Apparatus and method for handling transmission conflicts in a wireless communication system

Abstract

The present disclosure relates to a fifth generation (5G) or quasi-5G communication system for supporting a higher data transmission rate following a fourth generation (4G) system such as long term evolution (LTE). A method for operating a terminal in a wireless communication system, the method comprising: identifying a priority between uplink (UL) data and sidelink data; if the terminal cannot transmit UL data and sidelink data at the same time, transmitting only first data, wherein the first data is data with a higher priority between the UL data and the sidelink data; and if the total transmission power of the UL data and the sidelink data exceeds the maximum output power, transmitting both the first data and the second data at a transmission power identified based on the maximum output power, wherein the second data is data with a lower priority between the UL data and the sidelink data.

Description

Technical Field

[0001] The present disclosure relates generally to wireless communication systems, and more particularly, to apparatus and methods for handling transmission collisions in wireless communication systems. Background Art

[0002] In order to meet the growing demand for wireless data services since the deployment of the 4th generation (4G) communication system, efforts have been made to develop an improved 5th generation (5G) or quasi-5G communication system. Therefore, the 5G or quasi-5G communication system is also called "beyond 4G network" or "post-long term evolution (LTE) system".

[0003] 5G communication systems are considered to be implemented in higher frequency (millimeter wave (mmWave)) bands (e.g., 28 gigahertz (GHz) or 60 GHz bands) to achieve higher data rates. In order to reduce the propagation loss of radio waves and increase the transmission distance, beamforming, massive multiple-input multiple-output (MIMO), full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, and massive antenna technology are discussed in 5G communication systems.

[0004] In addition, in 5G communication systems, development of improved system networks based on advanced small cells, cloud radio access networks (RAN), ultra-dense networks, device-to-device (D2D) communication, wireless backhaul, mobile networks, collaborative communications, coordinated multi-point (CoMP), and receiving-end interference cancellation is underway.

[0005] In the 5G system, hybrid frequency shift keying (FSK), quadrature amplitude modulation (FQAM), sliding window superposition coding (SWSC) as advanced coding modulation (ACM), filter bank multi-carrier (FBMC) technology, non-orthogonal multiple access (NOMA) technology and sparse code multiple access (SCMA) as advanced access technologies have been developed.

[0006] In addition, vehicle communication (vehicle-to-everything) (hereinafter referred to as "V2X") using the 5G communication system is being developed, and it is expected to provide various services to users using V2X. Summary of the invention

[0007] [Technical solution]

[0008] The present disclosure is to solve the above-mentioned problems and disadvantages, and to provide at least the advantages described below.

[0009] According to one aspect of the present disclosure, a method for operating a terminal in a wireless communication system includes: identifying the priority between uplink (UL) data and sidelink data; if the terminal cannot transmit UL data and sidelink data at the same time, only transmitting first data, wherein the first data is data with a higher priority between the UL data and the sidelink data; and if the total transmission power of the UL data and the sidelink data exceeds the maximum output power, transmitting both the first data and the second data at a transmission power identified based on the maximum output power, wherein the transmission power is identified based on the maximum output power, wherein the second data is data with a lower priority between the UL data and the sidelink data.

[0010] According to another aspect of the present disclosure, a terminal in a wireless communication system includes a transmitter and a processor. The processor is configured to: identify the priority between UL data and sidelink data; use the transmitter to transmit first data, wherein the first data is data with a higher priority between the UL data and the sidelink data; and if the terminal cannot transmit UL data and sidelink data at the same time, only transmit the first data, wherein the first data is data with a higher priority between the UL data and the sidelink data; and if the total transmission power of the UL data and the sidelink data exceeds the maximum output power, transmit both the first data and the second data at a transmission power identified based on the maximum output power, wherein the second data is data with a lower priority between the UL data and the sidelink data.

[0011] [Beneficial Effects of the Invention]

[0012] The present disclosure provides an apparatus and method for determining data transmission priority between UL transmission and sidelink transmission in a wireless communication system.

[0013] In addition, the present disclosure provides an apparatus and method for configuring data transmission priority between UL transmission and sidelink transmission in a wireless communication system.

[0014] The apparatus and method according to the embodiments can effectively avoid conflicts (eg, interference) between transmissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and other aspects, features and advantages of certain embodiments of the present disclosure will become more apparent through the following description in conjunction with the accompanying drawings, in which:

[0016] Figure 1 A wireless communication system according to an embodiment is shown;

[0017] Figure 2 shows a configuration of a base station in a wireless communication system according to an embodiment;

[0018] Figure 3 shows a configuration of a terminal in a wireless communication system according to an embodiment;

[0019] Figure 4 shows a configuration of a communication unit in a wireless communication system according to an embodiment;

[0020] Figure 5 The structure of radio time-frequency resources in a wireless communication system according to an embodiment is shown;

[0021] Fig. 6A An example of a scenario for sidelink communication in a wireless communication system according to an embodiment is shown;

[0022] Figure 6B An example of a scenario for sidelink communication in a wireless communication system according to an embodiment is shown;

[0023] Figure 6C An example of a scenario for sidelink communication in a wireless communication system according to an embodiment is shown;

[0024] Fig.6D An example of a scenario for sidelink communication in a wireless communication system according to an embodiment is shown;

[0025] Fig. 7A An example of a transmission method for sidelink communication in a wireless communication system according to an embodiment is shown;

[0026] Figure 7B An example of a transmission method for sidelink communication in a wireless communication system according to an embodiment is shown;

[0027] Fig. 8A A combination of data transmitted via UL or sidelink in a wireless communication system according to an embodiment is shown;

[0028] Figure 8B A combination of data transmitted via UL or sidelink in a wireless communication system according to an embodiment is shown;

[0029] Figure 8C A combination of data transmitted via UL or sidelink in a wireless communication system according to an embodiment is shown;

[0030] Fig.8D A combination of data transmitted via UL or sidelink in a wireless communication system according to an embodiment is shown;

[0031] Fig. 8E A combination of data transmitted via UL or sidelink in a wireless communication system according to an embodiment is shown;

[0032] Figure 8F A combination of data transmitted via UL or sidelink in a wireless communication system according to an embodiment is shown;

[0033] Figure 8G A combination of data transmitted via UL or sidelink in a wireless communication system according to an embodiment is shown;

[0034] Fig. 9A A flow chart showing a terminal in a wireless communication system transmitting data according to a priority level according to an embodiment;

[0035] Fig. 9B A flow chart showing a terminal in a wireless communication system transmitting data according to a priority level according to an embodiment;

[0036] Fig. 10A A flow chart showing a terminal in a wireless communication system determining a priority between UL data and sidelink data according to an embodiment;

[0037] Fig. 10B A flow chart showing a terminal in a wireless communication system determining a priority between UL data and sidelink data according to an embodiment;

[0038] Fig. 10C A flow chart showing a terminal in a wireless communication system determining a priority between UL data and sidelink data according to an embodiment;

[0039] Fig. 10D A flow chart showing a terminal in a wireless communication system determining a priority between UL data and sidelink data according to an embodiment;

[0040] Fig.10E A flow chart showing a terminal in a wireless communication system determining a priority between UL data and sidelink data according to an embodiment;

[0041] Fig.11A A flow chart showing a terminal in a wireless communication system determining a priority between UL data and sidelink data according to an embodiment;

[0042] Fig. 11B A flow chart showing a terminal in a wireless communication system determining a priority between UL data and sidelink data according to an embodiment;

[0043] Fig. 11C A flow chart showing a terminal in a wireless communication system determining a priority between UL data and sidelink data according to an embodiment;

[0044] Fig.11DA flow chart showing a terminal in a wireless communication system determining a priority between UL data and sidelink data according to an embodiment;

[0045] Fig. 12A A flow chart showing a terminal in a wireless communication system determining a priority between UL data and sidelink data according to an embodiment;

[0046] Fig. 12B A flow chart showing a terminal in a wireless communication system determining a priority between UL data and sidelink data according to an embodiment;

[0047] Fig.13A A flow chart showing a terminal in a wireless communication system determining a priority between UL data and sidelink data according to an embodiment;

[0048] Fig. 13B A flow chart showing a terminal in a wireless communication system determining a priority between UL data and sidelink data according to an embodiment;

[0049] Fig.14A A flow chart showing a terminal in a wireless communication system according to an embodiment after determining a priority between UL data and sidelink data; and

[0050] Fig. 14B A flow chart is shown after a terminal determines a priority between UL data and sidelink data according to an embodiment. DETAILED DESCRIPTION

[0051] The present disclosure provides an apparatus and method for determining data transmission priority between UL transmission and sidelink transmission in a wireless communication system.

[0052] In addition, the present disclosure provides an apparatus and method for configuring data transmission priority between UL transmission and sidelink transmission in a wireless communication system.

[0053] The apparatus and method according to the embodiments can effectively avoid conflicts (eg, interference) between transmissions.

[0054] The terms used herein are only intended to describe specific embodiments, and are not intended to limit the scope of other embodiments. Unless otherwise clearly stated in the context, singular expressions may include plural expressions. The terms used herein (including technical or scientific terms) may have the same meanings as those generally understood by those skilled in the art to which the present disclosure belongs. In the terms used herein, the terms defined in general dictionaries may be interpreted as having the same or similar meanings in the context of the relevant art, and unless clearly defined in the present disclosure, otherwise should not be interpreted as having ideal or too formal meanings. In some cases, even if defined herein, the terms should not be interpreted as excluding embodiments.

[0055] Hereinafter, examples will be described in the embodiments in a hardware-based method. However, the embodiments cover techniques using both hardware and software, and therefore, the embodiments are not intended to exclude software-based methods.

[0056] The following disclosure relates to an apparatus and method for selecting resources in a wireless communication system. Specifically, the disclosure is intended to select a transmission resource of a terminal from a sidelink communication between terminals. The disclosure relates to a method and apparatus for selecting at least one resource pool for performing communication when multiple resource pools are configured for sidelink communication.

[0057] Hereinafter, for the sake of convenience of explanation, the terms related to signals, the terms related to channels, the terms related to control information, the terms related to network entities, and the terms related to elements of devices used herein will be used as examples. Therefore, the present disclosure is not limited to the terms used herein, and other terms with equivalent technical meanings may be used.

[0058] In the following description, physical channels and signals may be used interchangeably with data or control signals. For example, although the physical downlink shared channel (PDSCH) indicates a physical channel through which data is transmitted, the PDSCH may also be used to indicate data. That is, the expression "transmission physical channel" may be interpreted as "transmission of data or signals through a physical channel".

[0059] In the following description, high-layer signaling indicates a method of transmitting a signal from a base station to a terminal using a DL data channel in a physical layer or transmitting a signal from a terminal to a base station using a UL data channel in a physical layer. High-layer signaling may also be understood as radio resource control (RRC) signaling or media access control (MAC) control element (CE).

[0060] In addition, although the expression "more than" or "less than" may be used herein to determine whether a specific condition is satisfied or achieved, this is merely for the purpose of describing an example, and does not exclude the expression "equal to or greater than", "equal to or less than", "greater than or equal to", or "less than or equal to". The expression "equal to or greater than" may be replaced with "more than", and the expression "equal to or less than" may be replaced with "less than".

[0061] In addition, in the present disclosure, although the embodiments will be described using terms used in a specific communication standard (eg, 3rd Generation Partnership Project (3GPP)), this is merely an example for explanation. The embodiments can also be easily modified and applied to other communication systems.

[0062] Figure 1 A wireless communication system according to an embodiment is shown.

[0063] Figure 1 The base station 110, the first terminal 120 and the second terminal 130 are shown as some nodes using a wireless channel in the wireless communication system. Figure 1 A single base station is shown in FIG. 1 , but other base stations that are the same as or similar to base station 110 may also be included.

[0064] The base station 110 is a network infrastructure that provides wireless access to the first terminal 120 and the second terminal 130. The base station 110 has a coverage area defined as a specific geographical area based on the distance of the signal that can be transmitted therethrough. The base station 110 may be referred to as an access point (AP), an eNodeB (eNB), a 5G node, a next generation nodeB (gNB), a wireless point, a transmission / reception point (TRP), or other terms having equivalent technical meanings.

[0065] Each of the first terminal 120 and the second terminal 130 is a device used by a user, and communicates with the base station 110 through a wireless channel. The link from the base station 110 to the first terminal 120 and the second terminal 130 is called DL (DL), and the link from the first terminal 120 and the second terminal 130 to the base station 110 is called UL. In addition, the first terminal 120 and the second terminal 130 can communicate with each other through a wireless channel. In this case, the link between the first terminal 120 and the second terminal 130 is called a side link, and the side link can be used interchangeably with the PC5 interface. In some cases, at least one of the first terminal 120 and the second terminal 130 can be operated without user intervention. That is, at least one of the first terminal 120 and the second terminal 130 can be a device for performing machine type communication (MTC) and may not be carried by the user. Each of the first terminal 120 and the second terminal 130 can be referred to as a terminal, a user equipment (UE), a mobile station, a subscriber station, a remote terminal, a wireless terminal, a user equipment, or other terms with equivalent technical meanings.

[0066] The base station 110, the first terminal 120, and the second terminal 130 may transmit and receive radio signals in a millimeter wave frequency band (e.g., 28 GHz, 30 GHz, 38 GHz, or 60 GHz). In this case, in order to improve the channel gain, the base station 110, the first terminal 120, and the second terminal 130 may perform beamforming. Here, beamforming may include transmit beamforming and receive beamforming. That is, the base station 110, the first terminal 120, and the second terminal 130 may provide directionality to the transmitted signal or the received signal. To this end, the base station 110 and the first terminal 120 and the second terminal 130 may select service beams 112, 113, 121, and 131 through a beam search or beam management process. After selecting the service beams 112, 113, 121, and 131, subsequent communications may be performed through resources having a quasi-colocation (QCL) relationship with resources transmitting the service beams 112, 113, 121, and 131.

[0067] If the long-range characteristic of the channel through which the symbol is transmitted in the first antenna port can be inferred from the channel through which the symbol is transmitted in the second antenna port, the first antenna port and the second antenna port may be considered to be in a QCL relationship. For example, the long-range characteristic may include at least one of delay spread, Doppler spread, Doppler shift, average gain, average delay, and spatial receiver parameters.

[0068] Figure 1The first terminal 120 and the second terminal 130 shown can support vehicle communication. In the case of vehicle communication, in the LTE system, the standardization of V2X technology has been completed based on the device-to-device (D2D) communication structure in 3GPP Release 14 and Release 15, and efforts are being made to develop V2X technology based on 5G NR. NR V2X is expected to support unicast communication, groupcast (or multicast) communication, and broadcast communication between terminals. In addition, unlike LTE V2X, which aims to send or receive basic safety information required for vehicle road driving, NR V2X aims to provide more advanced services such as vehicle platooning, advanced driving, extended sensors, and remote driving.

[0069] V2X services can be divided into basic safety services and advanced services. Basic safety services may include detailed services such as left turn awareness service, front vehicle collision warning service, emergency vehicle approach awareness service, front obstacle warning service and intersection traffic light information service, as well as collaborative awareness message (CAM) service or basic safety message (BSM) service, and may use broadcast, unicast or multicast transmission methods to send and receive V2X information. In addition to the broadcast transmission method, advanced services require methods that can use unicast and multicast transmission methods to send and receive V2X information, as well as more enhanced quality of service (QoS) requirements than basic safety services to send and receive V2X information within a specific vehicle group or between two vehicles. Advanced services may include detailed services such as cluster driving services, autonomous driving services, remotely controlled driving services and sensor-based extended V2X services.

