Terminal device, base station device, and communication method

Abstract

A terminal device that communicates with a base station device using a cell including a first downlink carrier bandwidth part and a second downlink carrier bandwidth part includes a reception unit that monitors a PDCCH in the first downlink carrier bandwidth part, and a decoding unit that decodes a PDSCH in the first downlink carrier bandwidth part based on a DCI format included in the PDCCH. The DCI format includes frequency domain resource allocation information of the PDSCH, and a size of the frequency resource allocation information is given based on at least a number of resource blocks included in the second downlink carrier bandwidth part.

Description

[0001] This application is a divisional application of application No. 201880070571.9 entitled "Terminal device, base station device and communication method" filed with the China National Intellectual Property Administration on November 2, 2018. Technical Field

[0002] This invention relates to terminal devices, base station devices, and communication methods.

[0003] This application claims priority to Japanese Patent Application No. 2017-212606, filed on November 2, 2017, the contents of which are incorporated herein by reference. Background Technology

[0004] The 3rd Generation Partnership Project (3GPP) studied radio access methods and radio networks for cellular mobile communications (hereinafter referred to as "Long Term Evolution (LTE)" or "Evolved Universal Terrestrial Radio Access (EUTRA)"). In LTE, base station equipment is also called eNodeB (evolved NodeB), and terminal equipment is also called UE (User Equipment). LTE is a cellular communication system that uses multiple base station equipment configured in a cell-like structure to cover an area. A single base station equipment can manage multiple serving cells.

[0005] In 3GPP, research was conducted on the next-generation standard (NR: New Radio) in order to make recommendations to IMT (International Mobile Telecommunication)-2020, which is the standard for next-generation mobile communication systems developed by the International Telecommunication Union (ITU) (Non-Patent Document 1). NR is required to meet the requirements of the following three scenarios within a single technology framework: eMBB (enhanced Mobile Broadband), mMTC (massive Machine-Type Communication), and URLLC (Ultra-Reliable and Low-Latency Communication).

[0006] Existing technical documents

[0007] Non-patent literature

[0008] Non-patent literature 1: “New SID proposal: Study on New RadioAccess Technology”, RP-160671, NTT docomo, 3GPPTSG RAN Meeting #71, Goteborg, Sweden, March 7-10, 2016. Summary of the Invention

[0009] The problem the invention aims to solve

[0010] One aspect of the present invention provides a terminal device for efficient communication, a communication method for the terminal device, a base station device for efficient communication, and a communication method for the base station device.

[0011] Technical solution

[0012] (1) The first aspect of the present invention is a terminal device that communicates with a base station device using a cell including a first downlink carrier bandwidth and a second downlink carrier bandwidth, comprising: a receiving unit that monitors a PDCCH in the first downlink carrier bandwidth; and a decoding unit that decodes a PDSCH in the first downlink carrier bandwidth based on a DCI format included in the PDCCH, wherein the DCI format includes frequency domain resource allocation information of the PDSCH, and the size of the frequency resource allocation information is given at least based on the number of resource blocks included in the second downlink carrier bandwidth.

[0013] Furthermore, in the first embodiment of the present invention, the first downlink carrier portion bandwidth is the downlink active carrier portion bandwidth, and the second downlink carrier portion bandwidth corresponds to the control resource set set in the MIB.

[0014] Furthermore, in the first embodiment of the present invention, the first downlink carrier portion bandwidth is the downlink active carrier portion bandwidth, and the second downlink carrier portion bandwidth is set in the system information.

[0015] Furthermore, in the first aspect of the present invention, the DCI format is a first DCI format, and the size of the frequency domain resource allocation information included in the second DCI format is given at least based on the number of resource blocks included in the first downlink carrier portion bandwidth.

[0016] (2) The second aspect of the present invention is a base station device that uses a cell including a first downlink carrier bandwidth and a second downlink carrier bandwidth to communicate with a terminal device, wherein the device includes a transmitting unit that transmits PDCCH and PDSCH in the first downlink carrier bandwidth, wherein the DCI format included in the PDCCH includes frequency domain resource allocation information of the PDSCH, and the size of the frequency resource allocation information is given at least based on the number of resource blocks included in the second downlink carrier bandwidth.

[0017] Furthermore, in the second embodiment of the present invention, the first downlink carrier portion bandwidth is the downlink active carrier portion bandwidth, and the second downlink carrier portion bandwidth corresponds to the control resource set set in the MIB.

[0018] Furthermore, in the second embodiment of the present invention, the first downlink carrier portion bandwidth is the downlink active carrier portion bandwidth, and the second downlink carrier portion bandwidth is set in the system information.

[0019] Furthermore, in the second aspect of the present invention, the DCI format is a first DCI format, and the size of the frequency domain resource allocation information included in the second DCI format is given at least based on the number of resource blocks included in the first downlink carrier portion bandwidth.

[0020] (3) The third aspect of the present invention is a communication method for a terminal device that communicates with a base station device using a cell including a first downlink carrier bandwidth and a second downlink carrier bandwidth, comprising the following steps: monitoring the PDCCH in the first downlink carrier bandwidth; and decoding the PDSCH in the first downlink carrier bandwidth based on the DCI format included in the PDCCH, wherein the DCI format includes frequency domain resource allocation information of the PDSCH, and the size of the frequency resource allocation information is given at least based on the number of resource blocks included in the second downlink carrier bandwidth.

[0021] (4) The fourth aspect of the present invention is a communication method for a base station device to communicate with a terminal device using a cell including a first downlink carrier bandwidth and a second downlink carrier bandwidth, wherein the method includes the step of transmitting PDCCH and PDSCH in the first downlink carrier bandwidth, wherein the DCI format included in the PDCCH includes frequency domain resource allocation information of the PDSCH, and the size of the frequency resource allocation information is given at least based on the number of resource blocks included in the second downlink carrier bandwidth.

[0022] Beneficial effects

[0023] According to one aspect of the present invention, the terminal device can perform communication efficiently. Furthermore, the base station device can perform communication efficiently. Attached Figure Description

[0024] Figure 1 This is a conceptual diagram of a wireless communication system according to one embodiment of this invention.

[0025] Figure 2 N represents one embodiment of this method. slot symb An example of the relationship between the subcarrier spacing setting μ, the time slot setting, and the CP setting.

[0026] Figure 3 This is a schematic diagram illustrating an example of a resource grid in a subframe of one embodiment of this work.

[0027] Figure 4 This is a diagram illustrating an example of a method for determining the size of a resource allocation information field in one embodiment of this invention.

[0028] Figure 5 This is a diagram illustrating an example of a CBP indication information field in one embodiment of this work.

[0029] Figure 6 This is a diagram illustrating an example of the mapping of SS blocks in one embodiment of this work.

[0030] Figure 7 This is a diagram illustrating an embodiment of carrier portion bandwidth adaptation in this implementation.

[0031] Figure 8 This is a diagram illustrating an example of the operation of a timer in one embodiment of this invention.

[0032] Figure 9 This is a diagram illustrating an example of a resource block allocation method in one embodiment of this invention.

[0033] Figure 10 This is a schematic block diagram illustrating the configuration of a terminal device 1 according to one embodiment of this invention.

[0034] Figure 11 This is a schematic block diagram illustrating the configuration of a base station device 3 according to one embodiment of this invention. Detailed Implementation

[0035] The embodiments of the present invention will be described below.

[0036] Figure 1 This is a conceptual diagram of a wireless communication system according to one embodiment of this invention. Figure 1 In this wireless communication system, there are terminal devices 1A to 1C and base station device 3. Hereinafter, terminal devices 1A to 1C will also be referred to as terminal device 1.

[0037] The frame structure will be explained below.

[0038] In one embodiment of the wireless communication system, at least OFDM (Orthogonal Frequency Division Multiplexing) is used. OFDM symbols, which are time-domain units of OFDM, include at least one or more subcarriers, which are converted into time-continuous signals during baseband signal generation.

[0039] The subcarrier spacing (SCS) can be determined by the subcarrier spacing Δf = 2. μ • 15kHz is given. For example, μ can be any value from 0 to 5. The μ used to set the subcarrier spacing can be given by the upper-layer parameter (subcarrier spacing setting μ), which is used for the carrier bandwidth part (CBP).

[0040] In one embodiment of the wireless communication system, the time unit T is used. s To represent the length of the time domain. The time unit is T. s By T s =1 / (Δf) max ·N f Δf is given by ) max This can be the maximum subcarrier spacing supported in a wireless communication system according to one embodiment of this invention. Δf max It can also be Δf max = 480kHz. Time unit T s Also known as T sThe constant κ can be κ = Δf max ·N f / (Δf ref N f，ref ) = 64. Δf ref 15kHz, N f，ref The value is 2048.

[0041] The constant κ can represent the reference subcarrier spacing and T. s The value of the relationship. The constant κ can be used for the length of the subframe. The number of time slots included in the subframe can be given at least based on the constant κ. Δf ref It is the reference subcarrier spacing, N f，ref It is the value corresponding to the reference subcarrier spacing.

[0042] Downlink and / or uplink transmissions consist of frames of 10 ms in length. Each frame comprises 10 subframes. Each subframe is 1 ms long. The frame length may be independent of the subcarrier spacing Δf; that is, the frame configuration may not be based on μ.

[0043] The number and index of the time slots included in the subframe can be given for setting the subcarrier spacing configuration (μ). For example, the first time slot number n μ s It can be 0 to N within the subframe subframe ，μ slot The values ​​are given in ascending order within the range. The number of time slots included in the frame and their indices can be given for setting the subcarrier spacing μ. For example, the second time slot number n... μ s，f It can be 0 to N within the frame. frame，μ slot The range is given in ascending order. Consecutive N values... slot symb One OFDM symbol can be included in one time slot. N slot symb It can be based on at least some or all of the slot configuration and CP (Cyclic Prefix) settings. The slot configuration can be given through the higher-level parameter `slot_configuration`. The CP setting can be based at least on the higher-level parameter.

[0044] Figure 2 N represents one embodiment of this method. slot symbAn example of the relationship between the subcarrier spacing setting μ, the time slot setting, and the CP setting. Figure 2 In Figure A, with the time slot set to 0 and the CP set to normal CP (normal cyclic prefix), N slot symb =14, N frame，μ slot =40, N subframe，μ slot =4. Furthermore, in Figure 2 In Figure B, with the time slot set to 0 and CP set to extended cyclic prefix, N slot symb =12, N frame，μ slot =40, N subframe，μ slot =4. N in time slot setting 0 slot symb This can correspond to N in time slot setting 1. slot symb 2 times.

[0045] The following is an explanation of physical resources.

