KR20180106860A - Methods for transmitting and receiving a downlink preemption indication using bitmap for new radio networks and Apparatuses thereof - Google Patents

Abstract

Embodiments of the present invention relate to a method for transmitting and receiving downlink preemption indication information using a bitmap in a next-generation/5G radio access network. According to an embodiment of the present invention, the method comprises the steps of: receiving monitoring configuration information for downlink preemption indication information from a base station; monitoring downlink preemption indication information based on the monitoring configuration information; and receiving the downlink preemption indication information from the base station, wherein the downlink preemption indication information includes a bitmap indicating information on at least one of time-section resources or frequency-section resources in which preemption has occurred in reference downlink resources.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for transmitting and receiving downlink preemption indication information using a bitmap in a next generation wireless network,

The present embodiments relate to a method for transmitting and receiving downlink preemption indication information using a bitmap in a next generation / 5G radio access network (hereinafter, also referred to as NR [New Radio]).

3GPP recently approved a study item "Study on New Radio Access Technology" for studying next generation / 5G radio access technology, and based on this, RAN WG1 provides frame structure, channel coding and modulation for NR (New Radio) , Waveforms and multiple access methods. NR is required not only to improve data transmission rate in comparison with LTE / LTE-Advanced, but also to design various requirements that are required according to detailed and specific usage scenarios.

In order to meet the requirements of each scenario, LTE / LTE-Advanced has been proposed as a representative use scenario of NR. In this case, enhancement Mobile BroadBand (MMB), massive Machine Type Communication (MMTC) and Ultra Reliable and Low Latency Communications A flexible frame structure design is required.

In particular, in NR, services such as eMBB and mMTC are more efficient in terms of cell throughput and coverage, while URLLC is more efficient in terms of resource allocation because of the latency problem. Accordingly, there is a need to support efficient multiplexing of data traffic between each service in a network in which eMBB, mMTC, and URLLC services described above are mixed.

It is an object of the present embodiments to provide a concrete scheme for supporting efficient multiplexing of data traffic between respective services in a network in which eMBB, mMTC and URLLC services are mixed in NR.

According to an embodiment of the present invention, there is provided a method of receiving downlink preemption indication information, the method comprising: receiving monitoring setting information for downlink preemption indication information from a base station; And a step of receiving downlink preemption indication information from a base station, wherein the downlink preemption indication information includes at least one of a time division resource or a frequency division resource in which a preemption occurs in a reference downlink resource, And a bitmap indicating information on the bitmap.

According to an embodiment of the present invention, there is provided a method of transmitting downlink preemption indication information in a base station, the method comprising: configuring monitoring setting information for downlink preemption indication information; transmitting monitoring setting information to a terminal; And transmitting the downlink preemption indication information to the mobile station when the preemption occurs, wherein the downlink preemption indication information includes a bitmap indicating information on a time domain resource or a frequency domain resource in which a preemption occurs in a reference downlink resource, The method comprising the steps of:

According to another embodiment of the present invention, there is provided a terminal for receiving downlink preemption indication information, the terminal including: a receiving unit for receiving monitoring setting information for downlink preemption indication information from a base station and receiving downlink preemption indication information from the base station; And a controller for monitoring downlink preemption indication information based on the monitoring setting information, wherein the downlink preemption indication information includes a bitmap indicating information on a time domain resource or a frequency domain resource in which a preemption occurs in a reference downlink resource And a terminal connected to the terminal.

In an exemplary embodiment of the present invention, a base station for transmitting downlink preemption indication information may transmit control and monitoring setup information, which constitutes monitoring setting information for downlink preemption indication information, to a mobile station, And a transmitter for transmitting downlink preemption indication information to the mobile station, wherein the downlink preemption indication information includes a bitmap indicating information on a time domain resource or a frequency domain resource in which a preemption occurs in a reference downlink resource And a base station.

According to the present embodiments, it is possible to provide a concrete scheme for supporting efficient multiplexing of data traffic between each service in a network in which eMBB, mMTC and URLLC services are mixed in the NR.

FIG. 1 illustrates the alignment of OFDM symbols in the case of using different subcarrier spacings according to the present embodiments. Referring to FIG.
FIG. 2 is a diagram illustrating resources when a preemption occurs between the eMBB and the URLLC in the downlink according to the present embodiments.
FIG. 3 is a diagram illustrating resources in the case where a plurality of preemption occurs between the eMBB and the URLLC in the downlink according to the present embodiments.
4 is a diagram illustrating a procedure in which a terminal receives downlink preemption indication information in the present embodiment.
5 is a diagram illustrating a procedure in which a base station transmits downlink preemption indication information in the present embodiment.
FIG. 6 is a diagram illustrating a configuration of a base station according to the present embodiments.
FIG. 7 is a diagram illustrating a configuration of a user terminal according to the present embodiments.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference numerals even though they are shown in different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

As used herein, a wireless communication system refers to a system for providing various communication services such as voice, packet data, and the like. A wireless communication system includes a user equipment (UE) and a base station (BS).

The user terminal is a comprehensive concept that means a terminal in a wireless communication, and it is a comprehensive concept which means a mobile station (MS) in GSM, a mobile station (MS) in UT (User Terminal), a Subscriber Station (SS), a wireless device, and the like.

A base station or a cell generally refers to a station that communicates with a user terminal and includes a Node-B, an evolved Node-B, a gNode-B, a Low Power Node A sector, a site, various types of antennas, a base transceiver system (BTS), an access point, a point (for example, a transmission point, a reception point, a transmission / reception point) (RRH), a radio unit (RU), and a small cell, as well as a relay cell, a relay node, a megacell, a macrocell, a microcell, a picocell, a femtocell, an RRH,

Since the various cells listed above exist in the base station controlling each cell, the base station can be interpreted into two meanings. Macro cell, micro cell, picocell, femtocell, small cell, or 2) the wireless region itself in connection with the wireless region. 1), all of the devices that interact to configure the wireless area to be cooperatively controlled by the same entity are all pointed to the base station. A point, a transmission / reception point, a transmission point, a reception point, and the like are examples of the base station according to the configuration method of the radio area. 2 may direct the base station to the wireless region itself to receive or transmit signals at the point of view of the user terminal or in the vicinity of the neighboring base station.

In this specification, a cell refers to a component carrier having a coverage of a signal transmitted from a transmission point or a transmission point or a transmission point or a transmission / reception point of a signal transmitted from a transmission / reception point, and a transmission / reception point itself .

Herein, the user terminal and the base station are used in a broad sense as two (uplink or downlink) transmitting and receiving subjects used to implement the technology or technical idea described in the present invention, and are not limited by a specific term or word Do not.

