Terminal

Abstract

To provide a technique for a terminal in a connection mode to control communication by using a simple radio system.SOLUTION: A terminal comprising: a passive receiver that receives a command and operates with power obtained from a carrier wave transmitted from a transmission source; and a control unit that switches an operation in a connection mode from a first operation to a second operation when the receiver receives the command.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a terminal and a base station in a wireless communication system. [Background technology]

[0002] The 3GPP (3rd Generation Partnership Project) is currently studying a wireless communication system called 5G or NR (New Radio) (hereinafter, this wireless communication system will be referred to as "NR") in order to achieve even larger system capacity, even faster data transmission speeds, and even lower latency in wireless sections. In order to meet the requirements of 5G, which require a throughput of 10 Gbps or more while keeping wireless section latency to 1 ms or less, various wireless technologies and network architectures are being studied (e.g., Non-Patent Documents 1 and 2). Furthermore, studies on 6G, the next generation wireless communication system after 5G, have also begun.

[0003] In NR, as in LTE, paging is performed to call a terminal in standby mode when a call is received. In NR, a terminal in RRC_IDLE or RRC_INACTIVE state performs discontinuous reception operation for power saving in order to monitor paging DCI. In discontinuous reception operation, the period during which a terminal wakes up from a sleep state and performs paging monitoring is called a PO (paging occasion).

[0004] Furthermore, discontinuous reception operation for power saving is also performed in a terminal in the RRC_CONNECTED state. The discontinuous reception operation in the RRC_CONNECTED state is called CDRX. The RRC_CONNECTED state may also be called connected mode. [Prior art documents] [Non-patent literature]

[0005] [Non-Patent Document 1] 3GPP TS 38.214 V16.4.0 (2020-12) [Non-patent document 2] 3GPP TS 38.331 V16.3.1 (2021-01) Summary of the Invention [Problem to be solved by the invention]

[0006] In future NR or 6G, etc., it is being considered to notify the terminal of the presence or absence of paging using a simple wireless system (e.g., a passive receiver) separate from the signals used to actually send and receive data between the terminal and base station, etc.

[0007] This means that devices in Idle / Inactive mode can be woken up by PO only when there is paging, so there is no need to wake them up when there is no paging, which is expected to result in a significant reduction in power consumption.

[0008] Control using passive receivers is considered to be beneficial even in connected mode from the viewpoint of power saving, etc. However, in the prior art, passive receivers are assumed to be used only to determine the presence or absence of paging, and no communication control technology using passive receivers for connected mode has been proposed.

[0009] The present invention has been made in view of the above points, and has an object to provide a technique for a terminal in connection mode to control communications using a simple wireless system. [Means for solving the problem]

[0010] According to the disclosed technology, a receiver for receiving a command is a passive receiver that operates using power obtained from a carrier wave transmitted from a transmission source; a control unit that switches an operation in a connection mode from a first operation to a second operation when the receiver receives a command; A terminal comprising: [Effects of the Invention]

[0011] The disclosed technology provides a technology for a terminal in a connected mode to control communications using a simple wireless system. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a diagram illustrating a wireless communication system according to an embodiment of the present invention. [Figure 2] 1 is a diagram illustrating a wireless communication system according to an embodiment of the present invention. [Figure 3] FIG. 10 is a sequence diagram showing an example of a basic operation. [Figure 4] FIG. 1 is a diagram for explaining Example 0. [Figure 5] FIG. 1 is a diagram for explaining Example 1-1. [Figure 6] FIG. 10 is a diagram for explaining Example 1-2. [Figure 7] FIG. 10 is a diagram for explaining Examples 1-3. [Figure 8] FIG. 10 is a diagram for explaining Example 1-4. [Figure 9] FIG. 10 is a diagram for explaining a second embodiment. [Figure 10] FIG. 10 is a diagram for explaining a third embodiment. [Figure 11] FIG. 10 is a diagram for explaining Example 4-1. [Figure 12] FIG. 10 is a diagram for explaining Example 4-1. [Figure 13] FIG. 10 is a diagram for explaining Example 4-2. [Figure 14] FIG. 10 is a diagram for explaining Example 4-2. [Figure 15] FIG. 10 is a diagram for explaining a fifth embodiment. [Figure 16]FIG. 10 is a diagram for explaining Example 6-1. [Figure 17] FIG. 10 is a diagram for explaining Example 6-1. [Figure 18] FIG. 10 is a diagram for explaining Example 6-1. [Figure 19] FIG. 10 is a diagram for explaining Example 6-2. [Figure 20] FIG. 10 is a diagram for explaining Example 6-2. [Figure 21] FIG. 10 is a diagram for explaining Example 6-2. [Figure 22] 2 is a diagram illustrating an example of a functional configuration of a base station 10 according to an embodiment of the present invention. [Figure 23] FIG. 2 is a diagram illustrating an example of a functional configuration of a terminal 20 according to the embodiment of the present invention. [Figure 24] FIG. 2 is a diagram illustrating an example of a functional configuration of a terminal 20 according to the embodiment of the present invention. [Figure 25] 2 is a diagram illustrating an example of a hardware configuration of a base station 10 or a terminal 20 according to an embodiment of the present invention. [Figure 26] FIG. 1 is a diagram illustrating a configuration of a vehicle. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that the embodiment described below is an example, and the embodiment to which the present invention is applied is not limited to the following embodiment.

[0014] The wireless communication system of the embodiment of the present invention is assumed to be an NR or 6G system, but the technology according to the present invention is not limited to NR or 6G and can also be applied to other systems.

[0015] Furthermore, although this specification uses terms used in existing NR or LTE specifications, such as PDCCH, PDSCH, PUSCH, RRC, MAC, and DCI, the channel names, protocol names, signal names, function names, and the like used in this specification may be called by other names. Note that PDCCH is an example of a control channel, PDSCH resources are an example of resources for data reception, and PUSCH resources are an example of resources for data transmission.

[0016] Furthermore, although the terminal operation in this embodiment is assumed to be the operation of a terminal in connected mode, this is merely an example, and the technology according to the present invention may also be applied to a terminal in idle / inactive mode.

[0017] As mentioned above, control using passive receivers, which are being considered for use in idle / inactive mode, is also considered to be beneficial in connected mode from the perspective of power saving, etc. However, in conventional technology, passive receivers are assumed to be used only to determine the presence or absence of paging, and no communication control technology for connected mode using passive receivers has been proposed. Below, we will explain a technology that allows a terminal in connected mode to control communication using a simple wireless system.

[0018] (System Configuration) Fig. 1 is a diagram illustrating a wireless communication system according to an embodiment of the present invention. As shown in Fig. 1, the wireless communication system according to the embodiment of the present invention includes a base station 10 and a terminal 20. Although Fig. 1 shows one base station 10 and one terminal 20, this is an example, and there may be a plurality of each.

[0019] The base station 10 is a communication device that provides one or more cells and performs wireless communication with the terminal 20. The physical resources of a wireless signal are defined in the time domain and the frequency domain, and the time domain may be defined by the number of OFDM symbols, and the frequency domain may be defined by the number of subcarriers or the number of resource blocks. Furthermore, a TTI (Transmission Time Interval) in the time domain may be a slot, or a TTI may be a subframe.

[0020] The base station 10 transmits a synchronization signal, system information, and the like to the terminal 20. The synchronization signal is, for example, NR-PSS and NR-SSS. The synchronization signal may also be SSB. The system information is transmitted, for example, on the NR-PBCH or PDSCH, and is also called broadcast information. As shown in FIG. 1 , the base station 10 transmits control signals or data to the terminal 20 on the DL (Downlink) and receives control signals or data from the terminal 20 on the UL (Uplink). Note that, here, what is transmitted on a control channel such as PUCCH or PDCCH is called a control signal, and what is transmitted on a shared channel such as PUSCH or PDSCH is called data, but these names are merely examples.

