WO2023079660A1 - 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
WO2023079660A1
WO2023079660A1 PCT/JP2021/040679 JP2021040679W WO2023079660A1 WO 2023079660 A1 WO2023079660 A1 WO 2023079660A1 JP 2021040679 W JP2021040679 W JP 2021040679W WO 2023079660 A1 WO2023079660 A1 WO 2023079660A1
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WIPO (PCT)
Prior art keywords
slot
terminal
base station
monitoring
pdcch
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PCT/JP2021/040679
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English (en)
Japanese (ja)
Inventor
真由子 岡野
尚哉 芝池
浩樹 原田
Original Assignee
株式会社Ｎｔｔドコモ
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Priority to PCT/JP2021/040679 priority Critical patent/WO2023079660A1/fr
Publication of WO2023079660A1 publication Critical patent/WO2023079660A1/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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to terminals, base stations, and monitoring methods in wireless communication systems.
  • NR New Radio
  • LTE Long Term Evolution
  • NR defines operations such as monitoring type0-PDCCH in the slot associated with the SSB received by the terminal (Non-Patent Documents 1, 2, etc.).
  • the terminal performs PDCCH monitoring only in a specific time range (slot/symbol) within a plurality of slots (multislots).
  • the present invention has been made in view of the above points, and aims to provide a technique for a terminal to appropriately monitor PDCCH in multi-slot PDCCH monitoring.
  • a receiver that receives a synchronization signal from a base station; a control unit that determines a time position for monitoring the downlink control channel based on the synchronization signal so that the downlink control channel can be monitored within a specific time range in the slot group.
  • terminals can appropriately monitor PDCCHs in multi-slot PDCCH monitoring.
  • 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. 4 is a diagram showing an example of bands
  • FIG. 4 is a diagram showing an example of monitoring limits
  • FIG. 4 is a diagram showing an example of monitoring limits
  • FIG. 10 illustrates an example of UE capabilities for monitoring
  • FIG. 10 illustrates an example of UE capabilities for monitoring
  • It is a figure which shows Table13-11. It is a figure which shows Table13-12.
  • FIG. 4 is a diagram showing an example of monitoring slots corresponding to SSB
  • FIG. 4 is a diagram showing an example of monitoring slots corresponding to SSB
  • FIG. 4 is a diagram showing an example of monitoring slots corresponding to SSB
  • FIG. 4 is a diagram showing an example of monitoring slots corresponding to SSB
  • FIG. 4 is a diagram showing an example of monitoring slots corresponding to SSB
  • FIG. 4 is a diagram showing an example of monitoring slots corresponding to SSB; FIG. 4 is a diagram showing an example of monitoring slots corresponding to SSB; 4 is a diagram showing a basic operation example of the first embodiment; FIG. 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. 10 is a diagram showing a basic operation example of the second embodiment; 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. 11 is a diagram for explaining Example 2; 2 is a diagram showing a configuration example of a base station 10; FIG. 2 is a diagram illustrating a configuration example of a terminal 20; 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.
  • the base station 10 and the terminal 20 also perform operations that are not covered by the existing regulations in order to solve the problem when using a high frequency band.
  • 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 the present embodiment means “A or B, or A and B” unless the meaning is clear from the context.
  • 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.
  • 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. Also, 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 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).
  • MCG Master Cell Group
  • SCG Secondary Cell Group
  • 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.
  • FIG. 3 shows an example of frequency bands used in NR.
  • NR has three frequency bands (also called frequency ranges): FR1 (0.41 GHz to 7.125), FR2-1 (24.25 GHz to 52.6 GHz), and FR2-2 (52.6 GHz to 71 GHz).
  • FR2-1 and FR2-2 may be collectively called FR2.
  • FR1 supports SCS of 15 kHz, 30 kHz, and 60 kHz, and a bandwidth (BW) of 5 to 100 MHz.
  • FR2-1 supports 60 kHz, 120 kHz and 240 kHz (SSB only) as SCS and 50-400 MHz as bandwidth (BW).
