WO2023119756A1 - 通信装置及び通信方法 - Google Patents
通信装置及び通信方法 Download PDFInfo
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- WO2023119756A1 WO2023119756A1 PCT/JP2022/034592 JP2022034592W WO2023119756A1 WO 2023119756 A1 WO2023119756 A1 WO 2023119756A1 JP 2022034592 W JP2022034592 W JP 2022034592W WO 2023119756 A1 WO2023119756 A1 WO 2023119756A1
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- transmission
- frequency hopping
- hopping
- interval
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/713—Spread spectrum techniques using frequency hopping
- H04B1/7143—Arrangements for generation of hop patterns
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
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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
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
- H04L5/0012—Hopping in multicarrier systems
-
- 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
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
- H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0204—Channel estimation of multiple channels
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0222—Estimation of channel variability, e.g. coherence bandwidth, coherence time, fading frequency
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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
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
-
- 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
- H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
-
- 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
- H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
- H04L5/0057—Physical resource allocation for CQI
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Definitions
- the present disclosure relates to communication devices and communication methods.
- 5th Generation mobile communication systems offer high capacity and ultra high speed (eMBB: enhanced Mobile Broadband), massive Machine Type Communication (mMTC), and ultra high reliability and low speed. It has the characteristics of delay (URLLC: Ultra Reliable and Low Latency Communication), and these characteristics can be used to flexibly provide wireless communication according to a wide variety of needs.
- the 3rd Generation Partnership Project (3GPP) an international standardization body, is working on the specification of New Radio (NR) as one of the 5G radio interfaces.
- NR New Radio
- 3GPP TS38.104 V15.15.0 “NR Base Station (BS) radio transmission and reception (Release 15),” September 2021.
- 3GPP TS38.211 V16.7.0 “NR Physical channels and modulation (Release 16),” September 2021.
- 3GPP TS38.213 V16.7.0 “NR Physical layer procedures for control (Release 16),” September 2021.
- 3GPP TS38.214 V16.7.0 “NR Physical layer procedures for data (Release 16),” September 2021.
- 3GPP TS38.331 V16.6.0 “NR Radio Resource Control (RRC) protocol specification (Release 16)”, September 2021.
- RRC Radio Resource Control
- a non-limiting embodiment of the present disclosure contributes to providing a communication device and a communication method that can improve communication efficiency in uplink.
- a communication apparatus includes a control circuit for controlling frequency hopping in which transmission is performed at the same frequency position in a plurality of intervals based on a transmission interval set for repeated transmission of a signal; and a transmission circuit for transmitting a signal under the control of
- communication efficiency in uplink can be improved.
- NR for example, in addition to the frequency band below 6 GHz, which is mainly used for cellular communication, such as the 700 MHz to 3.5 GHz band (for example, also called Frequency Range 1 (FR1)), 28 GHz or 39 GHz that can secure a wide band A millimeter wave band (eg, also referred to as FR2), such as a band, can be exploited (see, eg, Non-Patent Document 1).
- FR1 a higher frequency band such as the 3.5 GHz band may be used compared to the frequency band used in Long Term Evolution (LTE) or 3G (3rd Generation mobile communication systems).
- LTE Long Term Evolution
- 3G 3rd Generation mobile communication systems
- Radio Access Technology Radio Access Technology
- a terminal eg, also called User Equipment (UE)
- UE User Equipment
- PDCCH Physical Downlink Control Channel
- gNB base station
- DCI Downlink Control Information
- RRC Radio Resource Control
- the terminal transmits an uplink data channel (eg, PUSCH: Physical Uplink Shared Channel) according to resource allocation (eg, Grant or UL grant) from the base station.
- Resource allocation information included in at least one of DCI and RRC may include, for example, information on time domain resources for transmitting PUSCH.
- information on time domain resources includes information on the timing from the slot in which the terminal receives PDCCH to the transmission of PUSCH (eg, K2), the position of the first symbol of PUSCH in the slot, or the number of symbols for transmitting PUSCH. may include information about
- the terminal sends a response signal (ACK/NACK: Acknowledgment/Negative Acknowledgment, or Hybrid Automatic Repeat Request (HARQ)-ACK) indicating success or failure of decoding to a downlink data channel (eg, PDSCH: Physical Downlink Shared Channel).
- a downlink data channel eg, PDSCH: Physical Downlink Shared Channel
- PUCCH Physical Uplink Control Channel
- uplink radio resource allocation request eg, SR: Scheduling Request
- downlink channel state information eg, CSI: Channel State Information
- ACK/NACK ACK/NACK
- CSI Channel State Information
- UCI Uplink Control Information
- the terminal when transmitting ACK/NACK for PDSCH allocated by DCI, the terminal may transmit PUCCH according to resource allocation indicated by DCI from the base station.
- Control information included in DCI may include, for example, information on PUCCH resources.
- the information on PUCCH resources may include information on the timing of transmitting PUCCH after how many slots from the slot in which the terminal received PDSCH. This timing information may be referred to as K1 or PDSCH-to-HARQ_feedback timing indication.
- NR Release 15 or NR Release 16 defines two PUSCH repetition methods for PUSCH repetition (see, for example, Non-Patent Document 6).
- the first PUSCH repetition method is slot-based repetition, and the same time resource allocation is applied over multiple consecutive slots.
- This PUSCH repetition method is hereinafter referred to as "PUSCH repetition Type A with continuous slot counting".
- the second PUSCH repetition method is Repetition that enables repeated transmission of one or more PUSCHs within one slot.
- This PUSCH repetition method is hereinafter referred to as "PUSCH repetition Type B".
- the base station may notify the terminal of the time domain resource and repetition count for the first (initial) PUSCH transmission.
- time domain resource allocation for the second and subsequent PUSCH transmissions for example, time domain resources corresponding to consecutive symbols and the same number of symbols as the previous PUSCH transmission may be allocated to PUSCH.
- the number of repetition slots may be, for example, a value counted based on continuous slots.
- NR Release 17 for example, denoted as "Rel.17”
- the number of repetition slots is counted based on the available uplink slots for PUSCH transmission.
- This PUSCH repetition method is hereinafter referred to as "PUSCH repetition Type A with available slot counting”.
- each of PUSCH repetition Type A with continuous slot counting and PUSCH repetition Type A with available slot counting may be simply referred to as PUSCH repetition Type A.
- a method of setting the number of repetition slots to a value counted based on the uplink slots (or sub-slots) that can be used for PUCCH transmission is defined (for example, non-patent See reference 5).
- a reference signal for example, DMRS: Demodulation Reference Signal
- a DMRS may be placed, for example, at the front of the slot.
- DMRSs may be arranged in multiple symbols within a slot, for example (see Non-Patent Documents 3 or 6, for example).
- DMRS settings in each slot (or subslot) or each repetition may be the same.
- the DMRS configuration may include information such as the number of DMRS symbols in a slot (or subslot) or each PUSCH occurrence, DMRS location, or DMRS type.
- a method of combining multiple slots or repetition DMRS for example, a channel estimation method over multiple intervals
- a method of combining multiple slots or repetition DMRSs is also called, for example, inter-slot channel estimation, joint channel estimation, or DMRS bundling.
- the configured TDW or nominal TDW
- actual TDW are introduced as time intervals (e.g., TDW: Time Domain Window) configured to support joint channel estimation (DMRS bundling). It is being considered (see, for example, Non-Patent Document 8).
- TDW Time Domain Window
- DMRS bundling joint channel estimation
- one or more contiguous or non-contiguous configured TDWs may be applied to PUSCH repetition or PUCCH repetition.
- a configured TDW may have, for example, the following features (1) to (5) (see, for example, Non-Patent Document 8).
- Each configured TDW is composed of one or more consecutive physical slots.
- the length of the configured TDW (hereinafter referred to as "interval length (L)") can be explicitly set to a single value.
- the interval length L of the configured TDW may be set by higher layer signals.
- the maximum value of the section length L of the configured TDW that can be supported by the terminal may be reported from the terminal to the base station as, for example, Capability of the terminal.
- the terminal may set the interval length L of the configured TDW to a default value.
- the default value of the interval length L of the configured TDW is, for example, the minimum value of the maximum value of the interval length L of the configured TDW that the terminal can support and the interval length for transmitting PUSCH repetition or PUCCH repetition. may be set.
- the start position of the first configured TDW is the slot corresponding to the first PUSCH transmission or PUCCH transmission of PUSCH repetition or PUCCH repetition.
- the configured TDW is determined based on available uplink slots for PUSCH or PUCCH transmission. For example, the starting position of other (second and subsequent) configured TDWs is the next available slot of the last available slot included in the previous configured TDW.
- the end position of the last configured TDW is the slot corresponding to the last PUSCH transmission or PUCCH transmission of PUSCH repetition or PUCCH repetition.
- FIGS. 1 and 2 are diagrams showing examples of configured TDW settings in Repetition transmission.
- the number of PUSCH repetitions or PUCCH repetitions is 8, and the section length L of the configured TDW is 4 slots.
- FIG. 1 shows a setting example of configured TDW in PUSCH repetition Type A with continuous slot counting
- FIG. 2 shows a setting example of configured TDW in PUSCH repetition Type A with available slot counting or PUCCH repetition.
- slots with slot numbers (slot index) #0 to #3 for example, also represented as slots #0 to #3; the same applies hereinafter
- slots with slot numbers #4 to #7 respectively is set to the configured TDW (eg cTDW#0 and cTDW#1).
- the terminal may perform PUSCH repetition in slots #0-#7.
- the base station performs channel estimation by DMRS bundling in units of cTDW#0 set in slots #0 to #3, and cTDW# set in slots #4 to #7.
- Channel estimation by DMRS bundling may be performed in units of 1.
- consecutive three slots of slot numbers #2 to #4 corresponding to uplink slots (UL), three slots of slot numbers #7 to #9, and slot numbers #12 and # Configured TDWs are set for each of the 13 two slots.
- the terminal may perform PUSCH repetition in slots #2-#4, #7-#9, #12 and #13.
- the base station performs channel estimation by DMRS bundling in units of cTDW#0 set in slots #2 to #4, and cTDW# set in slots #7 to #9.
- Channel estimation by DMRS bundling may be performed in units of 1, and channel estimation by DMRS bundling may be performed in units of cTDW#2 set in slots #12 and #13.
- one or more actual TDWs can be implicitly set within one configured TDW interval.
- the actual TDW may have, for example, the following features (see, for example, Non-Patent Document 8).
- the starting position of the first actual TDW is the slot corresponding to the first PUSCH transmission or PUCCH transmission within the interval of the configured TDW.
- the terminal After starting the actual TDW, the terminal maintains the transmission power consistency and phase continuity of the transmission signal until at least one of the following conditions (2-1) and (2-2) is satisfied. requested.
- the actual TDW ends when the following conditions are met.
- Events that break the consistency and phase continuity with respect to transmission power of a transmission signal include, for example, PUSCH transmission or PUCCH dropping or cancellation, downlink slot or downlink signal reception, and frequency hopping. Note that events that break the consistency and phase continuity with respect to the transmission power of the transmission signal are not limited to these events, and may be other events.
- DMRS bundling (or inter-slot channel estimation, joint channel estimation) is applicable to the actual TDW interval.
- the actual TDW and the configured TDW match when no event that breaks the transmission power coherence and phase continuity of the transmission signal occurs within the configured TDW interval.
- Frequency hopping Application of frequency hopping is also required as a technique for improving coverage.
- NR Rel.15/16 as an inter-slot frequency hopping technique in repetition transmission, there is a method of setting two resource block (RB) positions and switching the RB position for transmitting PUSCH or PUCCH signals for each slot. applied (see, for example, Non-Patent Documents 5 or 6).
- the terminal may determine the frequency position RBstart(ns) at which PUSCH is transmitted based on the physical slot number ns as shown in the following equation (1).
- the terminal transmits PUCCH based on the slot number n' in the PUCCH repetition transmission period (for example, the slot number relative to the PUCCH transmission period).
- the frequency position RB(n') may be determined as in Equation (2) below.
- FIG. 4 is a diagram showing an example of inter-slot frequency hopping in PUCCH repetition transmission.
- PUCCH repetition is set over eight slots with slot numbers (ns) #1 to #8.
- the RB position is hopped for each slot, so an event that breaks the consistency or phase continuity of the transmission power of the transmission signal occurs for each slot.
