Terminal device and communication method

Abstract

The Synchronization Signal Block (SSB) can be efficiently adapted between terminal equipment and base station equipment. [Solution] Information indicating multiple configurations of a synchronization signal block SSB (e.g., SSB burst period) is received, a signaling indicating one of the multiple configurations is received (e.g., in the primary cell), and a synchronization signal block SSB of the configuration indicated by the signaling is received (e.g., in the secondary cell) during the active section of Cell DTX (Cell Discontinuous Transmission).

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 technological 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 attributable to the wireless access network. Efforts are being made to reduce 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] The application of transmitting a common signal or a common channel to terminal devices is being considered. The application of transmitting a time-domain synchronous signal block SSB is being considered. By adaptively controlling the transmission of synchronous signal block SSB, it is being considered to shorten the time that base station equipment transmits SSB and thereby reduce energy consumption. In this context, one aspect of the present invention makes it possible to efficiently perform adaptive transmission of synchronous signal block SSB. The present invention provides a terminal device and a communication method used with 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, which receives information indicating a plurality of SSB configurations. The system receives a signaling indicating one of the above-mentioned configurations, and during the active interval of the Cell DTX, it receives an SSB of the configuration indicated by the signaling.

[0008] (2) Furthermore, the primary cell receives the signaling and the secondary cell receives the SSB with the configuration indicated by the signaling.

[0009] (3) Furthermore, the above configuration includes at least the period of the SSB burst.

[0010] (4) Furthermore, SSB is not received during the inactive section of Cell DTX.

[0011] (5) A second aspect of the present invention is a communication method used in a terminal device, comprising a plurality of SSBs The process includes receiving information indicating a configuration, receiving a signaling indicating one of the plurality of configurations, and receiving an SSB of the configuration indicated by the signaling during the active section of the Cell DTX.

[0012] (6) Furthermore, the primary cell receives the signaling and the secondary cell receives the SSB with the configuration indicated by the signaling.

[0013] (7) Furthermore, the configuration includes at least the period of the SSB burst.

[0014] (8) Furthermore, SSB is not received during the inactive section of Cell DTX. [Effects of the Invention]

[0015] According to this invention, the adaptation of the transmission of the synchronization signal block SSB can be efficiently performed between the terminal device and the base station device. efficiently.

Brief Description of the Drawings

[0016] [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 the terminal device 1 according to one aspect of this embodiment. [Figure 4] It is a schematic block diagram showing the configuration of the base station device 3 according to one aspect of this embodiment. [Figure 5] It is a diagram showing an example of the dynamic control of the period of the SSB burst with respect to the active section of Cell DTX. [Figure 6] It is a diagram showing an example of the process of determining the period of the SSB burst set for the active section of Cell DTX according to one aspect of this embodiment.

Modes for Carrying Out the Invention

[0017] Hereinafter, embodiments of the present invention will be described.

[0018] "A, and / or, B" may be a term including "A", "B", or "A and B".

[0019] That a parameter or information indicates one or more values may mean that the parameter or the information at least includes the parameter or the information indicating the one or more values. The upper layer parameter may be a single upper layer parameter. The upper layer parameter may be an information element (IE: Information Element) including a plurality of parameters.

[0020] Figure 1 is a conceptual diagram of a wireless communication system according to one aspect of this embodiment. In Figure 1, the wireless communication system comprises terminal devices 1A to 1C and base station devices 3A to 3B. Hereinafter, terminal devices 1A to 1C will also be referred to as terminal device 1 (UE). Hereinafter, base station devices 3A to 3B will also be referred to as base station device 3 (gNB).

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] Time unit (T) c = 1 / (Δf max ×N f ) may be used to represent length in the time domain. Here, Δf max =480kHz is also acceptable. f It may also be = 4096. Furthermore, the constant κ is given by κ = Δf max ×N f / (Δfref N f,r ef ) = 64 may also be used. Also, Δf ref may be 15 kHz. N f,re f is 2048.

[0026] The transmission of downlink / uplink signals may be organized by a radio frame (system frame, frame) of length Tf. Here, Tf = (Δfmax × Nf / 100) × Ts = 10 ms may also be used.

[0027] 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 used. Also, the number of OFDM symbols per subframe may be Nsubframe, μsymb = Nslotsymb × Nsubframe, μslot. may also be used.

[0028] 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.

