KR102100483B1 - Methods for monitoring, transmitting and receiving a downlink preemption indication for new radio networks and Apparatuses thereof - Google Patents

Abstract

The present embodiments relate to a method of monitoring and transmitting downlink preemption indication information in a next generation / 5G wireless access network (hereinafter, also referred to as NR [New Radio]). In one embodiment, a terminal preempts downlink. A method of receiving indication information, the method comprising: receiving monitoring setting information for downlink preemption indication information from a base station, receiving configuration information for a control resource set (CORESET) for receiving downlink preemption indication information from a base station Step, based on the configuration information for the control resource set, comprising the steps of configuring a reference downlink resource (reference downlink resource) and monitoring the downlink preemption indication information for the reference downlink resource, the downlink preemption indication Information is a time period resource or a frequency period in which a preemption occurs within a reference downlink resource. Provides a method characterized in that it comprises a bit map indicating the information on the source.

Description

Methods and devices for monitoring and transmitting downlink preemption indication information in a next-generation wireless network and apparatus therefor

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

3GPP recently approved "Study on New Radio Access Technology", a study item for research on next-generation / 5G radio access technology. Based on this, RAN WG1 has frame structure, channel coding and modulation for NR (New Radio) respectively. , Waveform and multiple access methods are being discussed. NR is required to be designed to satisfy various demands required for each segmented and specific usage scenario as well as improved data rates in preparation for LTE / LTE-Advanced.

As representative use scenarios of NR, enhancement mobile BroadBand (eMBB), massive machine type communication (mMTC) and ultra reliable and low latency communications (URLLC) are proposed, and LTE / LTE-Advanced compared to meet the needs of each use scenario It is desired to design a flexible frame structure.

In particular, in NR, services such as eMBB and mMTC are more efficient in terms of cell throughput and coverage, and the longer the time interval resource allocation, the more efficient the URLLC is, the shorter the time interval resource allocation due to latency. Therefore, it is necessary to support efficient multiplexing of data traffic between services in a network in which the above-described eMBB, mMTC and URLLC services are mixed.

International application number PCT / US2015 / 051766 (2016.04.21 international publication, domestic entry 10-2017-0069224)

The purpose of the present embodiments is to provide a specific method for supporting efficient multiplexing of data traffic between services in a network in which services having different QoS requirements such as eMBB, mMTC, and URLLC services are mixed in the NR. To have.

In an embodiment devised to solve the above-described problem, in a method for a terminal to receive downlink preemption indication information, receiving monitoring setting information for downlink preemption indication information from a base station, downward from the base station Receiving configuration information for a control resource set (CORESET) for receiving link preemption indication information, configuring a reference downlink resource based on configuration information for the control resource set, and reference downlink And monitoring the downlink preemption indication information for the link resource, wherein the downlink preemption indication information includes a bitmap indicating information on the time interval resource or the frequency interval resource in which the preemption occurs within the reference downlink resource. It provides a method characterized by the.

In addition, according to an embodiment of the present invention, in a method in which a base station transmits downlink preemption indication information, configuring monitoring setting information for downlink preemption indication information, a set of control resources for transmitting downlink preemption indication information And transmitting configuration information for (CORESET) to the terminal, and transmitting downlink preemption indication information for the reference downlink resource to the terminal, wherein the downlink preemption indication information is preempted within the reference downlink resource. It provides a method characterized by including a bitmap indicating the information on the time interval resource or frequency interval resource.

In addition, one embodiment of the terminal for receiving the downlink preemption (preemption) indication information, the control resource for receiving the monitoring setting information for the downlink preemption indication information from the base station, and receiving the downlink preemption indication information from the base station A reference downlink resource is configured and a downlink preemption indication information for a reference downlink resource is monitored based on configuration information for a receiver and a control resource set receiving configuration information for a set (CORESET). However, the downlink preemption indication information provides a terminal characterized by including a bitmap indicating information on a time interval resource or a frequency interval resource where preemption occurs within a reference downlink resource.

In addition, an embodiment of the base station for transmitting downlink preemption (preemption) indication information, a control unit for configuring monitoring setting information for downlink preemption indication information, a control resource set (CORESET) for transmitting downlink preemption indication information ) For transmitting the configuration information for the terminal, and transmitting the downlink preemption indication information for the reference downlink resource to the terminal, the downlink preemption indication information is the time period in which the preemption occurs in the reference downlink resource It provides a base station characterized in that it comprises a bitmap indicating the information on the resource or frequency interval resources.

According to the present embodiments, a specific method for supporting efficient multiplexing of data traffic between services in a network in which services having different QoS requirements such as eMBB, mMTC, and URLLC services are mixed in the NR is provided. can do.

FIG. 1 is a diagram illustrating alignment of OFDM symbols when different subcarrier spacings are used according to the present embodiments.
FIG. 2 is a diagram illustrating resources when one preemption occurs between eMBB and URLLC in the downlink according to the present embodiments.
3 is a diagram illustrating resources when a plurality of preemptions occur between eMBB and URLLC in a downlink according to the present embodiments.
FIG. 4 is a diagram illustrating a control resource set (CORESET) for transmitting preemption indication information in this embodiment and a preemption area corresponding to the control resource set.
5 is a diagram illustrating a procedure in which a terminal receives downlink preemption indication information in this embodiment.
6 is a diagram illustrating a procedure in which a base station transmits downlink preemption indication information in this embodiment.
7 is a diagram showing the configuration of a base station according to the present embodiments.
8 is a diagram showing the configuration of a user terminal according to the present embodiments.

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. It should be noted that in adding reference numerals to the components of each drawing, the same components have the same reference numerals as possible even though they are displayed on different drawings. In addition, in describing the present invention, when it is determined that detailed descriptions of related well-known configurations or functions may obscure the subject matter of the present invention, detailed descriptions thereof will be omitted.

In the present specification, a wireless communication system means a system for providing various communication services such as voice and packet data. The wireless communication system includes a user equipment (UE) and a base station (BS).

The user terminal is a comprehensive concept that refers to a terminal in wireless communication, user equipment (UE) in WCDMA, LTE, HSPA and IMT-2020 (5G or New Radio), as well as MS (Mobile Station) in GSM, UT It should be interpreted as a concept including (User Terminal), SS (Subscriber Station), and wireless device.

Base station or cell (Cell) generally refers to a station (station) to communicate with the user terminal, Node-B (Node-B), eNB (evolved Node-B), gNB (gNode-B), LPN (Low Power Node) ), Sector, Site, Antennas of various types, Base Transceiver System (BTS), Access Point, Point (e.g., transmit point, receive point, transmit / receive point), relay node ( Relay Node), mega cell, macro cell, micro cell, pico cell, femto cell, remote radio head (RRH), radio unit (RU), and small cell (small cell).

Since the various cells listed above have a base station that controls each cell, the base station can be interpreted in two ways. 1) a device that provides a mega cell, a macro cell, a micro cell, a pico cell, a femto cell, or a small cell in relation to the wireless area, or 2) the wireless area itself. In 1), all devices that provide a predetermined wireless area are controlled by the same entity or interact to configure the wireless area in a collaborative manner. Points, transmission / reception points, transmission points, reception points, and the like, according to a configuration method of a wireless area, are examples of a base station. In 2), the radio area itself, which receives or transmits a signal from the viewpoint of the user terminal or the neighboring base station, may indicate to the base station.

In this specification, a cell is a component carrier having a coverage of a signal transmitted from a transmission / reception point or a signal transmitted from a transmission / reception point, or a transmission / reception point itself. You can.

In this specification, the user terminal and the base station are two (Uplink or Downlink) transmitting and receiving subjects used to implement the technology or technical idea described in the present invention, and are used in a comprehensive sense and are not limited by terms or words specifically referred to. Does not.

Here, the uplink (Uplink, UL, or uplink) means a method of transmitting and receiving data to the base station by the user terminal, the downlink (Downlink, DL, or downlink) transmits and receives data to the user terminal by the base station Means the way.

For uplink transmission and downlink transmission, a time division duplex (TDD) method transmitted using different times may be used, and a frequency division duplex (FDD) method transmitted using different frequencies, a TDD method, and an FDD method Mixing methods can be used.

In addition, in a wireless communication system, an uplink and a downlink are configured based on one carrier or a pair of carriers to configure a standard.

Uplink and downlink transmit control information through control channels such as PDCCH (Physical Downlink Control CHannel), PUCCH (Physical Uplink Control CHannel), and PDSCH (Physical Downlink Shared CHannel), PUSCH (Physical Uplink Shared CHannel), etc. It consists of the same data channel and transmits data.

Downlink (downlink) may mean a communication or communication path from a multiple transmit and receive point to a terminal, and uplink (uplink) may mean a communication or communication path from a terminal to a multiple transmit and receive point. At this time, in the downlink, the transmitter may be a part of multiple transmission / reception points, and the receiver may be a part of the terminal. In addition, 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 signals are transmitted / received through channels such as PUCCH, PUSCH, PDCCH and PDSCH is also described in the form of 'transmit and receive PUCCH, PUSCH, PDCCH and PDSCH'.

