Terminal device and communication method

Abstract

It enables efficient on-demand transmission and reception of system information. [Solution] In a cell that supports on-demand transmission of system information, a wake-up signal is transmitted, a response to the wake-up signal is received, a Master Information Block (MIB) is obtained after receiving the response, information about the Physical Downlink Control Channel (PDCCH) is obtained from the MIB, a System Information Block 1 (SIB1) is obtained based on the information about the PDCCH, and a random number is generated based on the information contained in the SIB1. Perform the access procedure.

Description

[Technical Field]

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

[0002] Cellular mobile communication radio access methods and radio networks (hereinafter referred to as "Long Term Evolution (LTE)" or "EUTRA: Evolved Universal Terrestrial Radio Access") It is called ), and standardization is underway in the Third Generation Partnership Project (3GPP(registered trademark)). In LTE, base station equipment The base station is also called an eNodeB (evolved NodeB), and the terminal equipment is also called a UE (User Equipment). LTE is a cellular communication system in which multiple base station devices are arranged in a cell-like structure to cover the area they cover. A single base station device may manage multiple serving cells.

[0003] 3GPP is considering and standardizing the next-generation standard (NR: New Radio) as the communication method for 5G. NR is a single technology framework encompassing eMBB (enhanced Mobile Broadband), mMTC (massive Machine Type Communication), and URLLC (Ultra Reliable and Low Latency). The requirements must be met based on three scenarios (Communication).

[0004] 3GPP is exploring methods to reduce energy consumption in networks in order to minimize environmental impact and operational costs (Non-Patent Document 1). The majority of network energy consumption is in the wireless access network. Efforts are being made to reduce network energy consumption by shortening the time that base station equipment is transmitting or receiving signals and by increasing the time that base station equipment can be in a sleep state. [Prior art documents] [Non-patent literature]

[0005] [Non-Patent Document 1] "New WID: Enhancements of network energy savings for NR", RP-234065, Ericsson, 3GPP TSG RAN Meeting #102, Edinburgh, Scotland, December 11th-15th, 2023 [Overview of the project] [Problems that the invention aims to solve]

[0006] Support for on-demand transmission and reception of system information is being considered. Using a wake-up signal to trigger the transmission and reception of system information is being considered. Reducing the time it takes for base station equipment to transmit system information is being considered to reduce network energy consumption. In this context, one aspect of the present invention provides a terminal device capable of efficiently transmitting and receiving on-demand system information, and a communication method used in the terminal device. [Means for solving the problem]

[0007] (1) In order to achieve the above objective, one aspect of the present invention employs the following means. That is, a first aspect of the present invention is a terminal device comprising a processor and a memory for storing computer program code, wherein the device transmits a wake-up signal, receives a response to the wake-up signal, and acquires an MIB after receiving the response. , obtaining information about PDCCH from the MIB, and SIB1 based on the information about PDCCH The system retrieves the data and performs a random access procedure based on the information contained in the SIB1.

[0008] (2) Furthermore, the information relating to the PDCCH is at least the information relating to the control resource set. This includes information about the search area.

[0009] (3) Furthermore, after receiving the response, the information element pdcch-ConfigSIB1 contains information related to the PDCCH. This is interpreted as indicating a report.

[0010] (4) A second aspect of the present invention is a communication method used in a terminal device, comprising the steps of: transmitting a wake-up signal; receiving a response to the wake-up signal; and acquiring an MIB after receiving the response. The steps include obtaining information about PDCCH from the MIB and obtaining information about PDCCH The procedure includes the steps of obtaining an SIB1 based on the information contained in the SIB1 and performing a random access procedure based on the information contained in the SIB1.

[0011] (5) Furthermore, the information relating to the PDCCH is at least the information relating to the control resource set. This includes information about the search area.

[0012] (6) Furthermore, after receiving the response, the information element pdcch-ConfigSIB1 contains information related to the PDCCH. It is interpreted as showing a report.

Advantages of the Invention

[0013] According to this invention, on-demand system information can be efficiently transmitted and received between a terminal device and a base station device. As a result, the energy consumption of the network can be suppressed.

Brief Description of the Drawings

[0014] [Figure 1] It is a conceptual diagram of a wireless communication system according to one aspect of this embodiment. [Figure 2] It is a schematic diagram showing an example of a resource grid in a subframe according to one aspect of this embodiment. [Figure 3] It is a schematic block diagram showing the configuration of a terminal device 1 according to one aspect of this embodiment. [Figure 4] It is a schematic block diagram showing the configuration of a base station device 3 according to one aspect of this embodiment. [Figure 5] It is a diagram showing an example of an initial connection procedure according to one aspect of this embodiment. [Figure 6] It is a diagram showing an example of a process of acquiring a MIB after receiving a response to a wake-up signal according to one aspect related to this embodiment.

Modes for Carrying Out the Invention

[0015] Hereinafter, this embodiment will be described.

[0016] "A, and / or, B" may be a term including "A", "B", or "A and B".

[0017] A parameter or piece of information may have one or more values, meaning that the parameter or information may include at least one parameter or piece of information that has those one or more values. A top-level parameter may be a single top-level parameter. A top-level parameter may be an information element (IE) that includes multiple parameters.

[0018] Figure 1 is a conceptual diagram of a wireless communication system according to one embodiment of this model. In Figure 1, the wireless communication system comprises terminal devices 1A to 1B and base station devices 3A to 3C. Hereinafter, terminal devices 1A to 1B will also be referred to as terminal device 1 (UE). Hereinafter, base station devices 3A to 3C This is also referred to as base station equipment 3 (gNB). Base station equipment 3A and base station equipment 3B use different frequencies. The following is used. Base station equipment 3A and base station equipment 3C use different frequencies. For example, base station equipment 3A uses low-band frequencies, while base station equipment 3B and base station equipment 3C use high-band frequencies. The coverage of base station equipment 3B is configured within the coverage of base station equipment 3A. The coverage of base station equipment 3C is configured within the coverage of base station equipment 3A. Base station equipment 3A is configured as a cell that continues to transmit periodic common signals (such as system information) without entering a sleep state. Base station equipment 3B is configured as a cell (referred to as a Network Energy Saving Cell: NES Cell) that enters a sleep state and transmits common signals (such as system information) on demand. Base station equipment 3C enters a sleep state, A cell (referred to as a Network Energy Saving Cell: NES Cell) is configured to transmit common signals (such as system information) on demand. The cell configured by base station equipment 3A has coverage They may also be called cells. The cells configured by base station equipment 3B and the cells configured by base station equipment 3C may also be called capacity cells.

[0019] Terminal device 1A transmits a wake-up signal to base station device 3B, triggering base station device 3B to transmit on-demand system information. Terminal device 1A receives information about the wake-up signal (information about the configuration of the wake-up signal) from base station device 3A. Base station device 3B detects the wake-up signal transmitted from terminal device 1A and transmits on-demand system information. Terminal device 1B transmits a wake-up signal to base station device 3C, triggering base station device 3C to transmit on-demand system information. Terminal device 1B receives information about the wake-up signal (information about the configuration of the wake-up signal) from base station device 3A. Base station device 3C detects the wake-up signal transmitted from terminal device 1B and transmits on-demand system information. Base station device 3A may transmit the information about the wake-up signal as system information. Base station device 3A may transmit the information about the wake-up signal as a system information block.

[0020] Base station equipment 3A and base station equipment 3B are connected by wire or wireless and exchange information and cooperate. Base station equipment 3B may notify base station equipment 3A of information regarding the wake-up signal configuration. Base station equipment 3B may notify base station equipment 3A of information regarding the updated wake-up signal configuration. Base station equipment 3A may notify base station equipment 3B of information regarding the updated wake-up signal configuration. Base station equipment 3B may notify terminal equipment 1A in the coverage of information indicating that the wake-up signal configuration has been updated.

[0021] Base station equipment 3A and base station equipment 3C are connected by wire or wireless and communicate and cooperate by exchanging information. Base station equipment 3C may notify base station equipment 3A of information regarding the wake-up signal configuration. Base station equipment 3C may notify base station equipment 3A of information regarding the updated wake-up signal configuration. Base station equipment 3A may notify base station equipment 3C of information regarding the updated wake-up signal configuration.

[0022] Base station device 3 may transmit on-demand system information for a specific period of time. Base station device 3 may stop transmitting on-demand system information if it determines that terminal device 1 has moved outside of coverage.

[0023] Information regarding the wake-up signal includes information regarding the wake-up signal's resources. At least one of the following is included in the wake-up signal information: information regarding the wake-up signal's time resources, frequency resources, and code resources. Information regarding the wake-up signal also includes the cell ID of the corresponding cell, the cell frequency (ARFCN: Absolute radio-frequency channel number), and the frequency bandwidth of the uplink BWP. Frequency position, TDD frame configuration (uplink and downlink frame configuration), transmit power This may include information about parameters, control resource sets / search spaces, etc.

[0024] The wake-up signal may use the same configuration as the random access channel signal.

[0025] Base station device 3 includes MCG (Master Cell Group) and SCG (Secondary Cell Group) It may consist of one or both of the following. An MCG is a group of serving cells consisting of at least a PCell (Primary Cell). An SCG is a group of serving cells consisting of at least a PSCell (Primary Secondary Cell). A PCell may be a serving cell given based on the initial connection. An MCG may consist of one or more SCells (Secondary Cells). An SCG may consist of one or more SCells. A serving cell identity is a serving cell This is a short identifier for identifying a serving cell. The serving cell identifier may also be provided by a higher-level parameter.

[0026] In a wireless communication system, the terminal device 1 and the base station device 3 may use one or more communication methods. For example, CP-OFDM (Cyclic Prefix-Orthogonal Frequency Division Multiplex) may be used in the downlink of the wireless communication system. In addition, either CP-OFDM or DFT-s-OFDM (Discrete Fourier Transform-spread-Orthogonal Frequency Division Multiplex) may be used in the uplink of the wireless communication system. Here, DFT-s-OFDM is a communication method in which transform precoding is applied prior to signal generation in CP-OFDM. Here, transform precoding is also called DFT precoding.

[0027] As shown in Figure 1, the base station device 3 may consist of one transceiver (or a transmitting point, a transmitting device, a receiving point, a receiving device, and a transceiver). On the other hand, in some cases, the base station device 3 may consist of multiple transceivers. If the base station device 3 consists of multiple transceivers, each of the multiple transceivers may be located at a different geographical location.

[0028] For a given subcarrier spacing μ, the subcarrier spacing (SCS) Δf is given by Δf = 2 μ It may also be ×15kHz. For example, the subcarrier spacing setting μ may be 0, 1, 2, 3, or 4.

[0029] Time unit (T) c = 1 / (Δf max ×N f ) may be used to represent length in the time domain. Here, Δf maxIt may also be 480 kHz. Also, N f It may also be 4096. Also, the constant κ is κ = Δf max ×N f / (Δf ref N f,r ef ) may also be 64. Also, Δf ref may be 15 kHz. N f,re f is 2048.

[0030] The transmission of the downlink / uplink signal may be organized by a radio frame (system frame, frame) of length Tf. Here, Tf = (Δfmax × Nf / 100) × Ts = 10 ms may also be applicable.

[0031] The radio frame may be composed of 10 subframes. Here, the length of the subframe Tsf = (Δfmax × Nf / 1000) × Ts = 1 ms may also be applicable. Also, the number of OFDM symbols per subframe may be Nsubframe, μsymb = Nslotsymb × Nsubframe, μslot. may also be applicable.

[0032] As the unit in the time domain of the communication method used in the wireless communication system, an OFDM symbol is used. For example, the OFDM symbol may be used as the unit in the time domain of CP - OFDM. Also the OFDM symbol may be used as the unit in the time domain of DFT - s - OFDM.

[0033] A slot may be composed of a plurality of OFDM symbols. For example, one slot may be composed of Nslotsymb consecutive OFDM symbols. For example, in the case of normal CP setting, Nslotsymb may be 14. Also, in the case of extended CP setting, Nslotsymb may be 12.

[0034] Slots may be indexed in the time domain. For example, the slot index nμs may be an integer value in the range of 0 to Nsubframe,μslot-1 in the subframe. They may be given in order. Also, the slot index nμs,f in the wireless frame The integer values ​​may be given in ascending order, ranging from 0 to Nframe, μslot-1.

[0035] Figure 2 shows an example of the configuration of a resource grid according to one aspect of this embodiment. In the resource grid of Figure 2, the horizontal axis is the OFDM symbol index lsym, and the vertical axis is the subcarrier index ksc. The resource grid of Figure 2 contains Nsize, μgrid, x × NRBsc subcarriers and Nsubframe, μsymb OFDM symbols. Here, Nsize, μgrid, and x represent the bandwidth of the SCS intrinsic carrier. The units of the values ​​of Nsize, μgrid, and x are resource blocks.

