WO2022153515A1 - Terminal and communication method - Google Patents
Terminal and communication method Download PDFInfo
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- WO2022153515A1 WO2022153515A1 PCT/JP2021/001381 JP2021001381W WO2022153515A1 WO 2022153515 A1 WO2022153515 A1 WO 2022153515A1 JP 2021001381 W JP2021001381 W JP 2021001381W WO 2022153515 A1 WO2022153515 A1 WO 2022153515A1
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- terminal
- block
- synchronization
- control unit
- receiving
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
Definitions
- the present invention relates to a terminal and a communication method in a wireless communication system.
- Non-Patent Document 1 NR (New Radio) (also called “5G”), which is the successor system to LTE (Long Term Evolution), the requirements are a large-capacity system, high-speed data transmission speed, low delay, and simultaneous operation of many terminals. Techniques that satisfy connection, low cost, power saving, etc. are being studied (for example, Non-Patent Document 1).
- Non-Patent Document 2 For example, in the frequency band from 52.6 GHz to 71 GHz, applicable numerology including subcarrier spacing, channel bandwidth, etc., physical layer design, possible obstacles in actual wireless communication, and the like are being studied.
- the terminal in the idle state or the inactive state tracks the time domain and the frequency domain by receiving the SSB (SS / PBCH block).
- the number of SSBs required for synchronization by the terminal varies depending on the quality of hardware and the reception environment. However, since the number of SSBs required for synchronization in advance is unknown, it was not possible to receive SSBs efficiently.
- the present invention has been made in view of the above points, and can reduce the power consumption required for synchronization in a wireless communication system.
- a receiving unit that receives a block including a synchronization signal and a broadcast channel, and a control unit that performs synchronization based on the block, and the control unit receives the block.
- a terminal is provided that switches between an operation and a second operation of receiving the block, which consumes less power than the first operation.
- LTE Long Term Evolution
- LTE-Advanced LTE-Advanced and later methods (eg, NR) unless otherwise specified.
- SS Synchronization signal
- PSS Primary SS
- SSS Secondary SS
- PBCH Physical broadcast channel
- PRACH Physical
- PDCCH Physical Downlink Control Channel
- PDSCH Physical Downlink Shared Channel
- PUCCH Physical Uplink Control Channel
- PUSCH Physical Uplink Shared Channel
- NR corresponds to NR-SS, NR-PSS, NR-SSS, NR-PBCH, NR-PRACH and the like. However, even if it is a signal used for NR, it is not always specified as "NR-".
- the duplex system may be a TDD (Time Division Duplex) system, an FDD (Frequency Division Duplex) system, or other system (for example, Flexible Duplex, etc.). Method may be used.
- TDD Time Division Duplex
- FDD Frequency Division Duplex
- Method may be used.
- "configuring" the radio parameter or the like may mean that a predetermined value is set in advance (Pre-configure), or the base station 10 or The radio parameter notified from the terminal 20 may be set.
- FIG. 1 is a diagram showing a configuration example of a wireless communication system according to the embodiment of the present invention.
- the wireless communication system according to the embodiment of the present invention includes a base station 10 and a terminal 20 as shown in FIG.
- FIG. 1 shows one base station 10 and one terminal 20, this is an example, and there may be a plurality of each.
- the base station 10 is a communication device that provides one or more cells and performs wireless communication with the terminal 20.
- the physical resources of the radio signal are defined in the time domain and the frequency domain, the time domain may be defined by the number of OFDM (Orthogonal Frequency Division Multiplexing) symbols, and the frequency domain is defined by the number of subcarriers or the number of resource blocks. May be good.
- the base station 10 transmits a synchronization signal and system information to the terminal 20. Synchronous signals are, for example, NR-PSS and NR-SSS.
- the system information is transmitted by, for example, NR-PBCH, and is also referred to as broadcast information.
- the synchronization signal and system information may be referred to as SSB (SS / PBCH block).
- 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
- the terminal 20 is a communication device having a wireless communication function such as a smartphone, a mobile phone, a tablet, a wearable terminal, and a communication module for M2M (Machine-to-Machine). As shown in FIG. 1, the terminal 20 receives a control signal or data from the base station 10 on the DL and transmits the control signal or data to the base station 10 on the UL, thereby providing various types provided by the wireless communication system. Use communication services. Further, the terminal 20 receives various reference signals transmitted from the base station 10 and executes the measurement of the propagation path quality based on the reception result of the reference signals.
- M2M Machine-to-Machine
- TRS Tracking reference signal
- CSI-RS Channel state information reference signal
- FIG. 2 is a diagram showing an operation example (1) related to synchronization.
- FIG. 2 shows an operation of receiving PO (Paging Occasion) after receiving SSB and synchronizing.
- the terminal in the idle state or the inactive state performs tracking in the time domain and the frequency domain by receiving the SSB (SS / PBCH block).
- the number of SSBs required for synchronization by the terminal varies depending on the quality of hardware and the reception environment. For example, as shown in FIG. 2, there is a terminal 20 having one SSB required for synchronization, a terminal 20 having two SSBs required for synchronization, and a terminal having three SSBs required for synchronization. It is assumed that there are as many as 20.
- the SSB set and PO have a period of 1.28 seconds, and the SSB period (periodicity) is, for example, 20 ms.
- FIG. 3 is a diagram showing an operation example (2) related to synchronization.
- the sleep operation of the terminal 20 is classified into Deep Sleep, Light Sleep, and Micro Sleep in ascending order of power consumption according to the sleep time. For example, when one SSB is required for synchronization, as shown in FIG. 3, the power consumed by the terminal 20 differs depending on the reception position of the SSB used for synchronization.
- the Deep Sleep time is longer and the Light Sleep time is shorter than when the SSB far from the PO is used for synchronization. Therefore, the power consumption is reduced.
- the time for Deep Sleep is shorter than that when SSB closest to PO is used for synchronization, and Light Sleep is performed. As the time increases, the power consumption increases.
- FIG. 4 is a diagram showing an operation example (3) related to synchronization.
- the SSB reception operation shown in FIG. 4 is defined as timeline 1 (TL1).
- Power consumption can be reduced by receiving the number of SSBs required for synchronization closest to PO, such as TL1.
- FIG. 4 shows, in order from the top, the case where the number of SSBs required for synchronization is one, the case where the number of SSBs is two, and the case where the number of SSBs is three.
- FIG. 5 is a diagram showing an operation example (4) related to synchronization.
- the SSB reception operation shown in FIG. 5 is defined as timeline 2 (TL2). If the number of SSBs required for synchronization is not known in advance, it is necessary to receive from the first SSB1 like TL2. For example, if there are three SSBs required for synchronization due to communication quality, etc., if reception is started from SSB3 closest to PO, only one SSB can be received, so synchronization is incomplete and PO reception fails. There is a possibility of doing so. Note that FIG. 5 shows, in order from the top, the case where the number of SSBs required for synchronization is one, the case where the number of SSBs is two, and the case where the number of SSBs is three.
- the operation related to SSB reception of the terminal 20 may be newly specified.
- the network may notify the terminal 20 from which SSB the terminal 20 starts receiving, or it may be specified in the specifications in advance.
- FIG. 6 is a diagram for explaining an example of SSB reception timing.
- FIG. 6 shows an operation example when one SSB is required for synchronization. As shown in FIG. 6, since it is unknown from which SSB the reception starts, a WakeUp with a margin is required. That is, the SSB reception timing is unclear.
- FIG. 7 is a diagram for explaining an example of SSB reception timing in the embodiment of the present invention.
- FIG. 7 shows an operation example when one SSB is required for synchronization. Power consumption is consumed because it is known from which SSB the terminal 20 starts reception from the network, or if the specifications are specified in advance, from which SSB the reception starts, as shown in FIG. WakeUp without waste is possible. That is, the SSB reception timing is clear.
- FIG. 8 is a diagram showing an operation example (1) related to synchronization in the embodiment of the present invention.
- FIG. 8 shows an operation example when one SSB is required for synchronization, and the initial state of the timeline is TL2.
- the timer 1 is activated.
- the terminal 20 has completed the synchronization by receiving the SSB 1 .
- the timer 1 is restarted.
- the terminal 20 switches from TL2 to TL1 and changes the operation so as to receive SSB3. At this time, the terminal 20 has completed the synchronization by receiving the SSB 3 .
- the terminal 20 switches from TL1 to TL2. That is, the terminal 20 starts receiving from SSB 1 .
- the terminal 20 may further activate the timer 1. Further, the time until the expiration of the timer 1 and the time until the expiration of the timer 2 may be freely set or may be set based on a multiple of the PO cycle. Further, when the number of SSBs required for synchronization is two, the terminal 20 may receive the SSBs 2 and SSB3 shown in FIG. 3 when the TL1 is switched to the TL2.
- the timeline may be switched based on the reception strength or quality measured by the terminal 20.
- indicators such as RSRP (Reference Signal Received Power), SINR (Signal to Interference plus Noise Retio), RSSI (Received Signal Strength Indicator), and RSRQ (Reference Signal Received Quality) may be used.
- RSRP Reference Signal Received Power
- SINR Signal to Interference plus Noise Retio
- RSSI Receiveived Signal Strength Indicator
- RSRQ Reference Signal Received Quality
- the terminal 20 may switch from TL2 to TL1.
- RSRP, SINR, RSSI or RSRQ falls below a certain threshold value
- the terminal 20 may switch from TL1 to TL2.
- the threshold value may be notified from the network to the terminal 20, or may be specified in the specifications. By setting the threshold value, the terminal 20 can autonomously switch the timeline.
- FIG. 9 is a diagram showing an operation example (2) related to synchronization in the embodiment of the present invention.
- FIG. 9 shows an operation example when one SSB is required for synchronization, and the initial state of the timeline is TL2.
- the terminal 20 activates the timer.
- the timing may be a predetermined period or the entire period.
- the terminal 20 may change the timeline from TL2 to TL1. Further, when the SINR falls below the threshold value while the timer is operating, the terminal 20 may stop and reset the timer.
- the terminal 20 may expire the timer and change the timeline from TL2 to TL1.
- the threshold value may be notified from the network to the terminal 20, or may be specified in the specifications.
- the cycle may be a PO cycle.
- the terminal 20 may switch the timeline based on the information included in the DCI (Downlink Control Information).
- FIG. 10 is a diagram showing an operation example (3) related to synchronization in the embodiment of the present invention.
- FIG. 10 shows an operation example when one SSB is required for synchronization, and the initial state of the timeline is TL2.
- the terminal 20 may switch the timeline based on the information in the paging DCI.
- the terminal 20 may switch the timeline based on the DCI of the paging early notification (Paging Early Indication) or the paging DCI.
- the DCI format may be DCI format 1_0, DCI_format 2_6, or a new DCI format.
- the terminal 20 may switch the timeline based on RS (Reference Signal) or the like.
- FIG. 11 is a diagram showing an operation example (4) related to synchronization in the embodiment of the present invention.
- FIG. 11 shows an operation example when one SSB is required for synchronization, and the initial state of the timeline is TL2.
- the terminal 20 may switch the timeline based on the slot position or type of the reference signal.
- the terminal 20 may switch the timeline when the reference signal or the like is received at a specific resource position (time resource and / or frequency resource).
- TRS Track RS
- CSI-RS Channel State Information RS
- PTRS Phase Tracking RS
- SRS Sounding RS
- the timeline is based on MAC-CE (Medium Access Control-Control Element) -based signaling or RRC (Radio Resource Control) -based signaling. May be switched.
- MAC-CE Medium Access Control-Control Element
- RRC Radio Resource Control
- the timeline related to SSB has been described, but the embodiment of the present invention may be applied to a timeline related to another RS (TRS, CSI-RS, etc.).
- the terminal 20 can switch the timeline related to the reception of the SSB according to the communication environment and the like, and can efficiently receive the SSB for synchronization.
