Terminal and communication method

Abstract

A terminal is provided with: a first reception unit that receives a first signal from a base station; a second reception unit that receives a second signal from the base station with less power consumption than the first reception unit; and a control unit that activates or deactivates the first reception unit and the second reception unit, respectively, and in a state in which the first reception unit is activated and the second reception unit is deactivated, the control unit activates the second reception unit and then deactivates the first reception unit.

Description

Technical Field

[0001] The present invention relates to a terminal and a communication method in a wireless communication system. Background Art

[0002] In the Universal Mobile Telecommunication System (UMTS) network, Long Term Evolution (LTE) is standardized for the purpose of higher data rates, low latency, etc. In addition, the successor systems of LTE are also being studied for the purpose of further broadband and high speed from LTE. Among the successor systems of LTE, there are systems called LTE-Advanced (LTE-A), Future Radio Access (FRA), fifth generation mobile communication system (5G), 5Gplus (5G+), new radio access technology (New-RAT), new radio access technology (NR), new radio (NR), etc.

[0003] In NR, in order to meet the requirements of achieving a throughput of more than 10 Gbps and keeping the delay between wireless sections to less than 1 ms, various wireless technologies and network architectures have been studied (for example, refer to Non-Patent Document 1).

[0004] In addition, in future systems, research is being conducted to reduce power consumption by performing transmission and reception based on a simple transceiver, circuit, wireless system (Wake up receiver / circuit, hereinafter referred to as "wake up receiver" or "WUR") and signals separately from the transceiver, circuit, wireless system (Main receiver / circuit, hereinafter referred to as "main receiver" or "main circuit") and signals that perform actual data transmission and reception between terminals and base stations.

[0005] Prior art literature

[0006] Non-patent literature

[0007] Non-patent document 1: 3GPP TS 38.300 V17.1.0 (2022-06) Summary of the invention

[0008] Problems to be solved by the invention

[0009] When the wakeup receiver is activated to monitor the presence of data, power consumption can be reduced by deactivating the main receiver. However, the detailed operation process of a terminal equipped with a wakeup receiver has not yet been specified.

[0010] The present invention has been made in view of the above-mentioned point, and an object of the present invention is to control a simple receiver and a main receiver of a terminal mounted in a wireless communication system.

[0011] Means for solving problems

[0012] According to the disclosed technology, a terminal is provided, wherein the terminal comprises: a first receiving unit, which receives a first signal from a base station; a second receiving unit, which receives a second signal from the base station with a power consumption smaller than that of the first receiving unit; and a control unit, which respectively activates or deactivates the first receiving unit and the second receiving unit, wherein when the first receiving unit is activated and the second receiving unit is deactivated, the control unit deactivates the first receiving unit after activating the second receiving unit.

[0013] Effects of the Invention

[0014] According to the disclosed technology, it is possible to control a simple receiver and a main receiver of a terminal installed in a wireless communication system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a diagram showing a configuration example of a wireless communication system in an embodiment of the present invention.

[0016] Figure 2 This is a flowchart for explaining example (1) of control related to waking up a receiver according to an embodiment of the present invention.

[0017] Figure 3 This is a flowchart for explaining example (2) of control related to waking up the receiver according to an embodiment of the present invention.

[0018] Figure 4 This is a flowchart for explaining example (3) of control related to waking up the receiver according to an embodiment of the present invention.

[0019] Figure 5 It is a diagram showing an example of the functional configuration of the base station 10 in the embodiment of the present invention.

[0020] Figure 6 This is a diagram showing an example of the functional configuration of the terminal 20 in the embodiment of the present invention.

[0021] Figure 7 This is a diagram showing an example of the hardware configuration of the base station 10 or the terminal 20 in the embodiment of the present invention.

[0022] Figure 8 1 is a diagram showing an example of the structure of a vehicle 2001 in the embodiment of the present invention. DETAILED DESCRIPTION

[0023] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In addition, the embodiment described below is only an example, and the embodiment to which the present invention is applied is not limited to the following embodiment.

[0024] In the operation of the wireless communication system of the embodiment of the present invention, existing technologies are appropriately used. The existing technologies are, for example, existing LTE, but are not limited to existing LTE. In addition, unless otherwise specified, the term "LTE" used in this specification has a broad meaning including LTE-Advanced and subsequent methods (e.g., NR) of LTE-Advanced.

[0025] In addition, in the embodiments of the present invention described below, the terms SS (Synchronization Signal), PSS (Primary SS), SSS (Secondary SS), PBCH (Physical broadcast channel), PRACH (Physical random access channel), PDCCH (Physical Downlink Control Channel), PDSCH (Physical Downlink Shared Channel), PUCCH (Physical Uplink Control Channel), PUSCH (Physical Uplink Shared Channel), etc. used in the existing LTE are used. These are for the convenience of recording, and the same signals, functions, etc. may also be referred to by other names. In addition, the above terms in NR correspond to NR-SS, NR-PSS, NR-SSS, NR-PBCH, NR-PRACH, etc. However, even signals used for NR are not necessarily clearly recorded as "NR-".

[0026] Furthermore, in the embodiments of the present invention, the duplexing method may be a TDD (Time Division Duplex) method, an FDD (Frequency Division Duplex) method, or other methods (for example, Flexible Duplex, etc.).

[0027] In the embodiment of the present invention, “configuring” wireless parameters and the like may be pre-configuring predetermined values, or may be configuring wireless parameters notified from the base station 10 or the terminal 20 .

[0028] Figure 1 1 is a diagram showing a configuration example of a wireless communication system in an embodiment of the present invention. Figure 1 As shown, the wireless communication system in the embodiment of the present invention includes a base station 10 and a terminal 20. Figure 1 Although one base station 10 and one terminal 20 are shown in each figure, this is only an example and there may be a plurality of base stations 10 and a plurality of terminals 20.

[0029] 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 the wireless signal are defined by the time domain and the frequency domain. The time domain can be defined by the number of OFDM (Orthogonal Frequency Division Multiplexing) symbols, and the frequency domain can be defined by the number of subcarriers or the number of resource blocks. The base station 10 sends a synchronization signal and system information to the terminal 20. Synchronization signals are, for example, NR-PSS and NR-SSS. System information is sent, for example, through NR-PBCH, also called broadcast information. The synchronization signal and system information may also be referred to as SSB (SS / PBCH block). As Figure 1As shown, the base station 10 sends a control signal or data to the terminal 20 via DL (Downlink), and receives a control signal or data from the terminal 20 via UL (Uplink). Both the base station 10 and the terminal 20 can perform beamforming to send and receive signals. In addition, both the base station 10 and the terminal 20 can apply MIMO (Multiple Input Multiple Output)-based communications to DL or UL. In addition, the base station 10 and the terminal 20 can also communicate via a secondary cell (SCell: Secondary Cell) and a primary cell (PCell: Primary Cell) based on CA (Carrier Aggregation). Furthermore, the terminal 20 can also communicate via the primary cell of the base station 10 based on DC (Dual Connectivity) and the primary and secondary cell group cells (PSCell: Primary SCG Cell) of other base stations 10.

[0030] The terminal 20 is a communication device having a wireless communication function, such as a smart phone, a mobile phone, a tablet computer, a wearable terminal, or an M2M (Machine-to-Machine) communication module. Figure 1 As shown, the terminal 20 receives a control signal or data from the base station 10 via DL and transmits a control signal or data to the base station 10 via UL, thereby utilizing various communication services provided by the wireless communication system. In addition, the terminal 20 receives various reference signals transmitted from the base station 10 and performs measurement of propagation path quality based on the reception result of the reference signal.

[0031] Here, in the existing system, in order to perform data transmission and reception, the terminal 20 needs to wake up once in each DRX (Discontinuous reception) cycle to receive the scheduling information sent from the base station 10, etc. and periodically monitor. Even when no data is transmitted or received, the monitoring is performed, so the power consumption of the terminal 20 is large, which has an adverse effect on battery performance.