[0021] The terminal 20 is a communication device equipped with a wireless communication function, such as a smartphone, a mobile phone, a tablet, a wearable terminal, or an M2M (Machine-to-Machine) communication module. As shown in Fig. 1, the terminal 20 receives control signals or data from the base station 10 via DL and transmits control signals or data to the base station 10 via UL, thereby utilizing various communication services provided by the wireless communication system. The terminal 20 may be referred to as a UE, and the base station 10 may be referred to as a gNB.

[0022] Fig. 2 shows an example of the configuration of a wireless communication system when DC (Dual connectivity) is implemented. As shown in Fig. 2, a base station 10A serving as an MN (Master Node) and a base station 10B serving as an SN (Secondary Node) are provided. The base station 10A and the base station 10B are each connected to a core network. The terminal 20 can communicate with both the base station 10A and the base station 10B.

[0023] A cell group provided by the base station 10A, which is an MN, is called an MCG (Master Cell Group), and a cell group provided by the base station 10B, which is an SN, is called an SCG (Secondary Cell Group).

[0024] The processing operations in this embodiment may be executed in the system configuration shown in FIG. 1, in the system configuration shown in FIG. 2, or in any other system configuration.

[0025] (Outline of the embodiment) In this embodiment, a simple wireless system / signal is used to support terminal operation in connected mode. Note that in this specification, "A / B" means "A or B, or A and B."

[0026] In this embodiment, the terminal 20 includes a receiver for receiving commands in a simple wireless system, separate from a normal receiving unit. Hereinafter, unless otherwise specified, the "receiver" refers to the receiver for receiving the command. The "normal receiving unit" refers to the receiving unit for receiving control information and data, as described with reference to FIG. 1. When the terminal 20 receives a command, the terminal 20 receives the command via the receiver, and for example, a control unit of the terminal 20 recognizes that the command has been received via the receiver and executes the control described in each embodiment.

[0027] In this embodiment, the receiver for receiving commands is a passive receiver. A passive receiver operates by obtaining power from a carrier wave transmitted from a source (for example, base station 10). Therefore, there is no need to perform a monitoring operation such as monitoring a PDCCH.

[0028] The command does not need to be information such as a bit string, but may be a signal that can determine whether it has been received by the receiver of the terminal 20. However, the command may include information in the form of a bit string (even 1 bit).

[0029] In this embodiment, it is assumed that a command is transmitted from base station 10 and received by terminal 20. However, this is just an example. For example, a command transmitted from base station 10 may be received by a certain terminal (relay terminal), and the command may be transmitted from the relay terminal to terminal 20.

[0030] In this embodiment, the following proposals 1 to 3 are made from a high-level perspective. Each high-level proposal corresponds to an example as shown below. In the following operations, unless otherwise specified, it is assumed that the terminal 20 is in connected mode.

[0031] <Proposal 1 (Examples 1 to 4)> In Proposal 1, when terminal 20 receives a command, it switches the operation in connected mode (including parameter switching). Examples of operations that may be switched include handover, CSI / RRM measurement, beam switching, SgNB change, PDCCH monitoring, and paging.

[0032] For example, as will be described in an embodiment later, when the terminal 20 receives a command, it switches parameters of functions related to PDCCH monitoring. Operation is also changed in accordance with the parameter switching.

[0033] <Proposal 2 (Example 5)> In Proposal 2, before receiving the PDCCH, terminal 20 determines whether to perform PDCCH monitoring depending on whether a command has been received.

[0034] <Proposal 3 (Example 6)> In Proposal 3, when terminal 20 receives a command, it receives data on a PDSCH resource dedicated to the operation according to this embodiment. Furthermore, when terminal 20 receives a command, it may transmit data on a PUSCH resource dedicated to the operation according to this embodiment.

[0035] <Common items for proposals 1 to 3> A terminal 20 that does not receive a command may perform a conventional terminal operation as defined, or, if a terminal 20 receives a command, may report to the base station 10 that the command has been received.

[0036] Furthermore, the terminal 20 may start a timer when it receives a command, and when the timer expires, switch the operation that is running on the timer to another operation (for example, the operation before the timer was started).

[0037] (Basic operation example) An example of basic operation in this embodiment will be described with reference to Fig. 3. In S101, terminal 20 transmits capability information of terminal 20 to base station 10. For example, based on the capability information, base station 10 determines that terminal 20 has a receiver for receiving commands, and transmits a command in S102.

[0038] In S103, the terminal 20 that has received the command switches the operation related to PDCCH monitoring, for example. In S104, the terminal 20 reports to the base station 10 that the operation has been switched in response to the command reception, for example.

[0039] Below, examples 0 to 6 will be explained. Example 0 is an example common to examples 1 to 6. Furthermore, the matters explained in examples 0 to 6 can be implemented in any combination.

[0040] (Example 0) First, an embodiment 0 will be described. In the embodiment 0, the receiver installation status in the terminal 20, and the functions of the terminal 20 or the receiver are notified to the base station 10. For example, UE Capability, UE category, or UE type relating to the receiver installation status and functions may be defined and notified to the base station 10.

[0041] For example, the terminal 20 may notify the base station 10 of one or more pieces of information from the following (1) to (8).

[0042] (1) Whether or not a receiver is installed (2) Number of receivers installed (3) Sensitivity / coverage of the receiver installed (4) Power consumption of the built-in receiver (5) Remaining power of terminal 20 (6) Mobility of terminal 20 (7) Beam selected by terminal 20 (8) Location information of terminal 20 4, the above content may be packaged, and the index of the combination supported by the terminal 20 may be notified to the base station 10. For example, a terminal 20 not equipped with a receiver may notify index=0.

[0043] The index may be a parameter that configures the UE capability, the UE category, or the UE type.

[0044] (Common features of Examples 1 to 6) Below, Examples 1 to 6 will be explained, but first, matters common to Examples 1 to 6 will be explained here. Here, Examples 1 to 6 will be referred to as the "proposed method" or "proposed operation."

[0045] The terminal 20 may determine whether to perform the proposed method or the conventional operation based on, for example, any one or more of the following reference information, and may report the result of the determination to the base station 10.

[0046] Location information of device 20 Terminal 20 remaining power Reception environment of terminal 20 (RSRP, RSRQ, etc.) Information explained in Example 0 (presence or absence of receivers, their number, performance, UE type, mobility, etc.) The terminal 20, for example, compares the reference information with a threshold value and determines whether to perform the proposed method or the conventional operation. For example, the terminal 20 may perform the operation of the proposed method if the remaining power is equal to or less than a threshold value.

[0047] The above threshold may be notified or changed by the base station 10 to the terminal 20, or may be set in advance in the base station 10 and the terminal 20. The method of notification from the base station 10 to the terminal 20 may be any of SIB, DCI, MAC CE, and RRC Signaling.

[0048] Furthermore, the base station 10 may decide whether to perform the proposed method or the conventional operation, and notify the terminal 20 of this.

[0049] Furthermore, the base station 10 may determine whether to perform the proposed method or the conventional operation based on information notified from the terminal 20 to the base station 10 (such as the information described in the zeroth embodiment, the Measurement Report, etc.), and notify the terminal 20 of the determination result. The method of notification from the base station 10 to the terminal 20 may be any of SIB, DCI, MAC CE, and RRC Signaling.

[0050] Example 1 will be described below. Example 1 consists of Examples 1-1 to 1-4, and each will be described below. In each of the drawings for explaining Examples 1-1 to 1-4, (a) conventional operation is shown on the top, and (b) proposed operation, which is the operation of the corresponding example, is shown on the bottom. Note that in this embodiment, there are cases where terminal 20 or base station 10 decides to perform conventional operation, and therefore there are cases where terminal 20 performs conventional operation in this embodiment.

[0051] (Example 1-1) In the embodiment 1-1, when the receiver of the terminal 20 receives a command, it transitions to CDRX (discontinuous reception state in connected mode).

