WO2023209908A1 - Terminal et station de base - Google Patents

Terminal et station de base Download PDF

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Publication number
WO2023209908A1
WO2023209908A1 PCT/JP2022/019193 JP2022019193W WO2023209908A1 WO 2023209908 A1 WO2023209908 A1 WO 2023209908A1 JP 2022019193 W JP2022019193 W JP 2022019193W WO 2023209908 A1 WO2023209908 A1 WO 2023209908A1
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WO
WIPO (PCT)
Prior art keywords
terminal
base station
drx
positioning
reception
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Application number
PCT/JP2022/019193
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English (en)
Japanese (ja)
Inventor
康介 島
知也 小原
真哉 岡村
浩樹 原田
春陽 越後
Original Assignee
株式会社Ｎｔｔドコモ
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Publication date
Application filed by 株式会社Ｎｔｔドコモ filed Critical 株式会社Ｎｔｔドコモ
Priority to PCT/JP2022/019193 priority Critical patent/WO2023209908A1/fr
Publication of WO2023209908A1 publication Critical patent/WO2023209908A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to a terminal and a base station in a wireless communication system.
  • NR New Radio
  • LTE Long Term Evolution
  • a discontinuous reception (DRX) operation is defined in which the terminal periodically attempts to receive paging messages from the network (for example, Non-Patent Document 2).
  • DRX discontinuous reception
  • a terminal configured for discontinuous reception (DRX) operation may not be able to properly transmit or receive signals for positioning.
  • the present invention has been made in view of the above points, and an object of the present invention is to provide a technology that enables a terminal that performs intermittent reception to appropriately transmit or receive signals for positioning. do.
  • a communication unit that determines that signal transmission or signal reception for positioning cannot be performed due to restrictions on signal transmission and reception timing; a control unit that assumes that a message indicating that the signal transmission or the signal reception is not possible is transmitted from the base station to the network device; A terminal is provided.
  • a technology that allows a terminal that performs an intermittent reception operation to appropriately transmit or receive a signal for positioning.
  • FIG. 1 is a diagram for explaining a wireless communication system in an embodiment of the present invention.
  • FIG. 1 is a diagram for explaining a wireless communication system in an embodiment of the present invention.
  • FIG. 3 is a diagram for explaining the operation of a terminal.
  • FIG. 7 is a diagram for explaining an example of operation in the 0th embodiment.
  • FIG. 7 is a diagram for explaining an example of operation in the 0th embodiment.
  • FIG. 3 is a diagram for explaining an example of operation in the first embodiment.
  • FIG. 3 is a diagram for explaining an example of operation in the first embodiment.
  • FIG. 3 is a diagram for explaining an example of operation in the first embodiment.
  • FIG. 7 is a diagram for explaining an example of operation in a third embodiment.
  • FIG. 7 is a diagram for explaining an example of operation in a third embodiment.
  • FIG. 7 is a diagram for explaining an example of operation in a third embodiment.
  • FIG. 7 is a diagram for explaining an example of operation in a third embodiment.
  • FIG. 7 is a diagram for explaining an example of operation in a third embodiment.
  • It is a diagram showing an example of the configuration of the base station 10 (LMF 30).
  • 2 is a diagram showing a configuration example of a terminal 20.
  • FIG. It is a diagram showing an example of the hardware configuration of base station 10, terminal 20, or LMF 30 in an embodiment of the present invention.
  • 1 is a diagram showing an example of the configuration of a vehicle.
  • Existing technologies are used as appropriate for the operation of the wireless communication system according to the embodiment of the present invention.
  • the existing technology is, for example, existing LTE or existing NR, but is not limited to existing LTE or NR.
  • the SS Synchronization signal
  • PSS Primary SS
  • SSS Secondary SS
  • PBCH Physical broadcast channel
  • PRACH Physical broadcast channel
  • PDCCH Physical Downlink Control Channel
  • PDSCH Physical Downlink Shared Channel
  • PUCCH Physical Uplink Control Channel
  • PUSCH Physical Uplink Shared Channel
  • NR corresponds to NR-SS, NR-PSS, NR-SSS, NR-PBCH, NR-PRACH, etc.
  • NR- the above terms in NR correspond to NR-SS, NR-PSS, NR-SSS, NR-PBCH, NR-PRACH, etc.
  • NR- the signal is used for NR, it is not necessarily specified as "NR-".
  • the duplex method may be a TDD (Time Division Duplex) method, an FDD (Frequency Division Duplex) method, or another method (for example, Flexible Duplex, etc.). This method may also be used.
  • configure the wireless parameters etc. may mean pre-configuring a predetermined value, or may mean that the base station 10 or Wireless parameters notified from the terminal 20 may also be set.
  • FIG. 1 is a diagram showing a configuration example (1) of a wireless communication system according to an embodiment of the present invention.
  • a wireless communication system according to an embodiment of the present invention includes a base station 10 and a terminal 20, as shown in FIG.
  • an LMF (Location Management Function) 30 is shown as an example of a network device.
  • the LMF 30 may also be called a position management device.
  • LMF 30 includes a function of calculating the position of a terminal based on measurement results from terminal 20 or base station 10.
  • the LMF 30 includes a function of transmitting support information (assistance data) to the base station 10 and the like.
  • one base station 10 and one terminal 20 are shown in FIG. 1, this is just an example, and there may be a plurality of each.
  • 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 radio signal are defined in the time domain and the frequency domain, and the time domain may be defined by the number of OFDM (Orthogonal Frequency Division Multiplexing) symbols, and the frequency domain may be defined by the number of subcarriers or resource blocks. Good too.
  • Base station 10 transmits a synchronization signal and system information to terminal 20.
  • the synchronization signals are, for example, NR-PSS and NR-SSS.
  • System information is transmitted, for example, on NR-PBCH, and is also referred to as broadcast information.
  • the synchronization signal and system information may be called SSB (SS/PBCH block). As shown in FIG.
  • the base station 10 transmits a control signal or data to the terminal 20 on the DL (Downlink), and receives the control signal or data from the terminal 20 on the UL (Uplink). Both the base station 10 and the terminal 20 can perform beamforming to transmit and receive signals. Further, both the base station 10 and the terminal 20 can apply MIMO (Multiple Input Multiple Output) communication to DL or UL. Further, both the base station 10 and the terminal 20 may communicate via a secondary cell (SCell) and a primary cell (PCell) using CA (Carrier Aggregation). Furthermore, the terminal 20 may communicate via a primary cell of the base station 10 and a primary SCG cell (PSCell) of another base station 10 using DC (Dual Connectivity).
  • SCell secondary cell
  • PCell primary cell
  • DC Direct Connectivity
  • 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 a communication module for M2M (Machine-to-Machine). 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 receiving various types of information provided by the wireless communication system. Use communication services. Furthermore, the terminal 20 receives various reference signals transmitted from the base station 10, and measures the channel quality based on the reception results of the reference signals.
  • a wireless communication function such as a smartphone, a mobile phone, a tablet, a wearable terminal, or a communication module for M2M (Machine-to-Machine).
  • M2M Machine-to-Machine
  • the terminal 20 is capable of performing carrier aggregation in which multiple cells (multiple CCs (Component Carriers)) are bundled to communicate with the base station 10.
  • multiple CCs Component Carriers
  • carrier aggregation one PCell (Primary cell) and one or more SCells (Secondary cells) are used.
  • SCells Secondary cells
  • PUCCH-SCell with PUCCH may be used.
  • FIG. 2 is a diagram for explaining an example (2) of a wireless communication system according to an embodiment of the present invention.
  • FIG. 2 shows an example of the configuration of a wireless communication system when dual connectivity (DC) is implemented.
  • a base station 10A serving as an MN (Master Node) and a base station 10B serving as an SN (Secondary Node) are provided.
  • Base station 10A and base station 10B are each connected to a core network.
  • Terminal 20 can communicate with both base station 10A and base station 10B.
  • the cell group provided by the base station 10A, which is an MN, is called an MCG (Master Cell Group), and the cell group provided by the base station 10B, which is an SN, is called an SCG (Secondary Cell Group).
  • MCG Master Cell Group
  • SCG Secondary Cell Group
  • the MCG is composed of one PCell and one or more SCells
  • the SCG is composed of one PSCell (Primary SCG Cell) and one or more SCells.
