WO2020060024A1 - Method and device for determining resource pool for sidelink communication in nr v2x - Google Patents

Abstract

Provided are a method for a first terminal to communicate in a wireless communication system, and a device supporting same. The method may include: a step for receiving, from a base station, information about a first resource pool and information about a second resource pool; a step for determining a resource pool for a sidelink from among the first resource pool and the second resource pool on the basis of a radio resource control (RRC) state of the first terminal and whether the first terminal is included in the coverage of the base station; and a step for transmitting, to a second terminal, information about the resource pool for the sidelink.

Description

Method and apparatus for determining resource pool for sidelink communication in NR V2X

The present specification relates to wireless communication, and more particularly, to a method for performing communication in a wireless communication system and a terminal using the same.

A wireless communication system is a multiple access system that supports communication with multiple users by sharing available system resources (eg, bandwidth, transmission power, etc.). Examples of the multiple access system include a code division multiple access (CDMA) system, a frequency division multiple access (FDMA) system, a time division multiple access (TDMA) system, an orthogonal frequency division multiple access (OFDMA) system, and a single carrier frequency (SC-FDMA). division multiple access (MC), multi-carrier frequency division multiple access (MC-FDMA) systems.

A sidelink refers to a communication method in which a direct link is established between user equipments (UEs) to directly transmit or receive voice or data between terminals without going through a base station (BS). The side link is considered as one method to solve the burden of the base station due to the rapidly increasing data traffic.

V2X (vehicle-to-everything) means a communication technology that exchanges information with other vehicles, pedestrians, and infrastructure-built objects through wired / wireless communication. V2X can be divided into four types: vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), vehicle-to-network (V2N), and vehicle-to-pedestrian (V2P). V2X communication may be provided through a PC5 interface and / or a Uu interface.

Meanwhile, as more communication devices require a larger communication capacity, a need for an improved mobile broadband communication has emerged compared to a conventional radio access technology (RAT). Accordingly, a communication system considering a service or terminal sensitive to reliability and latency is being discussed. Next-generation wireless considering improved mobile broadband communication, Massive MTC, and Ultra-Reliable and Low Latency Communication (URLLC). The access technology may be referred to as a new radio access technology (RAT) or a new radio (NR). In NR, vehicle-to-everything (V2X) communication may be supported.

An object of the present specification is to provide a method for performing communication in a wireless communication system having improved performance based on efficiently set resources, and a terminal using the same.

According to an embodiment of the present invention, a method for performing communication by a first terminal in a wireless communication system is provided. The method includes receiving information on a first resource pool and information on a second resource pool from a base station; Based on the radio resource control (RRC) state of the first terminal and whether or not the first terminal is included in the coverage of the base station, a resource pool for a side link among the first resource pool or the second resource pool is determined. To do; And transmitting information on the resource pool for the sidelink to a second terminal.

A first terminal for performing communication in a wireless communication system is provided. The first terminal may include one or more memories; One or more transceivers; And one or more processors connecting the one or more memories and the one or more transceivers, wherein the one or more processors include information about a first resource pool and information about a second resource pool. Control the transceiver to receive from the base station, based on the radio resource control (RRC) state of the first terminal and whether the first terminal is included in the coverage of the base station, the first resource pool or the second It may be configured to determine a resource pool for a sidelink among resource pools, and to control the transceiver to transmit information on the resource pool for the sidelink to a second terminal.

According to this embodiment, a method for performing communication in a wireless communication system with improved performance based on efficiently set resources and a terminal using the same may be provided.

1 shows the structure of an LTE system.

2 shows a radio protocol structure for the user plane.

3 shows a radio protocol structure for the control plane.

4 shows the structure of the NR system.

5 shows functional division between NG-RAN and 5GC.

6 shows the structure of a radio frame of NR.

7 shows the slot structure of the NR frame.

8 shows a terminal performing V2X or sidelink communication.

9 shows an example of a configuration of a resource unit.

10 shows a terminal operation according to a transmission mode related to sidelink / V2X communication.

11 illustrates the structure of a self-complete slot.

12 and 13 are diagrams showing an example of a resource pool based on a bitmap format according to an embodiment.

14 and 15 are diagrams showing an example of a resource pool based on a bitmap format according to another embodiment of the present invention.

16 illustrates a method for performing communication in a wireless communication system according to an embodiment of the present invention.

17 illustrates a method for a first terminal to perform communication according to this embodiment.

18 illustrates a communication system 1 applied to the present invention.

19 illustrates a wireless device that can be applied to the present invention.

20 illustrates a signal processing circuit for a transmission signal.

21 shows another example of a wireless device applied to the present invention.

22 illustrates a mobile device applied to the present invention.

23 illustrates a vehicle or an autonomous vehicle applied to the present invention.

24 illustrates a vehicle applied to the present invention.

25 illustrates an XR device applied to the present invention.

26 illustrates a robot applied to the present invention.

27 illustrates an AI device applied to the present invention.

In the following specification, "/" and?, "Should be interpreted to represent" and / or. "For example," A / B "may mean" A and / or B. "Furthermore," A, B "may mean" A and / or B. "Furthermore," A / B / C "may mean" at least one of A, B, and / or C. "Furthermore," A, B, C "may mean" at least one of A, B, and / or C ".

Furthermore, in the following specification, “or” should be construed to indicate “and / or”. For example, “A or B” can include “only A”, “only B”, and / or “both A and B”. In other words, “or” in the following specification should be interpreted to indicate “additionally or alternatively”.

The following technologies include code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA), orthogonal frequency division multiple access (OFDMA), and single carrier frequency division multiple access (SC-FDMA). It can be used in various wireless communication systems. CDMA may be implemented with a radio technology such as universal terrestrial radio access (UTRA) or CDMA2000. TDMA may be implemented with radio technologies such as global system for mobile communications (GSM) / general packet radio service (GPRS) / enhanced data rates for GSM evolution (EDGE). OFDMA can be implemented with wireless technologies such as the Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, and Evolved UTRA (E-UTRA). IEEE 802.16m is an evolution of IEEE 802.16e, and provides backward compatibility with a system based on IEEE 802.16e. UTRA is part of a universal mobile telecommunications system (UMTS). 3rd generation partnership project (3GPP) long term evolution (LTE) is part of evolved UMTS (E-UMTS) using evolved-UMTS terrestrial radio access (E-UTRA), employing OFDMA in the downlink and SC in the uplink -Adopt FDMA. LTE-A (advanced) is an evolution of 3GPP LTE.

5G NR is the successor to LTE-A, and is a new clean-slate type mobile communication system with characteristics such as high performance, low latency, and high availability. 5G NR can utilize all available spectrum resources, from low frequency bands below 1 GHz to mid-frequency bands from 1 GHz to 10 GHz, and high frequency (millimeter wave) bands above 24 GHz.

To clarify the description, LTE-A or 5G NR is mainly described, but the technical spirit of the present specification is not limited thereto.

1 shows the structure of an LTE system. This may be referred to as E-UTRAN (Evolved-UMTS Terrestrial Radio Access Network), or Long Term Evolution (LTE) / LTE-A system.

Referring to FIG. 1, the E-UTRAN includes a base station (BS) 20 that provides a control plane and a user plane to the terminal 10. The terminal 10 may be fixed or mobile, and may be referred to as other terms such as a mobile station (MS), a user terminal (UT), a subscriber station (SS), a mobile terminal (MT), and a wireless device. . The base station 20 refers to a fixed station that communicates with the terminal 10, and may be referred to as other terms such as an evolved-NodeB (eNB), a base transceiver system (BTS), and an access point.

The base stations 20 may be connected to each other through an X2 interface. The base station 20 is connected to an EPC (Evolved Packet Core 30) through an S1 interface, and more specifically, a mobility management entity (MME) through an S1-MME and a serving gateway (S-GW) through an S1-U.

EPC 30 is composed of MME, S-GW and P-GW (Packet Data Network-Gateway). The MME has access information of the terminal or information about the capability of the terminal, and this information is mainly used for mobility management of the terminal. S-GW is a gateway with E-UTRAN as an endpoint, and P-GW is a gateway with PDN as an endpoint.

The layers of the radio interface protocol between the terminal and the network are based on the lower three layers of the Open System Interconnection (OSI) reference model, which is widely known in communication systems, L1 (first layer), It can be divided into L2 (second layer) and L3 (third layer). Among them, the physical layer belonging to the first layer provides an information transfer service using a physical channel, and the radio resource control (RRC) layer located in the third layer is a radio resource between the terminal and the network. It plays a role of controlling. To this end, the RRC layer exchanges RRC messages between the terminal and the base station.

2 shows a radio protocol architecture for a user plane. 3 shows a radio protocol structure for a control plane. The user plane is a protocol stack for transmitting user data, and the control plane is a protocol stack for transmitting control signals.

2 and 3, a physical layer provides an information transmission service to an upper layer using a physical channel. The physical layer is connected to the upper layer of the MAC (Medium Access Control) layer through a transport channel. Data moves between the MAC layer and the physical layer through the transport channel. Transmission channels are classified according to how and with what characteristics data is transmitted through a wireless interface.

Data moves between different physical layers, that is, between the physical layers of the transmitter and the receiver through a physical channel. The physical channel can be modulated by an orthogonal frequency division multiplexing (OFDM) method, and utilizes time and frequency as radio resources.

The MAC layer provides a service to a higher level RLC (radio link control) layer through a logical channel. The MAC layer provides a mapping function from a plurality of logical channels to a plurality of transport channels. In addition, the MAC layer provides a logical channel multiplexing function by mapping from a plurality of logical channels to a single number of transport channels. The MAC sub-layer provides data transmission services on logical channels.

The RLC layer performs concatenation, segmentation and reassembly of RLC SDUs. In order to guarantee various quality of service (QoS) required by a radio bearer (RB), the RLC layer has a transparent mode (TM), an unacknowledged mode (UM), and an acknowledgment mode (Acknowledged Mode). , AM). AM RLC provides error correction through automatic repeat request (ARQ).

RRC (Radio Resource Control) layer is defined only in the control plane. The RRC layer is responsible for control of logical channels, transport channels, and physical channels in connection with configuration, re-configuration, and release of radio bearers. RB means a logical path provided by the first layer (PHY layer) and the second layer (MAC layer, RLC layer, PDCP layer) for data transmission between the terminal and the network.

The functions of the Packet Data Convergence Protocol (PDCP) layer in the user plane include the transfer of user data, header compression, and ciphering. The functions of the Packet Data Convergence Protocol (PDCP) layer in the control plane include transmission of control plane data and encryption / integrity protection.

The establishment of RB means a process of defining characteristics of a radio protocol layer and a channel to provide a specific service, and setting each specific parameter and operation method. The RB can be divided into two types: a signaling radio bearer (SRB) and a data radio bearer (DRB). SRB is used as a path for transmitting RRC messages in the control plane, and DRB is used as a path for transmitting user data in the user plane.

When an RRC connection is established between the RRC layer of the UE and the RRC layer of the E-UTRAN, the UE is in the RRC_CONNEDTED state, otherwise it is in the RRC_IDLE state. In the case of NR, the RRC_INACTIVE state is further defined, and the terminal in the RRC_INACTIVE state can release the connection with the base station while maintaining the connection with the core network.

