WO2018062948A1 - Procédé et appareil permettant de transmettre des informations de commande et des données de v2x - Google Patents

Procédé et appareil permettant de transmettre des informations de commande et des données de v2x Download PDF

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Publication number
WO2018062948A1
WO2018062948A1 PCT/KR2017/010980 KR2017010980W WO2018062948A1 WO 2018062948 A1 WO2018062948 A1 WO 2018062948A1 KR 2017010980 W KR2017010980 W KR 2017010980W WO 2018062948 A1 WO2018062948 A1 WO 2018062948A1
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data
sub
subframe
resource
transmission
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PCT/KR2017/010980
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English (en)
Korean (ko)
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윤성준
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주식회사 아이티엘
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present invention relates to a wireless communication system, and more particularly, to a control information and data transmission method and apparatus for V2X.
  • V2X communication refers to a communication method of exchanging or sharing information such as traffic conditions while communicating with road infrastructure and other vehicles while driving.
  • V2X is a vehicle-to-vehicle (V2V) for communication between vehicles, a vehicle-to-pedestrian (V2P) for communication between terminals carried by vehicles and individuals, and a vehicle and roadside unit (RSU).
  • Vh vehicle-to-infrastructure / network
  • V2I / N which means communication between networks.
  • the roadside unit (RSU) may be a transport infrastructure entity implemented by a base station or a fixed terminal. For example, it may be an entity that transmits a speed notification to the vehicle.
  • control information such as scheduling assignment (SA) from the data transmitting terminal to the data receiving terminal
  • data may be transmitted and received based on the control information.
  • SA scheduling assignment
  • control information and data for V2X may be transmitted on the same time resource, or control information and data for V2X may be allowed to be transmitted on different time resources.
  • a specific method of determining control information for V2X and resources for data transmission has not been determined yet.
  • An object of the present invention is to provide a method and apparatus for transmitting control information and data in V2X communication.
  • the present invention provides a method and apparatus for transmitting data to a data receiving terminal by a transmitting terminal in a V2X communication supporting a base station resource scheduling mode or a terminal autonomous resource selection mode.
  • the present invention provides a method and apparatus for determining a transmission resource of control information and data in a case where control information and data are allowed to be transmitted on different time resources in V2X communication.
  • the control information and data transmission method of the first terminal comprising the steps of determining the type of the transmission time resource of the control information and the data; Determining a base station resource scheduling mode or a terminal autonomous resource selection mode; Generating the control information including information on a transmission resource of the data to be transmitted from the first terminal to the second terminal based on the determined type and the determined mode; And transmitting the control information and the data to the second terminal.
  • a control information and data transmission method and apparatus for V2X can be provided.
  • a method and apparatus for configuring V2X control information based on a scheduling or selection mode of a resource for V2X may be provided.
  • a method and apparatus for configuring V2X control information based on the type of control information and data transmission time resource setting may be provided.
  • a method and apparatus for transmitting V2X control information and data can be provided that supports the case where control information and data are allowed to be transmitted in different time resources.
  • a method and apparatus for efficiently transmitting control information and data by avoiding collision with other transmissions can be provided.
  • 1, 2 and 3 are diagrams for explaining a V2X scenario related to the present invention.
  • 4 and 5 show examples of resource pools in terms of time axis in accordance with the present invention.
  • FIG. 6 is a diagram illustrating an example of a resource pool in terms of frequency axis in accordance with the present invention.
  • FIG. 7 is a view for explaining the determination of the SA and data transmission subframe in the UE autonomous resource selection mode according to the present invention.
  • FIG. 8 is a diagram for explaining DCI and SCI in a base station resource scheduling mode according to the present invention.
  • FIG. 9 is a diagram illustrating SCI in a terminal autonomous resource selection mode according to the present invention.
  • FIG. 10 is a diagram illustrating an example in which SA and data are allowed to be transmitted in different subframes according to the present invention.
  • 11 to 13 are diagrams for describing a method of determining a frequency resource for SA transmission.
  • FIG. 14 illustrates another example in which SA and Data are allowed to be transmitted in different subframes according to the present invention.
  • FIG. 15 illustrates another example in which SA and Data are allowed to be transmitted in different subframes according to the present invention.
  • 16 is a flowchart illustrating a control information and data transmission method according to the present invention.
  • 17 is a view for explaining the configuration of a wireless device according to the present invention.
  • first and second are used only for the purpose of distinguishing one component from other components, and do not limit the order or importance between the components unless specifically mentioned. Accordingly, within the scope of the present disclosure, a first component in one embodiment may be referred to as a second component in another embodiment, and likewise, a second component in one embodiment may be referred to as a first component in another embodiment. It may also be called.
  • the present specification describes a wireless communication network
  • the operation performed in the wireless communication network is performed in the process of controlling the network and transmitting data in the system (for example, the base station) that is in charge of the wireless communication network, or the corresponding wireless Work may be done at the terminal coupled to the network.
  • a 'base station (BS)' may be replaced by terms such as a fixed station, a Node B, an eNode B (eNB), an access point (AP), and the like.
  • eNB eNode B
  • AP access point
  • the term 'terminal' may be replaced with terms such as user equipment (UE), mobile station (MS), mobile subscriber station (MSS), subscriber station (SS), and non-AP STA. Can be.
  • D2D Device to Device (communication)
  • PSSCH Physical Sidelink Shared Channel
  • PSBCH Physical Sidelink Broadcast Channel
  • PSCCH Physical Sidelink Control Channel
  • PSDCH Physical Sidelink Discovery Channel
  • control information transmitted from a terminal to another terminal may be referred to as SA.
  • SA control information transmitted from a terminal to another terminal
  • SCI control information transmitted through the PSCCH.
  • data transmitted from a terminal to another terminal may be configured in TB units. At this time, the data may be transmitted through the PSSCH.
  • an operation mode is defined according to control information for V2X communication or direct link (eg, D2D, ProSe, or SL) communication and a resource allocation method for data transmission.
  • an eNodeB or a relay node schedules resources used by a terminal to transmit V2X (or direct link) control information and / or data.
  • a terminal transmits the V2X (or direct link) control information and / or data.
  • the base station or the relay node V2X (or direct link) scheduling information on the resources to be used for control information and / or data transmission in the V2X (or direct link) through the downlink control information (DCI) ) May be provided to the transmitting terminal.
  • DCI downlink control information
  • the V2X (or direct link) transmitting terminal transmits V2X (or direct link) control information and data to the V2X (or direct link) receiving terminal, and the V2X (or direct link) receiving terminal is V2X (or direct link).
  • V2X (or direct link) data may be received based on the control information.
  • the UE selects resources used by the UE to transmit the control information and data, and such resource selection is performed by a resource pool (ie, a resource).
  • a resource pool ie, a resource.
  • Set of candidates means that the terminal is determined by sensing or the like, and thus the terminal transmits the control information and data.
  • a V2X (or direct link) transmitting terminal transmits V2X (or direct link) control information and data to a V2X (or direct link) receiving terminal on a resource selected by the V2X (or direct link) receiving terminal.
  • V2X (or direct link) data may be received based on the V2X (or direct link) control information.
  • the base station resource scheduling mode may be referred to as Mode 1 in direct link communication and Mode 3 in V2X communication.
  • the UE autonomous resource selection mode may be referred to as mode 2 in direct link communication and mode 4 in V2X communication.
  • V2X communication As an example, but the scope of the present invention is not limited to V2X communication, and embodiments of the present invention are applicable to direct link based communication such as D2D, ProSe, and SL communication. Can be.
  • V2X is a generic term for V2V, V2P, and V2I / N, and each of V2V, V2P, and V2I / N may be defined as shown in Table 1 below in connection with LTE communication.
  • V2V -covering LTE-based communication between vehicles V2P -covering LTE-based communication between a vehicle and a device carried by an individual (e.g. handheld terminal carried by a pedestrian, cyclist, driver or passenger)
  • a roadside unit is a stationary infrastructure entity supporting V2X applications that can exchange messages with other entities supporting V2X applications.
  • RSU is a term frequently used in existing ITS specifications, and the reason for introducing the term in the 3GPP specifications is to make the documents easier to read for the ITS industry.
  • RSU is a logical entity that combines V2X application logic with the functionality of an eNB (referred to as eNB-type RSU) or UE (referred to as UE-type RSU).
  • V2X communication may include PC5-based communication, a D2D communication link (ie, a direct interface between two devices supporting ProSe).
  • a D2D communication link ie, a direct interface between two devices supporting ProSe.
  • 1, 2 and 3 are diagrams for explaining a V2X scenario related to the present invention.
  • Table 2 and FIG. 1 show scenarios supporting V2X operation based only on the PC5 interface (or SL).
  • A) of FIG. 1 shows a V2V operation
  • (b) shows a V2I operation
  • (c) shows a V2P operation.
  • a UE transmits a V2X message to multiple UEs at a local area in sidelink.
  • transmitter UE or receiver UE (s) are UE-type RSU -For V2P
  • transmitter UE or receiver UE (s) are pedestrian UE.
  • Table 3 and FIG. 2 show scenarios supporting V2X operation based only on the Uu interface (ie, the interface between the UE and the eNB).
  • A) of FIG. 2 shows a V2V operation
  • (b) shows a V2I operation
  • (c) shows a V2P operation.
  • a UE transmits a V2X message to E-UTRAN in uplink and E-UTRAN transmits it to multiple UEs at a local area in downlink.
  • a UE when receiver is eNB type RSU, a UE transmits a V2I message to E-UTRAN (eNB type RSU) in uplink; when transmitter is eNB type RSU, E-UTRAN (eNB type RSU) transmits a I2V message to multiple UEs at a local area in downlink.
  • E-UTRAN For V2P, either transmitter UE or receiver UE (s) are pedestrian UE.
  • E-UTRAN performs uplink reception and downlink transmission of V2X messages.
  • E-UTRAN may use a broadcast mechanism.
  • Tables 4 and 3 show scenarios that support V2X operation using both the Uu interface and the PC5 interface (or SL).
  • (A) of FIG. 3 shows scenario 3A of Table 4
  • (b) shows scenario 3B of Table 4.
  • FIG. 4
  • Scenario3A In this scenario, a UE transmits a V2X message to other UEs in sidelink.
  • One of the receiving UEs is a UE type RSU which receives the V2X message in sidelink and transmits it to E-UTRAN in uplink.
  • E-UTRAN receives the V2X message from the UE type RSU and then transmits it to multiple UEs at a local area in downlink.
  • E-UTRAN performs uplink reception and downlink transmission of V2X messages.
  • E-UTRAN may use a broadcast mechanism.
  • a UE transmits a V2X message to E-UTRAN in uplink and E-UTRAN transmits it to one or more UE type RSUs. Then, the UE type RSU transmits the V2X message to other UEs in sidelink.
  • E-UTRAN performs uplink reception and downlink transmission of V2X messages. For downlink, E-UTRAN may use a broadcast mechanism.
  • an SA pool for a control channel (PSCCH) in which a scheduling assignment (SA) is transmitted in a V2X according to the present invention, and a data channel (PSSCH) in which data associated with an SA are transmitted The configuration of a data pool for data will be described.
  • the SA pool may be a set of resource candidates available for SA transmission
  • the data pool may be a set of resource candidates available for data transmission. That is, the SA pool is a resource pool for SA, and the data pool is a resource pool for data.
  • Each resource pool may be specifically called a subframe pool in terms of a time-domain, and a resource block resource in terms of a frequency-domain. block pool).
  • the SA pool and the data pool to be described with reference to FIGS. 4 to 6 may be defined in a UE autonomous resource selection mode (or mode 4).
  • all sidelink subframes ie, corresponding to all uplink subframes in LTE
  • V2X carriers on the frequency axis
  • the SA pool and the data pool are defined separately and the SA and / / Alternatively, a set of resource candidates available for data transmission may be configured.
  • the SA pool and the data pool described below with reference to FIGS. 4 to 6 may include a UE autonomous resource selection mode (UE autonomous resource selection mode, or mode 4) and / or a base station resource scheduling mode (eNodeB resource scheduling mode, Or in mode 3).
  • UE autonomous resource selection mode UE autonomous resource selection mode, or mode 4
  • eNodeB resource scheduling mode eNodeB resource scheduling mode, Or in mode 3
  • the D2D Frame Number (DFN) period is exemplary and the same number of subframe sets having the same or different starting point as the System Frame Number (SFN) period. It may correspond to.
  • one SFN period or DFN period may correspond to 10240 subframes corresponding to 10240 ms.
  • 4 and 5 show examples of resource pools in terms of time axis in accordance with the present invention.
  • the subframes for the SA pool and the data pool for V2X may be defined as indicated by a bitmap (for example, 1100111011 in FIG. 4) repeated for all subframes except for specific subframes. There is a number. For example, a value of 1 in the bitmap may indicate subframes for the SA pool and a data pool, and a value of 0 may indicate a subframe not belonging to the SA pool and the data pool.
  • Subframes for the SA pool and Data pool for V2X may be subframes that allow SA and / or Data transmission and / or reception for the resource pool in V2X.
  • all subframes except specific subframes include specific subframes (eg, V2X or subframes in which direct link transmission is not allowed, or V2X or the like) among all subframes belonging to the SFN or DFN period.