  • FR2-2 is assumed to support SCS greater than 240 kHz. However, these support situations are just examples.
  • SCS subcarrier spacing
  • Non-Patent Document 1 due to the limitation of UE processing capacity, the larger the SCS, the more the number of PDCCH candidates to be monitored / the maximum number of "BD/CCE" per slot decreases. .
  • Fig. 4 shows an example of provisions extracted from Non-Patent Document 1.
  • Table 10.1-2 shows the maximum number of monitored PDCCH candidates per slot
  • Table 10.1-3 shows the maximum number of monitored CCEs per slot.
  • the larger the SCS represented by the numerology ⁇ the smaller the number of PDCCH candidates/number of CCEs.
  • the AL aggregation level
  • the types of DCI formats to be monitored are limited.
  • Multi-slot PDCCH monitoring is performed based on slots within a slot group.
  • Each slot group consists of X consecutive slots. Also, a plurality of slot groups are arranged continuously so as not to overlap. The start of the first slot group in a subframe is aligned with the subframe boundary. Also, the start of each slot group is aligned with a slot boundary. Also, there is a common BD budget for all search spaces.
  • Figure 5 shows how to determine the BD/CCE budget (BD/CCE maximum number) for 120kHz SCS of the existing technology (Rle-15) and how to determine the BD/CCE budget (BD/CCE maximum number) for 480kHz SCS. showing.
  • BD/CCE maximum number the maximum number of BDs/CCEs is determined for each slot
  • 480 kHz SCS the maximum number of BDs/CCEs is determined for each multi-slot constituting a slot group.
  • FIG. 6 shows an example of capabilities that a UE must support for PDCCH monitoring in Rel-15.
  • type1 CSS type3 CSS, and UE-SS (UE-dedicated search space) with dedicated RRC configuration
  • the UE supports monitoring occasions within the first three symbols of the slot.
  • type 1 CSS type 0, 0A, 2 CSS without RRC dedicated configuration
  • the UE shall support any OFDM symbol in a slot as a monitoring opportunity.
  • the positions of all kinds of SS are assigned to certain slots (slot(s))/symbols ( symbol(s)). That is, the UE monitors the PDCCH only in specific time ranges in each slot group.
  • This particular time range is hereinafter referred to as the "Y slot".
  • the unit of the specific time range is a slot here, the unit of the specific time range may be a symbol or a slot and a symbol.
  • the terminal 20 receives the SSB from the base station 10, and the number (index) of the SSB (for example, the SSB with the highest received power among the plurality of SSBs of the plurality of beams transmitted from the base station 10)
  • the type0-PDCCH in the type0-PDCCH CSS is monitored in the slot n0 calculated based on.
  • O and M are values corresponding to indexes defined in Table 13-11/12 (FIGS. 8 and 9) of Non-Patent Document 1.
  • the index is notified from the base station 10 to the terminal 20 .
  • N slot frame, ⁇ is the number of slots per frame when SCS is 15 ⁇ 2 ⁇ .
  • the terminal 20 monitors two consecutive slots (slots n 0 and n 0 +1).
  • a PO is a set of 'S*X' consecutive PDCCH monitoring occasions where 'S' is the number of actual transmitted SSBs determined according to ssb-PositionsInBurst in SIB1 and X is the nrofPDCCH-MonitoringOccasionPerSSB-InPO if configured or is equal to 1 otherwise.
  • ⁇ Task 1> Assuming that the position of the Y slot corresponding to multi-slot PDCCH monitoring capability is fixed for all terminals, depending on the SSB associated with the best beam in terminal 20, the type0-PDCCH CSS monitoring slot (CORESET#0 monitoring slot) is It may not be contained within the Y slot.
  • the monitoring slots of CORESET#0 corresponding to SSB#2/#6 etc. are not included in the Y slot.
  • Fig. 13 shows an example of a situation where the above problem occurs.
  • the Y slot is defined (or set) to monitor the type0-PDCCH CSS slot for SSB#0 and the like.