[0032] In addition, in future systems, it is being studied to perform transmission and reception based on a simple transceiver, circuit, wireless system (Wake up receiver / circuit, hereinafter referred to as "wake up receiver" or "WUR") and signal separately from the transceiver, circuit, wireless system (Main receiver / circuit, hereinafter referred to as "main receiver" or "main circuit") and signal that actually transmit and receive data between the terminal 20 and the base station 10, thereby notifying the presence or absence of data for the terminal 20 and reducing power consumption. That is, the power required for the transmission and reception of the WUR can also be smaller than the power required for the transmission and reception of the main circuit.

[0033] During the period of monitoring the presence or absence of data through WUR, the main circuit for normal data transmission and reception is set to OFF (disabled), so that during the period when there is no signaling or data service, the terminal 20 does not need to set the main circuit to ON (enabled), and power consumption can be expected to be reduced. In addition, the signal for the main receiver and the signal for the wake-up receiver can be different or the same.

[0034] On the other hand, detailed operations of the terminal 20 equipped with the WUR, such as associated operations of the WUR and the main circuit, layer 1 steps, etc., have not yet been specified.

[0035] Here, the states may be separately defined according to the circuit state (ON or OFF) mounted on the terminal as shown in Table 1. In addition, ON may mean activated and / or in action, and OFF may mean deactivated and / or stopped. During the OFF period, the receiver or circuit can reduce power consumption.

[0036] [Table 1]

[0037]

[0038] As shown in Table 1, state 1 can be defined as main circuit OFF and WUR OFF, state 2 can be defined as main circuit OFF and WUR ON, state 3 can be defined as main circuit ON (idle) and WUR OFF, state 4 can be defined as main circuit ON (idle) and WUR ON, state 5 can be defined as main circuit ON (connected) and WUR OFF, and state 6 can be defined as main circuit ON (connected) and WUR ON. The following mainly describes the actions and state transitions related to state 4 or state 6.

[0039] The terminal 20 equipped with WUR may also be provided with the action of state 4 or state 6 [main circuit ON / WUR ON] so that it can be transferred from or to other states. In addition, the record [main circuit X / WUR Y] indicates the state where the main circuit is X and the state where WUR is Y.

[0040] For example, the following actions 1) to 5) may be performed.

[0041] Operation 1) When transitioning from state 3 or state 5 [main circuit ON / WUR OFF] to state 2 [main circuit OFF / WUR ON], it is also possible to go through state 4 or state 6 [main circuit ON / WUR ON].

[0042] Action 2) The action in state 4 or state 6 [main circuit ON / WUR ON] can also be specified.

[0043] Action 3) The conditions for transitioning from state 4 or state 6 [main circuit ON / WUR ON] to state 2 [main circuit OFF / WUR ON] may be defined.

[0044] Action 4) The conditions for transitioning from state 2 [main circuit OFF / WUR ON] to state 4 or state 6 [main circuit ON / WUR ON] may be defined.

[0045] Action 5) The terminal 20 may also report the UE capability related to state 4 or state 6 [main circuit ON / WUR ON] to the base station 10.

[0046] The following describes operation 1) when transitioning from state 3 or state 5 [main circuit ON / WUR OFF] to state 2 [main circuit OFF / WUR ON], it is also possible to go through state 4 or state 6 [main circuit ON / WUR ON].

[0047] Case 1-1) The base station 10 instructs the terminal 20 to transition to state 2 [main circuit OFF / WUR ON].

[0048] Figure 2 This is a flowchart of Example (1) of control related to the wake-up receiver for explaining an embodiment of the present invention. In step S101, the terminal 20 is [main circuit ON / WUR OFF]. In the next step S102, the base station 10 sends an instruction to request a report of the state of WUR to the terminal 20. In the next step S103, the terminal 20 migrates to [main circuit ON / WURON].

[0049] In the next step S104, the terminal 20 determines whether the WUR is in the service area or outside the service area. For example, it is also possible to determine whether the WUR is in the service area or outside the service area based on the results of the measurement or report based on the main circuit. In addition, for example, it is also possible to consider the change in location information from the last reported state to determine whether the WUR is in the service area or outside the service area.

[0050] In the next step S105, the terminal 20 reports to the base station 10 whether the WUR is in the service area or out of the service area. For example, the terminal 20 may report the last state to the base station 10 without moving from the last reported state. In addition, for example, the terminal 20 may also measure the reception quality of the beacon, etc., by setting the WUR to ON, and determine whether it is in the service area or out of the service area.

[0051] In the next step S106, the base station 10 determines whether the conditions for WUR to be in the service area and to be transferred to [Main Circuit OFF / WUR ON] are met. If the conditions are met, the process proceeds to step S107, and if the conditions are not met, the process proceeds to step S109. Details of the conditions for transferring to [Main Circuit OFF / WUR ON] are described in action 3).

[0052] In step S107, the base station 10 instructs the terminal 20 to transition to [main circuit OFF / WUR ON]. In the next step S108, the terminal 20 transitions to [main circuit OFF / WUR ON].

[0053] On the other hand, in step S109, the terminal 20 may maintain WUR ON or set WUR OFF. Furthermore, when maintaining WUR ON, the terminal 20 may report to the base station 10 that WUR ON is maintained.

[0054] Case 1-2) The base station 10 instructs the terminal 20 to transition to state 4 or state 6 [main circuit ON / WUR ON].

[0055] Figure 3 This is a flowchart of Example (2) of control related to the wake-up receiver for explaining an embodiment of the present invention. In step S201, the terminal 20 is [main circuit ON / WUR OFF]. In the next step S202, the base station 10 sends an instruction to the terminal 20 to migrate to [main circuit ON / WUR ON]. In the next step S203, the terminal 20 migrates to [main circuit ON / WUR ON].

[0056] In the next step S204, the terminal 20 determines whether the WUR is in the service area or outside the service area. For example, it is also possible to determine whether the WUR is in the service area or outside the service area based on the results of the measurement or report based on the main circuit. In addition, for example, it is also possible to consider the change in location information from the last reported state to determine whether the WUR is in the service area or outside the service area.

[0057] In the next step S205, the terminal 20 reports to the base station 10 whether the WUR is in the service area or out of the service area. For example, the terminal 20 may report the last state to the base station 10 without moving from the last reported state. In addition, for example, the terminal 20 may also measure the reception quality of the beacon, etc., by setting the WUR to ON, and determine whether it is in the service area or out of the service area.

[0058] In the next step S206, the base station 10 determines whether the conditions for WUR to be in the service area and to be transferred to [Main Circuit OFF / WUR ON] are met. If the conditions are met, the process proceeds to step S207, and if the conditions are not met, the process proceeds to step S209. Details of the conditions for transferring to [Main Circuit OFF / WUR ON] are described in action 3).

[0059] In step S207, the base station 10 instructs the terminal 20 to transition to [main circuit OFF / WUR ON]. In the next step S208, the terminal 20 transitions to [main circuit OFF / WUR ON].

[0060] On the other hand, in step S209, the terminal 20 may maintain WUR ON or set WUR OFF. Furthermore, when maintaining WUR ON, the terminal 20 may report to the base station 10 that WUR ON is maintained.

[0061] Case 2) The terminal 20 decides to transition to state 2 [main circuit OFF / WUR ON].

[0062] Figure 4 This is a flowchart for explaining example (3) of control related to waking up the receiver according to the embodiment of the present invention. In step S301, the terminal 20 is in [main circuit ON / WUR OFF]. In the next step S302, the terminal 20 transitions to [main circuit ON / WUR OFF].

[0063] In the next step S303, the terminal 20 determines whether the WUR is inside or outside the service area. For example, it is also possible to determine whether the WUR is inside or outside the service area based on the results of the measurement or report based on the main circuit. In addition, for example, it is also possible to consider the change in location information from the last reported state to determine whether the WUR is inside or outside the service area. For example, the terminal 20 may also determine whether the WUR is inside or outside the service area based on the last state without moving from the last reported state. In addition, for example, the terminal 20 may also determine whether it is inside or outside the service area by measuring the reception quality of the beacon, etc., by setting the WUR to ON.

