WO2022137559A1 - 端末及び無線通信方法 - Google Patents
端末及び無線通信方法 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
- H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
- H04W72/569—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient of the traffic information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
Definitions
- This disclosure relates to terminals and wireless communication methods that support multiplexing of uplink traffic.
- the 3rd Generation Partnership Project (3GPP) specifies the 5th generation mobile communication system (also called 5G, New Radio (NR) or Next Generation (NG)), and next-generation specifications called Beyond 5G, 5G Evolution or 6G. We are also proceeding with the conversion.
- 5G New Radio
- NG Next Generation
- DCI Downlink Control Information
- Non-Patent Document 1 UL traffic having different priorities should be multiplexed within the terminal (User Equipment, UE) (for example, Non-Patent Document 1).
- UL channels for example, PUCCH (Physical Uplink Control Channel), uplink control channel
- UL channels for example, PUCCH (Physical Uplink Control Channel), uplink control channel
- Cancel display (UL Cancel Indication (CI)
- dynamic slot format display (Slot Format Indication (SFI)
- DL semi-static downlink
- SSB synchronization signal block
- the following disclosure was made in view of such a situation, and even if it overlaps with the radio resource by other display such as UL CI, the multiplexing of UL traffic having a different priority is more surely performed.
- the purpose is to provide a feasible terminal and wireless communication method.
- control unit 270 that executes multiplexing processing of a first traffic having a first priority and a second traffic having a second priority different from the first priority.
- the control unit includes a transmission unit (radio signal transmission / reception unit 210) for transmitting a multiplexing result in which the first traffic and the second traffic are multiplexed, and the control unit transmits the multiplexing result in the multiplexing process.
- a terminal (UE200) that cancels uplink transmissions that use duplicate radio resources.
- FIG. 1 is an overall schematic configuration diagram of the wireless communication system 10.
- FIG. 2 is a diagram showing a configuration example of a wireless frame, a subframe, and a slot used in the wireless communication system 10.
- FIG. 3 is a functional block configuration diagram of the UE 200.
- FIG. 4 is a diagram showing an example of UL CI Scheme.
- FIG. 5 is a diagram showing a sequence example regarding cancellation of Intra-UE multiplexing and UL transmission between the UE 200 and the network (NG-RAN20).
- FIG. 6 is a diagram showing an example of canceling Intra-UE multiplexing and UL transmission according to operation example 1.
- FIG. 7 is a diagram showing an example of canceling Intra-UE multiplexing and UL transmission according to operation example 2.
- FIG. 1 is an overall schematic configuration diagram of the wireless communication system 10.
- FIG. 2 is a diagram showing a configuration example of a wireless frame, a subframe, and a slot used in the wireless communication system 10.
- FIG. 3 is a functional
- FIG. 8 is a diagram showing an example of canceling Intra-UE multiplexing and UL transmission according to operation example 3.
- FIG. 9 is a diagram showing an example of canceling Intra-UE multiplexing and UL transmission according to the operation example 4.
- FIG. 10 is a diagram showing an example of the hardware configuration of gNB100 and UE200.
- FIG. 1 is an overall schematic configuration diagram of the wireless communication system 10 according to the present embodiment.
- the wireless communication system 10 is a wireless communication system according to 5G New Radio (NR), and includes the Next Generation-Radio Access Network 20 (hereinafter, NG-RAN20, and the user terminal 200 (hereinafter, UE200)). ..
- NR 5G New Radio
- NG-RAN20 Next Generation-Radio Access Network
- UE200 user terminal 200
- NG-RAN20 includes a wireless base station 100 (hereinafter, gNB100).
- gNB100 wireless base station 100
- the specific configuration of the wireless communication system 10 including the number of gNBs and UEs is not limited to the example shown in FIG.
- NG-RAN20 actually includes multiple NG-RANNodes, specifically gNB (or ng-eNB), and is connected to a core network (5GC, not shown) according to 5G.
- NG-RAN20 and 5GC may be simply expressed as "network”.
- GNB100 is a wireless base station that complies with NR, and executes wireless communication according to UE200 and NR.
- gNB100 and UE200 are Massive MIMO that generates a beam with higher directivity by controlling radio signals transmitted from multiple antenna elements, carrier aggregation (CA) that uses multiple component carriers (CC) in a bundle, and It can also support dual connectivity (DC) that communicates simultaneously between the UE and multiple NG-RAN Nodes.
- Massive MIMO that generates a beam with higher directivity by controlling radio signals transmitted from multiple antenna elements
- CA carrier aggregation
- CC component carriers
- DC dual connectivity
- Wireless communication system 10 corresponds to FR1 and FR2.
- the frequency bands of each FR are as follows.
- FR1 410 MHz to 7.125 GHz
- FR2 24.25 GHz to 52.6 GHz
- SCS Sub-Carrier Spacing
- BW bandwidth
- FR2 has a higher frequency than FR1, and SCS of 60 or 120 kHz (240 kHz may be included) is used, and a bandwidth (BW) of 50 to 400 MHz may be used.
- the wireless communication system 10 may support a higher frequency band than the frequency band of FR2. Specifically, the wireless communication system 10 can support a frequency band exceeding 52.6 GHz and up to 114.25 GHz.
- Cyclic Prefix-Orthogonal Frequency Division Multiplexing CP-OFDM
- DFT-S-OFDM Discrete Fourier Transform-Spread
- SCS Sub-Carrier Spacing
- DFT-S-OFDM may be applied not only to the uplink (UL) but also to the downlink (DL).
- FIG. 2 shows a configuration example of a wireless frame, a subframe, and a slot used in the wireless communication system 10.
- one slot is composed of 14 symbols, and the larger (wider) the SCS, the shorter the symbol period (and slot period).
- the number of symbols constituting one slot does not necessarily have to be 14 symbols (for example, 28, 56 symbols).
- the number of slots per subframe may differ depending on the SCS.
- the SCS may be wider than 240 kHz (eg, 480 kHz, 960 kHz, as shown in FIG. 3).
- the time direction (t) shown in FIG. 2 may be referred to as a time domain, a symbol period, a symbol time, or the like.
- the frequency direction may be referred to as a frequency domain, a resource block, a subcarrier, a BWP (Bandwidth part), or the like.
- DCI Downlink Control Information
- DCI may be interpreted as control information transmitted on the downlink, including scheduling information, data modulation, and channel code rate information required for each user (UE) to demodulate the data.
- DCI format 2_4 may be used in order to secure (preempt) the high priority uplink (UL) transmission and cancel the low priority UL transmission.
