COMMUNICATION DEVICE AND COMMUNICATION METHOD

Abstract

This communication device comprises a control circuit and a transmission circuit. The control circuit determines which of a plurality of communications will be prioritized, including the transmission and / or reception of information, to adjust resource allocation among the communication devices in the side-link communication. A communication circuit carries out the communication according to the determination of the control circuit.

Description

COMMUNICATION DEVICE AND COMMUNICATION METHOD > tü r\ c N. ac -jcu σ Field of Invention This description relates to a communication device and a method of communication. Background of the Invention The Third Generation Partnership Project (3GPP), an international standards development organization, has studied the development of the 5G communication system in terms of both the development of LTE / LTE-advanced systems and New Radio Access Technology (also referred to as New RAT or NR), which is a new method not necessarily compatible with previously existing LTE / LTE-advanced systems (see, for example, Non-Patent Literature (hereafter referred to as NPL) 1). Furthermore, 3GPP has explored vehicle-to-X (V2X) support in the advancement of LTE. V2X support in NR, which utilizes a wider bandwidth, has also been studied. Additionally, not only V2X but also communication expansion using a sidelink (SL) has been explored (e.g., see NPL2). Ref. 349643 List of appointments Literature that is not patented NPL1 3GPP TR 38.885 V16.00, Study on NR Vehicle-toEverythrng (V2X) (Publication 16), 2019-03 NPL2 RP-201385, WID revision: NR sidelink enhancement, LG Electronics, 3GPP TSG RAN Meeting #88e, Electronic Meeting, June 29 to July 3, 2020 Summary of the Invention There is a goal, however, for further study to increase the performance of side-link communication. A non-limiting modality of the present description makes it easier to supply a communication apparatus and a communication method, each capable of increasing the performance of side-link communication. A communication device according to a modality of the present description includes: control circuitry which, in operation, determines which of a plurality of communications, including at least one for transmitting and / or receiving information, to prioritize in order to adjust the use of resources among communication devices in a side-link communication; and communication circuitry which, in operation, performs the communication according to - 3 the determination of the control circuitry. Note that these generic or specific aspects can be obtained by a system, an apparatus, a method, an integrated circuit, a computer program or a recording medium, and also by a combination of the system, the apparatus, the method, the integrated circuit, the computer program and the recording medium. According to an exemplary modality of the present description, it is possible to increase the functionality of the side link communication. The additional benefits and advantages of the exemplary modalities described will become evident from the description and figures. These benefits and / or advantages can be obtained individually from the various modalities and features described and shown in the figures; not all of these need to be provided in order to obtain one or more of these benefits and / or advantages. Brief Description of the Figures Figure 1 illustrates an exemplary channel representation in a side link interval; Figure 2 is a block diagram illustrating an exemplary configuration of a part of a terminal; Figure 3 is a block diagram illustrating an exemplary base station configuration; Figure 4 is a block diagram illustrating the first example of terminal configuration; Figure 5 is a block diagram illustrating the second example of terminal configuration; Figure 6 is a block diagram illustrating the third example of terminal configuration; Figure 7 is a block diagram illustrating the fourth example of terminal configuration; Figure 8 is a sequence diagram illustrating an exemplary inter-EU coordination operation; Figure 9 illustrates an exemplary configuration of a physical side-link feedback channel (PSFCH); Figure 10 illustrates an exemplary representation of a resource for transmitting inter-EU resource adjustment information; Figure 11 illustrates an exemplary operation according to the present description; Figure 12 illustrates an exemplary operation according to a variation; Figure 13 illustrates an exemplary operation according to another variation; Figure 14 illustrates an exemplary inter-EU coordination operation based on a priority; Figure 15 is an exemplary architecture of a 3GPP NR system; - Figure 16 schematically illustrates a functional division between NG-RAN and 5GC; Figure 17 is a sequence diagram of a Radio Resource Control (RRC) connection for an installation / reconfiguration procedure; Figure 18 schematically illustrates usage scenarios for enhanced mobile broadband (eMBB), massive machine-type communications (mMTC), and ultra-reliable low-latency communications (URLLC); and Figure 19 is a block diagram illustrating an exemplary 5G system architecture for a non-roaming scenario. Detailed Description of the Invention The modalities of the present description will now be described in detail, with reference to the figures. Description of V2X In V2X, communications are assumed to be between vehicles (V2V: vehicle to vehicle), road to vehicle (V2I: vehicle to infrastructure), pedestrian to vehicle (V2P: vehicle to pedestrian) and inter-vehicle networks (V2N: vehicle to network), and in V2V, V2I and V2P, terminals can communicate (for example, by at least one transmit and receive) MA / a / ZUZO / UlUOOl directly with each other using a link called a side link (side link: SL) or PC5 without passing through a network with a base station. In V2N, communication is assumed to take place over a link called Uu between a base station (e.g., gNB in ​​NR and eNB in ​​LTE) and a terminal. For example, a resource used for a sidelink is configured based on a bandwidth share (SL BWP) and a resource pool. The SL BWP specifies a frequency band that can be used for the sidelink and can be configured separately from a dedicated bandwidth (DL BWP) or upper limit (UL BWP) configured for base-to-terminal (Uu) operation. The frequency band may overlap with an upper limit (UL BWP). The resource pool includes, for example, a resource at a specified frequency address and time address for a resource in the SL BWP. Multiple resource pools can be configured for a terminal. Frequency resources within a resource pool can be divided into units called subchannels, for example, and resource allocation can be configured in subchannel units. A subchannel can include multiple physical resource blocks (PRBs). Description of the Lateral Link in NR For NR's V2X, it has been mentioned that it supports unicast, group broadcast, and broadcast in sidelink communication (e.g., at least one transmit and receive). In unicast, for example, a one-to-one transmission is assumed from a transmitting terminal (e.g., also referred to as a UE transmitter or UE TX) to a receiving terminal (e.g., a UE receiver or UE RX). In group broadcast, for example, a transmission is assumed from a transmitting terminal to a plurality of receiving terminals belonging to a certain group. In broadcast, for example, transmission is assumed from a transmitting terminal without specifying a receiving terminal. Note that UE is an abbreviation for user equipment and is an example of a terminal. SL Channel Description For an NR SL, the configuration of channels such as a physical SL control channel (PSCCH), a physical SL shared channel (PSSCH), a physical SL feedback channel (PSFCH), and a physical SL broadcast channel (PSBCH) are considered. The PSCCH is an exemplary control channel in a SL, and the PSSCH is an exemplary data channel in a SL. The PSFCH is an exemplary channel used for transmitting a feedback signal in a SL, and the PSBCH is an exemplary broadcast channel used for transmission that does not specify a receiving terminal. It can be observed in the following description that the terms "signal" and "information" can be used interchangeably, depending on the context. For example, in a PSSCH, a control signal (or control information) called side-link control information (SCI) is represented. The SCI includes, for example, information (or a parameter) about at least one of the transmit and receive aspects of a data signal (e.g., PSSCH), such as information about the allocation of resources for a PSSCH. The information content of the SCI, which will be described later, can be divided (or classified) into, for example, first information (or control information) and second information (or control information). In other words, the SCI may include, for example, first control information and second control information regarding the SL. The second control information can be considered exemplary information related to the first control information. The first control information and the second control information can be referred to as, for example, first-stage SCI and second-stage SCI, respectively. The first-stage SCI can be represented by a PSCCH, which is an exemplary SL control channel, and the second-stage SCI can be represented by a PSSCH, which is an exemplary SL data channel. In other words, the SCI can be separated and represented by a PSCCH and a PSSCH. Note that the term representation may be interchanged with another appropriate term such as assignment or pattern (of representation) (the same applies below) by a person skilled in the field. In a PSSCH, a data signal or a data signal and SCI (e.g., a second-stage SCI) are represented, for example. In a PSFCH, for example, a feedback signal is represented (e.g., a hybrid automatic repeat request (HARQ) feedback) for a PSSCH (e.g., a data signal). The feedback signal may include, for example, a response signal (e.g., ACK / NACK information, also referred to as HARQ-ACK) indicating an acknowledgment (ACK) or non-acknowledgment (NACK). It is assumed that the feedback signal is used, for example, when a PSSCH is transmitted and received by unicast and group broadcast. The ACK and NACK can be referred to as a HARQ-ACK and a - 10 HARQ-NACK, respectively, for example. In a PSBCH, for example, a broadcast signal is represented that does not specify a receiving terminal. The PSBCH is transmitted, for example, along with a primary sidelink synchronization signal (S-PSS) and a secondary sidelink synchronization signal (S-SSS), which are synchronization signals and can be collectively referred to as a sidelink synchronization block (S-SSB). SCI Description The following is a non-limiting example of information included in each of the first-stage SCI and second-stage SCI. First-stage SCI priority - 3 bits frequency resource allocation time resource allocation - 5 bits or 9 bits resource reservation period [log2(N_(reservePeriod)] bits or 0 bits DMRS pattern [x] bits or 0 bits second-stage SCI format 2 bits Beta_offset indicator 2 bits DMRS port number 1 bit modulation and encoding scheme - 5 bits additional MCS table indicator - 2 bits or 0 bits PSFCH general information indicator - 1 bit reserved - [sl-NumReservedBits] bits or 0 bits second-stage SCI In the second-stage SCI, for example, two types of SCI formats can be prepared as follows: format 2-A and SCI format 2-B. SCI, format 2-A HARQ process number - [log_2(N_process)] bits new data indicator - 1 bit redundancy version - 2 bits source ID - 8 bits destination ID - 16 bits HARQ feedback indicator enabled / disabled - 1 bit broadcast type indicator - 2 bits CSI request - 1 bit SCI, format 2-B process number HARQ - [log_2(N_process)] bits new data indicator bit - 12 redundancy version - 2 bits Source ID - 8 bits Destination ID - 16 bits HARQ Enabled / Disabled Feedback Indicator - 1 bit Zone ID - 12 bits; Communication range requirement - 4 bits In a V2X SL communication, for example, one terminal confirms the usage (or reservation) status of a resource by another terminal through detection, and then determines which resource to use for transmission. By splitting the SCI information content into two pieces, the number of bits and the size of the first-stage SCI can be reduced, thus minimizing the area used for detection. For example, the first-stage SCI can be represented by a PSCCH, and the second-stage SCI can be represented by a PSSCH (or be part of a PSSCH). Note that DMRS stands for Demodulation Reference Signal, and CSI stands for Channel State Information. Figure 1 illustrates an exemplary representation of a PSCCH, a PSSCH, and a PSFCH within a range. For example, the PSFCH is not represented in some cases, depending on the configuration. Furthermore, the number of PSSCH symbols is - 13 variable, depending on the configuration. Additionally, the representation of the second-stage SCI can be changed based on the representation of a DMRS (not illustrated) in the PSSCH, for example. For instance, the first-stage SCI can be represented from a lower frequency resource compared to the frequency resource to which the PSSCH has been assigned. An interval is configured to, for example, 14 symbols (12 symbols when an extended cyclic prefix (CP) is applied). SL Mode Description SL communication includes, for example, two modes (e.g., mode 1 and mode 2). In mode 1, for example, the base station determines (in other words, plans) a resource to be used by the terminal in an SL (for example, referred to as an SL resource). In mode 2, for example, the terminal selects (or determines) a resource to be used from the SL from the resources in a preconfigured pool. In other words, in mode 2, the base station does not need to schedule a SL resource. For example, mode 1 is supposed to be used in an environment where the terminal and base station are connected to each other and the terminal performs sidelink communication and can receive indication (or - 14 notification) from the base station. On the other hand, in mode 2, for example, the terminal can determine a resource to be used for SL even when no indication is transmitted from the base station. This allows sidelink communication to include terminals under the control of different operators or terminals out of coverage, for example. The side link has been described above. General Information about the Communication System A communication system according to the present invention includes, for example, a terminal 200 illustrated in Figure 2 and a base station 