[0052] An example of the operation of terminal 20 in Example 1-1 will be described with reference to Fig. 5. First, the conventional operation of Fig. 5(a) will be described. Terminal 20 attempts to receive a PDCCH during a period in the Non-DRX state, and when it receives a PDCCH, it starts a DRX Inactivity Timer. If the DRX Inactivity Timer expires without receiving a PDCCH while the DRX Inactivity Timer is running, terminal 20 enters the DRX state. The conventional operation is the same in Examples 1-2 to 1-4.

[0053] Next, a proposed operation example of the terminal 20 in Example 1-1 will be described with reference to Fig. 5(b). The terminal 20 attempts to receive the PDCCH during a period in the non-DRX state. When the terminal 20 receives a command during a period in the non-DRX state, the terminal 20 transitions to the DRX state. When the terminal 20 receives a command during a DRX period, the terminal 20 transitions to the non-DRX state. Note that the terminal 20 uses a receiver to receive commands, and therefore can receive commands even during a sleep period that is not a wake-up period in the DRX state.

[0054] (Example 1-2) Next, Example 1-2 will be described. In Example 1-2, when terminal 20 receives a command in the Non-DRX state, it switches PDCCH monitoring between ON and OFF.

[0055] A proposed operation example of terminal 20 in Example 1-2 will be described with reference to Fig. 6(b). In terminal 20, the Non-DRX state continues due to PDCCH reception. In this state, when terminal 20 receives a command, it turns PDCCH monitoring OFF. When terminal 20 receives a command while PDCCH monitoring is OFF, it turns PDCCH monitoring ON.

[0056] (Examples 1-3) Next, an example 1-3 will be described. In the example 1-3, when the terminal 20 receives a command in the DRX state, the PDCCH monitoring is switched between ON and OFF.

[0057] A proposed operation example of terminal 20 in Examples 1-3 will be described with reference to Fig. 7(b). Terminal 20 does not receive a PDCCH and continues to be in the DRX state. In the DRX state, PDCCH monitoring is basically performed periodically. In this state, when terminal 20 receives a command, it turns PDCCH monitoring OFF. When terminal 20 receives a command while PDCCH monitoring is OFF, it turns PDCCH monitoring ON.

[0058] (Examples 1-4) Next, an embodiment 1-3 will be described. In the embodiment 1-3, when the terminal 20 receives a command, the terminal 20 transitions to the idle mode or the inactive mode.

[0059] An example of the proposed operation of the terminal 20 in Examples 1-4 will be described with reference to Fig. 8(b). When the terminal 20 receives a command while in the Non-DRX state due to PDCCH reception, it enters the Idle / Inactive state and does not perform PDCCH monitoring.

[0060] Note that when terminal 20 receives a command while in the DRX state, it may enter the Idle / Inactive state and not perform PDCCH monitoring.

[0061] According to the embodiment 1 described using the embodiments 1-1 to 1-4, a terminal in the connected mode can perform control related to CDRX using a simple wireless system.

[0062] Example 2 In the second embodiment, the base station 10 can transmit a WUS (Wake Up Signal) to the terminal 20, and the terminal 20 can receive the WUS. The WUS is a signal that notifies the terminal 20 whether or not it needs to wake up during a PDCCH monitoring period (called on-duration) that arrives intermittently. The PDCCH monitoring period is, for example, the on-duration period in CDRX.

[0063] In the second embodiment, the terminal 20 in CDRX determines whether to wake up on-duration depending on whether a command is received, instead of monitoring the WUS.

[0064] A second embodiment will be described with reference to Fig. 9. Fig. 9 shows a case where terminal 20 is in the DRX state. As shown on the left side of Fig. 9, when terminal 20 receives a command, it wakes up and performs PDCCH monitoring, for example, during the on-duration immediately thereafter. As shown on the right side of Fig. 9, when terminal 20 does not receive a command, it does not wake up during the on-duration and does not perform PDCCH monitoring.

[0065] The above combination may be reversed. That is, when terminal 20 receives a command, it may not perform PDCCH monitoring for the on-duration immediately thereafter. Furthermore, if terminal 20 does not receive a command before the on-duration, it may perform PDCCH monitoring for that on-duration.

[0066] During the on-duration, if the terminal 20 receives a command while awake, it may transition to sleep, and if the terminal 20 receives a command while not awake, it may wake up.

[0067] When WUS is set in the terminal 20, the priority of the proposed method (Wake-Up instruction by command) and the conventional operation (Wake-Up instruction by WUS) may be notified to or changed from the base station 10 to the terminal 20.

[0068] The notification method from the base station 10 to the terminal 20 may be any of SIB, DCI, MAC CE, and RRC Signaling.

[0069] As a variation, when a WUS is configured in the terminal 20, the terminal 20 may decide whether to implement the proposed method (Wake-Up instruction by command) or the conventional operation (Wake-Up instruction by WUS), and notify the base station 10 of the decision result.

[0070] According to the first embodiment, a terminal in a connected mode can control PDCCH monitoring using a simple wireless system.

[0071] Example 3 Next, a third embodiment will be described. In the third embodiment, a switching instruction for Search Space Set Group Switching is implemented using a command. Examples 1 to 3 below will be described as specific examples. Note that the "Search Space Set Group" in the third embodiment may be replaced with a search space set or a search space. Also, the "command" in the third embodiment may be replaced with a "DCI." In other words, the control in the third embodiment can be implemented using either a command or a DCI.

[0072] <Example 3: Example 1> In Example 1, the base station 10 issues a command to the terminal 20 to instruct switching, and the terminal 20 determines whether to switch based on whether or not the command has been received.

[0073] For example, assume that Search Space Set Group1 and Search Space Set Group2 are set in terminal 20. When terminal 20 receives a command while using Search Space Set Group1 as the Search Space Set Group, it switches the Search Space Set Group from Search Space Set Group1 to Search Space Set Group2. Also, when terminal 20 receives a command while using Search Space Set Group2 as the Search Space Set Group, it switches the Search Space Set Group from Search Space Set Group2 to Search Space Set Group1.

[0074] <Example 3: Example 2> In Example 2, the base station 10 indicates the destination Search Space Set Group to the terminal 20 by the number of commands. The terminal 20 determines the destination Search Space Set Group according to the number (number of times) of commands received. Note that the number of commands received by the terminal 20 may be, for example, the number of commands received consecutively within a certain period. The same applies to the other embodiments regarding the number of commands.

[0075] For example, when terminal 20 receives the command once, it transitions to Search Space Set Group #0, when it receives the command twice it transitions to Search Space Set Group #1, and when it receives the command three times it transitions to Search Space Set Group #2.

[0076] <Example 3: Example 3> Search Space Set Group switching using a timer and a command may be combined. An example of the operation of terminal 20 when a timer and a command are combined will be described with reference to Fig. 10. When terminal 20 receives a command equivalent to periodic switching while performing PDCCH monitoring in Search Space Set Group #0, which has a high monitoring frequency, it switches the Search Space Set Group from Search Space Set Group #0 to Search Space Set Group #1, which has a low monitoring frequency.

[0077] The terminal 20 starts a timer when the first command is received, and when the timer expires, switches the Search Space Set Group from Search Space Set Group #1 to Search Space Set Group #0.

[0078] According to the third embodiment, a terminal in a connected mode can control a search space using a simple wireless system.

[0079] Next, a fourth embodiment will be described. The fourth embodiment is divided into two parts, 4-1 and 4-2, and each of these will be described. Note that the "command" in the fourth embodiment may be replaced with "DCI." In other words, the control in the fourth embodiment can be performed by either a command or a DCI.

[0080] Example 4-1 Next, Example 4-1 will be described. In Example 4-1, PDCCH skipping is performed using a command. As specific examples, Examples 1 to 4 below will be described.

[0081] <Example 4-1: Example 1> In Example 1, base station 10 issues a command to terminal 20 to instruct terminal 20 to skip PDCCH monitoring, and upon receiving the command, terminal 20 skips PDCCH monitoring for a predetermined number of slots / OFDM symbols. An example is shown in Figure 11. In the example of Figure 11, terminal 20 is performing PDCCH monitoring in, for example, a certain search space. In this state, upon receiving a command, terminal 20 skips PDCCH monitoring for, for example, a predetermined period.

