WO2022070431A1 - Terminal, station de base, et procédé de communication - Google Patents

Terminal, station de base, et procédé de communication Download PDF

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Publication number
WO2022070431A1
WO2022070431A1 PCT/JP2020/037666 JP2020037666W WO2022070431A1 WO 2022070431 A1 WO2022070431 A1 WO 2022070431A1 JP 2020037666 W JP2020037666 W JP 2020037666W WO 2022070431 A1 WO2022070431 A1 WO 2022070431A1
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WIPO (PCT)
Prior art keywords
notification
paging
terminal
reference signal
control information
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Application number
PCT/JP2020/037666
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English (en)
Japanese (ja)
Inventor
拓真 中村
知也 小原
Original Assignee
株式会社Ｎｔｔドコモ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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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 CN202080104968.2A priority Critical patent/CN115997421A/zh
Priority to PCT/JP2020/037666 priority patent/WO2022070431A1/fr
Publication of WO2022070431A1 publication Critical patent/WO2022070431A1/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
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/02—Arrangements for increasing efficiency of notification or paging channel
    • 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

  • NR corresponds to NR-SS, NR-PSS, NR-SSS, NR-PBCH, NR-PRACH and the like. However, even if it is a signal used for NR, it is not always specified as "NR-".
  • the base station 10 transmits a control signal or data to the terminal 20 by DL (Downlink), and receives the control signal or data from the terminal 20 by 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: Secondary Cell) and a primary cell (PCell: Primary Cell) by CA (Carrier Aggregation). Further, the terminal 20 may perform communication via a primary cell of the base station 10 by DC (Dual Connectivity) and a primary secondary cell group cell (PSCell: Primary SCG Cell) of another base station 10.
  • DC Dual Connectivity
  • PSCell Primary SCG Cell
  • PDCCH Physical Downlink Control Channel
  • FIG. 2 is a diagram showing an example (1) of early paging notification.
  • FIG. 2 there is a method of giving early paging notification (Paging early indication before PO) before PO.
  • Early paging notification informs you if you need to wake up and monitor PDCCH at subsequent POs.
  • paging early notification is performed by DCI (Downlink Control Information) -based, RS (Reference signal) -based or sequence-based.
  • DCI Downlink Control Information
  • RS Reference signal
  • FIG. 3 is a diagram showing an example (2) of early paging notification. As shown in FIG. 3, when paging early notification is performed on a DCI basis, the power consumption for receiving or monitoring is relatively high. On the other hand, the reliability is relatively high.
  • FIG. 4 is a diagram showing an example (3) of early paging notification. As shown in FIG. 4, when RS / sequence-based paging early notification is performed, the power consumption for receiving or monitoring is relatively small. On the other hand, the reliability is relatively low.
  • DCI-based early paging notification and RS / sequence-based early paging notification have advantages and disadvantages as shown in Table 1.
  • FIG. 6 is a diagram showing an example (1) of early paging notification in the embodiment of the present invention.
  • the terminal 20 may switch between DCI-based early paging notification and RS / sequence-based early paging notification.
  • the terminal 20 having a good communication environment may perform RS / sequence-based early paging notification.
  • the terminal 20 in which the communication environment is not good may perform DCI-based early paging notification.
  • FIG. 7 is a diagram showing an example (2) of early paging notification in the embodiment of the present invention.
  • DCI-based early paging notification and RS / sequence-based early paging notification may be switched based on the reception intensity or quality measured by the terminal 20.
  • the standard is a parameter such as RSRP (Reference signal received power), SINR (Signal-to-interference-plus-noise ratio), RSSI (Received signal strength indicator), RSRQ (Reference signal received quality), etc. good.
  • the threshold value for switching may be preset by the network in the terminal 20, or may be predetermined by specifications. By setting the threshold value for switching, the terminal 20 can autonomously switch the paging early notification method.
  • RS / sequence-based paging early notification may be performed when SINR is larger than a certain threshold value, and DCI-based paging early notification may be performed when SINR is smaller than a certain threshold value.
  • SINR may be replaced with RSRP, RSSI or RSRQ.
  • FIG. 8 is a diagram showing an example (3) of early paging notification in the embodiment of the present invention.
  • the method of early paging notification may be switched by the information by DCI.
  • the DCI may be an existing DCI or a new DCI.
  • the method of early paging notification may be switched when there is no network instruction, and the method of early notification of paging may be switched when there is a network instruction.
  • the DCI of DCI-based early notification of paging may switch the method of early notification of paging, or the method of early notification of paging may be switched by a DCI other than DCI of DCI-based early notification of paging.
  • DCI of DCI-based early paging notification may switch from DCI-based early paging notification to RS / sequence-based early paging notification.
  • DCIs other than DCI for DCI-based early paging notification may switch from RS / sequence-based early paging notification to DCI-based early paging notification.
  • FIG. 9 is a diagram showing an example (4) of early paging notification in the embodiment of the present invention.
