WO2018226054A1 - Procédé de signalisation associé à l'attribution de ressources dans un système de communications sans fil, et dispositif l'utilisant - Google Patents

Procédé de signalisation associé à l'attribution de ressources dans un système de communications sans fil, et dispositif l'utilisant Download PDF

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Publication number
WO2018226054A1
WO2018226054A1 PCT/KR2018/006496 KR2018006496W WO2018226054A1 WO 2018226054 A1 WO2018226054 A1 WO 2018226054A1 KR 2018006496 W KR2018006496 W KR 2018006496W WO 2018226054 A1 WO2018226054 A1 WO 2018226054A1
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Prior art keywords
resource
rbg
size
resource allocation
terminal
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PCT/KR2018/006496
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English (en)
Korean (ko)
Inventor
황대성
이윤정
서인권
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엘지전자 주식회사
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Priority claimed from KR1020180065586A external-priority patent/KR101950995B1/ko
Application filed by 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to EP21184329.7A priority Critical patent/EP3926881B1/fr
Priority to JP2019568063A priority patent/JP7155166B2/ja
Priority to CN201880047556.2A priority patent/CN110945817B/zh
Priority to EP18813207.0A priority patent/EP3633902B1/fr
Publication of WO2018226054A1 publication Critical patent/WO2018226054A1/fr
Priority to US16/706,434 priority patent/US11477791B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path

Definitions

  • the present invention relates to wireless communication, and more particularly, to a signaling method related to resource allocation in a wireless communication system and an apparatus using the method.
  • Massive Machine Type Communications which connects multiple devices and objects to provide various services anytime and anywhere, is also one of the major issues to be considered in next-generation communication.
  • Next-generation wireless access technologies that take into account improved mobile broadband communications, massive MTC, and ultra-reliable and low latency communications (URLLC) It may be referred to as new radio access technology (RAT) or new radio (NR).
  • RAT new radio access technology
  • NR new radio
  • the band portion may be used to allocate some bands for the terminal that is difficult to support the broadband in a wireless communication system using a wide band.
  • Resources allocated to the UE in this band portion may be performed in a resource block group (RBG) unit. At this time, it may be a problem how to determine the size of the RBG.
  • RBG resource block group
  • the base station may use interleaving in allocating resources to the terminal.
  • Interleaving may be mapping a virtual resource block that is a logical resource block to a physical resource block. It is necessary to define how the unit of interleaving and the unit of resource allocated to the terminal are related, how should they be signaled, and the like.
  • the present invention proposes a method and apparatus for allocating resources in a wireless communication system.
  • the present invention has been made in an effort to provide a signaling method and an apparatus using the resource allocation related signaling in a wireless communication system.
  • a method for signaling resource allocation related to a base station in a wireless communication system transmits first information indicating a first resource unit used for interleaving to the terminal through an upper layer signal, and performs interleaving on a specific resource for the terminal in the first resource unit.
  • the first information may be instructed to the terminal separately from the second information indicating a second resource unit used by the base station in resource allocation to the terminal.
  • the interleaving may be to map a virtual resource block to a physical resource block.
  • the first resource unit may be different from the second resource unit.
  • the higher layer signal may be a radio resource control (RRC) signal.
  • RRC radio resource control
  • the second resource unit may be determined based on the number of resource blocks constituting the band and the second information.
  • an apparatus in another aspect, includes a transceiver that transmits and receives a wireless signal and a processor that operates in conjunction with the transceiver, the processor using a first layer for interleaving via a higher layer signal. Transmitting first information indicating a resource unit to a terminal, and performing interleaving on a specific resource for the terminal in the first resource unit, wherein the first information is allocated by the device to the terminal; It is characterized in that the terminal is indicated separately from the second information indicating the second resource unit to be used during allocation.
  • a method of determining a size of a resource block group in a wireless communication system includes: number of resource block groups (RBGs) for a downlink band including a plurality of (N DL RB ) resource blocks (N) RBG ) and determine the size of each of the number N RBG resource block groups, wherein one resource block group in which the plurality of N DL RB resource blocks are configured for the downlink band If it is not a multiple of P, the size of each of the remaining resource block groups except for one of the number N RBG resource block groups is the size P of the resource block group configured for the downlink band.
  • the size of the excluded one resource block group may be resource blocks excluding the remaining resource block groups from the plurality of N DL RB resource blocks.
  • the resource block group may be composed of a plurality of resource blocks.
  • the size P of the resource block group may indicate how many resource blocks the resource block group is composed of.
  • a method of operating a terminal in a wireless communication system includes receiving first information indicating a first resource unit to be used for interleaving through an upper layer signal from a base station, and receiving the first information as the first resource unit. Receive an interleaved specific resource from the base station, wherein the first information is indicated separately from the second information indicating a second resource unit used by the base station in resource allocation for the terminal. It is done.
  • a terminal in another aspect, includes a transceiver for transmitting and receiving a radio signal and a processor operating in combination with the transceiver, wherein the processor is configured to use for interleaving through a higher layer signal.
  • the second information indicating the second resource unit used at the time of) is separately indicated.
  • a method of determining a size of a resource allocation unit may be defined so that there is no ambiguity between a base station and a terminal and resource allocation can be efficiently performed.
  • multiplexing may be facilitated when allocating resources to different terminals.
  • FIG 1 illustrates an existing wireless communication system.
  • FIG. 2 is a block diagram illustrating a radio protocol architecture for a user plane.
  • FIG. 3 is a block diagram illustrating a radio protocol structure for a control plane.
  • NG-RAN new generation radio access network
  • FIG. 5 illustrates a frame structure that can be applied in the NR.
  • FIG. 7 is a diagram showing the difference between the conventional control area and the CORESET in the NR.
  • FIG 9 illustrates a method for determining a resource block group (RBG) size according to an embodiment of the present invention.
  • FIG. 10 is a specific example of determining a resource block group size according to FIG. 9.
  • FIG. 11 shows an example for resource allocation type 1.
  • FIG. 13 illustrates a signaling method of an apparatus in a wireless communication system according to the present invention.
  • FIG. 14 is a block diagram illustrating an apparatus in which an embodiment of the present invention is implemented.
  • E-UTRAN Evolved-UMTS Terrestrial Radio Access Network
  • LTE Long Term Evolution
  • the E-UTRAN includes a base station (BS) 20 that provides a control plane and a user plane to a user equipment (UE).
  • the terminal 10 may be fixed or mobile and may be called by other terms such as a mobile station (MS), a user terminal (UT), a subscriber station (SS), a mobile terminal (MT), a wireless device (Wireless Device), and the like.
  • the base station 20 refers to a fixed station communicating with the terminal 10, and may be referred to by other terms such as an evolved-NodeB (eNB), a base transceiver system (BTS), an access point, and the like.
  • eNB evolved-NodeB
  • BTS base transceiver system
  • access point and the like.
  • the base stations 20 may be connected to each other through an X2 interface.
  • the base station 20 is connected to a Serving Gateway (S-GW) through an MME (Mobility Management Entity) and an S1-U through an Evolved Packet Core (EPC) 30, more specifically, an S1-MME through an S1 interface.
  • S-GW Serving Gateway
  • MME Mobility Management Entity
  • EPC Evolved Packet Core
  • EPC 30 is composed of MME, S-GW and P-GW (Packet Data Network-Gateway).
  • the MME has information about the access information of the terminal or the capability of the terminal, and this information is mainly used for mobility management of the terminal.
  • S-GW is a gateway having an E-UTRAN as an endpoint
  • P-GW is a gateway having a PDN as an endpoint.
  • Layers of the Radio Interface Protocol between the terminal and the network are based on the lower three layers of the Open System Interconnection (OSI) reference model, which is widely known in communication systems.
