WO2019026158A1 - ユーザ端末及び無線通信方法 - Google Patents
ユーザ端末及び無線通信方法 Download PDFInfo
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- WO2019026158A1 WO2019026158A1 PCT/JP2017/027773 JP2017027773W WO2019026158A1 WO 2019026158 A1 WO2019026158 A1 WO 2019026158A1 JP 2017027773 W JP2017027773 W JP 2017027773W WO 2019026158 A1 WO2019026158 A1 WO 2019026158A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0078—Timing of allocation
- H04L5/0082—Timing of allocation at predetermined intervals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
Definitions
- LTE successor system for example, FRA (Future Radio Access), 5G (5th generation mobile communication system), 5G + (plus), NR (New Radio), NX (New radio access), FX (Future generation radio access), LTE Also referred to as Rel. 14 or 15).
- a radio base station controls allocation (scheduling) of data to a user terminal (UE: User Equipment), and uses downlink control information (DCI) to transmit data.
- DCI downlink control information
- UE User Equipment
- UE User Equipment
- a scheduling instruction For example, when a UE compliant with the existing LTE (for example, LTE Rel. 8-13) receives DCI (also referred to as a UL grant) instructing UL transmission, the sub after a predetermined period (for example, after 4 ms) In the frame, transmit UL data.
- LTE for example, LTE Rel. 8-13
- this invention makes it an object to provide the user terminal and radio
- resources used for UL grant free transmission are configured by upper layer signaling, such as UL semi-persistent scheduling (SPS) used in existing LTE (for example, LTE Rel. 8-13). Is being considered.
- SPS semi-persistent scheduling
- the first UL grant free transmission resource to which a predetermined period is applied is determined based on offset information included in physical layer signaling for notifying activation of UL grant free transmission. According to this configuration, it is possible to flexibly instruct UL grant free transmission, and the UE side can appropriately determine the start timing (resource for UL grant free) that enables transmission.
- the time offset is indicated in symbol units, and the predetermined timing is set as the reception timing of physical layer signaling (see FIG. 3).
- the time offset information is used to notify the UE of the number of symbols from the reception timing (for example, received symbols) of physical layer signaling to the start symbol of the UL GF resource to which a predetermined cycle is applied.
- prescribed timing can be defined by the symbol length defined by the subcarrier space
- the symbol for determining the predetermined timing may be defined by a symbol length defined by a subcarrier interval used for receiving the physical layer signaling.
- the reference timing may be set after the notification timing of physical layer signaling. In this case, since the period from the reference timing to the UL GF resource becomes short, it is possible to reduce the amount of information required for offset information notification.
- Aspect 4 is preferably applicable to the case where the period (offset) from the predetermined reference timing to the start timing of the UL GF resource initially set is long.
- the predetermined reference timing and the start timing of the UL GF resource are different slots (for example, slots separated by a predetermined number or more)
- the amount of information necessary for notifying the time offset by applying the mode 4 Can be reduced.
- physical layer signaling is transmitted / received at different timings between user terminals that set the same UL GF resource timing and / or period by using reference timing instead of physical layer signaling notification timing. Since the offset value indicated by physical layer signaling can be made a common value, scheduling control can be facilitated.
- the UE can appropriately start the UL GF resource start timing (the UL GF resource to be initially set) by notifying the UE of offset information included in at least physical layer signaling that activates UL grant free transmission. It can be judged.
- the UL GF resource can be flexibly configured for each UE by semistatically notifying the cycle in which the UL GF resource is set by upper layer signaling and dynamically notifying the start position by physical layer signaling. it can.
- case 1 In the case of repeatedly transmitting UL data within the range of each predetermined cycle (P) (case 1) and repeatedly transmitting UL data using UL grant free transmission resources set for each predetermined cycle.
- Case 2 There is a case (Case 2). That is, in case 1, transmission is repeatedly performed at a predetermined cycle, and in case 2, transmission is repeatedly performed once over a plurality of cycles (for example, K ⁇ P).
- case 1 and the case 2 will be described in detail below.