Downlink transport channels for transmitting data from a network to a terminal include a broadcast channel (BCH) for transmitting system information and a downlink shared channel (SCH) for transmitting user traffic or control messages. Traffic or control messages of a downlink multicast or broadcast service may be transmitted through a downlink SCH or may be transmitted through a separate downlink multicast channel (MCH). Meanwhile, an uplink transmission channel for transmitting data from a terminal to a network includes a random access channel (RACH) for transmitting an initial control message and an uplink shared channel (SCH) for transmitting user traffic or a control message.

Logical channels that are located above the transport channel and are mapped to the transport channel include Broadcast Control Channel (BCCH), Paging Control Channel (PCCH), Common Control Channel (CCCH), Multicast Control Channel (MCCH), and Multicast Traffic (MTCH). Channel).

The physical channel is composed of several OFDM symbols in the time domain and several sub-carriers in the frequency domain. One sub-frame is composed of a plurality of OFDM symbols in the time domain. The resource block is a resource allocation unit, and is composed of a plurality of OFDM symbols and a plurality of sub-carriers. In addition, each subframe may use specific subcarriers of specific OFDM symbols (eg, the first OFDM symbol) of a corresponding subframe for a physical downlink control channel (PDCCH), that is, an L1 / L2 control channel. TTI (Transmission Time Interval) is a unit time of subframe transmission.

4 shows the structure of the NR system.

Referring to FIG. 4, the NG-RAN may include a gNB and / or eNB that provides a user plane and control plane protocol termination to a terminal. 4 illustrates a case in which only the gNB is included. The gNB and the eNB are connected to each other by an Xn interface. The gNB and the eNB are connected through a 5G Core Network (5GC) and an NG interface. More specifically, AMF (access and mobility management function) is connected through an NG-C interface, and UPF (user plane function) is connected through an NG-U interface.

5 shows functional division between NG-RAN and 5GC.

Referring to Figure 5, gNB is an inter-cell radio resource management (Inter Cell RRM), radio bearer management (RB control), connection mobility control (Connection Mobility Control), radio admission control (Radio Admission Control), measurement settings and provision It can provide functions such as (Measurement configuration & Provision), dynamic resource allocation, and the like. AMF can provide functions such as NAS security and idle state mobility processing. UPF may provide functions such as mobility anchoring and PDU processing. The Session Management Function (SMF) may provide functions such as terminal IP address allocation and PDU session control.

Meanwhile, a new RAT system such as NR may use an OFDM transmission scheme or a similar transmission scheme. The new RAT system may follow OFDM parameters different from those of LTE. Alternatively, the new RAT system may follow the existing LTE / LTE-A pneumatics, but may have a larger system bandwidth (eg, 100 MHz). Or, one cell may support a plurality of neurology. That is, terminals operating with different numerology can coexist in one cell.

6 shows the structure of a radio frame of NR.

Referring to FIG. 6, radio frames may be used for uplink and downlink transmission in NR. The radio frame has a length of 10 ms, and may be defined as two 5 ms half-frames (HFs). The half-frame may include 5 1ms subframes (Subframe, SF). The subframe may be divided into one or more slots, and the number of slots in the subframe may be determined according to subcarrier spacing (SCS). Each slot may include 12 or 14 OFDM (A) symbols according to a cyclic prefix (CP).

When a normal CP is used, each slot may include 14 symbols. When an extended CP is used, each slot may include 12 symbols. Here, the symbol may include an OFDM symbol (or CP-OFDM symbol) and an SC-FDMA symbol (or DFT-s-OFDM symbol).

Table 1 below shows that when a normal CP is used, the number of symbols per slot (N ^slot _symb ), the number of slots per ^frame (N ^{frame, u} _slot ) and the number of slots per subframe according to the SCS setting (u) ( N ^{subframe, u} _slot ).

SCS (15 * 2 u )	N slot symb	N frame, u slot	N subframe, u slot
15KHz (u = 0)	14	10	One
30KHz (u = 1)	14	20	2
60KHz (u = 2)	14	40	4
120KHz (u = 3)	14	80	8
240KHz (u = 4)	14	160	16

Table 2 below illustrates the number of symbols per slot, the number of slots per frame, and the number of slots per subframe according to the SCS when an extended CP is used.

SCS (15 * 2 u )	N slot symb	N frame, u slot	N subframe, u slot
60KHz (u = 2)	12	40	4

In the NR system, OFDM (A) numerology (eg, SCS, CP length, etc.) may be set differently among a plurality of cells merged into one UE. Accordingly, a (absolute time) section of a time resource (eg, subframe, slot, or TTI) composed of the same number of symbols (for convenience, collectively referred to as TU (Time Unit)) may be set differently between merged cells. .

7 shows the slot structure of the NR frame.

Referring to FIG. 7, a slot may include a plurality of symbols in the time domain.

For example, when a normal CP is applied, one slot may include 14 symbols. When the extended CP is applied, one slot may include 12 symbols.

As another example, when a normal CP is applied, one slot may include 7 symbols. When an extended CP is applied, one slot may include 6 symbols.

For example, the carrier wave may include a plurality of subcarriers in the frequency domain.

The resource block (hereinafter referred to as 'RB') of FIG. 7 may be defined as a set of a plurality of (eg, 12) consecutive subcarriers in the frequency domain.

In addition, the bandwidth part (Bandwidth Part, hereinafter 'BWP') of FIG. 7 may be defined as a set of a plurality of consecutive (P) RBs in the frequency domain. In this case, the BWP may correspond to one numerology (eg, SCS, CP length, etc.).

The carrier of FIG. 7 may include up to N (eg, 5) BWPs. For example, data communication can be performed through an activated BWP. Each element may be referred to as a resource element (RE) in the resource grid, and one complex symbol may be mapped.

8 shows a terminal performing V2X or sidelink communication.

For example, in the present specification, in the V2X / sidelink communication, the term terminal may mainly mean a user terminal. For example, when network equipment (eg, a base station) transmits and receives signals according to a communication method between terminals, the base station may also be regarded as a kind of terminal.

Referring to FIG. 8, for example, the terminal 1 may select a resource unit corresponding to a specific resource in a resource pool, which means a set of resources. In addition, the terminal 1 may operate to transmit a sidelink signal based on the selected resource unit.

For example, terminal 2, which is a receiving terminal, may be configured with a resource pool through which signals can be transmitted by terminal 1. Subsequently, the terminal 2 may operate to detect the signal of the terminal 1 in the set resource pool.

For example, if the terminal 1 is within the connection range of the base station, the base station may inform the terminal 2 of the resource pool. As another example, when the terminal 1 is outside the connection range of the base station, another terminal (not shown) may inform the resource pool of the terminal 2. Alternatively, the terminal 2 may determine a resource pool based on a predetermined resource.

In this specification, the resource pool may be composed of a plurality of resource units, and each terminal may select one or a plurality of resource units and use it for transmission of its own sidelink signal.

9 shows an example of a configuration of a resource unit.

Referring to FIG. 9, the total frequency resources of the resource pool may be divided into NF pieces, and the total time resources of the resource pool may be divided into NT pieces. Accordingly, a total of NF * NT resource units can be defined in the resource pool. 9 shows an example in which the corresponding resource pool is repeated in the cycle of NT subframes.

Referring to FIG. 9, one resource unit (eg, Unit # 0) may appear periodically and repeatedly. Alternatively, in order to obtain a diversity effect in a time or frequency dimension, an index of a physical resource unit to which one logical resource unit is mapped may change in a predetermined pattern according to time.

In the structure of such a resource unit, a resource pool may mean a set of resource units that can be used for transmission by a terminal to transmit a sidelink signal.

Resource pools can be subdivided into several types. For example, depending on the content of the sidelink signal transmitted from each resource pool, the resource pool may be classified as follows.

(1) Scheduling Assignment (Scheduling Assignment, SA) is the location of a resource used by a transmitting terminal for transmission of a sidelink data channel, a modulation and coding scheme (MCS) or MIMO transmission method required for demodulation of other data channels, TA It may be a signal including information such as (Timing Advance). The SA can be multiplexed and transmitted together with sidelink data on the same resource unit. In this case, the SA resource pool may mean a resource pool in which SA is multiplexed with sidelink data and transmitted. The SA may also be called a sidelink control channel.

(2) A sidelink data channel (Physical Sidelink Shared Channel, PSSCH) may be a resource pool used by a transmitting terminal to transmit user data. If SAs are multiplexed and transmitted together with sidelink data on the same resource unit, only the sidelink data channel of the type excluding SA information can be transmitted from the resource pool for the sidelink data channel. In other words, REs that were used to transmit SA information on individual resource units in the SA resource pool can still be used to transmit sidelink data in the resource pool of the sidelink data channel.

(3) The discovery channel may be a resource pool for a transmitting terminal to transmit information such as its own ID. Through this, the transmitting terminal can make the adjacent terminal discover itself.

Even when the contents of the sidelink signals described above are the same, different resource pools may be used according to the transmission / reception attributes of the sidelink signals. For example, even in the same sidelink data channel or discovery message, a transmission timing determination method of a sidelink signal (for example, whether it is transmitted at the time of reception of a synchronization reference signal or is applied by applying a certain timing advance at the time of reception) , Resource allocation method (e.g., whether a base station designates a transmission resource of an individual signal to an individual transmission terminal or whether an individual transmission terminal selects an individual signal transmission resource in its own resource pool), a signal format (for example, Depending on the number of symbols that each sidelink signal occupies in one subframe, or the number of subframes used for transmission of one sidelink signal), the signal strength from the base station, the transmit power strength of the sidelink terminal, and the like back to a different resource pool It may be divided.

10 illustrates a terminal operation according to a transmission mode (TM) related to sidelink / V2X communication.

10 (a) shows a terminal operation related to transmission mode 1 or transmission mode 3, and FIG. 10 (b) shows a terminal operation related to transmission mode 2 or transmission mode 4.

Referring to (a) of FIG. 10, in the transmission mode 1/3, the base station performs resource scheduling to UE 1 through PDCCH (more specifically, Downlink Control Information, hereinafter 'DCI'), and UE 1 performs the corresponding resource Sidelink / V2X communication is performed with the terminal 2 according to the scheduling. After transmitting the sidelink control information (SCI) through the physical sidelink control channel (PSCCH) to the terminal 2, the terminal 1 may transmit data based on the SCI through the physical sidelink shared channel (PSSCH). Transmission mode 1 may be applied to the sidelink and transmission mode 3 may be applied to V2X.

Referring to (b) of FIG. 10, in transmission mode 2/4, the UE can schedule a resource by itself. More specifically, the transmission mode 2 is applied to the sidelink, and the terminal may perform a sidelink operation by selecting the resource itself in the set resource pool. The transmission mode 4 is applied to V2X, and the terminal may perform a V2X operation after selecting a resource within a selection window through a sensing / SA decoding process. After transmitting the SCI through the PSCCH to the UE 2, the UE 1 may transmit data based on the SCI through the PSSCH. Hereinafter, the transmission mode may be abbreviated as mode.

11 illustrates the structure of a self-complete slot. In the NR system, a self-contained structure in which a DL control channel, a DL or UL data channel, a UL control channel, and the like can all be included in one slot may be supported.

For example, the first N symbols (eg, N is a natural number greater than 1) in a slot may be used to transmit a DL control channel (hereinafter, a DL control region). In addition, the last M symbols in the slot (eg, M is a natural number greater than 1) can be used to transmit an UL control channel (hereinafter, UL control region).