[0046] Antenna ports are defined as follows: a channel transmitting symbols at one antenna port can be estimated based on a channel transmitting other symbols at the same antenna port. When the large-scale property of a channel transmitting symbols at one antenna port can be estimated based on a channel transmitting symbols at another antenna port, the two antenna ports are said to be QCL (Quasi Co-Located). The large-scale property can be a long-range characteristic of the channel. The large-scale property can include at least some or all of the delay spread, Doppler spread, Doppler shift, average gain, average delay, and spatial Rx parameters. QCL for the first and second antenna ports with respect to beam parameters can mean that the receiver's assumed receive beam for the first antenna port is the same as the receiver's assumed receive beam for the second antenna port. QCL for the first and second antenna ports with respect to beam parameters can also mean that the receiver's assumed transmit beam for the first antenna port is the same as the receiver's assumed transmit beam for the second antenna port. Terminal device 1 can assume that both antenna ports are QCLs if the large-scale characteristics of the channel transmitting symbols at one antenna port can be estimated based on the channel transmitting symbols at the other antenna port. Alternatively, it can be assumed that both antenna ports are QCLs.

[0047] Given N μ RB，x N RB sc Subcarriers and N (μ) symb N subframe，μ symb The resource grids of each OFDM symbol are used for setting the subcarrier spacing and the carrier set, respectively. μ RB，x This can represent the number of resource blocks given for setting the subcarrier spacing μ for carrier x. Carrier x represents either a downlink carrier or an uplink carrier. That is, x is "DL" or "UL". N μ RB It contains N μ RB，DL and N μ RB，UL the title. N RB scThis can represent the number of subcarriers included in a resource block. A resource grid can be given by each antenna port p and / or by each subcarrier spacing setting μ and / or by each transmission direction setting. A transmission direction includes at least a downlink (DL) and an uplink (UL). Hereinafter, the set of parameters including at least some or all of the antenna port p, subcarrier spacing setting μ, and transmission direction settings is also referred to as the first radio parameter set. That is, a resource grid can be given for each first radio parameter set.

[0048] The carrier corresponding to the serving cell in the downlink is called the downlink carrier (or downlink component carrier). The carrier corresponding to the serving cell in the uplink is called the uplink carrier (uplink component carrier). The downlink component carrier and the uplink component carrier are collectively referred to as component carriers.

[0049] Each element in the resource grid given by each first wireless parameter set is called a resource element. A resource element is determined by its frequency domain index k and its time domain index 1. The resource element determined by its frequency domain index k and its time domain index 1 is also called a resource element (k, l). The frequency domain index k represents 0 to N. μ RB N RB sc Any value from -1. N μ RB This can be the number of resource blocks given for setting the subcarrier spacing μ. N RB sc N is the number of subcarriers included in the resource block. RB sc =12. The frequency domain index k can correspond to the subcarrier index. The time domain index 1 can correspond to the OFDM symbol index.

[0050] Figure 3 This is a schematic diagram illustrating an example of a resource grid in a subframe of one embodiment of this work. Figure 3 In the resource grid, the horizontal axis represents the time domain index 1, and the vertical axis represents the frequency domain index k. Within a subframe, the frequency domain of the resource grid can include N. μ RB N RB sc The time domain of the resource grid can include 14.2 subcarriers. μ Number of OFDM symbols. A resource block is composed of N... RB sc A resource block can correspond to one OFDM symbol in the time domain. It can also correspond to one or more time slots. Furthermore, it can correspond to a subframe.

[0051] Terminal device 1 can instruct the use of only a subset of the resource grid for transmission and reception. This subset of the resource grid can also be called the carrier portion bandwidth, which can be given by upper-layer parameters and / or DCI. The carrier portion bandwidth is also referred to as the bandwidth part (BP). That is, the terminal device can also instruct the use of only a portion of the resources within the resource grid for transmission and reception, without specifying the use of the entire set of resources. A carrier portion bandwidth can consist of multiple resource blocks in the frequency domain. A carrier portion bandwidth can also consist of multiple consecutive resource blocks in the frequency domain. The carrier portion bandwidth is also called the Bandwidth Part (BWP). The carrier portion bandwidth set for the downlink carrier is also called the downlink carrier portion bandwidth. The carrier portion bandwidth set for the uplink carrier is also called the uplink carrier portion bandwidth.

[0052] A set of downlink carrier bandwidths can be configured for each serving cell. This set of downlink carrier bandwidths can include one or more downlink carrier bandwidths. Similarly, a set of uplink carrier bandwidths can be configured for each serving cell. This set of uplink carrier bandwidths can also include one or more uplink carrier bandwidths.

[0053] The parameters of the upper layer are those included in the signals of the upper layer. These upper-layer signals can be RRC (Radio Resource Control) signaling or MAC CE (Medium Access Control Element). Here, the upper-layer signals can be either RRC layer signals or MAC layer signals.

[0054] The upper-layer signal can be common RRC signaling. Common RRC signaling must possess at least some or all of the following features C1 to C3: Feature C1) Mapped to the BCCH logical channel or CCCH logical channel; Feature C2) Includes at least the radioResourceConfigCommon information element; Feature C3) Mapped to PBCH.

[0055] The `radioResourceConfigCommon` information element may include information representing settings common to the serving cell. Settings common to the serving cell may include at least PRACH settings. These PRACH settings may represent at least a set of one or more random access preamble indices. These PRACH settings may also represent at least the time / frequency resources of the PRACH.

[0056] The upper-layer signal can also be dedicated RRC signaling. Dedicated RRC signaling must possess at least some or all of the following characteristics D1 to D2: Characteristic D1) Mapped to the DCCH logical channel; Characteristic D2) Includes at least the radioResourceConfigDedicated information element.

[0057] The `radioResourceConfigDedicated` information element may include at least information indicating settings specific to terminal device 1. The `radioResourceConfigDedicated` information element may also include at least information indicating settings for carrier portion bandwidth 512 and / or carrier portion bandwidth 513. The setting of carrier portion bandwidth 512 may at least indicate the frequency resource of that carrier portion bandwidth 512. The setting of carrier portion bandwidth 513 may at least indicate the frequency resource of that carrier portion bandwidth 513.

[0058] For example, MIB, first system information, and second system information can be included in common RRC signaling. Furthermore, messages mapped to the DCCH logical channel and including at least radioResourceConfigCommon (a higher-level message) can be included in common RRC signaling. Additionally, messages mapped to the DCCH logical channel but excluding radioResourceConfigCommon (a higher-level message) can be included in dedicated RRC signaling. Furthermore, messages mapped to the DCCH logical channel and including at least radioResourceConfigDedicated (a higher-level message) can be included in dedicated RRC signaling.

[0059] The first system information may include at least the time index of the SS (Synchronization Signal) block (SS / PBCH block). The first system information may also include at least information associated with PRACH resources. The first system information may also include at least information associated with the initial connection settings. The second system information may be system information other than the first system information.

[0060] The radioResourceConfigDedicated information element may include at least the information associated with the PRACH resource. The radioResourceConfigDedicated information element may also include at least the information associated with the initial connection settings.

[0061] The physical channels and physical signals of various schemes in this embodiment will be described below.

[0062] An uplink physical channel can correspond to a set of resource elements that transmit information generated at the upper layer. An uplink physical channel is a physical channel used in the uplink. In one embodiment of this wireless communication system, at least some or all of the following uplink physical channels are used.

[0063] • PUCCH (Physical Uplink Control Channel)

[0064] • PUSCH (Physical Uplink Shared Channel)

[0065] • PRACH (Physical Random Access Channel)

[0066] PUCCH can be used to transmit uplink control information (UCI). Uplink control information includes some or all of the following: channel state information (CSI) of the downlink physical channel, scheduling request (SR), and HARQ-ACK (Hybrid Automatic Repeat request ACK) for downlink data (TB, MAC PDU, DL-SCH, PDSCH). HARQ-ACK can represent either ACK (acknowledgment) or NACK (negative-acknowledgment) corresponding to the downlink data.

[0067] HARQ-ACK can also represent ACK or NACK corresponding to one or more CBGs (Code Block Groups) included in the downlink data. HARQ-ACK is also referred to as HARQ feedback, HARQ information, HARQ control information, and ACK / NACK.

[0068] A scheduling request can be used at least to request PUSCH (UL-SCH: Uplink-Shared Channel) resources for initial transmission.

[0069] Channel State Information (CSI) includes at least a Channel Quality Indicator (CQI) and a Rank Indicator (RI). The CQI may include a Precoder Matrix Indicator (PMI). The CQI is an indicator associated with channel quality (transmission strength), and the PMI indicates precoding. The RI indicates the transmission rank (or transmission layer number).

[0070] PUSCH is used to transmit uplink data (TB, MAC PDU, UL-SCH, PUSCH). PUSCH can also be used to transmit HARQ-ACK and / or channel state information along with uplink data. Furthermore, PUSCH can also be used to transmit only channel state information or only HARQ-ACK and channel state information. PUSCH is used to transmit random access messages.

[0071] PRACH is used to send the random access preamble (Random Access Message 1). PRACH indicates the initial connection establishment process, the handover procedure, the connection re-establishment process, synchronization (timing adjustment) for uplink data transmission, and requests for PUSCH (UL-SCH) resources. The random access preamble can be used to notify the base station device 3 of the index (random access preamble index) provided by the upper layer of terminal device 1.

[0072] A random access preamble can be derived by cyclically shifting the Zadoff-Chu sequence corresponding to the physical root sequence index u. The Zadoff-Chu sequence can be generated based on the physical root sequence index u. Multiple random access preambles can be defined in a serving cell. A random access preamble can be determined at least based on its index. Different random access preambles corresponding to different indices can correspond to different combinations of the physical root sequence index u and the cyclic shift. The physical root sequence index u and the cyclic shift can be derived at least based on information included in the system information. The physical root sequence index u can be an index that identifies the sequence included in the random access preamble. The random access preamble can also be determined at least based on the physical root sequence index u.

[0073] exist Figure 1 In uplink wireless communication, the following uplink physical signals are used. These uplink physical signals may not be used to transmit information output from the upper layer, but are used by the physical layer.

[0074] • UL DMRS (Uplink Demodulation Reference Signal)

[0075] • SRS (Sounding Reference Signal)

[0076] • UL PTRS (Uplink Phase Tracking Reference Signal)

[0077] UL DMRS is associated with the transmission of PUSCH and / or PUCCH. UL DMRS is multiplexed with PUSCH or PUCCH. Base station device 3 can use UL DMRS for transmission path correction of PUSCH or PUCCH. Hereinafter, the UL DMRS associated with the PUSCH will be referred to only as the PUSCH transmission. Hereinafter, the UL DMRS associated with the PUCCH will be referred to only as the PUCCH transmission. The UL DMRS associated with the PUSCH is also referred to as the PUSCH UL DMRS. The UL DMRS associated with the PUCCH is also referred to as the PUCCH UL DMRS.

