WO2023079710A1 - Terminal, station de base et procédé de surveillance - Google Patents

Terminal, station de base et procédé de surveillance Download PDF

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Publication number
WO2023079710A1
WO2023079710A1 PCT/JP2021/040873 JP2021040873W WO2023079710A1 WO 2023079710 A1 WO2023079710 A1 WO 2023079710A1 JP 2021040873 W JP2021040873 W JP 2021040873W WO 2023079710 A1 WO2023079710 A1 WO 2023079710A1
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WIPO (PCT)
Prior art keywords
terminal
slot
cell
slots
scell
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PCT/JP2021/040873
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English (en)
Japanese (ja)
Inventor
知也 小原
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株式会社Ｎｔｔドコモ
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Priority to PCT/JP2021/040873 priority Critical patent/WO2023079710A1/fr
Publication of WO2023079710A1 publication Critical patent/WO2023079710A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present invention relates to terminals, base stations, and monitoring methods in wireless communication systems.
  • NR New Radio
  • LTE Long Term Evolution
  • NR Long Term Evolution
  • high frequency bands such as 24.25 to 52.6 GHz and 52.6 to 71 GHz will be used.
  • 3GPP TS 38.213 V16.7.0 (2021-09)
  • 3GPP TS 38.331 V16.6.0 (2021-09)
  • the terminal When scheduling the P(S) Cell PDSCH or PUSCH on the SCell's PDCCH, the terminal needs to assume both P(S) Cell scheduling and SCell scheduling, so the PDCCH monitoring load increases. may increase. In addition, there may be cases where frame boundaries or slot boundaries are different between CCs (component carriers), and it is necessary to deal with such cases.
  • CCs component carriers
  • the present invention has been made in view of the above points, and provides a technique for a terminal to appropriately perform PDCCH monitoring related to cross-carrier scheduling even when frame boundaries or slot boundaries differ between CCs. for the purpose.
  • a receiving unit that receives from a base station an offset indicating a shift of a frame boundary or a slot boundary between a first cell and a second cell; a control unit that monitors a downlink control channel within a range of limits for combinations of corresponding slots of the first cell and slots of the second cell specified by the offset.
  • a technique for a terminal to appropriately perform PDCCH monitoring related to cross-carrier scheduling even when frame boundaries or slot boundaries differ between CCs.
  • FIG. 1 is a diagram for explaining a radio communication system according to an embodiment of the present invention
  • FIG. 1 is a diagram for explaining a radio communication system according to an embodiment of the present invention
  • FIG. FIG. 3 illustrates an example of cross-carrier scheduling
  • FIG. 10 is a diagram showing an example in which frame boundaries are different between cells
  • FIG. 10 is a diagram showing an example in which frame boundaries are different between cells
  • It is a figure which shows the basic operation example of a system.
  • FIG. 4 is a diagram for explaining Example 1;
  • FIG. 4 is a diagram for explaining Example 1;
  • FIG. 4 is a diagram for explaining Example 1;
  • FIG. 4 is a diagram for explaining Example 1;
  • FIG. 4 is a diagram for explaining Example 1;
  • FIG. 4 is a diagram for explaining Example 1;
  • FIG. 4 is a diagram for explaining Example 1;
  • FIG. 4 is a diagram for explaining Example 1;
  • FIG. 4 is a diagram for explaining Example 1;
  • FIG. 4 is
  • FIG. 4 is a diagram for explaining Example 1;
  • FIG. 11 is a diagram for explaining Example 2;
  • FIG. 11 is a diagram for explaining Example 2;
  • FIG. 11 is a diagram for explaining Example 2;
  • FIG. 5 is a diagram for explaining an example common to the first and second embodiments; It is a figure showing an example of functional composition of base station 10 in an embodiment of the invention.
  • 2 is a diagram showing an example of the functional configuration of terminal 20 according to the embodiment of the present invention;
  • FIG. 2 is a diagram showing an example of hardware configuration of base station 10 or terminal 20 according to an embodiment of the present invention;
  • FIG. It is a figure which shows the structural example of a vehicle.
  • the existing technology is, for example, existing NR (eg, Non-Patent Documents 1 and 2).
  • the radio communication system (base station 10 and terminal 20) in this embodiment can basically operate according to existing regulations. However, in order to solve the problem, the base station 10 and the terminal 20 also perform operations that are not in existing regulations. In the description of the embodiments to be described later, operations and the like that are not covered by the existing regulations are mainly described. Numerical values described below are all examples.
  • the duplex system may be a TDD (Time Division Duplex) system, an FDD (Frequency Division Duplex) system, or other (for example, Flexible Duplex, etc.) method may be used.
  • “configuring" the wireless parameters and the like may mean that predetermined values are preset (Pre-configure), or the base station 10 or A wireless parameter notified from the terminal 20 may be set.
  • the notation "A/B" used in this embodiment means “A or B, or A and B".
  • FIG. 1 is a diagram for explaining a wireless communication system according to an embodiment of the present invention.
  • a wireless communication system according to an embodiment of the present invention includes a base station 10 and terminals 20, as shown in FIG. Although one base station 10 and one terminal 20 are shown in FIG. 1, this is an example and there may be more than one.
  • the base station 10 is a communication device that provides one or more cells and performs wireless communication with the terminal 20.
  • a physical resource of a radio signal is defined in the time domain and the frequency domain.
  • OFDM is used as the radio access method.
  • SCS subcarrier spacings
  • a larger SCS is supported in this embodiment.
  • a resource block is composed of a predetermined number (for example, 12) of continuous subcarriers.
  • the terminal 20 detects SSB (SS/PBCH block) when performing initial access to a cell, and identifies SCS in PDCCH, PDSCH, PUCCH, etc., based on PBCH included in SSB, for example.
  • SSB SS/PBCH block
  • a slot is composed of a plurality of OFDM symbols (for example, 14 regardless of subcarrier intervals).
  • An OFDM symbol is hereinafter referred to as a "symbol".
  • a slot is a scheduling unit.
  • a subframe of 1 ms interval is defined, and a frame composed of 10 subframes is defined. Note that the number of symbols per slot is not limited to 14.
  • the frame a frame defined differently from the frame defined above may be used.
  • the base station 10 transmits control information or data to the terminal 20 via DL (Downlink) and receives control information or data from the terminal 20 via UL (Uplink). Both the base station 10 and the terminal 20 can perform beamforming to transmit and receive signals. Also, both the base station 10 and the terminal 20 can apply MIMO (Multiple Input Multiple Output) communication to DL or UL. Also, both the base station 10 and the terminal 20 may communicate via SCell (Secondary Cell) and PCell (Primary Cell) by CA (Carrier Aggregation).
  • SCell Secondary Cell
  • PCell Primary Cell
  • the terminal 20 is a communication device having a wireless communication function, such as a smartphone, mobile phone, tablet, wearable terminal, or M2M (Machine-to-Machine) communication module. As shown in FIG. 1 , the terminal 20 receives control information or data from the base station 10 on the DL and transmits control information or data to the base station 10 on the UL, thereby performing various functions provided by the wireless communication system. Use communication services.