  • the specific subframes may be subframes used for transmission of a sidelink synchronization signal (SLSS) and / or downlink (DL) subframes or special subframes in a time division duplex (TDD).
  • SLSS sidelink synchronization signal
  • DL downlink
  • TDD time division duplex
  • the uplink (UL) subframe may be used as a sidelink (SL) subframe in TDD, but is not limited thereto.
  • the repeatedly applied bitmap may be indicated by higher layer signaling such as RRC (Radio Resource Control), and the length may be 16, 20, or 100, but is not limited thereto.
  • RRC Radio Resource Control
  • subframe indication of resource pool information indicating a subframe indication of the resource pool shown in FIG. 4 may correspond to an example of a field included in the higher level signaling.
  • the subframes for the SA pool and the data pool for V2X share the same subframes, and the "subframe indication of resource pool shown in FIG. 4. Shows an example assuming that a signaling field is commonly set for an SA pool and a data pool.
  • V2X allows SA and Data to be transmitted in different subframes (that is, SA and Data are not necessarily transmitted in different subframes, SA and Data may be transmitted in the same subframe or may be different from each other). May be transmitted in different subframes), the subframes for the SA pool and the data pool for V2X may be different subframes, and for this purpose, the "subframe indication of resource pool" signaling field shown in FIG. As shown in FIG. 5, the SA pool and the data pool may be separately set.
  • FIG. 6 is a diagram illustrating an example of a resource pool in terms of frequency axis in accordance with the present invention.
  • FIG. 6 a resource pool in terms of a frequency axis in a case where SA and data are transmitted in the same subframe is described.
  • SA and Data according to the present invention are allowed to be transmitted in different subframes, FIG.
  • the resource pool on the frequency side in the following description will be described later.
  • FIG. 6 illustrates a subframe in which a resource pool is configured on a frequency axis of the SA pool and the data pool.
  • the PSCCH transmitted in the SA pool and the PSSCH transmitted in the data pool are adjacent to each other (Adjacent between PSCCH / PSSCH) or non-adjacent between PSCCH / PSSCH.
  • the configuration may vary depending on the recognition. In this case, whether the PSCCH and the PSSCH are adjacent to each other may be indicated by, for example, a higher level signaling such as an RRC in the "Adjacency of PSCCH and PSSCH RBs" signaling field.
  • “Starting RB of sub-channels” corresponding to starting RBs of sub-channels may be defined, where N UL RBs is the total number of RBs corresponding to a system bandwidth for the UL band. Since V2X for the sidelink is defined, the UL may be replaced by the SL The "Starting RB of sub-channels" signaling field may be indicated by higher-end signaling such as RRC.
  • the number of RBs forming one sub-channel is the sub-channel size.
  • the "Sub-channel size" signaling field indicating The number of K sub-channels may be indicated by a "Number of sub-channels” signaling field, and may be included in higher-level signaling such as RRC.
  • RBs having the lowest RB index in each sub-channel belong to SA pool as well as the data pool, and one or more of them may be used for PSCCH transmission.
  • the SA may be transmitted in the RB having the lowest index among the RBs belonging to the entire data pool.
  • a resource pool In a subframe in which a resource pool is configured on the time-domain for V2X as shown in FIG. 4, one for every RBs (RB # 0 to RB # (N UL RB- 1)) on the frequency axis.
  • RB units or granularity
  • “Starting RB of sub-channels” corresponding to starting RBs of sub-channels may be defined, where N UL RBs is the total number of RBs corresponding to a system bandwidth for the UL band. Since V2X for the sidelink is defined, the UL may be replaced by the SL
  • the "Starting RB of sub-channels" signaling field may be indicated by higher-end signaling such as RRC.
  • the number of RBs forming one sub-channel is the sub-channel size.
  • the "Sub-channel size" signaling field indicating The number of K sub-channels may be indicated by a "Number of sub-channels” signaling field, and may be included in higher-level signaling such as RRC.
  • a "Starting RB of PSCCH pool" corresponding to the starting RB of the PSCCH pool may be defined, where N UL RBs are the total number of RBs corresponding to the system bandwidth for the UL band. Since V2X for the sidelink is defined, the UL may be replaced with the SL
  • the "Starting RB of PSCCH pool" signaling field may be indicated by higher-level signaling such as RRC.
  • a total of K consecutive RBs belonging to the SA pool from the RB denoted by K are equal to the number K of sub-channels in the data pool.
  • the subframe in which the SA is transmitted may be determined as follows.
  • a subframe in which an SA is transmitted in an eNodeB resource scheduling mode (or mode 3) is 4ms after (or after 4 subframes) from a subframe in which the eNodeB transmits downlink control information (DCI).
  • DCI downlink control information
  • the subframe in which the SA is transmitted may be a subframe in which Data is transmitted.
  • the UE may determine a subframe in which the SA transmits itself in the SA pool by sensing.
  • the subframe in which the SA is transmitted may be a subframe in which Data is transmitted.
  • FIG. 7 is a view for explaining the determination of the SA and data transmission subframe in the UE autonomous resource selection mode (or mode 4) according to the present invention.
  • FIG. 7 illustrates an example of selecting a subframe for transmitting the control channel and the data channel by sensing in the SA pool for the control channel (PSCCH) and the data pool for the data channel (PSSCH) associated with it. .
  • TTI m point in time for resource selection / reselection of the terminal.
  • the terminal may identify a resource occupied and used by another terminal through sensing on a sensing window corresponding to a section from "TTI m-a" to "TTI m-b".
  • the terminal may transmit a control channel and a data channel on a resource selected from the remaining resources except for resources occupied and used by the other terminal among resources belonging to the resource pool.
  • TTI m + c corresponds to a TTI transmitting SA # 1 (first SA) (or a subframe transmitting SA # 1 (first SA) when one TTI corresponds to one subframe).
  • TTI m + d is a TTI (or one TTI corresponding to one subframe) that initially transmits TB # 1 (first TB) indicated and transmitted by SA # 1 (first SA).
  • TB # 1 (the subframe in which the first TB) is first transmitted).
  • TTI m + e is a TTI (or TB # when one TTI corresponds to one subframe) for retransmission of TB # 1 (first TB) indicated and transmitted by SA # 1 (first SA). 1 may correspond to a subframe for retransmitting first TB).
  • TTI m + c ' may correspond to a TTI transmitting SA # 2 (second SA) (or a subframe transmitting SA # 2 (second SA) when one TTI corresponds to one subframe).
  • TTI m + d ' denotes a TTI (or one TTI corresponding to one subframe) that initially transmits TB # 2 (second TB) indicated and transmitted by SA # 2 (second SA). May correspond to TB # 2 (the subframe in which the second TB is first transmitted).
  • TTI m + e '" is a TTI for retransmission of TB # 2 (second TB) indicated by SA # 2 (second SA) (or TB when one TTI corresponds to one subframe); Subframe retransmitting # 2 (second TB).
  • the initial transmission time point of TB # 2 may be reserved from the initial transmission time point of TB # 1 to a time point after P * i in time.
  • P 100 and i is the network configuration or carrier-specific per carrier (or band) used for V2X within the range ⁇ 0, 1, ..., 10 ⁇ . network configuration or pre-configuration) to be signaled as one of the selected values.
  • the value of i may be selected and indicated through a "Resource reservation" signaling field (filed) of the SCI included in the SA.
  • i 0 means that there is no d 'value, i.e., no resource reservation after TTI corresponding to "P * i" from "TTI m + d" for transmission of TB # 2 (second TB). It may mean not.
  • TTI m + c is a subframe 4ms after (or after 4 subframes) from a subframe in which the base station eNodeB transmits downlink control information (DCI). It may correspond to the first subframe included in the set of resource candidates that may be used for V2X on a V2X carrier or band among frames.
  • DCI downlink control information
  • FIG. 8 is a diagram for explaining DCI and SCI in a base station resource scheduling mode according to the present invention.
  • the subframe in which the SA is transmitted is 4ms after the subframe in which the base station (eNodeB) transmits downlink control information (DCI) (four subs). It is the first subframe included in the set of resource candidates that can be used for V2X on a V2X carrier (or band) among subframes of frame after).
  • DCI downlink control information
  • the information required for the V2X (or direct link) transmitting terminal (UE A in FIG. 8) to transmit SA and Data to the V2X (or direct link) receiving terminal (UE B in FIG. 8) is provided by the base station in UE A. Can be instructed via DCI.
  • the DCI may include information as shown in Table 5.
  • Information on a resource block which is a frequency axis resource used by UE A in transmitting a SA to UE B in a subframe in which the SA is transmitted, is “CIF” corresponding to a carrier indicator field in Table 5 above.
  • a "Lowest index of sub-channel allocation" signaling field corresponding to the lowest index of the sub-channel allocation.
  • the DCI is a scheduling assignment (SA) for data transmission from UE A to UE B, and is associated with Sidelink Control Information (SCI). It can also contain content.
  • SA scheduling assignment
  • SCI Sidelink Control Information
  • the content related to the SCI indicated and included in the DCI is "Time gap between transmission and retransmission” corresponding to the time gap between transmission and retransmission, as shown in Table 5, and the initial transmission and the last. It may include a "Frequency resource of initial and last transmission" signaling field indicating a frequency resource of the transmission.
  • Time gap between transmission and retransmission and / or “Frequency resource of initial and last transmission” are merely examples, and the scope of the present invention is not limited by the names.
  • the information indicated by "Time gap between transmission and retransmission” and / or “Frequency resource of initial and last transmission” may vary depending on the specific conditions defined in the present invention.
  • the "Time gap between transmission and retransmission” field may be referred to as a first field
  • the "Frequency resource of initial and last transmission” field may be referred to as a second field.
  • FIG 9 is a view for explaining the SCI in the UE autonomous resource selection mode according to the present invention.
  • a UE can determine a subframe in which an SA is transmitted by itself within a SA pool (specifically, a subframe pool for an SA) by sensing.
  • a resource block which is a frequency axis resource used for transmitting SA in a subframe in which the SA is transmitted, may also be determined by the UE itself in an SA pool (specifically, a resource block pool for SA). Therefore, unlike the base station resource scheduling mode (eNodeB resource scheduling mode, or mode 3), the "CIF" and "Lowest index of sub-channel allocation" signaling fields are not provided from the base station through the DCI, the terminal itself You can decide.
  • the UE autonomous resource selection mode (or mode 4) content related to Sidelink Control Information (SCI) as control information (SA) required for the UE to transmit data in V2X communication. ) Is also determined by the terminal itself.
  • SA control information
  • the first field eg, "Time gap between transmission and retransmission”
  • the second field eg, "Frequency resource of initial” and last transmission ” is not provided by the base station through the DCI, but may be determined by the terminal itself.
  • SCI Servicelink Control Information
  • the UE autonomous resource selection mode the UE selects itself.
  • the terminal receiving the data (UE B) is a terminal for transmitting data
  • SA Service Assignment
  • the SCI corresponding to the control information SA (Scheduling Assignment)
  • SA Scheduling Assignment
  • SCI SCI corresponding to must be transmitted to the UE (UE B) receiving the data.
  • the SCI may include information as shown in Table 6 below.
  • information about a resource block which is a frequency axis resource used for SA transmission in an eNodeB resource scheduling mode (or mode 3), may be indicated by being included in the DCI. It may be the "CIF” and "Lowest index of sub-channel allocation” signaling fields of Table 5.
  • the "Lowest index of sub-channel allocation" signaling field transmits an SA to any resource block on a carrier or band used for the V2X in a subframe transmitting the SA. Can be used to indicate
  • the "Lowest index of sub-channel allocation" signaling field is used for transmission of data associated with the SA, among a total of K sub-channels having indices from 0 to K-1.
  • the sub-channel having the lowest index among the sub-channels may be indicated. This requires a bit of ceil (log2 (K)).
  • K is variable depending on the size of the system bandwidth and may have a value of up to 20, for example. This requires a minimum of 0 bits and a maximum of 5 bits for the "Lowest index of sub-channel allocation" field.
  • the PSCCH for transmitting SA is a sub-channel indicated by "Lowest index of sub-channel allocation" when the PSCCH for transmitting SA and the PSSCH for transmitting data are adjacent to each other on the frequency axis. channel) may be allocated in the RB having the lowest RB index (see the left figure of FIG. 6). Or, if the PSCCH for transmitting the SA and the PSSCH for transmitting the data are not adjacent to each other on the frequency axis, one-to-one to the sub-channel indicated by the "Lowest index of sub-channel allocation". It is allocated in the RB corresponding to one day (see the right figure of FIG. 6).
  • the value indicated by "Lowest index of sub-channel allocation" is an index value of 2.
  • the RB having the lowest RB index in the sub-channel corresponding to the index value 2 (for example, if the RB index corresponding to "Starting RB of sub-channels" is r in the left figure of FIG. 6, a PSCCH for transmitting SA is allocated to RB corresponding to r + 2 * "sub-channel size". Can be.
  • the RB corresponding to the sub-channel corresponding to the index value 2 on a one-to-one basis eg, For example, if the RB index corresponding to "Starting RB of PSCCH pool" is s in FIG. 6, PSCCH for transmitting SA may be allocated to RB corresponding to s + 2.
