WO2023209831A1 - Terminal et station de base - Google Patents

Terminal et station de base Download PDF

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Publication number
WO2023209831A1
WO2023209831A1 PCT/JP2022/018990 JP2022018990W WO2023209831A1 WO 2023209831 A1 WO2023209831 A1 WO 2023209831A1 JP 2022018990 W JP2022018990 W JP 2022018990W WO 2023209831 A1 WO2023209831 A1 WO 2023209831A1
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WIPO (PCT)
Prior art keywords
period
adaptation
terminal
information
notified
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PCT/JP2022/018990
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English (en)
Japanese (ja)
Inventor
知也 小原
優元 ▲高▼橋
Original Assignee
株式会社Ｎｔｔドコモ
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Priority to PCT/JP2022/018990 priority Critical patent/WO2023209831A1/fr
Publication of WO2023209831A1 publication Critical patent/WO2023209831A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • 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 terminals and base stations.
  • the 3rd Generation Partnership Project (3GPP) is the 5th generation mobile communication system (5G, New Radio (NR) or ext Generation (NG)), and furthermore, the next generation specifications called Beyond 5G, 5G Evolution, or 6G. is also progressing.
  • 5G New Radio
  • NG ext Generation
  • 3GPP has introduced an intermittent reception method for terminals to receive signals with low power consumption. Note that power may be replaced with energy, and power saving may be replaced with power reduction, etc.
  • 3GPP TS 38.300 V17.0.0 (2022-03) “New SI: Study on network energy savings for NR”, RP-213554, 3GPP TSG RAN Meeting #94e, 3GPP, December 2021
  • One aspect of the present disclosure provides a terminal and a base station that can appropriately receive signals in an intermittent reception method.
  • a terminal includes: a control unit that adjusts the active period in a cycle having an active period in which a signal is received and a sleep period in which the signal is not received; A receiving unit that receives a signal.
  • the base station is configured to receive a signal received in the active period after a period having an active period in which a terminal receives a signal and a sleep period in which the terminal does not receive the signal is adjusted. It includes a control unit that generates the signal, and a transmitter that transmits the signal.
  • FIG. 1 is a diagram illustrating an example of a wireless communication system according to an embodiment of the present disclosure.
  • 1 is a diagram illustrating an example of a frequency range used in a wireless communication system according to an embodiment of the present disclosure.
  • FIG. 2 is a diagram illustrating a configuration example of a radio frame, a subframe, and a slot used in a radio communication system according to an embodiment of the present disclosure.
  • FIG. 2 is a diagram for explaining CDRX in 3GPP Release 15.
  • FIG. 2 is a diagram for explaining WUS in 3GPP Release 16.
  • FIG. 3 is a diagram illustrating an example of the relationship between the reception period of the CDRX function and the arrival timing of XR traffic.
  • FIG. 3 is a diagram showing a first example of a notification method.
  • FIG. 7 is a diagram showing a second example of a notification method.
  • FIG. 7 is a diagram showing a third example of a notification method. It is a figure which shows the 4th example about a notification method. It is a figure which shows the 5th example about a notification method.
  • FIG. 3 is a diagram showing a first example of application of adaptation.
  • FIG. 7 is a diagram showing a second example of application of adaptation.
  • FIG. 7 is a diagram showing a third example of application of adaptation.
  • FIG. 7 is a diagram showing a fourth example of application of adaptation.
  • FIG. 7 is a diagram showing a fifth example of application of adaptation.
  • FIG. 1 is a block diagram illustrating an example of a configuration of a base station according to an embodiment of the present disclosure.
  • FIG. 1 is a block diagram illustrating an example of a configuration of a base station according to an embodiment of the present disclosure.
  • FIG. 1 is a block diagram illustrating an example of a configuration of a base station
  • FIG. 1 is a block diagram illustrating an example of the configuration of a terminal according to an embodiment of the present disclosure.
  • FIG. 2 is a diagram illustrating an example of the hardware configuration of a base station and a terminal according to an embodiment of the present disclosure.
  • 1 is a diagram illustrating an example of a configuration of a vehicle according to an embodiment of the present disclosure.
  • FIG. 1 is a diagram illustrating an example of a wireless communication system 10 according to an embodiment of the present disclosure.
  • the wireless communication system 10 is a wireless communication system that complies with 5G NR, and includes a Next Generation-Radio Access Network 20 (hereinafter referred to as NG-RAN 20) and a terminal 200 (hereinafter also referred to as UE (User Equipment) 200). include.
  • NG-RAN 20 Next Generation-Radio Access Network 20
  • UE User Equipment
  • the wireless communication system 10 may be a wireless communication system that follows a system called Beyond 5G, 5G Evolution, or 6G.
  • the NG-RAN 20 includes a base station 100A (hereinafter also referred to as gNB 100A) and a base station 100B (hereinafter also referred to as gNB 100B). Note that when there is no need to distinguish between gNB 100A, gNB 100B, etc., they are collectively referred to as gNB or base station 100. Furthermore, the number of gNBs and UEs is not limited to the example shown in FIG. 1 .
  • the NG-RAN 20 actually includes multiple NG-RAN nodes, specifically gNBs (or ng-eNBs), and is connected to a 5G-compliant core network (5GC, not shown).
  • gNB may be replaced with network (NW).
  • the gNB 100A and gNB 100B are, for example, base stations that comply with 5G, and perform wireless communication with the UE 200 according to 5G.
  • gNB100A, gNB100B, and UE200 use MIMO (Multiple-Input Multiple-Output), which generates a beam BM with higher directivity by controlling radio signals transmitted from multiple antenna elements, and multiple component carriers (CC:
  • the present invention may support carrier aggregation (CA) that uses a bundle of components carriers, dual connectivity (DC) that performs communication between the UE and each of two NG-RAN nodes, and the like.
  • CA carrier aggregation
  • DC dual connectivity
  • the wireless communication system 10 may support multiple frequency ranges (FR).
  • FIG. 2 is a diagram showing an example of FR used in the wireless communication system 10. As shown in FIG. 2, the wireless communication system 10 may support FR1 and FR2.
  • the frequency bands of each FR are, for example, as follows. ⁇ FR1: 410MHz ⁇ 7.125GHz ⁇ FR2: 24.25GHz to 52.6GHz
  • FR1 sub-carrier spacing (SCS) of 15 kHz, 30 kHz, or 60 kHz may be used, and a bandwidth (BW) of 5 to 100 MHz may be used.
  • SCS sub-carrier spacing
  • BW bandwidth
  • FR2 is at a higher frequency than FR1, and an SCS of 60 kHz or 120 kHz (may include 240 kHz) may be used, and a bandwidth (BW) of 50 to 400 MHz may be used.
  • SCS may be interpreted as numerology.
  • the numerology is defined in 3GPP TS 38.300 and corresponds to one subcarrier spacing in the frequency domain.
  • the wireless communication system 10 may support a frequency band higher than the frequency band of FR2. Specifically, the wireless communication system 10 may support frequency bands exceeding 52.6 GHz and up to 114.25 GHz. Such a high frequency band may be referred to as "FR2x" for convenience.
  • FR2x frequency band exceeding 52.6 GHz
  • CP-OFDM Cyclic Prefix - Orthogonal Frequency Division Multiplexing
  • DFT-S-OFDM Discrete Fourier Transform - Spread - Orthogonal Frequency Division Multiplexing
  • FIG. 3 is a diagram showing a configuration example of a radio frame (system frame), subframe, and slot used in the radio communication system 10. As shown in FIG. 3, one slot is composed of 14 symbols, and the larger (wider) the SCS, the shorter the symbol period (and slot period). However, the SCS is not limited to the intervals (frequency) shown in FIG. 3. For example, 480 kHz, 960 kHz, etc. may be used as the SCS.
  • the number of symbols constituting one slot does not necessarily have to be 14 symbols (for example, it may be 28 or 56 symbols, etc.). Furthermore, the number of slots per subframe may vary depending on the SCS.
  • time direction (t) shown in FIG. 3 may also be called a time domain, symbol period, symbol time, or the like.
  • the frequency direction may be referred to as a frequency domain, a resource block, a subcarrier, a bandwidth part (BWP), or the like.
  • the gNB 100 transmits control information, configuration information, etc. for realizing power saving of the gNB 100 to the UE 200 as a downlink (DL) signal.
  • DL downlink
  • the gNB 100 receives control information for realizing power saving of the gNB 100 as an uplink (UL: Uplink) signal, data signals, information regarding the processing capacity of the UE 200 (terminal capability (information); for example, UE capability), etc.
  • UL Uplink
  • terminal capability information
  • UE capability information
  • Channels used for transmitting DL signals include, for example, data channels and control channels.
  • the data channel may include a physical downlink shared channel (PDSCH)
  • the control channel may include a physical downlink control channel (PDCCH).
  • the gNB 100 transmits control information to the UE 200 using the PDCCH, and transmits a DL data signal using the PDSCH.
  • PDSCH is an example of a downlink shared channel
  • PDCCH is an example of a downlink control channel.
  • PDCCH may be replaced with downlink control information (DCI), control information, etc. transmitted on PDCCH.
  • DCI downlink control information
  • Reference signals included in the DL signal include, for example, DMRS (Demodulation Reference Signal), PTRS (Phase Tracking Reference Signal), CSI-RS (Channel State Information-Reference Signal), SRS (Sounding Reference Signal), and location information. At least one PRS (Positioning Reference Signal) for use may be included.
  • reference signals such as DMRS and PTRS are used to demodulate DL data signals and are transmitted using PDSCH.
  • the UE 200 is a communication device with a wireless communication function, such as a smartphone, a mobile phone, a tablet, a wearable terminal, or a communication module for M2M (Machine-to-Machine).
  • a wireless communication function such as a smartphone, a mobile phone, a tablet, a wearable terminal, or a communication module for M2M (Machine-to-Machine).
  • the UE 200 utilizes various communication services provided by the wireless communication system 10 by receiving a control signal or data signal from the gNB 100 via DL and transmitting the control signal or data signal to the gNB 100 via UL. Further, UE 200 receives various reference signals transmitted from gNB 100, and measures channel quality based on the reception results of the reference signals.
  • the UE 200 receives control information, setting information, etc. for realizing power saving of the gNB 100 from the gNB 100 as a DL signal.
  • the UE 200 transmits control information for realizing power saving of the gNB 100, data signals, terminal capability information of the UE 200, etc. to the gNB 100 as a UL signal.
  • Channels used for transmitting UL signals include, for example, data channels and control channels.
  • the data channel may include a physical uplink shared channel (PUSCH)
  • the control channel may include a physical uplink control channel (PUCCH).
  • the UE 200 transmits control information using the PUCCH, and transmits a UL data signal using the PUSCH.
  • PUSCH is an example of an uplink shared channel
  • PUCCH is an example of an uplink control channel.