- frequency hopping e.g., consistency and phase continuity with respect to the transmission power of the transmission signal
- the introduction of frequency hopping (or frequency hopping pattern) that continuously transmits at the same frequency position (e.g., RB position) in a certain interval (e.g., between multiple slots) is expected .
- a certain period during which transmission is performed at the same RB position is called a “hopping period or hopping interval”.
- a terminal determines the hopping interval and the configured TDW in that order.
- a terminal for example, can be configured with a parameter related to the hopping interval and a parameter related to the interval length of the configured TDW.
- the terminal may set the hopping interval based on the notified parameter value (set value).
- the terminal may set the interval length of the configured TDW to the hopping interval.
- the hopping interval is set to a value similar to the interval length of the configured TDW, for example, if the frequency hopping pattern is determined based on the physical slot number like PUSCH repetition of NR Rel.15/16, the hopping interval and DMRS bundling may not align with the interval of the configured TDW in .
- the terminal may determine the frequency position RBstart(ns) for transmitting PUSCH based on the physical slot number ns as shown in the following equation (3).
- ns indicates the physical slot number in the radio frame
- RBstart indicates the leading RB position calculated by frequency resource allocation information included in at least one of DCI and RRC
- RBoffset is used for transmission in frequency hopping.
- NBWP size indicates the size of the BWP set in the terminal.
- NFH indicates the hopping interval length in frequency hopping.
- FIGS. 5 and 6 are diagrams showing examples of PUSCH repetition applying frequency hopping and DMRS bundling.
- the number of PUSCH repetitions is 8, and the hopping section length and configured TDW section length L are 4 slots.
- FIG. 5 shows an example of PUSCH repetition Type A with continuous slot counting
- FIG. 6 shows an example of PUSCH repetition Type A with available slot counting.
- a hopping section with a section length of 4 slots may be set in order from the slot with physical slot number #0.
- the hopping section and the configured TDW section in DMRS bundling are not aligned.
- DMRS bundling is performed in units of actual TDW intervals. Therefore, since DMRS bundling with a smaller number of slots than the number of slots set in the configured TDW is applied, the effect of improving channel estimation accuracy may be reduced.
- a non-limiting example of the present disclosure describes a method for improving channel estimation accuracy when frequency hopping and DMRS bundling are applied in repetition transmission.
- frequency hopping and DMRS bundling are applied to Repetition transmission, and when the hopping interval is set to the configured TDW interval length, the hopping interval and DMRS bundling Frequency hopping control may be performed so that the interval of the configured TDW in .
- a frequency hopping pattern eg, a pattern of RB locations used for transmission
- a communication system includes base station 100 and terminal 200 .
- FIG. 7 is a block diagram showing a configuration example of part of the base station 100 (corresponding to a communication device, for example) according to an embodiment of the present disclosure.
- a control unit for example, corresponding to a control circuit
- a receiving unit (for example, corresponding to a receiving circuit) receives a signal under control of frequency hopping.
- FIG. 8 is a block diagram showing a configuration example of part of the terminal 200 (corresponding to a communication device, for example) according to an embodiment of the present disclosure.
- a control unit e.g., corresponding to a control circuit
- Control frequency hopping e.g., DMRS bundling.
- a transmission unit (for example, corresponding to a transmission circuit) transmits a signal under control of frequency hopping.
- FIG. 9 is a block diagram showing a configuration example of base station 100 according to Embodiment 1.
- base station 100 includes control section 101, upper control signal generation section 102, downlink control information generation section 103, coding section 104, modulation section 105, signal allocation section 106, transmission section 107 , a receiving unit 108 , an extracting unit 109 , a demodulating unit 110 and a decoding unit 111 .
- control unit 101 For example, control unit 101, higher control signal generation unit 102, downlink control information generation unit 103, coding unit 104, modulation unit 105, signal allocation unit 106, extraction unit 109, demodulation unit 110, and decoding shown in FIG.
- At least one of the units 111 may be included in the control unit shown in FIG.
- the receiving unit 108 shown in FIG. 9 may be included in the receiving unit shown in FIG.
- the control section 101 determines information regarding transmission of an uplink data signal (for example, PUSCH) to the terminal 200 and outputs the determined information to the higher control signal generation section 102 . Also, the control unit 101 outputs the determined information to the extraction unit 109, the demodulation unit 110, and the decoding unit 111, for example.
- an uplink data signal for example, PUSCH
- Information on the transmission of uplink data signals for example, information on time domain resource allocation (e.g., information on Time Domain Resource Allocation (TDRA) table), or information on Repetition transmission (e.g., Repetition number) is included. good.
- the information on the transmission of the uplink data signal includes information on frequency domain resource allocation (e.g., information on Frequency Domain Resource Allocation (FDRA)), information on frequency hopping (e.g., hopping mode, hopping offset, hopping interval, or , information on whether to apply hopping).
- the information on transmission of uplink data signals may also include, for example, information on DMRS bundling (for example, information on whether to apply DMRS bundling, or the interval length of configured TDW).
- control unit 101 determines information on transmission of an uplink control signal (eg, PUCCH) to the terminal 200, and sends the determined information to at least one of the higher control signal generation unit 102 and the downlink control information generation unit 103. output to Also, the control unit 101 outputs the determined information to the extraction unit 109, the demodulation unit 110, and the decoding unit 111, for example.
- an uplink control signal eg, PUCCH
- Information on transmission of uplink control signals may include, for example, information on uplink control channel (eg, PUCCH) resources or information on repetition transmission (eg, number of repetitions).
- the information on transmission of the uplink control signal may also include, for example, information on frequency hopping (for example, information on hopping mode, hopping period, whether to apply hopping).
- the information on transmission of uplink control signals may also include, for example, information on DMRS bundling (for example, information on whether to apply DMRS bundling, or the interval length of configured TDW).
- control unit 101 for example, downlink data signal (eg, PDSCH), higher control signal, or information on the downlink signal for transmitting the downlink control information (eg, coding and modulation scheme (MCS: Modulation and Coding Scheme) and radio resource allocation), and outputs the determined information to encoding section 104, modulation section 105 and signal allocation section .
- control section 101 outputs, for example, information on downlink signals (for example, data signals or higher control signals) to the downlink control information generating section 103 .
- higher layer control signal generation section 102 generates a higher layer control signal bit string based on information input from control section 101 and outputs the higher layer control signal bit string to encoding section 104 .
- Downlink control information generation section 103 generates a downlink control information (for example, DCI) bit string based on information input from control section 101, for example, and outputs the generated DCI bit string to encoding section 104. Note that the control information may be transmitted to multiple terminals.
- DCI downlink control information
- the encoding unit 104 For example, based on information input from the control unit 101, the encoding unit 104 generates downlink data (eg, DL data signal), a bit string input from the higher control signal generation unit 102, or downlink control information.
- the DCI bit string input from section 103 is encoded.
- Encoding section 104 outputs the encoded bit string to modulation section 105 .
- Modulation section 105 modulates a coded bit string input from coding section 104 based on information input from control section 101, for example, and outputs a modulated signal (for example, a symbol string) to signal allocation section 106. Output to
- Signal allocation section 106 for example, based on the information indicating the radio resource input from control section 101, the symbol sequence input from modulation section 105 (for example, including a downlink data signal or control signal) to the radio resource. map.
- the signal allocation section 106 outputs the downlink signal to which the signal is mapped to the transmission section 107 .
- the transmission section 107 performs transmission waveform generation processing such as orthogonal frequency division multiplexing (OFDM) on the signal input from the signal allocation section 106, for example.
- OFDM orthogonal frequency division multiplexing
- the transmitting unit 107 performs inverse fast Fourier transform (IFFT) processing on the signal, and adds CP to the signal after IFFT. Append.
- IFFT inverse fast Fourier transform
- transmitting section 107 performs RF processing such as D/A conversion or up-conversion on the signal, and transmits the radio signal to terminal 200 via an antenna.
- the receiving section 108 performs RF processing such as down-conversion or A/D conversion on the uplink signal from the terminal 200 received via the antenna.
- receiving section 108 performs Fast Fourier Transform (FFT) processing on the received signal, and outputs the obtained frequency domain signal to extraction section 109 .
- FFT Fast Fourier Transform
- Extracting section 109 extracts an uplink data signal (eg, PUSCH) or an uplink control signal (eg, PUCCH) from the received signal input from receiving section 108, for example, based on information input from control section 101.
- the transmitted radio resource portion is extracted, and the extracted radio resource portion is output to demodulation section 110 .
- the demodulation section 110 demodulates the uplink data signal (eg, PUSCH) or uplink control signal (eg, PUCCH) input from the extraction section 109 based on information input from the control section 101, for example.
- Demodulation section 110 outputs the demodulation result to decoding section 111, for example.
- Decoding section 111 for example, based on the information input from control section 101 and the demodulation result input from demodulation section 110, uplink data signal (eg, PUSCH) or uplink control signal (eg, PUCCH). to obtain a decoded received bit sequence (for example, UL data signal or UCI).
- uplink data signal eg, PUSCH
- uplink control signal eg, PUCCH
- FIG. 10 is a block diagram showing a configuration example of terminal 200 according to an embodiment of the present disclosure.
- terminal 200 includes receiving section 201, extraction section 202, demodulation section 203, decoding section 204, control section 205, encoding section 206, modulation section 207, and signal allocation section 208. , and a transmission unit 209 .
- the extraction unit 202 may be included.
- the demodulation unit 203 may be included.
- the control unit 205 may be included.
- the coding unit 206 may be included in the transmitting section shown in FIG.
- the receiving unit 201 receives a downlink signal (for example, a downlink data signal or downlink control information) from the base station 100 via an antenna, and down-converts or A/D converts the received radio signal. RF processing is performed to obtain a received signal (baseband signal). Further, when receiving an OFDM signal, the receiving section 201 performs FFT processing on the received signal, and transforms the received signal into the frequency domain. Receiving section 201 outputs a received signal to extracting section 202 .
- a downlink signal for example, a downlink data signal or downlink control information
- RF processing is performed to obtain a received signal (baseband signal).
- the receiving section 201 performs FFT processing on the received signal, and transforms the received signal into the frequency domain.
- Receiving section 201 outputs a received signal to extracting section 202 .
- Extracting section 202 for example, based on the information about the radio resource of the downlink control information, which is input from control section 205, from the received signal input from receiving section 201, the radio resource portion that can contain the downlink control information is extracted and output to demodulation section 203 . Also, extraction section 202 extracts a radio resource portion including the downlink data signal based on information about the radio resource of the data signal input from control section 205 and outputs the radio resource portion to demodulation section 203 .
- Demodulation section 203 demodulates the signal (for example, PDCCH or PDSCH) input from extraction section 202 based on information input from control section 205 , and outputs the demodulation result to decoding section 204 .
- the signal for example, PDCCH or PDSCH
- Decoding section 204 performs error correction decoding of PDCCH or PDSCH using the demodulation result input from demodulation section 203 based on information input from control section 205, for example. A layer control signal or downlink control information is obtained. Decoding section 204 outputs an upper layer control signal and downlink control information to control section 205, and outputs downlink reception data. Also, the decoding unit 204 may generate a response signal (for example, ACK/NACK) based on the decoding result of the downlink received data.
- ACK/NACK response signal
- Control section 205 for example, based on a signal (eg, higher layer control signal or downlink control information) input from decoding section 204, determines radio resources for at least one of PDSCH reception, PUSCH transmission, and PUCCH transmission. decide. Control section 205 outputs the determined information to extraction section 202, demodulation section 203, coding section 206, modulation section 207, and signal allocation section 208, for example.
- a signal eg, higher layer control signal or downlink control information
- the coding unit 206 performs error correction coding on the uplink data signal (eg, PUSCH) or uplink control information (eg, UCI) based on information input from the control unit 205, for example.
- Encoding section 206 outputs the encoded bit string to modulation section 207 .
- Modulation section 207 modulates the coded bit string input from coding section 206 based on information input from control section 205, for example, and outputs the modulated signal (symbol string) to signal allocation section 208. .
- the signal allocation section 208 maps the signal input from the modulation section 207 to radio resources based on information input from the control section 205, for example.
- the signal allocation section 208 outputs, for example, the uplink signal to which the signal is mapped to the transmission section 209 .