[0078] SRS transmission may be independent of PUSCH or PUCCH transmission. Base station device 3 can use SRS for channel state measurement. SRS can be transmitted in the last or a specified number of OFDM symbols of a subframe in an uplink time slot.

[0079] A UL PTRS can be a reference signal used at least for phase tracking. A UL PTRS can be associated with a UL DMRS group that includes at least one antenna port for one or more UL DMRSs. The association of a UL PTRS with a UL DMRS group can be that one or all of the antenna ports of the UL PTRS and the antenna ports included in the UL DMRS group are at least QCLs. A UL DMRS group can be identified at least based on the antenna port with the smallest index among the UL DMRSs included in the UL DMRS group.

[0080] exist Figure 1 In the downlink wireless communication from base station device 3 to terminal device 1, the following downlink physical channel is used. The downlink physical channel is used by the physical layer to transmit information output from the upper layer.

[0081] ·PBCH (Physical Broadcast Channel)

[0082] • PDCCH (Physical Downlink Control Channel)

[0083] • PDSCH (Physical Downlink Shared Channel)

[0084] The PBCH is used to transmit the Master Information Block (MIB, BCH, Broadcast Channel). The PBCH can be transmitted based on a specified transmission interval. For example, the PBCH can be transmitted at 80ms intervals. The content of the information included in the PBCH can be updated every 80ms. The PBCH can consist of 288 subcarriers. The PBCH can also be configured to include 2, 3, or 4 OFDM symbols. The MIB may include information associated with an identifier (index) of the synchronization signal. The MIB may also include information indicating at least a portion of the time slot number, subframe number, and radio frame number from which the PBCH is transmitted.

[0085] The PDCCH is used to transmit downlink control information (DCI). Downlink control information is also called the DCI format. Downlink control information can include at least one of two grants: downlink grant or uplink grant. The DCI format used for PDSCH scheduling can also be called downlink grant. The DCI format used for PUSCH scheduling can also be called uplink grant. Downlink grant is also called downlink assignment or downlink allocation.

[0086] The DCI format may include at least some or all of the following: a TBS information field mapped to at least the information bits indicating the Transport Block Size (TBS) transmitted via the PDSCH; a resource allocation field mapped to at least the information bits indicating the set of resource blocks that map the PDSCH in the frequency domain; an MCS information field mapped to at least the information bits indicating the modulation scheme used for the PDSCH; a HARQ process number information field mapped to at least the information bits indicating the HARQ process number corresponding to the transport block; an NDI indication information field mapped to at least the information bits indicating the NDI (New Data Indicator) corresponding to the transport block; and an RV information field mapped to at least the information bits indicating the RV (Redundancy Version) used for the transport block.

[0087] One or more information fields included in a DCI format can be mapped to information bits given by joint encoding of multiple indication information. For example, a DCI format may include an MCS information field that is mapped to information bits given by joint encoding based at least on information associated with the TBS and information indicating the modulation scheme of the PDSCH.

[0088] The DCI format can be either a first DCI format or a second DCI format. Some or all of the fields included in the first DCI format may be given based at least on dedicated RRC signaling. The set of information fields included in the second DCI format may be given independently of dedicated RRC signaling. The set of information fields included in the second DCI format may be given based at least on common RRC signaling.

[0089] The size of the resource allocation information field included in the first DCI format can be given at least based on dedicated RRC signaling. The size of the resource allocation information field included in the second DCI format can be given independently of dedicated RRC signaling. The size of the resource allocation information field included in the second DCI format can be given based on common RRC signaling.

[0090] The size of the resource allocation information field can be given at least based on the number of resource blocks included in the carrier portion bandwidth in the frequency domain.

[0091] Figure 4 This is a diagram illustrating an example of a method for determining the size of a resource allocation information field in one embodiment of this invention. Figure 4 In the frequency domain, N is the number of resource blocks included in the carrier portion bandwidth. RB_CBP Set to 27. Figure 4 In pattern A, the size N of RBG is... RBG Set to 4, in Figure 4 In pattern B, the size N of RBG is... RBG Set to 2. Figure 4 In pattern A, the number N of RBGs (Resource Block Groups) in the bandwidth of this carrier portion is... RBC_CBP There are 7. Figure 4 In pattern B, the number N of RBGs in the carrier bandwidth is... RBG_CBP There are 14. The number N of the RBGs in the carrier portion bandwidth. RB0_CBP At least based on the number N of resource blocks included in the carrier portion bandwidth in the frequency domain. RB_CBP And the size N of RBG RBG The number N of the RBGs in the carrier bandwidth is given. RBG_CBP It can be made by N RBG_CBP =ceil(N RB_CBp / N RBG ) is given here. ceil(X) value ) can be for X value The floor function for rounding up. ceil(X) value It can be no less than X value The smallest integer within the range. The number N of RBGs in the carrier portion bandwidth. RBG_CBP It can also be N RBG_CBP =floor(N) RB_CBP / N RBG The floor(X) is given here. value ) can be for X value The floor function. value It can be no greater than Xvalue The largest integer within the range.

[0092] In various embodiments of this implementation, unless otherwise stated, the number of resource blocks refers to the number of resource blocks in the frequency domain.

[0093] In the first resource allocation method, the size of the resource allocation information field can be the same as the number of RBGs (Resource Block Groups). The first resource allocation method is a method of representing a set of resource blocks mapped to a PDSCH using a bitmap of RBGs.

[0094] In the second resource allocation method, the size of the resource allocation information field can be determined by ceil(log2(N)). RB_CBP ×(N RB_CBP -1) / 2)) is given. In the second resource allocation method, the size of the resource allocation information field can also be given by ceil(log2(N RBG_CBP ×(N RBG_CBP -1) / 2)) is given. The second resource allocation method can be a method that represents consecutive resource block indices as a set of resource blocks mapped to the PDSCH. The second resource allocation method can also be a method that represents the resource blocks corresponding to the resource block indices between two resource block indices selected from the resource blocks included in the carrier portion bandwidth as a set of resource blocks mapped to the PDSCH. The second resource allocation method can also be a method that represents consecutive RBG indices as a set of resource blocks mapped to the PDSCH. The second resource allocation method can also be a method that represents the RBG corresponding to the RBG indices between two RBG indices selected from the RBGs included in the carrier portion bandwidth as a set of resource blocks mapped to the PDSCH.

[0095] A downlink grant is used to schedule at least one PDSCH within a serving cell. The downlink grant is also used to schedule at least one PDSCH within the same time slot as the slot in which the downlink grant was sent.

[0096] An uplink grant is used to schedule at least one PUSCH within a serving cell.

[0097] A physical channel can be mapped to one serving cell. A physical channel may also not be mapped to multiple serving cells.

[0098] The first DCI format may include a CBP indication information field. The CBP indication information field may at least indicate the carrier portion bandwidth set as the active carrier bandwidth part. The active carrier portion bandwidth for a downlink carrier is also called the downlink active carrier bandwidth part. The active carrier portion bandwidth for an uplink carrier is also called the uplink active carrier bandwidth part. Terminal device 1 can receive at least PDCCH and PDSCH within the downlink active carrier bandwidth part. Furthermore, terminal device 1 can receive at least PUCCH and PUDSCH within the uplink active carrier bandwidth part. Alternatively, it may receive PDCCH and PDSCH outside the carrier portion bandwidth outside the downlink active carrier bandwidth part. Furthermore, it may transmit PUCCH and PUSCH outside the carrier portion bandwidth outside the uplink active carrier bandwidth part.

[0099] The first DCI format used for PDSCH scheduling is also called the first downlink DCI format. The first DCI format used for PUSCH scheduling is also called the first uplink DCI format. The first downlink DCI format and the first uplink DCI format are also referred to as the first DCI format.

[0100] Figure 5 This is a diagram illustrating an example of a CBP indication information field in one embodiment of this work. Figure 5 In this context, the CBP indicator information field is 2 bits in size. For example... Figure 5 As shown, the carrier bandwidth can correspond to the code points of the information bits in the CBP indicator information field. The size of the CBG indicator information field can be 1 bit, 3 bits, or other bit numbers.

[0101] The downlink active carrier portion bandwidth for a given downlink carrier can be 1. The uplink active carrier portion bandwidth for a given uplink carrier can also be 1.

[0102] The downlink active carrier bandwidth for a given downlink carrier can also be multiple. Similarly, the uplink active carrier bandwidth for a given uplink carrier can also be multiple.

[0103] In FDD (Frequency Division Duplex) mode, the downlink active carrier bandwidth may not correspond to the uplink active carrier bandwidth. In TDD (Time Division Duplex) mode, the downlink active carrier bandwidth can correspond to the uplink active carrier bandwidth. This correspondence can occur if the center frequency of the downlink active carrier bandwidth is the same as the center frequency of the uplink active carrier bandwidth. Alternatively, it can occur if the carrier frequencies (e.g., minimum and maximum carrier frequencies) that can be set for the downlink active carrier bandwidth are the same as the carrier frequencies (e.g., minimum and maximum carrier frequencies) that can be set for the uplink active carrier bandwidth. Finally, it can occur if the resource offset value N associated with the downlink active carrier bandwidth... offset_CBP The resource offset N associated with the uplink active carrier portion of the bandwidth. offset_CBP Consistent. The correspondence between the downlink active carrier bandwidth and the uplink active carrier bandwidth can also mean that the range of resource block indices that can utilize the downlink active carrier bandwidth is consistent with the range of resource block indices that can utilize the uplink active carrier bandwidth. When the downlink active carrier bandwidth and the uplink active carrier bandwidth correspond, the CBP indication information field can represent both the setting of the downlink active carrier bandwidth and the setting of the uplink active carrier bandwidth.

[0104] The CBP indication information field may at least indicate the downlink carrier portion bandwidth set as the downlink active carrier portion bandwidth. A PDSCH scheduled via a DCI format including this CBP indication information field can be received within this downlink carrier portion bandwidth. The CBP indication information field may at least indicate the downlink carrier portion bandwidth for receiving a PDSCH scheduled via a DCI format including this CBP indication information field. The CBP indication information field may at least include information indicating the uplink carrier portion bandwidth for transmitting a PUSCH scheduled via a DCI format including this CBP indication information field.

[0105] The second DCI format may also exclude the CBP indication information field.