  • a wireless communication function such as a smartphone, mobile phone, tablet, wearable terminal, or M2M (Machine-to-Machine) communication module.
  • M2M Machine-to-Machine
  • FIG. 2 shows a configuration example of a radio communication system when NR-DC (NR-Dual connectivity) is executed.
  • a base station 10A serving as MN (Master Node) and a base station 10B serving as SN (Secondary Node) are provided.
  • the base station 10A and base station 10B are each connected to a core network.
  • Terminal 20 communicates with both base station 10A and base station 10B.
  • a cell group provided by the MN base station 10A is called MCG (Master Cell Group), and a cell group provided by the SN base station 10B is called SCG (Secondary Cell Group).
  • PCell in MCG Master Cell Group
  • PSCell PCell in MCG (Master Cell Group)
  • the operation in this embodiment may be performed with either configuration shown in FIG. 1 or FIG.
  • the DC may be an NR-NR DC, an NR-LTE DC, or a DC other than these.
  • CCs are multiplexed and transmitted and received between multiple base stations
  • carrier aggregation the case where CCs are multiplexed and transmitted and received between multiple base stations
  • CC and cell may be treated synonymously.
  • LBT Listen Before Talk
  • the base station 10 or the terminal 20 transmits when the LBT result is idle, and does not transmit when the LBT result is busy.
  • CC#x P(S)Cell
  • CC#y SCell
  • CC#z SCell
  • the left side of FIG. 3 is an example in which PDCCH scheduling is performed in each of CC#x and CC#y instead of cross-carrier scheduling.
  • PDCCH is an example of a downlink control channel
  • DCI transmitted by PDCCH is an example of control information.
  • the center and right side of FIG. 3 show an example of cross-carrier scheduling. Specifically, the central example shows scheduling from CC#x (P(S)Cell) to CC#y (SCell) and scheduling from CC#y (SCell) to CC#z (SCell). It is
  • scheduling is performed from CC#y (SCell) to CC#x (P(S)Cell).
  • the terminal 20 receives PDCCH (DCI) on CC#y (SCell), and performs data reception or data transmission on CC#x (P(S)Cell) according to the DCI information.
  • DCI PDCCH
  • This embodiment describes an example assuming cross-carrier scheduling from SCell to P(S)Cell, as in the example on the right side of FIG.
  • the technology according to the present invention is not limited to cross-carrier scheduling from SCell to P (S) Cell, but also cross-carrier scheduling from P (S) Cell to SCell, cross-carrier scheduling from one SCell to another SCell. is also applicable.
  • Non-Patent Document 2 Non-Patent Document 2
  • the terminal 20 can grasp the amount of timing deviation between CCs by the notification of this difference.
  • FIG. 4 shows an example in which the PCell and SCell have different frame boundaries.
  • FIG. 5 shows the slot offsets for the case of FIG.
  • the base station 10 can notify the terminal 20 of the difference in slot boundaries between CCs.
  • Example 1 Examples of operations for solving the above problems will be described below as Example 1 and Example 2.
  • the terminal 20 transmits capability information (UE capability) to the base station 10 .
  • This capability information may include, for example, information as to whether the functions described in the first or second embodiment are supported.
  • the base station 10 transmits setting information to the terminal 20.
  • This configuration information is, for example, information for configuring cross-carrier scheduling from SCell to PCell/PSCell between CCs with different frame boundaries/slot boundaries.
  • this configuration information or other configuration information may be used to notify, for each CC, an offset indicating a gap between frame boundaries between CCs, an offset indicating a gap between slot boundaries between CCs, and the like.
  • the configuration information includes limit information as described later, that is, the number of PDCCH blind detection (BD) candidates (maximum number of BD candidates)/CCE limit number (maximum number of CCEs). good too.
  • CCE is an abbreviation for channel control element
  • PDCCH (DCI) is transmitted by one or more CCEs.
  • a CCE may be called a unit resource of PDCCH.
  • the restriction information may be defined in the specifications and not set by the base station 10 .
  • the limit information is not limited to the number of BD candidates and the number of CCE limits.
  • the terminal 20 monitors PDCCH in SCell and PCell/PSCell.
  • monitoring is carried out within the range of the limit information.
  • the terminal 20 If the PDCCH (DCI) addressed to the terminal 20 is received as a result of monitoring in S103, the terminal 20 performs data transmission/data reception according to the DCI in S104.
  • DCI PDCCH
  • both the “frame” and the “slot” are examples of unit intervals in the time domain.
  • the technology described below can also be applied to unit sections in the time domain other than "frames" and "slots.”
  • Example 1 Example 1 will be described below.
  • the number of BD candidates of PDCCH that terminal 20 can monitor in PCell/PSCell slots/SCell slots /CCE limit number is defined/set.
  • the specification specifies the number of BD candidates/CCE limit number of PDCCHs that the terminal 20 can monitor in the PCell/PSCell slot/SCell slot, and the terminal 20 and the base station 10 may operate according to the specification.
  • the above PDCCH BD candidate number/CCE limit number may be defined for each SCS (or numerology ⁇ ) used by the terminal 20 .
  • the number of BD candidates/the number of CCE limits may be only the number of BD candidates, only the number of CCE limits, or both the number of BD candidates and the number of CCE limits.
  • the number of BD candidates/CCE limit number of PDCCH that can be monitored by the terminal 20 in the PCell/PSCell slot/SCell slot is notified from the base station 10 to the terminal 20 by RRC, MAC CE, or DCI, and the terminal 20 You may operate according to the notification.
  • Example 1 options 1 to 3 will be explained. An outline of each is as follows.
  • Option 1 The number of PDCCH BD candidates/CCE limit number that can be monitored by the terminal 20 is defined/set for the combination of the corresponding PCell/PSCell slot and SCell slot specified by the slot offset.
  • Option 2 The number of PDCCH BD candidates/CCE limit number that can be monitored by terminal 20 is defined/set for combinations of PCell/PSCell slots and SCell slots whose time positions overlap.
  • Option 3 For combinations of PCell/PSCell slots and SCell slots that include PCell/PSCell slots and SCell slots that overlap in time position and do not straddle frame boundaries, the terminal 20 The number of monitorable PDCCH BD candidates/CCE limit number is defined/set.
  • Option 1 the number of PDCCH BD candidates/CCE limit number that can be monitored by the terminal 20 is defined/set for the combination of the corresponding PCell/PSCell slot and SCell slot specified by the slot offset.
  • Example 1 of option 1 is shown in FIG.
  • Example 1 the number of BDs/CCE limit number that can be monitored by the terminal 20 is defined/set for the combination of PCell slot #0 and corresponding SCell slots #0 and #1.
  • the BD candidate number/CCE limit number for example, a certain value that is commonly counted for PCell slot #0 and SCell slots #0 and #1 is defined/set.
  • Example 1 for example, if the number of BD candidates is specified/configured as 44, the terminal 20 monitors PDCCHs of up to 44 candidates in PCell slot #0 and SCell slots #0 and #1. .