Here, an uplink (UL, or uplink) means a method of transmitting / receiving data to / from a base station by a user terminal, and a downlink (DL or downlink) .

The time division duplex (TDD) scheme, which is transmitted using different time periods, can be used for the uplink and downlink transmission, and a frequency division duplex (FDD) scheme in which different frequencies are used, a TDD scheme and an FDD scheme A hybrid method can be used.

In the wireless communication system, the uplink and the downlink are configured with reference to one carrier or carrier pair to form a standard.

The uplink and the downlink transmit control information through a control channel such as a physical downlink control channel (PDCCH), a physical uplink control channel (PUCCH), and the like. The physical downlink shared channel (PDSCH), the physical uplink shared channel (PUSCH) It is composed of the same data channel and transmits data.

A downlink may refer to a communication or communication path from a multipoint transmission / reception point to a terminal, and an uplink may refer to a communication or communication path from a terminal to a multiple transmission / reception point. At this time, in the downlink, the transmitter may be a part of the multiple transmission / reception points, and the receiver may be a part of the terminal. Also, in the uplink, the transmitter may be a part of the terminal, and the receiver may be a part of multiple transmission / reception points.

Hereinafter, a situation in which a signal is transmitted / received through a channel such as PUCCH, PUSCH, PDCCH, and PDSCH is expressed as 'PUCCH, PUSCH, PDCCH and PDSCH are transmitted and received'.

Meanwhile, the High Layer Signaling described below includes RRC signaling for transmitting RRC information including RRC parameters.

The base station performs downlink transmission to the UEs. The base station includes downlink control information, such as scheduling, required for reception of a downlink data channel, which is a primary physical channel for unicast transmission, and physical downlink control information for transmitting scheduling grant information for transmission in an uplink data channel. A control channel can be transmitted. Hereinafter, the transmission / reception of a signal through each channel will be described in a form in which the corresponding channel is transmitted / received.

There are no restrictions on multiple access schemes applied in wireless communication systems. (TDMA), Frequency Division Multiple Access (FDMA), Code Division Multiple Access (CDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Non-Orthogonal Multiple Access (NOMA) Various multiple access schemes such as OFDM-CDMA can be used. Here, the NOMA includes Sparse Code Multiple Access (SCMA) and Low Density Spreading (LDS).

One embodiment of the present invention relates to asynchronous wireless communications that evolve into LTE / LTE-Advanced, IMT-2020 over GSM, WCDMA, HSPA, and synchronous wireless communications such as CDMA, CDMA- Can be applied.

In this specification, a MTC (Machine Type Communication) terminal may mean a terminal supporting low cost (or low complexity) or a terminal supporting coverage enhancement. Alternatively, the MTC terminal may refer to a terminal defined in a specific category for supporting low cost (or low complexity) and / or coverage enhancement.

In other words, the MTC terminal in this specification may mean a newly defined 3GPP Release-13 low cost (or low complexity) UE category / type for performing LTE-based MTC-related operations. In this specification, the MTC terminal supports the enhanced coverage over the existing LTE coverage, or the UE category / type defined in the existing 3GPP Release-12 or lower that supports the low power consumption, or the newly defined Release-13 low cost low complexity UE category / type. Or a further Enhanced MTC terminal defined in Release-14.

In this specification, NarrowBand Internet of Things (NB-IoT) terminal means a terminal supporting wireless access for cellular IoT. The objectives of NB-IoT technology include improved indoor coverage, support for large-scale low-rate terminals, low latency sensitivity, ultra-low cost, low power consumption, and optimized network architecture.

Enhanced Mobile Broadband (eMBB), massive Machine Type Communication (mMTC), and Ultra Reliable and Low Latency Communication (URLLC) have been proposed as typical usage scenarios in NR (New Radio), which is under discussion in 3GPP.

In this specification, a frequency, a frame, a subframe, a resource, a resource block, a region, a band, a subband, a control channel, a data channel, a synchronization signal, various reference signals, various signals, May be interpreted as past or presently used meanings or various meanings used in the future.

NR (New Radio)

3GPP recently approved a study item "Study on New Radio Access Technology" for studying next generation / 5G radio access technology. Based on this, 3GPP has developed frame structure, channel coding and modulation, waveform, The discussion on frame structure, channel coding & modulation, waveform & multiple access scheme, etc. has begun.

NR is required to be designed to satisfy not only the improved data transmission rate as compared to LTE / LTE-Advanced, but also various requirements that are required according to granular and specific usage scenarios. In particular, enhancement Mobile BroadBand (eMBB), massive MTC (MMTC) and Ultra Reliable and Low Latency Communications (URLLC) have been proposed as typical usage scenarios of NR, and requirements for each usage scenario have been proposed. It is required to design a flexible frame structure as compared with LTE / LTE-Advanced.

Specifically, eMBB, mMTC, and URLLC are considered as typical usage scenarios of NR that are being discussed in 3GPP. Since each usage scenario has different requirements for data rates, latency, coverage, etc., it is possible to use each frequency band constituting any NR system A radio resource unit based on different numerology (e.g., subcarrier spacing, subframe, TTI, etc.) is efficiently multiplexed as a method for efficiently satisfying requirements according to usage scenarios there is a need for a multiplexing method.

As a method for this, a numerator with different subcarrier spacing (SCS) values is multiplexed on a TDM, FDM or TDM / FDM basis via one NR carrier to support Methods and methods for supporting one or more time units in constructing scheduling units in the time domain have been discussed. In this regard, in the NR, a subframe has been defined as one type of time domain structure, and a reference numerology for defining a corresponding subframe duration has been described. We decided to define a single subframe duration consisting of 14 OFDM symbols of 15 kHz sub-carrier spacing (SCS) based normal CP overhead as LTE. Accordingly, the subframe in the NR has a time duration of 1 ms. However, unlike LTE, the subframe of the NR is an absolute reference duration, which is the time unit on which the actual uplink data scheduling is based, as a slot and a mini-slot ) Can be defined. In this case, the number of OFDM symbols constituting the corresponding slot and the y-value are determined to have a value of y = 14 irrespective of the numerator.

Accordingly, an arbitrary slot may be composed of 14 symbols, and all symbols may be used for DL transmission according to a transmission direction of the slot, or all symbols may be used for uplink transmission UL transmission, or in the form of a DL portion + a gap + an UL portion.

Also, a minislot consisting of fewer symbols than a corresponding slot is defined in an arbitrary numerology (or SCS), and based on this, a time-domain scheduling interval with a short length for transmitting / receiving data upstream / scheduling interval may be set or a long-time time-domain scheduling interval for uplink / downlink data transmission / reception through slot aggregation may be configured.