- the transmission section 209 performs transmission signal waveform generation such as OFDM on the signal input from the signal allocation section 208 . Further, for example, in the case of OFDM transmission using CP, the transmission unit 209 performs IFFT processing on the signal and adds CP to the signal after IFFT. Alternatively, when the transmission unit 209 generates a single carrier waveform, for example, a Discrete Fourier Transform (DFT) unit may be added after the modulation unit 207 or before the signal allocation unit 208 (not shown). . Also, the transmission section 209 performs RF processing such as D/A conversion and up-conversion on the transmission signal, and transmits the radio signal to the base station 100 via the antenna.
- DFT Discrete Fourier Transform
- FIG. 11 is a flowchart showing an example of operations related to setting frequency hopping in base station 100 and terminal 200.
- FIG. 11 is a flowchart showing an example of operations related to setting frequency hopping in base station 100 and terminal 200.
- the base station 100 and the terminal 200 determine whether inter-slot frequency hopping is applied to the terminal 200 (enabled or disabled) (S101).
- terminal 200 When inter-slot frequency hopping is not applied to terminal 200 (S101: Disabled), terminal 200 does not perform inter-slot frequency hopping, for example (S102). Also, it is assumed that base station 100 does not perform inter-slot frequency hopping in terminal 200, for example.
- base station 100 and terminal 200 may set a frequency hopping pattern based on, for example, a physical slot number (eg, ns) (S104). .
- ns physical slot number
- base station 100 and terminal 200 determine whether DMRS bundling is applied to terminal 200 (S105).
- transmit repetition transmission interval or configured TDW interval in DMRS bundling
- relative slot number eg, n'
- base station 100 and terminal 200 may set, for example, a default hopping pattern (S107).
- the default hopping pattern may be, for example, a hopping pattern similar to NR Rel. 15/16 (eg, formula (1) or formula (2)).
- base station 100 and terminal 200 explicitly specify a hopping interval to terminal 200, for example, when inter-slot frequency hopping and DMRS bundling are applied to terminal 200. If not notified, the frequency hopping pattern is determined based on the slot number relative to the transmission period set for repetition transmission (or the configured TDW period in DMRS bundling).
- Terminal 200 may be set (or notified) of information regarding frequency hopping, for example.
- frequencyHopping is a parameter that sets one of multiple frequency hopping modes such as intra-slot frequency hopping or inter-slot frequency hopping.
- terminal 200 may determine whether or not to apply frequency hopping (for example, enabled or disabled) based on, for example, the value of the frequency hopping field included in DCI. For example, if the value of the frequency hopping field is set to '1', frequency hopping in the mode set by frequencyHopping is enabled, and if the value of the frequency hopping field is different from '1' (e.g., '0 ”), frequency hopping may not be applied (disabled).
- frequency hopping for example, enabled or disabled
- parameters related to frequency hopping offset Whether or not to apply frequency hopping may be determined depending on whether or not "frequencyHoppingOffset" is set. For example, if the frequency hopping offset frequencyHoppingOffset is configured, frequency hopping in the mode configured by frequencyHopping may be enabled (enabled), and if the frequency hopping offset frequencyHoppingOffset is not configured, frequency hopping may not be applied (disabled).
- the terminal 200 can be configured with a parameter (eg, "PUSCH-HoppingInterval") related to the hopping interval, for example.
- a parameter eg, "PUSCH-HoppingInterval" related to the hopping interval
- the terminal 200 may be set (or notified) of the following information regarding DMRS bundling.
- Terminal 200 can be configured with higher layer parameters related to DMRS bundling (eg, "PUSCH-DMRS-bundling").
- PUSCH-DMRS-bundling is, for example, a parameter that sets whether DMRS-bundling is applied to PUSCH transmission (for example, enabled or disabled).
- terminal 200 may determine a configured TDW for applying DMRS bundling. For example, terminal 200 can set a parameter (eg, “PUSCH-TimeDomainWindowLength”) related to the configured TDW interval length (eg, slot length for which channel estimation is performed by DMRS bundling).
- a parameter eg, “PUSCH-TimeDomainWindowLength”
- the terminal 200 may report to the base station 100 the section length L (for example, maximum value) of the configured TDW that the terminal 200 can support as the Capability of the terminal 200 .
- the terminal 200 may set the section length L of the configured TDW to a default value.
- the default value for example, the minimum value of the maximum value of the configured TDW section length L that can be supported by terminal 200 and the section length for transmitting PUSCH repetition may be set.
- inter-slot frequency hopping is set by frequencyHopping, and the hopping interval length is explicitly set by PUSCH-HoppingInterval (for example, 11 S103: Yes), the hopping interval length is set based on the value explicitly set by PUSCH-HoppingInterval (for example, S104 in FIG. 11).
- the terminal 200 may control frequency hopping (for example, frequency hopping pattern) based on the physical slot number ns. For example, the frequency position (for example, starting RB) RBstart(ns) at which PUSCH is transmitted in slot #ns may be determined as shown in the following equation (4).
- ns indicates the physical slot number in the radio frame
- RBstart indicates the leading RB position calculated by frequency resource allocation information included in at least one of DCI and RRC
- RBoffset is used for transmission in frequency hopping.
- NBWP size indicates the size of the BWP set in terminal 200 .
- NFH indicates the hopping interval length in frequency hopping.
- terminal 200 for example, in PUSCH repetition transmission to which frequency hopping is enabled, inter-slot frequency hopping is set by frequencyHopping, and the hopping interval length is not explicitly set by PUSCH-HoppingInterval, and When DMRS-bundling is enabled by PUSCH-DMRS-bundling (for example, S105 of FIG. 11: Yes), the hopping interval length is set to the same value as the interval length L of the configured TDW. Also, for example, terminal 200 may control frequency hopping (eg, frequency hopping pattern) based on the relative slot number n' with respect to the PUSCH repetition transmission period. For example, the frequency position RB(n') at which PUSCH is transmitted in slot #n' may be determined by the following equation (5).
- RBstart indicates the leading RB position calculated by frequency resource allocation information included in at least one of DCI and RRC
- RBoffset indicates the offset amount between two RB positions used for transmission in frequency hopping
- NBWP size indicates the size of the BWP set in terminal 200 .
- inter-slot frequency hopping is set by frequencyHopping, and the hopping interval length is not explicitly set by PUSCH-HoppingInterval, and If DMRS-bundling is not enabled by PUSCH-DMRS-bundling (eg, S105 of FIG. 11: No), the hopping interval length is determined to be 1.
- the terminal 200 may control frequency hopping (for example, frequency hopping pattern) based on the physical slot number ns. For example, the frequency position RBstart(ns) at which PUSCH is transmitted in slot #ns may be determined as shown in Equation (6) below.
- ns indicates the physical slot number in the radio frame
- RBstart indicates the leading RB position calculated by frequency resource allocation information included in at least one of DCI and RRC
- RBoffset is used for transmission in frequency hopping.
- NBWP size indicates the size of the BWP set in terminal 200 . In this way, for example, terminal 200 may configure a frequency hopping pattern in which RB positions are switched for each slot, similar to NR Rel.15/16.
- the base station 100 may perform PUSCH and DMRS reception processing, for example, assuming the above-described operation of the terminal 200 (PUSCH transmission).
- PUSCH-DMRS 11 is a diagram illustrating an example of PUSCH repetition that applies frequency hopping and DMRS bundling when DMRS-bundling is enabled by -bundling (eg, S105: Yes in FIG. 11); FIG.
- the number of PUSCH repetitions is 8 (for example, Repetition #0 to #7), and the hopping interval length and configured TDW interval length L are 4 slots.
- FIG. 12 shows an example of PUSCH repetition Type A with continuous slot counting
- FIG. 13 shows an example of PUSCH repetition Type A with available slot counting.
- the hopping section of frequency hopping is the first slot (for example, physical slot number #2) among slots in which configured TDW in DMRS bundling is set. is set from Alternatively, as shown in FIG. 12, the hopping interval is set from the slot (for example, physical slot number #2) corresponding to the first repetition transmission (Repetition #0) among the slots in which the transmission interval of PUSCH repetition is set. be.
- the frequency hopping pattern may be set based on relative slot numbers, with slot number #0 being physical slot number #2.
- the hopping section of frequency hopping is set to match the configured TDW section in DMRS bundling.
- frequency hopping occurs in units of the configured TDW. Therefore, as shown in FIG. 12, terminal 200 can perform DMRS bundling over multiple slots in each section of configured TDW, for example. In other words, terminal 200 does not need to set multiple actual TDWs in the configured TDW section. Therefore, in FIG. 12, in terminal 200, DMRS bundling is applied using the same number of slots as the number of slots set in the configured TDW, so channel estimation accuracy can be improved.
- the hopping section of frequency hopping is the first slot (for example, physical slot number #2) among slots in which configured TDW in DMRS bundling is set. is set from Alternatively, as shown in FIG. 13, the hopping interval is set from the slot (for example, physical slot number #2) corresponding to the first repetition transmission (Repetition #0) among the slots in which the PUSCH repetition transmission interval is set. be.
- the frequency hopping pattern is relative to physical slot number #2, which is the leading slot in which configured TDW is set (or the leading slot in which the transmission period of PUSCH repetition is set), and slot number #0. slot number.
- the hopping section of frequency hopping is more likely to align with the section of configured TDW in DMRS bundling, compared to, for example, FIG.
- frequency hopping tends to occur in units of configured TDW sections. Therefore, terminal 200 does not need to set multiple actual TDWs in the configured TDW section. For example, in FIG. 6, multiple actual TDWs are set within one configured TDW, whereas in FIG. 13, one actual TDW is set within one configured TDW. Therefore, as shown in FIG. 13, terminal 200 can perform DMRS bundling over multiple slots (for example, available slots) in each section of configured TDW, for example. Therefore, in FIG. 13, in terminal 200, DMRS bundling is applied using more slots set in the configured TDW, so channel estimation accuracy can be improved.
- the hopping interval in frequency hopping and the configured TDW interval in DMRS bundling can be easily aligned, so terminal 200 can perform DMRS bundling in units of configured TDW intervals. It is possible to prevent deterioration of the channel estimation accuracy improvement effect.
- a frequency hopping pattern determined based on the physical slot number is applied. This makes it possible to align frequency hopping patterns among a plurality of terminals 200, so there is an advantage that scheduling in consideration of a plurality of terminals in base station 100 becomes easier.
- Terminal 200 may be configured with higher layer parameters (eg, “interslotFrequencyHopping”) regarding inter-slot frequency hopping, for example.
- interslotFrequencyHopping is a parameter that indicates whether to apply inter-slot frequency hopping that performs PUCCH transmission in different slots (for example, enabled or disabled).
- the terminal 200 can be configured with parameters (eg, "PUCCH-HoppingInterval") related to the hopping interval, for example.
- parameters eg, "PUCCH-HoppingInterval"
- terminal 200 can be configured with higher layer parameters (eg, "PUCCH-DMRS-bundling") regarding DMRS bundling, for example.
- PUCCH-DMRS-bundling is, for example, a parameter that sets whether to apply DMRS-bundling to PUCCH transmission (for example, enabled or disabled).
- terminal 200 may determine a configured TDW for applying DMRS bundling.
- terminal 200 may be configured with a parameter (eg, "PUCCH-TimeDomainWindowLength") regarding the interval length of the configured TDW.
- the terminal 200 may report to the base station 100 the section length L (for example, maximum value) of the configured TDW that the terminal 200 can support as the Capability of the terminal 200 .
- the terminal 200 may set the section length L of the configured TDW to a default value.
- the default value for example, the minimum value between the maximum value of the configured TDW section length L that can be supported by the terminal 200 and the section length for transmitting the PUCCH repetition may be set.
- inter-slot frequency hopping is set by interslotFrequencyHopping, and the hopping interval length is explicitly set by PUCCH-HoppingInterval (for example, S103 in FIG. 11), and sets the hopping interval length based on the value explicitly set by PUCCH-HoppingInterval (for example, S104 in FIG. 11).
- the terminal 200 may control frequency hopping (for example, frequency hopping pattern) based on the physical slot number ns. For example, the frequency position RBstart(ns) at which PUCCH is transmitted in slot #ns may be determined as shown in the following equation (7).
- ns indicates the physical slot number in the radio frame
- RB0 and RB1 indicate the first RB position and second RB position set by PUCCH resource allocation information (eg, PUCCH resource set).