  • the position of the Y slot within the slot group is then updated as shown in the bottom row. Since the Y slot after the update is positioned to monitor the type0-PDCCH CSS slot for SSB#2, etc., the slot before the update cannot monitor the type0-PDCCH CSS set in that slot.
  • Example 1 corresponds to problem 1
  • example 2 corresponds to problem 2.
  • Example 1 and Example 2 may be implemented in combination, or may be implemented separately. The outlines of Examples 1 and 2 are as follows.
  • Example 1 Considering the limitation of multi-slot PDCCH monitoring capability in terminal 20, define (or set) the relationship between SSB and type0-PDCCH CSS monitoring opportunities.
  • Example 2 Realize matching between type0-PDCCH CSS slots and other SS slots.
  • Example 1 In Example 1, the relationship between SSBs in SSB/CORESET#0 multiplexing pattern 1 and type 0-PDCCH monitoring opportunities is defined (or set) in consideration of multi-slot PDCCH monitoring capability constraints.
  • multiplexing pattern 1 is assumed, but the technology according to the present invention is not limited to multiplexing pattern 1, and can be applied to multiplexing patterns 2 and 3, for example.
  • the terminal 20 receives SSB from the base station 10 .
  • the terminal 20 determines the monitoring position of type0-PDCCH corresponding to the received SSB.
  • the terminal 20 monitors type0-PDCCH at the monitor position determined in S102.
  • the terminal 20 determines the slots so that the type0-PDCCH CSS monitoring slots corresponding to all SSB indices are included in the Y slots.
  • the details of this method are described below as Example 1-1. Also, an example regarding the number of slots to be monitored and the like will be described as Example 1-2. Example 1-1 and Example 1-2 can be implemented in combination.
  • the number of slots constituting the slot group in Embodiments 1 and 2, and the time length and time position of Y slots may be defined in advance in specifications or the like. 20 may be notified by RRC, MAC CE, DCI, or the like. Note that the SSB may also be called a synchronization signal.
  • the base station 10 calculates the relational expression between the SSB in the terminal 20 and the type0-PDCCH CSS monitoring slot, which will be described below. By performing the same calculation, it is possible to transmit the corresponding type0-PDCCH in the slot expected by each terminal.
  • the base station 10 since the terminal 20 transmits the RACH preamble using the resource corresponding to the SSB after receiving the SSB, the base station 10 receives the preamble using the resource to determine the SSB received by the terminal 20. can be done.
  • the base station 10 may transmit the type0-PDCCH to the terminal 20 in the slot corresponding to the SSB thus grasped.
  • Example 1-1 the terminal 20 determines monitoring slots such that the type0-PDCCH CSS monitoring slots corresponding to all SSB indices are included in the Y slots. Specific examples will be described as option 1 and option 2.
  • the terminal 20 can calculate n0 corresponding to any SSB#x to be included in the Y slot.
  • terminal 20 can calculate n0 corresponding to any SSB#x to be included in Y slots.
  • the terminal 20 can calculate n0 corresponding to any SSB#x to be included in the Y slot.
  • the Y slot is the first two slots of the slot group.
  • O 0.
  • terminal 20 can calculate n0 corresponding to any SSB#x to be included in Y slots.
  • Both M and x in option 1 and option 2 may be, for example, values defined in the specifications, or notified from the base station 10 to the terminal 20 by RRC, MAC CE, DCI, etc. can be a value.
  • Example 1-2 In Example 1-2, the slot in which the terminal 20 monitors the type0-PDCCH CSS is extended. Options 1 to 3 are described below.
  • terminal 20 monitors only slot n0 .
  • the time width of the Y slot may be 1 slot.
  • terminal 20 monitors two slots (slots n 0 and n 0 +X).
  • X may be 1 or a value greater than 1.
  • X may be the number of slots that make up the slot group. It is assumed that terminal 20 receives type 0-PDCCH in either slot n 0 or slot n 0 +X.
  • the base station 10 may transmit the type 0-PDCCH in either one of the n 0 slot and the n 0 +X slot, or may transmit the type 0-PDCCH in both the n 0 slot and the n 0 +X slot.