In particular, for transmission and reception of latency-critical data such as URLLC, a slot of 0.5 ms (7 symbols) or 1 ms (14 symbols) defined in a transmitter-based frame structure having a small SCS value such as 15 kHz It is difficult to satisfy the latency requirement. Therefore, a mini-slot composed of a smaller number of OFDM symbols than the corresponding slot is defined, and a corresponding URLLC And scheduling for latency critical data such as < RTI ID = 0.0 > a < / RTI >

Alternatively, as described above, multiplexers supporting different SCS values in one NR carrier are multiplexed and supported by the TDM scheme or the FDM scheme, so that the number of slots (or mini- Scheduling of data in accordance with latency requirements is also considered. For example, as shown in FIG. 1, when the SCS is 60 kHz, the symbol length is reduced to about 1/4 of that of the SCS 15 kHz. Therefore, when one slot is composed of 7 OFDM symbols, While the slot length based on 60 kHz is reduced to about 0.125 ms.

As such, NR is discussing how to satisfy the requirements of URLLC and eMBB by defining different SCSs or different TTI lengths.

As described above, a method for supporting a scheduling unit having different lengths in a time domain has been discussed as a method for satisfying various usage scenarios in NR . In particular, in order to satisfy the URLLC requirement, it is necessary to subdivide the scheduling unit in the time domain. However, from the eMBB point of view, an overly fragmented time-domain scheduling unit is undesirable in terms of cell throughput because it involves excessive control overhead. In terms of MMTC, a longer time-slot resource allocation structure may be more suitable for coverage enhancement.

In this embodiment, long time-domain resource allocation such as eMBB and mMTC can efficiently multiplex the data traffic of each service in a network in which services requiring short time-domain resource allocation such as URLLC are mixed. And a method for transmitting and receiving the downlink control information.

The embodiments described below can be applied to a terminal, a base station, and a core network entity (MME) using all mobile communication technologies. For example, the present embodiments can be applied not only to mobile communication terminals to which LTE technology is applied but also to next generation mobile communication (5G mobile communication, New-RAT) terminals, base stations, and access and mobility functions (AMFs). For convenience of explanation, the base station may denote an eNB of an LTE / E-UTRAN or a base station (CU, DU, or CU and DU) in a 5G wireless network in which a CU (Central Unit) An entity implemented as a single logical entity), or gNB.

In the scenario of using NR, URLLC is a service that supports high reliability and low latency. It is used when serious problem occurs when a delay occurs in data transmission / reception although the size of data to be transmitted / received is not large. For example, if the delay of data transmission and reception becomes large, such as an autonomous vehicle, the URLLC service can be used when human and material damage may occur due to a traffic accident.

eMBB is a service that is used when a large amount of data needs to be transmitted and received using a service supporting high-speed data transmission. For example, if a large amount of data needs to be transmitted per unit time, such as a 3D video or UHD service, the eMBB service can be used.

mMTC is a service that is used when the amount of data to be transmitted and received is not large and delay generation is not a problem but low power consumption is required. For example, in the case of sensor equipment installed to build a Smart City, the mMTC service can be used because it must operate for as long as possible with the onboard battery.

In general, one of the three services, URLLC / eMBB / mMTC, is serviced to the terminal according to the characteristics of the terminal. Hereinafter, a terminal using the URLLC service may be referred to as a URLLC terminal, a terminal using the eMBB service may be referred to as an eMBB terminal, and a terminal using the mMTC service may be referred to as a mMTC terminal. EMBB, mMTC, and URLLC can also be interpreted as eMBB terminals, mMTC terminals, and URLLC terminals, respectively.

In this embodiment, preemption means that a part of resources allocated to the eMBB or mMTC is re-allocated to the URLLC in order to satisfy the latency requirement for the URLLC when a traffic for the URLLC is generated, The term " puncturing " or " superposition ", as in the embodiment, may be expressed by the following (however, the present invention is not limited by the name). When such preemption occurs, the downlink data transmission to the eMBB terminal is discontinuously interrupted in the middle for the downlink data transmission to the URLLC terminal. Therefore, the occurrence of a preemption in the present embodiment can be interpreted as a discontinuous transmission from the viewpoint of the eMBB terminal, and the occurrence of a preemption can be regarded as the occurrence of a discontinuous transmission It is also possible to express.

At this time, because the resource allocated to the original eMBB or mMTC is used in URLLC, the eMBB terminal or mMTC terminal to which the original resource has been allocated should receive information on which resource is preempted. The downlink preemption means that a preemption occurs for the downlink resources of the UE.

The downlink preemption indication information is information for indicating to the terminal which data channel is preempted in the downlink, and can be expressed as downlink preemption notification information since it is information informing the terminal of the downlink preemption have. The downlink preemption indication information may be indicated in the form of a signal or a channel.

Hereinafter, more specific embodiments of a method for transmitting and receiving downlink preemption indication information between a terminal and a base station will be described in detail.

The embodiments described below may be applied individually or in any combination.

As described above, in order to support the URLLC service in the NR, a short scheduling unit (TTI, or Transmission Time Interval) capable of satisfying a latency boundary in a time domain is supported There is a need. On the other hand, in the case of eMBB or mMTC, in defining a scheduling unit in the time domain, applying a slightly longer time-domain resource allocation unit than the usage scenario of the URLLC, can be efficient in terms of control overhead and coverage.

In order to satisfy the usage scenarios of various NRs at the same time, it is necessary to use a subcarrier spacing (eg, larger subcarrier spacing such as 60 kHz, 120 kHz, etc.) which is easy to define a short time- mixed numerology that supports numerology of subcarrier spacing suitable for eMBB and mMTC (eg, 15kHz for eMBB or 3.75kHZ for mMTC) via a single NR carrier, Or a time domain scheduling unit having different lengths such as a sub-frame or a slot or a mini-slot in an NR carrier operating with any one numerology. -domain scheduling unit at the same time.

As an example of a method for this, a time / frequency resource (or a time / frequency resource (or region)) in which resource allocation is performed based on an optimal scheduling unit for each usage scenario is semi-fixed semi-static), and resource allocation can be performed using a time / frequency resource of a corresponding region according to a usage scenario for each terminal.

However, semi-static resource allocation in an environment where traffic generation is performed randomly for each usage scenario is inefficient in terms of radio resource utilization.

As a method for solving this problem, some of the downlink radio resources allocated for data transmission of an eMBB or mMTC are punctured in order to allocate downlink data transmission resources and used for urgent URLLC data transmission / reception There is a need for support for eMBB / URLLC multiplexing based on dynamic puncturing (or superposition based superposition and superimposition of URLLC data transmission signals for certain radio resources) .

That is, an eMBB (or an eNodeB) which punctures (or superposes) a part of the eMBB (or mMTC) downlink resources that have already been allocated and are in the process of being transmitted is used for urgent URLLC data transmission / URLLC to support dynamic resource sharing.