  • Example 2 of option 1 is shown in FIG. Example 2 differs from Example 1 in the slot offset.
  • the terminal operation is the same as in Example 1.
  • the terminal 20 buffers the PDCCH signal received in the slot in which the PDCCH is received earlier in the combination of the corresponding PCell/PSCell slot and the SCell slot, and receives the PDCCH later.
  • the signal received in the PCell/PSCell slot and the signal received in the SCell slot may be (attempted to) be decoded.
  • Such processing may be applied to all options with time differences in slots in a combination of PCell/PSCell slots and SCell slots.
  • Option 2 >
  • the number of PDCCH BD candidates/CCE limit number that can be monitored by terminal 20 is defined/set for a combination of PCell/PSCell slots and SCell slots whose time positions overlap.
  • Example 1 of option 2 is shown in FIG.
  • the start position (frame boundary) of slot #0 of PCell and the start position (frame boundary) of slot #0 of SCell are shifted by the slot offset. Since the terminal 20 receives the slot offset from the base station 10, the terminal 20 can recognize that the time after the slot offset from the SCell frame boundary is the PCell frame boundary.
  • Example 1 the number of BDs/CCE limit number that can be monitored by the terminal 20 is defined/set for the combination of PCell slot #0 and SCell slots #4 and #5 whose time positions overlap with this. be done.
  • Example 1 for example, if the number of BD candidates is defined/configured as 44, the terminal 20 monitors up to 44 candidate PDCCHs in PCell slot #0 and SCell slots #4 and #5. .
  • Example 2 of option 2 is shown in FIG. Example 2 differs from Example 1 in the slot offset.
  • the terminal operation is the same as in Example 1.
  • terminal 20 schedules PDSCH/PUSCH in PCell/PSCell with this PCell/PSCell slot as a reference point by PDCCH (DCI) received in SCell slot whose time position overlaps with PCell/PSCell slot.
  • DCI PDCCH
  • terminal 20 receives a DCI indicating that data is to be received at a position with an offset of "3 slots" in SCell slot #4 whose time position overlaps with PCell/PSCell slot #0, terminal 20 , and PCell/PSCell slot #0, and data is received in slot #3 after three slots.
  • Option 3 > In Option 3 of Embodiment 1, combinations of corresponding PCell/PSCell slots and SCell slots that include PCell/PSCell slots and SCell slots that overlap in time position and that do not have multiple slots straddling frame boundaries. , the number of PDCCH BD candidates/CCE limit number that can be monitored by the terminal 20 is defined/set.
  • Example 1 of option 3 is shown in FIG.
  • Example 1 of Option 3 operates in the same manner as Example 1 of Option 2 (FIG. 9).
  • Example 2 of option 3 is shown in FIG.
  • the corresponding combination of PCell slots and SCell slots is PCell slot #0 and SCell slots #2 and #3.
  • Example 2 the number of BDs/CCE limit number that can be monitored by the terminal 20 is defined/set for the combination of the PCell slot #0 and the corresponding SCell slots #2 and #3.
  • Example 2 for example, if the number of BD candidates is defined/configured as 44, the terminal 20 monitors up to 44 candidate PDCCHs in PCell slot #0 and SCell slots #2 and #3. .
  • the terminal 20 buffers the PDCCH signal received in the slot in which the PDCCH is received earlier in the combination of the corresponding PCell/PSCell slot and the SCell slot, and delays the PDCCH in time.
  • the signal received in the PCell/PSCell slot and the signal received in the SCell slot may be (attempted to) be decoded.
  • Example 3 of option 3 is shown in FIG.
  • Example 3 differs from Example 2 in the combination of slots. That is, in Example 2, the PCell slot is combined with the SCell slot that is early in time, whereas in Example 3, the SCell slot that is late in time is combined with the PCell slot. The operation is similar to that of Example 2.
  • the terminal can appropriately perform PDCCH monitoring related to cross-carrier scheduling without excessive load.
  • Example 2 When cross-carrier scheduling from SCell to Pcell/PSCell between CCs with different slot boundaries is configured in terminal 20, the number of BD candidates of PDCCH that terminal 20 can monitor in PCell/PSCell slots/SCell slots /CCE limit number is defined/set.
  • the specification specifies the number of BD candidates/CCE limit number of PDCCHs that the terminal 20 can monitor in the PCell/PSCell slot/SCell slot, and the terminal 20 and the base station 10 may operate according to the specification.
  • the above PDCCH BD candidate number/CCE limit number may be defined for each SCS (or numerology ⁇ ) used by the terminal 20 .
  • the number of BD candidates/the number of CCE limits may be only the number of BD candidates, only the number of CCE limits, or both the number of BD candidates and the number of CCE limits.
  • the number of BD candidates/CCE limit number of PDCCH that can be monitored by the terminal 20 in the PCell/PSCell slot/SCell slot is notified from the base station 10 to the terminal 20 by RRC, MAC CE, or DCI, and the terminal 20 You may operate according to the notification.
  • Example 2 options 1 to 3 will be explained. An outline of each is as follows.
  • Option 1 The number of PDCCH BD candidates/CCE limit number that can be monitored by terminal 20 is defined/set for a combination of corresponding PCell/PSCell slots and SCell slots specified by offsets between slot boundaries.
  • Option 2 The number of PDCCH BD candidates/CCE limit number that can be monitored by the terminal 20 is defined/set for portions where the time positions overlap (eg OFDM symbols where the time positions overlap).
  • Option 3 The number of PDCCH BD candidates that can be monitored by terminal 20 for each combination of PCell/PSCell slots and SCell slots where the time positions overlap (for each combination if there are multiple combinations) /CCE limit number is defined/set.
  • Option 3 includes Option 3-1 and Option 3-2 below.
  • Option 3-1 The terminal 20 may perform monitoring so that the number of PDCCH BD candidates that can be monitored by the terminal 20/the number of CCE limits is satisfied for all of the above multiple combinations.
  • Option 3-2 With respect to the above multiple combinations, for any combination (which combination may be specified/notified), terminal 20 can monitor PDCCH BD candidate number/CCE limit number Additionally, the terminal 20 may monitor.
  • Option 1 In Option 1 of Embodiment 1, the number of PDCCH BD candidates/CCE limit number that can be monitored by the terminal 20 is defined/ set.
  • option 1 An example of option 1 is shown in FIG.
  • the start position (slot boundary) of slot #0 of PCell and the start position (slot boundary) of slot #0 of SCell are shifted by an offset amount.
  • the terminal 20 can recognize that the PCell slot boundary is after the offset time from the SCell slot boundary.
  • the number of BDs/CCE limit number that can be monitored by the terminal 20 is defined/set for the combination of PCell slot #0 and corresponding SCell slots #0 and #1. .
  • the terminal 20 monitors PDCCHs of up to 44 candidates in PCell slot #0 and SCell slots #0 and #1. .
