Terminal device, base station device, and communication method

Abstract

To provide a terminal device, a base station device and a communication method to communicate efficiently.SOLUTION: There is provided a terminal device which communicates with a base station device by using a primary cell and at least one secondary cell. The terminal device includes: an upper layer processing unit that receives information pertaining to a timing for receiving an SS / PBCH block and information pertaining to a timing for terminating reception of an SS / PBCH block; and a wireless reception unit that receives an SS / PBCH block. The SS / PBCH block is an SS / PBCH block that is transmitted based on information pertaining to the timing for receiving the SS / PBCH block. The timing for receiving the SS / PBCH block is determined based on information indicating whether to transmit the SS / PBCH block, and the timing for terminating reception of the SS / PBCH block is determined based on information indicating whether to terminate transmission of the SS / PBCH block.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a terminal device, a base station device, and a communication method. [Background technology]

[0002] A wireless access method and wireless network for cellular mobile communications (hereinafter referred to as "LTE (Long The Third Generation Partnership Project (3GPP) is a non-profit organization that is working on the Third Generation Partnership Project (3GPP), also known as the "Evolved Universal Terrestrial Radio Access (EUTRA)" or "EUTRA (Evolved Universal Terrestrial Radio Access)." rd In LTE, a base station device may also be referred to as an evolved NodeB (eNodeB), and a terminal device may also be referred to as User Equipment (UE). LTE is a cellular communication system in which base station devices are arranged to cover multiple cell-like areas, and one base station device may manage one or multiple serving cells.

[0003] 3GPP is currently studying the next-generation wireless communication standard (NR: New Radio) to be proposed for IMT (International Mobile Telecommunication)-2020, the next-generation mobile communication system standard formulated by the International Telecommunication Union (ITU) (Non-Patent Document 1). is a single technology framework that combines eMBB (enhanced Mobile BroadBand), mMTC It is required to meet the requirements for three scenarios: (massive Machine Type Communication), and URLLC (Ultra Reliable and Low Latency Communication). [Prior art documents] [Non-patent literature]

[0004] [Non-Patent Document 1] "New SID proposal: Study on New Radio Access Technology", RP-160671, NTT DOCOMO, 3GPP TSG RAN Meeting #71, Goteborg, Sweden, 7th - 10th March, 2016. Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention provides a terminal device, a base station device, and a communication method used in the terminal device or the base station device that perform communication efficiently. [Means for solving the problem]

[0006] (1) A first aspect of this embodiment of the present invention is a terminal device that communicates with a base station device using a primary cell and at least one secondary cell, and receives an SS / PBCH block. information about the timing to receive the SS / PBCH block and the timing to end reception of the SS / PBCH block The upper layer processing unit receives information about the SS / PBCH block. the SS / PBCH block is an SS / PBCH block that is transmitted based on information regarding a timing for receiving the SS / PBCH block, and the timing for receiving the SS / PBCH block is determined based on information indicating whether to transmit the SS / PBCH block. The timing for ending reception of the SS / PBCH block is determined based on information indicating whether to stop transmission of the SS / PBCH block.

[0007] (2) A terminal device according to a first aspect of the present embodiment of the present invention, wherein the SS / PBCH block The information about the timing for finishing receiving the block is indicated by the slot number.

[0008] (3) A terminal device according to the first aspect of the present embodiment of the present invention, wherein the SS / PBCH block The information about the timing for completing reception of the SS / PBCH block is It is defined by the information indicating the relative time from the timing of receiving the information indicating whether or not the previous The information indicating the relative time is expressed as a slot number, a subframe number, or a frame number.

[0009] (4) A terminal device according to a first aspect of this embodiment of the present invention, further comprising a transmitting unit for transmitting an uplink channel or signal, wherein the transmitting unit requests an SS / PBCH block of a secondary cell using an uplink channel or signal, and the timing for receiving information indicating whether to transmit the SS / PBCH block is the timing for receiving a response from the terminal device.

[0010] (5) A terminal device according to the first aspect of the present embodiment of the present invention, wherein the SS / PBCH block The timing at which the information indicating whether to transmit a secondary cell is received is the timing at which the information to activate the secondary cell or turn on the secondary cell transmitted from the base station device is received.

[0011] (6) In a terminal device according to a first aspect of this embodiment of the present invention, the number of slots is calculated based on the subcarrier spacing of a primary cell.

[0012] (7) A base station device that communicates with a terminal device using a primary cell and at least one secondary cell according to a second aspect of the present embodiment of the present invention, Information about the timing for receiving and for completing reception of the SS / PBCH block an upper layer processing unit that transmits information regarding timing; a radio transmission unit that transmits an SS / PBCH block, the SS / PBCH block being an SS / PBCH block that is transmitted based on information relating to a timing for receiving the SS / PBCH block, the timing for receiving the SS / PBCH block being determined based on information indicating whether or not to transmit the SS / PBCH block, and a timing for ending reception of the SS / PBCH block. The timing for stopping the transmission of the SS / PBCH block is determined based on the information indicating whether or not to stop the transmission of the SS / PBCH block. The decision is made based on the following criteria:

[0013] (8) A third aspect of the present embodiment of the present invention is a communication method for a terminal device that communicates with a base station device using a primary cell and at least one secondary cell, the method comprising: information about the timing for receiving the SS / PBCH block and to finish receiving the SS / PBCH block and receiving an SS / PBCH block and information about timing for receiving the SS / PBCH block, the SS / PBCH block being an SS / PBCH block transmitted based on information about timing for receiving the SS / PBCH block, the timing for receiving the SS / PBCH block being determined based on information indicating whether or not to transmit the SS / PBCH block, and The timing for ending the transmission indicates whether to stop transmitting the SS / PBCH block. It is an informed decision. [Effects of the Invention]

[0014] According to the present invention, the terminal device can perform communication efficiently, and the base station device can perform communication efficiently. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a conceptual diagram of a wireless communication system according to an aspect of the present embodiment. [Figure 2] 10 is an example showing the relationship between Nslot symb, SCS setting μ, and CP setting according to one aspect of the present embodiment. [Figure 3] FIG. 2 is a schematic diagram illustrating an example of a resource grid in a subframe according to an aspect of the present embodiment. [Figure 4] 1 is a schematic block diagram showing a configuration of a terminal device 1 according to an aspect of the present embodiment. [Figure 5] FIG. 2 is a schematic block diagram illustrating a configuration of a base station device 3 according to one aspect of the present embodiment. [Figure 6] FIG. 10 is a diagram illustrating an example of processing of a terminal device according to the present embodiment. [Figure 7] FIG. 10 is a diagram illustrating an example of processing performed by a base station device according to the present embodiment. [Figure 8] FIG. 10 is a diagram illustrating an example of processing of a terminal device according to the present embodiment. [Figure 9] FIG. 10 is a diagram illustrating an example of processing performed by a base station device according to the present embodiment. [Figure 10] FIG. 10 is a diagram illustrating an example of processing of a terminal device according to the present embodiment. [Figure 11] FIG. 10 is a diagram illustrating an example of processing performed by a base station device according to the present embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, an embodiment of the present invention will be described.

[0017] "A and / or B" may be a term that includes "A", "B", or "A and B".

[0018] FIG. 1 is a conceptual diagram of a wireless communication system according to one aspect of the present embodiment. In FIG. 1, the wireless communication system includes terminal devices 1A to 1C and a base station device 3. Hereinafter, the terminal devices 1A to 1C may also be referred to as terminal devices 1. The base station device 3 may also be referred to as a communication device, a node, a NB (NodeB), an eNB, a gNB, a network device (core network, gateway, etc.), etc. The terminal device 1 may include a part or all of the access point (way). The terminal device 1 may also be referred to as UE (User Equipment). The eNB is a node that provides EUTRA user plane and control plane protocol termination for one or more terminal devices 1, and in particular, connects to the fifth generation core via an NG (Next Generation) interface. An eNB connected to the network (5GC) is referred to as an ng-eNB. The gNB is a node that provides NR user plane and control plane protocol termination for one or more terminal devices 1 and is connected to the 5GC via an NG interface.

[0019] The base station device 3 may configure one or both of an MCG (Master Cell Group) and an SCG (Secondary Cell Group). The MCG is a group of serving cells including at least a PCell (Primary Cell). The SCG includes at least A PCell is a group of serving cells including a PSCell (Primary Secondary Cell). A PCell may be a serving cell provided based on initial connection. An MCG may be configured to include one or more SCells (Secondary Cells). An SCG may be configured to include one or more SCells. A PCell and a PSCell may be referred to as an SpCell (Special Cell). Configuring one CG (Cell Group) using one SpCell and one or more SCells and performing communication may be referred to as carrier aggregation.

[0020] The MCG may be configured with one or more serving cells on EUTRA. The SCG may be configured with one or more serving cells on NR. The MCG may be configured with one or more serving cells on NR. The SCG may be configured with one or more serving cells on EUTRA. The MCG and SCG may be configured with one or more serving cells on either EUTRA or NR. Here, EUTRA refers to EUTRA RAT (Radio Access Technology) "over NR" may also mean that the NR RAT is applied.

[0021] Furthermore, the MCG may be configured by the first base station device. Furthermore, the SCG may be configured by the second base station device. That is, the PCell may be configured by the first base station device. The PSCell may be configured by the second base station device. The first base station device and the second base station device may each be the same as the base station device 3.

[0022] The frame structure will be explained below.

[0023] In a wireless communication system according to an aspect of this embodiment, at least Orthogonal Frequency Division Multiplex (OFDM) is used. OFDM is a unit of time domain. An OFDM symbol contains at least one or more subcarriers. The OFDM symbol is converted into a time-continuous signal in baseband signal generation. In the downlink, at least CP-OFDM (Cyclic Prefix - Orthogonal Frequency Division Multiplexing) is used. In the link, CP-OFDM or DFT-s-OFDM (Discrete Fourier Transform) Transform, spread or Orthogonal Frequency Division Multiplex) is used. DFT-s-OFDM may be obtained by applying transform precoding to CP-OFDM.