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 terminals. The base station is a physical downlink for transmitting downlink control information such as scheduling required for reception of a downlink data channel, which is a main physical channel for unicast transmission, and scheduling grant information for transmission in an uplink data channel. The control channel can be transmitted. Hereinafter, the transmission and reception of signals through each channel will be described as a form in which the corresponding channel is transmitted and received.

There are no restrictions on the multiple access technique applied in a wireless communication system. Such as Time Division MultipleAccess (TDMA), Frequency Division MultipleAccess (FDMA), Code Division MultipleAccess (CDMA), Orthogonal Frequency Division MultipleAccess (OFDMA), Non-Orthogonal MultipleAccess (NOMA), OFDM-TDMA, OFDM-FDMA, OFDM-CDMA Various multiple access techniques can be used. Here, NOMA includes SCMA (Sparse Code MultipleAccess) and LDS (Low Density Spreading).

One embodiment of the present invention is to allocate resources such as asynchronous wireless communication evolving to LTE / LTE-Advanced, IMT-2020 via GSM, WCDMA, HSPA, and synchronous wireless communication fields evolving to CDMA, CDMA-2000 and UMB. Can be applied.

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

In other words, in this specification, the MTC terminal may mean a newly defined 3GPP Release-13 low cost (or low complexity) UE category / type that performs LTE-based MTC-related operations. Or, in this specification, the MTC terminal supports improved coverage compared to the existing LTE coverage, or UE category / type defined under the existing 3GPP Release-12 or lower supporting low power consumption, or the newly defined Release-13 low cost (or low complexity) UE category / type. Or, it may mean a furtherEnhancedMTC terminal defined in Release-14.

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

As a representative usage scenario in New Radio (NR), which is currently being discussed in 3GPP, enhanced Mobile BroadBand (eMBB), Massive Machine Type Communication (mMTC), and Ultra Reliable and Low Latency Communication (URLLC) have been proposed.

In this specification, frequency, frame, subframe, resource, resource block, region, band, subband, control channel, data channel, synchronization signal, various reference signals, various signals, various messages related to NR (New Radio) Can be interpreted as meaning used in the past or present or various meanings used in the future.

NR (New Radio)

3GPP recently approved "Study on New Radio Access Technology", a study item for research on next-generation / 5G radio access technology, based on which frame structure, channel coding and modulation for NR (New Radio), waveform and Discussion of multiple access schemes (frame structure, channel coding & modulation, waveform & multiple access scheme) has begun.

NR is required to be designed to satisfy various requirements required for each segmented and specific usage scenario, as well as an improved data rate compared to LTE / LTE-Advanced. In particular, as a representative usage scenario of NR, enhancement mobile BroadBand (eMBB), massive MTC (mMTC), and Ultra Reliable and Low Latency Communications (URLLC) have been raised, and requirements for each usage scenario are presented. As a method for satisfying the need for a flexible frame structure design compared to LTE / LTE-Advanced.

Specifically, eMBB, mMTC, and URLLC are considered as representative usage scenarios of NR under discussion in 3GPP. Since each usage scenario has different requirements for data rates, latency, and coverage, each usage scenario is used through a frequency band constituting an arbitrary NR system. Efficient multiplexing of radio resource units based on different numerology (eg subcarrier spacing, subframe, TTI, etc.) as a method to efficiently satisfy the requirements for each scenario There is a need for a way to (multiplexing).

As a method for this, a method of multiplexing and supporting TDM, FDM or TDM / FDM based on one NR carrier for a numerology having different subcarrier spacing (SCS) values is supported. And a method for supporting one or more time units in configuring a scheduling unit in a time domain. In this regard, in NR, a subframe is defined as a kind of time domain structure, and reference numerology for defining a corresponding subframe duration. As, it was decided to define a single subframe duration composed of 14 OFDM symbols of normal CP overhead based on the same 15kHz Sub-Carrier Spacing (SCS) as LTE. Accordingly, in NR, a subframe has a duration of 1 ms. However, unlike LTE, a subframe of NR is an absolute reference time duration, which is the basis of actual uplink / downlink data scheduling. Slots and mini-slots may be defined as time units. In this case, the number of OFDM symbols constituting the slot and the y value were determined to have a value of y = 14 regardless of the neuromerology.

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

In addition, a mini-slot consisting of fewer symbols than the corresponding slot is defined in any numerology (or SCS), and based on this, a short-length time domain scheduling interval for transmitting / receiving uplink / downlink data (time-domain) The scheduling interval may be set, or a long-time time-domain scheduling interval for transmitting / receiving uplink / downlink data through slot aggregation may be configured.

In particular, in case of transmitting / receiving for latency critical data such as URLLC, a slot based on 0.5ms (7 symbols) or 1ms (14 symbols) defined in a numerology based frame structure having a small SCS value such as 15 kHz. When scheduling is performed in units, it may be difficult to satisfy the latency requirement, so for this, a mini-slot consisting of fewer OFDM symbols than the corresponding slot is defined and based on the URLLC. It can be defined such that scheduling is performed for delay critical data.

Alternatively, as described above, by supporting multiplexed neuromerrollers having different SCS values in a single NR carrier by using a TDM method or an FDM method, based on the defined slot (or mini-slot) length for each newerroller. A method of scheduling data according to a latency requirement is also considered. For example, when the SCS is 60 kHz as shown in FIG. 1, the length of the symbol is reduced by about 1/4 compared to the case of the SCS 15 kHz. Therefore, when one slot is composed of 7 OFDM symbols, the corresponding 15 kHz-based slot length is While being 0.5ms, the slot length based on 60kHz is reduced to about 0.125ms.

As described above, in NR, a method for satisfying the requirements of URLLC and eMBB is defined by defining different SCS or different TTI lengths.

As described above, in NR, 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 particular, in order to satisfy URLLC requirements, it is necessary to subdivide the scheduling unit in the time domain. However, from the eMBB point of view, an excessively fine-grained time-domain scheduling unit is undesirable in terms of cell throughput because it involves excessive control overhead. Also, in terms of mMTC, a slightly longer time interval resource allocation structure may be more suitable for coverage enhancement.

In this embodiment, efficient multiplexing between data traffic for each service is supported in a network in which a service that requires long time resource allocation such as eMBB and mMTC and a service that requires short time resource allocation such as URLLC are mixed. An efficient downlink data channel resource allocation method is proposed.

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 a mobile communication terminal to which LTE technology is applied, but also to a next-generation mobile communication (5G mobile communication, New-RAT) terminal, a base station, and an access and mobility function (AMF). In the following description, for convenience of description, the base station may indicate an eNB of LTE / E-UTRAN, and a base station (CU, DU, or CU and DU) in a 5G wireless network in which a central unit (CU) and a distributed unit (DU) are separated. It may refer to an entity implemented as a logical entity), gNB.

In the use scenario of NR, URLLC means a service that supports high reliability and low latency, and although the size of data to be transmitted and received is not large, it is a service used when a serious problem occurs when a delay occurs in the process of data transmission and reception. For example, if the delay of data transmission / reception is large, such as an autonomous vehicle, the URLLC service may be used when human / physical 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 that supports ultra-high-speed data transmission. For example, when a large amount of data needs to be transmitted per unit time, such as 3D video or UHD service, an eMBB service may be used.

mMTC is a service used when the size of data 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 devices installed for the construction of a smart city, the mMTC service can be used because the battery must be operated for as long as possible.

In the general case, one of the three services described above, URLLC / eMBB / mMTC, is provided to the terminal according to the characteristics of the terminal. Hereinafter, a terminal using a URLLC service may be referred to as a URLLC terminal, a terminal using an eMBB service, an eMBB terminal, and a terminal using an mMTC service as an mMTC terminal. In addition, eMBB, mMTC, and URLLC may be interpreted as eMBB terminals, mMTC terminals, and URLLC terminals, respectively.

In addition, in this embodiment, preemption refers to re-allocating a portion of resources allocated to eMBB or mMTC to URLLC in order to satisfy latency requirements for URLLC when traffic to URLLC occurs. As in the to-do embodiment, it may also be expressed in terms of puncturing or superposition (however, the present invention is not limited by the name). When this preemption occurs, the downlink data transmission to the eMBB terminal is discontinuously discontinued in the middle for downlink data transmission to the URLLC terminal. Therefore, the occurrence of preemption in the present embodiment may be interpreted as a discontinuous transmission from the viewpoint of the eMBB terminal, and the occurrence of preemption is caused by the occurrence of discontinuous transmission. It is also possible to express.

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

In addition, since the downlink preemption indication information is information for instructing the UE which data channel is preempted in the downlink, the downlink preemption information is information that informs the UE of the downlink preemption, and thus may be expressed as downlink preemption notification information. have. The downlink preemption indication information may be indicated in the form of a signal or a channel.

Hereinafter, a more various embodiment of a method for a terminal and a base station to monitor and transmit downlink preemption indication information 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 (or TTI (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 a time domain, applying a slightly longer time interval resource allocation unit than a usage scenario of URLLC is a control overhead. It can be efficient in terms of (control overhead) and coverage.

