WO2021024333A1 - Terminal and communication method - Google Patents

Terminal and communication method Download PDF

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Publication number
WO2021024333A1
WO2021024333A1 PCT/JP2019/030609 JP2019030609W WO2021024333A1 WO 2021024333 A1 WO2021024333 A1 WO 2021024333A1 JP 2019030609 W JP2019030609 W JP 2019030609W WO 2021024333 A1 WO2021024333 A1 WO 2021024333A1
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Prior art keywords
terminal
grant
rrc
rrc connection
unit
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PCT/JP2019/030609
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French (fr)
Japanese (ja)
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WO2021024333A9 (en
Inventor
翔平 吉岡
聡 永田
ヤンル ワン
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株式会社Nttドコモ
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Priority to PCT/JP2019/030609 priority Critical patent/WO2021024333A1/en
Publication of WO2021024333A1 publication Critical patent/WO2021024333A1/en
Publication of WO2021024333A9 publication Critical patent/WO2021024333A9/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/30Connection release

Definitions

  • the present invention relates to a terminal (user device) and a communication method in a wireless communication system.
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution Advanced
  • NR New Radio
  • 5G New Radio
  • SAlink Sidelink
  • D2D Device to Device
  • the following channels are included in the channels for direct communication between terminals used in direct communication between terminals (side link technology).
  • the channel for transmitting control information such as SCI (Siderink Control Information) is referred to as PSCCH (Physical Sidelink Control Channel), and the channel for transmitting data is referred to as PSCH (Physical Sidelink Sharp Channel).
  • PSCCH Physical Sidelink Control Channel
  • PSCH Physical Sidelink Sharp Channel
  • V2X Vehicle to Everything
  • HARQ Hybrid Automatic Repeat
  • HARQ Hybrid Automatic Repeat
  • SFCI Supplemental Feedback
  • DM-RS Demodulation Reference Signal
  • CSI-RS Channel State Information Reference Signal
  • the DM-RS is a reference signal used for demodulation of, for example, PSCCH, PSCH, and PSBCH (Physical Sidelink Broadcast Channel).
  • DM-RS may be used for demodulation of PSFCH.
  • CSI-RS is a reference signal used for, for example, reporting channel state information, RLM (Radio Link Monitoring), and RLF (Radio Link Failure).
  • the present invention has been made in view of the above points, and an object of the present invention is to provide a technique for defining the operation of side link setting when performing processing related to RRC connection control such as RRC connection reestablishment. To do.
  • the present invention is not limited to terminal-to-terminal communication in V2X, and may be applied to any terminal.
  • the present invention is not limited to the case of reestablishing the RRC connection, and may be applied to any case related to the RRC connection control.
  • RRC_CONCEPTED RRC connection
  • RRC_IDLE RRC non-connection
  • RRC_INACTIVE transition from RRC connection pause to RRC non-connection
  • application of handover etc. May be good.
  • RRC_CONCEPTED RRC connection
  • RRC_IDLE transition from RRC connection to RRC connection pause
  • RRC_INACTIVE transition from RRC connection pause to RRC non-connection
  • application of handover etc.
  • control unit has a control unit that performs processing related to RRC (Radio Resource Control) connection control, and the control unit has a side link that has been set when performing processing related to the RRC connection control.
  • a terminal is provided that determines whether to clear the grant or suspend it temporarily.
  • a technology for defining the operation regarding the side link setting when performing processing related to RRC connection control such as RRC connection reestablishment is provided.
  • FIG. 1 is a diagram for explaining four types of side link transmission modes in NR-V2X.
  • the transmission mode may be called a resource allocation mode, and is not limited to this.
  • the terminal 20A transmits PSCCH / PSCH to the terminal 20B based on the SL scheduling by the base station apparatus 10.
  • the side link transmission mode 2 of NR-V2X PSCCH / PSCH transmission is performed based on the resource selection of the terminal 20 itself.
  • the side link transmission mode 2 of the NR-V2X is further subdivided.
  • the terminal 20A has a PSCCH with respect to the terminal 20B based on the resource selection of the terminal 20A itself.
  • / PSSCH is transmitted, and the terminal 20B transmits PSCCH / PSCH to the terminal A based on the resource selection of the terminal 20B itself.
  • the terminal 20A sets the terminal 20B according to the resource pattern (reserve pattern) notified from the base station apparatus 10, specified by the specifications, or set in advance. PSSCH is transmitted to.
  • the terminal 20A performs scheduling for transmission of the terminal 20B by transmitting SL scheduling to the terminal 20B, and the terminal 20B is based on the scheduling.
  • PSCCH / PSSCH is transmitted to the terminal 20A.
  • FIG. 2 is a diagram for explaining the operation at the time of RLF detection in LTE.
  • the terminal 20 detects the RLF in step S100.
  • the terminal 20 starts reestablishing the RRC connection in step S110.
  • the terminal 20 starts the timer T311, resets the MAC, and applies the default physical channel setting (in other words, the setting before applying the default physical channel setting in the RRC layer). Do not use), perform cell selection.
  • the default physical channel setting in other words, the setting before applying the default physical channel setting in the RRC layer. Do not use
  • the terminal 20 In the above MAC reset, the terminal 20 considers that all the time alignment timers (timeAlignmentTimers) have expired, and executes an operation corresponding to the expiration. As an operation corresponding to the expiration, the terminal 20 clears all the set downlink allocations and uplink grants. When the time alignment timer is not operating, the MAC entity of the terminal 20 must not perform sidelink transmission.
  • timeAlignmentTimers timeAlignmentTimers
  • the terminal 20 applies a common time alignment timer (timeAlignmentTimerComon) in SIB2 and starts transmitting an RRC connection reestablishment request message (RRCCconnectionRestationRequestrequest message).
  • timeAlignmentTimerComon a common time alignment timer
  • RRCCconnectionRestationRequestrequest message an RRC connection reestablishment request message
  • step S110 the terminal 20 receives a timing advance command (Timement Advance Command) in a random access response message for a serving cell belonging to a predetermined TAG (Time Advance Group), and has a time alignment associated with the TAG. If the timer is not operating, the timing advance command is applied to the TAG to start the time alignment timer associated with the TAG.
  • a timing advance command (Timement Advance Command) in a random access response message for a serving cell belonging to a predetermined TAG (Time Advance Group)
  • TAG Time Advance Group
  • step S120 the terminal 20 leaves the RRC connection state (RRC_CONCEPTED).
  • RRC_CONCEPTED the terminal 20 resets the MAC, releases all the radio resources, and transitions to the RRC idle state (RRC_IDLE).
  • RRC_IDLE the RRC idle state
  • the configured SL grant is not released. Therefore, after the cell is selected (or after receiving the random access response) and before the timer T311 expires, the time alignment timer is operating as described above, so that the MAC entity of the terminal 20 is based on the set SL grant. It seems that SL transmission can be performed.
  • FIG. 3 is a diagram for explaining the operation at the time of RLF detection in NR.
  • the terminal 20 detects the RLF in step S200.
  • the terminal 20 starts reestablishing the RRC connection in step S210.
  • the terminal 20 starts the timer T311 as the operation of reestablishing the RRC connection, resets the MAC, and releases the parameter spCellConfiguration (in other words, all the RRC settings (RRC configuration) are released). Perform cell selection.
  • the terminal 20 In the above MAC reset, the terminal 20 considers that all the time alignment timers (timeAlignmentTimers) have expired, and executes an operation corresponding to the expiration. As an operation corresponding to the expiration, the terminal 20 clears all the set downlink allocations and uplink grants.
  • timeAlignmentTimerCommon timeAlignmentTimerCommon
  • SIB1 timeAlignmentTimerCommon
  • step S210 the terminal 20 receives a timing advance command (Timement Advance Command) in a random access response message for a serving cell belonging to a predetermined TAG (Time Advance Group), and has a time alignment associated with the TAG. If the timer is not operating, the timing advance command is applied to the TAG to start the time alignment timer associated with the TAG.
  • a timing advance command (Timement Advance Command) in a random access response message for a serving cell belonging to a predetermined TAG (Time Advance Group)
  • TAG Time Advance Group
  • step S220 if the timer T311 expires before the cell selection is successful, the terminal 20 transitions to the RRC idle state (RRC_IDLE). Here, the terminal 20 resets the MAC, releases all radio resources, and transitions to the RRC idle state (RRC_IDLE). If the RRC connection reestablishment is successful before the timer T311 expires, the terminal 20 maintains the RRC connection state and shifts to the communication procedure in the RRC connection state.
  • the MAC entity of the terminal 20 executes SL transmission based on the set SL grant after cell selection (or after receiving a random access response) and before the expiration of timer T311. What can be done is not considered desirable for base station equipment 10 (gNB). This is because SL transmission based on the SL grant already set can cause undesired interference.
  • the set SL grant may be released or cleared.
  • the terminal 20 may clear all the configured downlink allocations and uplink grants, and may clear all or some of the configured SL grants.
  • the implementation of the terminal 20 becomes easy by defining the same operation as the operation for the downlink and the uplink for the SL grant.
  • the operation of the set SL grant may be temporarily stopped (suspend).
  • the first predetermined timing (X) may be the time of RLF, the time of stopping the time alignment timer, or the time of starting RRC connection reestablishment.
  • the second predetermined timing (Y) may be at the end of cell selection, at the completion of RRC connection reestablishment, or at the time of receiving SIB for SL communication. It may be at the time of receiving the RRC parameter for SL communication.
  • the set SL grant can be continuously used after the RRC connection is reestablished. ..
  • the RRC parameter for SL may be released.
  • the parameter spCellConfig including the parameter sidelinkConfig related to the side link setting may be released.
  • the implementation of the terminal 20 becomes easy by defining the same operation as the operation for the downlink and uplink parameters for the parameter for SL.
  • the RRC parameter for SL may be temporarily invalidated.
  • the first predetermined timing (X) may be the time of RLF, the time of stopping the time alignment timer, or the time of starting RRC connection reestablishment.
  • the second predetermined timing (Y) may be at the end of cell selection, at the completion of RRC connection reestablishment, or at the time of receiving SIB for SL communication. It may be at the time of receiving the RRC parameter for SL communication.
  • the RRC parameter is temporarily invalidated in this way, it is possible that the set SL grant can be continued to be used after the RRC connection is reestablished.
  • the set SL grant is released as shown in the following (1), (2), (3), and (4) from the viewpoint of at least one of the viewpoint of the RRC layer and the viewpoint of the MAC layer.
  • (1) Whether or not to release the set SL grant may be determined based on the carrier. For example, if the carrier of the set SL grant is a licensed carrier, the set SL grant is released / cleared, and if it is an unlicensed carrier, the set SL grant is released. It does not have to be released / cleared.
  • the set SL grant carrier is an uplink / downlink / sidelink shared carrier
  • the set SL grant is released / cleared, and if it is a sidelink dedicated carrier, it is already set. It is not necessary to release / clear the SL grant of.
