WO2019211916A1 - ユーザ端末及び無線基地局 - Google Patents
ユーザ端末及び無線基地局 Download PDFInfo
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- WO2019211916A1 WO2019211916A1 PCT/JP2018/017561 JP2018017561W WO2019211916A1 WO 2019211916 A1 WO2019211916 A1 WO 2019211916A1 JP 2018017561 W JP2018017561 W JP 2018017561W WO 2019211916 A1 WO2019211916 A1 WO 2019211916A1
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- resource set
- pucch resource
- user terminal
- pucch
- transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/02—Selection of wireless resources by user or terminal
Definitions
- the present invention relates to a user terminal and a radio base station in a next-generation mobile communication system.
- LTE Long Term Evolution
- Non-Patent Document 1 LTE-A (LTE-Advanced), FRA (Future Radio Access), 4G, 5G, 5G + (plus), NR ( New RAT) and LTE Rel.14, 15 ⁇ ) are also being considered.
- a 1 ms subframe (also referred to as a transmission time interval (TTI), etc.) is used for downlink (DL) and / or uplink. Communication of a link (UL: Uplink) is performed.
- the subframe is a transmission time unit of one channel-encoded data packet, and is a processing unit such as scheduling, link adaptation, retransmission control (HARQ: Hybrid Automatic Repeat reQuest).
- the user terminal uses an uplink control channel (for example, PUCCH: Physical Uplink Control Channel) or an uplink shared channel (for example, PUSCH: Physical Uplink Shared Channel). And transmits uplink control information (UCI).
- uplink control channel for example, PUCCH: Physical Uplink Control Channel
- PUSCH Physical Uplink Shared Channel
- UCI uplink control information
- the configuration (format) of the uplink control channel is called a PUCCH format or the like.
- E-UTRA Evolved Universal Terrestrial Radio Access
- E-UTRAN Evolved Universal Terrestrial Radio Access Network
- a PUCCH resource used for UCI transmission is determined from a PUCCH resource set selected based on the UCI payload size (number of bits) based on a predetermined field in DCI.
- the number of PUCCH resources included in the PUCCH resource set is limited to a certain value or more, processing may be complicated and load may be increased.
- the present invention has been made in view of such a point, and an object of the present invention is to provide a user terminal and a radio base station that can set an uplink control channel resource from an appropriate number of uplink control channel resource candidates.
- a user terminal includes: a transmission unit that transmits uplink control information using an uplink control channel; a first resource set based on higher layer signaling; a second resource set for before higher layer connection; And a control unit that determines a transmission resource for the uplink control channel from one resource set based on a predetermined field in downlink control information.
- an uplink control channel resource can be set from an appropriate number of uplink control channel resource candidates.
- FIG. 1 is a diagram illustrating an example of allocation of PUCCH resources. It is a figure which shows an example of the table which matches the 1st PUCCH resource set which concerns on aspect 1-1, and a predetermined field.
- 3A and 3B are diagrams illustrating a first example of association between a first PUCCH resource set and a predetermined field and association between a second PUCCH resource set and a predetermined field according to aspect 1-2.
- 4A and 4B are diagrams illustrating a second example of the association between the first PUCCH resource set and the predetermined field and the association between the second PUCCH resource set and the predetermined field according to aspect 1-2.
- 5A and 5B are diagrams illustrating a second example of the association between the first PUCCH resource set and the predetermined field and the association between the second PUCCH resource set and the predetermined field according to aspect 1-2.
- a configuration for an uplink control channel (for example, PUCCH) used for UCI transmission (also referred to as format, PUCCH format (PF), etc.) Is being considered.
- PUCCH uplink control channel
- PF PUCCH format
- LTE Rel. 15 it is considered to support five types of PF0 to PF4.
- the name of PF shown below is only an illustration and a different name may be used.
- PF 0 and 1 are PFs used for transmission of UCI (for example, acknowledgment information (HARQ-ACK: Hybrid Automatic Repeat reQuest-Acknowledge, ACK or NACK)) of 2 bits or less (up to 2 bits). It is. Since PF0 can be assigned to one or two symbols, it is also referred to as a short PUCCH or a sequence-based short PUCCH. On the other hand, since PF1 can be assigned to 4-14 symbols, it is also called long PUCCH or the like. In PF1, a plurality of user terminals may be code division multiplexed (CDM) in the same PRB by time domain block spreading using at least one of CS and OCC.
- CDM code division multiplexed
- PF2-4 transmits more than 2 bits (more than 2 bits) UCI (for example, channel state information (CSI) (or CSI and HARQ-ACK and / or scheduling request (SR))) PF used. Since PF2 can be assigned to one or two symbols, it is also called a short PUCCH or the like. On the other hand, since PFs 3 and 4 can be assigned to 4-14 symbols, they are also called long PUCCHs. In PF4, a plurality of user terminals may be CDM using block spreading in the (frequency domain) before DFT.
- UCI for example, channel state information (CSI) (or CSI and HARQ-ACK and / or scheduling request (SR)
- PF2 can be assigned to one or two symbols, it is also called a short PUCCH or the like.
- PFs 3 and 4 can be assigned to 4-14 symbols, they are also called long PUCCHs.
- a plurality of user terminals may be CDM using block spreading in the (frequency domain) before DFT.
- Allocation of resources (for example, PUCCH resources) used for transmission of the uplink control channel is performed using higher layer signaling and / or downlink control information (DCI).
- the upper layer signaling is, for example, at least one of RRC (Radio Resource Control) signaling, system information (for example, RMSI: Remaining Minimum System Information, OSI: Other System Information, MIB: Master Information Block, SIB: System Information Block).
- RRC Radio Resource Control
- system information for example, RMSI: Remaining Minimum System Information
- OSI System Information
- MIB Master Information Block
- SIB System Information Block
- broadcast information PBCH: Physical Broadcast Channel
- one or more sets (PUCCH resource sets) each including one or more PUCCH resources are notified (configured) by higher layer signaling.
- K for example, 1 ⁇ K ⁇ 4
- PUCCH resource sets may be notified from the radio base station to the user terminal.
- Each PUCCH resource set may include M (eg, 8 ⁇ M ⁇ 32) PUCCH resources.
- the user terminal may determine a single PUCCH resource set (first PUCCH resource set) from the set K PUCCH resource sets based on the UCI payload size (UCI payload size).
- the UCI payload size may be the number of UCI bits not including a cyclic redundancy check (CRC) bit.
- the user terminal receives at least one of DCI and implicit information (also referred to as implicit indication information or an implicit index) from the M PUCCH resources included in the determined PUCCH resource set.
- implicit information also referred to as implicit indication information or an implicit index
- the PUCCH resource used for UCI transmission may be determined based on the above.
- FIG. 1 is a diagram showing an example of PUCCH resource allocation.
- K 4
- four PUCCH resource sets # 0 to # 3 are configured from the radio base station to the user terminal by higher layer signaling.
- each PUCCH resource set # 0 to # 3 includes M (for example, 8 ⁇ M ⁇ 32) PUCCH resources # 0 to # M-1. Note that the number of PUCCH resources included in each PUCCH resource set may be the same or different.
- each PUCCH resource set in the user terminal may include a value of at least one parameter (also referred to as a field or information) described below.
- Each parameter may have a range of values that can be taken for each PUCCH format.
- -Symbol for starting PUCCH allocation (start symbol) -Number of symbols allocated to PUCCH in a slot (period allocated to PUCCH) ⁇ Index of resource block (physical resource block (PRB)) where allocation of PUCCH is started ⁇ Number of PRBs allocated to PUCCH ⁇ Whether frequency hopping is enabled for PUCCH ⁇ Frequency hopping is enabled 2nd hop frequency resource, initial cyclic shift (CS) index, orthogonal spreading code (eg, OCC: Orthogonal Cover Code) index, time-domain, discrete Fourier transform (DFT) OCC length used for previous block spreading (also called OCC length, spreading factor, etc.) -OCC index used for block-wise spreading after DFT
- the user terminal selects one of the PUCCH resource sets based on the UCI payload size.
- PUCCH resource set # 0 when the UCI payload size is 1 or 2 bits, PUCCH resource set # 0 is selected. Further, when the UCI payload size is 3 bits or more and N 2 ⁇ 1 bits or less, the PUCCH resource set # 1 is selected. In addition, when the UCI payload size is N 2 bits or more and N 3 ⁇ 1 bits or less, the PUCCH resource set # 2 is selected. Similarly, when the UCI payload size is not less than N 3 bits and not more than N 3 ⁇ 1 bits, PUCCH resource set # 3 is selected.
- the start positions (number of start bits) N 0 and N 1 of the UCI payload sizes for PUCCH resource sets # 0 and # 1 may be 1 and 3, respectively. Accordingly, since PUCCH resource set # 0 is selected when transmitting UCI of 2 bits or less, PUCCH resource set # 0 assigns PUCCH resources # 0 to # M-1 for at least one of PF0 and PF1. May be included. On the other hand, when transmitting UCI exceeding 2 bits, any one of PUCCH resource sets # 1 to # 3 is selected, so that PUCCH resource sets # 1 to # 3 are at least one of PF2, PF3, and PF4, respectively. Single PUCCH resources # 0 to # M-1.
- the information (start position information) indicating the start position (N i ) of the payload size of the UCI for PUCCH resource set #i is transmitted to the user terminal using higher layer signaling. Notification (setting) may be made.
- the start position (N i ) may be unique to the user terminal.