  • the paging early notification method may be switched based on the slot position or type of the reference signal. Further, the paging early notification method may be switched based on the position in another time domain such as the symbol position or the position in the frequency domain, not limited to the slot position of the reference signal.
  • the reference signal may be, for example, TRS, CSI-RS, SSB.
  • the RS / sequence-based paging early notification reference signal may switch the paging early notification method, or the RS / sequence-based paging early notification reference signal may switch the paging early notification method. May be done.
  • the timer when switching from RS / sequence-based early paging notification to DCI-based early paging notification, the timer may be started and DCI-based early paging notification may be continued until the timer expires. When the timer expires, DCI-based early paging notification may be switched to RS / sequence-based early paging notification.
  • the embodiment of the present invention is applied to the switching with the paging early notification of another base. You may.
  • the embodiment of the present invention may be applied to switching of early paging notification by a higher layer such as MAC-CE (Medium Access Control-Control Element) based or RRC (Radio Resource Control) based.
  • MAC-CE Medium Access Control-Control Element
  • RRC Radio Resource Control
  • the wireless communication system it is possible to notify whether or not to monitor the paging opportunity in a format according to the communication status.
  • the base station 10 and the terminal 20 include a function for carrying out the above-described embodiment.
  • the base station 10 and the terminal 20 may each have only a part of the functions in the embodiment.
  • FIG. 11 is a diagram showing an example of the functional configuration of the base station 10 according to the embodiment of the present invention.
  • the base station 10 has a transmission unit 110, a reception unit 120, a setting unit 130, and a control unit 140.
  • the functional configuration shown in FIG. 11 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 performed.
  • the setting unit 130 stores preset setting information and various setting information to be transmitted to the terminal 20.
  • the content of the setting information is, for example, information related to the paging setting.
  • each functional block (components) are realized by any combination of at least one of hardware and software. Further, the method of realizing each functional block is not particularly limited. That is, each functional block may be realized using one physically or logically coupled device, or two or more physically or logically separated devices can be directly or indirectly (eg, for example). , Wired, wireless, etc.) and may be realized using these plurality of devices. The functional block may be realized by combining the software with the one device or the plurality of devices.
  • Functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, and assumption. Broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but limited to these I can't.
  • a functional block (configuration unit) that makes transmission function is called a transmitting unit (transmitting unit) or a transmitter (transmitter).
  • the realization method is not particularly limited.
  • the word “device” can be read as a circuit, device, unit, etc.
  • the hardware configuration of the base station 10 and the terminal 20 may be configured to include one or more of the devices shown in the figure, or may be configured not to include some of the devices.
  • the processor 1001 For each function in the base station 10 and the terminal 20, by loading predetermined software (program) on the hardware such as the processor 1001 and the storage device 1002, the processor 1001 performs an calculation and controls the communication by the communication device 1004. It is realized by controlling at least one of reading and writing of data in the storage 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 configured by 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
  • control unit 140, control unit 240, and the like may be realized by the processor 1001.
  • the processor 1001 reads a program (program code), a software module, data, or the like from at least one of the auxiliary storage device 1003 and the communication device 1004 into the storage device 1002, and executes various processes according to these.
  • a program that causes a computer to execute at least a part of the operations described in the above-described embodiment is used.
  • the control unit 140 of the base station 10 shown in FIG. 11 may be realized by a control program stored in the storage device 1002 and operated by the processor 1001.
  • the control unit 240 of the terminal 20 shown in FIG. 12 may be realized by a control program stored in the storage device 1002 and operated by the processor 1001.
  • 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 by 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, by at least one of ROM (ReadOnlyMemory), EPROM (ErasableProgrammableROM), EEPROM (ElectricallyErasableProgrammableROM), RAM (RandomAccessMemory), and the like. 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 implement the communication method according to the embodiment of the present disclosure.
  • 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 storage medium described above may be, for example, a database, server or other suitable medium containing at least one of the storage device 1002 and the auxiliary storage device 1003.
  • the communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, or the like.
  • the communication device 1004 includes, for example, a high frequency switch, a duplexer, a filter, a frequency synthesizer, and the like in order to realize at least one of frequency division duplex (FDD: Frequency Division Duplex) and time division duplex (TDD: Time Division Duplex). It may be composed of.