  • a shared channel may be called a data channel.
  • PUSCH or PUCCH may be replaced with uplink control information (UCI), control information, etc. transmitted on PUSCH or PUCCH.
  • UCI uplink control information
  • the reference signal included in the UL signal may include, for example, at least one of DMRS, PTRS, CSI-RS, SRSRS, and PRS for location information.
  • reference signals such as DMRS and PTRS are used to demodulate UL data signals and are transmitted using PUSCH.
  • DRX discontinuous reception
  • CDRX connected mode discontinuous reception
  • FIG. 4 is a diagram for explaining CDRX in 3GPP Release 15.
  • a terminal In CDRX operation in 3GPP Release 15, a terminal is active during a DRX on-duration in a DRX cycle, and monitors the PDCCH within the DRX on-duration.
  • FIG. 5 is a diagram for explaining WUS in 3GPP Release 16.
  • PDCCH-based WUS can instruct one or more terminals whether the terminal should monitor the PDCCH within the next DRX on period.
  • DCI format 2_6 in which CRC (Cyclic Redundancy Check) is scrambled by PS-RNTI (Power Saving - Radio Network Temporary Identifier) is used as PDCCH-based WUS, and is also called DCP (DCI with CRC scrambled by PS-RNTI).
  • CRC Cyclic Redundancy Check
  • PS-RNTI Power Saving - Radio Network Temporary Identifier
  • the WUS monitoring occasion is set by an offset from the DRX on period based on the terminal capability. If the WUS indicates "Not Active" (i.e., the device is not transmitting or receiving data), the device should skip monitoring during the DRX on period and immediately enter sleep mode. I can do it.
  • a default terminal operation may be set in case PDCCH-based WUS is not detected due to, for example, a detection error.
  • the DCI format 2_6 includes a 1-bit Wake-up Indication indicating “active” or “inactive”. Note that active may be read as enabled, enabled, activated, etc., and inactive may be read as disabled, invalidated, sleep, etc.
  • XR Extended Reality
  • reducing terminal power consumption in consideration of XR traffic requires responding to the characteristics of XR services.
  • the characteristics of the XR service include periodicity of XR traffic, occurrence of multiple flows, occurrence of jitter, latency, reliability, etc.
  • XR (Extended Reality) is a general term for technologies such as VR (Virtual Reality), AR (Augmented Reality), and MR (Mixed Reality).
  • the DRX cycle and DRX on duration shown in FIG. 5 may be considered to be the same as the CDRX cycle and CDRX on duration in the following description, respectively.
  • FIG. 6 is a diagram showing an example of the relationship between the reception period of the CDRX function and the arrival timing of XR traffic.
  • FIG. 6 shows the cycle of the sleep period and active period in the CDRX function, and the arrival timing of XR traffic.
  • FIG. 6 shows an example in which the period in the CDRX function is 20 ms and the arrival period of XR traffic is 16.67 ms.
  • the arrival cycle of XR traffic is a non-integer value such as 6.67ms, 8.33ms, or 16.67ms
  • the cycle for the CDRX function is stipulated to be an integer value such as 10ms or 20ms. Therefore, the XR traffic arrival cycle and the cycle of the CDRX function are not aligned. Therefore, as shown in FIG. 6, since XR traffic does not arrive during the active period of the cycle in the CDRX function, the terminal may not be able to receive the XR traffic.
  • Jitter is expected to occur in XR traffic. Jitter corresponds to minute fluctuations in the time direction with respect to the original arrival timing of XR traffic. For example, for an XR traffic arrival period of 16.67ms, a maximum jitter of [-4, 4]ms is assumed.
  • This embodiment proposes a method of appropriately adapting the CDRX on duration (or CDRX active period) in order to avoid XR traffic arriving outside the CDRX on duration period.
  • adapting the CDRX on duration (or CDRX active period) means, for example, adapting the CDRX on duration (or CDRX active period) so that the time when XR traffic arrives is included in the CDRX on duration (or CDRX active period). This may correspond to adapting the period).
  • adapting the CDRX on duration (or the CDRX active period) will be referred to as adaptation regarding the CDRX on duration (or the CDRX active period).
  • adaptation regarding CDRX on duration may be abbreviated as "adaptation”.
  • CDRX on duration may be read as CDRX active period.
  • CDRX on duration may be interchanged with other expressions such as on period, active period, and startup period.
  • CDRX on duration will be abbreviated as on period as appropriate.
  • a period different from the CDRX on duration may be described as a sleep period.
  • the on period is an example of a period during which the terminal can receive signals
  • the sleep period is an example of a period during which the terminal is not able to receive signals. Note that there may be signals that the terminal can receive during the sleep period.
  • Proposal 1 describes a method for notifying or specifying adaptation (information regarding) CDRX on duration.
  • the terminal may be notified of adaptation regarding CDRX on duration, or it may be predefined.
  • the base station or network side may notify the terminal about adaptation.
  • the terminal receives the notification about the adaptation and applies the adaptation regarding CDRX on duration.
  • the terminal applies adaptation regarding CDRX on duration according to the regulations.
  • the notification regarding adaptation may be replaced with a notification of information regarding adaptation.
  • the information notified to the terminal may be included in a signal transmitted from the base station to the terminal, for example. Notifying information to a terminal may correspond to receiving information at the terminal.
  • regulations may correspond to what is defined by specifications, rules, etc., or the defined contents thereof. Alternatively, the regulation may correspond to being implemented in a communication device (eg, a base station or a terminal) or an implemented function thereof. Note that, for example, specifying a certain content may not be accompanied by being notified of the content, or may be accompanied by being notified of the content. Also, for example, being notified of a certain content may correspond to being notified of the specified content after the content has been specified, or the information may not be specified. .
  • Proposals 2 to 4 indicate elements to be adapted as adaptations regarding CDRX on duration.
  • the adapted element may be an element (or parameter) that is adjusted.
  • Proposal 2 as an example of adaptation regarding CDRX on duration, an example is shown in which adaptation of the start position of CDRX on duration is notified or specified. In other words, Proposal 2 shows an example in which the parameter to be adjusted is the starting position of CDRX on duration.
  • Proposal 3 as an example of adaptation regarding CDRX on duration, an example is shown in which adaptation of the period length of CDRX on duration is notified or specified. In other words, Proposal 3 shows an example in which the parameter to be adjusted is the period length of CDRX on duration.
  • Proposal 4 as an example of adaptation regarding CDRX on duration, an example is shown in which adaptation of CDRX cycle length is notified or specified. In other words, Proposal 4 shows an example in which the parameter to be adjusted is the CDRX cycle length.
  • adaptation may be replaced with other expressions such as control, adjustment, management, change, arrangement, and rearrangement.
  • adaptation regarding CDRX on duration may be replaced with expressions such as control regarding CDRX on duration or adjustment regarding CDRX on duration.
  • Proposal 1 adaptation regarding CDRX on duration may be notified to the terminal or may be specified.
  • the method of notification regarding adaptation regarding CDRX on duration is not particularly limited.
  • DCI downlink control information
  • information exchanged in the MAC (medium access control) layer e.g., MAC CE (control element)
  • RRC radio resource control
  • Adaptation regarding CDRX on duration may be notified.
  • the information signaled in RRC may be referred to as an information element of RRC, or may be referred to as information notified by RRC signaling.
  • Notification of adaptation regarding CDRX on duration may correspond to notification of information regarding adaptation.
  • the information regarding adaptation may include at least one of the following: information indicating whether or not adaptation is applied, information indicating the position of CDRX on duration to which adaptation is applied, information indicating an element to be adapted, and the like.
  • conditions and/or procedures for performing adaptation regarding CDRX on duration may be defined.
  • the conditions and/or procedures for performing adaptation regarding CDRX on duration may be conditions and/or procedures for determining whether or not to perform adaptation.
  • the conditions and/or procedures for performing adaptation regarding CDRX on duration are the conditions and/or procedures for determining the position of CDRX on duration to which adaptation is applied when information regarding adaptation is notified. There may be.
  • the conditions and/or procedures for performing adaptation regarding CDRX on duration may be conditions and/or procedures for determining (or adjusting) elements (parameters) for performing adaptation.
  • Information regarding adaptation may be notified using multiple methods. For example, part of the information regarding adaptation may be notified by the DCI, and the remaining part may be notified by RRC signaling. Further, part of the information regarding adaptation may be defined in advance, and the remaining part may be notified by the DCI.
  • Proposal 1-1 describes two examples of notification methods.
  • FIG. 7 is a diagram showing a first example of the notification method.
  • FIG. 7 shows two examples, Example 1 and Example 2.
  • the horizontal axis of each example in FIG. 7 represents a time axis.
  • Each example in FIG. 7 shows that CDRX on duration and CDRX sleep period occur periodically.
  • CDRX on duration may be abbreviated as “on period”
  • CDRX sleep period may be abbreviated as “sleep period”.
  • one rectangle corresponds to a time section having a certain time width.
  • one rectangle may be described as one "unit section.”
  • one unit interval does not have to correspond to a specific time interval defined by specifications or the like.
  • one unit period in each example of FIG. 7 does not have to correspond to a specific time period such as one symbol, one slot, or one frame.
  • one unit interval may correspond to a specific time interval defined by specifications etc., multiple unit intervals may correspond to one specific time interval, or a specific first The number of unit intervals may correspond to a specific second number of time intervals. Note that the first number may be different from the second number.
  • each example in FIG. 7 shows an example in which one cycle (CDRX cycle) includes an on period having two unit intervals and a sleep period having a length of three unit intervals, but the present disclosure It is not limited to this.
  • an identification number for identifying the on period is shown for convenience of explanation.
  • identification numbers are shown for convenience of explanation, but when the terminal performs reception control using the CDRX function, the identification numbers do not need to be set for each on period.
  • the identification numbers in each example of FIG. 7 are numbers based on the relative positional relationship of each on period, and do not have to be numbers indicating absolute positions. For example, in each example of FIG. 7, the on period labeled "#1" does not have to indicate the earliest on period in the terminal.
  • on-period #1 the on-period marked with "#1" will be referred to as on-period #1.
  • example 1 of FIG. 7 information regarding adaptation is notified during on period #1.
  • the terminal receives information regarding adaptation during on-period #1, and applies adaptation during on-period #2.
  • applying adaptation in the on-period #2 may correspond to adjusting parameters regarding the on-period #2.
  • the parameter regarding on-period #2 may be at least one of the start position, end position, and length of on-period #2.
  • information regarding the received adaptation may be included in a control channel (for example, PDCCH), a data channel (for example, PDSCH), or another channel. Further, information regarding the received adaptation may be included in at least one of, for example, DCI, information exchanged in the MAC layer (eg, MAC CE), and information signaled in RRC.
  • a control channel for example, PDCCH
  • a data channel for example, PDSCH
  • another channel for example, a control channel (for example, PDCCH), a data channel (for example, PDSCH), or another channel.