As a method for satisfying various usage scenarios of NR at the same time, it is easy to define a short time interval resource allocation unit suitable for URLLC (eg, large subcarrierspacing of 60 kHz, 120 kHz, etc.) numerology) and a mixed numerology structure supporting a subcarrier spacing suitable for eMBB and mMTC (eg 15 kHz for eMBB or 3.75 kHZ for mMTC) through a single NR carrier. Or time domain scheduling units having different lengths, such as subframes or slots or mini-slots within an NR carrier operating in any one numerology. domain scheduling unit) at the same time.

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

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

Therefore, when allocating downlink data transmission resources as a method for solving this, puncturing some radio resources among the downlink radio resources allocated for data transmission of any eMBB or mMTC to transmit and receive urgent URLLC data. To support eMBB / URLLC multiplexing based on dynamic puncturing (or superposition based on additional superposition of URLLC data transmission signals for some radio resources) Is becoming.

That is, an eMBB that is used for urgent URLLC data transmission by puncturing (or superpositioning) some of the eMBB (or mMTC) downlink resources that are already on-going due to resource allocation. / We are considering a way to support dynamic resource sharing between URLLCs.

That is, when the base station / network arrives with more delay-critical downlink data than on-going PDSCH transmission in which resource allocation is performed in a random slot or a plurality of aggregated slots units. Then, by performing pre-emption for the delay-critical PDSCH transmission, puncturing some resources among currently on-going PDSCH transmission resources, the corresponding delay-criticality (latency) Considering a method for allocating for critical PDSCH transmission.

In addition, when dynamic resource sharing scheme based on dynamic puncturing (or superposition) between eMBB / URLLC is applied to the downlink of NR, puncturing for URLLC data transmission is applied. It is considering a method of indicating the radio resource to the eMBB terminal through explicit signaling.

At this time, as an indication method based on the explicit signaling, the puncturing is performed in a TTI (or slot, mini-slot, or 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 whether or not puncturing is performed through a subsequent TTI after the corresponding TTI are considered.

In this embodiment, a method for allocating a downlink radio resource to efficiently support dynamic resource sharing between eMBB / URLLC is proposed.

However, in the present embodiment, it is described based on a usage scenario such as eMBB or URLLC. However, in view of radio resource allocation and transmission / reception of downlink data accordingly, the eMBB is a long tool in a slot or merged slot unit. The inter-resource allocation unit may correspond to a defined terminal or data session, and in the case of URLLC, short-time resource allocation, such as a mini-slot or symbol or a slot unit based on a large SCS (ex. 60 kHz, 120 kHz) The unit may correspond to a defined terminal or data session.

Specifically, puncturing (or superposition) is performed in a mini-slot or symbol unit in a downlink data transmission resource allocated in an arbitrary slot unit or a plurality of slot units, or Partial radio for on-going downlink transmission in which puncturing (or superposition) is performed only for some frequency resources (some PRBs) within a corresponding mini-slot or symbol. It can be countered by resource puncturing technology.

That is, a puncturing method for some resources in a resource allocated for transmission of a mini-slot-based or symbol-based or corresponding downlink data in a slot and an explicit signaling therefor It can be interpreted from the point of view.

Accordingly, in this embodiment, the eMBB terminal or the eMBB data corresponds to transmission of downlink data based on a scheduling unit in a slot unit or a long time interval unit in which puncturing can be performed among given downlink data transmission resources. In addition, the URLLC terminal or URLLC data corresponds to transmission of downlink data used by puncturing some of the downlink resources allocated for the corresponding eMBB terminal or eMBB data transmission.

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

In this embodiment, when a part of the PDSCH transmission resource of the first terminal is punctured for PDSCH transmission of the second terminal as shown in FIG. 2, for indicating the puncturing of the first terminal We propose a method of configuring control information and a method of allocating radio resources for transmitting and receiving the same.

In addition, in this embodiment, for convenience of description, for delay-critical (latency critical) PDSCH transmission (that is, for URLLC PDSCH transmission), an on-going PDSCH transmission resource for any (eMBB) terminal When puncturing is performed, the present invention is not limited by the corresponding name to refer to a signal of a base station for instructing the corresponding (eMBB) terminal as a dynamic puncturing indication signal. That is, the corresponding signal is referred to as a dynamic puncturing indication signal, a puncturing indication signal, a superposition indication signal, or a pre-emption indication signal, or All cases referred to in other forms may be included in the scope of this embodiment.

Puncturing  Definition of DCI format for puncturingindication / pre-emptionindication for indication / preemption indication

For puncturing indication / preemption indication, DCI format (eg DL assignment DCI format) used to transmit scheduling control information for resource allocation used for PDSCH / PUSCH transmission and reception Apart from the UL grant DCI format, puncturing indication / preemption indication DCI format (however, the present invention is not limited by the name) may be defined.

Referring to the case of FIG. 2 as an example of the DCI format of puncturing indication / preemption indication, puncturing indication / preemption indication, puncturing for the second PDSCH transmission for the second terminal among the first PDSCH transmission resources allocated to the first terminal This is a DCI format for instructing the first terminal about the content of the puncturing (or superposition) radio resource. The specific embodiment proposed in the present invention to configure the DCI format is the following embodiment.

Example 1

First, puncturing indication / preemption indication information may be defined to be UE-specific signaled. And when dynamic resource sharing between any of the first terminal and the second terminal is applied, up to one mini-slot level (or continuous) for one PDSCH transmission transmitted in a slot unit or a plurality of slot units Symbol level) can be defined to allow only puncturing.

That is, as shown in FIG. 2, it can be defined to allow only puncturing by at least one second PDSCH transmission in the first PDSCH region. In this case, the DCI format for the corresponding puncturing indication / preemption indication is a mini-slot index or a symbol index (indicating a puncturing time period resource). symbol index) or an index of a start symbol and the number of symbols constituting a time period resource (starting symbol index + symbol duration).

At this time, the length of the mini-slot (that is, the number of symbols constituting the mini-slot) and the mini-slot boundary and the number constituting one DL (centric) slot, which are a unit of puncturing. I) is set through UE-specific / cell-specific higher layer signaling for each UE, or ii) puncturing indication / puncturing indication / It may be dynamically set through a preemption indication) signal, or iii) implicitly determined by a transmission subcarrier spacing (SCS) value set in a corresponding terminal / cell / slot.

The puncturing indication / preemption indication information may include indication information for a punctured physical resource block (punctured PRB (s)) in a punctured mini-slot. At this time, the information indicating the punctured physical resource block (punctured PRB (s)) is i) an assigned PRB or a PRB group composed of a plurality of localized or distributed PRB (s) Signaled in a manner indicated by a bitmap of a unit or ii) included in the corresponding second PDSCH scheduling control information (ie, a DL assignment DCI format for a second PDSCH for a second terminal) It can be defined to reuse PRB allocation information.

The puncturing indication / preemption indication information is a transmission / preemption / puncturing type (however, the present invention is based on a name for transmission / pre-emption / puncturing type). It can be defined to include. The transmission / preemption / puncturing type (transmission / pre-emption / puncturing type) is a transmission of a second PDSCH in a corresponding radio resource based on puncturing or superposition of the first PDSCH or transmitted. It may be defined as an information area indicating whether or not.

Additionally, the puncturing indication / preemption indication information may include retransmission of the first PDSCH or the entire first PDSCH corresponding to the punctured or overlapped radio resource area and HARQ of the first terminal. Reconfiguration information of PUCCH for ACK / NACK feedback may be included.

Example 2

It is possible to define that puncturing indication / preemption indication information is signaled in a UE-specific manner. And it is defined to allow puncturing for PDSCH transmission for a plurality of UEs or puncturing for a plurality of PDSCH transmissions within a first PDSCH transmission for any first terminal in which PDSCH resource allocation is performed in a slot unit or a plurality of slot units. can do. That is, as illustrated in FIG. 3, puncturing for transmission of a plurality of PDSCHs such as second PDSCH, third PDSCH, and fourth PDSCH in the first PDSCH region is performed by the base station / network / cell. Can be defined to allow.

In this case, the puncturing indication / preemption indication information is a separate puncturing indication / preemption indication for each 2nd PDSCH, 3rd PDSCH, 4th PDSCH, ... ) It can be defined to be individually signaled through 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, and if puncturing (puncturing) by a plurality of PDSCH is made, each of the number of separate puncturing indication / preemption indication (puncturing indication / preemption indication) DCI is configured to be defined to be transmitted to the corresponding first terminal You can.

If a plurality of puncturing (puncturing) is supported, as another method for the corresponding puncturing indication / preemption indication (puncturing indication / preemption indication), one puncturing indication / preemption indication (puncturing indication / preemption indication) DCI format Through this, it can be defined to simultaneously indicate puncturing by a plurality of PDSCHs. In this case, the puncturing indication / preemption indication DCI format determines the number of puncturing mini-slots or the number of puncturing-transmitted PDSCHs in the corresponding PDSCH TTI. It may be possible to include the information area indicating.

That is, since puncturing is performed on three mini-slots or three PDSCH transmissions in the first PDSCH transmission TTI in FIG. 3, an information area for indicating this is corresponding to the corresponding puncturing indication / preemption indication (puncturing indication) / preemption indication) Can be defined in DCI format.