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • the transmission / reception unit may be physically or logically separated from each other in the transmission unit and the reception unit.
  • the input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts 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 the bus 1007 for communicating information.
  • the bus 1007 may be configured by using a single bus, or may be configured by using a different bus for each device.
  • the base station 10 and the terminal 20 are hardware such as a microprocessor, a digital signal processor (DSP: Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), and an FPGA (Field Programmable Gate Array). It may be configured to include, 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 hardware.
  • DSP Digital Signal Processor
  • ASIC Application Specific Integrated Circuit
  • PLD Programmable Logic Device
  • FPGA Field Programmable Gate Array
  • the receiving unit that receives the notification indicating whether or not to monitor the paging opportunity via the control information or the reference signal, and the notification unit based on the above notification.
  • a terminal having a control unit for determining whether or not to monitor a paging opportunity is provided, and the reception unit switches whether to receive the notification via control information or a reference signal. ..
  • the terminal 20 can control the power consumption required for paging monitoring or the reliability of the notification by switching the method of early paging notification based on the communication environment, DCI, reference signal or timer. can. That is, in the wireless communication system, it is possible to notify whether or not to monitor the paging opportunity in a format according to the communication status.
  • the receiving unit may receive the notification via a reference signal when the communication environment is good, and may receive the notification via control information when the communication environment is bad.
  • the terminal 20 can switch the method of early paging notification based on the communication environment.
  • the receiving unit receives the notification via the reference signal when the parameter indicating the reception strength or the reception quality is larger than a certain threshold value, and receives the notification via the control information when the parameter indicating the reception strength or the reception quality is smaller than a certain threshold value. May be good.
  • the terminal 20 can switch the method of early paging notification based on the communication environment.
  • the receiving unit may switch whether to receive the notification via the control information or via the reference signal based on the content of the control information, the position or type of the reference signal, or the timer.
  • the terminal 20 can switch the method of early paging notification based on the DCI, the reference signal or the timer.
  • a transmission unit that transmits a notification indicating whether or not to monitor the paging opportunity is transmitted via control information or a reference signal, and paging is performed at the paging opportunity based on the notification. It has a control unit for transmission, and the transmission unit is provided with a base station for switching whether the notification is transmitted via control information or via a reference signal.
  • the terminal 20 can control the power consumption required for paging monitoring or the reliability of the notification by switching the method of early paging notification based on the communication environment, DCI, reference signal or timer. can. That is, in the wireless communication system, it is possible to notify whether or not to monitor the paging opportunity in a format according to the communication status.
  • the paging opportunity is monitored based on the reception procedure for receiving the notification indicating whether or not to monitor the paging opportunity via the control information or the reference signal and the notification.
  • a communication method is provided in which a terminal executes a control procedure for determining whether or not the notification is received via control information or a reference signal.
  • the terminal 20 can control the power consumption required for paging monitoring or the reliability of the notification by switching the method of early paging notification based on the communication environment, DCI, reference signal or timer. can. That is, in the wireless communication system, it is possible to notify whether or not to monitor the paging opportunity in a format according to the communication status.
  • 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.
  • the processing order may be changed as long as there is no contradiction.
  • the base station 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 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 memory, respectively. It may be stored in (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. It may be carried out by broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals, or a combination thereof.
  • 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 disclosure includes LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), and 5G (5th generation mobile communication).
  • system FRA (Future Radio Access), NR (new Radio), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)) )), LTE 802.16 (WiMAX®), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth®, and other systems that utilize appropriate systems and have been extended based on these. It may be applied to at least one of the next generation systems. Further, a plurality of systems may be applied in combination (for example, a combination of at least one of LTE and LTE-A and 5G).
