Terminal

Abstract

This terminal is equipped with a control unit for adjusting the active period in a cycle which has an active period during which a signal is received and a sleep period during which a signal is not received, and a receiving unit for receiving the signal during the adjusted active period.

Description

[Technical Field]

[0001] This disclosure is At the end Regarding. [Background technology]

[0002] The 3rd Generation Partnership Project (3GPP) has developed specifications for the 5th generation mobile communication system (5G, also known as New Radio (NR) or Next Generation (NG)), and is also developing specifications for the next generation, known as Beyond 5G, 5G Evolution, or 6G.

[0003] For 5G, technologies that satisfy the requirements such as a large-capacity system, high-speed data transmission speed, low latency, simultaneous connection of a large number of terminals, low cost, and low power consumption are being considered (for example, Non-Patent Document 1).

[0004] Regarding power saving, 3GPP has introduced an intermittent reception method that allows terminals to receive signals with low power consumption. Note that power may be interpreted as energy, and power saving may be interpreted as power reduction, etc. [Prior art documents] [Non-patent literature]

[0005] [Non-Patent Document 1] 3GPP TS 38.300 V17.0.0 (2022-03) [Non-patent document 2] “New SI: Study on network energy savings for NR”, RP-213554, 3GPP TSG RAN Meeting #94e, 3GPP, December 2021 Summary of the Invention

[0006] In the intermittent reception method, there is room for further study on how to properly receive signals.

[0007] One aspect of the present disclosure provides a terminal and a base station that can properly receive signals in an intermittent reception method.

[0008] A terminal according to one aspect of the present disclosure includes a control unit that adjusts an active period during which a signal is received and a sleep period during which the signal is not received, and a receiving unit that receives the signal during the adjusted active period.

[0009] A base station according to one aspect of the present disclosure includes a control unit that generates a signal to be received in an active period after a cycle having an active period in which a terminal receives a signal and a sleep period in which the terminal does not receive the signal has been adjusted, and a transmission unit that transmits the signal. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a diagram illustrating an example of a wireless communication system according to an embodiment of the present disclosure. [Figure 2] FIG. 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. [Figure 3] 1A to 1C are diagrams illustrating exemplary configurations of radio frames, subframes, and slots used in a radio communication system according to an embodiment of the present disclosure. [Figure 4] FIG. 1 is a diagram illustrating CDRX in 3GPP Release 15. [Figure 5] FIG. 1 is a diagram illustrating WUS in Release 16 of 3GPP. [Figure 6] A diagram showing an example of the relationship between the reception period of the CDRX function and the arrival timing of XR traffic. [Figure 7] FIG. 10 is a diagram illustrating a first example of a notification method. [Figure 8]FIG. 10 is a diagram illustrating a second example of a notification method. [Figure 9] FIG. 10 is a diagram illustrating a third example of a notification method. [Figure 10] FIG. 10 is a diagram illustrating a fourth example of a notification method. [Figure 11] FIG. 10 is a diagram illustrating a fifth example of a notification method. [Figure 12] FIG. 10 is a diagram illustrating a first example of application of adaptation. [Figure 13] FIG. 10 is a diagram illustrating a second example of application of adaptation. [Figure 14] FIG. 10 is a diagram illustrating a third example of application of adaptation. [Figure 15] FIG. 10 is a diagram illustrating a fourth example of application of adaptation. [Figure 16] FIG. 10 is a diagram showing a fifth example of application of adaptation. [Figure 17] FIG. 2 is a block diagram illustrating an example of a configuration of a base station according to an embodiment of the present disclosure. [Figure 18] FIG. 2 is a block diagram illustrating an example of a configuration of a terminal according to an embodiment of the present disclosure. [Figure 19] FIG. 2 is a diagram illustrating an example of a hardware configuration of a base station and a terminal according to an embodiment of the present disclosure. [Figure 20] 1 is a diagram illustrating an example of a configuration of a vehicle according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, an embodiment according to one aspect of the present disclosure will be described with reference to the drawings.

[0012] (Embodiment) <Wireless communication system> 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 conforming to 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).

[0013] The wireless communication system 10 may be a wireless communication system conforming to a system called Beyond 5G, 5G Evolution, or 6G.

[0014] 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). When it is not necessary to distinguish between the gNB 100A, the gNB 100B, etc., they are collectively referred to as gNBs or base stations 100. Furthermore, the number of gNBs and UEs is not limited to the example shown in FIG. 1.

[0015] 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). Note that the NG-RAN 20 and 5GC may simply be referred to as a "network." In the following description, the term "gNB" may be replaced with the term "network (NW)."

[0016] As an example, the gNB100A and the gNB100B are base stations conforming to 5G, and perform 5G wireless communication with the UE 200. The gNB100A, the gNB100B, and the UE 200 may support MIMO (Multiple-Input Multiple-Output), which generates a more directional beam BM by controlling radio signals transmitted from multiple antenna elements, carrier aggregation (CA), which uses a bundle of multiple component carriers (CC), and dual connectivity (DC), which performs communication between the UE and each of two NG-RAN nodes.

[0017] Furthermore, the wireless communication system 10 may support multiple frequency ranges (FR). Fig. 2 is a diagram showing an example of FRs 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~52.6GHz

[0018] FR1 may use a sub-carrier spacing (SCS) of 15 kHz, 30 kHz, or 60 kHz, and a bandwidth (BW) of 5 to 100 MHz. FR2 is a higher frequency than FR1, and may use an SCS of 60 kHz or 120 kHz (including 240 kHz), and a bandwidth (BW) of 50 to 400 MHz.

[0019] Note that the SCS may be interpreted as a numerology, which is defined in 3GPP TS 38.300 and corresponds to one subcarrier spacing in the frequency domain.

[0020] Furthermore, the wireless communication system 10 may support a frequency band higher than the FR2 frequency band. Specifically, the wireless communication system 10 may support a frequency band exceeding 52.6 GHz up to 114.25 GHz. For convenience, such a high frequency band may be referred to as "FR2x." When using a 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) with a larger SCS may be applied.

[0021] Fig. 3 is a diagram showing an example of the configuration of a radio frame (system frame), subframe, and slot used in the radio communication system 10. As shown in Fig. 3, one slot is made up 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 interval (frequency) shown in Fig. 3. For example, 480 kHz, 960 kHz, etc. may be used as the SCS.

[0022] Furthermore, the number of symbols constituting one slot does not necessarily have to be 14 (for example, it may be 28 or 56 symbols, etc.) Furthermore, the number of slots per subframe may differ depending on the SCS.

[0023] The time direction (t) shown in Fig. 3 may be called a time domain, a symbol period, a symbol time, etc. The frequency direction may be called a frequency domain, a resource block, a subcarrier, a bandwidth part (BWP), etc.

[0024] The gNB100 transmits control information, setting information, etc. to the UE200 as a downlink (DL) signal to achieve power saving of the gNB100.

[0025] Furthermore, for example, gNB100 receives control information for achieving power saving of gNB100, data signals, information regarding the processing capabilities of UE200 (terminal capabilities (information); for example, UE capability), etc. from UE200 as uplink (UL) signals.

[0026] Channels used for transmitting DL signals include, for example, data channels and control channels. For example, the data channel may include a physical downlink shared channel (PDSCH), and the control channel may include a physical downlink control channel (PDCCH). For example, the gNB 100 transmits control information to the UE 200 using the PDCCH, and transmits DL data signals using the PDSCH. Note that the PDSCH is an example of a downlink shared channel, and the PDCCH is an example of a downlink control channel. Note that the PDCCH may be interpreted as downlink control information (DCI), control information, etc. transmitted in the PDCCH.

[0027] The reference signal included in the DL signal may include, for example, at least one of a DMRS (Demodulation Reference Signal), a PTRS (Phase Tracking Reference Signal), a CSI-RS (Channel State Information - Reference Signal), an SRS (Sounding Reference Signal), and a PRS (Positioning Reference Signal) for positioning information. For example, reference signals such as the DMRS and PTRS are used to demodulate DL data signals and are transmitted using the PDSCH.

[0028] The UE 200 is a communication device equipped with a wireless communication function, such as a smartphone, a mobile phone, a tablet, a wearable device, or an M2M (Machine-to-Machine) communication module.

[0029] The UE 200 receives control signals or data signals from the gNB 100 via DL and transmits control signals or data signals to the gNB 100 via UL, thereby utilizing various communication services provided by the wireless communication system 10. The UE 200 also receives various reference signals transmitted from the gNB 100 and measures the propagation path quality based on the reception results of the reference signals.

[0030] For example, UE200 receives control information, setting information, etc. from gNB100 as a DL signal to achieve power saving of gNB100.

[0031] Also, for example, UE200 transmits control information, data signals, terminal capability information of UE200, etc. to gNB100 as UL signals to achieve power saving of gNB100.

[0032] Channels used for transmitting UL signals include, for example, data channels and control channels. For example, the data channel may include a Physical Uplink Shared Channel (PUSCH), and the control channel may include a Physical Uplink Control Channel (PUCCH). For example, the UE 200 transmits control information using the PUCCH and transmits UL data signals using the PUSCH. Note that the PUSCH is an example of an uplink shared channel, and the PUCCH is an example of an uplink control channel. The shared channel may also be called a data channel. Note that the PUSCH or the PUCCH may be interpreted as uplink control information (UCI), control information, etc. transmitted in the PUSCH or the PUCCH.

[0033] 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. For example, the reference signal such as DMRS or PTRS is used to demodulate the UL data signal and is transmitted using the PUSCH.

[0034] <Device power saving> Next, as an example of achieving power saving in a terminal, discontinuous reception (DRX) and connected mode DRX (CDRX) in a conventional terminal will be described.

[0035] 4 is a diagram illustrating CDRX in 3GPP Release 15. In CDRX operation in 3GPP Release 15, a terminal is active during a DRX on-duration in a DRX cycle and monitors the PDCCH during the DRX on-duration.

[0036] 5 is a diagram illustrating WUS in 3GPP Release 16. In 3GPP Release 16, PDCCH-based WUS can instruct one or more terminals whether or not the terminals should monitor the PDCCH in the next DRX-on period.

[0037] DCI format 2_6, in which the CRC (Cyclic Redundancy Check) is scrambled by the PS-RNTI (Power Saving - Radio Network Temporary Identifier), is used as the PDCCH-based WUS and is also called DCP (DCI with CRC scrambled by PS-RNTI).

[0038] 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 terminal is not transmitting or receiving data), the terminal can skip monitoring during the DRX on period and immediately transition to sleep mode.

[0039] Furthermore, a default terminal operation may be set in case the PDCCH-based WUS is not detected due to, for example, a detection error.

[0040] DCI format 2_6 includes a 1-bit wake-up indication (information) indicating "active" or "inactive." Note that active may be interpreted as enabled, enabled, or woken up, and inactive may be interpreted as disabled, disabled, or sleep.

[0041] Conventionally, power saving of terminals has been attempted in this way, for example.

[0042] <Current status of discussions on power saving> Next, we will explain the status of power saving discussions in 3GPP Release 18. Release 18 is considering enhancements to device power consumption reductions that take XR (Extended Reality) traffic into account. For example, reducing device power consumption that takes XR traffic into account requires addressing the characteristics of XR services. XR service characteristics include the periodicity of XR traffic, the occurrence of multiple flows, the occurrence of jitter, latency, and reliability. XR (Extended Reality) is a general term for technologies such as VR (Virtual Reality), AR (Augmented Reality), and MR (Mixed Reality).

[0043] XR traffic is expected to arrive periodically according to FPS (frames per second).

[0044] As a method for intermittently receiving periodically arriving XR traffic, the above-mentioned CDRX (Connected Mode Discontinuous Reception) function can be utilized. Note that 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.

[0045] The method of intermittently receiving XR traffic using the CDRX function has the following challenges:

[0046] Figure 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. Figure 6 shows a cycle having a sleep period and an active period in the CDRX function, and the arrival timing of XR traffic. Figure 6 shows an example in which the cycle in the CDRX function is 20 ms and the arrival period of XR traffic is 16.67 ms.

