CN116530180A - Method and apparatus for performing SL communication based on auxiliary information in NR V2X - Google Patents

Method and apparatus for performing SL communication based on auxiliary information in NR V2X Download PDF

Info

Publication number
CN116530180A
CN116530180A CN202180060083.1A CN202180060083A CN116530180A CN 116530180 A CN116530180 A CN 116530180A CN 202180060083 A CN202180060083 A CN 202180060083A CN 116530180 A CN116530180 A CN 116530180A
Authority
CN
China
Prior art keywords
information related
resource
information
pssch
sci
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202180060083.1A
Other languages
Chinese (zh)
Inventor
黄大成
李承旻
徐翰瞥
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Priority claimed from PCT/KR2021/008739 external-priority patent/WO2022019540A1/en
Publication of CN116530180A publication Critical patent/CN116530180A/en
Pending legal-status Critical Current

Links

Landscapes

  • Mobile Radio Communication Systems (AREA)

Abstract

A method for a first apparatus to perform wireless communication and an apparatus for supporting the same are provided. The method may comprise the steps of: receiving first secondary link control information (SCI) including scheduling information on a physical secondary link shared channel (PSSCH) from a second apparatus through a physical secondary link control channel (PSCCH), the first SCI including information related to priority, information related to frequency resource assignment, information related to time resource assignment, information related to demodulation reference signal (DMRS) pattern, and information related to Modulation and Coding Scheme (MCS); receiving side information including information related to one or more first resources and information related to a service type from a second apparatus through a PSSCH; generating a media access control protocol data unit (MAC PDU); selecting a Sidelink (SL) resource from the one or more first resources based on the MAC PDU being associated with the service type; the MAC PDU is transmitted based on the SL resource.

Description

Method and apparatus for performing SL communication based on auxiliary information in NR V2X
Technical Field
The present disclosure relates to wireless communication systems.
Background
Sidelink (SL) communication is a communication scheme in which a direct link is established between User Equipments (UEs) and the UEs exchange voice and data directly with each other without intervention of an evolved node B (eNB). SL communication is being considered as a solution for eNB overhead due to the rapid growth of data traffic. V2X (vehicle to everything) refers to a communication technology in which vehicles are used to exchange information with other vehicles, pedestrians, objects equipped with infrastructure, and the like. V2X can be classified into four types such as V2V (vehicle-to-vehicle), V2I (vehicle-to-infrastructure), V2N (vehicle-to-network), and V2P (vehicle-to-pedestrian). V2X communication may be provided through a PC5 interface and/or Uu interface.
Furthermore, as more and more communication devices require larger communication capacity, the need for enhanced mobile broadband communication relative to conventional Radio Access Technologies (RATs) is rising. Thus, communication system designs for UEs or services that are sensitive to reliability and delay have also been discussed. Also, next generation radio access technologies based on enhanced mobile broadband communication, large-scale Machine Type Communication (MTC), ultra-reliable low latency communication (URLLC), etc. may be referred to as new RATs (radio access technologies) or NR (new radios). Herein, NR may also support vehicle-to-everything (V2X) communication.
Fig. 1 is a diagram for describing NR based V2X communication compared to V2X communication based on RAT used before NR. The embodiment of fig. 1 may be combined with various embodiments of the present disclosure.
Regarding V2X communication, when discussing RATs used before NR, a scheme of providing security services based on V2X messages such as BSM (basic security message), CAM (cooperative awareness message), and DENM (distributed environment notification message) is focused. The V2X message may include location information, dynamic information, attribute information, and the like. For example, the UE may send a periodic message type CAM and/or an event trigger message type denom to another UE.
Thereafter, regarding V2X communication, various V2X scenes are proposed in NR. For example, such various V2X scenarios may include vehicle queuing, advanced driving, extension sensors, remote driving, and the like.
Disclosure of Invention
Technical problem
Meanwhile, the first device may transmit the assistance information to the second device, and the second device may select the SL resource based on the assistance information. In this case, it is necessary to specifically define the form of the auxiliary information, the condition for using the auxiliary information, and the like.
Technical proposal
In one embodiment, a method for performing wireless communication by a first apparatus is provided. The method may include: receiving first secondary link control information (SCI) including scheduling information for a physical secondary link shared channel (PSSCH) from a second apparatus through a physical secondary link control channel (PSCCH), wherein the first SCI includes information related to priority, information related to frequency resource assignment, information related to time resource assignment, information related to demodulation reference signal (DMRS) pattern, and information related to Modulation and Coding Scheme (MCS); receiving side information from the second apparatus through the PSSCH, the side information including information related to at least one first resource and information related to a service type; generating a Medium Access Control (MAC) Protocol Data Unit (PDU); selecting a Sidelink (SL) resource from at least one first resource based on the MAC PDU being associated with the service type; and transmitting the MAC PDU based on the SL resource.
In one embodiment, a first apparatus adapted to perform wireless communication is provided. The first apparatus may include: one or more memories storing instructions; one or more transceivers; and one or more processors coupled to the one or more memories and the one or more transceivers. For example, one or more processors may execute instructions to: receiving first secondary link control information (SCI) including scheduling information for a physical secondary link shared channel (PSSCH) from a second apparatus through a physical secondary link control channel (PSCCH), wherein the first SCI includes information related to priority, information related to frequency resource assignment, information related to time resource assignment, information related to demodulation reference signal (DMRS) pattern, and information related to Modulation and Coding Scheme (MCS); receiving side information from the second apparatus through the PSSCH, the side information including information related to at least one first resource and information related to a service type; generating a Medium Access Control (MAC) Protocol Data Unit (PDU); selecting a Sidelink (SL) resource from at least one first resource based on the MAC PDU being associated with the service type; and transmitting the MAC PDU based on the SL resource.
Advantageous effects
A User Equipment (UE) can efficiently perform SL communication.
Drawings
Fig. 1 is a diagram for describing NR based V2X communication compared to V2X communication based on RAT used before NR.
Fig. 2 shows a structure of an NR system according to an embodiment of the present disclosure.
Fig. 3 illustrates a radio protocol architecture in accordance with an embodiment of the present disclosure.
Fig. 4 shows a structure of a radio frame of NR based on an embodiment of the present disclosure.
Fig. 5 shows a structure of a slot of an NR frame according to an embodiment of the present disclosure.
Fig. 6 shows an example of BWP according to an embodiment of the present disclosure.
Fig. 7 illustrates a UE performing V2X or SL communication according to an embodiment of the present disclosure.
Fig. 8 illustrates a process of performing V2X or SL communication by a UE based on a transmission mode according to an embodiment of the present disclosure.
Fig. 9 illustrates three broadcast types according to an embodiment of the present disclosure.
Fig. 10 illustrates a resource unit for CBR measurement in accordance with an embodiment of the present disclosure.
Fig. 11 illustrates a process for UE-a to transmit assistance information to UE-B in accordance with an embodiment of the present disclosure.
Fig. 12 illustrates a process for a UE to perform SL communication based on assistance information, according to an embodiment of the present disclosure.
Fig. 13 illustrates a method for performing wireless communication by a first device, in accordance with an embodiment of the present disclosure.
Fig. 14 illustrates a method for performing wireless communication by a second apparatus, in accordance with an embodiment of the present disclosure.
Fig. 15 shows a communication system 1 according to an embodiment of the present disclosure.
Fig. 16 illustrates a wireless device according to an embodiment of the present disclosure.
Fig. 17 illustrates a signal processing circuit for transmitting a signal in accordance with an embodiment of the present disclosure.
Fig. 18 illustrates another example of a wireless device according to an embodiment of the present disclosure.
Fig. 19 illustrates a handheld device in accordance with an embodiment of the present disclosure.
Fig. 20 illustrates a vehicle or autonomous vehicle in accordance with an embodiment of the present disclosure.
Detailed Description
In this disclosure, "a or B" may mean "a only", "B only" or "both a and B". In other words, in the present disclosure, "a or B" may be interpreted as "a and/or B". For example, in this disclosure, "A, B or C" may mean any combination of "a only", "B only", "C only" or "A, B, C".
A slash (/) or comma as used in this disclosure may mean "and/or". For example, "A/B" may mean "A and/or B". Thus, "a/B" may mean "a only", "B only" or "both a and B". For example, "A, B, C" may mean "A, B or C".
In the present disclosure, "at least one of a and B" may mean "a only", "B only", or "both a and B". In addition, in the present disclosure, the expression "at least one of a or B" or "at least one of a and/or B" may be interpreted as "at least one of a and B".
In addition, in the present disclosure, "at least one of A, B and C" may mean "a only", "B only", "C only", or "A, B and C in any combination. In addition, "at least one of A, B or C" or "at least one of A, B and/or C" may mean "at least one of A, B and C".
In addition, brackets used in this disclosure may mean "for example". Specifically, when indicated as "control information (PDCCH)", this may mean that "PDCCH" is proposed as an example of "control information". In other words, the "control information" of the present disclosure is not limited to "PDCCH", and "PDDCH" may be proposed as an example of the "control information". Specifically, when indicated as "control information (i.e., PDCCH)", this may also mean that "PDCCH" is proposed as an example of "control information".
The technical features respectively described in a drawing in the present disclosure may be implemented separately or may be implemented simultaneously.
The techniques described below may be used in various wireless communication systems such as Code Division Multiple Access (CDMA), frequency Division Multiple Access (FDMA), time Division Multiple Access (TDMA), orthogonal Frequency Division Multiple Access (OFDMA), single carrier frequency division multiple access (SC-FDMA), etc. CDMA may be implemented using a radio technology such as Universal Terrestrial Radio Access (UTRA) or CDMA-2000. TDMA may be implemented using radio technologies such as global system for mobile communications (GSM)/General Packet Radio Service (GPRS)/enhanced data rates for GSM evolution (EDGE). OFDMA may be implemented using radio technologies such as Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, evolved UTRA (E-UTRA), and so on. IEEE 802.16m is an evolving version of IEEE 802.16e and provides backward compatibility for IEEE 802.16 e-based systems. UTRA is part of Universal Mobile Telecommunications System (UMTS). The third generation partnership project (3 GPP) Long Term Evolution (LTE) is part of evolved UMTS (E-UMTS) that uses E-UTRA. The 3GPP LTE uses OFDMA in the downlink and SC-FDMA in the uplink. LTE-advanced (LTE-a) is an evolution of LTE.
The 5G NR is an LTE-a successor technology corresponding to a novel completely new mobile communication system having characteristics of high performance, low latency, high availability, and the like. The 5G NR may use resources including all available frequency spectrums of a low frequency band less than 1GHz, an intermediate frequency band from 1GHz to 10GHz, and a high frequency (millimeter wave) of 24GHz or more, and the like.
For clarity of description, the following description will focus mainly on LTE-a or 5G NR. However, technical features according to embodiments of the present disclosure will not be limited thereto.
Fig. 2 shows a structure of an NR system according to an embodiment of the present disclosure. The embodiment of fig. 2 may be combined with various embodiments of the present disclosure.
Referring to fig. 2, a next generation radio access network (NG-RAN) may include a BS 20 providing user plane and control plane protocol termination to a UE 10. For example, the BS 20 may include a next generation node B (gNB) and/or an evolved node B (eNB). For example, the UE 10 may be fixed or mobile and may be referred to as other terminology such as a Mobile Station (MS), a User Terminal (UT), a Subscriber Station (SS), a Mobile Terminal (MT), a wireless device, etc. For example, a BS may be referred to as a fixed station that communicates with the UEs 10 and may be referred to as other terminology such as a Base Transceiver System (BTS), an Access Point (AP), and the like.
The embodiment of fig. 2 illustrates a case where only the gNB is included. BS 20 may be interconnected via an Xn interface. The BS 20 may be interconnected via a fifth generation (5G) core network (5 GC) and NG interface. More specifically, the BS 20 may be connected to an access and mobility management function (AMF) 30 via an NG-C interface, and may be connected to a User Plane Function (UPF) 30 via an NG-U interface.
The radio interface protocol layers between the UE and the network may be classified into a first layer (L1), a second layer (L2), and a third layer (L3) based on the lower three layers of the Open System Interconnection (OSI) model well known in communication systems. Wherein a Physical (PHY) layer belonging to the first layer provides an information transfer service using a physical channel, and a Radio Resource Control (RRC) layer located at the third layer controls radio resources between the UE and the network. For this, the RRC layer exchanges RRC messages between the UE and the BS layer.
Fig. 3 illustrates a radio protocol architecture in accordance with an embodiment of the present disclosure. The embodiment of fig. 3 may be combined with various embodiments of the present disclosure. Specifically, (a) in fig. 3 shows a radio protocol stack of a user plane for Uu communication, and (b) in fig. 3 shows a radio protocol stack of a control plane for Uu communication. Fig. 3 (c) shows a radio protocol stack of a user plane for SL communication, and fig. 3 (d) shows a radio protocol stack of a control plane for SL communication.
Referring to fig. 3, a physical layer provides an information transfer service to an upper layer through a physical channel. The physical layer is connected to a Medium Access Control (MAC) layer, which is an upper layer of the physical layer, through a transport channel. Data is transferred between the MAC layer and the physical layer through a transport channel. The transmission channels are classified according to how data is transmitted over the radio interface and what characteristics the data is transmitted.
Data is transferred through a physical channel between different physical layers, i.e., a PHY layer of a transmitter and a PHY layer of a receiver. The physical channel may be modulated using an Orthogonal Frequency Division Multiplexing (OFDM) scheme, and uses time and frequency as radio resources.