[0029] 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 = 14 may also be used. Also, in the case of extended CP setting, Nslotsymb = 12 may also be used.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] The following describes an example of the configuration of a terminal device 1 according to one aspect of this embodiment.

[0036] 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.

[0037] The wireless transceiver unit 10 performs physical layer processing.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] The receiving unit of terminal device 1 receives the PDSCH. The receiving processing unit of terminal device 1 receives the downlink frequency. Performs processing to receive PDSCH in the wavenumber band (cell, component carrier, carrier). The receiving processing unit of terminal device 1 performs demodulation, decoding, and other processing on the PDSCH. Terminal device 1 The receiving processing unit receives MAC CE via PDSCH. The receiving processing unit of terminal device 1 receives The information contained in the MAC CE is decoded, and the decoded results are output to each unit. The receiving processing unit of terminal device 1 receives the RRC signaling via PDSCH. The receiving processing unit of terminal device 1 outputs the received RRC signaling to the upper layer processing unit 14.

[0042] 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.

[0043] 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.

[0044] 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).

[0045] 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.

[0046] 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.

[0047] 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.

[0048] The media access control layer processing unit (MAC layer processing unit) 15 provided in the upper layer processing unit 14 is the MAC layer Perform the process.

[0049] 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.

[0050] 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.

[0051] 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 search area within the control resource set. The wireless resource control layer processing unit 16 configures the PDCCH candidates to be monitored within the control resource set. The control unit 16 sets (configures) the number of PDCCH candidates to be monitored within the control resource set. 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.

[0052] 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 RRC parameters received from the base station device 3. The maximum number of retransmissions for the random access preamble may be set based on the meter.

[0053] The wireless resource control layer processing unit 16 uses RRC signaling to perform random access channel Information indicating the configuration of the channel may be received. Information indicating the configuration of the random access channel may include at least information indicating the period of RACH occasions. Information describing the configuration of a random access channel may include at least information indicating the maximum number of retransmissions of the random access preamble for the random access channel. Information describing the configuration of a random access channel may include at least information indicating the value of the random access response window for the random access channel. Information describing the configuration of a random access channel may include at least information indicating the power ramping value for the random access channel. Information describing the configuration of a random access channel may include at least information indicating the value of the contention resolution timer for the random access channel. Information describing the configuration of a random access channel may include at least information indicating the total number of random access preambles for contention-based random access for the random access channel. Information describing the configuration of a random access channel may include at least information indicating the initial random access preamble power value for the random access channel. Information describing the configuration of a random access channel may include at least information indicating the number of random access channels frequency-multiplexed in one time instance for the random access channel.

[0054] The random access procedure may also be a contention-based random access procedure. Contention-based random access is a procedure in which multiple random accesses are performed on a RACH occasion. It could also be a random access where one random access preamble is randomly selected from a set of random access preambles and then sent.

[0055] 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).

[0056] 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.

[0057] The wireless resource control layer processing unit 16 sets the active and inactive sections of the Cell DTX based on the parameters related to the Cell DTX received from the base station device 3. Based on the set active and inactive sections of the Cell DTX, the wireless resource control layer processing unit 16 controls the processing of the wireless transceiver unit 10.

[0058] The wireless resource control layer processing unit 16 receives SSB adaptation from the base station device 3. Based on parameters related to (periods of multiple SSB bursts), the wireless transceiver 10 controls the SSB reception process. The wireless transceiver 10 performs reception processing of SSB bursts of the controlled period during the active section of the Cell DTX. The wireless transceiver controls multiple SSB configurations (SSB It receives a signaling that indicates one of the burst's multiple periods.

[0059] 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.

[0060] The wireless resource control layer processing unit 16 may include function information generated based on the functions of the terminal device 1 in the RRC message and transmit it to the base station device 3.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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 amp 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.

[0066] 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.

[0067] The following describes an example of the configuration of a base station device 3 according to one aspect of this embodiment.

[0068] 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.

[0069] 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.

[0070] 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 multiple MAC SDUs (Service Data Units) into transport blocks, or decomposition of transport blocks delivered from the physical layer on UL-SCH 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.

[0071] 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.

[0072] 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 configuration information includes physical channels and physical signals (i.e., the 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).

[0073] 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.

[0074] 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.

[0075] 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.

[0076] The wireless resource control layer processing unit 36 ​​configures settings for multiple search areas. Each of these settings for multiple search areas is indexed.

