WO2025005707A1 - 빔을 기반으로 통신을 수행하는 방법 및 장치 - Google Patents
빔을 기반으로 통신을 수행하는 방법 및 장치 Download PDFInfo
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- WO2025005707A1 WO2025005707A1 PCT/KR2024/009051 KR2024009051W WO2025005707A1 WO 2025005707 A1 WO2025005707 A1 WO 2025005707A1 KR 2024009051 W KR2024009051 W KR 2024009051W WO 2025005707 A1 WO2025005707 A1 WO 2025005707A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/26—Resource reservation
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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
- H04W72/04—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
- H04W72/30—Resource management for broadcast services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
Definitions
- the 6G (wireless communication) system aims to achieve (i) very high data rates per device, (ii) a very large number of connected devices, (iii) global connectivity, (iv) very low latency, (v) low energy consumption of battery-free IoT (internet of things) devices, (vi) ultra-reliable connectivity, and (vii) connected intelligence with machine learning capabilities.
- the vision of the 6G system can be divided into four aspects: intelligent connectivity, deep connectivity, holographic connectivity, and ubiquitous connectivity, and the 6G system can satisfy the requirements as shown in Table 1 below.
- Table 1 can represent an example of the requirements of a 6G system.
- a method for a first device to perform wireless communication may be provided.
- the method may include: obtaining information about a first resource set associated with a first type beam; obtaining information about a second resource set associated with a second type beam; and transmitting a control signal to a second device for reserving at least one resource in the second resource set based on the first resource set.
- the first type beam may include a beam of a non-directional type
- the second type beam may include a beam of a directional type.
- a first device configured to perform wireless communication
- the first device may include at least one transceiver; at least one processor; and at least one memory coupled to the at least one processor and storing instructions.
- the instructions based on being executed by the at least one processor, may cause the first device to: obtain information about a first set of resources associated with a first type of beam; obtain information about a second set of resources associated with a second type of beam; and transmit a control signal to the second device for reserving at least one resource in the second set of resources based on the first set of resources.
- the first type of beam may include a beam of a non-directional type
- the second type of beam may include a beam of a directional type.
- a processing device configured to control a first device.
- the processing device may include at least one processor; and at least one memory coupled to the at least one processor and storing instructions.
- the instructions based on being executed by the at least one processor, may cause the first device to: obtain information about a first set of resources associated with a first type beam; obtain information about a second set of resources associated with a second type beam; and transmit a control signal to the second device for reserving at least one resource in the second set of resources based on the first set of resources.
- the first type of beam may include a beam of a non-directional type
- the second type of beam may include a beam of a directional type.
- a non-transitory computer-readable storage medium having instructions recorded thereon may be provided.
- the instructions when executed, may cause a first device to: obtain information about a first set of resources associated with a first type beam; obtain information about a second set of resources associated with a second type beam; and transmit a control signal to the second device for reserving at least one resource in the second set of resources based on the first set of resources.
- the first type of beam may include a beam of a non-directional type
- the second type of beam may include a beam of a directional type.
- FIG. 1 illustrates a communication structure that can be provided in a 6G system according to one embodiment of the present disclosure.
- FIG. 2 illustrates an electromagnetic spectrum according to one embodiment of the present disclosure.
- FIG. 3 illustrates an example of a typical scenario of an NTN based on a transparent payload, according to one embodiment of the present disclosure.
- FIG. 4 illustrates an example of a typical scenario for an NTN based on a regenerative payload, according to one embodiment of the present disclosure.
- FIG. 5 illustrates an example of a sensing operation according to one embodiment of the present disclosure.
- FIG. 6 illustrates a slot structure of a frame according to one embodiment of the present disclosure.
- FIG. 7 illustrates an example of a BWP according to one embodiment of the present disclosure.
- FIG. 8 illustrates a procedure for a terminal to perform V2X or SL communication according to a resource allocation mode according to one embodiment of the present disclosure.
- FIG. 9 illustrates a resource unit for measuring channel busy ratio (CBR) according to one embodiment of the present disclosure.
- FIG. 11 illustrates a first resource set to which a first type beam is applied and a second resource set to which a second type beam is applied according to one embodiment of the present disclosure.
- FIG. 12 illustrates beam measurement and/or beam reporting based on a first resource set and/or a second resource set, according to one embodiment of the present disclosure.
- CDMA code division multiple access
- FDMA frequency division multiple access
- TDMA time division multiple access
- OFDMA orthogonal frequency division multiple access
- SC-FDMA single carrier frequency division multiple access
- CDMA can be implemented with wireless technologies such as UTRA (universal terrestrial radio access) or CDMA2000.
- TDMA can be implemented with wireless technologies such as GSM (global system for mobile communications)/GPRS (general packet radio service)/EDGE (enhanced data rates for GSM evolution).
- GSM global system for mobile communications
- GPRS general packet radio service
- EDGE enhanced data rates for GSM evolution
- OFDMA can be implemented with wireless technologies such as IEEE (institute of electrical and electronics engineers) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, E-UTRA (evolved UTRA), LTE (long term evolution), and 5G NR.
- IEEE institute of electrical and electronics engineers
- Wi-Fi IEEE 802.11
- WiMAX IEEE 802.16
- WiMAX IEEE 802.16
- IEEE 802-20 IEEE 802-20
- E-UTRA evolved UTRA
- LTE long term evolution
- 5G NR 5G NR
- the technology proposed in this specification can be implemented with 6G wireless technology and can be applied to various 6G systems.
- the 6G system can have key factors such as enhanced mobile broadband (eMBB), ultra-reliable low latency communications (URLLC), massive machine-type communication (mMTC), artificial intelligence (AI) integrated communication, tactile internet, high throughput, high network capacity, high energy efficiency, low backhaul and access network congestion, and enhanced data security.
- eMBB enhanced mobile broadband
- URLLC ultra-reliable low latency communications
- mMTC massive machine-type communication
- AI artificial intelligence integrated communication
- tactile internet high throughput
- high network capacity high energy efficiency
- low backhaul and access network congestion and enhanced data security.
- FIG. 1 illustrates a communication structure that can be provided in a 6G system according to one embodiment of the present disclosure.
- the embodiment of FIG. 1 can be combined with various embodiments of the present disclosure.
- New network characteristics in 6G could include:
- AI can be applied at each stage of the communication process (or at each stage of signal processing, as described below).
- High-precision localization (or location-based services) through communications is one of the functions of 6G wireless communication systems. Therefore, radar systems will be integrated with 6G networks.
- AI Artificial Intelligence: Introducing AI into communications can simplify and improve real-time data transmission. AI can use a lot of analytics to determine how complex target tasks are performed. In other words, AI can increase efficiency and reduce processing delays. Time-consuming tasks such as handover, network selection, and resource scheduling can be performed instantly using AI. AI can also play a significant role in M2M, machine-to-human, and human-to-machine communications. AI can also be a rapid communication in Brain Computer Interface (BCI). AI-based communication systems can be supported by metamaterials, intelligent structures, intelligent networks, intelligent devices, intelligent cognitive radios, self-sustaining wireless networks, and machine learning.
- BCI Brain Computer Interface
- THz waves also known as sub-millimeter waves, generally refer to a frequency band between 0.1 THz and 10 THz with a corresponding wavelength ranging from 0.03 mm to 3 mm.
- the 100 GHz to 300 GHz band range (Sub THz band) is considered to be a major part of the THz band for cellular communications. Adding the Sub-THz band to the mmWave band will increase the capacity of 6G cellular communications.
- 300 GHz to 3 THz is in the far infrared (IR) frequency band.
- FSO backhaul network Free space optical transmission backhaul network
- UAVs or drones will be a crucial element in 6G wireless communications.
- high-speed data wireless connectivity can be provided using UAV technology.
- the base station (BS) entity can be installed on the UAV to provide cellular connectivity.
- UAVs may have certain features not found in fixed BS infrastructure such as easy deployment, robust line-of-sight links, and freedom of movement with controlled mobility.
- BS base station
- UAVs may have certain features not found in fixed BS infrastructure such as easy deployment, robust line-of-sight links, and freedom of movement with controlled mobility.
- UAVs can easily handle such situations.
- UAVs will be a new paradigm in wireless communications. This technology facilitates three basic requirements of wireless networks namely eMBB, URLLC, and mMTC.
- UAVs can also support several purposes such as enhancing network connectivity, fire detection, disaster emergency services, security and surveillance, pollution monitoring, parking monitoring, and
- AAM is a higher concept than urban air mobility (UAM), which is an air transportation method that can be used in urban areas, and can refer to a means of transportation that includes movement between regional hubs as well as urban areas.
- UAM urban air mobility
- V2X vehicle to everything
- V2I vehicle to infrastructure
- NTN may represent a network or network segment that uses RF (radio frequency) resources mounted on a satellite (or unmanned aerial system (UAS) platform).
- FIG. 3 illustrates an example of a typical scenario of an NTN based on a transparent payload according to an embodiment of the present disclosure.
- FIG. 4 illustrates an example of a typical scenario of an NTN based on a regenerative payload according to an embodiment of the present disclosure. The embodiment of FIG. 3 or FIG. 4 may be combined with various embodiments of the present disclosure.
- a satellite (or UAS platform) may create a service link with a UE.
- the satellite (or UAS platform) may be connected to a gateway via a feeder link.
- the satellite may be connected to a data network via the gateway.
- a beam foot print may mean an area where a signal transmitted by a satellite can be received.
- a satellite (or UAS platform) can create a service link with a UE.
- a satellite (or UAS platform) associated with a UE can be associated with another satellite (or UAS platform) via an inter-satellite link (ISL).
- the other satellite (or UAS platform) can be associated with a gateway via a feeder link.
- a satellite can be associated with a data network via another satellite and a gateway based on a regenerative payload. If there is no ISL between a satellite and another satellite, a feeder link between the satellite and the gateway may be required.
- a satellite (or UAS platform) can implement a transparent or regenerative (with on board processing) payload.
- a satellite (or UAS platform) may generate multiple beams over a given service area depending on the field of view of the satellite (or UAS platform).
- the field of view of the satellite (or UAS platform) may vary depending on the onboard antenna diagram and the minimum elevation angle.
- a transparent payload may include radio frequency filtering, frequency conversion, and amplification. Thus, the waveform signal repeated by the payload may not be altered.
- a regenerative payload may include radio frequency filtering, frequency conversion and amplification, demodulation/decoding, switching and/or routing, and coding/modulation.
- a regenerative payload may be substantially identical to onboarding all or part of a base station function onto the satellite (or UAS platform).
- Wireless sensing is a technology that uses radio frequencies to obtain information about the environment and/or the characteristics of objects in the environment by detecting the instantaneous linear velocity, angle, distance (range), etc. of an object. Since the radio frequency sensing function does not require a connection to the object through a device in the network, it can provide a service for object positioning without a device. The ability to obtain range, velocity, and angle information from radio frequency signals can provide a wide range of new functions such as various object detection, object recognition (e.g., vehicles, humans, animals, UAVs), and high-precision localization, tracking, and activity recognition.
- object recognition e.g., vehicles, humans, animals, UAVs
- Wireless sensing services can provide information to various industries (e.g., unmanned aerial vehicles, smart homes, V2X, factories, railways, public safety, etc.) that enable applications such as intruder detection, assisted vehicle steering and navigation, trajectory tracking, collision avoidance, traffic management, health and traffic management, etc.
- wireless sensing can use non-3GPP type sensors (e.g., radar, camera) to additionally support 3GPP-based sensing.
- non-3GPP type sensors e.g., radar, camera
- the operation of a wireless sensing service i.e., a sensing operation, may depend on the transmission, reflection, and scattering processing of wireless sensing signals. Therefore, wireless sensing may provide an opportunity to enhance existing communication systems from a communication network to a wireless communication and sensing network.
- FIG. 5 illustrates an example of a sensing operation according to an embodiment of the present disclosure.
- the embodiment of FIG. 5 may be combined with various embodiments of the present disclosure.
- (a) of FIG. 5 illustrates an example of sensing using a sensing receiver and a sensing transmitter at the same location (e.g., monostatic sensing)
- (b) of FIG. 5 illustrates an example of sensing using a separated sensing receiver and a sensing transmitter (e.g., bistatic sensing).
- the layers of the Radio Interface Protocol between the terminal and the network can be divided into L1 (layer 1), L2 (layer 2), and L3 (layer 3) based on the three lower layers of the Open System Interconnection (OSI) standard model, which is widely known in communication systems.
- the physical layer belonging to the first layer provides an information transfer service using a physical channel
- the RRC (Radio Resource Control) layer located in the third layer controls radio resources between the terminal and the network.
- the RRC layer exchanges RRC messages between the terminal and the base station.
- the physical layer provides information transmission services to the upper layer using physical channels.
- the physical layer is connected to the upper layer, the MAC (Medium Access Control) layer, through a transport channel. Data moves between the MAC layer and the physical layer through the transport channel. Transport channels are classified according to how and with what characteristics data is transmitted through the wireless interface.
- MAC Medium Access Control
- the physical channel can be modulated using an OFDM (Orthogonal Frequency Division Multiplexing) method and utilizes time and frequency as radio resources.
- OFDM Orthogonal Frequency Division Multiplexing
- the MAC layer provides services to the upper layer, the radio link control (RLC) layer, through logical channels.
- the MAC layer provides a mapping function from multiple logical channels to multiple transport channels.
- the MAC layer provides a logical channel multiplexing function by mapping multiple logical channels to a single transport channel.
- the MAC sublayer provides data transmission services on logical channels.