[0024] The subcarrier spacing (SCS) is Δf=2 μ For example, the SCS setting μ may be set to 0, 1, 2, 3, 4, and / or 5. For a certain BWP (BandWidth Part), the SCS setting μ may be given by a higher layer parameter. That is, the value of μ may be set for each BWP (for each downlink BWP, for each uplink BWP), regardless of whether it is downlink or uplink.

[0025] In the wireless communication system according to one aspect of this embodiment, a time unit T is used to express a length in the time domain. c The time unit T c is T c =1 / (Δf max N f ) may be given by Δf max may be the maximum value of the SCS supported in the wireless communication system according to one aspect of the present embodiment. max is Δf max = 480 kHz. f is N f = 4096. The constant κ can be expressed as κ = Δf max N f / (Δf ref N f,ref )=64. Δf ref may be 15 kHz. f,ref may be 2048.

[0026] The constant κ is the reference SCS and T c The constant κ may be used for the length of the subframe. The number of slots included in the subframe may be determined based at least on the constant κ. ref is the reference SCS and N f,ref is the value corresponding to the reference SCS.

[0027] The transmission of signals in the downlink and / or the transmission of signals in the uplink is configured by a frame of 10 ms. The frame is configured to include 10 subframes. The length of the subframe is 1 ms. The length of the frame may be given regardless of the SCS Δf. That is, the setting of the frame may be given regardless of the value of μ. The length of the subframe may be given regardless of the SCS Δf. That is, the setting of the subframe may be given regardless of μ.

[0028] For a given SCS setting μ, the number and index of slots included in one subframe may be given. For example, slot number n μ s ranges from 0 to N in the subframe subframe,μ slot The number of slots included in one frame and their index may be given for each SCS setting μ. μ s,f is the number of frames from 0 to N frame,μ slot -1. slot symb N OFDM symbols may be included in one slot. slot symb and / or CP(Cyclic The CP setting may be based on at least some or all of the Prefix setting. The CP configuration may be based at least on a parameter of the layer. The CP configuration may be based at least on dedicated RRC signaling. The slot number may also be referred to as a slot index.

[0029] FIG. 2 shows an N slot symb 2A is an example showing the relationship between the SCS setting μ (also referred to as the subcarrier spacing setting u) and the CP setting. For example, if the SCS setting μ is 2 and the CP setting is normal CP (NCP), then N slot symb =14, N frame,μ slot =40, N subframe,μ slot 2B, for example, when the SCS setting μ is 2 and the CP setting is the extended CP (ECP), N slot symb =12, N frame,μ slot =40, N subframe,μ slot =4.

[0030] The physical resources according to this embodiment will be described below.

[0031] An antenna port is defined by the fact that the channel through which symbols are transmitted at one antenna port can be estimated from the channel through which other symbols are transmitted at the same antenna port. If the large-scale properties of the channel through which symbols are transmitted at one antenna port can be estimated from the channel through which symbols are transmitted at another antenna port, the two antenna ports may be referred to as Quasi Co-Located (QCL). The large-scale properties may include at least the long-range properties of the channel. The large-scale properties may include some or all of the delay spread, Doppler spread, Doppler shift, average gain, average delay, and spatial Rx parameters. The terminal device 1 may include at least a QCL unit. The first antenna port and the second antenna port being QCLs in terms of beam parameters may mean that a receive beam assumed by the receiving side for the first antenna port is the same as a receive beam assumed by the receiving side for the second antenna port. The first antenna port and the second antenna port being QCLs in terms of beam parameters may mean that a transmit beam assumed by the receiving side for the first antenna port is the same as a transmit beam assumed by the receiving side for the second antenna port. The terminal device 1 may assume that two antenna ports are QCLs if the large-scale characteristics of a channel through which symbols are transmitted at one antenna port can be estimated from the channel through which symbols are transmitted at another antenna port. The two antenna ports being QCLs may mean that two antenna ports are assumed to be QCLs.

[0032] For the SCS setting μ and the set of carriers, N size,μ grid,x N RB sc subcarriers and N subframe,μ symbGiven a resource grid defined by N OFDM symbols, size,μ grid,x may denote the number of resource blocks provided for SCS configuration μ for carrier x. size,μ grid,x may denote the bandwidth of the carrier. size,μ grid,x may correspond to the value of the higher layer parameter CarrierBandwidth. Carrier x may indicate either a downlink carrier or an uplink carrier. That is, x may be either "DL" or "UL". N RB sc may represent the number of subcarriers included in one resource block. RB sc may be 12. At least one resource grid may be provided for each antenna port p and / or for each SCS setting μ and / or for each transmission direction setting. The transmission direction includes at least a downlink (DL) and an uplink (UL). Hereinafter, a parameter set including at least the antenna port p, the SCS setting μ, and some or all of the transmission direction settings is also referred to as a first radio parameter set. That is, one resource grid may be provided for each first radio parameter set. Note that the radio parameter set may be one or more sets including one or more radio parameters (physical layer parameters or higher layer parameters).

[0033] In the downlink, a carrier included in a serving cell is called a downlink carrier (or a downlink component carrier). In the uplink, a carrier included in a serving cell is called an uplink carrier (or an uplink component carrier). The downlink component carrier and the uplink component carrier may be collectively called a component carrier (or a carrier).

[0034] The type of serving cell may be any of PCell, PSCell, and SCell. The PCell is identified by a cell ID (physical layer cell ID, physical cell ID) obtained from the SSB (Synchronization signal / Physical broadcast channel block) at the initial connection. The SCell may be a serving cell identified at least based on a specific RRC signaling (e.g., a cell ID). The SCell may be a serving cell used in carrier aggregation. The SCell may be a serving cell assigned at least based on dedicated RRC signaling. Furthermore, the SSB may be referred to as an SS / PBCH (Synchronization Signal / Physical Broadcast CHannel) block.

[0035] Each element in the resource grid provided for each first radio parameter set may be referred to as a resource element (RE). sc and the time domain index l sym For a given first radio parameter set, the resource elements are identified by frequency domain index k sc and the time domain index l sym The frequency domain index k is specified by sc and the time domain index l sym The resource element identified by sc , l sym ) The frequency domain index k sc is from 0 to N μ RB N RB sc It indicates either the value of -1 or N. μ RB may be the number of resource blocks given for the SCS configuration μ. μ RB is N size,μ grid,x N RBsc is the number of subcarriers contained in the resource block, and N RB sc = 12. The frequency domain index k sc is the subcarrier index k sc The time domain index l sym is the OFDM symbol index l sym One or more resource elements may correspond to a physical resource and a complex value (a complex-valued modulation symbol). One or more information bits (information bits for control information, a transport block, or higher layer parameters) may be mapped to each of the one or more resource elements corresponding to a physical resource and / or a complex value.

[0036] 3 is a schematic diagram illustrating an example of a resource grid in a subframe according to one aspect of this embodiment. In the resource grid of FIG. 3, the horizontal axis represents the time domain index l sym and the vertical axis is the frequency domain index k sc In one subframe, the frequency domain of the resource grid is N μ RB N RB sc In one subframe, the time domain of the resource grid is 14 2 μ One resource block may contain N OFDM symbols. RB sc The resource block may include subcarriers. The time domain of the resource block may correspond to one OFDM symbol. The time domain of the resource block may correspond to 14 OFDM symbols. The time domain of the resource block may correspond to one or more slots. The time domain of the resource block may correspond to one subframe.

[0037] The terminal device 1 may be instructed to transmit and receive using only a subset of the resource grid. The subset of the resource grid is also called BWP, and the BWP is a higher layer The BWP may be provided based on at least some or all of the parameters and / or DCI. The BWP may also be referred to as CBP (Carrier Bandwidth Part). The terminal device 1 may not be instructed to transmit and receive using the entire set of the resource grid. The terminal device 1 may be instructed to transmit and receive using some frequency resources in the resource grid. One BWP may be composed of multiple resource blocks in the frequency domain. One BWP may be composed of multiple consecutive resource blocks in the frequency domain. A BWP set for a downlink carrier may also be referred to as downlink BWP. A BWP set for an uplink carrier may also be referred to as uplink BWP. A BWP may be a subset of the band of a carrier (a subset of the frequency domain in a carrier).

[0038] One or more downlink BWPs may be configured for each serving cell, and one or more uplink BWPs may be configured for each serving cell.

[0039] Of one or more downlink BWPs configured for a serving cell, one downlink BWP may be configured as an active downlink BWP. A downlink BWP switch may be used to deactivate one active downlink BWP and activate inactive downlink BWPs other than the one active downlink BWP. The switching of the downlink BWP may be controlled by a BWP indication field included in the downlink control information. The switching of the downlink BWP may be controlled based on a parameter of a higher layer.

[0040] In an active downlink BWP, the DL-SCH may be received, the PDCCH may be monitored, and the PDSCH may be received.

[0041] In an inactive downlink BWP, the DL-SCH may not be received, the PDCCH may not be monitored, and CSI for the inactive downlink BWP may not be reported.

[0042] Of one or more downlink BWPs configured for the serving cell, two or more downlink BWPs may not be configured as active downlink BWPs.

[0043] Of one or more uplink BWPs configured for a serving cell, one uplink BWP may be configured as an active uplink BWP. An uplink BWP switch is used to deactivate one active uplink BWP and activate inactive uplink BWPs other than the one active uplink BWP. The switching of uplink BWPs may be controlled by a BWP indication field included in downlink control information. The switching of uplink BWPs may be controlled based on parameters of higher layers.

[0044] In an active uplink BWP, the UL-SCH may be transmitted. In an active uplink BWP, the PUCCH may be transmitted. In an active uplink BWP, the PRACH may be transmitted. In an active uplink BWP, the SRS may be transmitted.

[0045] In an inactive uplink BWP, the UL-SCH may not be transmitted. In an inactive uplink BWP, the PUCCH may not be transmitted. In an active uplink BWP, the PRACH may not be transmitted. In an inactive uplink BWP, the SRS may not be transmitted.

[0046] Of one or more uplink BWPs configured for one serving cell, two or more uplink BWPs may not be configured as active uplink BWPs, i.e., there only needs to be at least one active uplink BWP for the serving cell that includes uplink BWPs.