  • the processing operations in this embodiment may be executed with the system configuration shown in FIG. 1, may be executed with the system configuration shown in FIG. 2, or may be executed with a system configuration other than these.
  • positioning may also be expressed as “positioning.”
  • the above operation enables low-delay positioning even in the DRX state and suppresses deterioration in accuracy.
  • the power consumption of the terminal 20 increases.
  • terminals in DRX state terminals for which DRX is set
  • transmit or receive signals for positioning as reliably as possible on-duration timing.
  • Another feature of this technology is that it has a small impact on specifications. Note that "signal reception” may be rephrased as "signal measurement.”
  • setting information from the base station 10 to the terminal 20 may be replaced with “setting information from the LMF 30 to the terminal 20.”
  • “Setting information from the LMF 30 to the terminal 20” may be rephrased to "setting information from the base station 10 to the terminal 20.”
  • “Setting information from the network to the terminal 20” may be rephrased to "setting information from the base station 10 to the terminal 20” or "setting information from the LMF 30 to the terminal 20.”
  • Transmitting (or reporting) information from the terminal 20 to the base station 10 may be rephrased to “transmitting (or reporting) information from the terminal 20 to the LMF 30.”
  • Transmitting (or reporting) information from the terminal 20 to the LMF 30 may be rephrased to “transmitting (or reporting) information from the terminal 20 to the base station 10.”
  • Send (or reporting) information from the terminal 20 to the network (NW) is defined as “sending (or reporting) information from the terminal 20 to the base station 10" or “sending information from the terminal 20 to the LMF 30.” It may be rephrased as "to send (or report)".
  • the zeroth to third embodiments will be described below. A summary of these is as follows. Note that the first embodiment is referred to as the "0th embodiment" because it is a high-level proposal. Further, although it is assumed that the terminal 20 according to each embodiment is a UE for Red cap, the technology according to each embodiment may be applied to a terminal 20 that is not a UE for Red cap.
  • Zeroth embodiment The terminal 20 reports setting information regarding DRX to the LMF 30.
  • the terminal 20 transmits and receives signals for positioning in accordance with the DRX cycle.
  • the terminal 20 performs operations based on priorities between positioning and DRX.
  • the terminal 20 reports the setting information regarding DRX set in the terminal 20 to the LMF 30.
  • the base station 10 may report setting information regarding DRX to the LMF 30.
  • the terminal 20 assumes that the base station 10 reports configuration information regarding DRX to the LMF 30.
  • DRX-related setting information may be referred to as DRX-related information.
  • the configuration information regarding DRX is, for example, DRX-Config defined in existing specifications (eg, TS38.331).
  • DRX-Config includes drx-onDurationTimer, drx-InactivityTimer, drx-LongCycleStartOffset, etc. Note that DRX cycle is calculated from subframe time and drx-LongCycleStartOffset.
  • the LMF 30 that has received the DRX-related configuration information may notify the serving TRP (and/or non-serving TRP) of the DRX-related configuration information as assistance data.
  • the terminal 20 may assume that configuration information regarding the DRX is notified from the LMF 30 to the serving TRP (and/or non-serving TRP). Based on this assumption, for example, the terminal 20 is configured or instructed by the base station 10 ( Assuming that it will be done from serving TRP).
  • the base station 10 may assume that the terminal 20 transmits or receives a signal for positioning in accordance with the timing of DRX.
  • FIG. 5 An example of the operation of the 0th embodiment is shown in FIG.
  • the terminal 20 transmits DRX related information to the LMF 30 in S101.
  • the LMF 30 transmits assistance data to the base station 10.
  • the assistance data includes all or part of the DRX-related information received by the LMF 30 in S101.
  • FIG. 5 separately shows an example of operation.
  • the base station 10 transmits DRX related information to the LMF 30 in S201.
  • the LMF 30 transmits assistance data to the base station 10.
  • the terminal 20 reports configuration information regarding DRX to the LMF 30, for example, at any of the following timings (1) to (5).
  • timings (1) to (5) below may be timings at which the base station 10 reports configuration information regarding DRX to the LMF 30.
  • timings (1) to (5) below may be timings at which the terminal 20 reports configuration information regarding DRX to the base station 10.
  • the terminal 20/base station 10 may report configuration information regarding DRX only at the timing when Random Access is completed, or may report configuration information regarding DRX every time it transitions to CONNECTED after establishing RRC.
  • the NW here may be the base station 10, the LMF 30, or a network device other than these.
  • the terminal 20 may apply any one of the above (1) to (4), or may apply any one or more of the above (1) to (4). Good too.
  • the terminal 20 reports at both the timing when the positioning function is set and the timing when the DRX function is set.
  • the terminal 20 may report configuration information regarding DRX to the LMF 30 at any of the following frequencies (1) to (5), for example.
  • the following frequencies (1) to (5) may be frequencies at which the base station 10 reports configuration information regarding DRX to the LMF 30.
  • frequencies (1) to (5) below may be frequencies at which the terminal 20 reports configuration information regarding DRX to the base station 10.
  • the reporting cycle may be specified in the specifications, or may be set from the NW (eg, base station 10, LMF 30) to the terminal 20.
  • NW eg, base station 10, LMF 30
  • a timer is set in the terminal 20/base station 10, and a report is made when the timer expires.
  • the value of the timer may be specified in the specifications, or may be set from the NW (eg, base station 10, LMF 30) to the terminal 20.
  • a report is made when an information update is requested from the NW (eg, base station 10, LMF 30) to the terminal 20.
  • NW eg, base station 10, LMF 30
  • the terminal 20 may apply any one of the above (1) to (4), or may apply any one or more of the above (1) to (4). Good too. For example, when (2) and (3) are applied, the terminal 20 reports when the timer expires, and updates the DRX-related configuration information (DRX information) regardless of whether the timer expires. Report when it happens.
  • DRX information DRX-related configuration information
  • network devices such as the LMF 30 can grasp the DRX status.
  • the first embodiment assumes that the setting information regarding DRX described in the zeroth embodiment is reported to the LMF 30. However, such an assumption is an example, and the first embodiment may be implemented independently of the zeroth embodiment.
  • the terminal 20 performs signal transmission/signal reception for positioning in accordance with DRX timing. "Assuming that signal transmission/signal reception for positioning is performed in accordance with DRX timing," the control unit of the terminal 20 is to "suppose that signal transmission/signal reception for positioning is performed in accordance with DRX timing.” This includes instructing the transmitter or receiver to "perform".
  • the terminal 20 performs DRX in accordance with the timing of signal transmission/signal reception for positioning. “Assuming that DRX is performed in accordance with the timing of signal transmission/signal reception for positioning” means that the control unit of the terminal 20 “assumes that DRX is performed in accordance with the timing of signal transmission/signal reception for positioning”. This includes instructing the transmitter or receiver to perform DRX.
  • the terminal 20 also requests the NW (e.g. base station 10, LMF 30) to set or instruct signal transmission/signal reception to perform signal transmission/signal reception for positioning in accordance with DRX timing. It's okay.
  • NW e.g. base station 10, LMF 30
  • "according to DRX timing” specifically means, for example, performing signal transmission/signal reception for positioning during DRX on-duration based on the values of the following parameters. It is. Alternatively, the following parameters are adjusted so that signal transmission/signal reception for positioning is performed during the DRX on-duration. Any two or three parameters of (1) to (3) may be considered in combination.
  • the signal transmitted by the terminal 20 for positioning is, for example, SRS (UL-SRS), and the signal received (measured) by the terminal 20 for positioning is, for example, DL-PRS.
  • SRS UL-SRS
  • DL-PRS DL-PRS
  • Example 1 DRX cycle>
  • SRS transmission/DL-PRS reception means “SRS transmission or DL-PRS reception” and means that the description here can be applied to both SRS transmission and DL-PRS reception.
  • DL-PRS reception may be replaced with "DL-PRS measurement.”
  • the resources are set from the base station 10 to the terminal 20.
  • periodic, semi-persistent, and aperiodic are specified as parameters indicating the transmission/reception method for SRS transmission/DL-PRS reception.
  • Basic operation examples regarding periodic, semi-persistent, and periodic are as follows.
  • the terminal 20 designated as periodic performs SRS transmission/DL-PRS reception at the set period.
  • the terminal 20 designated as semi-persistent performs SRS transmission/DL-PRS reception at a set period based on instructions from the base station 10 (eg, MAC CE, DCI).