[0064] In the next step S304, the terminal 20 determines whether the condition that WUR is within the service area and migrates to [Main Circuit OFF / WUR ON] is satisfied. If the condition is satisfied, the process proceeds to step S305, and if the condition is not satisfied, the process proceeds to step S306. Details of the condition for migrating to [Main Circuit OFF / WUR ON] are described in action 3).

[0065] In step S305, the terminal 20 transitions to [main circuit OFF / WUR ON].

[0066] On the other hand, in step S306, the terminal 20 may also perform a predetermined action when the WUR is out of the service area. For example, the predetermined action may be any one or more combinations of 1)-6) shown below.

[0067] 1) The terminal 20 may report to the base station 10 that the transition to [main circuit OFF / WUR ON] cannot be performed.

[0068] 2) The terminal 20 may also assume that the base station 10 sets the condition for transition to [main circuit OFF / WUR ON] again.

[0069] 3) It is also conceivable that the terminal 20 is instructed by the base station 10 to transition to [main circuit OFF / WUR ON].

[0070] 4) It is also conceivable that the terminal 20 is configured to perform measurements from the base station 10 for determining whether the WUR is within or outside the service area.

[0071] 5) The terminal 20 may reset the condition for transitioning to [Main circuit OFF / WUR ON]. For example, the timer related to the condition may be reset and restarted.

[0072] 6) The terminal 20 may also maintain [main circuit ON / WUR ON] and periodically determine whether the WUR is in the service area or outside the service area. In addition, when the conditions that the WUR is in the service area and migrates to [main circuit OFF / WUR ON] are met, it may migrate to [main circuit OFF / WUR ON], or it may report to the base station 10 that it has migrated to [main circuit OFF / WUR ON].

[0073] Through the above-mentioned operation 1), the terminal 20 can make the transition from [main circuit ON / WUR OFF] to [main circuit OFF / WURON]. The base station 10 can make the terminal 20 transition from [main circuit ON / WUR OFF] to [main circuit OFF / WURON].

[0074] Next, the operation 2) in which the operation in state 4 or state 6 [main circuit ON / WUR ON] can also be specified will be described.

[0075] When the terminal 20 is in the state of [main circuit ON / WUR ON], it is possible to execute any one or more combinations of 1) to 4) shown below.

[0076] 1) Determine whether the WUR is within or outside the service area.

[0077] 2) Monitor signal quality.

[0078] 3) Report the measurement result to the base station 10.

[0079] 4) Execute part of the action of the main circuit in state 3 or state 5 [main circuit ON / WUR OFF] through WUR. For example, WUR can be used to monitor the paging channel and / or obtain system information. Notifications to WUR such as P-RNTI (Paging Radio Network Temporary Identifier) ​​over WUR can also be specified. For example, WUR can be used to perform adjacent cell measurements. For example, if the cell of the main circuit overlaps with the cell coverage of WUR, WUR can be used to perform adjacent cell measurements.

[0080] In addition, the actions in state 3 (RRC_IDLE) may be, for example, the actions shown below.

[0081] UE-specific DRX set by higher layers

[0082] Mobility control based on network settings

[0083] Monitoring of short messages sent using P-RNTI over DCI

[0084] Monitoring of the paging channel for CN (Core Network) paging using 5G-S-TMSI (5G System Temporary Mobile Subscription Identifier)

[0085] Neighboring cell measurement and cell selection or cell reselection

[0086] · Acquisition of system information and sending of system information request (SI request) when setting

[0087] Perform available measurements and log location and time for UEs that have configured logged measurements

[0088] In addition, the actions in state 5 (RRC_CONNECTED) may be, for example, the actions shown below.

[0089] Maintain AS (Access Stratum) context

[0090] UE-specific DRX configured in lower layers

[0091] In UEs supporting CA, the use of one or more SCells aggregated with SpCells to expand bandwidth

[0092] In UEs supporting DC, use of SCG aggregated with MCG to expand bandwidth

[0093] Network-controlled mobility within NR and to / from E-UTRA

[0094] Monitoring of short messages sent using P-RNTI over DCI

[0095] Monitoring of control channels associated with the shared channel used to decide whether data is scheduled

[0096] ·Provision of channel quality and feedback information

[0097] Neighboring cell measurements and reporting of measurement results

[0098] · Obtaining system information

[0099] · Execution of immediate MDT (immediate Minimization of Drive Tests) and reporting of available positions

[0100] Through the above-mentioned action 2), the terminal 20 can determine the action related to WUR in the case of [main circuit ON / WUR ON].

[0101] Next, operation 3) is described in which a condition for transitioning from state 4 or state 6 [main circuit ON / WUR ON] to state 2 [main circuit OFF / WUR ON] may be specified.

[0102] The transition condition from state 4 [main circuit ON (idle) / WUR ON] to state 2 [main circuit OFF / WUR ON] may be when any one or more of the following conditions 1) to 6) are satisfied.

[0103] Condition 1) In state 4 [main circuit ON (idle) / WUR ON], the timer that was triggered to start in the last paging reception has expired or has expired.

[0104] Condition 2) In state 4 [main circuit ON (idle) / WUR ON], a timer that was triggered to start when the measured RSRP (Reference signal received power) value becomes greater than a threshold has expired or has expired.

[0105] Condition 3) In state 4 [main circuit ON (idle) / WUR ON], a transition indication based on paging or PEI (Paging early indication) is received.

[0106] Condition 4) The timer that was triggered to start when transitioning to state 4 [Main circuit ON (idle) / WUR ON] has expired or has expired.

[0107] Condition 5) In state 4 [main circuit ON (idle) / WUR ON], it is determined that the WUR is in the service area. For example, the beacon reception accuracy (RSRP, etc.) is greater than a threshold.

[0108] Condition 6) In state 4 [main circuit ON (idle) / WUR ON], it is determined that the mobility is low.

[0109] In addition, the transition condition from state 3 [main circuit ON (idle) / WUR OFF] to state 2 [main circuit OFF / WUR ON] may be the case where any one or more of the following conditions 1) to 4) are satisfied.

[0110] Condition 1) In state 3 [main circuit ON (idle) / WUR OFF], the timer that was triggered to start in the last paging reception has expired or has expired.

[0111] Condition 2) In state 3 [main circuit ON (idle) / WUR OFF], a timer that was triggered to start when the measured RSRP (Reference signal received power) value becomes greater than a threshold has expired or has expired.

[0112] Condition 3) In state 3 [main circuit ON (idle) / WUR OFF], a transition indication based on paging or PEI (Paging early indication) is received.

[0113] Condition 4) The timer that was triggered to start when transitioning to state 3 [main circuit ON (idle) / WUR OFF] has expired or has expired.

[0114] The transition condition from state 6 [main circuit ON (connection) / WUR ON] to state 2 [main circuit OFF / WUR ON] may be when any one or more of the following conditions 1) to 6) are satisfied.

[0115] Condition 1) When the timer that was triggered to start when transitioning to state 6 [Main circuit ON (connection) / WUR ON] has expired or has expired.

[0116] Condition 2) In state 6 [main circuit ON (connection) / WUR ON], when an instruction is given from the base station 10 (for example, an instruction based on MAC-CE or DCI)

[0117] Condition 3) In state 6 [main circuit ON (connection) / WUR ON], the reception operation based on DRX is completed. In other words, the DRX inactivity timer (drx-inactivity timer) has expired or has expired.

[0118] Condition 4) In state 6 [main circuit ON (connection) / WUR ON], the state is transitioned to DRX. Or DRX is started.

[0119] Condition 5) In state 6 [main circuit ON (connection) / WUR ON], it is determined that the WUR is within the service area. For example, the beacon reception accuracy (RSRP, etc.) is greater than a threshold.

[0120] Condition 6) In state 6 [main circuit ON (connection) / WUR ON], it is determined that the mobility is low.

[0121] In addition, the transition condition from state 5 [main circuit ON (connection) / WUR OFF] to state 2 [main circuit OFF / WUR ON] may also satisfy any one or more of the following conditions 1) to 4).