100 illustrated in Figure 3. The number of terminals 200 can be one or more, but there are two or more when the focus is on side-link communication. It can be observed that the base station 100 and the terminal 200 are each an example of a communication device. Figure 2 is a block diagram illustrating an exemplary configuration of a portion of terminal 200 according to the modality. The terminal 200 illustrated in Figure 2 may include, for example, a controller (or control circuitry) 20I and a communicator (or communication circuitry) 20B. Controller 20A determines and generates, from the perspective of transmission terminal 200 of a link - 15 Lateral, information for adjusting (or carrying out coordination control of) use (or use) of resources in lateral link communication between terminals 200. This information is exemplary information on the coordinated use of lateral link resources between terminals and can be understood as a type of control information transmitted and received between terminals 200. In addition, this information can be referred to as inter-EU resource adjustment information, resource coordination control information or inter-EU coordination information for convenience, for example. Controller 20A determines which of a plurality of communications, including, for example, at least one transmission and reception of inter-UE resource adjustment information, is prioritized from the perspective of a side-link transmitting terminal. The communicator 20B performs the communication, for example, according to the determination of the controller 20A from the perspective of a side-link transmission terminal. Furthermore, communicator 20B receives, from the perspective of receiving terminal 200 of a side link, inter-UE resource adjustment information transmitted by another terminal 200. In this way, communicator 20B can be understood to correspond to a - 16 exemplary receiving circuitry that receives inter-EU resource adjustment information from the perspective of receiving terminal 200. Furthermore, from the perspective of a receiving terminal on a sidelink, controller 20A determines a resource used for sidelink communication (e.g., transmission) based on the inter-UE resource adjustment information received by communicator 20B. For example, controller 20A stops or starts PSSCH transmission based on the inter-UE resource adjustment information received. Base station 100 configuration Figure 3 is a block diagram illustrating an exemplary configuration of base station 100 according to the modality. As illustrated in Figure 3, base station 100 includes, for example, an inter-UE resource adjustment information configurator 101, an error-correction encoder 103, a modulator 104, a transmitter 106, a receiver 107, a demodulator 108, and an error-correction decoder 110. The inter-EU resource adjustment information configurator 101 determines whether to cause terminal 200 to transmit inter-EU resource adjustment information based on a use case (illustration omitted) or information reported from terminal 200, for example, information such as - 17 as a feature or capability of terminal 200. When it is determined to cause terminal 200 to transmit inter-UE resource adjustment information, the inter-UE resource adjustment information configurator 101 transmits, to the error-correction encoder 103, information about a transmission configuration of the inter-UE resource adjustment information such as, for example, a higher layer signaling (e.g., RRC). It will be observed that, in this mode, the information to be transmitted at a higher layer (e.g., RRC) is generated in the inter-UE resource adjustment information configurator 101, and the transmission of the inter-UE resource adjustment information is configured at terminal 200. However, this configuration can be a configuration at an application layer called preconfigured, or it can be preconfigured in a subscriber identity module (SIM), and therefore terminal 200 can operate without a configuration from base station 100, for example. The error-correction encoder 103 introduces, for example, a transmission data signal (DL data signal) and an upper layer signaling, performs error correction encoding on the introduced signal, and transmits the encoded signal to modulator 104. - 18 For example, modulator 104 performs modulation processing on the signal introduced from the error-correction encoder 103 and transmits the modulated data signal to transmitter 106. For example, transmitter 106 performs radio transmission processing such as upconversion and amplification of the signal introduced from a signal allocator 105 and transmits the radio signal from an antenna to terminal 200. For example, receiver 107 receives a signal transmitted from terminal 200 by means of an antenna, performs radio reception processing such as low-noise amplification and downconversion, and transmits the received signal to demodulator 108. Demodulator 108, for example, performs demodulation processing on the input signal and transmits the resulting signal to the error-correction decoder 110. For example, the error-correction decoder 110 decodes the input signal from the demodulator 108 to obtain a received data signal (UL data signal) from terminal 200. It is observed that, in mode 1, the SCI information transmitted by terminal 200 on the sidelink can be generated by base station 100 (for example, - 19 configurator 101 of inter-UE resource adjustment information, or other block not illustrated). The SCI generated by base station 100 can be transmitted to terminal 200, for example, as an upper layer signal or a physical layer signal (for example, physical downlink control channel (PDCCH)). Terminal 200 configuration Figures 4, 5, and 6 are block diagrams illustrating the first, second, and third configurations of terminal 200, respectively, according to the modality described herein. In side-link communication, terminal 200 can be either a transmitting or receiving terminal. First Configuration of Terminal 200 For example, terminal 200 in the first configuration illustrated in Figure 4 is assumed to at least support the reception of inter-UE resource adjustment information transmitted by another terminal 200, but does not support the reception of signals from some channels (e.g., PSSCH and PSCCH). The Terminal 200 does not need to perform detection, and can therefore reduce energy consumption, for example. For instance, it is advantageous that when a vehicle and a smartphone (e.g., a pedestrian's UE) communicate with each other, the smartphone can - 20 Perform sidelink transmission without performing detection. It can be observed that the term detection can be understood as receiving the first stage SCI from another terminal 200 in a certain time section. In Figure 4, terminal 200 includes, for example, a receiver 201, a signal splitter 202, an inter-UE resource setting information configurator 205, an inter-UE resource setting information receiver 206, an error-correction encoder 207, a modulator 208, a signal allocator 209, and a transmitter 210. For example, receiver 201 receives a receive signal by means of an antenna, performs radio receive processing such as low-noise amplification and downconversion on the receive signal, and then transmits the signal to signal splitter 202. For example, signal separator 202 separates the inter-UE resource adjustment information from the output signal of receiver 201 and transmits the inter-UE resource adjustment information to receiver 206. For example, inter-EU resource adjustment information configurator 205 configures inter-EU resource adjustment information receiver 206 to receive inter-EU resource adjustment information via an upper-layer signal from base station 100 or another terminal - 21 200 or by a preconfiguration called preconfigured. For example, inter-EU resource adjustment information receiver 206 requests signal allocator 209 to reassign a resource when it receives a signal indicating that the resource allocated by using a PSCCH is not preferred (or is not suitable). For example, the error-correction encoder 207 inputs a data signal to be transmitted, performs error correction encoding on the data signal, and transmits the data signal to the modulator 208. For example, modulator 208 modulates the signal introduced from the error-correction encoder 207 and transmits the modulated signal to the signal allocator 209. For example, signal allocator 209 assigns the signal input from modulator 208 to a resource used for transmission. When resource reallocation is requested from inter-UE resource adjustment information receiver 206, signal allocator 209 changes the resource allocation accordingly. The signal assigned to the resource is then transmitted to transmitter 210, for example. For example, transmitter 210 performs radio transmission processing such as amplification and boost conversion on the signal introduced from a signal allocator 209 and transmits the radio signal from an antenna. - 22 Second configuration of terminal 200 The 200 terminal in the second configuration illustrated in Figure 5 receives inter-UE resource adjustment information from another 200 terminal and supports receiving signals from channels not supported in the first configuration (e.g., PSSCH and PSCCH). Furthermore, the 200 terminal in the second configuration supports, for example, detection processing and data reception. As illustrated in Figure 5, the terminal 200 of the second configuration includes, for example, the receiver 201, the signal splitter 202, the demodulator 303, the error-correction decoder 204, the inter-UE resource adjustment information configurator 205, the inter-UE resource adjustment information receiver 206, the error-correction encoder 207, the modulator 208, the signal allocator 209, the transmitter 210, the detection processor 211, and the inter-UE resource adjustment information generator 212. For example, receiver 201 receives a receive signal by means of an antenna, performs radio receive processing such as low noise amplification and downconversion on the receive signal, and then transmits the signal to signal splitter 202. For example, in the received signal, the separator of Signal 202 transmits the received data signal to demodulator 203 and transmits the inter-UE resource adjustment information to receiver 206. Additionally, for example, signal splitter 202 separates the first-stage SCI representing a PSSCH and the second-stage SCI representing a portion of a PSSCH from the received signal, and transmits the first-stage SCI and the second-stage SCI to detector processor 211 as detection information. For example, demodulator 203 performs demodulation processing on the signal (e.g., data signal) introduced from signal splitter 202, and transmits the demodulated signal to error-correction decoder 204. For example, the error-correction decoder 204 decodes the demodulated signal fed in from demodulator 203 and transmits the decoded signal as received data. For example, when there is input from configurator 205 containing inter-UE resource adjustment information, discovery processor 211 obtains resource allocation information so that each resource is reserved, based on the first-stage SCI. Additionally, discovery processor 211 obtains at least one transmission source ID (source ID) and destination ID from - 24 transmission (destination ID) based on the second stage SCI and detects if the resource is preferred for transmission. The term "resource not preferred for transmission" means that, for example, an event such as a resource collision or mismatched transmit and receive timings between a transmitting and receiving terminal is detected. When this event is not detected, it can be determined that the resource is preferred for transmission. When a resource is determined not to be preferred for transmission, the detection processor 211 transmits the detection to the inter-UE resource adjustment information generator 212, for example. It can be observed that the terms (the resource is) preferred / not preferred (for transmission) can be interchanged with other terms such as desirable / undesirable, adapted / not adapted, and recommended / not recommended, for example. Furthermore, for example, when the detection processor 211 detects, from the resource allocation information, that there is a resource allocation directed to terminal 200, as illustrated in Figure 5, the detection processor 211 indicates the resource information to the signal separator 202. This indication allows the signal separator 202 to separate a represented signal to an indicated resource. - 25 from the detection processor 211 from a receiving signal. For example, the inter-EU resource adjustment information configurator 205 configures the inter-EU resource adjustment information receiver 206 and the detection processor 211 to receive inter-EU resource adjustment information by an upper-layer signal from the ICO base station or other terminal 200 or by a preconfiguration called preconfigured. For example, inter-EU resource adjustment information receiver 206 requests signal allocator 209 to reassign a resource when it receives a signal indicating that the resource allocated by using a PSCCH is not preferred for transmission. For example, the inter-UE resource adjustment information generator 211 generates, when it receives an indication from the detection processor 211 that there is a resource allocation that is not preferred for transmission, inter-UE resource adjustment information to indicate, to another terminal 200, the resource that is not preferred for transmission and transmits the inter-UE resource adjustment information to a signal allocator 209. For example, signal allocator 209 allocates the signal input from modulator 208 to a used resource MA / a / ZUZO / UlUOOl for transmission. Also, for example, when reassignment - When resource 26 is requested from the inter-EU resource adjustment information receiver 206, the signal allocator 209 changes the resource allocation. When inter-EU resource adjustment information is entered from the inter-EU resource adjustment information generator 212, the signal allocator 209 assigns the inter-EU resource adjustment information to a resource used for transmission to another terminal 200, for example. The signal assigned to the resource is then transmitted to the transmitter 210, for example. In the signal allocator 209, ACK / NACK information can be assigned to an SL feedback channel (e.g., PSFCH), for example. It will be noted that the error-correction encoder 207, modulator 208, and