  • the terminal 20 designated as aperiodic performs SRS transmission/DL-PRS reception using an instruction (eg, MAC CE, DCI) from the base station 10 as a trigger.
  • the terminal 20 is instructed to transmit SRS/DL-PRS from the base station 10 in accordance with the DRX cycle reported to the LMF 30.
  • the periodicity of the SRS/DL-PRS when periodic or semi-persistent is configured as the SRS/DL-PRS resource configuration from the base station 10 to the terminal 20, the periodicity of the SRS/DL-PRS , the same periodicity as DRX cycle is set.
  • the upper part of FIG. 6 shows an example of the SRS transmission operation when such settings are made for the terminal 20.
  • the receiving operation of DL-PRS is also similar.
  • the terminal 20 can detect the on-duration (when the terminal 20 is active) that arrives in the DRX cycle. (Wake-up period), SRS transmission/DL-PRS reception can be performed.
  • the base station 10 configures the terminal 20 as an aperiodic (or semi-persistent) resource configuration for SRS/DL-PRS
  • the terminal 20 has limited activate timing. That is, the base station 10 transmits an activation instruction for SRS transmission/DL-PRS reception to the terminal 20 so that the terminal 20 can perform SRS transmission/DL-PRS reception in the DRX cycle. Furthermore, the base station 10 transmits an activation instruction to the terminal 20 so that the terminal 20 can receive the activation instruction on-duration.
  • the terminal 20 receives an activation request from the base station 10 to transmit SRS/receive DL-PRS at a timing when SRS transmission/DL-PRS reception cannot be performed, the terminal 20 sends an activation failure to the base station 10. It is also possible to return it to
  • the lower part of FIG. 6 shows an example where activation failure is returned to the base station 10.
  • the terminal 20 receives an activation request (indicated by A) from the base station 10 instructing SRS transmission, shown by B, during a certain on-duration.
  • the terminal 20 cannot perform the SRS transmission indicated by B, it returns activation failure to the base station 10.
  • the terminal 20 may be able to perform SRS transmission/DL-PRS reception during a period outside the DRX on-duration. In other words, it may be possible to perform the operation shown in FIG. For example, in the case shown in the lower part of FIG. 6, when the terminal 20 receives an activation request (indicated by A) instructing SRS transmission shown by B, the terminal 20 temporarily becomes active (wake-up) at timing B. Therefore, SRS transmission/DL-PRS reception may be performed.
  • Example 2 On duration timer> Example 2 will be explained using DL-PRS as an example, but it is also applicable to SRS as well.
  • DL-PRS is transmitted from multiple base stations (also called TRPs).
  • the terminal 20 measures its own position by measuring the received power or time difference of a plurality of DL-PRSs received from a plurality of TRPs.
  • the terminal 20 may report the measurement results of a plurality of DL-PRSs to the LMF 30, and the LMF 30 may position the terminal 20.
  • the terminal 20 assumes that the on-duration timer is set by the base station 10 in consideration of the expected arrival time width of a plurality of DL-PRSs.
  • the on-duration timer indicates the length of time (that is, on-duration) during which the terminal 20 becomes Active in 1 DRX cycle.
  • the base station 10 sets an on-duration timer in the terminal 20 in consideration of the expected arrival time width of a plurality of DL-PRS.
  • Considering the arrival time width means that DL from at least one (or a predetermined number larger than 1) TRP among the DL-PRS of multiple TRPs configured in the terminal 20. - Refers to being in a state where PRS can be received. That is, Example 2 is an operation for allowing the terminal 20 to receive multiple DL-PRS transmitted from multiple TRPs as reliably as possible. However, it is not essential to receive everything.
  • the terminal 20 receives DL-PRS from three TRPs during an active period (on-duration). As shown in FIG. 7, there are three TRPs: one serving TRP (A) and two non-serving TRPs (B) and (C).
  • the three DL-PRSs transmitted from TRPs (A) to (C) arrive at the terminal 20 within the time width T, as shown in FIG.
  • the on-duration timer is set from the base station 10 to the terminal 20 so as to include this time width T.
  • the period before the on-duration (estimated arrival time) is defined as the preparation period
  • the period after the on-duration (estimated arrival time) is defined as the margin time.
  • Either or both of the preliminary period and the preliminary period may be set from the base station 10 to the terminal 20.
  • the terminal 20 wakes up and monitors signals not only during the on-duration, but also during the preparation period and preliminary period.
  • the preparation period may also be referred to as a previous period, an additional active period, or the like.
  • the preliminary period may be referred to as a subsequent period, an additional active period, or the like.
  • the above arrival time width (eg, relative value (arrival time difference) of the PRS of another TRP with respect to the PRS arrival time of a certain TRP) is notified to the base station 10 from the LMF 30, for example. Further, the above arrival time width may be notified from the LMF 30 to the terminal 20, and the terminal 20 may include it in DRX-related information and notify it to the LMF 30, and the DRX-related information may be notified to the base station 10.
  • the base station 10 which has grasped the arrival time width, determines an on-duration timer, preparation period, preliminary period, etc. so that the terminal 20 can receive a predetermined number of DL-PRSs according to the arrival time width.
  • the DRX setting information including the information is notified to the terminal 20 by RRC signaling.
  • the terminal 20 receives (measures) a plurality of DL-PRSs as shown in FIG. 7 based on the DRX configuration information.
  • Example 3 an example using an inactivity timer will be explained.
  • Example 3 will be explained using DL-PRS as an example, but it is also applicable to SRS as well.
  • the terminal 20 starts the inactivity timer when receiving a PDCCH during the DRX wake up period (active period), and extends the wake up period until the inactivity timer expires.
  • Example 3 when the terminal 20 receives a positioning signal, it performs the same operation as when it receives a PDCCH. That is, when the terminal 20 receives a positioning signal during the wake up period (active period) of the DRX, it starts the inactivity timer and extends the wake up period until the inactivity timer expires.
  • the positioning signal is not limited to a specific signal, but includes, for example, DL-PRS, PDCCH (control signal), PDSCH (data), etc.
  • FIG. 8 shows an example of operation when using DL-PRS as a positioning signal.
  • the terminal 20 receives the DL-PRS during the active period indicated by A, it operates the inactivity timer and continues the wake up period until the inactivity timer expires. Such operation makes it easier to receive multiple DL-PRSs from multiple TRPs, as described in Example 2.
  • the value of the inactivity timer may be determined based on the arrival time width of the DL-PRS.
  • the LMF 30 notifies the base station 10 of the arrival time width.
  • the base station 10 that has grasped the arrival time width for example, sets the value of the inactivity timer to the same value as the arrival time width or a value larger than the arrival time width, and transmits the DRX configuration information including the set information to the terminal by RRC signaling.
  • Notify 20 The terminal 20 performs operations as shown in FIG. 8 based on the DRX setting information.
  • the inactivity timer may be set from the NW to the terminal 20 as described above, or a default value may be defined, and the terminal 20 and base station 10 may use the default value.
  • the terminal 20 may start the inactivity timer when transmitting a positioning signal during the wake up period (active period) of the DRX, and extend the wake up period until the inactivity timer expires.
  • Signals for positioning in UL are not limited to specific signals, but include, for example, SRS, UL-PRS, PUCCH (control signal), PUSCH (data), and the like.
  • the terminal 20 can perform a positioning operation with low power consumption. Furthermore, the technology according to the first embodiment has a small spec impact upon introduction.
  • the second embodiment may be implemented in combination with any other embodiment, or may be implemented independently of any other embodiment.
  • the operation is combined with the operation in the zeroth embodiment. In other words, assume that DRX-related information is being reported to the NW side.
  • the terminal 20 assumes that there is a priority order between signal transmission/signal reception for positioning and DRX, and performs operations according to the priority order.
  • the following options 1 and 2 are available as operations according to the priority order.
  • Option 1 is an example where DRX has a higher priority than positioning.
  • the terminal 20 notifies the base station 10 (or LMF 30) that DRX has a higher priority than positioning.
  • Options 1-1 and 1-2 will be explained below.
  • Option 1-1 and option 1-2 may be implemented in combination.
  • Option 1-1 The base station 10 (or LMF 30) transmits/receives signals for positioning during the active period (wake up period) of the terminal 20, for example, based on the DRX cycle and on-duration timer of the terminal 20. Settings for signal transmission/signal reception for positioning are made for the terminal 20 as shown in FIG.