[0047] While the arrival period of XR traffic is a non-integer value such as 6.67 ms, 8.33 ms, or 16.67 ms, the period of the CDRX function is specified as an integer value such as 10 ms or 20 ms. Therefore, the arrival period of XR traffic and the period of the CDRX function are not aligned. As a result, as shown in Figure 6, XR traffic does not arrive during the active period of the period of the CDRX function, and the terminal may not be able to receive XR traffic.

[0048] In the following, the cycle in the CDRX function will be referred to as the CDRX cycle.

[0049] Jitter is expected to occur in XR traffic. Jitter corresponds to minute fluctuations in the time domain relative to the arrival timing of the original XR traffic. For example, for an XR traffic arrival period of 16.67 ms, jitter of up to [-4, 4] ms is expected.

[0050] For example, the effects of jitter increase the likelihood that XR traffic will arrive outside the CDRX on duration. If the likelihood of XR traffic arriving outside the CDRX on duration increases, the time required to receive the XR traffic increases, increasing reception delays. For example, if XR traffic arrives after the on duration, it is more likely that it will not be received until the next CDRX cycle, increasing reception delays.

[0051] For example, if the CDRX on duration is increased to avoid XR traffic arriving outside the CDRX on duration due to the effects of jitter, the active time increases and the terminal's power consumption increases.

[0052] On the other hand, if the CDRX on duration is shortened to suppress an increase in terminal power consumption, the possibility of XR traffic arriving outside the CDRX on duration period increases, further increasing reception delays.

[0053] As described above, when the periods are not aligned and / or jitter occurs, there is a possibility that XR traffic may arrive outside the CDRX on duration. In other words, a discrepancy occurs between the timing (or arrival period) at which a signal transmitted from a base station arrives and the timing (or reception period) at which the terminal receives the signal, and the terminal may not be able to properly receive the signal transmitted from the base station.

[0054] In this embodiment, a method of appropriately adapting the CDRX on duration (or the CDRX active period) is proposed to prevent XR traffic from arriving outside the CDRX on duration. Here, adapting the CDRX on duration (or the CDRX active period) may correspond to adapting the CDRX on duration (or the CDRX active period) so that the time when XR traffic arrives is included in the CDRX on duration (or the CDRX active period). Hereinafter, adapting the CDRX on duration (or the CDRX active period) is referred to as adaptation related to the CDRX on duration (or the CDRX active period).

[0055] In the following description, adaptation related to CDRX on duration may be abbreviated as "adaptation."

[0056] Note that the CDRX on duration may be read as the CDRX active period. Furthermore, the CDRX on duration may be interchangeable with other expressions such as the on period, the active period, and the wake-up period. Hereinafter, the CDRX on duration will be abbreviated as the on period as appropriate. Furthermore, in the CDRX cycle, a period different from the CDRX on duration may be referred to as a sleep period. The on period is an example of a period in which the terminal can receive a signal, and the sleep period is an example of a period in which the terminal cannot receive a signal. Note that there may be a signal that the terminal can receive during the sleep period.

[0057] Proposal 1 shows a method of notifying or specifying (information related to) adaptation regarding CDRX on duration. For example, in Proposal 1, adaptation regarding CDRX on duration may be notified to a terminal or may be specified in advance. Here, the base station (or the network side) may notify the terminal of the adaptation. Upon receiving the notification of the adaptation, the terminal applies the adaptation regarding CDRX on duration. Alternatively, the terminal applies the adaptation regarding CDRX on duration according to the specification.

[0058] Note that notification of adaptation may be replaced with notification of information related to adaptation. The information notified to the terminal may be included in a signal transmitted from the base station to the terminal, for example. Notification of information to the terminal may correspond to reception of information by the terminal.

[0059] Note that "prescribed" may mean being defined by specifications, rules, etc., or may correspond to the defined content. Alternatively, prescribed may mean being implemented in a communication device (e.g., a base station or a terminal), or may correspond to the implemented function. Note that, for example, prescribing certain content may not necessarily involve notifying the content, or may involve notifying the content. Also, for example, notifying certain content may correspond to notifying the defined content after the content has been defined, or the information may not be prescribed.

[0060] In Proposals 2 to 4, the adapted element is indicated as the adaptation related to CDRX on duration. The adapted element may be an adjusted element (or parameter).

[0061] In Proposal 2, an example in which adaptation of the start position of CDRX on duration is notified or specified is shown as an example of adaptation related to CDRX on duration. In other words, Proposal 2 shows an example in which the parameter to be adjusted is the start position of CDRX on duration.

[0062] In Proposal 3, as an example of adaptation related to CDRX on duration, an example is shown in which adaptation of the duration 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 duration of CDRX on duration.

[0063] In Proposal 4, an example in which adaptation of the CDRX cycle length is notified or specified is shown as an example of adaptation related to the CDRX on duration. In other words, Proposal 4 shows an example in which the parameter to be adjusted is the CDRX cycle length.

[0064] Note that adaptation may be replaced with other expressions such as control, adjustment, management, change, arrangement, rearrangement, etc. For example, adaptation regarding CDRX on duration may be replaced with expressions such as control regarding CDRX on duration or adjustment regarding CDRX on duration.

[0065] Each proposal will be explained below.

[0066] <Proposal 1> In Proposal 1, the terminal may be notified of or specified about the adaptation regarding the CDRX on duration.

[0067] The method of notifying the adaptation regarding the CDRX on duration is not particularly limited. For example, the adaptation regarding the CDRX on duration may be notified by at least one of downlink control information (DCI), information exchanged in a medium access control (MAC) layer (e.g., MAC control element (CE)), and information signaled by radio resource control (RRC). The information signaled by RRC may be referred to as an RRC information element or information notified by RRC signaling.

[0068] Notification of adaptation related to CDRX on duration may correspond to notification of information related to adaptation. The information related to adaptation may include at least one of information indicating whether or not to apply adaptation, information indicating a position in the CDRX on duration to which adaptation is applied, and information indicating an element to be adapted.

[0069] Furthermore, conditions and / or procedures for performing adaptation regarding CDRX on duration may be specified. 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. Alternatively, the conditions and / or procedures for performing adaptation regarding CDRX on duration may be conditions and / or procedures for determining the position of the CDRX on duration to which adaptation is applied when information regarding adaptation is notified. 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.

[0070] Information related to adaptation may be signaled using multiple methods. For example, part of the information related to adaptation may be signaled by DCI, and the remaining part may be signaled by RRC signaling. Alternatively, part of the information related to adaptation may be predefined, and the remaining part may be signaled by DCI.

[0071] <Proposal 1-1> Proposal 1-1 explains examples of two notification methods.

[0072] Fig. 7 is a diagram showing a first example of a notification method. Fig. 7 shows two examples, Example 1 and Example 2. The horizontal axis in each example in Fig. 7 represents the time axis. Each example in Fig. 7 shows that the CDRX on duration and the CDRX sleep period occur periodically.

[0073] Hereinafter, the CDRX on duration may be abbreviated as "on period", and the CDRX sleep period may be abbreviated as "sleep period".

[0074] In each example of FIG. 7, one rectangle corresponds to a time interval having a certain time width. Hereinafter, one rectangle may be referred to as one "unit interval." However, one unit interval does not have to correspond to a specific time interval defined by specifications, etc. For example, one unit interval in each example of FIG. 7 does not have to correspond to a specific time interval such as one symbol, one slot, or one frame.

[0075] Note that one unit interval may correspond to a specific time interval defined by specifications, etc., or multiple unit intervals may correspond to one specific time interval, or a specific first number of unit intervals may correspond to a specific second number of time intervals, and the first number may be different from the second number.

[0076] Furthermore, 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 is not limited to this.

[0077] Also, for ease of explanation, each example in FIG. 7 shows an identification number that identifies the on-period. Note that, although identification numbers are shown in FIG. 7 for ease of explanation, when the terminal performs reception control using the CDRX function, an identification number does not need to be set for each on-period. Also, the identification numbers in each example in FIG. 7 are numbers based on the relative positional relationship of each on-period, and do not need to be numbers that indicate absolute positions. For example, in each example in FIG. 7, the on-period marked "#1" does not need to indicate the earliest on-period in the terminal.

[0078] In the following description, an ON period marked with "#1" will be referred to as ON period #1.

[0079] In Example 1 of Figure 7, information regarding adaptation is notified in on-period #1. In Example 1 of Figure 7, the terminal receives information regarding adaptation in on-period #1 and applies the adaptation in on-period #2. Here, applying adaptation in on-period #2 may correspond to adjusting parameters related to on-period #2. For example, the parameters related to on-period #2 may be at least one of the start position, end position, and length of on-period #2.

[0080] The received information on adaptation may be included in a control channel (e.g., PDCCH), a data channel (e.g., PDSCH), or another channel. The received information on adaptation may be included in at least one of DCI, information exchanged in the MAC layer (e.g., MAC CE), and information signaled by RRC.

[0081] In example 2 of Fig. 7, information about adaptation is notified during the sleep period between on period #1 and on period #2. In example 2 of Fig. 7, information about adaptation is notified by DCI format 2_6 (e.g., a wake-up signal) that the terminal can receive during the sleep period. In example 2 of Fig. 7, the terminal receives information about adaptation by DCI format 2_6 and applies the adaptation during on period #2.

[0082] Note that, although Example 2 of Fig. 7 illustrates an example in which information related to adaptation is notified by DCI format 2_6, the present disclosure is not limited to this. For example, information related to adaptation may be notified by at least one of the notification methods in DCI, MAC, and RRC. Information related to adaptation may be notified during an on period as shown in Example 1 of Fig. 7, or may be notified during a sleep period as shown in Example 2 of Fig. 7. Alternatively, information related to adaptation may be notified before performing the operation of the CDRX function (for example, before performing discontinuous reception).

[0083] As described above, in Proposal 1-1, the terminal applies adaptation during the on-period immediately after receiving information related to adaptation (on-period #2 in FIG. 7). This allows the terminal to perform appropriate reception processing during the on-period in which adaptation is applied promptly. Furthermore, since signals can be received promptly, reception delays can be avoided.

[0084] <Proposal 1-2> In the above-described proposal 1-1, an example has been shown in which adaptation is applied in the on-duration immediately after the timing at which information about adaptation is received (on-duration #2 in FIG. 7), but the present disclosure is not limited to this. In proposal 1-2, information about adaptation related to future CDRX on durations may be notified, rather than the CDRX on duration immediately after the information about adaptation is notified.

[0085] 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 the time axis.

[0086] Each example in FIG. 8 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, similar to FIG.

[0087] While Figure 7 shows an example in which adaptation is applied in on-period #2, which corresponds to the on-period immediately after information about adaptation is notified, Figure 8 shows an example in which adaptation is applied not in on-period #2 immediately after information about adaptation is notified, but in on-period #3, which corresponds to the next on-period.

[0088] In example 1 of Fig. 8, information related to adaptation is notified in on-duration #1. In example 1 of Fig. 8, the terminal receives information related to adaptation in on-duration #1 and applies the adaptation in on-duration #3.

[0089] In example 2 of Fig. 8, information about adaptation is notified during the sleep period between on period #1 and on period #2. In example 2 of Fig. 8, information about adaptation is notified by DCI format 2_6 (e.g., a wake-up signal) that the terminal can receive during the sleep period. In example 2 of Fig. 8, the terminal receives information about adaptation by DCI format 2_6 and applies the adaptation during on period #3.

[0090] It should be noted that which on-period the adaptation is applied to may be notified or specified. It should be noted that hereinafter, information indicating which on-period the adaptation is applied to may be referred to as information about the on-period to which the adaptation is applied. The information about the on-period to which the adaptation is applied may be included in information about the adaptation, or may be notified separately from information about the adaptation.

[0091] Information regarding the on-period to which adaptation is applied may or may not be notified to the terminal. In each example of Fig. 8, information indicating that the on-period to which adaptation is applied is on-period #3 may or may not be notified to the terminal.

[0092] When information about on-durations to which adaptation is applied is notified, the terminal may determine the on-durations to which adaptation is applied based on the information about the on-durations to which adaptation is applied.