- multiple UL GF resources are configured in the same domain (for example, the same frequency domain) It may be set to different frequency regions. Information on the region (for example, frequency region) of UL GF resources may be notified to the UE using higher layer signaling or the like.
- FIG. 5A shows the case of using repeated time units (e.g., symbols) for continuous transmission
- the present invention is not limited to this.
- UL GF resources may be set in the non-consecutive time domain and repetitive transmission may be performed (see FIG. 5B).
- the non-continuous time domain may be configured to be set for each predetermined cycle.
- the UL GF resources set for each predetermined period (P) may be the same (for example, the same frequency domain) or may be different.
- the setting method of each UL GF resource can be performed in the same manner as in the case 1 above.
- the resource can be efficiently used for repeated transmission when the delay condition is relatively loose. High reliability communication can be realized.
- the user terminal 20 can be connected to both the radio base station 11 and the radio base station 12. It is assumed that the user terminal 20 simultaneously uses the macro cell C1 and the small cell C2 using CA or DC. Also, the user terminal 20 may apply CA or DC using a plurality of cells (CCs) (for example, 5 or less CCs, 6 or more CCs).
- CCs cells
- Communication can be performed between the user terminal 20 and the radio base station 11 using a relatively low frequency band (for example, 2 GHz) and a narrow bandwidth carrier (also called an existing carrier, legacy carrier, etc.).
- a carrier having a wide bandwidth in a relatively high frequency band for example, 3.5 GHz, 5 GHz, etc.
- the configuration of the frequency band used by each wireless base station is not limited to this.
- Each user terminal 20 is a terminal compatible with various communication schemes such as LTE and LTE-A, and may include not only mobile communication terminals (mobile stations) but also fixed communication terminals (fixed stations).
- OFDMA is a multicarrier transmission scheme in which a frequency band is divided into a plurality of narrow frequency bands (subcarriers) and data is mapped to each subcarrier to perform communication.
- SC-FDMA is a single carrier transmission that reduces interference between terminals by dividing the system bandwidth into a band configured by one or continuous resource blocks for each terminal, and a plurality of terminals use different bands. It is a system.
- the uplink and downlink radio access schemes are not limited to these combinations, and other radio access schemes may be used.
- a downlink shared channel (PDSCH: Physical Downlink Shared Channel) shared by each user terminal 20, a broadcast channel (PBCH: Physical Broadcast Channel), a downlink L1 / L2 control channel, etc. are used as downlink channels. Used. User data, upper layer control information, SIB (System Information Block), etc. are transmitted by the PDSCH. Also, a MIB (Master Information Block) is transmitted by the PBCH.
- PDSCH Physical Downlink Shared Channel
- PBCH Physical Broadcast Channel
- SIB System Information Block
- MIB Master Information Block
- the downlink L1 / L2 control channel includes PDCCH (Physical Downlink Control Channel), EPDCCH (Enhanced Physical Downlink Control Channel), PCFICH (Physical Control Format Indicator Channel), PHICH (Physical Hybrid-ARQ Indicator Channel) and the like.
- Downlink control information (DCI) including scheduling information of PDSCH and / or PUSCH is transmitted by PDCCH.
- an uplink shared channel (PUSCH: Physical Uplink Shared Channel) shared by each user terminal 20, an uplink control channel (PUCCH: Physical Uplink Control Channel), a random access channel (PRACH: Physical Random Access Channel) or the like is used.
- User data, upper layer control information, etc. are transmitted by PUSCH.
- downlink radio quality information (CQI: Channel Quality Indicator), delivery confirmation information, scheduling request (SR: Scheduling Request) and the like are transmitted by the PUCCH.
- the PRACH transmits a random access preamble for establishing a connection with a cell.
- FIG. 8 is a diagram showing an example of the entire configuration of a radio base station according to an embodiment of the present invention.
- the radio base station 10 includes a plurality of transmitting and receiving antennas 101, an amplifier unit 102, a transmitting and receiving unit 103, a baseband signal processing unit 104, a call processing unit 105, and a transmission path interface 106.
- each of the transmitting and receiving antenna 101, the amplifier unit 102, and the transmitting and receiving unit 103 may be configured to include one or more.
