Terminal device, base station device, and communication method

Abstract

This terminal apparatus receives a first block in which PSS, SSS, first PBCH, and first DMRS are mapped, receives a second block in which second PBCH and second DMRS are mapped with a resource different from that of the first block, and acquires first bit information of a first transport block. The first PBCH carries a bit stream including the first bit information and second bit information. The second PBCH carries a bit stream including the first bit information and third bit information.

Description

Technical Field

[0001] The present invention relates to a terminal device, a base station device, and a communication method. This application claims priority to Japanese Patent Application No. 2020-23359 filed in Japan on February 14, 2020, the content of which is incorporated herein by reference.

Background Art

[0002] Currently, as a radio access method and radio network technology for the fifth-generation cellular system, in the Third Generation Partnership Project (3GPP), technical studies and standardization of LTE (Long Term Evolution)-Advanced Pro and NR (New Radio technology) are being carried out (Non-Patent Document 1).

[0003] In the fifth-generation cellular system, three service assumed scenarios are required: eMBB (enhanced Mobile BroadBand) for realizing high-speed and large-capacity transmission, URLLC (Ultra-Reliable and Low Latency Communication) for realizing low-latency and high-reliability communication, and mMTC (massive Machine Type Communication) for connecting a large number of machine-type devices such as IoT (Internet of Things). Furthermore, in Release 17, which is a future release of NR, applications such as sensor networks, surveillance cameras, and / or wearable devices are assumed, and reduced capability NR devices are being studied to reduce costs and extend battery life while not requiring high requirements such as eMBB and URLLC (Non-Patent Document 2).

Prior Art Documents

Non-Patent Documents

[0004]

Non-Patent Document 1

Non-Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] An object of the present invention is to provide a terminal device, a base station device, and a communication method that enable efficient communication in the wireless communication system as described above.

Means for Solving the Problems

[0006] (1) To achieve the above object, an aspect of the present invention takes the following means. That is, a terminal device in one aspect of the present invention includes a receiving unit that receives a first block to which a PSS, an SSS, a first PBCH, and a first DMRS are mapped, and receives a second block to which a second PBCH and a second DMRS are mapped in a resource different from the first block, and a processing unit that acquires first bit information of a first transport block. The first PBCH carries a bit string including the first bit information and second bit information, and the second PBCH carries a bit string including the first bit information and third bit information.

[0007] (2) Further, the base station device according to one aspect of the present invention transmits a first block to which PSS, SSS, a first PBCH, and a first DMRS are mapped, and transmits a second block to which a second PBCH and a second DMRS are mapped in a resource different from the first block, and includes a processing unit that generates first bit information of a first transport block, wherein the first PBCH carries a bit sequence including the first bit information and second bit information, and the second PBCH carries a bit sequence including the first bit information and third bit information.

[0008] (3) Further, a communication method according to one aspect of the present invention is a communication method of a terminal device, which receives a first block to which PSS, SSS, a first PBCH, and a first DMRS are mapped, receives a second block to which a second PBCH and a second DMRS are mapped in a resource different from the first block, obtains first bit information of a first transport block, wherein the first PBCH carries a bit sequence including the first bit information and second bit information, and the second PBCH carries a bit sequence including the first bit information and third bit information.

[0009] (4) Further, a communication method according to one aspect of the present invention is a communication method of a base station device, which transmits a first block to which PSS, SSS, a first PBCH, and a first DMRS are mapped, transmits a second block to which a second PBCH and a second DMRS are mapped in a resource different from the first block, generates first bit information of a first transport block, wherein the first PBCH carries a bit sequence including the first bit information and second bit information, and the second PBCH carries a bit sequence including the first bit information and third bit information.

Advantages of the Invention

[0010] According to one aspect of this invention, the terminal device and the base station device can communicate efficiently.

Brief Description of the Drawings

[0011]

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Embodiments for Carrying Out the Invention

[0012] Hereinafter, embodiments of the present invention will be described.

[0013] FIG. 1 is a conceptual diagram of a wireless communication system in this embodiment. In FIG. 1, the wireless communication system includes a terminal device 1A, a terminal device 1B, and a base station device 3. Hereinafter, the terminal device 1A and the terminal device 1B are also referred to as the terminal device 1.

[0014] The terminal device 1 is also referred to as a user terminal, a mobile station device, a communication terminal, a mobile device, a terminal, a UE (User Equipment), or an MS (Mobile Station). The base station device 3 is also referred to as a radio base station device, a base station, a radio base station, a fixed station, an NB (Node B), an eNB (evolved Node B), a BTS (Base Transceiver Station), a BS (Base Station), an NR NB (NR Node B), an NNB, a TRP (Transmission and Reception Point), or a gNB. The base station device 3 may include a core network device. Further, the base station device 3 may include one or more transmission reception points 4 (transmission reception point). At least a part of the functions / processes of the base station device 3 described below may be the functions / processes at each of the transmission reception points 4 included in the base station device 3. The base station device 3 may serve the terminal device 1 with a communication range (communication area) controlled by the base station device 3 as one or more cells. Further, the base station device 3 may serve the terminal device 1 with a communication range (communication area) controlled by one or more transmission reception points 4 as one or more cells. Further, the base station device 3 may divide one cell into a plurality of sub-areas (Beamed area) and serve the terminal device 1 in each sub-area. Here, the sub-area may be identified based on the index of the beam used in beamforming or the index of precoding.

[0015] In this embodiment, the wireless communication link from the base station device 3 to the terminal device 1 is referred to as a downlink. In this embodiment, the wireless communication link from the terminal device 1 to the base station device 3 is referred to as an uplink.

[0016] In FIG. 1, in the wireless communication between the terminal device 1 and the base station device 3, orthogonal frequency division multiplexing (OFDM) including a cyclic prefix (CP), single-carrier frequency division multiplexing (SC-FDM), discrete Fourier transform spread OFDM (DFT-S-OFDM), or multi-carrier code division multiplexing (MC-CDM) may be used.

[0017] Also, in FIG. 1, in the wireless communication between the terminal device 1 and the base station device 3, universal-filtered multi-carrier (UFMC), filtered OFDM (F-OFDM), OFDM multiplied by a window function (Windowed OFDM), or filter-bank multi-carrier (FBMC) may be used.

[0018] Note that, in the present embodiment, OFDM is described as a transmission scheme using OFDM symbols, but the cases of using the other above-described transmission schemes are also included in one aspect of the present invention.

[0019] Also, in FIG. 1, in the wireless communication between the terminal device 1 and the base station device 3, the above-described transmission schemes without using CP or with zero-padding instead of CP may be used. Also, CP and zero-padding may be added both in the front and in the back.

[0020] One aspect of this embodiment may be operated in carrier aggregation or dual connectivity with a radio access technology (RAT) such as LTE, LTE-A / LTE-A Pro. At this time, it may be used in some or all cells or cell groups, carriers or carrier groups (for example, primary cell (PCell), secondary cell (SCell), primary secondary cell (PSCell), MCG (Master Cell Group), SCG (Secondary Cell Group), etc.). In addition, one aspect of this embodiment may be used in a stand-alone operation that operates alone. In dual connectivity operation, the SpCell (Special Cell) is referred to as the PCell of the MCG or the PSCell of the SCG, respectively, depending on whether the MAC (Medium Access Control) entity is associated with the MCG or the SCG. If it is not dual connectivity operation, the SpCell (Special Cell) is referred to as the PCell. The SpCell (Special Cell) supports PUCCH transmission and contention-based random access.

[0021] In this embodiment, one or more serving cells may be configured for the terminal device 1. The plurality of configured serving cells may include one primary cell and one or more secondary cells. The primary cell may be a serving cell in which an initial connection establishment procedure has been performed, a serving cell that has initiated a connection re - establishment procedure, or a cell designated as the primary cell in a handover procedure. One or more secondary cells may be configured at the time when the RRC (Radio Resource Control) connection is established or later. However, the plurality of configured serving cells may include one primary secondary cell. The primary secondary cell may be a secondary cell among the one or more secondary cells configured for the terminal device 1 that is capable of transmitting control information on the uplink. Also, for the terminal device 1, a subset of two types of serving cells, a master cell group and a secondary cell group, may be configured. The master cell group may be composed of one primary cell and zero or more secondary cells. The secondary cell group may be composed of one primary secondary cell and zero or more secondary cells.

[0022] In the wireless communication system of this embodiment, TDD (Time Division Duplex) and / or FDD (Frequency Division Duplex) may be applied. The TDD (Time Division Duplex) method or the FDD (Frequency Division Duplex) method may be applied to all of the plurality of cells. Also, cells to which the TDD method is applied and cells to which the FDD method is applied may be aggregated. The TDD method may be referred to as unpaired spectrum operation. The FDD method may be referred to as paired spectrum operation.

[0023] The subframe will be described below. In this embodiment, the following is referred to as a subframe, but the subframe according to this embodiment may be referred to as a resource unit, a radio frame, a time period, a time interval, etc.

[0024] FIG. 2 is a diagram showing an example of the schematic configuration of uplink and downlink slots according to the first embodiment of the present invention. Each of the radio frames is 10 ms long. Each of the radio frames is composed of 10 subframes and W slots. Also, 1 slot is composed of X OFDM symbols. That is, the length of 1 subframe is 1 ms. The length of each slot is defined by the subcarrier spacing. For example, when the subcarrier spacing of the OFDM symbol is 15 kHz and NCP (Normal Cyclic Prefix), X = 7 or X = 14, which are 0.5 ms and 1 ms respectively. Also, when the subcarrier spacing is 60 kHz, X = 7 or X = 14, which are 0.125 ms and 0.25 ms respectively. Also, for example, when X = 14, when the subcarrier spacing is 15 kHz, W = 10, and when the subcarrier spacing is 60 kHz, W = 40. FIG. 2 shows the case of X = 7 as an example. Note that the example in FIG. 2 can be similarly extended to the case of X = 14. Also, the uplink slot is defined in the same way, and the downlink slot and the uplink slot may be defined separately. Also, the cell bandwidth in FIG. 2 may be defined as a part of the bandwidth (BWP: BandWidth Part). Also, the slot may be defined as a transmission time interval (TTI: Transmission Time Interval). The slot does not have to be defined as a TTI. The TTI may be the transmission period of the transport block.

[0025] The signal or physical channel transmitted in each slot may be represented by a resource grid. The resource grid is defined by a plurality of subcarriers and a plurality of OFDM symbols for each numerology (subcarrier spacing and cyclic prefix length) and each carrier. The number of subcarriers constituting one slot depends on the downlink and uplink bandwidths of the cell, respectively. Each element in the resource grid is referred to as a resource element. The resource element may be identified using the subcarrier number and the OFDM symbol number.

[0026] The resource grid is used to represent the mapping of resource elements of a certain physical downlink channel (such as PDSCH) or uplink channel (such as PUSCH). For example, when the subcarrier spacing is 15 kHz, the number of OFDM symbols X = 14 included in a subframe, and in the case of NCP, one physical resource block is defined by 14 consecutive OFDM symbols in the time domain and 12 * Nmax consecutive subcarriers in the frequency domain. Nmax is the maximum number of resource blocks (RBs) determined by the subcarrier spacing setting μ described later. That is, the resource grid is composed of (14 * 12 * Nmax, μ) resource elements. In the case of ECP (Extended CP), since it is only supported at a subcarrier spacing of 60 kHz, one physical resource block is defined by, for example, 12 (the number of OFDM symbols included in one slot) * 4 (the number of slots included in one subframe) = 48 consecutive OFDM symbols in the time domain and 12 * Nmax, μ consecutive subcarriers in the frequency domain. That is, the resource grid is composed of (48 * 12 * Nmax, μ) resource elements.