  • information regarding the received adaptation may be included in at least one of, for example, DCI, information exchanged in the MAC layer (eg, MAC CE), and information signaled in RRC.
  • information regarding adaptation is notified during the sleep period between on-period #1 and on-period #2.
  • information regarding adaptation is notified by DCI format 2_6 (for example, wake up signal) that the terminal can receive during the sleep period.
  • the terminal receives information regarding adaptation through DCI format 2_6, and applies adaptation during on period #2.
  • Example 2 in FIG. 7 shows an example in which information regarding adaptation is notified by DCI format 2_6, the present disclosure is not limited to this.
  • information regarding adaptation may be notified by at least one of the notification methods in DCI, MAC, and RRC.
  • Information regarding adaptation may be notified during the on period, as shown in Example 1 of FIG. 7, or may be notified during the sleep period, as shown in Example 2 of FIG.
  • the information regarding adaptation may be notified before performing the operation of the CDRX function (for example, before performing intermittent reception).
  • the terminal applies adaptation during the on period (on period #2 in FIG. 7) immediately after the timing at which information regarding adaptation is received. Thereby, the terminal can promptly perform reception processing appropriately during the on period in which adaptation is applied. Furthermore, since signals can be received quickly, reception delays can be avoided.
  • FIG. 8 is a diagram showing a second example of the notification method. Similar to FIG. 7, FIG. 8 shows two examples, Example 1 and Example 2. The horizontal axis of each example in FIG. 8 represents a time axis.
  • FIG. 8 shows an example in which one cycle (CDRX cycle) includes an on period having two unit sections and a sleep period having a length of three unit sections, as in FIG. 7.
  • FIG. 7 shows an example in which adaptation is applied in on-period #2, which corresponds to the on-period immediately after the information regarding adaptation is notified
  • FIG. An example will be shown in which adaptation is applied not in #2 but in on-period #3, which corresponds to the next on-period.
  • example 1 of FIG. 8 information regarding adaptation is notified during on period #1.
  • the terminal receives information regarding adaptation during on-period #1, and applies adaptation during on-period #3.
  • information regarding adaptation is notified during the sleep period between on-period #1 and on-period #2.
  • information regarding adaptation is notified by DCI format 2_6 (for example, wake up signal) that the terminal can receive during the sleep period.
  • the terminal receives information regarding adaptation through DCI format 2_6, and applies adaptation during on period #3.
  • on-period the adaptation is applied to may be notified or may be specified.
  • information indicating which on-period to which adaptation is applied may be described as information regarding the on-period to which adaptation is applied.
  • Information regarding the on-period during which adaptation is applied may be included in the information regarding adaptation, or may be notified separately from the information regarding adaptation.
  • Information regarding the on-period to which adaptation is applied may or may not be notified to the terminal.
  • information indicating that the on-period to which adaptation is applied is on-period #3 may or may not be notified to the terminal.
  • the terminal may determine the on-period to apply the adaptation based on the information regarding the on-period to apply the adaptation.
  • the terminal may determine the on-period to apply the adaptation based on the timing of receiving the information regarding the adaptation and specific conditions. In other words, in this case, the terminal may determine the on-period to which the adaptation is applied based on the rules regarding which on-period the adaptation is applied to.
  • the terminal is configured to operate in an on-period (on-period #3 in FIG. 8) after a specific time (for example, a specific number of on-periods) has elapsed since receiving information regarding adaptation.
  • Apply adaptation This allows adaptation to be applied at appropriate timing, allowing for appropriate reception processing.
  • this allows you to control the time from receiving information about adaptation to applying adaptation, so you can secure the time required for the terminal to start applying adaptation, and you can receive signals during the on period when adaptation is applied. , it is possible to perform reception processing appropriately.
  • Proposal 1-2 information regarding adaptation can be notified at any timing before the on-period in which adaptation is applied, allowing for flexible notification. For example, early notifications can be made so that adaptations can be applied in advance to match the expected timing of XR traffic. Furthermore, since information regarding adaptation can be notified all at once in accordance with the timing at which other control information is notified, efficient notification is possible.
  • FIG. 9 is a diagram showing a third example of the notification method.
  • FIG. 9 shows two examples, Example 1 and Example 2.
  • the horizontal axis of each example in FIG. 9 represents a time axis.
  • FIG. 9 is an example in which one cycle (CDRX cycle) includes an on period having two unit intervals and a sleep period having a length of three unit intervals, as in FIGS. 7 and 8. shows.
  • example 1 of FIG. 9 information regarding adaptation is notified during on period #1.
  • the terminal receives information regarding adaptation during on-period #1, applies adaptation during on-period #3, and does not apply adaptation during on-period #2 and after on-period #4.
  • the terminal may apply adaptation only during on-period #3.
  • example 2 of FIG. 9 information regarding adaptation is notified during on period #1.
  • the terminal receives information regarding adaptation during on-period #1, applies adaptation during on-periods #2 and #3, and does not apply adaptation after on-period #4.
  • the terminal may apply adaptation only during on-periods #2 and #3.
  • the adaptation is applied only to the notified on-period.
  • adaptation may be applied to the notified on-period, and adaptation may not be applied to an on-period that is different from the notified on-period.
  • the adaptation may be applied only to the specified on-period.
  • adaptation may be applied to the specified on-period, and adaptation may not be applied to an on-period that is different from the specified on-period.
  • the adaptation may be notified or specified which on-period is one or more on-periods to which adaptation is applied.
  • information indicating which one or more on periods to which the adaptation is applied may be included in the information regarding the on periods to which the adaptation is applied.
  • At least one of the number of on-periods to which adaptation is applied, the length of time to which adaptation is applied, the start position of multiple on-periods to which adaptation is applied, and the end position of on-periods to which adaptation is applied, etc. may be notified or prescribed. Further, the cycle at which adaptation is applied may be notified or may be specified.
  • the period in which adaptation is applied may indicate, for example, that out of four temporally adjacent on-periods, adaptation is applied during one on-period and no adaptation is applied during the remaining three.
  • start position of the on-period to which adaptation is applied and/or the end position of the on-period to which adaptation is applied may be notified as an absolute position or may be specified.
  • start position of the on-period to which adaptation is applied and/or the end position of the on-period to which adaptation is applied may be notified as a relative position with respect to a certain position, or may be specified. good.
  • a certain position may be, for example, the position (or timing) at which information regarding adaptation is received, the position (or timing) at which reception by CDRX is started, or any other position. (or timing).
  • the start position of the on-period to which adaptation is applied and/or the end position of the on-period to which adaptation is applied may be represented by an SFN (System Frame Number) position, a slot position, and a symbol position. .
  • SFN System Frame Number
  • the applicable period for which adaptation is applied may be notified or stipulated. Further, for example, the application period during which adaptation is applied may be notified using a timer, or may be defined.
  • each example in FIG. 9 shows an example in which information regarding adaptation is notified during the on period (for example, on period #1), the present disclosure is not limited to this.
  • information regarding adaptation may be notified by DCI format 2_6.
  • the terminal applies adaptation during one or more on-periods based on regulations and/or notifications.
  • the terminal can Appropriate reception processing can be performed.
  • information regarding adaptation for multiple on-periods can be notified all at once, the number of notifications of information regarding adaptation can be reduced, and an increase in power consumption required for receiving information can be suppressed.
  • Proposal 1-4 shows an example where adaptation is applied continuously.
  • FIG. 10 is a diagram showing a fourth example of the notification method.
  • FIG. 10 shows two examples, Example 1 and Example 2.
  • the horizontal axis of each example in FIG. 10 represents a time axis.
  • FIG. 10 is an example in which one cycle (CDRX cycle) includes an on period having two unit intervals and a sleep period having a length of three unit intervals, as in FIGS. 7 to 9. shows.
  • Example 1 of FIG. 10 information regarding adaptation is notified during ON period #1.
  • the terminal receives information regarding adaptation in on-period #1, and applies adaptation in each on-period after on-period #2.
  • example 2 of FIG. 10 information regarding adaptation is notified during on period #1.
  • the terminal receives information regarding adaptation in on-period #1, and applies adaptation in each on-period after on-period #3.
  • the notified on-period and the on-period after the on-period concerned are Adaptation may be continuously applied to.
  • Example 1 of FIG. 10 if the terminal is notified that the on-period to which adaptation is applied is on-period #2, the terminal will Continuously apply adaptation.
  • the adaptation may be applied to the specified on-period and the on-period subsequent to the specified on-period.
  • Example 1 of FIG. 10 if it is specified that the on-period to which adaptation is applied is on-period #2, the terminal continuously Apply adaptation.
  • Whether or not to apply adaptation continuously may be notified or stipulated. For example, whether or not to continuously apply adaptation may be switched based on specific conditions. For example, the terminal may decide whether to continuously apply adaptation based on specific conditions.
  • each example in FIG. 10 shows an example in which information regarding adaptation is notified during the on period (for example, on period #1), the present disclosure is not limited to this.
  • information regarding adaptation may be notified by DCI format 2_6.
  • the terminal applies adaptation during multiple continuous on-periods based on regulations and/or notifications.
  • the terminal can process the reception appropriately during multiple on-periods using adaptation. It can be performed.
  • information regarding adaptation for multiple on-periods can be notified all at once, the number of notifications of information regarding adaptation can be reduced, and an increase in power consumption required for receiving information can be suppressed.
  • switching the adaptation may correspond to, for example, switching the element to be adapted and/or switching the content of the adaptation.
  • Proposal 1-5 shows an example in which a time constraint is defined from when information regarding adaptation is notified until application of adaptation can start.
  • time constraint may be replaced with other expressions such as timeline or application delay.
  • Proposal 1-5 includes Alternation 1 (Alt.1) and Alternation 2 (Alt.2) shown below.
  • the destination to which the adaptation is applied may be notified so as to satisfy time constraints.
  • the terminal does not expect to be notified of an adaptation destination that does not satisfy the time constraints.
  • it may be assumed that the terminal is notified of the application destination of adaptation that satisfies the time constraints.
  • the application destination of the adaptation may be at least one on-period to which the adaptation is applied.
  • the terminal may start applying the adaptation after being notified of the information regarding the adaptation and after satisfying the time constraints. In this case, the terminal does not start applying the adaptation until the time constraint is satisfied after the terminal is notified of the information regarding the adaptation.
  • the terminal does not have to judge whether or not the time constraints are satisfied; instead, the base station decides where to apply the adaptation that satisfies the time constraints, and applies the adaptation that satisfies the time constraints to the terminal. Notify the applicable destination.
  • the terminal determines whether or not the time constraints are satisfied, and based on the determination, determines where to apply adaptation.
  • FIG. 11 is a diagram showing a fifth example of the notification method.
  • FIG. 11 shows two, Alt.1 and Alt.2.