  • PDCCH may be transmitted.
  • FIG. 17 shows an example of option 2 where X is the number of slots forming a slot group.
  • X is the number of slots forming a slot group.
  • 4 slots constitute one slot group, and, for example, slot 0 is calculated as the monitoring slot for SSB#0.
  • terminal 20 monitors slot #0 and slot #(0+4).
  • terminal 20 monitors a number of slots greater than two (eg, n 0 , n 0 +X, n 0 +2X, . . . ).
  • X may be 1 or a value greater than 1.
  • X may be the number of slots that make up the slot group. Also, the number of slots to be monitored may be specified in the specification, or may be notified from the base station 10 to the terminal 20 by RRC, MAC CE, DCI, or the like.
  • terminal 20 receives type 0-PDCCH in at least one of the plurality of monitored slots.
  • the base station 10 transmits the type0-PDCCH in at least one slot out of a plurality of slots.
  • FIG. 18 shows an example of option 3 where X is the number of slots forming a slot group and three slots are monitored for one SSB.
  • X is the number of slots forming a slot group and three slots are monitored for one SSB.
  • 4 slots form one slot group, and for example, slot #0 is calculated as the monitoring slot for SSB#0.
  • terminal 20 monitors slot #0, slot #(0+4) and slot #(0+4 ⁇ 2).
  • the period (periodicity) of type0-PDCCH monitoring opportunities corresponding to a certain SSB is considered to increase compared to the conventional, but according to option 3, the terminal 20, Since monitoring is performed in multiple slots, the flexibility of the scheduling period can be improved.
  • the terminal 20 can appropriately monitor type0-PDCCH in multi-slot PDCCH monitoring.
  • the technology described in the first embodiment that is, the technology for determining the PDCCH monitoring slot so that the PDCCH monitoring slot corresponding to the received SSB is included in the Y slot is not limited to type 0-PDCCH, and other types of It may be applied to PDCCH.
  • Example 2 Next, Example 2 will be described. An overall basic processing procedure of the second embodiment will be described with reference to FIG. Example 2 is envisioned to be combined with Example 1, but is not so limited. Example 2 may be implemented separately from Example 1.
  • the terminal 20 receives the SSB transmitted from the base station 10.
  • the terminal 20 determines the time position of the Y slot.
  • the terminal 20 receives, from the base station 10, SS setting information other than the type0-PDCCH CSS corresponding to the position of the Y slot determined in S202.
  • step 1 the process of determining the Y slot position by the terminal 20 will be described as “step 1”, and the process related to the setting of SSs other than the type0-PDCCH CSS will be described as “step 2".
  • step 2 the process related to the setting of SSs other than the type0-PDCCH CSS.
  • the terminal 20 and the base station 10 can also determine (set).
  • the time width of the Y slot in the second embodiment may be determined in advance by the specification, may be determined by the terminal 20 (and the base station 10) in S202, or may be determined by the terminal 20 (and the base station 10) in S202. 20 may be notified by RRC, MAC CE, DCI, etc.
  • the terminal 20 after receiving the SSB, transmits a RACH preamble using the resource corresponding to the SSB, and the base station 10 receives the preamble using the resource, thereby transmitting the SSB received by the terminal 20. can be judged. Therefore, the base station 10 can determine (update) the Y slot by the same method as for the terminal 20 described below, and configure SSs other than the type 0-PDCCH CSS so as to be included in the Y slot. Furthermore, the PDCCH can be transmitted at the time positions included in the Y slot.
  • Example 2 The terminal 20 determines the position of the Y slot within the slot group in the multi-slot PDCCH monitoring, where the Y slot is the n0 slot, the n0 +X slot, or the " n0 slot and the n0 +X slot.” determine to include X may be 1, or may be the number of slots forming a slot group.
  • Example 1 can be applied to the determination method of n 0 , n 0 +X, and the like. However, the second embodiment can also be applied when n 0 and n 0 +1 are determined by the existing technology.