[0027] As resource blocks (RBs), a reference resource block, a common resource block, a physical resource block, and a virtual resource block are defined. One resource block is defined as 12 subcarriers that are continuous in the frequency domain. The reference resource block is common to all subcarriers. For example, resource blocks may be configured with a subcarrier spacing of 15 kHz and numbered in ascending order. The subcarrier index 0 at the reference resource block index 0 may be referred to as reference point A (point A) (it may also be simply referred to as "reference point"). The common resource block is a resource block numbered in ascending order from 0 at each subcarrier spacing setting μ from reference point A. The above-described resource grid is defined by this common resource block. The physical resource block is a resource block numbered in ascending order from 0 included in a bandwidth part (BWP) described later. The physical resource block is a resource block numbered in ascending order from 0 included in the bandwidth part (BWP). A certain physical uplink channel is first mapped to a virtual resource block. Thereafter, the virtual resource block is mapped to a physical resource block. Hereinafter, the resource block may be a virtual resource block, a physical resource block, a common resource block, or a reference resource block.

[0028] Next, the subcarrier spacing setting μ will be described. As described above, in NR, one or more OFDM numerologies are supported. In a certain BWP, the subcarrier spacing setting μ (μ = 0, 1,..., 5) and the cyclic prefix length are given by the upper layer for the downlink BWP and given by the upper layer in the uplink BWP. Here, when μ is given, the subcarrier spacing Δf is given by Δf = 2^μ·15 (kHz).

[0029] In the subcarrier spacing configuration μ, the slots are numbered in ascending order from 0 to \(N^{subframe,μ}_{slot}-1\) within a subframe, and from 0 to \(N^{frame,μ}_{slot}-1\) in ascending order within a frame. Based on the slot configuration and the cyclic prefix, \(N^{slot}_{symb}\) consecutive OFDM symbols are within a slot. \(N^{slot}_{symb}\) is 14. The start of slot \(n^{μ}_{s}\) in a subframe is time-aligned with the start of the \(n^{μ}_{s}*N^{slot}_{symb}\)-th OFDM symbol in the same subframe.

[0030] Next, subframes, slots, and minislots will be described. FIG. 3 is a diagram showing an example of the relationship in the time domain of subframes, slots, and minislots. As shown in the figure, three types of time units are defined. A subframe is 1 ms regardless of the subcarrier spacing, the number of OFDM symbols included in a slot is 7 or 14 (however, when the cyclic prefix (CP) added to each symbol is an Extended CP, it may be 6 or 12), and the slot length varies depending on the subcarrier spacing. Here, when the subcarrier spacing is 15 kHz, a subframe includes 14 OFDM symbols. A downlink slot may be referred to as PDSCH mapping type A. An uplink slot may be referred to as PUSCH mapping type A.

[0031] A mini-slot (which may also be referred to as a subslot) is a time unit composed of a number of OFDM symbols less than the number of OFDM symbols included in one slot. The figure shows, as an example, the case where a mini-slot is composed of 2 OFDM symbols. The OFDM symbols within a mini-slot may coincide with the OFDM symbol timing that constitutes a slot. Note that the minimum unit of scheduling may be a slot or a mini-slot. Also, allocating a mini-slot may be referred to as non-slot-based scheduling. Also, scheduling a mini-slot may be expressed as scheduling a resource in which the relative time positions of the start positions of the reference signal and data are fixed. A downlink mini-slot may be referred to as PDSCH mapping type B. An uplink mini-slot may be referred to as PUSCH mapping type B.

[0032] In the terminal device 1, the transmission direction (uplink, downlink, or flexible) of the symbols within each slot is set at the upper layer using an RRC message including a predetermined upper layer parameter received from the base station device 3, or is set by a PDCCH of a specific DCI format (for example, DCI format 2_0) received from the base station device 3. In this embodiment, what sets each symbol within a slot to be either uplink, downlink, or flexible in each slot is referred to as a slot format. One slot format may include downlink symbols, uplink symbols, and flexible symbols.

[0033] In the downlink of this embodiment, the carrier corresponding to the serving cell is referred to as a downlink component carrier (or downlink carrier). In the uplink of this embodiment, the carrier corresponding to the serving cell is referred to as an uplink component carrier (or uplink carrier). In the sidelink of this embodiment, the carrier corresponding to the serving cell is referred to as a sidelink component carrier (or sidelink carrier). The downlink component carrier, uplink component carrier, and / or sidelink component carrier are collectively referred to as a component carrier (or carrier).

[0034] The physical channels and physical signals of this embodiment will be described.

[0035] In FIG. 1, in the wireless communication between the terminal device 1 and the base station device 3, the following physical channels are used.

[0036] · PBCH (Physical Broadcast CHannel) · Additional PBCH · PDCCH (Physical Downlink Control CHannel) · PDSCH (Physical Downlink Shared CHannel) · PUCCH (Physical Uplink Control CHannel) · PUSCH (Physical Uplink Shared CHannel) · PRACH (Physical Random Access CHannel)

[0037] The PBCH is used to notify an important information block (MIB: Master Information Block, EIB: Essential Information Block, BCH: Broadcast Channel) that contains important system information necessary for the terminal device 1.

[0038] Also, the PBCH may notify information for specifying the number (SFN: System Frame Number) of the radio frame (also referred to as a system frame) to which the PBCH is mapped and / or information for specifying a half radio frame (HRF: Half Radio Frame) (also referred to as a half frame).

[0039] Also, the PBCH may be used to notify a time index within the period of the SS / PBCH block (also referred to as a synchronization signal block, SS block, or SSB). Here, the time index is information indicating the index of the synchronization signal and PBCH within the cell. The time index may also be referred to as an SSB index or an SS / PBCH block index. For example, when transmitting the SS / PBCH block using the assumption of three transmission beams (quasi co-location (QCL) regarding transmission filter settings and reception spatial parameters), it may indicate the time order within a predetermined period or a set period. Also, the terminal device may recognize the difference in the time index as the difference in the transmission beam.

[0040] The additional PBCH may include the MIB, information for specifying the SFN, information for specifying the half frame, and / or the SS / PBCH block index.

[0041] The PDCCH is used to transmit (or carry) downlink control information (Downlink Control Information: DCI) in downlink wireless communication (wireless communication from the base station device 3 to the terminal device 1). Here, one or more DCIs (which may also be referred to as DCI formats) are defined for the transmission of downlink control information. That is, the fields for downlink control information are defined as DCIs and mapped to information bits. The PDCCH is transmitted in PDCCH candidates. The terminal device 1 monitors a set of PDCCH candidates in the serving cell. However, to monitor may mean attempting to decode the PDCCH according to a certain DCI format.

[0042] For example, the following DCI formats may be defined. · DCI format 0_0 · DCI format 0_1 · DCI format 0_2 · DCI format 1_0 · DCI format 1_1 · DCI format 1_2 · DCI format 2_0 · DCI format 2_1 · DCI format 2_2 · DCI format 2_3

[0043] DCI format 0_0 may be used for scheduling of PUSCH in a certain serving cell. DCI format 0_0 may include information indicating the scheduling information of PUSCH (frequency domain resource allocation and time domain resource allocation). DCI format 0_0 may be appended with a Cyclic Redundancy Check (CRC) scrambled by any one of Cell-RNTI (C-RNTI), Configured Scheduling (CS)-RNTI), MCS-C-RNTI, and / or Temporary C-NRTI (TC-RNTI) among the Radio Network Temporary Identifiers (RNTIs) which are identifiers. DCI format 0_0 may be monitored in the common search space or UE-specific search space.

[0044] DCI format 0_1 may be used for scheduling of PUSCH in a certain serving cell. DCI format 0_1 may include information indicating the scheduling information of PUSCH (frequency domain resource allocation and time domain resource allocation), information indicating the BandWidth Part (BWP), a Channel State Information (CSI) request, a Sounding Reference Signal (SRS) request, and / or information regarding antenna ports. DCI format 0_1 may be appended with a CRC scrambled by any one of C-RNTI, CS-RNTI, Semi Persistent (SP)-CSI-RNTI, and / or MCS-C-RNTI among the RNTIs. DCI format 0_1 may be monitored in the UE-specific search space.

[0045] DCI format 0_2 may be used for scheduling PUSCH in a certain serving cell. DCI format 0_2 may include information indicating the scheduling information of PUSCH (frequency domain resource allocation and time domain resource allocation), information indicating BWP, CSI request, SRS request, and / or information regarding antenna ports. DCI format 0_2 may be added with a CRC scrambled by any one of C-RNTI, CSI-RNTI, SP-CSI-RNTI, and / or MCS-C-RNTI among RNTIs. DCI format 0_2 may be monitored in the UE-specific search space. DCI format 0_2 may be referred to as DCI format 0_1A or the like.

[0046] DCI format 1_0 may be used for scheduling PDSCH in a certain serving cell. DCI format 1_0 may include information indicating the scheduling information of PDSCH (frequency domain resource allocation and time domain resource allocation). DCI format 1_0 may be added with a CRC scrambled by any one of C-RNTI, CS-RNTI, MCS-C-RNTI, Paging RNTI (P-RNTI), System Information (SI)-RNTI, Random Access (RA)-RNTI, and / or TC-RNTI among identifiers. DCI format 1_0 may be monitored in the common search space or the UE-specific search space.

[0047] DCI format 1_1 may be used for scheduling the PDSCH in a certain serving cell. DCI format 1_1 may include information indicating the scheduling information (frequency domain resource allocation and time domain resource allocation) of the PDSCH, information indicating the bandwidth part (BWP), transmission configuration indication (TCI), and / or information regarding the antenna port. DCI format 1_1 may be added with a CRC scrambled by any one of C-RNTI, CS-RNTI, and / or MCS-C-RNTI among the RNTIs. DCI format 1_1 may be monitored in the UE-specific search space.

[0048] DCI format 1_2 may be used for scheduling the PDSCH in a certain serving cell. DCI format 1_2 may include information indicating the scheduling information (frequency domain resource allocation and time domain resource allocation) of the PDSCH, information indicating the BWP, TCI, and / or information regarding the antenna port. DCI format 1_2 may be added with a CRC scrambled by any one of C-RNTI, CS-RNTI, and / or MCS-C-RNTI among the RNTIs. DCI format 1_2 may be monitored in the UE-specific search space. DCI format 1_2 may be referred to as DCI format 1_1A or the like.

[0049] DCI format 2_0 is used for notifying the slot format of one or more slots. The slot format is defined such that each OFDM symbol in the slot is classified as either downlink, flexible, or uplink. For example, when the slot format is 28, DDDDDDDDDDDDFU is applied to the 14-symbol OFDM symbols in the slot where slot format 28 is indicated. Here, D is a downlink symbol, F is a flexible symbol, and U is an uplink symbol. Note that the slot will be described later.

[0050] DCI format 2_1 is used to notify the terminal device 1 of physical resource blocks (PRBs or RBs) and OFDM symbols that may be assumed to have no transmission. Note that this information may be referred to as a preemption indication (intermittent transmission indication).

[0051] DCI format 2_2 is used for transmitting the PUSCH and transmit power control (TPC) commands for the PUSCH.

[0052] DCI format 2_3 is used for transmitting a group of TPC commands for sounding reference signal (SRS) transmission by one or more terminal devices 1. Also, an SRS request may be transmitted together with the TPC command. Further, for the uplink without PUSCH and PUCCH in DCI format 2_3, or for the uplink where the transmit power control of the SRS is not associated with the transmit power control of the PUSCH, an SRS request and a TPC command may be defined.

[0053] DCI for the downlink is also referred to as a downlink grant or a downlink assignment. Here, DCI for the uplink is also referred to as an uplink grant or an uplink assignment. DCI may also be referred to as a DCI format.

[0054] The CRC parity bits added to a DCI format transmitted by one PDCCH are scrambled by SI-RNTI, P-RNTI, C-RNTI, CS-RNTI, RA-RNTI, or TC-RNTI. SI-RNTI may be an identifier used for broadcasting system information. P-RNTI may be an identifier used for paging and notifying system information changes. C-RNTI, MCS-C-RNTI, and CS-RNTI are identifiers for identifying terminal devices within a cell. TC-RNTI is an identifier for identifying the terminal device 1 that transmitted a random access preamble during a contention based random access procedure.