[0077] 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).

[0078] The wireless resource control layer processing unit 36 ​​sets the RACH occasion. The 36th unit sets the RACH occasion for the random access channel. The control layer processing unit 36 ​​sets the period of the RACH occasion for the random access channel. do.

[0079] 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.

[0080] The wireless resource control layer processing unit 36 ​​sets parameters related to Cell DTX (such as the length of the Cell DTX active period and the period of the Cell DTX active period). Based on the set parameters related to Cell DTX, the wireless resource control layer processing unit 16 sets the active period and the inactive period of Cell DTX.

[0081] The wireless resource control layer processing unit 36 ​​sets parameters related to SSB adaptation (multiple candidate periods for multiple SSB bursts) (multiple SSB configurations). The control layer processing unit 36 ​​controls the configuration of the SSB to be used (SSB burst period). The wireless transceiver unit 30 performs SSB transmission processing. The wireless transceiver unit 30 operates during the active section of the Cell DTX. It then transmits SSB bursts with a controlled period.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] The wireless transceiver 30 may perform some or all of the modulation, coding, and transmission processes. The wireless transceiver 30 may generate a physical signal based on some or all of the coding, modulation, and baseband signal generation processes applied to the transport block. 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.

[0086] 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 refers to the number of PDCCH candidates configured in the search area of ​​the control resource set of terminal device 1. Identify the candidate numbers for PDCCH.

[0087] 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.

[0088] 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.

[0089] The transmitter unit of base station device 3 transmits SSB. The transmitter unit of base station device 3 transmits Cell DTX Dynamically transmits SSB in the active section. The transmitting unit of base station equipment 3 transmits in the active section of Cell DTX. During this time, SSB bursts are transmitted at a dynamically controlled period. The transmitting unit of base station device 3 is SSB is not transmitted during the inactive section of Cell DTX.

[0090] 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.

[0091] The receiving unit of base station device 3 receives RACH. The receiving unit of base station device 3 performs random access preamble detection processing.

[0092] 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.

[0093] 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.

[0094] 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. Alternatively, a Fast Fourier Transform (FFT) can be applied to the sband signal to extract the signal in the frequency domain.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] 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.

[0099] 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)

[0100] 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.

[0101] 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.

[0102] 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.

[0103] HARQ-ACK information may consist of HARQ-ACK bits corresponding to a single transport block (TB). HARQ-ACK bits may indicate either an ACK (acknowledgement) or a NACK (negative-acknowledgement) corresponding to the transport block. An ACK may indicate that the decoded transport block has been successfully completed. A NACK indicates that the decoded transport block has not been successfully completed. It may also indicate that it has not been decoded. The HARQ-ACK information may include one or more HARQ-ACK bits.

[0104] 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.

[0105] 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.

[0106] 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).

[0107] 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.

[0108] 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.

[0109] 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.

[0110] 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.

[0111] 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.

[0112] 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)

[0113] UL DMRS is a general term for DMRS for PUSCH and DMRS for PUCCH.

[0114] 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.

[0115] The propagation path of a pusher may be estimated from the DMRS for that pusher.

[0116] 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.

[0117] The propagation path of PUCCH may be estimated from the DMRS for the PUCCH.

[0118] The downlink physical channel may correspond to a set of resource elements that transmit information generated in the upper layer. The downlink physical channel may also be a physical channel used in the downlink component carrier. The wireless transceiver 30 may transmit the downlink physical channel. The wireless transceiver 10 receives the downlink physical channel. This may also be done. 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)

[0119] 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).

[0120] 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.

[0121] 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.

[0122] 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.

[0123] 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).

[0124] 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.

[0125] 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.

[0126] DCI format 2-9 may be used to activate or deactivate the Cell DTX / DRX configuration of one or more serving cells for one or more UEs. T2-9 may be transmitted with a CRC scrambled by NES-RNTI. DCI format Mat 2-9 consists of some or all of the following information: Block number • Cell DTX / DRX indication

[0127] 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.

[0128] 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.

[0129] 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.

[0130] 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)

[0131] The synchronization signal synchronizes the frequency domain and / or time domain of the downlink when terminal device 1 is used. It is used to obtain the synchronization signal, PSS (Primary Synchronization Signal), and This is a general term for Secondary Synchronization Signals (SSS).