[0036] Within the resource grid, the subcarrier index ksc and OFDM symbol index The resource identified by `lsym` is a Resource Element (RE: ResourceElement). It is also called by this name.

[0037] A Resource Block (RB) contains NRBsc consecutive subcarriers. Resource blocks include common resource blocks, physical resource blocks (PRBs), and virtual resource blocks (VRBs). It is a general term. For example, NRBsc = 12 is also acceptable.

[0038] The BandWidth Part (BWP) may be configured as a subset of the resource grid. Here, the BWP set for the downlink is also called the downlink BWP. The BWP set for the uplink is also called the uplink BWP.

[0039] The following describes an example of the configuration of a terminal device 1 according to one aspect of this embodiment.

[0040] Figure 3 is a schematic block diagram showing the configuration of a terminal device 1 according to one aspect of this embodiment. As shown in the figure, the terminal device 1 is composed of a wireless transceiver unit 10 and a higher-layer processing unit 14. The wireless transceiver unit 10 includes an antenna unit 11, an RF (Radio Frequency) unit 12, and The upper layer processing unit 14 is composed of at least a part or all of the baseband unit 13. The upper layer processing unit 14 is composed of at least a part or all of the media access control layer processing unit 15 and the wireless resource control layer processing unit 16. The wireless transceiver unit 10 is also referred to as the transmitting unit, receiving unit, or physical layer processing unit.

[0041] The wireless transceiver unit 10 performs physical layer processing.

[0042] For example, the wireless transceiver 10 may generate the baseband signal for the uplink physical channel. Here, the transport blocks delivered from the upper layer on the UL-SCH may be located on the uplink physical channel. For example, the wireless transceiver 10 may generate the baseband signal for the uplink physical signal.

[0043] For example, the wireless transceiver 10 may attempt to detect information transmitted by the downlink physical channel. Here, the transport block of the information transmitted by the downlink physical channel may be delivered to the upper layer on the DL-SCH. For example, the wireless transceiver 10 may attempt to detect information transmitted by the downlink physical signal.

[0044] The receiving unit of terminal device 1 receives PDCCH. The receiving processing unit of terminal device 1 receives the downlink frequency. Performs processing to receive PDCCH in the wavenumber band (cell, component carrier, carrier). The receiving processing unit of terminal device 1 performs demodulation, decoding, and other processing on the PDCCH. Terminal device 1 The receiving unit processing of the terminal device 1 performs the process of receiving PDCCH and the process of detecting downlink control information (DCI format). The receiving unit processing of terminal device 1 includes in the detected DCI format The system decodes the information and outputs the decoded results to each component.

[0045] The receiving unit (receiving processing unit) of terminal device 1 receives the PDSCH. The receiving unit of terminal device 1 receives the PDSCH below The part that receives PDSCH in the link frequency band (cell, component carrier, carrier) The receiving unit of terminal device 1 performs demodulation, decoding, and other processing on the PDSCH. The receiver unit of device 1 receives MAC CE via PDSCH. The receiver unit of terminal device 1 decodes the information contained in the received MAC CE and outputs the decoded result to each unit. The receiver unit of terminal device 1 receives RRC signaling via PDSCH. The receiver unit of terminal device 1 outputs the received RRC signaling to the upper layer processing unit 14.

[0046] The receiving unit of terminal device 1 receives system information via PDSCH. The receiving unit of terminal device 1 The receiving unit of terminal device 1 outputs the received system information to the upper layer processing unit 14. The receiving unit of terminal device 1 receives on-demand system information via PDSCH. The receiving unit of terminal device 1 outputs the received on The demand system information is output to the upper layer processing unit 14. The receiving unit of terminal device 1 receives the PDSCH. Information regarding the wake-up signal is received via [a specific method]. The receiving unit of terminal device 1 may receive information regarding the wake-up signal included in the system information. The receiving unit of terminal device 1 receives signals from multiple base station devices 3. The receiving unit of terminal device 1 receives signals from multiple base station devices 3 at different frequencies.

[0047] Information regarding the wake-up signal includes at least information indicating the wake-up signal resources. These resources include time resources (radio frames, subframes, OFDM symbols) (period, offset, interval) and frequency resources (BWP, etc.). This refers to at least one of the following: source block (start position, number) or code resource (preamble, sequence).

[0048] There may be multiple pieces of information regarding a wake-up signal. Information regarding a single wake-up signal may consist of multiple pieces of information indicating the wake-up signal resource. For example, information indicating two wake-up signal resources (WakeUp signal configuration #1, WakeUp signal configuration #2) may be configured. Each piece of information regarding a wake-up signal includes information identifying the corresponding cell, such as a cell ID. The information indicating the resource of each wake-up signal is associated with information identifying the corresponding cell, such as a cell ID. For example, terminal device 1 selects either the cell corresponding to WakeUp signal configuration #1 or the cell corresponding to WakeUp signal configuration #2 and transmits the wake-up signal. For example, terminal device 1 cannot select the cell corresponding to WakeUp signal configuration #1 and selects the cell corresponding to WakeUp signal configuration #2 and transmits the wake-up signal. For example, terminal device 1 cannot select both the cell corresponding to WakeUp signal configuration #1 and the cell corresponding to WakeUp signal configuration #2 and does not transmit a wake-up signal.

[0049] The receiving unit of terminal device 1 receives the PBCH. The receiving unit of terminal device 1 receives the MIB. The receiver of terminal device 1 receives the MIB on PBCH. PBCH is the channel name. MIB is the name of the information element. The receiver of terminal device 1 receives information about PDCCH (pdcch-ConfigSIB1) in the MIB of PBCH. The information about PDCCH includes information about the control resource set (controlResourceSetZero). The information about the control resource set is the control resource set This includes at least a portion of the following: information regarding the number of constituent resource blocks, information regarding the number of symbols in the control resource set, information regarding the position (offset) of the resource blocks that make up the control resource block, and information regarding the multiplexing pattern of the SSB and the control resource set. However, this is also acceptable. Information regarding PDCCH includes information regarding the search space (searchSpaceZero). Information regarding the search space may include at least some information regarding the slots that constitute the search space, and information regarding the symbols that constitute the search space. PDCCH The information concerned is related to PDCCH, which schedules on-demand system information. The PDCCH information is information about PDCCH that schedules PDSCH, including on-demand system information.

[0050] The receiving unit of terminal device 1 receives information about the GSCN (Global Synchronization Channel Number) in the MIB of the PBCH. The information about the GSCN may also be information about the offset from a reference GSCN. The reference GSCN may be the GSCN from which the SSB was detected. Information about the GSCN This is information about the GSCN of the cell that provides information about the wake-up signal. The receiving unit of terminal device 1 receives information about the GSCN (Global Synchronization Channel Number) by reinterpreting the PDCCH information (pdcch-ConfigSIB1) in the MIB. Terminal device 1 reinterprets the PDCCH information (pdcch-ConfigSIB1) in the MIB when predetermined information (ssb-SubcarrierOffset) contained in the MIB shows a specific value. The predetermined information (ssb-SubcarrierOffset) is the value of the frequency domain offset on a subcarrier basis between the SSB and the resource block grid. It also indicates that the specified information (ssb-SubcarrierOffset) indicates that SIB1 is provided. The specified information (ssb-SubcarrierOffset) indicates the gap between the SSB and the resource block grid. The value of the frequency domain offset per carrier indicates that SIB1 is provided. The predetermined information (ssb-SubcarrierOffset) may indicate that SIB1 is not provided. The predetermined information (ssb-SubcarrierOffset) is used to show SSB and resource blocking. The absence of a value for the frequency domain offset per subcarrier between lids indicates that SIB1 will not be provided. The given information (ssb-SubcarrierOffset) may indicate that on-demand SIB1 will be provided. The given information (ssb-SubcarrierOffset) is the value for the frequency domain offset per subcarrier between the SSB and the resource block grid. The absence of this indication shows that on-demand SIB1 is provided.

[0051] This shows the frequency domain offset in subcarrier units between the SSB and the resource block grid. If the predetermined information (ssb-SubcarrierOffset) indicates a value different from the value indicating that SIB1 is provided or not provided, the terminal device 1 will not use MIB The information regarding PDCCH (pdcch-ConfigSIB1) is interpreted as indicating information regarding GSCN. When changed, a value indicating that on-demand SIB1 is provided is set to the predetermined information (ssb-SubcarrierOffset). Percentage of subcarriers between the SSB and the resource block grid. If the predetermined information (ssb-SubcarrierOffset) indicates a value different from the value indicating the wavenumber domain offset or the value indicating that SIB1 is not provided, terminal device 1 interprets the MIB's PDCCH information (pdcch-ConfigSIB1) as indicating information about the GSCN of the cell that provides the wake-up signal information. Based on the received GSCN information, terminal device 1 detects the cell that provides the wake-up signal information and receives the wake-up signal information. Frequency domain off-subcarrier between SSB and resource block grid If the value indicating the offset is shown by predetermined information (ssb-SubcarrierOffset), terminal device 1 interprets the MIB's PDCCH information (pdcch-ConfigSIB1) as indicating information about the control resource set and information about the search area. If the value indicating that SIB1 is not provided is shown by predetermined information (ssb-SubcarrierOffset), terminal device 1 interprets the MIB's PDCCH information (pd We interpret cch-ConfigSIB1) as indicating information about the GSCN of the cell providing the SIB1.

[0052] If SIB1 is to be provided in the relevant cell, the first value is set in the predetermined information (ssb-SubcarrierOffset). If SIB1 is to be provided in another cell, the second value is set in the predetermined information (ssb-SubcarrierOffset). If on-demand SIB1 is to be provided in the relevant cell, the third value is set in the predetermined information (ssb-SubcarrierOffset).

[0053] The receiving unit of terminal device 1 receives a response to the wake-up signal. Base station device 3 transmits a response to the detected wake-up signal. The response to the wake-up signal indicates that base station device 3 has detected the wake-up signal. The response to the wake-up signal may be received via PDSCH. The response may be MAC CE. The response to the wake-up signal may use PDCCH, which includes a DCI format scrambled with a specific RNTI. The receiving unit of terminal device 1 is After sending the wake-up signal, the response to the wake-up signal may be monitored only within a specific time window.

[0054] The receiving unit of terminal device 1 receives random access responses. The receiving unit of terminal device 1 monitors random access responses within the random access response window. The receiving unit of terminal device 1 monitors contention resolution messages within the contention resolution timer.

[0055] The receiving unit of terminal device 1 receives SSB signals. The receiving unit of terminal device 1 selects the SSB signal with the best reception.

[0056] The transmitting unit (also called the transmitting processing unit) of terminal device 1 transmits a HARQ-ACK. The transmitting processing unit of terminal device 1 transmits a HARQ-ACK to PDSCH. The transmitting processing unit of terminal device 1 transmits an uplink HARQ-ACK is transmitted in the link frequency band (cell, component carrier, carrier).

[0057] The transmitting unit of terminal device 1 transmits a random access preamble. The transmitting unit of terminal device 1 transmits a random access preamble using a preamble format. The transmission processing unit of terminal device 1 transmits a random access preamble using PRACH. The transmitting unit of terminal device 1 transmits RACH on the RACH occasion. The transmitting unit of terminal device 1 periodically RACH is sent on the RACH occasion set. The transmitting unit of terminal device 1 receives the receiving unit of terminal device 1. Select a RACH occasion from one or more RACH occasions corresponding to the SSB selected in the FIDE. The RACH (Random Access Preamble) is sent on the selected RACH occasion.

[0058] The transmitting unit of terminal device 1 retransmits the random access preamble. The transmitting unit of terminal device 1 retransmits the random access preamble on multiple RACH occasions. The transmitter of device 1 may retransmit the random access preamble up to the set maximum number (maximum number of retransmissions of the random access preamble). The transmitter of terminal device 1 may perform power ramping when retransmitting the random access preamble. The transmitter of terminal device 1 may set the transmission power of the random access preamble based on the initial random access preamble power. The transmitter of terminal device 1 may randomly select a random access preamble from a plurality of random access preambles set for contention-based random access.

[0059] The transmitter of terminal device 1 transmits a wake-up signal. The transmitter of terminal device 1 transmits a wake-up signal in the first cell. The transmitter of terminal device 1 may transmit a random access preamble as the wake-up signal. The transmitter of terminal device 1 uses the preamble format set as the resource for the wake-up signal to transmit a random access preamble. A sespreamble may be transmitted. The transmitting unit of terminal device 1 may transmit a random access preamble using PRACH, which is set as the wake-up signal resource. The transmitting unit of terminal device 1 uses the RACH occasion set as the resource for the wake-up signal. A wake-up signal may be transmitted. The transmitting unit of terminal device 1 selects one or more RACH occasions set as wake-up signal resources from the receiving unit of terminal device 1. Select a RACH occasion from one or more RACH occasions corresponding to the selected SSB. A wake-up signal may be sent at the selected RACH occasion.