[0055] C-RNTI is used for controlling PDSCH or PUSCH in one or more slots. CS-RNTI is used for periodic allocation of resources of PDSCH or PUSCH. MCS-C-RNTI is used to indicate the use of a predetermined MCS table for grant-based transmission. TC-RNTI is used for controlling PDSCH transmission or PUSCH transmission in one or more slots. TC-RNTI is used to schedule retransmission of random access message 3 and transmission of random access message 4. RA-RNTI is determined according to the frequency and time position information of the physical random access channel that transmitted a random access preamble.

[0056] For the C-RNTI and / or other RNTIs, different values may be used corresponding to the type of traffic of the PDSCH or PUSCH. For the C-RNTI and other RNTIs, different values may be used corresponding to the service type (eMBB, URLLC, and / or mMTC) of the data transmitted on the PDSCH or PUSCH. The base station device 3 may use different values of RNTIs corresponding to the service type of the data to be transmitted. The terminal device 1 may identify the service type of the data transmitted on the associated PDSCH or PUSCH based on the value of the RNTI applied to the received DCI (used for scrambling).

[0057] The PUCCH is used to transmit uplink control information (UCI) in the uplink wireless communication (wireless communication from the terminal device 1 to the base station device 3). Here, the uplink control information may include channel state information (CSI) used to indicate the state of the downlink channel. Also, the uplink control information may include a scheduling request (SR) used to request UL-SCH resources. Also, the uplink control information may include HARQ-ACK (Hybrid Automatic Repeat request ACKnowledgement). The HARQ-ACK may indicate the HARQ-ACK for the downlink data (Transport block, Medium Access Control Protocol Data Unit: MAC PDU, Downlink-Shared Channel: DL-SCH).

[0058] The PDSCH is used for transmitting downlink data (DL-SCH: Downlink Shared Channel) from the Medium Access Control (MAC) layer. Also, the PDSCH is used for transmitting system information (SI) and random access response (RAR) in the downlink case.

[0059] The PUSCH may be used to transmit uplink data (UL-SCH: Uplink Shared Channel) from the MAC layer or to transmit HARQ-ACK and / or CSI together with the uplink data. Also, the PUSCH may be used to transmit only CSI or only HARQ-ACK and CSI. That is, the PUSCH may be used to transmit only UCI.

[0060] Here, the base station device 3 and the terminal device 1 exchange signals (transmit and receive) in the upper layer (higher layer). For example, the base station device 3 and the terminal device 1 may transmit and receive RRC messages (also referred to as RRC messages, RRC information, RRC signalling) in the Radio Resource Control (RRC) layer. Also, the base station device 3 and the terminal device 1 may transmit and receive MAC control elements in the Medium Access Control (MAC) layer. Further, the RRC layer of the terminal device 1 acquires system information notified from the base station device 3. Here, RRC messages, system information, and / or MAC control elements are also referred to as upper layer signals (higher layer signaling) or upper layer parameters (higher layer parameter). Each parameter included in the upper layer signal received by the terminal device 1 may be referred to as an upper layer parameter. The upper layer here means the upper layer as seen from the physical layer, and may include one or more of the MAC layer, RRC layer, RLC layer, PDCP layer, Non-Access Stratum (NAS) layer, etc. For example, in the processing of the MAC layer, the upper layer may include one or more of the RRC layer, RLC layer, PDCP layer, NAS layer, etc. Hereinafter, the meaning of "A is given (provided) in the upper layer" or "A is given (provided) by the upper layer" may mean that the upper layer (mainly the RRC layer, MAC layer, etc.) of the terminal device 1 receives A from the base station device 3, and the received A is given (provided) from the upper layer of the terminal device 1 to the physical layer of the terminal device 1. For example, in the terminal device 1, "an upper layer parameter is provided" may mean that the terminal device 1 receives an upper layer signal from the base station device 3, and the upper layer parameter included in the received upper layer signal is provided from the upper layer of the terminal device 1 to the physical layer of the terminal device 1. That the upper layer parameter is set in the terminal device 1 may also mean that the upper layer parameter is given (provided) to the terminal device 1.For example, the setting of the upper layer parameters in the terminal device 1 may mean that the terminal device 1 receives an upper layer signal from the base station device 3 and sets the received upper layer parameters in the upper layer. However, the setting of the upper layer parameters in the terminal device 1 may include the setting of default parameters pre - given to the upper layer of the terminal device 1.

[0061] The PDSCH or PUSCH may be used to transmit RRC signaling and MAC control elements. The RRC signaling transmitted from the base station device 3 by the PDSCH may be common signaling for a plurality of terminal devices 1 within the cell. Also, the RRC signaling transmitted from the base station device 3 may be dedicated signaling (also referred to as dedicated signaling) for a certain terminal device 1. That is, UE - specific information may be transmitted using dedicated signaling for a certain terminal device 1. Also, the PUSCH may be used to transmit UE Capability in the uplink.

[0062] In FIG. 1, in downlink wireless communication, the following downlink physical signals are used. Here, the downlink physical signals are not used to transmit information output from the upper layer, but are used by the physical layer. · Synchronization signal (SS) · Reference Signal (RS)

[0063] The synchronization signal may include a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS). The cell ID may be detected using the PSS and SSS.

[0064] The synchronization signal is used when the terminal device 1 performs synchronization in the frequency domain and time domain of the downlink. Here, the synchronization signal may be used by the terminal device 1 for precoding or beam selection in precoding or beamforming by the base station device 3. Note that the beam may also be referred to as a transmission or reception filter setting, or a spatial domain transmission filter or spatial domain reception filter.

[0065] The reference signal is used when the terminal device 1 performs propagation path compensation of the physical channel. Here, the reference signal may also be used by the terminal device 1 to calculate the downlink CSI. Further, the reference signal may be used for fine synchronization such as numerology including radio parameters and subcarrier spacing and FFT window synchronization.

[0066] In this embodiment, any one or more of the following downlink reference signals are used. · DMRS (Demodulation Reference Signal) · CSI-RS (Channel State Information Reference Signal) · PTRS (Phase Tracking Reference Signal) · TRS (Tracking Reference Signal)

[0067] DMRS is used to demodulate the modulation signal. Note that two types of reference signals, i.e., the reference signal for demodulating PBCH and the reference signal for demodulating PDSCH, may be defined for DMRS, or both may be referred to as DMRS. CSI-RS is used for the measurement of channel state information (CSI) and beam management, and the transmission method of periodic or semi-persistent or aperiodic CSI reference signals is applied. For CSI-RS, non-zero power (NZP) CSI-RS and zero power (ZP) CSI-RS with zero transmission power (or reception power) may be defined. Here, ZP CSI-RS may be defined as a CSI-RS resource with zero transmission power or not transmitted. PTRS is used to track the phase on the time axis for the purpose of guaranteeing the frequency offset caused by phase noise. TRS is used to guarantee the Doppler shift during high-speed movement. Note that TRS may be used as one setting of CSI-RS. For example, the radio resource of 1-port CSI-RS may be set as TRS.

[0068] In this embodiment, any one or more of the following uplink reference signals are used. · DMRS (Demodulation Reference Signal) · PTRS (Phase Tracking Reference Signal) · SRS (Sounding Reference Signal)

[0069] DMRS is used to demodulate the modulation signal. Note that two types of reference signals, i.e., the reference signal for demodulating PUCCH and the reference signal for demodulating PUSCH, may be defined for DMRS, or both may be referred to as DMRS. SRS is used for the measurement of uplink channel state information (CSI), channel sounding, and beam management. PTRS is used to track the phase on the time axis for the purpose of guaranteeing the frequency offset caused by phase noise.

[0070] In this embodiment, the downlink physical channel and / or the downlink physical signal are generally referred to as the downlink signal. In this embodiment, the uplink physical channel and / or the uplink physical signal are generally referred to as the uplink signal. In this embodiment, the downlink physical channel and / or the uplink physical channel are generally referred to as the physical channel. In this embodiment, the downlink physical signal and / or the uplink physical signal are generally referred to as the physical signal.

[0071] BCH, UL-SCH, and DL-SCH are transport channels. The channels used in the Medium Access Control (MAC) layer are referred to as transport channels. The unit of the transport channel used in the MAC layer is also referred to as a transport block (TB) and / or a MAC Protocol Data Unit (PDU). HARQ (Hybrid Automatic Repeat reQuest) control is performed for each transport block in the MAC layer. A transport block is the unit of data that the MAC layer delivers to the physical layer. In the physical layer, the transport block is mapped to codewords, and channel coding is performed for each codeword.

[0072] FIG. 4 is a diagram showing an example of an SS / PBCH block (also referred to as a synchronization signal block, SS block, or SSB) according to this embodiment and a half frame (which may also be referred to as a Half frame with SS / PBCH block or an SS burst set) in which one or more SS / PBCH blocks are transmitted. FIG. 4 shows an example in which two SS / PBCH blocks are included in an SS burst set that exists at a certain period (which may also be referred to as an SSB period), and the SS / PBCH block is composed of four consecutive OFDM symbols.

[0073] The terminal device 1 assumes that the reception opportunities for the PSS, SSS, and PBCH exist in consecutive symbols using the format of the SS / PBCH block. In the half-frame in which the SS / PBCH block exists, the starting symbol index I of the symbol where the SS / PBCH block can be mapped SSB may be determined as follows. When the subcarrier spacing is 15 kHz, I SSB may be a symbol index that satisfies {2, 8} + 14 * n. However, n = 0, 1 when the carrier frequency is 3 GHz or less, and n = 0, 1, 2, 3 when the carrier frequency is 3 GHz or more. When the subcarrier spacing is 30 kHz, I SSB may be a symbol index that satisfies {4, 8, 16, 20} + 28 * n. However, n = 0 when the carrier frequency is 3 GHz or less, and n = 0, 1 when the carrier frequency is 3 GHz or more.

[0074] The SS / PBCH block is a block including the synchronization signals (PSS, SSS), PBCH, and DMRS for the PBCH. Transmitting the signals / channels included in the SS / PBCH block is expressed as transmitting the SS / PBCH block. When the base station device 3 transmits the synchronization signal and / or PBCH using one or more SS / PBCH blocks in the SS burst set, it may use an independent downlink transmission beam for each SS / PBCH block.

[0075] The generation of the payload transmitted by the PBCH according to this embodiment will be described.

[0076] The PBCH is mainly used for transmitting the information of the transport block including the MIB. The MIB is the 6 MSB (Most Significant Bit) of the 10 bits indicating the SFN in which the SS / PBCH block is transmitted, and is master information including the subcarrier spacing used for the SIB1 and the downlink signal in the initial access procedure, etc. However, the transport block including the MIB has a predetermined period P MIBmay be updated. However, the transport block including the MIB is one within a period P MIB and the transport block may be repeatedly used within the period P MIB . For example, the period P MIB is 80 ms, and the same transport block may be repeatedly transmitted within 80 ms. The base station device 3 generates an A 1 -bit transport block at a higher layer, and further adds 8-bit additional bit information. However, the A 1 -bit transport block may include the MIB.

[0077] The 1st to 4th bits of the additional bit information transmitted by the PBCH indicate the 4 LSBs (Least Significant Bits) of the 10-bit SFN in which the SS / PBCH block is transmitted. The 5th bit of the additional bit information transmitted by the PBCH is a half-frame bit indicating whether the half-frame in which the SS / PBCH block is transmitted is the first half or the second half of the radio frame. The 6th to 8th bits of the additional bit information transmitted by the PBCH indicate part of the SSB index information when the maximum number of SS / PBCH blocks that can be arranged within a half-frame is 64, and in other cases, indicate 1 bit and a reserved bit that are part of the subcarrier offset information for specifying the frequency position of the SS / PBCH block.

[0078] The base station device 3 performs interleaving processing on the A-bit (A = A 1 + 8) MIB and additional bit information, and then performs the first scrambling processing. However, the first scrambling processing outputs a bit sequence of a' 0 ~a' A for the input bit sequence of a 0 ~a A , and a' i = (a i + s i ) mod 2. However, s iIt is generated as shown in FIG. 5 based on the SFN in which the SS / PBCH block is transmitted. However, in FIG. 5, c(i) is a predetermined pseudo-random sequence. However, in FIG. 5, M = A - 3 when the number of SS / PBCH blocks that can be arranged in a half-frame is 4 or 8, and M = A - 6 when the number of SS / PBCH blocks that can be arranged in a half-frame is 64. However, in FIG. 5, v is determined as shown in FIG. 6 using the 3rd LSB and 2nd LSB of the SFN in which the SS / PBCH block is transmitted. According to the process in FIG. 6, the first scrambling process is a scrambling process based on a part of the bit sequence of the SFN of the radio frame in which the SS / PBCH block is transmitted.