  • the horizontal axes of Alt.1 and Alt.2 in FIG. 11 represent the time axis.
  • one cycle has an on period with two unit intervals and a length of three unit intervals, as in FIGS. 7 to 10.
  • An example including a sleep period is shown below.
  • time sections that are restricted as "time constraints" are shown.
  • on-period #2 is an on-period within a time interval restricted as a "time constraint.” That is, on-period #2 is an on-period that does not satisfy the time constraints. Therefore, the on-period #2 is not included in the application destination of adaptation. In this case, the terminal does not need to expect notification of information indicating that the on-period #2 is the target of adaptation. Further, in this case, the terminal may assume notification of information indicating that the on-periods after on-period #3 are to which adaptation is applied.
  • on-period #2 is an on-period within a time interval restricted as a "time constraint.” That is, on-period #2 is an on-period that does not satisfy the time constraints.
  • the terminal determines that the on period #2 is an on period that does not satisfy the time constraints, and determines that the on period #3 is an on period that satisfies the time constraints. Then, the terminal applies adaptation after ON period #3.
  • FIG. 11 shows an example in which adaptation is applied even after the ON period #4 that satisfies the time constraint
  • a range to which adaptation is applied may be defined or notified within the on-period that satisfies the time constraints.
  • adaptation is applied to K (K is an integer greater than or equal to 1) on-periods starting from the earliest in terms of time among the on-periods that satisfy the time constraints. .
  • time constraints may be specified or notified.
  • at least one of the length of time restricted as a time constraint, the start position (or reference position) of a time restricted as a time constraint, etc. may be defined or notified.
  • the starting position (or reference position) of the time constrained as a time constraint may be, for example, the timing at which the information regarding adaptation is notified, or the starting position or end position of the on-period at which the information regarding adaptation is notified. There may be.
  • FIG. 11 shows an example in which information regarding adaptation is notified during the on period (for example, on period #1), the present disclosure is not limited to this.
  • information regarding adaptation may be notified by DCI format 2_6.
  • the start position (or reference position) of the time constrained as a time constraint may be the timing at which DCI format 2_6 is notified, or the timing that occurs immediately after the timing at which DCI format 2_6 is notified. It may be the start position or end position of the period.
  • the terminal performs adaptation during the on period (on period #3 in FIG. 11) after the time constrained based on the time constraint has elapsed after receiving information regarding adaptation. Apply.
  • This allows adaptation to be applied at appropriate timing, allowing for appropriate reception processing.
  • this allows you to control the time from receiving information about adaptation to applying adaptation, so you can secure the time required for the terminal to start applying adaptation, and you can receive signals during the on period when adaptation is applied. , it is possible to perform reception processing appropriately.
  • Proposal 1 notifies or stipulates adaptation regarding CDRX on duration to the terminal.
  • the terminal after receiving information regarding adaptation, the terminal applies adaptation during an on period at an appropriate timing. Thereby, it is possible to avoid a difference between the arrival timing of a signal from the base station and the reception timing (reception period) of the terminal, and it is possible to appropriately perform reception processing at the terminal.
  • information indicating whether or not proposal 1 is supported may be specified or may be notified.
  • UE capability indicating whether or not Proposal 1 can be supported may be defined or notified.
  • UE capability is an example of capability information of a terminal, and may be notified from the terminal to the base station.
  • UE capability indicating whether or not each of the examples shown in Proposals 1-1 to 1-5 or each Alt can be supported may be defined or notified.
  • the UE capability that indicates whether two or more of each Alt can be supported is specified.
  • the UE capability that indicates whether or not the two or more can be supported is specified.
  • UE capability indicating whether or not to support notification of information regarding adaptation during the on period may be defined.
  • UE capability indicating whether or not to support notification of information regarding adaptation by DCI format 2_6 may be defined.
  • These UE capabilities may be defined as individual UE capabilities, or may be defined as a common UE capability.
  • UE capabilities regarding time constraints until the start of application of adaptation may be defined or notified.
  • a time constraint that a terminal can support may be defined as UE capability, or may be notified.
  • a plurality of UE types that can support different time constraints may be defined, and information indicating which UE type the terminal belongs to among the defined UE types may be notified as UE capability.
  • the different time constraints may be time constraints in which at least one of the length of the time constrained as the time constraint and the start position (or reference position) of the time constrained as the time constraint are different from each other.
  • Proposal 1 an example was shown in which information regarding adaptation is notified in one on period or sleep period (for example, DCI format 2_6), but the present disclosure is not limited to this.
  • information regarding adaptation may be notified in multiple on periods, multiple sleep periods (for example, DCI format 2_6), or a combination of on periods and sleep periods.
  • the method to be notified may be defined in advance, the terminal may be notified, or the base station may be notified as the UE capability of the terminal.
  • Proposal 2-1 the terminal shifts the start position of the on-period during the on-period in which adaptation is applied.
  • shifting the start position of the on-period corresponds to shortening or extending the length of the sleep period immediately before the on-period to which adaptation is applied. Good too.
  • on-period #X (X is an integer of 1 or more).
  • an on-period that follows the on-period #X may be written as an on-period #Y (Y is an integer larger than X).
  • the number of on-periods (for example, the number of X) to which adaptation is applied may be one or more. Further, the number of on-periods that follow on-period #X (for example, the number Y) may be one or more. When a plurality of Xs exist, Y may be an integer larger than the largest X among the plurality of Xs.
  • on-period #X may correspond to the earliest on-period in terms of time among the plurality of on-periods. Further, in this case, it may be instructed that adaptation is applied to a part of the on-period #Y by notification or regulation.
  • the length of the on-period #X does not need to be changed.
  • the length of the on period #X may be the same length as when no adaptation is applied.
  • the end position of the on-period #X may be shifted in accordance with the change in the starting position of the on-period #X.
  • the shift amount and time direction for shifting the start position of ON period #X may be the same as the shift amount and time direction for shifting the end position of ON period #X, respectively. .
  • one of the Alts shown below is applied to the start position of the on period (for example, on period #Y) that follows the on period (for example, on period #Y) to which adaptation is applied (for example, on period #X). It's fine.
  • the starting position of the on-period #Y when no adaptation is applied is maintained.
  • the length of the sleep period between the on period #X and the next on period #Y after the on period #X is extended.
  • the amount of change in the length of the sleep period may be the same as the amount of shift of the start position of the on period #X.
  • extension of the length of the period may be simply stated as an extension of the period. Further, “extension” may be replaced with another expression such as “increase”, “increase”, or “enlargement”.
  • shortening the length of a period may be simply described as shortening the period. Further, “shortening” may be replaced with another expression such as “reduction” or “reduction”. Further, the length of a period may be described as a period length or an interval.
  • the starting position of the on-period #Y is also shifted in the same way as the starting position of the on-period #X.
  • the shift amount of the start position of the on period #Y may be the same as the shift amount of the start position of the on period #X.
  • FIG. 12 is a diagram showing a first example of application of adaptation.
  • FIG. 12 shows an example in which adaptation is not applied (“no adaptation”) and an example in which adaptation is applied in ON period #2 (“with adaptation”).
  • no adaptation an example in which adaptation is applied in ON period #2
  • with adaptation an example in which adaptation is applied in ON period #2
  • three examples, Alt.1 to Alt.3, are shown separately. Note that the horizontal axis in FIG. 12 represents the time axis.
  • one cycle (CDRX cycle) when adaptation is not applied has an on period with two unit intervals and a length of three unit intervals.
  • An example including a sleep period is shown below.
  • adaptation is applied during on period #2.
  • the on period #X corresponds to the on period #2
  • the on period #Y corresponds to the on period #3 and thereafter.
  • the starting position of on-period #2 is shifted forward by one unit section. Note that the amount to be shifted is not limited to this. Note that the start position of ON period #2 is shifted forward by one unit section, which means that the length of the sleep period before ON period #2 is shortened by one unit section. It may be equivalent to
  • the starting position of on period #3 is maintained at the same position as in the example where adaptation is not applied.
  • the fact that the starting position of on period #3 is maintained at the same position as in the example where adaptation is not applied means that the length of the sleep period between on period #2 and on period #3 is extended. It may be equivalent.
  • the start and end positions of the on-period #Y that follows the on-period #X to which adaptation is applied are maintained at the same position as the on-period #Y when adaptation is not applied.
  • the present disclosure is not limited thereto. For example, even if the start and end positions of the on-period #Y that follows the on-period #X to which adaptation is applied gradually approach the same position as the start position of the on-period #Y when no adaptation is applied, good.
  • the start position and end position of ON period #2 are shifted forward by the shift amount ⁇ T2
  • the start position and end position of ON period #3 are shifted forward by shift amount ⁇ T2.
  • the start position and end position of on-period #4 are maintained at the same positions as on-period #4 when adaptation is not applied. In this way, the farther the on period is from the on period #2, the closer the on period is to the same position as the on period #Y when adaptation is not applied.
  • the CDRX cycle after ON period #2 is maintained at the same cycle as in the example where adaptation is not applied.
  • the start positions of each of the on-periods after on-period #3 are shifted forward by one unit interval with respect to the respective start positions when adaptation is not applied.
  • Alt. 2 shows an example in which the cycle is maintained when adaptation is not applied
  • the present disclosure is not limited to this.
  • the period may be shifted stepwise to approach the period when adaptation is not applied.
  • the start position and end position of ON period #2 are shifted forward by the shift amount ⁇ T2 (one unit interval in FIG. 12)
  • the start position and end position of period #3 may be shifted forward by a shift amount ⁇ T3 smaller than shift amount ⁇ T2 (for example, by half the length of the unit section).
  • the start position and end position of on-period #4 are maintained at the same positions as on-period #4 when adaptation is not applied. In this way, the farther the CDRX cycle is from on-period #2, the closer the cycle may be to the same cycle as when adaptation is not applied.
  • the CDRX cycle after on period #2 is maintained at the same cycle as the cycle when adaptation is applied.
  • the period when adaptation is applied may be a period including an on period having two unit sections and a sleep period having a length of two unit sections.
  • the CDRX cycle after on period #2 is an on period with a length of two unit intervals, and a sleep cycle with a length of two unit intervals. period.
  • FIG. 12 shows an example in which the start position is shifted
  • the present disclosure is not limited to this.
  • the end position may be shifted instead of the start position.
  • An example in which the end position is shifted will be explained using FIG. 13.
  • FIG. 13 is a diagram showing a second example of application of adaptation. Similar to FIG. 12, FIG. 13 shows an example in which adaptation is not applied ("no adaptation") and an example in which adaptation is applied in the on period #2 ("with adaptation"). In the example in which adaptation is applied in the on period #2, three examples from Alt.1 to Alt.3 are shown separately, similar to FIG. 12. Note that the horizontal axis in FIG. 13 represents the time axis.
  • one cycle (CDRX cycle) when no adaptation is applied has an on period with two unit intervals and a length of three unit intervals.