[0122] Condition 1) When the timer that was triggered to start when transitioning to state 5 [Main circuit ON (connection) / WUR OFF] has expired or has expired.

[0123] Condition 2) In state 5 [main circuit ON (connection) / WUR OFF], when instructed from the base station 10 (for example, an instruction based on MAC-CE or DCI)

[0124] Condition 3) In state 5 [main circuit ON (connection) / WUR OFF], the reception operation based on DRX is completed, that is, the DRX inactivity timer (drx-inactivity timer) expires.

[0125] Condition 4) In state 5 [main circuit ON (connection) / WUR OFF], the state is transitioned to DRX. Or DRX is started.

[0126] Through the above-mentioned operation 3), the terminal 20 can transition from state 4 or state 6 [main circuit ON / WURON] to state 2 [main circuit OFF / WURON] according to the communication status.

[0127] Hereinafter, operation 4) may also be described as stipulating conditions for transition from state 2 [main circuit OFF / WUR ON] to state 4 or state 6 [main circuit ON / WUR ON].

[0128] The transition condition from state 2 [main circuit OFF / WUR ON] to state 4 [main circuit ON (idle) / WUR ON] may be when any one or more of the following conditions 1) to 4) are satisfied.

[0129] Condition 1) In state 2 [Main circuit OFF / WUR ON], WUR receives WUS (Wake-up signal).

[0130] Condition 2) In state 2 [main circuit OFF / WUR ON], WUR does not receive WUS within a predetermined period.

[0131] Condition 3) Data transmission occurs in state 2 [main circuit OFF / WUR ON].

[0132] Condition 4) In state 2 [main circuit OFF / WUR ON], the WUR cannot receive the beacon signal within a predetermined period, or the reception quality of the beacon signal is below a threshold.

[0133] The transition condition from state 2 [main circuit OFF / WUR ON] to state 6 [main circuit ON (connection) / WUR ON] may be when any one or more of the following conditions 1) to 5) are satisfied.

[0134] Condition 1) Data transmission occurs in state 2 [Main circuit OFF / WUR ON].

[0135] Condition 2) In state 2 [main circuit OFF / WUR ON], WUR receives WUS.

[0136] Condition 3) In state 2 [main circuit OFF / WUR ON], WUR does not receive WUS within a predetermined period and transitions to idle state due to expiration of a timer.

[0137] Condition 4) In state 2 [main circuit OFF / WUR ON], the WUR cannot receive the beacon signal within a predetermined period, or the reception quality of the beacon signal is below a threshold.

[0138] Condition 5) When TA (Timing Advance) synchronization is maintained in State 2 [Main Circuit OFF / WUR ON].

[0139] In addition, the transition condition from state 2 [main circuit OFF / WUR ON] to state 3 [main circuit ON (idle) / WUR OFF] may be the same as the transition condition from state 2 [main circuit OFF / WUR ON] to state 4 [main circuit ON (idle) / WUR ON]. Whether to transition from state 2 to state 3 or from state 2 to state 4 may be regulated by the specification or may be set by the base station 10.

[0140] In addition, the transition condition from state 2 [main circuit OFF / WUR ON] to state 5 [main circuit ON (connection) / WUR OFF] may be the same as the transition condition from state 2 [main circuit OFF / WUR On] to state 6 [main circuit ON (connection) / WUR ON]. Whether to transition from state 2 to state 5 or from state 2 to state 6 may be regulated by the specification or may be set by the base station 10.

[0141] In addition, it is also possible to set whether to transition from state 2 to state 3 or state 5, or from state 2 to state 4 or state 6 according to each transition condition. For example, it is also possible to transition from state 2 to state 3 or state 5 when a beacon signal cannot be received, and to transition from state 2 to state 4 or state 6 when a WUS is received.

[0142] Through the above-mentioned operation 4), the terminal 20 can transition from state 2 [main circuit OFF / WUR On] to state 4 or state 6 [main circuit ON / WUR ON] according to the communication status.

[0143] Next, action 5) is described in which the terminal 20 may report the UE capability related to state 4 or state 6 [main circuit ON / WURON] to the base station 10.

[0144] The terminal 20 may be equipped with a WUR and report to the base station 10 the UE capability indicating whether it can cope with the actions related to state 4 or state 6 [main circuit ON / WUR ON].

[0145] For example, the terminal 20 may report to the base station 10 whether the UE capability of state 4 or state 6, ie, simultaneous operation of the main circuit and the WUR, is supported.

[0146] For example, the terminal 20 may also report to the base station 10 in state 4 or state 6 the UE capability indicating whether a predetermined action of a part of the main circuit can be performed through the WUR.

[0147] In addition, the terminal 20 may also report the above UE capabilities as the UE capabilities of the terminal 20. In addition, the terminal 20 may also report the above UE capabilities in all frequencies. In addition, the terminal 20 may also report the above UE capabilities per frequency. In addition, the terminal 20 may also report the above UE capabilities per FR (Frequency range). In addition, the terminal 20 may also report the above UE capabilities in a duplex mode.

[0148] According to the above-described embodiment, the terminal 20 can appropriately control the main receiver and the wake-up receiver and reduce power consumption by performing state transition according to the communication situation.

[0149] That is, it is possible to control a simple receiver and a main receiver of a terminal mounted in a wireless communication system.

[0150] (Device Structure)

[0151] Next, the functional configuration examples of the base station 10 and the terminal 20 that perform the above-described processing and operations are described. The base station 10 and the terminal 20 include functions for implementing the above-described embodiments. However, the base station 10 and the terminal 20 may each include only a part of the functions in the embodiments.

[0152] <Base station 10>

[0153] Figure 5 FIG. 1 is a diagram showing an example of a functional configuration of a base station 10 in an embodiment of the present invention. Figure 5 As shown, the base station 10 includes a transmission unit 110 , a reception unit 120 , a setting unit 130 , and a control unit 140 . Figure 5 The functional configuration shown is only an example, and any functional division and name of the functional unit may be used as long as the operation involved in the embodiment of the present invention can be performed.

[0154] The transmitting unit 110 includes a function of generating a signal to be sent to the terminal 20 side and wirelessly transmitting the signal. In addition, the transmitting unit 110 sends network node messages to other network nodes. The receiving unit 120 includes a function of receiving various signals sent from the terminal 20 and obtaining, for example, higher layer information from the received signals. In addition, the transmitting unit 110 has a function of sending NR-PSS, NR-SSS, NR-PBCH, DL / UL control signals, etc. to the terminal 20. In addition, the receiving unit 120 receives network node messages from other network nodes.

[0155] The setting unit 130 stores preset setting information and various setting information transmitted to the terminal 20. The content of the setting information is, for example, information related to the setting of WUR.

[0156] As described in the embodiment, the control unit 140 performs control related to the setting of the WUR. In addition, the control unit 140 performs scheduling. The functional unit related to signal transmission in the control unit 140 may be included in the transmission unit 110, and the functional unit related to signal reception in the control unit 140 may be included in the reception unit 120.

[0157] <Terminal 20>

[0158] Figure 6 FIG. 2 is a diagram showing an example of a functional configuration of the terminal 20 in the embodiment of the present invention. Figure 6 As shown, the terminal 20 includes a transmitting unit 210 , a receiving unit 220 , a setting unit 230 , and a control unit 240 . Figure 6 The functional configuration shown is only an example, and any functional division and name of the functional unit may be used as long as the operation involved in the embodiment of the present invention can be performed.

[0159] The transmitting unit 210 generates a transmission signal according to the transmission data, and transmits the transmission signal wirelessly. The receiving unit 220 receives various signals wirelessly, and obtains a higher layer signal from the received physical layer signal. In addition, the receiving unit 220 has a function of receiving NR-PSS, NR-SSS, NR-PBCH, DL / UL / SL control signals, etc. transmitted from the base station 10. And for example, as D2D communication, the transmitting unit 210 transmits PSCCH (Physical Sidelink Control Channel), PSSCH (Physical Sidelink Shared Channel), PSDCH (Physical Sidelink Discovery Channel), PSBCH (Physical Sidelink Broadcast Channel), etc. to other terminals 20, and the receiving unit 220 receives PSCCH, PSSCH, PSDCH or PSBCH, etc. from other terminals 20. In addition, the terminal 20 may also have both a receiving unit that becomes a wake-up receiver and a receiving unit that becomes a main receiver.