  • the terminal 20 when the terminal 20 is configured to transmit/receive signals for positioning without considering the priority between DRX and positioning, DRX has a higher priority than positioning.
  • the terminal 20 may request the base station 10 (or the LMF 30) to change the settings for positioning signal transmission/signal reception.
  • the base station 10 (or LMF 30) that has received the configuration change request transmits/receives signals for positioning during the active period of the terminal 20, based on the DRX cycle and on-duration timer of the terminal 20, for example.
  • Settings (resetting) of signal transmission/signal reception for positioning are performed on the terminal 20 so that the terminal 20 is configured as shown in FIG.
  • Option 1-2 If the terminal 20, for which DRX has a higher priority than positioning, receives an activation instruction for corresponding signal transmission/signal reception from the base station 10 during the sleep period, it will return an activation failure to the base station 10. Good too.
  • Option 2 is an example where positioning has a higher priority than DRX.
  • the terminal 20 notifies the base station 10 (or LMF 30) that positioning has a higher priority than DRX.
  • Options 2-1, 2-2, and 2-3 will be explained below. Options 2-1, 2-2, and 2-3 can be implemented in any combination.
  • Option 2-1 For example, if the terminal 20 is in the DRX state and has determined that positioning has a higher priority than DRX, it ends the DRX state. Regarding the method of terminating the DRX state, the terminal 20 may request the base station 10 to terminate DRX, or the base station 10 may instruct the terminal 20 to terminate DRX. Note that the terminal 20 may determine that the positioning has a higher priority than the DRX when the positioning is set by the base station 10.
  • the terminal 20 may terminate DRX at a timing a predetermined period after the timing at which reconfiguration for terminating DRX is performed from the base station 10. Examples 1 and 2 will be explained as detailed examples.
  • Example 1 of how to terminate DRX Assume that a certain time T (T ⁇ 0) [ms] is specified or that a time T (T ⁇ 0) [ms] is set in the terminal 20.
  • the terminal 20 terminates DRX after T [ms] from the reconfiguration for terminating DRX.
  • the terminal 20 may terminate DRX within T' [ms] after reconfiguration for terminating DRX using a certain time T'(T' ⁇ 0) [ms]. .
  • Example 2 (Example 2 of how to terminate DRX) It is assumed that a certain number of slots N (N ⁇ 0) [slots] is specified or that a certain number of slots N (N ⁇ 0) [slots] is set in the terminal 20.
  • the terminal 20 terminates DRX after N [slots] from the reconfiguration for terminating DRX.
  • the terminal 20 may end DRX within N′ [slots] from reconfiguration for ending DRX.
  • Option 2-2 The base station 10 (or LMF 30) controls the DRX cycle and on-duration, for example, so that the terminal 20 transmits/receives signals for positioning during the DRX active period (wake up period) of the terminal 20. Set (or re-set) the DRX settings with timer etc. adjusted on the terminal 20. Furthermore, the terminal 20 may request such setting/resetting from the base station 10 (or LMF 30).
  • the terminal 20 in the DRX state may perform positioning signal transmission/signal reception during a period other than the active period (sleep period). That is, as shown in FIG. 3, the terminal 20 may temporarily wake up and perform signal transmission/signal reception operations.
  • the terminal 20 determines the priority between DRX and positioning at any timing/frequency among timings (1) to (5) and frequencies (1) to (5) described in the zeroth embodiment. It may also be reported to the base station 10 (or LMF 30).
  • the terminal 20 may report the priority between DRX and positioning to the base station 10 (or LMF 30) at the timing when the required positioning frequency changes. For example, the terminal 20 reports priority information indicating that positioning is prioritized over DRX to the base station 10 (or LMF 30) at the timing when its own mode changes from power saving mode to high-frequency positioning mode. do.
  • the terminal 20 By reporting the priority between DRX and positioning to the base station 10 (or LMF 30), the terminal 20 selects "DRX", “signal transmission/signal reception for positioning", or "DRX and It may be assumed that the settings of "both signal transmission/signal reception for positioning" are reconfigured from the base station 10.
  • the terminal 20 may assume that the priority between DRX and positioning is set by the base station 10 (or LMF 30).
  • DRX positioning signal transmission/signal reception
  • DRX and positioning The contents of the settings (resettings) for "both signal transmission/signal reception” may implicitly indicate the priority between DRX and positioning. For example, when setting (resetting) is performed so that the operation of option 1 (DRX > positioning) is performed, it is implicitly indicated that DRX has a higher priority than positioning. Furthermore, if the setting (resetting) is made so that the operation of option 2 (positioning > DRX) is performed, it is implicitly shown that positioning has a higher priority than DRX.
  • the terminal 20 may assume (determine) different priorities for positioning DL signals (e.g. DL-PRS Rx) and UL signals (SRS Tx), or assume (determine) a common priority. ) may be done. For example, the terminal 20 in the DRX state prioritizes positioning over DRX for DL-PRS, assumes that it receives DL-PRS upon wake up, and receives positioning for UL-SRS. It is assumed that DRX is prioritized over UL-SRS and that it is not transmitted even if the UL-SRS transmission timing arrives in the sleep state.
  • DL-PRS Rx DL-PRS Rx
  • SRS Tx UL signals
  • the technique of the second embodiment described above enables operation that takes into account the trade-off between power consumption and positioning performance.
  • the third embodiment may be implemented in combination with any other embodiment, or may be implemented independently of the other embodiments.
  • the operation is combined with the operation in the zeroth embodiment. In other words, assume that DRX-related information is being reported to the NW side.
  • the base station 10 may detect this and return a positioning activation failure to the LMF 30.
  • the terminal 20 assumes that the base station 10 will return positioning activation failure to the LMF 30 if it is unable to transmit/receive signals for positioning at the timing instructed (or set) by the base station 10 (or LMF 30). You may.
  • the terminal 20 may also be possible to return positioning activation failure.
  • positioning activation failure is an example. Any name of the signal/message may be used as long as the message/signal indicates that positioning signal transmission/signal reception cannot be performed. A message/signal indicating that positioning signal transmission/signal reception cannot be performed may be called "failure.”
  • Examples 1 and 2 below are examples of cases in which positioning signal transmission/signal reception cannot be performed at the timing instructed (or set) by the base station 10 (or LMF 30).
  • Example 1 A case in which the timing at which positioning signals can be transmitted/received is limited by the DRX settings set from the base station 10 to the terminal 20. In this case, for example, even if the timing for positioning signal transmission/signal reception arrives during the DRX sleep period, the terminal 20 cannot perform the signal transmission/signal reception.
  • Example 1 if positioning has a higher priority than DRX, settings are made such that positioning signal transmission/signal reception does not occur during the sleep period, for example. In addition, if positioning has a higher priority than DRX, even if positioning signal transmission/signal reception occurs during the sleep period, the terminal 20 temporarily wakes up and sends/signals the signal. It is also possible to perform reception.
  • Example 2 A case where DRX has a higher priority than positioning as described in the second embodiment. In this case, for example, when the timing for positioning signal transmission/signal reception arrives during the DRX sleep period, the terminal 20 cannot perform the signal transmission/signal reception.
  • Option 1 the terminal 20 or the base station 10 transmits an activation failure in response to an activation request received by the terminal 20 during the wake up period in the DRX state during the same wake up period.
  • FIG. 10 shows an example of option 1.
  • the terminal 20 receives an SRS activation instructing to transmit the signal indicated by A during the wake up period, but cannot transmit the signal indicated by A, so the activation failure is transmitted during the wake up period. be done.
  • the terminal 20 or base station 10 when the terminal 20 or base station 10 performs signal transmission/signal reception based on the settings without activation during the sleep period, the terminal 20 or the base station 10 performs the wake-up period immediately before the sleep period, as in the case of FIG. Then, failure may be sent to indicate that signal transmission/signal reception is not possible.
  • Option 2 the terminal 20 or the base station 10 transmits an activation failure in response to an activation request received by the terminal 20 during the wake up period in the DRX state in the subsequent wake up period.
  • the "subsequent wake up period” may be the wake up period immediately following the wake up period in which the activation request was received, or the wake up period immediately after the wake up period in which the activation request was received. It may be an up period.
  • the terminal 20 or base station 10 performs signal transmission/signal reception based on settings that does not require activation during the sleep period, the terminal 20 or base station 10 cannot transmit/receive signals during the wake-up period after the sleep period. You may also send a failure message to indicate this.