  • the terminal 20 buffers the PDCCH signal received in the slot in which the PDCCH is received earlier in the combination of the corresponding PCell/PSCell slot and the SCell slot, and receives the PDCCH later.
  • the signal received in the PCell/PSCell slot and the signal received in the SCell slot may be (attempted to) be decoded.
  • the number of PDCCH BD candidates/CCE limit number that can be monitored by the terminal 20 is defined/set for portions where the time positions overlap (eg OFDM symbols where the time positions overlap). be.
  • option 2 An example of option 2 is shown in FIG.
  • the start position (slot boundary) of slot #0 of PCell and the start position (slot boundary) of slot #0 of SCell are shifted by an offset amount.
  • the terminal 20 can recognize that the PCell slot boundary is after the offset time from the SCell slot boundary.
  • the portion of the SCell slot whose time position overlaps with the PCell slot #0 is the portion within the SCell slots #0 to #2, as shown.
  • the entire PCell slot #0 and the SCell slots #0 to #2 are referred to as "a portion where the time positions overlap", but this is an example.
  • a portion in one or more slots of the PCell and the entirety of one or more slots of the SCell may be "a portion where the time positions overlap”.
  • the small part is defined as "the time position is may be excluded from the "overlapping portion”.
  • the number of BDs/CCE limit number that can be monitored by the terminal 20 is defined/set for the "part where the time positions overlap" between the PCell slot and the SCell slot.
  • the terminal 20 monitors up to 44 candidate PDCCHs in the "part where the time positions overlap".
  • the information of the DCI Data can be received in a slot in the PCell according to .
  • the terminal 20 uses the PDCCH (DCI) received in (the whole or part of) the SCell slot whose time position overlaps with the PCell/PSCell slot, PDSCH/PDSCH in PCell/PSCell based on this PCell/PSCell slot It may be assumed that PUSCH scheduling is done. For example, when the terminal 20 receives a DCI indicating that data is to be received at a position with an offset of "3 slots" in the portion of the SCell slot #0 where the time position overlaps with the PCell/PSCell slot #0, the terminal 20 may receive data in a slot three slots after PCell/PSCell slot #0.
  • DCI PDCCH
  • Option 3 >
  • the terminal 20 can monitor each combination of PCell/PSCell slots and SCell slots that have overlapping time positions (if there are multiple combinations, each combination). number of PDCCH BD candidates/number of CCE limits may be specified/set.
  • Option 3 includes Option 3-1 and Option 3-2 below.
  • Option 3-1 The terminal 20 may perform monitoring so that the number of PDCCH BD candidates that can be monitored by the terminal 20/the number of CCE limits is satisfied for all of the above multiple combinations.
  • Option 3-2 With respect to the above multiple combinations, for any combination (which combination may be specified/notified), terminal 20 can monitor PDCCH BD candidate number/CCE limit number Additionally, the terminal 20 may monitor.
  • option 3 An example of option 3 is shown in FIG.
  • the start position (slot boundary) of slot #0 of PCell and the start position (slot boundary) of slot #0 of SCell are shifted by an offset amount.
  • the terminal 20 can recognize that the PCell slot boundary is after the offset time from the SCell slot boundary.
  • the number of BDs/CCE limit number that can be monitored by the terminal 20 is specified/set for the "combination of PCell slot #0 and SCell slots #0 and #1", and "PCell slot # The number of BDs/CCE limit number that can be monitored by the terminal 20 is defined/set for "combination of slots #1 and #2 of 0 and SCell”.
  • the terminal 20 can monitor (“combination of PCell slot #0 and SCell slots #0 and #1” and “combination of PCell slot #0 and SCell slots #1 and #2”).
  • BD number/CCE limit number may be defined/set.
  • Option 3-1 above corresponds to "and" in FIG.
  • the terminal For example, for (“a combination of PCell slot #0 and SCell slots #0 and #1” and “a combination of PCell slot #0 and SCell slots #1 and #2”), the terminal The number of BDs/CCE limit that can be monitored is defined/set. Then, the terminal 20 monitors "a combination of PCell slot #0 and SCell slots #0 and #1” and "a combination of PCell slot #0 and SCell slots #1 and #2” (that is, PCell (monitoring of slot #0 and slots #0 to #2 of SCell), monitoring is performed within the range of the number of BDs/CCE limit number specified/set above.
  • Option 3-2 above corresponds to "or" in FIG.
  • the number of BDs/CCE limit number that can be monitored by the terminal 20 is defined/set for "combination of slot #0 of PCell and slots #0 and #1 of SCell".
  • the number of BDs/CCE limit number that can be monitored by the terminal 20 is defined/set for "combination of slot #0 and slots #1 and #2 of SCell”.
  • the terminal 20 monitors in the "combination of PCell slot #0 and SCell slots #0 and #1" within the range of the number of BDs/CCE limit number specified/set above.
  • the terminal 20 monitors in the "combination of PCell slot #0 and SCell slots #1 and #2" within the range of the number of BDs/CCE limit number specified/set above.
  • terminals can appropriately perform PDCCH monitoring related to cross-carrier scheduling without excessive load.
  • Example common to Examples 1 and 2 For example, when the frame boundary between CCs is shifted and the slot boundary is also shifted, the first embodiment and the second embodiment may be combined.
  • one of the options in Example 1 may be applied to frame boundary differences, and one of the options in Example 2 may be applied to slot boundary differences.
  • the reference point of the scheduling offset when performing cross-carrier scheduling may be specified/set.
  • the reference point may be the first slot (or last slot) of the PCell in a combination of PCell/PSCell slots and SCell slots.
  • any of the following (1) to (2) may be (1) and (2) will be described with reference to FIG.
  • the number of BD candidates/CCE limit number that can be monitored by the terminal 20 for each PCell/PSCell slot and the terminal 20 for each SCell slot are monitored.
  • the possible BD number/CCE limit numbers are defined respectively.
  • the number of BD candidates/CCE limit per slot of PCell is set to 22, and the number of BD candidates/CCE limit per slot of SCell (for example, downlink) is set to 22. It is defined.
  • the number of BD candidates/CCE limit number per PCell slot is defined as 22, and BD The number of candidates/CCE limit number is defined as 22.
  • the number of BD candidates/CCE limit number that can be monitored by the terminal 20, which are counted in common for PCell and SCell, are specified/ set.
  • the number of BD candidates/number of CCEs is defined/set to be 44, and the terminal 20 has a total of 44 BD candidates/CCE in the illustrated time range. Monitoring is performed assuming the limit number.
  • the examples described in the first and second embodiments assume such a method.
  • the number of BD candidates/CCE limit specified/set for one cell (eg PCell) is also applied to the other cell (eg SCell). good too.
  • Example 1 multiple options may be combined.
  • the terminal 20 may monitor so that the number of PDCCH BD candidates that the terminal 20 can monitor/the number of CCE limits are all satisfied.
  • the NW may notify which option to implement.
  • the base station 10 may select which option to use according to the contents of the UE capability or the UE report and set it in the terminal 20 .
