Patent Description:
In conventional cellular networks, all communication needs to be forwarded via base stations. By contrast, D2D communication (device-to-device communication) refers to a technique in which two user equipment units directly communicate with each other without needing a base station or a core network to perform forwarding therebetween. A research project on the use of LTE equipment to implement proximity D2D communication services was approved at the 3rd Generation Partnership Project (3GPP) RAN#<NUM> plenary meeting in March <NUM> (see Non-Patent Document <NUM>). Functions introduced in the LTE Release <NUM> D2D include:.

A research project on enhanced LTE eD2D (enhanced D2D) was approved at the 3GPP RAN#<NUM> plenary meeting in December <NUM> (see Non-Patent Document <NUM>). Main functions introduced in the LTE Release <NUM> eD2D include:.

Based on the design of the D2D communication mechanism, a V2X feasibility research project based on D2D communication was approved at the 3GPP RAN#<NUM> plenary meeting in June <NUM>. V2X stands for Vehicle to Everything, and is used to implement information exchange between a vehicle and all entities that may affect the vehicle, for the purpose of reducing accidents, alleviating traffic congestion, reducing environmental pollution, and providing other information services. Application scenarios of V2X mainly include four aspects:.

3GPP divides the research and standardization of V2X into three stages. The first stage was completed in September <NUM>, and mainly focused on V2V and was based on LTE Release <NUM> and Release <NUM> D2D (also known as sidelink communication), that is, the development of proximity communication technologies (see Non-Patent Document <NUM>). V2X stage <NUM> introduced a new D2D communication interface referred to as PC5 interface. The PC5 interface is mainly used to address the issue of cellular Internet of Vehicle (IoV) communication in high-speed (up to <NUM>/h) and high-node density environments. Vehicles can exchange information such as position, speed, and direction through the PC5 interface, that is, the vehicles can communicate directly through the PC5 interface. Compared with the proximity communication between D2D devices, functions introduced in LTE Release <NUM> V2X mainly include:.

The second stage of the V2X research project belonged to the LTE Release <NUM> research category (see Non-Patent Document <NUM>). Main features introduced included high-order 64QAM modulation, V2X carrier aggregation, short TTI transmission, as well as feasibility study of transmit diversity.

The corresponding third stage, V2X feasibility research project based on <NUM> NR network technologies (see Non-Patent Document <NUM>), was approved at the 3GPP RAN#<NUM> plenary meeting in June <NUM>.

At the 3GPP RAN1#<NUM> meeting in August <NUM> (see Non-Patent Document <NUM>), the following meeting conclusions were reached regarding resource reservation and indication of Transmission Mode <NUM> in NR sidelink:.

At the 3GPP RAN1#98bis meeting in October <NUM> (see Non-Patent Document <NUM>), the following meeting conclusions were reached regarding the above maximum number of sidelink resources reserved for one sidelink transmission:.

The scheme of the present invention mainly includes a method in which NR sidelink user equipment determines a value of a time domain resource assignment indication field in sidelink control information (SCI).

In order to address at least part of the aforementioned issues, the present invention provides a method performed by user equipment, and user equipment.

The method performed by user equipment according to a first aspect of the present invention comprises: receiving sidelink scheduling information; determining the number N of sidelink time-frequency resources; and determining a value of a time domain resource assignment indication field in sidelink control information (SCI), wherein the sidelink control information (SCI) is transmitted on an i-th (<NUM> ≤ i ≤ N) sidelink time-frequency resource, and the value of the time domain resource assignment indication field in the SCI indicates N - i + <NUM> sidelink time-frequency resource(s).

According to the method performed by user equipment according to the first aspect of the present invention, the sidelink scheduling information is transmitted via downlink control information (DCI) transmitted by a base station; or, the sidelink scheduling information is a sidelink configured grant configured via a radio resource control (RRC) information element.

According to the method performed by user equipment according to the first aspect of the present invention, the sidelink scheduling information comprises a time domain resource assignment indication field; the number N of sidelink time-frequency resources is determined according to the time domain resource assignment indication field.

User equipment according to a second aspect of the present invention comprises: a processor; and a memory storing instructions, wherein the instructions, when run by the processor, perform the method according to the first aspect.

The above and other features of the present invention will be more apparent from the following detailed description in combination with the accompanying drawings, in which:.

