Method for Resource Reservation Period in NR Sidelink Communication

Abstract

The present invention provides a method for sidelink resource reservation periodicity in supporting sidelink communications. [Solution] The method of the present invention includes a step of pre-configuring or configuring by a first node a set of possible values ​​of a resource reservation period for sidelink packet transport block (TB) transmissions, wherein the set of possible values ​​of the resource reservation period includes at least one range of possible values ​​of a predetermined resource reservation period.

Description

Technical Field

[0001] The present invention relates to the field of sidelink (SL) communication. In particular, the present invention relates to a method and apparatus for a sidelink resource reservation period in sidelink communication.

Background Art

[0002] In recent years, Vehicle-to-Everything (V2X) communication has attracted great attention because it is expected to play a role in the development of a safe and reliable transmission means mainly based on autonomous vehicles. V2X communication generally includes device-to-device communication such as vehicle-to-vehicle (V2V) communication, vehicle-to-road (V2I) com letter vehicle-to-pedestrian (V2P) communication, etc. V2X may include communication between a device and a network.

[0003] Device-to-device communication enables direct communication between devices without the need for communication via nodes in a network such as a base station. Devices are usually in close proximity to each other. Devices in close proximity to each other may be in a so-called in-coverage scenario within network coverage or in a so-called out-of-coverage scenario outside network coverage.

[0004] In the Long-Term Evolution (LTE) standard for wireless communication, this device-to-device communication is called sidelink communication. Sidelink communication enables direct communication between adjacent devices. Data is directly exchanged between adjacent devices.

[0005] In LTE sidelink communication, the transmission of sidelink packet transport blocks (TBs) is assumed to be periodic and highly time-deterministic. The range of periodic values supported in LTE sidelink communication is fixed to {0, 20, 50, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000} milliseconds for basic safety messages. Generally, between vehicles communicating via sidelink communication, vehicle state information such as position and speed is exchanged using basic safety messages (BSMs).

[0006] However, the evolution of LTE, also known as 5G NR (NR) tech to the art requires the evolution of V2X communication to be supported in NR. This evolution is currently being considered in the 3rd Generation Partnership Project (3GPP).

[0007] Regarding NR technology, the range of periodic values currently supported by LTE technology may not be appropriate. This is because the message periods for advanced V2X (use cases) are much smaller and the range of values that may be used can be wide.

[0008] Therefore, it is necessary to provide a method and apparatus for sidelink reservation period in sidelink communication that enhances the flexibility of the sidelink reservation period.

Summary of the Invention

Problems to be Solved by the Invention

[0009] The above problems and objectives are solved by the subject matter of the independent claims. Advantageous embodiments are defined in the dependent claims.

Means for Solving the Problems

[0010] A method for sidelink resource reservation periodicity when supporting sidelink communication according to an embodiment of the present invention includes a step of preconfiguring or configuring, by a first node, a set of possible resource reservation periodicity values for sidelink packet transport block (TB) transmission, wherein the set of possible resource reservation periodicity values includes at least one range of possible resource reservation periodicity values of a predetermined resource reservation periodicity.

[0011] A node in a network supporting sidelink communication according to another embodiment of the present invention is configured to configure a set of possible resource reservation periodicity values for sidelink packet transport block (TB) transmission, wherein the set of possible resource reservation periodicity values includes at least one range of possible resource reservation periodicity values of a predetermined resource reservation periodicity.

[0012] A user equipment (UE) performing sidelink communication according to a further embodiment of the present invention is configured to indicate a resource reservation period to another UE from a set of possible resource reservation periodicity values. 。 this A method for performing sidelink communication according to still further embodiments of the invention includes a step of a user equipment indicating a resource reservation period to another user equipment from a set of possible resource reservation periodicity values.

Advantages of the Invention

[0013] Therefore, the flexibility of the sidelink reservation period can be enhanced.

[0014] Embodiments of the present invention are presented to better understand the inventive concept of the present invention, but should not be regarded as limiting the present invention. Embodiments of the present invention will be described with reference to the following drawings.