[0106] The second DCI format used for PDSCH scheduling is also called the second downlink DCI format. The second DCI format used for PUSCH scheduling is also called the second uplink DCI format. The second downlink DCI format and the second uplink DCI format are also referred to as the second DCI format.

[0107] Terminal device 1 sets one or more control resource sets (CORESET) for PDCCH searching. Terminal device 1 attempts to receive PDCCH within one or more control resource sets.

[0108] A control resource set can represent a time-domain / frequency-domain area that can map one or more PDCCHs. The control resource set can be the area where terminal device 1 attempts to receive PDCCHs. The control resource set can consist of contiguous resources (localized resources) or discontinuous resources (distributed resources).

[0109] In the frequency domain, the mapping unit of a control resource set can be a resource block. For example, in the frequency domain, the mapping unit of a control resource set can be 6 resource blocks. In the time domain, the mapping unit of a control resource set can be an OFDM symbol. For example, in the time domain, the mapping unit of a control resource set can be 1 OFDM symbol.

[0110] The frequency domain of the control resource set can be the same as the system bandwidth of the serving cell. Furthermore, the frequency domain of the control resource set can be given at least based on the system bandwidth of the serving cell. The frequency domain of the control resource set can also be given at least based on upper-layer signaling and / or downlink control information.

[0111] The time domain of the control resource set can be given at least based on upper-layer signaling and / or downlink control information.

[0112] A control resource set can be a common control resource set. The common control resource set can be a control resource set jointly configured for multiple terminal devices 1. The common control resource set can be given based at least on some or all of the MIB, first system information, second system information, common RRC signaling, and cell ID. For example, the time and / or frequency resources of the control resource set configuring the PDCCH used for monitoring scheduling of the first system information can be given at least based on the MIB.

[0113] A control resource set can also be a dedicated control resource set. A dedicated control resource set can be a control resource set configured to be used exclusively by terminal device 1. A dedicated control resource set can be given based on at least some or all of the values ​​of dedicated RRC signaling and C-RNTI.

[0114] The control resource set may include a set of PDCCHs (or PDCCH candidates) monitored by terminal device 1. The control resource set may be configured to include one or more search regions (search space, SS).

[0115] A search region is configured to include one or more PDCCH candidates at a certain aggregation level. Terminal device 1 receives the PDCCH candidates included in the search region and attempts to receive the PDCCH. Here, the PDCCH candidates are also referred to as blind detection candidates.

[0116] A set of search areas consists of one or more search areas. A set of search areas can be a CSS (Common Search Space). A CSS can be provided based on at least part or all of the MIB, first system information, second system information, common RRC signaling, and cell ID. A CSS can be configured for monitoring in the second DCI format. Alternatively, monitoring in the first DCI format may not be configured in the CSS. A CSS can correspond to the second DCI format.

[0117] A set of search regions can also be a USS (UE-specific Search Space). The USS can be given based on at least some or all of the values ​​of dedicated RRC signaling and C-RNTI. The USS can be configured for monitoring a first DCI format and / or a second DCI format. The USS can correspond to the first DCI format and / or the second DCI format.

[0118] A shared control resource set may include at least one or both of CSS and USS. A dedicated control resource set may include at least one or both of CSS and USS.

[0119] The physical resources of the search area are composed of control channel elements (CCEs). Each CCE consists of a specified number of resource element groups (REGs). For example, a CCE can consist of 6 REGs. Each REG can consist of one OFDM symbol of a physical resource block (PRB). That is, a REG can be configured to include 12 resource elements (REs). A PRB is also simply referred to as a resource block (RB).

[0120] PDSCH is used to send downlink data (DL-SCH, PDSCH). PDSCH is used at least to send Random Access Message 2 (Random Access Response). PDSCH is used at least to send system information including parameters used for initial access.

[0121] The PDSCH is given based on at least some or all of scrambling, modulation, layer mapping, precoding, and mapping to physical resource. It may also be assumed that the terminal device 1 gives the PDSCH based on at least some or all of scrambling, modulation, layer mapping, precoding, and mapping to physical resource.

[0122] Alternatively, in the scrambling, for the codeword q, at least based on the scrambling sequence c... (q) (i) Scrambled bit block b (q) (i), generate b (q) sc (i). In block b of bits (q) In (i), i represents 0 to M. (q) bit Values ​​within the range of -1. M (q) bit This can be the number of bits in the codeword q transmitted via PDSCH. The scrambling sequence c. (q) (i) It can be a sequence based at least on a pseudo-random function (e.g., an M-sequence, a Gold sequence, etc.). Alternatively, in scrambling, for the codeword q, it can be based at least on the scrambling sequence c. (q) (i) and the scrambled bit block b of the following formula (1) (q) (i) Generate block b with scrambled bits. (q) sc (i).

[0123] [Formula 1]

[0124]

[0125] mod(A, B) can be a function that outputs the remainder when A is divided by B. Alternatively, mod(A, B) can be a function that outputs the value corresponding to the remainder when A is divided by B.

[0126] Alternatively, in modulation, for a codeword, based on a specified modulation scheme, the scrambling bit block b is... (q) sc (i) Modulate to generate block d of complex-valued modulation symbols. (q)(i) The specified modulation scheme may include at least some or all of QPSK (Quadrature Phase Shift Keying), 16QAM (Quadrature Amplitude Modulation), 64QAM, and 256QAM. It should be noted that the specified modulation scheme may be given at least based on the DCI of the PDSCH scheduling.

[0127] Alternatively, in the layer mapping, the block d used for the complex-valued modulation symbols of each codeword. (q) (i) Based on the prescribed mapping process, map to one or more layers to generate a block x(i) of complex-valued modulation symbols. The block x(i) of complex-valued modulation symbols can be x(i) = [x...] (0) (i)......x (v-1) (i)]. Here, v is the number of layers used for PDSCH.

[0128] Predefined precoding can also be applied to blocks x(i) of complex-valued modulation symbols during precoding. Alternatively, blocks x(i) of complex-valued modulation symbols can be transformed into blocks x(i) of complex-valued modulation symbols for v antenna ports during precoding. The number of antenna ports used for PDSCH and the number of layers used for PDSCH can be the same.

[0129] In the mapping to physical resources (physical resource mapping), the block x for the complex-valued modulation symbols of antenna port p (p) (i) Except for resource elements that satisfy at least some or all of elements A to E below, priority frequencies can be mapped from resource elements (k, 1) of the resource blocks allocated to the PDSCH. Here, priority frequency mapping can mean mapping from k to k+M (M is a specified value) of symbol l of resource element (k, l), from k to k+M of symbol l+1, ... from k to k+M of symbol 1+N (N is a specified value). In physical resource mapping, the block x of complex-valued modulation symbols used for antenna port p (p)(i) Except for some or all of the resource elements that at least satisfy elements A to E below, priority mapping can be performed starting from resource element (k, l). Here, priority mapping can mean mapping from symbol l to l+N (N is a specified value) of subcarrier index (resource element index) k of resource element (k, l), from symbol l to 1+N of subcarrier index k+1, ... from symbol 1 to 1+N of subcarrier index k+M (M is a specified value). Element A) Resource element element mapping DL DMRS associated with PDSCH B) Resource element element mapping DL PTRS associated with DL DMRS C) Resource element element setting CSI-RS and / or transmitting CSI-RS D) Resource element element setting SS block and / or transmitting SS block E) Resource reservation

[0130] The resource blocks allocated to the PDSCH (resource blocks mapped to the PDSCH) are given at least based on the resource allocation information field included in the DCI format. The resource blocks shown in the resource allocation information field are described in detail later.

[0131] exist Figure 1 In downlink wireless communication, the following downlink physical signals are used. These downlink physical signals may not be used to transmit information output from the upper layer, but are used by the physical layer.

[0132] • Synchronization signal (SS)

[0133] • DL DMRS (Downlink Demodulation Reference Signal)

[0134] • Shared RS (Shared Reference Signal)

[0135] • CSI-RS (Channel State Information Reference Signal)

[0136] • DL PTRS (Downlink Phase Tracking Reference Signal)

[0137] • TRS (Tracking Reference Signal)

[0138] Synchronization signals are used to enable terminal device 1 to obtain downlink frequency and / or time domain synchronization. Synchronization signals include PSS (Primary Synchronization Signal) and SSS (Secondary Synchronization Signal).

[0139] An SS block (SS / PBCH block) is configured to include at least a portion or all of the PSS, SSS, and PBCH. The antenna ports of the PSS, SSS, and PBCH included in the SS block may be identical. The PSS, SSS, and PBCH included in the SS block may be mapped to consecutive OFDM symbols. The CP settings of the PSS, SSS, and PBCH included in the SS block may be identical. The subcarrier spacing μ of the PSS, SSS, and PBCH included in the SS block may be identical.

[0140] The DL DMRS is associated with the transmission of PBCH, PDCCH, and / or PDSCH. The DL DMRS is multiplexed with PBCH, PDCCH, or PDSCH. Terminal device 1 can use the DL DMRS corresponding to PBCH, PDCCH, or PDSCH for transmission path correction of that PBCH, PDCCH, or PDSCH. Hereinafter, the DL DMRS associated with and co-transmitting PBCH is simply referred to as PBCH transmission. Hereinafter, the DL DMRS associated with and co-transmitting PDCCH is simply referred to as PDCCH transmission. Hereinafter, the DL DMRS associated with and co-transmitting PDSCH is simply referred to as PDSCH transmission. The DL DMRS associated with PBCH is also called PBCH-based DL DMRS. The DL DMRS associated with PDSCH is also called PDSCH-based DL DMRS. The DL DMRS associated with PDCCH is also called PDCCH-based DL DMRS.

[0141] A shared RS can be associated with at least the transmission of a PDCCH. A shared RS can be multiplexed with a PDCCH. Terminal device 1 can use a shared RS for PDCCH transmission path correction. Hereinafter, the shared RS associated with and used to transmit the PDCCH will also be referred to simply as the transmitting PDCCH.

[0142] DL DMRS can be a reference signal individually set for terminal device 1. The sequence of DL DMRS can be given at least based on parameters individually set for terminal device 1. The sequence of DL DMRS can also be given at least based on UE-specific values ​​(e.g., C-RNTI). DL DMRS can be transmitted individually for PDCCH and / or PDSCH. On the other hand, shared RS can be a reference signal commonly set for multiple terminal devices 1. The sequence of shared RS can also be given independently of parameters individually set for terminal device 1. For example, the sequence of shared RS can be given based on at least a portion of the slot number, mini-slot number, and cell ID (identity). Shared RS can also be a reference signal transmitted independently of whether PDCCH and / or PDSCH are transmitted.