- DCI format 2_4 may be used to notify the group of UEs of the physical resource block (PRB) and OFDM symbols that cancel the corresponding UL transmission from the UE 200. That is, DCI format 2_4 may be interpreted as a format for notifying the PRB and OFDM symbols that have canceled UL transmission. Note that cancellation may be read as cancellation, suspension, cancellation, or the like.
- PRB physical resource block
- DCI format 2_4 may be displayed in the following format.
- Cancellation indication 1 Cancellation indication 2,..., Cancellation indication N UE200 sends UL based on UL's Cancellation Indication (may be called UL CI) indicated by DCI format 2_4, specifically PUSCH (Physical Uplink Shared Channel) or Sounding Reference Signal. You can cancel transmissions such as (SRS). In addition, PUCCH (Physical Uplink Control Channel) may be canceled by UL CI.
- UL CI Physical Uplink Shared Channel
- SRS Sounding Reference Signal
- the wireless communication system 10 may support multiplexing (Intra-UE multiplexing) of UL traffic having different priorities within the UE 200. Specifically, the UE 200 multiplexes low priority (LP) traffic and high priority (HP) traffic, and transmits the result of multiplexing the traffic (multiplexed result) via UL. can.
- LP low priority
- HP high priority
- Traffic may be read as channel, data channel, control channel, path, data, control data, and the like. Further, LP may be expressed as a first priority and HP may be expressed as a second priority (or vice versa). Multiple results may be read as outcome, outcome, outcome or output. A specific operation example of Intra-UE multiplexing will be described later.
- FIG. 3 is a functional block configuration diagram of UE200.
- the UE 200 includes a radio signal transmission / reception unit 210, an amplifier unit 220, a modulation / demodulation unit 230, a control signal / reference signal processing unit 240, a coding / decoding unit 250, a data transmission / reception unit 260, and a control unit 270.
- the gNB100 radio base station
- the radio signal transmission / reception unit 210 transmits / receives a radio signal according to NR.
- the radio signal transmission / reception unit 210 corresponds to Massive MIMO, a CA that bundles a plurality of CCs, and a DC that simultaneously communicates between the UE and each of the two NG-RAN Nodes.
- the radio signal transmission / reception unit 210 can transmit UL traffic having different priorities via a predetermined UL channel.
- the radio signal transmitter / receiver 210 can transmit a multiplexed result in which low priority (LP) traffic (first traffic) and high priority (HP) traffic (second traffic) are multiplexed. ..
- the radio signal transmission / reception unit 210 constitutes a transmission unit.
- the amplifier unit 220 is composed of PA (Power Amplifier) / LNA (Low Noise Amplifier) and the like.
- the amplifier unit 220 amplifies the signal output from the modulation / demodulation unit 230 to a predetermined power level. Further, the amplifier unit 220 amplifies the RF signal output from the radio signal transmission / reception unit 210.
- the modulation / demodulation unit 230 executes data modulation / demodulation, transmission power setting, resource block allocation, etc. for each predetermined communication destination (gNB100, etc.).
- Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM) / Discrete Fourier Transform-Spread (DFT-S-OFDM) may be applied to the modulation / demodulation unit 230. Further, the DFT-S-OFDM may be used not only for the uplink (UL) but also for the downlink (DL).
- the control signal / reference signal processing unit 240 executes processing related to various control signals transmitted / received by the UE 200 and processing related to various reference signals transmitted / received by the UE 200.
- control signal / reference signal processing unit 240 receives various control signals transmitted from the gNB 100 via a predetermined control channel, for example, control signals of the radio resource control layer (RRC). Further, the control signal / reference signal processing unit 240 transmits various control signals to the gNB 100 via a predetermined control channel.
- a predetermined control channel for example, control signals of the radio resource control layer (RRC).
- RRC radio resource control layer
- the control signal / reference signal processing unit 240 executes processing using a reference signal (RS) such as Demodulation Reference Signal (DMRS) and Phase Tracking Reference Signal (PTRS).
- RS reference signal
- DMRS Demodulation Reference Signal
- PTRS Phase Tracking Reference Signal
- DMRS is a reference signal (pilot signal) known between the base station and the terminal of each terminal for estimating the fading channel used for data demodulation.
- PTRS is a terminal-specific reference signal for the purpose of estimating phase noise, which is a problem in high frequency bands.
- the reference signal may include ChannelStateInformation-ReferenceSignal (CSI-RS), SoundingReferenceSignal (SRS), PositioningReferenceSignal (PRS) for position information, and the like. ..
- CSI-RS ChannelStateInformation-ReferenceSignal
- SRS SoundingReferenceSignal
- PRS PositioningReferenceSignal
- control channels include PDCCH (Physical Downlink Control Channel), PUCCH (Physical Uplink Control Channel), RACH (Random Access Channel, Random Access Radio Network Temporary Identifier (RA-RNTI), Downlink Control Information (DCI)), and Physical. Broadcast Channel (PBCH) etc. may be included.
- PDCCH Physical Downlink Control Channel
- PUCCH Physical Uplink Control Channel
- RACH Random Access Channel
- RA-RNTI Random Access Radio Network Temporary Identifier
- DCI Downlink Control Information
- PBCH Broadcast Channel
- the data channels include PDSCH (Physical Downlink Shared Channel) and PUSCH (Physical Uplink Shared Channel). Data may mean data transmitted over a data channel.
- PDSCH Physical Downlink Shared Channel
- PUSCH Physical Uplink Shared Channel
- PUCCH may be interpreted as a UL physical channel used for UCI (Uplink Control Information) transmission.
- UCI can be transmitted by either PUCCH or PUSCH depending on the situation. Note that DCI may always be transmitted via PDCCH and may not be transmitted via PDSCH.
- UCI may include at least one of hybrid ARQ (HARQ: Hybrid automatic repeat request) ACK / NACK, scheduling request (SR) from UE200, and Channel State Information (CSI).
- HARQ Hybrid automatic repeat request
- SR scheduling request
- CSI Channel State Information
- timing and radio resources for transmitting PUCCH may be controlled by DCI as in the data channel.
- the coding / decoding unit 250 executes data division / concatenation and channel coding / decoding for each predetermined communication destination (gNB100 or other gNB).
- the coding / decoding unit 250 divides the data output from the data transmission / reception unit 260 into predetermined sizes, and executes channel coding for the divided data. Further, the coding / decoding unit 250 decodes the data output from the modulation / demodulation unit 230 and concatenates the decoded data.