- the power consumption required for synchronization can be reduced.
- the base station 10 and the terminal 20 include a function of 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. 12 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 includes a transmission unit 110, a reception unit 120, a setting unit 130, and a control unit 140.
- the functional configuration shown in FIG. 12 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 a message between network nodes to another network node.
- 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. Further, the transmission unit 110 has a function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL / UL control signal and the like to the terminal 20. In addition, the receiving unit 120 receives a message between network nodes from another network node.
- 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.
- the control unit 140 controls the paging transmission as described in the embodiment.
- 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. 13 is a diagram showing an example of the functional configuration of the terminal 20 according to the embodiment of the present invention.
- 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. 13 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. Further, the receiving unit 220 has a function of receiving NR-PSS, NR-SSS, NR-PBCH, DL / UL / SL control signals and the like transmitted from the base station 10. Further, for example, the transmission unit 210 connects the other terminal 20 to PSCCH (Physical Sidelink Control Channel), PSCH (Physical Sidelink Shared Channel), PSDCH (Physical Sidelink Discovery Channel), PSBCH (Physical Sidelink Broadcast Channel) as D2D communication. Etc., and the receiving unit 220 receives PSCCH, PSCH, PSDCH, PSBCH, etc. from the other terminal 20.
- PSCCH Physical Sidelink Control Channel
- PSCH Physical Sidelink Shared Channel
- PSDCH Physical Sidelink Discovery Channel
- PSBCH Physical Sidelink Broadcast Channel
- the setting unit 230 stores various setting information received from the base station 10 by the receiving unit 220.
- the setting unit 230 also stores preset setting information.
- the content of the setting information is, for example, information related to the paging setting.
- the control unit 240 controls the paging reception as described in the embodiment.
- 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 using one device that is physically or logically connected, or directly or indirectly (for example, by two or more devices that are physically or logically separated). , 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 (component) that functions transmission is called a transmitting unit or a transmitter.
- the method of realizing each of them is not particularly limited.
- the base station 10, the terminal 20, and the like in one embodiment of the present disclosure may function as a computer that processes the wireless communication method of the present disclosure.
- FIG. 14 is a diagram showing an example of the hardware configuration of the base station 10 and the terminal 20 according to the embodiment of the present disclosure.
- the above-mentioned base station 10 and terminal 20 are physically configured as a computer device including a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like. May be good.
- 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 of the base station 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 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.
- 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 peripheral devices, a control device, an arithmetic unit, a register, and the like.
- CPU Central Processing Unit
- the control unit 140, the control unit 240, and the like described above 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 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. 12 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. 13 may be realized by a control program stored in the storage device 1002 and operated by the processor 1001.
- Processor 1001 may be implemented 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, for example, by at least one of ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), 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 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 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 control unit has a receiving unit that receives a block including a synchronization signal and a broadcast channel, and a control unit that performs synchronization based on the block.
- a receiving unit that receives a block including a synchronization signal and a broadcast channel
- a control unit that performs synchronization based on the block.
- the terminal 20 can switch the timeline related to the reception of the SSB according to the communication environment and the like, and can efficiently receive the SSB for synchronization. That is, in the wireless communication system, the power consumption required for synchronization can be reduced.
- the control unit receives the block one or more times until synchronization is completed, and in the second operation, receives the block closest to the paging opportunity a predetermined number of times. May be good.
- the terminal 20 can switch the timeline related to the reception of the SSB according to the communication environment and the like, and can efficiently receive the SSB for synchronization.
- the control unit may switch from the first operation to the second operation when the index indicating the reception environment exceeds the threshold value.
- the control unit may switch from the second operation to the first operation when the index indicating the reception environment falls below the threshold value.
- the control unit activates the first timer when the block is received, and when the first timer expires without changing the number of the blocks required for synchronization per paging opportunity cycle, the control unit may perform the first timer.
- the first operation is switched to the second operation and the second operation is switched to, the second timer is activated, and when the second timer expires, the first operation is started from the second operation. You may switch to the operation of.
- the terminal 20 can switch the timeline related to the reception of the SSB according to the change in the communication environment, and can efficiently receive the SSB for synchronization.
- a first receiving procedure for receiving a block including a synchronization signal and a broadcast channel and a control procedure for performing synchronization based on the block, and receiving the block.
- a communication method in which a terminal executes a procedure of switching between an operation and a second operation of receiving the block, which consumes less power than the first operation.
- the terminal 20 can switch the timeline related to the reception of the SSB according to the communication environment and the like, and can efficiently receive the SSB for synchronization. That is, in the wireless communication system, the power consumption required for synchronization can be reduced.
- 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, EPROM, 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 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 suitable 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.
- 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, it is clear that it can be done by at least one of (but not limited to, MME, S-GW, etc.).
- 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, memory) or may be managed using a management table. Input / output information and the like can 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 comparing numerical values (for example,). , Comparison with a predetermined value).
- Software whether referred to as software, firmware, middleware, microcode, hardware description language, or by any other name, is an instruction, instruction set, code, code segment, program code, program, subprogram, software module.
- Applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, features, etc. should be broadly interpreted.
- 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), etc.) and wireless technology (infrared, microwave, etc.).
- wired technology coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), 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 absolute values, relative values from predetermined values, or using other 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” can 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 (for example, three) cells.
- a base station accommodates multiple cells, the entire coverage area of the base station 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” refers to 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, the mobile body itself, or the like.
- the moving body may be a vehicle (for example, a car, an airplane, etc.), an unmanned moving body (for example, a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned type). ) 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 the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.
- IoT Internet of Things
- the base station in the present disclosure may be 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 called 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 function of the base station 10 described above.
- words such as "up” and “down” may be read as words corresponding to 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 user terminal described above.
- 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). (For example, searching in a table, database or another data structure), 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 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.
- connection means any direct or indirect connection or connection between two or more elements, and each other. It can include the presence of one or more intermediate elements between two “connected” or “combined” elements.
- the connections or connections between the elements may be physical, logical, or a combination thereof.
- connection may be read as "access”.
- the two elements use at least one of one or more wires, cables and printed electrical connections, and, as some non-limiting and non-comprehensive examples, the radio frequency domain. Can be considered to be “connected” or “coupled” to each other using electromagnetic energy having wavelengths in the microwave and light (both visible and invisible) regions.
- the reference signal can also be abbreviated as RS (Reference Signal), and may be called a pilot (Pilot) depending on the applicable standard.
- RS Reference Signal
- Pilot Pilot
- references to elements using designations such as “first” and “second” as used in this disclosure does not generally limit the quantity or order of those elements. These designations can be used in the present disclosure as a convenient way to distinguish between two or more elements. Thus, references to the first and second elements do not mean that only two elements can be adopted, or that the first element must somehow precede the second element.
- each of the above devices may be replaced with a "part”, a “circuit”, a “device”, or the like.
- 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. Subframes may further consist 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 that applies to at least one of the 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, transmitter / receiver.
- SCS SubCarrier Spacing
- TTI Transmission Time Interval
- 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 may be indicated.
- 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 new melody.
- OFDM Orthogonal Frequency Division Multiplexing
- SC-FDMA Single Carrier Frequency Division Multiple Access
- the slot may include a plurality of mini slots. Each minislot may consist of one or more symbols in the time domain.
- the mini-slot may also be referred to as a sub-slot.
- a minislot may consist of a smaller number of symbols than the slot.
- a PDSCH (or PUSCH) transmitted in a time unit larger than the minislot may be referred to as a PDSCH (or PUSCH) mapping type A.
- the PDSCH (or PUSCH) transmitted using the minislot may be referred to as PDSCH (or PUSCH) mapping type B.
- 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
- 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.
- the 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.
- TTIs shorter than normal TTIs may be referred to as shortened TTIs, short TTIs, partial TTIs (partial or fractional TTIs), shortened subframes, short subframes, minislots, subslots, slots, and the like.
- the long TTI (for example, normal TTI, subframe, etc.) may be read as a TTI having a time length of more than 1 ms, and the short TTI (for example, shortened TTI, etc.) is less than the TTI length of the long TTI and 1 ms. It may be read as a 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 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.
- 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.
- the common RB may be specified by the index of the RB with respect to the common reference point of the carrier.
- 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.
- At least one of the configured BWPs may be active, and the UE may not expect to send or receive a given signal / channel outside the active BWP.
- “cell”, “carrier” and the like in this disclosure may be read as “BWP”.
- the above-mentioned structures such as wireless frames, subframes, slots, mini slots and symbols are merely examples.
- the number of subframes contained in a wireless frame the number of slots per subframe or wireless frame, the number of minislots contained within a slot, the number of symbols and RBs contained in a slot or minislot, included in the RB.
- the number of subcarriers, the number of symbols in the TTI, the symbol length, the cyclic prefix (CP) length, and the like can be changed in various ways.
- 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”.
- the notification of predetermined information (for example, the notification of "being X") is not limited to the explicit one, but is performed implicitly (for example, the notification of the predetermined information is not performed). May be good.
- the SSB in the present disclosure is an example of a block including a synchronization signal and a broadcast channel.
- Early paging notification is an example of a notification indicating whether to monitor paging opportunities.
- Base station 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
A terminal, according to the present invention, has: a reception unit that receives a block including a synchronization signal and a broadcast channel; and a control unit that performs synchronization on the basis of the block, wherein the control unit switches between a first operation that is for receiving the block, and a second operation that is for receiving the block and that consumes less power than the first operation.
Description
本発明は、無線通信システムにおける端末及び通信方法に関する。
The present invention relates to a terminal and a communication method in a wireless communication system.
LTE(Long Term Evolution)の後継システムであるNR(New Radio)(「5G」ともいう。)においては、要求条件として、大容量のシステム、高速なデータ伝送速度、低遅延、多数の端末の同時接続、低コスト、省電力等を満たす技術が検討されている(例えば非特許文献1)。
In NR (New Radio) (also called "5G"), which is the successor system to LTE (Long Term Evolution), the requirements are a large-capacity system, high-speed data transmission speed, low delay, and simultaneous operation of many terminals. Techniques that satisfy connection, low cost, power saving, etc. are being studied (for example, Non-Patent Document 1).
NRリリース17では、従来のリリース(例えば非特許文献2)よりも高い周波数帯を使用することが検討されている。例えば、52.6GHzから71GHzまでの周波数帯における、サブキャリア間隔、チャネル帯域幅等を含む適用可能なニューメロロジ、物理レイヤのデザイン、実際の無線通信において想定される障害等が検討されている。
In NR release 17, it is considered to use a higher frequency band than the conventional release (for example, Non-Patent Document 2). For example, in the frequency band from 52.6 GHz to 71 GHz, applicable numerology including subcarrier spacing, channel bandwidth, etc., physical layer design, possible obstacles in actual wireless communication, and the like are being studied.
アイドル状態又は非アクティブ状態にある端末は、SSB(SS/PBCH block)を受信することで、時間領域及び周波数領域のトラッキングを実施する。ハードウェアの品質及び受信環境等により、端末が同期に必要とするSSBの数は異なる。しかしながら、事前に同期に必要とするSSBの数は未知であるため、効率的にSSBを受信することができなかった。
The terminal in the idle state or the inactive state tracks the time domain and the frequency domain by receiving the SSB (SS / PBCH block). The number of SSBs required for synchronization by the terminal varies depending on the quality of hardware and the reception environment. However, since the number of SSBs required for synchronization in advance is unknown, it was not possible to receive SSBs efficiently.
本発明は上記の点に鑑みてなされたものであり、無線通信システムにおいて、同期に要する消費電力を低減させることができる。
The present invention has been made in view of the above points, and can reduce the power consumption required for synchronization in a wireless communication system.