In addition, when dynamic resource sharing based on dynamic puncturing (or superposition) between eMBB and URLLC is applied to NR downlink, puncturing is performed for URLLC data transmission, And an explicit signaling is used to indicate the radio resource to the corresponding eMBB terminal.

At this time, as an explicit signaling based indication method, a corresponding puncturing is performed in a TTI (or a slot, a mini-slot, or a merged slot) in which downlink data transmission is performed in the corresponding eMBB terminal a method of indicating puncturing information and a method of indicating puncturing through a subsequent TTI after the corresponding TTI are considered.

In this embodiment, when dynamic resource sharing between eMBBs and URLLCs is applied, a method of configuring information and controlling a puncturing indication for an eMBB terminal and a transmitting and receiving method are proposed.

However, in the present embodiment, a usage scenario such as an eMBB or a URLLC is described. However, from the viewpoints of radio resource allocation and downlink data transmission / reception, the eMBB is a slot or a long slot A short-term time resource allocation such as a mini-slot or a symbol or a slot unit based on a large SCS (e.g., 60 kHz, 120 kHz) may be allocated to a terminal or a data session in which a resource allocation unit is defined. A unit may correspond to a defined terminal or data session.

Specifically, a puncturing (or superposition) of a mini- slot or a symbol is performed in a downlink data transmission resource allocated in an arbitrary slot unit or a plurality of slot units, or the corresponding mini-slot or symbol All of the PDSCHs in which puncturing for partial radio resources is performed for an on-going downlink transmission in which puncturing (or superposition) is performed only for some frequency resources (some PRBs) This embodiment can be applied to transmission and reception.

Accordingly, in the present embodiment, as shown in FIG. 2, a first terminal (eg, an eMBB terminal) or a data based on a scheduling unit based on a slot unit or a long time interval unit in which puncturing among given DL data transmission resources can be performed Of the downlink data. The second terminal (e.g., a URLLC terminal) or data corresponds to downlink data transmission using puncturing a part of the downlink resources allocated for the eMBB terminal or data transmission.

In this embodiment, as shown in FIG. 2, when a part of the PDSCH transmission resources of the first terminal is punctured for PDSCH transmission of the second terminal, a message indicating to puncturing the corresponding terminal is punctured And a radio resource allocation method for transmitting and receiving the control information.

However, this embodiment is not limited by the name. That is, as a method of multiplexing between data transmissions having different latency requirements or differently based on transmission time interval (TTI) based scheduling, some of the already allocated PDSCH transmission resources Based on a preemption basis used for puncturing other PDSCH transmissions (e.g., the second PDSCH transmission for the second terminal) by puncturing a first PDSCH transmission resource for a first UE When the PDSCH multiplexing method of the PDSCH multiplexing method is applied, downlink control information of the base station for indicating transmission resource information punctured for the second PDSCH transmission among the first PDSCH transmission resources to the first UE The puncturing indication is described as downlink control information (DCI), which is a preemption indication DCI, And thus the scope of the present embodiment is not limited thereby.

Punting  Definition of downlink control information format for indication / preemption indication DCI  format for puncturing indication / pre- emption  indication)

A DCI format (e.g., DL assignment DCI format) used for transmitting scheduling control information for resource allocation used for PDSCH / PUSCH transmission / reception for puncturing indication / preemption indication, A puncturing indication / preemption indication DCI format (however, the present invention is not limited by the name) may be defined separately from the UL grant DCI format.

Puncturing Indication / Preemption Indication DCI format will be described with reference to FIG. 2 as an example. In the case of FIG. 2, a PDSCH transmission resource allocated to a first UE is punctured for transmission of a second PDSCH for a second UE. Is a DCI format for instructing the first UE about content of puncturing (or superposition) radio resources. The concrete embodiment proposed by the present invention for constructing the corresponding DCI format is the same as the following embodiment.

1st Example

First, the puncturing indication / preemption indication information may be defined to be UE-specific signaling. When a dynamic resource sharing between a first terminal and a second terminal is applied, a maximum of one mini-slot level (or consecutive) slots for one PDSCH transmission transmitted on a slot basis or a plurality of slot basis Symbol level) can be allowed to be punctured.

That is, as shown in FIG. 2, only puncturing by a maximum of one second PDSCH transmission in the first PDSCH region is allowed. In this case, the DCI format for the corresponding puncturing indication / preemption indication may be a mini-slot index or a symbol index (e.g., a symbol) to indicate punctured time- symbol index or the index of the start symbol and the number of symbols constituting the time-base resource (starting symbol index + symbol duration).

At this time, the length of the mini-slot (i.e., the number of symbols constituting the mini-slot) and the number of the mini-slot boundary and the number of the sub-slots forming the DL (centric) slot, which are the units of puncturing (I) a UE-specific cell-specific higher layer signaling for each UE, ii) puncturing indication / puncturing indication / preemption indication signal, or iii) implicitly determined by a transport subcarrier spacing (SCS) value set in the corresponding terminal / cell / slot.

The puncturing indication / preemption indication information may include indication information for a punctured physical resource block (punctured PRB (s)) within the punctured mini- slot. At this time, the information indicating the punctured physical resource block (punctured PRB (s)) may include i) an assigned PRB or a PRB group consisting of a plurality of localized or distributed PRBs (s) (Ii) the second PDSCH scheduling control information (i.e., the second PDSCH scheduling control information included in the DL assignment DCI format for the second PDSCH) PRB allocation information can be defined to be reused.

The puncturing indication / preemption indication information includes a transmission / pre-emption / puncturing type (note that the present invention refers to a transmission / pre-emption / puncturing type name And the like). The transmission / preemption / puncturing type is a transmission type in which the transmission of the second PDSCH in the corresponding radio resource is punctured or superposed on the first PDSCH and is transmitted Or an information area indicating whether or not the information is to be displayed.

In addition, the puncturing indication / preemption indication information indicates retransmission of the first PDSCH or the entire first PDSCH corresponding to the punctured or overlapped radio resource region and the retransmission of HARQ Reconfiguration information of the PUCCH for ACK / NACK feedback, and the like.

Second Example

The puncturing indication / preemption indication information may be UE-specific signaling. And PDSCH transmission for a plurality of terminals or puncturing for transmission of a plurality of PDSCHs is allowed in the first PDSCH transmission for any first terminal in which a PDSCH resource allocation in slot units or a plurality of slots is performed can do. That is, as shown in FIG. 3, puncturing for a plurality of PDSCH transmissions in the first PDSCH region is performed by a BS / network / cell, such as a second PDSCH, a third PDSCH, a fourth PDSCH, It can be defined to be allowed.