  • Carriers may be replaced by bands or frequency ranges or component carriers.
  • Whether or not to release the set SL grant may be specified based on the resource pool.
  • FIG. 4 and 5 are diagrams showing an example of operation based on the resource pool.
  • the SL grant when the SL grant is set in the preset resource pool or the common resource pool, the SL grant is not cleared after the RRC connection is reestablished, and the SL grant is not cleared. If it is set in the set resource pool instead of the preset or common resource pool (because it is considered that a different resource pool will be set after the RRC connection is reestablished), the SL grant will be You may clear it.
  • the configured SL grant is included in a preset resource pool, a common resource pool, or a newly configured resource pool (after reestablishing the RRC connection), clear the SL grant. If not (if the configured SL grant is not included in the preset resource pool, the common resource pool, or the newly configured resource pool), the SL You may clear the grant. As shown in FIG. 5, when a part of the set resource pool overlaps with the common resource pool and the set SL grant is included in the part of the set resource pool that overlaps with the common resource pool. Since the SL grant that has already been set is included in the common resource pool even after the RRC connection is reestablished, it is not necessary to clear it.
  • Whether or not to release the set SL grant may be specified according to the result of the cell search. For example, as a result of the cell search, if a connection with the same cell as the cell in which the SL grant is set is established, the SL grant is not cleared, otherwise (different from the cell in which the SL grant is set). The SL grant may be cleared (if a connection with the cell is established).
  • Whether or not to release the set SL grant may be specified according to the transmission mode (resource allocation mode). For example, if the transmission mode 2 is available, the set SL grant may be cleared, and if the transmission mode 2 is not available, the set SL grant may not be cleared. Further, when the SL grant is set for the transmission mode 1, the SL grant may be cleared, and when the SL grant is set for the transmission mode 2, the SL grant may not be cleared.
  • clearing can mean “clearing all or part of the sidelink grant”.
  • side link grant can be replaced with “upper layer parameters for side links”.
  • clear and release may be interchanged with each other.
  • Suspending and Invalidate may be interchanged with each other.
  • the base station apparatus 10 and the terminal 20 include a function of carrying out the above-described embodiment.
  • the base station apparatus 10 and the terminal 20 may each have only a part of the functions in the embodiment.
  • FIG. 6 is a diagram showing an example of the functional configuration of the base station apparatus 10.
  • the base station apparatus 10 includes a transmission unit 110, a reception unit 120, a setting unit 130, and a control unit 140.
  • the functional configuration shown in FIG. 6 is only an example. Any function classification and name of the functional unit may be used as long as the operation according to the embodiment of the present invention can be executed.
  • the transmission unit 110 includes a function of generating a signal to be transmitted to the terminal 20 side and transmitting the signal wirelessly. Further, the transmission unit 110 transmits information such as SL scheduling to the terminal 20.
  • the receiving unit 120 includes a function of receiving various signals transmitted from the terminal 20 and acquiring information of, for example, a higher layer from the received signals.
  • the setting unit 130 stores preset setting information and various setting information to be transmitted to the terminal 20 in the storage device, and reads the setting information from the storage device as needed.
  • the content of the setting information is, for example, information related to the setting of V2X.
  • control unit 140 performs processing related to the setting for the terminal 20 to perform V2X. Further, the function unit related to signal transmission in the control unit 140 may be included in the transmission unit 110, and the function unit related to signal reception in the control unit 140 may be included in the reception unit 120.
  • FIG. 7 is a diagram showing an example of the functional configuration of the terminal 20.
  • the terminal 20 has a transmission unit 210, a reception unit 220, a setting unit 230, and a control unit 240.
  • the functional configuration shown in FIG. 7 is only an example. Any function classification and name of the functional unit may be used as long as the operation according to the embodiment of the present invention can be executed.
  • the transmission unit 210 creates a transmission signal from the transmission data and wirelessly transmits the transmission signal.
  • the receiving unit 220 wirelessly receives various signals and acquires a signal of a higher layer from the received signal of the physical layer.
  • the transmission unit 210 transmits the side link CSI-RS and DM-RS to the other terminal 20.
  • the receiving unit 220 has a function of receiving the SL scheduling transmitted from the base station apparatus 10.
  • the receiving unit 220 receives the side link CSI-RS and DM-RS from the other terminal 20.
  • the setting unit 230 stores various setting information received from the base station device 10 or the terminal 20 by the receiving unit 220 in the storage device, and reads it out from the storage device as needed.
  • the setting unit 230 also stores preset setting information.
  • the content of the setting information is, for example, information related to CSI-RS and DM-RS of the side link.
  • the control unit 240 controls the D2D communication executed with the other terminal 20 as described in the embodiment. In addition, the control unit 240 executes a wireless access procedure with another terminal 20.
  • the function unit related to signal transmission in the control unit 240 may be included in the transmission unit 210, and the function unit related to signal reception in the control unit 240 may be included in the reception unit 220.
  • each functional block may be realized by one device in which a plurality of elements are physically and / or logically combined, or two or more devices physically and / or logically separated from each other directly and. / Or indirectly (eg, wired and / or wireless) may be connected and realized by these plurality of devices.
  • FIG. 8 is a diagram showing an example of the hardware configuration of the wireless communication device which is the base station device 10 or the terminal 20 according to the embodiment of the present invention.
  • the above-mentioned base station device 10 and terminal 20 are physically configured as computer devices 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, and the like. May be done.
  • the word “device” can be read as a circuit, device, unit, etc.
  • the hardware configuration of the base station device 10 and the terminal 20 may be configured to include one or more of the devices shown by 1001 to 1006 shown in the figure, or may be configured not to include some of the devices. You may.
  • the processor 1001 For each function of the base station device 10 and the terminal 20, the processor 1001 performs an operation by loading predetermined software (program) on the hardware such as the processor 1001 and the storage device 1002, and the communication device 1004 communicates and stores the data. It is realized by controlling the reading and / or writing of data in the device 1002 and the auxiliary storage device 1003.
  • the processor 1001 operates, for example, an operating system to control the entire computer.
  • the processor 1001 may be composed of a central processing unit (CPU: Central Processing Unit) including an interface with a peripheral device, a control device, an arithmetic unit, a register, and the like.
  • CPU Central Processing Unit
  • the processor 1001 reads a program (program code), a software module or data from the auxiliary storage device 1003 and / or the communication device 1004 into the storage device 1002, and executes various processes according to these.
  • a program program code
  • the program a program that causes a computer to execute at least a part of the operations described in the above-described embodiment is used.
  • the transmission unit 110, the reception unit 120, the setting unit 130, and the control unit 140 of the base station device 10 shown in FIG. 6 may be stored in the storage device 1002 and realized by a control program that operates in the processor 1001. Further, for example, even if the transmission unit 210, the reception unit 220, the setting unit 230, and the control unit 240 of the terminal 20 shown in FIG.
  • Processor 1001 may be mounted on one or more chips.
  • the program may be transmitted from the network via a telecommunication line.
  • the storage device 1002 is a computer-readable recording medium, and is, for example, at least one such as a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), an EEPROM (Electrically Erasable Programmable ROM), and a RAM (Random Access Memory). It may be configured.
  • the storage device 1002 may be referred to as a register, a cache, a main memory (main storage device), or the like.
  • the storage device 1002 can store a program (program code), a software module, or the like that can be executed to carry out the process according to the embodiment of the present invention.
  • the auxiliary storage device 1003 is a computer-readable recording medium, and is, for example, an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, an optical magnetic disk (for example, a compact disk, a digital versatile disk, Blu).
  • -It may be composed of at least one of a ray (registered trademark) disk), a smart card, a flash memory (for example, a card, a stick, a key drive), a floppy (registered trademark) disk, a magnetic strip, and the like.
  • the auxiliary storage device 1003 may be referred to as an auxiliary storage device.
  • the storage medium described above may be, for example, a database, server or other suitable medium containing the storage device 1002 and / or the auxiliary storage device 1003.
  • the communication device 1004 is hardware (transmission / reception device) for communicating between computers via a wired and / or wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, or the like.
  • the transmission unit 110 and the reception unit 120 of the base station device 10 may be realized by the communication device 1004.
  • the transmission unit 210 and the reception unit 220 of the terminal 20 may be realized by the communication device 1004.
  • the input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives an input from the outside.
  • the output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that outputs to the outside.
  • 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 composed of a single bus or may be composed of different buses between the devices.
  • the base station device 10 and the terminal 20 are a microprocessor, a digital signal processor (DSP: Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), an FPGA (Field Programmable Gate Array), etc., respectively. It may be configured to include hardware, and the hardware may realize a part or all of each functional block. For example, processor 1001 may be implemented on at least one of these hardware.
  • a control unit that generates a sequence corresponding to a sequence of reference signals between base station terminals and a reference signal having the generated sequence are transmitted to other terminals.
  • a terminal having a transmitter and a terminal to be provided is provided.
  • the above configuration provides a technique for defining a reference signal in the NR side link (NR-SL).
  • the boundary of the functional unit or the processing unit in the functional block diagram does not always correspond to the boundary of the physical component.
  • the operation of the plurality of functional units may be physically performed by one component, or the operation of one functional unit may be physically performed by a plurality of components. With respect to the processing procedure described in the embodiment, the order of processing may be changed as long as there is no contradiction.
  • the base station device 10 and the terminal 20 have been described with reference to functional block diagrams, but such devices may be implemented in hardware, software, or a combination thereof.
  • the software operated by the processor of the base station apparatus 10 according to the embodiment of the present invention and the software operated by the processor of the terminal 20 according to the embodiment of the present invention are random access memory (RAM), flash memory, and read-only, respectively. It may be stored in a memory (ROM), EPROM, EEPROM, registers, hard disk (HDD), removable disk, CD-ROM, database, server or any other suitable storage medium.
  • information notification includes physical layer signaling (for example, DCI (Downlink Control Information), UCI (Uplink Control Information)), higher layer signaling (for example, RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, etc. Broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals or a combination thereof may be used.
  • RRC signaling may be referred to as an RRC message, for example, RRC. It may be a connection setup (RRCConnectionSetup) message, an RRC connection reconfiguration (RRCConnectionReconfiguration) message, or the like.
  • Each aspect / embodiment described in the present specification includes LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G, 5G, FRA (Future Radio Access), W-CDMA. (Registered Trademarks), GSM (Registered Trademarks), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, UWB (Ultra-WideBand), It may be applied to systems utilizing Bluetooth®, other suitable systems and / or next-generation systems extended based on them.
  • the specific operation performed by the base station apparatus 10 in the present specification may be performed by its upper node (upper node).
  • various operations performed for communication with the terminal 20 are performed other than the base station device 10 and / or the base station device 10. It is clear that it can be done by other network nodes (eg, MME or S-GW, etc., but not limited to these).
  • MME or S-GW network nodes
  • the case where there is one network node other than the base station apparatus 10 is illustrated above, it may be a combination of a plurality of other network nodes (for example, MME and S-GW).