The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments. It should be noted that the present invention should not be limited to the specific embodiments described below. In addition, detailed descriptions of well-known technologies not directly related to the present invention are omitted for the sake of brevity, in order to avoid obscuring the understanding of the present invention.

In the following description, a <NUM> mobile communication system and its later evolved versions are used as exemplary application environments to set forth a plurality of embodiments according to the present invention in detail. However, it is to be noted that the present invention is not limited to the following implementations, but is applicable to many other wireless communication systems, such as a communication system after <NUM> and a <NUM> mobile communication system before <NUM>.

Some terms involved in the present invention are described below. Unless otherwise specified, the terms used in the present invention adopt the definitions herein. The terms given in the present invention may vary in LTE, LTE-Advanced, LTE-Advanced Pro, NR, and subsequent communication systems, but unified terms are used in the present invention. When applied to a specific system, the terms may be replaced with terms used in the corresponding system.

The following is a description of the prior art associated with the solution of the present invention. Unless otherwise specified, the same terms in the specific embodiments have the same meanings as in the prior art.

It is worth pointing out that the V2X and sidelink mentioned in the description of the present invention have the same meaning. The V2X herein can also mean sidelink; similarly, the sidelink herein can also mean V2X, and no specific distinction and limitation will be made in the following text.

The resource allocation mode of V2X (sidelink) communication and the transmission mode of V2X (sidelink) communication in the description of the present invention can be replaced equivalently with each other. The resource allocation mode involved in the description can mean transmission mode, and the transmission mode involved can mean resource allocation mode. In NR sidelink, Transmission Mode <NUM> represents a base station scheduling-based transmission mode (resource allocation mode), and Transmission Mode <NUM> represents a user equipment sensing-based and resource selection-based transmission mode (resource allocation mode).

The PSCCH in the description of the present invention is used to carry SCI. The PSSCH associated with or relevant to or corresponding to or scheduled by PSCCH involved in the description of the present invention has the same meaning, and all refer to an associated PSSCH or a corresponding PSSCH. Similarly, the SCI (including first stage SCI and second stage SCI) associated with or relevant to or corresponding to the PSSCH involved in the description has the same meaning, and all refer to associated SCI or corresponding SCI. It is worth pointing out that the first stage SCI, referred to as 1st stage SCI or SCI format <NUM>-<NUM>, is transmitted in the PSCCH; and the second stage SCI, referred to as 2nd stage SCI or SCI format <NUM>-<NUM>, is transmitted on resources of the corresponding PSSCH. <MAT> in the description of the present invention represents performing an adding operation on f(<NUM>),f(<NUM>),. , f(m - <NUM>).

In the description of the present invention, the sidelink scheduling information transmitted by the base station indicates that the number of sidelink time-frequency resources is N. On the i-th (<NUM> ≤ i ≤ N) sidelink resource, if the user equipment transmits a PSCCH and a corresponding PSSCH, then a corresponding indication field in SCI, such as the time domain resource assignment indication field in SCI format <NUM>-<NUM>, is set according to the method of the present patent. It is worth pointing out that on a certain sidelink resource indicated by a base station, the user equipment may also not transmit a PSCCH and a corresponding PSSCH, and the present invention does not set any limitations thereon.

From the perspective of a UE side, the UE has only two scenarios, out-of-coverage and in-coverage. Partial-coverage is described from the perspective of sidelink communication.

<FIG> is a schematic diagram showing sidelink communication of LTE V2X UE. First, UE1 transmits to UE2 sidelink control information (SCI format <NUM>), which is carried by a physical layer channel PSCCH. SCI format <NUM> includes scheduling information of a PSSCH, such as frequency domain resources and the like of the PSSCH. Secondly, UE1 transmits to UE2 sidelink data, which is carried by the physical layer channel PSSCH. The PSCCH and the corresponding PSSCH are frequency division multiplexed, that is, the PSCCH and the corresponding PSSCH are located in the same subframe in the time domain but are located on different RBs in the frequency domain. Specific design methods of the PSCCH and the PSSCH are as follows:.