[0093] When information regarding on-periods to which adaptation is applied is not notified, the terminal may determine the on-periods to which adaptation is applied based on the timing at which the information regarding adaptation is received and specific conditions. In other words, in this case, the terminal may determine the on-periods to which adaptation is applied based on a specification regarding to which on-periods adaptation is applied.

[0094] For example, as one determination method, the terminal may determine that the Nth (N is an integer equal to or greater than 1) on-duration occurring after the timing of receiving information about adaptation is the on-duration to which adaptation is applied. Note that the examples in Fig. 7 may be considered to correspond to the case where N=1 in this determination method, and the examples in Fig. 8 may be considered to correspond to the case where N=2 in this determination method.

[0095] As described above, in Proposal 1-2, the terminal applies adaptation during 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 the information about adaptation. This allows adaptation to be applied at the appropriate timing, making it possible to perform reception processing appropriately. This also makes it possible to control the time from receiving the information about adaptation to applying the adaptation, ensuring that the terminal has enough time to start applying adaptation and can receive signals during the on-period in which adaptation has been applied, making it possible to perform reception processing appropriately. This also makes it possible to avoid a situation in which the terminal fails to apply adaptation in time after receiving the information about adaptation, resulting in a failure to receive signals and a reception delay.

[0096] Furthermore, in Proposal 1-2, information about adaptation can be notified at any timing before the on-period in which adaptation is applied, enabling flexible notification. For example, early notification is possible so that adaptation can be applied in accordance with the timing of XR traffic predicted in advance. Furthermore, information about adaptation can be notified together in accordance with the timing of notifying other control information, enabling efficient notification.

[0097] <Proposal 1-3> Although the above-described proposals 1-1 and 1-2 show examples in which adaptation is applied during one ON period, the present disclosure is not limited to this. The following proposal 1-3 shows an example in which adaptation is applied during multiple ON periods.

[0098] Fig. 9 is a diagram showing a third example of a notification method. Two examples, Example 1 and Example 2, are shown in Fig. 9. The horizontal axis in each example in Fig. 9 represents the time axis.

[0099] 7 and 8, each example in FIG. 9 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.

[0100] In Example 1 of Figure 9, information about adaptation is notified in on-period #1. In Example 1 of Figure 9, the terminal receives information about adaptation in on-period #1, applies adaptation in on-period #3, and does not apply adaptation in on-period #2 or on-period #4 and thereafter. In other words, in Example 1 of Figure 9, the terminal may apply adaptation only in on-period #3.

[0101] In Example 2 of Figure 9, information about adaptation is notified in on-period #1. In Example 2 of Figure 9, the terminal receives information about adaptation in on-period #1, applies adaptation in on-periods #2 and #3, and does not apply adaptation from on-period #4 onwards. In other words, in Example 2 of Figure 9, the terminal may apply adaptation only in on-periods #2 and #3.

[0102] In Example 2 of Figure 9, an example is shown in which adaptation is applied to on-periods #2 and #3 that are adjacent in time, but it may also be notified that adaptation is applied to multiple on-periods that are not adjacent in time (e.g., on-periods #2 and #4).

[0103] As in Proposal 1-2, the on-period to which the adaptation is applied may be notified or specified.

[0104] For example, when information indicating which on-durations adaptation is to be applied to (e.g., information regarding on-durations to which adaptation is to be applied) is notified to a terminal, adaptation may be applied only to the notified on-durations. In this case, adaptation may be applied to the notified on-durations, and adaptation may not be applied to on-durations other than the notified on-duration.

[0105] Furthermore, for example, if it is specified which on-periods the adaptation is to be applied to, the adaptation may be applied only to the specified on-periods. In this case, the adaptation may be applied to the specified on-periods, but not to on-periods other than the specified on-periods.

[0106] Also, for example, which one or more ON periods to which adaptation is applied may be notified or specified. Note that information indicating which one or more ON periods to which adaptation is applied may be included in information regarding the ON periods to which adaptation is applied.

[0107] For example, at least one of the number of on-periods to which adaptation is applied, the duration to which adaptation is applied, the start positions of the on-periods to which adaptation is applied, and the end positions of the on-periods to which adaptation is applied may be notified or specified. Also, the cycle to which adaptation is applied may be notified or specified. The cycle to which adaptation is applied may indicate, for example, that adaptation is applied to one on-period out of four on-periods adjacent in time and that adaptation is not applied to the remaining three on-periods.

[0108] 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 notified or specified as an absolute position. Alternatively, 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 notified or specified as a relative position based on a certain position. The certain position may be, for example, the position (or timing) at which information about adaptation is received, the position (or timing) at which reception by CDRX starts, or another position (or timing).

[0109] Furthermore, the start position of an ON period to which adaptation is applied and / or the end position of an ON period to which adaptation is applied may be represented by a System Frame Number (SFN) position, a slot position, and a symbol position.

[0110] Furthermore, the application period for which the adaptation is applied may be notified or specified. For example, the application period for which the adaptation is applied may be notified or specified using a timer.

[0111] 9 shows an example in which information related to adaptation is notified during an on-period (e.g., on-period #1), but the present disclosure is not limited thereto. For example, as shown in example 2 of FIG. 7, information related to adaptation may be notified by DCI format 2_6.

[0112] As described above, in Proposals 1-3, a terminal applies adaptation to one or more on-periods based on a specification and / or notification. As a result, even if there is a discrepancy between the arrival timing of a base station signal and the on-periods at intervals corresponding to multiple on-periods, the terminal can perform appropriate reception processing during the multiple on-periods to which adaptation is applied. Furthermore, because information about adaptation for multiple on-periods can be notified collectively, the number of notifications of information about adaptation can be reduced, and an increase in power consumption required for receiving information can be suppressed.

[0113] <Proposal 1-4> Proposals 1-4 provide examples where adaptation is applied continuously.

[0114] Fig. 10 is a diagram showing a fourth example of a notification method. Two examples, Example 1 and Example 2, are shown in Fig. 10. The horizontal axis in each example in Fig. 10 represents the time axis.

[0115] Similar to FIGS. 7 to 9, each example in FIG. 10 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.

[0116] In example 1 of Fig. 10, information about adaptation is notified in on-period #1. In example 1 of Fig. 10, the terminal receives information about adaptation in on-period #1 and applies adaptation in each on-period from on-period #2 onwards.

[0117] In example 2 of Fig. 10, information about adaptation is notified in on-period #1. In example 2 of Fig. 10, the terminal receives information about adaptation in on-period #1 and applies adaptation in each on-period from on-period #3 onwards.

[0118] As in Proposal 1-2 and Proposal 1-3, the on-period to which the adaptation is applied may be notified or specified.

[0119] For example, when information indicating which on-periods adaptation is to be applied to (e.g., information regarding on-periods to which adaptation is to be applied) is notified to a terminal, adaptation may be continuously applied to the notified on-period and on-periods following that on-period.

[0120] For example, in example 1 of Figure 10, if the terminal is notified of information indicating that the on-period to which adaptation is applied is on-period #2, the terminal will continuously apply adaptation in on-period #2 and on-periods after on-period #2.

[0121] Furthermore, for example, if it is specified which on-periods the adaptation is to be applied to, the adaptation may be applied to the specified on-period and on-periods following that on-period.

[0122] For example, in 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 applies adaptation in on-period #2 and on-periods after on-period #2.

[0123] Whether or not to apply adaptation continuously may be notified or specified. For example, whether or not to apply adaptation continuously may be switched based on a specific condition. For example, the terminal may determine whether or not to apply adaptation continuously based on a specific condition.

[0124] 10 shows an example in which information related to adaptation is notified during an on-period (e.g., on-period #1), but the present disclosure is not limited thereto. For example, as shown in example 2 of FIG. 7, information related to adaptation may be notified by DCI format 2_6.

[0125] As described above, in Proposals 1-4, a terminal applies adaptation to multiple consecutive on-periods based on specifications and / or notifications. This allows the terminal to perform appropriate reception processing during multiple on-periods to which adaptation is applied, even if, for example, there is a continuous discrepancy between the arrival timing of a signal from a base station and the on-period. Furthermore, because information about adaptation for multiple on-periods can be notified collectively, the number of notifications of information about adaptation can be reduced, and an increase in power consumption required for receiving information can be suppressed.

[0126] In Proposals 1-4, when application of a continuous adaptation is stopped, information indicating that application of the adaptation is stopped may be notified. Furthermore, when the applied adaptation is switched, information indicating that application of the adaptation is switched may be notified. Here, switching of adaptation may correspond to, for example, switching of the element to be adapted and / or switching of the content of the adaptation.

[0127] <Proposal 1-5> Proposal 1-5 shows an example in which a time constraint is set between when information about adaptation is notified and when the adaptation can begin to be applied.

[0128] Note that the time constraint may be replaced with other notations such as a timeline, an application delay, etc.

[0129] Proposals 1-5 include Alternation 1 (Alt. 1) and Alternation 2 (Alt. 2) shown below.

[0130] (Alt.1) When information about adaptation is notified to a terminal, the application destination of the adaptation may be notified so as to satisfy the time constraint. In other words, the terminal does not expect to be notified of an application destination of adaptation that does not satisfy the time constraint. In this case, the terminal may also expect to be notified of an application destination of adaptation that satisfies the time constraint. Here, the application destination of the adaptation may be at least one on-duration to which the adaptation is applied.

[0131] (Alt.2) The terminal may start applying adaptation after being notified of information about adaptation and after the time constraint is satisfied. In this case, the terminal does not start applying adaptation from the time when the information about adaptation is notified until the time constraint is satisfied.

[0132] In Alt.1, the terminal does not need to determine whether the time constraint is satisfied, and the base station determines the application destination of the adaptation that satisfies the time constraint and notifies the terminal of the application destination of the adaptation that satisfies the time constraint.On the other hand, in Alt.2, the terminal determines whether the time constraint is satisfied and determines the application destination of the adaptation based on the determination.

[0133] Fig. 11 is a diagram showing a fifth example of a notification method. Two examples, Alt. 1 and Alt. 2, are shown in Fig. 11. The horizontal axis of Alt. 1 and Alt. 2 in Fig. 11 represents the time axis.

[0134] 7 to 10, Alt.1 and Alt.2 in Fig. 11 show 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. Also, Alt.1 and Alt.2 in Fig. 11 show time intervals that are constrained as "time constraints."

[0135] In Alt.1 of FIG. 11, information about adaptation is notified to the terminal during on-period #1. In Alt.1 of FIG. 11, on-period #2 is an on-period within the time interval constrained by the "time constraint." In other words, on-period #2 is an on-period that does not satisfy the time constraint. Therefore, on-period #2 is not included in the applications of adaptation. In this case, the terminal does not need to assume that information indicating that on-period #2 is the application of adaptation is notified. Also, in this case, the terminal may assume that information indicating that on-periods after on-period #3 are the application of adaptation is notified.

[0136] In Alt.2 of FIG. 11, information about adaptation is notified to the terminal during on-period #1. In Alt.2 of FIG. 11, on-period #2 is an on-period within the time interval constrained by the "time constraint." That is, on-period #2 is an on-period that does not satisfy the time constraint. In this case, the terminal determines that on-period #2 is an on-period that does not satisfy the time constraint, and that on-period #3 is an on-period that satisfies the time constraint. The terminal then applies adaptation from on-period #3 onwards.

[0137] 11 shows an example in which adaptation is applied to on-periods #4 and onward that satisfy the time constraint, but the present disclosure is not limited to this. For example, the range of on-periods that satisfy the time constraint to which adaptation is applied may be specified or notified. For example, it may be specified or notified that adaptation is applied to the earliest K on-periods (K is an integer greater than or equal to 1) of on-periods that satisfy the time constraint.

[0138] The information on the time constraint may be specified or notified. For example, at least one of the length of the time constrained as the time constraint, the start position (or reference position) of the time constrained as the time constraint, etc. may be specified or notified.