[0070] In the following, "sidelink" refers to the signal transmission / reception path between terminals and can be used interchangeably with the PC5 interface. In the following, a base station is an entity that performs resource allocation to a terminal, and can support V2X communication and conventional cellular communication, or can only support V2X communication. That is, the base station can be an NR base station (e.g., gNB), an LTE base station (e.g., eNB), or a road terminal unit (RSU). In addition to conventional user equipment and mobile stations, terminals may include vehicles supporting vehicle-to-vehicle (V2V) communication, vehicles supporting vehicle-to-pedestrian (V2P) communication or pedestrian mobile phones (i.e., smart phones), vehicles supporting vehicle-to-network (V2N) communication, vehicles supporting vehicle-to-infrastructure (V2I) communication, RSUs equipped with terminal functions, RSUs equipped with base station functions, and RSUs equipped with some base station functions and some terminal functions. In addition, the "V2X terminal" used in the following description may be referred to as a "terminal". That is, the terminal can be used as a V2X terminal related to V2X communication.

[0071] The base station is connected to the terminal through a Uu interface. "UL" indicates a radio link through which the terminal sends data or a control signal to the base station, and "DL" indicates a radio link through which the base station sends data or a control signal to the terminal.

[0072] Figure 2 A configuration of a base station in a wireless communication system according to an embodiment is shown. Figure 2 The illustrated configuration may be regarded as the configuration of the base station 110. Hereinafter, the terms "unit", "component" or "device" indicate a unit for processing at least one function or operation and may be implemented as hardware, software or a combination thereof.

[0073] refer to Figure 2 , the base station includes a wireless communication unit 210, a backhaul communication unit 220, a storage device 230 and a controller 240.

[0074] The wireless communication unit 210 performs the function of sending and receiving signals via a wireless channel. For example, the wireless communication unit 210 performs the conversion function between the baseband signal and the bit stream according to the physical layer standard of the system. For example, when sending data, the wireless communication unit 210 generates complex symbols by encoding and modulating the transmission bit stream. In addition, when receiving data, the wireless communication unit 210 recovers the received bit stream by demodulating and decoding the baseband signal.

[0075] In addition, the wireless communication unit 210 up-converts the baseband signal to a radio frequency (RF) band signal to be transmitted via an antenna, and down-converts the RF band signal received via the antenna to a baseband signal. To this end, the wireless communication unit 210 may include a transmission filter, a reception filter, an amplifier, a mixer, an oscillator, a digital-to-analog converter (DAC), and an analog-to-digital converter (ADC). In addition, the wireless communication unit 210 may include multiple transmission / reception paths. In addition, the wireless communication unit 210 may include at least one antenna array including multiple antenna elements.

[0076] In terms of hardware, the wireless communication unit 210 may include a digital unit and an analog unit, and depending on the operating power or operating frequency analog, the unit may include multiple sub-units. The digital unit may be implemented as at least one processor (eg, a digital signal processor (DSP)).

[0077] As described above, the wireless communication unit 210 transmits and receives signals. Therefore, all or part of the wireless communication unit 210 may be referred to as a "transmitter," "receiver," or "transceiver." In the following description, transmission and reception performed via a wireless channel will have a meaning covering the processing performed by the wireless communication unit 210 as described above.

[0078] The backhaul communication unit 220 provides an interface for communicating with other nodes in the network. That is, the backhaul communication unit 220 converts a bit stream sent from the base station to another node (such as another access node, another base station, an upper node or a core network) into a physical signal, and converts a physical signal received from another node into a bit stream.

[0079] The storage device 230 stores data such as basic programs, applications, and configuration information for the operation of the base station. The storage device 230 may be configured as a volatile memory, a non-volatile memory, or a combination thereof. In addition, the storage device 230 provides the stored data in response to a request from the controller 240.

[0080] The controller 240 controls the overall operation of the base station. For example, the controller 240 sends and receives signals via the wireless communication unit 210 or the backhaul communication unit 220. The controller 240 writes data to the storage device 230 or reads data from the storage device. In addition, the controller 240 may perform the functions of the protocol stack required by the communication standard. The protocol stack may be included in the wireless communication unit 210. To this end, the controller 240 may include at least one processor. According to the following embodiments, the controller 240 may control the base station to perform operations.

[0081] Figure 3 A configuration of a terminal in a wireless communication system according to an embodiment is shown. Figure 3 The illustrated configuration may be regarded as the configuration of the terminal 120. Hereinafter, the terms "unit", "component" or "device" refer to a unit for processing at least one function or operation and may be implemented by hardware, software or a combination thereof.

[0082] refer to Figure 3 , the terminal includes a communication unit 310, a storage device 320 and a controller 330.

[0083] The communication unit 310 performs the function of sending and receiving signals via a wireless channel. For example, the communication unit 310 performs the conversion function between the baseband signal and the bit stream according to the physical layer standard of the system. For example, when sending data, the communication unit 310 generates complex symbols by encoding and modulating the transmission bit stream. In addition, when receiving data, the communication unit 310 recovers the received bit stream by demodulating and decoding the baseband signal. In addition, the communication unit 310 up-converts the baseband signal to an RF band signal to be sent via an antenna, and down-converts the RF band signal received via the antenna to a baseband signal. For example, the communication unit 310 may include a transmission filter, a reception filter, an amplifier, a mixer, an oscillator, a digital-to-analog converter DAC, and an analog-to-digital converter ADC.

[0084] In addition, the communication unit 310 may include multiple transmit / receive paths. In addition, the communication unit 310 may include at least one antenna array including multiple antenna elements. In terms of hardware, the communication unit 310 may include digital circuits and analog circuits (e.g., radio frequency integrated circuits (RFIC)). The digital circuits and analog circuits may be implemented as a single package. In addition, the communication unit 310 may include multiple RF chains. In addition, the communication unit 310 may perform beamforming.

[0085] As described above, the communication unit 310 transmits and receives signals. Therefore, all or part of the communication unit 310 may be referred to as a "transmitter," "receiver," or "transceiver." In the following description, transmission and reception performed via a wireless channel will have a meaning covering the processing performed by the communication unit 310 as described above.

[0086] The storage device 320 stores data such as basic programs and applications for terminal operation, and data such as configuration information. The storage device 320 can be configured as a volatile memory, a non-volatile memory, or a combination thereof. In addition, the storage device 320 provides the stored data in response to a request from the controller 330.

[0087] The controller 330 controls the overall operation of the terminal. For example, the controller 330 sends and receives signals via the communication unit 310. In addition, the controller 330 writes data to the storage device 320 or reads data from the storage device. The controller 330 also performs the functions of the protocol stack required by the communication standard. To this end, the controller 330 may include at least one processor or microprocessor, or may be a part of a processor. In addition, the communication unit 310 and a part of the controller 330 may be referred to as a communication processor. According to the following embodiments, the controller 330 may control the terminal to perform operations.

[0088] Figure 4 A configuration of a communication unit in a wireless communication system according to an embodiment is shown. Figure 4 Elements for performing beamforming as part of a wireless communication unit are shown.

[0089] refer to Figure 4 , the wireless communication unit 410 includes an encoder / modulator 402 , a digital beamformer 404 , a plurality of transmission paths 406 - 1 to 406 -N, and an analog beamformer 408 .

[0090] The encoder / modulator 402 performs channel coding. For channel coding, at least one of a low density parity check (LDPC) code, a convolutional code, and a polar code may be used. The encoder / modulator 402 performs constellation mapping, thereby generating modulation symbols.

[0091] The digital beamformer 404 performs beamforming on a digital signal (e.g., a modulation symbol). To this end, the digital beamformer 404 multiplies the modulation symbol by a beamforming weight. Here, the beamforming weight may be used to change the amplitude and phase of the signal, and may be referred to as a "precoding matrix" or a "precoder". The digital beamformer 404 outputs the digitally beamformed modulation symbol to a plurality of transmission paths 406-1 to 406-N. In this case, the modulation symbol may be multiplexed, or the same modulation symbol may be provided to a plurality of transmission paths 406-1 to 406-N, according to the MIMO transmission scheme.

[0092] Multiple transmission paths 406-1 to 406-N convert the digital signal of digital beamforming into an analog signal. To this end, each of the multiple transmission paths 406-1 to 406-N may include an inverse fast Fourier transform (IFFT) operator, a cyclic prefix (CP) inserter, a DAC and an up-converter. The CP inserter is intended to be used for an orthogonal frequency division multiplexing (OFDM) scheme, and may not include a CP inserter when other physical layer schemes (such as filter bank multi-carrier (FBMC)) are applied. In other words, multiple transmission paths 406-1 to 406-N provide independent signal processing processes for multiple streams generated by digital beamforming. However, depending on the implementation, some elements in multiple transmission paths 406-1 to 406-N may be shared.

[0093] The analog beamformer 408 performs beamforming on the analog signal. To this end, the analog beamformer 408 multiplies the analog symbol by the beamforming weight. Here, the beamforming weight is used to change the amplitude and phase of the signal. Specifically, the analog beamformer 408 can be configured in various ways depending on the connection structure between the multiple transmission paths 406-1 to 406-N and the antenna. For example, each of the multiple transmission paths 406-1 to 406-N can be connected to an antenna array, or the multiple transmission paths 406-1 to 406-N can be connected to an antenna array. Additionally or alternatively, the multiple transmission paths 406-1 to 406-N can be adaptively connected to an antenna array or two or more antenna arrays.

[0094] Figure 5 The structure of radio time-frequency resources in a wireless communication system according to an embodiment is shown.

[0095] refer to Figure 5 , in the radio resource domain, the horizontal axis represents the time domain, and the vertical axis represents the frequency domain. The minimum transmission unit in the time domain is an OFDM symbol or a discrete Fourier transform spread (DFT-S)-OFDM symbol, and N symbOFDM symbols or DFT-S-OFDM symbols 530 are included in one time slot 505. Unlike a time slot, the length of a subframe in the NR system may be defined as 1.0 milliseconds (ms), and the length of a radio frame 500 may be defined as 10 ms. The minimum transmission unit in the frequency domain is a subcarrier, and the entire system transmission bandwidth may include a total of N BW subcarriers 525. N may be variably applied depending on the system. symb and N BW The specific value of .

[0096] The basic unit in the time-frequency resource domain is a resource element (RE) 510, which can be indicated by an OFDM symbol index or a DFT-S-OFDM symbol index and a subcarrier index. A resource block (RB) 515 can be represented by N in the frequency domain. RB The minimum transmission unit of data is generally an RB unit. In the NR system, generally, N symb =14 and N RB =12.

[0097] Figure 5 The structure of the radio time-frequency resources shown is applicable to the Uu interface. Figure 5 The structure of the radio time-frequency resources shown can be applied in a similar manner to the sidelink.

[0098] Fig. 6A An example of a scenario for sidelink communication in a wireless communication system according to an embodiment is shown. Figure 6B An example of a scenario for sidelink communication in a wireless communication system according to an embodiment is shown. Figure 6C An example of a scenario for sidelink communication in a wireless communication system according to an embodiment is shown. Fig.6D An example of a scenario for sidelink communication in a wireless communication system according to an embodiment is shown.

[0099] Fig. 6A 1 shows a coverage scenario, where the first side link terminal 620a and the second side link terminal 620b are located within the coverage of the base station 610. The first side link terminal 620a and the second side link terminal 620b can receive data and control information from the base station 610 via DL, or can send data and control information to the base station via UL. In this case, the data and control information can be used for side link communication, or can be used for cellular communication without being used for side link communication. In addition, in Fig. 6A In the embodiment, the first sidelink terminal 620a and the second sidelink terminal 620b can send and receive data and control information through the sidelink to perform sidelink communication.

[0100] Figure 6BA partial coverage is shown, in which a first side link terminal 620a among the side link terminals is located within the coverage of the base station 610, and a second side link terminal 620b among the side link terminals is located outside the coverage of the base station 610. The first side link terminal 620a located within the coverage of the base station 610 can receive data and control information from the base station via DL, or can send data and control information to the base station via UL. The second side link terminal 620b located outside the coverage of the base station 610 cannot receive data and control information from the base station via DL, and cannot send data and control information to the base station via UL. The second side link terminal 620b can send data and control information to the first terminal 610a via a side link and receive data and control information from the first terminal 610a for side link communication.

[0101] Figure 6C An example is shown in which a sidelink terminal (e.g., a first sidelink terminal 620a and a second sidelink terminal 620b) is located outside the coverage of the base station 610. Therefore, the first sidelink terminal 620a and the second sidelink terminal 620b cannot receive data and control information from the base station through DL, and cannot send data and control information to the base station through UL. The first sidelink terminal 620a and the second sidelink terminal 620b can send and receive data and control information through the sidelink for sidelink communication.

[0102] Fig.6D The case of performing inter-cell sidelink communication is shown, wherein the first sidelink terminal 620a and the second sidelink terminal 620b performing the sidelink communication are in a connection state (e.g., RRC connection state) with different base stations (e.g., the first base station 610a and the second base station 610b) or are camping on different base stations (e.g., RRC connection release state, that is, RRC idle state). In this case, the first terminal 620a can be a sidelink transmitting terminal, and the second terminal 620b can be a sidelink receiving terminal. Alternatively, the first terminal 620a can be a sidelink receiving terminal, and the second terminal 620b can be a sidelink transmitting terminal. The first terminal 620a can receive a system information block (SIB) dedicated to the sidelink from the base station 610a to which the first terminal 620a has accessed (or the first terminal 620a is camping), and the second terminal 620b can receive the SIB dedicated to the sidelink from another base station 610b to which the second terminal 620b has accessed (or the second terminal 620b is camping). In this case, information of the SIB dedicated to the sidelink received by the first terminal 620a may be different from information of the SIB dedicated to the sidelink received by the second terminal 620b. Therefore, it is necessary to unify information for sidelink communication between terminals located in different cells.

[0103] Although for ease of description, FIG. 6A to FIG. 6D An example of a sidelink system configured with two terminals (e.g., a first sidelink terminal 620a and a second sidelink terminal 620b) is described in the example, but the present disclosure is not limited thereto and may be applied to a sidelink system in which two or more terminals participate. In addition, the UL or DL ​​between the base station 610 and the sidelink terminal may be referred to as a "Uu interface", and the sidelink between the sidelink terminals may be referred to as a "PC-5 interface". In the following description, UL, DL, Uu interface, sidelink, and PC-5 may be used interchangeably.

[0104] Meanwhile, in the present disclosure, a terminal may indicate a vehicle supporting V2V communication, a vehicle supporting V2P communication or a pedestrian mobile phone (e.g., a smart phone), a vehicle supporting V2N communication, or a vehicle supporting V2I communication. In addition, in the present disclosure, a terminal may indicate an RSU equipped with a terminal function, an RSU equipped with a base station function, or an RSU equipped with some base station functions and some terminal functions.

[0105] Fig. 7A An example of a transmission method for sidelink communication in a wireless communication system according to an embodiment is shown. Figure 7B An example of a transmission method for sidelink communication in a wireless communication system according to an embodiment is shown. Fig. 7A The unicast method is shown, and Figure 7B A multicast method is shown.