- the RLC layer performs concatenation, segmentation, and reassembly of RLC SDUs (Service Data Units).
- RLC SDUs Service Data Units
- the RLC layer provides three operation modes: Transparent Mode (TM), Unacknowledged Mode (UM), and Acknowledged Mode (AM).
- TM Transparent Mode
- UM Unacknowledged Mode
- AM Acknowledged Mode
- AM RLC provides error correction through automatic repeat request (ARQ).
- the RRC (Radio Resource Control) layer is defined only in the control plane.
- the RRC layer is responsible for controlling logical channels, transport channels, and physical channels in relation to the configuration, re-configuration, and release of radio bearers.
- RB refers to a logical path provided by the first layer (physical layer or PHY layer) and the second layer (MAC layer, RLC layer, PDCP (Packet Data Convergence Protocol) layer, and SDAP (Service Data Adaptation Protocol) layer) for data transmission between the terminal and the network.
- the functions of the PDCP layer in the user plane include forwarding of user data, header compression, and ciphering.
- the functions of the PDCP layer in the control plane include forwarding of control plane data and ciphering/integrity protection.
- the SDAP (Service Data Adaptation Protocol) layer is defined only in the user plane.
- the SDAP layer performs mapping between QoS flows and data radio bearers, marking QoS flow identifiers (IDs) in downlink and uplink packets, etc.
- Establishing an RB means the process of specifying the characteristics of the radio protocol layer and channel to provide a specific service, and setting each specific parameter and operation method.
- RB can be divided into two types: SRB (Signaling Radio Bearer) and DRB (Data Radio Bearer).
- SRB is used as a channel to transmit RRC messages in the control plane
- DRB is used as a channel to transmit user data in the user plane.
- the terminal When an RRC connection is established between the RRC layer of the terminal and the RRC layer of the base station, the terminal is in the RRC_CONNECTED state, otherwise it is in the RRC_IDLE state.
- RRC_CONNECTED When an RRC connection is established between the RRC layer of the terminal and the RRC layer of the base station, the terminal is in the RRC_CONNECTED state, otherwise it is in the RRC_IDLE state.
- an RRC_INACTIVE state is additionally defined, and a terminal in the RRC_INACTIVE state can release the connection with the base station while maintaining the connection with the core network.
- Downlink transmission channels that transmit data from a network to a terminal include the BCH (Broadcast Channel) that transmits system information, and the downlink SCH (Shared Channel) that transmits user traffic or control messages. Traffic or control messages of downlink multicast or broadcast services may be transmitted through the downlink SCH, or may be transmitted through a separate downlink MCH (Multicast Channel). Meanwhile, uplink transmission channels that transmit data from a terminal to a network include the RACH (Random Access Channel) that transmits initial control messages, and the uplink SCH (Shared Channel) that transmits user traffic or control messages.
- RACH Random Access Channel
- Time resource allocation - 5 bits if the value of the upper layer parameter sl-MaxNumPerReserve is set to 2; otherwise, 9 bits if the value of the upper layer parameter sl-MaxNumPerReserve is set to 3.
- Additional MCS table indicator - 1 bit if one MCS table is set by the upper layer parameter sl-Additional-MCS-Table; 2 bits if two MCS tables are set by the upper layer parameter sl- Additional-MCS-Table; otherwise 0 bits
- HARQ-ACK information when HARQ-ACK information includes ACK or NACK, or when HARQ-ACK information includes only NACK, or when there is no feedback of HARQ-ACK information, SCI format 2-A is used for decoding PSSCH.
- Cast type indicator value Cast type 00 Broadcast 01 Groupcast when HARQ-ACK information contains ACK or NACK 10 Unicast 11 Groupcast when HARQ-ACK information contains only NACK
- SCI format 2-B is used for decoding PSSCH.
- the first terminal can receive the PSFCH.
- the first terminal and the second terminal can determine the PSFCH resource, and the second terminal can transmit the HARQ feedback to the first terminal using the PSFCH resource.
- the first terminal may transmit SL HARQ feedback to the base station through PUCCH and/or PUSCH.
- SL HARQ feedback can be enabled for unicast.
- SL HARQ feedback can be enabled for groupcast.
- two HARQ feedback options can be supported for groupcast.
- Groupcast option 1 If the receiving terminal fails to decode a transport block related to the PSCCH after the receiving terminal decodes the PSCCH targeting the receiving terminal, the receiving terminal may transmit a negative acknowledgement (NACK) to the transmitting terminal through the PSFCH. On the other hand, if the receiving terminal decodes the PSCCH targeting the receiving terminal and the receiving terminal successfully decodes the transport block related to the PSCCH, the receiving terminal may not transmit a positive acknowledgement (ACK) to the transmitting terminal.
- NACK negative acknowledgement
- Groupcast option 2 If the receiving terminal fails to decode a transport block related to the PSCCH after the receiving terminal decodes the PSCCH targeting the receiving terminal, the receiving terminal can transmit a NACK to the transmitting terminal through the PSFCH. Then, if the receiving terminal decodes the PSCCH targeting the receiving terminal and the receiving terminal successfully decodes the transport block related to the PSCCH, the receiving terminal can transmit an ACK to the transmitting terminal through the PSFCH.
- the UE may be instructed by the SCI format to schedule PSSCH reception on one or more subchannels from N PSSCH subchs to transmit a PSFCH containing HARQ-ACK information in response to a PSSCH reception.
- the UE provides HARQ-ACK information containing ACK or NACK, or only NACK.
- the UE may be instructed by higher layers not to transmit PSFCH in response to receiving a PSSCH.
- a UE receives a PSSCH from a resource pool and the HARQ Feedback Enable/Deactivate Indicator field included in the associated SCI Format 2-A or SCI Format 2-B has a value of 1, the UE provides HARQ-ACK information via a PSFCH transmission from the resource pool.
- the UE transmits the PSFCH in a first slot, wherein the first slot includes a PSFCH resource and is a slot after the minimum number of slots provided by sl-MinTimeGapPSFCH-r16 of the resource pool after the last slot of the PSSCH reception.
- the UE receives a set of PRBs M PSFCH PRB,set for PSFCH transmission in the PRBs of the resource pool by sl-PSFCH-RB-Set-r16.
- the UE allocates [(i+j N PSFCH PSSCH ) M PSFCH subch,slot , (i+1+j N PSFCH PSSCH ) M PSFCH subch,slot -1] PRBs from the M PRB,set PSFCH PRBs for slot i and subchannel j among the PSSCH slots associated with the PSFCH slots.
- M PSFCH subch,slot M PSFCH PRB,set / (N subch ⁇ N PSFCH PSSCH ), 0 ⁇ i ⁇ N PSFCH PSSCH , 0 ⁇ j ⁇ N subch , and the allocation starts in ascending order of i and continues in ascending order of j.
- the UE expects that M PSFCH PRB,set is a multiple of N subch ⁇ N PSFCH PSSCH .
- N PSFCH type 1 and M PSFCH subch,slot PRB is associated with the start subchannel of the corresponding PSSCH,
- N PSFCH type N PSSCH subch and N PSSCH subch ⁇ M PSFCH subch,slot PRB is associated with one or more subchannels among the N PSSCH subch subchannels of the corresponding PSSCH.
- PSFCH resources are first indexed in ascending order of PRB index among N PSFCH type ⁇ M PSFCH subch,slot PRBs, and then indexed in ascending order of cyclic shift pair index among N PSFCH CS cyclic shift pairs.
- the UE determines the index of the PSFCH resource for PSFCH transmission in response to the PSSCH reception as (P ID + M ID ) mod R PSFCH PRB,CS , where P ID is a physical layer source ID provided by SCI format 2-A or 2-B for scheduling the PSSCH reception, and M ID is an ID of the UE receiving the PSSCH indicated by upper layers if the UE detects SCI format 2-A with Cast Type Indicator field value "01", otherwise M ID is 0.
- the UE determines the m 0 value for calculating the cyclic shift ⁇ value from the N PSFCH CS and the cyclic shift pair index corresponding to the PSFCH resource index using Table 4.
- Circular shift pair index 5 1 0 - - - - - 2 0 3 - - - - 3 0 2 4 - - - 6 0 1 2 3 4 5
- the UE applies one cyclic shift from among the cyclic shift pairs to the sequence used for PSFCH transmission.
- FIG. 9 illustrates a resource unit for measuring channel busy ratio (CBR) according to an embodiment of the present disclosure.
- CBR channel busy ratio
- CBR may mean the number of subchannels in which the RSSI (Received Signal Strength Indicator) measurement result value is higher than a preset threshold value when the terminal measures the RSSI per subchannel for a specific section (e.g., 100 ms).
- CBR may mean the ratio of subchannels in which the RSSI measurement result value is higher than a preset threshold value among the subchannels in the specific section. For example, in the embodiment of FIG. 9, if it is assumed that the hatched subchannels are subchannels in which the values are higher than the preset threshold value, CBR may mean the ratio of the hatched subchannels for a 100 ms section. Additionally, the terminal may report the CBR to the base station.
- the terminal can perform one CBR measurement for one resource pool.
- PSFCH resources are configured or configured in advance, the PSFCH resources can be excluded from the CBR measurement.
- the terminal may measure the channel occupancy ratio (CR). Specifically, the terminal may measure the CBR, and the terminal may determine the maximum value (CRlimitk) of the channel occupancy ratio (Channel occupancy ratio k, CRk) that can be occupied by traffic corresponding to each priority (e.g., k) according to the CBR. For example, the terminal may derive the maximum value (CRlimitk) of the channel occupancy for each priority of traffic based on a table of predetermined CBR measurement values. For example, in the case of traffic with a relatively high priority, the terminal may derive a relatively large maximum value of the channel occupancy.
- CR channel occupancy ratio
- the terminal may perform congestion control by limiting the sum of the channel occupancies of traffics whose priority k is lower than i to a certain value or less. According to this method, a stronger channel occupancy limit may be applied to traffic with a relatively low priority.
- the terminal can perform SL congestion control by using methods such as adjusting the size of transmission power, dropping packets, deciding whether to retransmit, and adjusting the transmission RB size (MCS adjustment).
- Table 5 shows an example of SL CBR and SL RSSI.
- the SL Channel Busy Ratio (SL CBR) measured in slot n is defined as the fraction of sub-channels of the resource pool for which the SL RSSI measured by the terminal exceeds a (pre-)configured threshold detected over the CBR measurement window [na, n-1], where a is equal to 100 or 100 ⁇ 2 ⁇ slots, depending on the higher layer parameter sl-TimeWindowSizeCBR .
- SL RSSI Sidelink Receiver Signal Strength Indicator
- SL RSSI is defined as the linear average of the total received power (in [W]) observed in the configured sub-channels in the OFDM symbols of the slot configured for PSCCH and PSSCH, starting from the second OFDM symbol.
- the reference point for SL RSSI is the antenna connector of the terminal.
- the SL RSSI is measured based on the combined signal from the antenna elements corresponding to a given receiver branch.
- the reported SL RSSI value shall not be lower than the corresponding SL RSSI of an individual receiver branch.
- the slot index can be based on the physical slot index.
- Table 6 shows an example of SL CR (Channel occupancy ratio).
- the Sidelink Channel Occupancy Ratio (SL CR) evaluated at slot n is defined as the total number of sub-channels used for transmission at slot [n-a, n-1] and admitted at slot [n, n+b] divided by the total number of sub-channels established in the transmission pool over [n-a, n+b].
- a is a positive integer and b is 0 or a positive integer.
- the UE When evaluating SL CR, the UE shall assume that the transmission parameters used in slot n are reused according to the existing grant(s) in slot [n+1, n+b] without dropping packets.
- SL CR can be calculated per priority level.
- a resource is considered approved if it is a member of a selected sidelink grant.
- FIG. 10 illustrates beam management according to one embodiment of the present disclosure.
- the embodiment of FIG. 10 can be combined with various embodiments of the present disclosure.
- beam management may include beam determination, beam measurement, beam reporting, and/or beam sweeping.
- a narrow antenna beam may be transmitted far in a specific direction but may not widely cover the entire cell at once. Rather, when an antenna beam is formed in one direction, almost no antenna beam is created in the other direction, so no signal may be transmitted. Therefore, in such cases, a transmitter or a receiver may transmit or receive data, respectively, using beam forming. In this case, the transmitter or the receiver must continuously update and manage the beams used, which may be referred to as beam management.
- the terminal can perform the following motion-based sidelink FR2 (sidelink mmWave frequency-based sidelink communication) operations.
- motion-based sidelink FR2 sidelink mmWave frequency-based sidelink communication
- - Beam sweeping operation An operation of covering a spatial area using a transmit and/or receive beam for a predetermined time interval in a predetermined manner.
- - Beam measurement operation An operation to measure the reference signal (RS) transmitted by the counterpart terminal and find the RS whose measurement value is greater than the threshold.
- - Beam selection operation An operation to select the best beam (reception beam, transmission beam) based on the beam measurement results.
- - Beam reporting operation An operation to report the selected best beam to the opposing terminal or base station.
- sidelink communication may include device-to-device communication, A2X (Aircraft-to-Everything) communication, V2X (Vehicle-to-Everything) communication, etc.
- the beam management method for the sidelink communication may include a beam pairing method, which is a process of finding a pair of transmission beams and reception beams between terminals.
- a beam pairing method which is a process of finding a pair of transmission beams and reception beams between terminals.
- the first terminal may transmit a resource for beam measurement
- the second terminal may measure reception sensitivity for a combination of all or part of transmission beams and reception beams and then report preferred transmission beam and/or reception beam information to the first terminal.