[0079] The base station device 3 performs a CRC addition process of adding L-bit parity bits to the A-bit bit sequence a’ 0 ~a’ A generated by the first scrambling process, and then performs a first channel coding process using polar coding on B = A + L bits, generating N-bit coded bits.

[0080] The base station device 3 performs a first rate matching process on the N-bit coded bits, outputting a series b(0)~b(863) of 864 bits.

[0081] The base station device 3 performs a second scrambling process on the output bit sequence b(0)~b(863) of the first rate matching process before the modulation process. The output bit sequence of the second scrambling process is b’(i) = b(i) + c 2 (i + v 2 *864)) mod 2. However, c 2 is a predetermined pseudo-random sequence, and v 2 is the value indicated by the 2 LSB of the SSB index when the maximum number of SS / PBCH blocks that can be arranged in a half-frame is 4, and the value indicated by the 3 LSB of the SSB index in other cases.

[0082] The base station device 3 performs modulation processing on the output bit sequence b'(0) to b'(863) of the second scrambling process by QPSK, and generates 432 PBCH modulation symbols dPBCH(0) to dPBCH(431). The base station device 3 maps the generated 432 PBCH modulation symbols to the PBCH resources in the SS / PBCH block and transmits them as an SS / PBCH block.

[0083] In FIG. 4, one SS / PBCH block multiplexes PSS, SSS, PBCH, and DMRS for PBCH in time / frequency. FIG. 7 is a table showing the resources where PSS, SSS, PBCH, and DMRS for PBCH are arranged within the SS / PBCH block.

[0084] PSS may be mapped to the first symbol in the SS / PBCH block (the OFDM symbol with an OFDM symbol number of 0 relative to the start symbol of the SS / PBCH block). The sequence of PSS is composed of 127 symbols and may be mapped to the 57th subcarrier to the 183rd subcarrier in the SS / PBCH block (the subcarriers with subcarrier numbers 56 to 182 relative to the start subcarrier of the SS / PBCH block).

[0085] SSS may be mapped to the third symbol in the SS / PBCH block (the OFDM symbol with an OFDM symbol number of 2 relative to the start symbol of the SS / PBCH block). The sequence of SSS is composed of 127 symbols and may be mapped to the 57th subcarrier to the 183rd subcarrier in the SS / PBCH block (the subcarriers with subcarrier numbers 56 to 182 relative to the start subcarrier of the SS / PBCH block).

[0086] PBCH and DMRS may be mapped to the second, third, and fourth symbols within the SS / PBCH block (OFDM symbols with OFDM symbol numbers 1, 2, and 3 relative to the start symbol of the SS / PBCH block). The sequence of modulation symbols of PBCH is M symb symbols, and may be mapped to the resources where DMRS is not mapped among the first to 240th subcarriers (subcarriers with subcarrier numbers 0 to 239 relative to the start subcarrier of the SS / PBCH block) of the second and fourth symbols within the SS / PBCH block, and the first to 48th subcarriers and 184th to 240th subcarriers (subcarriers with subcarrier numbers 0 to 47 and 192 to 239 relative to the start subcarrier of the SS / PBCH block) of the third symbol within the SS / PBCH block. The sequence of symbols of DMRS is composed of 144 symbols, and may be mapped one by one to every 4 subcarriers among the first to 240th subcarriers (subcarriers with subcarrier numbers 0 to 239 relative to the start subcarrier of the SS / PBCH block) of the second and fourth symbols within the SS / PBCH block, and the first to 48th subcarriers and 184th to 240th subcarriers (subcarriers with subcarrier numbers 0 to 47 and 192 to 239 relative to the start subcarrier of the SS / PBCH block) of the third symbol within the SS / PBCH block. For example, for 240 subcarriers, the modulation symbols of PBCH may be mapped to 180 of them, and the DMRS for the PBCH may be mapped to 60 subcarriers.

[0087] One or more SS / PBCH blocks in the SS burst set may be assigned different SSB indexes. The SS / PBCH block to which an SSB index is assigned may be periodically transmitted by the base station device 3 based on the SSB period. For example, an SSB period for the SS / PBCH block to be used for initial access and an SSB period set for the connected (Connected or RRC_Connected) terminal device 1 may be defined. Also, the SSB period set for the connected (Connected or RRC_Connected) terminal device 1 may be set by an RRC parameter. Also, the SSB period set for the connected (Connected or RRC_Connected) terminal device 1 is a period of radio resources in a time domain where transmission may potentially occur, and the base station device 3 may actually decide whether to transmit. Also, the SSB period for the SS / PBCH block to be used for initial access may be predefined in a specification or the like. For example, the terminal device 1 performing initial access may regard the SSB period as 20 milliseconds.

[0088] The time position of the SS burst set to which the SS / PBCH block is mapped may be specified based on information specifying the system frame number (SFN: System Frame Number) included in the PBCH and / or information specifying the half frame. The terminal device 1 that has received the SS / PBCH block may specify the current system frame number and half frame based on the received SS / PBCH block.

[0089] An SSB index (which may also be referred to as an SS / PBCH block index) is assigned to the SS / PBCH block according to its temporal position within the SS burst set. The terminal device 1 specifies the SSB index based on the information of the PBCH and / or the information of the reference signal included in the detected SS / PBCH block.

[0090] SS / PBCH blocks with the same relative time within each SS burst set among multiple SS burst sets may be assigned the same SSB index. It may be assumed that SS / PBCH blocks with the same relative time within each SS burst set among multiple SS burst sets are QCL (or the same downlink transmission beam is applied). Also, it may be assumed that the antenna ports in SS / PBCH blocks with the same relative time within each SS burst set among multiple SS burst sets are QCL with respect to average delay, Doppler shift, and spatial correlation.

[0091] Within the period of a certain SS burst set, it may be assumed that SS / PBCH blocks assigned the same SSB index are QCL with respect to average delay, average gain, Doppler spread, Doppler shift, and spatial correlation. Settings corresponding to one or more SS / PBCH blocks (or reference signals that may be) that are QCL may be referred to as QCL settings.

[0092] The number of SS / PBCH blocks (which may also be referred to as the number of SS blocks or SSBs) may be defined, for example, as the number (quantity) of SS / PBCH blocks within an SS burst, or within an SS burst set, or within the period of an SS / PBCH block. Also, the number of SS / PBCH blocks may indicate the number of beam groups for cell selection within an SS burst, or within an SS burst set, or within the period of an SS / PBCH block. Here, a beam group may be defined as the number of different SS / PBCH blocks or the number of different beams included within an SS burst, or within an SS burst set, or within the period of an SS / PBCH block.

[0093] The base station device 3 according to this embodiment transmits an additional PBCH block using a resource (time resource or frequency resource) different from the SS / PBCH block. The additional PBCH block is a block including an additional PBCH and DMRS for the additional PBCH. Transmitting the signal / channel included in the additional PBCH block is expressed as transmitting the additional PBCH block. However, the additional PBCH block may be transmitted from the base station device 3 only in a frequency band supporting a predetermined terminal device 1. However, the additional PBCH block may be transmitted from the base station device 3 only in a TDD system and / or an FDD system supporting a predetermined terminal device 1. However, the additional PBCH block may be transmitted from the base station device 3 only in a cell supporting a predetermined terminal device 1. However, the MIB transmitted by the PBCH in the SS / PBCH block may be additionally transmitted by the additional PBCH from the base station device 3 only in a frequency band supporting a predetermined terminal device 1. However, the MIB transmitted by the PBCH in the SS / PBCH block may be additionally transmitted by the additional PBCH from the base station device 3 only in a TDD system and / or an FDD system supporting a predetermined terminal device 1. However, the MIB transmitted by the PBCH in the SS / PBCH block may be additionally transmitted by the additional PBCH from the base station device 3 only in a cell supporting a predetermined terminal device 1. However, the above-mentioned predetermined terminal device 1 may be a terminal device 1 having a predetermined terminal capability (UE capability). When the base station device 3 transmits an additional PBCH using one or more additional PBCH blocks in an additional PBCH burst set, an independent downlink transmission beam may be used for each additional PBCH block. However, the additional PBCH block according to this embodiment may be the additional PBCH and / or the DMRS itself for the additional PBCH.For example, transmitting / receiving / processing an additional PBCH block may be transmitting / receiving / processing an additional PBCH and / or DMRS for the additional PBCH. However, the additional PBCH and / or DMRS for the additional PBCH according to this embodiment may be the PBCH and / or DMRS for the PBCH transmitted other than the SS / PBCH block. For example, the additional PBCH and / or DMRS for the additional PBCH may be the PBCH and / or DMRS for the PBCH transmitted in a resource of a different time and / or frequency from the SS / PBCH block periodically transmitted in the SSB period. However, the additional PBCH block according to this embodiment may be an SS / PBCH block without PSS and / or SSS.

[0094] The additional PBCH block and / or additional PBCH according to this embodiment is associated with one SS / PBCH block transmitted within an SS burst set (Half frame with SS / PBCH block). The transport block transmitted by the additional PBCH and the transport block transmitted by the PBCH within the corresponding SS / PBCH block may be the same. The transport blocks transmitted by the PBCH and the additional PBCH within the SS / PBCH block include the same MIB.

[0095] The generation of the payload transmitted by the additional PBCH according to this embodiment will be described.

[0096] The additional PBCH is used to transmit information on the transport block including the MIB, and may include the same information as the transport block of the PBCH included in the corresponding SS / PBCH block. The base station device 3 is A 1A bit transport block may be generated at a higher layer, and further 8-bit additional bit information may be added. However, the transport block and / or additional bit information transmitted by the additional PBCH may use the transport block and additional bit information transmitted by the PBCH of the corresponding SS / PBCH block.

[0097] The 1st to 4th bits of the additional bit information transmitted by the additional PBCH may indicate the 4 LSBs (Least Significant Bits) of the 10-bit SFN indicated by the corresponding SS / PBCH block. The 5th bit of the additional bit information transmitted by the additional PBCH may be a half-frame bit indicating whether the half-frame transmitted by the corresponding SS / PBCH block is the first half or the second half of the radio frame. The 6th to 8th bits of the additional bit information transmitted by the additional PBCH indicate some information of the SSB index when the maximum number of SS / PBCH blocks that can be arranged within a half-frame is 64, and in other cases, may be 1 bit and reserved bits indicating some of the subcarrier offset information for specifying the frequency position of the SS / PBCH block.

[0098] The base station device 3 may perform the same interleaving process as the PBCH on the MIB of A bits (A = A 1 +8) and the additional bit information, and then perform a third scrambling process. However, the third scrambling process outputs a bit sequence of a’ 0 ~a’ A for the input bit sequence of a 0 ~a A , and a’ i =(a i +s’ i )mod2. However, s’ iThe SS / PBCH block corresponding to the additional PBCH may be generated as shown in FIG. 5 based on the SFN in which it is transmitted. That is, the third scrambling process is the same as the first scrambling process, but s’ used in the third scrambling process i is not a part of the bit sequence of the SFN of the radio frame in which the additional PBCH block is transmitted, but may be based on a part of the bit sequence of the SFN of the radio frame in which the SS / PBCH block corresponding to the additional PBCH block is transmitted. In other words, the third scrambling process may be a scrambling process based on a part of the bit sequence of the SFN of the radio frame in which the SS / PBCH block corresponding to the additional PBCH block is transmitted.

[0099] The base station device 3 performs a CRC addition process of adding L-bit parity bits to the A-bit bit sequence a’ 0 ~a’ A generated by the third scrambling process, and then performs a second channel encoding process using polar coding on B = A + L bits to generate N-bit encoded bits. However, the second channel encoding process may be the same as the first channel encoding process used for generating the payload of the PBCH. However, the B bits input to the second channel encoding process may use the B bits input in the channel encoding process of the PBCH included in the SS / PBCH block corresponding to the additional PBCH.