  • An example including a sleep period is shown below.
  • the starting position of ON period #2 is shifted backward by one unit section. Note that the amount to be shifted is not limited to this. Note that the start position of ON period #2 is shifted backward by one unit section, which means that the length of the sleep period before ON period #2 is extended by one unit section. It may be equivalent to
  • the starting position of on period #3 is maintained at the same position as in the example where adaptation is not applied.
  • the fact that the starting position of on period #3 is maintained at the same position as in the example where adaptation is not applied means that the length of the sleep period between on period #2 and on period #3 is shortened. It may be equivalent.
  • the CDRX cycle after on period #2 is maintained at the same cycle as the cycle when adaptation is applied.
  • the period when adaptation is applied may be a period including an on period having two unit sections and a sleep period having a length of four unit sections.
  • the CDRX cycle after on period #2 is an on period with a length of two unit intervals and a sleep cycle with a length of four unit intervals. period.
  • the terminal shifts the position (start position and end position) of the on-period to which adaptation is applied in the time direction. Thereby, it is possible to avoid a difference between the arrival timing of a signal from the base station and the reception timing (reception period) of the terminal, and the terminal can appropriately perform reception processing. Furthermore, in Proposal 2-1, the length of the on period is not changed, so it is possible to suppress an increase in power consumption in the terminal.
  • Proposal 2-1 shows an example in which the start position of the on-period #X is shifted and the end position of the on-period #X is shifted in the on-period (on-period #X) to which adaptation is applied.
  • Proposal 2-2 in the on-period (on-period #X) where adaptation is applied, the starting position of on-period #X is shifted, while the ending position of on-period #X is the same as when adaptation is not applied.
  • the length of on-period #X is changed by shifting the starting position of on-period #X and maintaining the ending position of on-period #X at the same position as when adaptation is not applied.
  • one of the following Alts is applied to the starting position of the on period (for example, on period #Y) that follows the on period (for example, on period #X) to which adaptation is applied. It's fine.
  • the starting position of the on-period #Y is shifted in the same way as the starting position of the on-period #X. Then, the end position of the on-period #Y is also shifted in the same way as the starting position of the on-period #X.
  • the shift amount of the start position and the shift amount of the end position of the on period #Y may be the same as the shift amount of the start position of the on period #X.
  • FIG. 14 is a diagram showing a third example of application of adaptation.
  • FIG. 14 shows an example in which adaptation is not applied (“no adaptation”) and an example in which adaptation is applied in ON period #2 (“with adaptation”).
  • no adaptation an example in which adaptation is applied in ON period #2
  • with adaptation an example in which adaptation is applied in ON period #2
  • three examples, Alt.1 to Alt.3, are shown separately. Note that the horizontal axis in FIG. 14 represents the time axis.
  • one cycle (CDRX cycle) when adaptation is not applied has an on period with two unit intervals and a length of three unit intervals.
  • An example including a sleep period is shown below.
  • the starting position of on-period #2 is shifted forward by one unit section.
  • the amount to be shifted is not limited to this.
  • the start position of ON period #2 is shifted forward by one unit section, which means that the length of the sleep period before ON period #2 is shortened by one unit section. It may be equivalent to
  • the start and end positions of ON period #3 are maintained at the same positions as in the example where adaptation is not applied.
  • the fact that the starting position of on period #3 is maintained at the same position as in the example where adaptation is not applied means that the length of the sleep period between on period #2 and on period #3 is maintained. It may be equivalent.
  • the start and end positions of the on-periods after on-period #3 are not adapted, similarly to the shift of the start position of on-period #2. For the case, it is shifted forward by one unit interval. In other words, in this case, the sleep period between ON period #2 and ON period #3 is shortened by one unit section.
  • adaptation is applied in each of the on-periods after on-period #3.
  • the start position of the on-period after on-period #3 is shifted forward by one unit interval compared to the case where adaptation is not applied, similar to the shift of the start position of on-period #2.
  • the end position of the on-periods after on-period #3 is maintained at the same position as when adaptation is not applied, similar to the end position of on-period #2.
  • the cycle when adaptation is applied is maintained in each CDRX cycle.
  • the period when adaptation is applied may be a period including an on period having three unit sections and a sleep period having a length of two unit sections.
  • the CDRX cycle after on period #2 is an on period with a length of 3 unit intervals and a sleep cycle with a length of 2 unit intervals. period.
  • the terminal shifts one of the start position and end position of the on-period to which adaptation is applied in the time direction, and maintains the other at the same position as when adaptation is not applied. Thereby, it is possible to avoid a difference between the arrival timing of a signal from the base station and the reception timing (reception period) of the terminal, and the terminal can appropriately perform reception processing. Furthermore, in Proposal 2-2, only one of the start position and end position of the on-period to which adaptation is applied is shifted in the time direction, so that control can be easily performed. Furthermore, in Proposal 2-2, the length of some of the on-periods is changed and the length of the remaining on-periods is not changed, so that it is possible to suppress an increase in power consumption in the terminal.
  • the terminal moves the on period to an appropriate timing (or appropriate period), extends the on period, or shortens the on period. Thereby, it is possible to avoid a difference between the arrival timing of a signal from the base station and the reception timing (reception period) of the terminal, and it is possible to appropriately perform reception processing at the terminal.
  • the amount of shift to shift the position of the on-period to which adaptation is applied, and the direction in which the position of the on-period to which adaptation is applied is shifted. At least one may be specified or notified.
  • the position of the on-period may be only the start position of the on-period, only the end position, or both the start position and the end position. For example, one of the shift amount for shifting the starting position of the on-period and the direction for shifting the starting position of the on-period may be notified, and the other may be specified.
  • the shift amount for shifting the start position of the on-period may be defined as a fixed amount, and information indicating whether the direction of shift is forward or backward in the time direction may be notified.
  • one of the shift amount for shifting the end position of the on-period and the direction for shifting the end position of the on-period may be notified, and the other may be specified.
  • the amount of shift by which the end position of the on period is shifted is defined as a fixed amount, and information indicating whether the direction of shift is forward or backward in time may be notified.
  • the shift amount may be expressed in a specific time unit such as SFN, slot, or symbol, or may be expressed by the absolute value of a time width such as ms or ⁇ s, or may be expressed by a combination of these. Good too.
  • the position (start position and/or end position) of the on-period to which adaptation is applied may be indicated in specific time units such as SFN, slot, and symbol, or may be indicated in absolute time units such as ms and ⁇ s. It may be indicated by a value or a combination of these.
  • Proposal 2 Proposal 2-1 and Proposal 2-2
  • information indicating the position (start position and/or end position) of the on-period to which adaptation is applied may be specified, or may be notified. It's okay.
  • the start position of the on-period may be indicated by a specific time unit such as SFN, slot, symbol, etc., may be indicated by the overall position, or may be indicated by a relative position from a certain reference position. .
  • a certain reference position may be, for example, the previous on-period.
  • the information indicating either the start position or end position of the on-period to which adaptation is applied and the length of the on-period are notified. You may be notified.
  • the terminal changes the period length of the on-period #X in the on-period (for example, on-period #X) to which adaptation is applied.
  • the change in period length may be at least one of extending the period length and shortening the period length.
  • the period length of the on period #X is extended, but the present disclosure is not limited thereto.
  • the length of the on period #X may be shortened.
  • any of the Alts shown below may be applied to the start position of the on period (for example, on period #Y) that follows the on period (for example, on period #X) to which adaptation is applied.
  • Alt shown below may be applied not only to the case of extending the on-period #X but also to the case of shortening the on-period #X.
  • the starting position of the on-period #Y when no adaptation is applied is maintained.
  • the length of the sleep period between the on period #X and the on period #Y is shortened.
  • the length by which the sleep period is shortened may be the same as the length by which the on-period #X is extended.
  • the length of the on-period #Y may be extended similarly to the on-period #X, or the length when adaptation is not applied may be maintained.
  • the starting position of the on-period #Y may be shifted as the length of the on-period #X increases or decreases. In this case, the amount by which the starting position of the on-period #Y is shifted may be the same as the length by which the on-period #X is extended.
  • the length of the on-period #Y may be extended similarly to the on-period #X, or the length when adaptation is not applied may be maintained.
  • FIG. 15 is a diagram showing a fourth example of application of adaptation.
  • FIG. 15 shows an example in which adaptation is not applied (“no adaptation”) and an example in which adaptation is applied in ON period #2 (“with adaptation”).
  • no adaptation an example in which adaptation is applied during on-period #2
  • with adaptation two examples, Alt.1 and Alt.2, are shown separately. Note that the horizontal axis in FIG. 15 represents the time axis.
  • one cycle (CDRX cycle) when adaptation is not applied has an on period with two unit intervals and a length of three unit intervals.
  • An example including a sleep period is shown below.
  • the period length of the on-period #2 is extended by one unit section. Note that the amount of extension is not limited to this. Note that extending the period length of the on-period #2 by one unit section may correspond to shifting the end position of the on-period #2 backward by one unit section.
  • the period length of the on period after on period #3 may be extended similarly to on period #2.
  • the period length of the on period after the on period #3 may be extended similarly to the on period #2.
  • the terminal extends the on period or shortens the on period at an appropriate timing (or an appropriate period). Thereby, it is possible to avoid a difference between the arrival timing of a signal from the base station and the reception timing (reception period) of the terminal, and it is possible to appropriately perform reception processing at the terminal.
  • the length by which the on-period length is extended may be specified or notified.
  • Proposal 3 shows an example in which the length of the on-period is extended, the length of the on-period may be shortened. When the length of the on period is shortened, the shortened length may be specified or notified.
  • adaptation may or may not be applied to the on-period (on-period #Y) that follows the on-period (on-period #X) to which adaptation is applied. .
  • Proposal 4 adaptation of the CDRX cycle length may be notified or specified.
  • FIG. 16 is a diagram showing a fifth example of application of adaptation.
  • FIG. 16 shows an example in which adaptation is not applied (“no adaptation”) and an example in which adaptation is applied (“with adaptation”).
  • no adaptation an example in which adaptation is applied
  • with adaptation an example in which adaptation is applied
  • two examples are shown separately: example 1 in which adaptation is applied in on-period #1 and example 2 in on-period #2. Note that the horizontal axis in FIG. 16 represents the time axis.
  • one cycle (CDRX cycle) when adaptation is not applied has an on period with two unit intervals and a length of three unit intervals.
  • An example including a sleep period is shown below.
  • examples 1 and 2 in which adaptation is applied are CDRXs that include an on period having two unit intervals and a sleep period having a length of two unit intervals by applying adaptation.
  • the common feature is that it has been changed to cycle.
  • examples 1 and 2 in which adaptation is applied differ in the notification of adaptation and the timing of application of adaptation. For example, Example 1 and Example 2 have different on-periods to which adaptation is applied.