- NFH indicates the hopping interval length in frequency hopping.
- terminal 200 is configured for inter-slot frequency hopping by interslotFrequencyHopping, and when the hopping interval length is not explicitly configured by PUCCH-HoppingInterval, and When DMRS-bundling is enabled by PUCCH-DMRS-bundling (eg, S105: Yes in FIG. 11), the hopping interval length is set to the same value as the interval length L of the configured TDW.
- terminal 200 may control frequency hopping (eg, frequency hopping pattern) based on the relative slot number n' with respect to the PUCCH repetition transmission interval. For example, the frequency position RB(n') at which PUCCH is transmitted in slot #n' may be determined by the following equation (8).
- RB0 and RB1 indicate the first RB position and the second RB position configured by PUCCH resource allocation information (for example, PUCCH resource set).
- terminal 200 is configured for inter-slot frequency hopping by interslotFrequencyHopping, and when the hopping interval length is not explicitly configured by PUCCH-HoppingInterval, and If DMRS-bundling is not enabled by PUCCH-DMRS-bundling (eg, S105 of FIG. 11: No), the hopping interval length is determined to be 1. Also, for example, terminal 200 may control frequency hopping (eg, frequency hopping pattern) based on the relative slot number n' with respect to the PUCCH repetition transmission interval. For example, the frequency position RB(n') at which PUCCH is transmitted in slot #n' may be determined as shown in Equation (9) below.
- Equation (9) Equation (9) below.
- RB0 and RB1 indicate the first RB position and the second RB position configured by PUCCH resource allocation information (for example, PUCCH resource set). In this way, terminal 200 may configure a frequency hopping pattern in which RB positions are switched for each slot, similar to NR Rel.15/16.
- the base station 100 may perform PUCCH and DMRS reception processing, for example, assuming the above-described operation of the terminal 200 (PUCCH transmission).
- the hopping interval in frequency hopping and the configured TDW interval in DMRS bundling are easily aligned.
- DMRS bundling can be performed in units of intervals, and deterioration of the channel estimation accuracy improvement effect can be prevented.
- a frequency hopping pattern determined based on the physical slot number is applied. This makes it possible to align frequency hopping patterns among a plurality of terminals 200, and thus has the advantage of facilitating scheduling in consideration of a plurality of terminals in base station 100.
- FIG. 11 when the hopping interval is explicitly set (eg, S103: Yes in FIG. 11), a frequency hopping pattern determined based on the physical slot number is applied. This makes it possible to align frequency hopping patterns among a plurality of terminals 200, and thus has the advantage of facilitating scheduling in consideration of a plurality of terminals in base station 100.
- base station 100 and terminal 200 for example, a transmission interval configured for repetition of an uplink signal (for example, PUSCH or PUCCH) (or configured in DMRS bundling applied to repetition TDW interval), frequency hopping that performs transmission at the same RB position in multiple intervals is controlled.
- a transmission interval configured for repetition of an uplink signal (for example, PUSCH or PUCCH) (or configured in DMRS bundling applied to repetition TDW interval)
- frequency hopping that performs transmission at the same RB position in multiple intervals is controlled.
- base station 100 and terminal 200 do not set a hopping interval in frequency hopping to terminal 200 by control information and DMRS bundling is applied, slot numbers relative to the repetition transmission interval to control frequency hopping based on
- the frequency hopping pattern can be set (or switched) for each section of configured TDW in DMRS bundling. Therefore, according to the present embodiment, in DMRS bundling, it is possible to perform channel estimation using more slots set in the configured TDW, and improve channel estimation accuracy.
- the hopping interval in frequency hopping is set in terminal 200 by control information
- base station 100 and terminal 200 use the hopping interval set by the control information and the physical slot number.
- Frequency hopping is controlled based on As a result, frequency hopping patterns among a plurality of terminals 200 are similarly set, so that processing (for example, scheduling) in base station 100 can be simplified.
- Embodiment 2 The configurations of the base station and terminal according to this embodiment may be the same as the configurations of base station 100 and terminal 200 according to Embodiment 1, respectively.
- FIG. 14 is a flowchart showing an example of operations related to setting frequency hopping in base station 100 and terminal 200.
- FIG. 14 the same reference numerals are assigned to the same processing as in the first embodiment (FIG. 11), and the description thereof will be omitted.
- transmit repetition transmission interval or configured TDW interval in DMRS bundling
- relative slot number eg, n'
- base station 100 and terminal 200 may set a frequency hopping pattern based on, for example, a physical slot number (eg, ns) (S104). .
- base station 100 and terminal 200 may set, for example, a default hopping pattern (S107).
- the default hopping pattern may be, for example, a hopping pattern similar to NR Rel. 15/16 (eg, formula (1) or formula (2)).
- base station 100 and terminal 200 when DMRS bundling is applied to terminal 200, base station 100 and terminal 200 set the frequency hopping pattern to repetition transmission during a transmission interval (or , the interval of the configured TDW in DMRS bundling).
- base station 100 and terminal 200 are frequency Hopping may be applied.
- Terminal 200 may be set (or notified) of information regarding frequency hopping, for example.
- frequencyHopping is a parameter for setting one of a plurality of frequency hopping modes such as intra-slot frequency hopping or inter-slot frequency hopping.
- terminal 200 may determine whether or not to apply frequency hopping (for example, enabled or disabled) based on, for example, the value of the frequency hopping field included in DCI. For example, if the value of the frequency hopping field is set to '1', frequency hopping in the mode set by frequencyHopping is enabled, and if the value of the frequency hopping field is different from '1' (e.g., '0 ”), frequency hopping may not be applied (disabled).
- frequency hopping for example, enabled or disabled
- parameters related to frequency hopping offset when terminal 200 does not include a frequency hopping field in DCI, or when transmitting data according to resource allocation indicated by RRC (for example, in the case of Configured grant Type 1), parameters related to frequency hopping offset Depending on whether frequencyHoppingOffset is set, it may be determined whether to apply frequency hopping. For example, if the frequency hopping offset frequencyHoppingOffset is configured, frequency hopping in the mode configured by frequencyHopping may be enabled (enabled), and if the frequency hopping offset frequencyHoppingOffset is not configured, frequency hopping may not be applied (disabled).
- the terminal 200 can be configured with parameters related to the hopping interval length (eg, PUSCH-HoppingInterval), for example.
- the terminal 200 may be set (or notified) of the following information regarding DMRS bundling.
- Terminal 200 can be configured with higher layer parameters related to DMRS bundling (eg, PUSCH-DMRS-bundling).
- PUSCH-DMRS-bundling is, for example, a parameter that sets whether DMRS-bundling is applied to PUSCH transmission (for example, enabled or disabled).
- terminal 200 may determine a configured TDW for applying DMRS bundling.
- terminal 200 can be configured with a parameter related to the interval length of the configured TDW (eg, PUSCH-TimeDomainWindowLength).
- the terminal 200 may report to the base station 100 the section length L (for example, maximum value) of the configured TDW that the terminal 200 can support as the Capability of the terminal 200 .
- the terminal 200 may set the section length L of the configured TDW to a default value.
- the default value for example, the minimum value of the maximum value of the configured TDW section length L that can be supported by terminal 200 and the section length for transmitting PUSCH repetition may be set.
- frequency hopping eg, frequency hopping pattern
- the frequency position RBstart(ns) at which PUSCH is transmitted in slot #ns may be determined by the following equation (10).
- ns indicates the physical slot number in the radio frame
- RBstart indicates the leading RB position calculated by frequency resource allocation information included in at least one of DCI and RRC
- RBoffset is used for transmission in frequency hopping.
- NBWP size indicates the size of the BWP set in terminal 200 .
- NFH indicates the hopping section length in frequency hopping.
- the hopping interval length NFH may be set based on the value explicitly set by PUSCH-HoppingInterval.
- frequency hopping for example, frequency hopping pattern
- the frequency position RB(n') at which PUSCH is transmitted in slot #n' may be determined by the following equation (11).
- RBstart indicates the leading RB position calculated by frequency resource allocation information included in at least one of DCI and RRC
- RBoffset indicates the offset amount between two RB positions used for transmission in frequency hopping
- NBWP size indicates the size of the BWP set in terminal 200 .
- NFH indicates the hopping section length in frequency hopping.
- the hopping interval length NFH may be set based on the value explicitly set by PUSCH-HoppingInterval.
- the base station 100 may perform PUSCH and DMRS reception processing, for example, assuming the above-described operation of the terminal 200 (PUSCH transmission).
- DMRS bundling when DMRS bundling is applied, the hopping interval in frequency hopping and the configured TDW interval in DMRS bundling are easily aligned. DMRS bundling can be performed on a per-unit basis, and deterioration of the channel estimation accuracy improvement effect can be prevented.
- a frequency hopping pattern determined based on physical slots is applied. This makes it possible to align frequency hopping patterns among a plurality of terminals 200, so there is an advantage that scheduling in consideration of a plurality of terminals in base station 100 becomes easier.
- Terminal 200 may be configured with higher layer parameters (eg, interslotFrequencyHopping) regarding inter-slot frequency hopping, for example.
- interslotFrequencyHopping is a parameter indicating whether to apply inter-slot frequency hopping (for example, enabled or disabled).
- terminal 200 can be configured with a parameter related to the hopping interval length (eg, PUCCH-HoppingInterval), for example.
- a parameter related to the hopping interval length eg, PUCCH-HoppingInterval
- terminal 200 can be configured with higher layer parameters (eg, PUCCH-DMRS-bundling) regarding DMRS bundling, for example.
- PUCCH-DMRS-bundling is, for example, a parameter that sets whether to apply DMRS-bundling to PUCCH transmission (for example, enabled or disabled).
- terminal 200 may determine a configured TDW for applying DMRS bundling.
- terminal 200 may be configured with a parameter related to the interval length of the configured TDW (eg, PUCCH-TimeDomainWindowLength).
- the terminal 200 may report to the base station 100 the section length L (for example, maximum value) of the configured TDW that the terminal 200 can support as the Capability of the terminal 200 .
- the terminal 200 may set the section length L of the configured TDW to a default value.
- the default value for example, the minimum value between the maximum value of the configured TDW section length L that can be supported by the terminal 200 and the section length for transmitting the PUCCH repetition may be set.
- inter-slot frequency hopping is set by interslotFrequencyHopping
- the hopping interval length is explicitly set by PUCCH-HoppingInterval
- the terminal 200 may control frequency hopping (for example, frequency hopping pattern) based on the physical slot number ns. For example, the frequency position RBstart(ns) at which PUCCH is transmitted in slot #ns may be determined as shown in Equation (12) below.
- ns indicates the physical slot number in the radio frame
- RB0 and RB1 indicate the first RB position and second RB position set by PUCCH resource allocation information (eg, PUCCH resource set).
- NFH indicates the hopping interval length in frequency hopping.
- inter-slot frequency hopping is set by interslotFrequencyHopping and DMRS-bundling is applied (enabled) by PUCCH-DMRS-bundling.
- frequency hopping eg, frequency hopping pattern
- the frequency position RB(n') at which PUCCH is transmitted in slot #n' may be determined as shown in Equation (13) below.
- RB0 and RB1 indicate the first RB position and the second RB position configured by PUCCH resource allocation information (for example, PUCCH resource set).
- NFH indicates the hopping section length in frequency hopping.
- the hopping interval length NFH may be set based on the value explicitly set by PUCCH-HoppingInterval.
- terminal 200 is configured for inter-slot frequency hopping by interslotFrequencyHopping, and when the hopping interval length is not explicitly configured by PUCCH-HoppingInterval, and PUCCH- If DMRS-bundling is not enabled by DMRS-bundling (eg, S202 of FIG. 14: No), the hopping interval length is determined to be 1.
- terminal 200 may control frequency hopping (eg, frequency hopping pattern) based on the relative slot number n' with respect to the PUCCH repetition transmission period. For example, the frequency position RB(n') at which PUCCH is transmitted in slot #n' may be determined by the following equation (14).
- RB0 and RB1 indicate the first RB position and the second RB position configured by PUCCH resource allocation information (for example, PUCCH resource set). In this way, terminal 200 may configure a frequency hopping pattern in which RB positions are switched for each slot, similar to NR Rel.15/16.
- the base station 100 may perform PUCCH and DMRS reception processing, for example, assuming the above-described operation of the terminal 200 (PUCCH transmission).