[0143] CSI-RS can be a signal used at least for calculating channel state information. The CSI-RS mode assumed by the terminal device can be given at least by parameters from the upper layer.

[0144] PTRS can be a signal used at least for phase noise compensation. The mode of PTRS assumed by the terminal device can be given at least based on the parameters of the upper layer and / or DCI.

[0145] A DL PTRS can be associated with a DL DMRS group that includes at least one antenna port for one or more DL DMRSs. The association of a DL PTRS with a DL DMRS group can be that at least some or all of the antenna ports of the DL PTRS and the antenna ports included in the DL DMRS group are QCLs. A DL DMRS group can be identified at least based on the antenna port with the smallest index among the DL DMRSs included in the DL DMRS group.

[0146] The TRS can be a signal used for synchronization at least in time and / or frequency. The pattern of the TRS assumed by the terminal device can be given at least based on the parameters and / or DCI of the upper layer.

[0147] Downlink physical channels and downlink physical signals are also called downlink signals. Uplink physical channels and uplink physical signals are also called uplink signals. Downlink signals and uplink signals are collectively referred to as physical signals. Downlink signals and uplink signals are collectively referred to as signals. Downlink physical channels and uplink physical channels are collectively referred to as physical channels. Downlink physical signals and uplink physical signals are collectively referred to as physical signals.

[0148] BCH, UL-SCH, and DL-SCH are transport channels. The channels used in the Medium Access Control (MAC) layer are called transport channels. The unit of a transport channel used in the MAC layer is also called a transport block (TB) or MAC PDU. The MAC layer performs HARQ (Hybrid Automatic Repeat reQuest) control on a per-TB basis. A transport block is the unit of data forwarded (delivered) from the MAC layer to the physical layer. In the physical layer, transport blocks are mapped to codewords, and modulation is performed on each codeword.

[0149] Base station device 3 and terminal device 1 exchange (transmit and receive) signals at the higher layer. For example, base station device 3 and terminal device 1 can transmit and receive RRC signaling (also known as RRC message or RRC information) at the Radio Resource Control (RRC) layer. Furthermore, base station device 3 and terminal device 1 can also transmit and receive MAC CE (Control Element) at the MAC layer. Here, RRC signaling and / or MAC CE are also referred to as higher layer signaling.

[0150] PUSCH and PDSCH can be used to transmit at least RRC signaling and / or MAC CE. Here, the RRC signaling transmitted by base station device 3 via PDSCH can be signaling common to multiple terminal devices 1 within the serving cell. Signaling common to multiple terminal devices 1 within the serving cell is also called common RRC signaling. RRC signaling transmitted from base station device 3 via PDSCH can also be signaling specific to a particular terminal device 1 (also called dedicated signaling or UE-specific signaling). Signaling specific to terminal device 1 is also called dedicated RRC signaling. Upper-layer parameters specific to the serving cell can be transmitted to multiple terminal devices 1 within the serving cell using common signaling or to a particular terminal device 1 using dedicated signaling. UE-specific upper-layer parameters can also be transmitted to a particular terminal device 1 using dedicated signaling. PDSCH including dedicated RRC signaling can be scheduled via PDSCH within the first control resource set.

[0151] BCCH (Broadcast Control Channel), CCCH (Common Control Channel), and DCCH (Dedicated Control Channel) are logical channels. For example, BCCH is an upper-layer channel used for transmitting MIBs. Furthermore, CCCH (Common Control Channel) is an upper-layer channel used for transmitting common information among multiple terminal devices 1. Here, CCCH can be used, for example, for terminal devices 1 that are not connected via RRC. Furthermore, DCCH (Dedicated Control Channel) is an upper-layer channel used at least to transmit dedicated control information to terminal devices 1. Here, DCCH can be used, for example, for terminal devices 1 that are connected via RRC.

[0152] The BCCH in the logical channel can be mapped to BCH, DL-SCH, or UL-SCH in the transport channel. The CCCH in the logical channel can be mapped to DL-SCH or UL-SCH in the transport channel. The DCCH in the logical channel can be mapped to DL-SCH or UL-SCH in the transport channel.

[0153] The UL-SCH in the transport channel is mapped to the PUSCH in the physical channel. The DL-SCH in the transport channel is mapped to the PDSCH in the physical channel. The BCH in the transport channel is mapped to the PBCH in the physical channel.

[0154] The following describes an example of an initial connection method according to one embodiment of this invention.

[0155] Figure 6 This is a diagram illustrating an example of the mapping of SS blocks in one embodiment of this work. Figure 6 In the diagram, the horizontal axis represents the index of the resource block in the frequency domain. The index of the resource block in the frequency domain is also simply called the resource block index. For example... Figure 6 As shown, the SS block in the frequency domain is offset from the reference location of the resource block index (e.g., resource block #0) by N subcarriers. offset Mapping is performed on the ground. N offset It can be set to 0. N offset It can also be set to a value other than 0. N offset Also known as subcarrier offset. N offsetThis can be given at least based on the information field of the MIB included in the PBCH contained in the SS block. Alternatively, the range of resource blocks with a reference location constant from the resource block index can be set to the downlink initial active carrier bandwidth part in the frequency domain. Figure 6 In the frequency domain, the bandwidth of the initial active carrier portion of the downlink is set in resource blocks #0 to #26.

[0156] Subcarrier offset N offset It can be based at least on the resource grid offset N offset_RB_grid and / or resource block index offset N offset_RB_index And given. The resource grid offset N. offset_RB_grid This can represent the value of the subcarrier index of the starting point in a resource block that maps to the starting point of the SS block in the frequency domain. The resource grid offset N offset_RB_grid It can also represent the offset of a subcarrier unit between the SS block and the resource grid. The resource block index offset N offset_RB_index This can represent the offset from the reference location of the resource block index relative to the starting point of the SS block mapped in the frequency domain. The resource grid offset N offset_RB_grid It can also be given based on the information field of the MIB included in the PBCH contained in the SS block. The resource block index offset N offset_RB_index It can also be given based on the information field of the MIB included in the PBCH contained in the SS block.

[0157] The downlink initial active carrier portion bandwidth can be given at least based on the frequency band of the control resource set given at least based on the MIB. The frequency band of the downlink initial active carrier portion bandwidth can be the same as the frequency band of the control resource set given at least based on the MIB.

[0158] Terminal device 1 can at least base its subcarrier offset N on the subcarrier offset N of the PBCH included in the SS block. offset The downlink initial active carrier portion bandwidth is determined by the mapping of the SS block and / or the SS block. Terminal device 1 can set the downlink initial active carrier portion bandwidth to the downlink active carrier portion bandwidth and monitor the PDCCH within the downlink initial active carrier portion bandwidth. This PDCCH can be used at least for scheduling first system information. The CRC sequence appended to this PDCCH can be scrambled at least based on SI-RNTI (System Information-Radio Network Temporary Identifier).

[0159] Terminal device 1 transmits PRACH within the uplink active carrier bandwidth. The first system information may include information representing the physical resources used for transmitting PRACH in the uplink. Furthermore, the first system information may also include information representing the uplink initial active carrier bandwidth in the frequency domain. The downlink initial active carrier bandwidth and the uplink initial active carrier bandwidth are also referred to as the initial active carrier bandwidth. When transmitting PRACH, the uplink initial active carrier bandwidth can be set to the uplink active carrier bandwidth.

[0160] Terminal device 1 can set the first downlink carrier bandwidth part as the downlink active carrier bandwidth and monitor the PDCCH. This PDCCH can be the PDCCH for scheduling a random access response (Message 2 PDSCH). The CRC sequence appended to this PDCCH can be scrambled using RA-RNTI (Random Access-Radio Network Temporary Identifier). RA-RNTI can be given at least based on the time index of the SS block. The random access response includes the transmission of a random access response grant. The random access response grant includes the transmission of a random access response grant MAC CE. Message 2 PDSCH may include the random access response grant MAC CE.

[0161] The first downlink carrier portion bandwidth can be given at least based on the first system information. If the first system information does not include information associated with the first downlink carrier portion bandwidth, the first downlink carrier portion bandwidth can be the downlink initial activation carrier portion bandwidth. If the first system information does not include information associated with the first downlink carrier portion bandwidth, the terminal device 1 may also not change the setting of the downlink activation carrier portion bandwidth.

[0162] Terminal device 1 sends message 3PUSCH based at least on a random access response grant. Message 3PUSCH may include an RRC connection request.

[0163] Terminal device 1 can monitor the PDCCH within the first downlink carrier portion bandwidth. This PDCCH can be used for scheduling message 4PDSCH. Message 4PDSCH may include a conflict resolution MAC CE.

[0164] The carrier bandwidth partadaptation in terminal device 1 will be described below. Carrier bandwidth partadaptation includes changing the setting of the active carrier bandwidth. Carrier bandwidth partadaptation may include at least changing the setting of the RF unit 32 and / or changing the setting of the baseband unit 33.

[0165] Terminal device 1 can set a downlink default carrier bandwidth part based at least on dedicated RRC signaling. If dedicated RRC signaling indicating the downlink default carrier bandwidth part is not received, the downlink initial activation carrier bandwidth part can be set as the downlink default carrier bandwidth part. If dedicated RRC signaling including at least information indicating the downlink default carrier bandwidth part is not received, and the first system information does not include information indicating the first downlink carrier bandwidth part, the downlink initial activation carrier bandwidth part can be set as the downlink default carrier bandwidth part. If dedicated RRC signaling including at least information indicating the downlink default carrier bandwidth part is not received, and the first system information includes information indicating the first downlink carrier bandwidth part, the first downlink carrier bandwidth part can be set as the downlink default carrier bandwidth part.

[0166] Terminal device 1 can set one or more downlink default carrier portion bandwidths based at least on dedicated RRC signaling. Furthermore, terminal device 1 can also set one or more downlink default carrier portion bandwidths for a serving cell based at least on dedicated RRC signaling.

[0167] Figure 7 This diagram illustrates an embodiment of carrier portion bandwidth adaptation in this implementation. Figure 7 In one example shown, carrier portion bandwidths 511, 512, and 513 are configured in serving cell 500. Furthermore, carrier portion bandwidth 511 is given based on the frequency band between resource block index 501 and resource block index 502. Furthermore, carrier portion bandwidth 512 is given based on the frequency band between resource block index 503 and resource block index 504. Furthermore, carrier portion bandwidth 513 is given based on the frequency band between resource block index 505 and resource block index 506. Here, carrier portion bandwidth 511 is set as the downlink default carrier portion bandwidth.