  • adaptation is applied in on-period #1, and the length of the sleep period following on-period #1 is shortened by one unit section. Note that the amount of reduction is not limited to this.
  • adaptation is applied in on-period #2, and the length of the sleep period following on-period #2 is shortened by one unit section. Note that the amount of reduction is not limited to this.
  • Examples 1 and 2 of FIG. 16 an example is shown in which the length of the CDRX cycle including an on period to which adaptation is not applied (for example, on period #3) is changed, but when adaptation is applied, the length of the CDRX cycle is changed.
  • the length of the CDRX cycle in the on-period when no adaptation is applied may be the same as the example in which no adaptation is applied (“no adaptation”).
  • the terminal adjusts the length of the CDRX cycle so that the on period is located at an appropriate timing (or an appropriate period).
  • adjusting the length of the CDRX cycle includes at least one of extending and shortening the length of the on period, and lengthening and shortening the length of the sleep period.
  • Each of the above-mentioned proposals may be used in combination.
  • the multiple proposals to be combined may be fixed, or the combination of proposals may be changed.
  • the content of the proposed combination may be specified or notified.
  • each of the above-mentioned proposals may be switched and used.
  • a switching proposal may be specified or notified.
  • UE capability indicating whether or not one of the above-mentioned proposals is supported may be defined or notified. Further, UE capability indicating whether or not multiple of the above-mentioned proposals can be supported may be defined or notified.
  • the unit of time in each of the above examples may be ms, or other units such as s, ⁇ s, or ns. Further, the unit of time may be a specific time unit such as SFN, slot, or symbol.
  • on duration may mean that the on duration timer is running.
  • a method for determining whether or not to apply adaptation a method for determining an on-period to apply adaptation, a method for determining an element to be adapted (for example, a parameter adjusted by adaptation), and The method of adjusting the element (for example, the method of determining the amount by which the starting position is shifted) is not particularly limited. For example, whether or not the base station applies adaptation based on specific criteria (for example, criteria regarding transmission/reception timing, reception quality, traffic volume, reliability required by traffic, etc.), the on-period during which adaptation is applied, At least one of an element to be adapted and a method for adjusting the element may be determined.
  • specific criteria for example, criteria regarding transmission/reception timing, reception quality, traffic volume, reliability required by traffic, etc.
  • the terminal may determine at least one of whether or not to apply adaptation, an on-period to apply adaptation, an element to be adapted, and a method for adjusting the element, based on specific criteria. Further, at least one of whether or not to apply adaptation, an on-period during which adaptation is applied, an element to be adapted, and a method for adjusting the element may be defined in advance.
  • the base station determines to apply adaptation when the timing of XR traffic is not included in the interval of CDRX on duration, and applies adaptation when the timing of XR traffic is included in the interval of CDRX on duration. It may be determined that it does not.
  • the signal transmitted from the base station and received by the terminal during the on period is an XR traffic signal
  • the present disclosure does not apply to this.
  • the signal that the terminal intermittently receives may be different from the XR traffic signal.
  • the CDRX function is used as an intermittent reception method, but the present disclosure is not limited thereto.
  • Each proposal of the embodiments described above may be used in a receiving method different from the CDRX function.
  • each proposal of the embodiments described above may be used even when a base station intermittently receives a signal transmitted from a terminal.
  • each proposal of the embodiments described above may also be used when a signal transmitted from one terminal is intermittently received by the other terminal.
  • active may be replaced with valid, enabled, activated, etc.
  • inactive may be replaced with disabled, invalidated, sleep, etc.
  • “Signal” may be read as information, control information, notification, etc.
  • Base station 100 and terminal 200 may have a function to implement the embodiments described above. However, base station 100 and terminal 200 may each have only some of the functions in the embodiment.
  • FIG. 17 is a block diagram illustrating an example of the configuration of base station 100 according to an embodiment of the present disclosure.
  • the base station includes, for example, a transmitter 101, a receiver 102, and a controller 103.
  • Base station 100 communicates with terminal 200 (see FIG. 18) wirelessly.
  • terminal 200 see FIG. 18
  • the transmitting section 101 and the receiving section 102 may be collectively referred to as a communication section.
  • the transmitter 101 transmits the DL signal to the terminal 200.
  • the transmitter 101 transmits a DL signal under the control of the controller 103.
  • the DL signal may include information indicating scheduling regarding signal transmission by the terminal 200 (eg, UL grant), upper layer control information, and the like.
  • the transmitter 101 transmits various control signals (RRC layer control signals, etc.), reference signals, data signals, etc. to the terminal 200 as DL signals.
  • the transmitter 101 transmits, for example, the various signals, channels, setting information, control information, etc. described in the above embodiments to the terminal 200 as DL signals.
  • the transmitter 101 transmits information regarding adaptation generated by the controller 103 to the terminal 200. Further, the transmitter 101 transmits a data signal (for example, an XR traffic signal) generated by the controller 103 to the terminal 200.
  • a data signal for example, an XR traffic signal
  • the receiving unit 102 receives the UL signal transmitted from the terminal 200.
  • the receiving unit 102 receives a UL signal under the control of the control unit 103.
  • the receiving unit 102 receives a signal including terminal capability information (for example, UE capability) of the terminal 200, various control signals, reference signals, data signals, etc. from the terminal 200 as a UL signal.
  • terminal capability information for example, UE capability
  • the control unit 103 controls the overall (communication) operation of the base station 100, including the transmission processing in the transmission unit 101 and the reception processing in the reception unit 102.
  • control unit 103 acquires information such as data and control information from an upper layer and outputs it to the transmission unit 101. Further, the control unit 103 outputs the data, control information, etc. received from the reception unit 102 to the upper layer.
  • control unit 103 determines the resources and/or UL used for transmitting/receiving DL signals based on the signals (for example, data and control information, etc.) received from the terminal 200 and/or the data and control information acquired from the upper layer. Allocates resources used for signal transmission and reception. Information regarding the allocated resources may be included in the control information transmitted to the terminal 200.
  • the control unit 103 executes operations other than the transmission and reception described in the above embodiments (note that the operations may be executed by the transmission unit 101 and/or the reception unit 102).
  • control unit 103 determines whether or not adaptation can be applied, and if applicable, the on-period during which adaptation is applied. Control unit 103 generates information regarding adaptation to be transmitted to terminal 200 based on the determination result. Further, for example, the control unit 103 determines an element to be adapted (for example, a parameter to be adjusted (at least one of the start position, end position, and length of the on period)), and adjusts the determined parameter. Determine the amount. The control unit 103 may generate information including the determined content as control information.
  • an element to be adapted for example, a parameter to be adjusted (at least one of the start position, end position, and length of the on period)
  • FIG. 18 is a block diagram illustrating an example of the configuration of terminal 200 according to an embodiment of the present disclosure.
  • Terminal 200 includes, for example, a receiving section 201, a transmitting section 202, and a control section 203.
  • Terminal 200 communicates with base station 100 (see FIG. 17) wirelessly, for example.
  • base station 100 see FIG. 17
  • the receiving section 201 and the transmitting section 202 may be collectively referred to as a communication section.
  • the receiving unit 201 receives the DL signal transmitted from the base station 100.
  • the receiving unit 201 receives a DL signal under the control of the control unit 203.
  • the receiving unit 201 receives various control signals, reference signals, data signals, etc. from the base station 100 as DL signals.
  • the receiving unit 201 receives, for example, the various signals, channels, setting information, control information, etc. described in the above embodiments from the base station 100 as DL signals.
  • the receiving unit 201 receives a signal from the base station 100 during the on period.
  • the received signal may include information regarding adaptation.
  • the received signals may include XR traffic signals.
  • the transmitter 202 transmits the UL signal to the base station 100.
  • the transmitter 202 transmits a UL signal under the control of the controller 203.
  • the transmitter 202 transmits a signal including information regarding the processing capacity of the terminal 200, various control signals, reference signals, data signals, etc. to the base station 100 as a UL signal.
  • the control unit 203 controls the overall (communication) operation of the terminal 200, including reception processing in the reception unit 201 and transmission processing in the transmission unit 202.
  • control unit 203 acquires information such as data and control information from an upper layer and outputs it to the transmission unit 202. Further, the control unit 203 outputs, for example, data and control information received from the reception unit 201 to an upper layer.
  • control unit 203 applies adaptation during the on period based on received information regarding adaptation and/or predefined information.
  • the on period during which adaptation is applied may be determined based on received information regarding adaptation, or may be determined based on predefined conditions.
  • control unit 103 may also control elements to be adapted (for example, parameters to be adjusted (start position, end position, and length of the on period) based on predefined conditions and/or received information. determining an amount by which the determined parameter is adjusted; The control unit 103 applies adaptation based on the determined content.
  • the control unit 203 executes operations other than the transmission and reception described in the above embodiments (note that the operations may be executed by the reception unit 201 and/or the transmission unit 202).
  • each functional block may be realized using one physically or logically coupled device, or may be realized using two or more physically or logically separated devices directly or indirectly (e.g. , wired, wireless, etc.) and may be realized using a plurality of these devices.
  • the functional block may be realized by combining software with the one device or the plurality of devices.
  • Functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, exploration, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, consideration, These include, but are not limited to, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assigning. I can't.
  • a functional block (configuration unit) that performs transmission is called a transmitting unit or a transmitter. In either case, as described above, the implementation method is not particularly limited.
  • a base station, a user terminal, etc. in an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure.
  • FIG. 19 is a diagram illustrating an example of the hardware configuration of base station 100 and terminal 200 according to an embodiment of the present disclosure.
  • the base station 100 and terminal 200 described above may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like.
  • the word “apparatus” can be read as a circuit, a device, a unit, etc.
  • the hardware configurations of the base station 100 and the terminal 200 may be configured to include one or more of each device shown in the figure, or may be configured not to include some of the devices.
  • Each function in the base station 100 and the terminal 200 is performed by loading predetermined software (programs) onto hardware such as the processor 1001 and memory 1002, so that the processor 1001 performs calculations and controls communication by the communication device 1004. This is realized by controlling at least one of data reading and writing in the memory 1002 and the storage 1003.
  • the processor 1001 for example, operates an operating system to control the entire computer.
  • the processor 1001 may be configured by a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, registers, and the like.
  • CPU central processing unit
  • control units 103, 203, etc. may be realized by the processor 1001.
  • the processor 1001 reads programs (program codes), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 to the memory 1002, and executes various processes in accordance with these.
  • programs program codes
  • the control unit 103 of the base station 100, the control unit 203 of the terminal 200, etc. may be realized by a control program stored in the memory 1002 and operated in the processor 1001, and other functional blocks may also be realized in the same way. Good too.
  • Processor 1001 may be implemented by one or more chips. Note that the program may be transmitted from a network via a telecommunications line.
  • the memory 1002 is a computer-readable recording medium, and includes at least one of ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), etc. may be done.