[0139] The start position (or reference position) of the time constrained as a time constraint may be, for example, the timing when information about adaptation is notified, or the start position or end position of the on-period when information about adaptation is notified.

[0140] While FIG. 11 illustrates an example in which information related to adaptation is reported during an on-period (e.g., on-period #1), the present disclosure is not limited to this. For example, as illustrated in example 2 of FIG. 7, information related to adaptation may be reported using DCI format 2_6. In this case, the start position (or reference position) of the time constrained as the time constraint may be the timing at which DCI format 2_6 is reported, or the start position or end position of the on-period that occurs immediately after the timing at which DCI format 2_6 is reported.

[0141] As described above, in Proposals 1-5, the terminal applies adaptation during the on-period (on-period #3 in FIG. 11) after the time period constrained based on the time constraint has elapsed since receiving the information about adaptation. This allows adaptation to be applied at the appropriate timing, making it possible to perform reception processing appropriately. This also makes it possible to control the time from receiving the information about adaptation to applying adaptation, so that the terminal can secure the time it takes to start applying adaptation and can receive signals during the on-period in which adaptation has been applied, making it possible to perform reception processing appropriately.

[0142] As described above, in Proposal 1, adaptation related to CDRX on duration is notified to or specified for the terminal. In this case, in Proposal 1, the terminal applies adaptation during an on-duration at an appropriate timing after receiving information related to adaptation. This makes it possible to avoid a discrepancy between the arrival timing of a signal from the base station and the reception timing (reception period) of the terminal, and allows the terminal to perform appropriate reception processing.

[0143] Note that information indicating whether or not Proposal 1 described above is supported may be defined or notified. For example, UE capability indicating whether or not Proposal 1 described above is supported may be defined or notified. UE capability is an example of terminal capability information, and may be notified from the terminal to the base station.

[0144] Also, for example, a UE capability indicating whether or not at least one of the examples shown in Proposal 1-1 to Proposal 1-5 or each Alt is supported may be defined or notified. When a UE capability indicating whether or not two or more of the examples shown in Proposal 1-1 to Proposal 1-5 or each Alt are supported is defined, the UE capabilities indicating whether or not the two or more are supported may be defined as individual UE capabilities or as a common UE capability.

[0145] For example, a UE capability may be defined that indicates whether or not information related to adaptation is supported to be notified during the on period, as shown in Example 1 of Fig. 7. Also, a UE capability may be defined that indicates whether or not information related to adaptation is supported to be notified by DCI format 2_6, as shown in Example 2 of Fig. 7. These UE capabilities may be defined as individual UE capabilities, or as a common UE capability.

[0146] Also, for example, as shown in FIG. 11, a UE capability related to a time constraint before adaptation starts to be applied may be specified or notified. For example, a time constraint that a terminal can support may be specified or notified as a UE capability. For example, multiple UE types that can support different time constraints may be specified, and information indicating which of the specified UE types the terminal is a UE type of may be notified as a UE capability. Here, different time constraints may be time constraints that differ from each other in 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.

[0147] Note that, in each example of Proposal 1 described above, an example has been shown in which information related to adaptation is notified in one on-period or sleep period (e.g., DCI format 2_6), but the present disclosure is not limited to this. For example, information related to adaptation may be notified in multiple on-periods, multiple sleep periods (e.g., DCI format 2_6), or a combination of on-periods and sleep periods. The method of notification may be specified in advance, may be notified to the terminal, or may be notified to the base station as the terminal's UE capability.

[0148] <Proposal 2> In Proposal 2, the adaptation of the position of the CDRX on duration may be signaled or specified.

[0149] <Proposal 2-1> In Proposal 2-1, the terminal shifts the start position of an ON period in which adaptation is applied. Note that shifting the start position of an ON period in which adaptation is applied may correspond to shortening or extending the length of a sleep period immediately before the ON period in which adaptation is applied.

[0150] In the following, an on-period to which an adaptation is applied by notification or regulation may be referred to as on-period #X (X is an integer greater than or equal to 1). Also, an on-period following on-period #X may be referred to as on-period #Y (Y is an integer greater than X).

[0151] The number of on-periods to which adaptation is applied (e.g., the number of X) may be one or more. Also, the number of on-periods following on-period #X (e.g., the number of Y) may be one or more. When there are multiple Xs, Y may be an integer greater than the largest X among the multiple Xs.

[0152] For example, if there are multiple on-periods to which adaptation is applied by notification or regulation, on-period #X may correspond to the earliest on-period among the multiple on-periods. In this case, the notification or regulation may indicate that adaptation is applied to some of on-period #Y.

[0153] In Proposal 2-1, the length of the on-period #X does not need to be changed. In Proposal 2-1, the length of the on-period #X may be the same as when adaptation is not applied. In other words, in Proposal 2, the end position of the on-period #X may be shifted in accordance with the change in the start position of the on-period #X. In this case, the shift amount and time direction for shifting the start position of the on-period #X may be the same as the shift amount and time direction for shifting the end position of the on-period #X.

[0154] In Proposal 2-1, any of the following Alts may be applied to the start position of the on-period (e.g., on-period #Y) that follows the on-period (e.g., on-period #X) to which adaptation is applied.

[0155] (Alt.1) The start position of on-period #Y when adaptation is not applied is maintained. In this case, the length of the sleep period between on-period #X and the on-period #Y following on-period #X is extended. Here, the amount of change in the length of the sleep period may be the same as the amount of shift in the start position of on-period #X.

[0156] The extension of the length of the period may be simply referred to as the extension of the period. Furthermore, "extension" may be replaced with other expressions such as "increase," "expansion," or "expansion."

[0157] The shortening of the length of a period may be simply referred to as shortening the period. Furthermore, "shortening" may be replaced with other expressions such as "decrease" or "reduction." Furthermore, the length of a period may be referred to as a period length or interval.

[0158] (Alt.2) The cycle when adaptation is not applied is maintained. In other words, in this case, the start position of the on-period #Y is also shifted in the same way as the start position of the on-period #X. Here, 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.

[0159] (Alt.3) As with Alt.2, the period is maintained, but unlike Alt.2, adaptation is also applied to on-period #Y. In this case, the start positions of on-period #X and on-period #Y are shifted. In other words, in Alt.3, the period after adaptation is applied is maintained in each CDRX cycle.

[0160] Examples of Alt.1 to Alt.3 will be described with reference to FIG.

[0161] Fig. 12 is a diagram showing a first example of the application of adaptation. Fig. 12 shows an example in which adaptation is not applied ("without adaptation") and an example in which adaptation is applied in on-period #2 ("with adaptation"). In the 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.

[0162] Each example in FIG. 12, similar to FIGS. 7 to 11, shows an example in which one cycle (CDRX cycle) when adaptation is not applied includes an on period having two unit intervals and a sleep period having a length of three unit intervals.

[0163] In FIG. 12, adaptation is applied to on period #2. In other words, in this case, on period #X corresponds to on period #2, and on period #Y corresponds to on period #3 and onward. In this example, the start position of on period #2 is shifted forward by one unit interval. Note that the amount of shift is not limited to this. Note that shifting the start position of on period #2 forward by one unit interval may be equivalent to shortening the length of the sleep period before on period #2 by one unit interval.

[0164] 12, the start position of ON period #3 is maintained at the same position as in the example where adaptation is not applied. Maintaining the start position of ON period #3 at the same position as in the example where adaptation is not applied may be equivalent to extending the length of the sleep period between ON period #2 and ON period #3.

[0165] Although in Alt. 1, the start and end positions of an on-period #Y following an on-period #X to which adaptation is applied are maintained at the same positions as those of an on-period #Y to which adaptation is not applied, the present disclosure is not limited to this. For example, the start and end positions of an on-period #Y following an on-period #X to which adaptation is applied may gradually approach the same positions as those of an on-period #Y to which adaptation is not applied.

[0166] 12, for example, if the start and end positions of on-period #2 are shifted forward by a shift amount ΔT2, the start and end positions of on-period #3 may be shifted forward by a shift amount ΔT3, which is smaller than the shift amount ΔT2. The start and end positions of on-period #4 are then maintained at the same positions as on-period #4 when adaptation is not applied. In this way, the further away an on-period is from on-period #2, the closer it may be to the same positions as on-period #Y when adaptation is not applied.

[0167] 12, the CDRX cycle after ON period #2 is maintained at the same period as in the example where adaptation is not applied. In this case, the start positions of ON periods after ON period #3 are shifted forward by one unit interval compared to the start positions when adaptation is not applied.

[0168] Although Alt. 2 shows an example in which the period when no adaptation is applied is maintained, the present disclosure is not limited to this. For example, the period may be shifted in stages to approach the period when no adaptation is applied.

[0169] 12, for example, if the start and end positions of on-period #2 are shifted forward by a shift amount ΔT2 (one unit interval in FIG. 12), the start and end positions of on-period #3 may be shifted forward by a shift amount ΔT3 (e.g., half the length of a unit interval) that is smaller than the shift amount ΔT2. Then, the start and end positions of on-period #4 are maintained at the same positions as on-period #4 when adaptation is not applied. In this way, the CDRX cycle farther from on-period #2 may gradually approach the same period as when adaptation is not applied.

[0170] 12, the CDRX cycle after on-period #2 is maintained at the same period as when adaptation is applied. Here, the period when adaptation is applied may be a period including an on-period having two unit intervals and a sleep period having a length equal to the length of the two unit intervals.

[0171] As shown in Alt. 3 of the example in which the adaptation in FIG. 12 is applied, the CDRX cycles from on period #2 onward each include an on period having two unit intervals and a sleep period having a length of two unit intervals.

[0172] 12 shows an example in which the start position is shifted, but 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 described with reference to FIG. 13.

[0173] Fig. 13 is a diagram showing a second example of the application of adaptation. As in Fig. 12, Fig. 13 shows an example in which adaptation is not applied ("without adaptation") and an example in which adaptation is applied in on-period #2 ("with adaptation"). As in Fig. 12, the example in which adaptation is applied in on-period #2 is shown with three distinct examples, Alt.1 to Alt.3. Note that the horizontal axis in Fig. 13 represents the time axis.

[0174] Each example in FIG. 13, similar to FIGS. 7 to 11, shows an example in which one cycle (CDRX cycle) when adaptation is not applied includes an on period having two unit intervals and a sleep period having a length of three unit intervals.

[0175] In the example in which adaptation is applied to ON period #2 in FIG. 13 , the start position of ON period #2 is shifted back by one unit interval. Note that the amount of shift is not limited to this. Note that shifting the start position of ON period #2 back by one unit interval may be equivalent to extending the length of the sleep period before ON period #2 by one unit interval.

[0176] 13, the start position of ON period #3 is maintained at the same position as in the example where adaptation is not applied. Maintaining the start position of ON period #3 at the same position as in the example where adaptation is not applied may be equivalent to shortening the length of the sleep period between ON period #2 and ON period #3.

[0177] 13, the CDRX cycle after ON period #2 is maintained at the same period as in the example where adaptation is not applied. In this case, the start positions of ON periods after ON period #3 are shifted back by one unit interval from the start positions when adaptation is not applied.

[0178] 13, the CDRX cycle after on-period #2 is maintained at the same cycle as when adaptation is applied. Here, the cycle when adaptation is applied may be a cycle including an on-period having two unit intervals and a sleep period having a length of four unit intervals.

[0179] As shown in Alt. 3 of the example in which the adaptation is applied in FIG. 13, the CDRX cycles from on period #2 onward each include an on period having two unit intervals and a sleep period having a length of four unit intervals.

[0180] As described above, in Proposal 2-1, the terminal shifts the position (start position and end position) of the ON period to which adaptation is applied in the time direction. This prevents a mismatch between the arrival timing of the base station signal and the terminal's reception timing (reception period), allowing the terminal to perform reception processing appropriately. Furthermore, in Proposal 2-1, the length of the ON period is not changed, so an increase in power consumption in the terminal can be suppressed.