- the start position (N i ) may be set to a value in the range of 4 bits to 256 (for example, a multiple of 4).
- information indicating the start position (N 2 , N 3 ) of the UCI payload size for PUCCH resource sets # 2 and # 3 is the upper layer signaling (for example, user-specific RRC signaling), respectively. Notified to the terminal.
- N K The maximum payload size of UCI for each PUCCH resource set is given by N K ⁇ 1.
- N K is explicitly notified to the user terminal by higher layer signaling and / or DCI (setting) may be, or may be implicitly derived.
- the user terminal selects the UCI based on the value of a predetermined field of DCI from among the PUCCH resources # 0 to # M ⁇ 1 included in the PUCCH resource set selected based on the UCI payload size.
- a single PUCCH resource used for transmission can be determined.
- the number M of PUCCH resources in one PUCCH resource set may be set in the user terminal by higher layer signaling.
- RRC connection setup RRC connection, higher layer connection
- at least one PUCCH resource cannot be set (notified) to the user terminal using RRC signaling.
- UCI transmission is required even before setting up an RRC connection.
- a random access procedure is performed between the user terminal and the radio base station.
- a user terminal transmits a preamble (also referred to as a random access preamble, a random access channel (PRACH: Physical Random Access Channel), a message 1 (Msg. 1), or the like).
- PRACH Physical Random Access Channel
- Msg. 1 message 1
- RAR Random Access Response
- the user terminal establishes uplink synchronization based on the timing advance (TA) included in the message 2, and transmits a control message (message 3) of the higher layer (L2 / L3) using the PUSCH.
- TA timing advance
- the control message includes a user terminal identifier (for example, C-RNTI (Cell-Radio Network Temporary Identifier)).
- C-RNTI Cell-Radio Network Temporary Identifier
- the radio base station transmits a contention resolution message (message 4) using the PDSCH according to the control message of the higher layer.
- the user terminal transmits HARQ-ACK of the message 4 to the radio base station using PUCCH.
- the RRC connection is set up for the user terminal.
- the random access procedure exemplified above requires transmission of UCI including HARQ-ACK for message 4, and how to determine the PUCCH resource used for transmission of the UCI is a problem. Become.
- the user terminal receives one or more PUCCH resources (PUCCH resource candidates, PUCCH resource sets, second PUCCH resources) indicated by an index (also referred to as an instruction field or the like) in system information (for example, RMSI). It has been studied to select a PUCCH resource to be used for UCI transmission based on a bit (also referred to as a predetermined field, an index, etc.) and / or an implied value in DCI.
- PUCCH resource candidates PUCCH resource candidates, PUCCH resource sets, second PUCCH resources
- an index also referred to as an instruction field or the like
- RMSI system information
- the bit value of the DCI is, for example, a 2-bit bit value, and it is considered that four types of PUCCH resources can be selected.
- the implied value may be derived based on at least one of the following parameters, for example.
- CCE Control Resource Element
- CORESET Control Resource Set
- CORESET Control Resource Set
- TPC transmission power control
- TCI command-Transmission configuration indicator
- TCI state TCI state
- DMRS demodulation reference signal
- one of a plurality of PUCCH resources is specified by an indication field (also referred to as an index, an RMSI index, an identifier, an RMSI identifier, or the like) in the RMSI.
- an indication field also referred to as an index, an RMSI index, an identifier, an RMSI identifier, or the like
- 16 types of PUCCH resources are specified by a 4-bit RMSI index value.
- Each of the 16 types of PUCCH resources may be referred to as a PUCCH resource set.
- Each PUCCH resource indicated by the RMSI index value may include one or more cell-specific parameters.
- the cell-specific parameters include at least one of the following parameters, and may include other parameters.
- PUCCH resource identifier PUCCH resource indicator
- ACK / NACK resource identifier ARI
- ARO ACK / NACK Resource Offset
- TPC command One of a plurality of PUCCH resources is specified by at least one of a field) and an implied value. For example, 16 types of PUCCH resources are specified by 3-bit ARI and 1-bit implicit value in DCI.
- Each PUCCH resource indicated by at least one of the ARI and the implied value may include one or more user terminal specific (UE-specific) parameters.
- the UE-specific parameters include at least one of the following parameters and may include other parameters.
- Information indicating from which direction (hopping direction) of a predetermined bandwidth (hopping direction) for example, indicating that the first hop is a PRB with a small index number and the second hop is a PRB with a large index number Information (for example, “1”) or information indicating that the first hop is a PRB with a large index number and the second hop is a PRB with a small index number (for example, “2”)
- the implied value may be derived based on at least one of the following parameters, for example. Note that the implied value may be any value derived without explicit signaling.
- An index of a control resource unit for example, CCE: Control Resource Element
- a downlink control channel for example, PDCCH: Physical Downlink Control Channel
- An aggregation level of the control resource unit for example, CCE: Control Resource Element
- M is 8 to 32 with respect to PF0 / 1. Further, it is considered that M is 8 with respect to PF2 / 3/4.
- the complexity and load of the network is high when limited to the minimum value of M There is a risk.
- the present inventors have conceived a method of flexibly setting the number of PUCCH resources in one PUCCH resource set.
- the scheduler of the NW is simplified, and the complexity and load of the NW can be suppressed.
- the overhead (the number of bits) of higher layer signaling (for example, RRC signaling) for setting the PUCCH resource set can be suppressed.
- each PUCCH resource in each PUCCH resource set is explicitly notified (set) from the radio base station to the user terminal by higher layer signaling, but is not limited thereto.
- at least one PUCCH resource in at least one PUCCH resource set may be predetermined according to the specification or may be derived at the user terminal.
- the predetermined field of x bits includes a PUCCH resource identifier (PUCCH resource indicator) field, an ACK / NACK resource identifier (ARI: ACK / NACK Resource Indicator), and an ACK / NACK resource offset (ARO: ACK / NACK Resource Offset). Or may be called a TPC command field or the like.
- PUCCH resource indicator PUCCH resource indicator
- ARI ACK / NACK Resource Indicator
- ARO ACK / NACK Resource Offset
- UCI also provides acknowledgment information (eg, retransmission control information, HARQ-ACK (Hybrid Automatic Repeat reQuest-Acknowledge), ACK / NACK (Acknowledge / Non-onAcknowledge) for downlink shared channels (eg, PDSCH: Physical Downlink Shared Channel). )), An uplink shared channel (for example, PUSCH) scheduling request (SR: Scheduling Request), and channel state information (CSI: Channel State Information).
- HARQ-ACK Hybrid Automatic Repeat reQuest-Acknowledge
- ACK / NACK Acknowledge / Non-onAcknowledge
- CSI Channel State Information
- the radio base station may determine the PUCCH resource in the same manner as the operation of the UE in the following embodiment, and may receive the UCI on the PUCCH resource.
- the size of the predetermined field may be fixed.
- the size of the predetermined field is 3 bits.
- M may be less than 8.
- M is a PUCCH resource set selected based on the UCI length (a PUCCH resource set based on the UCI length, a first PUCCH resource set, a selection) among the PUCCH resource sets configured by the higher layer (upper layer parameters, RRC signaling) It may be the number of PUCCH resources in the (PUCCH resource set).
- the maximum value of the number of PUCCH resources in the first PUCCH resource set may be defined by the specification. This maximum value may be 32, for example.
- An RRC information element (for example, PUCCH-ResourceSet) for setting a PUCCH resource set includes a sequence of PUCCH resources (PUCCH resource index (ID)), and the minimum value of the number of elements M of the sequence may not be 8.
- the minimum value of the number M of elements in the series may be another number smaller than 8, such as 0, 1, 2, 4, or the like.
- the specification may specify that the number M (sequence size) of the sequence is 0 to maxNrofPUCCH-ResourcesPerSet.
- the size of the predetermined field is 3 bits and M is less than 8, some values (bits or code points) of the predetermined field may not be used for setting the PUCCH resource.
- the UE may not expect (assum) a value corresponding to P or more PUCCH resource IDs in the predetermined field.
- one of the following aspects 1-1 and 1-2 may be used.
- the predetermined range may be a range of values represented by at least one predetermined bit.
- the predetermined range may be a predetermined range of code points. In other words, the number of candidates for the value of the predetermined field may be smaller than 8.
- the UE may assume that the PUCCH resource is set only by a predetermined bit in a predetermined field, and the PUCCH resource is not set by a bit other than the predetermined bit in the predetermined field.
- the UE may determine the PUCCH resource using only predetermined bits in the predetermined field.
- the UE may not use bits other than the predetermined bits in the predetermined field.
- the radio base station may set the PUCCH resource using only predetermined bits in the predetermined field.
- the radio base station may not use bits other than the predetermined bits in the predetermined field.
- the minimum value of the number of PUCCH resources in the PUCCH resource set set by the higher layer may be zero.
- the predetermined bit may be 2 bits among 3 bits of the predetermined field.
- PUCCH resources # 0 to # 3 are associated with values 000 to 011 of the predetermined field, respectively.
- the upper 1 bit of the predetermined field is fixed to 0, and the lower 2 bits of the predetermined field indicate the PUCCH resource ID.
- Predetermined field values 100 to 111 are not set. In this case, the first PUCCH resource set may not include PUCCH resources # 4 to # 7.
- the predetermined bit may be 1 bit among 3 bits of the predetermined field.
- the value of the upper 2 bits of the predetermined field may be fixed to 0, and the lower 1 bit of the predetermined field may indicate the PUCCH resource ID.