- terminal 200 can perform DMRS bundling in units of configured TDW intervals, and can prevent deterioration of the channel estimation accuracy improvement effect.
- a frequency hopping pattern determined based on the physical slot number is applied. This makes it possible to align frequency hopping patterns among a plurality of terminals 200, and thus has the advantage of facilitating scheduling in consideration of a plurality of terminals in base station 100.
- base station 100 and terminal 200 for example, a transmission interval configured for repetition of an uplink signal (for example, PUSCH or PUCCH) (or configured in DMRS bundling applied to repetition TDW interval), frequency hopping that performs transmission at the same RB position in multiple intervals is controlled.
- base station 100 and terminal 200 control frequency hopping based on relative slot numbers with respect to repetition transmission intervals.
- frequency hopping patterns can be set (or switched) in units of configured TDW sections in DMRS bundling in repetition transmission. Therefore, according to the present embodiment, in DMRS bundling, it is possible to perform channel estimation using more slots set in the configured TDW, and improve channel estimation accuracy.
- base station 100 and terminal 200 when DMRS bundling is not applied and the hopping interval in frequency hopping is set in terminal 200 by control information, is set by the control information. Frequency hopping is controlled based on the hopping interval and the physical slot number. As a result, frequency hopping patterns among a plurality of terminals 200 are similarly set, so that processing (for example, scheduling) in base station 100 can be simplified.
- the configurations of the base station and terminal according to this embodiment may be the same as the configurations of base station 100 and terminal 200 according to Embodiment 1 or Embodiment 2, respectively.
- slot formats can be set by upper layer parameters (eg, "TDD-UL-DL-pattern").
- TDD-UL-DL-pattern is a parameter related to the period setting the slot format (eg, "dl-UL-TransmissionPeriodicity"), a parameter related to the number of downlink slots included in the period (eg, "nrofDownlinkSlots"), a period Parameters related to the number of uplink slots included in (e.g., "nrofUplinkSlots”), parameters related to the number of downlink symbols included in the cycle (e.g., "nrofDownlinkSymbols”), and parameters related to the number of uplink symbols included in the cycle (e.g., "nrofUplinkSymbols").
- FIG. 15 is a diagram showing an example of a slot format set by TDD-UL-DL-pattern.
- the subcarrier spacing (SCS) is 15 kHz and the time length of one slot is 1 ms.
- SCS subcarrier spacing
- the frequency hopping pattern determined based on the physical slot number and the relative slot number can be the same as the frequency hopping pattern determined based on .
- FIG. 10 is a diagram showing an example of PUSCH repetition applying frequency hopping and DMRS bundling for the same 5 ms;
- FIG. 16 shows a setting example of a frequency hopping pattern determined based on the physical slot number
- FIG. 17 is determined based on the relative slot number for the transmission interval in repetition transmission (or configured TDW in DMRS bundling).
- 4 shows an example of frequency hopping pattern settings.
- the frequency hopping patterns eg, RB positions (or hops) in each slot
- the setting of actual TDW in DMRS bundling is the same.
- values that can be set for each of the hopping interval length and the configured TDW interval length include values ( supporting values) may be included.
- possible values for each of the hopping interval length and the configured TDW interval length include at least one of ⁇ 0.5ms, 0.625ms, 1ms, 1.25ms, 2ms, 2.5ms, 3ms, 4ms, 5ms, 10ms ⁇ . value may be included.
- the terminal 200 uses the frequency hopping pattern in frequency hopping. may be set as the default pattern (prescribed pattern).
- the default pattern may be a frequency hopping pattern determined based on the physical slot number.
- the frequency position RBstart(ns) at which PUSCH is transmitted may be determined as shown in the following equation (15) based on the physical slot number ns.
- ns indicates the physical slot number in the radio frame
- RBstart indicates the leading RB position calculated by frequency resource allocation information included in at least one of DCI and RRC
- RBoffset is used for transmission in frequency hopping.
- NBWP size indicates the size of the BWP set in terminal 200 .
- the default pattern may be a frequency hopping pattern determined based on a relative slot number with respect to the PUCCH repetition transmission period (or the configured TDW period in DMRS bundling).
- the frequency position RB(n') at which the PUCCH is transmitted may be determined as shown in Equation (16) below based on the relative slot number n' with respect to the PUCCH repetition transmission interval.
- RB0 and RB1 indicate the first RB position and the second RB position configured by PUCCH resource allocation information (for example, PUCCH resource set).
- hopping interval length in frequency hopping and the configured TDW interval length in DMRS bundling are the same as the value set by dl-UL-TransmissionPeriodicity, base station 100 and terminal 200 There is no need to change (or switch) the frequency hopping pattern from the default pattern. Also in the default pattern, the hopping section in frequency hopping and the configured TDW section in DMRS bundling can be aligned as in the first or second embodiment. Therefore, in the present embodiment, hopping pattern setting processing (for example, conditional branch processing) in terminal 200 can be simplified, and DMRS bundling can be performed in units of configured TDW intervals, resulting in the effect of improving channel estimation accuracy. deterioration can be prevented.
- hopping pattern setting processing for example, conditional branch processing
- the values that the hopping interval length and configured TDW interval length can take may include other values in addition to the values supported by the parameter dl-UL-TransmissionPeriodicity related to the period for setting the slot format. Also, the range of possible values for both the hopping interval length and the configured TDW interval length may be the same, and the possible values for one may be a subset of the possible values for the other.
- Embodiment 1 may be applied to PUSCH
- Embodiment 2 may be applied to PUCCH.
- a default inter-slot frequency hopping pattern may be applied.
- the default inter-slot frequency hopping pattern may be a frequency hopping pattern determined based on physical slot numbers or a frequency hopping pattern determined based on relative slot numbers.
- the transport block size (TBS: Transport Block Size) calculated from the amount of resources allocated per slot is multiplied by a scaling factor greater than 1 to determine TBS.
- TBS Transport Block Size
- it may be applied to "TB processing over Multi-Slot PUSCH (TBoMS)" that transmits using multiple slots.
- non-limiting embodiments of the present disclosure may be applied, for example, to PUCCH repetition on a per-subslot basis.
- "inter-slot channel estimation” and “inter-slot frequency hopping” may be replaced with “inter-subslot channel estimation” and “inter-subslit frequency hopping”, respectively.
- different embodiments may be applied depending on the respective repetition methods of PUSCH and PUCCH.
- the default inter-slot frequency hopping pattern may be a frequency hopping pattern determined based on physical slot numbers or a frequency hopping pattern determined based on relative slot numbers.
- the parameters related to the hopping interval length may be cell-specific parameters or terminal-specific parameters.
- the inter-slot frequency hopping pattern is a frequency hopping pattern determined based on the physical slot number
- the parameter regarding the hopping interval length is a terminal-specific parameter.
- the inter-slot frequency hopping pattern may be a frequency hopping pattern determined based on relative slot numbers.
- PUSCH and PUCCH have been described as an example, but the channel or signal type may be a different type from PUSCH and PUCCH.
- one non-limiting embodiment of the present disclosure may be applied to repetition of SRS (Sounding Reference Signal) or PRACH (Physical Random Access Channel).
- one non-limiting embodiment of the present disclosure is not limited to uplink transmission, and may be applied to downlink or sidelink transmission.
- the frame number may be added to the determination of the frequency hopping pattern based on the physical slot number or relative slot number of the embodiment described above.
- the parameter setting method for the terminal 200 is not limited to the above example. It may be set (or notified) from 100 to terminal 200, or may be defined in advance in a standard and set in terminal 200 in advance.
- the capability information may include an information element (IE) individually indicating whether or not the terminal 200 supports at least one of the functions, operations, or processes shown in each embodiment and each modification described above.
- the capability information may include an information element indicating whether the terminal 200 supports a combination of two or more of the functions, operations, or processes shown in each embodiment and each modification described above.
- terminal 200 not supporting part of the functions, operations, or processes shown in each of the above-described embodiments and modifications means that such functions, operations, or processes are restricted in terminal 200. It may be read as For example, base station 100 may be notified of information or requests regarding such restrictions.
- Information about the capabilities or limitations of terminal 200 may be defined, for example, in a standard, or may be implicitly associated with information known in base station 100 or information transmitted to base station 100 . may be notified.
- the downlink control signal (information) related to the present disclosure may be a signal (information) transmitted by PDCCH of the physical layer, a signal (information) transmitted by MAC CE (Control Element) or RRC of the higher layer ) can be used. Also, the downlink control signal may be a signal (information) defined in advance.
- the uplink control signal (information) related to the present disclosure may be a signal (information) transmitted by PUCCH of the physical layer, or may be a signal (information) transmitted by MAC CE or RRC of the higher layer. Also, the uplink control signal may be a signal (information) defined in advance. Also, the uplink control signal may be replaced with UCI (uplink control information), 1st stage SCI (sidelink control information), and 2nd stage SCI.
- the base station includes TRP (Transmission Reception Point), cluster head, access point, RRH (Remote Radio Head), eNodeB (eNB), gNodeB (gNB), BS (Base Station), BTS (Base Transceiver Station) , parent device, gateway, or the like.
- TRP Transmission Reception Point
- eNB eNodeB
- gNodeB gNB
- BTS Base Transceiver Station
- parent device gateway, or the like.
- a terminal may serve as a base station.
- a base station may be a relay device that relays communication between an upper node and a terminal.
- the base station may be a roadside device.
- the present disclosure may be applied to any of uplink, downlink, and sidelink.
- the present disclosure to uplink PUSCH, PUCCH, PRACH, downlink PDSCH, PDCCH, PBCH, sidelink PSSCH (Physical Sidelink Shared Channel), PSCCH (Physical Sidelink Control Channel), PSBCH (Physical Sidelink Broadcast Channel) may apply.
- PDCCH, PDSCH, PUSCH, and PUCCH are examples of downlink control channels, downlink data channels, uplink data channels, and uplink control channels.
- PSCCH and PSSCH are examples of sidelink control channels and sidelink data channels.
- PBCH and PSBCH are broadcast channels, and PRACH is an example of a random access channel.
- the reference signal is a signal known to both the base station and the terminal, and is also called RS (Reference Signal) or pilot signal.
- Reference signals are DMRS, CSI-RS (Channel State Information - Reference Signal), TRS (Tracking Reference Signal), PTRS (Phase Tracking Reference Signal), CRS (Cell-specific Reference Signal), SRS (Sounding Reference Signal). or
- the unit of time resources is not limited to one or a combination of slots and symbols, for example, frames, superframes, subframes, slots, time slots, subslots, minislots or symbols, OFDM Division Multiplexing) symbols, SC-FDMA (Single Carrier-Frequency Division Multiple Access) symbols, or other time resource units.
- the number of symbols included in one slot is not limited to the number of symbols exemplified in the above embodiment, and may be another number of symbols.
- the present disclosure may be applied to both licensed bands and unlicensed bands.
- the present disclosure may be applied to any of communication between base stations and terminals (Uu link communication), communication between terminals (Sidelink communication), and V2X (Vehicle to Everything) communication.
- the channels of the present disclosure may be replaced with PSCCH, PSSCH, PSFCH (Physical Sidelink Feedback Channel), PSBCH, PDCCH, PUCCH, PDSCH, PUSCH, and PBCH.
- the present disclosure may be applied to both terrestrial networks and non-terrestrial networks (NTN: Non-Terrestrial Network) using satellites and advanced pseudolites (HAPS).
- NTN Non-Terrestrial Network
- HAPS advanced pseudolites
- the present disclosure may also be applied to terrestrial networks with large transmission delays compared to symbol lengths and slot lengths, such as networks with large cell sizes and ultra-wideband transmission networks.
- An antenna port refers to a logical antenna (antenna group) composed of one or more physical antennas.
- the antenna port does not always refer to one physical antenna, but may refer to an array antenna or the like composed of a plurality of antennas.
- how many physical antennas constitute an antenna port is not specified, but is specified as the minimum unit in which a terminal can transmit a reference signal.
- an antenna port may be defined as the minimum unit for multiplying weights of precoding vectors.
- 5G fifth generation cellular technology
- NR new radio access technologies
- the system architecture as a whole is assumed to be NG-RAN (Next Generation-Radio Access Network) with gNB.
- the gNB provides UE-side termination of NG radio access user plane (SDAP/PDCP/RLC/MAC/PHY) and control plane (RRC) protocols.