  • the terminal 20 can determine the position of the Y slot based on either the n 0 slot or the n 0 +X slot that monitors the type0-PDCCH CSS.
  • the terminal 20 may determine the Y slot in the slot group based on the type 0A/1/2/3-CSS/USS monitoring slot instead of the type 0-PDCCH CSS monitoring slot.
  • the type 0-PDCCH CSS monitoring slot may be determined to match the Y slot determined based on the type 0A/1/2/3-CSS/USS monitoring slot.
  • FIG. 20 shows an example in which one slot group consists of 8 slots.
  • the terminal 20 can determine the Y slot based on the slot in which the type0-PDCCH was actually received ( n0 slot in the upper example of FIG. 20). That is, in the example of the upper part of FIG. 20, 4 slots from the end to the beginning of the slot group are determined as Y slots so as to include n0 slots without crossing the boundary of the slot group. After determining this Y slot, while the SSB is not changed, the terminal 20 performs PDCCH monitoring at the Y slot position shown in the upper part of FIG. 20 in each slot group.
  • four slots from the beginning of the slot group are determined as Y slots so as to include n 0 +1 slots without crossing the boundary of the slot group.
  • the terminal 20 After determining this Y slot, while the SSB is not changed, the terminal 20 performs PDCCH monitoring at the position of the Y slot shown in the lower part of FIG. 20 in each slot group.
  • the terminal 20 updates the position of the Y slot in the slot group.
  • the method of determining the Y slots in updating may be the same as the method of determining the first Y slots described above, or the method of determining the Y slots at the time of updating may be different from that at the beginning.
  • the terminal 20 may determine the position of the Y slot as shown in FIG. 21, for example. That is, the terminal 20 may determine the positions of the Y slots such that the n0 slot is included in the leading slot, trailing slot, or trailing-Q slots of the Y slots.
  • the (end-Q) slot of Y slots is the Q-th slot counted from the end slot to the beginning in Y slots.
  • the Q of the last slot is 0.
  • Q may be 1 or may be a number greater than 1.
  • the “n 0 slot” here may be any type 0-PDCCH monitoring slot.
  • the base station 10 can grasp the SSB received by the terminal 20, the Y slot can be determined/updated in the same manner as the terminal 20 determines/updates the Y slot.
  • the terminal 20 may assume that any symbol in the Y slot is a monitoring opportunity, or any symbol in the Y slot may be a monitoring opportunity. It may be assumed that only symbols are restricted to monitoring opportunities. This limit may vary depending on UE capabilities.
  • symbols that can be set as monitoring opportunities may be restricted.
  • Step 2> other SSs (one or more SSs) other than the type0-PDCCH CSS are set (determined) so that the terminal 20 can monitor the other SSs in the Y slot.
  • This determination process may be performed by the base station 10 and settings may be made from the base station 10 to the terminal 20, or both the terminal 20 and the base station 10 may perform this determination process.
  • Other SSs include at least one of type 0A/1 (before RRC connection and/or after RRC connection)/2/3 CSS and USS.
  • the monitoring slot of the type 0A/2-PDCCH CSS whose monitoring position is determined based on the SSB received by the terminal 20 (referred to as SSB#A) is determined based on n 0 corresponding to SSB#A. It may be determined to be included in the slot.
  • SSB#A the monitoring slot of the type 0A/2-PDCCH CSS whose monitoring position is determined based on the SSB received by the terminal 20
  • Option 1 In 480/960 kHz SCS, the type 0A/2-PDCCH CSS monitoring slot is determined to be included in the Y slot determined based on the type 0-PDCCH CSS monitoring slot corresponding to SSB#A. That is, in the 480/960 kHz SCS, the relationship between type 0A/2-PDCCH CSS and SSB may be changed from existing regulations.
  • the terminal 20 may shift the type 0A/2-PDCCH CSS monitoring slot so that it is included in the Y slot. This process may be applied to "SS other than type 0-PDCCH CSS" other than type 0A/2-PDCCH CSS.