[0047] The higher layer parameters are parameters included in the higher layer signals. The higher layer signals may be RRC (Radio Resource Control) signaling or MAC CE (Medium Access Control Element). Here, the higher layer signals may be RR The RRC layer signal may be a C layer signal or a MAC layer signal. The higher layer signal may be a signal of a layer higher than the physical layer. Note that the higher layer parameters provided by the RRC layer signal may be notified to and set by the base station device 3 to the terminal device 1. The higher layer parameters provided by the RRC layer signal may be referred to as RRC parameters or RRC information elements (IEs).

[0048] The higher layer signaling may be common RRC signaling, which may have at least some or all of the following features C1 to C3: C1) Mapped to BCCH logical channel or CCCH logical channel C2) At least include the ReconfigurationWithSync information element C3) Mapped to PBCH

[0049] The ReconfigurationWithSync information element may include information indicating a commonly used configuration in the serving cell. The commonly used configuration in the serving cell may include at least a PRACH configuration. The PRACH configuration may at least indicate one or more random access preamble indices. The PRACH configuration may at least indicate a time / frequency resource of the PRACH.

[0050] The common RRC signaling may include at least common RRC parameters. The common RRC parameters are parameters that are commonly used within a serving cell (cell-specific parameters). It may also be a meter.

[0051] The higher layer signaling may be dedicated RRC signaling. The dedicated RRC signaling may have at least some or all of the following features D1 to D2: D1) Mapped to DCCH logical channel D2) ReconfigurationWithSync information element is not included

[0052] For example, MIB (Master Information Block) and SIB (System Information Block) Block) may be included in common RRC signaling. Also, a higher layer message that is mapped to a DCCH logical channel and that includes at least a ReconfigurationWithSync information element may be included in common RRC signaling. Also, a higher layer message that is mapped to a DCCH logical channel and that does not include a ReconfigurationWithSync information element may be included in dedicated RRC signaling. Note that the MIB and SIB may be collectively referred to as system information.

[0053] The upper layer parameters including one or more upper layer parameters may be referred to as an information element (IE). The upper layer parameters and / or IEs including multiple IEs may be referred to as a message (upper layer message, RRC message), an information block (IB), or system information.

[0054] The SIB may at least indicate a time index of the SSB, the SIB may at least include information related to PRACH resources, and the SIB may at least include information related to setting up an initial connection.

[0055] The ReconfigurationWithSync information element may include at least information related to PRACH resources. The ReconfigurationWithSync information element may include at least information related to setting up an initial connection.

[0056] The dedicated RRC signaling may include at least dedicated RRC parameters. The dedicated RRC parameters are parameters that are used exclusively for the terminal device 1 (UE-specific). The dedicated RRC signaling may include at least common RRC parameters.

[0057] The common RRC parameters and dedicated RRC parameters may also be referred to as higher layer parameters.

[0058] The following describes physical channels and physical signals according to various aspects of the present embodiment.

[0059] An uplink physical channel may correspond to a set of resource elements carrying information generated in a higher layer. An uplink physical channel is a physical channel used in an uplink carrier. In a wireless communication system according to one aspect of the present embodiment, at least some or all of the following uplink physical channels are used: ·PUCCH (Physical Uplink Control CHannel) ·PUSCH (Physical Uplink Shared CHannel) ·PRACH(Physical Random Access CHannel)

[0060] The PUCCH may be used to transmit uplink control information (UCI). The uplink control information includes some or all of channel state information (CSI), scheduling requests (SR), and hybrid automatic repeat request ACKnowledgement (HARQ-ACK) information corresponding to transport blocks (TB). Note that the TB is a MAC address. It may also be referred to as a PDU (Medium Access Control Protocol Data Unit), DL-SCH (Downlink-Shared Channel), or PDSCH (Physical Downlink Shared Channel).

[0061] One or more types of uplink control information may be multiplexed onto the PUCCH. The multiplexed PUCCH may be transmitted. That is, multiple HARQ-ACKs may be multiplexed onto the PUCCH, multiple CSIs may be multiplexed onto the PUCCH, multiple SRs may be multiplexed onto the PUCCH, HARQ-ACKs and CSIs may be multiplexed onto the PUCCH, HARQ-ACKs and SRs may be multiplexed onto the PUCCH, or the PUCCH may be multiplexed with other types of UCI.

[0062] The HARQ-ACK information may include at least a HARQ-ACK bit corresponding to the TB. The HARQ-ACK bit may be an ACK (acknowledgement) or The HARQ-ACK information may indicate a negative-acknowledgement (NACK). The ACK may be a value indicating that decoding of the TB has been successfully completed. The NACK may be a value indicating that decoding of the TB has not been successfully completed. The HARQ-ACK information may include at least one HARQ-ACK codebook including one or more HARQ-ACK bits. The HARQ-ACK bits corresponding to one or more TBs may correspond to PDSCHs including the one or more TBs.

[0063] The HARQ-ACK bit may indicate an ACK or NACK corresponding to one Code Block Group (CBG) included in the TB. The HARQ-ACK may also be referred to as HARQ feedback, HARQ information, or HARQ control information.

[0064] The SR may be used at least to request PUSCH resources for an initial transmission. The SR may also be used to request UL-SCH resources for a new transmission. The SR bit may be used to indicate either a positive SR or a negative SR. The SR bit indicating a positive SR may also be referred to as "a positive SR is transmitted." A positive SR may indicate that a PUSCH resource for an initial transmission is requested by the terminal device 1. A positive SR may indicate that an SR is triggered by a higher layer. A positive SR may be transmitted when an SR is instructed to be transmitted by a higher layer. The SR bit indicating a negative SR may also be referred to as "a negative SR is transmitted." A negative SR may indicate that a PUSCH resource for an initial transmission is not requested by the terminal device 1. A negative SR may indicate that an SR is not triggered by a higher layer. A negative SR may be transmitted when an SR is not instructed to be transmitted by a higher layer.

[0065] The SR bit may be used to indicate either a positive SR or a negative SR for one or more SR configurations. Each of the one or more SR configurations may correspond to one or more logical channels. A positive SR for a certain SR configuration may be a positive SR for any or all of the one or more logical channels corresponding to the certain SR configuration. A negative SR may not correspond to a specific SR configuration. An indication of a negative SR may mean an indication of a negative SR for all SR configurations.

[0066] The SR setting may be an SR-ID (Scheduling Request ID). It may be given by a parameter of a higher layer.

[0067] The CSI may include at least some or all of a channel quality indicator (CQI), a precoder matrix index (PMI), and a rank indicator (RI). The CQI is an indicator related to the channel quality (e.g., propagation strength), the PMI is an indicator indicating the precoder, and the RI is an indicator indicating the transmission rank (or the number of transmission layers).

[0068] The CSI may be provided based at least on receiving a physical signal (e.g., CSI-RS) used at least for channel measurement. The CSI may include a value selected by the terminal device 1. The CSI may be selected by the terminal device 1 based at least on receiving a physical signal used at least for channel measurement. The channel measurement may include interference measurement. Note that the CSI-RS may be set based on the CSI-RS configuration or the SSB configuration.

[0069] A CSI report is a report of CSI. The CSI report may include CSI part 1 and / or CSI part 2. CSI part 1 may be configured to include at least a wideband channel quality information (wideband CQI), a wideband precoder matrix index (wideband PMI), and some or all of the RI. The number of bits of CSI part 1 multiplexed into the PUCCH may be a predetermined value regardless of the value of the RI of the CSI report. The number of bits of CSI part 2 multiplexed into the PUCCH may be given based on the value of the RI of the CSI report. The rank index of the CSI report may be the value of the rank index used for calculating the CSI report. The RI of the CSI information may be a value indicated by an RI field included in the CSI report.

[0070] The set of RIs allowed in a CSI report may be some or all of 1 to 8. The set of RIs allowed in a CSI report may also be based at least on a higher layer parameter RankRestriction. If the set of RIs allowed in a CSI report includes only one value, the RI of the CSI report may be the one value.

[0071] A priority may be set for a CSI report, which may be given based on at least some or all of a configuration regarding the time domain behavior (processing) of the CSI report, a content type of the CSI report, an index of the CSI report, and / or an index of a serving cell for which measurement of the CSI report is configured.

[0072] The setting regarding the time domain behavior (processing) of the CSI reporting may be a setting indicating whether the CSI reporting is performed aperiodic, semi-persistent, or quasi-static.

[0073] The content type of the CSI report may indicate whether the CSI report includes Layer 1 Reference Signals Received Power (RSRP).

[0074] Layer 1 refers to the physical layer and may be a layer that performs processing such as a physical layer processing unit, a radio transmitting unit, a transmitting unit, and / or a radio receiving unit, a receiving unit. Layers higher than Layer 1 include a MAC layer, an RRC layer, and an upper layer processing unit. For example, Layer 2 may refer to a MAC layer, an RLC layer, a PDCP layer, a MAC layer processing unit, an RLC layer processing unit, and a PDCP layer processing unit. Layer 3 may be an RRC layer and an RRC layer processing unit.

[0075] The PUSCH is used at least to transmit the TB (MAC PDU, UL-SCH). The USCH may be used to transmit at least some or all of the TB, HARQ-ACK information, CSI, and SR. The PUSCH is used at least to transmit a random access message 3 (message 3 (Msg3)) corresponding to the RAR (Msg2) and / or RAR grant in the random access procedure. The TB may correspond to both the uplink and the downlink. That is, the PUSCH may be used to transmit the TB for the uplink. The PDSCH may be used to transmit the TB for the downlink.

[0076] The PRACH is used at least to transmit a random access preamble (random access message 1, message 1 (Msg1)). The PRACH is also used for the initial connection establishment procedure, handover procedure, connection re-establishment procedure, and initial access procedure. The random access preamble may be used to indicate at least some or all of the following: a PUSCH request, synchronization (timing adjustment) for PUSCH transmission, and a PUSCH resource request. The random access preamble may be used to notify the base station device 3 of an index (random access preamble index) provided by a higher layer of the terminal device 1.