[0060] The transmitting unit of terminal device 1 may retransmit the wake-up signal. The transmitting unit of terminal device 1 may retransmit the random access preamble set as the wake-up signal resource. The transmitting unit of terminal device 1 may retransmit the random access preamble set as the wake-up signal resource on multiple RACH occasions. The transmitting unit of terminal device 1 may retransmit the random access preamble set as a wake-up signal resource up to the set maximum number. The transmitting unit of terminal device 1 may perform power ramping when retransmitting the random access preamble using the power ramping value set as a wake-up signal resource.

[0061] The transmitting unit of terminal device 1 may select a wake-up signal that is capable of transmitting a wake-up signal and transmit the selected wake-up signal. Terminal device 1 may also select a cell from among one or more cells whose reception quality is above a certain threshold to transmit the wake-up signal.

[0062] The transmitting unit of terminal device 1 transmits signals to multiple base station devices 3. The transmitting unit of terminal device 1 transmits signals to multiple base station devices 3 at different frequencies.

[0063] The upper layer processing unit 14 outputs the uplink data (transport block) generated by user operations, etc., to the wireless transceiver unit 10. The upper layer processing unit 14 processes the MAC layer, packet Packet Data Convergence Protocol (PDCP) layer, wireless link This component handles the control (RLC: Radio Link Control) layer and the RRC layer processing.

[0064] The media access control layer processing unit (MAC layer processing unit) 15, which is part of the upper layer processing unit 14, performs MAC layer processing.

[0065] The wireless resource control layer processing unit 16, which is part of the upper layer processing unit 14, performs RRC layer processing. The line resource control layer processing unit 16 processes various setting information / parameters (RRC parameters) of its own device. It manages the wireless resource control layer processing unit 16 sets various setting information / parameters (RRC parameters) based on the higher layer signals received from the base station device 3. The line resource control layer processing unit 16 sets various setting information / parameters (RRC parameters) based on information indicating various setting information / parameters (RRC parameters) received from the base station device 3. This setting information includes physical channels, physical signals (i.e., the physical layer), and MAC layers. This may include information related to the processing or configuration of the PDCP layer, RLC layer, and RRC layer. These parameters may also be higher-layer parameters.

[0066] For example, the wireless resource control layer processing unit 16 processes RRC messages on a certain logical channel. The RRC parameters contained in the data may be obtained and set in the memory area of ​​terminal device 1. The RRC parameters set in the memory area of ​​terminal device 1 may be provided to the lower layer.

[0067] The wireless resource control layer processing unit 16 processes the RRC signaling received from the base station device 3. The control resource set is configured. The wireless resource control layer processing unit 16 configures the control resource set The wireless resource control layer processing unit 16 sets (configures) the search area within the set. The wireless resource control layer processing unit 16 sets (configures) the PDCCH candidates to be monitored within the control resource set. The control unit 16 sets the number of PDCCH candidates to be monitored within the control resource set (configure The wireless resource control processing unit 16 sets (configures) the Aggregation level of the PDCCH candidates to be monitored within the control resource set. The wireless resource control layer processing unit 16 sets the DCI format to be monitored.

[0068] The wireless resource control layer processing unit 16 sets the RACH occasion based on the RRC parameters (RRC signaling) received from the base station device 3. The transmitter unit of the terminal device 1 transmits RACH at the set RACH occasion. The transmitter unit of the terminal device 1 transmits a random access preamble with RACH. The wireless resource control layer processing unit 16 sets the RACH occasion based on the RRC parameters (RRC signaling) received from the base station device 3. The maximum number of retransmissions for the random access preamble may be set based on the meter.

[0069] The wireless resource control layer processing unit 16, through RRC signaling (system information), Information indicating the configuration of the wake-up signal is received. Information indicating the configuration of the wake-up signal also includes information indicating the resources of the wake-up signal. Information indicating the configuration of the wake-up signal may also include information regarding monitoring the response to the wake-up signal. Information regarding monitoring the response to the wake-up signal may include information regarding the control resource set and information regarding the search area. Information indicating the configuration of the wake-up signal may also include information indicating the maximum number of times the wake-up signal can be transmitted. Information indicating the configuration of the wake-up signal may also include information indicating the response window value for the wake-up signal. Information indicating the configuration of the wake-up signal may also include information indicating the power ramping value for the wake-up signal. Information indicating the configuration of the wake-up signal may also include information indicating the initial power value for the wake-up signal.

[0070] The wireless resource control layer processing unit 16 sets various parameters of the wake-up signal (parameters related to time resources, parameters related to frequency resources, parameters related to code resources, parameters related to power resources, etc.) for the transmitting unit of the terminal device 1. When transmitting the wake-up signal, the transmitting unit of the terminal device 1 generates and transmits the wake-up signal using the parameters set by the wireless resource control layer processing unit 16.

[0071] The wireless resource control layer processing unit 16 receives RRC signaling (sys) from the base station device 3. Based on the system information, the RACH preamble format (PRACH preamble format) used for the uplink slot is set. Either Short preamble format or Long preamble format is set as the RACH preamble format (PRACH preamble format).

[0072] The Long preamble format is a RACH preamble format (PRACH preamble format) with a signal configuration of multiple slots. The Short preamble format is a RACH preamble format with a signal configuration of a single slot. It is a preamble format (PRACH preamble format). For example, the Long preamble format is The RACH preamble has a sequence length of 839 and a time length of 3 slots (3ms) or 4 slots (4ms) in the RACH preamble format (PRACH preamble format). In NR, the Long preamble format is the RACH preamble format of Format 1 or Format 2. For example, the Short preamble format is the RACH preamble with a sequence length of 839 and a time length of 1 slot (1ms). This is a preamble format. In NR, the Short preamble format is Format 0, Format 3. That is the case.

[0073] The media access control layer processing unit (MAC layer processing unit) 15 performs HARQ operations and MAC CE resolution. MAC layer processing is performed, including reading and processing based on the decoding results.

[0074] The wireless resource control layer processing unit 16 generates functional information based on the functions provided by the terminal device 1. The information may be included in the RRC message and transmitted to the base station device 3.

[0075] The wireless transceiver 10 performs modulation processing, encoding processing, and transmission processing. The wireless transceiver 10 generates a physical signal by encoding processing, modulation processing, and baseband signal generation processing (conversion to a time-continuous signal) of the data (transport block), and transmits it to the base station device 3 or the terminal device 1.

[0076] The wireless transceiver 10 performs demodulation, decoding, and reception processing. Based on the demodulation and decoding processing of the received physical signal, the wireless transceiver 10 outputs the transport block of the detected information to the upper layer processing unit 14 on the DL-SCH.

[0077] The RF unit 12 converts the signal received via the antenna unit 11 into a baseband signal (downconvert) and removes unwanted frequency components. The RF unit 12 outputs the baseband signal to the baseband unit 13.

[0078] The baseband section 13 converts the analog signal input from the RF section 12 into a digital signal. The baseband section 13 then converts the converted digital signal into a CP (Cyclic Prefix). The relevant portion is removed. The baseband section 13 performs a Fast Fourier Transform (FFT) on the signal from which the CP has been removed to extract the signal in the frequency domain.

[0079] The baseband section 13 performs an inverse fast Fourier transform (IFFT) on the physical signal to generate OFDM symbols. The baseband section 13 then processes the generated OFDM symbols. A CP is added to the volt to generate a baseband digital signal. The baseband unit 13 converts the baseband digital signal into an analog signal. The baseband unit 13 outputs the converted analog signal to the RF unit 12.

[0080] The RF section 12 uses a low-pass filter to remove unwanted frequency components from the analog signal input from the baseband section 13 and upconverts the analog signal to the carrier frequency. The RF unit 12 converts (converts) and generates an RF signal. The RF unit 12 transmits the RF signal via the antenna unit 11. The RF unit 12 also amplifies power. The RF unit 12 may also have a function to control the transmission power. The RF unit 12 is also referred to as the transmission power control unit.

[0081] The following describes an example of the configuration of a base station device 3 according to one aspect of this embodiment.

[0082] Figure 4 is a schematic block diagram showing the configuration of a base station device 3 according to one aspect of this embodiment. As shown in the figure, the base station device 3 is composed of a wireless transceiver unit 30 and a higher layer processing unit 34. The wireless transceiver unit 30 is composed of an antenna unit 31, an RF (Radio Frequency) unit 32 and a baseband unit 33. The higher layer processing unit 34 is It is composed of a media access control layer processing unit 35 and a wireless resource control layer processing unit 36. The wireless transceiver unit 30 is also referred to as the transmitting unit, receiving unit, or physical layer processing unit.

[0083] The upper layer processing unit 34 performs processing at the MAC (Medium Access Control) layer, the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer, and the Radio Resource Control (RRC) layer. The MAC layer is also called the MAC sublayer. The PDCP layer is also called the PDCP sublayer. The RLC layer is also called the RLC sublayer. The RRC layer is also called the RRC sublayer.

[0084] The media access control layer processing unit 35, which is part of the upper layer processing unit 34, performs MAC layer processing. Here, the MAC layer processing involves mapping between logical channels and transport channels, 1 Alternatively, multiplexing of MAC SDUs (Service Data Units) into transport blocks, UL-S Decomposition of transport blocks delivered from the physical layer on the CH into one or more MAC SDUs , Application of HARQ (Hybrid Automatic Repeat request) to transport blocks, This may also include processing some or all of the scheduling requests.

[0085] The wireless resource control layer processing unit 36, located in the upper layer processing unit 34, performs RRC layer processing. RRC layer processing may include some or all of the following: management of broadcast signals, management of RRC connection / RRC idle status, and RRC reconfiguration. The wireless resource control layer processing unit 36 ​​generates or obtains downlink data (transport blocks), system information, RRC messages, MAC CE, etc., which are placed on the PDSCH, from the upper node, and outputs them to the wireless transceiver unit 30.

[0086] Furthermore, the wireless resource control layer processing unit 36 ​​manages various setting information / parameters (RRC parameters) for each terminal device 1. The wireless resource control layer processing unit 36 ​​uses signals from higher layers. Various setting information / parameters may be set for each terminal device 1. That is, the wireless resource control layer processing unit 36 ​​transmits / notifies information indicating various setting information / parameters. This setting information includes physical channels and physical signals (i.e., physical layer), MAC layer, and PDCP. The information may include details related to the processing or configuration of the layers, RLC layer, and RRC layer. These parameters may be higher-layer parameters. For example, the radio resource control layer processing unit 36 ​​may include RRC parameters in an RRC message on a logical channel and transmit it to the terminal device 1. Here, the RRC message may be mapped to one of the following: BCCH (Broadcast Control Channel), CCCH (Common Control Channel), or DCCH (Dedicated Control Channel).

[0087] The wireless resource control layer processing unit 36 ​​is included in the RRC message transmitted from the terminal device 1. Based on the RRC parameters, the RRC parameters to be transmitted to terminal device 1 may be determined. Here, the RRC message transmitted from terminal device 1 is related to the functional information report of terminal device 1. That's fine.

[0088] The wireless resource control layer processing unit 36 ​​sets a control resource set for the terminal device 1. Multiple PDCCH candidates are configured (set) within the set control resource set. The wireless resource control layer processing unit 36 ​​sets a search area for the terminal device 1. The wireless resource control layer processing unit 36 ​​sets a DCI format to be monitored in the search area for the terminal device 1. To determine.

[0089] The wireless resource control layer processing unit 36 ​​sets the DCI format to be applied to terminal device 1 within the control resource set. The RRC signaling is generated to indicate the DCI format to be applied. The wireless resource control layer processing unit 36 ​​sets one or more DCI formats to be applied in the transmission processing unit.

[0090] The wireless resource control layer processing unit 36 ​​configures settings for multiple search areas. Each of these settings for multiple search areas is indexed.

[0091] The wireless resource control layer processing unit 36 ​​sets resources for transmitting HARQ-ACK to terminal device 1. The wireless resource control layer processing unit 36 ​​sets resources for transmitting HARQ-ACK to PDSCH in the downlink frequency band (cell, component carrier, carrier). The line resource control layer processing unit 36 ​​allocates resources for transmitting HARQ-ACK to the PDSCH via the uplink Set the link frequency band (cell, component carrier, carrier).

[0092] The wireless resource control layer processing unit 36 ​​sets the RACH occasion. The control unit 36 ​​sets the period of the RACH occasion.