Brief Description of the Drawings

[0015]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Modes for Carrying Out the Invention

[0016] FIG. 1 schematically shows a network architecture for sidelink communication according to an embodiment of the present invention.

[0017] The network architecture 1 for sidelink communication can support any type of cellular radio communication technology. The network architecture 1 may include at least one network node 100 and at least one user equipment (UE) 200. The radio communication technology may be LTE technology or NR technology. However, this should in no way be regarded as limiting the present invention.

[0018] FIG. 1 shows an example of a network architecture 1 including one network node 100, a first UE 200-1, and a second UE 200-2. However, it is not limited thereto, and the network architecture 1 may include one or more network nodes 100 and UEs 200. The first UE 200-1 has a transmission role and may also be called a transmitting UE. The second UE 200-2 has a reception role and may be called a receiving UE. The first UE 200-1 and the second UE 200-2 can change their transmission and reception roles. Generally, when the first UE is configured to transmit sidelink control information to the second UE having a reception role so that the second UE can perform sidelink communication, the first UE can be considered to have a transmission role. Details of the sidelink control information will be described later with reference to an embodiment of the present invention. Accordingly, when the second UE is configured to receive the sidelink control information transmitted from the first UE having a transmission role, the second UE can be considered to have a reception role. Hereinafter, in FIG. 1, it is assumed that the first UE 200-1 has a transmission role and thus is a transmitting UE, and the second UE 200-2 has a reception role and thus is a receiving UE.

[0019] The network node 100, the first UE 200-1, and the second UE 200-2 according to the embodiments of the present invention can generally be considered as devices or nodes that are compatible with wireless and / or radio wave (and / or microwave) frequency communication and / or communication using an air interface, for example, in accordance with a communication standard. The communication standard may be, but is not limited to, an LTE communication standard or an NR communication standard.

[0020] The network node 100 may be any type of network device or radio node in a wireless communication network, for example, a base station (BS), Node B, evolved Node B (eNodeB or eNB), NR Node N (gNodeB or gNB), a relay node, a micro, nano, pico, or femto node, etc.

[0021] The first UE 200-1 and the second U E2Each of 00-2 may represent a terminal device for communication using a wireless communication network and / or may be implemented as a UE according to a communication standard such as LTE or NR. Examples of UEs include telephones such as smartphones, personal communication devices, mobile phones or terminals, computers, laptops, modems, devices adapted to an air interface, particularly adapted to machine type communication (MTC), machine-to-machine communication (M2M), device-to-device communication (D2D), sensors or machines with radio capabilities, or vehicles adapted to wireless communication. The UE 200 may be mobile or stationary and, for example, be part of a road infrastructure. FIG. 1 shows a first UE 200-1 and a second UE 200-2 as vehicles adapted to wireless communication.

[0022] The network node 100 can transmit any kind of data, usually called downlink data (DL), to the first UE 200-1 via the communication link 300. The first UE 200-1 can transmit any kind of data, usually called (UL) uplink and data, to the network node 100 via the communication link 300. The communication link 300 is an air interface according to a wireless communication technology such as LTE or NR. FIG. 1 shows only the communication link 300 between the network node 100 and the first UE 200-1. Nevertheless, it should be understood that the same applies to the second UE 200-2. In other words, the communication link 300 may exist between the network node 100 and the second UE 200-2.

[0023] Furthermore, the first UE 200-1 and the second UE 200-2 can directly exchange data with each other using sidelink communication via the sidelink communication link 400. The sidelink communication link 400 may be Bluetooth, Wi-Fi, etc. The sidelink communication link 400 is a communication link that supports direct communication between the first UE 200-1 and the second UE 200-2 without requiring communication via the network node 100. In sidelink communication, the first UE 200-1 and the second UE 200-2 can operate in a D2D mode or an MTC mode, etc. The sidelink communication link may include several physical channels, for example, a physical sidelink shared channel (PSSCH) and / or a physical sidelink control channel (PSCCH), but is not limited thereto.