  • a first field (eg, "Time gap between transmission and retransmission") for indicating a resource used for PSSCH for transmitting data among SA contents of Table 5, and a second field ( For example, "Frequency resource of initial and last transmission” may be included in DCI in a base station resource scheduling mode (eNodeB resource scheduling mode, or mode 3).
  • the first field eg, "Time gap between transmission and retransmission” in Table 6, and the second field (eg, "Frequency resource of initial and last transmission" are the base station resource scheduling mode (eNodeB).
  • resource scheduling mode, or mode 3 the value indicated through DCI is included in the SCI as it is, but in the UE autonomous resource selection mode (UE 4, mode 4), the resource selected by the terminal itself based on sensing It can be determined according to.
  • the first field is a gap between a subframe in which TB-based data associated with an SA is initially transmitted and a subframe in which TB-based data associated with the SA is retransmitted.
  • Or may indicate a gap between a subframe in which data of a TB unit associated with the SA is initially transmitted and a subframe in which the SA is retransmitted.
  • This value may be a value from 0 to 15. If 0, it indicates that there is no retransmission of TB transmitted by indicating through the SA including the SCI, and when 1 to 15, indicating through the SA including the SCI, respectively. This means that the TB initially transmitted is retransmitted after 1 to 15 subframes, respectively.
  • the first field (eg, “Time gap between transmission and retransmission”) may be “TTI m” as shown in FIG. 7.
  • a second field indicates which RBs are used on the frequency axis in each subframe in which the TB data is initially transmitted and in a subframe retransmitted.
  • the second field (eg, "Frequency resource of initial and last transmission”) may indicate the number of sub-channels used for initial transmission of data (the number of sub-channels used for retransmission of data
  • information about the lowest index among the sub-channels used in the retransmission of data may be indicated.
  • the lowest index among the sub-channels used for this is the eNodeB resource scheduling mode. , Or mode 3) is indicated by the "Lowest index of sub-channel allocation" signaling field included in the DCI, and in the UE autonomous resource selection mode (UE 4, mode 4). It is determined by itself. In this case, information indicating how many sub-channels are transmitted may be included in the second field (eg, "Frequency resource of initial and last transmission").
  • the lowest index among the sub-channels used for this purpose is the second field (eg, "Frequency resource”). of initial and last transmission "). How many sub-channels to use for TB retransmission is indicated by the second field (e.g., "Frequency resource of initial and last transmission”). As many sub-channels are used as the number of sub-channels that were used.
  • a subframe corresponding to "TTI m + d ( TTI m + c)" and a "TTI” as shown in FIG. 7.
  • RBs for transmitting a PSSCH in a subframe corresponding to “m + e” are indicated by a second field (eg, “Frequency resource of initial and last transmission”).
  • K sub-channels are assumed for the second field (eg, "Frequency resource of initial and last transmission")
  • total ceil log2 (K * (K + 1) / 2)
  • K is at most 20, this requires a minimum of 0 bits and a maximum of 8 bits.
  • Priority may indicate the priority of Data in TB units to be transmitted.
  • Resource reservation is a parameter used to indicate a reserved resource in the UE autonomous resource selection mode (UE 4, mode 4) as described above, i ⁇ ⁇ 0, 1, 2, .. ., 10 ⁇ value.
  • the “Modulation and Coding Schme (MCS)" may indicate a modulation scheme and a coding scheme of data in units of TB to be transmitted.
  • Retransmission index indicates whether or not retransmission of data in TB units.
  • CRC Cyclical Redundancy Check
  • the above-described feature of the present invention mainly relates to a case where SA and data are transmitted in the same subframe, and includes a base station resource scheduling mode (eNodeB resource scheduling mode, or mode 3) and a UE autonomous resource selection mode. Or mode 4), a method of selecting a resource for transmitting control information and data, and accordingly, a method of transmitting control information and data has been described.
  • eNodeB resource scheduling mode eNodeB resource scheduling mode, or mode 3
  • a UE autonomous resource selection mode eNodeB resource scheduling mode 4
  • the present invention also defines a scheme in which the UE transmits control information and data even when SA and Data can be transmitted in different subframes in V2X. That is, in the present invention, when SA and Data are allowed to be transmitted in different subframes in V2X (that is, when both SA and Data are transmitted in the same subframe and when they are transmitted in different subframes). ), A method of transmitting control information and data by the terminal.
  • the terminal determines a resource for transmitting control information and data on the basis of an indication of the base station or by itself, and thus proposes a method in which the terminal transmits control information and data.
  • eNodeB resource scheduling mode eNodeB resource scheduling mode, or mode 3
  • UE UE autonomous resource selection mode
  • a "subframe indication of resource pool” signaling field may be commonly set for the SA pool and the data pool as shown in the example of FIG. 4. .
  • the subframes for the SA pool and the data pool for V2X may be different subframes, as shown in the example of FIG. 5.
  • the "subframe indication of resource pool” signaling field may be set separately for the SA pool and the data pool.
  • a "subframe indication of resource pool” signaling field may be commonly set for the SA pool and the data pool.
  • initial transmission of SA and TB-associated data in subframe X may be initially transmitted, and retransmission of SA and TB-associated data in subframe Y may be performed. have.
  • data in units of TBs associated with the SA may be transmitted in subframe X.
  • the subframe X corresponds to "TTI m + c"
  • the subframe Y is " TTI m + e ".
  • FIG. 10 is a diagram illustrating an example in which SA and data are allowed to be transmitted in different subframes according to the present invention.
  • Embodiment 1 of a V2X control information and data transmission scheme The example of FIG. 10 may be referred to as Embodiment 1 of a V2X control information and data transmission scheme, and the following operation is assumed.
  • an initial transmission of an SA may be performed in subframe X
  • an initial transmission of data in TB units associated with the SA may be performed in subframe W
  • a subframe Y may be transmitted.
  • An SA may be retransmitted and data in TB units associated with the SA may be retransmitted in subframe Z.
  • an SA may be transmitted in subframe X, and data in TB units associated with the SA may be transmitted in subframe W.
  • the subframe X corresponds to “TTI m + c 1 ”, and the subframe W is Corresponding to "TTI m + d", the subframe Y may correspond to "TTI m + c 2 ", and the subframe Z may correspond to "TTI m + e”.
  • the subframe X corresponds to "TTI m + c ' 1 "
  • the subframe W corresponds to "TTI m + d'”
  • the subframe Y may correspond to the "TTI m + c" 2 "and that the sub-frame Z is" TTI m + e to "”.
  • TTI m + c is a subframe 4ms after (or after 4 subframes) from a subframe in which the base station eNodeB transmits downlink control information (DCI). It may correspond to the first subframe included in the set of resource candidates that may be used for V2X on a V2X carrier or band among frames.
  • DCI downlink control information
  • whether the control information and data for the V2X allows to be transmitted in different time resources may be instructed by the base station to the terminal. More specifically, whether or not the V2X control information and data allow different time resources, "If the SA and its associated data in TB unit is always transmitted in the same subframe (that is, the first of the V2X control information and data transmission time resource setting Type) " and " SA and TB-associated Data can be transmitted in other subframes or in the same subframe (i.e., a second type of V2X control information and data transmission time resource configuration) " Selecting a case may correspond to information indicating whether SA and TB-associated data are transmitted.
  • the base station determines whether V2X control information and other time resources are allowed (ie, V2X control information and data transmission time resource settings) through a higher level signaling such as RRC to a V2X transmitting terminal (eg, UE A).
  • V2X transmitting terminal eg, UE A
  • V2X receiving terminal e.g, UE B
  • SCI or the like ie, transmits V2X control information and data.
  • certain signaling fields in the DCI or SCI described in Table 5 or Table 6 e.g., a first field (e.g., "Time gap between transmission and retransmission"), a second field (e.g. , "Frequency resource of initial and last transmission”)
  • a first field e.g., "Time gap between transmission and retransmission”
  • a second field e.g. , "Frequency resource of initial and last transmission”
  • V2X and SA and its associated data in TB units can be transmitted in different subframes (ie, the second type of V2X control information and data transmission time resource setting), they may be interpreted differently.
  • the base station resource is considered even in the case where the SA and associated TB data in V2X are allowed to be transmitted in different subframes (that is, the second type of V2X control information and data transmission time resource setting).
  • the scheduling mode eNodeB resource scheduling mode or mode 3
  • the UE autonomous resource selection mode UE autonomous resource selection mode, or mode 4
  • a resource for transmitting control information and data is selected, and thus the terminal selects the control information and data.
  • the first field (eg, "Time gap between transmission and retransmission") may be interpreted as follows.
  • the first field (eg, "Time gap between transmission and retransmission") Indicates a gap between a subframe in which TB unit data associated with an SA is first transmitted and a subframe in which TB unit data associated with the SA is retransmitted, or TB data associated with the SA is initially transmitted.
  • a gap may be indicated between a subframe to be transmitted and a subframe to which the SA is retransmitted.
  • the second field (eg, "Frequency resource of initial and last transmission") may be interpreted as follows.
  • the second field (eg, "Frequency resource of initial and last transmission "is the number of sub-channels used for initial transmission of data in TB (the number of sub-channels used for retransmission of data in TB is used for initial transmission).
  • the second field for example, "Frequency resource of initial and last transmission"
  • the number of sub-channels used in the initial transmission of the data in TB unit is the initial transmission Information corresponding to the number of sub-channels used at the time
  • information on how far TB data associated with the SA is transmitted in subframes away from the subframes transmitting the SA.
  • the lowest sub-channel index among the sub-channels used for retransmission of data in TB units is not explicitly indicated, but may be implicitly indicated or determined according to a predetermined rule.
  • the lowest sub-channel index among the sub-channels used for retransmission of the data in TB units may include the lowest sub-channel index among the sub-channels used during the initial transmission of the data in TB units. You can use the same index.
  • the lowest sub-channel index among the sub-channels used for retransmission of the data in TB units may be preset from the lowest sub-channel index among the sub-channels used in the initial transmission of the TB data.
  • a sub-channel index determined by the hopping pattern may be used.
  • the subframe (eg, subframe X or TTI m + c 1 ) to which the SA is initially transmitted is the base station (eNodeB).
  • the information on the resource block which is a frequency axis resource used for the transmission of the SA in the subframe (eg, subframe X or TTI m + c 1 ) on which the SA is initially transmitted is DCI. Can be directed through.
  • the information on the resource block, which is a frequency axis resource used for the initial transmission of the SA included in the DCI is indicated by the "CIF" and "Lowest index of sub-channel allocation" signaling fields. It may include.
  • the DCI includes information related to Sidelink Control Information (SCI) included in SA as information necessary for the UE to transmit data in V2X communication.
  • SCI Sidelink Control Information
  • the DCI is transmitted from the base station to the terminal.
  • the content related to the SCI included in the DCI and indicated by the first field eg, "Time gap between transmission and retransmission" and the second field (eg, "Frequency resource of initial and last transmission ").
  • the UE autonomous resource selection mode (UE autonomous resource selection mode, or mode 4) the sensing (sensing) station sub-frame itself SA is transmitted first (e. G., Sub-frame X or TTI m + c 1) by It is determined in an SA pool (specifically, a subframe pool for an SA), and used for transmission of an SA in a subframe in which the SA is initially transmitted (for example, subframe X or TTI m + c 1 ).
  • a resource block which is a frequency axis resource, is also determined by the UE itself in an SA pool (specifically, a resource block pool for SA).
  • the DCI is not received (ie, the "CIF” and "Lowest index of sub-channel allocation” signaling fields through the DCI). Rather than the terminal itself.
  • the UE autonomous resource selection mode (or mode 4) content related to SCI (Sidelink Control Information) included in SA as information required for the UE to transmit data in V2X communication is also used by the UE itself. Will decide. Accordingly, unlike the base station resource scheduling mode (eNodeB resource scheduling mode, or mode 3), the DCI is not received (ie, the first field (eg, "Time gap between transmission and retransmission") and the second field (eg, For example, rather than receiving "Frequency resource of initial and last transmission" through DCI), the UE determines itself.
  • the first field eg, "Time gap between transmission and retransmission”
  • the second field eg, For example, rather than receiving "Frequency resource of initial and last transmission” through DCI
  • SCI Servicelink Control Information
  • eNodeB resource scheduling mode or mode 3
  • UE autonomous resource selection mode UE
  • autonomous resource selection mode 4 there is a difference that the UE selects itself.
  • a terminal (receiving terminal) receiving data transmits data.
  • the SCI included in the SA is required, so the terminal transmitting the data (transmitting terminal) must transmit the SA including the SCI to the terminal receiving the data (receiving terminal). do.
  • Information on a resource block which is a frequency axis resource used for the initial transmission of an SA indicated by being included in the DCI in the eNodeB resource scheduling mode (or mode 3), may be represented by "CIF” and "Lowest index.” of sub-channel allocation "signaling field.
  • the "CIF” signaling field indicated by a 3-bit value indicates a carrier or band used for V2X.
  • the "Lowest index of sub-channel allocation” signaling field is a carrier used for the V2X in a subframe (eg, subframe X or TTI m + c 1 ) that initially transmits an SA. , Or indicate which resource block on a band to use for SA transmission.
