WO2023204604A1 - 무선 통신 시스템에서 사이드링크 통신을 수행하는 방법 및 장치 - Google Patents
무선 통신 시스템에서 사이드링크 통신을 수행하는 방법 및 장치 Download PDFInfo
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- 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
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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
- H04W72/25—Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink
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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
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
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- 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
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- 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
- H04W72/0457—Variable allocation of band or rate
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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
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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
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
- H04W72/231—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the layers above the physical layer, e.g. RRC or MAC-CE signalling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/14—Spectrum sharing arrangements between different networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/02—Selection of wireless resources by user or terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/40—Resource management for direct mode communication, e.g. D2D or sidelink
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/14—Direct-mode setup
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/16—Interfaces between hierarchically similar devices
- H04W92/18—Interfaces between hierarchically similar devices between terminal devices
Definitions
- This disclosure relates to a method and device for performing sidelink communication in a wireless communication system.
- the International Telecommunication Union (ITU) is developing the International Mobile Telecommunication (IMT) framework and standards, and is currently discussing 5th generation (5G) communications through a program called “IMT for 2020 and beyond.” .
- 3GPP 3rd Generation Partnership Project
- NR New Radio
- 5G communication uses multiple channels to overcome unfavorable channel environments such as high path-loss, phase-noise, and frequency offset that occur on high carrier frequencies. It can support the transmission of a physical signal or physical channel through a beam. Through this, 5G communications can support applications such as enhanced Mobile Broadband (eMBB), massive Machine Type Communications (mMTC), and Ultra Reliable and Low Latency Communication (URLLC).
- eMBB enhanced Mobile Broadband
- mMTC massive Machine Type Communications
- URLLC Ultra Reliable and Low Latency Communication
- V2X communication a communication method that exchanges or shares information such as traffic conditions while communicating with road infrastructure and other vehicles while driving, can be considered.
- V2X refers to V2V (vehicle-to-vehicle), which refers to LTE (Long Term Evolution)/NR (New Radio)-based communication between vehicles, and V2P (V2P), which refers to LTE/NR-based communication between vehicles and terminals carried by individuals.
- vehicle-to-pedestrian and V2I/N (vehicle-to-infrastructure/network), which refers to LTE/NR-based communication between vehicles and roadside units/networks.
- a roadside unit may be a transportation infrastructure entity implemented by a base station or a fixed terminal. As an example, it may be an entity that transmits speed notifications to a vehicle.
- the technical problem of the present disclosure relates to a method and device for performing sidelink (SL) communication in a wireless communication system.
- the technical problem of the present disclosure relates to a method and device for setting up an SL resource pool on an unlicensed band.
- the technical problem of the present disclosure relates to a method and device for indicating a set SL resource pool on an unlicensed band.
- the technical problem of the present disclosure is a method and device for setting up an SL resource pool on an unlicensed band in consideration of regional regulations.
- the technical problem of the present disclosure is a method and device for satisfying the minimum occupied bandwidth regulation based on interlace-based resource pool configuration.
- a method for a terminal to allocate sidelink resources may be provided.
- the terminal in a method of configuring a sidelink resource pool in a terminal in a wireless communication system, receives resource pool configuration information based on upper layer signaling from a base station, based on the resource pool configuration information. It includes the step of performing sidelink communication with another terminal, but the resource pool setting information may be information based on the sidelink resource pool setting of the unlicensed band.
- a terminal when a terminal performs sidelink communication in one resource block set (RBS) based on one sidelink bandwidth (sidelink bandwidth part, SL BWP) in one carrier bandwidth, The terminal may perform sidelink communication based on the first resource pool configuration information.
- RBS resource block set
- SL BWP sidelink bandwidth part
- the first resource pool setting information may include at least one of information on whether an interlace-based sidelink resource pool is set and interlace-based subchannel index information associated with the resource pool.
- a terminal when a terminal performs sidelink communication in a plurality of resource block sets (RBS) based on one sidelink bandwidth (sidelink bandwidth part, SL BWP) in one carrier bandwidth, The terminal may perform sidelink communication based on the second resource pool configuration information.
- RBS resource block sets
- SL BWP sidelink bandwidth part
- the second resource pool setting information may include at least one of information on whether an interlace-based sidelink resource pool is set and interlace-based subchannel index information associated with the resource pool.
- the second resource pool setting information may further include at least one of RBS index list information and RBS number information associated with the resource pool.
- a method of performing sidelink (SL) communication in a wireless communication system can be provided.
- a method of setting up an SL resource pool on an unlicensed band can be provided.
- a method for indicating a configured SL resource pool on an unlicensed band can be provided.
- a method of setting up an SL resource pool on an unlicensed band can be provided in consideration of regional regulations.
- a method of satisfying minimum occupied channel bandwidth regulations based on interlace-based resource pool configuration can be provided.
- FIG. 1 is a diagram for explaining an NR frame structure to which the present disclosure can be applied.
- Figure 2 is a diagram showing an NR resource structure to which the present disclosure can be applied.
- Figure 3 is a diagram showing an NR sidelink slot structure to which the present disclosure can be applied.
- Figure 4 is a diagram showing NR sidelink frequencies to which the present disclosure can be applied.
- Figure 5 is a diagram showing the configuration of an NR sidelink resource pool to which the present disclosure can be applied.
- Figure 6 is a diagram showing unlicensed bands in each region for NR sidelink communication to which the present disclosure can be applied.
- Figure 7 is a diagram showing the use of the 5GHz unlicensed band to which the present disclosure can be applied.
- FIG. 8 is a diagram illustrating a method of increasing bandwidth considering PSD limitations to which the present disclosure can be applied.
- FIG. 9 is a diagram illustrating a method of setting a guard band in consideration of a shared band within an intra cell to which the present disclosure can be applied.
- Figure 10 is a diagram showing a single RBS operation to which the present disclosure can be applied.
- FIG. 11 may be a method of indicating an interlace structure for a resource pool in a single RBS to which the present disclosure can be applied.
- Figure 12 is a diagram showing a method of setting a resource pool in a plurality of RBS to which the present disclosure can be applied.
- FIG. 13 is a diagram illustrating a method for instructing interlace-based resource pool settings on a plurality of RBS for wideband operation to which the present disclosure can be applied.
- FIG. 14 is a diagram illustrating a method for instructing interlace-based resource pool settings on a plurality of RBSs for wideband operation to which the present disclosure can be applied.
- FIG. 15 is a diagram illustrating a method for instructing interlace-based resource pool settings on a plurality of RBSs for wideband operation to which the present disclosure can be applied.
- Figure 16 is a diagram showing a method of setting a sidelink resource pool for an unlicensed band to which the present disclosure can be applied.
- Figure 17 is a diagram showing a base station device and a terminal device to which the present disclosure can be applied.
- a component when a component is said to be “connected,” “coupled,” or “connected” to another component, this is not only a direct connection relationship, but also an indirect connection relationship in which another component exists in between. It may also be included.
- a component when a component is said to "include” or “have” another component, this does not mean excluding the other component, but may further include another component, unless specifically stated to the contrary. .
- first and second are used only for the purpose of distinguishing one component from other components, and do not limit the order or importance of 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 similarly, the second component in one embodiment may be referred to as a first component in another embodiment. It may also be called.
- distinct components are intended to clearly explain each feature, and do not necessarily mean that the components are separated. That is, a plurality of components may be integrated to form one hardware or software unit, or one component may be distributed to form a plurality of hardware or software units. Accordingly, even if not specifically mentioned, such integrated or distributed embodiments are also included in the scope of the present disclosure.
- components described in various embodiments do not necessarily mean essential components, and some may be optional components. Accordingly, embodiments consisting of a subset of the elements described in one embodiment are also included in the scope of the present disclosure. Additionally, embodiments that include other components in addition to the components described in the various embodiments are also included in the scope of the present disclosure.
- This disclosure describes a wireless communication network, and operations performed in the wireless communication network are performed in the process of controlling the network and transmitting or receiving signals in a system (e.g., a base station) in charge of the wireless communication network, or This can be done in the process of transmitting or receiving a signal from a terminal connected to a wireless network.
- a system e.g., a base station
- BS Base Station
- eNB eNodeB
- gNB gNodeB
- AP Access Point
- UE User Equipment
- MS Mobile Station
- MSS Mobile Subscriber Station
- SS Subscriber Station
- non-AP station non-AP STA
- transmitting or receiving a channel includes transmitting or receiving information or signals through the channel.