[0093] The wireless resource control layer processing unit 36 ​​may set the maximum number of random access preamble retransmissions for a random access channel. The wireless resource control layer processing unit 36 ​​may set the random access response window value for a random access channel. The wireless resource control layer processing unit 36 ​​may set the contention resolution timer value for a random access channel. The wireless resource control layer processing unit 36 ​​may set the power ramping value for a random access channel. The wireless resource control layer processing unit 36 ​​may set the initial random access preamble power value for a random access channel. The wireless resource control layer processing unit 36 ​​may set the total number of random access preambles for contention-based random access for a random access channel. The wireless resource control layer processing unit 36 ​​may set the number of random access channels frequency multiplexed in one time instance for a random access channel. The wireless resource control layer processing unit 36 ​​may set the RACH preamble format.

[0094] The wireless resource control layer processing unit 36 ​​sets the configuration of the wake-up signal. The wireless resource control layer processing unit 36 ​​sets the resources for the wake-up signal. The wireless resource control layer processing unit 36 ​​may set parameters related to monitoring the response to the wake-up signal. Parameters related to monitoring the response to the wake-up signal may include parameters related to the control resource set and parameters related to the search area. The wireless resource control layer processing unit 36 ​​may set the maximum number of times the wake-up signal is transmitted. The wireless resource control layer processing unit 36 ​​may set the response window value for the wake-up signal. The wireless resource control layer processing unit 36 ​​may set the power ramping value for the wake-up signal. The wireless resource control layer processing unit 36 ​​may set the initial power value for the wake-up signal. The wireless resource control layer processing unit 36 ​​may set the timer value for prohibiting the transmission of the wake-up signal. The wireless resource control layer processing unit 36 ​​transmits information indicating the configuration of the wake-up signal as system information from the transmission unit of the base station device 3.

[0095] The media access control layer processing unit (MAC layer processing unit) 35 performs HARQ operations and MAC CE operations. Performs MAC layer processing such as shaping.

[0096] The functions of the wireless transceiver 30 are the same as those of the wireless transceiver 10, so their explanation will be omitted as appropriate. The wireless transceiver 30 performs physical layer processing. Here, the physical layer processing may include some or all of the generation of baseband signals for physical channels, generation of baseband signals for physical signals, and detection of information transmitted by physical channels and detection of information transmitted by physical signals. The physical layer processing may also include mapping of transport channels to physical channels. Here, the baseband signal is also referred to as a time-continuous signal.

[0097] The wireless transceiver 30 may perform demodulation and / or decoding. The wireless transceiver 30 may deliver the transport block from the information detected based on the demodulation and decoding of the received physical signal to the upper layer on the UL-SCH. For example, the wireless transceiver 30 may generate the baseband signal of the downlink physical channel. Here, the transport block delivered from the upper layer on the DL-SCH may be placed on the downlink physical channel. For example, the wireless transceiver 30 may generate the baseband signal of the downlink physical signal.

[0098] The wireless transceiver 30 may perform some or all of the modulation, coding, and transmission processes. The wireless transceiver 30 may also generate a physical signal based on some or all of the coding, modulation, and baseband signal generation processes for the transport block. Good. The wireless transceiver 30 may place the physical signal in a BWP. The wireless transceiver 30 The generated physical signals may be transmitted. For example, the wireless transceiver 30 may attempt to detect information transmitted by the uplink physical channel. Here, the transport block of the information transmitted by the uplink physical channel may be delivered to the upper layer on the UL-SCH. For example, the wireless transceiver 30 may attempt to detect information transmitted by the uplink physical signals.

[0099] The wireless transceiver 30 grasps the SS (Search space) configured in the terminal device 1. The wireless transceiver 30 grasps the search area within the control resource set configured in the terminal device 1. The wireless transceiver 30 grasps the PDCCH candidates monitored in the terminal device 1. The search area is identified. The wireless transceiver 30 monitors each PDCCH candidate in the terminal device 1. Determine which control channel elements the auxiliary consists of (PDCCH candidate is composed of (The number of the control channel element is determined). The wireless transceiver 30 includes an SS finding unit, which finds the SS configured in the terminal device 1. The SS finding unit finds one or more PDCCH candidates in the control resource set, which is configured as the search space of the terminal device. SS finding unit This determines the number of PDCCH candidates (number of PDCCH candidates, PDCCH candidate numbers) configured in the search area of ​​the control resource set of terminal device 1.

[0100] The SS understanding unit understands the configuration of the search area within the control resource set (number of PDCCH candidates, OFDM symbols of the PDCCH candidates, and aggregation level of the PDCCH candidates). The transmission unit (transmission processing unit) of the wireless transceiver 30 transmits the PDCCH candidates within the search area of ​​the control resource set to the terminal device 1. Use this to transmit PDCCH.

[0101] The transmitting unit (also called the transmitting processing unit) of base station device 3 transmits PDCCH. The transmission processing unit of base station device 3 transmits a PDCCH using a PDCCH candidate that is being monitored at terminal device 1. The transmission processing unit of base station device 3 transmits a PDCCH using a resource that corresponds to a PDCCH candidate within the search area set for terminal device 1. The transmission processing unit of base station device 3 transmits a PDCCH using a resource that corresponds to a PDCCH candidate within the search area set for terminal device 1. The PDCCH is transmitted using the PDCCH candidates in the search region where taring is performed.

[0102] The receiving unit (also called the receiving processing unit) of base station device 3 receives a HARQ-ACK. The receiving processing unit of base station device 3 receives a HARQ-ACK for PDSCH. The receiving processing unit of base station device 3 The base station device 3 receives HARQ-ACKs in the uplink frequency band (cell, component carrier, carrier). The receiving processing unit of the base station device 3 receives HARQ-ACKs for the PDSCH in the downlink frequency band (cell, component carrier, carrier) managed by the base station device 3. ru.

[0103] The receiving unit of base station device 3 receives RACH. The receiving unit of base station device 3 performs random access preamble detection processing.

[0104] The wireless resource control layer processing unit 36 ​​sets a RACH occasion and transmits RRC parameters related to the set RACH occasion to the terminal device 1. The receiving unit of the base station device 3 receives RACH at the set RACH occasion. The receiving unit of the base station device 3 receives the random access preamble at RACH. The wireless resource control layer processing unit 36 ​​may also set a maximum value for the number of retransmissions of the random access preamble and transmit RRC parameters related to the set maximum value for the number of retransmissions of the random access preamble to the terminal device 1. The device may set a value for the random access response window and send RRC parameters related to the set random access response window value to the terminal device 1. The source control layer processing unit 36 ​​sets the value of the contention resolution timer and sends the RRC parameters related to the set contention resolution timer value to the terminal device It may also send to 1. The wireless resource control layer processing unit 36 ​​may set a power ramping value and send RRC parameters related to the set power ramping value to the terminal device 1. The wireless resource control layer processing unit 36 ​​sets the initial random access preamble power value and sets the RRC parameter related to the set initial random access preamble power value. It may also be transmitted to terminal device 1. The wireless resource control layer processing unit 36 ​​sets the total number of random access preambles for contention-based random access and the RRC program related to the set total number of random access preambles for contention-based random access. The meter may be transmitted to the terminal device 1. The wireless resource control layer processing unit 36 ​​sets the number of random access channels frequency multiplexed in one time instance and the RRC regarding the set number of random access channels frequency multiplexed in one time instance. Parameters may be sent to terminal device 1.

[0105] The receiving unit of base station device 3 receives the wake-up signal. The receiving unit of base station device 3 detects the wake-up signal. The receiving unit of base station device 3 performs wake-up signal detection processing. The receiving unit of base station device 3 does not continuously perform wake-up signal detection processing, but does so periodically at time intervals. By shortening the time that the receiving unit of base station device 3 performs the detection processing of the received signal, power consumption is reduced, and network energy saving is achieved.

[0106] The wireless resource control layer processing unit 36 ​​sets the wake-up signal resources and transmits RRC parameters related to the set wake-up signal resources (time resources, frequency resources, code resources, etc.) to the terminal device 1. The parameters related to the wake-up signal are set, and the RRC parameters related to the set wake-up signal parameters are transmitted to the terminal device 1. The wireless resource control layer processing unit 36, The preamble format of the random access preamble may be set as the resource for the wake-up signal, and the RRC parameters related to the set random access preamble format may be transmitted to the terminal device 1. Wireless Resource Control Layer Processing Unit 36 The Wireless Resource Control Layer Processing Unit 3 may set a RACH occasion as a resource for the wake-up signal and transmit the RRC parameters related to the set RACH occasion to the terminal device 1. 6 sets the maximum number of transmissions of the random access preamble as a resource for the wake-up signal, and the RRC program is set for the maximum number of transmissions of the random access preamble. The meter may be transmitted to the terminal device 1. The wireless resource control layer processing unit 36 ​​may set the value of the wake-up signal transmission disable timer and transmit the RRC parameter related to the set wake-up signal transmission disable timer value to the terminal device 1. The control unit 36 ​​may set the power ramping value for the wake-up signal and transmit the RRC parameters related to the set power ramping value for the wake-up signal to the terminal device 1. .

[0107] The transmitter unit of base station device 3 transmits PBCH. The transmitter unit of base station device 3 transmits MIB. The transmitting unit of base station device 3 transmits MIB using PBCH.

[0108] The transmitter unit of base station device 3 transmits information about the PDCCH (pdcch-ConfigSIB1) in the MIB of the PBCH. The information about the PDCCH includes information about the control resource set (controlResourceSetZero). The information about the control resource set includes the resources that make up the control resource set. Information regarding the number of resource blocks, information regarding the number of symbols in the control resource set, information regarding the position (offset) of the resource blocks that make up the control resource block, SSB and may include at least a portion of the information regarding the multiple patterns of the control resource set. The information regarding PDCCH includes information regarding the search space (searchSpaceZero). The information regarding the search space may include at least a portion of the information regarding the slots that make up the search space and the symbols that make up the search space. Information regarding PDCCH This is information regarding PDCCH, which schedules on-demand system information.

[0109] The transmitter unit of base station device 3 transmits information regarding the GSCN (Global Synchronization Channel Number) in the MIB of the PBCH. The information regarding the GSCN may also be information regarding the offset from the reference GSCN. The reference GSCN may be the GSCN from which SSB was detected. The information is about the GSCN of the cell that provides information about the wake-up signal. The transmitter of base station device 3 transmits information about the GSCN (Global Synchronization Channel Number) using the PDCCH information field (pdcch-ConfigSIB1) of the MIB. The local station 3 indicates a specific value using predetermined information (ssb-SubcarrierOffset) included in the MIB. This switches the information to be set in the MIB's PDCCH-related field (pdcch-ConfigSIB1). The specified information (ssb-SubcarrierOffset) is the subcarrier between the SSB and the resource block grid. The value of the frequency domain offset per carrier is also shown. The given information (ssb-SubcarrierOffset) may indicate that SIB1 is provided. The value of the frequency domain offset per subcarrier between the SSB and the resource block grid is given by the given information (ssb-SubcarrierOffset). The presence of the specified information (ssb-SubcarrierOffset) indicates that SIB1 is provided. The specified information (ssb-SubcarrierOffset) indicates that SIB1 is not provided. The absence of an offset value indicates that SIB1 is not provided. The given information (ssb-SubcarrierOffset) may indicate that on-demand SIB1 is provided. The given information (ssb-SubcarrierOffset) indicates the subcarrier between the SSB and the resource block grid. The absence of a value for the frequency domain offset in terms of carrier units indicates that an on-demand SIB1 is provided.

[0110] Base station equipment 3 controls the frequency range between SSB and resource block grid on a subcarrier basis. If the predetermined information (ssb-SubcarrierOffset) indicates a value different from the value indicating the region offset (a value indicating that SIB1 is provided) or a value indicating that SIB1 is not provided, the base station device 3 uses the MIB PDCCH information (pdcch-ConfigSIB1) to indicate the GSCN information. In other words, the base station device 3 sets the predetermined information (ssb-SubcarrierOffset) to a value indicating that on-demand SIB1 is provided. The base station device 3 uses SSB and resource blocks. If the predetermined information (ssb-SubcarrierOffset) indicates a value different from the value indicating the frequency domain offset on a subcarrier basis between the SSB and the resource block grid, or a value indicating that SIB1 is not provided, the base station device 3 uses the MIB's PDCCH information (pdcch-ConfigSIB1) to indicate the GSCN information of the cell providing the wake-up signal information. The base station device 3 indicates the value indicating the frequency domain offset on a subcarrier basis between the SSB and the resource block grid. If the value is indicated by predetermined information (ssb-SubcarrierOffset), the base station device 3 indicates information about the control resource set and information about the search area using MIB PDCCH information (pdcch-ConfigSIB1). If the base station device 3 indicates a value indicating that SIB1 is not provided by predetermined information (ssb-SubcarrierOffset), the base station device 3 indicates information about the GSCN of the cell that provides SIB1 using MIB PDCCH information (pdcch-ConfigSIB1).