[0132] An SS block (SS / PBCH block) (SSB) consists of at least some or all of the PSS, SSS, and PBCH. One SSB consists of four OFDM symbols. The SSB consists of 240 subcarriers. SSB is indexed within a half-frame. That is, multiple SSBs are composed within a half-frame. A half-frame in which an SSB is composed is called an SSB burst. The period of the half-frame in which an SSB is composed, i.e., the period of the SSB burst, is set by the base station equipment 3. The terminal device 1 is connected to the base station equipment 3. The SSB burst reception operation may be performed at the interval notified by device 3.

[0133] The antenna ports for PSS, SSS, PBCH, and DMRS for PBCH may be the same.

[0134] 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

[0135] DL DMRS is the sum of DMRS for PBCH, DMRS for PDSCH, and DMRS for PDCCH. It is a title.

[0136] 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.

[0137] 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.

[0138] 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.

[0139] 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.

[0140] BCH (Broadcast Channel), UL-SCH (Uplink-Shared Channel), and DL-SCH (Downlink-Shared Channel) are transport channels.

[0141] 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.

[0142] The transport layer uses HARQ (Hybrid Automatic Repeat) for the transport block. You may also apply t reQuest.

[0143] 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.

[0144] 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.

[0145] UL-SCH may be mapped to PUSCH. DL-SCH may be mapped to PDSCH. BCH It may be mapped to PBCH.

[0146] 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. The media access control layer processing unit 15 may decide to send a random access preamble on the RACH occasion used for the random access channel.

[0147] 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).

[0148] 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.

[0149] 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.

[0150] 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).

[0151] 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.

[0152] 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.

[0153] 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).

[0154] Each of the search area sets may be associated with at least one control resource set. Each of the search area sets may be contained within one control resource set. Each of the search area sets may be given an index of the control resource set associated with that search area set.

[0155] 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.

[0156] In various embodiments of this embodiment, unless otherwise specified, the number of resource blocks indicates the number of resource blocks in the frequency domain.

[0157] 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 multiplexed and transmitted 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).

[0158] 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.

[0159] 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.

[0160] HARQ control for a single transport block may be called a HARQ process. Each HARQ process may be assigned a unique HARQ process identifier. HARQ process in DCI format It includes a field that indicates the process identifier (HARQ process number).

[0161] For each HARQ process, an NDI (New Data Indicator) is shown in DCI format. 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 receives the NDI value for each HARQ process. The base station device 3 stores (remembers) the NDI value for each terminal device 1 for each HARQ process. The terminal device 1 stores (remembers) the detected DCI format NDI fee. 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 remains unchanged, into the NDI field in DCI format and sends it to the terminal device 1. I believe. 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.

[0162] 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.

[0163] 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.

[0164] 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.

[0165] 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.

[0166] 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

[0167] The radioResourceConfigCommon information element (RRC signaling) may include information indicating settings commonly used in a serving cell. These settings commonly used in a 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 resources of PRACH may be shown at a minimum.

[0168] 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.

[0169] Information indicating the RACH configuration may include information indicating the number of RACH occasions per SSB (ssb-perRACH-OccasionAndCB-PreamblesPerSSB). For example, there may be 8 RACH occasions, or 4 RACH occasions, or 2 RACH occasions, or 1 RACH occasion per SSB. For example, there may be 1 RACH occasion for every 2 SSBs. For example, there may be 1 RACH occasion for every 4 SSBs. For example, there may be 1 RACH occasion for every 8 SSBs. For example, there may be 1 RACH occasion for every 16 SSBs. The RACH configuration information (ssb-perRACH-OccasionAndCB-PreamblesPerSSB) may include information indicating the number of random access preambles (Contention Based preambles) per SSB. For example, 4, 8, 12, 16, or 24 per SSB. 1, or 28, 32, 36, 40, 44, 48, 52, 56, 60, or 64 random access preambles (Contention Based preambles) may be used.

[0170] The information indicating the RACH configuration may include information indicating the maximum number of retries for the random access preamble. More specifically, this is the maximum number of random access preamble transmissions before declaring a failure of the random access procedure. For example, it may be 3, 4, 5, 6, 7, 8, 10, 20, 50, 100, or 200 retries.

[0171] Information indicating the RACH setting (configuration) for a random access channel may include information indicating the RACH occasion, i.e., information indicating the period of the RACH occasion. Information indicating the RACH setting (configuration) for a random access channel may also include information indicating the maximum number of retransmissions of the random access preamble.