  • UE capabilities related to the present embodiment may be specified, and terminal 20 may notify base station 10 thereof.
  • Examples of UE capabilities include the following (1) to (4).
  • UE capabilities may be defined for each of the first and second embodiments, or a common UE capability may be defined.
  • the base station 10 configures cross-carrier scheduling for the terminal 20, for example, only between CCs whose slot boundary deviation is smaller than a threshold.
  • Example 2 UE capability may be defined for each option in the example, or UE capability common to options may be defined.
  • the UE capability may be specified for the value of the amount of difference between frame boundaries between CCs or the amount of difference between slot boundaries between CCs.
  • the base station 10 when the terminal 20 reports to the base station 10 UE capability indicating that up to X frame boundary differences between CCs can be tolerated, the base station 10, for example, Cross-carrier scheduling is set for terminal 20 only between CCs with a frame boundary shift smaller than X.
  • (4) UE capabilities may be defined for each SCS, each FR, each band, each size of SCS between PCell/PSCell and SCell, each band combination, and the like.
  • FIG. 18 is a diagram showing an example of the functional configuration of the base station 10. As shown in FIG. As shown in FIG. 18 , base station 10 has transmitter 110 , receiver 120 , setter 130 , and controller 140 . The functional configuration shown in FIG. 18 is merely an example. As long as the operation according to the embodiment of the present invention can be executed, the functional division and the names of the functional units may be arbitrary. Also, the transmitting unit 110 and the receiving unit 120 may be collectively referred to as a communication unit.
  • the transmission unit 110 includes a function of generating a signal to be transmitted to the terminal 20 side and wirelessly transmitting the signal.
  • the receiving unit 120 includes a function of receiving various signals transmitted from the terminal 20 and acquiring, for example, higher layer information from the received signals. Further, the transmission section 110 has a function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL/UL control signals, DCI by PDCCH, data by PDSCH, and the like to the terminal 20 .
  • the setting unit 130 stores preset setting information and various types of setting information to be transmitted to the terminal 20 in a storage device included in the setting unit 130, and reads them from the storage device as necessary.
  • the control unit 140 schedules DL reception or UL transmission of the terminal 20 via the transmission unit 110 . Also, the control unit 140 includes a function of performing LBT. A functional unit related to signal transmission in control unit 140 may be included in transmitting unit 110 , and a functional unit related to signal reception in control unit 140 may be included in receiving unit 120 . Also, the transmitter 110 may be called a transmitter, and the receiver 120 may be called a receiver.
  • FIG. 19 is a diagram showing an example of the functional configuration of the terminal 20.
  • the terminal 20 has a transmitting section 210, a receiving section 220, a setting section 230, and a control section 240.
  • the functional configuration shown in FIG. 19 is merely an example. As long as the operation according to the embodiment of the present invention can be executed, the functional division and the names of the functional units may be arbitrary.
  • the transmitting unit 210 and the receiving unit 220 may be collectively referred to as a communication unit.
  • the transmission unit 210 creates a transmission signal from the transmission data and wirelessly transmits the transmission signal.
  • the receiving unit 220 wirelessly receives various signals and acquires a higher layer signal from the received physical layer signal.
  • the receiving unit 220 also has a function of receiving NR-PSS, NR-SSS, NR-PBCH, DL/UL/SL control signals, DCI by PDCCH, data by PDSCH, and the like transmitted from the base station 10 .
  • the transmission unit 210 transmits PSCCH (Physical Sidelink Control Channel), PSSCH (Physical Sidelink Shared Channel), PSDCH (Physical Sidelink Discovery Channel), PSBCH (Physical Sidelink Broadcast Channel) etc.
  • PSCCH Physical Sidelink Control Channel
  • PSSCH Physical Sidelink Shared Channel
  • PSDCH Physical Sidelink Discovery Channel
  • PSBCH Physical Sidelink Broadcast Channel
  • the receiving unit 120 may receive PSCCH, PSSCH, PSDCH, PSBCH, or the like from another terminal 20 .
  • the setting unit 230 stores various types of setting information received from the base station 10 or other terminals by the receiving unit 220 in the storage device provided in the setting unit 230, and reads them from the storage device as necessary.
  • the setting unit 230 also stores preset setting information.
  • the control unit 240 controls the terminal 20.
  • a functional unit related to signal transmission in control unit 240 may be included in transmitting unit 210
  • a functional unit related to signal reception in control unit 240 may be included in receiving unit 220 .
  • the transmitter 210 may be called a transmitter
  • the receiver 220 may be called a receiver.
  • the present embodiment provides at least a terminal, a base station, and a monitoring method described in items 1 to 6 below.
  • (Section 1) a receiving unit that receives from a base station an offset indicating a shift of a frame boundary or a slot boundary between the first cell and the second cell;
  • a terminal comprising: a control unit that monitors a downlink control channel within a range of restrictions on combinations of corresponding slots of the first cell and slots of the second cell specified by the offset.
  • (Section 2) a control unit that monitors a downlink control channel within the limits of a portion where the time positions of the first cell and the second cell that have a shift in the frame boundary or the slot boundary overlap; and a receiving unit that receives control information through the downlink control channel.
  • (Section 5) a transmitting unit that transmits to the terminal an offset that indicates the shift of the frame boundary or slot boundary between the first cell and the second cell; A control unit that performs scheduling in the first cell by the downlink control channel in the second cell, A base station in which a downlink control channel is monitored in the terminal within a range of restrictions on combinations of corresponding slots of the first cell and slots of the second cell specified by the offset. (Section 6) receiving from the base station an offset indicative of a displacement of frame or slot boundaries between the first cell and the second cell; A monitoring method performed by a terminal, which monitors a downlink control channel within a range of limits for combinations of corresponding slots of the first cell and slots of the second cell specified by the offset.
  • any of the first to sixth terms provides a technique for the terminal to appropriately perform PDCCH monitoring related to cross-carrier scheduling even in cases where frame boundaries or slot boundaries are different between CCs.
  • the maximum number of downlink control channel candidates, the maximum number of downlink control channel unit resources, and the like can be used as restrictions.
  • each functional block may be implemented using one device that is physically or logically coupled, or directly or indirectly using two or more devices that are physically or logically separated (e.g. , wired, wireless, etc.) and may be implemented using these multiple devices.
  • a functional block may be implemented by combining software in the one device or the plurality of devices.
  • Functions include judging, determining, determining, calculating, calculating, processing, deriving, investigating, searching, checking, receiving, transmitting, outputting, accessing, resolving, selecting, choosing, establishing, comparing, assuming, expecting, assuming, Broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc. can't
  • a functional block (component) that performs transmission is called a transmitting unit or transmitter.
  • the implementation method is not particularly limited.
  • the base station 10, the terminal 20, etc. may function as a computer that performs processing of the wireless communication method of the present disclosure.
  • FIG. 20 is a diagram illustrating an example of a hardware configuration of base station 10 and terminal 20 according to an embodiment of the present disclosure.
  • the base station 10 and terminal 20 described above are physically configured as a computer device including a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like. good too.