[0160] The setting unit 230 stores various setting information received by the receiving unit 220 from the base station 10. In addition, the setting unit 230 also stores pre-set setting information. The content of the setting information is, for example, information related to the setting of WUR.

[0161] As described in the embodiment, the control unit 240 performs control related to the setting of WUR. The functional unit related to signal transmission in the control unit 240 may be included in the transmission unit 210, and the functional unit related to signal reception in the control unit 240 may be included in the reception unit 220.

[0162] (Hardware Structure)

[0163] The block diagram used in the description of the above embodiment ( Figure 5 and Figure 6 ) shows blocks in units of functions. These functional blocks (structural parts) are implemented by any combination of at least one of hardware and software. In addition, there is no particular limitation on the implementation method of each functional block. That is, each functional block can be implemented using a device that is physically or logically combined, or two or more physically or logically separated devices can be directly or indirectly connected (for example, using wires, wirelessly, etc.) and implemented using these multiple devices. The functional blocks can also be implemented by combining software in the above-mentioned one device or the above-mentioned multiple devices.

[0164] Functions include judging, determining, judging, calculating, calculating, processing, deriving, investigating, searching, confirming, receiving, sending, outputting, accessing, solving, selecting, selecting, establishing, comparing, assuming, expecting, regarding, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but are not limited to these. For example, a functional block (constituent unit) that enables the sending function is called a transmitting unit or a transmitter. In short, as mentioned above, there is no particular limitation on the implementation method.

[0165] For example, the base station 10 , the terminal 20 , and the like in one embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. Figure 7 1 is a diagram showing an example of a hardware structure of a base station 10 and a terminal 20 involved in one embodiment of the present disclosure. The base station 10 and the terminal 20 may also be configured as a computer device that physically includes 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, and the like.

[0166] In the following description, the word "device" may be replaced by "circuit", "device", "unit", etc. The hardware configuration of the base station 10 and the terminal 20 may include one or more of the devices shown in the figure, or may exclude some of the devices.

[0167] Each function in the base station 10 and the terminal 20 is implemented by the following method: predetermined software (program) is read into hardware such as the processor 1001 and the storage device 1002, so that the processor 1001 performs calculations and controls the communication of the communication device 1004 or controls at least one of the reading and writing of data in the storage device 1002 and the auxiliary storage device 1003.

[0168] The processor 1001 controls the entire computer by, for example, operating an operating system. The processor 1001 may also be composed of a central processing unit (CPU) including an interface with peripheral devices, a control device, a computing device, registers, etc. For example, the control unit 140, the control unit 240, etc. may also be implemented by the processor 1001.

[0169] In addition, the processor 1001 reads a program (program code), a software module, or data from at least one of the auxiliary storage device 1003 and the communication device 1004 to the storage device 1002, and performs various processes accordingly. As a program, a program that causes the computer to execute at least a part of the actions described in the above embodiments is used. For example, Figure 5 The control unit 140 of the base station 10 shown may also be implemented by a control program stored in the storage device 1002 and executed in the processor 1001. For example, Figure 6 The control unit 240 of the terminal 20 shown can also be implemented by a control program stored in the storage device 1002 and operated in the processor 1001. Although it is described that the above-mentioned various processes are performed by one processor 1001, the above-mentioned various processes can also be performed simultaneously or sequentially by more than two processors 1001. The processor 1001 can also be implemented by more than one chip. In addition, the program can also be sent from the network via a telecommunication line.

[0170] The storage device 1002 is a computer-readable recording medium, and may be composed of at least one of ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), etc. The storage device 1002 may also be referred to as a register, a cache, a main memory (main storage device), etc. The storage device 1002 can store executable programs (program codes), software modules, etc. for implementing the communication method involved in one embodiment of the present disclosure.

[0171] The auxiliary storage device 1003 is a computer-readable recording medium, and may be composed of at least one of an optical disk such as a CD-ROM (CompactDisc ROM), a hard disk drive, a floppy disk, a magneto-optical disk (e.g., a compact disk, a digital versatile disk, a Blu-ray (registered trademark) disk, a smart card, a flash memory (e.g., a card, a stick, a key drive), a Floppy (registered trademark) disk, a magnetic strip, etc. The above-mentioned storage medium may be, for example, a database, a server, and other appropriate media including at least one of the storage device 1002 and the auxiliary storage device 1003.

[0172] The communication device 1004 is hardware (transceiver device) for communicating between computers via at least one of a wired network and a wireless network, and may also be referred to as a network device, a network controller, a network card, a communication module, etc. The communication device 1004 may also be configured to include, for example, a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc., to implement at least one of frequency division duplex (FDD: Frequency Division Duplex) and time division duplex (TDD: Time Division Duplex). For example, a transceiver antenna, an amplifier, a transceiver, a transmission path interface, etc. may also be implemented by the communication device 1004. The transceiver may also be implemented by physically or logically separating the transmitter and the receiver.

[0173] The input device 1005 is an input device that receives input from the outside (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.). The output device 1006 is an output device that implements output to the outside (e.g., a display, a speaker, an LED light, etc.). In addition, the input device 1005 and the output device 1006 may also be integrally formed (e.g., a touch panel).

[0174] In addition, the processor 1001 and the storage device 1002 and other devices are connected via a bus 1007 for communicating information. The bus 1007 may be configured by a single bus or may be configured by different buses between devices.

[0175] In addition, the base station 10 and the terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), or an FPGA (Field Programmable Gate Array), and a part or all of each functional block may be implemented by the hardware. For example, the processor 1001 may also be implemented using at least one of these hardware.

[0176] Figure 8 FIG. 2 shows a structural example of a vehicle 2001. Figure 8 As shown, the vehicle 2001 includes a driving unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, front wheels 2007, rear wheels 2008, an axle 2009, an electronic control unit 2010, various sensors 2021 to 2029, an information service unit 2012, and a communication module 2013. Each mode / embodiment described in the present disclosure may also be applied to a communication device mounted on the vehicle 2001, for example, may also be applied to the communication module 2013.

[0177] The driving unit 2002 is composed of, for example, an engine, a motor, or a hybrid of an engine and a motor. The steering unit 2003 includes at least a steering wheel (also referred to as a steering wheel), 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 a user.

[0178] The electronic control unit 2010 is composed of a microprocessor 2031, a memory (ROM, RAM) 2032, and a communication port (IO port) 2033. Signals from various sensors 2021 to 2029 included in the vehicle 2001 are input to the electronic control unit 2010. The electronic control unit 2010 may also be referred to as an ECU (Electronic Control Unit).

[0179] As signals from various sensors 2021 to 2029, there are current signals from the current sensor 2021 for monitoring the current of the motor, speed signals of the front wheels or rear wheels obtained by the speed sensor 2022, air pressure signals of the front wheels or rear wheels obtained by the air pressure sensor 2023, vehicle speed signals obtained by the vehicle speed sensor 2024, acceleration signals obtained by the acceleration sensor 2025, accelerator pedal depression amount signals obtained by the accelerator pedal sensor 2029, brake pedal depression amount signals obtained by the brake pedal sensor 2026, shift lever operation signals obtained by the shift lever sensor 2027, detection signals for detecting obstacles, vehicles, pedestrians, etc. obtained by the object detection sensor 2028, and the like.

[0180] The information service unit 2012 is composed of various devices such as a car navigation system, an audio system, a speaker, a television, a radio, etc., for providing (outputting) various information such as driving information, traffic information, and entertainment information, and one or more ECUs for controlling these devices. The information service unit 2012 uses information obtained from an external device via the communication module 2013, etc. to provide various multimedia information and multimedia services to passengers of the vehicle 2001. The information service unit 2012 may include an input device (such as a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, etc.) for receiving input from the outside, and may also include an output device (such as a display, a speaker, an LED light, a touch panel, etc.) for implementing output to the outside.