In this case, the puncturing indication / preemption indication information includes a separate puncturing indication / preemption indication for each of the second PDSCH, the third PDSCH, the fourth PDSCH, ) Can be defined to be signaled individually via DCI.

Specifically, one puncturing indication / preemption indication DCI format is defined as a form for indicating puncturing or preemption information by a single PDSCH transmission as in the first embodiment. If puncturing by a plurality of PDSCHs is performed, a puncturing indication / preemption indication DCI corresponding to a corresponding number of puncturing indication / preemption indication DCI is configured to be transmitted to the corresponding first terminal .

As another method for puncturing indication / preemption indication, when a plurality of puncturing is supported, one puncturing indication / preemption indication DCI format And puncturing by a plurality of PDSCHs at the same time. In this case, the puncturing indication / preemption indication DCI format indicates the number of punctured mini- slots or the number of punctured PDSCHs transmitted in the corresponding PDSCH TTI. It is possible to include an information area for instructing.

That is, since puncturing is performed for three mini-slots or three PDSCH transmissions in the first PDSCH transmission TTI in FIG. 3, a puncturing indication / preemption indication / preemption indication) can be defined in the DCI format.

Slot (or symbol unit or symbol group unit) configuring the corresponding PDSCH transmission TTI, and then determines whether or not puncturing occurs in each of the mini- slots (or symbol or symbol group) It can be defined to indicate by map method.

Or a corresponding puncturing indication / preemption indication DCI format aggregation level, i.e. puncturing indication / preemption indication DCI format An aggregation level of a radio resource used for DCI format transmission A puncturing indication / preemption indication corresponding to the number of control channel elements (CCEs), and a search space (SS, Search Space) to which the DCI is transmitted. Slots that are punctured and the number of punctured PDSCHs implicitly indicated by puncturing the number of punctured PDSCHs.

The PUCCH reconfiguration information for the PRB allocation information, the transmission / pre-emption / puncturing type, the retransmission status, and the HARQ ACK / NACK feedback of the first UE in the corresponding mini-slot Etc. can be transmitted in the same manner as in the first embodiment described above.

However, in the first and second embodiments described above, the RNTI value of the UE for monitoring the puncturing indication / preemption indication DCI may be used for monitoring the scheduling DCI format of the corresponding UE A UE-specific RNTI for monitoring the DCI that is the same as the assigned UE-specific RNTI value or indicates puncturing is used for high layer signaling, Lt; / RTI >

Third Example

The puncturing indication / preemption indication information may be specifically transmitted in a cell-specific or TTI / slot / multiple-slot.

Specifically, the PDSCH transmission resource allocation information of the URLLC that has influenced the PDSCH of the eMBB is divided into UE-group common (or group-common) (or group- And can be defined to be transmitted via control signaling of a common (group-common) representation. That is, the puncturing indication / preemption indication DCI format is transmitted specifically to the slot-specific or UE-group, and the influence of the puncturing indication / preemption indication on the PDSCH of the eMBB (I.e., transmitted by puncturing the eMBB PDSCH resource) indicating the PDSCH transmission resource of the URLLC.

To this end, a separate UE-group specific RNTI or cell-specific / slot-specific RNTI for monitoring puncturing indication / preemption indication information is provided. specific RNTI can be defined. The above-described RNTI can be used for UE-specific / cell-specific / UE-group-specific higher layer signaling for each UE-group Or may be implicitly defined as a function of a slot index, a cell ID, and the like.

A method for constructing a concrete information region of a puncturing indication DCI format specific to a corresponding cell-specific or TTI / slot / multiple-slot is as described above 1 or embodiment of the second embodiment.

That is, a UE-group common DCI for puncturing indication / preemption indication is configured and the corresponding DCI is configured for UE-group common ) Puncturing / preemption indication, the puncturing / preemption indication information transmitted through the corresponding DCI can be transmitted to the radio base station Time-domain resource indication information or frequency-domain resource indication information. In addition, the time-slot resource indication information and the frequency resource section indication information may follow the contents described in the first embodiment or the second embodiment.

As a specific example of this, a preemption window and a preemption interval (to be referred to as a name) to constitute information indicating a time zone resource having puncturing or preemption The invention is not limited).

The preemption window includes a puncturing indication / preemption indication DCI transmission period or a puncturing indication / preemption indication DCI transmission control resource set (CORESET, Control Resource Set).

For example, as shown in FIG. 2 or 3, a puncturing instruction / preemption indication (puncturing / preemption indication) for notifying whether puncturing / preemption is performed at a period of a TTI of a first terminal having a long time- indication / preemption indication Consider when a DCI is sent and a control resource set (CORESET) is defined for it. At this time, the TTI of the first terminal can be defined as a preemption window.

Or a puncturing indication / preemption indication when a signal indicating a preemption is transmitted in units of a plurality of first PDSCH TTIs is transmitted in units of a plurality of first PDSCH TTIs in accordance with a transmission / A preemption window can be defined.

The preemption interval allocates resources of a second PDSCH, a third PDSCH, or a fourth PDSCH for performing preemption-based PDSCH transmission / reception by puncturing a part of the first PDSCH transmission resources And can be determined by the time interval scheduling unit used for the time interval.

That is, the preemption interval may be determined in units of TTI for PDSCH transmission / reception of the second terminal, the third terminal or the fourth terminal. Accordingly, when the base station / network configures monitoring setting information for a puncturing indication / preemption indication DCI for an arbitrary terminal (eg, first terminal), the base station / network also sets a preemption window Information can be directly set and transmitted to the terminal through higher layer signaling.

Alternatively, the base station / network may transmit information for setting a period of a control resource set (CORESET) for monitoring a puncturing indication / preemption indication DCI for an arbitrary terminal (e.g., a first terminal) (higher layer signaling) to the terminal, and based on the information, the terminal can define information about the preemption window.

Also, the setting information for the preemption interval is set through i) higher layer signaling from the base station / network, or ii) the puncturing indication / Puncturing indication / preemption indication dynamically indicated through DCI or iii) puncturing indication / preemption indication DCI or PDSCH with preemption-based resource allocation PDSCH, the third PDSCH, and the fourth PDSCH).

When a preemption interval is defined as a time unit of preemption in the preemption window, the corresponding puncturing indication / preemption indication DCI is determined in accordance with the embodiment 1 Alternatively, as described in Embodiment 2, i) directly indicates an index for a preemption interval in which a preemption occurs within a preemption window, or ii) an index indicating a preemption interval based on a bitmap the preemption interval can be defined to indicate the preemption interval at which the preemption occurs.

When directly indicating an index for a preemption interval, a UE-group common puncturing indication / preemption indication DCI is a preemption interval / ) Of the preamble. If a preemption occurs in a plurality of preemption intervals within a preemption window, a separate UE-group common puncturing indication / preemption indication is provided for each preemption interval. Puncturing indication / preemption indication DCI can be defined and transmitted.