- the first terminal may perform communication with the second terminal using the reported transmission beam.
- the beam management method for the sidelink communication may include a multi-beam transmission method, which is a process of transmitting and receiving a signal through one or more transmission beams and/or reception beams between terminals.
- a multi-beam transmission method which is a process of transmitting and receiving a signal through one or more transmission beams and/or reception beams between terminals.
- a resource set may be distinguished according to a beam type during terminal-to-terminal sidelink-based communication. Then, a method is proposed to support the beam pairing method and/or the multi-beam transmission method by setting one or more of these resource sets as anchor resources to which a common beam or a beam with unspecified directionality is applied.
- the proposed methods of the present disclosure below describe terminal-to-terminal sidelink-based communication, but the proposed methods of the present disclosure can be obviously extended to arbitrary node-to-node communication.
- a beam may mean a transmission beam and/or a reception beam.
- a first type beam and/or a second type beam in the present disclosure may mean a transmission beam type and/or a reception beam type.
- a first resource set to which a first type beam is applied and/or a second resource set to which a second type beam is applied may be agreed upon/set in advance between the terminals.
- the first type beam may include a common beam whose directionality is not specified.
- the second type beam may include a dedicated beam whose directionality is specified and/or a common beam whose directionality is not specified.
- a beam measurement and reporting process can be performed using only information pre-shared between the terminals before beam pairing.
- a beam measurement and reporting process can be performed using available resources before beam pairing in addition to information pre-shared between the terminals before beam pairing.
- a method of securing available terminal resources before beam pairing among the two methods may be more preferable.
- a transmission beam and/or a reception beam whose directionality is specified can be applied by performing beam pairing, and when performing broadcast and/or group cast transmission between terminals, a transmission beam and/or a reception beam whose directionality is not specified can be applied without performing beam pairing.
- a first resource set to which a first type beam is applied and/or a second resource set to which a second type beam is applied may be agreed upon/set in advance between the terminals.
- the first type beam may mean a common beam whose directionality is not specified
- the second type beam may include the common beam and/or a dedicated beam whose directionality is specified.
- the first resource set since the first resource set does not have a constraint that causes the terminal to form a beam in a specific direction, the communication between the first terminal and the second terminal can be supported even before beam pairing and/or when beam pairing is unstable. Therefore, the first resource set can play the role of an anchor that ensures minimum connectivity for sidelink communication.
- FIG. 11 illustrates a first resource set to which a first type beam is applied and a second resource set to which a second type beam is applied, according to an embodiment of the present disclosure.
- the embodiment of FIG. 11 can be combined with various embodiments of the present disclosure.
- the first terminal can transmit a second control signal within the first resource set to reserve and/or instruct a beam measurement resource within the second resource set, and the second terminal can perform beam measurement using the beam measurement resource.
- the first type beam can include a common beam whose directionality is not specified.
- the second type beam can include a dedicated beam whose directionality is specified and/or a common beam whose directionality is not specified.
- the second control signal can indicate beam identifier information and/or beam related information corresponding to the beam measurement resource transmitted within the second resource set.
- the second control signal may be a primary SCI (sidelink control information) and/or a secondary SCI and/or a MAC CE (control element).
- a process of measuring and comparing reception sensitivity for each combination of transmission beams and reception beams must be performed in advance in order to select a pair of transmission beams and/or reception beams.
- the reception terminal In order to measure reception sensitivity for a combination of transmission beams and reception beams, the reception terminal must be able to know the locations of resources to which measurement resources corresponding to specific transmission beams and/or transmission beam identifiers are transmitted so as to measure reception sensitivity for specific transmission beams and/or transmission beam identifiers.
- the reception terminal when the reception terminal wants to measure reception sensitivity for each combination between a specific transmission beam and M reception beams, the reception terminal must be able to know the transmission locations of the M measurement resources to which the specific transmission beam is applied.
- the transmission locations of the beam measurement resources if the initial beam pairing process is supported, the transmission locations of the beam measurement resources must be able to be transmitted to the reception terminal before beam pairing.
- a first resource set to which a first type beam is applied and/or a second resource set to which a second type beam is applied can be agreed upon/established in advance between the terminals, and the first terminal can transmit a second control signal within the first resource set to reserve and/or indicate beam measurement resources within the second resource set.
- the first type beam may mean a common beam whose directionality is not specified
- the second type beam may include the common beam and/or a dedicated beam whose directionality is specified.
- the first terminal since the first resource set does not have a constraint that allows the terminal to form a beam in a specific direction, the first terminal can support communication between the first terminal and the second terminal even before beam pairing.
- the first resource set can serve as an anchor that notifies beam measurement resources in the second resource set whose beam direction can be specified.
- transmission locations of beam measurement resources for initial beam pairing can be stably transmitted before beam pairing by informing transmission of beam measurement resources in a resource set where beam directionality can be specified in a resource set where beam directionality is not specified.
- the first resource set since the first resource set allows sidelink communication without a beam pairing process, it can be utilized as a stable anchor resource supporting data transmission where directionality is not specified in addition to reservation and/or instruction for beam measurement resources.
- the first terminal When performing communication between a first terminal and a second terminal, when a first resource set to which a first type beam is applied and/or a second resource set to which a second type beam is applied are agreed upon/set in advance between the terminals, the first terminal may transmit a second control signal within the first resource set to reserve and/or instruct a beam measurement resource within the second resource set, the second terminal may perform beam measurement using the beam measurement resource and then report the beam measurement result, and the first terminal may apply a reception beam corresponding to the transmission beam applied to the first resource when receiving the beam measurement result.
- the first type beam may include a common beam whose directionality is not specified.
- the second type beam may include a dedicated beam whose directionality is specified and/or a common beam whose directionality is not specified.
- the second terminal can report the beam measurement result as a resource in the first resource set and/or a resource in the second resource set.
- the transmission beam applied by the second terminal when reporting the beam measurement result may be a transmission beam corresponding to a reception beam applied when receiving the second control signal, or may be a transmission beam corresponding to an optimal transmission beam and/or reception beam searched for as a beam measurement resource.
- the beam measurement result report may include whether beam pairing succeeds/fails.
- the second control signal may indicate a beam identifier and/or beam-related information corresponding to a beam measurement resource transmitted in the second resource set together.
- the second control signal may be a primary SCI (sidelink control information) and/or a secondary SCI and/or a MAC CE (control element).
- reservation information for transmission resources in the second resource set may or may not be transmitted depending on channel congestion expressed by indicators such as Channel Busy Ratio (CBR) and/or Channel occupancy Ratio (CR). For example, when the CBR and/or CR are high, transmitting the resource reservation information may be omitted since it may be meaningless to send the resource reservation information.
- CBR Channel Busy Ratio
- CR Channel occupancy Ratio
- a process of measuring and comparing reception sensitivity for each combination of transmission beams and reception beams must be performed in advance in order to select a pair of transmission beams and/or reception beams.
- the receiving terminal In order to measure reception sensitivity for a combination of transmission beams and reception beams, the receiving terminal must be able to know the location of a resource to which a measurement resource corresponding to a specific transmission beam and/or transmission beam identifier is transmitted so as to measure reception sensitivity for the specific transmission beam and/or transmission beam identifier.
- a first resource set to which a first type beam is applied and/or a second resource set to which a second type beam is applied may be agreed upon and/or set in advance between terminals, and the first terminal may transmit a second control signal within the first resource set to reserve and/or instruct a beam measurement resource within the second resource set.
- the first type beam may mean a common beam whose directionality is not specified
- the second type beam may include the common beam and/or a dedicated beam whose directionality is specified.
- the second terminal may report a beam measurement result utilizing the beam measurement resource to the first terminal.
- the first terminal since the first terminal does not know which transmission beam and reception beam pair the second terminal selected as the optimal beam pair in the beam measurement process, the first terminal may assume a reception beam corresponding to the transmission beam transmitted via the second control signal upon receiving the beam measurement result reported by the second terminal.
- the second terminal can report the beam measurement result as a resource in the first resource set in which the beam directionality is not specified.
- the reception resource must be set as a dedicated resource for the second terminal because only reception with a specific directionality is allowed, which may significantly restrict resource utilization. According to the proposed method of the present disclosure, there is an advantage of allowing the receiving terminal to report on the beam measurement result, while alleviating the reception beam constraint in the reporting resource.
- FIG. 12 illustrates beam measurement and/or beam reporting based on a first resource set and/or a second resource set, according to an embodiment of the present disclosure.
- the embodiment of FIG. 12 can be combined with various embodiments of the present disclosure.
- the terminal When performing communication between a first terminal and a second terminal, when a first resource set to which a first type beam is applied and/or a second resource set to which a second type beam is applied are agreed upon/set in advance between the terminals, the terminal may configure a first sensing resource set with resources in the first resource set, and the terminal may utilize resource reservation information indicated in control signal(s) in the first sensing resource set and/or measured reception sensitivity in the first sensing resource set when selecting a transmission resource in the first resource set and/or selecting a transmission resource in the second resource set.
- the first type beam may include a common beam whose directionality is not specified.
- the second type beam may include a dedicated beam whose directionality is specified and/or a common beam whose directionality is not specified.
- the terminal can derive the expected reception sensitivity by reflecting the transmission beam gain and/or the reception beam gain to the measured reception sensitivity within the first sensing resource set when predicting the reception sensitivity for the reserved resources within the second resource set.
- the transmission beam gain and/or the reception beam gain information can be agreed upon and/or set in advance between the terminals or transmitted via a control signal.
- the terminal may perform resource selection based on a sensing result.
- the terminal may define a candidate resource set for resource reservation and/or allocation, and the terminal may configure a sensing resource set preceding the candidate resource set.
- the terminal may detect control signals (e.g., SCI) transmitted by other terminals in the sensing resource set to recognize reserved resources, and the terminal may measure reception sensitivity (e.g., RSRP (reference signals received power)) by utilizing reference signals in the sensing resource set.
- control signals e.g., SCI
- reception sensitivity e.g., RSRP (reference signals received power)
- the terminal may predict reception sensitivity due to the reserved resources with the measured reception sensitivity, and the terminal may select a transmission resource from the remaining resources, excluding resources whose related reception sensitivity is higher than a certain reference value.
- sensing-based resource selection is applied to resources where transmission beams and/or reception beams have directionality, a problem of incorrectly judging the influence of interference from other terminals, such as the hidden node problem, may occur. For example, suppose that a first terminal performs sensing in a specific beam direction, selects a resource that it feels has less interference, and then transmits to a second terminal in the beam direction.
- a first sensing resource set can be configured with resources in the first resource set, and when transmitting within the first resource set and/or transmitting within the second resources, resource reservation information indicated by control signal(s) in the first sensing resource set and/or measured reception sensitivity within the first sensing resource set can be utilized.
- the first type beam can mean a common beam whose directionality is not specified
- the second type beam can include the common beam and/or a dedicated beam whose directionality is specified.
- the first resource set does not have a constraint that allows the terminal to form a beam in a specific direction, sensing in all directions is possible and a hidden node problem depending on the beam directionality can be alleviated.
- the proposed method of the present disclosure when performing transmission resource selection with a specified beam directionality, there is an advantage in that hidden node problems, etc., are alleviated among transmission resources with a specified beam directionality by utilizing a sensing resource set composed of resources with an unspecified beam directionality.
- FIG. 13 illustrates sensing based on a first set of resources according to an embodiment of the present disclosure.
- the embodiment of FIG. 13 can be combined with various embodiments of the present disclosure.
- the terminal When performing communication between a first terminal and a second terminal, when a first resource set to which a first type beam is applied and/or a second resource set to which a second type beam is applied are agreed upon/set in advance between the terminals, the terminal may configure a second sensing resource set with resources in the second resource set, and when selecting a (transmission) resource in the second resource set, the terminal may utilize resource reservation information indicated in control signal(s) in the second sensing resource set and/or measured reception sensitivity in the second sensing resource set.
- the first type beam may include a common beam whose directionality is not specified.
- the second type beam may include a dedicated beam whose directionality is specified and/or a common beam whose directionality is not specified.
- the terminal may utilize only a sensing result detected in a reception beam direction corresponding to a transmission beam direction to be applied at the time of resource reservation. For example, only the sensed results can be utilized by applying a common beam.
- the terminal may perform resource selection based on a sensing result.
- a first resource set to which a first type beam is applied and/or a second resource set to which a second type beam is applied may be agreed upon/established in advance between the terminals
- a first sensing resource set may be configured with resources in the first resource set
- resource reservation information indicated in control signal(s) in the first sensing resource set and/or measured reception sensitivity in the first sensing resource set may be utilized when transmitting in the first resource set and/or transmitting in the second resource.
- the first type beam may mean a common beam whose directionality is not specified, and the second type beam may include the common beam and/or a dedicated beam whose directionality is specified.
- the first sensing resource set allows sensing in all directions, so it can be a way to alleviate hidden node problems, etc.
- the terminal can detect control information transmitted by other nodes even within the second resource set.
- the information can only be received in a specific beam direction in some cases, but if the detected information exists, utilizing the information as additional sensing information can be a way to increase sensing accuracy.
- the terminal when performing communication between a first terminal and a second terminal, when a first resource set to which a first type beam is applied and/or a second resource set to which a second type beam is applied are agreed upon/set in advance between the terminals, the terminal can configure a second sensing resource set with resources in the second resource set, and when selecting a (transmission) resource in the second resource set, the terminal can utilize resource reservation information indicated in control signal(s) in the second sensing resource set and/or measured reception sensitivity in the second sensing resource set.