[0172] The information indicating the configuration of RACH for random access channels may independently include information indicating the number of random access preambles used for contention-based random access and contention-free random access. For example, the number of random access preambles used for contention-based random access and contention-free random access may be indicated as 1 to 63.

[0173] The information indicating the RACH configuration for a random access channel may independently include information indicating the length of the random access response window used to detect random access responses. For example, the length of the random access response window may be indicated by the number of slots, such as 1, 2, 4, 8, 10, 20, 40, or 80 slots. Either the quantity or the number may be indicated.

[0174] Information showing the configuration of RACH for random access channels, Information indicating the power ramping step may be included separately. For example, the power ramping step may be indicated as 0 dB, 2 dB, 4 dB, or 6 dB.

[0175] The information indicating the configuration of RACH for a random access channel may independently include information indicating the number of PRACH transmitters frequency multiplexed in a single time instance. For example, the number of PRACH transmitters frequency multiplexed in one time instance is 1. , 2, 4, or 8 may be shown.

[0176] Information indicating the RACH configuration for a random access channel may independently include information indicating the contention resolution timer value. 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.

[0177] The information indicating the RACH configuration for the random access channel may independently include information indicating the value of the initial random access preamble power (target power level on the network receiver side). For example, the initial random access preamble power value may be any value between -202 dB and -60 dB in 2 dB increments.

[0178] 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

[0179] 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.

[0180] 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 Higher-level messages that do not contain informational elements may be included in dedicated RRC signaling. Higher-level messages that are mapped to a DCCH logical channel and include at least a radioResourceConfigDedicated information element may be included in dedicated RRC signaling.

[0181] The first system information may include at least information related to RACH resources. The first system information may also include information indicating the configuration of Random access (RACH settings). System information 1 may include at least information related to the initial connection settings. System information 2 may be system information other than system information 1.

[0182] The radioResourceConfigDedicated information element may include at least information related to the RACH resource. The radioResourceConfigDedicated information element may also include at least information related to the initial connection configuration.

[0183] Information related to the reception of a PDCCH may include information related to an ID indicating the destination of the PDCCH. The ID indicating the destination of the PDCCH is used for scrambling the CRC bits attached to the PDCCH. It may also be an ID that can be used. The ID that indicates the destination of the PDCCH is also called RNTI (Radio Network Temporary Identifier). Information related to the reception of the PDCCH may include information related to the ID used for scrambling the CRC bits attached to the PDCCH. Terminal device 1 attempts to receive the PDCCH based at least on the information related to the ID contained in the PBCH. can.

[0184] 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.

[0185] 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.

[0186] To facilitate reducing the active time of downlink transmission by the base station device 3, the terminal device 1 configures a periodic Cell DTX pattern. The Cell DTX pattern consists of an active period and an inactive period. The configuration of the Cell DTX pattern may be common within a cell. The Cell DTX pattern may be configured and activated separately. If a Cell DTX is configured and activated in a cell, the terminal device 1 does not need to monitor the PDCCH or receive SPS during the inactive period.

[0187] Cell DTX is activated by RRC signaling or L1 group common signaling. However, it may be deactivated. Cell DTX has an active duration and a period. Characterized by (cycle). The active period is when terminal device 1 receives PDCCH or SPS. This is the period in which the network awaits action. The active period is unaffected for network energy saving purposes. The period identifies the cyclical repetition of the interval between the active period and the subsequent inactive period.