[0100] The N-bit encoded bits are output as a series of E bits b(0) to b(E-1) by the second rate matching process. Here, E is based on the number of additional PBCH modulation symbols arranged in the additional PBCH block. For example, when 540 additional PBCH modulation symbols of 180 subcarriers × 3 OFDM symbols are arranged in the additional PBCH block and the modulation scheme is QPSK, E is 1080. However, the N-bit encoded bits input to the second rate matching process may use the N-bit encoded bits transmitted by the PBCH included in the SS / PBCH block corresponding to the additional PBCH.

[0101] The base station device 3 performs a fourth scrambling process on the output bit series b(0) to b(E-1) of the second rate matching process before the modulation process. The output bit series of the second scrambling process is b’(i) = b(i) + c 2 (i + v 2 *E)) mod 2. Here, c 2 is a predetermined pseudo-random sequence, and v 2 is a value indicated by the 2 LSB of the SSB index when the maximum number of SS / PBCH blocks that can be arranged within a half frame is 4, and is a value indicated by the 3 LSB of the SSB index otherwise.

[0102] The base station device 3 performs a modulation process on the output bit series b’(0) to b’(E-1) of the fourth scrambling process by QPSK, and generates E / 2 symbols of PBCH modulation symbols dPBCH(0) to dPBCH(E / 2-1). The base station device 3 maps the generated E / 2 symbols of PBCH modulation symbols to the resources of the additional PBCH block and transmits them as the additional PBCH block.

[0103] The additional PBCH block according to this embodiment is transmitted by OFDM symbols associated with the corresponding SS / PBCH block.

[0104] As an example, the additional PBCH block according to this embodiment is transmitted from an OFDM symbol after a predetermined time offset from the start symbol of the corresponding SS / PBCH block. The predetermined time offset may be determined based on the SSB period. The predetermined time offset may be a predetermined number of OFDM symbols.

[0105] As another example, the additional PBCH block according to this embodiment may be transmitted on candidate resources for another SS / PBCH block within a half-frame including the corresponding SS / PBCH block. For example, when there are 4 candidate resources for the SS / PBCH block within a half-frame including the SS / PBCH block, the SS / PBCH block may be transmitted on 2 candidate resources, and the additional PBCH blocks may be transmitted on the remaining 2 candidate resources respectively.

[0106] As another example, the additional PBCH block according to this embodiment may be transmitted on symbols / slots not used for the SS / PBCH block within a half-frame including the corresponding SS / PBCH block. For example, when 5 slots are included within a half-frame including the SS / PBCH block and the SS / PBCH block can be transmitted in the first 2 slots, the other 3 slots may be used for transmitting the additional PBCH block.

[0107] The temporal positional relationship between the additional PBCH block according to this embodiment and the corresponding SS / PBCH block may be determined by the temporal positional relationship between the half-frame including the additional PBCH block and the half-frame including the corresponding SS / PBCH block, respectively. For example, the half-frame including the additional PBCH block may be the half-frame after a predetermined time offset from the half-frame including the corresponding SS / PBCH block. For example, the temporal position of the additional PBCH block within the half-frame including the additional PBCH block and the temporal position of the SS / PBCH block within the half-frame including the corresponding SS / PBCH block may be the same.

[0108] The starting sub-carrier of the additional PBCH block according to this embodiment may be a sub-carrier with a predetermined frequency offset added to the starting sub-carrier of the corresponding SS / PBCH block. However, when the value obtained by adding the frequency offset exceeds a certain value, the value obtained by subtracting the certain value may be used as the starting sub-carrier of the additional PBCH block. For example, when the value obtained by adding a predetermined frequency offset to the starting sub-carrier of the corresponding SS / PBCH block exceeds the bandwidth available for allocating the additional PBCH block, the value obtained by subtracting the bandwidth of the additional PBCH block from the available bandwidth may be used as the starting sub-carrier of the additional PBCH block.

[0109] FIG. 8 is a diagram showing an example of a half frame in which an additional PBCH block and one or more additional PBCH blocks are transmitted (which may also be referred to as a half frame with additional PBCH block or an additional PBCH burst set). FIG. 8 shows that a half frame containing an additional PBCH block exists between half frames containing SS / PBCH blocks that exist at a fixed period (SSB period), and the additional PBCH block is composed of 4 consecutive OFDM symbols. The additional PBCH block is transmitted in the resource corresponding to one SS / PBCH block, and within the additional PBCH block, there are additional PBCH and DMRS for the additional PBCH in the resource corresponding to the PBCH within the SS / PBCH block. For example, the additional PBCH and the DMRS for the additional PBCH may be mapped to the second, third, and fourth symbols within the additional PBCH block (OFDM symbols with OFDM symbol numbers 1, 2, and 3 relative to the start symbol of the additional PBCH block). The series of modulation symbols of the additional PBCH is composed of Msymb symbols, and from the first subcarrier to the 240th subcarrier (subcarriers with subcarrier numbers 0 to 239 relative to the start subcarrier of the additional PBCH block) of the second and fourth symbols within the additional PBCH block, and from the first subcarrier to the 48th subcarrier and from the 184th to the 240th subcarrier (subcarriers with subcarrier numbers 0 to 47 and 192 to 239 relative to the start subcarrier of the additional PBCH block) of the third symbol within the additional PBCH block, it may be mapped to the resources where the DMRS for the additional PBCH is not mapped.The sequence of symbols of DMRS for additional PBCH consists of 144 symbols, from the first sub - carrier of the second symbol and the fourth symbol in the additional PBCH block to the 240th sub - carrier (sub - carriers with sub - carrier numbers from 0 to 239 with respect to the starting sub - carrier of the additional PBCH block), and from the first sub - carrier of the third symbol in the additional PBCH block to the 48th sub - carrier and from the 184th to the 240th sub - carrier (sub - carriers with sub - carrier numbers from 0 to 47 and from 192 to 239 with respect to the starting sub - carrier of the additional PBCH block) in the additional PBCH block, and may be mapped one sub - carrier every 4 sub - carriers one by one.

[0110] FIG. 9 is a diagram showing another example of a half - frame in which an additional PBCH block and one or more additional PBCH blocks are transmitted according to this embodiment. FIG. 9 shows an example in which a half - frame containing an additional PBCH block exists between half - frames containing SS / PBCH blocks existing at a fixed period (SSB period), and the additional PBCH block is composed of three consecutive OFDM symbols. The additional PBCH block is transmitted in a resource corresponding to one SS / PBCH block, and additional PBCH or DMRS for additional PBCH exists in all resources within the additional PBCH block. FIG. 10 is a table showing an example of resources in which additional PBCH and DMRS for additional PBCH are arranged within the additional PBCH block. For example, the sequence of modulation symbols of additional PBCH is M symb2It may be mapped to a resource in which the DMRS for the additional PBCH is not mapped among the first sub-carrier to the 240th sub-carrier (sub-carriers with sub-carrier numbers from 0 to 239 with respect to the start sub-carrier of the additional PBCH block) of each of the three symbols within the additional PBCH block, which is composed of symbols. The symbol sequence of the DMRS for the additional PBCH is composed of 180 symbols, and may be mapped one sub-carrier at a time every 4 sub-carriers with respect to the first sub-carrier to the 240th sub-carrier (sub-carriers with sub-carrier numbers from 0 to 239 with respect to the start sub-carrier of the additional PBCH block) of the three symbols within the additional PBCH block. However, the number of symbols constituting the additional PBCH block may not be three symbols. For example, the additional PBCH block is composed of 4 symbols, and for the 240 sub-carriers of each symbol, the additional PBCH or the DMRS for the additional PBCH may be present. However, the number of sub-carriers constituting the additional PBCH block may not be 240 sub-carriers. For example, the additional PBCH block is composed of 180 sub-carriers and 4 OFDM symbols, and for the 180 sub-carriers of each symbol, the additional PBCH or the DMRS for the additional PBCH may be present.

[0111] FIG. 11 is a diagram showing an example of an additional PBCH block according to the present embodiment. FIG. 11 shows an example in which an additional PBCH block exists in a half-frame including an SS / PBCH block existing at a fixed period (SSB period), and the additional PBCH block is composed of four consecutive OFDM symbols. The additional PBCH block is transmitted in a resource corresponding to one SS / PBCH block, and the additional PBCH or the DMRS for the additional PBCH exists in all resources within the additional PBCH block. For example, the modulation symbol sequence of the additional PBCH is M symb2It may be mapped to a resource composed of symbols and not mapped with DMRS for the additional PBCH among the first sub - carrier to the 240th sub - carrier (sub - carriers with sub - carrier numbers from 0 to 239 with respect to the start sub - carrier of the additional PBCH block) of each of the 4 symbols in the additional PBCH block. The symbol sequence of DMRS for the additional PBCH is composed of 240 symbols and may be mapped one sub - carrier at a time for every 4 sub - carriers with respect to the first sub - carrier to the 240th sub - carrier (sub - carriers with sub - carrier numbers from 0 to 239 with respect to the start sub - carrier of the additional PBCH block) of the 4 symbols in the additional PBCH block. However, there may be no additional PBCH or DMRS for the additional PBCH for all resources in the additional PBCH block. For example, the additional PBCH block may be composed of 4 symbols, and 1 of them may be set to 0.

[0112] FIG. 12 is a diagram showing another example of the additional PBCH block according to the present embodiment. FIG. 12 shows an example in which an additional PBCH block exists in some slots within a half - frame including SS / PBCH blocks existing at a fixed period (SSB period), and the additional PBCH block is composed of 4 consecutive OFDM symbols. However, the slot in which the additional PBCH block is arranged may be a slot that does not include candidate resources for the SS / PBCH block. The additional PBCH block is transmitted in a resource corresponding to one SS / PBCH block, and there is an additional PBCH or DMRS for the additional PBCH for all resources in the additional PBCH block. For example, the modulation symbol sequence of the additional PBCH is M symb2It may be mapped to a resource in which the DMRS for the additional PBCH is not mapped among the first sub - carrier to the 240th sub - carrier (sub - carriers with sub - carrier numbers from 0 to 239 with respect to the start sub - carrier of the additional PBCH block) of each of the 4 symbols within the additional PBCH block, which is composed of symbols. The symbol series of the DMRS for the additional PBCH is composed of 240 symbols, and may be mapped one sub - carrier at a time every 4 sub - carriers with respect to the first sub - carrier to the 240th sub - carrier (sub - carriers with sub - carrier numbers from 0 to 239 with respect to the start sub - carrier of the additional PBCH block) of the 4 symbols within the additional PBCH block. However, there may be no additional PBCH or DMRS for the additional PBCH for all resources within the additional PBCH block. For example, the additional PBCH block may be composed of 4 symbols, one of which is set to 0, and the additional PBCH and the DMRS for the additional PBCH may exist in the remaining 3 symbols.

[0113] Different SSB indexes may be assigned to one or more additional PBCH blocks within a half - frame (additional PBCH burst set) containing the additional PBCH. An additional PBCH block to which a certain SSB index is assigned may be associated with the SS / PBCH block of that SSB index and may be periodically transmitted by the base station device 3. However, there may be multiple additional PBCH blocks to which the same SSB index is assigned for one SS / PBCH block. For example, within the SSB period, additional PBCH blocks to which the same SSB index is assigned may be transmitted multiple times.

[0114] The time position of the half-frame in which the additional PBCH block is mapped may be determined based on the information identifying the SFN included in the PBCH of the corresponding SS / PBCH block and / or the additional PBCH of the additional PBCH block and / or the information identifying the half-frame and the time offset between the corresponding SS / PBCH block and the additional PBCH block. However, the information identifying the SFN included in the additional PBCH of the additional PBCH block and / or the information identifying the half-frame may be the information identifying the SFN and the half-frame in which the corresponding SS / PBCH block is transmitted. The terminal device 1 that has received the additional PBCH block may identify the SFN and the half-frame in which the corresponding SS / PBCH block is transmitted based on the received additional PBCH block.