[0181] <Proposal 2-2> Proposal 2-1 shows an example in which, during an on-period to which adaptation is applied (on-period #X), the start position of on-period #X is shifted and the end position of on-period #X is shifted. Proposal 2-2 shows an example in which, during an on-period to which adaptation is applied (on-period #X), the start position of on-period #X is shifted while the end position of on-period #X is maintained at the same position as when adaptation is not applied. By shifting the start position of on-period #X and maintaining the end position of on-period #X at the same position as when adaptation is not applied, the length of on-period #X is changed.

[0182] In Proposal 2-2, any of the following Alts may be applied to the start position of an on-period (e.g., on-period #Y) that follows an on-period (e.g., on-period #X) to which adaptation is applied.

[0183] (Alt.1) The start and end positions of the on-period #Y when adaptation is not applied are maintained, and the length of the sleep period between on-period #X and on-period #Y is not changed.

[0184] (Alt.2) The start position of on period #Y is shifted in the same way as the start position of on period #X. The end position of on period #Y is also shifted in the same way as the start position of on period #X. Here, the amount by which the start position and end position of on period #Y are shifted may be the same as the amount by which the start position of on period #X is shifted.

[0185] (Alt.3) In Alt.1 and Alt.2, adaptation is not applied to the on-period #Y, but in Alt.3, adaptation is also applied to the on-period #Y. In this case, the start position of the on-period #Y is shifted in the same way as the start position of the on-period #X is shifted. And, like the end position of the on-period #X, the end position of the on-period #Y is maintained at the same position as when adaptation is not applied. In other words, in Alt.3, the period after adaptation is applied is maintained in each CDRX cycle.

[0186] Fig. 14 is a diagram showing a third example of the application of adaptation. Fig. 14 shows an example in which adaptation is not applied ("without adaptation") and an example in which adaptation is applied in on-period #2 ("with adaptation"). In the 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.

[0187] Each example in FIG. 14 shows an example in which one cycle (CDRX cycle) when no adaptation is applied includes an on period having two unit intervals and a sleep period having a length of three unit intervals, similar to FIGS. 7 to 11.

[0188] In the example in which adaptation is applied to ON period #2 in FIG. 14, the start position of ON period #2 is shifted forward by one unit interval. Note that the amount of shift is not limited to this. Note that shifting the start position of ON period #2 forward by one unit interval may be equivalent to shortening the length of the sleep period before ON period #2 by one unit interval.

[0189] In the example of FIG. 14 in which adaptation is applied to ON period #2, the end position of ON period #2 is maintained at the same position as when adaptation is not applied.

[0190] 14, the start and end positions of ON period #3 are maintained at the same positions as in the example where adaptation is not applied. Maintaining the start position of ON period #3 at the same positions as in the example where adaptation is not applied may be equivalent to maintaining the length of the sleep period between ON period #2 and ON period #3.

[0191] 14, in which adaptation is applied, the start and end positions of on periods after on period #3 are shifted forward by one unit interval, similar to the shift in the start position of on period #2, compared to when adaptation is not applied. In other words, in this case, the sleep period between on period #2 and on period #3 is shortened by one unit interval.

[0192] In Alt.3 of FIG. 14 , an example in which adaptation is applied, adaptation is applied to each of the on-periods after on-period #3. In this example, the start positions of the on-periods after on-period #3 are shifted forward by one unit interval relative to the case in which adaptation is not applied, similar to the shift in the start position of on-period #2. Meanwhile, the end positions of the on-periods after on-period #3 are maintained at the same positions as the case in which adaptation is not applied, similar to the end positions of on-period #2. In other words, in this case, the period when adaptation is applied is maintained in each CDRX cycle. Here, the period when adaptation is applied may be a period including an on-period having three unit intervals and a sleep period having a length of two unit intervals.

[0193] As shown in Alt. 3 of the example in FIG. 14 where the adaptation is applied, the CDRX cycles from on period #2 onward each include an on period having three unit intervals and a sleep period having a length of two unit intervals.

[0194] As described above, in Proposal 2-2, the terminal shifts either the start or end position of the on-period to which adaptation is applied in the time direction, while maintaining the other position at the same position as when adaptation is not applied. This avoids a mismatch between the arrival timing of the signal from the base station and the reception timing (reception period) of the terminal, allowing the terminal to perform reception processing appropriately. Furthermore, Proposal 2-2 shifts either the start or end position of the on-period to which adaptation is applied in the time direction, making control easy. Furthermore, Proposal 2-2 changes the length of some on-periods but leaves the length of the remaining on-periods unchanged, thereby suppressing increases in power consumption in the terminal.

[0195] As described above, in Proposal 2, as an example of the application of adaptation, the adaptation of the position of the CDRX on duration is notified or specified. In this case, in Proposal 2, the terminal moves the on-duration to an appropriate timing (or appropriate period), extends the on-duration, or shortens the on-duration. This makes it possible to avoid a discrepancy between the arrival timing of a signal from the base station and the reception timing (reception period) of the terminal, and allows the terminal to perform appropriate reception processing.

[0196] In the above-described Proposal 2 (Proposal 2-1 and Proposal 2-2), at least one of the amount of shift by which the position of the on-period to which adaptation is applied is shifted and the direction in which the position of the on-period to which adaptation is applied is shifted 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 and end positions. For example, one of the amount of shift by which the start position of the on-period is shifted and the direction in which the start position of the on-period is shifted may be notified, and the other may be specified. For example, the amount of shift by which the start position of the on-period is shifted may be specified as a fixed amount, and information indicating whether the shift direction is forward or backward in the time direction may be notified. Alternatively, for example, one of the amount of shift by which the end position of the on-period is shifted and the direction in which the end position of the on-period is shifted may be notified, and the other may be specified. For example, the amount of shift by which the end position of the on-period is shifted may be specified as a fixed amount, and information indicating whether the shift direction is forward or backward in the time direction may be notified.

[0197] The shift amount may be indicated in specific time units such as SFN, slot, and symbol, or may be indicated by absolute values ​​of time widths such as ms and μs, or may be indicated by a combination of these. 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 by absolute values ​​of time widths such as ms and μs, or may be indicated by a combination of these.

[0198] Furthermore, in the above-mentioned 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 notified. The start position of the on-period may be indicated in a specific time unit such as SFN, slot, or symbol, or may be indicated as an overall position, or may be indicated as a relative position from a certain reference position. The certain reference position may be, for example, the immediately preceding on-period.

[0199] Furthermore, instead of notifying information indicating the start and end positions of the on-period to which adaptation is applied, one of the start and end positions of the on-period to which adaptation is applied and the length of the on-period may be notified.

[0200] <Proposal 3> In Proposal 3, the adaptation of the CDRX on duration may be signaled or specified.

[0201] In Proposal 3, the terminal changes the duration of an on-period #X to which adaptation is applied (e.g., on-period #X). The duration change may be at least one of extending the duration and shortening the duration. An example of extending the duration of on-period #X is shown below, but the present disclosure is not limited to this. For example, the duration of on-period #X may be shortened.

[0202] In Proposal 3, any of the following Alts may be applied to the start position of the on-period (e.g., on-period #Y) that follows the on-period to which adaptation is applied (e.g., on-period #X). The following Alts may be applied not only when the on-period #X is extended, but also when the on-period #X is shortened.

[0203] (Alt.1) The start position of on-period #Y when adaptation is not applied is maintained. In this case, the length of the sleep period between on-period #X and on-period #Y is shortened. Here, the length by which the sleep period is shortened may be the same as the length by which on-period #X is extended.

[0204] Furthermore, the length of the ON period #Y may be extended in the same manner as the ON period #X, or may be maintained at the length when no adaptation is applied.

[0205] (Alt.2) The start position of the on period #Y may be shifted in accordance with an increase or decrease in the length of the on period #X. In this case, the amount by which the start position of the on period #Y is shifted may be the same as the length by which the on period #X is extended.

[0206] Furthermore, the length of the ON period #Y may be extended in the same manner as the ON period #X, or may be maintained at the length when no adaptation is applied.

[0207] Fig. 15 is a diagram showing a fourth example of the application of adaptation. Fig. 15 shows an example in which adaptation is not applied ("without adaptation") and an example in which adaptation is applied in on-period #2 ("with adaptation"). In the example in which adaptation is applied in on-period #2, two examples, Alt.1 and Alt.2, are shown separately. Note that the horizontal axis in Fig. 15 represents the time axis.

[0208] Each example in FIG. 15, similar to FIGS. 7 to 11, shows an example in which one cycle (CDRX cycle) when adaptation is not applied includes an on period having two unit intervals and a sleep period having a length of three unit intervals.

[0209] In the example in which adaptation is applied to ON period #2 in FIG. 15 , the length of ON period #2 is extended by one unit interval. Note that the amount of extension is not limited to this. Note that extending the length of ON period #2 by one unit interval may be equivalent to shifting the end position of ON period #2 back by one unit interval.

[0210] 15, the start positions of on-periods after on-period #3 are maintained at the same positions as in the example where adaptation is not applied. Note that maintaining the start position of on-period #3 at the same position as in the example where adaptation is not applied may be equivalent to shortening the length of the sleep period between on-period #2 and on-period #3.

[0211] In Alt. 1 of the example in which the adaptation in FIG. 15 is applied, the duration of the on-periods after on-period #3 may be extended in the same manner as on-period #2.

[0212] 15, the start and end positions of the on periods after on period #3 are shifted back in sequence in accordance with the extension of the length of on period #2. In other words, in this case, the length of each sleep period is maintained the same as when no adaptation is applied.

[0213] In Alt. 2 of the example in which the adaptation in FIG. 15 is applied, the duration of the on-periods after on-period #3 may be extended in the same manner as on-period #2.

[0214] As described above, in Proposal 3, the adaptation of the CDRX on duration may be notified or specified. In this case, in Proposal 3, the terminal extends or shortens the on duration at an appropriate timing (or for an appropriate period). This makes it possible to avoid a mismatch between the arrival timing of a signal from the base station and the reception timing (reception period) of the terminal, and allows the terminal to perform reception processing appropriately.

[0215] In Proposal 3, the length of time by which the on-period is extended may be specified or notified.

[0216] Although 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 length of the shortened period may be specified or notified.

[0217] Furthermore, in Proposal 3, adaptation may or may not be applied to an on-period (on-period #Y) following an on-period (on-period #X) to which adaptation is applied.

[0218] <Suggestion 4> In proposal 4, the adaptation of the CDRX cycle length may be signaled or specified.

[0219] Fig. 16 is a diagram showing a fifth example of the application of adaptation. Fig. 16 shows an example in which adaptation is not applied ("without adaptation") and an example in which adaptation is applied ("with adaptation"). In the examples in which adaptation is applied, two examples are shown, distinguishing between example 1 in which adaptation is applied in on-period #1 and example 2 in which adaptation is applied in on-period #2. The horizontal axis in Fig. 16 represents the time axis.

[0220] Each example in FIG. 16, similar to FIGS. 7 to 11, shows an example in which one cycle (CDRX cycle) when adaptation is not applied includes an on period having two unit intervals and a sleep period having a length of three unit intervals.

[0221] 16, Example 1 and Example 2 in which adaptation is applied have in common the fact that the application of adaptation changes the CDRX cycle to one including an on-period having two unit intervals and a sleep period having a length equal to the length of the two unit intervals. However, Example 1 and Example 2 in which adaptation is applied differ in the timing of notification of adaptation and application of adaptation. For example, Example 1 and Example 2 differ in the on-period to which adaptation is applied.

[0222] 16, adaptation is applied to ON period #1, and the length of the sleep period following ON period #1 is shortened by one unit interval. Note that the amount of shortening is not limited to this.

[0223] 16, adaptation is applied to ON period #2, and the length of the sleep period preceding and following ON period #2 is shortened by one unit interval. Note that the amount of shortening is not limited to this.

[0224] In addition, in Examples 1 and 2 of Figure 16, examples are shown in which the length of the CDRX cycle including an on-period to which adaptation is not applied (e.g., on-period #3) is changed, but the length of the CDRX cycle of the on-period to which adaptation is not applied may be the same as in the example to which adaptation is not applied ("No Adaptation").