[0188] Base station device 3 transmits Cell DTX parameters to terminal device 1 via RRC signaling. Notify. The timer value that determines the length of one active duration. It is expressed by a parameter. For example, 1 / 32 milliseconds, 2 / 32 milliseconds, 3 / 32 milliseconds, 4 / 32 milliseconds, 5 / 32 milliseconds, 6 / 32 milliseconds, 7 / 32 milliseconds, 8 / 32 milliseconds, 9 / 32 milliseconds, 10 / 32 milliseconds, 11 / 32 milliseconds, 12 / 32 milliseconds, 13 / 32 milliseconds, 14 / 32 milliseconds, 15 / 32 milliseconds, 16 / 32 milliseconds, 17 / 32 milliseconds, 18 / 32 milliseconds, 19 / 32 milliseconds, 20 / 32 milliseconds, 21 / 32 milliseconds, 22 / 32 milliseconds, 23 / 32 milliseconds, 24 / 32 milliseconds, 25 / 32 milliseconds, 26 / 32 milliseconds, 27 / 32 milliseconds, 28 / 32 milliseconds, 29 / 32 milliseconds, 30 / 32 milliseconds, 31 / 32 milliseconds is the length of one active duration. The value of the timer to be specified may be notified. For example, 1 millisecond, 2 milliseconds, 3 milliseconds, 4 milliseconds, 5 milliseconds, 6 milliseconds, 8 milliseconds, 10 milliseconds, 20 milliseconds, 30 milliseconds, 40 milliseconds, 50 milliseconds. milliseconds, 60 milliseconds, 80 milliseconds, 100 milliseconds, 200 milliseconds, 300 milliseconds, 400 milliseconds, 500 milliseconds 600 milliseconds, 800 milliseconds, 1000 milliseconds, 1200 milliseconds, or 1600 milliseconds may be notified as the timer value that determines the length of a single active duration.

[0189] The period and start offset values ​​of the periodically repeating active period are indicated by parameters. The period is one of the following: 10 milliseconds, 20 milliseconds, 32 milliseconds, 40 milliseconds, 60 milliseconds, 64 milliseconds, 70 milliseconds, 80 milliseconds, 128 milliseconds, 160 milliseconds, 256 milliseconds, 320 milliseconds, 512 milliseconds, 640 milliseconds, 1024 milliseconds, 1280 milliseconds, 2048 milliseconds, 2560 milliseconds, 5120 milliseconds, or 10240 milliseconds. It may be notified as a value. The start offset is 1 millisecond from 1 millisecond to 10240 milliseconds. Any value in the units may be notified as the starting offset value. Additionally, any of the following may be notified as an additional starting offset value: 1 / 32 millisecond, 2 / 32 millisecond, 3 / 32 millisecond, 4 / 32 millisecond, 5 / 32 millisecond, 6 / 32 millisecond, 7 / 32 millisecond, 8 / 32 millisecond, 9 / 32 millisecond, 10 / 32 millisecond, 11 / 32 millisecond, 12 / 32 millisecond, 13 / 32 millisecond, 14 / 32 millisecond, 15 / 32 millisecond, 16 / 32 millisecond, 17 / 32 millisecond, 18 / 32 millisecond, 19 / 32 millisecond, 20 / 32 millisecond, 21 / 32 millisecond, 22 / 32 millisecond, 23 / 32 millisecond, 24 / 32 millisecond, 25 / 32 millisecond, 26 / 32 millisecond, 27 / 32 millisecond, 28 / 32 millisecond, 29 / 32 millisecond, 30 / 32 millisecond, or 31 / 32 millisecond.

[0190] Each cell may be configured with a periodic Cell DTX pattern by RRC. A cell consists of an active section and an inactive section. Cell DTX operation affects the monitoring operation of the downlink assignment configured with the PDCCH of terminal device 1. In a cell where Cell DTX is configured and activated, the MAC entity monitors the downlink assignment configured with the PDCCH using Cell DTX operation. RRC controls Cell DTX operation by configuring various parameters.

[0191] The activation and deactivation of Cell DTX may be controlled by signaling in the physical layer. The activation and deactivation of Cell DTX may also be controlled by signaling in the RRC layer.

[0192] The active period of Cell DTX includes the time while the related timer is running. Based on the parameters indicating the period and start offset, the start timing of the timer that identifies the active period is determined. If the Cell DTX operation is deactivated, or during the active period of Cell DTX, the terminal device 1 monitors the PDCCH. The terminal device 1 does not need to monitor the PDCCH and does not need to perform reception processing according to the configured downlink assignment if it is not in the Cell DTX active period (Cell DTX inactive period).

[0193] The L1 group common signaling indicating activation or deactivation is provided by DCI format 2-9. The bit positions of DCI format 2-9 and the information regarding the corresponding cell are notified from the base station device 3 to the terminal device 1 by RRC signaling. When the bit value indicates 0, it means that DCI format 2-9 indicates the deactivation of the Cell DTX operation for the corresponding cell. When the bit value indicates 1, it means that DCI format 2-9 indicates the activation of the Cell DTX operation for the corresponding cell.

[0194] The terminal device 1 does not need to receive CSI-RS during the inactive period.