  • the specific operation performed by the base station 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 by the base station 10 and other network nodes other than the base station 10 (for example, MME, S-GW, etc. are conceivable, but it is clear that it can be done by at least one of these).
  • MME, S-GW, etc. are conceivable, but it is clear that it can be done by at least one of these.
  • the case where there is one network node other than the base station 10 is illustrated, but the other network node may be a combination of a plurality of other network nodes (for example, MME and S-GW). ..
  • the information, signals, etc. described in the present disclosure can be output from the upper layer (or lower layer) to the lower layer (or upper layer). Input / output may be performed via a plurality of network nodes.
  • the input / output information and the like may be stored in a specific location (for example, a memory) or may be managed using a management table. Information to be input / output may be overwritten, updated, or added. The output information and the like may be deleted. The input information or the like may be transmitted to another device.
  • the determination in the present disclosure may be made by a value represented by 1 bit (0 or 1), by a boolean value (Boolean: true or false), or by comparison of numerical values (for example). , Comparison with a predetermined value).
  • software, instructions, information, etc. may be transmitted and received via a transmission medium.
  • a transmission medium For example, a website where the software uses at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL: Digital Subscriber Line), etc.) and wireless technology (infrared, microwave, etc.).
  • wired technology coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL: Digital Subscriber Line), etc.
  • wireless technology infrared, microwave, etc.
  • the information, signals, etc. described in this disclosure may be represented using any of a variety of different techniques.
  • data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description are voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may be represented by a combination of.
  • a channel and a symbol may be a signal (signaling).
  • the signal may be a message.
  • the component carrier CC: Component Carrier
  • CC Component Carrier
  • system and “network” used in this disclosure are used interchangeably.
  • the information, parameters, etc. described in the present disclosure may be expressed using an absolute value, a relative value from a predetermined value, or another corresponding information. It may be represented.
  • the radio resource may be one indicated by an index.
  • base station Base Station
  • wireless base station base station
  • base station device fixed station
  • NodeB nodeB
  • eNodeB eNodeB
  • GNB nodeB
  • access point “ transmission point ”,“ reception point ”,“ transmission / reception point ”,“ cell ”,“ sector ”
  • Terms such as “cell group,” “carrier,” and “component carrier” may be used interchangeably.
  • Base stations are sometimes referred to by terms such as macrocells, small cells, femtocells, and picocells.
  • the base station can accommodate one or more (eg, 3) cells. When a base station accommodates multiple cells, the entire base station coverage area can be divided into multiple smaller areas, each smaller area being a base station subsystem (eg, a small indoor base station (RRH:)). Communication services can also be provided by (Remote Radio Head).
  • the term "cell” or “sector” is a part or all of the coverage area of at least one of the base stations and base station subsystems that provide communication services in this coverage. Point to.
  • MS Mobile Station
  • UE User Equipment
  • Mobile stations can be used by those skilled in the art as subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless. It may also be referred to as a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.
  • At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a communication device, or the like.
  • At least one of the base station and the mobile station may be a device mounted on the mobile body, a mobile body itself, or the like.
  • the moving body may be a vehicle (eg, car, airplane, etc.), an unmanned moving body (eg, drone, self-driving car, etc.), or a robot (manned or unmanned). ) May be.
  • at least one of the base station and the mobile station includes a device that does not necessarily move during communication operation.
  • at least one of a base station and a 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 read by the user terminal.
  • the communication between the base station and the user terminal is replaced with the communication between a plurality of terminals 20 (for example, it may be referred to as D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.).
  • D2D Device-to-Device
  • V2X Vehicle-to-Everything
  • Each aspect / embodiment of the present disclosure may be applied to the configuration.
  • the terminal 20 may have the functions of the base station 10 described above.
  • the words such as "up” and “down” may be read as words corresponding to the communication between terminals (for example, "side”).
  • the upstream channel, the downstream channel, and the like may be read as a side channel.
  • the user terminal in the present disclosure may be read as a base station.
  • the base station may have the functions of the above-mentioned user terminal.
  • determining and “determining” used in this disclosure may include a wide variety of actions.
  • “Judgment” and “decision” are, for example, judgment (judging), calculation (calculating), calculation (computing), processing (processing), derivation (deriving), investigation (investigating), search (looking up, search, inquiry). It may include (eg, searching in a table, database or another data structure), ascertaining as “judgment” or “decision”.