In addition, a resource region (hereinafter, a data region) between the DL control region and the UL control region may be used for DL data transmission or UL data transmission. For example, information for a data region (ie, DL data scheduling information and / or UL data scheduling information) may be transmitted in the DL control region.

In addition, in the UL control area, ACK / NACK information, CSI information (Channel State Information), and / or scheduling requests for DL data may be transmitted. In this specification, the terminal may receive cell specific (cell specific) information from the base station (or counterpart terminal).

For example, the UE is associated with a plurality of symbols including uplink symbols, downlink symbols and flexible symbols through cell-specific upper layer signaling (eg, cell-specific information). -It is possible to obtain semi-static setting information. For example, when following the example of the TS 38 series, cell-specific information may mean 'TDD-UL-DL-ConfigurationCommon'.

In this specification, through UE-specific upper layer signaling, the UE may acquire additional configuration information for a flexible symbol set to be cell specific. Furthermore, through DCI of a specific format, the UE may dynamically configure a symbol for a flexible symbol region set by higher layer signaling.

In this specification, an example of a slot format that can be set for a terminal may be as shown in Table 3 below. For reference, the slot format of Table 3 below may be a slot format when a normal CP is applied.

Referring to Table 3, as described above, one slot in the NR may include 14 symbols. For example, D in Table 3 may mean a downlink symbol, U in Table 3 may mean an uplink symbol, and F in Table 3 may mean a flexible symbol.

For a clear and concise understanding of the present specification, a slot format based on Table 3 may be understood as follows.

For example, in the case of the slot format '0', it may mean that all symbols (that is, symbols 0 to 13) existing in one slot are downlink symbols. Also, for example, in the case of the slot format '1', it may mean that all symbols existing in one slot are uplink symbols.

As another example, in the case of the slot format '55', symbol 0, symbol 1, symbol 8 to symbol 13 are downlink symbols, symbols 2 to symbol 4 are flexible symbols, and symbols 5 to symbol 7 can be uplink symbols. have.

In general, in the case of a resource used as a downlink in Uu interface-based communication (ie, base station-terminal communication), when performing a sidelink operation on a corresponding resource, the performance of the communication system is caused by interference. Can fall.

Accordingly, it is possible to limit the sidelink operation to be performed on resources used as an uplink in Uu interface-based communication.

In the present specification, the invention and / or embodiment may be regarded as one proposed method, but a combination between each invention and / or embodiment may also be regarded as a new method. In addition, it is a matter of course that the invention is not limited to the embodiments presented herein, and is not limited to a specific system.

All parameters and / or operations and / or combinations between each parameter and / or operation of the present specification and / or whether or not to apply the corresponding parameters and / or operations and / or whether to apply a combination between each parameter and / or operation is performed by the base station It may be set in advance or defined in the system in advance through higher layer signaling and / or physical layer signaling.

In addition, each of the specifications of the present specification may be defined as one operation mode, and one of them may be transmitted to the UE through higher layer signaling and / or physical layer signaling (in advance. ) To set the base station to operate according to the operation mode.

In addition, this specification describes control information transmitted in a control channel for convenience of description, but this includes various other types of information (for example, data information transmitted in a data channel or information transmitted in a sidelink broadcast channel (for example, , MIB)).

In addition, the TTI referred to in this specification may correspond to units of various lengths, such as a sub-slot / slot / subframe or a basic unit that is a transmission basic unit. In addition, in the present specification, the terminal may correspond to various types of devices such as a vehicle and a pedestrian terminal.

In the present specification, a terminal in which a terminal exists in a communication area (ie, coverage) of the base station to communicate with the base station may be referred to as an In-coverage UE. Of the in-coverage (In-coverage) terminals, a terminal in which an RRC connection is established with a base station may be referred to as an In-coverage RRC connected UE. Also, a terminal in which an RRC connection with a base station is not established among in-coverage terminals may be referred to as an In-coverage RRC idle UE. In this specification, a terminal in which the terminal is outside the communication area (ie, coverage) of the base station may be referred to as an out-coverage UE.

According to the present specification, in order to perform communication between terminals in a V2X system, a candidate group of resources that each terminal can transmit and receive can be set. In this case, a resource candidate group may be set to allow communication between terminals within a resource set as an uplink of base station communication in consideration of interference and the like.

More specifically, the corresponding setting may be indicated by (pre-) setting through higher layer signaling and / or physical layer signaling from the base station to the terminal.

For example, a resource candidate group, that is, a type of a symbol that is a target for setting a resource pool may be as follows.

1. Semi-statically set UL symbol only

2. Semi-statically set UL symbol + dynamically changeable flexible symbol

However, the technical idea of the present invention is not limited to the type of the symbol. For example, a resource pool may be set for a downlink (DL) symbol. For example, considering operation in the FR2 environment, beamforming may be applied, so that an aspect of interference may be different from the FR1 environment. For example, even if a terminal performing sidelink communication transmits / receives data in a DL symbol, the influence of interference may be small according to a beam direction of DL transmission of Uu. Accordingly, in this environment, a resource pool for sidelink transmission can be set on DL symbols (as well as on UL symbols or flexible symbols).

The meaning of dynamically changing used in the present invention can be interpreted as being signaled through at least one of DCI or MAC CE (based on a relatively short time scale). Also, the meaning of semi-fixed change can be interpreted as being signaled through SIB (or MIB) or RRC signaling (based on a relatively long time scale). And, not being dynamically changed may be interpreted as being extended to mean that it is fixed or semi-fixed.

On the other hand, if the semi-statically set UL symbol and the dynamically changeable flexible symbol are set as a resource candidate group (that is, in the case of type 2 of the symbol), the In-coverage RRC-idle UE and the Out-coverage UE dynamically It can be difficult to immediately reflect the information that changes. Therefore, there is a need to propose a resource pool setting method for efficiently reflecting dynamically changed information. Hereinafter, a method for setting a resource pool and an apparatus supporting the same according to an embodiment of the present invention will be described.

In this specification, a method of performing V2X communication by separating the setting of the resource pool for the In-coverage RRC-connected UE and the setting of the resource pool for the In-coverage RRC-idle UE and the Out-coverage UE may be considered. . For example, the setting of the resource pool for the In-coverage RRC-idle UE and the Out-coverage UE is applied only to the UL symbol set semi-statically, and the setting of the resource pool for the In-coverage RRC-connected UE is It can be applied to both semi-statically set UL symbols and dynamically changeable flexible symbols.

It will be understood that the drawings to be described below are only examples of the present specification, and the present specification is not limited thereto.

12 and 13 are diagrams showing an example of a resource pool based on a bitmap format according to an embodiment.

Referring to FIG. 12, it can be assumed that 15 kHz subcarrier spacing (hereinafter referred to as 'SCS') is applied to a subframe.

Referring to Table 1, the sub-frame may be understood as one slot including 14 symbols (ie, symbols 0 to 13). Also, it can be assumed that the slot format '27' of Table 3 is applied to one slot included in the subframe.

Accordingly, among the 14 symbols included in one slot, symbols 0 through 2 may be downlink symbols. Among the 14 symbols included in one slot, symbols 3 to 10 may be flexible symbols. Of the 14 symbols included in one slot, symbols 11 to 13 may be uplink symbols.

According to this embodiment, the first resource pool (Resource Pool # 1) of FIG. 12 for the In-coverage RRC connected UE is a dynamically changeable flexible symbol (eg, 3 to 10 symbols in FIG. 12) and It may include bitmap information (eg, '01010100011') configured based on the semi-statically set UL symbol (eg, symbols 11 to 13 of FIG. 12).

For example, the first resource pool (Resource Pool # 1) of FIG. 12 may be understood as a resource pool for an In-coverage RRC connected UE. For example, the first resource pool (Resource Pool # 1) of FIG. 12 includes a combination of 4 symbols, 6 symbols, and 8 symbols selected from flexible symbols and 12 symbols and 13 symbols selected from uplink symbols. can do.

For example, the first resource pool (Resource Pool # 1) of FIG. 12 may be repeatedly used during a period to which 15 kHz subcarrier spacing is applied.

According to this embodiment, the second resource pool (Resource Pool # 2) of FIG. 12 for the In-coverage RRC-idle UE and the Out-coverage UE is a semi-statically configured UL symbol (eg, 11 of FIG. 12) It may include bitmap information (for example, '011') configured based only on symbols (symbols 13 to 13).

For example, the second resource pool (Resource Pool # 2) of FIG. 12 may be understood as a resource pool for In-coverage RRC-idle UE and / or Out-coverage UE. For example, the second resource pool (Resource Pool # 2) of FIG. 12 may include symbols 12 and 13 selected from uplink symbols.

For example, the second resource pool (Resource Pool # 2) of FIG. 12 may be repeatedly used during a period to which 15 kHz subcarrier spacing is applied.

As illustrated in FIG. 12, the first resource pool (Resource Pool # 1) of FIG. 12 for an In-coverage RRC connected UE is a second resource pool for an In-coverage RRC-idle UE and an Out-coverage UE (Resource) It can be set as a super set of Pool # 2).

Referring to FIG. 13, it can be assumed that 30 kHz SCS is applied to a sub-frame. Referring to Table 1, a subframe may include two slots.

For example, the first slot (Slot # 1) of FIG. 13 may include 14 symbols (ie, symbols 0 to 13). The second slot (Slot # 2) of FIG. 13 may include 14 symbols (ie, symbols 14 to 27).

It can be assumed that the slot formats '27' and '33' of Table 3 are sequentially applied for the two slots included in the subframe of FIG. 13. Accordingly, among the 14 symbols (that is, symbols 0 to 13) included in the first slot (Slot # 1), symbols 0 to 2 may be downlink symbols.

In addition, symbols 3 to 10 of the 14 symbols (that is, symbols 0 to 13) included in the first slot (Slot # 1) may be flexible symbols. In addition, symbols 11 through 13 of the 14 symbols (that is, symbols 0 to 13) included in the first slot (Slot # 1) may be uplink symbols.

In addition, symbols 14 through 22 of 14 symbols included in the second slot (Slot # 2) may be downlink symbols.

Also, among the 14 symbols (that is, symbols 14 to 27) included in the second slot (Slot # 2), symbols 23 to 25 may be flexible symbols.

Also, up to 26 symbols and 27 symbols from 14 symbols (ie, 14 symbols to 27 symbols) included in the second slot (Slot # 2) may be uplink symbols.

According to this embodiment, the first resource pool (Resource Pool # 1) of FIG. 13 for an In-coverage RRC connected UE is a dynamically changeable flexible symbol (eg, 3 to 10 symbols in FIG. 13, FIG. Bitmap information constructed based on 13 symbols 23 to 25 and a semi-statically set UL symbol (for example, 11 to 13 symbols in FIG. 13, 26 and 27 symbols in FIG. 13) (Eg, '0101010001101111').

Here, the first resource pool (Resource Pool # 1) of FIG. 13 may be understood as a resource pool for an In-coverage RRC connected UE.

For example, the first resource pool (Resource Pool # 1) of FIG. 13 is selected from the 4th symbol, the 6th symbol, and the 8th symbol and the first slot (Slot) selected from the flexible symbols included in the first slot (Slot # 1). It may include a combination of 12 symbols and 13 symbols selected from the uplink symbols included in # 1).