[0106] like Fig. 7A As shown, the transmitting terminal 720a and the receiving terminal 720b can perform one-to-one communication. Fig. 7A The transmission method shown may be referred to as "unicast communication". Figure 7B As shown, the first transmitting terminal 720a or the second transmitting terminal 720d and the first receiving terminal 720b, the second receiving terminal 720c, the third receiving terminal 720e, the fourth receiving terminal 720f and the fifth receiving terminal 720g can perform one-to-many communication. Figure 7B The transmission method shown may be referred to as "groupcast communication" or "multicast communication". Figure 7B In the embodiment, the first transmitting terminal 720a, the first receiving terminal 720b and the second receiving terminal 720c constitute a group and perform multicast communication, and the second transmitting terminal 720d, the third receiving terminal 720e, the fourth receiving terminal 720f and the fifth receiving terminal 720g constitute another group and perform multicast communication. The terminal can perform multicast communication within the group to which it belongs, and can perform unicast, multicast or broadcast communication with at least one other terminal belonging to a different group. Although in Figure 7B Two groups are shown in , but the present disclosure is not limited thereto and is applicable to a case where a greater number of groups are configured.

[0107] The sidelink terminal may perform broadcast communication. Broadcast communication refers to a method in which all sidelink terminals receive data and control information transmitted by the sidelink terminal through the sidelink. For example, if the first transmitting terminal 720a is Figure 7B If the transmitting terminal is the first terminal 720a, the remaining terminals can receive the data and control information sent from the first terminal 720a.

[0108] The above-mentioned sidelink unicast communication, multicast communication and broadcast communication can be supported by scenarios within the coverage area, partial coverage area scenarios or scenarios outside the coverage area.

[0109] In the case of the NR sidelink, unlike in the LTE sidelink, a transmission scheme that supports a vehicle terminal to send data to only one specific terminal through unicast communication and a transmission scheme that supports a vehicle terminal to send data to multiple specific terminals through multicast communication can be considered. For example, unicast technology and multicast technology can be usefully applied to situations such as service scenarios of formations, in which two or more vehicles are connected to a single network and move together in a cluster manner. Specifically, unicast communication can be used for a leading terminal in a group connected by formation to control one specific terminal, and multicast communication can be used for a leading terminal to simultaneously control a group including multiple specific terminals.

[0110] The following two methods can be used for resource allocation in V2X systems:

[0111] 1. Resource Allocation Mode 1-Scheduling Resource Allocation

[0112] Scheduling resource allocation is a method by which a base station allocates resources for sidelink transmission to an RRC-connected terminal in a dedicated scheduling method. Since the base station is able to manage the resources of the sidelink, the scheduling resource allocation method can be effective for interference management and resource pool management (dynamic allocation and / or semi-persistent transmission). If a terminal in RRC connection mode has data to be transmitted to other terminals, the terminal may use an RRC message or MAC CE to transmit information to the base station indicating the presence of data to be transmitted to other terminals. For example, the RRC message transmitted by the terminal to the base station may be a sidelink terminal information message (sidelinkUEInformation) or a terminal assistance information message (UEAssistanceInformation), and the MAC CE may correspond to a buffer status report (BSR) MAC CE, a scheduling request (SR), including at least one of an indicator indicating a BSR for V2X communication or information about the size of data buffered for sidelink communication.

[0113] 2. Resource allocation mode 2-UE autonomous resource allocation

[0114] Secondly, UE autonomous resource selection is a method of providing a sidelink transmission / reception resource pool for V2X to a terminal using system information or an RRC message (e.g., an RRCReconfiguration message or a PC5-RRC message), wherein the terminal selects a resource pool and resources according to a predetermined rule. UE autonomous resource selection may correspond to one or more of the following resource allocation methods ((a) to (d)):

[0115] (a) The terminal autonomously selects the sidelink resources for transmission.

[0116] (b) A terminal assists in sidelink resource selection for other terminals.

[0117] (c) The terminal is configured with a grant for NR configuration for sidelink transmission.

[0118] (d) A terminal can schedule sidelink transmissions of other terminals.

[0119] The resource selection method of the terminal may include area mapping, sensing-based resource selection, and random selection. In addition, even if the terminal is within the coverage of the base station, resource allocation or resource selection may not be performed according to the scheduled resource allocation or UE autonomous resource selection mode, and in this case, the terminal may perform V2X sidelink communication through a pre-configured sidelink transmit / receive resource pool. In addition, if the terminal for V2X communication is outside the coverage of the base station, the terminal may perform V2X sidelink communication through a pre-configured sidelink transmit / receive resource pool.

[0120] A sidelink radio bearer (SLRB) configuration and a SLRB for transmitting a sidelink flow or packet may be mapped to a sidelink logical channel group (LCG), and a sidelink LCG may be mapped to a sidelink logical channel. The SLRB configuration and the SLRB may be distinguished according to a source index, a destination index, a broadcast type, a quality of service (QoS) flow identifier (QFI) / ProSe flow identifier or a PC5 flow identifier (PFI), and a priority.

[0121] Fig. 8A A combination of data transmitted through a UL or a sidelink in a wireless communication system according to an embodiment is shown. Figure 8B FIG. 4 shows a combination of data transmitted through UL or sidelink in a wireless communication system according to an embodiment. Figure 8C A combination of data transmitted through a UL or a sidelink in a wireless communication system according to an embodiment is shown. Fig.8D A combination of data transmitted through a UL or a sidelink in a wireless communication system according to an embodiment is shown. Fig. 8E A combination of data transmitted through a UL or a sidelink in a wireless communication system according to an embodiment is shown. Figure 8F A combination of data transmitted through a UL or a sidelink in a wireless communication system according to an embodiment is shown. Figure 8G A combination of data transmitted through a UL or a sidelink in a wireless communication system according to an embodiment is shown.

[0122] refer to FIG. 8A to FIG. 8G , the terminal may transmit at least one of the following via UL or sidelink: signaling radio bearer (SRB) (e.g., RRC), dedicated radio bearer (DRB), MAC CE, PUCCH, PC5-RRC, PC5-S, sidelink DRB, sidelink feedback channel (SL-FCH), and sidelink medium access control (SL MAC) CE. FIG. 8A to FIG. 8D As shown, the data that the terminal can transmit through the side link can be at least one of the following: PC5-RRC, PC5-S, side link DRB, SL-FCH and SL MACCE or a combination thereof. Here, in the case where one or more side link data can be multiplexed on the SL MAC protocol data unit (PDU), the combination is possible, and the SL-FCH is not combined with other data. FIG. 8E to FIG. 8G As shown, the data that the terminal can transmit through UL can be at least one of the following: SRB (ie, RRC), DRB, MAC CE and PUCCH or a combination thereof. Here, in the case where one or more UL data can be multiplexed on the UL MAC PDU, the combination is possible, and the PUCCH is not combined with other data.

[0123] In the same time resource, UL resources and sidelink resources may be allocated to different frequencies from each other. For example, UL resources and sidelink resources located on the same time axis may be allocated to different bandwidth parts (BWP). In this case, the terminal may find it difficult to use both UL resources and sidelink resources due to hardware capability limitations and maximum transmission power limitations. For example, hardware capability limitations may include the number of beams that can be shaped simultaneously, the size of bandwidth that can be supported, the number of antennas, and shared / independent power devices. Therefore, the present disclosure relates to a method and apparatus for determining the transmission priority between UL and sidelink when it is determined that the terminal cannot simultaneously transmit both UL transmission packets and sidelink transmission packets. In addition, the present disclosure relates to a method and apparatus for determining the priority of packet transmission between UL and sidelink in a vehicle-to-everything (V2X) system of a next-generation wireless communication system.

[0124] In the following, the FIG. 8A to FIG. 8G An embodiment for determining transmission priority between UL data and sidelink data is shown.

[0125] The terminal may be configured to determine the transmission priority between the UL data including the MAC CE and the sidelink data. In this case, since the terminal is required to determine the priority value of the MAC CE, the system may define a standard for configuring the priority value of the MAC CE. For example, the standard for configuring the priority value of the MAC CE may be related to the RRC that needs to be processed urgently and preferentially so that the corresponding MAC CE transmits conventional UL data (e.g., corresponding to a user packet) and conventional sidelink data (e.g., corresponding to a user packet). That is, a MAC CE determined to be related to the RRC that needs to be processed preferentially to transmit conventional UL data and conventional sidelink data may be configured to have a higher priority value than conventional UL data and conventional sidelink data. A MAC CE determined to be unrelated to the RRC that needs to be processed preferentially to transmit conventional UL data and conventional sidelink data may be configured to have a lower priority value than conventional UL data and conventional sidelink data. As described above, since the method of configuring the priority value of the MAC CE and comparing the priority value between the MAC CE and the conventional UL data or conventional sidelink data can take into account all data that can be transmitted by the terminal, the method has the advantage of more accurately supporting priority transmission.

[0126] The terminal can determine the transmission priority between UL data not including MAC CE and sidelink data. In this case, since the system does not need to define a standard for configuring the priority value of MAC CE, the method for determining the priority value not including MAC CE is not complicated.

[0127] Fig. 9A A flowchart 910 is shown in which a terminal in a wireless communication system transmits data according to a priority level according to an embodiment. Fig. 9A The operation method of the terminal 120 is shown.

[0128] refer to Fig. 9A In step 901, the terminal identifies the necessity of determining the transmission priority between UL data and sidelink data. For example, after receiving information about the allocation of UL resources and sidelink resources and identifying the UL resources and sidelink resources based on the information, if it is determined that the terminal cannot transmit UL data or sidelink data at the same time, or the terminal cannot transmit UL data and sidelink data at the same time in the corresponding link at a predetermined power level due to the limitation of the terminal hardware, the terminal may need to determine the transmission priority between the UL data and the sidelink data.

[0129] In step 903, the terminal determines the priority based on the defined rules. The defined rules may vary depending on the specific implementation. FIG. 10A to FIG. 10B Describe how the rule is implemented.

[0130] In step 905, the terminal transmits UL data or sidelink data according to the determined priority. In other words, the terminal may encode and modulate the data determined to have a high priority, thereby transmitting the data. At this time, the data determined to have a low priority may be discarded, or may be transmitted at low power. Here, "transmitting at low power" means that the data determined to have a low priority is transmitted at a power lower than the power applied when the data is determined to have a high power. For example, the low power may be less than or equal to the remaining power, excluding the power used to transmit the data determined to have a high priority in the maximum transmission power of the terminal.

[0131] Fig. 9B Another flow chart 920 of a terminal determining priority between UL data and sidelink data according to an embodiment is shown. Fig. 9B The operation method of the terminal 120 is shown.

[0132] refer to Fig. 9B In step 911, the terminal recognizes the necessity of determining the transmission priority between UL data and sidelink data. For example, after receiving the information about the allocation of UL resources and sidelink resources and identifying the UL resources and sidelink resources based on the information, if it is determined that the terminal cannot transmit UL data or sidelink data at the same time, or the terminal cannot transmit UL data and sidelink data at the same time in the corresponding link at a predetermined power level due to the limitation of the terminal hardware, the terminal may need to determine the transmission priority between UL data and sidelink data.

[0133] In step 913, the terminal determines whether UL data needs to be transmitted through PUCCH. In other words, the terminal can identify whether there is data to be transmitted through PUCCH. In step 915, if UL data needs to be transmitted through PUCCH, the terminal can determine that the transmission priority of UL data is higher. On the other hand, in step 917, if UL data does not need to be transmitted through PUCCH, the terminal determines the priority based on the defined rules. The defined rules may vary depending on the specific implementation. The following will refer to FIG. 10A to FIG. 10D Describe how the rule is implemented.

[0134] In step 919, the terminal transmits UL data or sidelink data according to the determined priority. In other words, the terminal may encode and modulate the data determined to have the highest priority, thereby transmitting the data. At this time, the data determined to have a low priority may be discarded, or may be transmitted at low power. Here, "transmitting at low power" means that the data determined to have a low priority is transmitted at a power lower than the power applied when the data is determined to have a high power. For example, the low power may be less than or equal to the remaining power, excluding the power used to transmit the data determined to have a high priority in the maximum transmission power of the terminal.

[0135] Fig. 9B The operation shown is an implementation in which the transmission priority of the PUCCH in the UL data is defined as higher than the priority of the sidelink data. According to another implementation, in the case where the transmission priority of the PUCCH is not always defined as higher than the priority of the sidelink data, if the UL data includes the PUCCH, the terminal may Fig. 9A and FIG. 10A to FIG. 10D The priority between PUCCH and sidelink data may be determined by the process described in . In this case, PUCCH rather than MAC CE may be the object to be determined.

[0136] In the case where the transmission priority of the SRB in the UL data is defined as higher than the priority of the sidelink data, if the UL data includes the SRB, the terminal may Fig. 9B The process described in to determine the priority between SRB and sidelink data. In this case, Fig. 9B In the embodiment, SRB rather than PUCCH may be the object to be determined.

[0137] In the case where the transmission priority of SRB is not always defined as higher than the priority of sidelink data, if the UL data includes SRB, the terminal may Fig. 9A and FIG. 10A to FIG. 10D The priority between SRB and sidelink data may be determined by the operations described in . In this case, SRB rather than MAC CE may be the object to be determined.

[0138] In the following, reference will be made to FIG. 10A to FIG. 10E To describe the detailed operation of determining priorities.

[0139] Fig. 10A A flow chart 1010 is shown in which a terminal in a wireless communication system determines a priority between UL data and sidelink data according to an embodiment. Fig. 10A The operation method of the terminal 120 is shown.

[0140] refer to Fig. 10AIn step 1001, the terminal identifies UL data and sidelink data. The data may include a MAC PDU. That is, the terminal may identify a combination of data included in the UL data and the sidelink data. In step 1003, the terminal identifies whether the UL data includes data other than the MAC CE. In step 1005, if the UL data does not include data other than the MAC CE, the terminal may determine that the sidelink data has a higher priority than the UL data.

[0141] On the other hand, in step 1007, if the UL data includes data other than MAC CE, the terminal determines the priority based on the priority value. In other words, the terminal can determine the transmission priority between the remaining UL data excluding MAC CE and the sidelink data. To this end, the terminal can compare the priority value of the UL data with the priority value of the sidelink data. In the case of comparing the priority value of one or more UL data with the priority value of one or more sidelink data, the terminal can select the UL data determined to have the highest priority from the UL data according to the priority value, select the sidelink data determined to have the highest priority from the sidelink data according to the priority value, and compare the priority value of the selected UL data with the priority value of the selected sidelink data. The UL data may include at least one of SRB and DRB. The priority value of the UL data may be configured in the terminal by the system. The sidelink data may include at least one of PC5-RRC, PC5-S and SL-DRB. The priority value of the sidelink data may be configured in the terminal by the system.

[0142] Fig. 10B A flow chart 1030 is shown in which a terminal in a wireless communication system determines a priority between UL data and sidelink data according to an embodiment. Fig. 10B The operation method of the terminal 120 is shown.

[0143] refer to Fig. 10B In step 1021, the terminal identifies UL data and sidelink data. The data may include a MAC PDU. That is, the terminal may identify a combination of data included in the UL data and the sidelink data. In step 1023, the terminal identifies whether the UL data includes data other than the MAC CE. In step 1025, if the UL data does not include data other than the MAC CE, the terminal determines that the UL data has a higher priority than the sidelink data. That is, the terminal may determine that the MAC CE transmitted in the UL has a higher priority than the sidelink data.

[0144] On the other hand, in step 1027, if the UL data includes data other than MAC CE, the terminal determines the priority based on the priority value. In other words, the terminal can determine the transmission priority between the remaining UL data excluding MAC CE and the sidelink data. To this end, the terminal can compare the priority value of the UL data with the priority value of the sidelink data. In the case of comparing the priority value of one or more UL data with the priority value of one or more sidelink data, the terminal can select the UL data determined to have the highest priority from the UL data according to the priority value, select the sidelink data determined to have the highest priority from the sidelink data according to the priority value, and compare the priority value of the selected UL data with the priority value of the selected sidelink data. The UL data may include at least one of SRB and DRB. The priority value of the UL data may be configured in the terminal by the system. The sidelink data may include at least one of PC5-RRC, PC5-S and SL-DRB. The priority value of the sidelink data may be configured in the terminal by the system.