[0082] <Example 4-1: Example 2> In Example 2, the base station 10 instructs the terminal 20 to skip PDCCH according to the number of commands, and the terminal 20 performs PDCCH skipping according to the number of commands received.

[0083] The "number of slots / OFDM symbols for skipping PDCCH monitoring" corresponding to the number of times the command is received may be packaged as shown in FIG. 12 and set in the base station 10 and the terminal 20 in advance.

[0084] <Example 4-1: Example 3> In Example 3, when the terminal 20 receives a command while skipping the PDCCH, the terminal 20 stops skipping the PDCCH and resumes on-duration PDCCH monitoring.

[0085] <Example 4-1: Example 4> A PDCCH skipping instruction using a timer and a command may be combined. For example, when terminal 20 receives a command while performing PDCCH monitoring, it transitions to the PDCCH skipping state. Terminal 20 starts a timer upon receiving the command, and when the timer expires, it transitions from the PDCCH skipping state to the PDCCH monitoring state.

[0086] According to Example 4-1, a terminal in connected mode can control the skip operation of PDCCH monitoring using a simple wireless system.

[0087] (Example 4-2) Next, Example 4-2 will be described. In Example 4-2, BWP Switching is performed using a command. As specific examples, Examples 1 to 3 below will be described. Note that the BWP here may be an uplink BWP, a downlink BWP, or both an uplink BWP and a downlink BWP.

[0088] <Example 4-2: Example 1> In Example 1, the base station 10 issues a command to the terminal 20 to instruct it to switch the BWP, and upon receiving the command, the terminal 20 switches to a predetermined BWP.

[0089] An example is shown in Fig. 13. In the example of Fig. 13, when the terminal 20 receives a command while using BWP#0, it switches the BWP from BWP#0 to BWP#1. When it receives a command in this state, it switches the BWP from BWP#1 to BWP#0.

[0090] The BWP#xx of the switching destination may be set in advance in the base station 10 and the terminal 20, or may be notified or changed from the base station 10 to the terminal 20. The method of notification from the base station 10 to the terminal 20 may be any of SIB, DCI, MAC CE, and RRC Signaling.

[0091] <Example 4-2: Example 2> In Example 2, the base station 10 instructs the terminal 20 to select a BWP as a destination for switching by the number of commands, and the terminal 20 determines the BWP as a destination for switching according to the number of commands received, and performs switching.

[0092] The "switching destination BWP" corresponding to the number of command receptions may be packaged as shown in FIG. 14 and set in the base station 10 and the terminal 20 in advance.

[0093] <Example 4-2: Example 3> A BWP switching instruction using a timer and a command may be combined. For example, when the terminal 20 receives a command while using BWP#0, it switches to BWP#1. When the terminal 20 receives the command, it starts a timer, and when the timer expires, it switches the BWP from BWP#1 to BWP#0.

[0094] According to the embodiment 4-2, a terminal in the connected mode can control the switching operation of the BWP using a simple wireless system.

[0095] Example 5 Next, a fifth embodiment will be described. The terminal 20 determines whether to perform PDCCH monitoring at a PDCCH monitoring opportunity for a certain search space, depending on whether a command has been received before the opportunity. From the viewpoint of the base station 10, for example, the base station 10 transmits a command when transmitting a PDCCH to the terminal 20 at a PDCCH monitoring opportunity for a certain search space, and does not transmit a command when not transmitting a PDCCH to the terminal 20 at the PDCCH monitoring opportunity.

[0096] A fifth embodiment will be described with reference to Fig. 15. Here, it is assumed that a certain search space is set in the terminal 20, and that PDCCH monitoring is performed in that search space.

[0097] In the case shown on the left side of Fig. 15, when terminal 20 receives a command at a timing before the search space, it monitors the PDCCH at the timing of the first search space that arrives thereafter. In the example shown on the right side of Fig. 15, terminal 20 does not receive a command at a timing before the search space, and therefore does not monitor the PDCCH in the first search space that arrives thereafter.

[0098] Furthermore, terminal 20 may perform PDCCH monitoring when not receiving a command, and may not perform PDCCH monitoring when receiving a command. From the viewpoint of base station 10, for example, base station 10 does not transmit a command when transmitting a PDCCH to terminal 20 during a PDCCH monitoring opportunity for a certain search space, and transmits a command when not transmitting a PDCCH to terminal 20 during the PDCCH monitoring opportunity.

[0099] The operation of the fifth embodiment may be performed during a specific period. The specific period may be set in advance in the base station 10 and the terminal 20, or may be notified (set) or changed from the base station 10 to the terminal 20. The method of notification from the base station 10 to the terminal 20 may be any of SIB, DCI, MAC CE, and RRC signaling.

[0100] The "specific period" may be a period in which multiple slots or multiple PDCCH monitoring opportunities are grouped together as one set.

[0101] According to the fifth embodiment, a terminal in a connected mode can perform control related to PDCCH monitoring using a simple wireless system.

[0102] Next, a description will be given of Example 6. Example 6 includes Example 6-1 and Example 6-2 as a variation, and each will be described below.

[0103] (Example 6-1) In Example 6-1, when a terminal 20 receives a command, it receives data on a PDSCH resource dedicated for operation in this embodiment. From the viewpoint of the base station 10, the base station 10 transmits a command when transmitting data on the PDSCH resource, and does not transmit a command when not transmitting data on the PDSCH resource. The PDSCH resource may be a time resource, a frequency resource, or a time-frequency resource.

[0104] Example 6-1 will be described with reference to Fig. 16. Here, it is assumed that a dedicated PDSCH resource is set for terminal 20, and data reception is performed using that PDSCH resource.

[0105] In the case shown on the left side of Fig. 16, when terminal 20 receives a command before the PDSCH resource, it receives data in the first PDSCH resource that arrives thereafter. In the example shown on the right side of Fig. 16, terminal 20 does not receive a command before the PDSCH resource, and therefore does not receive data in the first PDSCH resource that arrives thereafter.

[0106] It should be noted that while performing the above-mentioned proposed operation, terminal 20 may or may not perform normal PDCCH monitoring.

[0107] Information about the dedicated PDSCH resources (such as Mapping Type, PRB, TB scaling, and MCS) may be configured in advance in the base station 10 and the terminal 20, or may be notified (configured) or changed from the base station 10 to the terminal 20. The number of configured dedicated PDSCH resources may be one or more.

[0108] 17 and 18 show examples in which multiple PDSCH resources are configured in terminal 20. For example, PDSCH resources may be configured in terminal 20 in the format of a table shown in FIG.

[0109] Terminal 20 identifies the index of the PDSCH resource according to the number of times the command is received, and transmits data using the PDSCH resource corresponding to that index. Fig. 17 shows an example in which resource #1 is identified by receiving a single command.

[0110] According to Example 6-1, a terminal in connection mode can perform control relating to data reception using a simple wireless system.

[0111] (Example 6-2) In Example 6-2, when a terminal 20 receives a command, the terminal 20 transmits data on a PUSCH resource dedicated for operation in this embodiment. From the viewpoint of the base station 10, the base station 10 transmits a command when data reception is performed on the PUSCH resource, and does not transmit a command when data reception is not performed on the PUSCH resource. The PUSCH resource may be a time resource, a frequency resource, or a time-frequency resource.

[0112] Example 6-2 will be described with reference to Fig. 19. Here, it is assumed that a dedicated PUSCH resource is configured for terminal 20, and data transmission is performed using that PUSCH resource.

[0113] In the case shown on the left side of Fig. 19, when terminal 20 receives a command before the PUSCH resource, it transmits data in the first PUSCH resource that arrives thereafter. In the example shown on the right side of Fig. 19, terminal 20 does not receive a command before the PUSCH resource, and therefore does not transmit data in the first PUSCH resource that arrives thereafter.

[0114] It should be noted that while performing the above-mentioned proposed operation, terminal 20 may or may not perform normal PDCCH monitoring.