In addition, the first resource pool (Resource Pool # 1) of FIG. 13 is included in the 24th symbol and the 25th symbol selected from the flexible symbols included in the second slot (Slot # 2) and the second slot (Slot # 2). It may include a combination of the 26 symbols and the 27 symbols selected from the uplink symbols.

For example, the first resource pool (Resource Pool # 1) of FIG. 13 may be repeatedly used during a period to which 30 kHz subcarrier spacing is applied.

According to this embodiment, the second resource pool (Resource Pool # 2) of FIG. 13 for In-coverage RRC-idle UE and / or Out-coverage UE is a semi-statically configured UL symbol (eg, FIG. 13) Bitmap information (eg, '01111') configured based on symbols 11 to 13 and symbols 26 and 27 in FIG. 13 may be included.

Here, the second resource pool (Resource Pool # 2) of FIG. 13 may be understood as a resource pool for In-coverage RRC-idle UE and / or Out-coverage UE.

For example, the second resource pool (Resource Pool # 2) of FIG. 13 may include symbols 12 and 13 selected from uplink symbols included in the first slot (Slot # 1). In addition, the second resource pool (Resource Pool # 2) of FIG. 13 may include symbols 26 and 27 selected from uplink symbols included in the second slot (Slot # 2).

For example, the second resource pool (Resource Pool # 2) of FIG. 13 may be repeatedly used during a period to which 30 kHz subcarrier spacing is applied.

As shown in FIG. 13, the first resource pool (Resource Pool # 1) of FIG. 13 for the In-coverage RRC connected UE is a second resource pool for the In-coverage RRC-idle UE and the Out-coverage UE (Resource) It can be set as a super set of Pool # 2).

14 and 15 are diagrams showing an example of a resource pool based on a bitmap format according to another embodiment of the present invention. Referring to FIG. 14, it can be assumed that 15 kHz SCS is applied to a sub-frame.

In addition, referring to Table 1, the sub-frame may be understood as one slot including 14 symbols (ie, symbols 0 to 13). Also, it can be assumed that the slot format '27' of Table 3 is applied to one slot included in the subframe.

Accordingly, among the 14 symbols included in one slot, symbols 0 through 2 may be downlink symbols. Among the 14 symbols included in one slot, symbols 3 to 10 may be flexible symbols. Of the 14 symbols included in one slot, symbols 11 to 13 may be uplink symbols.

According to another embodiment, the first resource pool (Resource Pool # 1) of FIG. 14 for an In-coverage RRC connected UE is a dynamically changeable flexible symbol (eg, 3 to 10 symbols in FIG. 14) and It may include bitmap information (eg, '01010100011') configured based on the semi-statically set UL symbol (eg, symbols 11 to 13 of FIG. 14).

For example, the first resource pool (Resource Pool # 1) of FIG. 14 may be understood as a resource pool for an In-coverage RRC connected UE. For example, the first resource pool (Resource Pool # 1) of FIG. 14 includes a combination of symbols 4, 6 and 8 selected from flexible symbols and symbols 12 and 13 selected from uplink symbols. can do.

For example, the first resource pool (Resource Pool # 1) of FIG. 14 may be repeatedly used during a period to which 15 kHz subcarrier spacing is applied.

According to another embodiment, the second resource pool (Resource Pool # 2) of FIG. 14 for the In-coverage RRC-idle UE and the Out-coverage UE is a semi-fixed UL symbol (eg, 11 of FIG. 14) It may include bitmap information (eg, '100') configured based only on the symbol to the 13th symbol.

Here, the second resource pool (Resource Pool # 2) of FIG. 14 may be understood as a resource pool for In-coverage RRC-idle UE and / or Out-coverage UE. For example, the second resource pool (Resource Pool # 2) of FIG. 14 may include a symbol 11 selected from uplink symbols.

For example, the second resource pool (Resource Pool # 2) of FIG. 14 may be repeatedly used during a period to which 15 kHz subcarrier spacing is applied. 15, it may be assumed that 30 kHz SCS is applied to a sub-frame. Referring to Table 1, a subframe may include two slots.

For example, the first slot (Slot # 1) of FIG. 15 may include 14 symbols (ie, symbols 0 to 13). The second slot (Slot # 2) of FIG. 15 may include 14 symbols (ie, symbols 14 to 27).

It can be assumed that the slot formats '27' and '33' of Table 3 are sequentially applied for the two slots included in the subframe of FIG. 15. Accordingly, among the 14 symbols (that is, symbols 0 to 13) included in the first slot (Slot # 1), symbols 0 to 2 may be downlink symbols.

In addition, symbols 3 to 10 of the 14 symbols (that is, symbols 0 to 13) included in the first slot (Slot # 1) may be flexible symbols. In addition, symbols 11 through 13 of the 14 symbols (that is, symbols 0 to 13) included in the first slot (Slot # 1) may be uplink symbols.

In addition, symbols 14 through 22 of 14 symbols included in the second slot (Slot # 2) may be downlink symbols.

Also, among the 14 symbols (that is, symbols 14 to 27) included in the second slot (Slot # 2), symbols 23 to 25 may be flexible symbols.

Also, up to 26 symbols and 27 symbols from 14 symbols (ie, 14 symbols to 27 symbols) included in the second slot (Slot # 2) may be uplink symbols.

According to another embodiment, the first resource pool (Resource Pool # 1) of FIG. 15 for an In-coverage RRC connected UE is a dynamically changeable flexible symbol (eg, 3 to 10 symbols in FIG. 15, FIG. Bitmap information constructed based on 15 symbols 23 to 25 and a semi-statically set UL symbol (for example, 11 to 13 symbols in FIG. 15, 26 and 27 symbols in FIG. 15) (Eg, '0101010001101101').

Here, the first resource pool (Resource Pool # 1) of FIG. 15 may be understood as a resource pool for an In-coverage RRC connected UE.

For example, the first resource pool (Resource Pool # 1) of FIG. 15 is selected from the 4th symbol, the 6th symbol, and the 8th symbol and the 1st slot (Slot) selected from the flexible symbols included in the first slot (Slot # 1). It may include a combination of 12 symbols and 13 symbols selected from the uplink symbols included in # 1).

In addition, the first resource pool (Resource Pool # 1) of FIG. 15 is included in the 24th symbol and the 25th symbol selected from the flexible symbols included in the second slot (Slot # 2) and the second slot (Slot # 2). It may include a combination of 27 symbols selected from the uplink symbols.

For example, the first resource pool (Resource Pool # 1) of FIG. 15 may be repeatedly used during a period to which 30 kHz subcarrier spacing is applied.

According to another embodiment, the second resource pool (Resource Pool # 2) of FIG. 15 for the In-coverage RRC-idle UE and / or the Out-coverage UE is a semi-statically configured UL symbol (eg, FIG. 15) Bitmap information (eg, '10010') configured based on symbols 11 to 13 and symbols 26 and 27 of FIG. 15 may be included.

Here, the second resource pool (Resource Pool # 2) of FIG. 15 may be understood as a resource pool for In-coverage RRC-idle UE and / or Out-coverage UE.

For example, the second resource pool (Resource Pool # 2) of FIG. 15 may include an 11 symbol selected from uplink symbols included in the first slot (Slot # 1). In addition, the second resource pool (Resource Pool # 2) of FIG. 15 may include a number 26 symbol selected from uplink symbols included in the second slot (Slot # 2).

For example, the second resource pool (Resource Pool # 2) of FIG. 15 may be repeatedly used during a period to which 30 kHz subcarrier spacing is applied.

14 and 15, a first resource pool (Resource Pool # 1) for an In-coverage RRC connected UE and a second resource pool (Resource Pool # 1) for an In-coverage RRC-idle UE and an Out-coverage UE Pool # 2) may be set in a time division multiplexing (TDM) format.

14 and 15, when the resource pool for the In-coverage RRC-idle UE and the Out-coverage UE and the resource pool for the In-coverage RRC-connected UE are separated based on TDM, each UE ( It can be expected that a collision does not occur between a resource pool signaled by an operation and a resource pool that has been set in advance. And, the base station can prevent collisions between resource pools through scheduling.

14 and 15, whether the resource pool for the In-coverage RRC-idle UE and the Out-coverage UE and the resource pool for the In-coverage RRC-connected UE are separated based on TDM is a system. Can be defined in advance.

In addition, whether the resource pool for the In-coverage RRC-idle UE and the Out-coverage UE and the resource pool for the In-coverage RRC-connected UE is performed based on TDM is performed by higher layer signaling from the base station to the UE (higher layer signaling) and / or physical layer signaling. To this end, the resource pool configuration may be divided into a configuration for a semi-statically configured UL symbol and a configuration for a dynamically changeable flexible symbol.

For example, the upper layer signaling may be application layer signaling, L2 signaling or L3 signaling. For example, the physical layer signaling may be L1 signaling.

As described above, the present specification is not limited to the embodiments mentioned through FIGS. 12 to 15, and a resource pool may be set for DL symbols.

In addition, it will be understood that in this specification, the Tx resource pool and the Rx resource pool for the terminal can be set, respectively.

For example, when a resource pool is associated with a transmission operation of a terminal, the corresponding resource pool can be understood as a Tx resource pool. It will be appreciated that the embodiments of FIGS. 12-15 can be applied for a Tx resource pool.

In addition, when the resource pool is associated with the reception operation of the terminal, the corresponding resource pool may be understood as an Rx resource pool. For example, the RX resource pool may be set differently depending on whether each terminal is in-coverage or out-coverage and / or RRC-connected or RRC-idle.

In this case, the RX resource pool for the In-coverage RRC-connected UE can be set for both the UL symbol set as semi-static and the dynamically changeable flexible symbol.

In addition, the RX resource pools for the In-coverage RRC-idle UE and the Out-coverage UE can also be set for both UL symbols set as semi-static and dynamically changeable flexible symbols.

Accordingly, even if the TX resource pool of the In-coverage RRC-connected UE is dynamically changed and the Out-coverage UE cannot dynamically update the information on the changed TX resource pool, the Out-coverage UE transmits the In-coverage UE You can receive without missing.

In addition, when the Out-coverage UE transmits, since the TX resource pool is set for a semi-static resource, the In-coverage UE can receive the transmission of the Out-coverage UE without missing.

In this specification, the configuration for the semi-statically configured UL symbol and the flexible symbol may be understood as a cell-specific configuration or a UE-specific configuration.

16 illustrates a method for performing communication in a wireless communication system according to an embodiment of the present invention.

Referring to FIGS. 1 to 16, in step S1610, the first terminal may receive a configuration for a first resource pool including one or more predetermined symbols from a base station.

For example, configuration for the first resource pool may be determined in advance through higher layer signaling and / or physical layer signaling from the base station to the terminal.

As another example, configuration for the first resource pool may be determined in advance through higher layer signaling and / or physical layer signaling from the server to the terminal for an intelligent transport system (ITS).

For example, the upper layer signaling may be application layer signaling, L2 signaling or L3 signaling. For example, the physical layer signaling may be L1 signaling.

According to this embodiment, one or more symbols included in the first resource pool may be determined based on a radio resource control (RRC) state of the first terminal and whether the first terminal is included in the coverage of the base station.

For example, when the first terminal is not included in the coverage of the base station (that is, when the first terminal is an out-coverage UE), one or more symbols included in the first resource pool are configured with only uplink symbols Can be.