[0145] Fig. 10C A flow chart 1050 is shown of a terminal in a wireless communication system determining a priority between UL data and sidelink data according to an embodiment. Fig. 10C The operation method of the terminal 120 is shown.

[0146] refer to Fig. 10C In step 1041, the terminal identifies UL data and sidelink data. The data may include MAC PDU. That is, the terminal may identify a combination of data included in the UL data and the sidelink data. In step 1043, the terminal identifies whether the UL data includes data other than MAC CE.

[0147] In step 1045, if the UL data does not include data other than the MAC CE, the terminal identifies a MAC CE group including at least one MAC CE. A plurality of MAC CE groups may be identified, and the MAC CE groups may be divided into a group having a higher transmission priority than the sidelink data and a group having a lower transmission priority than the sidelink data. For example, MAC CE group "A" may include MAC CEs having a higher transmission priority than the sidelink data. Therefore, MAC CEs that do not belong to MAC CE group "A" may be determined to have a lower transmission priority than the sidelink data. Information about MAC CEs belonging to MAC CE group "A" may be configured in the terminal by the system, or may be pre-stored in the terminal. Even if information about MAC CE group "A" is pre-stored in the terminal, if the system configures new information about MACCE group "A", the terminal may use the information configured by the system.

[0148] In step 1047, if at least one MAC CE is included in the MAC CE group 'A', the terminal may determine that the transmission priority of the UL data is higher than the sidelink data. On the other hand, in step 1049, if no MAC CE is included in the MAC CE group 'A', the terminal may determine that the transmission priority of the sidelink data is higher than the UL data.

[0149] In step 1051, if the UL data includes data other than MAC CE, the terminal determines the priority based on the priority value. In other words, the terminal can determine the transmission priority between the remaining UL data excluding MAC CE and the sidelink data. To this end, the terminal can compare the priority value of the UL data with the priority value of the sidelink data. In the case of comparing the priority value of one or more UL data with the priority value of one or more sidelink data, the terminal can select the UL data determined to have the highest priority from the UL data according to the priority value, select the sidelink data determined to have the highest priority from the sidelink data according to the priority value, and compare the priority value of the selected UL data with the priority value of the selected sidelink data. The UL data may include at least one of SRB and DRB. The priority value of the UL data may be configured in the terminal by the system. The sidelink data may include at least one of PC5-RRC, PC5-S and SL-DRB. The priority value of the sidelink data may be configured in the terminal by the system.

[0150] Fig. 10D A flow chart 1070 is shown in which a terminal in a wireless communication system determines a priority between UL data and sidelink data according to an embodiment. Fig. 10D The operation method of the terminal 120 is shown.

[0151] refer to Fig. 10D In step 1061, the terminal identifies UL data and sidelink data. The data may include MAC PDU. That is, the terminal may identify a combination of data included in the UL data and the sidelink data. In step 1063, the terminal identifies whether the UL data includes data other than MAC CE.

[0152] In step 1065, if the UL data does not include data other than the MAC CE, the terminal compares the priority value of the side link data with a threshold value. In other words, the terminal can determine whether the priority value of the side link data is greater than a predetermined threshold value. For example, in the case where multiple side link data are combined, the terminal can compare the priority value of the link data with the highest priority among the multiple side link data with the threshold value. In an embodiment, a priority value greater than the threshold value indicates that the transmission priority is higher. However, according to another embodiment, a priority value less than the threshold value may indicate that the transmission priority is higher. In this case, step 1065 may be replaced by an operation to determine whether the priority value of the side link data is less than a predetermined threshold value.

[0153] In step 1067, if the priority value of the sidelink data is greater than the threshold, the terminal determines that the transmission priority of the sidelink data is higher than the UL data. On the other hand, in step 1069, if the priority value of the sidelink data is not greater than the threshold, the terminal determines that the transmission priority of the UL data is higher than the sidelink data.

[0154] In step 1071, if the UL data includes data other than MAC CE, the terminal determines the priority based on the priority value. In other words, the terminal can determine the transmission priority between the remaining UL data excluding MAC CE and the sidelink data. To this end, the terminal can compare the priority value of the UL data with the priority value of the sidelink data. In the case of comparing the priority value of one or more UL data with the priority value of one or more sidelink data, the terminal can select the UL data determined to have the highest priority from the UL data according to the priority value, select the sidelink data determined to have the highest priority from the sidelink data according to the priority value, and compare the priority value of the selected UL data with the priority value of the selected sidelink data. The UL data may include at least one of SRB and DRB. The priority value of the UL data may be configured in the terminal by the system. The sidelink data may include at least one of PC5-RRC, PC5-S and SL-DRB. The priority value of the sidelink data may be configured in the terminal by the system.

[0155] Fig.10E A flow chart 1090 is shown of a terminal in a wireless communication system determining a priority between UL data and sidelink data according to an embodiment. Fig.10E The operation method of the terminal 120 is shown.

[0156] refer to Fig.10E In step 1081, the terminal identifies and determines UL data and sidelink data. The data may include MAC PDU. That is, the terminal may identify a combination of data included in the UL data and the sidelink data.

[0157] In step 1083, the terminal compares the priority value of the side link data with a threshold value. In other words, the terminal can determine whether the priority value of the side link data is greater than a predetermined threshold value. For example, when multiple side link data are combined, the terminal can compare the priority value of the link data with the highest priority among the multiple side link data with the threshold value. In an embodiment, a priority value greater than the threshold value indicates a higher transmission priority. However, according to another embodiment, a priority value less than the threshold value may indicate a higher transmission priority. In this case, step 1083 may be replaced by an operation to determine whether the priority value of the side link data is less than a predetermined threshold value.

[0158] In step 1085, if the priority value of the sidelink data is greater than the threshold, the terminal determines that the transmission priority of the sidelink data is higher than the UL data. On the other hand, in step 1087, if the priority value of the sidelink data is not greater than the threshold, the terminal determines that the transmission priority of the UL data is higher than the sidelink data.

[0159] Hereinafter, an embodiment of calculating a priority value for comparing the priority between UL data and sidelink data in the above-mentioned embodiment will be described.

[0160] The 16-level priority value configured by the base station in the UL logical channel can be used as the priority value configured in the UL data. Similar to the UL, the base station can define the 16-level priority value configured in the sidelink data and apply it to the sidelink logical channel. That is, the system can use the same priority value to compare the priority of the sidelink logical channel based on the priority value configured in the UL logical channel.

[0161] Since 8-level priority values ​​are configured in the existing LTE-based sidelink logical channel, the 8-level priority values ​​can be applied to the sidelink logical channel to determine the priority between the LTE-based sidelink and the NR-based sidelink. The base station can configure the 8-level priority value for the UL logical channel in the same manner as the priority value configured in the sidelink data. The 8-level priority value can be configured separately from the existing 16-level priority value.

[0162] The base station may configure 16 levels of priority values ​​for UL logical channels, and may configure 8 levels of priority values ​​for sidelink logical channels. In order to compare the priorities between UL and sidelink having different level structures, the terminal may obtain information about the rules that 16 levels of priority values ​​correspond to 8 levels of priority values ​​or 8 levels of priority values ​​correspond to 16 levels of priority values. The corresponding rules between priority values ​​may be defined so that one priority value may correspond to two priority values. Assuming that the 16 levels of priority values ​​of the UL are 1 to 16 and the 8 levels of priority values ​​of the sidelink are 1 to 8, UL priority values ​​1 and 2 may correspond to sidelink priority value 1, and UL priority values ​​3 and 4 may correspond to sidelink priority value 2. In this case, if the UL priority value is 1 and if the sidelink priority value is 2, the terminal may determine that the priority of the UL is higher.

[0163] Additionally, a correspondence rule between priority values ​​may be defined so that the base station may configure the priority value of the logical channel based on the required QoS profile. That is, the priority values ​​may correspond to each other between the links according to the levels of the QoS profiles (e.g., urgency, low latency, high reliability, and high speed) required for the sidelink logical channel and the UL logical channel, respectively. For example, it may be determined that the levels of the QoS profiles are similar between the UL priority values ​​1, 2, and 3 and the sidelink priority value 1, and that the levels of the QoS profiles are similar between the UL priority values ​​4, 5, 6, and 7 and the sidelink priority values ​​2 and 3. Therefore, the terminal may determine that the sidelink priority value 1 corresponds to the UL priority values ​​1, 2, and 3, and the sidelink priority values ​​2 and 3 correspond to the UL priority values ​​4, 5, 6, and 7. In this case, if the priority value of the UL is 4 and if the sidelink priority value is 1, the terminal may determine that the priority of the sidelink is higher.

[0164] The operation of the priority value may also be applied to the case where the priority value for the MAC CE is configured.

[0165] Fig.11A A flowchart 1110 is shown for determining a priority between UL data and sidelink data in a terminal in a wireless communication system according to an embodiment. Fig.11A The operation method of the terminal 120 is shown.

[0166] refer to Fig.11A In step 1101, the terminal recognizes the necessity of determining the transmission priority between UL data and sidelink data. For example, if it is determined that the terminal cannot transmit UL data or sidelink data at the same time, or the terminal cannot transmit UL data and sidelink data at the same time in the corresponding link at a predetermined power level due to the limitation of the terminal hardware, the terminal may need to determine the transmission priority between UL data and sidelink data.

[0167] In step 1103, the terminal identifies UL data and sidelink data. The data may include MAC PDU. That is, the terminal may identify a combination of data included in the UL data and the sidelink data. In other words, the terminal may determine the UL data and the sidelink data as objects to determine transmission priority.

[0168] In step 1105, the terminal determines whether the UL data includes a MAC CE. In step 1107, if the UL data includes a MAC CE, the terminal determines that the transmission priority of the sidelink data is higher than that of the UL data.

[0169] On the other hand, in step 1109, if the UL data does not include a MAC CE, the terminal determines the priority based on the priority value. The terminal may compare the priority value of the UL data with the priority value of the sidelink data. In the case of comparing the priority value of one or more UL data with the priority value of one or more sidelink data, the terminal may select the UL data determined to have the highest priority from the UL data according to the priority value, may select the sidelink data determined to have the highest priority from the sidelink data according to the priority value, and may compare the priority value of the selected UL data with the priority value of the selected sidelink data. The UL data may include at least one of an SRB and a DRB. The priority value of the UL data may be configured in the terminal by the system. The sidelink data may include at least one of PC5-RRC, PC5-S, and SL-DRB. The priority value of the sidelink data may be configured in the terminal by the system.

[0170] Fig. 11B A flow chart 1130 is shown in which a terminal in a wireless communication system determines a priority between UL data and sidelink data according to an embodiment. Fig. 11B The operation method of the terminal 120 is shown.

[0171] refer to Fig. 11B In step 1121, the terminal recognizes the necessity of determining the transmission priority between the UL data and the sidelink data. For example, if it is determined that the terminal cannot transmit the UL data or the sidelink data at the same time, or the terminal cannot transmit the UL data and the sidelink data at the same time in the corresponding link at a predetermined power level due to the limitation of the terminal hardware, the terminal may need to determine the transmission priority between the UL data and the sidelink data.

[0172] In step 1123, the terminal identifies UL data and sidelink data. The data may include MAC PDU. That is, the terminal may identify a combination of data included in the UL data and the sidelink data. In other words, the terminal may determine the UL data and the sidelink data as objects to determine transmission priority.

[0173] In step 1125, the terminal determines whether the UL data includes a MAC CE. In step 1127, if the UL data includes a MAC CE, the terminal determines that the transmission priority of the UL data is higher than that of the sidelink data.

[0174] On the other hand, in step 1129, if the UL data does not include a MAC CE, the terminal determines the priority based on the priority value. The terminal may compare the priority value of the UL data with the priority value of the sidelink data. In the case of comparing the priority value of one or more UL data with the priority value of one or more sidelink data, the terminal may select the UL data determined to have the highest priority from the UL data according to the priority value, may select the sidelink data determined to have the highest priority from the sidelink data according to the priority value, and may compare the priority value of the selected UL data with the priority value of the selected sidelink data. The UL data may include at least one of an SRB and a DRB. The priority value of the UL data may be configured in the terminal by the system. The sidelink data may include at least one of PC5-RRC, PC5-S, and SL-DRB. The priority value of the sidelink data may be configured in the terminal by the system.

[0175] Fig. 11C A flow chart 1150 is shown of a terminal in a wireless communication system determining a priority between UL data and sidelink data according to an embodiment. Fig. 11C The operation method of the terminal 120 is shown.

[0176] refer to Fig. 11C In step 1141, the terminal recognizes the necessity of determining the transmission priority between the UL data and the sidelink data. For example, if it is determined that the terminal cannot transmit the UL data or the sidelink data at the same time, or the terminal cannot transmit the UL data and the sidelink data at the same time in the corresponding link at a predetermined power level due to the limitation of the terminal hardware, the terminal may need to determine the transmission priority between the UL data and the sidelink data.

[0177] In step 1143, the terminal identifies UL data and sidelink data. The data may include MAC PDU. That is, the terminal may identify a combination of data included in the UL data and the sidelink data. In other words, the terminal may determine the UL data and the sidelink data as objects to determine transmission priority. In step 1145, the terminal determines whether the UL data includes MAC CE.

[0178] In step 1147, if the UL data includes a MAC CE, the terminal identifies a MAC CE group including at least one MAC CE. A plurality of MAC CE groups may be identified, and the MAC CE groups may be divided into a group having a higher transmission priority than the sidelink data and a group having a lower transmission priority than the sidelink data. For example, MAC CE group "A" may include MAC CEs having a higher transmission priority than the sidelink data. Therefore, MAC CEs that do not belong to MAC CE group "A" may be determined to have a lower transmission priority than the sidelink data. Information about MAC CEs belonging to MAC CE group "A" may be configured in the terminal by the system, or may be pre-stored in the terminal. Even if information about MAC CE group "A" is pre-stored in the terminal, if the system configures new information about MAC CE group "A", the terminal may use the information configured by the system.

[0179] In step 1149, if at least one MAC CE is included in the MAC CE group 'A', the terminal determines that the transmission priority of the UL data is higher than the sidelink data. On the other hand, in step 1151, if no MAC CE is included in the MAC CE group 'A', the terminal may determine that the transmission priority of the sidelink data is higher than the UL data.

[0180] In step 1151, if the UL data includes data other than MAC CE, the terminal determines the priority based on the priority value. In other words, the terminal can determine the transmission priority between the remaining UL data excluding MAC CE and the sidelink data. To this end, the terminal can compare the priority value of the UL data with the priority value of the sidelink data. In the case of comparing the priority value of one or more UL data with the priority value of one or more sidelink data, the terminal can select the UL data determined to have the highest priority from the UL data according to the priority value, select the sidelink data determined to have the highest priority from the sidelink data according to the priority value, and compare the priority value of the selected UL data with the priority value of the selected sidelink data. The UL data may include at least one of SRB and DRB. The priority value of the UL data may be configured in the terminal by the system. The sidelink data may include at least one of PC5-RRC, PC5-S and SL-DRB. The priority value of the sidelink data may be configured in the terminal by the system.

[0181] Fig.11D A flow chart 1170 is shown in which a terminal in a wireless communication system determines a priority between UL data and sidelink data according to an embodiment. Fig.11D The operation method of the terminal 120 is shown.