  • L2 second layer
  • L3 third layer
  • the RRC Radio Resource Control
  • the RRC layer located in the third layer plays a role of controlling radio resources between the terminal and the network. To this end, the RRC layer exchanges an RRC message between the terminal and the base station.
  • FIG. 2 is a block diagram illustrating a radio protocol architecture for a user plane.
  • 3 is a block diagram illustrating a radio protocol structure for a control plane.
  • the user plane is a protocol stack for user data transmission
  • the control plane is a protocol stack for control signal transmission.
  • a physical layer (PHY) layer provides an information transfer service to a higher layer using a physical channel.
  • the physical layer is connected to a medium access control (MAC) layer, which is an upper layer, through a transport channel. Data is moved between the MAC layer and the physical layer through the transport channel. Transport channels are classified according to how and with what characteristics data is transmitted over the air interface.
  • MAC medium access control
  • the physical channel may be modulated by an orthogonal frequency division multiplexing (OFDM) scheme and utilizes time and frequency as radio resources.
  • OFDM orthogonal frequency division multiplexing
  • the functions of the MAC layer include mapping between logical channels and transport channels and multiplexing / demultiplexing into transport blocks provided as physical channels on transport channels of MAC service data units (SDUs) belonging to the logical channels.
  • the MAC layer provides a service to a Radio Link Control (RLC) layer through a logical channel.
  • RLC Radio Link Control
  • RLC layer Functions of the RLC layer include concatenation, segmentation, and reassembly of RLC SDUs.
  • QoS Quality of Service
  • the RLC layer has a transparent mode (TM), an unacknowledged mode (UM), and an acknowledged mode (Acknowledged Mode).
  • TM transparent mode
  • UM unacknowledged mode
  • Acknowledged Mode acknowledged mode
  • AM Three modes of operation (AM).
  • AM RLC provides error correction through an automatic repeat request (ARQ).
  • the RRC (Radio Resource Control) layer is defined only in the control plane.
  • the RRC layer is responsible for the control of logical channels, transport channels, and physical channels in connection with configuration, re-configuration, and release of radio bearers.
  • RB means a logical path provided by the first layer (PHY layer) and the second layer (MAC layer, RLC layer, PDCP layer) for data transmission between the terminal and the network.
  • PDCP Packet Data Convergence Protocol
  • Functions of the Packet Data Convergence Protocol (PDCP) layer in the user plane include delivery of user data, header compression, and ciphering.
  • the functionality of the Packet Data Convergence Protocol (PDCP) layer in the control plane includes the transfer of control plane data and encryption / integrity protection.
  • the establishment of the RB means a process of defining characteristics of a radio protocol layer and a channel to provide a specific service, and setting each specific parameter and operation method.
  • RB can be further divided into SRB (Signaling RB) and DRB (Data RB).
  • SRB is used as a path for transmitting RRC messages in the control plane
  • DRB is used as a path for transmitting user data in the user plane.
  • the UE If an RRC connection is established between the RRC layer of the UE and the RRC layer of the E-UTRAN, the UE is in an RRC connected state, otherwise it is in an RRC idle state.
  • the downlink transmission channel for transmitting data from the network to the UE includes a BCH (Broadcast Channel) for transmitting system information and a downlink shared channel (SCH) for transmitting user traffic or control messages.
  • Traffic or control messages of a downlink multicast or broadcast service may be transmitted through a downlink SCH or may be transmitted through a separate downlink multicast channel (MCH).
  • the uplink transport channel for transmitting data from the terminal to the network includes a random access channel (RACH) for transmitting an initial control message and an uplink shared channel (SCH) for transmitting user traffic or control messages.
  • RACH random access channel
  • SCH uplink shared channel
  • BCCH broadcast control channel
  • PCCH paging control channel
  • CCCH common control channel
  • MCCH multicast control channel
  • MTCH multicast traffic
  • the physical channel is composed of several OFDM symbols in the time domain and several sub-carriers in the frequency domain.
  • One sub-frame consists of a plurality of OFDM symbols in the time domain.
  • the RB is a resource allocation unit and includes a plurality of OFDM symbols and a plurality of subcarriers.
  • each subframe may use specific subcarriers of specific OFDM symbols (eg, the first OFDM symbol) of the corresponding subframe for the physical downlink control channel (PDCCH), that is, the L1 / L2 control channel.
  • Transmission Time Interval is a unit time of subframe transmission.
  • new radio access technology new RAT
  • new radio NR
  • Massive Machine Type Communications which connects multiple devices and objects to provide various services anytime and anywhere, is also one of the major issues to be considered in next-generation communication.
  • communication system design considering services / terminals that are sensitive to reliability and latency has been discussed.
  • next-generation wireless access technologies in consideration of such extended mobile broadband communication, massive MTC, Ultra-Reliable and Low Latency Communication (URLLC), and the like are discussed in the present invention for convenience. Is called new RAT or NR.
  • NG-RAN new generation radio access network
  • the NG-RAN may include a gNB and / or eNB that provides a user plane and control plane protocol termination to the terminal.
  • 4 illustrates a case of including only gNB.
  • gNB and eNB are connected to each other by Xn interface.
  • the gNB and eNB are connected to a 5G Core Network (5GC) through an NG interface.
  • 5GC 5G Core Network
  • AMF access and mobility management function
  • UPF user plane function
  • gNB is inter-cell radio resource management (Inter Cell RRM), radio bearer management (RB control), connection mobility control (Radio Admission Control), radio admission control (Radio Admission Control), measurement configuration and provision (Measurement configuration & Provision) , Dynamic resource allocation, and the like.
  • AMF can provide functions such as NAS security, idle state mobility handling, and the like.
  • the UPF may provide functions such as mobility anchoring and PDU processing.
  • FIG. 5 illustrates a frame structure that can be applied in the NR.
  • a frame may include 10 ms (milliseconds) and include 10 subframes including 1 ms.
  • One or more slots may be included in the subframe according to subcarrier spacing.
  • the following table exemplifies a subcarrier spacing configuration ⁇ .
  • the following table shows the number of slots in a frame (N frame, ⁇ slot ), the number of slots in a subframe (N subframe, ⁇ slot ), the number of symbols in a slot (N slot symb ), etc., according to the subcarrier spacing configuration ⁇ . To illustrate.
  • a plurality of orthogonal frequency division multiplexing (OFDM) symbols may be included in the slot.
  • the plurality of OFDM symbols in the slot may be divided into downlink (denoted as D, downlink), flexible (denoted as X, and uplink, denoted as U).
  • the format of the slot may be determined according to which of the D, X, and U OFDM symbols in the slot.
  • the following table shows an example of a slot format.
  • the terminal may receive the format of the slot through the higher layer signal, the format of the slot through the DCI, or the format of the slot based on the combination of the higher layer signal and the DCI.
  • the physical downlink control channel may be composed of one or more control channel elements (CCEs) as shown in the following table.
  • CCEs control channel elements
  • the PDCCH may be transmitted through a resource composed of 1, 2, 4, 8, or 16 CCEs.
  • the CCE is composed of six resource element groups (REGs), and one REG is composed of one resource block in the frequency domain and one orthogonal frequency division multiplexing (OFDM) symbol in the time domain.
  • REGs resource element groups
  • OFDM orthogonal frequency division multiplexing
  • CORESET control resource set
  • the CORESET may be configured of N CORESET RB resource blocks in the frequency domain and may be configured by N CORESET symb ⁇ ⁇ 1, 2, 3 ⁇ symbols in the time domain.
  • N CORESET RB , N CORESET symb may be provided by a base station through a higher layer signal.
  • a plurality of CCEs (or REGs) may be included in the CORESET.