For example, when the RRC state of the first terminal included in the coverage of the base station is an RRC-idle state (ie, the first terminal is an In-coverage RRC-idle UE), one or more included in the first resource pool The symbol may consist of only uplink symbols.

For example, when the RRC state of the first terminal included in the coverage of the base station is an RRC-connected state (ie, the first terminal is an In-coverage RRC-connected UE), one or more included in the first resource pool The symbol may be composed of a combination of one or more uplink symbols and one or more flexible symbols.

For example, the first resource pool (ie, the Tx resource pool) referred to in FIG. 16 may be understood as bitmap information associated with a transmission operation of the first terminal.

In step S1620, the first terminal may transmit information including first area information for the first resource pool to the second terminal. For example, the information may be a scheduling assignment (SA). For example, the information may be transmitted on at least one symbol among one or more symbols included in the first resource pool.

For example, the information includes information related to coverage with the base station of the first terminal (ie, In-coverage or Out-coverage) and / or information related to RRC connection (ie, RRC-idle or RRC-connected) and / or Alternatively, it may include information on an area in which the TX resource pool of the first terminal is set and / or information on an area in which the RX resource pool of the first terminal is set.

For example, the information on the area in which the TX resource pool of the first terminal is set includes whether one or more symbols included in the first resource pool are composed of only uplink symbols or one or more uplink symbols and one or more flexible. It may include information about whether the combination of symbols.

It will be understood that the information included in the control information mentioned herein is not limited to the above. For example, when terminals configured with resource pools coexist in different regions, a resource pool to which information transmitted by each terminal is applied may correspond to information capable of distinguishing the set region. Accordingly, according to the present specification, ambiguity in sensing and resource reservation between terminals may be eliminated.

For example, the In-coverage RRC-idle UE and the Out-coverage UE are configured with the TX resource pool only for the semi-statically configured UL symbol, and the corresponding region information (the semi-static UL symbol region) is obtained from the corresponding resource pool. When transmitting by including the transmitted control information (for example, SA), when the other terminal that decodes it interprets information (for example, resource reservation) included in the control information, an area corresponding to the information (for example, half- It can be interpreted as limited to a fixed UL symbol).

In addition, although not shown in FIG. 16, the first terminal may set a second resource pool including one or more predetermined symbols. The second resource pool (ie, Rx resource pool) referred to in FIG. 16 may be understood as bitmap information associated with a reception operation of the first terminal.

As described above, one or more symbols included in the second resource pool may also be determined based on the RRC state of the first terminal and whether the first terminal is included in the coverage of the base station. For example, the information transmitted in step S1620 may further include second area information for the second resource pool.

However, it will be understood that the method of setting the resource pool referred to in this specification is not limited to the embodiments of FIGS. 12 to 16. For example, the configuration (eg, bitmap) for the resource pool may be separately set for each of the UL symbol set to semi-static and the dynamically changeable flexible symbol.

For example, settings for a plurality of resource pools (eg, bitmaps) may be applied to each symbol type area. Settings for a plurality of resource pools (eg, bitmaps) may be predefined in the system.

The configuration (eg, bitmap) for a plurality of resource pools may be set in advance through higher layer signaling from the base station to the terminal and / or physical layer signaling.

For example, the upper layer signaling may be application layer signaling, L2 signaling or L3 signaling. For example, the physical layer signaling may be L1 signaling.

For example, each terminal may operate by referring to a necessary setting (eg, a bitmap) based on whether it is in-coverage or out-coverage and / or RRC-connected or RRC-idle. For example, in the case of an In-coverage RRC-connected UE, a TX resource pool may be set for both an uplink symbol set as semi-static and a dynamically changeable flexible symbol. Therefore, the setting for the Tx resource pool may also be set by referring to the setting for each of the uplink symbol and the dynamically changeable flexible symbol (eg, bitmap for each), which are set to semi-static.

In this specification, for setting for the Tx resource pool, a method of directly setting a symbol capable of transmitting a sidelink or a symbol capable of receiving may be considered.

For example, an uplink symbol set as semi-static may correspond to a side link symbol set as semi-static. Also, the dynamically changeable flexible symbol may correspond to a dynamically changeable sidelink symbol.

Specifically, Rel. In the 15 NR system, UL, DL, and flexible are defined as a type of slot format indication. Also, a type for a sidelink (hereinafter, SL) symbol may be additionally defined. In this case, SL symbols may be directly designated.

In this specification, an area in which an SL symbol can be set is Rel. Based on the signaling of 15, it may be limited to a region set with a semi-fixed UL symbol. Here, as described above, the semi-fixed UL symbol may be interpreted by being limited to a cell-specific set region and / or a UE-specific set region.

In this specification, a plurality of settings (for example, a bitmap) may be given to a dynamically changeable flexible symbol. In this case, it may be determined which of the plurality of settings is applied through separate settings.

For example, a plurality of settings (eg, bitmap) may be predefined in the system. The plurality of settings (eg, bitmap) may be set in advance through higher layer signaling from the base station to the terminal and / or physical layer signaling.

For example, the upper layer signaling may be application layer signaling, L2 signaling or L3 signaling. For example, the physical layer signaling may be L1 signaling.

For example, in a situation in which a base station has given a plurality of settings (eg, a plurality of bitmap settings) to a user equipment through higher layer signaling, the base station may indicate one of a plurality of preset settings through physical layer signaling.

For example, the terminal may forward information about the setting received from the base station to another terminal. For example, through a broadcast channel such as PSBCH or a control channel such as PSCCH, information regarding the setting may be forwarded to another terminal.

For example, the above operation may be applied to set a resource pool that is more suitable for configuration associated with the changed slot format when the slot format is dynamically changed.

For example, a slot format index indicating information about a slot format may be dynamically transmitted through a group common DCI. Also, for sidelink operation, a slot format index may be transmitted through a broadcast channel such as PSBCH or a control channel such as PSCCH. However, in order to reduce the number of bits for transmitting information associated with a slot format index in a corresponding channel (eg, a broadcast channel or a control channel), a plurality of candidate slot format indexes are It can be predefined in the system. Alternatively, a plurality of candidate slot format indexes may be set in advance through higher layer signaling and / or physical layer signaling from the base station to the terminal. For example, a bit representing one of a plurality of slot format indexes may be transmitted through a broadcast channel such as PSBCH or a control channel such as PSCCH.

In this specification, depending on the type of channel (ie, control channel or data channel), the setting of the resource pool may be applied differently. For example, a control channel can be predefined in the system. The control channel may be transmitted in a (pre-) set resource region through higher layer signaling and / or physical layer signaling from the base station to the terminal.

For example, the setting of a resource pool for a data channel can be transmitted through transmission of a control channel (eg, transmission of SCI). At this time, a plurality of resource pools may be predefined in the system. Alternatively, a plurality of resource pools may be set (in advance) through upper layer signaling and / or physical layer signaling from the base station to the terminal. When a plurality of resource pools are set, any one of the plurality of resource pools may be dynamically indicated through transmission of a control channel (eg, transmission of SCI). In addition to the mentioned scheme, the control channel is transmitted on a semi-statically configured UL resource, and a resource pool setting for the data channel may be transmitted through the transmission of the control channel (eg, transmission of SCI).

When considering an inter-cell environment, a resource pool may be set differently for each cell. In this case, for example, the terminal located at the cell edge (cell-edge) can receive all information about the resource pool (resource poo) associated with each cell from both cells. And, if the resource pool is received from different cells, DFN (Direct Frame Number) may also be separately numbered for each resource pool. Here, DFN may be used to derive timing information associated with transmission by each cell. Through this, in a situation where different slot formats are set for each cell, it may occur when the setting of the resource pool for each cell is set identically (that is, when the same bitmap information is set for the resource pool). Errors can be prevented. In the above environment, when the terminal performs sidelink transmission, the terminal controls information (e.g., cell ID) of the resource pool to which the transmission belongs and / or base station information (e.g., cell ID) that sets the resource pool. SA). Furthermore, the terminal may transmit information related to the resource pool and / or information related to timing (eg, DFN information) to information transmitted on a channel other than a sync channel such as control information. In this case, even before the other terminal receives the configuration related to the resource pool, it is possible to access the network faster and start transmission through decoding of the control information and the like.

17 illustrates a method for a first terminal to perform communication according to this embodiment.

1 to 17, in step S1710, the first terminal may receive information about the first resource pool (first resource pool) and information about the second resource pool (second resource pool) from the base station. The first resource pool and the second resource pool may be resource pools for sidelink transmission. The first resource pool may be a subset of the second resource pool.

In step S1720, based on the radio resource control (RRC) state of the first terminal and whether the first terminal is included in the coverage of the base station, the first terminal is either the first resource pool or the second resource pool The resource pool for the sidelink can be determined.

In step S1730, the first terminal may transmit information on the resource pool for the sidelink to the second terminal.

The first resource pool may include only one or more uplink symbols set as semi-static, and the second resource pool may include one or more uplink symbols set as semi-static and one or more flexible. Symbols may be included.

When the first terminal is not included in the coverage of the base station, the first resource pool may be determined as a resource pool for the sidelink. When the RRC state of the first terminal included in the coverage of the base station is an RRC-idle state, the first resource pool may be determined as a resource pool for the sidelink. When the RRC state of the first terminal included in the coverage of the base station is an RRC-connected state, the second resource pool may be determined as a resource pool for the sidelink.

Additionally, the first terminal may receive information on a third resource pool from the base station. In this case, the third resource pool may be a resource pool for sidelink reception, and the third resource pool may include one or more uplink symbols and one or more flexible symbols set semi-statically. In this case, the information on the resource pool for the sidelink may include at least one of information on the first resource pool, information on the second resource pool, or information on the third resource pool.

The information on the resource pool for the sidelink may be information on whether the resource pool for the sidelink includes only semi-fixed uplink symbols or semi-fixed uplink symbols and flexible symbols. The information on the resource pool for the sidelink may include at least one of information about the RRC status of the first terminal or whether the first terminal is included in the coverage of the base station.

Additionally, the first resource pool may be a resource pool for the sidelink associated with a control channel, and the second resource pool may be the sidelink resource pool associated with a data channel. In this case, the first terminal may transmit information on the second resource pool related to the data channel to the second terminal.

Information on the resource pool for the sidelink may be transmitted through at least one of a physical sidelink control channel (PSCCH), a physical sidelink shared channel (PSSCH), or a physical sidelink broadcast channel (PSBCH).

Hereinafter, a device to which the present invention can be applied will be described.

Although not limited thereto, the various proposals of the present invention described above may be applied to various fields requiring wireless communication / connection (eg, 5G) between devices.

Hereinafter, with reference to the drawings will be illustrated in more detail. In the following drawings / description, the same reference numerals may exemplify the same or corresponding hardware blocks, software blocks, or functional blocks, unless otherwise indicated.

18 illustrates a communication system 1 applied to the present invention.