[0024] Figure 2 schematically shows network node 100. Figure 2 shows an exemplary structure of network node 100. In particular, Figure 2 shows an exemplary structure of the functional elements of network node 100. Network node 100 may include a processor 101, a memory 102, and a radio circuit 103. Processor 101 may be a processing circuit (which may also be referred to as a control circuit) that may include a controller connected to memory 102. Any module of network node 100, such as a communication module or a decision module, may be implemented in processing circuit 101 and / or executable by processing circuit 101, particularly as a module within the controller. Network node 100 further includes a radio circuit 103 that provides a receiving, transmitting, or transceiver function, for example, one or more transmitters and / or receivers and / or transceivers. The radio circuit is connected to or connectable to processing circuit 101. The antenna circuit (not shown) of network node 100 may be connected to or connectable to radio circuit 103 to collect or transmit and / or amplify signals. Network node 100 may be adapted to execute any method of operating network node 100 disclosed herein, and particularly may include corresponding circuits, such as processing circuits and / or modules.

[0025] Figure 3 schematically shows the first UE 200-1. Figure 3 shows an exemplary structure of the first UE 200-1. In particular, Figure 3 shows an exemplary structure of the functional elements of the first UE 200-1. The structure of the first UE 200-1 shown in Figure 3 is the same as that of the second UE 200-2. For the sake of brevity, a detailed description of the structure of the second UE 200-2 is omitted here.

[0026] The first UE 200-1 may include a processor 201 and a memory 202. The processor 201 may be a processing circuit (which may also be referred to as a control circuit) that may include a controller connected to the memory 202. Any module of the UE 200-1, such as a communication module or a decision module, may be implemented in the processing circuit 201 and / or executable by the processing circuit 201, particularly as a module within the controller. The UE 200-1 may further include a radio circuit 203 that provides a receiving, transmitting, or transceiver function, for example, one or more transmitters and / or receivers and / or transceivers. The radio circuit is connected to the processing circuit 201 or can be connected to the processing circuit 201. The antenna circuit (not shown) of the first UE 200-1 is connected to the radio circuit or can be connected to the radio circuit so as to collect or transmit and / or amplify signals. 203 The first UE 200-1 may be adapted to execute any method of operating the user equipment disclosed herein. In particular, it may include corresponding circuits, such as a processing circuit and / or a module.

[0027] According to an embodiment of the present invention, when any method described herein is particularly executed on a processing and / or control circuit, a computer program product including instructions adapted to be executed and / or controlled by the processing and / or control circuit is also conceivable. Also conceivable is the arrangement of a carrier medium that carries and / or stores the computer program product described herein.

[0028] The arrangement of the carrier medium may include one or more carrier media. Generally, the carrier medium may be accessible and / or readable and / or receivable by a processing and / or control circuit. The storage of data and / or computer program products and / or code may be regarded as part of the conveyance of the data and / or program products and / or code. The carrier medium may generally include a guiding or transport medium and / or a storage medium. The guiding or transport medium can be adapted to carry and / or store signals, in particular electromagnetic signals and / or electrical signals and / or magnetic signals and / or optical signals. The carrier medium, in particular the guiding or transport medium, can be adapted to guide and carry such signals. The carrier medium, in particular the guiding or transport medium, may include an electromagnetic field, such as radio waves or microwaves, and / or a light-transmissive material, such as glass fibers and / or cables. The storage medium may include at least one of a memory, buffer, cache, optical disk, magnetic memory, flash memory, etc., which may be volatile or non-volatile.

[0029] A method for a sidelink resource reservation period according to an embodiment of the present invention includes a step of pre-configuring or configuring, by a network node 100, a set of possible values of a resource reservation period for sidelink packet transport block (TB) transmission. FIG. 4 shows the network node 100 configuring, in step S10, a set of possible values of a resource reservation period for sidelink packet transport block (TB) transmission.