[0182] refer to Fig.11DIn step 1161, the terminal recognizes the necessity of determining the transmission priority between the UL data and the sidelink data. For example, if it is determined that the terminal cannot transmit the UL data or the sidelink data at the same time, or the terminal cannot transmit the UL data and the sidelink data at the same time in the corresponding link at a predetermined power level due to the limitation of the terminal hardware, the terminal may need to determine the transmission priority between the UL data and the sidelink data.

[0183] In step 1163, the terminal identifies UL data and sidelink data. The data may include MAC PDU. That is, the terminal may identify a combination of data included in the UL data and the sidelink data. In other words, the terminal may determine the UL data and the sidelink data as objects to determine transmission priority. In step 1165, the terminal determines whether the UL data includes MAC CE.

[0184] In step 1167, if the UL data includes a MAC CE, the terminal compares the priority value of the side link data with a threshold value. In other words, the terminal can determine whether the priority value of the side link data is greater than a predetermined threshold value. For example, in the case where multiple side link data are combined, the terminal can compare the priority value of the link data with the highest priority among the multiple side link data with the threshold value. In an embodiment, a priority value greater than the threshold value indicates that the transmission priority is higher. However, according to another embodiment, a priority value less than the threshold value may indicate that the transmission priority is higher. In this case, step 1165 may be replaced by an operation of determining whether the priority value of the side link data is less than a predetermined threshold value.

[0185] In step 1169, if the priority value of the sidelink data is greater than the threshold, the terminal determines that the transmission priority of the sidelink data is higher than that of the UL data. On the other hand, in step 1171, if the priority value of the sidelink data is not greater than the threshold, the terminal determines that the transmission priority of the UL data is higher than that of the sidelink data.

[0186] In step 1173, if the UL data includes data other than MAC CE, the terminal determines the priority based on the priority value. In other words, the terminal can determine the transmission priority between the remaining UL data excluding MAC CE and the sidelink data. To this end, the terminal can compare the priority value of the UL data with the priority value of the sidelink data. In the case of comparing the priority value of one or more UL data with the priority value of one or more sidelink data, the terminal can select the UL data determined to have the highest priority from the UL data according to the priority value, select the sidelink data determined to have the highest priority from the sidelink data according to the priority value, and compare the priority value of the selected UL data with the priority value of the selected sidelink data. The UL data may include at least one of SRB and DRB. The priority value of the UL data may be configured in the terminal by the system. The sidelink data may include at least one of PC5-RRC, PC5-S and SL-DRB. The priority value of the sidelink data may be configured in the terminal by the system.

[0187] In the case where the terminal needs to determine the transmission priority between UL data and sidelink data, the terminal may consider whether the UL data needs to be transmitted through the PUCCH. If the UL data is transmitted through the PUCCH, the terminal may determine that the transmission priority of the UL data is higher than that of the sidelink data. If it is determined that the UL data does not need to be transmitted through the PUCCH, the terminal may determine that the transmission priority of the UL data is higher than that of the sidelink data according to the reference FIG. 11A to FIG. 11D At least one process is described to determine transmission priority between UL data and sidelink data.

[0188] In the case where the transmission priority of the UL data transmitted through the PUCCH is not configured to be higher than the sidelink data, if it is determined that the UL data includes the PUCCH, the terminal may perform a reference FIG. 11A to FIG. 11D The process described above is to determine the priority between PUCCH and sidelink data. FIG. 11A to FIG. 11D In one of the processes, PUCCH rather than MAC CE may be the object to be determined.

[0189] In the case where the transmission priority of SRB in UL data is defined as higher than that of sidelink data, if the UL data includes SRB, the terminal may determine that the transmission priority of UL data is higher than that of sidelink data. In the case where the transmission priority of SRB in UL data is not defined as higher than that of sidelink data, if the UL data includes SRB, the terminal may perform reference FIG. 11A to FIG. 11D The process described above is to determine the priority between SRB and sidelink data. FIG. 11A to FIG. 11D In one of the described procedures, the SRB rather than the MAC CE may be the object to be determined.

[0190] Already referenced 9A to 11D An embodiment in which a terminal uses a priority value to determine a transmission priority between UL data not including a MAC CE and sidelink data is described. FIG. 12A to FIG. 13B An implementation manner in which a terminal uses a priority value or a priority configuration value corresponding thereto to determine a transmission priority between UL data including a MAC CE and sidelink data is described.

[0191] Fig. 12A A flow chart 1210 is shown of a terminal in a wireless communication system determining a priority between UL data and sidelink data according to an embodiment. Fig. 12A The operation method of the terminal 120 is shown.

[0192] refer to Fig. 12A In step 1201, the terminal recognizes the necessity of determining the transmission priority between UL data and sidelink data. For example, if it is determined that the terminal cannot transmit UL data or sidelink data at the same time, or the terminal cannot transmit UL data and sidelink data at the same time in the corresponding link at a predetermined power level due to the limitation of the terminal hardware, the terminal may need to determine the transmission priority between UL data and sidelink data.

[0193] In step 1203, the terminal identifies UL data and sidelink data. The data may include MAC PDU. That is, the terminal may identify a combination of data included in the UL data and the sidelink data. In other words, the terminal may determine the UL data and the sidelink data as objects to determine transmission priority. In step 1205, the terminal identifies whether the UL data includes data other than MAC CE.

[0194] In step 1207, if the UL data does not include data other than the MAC CE, the terminal determines the transmission priority between the MAC CE and the sidelink data. To this end, the terminal may compare the priority value of the MAC CE with the priority value of the sidelink data. In the case of comparing the priority value of one or more MAC CEs with the priority value of one or more sidelink data, the terminal may select the UL data determined to have the highest priority from the MAC CE according to the priority value, may select the sidelink data determined to have the highest priority from the sidelink data according to the priority value, and may compare the priority value of the selected MAC CE with the priority value of the selected sidelink data. The priority value of the MAC CE may be configured in the terminal by the system, or may be pre-stored in the terminal. Even if the priority value of the MAC CE is pre-stored in the terminal, if the system configures new information about the priority value of the MAC CE, the terminal may use the information configured by the system.

[0195] On the other hand, in step 1209, if the UL data includes data other than the MAC CE, the terminal determines the transmission priority between the UL data including the MAC CE and the sidelink data. To this end, the terminal may compare the priority value of the UL data with the priority value of the sidelink data. In the case of comparing the priority value of one or more UL data with the priority value of one or more sidelink data, the terminal may select the UL data determined to have the highest priority from the UL data according to the priority value, may select the sidelink data determined to have the highest priority from the sidelink data according to the priority value, and may compare the priority value of the selected UL data with the priority value of the selected sidelink data. The UL data may include at least one of an SRB and a DRB. The priority value of the UL data may be configured in the terminal by the system. The sidelink data may include at least one of PC5-RRC, PC5-S, and SL-DRB. The priority value of the sidelink data may be configured in the terminal by the system.

[0196] Fig. 12B A flow chart 1230 is shown in which a terminal in a wireless communication system determines a priority between UL data and sidelink data according to an embodiment. Fig. 12B The operation method of the terminal 120 is shown.

[0197] refer to Fig. 12B In step 1221, the terminal recognizes the necessity of determining the transmission priority between the UL data and the sidelink data. For example, if it is determined that the terminal cannot transmit the UL data or the sidelink data at the same time, or the terminal cannot transmit the UL data and the sidelink data at the same time in the corresponding link at a predetermined power level due to the limitation of the terminal hardware, the terminal may need to determine the transmission priority between the UL data and the sidelink data.

[0198] In step 1223, the terminal determines whether UL data needs to be transmitted through PUCCH. In other words, the terminal can identify whether there is data to be transmitted through PUCCH. In step 1225, if UL data needs to be transmitted through PUCCH, the terminal determines that the transmission priority of UL data is higher. On the other hand, in step 1227, if UL data does not need to be transmitted through PUCCH, the terminal identifies UL data and sidelink data. The data may include MAC PDU. That is, the terminal can identify a combination of data included in UL data and sidelink data. In other words, the terminal can determine UL data and sidelink data as objects for which transmission priority is to be determined. In step 1229, the terminal identifies whether the UL data includes data other than MAC CE.

[0199] In step 1231, if the UL data does not include data other than the MAC CE, the terminal determines the transmission priority between the MAC CE and the sidelink data. To this end, the terminal may compare the priority value of the MAC CE with the priority value of the sidelink data. In the case of comparing the priority value of one or more MAC CEs with the priority value of one or more sidelink data, the terminal may select the UL data determined to have the highest priority from the MAC CE according to the priority value, may select the sidelink data determined to have the highest priority from the sidelink data according to the priority value, and may compare the priority value of the selected MAC CE with the priority value of the selected sidelink data. The priority value of the MAC CE may be configured in the terminal by the system, or may be pre-stored in the terminal. Even if the priority value of the MAC CE is pre-stored in the terminal, if the system configures new information about the priority value of the MAC CE, the terminal may use the information configured by the system.

[0200] On the other hand, in step 1233, if the UL data includes data other than the MAC CE, the terminal determines the transmission priority between the UL data including the MAC CE and the sidelink data. To this end, the terminal may compare the priority value of the UL data with the priority value of the sidelink data. In the case of comparing the priority value of one or more UL data with the priority value of one or more sidelink data, the terminal may select the UL data determined to have the highest priority from the UL data according to the priority value, may select the sidelink data determined to have the highest priority from the sidelink data according to the priority value, and may compare the priority value of the selected UL data with the priority value of the selected sidelink data. The UL data may include at least one of an SRB and a DRB. The priority value of the UL data may be configured in the terminal by the system. The sidelink data may include at least one of PC5-RRC, PC5-S, and SL-DRB. The priority value of the sidelink data may be configured in the terminal by the system.

[0201] Fig. 12B The process shown is an implementation method in which the transmission priority of the PUCCH in the UL data is defined as higher than the transmission priority of the sidelink data. In the case where the transmission priority of the PUCCH is not defined as higher than the sidelink data, if the UL data includes the PUCCH, the terminal may perform Fig. 12A The process described above determines the priority between PUCCH and sidelink data. In this case, PUCCH rather than MAC CE can be Fig. 12A The object to be determined in the process, and the priority value of the UL data transmitted through the PUCCH can be configured in the same manner as the implementation method of calculating the priority value of the MAC CE.

[0202] In the case where the transmission priority of the SRB in the UL data is defined to be higher than the transmission priority of the sidelink data, if the UL data includes the SRB, the terminal may perform Fig. 12B The process described above determines the priority between SRB and sidelink data. In this case, SRB rather than PUCCH can be Fig. 12B The object to be determined in the process described.

[0203] In the case where the transmission priority of the SRB is not defined to be higher than the transmission priority of the sidelink data, if the UL data includes the SRB, the terminal may perform Fig. 12A The process described above determines the priority between SRB and sidelink data. In this case, SRB rather than MAC CE can be Fig. 12A The object to be determined in the process described.

[0204] Fig.13A A flow chart 1310 is shown of a terminal in a wireless communication system determining a priority between UL data and sidelink data according to an embodiment. Fig.13A The operation method of the terminal 120 is shown.

[0205] refer to Fig.13A In step 1301, the terminal recognizes the necessity of determining the transmission priority between UL data and sidelink data. For example, if it is determined that the terminal cannot transmit UL data or sidelink data at the same time, or the terminal cannot transmit UL data and sidelink data at the same time in the corresponding link at a predetermined power level due to the limitation of the terminal hardware, the terminal may need to determine the transmission priority between UL data and sidelink data.

[0206] In step 1303, the terminal identifies UL data and sidelink data. The data may include MAC PDU. That is, the terminal may identify a combination of data included in the UL data and the sidelink data. In other words, the terminal may determine the UL data and the sidelink data as objects to determine transmission priority. In step 1305, the terminal identifies whether the UL data includes data other than MAC CE.

[0207] In step 1307, if the UL data does not include data other than the MAC CE, the terminal determines the transmission priority between the MAC CE and the sidelink data. To this end, the terminal may compare the priority value of the MAC CE with the priority value of the sidelink data. In the case of comparing the priority value of one or more MAC CEs with the priority value of one or more sidelink data, the terminal may select the UL data determined to have the highest priority from the MAC CE according to the priority value, may select the sidelink data determined to have the highest priority from the sidelink data according to the priority value, and may compare the priority value of the selected MAC CE with the priority value of the selected sidelink data. The priority value of the MAC CE may be configured in the terminal by the system, or may be pre-stored in the terminal. Even if the priority value of the MAC CE is pre-stored in the terminal, if the system configures new information about the priority value of the MAC CE, the terminal may use the information configured by the system.

[0208] On the other hand, in step 1309, if the UL data includes data other than the MAC CE, the terminal determines the transmission priority between the UL data including the MAC CE and the sidelink data. To this end, the terminal may compare the priority value of the UL data with the priority value of the sidelink data. In the case of comparing the priority value of one or more UL data with the priority value of one or more sidelink data, the terminal may select the UL data determined to have the highest priority from the UL data according to the priority value, may select the sidelink data determined to have the highest priority from the sidelink data according to the priority value, and may compare the priority value of the selected UL data with the priority value of the selected sidelink data. The UL data may include at least one of an SRB and a DRB. The priority value of the UL data may be configured in the terminal by the system. The sidelink data may include at least one of PC5-RRC, PC5-S, and SL-DRB. The priority value of the sidelink data may be configured in the terminal by the system.

[0209] An implementation of the priority configuration information used by the terminal in step 1307 or step 1309 to determine the transmission priority between UL data and sidelink data is shown in the following Table 1, Table 2, Table 3, or Table 4. In Table 1, Table 2, Table 3, or Table 4, the transmission priority is in descending order according to alphabetical order. For example, in Table 1, (a) indicates the highest priority, and (h) indicates the lowest priority.

[0210] [Table 1]

[0211]

[0212] In Table 1, (a-1) indicates the case where PC5-S is configured with the same priority as "C-RNTI MAC CE or data from UL-CCCH; PC5-RRC" of (a) priority, and in this case, the terminal may consider (e-1) to determine the transmission priority.

[0213] The priority value may be configured for each of the UL data and sidelink data configured as (e) priority (that is, “data from any UL logical channel, except data from UL-CCCH; data from any sidelink logical channel, except PC5-RRC”), or may be configured for each of the UL data and sidelink data configured as (e-1) priority (that is, “data from any UL logical channel, except data from UL-CCCH; data from any sidelink logical channel, except PC5-RRC and PC5-S”). The priority value may be configured in the same manner as the priority value is used in the above embodiment.

[0214] [Table 2]

[0215]

[0216]

[0217] In Table 2, the priority value can be configured for each of the UL data and sidelink data configured as (e) priority (that is, "data from any UL logical channel, except data from UL-CCCH; data from sidelink logical channels, including PC5-RRC"). The priority value can be configured in the same manner as the priority value is used in the above embodiment.

[0218] [Table 3]

[0219]

[0220] (a-1) in Table 3 indicates the case where PC5-S is configured with the same priority as "C-RNTI MAC CE or data from UL-CCCH; PC5-RRC" of (a) priority, and in this case, the terminal may consider (f-1) to determine the transmission priority.

[0221] The priority value may be configured for each of the UL data and sidelink data configured as (f) priority (that is, “data from any UL logical channel, except data from UL-CCCH; data from any SL logical channel, except PC5-RRC”), or may be configured for each of the UL data and sidelink data configured as (f-1) priority (that is, “data from any UL logical channel, except data from UL-CCCH; data from any SL logical channel, except PC5-RRC and PC5-S”). The priority value may be configured in the same manner as the priority value is used in the above embodiment.