The MAC layer provides services to a Radio Link Control (RLC) layer, which is a higher layer of the MAC layer, via a logical channel. The MAC layer provides a function of mapping a plurality of logical channels to a plurality of transport channels. The MAC layer also provides a function of logical channel multiplexing by mapping a plurality of logical channels to a single transport channel. The MAC layer provides a data transmission service through a logical channel.
The RLC layer performs concatenation, segmentation and reassembly of radio link control service data units (RLC SDUs). In order to ensure different quality of service (QoS) required for Radio Bearers (RBs), the RLC layer provides three types of operation modes, namely a Transparent Mode (TM), a Unacknowledged Mode (UM), and an Acknowledged Mode (AM). AM RLC provides error correction through automatic repeat request (ARQ).
The Radio Resource Control (RRC) layer is defined only in the control plane. The RRC layer serves to control logical channels, transport channels, and physical channels associated with configuration, reconfiguration, and release of RBs. The RB is a logical path for data transfer between the UE and the network provided by the first layer (i.e., physical layer or PHY layer) and the second layer (i.e., MAC layer, RLC layer, packet Data Convergence Protocol (PDCP) layer, and Service Data Adaptation Protocol (SDAP) layer).
The functions of the Packet Data Convergence Protocol (PDCP) in the user plane include transmission of user data, header compression, and ciphering. The functions of the Packet Data Convergence Protocol (PDCP) in the control plane include transmission of control plane data and ciphering/integrity protection.
The Service Data Adaptation Protocol (SDAP) layer is defined only in the user plane. The SDAP layer performs a mapping between quality of service (QoS) flows and Data Radio Bearers (DRBs) and QoS Flow ID (QFI) flags in both DL and UL packets.
Configuration of the RB means a process for designating a radio protocol layer and channel properties to provide a specific service and for determining corresponding detailed parameters and operation methods. RBs may then be classified into two types, namely, signaling Radio Bearers (SRBs) and Data Radio Bearers (DRBs). The SRB is used as a path for transmitting RRC messages in the control plane, and the DRB is used as a path for transmitting user data in the user plane.
When an RRC connection is established between the RRC layer of the UE and the RRC layer of the E-UTRAN, the UE is in an RRC CONNECTED (rrc_connected) state, otherwise the UE may be in an RRC IDLE (rrc_idle) state. In the case of NR, an RRC INACTIVE (rrc_inactive) state is additionally defined, and a UE in the rrc_inactive state may maintain a connection with the core network and release its connection with the BS.
Downlink transport channels that transmit (or transport) data from a network to a UE include a Broadcast Channel (BCH) that transmits system information and a downlink Shared Channel (SCH) that transmits other user traffic or control messages. Traffic or control messages of a downlink multicast or broadcast service may be transmitted via a downlink SCH or may be transmitted via a separate downlink Multicast Channel (MCH). In addition, uplink transport channels for transmitting (or transmitting) data from the UE to the network include a Random Access Channel (RACH) for transmitting an initial control message and an uplink Shared Channel (SCH) for transmitting other user traffic or control messages.
Examples of logical channels belonging to a higher layer of a transport channel and mapped to the transport channel may include a Broadcast Control Channel (BCCH), a Paging Control Channel (PCCH), a Common Control Channel (CCCH), a Multicast Control Channel (MCCH), a Multicast Traffic Channel (MTCH), and the like.
Fig. 4 shows a structure of a radio frame of NR according to an embodiment of the present disclosure. The embodiment of fig. 4 may be combined with various embodiments of the present disclosure.
Referring to fig. 4, in NR, a radio frame may be used to perform uplink and downlink transmission. The radio frame is 10ms in length and may be defined as being made up of two fields (HF). A field may include five 1ms Subframes (SFs). A Subframe (SF) may be divided into one or more slots, and the number of slots within the subframe may be determined according to a subcarrier spacing (SCS). Each slot may include 12 or 14 OFDM (a) symbols according to a Cyclic Prefix (CP).
In case of using the normal CP, each slot may include 14 symbols. In case of using the extended CP, each slot may include 12 symbols. Herein, the symbols may include OFDM symbols (or CP-OFDM symbols) and single carrier-FDMA (SC-FDMA) symbols (or discrete fourier transform spread OFDM (DFT-s-OFDM) symbols).
Exemplary Table 1 below shows the number of symbols (N) per slot according to SCS setting (u) in the case of employing normal CP slot symb ) Number of slots per frame (N frame,u slot ) And the number of slots per subframe (N subframe,u slot )。
TABLE 1
SCS(15*2 u ) N slot symb N frame,u slot N subframe ,u slot
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
Table 2 shows examples of the number of symbols per slot, the number of slots per frame, and the number of slots per subframe according to SCS in the case of using the extended CP.
TABLE 2
SCS(15*2 u ) N slot symb N frame,u slot N subframe,u slot
60KHz(u＝2) 12 40 4
In an NR system, OFDM (a) parameter sets (e.g., SCS, CP length, etc.) between a plurality of cells integrated into one UE may be configured differently. Thus, the (absolute time) duration (or interval) of a time resource (e.g., a subframe, a slot, or a TTI) consisting of the same number of symbols, collectively referred to as a Time Unit (TU) for simplicity, may be configured differently in the integrated cell.
In the NR, a plurality of parameter sets or SCSs for supporting various 5G services may be supported. For example, in the case of an SCS of 15kHz, a wide range of conventional cellular bands can be supported, and in the case of an SCS of 30kHz/60kHz, dense cities, lower latency, wider carrier bandwidths can be supported. In the case where the SCS is 60kHz or more, in order to overcome the phase noise, a bandwidth of more than 24.25GHz can be used.
The NR frequency bands can be defined as two different types of frequency ranges. Two different types of frequency ranges may be FR1 and FR2. The values of the frequency ranges may be changed (or varied), for example, two different types of frequency ranges may be as shown in table 3 below. Among frequency ranges used in NR systems, FR1 may mean "a range below 6 GHz", and FR2 may mean "a range above 6 GHz", and may also be referred to as millimeter wave (mmW).
TABLE 3
Frequency range assignment Corresponding frequency range Subcarrier spacing (SCS)
FR1 450MHz–6000MHz 15、30、60kHz
FR2 24250MHz–52600MHz 60、120、240kHz
As described above, the value of the frequency range in the NR system may be changed (or varied). For example, as shown in table 4 below, FR1 may include a bandwidth in the range of 410MHz to 7125 MHz. More specifically, FR1 may include frequency bands of 6GHz (or 5850, 5900, 5925MHz, etc.) and higher. For example, the frequency bands of 6GHz (or 5850, 5900, 5925MHz, etc.) and higher included in FR1 may include unlicensed frequency bands. The unlicensed frequency band may be used for various purposes, such as for vehicle-specific communications (e.g., autopilot).
TABLE 4
Frequency range assignment Corresponding frequency range Subcarrier spacing (SCS)
FR1 410MHz–7125MHz 15、30、60kHz
FR2 24250MHz–52600MHz 60、120、240kHz
Fig. 5 shows a structure of a slot of an NR frame according to an embodiment of the present disclosure. The embodiment of fig. 5 may be combined with various embodiments of the present disclosure.
Referring to fig. 5, a slot includes a plurality of symbols in a time domain. For example, in the case of a normal CP, one slot may include 14 symbols. For example, in the case of the extended CP, one slot may include 12 symbols. Alternatively, in case of the normal CP, one slot may include 7 symbols. However, in the case of the extended CP, one slot may include 6 symbols.
The carrier comprises a plurality of subcarriers in the frequency domain. A Resource Block (RB) may be defined as a plurality of consecutive subcarriers (e.g., 12 subcarriers) in the frequency domain. A bandwidth part (BWP) may be defined as a plurality of consecutive (physical) resource blocks ((P) RBs) in the frequency domain, and the BWP may correspond to one parameter set (e.g., SCS, CP length, etc.). The carrier may include up to N BWP (e.g., 5 BWP). The data communication may be performed via an activated BWP. Each element may be referred to as a Resource Element (RE) in the resource grid, and one complex symbol may be mapped to each element.
Hereinafter, a bandwidth part (BWP) and a carrier will be described in detail.
BWP may be a contiguous set of Physical Resource Blocks (PRBs) within a given parameter set. The PRBs may be selected from a contiguous set of portions of a Common Resource Block (CRB) for a given set of parameters on a given carrier.
For example, the BWP may be at least any one of an active BWP, an initial BWP, and/or a default BWP. For example, the UE may not monitor downlink radio link quality in DL BWP other than active DL BWP on the primary cell (PCell). For example, the UE may not receive a PDCCH, a Physical Downlink Shared Channel (PDSCH), or a channel state information-reference signal (CSI-RS) (excluding RRM) other than the active DL BWP. For example, the UE may not trigger a Channel State Information (CSI) report for the inactive DL BWP. For example, the UE may not transmit a Physical Uplink Control Channel (PUCCH) or a Physical Uplink Shared Channel (PUSCH) outside the active UL BWP. For example, in the downlink case, the initial BWP may be given as a continuous set of RBs (configured by a Physical Broadcast Channel (PBCH)) for a Remaining Minimum System Information (RMSI) control resource set (CORESET). For example, in the case of uplink, the initial BWP may be given by a System Information Block (SIB) for a random access procedure. For example, the default BWP may be configured by a higher layer. For example, the initial value of the default BWP may be the initial DL BWP. To save power, if the UE cannot detect Downlink Control Information (DCI) during a specified period, the UE may switch the active BWP of the UE to a default BWP.
Furthermore, BWP may be defined for SL. The same SL BWP may be used in transmission and reception. For example, the transmitting UE may transmit a SL channel or SL signal on a specific BWP, and the receiving UE may receive the SL channel or SL signal on the specific BWP. In the licensed carrier, the SL BWP may be defined separately from the Uu BWP, and the SL BWP may have configuration signaling separate from the Uu BWP. For example, the UE may receive a configuration for SL BWP from the BS/network. For example, the UE may receive a configuration for Uu BWP from the BS/network. SL BWP is (pre) configured in the carrier for out-of-coverage NR V2X UEs and rrc_idle UEs. For UEs in rrc_connected mode, at least one SL BWP may be activated in the carrier.
Fig. 6 illustrates an example of BWP according to an embodiment of the present disclosure. The embodiment of fig. 6 may be combined with various embodiments of the present disclosure. It is assumed that in the embodiment of fig. 6, the number of BWP is 3.
Referring to fig. 6, a Common Resource Block (CRB) may be a carrier resource block numbered from one end of a carrier band to the other end thereof. In addition, PRBs may be resource blocks numbered within each BWP. Point a may indicate a common reference point for the resource block grid.
BWP may be configured by point a, offset (NstartBWP) with respect to point a, and bandwidth (NsizeBWP). For example, point a may be an external reference point of the PRBs of the carrier, with subcarrier 0 of all parameter sets (e.g., all parameter sets supported by the network on the corresponding carrier) aligned in point a. For example, the offset may be the PRB distance between the lowest subcarrier within a given parameter set and point a. For example, the bandwidth may be the number of PRBs within a given parameter set.
Hereinafter, V2X or SL communication will be described.
The Secondary Link Synchronization Signal (SLSS) may include a primary secondary link synchronization signal (PSSS) and a secondary link synchronization signal (SSSS) as SL specific sequences. The PSSS may be referred to as a secondary link primary synchronization signal (S-PSS), and the SSSS may be referred to as a secondary link secondary synchronization signal (S-SSS). For example, an M sequence of length 127 may be used for S-PSS, and a Golde (Gold) sequence of length 127 may be used for S-SSS. For example, the UE may use the S-PSS for initial signal detection and synchronization acquisition. For example, the UE may use the S-PSS and S-SSS for acquisition of detailed synchronization and for detection of synchronization signal IDs.
The Physical Sidelink Broadcast Channel (PSBCH) may be a (broadcast) channel for transmitting default (system) information that the UE must first know before SL signal transmission/reception. For example, the default information may be information related to SLSS, duplex Mode (DM), time Division Duplex (TDD) uplink/downlink (UL/DL) configuration, information related to resource pool, type of application related to SLSS, subframe offset, broadcast information, etc. For example, to evaluate PSBCH performance, in NR V2X, the payload size of PSBCH may be 56 bits, including 24-bit Cyclic Redundancy Check (CRC).
The S-PSS, S-SSS, and PSBCH may be included in a block format supporting periodic transmission, e.g., a SL Synchronization Signal (SS)/PSBCH block, hereinafter, a sidelink synchronization signal block (S-SSB). The S-SSB may have the same parameter set (i.e., SCS and CP length) as the physical secondary link control channel (PSCCH)/physical secondary link shared channel (PSSCH) in the carrier, and the transmission bandwidth may exist within the (pre) configured Secondary Link (SL) BWP. For example, the S-SSB may have a bandwidth of 11 resource blocks (SB). For example, the PSBCH may exist across 11 RBs. In addition, the frequency location of the S-SSB may be (pre) configured. Thus, the UE does not have to perform hypothesis detection at the frequency to find the S-SSB in the carrier.
Fig. 7 illustrates a UE performing V2X or SL communication according to an embodiment of the present disclosure. The embodiment of fig. 7 may be combined with various embodiments of the present disclosure.
Referring to fig. 7, in V2X or SL communications, the term "UE" may generally refer to a user's UE. However, if a network device such as a BS transmits/receives signals according to a communication scheme between UEs, the BS may also be regarded as a kind of UE. For example, UE 1 may be a first device 100 and UE 2 may be a second device 200.
For example, UE 1 may select a resource unit corresponding to a particular resource in a resource pool meaning a set of resource series. In addition, UE 1 may transmit the SL signal by using the resource unit. For example, a resource pool in which UE 1 can transmit a signal may be configured to UE 2 as a receiving UE, and the signal of UE 1 may be detected in the resource pool.