[0168] exist Figure 7In this process, terminal device 1 receives PDCCH 521 in carrier portion bandwidth 511, which is set as downlink active carrier portion bandwidth. Next, terminal device 1 sets carrier portion bandwidth 512 as downlink active carrier portion bandwidth, based at least on the CBP indication information field of the DCI format included in PDCCH 521. Then, terminal device 1 receives PDSCH 522 in carrier portion bandwidth 512. Here, the DCI format included in PDCCH 521 can be a first DCI format.

[0169] Between receiving PDCCH521 and receiving PDSCH522, terminal device 1 changes the setting of the downlink active carrier bandwidth from carrier bandwidth 511 to carrier bandwidth 512.

[0170] When terminal device 1 sets the carrier portion bandwidth 512 to the downlink active carrier portion bandwidth, timer 531 is started. If timer 531 expires without receiving a PDCCH from the PDSCH in the scheduled carrier portion bandwidth 512, terminal device 1 can set the downlink default carrier portion bandwidth to the downlink active carrier portion bandwidth.

[0171] Next, terminal device 1 receives PDCCH 523 and PDSCH 524 in the carrier portion bandwidth 512. Upon receiving the PDSCH (PDSCH 524 in this case) of the downlink active carrier portion bandwidth, timer 531 can be restarted.

[0172] Next, terminal device 1 receives PDCCH 525 in carrier portion bandwidth 512, and changes the setting of the downlink active carrier portion bandwidth from carrier portion bandwidth 512 to carrier portion bandwidth 513, at least based on the CBP indication information field of the DCI format included in PDCCH 525. Then, terminal device 1 receives PDSCH 526 in carrier portion bandwidth 513. Here, the DCI format included in PDCCH 525 can be a first DCI format.

[0173] When terminal device 1 sets the carrier portion bandwidth 513 to the downlink active carrier portion bandwidth, timer 532 is started. If timer 532 expires without receiving a PDCCH from the PDSCH in the scheduled carrier portion bandwidth 513, terminal device 1 can change the downlink default carrier portion bandwidth to the downlink active carrier portion bandwidth.

[0174] When the timer 532 expires, terminal device 1 sets the downlink default carrier portion bandwidth to the downlink active carrier portion bandwidth. Then, terminal device 1 receives PDCCH 527 at the carrier portion bandwidth 511 set to the downlink default carrier portion bandwidth.

[0175] Timers 531 and 532 are timers used to determine whether terminal device 1 changes the setting of the downlink active carrier portion bandwidth to the downlink default carrier portion bandwidth. Hereinafter, timers 531 and 532 will also be referred to simply as timers. Whether to set the downlink default carrier portion bandwidth to the downlink active carrier portion bandwidth can be determined at least based on these timers.

[0176] Figure 8 This is a diagram illustrating an example of the operation of a timer in one embodiment of this invention. Figure 8 In this context, the downlink default carrier portion bandwidth can be carrier portion bandwidth 511, and the downlink carrier portion bandwidth other than the downlink default carrier portion bandwidth can be carrier portion bandwidth 512 or 513. First, in step 1, when the carrier portion bandwidth other than the downlink default carrier portion bandwidth is set as the downlink active carrier portion bandwidth, a timer for that carrier portion bandwidth other than the downlink default carrier portion bandwidth is started (step 2). Here, starting the timer can be done by setting the timer value to an initial value. This initial value can be set for each carrier portion bandwidth. That is, the timer can be initialized with the initial value of the timer corresponding to the carrier portion bandwidth set as the downlink active carrier portion bandwidth. Starting the timer can also be done by starting a timer for the carrier portion bandwidth and discarding the timer used for the carrier portion bandwidth before the setting of the downlink active carrier portion bandwidth was changed to that carrier portion bandwidth.

[0177] If a PDCCH for scheduling PDSCH is received before the timer expires in step 3, proceed to step 4. If no PDCCH for scheduling PDSCH is received before the timer expires in step 3, proceed to step 5.

[0178] In step 4, if the PDSCH scheduled by the received PDCCH is a downlink active carrier portion bandwidth PDSCH, the timer is restarted, and the process proceeds to step 3. Restarting the timer can also involve setting the value of the timer used to start the downlink active carrier portion bandwidth to its initial value.

[0179] In step 4, if the PDSCH scheduled by the received PDCCH is a PDSCH with a carrier portion bandwidth other than the downlink active carrier portion bandwidth, proceed to step 2. In step 4, the carrier portion bandwidth other than the downlink default carrier portion bandwidth set as the downlink active carrier portion bandwidth can be indicated, at least based on the CBP indication information field in the DCI format included in the PDCCH.

[0180] In step 5, the downlink default carrier portion bandwidth is set to the downlink active carrier portion bandwidth, and the process returns to step 1.

[0181] The downlink default carrier bandwidth can be the carrier bandwidth that is set as the downlink active carrier bandwidth upon timer expiration. When the downlink default carrier bandwidth is set as the downlink active carrier bandwidth, the timer may not be started. A timer and its initial value can also be set for the downlink default carrier bandwidth. Alternatively, timers and / or their initial values ​​can be set separately for carrier bandwidths that are not the downlink default carrier bandwidth but are set by dedicated RRC signaling (or they can be associated). The carrier bandwidth that is not the downlink default carrier bandwidth but is set by dedicated RRC signaling is also referred to as the second downlink carrier bandwidth. In other words, the second downlink carrier bandwidth is the sum of the downlink initial active carrier bandwidth, the first carrier bandwidth, and the carrier bandwidth other than the downlink default carrier bandwidth.

[0182] The second downlink carrier portion bandwidth includes at least the carrier portion bandwidth 512 and the carrier portion bandwidth 513 in the serving cell 500.

[0183] If a first downlink DCI format for serving cell 500 is detected in the control resource set of the downlink default carrier portion bandwidth in serving cell 500, the carrier portion bandwidth 512 in serving cell 500 can be set as the downlink active carrier portion bandwidth based at least on the CBP indication information field included in the first downlink DCI format. The carrier portion bandwidth 512 can also be the carrier portion bandwidth indicated by the CBP indication information field. The resource allocation information field included in the first downlink DCI format can indicate which set of resource blocks in the carrier portion bandwidth 512 is mapped to in the frequency domain by the PDSCH. The size of the resource allocation information field included in the first downlink DCI format can be given at least based on the number of resource blocks included in the carrier portion bandwidth 512 in the frequency domain. The size of the resource allocation information field can be set to the maximum value of the calculated values ​​of the resource allocation information fields for one or more downlink carrier portion bandwidths in serving cell 500. The size of the resource allocation information field can also be set based on the maximum number of RBGs included in one or more downlink carrier portion bandwidths in the serving cell in the frequency domain. That is, N is used to calculate the size of this resource allocation information field. RBG_CBP The size of this resource allocation information field can be the maximum number of RBGs included in one or more downlink carrier portion bandwidths of the serving cell 500 in the frequency domain. The size of this resource allocation information field can also be set based on the maximum number of resource blocks included in one or more downlink carrier portion bandwidths of the serving cell 500 in the frequency domain. That is, N used to calculate the size of this resource allocation information field... RBG_CBP It can be the maximum number of resource blocks included in one or more downlink carrier portion bandwidths of the serving cell 500 in the frequency domain. The RBG size N can be set separately for one or more downlink carrier portion bandwidths. RBG The size of the resource allocation information field included in the first downlink DCI format can be given at least based on dedicated RRC signaling.

[0184] The size of the resource allocation information field included in the first DCI format can be given for each serving cell.

[0185] In FDD mode, if the control resources for the downlink default carrier portion bandwidth in serving cell 500 detect the first uplink DCI format for serving cell 500, the downlink active carrier portion bandwidth can be left unchanged.

[0186] In TDD mode, if the control resources for the downlink default carrier portion bandwidth in serving cell 500 detect the first uplink DCI format for serving cell 500, the downlink active carrier portion bandwidth can be left unchanged.

[0187] If a second downlink DCI format for serving cell 500 is detected in the control resource set of the downlink default carrier portion bandwidth in serving cell 500, the resource allocation information included in the second downlink DCI format can indicate which set of resource blocks in the downlink default carrier portion bandwidth the PDSCH is mapped to in the frequency domain. The size of the resource allocation information field included in the second downlink DCI format can be given at least based on the number of resource blocks included in the downlink default carrier portion bandwidth.

[0188] In FDD mode, if the control resources for the downlink default carrier portion bandwidth in serving cell 500 detect the second uplink DCI format for serving cell 500, the downlink active carrier portion bandwidth can be left unchanged.

[0189] In TDD mode, if the control resources for the downlink default carrier portion bandwidth in serving cell 500 detect the second uplink DCI format for serving cell 500, the downlink active carrier portion bandwidth can be left unchanged.

[0190] When a first downlink DCI format for serving cell 500 is detected in the control resource set of the carrier portion bandwidth in serving cell 500, the carrier portion bandwidth 513 in serving cell 500 can be set as the downlink active carrier portion bandwidth based at least on the CBP indication information field included in the first downlink DCI format. The carrier portion bandwidth 513 can also be the carrier portion bandwidth indicated by the CBP indication information field. The resource allocation information field included in the first downlink DCI format can indicate which set of resource blocks in the carrier portion bandwidth 513 is mapped to in the frequency domain by the PDSCH. The size of the resource allocation information field included in the first downlink DCI format can be given at least based on the number of resource blocks included in the carrier portion bandwidth 513 in the frequency domain. The size of the resource allocation information field can be set to the maximum value of the calculated values ​​of the resource allocation information fields for one or more downlink carrier portion bandwidths in a serving cell. The size of the resource allocation information field can also be set based on the maximum number of RBGs included in one or more downlink carrier portion bandwidths in the serving cell in the frequency domain. That is, N is used to calculate the size of this resource allocation information field. RBG_CBPIt can be the maximum number of RBGs included in one or more downlink carrier portion bandwidths of a serving cell in the frequency domain. The size of this resource allocation information field can also be set based on the maximum number of resource blocks included in one or more downlink carrier portion bandwidths of the serving cell in the frequency domain. That is, N used to calculate the size of this resource allocation information field... RBG_CBP It can be the maximum number of resource blocks included in one or more downlink carrier portion bandwidths of a certain serving cell in the frequency domain. The RBG size N can be set separately for one or more downlink carrier portion bandwidths. RBG The size of the resource allocation information field included in the first downlink DCI format can be given at least based on dedicated RRC signaling.

[0191] In FDD mode, if the control resources of the carrier portion bandwidth 512 in the serving cell 500 detect the first uplink DCI format for the serving cell 500, the downlink active carrier portion bandwidth can be maintained without changing.

[0192] In TDD mode, if the control resources of the carrier portion bandwidth 512 in the serving cell 500 detect the first uplink DCI format for the serving cell 500, the downlink active carrier portion bandwidth can be maintained without changing.