- the UE may select a predetermined PUCCH resource from the selected PUCCH resource set.
- the predetermined PUCCH resource may indicate the first PUCCH resource in the PUCCH resource set.
- the value of the predetermined field may be a predetermined fixed value.
- the UE may select a predetermined PUCCH resource from the PUCCH resource set (second PUCCH resource set) for before RRC connection.
- the second PUCCH resource set may be specified by RMSI from a plurality of specified PUCCH resource sets, may be set in advance, or may be specified by specifications.
- the predetermined PUCCH resource may be the first or lowest index PUCCH resource in the second PUCCH resource set.
- the second PUCCH resource set may include 16 types of PUCCH resources.
- the predetermined field is 3 bits
- one of 16 types of PUCCH resources may be specified by a 3-bit predetermined field and a 1-bit implicit value.
- the UE may perform one of the following operations 1 and 2.
- the UE determines an implicit value based on the CCE index of the PDCCH for DCI that triggers the PUCCH (DCI for PDSCH scheduling, DCI including a predetermined field).
- the implied value may be a value obtained by normalizing the CCE index with the aggregation level, that is, (CCE index / aggregation level) mod 2.
- the number of PUCCH resources in the PUCCH resource set can be less than 8, and the overhead of higher layer signaling for setting the PUCCH resource set can be suppressed.
- the first PUCCH resource set may be used when the value of the predetermined field is within the predetermined range, and the second PUCCH resource set may be used when the value of the predetermined field is outside the predetermined range.
- the UE transmits PUCCH resources (# 0 to # 3) associated with the value of the predetermined field from the first PUCCH resource set. Select.
- the UE transmits PUCCH resources (# 4 to # 7) associated with the value of the predetermined field from the second PUCCH resource set. Select.
- the first PUCCH resource set may not include PUCCH resources # 4 to # 7.
- the second PUCCH resource set may be used when the value of the predetermined field is within the predetermined range, and the first PUCCH resource set may be used when the value of the predetermined field is outside the predetermined range.
- the UE selects a PUCCH resource associated with the value of the predetermined field from the first PUCCH resource set.
- the UE selects a PUCCH resource associated with the value of the predetermined field from the second PUCCH resource set.
- a value of at least one predetermined bit in the predetermined field is associated with a PUCCH resource ID in the first PUCCH resource set, and a value of at least one predetermined bit in the predetermined field is associated with the PUCCH resource ID in the second PUCCH resource set. And a value of a bit other than the predetermined bit in the predetermined field may be associated with whether or not to use the first PUCCH resource set.
- the lower 2 bits of the predetermined field (00 to 11) are associated with the PUCCH resources (# 0 to # 3) of the first PUCCH resource set, and the lower 2 bits of the predetermined field (00 To 11) are associated with the PUCCH resources (# 0 to # 3) of the second PUCCH resource set. Furthermore, it is assumed that the value 1 of the upper 1 bit of the predetermined field is associated with the first PUCCH resource set, and the value 1 of the upper 1 bit of the predetermined field is associated with the second PUCCH resource set. As shown in FIG.
- the UE when the value of the predetermined field is within a predetermined range (000 to 011), the UE transmits PUCCH resources (# 0 to # 3) associated with the value of the predetermined field from the first PUCCH resource set. Select. As shown in FIG. 5B, when the value of the predetermined field is out of the predetermined range (100 to 111), the UE transmits PUCCH resources (# 0 to # 3) associated with the value of the predetermined field from the second PUCCH resource set. Select.
- the number of PUCCH resources in the first PUCCH resource set is reduced by using the second PUCCH resource set for RRC connection in addition to the first PUCCH resource set set and selected by the higher layer. Therefore, it is possible to suppress a decrease in flexibility in setting the PUCCH resource.
- the size of the predetermined field may be variable.
- the size of the predetermined field is 0 to 3 bits.
- the number M of PUCCH resources in the first PUCCH resource set may be 1 to the maximum number.
- each PUCCH resource set includes at least one PUCCH resource.
- M may be 0 to the maximum number.
- each PUCCH resource set may not include a PUCCH resource.
- One of the following modes 2-1 and 2-2 may be used for setting the PUCCH resource.
- the size of the predetermined field in the fallback DCI may be fixed, and the size of the predetermined field in the non-fallback DCI may be variable.
- the size of the predetermined field in the fallback DCI may be 3 bits, and the size of the predetermined field in the non-fallback DCI (predetermined DCI format) may be 0 to 3 bits.
- Fallback DCI uses, for example, DCI format 1_0.
- Non-fallback DCI uses, for example, DCI format 1_1.
- Non-fallback DCI is, for example, DCI transmitted in UE-SS (UE-specific Search Space), and its configuration (content, payload, etc.) can be set by UE-specific higher layer signaling (for example, RRC signaling). DCI may be used. Non-fallback DCI may be scrambled by CRC (Cyclic Redundancy Check) by C-RNTI.
- CRC Cyclic Redundancy Check
- the fallback DCI may be, for example, DCI transmitted in at least one of C-SS (Common Search Space) and UE-SS, and DCI whose configuration cannot be set by UE-specific higher layer signaling. Note that the configuration (contents, payload, etc.) of the fallback DCI may be set by higher layer signaling common to the UE (for example, broadcast information, system information, etc.).
- the UE may select a PUCCH resource associated with a value of a predetermined field of fallback DCI from the second PUCCH resource set before RRC connection.
- the size of a predetermined field of non-fallback DCI may be associated with M.
- the UE may determine the size of a predetermined field corresponding to M for non-fallback DCI.
- the UE may select a PUCCH resource associated with a value of a predetermined field of non-fallback DCI from the first PUCCH resource set after RRC connection.
- the size of the non-fallback DCI larger than the size of the fallback DCI can be minimized.
- the error rate of PDCCH including non-fallback DCI can be improved.
- the UE since the size of the predetermined field of the non-fallback DCI is associated with M, the UE determines the size of the predetermined field corresponding to M, thereby blinding the PDCCH of the non-fallback DCI for each size. There is no need to perform decryption.
- the size of the predetermined field in the DCI may be variable.
- the size of a predetermined field in DCI may be 0 to 3 bits.
- the size of the predetermined field may be determined according to the number M of PUCCH resources in the first PUCCH resource set. For example, the size of a predetermined field of DCI may be associated with M. The UE may determine the size of a predetermined field corresponding to M. Moreover, UE may select the PUCCH resource linked
- the number of PUCCH resources that can be specified by DCI in the second PUCCH resource set may be different depending on the value of the indication field in RMSI.
- the size of the predetermined field of DCI may be associated with the value of the instruction field.
- the UE may determine the size of the predetermined field corresponding to the value of the indication field.
- UE may select the PUCCH resource linked
- the size of the predetermined field in DCI is 3 bits
- the size of the predetermined field in DCI is 2 bits. May be.
- the size of the predetermined field is 3 bits, one of 8 PUCCH resources may be specified by the predetermined field from the second PUCCH resource set.
- the size of the predetermined field is 2 bits, one of four PUCCH resources may be specified by the predetermined field from the second PUCCH resource set.
- the size of the predetermined field in DCI may be 1 bit. If the size of the predetermined field is 1 bit, one of the two PUCCH resources may be specified by the predetermined field from the second PUCCH resource set.
- the size of the predetermined field in DCI may be 0 bits.
- the size of the predetermined field is 0 bits, one predetermined PUCCH resource may be specified from the second PUCCH resource set.
- the table indicating the second PUCCH resource set may indicate the number of PUCCH resources in the second PUCCH resource set.
- the value of the indication field may be associated with the number of PUCCH resources.
- the error rate of PDCCH including DCI can be improved by reducing the size of DCI.
- wireless communication system Wireless communication system
- the radio communication method according to each of the above aspects is applied.
- wireless communication method which concerns on each said aspect may be applied individually, respectively, and may be applied combining at least two.
- FIG. 6 is a diagram illustrating an example of a schematic configuration of the wireless communication system according to the present embodiment.
- carrier aggregation (CA) and / or dual connectivity (DC) in which a plurality of basic frequency blocks (component carriers) each having a system bandwidth (for example, 20 MHz) of the LTE system as one unit are applied. can do.
- the wireless communication system 1 is called SUPER 3G, LTE-A (LTE-Advanced), IMT-Advanced, 4G, 5G, FRA (Future Radio Access), NR (New Radio Access Technology), etc. Also good.
- the radio communication system 1 shown in this figure includes a radio base station 11 that forms a macro cell C1, and radio base stations 12a to 12c that are arranged in the macro cell C1 and form a small cell C2 that is narrower than the macro cell C1. .
- the user terminal 20 is arrange
- the neurology is communication parameters in the frequency direction and / or the time direction (for example, subcarrier interval (subcarrier interval), bandwidth, symbol length, CP time length (CP length), subframe length. , TTI time length (TTI length), number of symbols per TTI, radio frame configuration, filtering process, windowing process, etc.).
- subcarrier intervals such as 15 kHz, 30 kHz, 60 kHz, 120 kHz, and 240 kHz may be supported.
- the user terminal 20 can be connected to both the radio base station 11 and the radio base station 12. It is assumed that the user terminal 20 uses the macro cell C1 and the small cell C2 that use different frequencies simultaneously by CA or DC. In addition, the user terminal 20 can apply CA or DC using a plurality of cells (CC) (for example, two or more CCs). Further, the user terminal can use the license band CC and the unlicensed band CC as a plurality of cells.