  • judgment and “decision” are receiving (for example, receiving information), transmitting (for example, transmitting information), input (input), output (output), and access. It may include (for example, accessing data in memory) to be regarded as “judgment” or “decision”.
  • judgment and “decision” are considered to be “judgment” and “decision” when the things such as solving, selecting, choosing, establishing, and comparing are regarded as “judgment” and “decision”. Can include. That is, “judgment” and “decision” may include considering some action as “judgment” and “decision”. Further, “judgment (decision)” may be read as “assuming", “expecting”, “considering” and the like.
  • the reference signal can also be abbreviated as RS (Reference Signal), and may be called a pilot (Pilot) depending on the applied standard.
  • RS Reference Signal
  • Pilot Pilot
  • the wireless frame may be composed of one or more frames in the time domain. Each one or more frames in the time domain may be referred to as a subframe.
  • the subframe may further be composed of one or more slots in the time domain.
  • the 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 at least one of transmission and reception of a signal or channel.
  • Numerology includes, for example, subcarrier interval (SCS: SubCarrier Spacing), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI: Transmission Time Interval), number of symbols per TTI, wireless frame configuration, and transmitter / receiver. It may indicate at least one of a specific filtering process performed in the frequency domain, a specific windowing process performed by the transmitter / receiver in the time domain, and the like.
  • the slot may be composed of one or more symbols (OFDM (Orthogonal Frequency Division Multiplexing) symbol, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbol, etc.) in the time region. Slots may be time units based on numerology.
  • OFDM Orthogonal Frequency Division Multiplexing
  • SC-FDMA Single Carrier Frequency Division Multiple Access
  • the wireless frame, subframe, slot, minislot and symbol all represent the time unit when transmitting a signal.
  • the radio frame, subframe, slot, minislot and symbol may have different names corresponding to each.
  • one subframe may be called a transmission time interval (TTI), a plurality of consecutive subframes may be called TTI, and one slot or one minislot may be called TTI.
  • TTI transmission time interval
  • You may. That is, at least one of the subframe and TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (eg, 1-13 symbols), or a period longer than 1 ms. May be.
  • the unit representing TTI may be called a slot, a mini slot, or the like instead of a subframe.
  • TTI refers to, for example, the minimum time unit of scheduling in wireless communication.
  • the base station schedules each terminal 20 to allocate radio resources (frequency bandwidth that can be used in each terminal 20, transmission power, etc.) in TTI units.
  • the definition of TTI is not limited to this.
  • TTI may be a transmission time unit such as a channel-encoded data packet (transport block), a code block, or a code word, or may be a processing unit such as scheduling or link adaptation.
  • the time interval for example, the number of symbols
  • the transport block, code block, code word, etc. may be shorter than the TTI.
  • one or more TTIs may be the minimum time unit for scheduling. Further, the number of slots (number of mini-slots) constituting the minimum time unit of the scheduling may be controlled.
  • a TTI having a time length of 1 ms may be referred to as a normal TTI (TTI in LTE Rel. 8-12), a normal TTI, a long TTI, a normal subframe, a normal subframe, a long subframe, a slot, or the like.
  • a TTI shorter than a normal TTI may be referred to as a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a minislot, a subslot, a slot, and the like.
  • the long TTI (eg, normal TTI, subframe, etc.) may be read as a TTI having a time length of more than 1 ms
  • the short TTI eg, shortened TTI, etc.
  • TTI having the above TTI length may be read as TTI having the above TTI length.
  • the resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or a plurality of continuous subcarriers in the frequency domain.
  • the number of subcarriers contained in the RB may be the same regardless of the numerology, and may be, for example, 12.
  • the number of subcarriers contained in the RB may be determined based on numerology.
  • the time domain of the RB may include one or more symbols, and may have a length of 1 slot, 1 mini slot, 1 subframe, or 1 TTI.
  • Each 1TTI, 1 subframe, etc. may be composed of one or a plurality of resource blocks.
  • One or more RBs include a physical resource block (PRB: Physical RB), a sub-carrier group (SCG: Sub-Carrier Group), a resource element group (REG: Resource Element Group), a PRB pair, an RB pair, and the like. May be called.
  • PRB Physical resource block
  • SCG Sub-Carrier Group
  • REG Resource Element Group
  • PRB pair an RB pair, and the like. May be called.
  • the resource block may be composed of one or a plurality of resource elements (RE: Resource Element).
  • RE Resource Element
  • 1RE may be a radio resource area of 1 subcarrier and 1 symbol.
  • the bandwidth part (which may also be called partial bandwidth) may represent a subset of consecutive common resource blocks (RBs) for a certain neurology in a carrier.
  • RBs common resource blocks
  • PRBs may be defined in a BWP and numbered within that BWP.
  • the BWP may include a BWP for UL (UL BWP) and a BWP for DL (DL BWP).
  • UL BWP UL BWP
  • DL BWP DL BWP
  • One or more BWPs may be set in one carrier for the UE.
  • the term "A and B are different” may mean “A and B are different from each other”.
  • the term may mean that "A and B are different from C”.
  • Terms such as “separate” and “combined” may be interpreted in the same way as “different”.
  • DCI in the present disclosure is an example of control information.
  • RSRP, SINR, RSSI and RSRQ are examples of parameters indicating reception strength or reception quality.