[0222] [Table 4]

[0223]

[0224] In Table 4, the priority value can be configured for each of the UL data and sidelink data configured as priority (f) (that is, "data from any UL logical channel, except data from UL-CCCH; data from sidelink logical channels, including PC5-RRC"). The priority value can be configured in the same manner as the priority value is used in the above embodiment.

[0225] The example of (a) to (i) priority configuration corresponds to this configuration to allow the transmission priority of the sidelink data to correspond to the transmission priority of the UL data. This can be used to determine the transmission priority between UL data (excluding UL data transmitted via UL CCCH) and sidelink data. The QoS profile (requirement) of the service packet sent and received via the sidelink and UL can be considered to determine the criteria for configuring the (a) to (i) priorities of the sidelink data and UL data. The QoS profile may include, for example, at least one of the urgency, low latency, high reliability and high speed of the service packet. The criteria for configuring the (a) to (i) priorities of the MAC CE can be determined based on whether the MAC CE is intended to control the radio resources required for the service packet sent and received via the sidelink or UL. The MAC CE that needs to be processed before the service packet can be configured to have a higher transmission priority value from (a) to (i). The MAC CE that is determined to be not urgently processed and needs to be processed after the service packet can be configured to have a lower transmission priority value from (a) to (i).

[0226] Regarding the transmission priority of "MAC CE for BSR, excluding BSR for padding included" (hereinafter referred to as "BSR MAC CE") and "MAC CE for sidelink BSR, excluding sidelink BSR for padding included" (hereinafter referred to as "SLBSR MAC CE"), the case where the BSR MAC CE is determined to have a higher transmission priority than the SL BSR MAC CE has been described with reference to the examples in Tables 1 to 4.

[0227] Regardless of the examples in Tables 1 to 4, the transmission priority of the BSR MAC CE and the SL BSR MAC CE may be defined. For example, the transmission priority of the BSR MAC CE or the SL BSR MAC CE may be determined based on the transmission priority of each UL data or sidelink data to be transmitted in the resources allocated to the terminal in response to reporting the BSR MAC CE or the SL BSR MAC CE to the base station. Therefore, the QoS profile (requirement) required for the UL data or the sidelink data may be supported.

[0228] If it is determined that the transmission priority of UL data to be transmitted using the resources allocated in response to reporting the BSR MAC CE to the base station is higher than the transmission priority of sidelink data to be transmitted using the resources allocated in response to reporting the SL BSR MAC CE to the base station, the terminal may determine that the transmission priority of the BSR MAC CE is higher than the transmission priority of the SL BSR MAC CE. In this case, the terminal may compare the transmission priority of the UL data determined to have the highest transmission priority among one or more UL data to be transmitted in the resources allocated in response to reporting the BSR MAC CE with the transmission priority of the sidelink data determined to have the highest transmission priority among one or more sidelink data to be transmitted in the resources allocated in response to reporting the SL BSR MAC CE.

[0229] If it is determined that the transmission priority of UL data to be transmitted using the resources allocated in response to reporting the BSR MAC CE to the base station is lower than the transmission priority of sidelink data to be transmitted using the resources allocated in response to reporting the SL BSR MAC CE to the base station, the terminal may determine that the transmission priority of the BSR MAC CE is lower than the transmission priority of the SL BSR MAC CE. In this case, the terminal may compare the transmission priority of the UL data determined to have the highest transmission priority among one or more UL data to be transmitted in the resources allocated in response to reporting the BSR MAC CE with the transmission priority of the sidelink data determined to have the highest transmission priority among one or more sidelink data to be transmitted in the resources allocated in response to reporting the SL BSR MAC CE.

[0230] exist Fig.13A In step 1307 of , when the terminal determines the transmission priority between one or more MAC CEs and one or more sidelink data, the terminal may select the MAC CE determined to have the highest priority among the MAC CEs based on Table 1, Table 2, Table 3, or Table 4, and may select the sidelink data determined to have the highest priority among the sidelink data based on Table 1, Table 2, Table 3, or Table 4. The terminal may determine the transmission priority of the selected MAC CE and the selected sidelink data.

[0231] For example, in step 1307, if it is determined that the priority of at least one MAC CE corresponding to UL data is configured as one of (a) to (e) in Table 1, Table 2, Table 3, or Table 4, the terminal determines that the transmission priority of UL data is higher than the transmission priority of sidelink data. In step 1307, if it is determined that the priority of at least one MAC CE corresponding to UL data is not configured as one of (a) to (e) in Table 1, Table 2, Table 3, or Table 4, the terminal determines that the transmission priority of sidelink data is higher than the transmission priority of UL data.

[0232] In step 1309, when the terminal determines the transmission priority between one or more UL data and one or more sidelink data, the terminal may select the UL data determined to have the highest priority among the UL data based on Table 1, Table 2, Table 3, or Table 4, and may select the sidelink data determined to have the highest priority among the sidelink data based on Table 1, Table 2, Table 3, or Table 4. The terminal may determine the transmission priority of the selected UL data and the selected sidelink data.

[0233] In step 1309, in the method for determining the transmission priority in the case of one or more UL data configured with a priority value, the terminal further adds "priority 1" to the priority value of the UL data determined to have the highest priority based on the priority value. For example, in the case of configuring one of the 16-level priority values, the lower the priority value from 1 to 16 (or from 0 to 15), the higher the transmission priority. Therefore, the priority value of the UL data can be compared with the priority of the sidelink data within the range of 0 to 15. If the priority value of the UL determined to have the highest priority among one or more UL data is 3, the system can determine that the priority value of the UL data is 2 by further adding priority 1 thereto.

[0234] Despite Fig.13AIt has been described in Tables 1, 2, 3, and 4 that SRB in UL data and PC5-RRC or PC5-S in sidelink data, but the priority configurations in Tables 1 to 4 may not be applied to at least one of SRB, PC5-RRC, and PC5-S. In this case, the system may configure the priority in the terminal for at least one of SRB, PC5-RRC, and PC5-S.

[0235] UL data may include at least one of SRB and DRB. The priority value of UL data may be configured in the terminal by the system. Sidelink data may include at least one of PC5-RRC, PC5-S and SL-DRB. The priority value of sidelink data may be configured in the terminal by the system.

[0236] Fig. 13B A flow chart 1330 is shown in which a terminal in a wireless communication system determines a priority between UL data and sidelink data according to an embodiment. Fig. 13B The operation method of the terminal 120 is shown.

[0237] refer to Fig. 13B In step 1321, the terminal recognizes the necessity of determining the transmission priority between the UL data and the sidelink data. For example, if it is determined that the terminal cannot transmit the UL data or the sidelink data at the same time, or the terminal cannot transmit the UL data and the sidelink data at the same time in the corresponding link at a predetermined power level due to hardware limitations of the terminal, the terminal may need to determine the transmission priority between the UL data and the sidelink data.

[0238] In step 1323, the terminal determines whether UL data needs to be transmitted through PUCCH. In other words, the terminal can identify whether there is data to be transmitted through PUCCH. In step 1325, if UL data needs to be transmitted through PUCCH, the terminal determines that the transmission priority of UL data is higher. On the other hand, in step 1327, if UL data does not need to be transmitted through PUCCH, the terminal identifies UL data and sidelink data. The data may include MAC PDU. That is, the terminal can identify a combination of data included in UL data and sidelink data. In other words, the terminal can determine UL data and sidelink data as objects for which transmission priority is to be determined. In step 1329, the terminal identifies whether the UL data includes data other than MAC CE.

[0239] In step 1331, if the UL data does not include data other than the MAC CE, the terminal determines the transmission priority between the MAC CE and the sidelink data. To this end, the terminal may compare the priority value of the MAC CE with the priority value of the sidelink data. In the case of comparing the priority value of one or more MAC CEs with the priority value of one or more sidelink data, the terminal may select the UL data determined to have the highest priority from the MAC CE according to the priority value, may select the sidelink data determined to have the highest priority from the sidelink data according to the priority value, and may compare the priority value of the selected MAC CE with the priority value of the selected sidelink data. The priority value of the MAC CE may be configured in the terminal by the system, or may be pre-stored in the terminal. Even if the terminal pre-stores the priority value of the MAC CE, if the system configures new information about the priority value of the MAC CE, the terminal may use the information configured by the system.

[0240] On the other hand, in step 1333, if the UL data includes data other than the MAC CE, the terminal determines the transmission priority between the UL data including the MAC CE and the sidelink data. To this end, the terminal may compare the priority value of the UL data with the priority value of the sidelink data. In the case of comparing the priority value of one or more UL data with the priority value of one or more sidelink data, the terminal may select the UL data determined to have the highest priority from the UL data according to the priority value, may select the sidelink data determined to have the highest priority from the sidelink data according to the priority value, and may compare the priority value of the selected UL data with the priority value of the selected sidelink data. The UL data may include at least one of an SRB and a DRB. The priority value of the UL data may be configured in the terminal by the system. The sidelink data may include at least one of PC5-RRC, PC5-S, and SL-DRB. The priority value of the sidelink data may be configured in the terminal by the system.

[0241] Fig. 13B The process shown is an implementation method in which the transmission priority of the PUCCH in the UL data is defined as higher than the transmission priority of the sidelink data. In the case where the transmission priority of the PUCCH is not defined as higher than the sidelink data, if the UL data includes the PUCCH, the terminal may perform Fig.13A The process described above determines the priority between PUCCH and sidelink data. In this case, PUCCH rather than MAC CE can be Fig.13A The objects to be determined in the process, and the priority configuration of PUCCH can be added to Table 1, Table 2, Table 3 and Table 4.

[0242] In the case where the transmission priority of the SRB in the UL data is defined to be higher than the transmission priority of the sidelink data, if the UL data includes the SRB, the terminal may perform Fig. 13B The process described above determines the priority between SRB and sidelink data. In this case, SRB rather than PUCCH can be Fig. 13B The object to be determined in the process described.

[0243] In the case where the transmission priority of the SRB is not defined to be higher than the transmission priority of the sidelink data, if the UL data includes the SRB, the terminal may perform Fig.13A The process described above determines the priority between SRB and sidelink data. In this case, SRB rather than MAC CE can be Fig.13A The objects to be determined in the process described, and the priority configuration of SRB can be added to Table 1, Table 2, Table 3 and Table 4.

[0244] At the same time, according to 9A to 13B When determining the transmission priority between the UL data including the MAC CE and the sidelink data, since the MAC CE is data including information that needs to be quickly transmitted to the receiving entity and then quickly processed, determining that the UL data including at least one MAC CE has a higher priority than the sidelink data is based on the fact that the MAC CE must have a higher transmission priority than regular data. Since the QoS profile required for the sidelink data (that is, its requirements) is data including information requesting lower latency, higher reliability, higher speed, and higher urgency than the MAC CE, determining that the sidelink data has a higher priority than the UL data including at least one MAC CE is based on the fact that the sidelink data must have a higher transmission priority.

[0245] The terminal can be based on the reference 9A to 13B At least one of the embodiments described above determines the transmission priority between UL data and sidelink data, and the following will be referred to in detail for the data of the link determined to be preferentially transmitted and the data of the link not determined to be preferentially transmitted. Fig.14A or Fig. 14B Describes the operation.

[0246] Fig.14A A flowchart 1410 is shown after a terminal in a wireless communication system determines a priority between UL data and sidelink data according to an embodiment. Fig.14A The operation method of the terminal 120 is shown.

[0247] refer to Fig.14AIn step 1401, the terminal recognizes the necessity of determining the transmission priority between UL data and sidelink data. For example, if it is determined that the terminal cannot transmit UL data or sidelink data at the same time, or the terminal cannot transmit UL data and sidelink data at the same time in the corresponding link at a predetermined power level due to the limitation of the terminal hardware, the terminal may need to determine the transmission priority between UL data and sidelink data.

[0248] In step 1403, the terminal determines the transmission priority between the UL data and the sidelink data. For example, the terminal may determine the transmission priority between the UL data and the sidelink data according to the reference 9A to 13B Any of the described embodiments determines transmission priority between UL data and sidelink data.

[0249] In step 1405, the terminal determines whether the transmission priorities between the UL data and the sidelink data determined in step 1403 are the same. In step 1407, if it is determined that the transmission priorities between the UL and the sidelink are the same, the terminal selects any one of the sidelink and the UL, thereby determining to transmit its data, and discards the data of the remaining links. On the other hand, in step 1409, if it is determined that the transmission priorities between the UL and the sidelink are not the same, the terminal discards the data of the link determined to have a low transmission priority, and transmits the data of the link determined to have a high transmission priority.

[0250] Fig. 14B A flowchart 1430 is shown after the terminal determines the priority between UL data and sidelink data according to an embodiment. Fig. 14B The operation method of the terminal 120 is shown.

[0251] refer to Fig. 14B In step 1421, the terminal recognizes the necessity of determining the transmission priority between the UL data and the sidelink data. For example, if it is determined that the terminal cannot transmit the UL data or the sidelink data at the same time, or the terminal cannot transmit the UL data and the sidelink data at the same time in the corresponding link at a predetermined power level due to hardware limitations of the terminal, the terminal may need to determine the transmission priority between the UL data and the sidelink data.

[0252] In step 1423, the terminal determines the transmission priority between the UL data and the sidelink data. For example, the terminal may determine the transmission priority between the UL data and the sidelink data according to the reference 9A to 13B Any of the described embodiments determines transmission priority between UL data and sidelink data.

[0253] In step 1425, the terminal determines whether the transmission priorities between the UL data and the sidelink data determined in step 1423 are the same. In step 1427, if it is determined that the transmission priorities between the UL and the sidelink are the same, the terminal may select any one of the sidelink and the UL, thereby transmitting the data of the link at the configured transmission power level, and transmitting the data of the remaining links at a transmission power level lower than the configured transmission power. The configured transmission power indicates a power determined by the terminal according to a power control algorithm adopted by the system or indicated by the base station.

[0254] On the other hand, in step 1429, if it is determined that the transmission priorities between the UL and the sidelink are not the same, the terminal transmits data of the link determined to have a low transmission priority at a transmission power level lower than the configured transmission power, and transmits data of the link determined to have a high transmission priority at the configured transmission power level. The configured transmission power indicates power determined by the terminal according to a power control algorithm adopted by the system or indicated by the base station.

[0255] The UL packet may include at least one of a packet transmitted in a UL data bearer logical channel, a packet transmitted in a signaling bearer logical channel, and a UL MAC CE. The sidelink packet may include at least one of a packet transmitted in a sidelink data bearer logical channel, a packet transmitted in a sidelink signaling bearer logical channel, and a sidelink MAC CE. In this case, the transmission priority between the UL packet and the sidelink packet may be processed as follows.

[0256] The terminal may compare the transmission priority value configured in the logical channel of the packet transmitted in the UL data bearer with the configured threshold value. If the packet transmitted in the UL data bearer includes multiple logical channels, the terminal may compare the transmission priority value of the logical channel with the maximum transmission priority value among the multiple logical channels with the configured threshold value.

[0257] The terminal may compare the transmission priority value configured in the logical channel of the packet transmitted in the UL signaling bearer with the configured threshold value. For example, if the packet transmitted in the UL signaling bearer includes multiple logical channels, the terminal may compare the transmission priority value of the logical channel with the maximum transmission priority value among the multiple logical channels with the configured threshold value.

[0258] The terminal may compare the transmission priority value configured in the UL MAC CE with the configured threshold value. For example, if multiple UL MAC CEs are included, the terminal may compare the transmission priority value of the MAC CE with the maximum transmission priority value among the multiple UL MAC CEs with the configured threshold value.