- transmitting a control channel means transmitting control information or signals through the control channel.
- transmitting a data channel means transmitting data information or signals through a data channel.
- NR New Radio
- the NR system supports a variety of subcarrier spacing (SCS) by considering various scenarios, service requirements, and potential system compatibility.
- SCS subcarrier spacing
- the NR system uses multiple channels to overcome unfavorable channel environments such as high path-loss, phase-noise, and frequency offset that occur at high carrier frequencies.
- the NR system can support applications such as enhanced Mobile Broadband (eMBB), massive Machine Type Communications (mMTC)/ultra Machine Type Communications (uMTC), and Ultra Reliable and Low Latency Communications (URLLC).
- eMBB enhanced Mobile Broadband
- mMTC massive Machine Type Communications
- uMTC ultra Machine Type Communications
- URLLC Ultra Reliable and Low Latency Communications
- 5G mobile communication technology may be defined to include not only the NR system, but also the existing Long Term Evolution-Advanced (LTE-A) system and Long Term Evolution (LTE) system.
- 5G mobile communication may include technology that operates in consideration of backward compatibility with previous systems as well as the newly defined NR system. Therefore, the following 5G mobile communication may include technology operating based on the NR system and technology operating based on previous systems (e.g., LTE-A, LTE), and is not limited to a specific system.
- FIG. 1 is a diagram for explaining an NR frame structure to which the present disclosure can be applied.
- the transmission timing of the uplink transmission frame i is determined based on Equation 1 below based on the downlink reception timing at the terminal.
- FDD Frequency Division Duplex
- TDD Time Division Duplex
- FR1 Frequency Range 1
- FR2 Frequency Range 2
- 13792 7.020 ⁇ s.
- Figure 2 is a diagram showing an NR resource structure to which the present disclosure can be applied.
- Resource Elements (REs) in the resource grid may be indexed according to each subcarrier spacing.
- one resource grid can be created per antenna port and per subcarrier spacing. Uplink and downlink transmission and reception can be performed based on the corresponding resource grid.
- one resource block consists of 12 REs, and an index (nPRB) for one RB can be configured for each 12 REs.
- the index for RB can be utilized within a specific frequency band or system bandwidth.
- the index for RB can be defined as Equation 2 below. here, means the number of subcarriers per RB, and k means the subcarrier index.
- an LTE/LTE-A system may support one subcarrier spacing (SCS), but an NR system may support multiple SCSs.
- SCS subcarrier spacing
- the new numerology for the NR system supporting multiple SCS is to solve the problem of not being able to use a wide bandwidth in the frequency range or carrier such as 700MHz or 2GHz, 3GHz or less, 3GHz-6GHz. , can operate in frequency ranges or carriers such as 6GHZ-52.6GHz or above 52.6GHz.
- Table 1 below shows examples of numerology supported by the NR system.
- the numerology can be defined based on the subcarrier spacing (SCS), Cyclic Prefix (CP) length, and number of OFDM symbols per slot used in the OFDM (Orthogonal Frequency Division Multiplexing) system.
- SCS subcarrier spacing
- CP Cyclic Prefix
- UL-BWP-mu and UL-BWP-cp OFDM symbols per slot used in the OFDM (Orthogonal Frequency Division Multiplexing) system.
- a normal slot can be defined as a basic time unit used to transmit one piece of data and control information in the NR system.
- the length of the normal slot can be basically set to the number of 14 OFDM symbols.
- subframes have an absolute time length equivalent to 1 ms in the NR system and can be used as a reference time for the length of other time sections.
- a time interval such as a subframe of LTE may be required in the NR standard.
- TTI Transmission Time Interval
- one subframe may be set to 1 ms and may include 14 OFDM symbols (or 12 OFDM symbols).
- non-slots may be defined in NR.
- a non-slot may mean a slot with a number that is at least one symbol smaller than a normal slot. For example, when providing low latency such as URLLC service, latency can be reduced through non-slots with a smaller number of symbols than normal slots.
- the number of OFDM symbols included in the non-slot can be determined considering the frequency range. For example, in frequency ranges above 6 GHz, non-slots of 1 OFDM symbol length may be considered. As a further example, the number of OFDM symbols defining a non-slot may include at least two OFDM symbols.
- the range of the number of OFDM symbols included in the non-slot can be set as the length of the mini slot up to a predetermined length (for example, normal slot length - 1).
- a predetermined length for example, normal slot length - 1.
- the number of OFDM symbols may be limited to 2, 4, or 7 symbols, but is not limited thereto.
- subcarrier spacing with u equal to 1 and 2 may be used, and in the unlicensed band above 6 GHz, subcarrier spacing with u equal to 3 and 4 may be used.
- u is 4, it may be used for SSB (Synchronization Signal Block).
- Table 2 shows the number of OFDM symbols per slot for normal CP for each subcarrier spacing setting (u) ( ), number of slots per frame ( ), number of slots per subframe ( ). Table 2 shows the above-described values based on a normal slot with 14 OFDM symbols.
- Table 3 shows the number of slots per frame and slots per subframe based on a normal slot with 12 OFDM symbols per slot when the extended CP is applied (i.e., when u is 2 and subcarrier spacing is 60kHz). indicates the number of
- one subframe may correspond to 1 ms on the time axis.
- one slot may correspond to 14 symbols on the time axis.
- one slot may correspond to 7 symbols on the time axis.
- Table 4 can show the number of slots and symbols for each SCS. In Table 4, the SCS at 480 kHz may not be considered, but these examples are not limited.
- V2X service e.g. LTE Rel-14 V2X
- V2X terminals User Equipment, UE
- V2X UEs can exchange status information with each other through sidelink.
- V2X UEs can exchange information with infrastructure nodes and/or pedestrians.
- V2X service e.g. LTE Rel-15
- LTE Rel-15 includes carrier aggregation, high order modulation, latency reduction, transmission diversity, and sTTI (Transmission Time) within the sidelink. Interval) can be supported.
- new features can be applied to V2X communication.
- a V2X UE may operate considering coexistence with other V2X UEs.
- a V2X UE may use the same resource pool as other V2X UEs.
- vehicle platooning may be a technology in which multiple vehicles dynamically form a group and operate similarly.
- Extended Sensors can be a technology that collects and exchanges data obtained from sensors or video images.
- Advanced Driving may be a technology in which a vehicle is driven based on full automation or semi-automation.
- Remote Driving may be a technology that provides technology and applications for remote control of a vehicle, and more detailed information about the above may be shown in Table 5 below.
- SA1 is an eV2X (enhanced V2X) support technology to support V2X services and can support cases where it operates in various systems (e.g. LTE, NR).
- LTE Long Term Evolution
- NR enhanced V2X
- the case where the NR V2X system is the first V2X system and the LTE V2X system is the second V2X system can be considered.
- the NR V2X system and the LTE V2X system may be different V2X systems.
- NR V2X capability may not necessarily be limited to supporting only V2X services, and which V2X RAT to use may be selectively supported.
- new service requirements for public safety and commercial use cases may be additionally considered for NR V2X services.
- use cases include more advanced V2X services, public safety services, Network Controlled Interactive Service (NCIS), Gap Analysis for Railways (MONASTERYEND), Enhanced Relays for Energy eFficiency and Extensive Coverage (REFEC), and Audio-Visual Service (AVPROD). Production) may include at least one of the services, and is not limited to the above-mentioned services.
- NCIS Network Controlled Interactive Service
- MONASTERYEND Gap Analysis for Railways
- REFEC Enhanced Relays for Energy eFficiency and Extensive Coverage
- AVPROD Audio-Visual Service
- Production may include at least one of the services, and is not limited to the above-mentioned services.
- NR Physical Sidelink Shared Channel may be a physical layer NR SL (Sidelink) data channel.
- V2X terminals can exchange data and control information (e.g. 2nd SCI, CSI) through NR PSSCH.
- NR Physical Sidelink Control Channel (NR PSCCH) is a physical layer NR SL control channel.
- NR PSCCH is a channel for transmitting control information (1st SCI, Sidelink Control Information) including scheduling information of the NR SL data channel and 2nd SCI instructions. That is, the V2X terminal can transmit control information for sidelink data communication to another V2X terminal through PSCCH.