<FIG> shows two resource allocation modes of LTE V2X, which are referred to as base station scheduling-based resource allocation (Transmission Mode <NUM>) and UE sensing-based resource allocation (Transmission Mode <NUM>), respectively. In NR sidelink, Transmission Mode <NUM> of LTE V2X corresponds to Transmission Mode <NUM> in NR V2X, and is a base station scheduling-based transmission mode, and Transmission Mode <NUM> of LTE V2X corresponds to Transmission Mode <NUM> in NR V2X, and is a UE sensing-based transmission mode. In LTE V2X, when there is eNB network coverage, a base station can configure, through UE-level dedicated RRC signaling SL-V2X-ConfigDedicated, a resource allocation mode of UE, or referred to as a transmission mode of the UE, which is specifically as follows:.

In sidelink communication, resources transmitted and received by UEs all belong to resource pools. For example, for a base station scheduling-based transmission mode in sidelink communication, the base station schedules transmission resources for sidelink UE in the resource pool; alternatively, for a UE sensing-based transmission mode in sidelink communication, the UE determines a transmission resource from the resource pool.

A numerology comprises two aspects: a subcarrier spacing and a cyclic prefix (CP) length. NR supports five subcarrier spacings, which are respectively <NUM>, <NUM>, <NUM>, <NUM> and <NUM> (corresponding to µ=<NUM>, <NUM>, <NUM>, <NUM>, <NUM>). Table <NUM>-<NUM> shows the supported transmission numerologies specifically as follows:.

Only when µ = <NUM>, that is, in the case of a <NUM> subcarrier spacing, an extended CP is supported, whereas only a normal CP is supported in the case of other subcarrier spacings. For a normal CP, each slot includes <NUM> OFDM symbols; for an extended CP, each slot includes <NUM> OFDM symbols. For µ = <NUM>, that is, a <NUM> subcarrier spacing, one slot = <NUM>; for µ = <NUM>, namely, a <NUM> subcarrier spacing, one slot = <NUM>; for µ = <NUM>, namely, a <NUM> subcarrier spacing, one slot = <NUM>, and so on.

NR and LTE have the same definition for a subframe, which denotes <NUM>. For a subcarrier spacing configuration µ, a slot number in one subframe (<NUM>) may be expressed as <MAT>, and ranges from <NUM> to <MAT>. A slot number in one system frame (a duration of <NUM>) may be expressed as <MAT>, and ranges from <NUM> to <MAT>. The definitions of <MAT> and <MAT> in different cases of subcarrier spacings µ are shown in the tables below.

On an NR carrier, a system frame (or simply referred to as frame) number (SFN) ranges from <NUM> to <NUM>. The concept of a direct system frame number DFN is introduced to sidelink communication, and the number likewise ranges from <NUM> to <NUM>. The above description of the relationship between the system frame and the numerology can also be applied to a direct system frame. For example, a duration of one direct system frame is likewise equal to <NUM>; for a <NUM> subcarrier spacing, one direct system frame includes <NUM> slots, and so on. The DFN is applied to timing on a sidelink carrier.

The LTE only supports a <NUM> subcarrier spacing. Both the extended CP and the normal CP are supported in the LTE. The subframe has a duration of <NUM> and includes two slots. Each slot has a duration of <NUM>.

For a normal CP, each subframe includes <NUM> OFDM symbols, and each slot in the subframe includes <NUM> OFDM symbols; for an extended CP, each subframe includes <NUM> OFDM symbols, and each slot in the subframe includes <NUM> OFDM symbols.

The resource block (RB) is defined in the frequency domain as <MAT> consecutive subcarriers. For example, for a <NUM> subcarrier spacing, the RB is <NUM> in the frequency domain. For a <NUM> × <NUM>µ subcarrier spacing, the resource element (RE) represents one subcarrier in the frequency domain and one OFDM symbol in the time domain.

In the description of the present patent, the maximum number of sidelink resources reserved for one sidelink transmission represents the maximum number (expressed as Nmax) of sidelink resources indicated in a current sidelink transmission, and the maximum number of sidelink resources includes current sidelink resources. For example, Nmax = <NUM>. In a certain sidelink transmission, up to two additional sidelink time-frequency resources may be indicated by SCI. That is, one additional sidelink time-frequency resource or two additional sidelink time-frequency resources, or no additional sidelink time-frequency resource are indicated in the SCI. With respect to Nmax, the following description is further provided:.