- the data transmission / reception unit 260 executes transmission / reception of Protocol Data Unit (PDU) and Service Data Unit (SDU).
- the data transmitter / receiver 260 is a PDU / SDU in a plurality of layers (such as a medium access control layer (MAC), a radio link control layer (RLC), and a packet data convergence protocol layer (PDCP)). Assemble / disassemble the.
- the data transmission / reception unit 260 executes data error correction and retransmission control based on the hybrid ARQ (Hybrid automatic repeat request).
- the control unit 270 controls each functional block constituting the UE 200.
- the control unit 270 can execute UL traffic multiplexing processing having different priorities.
- control unit 270 has a traffic having a low priority (first priority) (first traffic) and a high priority higher than the low priority (second priority different from the first priority). It is possible to execute the multiplexing process with the traffic (second traffic) having (may be expressed as priority). Note that multiplexing may be read as a term such as multiplexing, composition or superimposition. Further, as described above, the traffic may be read as a channel, a data channel, a control channel, a path, data, control data, or the like.
- the control unit 270 multiplexes a plurality of low priority (LP) traffic (first traffic) and multiplex high priority (HP) traffic (second traffic), and the plurality of LP traffic is multiplexed.
- the multiplex result (first multiplex result) and the multiplex result in which a plurality of HP traffics are multiplexed (second multiplex result) may be further multiplexed.
- control unit 270 may generate a multiplex result by multiplexing one or more LP traffic and one or more HP traffic.
- control unit 270 may generate a multiplex result by multiplexing a plurality of LP traffics, and may generate a multiplex result by multiplexing the multiplex result with one or a plurality of HP traffics. Conversely, the control unit 270 may generate a multiplex result by multiplexing a plurality of HP traffic, and may generate a multiplex result by multiplexing the multiplex result with one or more LP traffic.
- the method of multiplexing LP traffic and HP traffic is not limited to these methods.
- the control unit 270 executes a plurality of processes for multiplexing one or a plurality of LP traffics and one or a plurality of HP traffics, and further multiplexes the plurality of multiplex results in a hierarchical multiplexing process. May be executed. Further, the number of layers of multiplexing processing may be larger.
- control unit 270 may cancel the uplink transmission using the radio resource that overlaps with the transmission of the multiplexing result in the multiplexing process. Specifically, the control unit 270 can execute control regarding cancellation of uplink transmission (UL transmission) based on ULCI.
- UL transmission uplink transmission
- control unit 270 may cancel the PUSCH that overlaps with the transmission of the multiple result.
- the uplink transmission may include a reference signal such as SRS.
- PUCCH may be subject to cancellation.
- the control unit 270 may cancel the UL transmission in any layer of the above-mentioned multiplexing process. For example, the control unit 270 may cancel the UL transmission before multiplexing the plurality of LP traffic and / or the plurality of HP traffic.
- control unit 270 has a multiplex result in which a plurality of LP traffics are multiplexed (first multiplex result) and a multiplex result in which a plurality of HP traffics are multiplexed after the LP traffic and / or the HP traffic is multiplexed (the first multiplex result).
- the UL transmission may be canceled before multiplexing with the second multiplex result).
- control unit 270 cancels the UL transmission after multiplexing the multiplex result (first multiplex result) in which a plurality of LP traffics are multiplexed and the multiplex result (second multiplex result) in which a plurality of HP traffics are multiplexed. You may.
- control unit 270 may cancel UL transmission after multiplexing one or more LP traffic and one or more HP traffic.
- Intra-UE multiplexing of traffic (channels) having the same priority and the priority of traffic (channels) having different priorities may be as follows.
- the radio resource may include a time resource and a frequency resource.
- LP channel and HP channel may be interpreted as synonymous with LP traffic and HP traffic as described above, but in the following, the terms LP channel and HP channel are mainly used.
- SFI SlotFormatIndication
- Intra-UE multiplexing is executed first-Cancellation of UL transmission by UL CI or Dynamic SFI
- processing order of Intra-UE multiplexing and the semi-static downlink (DL) symbol, or The relationship with the synchronization signal block (SSB (SS / PBCH Block)) may be the same as or different from UL CI.
- SSB synchronization signal block
- a quasi-static downlink (DL) symbol may be interpreted as a symbol whose use (for example, UL / DL, always available, etc.) can be changed by setting.
- Figure 4 shows an example of ULCI Scheme.
- DCI format 2_4 may be used in order to secure (preempt) the UL transmission having a high priority and cancel the UL transmission having a low priority.
- the UE200 may follow the conventional processing order (that is, the processing order not including multiplexing) when multiplexing of traffic (channels) having different priorities is not enabled. Further, the UE 200 may follow the conventional processing order even when the multiplexing is enabled but the multiplexing conditions are not satisfied.
- the multiplexing when the multiplexing is enabled, the conditions for multiplexing are satisfied, and the UL channel overlaps with the radio resource indicated by ULCI, DynamicSFI, quasi-static DL symbol, or SSB. , It may operate according to any of the following operation examples.
- the multiplexing process (multiplexing order) between the LP channel and the HP channel may be any of the following.
- Possibility 1 Executes multiplexing processing between channels of the same priority, and then executes multiplexing processing between the LP channel multiplexing result (outcome) and the HP channel multiplexing result.
- Possibility 3 Executes multiplexing processing between LP channels, and then executes multiplexing results of LP channels and multiplexing processing of HP channels.
- Possibility 4 Executes multiplexing processing between HP channels, and then executes multiplexing processing of HP channels and LP channels.
- FIG. 5 shows an example of a sequence relating to cancellation of Intra-UE multiplexing and UL transmission between the UE 200 and the network (NG-RAN20).
- the UE200 can transmit UE capability (which may be called UE Capability Information) indicating the capability of the UE 200 to the network (NG-RAN20).
- the UE 200 may transmit the UE Capability Information in response to receiving an inquiry (UE Capability Inquiry) regarding the capability of the UE 200 from the network.
- the UE capability may include the above-mentioned ability related to Intra-UE multiplexing.
- the capability related to Intra-UE multiplexing may indicate which of the above-mentioned Possibility 1 to 4 multiplexing processes (multiplexing order) is supported.
- the network may send a message of a higher layer (for example, RRC) or DCI to UE200 based on the received UECapabilityInformation.
- the RRC message may include an uplinkCancellationPriority indicating the priority for canceling UL transmission.
- UplinkCancellationPriority is specified in 3GPP TS38.331.