[0115] Information about the dedicated PUSCH resource (such as Mapping Type, PRB, TB scaling, and MCS) may be configured in advance in base station 10 and terminal 20, or may be notified (configured) or changed from base station 10 to terminal 20. The number of configured dedicated PUSCH resources may be one or more.

[0116] 20 and 21 show examples in which multiple PUSCH resources are configured in terminal 20. For example, PUSCH resources may be configured in terminal 20 in the format of a table shown in FIG.

[0117] Terminal 20 identifies the index of the PUSCH resource according to the number of times the command is received, and transmits data using the PUSCH resource corresponding to the index. Fig. 20 shows an example in which resource #1 is identified by receiving a command once.

[0118] According to Example 6-2, a terminal in connection mode can control data transmission using a simple wireless system.

[0119] (Other examples) The receiver included in the terminal 20 may be a circuit that only performs reception, or may be a device that also has a transmission function, such as an RFID that performs backscatter communication.

[0120] The terminal 20 in this embodiment may be equipped with not only a single receiver, but also multiple receivers of the same or different types. When multiple receivers are equipped, the receivers may be used for the same purpose or for different purposes. The purpose of each receiver may be specified to the terminal 20 by the base station 10, or may be specified in advance. Examples 1 to 3 will be described as specific examples of the purposes of multiple receivers.

[0121] <Example 1> The terminal 20 will not perform the proposed operation (the operation of Examples 1 to 6) unless the command reception results of at least two receivers match. When the command reception results of at least two receivers match, the terminal 20 will perform the proposed operation based on the command.

[0122] <Example 2> The terminal 20 uses the receiver #1 for Search Space Switching purposes and the receiver #2 for WUS purposes (using a command as a WUS).

[0123] <Example 3> Terminal 20 uses receiver #1 for receiving data using dedicated PDSCH resources and receiver #2 for receiving data using dedicated PUSCH resources.

[0124] (Device configuration) Next, a description will be given of an example of the functional configuration of the base station 10 and the terminal 20 that execute the processes and operations described above. The base station 10 and the terminal 20 include functions for implementing the above-mentioned embodiments 1 to 6. However, the base station 10 and the terminal 20 may each include only some of the functions described in embodiments 1 to 6.

[0125] <Base station 10> Fig. 22 is a diagram showing an example of the functional configuration of the base station 10. As shown in Fig. 22, the base station 10 has a transmitting unit 110, a receiving unit 120, a setting unit 130, and a control unit 140. The functional configuration shown in Fig. 22 is merely an example. The names of the functional divisions and functional units may be any as long as they can perform the operations related to the embodiment of the present invention. The transmitting unit 110 and the receiving unit 120 may be called a communication unit.

[0126] The transmitter 110 includes a function for generating a signal to be transmitted to the terminal 20 and transmitting the signal wirelessly. The transmitter 110 may be divided into a function for transmitting commands and a function for transmitting normal signals other than commands.

[0127] The receiving unit 120 has a function of receiving various signals transmitted from the terminal 20 and acquiring, for example, information of higher layers from the received signals. The transmitting unit 110 also has a function of transmitting, to the terminal 20, NR-PSS, NR-SSS, NR-PBCH, DL / UL control signals, control information, DL data, and the like.

[0128] The setting unit 130 stores preset setting information and various setting information to be transmitted to the terminal 20 in a storage device, and reads out the information from the storage device as needed.

[0129] The control unit 140 performs, for example, resource allocation and overall control of the base station 10. Note that the functional unit related to signal transmission in the control unit 140 may be included in the transmitting unit 110, and the functional unit related to signal reception in the control unit 140 may be included in the receiving unit 120. Furthermore, the transmitting unit 110 and the receiving unit 120 may be called a transmitter and a receiver, respectively.

[0130] <Terminal 20> Fig. 23 is a diagram showing an example of the functional configuration of the terminal 20. As shown in Fig. 23, the terminal 20 has a transmitting unit 210, a receiving unit 220, a setting unit 230, and a control unit 240. The functional configuration shown in Fig. 23 is merely an example. The names of the functional divisions and functional units may be any as long as they can execute the operations related to the embodiment of the present invention. The transmitting unit 210 and the receiving unit 220 may be called a communication unit.

[0131] The transmitter 210 creates a transmission signal from the transmission data and transmits the transmission signal wirelessly. The receiver 220 receives various signals wirelessly and acquires a higher layer signal from the received physical layer signal. The receiver 220 may be divided into a receiver (passive receiver) for receiving commands and a receiver for receiving normal signals other than commands. Also, as shown in FIG. 24, a passive receiver 211 may be provided in addition to the receiver 220 for receiving normal signals.

[0132] The setting unit 230 stores various setting information received from the base station 10 by the receiving unit 220 in a storage device, and reads it out from the storage device as needed. The setting unit 230 also stores setting information that is set in advance.

[0133] The control unit 240 performs the operation control described in the first to sixth embodiments based on information (commands, DCI, etc.) received from the base station 10. Note that the functional unit related to signal transmission in the control unit 240 may be included in the transmitting unit 210, and the functional unit related to signal reception in the control unit 240 may be included in the receiving unit 220. Furthermore, the transmitting unit 210 and the receiving unit 220 may be called a transmitter and a receiver, respectively.

[0134] According to Examples 1 to 4 of this embodiment, at least the terminals described in the following items are provided. (Section 1) a receiver for receiving commands; a control unit that switches an operation in a connection mode from a first operation to a second operation when the receiver receives a command; A terminal comprising: (Section 2) When the receiver receives a command, the control unit switches the state relating to the intermittent reception from a first state to a second state. 1. The terminal described in paragraph 1. (Section 3) When the receiver receives a command, the control unit switches whether or not to monitor a control channel in discontinuous reception. 2. A terminal according to claim 1 or 2. (Section 4) When the receiver receives a command, the control unit switches a search space for monitoring a control channel from a first search space to a second search space. A terminal according to any one of paragraphs 1 to 3. (Section 5) When the receiver receives a command, the control unit switches the bandwidth portion used by the terminal from a first bandwidth portion to a second bandwidth portion. A terminal according to any one of paragraphs 1 to 4. (Section 6) When the receiver receives a command, the control unit starts a timer, and when the timer expires, switches the second operation to the first operation. A terminal according to any one of paragraphs 1 to 5.

[0135] Any of clauses 1 to 6 enables a terminal in connected mode to perform operation control using a simple wireless system. According to clause 2, it is possible to perform operation control by controlling switching of states related to discontinuous reception. According to clause 3, it is possible to perform operation control by controlling execution of monitoring of a control channel in discontinuous reception. According to clause 4, it is possible to perform operation control by controlling switching of search spaces. According to clause 5, it is possible to perform operation control by controlling switching of BWPs. According to clause 6, it is possible to perform operation control by using a timer.

[0136] According to Examples 5 and 6 of this embodiment, at least the terminal and monitoring method described in the following items are provided. (Section 1) a receiver for receiving commands; a control unit that, when the receiver receives a command, monitors the control channel at a monitoring opportunity for the control channel, and, when the receiver does not receive the command, does not monitor the control channel at the monitoring opportunity; A terminal comprising: (Section 2) a receiver for receiving commands; a control unit that, when the receiver receives a command, determines to receive data using a preset data reception resource or a data reception resource notified from a base station; A terminal comprising: (Section 3) The control unit determines a data reception resource to be used from among a plurality of data reception resources based on the number of times the command has been received by the receiver. 2. The terminal described in paragraph 2. (Section 4) a receiver for receiving commands; a control unit that, when the receiver receives a command, determines to transmit data using a preset data transmission resource or a data transmission resource notified by a base station; A terminal comprising: (Section 5) The control unit determines a data transmission resource to be used from among a plurality of data transmission resources based on the number of times the command has been received by the receiver. 4. A terminal as described in paragraph 4. (Section 6) When a command is received by a receiver for receiving a command, monitoring the control channel at a monitoring opportunity for the control channel; If the command is not received by the receiver, monitoring of the control channel is not performed at the monitoring opportunity. The monitoring method performed by the device.