Referring to FIG. 18, the communication system 1 applied to the present invention includes a wireless device, a base station and a network. Here, the wireless device means a device that performs communication using a wireless access technology (eg, 5G NR (New RAT), Long Term Evolution (LTE)), and may be referred to as a communication / wireless / 5G device. Although not limited to this, the wireless device includes a robot 100a, a vehicle 100b-1, 100b-2, an XR (eXtended Reality) device 100c, a hand-held device 100d, and a home appliance 100e. ), An Internet of Thing (IoT) device 100f, and an AI device / server 400. For example, the vehicle may include a vehicle equipped with a wireless communication function, an autonomous driving vehicle, a vehicle capable of performing inter-vehicle communication, and the like. Here, the vehicle may include a UAV (Unmanned Aerial Vehicle) (eg, a drone). XR devices include Augmented Reality (AR) / Virtual Reality (VR) / Mixed Reality (MR) devices, Head-Mounted Device (HMD), Head-Up Display (HUD) provided in vehicles, televisions, smartphones, It may be implemented in the form of a computer, wearable device, home appliance, digital signage, vehicle, robot, or the like. The mobile device may include a smart phone, a smart pad, a wearable device (eg, a smart watch, smart glasses), a computer (eg, a notebook, etc.). Household appliances may include a TV, a refrigerator, and a washing machine. IoT devices may include sensors, smart meters, and the like. For example, the base station and the network may also be implemented as wireless devices, and the specific wireless device 200a may operate as a base station / network node to other wireless devices.

The wireless devices 100a to 100f may be connected to the network 300 through the base station 200. AI (Artificial Intelligence) technology may be applied to the wireless devices 100a to 100f, and the wireless devices 100a to 100f may be connected to the AI server 400 through the network 300. The network 300 may be configured using a 3G network, a 4G (eg, LTE) network, or a 5G (eg, NR) network. The wireless devices 100a to 100f may communicate with each other through the base station 200 / network 300, but may directly communicate (e.g. sidelink communication) without going through the base station / network. For example, the vehicles 100b-1 and 100b-2 may perform direct communication (e.g. Vehicle to Vehicle (V2V) / Vehicle to everything (V2X) communication). Further, the IoT device (eg, sensor) may directly communicate with other IoT devices (eg, sensors) or other wireless devices 100a to 100f.

Wireless communication / connections 150a and 150b may be made between the wireless devices 100a to 100f / base station 200 to the base station 200 / wireless devices 100a to 100f. Here, the wireless communication / connection may be achieved through various radio access technologies (eg, 5G NR) for up / downlink communication 150a and sidelink communication 150b (or D2D communication). The wireless device and the base station / wireless device can transmit / receive wireless signals to each other through wireless communication / connections 150a and 150b. For example, the wireless communication / connection 150a, 150b may transmit / receive signals through various physical channels based on the whole / some processes of FIG. A1. To this end, based on various proposals of the present invention, various configuration information setting processes for transmitting / receiving wireless signals, various signal processing processes (eg, channel encoding / decoding, modulation / demodulation, resource mapping / demapping, etc.) At least a part of the resource allocation process may be performed.

19 illustrates a wireless device that can be applied to the present invention.

Referring to FIG. 19, the first wireless device 100 and the second wireless device 200 may transmit and receive wireless signals through various wireless access technologies (eg, LTE and NR). Here, {the first wireless device 100, the second wireless device 200} is shown in FIG. 18 {wireless device 100x, base station 200} and / or {wireless device 100x), wireless device 100x }.

The first wireless device 100 includes one or more processors 102 and one or more memories 104, and may further include one or more transceivers 106 and / or one or more antennas 108. The processor 102 controls the memory 104 and / or the transceiver 106 and can be configured to implement the functions / procedures and / or methods described / proposed above. For example, the processor 102 may process information in the memory 104 to generate the first information / signal, and then transmit the wireless signal including the first information / signal through the transceiver 106. Further, the processor 102 may receive the wireless signal including the second information / signal through the transceiver 106 and then store the information obtained from the signal processing of the second information / signal in the memory 104. The memory 104 may be connected to the processor 102 and may store various information related to the operation of the processor 102. For example, memory 104 may store software code that includes instructions to perform some or all of the processes controlled by processor 102, or to perform the procedures and / or methods described / proposed above. . Here, the processor 102 and the memory 104 may be part of a communication modem / circuit / chip designed to implement wireless communication technology (eg, LTE, NR). The transceiver 106 can be coupled to the processor 102 and can transmit and / or receive wireless signals through one or more antennas 108. The transceiver 106 may include a transmitter and / or receiver. The transceiver 106 may be mixed with a radio frequency (RF) unit. In the present invention, the wireless device may mean a communication modem / circuit / chip.

The second wireless device 200 includes one or more processors 202, one or more memories 204, and may further include one or more transceivers 206 and / or one or more antennas 208. The processor 202 controls the memory 204 and / or the transceiver 206, and may be configured to implement the functions / procedures and / or methods described / proposed above. For example, the processor 202 may process information in the memory 204 to generate third information / signal, and then transmit a wireless signal including the third information / signal through the transceiver 206. Further, the processor 202 may receive the wireless signal including the fourth information / signal through the transceiver 206 and store the information obtained from the signal processing of the fourth information / signal in the memory 204. The memory 204 may be connected to the processor 202, and may store various information related to the operation of the processor 202. For example, the memory 204 can store software code that includes instructions to perform some or all of the processes controlled by the processor 202, or to perform the procedures and / or methods described / proposed above. . Here, the processor 202 and the memory 204 may be part of a communication modem / circuit / chip designed to implement wireless communication technology (eg, LTE, NR). The transceiver 206 can be coupled to the processor 202 and can transmit and / or receive wireless signals through one or more antennas 208. Transceiver 206 may include a transmitter and / or receiver. Transceiver 206 may be mixed with an RF unit. In the present invention, the wireless device may mean a communication modem / circuit / chip.

Hereinafter, hardware elements of the wireless devices 100 and 200 will be described in more detail. Without being limited to this, one or more protocol layers may be implemented by one or more processors 102 and 202. For example, one or more processors 102, 202 may implement one or more layers (eg, functional layers such as PHY, MAC, RLC, PDCP, RRC, SDAP). The one or more processors 102 and 202 may generate one or more Protocol Data Units (PDUs) and / or one or more Service Data Units (SDUs) according to the functions, procedures, suggestions, and / or methods disclosed in this document. The one or more processors 102, 202 may generate messages, control information, data or information according to the functions, procedures, suggestions and / or methods disclosed herein. The one or more processors 102, 202 generate signals (eg, baseband signals) including PDUs, SDUs, messages, control information, data or information according to the functions, procedures, suggestions and / or methods disclosed herein. , To one or more transceivers 106, 206. One or more processors 102, 202 may receive signals (eg, baseband signals) from one or more transceivers 106, 206, PDUs, SDUs according to the functions, procedures, suggestions and / or methods disclosed herein. , Message, control information, data or information.

One or more processors 102, 202 may be referred to as a controller, microcontroller, microprocessor, or microcomputer. The one or more processors 102, 202 may be implemented by hardware, firmware, software, or a combination thereof. For example, one or more Application Specific Integrated Circuits (ASICs), one or more Digital Signal Processors (DSPs), one or more Digital Signal Processing Devices (DSPDs), one or more Programmable Logic Devices (PLDs), or one or more Field Programmable Gate Arrays (FPGAs) May be included in one or more processors 102, 202. The functions, procedures, suggestions and / or methods disclosed in this document can be implemented using firmware or software, and the firmware or software can be implemented to include modules, procedures, functions, and the like. Firmware or software configured to perform the functions, procedures, suggestions and / or methods disclosed herein is included in one or more processors 102, 202, or stored in one or more memories 104, 204, where one or more processors 102, 202). The functions, procedures, suggestions, and / or methods disclosed in this document can be implemented using firmware or software in the form of code, instructions and / or instructions.

One or more memories 104, 204 may be coupled to one or more processors 102, 202, and may store various types of data, signals, messages, information, programs, codes, instructions, and / or instructions. The one or more memories 104, 204 may be comprised of ROM, RAM, EPROM, flash memory, hard drive, register, cache memory, computer readable storage medium and / or combinations thereof. The one or more memories 104, 204 may be located inside and / or outside of the one or more processors 102, 202. Also, the one or more memories 104 and 204 may be connected to the one or more processors 102 and 202 through various technologies such as a wired or wireless connection.

The one or more transceivers 106 and 206 may transmit user data, control information, radio signals / channels, and the like referred to in the methods and / or operational flowcharts of the present document to one or more other devices. The one or more transceivers 106, 206 may receive user data, control information, radio signals / channels, and the like referred to in functions, procedures, suggestions, methods, and / or operational flowcharts, etc. disclosed herein from one or more other devices. For example, one or more transceivers 106, 206 may be coupled to one or more processors 102, 202, and may transmit and receive wireless signals. For example, one or more processors 102, 202 can control one or more transceivers 106, 206 to transmit user data, control information, or wireless signals to one or more other devices. Additionally, the one or more processors 102, 202 may control one or more transceivers 106, 206 to receive user data, control information, or wireless signals from one or more other devices. In addition, one or more transceivers 106, 206 may be coupled with one or more antennas 108, 208, and one or more transceivers 106, 206 may be through the one or more antennas 108, 208, functions, procedures disclosed herein. , It may be set to transmit and receive user data, control information, radio signals / channels, and the like mentioned in the proposal, method, and / or operation flowchart. In this document, the one or more antennas may be a plurality of physical antennas or a plurality of logical antennas (eg, antenna ports). The one or more transceivers 106 and 206 process the received user data, control information, radio signals / channels, etc. using one or more processors 102, 202, and receive radio signals / channels from the RF band signal. It can be converted to a baseband signal. The one or more transceivers 106 and 206 may convert user data, control information, and radio signals / channels processed using one or more processors 102 and 202 from a baseband signal to an RF band signal. To this end, the one or more transceivers 106, 206 may include (analog) oscillators and / or filters.

20 illustrates a signal processing circuit for a transmission signal.

Referring to FIG. 20, the signal processing circuit 1000 may include a scrambler 1010, a modulator 1020, a layer mapper 1030, a precoder 1040, a resource mapper 1050, and a signal generator 1060. have. Although not limited to this, the operations / functions of FIG. 20 may be performed in processors 102, 202 and / or transceivers 106, 206 of FIG. The hardware elements of FIG. 20 can be implemented in the processors 102, 202 and / or transceivers 106, 206 of FIG. 19. For example, blocks 1010 to 1060 may be implemented in processors 102 and 202 of FIG. 19. In addition, blocks 1010 to 1050 may be implemented in the processors 102 and 202 of FIG. 19, and block 1060 may be implemented in the transceivers 106 and 206 of FIG. 19.

The codeword may be converted into a wireless signal through the signal processing circuit 1000 of FIG. 20. Here, the codeword is an encoded bit sequence of an information block. The information block may include a transport block (eg, UL-SCH transport block, DL-SCH transport block). The radio signal may be transmitted through various physical channels (eg, PUSCH, PDSCH) of FIG. A1.

Specifically, the codeword may be converted into a scrambled bit sequence by the scrambler 1010. The scramble sequence used for scramble is generated based on the initialization value, and the initialization value may include ID information of the wireless device. The scrambled bit sequence can be modulated into a modulated symbol sequence by the modulator 1020. The modulation method may include pi / 2-Binary Phase Shift Keying (pi / 2-BPSK), m-Phase Shift Keying (m-PSK), m-Quadrature Amplitude Modulation (m-QAM), and the like. The complex modulation symbol sequence may be mapped to one or more transport layers by the layer mapper 1030. The modulation symbols of each transport layer may be mapped to the corresponding antenna port (s) by the precoder 1040 (precoding). The output z of the precoder 1040 can be obtained by multiplying the output y of the layer mapper 1030 by the precoding matrix W of N * M. Here, N is the number of antenna ports and M is the number of transport layers. Here, the precoder 1040 may perform precoding after performing transform precoding (eg, DFT transformation) on complex modulation symbols. Further, the precoder 1040 may perform precoding without performing transform precoding.