開示の技術によれば、同期信号及び報知チャネルを含むブロックを受信する受信部と、前記ブロックに基づいて同期を行う制御部とを有し、前記制御部は、前記ブロックを受信する第1の動作と、前記第1の動作よりも電力消費が少ない前記ブロックを受信する第2の動作とを切り替える端末が提供される。
According to the disclosed technique, there is a receiving unit that receives a block including a synchronization signal and a broadcast channel, and a control unit that performs synchronization based on the block, and the control unit receives the block. A terminal is provided that switches between an operation and a second operation of receiving the block, which consumes less power than the first operation.
開示の技術によれば、無線通信システムにおいて、同期に要する消費電力を低減させることができる。
According to the disclosed technology, it is possible to reduce the power consumption required for synchronization in a wireless communication system.
以下、図面を参照して本発明の実施の形態を説明する。なお、以下で説明する実施の形態は一例であり、本発明が適用される実施の形態は、以下の実施の形態に限られない。
Hereinafter, embodiments of the present invention will be described with reference to the drawings. The embodiments described below are examples, and the embodiments to which the present invention is applied are not limited to the following embodiments.
本発明の実施の形態の無線通信システムの動作にあたっては、適宜、既存技術が使用される。ただし、当該既存技術は、例えば既存のLTEであるが、既存のLTEに限られない。また、本明細書で使用する用語「LTE」は、特に断らない限り、LTE-Advanced、及び、LTE-Advanced以降の方式(例:NR)を含む広い意味を有するものとする。
Existing techniques are appropriately used in the operation of the wireless communication system according to the embodiment of the present invention. However, the existing technique is, for example, an existing LTE, but is not limited to the existing LTE. Further, the term "LTE" used in the present specification shall have a broad meaning including LTE-Advanced and LTE-Advanced and later methods (eg, NR) unless otherwise specified.
また、以下で説明する本発明の実施の形態では、既存のLTEで使用されているSS(Synchronization signal)、PSS(Primary SS)、SSS(Secondary SS)、PBCH(Physical broadcast channel)、PRACH(Physical random access channel)、PDCCH(Physical Downlink Control Channel)、PDSCH(Physical Downlink Shared Channel)、PUCCH(Physical Uplink Control Channel)、PUSCH(Physical Uplink Shared Channel)等の用語を使用する。これは記載の便宜上のためであり、これらと同様の信号、機能等が他の名称で呼ばれてもよい。また、NRにおける上述の用語は、NR-SS、NR-PSS、NR-SSS、NR-PBCH、NR-PRACH等に対応する。ただし、NRに使用される信号であっても、必ずしも「NR-」と明記しない。
Further, in the embodiment of the present invention described below, SS (Synchronization signal), PSS (Primary SS), SSS (Secondary SS), PBCH (Physical broadcast channel), PRACH (Physical) used in the existing LTE. Terms such as random access channel), PDCCH (Physical Downlink Control Channel), PDSCH (Physical Downlink Shared Channel), PUCCH (Physical Uplink Control Channel), and PUSCH (Physical Uplink Shared Channel) are used. This is for convenience of description, and signals, functions, etc. similar to these may be referred to by other names. Further, the above-mentioned terms in NR correspond 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-".
また、本発明の実施の形態において、複信(Duplex)方式は、TDD(Time Division Duplex)方式でもよいし、FDD(Frequency Division Duplex)方式でもよいし、又はそれ以外(例えば、Flexible Duplex等)の方式でもよい。
Further, in the embodiment of the present invention, the duplex system may be a TDD (Time Division Duplex) system, an FDD (Frequency Division Duplex) system, or other system (for example, Flexible Duplex, etc.). Method may be used.
また、本発明の実施の形態において、無線パラメータ等が「設定される(Configure)」とは、所定の値が予め設定(Pre-configure)されることであってもよいし、基地局10又は端末20から通知される無線パラメータが設定されることであってもよい。
Further, in the embodiment of the present invention, "configuring" the radio parameter or the like may mean that a predetermined value is set in advance (Pre-configure), or the base station 10 or The radio parameter notified from the terminal 20 may be set.
図1は、本発明の実施の形態における無線通信システムの構成例を示す図である。本発明の実施の形態における無線通信システムは、図1に示されるように、基地局10及び端末20を含む。図1には、基地局10及び端末20が1つずつ示されているが、これは例であり、それぞれ複数であってもよい。
FIG. 1 is a diagram showing a configuration example of a wireless communication system according to the embodiment of the present invention. The wireless communication system according to the embodiment of the present invention includes a base station 10 and a terminal 20 as shown in FIG. Although FIG. 1 shows one base station 10 and one terminal 20, this is an example, and there may be a plurality of each.
基地局10は、1つ以上のセルを提供し、端末20と無線通信を行う通信装置である。無線信号の物理リソースは、時間領域及び周波数領域で定義され、時間領域はOFDM(Orthogonal Frequency Division Multiplexing)シンボル数で定義されてもよいし、周波数領域はサブキャリア数又はリソースブロック数で定義されてもよい。基地局10は、同期信号及びシステム情報を端末20に送信する。同期信号は、例えば、NR-PSS及びNR-SSSである。システム情報は、例えば、NR-PBCHにて送信され、報知情報ともいう。同期信号及びシステム情報は、SSB(SS/PBCH block)と呼ばれてもよい。図1に示されるように、基地局10は、DL(Downlink)で制御信号又はデータを端末20に送信し、UL(Uplink)で制御信号又はデータを端末20から受信する。基地局10及び端末20はいずれも、ビームフォーミングを行って信号の送受信を行うことが可能である。また、基地局10及び端末20はいずれも、MIMO(Multiple Input Multiple Output)による通信をDL又はULに適用することが可能である。また、基地局10及び端末20はいずれも、CA(Carrier Aggregation)によるセカンダリセル(SCell:Secondary Cell)及びプライマリセル(PCell:Primary Cell)を介して通信を行ってもよい。さらに、端末20は、DC(Dual Connectivity)による基地局10のプライマリセル及び他の基地局10のプライマリセカンダリセルグループセル(PSCell:Primary SCG Cell)を介して通信を行ってもよい。
The base station 10 is a communication device that provides one or more cells and performs wireless communication with the terminal 20. The physical resources of the radio signal are defined in the time domain and the frequency domain, the time domain may be defined by the number of OFDM (Orthogonal Frequency Division Multiplexing) symbols, and the frequency domain is defined by the number of subcarriers or the number of resource blocks. May be good. The base station 10 transmits a synchronization signal and system information to the terminal 20. Synchronous signals are, for example, NR-PSS and NR-SSS. The system information is transmitted by, for example, NR-PBCH, and is also referred to as broadcast information. The synchronization signal and system information may be referred to as SSB (SS / PBCH block). As shown in FIG. 1, 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.
端末20は、スマートフォン、携帯電話機、タブレット、ウェアラブル端末、M2M(Machine-to-Machine)用通信モジュール等の無線通信機能を備えた通信装置である。図1に示されるように、端末20は、DLで制御信号又はデータを基地局10から受信し、ULで制御信号又はデータを基地局10に送信することで、無線通信システムにより提供される各種通信サービスを利用する。また、端末20は、基地局10から送信される各種の参照信号を受信し、当該参照信号の受信結果に基づいて伝搬路品質の測定を実行する。
The terminal 20 is a communication device having a wireless communication function such as a smartphone, a mobile phone, a tablet, a wearable terminal, and a communication module for M2M (Machine-to-Machine). As shown in FIG. 1, the terminal 20 receives a control signal or data from the base station 10 on the DL and transmits the control signal or data to the base station 10 on the UL, thereby providing various types provided by the wireless communication system. Use communication services. Further, the terminal 20 receives various reference signals transmitted from the base station 10 and executes the measurement of the propagation path quality based on the reception result of the reference signals.
ここで、NRリリース17において、システムパフォーマンスの観点を考慮しつつ、消費電力低減の強化が検討されている。例えば、アイドル状態(idle mode)又は非アクティブ状態(inactive mode)の端末20に、接続状態(connected mode)で利用可能なTRS(Tracking reference signal)又はCSI-RS(Channel state information reference signal)の送信機会を示す情報をシステムオーバヘッドへの影響を最小としながら通知することが検討されている。
Here, in NR Release 17, strengthening of power consumption reduction is being considered while considering the viewpoint of system performance. For example, transmission of TRS (Tracking reference signal) or CSI-RS (Channel state information reference signal) that can be used in the connected state (connected mode) to the terminal 20 in the idle state (idle mode) or inactive state (inactive mode). It is being considered to notify the information indicating the opportunity while minimizing the impact on the system overhead.
図2は、同期に係る動作例(1)を示す図である。図2は、SSBを受信して同期した後、PO(Paging Occasion)を受信する動作を示す。アイドル状態又は非アクティブ状態にある端末は、SSB(SS/PBCH block)を受信することで、時間領域及び周波数領域のトラッキングを実施する。ハードウェアの品質及び受信環境等により、端末が同期に必要とするSSBの数は異なる。例えば、図2に示されるように、同期に必要なSSBが1個の端末20が存在し、同期に必要なSSBが2個の端末20も存在し、同期に必要なSSBが3個の端末20も存在することが想定される。また、図2に示されるように、例えば、SSBのセット及びPOは、1.28秒の周期を有し、SSB周期(periodicity)は、例えば、20msである。
FIG. 2 is a diagram showing an operation example (1) related to synchronization. FIG. 2 shows an operation of receiving PO (Paging Occasion) after receiving SSB and synchronizing. The terminal in the idle state or the inactive state performs tracking in the time domain and the frequency domain by receiving the SSB (SS / PBCH block). The number of SSBs required for synchronization by the terminal varies depending on the quality of hardware and the reception environment. For example, as shown in FIG. 2, there is a terminal 20 having one SSB required for synchronization, a terminal 20 having two SSBs required for synchronization, and a terminal having three SSBs required for synchronization. It is assumed that there are as many as 20. Also, as shown in FIG. 2, for example, the SSB set and PO have a period of 1.28 seconds, and the SSB period (periodicity) is, for example, 20 ms.
図3は、同期に係る動作例(2)を示す図である。端末20のスリープ動作は、スリープする時間によって、消費電力が小さい順に、Deep Sleep、Light Sleep、Micro Sleepに分類される。例えば、同期に必要なSSBが1個である場合、図3に示されるように、同期に用いるSSBの受信位置によって、端末20が消費する電力は異なる。
FIG. 3 is a diagram showing an operation example (2) related to synchronization. The sleep operation of the terminal 20 is classified into Deep Sleep, Light Sleep, and Micro Sleep in ascending order of power consumption according to the sleep time. For example, when one SSB is required for synchronization, as shown in FIG. 3, the power consumed by the terminal 20 differs depending on the reception position of the SSB used for synchronization.
図3に示されるように、POに最も近いSSBを同期に用いた場合、POからある程度離れたSSBを同期に用いる場合と比較して、Deep Sleepする時間が長くなり、Light Sleepする時間が短くなるため、電力消費が小さくなる。一方、図3に示されるように、POからある程度離れたSSBを同期に用いた場合、POに最も近いSSBを同期に用いた場合と比較して、Deep Sleepする時間が短くなり、Light Sleepする時間が長くなるため、電力消費が大きくなる。
As shown in FIG. 3, when the SSB closest to the PO is used for synchronization, the Deep Sleep time is longer and the Light Sleep time is shorter than when the SSB far from the PO is used for synchronization. Therefore, the power consumption is reduced. On the other hand, as shown in FIG. 3, when SSBs that are separated from PO to some extent are used for synchronization, the time for Deep Sleep is shorter than that when SSB closest to PO is used for synchronization, and Light Sleep is performed. As the time increases, the power consumption increases.
上記のように、例えば、同期に必要なSSBが1個である場合、POに最も近いSSBを受信してDeep Sleepする時間を長くすることが望ましい。また、例えば、同期に必要なSSBが複数個である場合も、POに最も近い複数個のSSBを受信することが望ましい。
As described above, for example, when one SSB is required for synchronization, it is desirable to lengthen the time for receiving the SSB closest to PO and performing Deep Sleep. Further, for example, even when there are a plurality of SSBs required for synchronization, it is desirable to receive a plurality of SSBs closest to PO.