- CC cells
- the user terminal 20 can perform communication using time division duplex (TDD) or frequency division duplex (FDD) in each cell.
- TDD time division duplex
- FDD frequency division duplex
- the TDD cell and the FDD cell may be referred to as a TDD carrier (frame configuration type 2), an FDD carrier (frame configuration type 1), and the like, respectively.
- each cell (carrier) a single neurology may be applied, or a plurality of different neurology may be applied.
- Communication between the user terminal 20 and the radio base station 11 can be performed using a carrier having a relatively low frequency band (for example, 2 GHz) and a narrow bandwidth (referred to as an existing carrier or a legacy carrier).
- a carrier having a wide bandwidth in a relatively high frequency band for example, 3.5 GHz, 5 GHz, 30 to 70 GHz, etc.
- the same carrier as that between the base station 11 and the base station 11 may be used.
- the configuration of the frequency band used by each radio base station is not limited to this.
- a wired connection for example, an optical fiber compliant with CPRI (Common Public Radio Interface), an X2 interface, etc.
- a wireless connection It can be set as the structure to do.
- the radio base station 11 and each radio base station 12 are connected to the higher station apparatus 30 and connected to the core network 40 via the higher station apparatus 30.
- the upper station device 30 includes, for example, an access gateway device, a radio network controller (RNC), a mobility management entity (MME), and the like, but is not limited thereto.
- RNC radio network controller
- MME mobility management entity
- Each radio base station 12 may be connected to the higher station apparatus 30 via the radio base station 11.
- the radio base station 11 is a radio base station having a relatively wide coverage, and may be called a macro base station, an aggregation node, an eNB (eNodeB), a gNB (gNodeB), a transmission / reception point (TRP), or the like. Good.
- the radio base station 12 is a radio base station having local coverage, and is a small base station, micro base station, pico base station, femto base station, HeNB (Home eNodeB), RRH (Remote Radio Head), eNB. , GNB, and transmission / reception point.
- a radio base station 10 when the radio base stations 11 and 12 are not distinguished, they are collectively referred to as a radio base station 10.
- Each user terminal 20 is a terminal that supports various communication schemes such as LTE, LTE-A, 5G, and NR, and may include not only mobile communication terminals but also fixed communication terminals. Further, the user terminal 20 can perform inter-terminal communication (D2D) with other user terminals 20.
- D2D inter-terminal communication
- OFDMA orthogonal frequency division multiple access
- SC-FDMA single carrier-frequency division multiple access
- OFDMA is a multi-carrier transmission scheme that performs communication by dividing a frequency band into a plurality of narrow frequency bands (subcarriers) and mapping data to each subcarrier.
- SC-FDMA is a single-carrier transmission scheme that reduces interference between terminals by dividing the system bandwidth into bands consisting of one or continuous resource blocks for each terminal and using a plurality of terminals with mutually different bands. is there.
- the uplink and downlink radio access schemes are not limited to these combinations, and OFDMA may be used in the UL.
- a multicarrier waveform for example, OFDM waveform
- a single carrier waveform for example, DFT-s-OFDM waveform
- a DL shared channel (PDSCH: Physical Downlink Shared Channel, also referred to as DL data channel) shared by each user terminal 20, a broadcast channel (PBCH: Physical Broadcast Channel), L1 / L2 A control channel or the like is used.
- PDSCH Physical Downlink Shared Channel
- PBCH Physical Broadcast Channel
- SIB System Information Block
- MIB Master Information Block
- L1 / L2 control channels include DL control channels (PDCCH (Physical Downlink Control Channel), EPDCCH (Enhanced Physical Downlink Control Channel)), PCFICH (Physical Control Format Indicator Channel), PHICH (Physical Hybrid-ARQ Indicator Channel), etc. .
- Downlink control information (DCI: Downlink Control Information) including scheduling information of PDSCH and PUSCH is transmitted by PDCCH.
- the number of OFDM symbols used for PDCCH is transmitted by PCFICH.
- the EPDCCH is frequency-division multiplexed with the PDSCH, and is used for transmission of DCI and the like as with the PDCCH.
- HARQ retransmission control information (ACK / NACK) for PUSCH can be transmitted by at least one of PHICH, PDCCH, and EPDCCH.
- a UL shared channel (PUSCH: Physical Uplink Shared Channel, also referred to as uplink shared channel), an uplink control channel (PUCCH: Physical Uplink Control Channel), random, which is shared by each user terminal 20
- An access channel (PRACH: Physical Random Access Channel) or the like is used.
- User data and higher layer control information are transmitted by the PUSCH.
- Uplink control information including at least one of retransmission control information (A / N), channel state information (CSI), and the like of a DL signal is transmitted by PUSCH or PUCCH.
- the PRACH can transmit a random access preamble for establishing a connection with a cell.
- FIG. 7 is a diagram illustrating an example of the overall configuration of the radio base station according to the present embodiment.
- the radio base station 10 includes a plurality of transmission / reception antennas 101, an amplifier unit 102, a transmission / reception unit 103, a baseband signal processing unit 104, a call processing unit 105, and a transmission path interface 106. Note that each of the transmission / reception antenna 101, the amplifier unit 102, and the transmission / reception unit 103 may be configured to include one or more.
- User data transmitted from the radio base station 10 to the user terminal 20 by DL is input from the higher station apparatus 30 to the baseband signal processing unit 104 via the transmission path interface 106.
- PDCP Packet Data Convergence Protocol
- RLC Radio Link Control
- MAC Medium Access
- Retransmission control for example, HARQ (Hybrid Automatic Repeat reQuest) transmission processing
- HARQ Hybrid Automatic Repeat reQuest
- the downlink control signal is also subjected to transmission processing such as channel coding and inverse fast Fourier transform, and is transferred to the transmission / reception unit 103.
- the transmission / reception unit 103 converts the baseband signal output by precoding for each antenna from the baseband signal processing unit 104 to a radio frequency band and transmits the converted signal.
- the radio frequency signal frequency-converted by the transmission / reception unit 103 is amplified by the amplifier unit 102 and transmitted from the transmission / reception antenna 101.
- the transmitter / receiver, the transmission / reception circuit, or the transmission / reception device can be configured based on common recognition in the technical field according to the present invention.
- the transmission / reception part 103 may be comprised as an integral transmission / reception part, and may be comprised from a transmission part and a receiving part.
- the radio frequency signal received by the transmission / reception antenna 101 is amplified by the amplifier unit 102.
- the transmission / reception unit 103 receives the UL signal amplified by the amplifier unit 102.
- the transmission / reception unit 103 converts the frequency of the received signal into a baseband signal and outputs it to the baseband signal processing unit 104.
- the baseband signal processing unit 104 performs Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing, error correction on UL data included in the input UL signal. Decoding, MAC retransmission control reception processing, RLC layer and PDCP layer reception processing are performed and transferred to the upper station apparatus 30 via the transmission path interface 106.
- the call processing unit 105 performs call processing such as communication channel setting and release, state management of the radio base station 10, and radio resource management.
- the transmission path interface 106 transmits and receives signals to and from the higher station apparatus 30 via a predetermined interface.
- the transmission path interface 106 transmits and receives (backhaul signaling) signals to and from the adjacent radio base station 10 via an interface between base stations (for example, an optical fiber compliant with CPRI (Common Public Radio Interface), X2 interface). Also good.
- CPRI Common Public Radio Interface
- X2 interface also good.
- the transmission / reception unit 103 transmits a DL signal (including at least one of a DL data signal, a DL control signal, and a DL reference signal) to the user terminal 20, and a UL signal (UL data signal) from the user terminal 20 is transmitted. , UL control signal and UL reference signal).
- the transmission / reception unit 103 receives UCI from the user terminal 20 using an uplink shared channel (for example, PUSCH) or an uplink control channel (for example, short PUCCH and / or long PUCCH).
- the UCI may include at least one of HARQ-ACK, CSI, SR, beam identification information (eg, beam index (BI)), and buffer status report (BSR) of a DL data channel (eg, PDSCH).
- the transmission / reception unit 103 controls the control information (for example, the format, the number of PUCCH units in the slot, the size of the PUCCH unit, the RS multiplexing method, the RS arrangement position, the RS, Presence / absence of RS, density of RS, presence / absence of SRS, resource for uplink control channel) may be transmitted by physical layer signaling (L1 signaling) and / or higher layer signaling.
- control information for example, the format, the number of PUCCH units in the slot, the size of the PUCCH unit, the RS multiplexing method, the RS arrangement position, the RS, Presence / absence of RS, density of RS, presence / absence of SRS, resource for uplink control channel.
- FIG. 8 is a diagram illustrating an example of a functional configuration of the radio base station according to the present embodiment. This figure mainly shows functional blocks of characteristic portions in the present embodiment, and the wireless base station 10 also has other functional blocks necessary for wireless communication.
- the baseband signal processing unit 104 includes a control unit 301, a transmission signal generation unit 302, a mapping unit 303, a reception signal processing unit 304, and a measurement unit 305.
- the control unit 301 controls the entire radio base station 10.
- the control unit 301 includes, for example, DL signal generation by the transmission signal generation unit 302, DL signal mapping by the mapping unit 303, UL signal reception processing (for example, demodulation) by the reception signal processing unit 304, and measurement unit 305. Control the measurement.
- control unit 301 schedules the user terminal 20. Specifically, the control unit 301 may perform scheduling and / or retransmission control of DL data and / or uplink shared channel based on UCI (for example, CSI and / or BI) from the user terminal 20.