The resource mapper 1050 may map modulation symbols of each antenna port to time-frequency resources. The time-frequency resource may include a plurality of symbols (eg, CP-OFDMA symbol, DFT-s-OFDMA symbol) in the time domain, and may include a plurality of subcarriers in the frequency domain. The signal generator 1060 generates a radio signal from the mapped modulation symbols, and the generated radio signal can be transmitted to other devices through each antenna. To this end, the signal generator 1060 may include an Inverse Fast Fourier Transform (IFFT) module and a Cyclic Prefix (CP) inserter, a Digital-to-Analog Converter (DAC), a frequency uplink converter, etc. .

The signal processing process for the received signal in the wireless device may be configured as the inverse of the signal processing processes 1010 to 1060 of FIG. 20. For example, a wireless device (eg, 100 and 200 in FIG. 19) may receive a wireless signal from the outside through an antenna port / transceiver. The received radio signal may be converted into a baseband signal through a signal restorer. To this end, the signal recoverer may include a frequency downlink converter (ADC), an analog-to-digital converter (ADC), a CP remover, and a Fast Fourier Transform (FFT) module. Thereafter, the baseband signal may be restored to a codeword through a resource de-mapper process, a postcoding process, a demodulation process, and a de-scramble process. The codeword can be restored to the original information block through decoding. Accordingly, the signal processing circuit (not shown) for the received signal may include a signal restorer, a resource de-mapper, a post coder, a demodulator, a de-scrambler and a decoder.

21 shows another example of a wireless device applied to the present invention. The wireless device may be implemented in various forms according to use-example / service (see FIGS. 18, 22 to 27).

Referring to FIG. 21, the wireless devices 100 and 200 correspond to the wireless devices 100 and 200 of FIG. 19, and various elements, components, units / units, and / or modules ). For example, the wireless devices 100 and 200 may include a communication unit 110, a control unit 120, a memory unit 130, and additional elements 140. The communication unit may include a communication circuit 112 and a transceiver (s) 114. For example, the communication circuit 112 can include one or more processors 102,202 and / or one or more memories 104,204 of FIG. For example, the transceiver (s) 114 may include one or more transceivers 106,206 and / or one or more antennas 108,208 of FIG. 19. The control unit 120 is electrically connected to the communication unit 110, the memory unit 130, and the additional element 140, and controls various operations of the wireless device. For example, the controller 120 may control the electrical / mechanical operation of the wireless device based on the program / code / command / information stored in the memory unit 130. In addition, the control unit 120 transmits information stored in the memory unit 130 to the outside (eg, another communication device) through the wireless / wired interface through the communication unit 110, or externally (eg, through the communication unit 110) Information received through a wireless / wired interface from another communication device) may be stored in the memory unit 130.

The additional element 140 may be variously configured according to the type of wireless device. For example, the additional element 140 may include at least one of a power unit / battery, an input / output unit (I / O unit), a driving unit, and a computing unit. Although not limited to this, wireless devices include robots (FIGS. 18, 100A), vehicles (FIGS. 18, 100B-1, 100B-2), XR devices (FIGS. 18, 100C), portable devices (FIGS. 18, 100D), and household appliances. (Fig. 18, 100e), IoT device (Fig. 18, 100f), digital broadcasting terminal, hologram device, public safety device, MTC device, medical device, fintech device (or financial device), security device, climate / environment device, It may be implemented in the form of an AI server / device (FIGS. 18 and 400), a base station (FIGS. 18 and 200), a network node, and the like. The wireless device may be movable or used in a fixed place depending on the use-example / service.

In FIG. 21, various elements, components, units / parts, and / or modules in the wireless devices 100 and 200 may be connected to each other through a wired interface, or at least some of them may be connected wirelessly through the communication unit 110. For example, in the wireless devices 100 and 200, the control unit 120 and the communication unit 110 are connected by wire, and the control unit 120 and the first unit (eg, 130 and 140) are connected through the communication unit 110. It can be connected wirelessly. Further, each element, component, unit / unit, and / or module in the wireless devices 100 and 200 may further include one or more elements. For example, the controller 120 may be composed of one or more processor sets. For example, the control unit 120 may include a set of communication control processor, application processor, electronic control unit (ECU), graphic processing processor, and memory control processor. In another example, the memory unit 130 includes random access memory (RAM), dynamic RAM (DRAM), read only memory (ROM), flash memory, volatile memory, and non-volatile memory (non- volatile memory) and / or combinations thereof.

Hereinafter, the implementation example of FIG. 21 will be described in more detail with reference to the drawings.

22 illustrates a mobile device applied to the present invention. The portable device may include a smart phone, a smart pad, a wearable device (eg, a smart watch, smart glasses), and a portable computer (eg, a notebook). The mobile device may be referred to as a mobile station (MS), a user terminal (UT), a mobile subscriber station (MSS), a subscriber station (SS), an advanced mobile station (AMS), or a wireless terminal (WT).

Referring to FIG. 22, the portable device 100 includes an antenna unit 108, a communication unit 110, a control unit 120, a memory unit 130, a power supply unit 140a, an interface unit 140b, and an input / output unit 140c. ). The antenna unit 108 may be configured as a part of the communication unit 110. Blocks 110 to 130 / 140a to 140c correspond to blocks 110 to 130/140 in FIG. 21, respectively.

The communication unit 110 may transmit and receive signals (eg, data, control signals, etc.) with other wireless devices and base stations. The control unit 120 may perform various operations by controlling components of the portable device 100. The controller 120 may include an application processor (AP). The memory unit 130 may store data / parameters / programs / codes / instructions required for driving the portable device 100. Also, the memory unit 130 may store input / output data / information. The power supply unit 140a supplies power to the portable device 100 and may include a wired / wireless charging circuit, a battery, and the like. The interface unit 140b may support the connection between the mobile device 100 and other external devices. The interface unit 140b may include various ports (eg, audio input / output ports, video input / output ports) for connection with external devices. The input / output unit 140c may receive or output image information / signal, audio information / signal, data, and / or information input from a user. The input / output unit 140c may include a camera, a microphone, a user input unit, a display unit 140d, a speaker, and / or a haptic module.

For example, in the case of data communication, the input / output unit 140c acquires information / signal (eg, touch, text, voice, image, video) input from the user, and the obtained information / signal is transmitted to the memory unit 130 Can be saved. The communication unit 110 may convert information / signals stored in the memory into wireless signals, and transmit the converted wireless signals directly to other wireless devices or to a base station. In addition, after receiving a radio signal from another radio device or a base station, the communication unit 110 may restore the received radio signal to original information / signal. After the restored information / signal is stored in the memory unit 130, it can be output in various forms (eg, text, voice, image, video, heptic) through the input / output unit 140c.

23 illustrates a vehicle or an autonomous vehicle applied to the present invention. Vehicles or autonomous vehicles can be implemented as mobile robots, vehicles, trains, aerial vehicles (AVs), ships, and the like.

Referring to FIG. 23, a vehicle or an autonomous vehicle 100 includes an antenna unit 108, a communication unit 110, a control unit 120, a driving unit 140a, a power supply unit 140b, a sensor unit 140c, and autonomous driving It may include a portion (140d). The antenna unit 108 may be configured as a part of the communication unit 110. Blocks 110/130 / 140a-140d correspond to blocks 110/130/140 in FIG. 21, respectively.

The communication unit 110 may transmit and receive signals (eg, data, control signals, etc.) with external devices such as other vehicles, a base station (e.g. base station, road side unit, etc.) and a server. The controller 120 may perform various operations by controlling elements of the vehicle or the autonomous vehicle 100. The controller 120 may include an electronic control unit (ECU). The driving unit 140a may cause the vehicle or the autonomous vehicle 100 to travel on the ground. The driving unit 140a may include an engine, a motor, a power train, wheels, brakes, and steering devices. The power supply unit 140b supplies power to the vehicle or the autonomous vehicle 100 and may include a wired / wireless charging circuit, a battery, and the like. The sensor unit 140c may obtain vehicle status, surrounding environment information, user information, and the like. The sensor unit 140c includes an inertial measurement unit (IMU) sensor, a collision sensor, a wheel sensor, a speed sensor, an inclination sensor, a weight sensor, a heading sensor, a position module, and a vehicle forward / Reverse sensor, battery sensor, fuel sensor, tire sensor, steering sensor, temperature sensor, humidity sensor, ultrasonic sensor, illumination sensor, pedal position sensor, and the like. The autonomous driving unit 140d maintains a driving lane, automatically adjusts speed, such as adaptive cruise control, and automatically moves along a predetermined route, and automatically sets a route when a destination is set. Technology, etc. can be implemented.

For example, the communication unit 110 may receive map data, traffic information data, and the like from an external server. The autonomous driving unit 140d may generate an autonomous driving route and a driving plan based on the acquired data. The controller 120 may control the driving unit 140a such that the vehicle or the autonomous vehicle 100 moves along the autonomous driving path according to a driving plan (eg, speed / direction adjustment). During autonomous driving, the communication unit 110 may acquire the latest traffic information data non-periodically from an external server, and acquire surrounding traffic information data from nearby vehicles. Also, during autonomous driving, the sensor unit 140c may acquire vehicle status and surrounding environment information. The autonomous driving unit 140d may update the autonomous driving route and driving plan based on newly acquired data / information. The communication unit 110 may transmit information regarding a vehicle location, an autonomous driving route, and a driving plan to an external server. The external server may predict traffic information data in advance using AI technology or the like based on the information collected from the vehicle or autonomous vehicles, and provide the predicted traffic information data to the vehicle or autonomous vehicles.

24 illustrates a vehicle applied to the present invention. Vehicles can also be implemented by means of transport, trains, aircraft, ships, and the like.

Referring to FIG. 24, the vehicle 100 may include a communication unit 110, a control unit 120, a memory unit 130, an input / output unit 140a, and a position measurement unit 140b. Here, blocks 110 to 130 / 140a to 140b correspond to blocks 110 to 130/140 in FIG. 21, respectively.

The communication unit 110 may transmit and receive signals (eg, data, control signals, etc.) with other vehicles or external devices such as a base station. The controller 120 may control various components of the vehicle 100 to perform various operations. The memory unit 130 may store data / parameters / programs / codes / commands supporting various functions of the vehicle 100. The input / output unit 140a may output an AR / VR object based on information in the memory unit 130. The input / output unit 140a may include a HUD. The location measurement unit 140b may acquire location information of the vehicle 100. The location information may include absolute location information of the vehicle 100, location information within the driving line, acceleration information, location information with surrounding vehicles, and the like. The position measuring unit 140b may include GPS and various sensors.