transmitter 210 may be the same as the error-correction encoder 207, modulator 208, and transmitter 210 described above with reference to Figure 4, respectively. Third configuration of terminal 200 Terminal 200 in the third configuration illustrated in Figure 6 supports, for example, communication with base station 100 in addition to sidelink communication with another terminal 200. A link between base station 100 and terminal 200 is also referred to as a Uu link, for example. Communication using a Uu link - 27 can be referred to as a Uu communication, for example. It can be understood that the configuration illustrated in Figure 6 corresponds to a configuration in which a demodulator, an error-correction decoder, an error-correction encoder, and a modulator are configured for each of a Uu link and an SL as individual blocks in the second configuration illustrated in Figure 5. It can be understood that, in Figure 6, the blocks indicated by the same reference numbers are those used in Figure 5 that correspond to the blocks described in Figure 5. In Figure 6, terminal 200 includes, for example, a receiver 201, a signal splitter 202, a demodulator Uu 203-1, a demodulator SL 203-2, an error-correction decoder Uu 204-1, and an error-correction decoder SL 204-2. Terminal 200 also includes, for example, an inter-UE resource setting information configurator 205, an inter-UE resource setting information receiver 206, a detection processor 211, and an inter-UE resource setting information generator 212. In addition, terminal 200 includes a Uu 207-1 error-correction encoder, an SL 207-2 error-correction encoder, a Uu 208-1 modulator, an SL 208-2 modulator, a signal allocator 209, and a transmitter 210, for example. - 28 For example, receiver 201 receives a receive signal by means of an antenna, performs radio receive processing such as low noise amplification and downconversion on the receive signal and then transmits the signal to signal splitter 202. For example, the signal separator 202 separates the inter-UE resource adjustment information, a Uu link signal and an SL signal from the signal received by receiver 201 and transmits the inter-UE resource adjustment information to receiver 206, and the Uu link signal to demodulator Uu 203-1. Furthermore, for example, signal splitter 202 separates the data portion destined for terminal 200 on a PSSCH from the SL signal and transmits the separated data portion to the SL demodulator 203-2. Additionally, for example, signal splitter 202 separates the first-stage SCI destined for a PSSCH and the second-stage SCI destined for a portion of a PSSCH from the received signal and transmits the first-stage SCI and the second-stage SCI to the detection processor 211 as detection information. For example, the demodulator Uu 203-1 performs demodulation processing on the signal introduced from the signal separator 202, and transmits the demodulated signal to the error-correction decoder Uu 204-1. The Uu 204-1 error-correction decoder - 29 decodes the demodulated signal introduced from demodulator Uu 203-1 and transmits the decoded signal. In the decoded signal, the upper layer signaling in the decoded signal is transmitted to receiver 206 for inter-UE resource adjustment information, for example. For example, the SL 203-2 demodulator performs demodulation processing on the signal introduced from the signal separator 202, and transmits the demodulated signal to the SL 204-2 error-correction decoder. For example, the error-correction decoder SL 204-2 decodes the demodulated signal fed from the SL 203-2 demodulator and performs error determination, such as CRC, on the decoded signal. As a result of the error determination, a signal indicating that there is no error is transmitted as a received data signal from SL. The inter-UE resource adjustment information configurator 205 configures the inter-UE resource adjustment information receiver 206 and the detection processor 211 to receive inter-UE resource adjustment information via a higher-layer control signal introduced from the error-correction decoder Uu 204-1, a higher-layer signal transmitted from another terminal 200, a SIM configuration, or a preconfigured application-layer configuration. It is noted that the - Terminal 30 200 can use preconfigured information without receiving configuration information to receive inter-EU resource adjustment information. For example, inter-EU resource adjustment information receiver 206 requests signal allocator 209 to reassign a resource when it receives a signal indicating that the resource allocated by using a PSCCH is not preferred for transmission. For example, the Uu 207-1 error-correction encoder inputs a Uu link transmission data signal (UL data signal), performs error correction by encoding over the transmission signal, and transmits the encoded signal to the Uu 208-1 modulator. For example, modulator Uu 208-1 modulates the signal introduced from error-correction encoder Uu 207-1 and transmits the modulated signal to signal allocator 209. For example, the SL 207-2 error-correction encoder inputs an SL transmit data signal (SL data signal), performs error correction by encoding on the transmit signal, and transmits the encoded signal to the SL 208-2 modulator. For example, the SL 208-2 modulator modulates the signal introduced from the SL 207-2 error-correction encoder and transmits the modulated signal to the 209 signal allocator. For example, the 212 information generator of - 31 inter-UE resource adjustment generates, when it receives an indication from the detection processor 211 that there is a resource allocation that is not preferred for transmission, inter-UE resource adjustment information to indicate, to another terminal 200, that the resource is not preferred for transmission, and transmits the inter-UE resource adjustment information to the signal allocator 209. For example, signal allocator 209 assigns the signals received from modulator Uu 208-1 and modulator SL 208-2 to a resource used for transmission. Furthermore, for example, when resource reallocation is requested from inter-UE resource adjustment information receiver 206, signal allocator 209 changes the resource allocation. When inter-EU resource adjustment information is entered from the inter-EU resource adjustment information generator 212, the signal allocator 209 assigns, for example, inter-EU resource adjustment information to a resource used for transmission to another terminal 200. The signal assigned to the resource is then transmitted to the transmitter 210, for example. In the signal allocator 209, ACK / NACK information can be assigned to an SL feedback channel (e.g., PSFCH), for example. For example, the 210 transmitter performs - 32 Radio transmission processing such as amplification and boost conversion on the input signal from the signal allocator 209 and transmits the radio signal from an antenna. It is observed that, although a demodulator, an error-correction decoder, an error-correction encoder, and a modulator are individual blocks for each of a Uu link and an SL in the configuration illustrated in Figure 6, some or all of the blocks may be shared. Furthermore, inter-EU resource adjustment information is not limited to cases where it is received by Terminal 200 as upper-layer signaling. For example, inter-EU resource adjustment information can be preconfigured in the SIM or preconfigured in Terminal 200 by an application layer called preconfigured. Fourth configuration of terminal 200 Terminal 200 of the fourth configuration illustrated in Figure 7 differs from the configuration illustrated in Figure 5 in that terminal 200 additionally includes a priority determiner 213. Note that, in Figure 7, the blocks indicated by the same reference numbers can be understood to be those used in Figure 5 and correspond to the blocks - 33 described in figure 5. In the fourth configuration, for example, receiver 201 receives a receive signal by means of an antenna, performs radio receive processing such as low noise amplification and downconversion on the receive signal, and then transmits the signal to signal splitter 202. In addition, for example, receiver 201 switches a receive time or the receive timing of a signal according to what is entered from priority determiner 213. For example, when there is input from the inter-UE resource adjustment information configurator 205, the discovery processor 211 obtains resource allocation information, such as which resource is reserved, based on the first-stage SCI. Additionally, the discovery processor 211 obtains a transmission source ID (source ID) based on the second-stage SCI, for example, and detects whether the resource is preferred for transmission. When the resource is detected as not preferred for transmission, the discovery processor 211 transmits information about the detection to the inter-UE resource adjustment information generator 212 and the priority determinator 213, for example. Furthermore, for example, when the detection processor 211 detects from the information of - 34 Resource allocation, that there is a resource allocation directed to terminal 200 illustrated in figure 7, the detection processor 211 indicates the resource information to the signal separator 202. This indication allows the signal separator 202 to separate a signal represented for the indicated resource from the detection processor 211 from the receive signal. For example, priority determiner 213 establishes a priority when inter-UE resource adjustment information and a resource from another signal are transmitted and received on the same symbol or on overlapping resources. The result of this determination (referred to as priority information) can be transmitted to signal allocator 209, for example. Furthermore, priority determiner 213 transmits, for example, a signal for switching between transmit and receive, according to the priority information, to either or both of transmitter 210 and / or receiver 201. For example, signal allocator 209 assigns the signal input from modulator 208 to a resource used for transmission. Furthermore, for example, when resource allocation is requested from inter-UE resource adjustment information receiver 206, signal allocator 209 changes the resource allocation. When the resource adjustment information - 35 inter-UE is introduced from the inter-UE resource adjustment information generator 212, the signal allocator 209 assigns, for example, the inter-UE resource adjustment information to a resource used for transmission to another terminal 200. The assignment of a signal or information to a resource herein can be performed according to the input from the priority determinator 213, for example. The signal assigned to the resource is transmitted to the transmitter 210, for example. Note that, for example, ACK / NACK information can be assigned to an SL feedback channel (e.g., PSFCH) on signal allocator 209. For example, transmitter 210 performs radio transmission processing such as amplification and boost conversion on the input signal from signal allocator 209 and transmits the radio signal from an antenna. Additionally, for example, transmitter 210 switches a transmission time or transmission timing according to the input from priority determiner 213. It can be seen that priority determinator 213 and the operation related to priority determinator 213 can be applied, for example, to the first configuration illustrated in Figure 4 and the third configuration illustrated in Figure 6. Description of Inter-EU Coordination For example, as illustrated in Figure 8, the first terminal (UE-A) is considered to transmit inter-UE resource adjustment information to the second terminal (UE-B) (S102) and UE-B uses the inter-UE resource adjustment information received from UE-A when UE-B selects a resource used for data transmission (S103) to UE-A. For example, when UE-B cannot perform sufficient detection, or when it is preferable to reduce energy consumption, UE-B can use the inter-UE resource adjustment information received from UE-A in order to reduce the detection frequency. For example, UE-B can activate or request UE-A, in advance, to transmit inter-UE resource adjustment information to UE-B (S101). UE-B can determine a resource used for transmission based on the inter-UE resource adjustment information received from UE-A, or it can autonomously determine a resource used for transmission without using the inter-UE resource adjustment information received from UE-A. For example, the following three methods are considered methods for transmitting inter-EU resource adjustment information. Type A: UE-A transmits a preferred resource for transmission by UE-B to UE-B. - 37 Type B: UE-A transmits a non-preferred resource for transmission by UE-B to UE-B. Type C: UE-A transmits information from a UE-B resource and collides with another resource for UE-B. The distinction between Type B and Type C is not necessarily clear, since a non-preferred resource for UE-B transmission in Type B may include a resource that conflicts with another resource. In this description, in a case where a resource collision occurs in the future in Type B, Type C is classified as a case where a resource collision has occurred, but this description is not limited to this classification. The following describes an operation, with reference to terminal 200 transmitting inter-EU resource adjustment information to EU-A and terminal 200 receiving inter-EU resource adjustment information to EU-B. When inter-EU resource adjustment information is transmitted in a manner that makes it receivable by the specified terminal 200, the specified terminal 200 can receive the inter-EU resource adjustment information. When inter-EU resource adjustment information is transmitted in a manner that allows it to be received by a plurality of terminals 200, those terminals 200 can receive the inter-EU resource adjustment information. Therefore, the EU-B receiving the - 38 inter-EU resource adjustment information is not limited to one. PSFCH configuration description The HARQ ACK or NACK of SL communication can be indicated by a PSFCH. The number of intervals for which a PSFCH is represented (in other words, the period during which a PSFCH can be transmitted) is determined by a parameter called sl-PSFCH-Period, for example. Figure 9 illustrates an example where sl-PSFCH-Period = 4 and a PSFCH is represented every 4 intervals. In addition, a parameter called sl-MinTimeGapPSFCH determines at least how many intervals after PSSCH reception a HARQ-ACK or NACK is transmitted. Figure 9 illustrates an example in which sl-MinTimeGapPSFCH = 2 and a HARQ-ACK or NACK is transmitted on a PSFCH two intervals after PSSCH reception. In this mode, it is preferred that the resource through which inter-UE resource adjustment information is transmitted be a resource that does not conflict with another resource. For example, it is assumed that terminal 200 of Rei. 16 is unaware of the presence or absence of a resource configured for terminal 200 of Rei. 17 or a later version. Therefore, in a case where the information of - 39 Inter-EU resource adjustment is configured for Rei terminal 200. 