[0137] Any of clauses 1 to 6 enables a terminal in connected mode to control communications using a simple wireless system. According to clause 3, a data reception resource to be used can be identified from a plurality of data reception resources using a simple wireless system. According to clause 4, a data transmission resource to be used can be identified from a plurality of data transmission resources using a simple wireless system.

[0138] (Hardware configuration) The block diagrams (FIGS. 22 to 24) used in the description of the above embodiments show functional blocks. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method of realizing each functional block is not particularly limited. That is, each functional block may be realized using a single device that is physically or logically coupled, or may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, by wire, wirelessly, etc.) and these multiple devices. The functional block may be realized by combining software with the single device or the multiple devices.

[0139] Functions include, but are not limited to, judgment, determination, judgment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, election, establishment, comparison, assumption, expectation, consideration, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocation, mapping, and assignment. For example, a functional block (component) that performs transmission is called a transmitting unit or transmitter. As mentioned above, there are no particular limitations on how these functions are implemented.

[0140] For example, the base station 10, the terminal 20, etc. according to an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. Fig. 25 is a diagram illustrating an example of the hardware configuration of the base station 10 and the terminal 20 according to an embodiment of the present disclosure. The base station 10 and the terminal 20 described above may be physically configured as a computer device including a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.

[0141] In the following description, the term "apparatus" can be read as a circuit, a device, a unit, etc. The hardware configuration of the base station 10 and the terminal 20 may be configured to include one or more of the apparatuses shown in the drawings, or may be configured to exclude some of the apparatuses.

[0142] Each function in the base station 10 and the terminal 20 is realized by loading predetermined software (programs) onto hardware such as the processor 1001, the memory device 1002, etc., so that the processor 1001 performs calculations, controls communication by the communication device 1004, and controls at least one of reading and writing data in the memory device 1002 and the auxiliary memory device 1003.

[0143] The processor 1001 controls the entire computer by running, for example, an operating system. The processor 1001 may be configured as a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, etc. For example, the above-mentioned control unit 140, control unit 240, etc. may be realized by the processor 1001.

[0144] Furthermore, the processor 1001 reads programs (program codes), software modules, data, etc. from at least one of the auxiliary storage device 1003 and the communication device 1004 into the storage device 1002, and executes various processes in accordance with the programs. The programs used are those that cause a computer to execute at least some of the operations described in the above-described embodiments. For example, the control unit 140 of the base station 10 shown in FIG. 22 may be implemented by a control program stored in the storage device 1002 and executed by the processor 1001. Furthermore, for example, the control unit 240 of the terminal 20 shown in FIGS. 23 and 24 may be implemented by a control program stored in the storage device 1002 and executed by the processor 1001. While the above-described various processes have been described as being executed by one processor 1001, they may also be executed simultaneously or sequentially by two or more processors 1001. The processor 1001 may be implemented by one or more chips. The programs may be transmitted from a network via a telecommunications line.

[0145] The storage device 1002 is a computer-readable recording medium and may be configured, for example, by at least one of a read-only memory (ROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), a random access memory (RAM), etc. The storage device 1002 may also be called a register, a cache, a main memory, etc. The storage device 1002 can store executable programs (program codes), software modules, etc. for implementing a communication method according to an embodiment of the present disclosure.

[0146] The secondary storage device 1003 is a computer-readable recording medium, and may be, for example, at least one of an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (e.g., a compact disk, a digital versatile disk, a Blu-ray disc), a smart card, a flash memory (e.g., a card, a stick, a key drive), a floppy disk, a magnetic strip, etc. The secondary storage device 1003 may also be referred to as an secondary storage device. The above-mentioned storage medium may be, for example, a database, a server, or other appropriate medium including at least one of the storage device 1002 and the secondary storage device 1003.

[0147] The communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, or a communication module. The communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, a transmission / reception antenna, an amplifier unit, a transmission / reception unit, a transmission path interface, etc. may be realized by the communication device 1004. The transmission / reception unit may be implemented as a transmission unit and a reception unit that are physically or logically separated.

[0148] The input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives input from the outside. The output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that performs output to the outside. Note that the input device 1005 and the output device 1006 may be integrated into one device (for example, a touch panel).

[0149] Furthermore, each device such as the processor 1001 and the storage device 1002 is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or may be configured using different buses between each device.

[0150] Furthermore, base station 10 and terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), or a field programmable gate array (FPGA), and some or all of the functional blocks may be realized by the hardware. For example, processor 1001 may be implemented using at least one of these pieces of hardware.

[0151] Furthermore, the terminal 20 or the base station 10 may be provided in the vehicle 1. An example of the configuration of the vehicle 1 is shown in FIG.

[0152] As shown in Figure 26, the vehicle 1 is equipped with a drive unit 2, a steering unit 3, an accelerator pedal 4, a brake pedal 5, a shift lever 6, left and right front wheels 7, left and right rear wheels 8, an axle 9, an electronic control unit 11, various sensors 21 to 29, an information service unit 12 and a communication module 13.

[0153] The drive unit 2 is composed of, for example, an engine, a motor, or a hybrid of an engine and a motor. The steering unit 3 includes at least a steering wheel (also called a handle), and is configured to steer at least one of the front wheels and the rear wheels based on the operation of the steering wheel operated by the user.

[0154] The electronic control unit 11 is made up of a microprocessor 31, memory (ROM, RAM) 32, and a communication port (IO port) 33. Signals are input to the electronic control unit 11 from various sensors 21 to 27 provided in the vehicle. The electronic control unit 11 may also be called an ECU (Electronic Control Unit).

[0155] The signals from the various sensors 21 to 28 include a current signal from a current sensor 21 that senses the current of the motor, a rotation speed signal of the front and rear wheels obtained by a rotation speed sensor 22, an air pressure signal of the front and rear wheels obtained by an air pressure sensor 23, a vehicle speed signal obtained by a vehicle speed sensor 24, an acceleration signal obtained by an acceleration sensor 25, an accelerator pedal depression amount signal obtained by an accelerator pedal sensor 29, a brake pedal depression amount signal obtained by a brake pedal sensor 26, a shift lever operation signal obtained by a shift lever sensor 27, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by an object detection sensor 28.

[0156] The information service unit 12 is composed of various devices, such as a car navigation system, an audio system, speakers, a television, and a radio, for providing various types of information such as driving information, traffic information, and entertainment information, and one or more ECUs for controlling these devices. The information service unit 12 uses information acquired from external devices via the communication module 13, etc., to provide various types of multimedia information and multimedia services to the occupants of the vehicle 1.

[0157] The driving assistance system unit 30 is composed of various devices that provide functions for preventing accidents and reducing the driver's driving burden, such as millimeter-wave radar, LiDAR (Light Detection and Ranging), cameras, positioning locators (e.g., GNSS, etc.), map information (e.g., high-definition (HD) maps, autonomous vehicle (AV) maps, etc.), gyro systems (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence) chips, and AI processors, as well as one or more ECUs that control these devices. The driving assistance system unit 30 also transmits and receives various information via the communication module 13 to realize driving assistance functions or autonomous driving functions.

[0158] The communication module 13 can communicate with the microprocessor 31 and components of the vehicle 1 via the communication port. For example, the communication module 13 transmits and receives data via the communication port 33 to and from the drive unit 2, steering unit 3, accelerator pedal 4, brake pedal 5, shift lever 6, left and right front wheels 7, left and right rear wheels 8, axles 9, the microprocessor 31 and memory (ROM, RAM) 32 in the electronic control unit 11, and sensors 21 to 28, which are provided in the vehicle 1.

[0159] The communication module 13 is a communication device that can be controlled by the microprocessor 31 of the electronic control unit 11 and can communicate with an external device. For example, it transmits and receives various information to and from the external device via wireless communication. The communication module 13 may be located either inside or outside the electronic control unit 11. The external device may be, for example, a base station, a mobile station, or the like.