  • the terminal 20 may be a user device, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, or a mobile device by a person skilled in the art. It may also be referred to as a terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.
  • the base station apparatus 10 may be referred to by those skilled in the art by NB (NodeB), eNB (evolvedNodeB), gNB, BaseStation, or some other suitable term.
  • NB NodeB
  • eNB evolvedNodeB
  • gNB BaseStation
  • determining and “determining” used in this specification may include a wide variety of actions.
  • “Judgment” and “decision” are, for example, judgment (judging), calculation (calculating), calculation (computing), processing (processing), derivation (deriving), investigating (investigating), searching (looking up) (for example, table , Searching in a database or another data structure), confirming (ascertaining) may be regarded as “judgment” or “decision”.
  • judgment and “decision” are receiving (for example, receiving information), transmitting (for example, transmitting information), input (input), output (output), and access.
  • (Accessing) for example, accessing data in memory) may be regarded as "judgment” or “decision”.
  • judgment and “decision” mean that “resolving”, “selecting”, “choosing”, “establishing”, “comparing”, etc. are regarded as “judgment” and “decision”. Can include. That is, “judgment” and “decision” may include that some action is regarded as “judgment” and “decision”.
  • Base station device 110 Transmission unit 120 Reception unit 130 Setting unit 140 Control unit 20 Terminal 210 Transmission unit 220 Reception unit 230 Setting unit 240 Control unit 1001 Processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication device 1005 Input device 1006 Output device

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Abstract

The present invention provides a terminal having a control unit that performs processing related to radio resource control (RRC) connection control. When performing the processing related to the RRC connection control, the control unit determines whether or not to clear or temporarily stop a set sidelink grant.

Description

端末及び通信方法Terminal and communication method
 本発明は、無線通信システムにおける端末(ユーザ装置)及び通信方法に関連するものである。 The present invention relates to a terminal (user device) and a communication method in a wireless communication system.
 LTE(Long Term Evolution)及びLTEの後継システム(例えば、LTE-A(LTE Advanced)、NR(New Radio)(5Gとも呼ぶ))では、UE等の通信装置同士が基地局gNBを介さないで直接通信を行うサイドリンク(Sidelink(SL))(Device to Device(D2D))とも呼ぶ)技術が検討されている(非特許文献1)。 In LTE (Long Term Evolution) and LTE successor systems (for example, LTE-A (LTE Advanced), NR (New Radio) (also called 5G)), communication devices such as UEs directly communicate with each other without going through the base station gNB. A side link (Sidelink (SL)) (also called Device to Device (D2D)) technology for communicating is being studied (Non-Patent Document 1).
 端末間直接通信(サイドリンク技術)において使用される端末間直接通信用チャネルには以下のチャネルが含まれる。 The following channels are included in the channels for direct communication between terminals used in direct communication between terminals (side link technology).
 SCI(Sidelink Contol Information)等の制御情報を送信するチャネルはPSCCH(Physical Sidelink Control Channel)と称され、データを送信するチャネルはPSSCH(Physical Sidelink Shared Channel)と称される。また、NRのV2X(Vehicle to Everything)では、PSCCH及びPSCCHに対するHARQ(Hybrid Automatic Repeat Request)動作をサポートすることが規定されており、HARQ-ACKを含む端末間直接通信フィードバック制御情報(Sidelink Feedback Control Information(SFCI))が定義されている。SFCIは、端末間直接通信フィードバックチャネル(Physical Sidelink Feedback Channel(PSFCH))上で送信される。 The channel for transmitting control information such as SCI (Siderink Control Information) is referred to as PSCCH (Physical Sidelink Control Channel), and the channel for transmitting data is referred to as PSCH (Physical Sidelink Sharp Channel). Further, V2X (Vehicle to Everything) of NR is defined to support HARQ (Hybrid Automatic Repeat) operation for PSCCH and PSCCH, and direct communication feedback control information (Sidelink Feedback) between terminals including HARQ-ACK is specified. Information (SFCI)) is defined. The SFCI is transmitted on the terminal-to-terminal direct communication feedback channel (Physical Sidelink Feedback Channel (PSFCH)).
 NRのサイドリンク(NR-SL)において、DM-RS(Demodulation Reference Signal)およびCSI-RS(Channel State Information Reference Signal)を送信することが検討されている。DM-RSは、例えば、PSCCH、PSSCH、PSBCH(Physical Sidelink Broadcast Channel)の復調(demodulation)のために用いられる参照信号である。DM-RSは、PSFCHの復調に用いられてもよい。CSI-RSは、例えば、チャネル状態情報の報告、RLM(Radio Link Monitoring)やRLF(Radio Link Failure)のために用いられる参照信号である。 It is being considered to transmit DM-RS (Demodulation Reference Signal) and CSI-RS (Channel State Information Reference Signal) on the side link (NR-SL) of NR. The DM-RS is a reference signal used for demodulation of, for example, PSCCH, PSCH, and PSBCH (Physical Sidelink Broadcast Channel). DM-RS may be used for demodulation of PSFCH. CSI-RS is a reference signal used for, for example, reporting channel state information, RLM (Radio Link Monitoring), and RLF (Radio Link Failure).
 RLFが検出されてRRC接続再確立が行われる際には、下りリンクの割当て、および、上りリンクのgrant(uplink grant)をクリア(clear)することが規定されている。しかしながら、サイドリンクの設定(Sidelink(SL) configuration)の扱いについては、明示的には規定されていない。 When RLF is detected and RRC connection is reestablished, it is stipulated that the downlink is allocated and the uplink grant is cleared. However, the handling of side link settings (Sidelink (SL) configuration) is not explicitly specified.
 本発明は上記の点に鑑みてなされたものであり、RRC接続再確立等のRRC接続制御に関連する処理を行う際の、サイドリンク設定についての動作を規定する技術を提供することを目的とする。なお、本発明はV2Xにおける端末間通信に限られず、いかなる端末に適用されてもよい。なお、本発明はRRC接続再確立の場合に限られず、RRC接続制御に関連する、いかなるケースに適用されてもよい。例えば、RRC接続(RRC_CONNECTED)からRRC非接続(RRC_IDLE)への遷移、RRC接続からRRC接続休止(RRC_INACTIVE)への遷移、RRC接続休止からRRC非接続への遷移、ハンドオーバの適用などに適用されてもよい。以下では、便宜上RRC接続再確立の場合として記載する。 The present invention has been made in view of the above points, and an object of the present invention is to provide a technique for defining the operation of side link setting when performing processing related to RRC connection control such as RRC connection reestablishment. To do. The present invention is not limited to terminal-to-terminal communication in V2X, and may be applied to any terminal. The present invention is not limited to the case of reestablishing the RRC connection, and may be applied to any case related to the RRC connection control. For example, it is applied to the transition from RRC connection (RRC_CONCEPTED) to RRC non-connection (RRC_IDLE), transition from RRC connection to RRC connection pause (RRC_INACTIVE), transition from RRC connection pause to RRC non-connection, application of handover, etc. May be good. In the following, for convenience, the case of reestablishing the RRC connection will be described.
 開示の技術によれば、RRC(Radio Resource Control)接続制御に関連する処理を行う制御部を有し、前記制御部は、前記RRC接続制御に関連する処理を行う際に、設定済みのサイドリンクグラントをクリアする又は一時的に停止するか否かを決定する、端末が提供される。 According to the disclosed technique, the control unit has a control unit that performs processing related to RRC (Radio Resource Control) connection control, and the control unit has a side link that has been set when performing processing related to the RRC connection control. A terminal is provided that determines whether to clear the grant or suspend it temporarily.
 開示の技術によれば、RRC接続再確立等のRRC接続制御に関連する処理を行う際の、サイドリンク設定についての動作を規定する技術が提供される。 According to the disclosed technology, a technology for defining the operation regarding the side link setting when performing processing related to RRC connection control such as RRC connection reestablishment is provided.
NR-V2Xにおける4種類のサイドリンク送信モードを説明するための図である。It is a figure for demonstrating four kinds of side link transmission modes in NR-V2X. LTEにおけるRLF検出時の動作を説明するための図である。It is a figure for demonstrating the operation at the time of RLF detection in LTE. NRにおけるRLF検出時の動作を説明するための図である。It is a figure for demonstrating the operation at the time of RLF detection in NR. 本発明の実施形態におけるリソースプールに基づく動作の一例を示す図である。It is a figure which shows an example of the operation based on the resource pool in embodiment of this invention. 本発明の実施形態におけるリソースプールに基づく動作の一例を示す図である。It is a figure which shows an example of the operation based on the resource pool in embodiment of this invention. 実施形態に係る基地局装置10の機能構成の一例を示す図である。It is a figure which shows an example of the functional structure of the base station apparatus 10 which concerns on embodiment. 実施形態に係る端末20の機能構成の一例を示す図である。It is a figure which shows an example of the functional structure of the terminal 20 which concerns on embodiment. 実施形態に係る基地局装置10及び端末20のハードウェア構成の一例を示す図である。It is a figure which shows an example of the hardware composition of the base station apparatus 10 and the terminal 20 which concerns on embodiment.
 以下、図面を参照して本発明の実施形態を説明する。なお、以下で説明する実施形態は一例に過ぎず、本発明が適用される実施形態は、以下の実施形態に限られるわけではない。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that the embodiments described below are merely examples, and the embodiments to which the present invention is applied are not limited to the following embodiments.
 (サイドリンク送信モード)
 NR-V2Xにおけるサイドリンク送信モードについて説明する。
(Side link transmission mode)
The side link transmission mode in NR-V2X will be described.
 図1は、NR-V2Xにおける4種類のサイドリンク送信モードを説明するための図である。なお、送信モードはリソース割り当てモードと呼ばれてもよいし、これに限られない。 FIG. 1 is a diagram for explaining four types of side link transmission modes in NR-V2X. The transmission mode may be called a resource allocation mode, and is not limited to this.
 NR-V2Xのサイドリンク送信モード1では、端末20Aは、基地局装置10によるSLスケジューリングに基づいて、端末20Bに対してPSCCH/PSSCHを送信する。 In the side link transmission mode 1 of the NR-V2X, the terminal 20A transmits PSCCH / PSCH to the terminal 20B based on the SL scheduling by the base station apparatus 10.