17 or later, a resource to transmit inter-EU resource adjustment information is a resource that has less impact on Rei terminal 200. 16. In the present modality, the following resources (1), (2) and (3) are described as examples (see also figure 10). (1) A resource for transmitting inter-UE resource adjustment information is the same symbol as the symbol of a PSFCH for transmitting a HARQ-ACK or NACK. In this case, a collision of the resource with a PSCCH and PSSCH. (2) A resource for transmitting inter-EU resource adjustment information is a resource of a certain frequency in a resource pool. For example, in REI. 16, the number of physical resource blocks (PRBs) in a resource pool may not be a multiple of the number of PRBs included in a subchannel. In this case, the remaining PRB is not used for resource allocation. When a resource that is not included in a subchannel exists in the PRB of the resource pool, the resource is allocated for transmitting inter-EU resource adjustment information. (3) A resource for transmitting inter-EU resource adjustment information is a resource outside of a - 40 resource pool. A resource outside the resource pool is, for example, a resource outside a resource pool for Rei. 16. However, a resource outside the resource pool can be a resource within a resource pool for Rei. 17 terminal 200 or later, or it can be defined as a resource that is also outside the resource pool for Rei. 17 terminal 200 or later, but in which transmission and reception can be performed. Method for Determining Resources The following will describe an exemplary method for determining a time resource for transmitting inter-EU resource adjustment information. For a candidate for a time resource, resources that satisfy a certain condition (e.g., parameters K1 and K2, which will be described later), such as resources (1) to (3) illustrated in an exemplary way in Figure 10, can be set up in advance as candidate resources. Examples of configuration methods include: preconfigured by specification; preconfigured in SIM; configured in an application layer called preconfigured; configured in a system information block (SIB) called configured or in another higher layer such as RRC; - 41 configured in MAC; and configured in a physical layer by SCI. When the same symbol as a PSFCH is configured as a candidate resource, a new candidate configuration for a time resource can be, for example, the same as the PSFCH's candidate resource position. In a case where a resource is a different resource from a PSFCH in a resource pool, or a resource is outside the resource pool, a candidate for a time resource can be configured separately. In a case where inter-EU resource adjustment information of type B is assumed, for example, the candidate position can be reduced by narrowing it further from the candidate position determined by tracking two parameters K1 and K2. K1: The minimum processing time for transmission by UE-A of inter-UE resource adjustment information after receiving a PSCCH transmitted by UE-B K2: The minimum processing time for UE-B to stop transmission after receiving inter-UE resource adjustment information. Inter-EU resource adjustment information may be transmitted within a period K1 after receiving a PSCCH and before the timing K2 prior to the PSSCH's scheduled transmission timing reserved by the PSCCH. In other - 42 words, the period susceptible to transmission of inter-EU resource adjustment information can be configured based on K1 and K2. In type B, when the PSSCH resource reserved by a PSCCH by UE-B is not preferred for transmission, UE-A may request UE-B to change the resource used for transmission when transmitting inter-UE resource adjustment information. The candidate position for transmitting inter-UE resource adjustment information can be after K1 from the PSSCH transmitted by UE-B and K2 before the planned transmission time of the PSSCH allocated (in other words, reserved) by UE-B. The time units for K1 and K2 can be configured in symbol units, intervals, or real time (e.g., ms). Considering the number of symbols and intervals, the real time may vary depending on factors such as subcarrier spacing. Furthermore, K1 can be configured to be longer than K2, for example. For instance, when terminal 200 receives a PSSCH and identifies a transmission destination, it takes time to demodulate and decode the second-stage SCI represented in the PSSCH. Additionally, the processing by terminal 200 of generating and transmitting inter-UE resource adjustment information also takes time. - 43 Therefore, it can be said that K1 is likely to be longer than the processing time of K2 required to stop the planned PSSCH transmission after receiving the inter-UE resource adjustment information. However, K2 can be configured to be longer than K1. When terminal 200 takes a long time to process the transmission stop, a longer value can be set for K2 corresponding to the transmission stop processing time, or the same value as K1 can be set for K2. When a candidate position for a resource to transmit inter-EU resource adjustment information is determined, EU-A transmits the inter-EU resource adjustment information to EU-B using the resource in the candidate position, for example. When no resource exists that satisfies conditions K1 and K2, EU-A does not need to transmit inter-EU resource adjustment information. Furthermore, when no resource exists that satisfies the conditions of K1 and K2, UE-A can transmit a HARQ-NACK to UE-B on a PSFCH, instead of the inter-UE resource adjustment information, for example. This operation can be understood as a switching operation from type B to type C when there is a null resource to be transmitted for type B. - 44 In type A, for example, the following K3 can be configured instead of K2. Furthermore, in the case of type A, UE-A can determine the resource allocation and transmit the information as inter-UE resource adjustment information, and therefore K1 does not need to be configured in this case. K3: The minimum time for UE-B to initiate transmission after receiving inter-UE resource adjustment information. The value of K3 can be the same as or different from the value of K2. For example, since UE-B generates data and initiates the transmission of the generated data after receiving inter-UE resource adjustment information, a longer value can be set for K3 than for K2. The configuration with K1 and K2 (or K1 and K3) can prevent UE-A from transmitting inter-UE resource adjustment information for which UE-B cannot process (e.g., stop processing or transmission start of a PSSCH reserved by a PSCCH) in time, even if UE-B receives the information. The respective times indicated by KI, K2, and K3 can be understood as intermediate times. Furthermore, these times do not necessarily represent minimum processing times; they can be, for example, maximum processing times or the average processing time of a plurality of terminals. - 45 KI, K2 and K3 can be configured for the terminal 200 individually or can be shared by a plurality of terminal 200s. For example, the respective values ​​of KI, K2 and K3 can be determined in advance or can be configured dynamically based on capacity information of the terminal 200. Furthermore, one of K1 and K2 (or K1 and K3) can be derived from the other value, for example. Additionally, both K1 and K2 (or K1 and K3) do not necessarily need to be configured; only one of them (for example, K2 or K3) can be configured. Example of Operation The following is an example of operation with reference to Figure 11. Figure 11 illustrates an example in which UE-B allocates the PSSCHs of interval #n (n being an integer of 0 or greater) and interval #n + 19 by a PSSCH in interval #n. When UE-I detects that the resource reserved by another UE and the resource reserved by UE-B collide with each other by detecting the PSSCHs, UE-A transmits inter-UE resource adjustment information to UE-B. It is observed that, although a collision detection case has been described as an example, inter-UE resource adjustment information may be transmitted due to another reason or a situation such as a half-double problem in which reception does not occur because the terminal - 46 of destination 200 is in a transmitting state, or a case where the quality of reception of a resource is expected to be low (e.g., equal to or less than a threshold value) on a resource. According to the conditions of K1 and K2, UE-A assumes (determines) that, for example, in figure 11, three intervals of the interval #n+6, the interval #n+10 and the interval #n+14 are candidate resources (1) that can be used for transmission of inter-UE resource adjustment information. Example of Operation Al In the example operation A1, the earliest resource among a plurality of candidate resources is used for inter-UE resource adjustment information transmission. In Figure 11, the inter-UE resource adjustment information is transmitted to UE-B at resource (1) in interval #n+6, which is the earliest interval among intervals #n+6, #n+10, and #n+14. In this case, UE-B, having received inter-UE resource adjustment information, can recognize that the resource reserved by UE-B is unsuitable for transmission at an early stage, thus reducing the delay associated with resource reselection. For example, when inter-UE resource adjustment information is received (or detected) in the interval #n+6, UE-B can - 47 recognizes that a resource reserved by UE-B clashes with a resource reserved by another UE and can change the allocation of resources reserved by UE-B. Changing the resource allocation can resolve the resource collision. Therefore, the performance of SL communication can be improved. Example of Operation A2 In operation example A2, the latest resource in time from among a plurality of candidate resources is used for transmission of inter-EU resource adjustment information, for example. In Figure 11, the inter-EU resource adjustment information is transmitted in resource (1) of the interval #n+14 between the intervals #n+6, #n+10 and #n+14. In this case, for example, even when a collision occurs between a resource reserved by UE-B and a resource reserved by another UE in an interval after the interval #n+6, UE-B can recognize the collision presentation by the inter-UE resource adjustment information received in the interval #n+14. For example, when inter-UE resource adjustment information is detected in the interval #n+14, UE-B may recognize that a resource reserved by UE-B collides with a resource reserved by another UE, and may change the resource allocation reserved by UE-B. The allocation change of - 48 resources can resolve resource collisions. Therefore, SL communication performance can be improved. Example of Operation A3 In the example of operation A3, for instance, UE-A freely selects a resource used for transmitting inter-UE resource adjustment information from a plurality of candidate resources. In this case, it is possible to reduce the probability that a resource through which inter-UE resource adjustment information is transmitted will collide with another resource. For example, when UE-A is going to receive or transmit another resource in a candidate interval in which UE-A is going to transmit inter-UE resource adjustment information, the transmission of inter-UE resource adjustment information by UE-A may be interrupted. In such a case, from a plurality of candidate resources, for example, from three resources (1) in the intervals #n+6, #n+10 and #n+14, as illustrated in Figure 11, UE-A can select the resource (1) from an interval in which UE-A can perform the transmission, and can transmit inter-UE resource adjustment information in the resource (1) of the selected interval. For example, UE-B detects (or monitors) whether inter-UE resource adjustment information is transmitted in - 49 a plurality of intervals. When inter-UE resource adjustment information is detected by any of the intervals, UE-B can recognize that the resource reserved by UE-B collides with another resource, and can change the resource allocation. The change in resource allocation can resolve the resource collision. Therefore, the performance of SL communication can be improved. Example of Operation A4 In the example operation A4, a resource used for transmission of inter-EU resource adjustment information is determined from a plurality of candidate resources based on a previously defined formula. The formula is shared between UE-A and UE-B in advance. For example, the resource used for transmitting inter-UE resource adjustment information can be determined by Mod (the number of candidate resources, source ID) based on the number of candidate resources and the source ID for UE-B. Using the formula (or a rule) to determine a resource used for transmitting inter-UE resource adjustment information can reduce the likelihood of the resource on which the inter-UE resource adjustment information is transmitted colliding with another resource. For example, when the candidate number is 3 as illustrated in Figure 11 and the UE-B source ID is 2, Mod(3,2) = 1. In this way, UE-A transmits information - 50 inter-EU resource adjustment on resource (1) of interval #n+10, which is the first candidate of the candidates in positions 0, first and second. When inter-UE resource adjustment information is detected in the interval #n+10, UE-B can recognize that a resource reserved by UE-B is in conflict with another resource and can change the allocation of resources reserved by UE-B. Changing the resource allocation can resolve the resource conflict. Therefore, SL communication performance can be improved. As described above, using the UE-B source ID for the resource determination calculation allows inter-UE resource adjustment information to be transmitted on the same resource even when there are a plurality of 200 terminals transmitting inter-UE resource adjustment information (in other words, the 200 terminal corresponding to UE-A), which makes detection (or monitoring) by