[0195] The configuration of the SSB is dynamically controlled. The dynamic control of the SSB configuration is referred to as SSB adaptation. Multiple configurations of the SSB are set, and it is dynamically indicated which SSB configuration is used. Which SSB configuration is used is indicated from the base station device 3 to the terminal device 1. Which SSB configuration is used may be indicated by L1 signaling. Which SSB configuration is used may be indicated by DCI format. The configuration of the SSB may be dynamically controlled in the primary cell. The configuration of the SSB may be dynamically controlled in the secondary cell. ​​​Yes. L1 signaling indicating dynamic control of the SSB configuration of the secondary cell may be transmitted and received in the primary cell. Which SSB configuration is used may be indicated by MAC signaling (MAC CE). Which SSB configuration is used may be indicated by MAC signaling (MAC CE).

[0196] The SSB configuration may be the SSB period. The SSB period may be dynamically controlled. A plurality of SSB periods may be set, and which SSB period is used may be dynamically indicated. The SSB configuration may be the SSB burst period. An SSB burst is composed of a plurality of SSBs. The period of the SSB burst may be dynamically controlled. A plurality of SSB burst periods may be set, and which SSB burst period is used may be dynamically indicated.

[0197] Cell DTX operation and SSB adaptation are efficiently used in combination. SSB adaptation is applied in the active section of Cell DTX. The period of the SSB burst in the active section of Cell DTX is dynamically controlled. In the non-active section of Cell DTX, SSBs may not be transmitted and received. SSB adaptation is applied in the active section of Cell DTX. The period of the SSB burst in the active section of Cell DTX is dynamically controlled. In the non-active section of Cell DTX, SSBs may not be transmitted and received. In the non-active section of Cell DTX, SSBs may not be transmitted and received.

[0198] Cell DTX operation is applied in the secondary cell. Cell DTX parameters are configured for the secondary cell, and the active section and the non-active section are repeatedly set. Signaling (L1 signaling or MAC signaling) for dynamically controlling the period of the SSB burst of the secondary cell is transmitted and received in the primary cell. By this signaling, the period of the SSB burst transmitted and received in the active section of Cell DTX of the secondary cell Signaling (L1 signaling or MAC signaling) for dynamically controlling the period of the SSB burst of the secondary cell is transmitted and received in the primary cell. By this signaling, the period of the SSB burst transmitted and received in the active section of Cell DTX of the secondary cell By this signaling, the period of the SSB burst transmitted and received in the active section of Cell DTX of the secondary cell The period is controlled. SSB burst periods can be configured as, for example, 5 milliseconds, 10 milliseconds, 20 milliseconds, 40 milliseconds, 80 milliseconds, and 160 milliseconds. For example, two SSB burst periods, a 5-millisecond period and a 160-millisecond period, are set as candidates for SSB burst periods that are dynamically controlled by SSB adaptation, and the SSB burst is set in the active interval of Cell DTX. The signaling indicates which period is used for the strike.

[0199] Figure 5 shows an example of dynamic control of the SSB burst period for the active interval of Cell DTX. This is a diagram. Here, Cell DTX operation is applied to the secondary cell, and signaling indicating the period of the SSB burst for the active interval of Cell DTX is applied to the primary cell. This section describes the case where transmission and reception occur in a cell. A first-period SSB burst is formed for a Cell DTX active interval (first Cell DTX active interval) that contains a secondary cell. In the diagram, one cluster represents one SSB burst, and one SSB burst consists of one or more SSBs. Base station device 3 is in the first Cell DTX active section. Transmits an SSB burst of one period. Terminal device 1 transmits an SSB burst of one period during the first Cell DTX active interval. Then, the first period's SSB burst is received.

[0200] In the Cell DTX inactive phase following the first Cell DTX active phase, the SSB burst is constructed. It is not accomplished. Base station device 3 transmits an SSB burst during the Cell DTX inactive section. No. Terminal device 1 does not receive SSB bursts during the Cell DTX inactive section.

[0201] During the time corresponding to the Cell DTX inactive interval of the secondary cell, signaling indicating the SSB burst period is transmitted and received in the primary cell. This signaling is, for example, an L1 signaling. This signaling is, for example, a MAC signaling. This signaling is for dynamically controlling the SSB burst period. Base station equipment 3 The signaling device transmits the signaling. Terminal device 1 receives the signaling.