 NR-V2Xのサイドリンク送信モード2では、端末20自身のリソース選択に基づいてPSCCH/PSSCHの送信が行われる。NR-V2Xのサイドリンク送信モード2はさらに細分化されており、NR-V2Xのサイドリンク送信モード2-aでは、端末20Aは、端末20A自身のリソース選択に基づいて、端末20Bに対してPSCCH/PSSCHを送信し、また、端末20Bは、端末20B自身のリソース選択に基づいて、端末Aに対してPSCCH/PSSCHを送信する。NR-V2Xのサイドリンク送信モード2-cでは、基地局装置10から通知される、または仕様で決められた、または、あらかじめ設定された、リソースパターン(resource pattern)に従って、端末20Aは、端末20Bに対してPSSCHを送信する。 In the side link transmission mode 2 of NR-V2X, PSCCH / PSCH transmission is performed based on the resource selection of the terminal 20 itself. The side link transmission mode 2 of the NR-V2X is further subdivided. In the side link transmission mode 2-a of the NR-V2X, the terminal 20A has a PSCCH with respect to the terminal 20B based on the resource selection of the terminal 20A itself. / PSSCH is transmitted, and the terminal 20B transmits PSCCH / PSCH to the terminal A based on the resource selection of the terminal 20B itself. In the side link transmission mode 2-c of the NR-V2X, the terminal 20A sets the terminal 20B according to the resource pattern (reserve pattern) notified from the base station apparatus 10, specified by the specifications, or set in advance. PSSCH is transmitted to.
 NR-V2Xのサイドリンク送信モード2-dでは、端末20Aは、端末20Bに対してSL schedulingを送信することにより、端末20Bの送信のためのスケジューリングを行い、端末20Bは、そのスケジューリングに基づいて、端末20Aに対してPSCCH/PSSCHを送信する。 In the side link transmission mode 2-d of NR-V2X, the terminal 20A performs scheduling for transmission of the terminal 20B by transmitting SL scheduling to the terminal 20B, and the terminal 20B is based on the scheduling. , PSCCH / PSSCH is transmitted to the terminal 20A.
 (RLF検出時の処理:LTE)
 LTEにおけるRLF検出時の処理について説明する。
(Processing when RLF is detected: LTE)
The processing at the time of RLF detection in LTE will be described.
 図2は、LTEにおけるRLF検出時の動作を説明するための図である。 FIG. 2 is a diagram for explaining the operation at the time of RLF detection in LTE.
 端末20は、ステップS100において、RLFを検出する。 The terminal 20 detects the RLF in step S100.
 端末20は、ステップS110において、RRC接続再確立を開始する。ここで、端末20は、RRC接続再確立の動作として、タイマT311を開始し、MACのリセットを行い、デフォルト物理チャネル設定を適用し(言い換えると、RRCレイヤにおいて、デフォルト物理チャネル設定適用前の設定を使用しない)、セル選択を実行する。 The terminal 20 starts reestablishing the RRC connection in step S110. Here, as an operation of reestablishing the RRC connection, the terminal 20 starts the timer T311, resets the MAC, and applies the default physical channel setting (in other words, the setting before applying the default physical channel setting in the RRC layer). Do not use), perform cell selection.
 上記MACのリセットにおいて、端末20は、すべてのタイムアラインメントタイマ(timeAlignmentTimer)が満了したとみなして、満了に対応する動作を実行する。当該満了に対応する動作として、端末20は、設定されたすべての下りリンク割当てと上りリンクgrantをクリアする。なお、タイムアラインメントタイマが動作していないとき、端末20のMACエンティティ(MAC entity)は、サイドリンク送信を行ってはならない。 In the above MAC reset, the terminal 20 considers that all the time alignment timers (timeAlignmentTimers) have expired, and executes an operation corresponding to the expiration. As an operation corresponding to the expiration, the terminal 20 clears all the set downlink allocations and uplink grants. When the time alignment timer is not operating, the MAC entity of the terminal 20 must not perform sidelink transmission.
 上記セル選択において、適切なE-UTRAセルを選択すると、端末20は、SIB2における共通のタイムアラインメントタイマ(timeAlignmentTimerCommon)を適用し、RRC接続再確立要求メッセージ(RRCConnectionReestablishmentRequest message)の送信を開始する。 When an appropriate E-UTRA cell is selected in the above cell selection, the terminal 20 applies a common time alignment timer (timeAlignmentTimerComon) in SIB2 and starts transmitting an RRC connection reestablishment request message (RRCCconnectionRestationRequestrequest message).
 端末20は、ステップS110において、所定のTAG(Timing Advance Group)に属するサービングセルに対して、ランダムアクセス応答メッセージにおいてタイミングアドバンスコマンド(Timing Advance Command)を受信し、且つ、当該TAGに関連付けられたタイムアラインメントタイマが動作していない場合には、当該TAGに対して上記タイミングアドバンスコマンドを適用し、当該TAGに関連付けられたタイムアラインメントタイマを開始する。 In step S110, the terminal 20 receives a timing advance command (Timement Advance Command) in a random access response message for a serving cell belonging to a predetermined TAG (Time Advance Group), and has a time alignment associated with the TAG. If the timer is not operating, the timing advance command is applied to the TAG to start the time alignment timer associated with the TAG.
 端末20は、ステップS120において、セル選択に成功する前にタイマT311が満了した場合には、RRC接続状態(RRC_CONNECTED)から離れる。ここで、端末20は、MACのリセットを行い、すべての無線リソースを解放(release)し、RRCアイドル状態(RRC_IDLE)に遷移する。タイマT311が満了する前にRRC接続再確立が成功した場合には、端末20はRRC接続状態を維持し、RRC接続状態における通信手順へ移行する。 If the timer T311 expires before the cell selection is successful in step S120, the terminal 20 leaves the RRC connection state (RRC_CONCEPTED). Here, the terminal 20 resets the MAC, releases all the radio resources, and transitions to the RRC idle state (RRC_IDLE). If the RRC connection reestablishment is successful before the timer T311 expires, the terminal 20 maintains the RRC connection state and shifts to the communication procedure in the RRC connection state.
 上記の通り、図2のステップS110におけるMACのリセットにおいて、設定済みの(configured)SL grantは解放されていない。したがって、セル選択後(または、ランダムアクセス応答受信後)、タイマT311の満了前には、上述の通りタイムアラインメントタイマが動作しているため、端末20のMACエンティティは、設定済みのSL grantに基づくSL送信を実行し得ると思われる。 As described above, in the MAC reset in step S110 of FIG. 2, the configured SL grant is not released. Therefore, after the cell is selected (or after receiving the random access response) and before the timer T311 expires, the time alignment timer is operating as described above, so that the MAC entity of the terminal 20 is based on the set SL grant. It seems that SL transmission can be performed.
 (RLF検出時の処理:NR)
 NRにおけるRLF検出時の処理について説明する。
(Processing at the time of RLF detection: NR)
The processing at the time of RLF detection in NR will be described.
 図3は、NRにおけるRLF検出時の動作を説明するための図である。 FIG. 3 is a diagram for explaining the operation at the time of RLF detection in NR.
 端末20は、ステップS200において、RLFを検出する。 The terminal 20 detects the RLF in step S200.
 端末20は、ステップS210において、RRC接続再確立を開始する。ここで、端末20は、RRC接続再確立の動作として、タイマT311を開始し、MACのリセットを行い、パラメータspCellConfigを解放し(言い換えると、すべてのRRC設定(RRC configuration)が解放される)、セル選択を実行する。 The terminal 20 starts reestablishing the RRC connection in step S210. Here, the terminal 20 starts the timer T311 as the operation of reestablishing the RRC connection, resets the MAC, and releases the parameter spCellConfiguration (in other words, all the RRC settings (RRC configuration) are released). Perform cell selection.
 上記MACのリセットにおいて、端末20は、すべてのタイムアラインメントタイマ(timeAlignmentTimer)が満了したとみなして、満了に対応する動作を実行する。当該満了に対応する動作として、端末20は、設定されたすべての下りリンク割当てと上りリンクgrantをクリアする。 上記セル選択において、適切なNRセルを選択すると、端末20は、SIB1における共通のタイムアラインメントタイマ(timeAlignmentTimerCommon)を適用し、RRC接続再確立要求メッセージ(RRCConnectionReestablishmentRequest message)の送信を開始する。 In the above MAC reset, the terminal 20 considers that all the time alignment timers (timeAlignmentTimers) have expired, and executes an operation corresponding to the expiration. As an operation corresponding to the expiration, the terminal 20 clears all the set downlink allocations and uplink grants. When an appropriate NR cell is selected in the above cell selection, the terminal 20 applies a common time alignment timer (timeAlignmentTimerCommon) in SIB1 and starts transmitting an RRC connection reestablishment request message (RRCCconnectionRestationRequestrequest message).
 端末20は、ステップS210において、所定のTAG(Timing Advance Group)に属するサービングセルに対して、ランダムアクセス応答メッセージにおいてタイミングアドバンスコマンド(Timing Advance Command)を受信し、且つ、当該TAGに関連付けられたタイムアラインメントタイマが動作していない場合には、当該TAGに対して上記タイミングアドバンスコマンドを適用し、当該TAGに関連付けられたタイムアラインメントタイマを開始する。 In step S210, the terminal 20 receives a timing advance command (Timement Advance Command) in a random access response message for a serving cell belonging to a predetermined TAG (Time Advance Group), and has a time alignment associated with the TAG. If the timer is not operating, the timing advance command is applied to the TAG to start the time alignment timer associated with the TAG.
 端末20は、ステップS220において、セル選択に成功する前にタイマT311が満了した場合には、RRCアイドル状態(RRC_IDLE)に遷移する。ここで、端末20は、MACのリセットを行い、すべての無線リソースを解放し、RRCアイドル状態(RRC_IDLE)に遷移する。タイマT311が満了する前にRRC接続再確立が成功した場合には、端末20はRRC接続状態を維持し、RRC接続状態における通信手順へ移行する。 In step S220, if the timer T311 expires before the cell selection is successful, the terminal 20 transitions to the RRC idle state (RRC_IDLE). Here, the terminal 20 resets the MAC, releases all radio resources, and transitions to the RRC idle state (RRC_IDLE). If the RRC connection reestablishment is successful before the timer T311 expires, the terminal 20 maintains the RRC connection state and shifts to the communication procedure in the RRC connection state.
 図3のNRにおけるRLF検出時の動作において、セル選択後(または、ランダムアクセス応答受信後)、タイマT311の満了前に、端末20のMACエンティティは、設定済みのSL grantに基づくSL送信を実行し得ることは、基地局装置10(gNB)にとって望ましいことではないと考えられる。なぜならば、上記設定済みのSL grantに基づくSL送信は、望ましくない干渉となり得るからである。 In the operation at the time of RLF detection in NR of FIG. 3, the MAC entity of the terminal 20 executes SL transmission based on the set SL grant after cell selection (or after receiving a random access response) and before the expiration of timer T311. What can be done is not considered desirable for base station equipment 10 (gNB). This is because SL transmission based on the SL grant already set can cause undesired interference.
 (MACレイヤの観点)
 本発明の実施形態として、MACレイヤの観点から、設定済みのSL grantについての動作を下記(a)(b)のように規定することが考えられる。
(a)MACのリセットの中で、設定済みのSL grantが解放(release)またはクリア(clear)されてもよい。例えば、タイムアラインメントタイマ満了時に、端末20は、設定されたすべての下りリンク割当てと上りリンクgrantをクリアし、設定済みのすべての又は一部のSL grantをクリアしてもよい。
(From the viewpoint of MAC layer)
As an embodiment of the present invention, from the viewpoint of the MAC layer, it is conceivable to define the operation of the set SL grant as shown in (a) and (b) below.