[0225] As described above, in Proposal 4, the adaptation of the CDRX cycle length is notified or specified. In this case, in Proposal 4, the terminal adjusts the length of the CDRX cycle so that the on-period is positioned at an appropriate timing (or appropriate period). For example, the adjustment of the CDRX cycle length includes at least one of extending or shortening the on-period and extending or shortening the sleep period. This makes it possible to avoid a mismatch between the arrival timing of a signal from the base station and the reception timing (reception period) of the terminal, allowing the terminal to perform appropriate reception processing.

[0226] The above-described proposals may be used in combination. The proposals to be combined may be fixed, or the combination of proposals may be changed. The content of the proposal combination may be specified or notified.

[0227] Furthermore, the above-described proposals may be switched between and used. The proposal to switch between may be specified or notified.

[0228] Also, a UE capability indicating whether one of the above proposals is supported may be defined or notified, or a UE capability indicating whether two or more of the above proposals are supported or not may be defined or notified.

[0229] The unit of time in each of the above examples may be ms, or other units such as s, μs, ns, etc. Furthermore, the unit of time may be a specific time unit such as SFN, slot, or symbol.

[0230] Note that the on duration (or on period) may refer to the time when the on duration timer is running.

[0231] In the above-described embodiments, the method of determining whether to apply adaptation, the method of determining the on-duration to which adaptation is applied, the method of determining the elements to be adapted (e.g., parameters to be adjusted by adaptation), and the method of adjusting the elements (e.g., the method of determining the amount by which the start position is shifted) are not particularly limited. For example, a base station may determine at least one of whether to apply adaptation, the on-duration to which adaptation is applied, the elements to be adapted, and the method of adjusting the elements based on specific criteria (e.g., criteria related to transmission and reception timing, reception quality, traffic volume, reliability required by traffic, etc.). Alternatively, a terminal may determine at least one of whether to apply adaptation, the on-duration to which adaptation is applied, the elements to be adapted, and the method of adjusting the elements based on specific criteria. Furthermore, at least one of whether to apply adaptation, the on-duration to which adaptation is applied, the elements to be adapted, and the method of adjusting the elements may be specified in advance.

[0232] For example, the base station may determine to apply adaptation when the timing of the XR traffic is not included in the interval of CDRX on duration, and may determine not to apply adaptation when the timing of the XR traffic is included in the interval of CDRX on duration.

[0233] In the above-described embodiment, an example was shown in which the signal (intermittently received signal) transmitted from the base station and received by the terminal during the on period is an XR traffic signal, but the present disclosure is not limited to this. The signal intermittently received by the terminal may be a signal different from the XR traffic signal.

[0234] Furthermore, in the above-described embodiment, the CDRX function is given as an example of an intermittent reception method, but the present disclosure is not limited to this. Each proposal of the above-described embodiment may be used in a reception method other than the CDRX function.

[0235] Furthermore, in the above-described embodiment, an example has been described in which a terminal intermittently receives a signal transmitted from a base station, but the present disclosure is not limited to this. For example, the proposals of the above-described embodiment may also be used when a base station intermittently receives a signal transmitted from a terminal. Alternatively, the proposals of the above-described embodiment may also be used when a terminal intermittently receives a signal transmitted from another terminal in sidelink communication.

[0236] In the above-described embodiment, active may be interpreted as valid, enabled, activated, etc., and inactive may be interpreted as invalid, disabled, sleep, etc. A "signal" may be interpreted as information, control information, notification, etc.

[0237] (Device configuration) Next, a description will be given of an example of the functional configuration of the base station 100 and the terminal 200 that execute the processes and operations described above. The base station 100 and the terminal 200 may have the functions to implement the above-described embodiments. However, the base station 100 and the terminal 200 may each have only a part of the functions of the embodiments.

[0238] <Base station> 17 is a block diagram showing an example of a configuration of a base station 100 according to an embodiment of the present disclosure. The base station includes, for example, a transmitting unit 101, a receiving unit 102, and a control unit 103. The base station 100 communicates with a terminal 200 (see FIG. 18) wirelessly. The transmitting unit 101 and the receiving unit 102 may be collectively referred to as a communication unit.

[0239] Transmitter 101 transmits a DL signal to terminal 200. For example, transmitter 101 transmits the DL signal under the control of controller 103. For example, the DL signal may include information indicating scheduling related to signal transmission by terminal 200 (for example, an UL grant), control information of higher layers, etc.

[0240] For example, transmitting unit 101 transmits, as DL signals, various control signals (such as RRC layer control signals), reference signals, data signals, etc. to terminal 200. Transmitting unit 101 transmits, as DL signals, various signals, channels, setting information, control information, etc. described in the above embodiments to terminal 200.

[0241] For example, the transmitting unit 101 transmits information related to adaptation generated by the control unit 103 to the terminal 200. Furthermore, the transmitting unit 101 transmits a data signal (for example, an XR traffic signal) generated by the control unit 103 to the terminal 200.

[0242] Receiving unit 102 receives the UL signal transmitted from terminal 200. For example, receiving unit 102 receives the UL signal under the control of control unit 103.

[0243] For example, the receiving unit 102 receives, as UL signals, signals including terminal capability information of the terminal 200 (for example, UE capability), various control signals, reference signals, data signals, and the like from the terminal 200.

[0244] 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 .

[0245] For example, the control unit 103 acquires information such as data and control information from the upper layer and outputs it to the transmitting unit 101. The control unit 103 also outputs the data, control information, etc. received from the receiving unit 102 to the upper layer.

[0246] For example, control unit 103 allocates resources used for transmitting and receiving DL signals and / or resources used for transmitting and receiving UL signals based on signals (e.g., data and control information, etc.) received from terminal 200 and / or data and control information, etc. acquired from a higher layer. Information related to the allocated resources may be included in control information transmitted to terminal 200.

[0247] The control unit 103 performs operations other than the transmission and reception described in the above embodiment (note that these operations may be performed by the transmission unit 101 and / or the reception unit 102).

[0248] For example, control unit 103 determines whether adaptation is applicable and, if so, the on-period to which adaptation is to be applied. Based on the determination result, control unit 103 generates information related to adaptation to be transmitted to terminal 200. Also, for example, control unit 103 determines elements to be adapted (for example, parameters to be adjusted (at least one of the start position, end position, and length of the on-period)) and determines the amount by which the determined parameters are to be adjusted. Control unit 103 may generate information including the determined content as control information.

[0249] <terminal> 18 is a block diagram showing an example of a configuration of terminal 200 according to an embodiment of the present disclosure. Terminal 200 includes, for example, a receiving unit 201, a transmitting unit 202, and a control unit 203. Terminal 200 communicates with base station 100 (see FIG. 17) by radio, for example. Note that receiving unit 201 and transmitting unit 202 may be collectively referred to as a communication unit.

[0250] The receiving unit 201 receives a DL signal transmitted from the base station 100. For example, the receiving unit 201 receives the DL signal under the control of the control unit 203.

[0251] For example, the receiving unit 201 receives, as DL signals, various control signals, reference signals, data signals, etc. from the base station 100. The receiving unit 201 receives, as DL signals, various signals, channels, setting information, control information, etc. described in the above embodiments from the base station 100.

[0252] For example, during the on-period, the receiving unit 201 receives a signal from the base station 100. The received signal may include information related to adaptation. The received signal may also include an XR traffic signal.

[0253] The transmitter 202 transmits the UL signal to the base station 100. For example, the transmitter 202 transmits the UL signal under the control of the controller 203.

[0254] For example, the transmitter 202 transmits, as UL signals, signals including information about the processing capacity of the terminal 200, various control signals, reference signals, data signals, and the like to the base station 100.

[0255] The control unit 203 controls the overall (communication) operation of the terminal 200, including the reception processing in the reception unit 201 and the transmission processing in the transmission unit 202.

[0256] For example, the control unit 203 acquires information such as data and control information from a higher layer and outputs it to the transmitting unit 202. Also, the control unit 203 outputs, for example, the data and control information received from the receiving unit 201 to the higher layer.

[0257] For example, control unit 203 applies adaptation to the on-period based on received information related to adaptation and / or predefined information. Note that the on-period to which adaptation is applied may be determined based on received information related to adaptation, or may be determined based on predefined conditions. Also, for example, control unit 103 determines elements to be adapted (e.g., parameters to be adjusted (at least one of the start position, end position, and length of the on-period)) based on predefined conditions and / or received information, and determines the amount by which the determined parameters are to be adjusted. Control unit 103 applies adaptation based on the determined content.

[0258] The control unit 203 performs operations other than the transmission and reception described in the above embodiment (note that these operations may be performed by the reception unit 201 and / or the transmission unit 202).

[0259] The present disclosure has been described above. Note that the division of items in the above description is not essential to the present disclosure, and items described in two or more items may be used in combination as needed, and items described in one item may be applied to items described in another item (unless they are inconsistent).

[0260] <Hardware configuration, etc.> The block diagrams used to explain the above embodiments show functional blocks. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method for realizing each functional block is not particularly limited. That is, each functional block may be realized using a single device that is physically or logically coupled, or may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, using wires, wirelessly, etc.) and these multiple devices. The functional block may also be realized by combining the single device or multiple devices with software.

[0261] Functions include, but are not limited to, judgment, determination, judgment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, election, establishment, comparison, assumption, expectation, consideration, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocation, mapping, and assignment. For example, a functional block (component) that performs transmission is called a transmitting unit or transmitter. As mentioned above, there are no particular limitations on how these functions are implemented.

[0262] For example, a base station, a user terminal, or the like according to 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 a base station 100 and a terminal 200 according to an embodiment of the present disclosure. The above-described base station 100 and terminal 200 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.

[0263] In the following description, the term "apparatus" can be interpreted as a circuit, a device, a unit, etc. The hardware configuration of base station 100 and terminal 200 may be configured to include one or more of the apparatuses shown in the drawings, or may be configured to exclude some of the apparatuses.

[0264] Each function in the base station 100 and the terminal 200 is realized by loading predetermined software (programs) onto hardware such as the processor 1001 and the memory 1002, causing the processor 1001 to perform calculations, control communication by the communication device 1004, and control at least one of reading and writing data in the memory 1002 and the storage 1003.

[0265] The processor 1001 controls the entire computer by running, for example, an operating system. The processor 1001 may be configured by a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, etc. For example, the above-mentioned control units 103, 203, etc. may be realized by the processor 1001.

[0266] Furthermore, the processor 1001 reads programs (program codes), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002 and executes various processes in accordance with these. The programs used are those that cause a computer to execute at least some of the operations described in the above-described embodiments. For example, the control unit 103 of the base station 100 and the control unit 203 of the terminal 200 may be implemented by a control program stored in the memory 1002 and running on the processor 1001, and similar implementations may be made for other functional blocks. While the above-described various processes have been described as being executed by one processor 1001, they may also be executed simultaneously or sequentially by two or more processors 1001. The processor 1001 may be implemented by one or more chips. The programs may be transmitted from a network via a telecommunications line.

[0267] The memory 1002 is a computer-readable recording medium and may be configured, for example, by at least one of a read-only memory (ROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), a random access memory (RAM), etc. The memory 1002 may also be called a register, a cache, a main memory (primary storage device), etc. The memory 1002 can store executable programs (program codes), software modules, etc. for implementing a wireless communication method according to an embodiment of the present disclosure.

[0268] Storage 1003 is a computer-readable recording medium, and may be composed of at least one of, for example, an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (e.g., a compact disk, a digital versatile disk, a Blu-ray disc), a smart card, a flash memory (e.g., a card, a stick, a key drive), a floppy disk, a magnetic strip, etc. Storage 1003 may also be referred to as an auxiliary storage device. The above-mentioned storage medium may be, for example, a database, a server, or other appropriate medium including at least one of memory 1002 and storage 1003.

[0269] The communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, or a communication module. The communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, the above-mentioned transmitter 101, receiver 102, receiver 201, transmitter 202, etc. may be realized by the communication device 1004. The communication device 1004 may be implemented with the transmitter and receiver physically or logically separated.