Landscapes

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

Abstract

Ce terminal comprend une unité de réception pour recevoir, au moyen d'informations de commande ou d'un signal de référence, une notification indiquant s'il faut ou non surveiller des occasions de radiomessagerie, et une unité de commande pour déterminer, sur la base de la notification, s'il faut ou non surveiller des occasions de radiomessagerie, l'unité de réception permutant entre la réception de la notification au moyen des informations de commande ou la réception de la notification au moyen du signal de référence.
PCT/JP2020/037666 2020-10-02 2020-10-02 Terminal, station de base, et procédé de communication WO2022070431A1 (fr)

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CN202080104968.2A CN115997421A (zh) 2020-10-02 2020-10-02 终端、基站以及通信方法
PCT/JP2020/037666 WO2022070431A1 (fr) 2020-10-02 2020-10-02 Terminal, station de base, et procédé de communication

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Citations (1)

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Publication number Priority date Publication date Assignee Title
US20120122495A1 (en) * 2010-11-11 2012-05-17 Research In Motion Limited System and method for reducing energy consumption of mobile devices using early paging indicator

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
US20120122495A1 (en) * 2010-11-11 2012-05-17 Research In Motion Limited System and method for reducing energy consumption of mobile devices using early paging indicator

Non-Patent Citations (4)

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Title
HUAWEI, HISILICON: "Paging enhancement(s) for UE power saving in IDLE/inactive mode", 3GPP DRAFT; R1-2005262, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. E-meeting; 20200817 - 20200828, 8 August 2020 (2020-08-08), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051917310 *
MEDIATEK INC.: "Evaluation methodology and paging enhancements for idle/inactive mode UE power saving", 3GPP DRAFT; R1-2005615, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. e-Meeting; 20200817 - 20200828, 8 August 2020 (2020-08-08), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051917589 *
NTT DOCOMO, INC.: "Discussion on paging enhancements", 3GPP DRAFT; R1-2009187, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. e-Meeting; 20201026 - 20201113, 23 October 2020 (2020-10-23), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051945517 *
OPPO: "UE Adaptation to the Traffic and UE Power Consumption", 3GPP DRAFT; R1-1902745, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Athens, Greece; 20190225 - 20190301, 16 February 2019 (2019-02-16), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051600440 *

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