(A) During the MAC reset, the set SL grant may be released or cleared. For example, when the time alignment timer expires, the terminal 20 may clear all the configured downlink allocations and uplink grants, and may clear all or some of the configured SL grants.
 このように、SL grantに対して、下りリンクおよび上りリンクに対する動作と同様の動作を規定することにより、端末20の実装が容易になることが考えられる。
(b)第1の所定のタイミング(X)から第2の所定のタイミング(Y)までの間、設定済みのSL grantについての動作を一時的に停止(suspend)してもよい。
As described above, it is considered that the implementation of the terminal 20 becomes easy by defining the same operation as the operation for the downlink and the uplink for the SL grant.
(B) From the first predetermined timing (X) to the second predetermined timing (Y), the operation of the set SL grant may be temporarily stopped (suspend).
 第1の所定のタイミング(X)は、RLF時であってもよいし、タイムアラインメントタイマ停止時であってもよいし、RRC接続再確立開始時であってもよい。 The first predetermined timing (X) may be the time of RLF, the time of stopping the time alignment timer, or the time of starting RRC connection reestablishment.
 第2の所定のタイミング(Y)は、セル選択終了時であってもよいし、RRC接続再確立完了時であってもよいし、SL通信のためのSIB受信時であってもよいし、SL通信のためのRRCパラメータ受信時であってもよい。 The second predetermined timing (Y) may be at the end of cell selection, at the completion of RRC connection reestablishment, or at the time of receiving SIB for SL communication. It may be at the time of receiving the RRC parameter for SL communication.
 このように、設定済みのSL grantについての動作を一時的に停止する動作を規定することにより、RRC接続再確立後に、当該設定済みのSL grantを利用し続けることが可能になることが考えられる。 By defining the operation of temporarily stopping the operation of the set SL grant in this way, it is conceivable that the set SL grant can be continuously used after the RRC connection is reestablished. ..
 (RRCレイヤの観点)
 本発明の実施形態として、RRCレイヤの観点から、SLのための設定済みRRCパラメータについて、下記(a)(b)のように規定することが考えられる。
(a)端末20によるRRC接続再確立の開始時に、SLのためのRRCパラメータを解放(release)してもよい。例えば、サイドリンク設定に関するパラメータsidelinkConfigを含むパラメータspCellConfigを解放してもよい。
(Viewpoint of RRC layer)
As an embodiment of the present invention, from the viewpoint of the RRC layer, it is conceivable to define the set RRC parameters for SL as shown in (a) and (b) below.
(A) At the start of reestablishment of the RRC connection by the terminal 20, the RRC parameter for SL may be released. For example, the parameter spCellConfig including the parameter sidelinkConfig related to the side link setting may be released.
 このように、SLのためのパラメータに対して、下りリンクおよび上りリンクのパラメータに対する動作と同様の動作を規定することにより、端末20の実装が容易になることが考えられる。
(b)第1の所定のタイミング(X)から第2の所定のタイミング(Y)までの間、SLのためのRRCパラメータについて、一時的に無効としてもよい。
As described above, it is considered that the implementation of the terminal 20 becomes easy by defining the same operation as the operation for the downlink and uplink parameters for the parameter for SL.
(B) From the first predetermined timing (X) to the second predetermined timing (Y), the RRC parameter for SL may be temporarily invalidated.
 第1の所定のタイミング(X)は、RLF時であってもよいし、タイムアラインメントタイマ停止時であってもよいし、RRC接続再確立開始時であってもよい。 The first predetermined timing (X) may be the time of RLF, the time of stopping the time alignment timer, or the time of starting RRC connection reestablishment.
 第2の所定のタイミング(Y)は、セル選択終了時であってもよいし、RRC接続再確立完了時であってもよいし、SL通信のためのSIB受信時であってもよいし、SL通信のためのRRCパラメータ受信時であってもよい。 The second predetermined timing (Y) may be at the end of cell selection, at the completion of RRC connection reestablishment, or at the time of receiving SIB for SL communication. It may be at the time of receiving the RRC parameter for SL communication.
 このように、RRCパラメータについて、一時的に無効とすることを規定することにより、RRC接続再確立後に、設定済みのSL grantを利用し続けることが可能になることが考えられる。 By stipulating that the RRC parameter is temporarily invalidated in this way, it is possible that the set SL grant can be continued to be used after the RRC connection is reestablished.
 (条件)
 本発明の実施形態として、RRCレイヤの観点およびMACレイヤの観点のうち少なくとも一つの観点から、下記(1)(2)(3)(4)に示すように、設定済みのSL grantを解放する又は一時的に停止するか否かを、所定の条件に従って決定することが考えられる。
(1)設定済みのSL grantを解放するか否かを、キャリアに基づいて決定してもよい。例えば、設定済みのSL grantのキャリアがライセンスキャリア(licensed carrier)の場合には、設定済みのSL grantを解放/クリアし、非ライセンスキャリア(unlicensed carrier)の場合には、設定済みのSL grantを解放/クリアしなくてもよい。例えば、設定済みのSL grantのキャリアが、上りリンク/下りリンク/サイドリンク共有のキャリアの場合には、設定済みのSL grantを解放/クリアし、サイドリンク専用のキャリアの場合には、設定済みのSL grantを解放/クリアしなくてもよい。キャリアは、バンド又は周波数レンジ又はコンポーネントキャリアに置き換えられてもよい。
(conditions)
As an embodiment of the present invention, the set SL grant is released as shown in the following (1), (2), (3), and (4) from the viewpoint of at least one of the viewpoint of the RRC layer and the viewpoint of the MAC layer. Alternatively, it is conceivable to decide whether or not to suspend temporarily according to predetermined conditions.
(1) Whether or not to release the set SL grant may be determined based on the carrier. For example, if the carrier of the set SL grant is a licensed carrier, the set SL grant is released / cleared, and if it is an unlicensed carrier, the set SL grant is released. It does not have to be released / cleared. For example, if the set SL grant carrier is an uplink / downlink / sidelink shared carrier, the set SL grant is released / cleared, and if it is a sidelink dedicated carrier, it is already set. It is not necessary to release / clear the SL grant of. Carriers may be replaced by bands or frequency ranges or component carriers.
 このように端末20の動作を規定することにより、Uu通信(上りリンク/下りリンク通信)の劣化を避けることが可能となる。
(2)設定済みのSL grantを解放するか否かを、リソースプールに基づいて規定してもよい。
By defining the operation of the terminal 20 in this way, it is possible to avoid deterioration of Uu communication (uplink / downlink communication).
(2) Whether or not to release the set SL grant may be specified based on the resource pool.
 図4および図5は、リソースプールに基づく動作の一例を示す図である。図4に示すように、SL grantが、事前設定されたリソースプールまたは共通のリソースプールの中に設定された場合には、RRC接続再確立後に、当該SL grantはクリアせず、SL grantが、事前設定や共通のリソースプールではなく、設定されたリソースプールの中に設定された場合には、(RRC接続再確立後には、異なるリソースプールが設定されると考えられるので)、当該SL grantはクリアしてもよい。 4 and 5 are diagrams showing an example of operation based on the resource pool. As shown in FIG. 4, when the SL grant is set in the preset resource pool or the common resource pool, the SL grant is not cleared after the RRC connection is reestablished, and the SL grant is not cleared. If it is set in the set resource pool instead of the preset or common resource pool (because it is considered that a different resource pool will be set after the RRC connection is reestablished), the SL grant will be You may clear it.
 設定済みのSL grantが、事前設定されたリソースプール、共通のリソースプール、または、(RRC接続再確立後の)新たに設定されたリソースプール内に含まれる場合には、当該SL grantはクリアせず、そうでない場合には(設定済みのSL grantが、事前設定されたリソースプールにも、共通のリソースプールにも、新たに設定されたリソースプールにも含まれない場合には)、当該SL grantをクリアしてもよい。図5に示すように、設定されたリソースプールの一部が共通のリソースプールと重なり、設定済みのSL grantが、設定されたリソースプールの中の、共通のリソースプールと重なる部分に含まれる場合には、RRC接続再確立後にも、当該設定済みのSL grantは、共通のリソースプールに含まれるので、クリアしなくてもよい。 If the configured SL grant is included in a preset resource pool, a common resource pool, or a newly configured resource pool (after reestablishing the RRC connection), clear the SL grant. If not (if the configured SL grant is not included in the preset resource pool, the common resource pool, or the newly configured resource pool), the SL You may clear the grant. As shown in FIG. 5, when a part of the set resource pool overlaps with the common resource pool and the set SL grant is included in the part of the set resource pool that overlaps with the common resource pool. Since the SL grant that has already been set is included in the common resource pool even after the RRC connection is reestablished, it is not necessary to clear it.
 このように端末20の動作を規定することにより、利用可能なリソースプールから外れたリソースに設定されたSL送信を防ぐことが可能となる。
(3)設定済みのSL grantを解放するか否かを、セルサーチ(cell search)の結果に応じて規定してもよい。例えば、セルサーチの結果、SL grantを設定したセルと同じセルとの接続が確立される場合には、当該SL grantはクリアせず、そうでない場合には(SL grantを設定したセルとは異なるセルとの接続が確立される場合には)、当該SL grantはクリアしてもよい。
By defining the operation of the terminal 20 in this way, it is possible to prevent SL transmission set for resources outside the available resource pool.
(3) Whether or not to release the set SL grant may be specified according to the result of the cell search. For example, as a result of the cell search, if a connection with the same cell as the cell in which the SL grant is set is established, the SL grant is not cleared, otherwise (different from the cell in which the SL grant is set). The SL grant may be cleared (if a connection with the cell is established).
 このように端末20の動作を規定することにより、SL grantを設定したセルから外れたセルのSL送信を防ぐことが可能となる。
(4)設定済みのSL grantを解放するか否かを、送信モード(リソース割当てモード)に応じて規定してもよい。例えば、送信モード2が利用可能な場合には、設定済みのSL grantをクリアし、送信モード2が利用可能でない場合には、設定済みのSL grantをクリアしなくてもよい。また、SL grantが、送信モード1のために設定された場合には、当該SL grantをクリアし、送信モード2のために設定された場合には、当該SL grantをクリアしなくてもよい。
By defining the operation of the terminal 20 in this way, it is possible to prevent SL transmission of a cell deviating from the cell in which the SL grant is set.
(4) Whether or not to release the set SL grant may be specified according to the transmission mode (resource allocation mode). For example, if the transmission mode 2 is available, the set SL grant may be cleared, and if the transmission mode 2 is not available, the set SL grant may not be cleared. Further, when the SL grant is set for the transmission mode 1, the SL grant may be cleared, and when the SL grant is set for the transmission mode 2, the SL grant may not be cleared.
 ここで、「クリアする」とは、「すべての又は一部のサイドリンクgrantをクリアする」という意味であり得る。 Here, "clearing" can mean "clearing all or part of the sidelink grant".