- the terminal can utilize resource reservation information indicated in control signal(s) in the first sensing resource set and/or measured reception sensitivity in the first sensing resource set as main information, and the terminal can utilize resource reservation information indicated in control signal(s) in the second sensing resource set and/or measured reception sensitivity in the second sensing resource set as secondary information.
- the proposed method of the present disclosure there is an advantage in that accurate sensing results can be obtained by allowing the terminal to utilize sensing results within both the first resource set and the second resource set when selecting sensing-based resources.
- the terminal may transmit a first control signal within the first resource set to reserve (transmission) resources within the first resource set, and the terminal may transmit a second control signal (distinguished from the first control signal) within the first resource set to reserve (transmission) resources within the second resource set.
- the first type beam may include a common beam whose directionality is not specified.
- the second type beam may include a dedicated beam whose directionality is specified and/or a common beam whose directionality is not specified.
- the first control signal may be a primary SCI (sidelink control information), and the second control signal may be a secondary SCI and/or a MAC CE (control element).
- the second control signal may also indicate beam identifier information corresponding to a (transmission) resource reserved within the second resource set.
- the terminal may perform resource selection based on a sensing result.
- the terminal may define a candidate resource set for resource reservation and/or allocation, and the terminal may configure a sensing resource set preceding the candidate resource set.
- the terminal may detect control signals (e.g., SCI) transmitted by other terminals in the sensing resource set to recognize reserved resources, and the terminal may measure reception sensitivity (e.g., RSRP (reference signals received power)) by utilizing reference signals in the sensing resource set.
- control signals e.g., SCI
- reception sensitivity e.g., RSRP (reference signals received power)
- the terminal may predict reception sensitivity due to the reserved resources with the measured reception sensitivity, and the terminal may select a transmission resource from the remaining resources, excluding resources whose related reception sensitivity is higher than a certain reference value.
- a first resource set to which a first type beam is applied and/or a second resource set to which a second type beam is applied are agreed upon/established in advance between terminals, the terminal configures a first sensing resource set with resources in the first resource set, and when transmitting within the first resource set and/or transmitting within the second resources, resource reservation information indicated in control signal(s) in the first sensing resource set and/or measured reception sensitivity within the first sensing resource set are utilized.
- the first type beam may mean a common beam whose directionality is not specified
- the second type beam may include the common beam and/or a dedicated beam whose directionality is specified.
- transmission resources reserved within the first resource set and/or the second resource set must be indicated within the first sensing resource set.
- reservation information for the resources to be transmitted in the future can be indicated via a control signal within the first resource set.
- the reservation information for the resources to be transmitted within the second resource set must include information related to a transmission beam and/or a reception beam, and needs to be distinguished from the reservation information for the resources to be transmitted within the first resource set, where the directionality of the beam is not specified.
- the terminal when performing communication between a first terminal and a second terminal, when a first resource set to which a first type beam is applied and/or a second resource set to which a second type beam is applied are agreed upon/set in advance between the terminals, the terminal may transmit a first control signal within the first resource set to reserve transmission resources within the first resource set, and the terminal may transmit a second control signal (distinguished from the first control signal) within the first resource set to reserve transmission resources within the second resource set.
- reservation information for transmission resources may be transmitted as a control signal within the first resource set, but resources to be transmitted within the first resource set may be reserved and/or indicated by a primary SCI, and resources to be transmitted within the second resource set may be reserved and/or indicated by a secondary SCI and/or MAC CE.
- control signals suitable for resource reservation and/or instruction within each set can be separately configured for the first and second resource sets, thereby efficiently transmitting resource reservation information.
- FIG. 14 illustrates a method for a terminal to transmit a control signal within a first resource set to reserve resources within a second resource set, according to an embodiment of the present disclosure.
- the embodiment of FIG. 14 can be combined with various embodiments of the present disclosure.
- the terminal may transmit a third control signal within the second resource set to reserve (transmission) resources within the second resource set.
- the first type beam may include a common beam whose directionality is not specified.
- the second type beam may include a dedicated beam whose directionality is specified and/or a common beam whose directionality is not specified.
- the third control signal may be a first SCI (sidelink control information) and/or a second SCI and/or a MAC CE (control element).
- the third control signal may indicate beam identifier information corresponding to the (transmission) resources reserved within the second resource set.
- the terminal may perform resource selection based on a sensing result. For example, in an embodiment according to the proposed method(s) of the present disclosure, when a first resource set to which a first type beam is applied and/or a second resource set to which a second type beam is applied are agreed upon and/or set in advance between the terminals, the terminal may configure a second sensing resource set with resources in the second resource set, and the terminal may utilize resource reservation information indicated in control signal(s) in the second sensing resource set and/or measured reception sensitivity in the second sensing resource set when selecting (transmission) resources in the second resource set.
- the first type beam may mean a common beam whose directionality is not specified
- the second type beam may include the common beam and/or a dedicated beam whose directionality is specified.
- reservation information for resources to be transmitted in the future in the second resource set can be indicated via a control signal in the second resource set.
- the control information in the first resource set can reserve resources in the first and second resource sets, but the control information in the second resource set can reserve only resources in the second resource set.
- the first resource set is a resource set in which a first type beam is assumed and a plurality of terminals are expected to monitor
- the second resource set is a resource set in which a second type beam is assumed and only some terminals are expected to monitor.
- the terminal detects the reserved information for the second resource set
- the terminal can utilize the control signal transmitted in the first resource set and/or the control signal transmitted in the second resource set.
- primary resource reservation for the first and second resource sets can be performed with a control signal within the first resource set, and an operation of re-notifying resource reservation information within the second resource set can be performed with a control signal within the second resource set.
- the first candidate resource set composed of resources in the first resource set and the second candidate resource set composed of resources in the second resource set can be configured separately.
- the first type beam can include a common beam whose directionality is not specified.
- the second type beam can include a dedicated beam whose directionality is specified and/or a common beam whose directionality is not specified.
- resource selection based on a sensing result may be performed.
- the terminal may define a candidate resource set for resource reservation and/or allocation, and the terminal may configure a sensing resource set that precedes the candidate resource set.
- the terminal may detect control signals (e.g., SCI) transmitted by other terminals in the sensing resource set to recognize reserved resources, and may measure reception sensitivity (e.g., RSRP (reference signals received power)) by utilizing reference signals in the sensing resource set.
- control signals e.g., SCI
- reception sensitivity e.g., RSRP (reference signals received power)
- the terminal may predict reception sensitivity due to the reserved resources with the measured reception sensitivity, and the terminal may select a transmission resource from the remaining resources, excluding resources whose related reception sensitivity is higher than a certain reference value.
- the terminal may predict reception sensitivity due to the reserved resources with the measured reception sensitivity, and the terminal may select a transmission resource from the remaining resources, excluding resources whose related reception sensitivity is higher than a certain reference value.
- the candidate resource sets may be desirable for the candidate resource sets to be distinguished by each beam type.
- the first type beam may mean a common beam whose directionality is not specified
- the second type beam may include the common beam and/or a dedicated beam whose directionality is specified.
- the terminal may configure a first sensing resource set composed of resources in the first resource set for the first candidate resource set composed of resources in the first resource set, and the terminal may perform sensing-based resource reservation and/or selection by utilizing this.
- resource reservation information in the first sensing resource set may be indicated as a primary SCI that can be decoded by conventional terminals, and thus coexistence of conventional terminals that do not support the second type beam in the first resource set may be permitted.
- conventional terminals can operate as if the first resource set is given as a resource pool.
- the terminal can configure a first sensing resource set composed of resources in the first resource set for a second candidate resource set composed of resources in the second resource set, and the terminal can perform sensing-based resource reservation and/or selection by utilizing the same.
- resource reservation information in the second resource set in the first sensing resource set may be indicated by a second SCI or MAC CE that conventional terminals cannot decode, and therefore coexistence of conventional terminals that do not support the second type beam in the second resource set may be difficult.
- the first preferred/non-preferred resource set composed of resources in the first resource set and the second preferred/non-preferred resource set composed of resources in the second resource set can be configured separately.
- the first type beam can include a common beam whose directionality is not specified.
- the second type beam can include a dedicated beam whose directionality is specified and/or a common beam whose directionality is not specified.
- the transmitting terminal can select a final (transmission) resource by utilizing the preferred resource set and/or the non-preferred resource set.
- the receiving terminal may report a preferred resource set and/or a non-preferred resource set to the transmitting terminal from the receiver's perspective.
- a first resource set to which a first type beam is applied and/or a second resource set to which a second type beam is applied are agreed upon/set in advance between the terminals, it may be desirable for the preferred/non-preferred resource set to be distinguished for each beam type.
- the first type beam may mean a common beam whose directionality is not specified
- the second type beam may include the common beam and/or a dedicated beam whose directionality is specified.
- the receiving terminal may provide the transmitting terminal with a first preferred/non-preferred resource set composed of resources in the first resource set and a second preferred/non-preferred resource set composed of resources in the second resource set.
- the transmitting terminal can utilize the first preferred/non-preferred resource set when selecting a resource within the first resource set
- the transmitting terminal can utilize the second preferred/non-preferred resource set when selecting a resource within the second resource set. According to the proposed method of the present disclosure, there is an advantage in that, for resource sets to which different beam types are applied, the preferred/non-preferred resource sets are distinguished by beam type, thereby enabling independent sensing and/or resource selection methods to be applied.
- the first type beam and the second type beam may be defined to distinguish reception beam types that may be used in the first resource set and the second resource set, respectively.
- the first type beam may mean a common reception beam whose directionality is not specified or a reception beam that may be used when beam pairing-based communication is not performed.
- the second type beam may mean a dedicated reception beam whose directionality is specified or a reception beam that may be used when beam pairing-based communication is performed.
- the transmission beam that may be applied to the first resource set and/or the second resource set may not be restricted.
- resources for broadcast transmission and/or group cast transmission between the terminals may be supported.
- a resource set for terminal-to-terminal communication may be divided into a first resource set and a second resource set, and a first type beam and a second type beam may be allowed in each resource set.
- the first type beam and the second type beam may be restrictions on the type of reception beam.
- the first type beam may mean a common reception beam with no specified directionality or a reception beam that can be used when not performing beam pairing-based communication.
- the second type beam may mean a dedicated reception beam with specified directionality or a reception beam that can be used when performing beam pairing-based communication.
- the transmitting terminal may transmit broadcast data and/or group cast data through the first resource set, and the receiving terminal may attempt to receive in an omni-directional beam in the first resource set.
- the transmitting terminal may transmit unicast data through the second resource set, and the receiving terminal may attempt to receive in an omni-directional beam and/or a directional beam in the second resource set.
- a method when performing communication between a first terminal and a second terminal, when a first resource set to which a first type beam is applied and/or a second resource set to which a second type beam is applied are agreed upon/set in advance between the terminals, a method may also be considered in which the first type beam and the second type beam are defined to distinguish transmission beam types that can be used in the first resource set and the second resource set, respectively.
- the reception beam that can be applied to the first resource set and/or the second resource set may not be restricted.
- the terminal When performing communication between a first terminal and a second terminal, when a first resource set to which a first type beam is applied and/or a second resource set to which a second type beam is applied are agreed upon/set in advance between the terminals, the terminal can define a candidate resource set for selecting transmission resources with resources in the first resource set and the second resource set, and the terminal can exclude resources in the candidate resource set whose reception sensitivity of reserved resource transmission is higher than a threshold value.
- the threshold value can be applied differently to the first resource set and the second resource set.
- the first type beam can mean a common beam with unspecified directionality or a beam that can be used when not performing beam pairing-based communication.
- the second type beam can mean a dedicated beam with specified directionality or a beam that can be used when performing beam pairing-based communication.
- the terminal may perform resource selection based on a sensing result.
- the terminal may define a candidate resource set for transmission resource selection, and the terminal may configure a sensing resource set that precedes the candidate resource set.
- the terminal may detect control signals (e.g., SCI) transmitted by other terminals in the sensing resource set to recognize reserved resources, and the terminal may measure reception sensitivity (e.g., RSRP (reference signals received power)) by utilizing reference signals in the sensing resource set.
- control signals e.g., SCI
- reception sensitivity e.g., RSRP (reference signals received power)
- the terminal may predict reception sensitivity due to the reserved resources with the measured reception sensitivity, and the terminal may select a transmission resource from the remaining resources, excluding resources whose related reception sensitivity is higher than a certain reference value.
- the candidate resource set for selecting the transmission resource may include both resources in the first resource set and resources in the second resource set.
- a reference value for comparing the reception sensitivity for the reserved resources may be applied differently to the resources in the first resource set and the resources in the second resource set. For example, when the first type beam is an omnidirectional beam, the beam gain may be small, so the reference value may be set high.
- the beam gain may be large, so the reference value may be set low.
- the proposed method of the present disclosure there is an advantage in that resource selection is possible by compensating for the difference due to the beam gain by setting a reference value for resource selection for each beam type.
- the terminal When performing communication between a first terminal and a second terminal, when a first resource set to which a first type beam is applied and/or a second resource set to which a second type beam is applied are agreed upon/set in advance between the terminals, the terminal can define a candidate resource set for selecting transmission resources with resources in the first resource set and the second resource set, and the terminal can exclude some resources from the candidate resource set according to conditions. At this time, if the remaining resources are below a certain ratio, the terminal can restore the excluded resources.
- a specific beam type resource can be given priority during restoration.
- the first type beam can mean a common beam whose directionality is not specified or a beam that can be used when not performing beam pairing-based communication.