- DCI (for example, DCI format 2_4) may include the same display as uplinkCancellationPriority.
- UplinkCancellationPriority can set the UL transmission cancellation operation when both ULCI and UE priority indicator are set for a specific UE. If the uplinkCancellationPriority field is present, ULCI may only apply to UL transmissions that are shown or set as low priority. On the other hand, if the uplinkCancellationPriority field does not exist, ULCI may be applied to UL transmission regardless of the priority.
- FIG. 6 shows an example of canceling Intra-UE multiplexing and UL transmission according to operation example 1. As shown in FIG. 6, the UE 200 may multiplex a plurality of channels having the same priority.
- UE200 multiplexes multiple LP channels and generates multiple result (LP outcome).
- LP outcome multiple result
- HP outcome multiplex result
- UE200 multiplexes the LP outcome and the HP outcome to generate a multiple result (HP + LP).
- the contents of the LP channel and the HP channel may include HARQ-ACK, scheduling request (SR), Channel State Information (CSI), etc. (same below).
- SR scheduling request
- CSI Channel State Information
- the contents of the LP channel and the HP channel are not limited to these, and other contents may be included.
- the UE200 may cancel the UL transmission when it overlaps with the radio resource indicated by ULCI etc. according to any of the following options.
- UE200 cancels the dedicated channel that overlaps with the radio resource indicated by ULCI after multiplexing with LP outcome and HP outcome.
- the dedicated channel (the LP channel or the HP channel only, or the channel to be canceled including both the LP channel and the HP channel) may be set by the parameters of the upper layer (RRC, etc.), or may be set in advance in the 3GPP specifications. It may be defined. Alternatively, the dedicated channel may be designated by DCI. Further, in the case of RRC, uplinkCancellationPriority may be used to specify the dedicated channel, or a new new parameter may be provided.
- FIG. 7 shows an example of canceling Intra-UE multiplexing and UL transmission according to operation example 2.
- the UE 200 may generate a multiplexing result (HP + LP) by multiplexing one or more LP channels with one or more HP channels.
- the UE200 may cancel the UL transmission when it overlaps with the radio resource indicated by ULCI etc. according to any of the following options.
- the dedicated channel (channel to be canceled including only the LP channel or the HP channel, or both the LP channel and the HP channel) may be set by the parameter of the upper layer (RRC or the like). However, it may be predefined in the 3GPP specifications. Alternatively, the dedicated channel may be designated by DCI. Further, in the case of RRC, uplinkCancellationPriority may be used to specify the dedicated channel, or a new new parameter may be provided.
- FIG. 8 shows an example of canceling Intra-UE multiplexing and UL transmission according to operation example 3.
- the UE 200 generates a multiplex result (LP outcome) by multiplexing a plurality of LP channels, and multiplex results (LP outcome) by multiplexing the multiplex result with one or more HP channels.
- HP + LP may be generated.
- the UE200 may cancel the UL transmission when it overlaps with the radio resource indicated by ULCI etc. according to any of the following options.
- the UE200 has a dedicated channel (dedicated channel, LP channel and LP channel) that overlaps with the radio resource indicated by ULCI before multiplexing the LP channel multiplexing result (LP outcome) with multiple HP channels. / Or cancel the HP channel).
- a dedicated channel dedicated channel, LP channel and LP channel
- the dedicated channel (channel to be canceled including only the LP channel or the HP channel, or both the LP channel and the HP channel) may be set by the parameter of the upper layer (RRC or the like). However, it may be predefined in the 3GPP specifications. Alternatively, the dedicated channel may be designated by DCI. Further, in the case of RRC, uplinkCancellationPriority may be used to specify the dedicated channel, or a new new parameter may be provided.
- FIG. 9 shows an example of canceling Intra-UE multiplexing and UL transmission according to operation example 4.
- the UE 200 generates a multiplex result (HP outcome) by multiplexing a plurality of HP channels, and multiplex results (HP outcome) by multiplexing the multiplex result with one or more LP channels.
- HP + LP may be generated.
- the UE200 may cancel the UL transmission when it overlaps with the radio resource indicated by ULCI etc. according to any of the following options.
- the UE200 has a dedicated channel (dedicated channel, LP channel and LP channel) that overlaps with the radio resource indicated by ULCI before multiplexing the HP channel multiplexing result (HP outcome) with multiple LP channels. / Or cancel the HP channel).
- a dedicated channel dedicated channel, LP channel and LP channel
- the dedicated channel (channel to be canceled including only the LP channel or the HP channel, or both the LP channel and the HP channel) may be set by the parameter of the upper layer (RRC or the like). However, it may be predefined in the 3GPP specifications. Alternatively, the dedicated channel may be designated by DCI. Further, in the case of RRC, uplinkCancellationPriority may be used to specify the dedicated channel, or a new new parameter may be provided.
- UL CI cancellation of UL transmission may be replaced by Dynamic SFI, quasi-static DL symbol, or SSB cancellation.
- UL CI, Dynamic SFI, quasi-static DL symbols, or SSB cancellation may be combined.
- the UL transmission (dedicated channel) cancellation target may include only the LP channel or HP channel, or both the LP channel and the HP channel, but the UL channel to be canceled includes PUCCH and PUCCH. / Or PUSCH may be included.
- ULCI may target only PUSCH or SRS as in 3GPP Release 16 (in this case, there is no effect on the related 3GPP specifications).
- the priority of the PUSCH to be canceled may be set by a parameter of an upper layer (RRC or the like) (for example, the uplinkCancellationPriority described above).
- ULCI may be able to cancel PUCCH in addition to PUSCH and SRS. This can achieve even better spectral efficiency.
- the priority of the PUSCH to be canceled and the PUSCH to be canceled may be set by the parameter (uplinkCancellationPriority) of the upper layer.
- ULCI may be replaced with Dynamic SFI, a quasi-static DL symbol, or cancellation by SSB.
- the UE200 can execute the multiplexing process of the LP channel and the HP channel having a higher priority than the low priority, and in the multiplexing process, the multiplex result (LP outcome, HP outcome, etc.) is transmitted. You can cancel UL transmissions that use radio resources that overlap with.
- the UE200 can realize efficient multiplexing processing even when the transmission of the multiplexing result and the radio resource indicated by ULCI or the like overlap. That is, according to UE200, even in the case of duplication of radio resources due to other displays such as ULCI, it is possible to more reliably realize multiplexing of UL traffic (channel) having different priorities.