Or, after configuring a bitmap in a mini-slot unit (or symbol unit or symbol group unit) constituting the corresponding PDSCH transmission TTI, bit is determined whether puncturing occurs in each mini-slot (or symbol or symbol group). It can be defined to indicate in a map manner.

Alternatively, the aggregation level of the puncturing indication / preemption indication DCI format, that is, the puncturing indication / preemption indication of the radio resource used for DCI format transmission A function composed of factors such as the amount, the number of control channel elements (CCEs), or a puncturing indication / preemption indication (DCI) transmitted search space (SS). It may be defined to implicitly indicate the number of puncturing mini-slots or the number of puncturing-transmitted PDSCHs.

In addition, PRB allocation information in a corresponding mini-slot, transmission / pre-emption / puncturing type, PUCCH reconfiguration information for retransmission and HARQ ACK / NACK feedback of the first terminal Etc. may be transmitted in the same form as in the first embodiment described above.

However, in the above-described first and second embodiments, the RNTI value of the UE for monitoring the puncturing indication / preemption indication DCI is used to monitor the scheduling DCI format of the UE. A separate UE-specific RNTI for monitoring DCI indicating the same as the allocated UE-specific RNTI value or indicating puncturing is performed by high layer signaling (high layer signaling). Can be assigned through

Third embodiment

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

Specifically, in the cell / slot / multi-slot (cell / slot / multiple-slot) unit, the PDSCH transmission resource allocation information of URLLC that affects the PDSCH of the eMBB is UE-group common (or group- It can be defined to be transmitted through control signaling of a common (group-common). That is, the puncturing indication / preemption indication DCI format is transmitted to a slot-specific or a UE-group specifically, and affects the PDSCH of the eMBB in the slot Can include information indicating the PDSCH transmission resource of URLLC (that is, transmitted by puncturing the eMBB PDSCH resource).

To this end, a separate UE-group specific RNTI or cell-specific / slot-specific (slot-) for monitoring the corresponding puncturing indication / preemption indication information specific) RNTI can be defined. The aforementioned RNTI provides higher layer signaling specific to UE-specific / cell-specific / terminal-group (UE-group) for each UE-group. It can be allocated or defined implicitly as a function of slot index or cell ID.

The method for configuring the specific information area of the puncturing indication DCI format specified in the cell-specific or TTI / slot / multiple-slot is as described above. The form of the first embodiment or the second embodiment may be followed.

That is, a DCI of UE-group common is configured for puncturing indication / preemption indication, and the corresponding DCI is UE-group common by a base station / network ) Considering the case of being transmitted through the PDCCH, the puncturing indication / preemption indication indicates the puncturing / preemption radio resource indication information transmitted through the DCI. It may be composed of time interval resource indication information or frequency interval resource indication information. In addition, the time period resource indication information and the frequency resource section indication information may follow the contents described through the above-described first or second embodiment.

As a specific example of this, a preemption window and a preemption interval (however, by name) to configure information indicating a time period resource in which puncturing or preemption is made Invention is not limited).

Preemption window (Preemption window) is the above-mentioned puncturing indication / preemption indication (puncturing indication / preemption indication) DCI transmission cycle or puncturing indication / preemption indication (puncturing indication / preemption indication) control resource set for DCI transmission (CORESET, Control Resource set).

For example, as shown in FIG. 2 or 3, puncturing / preemption indication to indicate whether puncturing / preemption is performed with a TTI of a first terminal having a long time interval scheduling unit as a period. indication / preemption indication) Consider a case in which DCI is transmitted and a control resource set (CORESET) for this is defined. At this time, the TTI of the corresponding first terminal may be defined as a preemption window.

Alternatively, when a signal indicating a preemption is transmitted in units of a plurality of first PDSCH TTIs, a corresponding plurality of first PDSCH TTIs are transmitted according to a transmission / reception cycle of a corresponding puncturing indication / preemption indication DCI. A preemption window can be defined.

The preemption interval allocates resources of a second PDSCH, a third PDSCH, or a fourth PDSCH that performs preemption-based PDSCH transmission and reception by puncturing some of the aforementioned first PDSCH transmission resources. It can be determined by the time interval scheduling unit used for.

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

Or, the base station / network signaling the information for setting the period of the control resource set (CORESET) for monitoring the DCI of the puncturing indication / preemption indication for any terminal (eg, the first terminal) of the upper layer signaling It may be defined to transmit to a terminal through (higher layer signaling) and to infer information about a preemption window of the corresponding terminal based on this.

In addition, the setting information for the preemption interval (preemption interval), as described through the first embodiment described above, i) is set through higher layer signaling (higher layer signaling) from the base station / network, or ii) puncturing indication / preemption Directed (dynamic) through DCI (puncturing indication / preemption indication), or iii) puncturing indication / preemption indication PDSCH or a pre-emption-based resource allocation PDSCH (eg second part 2) It may be set implicitly by a subcarrier spacing (SCS) value used for transmission of the PDSCH, the third PDSCH, and the fourth PDSCH.

When the preemption interval, which is a time interval unit of preemption within the preemption window, is defined, the corresponding puncturing indication / preemption indication DCI is Embodiment 1 Alternatively, as described in Example 2, i) directly indicate an index for a preemption interval in which a preemption occurs in a preemption window, or ii) preemption based on a bitmap It can be defined to indicate a preemption interval in which preemption has occurred.

When direct indexing for a preemption interval is indicated, one UE-group common puncturing indication / preemption indication DCI is one preemption interval It can be defined to include only information indicating the preemption for). If preemption occurs in a plurality of preemption intervals in a preemption window, separate UE-group common puncturing instructions for each preemption interval / It may be defined to configure and transmit a DCI (puncturing indication / preemption indication).

In addition, when puncturing indication / preemption indication DCI is composed of bitmap-based preemption interval indication information, one puncturing indication / preemption indication ) Through DCI, a plurality of preemption intervals in which a preemption has occurred in a preemption window may be indicated.

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

UE-group common (UE-group common) puncturing indication / preemption indication (puncturing indication / preemption indication) as a method of configuring information indicating the frequency interval resource for the preemption (preemption) made through the DCI As described through one embodiment, information indicating a corresponding frequency section resource may be resource block (RB) or resource block group (RBG) -based bitmap indication information.

At this time, the puncturing indication / preemption indication (puncturing indication / preemption indication) the bandwidth part (bandwidth part), that is the target of the corresponding RBG or RB indication information puncturing (puncturing) or preemption (preemption) through the DCI A terminal that monitors preemption indication information through higher layer signaling by setting a UE-group common bandwidth part for (preemption) by a base station / network. It can be defined to be sent to. And the puncturing indication / preemption indication (puncturing indication / preemption indication) RB or RBG indication information transmitted through the DCI as the indication information for the RB or RBG constituting the bandwidth part (bandwidth part) for preemption (preemption) It can be defined to be set by the base station and interpreted by the terminal.

Alternatively, a plurality of bandwidth parts for preemption are set by the base station, and preemption is performed through the frequency section resource indication information of the corresponding puncturing indication / preemption indication DCI. It may be configured to transmit the indication information for the generated bandwidth part (bandwidth part) and RB or RBG indication information in the corresponding bandwidth part (bandwidth part).

In this case, a subcarrier spacing (SCS) value for defining an RB grid constituting a bandwidth part for preemption is set by i) base station / network, and higher layer signaling Transmitted through, or ii) puncturing indication / preemption indication dynamically indicated through DCI or iii) corresponding puncturing indication / preemption indication DCI or preemption ( It is defined to be set to be explicitly or implicitly by a subcarrier spacing (SCS) value for transmission of a preemption-based resource allocation PDSCH (eg, 2nd PDSCH, 3rd PDSCH, 4th PDSCH). You can.

 Alternatively, instead of configuring a separate bandwidth part for preemption, a puncturing indication / preemption indication DCI configures the entire band of the corresponding NR component carrier (CC). Configures and transmits information indicating the RB or RBG where preemption has occurred for a frequency resource to be transmitted, and the UE configures a UE-common RB grid defined based on the entire NR component carrier (CC) band ( grid) can be defined to interpret the RB or RBG indication information.

In this case, the sub-carrier spacing (SCS) value defining the corresponding UE-common RB grid is also set by i) in the corresponding base station / network and transmitted through higher layer signaling or ii ) Punctured indication / preemption indication Dynamically indicated through DCI or iii) Punctured indication / preemption indication DCI or preemption-based resource allocation is made. It may be defined to be set to be explicit or implicit by subcarrier spacing (SCS) values for transmission of PDSCH (eg, 2nd PDSCH, 3rd PDSCH, 4th PDSCH).

In addition, when information indicating a frequency interval resource is configured in units of RBG, the size of the corresponding RBG is set by i) higher layer signaling from a base station / network or ii) puncturing indication / puncturing indication / preemption indication) PDSCH (eg 2nd PDSCH, 3rd PDSCH) that is dynamically indicated through DCI or iii) puncturing indication / preemption indication DCI or preemption-based resource allocation , May be defined implicitly by a bandwidth of a bandwidth part for preemption or a subcarrier spacing (SCS) value for transmission of a fourth PDSCH) or a bandwidth of an NR component carrier (CC) have.