  • the term "apparatus” can be read as a circuit, device, unit, or the like.
  • the hardware configuration of the base station 10 and terminal 20 may be configured to include one or more of each device shown in the figure, or may be configured without some devices.
  • Each function of the base station 10 and the terminal 20 is performed by the processor 1001 performing calculations and controlling communication by the communication device 1004 by loading predetermined software (programs) onto hardware such as the processor 1001 and the storage device 1002. or by controlling at least one of data reading and writing in the storage device 1002 and the auxiliary storage device 1003 .
  • the processor 1001 for example, operates an operating system and controls the entire computer.
  • the processor 1001 may be configured with a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, registers, and the like.
  • CPU central processing unit
  • the control unit 140 , the control unit 240 and the like described above may be implemented by the processor 1001 .
  • the processor 1001 reads programs (program codes), software modules, data, etc. from at least one of the auxiliary storage device 1003 and the communication device 1004 to the storage device 1002, and executes various processes according to them.
  • programs program codes
  • software modules software modules
  • data etc.
  • the program a program that causes a computer to execute at least part of the operations described in the above embodiments is used.
  • control unit 140 of base station 10 shown in FIG. 18 may be implemented by a control program stored in storage device 1002 and operated by processor 1001 .
  • FIG. Processor 1001 may be implemented by one or more chips.
  • the program may be transmitted from a network via an electric communication line.
  • the storage device 1002 is a computer-readable recording medium, for example, ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), etc. may be configured.
  • the storage device 1002 may also be called a register, cache, main memory (main storage device), or the like.
  • the storage device 1002 can store executable programs (program code), software modules, etc. for implementing a communication method according to an embodiment of the present disclosure.
  • the auxiliary storage device 1003 is a computer-readable recording medium, for example, an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (for example, a compact disk, a digital versatile disk, a Blu -ray disk), smart card, flash memory (eg, card, stick, key drive), floppy disk, magnetic strip, and/or the like.
  • the storage medium described above may be, for example, a database, server, or other suitable medium including at least one of storage device 1002 and secondary storage device 1003 .
  • the communication device 1004 is hardware (transmitting/receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also called a network device, a network controller, a network card, a communication module, or the like.
  • the communication device 1004 includes a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc., in order to realize at least one of, for example, frequency division duplex (FDD) and time division duplex (TDD).
  • FDD frequency division duplex
  • TDD time division duplex
  • the transceiver may be physically or logically separate implementations for the transmitter and receiver.
  • the input device 1005 is an input device (for example, keyboard, mouse, microphone, switch, button, sensor, etc.) that receives input from the outside.
  • the output device 1006 is an output device (for example, display, speaker, LED lamp, etc.) that outputs to the outside. Note that the input device 1005 and the output device 1006 may be integrated (for example, a touch panel).
  • Each device such as the processor 1001 and the storage device 1002 is connected by a bus 1007 for communicating information.
  • the bus 1007 may be configured using a single bus, or may be configured using different buses between devices.
  • the base station 10 and the terminal 20 include hardware such as microprocessors, digital signal processors (DSPs), ASICs (Application Specific Integrated Circuits), PLDs (Programmable Logic Devices), and FPGAs (Field Programmable Gate Arrays). , and part or all of each functional block may be implemented by the hardware.
  • processor 1001 may be implemented using at least one of these pieces of hardware.
  • FIG. 21 shows a configuration example of a vehicle 2001.
  • a vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, front wheels 2007, rear wheels 2008, an axle 2009, an electronic control unit 2010, and various sensors 2021-2029. , 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 vehicle 2001, and may be applied to communication module 2013, for example.
  • the functions of terminal 20 may be installed in communication module 2013 .
  • the driving unit 2002 is configured by, for example, an engine, a motor, or a hybrid of the engine and the motor.
  • the steering unit 2003 includes at least a steering wheel (also referred to as steering wheel), and is configured to steer at least one of the front wheels and the rear wheels based on the operation of the steering wheel operated by the user.
  • the electronic control unit 2010 is composed of a microprocessor 2031 , a memory (ROM, RAM) 2032 and a communication port (IO port) 2033 . Signals from various sensors 2021 to 2029 provided in the vehicle 2001 are input to the electronic control unit 2010 .
  • the electronic control unit 2010 may also be called an ECU (Electronic Control Unit).
  • the signals from the various sensors 2021 to 2029 include the current signal from the current sensor 2021 that senses the current of the motor, the rotation speed signal of the front and rear wheels acquired by the rotation speed sensor 2022, and the front wheel acquired by the air pressure sensor 2023. and rear wheel air pressure signal, vehicle speed signal obtained by vehicle speed sensor 2024, acceleration signal obtained by acceleration sensor 2025, accelerator pedal depression amount signal obtained by accelerator pedal sensor 2029, brake pedal sensor 2026 obtained by There are a brake pedal depression amount signal, a shift lever operation signal acquired by the shift lever sensor 2027, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. acquired by the object detection sensor 2028, and the like.
  • the information service unit 2012 includes various devices such as car navigation systems, audio systems, speakers, televisions, and radios for providing various types of information such as driving information, traffic information, and entertainment information, and one or more devices for controlling these devices. ECU.
  • the information service unit 2012 uses information acquired from an external device via the communication module 2013 or the like to provide passengers of the vehicle 2001 with various multimedia information and multimedia services.
  • Driving support system unit 2030 includes millimeter wave radar, LiDAR (Light Detection and Ranging), camera, positioning locator (e.g., GNSS, etc.), map information (e.g., high-definition (HD) map, automatic driving vehicle (AV) map, etc. ), gyro systems (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence) chips, AI processors, etc., to prevent accidents and reduce the driver's driving load. and one or more ECUs for controlling these devices.
  • the driving support system unit 2030 transmits and receives various information via the communication module 2013, and realizes a driving support function or an automatic driving function.
  • the communication module 2013 can communicate with the microprocessor 2031 and components of the vehicle 2001 via communication ports.
  • the communication module 2013 communicates with the vehicle 2001 through the communication port 2033, the drive unit 2002, the steering unit 2003, the accelerator pedal 2004, the brake pedal 2005, the shift lever 2006, the front wheels 2007, the rear wheels 2008, the axle 2009, the electronic Data is transmitted and received between the microprocessor 2031 and memory (ROM, RAM) 2032 in the control unit 2010 and the sensors 2021-29.
  • 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 an external device via wireless communication.
  • Communication module 2013 may be internal or external to electronic control unit 2010 .
  • the external device may be, for example, a base station, a mobile station, or the like.
  • the communication module 2013 transmits the current signal from the current sensor input to the electronic control unit 2010 to an external device via wireless communication.
  • the communication module 2013 receives the rotation speed signal of the front and rear wheels obtained by the rotation speed sensor 2022, the air pressure signal of the front and rear wheels obtained by the air pressure sensor 2023, and the 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, and a shift lever.
  • a shift lever operation signal obtained by the sensor 2027 and a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by the object detection sensor 2028 are also transmitted to an external device via wireless communication.