- SDAP/PDCP/RLC/MAC/PHY NG radio access user plane
- RRC control plane
- the gNB also connects to the Next Generation Core (NGC) via the Next Generation (NG) interface, and more specifically, the Access and Mobility Management Function (AMF) via the NG-C interface (e.g., a specific core entity that performs AMF) , and is also connected to a UPF (User Plane Function) (eg, a specific core entity that performs UPF) by an NG-U interface.
- NNC Next Generation Core
- AMF Access and Mobility Management Function
- UPF User Plane Function
- UPF User Plane Function
- the NR user plane protocol stack (e.g., 3GPP TS 38.300, see section 4.4.1) consists of a network-side terminated PDCP (Packet Data Convergence Protocol (see TS 38.300, section 6.4)) sublayer at the gNB, It includes the RLC (Radio Link Control (see TS 38.300 clause 6.3)) sublayer and the MAC (Medium Access Control (see TS 38.300 clause 6.2)) sublayer. Also, a new Access Stratum (AS) sublayer (Service Data Adaptation Protocol (SDAP)) has been introduced on top of PDCP (see, for example, 3GPP TS 38.300, Section 6.5).
- PDCP Packet Data Convergence Protocol
- RLC Radio Link Control
- MAC Medium Access Control
- SDAP Service Data Adaptation Protocol
- the Medium-Access-Control layer handles logical channel multiplexing and scheduling and scheduling-related functions, including handling various neurology.
- the physical layer is responsible for encoding, PHY HARQ processing, modulation, multi-antenna processing, and mapping of signals to appropriate physical time-frequency resources.
- the physical layer also handles the mapping of transport channels to physical channels.
- the physical layer provides services to the MAC layer in the form of transport channels.
- a physical channel corresponds to a set of time-frequency resources used for transmission of a particular transport channel, and each transport channel is mapped to a corresponding physical channel.
- physical channels include PRACH (Physical Random Access Channel), PUSCH (Physical Uplink Shared Channel), and PUCCH (Physical Uplink Control Channel) as uplink physical channels, and PDSCH (Physical Downlink Shared Channel) as downlink physical channels.
- PDCCH Physical Downlink Control Channel
- PBCH Physical Broadcast Channel
- NR use cases/deployment scenarios include enhanced mobile broadband (eMBB), ultra-reliable low-latency communications (URLLC), massive machine type communication (mMTC) with diverse requirements in terms of data rate, latency and coverage can be included.
- eMBB is expected to support peak data rates (20 Gbps in the downlink and 10 Gbps in the uplink) and user-experienced data rates on the order of three times the data rates provided by IMT-Advanced.
- URLLC more stringent requirements are imposed for ultra-low latency (0.5 ms each for UL and DL for user plane latency) and high reliability (1-10-5 within 1 ms).
- mMTC preferably has high connection density (1,000,000 devices/km 2 in urban environments), wide coverage in hostile environments, and extremely long battery life (15 years) for low cost devices. can be requested.
- the OFDM numerology (e.g., subcarrier spacing, OFDM symbol length, cyclic prefix (CP) length, number of symbols per scheduling interval) suitable for one use case may be used for other use cases. May not be valid.
- low-latency services preferably require shorter symbol lengths (and thus larger subcarrier spacings) and/or fewer symbols per scheduling interval (also called TTI) than mMTC services.
- TTI time-to-live
- Subcarrier spacing may optionally be optimized to maintain similar CP overhead.
- the value of subcarrier spacing supported by NR may be one or more.
- resource element may be used to mean the smallest resource unit consisting of one subcarrier for the length of one OFDM/SC-FDMA symbol.
- resource grids of subcarriers and OFDM symbols are defined for uplink and downlink, respectively.
- Each element of the resource grid is called a resource element and is identified based on frequency index in frequency domain and symbol position in time domain (see 3GPP TS 38.211 v15.6.0).
- FIG. 19 shows functional separation between NG-RAN and 5GC.
- Logical nodes in NG-RAN are gNBs or ng-eNBs.
- 5GC has logical nodes AMF, UPF and SMF.
- gNBs and ng-eNBs host the following main functions: - Radio Bearer Control, Radio Admission Control, Connection Mobility Control, dynamic allocation of resources to UEs in both uplink and downlink (scheduling), etc. Functions of Radio Resource Management; - IP header compression, encryption and integrity protection of data; - AMF selection at UE attach when routing to an AMF cannot be determined from information provided by the UE; - routing of user plane data towards UPF; - routing of control plane information towards AMF; - setting up and tearing down connections; - scheduling and sending paging messages; - scheduling and transmission of system broadcast information (originating from AMF or Operation, Admission, Maintenance (OAM)); - configuration of measurements and measurement reports for mobility and scheduling; - transport level packet marking in the uplink; - session management; - support for network slicing; - QoS flow management and mapping to data radio bearers; - Support for UEs in RRC_INACTIVE state; - the ability to deliver NAS messages; - sharing
- the Access and Mobility Management Function hosts the following main functions: - Ability to terminate Non-Access Stratum (NAS) signaling; - security of NAS signaling; - Access Stratum (AS) security controls; - Core Network (CN) inter-node signaling for mobility across 3GPP access networks; - Reachability to UEs in idle mode (including control and execution of paging retransmissions); - management of the registration area; - support for intra-system and inter-system mobility; - access authentication; - access authorization, including checking roaming rights; - mobility management control (subscription and policy); - support for network slicing; - Selection of the Session Management Function (SMF).
- NAS Non-Access Stratum
- AS Access Stratum
- CN Core Network
- the User Plane Function hosts the following main functions: - Anchor points for intra-RAT mobility/inter-RAT mobility (if applicable); - External PDU (Protocol Data Unit) session points for interconnection with data networks; - packet routing and forwarding; – Policy rule enforcement for packet inspection and user plane parts; - reporting of traffic usage; - an uplink classifier to support routing of traffic flows to the data network; - Branching Points to support multi-homed PDU sessions; - QoS processing for the user plane (e.g. packet filtering, gating, UL/DL rate enforcement; - verification of uplink traffic (mapping of SDF to QoS flows); - Downlink packet buffering and downlink data notification trigger function.
- Anchor points for intra-RAT mobility/inter-RAT mobility if applicable
- External PDU Protocol Data Unit
- – Policy rule enforcement for packet inspection and user plane parts for interconnection with data networks
- - reporting of traffic usage - an uplink classifier to support routing of traffic flows to the data network
- Session Management Function hosts the following main functions: - session management; - allocation and management of IP addresses for UEs; - UPF selection and control; - the ability to configure traffic steering in the User Plane Function (UPF) to route traffic to the proper destination; - policy enforcement and QoS in the control part; - Notification of downlink data.
- UPF User Plane Function
- Figure 20 shows some interactions between UE, gNB and AMF (5GC entity) when UE transitions from RRC_IDLE to RRC_CONNECTED for NAS part (see TS 38.300 v15.6.0).
- RRC is a higher layer signaling (protocol) used for UE and gNB configuration.
- the AMF prepares the UE context data (which includes, for example, the PDU session context, security keys, UE Radio Capabilities, UE Security Capabilities, etc.) and the initial context Send to gNB with INITIAL CONTEXT SETUP REQUEST.
- the gNB then activates AS security together with the UE. This is done by the gNB sending a SecurityModeCommand message to the UE and the UE responding to the gNB with a SecurityModeComplete message.
- the gNB sends an RRCReconfiguration message to the UE, and the gNB receives the RRCReconfigurationComplete from the UE to reconfigure for setting up Signaling Radio Bearer 2 (SRB2) and Data Radio Bearer (DRB) .
- SRB2 Signaling Radio Bearer 2
- DRB Data Radio Bearer
- the step for RRCReconfiguration is omitted as SRB2 and DRB are not set up.
- the gNB notifies the AMF that the setup procedure is complete with an INITIAL CONTEXT SETUP RESPONSE.
- the present disclosure provides control circuitry for operationally establishing a Next Generation (NG) connection with a gNodeB and an operationally NG connection so that signaling radio bearers between the gNodeB and User Equipment (UE) are set up.
- a 5th Generation Core (5GC) entity eg, AMF, SMF, etc.
- AMF Next Generation
- SMF User Equipment
- the gNodeB sends Radio Resource Control (RRC) signaling including a Resource Allocation Configuration Information Element (IE) to the UE via the signaling radio bearer.
- RRC Radio Resource Control
- IE Resource Allocation Configuration Information Element
- the UE then performs uplink transmission or downlink reception based on the resource allocation configuration.
- Figure 21 shows some of the use cases for 5G NR.
- the 3rd generation partnership project new radio (3GPP NR) considers three use cases envisioned by IMT-2020 to support a wide variety of services and applications.
- the first stage of specifications for high-capacity, high-speed communications (eMBB: enhanced mobile-broadband) has been completed.
- Current and future work includes expanding eMBB support, as well as ultra-reliable and low-latency communications (URLLC) and Massively Connected Machine Type Communications (mMTC). Standardization for massive machine-type communications is included
- Figure 21 shows some examples of envisioned usage scenarios for IMT beyond 2020 (see eg ITU-RM.2083 Figure 2).
- URLLC use cases have strict performance requirements such as throughput, latency (delay), and availability.
- URLLLC use cases are envisioned as one of the elemental technologies to realize these future applications such as wireless control of industrial production processes or manufacturing processes, telemedicine surgery, automation of power transmission and distribution in smart grids, and traffic safety. ing.
- URLLLC ultra-reliability is supported by identifying technologies that meet the requirements set by TR 38.913.
- an important requirement includes a target user plane latency of 0.5 ms for UL (uplink) and 0.5 ms for DL (downlink).
- the general URLLC requirement for one-time packet transmission is a block error rate (BLER) of 1E-5 for a packet size of 32 bytes with a user plane latency of 1 ms.
- BLER block error rate
- NRURLC the technical enhancements targeted by NRURLC aim to improve latency and improve reliability.
- Technical enhancements for latency improvement include configurable numerology, non-slot-based scheduling with flexible mapping, grant-free (configured grant) uplink, slot-level repetition in data channels, and downlink pre-emption.
- Preemption means that a transmission with already allocated resources is stopped and the already allocated resources are used for other transmissions with lower latency/higher priority requirements that are later requested. Transmissions that have already been authorized are therefore superseded by later transmissions. Preemption is applicable regardless of the concrete service type. For example, a transmission of service type A (URLLC) may be replaced by a transmission of service type B (eg eMBB).
- Technology enhancements for increased reliability include a dedicated CQI/MCS table for a target BLER of 1E-5.
- mMTC massive machine type communication
- Stringent requirements are: high reliability (reliability up to 10-6 level), high availability, packet size up to 256 bytes, time synchronization up to several ⁇ s (depending on the use case, the value 1 ⁇ s or a few ⁇ s depending on the frequency range and latency as low as 0.5 ms to 1 ms (eg, 0.5 ms latency in the targeted user plane).
- NRURLC NR Ultra User Downlink Control Channel
- enhancements for compact DCI PDCCH repetition, and increased PDCCH monitoring.
- enhancement of UCI Uplink Control Information
- enhancement of enhanced HARQ Hybrid Automatic Repeat Request
- minislot refers to a Transmission Time Interval (TTI) containing fewer symbols than a slot (a slot comprises 14 symbols).
- TTI Transmission Time Interval
- the 5G QoS (Quality of Service) model is based on QoS flows, and includes QoS flows that require a guaranteed flow bit rate (GBR: Guaranteed Bit Rate QoS flows), and guaranteed flow bit rates. support any QoS flows that do not exist (non-GBR QoS flows). Therefore, at the NAS level, a QoS flow is the finest granularity of QoS partitioning in a PDU session.
- a QoS flow is identified within a PDU session by a QoS Flow ID (QFI) carried in an encapsulation header over the NG-U interface.
- QFI QoS Flow ID
- 5GC For each UE, 5GC establishes one or more PDU sessions. For each UE, in line with the PDU session, NG-RAN establishes at least one Data Radio Bearers (DRB), eg as shown above with reference to FIG. Also, additional DRBs for QoS flows for that PDU session can be configured later (up to NG-RAN when to configure). NG-RAN maps packets belonging to different PDU sessions to different DRBs. NAS level packet filters in UE and 5GC associate UL and DL packets with QoS flows, while AS level mapping rules in UE and NG-RAN associate UL and DL QoS flows with DRB.