UE-B easier. Furthermore, when UE-A transmits inter-UE resource adjustment information to a different UE (e.g., UE-C (not illustrated)) than UE-B, the probability that the inter-UE resource adjustment information intended for UE-B and UE-C will be allocated to different resources increases. This can increase the probability that both UE-B and UE-C will successfully receive the inter-UE resource adjustment information from UE-A. Variation In a PSCCH, for example, it is possible to specify the allocation of resources for two additional intervals besides the interval itself. When the interval in which the PSCCH is transmitted is interval #n, the two additional intervals can be freely selected from 31 intervals, from interval #n+1 to interval #n+31, for example. For example, as illustrated in Figure 12, a PSSCH resource in interval #n+19 and a PSSCH resource in interval #n+27 can be reserved by a PSSCH in interval #n. In this case, the inter-EU resource adjustment information can be transmitted individually on each resource (1) in interval #n+19 and the resource (1) in interval #n+27, or the information on two PSSCH resources can be transmitted by one piece of inter-EU resource adjustment information. In the case where inter-EU resource adjustment information is transmitted for different PSSCH resources individually, the resource time intervals (1) in which the inter-EU resource adjustment information is transmitted can be determined based on K1 and K2 with reference to the individually allocated PSSCH resources. - 52 When inter-UE resource adjustment information for two PSSCH resources is transmitted collectively, a resource time interval (1) can be determined in which the inter-UE resource adjustment information is transmitted, based on K1 and K2, with reference to a PSSCH resource in a previous interval (interval #n+19 in Figure 12) of the allocated PSSCH resources. Furthermore, a resource used for transmitting inter-EU resource adjustment information can be configured over a plurality of intervals. These intervals can be continuous or discontinuous. The resource (2) in which a plurality of intervals are collected is represented by indices, for example. For example, as illustrated in Figure 13, among the indices #0, #1, and #2 that satisfy K1 and K2, an index can be selected (or determined) for transmission of inter-UE resource adjustment information in accordance with any of the operation examples A1 to A4 described above. For example, among the indices #0, #1, and #2 that satisfy the conditions of K1 and K2, an earlier index can be selected in operation example A1, and a later index can be selected in operation example A2. Furthermore, in operation example A3, UE-A - 53 can select an index from the indices #0, #1 and #2 that satisfy K1 and K2 and in example operation 4, an index can be selected by a formula. UE-A can transmit inter-UE resource adjustment information to UE-B in all or some intervals of a plurality of intervals belonging to the selected index. It will be observed that when the number of candidate resources (or indices) that satisfy the conditions of K1 and K2 (or K1 and K3) in the example operation A1 to A4 described above is one, UE-A can determine the candidate resource (or index) as a resource (or index) used for transmission of inter-UE resource adjustment information. Furthermore, the operation examples A1 to A4 can be selectively applied (in other words, they can be switched) to terminal 200. For example, the operation examples A1 to A4 that are to be applied can be switched depending on a difference in communication priority or reliability. Priority of Inter-EU Resource Allocation Information Inter-UE resource adjustment information can be transmitted from the preconfigured UE, but a resource in which inter-UE resource adjustment information is transmitted may collide (or overlap) with a - 54 resource of another signal (a transmit signal or a receive signal). Resource collision herein may indicate that the resources are represented in the same symbol or PRB, and the resources do not need to completely overlap each other. Another signal may include, for example, at least one inter-UE resource adjustment information signal, a signal from other side-link communications that differ from the communication (transmission or reception) related to the inter-UE resource adjustment information, and a UL signal or a DL signal from Uu link communication between base station 100 and terminal 200. Furthermore, inter-UE resource adjustment information can be frequency-division multiplexed, for example, in PRB units into one symbol of another transmit signal or another receive signal, but in this case, the transmission of inter-UE resource adjustment information by UE may be interrupted for reasons such as because transmission and reception cannot be performed at the same time, the transmission power may be insufficient, or resources collide between a plurality of pieces of inter-UE resource adjustment information. The following will describe a priority (or arbitrage) of inter-EU resource adjustment information and another signal. - 55 Example of Operation B1 In the B1 operation example, when inter-UE resource adjustment information and at least one other side-link communication signal and one UL signal are mapped to the same symbol or to resources that partially overlap, the other side-link signal and the UL signal are prioritized over the inter-UE resource adjustment information to be transmitted and received. The other side-link signals include at least one PSCCH, one PSSCH, one PSFCH, and one PSBCH. As illustrated as resource (1) in Figure 10, when terminal 200 transmits or receives inter-UE resource adjustment information on the same symbol as a PSFCH, the inter-UE resource adjustment information resource (1) may overlap with a symbol or resource from either or both of a PSFCH sidelink communication and / or a UL communication signal (Uu link communication) between base station 100 and terminal 200. In such a case, terminal 200 may prioritize the transmission or reception of the PSFCH and the transmission or reception of the UL signal between base station 100 and terminal 200 over the transmission or reception of inter-UE resource adjustment information. Thus, - 56 For example, it is possible to reduce the effect on the transmission and reception of sidelink data (e.g., PSSCH) or the communication signal allocation between base station 100 and terminal 200 at the time of transmission and reception of inter-UE resource adjustment information. The PSFCH and inter-UE resource adjustment information can be transmitted or received on the same symbol as the PSFCH using multiplexing methods such as frequency-division multiplexing. When transmission power is insufficient to perform multiplexing on terminal 200, the PSFCH transmission can be prioritized over the inter-UE resource adjustment information. Furthermore, as illustrated as resource (2) in Figure 10, when inter-UE resource adjustment information is transmitted on a certain frequency resource and resource pool, the inter-UE resource adjustment information resource (2) may possibly overlap with a symbol or resource of either or both of a side link signal and / or a Uu link UL signal. When terminal 200 transmits at least one of a PSCCH, a PSSCH, a PSFCH, and a PSBCH on the sidelink, the transmission of at least one of the PSCCH, PSSCH, PSFCH, and PSBCH may be prioritized over the transmission or reception of resource adjustment information. - 57 inter-EU. When resources are allocated to terminal 200 and terminal 200 receives at least one from a PSCCH and a PSSCH, the reception of at least one from the PSCCH and the PSSCH may be prioritized over the transmission or reception of inter-EU resource adjustment information. When no resource is allocated to terminal 200, the transmission of inter-EU resource adjustment information is prioritized over the reception of a PSCCH and a PSSCH for detection, and reception can be performed simultaneously with the transmission of inter-EU resource adjustment information. When the resources for receiving a PSBCH and for transmitting inter-UE resource adjustment information overlap, Terminal 200 can determine which of the PSBCH reception and the inter-UE resource adjustment information transmission takes priority. For example, because a PSBCH is a periodically transmitted signal, when the last received PSBCH is appropriate, the transmission of the inter-UE resource adjustment information is prioritized over the PSBCH reception. Furthermore, as illustrated as resource (3) in Figure 10, when inter-EU resource adjustment information is transmitted in a resource outside the resource pool, resource (3) of the adjustment information - 58 Inter-UE resource may overlap with a resource symbol of a UL signal or a DL signal of a Uu link. In this case, terminal 200 may prioritize the transmission of the UL signal or the reception of the DL signal over the transmission or reception of the inter-UE resource adjustment information. When simultaneous transmission or simultaneous reception of inter-UE resource adjustment information and a UL or DL ​​signal is permitted, the 200 terminal can perform simultaneous transmission or simultaneous reception of inter-UE resource adjustment information and a UL or DL ​​signal. Example of Operation B2 In example operation B2, an exemplary method will be described in which, when terminal 200 transmits inter-EU resource adjustment information to a plurality of resources or a plurality of terminal 200s, the resources are on the same symbol and overlap each other, so that terminal 200 determines which inter-EU resource adjustment information to transmit with priority. Terminal 200 can determine priority based, for example, on a factor that makes a resource not preferred for transmission. For example, the exemplary factors by which UE-A determines that a resource transmitted by another UE is not preferred are as follows. (A) A resource is forwarded to UE-A, but it is a resource that cannot be received because UE-A is in a transmission state or for some other reason. (B) A resource addressed to UE-A collides with another resource allocation (C) A resource is not addressed to UE-A but is a resource that cannot be received by the addressed UE (D) A resource is not addressed to UE-A, but collides with another resource allocation. The appeal directed to the EU may include, for example, a single dissemination appeal, a group dissemination appeal, or a dissemination appeal. The EU-A preferentially transmits inter-EU adjustment information related to the appeal directed to the EU-A. For example, inter-EU resource adjustment information can be transmitted by prioritizing cases (A) and (b) over cases (C) and (D). Case (A) can be prioritized between cases (A) and (B), for example. This is because, for example, in case (B), the collision is likely avoided when the UE cancels the transmission, and therefore, even when a collision occurs, there is a possibility that the resource can be received depending on the line quality. Similarly, case (C) can be prioritized between cases (C) and (D), for example. With reference to figure 14, a - 60 exemplary operation performed when a plurality of resource collisions is detected. Figure 14 illustrates an example in which a resource reserved by UE-D (e.g., priority = 1) and a resource reserved by UE-E (e.g., priority = 2) collide with each other in the interval #n+17. Figure 14 further illustrates an example in which a resource reserved by UE-B (e.g., priority = 0) and a resource reserved by UE-C (e.g., priority = 3) collide with each other in the interval #n+19. Note that the priority can be, for example, a priority indicated by priority in the first stage SCI in a PSCCH, and the lower the number, the higher the priority. When a resource collides in interval #n+17 and interval #n+19 is detected by UE-A, the resources in which UE-A transmits inter-UE resource adjustment information can be determined according to the operation examples A1 or A2 described above, but in this case, the transmissions may occur in the same symbol. When the transmission power is insufficient, the inter-UE resource adjustment information to be transmitted is determined based on priorities 0 to 3, for example. In the operation examples A3 or A4, the - 61 Inter-EU resource adjustment information may be transmitted in different resources in some cases, but the resource may overlap with the resource of other inter-EU resource adjustment information. Example of Operation B2-1 UE-A can transmit inter-UE resource adjustment information to protect the transmission of a high-priority resource. For example, in order to enable the transmission or reception of a high-priority resource, UE-A can transmit inter-UE resource adjustment information for a resource that conflicts with the high-priority resource. In Figure 14, the PSSCH resources reserved by UE-B and UE-C collide with each other, and the priority (= 0) of the PSSCH resource reserved by UE-B is higher than the priority (= 3) of the PSSCH resource reserved by UE-C. In this case, in order to protect the PSSCH resource reserved by UE-B, UE-A transmits inter-UE resource adjustment information to UE-C and requests that UE-C change the resource allocation of the PSSCH reserved by UE-C, which clashes with the PSSCH resource reserved by UE-B. The UE-C that has received this inter-UE resource adjustment information changes the resource allocation of the reserved PSSCH resource, so that a collision with the high-priority PSSCH resource can be avoided. Therefore, - 62 A high-priority PSSCH resource can be protected, and UE-B can perform the transmission using the reserved PSSCH resource. Alternatively, as a variation, UE-A can transmit inter-UE resource adjustment information to UE-B for the high-priority PSSCH resource (e.g., the PSSCH resource reserved by UE-B). When UE-B receives this inter-UE resource adjustment information, the reserved PSSCH resource can be scheduled. This method is effective when the UE is configured to receive inter-UE resource adjustment information for a high-priority PSSCH resource. For a low-priority resource, the UE-C can transmit using the reserved PSSCH resource without receiving inter-UE resource adjustment information. Example of Operation B2-2 UE-A can preferentially transmit inter-UE resource adjustment information for an interval in which the resource allocation of a PSSCH resource is early in time. In the example in Figure 14, since interval #n+17 is earlier than interval #n+19, UE-A can