一方、事前に同期に必要なSSB数が既知であれば、より電力消費を少なくすることができる。図4は、同期に係る動作例(3)を示す図である。図4に示されるSSBの受信動作を、タイムライン1(TL1)とする。TL1のように、POに最も近い同期に必要な数のSSBを受信することで、消費電力を低減することができる。なお、図4では、上から順に、同期に必要なSSBが1個の場合、2個の場合及び3個の場合を示している。
On the other hand, if the number of SSBs required for synchronization is known in advance, power consumption can be further reduced. FIG. 4 is a diagram showing an operation example (3) related to synchronization. The SSB reception operation shown in FIG. 4 is defined as timeline 1 (TL1). Power consumption can be reduced by receiving the number of SSBs required for synchronization closest to PO, such as TL1. Note that FIG. 4 shows, in order from the top, the case where the number of SSBs required for synchronization is one, the case where the number of SSBs is two, and the case where the number of SSBs is three.
しかしながら、事前に同期に必要とするSSBの数は未知であるため、同期に必要な数以上にSSBを受信することがあった。図5は、同期に係る動作例(4)を示す図である。図5に示されるSSBの受信動作を、タイムライン2(TL2)とする。事前に同期に必要とするSSBの数は既知でない場合、TL2のように、先頭のSSB1から受信する必要がある。例えば、通信品質等に起因して同期に必要なSSBが3個である場合、PO直近のSSB3から受信を開始するとSSBを1個しか受信できないため同期が不完全となり、POの受信に失敗する可能性が生じる。なお、図5では、上から順に、同期に必要なSSBが1個の場合、2個の場合及び3個の場合を示している。
However, since the number of SSBs required for synchronization is unknown in advance, more SSBs may be received than required for synchronization. FIG. 5 is a diagram showing an operation example (4) related to synchronization. The SSB reception operation shown in FIG. 5 is defined as timeline 2 (TL2). If the number of SSBs required for synchronization is not known in advance, it is necessary to receive from the first SSB1 like TL2. For example, if there are three SSBs required for synchronization due to communication quality, etc., if reception is started from SSB3 closest to PO, only one SSB can be received, so synchronization is incomplete and PO reception fails. There is a possibility of doing so. Note that FIG. 5 shows, in order from the top, the case where the number of SSBs required for synchronization is one, the case where the number of SSBs is two, and the case where the number of SSBs is three.
そこで、端末20のSSB受信に関する動作について新たに規定してもよい。例えば、いずれのSSBから端末20が受信を開始するかをネットワークから端末20に通知してもよいし、予め仕様に規定されてもよい。
Therefore, the operation related to SSB reception of the terminal 20 may be newly specified. For example, the network may notify the terminal 20 from which SSB the terminal 20 starts receiving, or it may be specified in the specifications in advance.
図6は、SSB受信タイミングの例を説明するための図である。図6は、同期に必要なSSBが1個の場合の動作例を示す。図6に示されるように、どのSSBから受信を始めるか未知であるため、余裕をもったWakeUpが必要となる。すなわち、SSB受信タイミングは不明確である。
FIG. 6 is a diagram for explaining an example of SSB reception timing. FIG. 6 shows an operation example when one SSB is required for synchronization. As shown in FIG. 6, since it is unknown from which SSB the reception starts, a WakeUp with a margin is required. That is, the SSB reception timing is unclear.
図7は、本発明の実施の形態におけるSSB受信タイミングの例を説明するための図である。図7は、同期に必要なSSBが1個の場合の動作例を示す。いずれのSSBから端末20が受信を開始するかをネットワークから通知されるか、予め仕様に規定された場合、図7に示されるように、どのSSBから受信を始めるか既知であるため、電力消費に無駄がないWakeUpが可能となる。すなわち、SSB受信タイミングは明確である。
FIG. 7 is a diagram for explaining an example of SSB reception timing in the embodiment of the present invention. FIG. 7 shows an operation example when one SSB is required for synchronization. Power consumption is consumed because it is known from which SSB the terminal 20 starts reception from the network, or if the specifications are specified in advance, from which SSB the reception starts, as shown in FIG. WakeUp without waste is possible. That is, the SSB reception timing is clear.
また、他の例として、同期に必要であったSSB数の変化を基準として、タイムラインを切り替えてもよい。図8は、本発明の実施の形態における同期に係る動作例(1)を示す図である。図8は、同期に必要なSSBが1個の場合の動作例であり、タイムラインの初期状態はTL2とする。図8に示されるように、SSBを受信したとき、タイマ1を起動する。このとき、端末20は、SSB1を受信することで同期が完了している。タイマ1を起動後、同期に必要であったSSB数が1個から変わった場合、タイマ1を再起動する。タイマ1が満了した場合、端末20は、TL2からTL1に切り替え、SSB3を受信するように動作を変更する。このとき、端末20は、SSB3を受信することで同期が完了している。タイマ2が満了すると、端末20は、TL1からTL2に切り替える。すなわち、端末20はSSB1から受信を開始する。
Further, as another example, the timeline may be switched based on the change in the number of SSBs required for synchronization. FIG. 8 is a diagram showing an operation example (1) related to synchronization in the embodiment of the present invention. FIG. 8 shows an operation example when one SSB is required for synchronization, and the initial state of the timeline is TL2. As shown in FIG. 8, when the SSB is received, the timer 1 is activated. At this time, the terminal 20 has completed the synchronization by receiving the SSB 1 . After starting the timer 1, if the number of SSBs required for synchronization changes from one, the timer 1 is restarted. When the timer 1 expires, the terminal 20 switches from TL2 to TL1 and changes the operation so as to receive SSB3. At this time, the terminal 20 has completed the synchronization by receiving the SSB 3 . When the timer 2 expires, the terminal 20 switches from TL1 to TL2. That is, the terminal 20 starts receiving from SSB 1 .
なお、タイマ2が満了したとき、端末20はタイマ1をさらに起動してもよい。また、タイマ1の満了までの時間及びタイマ2の満了までの時間は、自由に設定されてもよいし、POの周期の倍数に基づいて設定されてもよい。また、同期に必要なSSBが2個の場合は、TL1からTL2に切り替わったとき、端末20は、図3に示されるSSB2及びSSB3を受信してもよい。
When the timer 2 expires, the terminal 20 may further activate the timer 1. Further, the time until the expiration of the timer 1 and the time until the expiration of the timer 2 may be freely set or may be set based on a multiple of the PO cycle. Further, when the number of SSBs required for synchronization is two, the terminal 20 may receive the SSBs 2 and SSB3 shown in FIG. 3 when the TL1 is switched to the TL2.
また、他の例として、端末20が測定した受信強度又は品質等を基準として、タイムラインを切り替えてもよい。当該基準として、RSRP(Reference Signal Received Power)、SINR(Signal to Interference plus Noise Retio)、RSSI(Received Signal Strength Indicator)、RSRQ(Reference Signal Received Quality)等の指標が使用されてもよい。例えば、RSRP、SINR、RSSI又はRSRQがある閾値を上回った場合、端末20は、TL2からTL1に切り替えてもよい。また、例えば、RSRP、SINR、RSSI又はRSRQがある閾値を下回った場合、端末20は、TL1からTL2に切り替えてもよい。当該閾値は、ネットワークから端末20に通知されてもよいし、仕様で規定されてもよい。当該閾値が設定されることで、端末20は自律的にタイムラインを切り替えることができる。
Further, as another example, the timeline may be switched based on the reception strength or quality measured by the terminal 20. As the standard, indicators such as RSRP (Reference Signal Received Power), SINR (Signal to Interference plus Noise Retio), RSSI (Received Signal Strength Indicator), and RSRQ (Reference Signal Received Quality) may be used. For example, if RSRP, SINR, RSSI or RSRQ exceeds a certain threshold, the terminal 20 may switch from TL2 to TL1. Further, for example, when RSRP, SINR, RSSI or RSRQ falls below a certain threshold value, the terminal 20 may switch from TL1 to TL2. The threshold value may be notified from the network to the terminal 20, or may be specified in the specifications. By setting the threshold value, the terminal 20 can autonomously switch the timeline.
図9は、本発明の実施の形態における同期に係る動作例(2)を示す図である。図9は、同期に必要なSSBが1個の場合の動作例であり、タイムラインの初期状態はTL2とする。図9に示されるように、予め通知もしくは設定されているタイミング中に、SINR(RSRP、RSSI又はRSRQでもよい)が閾値を上回る場合、端末20はタイマを起動する。当該タイミングとは、所定の期間であってもよいし、全期間であってもよい。タイマが満了した時点で、端末20はタイムラインをTL2からTL1に変更してもよい。また、タイマが動作中にSINRが閾値を下回った場合、端末20はタイマを停止しリセットしてもよい。また、現サイクルが終了するまでタイマが動作していた場合、端末20はタイマを満了させ、タイムラインをTL2からTL1に変更してもよい。当該閾値は、ネットワークから端末20に通知されてもよいし、仕様で規定されてもよい。なお、サイクルとは、POの周期であってもよい。
FIG. 9 is a diagram showing an operation example (2) related to synchronization in the embodiment of the present invention. FIG. 9 shows an operation example when one SSB is required for synchronization, and the initial state of the timeline is TL2. As shown in FIG. 9, when the SINR (which may be RSRP, RSSI or RSRQ) exceeds the threshold value during the timing notified or set in advance, the terminal 20 activates the timer. The timing may be a predetermined period or the entire period. When the timer expires, the terminal 20 may change the timeline from TL2 to TL1. Further, when the SINR falls below the threshold value while the timer is operating, the terminal 20 may stop and reset the timer. Further, if the timer is operating until the end of the current cycle, the terminal 20 may expire the timer and change the timeline from TL2 to TL1. The threshold value may be notified from the network to the terminal 20, or may be specified in the specifications. The cycle may be a PO cycle.
また、他の例として、端末20はDCI(Downlink Control Information)に含まれる情報に基づいて、タイムラインを切り替えてもよい。図10は、本発明の実施の形態における同期に係る動作例(3)を示す図である。図10は、同期に必要なSSBが1個の場合の動作例であり、タイムラインの初期状態はTL2とする。図10に示されるように、端末20は、ページングDCI中の情報に基づいてタイムラインを切り替えてもよい。また、図10に示されるように、端末20は、ページング早期通知(Paging Early Indication)のDCI又はページングDCIに基づいて、タイムラインを切り替えてもよい。当該DCIのフォーマットは、DCIフォーマット1_0でもよいし、DCI_フォーマット2_6でもよいし、新たなDCIフォーマットでもよい。
Further, as another example, the terminal 20 may switch the timeline based on the information included in the DCI (Downlink Control Information). FIG. 10 is a diagram showing an operation example (3) related to synchronization in the embodiment of the present invention. FIG. 10 shows an operation example when one SSB is required for synchronization, and the initial state of the timeline is TL2. As shown in FIG. 10, the terminal 20 may switch the timeline based on the information in the paging DCI. Further, as shown in FIG. 10, the terminal 20 may switch the timeline based on the DCI of the paging early notification (Paging Early Indication) or the paging DCI. The DCI format may be DCI format 1_0, DCI_format 2_6, or a new DCI format.