[0115] The SSB index is assigned to the additional PBCH block according to the temporal position within the transmitted half-frame. The terminal device 1 identifies the SSB index based on the information of the additional PBCH and / or the information of the reference signal included in the detected additional PBCH block.

[0116] For the SS / PBCH blocks with the same relative time within each SS burst set in a plurality of SS burst sets, the same SSB index may be assigned. It may be assumed that the SS / PBCH blocks with the same relative time within each SS burst set in a plurality of SS burst sets are QCL (or the same downlink transmission beam is applied). Also, it may be assumed that the antenna ports of the SS / PBCH blocks with the same relative time within each SS burst set in a plurality of SS burst sets are QCL with respect to the average delay, Doppler shift, and spatial correlation.

[0117] Within the period of a certain SS burst set, the SS / PBCH blocks and additional PBCH blocks to which the same SSB index is assigned may be assumed to be QCL with respect to average delay, average gain, Doppler spread, Doppler shift, and spatial correlation.

[0118] The terminal device 1 according to this embodiment receives an SS / PBCH block and a corresponding additional PBCH block. The terminal device 1 that has detected the PSS and SSS in the SS / PBCH block receives the PBCH in the SS / PBCH block and also receives the additional PBCH in the corresponding additional PBCH block. Since the PBCH in the SS / PBCH block and the additional PBCH in the corresponding additional PBCH block contain the same information, the terminal device 1 can improve the detection accuracy of the information contained in the PBCH. However, the terminal device 1 that receives the additional PBCH block may be only the terminal device 1 having a predetermined capability. For example, a terminal device 1 having a limited capability for purposes such as cost reduction and / or power consumption reduction of the device is referred to as corresponding to REDCAP (Reduction Cabpability). The terminal device 1 corresponding to REDCAP receives the SS / PBCH block and / or the additional PBCH block, and the terminal device 1 not corresponding to REDCAP receives only the SS / PBCH block and does not receive the additional PBCH block.

[0119] The terminal device 1 according to this embodiment may receive an SS / PBCH block in which PSS / SSS, PBCH, and DMRS for PBCH are mapped, which is transmitted in a certain radio frame, receive additional PBCH and DMRS for the additional PBCH, which are transmitted in the same or a different radio frame from the certain radio frame, and obtain the MIB of the transport block transmitted by the PBCH and the additional PBCH. However, the PBCH and the additional PBCH carry at least the MIB and additional bit information, and the frame number (SFN) of the radio frame in which the SS / PBCH block is transmitted may be specified based on the MIB and the additional bit information.

[0120] However, for the PBCH, a group of PBCH modulation symbols generated by performing a first scrambling process, a CRC addition process, a first channel coding process, a first rate matching process, a second scrambling process, and a modulation process on a bit sequence including the MIB and additional bit information may be mapped. For the additional PBCH, a group of PBCH modulation symbols generated by performing a third scrambling process, a CRC addition process, a second channel coding process, a second rate matching process, a fourth scrambling process, and a modulation process on a bit sequence including the MIB and additional bit information may be mapped. However, the first scrambling process and the third scrambling process may be scrambling processes based on a part of the bit information of the SFN indicating the frame number of the radio frame in which the SS / PBCH block is transmitted. However, a part of the bit information of the SFN may be information included in the additional bit information included in the PBCH and / or the additional PBCH. However, a part of the bit information of the SFN may be the 2nd LSB and 3rd LSB of the SFN. However, the second scrambling process may be a scrambling process based on the number of bits output by the first rate matching, and the fourth scrambling process may be a scrambling process based on the number of bits output by the second rate matching. However, the first scrambling process and the third scrambling process may be scrambling processes performed using the same bit sequence of the same scrambling sequence, and the second scrambling process and the fourth scrambling process may be scrambling processes performed using different bit sequences.

[0121] The terminal device 1 according to the present embodiment may receive a PSS / SSS, a PBCH, and an SS / PBCH block to which DMRS for the PBCH are mapped, transmitted in a certain radio frame, receive an additional PBCH and DMRS for the additional PBCH transmitted in the same or a different radio frame as the certain radio frame, and acquire the MIB of the transport block transmitted by the PBCH and the additional PBCH.

[0122] Hereinafter, the reference signals described in this embodiment include downlink reference signals, synchronization signals, SS / PBCH blocks, downlink DM-RSs, CSI-RSs, uplink reference signals, SRSs, and / or uplink DM-RSs. For example, in this embodiment, downlink reference signals, synchronization signals, and / or SS / PBCH blocks may be referred to as reference signals. The reference signals used in the downlink include downlink reference signals, synchronization signals, SS / PBCH blocks, downlink DM-RSs, CSI-RSs, etc. The reference signals used in the uplink include uplink reference signals, SRSs, and / or uplink DM-RSs, etc.

[0123] Also, the reference signals may be used for Radio Resource Measurement (RRM). Also, the reference signals may be used for beam management.

[0124] Beam management may be a procedure of the base station device 3 (in the case of the downlink) or the terminal device 1 (in the case of the uplink) to align the directivities of analog and / or digital beams in the transmitting device and the analog and / or digital beams in the receiving device (the terminal device 1 in the case of the downlink and the base station device 3 in the case of the uplink) to obtain beam gain.

[0125] Note that the following procedures may be included as procedures for configuring, setting, or establishing beam pair links. · Beam selection · Beam refinement · Beam recovery

[0126] For example, beam selection may be a procedure for selecting a beam in the communication between the base station device 3 and the terminal device 1. Also, beam improvement may be a procedure for selecting a beam with a higher gain or changing the beam between the optimal base station device 3 and the terminal device 1 due to the movement of the terminal device 1. Beam recovery may be a procedure for reselecting a beam when the quality of the communication link deteriorates due to blockage caused by obstacles or the passage of people in the communication between the base station device 3 and the terminal device 1.

[0127] Beam management may include beam selection and beam improvement. Beam recovery may include the following procedures. · Detection of beam failure · Discovery of a new beam · Transmission of a beam recovery request · Monitoring of the response to the beam recovery request

[0128] For example, when selecting the transmission beam of the base station device 3 in the terminal device 1, the RSRP (Reference Signal Received Power) of the SSS included in the CSI-RS or the SS / PBCH block may be used, or CSI may be used. Also, as a report to the base station device 3, a CSI-RS resource index (CRI: CSI-RS Resource Index) may be used, or an index indicated by a sequence of demodulation reference signals (DMRS) used for demodulation of the PBCH and / or PBCH included in the SS / PBCH block may be used.

[0129] In addition, when the base station device 3 instructs the terminal device 1 to use a beam, it indicates the time index of the CRI or SS / PBCH, and the terminal device 1 receives based on the indicated time index of the CRI or SS / PBCH. At this time, the terminal device 1 may set and receive a spatial filter based on the indicated time index of the CRI or SS / PBCH. Further, the terminal device 1 may receive using the assumption of quasi co-location (QCL). That a certain signal (such as an antenna port, a synchronization signal, a reference signal, etc.) is "QCL with" or "the assumption of QCL is used for" another signal (such as an antenna port, a synchronization signal, a reference signal, etc.) may be interpreted as meaning that a certain signal is associated with another signal.

[0130] If the long-term property of the channel in which a certain symbol is transmitted at a certain antenna port can be inferred from the channel in which a certain symbol is transmitted at the other antenna port, the two antenna ports are said to be QCL. The long-term property of the channel includes one or more of delay spread, Doppler spread, Doppler shift, average gain, and average delay. For example, when antenna port 1 and antenna port 2 are QCL with respect to the average delay, it means that the reception timing of antenna port 2 can be inferred from the reception timing of antenna port 1.

[0131] This QCL can also be extended to beam management. For this purpose, a spatially extended QCL may be newly defined. For example, as the long-term property of a channel in the assumption of a spatial-domain QCL, the angle of arrival (AoA, ZoA, etc.) and / or angle spread (such as ASA, ZSA) in a wireless link or channel, the angle of departure (AoD, ZoD, etc.) and its angle spread (such as ASD, ZSD), spatial correlation, and received spatial parameters may be considered.

[0132] For example, if it can be considered that there is QCL with respect to the received spatial parameter between antenna port 1 and antenna port 2, it means that the receive beam (receive spatial filter) for receiving the signal from antenna port 1 can infer the receive beam for receiving the signal from antenna port 2.

[0133] As QCL types, combinations of long-term properties that can be considered as QCL may be defined. For example, the following types may be defined. · Type A: Doppler shift, Doppler spread, average delay, delay spread · Type B: Doppler shift, Doppler spread · Type C: Average delay, Doppler shift · Type D: Received spatial parameter

[0134] The above QCL types may be set and / or indicated as Transmission Configuration Indication (TCI) for the assumption of QCL between one or two reference signals and PDCCH or PDSCH DMRS in the RRC and / or MAC layer and / or DCI. For example, when one state of the TCI when the terminal device 1 receives the PDCCH is that the index #2 of the SS / PBCH block and QCL type A + QCL type B are set and / or indicated, when the terminal device 1 receives the PDCCH DMRS, it may receive the DMRS of the PDCCH by regarding the Doppler shift, Doppler spread, average delay, delay spread, received spatial parameter, and long-term channel characteristics in the reception of the SS / PBCH block index #2 as the long-term channel characteristics of the channel, and perform synchronization and propagation path estimation. At this time, the reference signal indicated by the TCI (the SS / PBCH block in the above example) may be referred to as the source reference signal, and the reference signal (the PDCCH DMRS in the above example) affected by the long-term characteristics inferred from the long-term channel characteristics of the channel when receiving the source reference signal may be referred to as the target reference signal. Also, the TCI may be set in the RRC with one or more TCI states and a combination of the source reference signal and QCL type for each state, and indicated to the terminal device 1 by the MAC layer or DCI.

[0135] In this way, as beam management and beam indication / reporting, the operations of the base station device 3 and the terminal device 1 equivalent to beam management may be defined by the assumption of QCL in the spatial domain and radio resources (time and / or frequency).

[0136] FIG. 13 is a diagram showing an example of beamforming. A plurality of antenna elements are connected to one transceiver unit (TXRU) 50, and the phase is controlled by a phase shifter 51 for each antenna element, and a beam can be directed in an arbitrary direction with respect to the transmission signal by transmitting from the antenna element 52. Typically, the TXRU may be defined as an antenna port, and in the terminal device 1, only the antenna port may be defined. Since the directivity can be directed in an arbitrary direction by controlling the phase shifter 51, the base station device 3 can communicate with the terminal device 1 using a beam with high gain.

[0137] Hereinafter, the configuration of the device in this embodiment will be described.

[0138] FIG. 14 is a schematic block diagram showing the configuration of the terminal device 1 in this embodiment. As shown in the figure, the terminal device 1 includes a radio transceiver unit 10 and an upper layer processing unit 14. The radio transceiver unit 10 includes an antenna unit 11, an RF (Radio Frequency) unit 12, and a baseband unit 13. The upper layer processing unit 14 includes a media access control layer processing unit 15 and a radio resource control layer processing unit 16. The radio transceiver unit 10 is also referred to as a transmitter, a receiver, a monitor unit, or a physical layer processing unit. The upper layer processing unit 14 is also referred to as a processing unit 14, a measurement unit 14, a selection unit 14, a determination unit 14, or a control unit 14.

[0139] The upper layer processing unit 14 outputs uplink data (which may also be referred to as a transport block) generated by a user operation or the like to the radio transceiver unit 10. The upper layer processing unit 14 performs part or all of the processing of the Medium Access Control (MAC) layer, Packet Data Convergence Protocol (PDCP) layer, Radio Link Control (RLC) layer, and Radio Resource Control (RRC) layer. The upper layer processing unit 14 may have a function of acquiring bit information of the transport block of the MIB.

[0140] The MAC layer processing unit 15 included in the upper layer processing unit 14 performs the processing of the MAC layer (Medium Access Control layer). The MAC layer processing unit 15 controls the transmission of scheduling requests based on various setting information / parameters managed by the RRC layer processing unit 16.