[0181] The driving assistance system unit 2030 is composed of various devices for preventing accidents or reducing the driver's driving load, such as millimeter wave radar, LiDAR (Light Detection and Ranging), camera, positioning device (such as GNSS, etc.), map information (such as high-definition (HD) map, autonomous driving vehicle (AV) map, etc.), gyroscope system (such as IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence) chip, AI processor, and one or more ECUs that control these devices. In addition, the driving assistance system unit 2030 sends and receives various information via the communication module 2013 to realize the driving assistance function or the autonomous driving function.

[0182] The communication module 2013 can communicate with the microprocessor 2031 and the components of the vehicle 2001 via the communication port. For example, the communication module 2013 can send and receive data with the drive unit 2002, the steering unit 2003, the accelerator pedal 2004, the brake pedal 2005, the shift lever 2006, the front wheel 2007, the rear wheel 2008, the axle 2009, the microprocessor 2031 in the electronic control unit 2010, the memory (ROM, RAM) 2032, and the sensors 2021 to 29 via the communication port 2033.

[0183] The communication module 2013 can be controlled by the microprocessor 2031 of the electronic control unit 2010, and is a communication device that can communicate with an external device. For example, various information can be sent and received with the external device via wireless communication. The communication module 2013 can be located inside or outside the electronic control unit 2010. The external device can also be, for example, a base station, a mobile station, etc.

[0184] The communication module 2013 may also transmit at least one of the signals from the various sensors 2021-2028 input to the electronic control unit 2010, the information obtained based on the signals, and the information based on the input from the outside (user) obtained via the information service unit 2012 to an external device via wireless communication. The electronic control unit 2010, the various sensors 2021-2028, the information service unit 2012, etc. may also be referred to as an input unit that receives input. For example, the PUSCH transmitted by the communication module 2013 may include information based on the above input.

[0185] The communication module 2013 receives various information (traffic information, signal information, vehicle-to-vehicle information, etc.) sent from an external device and displays it on the information service unit 2012 of the vehicle 2001. The information service unit 2012 may also be referred to as an output unit that outputs information (for example, outputs information to a display, a speaker, etc. based on the PDSCH received by the communication module 2013 (or data / information decoded from the PDSCH)). In addition, the communication module 2013 stores various information received from the external device in the memory 2032 that can be used by the microprocessor 2031. The microprocessor 2031 may also control the drive unit 2002, the steering unit 2003, the accelerator pedal 2004, the brake pedal 2005, the gear lever 2006, the front wheel 2007, the rear wheel 2008, the axle 2009, the sensors 2021 to 2029, etc. of the vehicle 2001 based on the information stored in the memory 2032.

[0186] (Summary of Implementation Methods)

[0187] As described above, according to an embodiment of the present invention, a terminal is provided, wherein the terminal comprises: a first receiving unit, which receives a first signal from a base station; a second receiving unit, which receives a second signal from the base station with a power consumption smaller than that of the first receiving unit; and a control unit, which respectively activates or deactivates the first receiving unit and the second receiving unit, wherein when the first receiving unit is activated and the second receiving unit is deactivated, the control unit deactivates the first receiving unit after activating the second receiving unit.

[0188] According to the above configuration, the terminal 20 can appropriately control the main receiver and the wake-up receiver and reduce power consumption by performing state transition according to the communication status. In other words, it is possible to control a simple receiver and the main receiver of the terminal installed in the wireless communication system.

[0189] Alternatively, the first receiving unit may receive an instruction from the base station requesting a report indicating whether the second receiving unit is in a service area or outside a service area, the control unit may determine whether the second receiving unit is in a service area or outside a service area, the terminal may further include a sending unit, the sending unit may send the result of the determination to the base station, the first receiving unit may receive an instruction from the base station to deactivate the first receiving unit and activate the second receiving unit, and the control unit may deactivate the first receiving unit and activate the second receiving unit. According to this configuration, the terminal 20 can appropriately control the main receiver and the wake-up receiver and reduce power consumption by performing a state transition corresponding to the communication status.

[0190] The control unit may also determine whether the second receiving unit is in the service area or outside the service area, and when the second receiving unit is in the service area and the transition condition is satisfied, deactivate the first receiving unit and activate the second receiving unit. According to this configuration, the terminal 20 can appropriately control the main receiver and the wake-up receiver and reduce power consumption by performing state transition corresponding to the communication status.

[0191] The transition condition may also be that when the first receiving unit is in the idle state, a timer that is triggered to start when transitioning to the idle state expires or has expired. According to this configuration, the terminal 20 can appropriately control the main receiver and the wake-up receiver and reduce power consumption by performing state transition corresponding to the communication status.

[0192] The transition condition may be that the DRX inactivity timer expires or has expired when the first receiving unit is in the connected state. According to this configuration, the terminal 20 can appropriately control the main receiver and the wake-up receiver and reduce power consumption by performing state transition according to the communication status.

[0193] In addition, according to an embodiment of the present invention, a communication method is provided, wherein the following steps are performed by a terminal: a first receiving step of receiving a first signal from a base station; a second receiving step of receiving a second signal from the base station with a power consumption less than that of the first receiving step; a control step of activating or deactivating the first receiving step and the second receiving step, respectively; and when the first receiving step is activated and the second receiving step is deactivated, after activating the second receiving step, deactivating the first receiving step.

[0194] According to the above configuration, the terminal 20 can appropriately control the main receiver and the wake-up receiver and reduce power consumption by performing state transition according to the communication status. In other words, it is possible to control a simple receiver and the main receiver of the terminal installed in the wireless communication system.

[0195] (Supplementary Implementation Methods)

[0196] The above is a description of the embodiments of the present invention, but the disclosed invention is not limited to such an embodiment, and those skilled in the art should understand various variations, modifications, substitutions, replacements, etc. In order to facilitate the understanding of the invention, specific numerical examples are used for description, but unless otherwise specified, these numerical values ​​are only examples, and any appropriate value may also be used. The item distinction in the above description is not essential to the present invention, and the items recorded in more than two items can be combined and used as needed, and the items recorded in a certain item can be applied to the items recorded in another item (as long as there is no contradiction). The boundaries of the functional units or processing units in the functional block diagram do not necessarily correspond to the boundaries of the physical components. The actions of multiple functional units can be performed by one physical component, or the actions of one functional unit can be performed by multiple physical components. Regarding the processing steps described in the embodiment, the order of processing can be swapped if there is no contradiction. In order to facilitate the description of the processing, the base station 10 and the terminal 20 are described using a functional block diagram, but such a device can also be implemented by hardware, software, or a combination thereof. The software that operates according to the implementation mode of the present invention through the processor of the base station 10 and the software that operates according to the implementation mode of the present invention through the processor of the terminal 20 can also 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 and any other appropriate storage medium.

[0197] In addition, the notification of information is not limited to the form / implementation method described in the present disclosure, and other methods may also be used. For example, the notification of information may be implemented through physical layer signaling (e.g., DCI (Downlink Control Information), UCI (Uplink Control Information)), upper layer signaling (e.g., RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals or a combination thereof. In addition, RRC signaling may also be referred to as an RRC message, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, etc.

[0198] Each form / embodiment described in the present disclosure may also be applied to at least one of a system using LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), FRA (Future Radio Access), NR (New Radio), 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 802.20, UWB (Ultra-WideBand), Bluetooth (registered trademark), other appropriate systems, and a next-generation system extended therefrom. In addition, a combination of a plurality of systems (for example, a combination of at least one of LTE and LTE-A with 5G, etc.) may be applied.

[0199] The processing steps, timing, and flow of each form / implementation described in this specification may be reversed in order if there is no contradiction. For example, the method described in this disclosure uses the order of examples to indicate the elements of various steps, but is not limited to the specific order indicated.

[0200] In this specification, specific actions performed by the base station 10 are sometimes also performed by its upper node according to the situation. In a network composed of one or more network nodes having the base station 10, various actions performed for communicating with the terminal 20 can be performed by at least one of the base station 10 and other network nodes other than the base station 10 (for example, MME or S-GW, etc., but not limited to these). In the above, the case where there is one other network node other than the base station 10 is illustrated, but the other network node may also be a combination of multiple other network nodes (for example, MME and S-GW).