また、他の例として、端末20はRS(Reference Signal)等に基づいて、タイムラインを切り替えてもよい。図11は、本発明の実施の形態における同期に係る動作例(4)を示す図である。図11は、同期に必要なSSBが1個の場合の動作例であり、タイムラインの初期状態はTL2とする。図11に示されるように、端末20は、参照信号のスロット位置又は種類に基づいて、タイムラインを切り替えてもよい。また、端末20は、特定のリソース位置(時間リソース及び/又は周波数リソース)で参照信号等を受信した場合、タイムラインを切り替えてもよい。また、参照信号は、TRS(Tracking RS)、CSI-RS(Channel State Information RS)、PTRS(Phase Tracking RS)、SRS(Sounding RS)等が用いられてもよい。
Further, as another example, the terminal 20 may switch the timeline based on RS (Reference Signal) or the like. FIG. 11 is a diagram showing an operation example (4) related to synchronization in the embodiment of the present invention. FIG. 11 shows an operation example when one SSB is required for synchronization, and the initial state of the timeline is TL2. As shown in FIG. 11, the terminal 20 may switch the timeline based on the slot position or type of the reference signal. Further, the terminal 20 may switch the timeline when the reference signal or the like is received at a specific resource position (time resource and / or frequency resource). Further, as the reference signal, TRS (Tracking RS), CSI-RS (Channel State Information RS), PTRS (Phase Tracking RS), SRS (Sounding RS) or the like may be used.
本発明の実施の形態においては、レイヤ1シグナリングによるタイムラインの切り替えについて説明したが、MAC-CE(Medium Access Control - Control Element)ベースのシグナリング又はRRC(Radio Resource Control)ベースのシグナリングにより、タイムラインが切り替えられてもよい。
In the embodiment of the present invention, switching of the timeline by layer 1 signaling has been described, but the timeline is based on MAC-CE (Medium Access Control-Control Element) -based signaling or RRC (Radio Resource Control) -based signaling. May be switched.
本発明の実施の形態においては、SSBに係るタイムラインについて説明したが、本発明の実施の形態は、他のRS(TRS、CSI-RS等)に係るタイムラインに適用されてもよい。
In the embodiment of the present invention, the timeline related to SSB has been described, but the embodiment of the present invention may be applied to a timeline related to another RS (TRS, CSI-RS, etc.).
上述の実施例により、端末20は、通信環境等に応じて、SSBの受信に係るタイムラインを切り替えることが可能となり、同期するためのSSBを効率よく受信することができる。
According to the above embodiment, the terminal 20 can switch the timeline related to the reception of the SSB according to the communication environment and the like, and can efficiently receive the SSB for synchronization.
すなわち、無線通信システムにおいて、同期に要する消費電力を低減させることができる。
That is, in the wireless communication system, the power consumption required for synchronization can be reduced.
(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10及び端末20の機能構成例を説明する。基地局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 thebase station 10 and the terminal 20 that execute the processes and operations described so far will be described. The base station 10 and the terminal 20 include a function of carrying out the above-described embodiment. However, the base station 10 and the terminal 20 may each have only a part of the functions in the embodiment.
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10及び端末20の機能構成例を説明する。基地局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
<基地局10>
図12は、本発明の実施の形態における基地局10の機能構成の一例を示す図である。図12に示されるように、基地局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12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 10>
FIG. 12 is a diagram showing an example of the functional configuration of thebase station 10 according to the embodiment of the present invention. As shown in FIG. 12, the base station 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. 12 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.
図12は、本発明の実施の形態における基地局10の機能構成の一例を示す図である。図12に示されるように、基地局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12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。 <
FIG. 12 is a diagram showing an example of the functional configuration of the
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、ネットワークノード間メッセージを他のネットワークノードに送信する。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。また、送信部110は、端末20へNR-PSS、NR-SSS、NR-PBCH、DL/UL制御信号等を送信する機能を有する。また、受信部120は、ネットワークノード間メッセージを他のネットワークノードから受信する。
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 a message between network nodes to another network node. 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. Further, the transmission unit 110 has a function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL / UL control signal and the like to the terminal 20. In addition, the receiving unit 120 receives a message between network nodes from another network node.
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格納する。設定情報の内容は、例えば、ページング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. The content of the setting information is, for example, information related to the paging setting.
制御部140は、実施例において説明したように、ページング送信に係る制御を行う。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。
The control unit 140 controls the paging transmission as described in the embodiment. 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13は、本発明の実施の形態における端末20の機能構成の一例を示す図である。図13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13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. 13 is a diagram showing an example of the functional configuration of the terminal 20 according to the embodiment of the present invention. As shown in FIG. 13, the terminal 20 has atransmission unit 210, a reception unit 220, a setting unit 230, and a control unit 240. The functional configuration shown in FIG. 13 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.
図13は、本発明の実施の形態における端末20の機能構成の一例を示す図である。図13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13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。 <
FIG. 13 is a diagram showing an example of the functional configuration of the terminal 20 according to the embodiment of the present invention. As shown in FIG. 13, the terminal 20 has a
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。また、受信部220は、基地局10から送信されるNR-PSS、NR-SSS、NR-PBCH、DL/UL/SL制御信号等を受信する機能を有する。また、例えば、送信部210は、D2D通信として、他の端末20に、PSCCH(Physical Sidelink Control Channel)、PSSCH(Physical Sidelink Shared Channel)、PSDCH(Physical Sidelink Discovery Channel)、PSBCH(Physical Sidelink Broadcast Channel)等を送信し、受信部220は、他の端末20から、PSCCH、PSSCH、PSDCH又はPSBCH等を受信する。
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. Further, the receiving unit 220 has a function of receiving NR-PSS, NR-SSS, NR-PBCH, DL / UL / SL control signals and the like transmitted from the base station 10. Further, for example, the transmission unit 210 connects the other terminal 20 to PSCCH (Physical Sidelink Control Channel), PSCH (Physical Sidelink Shared Channel), PSDCH (Physical Sidelink Discovery Channel), PSBCH (Physical Sidelink Broadcast Channel) as D2D communication. Etc., and the receiving unit 220 receives PSCCH, PSCH, PSDCH, PSBCH, etc. from the other terminal 20.
設定部230は、受信部220により基地局10から受信した各種の設定情報を格納する。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、ページング設定に係る情報等である。
The setting unit 230 stores various setting information received from the base station 10 by the receiving unit 220. The setting unit 230 also stores preset setting information. The content of the setting information is, for example, information related to the paging setting.
制御部240は、実施例において説明したように、ページング受信に係る制御を行う。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 paging reception as described in the embodiment. 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)
上記実施形態の説明に用いたブロック図(図12及び図13)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、ハードウェア及びソフトウェアの少なくとも一方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方法は特に限定されない。すなわち、各機能ブロックは、物理的又は論理的に結合した1つの装置を用いて実現されてもよいし、物理的又は論理的に分離した2つ以上の装置を直接的又は間接的に(例えば、有線、無線などを用いて)接続し、これら複数の装置を用いて実現されてもよい。機能ブロックは、上記1つの装置又は上記複数の装置にソフトウェアを組み合わせて実現されてもよい。 (Hardware configuration)
The block diagrams (FIGS. 12 and 13) used in the description of the above embodiment show blocks of functional units. These functional blocks (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 by using one device that is physically or logically connected, or directly or indirectly (for example, by two or more devices that are physically or logically separated). , 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.
上記実施形態の説明に用いたブロック図(図12及び図13)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、ハードウェア及びソフトウェアの少なくとも一方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方法は特に限定されない。すなわち、各機能ブロックは、物理的又は論理的に結合した1つの装置を用いて実現されてもよいし、物理的又は論理的に分離した2つ以上の装置を直接的又は間接的に(例えば、有線、無線などを用いて)接続し、これら複数の装置を用いて実現されてもよい。機能ブロックは、上記1つの装置又は上記複数の装置にソフトウェアを組み合わせて実現されてもよい。 (Hardware configuration)
The block diagrams (FIGS. 12 and 13) used in the description of the above embodiment show blocks of functional units. These functional blocks (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 by using one device that is physically or logically connected, or directly or indirectly (for example, by two or more devices that are physically or logically separated). , 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.
機能には、判断、決定、判定、計算、算出、処理、導出、調査、探索、確認、受信、送信、出力、アクセス、解決、選択、選定、確立、比較、想定、期待、見做し、報知(broadcasting)、通知(notifying)、通信(communicating)、転送(forwarding)、構成(configuring)、再構成(reconfiguring)、割り当て(allocating、mapping)、割り振り(assigning)などがあるが、これらに限られない。たとえば、送信を機能させる機能ブロック(構成部)は、送信部(transmitting unit)や送信機(transmitter)と呼称される。いずれも、上述したとおり、実現方法は特に限定されない。
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. For example, a functional block (component) that functions transmission is called a transmitting unit or a transmitter. As described above, the method of realizing each of them is not particularly limited.
例えば、本開示の一実施の形態における基地局10、端末20等は、本開示の無線通信方法の処理を行うコンピュータとして機能してもよい。図14は、本開示の一実施の形態に係る基地局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。上述の基地局10及び端末20は、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などを含むコンピュータ装置として構成されてもよい。
For example, the base station 10, the terminal 20, and the like in one embodiment of the present disclosure may function as a computer that processes the wireless communication method of the present disclosure. FIG. 14 is a diagram showing an example of the hardware configuration of the base station 10 and the terminal 20 according to the embodiment of the present disclosure. The above-mentioned base station 10 and terminal 20 are physically configured as a computer device including a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like. May be good.
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10及び端末20のハードウェア構成は、図に示した各装置を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 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.
基地局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によって、プロセッサ1001が演算を行い、通信装置1004による通信を制御したり、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書き込みの少なくとも一方を制御したりすることによって実現される。
For each function of the base station 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 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.
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。例えば、上述の制御部140、制御部240等は、プロセッサ1001によって実現されてもよい。
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 peripheral devices, a control device, an arithmetic unit, a register, and the like. For example, the control unit 140, the control unit 240, and the like described above may be realized by the processor 1001.
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等を、補助記憶装置1003及び通信装置1004の少なくとも一方から記憶装置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、上述の実施の形態において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12に示した基地局10の制御部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13に示した端末20の制御部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によって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以上のチップによって実装されてもよい。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, 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. 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 control unit 140 of the base station 10 shown in FIG. 12 may be realized by a control program stored in the storage device 1002 and operated by the processor 1001. Further, for example, the control unit 240 of the terminal 20 shown in FIG. 13 may be realized by a control program stored in the storage device 1002 and operated by the processor 1001. Although the above-mentioned various processes have been described as being executed by one processor 1001, they may be executed simultaneously or sequentially by two or more processors 1001. Processor 1001 may be implemented by 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つによって構成されてもよい。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、本開示の一実施の形態に係る通信方法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, for example, by at least one of ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), 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.
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つによって構成されてもよい。上述の記憶媒体は、例えば、記憶装置1002及び補助記憶装置1003の少なくとも一方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 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.
通信装置1004は、有線ネットワーク及び無線ネットワークの少なくとも一方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、通信モジュールなどともいう。通信装置1004は、例えば周波数分割複信(FDD:Frequency Division Duplex)及び時分割複信(TDD:Time Division Duplex)の少なくとも一方を実現するために、高周波スイッチ、デュプレクサ、フィルタ、周波数シンセサイザなどを含んで構成されてもよい。例えば、送受信アンテナ、アンプ部、送受信部、伝送路インターフェース等は、通信装置1004によって実現されてもよい。送受信部は、送信部と受信部とで、物理的に、または論理的に分離された実装がなされてもよい。
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. For example, the transmission / reception antenna, the amplifier unit, the transmission / reception unit, the transmission line interface, and the like may be realized by the communication device 1004. The transmission / reception unit may be physically or logically separated from each other in the transmission unit and the reception unit.
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によって接続される。バス1007は、単一のバスを用いて構成されてもよいし、装置間ごとに異なるバスを用いて構成されてもよい。
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 configured by using a single bus, or may be configured by using a different bus for each device.
また、基地局10及び端末20は、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つを用いて実装されてもよい。
Further, 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.