  • the UE may attempt PDCCH detection in units of 1, 2, 4, 8, or 16 CCEs in CORESET.
  • One or a plurality of CCEs capable of attempting PDCCH detection may be referred to as PDCCH candidates.
  • the terminal may receive a plurality of resets.
  • FIG. 7 is a diagram showing the difference between the conventional control area and the CORESET in the NR.
  • the control region 300 in the conventional wireless communication system (eg, LTE / LTE-A) is configured over the entire system band used by the base station. Except for some terminals (eg, eMTC / NB-IoT terminals) that support only a narrow band, all terminals may receive radio signals of the entire system band of the base station in order to properly receive / decode control information transmitted by the base station. I should have been able.
  • the CORESETs 301, 302, and 303 may be referred to as radio resources for control information that the terminal should receive, and may use only a part of the system band instead of the entire system band.
  • the base station may allocate CORESET to each terminal and transmit control information through the assigned CORESET. For example, in FIG. 6, the first CORESET 301 may be allocated to the terminal 1, the second CORESET 302 may be allocated to the second terminal, and the third CORESET 303 may be allocated to the terminal 3.
  • the terminal in the NR may receive control information of the base station even though the terminal does not necessarily receive the entire system band.
  • the CORESET there may be a terminal specific CORESET for transmitting terminal specific control information and a common CORESET for transmitting control information common to all terminals.
  • the carrier band portion may be simply abbreviated as a bandwidth part (BWP).
  • BWP bandwidth part
  • various numerology eg, various subcarrier spacings
  • NR may define a common resource block (CRB) for a given numerology on a given carrier.
  • CRB common resource block
  • the band portion BWP may be a set of contiguous physical resource blocks (PRBs) selected from contiguous subsets of common resource blocks (CRBs) for a given numerology on a given carrier.
  • PRBs physical resource blocks
  • CRBs common resource blocks
  • a common resource block may be determined according to numerology for which carrier band, for example, what subcarrier spacing is used.
  • the common resource block may be indexed from the lowest frequency of the carrier band (starting from 0), and a resource grid based on the common resource block (resource grid, which may be referred to as a common resource block resource grid) may be defined. .
  • the band portion may be indicated based on the CRB having the lowest index (referred to as CRB 0).
  • CRB 0 The CRB 0 having the lowest index is also referred to as point A.
  • the band i portion may be indicated by N start BWP, i and N size BWP, i .
  • N start BWP, i may indicate the start CRB of the iW BWP on the basis of CRB 0, and N size BWP, i may indicate the size in the frequency domain of the BWP i. .
  • PRBs in each BWP may be indexed from zero.
  • the UE may receive up to four downlink band portions in downlink, but only one downlink band portion may be activated at a given time.
  • the UE does not expect to receive PDSCH, PDCCH, CSI-RS, etc. out of the downlink band portion activated among the downlink band portions.
  • Each downlink band portion may include at least one CORESET.
  • the UE may receive up to four uplink band portions in uplink, but only one uplink band portion may be activated at a given time.
  • the UE does not transmit the PUSCH, the PUCCH, etc. except for the uplink band portion activated among the uplink band portions.
  • the NR operates on a wideband as compared to conventional systems, where not all terminals can support this wideband.
  • the band portion may be a feature that enables a terminal that cannot support the broadband to operate.
  • the resource allocation type specifies how the scheduler (eg, base station) allocates resource blocks for each transmission. For example, when a base station allocates a band composed of a plurality of resource blocks to a terminal, the base station may inform the resource blocks allocated to the terminal through a bitmap composed of bits corresponding to each resource block of the band. . In this case, the flexibility of resource allocation will be the greatest, but the amount of information used for resource allocation will be increased.
  • the scheduler eg, base station
  • Resource allocation type 0 allocates a resource through a bitmap, where each bit of the bitmap indicates a resource block group (RBG) rather than a resource block. That is, in resource allocation type 0, resource allocation is performed on a resource block group basis, not on a resource block level.
  • RBG resource block group
  • Resource allocation type 1 is a method of allocating resources in RBG subset units.
  • One RBG subset may consist of a plurality of RBGs.
  • RBG subset # 0 is RBG # 0, 3, 6, 9 ...
  • RBG subset # 1 is RBG # 1,4,7,10, ...
  • RBG subset # 2 is RBG # 2, 5, 8, 11 ... and the like.
  • the number of RBGs included in one RBG subset and the number of resource blocks (RBs) included in one RBG are set equal.
  • Resource allocation type 1 indicates which of the RBG subsets is used and which RBs are used within the used RBG subset.
  • Resource allocation type 2 is a method of allocating resources in such a manner as to indicate a band starting position (RB number) to be allocated and the number of consecutive resource blocks.
  • the consecutive resource blocks may be started from the start position.
  • the contiguous resource blocks are not necessarily limited to physical contiguity, but may also mean that logical or virtual resource block indexes are contiguous.
  • the number of resource blocks constituting the RBG may be changed flexibly.
  • information on the corresponding RBG for example, information indicating the number of resource blocks constituting the RBG, may be transmitted through a higher layer signal such as a scheduling DCI or a third physical layer (L1) signaling or an RRC message. .
  • resource allocation information may include information on a time-domain in addition to information on a frequency domain.
  • the inclusion of information, how it is included, etc. can also be changed flexibly.
  • the present invention proposes a resource allocation method for a PDSCH and / or a PUSCH when there are various field sizes and / or interpretation methods for resource allocation.
  • the RBG-based bitmap scheme is assumed when the RBG size is flexible. However, when resource allocation granularity is changed and / or accordingly, It can be extended even if it is changed.
  • the resource allocation scheme (particularly, the content of the RBG size or grid) may be applied to at least a PDSCH or PUSCH mapable resource region.
  • Different resource allocation schemes (RBG size or grid) may be applied in other resource zones. For example, when a specific resource of the PDCCH region can be used for PDSCH mapping, the RBG size and other RBG sizes in the region may be independently set or indicated.
  • the RBG size may be differently or independently set / indicated for each carrier or band part.
  • RBG may be viewed as a value representing frequency-domain granularity.
  • the RBG size may be one that changes fluidly. Therefore, when the RBG is used, the resource allocation field size in the frequency domain may also be changed flexibly.
  • Large RBG size may be advantageous in indicating a large area (for example, the entire terminal band or the system band) on the frequency axis.
  • a small RBG size may be advantageous in indicating a small region (for example, one or several physical resource blocks) on the frequency axis.
  • the required resource allocation field size may be excessively large.
  • the bitmap frequency axis resource allocation field may consist of 5 bits, whereas the RBG size is 2
  • the frequency axis resource allocation field may consist of 25 bits.
  • the resource allocation field is included in the DCI, and it may be advantageous in terms of blind decoding / detection from the UE's point of view to keep the total DCI size or the total resource allocation field size the same.
  • the bits of the resource allocation field that vary according to the RBG size selection may be mainly used to perform time domain resource allocation.
  • the allocation method for time and / or frequency domain resources may differ according to the indicated RBG size.
  • the following shows an example of a resource allocation method according to the RBG size. All or some combination of the following schemes may be used in allocating time and frequency resources.
  • the resource allocation field indicates may be limited to resources in the frequency domain.
  • the specific level may be a preset default RBG size or may be set in a higher layer.
  • resource allocation in the time domain is predetermined (to the time axis) for the PDSCH mapping region or the PUSCH mapping region determined through a higher layer signal or determined by a slot type format or the like. Can be performed for.
  • a time domain resource targeted for resource allocation may be separately indicated by higher layer signaling or information on a slot type format.