- the baseband signal processing unit 104 performs packet data convergence protocol (PDCP) layer processing, user data division / combination, RLC layer transmission processing such as RLC (Radio Link Control) retransmission control, and MAC (Medium Access) for user data.
- Control Transmission processing such as retransmission control (for example, HARQ transmission processing), scheduling, transmission format selection, channel coding, inverse fast Fourier transform (IFFT) processing, precoding processing, etc. It is transferred to 103. Further, transmission processing such as channel coding and inverse fast Fourier transform is also performed on the downlink control signal and transferred to the transmission / reception unit 103.
- the baseband signal processing unit 104 at least includes a control unit (scheduler) 301, a transmission signal generation unit 302, a mapping unit 303, a reception signal processing unit 304, and a measurement unit 305. Note that these configurations may be included in the wireless base station 10, and some or all of the configurations may not be included in the baseband signal processing unit 104.
- the control unit 301 schedules (for example, resources) system information, downlink data signals (for example, signals transmitted on PDSCH), downlink control signals (for example, signals transmitted on PDCCH and / or EPDCCH, delivery confirmation information, etc.) Control allocation). Further, the control unit 301 controls generation of the downlink control signal, the downlink data signal, and the like based on the result of determining whether the retransmission control for the uplink data signal is necessary or not. The control unit 301 also controls scheduling of synchronization signals (for example, PSS (Primary Synchronization Signal) / SSS (Secondary Synchronization Signal), downlink reference signals (for example, CRS, CSI-RS, DMRS) and the like.
- PSS Primary Synchronization Signal
- SSS Synchronization Signal
- the reception signal processing unit 304 performs reception processing (for example, demapping, demodulation, decoding, and the like) on the reception signal input from the transmission / reception unit 103.
- the reception signal is, for example, an uplink signal (uplink control signal, uplink data signal, uplink reference signal, etc.) transmitted from the user terminal 20.
- the received signal processing unit 304 can be configured from a signal processor, a signal processing circuit or a signal processing device described based on the common recognition in the technical field according to the present invention.
- the measurement unit 305 performs measurement on the received signal.
- the measuring unit 305 can be configured from a measuring device, a measuring circuit or a measuring device described based on the common recognition in the technical field according to the present invention.
- the measurement unit 305 may perform Radio Resource Management (RRM) measurement, Channel State Information (CSI) measurement, and the like based on the received signal.
- the measurement unit 305 may use received power (for example, reference signal received power (RSRP)), received quality (for example, reference signal received quality (RSRQ), signal to interference plus noise ratio (SINR), signal to noise ratio (SNR)). , Signal strength (e.g., received signal strength indicator (RSSI)), channel information (e.g., CSI), and the like.
- RSRP reference signal received power
- RSSI received signal strength indicator
- CSI channel information
- the measurement result may be output to the control unit 301.
- the reception signal processing unit 404 outputs the information decoded by the reception process to the control unit 401.
- the received signal processing unit 404 outputs, for example, broadcast information, system information, RRC signaling, DCI, and the like to the control unit 401. Further, the reception signal processing unit 404 outputs the reception signal and / or the signal after reception processing to the measurement unit 405.
- the measurement unit 405 performs measurement on the received signal.
- the measuring unit 405 can be configured of a measuring device, a measuring circuit or a measuring device described based on the common recognition in the technical field according to the present invention.
- the term “device” can be read as a circuit, a device, a unit, or the like.
- the hardware configuration of the radio base station 10 and the user terminal 20 may be configured to include one or more of the devices illustrated in the figure, or may be configured without including some devices.
- Each function in the radio base station 10 and the user terminal 20 is calculated by causing the processor 1001 to read predetermined software (program) on hardware such as the processor 1001 and the memory 1002, and the communication device 1004 is performed. This is realized by controlling communication, and controlling reading and / or writing of data in the memory 1002 and the storage 1003.