In NR sidelink, DCI format 3_0 is used to schedule a PSCCH and a PSSCH, and is for Transmission Mode <NUM>. SCI format <NUM>-<NUM> is used to schedule a PSSCH and second stage SCI carried on the PSSCH. DCI format 3_0 and SCI format <NUM>-<NUM> both include a time domain resource indication field. In addition, an interpretation mode of the time domain resource indication field in DCI format 3_0 and an interpretation mode of the time domain resource indication field in SCI format <NUM>-<NUM> are the same, as shown below (a value of the time domain resource indication field is expressed as TRIV):
<IMG>.

The interpretation mode of the above time domain resource indication field is one to one mapping. That is, when user equipment receives DCI format 3_0 or SCI format <NUM>-<NUM>, only one T<NUM> (equivalent to determining that N= <NUM>) or only one group (T<NUM>, T<NUM>) (equivalent to determining that N = <NUM>), or N = <NUM> (indicating that no additional sidelink resource indication is present, and only the current resource indication is included) can be determined according to the value TRIV of the time domain resource indication field in combination with the above calculation and mapping relationships between TRIV and T<NUM> and between TRIV and T<NUM>. It is worth pointing out that, for N = <NUM>, TRIV= <NUM>; for N = <NUM>, <NUM> ≤ TRIV ≤ <NUM>; and for N = <NUM>, TRIV > <NUM>.

For NR sidelink, similar to LTE V2X, frequency domain resource assignment is performed in units of sub-channel. One sub-channel includes multiple RBs, and frequency domain resource assignment is performed in an integer number of sub-channels.

DCI format 3_0 and SCI format <NUM>-<NUM> both include a frequency domain resource indication field. In addition, an interpretation mode of the frequency domain resource indication field in DCI format 3_0 and an interpretation mode of the frequency domain resource indication field in SCI format <NUM>-<NUM> are the same, as shown below (a value of the frequency domain resource indication field is expressed as r):
<IMG>
wherein.

After the user equipment determines the value of Nmax, the UE may determine only one group of f<NUM> and m or only one group of f<NUM>, f<NUM> and m according to the value r of the frequency domain resource indication field in received DCI format 3_0 or SCI format <NUM>-<NUM> in combination with the above calculation mode for determining r.

The difference between frequency domain resource assignment (FDRA) and time domain resource assignment (TDRA) in NR sidelink mainly includes the following two points:.

Hereinafter, specific examples and embodiments related to the present invention are described in detail. In addition, as described above, the examples and embodiments described in the present disclosure are illustrative descriptions for facilitating understanding of the present invention, rather than limiting the present invention.

<FIG> is a schematic diagram showing a basic procedure of a method performed by user equipment according to Embodiment <NUM> of the present invention.

The method performed by user equipment according to Embodiment <NUM> of the present invention is described in detail below in conjunction with the basic procedure diagram shown in <FIG>.

As shown in <FIG>, in Embodiment <NUM> of the present invention, the steps performed by the user equipment include the following:
In step S101, sidelink user equipment receives sidelink scheduling information transmitted by a base station.

Optionally, the sidelink scheduling information is DCI format 3_0 including a time domain resource assignment indication field.

Or,
optionally, the sidelink scheduling information is RRC signaling (or an RRC information element) including time domain resource assignment indication information. The RRC signaling (or the RRC information element) is expressed as SL-ConfiguredGrantConfig.

In step S102, the sidelink user equipment determines the number N of sidelink resources indicated by the sidelink scheduling information.

Optionally, the user equipment determines N according to a value TRIV of the time domain resource assignment indication field, or,
optionally, the user equipment determines N according to a value TRIV of the time domain resource assignment indication information.

In step S103, the sidelink user equipment determines time domain resource interval indication information T<NUM> and/or T<NUM>.

Optionally, the user equipment determines T<NUM> and/or T<NUM> according to the value TRIV of the time domain resource assignment indication field, or,
optionally, the user equipment determines T<NUM> and/or T<NUM> according to the value TRIV of the time domain resource assignment indication information.

In step S104, the user equipment determines a value TRIV' of a time domain resource indication field in an SCI format <NUM>-<NUM>.

Optionally, if N = <NUM>, then the user equipment sets the value TRIV' of the time domain resource indication field in the SCI format <NUM>-<NUM> to be TRIV or <NUM>.

As shown in <FIG>, in Embodiment <NUM> of the present invention, the steps performed by the user equipment include the following:
In step S201, sidelink user equipment receives sidelink scheduling information transmitted by a base station.