  • the default time domain resource is predetermined (e.g. PDSCH or PUSCH across slots), or if slot type related information is dynamically indicated, the time domain information is The slot type related information may be dynamically changed in the slot. Alternatively, even when slot type related information is transmitted, a start point and a duration of a PDSCH or a PUSCH may be preset by an upper layer signal for reliability. Alternatively, even when slot type related information is not transmitted, higher layer signaling may be considered.
  • the resource allocation field indicates may be limited to resources in the time domain. More specifically, the RBG size may be the same as or equal to the system band or the terminal band. In this case, resource allocation in the frequency domain may be allocated for either PDSCH or PUSCH transmission (for the indicated RBG size).
  • the resource allocation field may indicate time and frequency resources. More specifically, some bits of all the bits of the resource allocation field may be used to indicate frequency domain resource allocation and the remaining bits may be used to indicate time domain resource allocation.
  • the frequency domain resource allocation may indicate an RBG to be allocated in the indicated RBG size.
  • the time domain resource allocation may be indicative of what is allocated to a preset or indicated time-domain scheduling unit.
  • the time domain resource allocation may be provided in the form of a pattern, and the number of the patterns may also vary according to the change of bits for the time domain resource allocation.
  • the time domain resource allocation and the frequency domain resource allocation may be combined.
  • the information on the allocated time and frequency resource pairs may be set in the form of a plurality of patterns. Bits of the entire resource allocation field may indicate the pattern.
  • the terminal may be configured with a plurality of bandwidth parts, and each band part may be set by a contiguous set of PRBs, an RBG size used, a time domain resource allocation size, and the like.
  • the band part index used in the DCI may be informed, and the RBG size and time information used in each band part may be used for resource allocation when each band part is indicated.
  • the selection for the band portion may be representative of the selection for time and / or frequency resource scheduling unit in resource allocation.
  • the terminal may be configured as a band subgroup for band parts that can be used together (ie, a band part that can dynamically change to one DCI size) among the configured band parts, and are the largest resource in each band subgroup. It may be assumed that the bit size of the resource allocation field in the band subgroup is determined according to the size of the allocation field.
  • This configuration may be parallel to the dynamic change of the band portion. It can be assumed that each band subgroup shares a CORESET. This is because the size of the scheduling DCI can also change when the CORESET changes, taking into account the case where the resource allocation field changes dynamically while the CORESET is shared.
  • the band partial group can expect the terminal does not meet the baseband (baseband bandwidth) while sharing the CORESET (s). This may be assumed that the baseband of the terminal does not change in accordance with the maximum value of the band subgroup within the band subgroup.
  • higher layer signaling may be possible for whether the terminal may assume a band change or whether a retuning delay between the control signal and data may be assumed. If the delay assuming the band change is not set, it can be assumed that the band does not change and fits the maximum value.
  • one band portion may be set, and a set of time / frequency schemes of resource allocation of DCI, which may be indicated by CORESET (s) of the corresponding band portion, may be set.
  • CORESET s
  • the set of time / frequency schemes may consist of band, RBG size, time domain resource allocation information, and the like.
  • a method of indicating different RBG size or time-frequency resource allocation scheme may be as follows.
  • Explicit bits may be used for DCI.
  • the terminal may monitor CORESETs set in several band portions at the same time.
  • the resource allocation method used for each reset may be different.
  • a CORESET may be configured in each of the 200 RB band portion and the 10 RB band portion, and the bit size of the resource allocation field of each CORESET may be assumed as necessary to schedule 200 RB and 10 RB. More generally, bands and resource allocation information of schedulable data may be set for each CORESET.
  • the total bit field size for time and frequency resource allocation may be the same.
  • the resource allocation for the frequency domain may indicate a resource allocated through a bitmap scheme for a given RBG size, or the RIV scheme (that is, contiguous with the starting RB or RBG index) based on the given RBG size as a basic unit. Or a method of indicating the number of RBs or RBGs).
  • the resource allocation for the time domain may include: starting time-domain scheduling unit index, last time-domain scheduling unit index, and / or continuation for PDSCH or PUSCH. It may be the number of time-domain scheduling units.
  • the time domain scheduling unit may be a symbol (reference numerology or numerology reference for DCI), or may be a plurality of symbols or a mini-slot.
  • the size of the symbol group is set and a scheduling unit is set based thereon, the size of a specific symbol group may be different from other symbol group sizes depending on the number of symbols constituting the slot.
  • a pattern for a symbol group in a slot or a plurality of slots may be set in advance or in accordance with an indication of a base station, and resource allocation may be performed based on a starting unit and a corresponding number of units.
  • the symbol group pattern may be different according to a control region setting (for example, the number of symbols in the time domain).
  • the symbol group pattern in the slot consisting of seven symbols may be any one of the following. (3, 2, 2), (1, 2, 2, 2), (2, 2, 2, 1), (2, 2, 3), (2, 3, 2) and the like.
  • Information about the start / last / section may be present in a pattern form, and a resource allocation bit field may be used to indicate a corresponding pattern. More specifically, the information on the pattern may be indicated by the base station (via upper layer signaling or a third PDCCH).
  • An example of the pattern may be a RIV method (start symbol index, a method of notifying the number of consecutive symbols). If the bit field size for time domain resource allocation is changed according to the RBG size, resource allocation may be performed with some bits of the RIV scheme fixed to a specific value (eg, 0 or 1), or In the RIV scheme, the basic unit may be increased (eg, performed based on a plurality of symbols in performing in one symbol period).
  • resource allocation if the bit size of the resource allocation field is the same but the RBG size is changed, the resource combination that can be allocated may be different.
  • the manner in which the RBG size is changed may be at least one of 1) directly indicated in the DCI, 2) changed according to the band part change, or 3) changed according to the bit size of the resource allocation field.
  • the bit field for frequency domain resource allocation is configured based on a specific RBG size.
  • the size of the bit field may be determined based on the maximum RBG size that can be set.
  • the base station may indicate the bit size of the resource allocation field.
  • the specific RBG size or larger RBG size may be flexible resource allocation for all RBGs in a system band, a terminal band, or a predetermined band portion.
  • resource allocation may be possible for only some RBG sets.
  • a specific RBG size (group) may represent all RBGs or RBG combinations within a band given to a corresponding UE.
  • resource allocation may be possible for only some RBG sets within a band given to the corresponding UE.
  • the number of RBGs in the terminal band is N for the first RBG size
  • the number of RBGs in the terminal band is M for the second RBG size.
  • M the number of RBGs in the terminal band
  • M M> N.
  • the resource allocation field is set based on the first RBG size, only the N or a subset of M RBGs for the second RBG size may be allocated through the resource allocation field.
  • setting a larger RBG size may be for allocating more frequency resources, and conversely, setting a smaller RBG size may be for allocating a smaller frequency resource.
  • the resource allocation for the scheduled band portion may be performed using the bit size of the resource allocation field in the scheduled band portion.
  • the base station may instruct the user equipment to select the RBG set in order to alleviate the constraint on resource allocation.
  • the resource allocation field in the frequency domain may be composed of an RBG size indicator, an RBG set indicator in a band, and / or an RBG indicator in an RBG set.
  • the candidates for the RBG set may be determined by the base station separately instructing the UE (eg, signaling and / or group-common PDCCH and / or a third DCI through a higher layer signal such as an RRC message). Instructions). Among candidates for the RBG set, a specific candidate may be indicated in the DCI scheduling the corresponding PDSCH or PUSCH.
  • the RBGs in the RBG set may be localized (ie, adjacent to each other) or distributed (ie, separated from each other).
  • the base station may set the candidate (s) for the RBG set via signaling and / or PDCCH and / or third DCI via higher layer signal such as RRC message, which scheme is within the terminal band or system band. It may be in the form of a bitmap for RBGs.
  • the base station may map a plurality of consecutive RBGs to the same RBG set for localized resource allocation, and a plurality of non-contiguous RBGs for distributed resource allocation.