  • Option 1 From the base station 10 to the terminal 20, the SS time domain settings other than the type0-PDCCH CSS are updated by RRC configuration.
  • Option 2 The terminal 20 shifts the time positions of SSs other than the type0-PDCCH CSS to match the updated Y slot, and the base station 10 activates a new TCI state by, for example, MAC CE. That is, in this case, since the SSB has been updated, it is necessary to adapt the QCL relationship (TCI state) of the PDCCH of the SS other than the type0-PDCCH CSS to the updated SSB. Therefore, it activates a new TCI state.
  • TCI state QCL relationship
  • MAC CE may support signaling that notifies multiple TCI IDs for multiple CORRSET IDs.
  • the terminal 20 can apply one of the already received multiple TCI IDs to the "SS other than type 0-PDCCH CSS" after updating the SSB.
  • terminal 20 may shift the time position of “type 0-SS other than PDCCH CSS” using slot offset z between n 0 before update and n 0 after update.
  • the slot group to which the shifted positions of the SSs other than the type0-PDCCH CSS belong may be different from the slot group before updating.
  • the terminal 20 updates the type 0A/2-PDCCH CSS monitoring opportunity slot according to existing regulations, and the updated monitoring slot is included in the updated Y slot. You can shift to
  • Option 2 An example of Option 2 will be described with reference to FIG.
  • the terminal 20 Before updating the Y slot, the terminal 20 monitors the type0-PDCCH in the n0 slot in the Y slot as shown in the figure, and monitors the PDCCH of SS#x in the SS#x slot set by monitoringSlotPeriodicityAndOffset in SearchSpace. Monitor.
  • the terminal 20 applies the slot offset z between n0 before update and n0 after update to the monitoring slot of SS#x, shifted by z.
  • the PDCCH of SS#x is monitored at the slot position (position within Y slots after update). Since the base station 10 also performs similar processing, the terminal 20 can monitor the PDCCH of SS#x in the Y slot. Also, the base station 10 can transmit the PDCCH at the time position of SS#x.
  • type 1/3 CSS and/or USS monitoring opportunity slots may be determined in association with the SSB index received by the terminal 20 .
  • type 1/3 CSS and/or USS monitoring opportunity slots and SSBs may be defined in the specification, or may be instructed from the base station 10 to the terminal 20 by higher layer signaling.
  • the same relationship as the relationship between SSBs and monitoring slots of type 0-PDCCH CSS, type 0A-PDCCH, and type 2-PDCCH may be applied to type 1 CSS, type 3 CSS, or USS.
  • the Y slot can be determined/updated and the SS monitoring slot can be determined/updated so that the PDCCH can be monitored appropriately.
  • Example 1 an example commonly applied to the present embodiment (Example 1 and Example 2) will be described. At least one of the multiple options described in Examples 1 and 2 may be supported. Also, the options described in the first and second embodiments may be combined arbitrarily.
  • each proposal described in Examples 1 and 2 may be applied only to a specific SCS (eg, SCS of 480 kHz or higher). Also, each proposal described in the first and second embodiments may be applied only to a specific frequency range (eg, FR2-2). Moreover, each proposal content described in the first and second embodiments may be applied to the licensed band, may be applied to the unlicensed band, or may be applied to both.
  • SCS SCS of 480 kHz or higher
  • each proposal described in the first and second embodiments may be applied only to a specific frequency range (eg, FR2-2).
  • each proposal content described in the first and second embodiments may be applied to the licensed band, may be applied to the unlicensed band, or may be applied to both.
  • each proposal described in the first and second embodiments may be applied based on signaling of capability information (UE capability) from the terminal 20 to the base station 10. For example, when the base station 10 determines that the terminal 10 has the capability of one of the proposals described in the first and second embodiments, the proposal may be applied.
  • UE capability capability information
  • FIG. 23 is a diagram showing an example of the functional configuration of the base station 10.
  • the base station 10 has a transmitting section 110, a receiving section 120, a setting section 130, and a control section 140.