  • the "Lowest index of sub-channel allocation" signaling field is used for transmission of data associated with the SA among a total of K sub-channels having indices from 0 to K-1.
  • the sub-channel having the lowest index among the sub-channels may be indicated. This requires bits of ceil (log2 (K)), so if the maximum possible number of sub-channels is 20, minimum 0 bits and maximum 5 bits are required.
  • the PSCCH for initially transmitting the SA will be allocated in the RB having the lowest RB index in the sub-channel indicated by the "Lowest index of sub-channel allocation".
  • the sub-channels may be configured identically in an SA transmission subframe and a data transmission subframe.
  • the PSCCH for initially transmitting the SA is allocated in the RB corresponding to the one-to-one to the sub-channel indicated by the "Lowest index of sub-channel allocation".
  • the sub-channels may be configured for a data transmission subframe, and the RBs corresponding to one-to-one to the sub-channel may be consecutive RBs.
  • a PSCCH for initially transmitting an SA is allocated in an RB corresponding to one-to-one to a sub-channel indicated by "Lowest index of sub-channel allocation".
  • the sub-channels may be configured for a data transmission subframe, and RBs corresponding to one-to-one to the sub-channel are indicated by higher-end signaling. It may be RBs having an interval of "PSCCH pool”.
  • an SA may be allocated to an RB having the lowest RB index in a sub-channel corresponding to the index value 3.
  • an RB corresponding to a sub-channel corresponding to index value 3 in a one-to-one manner for example, an RB index corresponding to “Starting RB of PSCCH pool” in FIG. 12.
  • S may be allocated to SA in RB) having an index value of s + 3.
  • an RB corresponding to a one-to-one corresponding to a sub-channel corresponding to the index value 3 (eg, an RB index corresponding to “Starting RB of PSCCH pool” in FIG. 13).
  • SA may be allocated in the RB) having an index value of s + 3j.
  • a resource block which is a frequency axis resource used for SA retransmission, also uses an RB having the same RB index as the RB initially transmitting the SA, or a preset hopping from the RB index corresponding to the RB initially transmitting the SA.
  • An RB index determined according to a hopping pattern may be used.
  • the PSCCH for initially transmitting the SA may be allocated in the RB having the lowest RB index in the sub-channel indicated by "Lowest index of sub-channel allocation" as shown in FIG. have.
  • the sub-channels may be configured in the SA transmission subframe and the data transmission subframe in the same manner.
  • the PSCCH for retransmitting the SA is a sub-channel indicated by the "Lowest index of sub-channel allocation" of a total of K sub-channel (index) from 0 to K-1 When a channel index is h, it can be allocated in the RB having the lowest RB index in the sub-channel having Kh-1 as the index value.
  • the PSCCH for initially transmitting the SA may be allocated in an RB corresponding to one-to-one to a sub-channel indicated by "Lowest index of sub-channel allocation" as shown in FIG. 12.
  • the sub-channels may be configured for a data transmission subframe, and the RBs corresponding to one-to-one to the sub-channel may be consecutive RBs. That is, h of sub-channel indexes indicated by "Lowest index of sub-channel allocation" among a total of K sub-channels having indices from 0 to K-1 are h.
  • the PSCCH for initially transmitting the SA may be allocated in the RB having s + h as the RB index value and retransmitting the SA.
  • PSCCH can be allocated in the RB having s + (Kh-1) as the RB index value.
  • the PSCCH for initially transmitting the SA may be allocated in an RB corresponding to one-to-one to a sub-channel indicated by "Lowest index of sub-channel allocation" as shown in FIG. Can be.
  • the sub-channels may be configured for a data transmission subframe, and RBs corresponding to one-to-one to the sub-channel are indicated by higher-end signaling. may be RBs having an interval of "between PSCCH pool". That is, h of sub-channel indexes indicated by "Lowest index of sub-channel allocation" among a total of K sub-channels having indices from 0 to K-1 are h.
  • the PSCCH for transmitting the first SA is s as the RB index value. It can be allocated in the RB having + hj, and the PSCCH for retransmitting SA can be allocated in the RB having s + j (Kh-1) as the RB index value.
  • the terminal receiving the V2X data ie, receiving terminal, For example, in order for UE B) to decode data transmitted from a terminal (ie, a transmitting terminal, for example, UE A) transmitting V2X data, an SCI included in the SA is required. Therefore, the terminal transmitting the data (ie, the transmitting terminal, for example, UE A) must transmit the SA including the SCI to the terminal receiving the data (ie, the receiving terminal, for example, UE B).
  • a signaling field for indicating a resource used for PSSCH for transmitting data is a first field (for example, a "Time gap"). between transmission and retransmission "), and a second field (for example," Frequency resource of initial and last transmission ").
  • the first field and the second field are also included in the DCI in the base station resource scheduling mode (eNodeB resource scheduling mode, or mode 3) to transmit data from the base station (ie, a transmitting terminal, for example, UE A). Is sent to.
  • a first field (eg, "Time gap between transmission and retransmission") is retransmitted with a subframe (eg, subframe W or TTI m + d) in which data in TB units associated with SA is first transmitted.
  • a gap may be indicated between subframes (eg, subframe Z or TTI m + e).
  • a subframe eg, subframe W or TTI m + d
  • a subframe eg, subframe Y or TTI m + c
  • the gap (gap) between 2 ).
  • the value of the first field (eg, "Time gap between transmission and retransmission") may be a value from 0 to 15. If 0, it indicates that there is no retransmission of data in TB units indicated through the SA. , 1 to 15 indicates 1 to 15 subframe intervals, respectively.
  • the second field indicates the number of sub-channels used in initial transmission of data in TB units associated with SA (when retransmission of data in TB units).
  • the number of sub-channels used for the same information is equal to the number of sub-channels used for initial transmission), and TB units associated with the SAs in subframes far from subframes transmitting the SAs. It may include information on whether Data of the is transmitted.
  • the second field e.g, "Frequency resource of initial and last transmission”
  • how far from subframes transmitting the SA is transmitted in TB units of data associated with the SA in subframes.
  • information about the interval between subframe X (or TTI m + c 1 ) and subframe W (or TTI m + d) and subframe Y (or TTI m + c 2 ) and subframe Z (or TTI m + e) may indicate the interval.
  • the number of sub-channels used for initial transmission of data in TB units associated with SA in a second field of maximum 8 bits (eg, "Frequency resource of initial and last transmission"). Excluding the number of, since the maximum number of 20 cases remain, this can indicate the interval of up to 20 subframes.
  • the lowest sub-channel index among the sub-channels used for retransmission of the data in TB unit is the sub-channel used for the initial transmission of the data in TB unit.
  • a sub-channel index determined according to a predetermined hopping pattern from the sub-channel index may be used.
  • the sub-channel index is referred to as h, and the number of sub-channels used for the initial transmission of the data in TB units (this is the sub-channel used for retransmission of the data in TB units).
  • the second field (eg, "Frequency resource of initial and last transmission") may be interpreted as follows.
  • the second field e.g, "Frequency resource of initial and last transmission” Is the number of sub-channels used for initial transmission of data in TB units (the number of sub-channels used for retransmission of data in TB units is equal to the number of sub-channels used for initial transmission). Same information), and information on the lowest index among the sub-channels used for retransmission of the data in TB units.
  • the first field (eg, "Time gap between transmission and retransmission") may be interpreted as follows.
  • the first field (eg, “Time gap between transmission and retransmission ”) indicates a gap between a subframe in which TB unit data associated with an SA is initially transmitted and a subframe in which TB unit data associated with the SA is retransmitted, or a TB associated with the SA.
  • a gap may be indicated between a subframe in which data of a unit is initially transmitted and a subframe in which the SA is retransmitted.
  • the first field (eg, “Time gap between transmission and retransmission”) may be configured with a 4-bit size.
  • the first field (for example, "Time gap between transmission and retransmission") may include three pieces of information.
  • the first information is a subframe (eg, subframe X or TTI m + c 1 ) used for the initial transmission of the SA and a subframe (eg, used during the initial transmission of data in TB units associated with the SA. , Subframe W or TTI m + d).
  • a subframe eg, subframe X or TTI m + c 1
  • the second information includes a subframe (eg, subframe W or TTI m + d) used for the initial transmission of data in TB units and a subframe (eg, subframe Y or used for retransmission of the SA).
  • TTI m + c 2 may be information indicating an interval.
  • the third information includes a subframe used for retransmission of the SA (eg, subframe Y or TTI m + c 2 ) and a subframe used for retransmission of data in TB units (eg, subframe Z or It may be information indicating an interval between TTI m + e).
  • a subframe used for retransmission of the SA eg, subframe Y or TTI m + c 2
  • a subframe used for retransmission of data in TB units eg, subframe Z or It may be information indicating an interval between TTI m + e.
  • the first, second, and third information are separately defined and included, and the sum of the sizes of these information is 4 bits.
  • the size of the first information may be A bits (for example, 1 bit)
  • the size of the second information may be B bits (for example, 2 bits)
  • the size of the third information May be 4-AB bits (eg, 1 bit).
  • 16 combinations of the first, second, and third information may be preset, and any one of the 16 combinations may be assigned to the first field (eg, “Time gap between transmission and retransmission” having a size of 4 bits. May be indicated by ").
  • the subframe (eg, subframe X or TTI m + c 1 ) to which the SA is initially transmitted is the base station (eNodeB).
  • the information on the resource block which is a frequency axis resource used for the transmission of the SA in the subframe (eg, subframe X or TTI m + c 1 ) on which the SA is initially transmitted is DCI. Can be directed through.
  • the information on the resource block, which is a frequency axis resource used for the initial transmission of the SA included in the DCI is indicated by the "CIF" and "Lowest index of sub-channel allocation" signaling fields. It may include.
  • the DCI includes information related to Sidelink Control Information (SCI) included in SA as information necessary for the UE to transmit data in V2X communication.
  • SCI Sidelink Control Information
  • the DCI is transmitted from the base station to the terminal.
  • the content related to the SCI included in the DCI and indicated by the first field eg, "Time gap between transmission and retransmission" and the second field (eg, "Frequency resource of initial and last transmission ").
  • a UE detects a subframe (eg, subframe X or TTI m + c 1 ) to which the UE first transmits itself by sensing. It is determined in an SA pool (specifically, a subframe pool for an SA), and used for transmission of an SA in a subframe in which the SA is initially transmitted (for example, subframe X or TTI m + c 1 ).
  • a resource block which is a frequency axis resource, is also determined by the UE itself in an SA pool (specifically, a resource block pool for SA).
  • the DCI is not received (ie, the "CIF” and "Lowest index of sub-channel allocation” signaling fields through the DCI). Rather than the terminal itself.
  • the UE autonomous resource selection mode (or mode 4) content related to SCI (Sidelink Control Information) included in SA as information required for the UE to transmit data in V2X communication is also used by the UE itself. Will decide. Accordingly, unlike the base station resource scheduling mode (eNodeB resource scheduling mode, or mode 3), the DCI is not received (ie, the first field (eg, "Time gap between transmission and retransmission") and the second field (eg, For example, rather than receiving "Frequency resource of initial and last transmission" through DCI), the UE determines itself.
  • the first field eg, "Time gap between transmission and retransmission”
  • the second field eg, For example, rather than receiving "Frequency resource of initial and last transmission” through DCI
  • SCI Servicelink Control Information
  • eNodeB resource scheduling mode or mode 3
  • UE autonomous resource selection mode UE
  • autonomous resource selection mode 4 there is a difference that the UE selects itself.
  • a terminal (receiving terminal) receiving data transmits data.
  • the SCI included in the SA is required, so the terminal transmitting the data (transmitting terminal) must transmit the SA including the SCI to the terminal receiving the data (receiving terminal). do.
  • Information on a resource block which is a frequency axis resource used for the initial transmission of an SA indicated by being included in the DCI in the eNodeB resource scheduling mode (or mode 3), may be represented by "CIF” and "Lowest index.” of sub-channel allocation "signaling field.
  • the "CIF” signaling field indicated by a 3-bit value indicates a carrier or band used for V2X.
  • the "Lowest index of sub-channel allocation” signaling field is a carrier used for the V2X in a subframe (eg, subframe X or TTI m + c 1 ) that initially transmits an SA. , Or indicate which resource block on a band to use for SA transmission.
  • the "Lowest index of sub-channel allocation" signaling field is used for transmission of data associated with the SA among a total of K sub-channels having indices from 0 to K-1.
  • the sub-channel having the lowest index among the sub-channels may be indicated. This requires bits of ceil (log2 (K)), so if the maximum possible number of sub-channels is 20, minimum 0 bits and maximum 5 bits are required.
  • the PSCCH for initially transmitting the SA will be allocated in the RB having the lowest RB index in the sub-channel indicated by the "Lowest index of sub-channel allocation".
  • the sub-channels may be configured identically in an SA transmission subframe and a data transmission subframe.
  • the PSCCH for initially transmitting the SA is allocated in the RB corresponding to the one-to-one to the sub-channel indicated by the "Lowest index of sub-channel allocation".