  • RBG may be mapped to the same RBG set.
  • the number of RBGs that can be represented according to the number of RBGs that can be expressed according to the bit size of the resource allocation field of the scheduling BWP starting from the lowest RBG of the scheduled BWP is scheduled. It may consist of.
  • the number of PRBs constituting the RBG becomes relatively small, and / or the number of PRBs that can actually be used for data mapping in the RBG due to reserved resources, etc. becomes relatively small.
  • the RBG may be excluded from the RBG set to be indicated.
  • the relatively smaller RBG size may refer to a case where the size of the RBG becomes smaller than the size of the RBG set according to the band portion (BWP) size.
  • the foregoing may be applied regardless of the resource allocation type.
  • a method in which the bit size of the required resource allocation field and the bit size of the actual resource allocation field are different as in the above method may be followed.
  • the resource allocation type of the RIV scheme may configure the bit size of the resource allocation field based on the largest band portion or configure the bit size of the resource allocation field based on the largest band portion among the set band portions. This is because, in the RIV scheme, the bit size difference of the resource allocation field may be slight depending on the bandwidth portion size.
  • the size of a specific RBG follows a set RBG size (including a difference of +/- 1), and the size of another specific RBG includes all remaining PRBs of the band portion. Can be set.
  • FIG 9 illustrates a method for determining a resource block group (RBG) size according to an embodiment of the present invention.
  • the apparatus determines the number of resource block groups N RBG for a downlink band including a plurality of N DL RB resource blocks (S101).
  • the apparatus determines the size of each of the number N RBG resource block groups.
  • the downlink system band or band portion is N DL RB Assume that it is composed of three resource blocks. In this case, if the size of one RBG is P resource blocks, that is, the size is P, the total number of RBGs (N RBG ) Is floor (N DL RB / P). floor (x) is the function that outputs the largest integer in the range less than x (ceil (x) is the function that outputs the smallest integer in the range greater than x).
  • N RBG -ceil ((N DL RB mod P) / P) RBGs can be size P, if N DL RB If mod P is greater than zero, the size of the last RBG is P + (N DL RB mod P) can be given.
  • AmodB is a modulo operation that outputs the remainder when A is divided by B.
  • FIG. 10 is a specific example of determining a resource block group size according to FIG. 9.
  • N RBG the total number of RBGs
  • the band portion consists of 50 PRBs
  • the bit size of the resource allocation field consists of 5 (bits)
  • the RBG size consists of 5 PRBs.
  • the RBG configuration for the band portion may be composed of, for example, four RBGs having a size of 5 PRBs and one RBG having a size of 30 PRBs. In the above manner, there may be a problem that a specific RBG size may be excessively large.
  • the size and number of RBGs when setting the size and number of RBGs with the bit size and the size of the band portion of the resource allocation field set or given, consider that the size difference between the configuration RBGs is less than 1 (PRB). Can be.
  • the RBGs constituting the band portion are each RBG having a Ceil (N / M) size of M * Ceil. (N / M) -N, and RBG having Floor (N / M) in size may be M- (M * Ceil (N / M) -N).
  • the order in which RBGs having different sizes are arranged may be to firstly arrange RBGs having the same RBG size and then to arrange RBGs having different RBG sizes.
  • the majority of RBGs should be set to Ceil (N / M) or Floor (N / M), Set the size of the remaining (one) RBG to include the remaining PRBs (for example, the size of N- (M-1) * Ceil (N / M) or N- (M-1) * Floor (N / M)) It may be set to have).
  • the resource allocation (interpretation) method according to the RBG size in the frequency domain may be extended.
  • resource allocation for the time domain may be set for a specific scheduling unit, and resource allocation may be performed according to a scheduling unit value that is flexibly changed.
  • the RBG aggregation indicator may be represented by a time and / or frequency resource scheduling unit.
  • the RBG set indicator may include information on a starting symbol index and / or duration along with information on the RBG constituting the RBG set.
  • a basic time and frequency resource unit may be selected for each RBG in the scheduling unit of the time domain.
  • the resource allocation (or scheduling unit) may not be changed flexibly for the time axis.
  • resource allocation for a frequency domain may be performed for a specific RBG set, and allocation information for the specific RBG set may be equally applied to a plurality of RBG sets in a band.
  • allocation information for the specific RBG set may be equally applied to a plurality of RBG sets in a band.
  • bitmap information for a specific RBG set is equally applied to each other RBG set.
  • the band may be a system band or a UE bandwidth and may be replaced by a bandwidth part. If a plurality of band parts are configured for a specific terminal, bandwidth part indicator information is transmitted, the RBG set may be limited to the corresponding band part, or the RBG set itself is a plurality of band parts. It may be configurable to RBGs in the.
  • Another way may be, for example, that two resource allocation types are set dynamically.
  • the frequency domain will be described, but may be applied to resource allocation in the time domain, or may be applied to time / frequency domain resources.
  • Resource allocation type 0 A bitmap having a bit size of RBG size K + floor (M / K), where M is the number of PRBs for a band set in the band portion.
  • Resource allocation type 1 bitmap with bit size of RBG size p * K + floor (M / p * K) + bitmap with bit size of (p * K)
  • FIG. 11 shows an example for resource allocation type 1.
  • the resource allocation type 1 increases the RBG size, gives a bitmap (RBG indicator) of which RBG is selected among the RBGs, and within (RBG) bitmap (RBG) within one RBG size.
  • RB indicator at) allows RB-level resource allocation. It can be assumed that the bitmap within the RBG size is commonly applicable to the selected RBGs.
  • the resource allocation scheme of the time domain may be changed while the set of allocable RBs differs according to the RBG size.
  • a terminal in performing time domain resource allocation, may indicate a start symbol index and / or a last symbol index for a PDSCH or a PUSCH through a scheduling DCI.
  • the start symbol index and / or the last symbol index may be indicated in units of symbols constituting a slot or in symbol group units, or joint indication of the start symbol index and the last symbol index may be performed. It may be.
  • the start symbol index and the last symbol index may be combined and indicated by the RIV method.
  • the RIV method may be a method of notifying a start symbol index and a duration.
  • the base station may set the set (s) for a plurality of time domain resources through the RRC signaling, each set is the slot index information and / or start symbol index, the PDSCH / PUSCH is mapped, And / or a combination of the last symbol index and the like.
  • time domain resource allocation may be performed by indicating through scheduling DCI (DCI) for scheduling one of the set sets.
  • DCI scheduling DCI
  • the set (s) set by the RRC may be set separately from slot format information (SFI) transmitted through a group common PDCCH.
  • SFI indicates a downlink portion, a gap, and / or an uplink portion in the slot.
  • the SFI assumes that the downlink part is generally used from the first symbol of the slot, whereas in the case of time domain resource allocation, it is for the purpose of avoiding overlapping with the CORESET (control region) during PDSCH or PUSCH scheduling.
  • the purpose and method are different because the first few symbols are not excluded from the way they are not mapped.
  • time domain resource allocation is to be performed based on RRC signaling, it is necessary to determine a time domain resource allocation method before the RRC configuration is established and / or during the RRC resetting interval.
  • the following is a more specific embodiment.
  • the parameter set (s) for the time domain resource may be selected from the physical broadcast channel (PBCH) and / or the remaining minimum system information (RMS) And / or may be configured through OSI (other system information).
  • PBCH physical broadcast channel
  • RMS remaining minimum system information
  • OSI other system information
  • part of the minimum system information may be transmitted through the PBCH, and the rest, that is, the RMSI may be transmitted through the PDSCH.
  • the time domain resource allocation of the scheme may be the case where the scheduling DCI belongs to a common search space or a group common search space.