  • the communication module 2013 receives various information (traffic information, signal information, inter-vehicle information, etc.) transmitted from external devices, and displays it on the information service unit 2012 provided in the vehicle 2001 .
  • Communication module 2013 also stores various information received from external devices in memory 2032 available to microprocessor 2031 .
  • the microprocessor 2031 controls the drive unit 2002, the steering unit 2003, the accelerator pedal 2004, the brake pedal 2005, the shift lever 2006, the front wheels 2007, the rear wheels 2008, and the axle 2009 provided in the vehicle 2001.
  • sensors 2021 to 2029 and the like may be controlled.
  • the operations of a plurality of functional units may be physically performed by one component, or the operations of one functional unit may be physically performed by a plurality of components.
  • the processing order may be changed as long as there is no contradiction.
  • the base station 10 and the terminal 20 have been described using functional block diagrams for convenience of explanation of processing, such devices may be implemented in hardware, software, or a combination thereof.
  • the software operated by the processor of the base station 10 according to the embodiment of the present invention and the software operated by the processor of the terminal 20 according to the embodiment of the present invention are stored in random access memory (RAM), flash memory, read-only memory, respectively. (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server, or any other appropriate storage medium.
  • notification of information is not limited to the aspects/embodiments described in the present disclosure, and may be performed using other methods.
  • notification of information includes physical layer signaling (e.g., DCI (Downlink Control Information), UCI (Uplink Control Information)), higher layer signaling (e.g., RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, It may be implemented by broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals, or a combination thereof.
  • RRC signaling may also be called an RRC message, for example, RRC It may be a connection setup (RRC Connection Setup) message, an RRC connection reconfiguration message, or the like.
  • Each aspect/embodiment described in the present disclosure includes LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system) system), FRA (Future Radio Access), NR (new Radio), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark) )), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth (registered trademark), and other suitable systems and extended It may be applied to at least one of the next generation systems. Also, a plurality of systems may be applied in combination (for example, a combination of at least one of LTE and LTE-A and 5G, etc.).
  • a specific operation performed by the base station 10 in this specification may be performed by its upper node in some cases.
  • various operations performed for communication with terminal 20 may be performed by base station 10 and other network nodes other than base station 10 (eg, but not limited to MME or S-GW).
  • base station 10 e.g, but not limited to MME or S-GW
  • the other network node may be a combination of a plurality of other network nodes (for example, MME and S-GW).
  • Information, signals, etc. described in the present disclosure may be output from a higher layer (or a lower layer) to a lower layer (or a higher layer). It may be input and output via multiple network nodes.
  • Input/output information may be stored in a specific location (for example, memory) or managed using a management table. Input/output information and the like can be overwritten, updated, or appended. The output information and the like may be deleted. The entered information and the like may be transmitted to another device.
  • the determination in the present disclosure may be performed by a value represented by 1 bit (0 or 1), may be performed by a boolean value (Boolean: true or false), or may be performed by comparing numerical values (e.g. , comparison with a predetermined value).
  • Software whether referred to as software, firmware, middleware, microcode, hardware description language or otherwise, includes instructions, instruction sets, code, code segments, program code, programs, subprograms, and software modules. , applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, and the like.
  • software, instructions, information, etc. may be transmitted and received via a transmission medium.
  • the software uses at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and wireless technology (infrared, microwave, etc.) to website, Wired and/or wireless technologies are included within the definition of transmission medium when sent from a server or other remote source.
  • wired technology coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.
  • wireless technology infrared, microwave, etc.
  • data, instructions, commands, information, signals, bits, symbols, chips, etc. may refer to voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. may be represented by a combination of
  • the channel and/or symbols may be signaling.
  • a signal may also be a message.
  • a component carrier may also be called a carrier frequency, a cell, a frequency carrier, or the like.
  • system and “network” used in this disclosure are used interchangeably.
  • 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.
  • radio resources may be indexed.
  • base station BS
  • radio base station base station
  • base station fixed station
  • NodeB nodeB
  • eNodeB eNodeB
  • gNodeB gNodeB
  • a base station can accommodate one or more (eg, three) cells.
  • the overall coverage area of the base station can be partitioned into multiple smaller areas, each smaller area being associated with a base station subsystem (e.g., an indoor small base station (RRH:
  • RRH indoor small base station
  • the term "cell” or “sector” refers to part or all of the coverage area of at least one of the base stations and base station subsystems serving communication services in this coverage.
  • MS mobile station
  • UE user equipment
  • terminal terminal
  • a mobile station is defined 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 It may also be called a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.
  • At least one of the base station and mobile station may be called a transmitting device, a receiving device, a communication device, or the like.
  • At least one of the base station and the mobile station may be a device mounted on a mobile object, the mobile object itself, or the like.
  • the mobile object may be a vehicle (e.g., car, airplane, etc.), an unmanned mobile object (e.g., drone, self-driving car, etc.), or a robot (manned or unmanned ).
  • at least one of the base station and the mobile station includes devices that do not necessarily move during communication operations.
  • at least one of the base station and mobile station may be an IoT (Internet of Things) device such as a sensor.
  • IoT Internet of Things
  • the base station in the present disclosure may be read as a terminal.
  • a configuration in which communication between a base station and a terminal is replaced with communication between a plurality of terminals 20 for example, D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.
  • the terminal 20 may have the functions of the base station 10 described above.
  • words such as "up” and “down” may be replaced with words corresponding to inter-terminal communication (for example, "side”).
  • uplink channels, downlink channels, etc. may be read as side channels.
  • a terminal in the present disclosure may be read as a base station.
  • the base station may have the functions that the terminal has.
  • determining and “determining” used in this disclosure may encompass a wide variety of actions.
  • “Judgement” and “determination” are, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiring (eg, lookup in a table, database, or other data structure), ascertaining as “judged” or “determined”, and the like.
  • "judgment” and “determination” are used for receiving (e.g., receiving information), transmitting (e.g., transmitting information), input, output, access (accessing) (for example, accessing data in memory) may include deeming that a "judgment” or “decision” has been made.
  • judgment and “decision” are considered to be “judgment” and “decision” by resolving, selecting, choosing, establishing, comparing, etc. can contain.
  • judgment and “decision” may include considering that some action is “judgment” and “decision”.
  • judgment (decision) may be read as “assuming”, “expecting”, “considering”, or the like.
  • connection means any direct or indirect connection or coupling between two or more elements, It can include the presence of one or more intermediate elements between two elements being “connected” or “coupled.” Couplings or connections between elements may be physical, logical, or a combination thereof. For example, “connection” may be read as "access”.
  • two elements are defined using at least one of one or more wires, cables, and printed electrical connections and, as some non-limiting and non-exhaustive examples, in the radio frequency domain. , electromagnetic energy having wavelengths in the microwave and optical (both visible and invisible) regions, and the like.
  • the reference signal can also be abbreviated as RS (Reference Signal), and may also be called Pilot depending on the applicable standard.