Herein, if UE1 is within the connection range of the BS, the BS may inform the UE1 of the resource pool. Otherwise, if UE1 is out of the connection range of the BS, another UE may inform UE1 of the resource pool, or UE1 may use a preconfigured resource pool.
In general, a resource pool may be configured in units of a plurality of resources, and each UE may select a unit of one or more resources to use in its SL signaling.
Hereinafter, resource allocation in SL will be described.
Fig. 8 illustrates a process of performing V2X or SL communication by a UE based on a transmission mode according to an embodiment of the present disclosure. The embodiment of fig. 8 may be combined with various embodiments of the present disclosure. In various embodiments of the present disclosure, the transmission mode may be referred to as a mode or a resource allocation mode. Hereinafter, for convenience of explanation, in LTE, a transmission mode may be referred to as an LTE transmission mode. In NR, the transmission mode may be referred to as an NR resource allocation mode.
For example, (a) in fig. 8 shows UE operation related to LTE transmission mode 1 or LTE transmission mode 3. Alternatively, for example, (a) in fig. 8 shows UE operation related to NR resource allocation pattern 1. For example, LTE transmission mode 1 may be applied to conventional SL communication, and LTE transmission mode 3 may be applied to V2X communication.
For example, (b) in fig. 8 shows UE operation related to LTE transmission mode 2 or LTE transmission mode 4. Alternatively, for example, (b) in fig. 8 shows UE operation in relation to NR resource allocation pattern 2.
Referring to (a) in fig. 8, in LTE transmission mode 1, LTE transmission mode 3, or NR resource allocation mode 1, the BS may schedule SL resources to be used by the UE for SL transmission. For example, the BS may perform resource scheduling on UE 1 through PDCCH (e.g., downlink Control Information (DCI)) or RRC signaling (e.g., configuration grant type 1 or configuration grant type 2), and UE 1 may perform V2X or SL communication for UE 2 according to the resource scheduling. For example, UE 1 may transmit secondary link control information (SCI) to UE 2 over a physical secondary link control channel (PSCCH), and thereafter transmit SCI-based data to UE 2 over a physical secondary link shared channel (PSSCH).
Referring to (b) of fig. 8, in LTE transmission mode 2, LTE transmission mode 4, or NR resource allocation mode 2, the UE may determine SL transmission resources within SL resources configured by the BS/network or preconfigured SL resources. For example, the configured SL resources or pre-configured SL resources may be a pool of resources. For example, the UE may autonomously select or schedule resources for SL transmission. For example, the UE may perform SL communication by autonomously selecting resources in the configured resource pool. For example, the UE may autonomously select resources within the selection window by performing sensing and resource (re) selection procedures. For example, sensing may be performed in units of subchannels. In addition, UE 1, which has autonomously selected resources in the resource pool, may transmit SCI to UE 2 through the PSCCH, and thereafter, SCI-based data may be transmitted to UE 2 through the PSSCH.
Fig. 9 illustrates three broadcast types according to an embodiment of the present disclosure. The embodiment of fig. 9 may be combined with various embodiments of the present disclosure. Specifically, (a) in fig. 9 shows broadcast-type SL communication, (b) in fig. 9 shows unicast-type SL communication, and (c) in fig. 9 shows multicast-type SL communication. In the case of unicast-type SL communication, a UE may perform one-to-one communication for another UE. In the case of multicast type SL transmission, the UE may perform SL communication for one or more UEs in a group to which the UE belongs. In various embodiments of the present disclosure, SL multicast communications may be replaced with SL multicast communications, SL one-to-many communications, and the like.
Hereinafter, sidelink (SL) congestion control will be described.
If the UE autonomously determines SL transmission resources, the UE also autonomously determines the size and frequency of use of the resources for use by the UE. Of course, the use of a resource size or frequency of use greater than or equal to a particular level may be limited due to constraints from the network or the like. However, if all UEs use a relatively large amount of resources in a case where many UEs are concentrated in a specific area at a specific time, overall performance may be significantly deteriorated due to mutual interference.
Thus, the UE may need to observe the channel situation. If it is determined that an excessively large amount of resources are consumed, it is preferable that the UE autonomously reduces the use of resources. In the present disclosure, this may be defined as congestion Control (CR). For example, the UE may determine whether the measured energy in the unit time/frequency resources is greater than or equal to a specific level, and may adjust the amount and frequency of use of the transmission resources thereof based on a ratio of the unit time/frequency resources in which the energy greater than or equal to the specific level is observed. In the present disclosure, a ratio of time/frequency resources in which energy greater than or equal to a certain level is observed may be defined as a Channel Busy Ratio (CBR). The UE may measure CBR of the channel/frequency. In addition, the UE may transmit the measured CBR to the network/BS.
Fig. 10 illustrates a resource unit for CBR measurement in accordance with an embodiment of the present disclosure. The embodiment of fig. 10 may be combined with various embodiments of the present disclosure.
Referring to fig. 10, as a result of the UE measuring RSSI based on the sub-channels for a certain period (e.g., 100 ms), CBR may represent the number of sub-channels in which a measurement result value of a Received Signal Strength Indicator (RSSI) has a value greater than or equal to a pre-configured threshold. Alternatively, CBR may represent a ratio of subchannels having a value greater than or equal to a pre-configured threshold among the subchannels for a specific duration. For example, in the embodiment of fig. 10, if it is assumed that the shaded sub-channel is a sub-channel having a value greater than or equal to a pre-configured threshold, CBR may represent the ratio of the shaded sub-channels within a period of 100 ms. In addition, CBR may be reported to the BS.
In addition, congestion control may be necessary in consideration of the priority of traffic (e.g., packets). To this end, for example, the UE may measure a channel occupancy ratio (CR). In particular, the UE may measure CBR, and the UE may determine a maximum value crlimit of channel occupancy k (CRk) that may be occupied by traffic corresponding to each priority (e.g., k) based on CBR. For example, the UE may derive a maximum crlimit of the channel occupancy related to the priority of each service based on a predetermined table of CBR measurements. For example, in the case of traffic with a relatively high priority, the UE may derive a maximum value of a relatively large channel occupancy. Thereafter, the UE may perform congestion control by limiting the sum of channel occupancy of traffic whose priority k is lower than i to a value less than or equal to a specific value. Based on this approach, the channel occupancy can be more severely limited for relatively low priority traffic.
In addition, the UE may perform SL congestion control by using adjustment of transmission power level, dropping packets, determining whether retransmission will be performed, adjustment of transmission RB size (MCS coordination), and the like.
Hereinafter, a hybrid automatic repeat request (HARQ) process will be described.
In the case of SL unicast and SL multicast, HARQ feedback and HARQ combining in the physical layer may be supported. For example, in case that the receiving UE operates in the resource allocation mode 1 or 2, the receiving UE may receive the PSSCH from the transmitting UE, and the receiving UE may transmit HARQ feedback corresponding to the PSSCH to the transmitting UE through a Physical Sidelink Feedback Channel (PSFCH) using a Sidelink Feedback Control Information (SFCI) format.
For example, SL HARQ feedback may be enabled for unicast. In this case, in a non-code block group (non-CBG), the receiving UE may decode the PSCCH targeted to the receiving UE, and when the receiving UE successfully decodes a transport block related to the PSCCH, the receiving UE may generate the HARQ-ACK. Thereafter, the receiving UE may transmit the HARQ-ACK to the transmitting UE. In contrast, after the receiving UE decodes the PSCCH targeted to the receiving UE, if the receiving UE fails to successfully decode a transport block associated with the PSCCH, the receiving UE may generate a HARQ-NACK and the receiving UE may transmit the HARQ-NACK to the transmitting UE.
For example, SL HARQ feedback may be enabled for multicast. For example, during non-CBG, two different types of HARQ feedback options may be supported for multicast.
(1) Multicast option 1: after decoding the PSCCH targeted to the receiving UE, the receiving UE may send a HARQ-NACK to the transmitting UE via the PSFCH if the receiving UE fails to decode a transport block associated with the PSCCH. In contrast, when the receiving UE decodes the PSCCH targeted to the receiving UE, and when the receiving UE successfully decodes the transport block associated with the PSCCH, the receiving UE does not transmit the HARQ-ACK to the transmitting UE.
(2) Multicast option 2: after decoding the PSCCH targeted to the receiving UE, the receiving UE may send a HARQ-NACK to the transmitting UE via the PSFCH if the receiving UE fails to decode a transport block associated with the PSCCH. And, when the receiving UE decodes the PSCCH targeted to the receiving UE and when the receiving UE successfully decodes a transport block associated with the PSCCH, the receiving UE may transmit the HARQ-ACK to the transmitting UE via the PSFCH.
For example, if multicast option 1 is used in SL HARQ feedback, all UEs performing multicast communication may share PSFCH resources. For example, UEs belonging to the same group may transmit HARQ feedback by using the same PSFCH resource.
For example, if multicast option 2 is used in SL HARQ feedback, each UE performing multicast communication may use different PSFCH resources for HARQ feedback transmission. For example, UEs belonging to the same group may transmit HARQ feedback by using different PSFCH resources.
For example, when SL HARQ feedback is enabled for multicast, the receiving UE may determine whether to transmit HARQ feedback to the transmitting UE based on a transmit-receive (TX-RX) distance and/or a Reference Signal Received Power (RSRP).
For example, in the multicast option 1, in case of HARQ feedback based on TX-RX distance, if the TX-RX distance is less than or equal to the communication range requirement, the receiving UE may transmit HARQ feedback in response to the PSSCH to the transmitting UE. Otherwise, if the TX-RX distance is greater than the communication range requirement, the receiving UE may not transmit HARQ feedback in response to the PSSCH to the transmitting UE. For example, the transmitting UE may inform the receiving UE of the location of the transmitting UE through the SCI associated with the PSSCH. For example, the SCI associated with the PSSCH may be a second SCI. For example, the receiving UE may estimate or obtain the TX-RX distance based on the location of the receiving UE and the location of the transmitting UE. For example, the receiving UE may decode the SCI associated with the PSSCH and thus may be aware of the communication range requirements for the PSSCH.
For example, in the case of resource allocation pattern 1, the time (offset) between PSFCH and PSSCH may be configured or preconfigured. In the case of unicast and multicast, if retransmission must be made on SL, it can be indicated to BS by UE in coverage using PUCCH. The transmitting UE may transmit an indication to a serving BS of the transmitting UE in the form of a Scheduling Request (SR)/Buffer Status Report (BSR) instead of the HARQ ACK/NACK. In addition, the BS may schedule SL retransmission resources for the UE even if the BS does not receive the indication. For example, in the case of resource allocation pattern 2, the time (offset) between PSFCH and PSSCH may be configured or preconfigured.
For example, from the perspective of UE transmission in a carrier, TDM between PSCCH/PSSCH and PSFCH may be allowed for the PSFCH format for SL in the slot. For example, a sequence-based PSFCH format with a single symbol may be supported. Herein, the single symbol may not be the AGC duration. For example, the sequence-based PSFCH format may be applied to unicast and multicast.
For example, in a time slot associated with a resource pool, the PSFCH resources may be periodically configured for N time slot durations, or may be preconfigured. For example, N may be configured to one or more values greater than or equal to 1. For example, N may be 1, 2 or 4. For example, HARQ feedback for transmissions in a particular resource pool may be transmitted over PSFCH only on the particular resource pool.
For example, if the transmitting UE transmits the PSSCH to the receiving UE across slots #x to #n, the receiving UE may transmit HARQ feedback in response to the PSSCH to the transmitting UE in slot# (n+a). For example, slot# (n+a) may include PSFCH resources. Herein, for example, a may be a minimum integer greater than or equal to K. For example, K may be the number of logical time slots. In this case, K may be the number of time slots in the resource pool. Alternatively, K may be the number of physical time slots, for example. In this case, K may be the number of slots inside or outside the resource pool.
For example, if the receiving UE transmits HARQ feedback on the PSFCH resources in response to one PSSCH that the transmitting UE transmits to the receiving UE, the receiving UE may determine the frequency and/or code domain of the PSFCH resources based on an implicit mechanism in the configured resource pool. For example, the receiving UE may determine the frequency and/or code domain of the PSFCH resource based on at least one of a slot index associated with the PSCCH/PSSCH/PSFCH, a subchannel associated with the PSCCH/PSSCH, or an identifier identifying each receiving UE in the group of HARQ feedback based on multicast option 2. Additionally/alternatively, for example, the receiving UE may determine a frequency domain and/or a code domain of the PSFCH resource based on at least one of SL RSRP, SINR, L1 source ID, and/or location information.
For example, if the HARQ feedback transmission through the PSFCH of the UE overlaps with the HARQ feedback reception through the PSFCH, the UE may select any one of the HARQ feedback transmission through the PSFCH and the HARQ feedback reception through the PSFCH based on a priority rule. For example, the priority rule may be based at least on a priority indication of the associated PSCCH/PSCCH.
For example, if HARQ feedback transmissions by a UE over a PSFCH overlap for multiple UEs, the UE may select a particular HARQ feedback transmission based on a priority rule. For example, the priority rule may be based on a lowest priority indication of the associated PSCCH/PSCCH.
Hereinafter, the secondary link control information (SCI) will be described.
The control information transmitted by the BS to the UE through the PDCCH may be referred to as Downlink Control Information (DCI), and the control information transmitted by the UE to another UE through the PSCCH may be referred to as SCI. For example, the UE may know the start symbol of the PSCCH and/or the number of symbols of the PSCCH in advance before decoding the PSCCH. For example, the SCI may include SL scheduling information. For example, the UE may send at least one SCI to another UE to schedule the PSSCH. For example, one or more SCI formats may be defined.