  • the common search space may again be a search space for RMSI and / or OSI transmission.
  • the slot index may be a fixed value, and different values may be set for the PDSCH and the PUSCH.
  • the PDSCH may be transmitted in the same slot as the PDCCH, and the PUSCH may be transmitted after 4 slots from the PDCCH.
  • the start symbol index it may be designated as a symbol after the CORESET interval. More specifically, the PUSCH may be set to start symbol index through higher layer signaling (PBCH and / or RMSI and / or OSI) and / or DCI indication, or may be set to start from the first symbol of the configured slot.
  • PBCH and / or RMSI and / or OSI higher layer signaling
  • the last symbol index may be set through higher layer signaling (PBCH and / or RMSI and / or OSI) and / or DCI indication, or may be set to the last symbol of the slot.
  • PBCH and / or RMSI and / or OSI higher layer signaling
  • DCI indication may be set to the last symbol of the slot.
  • the time domain resource allocation of the above scheme may be a case where the scheduling DCI belongs to a common search space or a group common search space.
  • the common search space may again be a search space for RMSI and / or OSI transmission.
  • SSB synchronization signal block
  • CORESET # 1 different tables for time domain resource allocation may be used for PDSCH allocation.
  • SSB means a block in which a synchronization signal and a physical broadcast channel (PBCH) are transmitted.
  • PBCH physical broadcast channel
  • NR can support an RMSI size of approximately 1700 bits in one transport block for FR1, FR2 with appropriate RMSI settings.
  • a transport block size (TBS) of up to 2976 bits can be supported for PDSCH by SI-RNTI.
  • TBS transport block size
  • the subcarrier spacing of the ⁇ SS / PBCH block, PDCCH ⁇ may be [240, 120] kHz, or [120, 120] kHz.
  • the initial downlink band portion may be composed of 24 or 48 PRBs.
  • the initial downlink band portion means a downlink band portion that is valid until the terminal explicitly sets the band portion during or after RRC connection establishment.
  • the maximum number of available resource elements for PDSCH mapping may be 864.
  • the size of the RMSI is 1700 bits, the coding rate will be approximately 0.98. It may be necessary to support time domain resource allocation longer than 2 symbols to support a sufficiently large RMSI size.
  • PDCCH ⁇ is [240, 120] kHz
  • the number of available resource elements for PDSCH scheduling is determined. There may be no room to increase. However, if it is possible not to use any SS / PBCH block index, or if any SS / PBCH block index assumes the same bill direction, PDSCH allocation of two symbol intervals or more can be considered. In other words, for multiplexing pattern 2, the rows of the table below may be added to the default PDSCH time domain resource allocation.
  • the time domain resource allocation field included in the DCI may indicate a row index in the 'PDSCH symbol allocation' table set by the higher layer.
  • Each row indexed in the table may define the PDSCH mapping type assumed to receive the slot offset K 0 , the start and length indicator (SLIV), and the PDSCH.
  • PDSCH or PUSCH may be scheduled over a plurality of slots through aggregation of multiple slots.
  • time domain resource allocation may need to be extended to indicate for aggregated slots.
  • the following is a more specific example of a time domain resource allocation method in a multi-slot aggregation situation.
  • Each set is a slot index and / or last slot index to start mapping of the PDSCH or PUSCH, and / or the number of slots to be aggregated and / or the starting symbol index for each aggregated slot and / or the last symbol for each aggregated slot. It may be composed of a combination of indexes and the like.
  • the RRC configuration may be set when the multi-slot aggregation operation is set, and may be set independently of the RRC configuration for time domain resource allocation for one slot, and includes a super set including the same. superset).
  • a set of time domain resources for one slot case may be utilized for aggregated slots. Characteristically, the start symbol index in the set indicated (finally in DCI) may be commonly applied to each aggregated slot. In the case of the CORESET interval, it may be a suitable method because it cannot be regarded as being changed in the aggregated slots. The last symbol index in the next indicated set may be to apply to a particular aggregated slot. In particular, the specific slot may be the last or first slot among the aggregated slots.
  • the last slot index for the remaining aggregated slots is (1) RRC signaling, (2) RRC signaling and DCI indication (which may be in the form of SFI or SFI pattern in particular), (3) SFI (group common PDCCH for that slot) From) and (4) SFI patterns (received from the group common PDCCH) for the corresponding slots.
  • the wireless communication system can support an application field requiring high reliability, and in the above situation, the amount of DCI transmitted on the PDCCH can be reduced. More specifically, it is necessary to efficiently reduce the size of a specific field (particularly, a resource allocation field) among DCI contents.
  • Resource allocation may use a RIV method (ie, a method of expressing the number of consecutive RBs with the starting RB index or the number of consecutive RB sets with respect to the specific RB set).
  • RIV method ie, a method of expressing the number of consecutive RBs with the starting RB index or the number of consecutive RB sets with respect to the specific RB set.
  • an RBG size is determined according to a system band, and in the case of at least resource allocation type 0, resource allocation may be performed in units of RBGs. In the above case, if the resource allocation is not in RBG units, resource waste may occur.
  • the information on the step size or information on the RBG size in the case of simple resource allocation is set to a specific RBG size (eg, an RBG size set in association with a band) or the base station is a terminal.
  • the specific RBG may be larger or smaller than the set RBG size depending on the size of the system band or the terminal band or the band portion. Like the other RBGs, the specific RBG may be handled / indicated as the same allocated resource. That is, when the resource is allocated, the RBG is indicated to the allocated RBG regardless of the RBG size, and the indicated RBG may be allocated to the PRBs according to the RBG size. If the RBG size changes dynamically, in order to maintain the total bit size for simple resource allocation (e.g., the largest or smallest of the candidate values, or as indicated by the base station), Value, the total bit size may be set.
  • the scheduling unit in the RIV scheme may be changed according to the indicated RBG size. Therefore, when the indicated RBG size is larger than the specific RBG size referred to in setting the size, the RBG may be padded to match the total bit field size in which a specific value (for example, 0) is set in the MSB or LSB in the bit field for the RIV. On the contrary, when the value is small, it may be assumed that a single or a plurality of bits of the MSB or LSB are cut in the bit field for the RIV, and when the RIV value is interpreted, the truncated bits are filled with a specific value (for example, 0). have.
  • a specific value for example, 0
  • Distributed resource allocation and / or frequency hopping may be required to secure frequency diversity, which may be performed by applying interleaving after simple resource allocation.
  • interleaving method a row-by-row or column-by-column is input to a matrix of a specific size and extracted by a column (or a row) (hereinafter, referred to as a block).
  • Interleaver method can be used.
  • interleaving may be performed based on pseudo-random functions. In this case, the position of the frequency resource may be moved based on the random number.
  • the interleaving may be performed within the size of an active BWP in which a PDSCH or a PUSCH is scheduled, or a separate specific frequency domain (eg, a base station indicates (high layer signaling). And / or (via DCI)).
  • the throughput may be reduced, and alternatively, the hopping regions may be set to be orthogonal to each other. .
  • the hopping region may be set non-contiguous, and based on this, the hopping region may prevent overlapping doped resources between different band parts.
  • the size of the row of the block interleaver may be set regardless of the partial band size (for example, using a third higher layer signal signaling). More specifically, it may be set through PBCH or RMSI, or may be updated by RRC.
  • the row size for the block interleaver may be equally set even between different partial bands. More specifically, the band of the UE may be divided into X subregions, and the number of subregions may be defined as the number of rows of the block interleaver matrix.
  • the specific region value of the matrix may be filled with NULL, and the portion of the NULL may be skipped when the index is extracted column by column. That is, the hopping region may be avoided by avoiding a specific region through the above scheme. More specifically, NULL can be selected by selecting specific row (s) (and / or offsets into elements) for the matrix for the block interleaver, or by designating the start and end elements. It may be.