[0111] The transmitting unit of base station device 3 transmits a response to the wake-up signal.

[0112] The RF unit 32 may convert the signal received via the antenna unit 31 into a baseband signal and remove unwanted frequency components. The RF unit 32 outputs the baseband signal to the baseband unit 33.

[0113] The baseband section 33 may digitize the baseband signal input from the RF section 32. The baseband section 33 may remove the portion corresponding to CP (Cyclic Prefix) from the digitized baseband signal. The baseband section 33 then uses the baseband signal from which CP has been removed. A Fast Fourier Transform (FFT) is applied to a sband signal, and the frequency The signal from the region may be extracted.

[0114] The baseband unit 33 may generate a baseband signal by performing an inverse fast Fourier transform (IFFT) on the physical signal. The baseband unit 33 may add a CP to the generated baseband signal. The baseband unit 33 may convert the baseband signal with the CP added into an analog. The baseband unit 33 may output the analogized baseband signal to the RF unit 32.

[0115] The RF unit 32 may remove extraneous frequency components from the baseband signal input from the baseband unit 33. The RF unit 32 may upconvert the baseband signal to the carrier frequency to generate an RF signal. The RF unit 32 may transmit the RF signal via the antenna unit 31. The RF unit 32 may also have a function to control the transmission power.

[0116] Each of the parts designated by reference numerals 10 to 16 in the terminal device 1 may be configured as a circuit. Each of the parts designated by reference numerals 30 to 36 in the base station device 3 may be configured as a circuit.

[0117] The following describes the physical channels and physical signals (physical signals) according to various aspects of this embodiment. A physical signal is a general term for downlink physical channels, downlink physical signals, uplink physical channels, and uplink physical channels. A physical channel is a general term for downlink physical channels and uplink physical channels. A physical signal is a general term for downlink physical signals and uplink physical signals.

[0118] An uplink physical channel may correspond to a set of resource elements that carry information generated in the upper layer. An uplink physical channel is a physical channel used in the uplink component carrier. An uplink physical channel may be transmitted by the wireless transceiver 10. An uplink physical channel may be received by the wireless transceiver 30. In a wireless communication system according to one aspect of this embodiment, at least some or all of the following uplink physical channels are used. ·PUCCH (Physical Uplink Control CHannel) ·PUSCH (Physical Uplink Shared CHannel) ·PRACH(Physical Random Access CHannel)

[0119] PUCCH transmits Uplink Control Information (UCI). It may be used for the purpose of (doing). Uplink control information may be placed in PUCCH. The line transmission / reception unit 10 may transmit a PUCCH containing uplink control information. The signal unit 30 may receive a PUCCH containing uplink control information.

[0120] Uplink control information (uplink control information bits, uplink control information sequence, uplink control information type) is channel state information (CSI), schedule Scheduling Request (SR), HARQ-ACK (Hybrid Automatic Repeat) This includes some or all of the request ACKnowledgement information. Note that the uplink control information may also include information not listed above.

[0121] Channel status information is also referred to as channel status information bits or channel status information sequences. Scheduling requests are also referred to as scheduling request bits or scheduling request sequences. HARQ-ACK information is also referred to as HARQ-ACK information bits or HARQ-ACK information sequences.

[0122] HARQ-ACK information corresponds to one transport block (TB) HA The RQ-ACK bit may be composed of an ACK (acknowledgement) or NACK (negative-acknowledgement) corresponding to the transport block. An ACK may indicate that the transport block has been decoded successfully. A NACK indicates that the transport block has not been decoded successfully. It may also indicate that it has not been decoded. The HARQ-ACK information may include one or more HARQ-ACK bits.

[0123] HARQ-ACK for transport blocks is also referred to as HARQ-ACK for PDSCH. Here, “HARQ-ACK for PDSCH” may refer to HARQ-ACK for the transport blocks included in the PDSCH.

[0124] A scheduling request may be used to request UL-SCH resources for initial transmission. The scheduling request bit is positive SR or This may be used to indicate any negative SR (scheduling). A positive SR in the Grease Request bit is also referred to as "a positive SR is transmitted." A positive SR may indicate that terminal device 1 is requesting UL-SCH resources for initial transmission. A negative SR in the Scheduling Request bit is also referred to as "a negative SR is transmitted." A negative SR may indicate that terminal device 1 is not requesting UL-SCH resources for initial transmission.

[0125] Channel status information includes the Channel Quality Indicator (CQI), and Pleco CQI may include some or all of the Precoder Matrix Indicator (PMI) and Rank Indicator (RI). CQI is a quality of the propagation path (e.g., propagation intensity). Alternatively, PMI is an indicator related to the quality of the physical channel, while PMI is an indicator related to the precoder. RI is an indicator related to the transmit rank (or transmit layer count).

[0126] Channel status information is an indicator of the reception status of the physical signal (e.g., CSI-RS) used for channel measurement. The value of the channel status information may be determined by terminal device 1 based on the reception status assumed by the physical signal used for channel measurement. Channel measurement may include interference measurement.

[0127] PUCCH may be accompanied by a PUCCH format, where the PUCCH format may be the format of the physical layer processing of PUCCH, or it may be the format of the information transmitted using PUCCH.

[0128] PUSCH provides uplink control information and one or both of the transport blocks. It may be transmitted for transmission. PUSCH transmits uplink control information, and transport It may be used to transmit one or both of the transformer blocks. It may be used to send at least some or all of the port block, HARQ-ACK, channel status information, and scheduling requests. PUSCH is a random action It is used at least to send message 3. PUSCH is not described above. It may be used to transmit information. Terminal device 1 may transmit uplink control information and a PUSCH containing one or both of the transport blocks. Station device 3 may receive uplink control information and PUSCH, which contains one or both of the transport blocks.

[0129] PRACH is an index for random access preambles (random access messages). It may be transmitted to convey (1). Terminal device 1 may transmit PRACH. The base station device 3 may receive PRACH. The terminal device 1 may transmit a random access preamble over PRACH. The base station device 3 transmits a random access preamble over PRACH. You may receive it.

[0130] PRACH sends a random access preamble (random access message 1). It is used at least for the initial connection establishment procedure, handover procedure, connection re-establishment procedure, and synchronization (timing adjustment) for sending PUSCH. , and at least used to indicate some or all of the requests for resources for PUSCH It's okay.

[0131] Uplink physical signals may correspond to a set of resource elements. Uplink physical signals do not have to be used to transmit information generated in the upper layer. However, uplink physical signals may be used to transmit information generated in the physical layer. Uplink physical signals may also be physical signals used in the uplink component carrier. Wireless transceiver 10 may transmit uplink physical signals. Wireless transceiver 30 may receive uplink physical signals. In the uplink of a wireless communication system according to one aspect of this embodiment, some or all of the following uplink physical signals may be used. ·UL DMRS(UpLink Demodulation Reference Signal) ·SRS(Sounding Reference Signal) ·UL PTRS(UpLink Phase Tracking Reference Signal) WakeUp Signal

[0132] UL DMRS is a general term for DMRS for PUSCH and DMRS for PUCCH.

[0133] The set of antenna ports for a PUSCH (DMRS associated with a PUSCH, DMRS included in a PUSCH, DMRS corresponding to a PUSCH) is given based on the set of antenna ports for the PUSCH. It may be obtained. For example, for PUSCH The set of antenna ports for the DMRS is the same as the set of antenna ports for the PUSCH. That's good too.

[0134] The propagation path of a pusher may be estimated from the DMRS for that pusher.

[0135] The set of antenna ports for DMRS for PUCCH (DMRS related to PUCCH, DMRS included in PUCCH, DMRS corresponding to PUCCH) may be the same as the set of antenna ports for PUCCH. stomach.

[0136] The propagation path of PUCCH may be estimated from the DMRS for the PUCCH.

[0137] The WakeUp Signal triggers the transmission of on-demand system information. It is used for the purpose of [doing something]. A similar signal configuration to PRACH may be used.

[0138] A downlink physical channel may correspond to a set of resource elements that transmit information generated in the upper layer. A downlink physical channel may also be a physical channel used in a downlink component carrier. The wireless transceiver 30 may transmit a downlink physical channel. The wireless transceiver 10 may receive a downlink physical channel. In the downlink of a wireless communication system according to one aspect of this embodiment, some or all of the following downlink physical channels may be used. ·PBCH(Physical Broadcast Channel) ·PDCCH (Physical Downlink Control Channel) ·PDSCH(Physical Downlink Shared Channel)

[0139] PBCH is transmitted to transmit either or both a Master Information Block (MIB) and / or physical layer control information. Here, physical layer control information is information generated at the physical layer. MIB is an RRC message delivered from a higher layer over the BCCH (Broadcast Control Channel).

[0140] PDCCH transmits Downlink Control Information (DCI). It is used for at least this purpose. Downlink control information may be placed in the PDCCH. End The terminal device 1 may receive the PDCCH containing downlink control information. The base station device 3 Alternatively, a PDCCH containing downlink control information may be transmitted.

[0141] Downlink control information may be transmitted in DCI format. The DCI format may be interpreted as the format of the downlink control information. Furthermore, the DCI format is... This may be interpreted as a set of downlink control information set in a certain downlink control information format.

[0142] Base station device 3 may notify terminal device 1 of downlink control information using PDCCH with DCI format. Here, terminal device 1 may monitor PDCCH to obtain downlink control information. Unless otherwise specified, DCI format and downlink control information may be described as equivalent. For example, base station device 3 may use DCI format The downlink control information may also be included in the packet and transmitted to the terminal device 1. Furthermore, the terminal device 1 uses the detected downlink control information contained in the DCI format to transmit the wireless transceiver 10 It may be controlled.

[0143] Downlink control information may include at least one of either a downlink grant (DL grant) or an uplink grant (UL grant). The DCI format used for PDSCH scheduling is the downlink DCI format. It is also called a set. The DCI format used for scheduling PUSCH is also called the uplink DCI format. Downlink grants are downlink assignments. It is also called a downlink assignment (DL assignment) or downlink allocation (DL allocation).

[0144] DCI format 0_0, DCI format 0_1, DCI format 1_0, and DCI format Matt 1_1, etc., are DCI formats. Uplink DCI formats are a general term for DCI formats 0_0 and DCI formats 0_1, etc. Downlink DCI formats are a general term for DCI formats 1_0 and DCI formats 1_1, etc.

[0145] DCI format 0_0 is used for scheduling PUSCH units to be placed in a cell. DCI format 0_1 ​​is for scheduling PUSCHs that are placed in a cell. It is used for scheduling PDSCHs placed in a cell. DCI format 1_0 is used for scheduling PDSCHs placed in a cell. It is used for the following purpose. DCI format 1_1 is a schedule of PDSCHs placed in a cell. It is used for rings.

[0146] DCI format 2_9 may be used to activate or deactivate cell DTX / DRX settings for one or more serving cells for one or more UEs. DCI format 2_9 may be transmitted with a CRC scrambled by NES-RNTI. Mat2_9 consists of some or all of the following information: Block number • Cell DTX / DRX indication

[0147] Is the DCI format an uplink DCI format or a downlink DCI format? The DCI format may include an Identifier for DCI formats field indicating whether it exists. The DCI format may also include a Frequency domain resource assignment field indicating frequency domain resource assignment. The matte may include a Time domain resource assignment field indicating the allocation of time-domain resources, which may be included in the DCI format. The DCI format may also include a Frequency hopping flag field indicating whether or not frequency hopping is applied. Channel modulation The DCI format may include an MCS field (Modulation and Coding Scheme field) indicating either or both the scheme and the target coding rate. The DCI format may also include a CSI request field indicating instructions for CSI reporting. It is also acceptable. The DCI format may include a BWP field indicating the BWP where the channel is located. The DCI format may also include a PDSCH to HARQ feedback timing indicator field indicating when the HARQ-ACK is sent. - May be included in the mat. A PUCCH resource indicator field indicating the PUCCH resource may be included in the DCI format. Note that various DCI formats may include additional fields other than those mentioned above.

[0148] Downlink grants scheduling for one PDSCH within one serving cell. It is used at least for the following purposes. Downlink grants are used at least for scheduling PDSCHs in the same slot from which the downlink grant was transmitted. A downlink grant may be used for scheduling a PDSCH in a slot different from the slot from which the downlink grant was transmitted. An uplink grant is one It is used at least for scheduling one PUSCH within the serving cell.

[0149] A PDSCH may be transmitted to transmit a transport block. A PDSCH may be used to transmit a transport block. A transport block may be placed on a PDSCH. Base station device 3 may transmit a PDSCH on which a transport block is placed. Terminal device 1 receives a PDSCH on which a transport block is placed. That's good too.