Puncturing indication / preemption indication When DCI is composed of bitmap-based preemption interval indication information, a puncturing indication / preemption indication ) The DCI can indicate a plurality of preemption intervals in which a preemption occurs within the preemption window.

In the case described above, an information area for indicating a frequency interval resource in which a preemption occurs for each preemption interval is separately defined and included in a puncturing indication / preemption indication DCI .

Puncturing indication / preemption indication UE-group common puncturing indication / preemption indication A method for constructing information indicating frequency domain resources for radio resources preempted through DCI, As described above, the information indicating the corresponding frequency domain resource may be bitmap indication information based on an RB (Resource Block) or an RBG (Resource Block Group).

At this time, a puncturing indication / preemption indication is transmitted to a bandwidth part that is the target of the corresponding RBG or RB indication information puncturing or preemption through the DCI, a UE-group common bandwidth part for preemption is set by a base station / network and a preemption indication information is monitored through higher layer signaling, As shown in FIG. And puncturing indication / preemption indication. The RB or RBG indication information transmitted through the DCI is indicative of RBs or RBGs constituting a bandwidth part for preemption. May be defined by the base station and interpreted by the terminal.

A plurality of bandwidth parts for preemption are set by the base station and a preemption is made through the puncturing indication / preemption indication DCI frequency domain resource indication information The RB or RBG indication information in the bandwidth part and the indication information of the generated bandwidth part may be transmitted.

In this case, a subcarrier spacing (SCS) value for defining an RB grid constituting a bandwidth part for preemption may be determined by i) setting in the base station / network and using higher layer signaling, Ii) puncturing indication / preemption indication dynamically indicated via DCI or iii) puncturing indication / preemption indication DCI or preemption indication is defined explicitly or implicitly by a value of a subcarrier spacing (SCS) for transmission of a PDSCH (eg, a second PDSCH, a third PDSCH, and a fourth PDSCH) on which preemption based resource allocation is performed .

 Puncturing indication / preemption indication DCI is used to configure a full band of the corresponding NR component carrier (CC), instead of constructing a separate bandwidth part for preemption or preemption. (UE) common RB grid (RB) defined on the basis of the entire NR component carrier (CC), and transmits the RB or RBG information grid) based on the RB or RBG indication information.

Also in this case, a subcarrier spacing (SCS) value defining a corresponding UE-common RB grid may be i) set in the corresponding base station / network and transmitted through higher layer signaling, or ii) Puncturing indication / preemption indication dynamically indicated through the DCI or iii) puncturing indication / preemption indication DCI or preemption-based resource allocation May be defined explicitly or implicitly by a subcarrier spacing (SCS) value for transmission of a PDSCH (e.g., a second PDSCH, a third PDSCH, a fourth PDSCH).

In addition, when information indicating a frequency band resource is configured in units of RBG, the size of the RBG is set by i) higher layer signaling from the base station / network or ii) puncturing indication / puncturing indication / preemption indication DCI or iii) puncturing indication / preemption indication DCI or preemption-based resource allocation PDSCH (eg, a second PDSCH, a third PDSCH , The bandwidth of the bandwidth part or the bandwidth of the NR component carrier (CC) for the preemption and the subcarrier spacing (SCS) value for the transmission of the fourth PDSCH have.

4 is a diagram illustrating a procedure in which a terminal receives downlink preemption indication information in the present embodiment.

Referring to FIG. 4, the terminal can receive monitoring setting information for downlink preemption indication information from the base station (S400). At this time, the monitoring setting information may include information on whether to monitor the downlink preemption indication.

That is, information on whether to monitor the downlink preemption indication information or not to monitor the downlink preemption indication information used for indicating whether the terminal has generated the downlink preemption can be included in the monitoring setting information. For example, in the case of an eMBB terminal, it is necessary to monitor the downlink preemption indication information because there is a possibility that the resource allocated to itself is preempted by the URLLC terminal. However, in the case of the URLLC terminal, it may not be necessary to monitor the downlink preemption indication information because there is no possibility that the resource allocated to the terminal is preempted by other terminals.

In step S410, the terminal monitors the downlink preemption indication information based on the monitoring setting information received in step S400.

If the terminal monitors the downlink preemption indication information, the terminal can receive the downlink preemption indication information from the base station (S420).

At this time, the downlink preemption indication information may be indicated through a group-common DCI. The group-common DCI may be transmitted to the UE through a downlink control channel (PDCCH). That is, the UE can receive the puncturing indication / preemption indication DCI described above in the third embodiment.

The downlink preemption indication information may include a bitmap indicating information on a time domain resource or a frequency domain resource in which a preemption occurs in a reference downlink resource.

Here, the reference downlink resource refers to a resource that is the object of preemption. That is, a preemption may occur with respect to a partial area of the reference downlink resource, and the terminal can determine which part of the reference downlink resource corresponds to the area where the preemption occurs, using the bitmap described above.

In this case, the time period of the reference downlink resource can be set to the preemption window described in the third embodiment, and the frequency interval can be set to the bandwidth part described in the third embodiment.

For example, the bitmap may be composed of 14 bits, and each bit of the bitmap may indicate one of M different time domain resources and may indicate one of N different frequency domain resources. At this time, M and N are natural numbers of 1 or more.

In this case, (M * N) different resources can be determined by different M time-domain resources and different N frequency-domain resources, and in order to distinguish each resource, Should be mapped. Therefore, it is possible to set two cases in which M = 14, N = 1 or M = 7 and N = 2 among pairs of natural numbers M * N satisfying (M * N) = 14.

The UE can receive information for setting a unit of time resource and a unit of frequency resource, which are information indicated by downlink preemption indication information, from a base station through upper layer signaling. The unit of the time domain resource can be expressed by the preemption interval described in the third embodiment, and the unit of the frequency domain resource can be represented by one or more RBs or RBGs described in the third embodiment.

For example, the UE receives information on whether M and N correspond to M = 14, N = 1 or M = 7 and N = 2 through the upper layer signaling such as RRC from the base station, The value obtained by dividing the total time domain resource of the link resource by M and the time domain resource of the reference downlink resource by N can be set as the frequency resource unit. In this case, the value of M and N can be represented by using a one-bit indicator since it is one of the two types.

In another example, the UE may transmit information indicating the number of symbols of the time domain resource or the number of RB (or RBG) units of the frequency domain resource to the upper layer signaling such as RRC As shown in FIG.

In this case, the unit of time resource and the unit of frequency resource indicated by each bit of the bitmap may be constant for all bits of the bitmap, and the index (eg, slot index) And the index of the frequency resource (e.g., the RB index).