- DRB Data Radio Bearers
- FIG. 22 shows the non-roaming reference architecture of 5G NR (see TS 23.501 v16.1.0, section 4.23).
- An Application Function eg, an external application server hosting 5G services, illustrated in FIG. 21
- Policy Control Function Policy Control Function (PCF) reference.
- Application Functions that are considered operator-trusted, based on their deployment by the operator, can interact directly with the associated Network Function.
- Application Functions that are not authorized by the operator to directly access the Network Function communicate with the associated Network Function using the open framework to the outside world via the NEF.
- Figure 22 shows further functional units of the 5G architecture: Network Slice Selection Function (NSSF), Network Repository Function (NRF), Unified Data Management (UDM), Authentication Server Function (AUSF), Access and Mobility Management Function (AMF) , Session Management Function (SMF), and Data Network (DN, eg, service by operator, Internet access, or service by third party). All or part of the core network functions and application services may be deployed and operated in a cloud computing environment.
- NSF Network Slice Selection Function
- NRF Network Repository Function
- UDM Unified Data Management
- AUSF Authentication Server Function
- AMF Access and Mobility Management Function
- SMSF Session Management Function
- DN Data Network
- QoS requirements for at least one of URLLC, eMMB and mMTC services are set during operation to establish a PDU session including radio bearers between a gNodeB and a UE according to the QoS requirements.
- the functions of the 5GC e.g., NEF, AMF, SMF, PCF, UPF, etc.
- a control circuit that, in operation, serves using the established PDU session;
- An application server eg AF of 5G architecture
- Each functional block used in the description of the above embodiments is partially or wholly realized as an LSI, which is an integrated circuit, and each process described in the above embodiments is partially or wholly implemented as It may be controlled by one LSI or a combination of LSIs.
- An LSI may be composed of individual chips, or may be composed of one chip so as to include some or all of the functional blocks.
- the LSI may have data inputs and outputs.
- LSIs are also called ICs, system LSIs, super LSIs, and ultra LSIs depending on the degree of integration.
- the method of circuit integration is not limited to LSI, and may be realized with a dedicated circuit, a general-purpose processor, or a dedicated processor. Further, an FPGA (Field Programmable Gate Array) that can be programmed after the LSI is manufactured, or a reconfigurable processor that can reconfigure the connections and settings of the circuit cells inside the LSI may be used.
- FPGA Field Programmable Gate Array
- reconfigurable processor that can reconfigure the connections and settings of the circuit cells inside the LSI may be used.
- the present disclosure may be implemented as digital or analog processing.
- a communication device may include a radio transceiver and processing/control circuitry.
- a wireless transceiver may include a receiver section and a transmitter section, or functions thereof.
- a wireless transceiver (transmitter, receiver) may include an RF (Radio Frequency) module and one or more antennas.
- RF modules may include amplifiers, RF modulators/demodulators, or the like.
- Non-limiting examples of communication devices include telephones (mobile phones, smart phones, etc.), tablets, personal computers (PCs) (laptops, desktops, notebooks, etc.), cameras (digital still/video cameras, etc.).
- digital players digital audio/video players, etc.
- wearable devices wearable cameras, smartwatches, tracking devices, etc.
- game consoles digital book readers
- telehealth and telemedicine (remote health care/medicine prescription) devices vehicles or mobile vehicles with communication capabilities (automobiles, planes, ships, etc.), and combinations of the various devices described above.
- Communication equipment is not limited to portable or movable equipment, but any type of equipment, device or system that is non-portable or fixed, e.g. smart home devices (household appliances, lighting equipment, smart meters or measuring instruments, control panels, etc.), vending machines, and any other "Things" that can exist on the IoT (Internet of Things) network.
- smart home devices household appliances, lighting equipment, smart meters or measuring instruments, control panels, etc.
- vending machines and any other "Things” that can exist on the IoT (Internet of Things) network.
- Communication includes data communication by cellular system, wireless LAN system, communication satellite system, etc., as well as data communication by a combination of these.
- Communication apparatus also includes devices such as controllers and sensors that are connected or coupled to communication devices that perform the communication functions described in this disclosure. Examples include controllers and sensors that generate control and data signals used by communication devices to perform the communication functions of the communication device.
- Communication equipment also includes infrastructure equipment, such as base stations, access points, and any other equipment, device, or system that communicates with or controls the various equipment, not limited to those listed above. .
- a communication device includes a control circuit that controls frequency hopping in which transmission is performed at the same frequency position in a plurality of intervals based on transmission intervals set for repeated transmission of a signal; and a transmission circuit for transmitting the signal under control of the frequency hopping.
- control circuit performs channel estimation using at least one slot in the transmission period, with a hopping interval in which the transmission is performed at the same frequency position not set by control information. is applied, the frequency hopping is controlled based on the first slot number relative to the transmission interval.
- control circuit sets the hopping interval to the same value as the slot length in which the channel estimation is performed.
- control circuit if the hopping interval is not set by the control information and the channel estimation is not applied, based on a second slot number that is a physical slot number: , to control said frequency hopping.
- control circuit performs the frequency hopping based on the first slot number when the hopping interval is not set by the control information and the channel estimation is not applied. to control.
- the control circuit when the hopping interval is set by the control information, sets the hopping interval based on the control information, The frequency hopping is controlled based on the slot number of .
- the control circuit determines the Control frequency hopping.
- values that can be set for each of the hopping interval in which the transmission is performed at the same frequency position and the interval length in which channel estimation is performed in the transmission interval include slot Contains the values supported by the parameters for the period setting format.
- possible values for each of the hopping interval and the interval length include 0.5ms, 0.625ms, 1ms, 1.25ms, 2ms, 2.5ms, 3ms, 4ms, 5ms. and 10ms.
- the control circuit sets the hopping pattern in the frequency hopping to: Set to the prescribed pattern.
- the prescribed pattern is a hopping pattern determined based on the physical slot number.
- the prescribed pattern is a hopping pattern determined based on relative slot numbers for the transmission period.
- a communication device includes a control circuit that controls frequency hopping in which transmission is performed at the same frequency position in a plurality of intervals based on transmission intervals set for repeated transmission of a signal; , and a receiver circuit for receiving the signal under control of the frequency hopping.
- a communication device controls frequency hopping in which transmission is performed at the same frequency position in a plurality of intervals based on transmission intervals set for repeated transmission of signals. and transmit the signal according to the control of the frequency hopping.
- a communication device controls frequency hopping in which transmission is performed at the same frequency position in a plurality of intervals based on transmission intervals set for repeated transmission of signals. and receive the signal according to the control of the frequency hopping.
- An embodiment of the present disclosure is useful for wireless communication systems.
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Abstract
Description
NRでは、例えば、端末(例えば、User Equipment(UE)とも呼ぶ)は、基地局(例えば、gNBとも呼ぶ)からの下りリンク制御チャネル(例えば、PDCCH:Physical Downlink Control Channel)において送信される物理層(レイヤ1)の下りリンク制御信号(例えば、DCI:Downlink Control Information)、及び、レイヤ3に対応するRadio Resource Control(RRC)の少なくとも一つによって指示されるリソース割当に従って、データを送受信する(例えば、非特許文献3~7を参照)。