- the NR Physical Sidelink Feedback Channel is a channel that delivers physical layer NR HARQ (Hybrid Automatic Repeat Request) feedback information and provides HARQ-ACK feedback information corresponding to the NR SL data channel (i.e. PSSCH). It is a channel for transmission. After transmitting data to another V2X terminal, the V2X terminal can receive HARQ feedback information of the data through the NR PSFCH.
- NR Sidelink Synchronization Signal/Physical Sidelink Broadcast Channel block (SLSS/PSBCH block) is a physical layer in which the NR sidelink synchronization signal and broadcast channel are transmitted in one continuous time. It is a channel block.
- the SLSS/PSBCH block may be transmitted periodically based on a set of one or more block indices to support beam-based transmission on the NR frequency band.
- the synchronization signal consists of Primary Sidelink Synchronization Signal (PSSS) and Secondary Sidelink Synchronization Signal (SSSS).
- PSSS Primary Sidelink Synchronization Signal
- SSSS Secondary Sidelink Synchronization Signal
- the synchronization signal is generated in a sequence based on at least one SLSSID value.
- NR Physical Sidelink Broadcast Channel (PSBCH) is a channel that delivers system information required to perform V2X sidelink communication.
- NR PSBCH is transmitted together with SLSS and is periodically transmitted in the form of a set of SLSS/PSBCH block indexes to support beam-based transmission.
- a physical sidelink control channel (PSCCH) and a physical sidelink data channel (PSSCH) may be defined based on NR V2X.
- the terminal can transmit sidelink control information (SCI) to another terminal through PSCCH.
- SCI sidelink control information
- the transmitting terminal can transmit the 1st SCI (1st SCI, SCI format 1-A) to the receiving terminal through PSSCH.
- SCI is PSSCH and secondary SCI within PSSCH ( SCI) can be used for scheduling
- SCI includes priority information, time/frequency resource allocation information, resource reservation information, demodulation reference signal (DMRS) pattern information, SCI format instruction information
- Parameters for SCI and PSSCH rate matching operations include beta-offset indicator information, DMRS port number information, MCS (Modulation Coding Scheme) information, and additional MCS table indicator information (eg 64 QAM, or 256 QAM or URLLC MCS table) It may include at least one of (one of), PSFCH overhead indication information (parameters for 2nd SCI and PSSCH rate matching operation), and reserved bits.
- Figure 3 is a diagram showing an NR sidelink slot structure to which the present disclosure can be applied.
- one sidelink slot includes one Automatic Gain Control (AGC) symbol. Additionally, one SL slot includes one transmission-reception switching (Tx-Rx switching) symbol.
- the PSSCH which is a data transmission channel, is transmitted through one or more subchannels (e.g. two subchannels in FIG. 3).
- PSCCH (1st SCI), 2nd SCI, PSSCH (Data), and DMRS (Demodulation RS) for demodulation will be transmitted in the remaining OFDM (Orthogonal Frequency Division Multiplexing) symbols, excluding the AGC symbol and Tx-Rx conversion symbol.
- the positions of PSCCH (1st SCI), 2nd SCI, PSSCH (Data), and DMRS (Demodulation RS) for demodulation may be the same as in Figure 3, but are not limited thereto.
- PSCCH and 2nd SCI exist in the first subchannel, and PSSCH and DMRS can be allocated considering this.
- the second subchannel is a subchannel in which PSCCH and 2nd SCI do not exist, and is PSSCH and DMRS can be allocated as shown in Figure 3.
- the number of OFDM PSSCH DMRS can be set to one or more depending on the upper layer settings and the channel environment of the terminal.
- PSCCH (1st SCI) receives decoding using the PSCCH's DMRS (ie PSCCH DMRS) and is equally allocated and transmitted to each of the four resource elements within one resource block (RB).
- PSCCH DMRS the PSCCH's DMRS
- SCI is decoded using PSSCH DMRS.
- one resource pool related to an NR sidelink may support all of Frequency Division Multiplexing (FDM), Time Division Multiplexing (TDM), and Spatial Division Multiplexing (SDM).
- FDM Frequency Division Multiplexing
- TDM Time Division Multiplexing
- SDM Spatial Division Multiplexing
- Figure 4 is a diagram showing NR sidelink frequencies to which the present disclosure can be applied.
- the NR sidelink is located in at least one of FR1 (Frequency Range 1, sub 6GHz), FR2 (Frequency Range 2, i.e. up to 52.6GHz), unlicensed ITS bands, and licensed bands. It can operate based on As a specific example, referring to FIG. 4, 5,855 to 5,925 MHz may be allocated for ITS service (technology neutral manner).
- NR V2X Quality of Service (QoS) requirements may be considered.
- QoS Quality of Service
- the requirements can be set as in Table 6 below, and Table 7 can be a table showing PC5 QoS for NR V2X.
- each NR V2X terminal may have a different maximum bandwidth capability (max. BW capability).
- maximum bandwidth capability at least one of UE capability, QoS related information, radio bearer configuration, and physical layer configuration between NR V2X terminals.
- AS level information including may be exchanged.
- the sidelink HARQ procedure is described. Whether the V2X terminal reports HARQ feedback is indicated by upper layer (e.g. RRC) settings and SCI signaling (e.g. 2nd SCI). For example, when a V2X terminal performs communication based on group cast, the HARQ feedback report can be determined based on the distance between the transmitting terminal and the receiving terminal.
- RRC Radio Resource Control
- sidelink HARQ feedback may be enabled or disabled.
- enabling/disabling of HARQ feedback may be determined based on at least one of channel conditions (e.g. RSRP), transmitting terminal/receiving terminal distance, and QoS requirements.
- whether to transmit HARQ feedback may be determined by the physical distance between the transmitting terminal and the receiving terminal.
- the receiving terminal may operate by feeding back a negative response only when PSSCH decoding fails. This may be an Option 1 action.
- the receiving terminal may operate by feeding back a positive response or a negative response based on whether PSSCH decoding is successful, which may be an Option 2 operation.
- option 1 operation which feeds back only negative responses with HARQ NACK based on groupcast
- feedback on PSSCH can be performed if the physical distance between the transmitting terminal and the receiving terminal is less than or equal to the communication range requirement.
- the V2X terminal may not perform feedback on the PSSCH.
- the location of the transmitting terminal is indicated to the receiving terminal through the SCI associated with the PSSCH.
- the receiving terminal estimates the distance to the transmitting terminal based on the information included in the SCI and its own location information and can operate as described above.
- the receiving terminal may generate and transmit HARQ ACK/NACK for PSSCH based on whether decoding of the corresponding TB (Transport Block) was successful.
- the NR sidelink resource allocation mode includes a mode in which the base station schedules sidelink transmission resources.
- the mode in which the base station schedules sidelink transmission resources may be mode 1.
- the V2X terminal when the V2X terminal is located within the base station coverage, the V2X terminal can receive sidelink resource information from the base station based on mode 1.
- the V2X terminal there is a mode in which the V2X terminal directly determines the resource for sidelink transmission among sidelink resources configured by the base station/network or pre-configured sidelink resources.
- the mode in which the terminal directly determines the sidelink transmission resources may be mode 2.
- the numerology and waveform for the side link can be considered, and can be as shown in Table 8 below.
- the SCS and CP lengths supported by FR1 and FR2, respectively may be as shown in Table 8 below.
- the waveform may not support DFT-S-OFDM but only OFDM, but may not be limited thereto.
- a sidelink-synchronization signal block (SL-SSB) can be defined independently for each frequency range, which can be similar to NR-Uu.
- FIG. 5 is a diagram showing an NR sidelink resource pool configuration (SL resource pool configuration) to which the present disclosure can be applied.
- a resource pool may refer to resources in time and frequency used for sidelink transmission and reception.
- at least one resource pool may be set within one SL BWP within one carrier.
- the resources of the resource pool may be set based on time resources in slot sets and frequency resources in units of consecutive subchannel sets. Additionally, resource pools can be set up for transmission and reception, respectively.
- resources on the time domain and frequency domain may be set based on upper layer parameters.
- the frequency resource corresponding to the excluded resource block is a case where the total available RB resources do not exactly match the subchannel size (i.e., the number of RBs constituting one subchannel does not reach), and some remaining resources are used. It can mean RBs. At this time, the corresponding resources may not be used in the NR sidelink.
- a reserved slot may mean a remaining slot in a situation where a multiple unit of the length of a bitmap (eg sl-TimeResource) on a time resource is not established, and is not used as an NR sidelink resource. It may not be possible.