For example, the transmitting UE may transmit the SCI to the receiving UE on the PSCCH. The receiving UE may decode one SCI to receive the PSSCH from the transmitting UE.
For example, the transmitting UE may transmit two consecutive SCIs (e.g., level 2 SCIs) on the PSCCH and/or PSSCH to the receiving UE. The receiving UE may decode two consecutive SCIs (e.g., level 2 SCIs) to receive the PSSCH from the transmitting UE. For example, if the SCI configuration field is divided into two groups in view of a (relatively) high SCI payload size, the SCI comprising the first SCI configuration field group may be referred to as a first SCI or a first SCI, and the SCI comprising the second SCI configuration field group may be referred to as a second SCI or a second SCI. For example, the transmitting UE may transmit the first SCI to the receiving UE over the PSCCH. For example, the transmitting UE may transmit the second SCI to the receiving UE on the PSCCH and/or PSSCH. For example, the second SCI may be transmitted to the receiving UE over a (separate) PSCCH or may be transmitted in a piggybacked manner with the data over a PSSCH. For example, two consecutive SCIs may also be applied to different transmissions (e.g., unicast, broadcast, or multicast).
For example, the transmitting UE may transmit all or part of information described below to the receiving UE through the SCI. Herein, for example, the transmitting UE may transmit all or part of information described below to the receiving UE through the first SCI and/or the second SCI.
PSSCH and/or PSCCH related resource allocation information, e.g., number/location of time/frequency resources, resource reservation information (e.g., time period), and/or
-SL CSI report request indicator or SL (L1) RSRP (and/or SL (L1) RSRQ and/or SL (L1) RSSI) report request indicator, and/or
SL CSI transmit indicator (or SL (L1) RSRP (and/or SL (L1) RSRQ and/or SL (L1) RSSI) information transmit indicator) on the PSSCH), and/or
-Modulation Coding Scheme (MCS) information, and/or
-transmit power information, and/or
-L1 destination ID information and/or L1 source ID information, and/or
-SL HARQ process ID information, and/or
-New Data Indicator (NDI) information, and/or
Redundancy Version (RV) information, and/or
QoS information (related to traffic/packets to be transmitted), e.g. priority information, and/or
-SL CSI-RS transmission indicator or information about the number of SL CSI-RS antenna ports (to be transmitted)
-transmitting location information of the UE or location (or distance zone) information of the target receiving UE (requested for SL HARQ feedback), and/or
Reference signals (e.g., DMRS, etc.) related to channel estimation and/or decoding of data to be transmitted through the PSSCH, e.g., information related to the pattern of (time-frequency) mapping resources of the DMRS, rank information, antenna port index information.
For example, the first SCI may include information related to channel interception. For example, the receiving UE may decode the second SCI by using PSSCH DMRS. The polarization code used in the PDCCH may be applied to the second SCI. For example, in the resource pool, the payload size of the first SCI may be equal for unicast, multicast and broadcast. After decoding the first SCI, the receiving UE does not have to perform blind decoding on the second SCI. For example, the first SCI may include scheduling information for the second SCI.
Further, in various embodiments of the present disclosure, since the transmitting UE may transmit at least one of the SCI, the first SCI, and/or the second SCI to the receiving UE over the PSCCH, the PSCCH may be replaced by at least one of the SCI, the first SCI, and/or the second SCI. Additionally/alternatively, for example, the SCI may be replaced by at least one of the PSCCH, the first SCI, or the second SCI. Additionally/alternatively, the PSSCH may be replaced by the second SCI, e.g., because the transmitting UE may transmit the second SCI to the receiving UE via the PSSCH.
In the present disclosure, the term "configured/configured or defined/defined" may be interpreted as (pre) configured from a base station or a network (via predefined signaling (e.g., SIB, MAC signaling, RRC signaling)). For example, "a may be configured" may include "base station or network (pre) configuring/defining or informing a to UE". Alternatively, the term "configured/configured or defined/defined" may be interpreted as preconfigured or predefined in the system. For example, "a may be configured" may include "a is preconfigured/defined in the system".
In the present disclosure, for example, resource Blocks (RBs) may be replaced/replaced with subcarriers. Further, for example, in the present disclosure, packets or traffic may be replaced/replaced with Transport Blocks (TBs) or medium access control Protocol Data Units (PDUs) according to the transmission layer.
In the present disclosure, for example, the source ID may be replaced/substituted with the destination ID.
In the present disclosure, for example, the L1 ID may be replaced/substituted with the L2 ID. For example, the L1 ID may be an L1 source ID or an L1 destination ID. For example, the L2 ID may be an L2 source ID or an L2 destination ID.
Meanwhile, the base station may allocate resources (hereinafter, SL resources) for transmitting and receiving SL channels/signals to the UE. For example, the base station may transmit information related to the resources to the UE. In the present disclosure, a method in which a base station allocates SL resources to a UE may be referred to as a mode 1 method, a mode 1 operation, or a resource allocation mode 1.
On the other hand, the UE may select SL resources within the resource pool based on the sensing. In the present disclosure, a method for selecting SL resources by a UE may be referred to as a mode 2 method, a mode 2 operation, or a resource allocation mode 2. For example, in resource allocation mode 2, the UE may detect SCI transmitted by other UEs, and the UE may identify resources reserved by other UEs based on SCI, and the UE may obtain RSRP measurements. Further, based on the above sensing result, the UE may exclude a specific resource within the resource selection window to select a resource for SL transmission. In case of a sensing operation, the UE may refer to resource allocation information received through the first SCI. However, due to the overhead of the first SCI, the amount of information that can be obtained by the UE in the first SCI may be limited.
Based on various embodiments of the present disclosure, to assist the sensing operation and/or the resource selection operation of the first UE, the second UE may transmit additional assistance information. The first UE may use the assistance information received from the second UE in order to improve PSSCH detection performance and/or reduce half-duplex limitations and/or select spare resources for transmission and reception of the particular signal. In embodiments of the present disclosure, for ease of description, it is assumed that UE-A transmits assistance information to UE-B. Suppose that UE-B selects resources for PSCCH/PSSCH to be transmitted to UE-a and/or resources for PSCCH/PSSCH to be transmitted to UE-C (i.e., a third UE) based on the assistance information received from UE-a.
Fig. 11 illustrates a process for UE-a to transmit assistance information to UE-B in accordance with an embodiment of the present disclosure. The embodiment of fig. 11 may be combined with various embodiments of the present disclosure.
Referring to fig. 11, in step S1100, UE-a may transmit assistance information to UE-B. For example, the UE-B may select resources for PSCCH/PSSCH to be transmitted to the UE-A based on the assistance information received from the UE-A, and the UE-B may perform SL transmission by using the resources. For example, the UE-B may select resources for PSCCH/PSSCH to be transmitted to the UE-C based on the assistance information received from the UE-A, and the UE-B may perform SL transmission by using the resources.
Information about reserved resources to be notified to UE-B by UE-a may be extended, based on embodiments of the present disclosure. For example, the auxiliary information may include information related to additional resources in addition to information related to resources included in the SCI. For example, the information related to the resources included in the auxiliary information may be information related to the extended reserved resources. Specifically, for example, in addition to the information related to reserved resources (e.g., up to three resources) transmitted through SCI, UE-a may transmit information related to other reserved resources (e.g., information related to frequency domain resources and/or information related to time domain resources) to UE-B through the assistance information. In this case, for the reserved resources additionally indicated, the UE-B may determine whether to exclude resources corresponding to reserved resources within the resource selection window. For example, reserved resources may be indicated in the form of multiple groups. For example, each of the plurality of reserved resource groups may be indicated by the first SCI and/or by the second SCI and/or by the PSSCH (data within). For example, a priority value may be additionally configured/indicated for each reserved resource group. For example, RSRP measurements may be additionally configured/indicated for each reserved resource group. For example, an RSRP threshold (for a combination of priorities) may be additionally configured/indicated for each reserved resource group. For example, a specific level value may be additionally configured/indicated for each reserved resource group. For example, when (re) selecting resources, the UE-B may process the indicated reserved resources differently for each specific level value. For example, for a reserved resource group with a particular level, even if the RSRP measurement is greater than (equal to or greater than) the RSRP threshold, (perhaps) the UE-B may not exclude the reserved resource group with the particular level from the set of resources that may be selected for transmission. For example, the extended reserved resources may be used for the same TB. For example, the extended reserved resources may be used for multiple TBs. For example, if the extended reserved resources are for multiple TBs, the indication unit of the extended reserved resources may be each TB unit. For example, the UE-a may select the extended reserved resources through a resource (re) selection procedure based on at least one of the number of retransmissions, whether it is a retransmission, a packet size, priority information, and/or TB-related information from a higher layer (e.g., MAC layer). Here, the UE-a may perform a sensing operation, and when the UE-a performs a resource (re) selection procedure or (re) selects resources for each resource group, the size of the corresponding window and/or the number of resources may be extended. For example, the size of the window may be configured or preconfigured for the UE. For example, whether the size of the window is extended may be configured or preconfigured for the UE. For example, the (maximum) number of resources may be configured or pre-configured for the UE. For example, whether the (maximum) number of resources that can be configured or pre-configured for the UE is extended.
Based on embodiments of the present disclosure, UE-a may send to UE-B information related to time domain resources over which UE-a cannot perform SL reception and/or information related to time domain resources over which UE-a can perform SL reception. For example, UE-a may send to UE-B information related to frequency domain resources over which UE-a cannot perform SL reception and/or information related to frequency domain resources over which UE-a may perform SL reception. For example, the assistance information may include information about time domain resources through which UE-a cannot perform SL reception and/or information about time domain resources through which UE-a can perform SL reception. For example, the assistance information may include information related to frequency domain resources through which UE-a cannot perform SL reception and/or information related to frequency domain resources through which UE-a can perform SL reception. For example, UE-a may send information related to time domain resources and/or information related to frequency domain resources where UE-a may have low reception performance to UE-B. For example, UE-a may send information related to time domain resources and/or information related to frequency domain resources where UE-a may have high reception performance to UE-B. For example, low reception performance may refer to a target error probability being greater than or equal to a particular threshold. For example, high reception performance may refer to a target error probability being less than or equal to a particular threshold. For example, low reception performance may refer to the target SINR and/or the target SNR being less than or equal to a particular threshold. For example, high reception performance may refer to a target SINR and/or a target SNR greater than or equal to a particular threshold. For example, low reception performance may refer to the target interference level being greater than or equal to a particular threshold. For example, high reception performance may refer to a target interference level being less than or equal to a particular threshold. That is, if UE-a wants to receive PSCCH/PSCCH from UE-B, UE-a may send information related to preferred resources and/or information related to non-preferred resources to UE-B. In this case, the UE-B may transmit the PSCCH/PSCCH to the UE group including at least the UE-a by using resources other than the non-preferred resources. For example, the UE-B may send PSCCH/PSSCH to the UE group including at least UE-A by preferentially using the preferred resources. For example, the UE-a may determine/configure a reception impossible domain and/or a reception possible domain based on the SL transmission scheduled time and/or the UL transmission scheduled time and/or the DL reception scheduled time. For example, UL transmission and/or DL reception may be limited to transmission/reception that satisfies a particular condition (e.g., URLLC (e.g., corresponding to priority index 1)). For example, UL transmission and/or DL reception may be limited to transmission/reception corresponding to system information and/or paging and/or random access (e.g., PRACH and/or MsgA3 and/or random access response and/or MsgB). For example, the UE-a may determine/configure the corresponding resources by a sensing operation based on whether the RSRP measurement for each resource (e.g., slot, subchannel, group of slots, and/or group of subchannels) is above a particular threshold. For example, the specific threshold may be (pre) configured, predefined or selected by the UE implementation. For example, the UE-a may determine/configure the corresponding resources based on SINR estimates and/or RSSI measurements for each resource (e.g., slot, subchannel, group of slots, and/or group of subchannels).
Based on embodiments of the present disclosure, UE-a may send all or part of the information about the sensing operation performed by UE-a to UE-B. For example, the assistance information may include information obtained by the UE-a based on the sensing operation. For example, the information about the sensing operation may include at least one of: information related to RSRP measurements, priority information, and/or information related to reserved resources indicated by the first SCI and/or the second SCI and/or the PSSCH detected by the UE-a. For example, the information about the sensing operation may include information about a resource selection window of the UE-a, and/or information about (all or part of) resources excluded from the resource selection target based on sensing within the resource selection window. In this context, in resource selection, UE-B may consider resources indicated by SCIs detected by UE-A but not detected by UE-B. For example, when the UE-B performs resource (re) selection, the UE-B may not (re) select resources indicated by SCIs detected by UE-A but not detected by UE-B based on the information described above. That is, according to the above method, interference from UEs that are not recognized by the UE-B due to the hidden node problem can be minimized.
Based on embodiments of the present disclosure, UE-a may configure or suggest to UE-B conditions under which all or part of the resources may be used. For example, the UE-A may configure or suggest to the UE-B a condition that all or part of the resources cannot be used. For example, the assistance information may include a condition that the UE-B may use all or part of the resources and/or a condition that the UE-B may not use all or part of the resources. For example, the condition may include a particular priority. For example, the condition may include a type of service. For example, the conditions may include QoS parameters. For example, the conditions may include a broadcast type. For example, the condition may include whether SL HARQ feedback is enabled. For example, the conditions may include SL HARQ feedback options. For example, the condition may include a range of RSRP measurements.
For example, the UE-a may send information related to a particular time interval and/or information related to time-frequency resources to the UE-B. Further, for example, the UE-A may send to the UE-B a condition that resources may be used.