- the storage 1003 is a computer readable recording medium, and for example, a flexible disk, a floppy (registered trademark) disk, a magneto-optical disk (for example, a compact disk (CD-ROM (Compact Disc ROM), etc.), a digital versatile disk, Blu-ray® disc), removable disc, hard disc drive, smart card, flash memory device (eg card, stick, key drive), magnetic stripe, database, server, at least one other suitable storage medium May be configured by The storage 1003 may be called an auxiliary storage device.
- a computer readable recording medium for example, a flexible disk, a floppy (registered trademark) disk, a magneto-optical disk (for example, a compact disk (CD-ROM (Compact Disc ROM), etc.), a digital versatile disk, Blu-ray® disc), removable disc, hard disc drive, smart card, flash memory device (eg card, stick, key drive), magnetic stripe, database, server, at least one other suitable storage medium May be configured by
- the input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, and the like) that receives an input from the outside.
- the output device 1006 is an output device (for example, a display, a speaker, a light emitting diode (LED) lamp, and the like) that performs output to the outside.
- the input device 1005 and the output device 1006 may be integrated (for example, a touch panel).
- TTI refers to, for example, the minimum time unit of scheduling in wireless communication.
- the radio base station performs scheduling to assign radio resources (frequency bandwidth usable in each user terminal, transmission power, etc.) to each user terminal in TTI units.
- radio resources frequency bandwidth usable in each user terminal, transmission power, etc.
- 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, or the like.
- a TTI shorter than a normal TTI may be referred to as a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a minislot, a subslot, or the like.
- the information, parameters, etc. described in the present specification may be expressed using absolute values, may be expressed using relative values from predetermined values, or other corresponding information. May be represented.
- radio resources may be indicated by a predetermined index.
- the physical layer signaling may be called L1 / L2 (Layer 1 / Layer 2) control information (L1 / L2 control signal), L1 control information (L1 control signal), or the like.
- RRC signaling may be referred to as an RRC message, and may be, for example, an RRC connection setup (RRC Connection Setup) message, an RRC connection reconfiguration (RRC Connection Reconfiguration) message, or the like.
- MAC signaling may be notified using, for example, a MAC control element (MAC CE (Control Element)).
- Each aspect / embodiment described in the present specification includes LTE (Long Term Evolution), LTE-A (LTE-Advanced), LTE-B (LTE-Beyond), SUPER 3G, IMT-Advanced, 4G (4th generation mobile) Communication system), 5G (5th generation mobile communication system), FRA (Future Radio Access), New-RAT (Radio Access Technology), NR (New Radio), NX (New radio access), FX (Future generation radio access), GSM (registered trademark) (Global System for Mobile communications), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802 .20, UWB (Ultra-Wide Band), Bluetooth (registered trademark) And / or systems based on other suitable wireless communication methods and / or extended next generation systems based on these.
- LTE Long Term Evolution
- LTE-A Long Term Evolution-Advanced
- determining may encompass a wide variety of operations. For example, “determination” may be calculating, computing, processing, deriving, investigating, looking up (eg, table, database or other data) A search on structure), ascertaining, etc. may be considered as “determining”. Also, “determination” may be receiving (e.g. receiving information), transmitting (e.g. transmitting information), input (input), output (output), access (access) It may be considered as “determining” (eg, accessing data in memory) and the like. Also, “determination” is considered to be “determination” to resolve, select, choose, choose, establish, compare, etc. It is also good. That is, “determination” may be considered as “determining” some action.