- a communication method based on an unlicensed band may be a method of occupying a channel through competition and performing communication based on the occupied channel.
- Communication based on an unlicensed band can also be performed in communications between a base station and a terminal, and the following describes operations based on the case where an unlicensed band is used for sidelink communication.
- the unlicensed band can also be used in sidelink communication, which is communication between terminals.
- the sidelink resource pool needs to be set considering the use of the sidelink unlicensed band. More specifically, sidelink communication can be performed based on a resource pool, and when communication is performed through an unlicensed band, it is necessary to set the resource pool settings differently.
- the resource pool for sidelink communication is set on a slot basis, and a symbol that can be used for the sidelink within a slot can be determined, which can be as shown in FIG. 5 described above. Additionally, in the frequency domain, it can be set based on the number of consecutive subchannels, as shown in FIG. 5 described above.
- the above-mentioned sidelink resource pool setting can be set considering unlicensed band communication, which will be described later.
- Figure 6 is a diagram showing unlicensed bands in each region for NR sidelink communication to which the present disclosure can be applied.
- the frequency range of NR FR1 could be from 450 MHz to 6 GHz, but the frequency range can be changed from 450 MHz to 7.125 GHz.
- the NR FR1 frequency range may be changed for the unlicensed band of the 6 GHz band, but may not be limited thereto.
- unlicensed bands may be located below 1 GHz, 2.4 GHz, 5 GHz, 6 GHz, 37 GHz (USA only), and 60 GHz, but may not be limited thereto.
- the 5 GHz band in the system may be band 46, which is defined as 5150-5925 MHz.
- band 49 (3550-3700 MHz) may be defined as a CBRS (citizens broadband radio service) band for LAA operation, but may not be limited thereto.
- FIG. 7 is a diagram showing the use of the 5GHz unlicensed band to which the present disclosure can be applied.
- each band within the 5GHz unlicensed band is set, and use of the unlicensed band can be set based on this. As an example, it can be divided and used in units of 20 MHz, and each 20 MHz can be one channel.
- the low frequency band of 5150 to 5350 MHz within the above-mentioned band is specified in most areas to have a maximum transmission power of 23dBm for indoor use.
- the band above 5470 MHz it is used in areas where transmission power is up to 30dBm and outdoor use is mostly used.
- additional requirements may exist in some regions, given in terms of effective isotropic radiated power (EIRP) values based on Table 9 below, along with limitations on maximum transmission power.
- EIRP effective isotropic radiated power
- PSD power spectral density
- European regulations may limit PSD to 10dBm/MHz. Therefore, if the bandwidth is not 20MHz, the device cannot transmit with the maximum transmission power of 23dBm.
- FIG. 8 is a diagram illustrating a method of increasing bandwidth considering PSD limitations to which the present disclosure can be applied.
- the case of small data transmission that requires only a small bandwidth can be considered, as shown in FIG. 8.
- coverage can be expanded.
- minimum bandwidth occupancy regulations can be satisfied by transmission over a wide bandwidth.
- a method of transmitting small data over a wide bandwidth may be preferred.
- the maximum channel occupancy time which corresponds to the maximum time that can be occupied
- Japan allows a maximum COT of up to 4ms
- Europe allows a maximum COT of 8ms or 10ms, but this is only an example and is not limited to the above-described embodiment.
- Europe may support Frame Base Equipment (FBE) and Load Base Equipment (LBE) rules.
- FBE is set to HiperLAN (High Performance Radio LAN)/2
- LBE can be adopted and applied from the Wi-Fi standard, and both can be supported in NR as a new communication system.
- the minimum occupied bandwidth may be a regulation of the minimum bandwidth that must be occupied once channel access is successful.
- the minimum occupied bandwidth regulation may be set to occupy more than 80 to 90% of the normal channel bandwidth (nominal channel BW).
- a terminal transmits a PUSCH to a base station in an unlicensed band
- resources for the PUSCH may be requested to be allocated to the entire band in an interlaced form at a specific bandwidth, but may not be limited to the embodiment. .
- regulations on dynamic frequency selection may be regulations that limit bandwidth use for the purpose of protecting systems (e.g. radio) with high priority for use of unlicensed bands.
- the transmit power control regulation may be a regulation that limits the use of a transmission power lower than the maximum allowable transmission power value.
- LBT (listen before talk) regulations may be regulations for procedures for channel access, and Europe may support FBE and LBE rules. At this time, FBE is Hiperlan/2, LBE can be adopted and applied from the Wi-Fi standard, and both can be supported in NR.
- the 5 GHz unlicensed band can be used based on the above-mentioned, but discussions on use of the 6 GHz band are ongoing in each country and organization.
- the 6 GHz band may be a band that is not yet used in mobile systems, unlike the 5 GHz band. That is, unlike the 5GHz band shared by multiple mobile communication systems, the 6GHz band can be used for one specific communication system. Accordingly, problems or inefficiencies that arise as different systems coexist can be reduced.
- FIG. 9 is a diagram illustrating a method of setting a guard band in consideration of a shared band (e.g. unlicensed band) within an intra cell to which the present disclosure can be applied.
- a shared band e.g. unlicensed band
- the terminal receives IntraCellGuardBandsPerSCS parameters for each of the uplink carrier (UL carrier) and downlink carrier (DL carrier) from the base station. It can be provided from the base station based on settings.
- the UE can receive upper layer signaling about the size of the starting common resource block (CRB) and number of CRBs for each guard band.
- a CRB may be a resource block defined/set based on point A, which is the starting point of the transmission bandwidth on the carrier in the frequency domain.
- the terminal can check information about point A through base station signaling, and can recognize the CRB location on the frequency based on this.
- each guardband is a starting CRB. It is defined based on parameters, and the size of the number of CRBs in each guard band is It can be defined based on parameters.
- the terminal can receive the above-described information through higher layer signaling based on the startCRB and nrofCRBs parameters, respectively.
- s ⁇ 0,1,... , -2 ⁇ is the number of RB sets, and x can be set to DL or UL for downlink and uplink.
- RB sets can be configured as a resource block set (RBS) within one carrier through guardband configuration.
- a guard band may be configured based on the IntraCellGuardBandsPerSCS parameter, and RBS may be configured within one carrier accordingly.
- each RBS frequency bandwidth may correspond to the LBT frequency bandwidth. That is, each RBS can be set to a bandwidth corresponding to the LBT procedure performed through the base station and terminal.
- RB set 1 (911) and RB set 2 (922) can occupy the corresponding band and perform communication if LBT is successful in the corresponding area corresponding to the LBT bandwidth.
- RBS may correspond to LBT bandwidth.
- a transmitting node e.g. gNB or UE
- each RBS may be defined as a start CRB and an end CRB.
- the starting CRB is , and the ending CRB is It can be.
- the size of the guard band 913 may be nrofCRBs.
- the size nrofCRBs of the guard band 913 is the subcarrier spacing ⁇ and carrier size. It may not be expected to be set to a size smaller than the number of applicable intra-cell guard bands defined in consideration of requirements regarding interference with wireless bandwidth according to .
- the start CRB and end CRB for each RBS (911, 912) can be determined based on the RBS index s, and the RBS index s is s ⁇ 0,1,... , -1 ⁇ . That is, the RBS index It may be a resource block with a size of is the number of CRBs determined through the start CRB and end CRB based on Equation 3 below. Additionally, the start CRB and end CRB in each RBS may be as shown in Equation 4 and Equation 5 below.
- the ⁇ and carrier size of the carrier CRB indexes for a nominal intra-cell guard band and RBS pattern based on can be determined according to the requirements of the RF standard. Additionally, as an example, if the general intra cell guard band and RBS pattern described above do not include an intra cell guard band, the RBS of the corresponding carrier may be assumed to be 1.
- two LBT BWs (RBS 0, RBS1) may be configured within one BWP 922 within one carrier bandwidth.
- one guard band 913 may be set between the two RBSs 911 and 913.
- the positions of each of the two RBSs 911 and 913 can be determined as shown in FIG. 9 based on the above-described upper layer parameters.
- the RBS associated with each BWP can be confirmed.
- the sidelink communication method considering advanced V2X service support based on the sidelink (e.g. NR Sidelink) of a new communication system and other services (e.g. public safety, wearable device).
- sidelink e.g. NR Sidelink
- other services e.g. public safety, wearable device.