  • the above information may be indicated by the base station (eg, higher layer signaling).
  • the pseudo-random scheme may be performed based on cell ID, partial band specific information, or third signaling (eg, virtual ID).
  • the above scheme may be to efficiently support multiplexing between terminals in a cell or partial band while supporting inter-cell or partial band randomization.
  • the resource allocation is in RBG units even after interleaving. That is, the unit of interleaving may be an RBG unit.
  • the RBG may be the same as the RBG size at the time of resource allocation instruction or may be set differently. That is, the base station may separately indicate (eg, higher layer signaling or a group common PDCCH or a third DCI) to the UE separately from the RBG size assumed for resource allocation and the RBG size assumed for interleaving.
  • FIG. 13 illustrates a signaling method of an apparatus in a wireless communication system according to the present invention.
  • an apparatus for example, a base station transmits first information indicating a first resource unit to be used for interleaving through an upper layer signal to a terminal (S201), and in the first resource unit. Interleaving is performed on a specific resource for the terminal (S202).
  • the first information may be instructed separately from the second information indicating the second resource unit used by the base station for resource allocation to the terminal.
  • the first resource unit may be composed of a plurality of resource blocks
  • the second resource unit may be composed of a plurality of resource blocks.
  • the number of resource blocks constituting the first and second resource units may be the same or different.
  • a resource allocation type may be a resource allocation type 0 and a resource allocation type 1 in a wireless communication system.
  • Resource allocation type 1 is a resource allocation scheme that indicates a number (ie, length) of a starting (virtual) resource block and allocated resource blocks consecutively from the starting (virtual) resource block.
  • Interleaving may be used.
  • interleaving may be a mapping of a virtual resource block to a physical resource block. In this case, interleaving may be performed in a first resource unit.
  • L virtual resource blocks are referred to as resource block bundles
  • the L virtual resource blocks are mapped to physical resource blocks in units of resource block bundles.
  • interleaving is performed in units of one resource block.
  • interleaving may be performed in units of a plurality of resource blocks.
  • resource allocation for UEs 1 and 2 is performed in RBG units, which are a bundle of 1 or 4 resource blocks, respectively. If interleaving is performed in units of one resource block for resources allocated for UE 1, The allocated resource on which the interleaving of the terminal 1 is performed may overlap the plurality of RBGs of the terminal 2, and in this case, the scheduling of the terminal 2 may be restricted.
  • the first information indicating the first resource unit used for interleaving, the second information indicating the second resource unit used by the base station for resource allocation to the terminal. can be specified separately.
  • resource allocation type 0 allocates resources in units of RBG, does not use interleaving, and can inform the UE of an RBG allocated in a bitmap manner.
  • the RBG unit may be the second resource unit.
  • the second resource unit is the size P of the RBG unit according to the size of the band (band portion) (that is, the number of resource blocks constituting the band (band portion)) and which of the plurality of settings is used, as shown in the following table. Can be determined.
  • the second information may indicate any one of settings 1 and 2 in Table 6.
  • the first information is directed to the terminal separately from the second information indicating a second resource unit assumed by the base station at the time of resource allocation to the terminal.
  • the first information and the second information may be signaled through at least one of a higher layer signal such as a radio resource control (RRC) message / signal, a group common PDCCH, or a third DCI.
  • RRC radio resource control
  • the first resource unit may be different from the second resource unit.
  • the number of resource blocks constituting the first resource unit and the number of resource blocks constituting the second resource unit are independent of each other and may have different values.
  • the first resource unit may be determined by the first information, and the second resource unit may be determined based on the number of resource blocks constituting the band and the second information.
  • first information indicating a first resource unit to be used for interleaving through an upper layer signal is received from a base station and interleaved in the first resource unit. Receiving a specific resource from the base station. In this case, the first information may be instructed separately from second information indicating a second resource unit used by the base station for resource allocation to the terminal.
  • it may be an RBG size for a general resource allocation type (eg, bitmap scheme) in the partial band.
  • a general resource allocation type eg, bitmap scheme
  • the frequency domain / resource hopped by slot or by symbol group may be different.
  • the location of the PRB may be a hopping based on a slot or symbol index at which the PDSCH or PUSCH starts, or a specific time point (eg, a sub Resource allocation may be performed based on a hopped PRB index calculated based on a start of a frame, a start of a frame, etc.).
  • the hopping period in the time domain may be set in a fixed form (for example, by dividing based on a center point in the slot or between a 7th symbol and an 8th symbol) in consideration of multiplexing among a plurality of terminals.
  • the hopping interval in the time domain may be set to higher layer signaling (eg, at least one of PBCH, RMSI, RRC) and / or indicated in DCI in consideration of multiplexing between PDSCHs or PUSCHs having different configuration symbols.
  • higher layer signaling eg, at least one of PBCH, RMSI, RRC
  • intra-slot frequency hopping may be applied and hopping may not be performed in the non-slot period.
  • a predetermined hopping region eg, active uplink band portion
  • a hopping region signaled by a higher layer eg, PBCH or RMSI or RRC. It may be.
  • a PUSCH or PDSCH transmitted in PRB N may be transmitted in ⁇ (PRB N + offset) mod uplink band portion bandwidth ⁇ in a second hopping interval.
  • the hopping interval in the time domain is set in a fixed form (for example, divided based on a center point in a slot or between a 7th symbol and an 8th symbol) in consideration of multiplexing among a plurality of terminals.
  • the number of configuration symbols may be set to higher layer signaling (eg, PBCH or RMSI or RRC) in consideration of multiplexing between different PDSCHs or PUSCHs and / or indicated in DCI.
  • the offset is a value signaled / set by a cell-specific higher layer signal, or an offset value set for each band part, or setting a hopping region as a parameter (eg, 1 / N, 2 of the hopping region). / N, ... (N-1) / N multiple times) may be used.
  • the final application value may be in the form indicated by the DCI.
  • Multiple subband sizes / offsets and hopping patterns in frequency hopping may be set.
  • the setting may be set differently according to the configured band portion BWP.
  • a subband size and an offset may be configured for each hopping pattern, and a corresponding value may be set differently for each band portion.
  • a hopping pattern to be used for each band part may be differently set or one of several hopping patterns may be dynamically determined.
  • An example of such a hopping pattern is as follows.
  • Type 1 The index of the RB or RBG may be increased by the cell-specific offset value. This allows the terminals to use the same hopping pattern even if they have different band portions, thereby minimizing a case where collision occurs due to hopping between terminals. Alternatively, the offset setting itself is performed for each band part, and the network may consider setting the same value for the plurality of band parts.
  • Type 2 As in LTE PUCCH Type 1, the hopping band configured to the UE may be divided in half to increase the RB or RBG index by the corresponding value. This may increase collision by hopping between terminals having different band portions at different offsets, but may obtain diversity gain. When using this method, the hopping band can be offset by a specific value rather than dividing by half.
  • Type 3 Hopping may be applied to a hopping band larger than its own band portion, such as LTE PUCCH type 2.
  • the hop When the hop is hopped to an RB or RBG index larger than the band part, it may be to move an absolute frequency location of the uplink band part according to the hopping.
  • multilevel hopping may be performed when hopping is applied. For example, one uplink band portion may be divided into several subbands, type 1 or 2 may be performed in the sub band, and type 1 or type 2 may be performed for each sub band again.
  • Hopping in the initial uplink band portion where message 3 is transmitted may also follow the above scheme, and the hopping scheme may be transmitted in a random access response (RAR).
  • RAR random access response
  • the absolute frequency position of the uplink band portion is changed when at least inter-slot hopping is applied.