개의 비트가 지시하는 시구간 자원의 단위는

개의 심볼이고, 나머지

개의 비트가 지시하는 시구간 자원의 단위는

개의 심볼일 수 있다.For example, when M = 14, N = 1 and the total time-domain resource of the reference downlink resource is composed of T symbols, the first of the 14 bits constituting the bitmap

The units of time-period resources indicated by the bits are

Symbols, and the rest

The units of time-period resources indicated by the bits are

Lt; / RTI > symbols.

개의 쌍의 비트가 지시하는 시구간 자원의 단위는

개의 심볼이고, 나머지

개의 쌍의 비트가 지시하는 시구간 자원의 단위는

개의 심볼일 수 있다. 그리고 전술한 각 쌍에서 첫 번째 비트가 지시하는 주파수 구간 자원의 단위는

개의 PRB이고, 두 번째 비트가 지시하는 주파수 구간 자원의 단위는

개의 PRB일 수 있다.In another example, when M = 7 and N = 2, the total time domain resource of the reference downlink resource is composed of T symbols, the entire frequency domain resource of the reference downlink resource is composed of B PRBs, 14 bits can be configured as a pair of 7 bits. At this time, the first of the seven pairs constituting the bitmap

The unit of time-domain resource indicated by the pairs of bits is

Symbols, and the rest

The unit of time-domain resource indicated by the pairs of bits is

Lt; / RTI > symbols. And the unit of the frequency domain resource indicated by the first bit in each pair described above is

PRB, and the unit of the frequency domain resource indicated by the second bit is

Lt; / RTI >

5 is a diagram illustrating a procedure in which a base station transmits downlink preemption indication information in the present embodiment.

Referring to FIG. 5, the base station can configure monitoring setting information for downlink preemption indication information (S500). At this time, as described with reference to FIG. 4, the monitoring setting information may include information on whether to monitor the downlink preemption indication.

In addition, the base station may transmit the above-described monitoring setting information to the terminal (S510).

In addition, when the downlink preemption occurs, the base station may transmit the downlink preemption indication information to the terminal (S520).

At this time, the downlink preemption indication information may be indicated through a group-common DCI. A group-common DCI may be transmitted to the UE through a downlink control channel (PDCCH). That is, the BS may transmit the puncturing indication / preemption indication DCI to the UE in the third embodiment.

At this time, the downlink preemption indication information may include a bitmap indicating information on a time domain resource or a frequency domain resource in which a preemption occurs in a reference downlink resource.

Here, the reference downlink resource refers to a resource that is the object of preemption. That is, a preemption may occur in a partial area of the reference downlink resource, and the base station may transmit to the terminal, which part of the reference downlink resource corresponds to the area where the preemption occurs, using the bitmap.

In this case, the time period of the reference downlink resource can be set to the preemption window described in the third embodiment, and the frequency interval can be set to the bandwidth part described in the third embodiment.

For example, the bitmap may be composed of 14 bits, and each bit of the bitmap may indicate one of M different time domain resources and may indicate one of N different frequency domain resources. At this time, M and N are natural numbers of 1 or more.

In this case, (M * N) different resources can be determined by different M time-domain resources and different N frequency-domain resources, and in order to distinguish each resource, Should be mapped. Therefore, it is possible to set two cases in which M = 14, N = 1 or M = 7 and N = 2 among pairs of natural numbers M * N satisfying (M * N) = 14.

The base station can transmit information for setting a unit of time resource and a unit of frequency resource, which are information indicated by downlink preemption indication information, to a terminal through upper layer signaling. The unit of the time domain resource can be expressed by the preemption interval described in the third embodiment, and the unit of the frequency domain resource can be expressed by one or more RBs or RBGs described in the third embodiment.

For example, the base station transmits information on whether M and N correspond to M = 14, N = 1, or M = 7 or N = 2 to the terminal through upper layer signaling such as RRC, A UE can set a value obtained by dividing the total time-domain resource of the reference downlink resource by M, as a unit of time-domain resources, and set a value obtained by dividing the total time-domain resource of the reference downlink resource by N, as a frequency resource unit .

In another example, the base station may transmit information indicating how many symbols of the time domain resource are composed of symbols or how many RBs (or RBGs) of the frequency domain resources are composed by upper layer signaling such as RRC It may be transmitted to the terminal.

6 is a diagram illustrating a configuration of a base station according to the present embodiments.

6, the base station 600 includes a control unit 610, a transmission unit 620, and a reception unit 630.

The control unit 610 may configure monitoring setting information for the downlink preemption indication information. At this time, as described above, the monitoring setting information may include information on whether to monitor the downlink preemption indication information.

The transmitting unit 620 and the receiving unit 630 are used to transmit and receive signals, messages, and data necessary for carrying out the present invention to and from the terminal.

The transmission unit 620 may transmit the monitoring setting information to the terminal and may transmit the downlink preemption indication information to the terminal when the downlink preemption occurs.

At this time, the downlink preemption indication information may be indicated through a group-common DCI. A group-common DCI may be transmitted to the UE through a downlink control channel (PDCCH). That is, the BS may transmit the puncturing indication / preemption indication DCI to the UE in the third embodiment.

In this case, as described with reference to FIG. 5, the downlink preemption indication information may include a bitmap indicating information on a time domain resource or a frequency domain resource in which a preemption occurs in a reference downlink resource.

For example, the bitmap may be composed of 14 bits, and each bit of the bitmap may indicate one of M different time domain resources and may indicate one of N different frequency domain resources. At this time, M and N are natural numbers of 1 or more.

In this case, (M * N) different resources can be determined by different M time-domain resources and different N frequency-domain resources, and in order to distinguish each resource, Should be mapped. Therefore, it is possible to set two cases in which M = 14, N = 1 or M = 7 and N = 2 among pairs of natural numbers M * N satisfying (M * N) = 14.

The base station can transmit information for setting a unit of time resource and a unit of frequency resource, which are information indicated by downlink preemption indication information, to a terminal through upper layer signaling. The unit of the time domain resource can be expressed by the preemption interval described in the third embodiment, and the unit of the frequency domain resource can be expressed by one or more RBs or RBGs described in the third embodiment.

For example, the base station transmits information on whether M and N correspond to M = 14, N = 1, or M = 7 or N = 2 to the terminal through upper layer signaling such as RRC, A UE can set a value obtained by dividing the total time-domain resource of the reference downlink resource by M, as a unit of time-domain resources, and set a value obtained by dividing the total time-domain resource of the reference downlink resource by N, as a frequency resource unit .

In another example, the base station may transmit information indicating how many symbols of the time domain resource are composed of symbols or how many RBs (or RBGs) of the frequency domain resources are composed by upper layer signaling such as RRC It may be transmitted to the terminal.