- a sidelink communication method taking these into account is described below.
- an increase in the sidelink data rate may be required for the purpose of sharing video information between autonomous vehicles, but may not be limited to this.
- sidelink carrier aggregation SL carrier aggregation
- sidelink resources on the unlicensed band and sidelink resources on the unlicensed band may be necessary.
- increased data rates can be supported by improving FR2 band sidelink operation. Based on the above, the increased data transmission rate on the sidelink can be applied to more commercial applications, making it possible to use NR-based sidelinks in a larger market.
- sidelink frequencies for sidelink operation in a new system may exist within the FR1 (410MHz to 7.125GHz), FR2 (24.25GHz to 52.6 GHz) and 52.6GHz to 71GHz bands.
- the sidelink may be determined by considering both unlicensed bands and licensed bands.
- the NR sidelink for NR sidelink operation may be applied as a common design in both FR1 and FR2, but may not be limited to this.
- the following describes the wireless access method for NR sidelink unlicensed carrier operation, focusing on the frequency bands corresponding to the 5 GHz and 6 GHz unlicensed bands (FR1 unlicensed bands (n46 and n96/n102)) corresponding to the FR1 frequency range.
- the side link takes into account the availability of the LTE (ng-eNB) / NR (gNB) Uu link, which is a 3GPP NG-RAN network (particularly for related settings for SL data transmission and reception and SL physical resource allocation purposes). can be set.
- the base station below may include an ng-eNB or gNB on an NG-RAN network, and is referred to as a base station for convenience of explanation, but may not be limited to a specific form.
- the following describes a method of setting up a resource pool for a new sidelink channel so that the NR sidelink wireless interface can be operated in an unlicensed band.
- Governmental terms may exist differently in each region.
- an interlace resource allocation method with transmission resources for the entire bandwidth can be considered.
- the interlace resource allocation method with transmission resources over the entire bandwidth can satisfy the occupied channel bandwidth (e.g. Occupied Channel Bandwidth in ETSI EN 301 893 for 5GHz unlicensed band), which is a regulation related to unlicensed bands considered in a specific region (e.g. ETSI).
- the above-mentioned regulations stipulate that when one transmitting device occupies a channel in an unlicensed band and performs transmission, the transmission power is limited to a bandwidth equivalent to at least 80% to 100% of the declared nominal channel bandwidth. It specifies that transmission including 99% must be supported, as described above. Therefore, there is a need for SL-U (sidelink unlicensed band), which can operate in the corresponding unlicensed band, to also satisfy OCB requirements.
- SL-U sidelink unlicensed band
- the new SL-U resource pool configuration described below may be an interlace-based resource pool configuration method.
- SL-U resource pool setting may be performed through the method described below, but may not be limited thereto.
- the SL-U resource pool setting may be a subchannel-based interlace-based resource pool setting method rather than an interlace-based resource pool setting method configured in RB units, and may be configured in any possible unit on the frequency (e.g. subcarrier/RE, An interlace-based resource pool configuration method can be considered using (RB, Subchannel, RBS).
- a method set based on continuous frequency resources may be applied.
- interlace-based resource pool settings may be applied to some contiguous frequency resource units (e.g.
- the SL-U resource pool setting is applied similarly to the existing SL resource pool setting, while the method of scheduling frequency resources may be applied in an interlace manner, and is not limited to a specific embodiment.
- a plurality of SL-U resource pool setting methods including the following SL-U resource pool setting method, exist for transmission, reception, and various other purposes, and a specific SL-U resource pool setting method It can be provided to the terminal through upper layer signaling.
- the upper layer signaling may include at least one of upper layer signaling from a branch station, upper layer signaling from another terminal, or upper layer settings preset inside the terminal, and is not limited to a specific embodiment.
- the following describes a method for configuring an interlace-based SL-U resource pool in sidelink communication, but the method is not limited to this and various types of configuration may be possible. However, for convenience of explanation, the description below is based on the interlace-based SL-U resource pool setting.
- the sidelink resource pool can be set considering time resources and frequency resources.
- sl-SubchannelSize ⁇ 10, 15, 20, 25, 50, 75 and 100 ⁇ RBs
- the terminal can perform communication after occupying the channel based on a channel access procedure (e.g. LBE, FBE).
- the channel access procedure may be an operation to occupy the corresponding channel for a certain period of time based on channel sensing.
- time resource allocation for sidelink communication on the unlicensed band can be defined by the channel access procedure in the same way as other wireless access systems (e.g. NR-U, LTE LAA, WiFi) on the unlicensed band.
- sidelink communication on the unlicensed band considers acquiring unlicensed band resources on the time domain through the same method as the unlicensed band channel access procedure, and may not form a separate resource pool on the time domain, but is not limited to this. You can.
- the resource pool setting in the time domain may also be set based on the channel occupancy procedure.
- Sidelink resources may be finally determined and/or set through resource pool setting and channel occupation procedures, and are not limited to specific embodiments.
- the base station/terminal may perform a sidelink operation on the unlicensed band to occupy the resource by performing a channel occupation procedure before the indicated time resource.
- the resource pool in the time domain is not considered, and matters related to setting the resource pool in the frequency domain are described.
- the sidelink resource settings on the unlicensed band in the frequency domain need to be set considering that the sidelink is performed through the unlicensed band.
- settings to satisfy regulation-based conditions may be necessary in areas where the above-mentioned regulations apply, but may not be limited to this.
- the resource pool for sidelink communication in the unlicensed band can be set based on the interlace method.
- regulations for unlicensed bands may exist in certain regions. For example, there may be regulations regarding the maximum transmission power and maximum PSD (e.g. 10 dBm/MHz) that a device can use.
- the maximum transmission power and maximum PSD e.g. 10 dBm/MHz
- the interlace resource allocation method can satisfy the regulations related to the minimum occupied bandwidth described above.
- the interlace resource allocation method may mean defining and using specific resource units (e.g. RB, subchannel, etc.) with uniform frequency spacing on frequency resources as a set. Accordingly, resource units allocated at uniform intervals on one frequency channel can be indicated through one index.
- resource units e.g. RB, subchannel, etc.
- a method of allocating each subchannel based on interlace may be applied based on the case where a plurality of RBs constituting the subchannel are allocated at uniform intervals, but the method may not be limited to this.
- Figure 10 is a diagram showing a single RBS operation to which the present disclosure can be applied.
- interlace-based resources are resource blocks allocated based on point A and may be set based on CRB, but may not be limited thereto. Additionally, when the same interlace is applied to different BWPs, PUSCH/PUCCH resource allocation between different users may become complicated if different interlace indexes are used.
- An interlace-based resource pool on a specific SL BWP in the frequency domain can be set and indicated through upper layer signaling and/or DCI/SCI-based physical layer signaling.
- a parameter for whether to configure an interlace-based sidelink resource pool may be set, and the parameter may be set in the terminal through upper layer signaling.
- the corresponding parameter can be set to “enable”.
- the parameter can be set to “disable”.
- the sidelink resource pool may be set based on the number of consecutive subchannels as before, but may not be limited to this.
- the interlace is a resource block that is configured based on point A and can be configured based on the CRB.
- the interlace index can be set based on the CRB.
- parameters for an interlace-based subchannel index associated with a resource pool may be set and provided to the terminal through an upper layer.
- the subchannel index may be set to 0 to M-1.
- the interlace structure can be set based on the LBT bandwidth considered in the unlicensed band.
- the number of RBs for configuring one RBS in the LBT bandwidth may vary depending on the SCS. For example, in the case of 15 kHz SCS, the number of RBs for configuring RBS may be 100 to 110 RBs.
- the number of RBs to configure RBS may be 50 to 55 RBs.
- the interlace structure may be set to 10 RBs in 15kHz SCS, and 5 RBs in 30kHz SCS. That is, in the case of 15 kHz SCS, a portion of the same interlace may exist for every 10 RBs.
- the number of RBs may change.
- the interlace structure may be configured with different values depending on the RBS size (LBT bandwidth), SCS, and the number of RBs constituting one interlace.
- each resource pool (1010, 1020) has the interlace-based resource allocation method enabled.
- the number of RBs associated with one subchannel (interlace) may be determined differently depending on the SCS, as described above.