[0160] The communication module 13 transmits, via wireless communication, to an external device a current signal from the current sensor that is input to the electronic control unit 11. The communication module 13 also transmits, via wireless communication, to an external device, the rotation speed signals of the front and rear wheels acquired by the rotation speed sensor 22, the air pressure signals of the front and rear wheels acquired by the air pressure sensor 23, the vehicle speed signal acquired by the vehicle speed sensor 24, the acceleration signal acquired by the acceleration sensor 25, the accelerator pedal depression amount signal acquired by the accelerator pedal sensor 29, the brake pedal depression amount signal acquired by the brake pedal sensor 26, the shift lever operation signal acquired by the shift lever sensor 27, and the detection signals for detecting obstacles, vehicles, pedestrians, etc. acquired by the object detection sensor 28, all of which are input to the electronic control unit 11.

[0161] The communication module 13 receives various information (traffic information, traffic signal information, vehicle distance information, etc.) transmitted from external devices and displays it on the information service unit 12 provided in the vehicle. The communication module 13 also stores the various information received from external devices in a memory 32 that can be used by the microprocessor 31. Based on the information stored in the memory 32, the microprocessor 31 may control the drive unit 2, steering unit 3, accelerator pedal 4, brake pedal 5, shift lever 6, left and right front wheels 7, left and right rear wheels 8, axles 9, sensors 21 to 28, and the like provided in the vehicle 1.

[0162] The communication module 13 may be the terminal 20 or the base station 10 described in this embodiment.

[0163] (Supplementary explanation of the embodiment) Although the embodiments of the present invention have been described above, the disclosed invention is not limited to such embodiments, and those skilled in the art will understand various modifications, alterations, alternatives, and substitutions. While specific numerical examples have been used to facilitate understanding of the invention, unless otherwise specified, these numerical values ​​are merely examples, and any appropriate values ​​may be used. The division of items in the above description is not essential to the present invention; two or more items may be combined as needed, and items described in one item may apply to items described in another item (unless inconsistent). The boundaries between functional units or processing units in the functional block diagram do not necessarily correspond to the boundaries between physical components. The operations of multiple functional units may be performed by a single physical component, or the operations of a single functional unit may be performed by multiple physical components. The order of the processing steps described in the embodiments may be reversed as long as there is no contradiction. For convenience of processing description, the base station 10 and terminal 20 have been described using functional block diagrams. However, such devices may be implemented using hardware, software, or a combination thereof. The software operated by the processor of the base station 10 in accordance with an embodiment of the present invention and the software operated by the processor of the terminal 20 in accordance with an embodiment of the present invention may each be stored in random access memory (RAM), flash memory, read-only memory (ROM), EPROM, EEPROM, registers, hard disk (HDD), removable disk, CD-ROM, database, server or any other suitable storage medium.

[0164] Furthermore, the notification of information is not limited to the aspects / embodiments described in the present disclosure, and may be performed using other methods. For example, the notification of information may be performed by physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information (Master Information Block (MIB), System Information Block (SIB)), other signals, or a combination thereof. Furthermore, the RRC signaling may be referred to as an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like.

[0165] Each aspect / embodiment described in the present disclosure may be any of the following: LTE (Long Term Evolution), LTE-Advanced (LTE-A), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (x is, for example, an integer or decimal number)), FRA (Future Radio Access), NR (new Radio), New radio access (NX), Future generation radio access (FX), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE The present invention may be applied to at least one of systems using 802.20, UWB (Ultra-Wideband), Bluetooth (registered trademark), or other appropriate systems, and next-generation systems that are extended, modified, created, or defined based on these systems. The present invention may also be applied to a combination of multiple systems (e.g., a combination of at least one of LTE and LTE-A with 5G).

[0166] The order of the procedures, sequences, flowcharts, etc. of each aspect / embodiment described herein may be changed unless it is consistent. For example, the methods described in this disclosure present elements of various steps using an example order and are not limited to the particular order presented.

[0167] In this specification, a specific operation that is described as being performed by the base station 10 may also be performed by its upper node in some cases. In a network consisting of one or more network nodes having the base station 10, it is clear that various operations performed for communication with the terminal 20 may be performed by at least one of the base station 10 and another network node other than the base station 10 (such as, but not limited to, an MME or an S-GW). Although the above example illustrates a case where there is one other network node other than the base station 10, the other network node may be a combination of multiple other network nodes (such as an MME and an S-GW).

[0168] The information or signals described in the present disclosure may be output from a higher layer (or a lower layer) to a lower layer (or a higher layer), or may be input / output via multiple network nodes.

[0169] Input and output information may be stored in a specific location (for example, memory) or may be managed using a management table. Input and output information may be overwritten, updated, or added to. Output information may be deleted. Input information may be sent to another device.

[0170] In the present disclosure, the determination may be made based on a value represented by one bit (0 or 1), a Boolean value (true or false), or a numerical comparison (e.g., comparison with a predetermined value).

[0171] Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.

[0172] Software, instructions, information, etc. may also be transmitted or received over a transmission medium. For example, if software is transmitted from a website, server, or other remote source using wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and / or wireless technologies (such as infrared, microwave), then these wired and / or wireless technologies are included within the definition of transmission media.

[0173] The information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0174] Note that terms explained in this disclosure and terms necessary for understanding this disclosure may be replaced with terms having the same or similar meanings. For example, at least one of a channel and a symbol may be a signal (signaling). Furthermore, a signal may be a message. Furthermore, a component carrier (CC) may be called a carrier frequency, a cell, a frequency carrier, etc.

[0175] As used in this disclosure, the terms "system" and "network" are used interchangeably.

[0176] Furthermore, the information, parameters, etc. described in the present disclosure may be expressed using absolute values, relative values ​​from a predetermined value, or other corresponding information. For example, a radio resource may be indicated by an index.

[0177] The names used for the above-described parameters are not intended to be limiting in any way. Furthermore, the mathematical expressions using these parameters may differ from those explicitly disclosed in this disclosure. The various channels (e.g., PUSCH, PUCCH, PDCCH, etc.) and information elements may be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not intended to be limiting in any way.

[0178] In this disclosure, terms such as "base station (BS)," "radio base station," "base station," "fixed station," "NodeB," "eNodeB (eNB)," "gNodeB (gNB)," "access point," "transmission point," "reception point," "transmission / reception point," "cell," "sector," "cell group," "carrier," and "component carrier" may be used interchangeably. Base stations may also be referred to by terms such as macrocell, small cell, femtocell, and picocell.

[0179] A base station can accommodate one or more (e.g., three) cells. When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be divided into multiple smaller areas, and each smaller area can be provided with communication service by a base station subsystem (e.g., a small indoor base station (RRH: Remote Radio Head)). The term "cell" or "sector" refers to a part or the entire coverage area of ​​a base station and / or base station subsystem that provides communication service within this coverage.

[0180] In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," etc. may be used interchangeably.

[0181] A mobile station may also be referred to by those skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.

[0182] At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a communication device, etc. At least one of the base station and the mobile station may be a device mounted on a mobile body, or the mobile body itself. The mobile body may be a vehicle (e.g., a car, an airplane, etc.), an unmanned mobile body (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). At least one of the base station and the mobile station may also include devices that do not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.

[0183] Furthermore, a base station in the present disclosure may be read as a terminal. For example, the aspects / embodiments of the present disclosure may be applied to a configuration in which communication between a base station and a terminal is replaced with communication between a plurality of terminals 20 (which may be called, for example, D2D (Device-to-Device) or V2X (Vehicle-to-Everything)). In this case, the terminal 20 may be configured to have the functions of the base station 10 described above. Furthermore, terms such as "uplink" and "downlink" may be read as terms corresponding to communication between terminals (for example, "side"). For example, terms such as an uplink channel and a downlink channel may be read as a side channel.

[0184] Similarly, the term "terminal" in the present disclosure may be read as "base station." In this case, the base station may be configured to have the functions of the terminal described above.