(実施の形態のまとめ)
以上、説明したように、本発明の実施の形態によれば、同期信号及び報知チャネルを含むブロックを受信する受信部と、前記ブロックに基づいて同期を行う制御部とを有し、前記制御部は、前記ブロックを受信する第1の動作と、前記第1の動作よりも電力消費が少ない前記ブロックを受信する第2の動作とを切り替える端末が提供される。 (Summary of embodiments)
As described above, according to the embodiment of the present invention, the control unit has a receiving unit that receives a block including a synchronization signal and a broadcast channel, and a control unit that performs synchronization based on the block. Provides a terminal that switches between a first operation of receiving the block and a second operation of receiving the block, which consumes less power than the first operation.
以上、説明したように、本発明の実施の形態によれば、同期信号及び報知チャネルを含むブロックを受信する受信部と、前記ブロックに基づいて同期を行う制御部とを有し、前記制御部は、前記ブロックを受信する第1の動作と、前記第1の動作よりも電力消費が少ない前記ブロックを受信する第2の動作とを切り替える端末が提供される。 (Summary of embodiments)
As described above, according to the embodiment of the present invention, the control unit has a receiving unit that receives a block including a synchronization signal and a broadcast channel, and a control unit that performs synchronization based on the block. Provides a terminal that switches between a first operation of receiving the block and a second operation of receiving the block, which consumes less power than the first operation.
上記の構成により、端末20は、通信環境等に応じて、SSBの受信に係るタイムラインを切り替えることが可能となり、同期するためのSSBを効率よく受信することができる。すなわち、無線通信システムにおいて、同期に要する消費電力を低減させることができる。
With the above configuration, the terminal 20 can switch the timeline related to the reception of the SSB according to the communication environment and the like, and can efficiently receive the SSB for synchronization. That is, in the wireless communication system, the power consumption required for synchronization can be reduced.
前記制御部は、前記第1の動作において、同期が完了するまで前記ブロックを1以上の回数受信し、前記第2の動作において、ページング機会に最も近い前記ブロックを予め定められた回数受信してもよい。当該構成により、端末20は、通信環境等に応じて、SSBの受信に係るタイムラインを切り替えることが可能となり、同期するためのSSBを効率よく受信することができる。
In the first operation, the control unit receives the block one or more times until synchronization is completed, and in the second operation, receives the block closest to the paging opportunity a predetermined number of times. May be good. With this configuration, the terminal 20 can switch the timeline related to the reception of the SSB according to the communication environment and the like, and can efficiently receive the SSB for synchronization.
前記制御部は、受信環境を示す指標が閾値を上回った場合、前記第1の動作から前記第2の動作に切り替えてもよい。当該構成により、端末20は、通信環境等に応じて、SSBの受信に係るタイムラインを切り替えることが可能となり、同期するためのSSBを効率よく受信することができる。
The control unit may switch from the first operation to the second operation when the index indicating the reception environment exceeds the threshold value. With this configuration, the terminal 20 can switch the timeline related to the reception of the SSB according to the communication environment and the like, and can efficiently receive the SSB for synchronization.
前記制御部は、受信環境を示す指標が閾値を下回った場合、前記第2の動作から前記第1の動作に切り替えてもよい。当該構成により、端末20は、通信環境等に応じて、SSBの受信に係るタイムラインを切り替えることが可能となり、同期するためのSSBを効率よく受信することができる。
The control unit may switch from the second operation to the first operation when the index indicating the reception environment falls below the threshold value. With this configuration, the terminal 20 can switch the timeline related to the reception of the SSB according to the communication environment and the like, and can efficiently receive the SSB for synchronization.
前記制御部は、前記ブロックを受信したとき第1のタイマを起動し、ページング機会1周期あたりの同期に必要であった前記ブロックの数が変化しないまま前記第1のタイマが満了した場合、前記第1の動作から前記第2の動作に切り替え、前記第2の動作に切り替えたとき、第2のタイマを起動し、前記第2のタイマが満了した場合、前記第2の動作から前記第1の動作に切り替えてもよい。当該構成により、端末20は、通信環境の変化に応じて、SSBの受信に係るタイムラインを切り替えることが可能となり、同期するためのSSBを効率よく受信することができる。
The control unit activates the first timer when the block is received, and when the first timer expires without changing the number of the blocks required for synchronization per paging opportunity cycle, the control unit may perform the first timer. When the first operation is switched to the second operation and the second operation is switched to, the second timer is activated, and when the second timer expires, the first operation is started from the second operation. You may switch to the operation of. With this configuration, the terminal 20 can switch the timeline related to the reception of the SSB according to the change in the communication environment, and can efficiently receive the SSB for synchronization.
また、本発明の実施の形態によれば、同期信号及び報知チャネルを含むブロックを受信する受信手順と、前記ブロックに基づいて同期を行う制御手順とを有し、前記ブロックを受信する第1の動作と、前記第1の動作よりも電力消費が少ない前記ブロックを受信する第2の動作とを切り替える手順を端末が実行する通信方法が提供される。
Further, according to the embodiment of the present invention, there is a first receiving procedure for receiving a block including a synchronization signal and a broadcast channel, and a control procedure for performing synchronization based on the block, and receiving the block. Provided is a communication method in which a terminal executes a procedure of switching between an operation and a second operation of receiving the block, which consumes less power than the first operation.
上記の構成により、端末20は、通信環境等に応じて、SSBの受信に係るタイムラインを切り替えることが可能となり、同期するためのSSBを効率よく受信することができる。すなわち、無線通信システムにおいて、同期に要する消費電力を低減させることができる。
With the above configuration, the terminal 20 can switch the timeline related to the reception of the SSB according to the communication environment and the like, and can efficiently receive the SSB for synchronization. That is, in the wireless communication system, the power consumption required for synchronization can be reduced.
With the above configuration, the terminal 20 can switch the timeline related to the reception of the SSB according to the communication environment and the like, and can efficiently receive the SSB for synchronization. That is, in the wireless communication system, the power consumption required for synchronization can be reduced.
(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 inventions are 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 items described in two or more items may be used in combination as necessary, and 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. Regarding the processing procedure described in the embodiment, the processing order may be changed as long as there is no contradiction. For convenience of processing description, thebase 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, EPROM, registers, hard disk (HDD), removable disk, CD-ROM, database, server or any other suitable storage medium.
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 inventions are 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 items described in two or more items may be used in combination as necessary, and 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. Regarding the processing procedure described in the embodiment, the processing order may be changed as long as there is no contradiction. For convenience of processing description, the
また、情報の通知は、本開示で説明した態様/実施形態に限られず、他の方法を用いて行われてもよい。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、報知情報(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 the present disclosure, and may be performed by using another method. 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.
本開示において説明した各態様/実施形態は、LTE(Long Term Evolution)、LTE-A(LTE-Advanced)、SUPER 3G、IMT-Advanced、4G(4th generation mobile communication system)、5G(5th generation mobile communication system)、FRA(Future Radio Access)、NR(new Radio)、W-CDMA(登録商標)、GSM(登録商標)、CDMA2000、UMB(Ultra Mobile Broadband)、IEEE 802.11(Wi-Fi(登録商標))、IEEE 802.16(WiMAX(登録商標))、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これらに基づいて拡張された次世代システムの少なくとも一つに適用されてもよい。また、複数のシステムが組み合わされて(例えば、LTE及びLTE-Aの少なくとも一方と5Gとの組み合わせ等)適用されてもよい。
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 suitable 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).
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、本開示において説明した方法については、例示的な順序を用いて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 in the present disclosure present elements of various steps using exemplary order, and are not limited to the particular order presented.
本明細書において基地局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10及び基地局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)の少なくとも1つ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、他のネットワークノードは、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 10 in the present specification may be performed by its upper node. In a network consisting of one or more network nodes having a base station 10, 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, it is clear that it can be done by at least one of (but not limited to, MME, S-GW, etc.). Although the case where there is one network node other than the base station 10 is illustrated above, the other network node may be a combination of a plurality of other network nodes (for example, MME and S-GW). ..
本開示において説明した情報又は信号等は、上位レイヤ(又は下位レイヤ)から下位レイヤ(又は上位レイヤ)へ出力され得る。複数のネットワークノードを介して入出力されてもよい。
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.
入出力された情報等は特定の場所(例えば、メモリ)に保存されてもよいし、管理テーブルを用いて管理してもよい。入出力される情報等は、上書き、更新、又は追記され得る。出力された情報等は削除されてもよい。入力された情報等は他の装置へ送信されてもよい。
The input / output information and the like may be stored in a specific location (for example, memory) or may be managed using a management table. Input / output information and the like can 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.
本開示における判定は、1ビットで表される値(0か1か)によって行われてもよいし、真偽値(Boolean:true又はfalse)によって行われてもよいし、数値の比較(例えば、所定の値との比較)によって行われてもよい。
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 comparing numerical values (for example,). , Comparison with a predetermined value).
ソフトウェアは、ソフトウェア、ファームウェア、ミドルウェア、マイクロコード、ハードウェア記述言語と呼ばれるか、他の名称で呼ばれるかを問わず、命令、命令セット、コード、コードセグメント、プログラムコード、プログラム、サブプログラム、ソフトウェアモジュール、アプリケーション、ソフトウェアアプリケーション、ソフトウェアパッケージ、ルーチン、サブルーチン、オブジェクト、実行可能ファイル、実行スレッド、手順、機能などを意味するよう広く解釈されるべきである。
Software, whether referred to as software, firmware, middleware, microcode, hardware description language, or by any other name, is an instruction, instruction set, code, code segment, program code, program, subprogram, software module. , Applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, features, etc. should be broadly interpreted.
また、ソフトウェア、命令、情報などは、伝送媒体を介して送受信されてもよい。例えば、ソフトウェアが、有線技術(同軸ケーブル、光ファイバケーブル、ツイストペア、デジタル加入者回線(DSL:Digital Subscriber Line)など)及び無線技術(赤外線、マイクロ波など)の少なくとも一方を使用してウェブサイト、サーバ、又は他のリモートソースから送信される場合、これらの有線技術及び無線技術の少なくとも一方は、伝送媒体の定義内に含まれる。
Further, software, instructions, information, etc. may be transmitted and received via 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), etc.) and wireless technology (infrared, microwave, etc.). When transmitted from a server, or other remote source, at least one of these wired and wireless technologies is included within the definition of transmission medium.
本開示において説明した情報、信号などは、様々な異なる技術のいずれかを使用して表されてもよい。例えば、上記の説明全体に渡って言及され得るデータ、命令、コマンド、情報、信号、ビット、シンボル、チップなどは、電圧、電流、電磁波、磁界若しくは磁性粒子、光場若しくは光子、又はこれらの任意の組み合わせによって表されてもよい。
The information, signals, etc. described in this disclosure may be represented using any of a variety of different techniques. For example, 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.
なお、本開示において説明した用語及び本開示の理解に必要な用語については、同一の又は類似する意味を有する用語と置き換えてもよい。例えば、チャネル及びシンボルの少なくとも一方は信号(シグナリング)であってもよい。また、信号はメッセージであってもよい。また、コンポーネントキャリア(CC:Component Carrier)は、キャリア周波数、セル、周波数キャリアなどと呼ばれてもよい。
Note that the terms explained in the present disclosure and the terms necessary for understanding the present disclosure may be replaced with terms having the same or similar meanings. For example, at least one of a channel and a symbol may be a signal (signaling). Also, the signal may be a message. Further, the component carrier (CC: Component Carrier) may be referred to as a carrier frequency, a cell, a frequency carrier, or the like.
本開示において使用する「システム」及び「ネットワーク」という用語は、互換的に使用される。
The terms "system" and "network" used in this disclosure are used interchangeably.
また、本開示において説明した情報、パラメータなどは、絶対値を用いて表されてもよいし、所定の値からの相対値を用いて表されてもよいし、対応する別の情報を用いて表されてもよい。例えば、無線リソースはインデックスによって指示されるものであってもよい。
In addition, the information, parameters, etc. described in the present disclosure may be expressed using absolute values, relative values from predetermined values, or using other corresponding information. It may be represented. For example, the radio resource may be one indicated by an index.