[0202] A second-period SSB burst is formed for the Cell DTX active period (second Cell DTX active period) that follows the Cell DTX inactive period. Base station device 3 transmits the second-period SSB burst during the second Cell DTX active period. Terminal device 1 receives the second-period SSB burst during the second Cell DTX active period.

[0203] Figure 6 shows an example of the process for determining the SSB burst period set for the active section of the Cell DTX according to one aspect of this embodiment. Terminal device 1 determines the Cell DTX parameters The data and the periods of multiple dynamically controlled SSB bursts are set. Here, the terminal equipment Device 1 has been initialized with the SSB burst period. Terminal device 1 determines whether or not it has received a signaling indicating the SSB burst period (step S201). If terminal device 1 determines that it has received a signaling indicating the SSB burst period (step S201: YES), it assumes an SSB burst with the period indicated by the signaling indicating the SSB burst period in the active section of Cell DTX (step S202). Terminal device 1 then determines the SSB burst period If it is determined that the signaling indicated was not received (step S201: NO), an SSB burst of the set period is assumed in the active interval of the Cell DTX (step S203). Therefore, terminal device 1 will continue without changing the previously set SSB burst period. The terminal device 1 performs SSB reception operation based on the assumed SSB burst period. Performs the receiving operation.

[0204] As described above, in the embodiment of the present invention, information indicating multiple SSB configurations is received, The Cell DTX is applied to an area where a signaling indicating one of the following configurations is received, and an SSB of the configuration indicated by the signaling is received during the active interval of the Cell DTX. This makes it possible to efficiently adapt SSB at the border.

[0205] The program that operates in the base station device 3 and terminal device 1 according to the embodiment of the present invention is a program that controls the CPU (Central Processing Unit) and the like (a program that makes the computer function) in order to realize the functions of the above embodiment according to the embodiment of the present invention. It is also possible. The information handled by these devices is temporarily stored in RAM (Random Access Memory) during processing, and then stored in Flash ROM (Read Only Memory). It is stored in various ROMs and HDDs (Hard Disk Drives), and the CPU processes it as needed. Reading, modification, and writing are performed.

[0206] 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.

[0207] Here, the "computer system" referred to herein is a computer system built into the terminal device 1 or the base station device 3, and includes hardware such as an OS and peripheral devices. Further, the "computer-readable recording medium" refers to a portable medium such as a flexible disk, a magneto-optical disk, a ROM, a CD-ROM, etc., and a storage device such as a hard disk built into a computer system.

[0208] Furthermore, the "computer-readable recording medium" may also include those that hold a program dynamically for a short time, such as a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line, and those that hold a program for a certain period of time, such as a volatile memory inside a computer system that serves as a server or a client in that case. Also, the above program may be for realizing a part of the functions described above, and may further be for realizing the functions described above in combination with a program already recorded in the computer system.

[0209] The terminal device 1 may be composed of at least one processor and at least one memory including computer program instructions (computer program). The memory and the computer program instructions (computer program) may be configured to cause the terminal device 1 to perform the operations and processes described in the above embodiment using the processor. The base station device 3 may be composed of at least one processor and at least one memory including computer program instructions (computer program). The memory and the computer program instructions (computer program) may be configured to cause the base station device 3 to perform the operations and processes described in the above embodiment using the processor.

[0210] 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.

[0211] 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.

[0212] 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 some or all of them 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. In addition, if advances in semiconductor technology lead to the emergence of integrated circuit implementation technologies that can replace LSIs, it is possible to use integrated circuits based on those technologies.

[0213] 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.

[0214] 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]

[0215] 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 memory for storing computer program code, which receives information indicating multiple configurations of an SSB, and any of the configurations of the multiple configurations A terminal device that receives a signaling indicating the above, and receives an SSB with the configuration indicated by the signaling during the active section of the Cell DTX.

2. The terminal device according to claim 1, wherein the primary cell receives the signaling and the secondary cell receives an SSB with the configuration indicated by the signaling.

3. The terminal device according to claim 1, wherein the configuration includes at least the period of the SSB burst.

4. The terminal device according to claim 1, which does not receive SSB during the inactive section of Cell DTX.

5. A communication method used in terminal equipment, which receives information indicating multiple SSB configurations. Steps include receiving a signaling indicating one of the above-mentioned multiple configurations, and Cell During the active section of the DTX, a step receives an SSB with the configuration indicated by the signaling. A communication method that includes a plug.

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