  • the "wake up period after the sleep period" may be the wake up period immediately after the sleep period, or may be the wake up period after the wake up period immediately after the sleep period.
  • Option 2-1> In option 2-1, as shown in FIG. 11, if there is no response/failure even after the terminal 20 receives the activation request and the period Determine that failure has been returned for the activation request.
  • Option 2-2 is an example of operation in a situation where period X has not yet expired in option 2-1.
  • the base station The station 10 may determine that failure has been returned from the terminal 20 by incrementing the timer that counts X and determining that X has expired.
  • the terminal 20 after the terminal 20 receives SRS activation in a certain wake-up period, when the activation timing indicated by A has elapsed without transmitting a response/failure, the terminal 20 receives the SRS activation from the base station 10 (or LMF 30). determines that the terminal 20 has returned failure.
  • Option 3 ⁇ Activation failure transmission timing: Option 3> In option 3, the terminal 20 wakes up for a short time during the sleep period, and then transitions to the sleep state again after transmitting failure.
  • FIG. 13 shows an example of transmitting activation failure in response to SRS activation.
  • the terminal 20 assumes that the inactivity timer is not counted depending on the failure transmission. In other words, the terminal 20 transitions to a sleep state immediately after transmitting failure.
  • the terminal 20 assumes the time according to the set DRX cycle as the next wake up timing after the wake up period in which the activation request is received. In other words, the terminal 20 does not count the wake up for failure transmission.
  • Capability information (UE capability) indicating that the operation of one or more of the zero to third embodiments is supported is defined, and the terminal 20 transmits the capability information to the base station 10. You may report it.
  • the base station 10 (or LMF 30) only transmits capability information to the terminal 20 that indicates that it supports the operation of any one or more of the 0th to 3rd embodiments.
  • DRX settings/positioning settings according to the supported embodiment may also be performed.
  • PRS Positioning Reference Signal
  • DL-PRS e.g. SRS for positioning, SRS
  • SRS may be read as “SRS for MIMO” or “SRS for positioning.”
  • NW may be read as “gNB”, “TRP”, “LMF”, etc.
  • Server TRP may be replaced with “reference TRP", etc.
  • Configured/indicated by the NW may be read as “configured/activated/indicated by the NW using RRC/MAC-CE/DCI.”
  • DRX means “Connected DRX (CDRX/C-DRX)", “Extended DRX (EDRX/E-DRX/ECDRX/E-CDRX)", “Enhanced DRX (EDRX/E-DRX/ECDRX/E- CDRX)”.
  • Preparation period and “margin time” may be replaced with “time offset”, “additional time”, etc.
  • FIG. 14 is a diagram showing an example of the functional configuration of the base station 10.
  • base station 10 includes a transmitting section 110, a receiving section 120, a setting section 130, and a control section 140.
  • the functional configuration shown in FIG. 14 is only an example. As long as the operations according to the embodiments of the present invention can be executed, the functional divisions and functional parts may have any names.
  • the transmitting section 110 and the receiving section 120 may be collectively referred to as a communication section.
  • the transmitting unit 110 includes a function of generating a signal to be transmitted to the terminal 20 side and transmitting the signal wirelessly.
  • the transmitter 110 can also transmit a signal to a network device such as the LMF 30.
  • the receiving unit 120 includes a function of receiving various signals transmitted from the terminal 20 and acquiring, for example, information on a higher layer from the received signals.
  • the receiving unit 120 can also receive signals from a network device such as the LMF 30.
  • the transmitter 110 has a function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL/UL control signals, DCI using PDCCH, data using PDSCH, etc. to the terminal 20.
  • the setting unit 130 stores preset setting information and various setting information to be sent to the terminal 20 in a storage device included in the setting unit 130, and reads them from the storage device as necessary.
  • the control unit 140 schedules DL reception or UL transmission of the terminal 20 via the transmission unit 110. Further, the control unit 140 includes a function to perform LBT. A functional unit related to signal transmission in the control unit 140 may be included in the transmitting unit 110, and a functional unit related to signal reception in the control unit 140 may be included in the receiving unit 120. Further, the transmitting section 110 may be called a transmitter, and the receiving section 120 may be called a receiver.
  • the LMF 30 may also have the configuration shown in FIG. 14.
  • the transmitter 110 transmits signals to other network devices (including base stations), and the receiver 120 receives signals from other network devices (including base stations). do.
  • FIG. 15 is a diagram showing an example of the functional configuration of the terminal 20.
  • the terminal 20 includes a transmitting section 210, a receiving section 220, a setting section 230, and a control section 240.
  • the functional configuration shown in FIG. 15 is only an example. As long as the operations according to the embodiments of the present invention can be executed, the functional divisions and functional parts may have any names.
  • the transmitting section 210 and the receiving section 220 may be collectively referred to as a communication section.
  • the transmitter 210 creates a transmission signal from the transmission data and wirelessly transmits the transmission signal.
  • the receiving unit 220 wirelessly receives various signals and obtains higher layer signals from the received physical layer signals. Further, the receiving unit 220 has a function of receiving NR-PSS, NR-SSS, NR-PBCH, DL/UL/SL control signals, DCI by PDCCH, data by PDSCH, etc. transmitted from the base station 10.
  • the transmitting unit 210 transmits a PSCCH (Physical Sidelink Control Channel), a PSSCH (Physical Sidelink Shared Channel), a PSDCH to another terminal 20 as D2D communication.
  • PSCCH Physical Sidelink Control Channel
  • PSSCH Physical Sidelink Shared Channel
  • PSDCH Physical Sidelink Shared Channel
  • the receiving unit 220 may receive the PSCCH, PSSCH, PSDCH, PSBCH, etc. from the other terminal 20. Further, the transmitter 210 includes the antenna port described in this embodiment.
  • the setting unit 230 stores various types of setting information received from the base station 10 or other terminals by the receiving unit 220 in a storage device included in the setting unit 230, and reads the information from the storage device as necessary.
  • the setting unit 230 also stores setting information that is set in advance.
  • the control unit 240 controls the terminal 20.
  • a functional unit related to signal transmission in the control unit 240 may be included in the transmitting unit 210, and a functional unit related to signal reception in the control unit 240 may be included in the receiving unit 220.
  • the transmitter 210 may be called a transmitter, and the receiver 220 may be called a receiver.
  • At least the following terminals and base stations are provided.
  • Additional note 1 (Additional note 1) a transmitter that transmits information regarding intermittent reception to the network; a control unit that assumes transmitting or receiving signals for positioning in accordance with the timing of intermittent reception; A terminal equipped with (Additional note 2) a transmitter that transmits information regarding intermittent reception to the network; a control unit that assumes intermittent reception in accordance with the timing of signal transmission or signal reception for positioning; A terminal equipped with (Additional note 3) The terminal according to supplementary note 1 or 2, wherein the control unit controls the terminal to transmit or receive a signal for positioning at the period of the intermittent reception.
  • Any of Items 1 to 6 provides a technique that allows a terminal that performs intermittent reception to appropriately transmit or receive signals for positioning. According to additional items 3, 4, and 5, the terminal can appropriately transmit or receive signals for positioning.
  • Additional note 2 a control unit that assumes a priority order between intermittent reception and signal transmission or signal reception for positioning; and a communication unit configured to perform signal transmission or signal reception for positioning in an intermittent reception state according to the priority order.
  • the communication unit receives a setting change regarding the positioning from a network, or transmits the setting change to the network so that the signal transmission or signal reception for the positioning is performed during the wake-up period in the intermittent reception. Request the terminal described in Supplementary Note 1.
  • Supplementary Note 1 When the priority of the intermittent reception is higher than the priority of the signal transmission or signal reception for positioning, Supplementary Note 1: When the communication unit is unable to perform the signal transmission or signal reception for positioning, the communication unit transmits a message to the network indicating that the signal transmission or signal reception for positioning is not possible. Or the terminal described in 2. (Additional note 4) When the priority of the intermittent reception is lower than the priority of the signal transmission or signal reception for positioning, The terminal according to any one of Supplementary Notes 1 to 3, wherein the communication unit terminates the intermittent reception state in response to a request to the network or an instruction from the network.
  • the communication unit receives a setting change related to the intermittent reception from a network, or transmits the setting change to the network so that the signal transmission or signal reception for positioning is performed during the wake-up period in the intermittent reception.
  • Required A terminal described in any one of Supplementary Notes 1 to 4.