- the second type beam can mean a dedicated beam whose directionality is specified or a beam that can be used when performing beam pairing-based communication.
- the specific beam type given priority can be the first type beam or the second type beam.
- the terminal may perform resource selection based on channel sensing.
- the terminal may define a candidate resource set for transmission resource selection, and the terminal may configure a sensing resource set that precedes the candidate resource set.
- the terminal may detect control signals (e.g., SCI) transmitted by other terminals in the sensing resource set to recognize reserved resources, and the terminal may measure reception sensitivity (e.g., RSRP (reference signals received power)) by utilizing reference signals in the sensing resource set.
- control signals e.g., SCI
- reception sensitivity e.g., RSRP (reference signals received power)
- the terminal may predict reception sensitivity due to the reserved resources based on the measured reception sensitivity, and the terminal may select transmission resources from the remaining resources excluding resources whose related reception sensitivity is higher than a certain criterion.
- the terminal may restore the excluded resources if the remaining resources are below a certain ratio.
- the terminal may prioritize the recovery of specific beam type resources. For example, if the first type beam is an omnidirectional beam, the interference size from other terminals may be excessively measured for resources in the first resource set to which the first type beam is applied. For example, if a receiving terminal receives with a directional beam, signals coming in from directions other than the corresponding direction may not act as interference.
- the terminal when the terminal recovers resources excluded from the resource selection process, the resources corresponding to the first type beam may be recovered with priority over the resources corresponding to the second type beam. According to the proposed method of the present disclosure, there is an advantage in that resources that can be expected to have less interference can be included in candidate resources with priority.
- the terminal may perform channel sensing for selecting and/or allocating transmission resources from a second resource pool in the first resource pool.
- the first resource pool and the second resource pool may be composed of distinct resources.
- time axis and/or frequency axis resources may be distinguished.
- BWP (bandwidth part) and/or carrier may be distinguished.
- a first resource pool and a second resource pool which are distinct from each other, may be utilized.
- the resource pool may mean a set of resources available for sidelink-based communication.
- the resource pool may include available slot information and available RB (resource block) information in a sidelink BWP (bandwidth part).
- the terminal may be configured with one or more resource pools for sidelink communication.
- the terminal may be configured with the first resource pool and the second resource pool.
- the first resource pool may be a resource pool that does not utilize a directional beam
- the second resource pool may be a resource pool that utilizes a directional beam.
- the first resource pool may be defined in FR1 (frequency range 1)
- the second resource pool may be defined in FR2.
- the channel sensing may be performed in the first resource pool.
- channel sensing may be performed assuming an omnidirectional reception beam in the first resource pool, and candidate transmission resources in the second resource pool may be selected based on the result.
- there is an advantage of solving the channel sensing problem by utilizing the channel sensing result in the resource pool where channel sensing is effective for selecting transmission resources in the resource pool where channel sensing is limited.
- repeated transmission may be performed for a control signal and/or data transmitted based on a transmission method that has been promised/set in advance and/or a transmission resource that has been promised/set in advance, and the terminal may aggregate the reception results for the repeated transmission and utilize them for channel sensing.
- the transmission method that has been promised/set in advance may mean a beam type.
- repeated transmission may be performed to compensate for a small antenna gain, and in case of transmission in a directional beam, repeated transmission may not be performed.
- resource selection based on a sensing result may be performed in the sidelink-based communication.
- the terminal may define a candidate resource set for resource reservation and/or allocation, and the terminal may configure a sensing resource set that precedes the candidate resource set.
- the terminal may detect control signals (e.g., SCI) transmitted by other terminals in the sensing resource set to recognize reserved resources, and the terminal may measure reception sensitivity (e.g., RSRP (reference signals received power)) by utilizing reference signals in the sensing resource set.
- control signals e.g., SCI
- reception sensitivity e.g., RSRP (reference signals received power)
- the terminal may predict reception sensitivity due to the reserved resources based on the measured reception sensitivity, and the terminal may select a transmission resource from the remaining resources excluding resources whose related reception sensitivity is higher than a certain reference value.
- the control signal and/or data may be repeatedly transmitted depending on the use of a specific transmission method and/or a specific transmission resource. For example, when performing side-link-based communication in FR2, control signals and/or data transmitted in an omni-directional beam may be repeatedly transmitted to compensate for small antenna gain, and control signals and/or data transmitted in a directional beam may not be repeatedly transmitted.
- sensing for resources that are repeatedly transmitted may be reflected by aggregating reception results for repeated transmissions.
- detection and/or RSRP measurement for control signals may be performed after receiving signals for repeated transmissions are combined.
- the phases of the received signals may be compensated for through a channel estimation process and then the repeated received signals may be combined.
- channel sensing results reflecting the effect of repeated transmissions can be expected for repeatedly transmitted resources. For example, if control signals for each slot are detected in the conventional manner for repeatedly transmitted resources and then utilized for channel sensing, there is a limitation in that noise mitigation gains due to repeated transmissions cannot be fully enjoyed.
- spatial setting information for sidelink transmission may be changed/managed/configured/instructed differently or independently by recast type and/or by unicast session and/or by receiver for sidelink transmission and/or by SL channel type and/or by (transmitting and/or receiving) resource pool and/or by mobility related information of UE (e.g., speed, velocity, direction, acceleration, position, height, etc.) and/or by transmission priority value and/or by reception priority value and/or by SL transmission with SL HARQ-ACK feedback enabled/disabled and/or by SL HARQ-ACK feedback option and/or by QoS parameter and/or by (remaining) packet delay budget (PDB) and/or by HARQ process and/or by beam process and/or by source ID and/or by destination ID and/or by transport block (TB).
- PDB packet delay budget
- the various schemes of the present disclosure may be applied differently per unicast session (group) and/or per cast type and/or per transmission priority value and/or per reception priority value and/or per SL transmission with SL HARQ-ACK feedback enabled/disabled and/or per SL HARQ-ACK feedback option and/or per QoS parameter and/or per (remaining) PDB and/or per congestion control level and/or per (transmission and/or reception) resource pool and/or per mobility-related information of UE (e.g., speed, velocity, direction, acceleration, position, height, etc.) and/or per sidelink transmission or reception and/or per HARQ process and/or per beam process and/or per source ID and/or per destination ID and/or per TB.
- UE e.g., speed, velocity, direction, acceleration, position, height, etc.
- the unit of (pre)configuration may be configured in the form of the different combinations mentioned above.
- parameter indication and management via PSCCH and/or PSSCH may be performed in units of the above different combinations.
- spatial setting and/or transmission configuration indication (TCI) information and/or quasi-co-location (QCL) information and/or beams, etc. may refer to each other and/or may be interpreted as being replaced with beam-related information, beam direction, spatial domain transmission or reception filter, etc.
- the fact that the spatial setting information for transmission is the same may mean that the spatial domain TX filter of the terminal is the same for two different transmission signals.
- the fact that the spatial setting information for reception is the same may mean that the two different reception signals are in a QCL 'TypeD' relationship and/or use the same spatial RX parameters.
- (pre)configuration may mean pre-configuration (based on signaling from a server or at the time of product shipment), configuration from a base station, configuration via PC5-RRC between terminals, etc.
- the various methods of the present disclosure can be applied differently depending on the SL channel.
- the various methods of the present disclosure can be applied differently depending on the type of information included in the SL channel.
- FIG. 15 illustrates a method for a first device to perform wireless communication according to an embodiment of the present disclosure.
- the embodiment of FIG. 15 can be combined with various embodiments of the present disclosure.
- the first device can obtain information on a first resource set related to a first type beam.
- the first device can obtain information on a second resource set related to a second type beam.
- the first device can transmit a control signal to the second device for reserving at least one resource in the second resource set based on the first resource set.
- the first type beam may include a beam of a non-directional type
- the second type beam may include a beam of a directional type.
- the first device may be allowed to transmit the control signal for reserving at least one resource within the second resource set based on the first resource set.
- the first device may not be permitted to transmit a control signal for reserving at least one resource within the first resource set based on the second resource set.
- control signal for reserving at least one resource in the second resource set may include beam identifier information associated with the at least one resource in the second resource set.
- At least one resource within the second resource set may be reserved for beam measurements of the second device.
- the result of the beam measurement measured based on the at least one resource in the second resource set can be received from the second device based on the first type beam associated with the first resource set.
- At least one resource within the second resource set may be reserved for transmission of the first device.
- At least one resource in the second resource set may be selected based on sensing for the first resource set.
- At least one resource in the second resource set may be selected based on sensing for the second resource set, and the sensing may be performed with respect to a receive beam direction relative to a beam direction for transmission on the at least one resource.
- a first candidate resource set for resource reservation or resource selection within the first resource set and a second candidate resource set for resource reservation or resource selection within the second resource set can be set independently.
- a first threshold used for resource exclusion in the first candidate resource set can be set independently of a second threshold used for resource exclusion in the second candidate resource set.
- the first preferred resource set or the first non-preferred resource set within the first resource set and the second preferred resource set or the second non-preferred resource set within the second resource set can be set independently.
- candidate resources in the first resource set may be included in the remaining candidate resources with preference over candidate resources in the second resource set based on the ratio of remaining candidate resources to all candidate resources being below a threshold.
- resource reservation or resource selection within the first resource set or the second resource set may be performed based on the sum of sensing results for repeated transmissions.
- repeated transmissions based on the first set of resources may be allowed, and repeated transmissions based on the second set of resources may not be allowed.
- the processor (102) of the first device (100) can obtain information on a first resource set related to a first type beam. Then, the processor (102) of the first device (100) can obtain information on a second resource set related to a second type beam. Then, the processor (102) of the first device (100) can control the transceiver (106) to transmit a control signal to the second device for reserving at least one resource in the second resource set based on the first resource set.
- the first type beam can include a beam of a non-directional type
- the second type beam can include a beam of a directional type.
- a first device configured to perform wireless communication
- the first device may include at least one transceiver; at least one processor; and at least one memory coupled to the at least one processor and storing instructions.
- the instructions based on being executed by the at least one processor, may cause the first device to: obtain information about a first set of resources associated with a first type of beam; obtain information about a second set of resources associated with a second type of beam; and transmit a control signal to the second device for reserving at least one resource in the second set of resources based on the first set of resources.
- the first type of beam may include a beam of a non-directional type
- the second type of beam may include a beam of a directional type.
- a processing device configured to control a first device.
- the processing device may include at least one processor; and at least one memory coupled to the at least one processor and storing instructions.
- the instructions based on being executed by the at least one processor, may cause the first device to: obtain information about a first set of resources associated with a first type beam; obtain information about a second set of resources associated with a second type beam; and transmit a control signal to the second device for reserving at least one resource in the second set of resources based on the first set of resources.
- the first type of beam may include a beam of a non-directional type
- the second type of beam may include a beam of a directional type.
- a non-transitory computer-readable storage medium having instructions recorded thereon may be provided.
- the instructions when executed, may cause a first device to: obtain information about a first set of resources associated with a first type beam; obtain information about a second set of resources associated with a second type beam; and transmit a control signal to the second device for reserving at least one resource in the second set of resources based on the first set of resources.
- the first type of beam may include a beam of a non-directional type
- the second type of beam may include a beam of a directional type.
- FIG. 16 illustrates a method for a second device to perform wireless communication according to an embodiment of the present disclosure.
- the embodiment of FIG. 16 can be combined with various embodiments of the present disclosure.
- the second device can obtain information on a first resource set related to a first type beam.
- the second device can obtain information on a second resource set related to a second type beam.
- the second device can receive, from the first device, a control signal for reserving at least one resource in the second resource set based on the first resource set.
- the first type beam may include a beam of a non-directional type
- the second type beam may include a beam of a directional type.
- a control signal for reserving at least one resource in the first resource set may not be received based on the second resource set.
- control signal for reserving at least one resource in the second resource set may include beam identifier information associated with the at least one resource in the second resource set.
- At least one resource within the second resource set may be reserved for beam measurements of the second device.
- the result of the beam measurement measured based on the at least one resource in the second resource set can be transmitted to the first device based on the first type beam associated with the first resource set.
- At least one resource within the second resource set may be reserved for transmission of the first device.
- At least one resource in the second resource set may be selected based on sensing for the first resource set.
- At least one resource in the second resource set may be selected based on sensing for the second resource set, and the sensing may be performed with respect to a receive beam direction relative to a beam direction for transmission on the at least one resource.
- a first candidate resource set for resource reservation or resource selection within the first resource set and a second candidate resource set for resource reservation or resource selection within the second resource set can be set independently.
- a first threshold used for resource exclusion in the first candidate resource set can be set independently of a second threshold used for resource exclusion in the second candidate resource set.
- the first preferred resource set or the first non-preferred resource set within the first resource set and the second preferred resource set or the second non-preferred resource set within the second resource set can be set independently.
- candidate resources in the first resource set may be included in the remaining candidate resources with preference over candidate resources in the second resource set based on the ratio of remaining candidate resources to all candidate resources being below a threshold.
- resource reservation or resource selection within the first resource set or the second resource set may be performed based on the sum of sensing results for repeated transmissions.
- repeated transmissions based on the first set of resources may be allowed, and repeated transmissions based on the second set of resources may not be allowed.
- the processor (202) of the second device (200) can obtain information on a first resource set related to a first type beam. Then, the processor (202) of the second device (200) can obtain information on a second resource set related to a second type beam. Then, the processor (202) of the second device (200) can control the transceiver (206) to receive a control signal for reserving at least one resource in the second resource set from the first device based on the first resource set.
- the first type beam can include a beam of a non-directional type
- the second type beam can include a beam of a directional type.