[0270] The input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives input from the outside. The output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that outputs to the outside. The input device 1005 and the output device 1006 may be integrated into one device (for example, a touch panel).

[0271] Furthermore, 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 between each device.

[0272] Furthermore, base station 100 and terminal 200 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), or a field programmable gate array (FPGA), and some or all of the functional blocks may be realized by the hardware. For example, processor 1001 may be implemented using at least one of these pieces of hardware.

[0273] (Summary of the embodiment) According to an embodiment of the present disclosure, there is provided a terminal including: a receiving unit that receives information regarding adjustment of a cycle 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 adjusts the active period based on the information and controls reception of the signal during the adjusted active period.

[0274] With the above configuration, it is possible to avoid a discrepancy between the arrival timing of a signal from a base station and the reception timing (reception period) of the terminal based on the information regarding adjustment, and the terminal can perform appropriate reception processing.

[0275] In the terminal, the receiver receives, during a first active period, the information regarding adjustment of a cycle including a second active period that follows the first active period.

[0276] With the above configuration, it is possible to avoid a discrepancy between the arrival timing of a signal from a base station and the reception timing (reception period) of the terminal based on the information regarding adjustment, and the terminal can perform appropriate reception processing.

[0277] In the terminal, the receiver receives, during the sleep period, the information included in downlink control information that can be received during the sleep period.

[0278] With the above configuration, control is performed based on information that can be received during the sleep period, so that the reception process can be changed quickly.

[0279] In the terminal, the control unit adjusts a third active period after a specific time has elapsed since receiving the information.

[0280] With the above configuration, information regarding adjustment can be notified in advance, making it possible to provide flexible notification.

[0281] In the terminal, the control unit adjusts the active periods.

[0282] With the above configuration, information for a plurality of active periods can be notified collectively, so that the number of times information is notified can be reduced and an increase in power consumption required for receiving information can be suppressed.

[0283] According to an embodiment of the present disclosure, a base station is provided that includes a control unit that generates information regarding adjustment of 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, and a transmission unit that transmits the information.

[0284] With the above configuration, it is possible to avoid a discrepancy between the arrival timing of a signal from a base station and the reception timing (reception period) of the terminal based on the information regarding adjustment, and the terminal can perform appropriate reception processing.

[0285] According to an embodiment of the present disclosure, there is provided a terminal comprising: a control unit that adjusts an 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; and a receiving unit that receives the signal in the adjusted active period.

[0286] With the above configuration, it is possible to avoid a discrepancy between the arrival timing of a signal from a base station and the reception timing (reception period) of the terminal, and to perform appropriate reception processing at the terminal.

[0287] In the terminal, the control unit shifts a first active period in the time direction among the plurality of active periods that are periodically provided.

[0288] With the above configuration, by shifting in the time direction, it is possible to avoid a discrepancy between the arrival timing of a signal from a base station and the reception timing (reception period) of the terminal, thereby suppressing an increase in power consumption in the terminal.

[0289] In the terminal, the 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.

[0290] With the above configuration, the time position is not changed, and therefore the control can be prevented from becoming complicated.

[0291] In the terminal, the 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.

[0292] With the above configuration, the time interval is not changed, and therefore the control can be prevented from becoming complicated.

[0293] In the terminal, the control unit changes the length of a first active period among the plurality of active periods that are periodically provided and / or a first sleep period that follows the first active period.

[0294] With the above configuration, by changing the length of some active periods or sleep periods, it is possible to avoid a discrepancy between the arrival timing of a signal from a base station and the reception timing (reception period) of the terminal, thereby suppressing an increase in power consumption in the terminal.

[0295] According to an embodiment of the present disclosure, a base station is provided that includes: a control unit that generates a signal to be received in an active period after a cycle having an active period in which a terminal receives a signal and a sleep period in which the terminal does not receive the signal has been adjusted; and a transmission unit that transmits the signal.

[0296] With the above configuration, it is possible to avoid a discrepancy between the arrival timing of a signal from a base station and the reception timing (reception period) of the terminal, and to perform appropriate reception processing at the terminal.

[0297] (Supplementary explanation of the embodiment) Although the embodiments of the present disclosure have been described above, the disclosed invention is not limited to such embodiments, and those skilled in the art will understand various modifications, alterations, alternatives, and substitutions. While specific numerical examples have been used to facilitate understanding of the invention, unless otherwise specified, these numerical values ​​are merely examples, and any appropriate values ​​may be used. The division of items in the above description is not essential to the present disclosure; two or more items may be combined as needed, and items described in one item may apply to items described in another item (unless inconsistent). The boundaries between functional units or processing units in the functional block diagram do not necessarily correspond to the boundaries between physical components. The operations of multiple functional units may be performed by a single physical component, or the operations of a single functional unit may be performed by multiple physical components. The order of processing steps described in the embodiments may be reversed as long as there is no contradiction. For convenience of processing description, base station 100 and terminal 200 have been described using functional block diagrams. However, such devices may be implemented using hardware, software, or a combination thereof. The software operated by the processor of the base station 100 according to an embodiment of the present disclosure and the software operated by the processor of the terminal 200 according to an embodiment of the present disclosure may each be stored in random access memory (RAM), flash memory, read-only memory (ROM), EPROM, EEPROM, registers, hard disk (HDD), removable disk, CD-ROM, database, server, or any other suitable storage medium.

[0298] <Information notification, signaling> The notification of information is not limited to the aspects / embodiments described in the present disclosure and may be performed using other methods. For example, the notification of information may be performed by physical layer signaling (e.g., Downlink Control Information (DCI) and Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, and broadcast information (Master Information Block (MIB) and System Information Block (SIB))), other signals, or a combination thereof. Furthermore, the RRC signaling may be referred to as an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like.

[0299] <Applicable systems> Each aspect / embodiment described in the present disclosure may be any of the following: LTE (Long Term Evolution), LTE-Advanced (LTE-A), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (x is, for example, an integer or decimal number)), FRA (Future Radio Access), NR (new Radio), New radio access (NX), Future generation radio access (FX), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE The present invention may be applied to at least one of systems using 802.20, UWB (Ultra-Wideband), Bluetooth (registered trademark), or other appropriate systems, and next-generation systems that are extended, modified, created, or defined based on these systems. The present invention may also be applied to a combination of multiple systems (e.g., a combination of at least one of LTE and LTE-A with 5G).

[0300] <Processing procedures, etc.> The order of the procedures, sequences, flowcharts, etc. of each aspect / embodiment described in this disclosure may be changed unless it is consistent. For example, the methods described in this disclosure present elements of various steps using an example order, and are not limited to the particular order presented.

[0301] <Base station operation> In the present disclosure, a specific operation described as being performed by a base station may be performed by its upper node in some cases. In a network consisting of one or more network nodes having a base station, it is clear that various operations performed for communication with a terminal may be performed by at least one of the base station and another network node other than the base station (for example, but not limited to, an MME or an S-GW). Although the above example illustrates a case where there is one other network node other than the base station, a combination of multiple other network nodes (for example, an MME and an S-GW) may also be used.

[0302] <Input / output direction> Information, etc. (see the section on information and signals) can be output from a higher layer (or a lower layer) to a lower layer (or a higher layer). It may also be input and output via multiple network nodes.

[0303] <Handling of input and output information> Input and output information may be stored in a specific location (for example, memory) or may be managed using a management table. Input and output information may be overwritten, updated, or added to. Output information may be deleted. Input information may be sent to another device.

[0304] <Judgment method> The determination may be made based on a value represented by one bit (0 or 1), a Boolean value (true or false), or a numerical comparison (e.g., comparison with a predetermined value).

[0305] <Variations of form, etc.> Each aspect / embodiment described in this disclosure may be used alone, in combination, or switched depending on the implementation. Furthermore, notification of predetermined information (e.g., notification that "X is true") is not limited to being done explicitly, but may be done implicitly (e.g., not notifying the predetermined information).

[0306] Although the present disclosure has been described in detail above, it is clear to those skilled in the art that the present disclosure is not limited to the embodiments described herein. The present disclosure can be implemented in modified and altered forms without departing from the spirit and scope of the present disclosure as defined by the claims. Therefore, the description of the present disclosure is intended to be illustrative and does not have any limiting meaning on the present disclosure.

[0307] <Software> Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.

[0308] Software, instructions, information, etc. may also be transmitted or received over a transmission medium. For example, if software is transmitted from a website, server, or other remote source using wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and / or wireless technologies (such as infrared, microwave), then these wired and / or wireless technologies are included within the definition of transmission media.

[0309] <Information, Signals> The information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0310] Note that terms explained in this disclosure and terms necessary for understanding this disclosure may be replaced with terms having the same or similar meanings. For example, at least one of a channel and a symbol may be a signal (signaling). Furthermore, a signal may be a message. Furthermore, a component carrier (CC) may be called a carrier frequency, a cell, a frequency carrier, etc.

[0311] <System, Network> As used in this disclosure, the terms "system" and "network" are used interchangeably.

[0312] <Parameter, channel name> Furthermore, the information, parameters, etc. described in the present disclosure may be expressed using absolute values, may be expressed using relative values ​​from a predetermined value, or may be expressed using other corresponding information. For example, a radio resource may be indicated by an index.

[0313] The names used for the above-described parameters are not intended to be limiting in any way. Furthermore, the mathematical expressions using these parameters may differ from those explicitly disclosed in this disclosure. The various channels (e.g., PUCCH, PDCCH, etc.) and information elements may be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not intended to be limiting in any way.

[0314] <Base station> In this disclosure, terms such as "base station (BS)," "radio base station," "fixed station," "NodeB," "eNodeB (eNB)," "gNodeB (gNB)," "access point," "transmission point," "reception point," "transmission / reception point," "cell," "sector," "cell group," "carrier," and "component carrier" may be used interchangeably. Base stations may also be referred to by terms such as macrocell, small cell, femtocell, and picocell.

[0315] A base station can accommodate one or more (e.g., three) cells. When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be divided into multiple smaller areas, and each smaller area can be provided with communication service by a base station subsystem (e.g., a small indoor base station (RRH: Remote Radio Head)). The term "cell" or "sector" refers to a part or the entire coverage area of ​​a base station and / or base station subsystem that provides communication service within this coverage.

[0316] In the present disclosure, the base station transmitting information to a terminal may be interpreted as the base station instructing the terminal to control or operate based on the information.

[0317] <Mobile station> In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," etc. may be used interchangeably.

[0318] A mobile station may also be referred to by those 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 terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.

[0319] <Base station / mobile station> At least one of the base station and the mobile station may be referred to as a transmitting device, a receiving device, a communication device, etc. At least one of the base station and the mobile station may be a device mounted on a mobile object, the mobile object itself, etc. The mobile object refers to a movable object, and may move at any speed. Naturally, this also includes cases where the mobile object is stationary. Examples of the mobile object include, but are not limited to, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, handcars, rickshaws, ships and other watercraft, airplanes, rockets, satellites, drones (registered trademark), multicopters, quadcopters, balloons, and objects mounted thereon. The mobile object may also be an autonomous mobile object operating based on an operational command. It may be a vehicle (e.g., a car, an airplane, etc.), an unmanned mobile object (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). At least one of the base station and the mobile station may be a device that does not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.

[0320] Furthermore, a base station in the present disclosure may be read as a user terminal. For example, the aspects / embodiments of the present disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between multiple user terminals (which may be called, for example, D2D (Device-to-Device) or V2X (Vehicle-to-Everything)). In this case, the functions of the base station 100 described above may be configured to be possessed by the terminal 200. Furthermore, terms such as "uplink" and "downlink" may be read as terms corresponding to communication between terminals (for example, "side"). For example, terms such as an uplink channel and a downlink channel may be read as a side channel.

[0321] Similarly, the user terminal in the present disclosure may be read as a base station, in which case the base station 100 may be configured to have the functions of the terminal 200 described above.

[0322] Fig. 20 shows an example configuration of a vehicle 2001. As shown in Fig. 20, the vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, front wheels 2007, rear wheels 2008, an axle 2009, an electronic control unit 2010, various sensors 2021 to 2029, an information service unit 2012, and a communication module 2013. Each aspect / embodiment described in the present disclosure may be applied to a communication device mounted on the vehicle 2001, and may be applied to the communication module 2013, for example.