- the UE 200 can execute various multiplexing processes of Possibility 1 to 4 described above. Therefore, it is possible to realize an appropriate multiplexing process according to the contents of the LP channel and / or the HP channel, the required conditions, and the like.
- the UE 200 has a multiplexing result in which the plurality of LP channels and / or the plurality of HP channels are multiplexed before and after the multiplexing of the LP channel and / or the HP channel.
- a multiplexing result in which the plurality of LP channels and / or the plurality of HP channels are multiplexed before and after the multiplexing of the LP channel and / or the HP channel.
- the UE200 can cancel the UL transmission at an appropriate multiplexing layer in consideration of the load of the multiplexing process, the influence of the UE200 due to the cancellation of the UL transmission, etc., and can perform efficient operation such as saving power consumption. Can contribute to.
- the wireless communication system 10 may be a wireless communication system according to a method called Beyond 5G, 5G Evolution, or 6G.
- each functional block is realized by any combination of at least one of hardware and software.
- the method of realizing each functional block is not particularly limited. That is, each functional block may be realized using one physically or logically coupled device, or two or more physically or logically separated devices can be directly or indirectly (eg, for example). , Wired, wireless, etc.) and may be realized using these plurality of devices.
- the functional block may be realized by combining the software with the one device or the plurality of devices.
- Functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, and assumption. Broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but limited to these I can't.
- a functional block (configuration unit) that makes transmission function is called a transmitting unit (transmitting unit) or a transmitter (transmitter).
- the realization method is not particularly limited.
- FIG. 10 is a diagram showing an example of the hardware configuration of the device.
- the device may be configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like.
- the word “device” can be read as a circuit, device, unit, etc.
- the hardware configuration of the device may be configured to include one or more of each of the devices shown in the figure, or may be configured not to include some of the devices.
- Each functional block of the device (see FIG. 3) is realized by any hardware element of the computer device or a combination of the hardware elements.
- each function in the device is such that the processor 1001 performs an operation by loading predetermined software (program) on the hardware such as the processor 1001 and the memory 1002, and controls the communication by the communication device 1004, or the memory. It is realized by controlling at least one of reading and writing of data in 1002 and storage 1003.
- predetermined software program
- Processor 1001 operates, for example, an operating system to control the entire computer.
- the processor 1001 may be configured by a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, and the like.
- CPU central processing unit
- the processor 1001 reads a program (program code), a software module, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002, and executes various processes according to these.
- a program program code
- a program that causes a computer to execute at least a part of the operations described in the above-described embodiment is used.
- the various processes described above may be executed by one processor 1001 or may be executed simultaneously or sequentially by two or more processors 1001.
- Processor 1001 may be implemented by one or more chips.
- the program may be transmitted from the network via a telecommunication line.
- the memory 1002 is a computer-readable recording medium, and is composed of at least one such as ReadOnlyMemory (ROM), ErasableProgrammableROM (EPROM), Electrically ErasableProgrammableROM (EEPROM), and RandomAccessMemory (RAM). May be done.
- the memory 1002 may be referred to as a register, a cache, a main memory (main storage device), or the like.
- the memory 1002 can store a program (program code), a software module, or the like that can execute the method according to the embodiment of the present disclosure.
- the storage 1003 is a computer-readable recording medium, for example, an optical disk such as Compact Disc ROM (CD-ROM), a hard disk drive, a flexible disk, an optical magnetic disk (for example, a compact disk, a digital versatile disk, or a Blu-ray). It may consist of at least one (registered trademark) disk), smart card, flash memory (eg, card, stick, key drive), floppy (registered trademark) disk, magnetic strip, and the like.
- Storage 1003 may be referred to as auxiliary storage.
- the recording medium described above may be, for example, a database, server or other suitable medium containing at least one of memory 1002 and storage 1003.
- the communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, or the like.
- the communication device 1004 includes, for example, a high frequency switch, a duplexer, a filter, a frequency synthesizer, etc. in order to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). It may be composed of.
- FDD frequency division duplex
- TDD time division duplex
- the input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts an input from the outside.
- the output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that outputs to the outside.
- the input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).
- Bus 1007 may be configured using a single bus or may be configured using different buses for each device.
- the device includes hardware such as a microprocessor, a digital signal processor (Digital Signal Processor: DSP), an Application Specific Integrated Circuit (ASIC), a Programmable Logic Device (PLD), and a Field Programmable Gate Array (FPGA).
- the hardware may implement some or all of each functional block.
- processor 1001 may be implemented using at least one of these hardware.
- information notification includes physical layer signaling (eg Downlink Control Information (DCI), Uplink Control Information (UCI), higher layer signaling (eg RRC signaling, Medium Access Control (MAC) signaling, Master Information Block). (MIB), System Information Block (SIB)), other signals or combinations thereof.
- DCI Downlink Control Information
- UCI Uplink Control Information
- RRC signaling eg RRC signaling, Medium Access Control (MAC) signaling, Master Information Block). (MIB), System Information Block (SIB)
- RRC signaling may also be referred to as an RRC message, eg, RRC Connection Setup. ) Message, RRC Connection Reconfiguration message, etc. may be used.
- LTE LongTermEvolution
- LTE-A LTE-Advanced
- SUPER3G IMT-Advanced
- 4G 4th generation mobile communication system
- 5G 5th generation mobile communication system
- FutureRadioAccess FAA
- NewRadio NR
- W-CDMA registered trademark
- GSM registered trademark
- CDMA2000 Code Division Multiple Access 2000
- UMB UltraMobileBroadband
- IEEE802.11 Wi-Fi (registered trademark)
- IEEE802.16 WiMAX®
- IEEE802.20 Ultra-WideBand
- Bluetooth® Ultra-WideBand
- other systems that utilize appropriate systems and at least one of the next-generation systems extended based on them. It may be applied to one.
- a plurality of systems may be applied in combination (for example, a combination of at least one of LTE and LTE-A and 5G).
- the specific operation performed by the base station in this disclosure may be performed by its upper node (upper node).
- various operations performed for communication with the terminal are the base station and other network nodes other than the base station (eg, MME or). It is clear that it can be done by at least one of (but not limited to, S-GW, etc.).
- S-GW network node
- the case where there is one network node other than the base station is illustrated above, it may be a combination of a plurality of other network nodes (for example, MME and S-GW).
- Information and signals can be output from the upper layer (or lower layer) to the lower layer (or upper layer).
- Input / output may be performed via a plurality of network nodes.
- the input / output information may be stored in a specific location (for example, memory) or may be managed using a management table.
- the input / output information may be overwritten, updated, or added.