- UCI for example, CSI and / or BI
- control unit 301 may control the configuration (format) of the uplink control channel (for example, the long PUCCH and / or the short PUCCH) and transmit control information related to the uplink control channel.
- control unit 301 may control the setting of the PUCCH resource. Specifically, the control unit 301 may perform control so that K PUCCH resource sets each including M PUCCH resources are configured in the user terminal based on the payload size of UCI.
- control unit 301 may control the UCI reception process using the PUCCH resource determined based on a predetermined field value and / or implicit instruction information in the DCI in the user terminal.
- the control unit 301 may control blind detection of the PUCCH resource.
- the control unit 301 may control the reception signal processing unit 304 so as to perform reception processing of UCI from the user terminal 20 based on the format of the uplink control channel.
- control unit 301 includes a first resource set based on upper layer signaling (for example, a resource set determined based on the UCI length among a plurality of resource sets set by the upper layer) and an upper layer connection (for example, The transmission resource for the uplink control channel may be determined based on a predetermined field in the downlink control information from one resource set of the second resource set before (RRC connection).
- upper layer signaling for example, a resource set determined based on the UCI length among a plurality of resource sets set by the upper layer
- RRC connection for example, The transmission resource for the uplink control channel may be determined based on a predetermined field in the downlink control information from one resource set of the second resource set before (RRC connection).
- the control unit 301 can be configured by a controller, a control circuit, or a control device described based on common recognition in the technical field according to the present invention.
- the transmission signal generation unit 302 generates a DL signal (including a DL data signal, a DL control signal, and a DL reference signal) based on an instruction from the control unit 301, and outputs the DL signal to the mapping unit 303.
- the transmission signal generation unit 302 can be a signal generator, a signal generation circuit, or a signal generation device described based on common recognition in the technical field according to the present invention.
- the mapping unit 303 maps the DL signal generated by the transmission signal generation unit 302 to a predetermined radio resource based on an instruction from the control unit 301, and outputs the DL signal to the transmission / reception unit 103.
- the mapping unit 303 can be a mapper, a mapping circuit, or a mapping device described based on common recognition in the technical field according to the present invention.
- the reception signal processing unit 304 performs reception processing (for example, demapping, demodulation, decoding, etc.) on UL signals (for example, including UL data signals, UL control signals, and UL reference signals) transmitted from the user terminal 20. I do. Specifically, the reception signal processing unit 304 may output a reception signal or a signal after reception processing to the measurement unit 305. Also, the received signal processing unit 304 performs UCI reception processing based on the uplink control channel configuration instructed from the control unit 301.
- reception processing for example, demapping, demodulation, decoding, etc.
- UL signals for example, including UL data signals, UL control signals, and UL reference signals
- the measurement unit 305 performs measurement on the received signal.
- the measurement part 305 can be comprised from the measuring device, measurement circuit, or measurement apparatus demonstrated based on common recognition in the technical field which concerns on this invention.
- the measurement unit 305 measures the UL channel quality based on, for example, the reception power (for example, RSRP (Reference Signal Received Power)) and / or the reception quality (for example, RSRQ (Reference Signal Received Quality)) of the UL reference signal. May be.
- the measurement result may be output to the control unit 301.
- FIG. 9 is a diagram illustrating an example of the overall configuration of the user terminal according to the present embodiment.
- the user terminal 20 includes a plurality of transmission / reception antennas 201 for MIMO transmission, an amplifier unit 202, a transmission / reception unit 203, a baseband signal processing unit 204, and an application unit 205.
- the radio frequency signals received by the plurality of transmission / reception antennas 201 are each amplified by the amplifier unit 202.
- Each transmitting / receiving unit 203 receives the DL signal amplified by the amplifier unit 202.
- the transmission / reception unit 203 converts the frequency of the received signal into a baseband signal and outputs it to the baseband signal processing unit 204.
- the baseband signal processing unit 204 performs FFT processing, error correction decoding, retransmission control reception processing, and the like on the input baseband signal.
- the DL data is transferred to the application unit 205.
- the application unit 205 performs processing related to layers higher than the physical layer and the MAC layer. Broadcast information is also transferred to the application unit 205.
- UL data is input from the application unit 205 to the baseband signal processing unit 204.
- the baseband signal processing unit 204 performs retransmission control transmission processing (for example, HARQ transmission processing), channel coding, rate matching, puncturing, discrete Fourier transform (DFT) processing, IFFT processing, and the like. Are transferred to each transmitting / receiving unit 203. Also for UCI, at least one of channel coding, rate matching, puncturing, DFT processing, and IFFT processing is performed and transferred to each transmission / reception section 203.
- the transmission / reception unit 203 converts the baseband signal output from the baseband signal processing unit 204 into a radio frequency band and transmits it.
- the radio frequency signal frequency-converted by the transmission / reception unit 203 is amplified by the amplifier unit 202 and transmitted from the transmission / reception antenna 201.
- the transmission / reception unit 203 receives a DL signal of a neurology (including a DL data signal, a DL control signal (DCI), and a DL reference signal) set in the user terminal 20, and receives a UL signal (corresponding to the neurology).
- a DL signal of a neurology including a DL data signal, a DL control signal (DCI), and a DL reference signal
- DCI DL control signal
- UL reference signal corresponding to the neurology
- the transmission / reception unit 203 transmits UCI to the radio base station 10 using an uplink shared channel (for example, PUSCH) or an uplink control channel (for example, short PUCCH and / or long PUCCH).
- an uplink shared channel for example, PUSCH
- an uplink control channel for example, short PUCCH and / or long PUCCH.
- the transmission / reception unit 203 may receive information indicating K PUCCH resource sets each including M PUCCH resources. Further, the transmission / reception unit 203 may receive higher layer control information (upper layer parameters).
- the transmission / reception unit 203 can be a transmitter / receiver, a transmission / reception circuit, or a transmission / reception device described based on common recognition in the technical field according to the present invention. Further, the transmission / reception unit 203 may be configured as an integral transmission / reception unit, or may be configured from a transmission unit and a reception unit.
- FIG. 10 is a diagram illustrating an example of a functional configuration of the user terminal according to the present embodiment.
- the functional block of the characteristic part in the present embodiment is mainly shown, and the user terminal 20 is assumed to have other functional blocks necessary for wireless communication.
- the baseband signal processing unit 204 included in the user terminal 20 includes a control unit 401, a transmission signal generation unit 402, a mapping unit 403, a reception signal processing unit 404, and a measurement unit 405. I have.
- the control unit 401 controls the entire user terminal 20. For example, the control unit 401 controls generation of the UL signal by the transmission signal generation unit 402, mapping of the UL signal by the mapping unit 403, reception processing of the DL signal by the reception signal processing unit 404, and measurement by the measurement unit 405.
- control unit 401 controls an uplink control channel used for UCI transmission from the user terminal 20 based on an explicit instruction from the radio base station 10 or an implicit determination in the user terminal 20.
- the control unit 401 controls transmission of the UCI.
- control unit 401 may control the configuration (format) of the uplink control channel (for example, long PUCCH and / or short PUCCH).
- the control unit 401 may control the format of the uplink control channel based on the control information from the radio base station 10. Further, the control unit 401 may control the PUCCH format (uplink control channel format) used for UCI transmission based on the information on fallback.
- PUCCH format uplink control channel format
- the control unit 401 also includes a first resource set based on upper layer signaling (for example, a resource set determined based on the UCI length among a plurality of resource sets set by the upper layer), and before the upper layer connection.
- a transmission resource (eg, PUCCH resource) for the uplink control channel is determined based on a predetermined field (eg, PUCCH resource identifier) in the downlink control information from one resource set for the second resource set for May be.
- control unit 401 may determine the transmission resource from the second resource set.
- control unit 401 may determine the resource set based on a value range of the predetermined field.
- control unit 401 determines a predetermined downlink control information format (for example, non-fallback DCI, DCI format 1_1, etc.) based on the number of resources in the first resource set or system information (for example, RMSI, SIB). The size of the predetermined field in fallback DCI, DCI format 1_0) may be determined.
- a predetermined downlink control information format for example, non-fallback DCI, DCI format 1_1, etc.
- the number of values associated with the resource set in the predetermined field may be smaller than 8.
- the control unit 401 can be configured by a controller, a control circuit, or a control device described based on common recognition in the technical field according to the present invention.
- the transmission signal generation unit 402 generates a UL signal (including UL data signal, UL control signal, UL reference signal, UCI) based on an instruction from the control unit 401 (for example, encoding, rate matching, puncturing, modulation) And the like are output to the mapping unit 403.
- the transmission signal generation unit 402 may be a signal generator, a signal generation circuit, or a signal generation device described based on common recognition in the technical field according to the present invention.
- the mapping unit 403 maps the UL signal generated by the transmission signal generation unit 402 to a radio resource based on an instruction from the control unit 401, and outputs the UL signal to the transmission / reception unit 203.
- the mapping unit 403 may be a mapper, a mapping circuit, or a mapping device described based on common recognition in the technical field according to the present invention.
- the reception signal processing unit 404 performs reception processing (for example, demapping, demodulation, decoding, etc.) on the DL signal (DL data signal, scheduling information, DL control signal, DL reference signal).
- the reception signal processing unit 404 outputs information received from the radio base station 10 to the control unit 401.