上述したパラメータに使用する名称はいかなる点においても限定的な名称ではない。さらに、これらのパラメータを使用する数式等は、本開示で明示的に開示したものと異なる場合もある。様々なチャネル(例えば、PUCCH、PDCCHなど)及び情報要素は、あらゆる好適な名称によって識別できるので、これらの様々なチャネル及び情報要素に割り当てている様々な名称は、いかなる点においても限定的な名称ではない。
The names used for the above parameters are not limited in any respect. Further, mathematical formulas and the like using these parameters may differ from those explicitly disclosed in this disclosure. Since the various channels (eg, PUCCH, PDCCH, etc.) and information elements can be identified by any suitable name, the various names assigned to these various channels and information elements are in any respect limited names. is not.
本開示においては、「基地局(BS:Base Station)」、「無線基地局」、「基地局装置」、「固定局(fixed station)」、「NodeB」、「eNodeB(eNB)」、「gNodeB(gNB)」、「アクセスポイント(access point)」、「送信ポイント(transmission point)」、「受信ポイント(reception point)、「送受信ポイント(transmission/reception point)」、「セル」、「セクタ」、「セルグループ」、「キャリア」、「コンポーネントキャリア」などの用語は、互換的に使用され得る。基地局は、マクロセル、スモールセル、フェムトセル、ピコセルなどの用語で呼ばれる場合もある。
In this disclosure, "base station (BS: Base Station)", "wireless base station", "base station device", "fixed station", "NodeB", "eNodeB (eNB)", "gNodeB" (GNB) ”,“ access point ”,“ transmission point ”,“ reception point ”,“ transmission / reception point ”,“ cell ”,“ sector ”, Terms such as "cell group," "carrier," and "component carrier" can be used interchangeably. Base stations are sometimes referred to by terms such as macrocells, small cells, femtocells, and picocells.
基地局は、1つ又は複数(例えば、3つ)のセルを収容することができる。基地局が複数のセルを収容する場合、基地局のカバレッジエリア全体は複数のより小さいエリアに区分でき、各々のより小さいエリアは、基地局サブシステム(例えば、屋内用の小型基地局(RRH:Remote Radio Head)によって通信サービスを提供することもできる。「セル」又は「セクタ」という用語は、このカバレッジにおいて通信サービスを行う基地局及び基地局サブシステムの少なくとも一方のカバレッジエリアの一部又は全体を指す。
The base station can accommodate one or more (for example, three) cells. When a base station accommodates multiple cells, the entire coverage area of the base station 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" refers to 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.
本開示においては、「移動局(MS:Mobile Station)」、「ユーザ端末(user terminal)」、「ユーザ装置(UE:User Equipment)」、「端末」などの用語は、互換的に使用され得る。
In the present disclosure, terms such as "mobile station (MS: Mobile Station)", "user terminal", "user device (UE: User Equipment)", and "terminal" may be used interchangeably. ..
移動局は、当業者によって、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。
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.
基地局及び移動局の少なくとも一方は、送信装置、受信装置、通信装置などと呼ばれてもよい。なお、基地局及び移動局の少なくとも一方は、移動体に搭載されたデバイス、移動体自体などであってもよい。当該移動体は、乗り物(例えば、車、飛行機など)であってもよいし、無人で動く移動体(例えば、ドローン、自動運転車など)であってもよいし、ロボット(有人型又は無人型)であってもよい。なお、基地局及び移動局の少なくとも一方は、必ずしも通信動作時に移動しない装置も含む。例えば、基地局及び移動局の少なくとも一方は、センサなどのIoT(Internet of Things)機器であってもよい。
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, the mobile body itself, or the like. The moving body may be a vehicle (for example, a car, an airplane, etc.), an unmanned moving body (for example, a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned type). ) May be. It should be noted that at least one of the base station and the mobile station includes a device that does not necessarily move during communication operation. For example, at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.
また、本開示における基地局は、ユーザ端末で読み替えてもよい。例えば、基地局及びユーザ端末間の通信を、複数の端末20間の通信(例えば、D2D(Device-to-Device)、V2X(Vehicle-to-Everything)などと呼ばれてもよい)に置き換えた構成について、本開示の各態様/実施形態を適用してもよい。この場合、上述の基地局10が有する機能を端末20が有する構成としてもよい。また、「上り」及び「下り」などの文言は、端末間通信に対応する文言(例えば、「サイド(side)」)で読み替えられてもよい。例えば、上りチャネル、下りチャネルなどは、サイドチャネルで読み替えられてもよい。
Further, the base station in the present disclosure may be read by the user terminal. For example, 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 called D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.). Each aspect / embodiment of the present disclosure may be applied to the configuration. In this case, the terminal 20 may have the function of the base station 10 described above. In addition, words such as "up" and "down" may be read as words corresponding to communication between terminals (for example, "side"). For example, the upstream channel, the downstream channel, and the like may be read as a side channel.
同様に、本開示におけるユーザ端末は、基地局で読み替えてもよい。この場合、上述のユーザ端末が有する機能を基地局が有する構成としてもよい。
Similarly, the user terminal in the present disclosure may be read as a base station. In this case, the base station may have the functions of the user terminal described above.
本開示で使用する「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、search、inquiry)(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」したとみなす事などを含み得る。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」したとみなす事などを含み得る。また、「判断」、「決定」は、解決(resolving)、選択(selecting)、選定(choosing)、確立(establishing)、比較(comparing)などした事を「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。また、「判断(決定)」は、「想定する(assuming)」、「期待する(expecting)」、「みなす(considering)」などで読み替えられてもよい。
The terms "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). (For example, searching in a table, database or another data structure), ascertaining may be regarded as "judgment" or "decision". Also, "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 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.
「接続された(connected)」、「結合された(coupled)」という用語、又はこれらのあらゆる変形は、2又はそれ以上の要素間の直接的又は間接的なあらゆる接続又は結合を意味し、互いに「接続」又は「結合」された2つの要素間に1又はそれ以上の中間要素が存在することを含むことができる。要素間の結合又は接続は、物理的なものであっても、論理的なものであっても、或いはこれらの組み合わせであってもよい。例えば、「接続」は「アクセス」で読み替えられてもよい。本開示で使用する場合、2つの要素は、1又はそれ以上の電線、ケーブル及びプリント電気接続の少なくとも一つを用いて、並びにいくつかの非限定的かつ非包括的な例として、無線周波数領域、マイクロ波領域及び光(可視及び不可視の両方)領域の波長を有する電磁エネルギーなどを用いて、互いに「接続」又は「結合」されると考えることができる。
The terms "connected", "coupled", or any variation thereof, mean any direct or indirect connection or connection between two or more elements, and each other. It can include the presence of one or more intermediate elements between two "connected" or "combined" elements. The connections or connections between the elements may be physical, logical, or a combination thereof. For example, "connection" may be read as "access". As used in the present disclosure, the two elements use at least one of one or more wires, cables and printed electrical connections, and, as some non-limiting and non-comprehensive examples, the radio frequency domain. Can be considered to be "connected" or "coupled" to each other using electromagnetic energy having wavelengths in the microwave and light (both visible and invisible) regions.
参照信号は、RS(Reference Signal)と略称することもでき、適用される標準によってパイロット(Pilot)と呼ばれてもよい。
The reference signal can also be abbreviated as RS (Reference Signal), and may be called a pilot (Pilot) depending on the applicable standard.
本開示において使用する「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 in this disclosure does not mean "based on" unless otherwise stated. In other words, the statement "based on" means both "based only" and "at least based on".
本開示において使用する「第1の」、「第2の」などの呼称を使用した要素へのいかなる参照も、それらの要素の量又は順序を全般的に限定しない。これらの呼称は、2つ以上の要素間を区別する便利な方法として本開示において使用され得る。したがって、第1及び第2の要素への参照は、2つの要素のみが採用され得ること、又は何らかの形で第1の要素が第2の要素に先行しなければならないことを意味しない。
Any reference to elements using designations such as "first" and "second" as used in this disclosure does not generally limit the quantity or order of those elements. These designations can be used in the present disclosure as a convenient way to distinguish between two or more elements. Thus, references to the first and second elements do not mean that only two elements can be adopted, or that the first element must somehow precede the second element.
上記の各装置の構成における「手段」を、「部」、「回路」、「デバイス」等に置き換えてもよい。
The "means" in the configuration of each of the above devices may be replaced with a "part", a "circuit", a "device", or the like.
本開示において、「含む(include)」、「含んでいる(including)」及びそれらの変形が使用されている場合、これらの用語は、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、本開示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。
When "include", "including" and variations thereof are used in the present disclosure, these terms are as comprehensive as the term "comprising". Is intended. Furthermore, the term "or" used in the present disclosure is intended not to be an exclusive OR.
無線フレームは時間領域において1つ又は複数のフレームによって構成されてもよい。時間領域において1つ又は複数の各フレームはサブフレームと呼ばれてもよい。サブフレームは更に時間領域において1つ又は複数のスロットによって構成されてもよい。サブフレームは、ニューメロロジ(numerology)に依存しない固定の時間長(例えば、1ms)であってもよい。
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. Subframes may further consist 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.
ニューメロロジは、ある信号又はチャネルの送信及び受信の少なくとも一方に適用される通信パラメータであってもよい。ニューメロロジは、例えば、サブキャリア間隔(SCS:SubCarrier Spacing)、帯域幅、シンボル長、サイクリックプレフィックス長、送信時間間隔(TTI:Transmission Time Interval)、TTIあたりのシンボル数、無線フレーム構成、送受信機が周波数領域において行う特定のフィルタリング処理、送受信機が時間領域において行う特定のウィンドウイング処理などの少なくとも1つを示してもよい。
The numerology may be a communication parameter that applies to at least one of the 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, transmitter / receiver. 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 may be indicated.
スロットは、時間領域において1つ又は複数のシンボル(OFDM(Orthogonal Frequency Division Multiplexing)シンボル、SC-FDMA(Single Carrier Frequency Division Multiple Access)シンボル等)で構成されてもよい。スロットは、ニューメロロジに基づく時間単位であってもよい。
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 new melody.
スロットは、複数のミニスロットを含んでもよい。各ミニスロットは、時間領域において1つ又は複数のシンボルによって構成されてもよい。また、ミニスロットは、サブスロットと呼ばれてもよい。ミニスロットは、スロットよりも少ない数のシンボルによって構成されてもよい。ミニスロットより大きい時間単位で送信されるPDSCH(又はPUSCH)は、PDSCH(又はPUSCH)マッピングタイプAと呼ばれてもよい。ミニスロットを用いて送信されるPDSCH(又はPUSCH)は、PDSCH(又はPUSCH)マッピングタイプBと呼ばれてもよい。
The slot may include a plurality of mini slots. Each minislot may consist of one or more symbols in the time domain. The mini-slot may also be referred to as a sub-slot. A minislot may consist of a smaller number of symbols than the slot. A PDSCH (or PUSCH) transmitted in a time unit larger than the minislot may be referred to as a PDSCH (or PUSCH) mapping type A. The PDSCH (or PUSCH) transmitted using the minislot may be referred to as PDSCH (or PUSCH) mapping type B.
無線フレーム、サブフレーム、スロット、ミニスロット及びシンボルは、いずれも信号を伝送する際の時間単位を表す。無線フレーム、サブフレーム、スロット、ミニスロット及びシンボルは、それぞれに対応する別の呼称が用いられてもよい。
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.