  • RS Reference Signal
  • any reference to elements using the "first,” “second,” etc. designations used in this disclosure 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, reference to a first and second element does not imply that only two elements can be employed or that the first element must precede the second element in any way.
  • a radio frame may consist of one or more frames in the time domain. Each frame or frames in the time domain may be referred to as a subframe. A subframe may also consist of one or more slots in the time domain. A subframe may be of a fixed length of time (eg, 1 ms) independent of numerology.
  • a numerology may be a communication parameter that applies to the transmission and/or reception of a signal or channel. Numerology, for example, subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame configuration, transceiver It may indicate at least one of certain filtering operations performed in the frequency domain, certain windowing operations performed by the transceiver in the time domain, and/or the like.
  • SCS subcarrier spacing
  • TTI transmission time interval
  • transceiver It may indicate at least one of certain filtering operations performed in the frequency domain, certain windowing operations performed by the transceiver in the time domain, and/or the like.
  • a slot may consist of one or more symbols (OFDM (Orthogonal Frequency Division Multiplexing) symbol, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbol, etc.) in the time domain.
  • a slot may be a unit of time based on numerology.
  • a slot may contain multiple mini-slots. Each minislot may consist of one or more symbols in the time domain. A minislot may also be referred to as a subslot. A minislot may consist of fewer symbols than a slot.
  • PDSCH (or PUSCH) transmitted in time units larger than minislots may be referred to as PDSCH (or PUSCH) mapping type A.
  • PDSCH (or PUSCH) transmitted using minislots may be referred to as PDSCH (or PUSCH) mapping type B.
  • Radio frames, subframes, slots, minislots and symbols all represent time units when transmitting signals. Radio frames, subframes, slots, minislots and symbols may be referred to by other corresponding designations.
  • one subframe may be called a Transmission Time Interval (TTI)
  • TTI Transmission Time Interval
  • TTI Transmission Time Interval
  • one slot or one minislot may be called a TTI.
  • TTI Transmission Time Interval
  • at least one of the subframe and TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (eg, 1-13 symbols), or a period longer than 1 ms may be Note that the unit representing the TTI may be called a slot, mini-slot, or the like instead of a subframe.
  • one slot may be called a unit time. The unit time may differ from cell to cell depending on the neurology.
  • TTI refers to, for example, the minimum scheduling time unit in wireless communication.
  • the base station performs scheduling to allocate radio resources (frequency bandwidth, transmission power, etc. that can be used by each terminal 20) to each terminal 20 on a TTI basis.
  • radio resources frequency bandwidth, transmission power, etc. that can be used by each terminal 20
  • TTI is not limited to this.
  • a TTI may be a transmission time unit such as a channel-encoded data packet (transport block), code block, or codeword, or may be a processing unit such as scheduling and link adaptation. Note that when a TTI is given, the time interval (for example, the number of symbols) in which transport blocks, code blocks, codewords, etc. are actually mapped may be shorter than the TTI.
  • one or more TTIs may be the minimum scheduling time unit. Also, the number of slots (the number of mini-slots) constituting the minimum time unit of the scheduling may be controlled.
  • a TTI having a time length of 1 ms may be called a normal TTI (TTI in LTE Rel. 8-12), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, or the like.
  • a TTI that is shorter than a normal TTI may be called a shortened TTI, a short TTI, a partial or fractional TTI, a shortened subframe, a short subframe, a minislot, a subslot, a slot, and the like.
  • the long TTI (e.g., normal TTI, subframe, etc.) may be replaced with a TTI having a time length exceeding 1 ms
  • the short TTI e.g., shortened TTI, etc.
  • a TTI having the above TTI length may be read instead.
  • a resource block is a resource allocation unit in the time domain and the frequency domain, and may include one or more consecutive subcarriers in the frequency domain.
  • the number of subcarriers included in the RB may be the same regardless of the numerology, and may be 12, for example.
  • the number of subcarriers included in an RB may be determined based on numerology.
  • the time domain of an RB may include one or more symbols and may be 1 slot, 1 minislot, 1 subframe, or 1 TTI long.
  • One TTI, one subframe, etc. may each consist of one or more resource blocks.
  • One or more RBs are physical resource blocks (PRBs), sub-carrier groups (SCGs), resource element groups (REGs), PRB pairs, RB pairs, etc. may be called.
  • PRBs physical resource blocks
  • SCGs sub-carrier groups
  • REGs resource element groups
  • PRB pairs RB pairs, etc. may be called.
  • a resource block may be composed of one or more resource elements (RE: Resource Element).
  • RE Resource Element
  • 1 RE may be a radio resource region of 1 subcarrier and 1 symbol.
  • a bandwidth part (which may also be called a bandwidth part) may represent a subset of contiguous common resource blocks (RBs) for a certain numerology on a certain carrier.
  • the common RB may be identified by an RB index based on the common reference point of the carrier.
  • PRBs may be defined in a BWP and numbered within that BWP.
  • the BWP may include a BWP for UL (UL BWP) and a BWP for DL (DL BWP).
  • UL BWP UL BWP
  • DL BWP DL BWP
  • One or multiple BWPs may be configured for a UE within one carrier.
  • 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.
  • BWP bitmap
  • radio frames, subframes, slots, minislots and symbols described above are only examples.
  • the number of subframes contained in a radio frame the number of slots per subframe or radio frame, the number of minislots contained within a slot, the number of symbols and RBs contained in a slot or minislot, the number of Configurations such as the number of subcarriers, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, etc.
  • CP cyclic prefix
  • a and B are different may mean “A and B are different from each other.”
  • the term may also mean that "A and B are different from C”.
  • Terms such as “separate,” “coupled,” etc. may also be interpreted in the same manner as “different.”
  • notification of predetermined information is not limited to being performed explicitly, but may be performed implicitly (for example, not notifying the predetermined information). good too.

Landscapes

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

Abstract

Terminal comprenant : une unité de réception permettant de recevoir, en provenance d'une station de base, un décalage qui indique le désalignement d'une limite de trame ou d'une limite de créneau entre une première cellule et une seconde cellule ; et une unité de commande permettant de surveiller un canal de commande de liaison descendante dans une plage de limitations sur une combinaison de premiers créneaux de cellule et de seconds créneaux de cellule correspondants, la plage étant désignée par le décalage.
PCT/JP2021/040873 2021-11-05 2021-11-05 Terminal, station de base et procédé de surveillance WO2023079710A1 (fr)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017502612A (ja) * 2014-02-24 2017-01-19 インテル アイピー コーポレイション 未認可搬送波タイプのスケジューリング
US20170118001A1 (en) * 2014-06-12 2017-04-27 Lg Electronics Inc. Method and apparatus for configuring synchronization reference in wireless communication system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017502612A (ja) * 2014-02-24 2017-01-19 インテル アイピー コーポレイション 未認可搬送波タイプのスケジューリング
US20170118001A1 (en) * 2014-06-12 2017-04-27 Lg Electronics Inc. Method and apparatus for configuring synchronization reference in wireless communication system

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