- the output information may be deleted.
- the entered information may be transmitted to other devices.
- the determination may be made by a value represented by 1 bit (0 or 1), by a boolean value (Boolean: true or false), or by comparing numerical values (for example, a predetermined value). It may be done by comparison with the value).
- the notification of predetermined information (for example, the notification of "being X") is not limited to the explicit one, but is performed implicitly (for example, the notification of the predetermined information is not performed). May be good.
- software, instructions, information, etc. may be transmitted and received via a transmission medium.
- the software may use at least one of wired technology (coaxial cable, fiber optic cable, twist pair, digital subscriber line (DSL), etc.) and wireless technology (infrared, microwave, etc.) to create a website.
- wired technology coaxial cable, fiber optic cable, twist pair, digital subscriber line (DSL), etc.
- wireless technology infrared, microwave, etc.
- the information, signals, etc. described in this disclosure may be represented using any of a variety of different techniques.
- data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description are voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may be represented by a combination of.
- a channel and a symbol may be a signal (signaling).
- the signal may be a message.
- the component carrier (CC) may be referred to as a carrier frequency, a cell, a frequency carrier, or the like.
- system and “network” used in this disclosure are used interchangeably.
- the information, parameters, etc. described in the present disclosure may be expressed using an absolute value, a relative value from a predetermined value, or another corresponding information. It may be represented.
- the radio resource may be indexed.
- Base Station BS
- Wireless Base Station Wireless Base Station
- Fixed Station NodeB
- eNodeB eNodeB
- gNodeB gNodeB
- Access point "transmission point”
- reception point "transmission / reception point”
- cell “sector”
- Cell group “cell group”
- Terms such as “carrier” and “component carrier” may be used interchangeably.
- Base stations are sometimes referred to by terms such as macrocells, small cells, femtocells, and picocells.
- a base station can accommodate one or more (eg, three) cells (also called sectors). When a base station accommodates multiple cells, the entire base station coverage area can be divided into multiple smaller areas, each smaller area being a base station subsystem (eg, a remote radio for indoor use). Communication services can also be provided by Head: RRH).
- RRH Remote Radio Head
- cell refers to a base station that provides communication services in this coverage, and part or all of the coverage area of at least one of the base station subsystems.
- MS Mobile Station
- UE user equipment
- terminal terminal
- Mobile stations can be used by those skilled in the art as subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless. It may also be referred to as a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.
- At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a communication device, or the like.
- At least one of the base station and the mobile station may be a device mounted on the mobile body, a mobile body itself, or the like.
- the moving body may be a vehicle (eg, car, airplane, etc.), an unmanned moving body (eg, drone, self-driving car, etc.), or a robot (manned or unmanned). ) May be.
- at least one of the base station and the mobile station includes a device that does not necessarily move during communication operation.
- at least one of a base station and a mobile station may be an Internet of Things (IoT) device such as a sensor.
- IoT Internet of Things
- the base station in the present disclosure may be read as a mobile station (user terminal, the same shall apply hereinafter).
- communication between a base station and a mobile station has been replaced with communication between a plurality of mobile stations (for example, it may be called Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.).
- D2D Device-to-Device
- V2X Vehicle-to-Everything
- Each aspect / embodiment of the present disclosure may be applied to the configuration.
- the mobile station may have the functions of the base station.
- words such as "up” and “down” may be read as words corresponding to communication between terminals (for example, "side”).
- the upstream channel, the downstream channel, and the like may be read as a side channel.
- the mobile station in the present disclosure may be read as a base station.
- the base station may have the functions of the mobile station.
- the radio frame may be composed of one or more frames in the time domain. Each one or more frames in the time domain may be referred to as a subframe. Subframes may further be composed of one or more slots in the time domain.
- the subframe may have a fixed time length (eg, 1 ms) that does not depend on numerology.
- the numerology may be a communication parameter that applies to at least one of the transmission and reception of a signal or channel.
- Numerology includes, for example, SubCarrier Spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (Transmission Time Interval: TTI), number of symbols per TTI, wireless frame configuration, transmission / reception. It may indicate at least one of a specific filtering process performed by the machine in the frequency domain, a specific windowing process performed by the transmitter / receiver in the time domain, and the like.
- the slot may be composed of one or more symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbol, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol, etc.) in the time area.
- the slot may be a unit of time based on numerology.
- the slot may include a plurality of mini slots.
- Each minislot may be composed of one or more symbols in the time domain. Further, the mini-slot may be referred to as a sub-slot.
- a minislot may consist of a smaller number of symbols than the slot.
- PDSCH (or PUSCH) transmitted in time units larger than the minislot may be referred to as PDSCH (or PUSCH) mapping type A.
- the PDSCH (or PUSCH) transmitted using the minislot may be referred to as PDSCH (or PUSCH) mapping type B.
- Wireless frames, subframes, slots, mini slots and symbols all represent time units when transmitting signals.
- the radio frame, subframe, slot, minislot and symbol may use different names corresponding to each.
- one subframe may be referred to as a transmission time interval (TTI)
- TTI transmission time interval
- TTI transmission time interval
- TTI transmission time interval
- TTI transmission time interval
- TTI transmission time interval
- TTI slot or one minislot
- at least one of the subframe and TTI may be a subframe (1ms) in existing LTE, a period shorter than 1ms (eg, 1-13 symbols), or a period longer than 1ms. May be.
- the unit representing TTI may be called a slot, a mini slot, or the like instead of a subframe.
- TTI refers to, for example, the minimum time unit of scheduling in wireless communication.
- a base station schedules each user terminal to allocate wireless resources (frequency bandwidth that can be used in each user terminal, transmission power, etc.) in TTI units.
- the definition of TTI is not limited to this.
- TTI may be a transmission time unit such as a channel-encoded data packet (transport block), a code block, or a code word, or may be a processing unit such as scheduling or link adaptation.
- the time interval for example, the number of symbols
- the transport block, code block, code word, etc. may be shorter than the TTI.
- one or more TTIs may be the minimum time unit for scheduling. Further, the number of slots (number of mini-slots) constituting the minimum time unit of the scheduling may be controlled.
- TTI with a time length of 1 ms may be called normal TTI (TTI in LTE Rel.8-12), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, etc.
- a TTI shorter than a normal TTI may be referred to as a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a minislot, a subslot, a slot, and the like.
- the long TTI (for example, normal TTI, subframe, etc.) may be read as a TTI having a time length of more than 1 ms
- the short TTI (for example, shortened TTI, etc.) may be read as a TTI less than the TTI length of the long TTI and 1 ms. It may be read as a TTI having the above TTI length.