  • the sub-channels may be configured for a data transmission subframe, and the RBs corresponding to one-to-one to the sub-channel may be consecutive RBs.
  • a PSCCH for initially transmitting an SA is allocated in an RB corresponding to one-to-one to a sub-channel indicated by "Lowest index of sub-channel allocation".
  • the sub-channels may be configured for a data transmission subframe, and RBs corresponding to one-to-one to the sub-channel are indicated by higher-end signaling. It may be RBs having an interval of "PSCCH pool”.
  • an SA may be allocated to an RB having the lowest RB index in a sub-channel corresponding to the index value 3.
  • an RB corresponding to a sub-channel corresponding to index value 3 in a one-to-one manner for example, an RB index corresponding to “Starting RB of PSCCH pool” in FIG. 12.
  • S may be allocated to SA in RB) having an index value of s + 3.
  • an RB corresponding to a one-to-one corresponding to a sub-channel corresponding to the index value 3 (eg, an RB index corresponding to “Starting RB of PSCCH pool” in FIG. 13).
  • SA may be allocated in the RB) having an index value of s + 3j.
  • a resource block which is a frequency axis resource used for SA retransmission, also uses an RB having the same RB index as the RB initially transmitting the SA, or a preset hopping from the RB index corresponding to the RB initially transmitting the SA.
  • An RB index determined according to a hopping pattern may be used.
  • the PSCCH for initially transmitting the SA may be allocated in the RB having the lowest RB index in the sub-channel indicated by "Lowest index of sub-channel allocation" as shown in FIG. have.
  • the sub-channels may be configured in the SA transmission subframe and the data transmission subframe in the same manner.
  • the PSCCH for retransmitting the SA is a sub-channel indicated by the "Lowest index of sub-channel allocation" of a total of K sub-channel (index) from 0 to K-1 When a channel index is h, it can be allocated in the RB having the lowest RB index in the sub-channel having Kh-1 as the index value.
  • the PSCCH for initially transmitting the SA may be allocated in an RB corresponding to one-to-one to a sub-channel indicated by "Lowest index of sub-channel allocation" as shown in FIG. 12.
  • the sub-channels may be configured for a data transmission subframe, and the RBs corresponding to one-to-one to the sub-channel may be consecutive RBs. That is, h of sub-channel indexes indicated by "Lowest index of sub-channel allocation" among a total of K sub-channels having indices from 0 to K-1 are h.
  • the PSCCH for initially transmitting the SA may be allocated in the RB having s + h as the RB index value and retransmitting the SA.
  • PSCCH can be allocated in the RB having s + (Kh-1) as the RB index value.
  • the PSCCH for initially transmitting the SA may be allocated in an RB corresponding to one-to-one to a sub-channel indicated by "Lowest index of sub-channel allocation" as shown in FIG. Can be.
  • the sub-channels may be configured for a data transmission subframe, and RBs corresponding to one-to-one to the sub-channel are indicated by higher-end signaling. may be RBs having an interval of "between PSCCH pool". That is, h of sub-channel indexes indicated by "Lowest index of sub-channel allocation" among a total of K sub-channels having indices from 0 to K-1 are h.
  • the PSCCH for transmitting the first SA is s as the RB index value. It can be allocated in the RB having + hj, and the PSCCH for retransmitting SA can be allocated in the RB having s + j (Kh-1) as the RB index value.
  • the terminal receiving the V2X data ie, receiving terminal, For example, in order for UE B) to decode data transmitted from a terminal (ie, a transmitting terminal, for example, UE A) transmitting V2X data, an SCI included in the SA is required. Therefore, the terminal transmitting the data (ie, the transmitting terminal, for example, UE A) must transmit the SA including the SCI to the terminal receiving the data (ie, the receiving terminal, for example, UE B).
  • a signaling field for indicating a resource used for PSSCH for transmitting data is a first field (for example, a "Time gap"). between transmission and retransmission "), and a second field (for example," Frequency resource of initial and last transmission ").
  • the first field and the second field are also included in the DCI in the base station resource scheduling mode (eNodeB resource scheduling mode, or mode 3) to transmit data from the base station (ie, a transmitting terminal, for example, UE A). Is sent to.
  • information indicated by the first field may be defined as follows.
  • a first field may include a subframe (eg, subframe X or TTI m + c 1 ) used for initial transmission of the SA and the Information of size
  • a bit eg, 1 bit
  • indicating an interval between subframes eg, subframe W or TTI m + d
  • subframes used for initial transmission of data in units (for example, subframe W or TTI m + d) and subframes used for retransmission of the SA (for example, subframe Y or TTI m + c 2 ).
  • Information of size B bits (for example, 2 bits) indicating an interval between the subframes used for retransmission of the SA (for example, subframe Y or TTI m + c 2 ) and data in TB units
  • Spacing between subframes (eg, subframe Z or TTI m + e) used for retransmission AB 4-bit indicative of (e. G., 1 bit) may include a size of the information.
  • the first field may include a subframe (eg, subframe X or TTI m + c 1 ) used for initial transmission of the SA and the SA.
  • First information indicating an interval between subframes (eg, subframe W or TTI m + d) used for the first transmission of data in units of TB, and a subframe used in the first transmission of data in TB;
  • second information indicating an interval between a subframe W or TTI m + d and a subframe used for retransmission of the SA (eg, subframe Y or TTI m + c 2 ), and the SA Between a subframe (eg, subframe Y or TTI m + c 2 ) used for retransmission of the subframe (eg, subframe Z or TTI m + e) used for retransmission of data in TB units.
  • the combination of the third information indicating the interval may be indicated.
  • the first field eg, subframe X or TTI m + c
  • a second field indicates which RBs are used on the frequency axis in the subframe in which the TB unit data is initially transmitted and in the reframe. Instruct. Specifically, the second field (eg, "Frequency resource of initial and last transmission”) may indicate the number of sub-channels used for initial transmission of data (the number of sub-channels used for retransmission of data In addition to the information on the number of sub-channels used in the initial transmission), information about the lowest index among the sub-channels used in the retransmission of data may be indicated.
  • the lowest index among the sub-channels used for this is eNodeB resource scheduling mode (eNodeB resource scheduling mode, Alternatively, in case of mode 3), it is indicated by a signaling field of “Lowest index of sub-channel allocation” included in DCI, and in case of UE autonomous resource selection mode (or mode 4), the UE itself. Determined by In this case, information indicating how many sub-channels are transmitted may be included in the second field (eg, "Frequency resource of initial and last transmission").
  • the lowest index among the sub-channels used for this purpose is the second field (eg, "Frequency resource”). of initial and last transmission "). How many sub-channels to use for TB retransmission is indicated by the second field (e.g., "Frequency resource of initial and last transmission”). As many sub-channels are used as the number of sub-channels that were used.
  • RBs for transmitting the PSSCH in the subframe are indicated by a second field (eg, "Frequency resource of initial and last transmission").
  • K sub-channels are assumed for the second field (eg, "Frequency resource of initial and last transmission")
  • total ceil log2 (K * (K + 1) / 2)
  • K is at most 20, this requires a minimum of 0 bits and a maximum of 8 bits.
  • FIG. 14 illustrates another example in which SA and Data are allowed to be transmitted in different subframes according to the present invention.
  • Embodiment 2 of a V2X control information and data transmission scheme, and the following operation is assumed.
  • an SA When retransmission is performed, an SA may be transmitted in subframe X, an initial transmission of TB data associated with the SA in subframe W may be performed, and the SA may be transmitted in subframe Z. Retransmission of data in units of TB associated with.
  • an SA When retransmission is not performed, an SA may be transmitted in subframe X, and data in TB units associated with the SA may be transmitted in subframe W.
  • the subframe X corresponds to "TTI m + c"
  • the subframe W is " TTI m + d ”
  • the subframe Z may correspond to“ TTI m + e ”.
  • another SA in the reserved resource after P * i (P 100ms, i ⁇ ⁇ 0, 1, 2, ..., 10 ⁇ ) and TB unit associated therewith
  • the subframe X corresponds to "TTI m + c '"
  • the subframe W corresponds to "TTI m + d'"
  • the UE autonomous resource selection mode (or mode 4) is assumed and described.
  • a description of the relationship between the TTIs after the "TTI m" except for the sensing window is shown in FIG.
  • the case may also be applied to a mode (eNodeB resource scheduling mode, or mode 3). That is, in the example of FIG. 14, except for the sensing window, “TTI m + c” is a subframe 4ms after (or after 4 subframes) from a subframe in which the base station eNodeB transmits downlink control information (DCI). It may correspond to the first subframe included in the set of resource candidates that may be used for V2X on a V2X carrier or band among frames.
  • DCI downlink control information
  • whether the control information and data for the V2X allows to be transmitted in different time resources may be instructed by the base station to the terminal. More specifically, whether or not the V2X control information and data allow different time resources, "If the SA and its associated data in TB unit is always transmitted in the same subframe (that is, the first of the V2X control information and data transmission time resource setting Type) " and " SA and TB-associated Data can be transmitted in other subframes or in the same subframe (i.e., a second type of V2X control information and data transmission time resource configuration) " Selecting a case may correspond to information indicating whether SA and TB-associated data are transmitted.
  • the base station determines whether V2X control information and other time resources are allowed (ie, V2X control information and data transmission time resource settings) through a higher level signaling such as RRC to a V2X transmitting terminal (eg, UE A).
  • V2X transmitting terminal eg, UE A
  • the V2X transmitting terminal may allow the V2X receiving terminal (eg, UE B) to allow V2X control information and other time resources of data (eg, V2X control information and data) through the SCI.
  • V2X transmitting terminal eg, UE A
  • the V2X receiving terminal eg, UE B
  • V2X control information and other time resources of data eg, V2X control information and data
  • certain signaling fields in the DCI or SCI described in Table 5 or Table 6 e.g., a first field (e.g., "Time gap between transmission and retransmission"), a second field (e.g. , "Frequency resource of initial and last transmission”)
  • a first field e.g., "Time gap between transmission and retransmission”
  • a second field e.g. , "Frequency resource of initial and last transmission”
  • V2X and SA and its associated data in TB units can be transmitted in different subframes (ie, the second type of V2X control information and data transmission time resource setting), they may be interpreted differently.
  • the base station resource is considered even in the case where the SA and associated TB data in V2X are allowed to be transmitted in different subframes (that is, the second type of V2X control information and data transmission time resource setting).
  • the scheduling mode eNodeB resource scheduling mode or mode 3
  • the UE autonomous resource selection mode UE autonomous resource selection mode, or mode 4
  • a resource for transmitting control information and data is selected, and thus the terminal selects the control information and data.
  • the first field (eg, "Time gap between transmission and retransmission") may be interpreted as follows.
  • the first field (eg, "Time gap between transmission and retransmission") ) May indicate a gap between a subframe in which data in TB units associated with an SA is first transmitted and a subframe in which data in TB units associated with the SA are retransmitted.
  • the second field (eg, "Frequency resource of initial and last transmission") may be interpreted as follows.
  • the second field (eg, "Frequency resource of initial and last transmission "is the number of sub-channels used for initial transmission of data in TB (the number of sub-channels used for retransmission of data in TB is used for initial transmission).
  • the second field for example, "Frequency resource of initial and last transmission"
  • the number of sub-channels used in the initial transmission of the data in TB unit is the initial transmission Information corresponding to the number of sub-channels used at the time
  • information on how far TB data associated with the SA is transmitted in subframes away from the subframes transmitting the SA.
  • the lowest sub-channel index among the sub-channels used for retransmission of data in TB units is not explicitly indicated, but may be implicitly indicated or determined according to a predetermined rule.
  • the lowest sub-channel index among the sub-channels used for retransmission of the data in TB units may include the lowest sub-channel index among the sub-channels used during the initial transmission of the data in TB units. You can use the same index.
  • the lowest sub-channel index among the sub-channels used for retransmission of the data in TB units may be preset from the lowest sub-channel index among the sub-channels used in the initial transmission of the TB data.
  • a sub-channel index determined by the hopping pattern may be used.
  • a subframe (eg, subframe X or TTI m + c) in which an SA is transmitted is selected from a base station (eNodeB) as a DCI.
  • Subframe information on a resource block which is a frequency axis resource used for transmission of an SA in a subframe in which the SA is transmitted (for example, subframe X or TTI m + c) is transmitted through DCI. Can be indicated.
  • the information on the resource block which is a frequency axis resource used for transmission of the SA included in the DCI is indicated by the "CIF" and "Lowest index of sub-channel allocation" signaling fields. It may include.
  • the DCI includes information related to Sidelink Control Information (SCI) included in SA as information necessary for the UE to transmit data in V2X communication.
  • SCI Sidelink Control Information
  • the DCI is transmitted from the base station to the terminal.
  • the content related to the SCI included in the DCI and indicated by the first field eg, "Time gap between transmission and retransmission" and the second field (eg, "Frequency resource of initial and last transmission ").
  • a SA pool includes a subframe (eg, subframe X or TTI m + c) in which the UE transmits the SA itself by sensing.
  • a subframe pool for SA is determined, and is a frequency axis resource used for transmission of an SA in a subframe in which the SA is transmitted (for example, subframe X or TTI m + c).
  • the resource block is also determined by the UE itself in an SA pool (specifically, a resource block pool for SA).