[0193] If a second downlink DCI format for serving cell 500 is detected in the control resource set of the carrier portion bandwidth in serving cell 500, the downlink default carrier portion bandwidth can be set as the downlink active carrier portion bandwidth. The resource allocation information field included in the second downlink DCI format can indicate which set of resource blocks in the carrier portion bandwidth the PDSCH is mapped to. The size of the resource allocation information field included in the second downlink DCI format can be given at least based on the number of RBGs included in the downlink default carrier portion bandwidth.

[0194] In FDD mode, if the control resources of the carrier portion bandwidth 512 in the serving cell 500 detect the second uplink DCI format for the serving cell 500, the downlink active carrier portion bandwidth can be maintained without changing.

[0195] In TDD mode, if the control resources of the carrier portion bandwidth 512 in the serving cell 500 detect the second uplink DCI format for the serving cell 500, the downlink active carrier portion bandwidth can be maintained without changing.

[0196] The number of resource blocks included in the downlink default carrier portion bandwidth can be given at least based on the subcarrier spacing of the PDCCH and PDSCH of the downlink default carrier portion bandwidth and the bandwidth of the downlink default carrier portion bandwidth. The subcarrier spacing of the PDCCH and PDSCH of the downlink default carrier portion bandwidth can be given at least based on the setting μ for the subcarrier spacing of the downlink default carrier portion bandwidth. The bandwidth of the downlink default carrier portion bandwidth can be given at least based on the frequency / center frequency of the downlink default carrier portion bandwidth, the bandwidth to which the downlink default carrier portion bandwidth belongs, common RRC signaling, and a portion or all of dedicated RRC signaling.

[0197] The number of resource blocks included in the downlink default carrier portion bandwidth can be the same as the subcarrier spacing of the PDCCH and PDSCH in the downlink initial active carrier portion bandwidth, and the bandwidth of the downlink initial active carrier portion bandwidth. The subcarrier spacing of the PDCCH and PDSCH in the downlink default carrier portion bandwidth can be the same as the setting μ for the subcarrier spacing of the downlink initial active carrier portion bandwidth. The bandwidth of the downlink default carrier portion bandwidth can be given at least based on the frequency / center frequency of the downlink initial active carrier portion bandwidth, the bandwidth to which the downlink initial active carrier portion bandwidth belongs, common RRC signaling, and a part or all of the dedicated RRC signaling.

[0198] The resource allocation information field can be based at least on the resource offset value N associated with the carrier portion bandwidth. offset_CBP This determines the resource blocks included in the carrier portion bandwidth. The resource offset value N associated with the carrier portion bandwidth is... offset_CBP This indicates that the resource offset value N has been shifted from the reference location of the resource block index. offset_CBP The location is set as the reference location for the resource block index used for the bandwidth of this carrier portion.

[0199] The reference location of the resource block index can be equal to the reference location of the resource block index used for the downlink initial active carrier portion bandwidth. That is, the resource offset N associated with the downlink initial active carrier portion bandwidth... offset_CBP It can be 0. The resource offset N associated with the bandwidth of the first downlink carrier portion. offset_CBP This can be given at least based on the first system information. The resource offset value N associated with the downlink default carrier portion bandwidth. offset_CBPThis can be given at least based on dedicated RRC signaling. The resource offset value N associated with the bandwidth of the second downlink carrier portion. offset_CBP It can be given at least based on dedicated RRC signaling.

[0200] Figure 9 This diagram illustrates an example of a resource block allocation method according to one embodiment of this invention. Figure 9 In this context, it is assumed that the resource block mapping pattern of the mapped PDSCH, indicated by the resource allocation information field, is as follows: Figure 9 As shown in (a). Furthermore, it is assumed that the resource offset N associated with carrier portion bandwidth #0 (CBP#0) is... offset_CBP It is 0. Furthermore, assume the resource offset N associated with carrier portion bandwidth #1 (CBP#1) is 0. offset_CBP The value is 10. Furthermore, assume the resource offset N associated with carrier portion bandwidth #2 (CBP#2) is... offset_CBP The value is 5. Furthermore, the reference location for the resource block index is resource block #0.

[0201] exist Figure 9 In the diagram, the PDSCH is mapped to the resource blocks indicated by the diagonal lines. Furthermore, the resource blocks indicated by the grid lines are reference locations for resource block indices associated with each carrier portion bandwidth. The resource offset value N associated with carrier portion bandwidth #0 is... offset_CBP The value is 0, therefore it is mapped to PDSCH resource block indices #2, #3, #6, #7, #8, and #9. The resource offset value N associated with carrier portion bandwidth #1. offset_CBP The value is 10, therefore it maps to PDSCH resource block indices #12, #13, #16, #17, #18, and #19. The resource offset value N associated with carrier portion bandwidth #2. offset_CBP The value is 5, therefore it is mapped to PDSCH resource block indices #7, #8, #11, #12, #13, and #14.

[0202] In other words, the set of resource blocks mapped to the PDSCH, represented by the resource allocation information field, can be based at least on the value of the resource allocation information field and the resource offset value N associated with the carrier portion bandwidth. offset_CBP And given. Here, the carrier portion bandwidth can be the carrier portion bandwidth mapped to the PDSCH. The set of resource blocks of the mapped PDSCH indicated by the resource allocation information field can be based at least on the value of the resource allocation information field and the resource offset value N associated with the carrier portion bandwidth mapped to the PDSCH. offset_CBP And given.

[0203] The resource offset N associated with the downlink carrier portion bandwidth in the case of detecting the first DCI format for serving cell 500.offset_CBP_1 The resource offset value N associated with the downlink carrier portion bandwidth in the case of detecting a second DCI format for the serving cell 500 offset_CBP_2 They can be different. The resource offset value N offset_CBP_1 and the resource offset value N offet_CBP_2 It can be given at least based on each dedicated RRC signaling.

[0204] Hereinafter, an example of the configuration of a terminal device 1 according to one embodiment will be described.

[0205] Figure 10 This is a schematic block diagram illustrating the configuration of terminal device 1 according to one embodiment of this invention. Figure 10 As shown, the terminal device 1 is configured to include a wireless transceiver unit 10 and an upper-layer processing unit 14. The wireless transceiver unit 10 is configured to include at least one or all of an antenna unit 11, an RF (Radio Frequency) unit 12, and a baseband unit 13. The upper-layer processing unit 14 is configured to include at least one or all of a media access control layer processing unit 15 and a radio resource control layer processing unit 16. The wireless transceiver unit 10 is also referred to as a transmitting unit, a receiving unit, or a physical layer processing unit.

[0206] The upper-layer processing unit 14 outputs uplink data (transmission blocks) generated through user operations to the wireless transceiver unit 10. The upper-layer processing unit 14 performs processing at the MAC layer, Packet Data Convergence Protocol (PDCP) layer, Radio Link Control (RLC) layer, and RRC layer.

[0207] The media access control layer processing unit 15 of the upper layer processing unit 14 performs MAC layer processing.

[0208] The Radio Resource Control (RRC) layer processing unit 16, included in the upper-layer processing unit 14, performs RRC layer processing. The RRC layer processing unit 16 manages various setting information / parameters for the device itself. The RRC layer processing unit 16 sets various setting information / parameters based on upper-layer signals received from the base station device 3. That is, the RRC layer processing unit 16 sets various setting information / parameters based on information representing various setting information / parameters received from the base station device 3. These parameters can be upper-layer parameters.

[0209] 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 received physical signals, and outputs the decoded information to the upper-layer processing unit 14. The wireless transceiver unit 10 generates physical signals by modulating and encoding data, generating baseband signals (converting them to time-continuous signals), and then transmits them to the base station device 3.

[0210] The RF unit 12 converts the signal received by the antenna unit 11 into a baseband signal through quadrature demodulation (down-conversion), removing unwanted frequency components. The RF unit 12 then outputs the processed analog signal to the baseband unit.

[0211] The baseband unit 13 converts the analog signal input from the RF unit 12 into a digital signal. The baseband unit 13 removes the part equivalent to the CP (Cyclic Prefix) from the converted digital signal, performs a Fast Fourier Transform (FFT) on the signal after removing the CP, and extracts the signal in the frequency domain.

[0212] The baseband unit 13 performs an inverse fast fourier transform (IFFT) on the data to generate OFDM symbols, appends a CP to the generated OFDM symbols to generate a digital baseband signal, and converts the digital baseband signal into an analog signal. The baseband unit 13 outputs the converted analog signal to the RF unit 12.

[0213] The RF unit 12 uses a low-pass filter to remove unwanted 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. Furthermore, the RF unit 12 amplifies the power. Additionally, the RF unit 12 may also have the function of controlling the transmission power. Therefore, the RF unit 12 is also referred to as the transmission power control unit.

[0214] Hereinafter, an example of the configuration of a base station device 3 according to one embodiment will be described.

[0215] Figure 11 This is a schematic block diagram illustrating the configuration of a base station device 3 according to one embodiment of this invention. Figure 11 As shown, the base station device 3 is configured to include a wireless transceiver unit 30 and an upper-layer processing unit 34. The wireless transceiver unit 30 is configured to include an antenna unit 31, an RF unit 32, and a baseband unit 33. The upper-layer processing unit 34 is configured to include a media access control layer processing unit 35 and a radio resource control layer processing unit 36. The wireless transceiver unit 30 is also referred to as a transmitting unit, a receiving unit, or a physical layer processing unit.

[0216] The upper-layer processing unit 34 performs processing of the MAC layer, PDCP layer, RLC layer, and RRC layer.

[0217] The media access control layer processing unit 35 of the upper layer processing unit 34 performs MAC layer processing.

[0218] The Radio Resource Control (RRC) layer processing unit 36, included in the upper-layer processing unit 34, performs RRC layer processing. The RRC layer processing unit 36 ​​generates or obtains downlink data (transmission blocks), system information, RRC messages, MAC CE, etc., configured in the PDSCH from the upper-level node, and outputs them to the radio transceiver unit 30. Furthermore, the RRC layer processing unit 36 ​​manages various setting information / parameters for each terminal device 1. The RRC layer processing unit 36 ​​can set various setting information / parameters for each terminal device 1 via upper-layer signals. That is, the RRC layer processing unit 36 ​​transmits / broadcasts information representing various setting information / parameters.

[0219] Since the function of the wireless transceiver unit 30 is the same as that of the wireless transceiver unit 10, its description is omitted.

[0220] The components of terminal device 1 marked with reference numerals 10 to 16 can also be configured as circuits. The components of base station device 3 marked with reference numerals 30 to 36 can also be configured as circuits.