[0141] The RRC layer processing unit 16 included in the upper layer processing unit 14 performs the processing of the RRC layer (Radio Resource Control layer). The RRC layer processing unit 16 manages various setting information / parameters of its own device. The RRC layer processing unit 16 sets various setting information / parameters based on the upper layer signal received from the base station device 3. That is, the RRC layer processing unit 16 sets various setting information / parameters based on the information indicating various setting information / parameters received from the base station device 3. The RRC layer processing unit 16 controls (specifies) resource allocation based on the downlink control information received from the base station device 3.

[0142] The wireless transceiver unit 10 performs physical layer processing such as modulation, demodulation, encoding, and decoding. The wireless transceiver unit 10 separates, demodulates, and decodes the signal received from the base station apparatus 3, and outputs the decoded information to the upper layer processing unit 14. The wireless transceiver unit 10 generates a transmission signal by modulating and encoding data, and transmits it to the base station apparatus 3 or the like. The wireless transceiver unit 10 outputs the upper layer signal (RRC message), DCI, etc. received from the base station apparatus 3 to the upper layer processing unit 14. Further, the wireless transceiver unit 10 generates and transmits an uplink signal (including PUCCH and / or PUSCH) based on an instruction from the upper layer processing unit 14. The wireless transceiver unit 10 may have a function of receiving PDCCH and / or PDSCH. The wireless transceiver unit 10 may have a function of transmitting one or more PUCCH and / or PUSCH. The wireless transceiver unit 10 may have a function of receiving DCI by PDCCH. The wireless transceiver unit 10 may have a function of outputting the DCI received by PDCCH to the upper layer processing unit 14. The wireless transceiver unit 10 may have a function of receiving PSS, SSS, PBCH, DMRS for PBCH, additional PBCH, and / or DMRS for additional PBCH. The wireless transceiver unit 10 may have a function of receiving an SS / PBCH block and / or an additional PBCH block.

[0143] The RF unit 12 converts the signal received via the antenna unit 11 into a baseband signal by quadrature demodulation (down convert), and removes unnecessary frequency components. The RF unit 12 outputs the processed analog signal to the baseband unit.

[0144] The baseband unit 13 converts the analog signal input from the RF unit 12 from an analog signal to a digital signal. The baseband unit 13 removes the portion corresponding to the CP (Cyclic Prefix) from the converted digital signal, performs a Fast Fourier Transform (FFT) on the signal from which the CP has been removed, and extracts the signal in the frequency domain.

[0145] The baseband unit 13 performs an Inverse Fast Fourier Transform (IFFT) on the data to generate OFDM symbols, adds a CP to the generated OFDM symbols to generate a baseband digital signal, and converts the baseband digital signal into an analog signal. The baseband unit 13 outputs the converted analog signal to the RF unit 12.

[0146] The RF unit 12 uses a low-pass filter to remove extra 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. Also, the RF unit 12 amplifies the power. Further, the RF unit 12 may have a function of determining the transmission power of the uplink signal and / or uplink channel transmitted in the serving cell. The RF unit 12 is also referred to as a transmission power control unit.

[0147] FIG. 15 is a schematic block diagram showing the configuration of the base station apparatus 3 of the present embodiment. As shown in the figure, the base station apparatus 3 includes a radio transceiver unit 30 and an upper layer processing unit 34. The radio transceiver 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 transceiver unit 30 is also referred to as a transmitter, a receiver, a monitor unit, or a physical layer processing unit. Also, a control unit for controlling the operations of each unit based on various conditions may be provided separately. The upper layer processing unit 34 is also referred to as a processing unit 34, a determination unit 34, or a control unit 34.

[0148] The upper layer processing unit 34 performs some or all of the processing of the Medium Access Control (MAC) layer, Packet Data Convergence Protocol (PDCP) layer, Radio Link Control (RLC) layer, and Radio Resource Control (RRC) layer. The upper layer processing unit 34 may be provided with a function of generating DCI based on the signal of the upper layer transmitted to the terminal device 1 and the time resource for transmitting PUSCH. The upper layer processing unit 34 may be provided with a function of outputting the generated DCI and the like to the radio transceiver unit 30. The upper layer processing unit 34 may be provided with a function of generating the bit information of the transport block of the MIB.

[0149] The Medium Access Control layer processing unit 35 included in the upper layer processing unit 34 performs the processing of the MAC layer. The Medium Access Control layer processing unit 35 performs the processing related to the scheduling request based on various setting information / parameters managed by the Radio Resource Control layer processing unit 36.

[0150] The radio resource control layer processing unit 36 included in the upper layer processing unit 34 performs the processing of the RRC layer. The radio resource control layer processing unit 36 generates DCI (uplink grant, downlink grant) including resource allocation information for the terminal device 1. The radio resource control layer processing unit 36 generates, or obtains from a higher node, DCI, downlink data (transport block (TB), random access response (RAR)) arranged on the PDSCH, system information, RRC message, MAC CE (Control Element), etc., and outputs them to the radio transceiver unit 30. Further, the radio resource control layer processing unit 36 manages various setting information / parameters of each of the terminal devices 1. The radio resource control layer processing unit 36 may set various setting information / parameters for each of the terminal devices 1 via a signal from the upper layer. That is, the radio resource control layer processing unit 36 transmits / informs information indicating various setting information / parameters. The radio resource control layer processing unit 36 may transmit / inform information for specifying the setting of one or more reference signals in a certain cell.

[0151] When the base station device 3 transmits an RRC message, MAC CE, and / or PDCCH to the terminal device 1 and the terminal device 1 performs processing based on the reception, the base station device 3 performs processing (control of the terminal device 1 and the system) assuming that the terminal device is performing the processing. That is, the base station device 3 sends an RRC message, MAC CE, and / or PDCCH to the terminal device 1 so as to cause the terminal device to perform processing based on the reception.

[0152] The radio transmission / reception unit 30 transmits signals at the upper layer (RRC messages), DCI, etc. to the terminal device 1. Also, the radio transmission / reception unit 30 receives the uplink signal transmitted from the terminal device 1 based on an instruction from the upper layer processing unit 34. The radio transmission / reception unit 30 may have a function of transmitting PDCCH and / or PDSCH. The radio transmission / reception unit 30 may have a function of receiving one or more PUCCHs and / or PUSCHs. The radio transmission / reception unit 30 may have a function of transmitting DCI by PDCCH. The radio transmission / reception unit 30 may have a function of transmitting the DCI output by the upper layer processing unit 34 by PDCCH. The radio transmission / reception unit 30 may have a function of transmitting PSS, SSS, PBCH, DMRS for PBCH, additional PBCH, and / or DMRS for additional PBCH. The radio transmission / reception unit 30 may have a function of transmitting an SS / PBCH block and / or an additional PBCH block. The radio transmission / reception unit 30 may have a function of transmitting an RRC message (which may be an RRC parameter). In addition, some functions of the radio transmission / reception unit 30 are the same as those of the radio transmission / reception unit 10, so the description thereof is omitted. Note that when the base station device 3 is connected to one or more transmission / reception points 4, some or all of the functions of the radio transmission / reception unit 30 may be included in each transmission / reception point 4.

[0153] Also, the upper layer processing unit 34 transmits (transfers) or receives control messages or user data between base station devices 3 or between a higher network device (MME, S-GW (Serving-GW)) and the base station device 3. In FIG. 15, other components of the base station device 3 and the transmission path of data (control information) between the components are omitted, but it is obvious that the base station device 3 has a plurality of blocks having other functions necessary for operating as the base station device 3 as components. For example, in the upper layer processing unit 34, there are a radio resource management layer processing unit and an application layer processing unit.

[0154] Note that the "section" in the figure is an element that realizes the functions and respective procedures of the terminal device 1 and the base station device 3, which can also be expressed by terms such as section, circuit, constituent device, device, unit, etc.

[0155] Each of the sections labeled with reference numerals 10 to 16 included in the terminal device 1 may be configured as a circuit. Each of the sections labeled with reference numerals 30 to 36 included in the base station device 3 may be configured as a circuit.

[0156] (1) The terminal device 1 in the first aspect of the present invention includes a receiving unit 10 that receives a first block (SS / PBCH block) to which a PSS, an SSS, a first PBCH (PBCH), and a first DMRS (DMRS for the PBCH) are mapped, and receives a second PBCH (additional PBCH) and a second DMRS (DMRS for the additional PBCH) in a resource different from the first block, and a processing unit 14 that acquires first bit information of a first transport block (transport block of the MIB). The first PBCH and the second PBCH carry a first bit string including the first bit information and second bit information (additional bit information), and the second bit information includes information of a part of the bit string of the frame number (SFN) of the radio frame in which the first block was transmitted.

[0157] (2) The base station apparatus 3 in the second aspect of the present invention transmits a first block (SS / PBCH block) to which PSS, SSS, a first PBCH (PBCH), and a first DMRS (DMRS for PBCH) are mapped, and transmits a second PBCH (additional PBCH) and a second DMRS (DMRS for additional PBCH) in a resource different from the first block. The base station apparatus 3 includes a transmission unit 30 and a processing unit 34 that generates first bit information of a first transport block (transport block of MIB). The first PBCH and the second PBCH carry a first bit string including the first bit information and second bit information (additional bit information), and the second bit information includes information of a part of a bit string of a frame number (SFN) of a radio frame in which the first block is transmitted.

[0158] (3) The terminal device 1 in the third aspect of the present invention includes a reception unit 10 that receives a first block (SS / PBCH block) to which PSS, SSS, a first PBCH (PBCH), and a first DMRS (DMRS for PBCH) are mapped, and receives a second PBCH (additional PBCH) and a second DMRS (DMRS for additional PBCH) in a resource different from the first block, and a processing unit 14 that acquires first bit information of a first transport block (transport block of MIB). A first modulation symbol group generated by performing a first scrambling process, a CRC addition process, a first channel encoding process, a first rate matching process, a second scrambling process, and a modulation process on a first bit string including the first bit information and second bit information (additional bit information) is mapped to the first PBCH, and a second modulation symbol group generated by performing a third scrambling process, a CRC addition process, a second channel encoding process, a second rate matching process, a fourth scrambling process, and a modulation process on a second bit string including the first bit information and third bit information (additional bit information) is mapped to the second PBCH.

[0159] (4) In a third aspect of the present invention, the first scrambling process may be performed based on a part of the bit sequence of the frame number of the radio frame to which the first block is transmitted, and the third scrambling process may be performed based on a part of the bit sequence of the frame number of the radio frame to which the first block is transmitted.

[0160] (5) In a third aspect of the present invention, the second scrambling process may be performed based on the number of bits of the bit sequence output by the first rate matching, and the fourth scrambling process may be performed based on the number of bits of the bit sequence output by the second rate matching.

[0161] (6) In a third aspect of the present invention, the two-bit information and the third-bit information may be the same bit information.

[0162] (7) The base station apparatus 3 in the fourth aspect of the present invention includes a transmission unit 30 that transmits a first block (SS / PBCH block) to which PSS, SSS, a first PBCH (PBCH), and a first DMRS (DMRS for PBCH) are mapped, and transmits a second PBCH (additional PBCH) and a second DMRS (DMRS for additional PBCH) in a resource different from the first block, and a processing unit 34 that generates first bit information of a first transport block (transport block of MIB). The first PBCH is mapped with a first modulation symbol group generated by performing a first scrambling process, a CRC addition process, a first channel encoding process, a first rate matching process, a second scrambling process, and a modulation process on a first bit sequence including the first bit information and second bit information (additional bit information). The second PBCH is mapped with a second modulation symbol group generated by performing a third scrambling process, a CRC addition process, a second channel encoding process, a second rate matching process, a fourth scrambling process, and a modulation process on a second bit sequence including the first bit information and third bit information (additional bit information).

[0163] (8) In a fourth aspect of the present invention, the first scrambling process may be performed based on a part of the bit sequence of the frame number of the radio frame in which the first block is transmitted, and the third scrambling process may be performed based on a part of the bit sequence of the frame number of the radio frame in which the first block is transmitted.