In step S202, the sidelink user equipment determines time domain resource interval indication information T<NUM> and/or T<NUM>.

Optionally, the user equipment determines T<NUM> and/or T<NUM> according to a value TRIV of the time domain resource assignment indication field, or,
optionally, the user equipment determines T<NUM> and/or T<NUM> according to a value TRIV of the time domain resource assignment indication information.

In step S203, the user equipment determines a value TRIV' of a time domain resource indication field in an SCI format <NUM>-<NUM>.

Optionally, if TRIV = <NUM>, then the user equipment sets the value TRIV' of the time domain resource indication field in the SCI format <NUM>-<NUM> to be <NUM>.

As shown in <FIG>, in Embodiment <NUM> of the present invention, the steps performed by the user equipment include the following:
In step S301, sidelink user equipment determines the maximum number Nmax of sidelink resources reserved for one sidelink transmission.

Optionally, the user equipment determines, according to sidelink resource pool configuration information, the maximum number Nmax of sidelink resources reserved for one sidelink transmission.

In step S302, the sidelink user equipment receives sidelink scheduling information transmitted by a base station.

Optionally, the sidelink scheduling information is DCI format 3_0 including a frequency domain resource assignment indication field and a time domain resource assignment indication field.

Or,
optionally, the sidelink scheduling information is RRC signaling (or an RRC information element) including frequency domain resource assignment indication information and time domain resource assignment indication information. The RRC signaling (or the RRC information element) is expressed as SL-ConfiguredGrantConfig.

In step S303, the sidelink user equipment determines an index (or number) f<NUM> of a lowest sub-channel of a second sidelink resource, and the number m of sub-channels in sidelink frequency domain resource assignment, and/or an index f<NUM> of a lowest sub-channel of a third sidelink resource.

Optionally, the user equipment determines f<NUM> and m and/or f<NUM> according to a value r of the frequency domain resource assignment indication field, or,
optionally, the user equipment determines f<NUM> and m and/or f<NUM> according to a value r of the frequency domain resource assignment indication information.

In step S304, the sidelink user equipment determines the number N of sidelink resources indicated by the sidelink scheduling information.

In step S305, the user equipment determines a value r' of a frequency domain resource indication field in an SCI format <NUM>-<NUM>.

Optionally, if N = <NUM>, then the user equipment sets the value r' of the frequency domain resource indication field in the SCI format <NUM>-<NUM> to be equal to r.

As shown in <FIG>, in Embodiment <NUM> of the present invention, the steps performed by the user equipment include the following:
In step S401, sidelink user equipment determines the maximum number Nmax of sidelink resources reserved for one sidelink transmission.

In step S402, the sidelink user equipment receives sidelink scheduling information transmitted by a base station.

In step S403, the sidelink user equipment determines an index (or number) f<NUM> of a lowest sub-channel of a second sidelink resource, and the number m of sub-channels in sidelink frequency domain resource assignment, and/or an index f<NUM> of a lowest sub-channel of a third sidelink resource.

In step S404, the user equipment determines a value r' of a frequency domain resource indication field in an SCI format <NUM>-<NUM>.

Optionally, if a value TRIV of the time domain resource assignment indication field or indication information is equal to <NUM>, then the user equipment sets the value r' of the frequency domain resource indication field in the SCI format <NUM>-<NUM> to be equal to r.

Optionally, if the value TRIV of the time domain resource assignment indication field or indication information satisfies <NUM> ≤ TRIV ≤ <NUM>,.

Optionally, if the value TRIV of the time domain resource assignment indication field or indication information satisfies TRIV> <NUM>,.

As shown in <FIG>, in Embodiment <NUM> of the present invention, steps performed by the user equipment include the following steps.

In step S501, sidelink user equipment determines the maximum number Nmax of sidelink resources reserved for one sidelink transmission.

In step S502, sidelink user equipment receives sidelink scheduling information transmitted by a base station.

Optionally, the sidelink scheduling information is DCI format 3_0 including a time domain resource assignment indication field and a frequency domain resource assignment indication field.

Or,
optionally, the sidelink scheduling information is RRC signaling (or an RRC information element) including time domain resource assignment indication information and frequency domain resource assignment indication information. The RRC signaling (or the RRC information element) is expressed as SL-ConfiguredGrantConfig.