For example, if the priority value is less than or equal to (less than) a certain threshold (configured and/or configured by PC5-RRC (pre-empt)), then the UE-B may use the resources. For example, otherwise, the UE-B may suspend the use of resources or cancel the already allocated transmission.
For example, if the priority value is greater than or equal to (greater than) a certain threshold (configured and/or configured (in advance) by the PC 5-RRC), the UE-B may use the resources. For example, otherwise, the UE-B may suspend the use of resources or cancel the already allocated transmission.
For example, if the total or remaining Packet Delay Budget (PDB) value is less than or equal to (less than) a certain threshold (configured and/or configured (in advance) by the PC 5-RRC), then the UE-B may use the resources. For example, otherwise, the UE-B may suspend the use of resources or cancel the already allocated transmission.
For example, if the total or remaining Packet Delay Budget (PDB) value is greater than or equal to (greater than) a certain threshold (configured and/or configured (in advance) by the PC 5-RRC), then the UE-B may use the resources. For example, otherwise, the UE-B may suspend the use of resources or cancel the already allocated transmission.
For example, if the RSRP measurement corresponding to the resource (e.g., a value measured based on DMRS and/or CSI-RS on the PSCCH and/or PSSCH used to indicate the resource) is less than or equal to (less than) the third threshold, the UE-B may suspend use of the resource or cancel the already allocated transmission. For example, otherwise, the UE-B may use the resources. For example, a third threshold may be configured or pre-configured for the UE for each resource pool. For example, the third threshold may be configured or pre-configured for each priority for the UE. For example, a third threshold may be configured or pre-configured for the UE for each QoS parameter. For example, the third threshold may be configured or pre-configured for the UE for each congestion control level. For example, a third threshold may be configured or pre-configured for the UE for each resource pool. By the above method, for example, resources determined to have a good channel environment can be reserved for emergency communication.
For example, the unit of configuration resources may be a single subchannel. For example, the unit of configuration resources may be a plurality of subchannels. For example, a unit for configuring/indicating resources corresponding to a transmission deferral target or a transmission priority target may be configured or preconfigured for the UE for each resource pool. For example, a unit for configuring/indicating a resource corresponding to a transmission deferral target or a transmission priority target may be configured or preconfigured for the UE for each priority. For example, a unit for configuring/indicating resources corresponding to the occurrence of the deferral target or the transmission priority target may be configured or preconfigured for the UE for each QoS parameter. For example, a unit for configuring/indicating resources corresponding to a transmission deferral target or a transmission priority target may be configured or preconfigured for the UE for each congestion level. By the method, the number of continuous resources on the frequency domain can be adjusted according to the size of the urgent message. For example, a large number of sub-channels may be allocated to an urgent message having a large size. For example, the UE-a may receive an emergency message or an emergency situation and/or related information (e.g., size of the emergency message, traffic characteristics, duration, qoS parameters, and/or priority, etc.) from a higher layer (e.g., application layer and/or V2X layer and/or AS layer), and the UE-a may determine/configure available conditions and/or unavailable conditions for a particular resource based on the information.
Based on embodiments of the present disclosure, UE-a may send information to UE-B related to canceling all or part of the resources previously reserved by UE-a. For example, the assistance information may include information related to canceling resources previously reserved by the UE-a. For example, the UE-a may again indicate the resource corresponding to reservation cancellation to the UE-B through the first SCI and/or the second SCI and/or the PSSCH by using a form (resource allocation method) of a Time Resource Indicator Value (TRIV) and/or a Frequency Resource Indicator Value (FRIV). For example, the UE-A may send a reservation cancellation indicator to the UE-B via the first SCI and/or the second SCI and/or the PSSCH. In this case, for the resource reservation information received over the PSCCH and/or PSSCH previously transmitted by the UE-a, the UE-B may cancel the reservation of the resource upon receiving the reservation cancellation information or after a specific time (a predefined or (pre) configured value) from the corresponding time. Upon reservation cancellation, the UE-B may trigger a resource reselection. For example, the UE-a may send/report information to the base station indicating the release of all or part of the resources allocated by the base station. For example, the UE-a may send/report information to the base station indicating that all or part of the resources allocated by the base station are not used. For example, the report may be sent over PUCCH and/or PUSCH. For example, UE-C (i.e., a third UE) may send information to UE-B indicating that UE-A releases all or part of the reserved resources. For example, if UE-a transmits a first TB over all or part of the reserved resources and UE-a determines that the target UE successfully received the first TB (i.e., ACK), UE-a may determine/configure to release later reserved resources for the first TB. For example, if UE-a receives an ACK in unicast or multicast HARQ feedback option 2, or if UE-a does not receive a PSFCH indicating a NACK in multicast HARQ feedback option 1, UE-a may determine/configure to release later reserved resources for the same TB. For example, if UE-a performs (re) transmission for the same TB by exceeding the number of (re) transmissions on all or part of the reserved resources, UE-a may determine/configure to release later reserved resources for the same TB. For example, if there is no remaining Packet Delay Budget (PDB) for the same TB for all or part of the reserved resources, then UE-a may determine/configure to release later reserved resources for the same TB. For example, if the remaining PDB for the same TB for all or part of the reserved resources is below (e.g., less than or equal to) a certain threshold (configured or predefined or configured (in advance) by the PC 5-RRC), the UE-a may determine/configure to release later reserved resources for the same TB.
The additional resource information described in various embodiments of the present disclosure may be in the form of an indication/representation of frequency domain resources and/or time domain resources. For example, the resource information may be in the form of one or more combinations of TRIV and/or FRIV and/or resource reservation periods and/or priorities and/or usage levels. Each combination may be transmitted through the first SCI and/or the second SCI and/or the PSSCH. For example, each resource group indicator combination may be included in a different channel and/or signal and/or information. For example, the number of resource group indicator combinations may be configured or pre-configured for each resource pool for the UE. For example, the number of resource group indicator combinations may be configured or pre-configured for each first SCI indication value for the UE. For example, the number of resource group indicator combinations may be configured or preconfigured for the UE for each second SCI format. For example, whether a next resource group indicator combination exists may be indicated by a previous resource group indicator combination.
For example, TRIV may indicate/represent i) the time at which UE-B receives SCI and/or ii) one or two slot offset values from that time. In this context, TRIV may indicate/represent up to three time domain resources. For example, the TRIV may indicate/represent i) a time of a time-latest resource from among time-domain resources derived from the TRIV indicated by the first SCI, and/or ii) one or two slot offset values from that time. For example, the TRIV may indicate/represent i) a time of a resource that is the latest in time among the time domain resources indicated by the previous resource group indicator, and/or ii) one or two slot offset values from that time. For example, various forms of TRIVs and reference points may be used in combination. For example, the case where the SCI reception time is a reference point may be the case where the TRIV is transmitted through the first SCI and/or the case where the TRIV is transmitted through the second SCI. For example, the case where the last PSSCH resource time indicated by the first SCI or the last PSSCH resource time indicated by the previous group indicator is the reference point may be the case where TRIV is transmitted through the second SCI and/or the case where TRIV is transmitted through the PSSCH. For example, the maximum number of slot offsets (e.g., 1 or 2) that can be indicated/represented by the TRIV for each resource group indicator can be the same as the TRIV configuration of the first SCI. For example, the maximum number of slot offsets that can be indicated/represented by TRIV for each resource group indicator may be configured or preconfigured for the UE for each resource group indicator. For example, the maximum number of slot offsets that can be indicated/represented by TRIV for each resource group indicator may be configured or preconfigured for the UE for each second SCI format. For example, the maximum number of slot offsets that can be indicated/represented by TRIV for each resource group indicator may be configured or pre-configured for the UE for each resource pool. For example, information about the maximum number of slot offsets that can be indicated/represented by the TRIV for each resource group indicator may be sent through the first SCI. For example, information about the maximum number of slot offsets that can be indicated/represented by the TRIV for each resource group indicator may be sent through the second SCI. For example, information related to the maximum number of slot offsets that can be indicated/represented by the TRIV for each resource group indicator may be transmitted through the PSSCH. For example, the maximum number of slot offsets may be 1 or 2. For example, the length of the time interval or the number of time slots that can be indicated/represented by TRIV for each resource group indicator may be configured or preconfigured for the UE for each resource group indicator. For example, the length of the time interval or the number of time slots that can be indicated/represented by the TRIV for each resource group indicator may be configured or preconfigured for the UE for each second SCI format. For example, the length of the time interval or the number of time slots that can be indicated/represented by TRIV for each resource group indicator may be configured or preconfigured for the UE for each resource pool.
For example, the FRIV may indicate/represent the number of sub-channels allocated for a single PSSCH resource or multiple PSSCH resources, and/or a starting sub-channel index for the time of the PSSCH resource indicated/represented by the TRIV other than the time of the UE-B receiving the SCI. For example, the FRIV may indicate/represent the number of sub-channels allocated for a single PSSCH resource or multiple PSSCH resources, and/or a starting sub-channel index of one PSSCH resource or two PSSCH resources indicated/represented by the TRIV. For example, one or both PSSCH resources can be resources subsequent to the last PSSCH resource indicated/denoted by the first SCI. For example, one or both PSSCH resources can be resources subsequent to the last PSSCH resource indicated/denoted by the previous resource group indicator. For example, various forms of FRIV and reference points may be used in combination.
For example, the number of allocated subchannels that may be indicated/represented by the FRIV for each resource group indicator may be the same. In this case, the FRIV of the resource group indicator transmitted except the first SCI may not include information related to the number of allocated subchannels. That is, information related to the number of allocated subchannels may be excluded/omitted from the FRIV of the resource group indicator transmitted except for the first SCI.
For example, the number of assigned subchannels that may be indicated/represented by the FRIV for each resource group indicator may be different. The above-described approach may be particularly useful when the corresponding TB is different for each resource group. For example, the maximum number of PSSCH resources that can be indicated/represented by the FRIV for each resource group indicator can be the same as the FRIV configuration of the first SCI. For example, the maximum number of PSSCH resources that can be indicated/represented by the FRIV for each resource group indicator may be configured or preconfigured for the UE for each resource group indicator. For example, the maximum number of PSSCH resources that can be indicated/represented by the FRIV for each resource group indicator may be configured or preconfigured for the UE for each second SCI format. For example, the maximum number of PSSCH resources that can be indicated/represented by the FRIV for each resource group indicator may be configured or preconfigured for the UE for each resource pool. For example, information about the maximum number of PSSCH resources that can be indicated/represented by the FRIV for each resource group indicator may be transmitted through the first SCI. For example, information related to the maximum number of PSSCH resources that can be indicated/represented by the FRIV for each resource group indicator may be transmitted through the second SCI. For example, information related to the maximum number of PSSCH resources that can be indicated/represented by the FRIV for each resource group indicator may be transmitted through the PSSCH.
For example, the priority value may be the same for each resource group indicator. In this case, the combination of the resource group indicators transmitted except the first SCI may not include priority information. That is, priority information may be excluded/omitted from the combination of resource group indicators transmitted other than the first SCI.
For example, the priority value that may be indicated/represented for each resource group indicator may be different. For example, for reserved resource groups indicated/represented by the received resource group indicator, the UE-B may apply differently whether to exclude resources from RSRP measurement values when (re) selecting resources by using a threshold corresponding to the priority for each group. For example, RSRP may be measured based on DMRS and/or CSI-RS used to indicate PSCCH and/or PSSCH of the corresponding information. For example, the threshold may be configured differently for each resource group and/or for each usage level. For example, even for the same transmission/reception priority combination, the threshold value may be different depending on the resource group. Specifically, for example, the threshold may be determined based on a combination of: i) A priority value indicated by the SCI received by the UE, and i) a priority value of data to be transmitted by the UE. Herein, for example, the threshold may be different for each resource group indicator. For example, the threshold value of the resource group indicated by the first SCI may be different from the threshold value of the resource group indicated by the resource group indicator.
For example, the usage level value may be the same for each resource group indicator. In this case, the combination of resource group indicators may not include usage level information. That is, the usage level information may be excluded/omitted from the combination of resource group indicators.
For example, the usage level value that may be indicated/represented for each resource group indicator may be different. For example, for a reserved resource group indicated by the received resource group indicator, the UE-B may determine a resource exclusion based on the RSRP measurement and a particular threshold. The UE-B may then (eventually) exclude resources from the (re) selected available resources according to the usage level. Alternatively, the UE-B may (eventually) include the resources in the available resources (re-) selected by the resources according to the usage level. For example, RSRP may be measured based on DMRS and/or CSI-RS for the PSCCH and/or PSSCH indicating the corresponding information. For example, whether resources can be included in the available resources may be configured or pre-configured for the UE for each usage level. For example, the UE may randomly and probabilistically determine, for each usage level, whether resources may be included in the available resources. For example, if the reserved resource group includes N resources, the UE may randomly determine whether to include resources in the available resources for each usage level until a certain ratio (e.g., M/N) or a certain amount (e.g., M). Herein, N may be a number greater than M. For example, a specific ratio or a specific amount may be predefined for the UE. For example, a specific ratio or a specific amount may be configured or preconfigured for the UE. For example, even if the RSRP value of the resource exceeds a threshold, the UE-B may not probabilistically perform resource exclusion. For example, if the RSRP value of the resource exceeds a threshold, the UE-B may probabilistically perform resource exclusion. If the UE-B randomly, probabilistically determines resource exclusions, a probability value may be configured or pre-configured for each usage level for the UE. For example, whether resources are included in or excluded from the available resources may be configured or pre-configured for each usage level for the UE. For example, whether resources are included in or excluded from the selected resources for PSCCH/PSSCH transmission may be configured or preconfigured for the UE for each usage level.