- a second device configured to perform wireless communication
- the second device may include at least one transceiver; at least one processor; and at least one memory coupled to the at least one processor and storing instructions.
- the instructions based on being executed by the at least one processor, may cause the second device to: obtain information about a first set of resources associated with a first type beam; obtain information about a second set of resources associated with a second type beam; and receive a control signal from the first device for reserving at least one resource in the second set of resources based on the first set of resources.
- the first type of beam may include a beam of a non-directional type
- the second type of beam may include a beam of a directional type.
- a processing device configured to control a second device.
- the processing device may include at least one processor; and at least one memory coupled to the at least one processor and storing instructions.
- the instructions based on being executed by the at least one processor, may cause the second device to: obtain information about a first set of resources associated with a first type beam; obtain information about a second set of resources associated with a second type beam; and receive a control signal from the first device for reserving at least one resource in the second set of resources based on the first set of resources.
- the first type of beam may include a beam of a non-directional type
- the second type of beam may include a beam of a directional type.
- a non-transitory computer-readable storage medium having instructions recorded thereon may be provided.
- the instructions when executed, may cause a second device to: obtain information about a first set of resources associated with a first type beam; obtain information about a second set of resources associated with a second type beam; and receive, from the first device, a control signal for reserving at least one resource in the second set of resources based on the first set of resources.
- the first type of beam may include a beam of a non-directional type
- the second type of beam may include a beam of a directional type.
- Fig. 17 illustrates a communication system (1) according to one embodiment of the present disclosure.
- the embodiment of Fig. 17 can be combined with various embodiments of the present disclosure.
- a communication system (1) to which various embodiments of the present disclosure are applied includes a wireless device, a base station, and a network.
- the wireless device means a device that performs communication using a wireless access technology (e.g., 5G NR (New RAT), LTE (Long Term Evolution)) and may be referred to as a communication/wireless/5G device.
- the wireless device may include a robot (100a), a vehicle (100b-1, 100b-2), an XR (eXtended Reality) device (100c), a hand-held device (100d), a home appliance (100e), an IoT (Internet of Thing) device (100f), and an AI device/server (400).
- the vehicle may include a vehicle equipped with a wireless communication function, an autonomous vehicle, a vehicle capable of performing vehicle-to-vehicle communication, etc.
- the vehicle may include an Unmanned Aerial Vehicle (UAV) (e.g., a drone) and/or an Aerial Vehicle (AV) (e.g., an Advanced Air Mobility (AAM)).
- UAV Unmanned Aerial Vehicle
- AV Aerial Vehicle
- AAM Advanced Air Mobility
- the XR device may include an Augmented Reality (AR)/Virtual Reality (VR)/Mixed Reality (MR) device, and may be implemented in the form of a Head-Mounted Device (HMD), a Head-Up Display (HUD) equipped in a vehicle, a television, a smartphone, a computer, a wearable device, a home appliance, digital signage, a vehicle, a robot, etc.
- the portable device may include a smartphone, a smart pad, a wearable device (e.g., a smart watch, smart glasses), a computer (e.g., a laptop, etc.), etc.
- the home appliance may include a TV, a refrigerator, a washing machine, etc.
- the IoT device may include a sensor, a smart meter, etc.
- a base station and a network may also be implemented as wireless devices, and a specific wireless device (200a) may act as a base station/network node to other wireless devices.
- the wireless communication technology implemented in the wireless devices (100a to 100f) of the present specification may include not only LTE, NR, and 6G, but also Narrowband Internet of Things for low-power communication.
- NB-IoT technology may be an example of LPWAN (Low Power Wide Area Network) technology, and may be implemented with standards such as LTE Cat NB1 and/or LTE Cat NB2, and is not limited to the above-described names.
- the wireless communication technology implemented in the wireless devices (100a to 100f) of the present specification may perform communication based on LTE-M technology.
- LTE-M technology may be an example of LPWAN technology, and may be called by various names such as eMTC (enhanced Machine Type Communication).
- the LTE-M technology can be implemented by at least one of various standards such as 1) LTE CAT 0, 2) LTE Cat M1, 3) LTE Cat M2, 4) LTE non-BL (non-Bandwidth Limited), 5) LTE-MTC, 6) LTE Machine Type Communication, and/or 7) LTE M, and is not limited to the above-described names.
- the wireless communication technology implemented in the wireless device (100a to 100f) of the present specification can include at least one of ZigBee, Bluetooth, and Low Power Wide Area Network (LPWAN) considering low-power communication, and is not limited to the above-described names.
- ZigBee technology can create PAN (personal area networks) related to small/low-power digital communication based on various standards such as IEEE 802.15.4, and can be called by various names.
- Wireless devices (100a to 100f) can be connected to a network (300) via a base station (200). Artificial Intelligence (AI) technology can be applied to the wireless devices (100a to 100f), and the wireless devices (100a to 100f) can be connected to an AI server (400) via the network (300).
- the network (300) can be configured using a 3G network, a 4G (e.g., LTE) network, a 5G (e.g., NR) network, etc.
- the wireless devices (100a to 100f) can communicate with each other via the base station (200)/network (300), but can also communicate directly (e.g., sidelink communication) without going through the base station/network.
- vehicles can communicate directly (e.g. V2V (Vehicle to Vehicle)/V2X (Vehicle to everything) communication).
- IoT devices e.g., sensors
- IoT devices can communicate directly with other IoT devices (e.g., sensors) or other wireless devices (100a to 100f).
- Wireless communication/connection can be established between wireless devices (100a to 100f)/base stations (200), and base stations (200)/base stations (200).
- the wireless communication/connection can be achieved through various wireless access technologies (e.g., 5G NR) such as uplink/downlink communication (150a), sidelink communication (150b) (or, D2D communication), and communication between base stations (150c) (e.g., relay, IAB (Integrated Access Backhaul).
- 5G NR wireless access technologies
- a wireless device and a base station/wireless device, and a base station and a base station can transmit/receive wireless signals to/from each other.
- the wireless communication/connection can transmit/receive signals through various physical channels.
- various configuration information setting processes for transmitting/receiving wireless signals various signal processing processes (e.g., channel encoding/decoding, modulation/demodulation, resource mapping/demapping, etc.), and resource allocation processes can be performed based on various proposals of the present disclosure.
- FIG. 18 illustrates a wireless device according to an embodiment of the present disclosure.
- the embodiment of FIG. 18 can be combined with various embodiments of the present disclosure.
- the first wireless device (100) and the second wireless device (200) can transmit and receive wireless signals through various wireless access technologies (e.g., LTE, NR).
- ⁇ the first wireless device (100), the second wireless device (200) ⁇ can correspond to ⁇ the wireless device (100x), the base station (200) ⁇ and/or ⁇ the wireless device (100x), the wireless device (100x) ⁇ of FIG. 17.
- a first wireless device (100) includes one or more processors (102) and one or more memories (104), and may additionally include one or more transceivers (106) and/or one or more antennas (108).
- the processor (102) controls the memory (104) and/or the transceiver (106), and may be configured to implement the descriptions, functions, procedures, suggestions, methods, and/or operational flowcharts disclosed in this document.
- the processor (102) may process information in the memory (104) to generate first information/signal, and then transmit a wireless signal including the first information/signal via the transceiver (106).
- the processor (102) may receive a wireless signal including second information/signal via the transceiver (106), and then store information obtained from signal processing of the second information/signal in the memory (104).
- the memory (104) may be connected to the processor (102) and may store various information related to the operation of the processor (102). For example, the memory (104) may perform some or all of the processes controlled by the processor (102), or may store software codes including instructions for performing the descriptions, functions, procedures, proposals, methods, and/or operational flowcharts disclosed in this document.
- the processor (102) and the memory (104) may be part of a communication modem/circuit/chip designed to implement wireless communication technology (e.g., LTE, NR).
- the transceiver (106) may be connected to the processor (102) and may transmit and/or receive wireless signals via one or more antennas (108).
- the transceiver (106) may include a transmitter and/or a receiver.
- the transceiver (106) may be used interchangeably with an RF (Radio Frequency) unit.
- a wireless device may also mean a communication modem/circuit/chip.
- the second wireless device (200) includes one or more processors (202), one or more memories (204), and may additionally include one or more transceivers (206) and/or one or more antennas (208).
- the processor (202) may be configured to control the memories (204) and/or the transceivers (206), and implement the descriptions, functions, procedures, suggestions, methods, and/or operational flowcharts disclosed in this document. For example, the processor (202) may process information in the memory (204) to generate third information/signals, and then transmit a wireless signal including the third information/signals via the transceivers (206). Additionally, the processor (202) may receive a wireless signal including fourth information/signals via the transceivers (206), and then store information obtained from signal processing of the fourth information/signals in the memory (204).
- the memory (204) may be connected to the processor (202) and may store various information related to the operation of the processor (202). For example, the memory (204) may perform some or all of the processes controlled by the processor (202), or may store software codes including instructions for performing the descriptions, functions, procedures, proposals, methods, and/or operational flowcharts disclosed in the present document.
- the processor (202) and the memory (204) may be part of a communication modem/circuit/chip designed to implement wireless communication technology (e.g., LTE, NR).
- the transceiver (206) may be connected to the processor (202) and may transmit and/or receive wireless signals via one or more antennas (208).
- the transceiver (206) may include a transmitter and/or a receiver.
- the transceiver (206) may be used interchangeably with an RF unit.
- a wireless device may also mean a communication modem/circuit/chip.
- one or more protocol layers may be implemented by one or more processors (102, 202).
- processors (102, 202) may implement one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC, SDAP).
- processors (102, 202) may generate one or more Protocol Data Units (PDUs) and/or one or more Service Data Units (SDUs) according to the descriptions, functions, procedures, proposals, methods, and/or operational flowcharts disclosed in this document.
- PDUs Protocol Data Units
- SDUs Service Data Units
- One or more processors (102, 202) may generate messages, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and/or operational flowcharts disclosed in this document.
- One or more processors (102, 202) can generate signals (e.g., baseband signals) including PDUs, SDUs, messages, control information, data or information according to the functions, procedures, suggestions and/or methodologies disclosed herein and provide the signals to one or more transceivers (106, 206).
- One or more processors (102, 202) can receive signals (e.g., baseband signals) from one or more transceivers (106, 206) and obtain PDUs, SDUs, messages, control information, data or information according to the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed herein.
- signals e.g., baseband signals
- the one or more processors (102, 202) may be referred to as a controller, a microcontroller, a microprocessor, or a microcomputer.
- the one or more processors (102, 202) may be implemented by hardware, firmware, software, or a combination thereof.
- ASICs Application Specific Integrated Circuits
- DSPs Digital Signal Processors
- DSPDs Digital Signal Processing Devices
- PLDs Programmable Logic Devices
- FPGAs Field Programmable Gate Arrays
- the descriptions, functions, procedures, suggestions, methods, and/or operational flowcharts disclosed in this document may be implemented using firmware or software, and the firmware or software may be implemented to include modules, procedures, functions, etc.
- the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in this document may be implemented using firmware or software configured to perform one or more of the following: included in one or more processors (102, 202), or stored in one or more memories (104, 204) and driven by one or more of the processors (102, 202).
- the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in this document may be implemented using firmware or software in the form of codes, instructions and/or sets of instructions.
- One or more memories (104, 204) may be coupled to one or more processors (102, 202) and may store various forms of data, signals, messages, information, programs, codes, instructions and/or commands.
- the one or more memories (104, 204) may be comprised of ROM, RAM, EPROM, flash memory, hard drives, registers, cache memory, computer readable storage media and/or combinations thereof.
- the one or more memories (104, 204) may be located internally and/or externally to the one or more processors (102, 202). Additionally, the one or more memories (104, 204) may be coupled to the one or more processors (102, 202) via various technologies, such as wired or wireless connections.
- One or more transceivers (106, 206) can transmit user data, control information, wireless signals/channels, etc., as described in the methods and/or flowcharts of this document, to one or more other devices.
- One or more transceivers (106, 206) can receive user data, control information, wireless signals/channels, etc., as described in the descriptions, functions, procedures, suggestions, methods and/or flowcharts of this document, from one or more other devices.
- one or more transceivers (106, 206) can be coupled to one or more processors (102, 202) and can transmit and receive wireless signals.
- one or more processors (102, 202) can control one or more transceivers (106, 206) to transmit user data, control information, or wireless signals to one or more other devices. Additionally, one or more processors (102, 202) may control one or more transceivers (106, 206) to receive user data, control information, or wireless signals from one or more other devices. Additionally, one or more transceivers (106, 206) may be coupled to one or more antennas (108, 208), and one or more transceivers (106, 206) may be configured to transmit and receive user data, control information, wireless signals/channels, and the like, as described in the descriptions, functions, procedures, proposals, methods, and/or operational flowcharts disclosed herein, via one or more antennas (108, 208).
- one or more antennas may be multiple physical antennas, or multiple logical antennas (e.g., antenna ports).
- One or more transceivers (106, 206) may convert received user data, control information, wireless signals/channels, etc. from RF band signals to baseband signals in order to process the received user data, control information, wireless signals/channels, etc. using one or more processors (102, 202).
- One or more transceivers (106, 206) may convert processed user data, control information, wireless signals/channels, etc. from baseband signals to RF band signals using one or more processors (102, 202).
- one or more transceivers (106, 206) may include an (analog) oscillator and/or filter.
- FIG. 19 illustrates a signal processing circuit for a transmission signal according to an embodiment of the present disclosure.
- the embodiment of FIG. 19 can be combined with various embodiments of the present disclosure.