  • Memory 1002 may be called a register, cache, main memory, or the like.
  • the memory 1002 can store executable programs (program codes), software modules, and the like to implement a wireless communication method according to an embodiment of the present disclosure.
  • the storage 1003 is a computer-readable recording medium, such as an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (such as a compact disk, a digital versatile disk, or a Blu-ray disk). (registered trademark disk), smart card, flash memory (eg, card, stick, key drive), floppy disk, magnetic strip, etc.
  • Storage 1003 may also be called an auxiliary storage device.
  • the storage medium mentioned above may be, for example, a database including at least one of memory 1002 and storage 1003, a server, or other suitable medium.
  • 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 a network device, network controller, network card, communication module, etc., for example.
  • the communication device 1004 includes, for example, a high frequency switch, a duplexer, a filter, a frequency synthesizer, etc. in order to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). It may be composed of.
  • FDD frequency division duplex
  • TDD time division duplex
  • the communication device 1004 may have a transmitter and a receiver that are physically or logically separated.
  • the input device 1005 is an input device (eg, keyboard, mouse, microphone, switch, button, sensor, etc.) that accepts input from the outside.
  • the output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that performs output to the outside. Note that 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 memory 1002 is connected by a bus 1007 for communicating information.
  • the bus 1007 may be configured using a single bus, or may be configured using different buses for each device.
  • the base station 100 and the terminal 200 also include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), and a field programmable gate array (FPGA).
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • PLD programmable logic device
  • FPGA field programmable gate array
  • a part or all of each functional block may be realized by the hardware.
  • processor 1001 may be implemented using at least one of these hardwares.
  • the receiving unit receives information regarding period adjustment having an active period in which a signal is received and a sleep period in which the signal is not received; and a control unit that controls reception of the signal during the adjusted active period.
  • the receiving unit receives, in a first active period, the information regarding adjustment of a cycle including a second active period that is subsequent to the first active period.
  • the receiving unit receives, during the sleep period, the information included in downlink control information that can be received during the sleep period.
  • control unit adjusts the third active period after a specific time has elapsed after receiving the information.
  • control unit adjusts the plurality of active periods.
  • a control unit that generates information regarding periodic adjustment having an active period in which a terminal receives a signal and a sleep period in which the terminal does not receive the signal; and a control unit that transmits the information.
  • a base station is provided that includes a transmitter.
  • control unit adjusts the active period in a cycle having an active period in which a signal is received and a sleep period in which the signal is not received;
  • a terminal is provided that includes a receiving section that receives a signal.
  • control unit shifts a first active period of the plurality of periodically provided active periods in the time direction.
  • control unit adjusts the time position of the second active period following the first active period to the same time position as when the first active period is not adjusted.
  • control unit adjusts the time interval of the sleep period following the first active period to the same time interval as when no adjustment is made.
  • control unit changes the length of a first active period among the plurality of periodically provided active periods and/or a first sleep period following the first active period.
  • a signal is generated that is received in the active period after a period is adjusted having an active period in which the terminal receives a signal and a sleep period in which the terminal does not receive the signal.
  • a base station is provided that includes a control unit that transmits the signal, and a transmitter that transmits the signal.
  • the operations of a plurality of functional sections may be physically performed by one component, or the operations of one functional section may be physically performed by a plurality of components.
  • the order of processing may be changed as long as there is no contradiction.
  • the base station 100 and the terminal 200 have been described using functional block diagrams for convenience of processing description, such devices may be implemented in hardware, software, or a combination thereof.
  • Software operated by a processor included in base station 100 according to an embodiment of the present disclosure and software operated by a processor included in terminal 200 according to an embodiment of this disclosure are respectively random access memory (RAM), flash memory, and read-only memory. (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server, or any other suitable storage medium.
  • the notification of information may include physical layer signaling (e.g., DCI (Downlink Control Information), UCI (Uplink Control Information)), upper layer signaling (e.g., RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, It may be implemented using broadcast information (MIB (Master Information Block), SIB (System Information Block))), other signals, or a combination thereof.
  • RRC signaling may be called an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like.
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution-Advanced
  • SUPER 3G IMT-Advanced
  • 4G fourth generation mobile communication system
  • 5G 5th generation mobile communication system
  • the present invention may be applied to at least one of the next generation systems. Furthermore, a combination of a plurality of systems may be applied (for example, a combination of at least one of LTE and LTE-A and 5G).
  • ⁇ Base station operation> The specific operations performed by the base station in this disclosure may be performed by its upper node in some cases.
  • various operations performed for communication with a terminal are performed by the base station and other network nodes other than the base station (e.g., MME or It is clear that this could be done by at least one of the following: (conceivable, but not limited to) S-GW, etc.).
  • MME Mobility Management Entity
  • S-GW Serving Mobility Management Entity
  • ⁇ Input/output direction> Information etc. can be output from an upper layer (or lower layer) to a lower layer (or upper layer). It may be input/output via multiple network nodes.
  • the input/output information may be stored in a specific location (eg, memory) or may be managed using a management table. Information etc. to be input/output may be overwritten, updated, or additionally written. The output information etc. may be deleted. The input information etc. may be transmitted to other devices.
  • Judgment may be made using a value expressed by 1 bit (0 or 1), a truth value (Boolean: true or false), or a comparison of numerical values (for example, a predetermined value). (comparison with a value).
  • Software includes instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, whether referred to as software, firmware, middleware, microcode, hardware description language, or by any other name. , should be broadly construed to mean an application, software application, software package, routine, subroutine, object, executable, thread of execution, procedure, function, etc.
  • software, instructions, information, etc. may be sent and received via a transmission medium.
  • a transmission medium For example, if the software uses wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and/or wireless technology (infrared, microwave, etc.) to create a website, When transmitted from a server or other remote source, these wired and/or wireless technologies are included within the definition of transmission medium.
  • wired technology coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.
  • wireless technology infrared, microwave, etc.
  • the information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies.
  • data, instructions, commands, information, signals, bits, symbols, chips, etc. which may be referred to throughout the above description, may refer to voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may also be represented by a combination of
  • At least one of the channel and the symbol may be a signal.
  • the signal may be a message.
  • a component carrier may be called a carrier frequency, a cell, a frequency carrier, or the like.
  • the information, parameters, etc. described in this disclosure may be expressed using absolute values, relative values from a predetermined value, or using other corresponding information. may be expressed.
  • radio resources may be indicated by an index.
  • Base Station In this disclosure, "Base Station (BS),""wireless base station,””fixedstation,” "NodeB,””eNodeB(eNB),”"gNodeB(gNB),”""""accesspoint”,”transmissionpoint”,”receptionpoint”,”transmission/receptionpoint”,”cell”,”sector”,”cellgroup”,”
  • carrier “component carrier”, etc. may be used interchangeably.
  • a base station is sometimes referred to by terms such as macrocell, small cell, femtocell, and picocell.
  • a base station can accommodate one or more (eg, three) cells. If a base station accommodates multiple cells, the overall coverage area of the base station can be partitioned into multiple smaller areas, and each smaller area is divided into multiple subsystems (e.g., small indoor base stations (RRHs)). Communication services may also be provided by a remote radio head).
  • RRHs small indoor base stations
  • Communication services may also be provided by a remote radio head).
  • the term "cell” or “sector” refers to a portion or the entire coverage area of a base station and/or base station subsystem that provides communication services in this coverage. refers to
  • the base station transmitting information to the terminal may be read as the base station instructing the terminal to control/operate based on the information.
  • MS Mobile Station
  • UE User Equipment
  • a mobile station is defined by a person skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless It may also be referred to as a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.
  • At least one of a base station and a mobile station may be called a transmitting device, a receiving device, a communication device, or the like.
  • the base station and the mobile station may be a device mounted on a mobile body, the mobile body itself, or the like.
  • the moving body refers to a movable object, and the moving speed is arbitrary. Naturally, this also includes cases where the moving object is stopped. Examples of such moving objects include vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, carts, rickshaws, and ships and other watercraft.
  • the mobile object may be a mobile object that autonomously travels based on a travel command. It may be a vehicle (e.g. car, airplane, etc.), an unmanned moving object (e.g. drone, self-driving car, etc.), or a robot (manned or unmanned). good.
  • the base station and the mobile station includes devices that do not necessarily move during communication operations.
  • 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 replaced by a user terminal.
  • communication between a base station and a user terminal is replaced with communication between multiple user terminals (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.
  • the terminal 200 may have the functions that the base station 100 described above has.
  • words such as "up” and “down” may be replaced with words corresponding to inter-terminal communication (for example, "side”).
  • uplink channels, downlink channels, etc. may be replaced with side channels.
  • the user terminal in the present disclosure may be replaced with a base station.
  • the base station 100 may have the functions that the terminal 200 described above has.
  • FIG. 20 shows an example of the configuration of the vehicle 2001.
  • a vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, a front wheel 2007, a rear wheel 2008, an axle 2009, an electronic control unit 2010, and various sensors 2021 to 2029. , an information service section 2012 and a communication module 2013.
  • Each aspect/embodiment described in this disclosure may be applied to a communication device mounted on vehicle 2001, for example, may be applied to communication module 2013.
  • the drive unit 2002 is composed of, for example, an engine, a motor, or a hybrid of an engine and a motor.
  • the steering unit 2003 includes at least a steering wheel (also referred to as a steering wheel), and is configured to steer at least one of the front wheels and the rear wheels based on the operation of the steering wheel operated by the user.
  • the electronic control unit 2010 is composed of a microprocessor 2031, a memory (ROM, RAM) 2032, and a communication port (IO port) 2033. Signals from various sensors 2021 to 2029 provided in the vehicle 2001 are input to the electronic control unit 2010.
  • the electronic control unit 2010 may also be called an ECU (Electronic Control Unit).
  • Signals from various sensors 2021 to 2029 include a current signal from a current sensor 2021 that senses the motor current, a front wheel and rear wheel rotation speed signal obtained by a rotation speed sensor 2022, and a front wheel rotation speed signal obtained by an air pressure sensor 2023. and rear wheel air pressure signals, vehicle speed signals acquired by vehicle speed sensor 2024, acceleration signals acquired by acceleration sensor 2025, accelerator pedal depression amount signals acquired by accelerator pedal sensor 2029, and brake pedal sensor 2026. These include a brake pedal depression amount signal, a shift lever operation signal acquired by the shift lever sensor 2027, a detection signal for detecting obstacles, vehicles, pedestrians, etc. acquired by the object detection sensor 2028, and the like.
  • the information service department 2012 controls various devices such as car navigation systems, audio systems, speakers, televisions, and radios that provide (output) various information such as driving information, traffic information, and entertainment information, and these devices. It is composed of one or more ECUs.
  • the information service unit 2012 provides various multimedia information and multimedia services to the occupants of the vehicle 2001 using information acquired from an external device via the communication module 2013 and the like.