For example, the UE may need to perform resource exclusion for a particular resource group according to the level. For example, for a particular resource group having another level, the UE may include the corresponding resource group in the preferred resources. For example, an RSRP threshold for a resource may be (pre) configured for each usage level. The UE-B may determine whether to use/consider the received information for each level.
For example, for a resource group having a first level, UE-B may be indicated/configured to exclude the corresponding resource. For example, the UE-B may exclude the resource group configured to the first level. For example, to avoid half duplex limitations, UE-a may configure a set of resources where SL reception is not possible as a first level and provide it to UE-B. For example, in order to avoid the problem of overlapping on the same slot by transmission and reception of UE-a, UE-a may configure a resource set in which SL reception is impossible as a first level, and UE-a may transmit information related to the resource set configured as the first level to UE-B.
For example, for a resource group with a second level, the UE-B may be instructed/configured to preferentially use the corresponding resources when transmitting the PSCCH/PSCCH. For example, the UE-B may transmit the PSCCH/PSSCH by preferentially using the set of resources configured to the second level. For example, UE-a may configure the set of resources preferred for SL reception (for reasons such as low interference) to a second level and provide it to UE-B. For example, UE-a may configure the set of resources preferred for SL reception to a second level, and UE-a may send information to UE-B related to the set of resources configured to the second level.
For example, in the event that the UE-B cannot use resources having the second level (e.g., if the amount of final available resources compared to the information to be transmitted is less than or equal to a particular threshold), the UE-B may not use the resource information for the second level. On the other hand, the UE-B may select/determine the selected resources and/or available resources by referring to the resources for the second level.
For example, the information about the level may include information about the purpose of the resource (e.g., for solving a hidden node problem, for solving a half duplex limitation, and/or for informing of a preferred resource) or information related to the operation of the UE-B corresponding thereto. For example, information about the level may be indicated/represented by the first SCI (e.g., indicated/represented by the reserved field). For example, the information about the level may be transmitted in the form of a sub-header together with the resource group information through the second SCI and/or PSSCH and/or MAC message and/or PC5-RRC signaling.
Meanwhile, the ratio of resources that can be selected by the UE-B for transmission in the resource (re) selection procedure should be equal to or greater than a (pre) configured threshold value, as compared to the total amount of resources. If the ratio of available resources is less than the threshold, the UE-B may again include all or part of reserved resources among the reserved resources other than the reserved resources indicated/represented by the first SCI in the available resources. For example, the threshold value may be the same value as the first threshold value used in excluding resources indicated/represented by the conventional first SCI from available resources based on RSRP. For example, the threshold may be a second threshold that is different from the first threshold used in excluding resources indicated/represented by the conventional first SCI from available resources based on RSRP. In this case, for example, the first threshold value and/or the second threshold value may be configured or preconfigured for the UE. For example, the first threshold and/or the second threshold may be predefined for the UE. In this context, for example, the UE-B may preferentially include reserved resources later in time among the available resources. For example, the UE-B may preferentially include reserved resources earlier in time in the available resources. For example, the UE-B may preferentially include reserved resources corresponding to those having a lower priority among the available resources. That is, the UE-B may preferentially include reserved resources corresponding to those having a higher priority value among the available resources.
For example, if the ratio of available resources is less than the threshold, the UE-B may again include all or part of the reserved resources in the available resources except the reserved resources indicated/represented by the first SCI. For example, the UE-B may perform an increase (e.g., increase 3 dB) for RSRP measurements without a procedure to switch reserved resources back to available resources. For example, if the UE-B performs an increase for RSRP measurement values, the UE-B may include all reserved resources except the reserved resources indicated/represented by the first SCI in the available resources. For example, if the UE-B performs an increase for RSRP measurement values, reserved resources may be excluded from the available resources until the number of available resources selected based on the increased RSRP measurement values for reserved resources other than the reserved resources indicated/represented by the first SCI exceeds a (pre) configured threshold. For example, if the UE-B calculates a ratio of the number of available resources to the total number of resources, the number of available resources may be determined based only on reserved resources indicated/represented by the first SCI. For example, if the UE-B calculates a ratio of the number of available resources to the total number of resources, the UE-B may determine whether to exclude reserved resources indicated/represented by the first SCI from the available resources based on the sensing operation. That is, the number of available resources corresponding to the condition for triggering the (re-) selection of resources may be different from the actual number of available resources. For example, the threshold value may be the same value as the first threshold value used in excluding resources indicated/represented by the conventional first SCI from available resources based on RSRP. For example, the threshold may be a second threshold that is different from the first threshold used in excluding resources indicated/represented by the conventional first SCI from available resources based on RSRP. In this case, for example, the first threshold value and/or the second threshold value may be configured or preconfigured for the UE. For example, the first threshold and/or the second threshold may be predefined for the UE.
For example, the additional resource information may indicate/represent time domain resources and/or time intervals. For example, UE-a may indicate/represent all or part of the SL slots within a particular time interval by using a bitmap. For example, each bit of the bitmap may correspond to a time slot in a transmit resource pool and/or a receive resource pool. For example, each bit of the bitmap may correspond to a group of time slots in a transmit resource pool and/or a receive resource pool. For example, the number of slots included in the slot group may be configured or preconfigured for the UE for each resource pool. For example, the number of slots included in the slot group may be configured for the UE through PC5-RRC signaling. For example, the length of the bitmap may be configured or pre-configured for each resource pool for the UE. For example, the length of the bitmap may be configured for the UE through PC5-RRC signaling. For example, the bitmap may be repeatedly applied to SL slots in the resource pool. For example, the bitmap may be applied to SL slots in the resource pool once. For example, the bitmap may be repeatedly applied to SL slots in the resource pool for a (pre-) configured number of times. For example, the bitmap may be repeatedly applied to SL slots in the resource pool for as many times as indicated by the first SCI. For example, the bitmap may be repeatedly applied to SL slots in the resource pool for a number of times as indicated by the second SCI. For example, the bitmap may be repeatedly applied to SL slots in the resource pool for as many times as indicated by the PSSCH. For example, a second bitmap indicating/representing the time interval to which the bitmap is applied may also be used. For example, UE-a may indicate/represent a portion of the time interval by using the second bitmap, and UE-a may indicate/represent SL slot information within the time interval indicated/represented by the second bitmap by using the first bitmap. For example, the length of the second bitmap may be configured or pre-configured for the UE for each resource pool. For example, the length of the second bitmap may be configured for the UE through PC5-RRC signaling. For example, the time domain resource may have a form in which the second period is repeated in units of the first period value and the slot or the group of slots is repeated in units of the second period value within the second period. For example, a first offset (e.g., slot offset or absolute time offset) of the position of the second period within the first period may be applied. For example, a second offset (e.g., a slot offset or an absolute time offset) indicating/representing a starting position of a slot or group of slots within the second period may be applied.
For example, the first period value may be configured or pre-configured for the UE for each resource pool. For example, the second period value may be configured or pre-configured for the UE for each resource pool. For example, the first offset may be configured or pre-configured for the UE for each resource pool. For example, the second offset may be configured or pre-configured for the UE for each resource pool. For example, the first period value may be configured or pre-configured for each second SCI format for the UE. For example, the second period value may be configured or pre-configured for the UE for each second SCI format. For example, the first offset may be configured or pre-configured for the UE for each second SCI format. For example, the second offset may be configured or pre-configured for the UE for each second SCI format. For example, the first period value may be configured or preconfigured for each second SCI indication value for the UE. For example, the second period value may be configured or preconfigured for each second SCI indication value for the UE. For example, the first offset may be configured or preconfigured for each second SCI indication value for the UE. For example, the second offset may be configured or preconfigured for each second SCI indication value for the UE.
For example, all types and/or characteristics of available or unavailable data for each resource group indicator may be the same. In this case, information related to the type and/or characteristics of available or unavailable data may be indicated/represented only once for a plurality of resource groups.
For example, the type and/or nature of the available or unavailable data for each resource group indicator may be different. For example, information related to the type and/or nature of available or unavailable data may include a recommended priority value. For example, information related to the type and/or nature of available or unavailable data may include a threshold value of a priority value. For example, information related to the type and/or nature of available or unavailable data may include recommended QoS parameters. For example, information related to the type and/or nature of available or unavailable data may include recommended service types. For example, the information related to the type and/or nature of the available or unavailable data may include a recommended transmission type (e.g., a transmission type and/or HARQ feedback/options and/or rank and/or MCS table and/or MCS index range and/or whether CSI reporting is supported). For example, information related to the type and/or nature of available or unavailable data may include a threshold for remaining PDBs. For example, the UE-B may use the indicated priority value for the indicated resource. For example, the UE-B may perform PSSCH transmission having a priority equal to or less than a priority threshold by using the indicated resources. For example, the UE-B may not perform PSSCH transmission other than the recommended transmission type and/or characteristics by using the indicated resources.
For example, the UE-A may send additional resource information via the second SCI. For example, the UE-a may transmit additional resource information through the PSSCH (e.g., a higher layer message (e.g., a MAC layer message and/or an AS layer message and/or a V2X layer message)).
Meanwhile, if the UE-B performs resource (re) selection by using information related to the additional reserved resources, SL transmission may be canceled or SL transmission power may be reduced due to collision between UL and SL, and thus, benefits according to the use of the additional reserved resources may be reduced. Thus, for example, if UE-B transmits PSCCH/PSSCH and/or PSFCH on the resources indicated/represented by UE-a, the thresholds for UL-SL prioritization may be configured or preconfigured for the UE alone. For example, if UE-B transmits PSCCH/PSSCH and/or PSFCH on the resources indicated/represented by UE-a, the priority of SL transmission may be configured to be high in UL-SL prioritization. For example, if the UE-B performs resource (re) selection based on the resources indicated/represented by the UE-a and the UE-B performs PSSCH transmission by using the (re) selected resources, a threshold for UL-SL prioritization may be configured separately or pre-configured for the UE. For example, if UE-B performs resource (re) selection based on the resources indicated/represented by UE-a, and UE-B performs PSSCH transmission by using the (re) selected resources, the priority of SL transmission may be configured to be high in UL-SL prioritization.
For example, the UE-B may determine whether to use the additional information (e.g., auxiliary information) described in various embodiments of the present disclosure based on a geographic distance from the UE-a providing the additional information. For example, the UE-B may or may not use additional information depending on the geographic distance from the UE-A that provided the additional information. For example, UE-A may send additional information to UE-B as described in various embodiments of the disclosure, and UE-A may additionally send geographic location information (e.g., area ID) of UE-A to UE-B. For example, the geographic location information of the UE-a may be included in the additional information. For example, the UE-B may obtain the distance between the UE-B and the UE-A based on the location information of the UE-B itself (i.e., the location information of the UE-B) and the geographic location information of the UE-A. Herein, for example, if the distance is less than or equal to (less than) a certain threshold, the UE-B may use the additional information received from the UE-a. For example, if the distance is greater than (greater than or equal to) a particular threshold, then UE-B may not use the additional information received from UE-a. For example, a threshold may be predefined for the UE. For example, the threshold may be configured or preconfigured for the UE. For example, the UE may determine the threshold randomly.
For example, the UE-B may determine whether to use additional information (e.g., auxiliary information) described in various embodiments of the present disclosure based on the received power or the quality of a signal or channel including the additional information. For example, the UE-B may or may not use additional information depending on the received power or the quality of the signal or channel including the additional information. For example, the UE-B may measure the RSRP value for a signal or channel that includes additional information provided by the UE-a. Herein, for example, if the RSRP value is greater than or equal to (greater than) a certain threshold, the UE-B may use the additional information received from the UE-a. For example, if the RSRP value is less than (less than or equal to) a particular threshold, the UE-B may not use the additional information received from the UE-a. For example, a threshold may be predefined for the UE. For example, the threshold may be configured or preconfigured for the UE. For example, the UE may determine the threshold randomly.
For example, the UE-B may determine whether to use the additional information (e.g., the assistance information) described in various embodiments of the present disclosure based on priorities associated with signals or channels that include the additional information. For example, the UE-B may or may not use additional information depending on the priority of the signal or channel including the additional information. For example, if the priority value corresponding to the additional information is less than or equal to (less than) a certain threshold value, the UE-B may use the additional information received from the UE-a. For example, a low priority value may refer to a high priority. For example, if the priority value corresponding to the additional information is less than or equal to (less than) the priority value corresponding to the data transmission of the UE-B, the UE-B may use the additional information received from the UE-a. For example, a threshold may be predefined for the UE. For example, the threshold may be configured or preconfigured for the UE. For example, the UE may determine the threshold randomly. For example, the priority of the signal or channel including the additional information may be the maximum value among priority values available to the UE-a transmitting the additional information. For example, the priority of the signal or channel including the additional information may be the smallest of the priority values available to the UE-a transmitting the additional information. For example, the priority of a signal or channel including additional information may be the maximum among priority values of resources available for transmitting the additional information therethrough. For example, the priority of a signal or channel including additional information may be the smallest among priority values of resources available for transmitting the additional information therethrough. For example, the priority of a signal or channel including additional information may be a maximum priority value of MAC PDUs transmitted together with the additional information. For example, the priority of a signal or channel including additional information may be a minimum priority value of MAC PDUs transmitted together with the additional information. For example, the priority of the signal or channel including the additional information may be configured or preconfigured for the UE for each resource pool. For example, the priority of the signal or channel including additional information may be configured or pre-configured for the UE for each resource pool congestion level. For example, the priority of the signal or channel including the additional information may be configured or preconfigured for the UE for each service type. For example, the priority of the signal or channel including the additional information may be configured or preconfigured for the UE for each UE speed. For example, the priority of a signal or channel including additional information may be configured or preconfigured for the UE for each QoS parameter. For example, an L1 source ID and/or an L2 source ID for a signal or channel including additional information may be configured or preconfigured for the UE for each resource pool. For example, an L1 destination ID and/or an L2 destination ID for a signal or channel including additional information may be configured or preconfigured for the UE for each resource pool. For example, the UE may be configured or preconfigured with a broadcast type for signals or channels that include additional information for each resource pool. For example, the HARQ feedback may be provided for the UE for each resource pool configuration or whether it is preconfigured for a signal or channel including additional information. For example, the HARQ feedback option for a signal or channel including additional information may be configured or pre-configured for the UE for each resource pool.