- the reception signal processing unit 404 outputs, for example, broadcast information, system information, higher layer control information by higher layer signaling such as RRC signaling, physical layer control information (L1 / L2 control information), and the like to the control unit 401.
- the received signal processing unit 404 can be configured by a signal processor, a signal processing circuit, or a signal processing device described based on common recognition in the technical field according to the present invention. Further, the reception signal processing unit 404 can constitute a reception unit according to the present invention.
- the measurement unit 405 measures the channel state based on a reference signal (for example, CSI-RS) from the radio base station 10 and outputs the measurement result to the control unit 401. Note that the channel state measurement may be performed for each CC.
- a reference signal for example, CSI-RS
- the measuring unit 405 can be composed of a signal processor, a signal processing circuit or a signal processing device, and a measuring device, a measurement circuit or a measuring device which are explained based on common recognition in the technical field according to the present invention.
- each functional block is realized using one device physically or logically coupled, or two or more devices physically or logically separated may be directly or indirectly (for example, (Using wired, wireless, etc.) and may be implemented using these multiple devices.
- a wireless base station, a user terminal, and the like may function as a computer that performs processing of the wireless communication method of the present disclosure.
- FIG. 11 is a diagram illustrating an example of a hardware configuration of a radio base station and a user terminal according to an embodiment.
- the wireless base station 10 and the user terminal 20 described above may be physically 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. Good.
- the term “apparatus” can be read as a circuit, a device, a unit, or the like.
- the hardware configurations of the radio base station 10 and the user terminal 20 may be configured to include one or a plurality of each device illustrated in the figure, or may be configured not to include some devices.
- processor 1001 may be implemented by one or more chips.
- Each function in the radio base station 10 and the user terminal 20 is calculated by causing the processor 1001 to perform calculations by reading predetermined software (programs) on hardware such as the processor 1001 and the memory 1002, for example, via the communication device 1004. This is realized by controlling communication or controlling at least one of reading and writing of data in the memory 1002 and the storage 1003.
- the processor 1001 controls the entire computer by operating an operating system, for example.
- the processor 1001 may be configured by a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, a register, and the like.
- CPU central processing unit
- the baseband signal processing unit 104 (204) and the call processing unit 105 described above may be realized by the processor 1001.
- the processor 1001 reads a program (program code), a software module, data, and the like from at least one of the storage 1003 and the communication device 1004 to the memory 1002, and executes various processes according to these.
- a program program code
- the control unit 401 of the user terminal 20 may be realized by a control program stored in the memory 1002 and operating in the processor 1001, and may be realized similarly for other functional blocks.
- the memory 1002 is a computer-readable recording medium such as a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), an EEPROM (Electrically EPROM), a RAM (Random Access Memory), or any other suitable storage medium. It may be configured by one.
- the memory 1002 may be called 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, and the like that can be executed to perform the wireless communication method according to an embodiment of the present disclosure.
- the storage 1003 is a computer-readable recording medium such as a flexible disk, a floppy (registered trademark) disk, a magneto-optical disk (for example, a compact disk (CD-ROM (Compact Disc ROM)), a digital versatile disk, Blu-ray® disk), removable disk, hard disk drive, smart card, flash memory device (eg, card, stick, key drive), magnetic stripe, database, server, or other suitable storage medium It may be constituted by.
- the storage 1003 may be referred to as an auxiliary storage device.
- the communication device 1004 is hardware (transmission / reception device) for performing communication between computers via at least one of a wired network and a wireless network, and is also referred to as a network device, a network controller, a network card, a communication module, or the like.
- the communication device 1004 includes, for example, a high-frequency switch, a duplexer, a filter, a frequency synthesizer, and the like in order to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). It may be constituted by.
- the transmission / reception antenna 101 (201), the amplifier unit 102 (202), the transmission / reception unit 103 (203), the transmission path interface 106, and the like described above may be realized by the communication device 1004.
- 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 (Light Emitting Diode) lamp, etc.) that performs output to the outside.
- the input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).
- the devices such as the processor 1001 and the memory 1002 are connected by a bus 1007 for communicating information.
- the bus 1007 may be configured using a single bus, or may be configured using a different bus for each device.
- the radio base station 10 and the user terminal 20 include a microprocessor, a digital signal processor (DSP), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), an FPGA (Field Programmable Gate Array), and the like. It may be configured including hardware, and a part or all of each functional block may be realized using the hardware. For example, the processor 1001 may be implemented using at least one of these hardware.
- DSP digital signal processor
- ASIC Application Specific Integrated Circuit
- PLD Programmable Logic Device
- FPGA Field Programmable Gate Array
- the terms described in the present disclosure and the terms necessary for understanding the present disclosure may be replaced with terms having the same or similar meaning.
- the signal may be a message.
- the reference signal may be abbreviated as RS (Reference Signal), and may be referred to as a pilot, a pilot signal, or the like depending on an applied standard.
- a component carrier CC: Component Carrier
- CC Component Carrier
- the radio frame may be configured by one or a plurality of periods (frames) in the time domain.
- Each of the one or more periods (frames) constituting the radio frame may be referred to as a subframe.
- a subframe may be composed of one or more slots in the time domain.
- the subframe may have a fixed length of time (eg, 1 ms) that does not depend on numerology.
- the neurology may be a communication parameter applied to at least one of transmission and reception of a certain signal or channel.
- SCS SubCarrier Spacing
- bandwidth For example, subcarrier spacing (SCS: SubCarrier Spacing), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI: Transmission Time Interval), number of symbols per TTI, radio frame configuration, transceiver in frequency domain
- TTI Transmission Time Interval
- number of symbols per TTI radio frame configuration
- transceiver in frequency domain It may indicate at least one of a specific filtering process to be performed and a specific windowing process to be performed by the transceiver in the time domain.
- a slot may be configured with one or a plurality of symbols (OFDM (Orthogonal Frequency Division Multiplexing) symbol, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbol, etc.) in the time domain. Further, the slot may be a time unit based on the numerology.
- OFDM Orthogonal Frequency Division Multiplexing
- SC-FDMA Single Carrier Frequency Division Multiple Access
- the slot may include a plurality of mini slots. Each minislot may be configured with one or more symbols in the time domain. The minislot may also be called a subslot. A mini-slot may be composed of fewer symbols than slots.
- PDSCH (or PUSCH) transmitted in units of time larger than a minislot may be referred to as PDSCH (PUSCH) mapping type A.
- PDSCH (or PUSCH) transmitted using a minislot may be referred to as a PDSCH (PUSCH) mapping type B.
- Radio frame, subframe, slot, minislot, and symbol all represent time units when transmitting signals. Different names may be used for the radio frame, subframe, slot, minislot, and symbol.
- one subframe may be called 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 the TTI may be a subframe (1 ms) in the existing LTE, a period shorter than 1 ms (for example, 1-13 symbols), or a period longer than 1 ms. It may be.
- a unit representing TTI may be called a slot, a minislot, or the like instead of a subframe.
- TTI means, for example, a minimum time unit for scheduling in wireless communication.
- a radio base station performs scheduling for assigning radio resources (frequency bandwidth, transmission power, etc. that can be used in each user terminal) to each user terminal in units of TTI.
- the definition of TTI is not limited to this.
- the TTI may be a transmission time unit such as a channel-encoded data packet (transport block), a code block, or a code word, or may be a processing unit such as scheduling or link adaptation.
- a time interval for example, the number of symbols
- a transport block, a code block, a code word, etc. may be shorter than the TTI.
- one or more TTIs may be the minimum scheduling unit. Further, the number of slots (the number of mini-slots) constituting the minimum time unit of the scheduling may be controlled.
- a TTI having a time length of 1 ms may be called a normal TTI (TTI in LTE Rel. 8-12), a normal TTI, a long TTI, a normal subframe, a normal subframe, a long subframe, a slot, or the like.
- a TTI shorter than a normal TTI may be referred to as a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a minislot, a subslot, a slot, and the like.
- a long TTI (eg, normal TTI, subframe, etc.) may be read as a TTI having a time length exceeding 1 ms, and a short TTI (eg, shortened TTI) is less than the TTI length of the long TTI and 1 ms. It may be replaced with a TTI having the above TTI length.
- a 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 (subcarriers) in the frequency domain.
- the RB may include one or a plurality of symbols in the time domain, and may have a length of 1 slot, 1 mini slot, 1 subframe, or 1 TTI.
- One TTI and one subframe may each be composed of one or a plurality of resource blocks.
- One or more RBs include physical resource blocks (PRB), sub-carrier groups (SCG), resource element groups (REG), PRB pairs, RB pairs, etc. May be called.
- PRB physical resource blocks
- SCG sub-carrier groups
- REG resource element groups
- PRB pairs RB pairs, etc. May be called.
- the resource block may be configured by one or a plurality of resource elements (RE: Resource Element).
- RE Resource Element
- 1RE may be a radio resource region of 1 subcarrier and 1 symbol.
- the structure of the above-described radio frame, subframe, slot, minislot, symbol, etc. is merely an example.
- the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in the slot, the number of symbols and RBs included in the slot or minislot, and the RB The number of subcarriers, the number of symbols in the TTI, the symbol length, the cyclic prefix (CP) length, and the like can be variously changed.
- information, parameters, and the like described in the present disclosure may be expressed using absolute values, may be expressed using relative values from predetermined values, or may be expressed using other corresponding information. May be represented.
- the radio resource may be indicated by a predetermined index.
- the information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies.
- data, commands, 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 May be represented by a combination of
- information, signals, and the like can be output from the upper layer to at least one of the lower layer and the lower layer to the upper layer.