 また、「サイドリンクgrant」は、「サイドリンクのための上位レイヤパラメータ」で置き換え得る。 Also, "side link grant" can be replaced with "upper layer parameters for side links".
 また、クリアする(Clear)と解放する(Release)とは、互いに置き換えられてもよい。一時的に停止する(Suspend)と一時的に無効にする(Invalidate)とは、互いに置き換えられてもよい。 Also, clear and release may be interchanged with each other. Suspending and Invalidate may be interchanged with each other.
 (装置構成)
 次に、これまでに説明した処理及び動作を実行する基地局装置10及び端末20の機能構成例を説明する。基地局装置10及び端末20は上述した実施例を実施する機能を含む。ただし、基地局装置10及び端末20はそれぞれ、実施例の中の一部の機能のみを備えることとしてもよい。
(Device configuration)
Next, a functional configuration example of the base station apparatus 10 and the terminal 20 that execute the processes and operations described so far will be described. The base station apparatus 10 and the terminal 20 include a function of carrying out the above-described embodiment. However, the base station apparatus 10 and the terminal 20 may each have only a part of the functions in the embodiment.
 <基地局装置10>
 図6は、基地局装置10の機能構成の一例を示す図である。図6に示されるように、基地局装置10は、送信部110と、受信部120と、設定部130と、制御部140とを有する。図6に示される機能構成は一例に過ぎない。本発明の実施の形態に係る動作を実行できるのであれば、機能区分及び機能部の名称はどのようなものでもよい。
<Base station device 10>
FIG. 6 is a diagram showing an example of the functional configuration of the base station apparatus 10. As shown in FIG. 6, the base station apparatus 10 includes a transmission unit 110, a reception unit 120, a setting unit 130, and a control unit 140. The functional configuration shown in FIG. 6 is only an example. Any function classification and name of the functional unit may be used as long as the operation according to the embodiment of the present invention can be executed.
 送信部110は、端末20側に送信する信号を生成し、当該信号を無線で送信する機能を含む。また、送信部110は、端末20に対してSLスケジューリング等の情報を送信する。受信部120は、端末20から送信された各種の信号を受信し、受信した信号から、例えばより上位のレイヤの情報を取得する機能を含む。 The transmission unit 110 includes a function of generating a signal to be transmitted to the terminal 20 side and transmitting the signal wirelessly. Further, the transmission unit 110 transmits information such as SL scheduling to the terminal 20. The receiving unit 120 includes a function of receiving various signals transmitted from the terminal 20 and acquiring information of, for example, a higher layer from the received signals.
 設定部130は、予め設定される設定情報、及び、端末20に送信する各種の設定情報を記憶装置に格納し、必要に応じて記憶装置から読み出す。設定情報の内容は、例えば、V2Xの設定に係る情報等である。 The setting unit 130 stores preset setting information and various setting information to be transmitted to the terminal 20 in the storage device, and reads the setting information from the storage device as needed. The content of the setting information is, for example, information related to the setting of V2X.
 制御部140は、実施例において説明したように、端末20がV2Xを行うための設定に係る処理を行う。また、制御部140における信号送信に関する機能部を送信部110に含め、制御部140における信号受信に関する機能部を受信部120に含めてもよい。 As described in the embodiment, the control unit 140 performs processing related to the setting for the terminal 20 to perform V2X. Further, the function unit related to signal transmission in the control unit 140 may be included in the transmission unit 110, and the function unit related to signal reception in the control unit 140 may be included in the reception unit 120.
 <端末20>
 図7は、端末20の機能構成の一例を示す図である。図7に示されるように、端末20は、送信部210と、受信部220と、設定部230と、制御部240とを有する。図7に示される機能構成は一例に過ぎない。本発明の実施の形態に係る動作を実行できるのであれば、機能区分及び機能部の名称はどのようなものでもよい。
<Terminal 20>
FIG. 7 is a diagram showing an example of the functional configuration of the terminal 20. As shown in FIG. 7, the terminal 20 has a transmission unit 210, a reception unit 220, a setting unit 230, and a control unit 240. The functional configuration shown in FIG. 7 is only an example. Any function classification and name of the functional unit may be used as long as the operation according to the embodiment of the present invention can be executed.
 送信部210は、送信データから送信信号を作成し、当該送信信号を無線で送信する。受信部220は、各種の信号を無線受信し、受信した物理レイヤの信号からより上位のレイヤの信号を取得する。送信部210は、他の端末20に対して、サイドリンクのCSI-RSおよびDM-RSを送信する。受信部220は、基地局装置10から送信されるSLスケジューリングを受信する機能を有する。受信部220は、他の端末20から、サイドリンクのCSI-RSおよびDM-RSを受信する。 The transmission unit 210 creates a transmission signal from the transmission data and wirelessly transmits the transmission signal. The receiving unit 220 wirelessly receives various signals and acquires a signal of a higher layer from the received signal of the physical layer. The transmission unit 210 transmits the side link CSI-RS and DM-RS to the other terminal 20. The receiving unit 220 has a function of receiving the SL scheduling transmitted from the base station apparatus 10. The receiving unit 220 receives the side link CSI-RS and DM-RS from the other terminal 20.
 設定部230は、受信部220により基地局装置10又は端末20から受信した各種の設定情報を記憶装置に格納し、必要に応じて記憶装置から読み出す。また、設定部230は、予め設定される設定情報も格納する。設定情報の内容は、例えば、サイドリンクのCSI-RSおよびDM-RSに係る情報等である。 The setting unit 230 stores various setting information received from the base station device 10 or the terminal 20 by the receiving unit 220 in the storage device, and reads it out from the storage device as needed. The setting unit 230 also stores preset setting information. The content of the setting information is, for example, information related to CSI-RS and DM-RS of the side link.
 制御部240は、実施例において説明したように、他の端末20と実行されるD2D通信を制御する。また、制御部240は、他の端末20との間の無線アクセス手順を実行する。制御部240における信号送信に関する機能部を送信部210に含め、制御部240における信号受信に関する機能部を受信部220に含めてもよい。 The control unit 240 controls the D2D communication executed with the other terminal 20 as described in the embodiment. In addition, the control unit 240 executes a wireless access procedure with another terminal 20. The function unit related to signal transmission in the control unit 240 may be included in the transmission unit 210, and the function unit related to signal reception in the control unit 240 may be included in the reception unit 220.
 (ハードウェア構成)
 上述の本発明の実施の形態の説明に用いた機能構成図(図6及び図7)は、機能単位のブロックを示している。これらの機能ブロック(構成部)は、ハードウェア及び/又はソフトウェアの任意の組み合わせによって実現される。また、各機能ブロックの実現手段は特に限定されない。すなわち、各機能ブロックは、物理的及び/又は論理的に複数要素が結合した1つの装置により実現されてもよいし、物理的及び/又は論理的に分離した2つ以上の装置を直接的及び/又は間接的に(例えば、有線及び/又は無線)で接続し、これら複数の装置により実現されてもよい。
(Hardware configuration)
The functional configuration diagrams (FIGS. 6 and 7) used in the description of the embodiment of the present invention described above show blocks of functional units. These functional blocks (components) are realized by any combination of hardware and / or software. Further, the means for realizing each functional block is not particularly limited. That is, each functional block may be realized by one device in which a plurality of elements are physically and / or logically combined, or two or more devices physically and / or logically separated from each other directly and. / Or indirectly (eg, wired and / or wireless) may be connected and realized by these plurality of devices.
 また、例えば、本発明の一実施の形態における基地局装置10及び端末20はいずれも、本発明の実施の形態に係る処理を行うコンピュータとして機能してもよい。図8は、本発明の実施の形態に係る基地局装置10又は端末20である無線通信装置のハードウェア構成の一例を示す図である。上述の基地局装置10及び端末20はそれぞれ、物理的には、プロセッサ1001、記憶装置1002、補助記憶装置1003、通信装置1004、入力装置1005、出力装置1006、バス1007等を含むコンピュータ装置として構成されてもよい。 Further, for example, the base station apparatus 10 and the terminal 20 according to the embodiment of the present invention may both function as a computer that performs the processing according to the embodiment of the present invention. FIG. 8 is a diagram showing an example of the hardware configuration of the wireless communication device which is the base station device 10 or the terminal 20 according to the embodiment of the present invention. The above-mentioned base station device 10 and terminal 20 are physically configured as computer devices 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, and the like. May be done.
 なお、以下の説明では、「装置」という文言は、回路、デバイス、ユニット等に読み替えることができる。基地局装置10及び端末20のハードウェア構成は、図に示した1001~1006で示される各装置を1つ又は複数含むように構成されてもよいし、一部の装置を含まずに構成されてもよい。 In the following explanation, the word "device" can be read as a circuit, device, unit, etc. The hardware configuration of the base station device 10 and the terminal 20 may be configured to include one or more of the devices shown by 1001 to 1006 shown in the figure, or may be configured not to include some of the devices. You may.
 基地局装置10及び端末20における各機能は、プロセッサ1001、記憶装置1002等のハードウェア上に所定のソフトウェア(プログラム)を読み込ませることで、プロセッサ1001が演算を行い、通信装置1004による通信、記憶装置1002及び補助記憶装置1003におけるデータの読み出し及び/又は書き込みを制御することで実現される。 For each function of the base station device 10 and the terminal 20, the processor 1001 performs an operation by loading predetermined software (program) on the hardware such as the processor 1001 and the storage device 1002, and the communication device 1004 communicates and stores the data. It is realized by controlling the reading and / or writing of data in the device 1002 and the auxiliary storage device 1003.
 プロセッサ1001は、例えば、オペレーティングシステムを動作させてコンピュータ全体を制御する。プロセッサ1001は、周辺装置とのインタフェース、制御装置、演算装置、レジスタ等を含む中央処理装置(CPU:Central Processing Unit)で構成されてもよい。 The processor 1001 operates, for example, an operating system to control the entire computer. The processor 1001 may be composed of a central processing unit (CPU: Central Processing Unit) including an interface with a peripheral device, a control device, an arithmetic unit, a register, and the like.