[0030] The set of possible values of the resource reservation period includes at least one range of possible values of a predetermined resource reservation period.

[0031] At least one range of possible values of the predetermined resource reservation period includes at least {0, 1:99, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000} milliseconds (ms) including. 1:99 is understood as all integers from 1 to 99.

[0032] The set of possible values of the resource reservation period may further include at least one value that can be flexibly set by the network node 100.

[0033] The method for the sidelink resource reservation period according to an embodiment of the present invention may further include a step of pre-configuring or configuring at least one sidelink resource pool by the network node 100. Hereinafter, the at least one sidelink resource pool may also be referred to as a first sidelink resource pool. Generally, a sidelink resource pool is a set of resources allocated for sidelink communication. The sidelink resource pool may include a subframe or a slot and resource blocks within the subframe or the slot.

[0034] The method for the sidelink resource reservation period according to an embodiment of the present invention may further include a step of pre-configuring or configuring at least one sidelink resource pool having at least one first set of possible values of the resource reservation period by the network node 100. In one embodiment of the present invention, at least one first set of possible values of the resource reservation period is obtained from at least one range of possible values of a predetermined resource reservation period including at least {0, 1:99, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000} ms or is a subset of at least one range of possible values of a predetermined resource reservation period.

[0035] In one embodiment of the present invention, at least one first set of possible values of the resource reservation period of the first sidelink resource pool may include a single resource reservation period value obtained from at least one range of possible values of a predetermined resource reservation period including at least {0, 1:99, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000} ms or may include a single resource reservation period value obtained from at least one range of possible values of a predetermined resource reservation period including at least {0, 1:99, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000}.

[0036] FIG. 5 shows an example of a sidelink resource pool 500. As shown in FIG. 5 sidelink In the resource pool 500, the preconfigured or network-configured resource reservation period value is 33 milliseconds. This means that the set of sidelink transmission subframes or slots 501 permitted within the resource pool, which are reserved by the UE for the transmission of sidelink TBs, is periodic with a period of 33 milliseconds between the starts of two consecutive sidelink transmission subframes or slots 501.

[0037] The method for sidelink resource reservation period according to an embodiment of the present invention may further include the step of preconfiguring or configuring, by the network node 100, one or more sidelink resource pools 500. For example, at least one additional sidelink resource pool 500 may be preconfigured, or the network node 100 may configure at least one additional sidelink resource pool 500. Hereinafter, at least one additional sidelink resource pool 500 may also be referred to as a second sidelink resource pool. The method for sidelink resource reservation period according to an embodiment of the present invention further includes the step of preconfiguring or configuring, by the network node 100, at least one second resource pool 500 having at least one second set of possible values of the resource reservation period. At least one second set of possible values of the resource reservation period is obtained from at least one range of possible values of a predetermined resource reservation period including at least {0, 1:99, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000} ms or is a subset of at least one range of possible values of a predetermined resource reservation period.

[0038] Similar to the first sidelink resource pool in an embodiment of the present invention, at least one second set of possible values of the resource reservation period of the second sidelink resource pool is at least {0, 1:99, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000} msIt may include a single resource reservation period value obtained from at least one range of possible values of a predetermined resource reservation period including.

[0039] In some embodiments of the present invention, at least one second set of possible values of the resource reservation period is different from at least one first set of possible values of the resource reservation period. In other words, at least one resource reservation period value in at least one second set of possible values of the resource reservation period is different from at least one resource reservation period value in at least one first set of possible values of the resource reservation period.

[0040] As described in detail above, according to an embodiment of the present invention, the network node 100 is configured to constitute a set of possible values of a resource reservation period for sidelink packet transport block (TB) transmission. The set of possible values of the resource reservation period includes at least one range of possible values of a predetermined resource reservation period. At least one range of possible values of the resource reservation period includes at least {0, 1:99, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000} milliseconds.