- the signal processing circuit (1000) may include a scrambler (1010), a modulator (1020), a layer mapper (1030), a precoder (1040), a resource mapper (1050), and a signal generator (1060).
- the operations/functions of FIG. 19 may be performed in the processor (102, 202) and/or the transceiver (106, 206) of FIG. 18.
- the hardware elements of FIG. 19 may be implemented in the processor (102, 202) and/or the transceiver (106, 206) of FIG. 18.
- blocks 1010 to 1060 may be implemented in the processor (102, 202) of FIG. 18.
- blocks 1010 to 1050 may be implemented in the processor (102, 202) of FIG. 18, and block 1060 may be implemented in the transceiver (106, 206) of FIG. 18.
- the codeword can be converted into a wireless signal through the signal processing circuit (1000) of Fig. 19.
- the codeword is an encoded bit sequence of an information block.
- the information block can include a transport block (e.g., UL-SCH transport block, DL-SCH transport block).
- the wireless signal can be transmitted through various physical channels (e.g., PUSCH, PDSCH).
- the codeword can be converted into a bit sequence scrambled by a scrambler (1010).
- the scramble sequence used for scrambling is generated based on an initialization value, and the initialization value may include ID information of the wireless device, etc.
- the scrambled bit sequence can be modulated into a modulation symbol sequence by a modulator (1020).
- the modulation scheme may include pi/2-BPSK (pi/2-Binary Phase Shift Keying), m-PSK (m-Phase Shift Keying), m-QAM (m-Quadrature Amplitude Modulation), etc.
- the complex modulation symbol sequence can be mapped to one or more transmission layers by a layer mapper (1030).
- the modulation symbols of each transmission layer can be mapped to the corresponding antenna port(s) by a precoder (1040) (precoding).
- the output z of the precoder (1040) can be obtained by multiplying the output y of the layer mapper (1030) by a precoding matrix W of N*M.
- N is the number of antenna ports
- M is the number of transmission layers.
- the precoder (1040) can perform precoding after performing transform precoding (e.g., DFT transform) on complex modulation symbols. Additionally, the precoder (1040) can perform precoding without performing transform precoding.
- the resource mapper (1050) can map modulation symbols of each antenna port to time-frequency resources.
- the time-frequency resources can include a plurality of symbols (e.g., CP-OFDMA symbols, DFT-s-OFDMA symbols) in the time domain and a plurality of subcarriers in the frequency domain.
- the signal generator (1060) generates a wireless signal from the mapped modulation symbols, and the generated wireless signal can be transmitted to another device through each antenna.
- the signal generator (1060) can include an Inverse Fast Fourier Transform (IFFT) module, a Cyclic Prefix (CP) inserter, a Digital-to-Analog Converter (DAC), a frequency uplink converter, etc.
- IFFT Inverse Fast Fourier Transform
- CP Cyclic Prefix
- DAC Digital-to-Analog Converter
- a signal processing process for a received signal in a wireless device can be configured in reverse order of the signal processing process (1010 to 1060) of FIG. 19.
- a wireless device e.g., 100, 200 of FIG. 18
- the received wireless signal can be converted into a baseband signal through a signal restorer.
- the signal restorer can include a frequency downlink converter, an analog-to-digital converter (ADC), a CP remover, and a fast Fourier transform (FFT) module.
- ADC analog-to-digital converter
- FFT fast Fourier transform
- a signal processing circuit for a received signal may include a signal restorer, a resource de-mapper, a postcoder, a demodulator, a de-scrambler and a decoder.
- FIG. 20 illustrates a wireless device according to an embodiment of the present disclosure.
- the wireless device may be implemented in various forms depending on the use-case/service (see FIG. 17).
- the embodiment of FIG. 20 may be combined with various embodiments of the present disclosure.
- the wireless device (100, 200) corresponds to the wireless device (100, 200) of FIG. 18 and may be composed of various elements, components, units/units, and/or modules.
- the wireless device (100, 200) may include a communication unit (110), a control unit (120), a memory unit (130), and an additional element (140).
- the communication unit may include a communication circuit (112) and a transceiver(s) (114).
- the communication circuit (112) may include one or more processors (102, 202) and/or one or more memories (104, 204) of FIG. 18.
- the transceiver(s) (114) may include one or more transceivers (106, 206) and/or one or more antennas (108, 208) of FIG. 18.
- the control unit (120) is electrically connected to the communication unit (110), the memory unit (130), and the additional elements (140) and controls overall operations of the wireless device.
- the control unit (120) may control electrical/mechanical operations of the wireless device based on programs/codes/commands/information stored in the memory unit (130).
- control unit (120) may transmit information stored in the memory unit (130) to an external device (e.g., another communication device) via a wireless/wired interface through the communication unit (110), or may store information received from an external device (e.g., another communication device) via a wireless/wired interface in the memory unit (130).
- an external device e.g., another communication device
- the control unit (120) may transmit information stored in the memory unit (130) to an external device (e.g., another communication device) via a wireless/wired interface through the communication unit (110), or may store information received from an external device (e.g., another communication device) via a wireless/wired interface in the memory unit (130).
- the additional element (140) may be configured in various ways depending on the type of the wireless device.
- the additional element (140) may include at least one of a power unit/battery, an input/output unit (I/O unit), a driving unit, and a computing unit.
- the wireless device may be implemented in the form of a robot (FIG. 17, 100a), a vehicle (FIG. 17, 100b-1, 100b-2), an XR device (FIG. 17, 100c), a portable device (FIG. 17, 100d), a home appliance (FIG. 17, 100e), an IoT device (FIG.
- Wireless devices may be mobile or stationary, depending on the use/service.
- control unit (120) may be composed of a set of a communication control processor, an application processor, an ECU (Electronic Control Unit), a graphic processing processor, a memory control processor, etc.
- memory unit (130) may be composed of a RAM (Random Access Memory), a DRAM (Dynamic RAM), a ROM (Read Only Memory), a flash memory, a volatile memory, a non-volatile memory, and/or a combination thereof.
- FIG. 21 illustrates a portable device according to an embodiment of the present disclosure.
- the portable device may include a smart phone, a smart pad, a wearable device (e.g., a smart watch, a smart glass), a portable computer (e.g., a laptop, etc.).
- the portable device may be referred to as a Mobile Station (MS), a User Terminal (UT), a Mobile Subscriber Station (MSS), a Subscriber Station (SS), an Advanced Mobile Station (AMS), or a Wireless Terminal (WT).
- the embodiment of FIG. 21 may be combined with various embodiments of the present disclosure.
- the portable device (100) may include an antenna unit (108), a communication unit (110), a control unit (120), a memory unit (130), a power supply unit (140a), an interface unit (140b), and an input/output unit (140c).
- the antenna unit (108) may be configured as a part of the communication unit (110).
- Blocks 110 to 130/140a to 140c correspond to blocks 110 to 130/140 of FIG. 20, respectively.
- the communication unit (110) can transmit and receive signals (e.g., data, control signals, etc.) with other wireless devices and base stations.
- the control unit (120) can control components of the portable device (100) to perform various operations.
- the control unit (120) can include an AP (Application Processor).
- the memory unit (130) can store data/parameters/programs/codes/commands required for operating the portable device (100). In addition, the memory unit (130) can store input/output data/information, etc.
- the power supply unit (140a) supplies power to the portable device (100) and can include a wired/wireless charging circuit, a battery, etc.
- the interface unit (140b) can support connection between the portable device (100) and other external devices.
- the input/output unit (140c) obtains information/signals (e.g., touch, text, voice, image, video) input by the user, and the obtained information/signals can be stored in the memory unit (130).
- the communication unit (110) converts the information/signals stored in the memory into wireless signals, and can directly transmit the converted wireless signals to other wireless devices or to a base station.
- the communication unit (110) can receive wireless signals from other wireless devices or base stations, and then restore the received wireless signals to the original information/signals.
- the restored information/signals can be stored in the memory unit (130) and then output in various forms (e.g., text, voice, image, video, haptic) through the input/output unit (140c).
- FIG. 22 illustrates a vehicle or an autonomous vehicle according to an embodiment of the present disclosure.
- the vehicle or autonomous vehicle may be implemented as a mobile robot, a car, a train, a manned/unmanned aerial vehicle (AV), a ship, etc.
- the embodiment of FIG. 22 may be combined with various embodiments of the present disclosure.
- a vehicle or autonomous vehicle may include an antenna unit (108), a communication unit (110), a control unit (120), a driving unit (140a), a power supply unit (140b), a sensor unit (140c), and an autonomous driving unit (140d).
- the antenna unit (108) may be configured as a part of the communication unit (110).
- Blocks 110/130/140a to 140d correspond to blocks 110/130/140 of FIG. 20, respectively.
- the communication unit (110) can transmit and receive signals (e.g., data, control signals, etc.) with external devices such as other vehicles, base stations (e.g., base stations, road side units, etc.), servers, etc.
- the control unit (120) can control elements of the vehicle or autonomous vehicle (100) to perform various operations.
- the control unit (120) can include an ECU (Electronic Control Unit).
- the drive unit (140a) can drive the vehicle or autonomous vehicle (100) on the ground.
- the drive unit (140a) can include an engine, a motor, a power train, wheels, brakes, a steering device, etc.
- the power supply unit (140b) supplies power to the vehicle or autonomous vehicle (100) and can include a wired/wireless charging circuit, a battery, etc.
- the autonomous driving unit (140d) may implement a technology for maintaining a driving lane, a technology for automatically controlling speed such as adaptive cruise control, a technology for automatically driving along a set path, a technology for automatically setting a path and driving when a destination is set, etc.
- the communication unit (110) can receive map data, traffic information data, etc. from an external server.
- the autonomous driving unit (140d) can generate an autonomous driving route and a driving plan based on the acquired data.
- the control unit (120) can control the driving unit (140a) so that the vehicle or autonomous vehicle (100) moves along the autonomous driving route according to the driving plan (e.g., speed/direction control).
- the communication unit (110) can irregularly/periodically acquire the latest traffic information data from an external server and can acquire surrounding traffic information data from surrounding vehicles.
- the sensor unit (140c) can acquire vehicle status and surrounding environment information during autonomous driving.
- the autonomous driving unit (140d) can update the autonomous driving route and driving plan based on the newly acquired data/information.
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Abstract
Description
| 장치 별 최대 데이터 속도 | 1 Tbps |
| E2E 지연 | 1 ms |
| 최대 스펙트럼 효율 | 100bps/Hz |
| 이동성 지원 | 최대 1000km/hr |
| 위성 통합 | 완전히 |
| AI | 완전히 |
| 자율 주행 | 완전히 |
| XR | 완전히 |
| 햅틱 통신 | 완전히 |
| CP 타입 | SCS (15*2u) | Nslot symb | Nframe,u slot | Nsubframe,u slot |
| 노멀 CP | 15kHz (u=0) | 14 | 10 | 1 |
| 30kHz (u=1) | 14 | 20 | 2 | |
| 60kHz (u=2) | 14 | 40 | 4 | |
| 120kHz (u=3) | 14 | 80 | 8 | |
| 240kHz (u=4) | 14 | 160 | 16 | |
| 확장 CP | 60kHz (u=2) | 12 | 40 | 4 |
| 캐스트 타입 지시자 값 | 캐스트 타입 |
| 00 | 브로드캐스트 |
| 01 | HARQ-ACK 정보가 ACK 또는 NACK을 포함하는 경우 그룹캐스트 |
| 10 | 유니캐스트 |
| 11 | HARQ-ACK 정보가 오직 NACK을 포함하는 경우 그룹캐스트 |
| NPSFCH CS | m0 | |||||
| 순환 시프트 페어 인덱스 0 | 순환 시프트 페어 인덱스 1 | 순환 시프트 페어 인덱스 2 | 순환 시프트 페어 인덱스 3 | 순환 시프트 페어 인덱스 4 | 순환 시프트 페어 인덱스 5 | |
| 1 | 0 | - | - | - | - | - |
| 2 | 0 | 3 | - | - | - | - |
| 3 | 0 | 2 | 4 | - | - | - |
| 6 | 0 | 1 | 2 | 3 | 4 | 5 |
| SL CBR | |
| 정의 | 슬롯 n에서 측정된 SL CBR(SL Channel Busy Ratio)은 단말이 측정한 SL RSSI가 CBR 측정 윈도우 [n-a, n-1]에 걸쳐 감지된 (미리) 설정된 임계값을 초과하는 자원 풀의 서브-채널의 부분으로 정의된다. 여기서 a는 상위 계층 파라미터 sl-TimeWindowSizeCBR에 따라 100 또는 100·2μ 슬롯과 같다. |
| 적용 가능 | RRC_IDLE 인트라-주파수, RRC_IDLE 인터-주파수, RRC_CONNECTED 인트라-주파수, RRC_CONNECTED 인터-주파수 |
| SL RSSI | |
| 정의 | SL RSSI(Sidelink Receiver Signal Strength Indicator)는 두 번째 OFDM 심볼부터 시작하는, PSCCH와 PSSCH를 위해 설정된 슬롯의 OFDM 심볼에서 설정된 서브-채널에서 관찰되는 총 수신 전력([W] 단위)의 선형 평균으로 정의된다. 주파수 범위 1의 경우, SL RSSI의 기준점은 단말의 안테나 커넥터이다. 주파수 범위 2의 경우, SL RSSI는 주어진 수신기 분기에 해당하는 안테나 요소로부터 결합된 신호를 기반으로 측정된다. 주파수 범위 1과 2의 경우, 수신기 다이버시티가 단말에 의해 사용되는 경우, 보고된 SL RSSI 값은 개별 수신기 분기의 해당 SL RSSI보다 낮지 않아야 한다. |
| 적용 가능 | RRC_IDLE 인트라-주파수, RRC_IDLE 인터-주파수, RRC_CONNECTED 인트라-주파수, RRC_CONNECTED 인터-주파수 |
| 정의 | 슬롯 n에서 평가된 SL CR(Sidelink Channel Occupancy Ratio)은 슬롯 [n-a, n-1]에서 전송에 사용되고 슬롯 [n, n+b]에서 승인된 서브-채널의 총 수를 [n-a, n+b]에 걸쳐 전송 풀에 설정된 서브-채널의 총 수로 나눈 것으로 정의된다. |
| 적용 가능 | RRC_IDLE 인트라-주파수, RRC_IDLE 인터-주파수, RRC_CONNECTED 인트라-주파수, RRC_CONNECTED 인터-주파수 |
Claims (20)
- 제 1 장치가 무선 통신을 수행하는 방법에 있어서,제 1 유형 빔과 관련된 제 1 자원 집합에 대한 정보를 획득하는 단계;제 2 유형 빔과 관련된 제 2 자원 집합에 대한 정보를 획득하는 단계; 및상기 제 1 자원 집합을 기반으로, 상기 제 2 자원 집합 내 적어도 하나의 자원을 예약하기 위한 제어 신호를 제 2 장치에게 전송하는 단계;를 포함하되,상기 제 1 유형 빔은 방향성을 가지지 않는 유형의 빔을 포함하고, 및상기 제 2 유형 빔은 방향성을 가지는 유형의 빔을 포함하는, 방법.