4th embodiment: UE capability (UE capability) definition

In defining UE capability for any NR terminal, especially in defining downlink data reception capability of a corresponding terminal, time critical within an NR PDSCH resource allocated for the corresponding terminal It is possible to define whether to support puncturing-based (or superposition-based) dynamic resource sharing for downlink data transmission of another terminal.

Or when puncturing (or puncturing) some of the radio resources that are PDSCH transmission for any UE for time critical (time critical) PDSCH transmission in the NR cell / base station (or overlap with some of the radio resources ( On the basis of the superposition), a corresponding time critical PDSCH transmission signal may be additionally considered. At this time, whether or not support for explicit puncturing indication signaling that informs the corresponding UE or time based on the explicit puncturing indication information is critical. -Demodulation and decoding based on PDSCH reception except for pre-empted resources for data transmission, and fast recovery capability based on this. Can be defined.

5th embodiment: Dynamic puncturing mode configuration

Method 1. Explicit signaling based configuration method

When any NR base station / cell / TRP allocates downlink data channel resources for any UE in a corresponding cell, some resources (mini-slot units) within a TTI defined (or set) for the UE. Or, set whether dynamic puncturing support for a symbol unit, or some time-frequency resource unit) is set, and this is UE-specific or UE-group specific to the corresponding UE. Or, it may be transmitted through cell-specific higher layer signaling.

In this way, dynamic puncturing for PDSCH transmission through UE-specific / cell-specific / terminal-group specific higher layer signaling ) If support is set, the UE according to an explicit signaling method for instructing dynamic puncturing, a downlink control channel in a TTI in which the corresponding PDSCH reception is being performed or in a subsequent TTI Through this, control information indicating dynamic puncturing of a corresponding PDSCH transmission resource may be monitored.

As another method, when any NR base station / cell / transmission / reception point (TRP) allocates a downlink data channel resource for any UE in a cell, some resources (mini) within a TTI defined (or set) for the UE -Whether dynamic puncturing is supported for a slot (mini-slot unit or symbol unit, or some time-frequency resource) is set to be transmitted to the corresponding terminal through L1 / L2 control signaling. You can.

That is, when transmitting downlink data scheduling control information for any UE, that is, DL assignment (DL assignment) downlink control information (DCI) through an NR PDCCH that is an L1 control channel, resource allocation for a corresponding PDSCH Information and configuration information on whether dynamic puncturing is supported for URLLC terminal data transmission during on-going transmission for the corresponding PDSCH may be defined to be included in the DCI.

When dynamic puncturing support is configured for each PDSCH transmission through DL assignment DCI, the UE explicitly signals to indicate dynamic puncturing. Depending on the method, monitoring may be performed to receive control information instructing dynamic puncturing of a corresponding PDSCH transmission resource within a TTI in which the corresponding PDSCH reception is being performed or through a downlink control channel of a subsequent TTI. have.

As another method, as a combination of the above-described higher layer signaling (higher layer signaling) and L1 / L2 control signaling, whether to support dynamic puncturing may be set. That is, any NR base station / cell / transmission / reception point (TRP) supports UE-specific / cell-specific / terminal whether dynamic puncturing is supported for UEs in a corresponding cell. -It is primarily configured through UE-group specific higher layer signaling.

If dynamic puncturing mode support is set for an arbitrary UE through higher layer signaling, the NR base station / cell / transmission / reception point (TRP) is a PDSCH transmission resource for the corresponding UE. When allocating, it is possible to transmit additional information including configuration information for dynamic puncturing within a PDSCH transmission / reception TTI allocated through a corresponding DL assignment DCI.

That is, any terminal in which dynamic puncturing mode is set through higher layer signaling is assigned to a downlink allocation including dynamic puncturing support configuration information in the corresponding PDSCH reception TTI. (DL assignment) Defines to perform monitoring for DCI format, and dynamic puncturing for the corresponding PDSCH occurs according to the information on the dynamic puncturing support setting in the corresponding DL assignment DCI format. It can be defined to determine whether it is possible.

As described above, UE-specific / cell-specific / terminal-group specific UE layer specific and higher layer signaling and DL assignment DCI are applicable. When dynamic puncturing support for PDSCH transmission is set, the corresponding terminal receives TPD in which the corresponding PDSCH reception is made according to an explicit signaling method for instructing dynamic puncturing. Control information indicating dynamic puncturing for a corresponding PDSCH transmission resource may be monitored within or through a downlink control channel of a subsequent TTI.

In addition to the above-mentioned methods for setting the dynamic puncturing mode, the setting of the dynamic puncturing mode through this is specified in the TTI or through the subsequent TTI to indicate the corresponding dynamic puncturing mode. It may be interpreted as setting whether to monitor for explicit signaling.

That is, as described above i) UE-specific (UE-specific) / cell-specific (cell-specific) / terminal-group specific (UE-group specific) through the higher layer signaling (higher layer signaling) corresponding dynamic function Set whether to monitor for a dynamic puncturingindicationsignal or pre-emption indication signal, or ii) a corresponding dynamic puncturingindicationsignal or preemption indication signal through L1 control signaling Set whether to monitor for (pre-emption indication signal) or iii) UE-specific / cell-specific / terminal-group specific upper layer signaling (higher) Monitoring of the corresponding dynamic puncturing indication signal or pre-emption indication signal through a combination of layer signaling and L1 control signaling You can set the paper or not.

However, when monitoring for a dynamic puncturing indication signal or a pre-emption indication signal is set for an arbitrary UE through the above-described method, additionally, a corresponding pre-emption indication signal ) Can be set regarding the monitoring time (time).

As an example, a transmission time point or a pre-emption indication signal for a pre-emption indication signal for a PDSCH transmitted through a corresponding slot or aggregated slots for each slot or aggregate slots The upper layer signaling in which a transmission period, etc. for (pre-emption indication signal) is set by the base station and is UE-specific / cell-specific / terminal-group specific It may be set through (higher layer signaling) or may be set implicitly.

For example, a certain timing gap (eg K slots, K is an arbitrary integer) between a PDSCH transmission slot and a pre-emption indication signal through each slot or aggregated slots Can be defined.

Consider the case where the configuration information related to the transmission timing of the pre-emption indication signal such as the transmission timing or period of the pre-emption indication signal is set by the base station or implicitly defined. do. In this case, the terminal set to monitor the corresponding pre-emption indication signal is irrespective of the transmission point setting of the pre-emption indication signal for each slot or aggregated slots. Actually, a pre-emption indication signal corresponding to a slot or aggregated slots for which a PDSCH transmission has been made for a corresponding UE is transmitted or for a pre-emption indication signal defined at that time. It can be defined to perform monitoring for a corresponding pre-emption indication signal only for a control resource set (CORESET) or a search space.

That is, when a base station / network is set to monitor a signal for puncturing indication or preemption indication for any terminal, the corresponding puncturing indication or preemption indication High-level signaling that is UE-specific / cell-specific / terminal-group specific by setting a control resource set (CORESET) for monitoring on the base station / network It may be defined to transmit to the terminal through (higher layer signaling).

As a specific example of this, puncturing indication information or preemption indication information may be configured as a group-common DCI and transmitted to a terminal through a PDCCH. In this case, group-common (group common) preemption indication (control set) for monitoring DCI (CORESET), that is, group-common control resource set for preemption indication (group common CORESET for preemption indication) (however, this The embodiment is not limited by the name.) The setting information for) may be transmitted to each terminal through higher layer signaling by the base station / network.

At this time, the above-described group-common control resource set for preemption indication (group common CORESET for preemption indication) may be defined to have a one-to-one correspondence with the preemption region as shown in FIG. 4.

Referring to FIG. 4, in the case of group common CORESET for preemption indication # 1, pre-instruction may be transmitted to the UE every 3 slots, and each control resource set (CORESET) is controlled. It may correspond to a preemption region consisting of three slots immediately preceding the slot to which the resource set belongs.

On the other hand, in the case of group-common control resource set (group common CORESET for preemption indication) # 2 for preemption indication, it can be transmitted to the terminal every 1 slot period, and each control resource set (CORESET) belongs to the control resource set. It may correspond to a preemption region consisting of one slot immediately preceding the slot.

At this time, a group-common control resource set (group common CORESET for preemption indication) # 1 for preemption indication and a bandwidth part (BP) for preemption indication and group-common control resource set for preemption indication (group common CORESET for preemption indication) ) The bandwidth part BP of # 2 is included in the bandwidth of the component carrier CC of the NR, and may be different from each other.

Accordingly, a preemption indication DCI transmitted through a group common CORESET for preemption indication for preemption indication configured in an arbitrary slot DCI is puncturing within a corresponding preemption region ) Or preemption may be defined to indicate time / frequency radio resource information.