[0077] The random access preamble may be obtained by cyclically shifting a Zadoff-Chu sequence corresponding to a physical root sequence index u. The Zadoff-Chu sequence may be generated based on the physical root sequence index u. A plurality of random access preambles may be defined in one serving cell. The random access preamble may be identified based at least on the index of the random access preamble. Different random access preambles corresponding to different indices of the random access preamble may correspond to different combinations of the physical root sequence index u and the cyclic shift. The physical root sequence index u and the cyclic shift may be provided based at least on information included in the system information. The physical root sequence index u may be an index that identifies a sequence included in the random access preamble. The random access preamble may be identified based at least on the physical root sequence index u.

[0078] In Figure 1, the following uplink physical signals are used in uplink wireless communication: The uplink physical signals may not be used to transmit information output from higher layers, but are used by the physical layer. ·UL DMRS(UpLink Demodulation Reference Signal) ·SRS(Sounding Reference Signal) ·UL PTRS(UpLink Phase Tracking Reference Signal)

[0079] The UL DMRS is related to the transmission of PUSCH and / or PUCCH. The DMRS is multiplexed with the PUSCH or PUCCH. Base station device 3 may use the UL DMRS to perform propagation path compensation for the PUSCH or PUCCH. Hereinafter, transmitting a PUSCH together with an UL DMRS associated with the PUSCH is simply referred to as transmitting a PUSCH. Hereinafter, transmitting a PUCCH together with an UL DMRS associated with the PUCCH is simply referred to as transmitting a PUCCH. The UL DMRS associated with the PUSCH is also referred to as an UL DMRS for the PUSCH. The UL DMRS associated with the PUCCH is also referred to as an UL DMRS for the PUCCH.

[0080] The SRS may not be related to the transmission of the PUSCH or the PUCCH. The base station device 3 may use the SRS to measure the channel condition. The SRS may be transmitted at the end of a subframe in an uplink slot or within a predetermined number of OFDM symbols from the end.

[0081] The UL PTRS may be a reference signal used at least for phase tracking. The UL PTRS may be associated with a UL DMRS group including at least antenna ports used for one or more UL DMRSs. The association of the UL PTRS with the UL DMRS group may be such that the antenna port of the UL PTRS and some or all of the antenna ports included in the UL DMRS group are at least QCL. The UL DMRS group may be identified based at least on the antenna port with the smallest index among the UL DMRSs included in the UL DMRS group. The UL PTRS may be mapped to the antenna port with the smallest index among one or more antenna ports to which a single codeword is mapped. The UL PTRS may be mapped to a first layer when a single codeword is mapped to at least a first layer and a second layer. The UL PTRS may not be mapped to the second layer. The index of the antenna port to which the UL PTRS is mapped may be determined based at least on downlink control information.

[0082] 1, the following downlink physical channels are used in downlink wireless communication from the base station device 3 to the terminal device 1. The downlink physical channels are used by the physical layer to transmit information output from higher layers. ·PBCH(Physical Broadcast Channel) ·PDCCH (Physical Downlink Control Channel) ·PDSCH(Physical Downlink Shared Channel)

[0083] The PBCH is used at least to transmit the MIB and / or the PBCH payload. The PBCH payload contains information about the transmission timing of the SSB (SSB occasion). The PBCH payload may include at least information indicating an index for the SSB. The PBCH payload may include information related to an SSB identifier (index). The PBCH may be transmitted based on a predetermined transmission interval. The PBCH may be transmitted at 80 millisecond (ms) intervals. The PBCH may be transmitted at 160 ms intervals. The content of the information included in the PBCH may be updated every 80 ms. Some or all of the information included in the PBCH may be updated every 160 ms. The PBCH may be composed of 288 subcarriers. The PBCH may be composed of 2, 3, or 4 OFDM symbols. The MIB may include information related to an SSB identifier (index). The MIB may include information indicating at least a portion of the slot number, subframe number, and / or radio frame number in which the PBCH is transmitted.

[0084] The PDCCH is used at least for transmitting downlink control information (DCI). The PDCCH may be transmitted including at least DCI. The PDCCH may be transmitted including DCI. The DCI may also be referred to as a DCI format. The DCI may indicate at least either a downlink grant or an uplink grant. The DCI format used for scheduling the PDSCH may also be referred to as a downlink DCI format and / or a downlink grant. The DCI format used for scheduling the PUSCH may also be referred to as an uplink DCI format and / or an uplink grant. The downlink grant may also be referred to as a downlink assignment or a downlink allocation. The uplink DCI format includes at least one or both of DCI format 0_0 and DCI format 0_1.

[0085] The downlink DCI formats include at least one or both of DCI format 1_0 and DCI format 1_1.

[0086] DCI format 2 may include parameters used for transmission power control of the PUSCH or the PUCCH. DCI format 2 includes some or all of DCI format 2_0, DCI format 2_1, DCI format 2_2, DCI format 2_3, DCI format 2_4, DCI format 2_5, DCI format 2_6, DCI format 2_7, DCI format 2_8, and DCI format 2_9.

[0087] DCI format 2_9 may be used to activate or deactivate the cell DTX / DRX configuration of one or more serving cells for one or more UEs. I-format 2_9 is transmitted with a CRC scrambled by the NES-RNTI. DCI format 2_9 includes some or all of the following information: Block number Cell DTX / DRX indication

[0088] In various aspects of this embodiment, unless otherwise specified, the number of resource blocks (RBs) refers to the number of resource blocks in the frequency domain. Furthermore, resource block indices are assigned in ascending order from resource blocks mapped to the lower frequency domain to resource blocks mapped to the higher frequency domain. Furthermore, resource blocks are a general term for common resource blocks and physical resource blocks.

[0089] One physical channel may be mapped to one serving cell, and one physical channel may be mapped to one CBP configured for one carrier included in one serving cell.

[0090] One or more control resource sets (CORESETS) are assigned to the terminal device 1. The terminal device 1 monitors the PDCCH in one or more CORESETs.

[0091] The CORESET may indicate a time-frequency region to which one or more PDCCHs may be mapped. The CORESET may be a region in which the terminal device 1 monitors the PDCCH. The CORESET may be configured of continuous resources (localized resources). The CORESET may be configured of discontinuous resources (distributed resources).

[0092] In the frequency domain, the unit of mapping of CORESET may be a resource block (RB). For example, in the frequency domain, the unit of mapping of CORESET may be six resource blocks. That is, mapping of CORESET in the frequency domain may be performed using 6RBs×n (n is 1, 2, . . .). In the time domain, the unit of mapping of CORESET may be an OFDM symbol. For example, in the time domain, the unit of mapping of CORESET may be one OFDM symbol.

[0093] The frequency domain of the CORESET may be given based at least on higher layer signaling and / or DCI.

[0094] The time domain of the CORESET may be given based at least on higher layer signaling and / or DCI.

[0095] A certain CORESET may be a common CORESET. The common CORESET may be a CORESET that is set in common for a plurality of terminal devices 1. The common CORESET may be given based on at least some or all of the MIB, SIB, common RRC signaling, and cell ID. For example, the time resources and / or frequency resources of the CORESET that is set to monitor the PDCCH used for scheduling the SIB may be given based at least on the MIB.

[0096] A certain CORESET may be a dedicated CORESET. The dedicated CORESET may be a CORESET configured to be used exclusively for the terminal device 1. The dedicated CORESET may be provided based at least on dedicated RRC signaling.

[0097] The set of PDCCH candidates monitored by the terminal device 1 may be defined in terms of a search space, that is, the set of PDCCH candidates monitored by the terminal device 1 may be given by a search space.

[0098] The search space may be configured to include one or more PDCCH candidates of one or more aggregation levels (AL). The aggregation level of the PDCCH candidates may indicate the number of CCEs that constitute the PDCCH.

[0099] The terminal device 1 receives the data in a slot where DRX (Discontinuous reception) is not set. The terminal device 1 may monitor at least one or more search space sets. DRX may be provided based at least on parameters of a higher layer. The terminal device 1 may monitor at least one or more search space sets in slots where DRX is not set.

[0100] The search area set may be configured to include at least one or more search areas. The type of search space set is Type 0 PDCCH common search space, The search space may be any of a Type 0 APDCCH common search space, a Type 1 PDCCH common search space, a Type 2 PDCCH common search space, a Type 3 PDCCH common search space, and / or a UE dedicated PDCCH search space.

[0101] The Type 0 PDCCH common search space, the Type 0 APDCCH common search space, the Type 1 PDCCH common search space, the Type 2 PDCCH common search space, and the Type 3 PDCCH common search space may also be referred to as a Common Search Space (CSS). The H search space may also be referred to as a USS (UE specific search space).

[0102] Each search space set may be associated with one control resource set, each search space set may be included in at least one control resource set, and each search space set may be given an index of the control resource set associated with that search space set.

[0103] The upper layer parameter SearchSpace specifies one or more search spaces as a set. This SearchSpace may be used to search one or more The regions may be referred to as a search region set.

[0104] The type-0 PDCCH common search space may be used at least for DCI formats with a CRC (Cyclic Redundancy Check) sequence scrambled by SI-RNTI (System Information-Radio Network Temporary Identifier). The configuration of the type-0 PDCCH common search space may be based at least on the four least significant bits (LSBs) of the upper layer parameter PDCCH-ConfigSIB1. The upper layer parameter PDCCH-ConfigSIB1 may be included in the MIB. The configuration of the type-0 PDCCH common search space may be based at least on the upper layer parameter SearchSpaceZero. The interpretation of the bits of the upper layer parameter SearchSpaceZero may be the same as the interpretation of the four least significant bits of the upper layer parameter PDCCH-ConfigSIB1. The configuration of the type-0 PDCCH common search space may be based at least on the upper layer parameter SearchSpaceSIB1. The upper layer parameter SearchSpaceSIB1 may be included in the upper layer parameter PDCCH-ConfigCommon. The PDCCH detected in the Type-0 PDCCH common search space may be used at least for scheduling the PDSCH transmitted including SIB1. SIB1 is a type of SIB. SIB1 may include scheduling information of SIBs other than SIB1. The terminal device 1 may receive higher layer parameters PDCCH-ConfigCommon in EUTRA. The terminal device 1 may receive higher layer parameters PDCCH-ConfigCommon in MCG. These common search spaces may be referred to as a Type-0 PDCCH CSS set.