- each resource pool 1010 and 1020 may be set based on the associated M subchannel indexes based on the CRB. Therefore, the terminal can determine whether to apply the existing sidelink resource pool setting or the proposed interlace-based resource pool setting according to the “enable/disable” interlace-based resource pool setting for the resource pool for sidelink data transmission and reception on the unlicensed band.
- FIG. 11 may be a resource pool setting method indicating an interlace structure for a resource pool in a single RBS to which the present disclosure can be applied.
- the subchannel index may be set to 0 to M-1 based on the M RBs associated with each resource pool in the SL BWP of the unlicensed band.
- subchannel index 0 (1110) is CRB m, CRB m+M, CRB m+2M... Indicates
- subchannel index 1 (1120) is CRB m+1, CRB m+1+M, CRB m+1+2M... indicates one
- the subchannel index M-1 (1130) is CBR m+M-1, CRB m+2M-1, CRB m+3M-1...
- resource pool 0 (1140), as an interlace-based unlicensed band sidelink resource pool, may be composed of associated subchannel 0 and subchannel 1.
- resource pool 0 1140, as an interlace-based unlicensed band sidelink resource pool may be indicated based on an M-bit bitmap.
- resource pool 1 (1150), as an interlace-based unlicensed band sidelink resource pool may be composed of associated subchannels 2 and 4.
- resource pool 1 (1150), as an interlace-based unlicensed band sidelink resource pool may be indicated based on an M-bit bitmap.
- the parameter for whether to set the interlace-based sidelink resource pool can be set to “enable/disable.” At this time, if the parameter is “enable”, the sidelink resource pool can be configured through an interlace-based subchannel index that configures the sidelink resource pool based on an M-bit bitmap.
- the interlace/subchannel for configuring a resource pool may be indicated through a resource indication value (RIV) value.
- RIV resource indication value
- values corresponding to the starting interlace (m0) and the number of consecutive interlace indices (L, L>1) may be indicated, and may be expressed as Equation 6 below.
- an interlace-based resource pool may be set in a plurality of RBS for wideband operation.
- Figure 12 is a diagram showing a method of setting a resource pool in a plurality of RBS to which the present disclosure can be applied.
- a plurality of RBSs 1210, 1220, 1230, and 1240 may be set in one carrier band.
- a guard band may exist between each of the RBSs 1210, 1220, 1230, and 1240.
- Guardbands can be set in the carrier band based on the “intracellguardbandsperSCS” parameter as described above or based on requirements for RF and interference.
- intracellguardbandsperSCS indicates “guradBandSCS” indicating the SCS of the guard band, “intraCellGuradBand” indicating the guard band of the intracell, “startCRB” indicating the start CRB of the guard band, and the number of CRBs of the guard band. It may include “nrofCRB”, but may not be limited thereto.
- resource pool settings may require additional settings in whether to set an interlace-based resource pool and the M-bit bitmap. More specifically, the resource pool setting may be set by further considering at least one of the RBS index list and the number of RBS associated with the resource pool. That is, the resource pool set in the terminal may further consider at least one of the number of RBS and each RBS index.
- the bandwidth for performing LBT on a serving cell with a wideband in an unlicensed band may be considered.
- the bandwidth for performing LBT in the unlicensed band may correspond to an RBS, and a plurality of RBS may exist in one wide band.
- the resource pool settings are associated with the resource pool.
- each RBS It contains a bitmap of bits, and based on this, the index for each RBS can be indicated.
- the resource pool setting may include a 4-bit bitmap as an RBS index list.
- RBS#0 (1210) and RBS#1 (1220) may be indicated as RBSs associated with a resource pool based on a 4-bit bitmap, but this is only an example and is not limited to the above-described embodiment.
- the method of indicating the RBS index may directly indicate the RBS index rather than the bitmap.
- the RBS index may be indicated based on a resource indication value (RIV) value.
- RBS index is the starting RBS ( ) and the number of consecutive interlace indices ( ) can be indicated. here, may be a value greater than 1.
- the terminal can confirm that one or more RBS is set on the unlicensed carrier.
- RBS i.e., 4 LBT bandwidths
- 4 RBS may be set on an 80MHz (217RBs) carrier, but this is only an example for convenience of explanation and is not limited to the above-described embodiment.
- three guard bands can be set between each RBS (1210, 1220, 1230, and 1240) based on the RRC parameters (e.g. IntraCellGuardBandsPerSCS) in Table 10.
- Interlace-based resource pool settings may be applied within each RBS (1210, 1220, 1230, and 1240).
- an interlace-based resource pool can be set for each RBS. That is, an interlace-based resource pool can be set for each RBS regardless of RBS instructions.
- “1” in FIG. 12 may be a case where an interlace-based resource pool is set for each RBS. That is, RBS#0 (1210) and RBS#1 (1220) can be set as an interlace-based resource pool through a 4-bit bitmap based on the four RBSs (1210, 1220, 1230, and 1240).
- the interlace resource pool can be set identically for each RBS. That is, in FIG. 12, the interlace resource pool may be the same in each RBS of RBS#0 (1210) and RBS#1 (1220). As another example, the interlace resource pool can be set independently for each RBS. That is, in FIG. 12, the interlace resource pool in each RBS of RBS#0 (1210) and RBS#1 (1220) may be in a different form.
- interlace-based resource pool settings may be applied between RBSs.
- “2” in FIG. 12 may be a case where an interlace-based resource pool is set between RBS #0 (1210) and RBS #1 (1220) as indicated. That is, RBs associated with one subchannel may be RBs existing in RBS#0 (1210) and RBS#1 (1220).
- the terminal can receive instructions for the RBS index through upper layer signaling by setting a resource pool for the sidelink unlicensed band. As an example, in FIG. 12, the terminal may be instructed to receive an RBS index along with resource pool configuration information based on a 4-bit bitmap.
- RBS#0 (1210) and RBS#1 (1220) may be indicated based on RBS index information.
- the terminal can set the resources corresponding to the intersection along with the interlace-based subchannel configuration method in RBS #0 (1210) and RBS #1 (1220) as a sidelink unlicensed band resource pool.
- FIG. 13 is a diagram illustrating a method for instructing interlace-based resource pool settings on a plurality of RBS for wideband operation to which the present disclosure can be applied.
- one BWP BWP 1, 1310
- a plurality of RBSs (RBS#0 to RBS#3, 1321, 1322, 1323, and 1324) may be set in the activated BWP1 (1310).
- RBSs 1321, 1322, 1323, and 1324
- information on which RBS to set as the resource pool may be provided to the terminal based on signaling parameters.
- FIG. 13 is a diagram illustrating a method for instructing interlace-based resource pool settings on a plurality of RBS for wideband operation to which the present disclosure can be applied.
- FIG. 13 one BWP (BWP 1, 1310) can be set and activated in one carrier band.
- a plurality of RBSs (RBS#0 to RBS#3, 1321, 1322, 1323, and 1324) may be set in the
- all RBSs 1321, 1322, 1323, and 1324 set within one BWP 1310 may be set as one resource pool, but this is only an example and is limited to the above-described embodiment. It doesn't work.
- the terminal is set to one resource pool and can receive parameters related to the associated RBS index and parameters for the interlace-based subchannels within each RBS through upper layer signaling. Based on the above-mentioned parameters, the UE can configure RBSs related to the resource pool and subchannels within the RBS through upper layer signaling.
- FIG. 14 is a diagram illustrating a method for instructing interlace-based resource pool settings on a plurality of RBSs for wideband operation to which the present disclosure can be applied.
- multiple BWPs BWP 1 (1411), BWP 2 (1412)
- BWP 1 (1411) may be activated, but this is only an example and is not limited to the above-described embodiment.
- the terminal can receive resource pool setting information for RSBs (RBS#0 (1421), RBS#1 (1422)) associated with activated BWP 1 (1411) through higher layer signaling. That is, when RBSs 1421 and 1422 in BWP 1 (1411) are set on an unlicensed carrier, it may be indicated which RBS among the RBSs 1421 and 1422 is associated with the resource pool. As an example, the RBS associated with the resource pool may be indicated by a bitmap or based on RIV, as described above. As an example, in FIG.
- all of the RBSs 1421 and 1422 associated with BWP1 1411 may be indicated as a resource pool, and the final configuration may be specified through additional settings in the resource pool setting through the interlace-based subchannel index within each RBS. Resources that intersect can be set to the terminal as a resource pool.
- FIG. 15 is a diagram illustrating a method for instructing interlace-based resource pool settings on a plurality of RBSs for wideband operation to which the present disclosure can be applied.