To this end, the setting information for the group-common control resource set (group common CORESET for preemption indication) for preemption indication is time / frequency resource allocation information in which the corresponding control resource set (CORESET) is configured in an arbitrary slot, that is, the control resource Time to configure a preemption region corresponding to a group common CORESET for preemption indication, as well as symbol allocation information and PRB allocation information in which the set (CORESET) is configured. / Can be defined to include the frequency section setting information.

For example, time period setting information for configuring a corresponding preemption region may be defined to be determined by period setting information of a group common CORESET for preemption indication.

That is, when the period of the group-common control resource set for preemption indication (group common CORESET for preemption indication) is set to K, the group-common control resource set for preemption indication (group common CORESET for preemption indication) is every K A preemption region configured in a slot unit and corresponding to a group common CORESET for preemption indication for a corresponding preemption indication configured in an arbitrary slot #n is a slot # ( nK) to # (n-1) may be defined to be configured through K slots, or slots # (n-K + 1) to #n may be defined to be configured through K slots.

That is, the terminal that receives the pre-emption indication information transmitted through the group-common control resource set configured in any slot #n is a set of symbols constituting the K slots preceding it, that is, configuring the corresponding group-common control resource set It can be defined that a preemption area for indicating the preemption is configured with a set of 14K symbols preceding the first symbol. At this time, the K value is UE-specific / cell-specific / terminal-group specific (UE-group specific) higher layer signaling (ex. RRC signaling). Can be directed to the terminal.

In addition, in order to set a frequency interval for configuring a preemption region, a group-common control resource set for indicating the preemption is set when a group common CORESET for preemption indication is set. It may be defined to include bandwidth part configuration information of a preemption region corresponding to a group common CORESET for preemption indication. For example, the bandwidth part setting information for setting the frequency section of the preemption region may be defined to be determined by the active bandwidth part of the terminal as a method similar to the time interval setting information.

In this way, the setting information for the group-common control resource set for preemption indication (group common CORESET for preemption indication) may include time / frequency resource setting information in which the corresponding control resource set (CORESET) is configured, and also implicit (implicit). ) Or preemption indication, which is transmitted through a group common CORESET for preemption indication for the corresponding preemption indication DCI is puncturing or preemption It can be defined to include configuration information for a preemption region in which the radio resource is indicated.

In addition, the group-common control resource set for preemption indication (group common CORESET for preemption indication) setting information may include RNTI setting information for preemption indication DCI monitoring in the corresponding control resource set (CORESET).

In addition, for a terminal set to monitor a preemption indication, a group-common control resource set (group common CORESET for preemption indication) for one or a plurality of preemption indications may be set, in which case the terminal is described above. Preemption area corresponding to each control resource set (CORESET) for one or more control resource sets (CORESET) configured according to the setting information for the group-common control resource set (group common CORESET for preemption indication) for preemption indication ( It may be defined to perform monitoring for a preemption indication DCI in a corresponding control resource set (CORESET) only when a PDSCH resource allocation in which all or part overlaps with a preemption region) is made.

That is, any terminal set to monitor preemption indication information receives the preemption indication DCI according to the setting information for the group common CORESET for preemption indication In order to monitor the corresponding control resource set (CORESET) in order to do so, even if the control resource set (CORESET) for preemption indication (preemption indication) is configured in an arbitrary slot, the preemption area corresponding to the corresponding control resource set (CORESET) If the (preemption region) and all or part of the overlapped (overlapping) PDSCH resource is not allocated or the corresponding PDSCH reception is not performed, the corresponding UE instructs preemption for the corresponding control resource set (CORESET) of the corresponding slot ( preemption indication) It may be defined not to perform monitoring to receive DCI.

In addition, in the above-described fourth and fifth embodiments, if any of the TTI lengths configured for a corresponding terminal for one or more terminals having a dynamic puncturing mode is set, dynamic puncturing is applied. The availability can be determined using a function of the TTI length with which any PDSCH allocation is made.

As an example of this, according to whether or not a dynamic puncturing mode is set for a UE or a PDSCH transmission / reception with a threshold value for a certain PDSCH transmission / reception TTI defined and a TTI exceeding the threshold value set. It can be defined to support dynamic puncturing. On the other hand, for UE or PDSCH transmission / reception with a TTI smaller than a threshold value, the dynamic puncturing mode is defined not to be set, or the dynamic puncture regardless of the setting of the dynamic puncturing mode. It can also be defined that dynamic puncturing is not supported.

At this time, the corresponding threshold (threshold) value may be set by the base station, or may have any fixed value. Also, the corresponding threshold value may be defined as an absolute time unit (eg X ms, but X is an arbitrary positive number) or may be defined as a symbol unit constituting a TTI for each subcarrier spacing (SCS). ( eg X OFDM symbol for 15 kHz SCS, Y OFDM symbol for 30 kHz SCS, etc.)

5 is a diagram illustrating a procedure in which a terminal receives downlink preemption indication information in this embodiment.

Referring to FIG. 5, the terminal may receive monitoring setting information for downlink preemption indication information from the base station (S500). At this time, the monitoring setting information may include information on whether to monitor for downlink preemption indication, which is UE-specific / cell-specific as described in the second embodiment. / UE-group specific (UE-group specific) may be indicated to the terminal through higher layer signaling (ex. RRC signaling).

That is, the monitoring configuration information may include information on whether to monitor or not monitor downlink preemption information used to indicate whether a downlink preemption has occurred. For example, in the case of the eMBB terminal, it is necessary to monitor downlink preemption indication information because the resource originally allocated to it may be preempted by the URLLC terminal. However, in the case of a URLLC terminal, it may not be necessary to monitor downlink preemption indication information because there is no possibility that a resource allocated to it is preempted by another terminal.

In addition, the terminal may receive configuration information for a control resource set (CORESET) for receiving downlink preemption indication information from the base station (S510).

In addition, the terminal may configure a reference downlink resource (reference downlink resource), based on the configuration information for the control resource set (CORESET) received in step S510 (S520).

Here, the reference downlink resource refers to a resource targeted for preemption, and refers to a resource represented by a preemption region in the above-described fifth embodiment.

At this time, as described above, a time interval of the reference downlink resource may be determined according to a period of monitoring a control resource set (CORESET) that may include information indicating preemption. As an example, as described in the fifth embodiment, when the time period of the reference downlink resource is K slots, the value of K will match the monitoring cycle for the set of control resources (CORESET) that may include information indicating preemption. You can. And, the frequency interval of the reference downlink resource may be determined by the activated bandwidth part of the terminal.

In addition, the terminal may monitor downlink preemption indication information for the reference downlink resource (S530).

At this time, the downlink preemption indication information may be indicated through a group-common DCI. Group-common (group-common) DCI can be transmitted to the terminal through a downlink control channel (PDCCH), which is a group-common control resource set for preemption indication described in the fifth embodiment (group common CORESET for preemption indication) ).

In addition, when the UE monitors a set of control resources (CORESET) that may include information indicating the preemption in order to receive the downlink preemption indication information, as described in the fifth embodiment, the UE performs a downlink data channel (PDSCH ), The downlink preemption indication information can be monitored only when all or part of the allocated time period and the reference downlink resource overlap.

That is, when the terminal does not have a downlink data channel (PDSCH) assigned to itself among resources within the reference downlink resource, there is no resource to be preempted, so there is no need to check whether the downlink is preempted. Therefore, in this case, the terminal may not perform monitoring for downlink preemption indication information.

In this case, the downlink preemption indication information may include a bitmap indicating information on a time interval resource or a frequency interval resource where preemption occurs within the reference downlink resource.

Here, the reference downlink resource means a resource targeted for preemption. That is, preemption may occur in some areas of the reference downlink resource, and the terminal may determine which part of the reference downlink resource corresponds to the pre-occupied area using the aforementioned bitmap.

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

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

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

In addition, the UE may receive information for setting a unit of a time period resource and a frequency resource in which the preemption occurs, which is information indicated in the downlink preemption indication information, from the base station through upper layer signaling. The unit of the time interval resource may be represented by the preemption interval described in the third embodiment, and the unit of the frequency interval resource may be expressed by one or more RB or RBG described above in the third embodiment.

For example, the terminal receives the information on which of the above-described M and N corresponds to M = 14, N = 1 or M = 7, N = 2 from the base station through higher layer signaling such as RRC, and the reference is down. A value obtained by dividing the entire time period resource of the link resource by M may be set as a unit of the time period resource, and a value obtained by dividing the total time period resource of the reference downlink resource by N may be set as a unit of the frequency resource. At this time, since the value that M and N can have is one of two, it can be expressed using a 1-bit indicator.

As another example, the UE signals the upper layer signaling such as RRC from the base station explicitly indicating how many symbols of the time interval resource are configured or how many RB (or RBG) is the frequency interval resource. You can also receive through.

At this time, the unit of the time period resource indicated by each bit of the bitmap and the unit of the frequency resource may be constant for all bits of the bitmap, and the index of the time period resource indicated by each bit (eg slot index) And may be implicitly determined by a function of an index (eg, RB index) of frequency resources.