transmit the inter-UE resource adjustment information for the PSSCH resource of interval #n+17. In this case, the PSSCH resource of the earlier interval #n+17 can be prioritized over the PSSCH resource of the later interval. - 63 posterior #n+19 to be protected. For example, since the priority (= 1) of the PSSCH resource reserved by UE-D is higher than the priority (= 2) of the PSSCH resource reserved by UE-E, UE-A can transmit inter-UE resource adjustment information to UE-E for the UE-E's PSSCH resource that has a lower priority. According to the example operation A3, when there are multiple candidate resources to which inter-UE resource adjustment information can be transmitted, UE-A can freely select the candidate resource and transmit the inter-UE resource adjustment information. In this case, UE-A can transmit information that a collision occurred between the PSSCH resources of UE-D and UE-E in interval #n+17 to UE-E, which has a lower priority for inter-UE resource adjustment information in an earlier interval (e.g., interval #n+6). Additionally, UE-A can transmit information that a collision occurred between the PSSCH resources of UE-B and UE-C in interval #n+19 to UE-C, which has a lower priority for inter-UE resource adjustment information, in a later interval (e.g., interval #n+10 or interval n+14). Note that UE-A can transmit inter-UE resource adjustment information for a PSSCH resource that has a higher priority, similar to the variation in operation example B2-1. Example of Operation B2-3 It can be determined which EU the EU-A transmits inter-EU resource adjustment information for the PSSCH resource, based on a single determination criterion for EU-A or it can be determined individually for each EU. Example of Operation B2-4 UE-A may preferentially transmit inter-EU resource adjustment information for a PSSCH resource reserved by another UE belonging to the same group as UE-A. UEs in the same group are likely to support the receipt of inter-EU resource adjustment information, thus enabling the efficient use of such information. Example of Operation B2-5 UE-A can determine a priority for transmitting inter-UE resource adjustment information based on the broadcast type. When priorities are the same, UE-A can operate in a way that protects a PSSCH resource for broadcast, group broadcast, or single broadcast purposes. For example, when UE detects a collision between a broadcast signal and a single broadcast signal, UE can transmit inter-UE resource adjustment information for a - 65 Single broadcast resource to request a resource allocation change. This allows the UE of Rei. 16 to transmit without changing the resource when the UE receives a broadcast signal. Example of Operation C3 When the transmission and reception of inter-EU resource adjustment information occur on the same symbol or on different resources, UE-A may prioritize the reception of inter-EU resource adjustment information, for example. In this case, UE-A may prioritize receiving adjustment information from one UE-A source over another. When inter-EU resource adjustment information is information about a resource allocated to EU-A, EU-A can prioritize the transmission of the inter-EU resource adjustment information and request that another EU change the resource allocation. PSFCH In a Rei. 16 PSFCH, one bit of an ACK / NACK is transmitted in a symbol, which is the same format as PUCCH format 0. The format herein indicates the number of symbols, a sequence, the representation of a demodulation reference signal (DMRS) and / or similar. The format of a PSFCH to which inter-EU resource adjustment information has been represented can be a - 66. A different format from a PSFCH of Rei. 16. The different format can be, for example, a format equivalent to PUCCH formats 1, 2, 3, or 4. For example, bits larger than two bits can be represented in PUCCH formats 2, 3, and 4, so these formats are suitable for cases where the amount of inter-UE resource adjustment information is greater than two bits. Furthermore, a PSFCH can be configured using a format different from a PUCCH format. Other Modalities The operation examples described above can be used in combination. For example, the operation examples can be different for each EU, or an EU can transmit inter-EU resource adjustment information using multiple operation examples. The terminals communicating on the side link may include a terminal that performs only one transmission and one reception, and a terminal that performs both transmission and reception. When a configuration is supposed to be preconfigured with respect to a sidelink, the configuration method can be preconfigured by the specification or preconfigured in SIM, for example. Additionally, the configuration method can include: configured in an application layer called preconfigured, configured in a SIB called configured, or in another higher layer such as RRC; and configured in MAC. The modes described above can be applied to Uu communication between base station 100 and terminal 200, replacing a PSCCH with a PDCCH, a PSSCH with a PDSCH or a PUSCH, a PSFCH with a PUCCH, and a PSBCH with a PBCH. The modes described above can also be applied to a UCI transmitted over a PUSCH. Furthermore, the modes described above can only be applied to mode 2 of mode 1 and mode 2 of the side link. Inter-EU resource adjustment information can be shared among multiple terminals, for example. The number of transmitting terminals transmitting inter-EU resource adjustment information is not limited to one and can be two or more. Similarly, the number of receiving terminals receiving inter-EU resource adjustment information is not limited to one and can be two or more. Furthermore, the roles of transmitting and receiving terminals can be interchanged. For example, Terminal 200 can be a terminal that supports either one or both transmission and reception of inter-UE resource usage adjustment information. Among Terminal 200s that support both - 68 transmission such as the reception of inter-UE resource usage adjustment information, the detection of information that cannot be received due to the half-duplex problem can be complemented by each other, for example. Terminal 200, configured to receive inter-UE resource adjustment information, can be configured not to perform discovery. This can reduce discovery power consumption. Information indicating whether Terminal 200 supports functions, operations, or processing indicated in the modalities and variations described above may be transmitted (or indicated) from Terminal 200 to another Terminal 200 or Base Station 100, such as, for example, capacity information or a capacity parameter of Terminal 200. The capability information may include any one information element (IE) indicating whether Terminal 200 supports at least one of the functions, operations, or processing described in the modalities and variations described above. Alternatively, the capability information may include one information element indicating whether Terminal 200 supports a combination of any two or more of the functions, operations, or processing described in the modalities and variations described above. - 69 Terminal 200 or base station 100 that has received capacity information can determine (or assume) the function, operation, or processing supported (or not supported) by terminal 200 from the source of the capacity information transmission. For example, terminal 200 or base station 100 that has received capacity information can perform an operation, processing, or control in accordance with a determination based on the capacity information. For example, terminal 200 or base station 100 that has received capacity information can control resource allocation based on the capacity information. It is observed that the 200 terminal, which does not support some of the functions, operations, or processing described in each of the modalities described above and variations, can be interpreted as limiting some of the functions, operations, or processing in the 200 terminal. For example, information or a request regarding this limitation can be directed to another 200 terminal or 100 base station. Information about the capacity or limitation of terminal 200 can be defined, for example, in the standard or can be implicitly indicated to another terminal 200 or base station 100 in association with information known to another terminal 200 or base station 100 or information transmitted to another terminal 200 or base station 100. Note that an ACK / NACK can be referred to as, for example, HARQ-ACK or HARQ-feedback information. Repetition can also be called, for example, interval aggregation, interval bundling, TTI aggregation, or TTI bundling. Furthermore, any component designated with a suffix such as -er, -or or -ar in this description may be replaced with another term such as circuit, device, unit or module. Base Station In this description, the base station can be a transmit / receive point (TRP), a clusterhead, an access point, a remote radio head (RRH), an eNodeB (eNB), a gNodeB (ggNB), a base station (BS), a base transceiver station (BTS), a base unit, or a gateway, for example. In sidelink communication, the base station can be replaced by a terminal. The base station can be a relay device that relays communication between an uplink node and a terminal. The base station can also be a unit along the path. Uplink / Downlink / Sidelink This description can be applied to any uplink, downlink, or sidelink channel. For example, this description can be applied to uplink channels such as a PUSCH, PUCCH, and PRACH; downlink channels such as a PDSCH, PDCCH, and PBCH; and sidelink channels such as a shared physical sidelink channel (PSSCH), a physical sidelink control channel (PSCCH), and a physical sidelink broadcast channel (PSBCH). Note that PDCCH, PDSCH, PUSCH, and PUCCH are examples of a downlink control channel, a downlink data channel, an uplink data channel, and an uplink control channel, respectively. PSCCH and PSSCH are examples of a sidelink control channel and a sidelink data channel, respectively. PBCH and PSBCH are examples of broadcast channels, and PRACH is an example of a random access channel. Data channel / control channel This description applies to any of the data and control channels. The channels in this description may be substituted with data channels including a PDSCH, a PUSCH, and a PSSCH, and / or control channels including a PDCCH, a PUCCH, a PBCH, a PSCCH, and a PSBCH. Reference signal In this description, a reference signal is a signal known to both the base station and the mobile station and may also be referred to as a reference signal (RS) or a pilot signal. The reference signal can be any of a DMRS, channel status information-reference signal (CSI-RS), a tracking reference signal (TRS), a phase-tracking reference signal (PTRS), a cell-specific reference signal (CRS), or a probe reference signal (SRS). Time interval In this description, time resource units are not limited to one or a combination of intervals and symbols and may be time resource units such as frames, superframes, subframes, intervals, time intervals, subintervals, mini-intervals or time resource units such as symbols, orthogonal frequency-division multiplexing (OFDM) symbols, multiple access symbols of - 73 single-carrier-frequency division (SC-FDMA) or other time resource units. In addition, the number of symbols included in a span is not limited to any number of symbols exemplified in the modes described above and may be other numbers of symbols. Frequency band This description can be applied to either an authorized band or an unauthorized band. Communication This description can be applied to any communication between a base station and a terminal (Uu link communication), communication between a terminal and a terminal (side link communication), and vehicle-to-all (V2X) communication. The channels in this description can be substituted with a PSCCH, a PSSCH, a physical side link feedback channel (PSFCH), a PSBCH, a PDCCH, a PUCCH, a PDSCH, a PUSCH, and a PBCH. Furthermore, this description can be applied to any terrestrial network or a network other than a terrestrial network (a non-terrestrial network, NTN) using a satellite or a high-altitude pseudo-satellite (HAPS). Additionally, this description can be applied to a network that is of a certain size. - 74 large cell, and a terrestrial network with a large delay compared to a symbol length or an interval length, such as an ultra-wideband transmission network. Antenna port An antenna port refers to a logical antenna (antenna group) consisting of one or more physical antennas. That is, the antenna port does not necessarily refer to a single physical antenna and sometimes refers to an antenna array consisting of multiple antennas or similar components. For example, the number of physical antennas that make up an antenna port is not defined; instead, an antenna port is defined as the smallest unit through which a terminal is allowed to transmit a reference signal. Furthermore, the antenna port can be specified as the smallest unit for multiplying the weight of a precoding vector. 