Optionally, in step S503 (step S503 is an optional step), the sidelink user equipment determines the number N of sidelink time-frequency resources indicated by the sidelink scheduling information.

In step S504, the user equipment determines a time domain resource indication field and/or a frequency domain resource indication field in an SCI format <NUM>-<NUM>.

Optionally, the user equipment sets the time domain resource indication field and/or the frequency domain resource indication field in the SCI format <NUM>-<NUM>, such that a sidelink time-frequency resource indicated in the SCI format <NUM>-<NUM> is in accordance with a sidelink time-frequency resource indicated by the sidelink scheduling information, and/or,.

<FIG> is a block diagram showing the user equipment (UE) involved in the present invention. As shown in <FIG>, user equipment (UE) <NUM> includes a processor <NUM> and a memory <NUM>. The processor <NUM> may include, for example, a microprocessor, a microcontroller, an embedded processor, and the like. The memory <NUM> may include, for example, a volatile memory (such as a random access memory (RAM)), a hard disk drive (HDD), a non-volatile memory (such as a flash memory), or other memories. The memory <NUM> stores program instructions. The instructions, when run by the processor <NUM>, can perform the above method performed by user equipment as described in detail in the present invention.

The method and related equipment according to the present invention have been described above in combination with preferred embodiments. It should be understood by those skilled in the art that the methods shown above are only exemplary, and the above embodiments can be combined with one another as long as no contradiction arises. The method of the present invention is not limited to the steps or sequences illustrated above. The network node and user equipment illustrated above may include more modules. For example, the network node and user equipment may further include modules that can be developed or will be developed in the future to be applied to a base station, an MME, or UE, and the like. Various identifiers shown above are only exemplary, and are not meant to limit the present invention. The present invention is not limited to specific information elements serving as examples of these identifiers. A person skilled in the art could make various alterations and modifications according to the teachings of the illustrated embodiments.

It should be understood that the above-described embodiments of the present invention may be implemented by software, hardware, or a combination of software and hardware. For example, various components inside the base station and the user equipment in the above embodiments may be implemented through various devices, which include, but are not limited to, analog circuit devices, digital circuit devices, digital signal processing (DSP) circuits, programmable processors, application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs), programmable logic devices (CPLDs), and the like.

In this application, the "base station" may refer to a mobile communication data and control exchange center with large transmission power and a wide coverage area, including functions such as resource allocation and scheduling, data reception and transmission. "User equipment" may refer to a user mobile terminal, for example, including terminal devices that can communicate with a base station or a micro base station wirelessly, such as a mobile phone, a laptop computer, and the like.

In addition, the embodiments of the present invention disclosed herein may be implemented on a computer program product. More specifically, the computer program product is a product provided with a computer-readable medium having computer program logic encoded thereon. When executed on a computing device, the computer program logic provides related operations to implement the above technical solutions of the present invention. When executed on at least one processor of a computing system, the computer program logic causes the processor to perform the operations (methods) described in the embodiments of the present invention. Such setting of the present invention is typically provided as software, codes and/or other data structures provided or encoded on the computer readable medium, e.g., an optical medium (e.g., compact disc read-only memory (CD-ROM)), a flexible disk or a hard disk and the like, or other media such as firmware or micro codes on one or more read-only memory (ROM) or random access memory (RAM) or programmable read-only memory (PROM) chips, or a downloadable software image, a shared database and the like in one or more modules. Software or firmware or such configuration may be installed on a computing device such that one or more processors in the computing device perform the technical solutions described in the embodiments of the present invention.

Claim 1:
A user equipment (<NUM>), comprising:
a processor (<NUM>); and
a memory (<NUM>), storing instructions,
wherein the processor (<NUM>) executes the instructions to:
receive a sidelink scheduling information via Downlink Control Information, DCI, format 3_0, wherein a time domain resource assignment in the sidelink scheduling information indicates a number N of sidelink resource(s),
determine a value of a time domain resource assignment field for Sidelink Control Information, SCI, corresponding to ith(<NUM>≤i≤N) sidelink resource, the value of the time domain resource assignment field in the SCI indicating ith , (i+<NUM>)th, ..., Nth sidelink resource(s),
transmit a Physical Sidelink Control Channel, PSCCH, with the SCI.