[0259] If a separate transmission priority value for UL MAC CE is not configured, the transmission priority value of the MAC CE may be configured based on the transmission priority value of the logical channel of the UL data bearer corresponding to the MAC CE, or may be configured based on the transmission priority value of the logical channel of the UL signaling bearer. For example, the transmission priority of the UL BSR MAC CE may be configured based on the transmission priority value of the logical channel reported by the UL BSR MAC CE. If one UL BSR MAC CE includes information about multiple logical channels, the transmission priority of the corresponding UL BSR MAC CE may be configured based on the maximum transmission priority value among the multiple transmission priority values ​​of the multiple logical channels.

[0260] If the UL packets to be transmitted include at least one of packets transmitted in a data bearer logical channel, packets transmitted in a signaling bearer logical channel, and MAC CE, the terminal may compare the transmission priority value of the packet having the maximum transmission priority value with the configured threshold.

[0261] The terminal may compare the transmission priority value configured in the logical channel of the packet transmitted in the sidelink data bearer with the configured threshold value. If the packet transmitted in the sidelink data bearer includes multiple logical channels, the terminal may compare the transmission priority value of the logical channel with the maximum transmission priority value among the multiple logical channels with the configured threshold value.

[0262] The terminal may compare the transmission priority value configured in the logical channel of the packet transmitted in the sidelink signaling bearer with the configured threshold value. If the packet transmitted in the sidelink signaling bearer includes multiple logical channels, the terminal may compare the transmission priority value of the logical channel with the maximum transmission priority value among the multiple logical channels with the configured threshold value.

[0263] The terminal may compare the transmission priority value configured in the sidelink MAC CE with the configured threshold value. If multiple sidelink MAC CEs are included, the terminal may compare the transmission priority value of the MAC CE with the maximum transmission priority value among the multiple sidelink MAC CEs with the configured threshold value.

[0264] If a separate transmission priority value for the sidelink MAC CE is not configured, the transmission priority value of the MAC CE may be configured based on the transmission priority value of the logical channel carried by the sidelink data corresponding to the MAC CE, or may be configured based on the transmission priority value of the logical channel carried by the sidelink signaling.

[0265] If the sidelink packets to be transmitted include at least one of a packet transmitted in a data bearer logical channel, a packet transmitted in a signaling bearer logical channel, and a MAC CE, the terminal may compare the transmission priority value of the packet having the maximum transmission priority value with the configured threshold.

[0266] The transmission priority threshold of the UL packet and / or the transmission priority threshold of the sidelink packet may be configured for the terminal and may be configured to be the same value or different values.

[0267] Regarding the transmission priority between the UL packet and the sidelink packet, if it is determined that the transmission priority value of the UL packet is greater than the threshold and the transmission priority value of the sidelink packet is less than the threshold, the terminal may determine that the transmission priority of the UL packet is higher. Otherwise, the terminal may determine that the transmission priority of the sidelink packet is higher.

[0268] Regarding the transmission priority between the UL packet and the sidelink packet, if it is determined that the transmission priority value of the UL packet is lower than the threshold and the transmission priority value of the sidelink packet is greater than the threshold, the terminal may determine that the transmission priority of the UL packet is higher. Otherwise, the terminal may determine that the transmission priority of the sidelink packet is higher.

[0269] An implementation of the UL physical signaling transmitted at least in the PUSCH or PUCCH may include at least one of hybrid automatic repeat request (HARQ) feedback, scheduling request (SR) RSRP (reference signal received power), beam measurement, channel quality indicator (CQI), CSI-RS (channel state information reference signal) and sounding reference signal (SRS). An implementation of the sidelink physical signaling transmitted in the sidelink physical channel may include at least one of HARQ feedback, sidelink RSRP, sidelink CQI and sidelink SRS.

[0270] At least one of the following five (5) embodiments may be applied as a method of determining transmission priority of UL physical signaling or sidelink physical signaling, and the method of determining transmission priority may be differently applied depending on physical signaling.

[0271] 1. The transmission priority value for UL physical signaling can be configured.

[0272] The terminal may compare the transmission priority value of the UL physical signaling with the configured threshold value. If multiple UL physical signalings are included, the terminal may compare the transmission priority value of the physical signaling with the maximum transmission priority value among the multiple UL physical signalings with the configured threshold value.

[0273] A transmission priority value for the sidelink physical signaling may be configured. The terminal may compare the transmission priority value of the sidelink physical signaling with a configured threshold. If multiple sidelink physical signalings are included, the terminal may compare the transmission priority value of the physical signaling with the maximum transmission priority value among the multiple sidelink physical signalings with the configured threshold.

[0274] In the case of (1), the terminal may compare the sidelink signaling with the maximum transmission priority value of at least one of the sidelink physical layer signaling and the sidelink packet to be transmitted with the configured threshold, and may compare the UL signaling with the maximum transmission priority value of at least one of the UL physical layer signaling and the UL packet to be transmitted with the configured threshold. If it is determined that the transmission priority value of the sidelink signaling is greater than the configured threshold and the transmission priority value of the UL signaling is lower than the configured threshold, the terminal may determine that the transmission priority of the sidelink signaling is higher. Otherwise, the terminal may determine that the transmission priority of the UL signaling is higher. Here, it is assumed that the larger the transmission priority value, the higher the priority.

[0275] 2. The transmission priority value for UL physical signaling can be configured.

[0276] The transmission priority value for the sidelink physical signaling may be configured. The terminal may compare the transmission priority value of the UL physical layer signaling with the transmission priority value of the sidelink physical signaling. If a plurality of UL physical signalings are included, the terminal may determine the transmission priority value of the UL physical signaling having the maximum transmission priority value among the plurality of UL physical signalings as the object to be compared. If a plurality of sidelink physical signalings are included, the terminal may determine the transmission priority value of the sidelink physical signaling having the maximum transmission priority value among the plurality of sidelink physical signalings as the object to be compared.

[0277] In the case of (2), the terminal may compare the sidelink signaling with the maximum transmission priority value of at least one of the sidelink physical layer signaling and the sidelink packet to be transmitted with the UL signaling with the maximum transmission priority value of at least one of the UL physical layer signaling and the UL packet to be transmitted. If it is determined that the transmission priority value of the sidelink signaling is greater than the transmission priority value of the UL signaling, the terminal may determine that the transmission priority of the sidelink signaling is higher. Otherwise, the terminal may determine that the transmission priority of the UL signaling is higher. Here, it is assumed that the larger the transmission priority value, the higher the priority.

[0278] 3. A separate transmission priority value for UL physical signaling may not be configured.

[0279] In this case, the transmission priority value of the UL physical signaling may be configured based on the transmission priority value of the UL group (e.g., at least one of the data bearing logical channel, the signal bearing logical channel, and the MAC CE) corresponding to the UL physical signaling. If there are multiple UL groups corresponding to the UL physical signaling, the priority value of the UL physical signaling may be configured based on the transmission priority value of the UL group having the maximum transmission priority value among the multiple UL groups.

[0280] A separate transmission priority value for the sidelink physical signaling may not be configured. In this case, the transmission priority value of the sidelink physical signaling may be configured based on the transmission priority value of the sidelink packet (e.g., at least one of the data bearing logical channel, the signal bearing logical channel, and the MAC CE) corresponding to the sidelink physical signaling. If there are multiple sidelink packets corresponding to the sidelink physical signaling, the priority value of the sidelink physical signaling may be configured based on the transmission priority value of the sidelink packet having the maximum transmission priority value among the multiple sidelink packets.

[0281] In the case of (3), the terminal may compare the sidelink signaling with the maximum transmission priority value of at least one of the sidelink physical layer signaling and the sidelink packet to be transmitted with the configured threshold, and may compare the UL signaling with the maximum transmission priority value of at least one of the UL physical layer signaling and the UL packet to be transmitted with the configured threshold. If it is determined that the transmission priority value of the sidelink signaling is greater than the configured threshold and the transmission priority value of the UL signaling is less than the configured threshold, the terminal may determine that the transmission priority of the sidelink signaling is higher. Otherwise, the terminal may determine that the transmission priority of the UL signaling is higher. Here, it is assumed that the larger the transmission priority value, the higher the priority.

[0282] The terminal may compare the sidelink signaling with the maximum transmission priority value of at least one of the sidelink physical layer signaling and the sidelink packet to be transmitted with the UL signaling with the maximum transmission priority value of at least one of the UL physical layer signaling and the UL packet to be transmitted. If it is determined that the transmission priority value of the sidelink signaling is greater than the transmission priority value of the UL signaling, the terminal may determine that the transmission priority of the sidelink signaling is higher. Otherwise, the terminal may determine that the transmission priority of the UL signaling is higher. Here, it is assumed that the larger the transmission priority value, the higher the priority.

[0283] 4. A separate transmission priority value for UL physical signaling may not be configured.

[0284] In this case, the transmission priority value of the UL physical signaling can be configured based on the transmission priority value of at least one of the sidelink packets (e.g., data-bearing logical channels, signal-bearing logical channels, or MAC CE) and / or the sidelink physical signaling. If there are one or more sidelink packets and / or sidelink physical signaling, the priority value of the UL physical signaling can be configured based on the transmission priority value of the sidelink packet and / or the sidelink physical signaling with the maximum transmission priority value. If it is determined that the transmission priority value of the sidelink packet and / or the sidelink physical signaling is greater than the configured threshold, the terminal can determine that the transmission priority of the sidelink signaling is higher. Otherwise, the terminal can determine that the transmission priority of the UL is higher.

[0285] 5. A separate transmission priority value for sidelink physical signaling may not be configured.

[0286] In this case, the transmission priority value of the sidelink physical signaling may be configured based on the transmission priority value of at least one of the UL packets (e.g., at least one of the data-bearing logical channel, the signal-bearing logical channel, and the MACCE) and / or the UL physical signaling. If there are multiple UL packets and / or UL physical signaling, the transmission priority value of the sidelink packet and / or the sidelink physical signaling may be configured based on the transmission priority value of the UL packet and / or the UL physical signaling having the maximum transmission priority value among the multiple UL packets and / or the UL physical signaling. If it is determined that the transmission priority value of the UL packet and / or the UL physical signaling is greater than the configured threshold, the terminal may determine that the transmission priority of the UL is higher. Otherwise, the terminal may determine that the transmission priority of the sidelink is higher.

[0287] The method of determining priority between UL physical signaling transmission and sidelink transmission at least through PUSCH or PUCCH may include at least one of the following four (4) embodiments.

[0288] 1. The terminal may determine the priority of UL physical signaling transmission based on the transmission priority of the sidelink packet.

[0289] The transmission priority value of the sidelink packet may be configured in the terminal. If it is determined that the transmission priority of the sidelink packet is higher (i.e., higher than the configured threshold), the terminal may process the sidelink packet before the UL physical signaling. If it is determined that the transmission priority of the sidelink packet is lower (i.e., lower than the configured threshold), the terminal may prioritize the UL physical signaling. In the above implementation, it is assumed that the larger the transmission priority value, the higher the priority.

[0290] 2. The terminal can determine the transmission priority based on the transmission priority of the sidelink packet and the transmission priority of the UL physical signaling. Priority.

[0291] The transmission priority value of the UL physical signaling and the transmission priority value of the sidelink packet can be configured in the terminal. If it is determined that the transmission priority of the sidelink packet is higher (i.e., higher than the configured threshold) and if it is determined that the transmission priority value of the UL physical signaling is lower than the configured threshold, the terminal may give priority to the sidelink packet. Otherwise, the terminal may give priority to the UL physical signaling. Alternatively, if it is determined that the transmission priority of the sidelink packet is lower than the configured threshold and the transmission priority value of the UL physical signaling is higher than the configured threshold, the terminal may give priority to the UL physical signaling. Otherwise, the terminal may give priority to the sidelink packet. In the above embodiment, it is assumed that the larger the transmission priority value, the higher the priority.

[0292] 3. The terminal can determine the transmission priority based on the transmission priority of the sidelink packet and the transmission priority of the UL physical signaling. Priority.

[0293] The transmission priority value of the sidelink packet can be configured in the terminal. The transmission priority value of the UL physical signaling can be configured based on the transmission priority value of the UL packet related to the UL physical signaling. If it is determined that the transmission priority of the sidelink packet is higher (i.e., higher than the configured threshold) and if it is determined that the transmission priority value of the UL physical signaling is lower than the configured threshold, the terminal may give priority to the sidelink packet. Otherwise, the terminal may give priority to the UL physical signaling. Alternatively, if it is determined that the transmission priority of the sidelink packet is lower than the configured threshold and the transmission priority value of the UL physical signaling is higher than the configured threshold, the terminal may give priority to the UL physical signaling. Otherwise, the terminal may give priority to the sidelink packet. In the above embodiment, it is assumed that the larger the transmission priority value, the higher the priority.

[0294] 4. The terminal may compare the transmission priority value of the sidelink packet with the transmission priority value of the UL physical signaling, This determines the transmission priority.

[0295] The transmission priority value of the sidelink packet can be configured in the terminal. The transmission priority value of the UL physical signaling can be configured in the terminal, and when the transmission priority value of the UL physical signaling is not configured, the transmission priority value of the UL physical signaling can be configured based on the transmission priority value of the UL packet related to the UL physical signaling. If multiple sidelink packets are included, the terminal can compare the transmission priorities based on the sidelink packet with the maximum transmission priority value among the multiple sidelink packets. If there are multiple UL physical signalings, the terminal can compare the transmission priorities based on the UL physical signaling with the maximum transmission priority value among the multiple UL physical signalings. If the comparison result is to determine that the transmission priority value of the sidelink packet is greater than the transmission priority value of the UL physical signaling, the terminal can give priority to the sidelink packet. Otherwise, the terminal can give priority to the UL physical signaling.

[0296] The above four (4) embodiments of determining the priority between UL physical signaling transmission through at least PUSCH or PUCCH and sidelink transmission may be implemented as a method for determining the priority of UL physical signaling transmission through at least PUSCH or PUCCH and sidelink HARQ feedback signaling transmission. The transmission priority value of the sidelink HARQ feedback signaling may be configured based on the transmission priority value of the sidelink packet corresponding to the sidelink HARQ feedback. If there are multiple logical channels of the sidelink packet corresponding to the sidelink HARQ feedback, the transmission priority value of the sidelink HARQ feedback may be configured based on the transmission priority value of the sidelink packet corresponding to the logical channel with the maximum transmission priority value among the multiple logical channels. Here, it is assumed that the larger the transmission priority value, the higher the priority.

[0297] The method of determining priority between UL physical signaling transmission performed through PUSCH or PUCCH and UL physical signaling transmission related to bypass packet transmission may include at least one of the following embodiments.

[0298] The UL physical signaling related to the sidelink packet transmission may include control information transmitted to the base station as information about the sidelink communication, and may include, for example, at least one information about the SR of the sidelink communication or information about the HARQ ACK / NACK of the sidelink packet. For example, in the case of determining the priority of the SR of the sidelink packet transmission and the SR of the UL packet transmission through the PUSCH or PUCCH, at least one of the following embodiments may be performed.

[0299] The method may be applied to a case where a transmission priority value for UL physical signaling transmission transmitted in PUSCH or PUCCH is configured, and / or a case where a transmission priority value for UL physical signaling transmission is not configured. The method may be applied to a case where a transmission priority value for UL physical signaling related to sidelink packet transmission is configured, and / or a case where a transmission priority value for UL physical signaling transmission related to bypass packet transmission is not configured.