- 제 1 항에 있어서,상기 제 1 장치는 상기 제 2 자원 집합 내 상기 적어도 하나의 자원을 예약하기 위한 상기 제어 신호를 상기 제 1 자원 집합을 기반으로 전송하도록 허용되는, 방법.
- 제 1 항에 있어서,상기 제 1 장치는 상기 제 1 자원 집합 내 적어도 하나의 자원을 예약하기 위한 제어 신호를 상기 제 2 자원 집합을 기반으로 전송하도록 허용되지 않는, 방법.
- 제 1 항에 있어서,상기 제 2 자원 집합 내 상기 적어도 하나의 자원을 예약하기 위한 상기 제어 신호는 상기 제 2 자원 집합 내 상기 적어도 하나의 자원과 관련된 빔 식별자 정보를 포함하는, 방법.
- 제 1 항에 있어서,상기 제 2 자원 집합 내 상기 적어도 하나의 자원은 상기 제 2 장치의 빔 측정 또는 상기 제 1 장치의 전송을 위해 예약되는, 방법.
- 제 5 항에 있어서,상기 제 2 자원 집합 내 상기 적어도 하나의 자원을 기반으로 측정된 상기 빔 측정의 결과는, 상기 제 1 자원 집합과 관련된 상기 제 1 유형 빔을 기반으로, 상기 제 2 장치로부터 수신되는, 방법.
- 제 1 항에 있어서,상기 제 2 자원 집합 내 상기 적어도 하나의 자원은 상기 제 1 자원 집합에 대한 센싱을 기반으로 선택되는, 방법.
- 제 1 항에 있어서,상기 제 2 자원 집합 내 상기 적어도 하나의 자원은 상기 제 2 자원 집합에 대한 센싱을 기반으로 선택되고, 및상기 센싱은 상기 적어도 하나의 자원 상에서 송신을 위한 빔 방향과 관련된 수신 빔 방향에 대하여 수행되는, 방법.
- 제 1 항에 있어서,상기 제 1 자원 집합 내 자원 예약 또는 자원 선택을 위한 제 1 후보 자원 집합과 상기 제 2 자원 집합 내 자원 예약 또는 자원 선택을 위한 제 2 후보 자원 집합은 독립적으로 설정되는, 방법.
- 제 9 항에 있어서,상기 제 1 후보 자원 집합에서 자원 배제를 위해 사용되는 제 1 임계치는 상기 제 2 후보 자원 집합에서 자원 배제를 위해 사용되는 제 2 임계치와 독립적으로 설정되는, 방법.
- 제 1 항에 있어서,상기 제 1 자원 집합 내 제 1 선호 자원 집합 또는 제 1 비선호 자원 집합과 상기 제 2 자원 집합 내 제 2 선호 자원 집합 또는 제 2 비선호 자원 집합은 독립적으로 설정되는, 방법.
- 제 1 항에 있어서,센싱을 기반으로 자원 배제를 수행한 이후, 전체 후보 자원 대비 남은 후보 자원의 비율이 임계치 이하인 것을 기반으로, 상기 제 1 자원 집합 내 후보 자원은 상기 제 2 자원 집합 내 후보 자원보다 우선적으로 상기 남은 후보 자원에 포함되는, 방법.
- 제 1 항에 있어서,상기 제 1 자원 집합 또는 상기 제 2 자원 집합 내에서 자원 예약 또는 자원 선택은, 반복 전송에 대한 센싱 결과의 합을 기반으로 수행되는, 방법.
- 무선 통신을 수행하도록 설정된 제 1 장치에 있어서,적어도 하나의 송수신기;적어도 하나의 프로세서; 및상기 적어도 하나의 프로세서에 연결되고 명령어들을 저장하는 적어도 하나의 메모리를 포함하되, 상기 명령어들은 상기 적어도 하나의 프로세서에 의해 실행되는 것을 기반으로 상기 제 1 장치로 하여금:제 1 유형 빔과 관련된 제 1 자원 집합에 대한 정보를 획득하게 하고;제 2 유형 빔과 관련된 제 2 자원 집합에 대한 정보를 획득하게 하고; 및상기 제 1 자원 집합을 기반으로, 상기 제 2 자원 집합 내 적어도 하나의 자원을 예약하기 위한 제어 신호를 제 2 장치에게 전송하게 하되,상기 제 1 유형 빔은 방향성을 가지지 않는 유형의 빔을 포함하고, 및상기 제 2 유형 빔은 방향성을 가지는 유형의 빔을 포함하는, 제 1 장치.
- 제 1 장치를 제어하도록 설정된 프로세싱 장치에 있어서,적어도 하나의 프로세서; 및상기 적어도 하나의 프로세서에 연결되고 명령어들을 저장하는 적어도 하나의 메모리를 포함하되, 상기 명령어들은 상기 적어도 하나의 프로세서에 의해 실행되는 것을 기반으로 상기 제 1 장치로 하여금:제 1 유형 빔과 관련된 제 1 자원 집합에 대한 정보를 획득하게 하고;제 2 유형 빔과 관련된 제 2 자원 집합에 대한 정보를 획득하게 하고; 및상기 제 1 자원 집합을 기반으로, 상기 제 2 자원 집합 내 적어도 하나의 자원을 예약하기 위한 제어 신호를 제 2 장치에게 전송하게 하되,상기 제 1 유형 빔은 방향성을 가지지 않는 유형의 빔을 포함하고, 및상기 제 2 유형 빔은 방향성을 가지는 유형의 빔을 포함하는, 프로세싱 장치.
- 명령어들을 기록하고 있는 비일시적 컴퓨터 판독가능 저장 매체로서,상기 명령어들은, 실행될 때, 제 1 장치로 하여금:제 1 유형 빔과 관련된 제 1 자원 집합에 대한 정보를 획득하게 하고;제 2 유형 빔과 관련된 제 2 자원 집합에 대한 정보를 획득하게 하고; 및상기 제 1 자원 집합을 기반으로, 상기 제 2 자원 집합 내 적어도 하나의 자원을 예약하기 위한 제어 신호를 제 2 장치에게 전송하게 하되,상기 제 1 유형 빔은 방향성을 가지지 않는 유형의 빔을 포함하고, 및상기 제 2 유형 빔은 방향성을 가지는 유형의 빔을 포함하는, 비일시적 컴퓨터 판독가능 저장 매체.
- 제 2 장치가 무선 통신을 수행하는 방법에 있어서,제 1 유형 빔과 관련된 제 1 자원 집합에 대한 정보를 획득하는 단계;제 2 유형 빔과 관련된 제 2 자원 집합에 대한 정보를 획득하는 단계; 및상기 제 1 자원 집합을 기반으로, 상기 제 2 자원 집합 내 적어도 하나의 자원을 예약하기 위한 제어 신호를 제 1 장치로부터 수신하는 단계;를 포함하되,상기 제 1 유형 빔은 방향성을 가지지 않는 유형의 빔을 포함하고, 및상기 제 2 유형 빔은 방향성을 가지는 유형의 빔을 포함하는, 방법.
- 무선 통신을 수행하도록 설정된 제 2 장치에 있어서,적어도 하나의 송수신기;적어도 하나의 프로세서; 및상기 적어도 하나의 프로세서에 연결되고 명령어들을 저장하는 적어도 하나의 메모리를 포함하되, 상기 명령어들은 상기 적어도 하나의 프로세서에 의해 실행되는 것을 기반으로 상기 제 2 장치로 하여금:제 1 유형 빔과 관련된 제 1 자원 집합에 대한 정보를 획득하게 하고;제 2 유형 빔과 관련된 제 2 자원 집합에 대한 정보를 획득하게 하고; 및상기 제 1 자원 집합을 기반으로, 상기 제 2 자원 집합 내 적어도 하나의 자원을 예약하기 위한 제어 신호를 제 1 장치로부터 수신하게 하되,상기 제 1 유형 빔은 방향성을 가지지 않는 유형의 빔을 포함하고, 및상기 제 2 유형 빔은 방향성을 가지는 유형의 빔을 포함하는, 제 2 장치.
- 제 2 장치를 제어하도록 설정된 프로세싱 장치에 있어서,적어도 하나의 프로세서; 및상기 적어도 하나의 프로세서에 연결되고 명령어들을 저장하는 적어도 하나의 메모리를 포함하되, 상기 명령어들은 상기 적어도 하나의 프로세서에 의해 실행되는 것을 기반으로 상기 제 2 장치로 하여금:제 1 유형 빔과 관련된 제 1 자원 집합에 대한 정보를 획득하게 하고;제 2 유형 빔과 관련된 제 2 자원 집합에 대한 정보를 획득하게 하고; 및상기 제 1 자원 집합을 기반으로, 상기 제 2 자원 집합 내 적어도 하나의 자원을 예약하기 위한 제어 신호를 제 1 장치로부터 수신하게 하되,상기 제 1 유형 빔은 방향성을 가지지 않는 유형의 빔을 포함하고, 및상기 제 2 유형 빔은 방향성을 가지는 유형의 빔을 포함하는, 프로세싱 장치.
- 명령어들을 기록하고 있는 비일시적 컴퓨터 판독가능 저장 매체로서,상기 명령어들은, 실행될 때, 제 2 장치로 하여금:제 1 유형 빔과 관련된 제 1 자원 집합에 대한 정보를 획득하게 하고;제 2 유형 빔과 관련된 제 2 자원 집합에 대한 정보를 획득하게 하고; 및상기 제 1 자원 집합을 기반으로, 상기 제 2 자원 집합 내 적어도 하나의 자원을 예약하기 위한 제어 신호를 제 1 장치로부터 수신하게 하되,상기 제 1 유형 빔은 방향성을 가지지 않는 유형의 빔을 포함하고, 및상기 제 2 유형 빔은 방향성을 가지는 유형의 빔을 포함하는, 비일시적 컴퓨터 판독가능 저장 매체.
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| EP24832484.0A EP4738719A1 (en) | 2023-06-28 | 2024-06-28 | Method and device for performing communication on basis of beam |
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| KR20230083512 | 2023-06-28 | ||
| KR10-2023-0083512 | 2023-06-28 | ||
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| KR20230093945 | 2023-07-19 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220361050A1 (en) * | 2019-06-27 | 2022-11-10 | Qualcomm Incorporated | Sidelink reservation across frequency bands |
| US20230057174A1 (en) * | 2020-02-13 | 2023-02-23 | Lenovo (Beijing) Ltd. | Method and apparatus for beam-based transmission for sidelink |
| US11617096B2 (en) * | 2019-06-21 | 2023-03-28 | Qualcomm Incorporated | Power saving for downlink control channel monitoring in unlicensed bands |
-
2024
- 2024-06-28 WO PCT/KR2024/009051 patent/WO2025005707A1/ko not_active Ceased
- 2024-06-28 EP EP24832484.0A patent/EP4738719A1/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11617096B2 (en) * | 2019-06-21 | 2023-03-28 | Qualcomm Incorporated | Power saving for downlink control channel monitoring in unlicensed bands |
| US20220361050A1 (en) * | 2019-06-27 | 2022-11-10 | Qualcomm Incorporated | Sidelink reservation across frequency bands |
| US20230057174A1 (en) * | 2020-02-13 | 2023-02-23 | Lenovo (Beijing) Ltd. | Method and apparatus for beam-based transmission for sidelink |
Non-Patent Citations (2)
| Title |
|---|
| MARTIN BEALE, SONY: "Discussion on sidelink beam management on FR2 licensed spectrum", 3GPP DRAFT; R1-2302850; TYPE DISCUSSION; NR_SL_ENH2-CORE, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Online; 20230417 - 20230426, 7 April 2023 (2023-04-07), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052293425 * |
| ZHISONG ZUO, OPPO: "On sidelink beam management in FR2", 3GPP DRAFT; R1-2305424; TYPE DISCUSSION; NR_SL_ENH2-CORE, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Incheon, KR; 20230522 - 20230526, 15 May 2023 (2023-05-15), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052310859 * |
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