  • frequency hopping may be performed within a hopping band set based on common PRB indexing, and the corresponding hopping band may be set by RSMI.
  • the physical location of the initial UL band portion may be changed by the hopping. This may apply only in case of inter slot slot hopping or only in the initial transmission or retransmission of message 3.
  • inter-slot hopping may be performed within a cell common or group common hopping band based on common PRB indexing, and in intra-slot hopping in an active band portion of a terminal. Can be.
  • the advantage of the above scheme is that when supporting a small RBG size (for example, 1 RB granularity), when RIV resource allocation is performed with 1 RB granularity, only interleaving can be performed with RBG size granularity Is the point.
  • An advantage of the above scheme is that while allocating resources smaller than the RBG size, the allocated RBs can be distributed while considering multiplexing with other PDSCHs or PUSCHs (ie, maintaining an RBG grid).
  • the relationship between possible allocated resource combinations may be to have a nested structure.
  • the starting RB may be limited.
  • FIG. 14 is a block diagram illustrating an apparatus in which an embodiment of the present invention is implemented.
  • the apparatus 100 includes a processor 110, a memory 120, and a transceiver 130.
  • the processor 110 implements the proposed functions, processes and / or methods.
  • the memory 120 is connected to the processor 110 and stores various information for driving the processor 110.
  • the transceiver 130 is connected to the processor 110 to transmit and / or receive a radio signal.
  • the apparatus 100 may be a base station or a terminal.
  • the processor 110 may include an application-specific integrated circuit (ASIC), another chipset, a logic circuit, a data processing device, and / or a converter for converting baseband signals and wireless signals to and from each other.
  • Memory 120 may include read-only memory (ROM), random access memory (RAM), flash memory, memory card, storage medium, and / or other storage device.
  • the transceiver 130 may include one or more antennas for transmitting and / or receiving wireless signals.
  • the above-described technique may be implemented as a module (process, function, etc.) for performing the above-described function.
  • the module may be stored in the memory 120 and executed by the processor 110.
  • the memory 120 may be inside or outside the processor 110 and may be connected to the processor 110 by various well-known means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé de signalisation dans un système de communications sans fil, et un dispositif l'utilisant. Le procédé consiste à : transmettre, à un terminal, via un signal de couche supérieure, des premières informations relatives à une première unité de ressource utilisée pour un entrelacement ; et exécuter un entrelacement d'une ressource particulière pour le terminal par la première unité de ressource, les informations relatives à la première unité de ressource étant signalées au terminal séparément de secondes informations relatives à une seconde unité de ressource utilisée lorsqu'une station de base attribue des ressources au terminal.
PCT/KR2018/006496 2017-06-08 2018-06-08 Procédé de signalisation associé à l'attribution de ressources dans un système de communications sans fil, et dispositif l'utilisant WO2018226054A1 (fr)

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EP21184329.7A EP3926881B1 (fr) 2017-06-08 2018-06-08 Procédé de signalisation associé à l'attribution de ressources dans un système de communications sans fil, et dispositif l'utilisant
JP2019568063A JP7155166B2 (ja) 2017-06-08 2018-06-08 無線通信システムにおける資源割当関連シグナリング方法及び上記方法を利用する装置
CN201880047556.2A CN110945817B (zh) 2017-06-08 2018-06-08 无线通信系统中的资源分配相关信令方法和使用该方法的设备
EP18813207.0A EP3633902B1 (fr) 2017-06-08 2018-06-08 Procédé de signalisation associé à l'attribution de ressources dans un système de communications sans fil, et dispositif l'utilisant
US16/706,434 US11477791B2 (en) 2017-06-08 2019-12-06 Resource allocation-related signaling method in wireless communication system and device using same

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US201762517131P 2017-06-08 2017-06-08
US62/517,131 2017-06-08
US201762540553P 2017-08-02 2017-08-02
US62/540,553 2017-08-02
US201762571740P 2017-10-12 2017-10-12
US62/571,740 2017-10-12
KR10-2018-0065586 2018-06-07
KR1020180065586A KR101950995B1 (ko) 2017-06-08 2018-06-07 무선 통신 시스템에서 자원 할당 관련 시그널링 방법 및 상기 방법을 이용하는 장치

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US11711803B2 (en) 2018-02-16 2023-07-25 Telefonaktiebolaget Lm Ericsson (Publ) Time domain resource allocation for downlink shared channel
US20210127374A1 (en) * 2018-06-12 2021-04-29 Ntt Docomo, Inc. User terminal
US20210337582A1 (en) * 2019-01-10 2021-10-28 Panasonic Intellectual Property Corporation Of America Transceiver device and scheduling device
US11985682B2 (en) * 2019-01-10 2024-05-14 Panasonic Intellectual Property Corporation Of America Transceiver device and scheduling device
JP7238144B2 (ja) 2019-01-17 2023-03-13 ベイジン スプレッドトラム ハイ－テック コミュニケーションズ テクノロジー カンパニー，リミティド データ伝送方法及び装置
JP2022524706A (ja) * 2019-01-17 2022-05-10 ベイジン スプレッドトラム ハイ－テック コミュニケーションズ テクノロジー カンパニー，リミティド データ伝送方法及び装置
CN111526585A (zh) * 2019-02-01 2020-08-11 中国移动通信有限公司研究院 一种资源配置方法、网络设备、终端和存储介质
CN111526585B (zh) * 2019-02-01 2023-05-12 中国移动通信有限公司研究院 一种资源配置方法、网络设备、终端和存储介质
CN114826533A (zh) * 2019-02-02 2022-07-29 上海朗帛通信技术有限公司 一种被用于无线通信的用户设备、基站中的方法和装置
WO2020162714A1 (fr) * 2019-02-08 2020-08-13 엘지전자 주식회사 Procédé de transmission et de réception de données dans un système de communication sans fil et dispositif associé
US11979233B2 (en) 2019-02-08 2024-05-07 Lg Electronics Inc. Method for transmitting and receiving data in wireless communication system and device for same
CN113273282A (zh) * 2019-02-14 2021-08-17 松下电器（美国）知识产权公司 收发器设备和调度设备
CN112956266B (zh) * 2019-02-15 2022-04-12 Oppo广东移动通信有限公司 资源指示方法及相关设备、计算机可读存储介质
CN112956266A (zh) * 2019-02-15 2021-06-11 Oppo广东移动通信有限公司 资源指示方法及相关设备
CN109983824A (zh) * 2019-02-22 2019-07-05 北京小米移动软件有限公司 数据传输方法、装置及存储介质
WO2020204521A1 (fr) * 2019-03-29 2020-10-08 엘지전자 주식회사 Procédé, équipement utilisateur, dispositif, et support de stockage permettant d'effectuer une transmission de liaison montante, et procédé et station de base permettant d'effectuer une réception de liaison montante
US20220174716A1 (en) * 2019-04-01 2022-06-02 Ntt Docomo, Inc. User terminal and radio communication method
WO2021008517A1 (fr) * 2019-07-18 2021-01-21 大唐移动通信设备有限公司 Procédé de détection de canal de commande de liaison descendante, et procédé et dispositif de transmission
US11395167B2 (en) 2019-10-24 2022-07-19 Samsung Electronics Co., Ltd. Method and apparatus for coreset configuration of unlicensed bands
WO2021080389A1 (fr) * 2019-10-24 2021-04-29 Samsung Electronics Co., Ltd. Procédé et appareil de configuration de coreset de bandes sans licence
US11864012B2 (en) 2019-10-24 2024-01-02 Samsung Electronics Co., Ltd. Method and apparatus for coreset configuration of unlicensed bands
CN112996112A (zh) * 2019-12-12 2021-06-18 大唐移动通信设备有限公司 一种频域资源分配方法、装置、电子设备及存储介质

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