[0105] The Type 0 APDCCH common search space is a Cyclic Redundancy Check (CRC) scrambled by the System Information-Radio Network Temporary Identifier (SI-RNTI). The type 0a PDCCH common search space may be used at least for DCI formats with a SearchSpaceOtherSystemInformation sequence. The configuration of the type 0a PDCCH common search space may be based at least on the higher layer parameter SearchSpaceOtherSystemInformation. The higher layer parameter SearchSpaceOtherSystemInformation may be included in SIB1. The higher layer parameter SearchSpaceOtherSystemInformation may be included in the higher layer parameter PDCCH-ConfigCommon. The PDCCH detected in the type 0 PDCCH common search space may be used at least for scheduling of the PDSCH transmitted including SIBs other than SIB1. These common search spaces may be referred to as a Type 0 APDCCH CSS set.

[0106] The Type 1 PDCCH common search space is a CRC sequence scrambled by the Random Access-Radio Network Temporary Identifier (RA-RNTI) and / or a Temporary Common-Radio Network Temporary Identifier (TC-RNTI). The RA-RNTI may be used at least for a DCI format with a CRC sequence scrambled by the RA-RNTI. The RA-RNTI may be provided based at least on the time / frequency resources of the random access preamble transmitted by the terminal device 1. The TC-RNTI may be provided by a PDSCH (also referred to as a random access message 2, message 2 (Msg2) or random access response (RAR)) scheduled by a DCI format with a CRC sequence scrambled by the RA-RNTI. The Type 1 PDCCH common search space may be provided based at least on the higher layer parameter ra-SearchSpace. The higher layer parameter ra-SearchSpace may be included in SIB1. The higher layer parameter ra-SearchSpace may be included in the higher layer parameter PDCCH-ConfigCommon. These common search spaces may be referred to as a Type 1 PDCCH CSS set.

[0107] The Type 2 PDCCH common search space may be used for DCI formats with CRC sequences scrambled by a Paging-Radio Network Temporary Identifier (P-RNTI). The P-RNTI may be used at least for transmission of DCI formats including information indicating changes in the SIB. The Type 2 PDCCH common search space may be given based at least on a higher layer parameter PagingSearchSpace. Higher Layer The parameter PagingSearchSpace may be included in SIB1. The parameter PagingSearchSpace of the higher layer may be included in the parameter PDCCH-ConfigCommon of the higher layer. These common search spaces may be referred to as a Type 2 PDCCH CSS set.

[0108] The Type 3 PDCCH common search space is for DCI formats with CRC sequences scrambled by the Cell-Radio Network Temporary Identifier (C-RNTI). The C-RNTI may be provided based at least on a PDSCH (which may also be referred to as Random Access Message 4, Message 4 (Msg4) or Contention Resolution) scheduled by a DCI format with a CRC sequence scrambled by the TC-RNTI. The Type 3 PDCCH common search space may be a search space set provided when the higher layer parameter SearchSpaceType is set to common. These common search spaces may be referred to as a Type 3 PDCCH CSS set.

[0109] The UE-specific PDCCH search space may be used at least for DCI formats with CRC sequences scrambled by the C-RNTI. These UE-specific search spaces may be referred to as PDCCH sets.

[0110] When a C-RNTI is given to the terminal device 1, the Type 0 PDCCH common search space, the Type 0 APDCCH common search space, the Type 1 PDCCH common search space, and / or the Type 2 PDCCH common search space may be used at least for a DCI format with a CRC sequence scrambled with the C-RNTI.

[0111] When C-RNTI is given to the terminal device 1, the upper layer parameter PDCCH-ConfigSIB1, the upper layer parameter SearchSpaceZero, the upper layer parameter SearchSpaceSIB1, the upper layer parameter SearchSpaceOtherSystemInformation, the upper layer parameter ra-SearchSpace, A search space set given based at least on either the higher layer parameter PagingSearchSpace or the higher layer parameter SearchSpace may be used at least for a DCI format with a CRC sequence scrambled with a C-RNTI.

[0112] The common CORESET may include at least one or both of a CSS and a USS. The dedicated CORESET may include at least one or both of a CSS and a USS.

[0113] The physical resources of the search area are composed of control channel elements (CCEs). Each CCE is composed of six resource element groups (REGs). An REG may be composed of one OFDM symbol of one physical resource block (PRB). In other words, an REG may be composed of 12 resource elements (REs). A PRB may also be simply referred to as a resource block (RB).

[0114] The PDSCH is used at least to transmit TB, and may also be used at least to transmit Random Access Message 2 (RAR, Msg2), and may also be used at least to transmit system information including parameters used for initial access.

[0115] In Figure 1, the following downlink physical signals are used in downlink wireless communication: The downlink physical signals may not be used to transmit information output from higher layers, but are used by the physical layer. ·Synchronization signal ·DL DMRS(DownLink DeModulation Reference Signal) ·CSI-RS(Channel State Information-Reference Signal) ·DL PTRS(DownLink Phase Tracking Reference Signal) ·TRS(Tracking Reference Signal)

[0116] The synchronization signal is used for synchronization in the frequency domain and / or the time domain of the downlink by the terminal device 1. The synchronization signal includes a PSS (Primary Synchronization Signal) and an SSS (Secondary Synchronization Signal).

[0117] An SSB (SS / PBCH block) is configured to include at least some or all of the PSS, SSS, and PBCH. The antenna ports for some or all of the PSS, SSS, and PBCH included in the SS block may be the same. Some or all of the PSS, SSS, and PBCH included in the SSB may be mapped to consecutive OFDM symbols. The CP setting for some or all of the PSS, SSS, and PBCH included in the SSB may be the same. The same SCS setting μ may be applied to some or all of the PSS, SSS, and PBCH included in the SSB.

[0118] The DL DMRS is related to the transmission of the PBCH, PDCCH, and / or PDSCH. The DL DMRS is multiplexed onto the PBCH, PDCCH, and / or PDSCH. The terminal device 1 may use the DL DMRS corresponding to the PBCH, the PDCCH, or the PDSCH to perform propagation path correction for the PBCH, the PDCCH, or the PDSCH. Hereinafter, the transmission of the PBCH and the DL DMRS associated with the PBCH together may be referred to as the transmission of the PBCH. Furthermore, the transmission of the PDCCH and the DL DMRS associated with the PDCCH together will simply be referred to as the transmission of the PDCCH. In addition, transmission of a PDSCH and a DL DMRS associated with the PDSCH together may simply be referred to as transmission of a PDSCH. A DL DMRS associated with a PBCH may also be referred to as a DL DMRS for the PBCH. A DL DMRS associated with a PDSCH may also be referred to as a DL DMRS for the PDSCH. A DL DMRS associated with a PDCCH may also be referred to as a DL DMRS associated with the PDCCH.

[0119] The DL DMRS may be a reference signal that is individually configured for the terminal device 1. The sequence of the DL DMRS may be provided based at least on a parameter that is individually configured for the terminal device 1. The sequence of the DL DMRS may be provided based at least on a UE-specific value (e.g., C-RNTI, etc.). The DL DMRS may be transmitted individually for the PDCCH and / or the PDSCH.

[0120] The CSI-RS may be a signal at least used to calculate the CSI. The CSI-RS may also be used to measure Reference Signal Received Power (RSRP) and Reference Signal Received Quality (RSRQ). The CSI-RS pattern assumed by the terminal device 1 may be given by at least a parameter of a higher layer.

[0121] The PTRS may be a signal that is used at least for phase noise compensation. The PTRS pattern assumed by the terminal device 1 may be based at least on higher layer parameters and / or DCI.

[0122] A DL PTRS may be associated with a DL DMRS group that includes at least the antenna ports used for one or more DL DMRSs. The association of a DL PTRS with a DL DMRS group may be such that the antenna ports of the DL PTRS and some or all of the antenna ports included in the DL DMRS group are at least QCL. The DL DMRS group may be identified based at least on the antenna port with the smallest index among the DL DMRSs included in the DL DMRS group.

[0123] The TRS may be a signal used at least for time and / or frequency synchronization. The pattern of the TRS assumed by the terminal device may be based at least on higher layer parameters and / or DCI.

[0124] The downlink physical channel and the downlink physical signal may also be referred to as a downlink signal. The uplink physical channel and the uplink physical signal may also be referred to as an uplink signal. The downlink signal and the uplink signal may be collectively referred to as a physical signal or a signal. The downlink physical channel and the uplink physical channel may also be collectively referred to as a physical channel. In the downlink, the physical signal may include some or all of SSB, PDCCH (CORESET), PDSCH, DL DMRS, CSI-RS, DL PTRS, and TRS. In the uplink, the physical signal may include some or all of PRACH, PUCCH, PUSCH, UL DMRS, UL PTRS, and SRS. The physical signal may be a signal other than the above-mentioned signals. That is, the physical signal may include one or more types of physical channels and / or physical signals, or may include one or more physical channels and / or physical signals.

[0125] The BCH (Broadcast CHannel), UL-SCH (Uplink-Shared CHannel), and DL-SCH (Downlink-Shared CHannel) are transport channels. A channel used in the MAC layer may be called a transport channel. The unit of the transport channel used in the MAC layer may be called a TB or MAC PDU. HARQ control is performed for each TB in the MAC layer. A TB is a The TB is the unit of data that the layer delivers to the physical layer. The modulation process is performed for each codeword.

[0126] The base station device 3 and the terminal device 1 exchange (transmit and receive) higher layer signals in a higher layer. For example, the base station device 3 and the terminal device 1 may transmit and receive RRC signaling (RRC messages, RRC information, RRC parameters, RRC information elements) in a radio resource control (RRC) layer. The base station device 3 and the terminal device 1 may also transmit and receive MAC CEs (Control Elements) in a MAC layer. Here, the RRC signaling The ring and / or MAC CE are also referred to as higher layer signaling.