  • a control unit that assumes a priority order between intermittent reception and signal transmission or signal reception for positioning; Depending on the priority, a setting change is transmitted to the terminal so that the signal transmission or signal reception for positioning is performed at the terminal during the wake-up period in the intermittent reception, or the setting change is changed. and a communication unit that receives a request from the terminal.
  • Any of Items 1 to 6 provides a technique that allows a terminal that performs intermittent reception to appropriately transmit or receive signals for positioning. According to additional notes 2, 3, 4, and 5, operations can be appropriately executed according to the priority order.
  • Additional note 3 (Additional note 1) a communication unit that determines that it is not possible to transmit or receive signals for positioning due to limitations in signal transmission and reception timing in the intermittent reception state; a control unit that assumes that a message indicating that the signal transmission or the signal reception is not possible is transmitted from the base station to the network device; A terminal equipped with (Additional note 2) a control unit that determines that in an intermittent reception state, signal transmission or signal reception for positioning cannot be performed due to limitations on signal transmission/reception timing; a transmitting unit that transmits a message to a network indicating that the signal transmission or the signal reception is not possible; A terminal equipped with (Additional note 3) When the terminal receives an instruction regarding the signal transmission or the signal reception during a wake-up period, the transmitter transmits the message during the wake-up period or a wake-up period subsequent to the wake-up period.
  • the terminal described in Supplementary Note 2. (Additional note 4) The terminal according to supplementary note 2, wherein the transmitter temporarily wakes up during a sleep period and transmits the message. (Additional note 5) If the message is not transmitted from the terminal for a predetermined period after the instruction regarding the signal transmission or the signal reception is transmitted from the network to the terminal, the network determines that the terminal has transmitted the message. A terminal described in any one of Supplementary Notes 2 to 4.
  • a control unit that determines that, when the terminal is in an intermittent reception state, the terminal is unable to transmit or receive signals for positioning due to limitations on signal transmission/reception timing; a transmitting unit that transmits a message indicating that the signal transmission or the signal reception is not possible to the network device;
  • a base station equipped with
  • Any of Items 1 to 6 provides a technique that allows a terminal that performs intermittent reception to appropriately transmit or receive signals for positioning. According to additional notes 3, 4, and 5, the network side can appropriately determine that the terminal was unable to transmit or receive a signal for positioning.
  • each functional block may be realized using one physically or logically coupled device, or may be realized using two or more physically or logically separated devices directly or indirectly (e.g. , wired, wireless, etc.) and may be realized using a plurality of these devices.
  • the functional block may be realized by combining software with the one device or the plurality of devices.
  • Functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, exploration, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, consideration, These include, but are not limited to, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assigning. I can't do it.
  • a functional block (configuration unit) that performs transmission is called a transmitting unit or a transmitter. In either case, as described above, the implementation method is not particularly limited.
  • the base station 10, terminal 20, etc. in an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure.
  • FIG. 16 is a diagram illustrating an example of the hardware configuration of the base station 10, the terminal 20, and the LMF 30 according to an embodiment of the present disclosure.
  • the base station 10 and terminal 20 described above are 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. Good too.
  • the word “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 each device shown in the figure, or may be configured not to include some of the devices.
  • Each function in the base station 10 and the terminal 20 is performed by loading predetermined software (programs) onto hardware such as the processor 1001 and the storage device 1002, so that the processor 1001 performs calculations and controls communication by the communication device 1004. This is realized by controlling at least one of reading and writing data in the storage device 1002 and the auxiliary storage device 1003.
  • the processor 1001 for example, operates an operating system to control the entire computer.
  • the processor 1001 may be configured with a central processing unit (CPU) that includes interfaces with peripheral devices, a control device, an arithmetic device, registers, and the like.
  • CPU central processing unit
  • control unit 140, control unit 240, etc. may be implemented by the processor 1001.
  • 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 to the storage device 1002, and executes various processes in accordance with these.
  • programs program codes
  • the control unit 140 of the base station 10 shown in FIG. 14 may be realized by a control program stored in the storage device 1002 and operated on the processor 1001.
  • the control unit 240 of the terminal 20 shown in FIG. 15 may be realized by a control program stored in the storage device 1002 and operated on the processor 1001.
  • Processor 1001 may be implemented by one or more chips. Note that the program may be transmitted from a network via a telecommunications line.
  • the storage device 1002 is a computer-readable recording medium, such as at least one of ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), etc. may be configured.
  • the storage device 1002 may be called a register, cache, main memory, or the like.
  • the storage device 1002 can store executable programs (program codes), software modules, and the like to implement a communication method according to an embodiment of the present disclosure.
  • the auxiliary storage device 1003 is a computer-readable recording medium, such as an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (for example, a compact disk, a digital versatile disk, a Blu-ray disk, etc.). -ray disk), smart card, flash memory (eg, card, stick, key drive), floppy disk, magnetic strip, etc.
  • the above-mentioned storage medium may be, for example, a database including at least one of the storage device 1002 and the auxiliary storage device 1003, a server, or other suitable medium.
  • 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 a network device, network controller, network card, communication module, etc., for example.
  • the communication device 1004 includes, for example, a high frequency switch, a duplexer, a filter, a frequency synthesizer, etc. in order to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). It may be composed of.
  • FDD frequency division duplex
  • TDD time division duplex
  • the transmitting and receiving unit may be physically or logically separated into a transmitting unit and a receiving unit.
  • the input device 1005 is an input device (eg, keyboard, mouse, microphone, switch, button, sensor, etc.) that accepts 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 have an integrated configuration (for example, a touch panel).
  • 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 for each device.
  • the base station 10, the terminal 20, and the LMF 30 are equipped with a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), a field programmable gate array (FPGA), etc. It may be configured to include hardware, and a part or all of each functional block may be realized by the hardware. For example, processor 1001 may be implemented using at least one of these hardwares.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • PLD programmable logic device
  • FPGA field programmable gate array
  • the vehicle 2001 may be equipped with the terminal 20, the base station 10, or the LMF 30.
  • FIG. 17 shows an example of the configuration of vehicle 2001.
  • the vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, a front wheel 2007, a rear wheel 2008, an axle 2009, an electronic control unit 2010, and various sensors 2021 to 2029. , an information service section 2012 and a communication module 2013.
  • the terminal 20 or base station 10 according to each aspect/embodiment described in this disclosure may be applied to a communication device mounted on the vehicle 2001, for example, may be applied to the communication module 2013.
  • the drive 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 the user.
  • the electronic control unit 2010 is composed of a microprocessor 2031, memory (ROM, RAM) 2032, and communication port (IO port) 2033. Signals from various sensors 2021 to 2029 provided in the vehicle 2001 are input to the electronic control unit 2010.
  • the electronic control unit 2010 may also be called an ECU (Electronic Control Unit).
  • Signals from various sensors 2021 to 2029 include a current signal from a current sensor 2021 that senses the motor current, a front wheel and rear wheel rotation speed signal obtained by a rotation speed sensor 2022, and a front wheel rotation speed signal obtained by an air pressure sensor 2023. and rear wheel air pressure signals, vehicle speed signals acquired by vehicle speed sensor 2024, acceleration signals acquired by acceleration sensor 2025, accelerator pedal depression amount signals acquired by accelerator pedal sensor 2029, and brake pedal sensor 2026. These include a brake pedal depression amount signal, a shift lever operation signal acquired by the shift lever sensor 2027, a detection signal for detecting obstacles, vehicles, pedestrians, etc. acquired by the object detection sensor 2028, and the like.
  • the information service department 2012 controls various devices such as car navigation systems, audio systems, speakers, televisions, and radios that provide (output) various information such as driving information, traffic information, and entertainment information, and these devices. It is composed of one or more ECUs.
  • the information service unit 2012 provides various multimedia information and multimedia services to the occupants of the vehicle 2001 using information acquired from an external device via the communication module 2013 and the like.
  • the information service department 2012 may include an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, etc.) that accepts input from the outside, and an output device that performs output to the outside (for example, display, speaker, LED lamp, touch panel, etc.).
  • the driving support system unit 2030 includes a millimeter wave radar, LiDAR (Light Detection and Ranging), a camera, a positioning locator (for example, GNSS, etc.), map information (for example, a high-definition (HD) map, an autonomous vehicle (AV) map, etc.) ), gyro systems (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence) chips, and AI processors that prevent accidents and reduce the driver's driving burden.