Fig. 12 illustrates a process for a UE to perform SL communication based on assistance information, according to an embodiment of the present disclosure. The embodiment of fig. 12 may be combined with various embodiments of the present disclosure.
Referring to fig. 12, in step S1210, UE-B may receive SCI from UE-a over PSCCH. For example, the SCI may include information for scheduling the PSSCH. In step S1220, the UE-B may receive the assistance information from the UE-A through the PSSCH. For example, the auxiliary information may be included in the MAC PDU. For example, the auxiliary information may include information set forth in various embodiments of the present disclosure. In step S1230, the UE-B may select SL resources based on the assistance information.
In step S1240, the UE-B may send PSCCH and/or PSSCH to the UE-C based on the selected SL resources. Alternatively/additionally, in step S1250, the UE-B may send PSCCH and/or PSSCH to the UE-A based on the selected SL resources.
Fig. 13 illustrates a method for performing wireless communication by a first device, in accordance with an embodiment of the present disclosure. The embodiment of fig. 13 may be combined with various embodiments of the present disclosure.
Referring to fig. 13, in step S1310, a first device may receive first secondary link control information (SCI) including scheduling information for a physical secondary link shared channel (PSSCH) from a second device through a physical secondary link control channel (PSCCH). For example, the first SCI may include information related to priority, information related to frequency resource assignment, information related to time resource assignment, information related to demodulation reference signal (DMRS) pattern, and information related to Modulation and Coding Scheme (MCS). In step S1320, the first device may receive auxiliary information including information related to at least one first resource and information related to a service type from the second device through the PSSCH. In step S1330, the first device may generate a Medium Access Control (MAC) Protocol Data Unit (PDU). In step S1340, the first device may select a Sidelink (SL) resource from among at least one first resource based on the MAC PDU being related to the service type. In step S1350, the first device may transmit a MAC PDU based on the SL resource.
For example, SL resources other than the at least one first resource may be selected based on the MAC PDU being uncorrelated with the service type.
For example, the SL resource may be selected from the at least one first resource based on (i) the assistance information including information related to a priority value, and (ii) the priority value of the MAC PDU being less than or equal to the priority value included in the assistance information.
For example, SL resources may be selected from the at least one first resource based on (i) the auxiliary information including information related to a broadcast type, and (ii) a broadcast type for transmission of the MAC PDU being the same as a broadcast type included in the auxiliary information.
Additionally, for example, the first apparatus may obtain an Reference Signal Received Power (RSRP) value for the at least one first resource based on the assistance information including information related to an RSRP range. In this case, for example, among the at least one first resource, the SL resource may be selected from among at least one resource in which the RSRP value is within the RSRP range.
For example, the assistance information may include information related to a reception available time domain of the second apparatus or information related to a reception unavailable time domain of the second apparatus. For example, the reception available time domain or the reception unavailable time domain may be determined by the second apparatus based on at least one of: scheduling time for Uplink (UL) transmission of the second device, scheduling time for Downlink (DL) reception of the second device, or scheduling time for Sidelink (SL) transmission of the second device. For example, UL transmission or DL reception may be UL transmission or DL reception for random access.
Additionally, for example, the first device may receive a second SCI including a region ID of the second device from the second device through the PSSCH, and the first device may obtain a distance between the first device and the second device based on a location of the first device and the region ID of the second device, and the first device may determine whether to use the auxiliary information based on the distance.
Additionally, for example, the first apparatus may measure a received power related to the PSSCH, and the first apparatus may determine whether to use the assistance information based on the received power.
For example, the priority of the auxiliary information may be configured for each resource pool.
Additionally, for example, the first device may receive a second SCI including a source ID and a destination ID from the second device through the PSSCH. In this case, the source ID or the destination ID may be an ID configured for each resource pool for the auxiliary information.
For example, the auxiliary information may include information related to at least one second resource, and the at least one second resource may be at least one non-preferred resource configured to a first level, and the at least one first resource may be at least one preferred resource configured to a second level.
The proposed method may be applied to an apparatus based on various embodiments of the present disclosure. First, the processor 102 of the first device 100 may control the transceiver 106 to receive first secondary link control information (SCI) including scheduling information for a physical secondary link shared channel (PSSCH) from the second device over a physical secondary link control channel (PSCCH). For example, the first SCI may include information related to priority, information related to frequency resource assignment, information related to time resource assignment, information related to demodulation reference signal (DMRS) pattern, and information related to Modulation and Coding Scheme (MCS). Further, the processor 102 of the first apparatus 100 may control the transceiver 106 to receive the assistance information including the information related to the at least one first resource and the information related to the service type from the second apparatus through the PSSCH. Additionally, the processor 102 of the first apparatus 100 may generate a Medium Access Control (MAC) Protocol Data Unit (PDU). Additionally, the processor 102 of the first apparatus 100 may select a Sidelink (SL) resource from the at least one first resource based on the MAC PDU being associated with the service type. Additionally, the processor 102 of the first device 100 may control the transceiver 106 to transmit MAC PDUs based on SL resources.
Based on embodiments of the present disclosure, a first apparatus adapted to perform wireless communication may be provided. For example, the first apparatus may include: one or more memories storing instructions; one or more transceivers; and one or more processors coupled to the one or more memories and the one or more transceivers. For example, one or more processors may execute instructions to: receiving first secondary link control information (SCI) including scheduling information for a physical secondary link shared channel (PSSCH) from a second apparatus through a physical secondary link control channel (PSCCH), wherein the first SCI includes information related to priority, information related to frequency resource assignment, information related to time resource assignment, information related to demodulation reference signal (DMRS) pattern, and information related to Modulation and Coding Scheme (MCS); receiving side information including information related to at least one first resource and information related to a service type from a second apparatus through a PSSCH; generating a Medium Access Control (MAC) Protocol Data Unit (PDU); selecting a Sidelink (SL) resource from at least one first resource based on the MAC PDU being associated with the service type; and transmits the MAC PDU based on the SL resource.
An apparatus adapted to control a first User Equipment (UE) performing wireless communication may be provided, in accordance with embodiments of the present disclosure. For example, the device may include: one or more processors; and one or more memories operatively connected to the one or more processors and storing instructions. For example, one or more processors may execute instructions to: receiving first secondary link control information (SCI) including scheduling information for a physical secondary link shared channel (PSSCH) from a second UE through a physical secondary link control channel (PSCCH), wherein the first SCI includes information related to priority, information related to frequency resource assignment, information related to time resource assignment, information related to demodulation reference signal (DMRS) pattern, and information related to Modulation and Coding Scheme (MCS); receiving side information including information related to at least one first resource and information related to a service type from a second UE through a PSSCH; generating a Medium Access Control (MAC) Protocol Data Unit (PDU); selecting a Sidelink (SL) resource from at least one first resource based on the MAC PDU being associated with the service type; and transmits the MAC PDU based on the SL resource.
Based on embodiments of the present disclosure, a non-transitory computer-readable storage medium storing instructions may be provided. For example, the instructions, when executed, may cause a first apparatus to: receiving first secondary link control information (SCI) including scheduling information for a physical secondary link shared channel (PSSCH) from a second apparatus through a physical secondary link control channel (PSCCH), wherein the first SCI includes information related to priority, information related to frequency resource assignment, information related to time resource assignment, information related to demodulation reference signal (DMRS) pattern, and information related to Modulation and Coding Scheme (MCS); receiving side information including information related to at least one first resource and information related to a service type from a second apparatus through a PSSCH; generating a Medium Access Control (MAC) Protocol Data Unit (PDU); selecting a Sidelink (SL) resource from at least one first resource based on the MAC PDU being associated with the service type; and transmits the MAC PDU based on the SL resource.
Fig. 14 illustrates a method for performing wireless communication by a second device in accordance with an embodiment of the present disclosure. The embodiment of fig. 14 may be combined with various embodiments of the present disclosure.
Referring to fig. 14, in step S1410, the second device may transmit first secondary link control information (SCI) including scheduling information for a physical secondary link shared channel (PSSCH) to the first device through a physical secondary link control channel (PSCCH). For example, the first SCI may include information related to priority, information related to frequency resource assignment, information related to time resource assignment, information related to demodulation reference signal (DMRS) pattern, and information related to Modulation and Coding Scheme (MCS). In step S1420, the second device may transmit side information including information related to at least one resource and information related to a service type to the first device through the PSSCH. In step S1430, the second device may receive a Medium Access Control (MAC) Protocol Data Unit (PDU) associated with the service type from the first device based on the at least one resource.
The proposed method may be applied to an apparatus based on various embodiments of the present disclosure. First, the processor 202 of the second apparatus 200 may control the transceiver 206 to transmit first secondary link control information (SCI) including scheduling information for a physical secondary link shared channel (PSSCH) to the first apparatus through a physical secondary link control channel (PSCCH). For example, the first SCI may include information related to priority, information related to frequency resource assignment, information related to time resource assignment, information related to demodulation reference signal (DMRS) pattern, and information related to Modulation and Coding Scheme (MCS). Additionally, the processor 202 of the second apparatus 200 may control the transceiver 206 to transmit side information including information related to at least one resource and information related to a service type to the first apparatus through the PSSCH. Additionally, the processor 202 of the second apparatus 200 may control the transceiver 206 to receive a Media Access Control (MAC) Protocol Data Unit (PDU) associated with the service type from the first apparatus based on the at least one resource.
Based on embodiments of the present disclosure, a second apparatus adapted to perform wireless communication may be provided. For example, the second apparatus may include: one or more memories storing instructions; one or more transceivers; and one or more processors coupled to the one or more memories and the one or more transceivers. For example, one or more processors may execute instructions to: transmitting first secondary link control information (SCI) including scheduling information for a physical secondary link shared channel (PSSCH) to a first apparatus through a physical secondary link control channel (PSCCH), wherein the first SCI includes information related to priority, information related to frequency resource assignment, information related to time resource assignment, information related to demodulation reference signal (DMRS) pattern, and information related to Modulation and Coding Scheme (MCS); transmitting side information including information related to at least one resource and information related to a service type to a first device through a PSSCH; and receiving a Media Access Control (MAC) Protocol Data Unit (PDU) associated with the service type from the first device based on the at least one resource.
In accordance with embodiments of the present disclosure, an apparatus may be provided that is adapted to control a second User Equipment (UE) performing wireless communication. For example, the apparatus may include: one or more processors; and one or more memories operatively connected to the one or more processors and storing instructions. For example, one or more processors may execute instructions to: transmitting first secondary link control information (SCI) including scheduling information for a physical secondary link shared channel (PSSCH) to a first UE through a physical secondary link control channel (PSCCH), wherein the first SCI includes information related to priority, information related to frequency resource assignment, information related to time resource assignment, information related to demodulation reference signal (DMRS) pattern, and information related to Modulation and Coding Scheme (MCS); transmitting auxiliary information including information related to at least one resource and information related to a service type to the first UE through the PSSCH; and receiving a Media Access Control (MAC) Protocol Data Unit (PDU) associated with the service type from the first UE based on the at least one resource.
Based on embodiments of the present disclosure, a non-transitory computer-readable storage medium storing instructions may be provided. For example, the instructions, when executed, may cause the second apparatus to: transmitting first secondary link control information (SCI) including scheduling information for a physical secondary link shared channel (PSSCH) to a first apparatus through a physical secondary link control channel (PSCCH), wherein the first SCI includes information related to priority, information related to frequency resource assignment, information related to time resource assignment, information related to demodulation reference signal (DMRS) pattern, and information related to Modulation and Coding Scheme (MCS); transmitting side information including information related to at least one resource and information related to a service type to a first device through a PSSCH; and receiving a Media Access Control (MAC) Protocol Data Unit (PDU) associated with the service type from the first device based on the at least one resource.
Based on various embodiments of the present disclosure, a UE that has received assistance information may efficiently (re) select resources for transmission of the UE based on the assistance information.
The various embodiments of the present disclosure may be combined with each other.
Hereinafter, an apparatus to which the respective embodiments of the present disclosure may be applied will be described.
The various descriptions, functions, procedures, suggestions, methods and/or operational flows of the present disclosure described in this document may be applied to, but are not limited to, various fields requiring wireless communication/connection (e.g., 5G) between devices.
Hereinafter, a description will be given in more detail with reference to the accompanying drawings. In the following figures/description, like reference numerals may refer to like or corresponding hardware, software, or functional blocks unless otherwise specified.
Fig. 15 shows a communication system (1) according to an embodiment of the present disclosure.