[0127] The PUSCH and the PDSCH may be used at least for transmitting RRC signaling and / or MAC CE. Here, the RRC signaling transmitted by the base station device 3 on the PDSCH may be signaling common to multiple terminal devices 1 in the serving cell. The signaling common to multiple terminal devices 1 in the serving cell may also be referred to as common RRC signaling. The RRC signaling transmitted by the base station device 3 on the PDSCH may be signaling dedicated to a certain terminal device 1 (which may also be referred to as dedicated signaling or UE specific signaling). The signaling dedicated to a terminal device 1 may also be referred to as dedicated RRC signaling. Upper layer parameters specific to a serving cell may be transmitted using signaling common to multiple terminal devices 1 in the serving cell or signaling dedicated to a certain terminal device 1. Upper layer parameters specific to a UE may be transmitted using signaling dedicated to a certain terminal device 1.

[0128] BCCH (Broadcast Control CHannel), CCCH (Common Control CHannel), And DCCH (Dedicated Control CHannel) is a logical channel. For example, The BCCH is a higher layer channel used for transmitting the MIB. Also, the CCCH (Common Control CHannel) is a higher layer channel used for transmitting information common to a plurality of terminal devices 1. Here, the CCCH may be used, for example, for terminal devices 1 that are not RRC connected. Also, the DCCH (Dedicated Control CHannel) is a higher layer channel that is used at least for transmitting dedicated control information to the terminal device 1. Here, the DCCH may be used, for example, for terminal devices 1 that are RRC connected.

[0129] The BCCH in the logical channel may be mapped to the BCH, DL-SCH, or UL-SCH in the transport channel. The CCCH in the logical channel may be mapped to the DL-SCH or UL-SCH in the transport channel. The DCCH in the logical channel may be mapped to the DL-SCH or UL-SCH in the transport channel.

[0130] The UL-SCH in the transport channel may be mapped to the PUSCH in the physical channel, the DL-SCH in the transport channel may be mapped to the PDSCH in the physical channel, and the BCH in the transport channel may be mapped to the PBCH in the physical channel.

[0131] An example of the configuration of the terminal device 1 according to one aspect of this embodiment will be described below.

[0132] 4 is a schematic block diagram showing the configuration of a terminal device 1 according to one aspect of the present embodiment. As shown in the figure, the terminal device 1 includes a radio transmission / reception unit 10 and an upper layer processing unit 14. The wireless transmission / reception unit 10 includes an antenna unit 11, an RF (Radio Frequency) unit 12, and and a part or all of a baseband unit 13. The upper layer processing unit 14 is configured to include at least a medium access control layer processing unit 15 and a part or all of a radio resource control layer processing unit 16. The radio transceiver unit 10 may also be referred to as a transmitter, a receiver, a physical layer processing unit, and / or a lower layer processing unit.

[0133] The upper layer processing unit 14 outputs uplink data (TB, UL-SCH) generated by user operation or the like to the wireless transceiver unit 10. The upper layer processing unit 14 performs processing of the MAC layer, the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer, and the RRC layer.

[0134] The medium access control layer processing unit 15 included in the upper layer processing unit 14 performs processing of the MAC layer.

[0135] The radio resource control layer processing unit 16 included in the upper layer processing unit 14 performs processing of the RRC layer. The radio resource control layer processing unit 16 manages various setting information / parameters of its own device. The radio resource control layer processing unit 16 sets various setting information / parameters based on upper layer signals received from the base station device 3. That is, the radio resource control layer processing unit 16 sets various setting information / parameters based on information indicating the various setting information / parameters received from the base station device 3. The parameters may be upper layer parameters and / or information elements.

[0136] The wireless transceiver 10 performs physical layer processing such as modulation, demodulation, encoding, and decoding. The wireless transceiver 10 separates, demodulates, and decodes the received physical signal, and outputs the decoded information to the upper layer processing unit 14. These processes may be referred to as reception processing. The wireless transceiver 10 generates a physical signal (uplink signal) by modulating and encoding data and generating a baseband signal (converting it into a time-continuous signal), and transmits the physical signal to the base station device 3. These processes may be referred to as transmission processing.

[0137] The RF unit 12 converts (down-converts) the signal received via the antenna unit 11 into a baseband signal by quadrature demodulation and removes unnecessary frequency components. The RF unit 12 outputs the processed analog signal to the baseband unit.

[0138] The baseband unit 13 converts the analog signal input from the RF unit 12 into a digital signal. The baseband unit 13 removes the portion corresponding to the CP from the converted digital signal, and performs a fast Fourier transform (FFT) on the signal from which the CP has been removed to extract a signal in the frequency domain.

[0139] The baseband unit 13 performs an inverse fast Fourier transform (IFFT) on the data to generate OFDM symbols, adds CPs to the generated OFDM symbols, generates baseband digital signals, and converts the baseband digital signals into analog signals. The baseband unit 13 outputs the converted analog signals to the RF unit 12.

[0140] The RF unit 12 uses a low-pass filter to remove unnecessary frequency components from the analog signal input from the baseband unit 13, up-converts the analog signal to a carrier frequency, and transmits it via the antenna unit 11. The RF unit 12 also amplifies power. The RF unit 12 may also have a function to control transmission power. The RF unit 12 is also referred to as a transmission power control unit.

[0141] An example of the configuration of the base station device 3 according to one aspect of this embodiment will be described below.

[0142] 5 is a schematic block diagram showing the configuration of a base station device 3 according to one aspect of the present embodiment. As shown in the figure, the base station device 3 includes a radio transmission / reception unit 30 and an upper layer processing unit 34. The radio transmission / reception unit 30 includes an antenna unit 31, an RF unit 32, and a baseband unit 33. The upper layer processing unit 34 includes a medium access control layer processing unit 35 and a radio resource control layer processing unit 36. The radio transmission / reception unit 30 is also referred to as a transmitter, a receiver, or a physical layer processing unit.

[0143] The upper layer processing unit 34 performs processing for the MAC layer, the PDCP layer, the RLC layer, and the RRC layer.

[0144] The medium access control layer processing unit 35 included in the upper layer processing unit 34 performs MAC layer processing.

[0145] The radio resource control layer processing unit 36 ​​included in the upper layer processing unit 34 performs processing of the RRC layer. The radio resource control layer processing unit 36 ​​generates downlink data (TB, DL-SCH) to be allocated to the PDSCH, system information, RRC messages, MAC CE, etc., or acquires them from an upper node, and outputs them to the radio transceiver unit 30. The radio resource control layer processing unit 36 ​​also manages various setting information / parameters for each terminal device 1. The radio resource control layer processing unit 36 ​​may set various setting information / parameters for each terminal device 1 via signals from the upper layer. That is, the radio resource control layer processing unit 36 ​​transmits / reports information indicating the various setting information / parameters.

[0146] The basic functions of the wireless transceiver 30 are the same as those of the wireless transceiver 10, and therefore description thereof will be omitted. The wireless transceiver 30 transmits a physical signal generated in the wireless transceiver 30 to the terminal device 1 (i.e., performs transmission processing). The wireless transceiver 30 also performs reception processing on the received physical signal.

[0147] The medium access control layer processing units 15 and / or 35 may be referred to as MAC entities.

[0148] Each of the units labeled 10 to 16 included in the terminal device 1 may be configured as a circuit. Each of the units labeled 30 to 36 included in the base station device 3 may be configured as a circuit. Some or all of the units labeled 10 to 16 included in the terminal device 1 may be configured as a memory and a processor connected to the memory. Some or all of the units labeled 30 to 36 included in the base station device 3 may be configured as a memory and a processor connected to the memory. Various aspects (operations, processing) according to this embodiment may be realized (performed) in a memory included in the terminal device 1 and / or the base station device 3 and a processor connected to the memory.

[0149] In Carrier Aggregation (CA), two or more Component Carriers (CCs) are aggregated. A UE can receive signals simultaneously on one or multiple CCs, depending on its capabilities. A UE with one timing advance capability for CA may simultaneously receive and / or transmit on multiple CCs corresponding to multiple serving cells sharing the same timing advance (multiple serving cells grouped into one TAG). A UE with multiple timing advance capabilities for CA may simultaneously receive and / or transmit on multiple CCs corresponding to multiple serving cells with different timing advances (multiple serving cells grouped into multiple TAGs). A UE may simultaneously receive and / or transmit on multiple CCs corresponding to one serving cell (one serving cell). The NG-RAN ensures that each TAG contains at least one serving cell. A UE that does not support CA receives on one CC and transmits on one serving cell (one serving cell). It may be transmitted on one CC corresponding to only one serving cell in the TAG.

[0150] When CA is configured, the UE has only one RRC connection with the network. During RC connection establishment / re-establishment / handover, one serving cell is responsible for NAS mobility. provides information and RRC connection re-establishment / handover requires one serving cell to provide security. This cell is called the Primary Cell (PCell). UE Capabilities According to [RFC1111], Secondary Cells (SCells) may be configured to form a set of serving cells with a PCell. The set of serving cells configured for a UE consists of one PCell and one or more SCells. Reconfiguration, addition, and deletion of SCells is performed by RRC. In the case of Intra-NR handover and connection resumption from RRC_INACTIVE, the network may also add, remove, retain, or reconfigure SCells for use with the target PCell. When adding a new SCell, dedicated RRC signaling is used to transmit all system information required for the SCell. That is, while in connected mode, the UE does not need to obtain broadcast system information directly from the SCell.

[0151] RRC supports the states RRC_IDLE, RRC_INACTIVE, and RRC_CONNECTED. You may also use it.

[0152] SSB may be classified into Always-on SSB and On-demand SSB. In Always-on SSB, SSB may be periodically transmitted from the base station device. In On-demand SSB, SSB transmission is requested. When the SSB is set to 0, the base station device may transmit the SSB. , and may be referred to as SSB without distinction.

[0153] On-demand SSB transmission requests are sent using the UE WUS (uplink wake-up signal). Alternatively, cell on / off indication via the backhaul may be used, or cell activation / deactivation signaling may be used. The method for requesting transmission of an SSB may be called a triggering method. SSB Transmission in On-Demand SSB The request may be referred to as an SSB transmission request, a request for an SS / PBCH block, an SSB trigger, or an on-demand SSB trigger. On-demand SSB may be an operation on an SCell.