- the resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or a plurality of continuous subcarriers in the frequency domain.
- the number of subcarriers contained in RB may be the same regardless of numerology, and may be, for example, 12.
- the number of subcarriers contained in the RB may be determined based on numerology.
- the time domain of RB may include one or more symbols, and may have a length of 1 slot, 1 mini slot, 1 subframe, or 1 TTI.
- Each 1TTI, 1 subframe, etc. may be composed of one or a plurality of resource blocks.
- One or more RBs are physical resource blocks (Physical RB: PRB), sub-carrier groups (Sub-Carrier Group: SCG), resource element groups (Resource Element Group: REG), PRB pairs, RB pairs, etc. May be called.
- Physical RB Physical RB: PRB
- sub-carrier groups Sub-Carrier Group: SCG
- resource element groups Resource Element Group: REG
- PRB pairs RB pairs, etc. May be called.
- the resource block may be composed of one or a plurality of resource elements (ResourceElement: RE).
- RE resource elements
- 1RE may be a radio resource area of 1 subcarrier and 1 symbol.
- Bandwidth Part (which may also be called partial bandwidth) may represent a subset of consecutive common resource blocks for a neurology in a carrier. good.
- the common RB may be specified by the index of the RB with respect to the common reference point of the carrier.
- PRBs may be defined in a BWP and numbered within that BWP.
- BWP may include BWP for UL (UL BWP) and BWP for DL (DL BWP).
- BWP for UL
- DL BWP BWP for DL
- One or more BWPs may be set in one carrier for the UE.
- At least one of the configured BWPs may be active, and the UE may not expect to send or receive a given signal / channel outside the active BWP.
- “cell”, “carrier” and the like in this disclosure may be read as “BWP”.
- the above-mentioned structures such as wireless frames, subframes, slots, mini slots and symbols are merely examples.
- the number of subframes contained in a radio frame the number of slots per subframe or radioframe, the number of minislots contained within a slot, the number of symbols and RBs contained in a slot or minislot, included in RB.
- the number of subcarriers, as well as the number of symbols in the TTI, the symbol length, the cyclic prefix (CP) length, and other configurations can be changed in various ways.
- connection means any direct or indirect connection or connection between two or more elements and each other. It can include the presence of one or more intermediate elements between two “connected” or “joined” elements.
- the connection or connection between the elements may be physical, logical, or a combination thereof.
- connection may be read as "access”.
- the two elements use at least one of one or more wires, cables and printed electrical connections, and as some non-limiting and non-comprehensive examples, the radio frequency region.
- Electromagnetic energies with wavelengths in the microwave and light (both visible and invisible) regions, etc. can be considered to be “connected” or “coupled” to each other.
- the reference signal can also be abbreviated as Reference Signal (RS), and may be called a pilot (Pilot) depending on the applied standard.
- RS Reference Signal
- Pilot pilot
- each of the above devices may be replaced with a "part”, a “circuit”, a “device”, or the like.
- references to elements using designations such as “first” and “second” as used in this disclosure does not generally limit the quantity or order of those elements. These designations can be used in the present disclosure as a convenient way to distinguish between two or more elements. Therefore, references to the first and second elements do not mean that only two elements can be adopted there, or that the first element must somehow precede the second element.
- determining and “determining” used in this disclosure may include a wide variety of actions.
- “Judgment” and “decision” are, for example, judgment (judging), calculation (calculating), calculation (computing), processing (processing), derivation (deriving), investigation (investigating), search (looking up, search, inquiry). It may include (eg, searching in a table, database or another data structure), ascertaining as “judgment” or “decision”.
- judgment and “decision” are receiving (for example, receiving information), transmitting (for example, transmitting information), input (input), output (output), and access. It may include (for example, accessing data in memory) to be regarded as “judgment” or “decision”.
- judgment and “decision” are considered to be “judgment” and “decision” when the things such as solving, selecting, choosing, establishing, and comparing are regarded as “judgment” and “decision”. Can include. That is, “judgment” and “decision” may include considering some action as “judgment” and “decision”. Further, “judgment (decision)” may be read as “assuming", “expecting”, “considering” and the like.