[0201] The information or signals described in the present disclosure can be output from a higher layer (or a lower layer) to a lower layer (or a higher layer), and can also be input or output via a plurality of network nodes.

[0202] The input or output information can be stored in a specific location (e.g., a memory) or managed using a management table. The input or output information can be rewritten, updated, or appended. The output information can also be deleted. The input information can also be sent to other devices.

[0203] The determination in the present disclosure may be performed by a value represented by 1 bit (0 or 1), by a Boolean value (Boolean: true or false), or by comparison of numerical values ​​(for example, comparison with a predetermined value).

[0204] Software, whether referred to as software, firmware, middleware, microcode, hardware description language, or by other names, shall be interpreted broadly to refer to commands, sets of commands, codes, code segments, program codes, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, etc.

[0205] In addition, software, commands, information, etc. may also be sent and received via a transmission medium. For example, when software is sent from a web page, server, or other remote source using at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and wireless technology (infrared, microwave, etc.), at least one of these wired technology and wireless technology is included in the definition of transmission medium.

[0206] The information, signals, etc. described in the present disclosure may also be represented by any of a variety of different technologies. For example, the data, commands, instructions, information, signals, bits, symbols, chips, etc. that may be involved in the above description as a whole may also be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any combination of these.

[0207] In addition, the terms described in the present disclosure and the terms required for understanding the present disclosure may also be replaced with terms having the same or similar meanings. For example, at least one of a channel and a symbol may also be a signal (signaling). In addition, a signal may also be a message. In addition, a component carrier (CC) may also be referred to as a carrier frequency, a cell, a frequency carrier, etc.

[0208] As used in this disclosure, the terms "system" and "network" are used interchangeably.

[0209] In addition, the information, parameters, etc. described in the present disclosure may be represented by absolute values, relative values ​​to predetermined values, or other corresponding information. For example, wireless resources may also be indicated by indexes.

[0210] The names used for the above parameters are non-restrictive in any respect. Furthermore, the formulas etc. using these parameters may sometimes differ from those explicitly disclosed in the present disclosure. Various channels (e.g., PUCCH, PDCCH, etc.) and information elements may be identified by all appropriate names, and therefore the various names assigned to these various channels and information elements are non-restrictive in any respect.

[0211] In the present disclosure, the terms "base station (BS)", "wireless base station", "base station device", "fixed station", "NodeB", "eNodeB (eNB)", "gNodeB (gNB)", "access point", "transmission point", "reception point", "transmission / reception point", "cell", "sector", "cell group", "carrier", "component carrier" and the like are used interchangeably. Sometimes, the base station is also referred to as macro cell, small cell, femto cell, pico cell and the like.

[0212] A base station can accommodate one or more (for example, 3) 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 also provide communication services through a base station subsystem (for example, a small base station RRH: Remote Radio Head for indoor use). Terms such as "cell" or "sector" refer to a part or the entirety of the coverage area of ​​at least one of the base station and the base station subsystem that provide communication services within the coverage area.

[0213] In the present disclosure, the base station sending information to the terminal may also be replaced by the base station instructing the terminal to perform a control / action based on the information.

[0214] In the present disclosure, terms such as “mobile station (MS)”, “user terminal (user terminal)”, “user equipment (UE)”, and “terminal” can be used interchangeably.

[0215] For mobile stations, those skilled in the art sometimes also use the following terms: 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, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other appropriate terms.

[0216] At least one of the base station and the mobile station may also be referred to as a transmitting device, a receiving device, a communication device, etc. In addition, at least one of the base station and the mobile station may also be a device mounted on a mobile body, the mobile body itself, etc. The mobile body refers to an object that can move, and the moving speed is arbitrary. In addition, of course, it also includes the case where the mobile body stops. The mobile body includes, for example, vehicles, transport vehicles, cars, motorcycles, bicycles, connected cars, shovel cars, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, trailers (rear cars), rickshaws, ships (ships and other watercraft), airplanes, rockets, artificial satellites, drones (registered trademark), multi-rotor helicopters (multicopters), quadcopters (quadcopters), balloons and objects mounted on them, and are not limited to these. In addition, the mobile body may also be a mobile body that drives autonomously based on operating instructions. It can be a means of transportation (such as a car, airplane, etc.), a mobile body that moves in an unmanned manner (such as a drone, an autonomous car, etc.), or a robot (manned or unmanned). In addition, at least one of the base station and the mobile station also includes a device that does not necessarily move during communication. For example, at least one of the base station and the mobile station can be an IoT (Internet of Things) device such as a sensor.

[0217] In addition, the base station in the present disclosure may also be replaced by a user terminal. For example, a structure in which the communication between a base station and a user terminal is replaced by the communication between multiple terminals 20 (for example, it may also be referred to as D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.) may also apply various forms / implementations of the present disclosure. In this case, it may also be configured that the terminal 20 has the functions possessed by the above-mentioned base station 10. In addition, terms such as "uplink" and "downlink" may also be replaced by terms corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. may also be replaced by side channels.

[0218] Likewise, the user terminal in the present disclosure may also be replaced by a base station. In this case, the base station may also have the functions of the user terminal.

[0219] The terms "determining" and "determining" used in the present disclosure sometimes also include a variety of actions. "Determining" and "determining" may include, for example, considering matters that have been judged, calculated, calculated, processed, derived, investigated, searched (for example, searched in a table, database or other data structure), confirmed (ascertaining) as matters that have been "determined" or "determined", etc. In addition, "determining" and "determining" may include matters that have been received (for example, receiving information), transmitted (for example, transmitting information), input, output, accessed (for example, accessing data in a memory) as matters that have been "determined" or "determined", etc. In addition, "determining" and "determining" may include matters that have been resolved (resolving), selected (selecting), chosen (choosing), established (establishing), compared (comparing), etc. as matters that have been "determined" or "determined". That is, "judgment" and "decision" may include certain actions that are considered to be "judged" or "decided". In addition, "judgment (decision)" may also be replaced by "assuming", "expecting", "considering", etc.

[0220] The terms "connected", "coupled" or all variations of these terms are intended to indicate any direct or indirect connection or combination 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 combination or connection between elements may be a physical combination or connection, a logical combination or connection, or a combination of these. For example, "access" may be used instead of "connection". In the context of the present disclosure, two elements may be considered to be "connected" or "coupled" to each other using at least one of one or more wires, cables, and printed electrical connections, and as some non-limiting and non-inclusive examples, electromagnetic energy having wavelengths in the wireless frequency domain, microwave region, and light (including both visible and invisible) region may be used to "connect" or "couple" to each other.

[0221] The reference signal may be referred to as RS (Reference Signal) for short, or may be referred to as a pilot signal (Pilot) according to the applied standard.

[0222] The phrase "according to" used in the present disclosure does not mean "only according to" unless otherwise expressly stated. In other words, the phrase "according to" means both "only according to" and "at least according to".

[0223] Any reference to an element using the designations "first," "second," etc. used in this disclosure does not necessarily limit the number or order of these elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Therefore, a reference to a first element and a second element does not mean that only two elements can be taken or that the first element must precede the second element in any form.

[0224] The “unit” in the configuration of each of the above-mentioned devices may be replaced with a “section”, “circuit”, “device” or the like.

[0225] When the terms "include", "including" and their variations are used in the present disclosure, these terms are intended to be inclusive like the term "comprising". Furthermore, the term "or" used in the present disclosure does not mean an exclusive or.

[0226] A radio frame may be composed of one or more frames in the time domain. In the time domain, one or more frames may be referred to as a subframe. A subframe may also be composed of one or more time slots in the time domain. A subframe may also be a fixed time length (e.g., 1 ms) that is independent of a numerology.

[0227] A parameter set may be a communication parameter applied to at least one of the transmission and reception of a certain signal or channel. The parameter set may, for example, represent at least one of subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame structure, specific filtering processing performed by the transceiver in the frequency domain, specific windowing processing performed by the transceiver in the time domain, and the like.