 また、プロセッサ1001は、プログラム(プログラムコード)、ソフトウェアモジュール又はデータを、補助記憶装置1003及び/又は通信装置1004から記憶装置1002に読み出し、これらに従って各種の処理を実行する。プログラムとしては、上述の実施の形態で説明した動作の少なくとも一部をコンピュータに実行させるプログラムが用いられる。例えば、図6に示した基地局装置10の送信部110、受信部120、設定部130、制御部140は、記憶装置1002に格納され、プロセッサ1001で動作する制御プログラムによって実現されてもよい。また、例えば、図7に示した端末20の送信部210と、受信部220と、設定部230、制御部240は、記憶装置1002に格納され、プロセッサ1001で動作する制御プログラムによって実現されてもよい。上述の各種処理は、1つのプロセッサ1001で実行される旨を説明してきたが、2以上のプロセッサ1001により同時又は逐次に実行されてもよい。プロセッサ1001は、1以上のチップで実装されてもよい。なお、プログラムは、電気通信回線を介してネットワークから送信されてもよい。 Further, the processor 1001 reads a program (program code), a software module or data from the auxiliary storage device 1003 and / or the communication device 1004 into the storage device 1002, and executes various processes according to these. As the program, a program that causes a computer to execute at least a part of the operations described in the above-described embodiment is used. For example, the transmission unit 110, the reception unit 120, the setting unit 130, and the control unit 140 of the base station device 10 shown in FIG. 6 may be stored in the storage device 1002 and realized by a control program that operates in the processor 1001. Further, for example, even if the transmission unit 210, the reception unit 220, the setting unit 230, and the control unit 240 of the terminal 20 shown in FIG. 7 are stored in the storage device 1002 and realized by a control program operated by the processor 1001. Good. Although it has been described that the various processes described above are executed by one processor 1001, they may be executed simultaneously or sequentially by two or more processors 1001. Processor 1001 may be mounted on one or more chips. The program may be transmitted from the network via a telecommunication line.
 記憶装置1002は、コンピュータ読み取り可能な記録媒体であり、例えば、ROM(Read Only Memory)、EPROM(Erasable Programmable ROM)、EEPROM(Electrically Erasable Programmable ROM)、RAM(Random Access Memory)等の少なくとも1つで構成されてもよい。記憶装置1002は、レジスタ、キャッシュ、メインメモリ(主記憶装置)等と呼ばれてもよい。記憶装置1002は、本発明の一実施の形態に係る処理を実施するために実行可能なプログラム(プログラムコード)、ソフトウェアモジュール等を保存することができる。 The storage device 1002 is a computer-readable recording medium, and is, for example, at least one such as a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), an EEPROM (Electrically Erasable Programmable ROM), and a RAM (Random Access Memory). It may be configured. The storage device 1002 may be referred to as a register, a cache, a main memory (main storage device), or the like. The storage device 1002 can store a program (program code), a software module, or the like that can be executed to carry out the process according to the embodiment of the present invention.
 補助記憶装置1003は、コンピュータ読み取り可能な記録媒体であり、例えば、CD-ROM(Compact Disc ROM)等の光ディスク、ハードディスクドライブ、フレキシブルディスク、光磁気ディスク(例えば、コンパクトディスク、デジタル多用途ディスク、Blu-ray(登録商標)ディスク)、スマートカード、フラッシュメモリ(例えば、カード、スティック、キードライブ)、フロッピー(登録商標)ディスク、磁気ストリップ等の少なくとも1つで構成されてもよい。補助記憶装置1003は、補助記憶装置と呼ばれてもよい。上述の記憶媒体は、例えば、記憶装置1002及び/又は補助記憶装置1003を含むデータベース、サーバその他の適切な媒体であってもよい。 The auxiliary storage device 1003 is a computer-readable recording medium, and is, for example, an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, an optical magnetic disk (for example, a compact disk, a digital versatile disk, Blu). -It may be composed of at least one of a ray (registered trademark) disk), a smart card, a flash memory (for example, a card, a stick, a key drive), a floppy (registered trademark) disk, a magnetic strip, and the like. The auxiliary storage device 1003 may be referred to as an auxiliary storage device. The storage medium described above may be, for example, a database, server or other suitable medium containing the storage device 1002 and / or the auxiliary storage device 1003.
 通信装置1004は、有線及び/又は無線ネットワークを介してコンピュータ間の通信を行うためのハードウェア(送受信デバイス)であり、例えばネットワークデバイス、ネットワークコントローラ、ネットワークカード、通信モジュール等ともいう。例えば、基地局装置10の送信部110及び受信部120は、通信装置1004で実現されてもよい。また、端末20の送信部210及び受信部220は、通信装置1004で実現されてもよい。 The communication device 1004 is hardware (transmission / reception device) for communicating between computers via a wired and / or wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, or the like. For example, the transmission unit 110 and the reception unit 120 of the base station device 10 may be realized by the communication device 1004. Further, the transmission unit 210 and the reception unit 220 of the terminal 20 may be realized by the communication device 1004.
 入力装置1005は、外部からの入力を受け付ける入力デバイス(例えば、キーボード、マウス、マイクロフォン、スイッチ、ボタン、センサ等)である。出力装置1006は、外部への出力を実施する出力デバイス(例えば、ディスプレイ、スピーカー、LEDランプ等)である。なお、入力装置1005及び出力装置1006は、一体となった構成(例えば、タッチパネル)であってもよい。 The input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives an input from the outside. The output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that outputs to the outside. The input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).
 また、プロセッサ1001及び記憶装置1002等の各装置は、情報を通信するためのバス1007で接続される。バス1007は、単一のバスで構成されてもよいし、装置間で異なるバスで構成されてもよい。 Further, 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 composed of a single bus or may be composed of different buses between the devices.
 また、基地局装置10及び端末20はそれぞれ、マイクロプロセッサ、デジタル信号プロセッサ(DSP:Digital Signal Processor)、ASIC(Application Specific Integrated Circuit)、PLD(Programmable Logic Device)、FPGA(Field Programmable Gate Array)等のハードウェアを含んで構成されてもよく、当該ハードウェアにより、各機能ブロックの一部又は全てが実現されてもよい。例えば、プロセッサ1001は、これらのハードウェアの少なくとも1つで実装されてもよい。 Further, the base station device 10 and the terminal 20 are a microprocessor, a digital signal processor (DSP: Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), an FPGA (Field Programmable Gate Array), etc., respectively. It may be configured to include hardware, and the hardware may realize a part or all of each functional block. For example, processor 1001 may be implemented on at least one of these hardware.
 (実施の形態のまとめ)
 以上、説明したように、本発明の実施形態によれば、基地局端末間の参照信号の系列に対応する系列を生成する制御部と、生成した前記系列を有する参照信号を他の端末に送信する送信部と、を有する端末が提供される。
(Summary of embodiments)
As described above, according to the embodiment of the present invention, a control unit that generates a sequence corresponding to a sequence of reference signals between base station terminals and a reference signal having the generated sequence are transmitted to other terminals. A terminal having a transmitter and a terminal to be provided is provided.
 上記の構成により、NRのサイドリンク(NR-SL)における参照信号を規定する技術が提供される。 The above configuration provides a technique for defining a reference signal in the NR side link (NR-SL).
 (実施形態の補足)
 以上、本発明の実施の形態を説明してきたが、開示される発明はそのような実施形態に限定されず、当業者は様々な変形例、修正例、代替例、置換例等を理解するであろう。発明の理解を促すため具体的な数値例を用いて説明がなされたが、特に断りのない限り、それらの数値は単なる一例に過ぎず適切な如何なる値が使用されてもよい。上記の説明における項目の区分けは本発明に本質的ではなく、2以上の項目に記載された事項が必要に応じて組み合わせて使用されてよいし、ある項目に記載された事項が、別の項目に記載された事項に(矛盾しない限り)適用されてよい。機能ブロック図における機能部又は処理部の境界は必ずしも物理的な部品の境界に対応するとは限らない。複数の機能部の動作が物理的には1つの部品で行われてもよいし、あるいは1つの機能部の動作が物理的には複数の部品により行われてもよい。実施の形態で述べた処理手順については、矛盾の無い限り処理の順序を入れ替えてもよい。処理説明の便宜上、基地局装置10及び端末20は機能的なブロック図を用いて説明されたが、そのような装置はハードウェアで、ソフトウェアで又はそれらの組み合わせで実現されてもよい。本発明の実施の形態に従って基地局装置10が有するプロセッサにより動作するソフトウェア及び本発明の実施の形態に従って端末20が有するプロセッサにより動作するソフトウェアはそれぞれ、ランダムアクセスメモリ(RAM)、フラッシュメモリ、読み取り専用メモリ(ROM)、EPROM、EEPROM、レジスタ、ハードディスク(HDD)、リムーバブルディスク、CD-ROM、データベース、サーバその他の適切な如何なる記憶媒体に保存されてもよい。
(Supplement to the embodiment)
Although the embodiments of the present invention have been described above, the disclosed invention is not limited to such embodiments, and those skilled in the art can understand various modifications, modifications, alternatives, substitutions, and the like. There will be. Although explanations have been given using specific numerical examples in order to promote understanding of the invention, these numerical values are merely examples and any appropriate value may be used unless otherwise specified. The classification of items in the above description is not essential to the present invention, and the items described in two or more items may be used in combination as necessary, and the items described in one item may be used in combination with another item. It may be applied (as long as there is no contradiction) to the matters described in. The boundary of the functional unit or the processing unit in the functional block diagram does not always correspond to the boundary of the physical component. The operation of the plurality of functional units may be physically performed by one component, or the operation of one functional unit may be physically performed by a plurality of components. With respect to the processing procedure described in the embodiment, the order of processing may be changed as long as there is no contradiction. For convenience of processing description, the base station device 10 and the terminal 20 have been described with reference to functional block diagrams, but such devices may be implemented in hardware, software, or a combination thereof. The software operated by the processor of the base station apparatus 10 according to the embodiment of the present invention and the software operated by the processor of the terminal 20 according to the embodiment of the present invention are random access memory (RAM), flash memory, and read-only, respectively. It may be stored in a memory (ROM), EPROM, EEPROM, registers, hard disk (HDD), removable disk, CD-ROM, database, server or any other suitable storage medium.
 また、情報の通知は、本明細書で説明した態様/実施形態に限られず、他の方法で行われてもよい。例えば、情報の通知は、物理レイヤシグナリング(例えば、DCI(Downlink Control Information)、UCI(Uplink Control Information))、上位レイヤシグナリング(例えば、RRC(Radio Resource Control)シグナリング、MAC(Medium Access Control)シグナリング、ブロードキャスト情報(MIB(Master Information Block)、SIB(System Information Block))、その他の信号又はこれらの組み合わせによって実施されてもよい。また、RRCシグナリングは、RRCメッセージと呼ばれてもよく、例えば、RRC接続セットアップ(RRC Connection Setup)メッセージ、RRC接続再構成(RRC Connection Reconfiguration)メッセージ等であってもよい。 Further, the notification of information is not limited to the mode / embodiment described in this specification, and may be performed by other methods. For example, information notification includes physical layer signaling (for example, DCI (Downlink Control Information), UCI (Uplink Control Information)), higher layer signaling (for example, RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, etc. Broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals or a combination thereof may be used. RRC signaling may be referred to as an RRC message, for example, RRC. It may be a connection setup (RRCConnectionSetup) message, an RRC connection reconfiguration (RRCConnectionReconfiguration) message, or the like.