例えば、1サブフレームは送信時間間隔(TTI:Transmission Time Interval)と呼ばれてもよいし、複数の連続したサブフレームがTTIと呼ばれてよいし、1スロット又は1ミニスロットがTTIと呼ばれてもよい。つまり、サブフレーム及びTTIの少なくとも一方は、既存のLTEにおけるサブフレーム(1ms)であってもよいし、1msより短い期間(例えば、1-13シンボル)であってもよいし、1msより長い期間であってもよい。なお、TTIを表す単位は、サブフレームではなくスロット、ミニスロットなどと呼ばれてもよい。
For example, 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. 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. It may be. The unit representing TTI may be called a slot, a mini slot, or the like instead of a subframe.
ここで、TTIは、例えば、無線通信におけるスケジューリングの最小時間単位のことをいう。例えば、LTEシステムでは、基地局が各端末20に対して、無線リソース(各端末20において使用することが可能な周波数帯域幅、送信電力など)を、TTI単位で割り当てるスケジューリングを行う。なお、TTIの定義はこれに限られない。
Here, TTI refers to, for example, the minimum time unit of scheduling in wireless communication. For example, in the LTE system, 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は、チャネル符号化されたデータパケット(トランスポートブロック)、コードブロック、コードワードなどの送信時間単位であってもよいし、スケジューリング、リンクアダプテーションなどの処理単位となってもよい。なお、TTIが与えられたとき、実際にトランスポートブロック、コードブロック、コードワードなどがマッピングされる時間区間(例えば、シンボル数)は、当該TTIよりも短くてもよい。
The 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. When a TTI is given, the time interval (for example, the number of symbols) to which the transport block, code block, code word, etc. are actually mapped may be shorter than the TTI.
なお、1スロット又は1ミニスロットがTTIと呼ばれる場合、1以上のTTI(すなわち、1以上のスロット又は1以上のミニスロット)が、スケジューリングの最小時間単位となってもよい。また、当該スケジューリングの最小時間単位を構成するスロット数(ミニスロット数)は制御されてもよい。
When one slot or one minislot is called TTI, one or more TTIs (that is, one or more slots or one or more minislots) 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.
1msの時間長を有するTTIは、通常TTI(LTE Rel.8-12におけるTTI)、ノーマルTTI、ロングTTI、通常サブフレーム、ノーマルサブフレーム、ロングサブフレーム、スロットなどと呼ばれてもよい。通常TTIより短いTTIは、短縮TTI、ショートTTI、部分TTI(partial又はfractional TTI)、短縮サブフレーム、ショートサブフレーム、ミニスロット、サブスロット、スロットなどと呼ばれてもよい。
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. TTIs shorter than normal TTIs may be referred to as shortened TTIs, short TTIs, partial TTIs (partial or fractional TTIs), shortened subframes, short subframes, minislots, subslots, slots, and the like.
なお、ロングTTI(例えば、通常TTI、サブフレームなど)は、1msを超える時間長を有するTTIで読み替えてもよいし、ショートTTI(例えば、短縮TTIなど)は、ロングTTIのTTI長未満かつ1ms以上のTTI長を有するTTIで読み替えてもよい。
The long TTI (for example, normal TTI, subframe, etc.) may be read as a TTI having a time length of more than 1 ms, and the short TTI (for example, shortened TTI, etc.) is less than the TTI length of the long TTI and 1 ms. It may be read as a TTI having the above TTI length.
リソースブロック(RB)は、時間領域及び周波数領域のリソース割当単位であり、周波数領域において、1つ又は複数個の連続した副搬送波(subcarrier)を含んでもよい。RBに含まれるサブキャリアの数は、ニューメロロジに関わらず同じであってもよく、例えば12であってもよい。RBに含まれるサブキャリアの数は、ニューメロロジに基づいて決定されてもよい。
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.
また、RBの時間領域は、1つ又は複数個のシンボルを含んでもよく、1スロット、1ミニスロット、1サブフレーム、又は1TTIの長さであってもよい。1TTI、1サブフレームなどは、それぞれ1つ又は複数のリソースブロックで構成されてもよい。
Further, the time domain of 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.
なお、1つ又は複数のRBは、物理リソースブロック(PRB:Physical RB)、サブキャリアグループ(SCG:Sub-Carrier Group)、リソースエレメントグループ(REG:Resource Element Group)、PRBペア、RBペアなどと呼ばれてもよい。
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.
また、リソースブロックは、1つ又は複数のリソースエレメント(RE:Resource Element)によって構成されてもよい。例えば、1REは、1サブキャリア及び1シンボルの無線リソース領域であってもよい。
Further, the resource block may be composed of one or a plurality of resource elements (RE: Resource Element). For example, 1RE may be a radio resource area of 1 subcarrier and 1 symbol.
帯域幅部分(BWP:Bandwidth Part)(部分帯域幅などと呼ばれてもよい)は、あるキャリアにおいて、あるニューメロロジ用の連続する共通RB(common resource blocks)のサブセットのことを表してもよい。ここで、共通RBは、当該キャリアの共通参照ポイントを基準としたRBのインデックスによって特定されてもよい。PRBは、あるBWPで定義され、当該BWP内で番号付けされてもよい。
Bandwidth part (BWP: 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. Here, the common RB may be specified by the index of the RB with respect to the common reference point of the carrier. PRBs may be defined in a BWP and numbered within that BWP.
BWPには、UL用のBWP(UL BWP)と、DL用のBWP(DL BWP)とが含まれてもよい。UEに対して、1キャリア内に1つ又は複数のBWPが設定されてもよい。
The BWP may include a BWP for UL (UL BWP) and a BWP for DL (DL BWP). One or more BWPs may be set in one carrier for the UE.
設定されたBWPの少なくとも1つがアクティブであってもよく、UEは、アクティブなBWPの外で所定の信号/チャネルを送受信することを想定しなくてもよい。なお、本開示における「セル」、「キャリア」などは、「BWP」で読み替えられてもよい。
At least one of the configured BWPs may be active, and the UE may not expect to send or receive a given signal / channel outside the active BWP. In addition, "cell", "carrier" and the like in this disclosure may be read as "BWP".
上述した無線フレーム、サブフレーム、スロット、ミニスロット及びシンボルなどの構造は例示に過ぎない。例えば、無線フレームに含まれるサブフレームの数、サブフレーム又は無線フレームあたりのスロットの数、スロット内に含まれるミニスロットの数、スロット又はミニスロットに含まれるシンボル及びRBの数、RBに含まれるサブキャリアの数、並びにTTI内のシンボル数、シンボル長、サイクリックプレフィックス(CP:Cyclic Prefix)長などの構成は、様々に変更することができる。
The above-mentioned structures such as wireless frames, subframes, slots, mini slots and symbols are merely examples. For example, the number of subframes contained in a wireless frame, the number of slots per subframe or wireless frame, the number of minislots contained within a slot, the number of symbols and RBs contained in a slot or minislot, included in the RB. The number of subcarriers, the number of symbols in the TTI, the symbol length, the cyclic prefix (CP) length, and the like can be changed in various ways.
本開示において、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、本開示は、これらの冠詞の後に続く名詞が複数形であることを含んでもよい。
In the present disclosure, if articles are added by translation, for example, a, an and the in English, the disclosure may include that the nouns following these articles are plural.
本開示において、「AとBが異なる」という用語は、「AとBが互いに異なる」ことを意味してもよい。なお、当該用語は、「AとBがそれぞれCと異なる」ことを意味してもよい。「離れる」、「結合される」などの用語も、「異なる」と同様に解釈されてもよい。
In the present disclosure, 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".
本開示において説明した各態様/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。また、所定の情報の通知(例えば、「Xであること」の通知)は、明示的に行うものに限られず、暗黙的(例えば、当該所定の情報の通知を行わない)ことによって行われてもよい。
Each aspect / embodiment described in the present disclosure may be used alone, in combination, or switched with execution. Further, the notification of predetermined information (for example, the notification of "being X") is not limited to the explicit one, but is performed implicitly (for example, the notification of the predetermined information is not performed). May be good.
なお、本開示におけるSSBは、同期信号及び報知チャネルを含むブロックの一例である。ページング早期通知は、ページング機会をモニタリングするか否かを示す通知の一例である。
Note that the SSB in the present disclosure is an example of a block including a synchronization signal and a broadcast channel. Early paging notification is an example of a notification indicating whether to monitor paging opportunities.
以上、本開示について詳細に説明したが、当業者にとっては、本開示が本開示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。本開示は、請求の範囲の記載により定まる本開示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、本開示の記載は、例示説明を目的とするものであり、本開示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 disclosure has been described in detail above, it is clear to those skilled in the art that the present disclosure is not limited to the embodiments described in the present disclosure. The present disclosure may be implemented as an amendment or modification mode without departing from the purpose and scope of the present disclosure, which is determined by the description of the scope of claims. Therefore, the description of the present disclosure is for the purpose of exemplary explanation and does not have any limiting meaning to the present disclosure.
10 基地局
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 10Base station 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
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
Claims (6)
- 同期信号及び報知チャネルを含むブロックを受信する受信部と、
前記ブロックに基づいて同期を行う制御部とを有し、
前記制御部は、前記ブロックを受信する第1の動作と、前記第1の動作よりも電力消費が少ない前記ブロックを受信する第2の動作とを切り替える端末。 A receiver that receives a block containing a synchronization signal and a broadcast channel,
It has a control unit that synchronizes based on the block.
The control unit is a terminal that switches between a first operation of receiving the block and a second operation of receiving the block, which consumes less power than the first operation. - 前記制御部は、前記第1の動作において、同期が完了するまで前記ブロックを1以上の回数受信し、前記第2の動作において、ページング機会に最も近い前記ブロックを予め定められた回数受信する請求項1記載の端末。 In the first operation, the control unit receives the block one or more times until synchronization is completed, and in the second operation, the control unit receives the block closest to the paging opportunity a predetermined number of times. Item 1. The terminal according to item 1.
- 前記制御部は、受信環境を示す指標が閾値を上回った場合、前記第1の動作から前記第2の動作に切り替える請求項2記載の端末。 The terminal according to claim 2, wherein the control unit switches from the first operation to the second operation when the index indicating the reception environment exceeds the threshold value.
- 前記制御部は、受信環境を示す指標が閾値を下回った場合、前記第2の動作から前記第1の動作に切り替える請求項2記載の端末。 The terminal according to claim 2, wherein the control unit switches from the second operation to the first operation when the index indicating the reception environment falls below the threshold value.
- 前記制御部は、前記ブロックを受信したとき第1のタイマを起動し、ページング機会1周期あたりの同期に必要であった前記ブロックの数が変化しないまま前記第1のタイマが満了した場合、前記第1の動作から前記第2の動作に切り替え、前記第2の動作に切り替えたとき、第2のタイマを起動し、前記第2のタイマが満了した場合、前記第2の動作から前記第1の動作に切り替える請求項2記載の端末。 The control unit activates the first timer when the block is received, and when the first timer expires without changing the number of the blocks required for synchronization per paging opportunity cycle, the control unit may perform the first timer. When the first operation is switched to the second operation and the second operation is switched to, the second timer is activated, and when the second timer expires, the first operation is started from the second operation. 2. The terminal according to claim 2, which switches to the operation of.
- 同期信号及び報知チャネルを含むブロックを受信する受信手順と、
前記ブロックに基づいて同期を行う制御手順とを有し、
前記ブロックを受信する第1の動作と、前記第1の動作よりも電力消費が少ない前記ブロックを受信する第2の動作とを切り替える手順を端末が実行する通信方法。 A receiving procedure for receiving a block containing a sync signal and a broadcast channel,
It has a control procedure for synchronizing based on the block.
A communication method in which a terminal executes a procedure of switching between a first operation of receiving the block and a second operation of receiving the block, which consumes less power than the first operation.
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CMCC: "Discussion on paging enhancement", 3GPP DRAFT; R1-2008021, 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 , XP051945314 * |
QUALCOMM INCORPORATED: "TRS/CSI-RS for idle/inactive UE power saving", 3GPP DRAFT; R1-2009267, 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, 24 October 2020 (2020-10-24), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051946930 * |
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