[0041] Thereby, the flexibility of the range of values that can be indicated by a UE having a role of transmission in sidelink communication is increased. In other words, a predetermined range of resource reservation periods covering all possible resource reservation periods that may be used in advanced V2X use cases with short latency requirements provides great flexibility during the pre - configuration of the possible set of resource reservation periods permitted within the sidelink resource pool or during network configuration, and different resource pools can be used to execute sidelink services having different traffic patterns and requirements.

[0042] The method of an embodiment of the present invention may further include a step of configuring a first UE 200-1 with a configured set of possible values of a resource reservation period for sidelink packet transport block (TB) transmission by a network node 100 (step S11 in FIG. 4), but is not limited thereto.

[0043] The network node 100 configures a configured set of possible values of a resource reservation period for sidelink packet transport block (TB) transmission via radio resource control (RRC) signalling exchanged between the network node 100 and the first UE 200-1. first The UE 200-1 may be configured. Generally, the signalling may include one or more signals and / or one or more symbols. Control information or a control information message or corresponding signalling (control signalling) may be transmitted on a control channel, for example, a physical control channel (in some cases, it may be a downlink channel or a sidelink channel, for example, one UE that schedules another UE). The RRC signalling may include the establishment of an RRC connection between the network node 100 and the first UE 200-1 via a communication link 300 or the existence of an active RRC connection. The first UE 200-1 may establish an active RRC connection with the network node 100, for example, via an RRC connection establishment procedure. When the RRC connection is established, the first UE 200-1 is, for example, in the RRC_CONNECTED state.

[0044] The network node 100 may configure the UE 200-1 with a configured set of possible values of a resource reservation period for sidelink packet transport block transmission via dedicated signalling or broadcast system information. first The UE 200-1 may be configured.

[0045] In one embodiment of the present invention, the network node 100 that configures the first UE200-1 with a set of possible values of the resource reservation period for transmitting a packet transport block (TB) within a sidelink resource pool is obtained from {0, 1:99, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000} milliseconds or is a subset thereof, and the network that configures the first UE200-1 with one or more resource reservation period values Node 100 may be included. However, it is not limited thereto. This may include the network node 100 that configures the first UE200-1 of one or more configured resource pools. For example, the network node 100 may configure the first UE200-1 of at least one first sidelink resource pool and / or at least one second sidelink resource pool detailed above. In another embodiment of the present invention, the network node 100 may configure the first UE200-1 with at least one first sidelink resource pool and / or at least one second sidelink resource pool detailed above and at least one other sidelink resource pool configured in the same manner as the at least one first sidelink resource pool and the at least one second sidelink resource pool.

[0046] In one embodiment of the present invention, the fact that the network node 100 configures the first UE200-1 with a set of possible values of the resource reservation period for sidelink packet transport block (TB) transmission may be initiated by the first UE200-1. For example, the first UE200-1 may send a request for resources for sidelink communication to the network node 100.

[0047] The following describes the use of the terms "configure and pre-configure", and "be configured and be pre-configured" as mentioned above. More specifically, the terms "configure and pre-configure", and "be configured and be pre-configured" as mentioned above are used according to the network coverage scenario when sidelink communication is established between the first UE 200-1 and the second UE 200-2.

[0048] The network coverage scenario may include at least an in-coverage scenario and an out-of-coverage scenario. The in-coverage scenario is related to the scenario where sidelink communication is established between the first UE 200-1 and the second UE 200-2, and the RRC connection between the first UE 200-1 and the network node 100 is either active or inactive. For example, it is the case when the first UE 200-1 is in the RRC_CONNECTED state, the RRC_IDLE state, or the RRC_INACTIVE state. The out-of-coverage scenario includes the scenario where sidelink communication is established between first UE 200-1 and second UE 200-2, but the RRC connection between the first UE 200-1 and the network node cannot be established.