- Information, signals, and the like may be input / output via a plurality of network nodes.
- the input / output information, signals, etc. may be stored in a specific location (for example, a memory) or may be managed using a management table. Input / output information, signals, and the like can be overwritten, updated, or added. The output information, signals, etc. may be deleted. Input information, signals, and the like may be transmitted to other devices.
- information notification includes physical layer signaling (eg, downlink control information (DCI), uplink control information (UCI)), upper layer signaling (eg, RRC (Radio Resource Control) signaling), It may be implemented by broadcast information (Master Information Block (MIB), System Information Block (SIB), etc.), MAC (Medium Access Control) signaling), other signals, or a combination thereof.
- DCI downlink control information
- UCI uplink control information
- RRC Radio Resource Control
- MIB Master Information Block
- SIB System Information Block
- MAC Medium Access Control
- the physical layer signaling may be referred to as L1 / L2 (Layer 1 / Layer 2) control information (L1 / L2 control signal), L1 control information (L1 control signal), or the like.
- the RRC signaling may be referred to as an RRC message, and may be, for example, an RRC connection setup message, an RRC connection reconfiguration message, or the like.
- the MAC signaling may be notified using, for example, a MAC control element (MAC CE (Control Element)).
- notification of predetermined information is not limited to explicit notification, but implicitly (for example, by not performing notification of the predetermined information or other information) May be performed).
- the determination may be performed by a value represented by 1 bit (0 or 1), or may be performed by a boolean value represented by true or false.
- the comparison may be performed by numerical comparison (for example, comparison with a predetermined value).
- software, instructions, information, etc. may be transmitted / received via a transmission medium.
- the software uses websites using at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and wireless technology (infrared, microwave, etc.) When transmitted from a server or other remote source, at least one of these wired and wireless technologies is included within the definition of a transmission medium.
- system and “network” as used in this disclosure may be used interchangeably.
- base station BS
- radio base station fixed station
- NodeB NodeB
- eNodeB eNodeB
- gNodeB gNodeB
- a base station may also be called terms such as a macro cell, a small cell, a femto cell, and a pico cell.
- the base station can accommodate one or a plurality of (for example, three) cells (also called sectors). If the base station accommodates multiple cells, the entire coverage area of the base station can be partitioned into multiple smaller areas, each smaller area being a base station subsystem (eg, an indoor small base station (RRH: Remote Radio Head)) can also provide communication services.
- a base station subsystem eg, an indoor small base station (RRH: Remote Radio Head)
- RRH Remote Radio Head
- the terms “cell” or “sector” refer to part or all of the coverage area of at least one of a base station and a base station subsystem that provides communication services in this coverage.
- MS mobile station
- UE user equipment
- Mobile station subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless 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 referred to as a transmission device, a reception device, or the like.
- the base station and the mobile station may be a device mounted on the mobile body, the mobile body itself, or the like.
- the moving body may be a vehicle (for example, a car, an airplane, etc.), an unattended moving body (for example, a drone, an autonomous driving vehicle, etc.), or a robot (manned or unmanned).
- at least one of the base station and the mobile station includes a device that does not necessarily move during a communication operation.
- the radio base station in the present disclosure may be replaced with a user terminal.
- the communication between the radio base station and the user terminal is replaced with communication between a plurality of user terminals (for example, D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc. may be called))
- a plurality of user terminals for example, D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc. may be called)
- the user terminal 20 may have a function that the wireless base station 10 has.
- words such as “up” and “down” may be read as words corresponding to communication between terminals (for example, “side”).
- an uplink channel, a downlink channel, etc. may be read as a side channel.
- the user terminal in the present disclosure may be replaced with a radio base station.
- the wireless base station 10 may have a function that the user terminal 20 has.
- the operation performed by the base station may be performed by the upper node in some cases.
- various operations performed for communication with a terminal may include a base station and one or more network nodes other than the base station (for example, It is obvious that this can be done by MME (Mobility Management Entity), S-GW (Serving-Gateway), etc., but not limited thereto) or a combination thereof.
- MME Mobility Management Entity
- S-GW Serving-Gateway
- each aspect / embodiment described in the present disclosure may be used alone, may be used in combination, or may be switched according to execution. Further, the order of the processing procedures, sequences, flowcharts, and the like of each aspect / embodiment described in the present disclosure may be changed as long as there is no contradiction. For example, the methods described in this disclosure present elements of the various steps using an exemplary order and are not limited to the specific order presented.
- Each aspect / embodiment described in the present disclosure includes LTE (Long Term Evolution), LTE-A (LTE-Advanced), LTE-B (LTE-Beyond), SUPER 3G, IMT-Advanced 4G (4th generation mobile communication). system), 5G (5th generation mobile communication system), FRA (Future Radio Access), New-RAT (Radio Access Technology), NR (New Radio), NX (New radio access), FX (Future generation radio access), GSM (Registered trademark) (Global System for Mobile communications), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.
- the present invention may be applied to a system using other appropriate wireless communication methods, a next-generation system extended based on these, and the like.
- a plurality of systems may be combined and applied (for example, a combination of LTE or LTE-A and 5G).
- the phrase“ based on ”does not mean“ based only on, ”unless expressly specified otherwise.
- the phrase “based on” means both “based only on” and “based at least on.”
- any reference to elements using designations such as “first”, “second”, etc. as used in this disclosure does not generally limit the amount or order of those elements. These designations can be used in this disclosure as a convenient way to distinguish between two or more elements. Thus, reference to the first and second elements does not mean that only two elements can be employed or that the first element must precede the second element in some way.
- determining may encompass a wide variety of actions. For example, “determination (decision)” includes determination, calculation, calculation, processing, derivation, investigating, looking up (eg, table, (Searching in a database or another data structure), ascertaining, etc. may be considered to be “determining”.
- determination (decision) includes receiving (for example, receiving information), transmitting (for example, transmitting information), input (input), output (output), access ( accessing) (e.g., accessing data in memory), etc. may be considered to be “determining”.
- determination is considered to be “determination (resolving)”, “selecting”, “choosing”, “establishing”, “comparing”, etc. Also good. That is, “determination (determination)” may be regarded as “determination (determination)” of some operation.
- the “maximum transmission power” described in this disclosure may mean the maximum value of the transmission power, the nominal maximum transmission power (the nominal UE maximum transmit power), or the rated maximum transmission power (the rated UE maximum transmit power).
- connection is any direct or indirect connection or coupling between two or more elements. And may include the presence of one or more intermediate elements between two elements “connected” or “coupled” to each other.
- the coupling or connection between the elements may be physical, logical, or a combination thereof. For example, “connection” may be read as “access”.
- radio frequency domain microwave It can be considered to be “connected” or “coupled” to each other using electromagnetic energy having a wavelength in the region, light (both visible and invisible) region, and the like.