[0150] Downlink physical signals may correspond to a set of resource elements. Downlink physical signals do not have to be used to transmit information generated in the upper layer. However, downlink physical signals may be used to transmit information generated in the physical layer. Downlink physical signals may also be physical signals used in the downlink component carrier. Wireless transceiver 10 may receive downlink physical signals. Wireless transceiver 30 may transmit downlink physical signals. In the downlink of a wireless communication system according to one aspect of this embodiment, at least some or all of the following downlink physical signals may be used. ·Synchronization signal (SS) ·DL DMRS(DownLink DeModulation Reference Signal) ·CSI-RS(Channel State Information-Reference Signal) ·DL PTRS(DownLink Phase Tracking Reference Signal)

[0151] The synchronization signal is used by terminal device 1 to synchronize the downlink in the frequency domain and / or time domain. The synchronization signal is the PSS (Primary Synchronization Signal), and This is a general term for Secondary Synchronization Signals (SSS).

[0152] SS blocks (SS / PBCH blocks) are a combination of PSS, SSS, and PBCH, some or all of which are less than SS blocks. It is composed of including and.

[0153] The antenna ports for PSS, SSS, PBCH, and DMRS for PBCH may be the same.

[0154] A PBCH whose symbol is transmitted at a certain antenna port is a DMRS for a PBCH located in the slot to which the PBCH is mapped, and the SS / PBCH block containing the PBCH. It may be estimated by the DMRS for the PBCH included in the

[0155] DL DMRS is the sum of DMRS for PBCH, DMRS for PDSCH, and DMRS for PDCCH. It is a title.

[0156] The set of antenna ports for DMRS for PDSCH (DMRS associated with PDSCH, DMRS included in PDSCH, DMRS corresponding to PDSCH) is given based on the set of antenna ports for said PDSCH. It may be obtained. For example, the set of antenna ports for a DMRS for a PDSCH may be the same as the set of antenna ports for the PDSCH.

[0157] The propagation path of a PDSCH may be estimated from the DMRS for that PDSCH. A set of resource elements on which the signal is transmitted, and a DMRS symbol for the PDSCH. If the set of resource elements on which the symbol is transmitted belongs to the same Precoding Resource Group (PRG), the PDSCH on which the symbol of that PDSCH is transmitted at a given antenna port may be estimated by the DMRS for that PDSCH.

[0158] The antenna port for the DMRS for PDCCH (DMRS associated with PDCCH, DMRS included in PDCCH, DMRS corresponding to PDCCH) may be the same as the antenna port for PDCCH.

[0159] The propagation path of a PDCCH may be estimated from the DMRS for that PDCCH. A set of resource elements on which the signal is transmitted, and a DMRS symbol for the PDCCH. If the same precoder is applied (or assumed to be applied) to a set of resource elements on which the symbol is transmitted, the PDCCH on which the symbol of that PDCCH is transmitted at a given antenna port may be estimated by the DMRS for that PDCCH.

[0160] BCH (Broadcast Channel), UL-SCH (Uplink-Shared Channel), and DL-SCH (Downlink-Shared Channel) are transport channels.

[0161] The BCH in the transport layer may be mapped to the PBCH in the physical layer. Transport blocks delivered from higher layers to the BCH in the physical layer are placed in the PBCH in the physical layer. It may also be done. Furthermore, the UL-SCH in the transport layer may be mapped to the PUSCH in the physical layer. stomach.

[0162] The transport layer may apply HARQ (Hybrid Automatic Repeat reQuest) to the transport block.

[0163] BCCH (Broadcast Control Channel), CCCH (Common Control Channel), and DCCH (Dedicated Control Channel) are logical channels. For example, BCCH is used to manage MIBs. CCCH may be used to deliver RRC messages containing RRC information or RRC messages containing system information. CCCH may also be used to send RRC messages containing common RRC parameters across multiple terminal devices 1. Here, CCCH may be used, for example, at terminals that are not RRC connected. It may be used for terminal device 1. Also, DCCH may be used for a dedicated RRC message to a terminal device 1. It may be used to transmit a message. Here, DCCH is, for example, RRC connected. It may be used for terminal device 1.

[0164] BCCH may be mapped to BCH or DL-SCH. In other words, RRC containing MIB information Messages may be delivered to BCH. Also, RRC messages containing system information other than MIBs may be delivered. The message may be delivered to DL-SCH. Also, CCCH is mapped to DL-SCH or UL-SCH. In other words, an RRC message mapped to CCCH may be delivered to DL-SCH or UL-SCH. Furthermore, DCCH may be mapped to DL-SCH or UL-SCH. In other words, an RRC message mapped to DCCH may be delivered to DL-SCH or UL-SCH.

[0165] UL-SCH may be mapped to PUSCH. DL-SCH may be mapped to PDSCH. BCH It may be mapped to PBCH.

[0166] The media access control layer processing unit 15 may perform a random access procedure. The media access control layer processing unit 15 selects a RACH occasion to send a random access preamble. You may do so.

[0167] For example, downlink control information, including downlink grants or uplink grants, is transmitted and received via the PDCCH, including the C-RNTI (Cell-Radio Network Temporary Identifier).

[0168] One physical channel may be mapped to one serving cell. One physical channel may be mapped to one BWP configured to one carrier contained within one serving cell. It may also be used.

[0169] Terminal device 1 may have one or more control resource sets (CORESET) configured. Terminal device 1 may have PDCCH in one or more control resource sets. Monitors the PDCCH. Here, monitoring a PDCCH in one or more control resource sets may include monitoring one or more PDCCHs corresponding to each of the one or more control resource sets. Note that a PDCCH is one or more PDCCH candidates and / or may include a set of PDCCH candidates. Also, monitoring PDCCH is PDCCH, This may also include monitoring and detecting the DCI format transmitted via PDCCH.

[0170] Multiple control resource sets may be configured in terminal device 1, and each control resource set may be assigned an index (control resource set index). One or more control channel elements (CCEs) may be configured within a control resource set, and each CCE may be assigned an index (CCE index).

[0171] The set of PDCCH candidates monitored by terminal device 1 is defined in terms of the search space. The set of candidates is given by the search domain.

[0172] The search region may consist of one or more PDCCH candidates at one or more aggregation levels. The aggregation level of the PDCCH candidate is the number of CCEs that make up the PDCCH. This may be shown. The PDDCH candidate may be mapped to one or more CCEs.

[0173] A set of search regions may consist of at least one or more search regions. Each search region may be assigned an index (search region index).

[0174] Each of the search domain sets may be associated with at least one control resource set. Each of the search domain sets may be contained within one control resource set. For each of the search domain sets, the index of the control resource set associated with that search domain set You may be given a kusu.

[0175] Terminal device 1 performs a blind search for PDCCH candidates included in the search area within the control resource set. By doing so, the PDCCH and / or DCI for the terminal device 1 can be detected.

[0176] In various embodiments of this embodiment, unless otherwise specified, the number of resource blocks indicates the number of resource blocks in the frequency domain.

[0177] Terminal device 1 transmits uplink control information (UCI) to base station device 3. The UCI may be multiplexed and transmitted to PUCCH. Terminal device 1 may also transmit the UCI by multiplexing it to PUSCH. The UCI may include at least one of the following: Channel State Information (CSI), Scheduling Request (SR) indicating a request for PUSCH resources, and HARQ-ACK (Hybrid Automatic Repeat request ACKnowledgement) for downlink data (Transport block, Medium Access Control Protocol Data Unit: MAC PDU, Downlink-Shared Channel: DL-SCH, Physical Downlink Shared Channel: PDSCH).

[0178] HARQ-ACK is also known as ACK / NACK, HARQ feedback, HARQ-ACK feedback, HARQ response, HARQ-ACK response, HARQ information, HARQ-ACK information, HARQ control information, and HARQ-ACK control information. It is acceptable to refer to it by that name.

[0179] If the data is successfully decoded, an ACK is generated for that data. If the data is not decoded on the reverse side, a NACK is generated for that data. A HARQ-ACK may include at least one HARQ-ACK bit corresponding to at least one transport block. A HARQ-ACK bit may indicate an ACK (ACKnowledgement) or a NACK (Negative-ACKnowledgement) corresponding to one or more transport blocks. A HARQ-ACK is a HARQ-ACK codebook containing one or more HARQ-ACK bits. It may include at least one. The HARQ-ACK bits corresponding to one or more transport blocks may correspond to a PDSCH containing the one or more transport blocks.

[0180] HARQ control for a single transport block may be called a HARQ process. Each HARQ process may be assigned a unique HARQ process identifier. It includes a field that indicates the process identifier (HARQ process number).

[0181] An NDI (New Data Indicator) is shown in DCI format for each HARQ process. For example, the DCI format (DL assignment) containing the scheduling information of the PDSCH includes an NDI field. The NDI field is 1 bit. Terminal device 1 stores (remembers) the NDI value for each HARQ process. Base station device 3 stores (remembers) the NDI value for each HARQ process for each terminal device 1. Terminal device 1 receives the detected NDI field in DCI format. The base station device 3 updates the stored NDI value using a RD. The base station device 3 sets the updated NDI value, or the NDI value that has not been updated, into the NDI field in DCI format and sends it to the terminal device 1. Trust. Terminal device 1 detects the HARQ process identifier field in DCI format. For the HARQ process corresponding to the value, update the stored NDI value using the detected DCI-formatted NDI field.

[0182] Terminal device 1 receives based on the value of the NDI field in DCI format (DL assignment). Determine whether the transmitted transport block is a new transmission or a retransmission. Terminal device 1 determines the previously received NDI value for a transport block of a certain HARQ process. By comparing it with the value of the NDI field in the detected DCI format, if the value of the NDI field is toggled, it is determined that the received transport block is a new transmission. When base station device 3 transmits a transport block of a new transmission in a certain HARQ process, it toggles the value of the NDI stored for that HARQ process and sends the toggled NDI to terminal device 1. When base station device 3 transmits a transport block of a retransmission in a certain HARQ process, it does not toggle the value of the NDI stored for that HARQ process and sends the untoggled NDI to terminal device 1. Terminal device 1 compares the value of the NDI field in the detected DCI format with the value of the NDI field previously received for a transport block of a certain HARQ process, and If it is not toggled (i.e., the same), the received transport block is determined to be a retransmission. Note that "toggle" here means switching to a different value.

[0183] Terminal device 1 receives HARQ-ACK information in a slot indicated by the value of the HARQ instruction field included in DCI format 1_0 or DCI format 1_1, which corresponds to PDSCH reception. This may be reported to base station device 3 using the HARQ-ACK codebook.

[0184] Terminal device 1 may report HARQ-ACK information for PDSCH reception in slot n using PUCCH transmission and / or PUSCH transmission in slot n+k. Here, k is the PDSCH reception Slots indicated by the HARQ instruction field included in the corresponding DCI format It may also be a number. Furthermore, if the HARQ instruction field is not included in the DCI format, k may be given by a higher-level parameter.

[0185] Upper layer parameters are parameters included in the upper layer signal. The upper layer signal may be RRC (Radio Resource Control) signaling or MAC CE (Medium Access Control Control Element). Here, the upper layer signal may be the RRC layer signal or the MAC layer signal.

[0186] The signals in the upper layers may also be common RRC signaling. The RRC signaling system comprises at least some or all of the following features C1 to C3. That's fine. Feature C1) Maps to BCCH logical channels or CCCH logical channels Feature C2) Includes at least one radioResourceConfigCommon information element Feature C3) Maps to PBCH

[0187] The radioResourceConfigCommon information element (RRC signaling) may include information indicating settings commonly used in the serving cell. This information includes information about the random access procedure. The settings commonly used in the serving cell may include at least the RACH setting. The RACH setting may indicate at least one or more random access preamble indices. The RACH setting is the time / frequency resource of PRACH. It may at least show that.

[0188] Information indicating the RACH configuration includes information indicating the RACH occasion. The RACH occasion may be indicated in the form of a PRACH Configuration Index. A PRACH Configuration includes the RACH Preamble format, the Starting symbol indicating the starting position of the symbol where the RACH is placed within the slot, the PRACH duration, and the RACH occasion. Multiple PRACH Configurations may be pre-configured, and each PRACH Configuration may have a PRACH Configuration Index. An index is assigned. The RACH occasion is indicated by information showing the Subframe number where RACH is placed. In the PRACH Configuration, the RACH occasion for a set of 10 Subframes may be shown, and that RACH occasion may be repeated for every 10 Subframes. The period of RACH occasion is indicated by the number of subframes, which can be 1, 2, 4, 8, Any of the 16 may be shown. For example, the period of RACH occasion is the number of slots. This is indicated by , and may be 1, 2, 4, 8, 16, or 32. RACH The occasion period is determined by the location of the subframe where RACH is placed and the slot within the subframe. The position of the key may be recognized by indicating it.