[0164] (9) In a fourth aspect of the present invention, the second scrambling process may be performed based on the number of bits of the bit sequence output by the first rate matching, and the fourth scrambling process may be performed based on the number of bits of the bit sequence output by the second rate matching.

[0165] (10) In a fourth aspect of the present invention, the second bit information and the third bit information may be the same bit information.

[0166] (11) The terminal device 1 in the fifth aspect of the present invention includes a receiving unit 10 that receives a first PBCH (PBCH) included in a first block (SS / PBCH block) transmitted in a first time period, and a second PBCH (additional PBCH) included in a second block (additional PBCH block) transmitted from an OFDM symbol after a first time offset from the first OFDM symbol at the head of the first block, and a processing unit 14 that acquires first bit information of a first transport block (transport block of MIB). The first PBCH and the second PBCH carry the first bit information. The first block is composed of 4 OFDM symbols including PSS, SSS, the first PBCH, and first DMRS (DMRS for PBCH). The second block is composed of 3 OFDM symbols including the second PBCH and second DMRS.

[0167] (12) In the fifth aspect of the present invention, the first time offset may be a time length of half a frame or more.

[0168] (13) In a fifth aspect of the present invention, the first time offset may be defined by a predetermined number of OFDM symbols.

[0169] (14) The base station apparatus 3 in a sixth aspect of the present invention transmits a first PBCH (PBCH) included in a first block (SS / PBCH block) in a first time period, and transmits a second PBCH (additional PBCH) included in a second block (additional PBCH block) transmitted from an OFDM symbol after a first time offset from the first OFDM symbol at the head of the first block. The base station apparatus 3 includes a transmission unit 30 and a processing unit 34 that generates first bit information of a first transport block (transport block of MIB). The first PBCH and the second PBCH carry the first bit information. The first block is composed of 4 OFDM symbols including a PSS, an SSS, the first PBCH, and a first DMRS (DMRS for PBCH). The second block is composed of 3 OFDM symbols including the second PBCH and a second DMRS (DMRS for additional PBCH).

[0170] (15) In a sixth aspect of the present invention, the first time offset may be a time length equal to or longer than a half frame.

[0171] (16) In a sixth aspect of the present invention, the first time offset may be defined by a predetermined number of OFDM symbols.

[0172] As a result, the terminal device 1 can communicate with the base station device 3 efficiently. For example, in DCI for scheduling data of different services (such as eMBB, URLLC, and / or mMTC, etc.), an appropriate notification method for each service can be used when indicating the time resource for receiving PDSCH and / or the time resource for transmitting PUSCH. Also, the base station device 3 can communicate with the terminal device 1 efficiently. For example, in DCI for scheduling data of different services, an appropriate notification method for each service can be used when indicating the time resource for transmitting PDSCH and / or the time resource for receiving PUSCH.

[0173] A program that operates on a device according to an aspect of the present invention may be a program that controls a Central Processing Unit (CPU) or the like to function a computer so as to realize the functions of the embodiments according to an aspect of the present invention. The program or the information handled by the program is temporarily stored in a volatile memory such as a Random Access Memory (RAM), a non-volatile memory such as a flash memory, a Hard Disk Drive (HDD), or other storage device systems.

[0174] In addition, a program for realizing the functions of the embodiments according to an aspect of the present invention may be recorded on a computer-readable recording medium. The functions may be realized by causing a computer system to read and execute the program recorded on this recording medium. Here, the "computer system" refers to a computer system built in a device and including hardware such as an operating system and peripheral devices. Also, the "computer-readable recording medium" may be a semiconductor recording medium, an optical recording medium, a magnetic recording medium, a medium that holds a program dynamically for a short time, or other recording media readable by a computer.

[0175] In addition, each functional block or various features of the device used in the above-described embodiments can be implemented or executed by an electric circuit, for example, an integrated circuit or a plurality of integrated circuits. The electric circuit designed to execute the functions described in this specification may include a general-purpose use processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gates or transistor logic, discrete hardware components, or a combination thereof. The general-purpose use processor may be a microprocessor, or may be a conventional type processor, controller, microcontroller, or state machine. The above-described electric circuit may be composed of a digital circuit or an analog circuit. Further, when an integrated circuit technology that replaces the current integrated circuit appears due to the progress of semiconductor technology, one or more aspects of the present invention can also use a new integrated circuit by such technology.

[0176] In addition, in the embodiment related to one aspect of the present invention, an example applied to a communication system composed of a base station device and a terminal device has been described, but it is also applicable to a system in which terminals communicate with each other, such as D2D (Device to Device).

[0177] Note that the present invention of the present application is not limited to the above-described embodiments. In the embodiments, an example of the device has been described, but the present invention of the present application is not limited thereto, and it can also be applied to stationary or non-mobile electronic devices installed indoors and outdoors, for example, terminal devices or communication devices such as AV devices, kitchen devices, cleaning and washing devices, air conditioning devices, office devices, vending machines, and other living devices.

[0178] As described above in detail with reference to the drawings regarding the embodiments of the present invention, the specific configuration is not limited to this embodiment, and design changes and the like within the scope not departing from the gist of the present invention are also included. Also, one aspect of the present invention can be variously modified within the scope shown in 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. Further, configurations in which elements described in the above respective embodiments and elements having similar effects are replaced with each other are also included.

Industrial Applicability

[0179] One aspect of the present invention can be used, for example, in a communication system, communication equipment (e.g., a mobile phone device, a base station device, a wireless LAN device, or a sensor device), an integrated circuit (e.g., a communication chip), or a program, etc.

Explanation of Reference Numerals

[0180] 1 (1A, 1B) Terminal device 3 Base station device 4 Transmission and reception point (TRP) 10 Wireless transmission and reception unit 11 Antenna unit 12 RF unit 13 Baseband unit 14 Upper layer processing unit 15 Medium access control layer processing unit 16 Radio resource control layer processing unit 30 Wireless transmission and reception unit 31 Antenna unit 32 RF unit 33 Baseband unit 34 Upper layer processing unit 35 Medium access control layer processing unit 36 Radio resource control layer processing unit 50 Transmission unit (TXRU) 51 Phase shifter 52 Antenna element

Claims

1. A terminal device, comprising: a receiving unit that receives a first block on which PSS, SSS, a first PBCH, and a first DMRS are mapped, and receives a second block on which a second PBCH and a second DMRS are mapped in a resource different from the first block; a processing unit that acquires first bit information of a first transport block; wherein the first PBCH carries a bit sequence including the first bit information and second bit information; the second PBCH carries a bit sequence including the first bit information and third bit information; the third bit information includes part of the bit sequence of the frame number of the radio frame in which the first block is transmitted; a terminal device.

2. On the first PBCH, a first modulation symbol group generated by performing a first scrambling process, a CRC addition process, a first channel coding process, a first rate matching process, a second scrambling process, and a modulation process on the bit sequence including the first bit information and the second bit information is mapped; on the second PBCH, a second modulation symbol group generated by performing a third scrambling process, a CRC addition process, a second channel coding process, a second rate matching process, a fourth scrambling process, and a modulation process on the bit sequence including the first bit information and the third bit information is mapped. The terminal device according to Claim 1.

3. The first scrambling process is performed based on part of the bit sequence of the frame number of the radio frame in which the first block is transmitted; the third scrambling process is performed based on part of the bit sequence of the frame number of the radio frame in which the first block is transmitted. The terminal device according to Claim 2.

4. The second scrambling process is performed based on the number of bits of the bit sequence output by the first rate matching process; the fourth scrambling process is performed based on the number of bits of the bit sequence output by the second rate matching process. The terminal device according to Claim 2.

5. The first block is transmitted from a base station device in a first time period; the second block is transmitted from the base station device from an OFDM symbol after a first time offset from the first OFDM symbol at the head of the first block; the first block is composed of 4 OFDM symbols. ​ ​ The second block is composed of 3 OFDM symbols. The terminal device according to claim 1. **Claim 6** A base station device, a transmission unit that transmits a first block to which PSS, SSS, a first PBCH, and a first DMRS are mapped, and transmits a second block to which a second PBCH and a second DMRS are mapped in a resource different from the first block; a processing unit that generates first bit information of a first transport block, and the first PBCH carries a bit string including the first bit information and second bit information, the second PBCH carries a bit string including the first bit information and third bit information, the third bit information includes part of the bit string of the frame number of the radio frame in which the first block is transmitted Base station device. **Claim 7** On the first PBCH, a first modulation symbol group generated by performing a first scrambling process, a CRC addition process, a first channel encoding process, a first rate matching process, a second scrambling process, and a modulation process on the bit string including the first bit information and the second bit information is mapped, On the second PBCH, a third scrambling process, a CRC addition process, a second channel encoding process, a second rate matching process, a fourth scrambling process, and a modulation process are performed on the bit string including the first bit information and the third bit information, and a second modulation symbol group generated thereby is mapped. The base station device according to claim 6. **Claim 8** The first scrambling process is performed based on a part of the bit string of the frame number of the radio frame in which the first block is transmitted, The third scrambling process is performed based on a part of the bit string of the frame number of the radio frame in which the first block is transmitted. The base station device according to claim 7. **Claim 9** The second scrambling process is performed based on the number of bits of the bit string output in the first rate matching process, The fourth scrambling process is performed based on the number of bits of the bit string output in the second rate matching process. The base station device according to claim 7. **Claim 10** The transmitting unit transmits the first block in a first time period, and transmits the second block from an OFDM symbol after a first time offset from the first OFDM symbol at the head of the first block. The first block is composed of 4 OFDM symbols. The second block is composed of 3 OFDM symbols. The base station device according to claim 6.

11. A communication method for a terminal device, comprising: receiving a first block to which PSS, SSS, a first PBCH, and a first DMRS are mapped, and receiving a second block to which a second PBCH and a second DMRS are mapped in a resource different from that of the first block; acquiring first bit information of a first transport block; the first PBCH carries a bit string including the first bit information and second bit information; the second PBCH carries a bit string including the first bit information and third bit information; the third bit information includes part of the bit string of the frame number of the radio frame in which the first block is transmitted. Communication method.

12. For the first PBCH, a first scrambling process, a CRC addition process, a first channel coding process are performed on the bit string including the first bit information and the second bit information. A first modulation symbol group generated by performing a first rate matching process, a second scrambling process, and a modulation process is mapped. For the second PBCH, a third scrambling process, a CRC addition process, a second channel coding process are performed on the bit string including the first bit information and the third bit information. A second modulation symbol group generated by performing a second rate matching process, a fourth scrambling process, and a modulation process is mapped. The communication method according to claim 11.

13. The first block is transmitted from a base station device in a first time period. The second block is transmitted from a base station device from an OFDM symbol after a first time offset from the first OFDM symbol at the head of the first block. The first block is composed of 4 OFDM symbols. The second block is composed of 3 OFDM symbols. The communication method according to claim 11.

14. A communication method for a base station device, comprising: Transmit a first block to which PSS, SSS, a first PBCH, and a first DMRS are mapped, and transmit a second block to which a second PBCH and a second DMRS are mapped on a resource different from the first block. Generate first bit information of a first transport block. The first PBCH carries a bit sequence including the first bit information and second bit information. The second PBCH carries a bit sequence including the first bit information and third bit information. The third bit information includes part of the bit sequence of the frame number of the radio frame that transmitted the first block. Communication method.

15. For the first PBCH, a first scrambling process, CRC addition process, first channel coding process are performed on the bit sequence including the first bit information and the second bit information. A first modulation symbol group generated by performing a first rate matching process, a second scrambling process, and a modulation process is mapped. For the second PBCH, a third scrambling process, CRC addition process, second channel coding process are performed on the bit sequence including the first bit information and the third bit information. A second modulation symbol group generated by performing a second rate matching process, a fourth scrambling process, and a modulation process is mapped. The communication method according to claim 14.

16. Transmit the first block in a first time period, and transmit the second block from an OFDM symbol after a first time offset from the first OFDM symbol at the head of the first block. The first block is composed of 4 OFDM symbols. The second block is composed of 3 OFDM symbols. The communication method according to claim 14.

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