[0154] The SSB transmission (SSB burst) triggered by the on-demand SSB on the SCell may operate as follows: The UE determines that the on-demand SSB is periodically transmitted from a first timing. The UE may assume that the on-demand SSB is periodically transmitted from the first timing until the gNB turns off the transmission of the on-demand SSB. On-demand SSB is transmitted between the timing and the second timing, and from the second timing onwards The UE may assume that no further on-demand SSBs will be transmitted after the first timing. On-demand SSB is transmitted N times, and after N On-demand SSBs are transmitted, The UE may assume that on-demand SSBs are periodically transmitted between the first timing and the second timing, and that on-demand SSBs are not transmitted in other transmission periods after the second timing. It may be assumed that SSBs are transmitted, and that an SSB transmission (SSB burst) may include one or more SS / PBCH blocks.

[0155] In a cell that supports On-demand SSB in an SCell, Always-on SSB is no longer transmitted. In a cell that supports on-demand SSB in an SCell, always-on SSB may be transmitted periodically.

[0156] In this embodiment, the wireless transceiver 10 may be configured to include a wireless receiving unit, a wireless transmitting unit, and a processing unit. For example, the wireless receiving unit may perform signal reception processing, and the wireless transmitting unit may perform signal transmission processing. For example, the processing unit may determine or set information, and the processing unit may include processing in the upper layer processing unit 14.

[0157] Fig. 6 is a diagram showing an example of processing by a terminal device according to this embodiment. Fig. 6 shows an example in which a first cell and a second cell form a CG, and the terminal device 1 communicates with a base station device 3. For example, the first cell may be a PCell, and the second cell may be an SCell, and the second cell may be one or more SCells. The first cell may be a serving cell identified based at least on a cell ID acquired from an SSB during initial connection. The second cell may be a serving cell used in carrier aggregation.

[0158] In FIG. 6, the terminal device transmits on-demand SSB periodically from the first timing. It may be assumed that

[0159] In FIG. 6, the timing of the process of S601 may be defined as the third timing, the timing of the process of S602 as the fourth timing, and the timing of the process of S603 as the first timing. The third timing may be the timing when an SSB used in On-demand SSB is set. The fourth timing may be the timing when an SSB transmission request is made. The first timing may be the timing when the first on-demand SSB is transmitted from the base station apparatus to the terminal apparatus. The first timing may be the timing at which the terminal device receives the first SS / PBCH block. The second timing may be the timing when the base station apparatus receives the last on-demand SSB. The first timing may be the timing when the base station device finishes receiving the SS / PBCH block, or the timing when the terminal device receives the last SS / PBCH block. Between the first timing and the second timing, the on-demand SSBs transmitted from the base station device may be transmitted at the same cycle.

[0160] Before S601, the terminal device 1 establishes an initial connection with the base station device 3, and the terminal device 1 is in a state where the RRC connection with the base station device 3 is completed (RRC_CONNECTED). Before 1, the terminal device 1 recognizes the existence of the second cell and determines that the second cell is an on-demand SSB. It is assumed that the cell is recognized as being compatible for transmission.

[0161] In S601, the terminal device receives information regarding the settings of SSBs used in on-demand SSBs. The information regarding the settings of on-demand SSBs may include some or all of the following: the transmission cycle of on-demand SSBs, information indicating the transmission duration of on-demand SSBs, information indicating whether to stop transmission of on-demand SSBs, and information regarding when to change the transmission cycle of on-demand SSBs. The information indicating the transmission duration of on-demand SSBs is information regarding the timing for receiving SS / PBCH blocks. This information may be:

[0162] The SSB settings used in On-demand SSB may include the SSB transmission cycle. On-demand SSB is actually started after an SSB transmission request is made according to the procedure in S602 described below. The terminal device may receive the on-demand SSB based on the period set in accordance with this procedure.

[0163] The SSB transmission period is the SSB transmission start timing and SSB transmission end timing. The SSB transmission start timing may be information relating to the timing for the terminal device to receive the SS / PBCH block. The SSB transmission end timing may be information relating to the timing for the terminal device to end reception of the SS / PBCH block.

[0164] The timing to start transmitting SSB depends on the frame number, subframe number, slot number, and OFDM The start timing of the SSB may be a symbol number or an SSB index. The start timing of the SSB may be a relative time. For example, the relative time may be a time indicating whether or not to transmit an SS / PBCH block. It should be defined as information indicating the relative time from the timing of reception (fourth timing). Also, information indicating relative time is frame number, subframe number, slot number, OFDM symbol number, number of frames, number of subframes, number of slots, number of OFDM symbols, SSB It may be defined by an index.

[0165] The timing at which the SSB transmission starts may be referred to as the first timing. In this case, the timing at which the first On-demand SSB is received is defined as the first timing. In addition, the timing to start SSB transmission may be selected from the candidate times defined in advance in the specifications. The distance may be based on the distance between the target and the target location.

[0166] The timing to start transmission of SSB may be determined based on the subcarrier spacing.

[0167] The slot number and / or number of slots at the start of SSB transmission is The subcarrier spacing of the first cell may be determined based on the subcarrier spacing of the first cell. For example, If the timing of the first cell is the mth slot on the active DL BWP of the first cell, The timing when the on-demand SSB is first transmitted from the station equipment to the terminal equipment connected to the second cell The second cell's active DL BWP is the m+d-th slot, where d is the time gap value, and d may be set based on the number of slots. d may be set based on the subcarrier spacing of the first cell. d may increase as the subcarrier spacing increases. d may be proportional to the subcarrier spacing. For example, When the subcarrier spacing is 15 kHz, d may be 3 slots, when the subcarrier spacing is 30 kHz, d may be 6 slots, and when the subcarrier spacing is 60 kHz, d may be 9 slots. The cell may be a base station device that sets a transmission request for SSB, or a primary cell. The second cell may be a secondary cell.

[0168] The SSB transmission end timing may be a frame number, a subframe number, a slot number, an OFDM symbol number, or an SSB index. The SSB transmission end timing is a relative For example, the relative time may indicate whether or not to transmit an SS / PBCH block. The information may be defined as a relative time from the timing of receiving the information (fourth timing). For example, the relative time may be defined as a relative time from the timing of starting transmission of the SSB (first timing). The information indicating the relative time may be defined by a frame number, a subframe number, a slot number, an OFDM symbol number, the number of frames, the number of subframes, the number of slots, the number of OFDM symbols, or an SSB index.

[0169] The timing for ending SSB transmission may be set using the number of times the SSB is transmitted. For example, the number of times the SSB is transmitted may be included in information indicating the transmission period of the on-demand SSB or information indicating whether to stop the on-demand SSB transmission. For example, if the number of times the SSB is transmitted is four, the SSB is transmitted four times between the first timing and the second timing.

[0170] The SSB transmission end timing may be referred to as the second timing. In this case, the timing of receiving the last On-demand SSB can be defined as the second timing. In addition, the timing to end SSB transmission is determined based on the candidate time points defined in the specifications. It may also be based on placement.

[0171] The SSB transmission end timing may be determined based on the subcarrier spacing. The slot number and / or the number of slots at the SSB transmission end timing may be determined based on the subcarrier spacing of the first cell. The method of determining the SSB transmission end timing based on the subcarrier spacing of the first cell may be the same as the method for determining the SSB transmission start timing.

[0172] If the information indicating whether to stop transmission of on-demand SSB indicates that transmission of on-demand SSB is to be stopped, transmission of on-demand SSB is stopped at the second timing. The information indicating whether to stop SSB transmission indicates that on-demand SSB transmission will be stopped, and When a transmission cycle is set after timing 1, on-demand SSB is transmitted periodically between timing 1 and timing 2, and on-demand SSB is transmitted at another transmission cycle after timing 2. In this case, the transmission of on-demand SSB after timing 2 is The transmission cycle may be set by information for changing the transmission cycle of on-demand SSB.

[0173] S601 may be performed at a timing different from the timing at which the SSB used in Always-on SSB is configured.

[0174] S601 may be performed at the same time as the SSB settings used in Always-on SSB. The settings related to the SSB used in On-demand SSB may be the same as some or all of the settings related to the SSB used in Always-on SSB. On-demand SSB The settings related to SSB used in On-demand SSB may be set in the same way as the settings related to Always-on SSB. For example, the settings related to SSB used in On-demand SSB may be set in the same IE as the settings related to SSB used in Always-on SSB, or may be set in an IE different from the IE for Always-on SSB. .

[0175] In S602, the terminal device receives information indicating whether or not to transmit on-demand SSB. do.

[0176] In S602, the terminal device may request the SS / PBCH block of the secondary cell using an uplink channel or signal. The uplink channel may be a PUSCH, a PUCCH, or a PRACH. The uplink signal may be an SRS. Also, the MAC CE may be used. The terminal device may also use the primary cell to request an SS / PBCH block of the secondary cell.

[0177] In addition, in S602, the base station apparatus may transmit information to activate a cell (for example, a secondary cell) to the terminal apparatus, thereby transmitting an on-demand SSB. In 602, the base station apparatus may transmit information to the terminal apparatus to turn on (make available) a cell (for example, a secondary cell), thereby transmitting an on-demand SSB. In addition, the base station apparatus transmits information to activate a cell (for example, a secondary cell) to the terminal apparatus using the primary cell, thereby transmitting on-demand SSB. That's fine.

[0178] In S603, the terminal device receives the on-demand SSB transmitted from the base station device. On-demand SSB is transmitted periodically at the transmission cycle set in the On-demand SSB transmission cycle. can be.

[0179] In S603, the terminal device receives a response (e.g., ACK, PDCCH) to a signal requesting an SSB of a secondary cell using an uplink channel or signal from the base station device. After receiving the response, the receiving station may start receiving the on-demand SSB. The SSB reception timing may be defined in the specifications or may be set in advance in the RRC layer, etc. It may be included in the On-demand SSB settings.

[0180] In S603, the terminal device may start receiving SSBs at the timing of the first SSB after X slots from the timing at which the terminal device correctly receives information about the activation of a cell (e.g., a secondary cell). Information about the activation of a cell (e.g., a secondary cell) may be received by MAC CE or by system information (SI). It may also be received by PDCCH or PDSCH. Note that although the SSB reception timing is defined by the number of slots, it may also be defined by seconds or symbols. This may additionally or alternatively be implemented with other time position indicating information such as a number.