[0049] In the in-coverage scenario, only "configure" is applicable. As detailed above, "configure" means that the network node 100, for example, firstBased on the request from UE200-1, a set of possible values of the resource reservation period for sidelink packet transport block (TB) transmission is semi-statically selected from a predetermined range of possible values of the resource reservation period, and accordingly, the first UE200-1 may be configured with the selected set of possible values of the resource reservation period. For example, the network node may semi-statically determine a sidelink resource pool and a set of possible values of the resource reservation period for the determined sidelink resource pool, and may configure the first UE200-1 and the set of possible values of the resource reservation period for the determined sidelink resource pool.

[0050] In the out-of-coverage scenario, only "pre-configuration" is applicable. In other words, in the out-of-coverage scenario, the first UE200-1 selects a sidelink resource pool from at least one pre-configured first sidelink resource pool and at least one second sidelink resource pool. "Pre-configuration" should be understood as meaning that the first UE200-1 has pre-stored or programmed a set of possible values of the resource reservation period from at least one range of possible values of the predetermined resource reservation period. For example, the first UE200-1 may select a sidelink resource pool from at least one pre-stored or pre-programmed first sidelink resource pool and at least one second sidelink resource pool.

[0051] In a further embodiment of the present invention, the first UE 200-1 may have at least one sidelink resource pool preconfigured, for example, via a subscriber identity module (SIM), such as at least one of the first sidelink resource pools detailed above. For example, at least one of the first sidelink resource pools detailed above may be stored in the first UE 200-1, for example, in the subscriber identity module (SIM) of the first UE 200-1 or another suitable module of the first UE 200-1. In this embodiment, when one or more sidelink resource pools are preconfigured, the first UE 200-1 may use at least one preconfigured first sidelink resource pool or may select a preconfigured sidelink resource pool. In this embodiment, "preconfiguring" can only be applied to out-of-coverage scenarios.

[0052] FIG. 6 schematically shows communication between the first UE 200-1 and the second UE 200-2 according to an embodiment of the present invention.

[0053] The first UE 200-1 is configured to instruct the second UE 200-2 of a resource reservation period from a preconfigured or network-configured set of possible values of a resource reservation period (step S20).

[0054] The first UE 200-1 may be configured to instruct the second UE 200-2 of a resource reservation period from a set of possible values of a resource reservation period within sidelink control information (SCI). The resource reservation period may be represented as one bit of the sidelink control information (SCI). The sidelink control information (SCI) may include further information required by the second UE (200-2) to be able to perform sidelink communication with the first UE 200-1.

[0055] The first UE 200-1 may be configured to transmit sidelink control information to the second UE 200-2 via a physical sidelink shared channel (PSSCH) or a physical sidelink control channel (PSCCH). The first UE 200-1 may be configured to transmit SCI within each subframe or slot of the sidelink resource pool.

[0056] A set of possible values of the resource reservation period is preconfigured or configured for each sidelink resource pool. A value from the set of possible resource reservation periods is obtained from at least one range of possible values of a predetermined resource reservation period including at least {0, 1:99, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000} milliseconds, or is a subset of at least one range of possible values of a predetermined resource reservation period.

[0057] As detailed above, FIG. 5 shows an example of a sidelink resource pool 500 when the preconfigured or network-configured resource reservation period value is 33 milliseconds. The set of sidelink transmission subframes or slots 501 permitted within the sidelink resource pool reserved by the UE for the transmission of the sidelink TB is periodic with a period of 33 milliseconds between the starts of two consecutive sidelink transmission subframes or slots. Each sidelink transmission within the subframe or slot 501 includes sidelink control information (SCI). The sidelink control information includes at least the resource reservation period, which is 33 milliseconds in this example.

[0058] In the example of the sidelink resource pool 500 shown in FIG. 5, the preconfigured or network-configured resource reservation period is 33 milliseconds. However, the first UE 200-1 may also be able to indicate multiple resource reservation periods for the sidelink resource pool 500. For example, each sidelink control information may include a different resource reservation period.

[0059] Therefore, different sidelink resource pools can be configured with different sets of period values or pre-configured to match different sidelink applications, service needs, and different traffic patterns and requirements.