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Abstract
Description
・PUCCHの割り当てが開始されるシンボル(開始シンボル)
・スロット内でPUCCHに割り当てられるシンボル数(PUCCHに割り当てられる期間)
・PUCCHの割り当てが開始されるリソースブロック(物理リソースブロック(PRB:Physical Resource Block))のインデックス
・PUCCHに割り当てられるPRBの数
・PUCCHに周波数ホッピングを有効化するか否か
・周波数ホッピングが有効な場合の第2ホップの周波数リソース、初期巡回シフト(CS:Cyclic Shift)のインデックス
・時間領域(time-domain)における直交拡散符号(例えば、OCC:Orthogonal Cover Code)のインデックス、離散フーリエ変換(DFT)前のブロック拡散に用いられるOCCの長さ(OCC長、拡散率等ともいう)
・DFT後のブロック拡散(block-wise spreading)に用いられるOCCのインデックス
(1)ユーザ端末が、プリアンブル(ランダムアクセスプリアンブル、ランダムアクセスチャネル(PRACH:Physical Random Access Channel)、メッセージ1(Msg.1)等ともいう)を送信する。
(2)無線基地局は、当該プリアンブルを検出するとランダムアクセスレスポンス(RAR:Random Access Response、メッセージ2等ともいう)を送信する。
(3)ユーザ端末は、メッセージ2に含まれるタイミングアドバンス(TA)に基づいて上りの同期を確立し、PUSCH用いて上位レイヤ(L2/L3)の制御メッセージ(メッセージ3)を送信する。当該制御メッセージには、ユーザ端末の識別子(例えば、C-RNTI(Cell-Radio Network Temporary Identifier))が含まれる。
(4)無線基地局は、上位レイヤの制御メッセージに応じて、PDSCHを用いて、衝突解決用メッセージ(Contention resolution message、メッセージ4)を送信する。
(5)ユーザ端末は、PUCCHを用いて、当該メッセージ4のHARQ-ACKを無線基地局に送信する。
・制御リソース単位(CCE:Control Resource Element)のインデックス
・制御リソースセット(CORESET:Control Resource Set)のインデックス
・サーチスペースのインデックス
・PDSCHに割り当てられる周波数リソース(例えば、PRG:Precoding Resource Block Group、RBG:Resource Block Group又はPRB:Physical Resource Block)のインデックス(例えば、開始インデックス)
・送信電力制御(TPC:Transmission Power Control)コマンド用のフィールド値
・PDCCH及び/又はPDSCHの送信構成識別子(TCI:Transmission Configuration Indicator)の状態(TCI状態)
・UCIのビット数
・PDCCH及び/又はPDSCHの復調用参照信号(DMRS:Demodulation Reference Signal)の構成情報
・HARQ-ACK用のコードブックのタイプ
・PUCCHに割り当てられる期間(シンボル数、PUCCH期間)を示す情報、例えば、2、4、10、14シンボルのいずれかを示す情報
・周波数ホッピングが適用される場合にPUCCHに割り当てられる周波数リソースの決定に用いられるオフセット(PRBオフセット、周波数オフセット、セル固有PRBオフセット)を示す情報
・PUCCHの開始シンボル(Starting Symbol)
・所定の帯域幅のどの方向(direction)からホッピングするかを示す情報(ホッピング方向)、例えば、第1ホップを小さいインデックス番号のPRBとし、第2ホップを大きいインデックス番号のPRBとすることを示す情報(例えば、“1”)、又は、第1ホップを大きいインデックス番号のPRBとし、第2ホップを小さいインデックス番号のPRBとすることを示す情報(例えば、“2”)
・周波数ホッピングが適用される場合にPUCCHに割り当てられる周波数リソースの決定に用いられるオフセット(PRBオフセット、周波数オフセット、UE固有PRBオフセット)を示す情報
・初期巡回シフト(CS:Cyclic Shift)のインデックスを示す情報
・下り制御チャネル(例えば、PDCCH:Physical Downlink Control Channel)が割り当てられる制御リソース単位(例えば、CCE:Control Resource Element)のインデックス
・当該制御リソース単位のアグリゲーションレベル
第1の態様において、所定フィールドのサイズは固定されてもよい。例えば、所定フィールドのサイズは、3ビットである。
所定フィールドにおいて、所定範囲内の値のみがPUCCHリソースの設定に用いられ、所定範囲外の値がPUCCHリソースの設定に用いられなくてもよい。所定範囲は、少なくとも1つの所定ビットによって表される値の範囲であってもよい。所定範囲は、コードポイントの所定の範囲であってもよい。言い換えれば、所定フィールドの値の候補の数は、8より小さくてもよい。
1≦M≦4である場合、所定ビットは所定フィールドの3ビットの中の2ビットであってもよい。
Mが0である場合、UEは、RRC接続前のためのPUCCHリソースセット(第2PUCCHリソースセット)の中から所定のPUCCHリソースを選択してもよい。第2PUCCHリソースセットは、規定された複数のPUCCHリソースセットの中からRMSIによって指定されてもよいし、予め設定されてもよいし、仕様によって規定されてもよい。所定のPUCCHリソースは、第2PUCCHリソースセットの中の最初、または最小インデックスのPUCCHリソースであってもよい。
UEは、黙示値が0であると想定する。
UEは、PUCCHをトリガするDCI(PDSCHのスケジューリングのためのDCI、所定フィールドを含むDCI)のためのPDCCHのCCEインデックスに基づいて、黙示値を決定する。例えば、黙示値は、CCEインデックスをアグリゲーションレベルで正規化した値、すなわち、(CCEインデックス/アグリゲーションレベル) mod 2であってもよい。
所定フィールドの値が所定範囲内であるか否かによって、異なるPUCCHリソースセットが用いられてもよい。
第2の態様において、所定フィールドのサイズは可変であってもよい。例えば、所定フィールドのサイズは、0~3ビットである。
フォールバック(fallback)DCIにおける所定フィールドのサイズが固定であり、ノンフォールバック(non-fallback)DCIにおける所定フィールドのサイズが可変であってもよい。例えば、フォールバックDCIにおける所定フィールドのサイズが3ビットであり、ノンフォールバックDCI(所定のDCIフォーマット)における所定フィールドのサイズが0~3ビットであってもよい。
DCIがフォールバックDCIであるかノンフォールバックDCIであるかに関わらず、DCIにおける所定フィールドのサイズが可変であってもよい。例えば、DCIにおける所定フィールドのサイズが0~3ビットであってもよい。
以下、本実施の形態に係る無線通信システムの構成について説明する。この無線通信システムでは、上記各態様に係る無線通信方法が適用される。なお、上記各態様に係る無線通信方法は、それぞれ単独で適用されてもよいし、少なくとも2つを組み合わせて適用されてもよい。
図7は、本実施の形態に係る無線基地局の全体構成の一例を示す図である。無線基地局10は、複数の送受信アンテナ101と、アンプ部102と、送受信部103と、ベースバンド信号処理部104と、呼処理部105と、伝送路インターフェース106とを備えている。なお、送受信アンテナ101、アンプ部102、送受信部103は、それぞれ1つ以上を含むように構成されてもよい。
図9は、本実施の形態に係るユーザ端末の全体構成の一例を示す図である。ユーザ端末20は、MIMO伝送のための複数の送受信アンテナ201と、アンプ部202と、送受信部203と、ベースバンド信号処理部204と、アプリケーション部205と、を備えている。
なお、上記実施形態の説明に用いたブロック図は、機能単位のブロックを示している。これらの機能ブロック(構成部)は、ハードウェア及びソフトウェアの少なくとも一方の任意の組み合わせによって実現される。また、各機能ブロックの実現方法は特に限定されない。すなわち、各機能ブロックは、物理的又は論理的に結合した1つの装置を用いて実現されてもよいし、物理的又は論理的に分離した2つ以上の装置を直接的又は間接的に(例えば、有線、無線などを用いて)接続し、これら複数の装置を用いて実現されてもよい。
なお、本開示において説明した用語及び本開示の理解に必要な用語については、同一の又は類似する意味を有する用語と置き換えてもよい。例えば、チャネル及びシンボルの少なくとも一方は信号(シグナリング)であってもよい。また、信号はメッセージであってもよい。参照信号は、RS(Reference Signal)と略称することもでき、適用される標準によってパイロット(Pilot)、パイロット信号などと呼ばれてもよい。また、コンポーネントキャリア(CC:Component Carrier)は、セル、周波数キャリア、キャリア周波数などと呼ばれてもよい。
Claims (6)
- 上り制御チャネルを用いて上り制御情報を送信する送信部と、
上位レイヤシグナリングに基づく第1リソースセットと、上位レイヤ接続前のための第2リソースセットと、の1つのリソースセットから、前記上り制御チャネルのための送信リソースを、下り制御情報内の所定フィールドに基づいて決定する制御部と、を有することを特徴とするユーザ端末。 - 前記制御部は、前記第1リソースセット内のリソースの数が0である場合、前記第2リソースセットから、前記送信リソースを決定することを特徴とする請求項1に記載のユーザ端末。
- 前記制御部は、前記所定フィールドの値の範囲に基づいて前記リソースセットを決定することを特徴とする請求項1に記載のユーザ端末。
- 前記制御部は、前記第1リソースセット内のリソースの数、又はシステム情報に基づいて、所定の下り制御情報フォーマットにおける前記所定フィールドのサイズを決定することを特徴とする請求項1から請求項3のいずれかに記載のユーザ端末。
- 前記所定フィールドにおいて前記リソースセットに関連付けられた値の数が、8より小さいことを特徴とする請求項1から請求項4のいずれかに記載のユーザ端末。
- 上り制御チャネルを用いて上り制御情報を受信する受信部と、
上位レイヤシグナリングに基づく第1リソースセットと、上位レイヤ接続前のための第2リソースセットと、の1つのリソースセットから、前記上り制御チャネルのための送信リソースを、下り制御情報内の所定フィールドに基づいて決定する制御部と、を有することを特徴とする無線基地局。
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US17/051,661 US20210160910A1 (en) | 2018-05-02 | 2018-05-02 | User terminal and radio base station |
JP2020517006A JP7108025B2 (ja) | 2018-05-02 | 2018-05-02 | 端末、無線通信方法、基地局及びシステム |
CN201880094937.6A CN112314028A (zh) | 2018-05-02 | 2018-05-02 | 用户终端以及无线基站 |
PCT/JP2018/017561 WO2019211916A1 (ja) | 2018-05-02 | 2018-05-02 | ユーザ端末及び無線基地局 |
EP18917077.2A EP3790331A4 (en) | 2018-05-02 | 2018-05-02 | User terminal and wireless base station |
BR112020022217-8A BR112020022217A2 (pt) | 2018-05-02 | 2018-05-02 | terminal de usuário e estação rádio base |
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- 2018-05-02 EP EP18917077.2A patent/EP3790331A4/en active Pending
- 2018-05-02 CN CN201880094937.6A patent/CN112314028A/zh active Pending
- 2018-05-02 BR BR112020022217-8A patent/BR112020022217A2/pt unknown
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113498206A (zh) * | 2020-04-08 | 2021-10-12 | 展讯半导体(南京)有限公司 | 信息传输方法及装置 |
WO2021204184A1 (zh) * | 2020-04-08 | 2021-10-14 | 展讯半导体(南京)有限公司 | 信息传输方法及装置 |
CN114866200A (zh) * | 2021-01-20 | 2022-08-05 | 展讯通信(上海)有限公司 | 上行控制信道的发送方法、装置、服务器和终端设备 |
Also Published As
Publication number | Publication date |
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JPWO2019211916A1 (ja) | 2021-05-13 |
JP7108025B2 (ja) | 2022-07-27 |
CN118354454A (zh) | 2024-07-16 |
CN112314028A (zh) | 2021-02-02 |
US20210160910A1 (en) | 2021-05-27 |
EP3790331A4 (en) | 2021-12-29 |
BR112020022217A2 (pt) | 2021-02-02 |
EP3790331A1 (en) | 2021-03-10 |
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