5G NR System Architecture and Protocol Stacking 3GPP has been working on the next release for fifth-generation cellular technology, simply called 5G, which includes the development of new radio access (NR) technology operating at frequencies up to 100 GHz. The first version of the 5G standard was completed in late 2017, allowing progress to trials that meet the necessary standards. - 75 the 5G NR standards and commercial deployments of terminals (e.g., smartphones). For example, the overall system architecture assumes a next-generation radio access network (NG-RAN) that includes gNBs. The gNB provides the NG-radio access user plane (SDAP / PDCP / RLC / MAC / PHY) and control plane protocol (RRC) terminations to the UE. The gNBs are interconnected with each other via an Xn interconnect. The gNBs are also connected via the next-generation (NG) interconnect to the next-generation core (NGC), more specifically to the access and mobility management (AMF) function (e.g., a particular core entity performing the AMF) via the NG-C interconnect, and to the user plane function (UPF) (e.g., a particular core entity performing the UPF) via the NG-U interconnect. The NG-RAN architecture is illustrated in Figure 15 (see, for example, 3GPP TS 38.300 V15).6.0, section 4). The user plane protocol stack for NR (see, for example, 3GPP TS 38.300, section 4.4.1) includes the sublayers of the Packet Data Convergence Protocol (PDCP, see section 6.4 of TS 28.300), the Radio Link Control (RLC, for its - 76 (see section 6.3 of TS 38.300) and Media Access Control (MAC, see section 6.2 of TS 38.300), which are terminated in the gNB on the network side. Additionally, a new access stratum (AS) sublayer (Service Data Adaptation Protocol, SDAP) is introduced above PDCP (see, for example, sub-clause 6.5 of 3GPP TS 38.300). A control plane protocol stack is also defined for NR (see, for example, TS 38.300, section 4.4.2). A general overview of the layer 2 functions is provided in sub-clause 6 of TS 38.300. The functions of the PDCP, RLC, and MAC sublayers are listed respectively in sections 6.4, 6.3, and 6.2 of TS 38.300. The functions of the RRC layer are listed in sub-clause 7 of TS 38.300. For example, the media access control layer handles logical channel multiplexing and scheduling and scheduling-related functions, including the handling of different numerologies. The physical layer (PHY) is responsible for encoding, PHY HARQ processing, modulation, multi-antenna processing, and rendering the signal to the appropriate physical time-frequency resources. The physical layer also handles the representation of transport channels to other channels. - 77. Physical. The physical layer provides services to the MAC layer in the form of transport channels. A physical channel corresponds to the set of time-frequency resources used for transmission on a particular transport channel, and each transport channel is represented by a corresponding physical channel. Examples of physical channels include a physical random access channel (PRACH), a physical uplink shared channel (PUSCH), and a physical uplink control channel (PUCCH) as uplink physical channels, and a physical downlink shared channel (PDSCH), a physical downlink control channel (PDCCH), and a physical broadcast channel (PBCH) as downlink physical channels. Use case / deployment scenarios for NR can include augmented mobile broadband (eMBB), ultra-reliable low-latency communications (URLLC), and massive machine-type communications (mMTC), each with diverse requirements in terms of data rates, latency, and coverage. For example, eMBB is expected to support peak data rates (20 Gbps downlink and 10 Gbps uplink) and - 78 user-experienced data rates, approximately three times faster than those offered by IMT-Advanced. Furthermore, for URLLC, the most stringent requirements are for ultra-low latency (0.5 ms for both UL and DL, each for user-plane latency) and high reliability (1 x 10⁻⁵ within 1 ms). Finally, mMTC may preferentially require high connection density (1,000,000 devices / km² in an urban environment), wide coverage in challenging environments, and extremely long battery life for low-cost devices (15 years). Therefore, OFDM numerology (e.g., subcarrier spacing, OFDM symbol duration, cyclic prefix (CP) duration, and number of symbols per scheduling interval) that is suitable for one use case may not work well for another. For example, low-latency services may preferentially require a shorter symbol duration (and therefore a larger subcarrier spacing) and / or fewer symbols per scheduling interval (also known as TTI) compared to an mMTC service. Furthermore, deployment scenarios with large channel delay spreads may preferentially require a larger CP duration compared to scenarios with short delay spreads. The subcarrier spacing can be optimized accordingly to maintain similar overall CP information. NR can support more than one subcarrier spacing value.Accordingly, subcarrier spacings of 15 kHz, 30 kHz, 60 kHz, ... are currently being considered. The symbol duration Tu and the subcarrier spacing Δi are directly related through the formula Áf = 1 / Tu. Similar to LTE systems, the term resource element can be used to denote a minimum resource unit consisting of a subcarrier and the length of one OFDM / SC-FDMA symbol. In the new 5G-NR radio system, for each numerology and carrier, a resource grid of subcarriers and OFDM symbols is defined for the uplink and downlink, respectively. Each element in the resource grid is called a resource element and is identified based on the frequency index in the frequency domain and the symbol position in the time domain (see 3GPP TS 38.211 V15.6.0). Functional division between NG-RAN and 5GC in 5G NR Figure 16 illustrates the functional division between NG-RAN and 5GC. An NG-RAN logical node is either gNB or ng-eNB. 5GC includes AME, UPF, and SMF logical nodes. For example, gNB and ng-eNB host the following main functions: resource management functions - 80 radio functions such as radio carrier control, radio admission control, connection mobility control, and dynamic allocation (scheduling) of both uplink and downlink resources to a UE; IP header compression, encryption, and data integrity protection; selection of an AME during UE joining in a case where, when there is no routing to an AME, it can be determined from the information provided by the UE; user plane data routing to the UPE; control plane information routing to the AME; connection establishment and release; planning and transmission of location messages; planning and transmission of system broadcast information (originating from the AME or an action management maintenance function (operation, admission and maintenance, OAM)); measurement and measurement report configuration for mobility and planning; Transport-level packet marking on the uplink; - 81 session management; network slicing support; QoS flow management and representation for data radio carriers; UE support in RRC_INACTIVE state; distribution function for ÑAS messages; shared radio access network; dual connectivity; and tight network interconnection between NR and E-UTRA. The Access and Mobility Management (AME) function encompasses the following main features: Non-access stratum function signaling termination (NAS); ÑAS signaling safety; access layer (AS) security control; inter-core network node (CN) signaling for mobility between 3GPP access networks; UE affordability in free mode (which includes control and execution of localization relay); registration area administration; mobility support within the system and - 82 between systems; access authentication; access authorization that includes verification of roaming rights, mobility management control (subscription and policies); network slicing support; and session management function (SMF) selection. In addition, the user plane function (UPF) houses the following main functions: anchor point for intra / inter-RAT mobility (where applicable); external protocol data unit (PDU) session point for interconnection to a data network; routing and sending of packet; package inspection and a user plan part of the policy rules taking effect; traffic usage report; uplink classification to support routing traffic flows to a data network; branching point to support a session > tu r\ c N. ac -jcu σ Multi-host PDUs; - 83 QoS handling for user plane (e.g., packet filtering, regulation, UL / DL speed implementation); Uplink traffic verification (SDF for QoS flow representation); and downlink packet buffering function and downlink data notification activation. Finally, the session management function (SMF) houses the following main functions: session management; UE IP address assignment and management; UPF selection and control; configuration function for traffic routing in the user plane function (UPF) to route traffic to an appropriate destination; part of controlling the entry into force of the policy and QoS; and notification of downlink data. RRC connection installation and reconfiguration procedure Figure 17 illustrates some interactions between a UE, gNB, and AME (a 5GC entity) carried out in the context of - 84 a transition of the UE from RRC IDLE to RRC CONNECTED for the ÑAS part (see TS 38 300 V15.6.0). The RRC is the upper-layer signaling protocol used to configure the UE and gNB. During this transition, the AME prepares the UE context data (which includes, for example, a session context PDU, security key, UE radio capability, UE security capabilities, and the like) and sends it to the gNB with an INITIAL CONTEXT SETUP REQUEST. The gNB then activates AS security with the UE. This activation is performed by the gNB transmitting a SecurityModeCommand message to the UE, and the UE responding to the gNB with a SecurityModeComplete message. Subsequently, the gNB performs the reconfiguration for the establishment of the signaling radio carrier 2, SRB2, and one or more of the data radio carriers, DRB, by means of the UE transmitting the RRCReconfiguration message and, in response, the gNB receiving RRCReconfigurationComplete from the UE.For a signaling-only connection, the steps related to RRCReconfiguration are skipped since SRB2 and DRB are not installed. Finally, the gNB informs the AME that the installation procedure is complete with INITIAL CONTEXT SETUP RESPONSE. - 85 Thus, the present description provides a fifth-generation core entity (5GC) (e.g., AMF, SMF, or similar) that includes control circuitry which, in operation, establishes a next-generation (NG) connection with a gNodeB, and a transmitter which, in operation, transmits an initial context installation message to the gNodeB via the NG connection as a signaling radio carrier between the gNodeB and the configured user equipment (UE). Specifically, the gNodeB transmits radio resource control (RRC) signaling, which includes a resource allocation configuration information element (IE), to the UE via the signaling radio carrier. Subsequently, the UE performs an uplink transmission or a downlink reception based on the resource allocation configuration. IMT use cases for 2020 and beyond Figure 18 illustrates some of the use cases for 5G NR. In the new third-generation public relations project (3GPP NR), three use cases have been considered that have been visualized to support a wide variety of services and applications by IMT-2020. The specification for Phase 1 broadband Enhanced Mobile Broadcasting (eMBB) 86 has been completed. Furthermore, to extend eMBB support further, current and future work should involve the standardization of Ultra-Reliable Low-Latency Communications (URLLC) and Mass Machine-Type Communications (mMTC). Figure 18 illustrates some examples of use cases considered for IMT for 2020 and beyond (see, for example, ITU-R M.2083 FIG. 2). The URLLC use case has stringent requirements for capabilities such as throughput, latency, and availability. URLLC has been considered an enabler for future vertical applications such as wireless control of industrial manufacturing or production processes, remote medical surgery, smart grid distribution automation, transportation security, and more. Ultra-reliability for URLLC must be supported by identifying techniques that meet the requirements set by TR 38.913. For NR URLLC in version 15, key requirements include a target user-plane latency of 0.5 ms for the uplink (UL) and 0.5 ms for the downlink (DL). The overall URLLC requirement for a single-packet transmission is a block error rate (BLER) of 1E-5 for a 32-byte packet size with a user-plane latency of 1 ms. From a physical layer perspective, reliability can be improved in several ways. The current scope for reliability enhancement involves defining separate CQI tables for URLLC, more compact DCI formats, PDCCH repetition, and so on. However, the scope can be expanded to achieve ultra-reliability as NR becomes more stable and developed (for key NR URLLC requirements). Specific NR URLLC use cases in REI. 15 include augmented reality / virtual reality (AR / VR), eHealth, eSecurity, and mission-critical applications. Furthermore, the technology enhancements led by NR URLLC aim to improve latency and reliability. The technology enhancements for latency improvements include configurable numerology, non-interval-based scheduling with flexible representation, grant-free uplink (configured grant), interval-level repeat for data channels, and downlink preference. Preference means that a transmission for which resources have already been pre-allocated is stopped, and the allocated resources are used for another transmission that has subsequently submitted a request. - 88 but which has lower latency requirements / or higher priority. Consequently, the pre-granted transmission is preferred over a subsequent transmission. The preference applies regardless of the particular service type. For example, a transmission for service type A (URLLC) may be preferred over a transmission for service type B (such as eMBB). Technology increments with respect to improved reliability include dedicated CQI / MCS tables for the target BLER of 1E-5. The mMTC (massive machine-type communication) use case is characterized by a very large number of connected devices that typically transmit sensitive data at relatively low volumes or with no delay. These devices are required to be low-cost and have very long battery life. From a network remediation (NR) perspective, using very narrow bandwidth segments is a potential solution for achieving energy savings from the user interface (UE) perspective and enabling extended battery life. As mentioned above, the scope of NR reliability is expected to broaden. A key requirement for all cases, for example, for URLLC and mMTC, is high reliability or ultra-reliability. Various mechanisms can improve reliability from the - 89 Radio perspective and network perspective. In general, there are some key potential areas that can help improve reliability. These areas include compact control channel information, data / control channel repetition, and diversity with respect to frequency, time, and / or space domains. These areas are applicable to reliability improvement in general, regardless of the specific communication scenarios. For NR URLLC, additional use cases with tighter requirements have been identified, such as factory automation, the transportation industry, and electric power distribution. The most stringent requirements include superior reliability (up to level 10⁻⁶), superior availability, packet sizes up to 256 bytes, timing synchronization reduction on the order of a few microeq (where the value can be one or a few microeq, depending on the frequency range), and short latency, on the order of 0.5 to 1 ms, specifically a target user plane latency of 0.5 ms, depending on the use case. In addition, several technology improvements have been identified for NR URLLC from a physical layer perspective. These include improvements to the PDCCH (Physical Downlink Control Channel) related to compact