[0300] The following six (6) scenarios will be discussed:

[0301] 1. A case where a transmission priority value for UL physical signaling transmission is configured.

[0302] 2. A situation in which a transmission priority value for UL physical signaling transmission can be configured based on the transmission priority of a UL group (e.g., a data-carrying logical channel, a signaling-carrying logical channel, or a MAC CE) corresponding to the UL physical signaling transmission, even if the transmission priority value for the UL physical signaling transmission has not yet been configured.

[0303] 3. A case where a transmission priority value for UL physical signaling transmission is not configured.

[0304] 4. A case where a transmission priority value for UL physical signaling transmission associated with bypass packet transmission is configured.

[0305] 5. A situation in which a transmission priority value for UL physical signaling transmission associated with bypass packet transmission can be configured based on the transmission priority of a UL packet (e.g., a data bearer logical channel, a signaling bearer logical channel, or a MAC CE) corresponding to the UL physical signaling transmission associated with the bypass packet transmission, even if the transmission priority for the UL physical signaling transmission associated with the bypass packet transmission has not been configured.

[0306] 6. A case where a transmission priority value for UL physical signaling transmission related to bypass packet transmission is not configured.

[0307] In the above-mentioned cases 1 to 6, in the case where the transmission priority of UL physical signaling transmission and UL physical signaling transmission related to bypass packet transmission can be determined based on the transmission priority value, for example, in the case of a combination of cases 1 and 3, a combination of cases 1 and 4, a combination of cases 2 and 3, or a combination of cases 2 and 4, it can be determined by comparing it with a threshold value configured for UL physical signaling transmission and a threshold value configured for UL physical signaling transmission related to bypass packet transmission.

[0308] If it is determined that the transmission priority value of the UL physical signaling transmission is greater than the configured threshold and the transmission priority value of the UL physical signaling transmission related to the bypass packet transmission is less than the configured threshold, the terminal may determine to prioritize the UL physical signaling transmission. Otherwise, the terminal may determine to prioritize the UL physical signaling transmission related to the bypass packet transmission. Here, it is assumed that the larger the transmission priority value, the higher the transmission priority.

[0309] The transmission priority of the UL physical signaling transmission and the UL physical signaling transmission associated with the bypass packet transmission may be determined by comparing the transmission priority value of the UL physical signaling transmission with the transmission priority value of the UL physical signaling transmission associated with the bypass packet transmission. If it is determined that the transmission priority value of the UL physical signaling transmission is greater than the transmission priority value of the UL physical signaling transmission associated with the bypass packet transmission, the terminal may prioritize the UL physical signaling transmission. Otherwise, the terminal may prioritize the UL physical signaling transmission associated with the bypass packet transmission.

[0310] In the above cases 1 to 6, when it is impossible to determine the transmission priority of one of the UL physical signaling transmission or the UL physical signaling transmission related to the bypass packet transmission based on the transmission priority value, for example, in the case of a combination of cases 1 and 6, a combination of cases 2 and 6, a combination of cases 3 and 4, or a combination of cases 3 and 5, the terminal may compare the transmission priority value with the configured threshold value based on a link capable of configuring the transmission priority value, thereby determining the priority processing of the transmission. Here, "priority processing" or "priority processing" indicates an operation of preferentially transmitting a packet with a high transmission priority according to the identified priority.

[0311] In the case where the transmission priority value of the UL physical signaling transmission can be determined, if it is determined that the transmission priority value of the UL physical signaling transmission is greater than the configured threshold, the terminal may prioritize the UL physical signaling transmission. Otherwise, the terminal may prioritize the UL physical signaling transmission related to the bypass packet transmission.

[0312] In the case where the configurable threshold is a transmission priority value of the UL physical signaling transmission related to the bypass packet transmission, if it is determined that the transmission priority value of the UL physical signaling transmission related to the bypass packet transmission is greater than the configured threshold, the terminal may give priority to the UL physical signaling transmission related to the bypass packet transmission. Otherwise, the terminal may give priority to the UL physical signaling transmission.

[0313] In the above-mentioned situations 1 to 6, when it is impossible to determine the transmission priority of UL physical signaling transmission and UL physical signaling transmission related to bypass packet transmission based on the transmission priority value, for example, in the combination of situations 3 and 6, the terminal can arbitrarily determine the priority processing of UL physical signaling transmission and UL physical signaling transmission related to bypass packet transmission.

[0314] The priority between the UL BSR MAC CE transmitted over the UL and the SLBSR MAC CE transmitted over the UL may be determined according to the following four (4) operations:

[0315] 1. The transmission priority value for UL BSR MAC CE can be configured separately.

[0316] 2. The transmission priority value for SL BSR MAC CE can be configured separately.

[0317] 3. If the transmission priority value for UL BSR MAC CE is not configured separately, the transmission priority of UL BSR MAC CE may be configured based on the transmission priority value of the logical channel reported by UL BSR MAC CE. If one UL BSR MAC CE includes information about multiple logical channels, the transmission priority of the corresponding UL BSR MAC CE may be configured based on the transmission priority value of the maximum logical channel among the multiple logical channels.

[0318] 4. If the transmission priority value for the SL BSR MAC CE is configured separately, the transmission priority of the SL BSR MAC CE may be configured based on the transmission priority value of the logical channel reported by the SL BSR MAC CE. If one SL BSR MAC CE includes information about multiple logical channels, the transmission priority of the corresponding SL BSR MAC CE may be configured based on the transmission priority value of the logical channel with the maximum transmission priority among the multiple logical channels.

[0319] The terminal may determine the transmission priority between the UL BSR MAC CE transmitted through the UL and the SL BSR MAC Ce transmitted through the UL according to at least one of the following four (4) implementations.

[0320] 1 .Terminal can be UL BSR MAC CE transmission priority value and SL BSR MAC The transmission priority value of CE Compare the rows.

[0321] If the transmission priority value of the UL BSR MAC CE is greater than the transmission priority value of the SL BSR MAC CE, the terminal may prioritize the UL BSR MAC CE. Otherwise, the terminal may prioritize the SL BSR MAC CE.

[0322] 2. The terminal can be UL BSR MAC The transmission priority value of the CE is compared with the configured threshold and the SL BSR MAC The transmission priority value of the CE is compared with the configured threshold.

[0323] The above thresholds can be configured as the same value or different values. If it is determined that the transmission priority value of the UL BSR MAC CE is greater than the threshold and the transmission priority value of the SL BSR MAC CE is less than the threshold, the terminal can prioritize the UL BSR MAC CE. Otherwise, the terminal can prioritize the SL BSR MAC CE.

[0324] 3. The terminal can be UL BSR MAC The transmission priority value of the CE is compared with the configured threshold.

[0325] If it is determined that the transmission priority value of the UL BSR MAC CE is greater than the threshold, the terminal may process the UL BSR MAC CE preferentially. Otherwise, the terminal may process the SL BSR MAC CE preferentially.

[0326] 4. The terminal can SL BSR MAC The transmission priority value of the CE is compared with the configured threshold.

[0327] If it is determined that the transmission priority value of the SL BSR MAC CE is greater than the threshold, the terminal may process the SL BSR MAC CE preferentially. Otherwise, the terminal may process the UL BSR MAC CE preferentially.

[0328] An operating method of a terminal in a wireless communication system may include: a step of determining a priority between UL data and sidelink data; a step of transmitting data having a high priority among the UL data and the sidelink data; and a step of discarding the remaining data among the UL data and the sidelink data or transmitting the data at a lower transmission power than when the remaining data among the UL data and the sidelink data is determined to have a high priority.

[0329] If the UL data includes the PUCCH, the UL data may be determined as data having a high priority.

[0330] If the UL data does not include data other than the MAC CE, the UL data may be determined as data having a high priority.

[0331] If the UL data does not include data other than the MAC CE, the sidelink data may be determined as data having a high priority.

[0332] If the UL data does not include data other than the MAC CE and if the MAC CE belongs to a predefined group, the UL data may be determined as data having a high priority.

[0333] If the UL data does not include data other than the MAC CE and if the priority value of the sidelink data exceeds a threshold value, the sidelink data may be determined as data having a high priority.

[0334] If the UL data includes a MAC CE, the sidelink data may be determined as data having a high priority.

[0335] If the UL data includes the MAC CE, the UL data may be determined as data having a high priority.

[0336] A terminal in a wireless communication system may include a transceiver and at least one processor connected to the transceiver, wherein the at least one processor may be configured to: determine a priority between UL data and sidelink data; transmit data with a high priority among the UL data and the sidelink data; and discard the remaining data among the UL data and the sidelink data or transmit the data with a lower transmission power than when the remaining data among the UL data and the sidelink data is determined to have a high priority.

[0337] If the UL data includes the PUCCH, the UL data may be determined as data having a high priority.

[0338] If the UL data does not include data other than the MAC CE, the UL data may be determined as data having a high priority.

[0339] If the UL data does not include data other than the MAC CE, the sidelink data may be determined as data having a high priority.

[0340] If the UL data does not include data other than the MAC CE and if the MAC CE belongs to a predefined group, the UL data may be determined as data having a high priority.

[0341] If the UL data does not include data other than the MAC CE and if the priority value of the sidelink data exceeds a threshold value, the sidelink data may be determined as data having a high priority.

[0342] If the UL data includes a MAC CE, the sidelink data may be determined as data having a high priority.

[0343] If the UL data includes the MAC CE, the UL data may be determined as data having a high priority.

[0344] The UL data may include a first BSR MAC CE, the sidelink data may include a second BSR MAC CE, and the UL data and the sidelink data may be determined based on a priority value of first data to be transmitted in the UL via resources allocated in response to the first BSR and a priority value of second data to be transmitted in the sidelink via resources allocated in response to the second BSR.

[0345] The method of the present disclosure may be implemented as hardware, software, or a combination of hardware and software.

[0346] When the method is implemented by software, a computer-readable storage medium for storing one or more programs (software modules) may be provided. One or more programs stored in the computer-readable storage medium may be configured to be executed by one or more processors in an electronic device. One or more programs may include instructions that cause the electronic device to perform the method according to the embodiments of the present disclosure as defined by the attached claims and / or disclosed herein.

[0347] Programs (software modules or software) may be stored in non-volatile memory, including random access memory and flash memory, read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), magnetic disk storage, compact disc-ROM (CD-ROM), digital versatile disc (DVD) or other types of optical storage devices, or magnetic tape cassettes. Any combination of some or all of these may form a memory storing a program. In addition, multiple such memories may be included in an electronic device.

[0348] In addition, the program may be stored in an attachable storage device that can be accessed through a communication network, such as the Internet, an intranet, a local area network (LAN), a wide area network (WAN), and a storage area network (SAN), or a combination thereof. Such a storage device may access the electronic device via an external port. In addition, a separate storage device on a communication network may access the portable electronic device.

[0349] According to exemplary embodiments, the components included in the present disclosure are expressed as singular or plural. However, the selection of singular or plural is for the convenience of properly describing the presented situation, and the embodiments of the present disclosure are not limited to a single element or multiple elements thereof. In addition, multiple elements expressed in the specification may be configured as a single element, or a single element in the specification may be configured as multiple elements.

[0350] While the present disclosure has been particularly shown and described with reference to certain embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents.

Claims

1. A method performed by a terminal in a wireless communication system, the method comprising: identifying a first highest priority value of at least one logical channel of uplink (UL) transmissions and a second highest priority value of at least one logical channel of sidelink transmissions; In a case where the terminal cannot transmit the UL transmission and the sidelink transmission simultaneously, transmitting the UL transmission or the sidelink transmission having a higher priority of the first highest priority value and the second highest priority value; as well as transmitting the UL transmission and the sidelink transmission by reducing the transmission power of lower priority transmissions among the UL transmission and the sidelink transmission so that the total transmission power does not exceed the maximum transmission power, if the total transmission power of the UL transmission and the sidelink transmission exceeds a maximum transmission power, The priority of the UL transmission or the priority of the sidelink transmission is determined in descending order according to the following items: the media access control MAC control element CE of the BSR other than the buffer status report BSR included for filling, the MAC CE of the sidelink BSR other than the sidelink BSR included for filling, the MAC CE of the UL BSR included for filling, and the MAC CE of the sidelink BSR included for filling.

2. The method according to claim 1, further comprising: In case the first highest priority value is not lower than a first threshold and the second highest priority value is lower than a second threshold, it is identified that the priority of the sidelink transmission is higher than the priority of the UL transmission.

3. The method according to claim 2, in, The first threshold and the second threshold are configured for the terminal.

4. The method according to claim 1, in, The priority value of at least one logical channel used for the UL transmission is one of 16 values, and The priority value of at least one logical channel used for the sidelink transmission is one of 8 values.

5. The method according to claim 1, in, The first highest priority value is a priority value of a logical channel having a highest priority among the at least one logical channel of the UL transmission, and The second highest priority value is a priority value of a logical channel with the highest priority among the at least one logical channel of the sidelink transmission.

6. The method according to claim 1, wherein: Decreasing priority values ​​indicate higher priority.

7. The method according to claim 6, in, a priority of the scheduling request for the at least one UL resource for the UL transmission or the at least one sidelink resource for the sidelink transmission is identified based on a priority of a logical channel associated with the scheduling request, and The scheduling request is used to request at least one UL resource for the UL transmission or at least one side link resource for the side link transmission from the base station.

8. A terminal in a wireless communication system, the terminal comprising: Transceiver; as well as A controller is coupled to the transceiver and configured to: identifying a first highest priority value of at least one logical channel of uplink (UL) transmissions and a second highest priority value of at least one logical channel of sidelink transmissions; in a case where the terminal cannot transmit the UL transmission and the sidelink transmission simultaneously, transmitting the UL transmission or the sidelink transmission having a higher priority of the first highest priority value and the second highest priority value; and in a case where the total transmission power of the UL transmission and the sidelink transmission exceeds a maximum transmission power, transmitting the UL transmission and the sidelink transmission by reducing the transmission power of the lower priority transmission of the UL transmission and the sidelink transmission so that the total transmission power does not exceed the maximum transmission power, The priority of the UL transmission or the priority of the sidelink transmission is determined in descending order according to the following items: the media access control MAC control element CE of the BSR other than the buffer status report BSR included for filling, the MAC CE of the sidelink BSR other than the sidelink BSR included for filling, the MAC CE of the UL BSR included for filling, and the MAC CE of the sidelink BSR included for filling.

9. The terminal according to claim 8, wherein: The controller is also configured to: In case the first highest priority value is not lower than a first threshold and the second highest priority value is lower than a second threshold, it is identified that the priority of the sidelink transmission is higher than the priority of the UL transmission.

10. The terminal according to claim 9, wherein: The first threshold and the second threshold are configured for the terminal.

11. The terminal according to claim 8, in, The priority value of at least one logical channel used for the UL transmission is one of 16 values, and The priority value of at least one logical channel used for the sidelink transmission is one of 8 values.

12. The terminal according to claim 8, in, The first highest priority value is a priority value of a logical channel having a highest priority among at least one logical channel of the UL transmission, and The second highest priority value is a priority value of a logical channel with the highest priority among at least one logical channel transmitted with the sidelink.

13. The terminal according to claim 8, wherein: Decreasing priority values ​​indicate higher priority.

14. The terminal according to claim 13, in, a priority of the scheduling request for the at least one UL resource for the UL transmission or the at least one sidelink resource for the sidelink transmission is identified based on a priority of a logical channel associated with the scheduling request, and The scheduling request is used to request at least one UL resource for the UL transmission or at least one side link resource for the side link transmission from the base station.

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