  • the system is comprised of various devices that provide functions for the purpose and one or more ECUs that control these devices. Further, the driving support system unit 2030 transmits and receives various information via the communication module 2013, and realizes a driving support function or an automatic driving function.
  • Communication module 2013 can communicate with microprocessor 2031 and components of vehicle 2001 via a communication port.
  • the communication module 2013 communicates with the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axle 2009, electronic Data is transmitted and received between the microprocessor 2031, memory (ROM, RAM) 2032, and sensors 2021 to 29 in the control unit 2010.
  • the communication module 2013 is a communication device that can be controlled by the microprocessor 2031 of the electronic control unit 2010 and can communicate with external devices. For example, various information is transmitted and received with an external device via wireless communication.
  • the communication module 2013 may be located either inside or outside the electronic control unit 2010.
  • the external device may be, for example, a base station, a mobile station, or the like.
  • the communication module 2013 receives signals from the various sensors 2021 to 2028 described above that are input to the electronic control unit 2010, information obtained based on the signals, and input from the outside (user) obtained via the information service unit 2012. At least one of the information based on the information may be transmitted to an external device via wireless communication.
  • the electronic control unit 2010, various sensors 2021-2028, information service unit 2012, etc. may be called an input unit that receives input.
  • the PUSCH transmitted by the communication module 2013 may include information based on the above input.
  • the communication module 2013 receives various information (traffic information, signal information, inter-vehicle information, etc.) transmitted from an external device, and displays it on the information service section 2012 provided in the vehicle 2001.
  • the information service unit 2012 is an output unit that outputs information (for example, outputs information to devices such as a display and a speaker based on the PDSCH (or data/information decoded from the PDSCH) received by the communication module 2013). may be called.
  • Communication module 2013 also stores various information received from external devices into memory 2032 that can be used by microprocessor 2031 . Based on the information stored in the memory 2032, the microprocessor 2031 controls the drive section 2002, steering section 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheel 2007, rear wheel 2008, and axle 2009 provided in the vehicle 2001. , sensors 2021 to 2029, etc. may be controlled.
  • the operations of a plurality of functional sections may be physically performed by one component, or the operations of one functional section may be physically performed by a plurality of components.
  • the order of processing may be changed as long as there is no contradiction.
  • Software operated by the processor included in the base station 10 according to the embodiment of the present invention and software operated by the processor included in the terminal 20 according to the embodiment of the present invention are respectively random access memory (RAM), flash memory, and read-only memory. (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server, or any other suitable storage medium.
  • the notification of information is not limited to the aspects/embodiments described in this disclosure, and may be performed using other methods.
  • the notification of information may be 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.
  • RRC signaling may be called an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like.
  • Each aspect/embodiment described in this disclosure is LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system). system), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (x is an integer or decimal number, for example)), 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 Systems that utilize .16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth (registered trademark), and other appropriate systems, and that are extended, modified, created, and defined based on these.
  • the present invention may be
  • the base station 10 may be performed by its upper node in some cases.
  • various operations performed for communication with a terminal 20 are performed by the base station 10 and other network nodes other than the base station 10. It is clear that this can be done by at least one of the following: for example, MME or S-GW (possible, but not limited to).
  • MME Mobility Management Entity
  • S-GW Packet Control Function
  • the other network node may be a combination of multiple other network nodes (for example, MME and S-GW).
  • the information, signals, etc. described in this disclosure can be output from an upper layer (or lower layer) to a lower layer (or upper layer). It may be input/output via multiple network nodes.
  • the input/output information may be stored in a specific location (for example, memory) or may be managed using a management table. Information etc. to be input/output may be overwritten, updated, or additionally written. The output information etc. may be deleted. The input information etc. may be transmitted to other devices.
  • the determination in the present disclosure may be performed based on a value represented by 1 bit (0 or 1), a truth value (Boolean: true or false), or a comparison of numerical values (e.g. , comparison with a predetermined value).
  • Software includes instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, whether referred to as software, firmware, middleware, microcode, hardware description language, or by any other name. , should be broadly construed to mean an application, software application, software package, routine, subroutine, object, executable, thread of execution, procedure, function, etc.
  • software, instructions, information, etc. may be sent and received via a transmission medium.
  • a transmission medium For example, if the software uses wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and/or wireless technology (infrared, microwave, etc.) to create a website, When transmitted from a server or other remote source, these wired and/or wireless technologies are included within the definition of transmission medium.
  • wired technology coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.
  • wireless technology infrared, microwave, etc.
  • data, instructions, commands, information, signals, bits, symbols, chips, etc. which may be referred to throughout the above description, may refer to voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may also be represented by a combination of
  • At least one of the channel and the symbol may be a signal.
  • the signal may be a message.
  • a component carrier may also be called a carrier frequency, a cell, a frequency carrier, or the like.
  • system and “network” are used interchangeably.
  • radio resources may be indicated by an index.
  • Base Station BS
  • wireless base station base station
  • base station fixed station
  • NodeB eNodeB
  • gNodeB gNodeB
  • a base station can accommodate one or more (eg, three) cells. If a base station accommodates multiple cells, the overall coverage area of the base station can be partitioned into multiple smaller areas, and each smaller area is divided into multiple subsystems (e.g., small indoor base stations (RRHs)). Communication services can also be provided by Remote Radio Head).
  • RRHs small indoor base stations
  • Communication services can also be provided by Remote Radio Head).
  • the term "cell” or “sector” refers to part or all of the coverage area of a base station and/or base station subsystem that provides communication services in this coverage.
  • the base station transmitting information to the terminal may be read as the base station instructing the terminal to control/operate based on the information.
  • MS Mobile Station
  • UE User Equipment
  • a mobile station is defined by a person 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, wireless It may also be referred to as a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.
  • At least one of a base station and a mobile station may be called a transmitting device, a receiving device, a communication device, etc.
  • the base station and the mobile station may be a device mounted on a mobile body, the mobile body itself, or the like.
  • the moving body refers to a movable object, and the moving speed is arbitrary. Naturally, this also includes cases where the moving object is stopped.
  • the mobile objects include, for example, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, carts, rickshaws, ships and other watercraft.
  • the mobile object may be a mobile object that autonomously travels based on a travel command. It may be a vehicle (e.g. car, airplane, etc.), an unmanned moving object (e.g. drone, self-driving car, etc.), or a robot (manned or unmanned). good.
  • the base station and the mobile station includes devices that do not necessarily move during communication operations.
  • at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.
  • IoT Internet of Things
  • the base station in the present disclosure may be replaced by a terminal.
  • a configuration in which communication between a base station and a terminal is replaced with communication between a plurality of terminals 20 for example, it may be called D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.)
  • the terminal 20 may have the functions that the base station 10 described above has.
  • words such as "up” and “down” may be replaced with words corresponding to inter-terminal communication (for example, "side”).
  • uplink channels, downlink channels, etc. may be replaced with side channels.
  • a terminal in the present disclosure may be replaced by a base station.
  • a configuration may be adopted in which the base station has the functions that the above-described terminal has.
  • determining may encompass a wide variety of operations.
  • “Judgment” and “decision” include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, search, and inquiry. (e.g., searching in a table, database, or other data structure), and regarding an ascertaining as a “judgment” or “decision.”
  • judgment and “decision” refer to receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, and access.
  • (accessing) may include considering something as a “judgment” or “decision.”
  • judgment and “decision” refer to resolving, selecting, choosing, establishing, comparing, etc. as “judgment” and “decision”. may be included.
  • judgment and “decision” may include regarding some action as having been “judged” or “determined.”
  • judgment (decision) may be read as “assuming", “expecting", “considering”, etc.
  • connection refers to any connection or coupling, direct or indirect, between two or more elements and to each other. It may include the presence of one or more intermediate elements between two elements that are “connected” or “coupled.”
  • the bonds or connections between elements may be physical, logical, or a combination thereof. For example, "connection” may be replaced with "access.”
  • two elements may include one or more electrical wires, cables, and/or printed electrical connections, as well as in the radio frequency domain, as some non-limiting and non-inclusive examples. , electromagnetic energy having wavelengths in the microwave and optical (both visible and non-visible) ranges.
  • the reference signal can also be abbreviated as RS (Reference Signal), and may be called a pilot depending on the applied standard.