  • the information service department 2012 may include an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, etc.) that accepts input from the outside, and an output device that performs output to the outside (for example, display, speaker, LED lamp, touch panel, etc.).
  • an input device for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, etc.
  • an output device that performs output to the outside (for example, display, speaker, LED lamp, touch panel, etc.).
  • the driving support system unit 2030 includes a millimeter wave radar, LiDAR (Light Detection and Ranging), a camera, a positioning locator (for example, GNSS, etc.), map information (for example, a high-definition (HD) map, an autonomous vehicle (AV) map, etc.) ), gyro systems (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence) chips, and AI processors that prevent accidents and reduce the driver's driving burden.
  • the system is comprised of various devices that provide functions for the purpose and one or more ECUs that control these devices. Further, the driving support system unit 2030 transmits and receives various information via the communication module 2013, and realizes a driving support function or an automatic driving function.
  • Communication module 2013 can communicate with microprocessor 2031 and components of vehicle 2001 via a communication port.
  • the communication module 2013 communicates with the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axle 2009, electronic Data is transmitted and received between the microprocessor 2031, memory (ROM, RAM) 2032, and sensors 2021 to 2029 in the control unit 2010.
  • the communication module 2013 is a communication device that can be controlled by the microprocessor 2031 of the electronic control unit 2010 and can communicate with external devices. For example, various information is transmitted and received with an external device via wireless communication.
  • the communication module 2013 may be located either inside or outside the electronic control unit 2010.
  • the external device may be, for example, a base station, a mobile station, or the like.
  • the communication module 2013 receives signals from the various sensors 2021 to 2029 described above that are input to the electronic control unit 2010, information obtained based on the signals, and input from the outside (user) obtained via the information service unit 2012. At least one of the information based on the information may be transmitted to an external device via wireless communication.
  • the electronic control unit 2010, various sensors 2021 to 2029, information service unit 2012, etc. may be called an input unit that receives input.
  • the PUSCH transmitted by the communication module 2013 may include information based on the above input.
  • the communication module 2013 receives various information (traffic information, signal information, inter-vehicle information, etc.) transmitted from an external device, and displays it on the information service section 2012 provided in the vehicle 2001.
  • the information service unit 2012 is an output unit that outputs information (for example, outputs information to devices such as a display and a speaker based on the PDSCH (or data/information decoded from the PDSCH) received by the communication module 2013). may be called.
  • Communication module 2013 also stores various information received from external devices into memory 2032 that can be used by microprocessor 2031 . Based on the information stored in the memory 2032, the microprocessor 2031 controls the drive section 2002, steering section 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheel 2007, rear wheel 2008, and axle 2009 provided in the vehicle 2001. , sensors 2021 to 2029, etc. may be controlled.
  • determining may encompass a wide variety of operations.
  • “Judgment” and “decision” include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, search, and inquiry. (e.g., searching in a table, database, or other data structure), and regarding an ascertaining as a “judgment” or “decision.”
  • judgment and “decision” refer to receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, and access.
  • (accessing) may include considering something as a “judgment” or “decision.”
  • judgment and “decision” refer to resolving, selecting, choosing, establishing, comparing, etc. as “judgment” and “decision”. may be included.
  • judgment and “decision” may include regarding some action as having been “judged” or “determined.”
  • judgment (decision) may be read as "assuming", “expecting", “considering”, etc.
  • connection means any connection or coupling, direct or indirect, between two or more elements and each other. It may include the presence of one or more intermediate elements between two elements that are “connected” or “coupled.”
  • the bonds or connections between elements may be physical, logical, or a combination thereof. For example, "connection” may be replaced with "access.”
  • two elements may include one or more electrical wires, cables, and/or printed electrical connections, as well as in the radio frequency domain, as some non-limiting and non-inclusive examples. , electromagnetic energy having wavelengths in the microwave and optical (both visible and non-visible) ranges.
  • the reference signal can also be abbreviated as RS (Reference Signal), and may also be called a pilot depending on the applied standard.
  • any reference to elements using the designations "first,””second,” etc. does not generally limit the amount or order of those elements. These designations may be used in this disclosure as a convenient way to distinguish between two or more elements. Thus, reference to a first and second element does not imply that only two elements may be employed or that the first element must precede the second element in any way.
  • a radio frame may be composed of one or more frames in the time domain. Each frame or frames in the time domain may be called a subframe. A subframe may also be composed of one or more slots in the time domain. A subframe may have a fixed time length (eg, 1 ms) that does not depend on numerology.
  • the numerology may be a communication parameter applied to the transmission and/or reception of a certain signal or channel. Numerology includes, for example, subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame configuration, transmission and reception. It may also indicate at least one of a specific filtering process performed by the device in the frequency domain, a specific windowing process performed by the transceiver in the time domain, etc.
  • SCS subcarrier spacing
  • TTI transmission time interval
  • the numerology may also indicate at least one of a specific filtering process performed by the device in the frequency domain, a specific windowing process performed by the transceiver in the time domain, etc.
  • a slot may be composed of one or more symbols (OFDM (Orthogonal Frequency Division Multiplexing) symbols, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbols, etc.) in the time domain.
  • a slot may be a unit of time based on numerology.
  • a slot may include multiple mini-slots. Each minislot may be made up of one or more symbols in the time domain. Furthermore, a mini-slot may also be called a sub-slot. A minislot may be made up of fewer symbols than a slot.
  • PDSCH (or PUSCH) transmitted in time units larger than minislots may be referred to as PDSCH (or PUSCH) mapping type A.
  • PDSCH (or PUSCH) transmitted using minislots may be referred to as PDSCH (or PUSCH) mapping type B.
  • Radio frames, subframes, slots, minislots, and symbols all represent time units when transmitting signals. Other names may be used for the radio frame, subframe, slot, minislot, and symbol.
  • one subframe may be called a Transmission Time Interval (TTI)
  • TTI Transmission Time Interval
  • multiple consecutive subframes may be called a TTI
  • one slot or minislot may be called a TTI. It's okay.
  • at least one of the subframe and TTI may be a subframe (1ms) in existing LTE, a period shorter than 1ms (for example, 1-13 symbols), or a period longer than 1ms. It may be.
  • the unit representing the TTI may be called a slot, minislot, etc. instead of a subframe.
  • TTI refers to, for example, the minimum time unit for scheduling in wireless communication.
  • a base station performs scheduling to allocate radio resources (frequency bandwidth, transmission power, etc. that can be used by each user terminal) to each user terminal on a TTI basis.
  • radio resources frequency bandwidth, transmission power, etc. that can be used by each user terminal
  • the TTI may be a transmission time unit of a channel-coded data packet (transport block), a code block, a codeword, etc., or may be a processing unit of scheduling, link adaptation, etc. Note that when a TTI is given, the time interval (for example, the number of symbols) to which transport blocks, code blocks, code words, etc. are actually mapped may be shorter than the TTI.
  • one slot or one minislot is called a TTI
  • one or more TTIs may be the minimum time unit for scheduling.
  • the number of slots (minislot number) that constitutes the minimum time unit of the scheduling may be controlled.
  • a TTI having a time length of 1 ms may be called a normal TTI (TTI in LTE Rel. 8-12), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, etc.
  • TTI shorter than a normal TTI may be referred to as a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.
  • long TTI for example, normal TTI, subframe, etc.
  • short TTI for example, short TTI, etc. It may also be read as a TTI having the above TTI length.
  • a resource block is a resource allocation unit in the time domain and frequency domain, and may include one or more continuous subcarriers in the frequency domain.
  • the number of subcarriers included in an RB may be the same regardless of the numerology, and may be 12, for example.
  • the number of subcarriers included in an RB may be determined based on numerology.
  • the time domain of an RB may include one or more symbols, and may be one slot, one minislot, one subframe, or one TTI in length.
  • One TTI, one subframe, etc. may each be composed of one or more resource blocks.
  • one or more RBs are defined as physical resource blocks (PRBs), sub-carrier groups (SCGs), resource element groups (REGs), PRB pairs, RB pairs, etc. May be called.
  • PRBs physical resource blocks
  • SCGs sub-carrier groups
  • REGs resource element groups
  • PRB pairs RB pairs, etc. May be called.
  • a resource block may be configured by one or more resource elements (REs).
  • REs resource elements
  • 1 RE may be a radio resource region of 1 subcarrier and 1 symbol.
  • Bandwidth Part (also referred to as partial bandwidth) refers to a subset of consecutive common resource blocks (RBs) for a certain numerology in a certain carrier. good.
  • the common RB may be specified by an RB index based on a common reference point of the carrier.
  • PRBs may be defined in a BWP and numbered within that BWP.
  • the BWP may include a UL BWP (UL BWP) and a DL BWP (DL BWP).
  • UL BWP UL BWP
  • DL BWP DL BWP
  • One or more BWPs may be configured within one carrier for a UE.
  • At least one of the configured BWPs may be active and the UE may not expect to transmit or receive a given signal/channel outside of the active BWP.
  • “cell”, “carrier”, etc. in the present disclosure may be replaced with "BWP”.
  • radio frames, subframes, slots, minislots, symbols, etc. described above are merely examples.
  • the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of symbols included in an RB The number of subcarriers, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, and other configurations can be changed in various ways.
  • Maximum transmit power as described in this disclosure may mean the maximum value of transmit power, the nominal maximum transmit power (the nominal UE maximum transmit power), or the rated maximum transmit power ( It may also mean the rated UE maximum transmit power.
  • the present disclosure is useful for wireless communication systems.
  • Wireless communication system 20 NG-RAN 100 base station (gNB) 200 Terminal (UE) 101,202 Transmitting unit 102,201 Receiving unit 103,203 Control unit 1001 Processor 1002 Memory 1003 Storage 1004 Communication device 1005 Input device 1006 Output device 1007 Bus

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

Ce terminal est équipé d'une unité de commande pour ajuster la période active dans un cycle qui a une période active pendant laquelle un signal est reçu et une période de veille pendant laquelle un signal n'est pas reçu, et une unité de réception pour recevoir le signal pendant la période active ajustée.
PCT/JP2022/018990 2022-04-26 2022-04-26 Terminal et station de base WO2023209831A1 (fr)

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Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
VIVO: "Challenges and potential enhancements for XR", 3GPP TSG RAN WG1#106-E R1-2106632, 7 August 2021 (2021-08-07), XP052037938 *
VIVO: "Enhanced support for XR services in Rel-18", 3GPP TSG RAN REL-18 WORKSHOP, RWS-210164, 7 June 2021 (2021-06-07), XP052025723 *
ZTE, SANECHIPS: "Further Discussion on Capacity and Power Working Areas for XR", 3GPP TSG RAN WG1#105-E R1-2105606, 12 May 2021 (2021-05-12), XP052011563 *

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