- the term "A and B are different” may mean “A and B are different from each other”.
- the term may mean that "A and B are different from C”.
- Terms such as “separate” and “combined” may be interpreted in the same way as “different”.
- Radio communication system 20 NG-RAN 100 gNB 200 UE 210 Wireless signal transmitter / receiver 220 Amplifier 230 Modulator / demodulator 240 Control signal / reference signal processing 250 Encoding / decoding 260 Data transmitter / receiver 270 Control 1001 Processor 1002 Memory 1003 Storage 1004 Communication device 1005 Input device 1006 Output device 1007 Bus
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Abstract
Description
図1は、本実施形態に係る無線通信システム10の全体概略構成図である。無線通信システム10は、5G New Radio(NR)に従った無線通信システムであり、Next Generation-Radio Access Network 20(以下、NG-RAN20、及びユーザ端末200(User Equipment 200、以下、UE200)を含む。
・FR2:24.25 GHz~52.6 GHz
FR1では、15, 30または60kHzのSub-Carrier Spacing(SCS)が用いられ、5~100MHzの帯域幅(BW)が用いられてもよい。FR2は、FR1よりも高周波数であり、60または120kHz(240kHzが含まれてもよい)のSCSが用いられ、50~400MHzの帯域幅(BW)が用いられてもよい。
なお、図2に示す時間方向(t)は、時間領域、シンボル期間またはシンボル時間などと呼ばれてもよい。また、周波数方向は、周波数領域、リソースブロック、サブキャリア、BWP (Bandwidth part)などと呼ばれてもよい。
UE200は、DCI format 2_4によって示されるULのCancellation Indication(UL CIと呼ばれてもよい)に基づいてUL送信、具体的には、PUSCH(Physical Uplink Shared Channel、上りデータチャネル)または、Sounding Reference Signal(SRS)などの送信をキャンセルできる。なお、UL CIによって、PUCCH(Physical Uplink Control Channel)、上り制御チャネル)がキャンセルされてもよい。
次に、無線通信システム10の機能ブロック構成について説明する。具体的には、UE200の機能ブロック構成について説明する。
制御部270は、複数の低優先度(LP)トラフィック(第1トラフィック)を多重するとともに、複数の高優先度(HP)トラフィック(第2トラフィック)を多重し、複数のLPトラフィックが多重された多重結果(第1多重結果)と、複数のHPトラフィックが多重された多重結果(第2多重結果)とをさらに多重してよい。
次に、無線通信システム10の動作について説明する。具体的には、異なる優先度を有するULトラフィックのUE200内での多重化(Intra-UE multiplexing)、及びDCI format 2_4によって示されるULのCancellation Indication(UL CI)によるUL送信のキャンセルに関する動作について説明する。
Intra-UE multiplexingに関して、次のような処理順序が定義されてよい。
この場合、LPチャネルとHPチャネルとの間に無線リソースのオーバーラップがある場合、LPチャネルはキャンセルされてよい。
この場合、LPチャネルとHPチャネルとの間に無線リソースのオーバーラップがある場合、LPチャネルはキャンセルされてよい。なお、無線リソースには、時間リソース及び周波数リソースが含まれてよい。また、LPチャネル及びHPチャネルは、上述したようにLPトラフィック及びHPトラフィックと同義であると解釈されてよいが、以下では、主にLPチャネル及びHPチャネルの用語を用いる。
・UL CIまたはDynamic SFIによるUL送信のキャンセル
なお、Intra-UE multiplexingの処理順序と、準静的(semi-static)な下りリンク(DL)シンボル、或いは同期信号ブロック(SSB (SS/PBCH Block))との関係は、UL CIなどと同様でもよいし、異なっていてもよい。準静的な下りリンク(DL)シンボルとは、設定によって用途(例えば、UL/DLの別、常時利用可能な否かなど)が変更できるシンボルと解釈されてよい。
以下では、UE200のIntra-UE multiplexing、及び多重結果の送信と、UL CIなどによって示される無線リソースとが重複する場合におけるUL送信のキャンセルに関する動作概略、及び幾つかの動作例について説明する。
LPチャネルとHPチャネルとの多重化処理(多重化の順序)については、次の何れかであってよい。
本動作例では、UE200は、上述したIntra-UE multiplexingに関するPossibility 1を適用する。図6は、動作例1に係るIntra-UE multiplexing及びUL送信のキャンセル例を示す。図6に示すように、UE200は、同一優先度を有する複数のチャネルを多重してよい。
本動作例では、UE200は、上述したIntra-UE multiplexingに関するPossibility 2を適用する。図7は、動作例2に係るIntra-UE multiplexing及びUL送信のキャンセル例を示す。図7に示すように、UE200は、1つまたは複数のLPチャネルと、1つまたは複数のHPチャネルとを多重することによって多重結果(HP+LP)を生成してよい。
本動作例では、UE200は、上述したIntra-UE multiplexingに関するPossibility 3を適用する。図8は、動作例3に係るIntra-UE multiplexing及びUL送信のキャンセル例を示す。図8に示すように、UE200は、複数のLPチャネルを多重することによって多重結果(LP outcome)を生成し、当該多重結果と、1つまたは複数のHPチャネルとを多重することによって多重結果(HP+LP)を生成してよい。
本動作例では、UE200は、上述したIntra-UE multiplexingに関するPossibility 4を適用する。図9は、動作例4に係るIntra-UE multiplexing及びUL送信のキャンセル例を示す。図9に示すように、UE200は、複数のHPチャネルを多重することによって多重結果(HP outcome)を生成し、当該多重結果と、1つまたは複数のLPチャネルとを多重することによって多重結果(HP+LP)を生成してよい。
上述した動作例については、以下のような変更が加えられてもよい。例えば、UL CIによるUL送信(専用チャネル)のキャンセルは、Dynamic SFI、準静的なDLシンボル、或いはSSBによるキャンセルに置き換えられてもよい。さらに、UL CI、Dynamic SFI、準静的なDLシンボル、或いはSSBによるキャンセルが組み合わされてもよい。
上述した実施形態によれば、以下の作用効果が得られる。具体的には、UE200は、LPチャネルと、低優先度よりも優先度が高いHPチャネルとの多重化処理を実行でき、当該多重化処理において、多重結果(LP outcome, HP outcomeなど)の送信と重複する無線リソースを使用するUL送信をキャンセルできる。
以上、実施形態について説明したが、当該実施形態の記載に限定されるものではなく、種々の変形及び改良が可能であることは、当業者には自明である。
無線フレームは時間領域において1つまたは複数のフレームによって構成されてもよい。時間領域において1つまたは複数の各フレームはサブフレームと呼ばれてもよい。サブフレームはさらに時間領域において1つまたは複数のスロットによって構成されてもよい。サブフレームは、ニューメロロジー(numerology)に依存しない固定の時間長(例えば、1ms)であってもよい。
20 NG-RAN
100 gNB
200 UE
210 無線信号送受信部
220 アンプ部
230 変復調部
240 制御信号・参照信号処理部
250 符号化/復号部
260 データ送受信部
270 制御部
1001 プロセッサ
1002 メモリ
1003 ストレージ
1004 通信装置
1005 入力装置
1006 出力装置
1007 バス
Claims (6)
- 第1優先度を有する第1トラフィックと、前記第1優先度と異なる第2優先度を有する第2トラフィックとの多重化処理を実行する制御部と、
前記第1トラフィックと前記第2トラフィックとが多重された多重結果を送信する送信部と
を備え、
前記制御部は、前記多重化処理において、前記多重結果の送信と重複する無線リソースを使用する上りリンク送信をキャンセルする端末。 - 前記制御部は、
複数の前記第1トラフィックを多重するとともに、複数の前記第2トラフィックを多重し、
複数の前記第1トラフィックが多重された第1多重結果と、複数の前記第2トラフィックが多重された第2多重結果とをさらに多重する請求項1に記載の端末。 - 前記制御部は、複数の前記第1トラフィック及び複数の前記第2トラフィックを多重する前に、前記上りリンク送信をキャンセルする請求項2に記載の端末。
- 前記制御部は、前記第1多重結果と前記第2多重結果とを多重する前に、前記上りリンク送信をキャンセルする請求項2に記載の端末。
- 前記制御部は、前記第1多重結果と前記第2多重結果とを多重した後に、前記上りリンク送信をキャンセルする請求項2に記載の端末。
- 第1優先度を有する第1トラフィックと、前記第1優先度と異なる第2優先度を有する第2トラフィックとの多重化処理を実行するステップと、
前記第1トラフィックと前記第2トラフィックとが多重された多重結果を送信するステップと、
前記多重化処理において、前記多重結果の送信と重複する無線リソースを使用する上りリンク送信をキャンセルするステップと
を含む無線通信方法。
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