  • the functional configuration shown in FIG. 23 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. 24 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. 11 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 receiver that receives a synchronization signal from a base station; a control unit that determines a time position for monitoring the downlink control channel based on the synchronization signal so that the downlink control channel can be monitored within a specific time range in the slot group.
  • (Section 2) 2. The terminal according to claim 1, wherein the control unit determines the time position using a formula including values that are multiples of four.
  • (Section 4) The terminal according to any one of items 1 to 3, wherein the receiving unit monitors the downlink control channel in only one slot, two slots, or three or more slots.
  • (Section 5) a transmitter that transmits a synchronization signal to a terminal; a control unit that determines a time position for transmitting the downlink control channel based on a synchronization signal received by the terminal so that the terminal can monitor the downlink control channel within a specific time range in a slot group; station.
  • (Section 6) receiving a synchronization signal from a base station; Determining a time position for monitoring the downlink control channel based on the synchronization signal so that the downlink control channel can be monitored within a specific time range in the slot group; The monitoring method that the terminal performs.
  • the terminal can appropriately monitor the PDCCH in multi-slot PDCCH monitoring.
  • the second and third terms are calculated by the formula, it is possible to make a clear decision.
  • the fourth term increases scheduling flexibility.
  • the present embodiment provides at least a terminal, a base station, and a monitoring method described in items 1 to 6 below.
  • a control unit that determines the specific time range such that the specific time range in the slot group includes a first time position for monitoring the first downlink control channel; and a receiver that monitors the first downlink control channel within the specific time range.
  • the control unit monitors the second downlink control channel, which is monitored in a search space different from the search space of the first downlink control channel, within the specific time range. 2.
  • the terminal of claim 1 wherein the terminal determines a second time position to monitor the .
  • the control unit updates the specific time range to include the updated first time position.
  • the control unit updates the second time position such that the second time position is included within the specific time range after updating.
  • a base station comprising: a transmitter that transmits the first downlink control channel within the specific time range.
  • determining the specific time range such that the first time position for monitoring the first downlink control channel is included in the specific time range in the slot group; monitoring the first downlink control channel within the specific time range; The monitoring method that the terminal performs.
  • the terminal can appropriately monitor the PDCCH in multi-slot PDCCH monitoring.
  • the second term it is possible to appropriately monitor the second downlink control channel.
  • the third and fourth items even when the SSB or the like is updated, it is possible to perform monitoring appropriately.
  • 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. 25 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. 23 may be implemented by a control program stored in storage device 1002 and operated by processor 1001 .
  • the control unit 240 of the terminal 20 shown in FIG. 24 may be implemented by a control program stored in the storage device 1002 and operated by the processor 1001.
  • FIG. Processor 1001 may be implemented by one or more chips. Note that 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. 26 shows a configuration example of the vehicle 2001.
  • a vehicle 2001 includes a driving section 2002, a steering section 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 section 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 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

Un terminal comprend : une unité de réception qui reçoit un signal de synchronisation en provenance d'une station de base ; et une unité de commande qui détermine une position temporelle pour surveiller un canal de commande de liaison descendante et qui est capable, sur la base du signal de synchronisation, de surveiller ledit canal de commande de liaison descendante dans une plage de temps spécifique dans un groupe de créneaux.
PCT/JP2021/040679 2021-11-04 2021-11-04 Terminal, station de base et procédé de surveillance WO2023079660A1 (fr)

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Country Status (1)

Country Link
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Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
LG ELECTRONICS: "PDCCH monitoring enhancements to support NR above 52.6 GHz", 3GPP TSG RAN WG1 #106B-E R1-2109962, 2 October 2021 (2021-10-02), XP052058880 *
OPPO: "Discussion on PDCCH monitoring enhancement", 3GPP TSG RAN WG1 #106B-E R1-2109071, 1 October 2021 (2021-10-01), XP052058031 *
SHARP: "PDCCH monitoring enhancements", 3GPP TSG RAN WG1 #106B-E R1-2109993, 2 October 2021 (2021-10-02), XP052058929 *

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