For example, the communication unit 110 of the vehicle 100 may receive map information, traffic information, and the like from an external server and store them in the memory unit 130. The location measurement unit 140b may acquire vehicle location information through GPS and various sensors and store it in the memory unit 130. The controller 120 generates a virtual object based on map information, traffic information, and vehicle location information, and the input / output unit 140a may display the generated virtual object on a window in the vehicle (1410, 1420). In addition, the control unit 120 may determine whether the vehicle 100 is normally operating in the driving line based on the vehicle location information. When the vehicle 100 deviates abnormally from the driving line, the control unit 120 may display a warning on the glass window in the vehicle through the input / output unit 140a. In addition, the control unit 120 may broadcast a warning message about driving abnormalities to nearby vehicles through the communication unit 110. Depending on the situation, the control unit 120 may transmit the location information of the vehicle and the information on the driving / vehicle abnormality to the related organization through the communication unit 110.

25 illustrates an XR device applied to the present invention. The XR device may be implemented as an HMD, a head-up display (HUD) provided in a vehicle, a television, a smart phone, a computer, a wearable device, a home appliance, a digital signage, a vehicle, a robot, and the like.

Referring to FIG. 25, the XR device 100a may include a communication unit 110, a control unit 120, a memory unit 130, an input / output unit 140a, a sensor unit 140b, and a power supply unit 140c. . Here, blocks 110 to 130 / 140a to 140c correspond to blocks 110 to 130/140 in FIG. 21, respectively.

The communication unit 110 may transmit / receive signals (eg, media data, control signals, etc.) with other wireless devices, portable devices, or external devices such as a media server. Media data may include images, images, and sounds. The control unit 120 may perform various operations by controlling the components of the XR device 100a. For example, the controller 120 may be configured to control and / or perform procedures such as video / image acquisition, (video / image) encoding, and metadata creation and processing. The memory unit 130 may store data / parameters / programs / codes / instructions necessary for driving the XR device 100a / creating an XR object. The input / output unit 140a acquires control information, data, and the like from the outside, and may output the generated XR object. The input / output unit 140a may include a camera, a microphone, a user input unit, a display unit, a speaker, and / or a haptic module. The sensor unit 140b may obtain XR device status, surrounding environment information, user information, and the like. The sensor unit 140b may include a proximity sensor, an illuminance sensor, an acceleration sensor, a magnetic sensor, a gyro sensor, an inertial sensor, an RGB sensor, an IR sensor, a fingerprint recognition sensor, an ultrasonic sensor, an optical sensor, a microphone, and / or a radar, etc. have. The power supply unit 140c supplies power to the XR device 100a, and may include a wire / wireless charging circuit, a battery, and the like.

For example, the memory unit 130 of the XR device 100a may include information (eg, data, etc.) necessary for the generation of an XR object (eg, AR / VR / MR object). The input / output unit 140a may obtain a command for operating the XR device 100a from a user, and the control unit 120 may drive the XR device 100a according to a user's driving command. For example, when a user tries to watch a movie, news, etc. through the XR device 100a, the control unit 120 transmits the content request information through the communication unit 130 to another device (eg, the mobile device 100b) or Media server. The communication unit 130 may download / stream content such as movies and news from another device (eg, the mobile device 100b) or a media server to the memory unit 130. The controller 120 controls and / or performs procedures such as video / image acquisition, (video / image) encoding, and metadata creation / processing for content, and is obtained through the input / output unit 140a / sensor unit 140b An XR object may be generated / output based on information about a surrounding space or a real object.

In addition, the XR device 100a is wirelessly connected to the portable device 100b through the communication unit 110, and the operation of the XR device 100a may be controlled by the portable device 100b. For example, the portable device 100b may operate as a controller for the XR device 100a. To this end, the XR device 100a may acquire 3D location information of the portable device 100b, and then generate and output an XR object corresponding to the portable device 100b.

26 illustrates a robot applied to the present invention. Robots can be classified into industrial, medical, household, military, etc. according to the purpose or field of use.

Referring to FIG. 26, the robot 100 may include a communication unit 110, a control unit 120, a memory unit 130, an input / output unit 140a, a sensor unit 140b, and a driving unit 140c. Here, blocks 110 to 130 / 140a to 140c correspond to blocks 110 to 130/140 in FIG. 21, respectively.

The communication unit 110 may transmit and receive signals (eg, driving information, control signals, etc.) with other wireless devices, other robots, or external devices such as a control server. The control unit 120 may control various components of the robot 100 to perform various operations. The memory unit 130 may store data / parameters / programs / codes / commands supporting various functions of the robot 100. The input / output unit 140a obtains information from the outside of the robot 100 and outputs information to the outside of the robot 100. The input / output unit 140a may include a camera, a microphone, a user input unit, a display unit, a speaker, and / or a haptic module. The sensor unit 140b may obtain internal information of the robot 100, surrounding environment information, user information, and the like. The sensor unit 140b may include a proximity sensor, an illuminance sensor, an acceleration sensor, a magnetic sensor, a gyro sensor, an inertial sensor, an IR sensor, a fingerprint recognition sensor, an ultrasonic sensor, an optical sensor, a microphone, and a radar. The driving unit 140c may perform various physical operations such as moving a robot joint. In addition, the driving unit 140c may cause the robot 100 to run on the ground or fly in the air. The driving unit 140c may include an actuator, a motor, a wheel, a brake, a propeller, and the like.

27 illustrates an AI device applied to the present invention. AI devices can be fixed devices or mobile devices, such as TVs, projectors, smartphones, PCs, laptops, digital broadcasting terminals, tablet PCs, wearable devices, set-top boxes (STBs), radios, washing machines, refrigerators, digital signage, robots, vehicles, etc. It can be implemented as possible devices.

Referring to FIG. 27, the AI device 100 includes a communication unit 110, a control unit 120, a memory unit 130, an input / output unit 140a / 140b, a running processor unit 140c, and a sensor unit 140d It may include. Blocks 110 to 130 / 140a to 140d correspond to blocks 110 to 130/140 in FIG. 21, respectively.

The communication unit 110 uses wired / wireless communication technology to communicate with other AI devices (eg, FIGS. 18, 100x, 200, 400) or external devices, such as the AI server 200, wired / wireless signals (eg, sensor information, user input, learning) Model, control signals, etc.). To this end, the communication unit 110 may transmit information in the memory unit 130 to an external device or transmit a signal received from the external device to the memory unit 130.

The controller 120 may determine at least one executable action of the AI device 100 based on information determined or generated using a data analysis algorithm or a machine learning algorithm. Then, the control unit 120 may control the components of the AI device 100 to perform the determined operation. For example, the controller 120 may request, search, receive, or utilize data of the learning processor unit 140c or the memory unit 130, and may be determined to be a predicted operation or desirable among at least one executable operation. Components of the AI device 100 may be controlled to perform an operation. In addition, the control unit 120 collects history information including the user's feedback on the operation content or operation of the AI device 100 and stores it in the memory unit 130 or the running processor unit 140c, or the AI server ( 18, 400). The collected history information can be used to update the learning model.

The memory unit 130 may store data supporting various functions of the AI device 100. For example, the memory unit 130 may store data obtained from the input unit 140a, data obtained from the communication unit 110, output data from the running processor unit 140c, and data obtained from the sensing unit 140. In addition, the memory unit 130 may store control information and / or software code necessary for operation / execution of the control unit 120.

The input unit 140a may acquire various types of data from the outside of the AI device 100. For example, the input unit 120 may acquire training data for model training and input data to which the training model is applied. The input unit 140a may include a camera, a microphone, and / or a user input unit. The output unit 140b may generate output related to vision, hearing, or touch. The output unit 140b may include a display unit, a speaker, and / or a haptic module. The sensing unit 140 may obtain at least one of internal information of the AI device 100, environment information of the AI device 100, and user information using various sensors. The sensing unit 140 may include a proximity sensor, an illuminance sensor, an acceleration sensor, a magnetic sensor, a gyro sensor, an inertial sensor, an RGB sensor, an IR sensor, a fingerprint recognition sensor, an ultrasonic sensor, an optical sensor, a microphone, and / or a radar, etc. have.

The learning processor unit 140c may train a model composed of artificial neural networks using the training data. The learning processor unit 140c may perform AI processing together with the learning processor unit of the AI server (FIGS. 18 and 400). The learning processor unit 140c may process information received from an external device through the communication unit 110 and / or information stored in the memory unit 130. Further, the output value of the running processor unit 140c may be transmitted to an external device through the communication unit 110 and / or stored in the memory unit 130.

Claims (15)

1. In a method for performing communication by a first terminal in a wireless communication system,

   Receiving information on a first resource pool and information on a second resource pool from a base station;

   Based on the radio resource control (RRC) state of the first terminal and whether or not the first terminal is included in the coverage of the base station, a resource pool for a side link among the first resource pool or the second resource pool is determined. To do; And

   And transmitting information on the resource pool for the sidelink to a second terminal.
2. According to claim 1,

   The first resource pool includes only one or more uplink symbols configured as semi-static, and

   The second resource pool includes one or more uplink symbols and one or more flexible symbols set semi-statically.
3. According to claim 2,

   When the first terminal is not included in the coverage of the base station, the first resource pool is determined as a resource pool for the sidelink.
4. According to claim 2,

   When the RRC state of the first terminal included in the coverage of the base station is an RRC-idle state, the first resource pool is determined as a resource pool for the sidelink.
5. According to claim 2,

   When the RRC state of the first terminal included in the coverage of the base station is an RRC-connected state, the second resource pool is determined as a resource pool for the sidelink.
6. According to claim 1,

   The first resource pool and the second resource pool are resource pools for sidelink transmission.
7. According to claim 1,

   Further comprising the step of receiving information on the third resource pool (third resource pool) from the base station;

   The third resource pool is a resource pool for sidelink reception,

   The third resource pool includes one or more uplink symbols and one or more flexible symbols set semi-statically.
8. The method of claim 7,

   The information on the resource pool for the sidelink includes at least one of information on the first resource pool, information on the second resource pool, or information on the third resource pool.
9. According to claim 1,

   The information on the resource pool for the sidelink is information on whether the resource pool for the sidelink includes only semi-fixed uplink symbols or semi-fixed uplink symbols and flexible symbols.
10. According to claim 1,

    The information on the resource pool for the sidelink includes at least one of information on the RRC state of the first terminal or whether the first terminal is included in the coverage of the base station.
11. According to claim 1,

    Wherein the first resource pool is a subset of the second resource pool.
12. According to claim 1,

    The first resource pool is a resource pool for the sidelink associated with a control channel, and

    The second resource pool is the sidelink resource pool associated with the data channel.
13. The method of claim 11,

    And transmitting information on the second resource pool associated with the data channel to the second terminal.
14. According to claim 1,

    The information on the resource pool for the sidelink is characterized in that it is transmitted through at least one of a physical sidelink control channel (PSCCH), a physical sidelink shared channel (PSSCH) or a physical sidelink broadcast channel (PSBCH).
15. In the first terminal for performing communication in a wireless communication system,

    One or more memories; One or more transceivers; And

    And one or more processors connecting the one or more memories and the one or more transceivers, wherein the one or more processors

    The transceiver is controlled to receive information on a first resource pool and information on a second resource pool from a base station,

    Based on the radio resource control (RRC) state of the first terminal and whether or not the first terminal is included in the coverage of the base station, a resource pool for a side link among the first resource pool or the second resource pool is determined. And

    The first terminal, characterized in that configured to control the transceiver to transmit information on the resource pool for the sidelink to a second terminal.

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