[0221] Hereinafter, various apparatus designs for one embodiment will be described.

[0222] (1) To achieve the above objective, the present invention adopts the following solution. That is, the first solution of the present invention is a terminal device, wherein a receiving unit is provided, which receives a DCI format including at least a resource allocation information field, and receives a PDSCH based on the resource allocation information field, wherein the resource allocation information field indicates which set of resource blocks in the carrier partial bandwidth to which the PDSCH is mapped in the frequency domain. In the case that the DCI format is a first DCI format including a CBP indication information field indicating the carrier partial bandwidth in which the PDSCH is scheduled in multiple carrier partial bandwidths, the resource allocation information field indicates the set of resource blocks to which the PDSCH is mapped in the carrier partial bandwidth indicated by the CBP indication information field in the frequency domain. In the case that the DCI format is a second DCI format not including the CBP indication information field, the resource allocation information field indicates the set of resource blocks to which the PDSCH is mapped in the default carrier partial bandwidth.

[0223] (2) Furthermore, in the first aspect of the present invention, at least a portion of the fields included in the first DCI format are set based on the first dedicated RRC signaling, and the fields included in the second DCI format are set independently of the first dedicated RRC signaling.

[0224] (3) Furthermore, in the first aspect of the present invention, when a second dedicated RRC signaling including information relating to the setting of the default carrier portion bandwidth is received, the default carrier portion bandwidth is given based on the second dedicated RRC signaling; when the second dedicated RRC signaling is not received, the initial active carrier portion bandwidth is set to the default carrier portion bandwidth, the initial active carrier portion bandwidth being used at least to monitor the PDCCH for scheduling the first system information.

[0225] (4) Furthermore, in the first embodiment of the present invention, when the DCI format is the first DCI format, the size of the resource allocation information field corresponds to the maximum number of RBGs set for the multiple carrier partial bandwidths respectively, and when the DCI format is the second DCI format, the size of the resource allocation information field corresponds to the number of RBGs set for the default carrier partial bandwidth.

[0226] (5) Furthermore, a second aspect of the present invention is a base station apparatus, wherein a transmitting unit is provided to transmit a DCI format including at least a resource allocation information field and a PDSCH corresponding to the DCI format. The resource allocation information field indicates which set of resource blocks in the carrier partial bandwidth to which the PDSCH is mapped in the frequency domain. In the case that the DCI format is a first DCI format including a CBP indication information field indicating the carrier partial bandwidth in which the PDSCH is scheduled in multiple carrier partial bandwidths, the resource allocation information field indicates the set of resource blocks in the carrier partial bandwidth indicated by the CBP indication information field that map the PDSCH. In the case that the DCI format is a second DCI format that does not include the CBP indication information field, the resource allocation information field indicates the set of resource blocks in the default carrier partial bandwidth that map the PDSCH.

[0227] (6) Furthermore, in the second aspect of the present invention, at least a portion of the fields included in the first DCI format are set based at least on the first dedicated RRC signaling, and the fields included in the second DCI format are set independently of the first dedicated RRC signaling.

[0228] (7) Furthermore, in the second aspect of the present invention, when the DCI format is the first DCI format, the size of the resource allocation information field corresponds to the maximum number of RBGs set for the multiple carrier partial bandwidths respectively, and when the DCI format is the second DCI format, the size of the resource allocation information field corresponds to the number of RBGs set for the default carrier partial bandwidth.

[0229] The programs operating in the base station device 3 and terminal device 1 according to one aspect of the present invention can be programs that control CPUs (Central Processing Units) and the like to achieve the functions of the above-described embodiments according to one aspect of the present invention (programs that enable the computer to function). Then, the information processed by these devices is temporarily stored in RAM (Random Access Memory) during processing, and subsequently stored in various ROMs such as Flash ROM (Read Only Memory) and HDDs (Hard Disk Drives), and read, modified / written by the CPU as needed.

[0230] It should be noted that a portion of the terminal device 1 and base station device 3 described above can also be implemented using a computer. In this case, it can be achieved by recording a program for implementing the control function on a computer-readable recording medium, reading the program recorded on the recording medium into a computer system, and executing it.

[0231] It should be noted that the "computer system" mentioned here refers to the computer system built into terminal device 1 or base station device 3, and employs hardware including an operating system and peripheral devices. Furthermore, "computer-readable recording media" refers to removable media such as floppy disks, magneto-optical disks, ROMs, and CD-ROMs, as well as storage devices such as hard drives built into the computer system.

[0232] Furthermore, "computer-readable recording medium" may also include: a recording medium that dynamically stores a program for a short period of time, such as a communication line in the case of transmitting a program via a network such as the Internet or a communication line such as a telephone line; and a recording medium that stores a program for a fixed period of time, such as volatile memory inside a computer system that serves as a server or client in such cases. In addition, the aforementioned program may be a program used to implement the above-mentioned functions, or it may be a program that can implement the above-mentioned functions by combining with a program already recorded in the computer system.

[0233] Furthermore, the base station device 3 in the above embodiments can also be implemented as an assembly (device group) composed of multiple devices. Each device constituting the device group can possess some or all of the functions or functional blocks of the base station device 3 in the above embodiments. As a device group, it is sufficient to have all the functions or functional blocks of the base station device 3. In addition, the terminal device 1 in the above embodiments can also communicate with the base station device, which is an assembly.

[0234] Furthermore, the base station device 3 in the above embodiments can be EUTRAN (Evolved Universal Terrestrial Radio Access Network) and / or NG-RAN (NextGenRAN, NR RAN). Additionally, the base station device 3 in the above embodiments may also have some or all of the functions of a host node for the eNodeB and / or gNB.

[0235] Furthermore, the terminal device 1 and base station device 3 described above can be implemented, either partially or entirely, as an LSI (Laser Sensor), typically an integrated circuit, or as a chipset. Each functional block of the terminal device 1 and base station device 3 can be implemented as a separate chip, or partially or entirely integrated into a single chip. Moreover, the method of integrated circuit implementation is not limited to LSI; it can also be implemented using dedicated circuits or general-purpose processors. Furthermore, if advancements in semiconductor technology lead to integrated circuit technologies that replace LSIs, integrated circuits based on such technologies can also be used.

[0236] Furthermore, while the above embodiments describe a terminal device as an example of a communication device, the invention of this application is not limited thereto and can be applied to fixed or non-movable electronic devices installed indoors or outdoors, such as AV equipment, kitchen equipment, cleaning / washing equipment, air conditioning equipment, office equipment, vending machines, and other household equipment, etc.

[0237] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the specific configuration is not limited to these embodiments, and design changes that do not depart from the spirit of the present invention are also included. Furthermore, various modifications can be made to one aspect of the present invention within the scope shown in the technical solution. Embodiments obtained by appropriately combining the technical solutions disclosed in different embodiments are also included within the technical scope of the present invention. In addition, configurations obtained by replacing elements that have the same effect as the elements described in the above embodiments are also included.

[0238] Industrial availability

[0239] One aspect of the present invention can be used, for example, in communication systems, communication devices (e.g., mobile phone devices, base station devices, wireless LAN devices, or sensor devices), integrated circuits (e.g., communication chips), or programs.

[0240] Symbol Explanation

[0241] 1 (1A, 1B, 1C) Terminal device

[0242] 3 base station devices

[0243] 10, 30 Wireless Transceiver Unit

[0244] 11, 31 antenna sections

[0245] 12, 32RF Unit

[0246] 13, 33 baseband section

[0247] 14, 34 Upper Processing Unit

[0248] 15, 35 Media Access Control Layer Processing Department

[0249] 16, 36 Wireless Resource Control Layer Processing Unit

[0250] 500 Service Community

[0251] 511, 512, and 513 carrier portion bandwidth

[0252] Resource block indexes 501, 502, 503, 504, 505, 506

[0253] 521, 523, 525, 527 PDCCH

[0254] 522, 524, 526PDSCH

[0255] Timers 531 and 532.

Claims

1. A terminal device configured to communicate with a base station device in a serving cell, the terminal device comprising: Radio Resource Control (RRC) layer processing unit and receiving unit, The RRC layer processing unit is configured to configure downlink DL portion bandwidth based on the first system information in the serving cell, wherein the DL portion bandwidth is the activated DL portion bandwidth; The RRC layer processing unit is configured to configure a control resource set based on the Master Information Block (MIB) in the serving cell, wherein the time and / or frequency resources of the control resource set are at least based on the MIB; and The receiving unit is configured to monitor a first physical downlink control channel (PDCCH) for transmitting first downlink control information (DCI) format in the active DL portion of the bandwidth, and is also configured to monitor a second PDCCH for transmitting a second DCI format in the active DL portion of the bandwidth. Wherein, the first number of bits in the first frequency resource allocation field for the first physical downlink shared channel (PDSCH) in the first DCI format is determined based on the number of resource blocks specifying the frequency bandwidth of the activated DL portion bandwidth, and Wherein, the number of the second bits in the second frequency resource allocation field for the second PDSCH in the second DCI format is determined based on the number of resource blocks that specify the frequency bandwidth of the control resource set; Among them, on the control resource set, the third PDCCH used for scheduling the first system information is monitored, and The decoding unit is configured to decode the first PDSCH in the active DL portion bandwidth based on the first DCI format included in the first PDCCH and to decode the second PDSCH in the active DL portion bandwidth based on the second DCI format included in the second PDCCH.

2. A communication method for a terminal device, the terminal device being configured to communicate with a base station device in a serving cell, the communication method comprising: Configure downlink DL portion bandwidth based on first system information in the serving cell, wherein the DL portion bandwidth is the activated DL portion bandwidth; In the serving cell, a control resource set based on the Master Information Block (MIB) is configured, wherein the time resources and / or frequency resources of the control resource set are given at least based on the MIB; Monitoring the first physical downlink control channel (PDCCH) for transmitting first downlink control information (DCI) in the activated DL portion bandwidth; and Monitoring the second PDCCH for transmitting the second DCI format within the active DL portion bandwidth, wherein, The first number of bits in the first frequency resource allocation field for the first physical downlink shared channel (PDSCH) in the first DCI format is determined based on the number of resource blocks that specify the frequency bandwidth of the activated DL portion bandwidth. The number of the second bits in the second frequency resource allocation field for the second PDSCH in the second DCI format is determined based on the number of resource blocks specifying the frequency bandwidth of the control resource set. Monitor the third PDCCH to be used for scheduling the first system information on the control resource set; and The first PDSCH is decoded in the active DL portion bandwidth based on the first DCI format included in the first PDCCH, and the second PDSCH is decoded in the active DL portion bandwidth based on the second DCI format included in the second PDCCH.

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