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개의 심볼이고, 나머지

개의 비트가 지시하는 시구간 자원의 단위는

개의 심볼일 수 있다.For example, when M = 14 and N = 1, when all time period resources of the reference downlink resource are composed of T symbols, the first of the 14 bits constituting the bitmap

The unit of time interval resource indicated by the four bits is

Symbols, the rest

The unit of time interval resource indicated by the four bits is

It can be a number of 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.As another example, when M = 7 and N = 2, the entire time period resource of the reference downlink resource is composed of T symbols, the entire frequency period resource of the reference downlink resource is composed of B PRBs, and constitutes a bitmap. 14 bits can be configured as a pair of 7 bits. At this time, the first of the 7 pairs that make up the bitmap

The unit of time period resource indicated by the pair of bits is

Symbols, the rest

The unit of time period resource indicated by the pair of bits is

It can be a number of symbols. And the unit of the frequency interval resource indicated by the first bit in each pair described above is

Number of PRBs, and the unit of frequency interval resource indicated by the second bit is

May be PRBs of dogs.

6 is a diagram illustrating a procedure in which a base station transmits downlink preemption indication information in this embodiment.

Referring to FIG. 6, the base station may configure monitoring setting information for downlink preemption indication information (S600). At this time, the monitoring setting information may include information on whether to monitor for downlink preemption indication as described in FIG. 5, which is UE-specific / cell- as described in the fifth embodiment. It may be transmitted to the terminal through higher layer signaling (cell-specific) / terminal-group specific (UE-group specific).

In addition, the base station may transmit configuration information for a control resource set (CORESET) for transmitting downlink preemption indication information to the terminal (S610). At this time, downlink preemption indication information may be transmitted to the terminal through a group-common (group-common) DCI. Group-common (group-common) DCI may be transmitted to the terminal through a downlink control channel (PDCCH), which is a group-common control resource set for preemption indication described in the fifth embodiment (group common CORESET for preemption indication) ).

Accordingly, the terminal receiving the configuration information for the control resource set (CORESET) from the base station can check the downlink preemption indication information by monitoring the corresponding control resource set.

In addition, the base station may transmit downlink preemption indication information for the reference downlink resource to the terminal (S620).

Here, the reference downlink resource means a resource for which preemption is a target, and in the above-described second embodiment, means a region represented by a preemption region.

At this time, as described above, a time period of the reference downlink resource may be determined according to a monitoring cycle for a set of control resources (CORESET) that may include information indicating preemption. For example, as described in the fifth embodiment, when the time period of the reference downlink resource is K slots, the value of K will match the monitoring cycle for the set of control resources (CORESET) that may include information indicating preemption. You can. And, the frequency interval of the reference downlink resource may be determined by the activated bandwidth part of the terminal.

In this case, the downlink preemption indication information may include a bitmap indicating information on a time interval resource or a frequency interval resource where preemption occurs within the reference downlink resource.

Here, the reference downlink resource means a resource targeted for preemption. That is, preemption may occur in some areas of the reference downlink resource, and the base station may transmit to the UE the bitmap in which the preemption area corresponds to the reference downlink resource.

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

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

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

In addition, the base station may transmit information for setting a unit of a time period resource and a frequency resource, which are information indicated in the downlink preemption indication information, to the terminal through higher layer signaling. The unit of the time interval resource may be expressed by the preemption interval described in the third embodiment, and the unit of the frequency interval resource may be expressed by one or more RB or RBG described above in the third embodiment.

For example, the base station transmits information on which of the above-described M and N corresponds to M = 14, N = 1 or M = 7, N = 2 to the terminal through higher layer signaling such as RRC, and receives it One UE may set a value obtained by dividing the entire time period resource of the reference downlink resource by M as a unit of the time period resource, and a value obtained by dividing the total time period resource of the reference downlink resource by N as the frequency resource unit. .

As another example, the base station provides information indicating explicitly how many units of the time interval resource are configured or how many units of the frequency interval resource are composed of RBs (or RBGs) through higher layer signaling such as RRC. It can also be transmitted to the terminal.

7 is a diagram showing the configuration of a base station according to the present embodiments.

Referring to FIG. 7, the base station 700 includes a control unit 710, a transmitter 720, and a receiver 730.

The control unit 710 may configure monitoring setting information for downlink preemption indication information. At this time, as described above, the monitoring setting information may include information on whether to monitor downlink preemption indication information. And, this information is UE-specific / cell-specific / terminal-group specific (UE-group specific) higher layer signaling, as described in the second embodiment. It can be transmitted to the terminal through.

The transmitting unit 720 and the receiving unit 730 are used to transmit and receive signals, messages, and data necessary to perform the present invention.

Specifically, the transmitter 720 may transmit configuration information for a control resource set (CORESET) for transmitting downlink preemption indication information to the terminal, and transmit downlink preemption indication information for the reference downlink resource to the terminal.

At this time, downlink preemption indication information may be transmitted to the terminal through a group-common (group-common) DCI. Group-common (group-common) DCI may be transmitted to the terminal through a downlink control channel (PDCCH), which is a group-common control resource set for preemption indication described in the fifth embodiment (group common CORESET for preemption indication) ).

Accordingly, the terminal receiving the configuration information for the control resource set (CORESET) from the base station can check the downlink preemption indication information by monitoring the corresponding control resource set.

Here, the reference downlink resource means a resource for which preemption is a target, and means a region represented by a preemption region in the above-described fifth embodiment.

At this time, as described above, a time period of the reference downlink resource may be determined according to a monitoring cycle for a set of control resources (CORESET) that may include information indicating preemption. For example, as described in the fifth embodiment, when the time period of the reference downlink resource is K slots, the value of K will match the monitoring cycle for the set of control resources (CORESET) that may include information indicating preemption. You can. And, the frequency interval of the reference downlink resource may be determined by the activated bandwidth part of the terminal.

In this case, the downlink preemption indication information may include a bitmap indicating information on a time interval resource or a frequency interval resource where preemption occurs within the reference downlink resource.

Here, the reference downlink resource means a resource targeted for preemption. That is, preemption may occur in some areas of the reference downlink resource, and the base station may transmit to the UE the bitmap in which the preemption area corresponds to the reference downlink resource.

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

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

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

In addition, the base station may transmit information for setting a unit of a time period resource and a frequency resource, which are information indicated in the downlink preemption indication information, to the terminal through higher layer signaling. The unit of the time interval resource may be expressed by the preemption interval described in the third embodiment, and the unit of the frequency interval resource may be expressed by one or more RB or RBG described above in the third embodiment.

For example, the base station transmits information on which of the above-described M and N corresponds to M = 14, N = 1 or M = 7, N = 2 to the terminal through higher layer signaling such as RRC, and receives it One UE may set a value obtained by dividing the entire time period resource of the reference downlink resource by M as a unit of the time period resource, and a value obtained by dividing the total time period resource of the reference downlink resource by N as the frequency resource unit. .

As another example, the base station, through higher layer signaling such as RRC, indicates information explicitly indicating how many symbols of the time interval resource or how many units of the frequency interval resource are RB (or RBG). It can also be transmitted to the terminal.

8 is a diagram showing the configuration of a user terminal according to the present embodiments.

Referring to FIG. 8, the user terminal 800 includes a receiver 810, a controller 820, and a transmitter 830.

The receiving unit 810 receives downlink control information, data, and messages from a base station through a corresponding channel. Specifically, the receiving unit 810 may receive monitoring setting information for downlink preemption indication information from the base station, and receive configuration information for a control resource set (CORESET) for receiving downlink preemption indication information from the base station.

At this time, as described above, the monitoring setting information may include information on whether to monitor for downlink preemption indication, which is UE-specific / cell-specific (as described in the fifth embodiment). Cell-specific / terminal-group specific may be indicated to the terminal through higher layer signaling.

The control unit 820 may configure a reference downlink resource based on the configuration information for the aforementioned control resource set, and monitor downlink preemption indication information for the reference downlink resource.

Here, the reference downlink resource means a resource targeted for preemption, and means a resource represented by a preemption region in the above-described fifth embodiment. As described above, information indicating preemption may be included. A time interval of the reference downlink resource may be determined according to a cycle for monitoring the control resource set (CORESET). For example, as described in the fifth embodiment, when the time period of the reference downlink resource is K slots, the value of K will match the monitoring cycle for the set of control resources (CORESET) that may include information indicating preemption. You can. And, the frequency interval of the reference downlink resource may be determined by the activated bandwidth part of the terminal.

And, the downlink preemption indication information may be indicated through a group-common DCI. Group-common (group-common) DCI may be transmitted to the terminal through a downlink control channel (PDCCH), which is a group-common control resource set for preemption indication described above in the fifth embodiment (group common CORESET for preemption) indication).

In addition, when the UE monitors a control resource set (CORESET) that may include information indicating the preemption in order to receive the downlink preemption indication information, as described in the second embodiment, the UE performs a downlink data channel (PDSCH ), The downlink preemption indication information can be monitored only when all or part of the allocated time period and the reference downlink resource overlap.

That is, when the terminal does not have a downlink data channel (PDSCH) assigned to itself among resources within the reference downlink resource, there is no resource to be preempted, so there is no need to check whether the downlink is preempted. Therefore, in this case, the terminal may not perform monitoring for downlink preemption indication information.