 本明細書で説明した各態様/実施形態は、LTE(Long Term Evolution)、LTE-A(LTE-Advanced)、SUPER 3G、IMT-Advanced、4G、5G、FRA(Future Radio Access)、W-CDMA(登録商標)、GSM(登録商標)、CDMA2000、UMB(Ultra Mobile Broadband)、IEEE 802.11(Wi-Fi)、IEEE 802.16(WiMAX)、IEEE 802.20、UWB(Ultra-WideBand)、Bluetooth(登録商標)、その他の適切なシステムを利用するシステム及び/又はこれらに基づいて拡張された次世代システムに適用されてもよい。 Each aspect / embodiment described in the present specification includes LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G, 5G, FRA (Future Radio Access), W-CDMA. (Registered Trademarks), GSM (Registered Trademarks), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, UWB (Ultra-WideBand), It may be applied to systems utilizing Bluetooth®, other suitable systems and / or next-generation systems extended based on them.
 本明細書で説明した各態様/実施形態の処理手順、シーケンス、フローチャート等は、矛盾の無い限り、順序を入れ替えてもよい。例えば、本明細書で説明した方法については、例示的な順序で様々なステップの要素を提示しており、提示した特定の順序に限定されない。 The order of the processing procedures, sequences, flowcharts, etc. of each aspect / embodiment described in the present specification may be changed as long as there is no contradiction. For example, the methods described herein present elements of various steps in an exemplary order, and are not limited to the particular order presented.
 本明細書において基地局装置10によって行われるとした特定動作は、場合によってはその上位ノード(upper node)によって行われることもある。基地局装置10を有する1つ又は複数のネットワークノード(network nodes)からなるネットワークにおいて、端末20との通信のために行われる様々な動作は、基地局装置10及び/又は基地局装置10以外の他のネットワークノード(例えば、MME又はS-GW等が考えられるが、これらに限られない)によって行われ得ることは明らかである。上記において基地局装置10以外の他のネットワークノードが1つである場合を例示したが、複数の他のネットワークノードの組み合わせ(例えば、MME及びS-GW)であってもよい。 In some cases, the specific operation performed by the base station apparatus 10 in the present specification may be performed by its upper node (upper node). In a network consisting of one or more network nodes having a base station device 10, various operations performed for communication with the terminal 20 are performed other than the base station device 10 and / or the base station device 10. It is clear that it can be done by other network nodes (eg, MME or S-GW, etc., but not limited to these). Although the case where there is one network node other than the base station apparatus 10 is illustrated above, it may be a combination of a plurality of other network nodes (for example, MME and S-GW).
 本明細書で説明した各態様/実施形態は単独で用いてもよいし、組み合わせて用いてもよいし、実行に伴って切り替えて用いてもよい。 Each aspect / embodiment described in the present specification may be used alone, in combination, or switched with execution.
 端末20は、当業者によって、ユーザ装置、加入者局、モバイルユニット、加入者ユニット、ワイヤレスユニット、リモートユニット、モバイルデバイス、ワイヤレスデバイス、ワイヤレス通信デバイス、リモートデバイス、モバイル加入者局、アクセス端末、モバイル端末、ワイヤレス端末、リモート端末、ハンドセット、ユーザエージェント、モバイルクライアント、クライアント、又はいくつかの他の適切な用語で呼ばれる場合もある。 The terminal 20 may be a user device, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, or a mobile device by a person skilled in the art. It may also be referred to as a terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.
 基地局装置10は、当業者によって、NB(NodeB)、eNB(evolved NodeB)、gNB、ベースステーション(Base Station)、又はいくつかの他の適切な用語で呼ばれる場合もある。 The base station apparatus 10 may be referred to by those skilled in the art by NB (NodeB), eNB (evolvedNodeB), gNB, BaseStation, or some other suitable term.
 本明細書で使用する「判断(determining)」、「決定(determining)」という用語は、多種多様な動作を包含する場合がある。「判断」、「決定」は、例えば、判定(judging)、計算(calculating)、算出(computing)、処理(processing)、導出(deriving)、調査(investigating)、探索(looking up)(例えば、テーブル、データベース又は別のデータ構造での探索)、確認(ascertaining)した事を「判断」「決定」したとみなす事等を含み得る。また、「判断」、「決定」は、受信(receiving)(例えば、情報を受信すること)、送信(transmitting)(例えば、情報を送信すること)、入力(input)、出力(output)、アクセス(accessing)(例えば、メモリ中のデータにアクセスすること)した事を「判断」「決定」したとみなす事等を含み得る。また、「判断」、「決定」は、解決(resolving)、選択(selecting)、選定(choosing)、確立(establishing)、比較(comparing)等した事を「判断」「決定」したとみなす事を含み得る。つまり、「判断」「決定」は、何らかの動作を「判断」「決定」したとみなす事を含み得る。 The terms "determining" and "determining" used in this specification may include a wide variety of actions. “Judgment” and “decision” are, for example, judgment (judging), calculation (calculating), calculation (computing), processing (processing), derivation (deriving), investigating (investigating), searching (looking up) (for example, table , Searching in a database or another data structure), confirming (ascertaining) may be regarded as "judgment" or "decision". In addition, "judgment" and "decision" are receiving (for example, receiving information), transmitting (for example, transmitting information), input (input), output (output), and access. (Accessing) (for example, accessing data in memory) may be regarded as "judgment" or "decision". In addition, "judgment" and "decision" mean that "resolving", "selecting", "choosing", "establishing", "comparing", etc. are regarded as "judgment" and "decision". Can include. That is, "judgment" and "decision" may include that some action is regarded as "judgment" and "decision".
 本明細書で使用する「に基づいて」という記載は、別段に明記されていない限り、「のみに基づいて」を意味しない。言い換えれば、「に基づいて」という記載は、「のみに基づいて」と「に少なくとも基づいて」の両方を意味する。 The phrase "based on" as used herein does not mean "based on" unless otherwise stated. In other words, the statement "based on" means both "based only" and "at least based on".
 「含む(include)」、「含んでいる(including)」、及びそれらの変形が、本明細書あるいは特許請求の範囲で使用されている限り、これら用語は、用語「備える(comprising)」と同様に、包括的であることが意図される。さらに、本明細書あるいは特許請求の範囲において使用されている用語「又は(or)」は、排他的論理和ではないことが意図される。 As long as "include", "including", and variations thereof are used within the scope of the present specification or claims, these terms are similar to the term "comprising". Is intended to be inclusive. Furthermore, the term "or" as used herein or in the claims is intended not to be an exclusive OR.
 本開示の全体において、例えば、英語でのa、an及びtheのように、翻訳により冠詞が追加された場合、これらの冠詞は、文脈から明らかにそうではないことが示されていなければ、複数のものを含み得る。 Throughout this disclosure, if articles are added by translation, for example a, an and the in English, these articles will be plural unless the context clearly indicates that they are not. Can include
 以上、本発明について詳細に説明したが、当業者にとっては、本発明が本明細書中に説明した実施形態に限定されるものではないということは明らかである。本発明は、特許請求の範囲の記載により定まる本発明の趣旨及び範囲を逸脱することなく修正及び変更態様として実施することができる。したがって、本明細書の記載は、例示説明を目的とするものであり、本発明に対して何ら制限的な意味を有するものではない。 Although the present invention has been described in detail above, it is clear to those skilled in the art that the present invention is not limited to the embodiments described in the present specification. The present invention can be implemented as modifications and modifications without departing from the spirit and scope of the present invention as defined by the claims. Therefore, the description of the present specification is for the purpose of exemplification and does not have any limiting meaning to the present invention.
10    基地局装置
110   送信部
120   受信部
130   設定部
140   制御部
20    端末
210   送信部
220   受信部
230   設定部
240   制御部
1001  プロセッサ
1002  記憶装置
1003  補助記憶装置
1004  通信装置
1005  入力装置
1006  出力装置
10 Base station device 110 Transmission unit 120 Reception unit 130 Setting unit 140 Control unit 20 Terminal 210 Transmission unit 220 Reception unit 230 Setting unit 240 Control unit 1001 Processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication device 1005 Input device 1006 Output device

Claims (5)

  1.  RRC(Radio Resource Control)接続制御に関連する処理を行う制御部を有し、
     前記制御部は、前記RRC接続制御に関連する処理を行う際に、設定済みのサイドリンクグラントをクリアする又は一時的に停止するか否かを決定する、
     端末。
    It has a control unit that performs processing related to RRC (Radio Resource Control) connection control.
    The control unit determines whether to clear or temporarily stop the set side link grant when performing the process related to the RRC connection control.
    Terminal.
  2.  前記設定済みのサイドリンクグラントをクリアする又は一時的に停止するか否かの決定は、前記サイドリンクグラントに対応するサイドリンクパラメータをリリースする又は一時的に無効にするか否かの決定を含む、
     請求項1に記載の端末。
    The determination of whether to clear or temporarily suspend the configured sidelink grant includes the determination of whether to release or temporarily disable the sidelink parameter corresponding to the sidelink grant. ,
    The terminal according to claim 1.
  3.  前記制御部は、条件に応じて、前記設定済みのサイドリンクグラントをクリアする又は一時的に停止するか否かを決定する、
     請求項1に記載の端末。
    The control unit determines whether to clear or temporarily stop the set side link grant according to the conditions.
    The terminal according to claim 1.
  4.  前記条件は、前記サイドリンクグラントのキャリア、前記サイドリンクグラントのリソースプール、前記RRC接続再確立後のセル、および、利用可能である又は前記サイドリンクグラントに設定されるサイドリンク送信モードの少なくとも一つを含む、
     請求項3に記載の端末。
    The conditions are the carrier of the sidelink grant, the resource pool of the sidelink grant, the cell after the RRC connection is reestablished, and at least one of the sidelink transmission modes available or set for the sidelink grant. Including one
    The terminal according to claim 3.
  5.  RRC(Radio Resource Control)接続制御に関連する処理を行うステップと、
     前記RRC接続制御に関連する処理を行う際に、設定済みのサイドリンクグラントをクリアする又は一時的に停止するか否かを決定するステップと、を有する
     端末の通信方法。
    Steps to perform processing related to RRC (Radio Resource Control) connection control, and
    A communication method of a terminal having a step of determining whether to clear or temporarily stop a set side link grant when performing a process related to the RRC connection control.
PCT/JP2019/030609 2019-08-02 2019-08-02 Terminal and communication method WO2021024333A1 (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017517199A (en) * 2014-05-08 2017-06-22 インテル アイピー コーポレイション Device-to-device (D2D) communication

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017517199A (en) * 2014-05-08 2017-06-22 インテル アイピー コーポレイション Device-to-device (D2D) communication

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Title
ERICSSON: "Support of Configured SL Grant in Mode 1", 3GPP TSG RAN WG2 #106 R2-1907352, 13 May 2019 (2019-05-13), XP051730791 *
MEDIATEK INC.: "Discussion on NR Uu controlling LTE sidelink", 3GPP TSG RAN WG1 #97 R1-1906559, 13 May 2019 (2019-05-13), XP051728010 *
OPPO: "Mode 1 resource allocation for NR SL", 3GPP TSG RAN WG1 #97 R1-1906473, 13 May 2019 (2019-05-13), XP051727923 *

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