- four SL BWPs (1511, 1512, 1513, and 1514) can be set in one carrier. At this time, only one of the four SL BWPs can be activated.
- one RBS (RBS#0, 1521) associated with SL BWP 1 (1511) may be indicated to the resource pool through upper layer signaling.
- RBS#0, 1521 associated with SL BWP 1 (1511) may be indicated to the resource pool through upper layer signaling.
- a parameter for indicating an additional RBS may not be needed.
- the resources that are finally crossed can be provided to the terminal by setting the resource pool.
- Figure 16 is a diagram showing a method of setting a sidelink resource pool for an unlicensed band to which the present disclosure can be applied.
- the terminal can receive a sidelink resource pool within a sidelink BWP configured for one carrier bandwidth through upper layer signaling.
- the sidelink resource pool may be a resource pool set in consideration of the unlicensed band.
- the terminal may receive first resource pool configuration information or second resource pool configuration information based on whether a plurality of RBSs are configured within the carrier bandwidth (S1620).
- the terminal can receive first resource pool configuration information.
- the terminal can receive the first resource pool configuration information and perform sidelink communication based on this.
- the first resource pool configuration information may include at least one of parameter information indicating whether an interlace-based sidelink resource pool is configured and interlace-based subchannel index information associated with the resource pool.
- parameter information indicating whether an interlace-based sidelink resource pool is set may be set to “enable” or “disable” to indicate whether an interlace-based sidelink resource pool is set.
- the interlace-based subchannel index associated with the resource pool may have M subchannel indexes based on SCS.
- M subchannel indices may be indicated based on an M-bit bitmap or RIV, as described above.
- the resource pool set in the sidelink unlicensed band may be set on an interlace basis based on a subchannel index (interlace index) or a unit index, as described above.
- the terminal may receive second resource pool configuration information (S1650). Thereafter, the terminal configures the sidelink based on the second resource pool configuration information. Communication can be performed (S1660). That is, when a plurality of RBSs for wideband operation are set in the terminal, the terminal can perform sidelink communication by receiving the second resource pool setting information.
- the second resource pool setting information may be resource pool setting information set in consideration of wideband operation.
- the second resource pool setting information may include the above-described first resource pool setting information. That is, the second resource pool configuration information may include at least one of parameter information indicating whether an interlace-based sidelink resource pool is configured and interlace-based subchannel index information associated with the resource pool.
- information indicating whether an interlace-based sidelink resource pool is set may be set to “enable” or “disable” to indicate whether an interlace-based sidelink resource pool is set.
- the interlace-based subchannel index associated with the resource pool may have M subchannel indexes based on SCS.
- M subchannel indices may be indicated based on an M-bit bitmap or RIV, as described above.
- the second resource pool setting information may further include at least one of an RBS index list and RBS number information associated with the resource pool.
- the RBS index list may be indicated based on a bitmap or RIV containing bits corresponding to the number of RBS set in the carrier bandwidth, as described above.
- an interlace-based resource pool may be set for each RBS based on the second resource pool setting information. For example, when an interlace-based resource pool is set for each RBS, the same interlace (subchannel index) or RB unit index-based resource pool may be set for each RBS. As another example, when an interlace-based resource pool is set for each RBS, a different interlace (subchannel index) or RB unit index-based resource pool may be set for each RBS, and is not limited to a specific embodiment.
- an interlace (subchannel index) or RB-unit index-based resource pool may be set between RBSs (i.e., for each one or more RBS). That is, an interlace-based resource pool can be set in a plurality of RBSs and can be indicated based on a subchannel index.
- the terminal can receive configuration from the base station of the RBS associated with the resource pool and the subchannels within the RBS associated with the resource pool.
- Figure 17 is a diagram showing a base station device and a terminal device to which the present disclosure can be applied.
- the base station device 1700 may include a processor 1720, an antenna unit 1712, a transceiver 1714, and a memory 1716.
- the processor 1720 performs baseband-related signal processing and may include an upper layer processing unit 1730 and a physical layer processing unit 1740.
- the upper layer processing unit 1730 may process operations of a MAC (Medium Access Control) layer, RRC (Radio Resource Control) layer, or higher layers.
- the physical layer processing unit 1740 may process physical (PHY) layer operations (e.g., uplink reception signal processing, downlink transmission signal processing).
- the processor 1720 may also control the overall operation of the base station device 1700.
- the antenna unit 1712 may include one or more physical antennas, and when it includes multiple antennas, it may support Multiple Input Multiple Output (MIMO) transmission and reception. Additionally, beamforming may be supported.
- MIMO Multiple Input Multiple Output
- the memory 1716 may store information processed by the processor 1720, software related to the operation of the base station device 1700, an operating system, and applications, and may also include components such as buffers.
- the processor 1720 of the base station 1700 may be configured to implement the operations of the base station in the embodiments described in the present invention.
- the terminal device 1750 may include a processor 1770, an antenna unit 1762, a transceiver 1764, and a memory 1766.
- the terminal device 1750 can communicate with the base station device 1700.
- the terminal device 1750 can perform sidelink communication with another terminal device. That is, the terminal device 1750 of the present invention refers to a device that can communicate with at least one of the base station device 1700 and other terminal devices, and is not limited to communication with a specific device.
- the processor 1770 performs baseband-related signal processing and may include an upper layer processing unit 1780 and a physical layer processing unit 1790.
- the upper layer processing unit 1780 can process operations of the MAC layer, RRC layer, or higher layers.
- the physical layer processing unit 1790 may process PHY layer operations (e.g., downlink received signal processing, uplink transmitted signal processing).
- the processor 1770 may also control the overall operation of the terminal device 1750.
- the antenna unit 1762 may include one or more physical antennas, and may support MIMO transmission and reception when it includes a plurality of antennas. Additionally, beamforming may be supported.
- the memory 1766 may store information processed by the processor 1770, software related to the operation of the terminal device 1750, an operating system, applications, etc., and may also include components such as buffers.
- the terminal device 1750 according to an example of the present invention may be associated with a vehicle. As an example, terminal device 1750 may be integrated into, located in, or on a vehicle. Additionally, the terminal device 1750 according to the present invention may be the vehicle itself. Additionally, the terminal device 1750 according to the present invention may be at least one of a wearable terminal, AV/VR, IoT terminal, robot terminal, and public safety terminal.
- the terminal device 1750 to which the present invention can be applied is any type of device that supports interactive services using side links for services such as Internet access, service performance, navigation, real-time information, autonomous driving, and safety and risk diagnosis. It may also include communication devices. Additionally, AR/VR devices capable of sidelink operation or any type of communication device that becomes a sensor and performs a relay operation may be included.
- vehicles to which the present invention is applied may include autonomous vehicles, semi-autonomous vehicles, non-autonomous vehicles, etc.
- the terminal device 1750 according to an example of the present invention is described as being associated with a vehicle, but one or more of the UEs may not be associated with the vehicle. This is an example and should not be construed to limit application of the present invention to the described example.
- the terminal device 1750 may also include various types of communication devices capable of performing cooperation to support interactive services using sidelinks.
- the terminal device 1750 may also include various types of communication devices capable of performing cooperation to support interactive services using sidelinks.
- the terminal device 1750 may also include various types of communication devices capable of performing cooperation to support interactive services using sidelinks.
- the terminal device 1750 not only can the terminal device 1750 directly support an interactive service using a sidelink, but it can also be used as a cooperative device to support an interactive service using a sidelink.
- the terminal device 1750 when the terminal device 1750 according to an example of the present invention performs sidelink communication, the terminal device 1750 may use sidelink resources within the sidelink BWP set in one carrier bandwidth through upper layer signaling. You can set up a pool.
- the sidelink resource pool may be a resource pool set in consideration of the unlicensed band.
- the terminal device 1750 may receive first resource pool configuration information or second resource pool configuration information based on whether a plurality of RBSs are configured within the carrier bandwidth.
- the terminal device 1750 can receive first resource pool setting information.
- the terminal device 1750 can receive first resource pool configuration information and perform sidelink communication based on this.
- the first resource pool configuration information may include at least one of parameter information indicating whether an interlace-based sidelink resource pool is configured and interlace-based subchannel index information associated with the resource pool.
- information indicating whether an interlace-based sidelink resource pool is set may be set to “enable” or “disable” to indicate whether an interlace-based sidelink resource pool is set.
