pilot Pilot
  • references to elements using designations such as “first”, “second”, etc. as used in this disclosure does not generally limit the quantity or order of those elements. These designations can be used in the present disclosure as a convenient way to distinguish between two or more elements. Thus, references to the first and second elements do not mean that only two elements can be adopted, or that the first element must somehow precede the second element.
  • the wireless frame may be composed of one or more frames in the time domain. Each one or more frames in the time domain may be referred to as a subframe. Subframes may further consist of one or more slots in the time domain.
  • the subframe may have a fixed time length (eg, 1 ms) that does not depend on numerology.
  • the numerology may be a communication parameter that applies to at least one of the transmission and reception of a signal or channel.
  • Numerology includes, for example, subcarrier spacing (SCS: SubCarrier Spacing), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI: Transmission Time Interval), number of symbols per TTI, wireless frame configuration, and transmitter / receiver.
  • SCS subcarrier spacing
  • TTI Transmission Time Interval
  • At least one of a specific filtering process performed in the frequency domain, a specific windowing process performed by the transmitter / receiver in the time domain, and the like may be indicated.
  • the slot may be composed of one or more symbols in the time domain (OFDM (Orthogonal Frequency Division Multiplexing) symbol, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbol, etc.). Slots may be in time units based on numerology.
  • OFDM Orthogonal Frequency Division Multiplexing
  • SC-FDMA Single Carrier Frequency Division Multiple Access
  • the slot may include a plurality of mini slots. Each minislot may consist of one or more symbols in the time domain. Further, the mini slot may be referred to as a sub slot. A minislot may consist of a smaller number of symbols than the slot.
  • PDSCH (or PUSCH) transmitted in time units larger than the minislot may be referred to as PDSCH (or PUSCH) mapping type A.
  • the PDSCH (or PUSCH) transmitted using the minislot may be referred to as the PDSCH (or PUSCH) mapping type B.
  • the wireless frame, subframe, slot, minislot and symbol all represent the time unit when transmitting a signal.
  • the radio frame, subframe, slot, minislot and symbol may have different names corresponding to each.
  • one subframe may be called a transmission time interval (TTI), a plurality of consecutive subframes may be called TTI, and one slot or one minislot may be called TTI.
  • TTI transmission time interval
  • the unit representing TTI may be called a slot, a mini slot, or the like instead of a subframe.
  • TTI refers to, for example, the minimum time unit of scheduling in wireless communication.
  • the base station schedules each terminal 20 to allocate radio resources (frequency bandwidth that can be used in each terminal 20, transmission power, etc.) in TTI units.
  • the definition of TTI is not limited to this.
  • the TTI may be a transmission time unit such as a channel-encoded data packet (transport block), a code block, or a code word, or may be a processing unit such as scheduling or link adaptation.
  • the time interval for example, the number of symbols
  • the transport block, code block, code word, etc. may be shorter than the TTI.
  • one or more TTIs may be the minimum time unit for scheduling. Further, the number of slots (number of mini-slots) constituting the minimum time unit of the scheduling may be controlled.
  • a TTI having a time length of 1 ms may be referred to as a normal TTI (TTI in LTE Rel. 8-12), a normal TTI, a long TTI, a normal subframe, a normal subframe, a long subframe, a slot, or the like.
  • TTIs shorter than normal TTIs may be referred to as shortened TTIs, short TTIs, partial TTIs (partial or fractional TTIs), shortened subframes, short subframes, minislots, subslots, slots, and the like.
  • the long TTI (for example, normal TTI, subframe, etc.) may be read as a TTI having a time length of more than 1 ms, and the short TTI (for example, shortened TTI, etc.) is less than the TTI length of the long TTI and 1 ms. It may be read as a TTI having the above TTI length.
  • the resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or a plurality of continuous subcarriers in the frequency domain.
  • the number of subcarriers contained in the RB may be the same regardless of the numerology, and may be, for example, 12.
  • the number of subcarriers contained in the RB may be determined based on numerology.
  • the time domain of the RB may include one or more symbols, and may have a length of 1 slot, 1 mini slot, 1 subframe, or 1 TTI.
  • Each 1TTI, 1 subframe, etc. may be composed of one or a plurality of resource blocks.
  • One or more RBs include a physical resource block (PRB: Physical RB), a sub-carrier group (SCG: Sub-Carrier Group), a resource element group (REG: Resource Element Group), a PRB pair, an RB pair, and the like. May be called.
  • PRB Physical resource block
  • SCG Sub-Carrier Group
  • REG Resource Element Group
  • PRB pair an RB pair, and the like. May be called.
  • the resource block may be composed of one or a plurality of resource elements (RE: Resource Element).
  • RE Resource Element
  • 1RE may be a radio resource area of 1 subcarrier and 1 symbol.
  • Bandwidth part (which may also be called partial bandwidth) may represent a subset of consecutive common resource blocks (RBs) for a certain neurology in a carrier.
  • the common RB may be specified by the index of the RB with respect to the common reference point of the carrier.
  • PRBs may be defined in a BWP and numbered within that BWP.
  • the BWP may include a BWP for UL (UL BWP) and a BWP for DL (DL BWP).
  • UL BWP UL BWP
  • DL BWP DL BWP
  • One or more BWPs may be set in one carrier for the UE.
  • At least one of the configured BWPs may be active, and the UE may not expect to send or receive a given signal / channel outside the active BWP.
  • “cell”, “carrier” and the like in this disclosure may be read as “BWP”.
  • the above-mentioned structures such as wireless frames, subframes, slots, minislots and symbols are merely examples.
  • the number of subframes contained in a wireless frame the number of slots per subframe or wireless frame, the number of minislots contained in a slot, the number of symbols and RBs contained in a slot or minislot, and the number of RBs.
  • the number of subcarriers, the number of symbols in the TTI, the symbol length, the cyclic prefix (CP: Cyclic Prefix) length, and other configurations can be changed in various ways.
  • the term "A and B are different” may mean “A and B are different from each other”.
  • the term may mean that "A and B are different from C”.
  • Terms such as “separate” and “combined” may be interpreted in the same way as “different”.
  • the notification of predetermined information (for example, the notification of "being X") is not limited to the explicit one, but is performed implicitly (for example, the notification of the predetermined information is not performed). May be good.
  • the "InDeviceCoexIndication” message is an example of a notification for suppressing in-device interference.
  • Candidate Serving FreqInfoNR-r15 is an example of an information element related to a candidate carrier to be interfered with or an information element related to a carrier to be interfered with.
  • Base station 110 Transmission unit 120 Reception unit 130 Setting unit 140 Control unit 20 Terminal 210 Transmission unit 220 Reception unit 230 Setting unit 240 Control unit 1001 Processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication device 1005 Input device 1006 Output device

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

Abstract

L'invention concerne un terminal comprenant : une unité de réception qui reçoit, d'une station de base, une configuration relative à une notification permettant de supprimer des interférences intra-dispositif en communication par le biais d'une connectivité multiradio - double connectivité (MR-DC) ; une unité de commande qui, lorsqu'une interférence intra-dispositif est détectée, d'après une fréquence et une bande passante d'une porteuse candidate soumise à des interférences incluse dans la configuration, comprend des informations indiquant une fréquence et une bande passante d'une porteuse soumise à des interférences dans la notification permettant de supprimer les interférences intra-dispositif ; et une unité de transmission qui transmet la notification permettant de supprimer les interférences intra-dispositif à la station de base.
PCT/JP2020/000739 2020-01-10 2020-01-10 Terminal et procédé de communication WO2021140665A1 (fr)

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