NRの上りリンク送信では、複数のスロットを用いてPUSCH又はPUCCHを送信する方法(Repetition又は繰り返し送信とも呼ぶ)がサポートされる。Repetitionが適用される場合、PUSCHを送信する時間領域リソースに関する情報又はPUCCHリソースに関する情報に、Repetition回数に関する情報が含まれてよい。
例えば、カバレッジ拡張が行われ得るような通信環境、例えば、信号電力対雑音電力比(SNR:Signal-to-Noise power Ratio)、又は、信号電力対干渉+雑音電力比(SINR:Signal-to-Interference plus Noise power Ratio)が、より低い通信環境においては、チャネル推定精度は劣化しやすい。
条件(2-1):actual TDWがconfigured TDWの区間内の最後のPUSCH送信又はPUCCH送信に達する。
条件(2-2):送信信号の送信電力に対する一貫性又は位相連続性を破るイベントが発生する。
カバレッジを改善するための技術として、周波数ホッピングの適用も求められる。NR Rel.15/16では、Repetition送信におけるスロット間周波数ホッピング技術として、2つのリソースブロック(RB:Resource Block)位置を設定し、PUSCH又はPUCCHの信号を送信するRB位置をスロット毎に切り替える方法が適用される(例えば、非特許文献5又は6を参照)。
[通信システムの概要]
本開示の各実施の形態に係る通信システムは、基地局100及び端末200を備える。
図9は、実施の形態1に係る基地局100の構成例を示すブロック図である。図9において、基地局100は、制御部101と、上位制御信号生成部102と、下りリンク制御情報生成部103と、符号化部104と、変調部105と、信号割当部106と、送信部107と、受信部108と、抽出部109と、復調部110と、復号部111と、を有する。
図10は、本開示の一実施例に係る端末200の構成例を示すブロック図である。例えば、図10において、端末200は、受信部201と、抽出部202と、復調部203と、復号部204と、制御部205と、符号化部206と、変調部207と、信号割当部208と、送信部209と、を有する。
以上の構成を有する基地局100及び端末200における動作例について説明する。
端末200は、例えば、以下のような周波数ホッピングに関する情報を設定(又は、通知)されてよい。
端末200は、例えば、スロット間周波数ホッピングに関する上位レイヤパラメータ(例えば、「interslotFrequencyHopping」)を設定され得る。ここで、interslotFrequencyHoppingは、異なるスロットにおいてPUCCH送信を行うスロット間周波数ホッピングを適用するか否か(例えば、enabled又はdisabled)を指示するパラメータである。
本実施の形態に係る基地局及び端末の構成は、実施の形態1に係る基地局100及び端末200の構成と同様でよい。
端末200は、例えば、以下のような周波数ホッピングに関する情報を設定(又は、通知)されてよい。
端末200は、例えば、スロット間周波数ホッピングに関する上位レイヤパラメータ(例えば、interslotFrequencyHopping)を設定され得る。ここで、interslotFrequencyHoppingは、スロット間周波数ホッピングを適用するか否か(例えば、enabled又はdisabled)を指示するパラメータである。
本実施の形態に係る基地局及び端末の構成は、実施の形態1又は実施の形態2に係る基地局100及び端末200の構成と同様でよい。
(1)上述した実施の形態において、PUCCH及びPUSCHのそれぞれに適用する実施の形態を異ならせてもよい。例えば、PUSCHに対して実施の形態1を適用し、PUCCHに対して実施の形態2を適用してもよい。また、例えば、PUSCH及びPUCCHの何れか一方のチャネルに対して上述した実施の形態の何れかを適用し、PUSCH及びPUCCHの他方のチャネルに対しては、上述した実施の形態を適用せずに、デフォルトのスロット間周波数ホッピングパターンを適用してもよい。例えば、デフォルトのスロット間周波数ホッピングパターンは、物理スロット番号に基づいて決定される周波数ホッピングパターンでもよく、相対的なスロット番号に基づいて決定される周波数ホッピングパターンでもよい。
上述した各実施の形態及び各変形例に示した機能、動作又は処理を端末200がサポートするか否かを示す情報が、例えば、端末200の能力(capability)情報あるいは能力パラメータとして、端末200から基地局100へ送信(あるいは通知)されてもよい。
本開示において、本開示に関連する下り制御信号(情報)は、物理層のPDCCHで送信される信号(情報)でもよく、上位レイヤのMAC CE(Control Element)又はRRCで送信される信号(情報)でもよい。また、下り制御信号は、予め規定されている信号(情報)としてもよい。
本開示において、基地局は、TRP(Transmission Reception Point)、クラスタヘッド、アクセスポイント、RRH(Remote Radio Head)、eNodeB (eNB)、gNodeB(gNB)、BS(Base Station)、BTS(Base Transceiver Station)、親機、ゲートウェイ等でもよい。また、サイドリンク通信においては、端末が、基地局の役割を担ってもよい。基地局は、上位ノードと端末の通信を中継する中継装置であってもよい。また、基地局は、路側器であってもよい。
本開示は、上りリンク、下りリンク、サイドリンクのいずれに適用してもよい。例えば、本開示を上りリンクのPUSCH、PUCCH、PRACH、下りリンクのPDSCH、PDCCH、PBCH、サイドリンクのPSSCH(Physical Sidelink Shared Channel)、PSCCH(Physical Sidelink Control Channel)、PSBCH(Physical Sidelink Broadcast Channel)に適用してもよい。
本開示は、データチャネル及び制御チャネルのいずれに適用してもよい。例えば、本開示のチャネルをデータチャネルのPDSCH、PUSCH、PSSCH、制御チャネルのPDCCH、PUCCH、PBCH、PSCCH、PSBCHに置き換えてもよい。
本開示において、参照信号は、基地局及び端末の双方で既知の信号であり、RS (Reference Signal)又はパイロット信号と呼ばれることもある。参照信号は、DMRS、CSI-RS(Channel State Information - Reference Signal)、TRS(Tracking Reference Signal)、PTRS(Phase Tracking Reference Signal)、CRS(Cell-specific Reference Signal), SRS(Sounding Reference Signal)のいずれかであってもよい。
本開示において、時間リソースの単位は、スロット及びシンボルの1つ又は組み合わせに限らず、例えば、フレーム、スーパーフレーム、サブフレーム、スロット、タイムスロット、サブスロット、ミニスロット又は、シンボル、OFDM(Orthogonal Frequency Division Multiplexing)シンボル、SC-FDMA(Single Carrier - Frequency Division Multiple Access)シンボルといった時間リソース単位でもよく、他の時間リソース単位でもよい。また、1スロットに含まれるシンボル数は、上述した実施の形態において例示したシンボル数に限定されず、他のシンボル数でもよい。
本開示は、ライセンスバンド、アンライセンスバンドのいずれに適用してもよい。
本開示は、基地局と端末との間の通信(Uuリンク通信)、端末と端末との間の通信(Sidelink通信)、V2X(Vehicle to Everything)の通信のいずれに適用してもよい。例えば、本開示のチャネルをPSCCH、PSSCH、PSFCH(Physical Sidelink Feedback Channel)、PSBCH、PDCCH、PUCCH、PDSCH、PUSCH、PBCHに置き換えてもよい。
アンテナポートは、1本または複数の物理アンテナから構成される論理的なアンテナ(アンテナグループ)を指す。すなわち、アンテナポートは必ずしも1本の物理アンテナを指すとは限らず、複数のアンテナから構成されるアレイアンテナ等を指すことがある。例えば、アンテナポートが何本の物理アンテナから構成されるかは規定されず、端末が参照信号(Reference signal)を送信できる最小単位として規定される。また、アンテナポートはプリコーディングベクトル(Precoding vector)の重み付けを乗算する最小単位として規定されることもある。
3GPPは、100GHzまでの周波数範囲で動作する新無線アクセス技術(NR)の開発を含む第5世代携帯電話技術(単に「5G」ともいう)の次のリリースに向けて作業を続けている。5G規格の初版は2017年の終わりに完成しており、これにより、5G
NRの規格に準拠した端末(例えば、スマートフォン)の試作および商用展開に移ることが可能である。
図19は、NG-RANと5GCとの間の機能分離を示す。NG-RANの論理ノードは、gNBまたはng-eNBである。5GCは、論理ノードAMF、UPF、およびSMFを有する。
- 無線ベアラ制御(Radio Bearer Control)、無線アドミッション制御(Radio Admission Control)、接続モビリティ制御(Connection Mobility Control)、上りリンクおよび下りリンクの両方におけるリソースのUEへの動的割当(スケジューリング)等の無線リソース管理(Radio Resource Management)の機能;
- データのIPヘッダ圧縮、暗号化、および完全性保護;
- UEが提供する情報からAMFへのルーティングを決定することができない場合のUEのアタッチ時のAMFの選択;
- UPFに向けたユーザプレーンデータのルーティング;
- AMFに向けた制御プレーン情報のルーティング;
- 接続のセットアップおよび解除;
- ページングメッセージのスケジューリングおよび送信;
- システム報知情報(AMFまたは運用管理保守機能(OAM:Operation、 Admission、 Maintenance)が発信源)のスケジューリングおよび送信;
- モビリティおよびスケジューリングのための測定および測定報告の設定;
- 上りリンクにおけるトランスポートレベルのパケットマーキング;
- セッション管理;
- ネットワークスライシングのサポート;
- QoSフローの管理およびデータ無線ベアラに対するマッピング;
- RRC_INACTIVE状態のUEのサポート;
- NASメッセージの配信機能;
- 無線アクセスネットワークの共有;
- デュアルコネクティビティ;
- NRとE-UTRAとの緊密な連携。
- Non-Access Stratum(NAS)シグナリングを終端させる機能;
- NASシグナリングのセキュリティ;
- Access Stratum(AS)のセキュリティ制御;
- 3GPPのアクセスネットワーク間でのモビリティのためのコアネットワーク(CN:Core Network)ノード間シグナリング;
- アイドルモードのUEへの到達可能性(ページングの再送信の制御および実行を含む);
- 登録エリアの管理;
- システム内モビリティおよびシステム間モビリティのサポート;
- アクセス認証;
- ローミング権限のチェックを含むアクセス承認;
- モビリティ管理制御(加入およびポリシー);
- ネットワークスライシングのサポート;
- Session Management Function(SMF)の選択。
- intra-RATモビリティ/inter-RATモビリティ(適用可能な場合)のためのアンカーポイント;
- データネットワークとの相互接続のための外部PDU(Protocol Data Unit)セッションポイント;
- パケットのルーティングおよび転送;
- パケット検査およびユーザプレーン部分のポリシールールの強制(Policy rule enforcement);
- トラフィック使用量の報告;
- データネットワークへのトラフィックフローのルーティングをサポートするための上りリンククラス分類(uplink classifier);
- マルチホームPDUセッション(multi-homed PDU session)をサポートするための分岐点(Branching Point);
- ユーザプレーンに対するQoS処理(例えば、パケットフィルタリング、ゲーティング(gating)、UL/DLレート制御(UL/DL rate enforcement);
- 上りリンクトラフィックの検証(SDFのQoSフローに対するマッピング);
- 下りリンクパケットのバッファリングおよび下りリンクデータ通知のトリガ機能。
- セッション管理;
- UEに対するIPアドレスの割当および管理;
- UPFの選択および制御;
- 適切な宛先にトラフィックをルーティングするためのUser Plane Function(UPF)におけるトラフィックステアリング(traffic steering)の設定機能;
- 制御部分のポリシーの強制およびQoS;
- 下りリンクデータの通知。
図20は、NAS部分の、UEがRRC_IDLEからRRC_CONNECTEDに移行する際のUE、gNB、およびAMF(5GCエンティティ)の間のやり取りのいくつかを示す(TS 38.300 v15.6.0参照)。
図21は、5G NRのためのユースケースのいくつかを示す。3rd generation partnership project new radio(3GPP NR)では、多種多様なサービスおよびアプリケーションをサポートすることがIMT-2020によって構想されていた3つのユースケースが検討されている。大容量・高速通信(eMBB:enhanced mobile-broadband)のための第一段階の仕様の策定が終了している。現在および将来の作業には、eMBBのサポートを拡充していくことに加えて、高信頼・超低遅延通信(URLLC:ultra-reliable and low-latency communications)および多数同時接続マシンタイプ通信(mMTC:massive machine-type communicationsのための標準化が含まれる。図21は、2020年以降のIMTの構想上の利用シナリオのいくつかの例を示す(例えばITU-R M.2083 図2参照)。
5GのQoS(Quality of Service)モデルは、QoSフローに基づいており、保証されたフロービットレートが求められるQoSフロー(GBR:Guaranteed Bit Rate QoSフロー)、および、保証されたフロービットレートが求められないQoSフロー(非GBR QoSフロー)をいずれもサポートする。したがって、NASレベルでは、QoSフローは、PDUセッションにおける最も微細な粒度のQoSの区分である。QoSフローは、NG-Uインタフェースを介してカプセル化ヘッダ(encapsulation header)において搬送されるQoSフローID(QFI:QoS Flow ID)によってPDUセッション内で特定される。
101、205 制御部
102 上位制御信号生成部
103 下りリンク制御情報生成部
104、206 符号化部
105、207 変調部
106、208 信号割当部
107、209 送信部
108、201 受信部
109、202 抽出部
110、203 復調部
111、204 復号部
200 端末
Claims (15)
- 信号の繰り返し送信に対して設定される送信区間に基づいて、複数区間において同一周波数位置で送信を行う周波数ホッピングを制御する制御回路と、
前記周波数ホッピングの制御に従って、前記信号を送信する送信回路と、
を具備する通信装置。 - 前記制御回路は、前記同一周波数位置で前記送信が行われるホッピング間隔が制御情報によって設定されず、前記送信区間内の少なくとも一つのスロットを用いるチャネル推定が適用される場合、前記送信区間に対する相対的な第1のスロット番号に基づいて、前記周波数ホッピングを制御する、
請求項1に記載の通信装置。 - 前記制御回路は、前記ホッピング間隔を、前記チャネル推定が行われるスロット長と同一の値に設定する、
請求項2に記載の通信装置。 - 前記制御回路は、前記ホッピング間隔が前記制御情報によって設定されず、前記チャネル推定が適用されない場合、物理スロット番号である第2のスロット番号に基づいて、前記周波数ホッピングを制御する、
請求項2に記載の通信装置。 - 前記制御回路は、前記ホッピング間隔が前記制御情報によって設定されず、前記チャネル推定が適用されない場合、前記第1のスロット番号に基づいて、前記周波数ホッピングを制御する、
請求項2に記載の通信装置。 - 前記制御回路は、前記ホッピング間隔が前記制御情報によって設定される場合、前記制御情報に基づいて前記ホッピング間隔を設定し、物理スロット番号である第2のスロット番号に基づいて、前記周波数ホッピングを制御する、
請求項2に記載の通信装置。 - 前記制御回路は、前記送信区間内の少なくとも一つの区間を用いるチャネル推定が適用される場合、前記送信区間に対する相対的なスロット番号に基づいて、前記周波数ホッピングを制御する、
請求項1に記載の通信装置。 - 前記同一周波数位置で前記送信が行われるホッピング間隔、及び、前記送信区間内においてチャネル推定が行われる区間長のそれぞれに設定可能な値には、スロットフォーマットを設定する周期に関するパラメータに設定可能な値が含まれる、
請求項1に記載の通信装置。 - 前記ホッピング間隔及び前記区間長のそれぞれに設定可能な値には、0.5ms、0.625ms、1ms、1.25ms、2ms、2.5ms、3ms、4ms、5ms及び10msの少なくとも一つが含まれる、
請求項8に記載の通信装置。 - 前記制御回路は、前記ホッピング間隔及び前記区間長の双方が、前記パラメータに設定可能な値の何れかと同一の場合、前記周波数ホッピングにおけるホッピングパターンを、規定のパターンに設定する、
請求項8に記載の通信装置。 - 前記規定のパターンは、物理スロット番号に基づいて決定されるホッピングパターンである、
請求項10に記載の通信装置。 - 前記規定のパターンは、前記送信区間に対する相対的なスロット番号に基づいて決定されるホッピングパターンである、
請求項10に記載の通信装置。 - 信号の繰り返し送信に対して設定される送信区間に基づいて、複数区間において同一周波数位置で送信を行う周波数ホッピングを制御する制御回路と、
前記周波数ホッピングの制御に従って、前記信号を受信する受信回路と、
を具備する通信装置。 - 通信装置は、
信号の繰り返し送信に対して設定される送信区間に基づいて、複数区間において同一周波数位置で送信を行う周波数ホッピングを制御し、
前記周波数ホッピングの制御に従って、前記信号を送信する、
通信方法。 - 通信装置は、
信号の繰り返し送信に対して設定される送信区間に基づいて、複数区間において同一周波数位置で送信を行う周波数ホッピングを制御し、
前記周波数ホッピングの制御に従って、前記信号を受信する、
通信方法。
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- 2022-09-15 US US18/716,742 patent/US20250039852A1/en active Pending
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| WO2025037408A1 (ja) * | 2023-08-16 | 2025-02-20 | 株式会社Nttドコモ | 端末 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN118435682A (zh) | 2024-08-02 |
| EP4456641A4 (en) | 2025-04-23 |
| JPWO2023119756A1 (ja) | 2023-06-29 |
| EP4456641A1 (en) | 2024-10-30 |
| US20250039852A1 (en) | 2025-01-30 |
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