- the interlace-based subchannel index associated with the resource pool may have M subchannel indexes based on SCS.
- M subchannel indices may be indicated based on an M-bit bitmap or RIV, as described above.
- the resource pool set in the sidelink unlicensed band may be set on an interlace basis based on a subchannel index (interlace index) or a unit index, as described above.
- the terminal device 1750 may receive second resource pool setting information. Afterwards, the terminal device 1750 may perform sidelink communication based on the second resource pool setting information. That is, when a plurality of RBSs for wideband operation are configured in the terminal, the terminal device 1750 can perform sidelink communication by receiving the second resource pool setting information.
- the second resource pool setting information may be resource pool setting information set in consideration of wideband operation.
- the second resource pool setting information may include the above-described first resource pool setting information. That is, the second resource pool configuration information may include at least one of parameter information indicating whether an interlace-based sidelink resource pool is configured and interlace-based subchannel index information associated with the resource pool.
- information indicating whether an interlace-based sidelink resource pool is set may be set to “enable” or “disable” to indicate whether an interlace-based sidelink resource pool is set.
- the interlace-based subchannel index associated with the resource pool may have M subchannel indexes based on SCS.
- M subchannel indices may be indicated based on an M-bit bitmap or RIV, as described above.
- the second resource pool setting information may further include at least one of an RBS index list and RBS number information associated with the resource pool.
- the RBS index list may be indicated based on a bitmap or RIV containing bits corresponding to the number of RBS set in the carrier bandwidth, as described above.
- an interlace-based resource pool may be set for each RBS based on the second resource pool setting information. For example, when an interlace-based resource pool is set for each RBS, the same interlace (subchannel index) or RB unit index-based resource pool may be set for each RBS. As another example, when an interlace-based resource pool is set for each RBS, a different interlace (subchannel index) or RB unit index-based resource pool may be set for each RBS, and is not limited to a specific embodiment.
- an interlace (subchannel index) or RB unit index-based resource pool may be set between RBSs (i.e., for each one or more RBS). That is, an interlace-based resource pool can be set in a plurality of RBSs and can be indicated based on a subchannel index.
- the terminal device 1750 can receive configuration of the RBS associated with the resource pool and the subchannels within the RBS associated with the resource pool from the base station.
- various embodiments of the present disclosure may be implemented by hardware, firmware, software, or a combination thereof.
- one or more ASICs Application Specific Integrated Circuits
- DSPs Digital Signal Processors
- DSPDs Digital Signal Processing Devices
- PLDs Programmable Logic Devices
- FPGAs Field Programmable Gate Arrays
- general purpose It can be implemented by a processor (general processor), controller, microcontroller, microprocessor, etc.
- the scope of the present disclosure is software or machine-executable instructions (e.g., operating system, application, firmware, program, etc.) that cause operations according to the methods of various embodiments to be executed on a device or computer, and such software or It includes non-transitory computer-readable medium in which instructions, etc. are stored and can be executed on a device or computer.
- software or machine-executable instructions e.g., operating system, application, firmware, program, etc.
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Abstract
Description
Claims (6)
- 무선 통신 시스템에서 단말에 사이드링크 자원 풀을 설정하는 방법에 있어서,상기 단말이 기지국으로부터 상위레이어 시그널링에 기초하여 자원 풀 설정 정보를 수신하는 단계;상기 자원 풀 설정 정보에 기초하여 다른 단말과 사이드링크 통신을 수행하는 단계;를 포함하되,상기 자원 풀 설정 정보는 비면허 대역의 사이드링크 자원 풀 설정에 기초한 정보인, 사이드링크 자원 풀 설정 방법.
- 제 1 항에 있어서,상기 단말이 하나의 캐리어 대역폭에서 하나의 사이드링크 대역폭(sidelink bandwidth part, SL BWP)에 기초하여 하나의 RBS(resource block set)에서 상기 사이드링크 통신을 수행하는 경우, 상기 단말은 제 1 자원 풀 설정 정보에 기초하여 상기 사이드링크 통신을 수행하는, 사이드링크 자원 풀 설정 방법.
- 제 2 항에 있어서,상기 제 1 자원 풀 설정 정보는 인터레이스 기반 사이드링크 자원 풀 설정 여부에 대한 정보 및 자원 풀에 연관된 인터레이스 기반 서브채널 인덱스 정보 중 적어도 어느 하나를 포함하는, 사이드링크 자원 풀 설정 방법.
- 제 1 항에 있어서,상기 단말이 하나의 캐리어 대역폭에서 하나의 사이드링크 대역폭(sidelink bandwidth part, SL BWP)에 기초하여 복수의 RBS(resource block set)에서 상기 사이드링크 통신을 수행하는 경우, 상기 단말은 제 2 자원 풀 설정 정보에 기초하여 상기 사이드링크 통신을 수행하는, 사이드링크 자원 풀 설정 방법.
- 제 4 항에 있어서,상기 제 2 자원 풀 설정 정보는 인터레이스 기반 사이드링크 자원 풀 설정 여부에 대한 정보 및 자원 풀에 연관된 인터레이스 기반 서브채널 인덱스 정보 중 적어도 어느 하나를 포함하는, 사이드링크 자원 풀 설정 방법.
- 제 5항에 있어서,상기 제 2 자원 풀 설정 정보는 자원 풀에 연관된 RBS 인덱스 리스트 정보 및 RBS 수 정보 중 적어도 어느 하나를 더 포함하는, 사이드링크 자원 풀 설정 방법.
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|---|---|---|---|
| CN202380035342.4A CN119138066A (zh) | 2022-04-21 | 2023-04-19 | 在无线通信系统中的执行侧链路通信的方法及设备 |
| EP23792178.8A EP4514006A4 (en) | 2022-04-21 | 2023-04-19 | METHOD AND DEVICE FOR IMPLEMENTING LATERAL LINK COMMUNICATION IN A WIRELESS COMMUNICATION SYSTEM |
| JP2024561682A JP2025513318A (ja) | 2022-04-21 | 2023-04-19 | サイドリンク通信を実行する方法 |
| US18/921,680 US20250048339A1 (en) | 2022-04-21 | 2024-10-21 | Method and device for performing sidelink communication in wireless communication system |
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| KR10-2022-0049388 | 2022-04-21 | ||
| KR1020220049388A KR20230149992A (ko) | 2022-04-21 | 2022-04-21 | 무선 통신 시스템에서 사이드링크 통신을 수행하는 방법 및 장치 |
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| KR20200050821A (ko) * | 2018-11-02 | 2020-05-12 | 주식회사 아이티엘 | Nr 시스템에서 사이드링크를 위한 자원 풀 구성 방법 및 장치 |
| US20200236656A1 (en) * | 2019-01-21 | 2020-07-23 | Huawei Technologies Co., Ltd. | Method and apparatus for sidelink transmission and resource allocation |
| US20220060913A1 (en) * | 2019-05-10 | 2022-02-24 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Method for configuring resource pool, terminal and network device |
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| CN115462147B (zh) * | 2020-05-02 | 2024-11-19 | 高通股份有限公司 | 基于fbe的许可辅助侧链路接入的方法、装置和程序产品 |
| CN115589790B (zh) * | 2020-05-29 | 2026-04-03 | 高通股份有限公司 | 用于无线通信的方法、装置和非暂时性计算机可读介质 |
| US20230309117A1 (en) * | 2020-10-09 | 2023-09-28 | Qualcomm Incorporated | Sidelink feedback channel resource mapping in unlicensed spectrum |
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- 2023-04-19 WO PCT/KR2023/005310 patent/WO2023204604A1/ko not_active Ceased
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| KR20200050821A (ko) * | 2018-11-02 | 2020-05-12 | 주식회사 아이티엘 | Nr 시스템에서 사이드링크를 위한 자원 풀 구성 방법 및 장치 |
| US20200236656A1 (en) * | 2019-01-21 | 2020-07-23 | Huawei Technologies Co., Ltd. | Method and apparatus for sidelink transmission and resource allocation |
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| CN119138066A (zh) | 2024-12-13 |
| JP2025513318A (ja) | 2025-04-24 |
| EP4514006A1 (en) | 2025-02-26 |
| US20250048339A1 (en) | 2025-02-06 |
| EP4514006A4 (en) | 2026-04-22 |
| KR20230149992A (ko) | 2023-10-30 |
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