[0181] In S603, the terminal device may start receiving SSBs at the timing of the first SSB after X slots from the timing at which the terminal device correctly receives information about the cell (e.g., secondary cell) being on. The information about the cell (e.g., secondary cell) being on may be received by MAC CE, or may be received by PDCCH or PDSCH. Note that the SSB reception timing is determined by the number of slots. Although timing is defined, it may additionally or alternatively be implemented using other time position information such as seconds or number of symbols.

[0182] FIG. 7 is a diagram showing an example of processing by the base station device according to this embodiment. Here, differences between FIG. 6 and FIG. 7 will be mainly explained. In FIG. 7, on-demand SSB is transmitted from the first timing. It may be transmitted periodically.

[0183] In step S701, the base station device sets information related to the configuration of SSBs used in on-demand SSBs. For example, the base station device sets up SSBs by transmitting an RRC message including information about SSBs to the terminal device.

[0184] In S702, the base station device sets information indicating whether to transmit an on-demand SSB. For example, the base station device may transmit an RRC message including information indicating whether to transmit an SSB to the terminal device. Alternatively, the base station device may set information indicating whether to transmit an on-demand SSB using the method described in S602.

[0185] In S703, the base station apparatus transmits an on-demand SSB to the terminal apparatus. The on-demand SSB is set based on the information set in S701 and S702, and is transmitted periodically.

[0186] FIG. 8 is a diagram showing an example of processing by a terminal device according to this embodiment. Here, differences between FIG. 6 and FIG. 8 will be mainly described. In FIG. 8, the terminal device may assume that an on-demand SSB is transmitted between a first timing and a second timing, and that no on-demand SSB is transmitted after the second timing. The method of determining the second timing may be based on a setting in the base station device for turning off transmission of on-demand SSBs, or may be based on information indicating whether or not to stop transmission of on-demand SSBs set in S601.

[0187] In S801, the terminal device receives the last on-demand SSB transmitted from the base station device. The timing of the process in S801 may be defined as the second timing.

[0188] Fig. 9 is a diagram showing an example of processing by the base station apparatus according to this embodiment. Here, differences between Fig. 7 and Fig. 9 will be mainly explained. In Fig. 9, an on-demand SSB is transmitted between the first timing and the second timing, and an on-demand SSB does not need to be transmitted after the second timing.

[0189] In S901, the base station device transmits the last on-demand SSB to the terminal device. The on-demand SSB may be set based on the information set in S701 and S702.

[0190] FIG. 10 is a diagram showing an example of processing of the terminal device according to this embodiment. Here, differences between FIG. 8 and FIG. 10 will be mainly explained. In FIG. 10, the terminal device periodically transmits on-demand SSBs between the first timing and the second timing, and after the second timing, It may also be assumed that on-demand SSBs are transmitted at other transmission intervals.

[0191] In S1001, the terminal device receives SSBs with different transmission periods from the base station device. Here, the different transmission period is different from the transmission period of the On-demand SSB received in S603. The different transmission periods are set by the information indicating the transmission period of the On-demand SSB. That's fine.

[0192] FIG. 11 is a diagram showing an example of processing by the base station apparatus according to this embodiment. Here, differences between FIG. 9 and FIG. 11 will be mainly explained. In FIG. 11, on-demand SSBs are periodically transmitted between the first timing and the second timing, and other transmissions are performed after the second timing. On-demand SSB is transmitted in the communication cycle.

[0193] In step S1101, the base station device transmits SSBs with different transmission cycles to the terminal device. The transmission period may be set by information indicating the transmission period of the on-demand SSB.

[0194] The base station device 3 according to the present invention and the program running on the terminal device 1 are configured to execute a central processing unit (CPU) or the like so as to realize the functions of the above-described embodiment according to the present invention. The information handled by these devices is temporarily stored in RAM (Random Access Memory) during processing, and then written to various ROMs such as Flash ROM (Read Only Memory) and H It is stored in a DD (Hard Disk Drive) and is read by the CPU as needed, and can be modified or written. The writing is performed.

[0195] Note that the terminal device 1 and part of the base station device 3 in the above-described embodiment may be realized by a computer. In this case, a program for realizing this control function may be recorded on a computer-readable recording medium, and the program recorded on this recording medium may be read into a computer system and executed to realize the control function.

[0196] The term "computer system" used here refers to a computer system built into the terminal device 1 or base station device 3, and includes hardware such as an OS and peripheral devices. Also, the term "computer-readable recording medium" refers to portable media such as flexible disks, optical magnetic disks, ROMs, and CD-ROMs, as well as storage devices such as hard disks built into the computer system.

[0197] Furthermore, the term "computer-readable recording medium" may include a medium that dynamically stores a program for a short period of time, such as a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line, or a medium that stores a program for a certain period of time, such as a volatile memory within a computer system that serves as a server or client in such a case. The program may also be one that realizes part of the above-mentioned functions, or one that can realize the above-mentioned functions in combination with a program already recorded in the computer system.

[0198] Furthermore, the base station device 3 in the above-described embodiment can also be realized as a collection (device group) consisting of multiple devices. Each of the devices constituting the device group may have some or all of the functions or functional blocks of the base station device 3 according to the above-described embodiment. It is sufficient for the device group to have all of the functions or functional blocks of the base station device 3. Furthermore, the terminal device 1 according to the above-described embodiment can also communicate with the base station device as a collection.

[0199] Furthermore, the base station device 3 in the above-described embodiment may be an EUTRAN (Evolved Universal Terrestrial Radio Access Network) and / or an NG-RAN (NextGen RAN, NR RAN). and / or may have some or all of the functionality of an upper node for the gNB.

[0200] Furthermore, some or all of the terminal device 1 and base station device 3 in the above-described embodiments may be realized as an LSI, which is typically an integrated circuit, or as a chipset. Each functional block of the terminal device 1 and base station device 3 may be individually formed into a chip, or some or all of them may be integrated into a chip. Furthermore, the integrated circuit method is not limited to LSI, and may be realized using a dedicated circuit or a general-purpose processor. Furthermore, if an integrated circuit technology that can replace LSI emerges due to advances in semiconductor technology, it is also possible to use an integrated circuit based on that technology.

[0201] Furthermore, in the above-described embodiment, a terminal device is described as an example of a communication device, but the present invention is not limited to this and can also be applied to terminal devices or communication devices such as stationary or non-movable electronic devices installed indoors or outdoors, for example, AV equipment, kitchen equipment, cleaning / washing equipment, air conditioning equipment, office equipment, vending machines, and other household appliances.

[0202] Although the embodiments of the present invention have been described in detail above with reference to the drawings, the specific configuration is not limited to this embodiment and includes design modifications within the scope of the gist of the present invention. Furthermore, the present invention is susceptible to various modifications within the scope of the claims, and embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of the present invention. Furthermore, configurations in which elements described in the above embodiments are substituted with elements that achieve the same effect are also included. [Explanation of symbols]

[0203] 1(1A, 1B, 1C) Terminal equipment 3 Base station equipment 10, 30 Radio transmitter / receiver 11, 31 Antenna section 12, 32 RF section 13, 33 Baseband section 14, 34 Upper layer processing unit 15, 35 Medium access control layer processing unit 16, 36 Radio resource control layer processing unit

Claims

1. A terminal device that communicates with a base station device using a primary cell and at least one secondary cell, an upper layer processing unit that receives information regarding timing for receiving an SS / PBCH block and information regarding timing for ending reception of the SS / PBCH block; a radio receiving unit for receiving an SS / PBCH block; the SS / PBCH block is an SS / PBCH block transmitted based on information about timing for receiving the SS / PBCH block; determining a timing for receiving the SS / PBCH block based on information indicating whether to transmit the SS / PBCH block; The timing for terminating reception of the SS / PBCH block is determined based on information indicating whether or not to stop transmission of the SS / PBCH block. Terminal device.

2. The information about the timing for ending reception of the SS / PBCH block is given by slot number Indicated by the number, The terminal device according to claim 1 .

3. The information regarding the timing for terminating reception of the SS / PBCH block is defined by information indicating a relative time from a timing for receiving information indicating whether or not to transmit the SS / PBCH block; The information indicating the relative time is indicated by a number of slots, a number of subframes, or a number of frames. The terminal device according to claim 1 .

4. The terminal device further includes a transmitter for transmitting an uplink channel or a signal; The transmitter transmits an SS / PBCH of a secondary cell using an uplink channel or signal. Request a block, The timing at which the terminal device receives the information indicating whether or not to transmit the SS / PBCH block is The timing at which the device receives a response to the The terminal device according to claim 1 .

5. The timing of receiving the information indicating whether or not to transmit the SS / PBCH block is determined by the base station. The timing is when information to activate the secondary cell or turn on the secondary cell transmitted from the station device is received. The terminal device according to claim 1 .

6. The number of slots is calculated based on a subcarrier spacing of a primary cell. The terminal device according to claim 3.

7. A base station device that communicates with a terminal device using a primary cell and at least one secondary cell, an upper layer processing unit that transmits information regarding timing for receiving an SS / PBCH block and information regarding timing for ending reception of the SS / PBCH block; a radio transmitter that transmits the SS / PBCH block; the SS / PBCH block is an SS / PBCH block transmitted based on information about timing for receiving the SS / PBCH block; determining a timing for receiving the SS / PBCH block based on information indicating whether to transmit the SS / PBCH block; The timing for terminating reception of the SS / PBCH block is determined based on information indicating whether or not to stop transmission of the SS / PBCH block. Base station equipment.

8. A communication method for a terminal device that communicates with a base station device using a primary cell and at least one secondary cell, comprising: receiving information regarding timing for receiving an SS / PBCH block and information regarding timing for terminating reception of the SS / PBCH block and the SS / PBCH block; the SS / PBCH block is an SS / PBCH block transmitted based on information about timing for receiving the SS / PBCH block; determining a timing for receiving the SS / PBCH block based on information indicating whether to transmit the SS / PBCH block; The timing for terminating reception of the SS / PBCH block is determined based on information indicating whether or not to stop transmission of the SS / PBCH block. Communication method.

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