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Abstract
Description
第1の態様では、物理レイヤシグナリングに含まれるオフセット情報に基づいてULグラントフリー(UL GF)送信が可能となる開始タイミング(例えば、所定周期を適用するULグラントフリー送信用リソース)を判断する場合について説明する。
物理レイヤシグナリングで通知する時間オフセット情報は、所定タイミングから最初に利用可能となるUL GFリソース(例えば、所定周期(P)を適用するUL GFリソースのうち最初に設定されるUL GFリソース)までの間隔を通知する情報であればよい。所定タイミングは、物理レイヤシグナリングの受信タイミングとしてもよいし、基準となる所定基準タイミングとしてもよい。以下に、時間オフセット情報と所定タイミングに適用可能な構成(態様1-4)を説明する。なお、以下の態様1-4のいずれを利用するか予め仕様で定めてもよいし、基地局からUEに適用する態様を通知してもよい。
態様1では、時間オフセットをシンボル単位で示し、所定タイミングを物理レイヤシグナリングの受信タイミングとする(図3参照)。この場合、時間オフセット情報を用いて、物理レイヤシグナリングの受信タイミング(例えば、受信シンボル)から所定周期が適用されるUL GF用リソースの開始シンボルまでの間のシンボル数をUEに通知する。なお、当該所定タイミングを決定するための当該シンボルは、UL GF送信を行う際に用いるサブキャリア間隔で定められるシンボル長で定義することができる。あるいは、当該所定タイミングを決定するための当該シンボルは、前記物理レイヤシグナリングの受信に用いるサブキャリア間隔で定められるシンボル長で定義してもよい。
態様2では、時間オフセットをシンボルとスロットの組み合わせで示し、所定タイミングを物理レイヤシグナリングの受信タイミングとする(図3参照)。この場合、時間オフセット情報を用いて、物理レイヤシグナリングの受信タイミング(例えば、受信シンボル)から所定周期が適用されるUL GF用リソースの開始シンボルまでの間のスロット数+シンボル数をUEに通知する。なお、当該所定タイミングを決定するための当該シンボル及びスロットは、UL GF送信を行う際に用いるサブキャリア間隔で定められるシンボル長並びにこのシンボル長で定められるスロットで定義することができる。あるいは、当該所定タイミングを決定するための当該シンボル及びスロットは、前記物理レイヤシグナリングの受信に用いるサブキャリア間隔で定められるシンボル長並びにこのシンボル長で定められるスロットで定義してもよい。
態様3では、時間オフセットをシンボル単位で示し、所定タイミングを所定の基準タイミングとする(図4参照)。この場合、時間オフセット情報を用いて、所定の基準タイミングから所定周期が適用されるUL GF用リソースの開始シンボルまでの間のシンボル数をUEに通知する。
態様4では、時間オフセットをシンボルとスロットの組み合わせで示し、所定タイミングを所定の基準タイミングとする(図4参照)。この場合、時間オフセット情報を用いて、所定の基準タイミングから所定周期が適用されるUL GF用リソースの開始シンボルまでの間のスロット数+シンボル数をUEに通知する。
上述したように、ULグラントフリー送信では、ULデータの繰り返し送信を行うことも考えられる。ULデータの繰り返し送信では、UEが、トランスポートブロック(TB:Transport Block)単位でULデータを所定数(例えば、K)繰り返し送信する。ULグラントフリー送信(又は、UL GFリソース)が所定周期で設定される場合に、ULグラントフリー送信を適用するULデータの繰り返し送信をどのように設定するかが問題となる。そこで、第2の態様では、所定周期毎に設定されるUL GFリソースを利用して繰り返し送信を行う場合について説明する。
図5Aは、各所定周期(P)の範囲内で繰り返し送信を行う場合の一例を示している。図5Aは、所定周期毎に連続して設定される複数のUL GFリソースを利用して繰り返し送信を行う。繰り返し送信を適用する回数(K)は、上位レイヤシグナリング等を利用して予め基地局からUEに通知すればよい。
図5Aでは、繰り返し送信を連続する時間単位(例えば、シンボル)を利用する場合を示したが、これに限られない。例えば、所定周期(P)の範囲において、非連続の時間領域にUL GFリソースを設定して繰り返し送信を行ってもよい(図5B参照)。非連続の時間領域は、所定周期毎に設定される構成としてもよい。
図6は、所定周期(P)毎にそれぞれ設定されるUL GFリソースを利用して繰り返し送信を行う場合の一例を示している。つまり、ケース2では、所定回数(K)だけ繰り返すULデータの繰り返し送信をK×Pの期間を利用して行う。
以下、本発明の一実施形態に係る無線通信システムの構成について説明する。この無線通信システムでは、本発明の上記各実施形態に係る無線通信方法のいずれか又はこれらの組み合わせを用いて通信が行われる。