  • RS Reference Signal
  • the phrase “based on” does not mean “based solely on” unless explicitly stated otherwise. In other words, the phrase “based on” means both “based only on” and “based at least on.”
  • any reference to elements using the designations "first,” “second,” etc. does not generally limit the amount or order of those elements. These designations may be used in this disclosure as a convenient way to distinguish between two or more elements. Thus, reference to a first and second element does not imply that only two elements may be employed or that the first element must precede the second element in any way.
  • a radio frame may be composed of one or more frames in the time domain. Each frame or frames in the time domain may be called a subframe. A subframe may also be composed of one or more slots in the time domain. A subframe may have a fixed time length (eg, 1 ms) that does not depend on numerology.
  • the numerology may be a communication parameter applied to the transmission and/or reception of a certain signal or channel. Numerology includes, for example, subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame configuration, and transmitter/receiver. It may also indicate at least one of a specific filtering process performed in the frequency domain, a specific windowing process performed by the transceiver in the time domain, and the like.
  • SCS subcarrier spacing
  • TTI transmission time interval
  • transmitter/receiver transmitter/receiver. It may also indicate at least one of a specific filtering process performed in the frequency domain, a specific windowing process performed by the transceiver in the time domain, and the like.
  • 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 unit of time based on numerology.
  • a slot may include multiple mini-slots. Each minislot may be made up of one or more symbols in the time domain. Furthermore, a mini-slot may also be called a sub-slot. A minislot may be made up of fewer symbols than a slot.
  • PDSCH (or PUSCH) transmitted in time units larger than minislots may be referred to as PDSCH (or PUSCH) mapping type A.
  • PDSCH (or PUSCH) transmitted using minislots may be referred to as PDSCH (or PUSCH) mapping type B.
  • Radio frames, subframes, slots, minislots, and symbols all represent time units when transmitting signals. Other names may be used for the radio frame, subframe, slot, minislot, and symbol.
  • one subframe may be called a transmission time interval (TTI)
  • TTI transmission time interval
  • multiple consecutive subframes may be called a TTI
  • one slot or one minislot may be called a TTI. It's okay.
  • at least one of the subframe and TTI may be a subframe (1ms) in existing LTE, a period shorter than 1ms (for example, 1-13 symbols), or a period longer than 1ms. It may be.
  • the unit representing the TTI may be called a slot, minislot, etc. instead of a subframe.
  • one slot may be called a unit time. The unit time may be different for each cell depending on the numerology.
  • TTI refers to, for example, the minimum time unit for scheduling in wireless communication.
  • a base station performs scheduling to allocate radio resources (frequency bandwidth, transmission power, etc. that can be used by each terminal 20) to each terminal 20 on a TTI basis.
  • radio resources frequency bandwidth, transmission power, etc. that can be used by each terminal 20
  • TTI is not limited to this.
  • the TTI may be a transmission time unit of a channel-coded data packet (transport block), a code block, a codeword, etc., or may be a processing unit of scheduling, link adaptation, etc. Note that when a TTI is given, the time interval (for example, the number of symbols) to which transport blocks, code blocks, code words, etc. are actually mapped may be shorter than the TTI.
  • one slot or one minislot is called a TTI
  • one or more TTIs may be the minimum time unit for scheduling.
  • the number of slots (minislot number) that constitutes the minimum time unit of the scheduling may be controlled.
  • a TTI having a time length of 1 ms may be called a normal TTI (TTI in LTE Rel. 8-12), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, etc.
  • TTI that is shorter than the normal TTI may be referred to as an abbreviated TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.
  • long TTI for example, normal TTI, subframe, etc.
  • short TTI for example, short TTI, etc. It may also be read as a TTI having the above TTI length.
  • a resource block is a resource allocation unit in the time domain and frequency domain, and may include one or more continuous subcarriers in the frequency domain.
  • the number of subcarriers included in an RB may be the same regardless of the numerology, and may be 12, for example.
  • the number of subcarriers included in an RB may be determined based on newerology.
  • the time domain of an RB may include one or more symbols, and may be one slot, one minislot, one subframe, or one TTI in length.
  • One TTI, one subframe, etc. may each be composed of one or more resource blocks.
  • one or more RBs include physical resource blocks (PRBs), sub-carrier groups (SCGs), resource element groups (REGs), PRB pairs, RB pairs, etc. May be called.
  • PRBs physical resource blocks
  • SCGs sub-carrier groups
  • REGs resource element groups
  • PRB pairs RB pairs, etc. May be called.
  • a resource block may be configured by one or more resource elements (REs).
  • REs resource elements
  • 1 RE may be a radio resource region of 1 subcarrier and 1 symbol.
  • a bandwidth part (which may also be called a partial bandwidth or the like) may represent a subset of consecutive common resource blocks (RBs) for a certain numerology in a certain carrier.
  • the common RB may be specified by an RB index based on a common reference point of the carrier.
  • PRBs may be defined in a BWP and numbered within that BWP.
  • the BWP may include a UL BWP (UL BWP) and a DL BWP (DL BWP).
  • UL BWP UL BWP
  • DL BWP DL BWP
  • One or more BWPs may be configured within one carrier for a UE.
  • 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 of the active BWP.
  • “cell”, “carrier”, etc. in the present disclosure may be replaced with "BWP”.
  • radio frames, subframes, slots, minislots, symbols, etc. described above are merely examples.
  • 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 symbols included in an RB, Configurations such as the number of subcarriers, the number of symbols in a TTI, the symbol length, and the cyclic prefix (CP) length can be changed in various ways.
  • a and B are different may mean “A and B are different from each other.” Note that the term may also mean that "A and B are each different from C”. Terms such as “separate” and “coupled” may also be interpreted similarly to “different.”
  • notification of prescribed information is not limited to being done explicitly, but may also be done implicitly (for example, not notifying the prescribed information). Good too.
  • Base station 110 Transmitting section 120 Receiving section 130 Setting section 140 Control section 20 Terminal 210 Transmitting section 220 Receiving section 230 Setting section 240 Control section 1001 Processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication device 1005 Input device 1006 Output device 2001 Vehicle 2002 Driving part 2003 Restoration Part 2004 Axel Pedal 2005 Brake Pedal 2006 Shift Lever 2007 Front wheels 2008 Bearing 2009 Axis 2010 Electronic Control Division 2012 Electronic Control Division 20133 Communication Modular 2021 Current sensor 2022 Round Sensor 2023 Air pressure sensor 2024 vehicle speed Sensen Sa 2025 acceleration sensor 2026 brake Pedal sensor 2027 Shift lever sensor 2028 Object detection sensor 2029 Accelerator pedal sensor 2030 Driving support system section 2031 Microprocessor 2032 Memory (ROM, RAM) 2033 Communication port (IO port)

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Le présent terminal comprend : une unité de communication qui, dans un état de réception périodique, détermine qu'une transmission de signal ou une réception de signal, pour un positionnement, ne peut pas être effectuée en raison d'une restriction de synchronisation d'émission/réception de signal; et une unité de commande qui suppose qu'un message indiquant que la transmission de signal ou la réception de signal ne peut pas être effectuée est transmis d'une station de base à un dispositif de réseau.
PCT/JP2022/019193 2022-04-27 2022-04-27 Terminal et station de base WO2023209908A1 (fr)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210050978A1 (en) * 2019-08-12 2021-02-18 Qualcomm Incorporated Interaction of discontinuous reception (drx) with positioning reference signal (prs) resources
WO2022030488A1 (fr) * 2020-08-05 2022-02-10 三菱電機株式会社 Système de communication et station de base
US20220053424A1 (en) * 2020-08-14 2022-02-17 Qualcomm Incorporated Positioning reference signal (prs) bundling across multiple discontinuous reception (multi-drx) groups

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210050978A1 (en) * 2019-08-12 2021-02-18 Qualcomm Incorporated Interaction of discontinuous reception (drx) with positioning reference signal (prs) resources
WO2022030488A1 (fr) * 2020-08-05 2022-02-10 三菱電機株式会社 Système de communication et station de base
US20220053424A1 (en) * 2020-08-14 2022-02-17 Qualcomm Incorporated Positioning reference signal (prs) bundling across multiple discontinuous reception (multi-drx) groups

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Title
INTERDIGITAL INC.: "Discussion on Positioning in RRC INACTIVE state", 3GPP TSG RAN WG2 #116BIS-E R2-2201186, 11 January 2022 (2022-01-11), XP052094288 *

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