[0185] As used in this disclosure, the terms "determining" and "determining" may encompass a wide variety of actions. "Determining" and "determining" may include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiring (e.g., searching in a table, database, or other data structure), ascertaining, and the like. "Determining" and "determining" may also include receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory), and the like. Furthermore, "judgment" and "decision" can include regarding resolving, selecting, choosing, establishing, comparing, etc. as having been "judged" or "decided." In other words, "judgment" and "decision" can include regarding some action as having been "judged" or "decided." Furthermore, "judgment (decision)" can be interpreted as "assuming," "expecting," "considering," etc.

[0186] The terms "connected," "coupled," or any variation thereof, refer to any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are "connected" or "coupled" to each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, "connected" may be read as "access." As used in this disclosure, two elements may be considered to be "connected" or "coupled" to each other using one or more wires, cables, and / or printed electrical connections, as well as electromagnetic energy having wavelengths in the radio frequency range, microwave range, and optical (both visible and invisible) range, as some non-limiting and non-exhaustive examples.

[0187] The reference signal may be abbreviated as RS (Reference Signal) or may be called a pilot depending on the applicable standard.

[0188] As used in this disclosure, the phrase "based on" does not mean "based only on," unless expressly stated otherwise. In other words, the phrase "based on" means both "based only on" and "based at least on."

[0189] As used in this disclosure, any reference to an element using a designation such as "first," "second," etc. does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, a reference to a first and a second element does not imply that only two elements may be employed or that the first element must in some way precede the second element.

[0190] The "means" in the configuration of each of the above devices may be replaced with "part," "circuit," "device," etc.

[0191] When used in this disclosure, the terms "include," "including," and variations thereof are intended to be inclusive, similar to the term "comprising." Furthermore, when used in this disclosure, the term "or" is not intended to be an exclusive or.

[0192] A radio frame may be composed of one or more frames in the time domain. Each of the one or more frames in the time domain may be called a subframe. A subframe may further be composed of one or more slots in the time domain. A subframe may have a fixed time length (e.g., 1 ms) that is independent of numerology.

[0193] Numerology may be communication parameters that apply to at least one of transmission and reception of a signal or channel, such as subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame structure, specific filtering operations performed by the transceiver in the frequency domain, and specific windowing operations performed by the transceiver in the time domain.

[0194] A slot may be composed of one or more symbols (such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol or a Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol) in the time domain. A slot may be a time unit based on numerology.

[0195] A slot may include multiple minislots. Each minislot may consist of one or multiple symbols in the time domain. A minislot may also be called a subslot. A minislot may consist of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (or PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (or PUSCH) mapping type B.

[0196] The radio frame, subframe, slot, minislot, and symbol all represent time units for transmitting signals, and may be referred to by other names corresponding to the radio frame, subframe, slot, minislot, and symbol.

[0197] For example, one subframe may be called a transmission time interval (TTI), multiple consecutive subframes may be called a TTI, or one slot or one minislot may be called a TTI. That is, at least one of the subframe and the TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (for example, 1-13 symbols), or a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, minislot, etc. instead of a subframe.

[0198] Here, TTI refers to, for example, the smallest time unit for scheduling in wireless communication. For example, in an LTE system, a base station performs scheduling to allocate wireless resources (such as frequency bandwidth and transmission power that can be used by each terminal 20) to each terminal 20 in TTI units. Note that the definition of TTI is not limited to this.

[0199] The TTI may be a transmission time unit for a channel-encoded data packet (transport block), a code block, a code word, etc., or may be a processing unit for scheduling, link adaptation, etc. When a TTI is given, the time interval (e.g., the number of symbols) to which a transport block, a code block, a code word, etc. is actually mapped may be shorter than the TTI.

[0200] When one slot or one minislot is called a TTI, one or more TTIs (i.e., one or more slots or one or more minislots) may be the minimum time unit for scheduling. Also, the number of slots (minislots) constituting the minimum time unit for scheduling may be controlled.

[0201] A TTI having a time length of 1 ms may be called a regular TTI (TTI in LTE Rel. 8-12), normal TTI, long TTI, regular subframe, normal subframe, long subframe, slot, etc. A TTI shorter than a regular TTI may be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.

[0202] In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length of more than 1 ms, and a short TTI (e.g., a shortened TTI, etc.) may be interpreted as a TTI having a TTI length shorter than the TTI length of a long TTI and equal to or greater than 1 ms.

[0203] A resource block (RB) is a resource allocation unit in the time domain and frequency domain, and may include one or more consecutive subcarriers in the frequency domain. The number of subcarriers included in an RB may be the same regardless of numerology, for example, 12. The number of subcarriers included in an RB may also be determined based on numerology.

[0204] The time domain of an RB may include one or more symbols and may have a length of one slot, one minislot, one subframe, or one TTI. One TTI, one subframe, etc. may each be composed of one or more resource blocks.

[0205] Note that one or more RBs may also be called a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, or the like.

[0206] Furthermore, a resource block may be composed of one or more resource elements (REs). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0207] A Bandwidth Part (BWP) (which may also be referred to as a fractional bandwidth) may represent a subset of contiguous common resource blocks (RBs) for a given numerology on a given carrier, where the common RBs may be identified by their index relative to a common reference point of the carrier. PRBs may be defined in a given BWP and numbered within that BWP.

[0208] The BWP may include a BWP for UL (UL BWP) and a BWP for DL ​​(DL BWP). One or more BWPs may be configured for a UE within one carrier.

[0209] At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal / channel outside the active BWP. Note that the terms "cell," "carrier," etc. in this disclosure may be read as "BWP."

[0210] The above-described structures of radio frames, subframes, slots, minislots, symbols, etc. are merely examples. For example, the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, etc. may be changed in various ways.

[0211] In this disclosure, where articles are added by translation, such as a, an, and the in English, the disclosure may include that the nouns following these articles are in the plural form.

[0212] In the present disclosure, the term "A and B are different" may mean "A and B are different from each other." The term may also mean "A and B are each different from C." Terms such as "separate" and "coupled" may also be interpreted in the same way as "different."

[0213] Each aspect / embodiment described in this disclosure may be used alone, in combination, or switched depending on the implementation. Furthermore, notification of predetermined information (e.g., notification that "X is true") is not limited to being done explicitly, but may be done implicitly (e.g., by not notifying the predetermined information).

[0214] In the present disclosure, an SS block or a CSI-RS is an example of a synchronization signal or a reference signal.

[0215] Although the present disclosure has been described in detail above, it is clear to those skilled in the art that the present disclosure is not limited to the embodiments described herein. The present disclosure can be implemented in modified and altered forms without departing from the spirit and scope of the present disclosure as defined by the claims. Therefore, the description of the present disclosure is intended to be illustrative and does not have any limiting meaning on the present disclosure. [Explanation of symbols]

[0216] 10 base station 110 Transmitter 120 Receiver 130 Setting section 140 Control Unit 20 terminals 210 Transmitter 220 Receiving unit 221 Passive Receiver 230 Setting Section 240 Control Unit 1001 processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication equipment 1005 Input Device 1006 Output Device

Claims

1. a receiver for receiving commands, the receiver being a passive receiver that operates using power obtained from a carrier wave transmitted from a transmitter; a control unit that switches an operation in a connection mode from a first operation to a second operation when the receiver receives a command; A terminal comprising:

2. When the receiver receives a command, the control unit switches the state relating to discontinuous reception from a first state to a second state. The terminal according to claim 1 .

3. When the receiver receives a command, the control unit switches whether or not to monitor a control channel in discontinuous reception.

3. The terminal according to claim 1 or 2.

4. When the receiver receives a command, the control unit switches a search space for monitoring a control channel from a first search space to a second search space. A terminal according to any one of claims 1 to 3.

5. When the receiver receives a command, the control unit switches the bandwidth portion used by the terminal from a first bandwidth portion to a second bandwidth portion. A terminal according to any one of claims 1 to 4.

6. When the receiver receives a command, the control unit starts a timer, and when the timer expires, switches the second operation to the first operation. A terminal according to any one of claims 1 to 5.

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