  • the DCI is not received (ie, the "CIF” and "Lowest index of sub-channel allocation” signaling fields through the DCI). Rather than the terminal itself.
  • the UE autonomous resource selection mode (or mode 4) content related to SCI (Sidelink Control Information) included in SA as information required for the UE to transmit data in V2X communication is also used by the UE itself. Will decide. Accordingly, unlike the base station resource scheduling mode (eNodeB resource scheduling mode, or mode 3), the DCI is not received (ie, the first field (eg, "Time gap between transmission and retransmission") and the second field (eg, For example, rather than receiving "Frequency resource of initial and last transmission" through DCI), the UE determines itself.
  • the first field eg, "Time gap between transmission and retransmission”
  • the second field eg, For example, rather than receiving "Frequency resource of initial and last transmission” through DCI
  • SCI Servicelink Control Information
  • eNodeB resource scheduling mode or mode 3
  • UE autonomous resource selection mode UE
  • autonomous resource selection mode 4 there is a difference that the UE selects itself.
  • a terminal (receiving terminal) receiving data transmits data.
  • the SCI included in the SA is required, so the terminal transmitting the data (transmitting terminal) must transmit the SA including the SCI to the terminal receiving the data (receiving terminal). do.
  • Information on a resource block which is a frequency axis resource used for transmission of an SA indicated by being included in the DCI in an eNodeB resource scheduling mode (or mode 3), is defined as "CIF” and "Lowest index of.” sub-channel allocation "signaling field.
  • the "CIF” signaling field indicated by a 3-bit value indicates a carrier or band used for V2X.
  • the "Lowest index of sub-channel allocation” signaling field is a carrier used for the V2X in a subframe (eg, subframe X or TTI m + c) that transmits an SA, or It indicates which resource block (band) to use for SA transmission.
  • the "Lowest index of sub-channel allocation" signaling field is used for transmission of data associated with the SA among a total of K sub-channels having indices from 0 to K-1.
  • the sub-channel having the lowest index among the sub-channels may be indicated. This requires bits of ceil (log2 (K)), so if the maximum possible number of sub-channels is 20, minimum 0 bits and maximum 5 bits are required.
  • the PSCCH for transmitting SA may be allocated in the RB having the lowest RB index in the sub-channel indicated by "Lowest index of sub-channel allocation".
  • the sub-channels may be configured identically in an SA transmission subframe and a data transmission subframe.
  • the PSCCH for transmitting the SA may be allocated in an RB corresponding one-to-one to a sub-channel indicated by "Lowest index of sub-channel allocation". Can be.
  • the sub-channels may be configured for a data transmission subframe, and the RBs corresponding to one-to-one to the sub-channel may be consecutive RBs.
  • the PSCCH for transmitting the SA has an allocation in the RB corresponding one-to-one to the sub-channel indicated by "Lowest index of sub-channel allocation".
  • the sub-channels may be configured for a data transmission subframe, and RBs corresponding to one-to-one to the sub-channel are indicated by higher-end signaling. It may be RBs having an interval of "PSCCH pool”.
  • an SA may be allocated to an RB having the lowest RB index in a sub-channel corresponding to the index value 3.
  • an RB corresponding to a sub-channel corresponding to index value 3 in a one-to-one manner for example, an RB index corresponding to “Starting RB of PSCCH pool” in FIG. 12.
  • S may be allocated to SA in RB) having an index value of s + 3.
  • an RB corresponding to a one-to-one corresponding to a sub-channel corresponding to the index value 3 (eg, an RB index corresponding to “Starting RB of PSCCH pool” in FIG. 13).
  • SA may be allocated in the RB) having an index value of s + 3j.
  • the terminal receiving the V2X data ie, receiving terminal, For example, in order for UE B) to decode data transmitted from a terminal (ie, a transmitting terminal, for example, UE A) transmitting V2X data, an SCI included in the SA is required. Therefore, the terminal transmitting the data (ie, the transmitting terminal, for example, UE A) must transmit the SA including the SCI to the terminal receiving the data (ie, the receiving terminal, for example, UE B).
  • a signaling field for indicating a resource used for PSSCH for transmitting data is a first field (for example, a "Time gap"). between transmission and retransmission "), and a second field (for example," Frequency resource of initial and last transmission ").
  • the first field and the second field are also included in the DCI in the base station resource scheduling mode (eNodeB resource scheduling mode, or mode 3) to transmit data from the base station (ie, a transmitting terminal, for example, UE A). Is sent to.
  • a first field (eg, "Time gap between transmission and retransmission") is retransmitted with a subframe (eg, subframe W or TTI m + d) in which data in TB units associated with SA is first transmitted.
  • a gap may be indicated between subframes (eg, subframe Z or TTI m + e).
  • the value of the first field (eg, "Time gap between transmission and retransmission") may be a value from 0 to 15. If 0, it indicates that there is no retransmission of data in TB units indicated through the SA. , 1 to 15 indicates 1 to 15 subframe intervals, respectively.
  • the second field indicates the number of sub-channels used in initial transmission of data in TB units associated with SA (when retransmission of data in TB units).
  • the number of sub-channels used for the same information is equal to the number of sub-channels used for initial transmission), and TB units associated with the SAs in subframes far from subframes transmitting the SAs. It may include information on whether Data of the is transmitted.
  • the information about the subframe X may indicate an interval between the subframe W (or TTI m + d).
  • the number of sub-channels used for initial transmission of data in TB units associated with SA in a second field of maximum 8 bits (eg, "Frequency resource of initial and last transmission"). Excluding the number of, since the maximum number of 20 cases remain, this can indicate the interval of up to 20 subframes.
  • the lowest sub-channel index among the sub-channels used for retransmission of the data in TB unit is the sub-channel used for the initial transmission of the data in TB unit.
  • a sub-channel index determined according to a predetermined hopping pattern from the sub-channel index may be used.
  • the sub-channel index is referred to as h, and the number of sub-channels used for the initial transmission of the data in TB units (this is the sub-channel used for retransmission of the data in TB units).
  • the second field (eg, "Frequency resource of initial and last transmission") may be interpreted as follows.
  • the second field e.g, "Frequency resource of initial and last transmission” Is the number of sub-channels used for initial transmission of data in TB units (the number of sub-channels used for retransmission of data in TB units is equal to the number of sub-channels used for initial transmission). Same information), and information on the lowest index among the sub-channels used for retransmission of the data in TB units.
  • the first field (eg, "Time gap between transmission and retransmission") may be interpreted as follows.
  • the first field (eg, “Time gap between transmission and retransmission ”) may indicate a gap between a subframe in which data in TB units associated with an SA is initially transmitted and a subframe in which data in TB units associated with the SA are retransmitted.
  • the first field (eg, “Time gap between transmission and retransmission”) may be configured with a 4-bit size.
  • the first field (for example, "Time gap between transmission and retransmission") may include the following two pieces of information.
  • the first information may be a subframe (eg, subframe X or TTI m + c) used for transmission of the SA and a subframe (eg, subframe used during initial transmission of data in TB units associated with the SA. Information indicating the interval between frames W or TTI m + d).
  • a subframe eg, subframe X or TTI m + c
  • a subframe eg, subframe used during initial transmission of data in TB units associated with the SA.
  • the second information includes a subframe (eg, subframe W or TTI m + d) used for initial transmission of data in TB units and a subframe (eg, subframe used in retransmission of data in TB units).
  • a subframe eg, subframe W or TTI m + d
  • a subframe eg, subframe used in retransmission of data in TB units.
  • the first and second information may be separately defined and included, and the sum of the sizes of the information may be 4 bits.
  • the size of the first information may be A bits (for example, 1 or 2 bits)
  • the size of the second information may be 4-A bits (for example, 3 bits or 2 bits).
  • 16 combinations of the first and second information are preset, and any one of the 16 combinations is assigned to the first field (eg, “Time gap between transmission and retransmission”) having a size of 4 bits. May be indicated by
  • a subframe (eg, subframe X or TTI m + c) in which an SA is transmitted is selected from a base station (eNodeB) as a DCI.
  • Subframe information on a resource block which is a frequency axis resource used for transmission of an SA in a subframe in which the SA is transmitted (for example, subframe X or TTI m + c) is transmitted through DCI. Can be indicated.
  • the information on the resource block which is a frequency axis resource used for transmission of the SA included in the DCI is indicated by the "CIF" and "Lowest index of sub-channel allocation" signaling fields. It may include.
  • the DCI includes information related to Sidelink Control Information (SCI) included in SA as information necessary for the UE to transmit data in V2X communication.
  • SCI Sidelink Control Information
  • the DCI is transmitted from the base station to the terminal.
  • the content related to the SCI included in the DCI and indicated by the first field eg, "Time gap between transmission and retransmission" and the second field (eg, "Frequency resource of initial and last transmission ").
  • a SA pool includes a subframe (eg, subframe X or TTI m + c) in which the UE transmits the SA itself by sensing.
  • a subframe pool for SA is determined, and is a frequency axis resource used for transmission of an SA in a subframe in which the SA is transmitted (for example, subframe X or TTI m + c).
  • the resource block is also determined by the UE itself in an SA pool (specifically, a resource block pool for SA).
  • the DCI is not received (ie, the "CIF” and "Lowest index of sub-channel allocation” signaling fields through the DCI). Rather than the terminal itself.
  • the UE autonomous resource selection mode (or mode 4) content related to SCI (Sidelink Control Information) included in SA as information required for the UE to transmit data in V2X communication is also used by the UE itself. Will decide. Accordingly, unlike the base station resource scheduling mode (eNodeB resource scheduling mode, or mode 3), the DCI is not received (ie, the first field (eg, "Time gap between transmission and retransmission") and the second field (eg, For example, rather than receiving "Frequency resource of initial and last transmission" through DCI), the UE determines itself.
  • the first field eg, "Time gap between transmission and retransmission”
  • the second field eg, For example, rather than receiving "Frequency resource of initial and last transmission” through DCI
  • SCI Servicelink Control Information
  • eNodeB resource scheduling mode or mode 3
  • UE autonomous resource selection mode UE
  • autonomous resource selection mode 4 there is a difference that the UE selects itself.
  • a terminal (receiving terminal) receiving data transmits data.
  • the SCI included in the SA is required, so the terminal transmitting the data (transmitting terminal) must transmit the SA including the SCI to the terminal receiving the data (receiving terminal). do.
  • Information on a resource block which is a frequency axis resource used for transmission of an SA indicated by being included in the DCI in an eNodeB resource scheduling mode (or mode 3), is defined as "CIF” and "Lowest index of.” sub-channel allocation "signaling field.
  • the "CIF” signaling field indicated by a 3-bit value indicates a carrier or band used for V2X.
  • the "Lowest index of sub-channel allocation” signaling field is a carrier used for the V2X in a subframe (eg, subframe X or TTI m + c) that transmits an SA, or It indicates which resource block (band) to use for SA transmission.
  • the "Lowest index of sub-channel allocation" signaling field is used for transmission of data associated with the SA among a total of K sub-channels having indices from 0 to K-1.
  • the sub-channel having the lowest index among the sub-channels may be indicated. This requires bits of ceil (log2 (K)), so if the maximum possible number of sub-channels is 20, minimum 0 bits and maximum 5 bits are required.
  • the PSCCH for transmitting SA may be allocated in the RB having the lowest RB index in the sub-channel indicated by "Lowest index of sub-channel allocation".
  • the sub-channels may be configured identically in an SA transmission subframe and a data transmission subframe.
  • the PSCCH for transmitting the SA may be allocated in an RB corresponding one-to-one to a sub-channel indicated by "Lowest index of sub-channel allocation". Can be.
  • the sub-channels may be configured for a data transmission subframe, and the RBs corresponding to one-to-one to the sub-channel may be consecutive RBs.
  • the PSCCH for transmitting the SA has an allocation in the RB corresponding one-to-one to the sub-channel indicated by "Lowest index of sub-channel allocation".
  • the sub-channels may be configured for a data transmission subframe, and RBs corresponding to one-to-one to the sub-channel are indicated by higher-end signaling. It may be RBs having an interval of "PSCCH pool”.
  • an SA may be allocated to an RB having the lowest RB index in a sub-channel corresponding to the index value 3.
  • an RB corresponding to a sub-channel corresponding to index value 3 in a one-to-one manner for example, an RB index corresponding to “Starting RB of PSCCH pool” in FIG. 12.
  • S may be allocated to SA in RB) having an index value of s + 3.
  • an RB corresponding to a one-to-one corresponding to a sub-channel corresponding to the index value 3 (eg, an RB index corresponding to “Starting RB of PSCCH pool” in FIG. 13).
  • SA may be allocated in the RB) having an index value of s + 3j.
  • the terminal receiving the V2X data ie, receiving terminal, For example, in order for UE B) to decode data transmitted from a terminal (ie, a transmitting terminal, for example, UE A) transmitting V2X data, an SCI included in the SA is required. Therefore, the terminal transmitting the data (ie, the transmitting terminal, for example, UE A) must transmit the SA including the SCI to the terminal receiving the data (ie, the receiving terminal, for example, UE B).