[0228] A slot may be composed of one or more symbols (OFDM (Orthogonal Frequency Division Multiplexing) symbols, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbols, etc.) in the time domain. A slot may be a time unit based on a parameter set.

[0229] A time slot may contain multiple mini-slots. Each mini-slot may be composed of one or more symbols in the time domain. In addition, a mini-slot may also be referred to as a sub-slot. A mini-slot may be composed of fewer symbols than a time slot. A PDSCH (or PUSCH) transmitted in units of time greater than a mini-slot may be referred to as a PDSCH (or PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a mini-slot may be referred to as a PDSCH (or PUSCH) mapping type B.

[0230] A radio frame, a subframe, a time slot, a mini-time slot, and a symbol all represent time units for transmitting signals. A radio frame, a subframe, a time slot, a mini-time slot, and a symbol may be referred to by other corresponding names.

[0231] For example, one subframe may be referred to as a transmission time interval (TTI), multiple consecutive subframes may be referred to as a TTI, and one time slot or one mini time slot may be referred to as a TTI. That is, at least one of a subframe and a TTI may be a subframe (1ms) in existing LTE, a period shorter than 1ms (e.g., 1-13 symbols), or a period longer than 1ms. In addition, the unit representing a TTI may be referred to as a time slot, a mini time slot, etc. instead of a subframe.

[0232] Here, TTI refers to, for example, the minimum time unit for scheduling in wireless communication. For example, in the LTE system, the base station performs scheduling to allocate wireless resources (frequency bandwidth, transmission power, etc. that can be used in each terminal 20) to each terminal 20 in units of TTI. In addition, the definition of TTI is not limited to this.

[0233] TTI can be a transmission time unit of data packets (transport blocks), code blocks, code words, etc. after channel coding, or a processing unit such as scheduling and link adaptation. In addition, when TTI is given, the time interval (e.g., the number of symbols) to which the transport block, code block, code word, etc. is actually mapped can also be shorter than the TTI.

[0234] In addition, when one time slot or one mini time slot is called TTI, one or more TTIs (i.e., one or more time slots or one or more mini time slots) may also be the minimum time unit for scheduling. In addition, the number of time slots (mini time slots) constituting the minimum time unit for scheduling may also be controlled.

[0235] A TTI with a time length of 1 ms is also called a normal TTI (TTI in LTE Rel.8-12), a normal TTI, a long TTI, a normal subframe, a normal subframe, a long subframe, a time slot, etc. A TTI shorter than a normal TTI may also be called a shortened TTI, a short TTI, a partial or fractional TTI, a shortened subframe, a short subframe, a mini-time slot, a sub-time slot, a time slot, etc.

[0236] In addition, for a long TTI (for example, a normal TTI, a subframe, etc.), it can be understood as a TTI with a time length exceeding 1ms, and for a short TTI (for example, a shortened TTI, etc.), it can be understood as a TTI with a TTI length less than that of a long TTI (long TTI) and greater than 1ms.

[0237] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain. In the frequency domain, it may include one or more consecutive subcarriers. The number of subcarriers included in an RB may be the same regardless of the parameter set, for example, it may be 12. The number of subcarriers included in an RB may also be determined according to the parameter set.

[0238] In addition, the time domain of an RB may include one or more symbols, and may be the length of one slot, one mini slot, one subframe, or one TTI. One TTI, one subframe, etc. may be composed of one or more resource blocks, respectively.

[0239] In addition, one or more RBs may also be referred to as a physical resource block (PRB: Physical RB), a sub-carrier group (SCG: Sub-Carrier Group), a resource element group (REG: Resource Element Group), a PRB pair, an RB pair, etc.

[0240] In addition, 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.

[0241] A bandwidth part (BWP) (also referred to as partial bandwidth, etc.) may also represent a subset of contiguous common RBs (common resource blocks) for a parameter set in a carrier. Here, the common RBs may be identified by the index of the RBs relative to the common reference point of the carrier. PRBs may be defined in a BWP and numbered within the BWP.

[0242] 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.

[0243] At least one of the set BWPs may be active, and it is not assumed that the UE transmits or receives a predetermined signal / channel outside the activated BWP. In addition, "cell", "carrier" and the like in the present disclosure may be replaced with "BWP".

[0244] The above structures of radio frames, subframes, time slots, mini-time slots, and symbols are merely examples. For example, the number of subframes included in a radio frame, the number of time slots per subframe or radio frame, the number of mini-time slots included in a time slot, the number of symbols and RBs included in a time slot or mini-time slot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, and the cyclic prefix (CP) length may be changed in various ways.

[0245] In the present disclosure, when an article is added by translation, such as a, an, and the in English, for example, the present disclosure also includes the case where the noun following the article is in plural form.

[0246] In the present disclosure, the term "A and B are different" may mean "A and B are different from each other". In addition, the term may mean "A and B are different from C, respectively". The terms "separate" and "combined" may also be interpreted in the same way as "different".

[0247] Each form / implementation described in the present disclosure may be used alone or in combination, and may be switched depending on the execution. In addition, notification of scheduled information is not limited to being performed explicitly (e.g., notification of "yes X"), but may also be performed implicitly (e.g., notification of the scheduled information is not performed).

[0248] The present disclosure is described in detail above, but it should be clear to those skilled in the art that the present disclosure is not limited to the embodiments described in the present disclosure. The present disclosure can be implemented as a modification and variation without departing from the subject matter and scope of the present disclosure as determined by the claims. Therefore, the purpose of the description of the present disclosure is to illustrate and not to have any limiting meaning on the present disclosure.

[0249] Description of symbols

[0250] 10 Base Station

[0251] 110 Sending Department

[0252] 120 Receiving Department

[0253] 130 Setting Department

[0254] 140 Control Department

[0255] 20 Terminal

[0256] 210 Sending Department

[0257] 220 Receiving Department

[0258] 230 Setting Department

[0259] 240 Control Department

[0260] 1001 Processor

[0261] 1002 Storage Device

[0262] 1003 Auxiliary storage device

[0263] 1004 Communication device

[0264] 1005 Input Device

[0265] 1006 Output Device

Claims

1. A terminal, wherein: The terminal has: a first receiving unit configured to receive a first signal from a base station; a second receiving unit configured to receive a second signal from the base station with a power consumption smaller than that of the first receiving unit; as well as a control unit that activates or deactivates the first receiving unit and the second receiving unit, respectively; When the first receiving unit is activated and the second receiving unit is deactivated, the control unit activates the second receiving unit and then deactivates the first receiving unit.

2. The terminal according to claim 1, wherein: The first receiving unit receives, from the base station, an instruction requesting a report indicating whether the second receiving unit is in a service area or out of a service area, The control unit determines whether the second receiving unit is within the service area or outside the service area, The terminal further includes a transmitting unit configured to transmit the determination result to the base station. The first receiving unit receives an instruction from the base station to deactivate the first receiving unit and activate the second receiving unit, The control unit deactivates the first receiving unit and activates the second receiving unit.

3. The terminal according to claim 1, wherein: The control unit determines whether the second receiving unit is within a service area or outside a service area, and, if the second receiving unit is within the service area and a migration condition is satisfied, deactivates the first receiving unit and activates the second receiving unit.

4. The terminal according to claim 3, wherein: The transition condition is that, when the first receiving unit is in the idle state, a timer that is triggered to start when the first receiving unit transitions to the idle state expires or has expired.

5. The terminal according to claim 3, wherein: The transition condition is that, when the first receiving unit is in the connected state, a DRX inactivity timer (drx-inactivity timer) expires or has expired.

6. A communication method, wherein: The terminal performs the following steps: A first receiving step of receiving a first signal from a base station; a second receiving step of receiving a second signal from the base station with less power consumption than the first receiving step; A control step for activating or deactivating the first receiving step and the second receiving step respectively; as well as In a state where the first receiving step is activated and the second receiving step is deactivated, the first receiving step is deactivated after the second receiving step is activated.

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