図8は、本発明の一実施形態に係る無線基地局の全体構成の一例を示す図である。無線基地局10は、複数の送受信アンテナ101と、アンプ部102と、送受信部103と、ベースバンド信号処理部104と、呼処理部105と、伝送路インターフェース106と、を備えている。なお、送受信アンテナ101、アンプ部102、送受信部103は、それぞれ1つ以上を含むように構成されればよい。
図10は、本発明の一実施形態に係るユーザ端末の全体構成の一例を示す図である。ユーザ端末20は、複数の送受信アンテナ201と、アンプ部202と、送受信部203と、ベースバンド信号処理部204と、アプリケーション部205と、を備えている。なお、送受信アンテナ201、アンプ部202、送受信部203は、それぞれ1つ以上を含むように構成されればよい。
なお、上記実施形態の説明に用いたブロック図は、機能単位のブロックを示している。これらの機能ブロック(構成部)は、ハードウェア及び/又はソフトウェアの任意の組み合わせによって実現される。また、各機能ブロックの実現方法は特に限定されない。すなわち、各機能ブロックは、物理的及び/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、物理的及び/又は論理的に分離した2つ以上の装置を直接的及び/又は間接的に(例えば、有線及び/又は無線を用いて)接続し、これら複数の装置を用いて実現されてもよい。
なお、本明細書において説明した用語及び/又は本明細書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/又はシンボルは信号(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。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)、パイロット信号などと呼ばれてもよい。また、コンポーネントキャリア(CC:Component Carrier)は、セル、周波数キャリア、キャリア周波数などと呼ばれてもよい。
Claims (6)
- 無線基地局からのUL送信指示なしにULデータを送信するULグラントフリー送信を行う送信部と、
上位レイヤシグナリングで通知されるULグラントフリー送信用のリソース周期と、ULグラントフリー送信のアクティブ化を通知する物理レイヤシグナリングとに基づいて前記ULグラントフリー送信を制御する制御部と、を有し、
前記制御部は、前記物理レイヤシグナリングに含まれるオフセット情報に基づいて、所定周期を適用するULグラントフリー送信用リソースの開始位置を判断することを特徴とするユーザ端末。 - 前記オフセット情報は、前記物理レイヤシグナリングと、前記所定周期を適用するULグラントフリー送信用リソースの先頭リソースとの間のオフセットを示す情報であることを特徴とする請求項1に記載のユーザ端末。
- 前記オフセット情報は、所定基準タイミングと、前記所定周期を適用する最初のULグラントフリー送信用リソースの先頭リソースとの間のオフセットを示す情報であることを特徴とする請求項1に記載のユーザ端末。
- 前記ULデータの繰り返し送信に利用する1又は複数のULグラントフリー送信用のリソースに関する情報を受信する受信部を有し、
前記制御部は、前記ULデータの繰り返し送信を前記所定周期の範囲内で行うように制御することを特徴とする請求項1から請求項3のいずれかに記載のユーザ端末。 - 前記ULデータの繰り返し送信に利用する1又は複数のULグラントフリー送信用のリソースに関する情報を受信する受信部を有し、
前記制御部は、前記所定周期毎に設定されるULグラントフリー送信用リソースを利用して前記ULデータの繰り返し送信を制御することを特徴とする請求項1から請求項3のいずれかに記載のユーザ端末。 - ユーザ端末の無線通信方法であって、
無線基地局からのUL送信指示なしにULデータを送信するULグラントフリー送信を行う工程と、
上位レイヤシグナリングで通知されるULグラントフリー送信用のリソース周期と、ULグラントフリー送信のアクティブ化を通知する物理レイヤシグナリングとに基づいて前記ULグラントフリー送信を制御する工程と、を有し、
前記物理レイヤシグナリングに含まれるオフセット情報に基づいて、所定周期を適用するULグラントフリー送信用リソースの開始位置を判断することを特徴とする無線通信方法。
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EP17920199.1A EP3664552B1 (en) | 2017-07-31 | 2017-07-31 | Terminal, radio communication method, base station and system |
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JP2019533762A JP7177060B2 (ja) | 2017-07-31 | 2017-07-31 | 端末、無線通信方法、基地局及びシステム |
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