The downlink preemption indication information may include a bitmap indicating information on a time interval resource or a frequency interval resource where preemption occurs within the reference downlink resource. Here, the reference downlink resource means a resource that is the target of preemption as described in FIG. 6.

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

In this case, (M * N) different resources may be determined by different M time interval resources and different N frequency interval resources, and each resource is assigned to a bit of a different bitmap to distinguish each resource. Should be mapped. Accordingly, two cases in which M = 14, N = 1, or M = 7, N = 2 can be set among pairs of natural numbers M * N satisfying (M * N) = 14.

In addition, the UE may receive information for setting a unit of a time period resource and a frequency resource in which the preemption occurs, which is information indicated in the downlink preemption indication information, from the base station through upper layer signaling. The unit of the time interval resource may be represented by the preemption interval described in the third embodiment, and the unit of the frequency interval resource may be expressed by one or more RB or RBG described above in the third embodiment.

For example, the terminal receives the information on which of the above-described M and N corresponds to M = 14, N = 1 or M = 7, N = 2 from the base station through higher layer signaling such as RRC, and the reference is down. A value obtained by dividing the entire time period resource of the link resource by M may be set as a unit of the time period resource, and a value obtained by dividing the total time period resource of the reference downlink resource by N may be set as a unit of the frequency resource.

As another example, the UE signals the upper layer signaling, such as RRC, from the base station to explicitly indicate how many symbols of the time interval resource are configured or how many RB (or RBG) units of the frequency interval resource are configured. You can also receive through.

The standard contents or standard documents mentioned in the above-described embodiments are omitted to simplify the description of the specification and constitute a part of the specification. Therefore, it should be construed that adding the contents of the above standard contents and a part of the standard documents to the present specification or in the claims falls within the scope of the present invention.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and variations without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain them, 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 interpreted by the claims below, and all technical spirits within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

Claims (32)

In the method for the terminal to receive the downlink preemption (preemption) indication information,
Receiving monitoring setting information for downlink preemption indication information from the base station;
Receiving configuration information for a control resource set (CORESET) for receiving downlink preemption indication information from the base station; And
And monitoring downlink preemption indication information indicating a downlink resource based on the configuration information for the control resource set,
The downlink preemption indication information,
And a bitmap indicating information on time-interval resources and frequency-interval resources in which the preemption occurs within the downlink resource,
In a downlink resource where preemption occurs, when all time period resources are composed of T symbols and all frequency resources are B PRBs, each bit of the bitmap of the downlink preemption indication information is among M time period resources. One is indicated, and one of the N frequency interval resources is indicated, but the time interval resource in units of the time interval resource divided by the total time interval resource by the M and the total frequency resource is divided by the N of the frequency interval resource Indicate the resource of the frequency section of the unit,
Configuration information for the control resource set,
And monitoring cycle information including a monitoring cycle K for the control resource set,
The time period of the downlink resource included in the downlink preemption indication information,
In the same frequency band in which the downlink preemption indication information is received, for the monitoring period K for the control resource set, it consists of 14K symbols immediately before the first symbol constituting the control resource set,
The frequency interval of the downlink resource included in the downlink preemption indication information,
A method consisting of blocks of physical resources that make up the active bandwidth part. According to claim 1,
The downlink preemption indication information,
Method characterized by being directed through a group-common DCI. According to claim 1,
The information for setting the unit of the time interval resource and the unit of the frequency interval resource,
Method for receiving from the base station through higher layer signaling. delete delete According to claim 1,
The bitmap,
Method comprising 14 bits. delete According to claim 1,
The M and N,
A method characterized in that M = 14, N = 1 or M = 7, N = 2. A method for a base station to transmit downlink preemption (preemption) indication information,
Configuring monitoring setting information for downlink preemption indication information;
Transmitting configuration information on a control resource set (CORESET) for transmitting the downlink preemption indication information to a terminal; And
It characterized in that it comprises the step of transmitting the downlink preemption indication information indicating the downlink resource configured on the basis of the configuration information for the control resource set to the terminal,
The downlink preemption indication information,
And a bitmap indicating information on time-interval resources and frequency-interval resources in which the preemption occurs within the downlink resource,
In a downlink resource where preemption occurs, when all time period resources are composed of T symbols and all frequency resources are B PRBs, each bit of the bitmap of the downlink preemption indication information is among M time period resources. One is indicated, and one of the N frequency interval resources is indicated, but the time interval resource of the unit of the time interval resource divided by the M and the total frequency resource divided by the N is the frequency interval resource Indicate the resource of the frequency section of the unit,
Configuration information for the control resource set,
And monitoring cycle information including a monitoring cycle K for the control resource set,
The time period of the downlink resource included in the downlink preemption indication information,
In the same frequency band in which the downlink preemption indication information is received, for the monitoring period K for the control resource set, it consists of 14K symbols immediately before the first symbol constituting the control resource set,
The frequency interval of the downlink resource included in the downlink preemption indication information,
A method consisting of blocks of physical resources that make up the active bandwidth part. The method of claim 9,
The downlink preemption indication information,
Method that is transmitted to the terminal through a group-common (group-common) DCI. The method of claim 9,
The information for setting the unit of the time interval resource and the unit of the frequency interval resource,
A method characterized in that it is transmitted to the terminal through higher layer signaling. delete delete The method of claim 9,
The bitmap,
Method comprising 14 bits. delete The method of claim 9,
The M and N,
A method characterized in that M = 14, N = 1 or M = 7, N = 2. In the terminal receiving the downlink preemption (preemption) indication information,
A receiver configured to receive monitoring setting information for downlink preemption indication information from a base station and receive configuration information for a control resource set (CORESET) for receiving downlink preemption indication information from the base station; And
A control unit configured to monitor downlink preemption indication information indicating a downlink resource, configured based on the configuration information for the control resource set, includes:
The downlink preemption indication information,
It includes a bitmap indicating information on the time interval resource and the frequency interval resource occupied in the downlink resource,
In a downlink resource where preemption occurs, when all time period resources are composed of T symbols and all frequency resources are B PRBs, each bit of the bitmap of the downlink preemption indication information is among M time period resources. One is indicated, and one of the N frequency interval resources is indicated, but the time interval resource in units of the time interval resource divided by the total time interval resource by the M and the total frequency resource is divided by the N of the frequency interval resource Indicate the resource of the frequency section of the unit,
Configuration information for the control resource set,
And monitoring cycle information including a monitoring cycle K for the control resource set,
The time period of the downlink resource included in the downlink preemption indication information,
In the same frequency band in which the downlink preemption indication information is received, for the monitoring period K for the control resource set, it consists of 14K symbols immediately before the first symbol constituting the control resource set,
The frequency interval of the downlink resource included in the downlink preemption indication information,
A terminal composed of a physical resource block constituting the activated bandwidth part. The method of claim 17,
The downlink preemption indication information,
A terminal characterized by being indicated through a group-common DCI. The method of claim 17,
The information for setting the unit of the time interval resource and the unit of the frequency interval resource,
A terminal characterized in that it is received from the base station through higher layer signaling. delete delete The method of claim 17,
The bitmap,
A terminal comprising 14 bits. delete The method of claim 17,
The M and N,
A terminal characterized in that M = 14, N = 1 or M = 7, N = 2. In the base station for transmitting the downlink preemption (preemption) indication information,
A control unit configuring monitoring setting information for downlink preemption indication information; And
Downlink preemption indication information indicating downlink resources configured to transmit configuration information for a control resource set (CORESET) for transmitting the downlink preemption indication information to a terminal and configured based on the configuration information for the control resource set It includes a transmitter for transmitting to the terminal,
The downlink preemption indication information,
It includes a bitmap indicating information on the time interval resource and the frequency interval resource occupied in the downlink resource,
In a downlink resource where preemption occurs, when all time period resources are composed of T symbols and all frequency resources are B PRBs, each bit of the bitmap of the downlink preemption indication information is among M time period resources. One is indicated, and one of the N frequency interval resources is indicated, but the time interval resource of the unit of the time interval resource divided by the M and the total frequency resource divided by the N is the frequency interval resource Indicate the resource of the frequency section of the unit,
Configuration information for the control resource set,
And monitoring cycle information including a monitoring cycle K for the control resource set,
The time period of the downlink resource included in the downlink preemption indication information,
In the same frequency band in which the downlink preemption indication information is received, for the monitoring period K for the control resource set, it consists of 14K symbols immediately before the first symbol constituting the control resource set,
The frequency interval of the downlink resource included in the downlink preemption indication information,
A base station consisting of physical resource blocks constituting the activated bandwidth part. The method of claim 25,
The downlink preemption indication information,
A base station characterized in that it is transmitted to the terminal through a group-common (group-common) DCI. The method of claim 25,
The information for setting the unit of the time interval resource and the unit of the frequency interval resource,
A base station characterized in that it is transmitted to the terminal through higher layer signaling. delete delete The method of claim 25,
The bitmap,
A base station comprising 14 bits. delete The method of claim 25,
The M and N,
A base station characterized in that M = 14, N = 1 or M = 7, N = 2.

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