  • a signaling field for indicating a resource used for PSSCH for transmitting data is a first field (for example, a "Time gap"). between transmission and retransmission "), and a second field (for example," Frequency resource of initial and last transmission ").
  • the first field and the second field are also included in the DCI in the base station resource scheduling mode (eNodeB resource scheduling mode, or mode 3) to transmit data from the base station (ie, a transmitting terminal, for example, UE A). Is sent to.
  • information indicated by the first field may be defined as follows.
  • a first field may include a subframe (eg, subframe X or TTI m + c) used for transmission of the SA and the SA.
  • Information of size A bits (e.g., 1 bit or 2 bits) indicating the interval between subframes (e.g., subframe W or TTI m + d) used for the first transmission of Data in associated TB units, and
  • Subframe e.g, subframe W or TTI m + d
  • subframe eg, subframe Z or TTI used in retransmission of data in TB units
  • m + e may include information having a size of 4-A bits (for example, 3 bits or 2 bits) indicating an interval between m + e).
  • a first field (eg, "Time gap between transmission and retransmission”) may be associated with a subframe (eg, subframe X or TTI m + c) used during initial transmission of the SA and the SA.
  • First information indicating an interval between subframes (eg, subframe W or TTI m + d) used for initial transmission of data in TB units, and a subframe used for initial transmission of data in TB units (
  • a combination of second information indicating an interval between a subframe W or TTI m + d
  • a subframe eg, subframe Z or TTI m + e
  • the first field (eg, “Time gap between transmission and retransmission”) may indicate a combination of any one of 16 preset combinations of the first and second information.
  • a second field indicates which RBs are used on the frequency axis in the subframe in which the TB unit data is initially transmitted and in the reframe. Instruct. Specifically, the second field (eg, "Frequency resource of initial and last transmission”) may indicate the number of sub-channels used for initial transmission of data (the number of sub-channels used for retransmission of data In addition to the information on the number of sub-channels used in the initial transmission), information about the lowest index among the sub-channels used in the retransmission of data may be indicated.
  • the lowest index among the sub-channels used for this is eNodeB resource scheduling mode (eNodeB resource scheduling mode, Alternatively, in case of mode 3), it is indicated by a signaling field of “Lowest index of sub-channel allocation” included in DCI, and in case of UE autonomous resource selection mode (or mode 4), the UE itself. Determined by In this case, information indicating how many sub-channels are transmitted may be included in the second field (eg, "Frequency resource of initial and last transmission").
  • the lowest index among the sub-channels used for this purpose is the second field (eg, "Frequency resource”). of initial and last transmission "). How many sub-channels to use for TB retransmission is indicated by the second field (e.g., "Frequency resource of initial and last transmission”). As many sub-channels are used as the number of sub-channels that were used.
  • a subframe corresponding to "TTI m + d" and a "TTI m + e" as shown in FIG. RBs for transmitting the PSSCH in the subframe are indicated by a second field (eg, "Frequency resource of initial and last transmission").
  • K sub-channels are assumed for the second field (eg, "Frequency resource of initial and last transmission")
  • total ceil log2 (K * (K + 1) / 2)
  • K is at most 20, this requires a minimum of 0 bits and a maximum of 8 bits.
  • FIG. 15 illustrates another example in which SA and Data are allowed to be transmitted in different subframes according to the present invention.
  • Embodiment 3 of a V2X control information and data transmission scheme, and the following operation is assumed.
  • Embodiment 3 only the case of not performing retransmission is considered.
  • an SA may be transmitted in subframe X, and data in TB units associated with the SA may be transmitted in subframe W.
  • the subframe X corresponds to "TTI m + c"
  • the subframe W is " TTI m + d ".
  • P * i (P 100ms, i ⁇ ⁇ 0, 1, 2, ..., 10 ⁇ ) and TB unit associated therewith
  • the subframe X may correspond to "TTI m + c '"
  • the subframe W may correspond to "TTI m + d'" as shown in FIG. 15.
  • the UE autonomous resource selection mode (or mode 4) is assumed and described. However, in FIG. 15, a description of the relationship between the TTIs after the "TTI m" except for the sensing window is shown in FIG. The case may also be applied to a mode (eNodeB resource scheduling mode, or mode 3). That is, in the example of FIG. 15, except for the sensing window, “TTI m + c” is a subframe 4ms after (or after 4 subframes) from a subframe in which the base station eNodeB transmits downlink control information (DCI). It may correspond to the first subframe included in the set of resource candidates that may be used for V2X on a V2X carrier or band among frames.
  • DCI downlink control information
  • whether the control information and data for the V2X allows to be transmitted in different time resources may be instructed by the base station to the terminal. More specifically, whether or not the V2X control information and data allow different time resources, "If the SA and its associated data in TB unit is always transmitted in the same subframe (that is, the first of the V2X control information and data transmission time resource setting Type) " and " SA and TB-associated Data can be transmitted in other subframes or in the same subframe (i.e., a second type of V2X control information and data transmission time resource configuration) " Selecting a case may correspond to information indicating whether SA and TB-associated data are transmitted.
  • the base station determines whether V2X control information and other time resources are allowed (ie, V2X control information and data transmission time resource settings) through a higher level signaling such as RRC to a V2X transmitting terminal (eg, UE A).
  • V2X transmitting terminal eg, UE A
  • V2X receiving terminal e.g, UE B
  • SCI or the like ie, transmits V2X control information and data.
  • certain signaling fields in the DCI or SCI described in Table 5 or Table 6 e.g., a first field (e.g., "Time gap between transmission and retransmission"), a second field (e.g. , "Frequency resource of initial and last transmission”)
  • a first field e.g., "Time gap between transmission and retransmission”
  • a second field e.g. , "Frequency resource of initial and last transmission”
  • V2X and SA and its associated data in TB units can be transmitted in different subframes (ie, the second type of V2X control information and data transmission time resource setting), they may be interpreted differently.
  • the base station resource is considered even in the case where the SA and associated TB data in V2X are allowed to be transmitted in different subframes (that is, the second type of V2X control information and data transmission time resource setting).
  • the scheduling mode eNodeB resource scheduling mode or mode 3
  • the UE autonomous resource selection mode UE autonomous resource selection mode, or mode 4
  • a resource for transmitting control information and data is selected, and thus the terminal selects the control information and data.
  • Embodiment 3 unlike Embodiments 1 and 2 described above, in V2X, when SA and TB-associated data are allowed to be transmitted in different subframes (that is, V2X control information and data transmission time resources) In the case of the second type of configuration), it is assumed that only one transmission is performed without retransmission of the data in TB units. That is, it is considered that SA and TB-associated data are transmitted in different subframes only when one transmission is sufficient without retransmission of the TB-based data.
  • the first field (eg, "Time gap between transmission and retransmission") may be interpreted as follows.
  • the first field (eg, “Time gap between transmission and retransmission ”) may indicate a gap between a subframe in which data in TB units associated with an SA is initially transmitted and a subframe in which data in TB units associated with the SA are retransmitted.
  • the first field (eg, “Time gap between transmission and retransmission”) may be configured with a 4-bit size.
  • the first field (for example, “Time gap between transmission and retransmission” is a subframe used for transmission of the SA (eg, subframe X or TTI m + c) and a subframe used for transmission of data in TB units associated with the SA ( For example, an interval between subframes W or TTI m + d) may be indicated.
  • the first field (eg, “Time gap between transmission and retransmission”) may be configured with a 4-bit size.
  • a subframe (eg, subframe X or TTI m + c) in which an SA is transmitted is selected from a base station (eNodeB) as a DCI.
  • Subframe information on a resource block which is a frequency axis resource used for transmission of an SA in a subframe in which the SA is transmitted (for example, subframe X or TTI m + c) is transmitted through DCI. Can be indicated.
  • the information on the resource block which is a frequency axis resource used for transmission of the SA included in the DCI is indicated by the "CIF" and "Lowest index of sub-channel allocation" signaling fields. It may include.
  • the DCI includes information related to Sidelink Control Information (SCI) included in SA as information necessary for the UE to transmit data in V2X communication.
  • SCI Sidelink Control Information
  • the DCI is transmitted from the base station to the terminal.
  • the content related to the SCI included in the DCI and indicated by the first field eg, "Time gap between transmission and retransmission" and the second field (eg, "Frequency resource of initial and last transmission ").
  • a SA pool includes a subframe (eg, subframe X or TTI m + c) in which the UE transmits the SA itself by sensing.
  • a subframe pool for SA is determined, and is a frequency axis resource used for transmission of an SA in a subframe in which the SA is transmitted (for example, subframe X or TTI m + c).
  • the resource block is also determined by the UE itself in an SA pool (specifically, a resource block pool for SA).
  • the DCI is not received (ie, the "CIF” and "Lowest index of sub-channel allocation” signaling fields through the DCI). Rather than the terminal itself.
  • the UE autonomous resource selection mode (or mode 4) content related to SCI (Sidelink Control Information) included in SA as information required for the UE to transmit data in V2X communication is also used by the UE itself. Will decide. Accordingly, unlike the base station resource scheduling mode (eNodeB resource scheduling mode, or mode 3), the DCI is not received (ie, the first field (eg, "Time gap between transmission and retransmission") and the second field (eg, For example, rather than receiving "Frequency resource of initial and last transmission" through DCI), the UE determines itself.
  • the first field eg, "Time gap between transmission and retransmission”
  • the second field eg, For example, rather than receiving "Frequency resource of initial and last transmission” through DCI
  • SCI Servicelink Control Information
  • eNodeB resource scheduling mode or mode 3
  • UE autonomous resource selection mode UE
  • autonomous resource selection mode 4 there is a difference that the UE selects itself.
  • a terminal (receiving terminal) receiving data transmits data.
  • the SCI included in the SA is required, so the terminal transmitting the data (transmitting terminal) must transmit the SA including the SCI to the terminal receiving the data (receiving terminal). do.
  • Information on a resource block which is a frequency axis resource used for transmission of an SA indicated by being included in the DCI in an eNodeB resource scheduling mode (or mode 3), is defined as "CIF” and "Lowest index of.” sub-channel allocation "signaling field.
  • the "CIF” signaling field indicated by a 3-bit value indicates a carrier or band used for V2X.
  • the "Lowest index of sub-channel allocation” signaling field is a carrier used for the V2X in a subframe (eg, subframe X or TTI m + c) that transmits an SA, or It indicates which resource block (band) to use for SA transmission.
  • the "Lowest index of sub-channel allocation" signaling field is used for transmission of data associated with the SA among a total of K sub-channels having indices from 0 to K-1.
  • the sub-channel having the lowest index among the sub-channels may be indicated. This requires bits of ceil (log2 (K)), so if the maximum possible number of sub-channels is 20, minimum 0 bits and maximum 5 bits are required.
  • the PSCCH for transmitting SA may be allocated in the RB having the lowest RB index in the sub-channel indicated by "Lowest index of sub-channel allocation".
  • the sub-channels may be configured identically in an SA transmission subframe and a data transmission subframe.
  • the PSCCH for transmitting the SA may be allocated in an RB corresponding one-to-one to a sub-channel indicated by "Lowest index of sub-channel allocation". Can be.
  • the sub-channels may be configured for a data transmission subframe, and the RBs corresponding to one-to-one to the sub-channel may be consecutive RBs.
  • the PSCCH for transmitting the SA has an allocation in the RB corresponding one-to-one to the sub-channel indicated by "Lowest index of sub-channel allocation".
  • the sub-channels may be configured for a data transmission subframe, and RBs corresponding to one-to-one to the sub-channel are indicated by higher-end signaling. It may be RBs having an interval of "PSCCH pool”.
  • an SA may be allocated to an RB having the lowest RB index in a sub-channel corresponding to the index value 3.
  • an RB corresponding to a sub-channel corresponding to index value 3 in a one-to-one manner for example, an RB index corresponding to “Starting RB of PSCCH pool” in FIG. 12.
  • S may be allocated to SA in RB) having an index value of s + 3.
  • an RB corresponding to a one-to-one corresponding to a sub-channel corresponding to the index value 3 (eg, an RB index corresponding to “Starting RB of PSCCH pool” in FIG. 13).
  • SA may be allocated in the RB) having an index value of s + 3j.
  • the terminal receiving the V2X data ie, receiving terminal, For example, in order for UE B) to decode data transmitted from a terminal (ie, a transmitting terminal, for example, UE A) transmitting V2X data, an SCI included in the SA is required. Therefore, the terminal transmitting the data (ie, the transmitting terminal, for example, UE A) must transmit the SA including the SCI to the terminal receiving the data (ie, the receiving terminal, for example, UE B).
  • a signaling field for indicating a resource used for PSSCH for transmitting data is a first field (for example, a "Time gap"). between transmission and retransmission "), and a second field (for example," Frequency resource of initial and last transmission ").
  • the first field and the second field are also included in the DCI in the base station resource scheduling mode (eNodeB resource scheduling mode, or mode 3) to transmit data from the base station (ie, a transmitting terminal, for example, UE A). Is sent to.
  • information indicated by the first field may be defined as follows.
  • a first field may include a subframe (eg, subframe X or TTI m + c) used for transmission of the SA and the SA. It may include 4-bit information indicating an interval between subframes (eg, subframe W or TTI m + d) used when transmitting the data of the associated TB unit.