[0189] The information indicating the RACH configuration may include information indicating the number of RACH occasions per SSB (ssb-perRACH-OccasionAndCB-PreamblesPerSSB). For example, 8 RACH occasions, or 4 RACH occasions, or 2 RACH occasions, or 1 RACH occasion may correspond to each SSB. For example, 1 RACH occasion may correspond to every 2 SSBs. For example, 1 RACH occasion corresponds to every 4 SSBs. For example, 1 RACH occasion may correspond to every 8 SSBs. For example, 1 RACH occasion may correspond to every 16 SSBs. . The information indicating the RACH configuration (ssb-perRACH-OccasionAndCB-PreamblesPerSSB) may include information indicating the number of contention-based preambles per SSB. For example, 4, or 8, or 12, or 16, or 24 , or 28, or 32, or 36, or 40, or 44, or 48, or 52, or 56, or 60, or 64 contention-based preambles may correspond to each SSB.

[0190] The information indicating the RACH configuration may include information indicating the maximum number of retransmission times of the random access preamble. More specifically, it is the maximum number of transmissions of the random access preamble before declaring the failure of the random access procedure. For example, any of 3, 4, 5, 6, 7, 8, 10, 20, 50, 100, or 200 may be indicated.

[0191] The information indicating the RACH configuration may include information indicating the RACH occasion, that is, information indicating the period of the RACH occasion. The information indicating the RACH configuration may include information indicating the maximum number of retransmission times of the random access preamble.

[0192] The information indicating the RACH configuration may include information indicating the number of random access preambles used for contention-based random access and contention-free random access. For example, as the number of random access preambles used for contention-based random access and contention-free random access, any number from 1 to 63 may be indicated. Each piece of information indicating the RACH configuration may independently include information indicating the number of random access preambles used for contention-based random access. For example, as the number of random access preambles used for contention-based random access, any number from 1 to 63 may be indicated.

[0193] The information indicating the RACH configuration may include information indicating the length of the random access response window used for detecting the random access response. For example, the length of the random access response window is indicated by the number of slots, and any number of slots such as 1, 2, 4, 8, 10, 20, 40, 80 may be indicated.

[0194] The information indicating the RACH configuration may include information indicating the power ramping step for PRACH For example, the power ramping step may be indicated as any of 0 dB, 2 dB, 4 dB, 6 dB.

[0195] The information indicating the RACH configuration may include information indicating the number of PRACH transmission intervals frequency multiplexed in one time instance. For example, in one time instance, the The number of PRACH transmission segments that are multiplexed is indicated as either 1, 2, 4, or 8. That's fine.

[0196] Information indicating the RACH configuration may include information indicating the value of the contention resolution timer. For example, the contention resolution timer value may be indicated by the number of subframes, and may be one of the following numbers: 8, 16, 24, 32, 40, 48, 56, or 64.

[0197] The information indicating the RACH configuration may include information indicating the initial random access preamble power (target power level on the network receiver side). For example, the initial random access preamble power may be any value between -202 dB and -60 dB in 2 dB increments.

[0198] Information indicating the wake-up signal setting is included in the higher-level signals. Information indicating the wake-up signal setting is included in the system information. Information indicating the wake-up signal setting is included in the system information block.

[0199] The information indicating the wake-up signal settings (configuration) includes information indicating the Occasion (WakeUp occasion) in which the wake-up signal resources are configured. The WakeUp occasion includes information indicating the starting position of the symbol in the slot where the wake-up signal is placed, information indicating the subframe number in which the wake-up signal is placed, and the sub in which the wake-up signal is placed. The information may include either information indicating the period of the frame or information indicating the period of the slot where the wake-up signal is placed. For example, the period of the WakeUp occasion may be the number of subframes. This is indicated by the number of slots, which may be 1, 2, 4, 8, or 16. For example, the WakeUp occasion period is indicated by the number of slots, which may be 1, 2, 4, 8, 16, or 3. Either of the two may be shown. The period of the WakeUp occasion is determined by the distribution of the wakeup signal. The location of the subframe to be placed and the location of the slot within the subframe may be indicated.

[0200] Information indicating the wake-up signal settings (configuration) may include information indicating the number of wake-up occasions per SSB. For example, each SSB may correspond to 8 wake-up occasions, 4 wake-up occasions, 2 wake-up occasions, or 1 wake-up occasion. For example, one WakeUp occasion may correspond to every two SSBs. For example, one WakeUp occasion may correspond to every four SSBs. For example, one WakeUp occasion may correspond to every eight SSBs. For example, one WakeUp occasion may correspond to every sixteen SSBs.

[0201] Information indicating the wake-up signal settings (configuration) may include information indicating the maximum number of times the wake-up signal will be transmitted (retransmitted). For example, it may be 3, 4, 5, 6, 7, 8, 10, 20, 50, 100, or 200 times.

[0202] Information indicating the wake-up signal settings (configuration) may include information indicating the length of the response window used to detect the wake-up signal response. For example, the length of the response window may be indicated by the number of slots, and may be 1, 2, 4, 8, 10, 20, 40, or 80 slots. The response window may also be a monitoring window for on-demand system information.

[0203] Information indicating the wake-up signal settings (configuration) may include information indicating the power ramping step for the wake-up signal. For example, the power ramping step may be 0dB, 2dB, 4dB, or 6dB.

[0204] Information indicating the wake-up signal settings (configuration) may include information indicating the initial wake-up signal power (target power level on the network receiver side). For example, the initial wake-up signal power may be any value between -202 dB and -60 dB in 2 dB increments.

[0205] The upper layer signals may be dedicated RRC signaling. Dedicated RRC signaling has at least some or all of the following features D1 to D2. That's good too. Feature D1) Mapped to DCCH logical channel Feature D2) Includes at least one radioResourceConfigDedicated information element

[0206] The radioResourceConfigDedicated information element may include at least information indicating settings specific to terminal device 1. The radioResourceConfigDedicated information element includes information indicating BWP settings. It may include at least the following. The setting of the BWP may at least indicate the frequency resources of the BWP.

[0207] For example, MIB, first system information, and second system information may be included in the common RRC signaling. Also, higher-layer messages that are mapped to the DCCH logical channel and include at least radioResourceConfigCommon may be included in the common RRC signaling. Also, messages that are mapped to the DCCH logical channel and include radioResourceConfigCommon information Upper layer messages that do not contain reporting elements may be included in dedicated RRC signaling. Also upper layer messages that are mapped to the DCCH logical channel and at least contain the radioResourceConfigDedicated information element may be included in dedicated RRC signaling.

[0208] The first system information may at least contain information related to RACH resources. The first system information may contain information indicating the configuration of Random access (RACH settings). The first system information may at least contain information related to the configuration of initial connection. The second system information may be system information other than the first system information.

[0209] The radioResourceConfigDedicated information element may at least contain information related to RACH resources. The radioResourceConfigDedicated information element may at least contain information related to the configuration of initial connection.

[0210] Information related to the reception of PDCCH may include information related to the ID indicating the destination of PDCCH. The ID indicating the destination of PDCCH may be the ID used for scrambling the CRC bits added to PDCCH. The ID indicating the destination of PDCCH is also called RNTI (Radio Network Temporary Identifier). Information related to the reception of PDCCH may include information related to the ID used for scrambling the CRC bits added to PDCCH. The terminal device 1 can attempt to receive PDCCH based at least on the information related to the ID included in PBCH. possible.

[0211] ​RNTI may include C-RNTI (Common-RNTI), Temporary C-RNTI (TC-RNTI), and RA-RNTI (Random Access-RNTI). C-RNTI is used at least to schedule user data for RRC-connected terminal device 1. Temporary C-RNTI is used at least to schedule random access messages 4. Temporary C-RNTI schedules PDSCH containing data mapped to CCCH in logical channels. It is used at least for tracking. RA-RNTI is a random access message 2 It is used at least for scheduling.

[0212] PDSCH is used at least to send / receive transport blocks. PDSCH may be used at least to send / receive random access messages 2 (random access responses). PDSCH is used for initial access parameters PDSCH may be used to transmit / receive system information including data. It may be used at least to send / receive random access messages 4.

[0213] PBCH is used to transmit / receive information about PDCCH (pdcch-ConfigSIB1). Information regarding PDCCH is related to the control resource set (controlResourceSetZero). This includes information about the control resource set, information about the number of resource blocks that make up the control resource set, information about the number of symbols in the control resource set, information about the position (offset) of the resource blocks that make up the control resource block, and SSB and control It may include at least some information regarding the multiple patterns of resource sets. The information includes information about the search area (searchSpaceZero). Information regarding the search area may include at least part of the information regarding the slots that constitute the search area and the information regarding the symbols that constitute the search area. Information regarding PDCCH is, This is information regarding PDCCH, which schedules on-demand system information.

[0214] PBCH transmits / receives information regarding GSCN (Global Synchronization Channel Number). It is used for the purpose of. Information about the GSCN may also be information about the offset from the reference GSCN. The reference GSCN may be the GSCN in which the SSB was detected. Information about the GSCN is This is information about the GSCN of the cell that provides information about the wake-up signal. The information about the GSCN is information about the GSCN of the cell that provides SIB1. Information about the PDCCH (pdcch-ConfigSIB1) is reused to send and receive information about the GSCN (Global Synchronization Channel Number). Depending on the value of predetermined information (ssb-SubcarrierOffset) included in the MIB This identifies the information related to the PDCCH (pdcch-ConfigSIB1). The specified information (ssb-SubcarrierOffset) indicates the value of the frequency domain offset on a subcarrier basis between the SSB and the resource block grid.

[0215] Terminal device 1 attempts to establish a connection with base station device 3. Figure 5 shows an example of an initial connection procedure (4-step contention-based RACH procedure) according to one aspect of this embodiment. The initial connection procedure consists of at least some of steps 5101 to 5104. Here, the contention-based random access procedure will be described. Note that the contention-based random access procedure can also be used for purposes other than initial connection.

[0216] Prior to performing step 5101, terminal device 1 performs time-frequency synchronization of the downlink. A synchronization signal (SSB) is used for terminal device 1 to perform time-frequency synchronization of the downlink. Terminal device 1 uses the synchronization signal transmitted from base station device 3.

[0217] The synchronization signal may include the ID of the target cell (cell ID) when transmitted. The synchronization signal may include a sequence generated at least based on the cell ID when transmitted. The inclusion of the cell ID in the synchronization signal may mean that a sequence of synchronization signals is given based on the cell ID. The synchronization signal may be beam-applied and transmitted.

[0218] The beam exhibits the phenomenon where the antenna gain differs depending on the direction. The beam may be provided based at least on the directivity of the antenna. Alternatively, the beam may be provided based at least on the phase transformation of the carrier signal. Furthermore, the beam may be provided by applying a precoder.

[0219] Step 5101 is the step in which terminal device 1 transmits RACH to base station device 3. SSB and RACH occasions are associated. Multiple RACH occasions are associated with the SSB. Terminal device 1 recognizes the RACH occasion associated with each SSB from the information indicating the RACH settings. Terminal device 1 selects a RACH occasion to send RACH from one or more RACH occasions corresponding to the detected SSB. Terminal device 1 sends RACH at the selected RACH occasion.

[0220] Terminal device 1 receives information indicating the configuration of the random access channel, specifically the RACH occasion. The terminal device 1 randomly selects one random access preamble from among several random access preambles indicated by the information indicating the configuration of the random access channel. The terminal device 1 may set the transmit power of the random access preamble based on the initial random access preamble power indicated by the information indicating the configuration of the random access channel.

[0221] Step 5102 is the step in which the base station device 3 responds to the terminal device 1 for random access message 1. This response is also referred to as random access message 2. Random access message 2 may be transmitted via PDSCH. A PDSCH containing access message 2 is scheduled by a PDCCH. The included CRC bits may be scrambled by RA-RNTI. Random access message 2 may be transmitted including a special uplink grant. This special uplink grant is also referred to as a random access response grant. This special uplink grant may be included in the PDSCH containing random access message 2. Access response grants may include at least Temporary C-RNTIs.

[0222] Terminal device 1 determines whether it receives random access message 2 (random access response) within the random access response window. If terminal device 1 determines that it did not receive random access message 2 within the random access response window, it determines that random access message 1 (random access preamble) was not detected by base station device 3 and resumes processing from step 5101.

[0223] Terminal device 1 may set a random access response window of a value (length) indicated by the information showing the configuration of the random access channel.

[0224] Step 5103 is when terminal device 1 requests an RRC connection to the target cell. This is the sending step. The request for the RRC connection is also referred to as Random Access Message 3. Random Access Message 3 may be sent via PUSCH, which is scheduled by the Random Access Response Grant. Message 3 may include an ID used to identify terminal device 1. This ID may be an ID managed at a higher layer. This ID may be an S-TMSI (SAE Temporary Mobile Subscriber Identity). This ID may be mapped to CCCH in the logical channel.