[0060] Although detailed embodiments are described, these are merely for better understanding of the invention defined by the appended patent claims and are not considered to be limiting.

Industrial Applicability

[0061] The method and apparatus for the sidelink resource reservation period of the sidelink communication of the present invention can be used in the field of wireless communication technology.

Explanation of Signs

[0062] 1 Network architecture 100 Network nodes 200 UEs 200-1 First UE 200-2 Second UE 300 Communication links 400 Sidelink communication links 101, 201 Processors 102, 202 Memories 103, 203 Radio circuits S10, S11, S12 Steps 500 Sidelink resource pool 501 Sidelink transmission subframe or slot

Claims

1. A method for a sidelink resource reservation period when supporting sidelink communication, comprising: pre-configuring or configuring, by a first node, a set of possible values of a resource reservation period for sidelink packet transport block (TB) transmission; a first sidelink resource pool is pre-configured or configured in the set of possible values of the resource reservation period, and a second sidelink resource pool is pre-configured or configured in another set of possible values of the resource reservation period, and the another set of possible values of the resource reservation period is different from the set of possible values of the resource reservation period; the set of possible values of the resource reservation period includes a range of possible values of a predetermined resource reservation period, and the range of possible values of the predetermined resource reservation period includes at least {0, 1:99, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000} milliseconds, and the 1:99 refers to all integers from 1 to 99, characterized in that; Method.

2. The method for a sidelink resource reservation period according to claim 1, characterized in that the set of possible values of the resource reservation period further includes at least one flexibly configurable value.

3. The method for a sidelink resource reservation period according to claim 1, further comprising pre-configuring or configuring, by the first node, at least one first sidelink resource pool, wherein the at least one first sidelink resource pool is a set of resources allocated for sidelink communication.

4. configured to indicate a resource reservation period to another UE from a set of possible values of the resource reservation period; a first sidelink resource pool is pre-configured or configured in the set of possible values of the resource reservation period, and a second sidelink resource pool is pre-configured or configured in another set of possible values of the resource reservation period, and the another set of possible values of the resource reservation period is different from the set of possible values of the resource reservation period; The set of possible values of the resource reservation period includes a range of possible values of a predetermined resource reservation period, and the range of possible values of the predetermined resource reservation period includes at least {0, 1:99, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000} milliseconds, where 1:99 refers to all integers from 1 to 99, characterized in that A user equipment (UE) performing sidelink communication.

5. The user equipment according to claim 4, further configured to indicate the resource reservation period to the other user equipment from the set of possible values of the resource reservation period in the sidelink control information.

6. The user equipment according to claim 4 or 5, characterized in that the set of possible values of the resource reservation period is preconfigured or configured for each sidelink resource pool.

7. Including the step of a user equipment indicating a resource reservation period to another user equipment from a set of possible values of the resource reservation period, A first sidelink resource pool is preconfigured or configured in the set of possible values of the resource reservation period, and a second sidelink resource pool is preconfigured or configured in another set of possible values of the resource reservation period, and the another set of possible values of the resource reservation period is different from the set of possible values of the resource reservation period, The set of possible values of the resource reservation period includes a range of possible values of a predetermined resource reservation period, and the range of possible values of the predetermined resource reservation period includes at least {0, 1:99, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000} milliseconds, where 1:99 refers to all integers from 1 to 99, characterized in that A method for performing sidelink communication.

8. The method according to claim 7, further characterized in that the user equipment indicates the resource reservation period to the other user equipment from the set of possible values of the resource reservation period in the sidelink control information.

9. The method according to claim 7 or 8, characterized in that the set of possible values of the resource reservation period is preconfigured or configured for each sidelink resource pool.

10. Comprising a processor and a memory configured to store a computer program executed by the processor, The apparatus, wherein the processor is configured to perform a method for a sidelink resource reservation period when supporting the sidelink communication according to any one of claims 1 to 3 when executing the computer program.

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