FIG. 7 is a diagram illustrating a configuration of a user terminal according to the present embodiments.

7, the user terminal 700 includes a receiving unit 710, a control unit 720, and a transmitting unit 730.

The receiving unit 710 receives downlink control information, data, and a message from the base station through the corresponding channel. Specifically, the receiver 710 can receive monitoring setting information for downlink preemption indication information from the base station and also receive downlink preemption indication information.

At this time, as described above, the monitoring setting information may include information on whether to monitor the downlink preemption indication information.

The control unit 720 may monitor the downlink preemption indication information based on the above-described monitoring setting information.

At this time, the downlink preemption indication information may be indicated through a group-common DCI. The group-common DCI may be transmitted to the UE through a downlink control channel (PDCCH). That is, the UE can receive the puncturing indication / preemption indication DCI described above in the third embodiment.

The downlink preemption indication information may include a bitmap indicating information on a time domain resource or a frequency domain resource in which a preemption occurs in a reference downlink resource. Herein, the reference downlink resource refers to a resource that is the object of preemption as described with reference to FIG.

For example, the bitmap may be composed of 14 bits, and each bit of the bitmap may indicate one of M different time domain resources and may indicate one of N different frequency domain resources. At this time, M and N are natural numbers of 1 or more.

In this case, (M * N) different resources can be determined by different M time-domain resources and different N frequency-domain resources, and in order to distinguish each resource, Should be mapped. Therefore, it is possible to set two cases where M = 14, N = 1 or M = 7 and N = 2 among the pair of natural numbers M * N satisfying (M * N) = 14.

The UE can receive information for setting a unit of time resource and a unit of frequency resource, which are information indicated by downlink preemption indication information, from a base station through upper layer signaling. The unit of the time domain resource can be expressed by the preemption interval described in the third embodiment, and the unit of the frequency domain resource can be represented by one or more RBs or RBGs described in the third embodiment.

For example, the UE receives information on whether M and N correspond to M = 14, N = 1 or M = 7 and N = 2 through the upper layer signaling such as RRC from the base station, The value obtained by dividing the total time domain resource of the link resource by M and the time domain resource of the reference downlink resource by N can be set as the frequency resource unit.

In another example, the UE may transmit information indicating the number of symbols of the time domain resource or the number of RB (or RBG) units of the frequency domain resource to the upper layer signaling such as RRC As shown in FIG.

The standard content or standard documents referred to in the above-mentioned embodiments constitute a part of this specification, for the sake of simplicity of description of the specification. Therefore, it is to be understood that the content of the above standard content and portions of the standard documents are added to or contained in the scope of the present invention.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

Claims (24)

A method for a terminal to receive downlink preemption indication information,
Receiving monitoring setting information for downlink preemption indication information from a base station;
Monitoring downlink preemption indication information based on the monitoring setting information; And
And receiving the downlink preemption indication information from the base station,
The downlink preemption indication information includes:
And a bitmap indicating information on a time domain resource or a frequency domain resource in which a preemption occurs in a reference downlink resource.
The method according to claim 1,
The downlink preemption indication information includes:
Group-common < / RTI > DCI.
The method according to claim 1,
The information for setting the unit of the time-domain resource and the unit of the frequency-
And is received from the base station via higher layer signaling.
The method according to claim 1,
The bit map may include:
Gt; 14 bits. ≪ / RTI >
5. The method of claim 4,
Wherein each bit of the bitmap comprises:
Pointing to one of M different time-domain resources, and indicating one of N different frequency-domain resources.
6. The method of claim 5,
Wherein M and N are numbers,
M = 14, N = 1, or M = 7, N = 2.
A method for transmitting downlink preemption indication information by a base station,
Configuring monitoring setting information for downlink preemption indication information;
Transmitting the monitoring setting information to the terminal; And
And transmitting the downlink preemption indication information to the terminal when the downlink preemption occurs,
The downlink preemption indication information includes:
And a bitmap indicating information on a time domain resource or a frequency domain resource in which a preemption occurs in a reference downlink resource.
8. The method of claim 7,
The downlink preemption indication information includes:
To the terminal through a group-common DCI.
8. The method of claim 7,
The information for setting the unit of the time-domain resource and the unit of the frequency-
And the upper layer signaling is transmitted to the terminal.
8. The method of claim 7,
The bit map may include:
Gt; 14 bits. ≪ / RTI >
11. The method of claim 10,
Wherein each bit of the bitmap comprises:
Pointing to one of M different time-domain resources, and indicating one of N different frequency-domain resources.
12. The method of claim 11,
Wherein M and N are numbers,
M = 14, N = 1, or M = 7, N = 2.
A terminal for receiving downlink preemption indication information,
A receiving unit for receiving monitoring setting information for downlink preemption indication information from a base station and receiving the downlink preemption indication information from the base station; And
And a controller for monitoring downlink preemption indication information based on the monitoring setting information,
The downlink preemption indication information includes:
And a bitmap indicating information on a time-domain resource or a frequency-domain resource in which a preemption occurs in a reference downlink resource.
14. The method of claim 13,
The downlink preemption indication information includes:
And is directed via a group-common DCI.
14. The method of claim 13,
The information for setting the unit of the time-domain resource and the unit of the frequency-
And is received from the base station via upper layer signaling.
14. The method of claim 13,
The bit map may include:
14 bits.
17. The method of claim 16,
Wherein each bit of the bitmap comprises:
Wherein the mobile station indicates one of M different time domain resources and indicates one of N different frequency domain resources.
18. The method of claim 17,
Wherein M and N are numbers,
M = 14, N = 1, or M = 7, N = 2.
A base station for transmitting downlink preemption indication information,
A controller configured to configure monitoring setting information for downlink preemption indication information; And
And a transmitter for transmitting the monitoring setting information to the terminal and for transmitting the downlink preemption indication information to the terminal when a downlink preemption occurs,
The downlink preemption indication information includes:
And a bitmap indicating information on a time-domain resource or a frequency-domain resource in which a preemption occurs in a reference downlink resource.
20. The method of claim 19,
The downlink preemption indication information includes:
And is transmitted to the terminal through a group-common DCI.
20. The method of claim 19,
The information for setting the unit of the time-domain resource and the unit of the frequency-
And the uplink signal is transmitted to the terminal through upper layer signaling.
20. The method of claim 19,
The bit map may include:
14 bits.
23. The method of claim 22,
Wherein each bit of the bitmap comprises:
Wherein the mobile station indicates one of M different time domain resources and indicates one of N different frequency domain resources.
24. The method of claim 23,
Wherein M and N are numbers,
M = 14, N = 1, or M = 7, N = 2.

Images