[0225] Step 5104 is the step in which the base station device 3 sends a contention resolution message to the terminal device 1. The contention resolution message is a message sent by the base station device 3 to the terminal device 1. This is also referred to as dam access message 4. After sending random access message 3, terminal device 1 monitors the PDCCH to schedule a PDSCH containing random access message 4. Random access message 4 may include a collision avoidance ID. Here, the collision avoidance ID is used to resolve collisions where multiple terminal devices 1 transmit signals using the same radio resource. The collision avoidance ID is also referred to as UE contention resolution identity.

[0226] In step 5104, the terminal device 1, having sent a random access message 3 containing an ID (e.g., S-TMSI) used to identify the terminal device 1, includes a collision resolution message. The random access message 4 is monitored. If the collision avoidance ID contained in the random access message 4 is equal to the ID used to identify the terminal device 1, the terminal device 1 may consider the collision resolution to have been successfully completed and set the value of Temporary C-RNTI in the C-RNTI field. A terminal device 1 with the value of Temporary C-RNTI set in the C-RNTI field is considered to have completed the RRC connection.

[0227] Terminal device 1 determines whether it has received random access message 4 (collision resolution message) within the contention resolution timer. Note that the contention resolution timer starts measuring due to the transmission of random access message 3. If terminal device 1 determines that it has not received random access message 4 within the contention resolution timer, it determines that random access message 3 was not received by base station device 3 and resumes processing from step 5101.

[0228] Terminal device 1 may set a contention resolution timer of a value (length) indicated by the information showing the configuration of the random access channel.

[0229] In a series of random access procedures, the number of times step 5101 is performed corresponds to the number of times the random access preamble is retransmitted. When the random access preamble is retransmitted, power ramping may be applied to the transmission power setting of the random access preamble. In other words, the transmission power may be set higher by the power ramping value. Terminal device 1 may set the value indicated in the information indicating the configuration of the random access channel to the upper limit of the number of times the random access preamble is retransmitted. Terminal device 1 may set the value indicated in the information indicating the configuration of the random access channel to the power ramping value.

[0230] Before initiating the initial connection procedure using the random access procedure in the NES Cell, terminal device 1 transmits a wake-up signal, receives a response to the wake-up signal, receives a PBCH to obtain information about the PDCCH, receives an SIB1 based on the obtained information about the PDCCH, and obtains information (parameters) about the random access procedure from the received SIB1. In other words, terminal device 1 performs a PBCH receiving operation to receive an SIB1 containing information about the random access procedure, triggered by receiving a response to the wake-up signal. For example, if terminal device 1 receives a PBCH in the NES Cell that indicates that an SIB1 is provided on demand and that the GSCN of the cell providing information about the wake-up signal configuration is available, and obtains information about the wake-up signal configuration in the cell at the frequency indicated by the GSCN, terminal device 1 transmits a wake-up signal in the NES Cell, receives a response to the wake-up signal, and then re-acquires the MIB of the PBCH in the NES Cell. The reacquired MIB shows information about the PDCCH, and terminal device 1 receives the SIB1 based on the PDCCH information, obtains information about the random access procedure, and starts the initial connection procedure using the random access procedure. For example, if terminal device 1 detects a cell that provides information about the wake-up signal configuration before detecting an NES cell, terminal device 1 sends a wake-up signal with the NES cell, receives a response to the wake-up signal, and then acquires the MIB of the PBCH with the NES cell. Terminal device 1 detects the SSB with the NES cell to synchronize, but the MIB of the PBCH received at this time does not show information about the PDCCH, but rather information about the GSCN of the cell that provides information about the wake-up signal configuration. Therefore, after receiving a response to the wake-up signal, terminal device 1 receives the PBCH to obtain information about the PDCCH and acquires the MIB.

[0231] Based on the detection of the wake-up signal, base station device 3 recognizes that terminal device 1 needs to receive information about PDCCH in order to receive SIB1. After sending a response to the wake-up signal, device 3 modifies the MIB information of the PBCH and transmits the MIB. Specifically, base station device 3 changes the ssb-SubcarrierOffset, which was set to a value indicating that on-demand SIB1 is provided, to a value indicating that SIB1 is provided. Specifically, the base station device 3 changes the settings of pdcch-ConfigSIB1, which was set to information about the GSCN of the cell that provides information about the wake-up signal configuration, to information about the control resource set of the PDCCH that schedules SIB1 and information about the search area. After changing and transmitting, base station device 1 transmits the MIB of the PBCH with the information settings changed, and then transmits the original The settings are reset to allow the PBCH to send its MIB. Base station device 1 wakes up. After sending a response to the signal, the PBCH will send a modified MIB for a limited time only. Alternatively, after sending a response to the wake-up signal, base station device 1 shall send a specific number of MIBs of the PBCH with modified information settings. Base station device 3, which sent the MIB with the changed settings, will send SIB1. Terminal device 1, upon receiving the MIB, performs SIB1 reception. In this way, necessary Only in this case will pdcch-ConfigSIB1 show information about the PDCCH; otherwise, pdcch-ConfigSIB1 will show the GSCN of the cell that provides information about the wake-up signal configuration. It can be done.

[0232] Here, ssb-SubcarrierOffset may remain unchanged, and only pdcch-ConfigSIB1 may be changed. After the base station device 3 sends a response to the wake-up signal, it sets ssb-SubcarrierOffset with information indicating that on-demand SIB1 is provided, and information about PDCCH. The configured pdcch-ConfigSIB1 may also be sent. After terminal device 1 receives a response to the wake-up signal, ssb-SubcarrierOffset is on demand for the received MIB. While acknowledging that a specific SIB1 is provided, it is understood that pdcch-ConfigSIB1 is configured with information about the PDCCH, not information about the GSCN of the cell that provides the wake-up signal configuration. It may be interpreted that, after a certain period of time or a specific number of times, pdcch-ConfigSIB1 is configured with information about the GSCN of the cell that provides the wake-up signal configuration.

[0233] Figure 6 shows the MIB after receiving the response to the wake-up signal according to one aspect of this embodiment. This figure shows an example of the process of obtaining the wake-up signal. Terminal device 1, which sent the wake-up signal, receives a response to the wake-up signal (step S201). Upon receiving the response to the wake-up signal, terminal device 1 receives the PBCH, obtains the MIB, and obtains information about the PDCCH (step S202). The information about the PDCCH includes the control resource set of the PDCCH that schedules the PDSCH, including the SIB1, and information about the search area. Based on the information about the PDCCH, terminal device 1 obtains the SIB1 and obtains information about the random access procedure (step S203). The information about the random access procedure includes the uplink frequency and information about RACH. Based on the obtained information about the random access procedure, terminal device 1 starts the random access procedure for initial connection (step S204).

[0234] As described above, in a cell that supports on-demand transmission of system information, a wake-up signal is transmitted, a response to the wake-up signal is received, a Master Information Block (MIB) is obtained after receiving the response, information about the Physical Downlink Control Channel (PDCCH) is obtained from the MIB, and based on the information about the PDCCH... By obtaining System Information Block 1 (SIB1) and performing a random access procedure based on the information contained in SIB1, it is possible to avoid the concentrated provision of information regarding PDCCH in cells that provide information regarding the wake-up signal configuration. If information regarding the wake-up signal configuration is provided in a cell, and information regarding PDCCH is provided for multiple NES cells, the overhead burden will be concentrated in that cell. Information regarding PDCCH is provided for each cell where wake-up signals are transmitted and received. This enables efficient transmission and reception of on-demand system information.

[0235] The programs that run on the base station device 3 and terminal device 1 according to this embodiment are configured to implement the functions of the above embodiment according to this embodiment using the CPU (Central Processing Unit) ) may also be a program that controls (a program that makes the computer function). The information handled by these devices is temporarily stored in RAM (Random Access Memory) during processing, and then stored in various RO such as Flash ROM (Read Only Memory). It is stored on the M drive or HDD (Hard Disk Drive) and read and repaired by the CPU as needed. Correct writing is performed.

[0236] Furthermore, the terminal device 1 and a part of the base station device 3 in the above-described embodiment may be implemented using a computer. In that case, the program for implementing this control function may be recorded on a computer-readable recording medium, and the program recorded on this recording medium may be read by a computer system and executed.

[0237] Furthermore, the term "computer system" as used herein refers to the computer system built into terminal device 1 or base station device 3, and includes hardware such as the OS and peripheral devices. In addition, "computer-readable recording medium" refers to portable media such as flexible disks, magneto-optical disks, ROMs, CD-ROMs, and storage devices such as hard disks built into computer systems.

[0238] Furthermore, "computer-readable recording media" may include those that dynamically hold programs for a short period of time, such as communication lines used when transmitting programs via networks such as the Internet or communication lines such as telephone lines, as well as those that hold programs for a certain period of time, such as volatile memory within a computer system that acts as a server or client in such cases. In addition, the above-mentioned program may be for the purpose of realizing some of the functions described above, and may also be a program that can realize the above-mentioned functions in combination with a program already recorded in the computer system.

[0239] Terminal device 1 may consist of at least one processor and at least one memory containing computer program instructions (computer program). The memory and computer program instructions (computer program) may be configured to cause terminal device 1 to perform the operations and processing described in the above embodiment using the processor. Base station device 3 may consist of at least one processor and at least one memory containing computer program instructions (computer program). The memory and computer program instructions (computer program) may be configured to cause base station device 3 to perform the operations and processing described in the above embodiment using the processor.

[0240] Furthermore, the base station device 3 in the above-described embodiment can also be realized as an assembly (device group) composed of multiple devices. Each device constituting the device group may have some or all of the functions or functional blocks of the base station device 3 related to the above-described embodiment. The device group only needs to have a complete set of the functions or functional blocks of the base station device 3. In addition, the terminal device 1 related to the above-described embodiment can also communicate with the base station device as an assembly.

[0241] Furthermore, the base station device 3 in the above-described embodiment is EUTRAN (Evolved Universal Terrestrial Radio Access Network) and / or NG-RAN (NextGen RAN, NR RAN) Alternatively, the base station device 3 in the above-described embodiment may also be connected to the eNodeB and / or gNB. It may possess some or all of the functions of the corresponding higher-level node.

[0242] Furthermore, some or all of the terminal device 1 and base station device 3 in the above-described embodiment may be implemented as LSIs, which are typically integrated circuits, or as chipsets. Each functional block of terminal device 1 and base station device 3 may be individually chipped, or partially, All components may be integrated into a single chip. Furthermore, the integrated circuit implementation method is not limited to LSIs; it may also be implemented using dedicated circuits or general-purpose processors. Additionally, if advancements in semiconductor technology lead to the emergence of integrated circuit technologies that can replace LSIs, integrated circuits using those technologies may also be used.

[0243] Furthermore, although the above-described embodiment mentions a terminal device as an example of a communication device, the present invention is not limited to this and can also be applied to stationary or non-movable electronic devices installed indoors or outdoors, such as terminal devices or communication devices for AV equipment, kitchen equipment, cleaning and washing machines, air conditioning equipment, office equipment, vending machines, and other household appliances.

[0244] While embodiments of this invention have been described in detail above with reference to the drawings, the specific configuration is not limited to these embodiments, and design modifications and the like that do not depart from the gist of this invention are also included. Furthermore, the present invention can be modified in various ways within the scope of the claims, and embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of this invention. In addition, configurations in which elements described in each of the above embodiments that produce similar effects are substituted for each other are also included. [Explanation of Symbols]

[0245] 1 (1A, 1B, 1C) Terminal device 3 Base station equipment 10, 30 Wireless Transceiver Unit 11, 31 Antenna section 12, 32 RF section 13, 33 Baseband section 14, 34 Upper Layer Processing Unit 15, 35 Media Access Control Layer Processing Unit 16, 36 Wireless Resource Control Layer Processing Unit

Claims

1. A terminal device comprising a processor and a memory for storing computer program code, wherein the device transmits a wake-up signal, receives a response to the wake-up signal, acquires an MIB after receiving the response, and obtains information relating to PDCCH from the MIB. To obtain, to obtain SIB1 based on the information regarding PDCCH, and to include in SIB1 A terminal device that performs random access procedures based on the information provided.

2. The information regarding the PDCCH is at least related to the control resource set and is in the search area. The terminal device according to claim 1, which includes information relating thereto.

3. After receiving the above response, it is understood that the information element pdcch-ConfigSIB1 indicates information about the PDCCH. The terminal device according to claim 1.

4. A communication method used in a terminal device, comprising the steps of: transmitting a wake-up signal; receiving a response to the wake-up signal; and, after receiving the response, the MIB The steps include obtaining the MIB, obtaining information about the PDCCH from the MIB, and the PDCCH A communication method comprising the steps of obtaining an SIB1 based on information and performing a random access procedure based on the information contained in the SIB1.

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