[0323] The drive unit 2002 is configured, for example, by an engine, a motor, or a hybrid of an engine and a motor. The steering unit 2003 includes at least a steering wheel (also called a handle), 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.

[0324] The electronic control unit 2010 is composed of a microprocessor 2031, a memory (ROM, RAM) 2032, and a communication port (IO port) 2033. Signals are input to the electronic control unit 2010 from various sensors 2021 to 2029 provided in the vehicle 2001. The electronic control unit 2010 may also be called an ECU (Electronic Control Unit).

[0325] The signals from the various sensors 2021 to 2029 include a current signal from a current sensor 2021 that senses the current of the motor, a rotation speed signal of the front and rear wheels obtained by a rotation speed sensor 2022, an air pressure signal of the front and rear wheels obtained by an air pressure sensor 2023, a vehicle speed signal obtained by a vehicle speed sensor 2024, an acceleration signal obtained by an acceleration sensor 2025, an accelerator pedal depression amount signal obtained by an accelerator pedal sensor 2029, a brake pedal depression amount signal obtained by a brake pedal sensor 2026, a shift lever operation signal obtained by a shift lever sensor 2027, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by an object detection sensor 2028.

[0326] The information service unit 2012 is composed of various devices, such as a car navigation system, an audio system, speakers, a television, and a radio, for providing (outputting) various information such as driving information, traffic information, and entertainment information, and one or more ECUs for controlling these devices. The information service unit 2012 uses information acquired from external devices via the communication module 2013, etc., to provide various multimedia information and multimedia services to the occupants of the vehicle 2001.

[0327] The information service unit 2012 may include input devices (e.g., keyboards, mice, microphones, switches, buttons, sensors, touch panels, etc.) that accept input from the outside, and may also include output devices (e.g., displays, speakers, LED lamps, touch panels, etc.) that output to the outside.

[0328] The driving assistance system unit 2030 is composed of various devices that provide functions for preventing accidents and reducing the driver's driving burden, such as a millimeter-wave radar, a LiDAR (Light Detection and Ranging), a camera, a positioning locator (e.g., GNSS, etc.), map information (e.g., high-definition (HD) map, autonomous vehicle (AV) map, etc.), a gyro system (e.g., an IMU (Inertial Measurement Unit), an INS (Inertial Navigation System), etc.), an AI (Artificial Intelligence) chip, and an AI processor, as well as one or more ECUs that control these devices. The driving assistance system unit 2030 also transmits and receives various information via the communication module 2013 to realize the driving assistance function or the autonomous driving function.

[0329] The communication module 2013 can communicate via the communication port with the microprocessor 2031 and components of the vehicle 2001. For example, the communication module 2013 transmits and receives data via the communication port 2033 to and from the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axle 2009, microprocessor 2031 and memory (ROM, RAM) 2032 in the electronic control unit 2010, and sensors 2021 to 2029, which are provided in the vehicle 2001.

[0330] 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 an external device. For example, it transmits and receives various information to and from the 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.

[0331] The communication module 2013 may transmit at least one of signals from the above-mentioned various sensors 2021-2029 input to the electronic control unit 2010, information obtained based on the signals, and information based on input from the outside (user) obtained via the information service unit 2012 to an external device via wireless communication. The electronic control unit 2010, the various sensors 2021-2029, the information service unit 2012, etc. may be referred to as input units that accept input. For example, the PUSCH transmitted by the communication module 2013 may include information based on the above-mentioned input.

[0332] The communication module 2013 receives various information (traffic information, traffic signal information, vehicle distance information, etc.) transmitted from external devices and displays it on an information service unit 2012 provided in the vehicle 2001. The information service unit 2012 may be called an output unit that outputs information (for example, outputs information to a device such as a display or speaker based on the PDSCH (or data / information decoded from the PDSCH) received by the communication module 2013). The communication module 2013 also stores the various information received from external devices in a memory 2032 that can be used by the microprocessor 2031. Based on the information stored in the memory 2032, the microprocessor 2031 may control the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axles 2009, sensors 2021 to 2029, and the like provided in the vehicle 2001.

[0333] <Terminology and interpretation> As used in this disclosure, the terms "determining" and "determining" may encompass a wide variety of actions. "Determining" and "determining" may include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiring (e.g., searching in a table, database, or other data structure), ascertaining, and the like. "Determining" and "determining" may also include receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory), and the like. Furthermore, "judgment" and "decision" can include regarding resolving, selecting, choosing, establishing, comparing, etc. as having been "judged" or "decided." In other words, "judgment" and "decision" can include regarding some action as having been "judged" or "decided." Furthermore, "judgment (decision)" can be interpreted as "assuming," "expecting," "considering," etc.

[0334] The terms "connected," "coupled," or any variation thereof, refer to any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are "connected" or "coupled" to each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, "connected" may be read as "access." As used in this disclosure, two elements may be considered to be "connected" or "coupled" to each other using one or more wires, cables, and / or printed electrical connections, as well as electromagnetic energy having wavelengths in the radio frequency range, microwave range, and optical (both visible and invisible) range, as some non-limiting and non-exhaustive examples.

[0335] <Reference signal> The reference signal may be abbreviated as RS (Reference Signal) or may be called a pilot depending on the applicable standard.

[0336] <The meaning of "based on"> As used in this disclosure, the phrase "based on" does not mean "based only on," unless expressly stated otherwise. In other words, the phrase "based on" means both "based only on" and "based at least on."

[0337] <"First", "Second"> As used in this disclosure, any reference to an element using a designation such as "first," "second," etc. does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, a reference to a first and a second element does not imply that only two elements may be employed or that the first element must in some way precede the second element.

[0338] <Means> In the configurations of each of the above devices, the "means" may be replaced with "section", "circuit", "device", etc.

[0339] <Open format> In the present disclosure, when terms such as "include", "including" and their variants are used, these terms are intended to be inclusive, similar to the term "comprising". Further, the term "or" used in the present disclosure is not intended to be an exclusive disjunction.

[0340] <Time units such as TTI, frequency units such as RB, radio frame configuration> A radio frame may be composed of one or more frames in the time domain. Each of the one or more frames in the time domain may be referred to as a subframe. A subframe may further be composed of one or more slots in the time domain. A subframe may have a fixed time length (e.g., 1 ms) that does not depend on numerology.

[0341] Numerology may be a communication parameter applied to at least one of transmission and reception of a certain signal or channel. Numerology may indicate, for example, at least one of subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame configuration, specific filtering processing performed by a transceiver in the frequency domain, specific windowing processing performed by a transceiver in the time domain, etc.

[0342] A slot may be composed of one or more symbols (such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol or a Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol) in the time domain. A slot may be a time unit based on numerology.

[0343] A slot may include multiple minislots. Each minislot may consist of one or multiple symbols in the time domain. A minislot may also be called a subslot. A minislot may consist of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (or PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (or PUSCH) mapping type B.

[0344] The radio frame, subframe, slot, minislot, and symbol all represent time units for transmitting signals, and may be referred to by other names corresponding to the radio frame, subframe, slot, minislot, and symbol.

[0345] For example, one subframe may be called a transmission time interval (TTI), multiple consecutive subframes may be called a TTI, or one slot or one minislot may be called a TTI. That is, at least one of the subframe and the TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (for example, 1-13 symbols), or a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, minislot, etc. instead of a subframe.

[0346] Here, TTI refers to, for example, the smallest time unit for scheduling in wireless communication. For example, in an LTE system, a base station performs scheduling to allocate radio resources (such as frequency bandwidth and transmission power that can be used by each user terminal) to each user terminal in TTI units. However, the definition of TTI is not limited to this.

[0347] The TTI may be a transmission time unit for a channel-encoded data packet (transport block), a code block, a code word, etc., or may be a processing unit for scheduling, link adaptation, etc. When a TTI is given, the time interval (e.g., the number of symbols) to which a transport block, a code block, a code word, etc. is actually mapped may be shorter than the TTI.

[0348] When one slot or one minislot is called a TTI, one or more TTIs (i.e., one or more slots or one or more minislots) may be the minimum time unit for scheduling. Also, the number of slots (minislots) constituting the minimum time unit for scheduling may be controlled.

[0349] A TTI having a time length of 1 ms may be called a regular TTI (TTI in LTE Rel. 8-12), normal TTI, long TTI, regular subframe, normal subframe, long subframe, slot, etc. A TTI shorter than a regular TTI may be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.

[0350] In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length of more than 1 ms, and a short TTI (e.g., a shortened TTI, etc.) may be interpreted as a TTI having a TTI length shorter than the TTI length of a long TTI and equal to or greater than 1 ms.

[0351] A resource block (RB) is a resource allocation unit in the time domain and frequency domain, and may include one or more consecutive subcarriers in the frequency domain. The number of subcarriers included in an RB may be the same regardless of numerology, for example, 12. The number of subcarriers included in an RB may also be determined based on numerology.

[0352] The time domain of an RB may include one or more symbols and may have a length of one slot, one minislot, one subframe, or one TTI. One TTI, one subframe, etc. may each be composed of one or more resource blocks.

[0353] Note that one or more RBs may also be called a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, or the like.

[0354] Furthermore, a resource block may be composed of one or more resource elements (REs). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0355] A Bandwidth Part (BWP) (which may also be referred to as a fractional bandwidth) may represent a subset of contiguous common resource blocks (RBs) for a given numerology on a given carrier, where the common RBs may be identified by their index relative to a common reference point of the carrier. PRBs may be defined in a given BWP and numbered within that BWP.

[0356] The BWP may include a BWP for UL (UL BWP) and a BWP for DL ​​(DL BWP). One or more BWPs may be configured for a UE within one carrier.

[0357] 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 the active BWP. Note that the terms "cell," "carrier," etc. in this disclosure may be read as "BWP."

[0358] The above-described structures of radio frames, subframes, slots, minislots, symbols, etc. are merely examples. For example, 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 subcarriers included in an RB, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, etc. may be changed in various ways.

[0359] <Maximum transmission power> The "maximum transmit power" in this disclosure may mean the maximum value of transmit power, the nominal UE maximum transmit power, or the rated UE maximum transmit power.

[0360] <Article> In this disclosure, where articles are added by translation, such as a, an, and the in English, the disclosure may include that the nouns following these articles are in the plural form.

[0361] <"Different"> In the present disclosure, the term "A and B are different" may mean "A and B are different from each other." The term may also mean "A and B are each different from C." Terms such as "separate" and "coupled" may also be interpreted in the same way as "different." [Industrial Applicability]

[0362] The present disclosure is useful in wireless communication systems. [Explanation of symbols]

[0363] 10. Wireless communication systems 20 NG-RAN 100 base stations (gNB) 200 User Equipment (UE) 101,202 Transmitter 102,201 Receiver 103,203 Control unit 1001 processor 1002 memory 1003 Storage 1004 Communication equipment 1005 Input Device 1006 Output Device 1007 Bus

Claims

1. a control unit that adjusts an 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 the signal during the adjusted active period; Equipped with the control unit shifts a first active period in a time direction among the plurality of active periods that are periodically provided; the control unit adjusts the time position of a second active period following the first active period to the same time position as when the first active period is not adjusted. Terminal.

2. A control unit that adjusts an 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 the signal during the adjusted active period; Equipped with the control unit shifts a first active period in a time direction among the plurality of active periods that are periodically provided; the 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. Terminal.

3. the control unit changes a length of a first active period among the plurality of active periods that are periodically provided and / or a length of a first sleep period that follows the first active period; The terminal according to claim 1 .

4. The control unit shifts the start position of the first active period and shifts the end position of the active period based on a specific shift amount. The terminal according to claim 1 .

5. The control unit shifts the start position of the first active period based on a specific shift amount, and does not shift the end position of the active period. The terminal according to claim 1 .

6. The control unit adjusts the active period based on a specification without receiving instructions from another device. The terminal according to claim 1 .

Images