DCI, PDCCH repeater, and enhanced monitoring of - 90 PDCCH. Additionally, UCI (Uplink Control Information) enhancements relate to an increased Hybrid Automatic Repeat Request (HARQ) and improvements to CSI feedback. Furthermore, PUSCH enhancements are possible related to improvements in mini-interval level hopping and retransmission / repeat. The term mini-interval refers to a time-of-transmission interval (TTI) that includes a smaller number of symbols than an interval (an interval comprising fourteen symbols). QoS Control The 5G Quality of Service (QoS) model is based on QoS flows and supports both QoS flows that require a guaranteed flow bit rate (GBR QoS flows) and QoS flows that do not (non-GBR QoS flows). At the NAS level, the QoS flow is therefore the finest granularity of QoS differentiation in a PDU session. A QoS flow is identified within a PDU session by a QoS Flow ID (QFI), carried in an encapsulation header over the NG-U interconnect. For each UE, 5GC establishes one or more PDU sessions. For each UE, NG-RAN establishes at least one - 91 Data Radio Carrier (DRB) along with the PDU session, for example, as illustrated above with reference to Figure 17. Additionally, one or more additional DRBs for one or more QoS flows of that PDU session can be configured subsequently (this is done up to NG-RAN). NG-RAN represents packets belonging to different PDU sessions for different DRBs. ÑAS-level packet filters in the UE and 5GC associate UL and DL packets with QoS flows, while AS-level representation establishes the rules in the UE and UL associated with NG-RAN and QoS DL flows with DRBs. Figure 19 illustrates a non-roaming 5G NR reference architecture (see TS 23.501 V16.1.0, section 4.23). An application function (AF), for example, an external application server, serves 5G services, described in an exemplary way in Figure 18, and interacts with the 3GPP core network to provide services, for example, to support application influence on traffic routing, determination of the network exposure function (NEF), or interaction with a policy infrastructure for policy control (see Policy Control Function, PCF), for example, QoS control. Based on the operator's deployment, the functions of - 92 applications deemed reliable by the operator may be granted permission to interact directly with the relevant network functions. Application functions not permitted by the operator to directly access network functions use external exposure infrastructure via NEF to interact with the relevant network functions. Figure 19 illustrates additional functional units of the 5G architecture, specifically the Network Slice Selection Function (NSSF), the Network Repository Function (NRF), Unified Data Management (UDM), the Authentication Server Function (AUSF), the Access and Mobility Management Function (AME), the Session Management Function (SMF), and the Data Network (DN), for example, carrier services and third-party internet access. All or part of the core network functions and application services can be deployed and operate on network computing environments. Therefore, this description provides an application server (e.g., AF of the 5G architecture) that includes: a transmitter which, in - 93 operation, transmits a request containing a QoS requirement for at least one of the URLLC, eMMB and mMTC services for at least one of the functions (e.g., NEF, AME, SMF, PCF, UPF, etc.) of 5GC to establish a PDU session that includes a radio carrier between a gNodeB and a UE, in accordance with the QoS requirement; and control circuitry which, in operation, performs the services using the established PDU session. The present description can be implemented in programs, physical elements, or programs in cooperation with physical elements. Each functional block used in the description of each modality described above can be partially or completely implemented by a Large Structured Integration (LSI) such as an integrated circuit, and each process described in each modality can be partially or completely controlled by the same LSI or a combination of several LSIs. The LSI can be individually configured as chips, or a chip can be configured to include some or all of the functional blocks. The LSI can include a data input and an output coupled to it. The LSI herein can be referred to as an IC, a system LSI, a higher LSI, or an ultra-LSI, depending on the degree of integration. However, the technique for implementing an integrated circuit is not limited to LSIs and can be implemented using a circuit - 94 dedicated, a general-purpose processor or a special-purpose processor. Alternatively, a field-programmable gate array (FPGA) can be used, which can be programmed after the LSI is fabricated, or a configurable processor in which the connections and settings of the circuit cells within the LSI can be reconfigured. This description can be implemented as digital or analog processing. When future integrated circuit technology replaces LSIs, as a result of advances in semiconductor or other derivative technologies, the functional blocks can be integrated using the future integrated circuit technology. Biotechnology can also be applied. The present description can be embodied by any kind of apparatus, device, or system that has a communication function, which is referred to as a communication apparatus. The communication apparatus may comprise a transceiver and processing / control circuitry. The transceiver may comprise and / or function as both a receiver and a transmitter. The transceiver, like the transmitter and receiver, may include a radio frequency (RF) module and one or more antennas. The RF module may include an amplifier, an RF modulator / demodulator, or similar components. Some examples are not - 95 Limitations of a communication device include a telephone (e.g., a cell phone, smartphone), a tablet computer, a personal computer (PC) (e.g., a laptop, a desktop computer, or a notepad), a camera (e.g., a digital still / video camera), a digital player (digital audio / video player), a wearable device (e.g., a handheld camera, a smartwatch, a tracking device), a game console, a digital book reader, a telehealth / telemedicine device (remote health and medicine), and a vehicle providing communication functionality (e.g., a car, airplane, vessel), and various combinations thereof. The communication apparatus is not limited to being portable or movable and may also include any kind of apparatus, device or system that is non-portable or stationary, such as a smart home device (e.g., an electrical appliance, lighting, smart meter, control panel), a vending machine or anything else on an internet of things (IoT) network. Communication can include exchanging data through, for example, a cellular system, a LAN system - 96 wireless, a satellite system, etc. and various combinations thereof. The communication apparatus may comprise a device such as a controller or a sensor coupled to a communication device that performs a communication function as described herein. For example, the communication apparatus may comprise a controller or a sensor that generates control signals or data signals, which are used by a communication device that performs a communication function of the communication apparatus. The communication apparatus may also include an infrastructure installation such as, for example, a base station, an access point, and any other apparatus, device, or system that communicates with or controls apparatus such as those in the non-limiting examples above. A communication device according to a modality of the present description may include control circuitry which, in operation, determines which of a plurality of communications, including at least one transmission and / or reception of information, to prioritize for adjustment of resource use between communication devices in a side-link communication. In the communication apparatus according to the - 97 modality of the present description, the plurality of communications includes other side-link communication other than the transmission and reception of information and communication between a base station and a terminal, and the control circuitry prioritizes, when a first communication and a second communication collide with each other, the second communication over the first communication, the first communication is at least one of transmission and / or reception of information and the second communication is at least one of another side-link communication and / or communication between the base station and the terminal. In the communication apparatus according to the modality of the present description, the control circuitry can prioritize, when the transmission of information and the reception of information collide with each other, the reception of information. In the communication apparatus according to the modality of the present description, the control circuitry can prioritize when the transmission of information and the reception of information collide with each other and the information is information about the reception of the communication apparatus, the reception of the information. In the communication apparatus according to the modality of the present description, the control circuitry can determine, when a resource of a first signal and a resource of a second signal whose priority is greater than the first signal collide with each other, to preferentially transmit the information about the resource of the second signal over the information about the resource of the first signal. In the communication apparatus according to the modality of the present description, the control circuitry can determine when signal collisions occur, respectively, in a first resource and a second resource that is later in time with respect to the first resource, and preferentially transmit the information about the first resource that is earlier in time. In a communication method according to a modality of the present description, a communication apparatus can determine to prioritize which of a plurality of communications, including at least one transmission and / or reception of information, to adjust the use of resources among the communication apparatuses in the side-link communication and can perform communication according to the determination. The descriptions of Japanese patent applications No. 2021-055903 filed on March 29, 2021, including the description, figures and abstract, are incorporated herein by reference in their entirety. Industrial applicability An exemplary form of the present description is useful for radio communication systems. List of reference numbers 100 base station 101 inter-UE resource adjustment information configurator 103 error-correction encoder 104 modulator 106 transmitter 107 receiver 108 demodulator 109 signal allocator 110 error-correction decoder 200 terminal 201 receiver 202 signal separator 203 demodulator 203-1 Uu demodulator 203-2 SL demodulator 204 error-correction decoder 204-1 Uu error-correction decoder 204-2 SL error-correction decoder 205 adjustment information configurator inter-EU resources - 100 - 206 Inter-EU resource adjustment information receiver 207 Error-correction encoder 207-1 Uu error-correction encoder 207-2 SL error-correction encoder 208 Modulator 208-1 Uu modulator 208-2 SL modulator 209 Signal allocator 210 Transmitter 211 Detection processor 212 Inter-EU resource adjustment information generator 213 Priority determinator It is hereby stated that, as of this date, the best method known to the applicant for putting the aforementioned invention into practice is that which is clear from the present description of the invention.

Claims

1. A communication apparatus characterized in that it comprises: control circuitry which, in operation, determines which of a plurality of communications, including at least one transmission and / or reception of information, to prioritize in order to adjust the use of resources between the communication apparatus in side-link communication; and communication circuitry which, in operation, carries out the communication in accordance with the determination of the control circuitry.

2. The communication apparatus according to claim 1, characterized in that: the plurality of communications includes other side-link communication other than the transmission and reception of information and communication between a base station and a terminal, and the control circuitry prioritizes, when a first communication and a second communication collide with each other, the second communication over the first communication, the first communication being at least one of - 102 the transmission and / or reception of information and the second communication being at least one of another side-link communication and / or the communication between the base station and the terminal.

3. The communication apparatus according to claim 1, characterized in that: the control circuitry prioritizes, when the transmission of information and the reception of information collide with each other, the reception of information.

4. The communication apparatus according to claim 1, characterized in that the control circuit prioritizes, when the information and reception of information collide with each other and the information is information about the reception of the communication apparatus, the reception of the information.

5. The communication apparatus according to claim 1, characterized in that: the control circuitry determines, when a resource of a first signal and a resource of a second signal whose priority is higher than the first signal collide with each other, to preferentially transmit the information about the resource of the second signal over the information about the resource of the first signal.

6. The communication apparatus according to claim 1, characterized in that: the control circuitry determines, when signal collisions occur, respectively, in a first resource and a second resource that is later in time than the first resource, to preferentially transmit the information about the first resource that is earlier in time.

7. A method of communication characterized in that it comprises: determining, by a communication apparatus, which of a plurality of communications, including at least one transmission and / or reception of information, to adjust the use of resources among the communication apparatuses in the side-link communication; and carrying out, by the communication apparatus, the communication in accordance with the determination.

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