  • a second field indicates which RBs are transmitted on the frequency axis in a subframe in which the TB unit data is transmitted.
  • the second field (eg, “Frequency resource of initial and last transmission”) may indicate information on the number of sub-channels used for data transmission.
  • the lowest index among the sub-channels used for this purpose is an eNodeB resource scheduling mode, or In case of mode 3), it is indicated by the "Lowest index of sub-channel allocation" signaling field included in DCI, and in case of UE autonomous resource selection mode (or mode 4), Is determined by.
  • information indicating how many sub-channels are transmitted may be included in the second field (eg, "Frequency resource of initial and last transmission").
  • 16 is a flowchart illustrating a control information and data transmission method according to the present invention.
  • control information and data mean control information and data for V2X communication or direct link (eg, D2D, ProSe, or SL) communication, respectively.
  • the first terminal and the second terminal corresponds to a terminal participating in V2X communication or direct link communication, the first terminal corresponds to a control information and data transmission terminal, and the second terminal corresponds to a control information and data receiving terminal.
  • the base station may indicate to the first terminal the first type or the second type for the control information and data transmission time resource configuration.
  • the first type of control information and data transmission time resource setting may be a case where control information (eg, SA) and its associated data (eg, data in TB units) are always transmitted in the same subframe. Can be directed.
  • the second type of control information and data transmission time resource setting may include that control information (eg, SA) and its associated data (eg, data in TB) may be transmitted in another subframe or in the same subframe. It may indicate when it may be.
  • the first terminal may determine whether the base station resource scheduling mode (eNodeB resource scheduling mode) or the UE autonomous resource selection mode (UE autonomous resource selection mode).
  • the operation mode for the resource allocation method for the control information and data transmission may be directly set by the base station for the terminal, or the terminal may determine itself according to the presence or absence of scheduling information from the base station.
  • step S1625 the first terminal may attempt to receive the DCI transmitted from the base station.
  • This DCI includes various information, among which a first field related to control information and a data transmission resource (eg, "Time gap between transmission and retransmission") and a second field (eg, "Frequency resource of initial" and last transmission ").
  • the first terminal may determine what information corresponds to the first field and the second field included in the DCI received in operation S1625.
  • the first terminal is based on what type is indicated in step S1610 (that is, whether the control information and data are the first type transmitted in the same subframe, or the subframe is different from the control information and data).
  • the first field eg "Time gap between transmission and retransmission" included in the DCI and the second field (eg "Frequency resource of initial") and last transmission ").
  • the interpretation of the first field and the second field according to the first type or the second type is the same as described in the above-described various embodiments of the present invention, and thus redundant description thereof will be omitted.
  • the process proceeds to step S1630, the first terminal is a first field (for example, "Time gap between transmission and retransmission") and the second field (for example, Information corresponding to "Frequency resource of initial and last transmission" may be determined by itself.
  • the first terminal expresses a resource to which control information and data are to be transmitted in consideration of a channel occupancy situation in a sensing window of a predetermined section based on a time point when TB to be transmitted to the second terminal occurs.
  • Information corresponding to the field and the second field may be determined.
  • the first terminal transmits in a subframe different from each other based on what type is indicated in step S1610 (that is, the first type in which control information and data are transmitted in the same subframe, or in which the control information and data are different from each other). In consideration of whether it is the second type that allows the information to be determined), information corresponding to the first field and the second field may be determined.
  • the first terminal may determine control information and resources for data transmission based on the information corresponding to the first field and the second field determined in operation S1630.
  • the first terminal may map the control information and data to the control information and the data transmission resource determined in step S1640 and transmit to the second terminal in steps S1650 and S1660.
  • step S1650 the first terminal controls information (eg, "Time gap between transmission and retransmission") and a second field (for example, "Frequency resource of initial and last transmission") For example, SCI or SA) may be transmitted to the second terminal.
  • information eg, "Time gap between transmission and retransmission”
  • a second field for example, "Frequency resource of initial and last transmission”
  • SCI or SA may be transmitted to the second terminal.
  • the first terminal may transmit data on the resource indicated by the control information transmitted in operation S1650.
  • the second terminal may attempt to receive control information from the first terminal in a blind decoding manner.
  • the blind decoding scheme includes monitoring candidate resource locations from which control information can be received. Also, the second terminal may determine a resource to which data is to be received based on the information (for example, the first field and the second field) included in the control information received from the first terminal, and accordingly, the first terminal Decoding may be attempted on the data transmitted from the.
  • step may further include other steps, may include other steps except some, or may include additional other steps except some.
  • various embodiments of the present disclosure may be implemented by hardware, firmware, software, or a combination thereof.
  • one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), General Purpose It may be implemented by a general processor, a controller, a microcontroller, a microprocessor, and the like.
  • scope of the disclosure include software or machine-executable instructions (eg, an operating system, an application, firmware, a program, etc.) to cause an operation in accordance with various embodiments of the method to be executed on an apparatus or a computer, and such software or Instructions, and the like, including non-transitory computer-readable media that are stored and executable on a device or computer.
  • software or machine-executable instructions eg, an operating system, an application, firmware, a program, etc.
  • 17 is a view for explaining the configuration of a wireless device according to the present invention.
  • a terminal device 100 transmitting control information and data for V2X communication or direct link (eg, D2D, ProSe, or SL) communication to another terminal device, and V2X communication or direct link (eg, FIG. 2 illustrates a base station apparatus 200 that provides control information supporting D2D, ProSe, or SL) communication to the terminal apparatus 100.
  • V2X communication or direct link eg, D2D, ProSe, or SL
  • the terminal device 100 may include a processor 110, an antenna unit 120, a transceiver 130, and a memory 140.
  • the processor 110 performs baseband related signal processing and may include an upper layer processor 111 and a physical layer processor 112.
  • the upper layer processor 111 may process operations of a medium access control (MAC) layer, a radio resource control (RRC) layer, or more upper layers.
  • the physical layer processor 112 may process operations (eg, uplink transmission signal processing and downlink reception signal processing) of a physical (PHY) layer.
  • the processor 110 may also control operations of the entire terminal device 100.
  • the antenna unit 120 may include one or more physical antennas, and may include multiple input multiple output (MIMO) transmission and reception when a plurality of antennas are included.
  • the transceiver 130 may include a radio frequency (RF) transmitter and an RF receiver.
  • the memory 140 may store computationally processed information of the processor 110, software related to an operation of the terminal device 100, an operating system, an application, and the like, and may include components such as a buffer.
  • the base station apparatus 200 may include a processor 210, an antenna unit 220, a transceiver 230, and a memory 240.
  • the processor 210 performs baseband-related signal processing and may include an upper layer processor 211 and a physical layer processor 212.
  • the higher layer processor 211 may process operations of the MAC layer, the RRC layer, or more higher layers.
  • the physical layer processor 212 may process an operation of the PHY layer (for example, downlink transmission signal processing and uplink reception signal processing).
  • the processor 210 may control the overall operation of the base station apparatus 200.
  • the antenna unit 220 may include one or more physical antennas, and may support MIMO transmission / reception if the antenna unit includes a plurality of antennas.
  • the transceiver 230 may include an RF transmitter and an RF receiver.
  • the memory 240 may store computationally processed information of the processor 210, software related to the operation of the base station apparatus 200, an operating system, an application, and the like, and may include components such as a buffer.
  • the processor 110 of the terminal device 100 may be set to implement the terminal operation in the embodiments described in the present invention.
  • the upper layer processor 111 of the processor 110 of the terminal device 100 may include a type determiner 1710 of control information (eg, SA) and data transmission time resource setting.
  • the type determiner 1710 may include a first type indicated by the base station apparatus 200 (ie, a type in which control information and associated data are transmitted in the same time resource) or a second type (ie, control information and associated data). Which type is allowed to be transmitted in another time resource).
  • the upper layer processor 111 of the processor 110 of the terminal device 100 may include a resource scheduling / selection mode determiner 1720.
  • the mode determiner 1720 may determine whether resources for V2X communication or direct link communication are scheduled by the base station (ie, base station resource scheduling mode), or whether the terminal selects itself (ie, terminal autonomous resource selection mode). .
  • the operation mode for the resource allocation method for the control information and data transmission may be directly set by the base station for the terminal, or the terminal may determine itself according to the presence or absence of scheduling information from the base station.
  • the upper layer processor 111 of the processor 110 of the terminal device 100 may include a control information configuration unit 1730.
  • the control information configuration unit 1730 may operate based on the mode determined by the mode determination unit 1720. For example, when the mode determiner 1720 determines the base station resource scheduling mode, information included in the DCI received from the base station apparatus 200 through the physical layer processing unit 112 (for example, the first field). (Eg, "Time gap between transmission and retransmission") and a second field (eg, "Frequency resource of initial and last transmission"), the terminal device 100 is another terminal device (not shown). Control information to be transmitted can be configured. Alternatively, when the mode determiner 1720 determines that the terminal is an autonomous resource selection mode, the terminal device 100 may determine control information (eg, a first field (eg, “Time gap between transmission”) based on sensing or the like. and retransmission ”) and a second field (eg," Frequency resource of initial and last transmission ").
  • a first field eg, “Time gap between transmission”
  • a second field eg, Frequency resource of initial and last transmission
  • the control information configuring unit 1730 may operate based on the type determined by the type determination unit 1710. For example, when the type determiner 1720 determines the first type (ie, the type in which the control information and the data associated with the same are transmitted in the same time resource), and the second type (ie, the control information and the associated data) In the case of determining as a type that allows transmission in different time resources, the control information (e.g., a first field (e.g., "Time gap between transmission and retransmission") and a second field (e.g., For example, the interpretation or configuration of "Frequency resource of initial and last transmission”) may be applied differently.
  • a first field e.g., "Time gap between transmission and retransmission”
  • a second field e.g., For example, the interpretation or configuration of "Frequency resource of initial and last transmission
  • the physical layer processing unit 112 of the processor 110 of the terminal device 100 receives information such as DCI received from the base station apparatus 200 and transmits the information to the upper layer processing unit 111 or transmits control information and data to another layer. It may transmit to a terminal device (not shown).
  • the processor 210 of the base station apparatus 200 may be configured to implement the base station operation in the embodiments described in the present invention.
  • the upper layer processor 211 of the processor 210 of the base station apparatus 200 may include a type determiner 1750 of control information (eg, SA) and data transmission time resource setting.
  • the type determiner 1750 may be configured to have a first type (that is, a type in which control information and associated data are transmitted in the same time resource) or a second type (ie, control information and associated data) different from each other. It is possible to determine which type (type that allows transmission on the time resource) is set, and transmit information indicating the determined type to the terminal device 100 through the physical layer processing unit 212.
  • the upper layer processor 211 of the processor 210 of the base station apparatus 200 may include a resource scheduling / selection mode determiner 1760.
  • the mode determiner 1760 may determine whether resources for V2X communication or direct link communication are scheduled by the base station (ie, base station resource scheduling mode), or whether the terminal selects itself (ie, terminal autonomous resource selection mode). . If the mode is scheduled by the base station, the base station apparatus 200 transmits downlink control information (DCI) to the terminal apparatus 100.
  • DCI downlink control information
  • the upper layer processor 211 of the processor 210 of the base station apparatus 200 may include a downlink control information configuration unit 1770.
  • the downlink control information configuring unit 1770 is necessary for the terminal device 100 to transmit control information and data to another terminal device (not shown).
  • Determine and include information eg, a first field (eg, "Time gap between transmission and retransmission" and a second field (eg, "Frequency resource of initial and last transmission")
  • Information such as DCI may be transmitted to the terminal device 100 through the physical layer processing unit 212.
  • the base station apparatus 200 may not configure downlink control information.
  • the downlink control information configuration unit 1770 may operate based on the type determined by the type determination unit 1750. For example, when the type determiner 1750 determines that the first type (that is, the type in which the control information and the data associated with the same are transmitted in the same time resource) and the second type (that is, the control information and the associated data) In the case of determining as a type that allows transmission in different time resources, the control information (e.g., a first field (e.g., "Time gap between transmission and retransmission") and a second field (e.g., For example, the configuration of "Frequency resource of initial and last transmission”)) may be applied differently.
  • a first field e.g., "Time gap between transmission and retransmission”
  • a second field e.g., For example, the configuration of "Frequency resource of initial and last transmission

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Abstract

L'invention concerne un procédé et un appareil permettant de transmettre des informations de commande et des données de V2X. Selon un mode de réalisation de la présente invention, un procédé de transmission d'informations de commande et de données pour un premier terminal peut comprendre les étapes consistant : à déterminer des types de ressources de temps de transmission pour les informations de commande et les données; à déterminer un mode de planification de ressource de station de base ou un mode de sélection de ressource autonome de terminal; à générer, sur la base des types déterminés et du mode déterminé, les informations de commande comprenant des informations sur la ressource de temps de transmission pour les données à transmettre du premier terminal à un second terminal; et à transmettre les informations de commande et les données au second terminal.
PCT/KR2017/010980 2016-09-30 2017-09-29 Procédé et appareil permettant de transmettre des informations de commande et des données de v2x WO2018062948A1 (fr)

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