Referring to fig. 15, a communication system (1) to which various embodiments of the present disclosure are applied includes a wireless device, a Base Station (BS), and a network. Herein, a wireless device refers to a device that performs communication using a Radio Access Technology (RAT), such as a 5G New RAT (NR) or Long Term Evolution (LTE), and may be referred to as a communication/radio/5G device. Wireless devices may include, but are not limited to, robots (100 a), vehicles (100 b-1, 100 b-2), augmented reality (XR) devices (100 c), handheld devices (100 d), home appliances (100 e), internet of things (IoT) devices (100 f), and Artificial Intelligence (AI) devices/servers (400). For example, the vehicles may include vehicles having wireless communication functions, autonomous vehicles, and vehicles capable of performing inter-vehicle communication. Herein, a vehicle may include an Unmanned Aerial Vehicle (UAV) (e.g., an unmanned aerial vehicle). XR devices may include Augmented Reality (AR)/Virtual Reality (VR)/Mixed Reality (MR) devices and may be implemented in the form of head-mounted devices (HMDs), head-up displays (HUDs) installed in vehicles, televisions, smartphones, computers, wearable devices, home appliance devices, digital signage, vehicles, robots, and the like. Handheld devices may include smart phones, smart boards, wearable devices (e.g., smart watches or smart glasses), and computers (e.g., notebooks). Home appliances may include TVs, refrigerators, and washing machines. IoT devices may include sensors and smart meters. For example, the BS and network may be implemented as wireless devices, and a particular wireless device (200 a) may operate as a BS/network node relative to other wireless devices.
Here, the wireless communication technology implemented in the wireless apparatuses 100a to 100f of the present disclosure may include a narrowband internet of things for low power communication in addition to LTE, NR, and 6G. In this case, for example, the NB-IoT technology may be an example of Low Power Wide Area Network (LPWAN) technology and may be implemented as standards such as LTE Cat NB1 and/or LTE Cat NB2, not limited to the names described above. Additionally or alternatively, wireless communication techniques implemented in the wireless devices 100 a-100 f of the present disclosure may perform communications based on LTE-M techniques. In this case, as an example, the LTE-M technology may be an example of an LPWAN, and may be referred to as various names including enhanced machine type communication (eMTC), and the like. For example, LTE-M technology may be implemented as at least any of various standards such as, but not limited to, 1) LTE CAT 0, 2) LTE CAT M1, 3) LTE CAT M2, 4) LTE non-bandwidth limited (non-BL), 5) LTE-MTC, 6) LTE machine type communications, and/or 7) LTE M. Additionally or alternatively, the wireless communication technology implemented in the wireless devices 100a to 100f of the present disclosure may include at least one of bluetooth, a Low Power Wide Area Network (LPWAN), and ZigBee in view of low power communication, and is not limited to the above names. As an example, the ZigBee technology may generate a Personal Area Network (PAN) related to small/low power digital communication based on various standards including IEEE 802.15.4 and the like, and may be referred to as various names.
The wireless devices 100a to 100f may be connected to the network 300 via the BS 200. AI technology may be applied to the wireless devices 100a to 100f, and the wireless devices 100a to 100f may be connected to the AI server 400 via the network 300. The network 300 may be configured using a 3G network, a 4G (e.g., LTE) network, or a 5G (e.g., NR) network. Although the wireless devices 100a to 100f may communicate with each other through the BS 200/network 300, the wireless devices 100a to 100f may perform direct communication (e.g., sidelink communication) with each other without passing through the BS/network. For example, the vehicles 100b-1 and 100b-2 may perform direct communications (e.g., vehicle-to-vehicle (V2V)/vehicle-to-everything (V2X) communications). IoT devices (e.g., sensors) may perform direct communication with other IoT devices (e.g., sensors) or other wireless devices 100 a-100 f.
Wireless communication/connection 150a, 150b, or 150c may be established between wireless devices 100 a-100 f/BS 200 or BS 200/BS 200. Here, the wireless communication/connection may be established through various RATs (e.g., 5G NR) such as uplink/downlink communication 150a, secondary link communication 150b (or D2D communication), or inter-BS communication (e.g., relay, access backhaul Integration (IAB)). The wireless device and BS/wireless device may transmit/receive radio signals to/from each other through wireless communication/connections 150a and 150 b. For example, the wireless communication/connections 150a and 150b may transmit/receive signals over various physical channels. To this end, at least a part of various configuration information configuration procedures for transmitting/receiving radio signals, various signal processing procedures (e.g., channel coding/decoding, modulation/demodulation, and resource mapping/demapping), and resource allocation procedures may be performed based on various proposals of the present disclosure.
Fig. 16 illustrates a wireless device according to an embodiment of the present disclosure.
Referring to fig. 16, the first wireless device (100) and the second wireless device (200) may transmit radio signals through various RATs (e.g., LTE and NR). Herein, { the first wireless device (100) and the second wireless device (200) } may correspond to { wireless device (100 x) and BS (200) } and/or { wireless device (100 x) and wireless device (100 x) } in fig. 15.
The first wireless device 100 may include one or more processors 102 and one or more memories 104, and may additionally further include one or more transceivers 106 and/or one or more antennas 108. The processor(s) 102 may control the memory(s) 104 and/or transceiver(s) 106 and may be configured to implement the descriptions, functions, processes, proposals, methods and/or operational flows disclosed herein. For example, the processor(s) 102 may process the information in the memory(s) 104 to generate first information/signals and then transmit radio signals including the first information/signals through the transceiver(s) 106. The processor(s) 102 may receive radio signals including the second information/signals through the transceiver 106 and then store information resulting from processing the second information/signals in the memory(s) 104. The memory(s) 104 may be connected to the processor(s) 102 and may store various information related to the operation of the processor(s) 102. For example, the memory(s) 104 may store software code including instructions for performing part or all of the processing controlled by the processor(s) 102 or for performing the descriptions, functions, procedures, suggestions, methods, and/or operational flows disclosed herein. Here, the processor(s) 102 and the memory(s) 104 may be part of a communication modem/circuit/chip designed to implement a RAT (e.g., LTE or NR). The transceiver(s) 106 may be connected to the processor(s) 102 and transmit and/or receive radio signals through the antenna(s) 108. Each transceiver 106 may include a transmitter and/or a receiver. The transceiver(s) 106 may be used interchangeably with Radio Frequency (RF) unit(s). In this disclosure, a wireless device may represent a communication modem/circuit/chip.
The second wireless device 200 may include one or more processors 202 and one or more memories 204, and may additionally further include one or more transceivers 206 and/or one or more antennas 208. The processor(s) 202 may control the memory(s) 204 and/or transceiver(s) 206 and may be configured to implement the descriptions, functions, processes, proposals, methods and/or operational flows disclosed herein. For example, the processor(s) 202 may process the information in the memory(s) 204 to generate third information/signals and then transmit radio signals including the third information/signals through the transceiver(s) 206. The processor(s) 202 may receive radio signals including fourth information/signals through the transceiver(s) 106 and then store information resulting from processing the fourth information/signals in the memory(s) 204. The memory(s) 204 may be connected to the processor(s) 202 and may store various information related to the operation of the processor(s) 202. For example, memory(s) 204 may store software code including instructions for performing part or all of the processing controlled by processor(s) 202 or for performing the descriptions, functions, procedures, suggestions, methods, and/or operational flows disclosed herein. Here, the processor(s) 202 and the memory(s) 204 may be part of a communication modem/circuit/chip designed to implement a RAT (e.g., LTE or NR). The transceiver(s) 206 may be connected to the processor(s) 202 and transmit and/or receive radio signals through the antenna(s) 208. Each transceiver 206 can include a transmitter and/or a receiver. The transceiver(s) 206 may be used interchangeably with RF unit(s). In this disclosure, a wireless device may represent a communication modem/circuit/chip.
The hardware elements of wireless devices 100 and 200 will be described in more detail below. One or more protocol layers may be implemented by, but are not limited to, one or more processors 102 and 202. For example, one or more of processors 102 and 202 may implement one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC and SDAP). The one or more processors 102 and 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 flows disclosed herein. One or more processors 102 and 202 may generate messages, control information, data, or information in accordance with the descriptions, functions, procedures, suggestions, methods, and/or operational flows disclosed herein. The one or more processors 102 and 202 may generate signals (e.g., baseband signals) including PDUs, SDUs, messages, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and/or operational procedures disclosed herein and provide the generated signals to the one or more transceivers 106 and 206. The one or more processors 102 and 202 may receive signals (e.g., baseband signals) from the one or more transceivers 106 and 206 and obtain PDUs, SDUs, messages, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and/or operational procedures disclosed herein.
The one or more processors 102 and 202 may be referred to as a controller, microcontroller, microprocessor, or microcomputer. One or more of processors 102 and 202 may be implemented in hardware, firmware, software, or a combination thereof. For example, one or more Application Specific Integrated Circuits (ASICs), one or more Digital Signal Processors (DSPs), one or more Digital Signal Processing Devices (DSPDs), one or more Programmable Logic Devices (PLDs), or one or more Field Programmable Gate Arrays (FPGAs) may be included in the one or more processors 102 and 202. The descriptions, functions, procedures, suggestions, methods and/or operational flows disclosed in this document may be implemented using firmware or software, and the firmware or software may be configured to include modules, procedures or functions. Firmware or software configured to perform the descriptions, functions, procedures, suggestions, methods, and/or operational flows disclosed in this document may be included in one or more processors 102 and 202 or stored in one or more memories 104 and 204, driven by one or more processors 102 and 202. The descriptions, functions, procedures, suggestions, methods and/or operational flows disclosed in this document may be implemented using software or firmware in the form of codes, commands and/or command sets.
The one or more memories 104 and 204 may be coupled to the one or more processors 102 and 202 and may store various types of data, signals, messages, information, programs, code, instructions, and/or commands. One or more of the memories 104 and 204 may be comprised of read-only memory (ROM), random-access memory (RAM), electrically erasable programmable read-only memory (EPROM), flash memory, hard drives, registers, cache memory, a computer-readable storage medium, and/or combinations thereof. The one or more memories 104 and 204 may be located internal and/or external to the one or more processors 102 and 202. The one or more memories 104 and 204 may be connected to the one or more processors 102 and 202 by various techniques such as a wired or wireless connection.
One or more transceivers 106 and 206 may transmit the user data, control information, and/or radio signals/channels referred to in the methods and/or operational flows of this document to one or more other devices. One or more transceivers 106 and 206 may receive the user data, control information, and/or radio signals/channels mentioned in the descriptions, functions, procedures, proposals, methods, and/or operational flows disclosed herein from one or more other devices. For example, one or more transceivers 106 and 206 may be coupled to one or more processors 102 and 202 and may transmit and receive radio signals. For example, the one or more processors 102 and 202 may perform control such that the one or more transceivers 106 and 206 may transmit user data, control information, or radio signals to one or more other devices. The one or more processors 102 and 202 may perform control such that the one or more transceivers 106 and 206 may receive user data, control information, or radio signals from one or more other devices. One or more transceivers 106 and 206 may be connected to one or more antennas 108 and 208, and one or more transceivers 106 and 206 may be configured to transmit and receive the user data, control information, and/or radio signals/channels mentioned in the descriptions, functions, procedures, proposals, methods, and/or operational flows disclosed herein through one or more antennas 108 and 208. In this document, the one or more antennas may be multiple physical antennas or multiple logical antennas (e.g., antenna ports). The one or more transceivers 106 and 206 may convert received radio signals/channels, etc., from RF band signals to baseband signals to process the received user data, control information, radio signals/channels, etc., using the one or more processors 102 and 202. The one or more transceivers 106 and 206 may convert user data, control information, radio signals/channels, etc., processed using the one or more processors 102 and 202 from baseband signals to RF band signals. To this end, one or more of the transceivers 106 and 206 may comprise (analog) oscillators and/or filters.
Fig. 17 shows a signal processing circuit for transmitting a signal according to an embodiment of the present disclosure.
Referring to fig. 17, 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. 17 may be performed without limitation to the processor (102, 202) and/or transceiver (106, 206) of fig. 16. The hardware elements of fig. 17 may be implemented by the processor (102, 202) and/or the transceiver (106, 206) of fig. 16. Blocks 1010 through 1060 may be implemented, for example, by the processor (102, 202) of fig. 16. Alternatively, blocks 1010 through 1050 may be implemented by the processor (102, 202) of fig. 16, and block 1060 may be implemented by the transceiver (106, 206) of fig. 16.
The codeword may be converted into a radio signal via the signal processing circuit (1000) of fig. 17. Herein, a codeword is a coded bit sequence of an information block. The information blocks may include transport blocks (e.g., UL-SCH transport blocks, DL-SCH transport blocks). The radio signal may be transmitted through various physical channels (e.g., PUSCH and PDSCH).
In particular, the codeword may be converted into a scrambled bit sequence by the scrambler 1010. The scrambling sequence used for scrambling may be generated based on an initial value, and the initial value may include ID information of the wireless device. The scrambled bit sequence may be modulated into a modulation symbol sequence by modulator 1020. The modulation scheme may include pi/2-binary phase shift keying (pi/2-BPSK), m-phase shift keying (m-PSK), and m-quadrature amplitude modulation (m-QAM). The complex modulation symbol sequence may be mapped to one or more transport layers by layer mapper 1030. The modulation symbols for each transport layer may be mapped (precoded) to the corresponding antenna port(s) by precoder 1040. The output z of the precoder 1040 may be derived by multiplying the output y of the layer mapper 1030 by an N x M precoding matrix W. Here, N is the number of antenna ports and M is the number of transmission layers. The precoder 1040 may perform precoding after performing transform precoding (e.g., DFT) on the complex modulation symbols. Alternatively, the precoder 1040 may perform precoding without performing transform precoding.
The resource mapper 1050 may map the modulation symbols for each antenna port to time-frequency resources. The time-frequency resources may include a plurality of symbols in the time domain (e.g., CP-OFDMA symbols and DFT-s-OFDMA symbols) and a plurality of subcarriers in the frequency domain. The signal generator 1060 may generate a radio signal from the mapped modulation symbols, and the generated radio signal may be transmitted to other devices through each antenna. To this end, the signal generator 1060 may include an Inverse Fast Fourier Transform (IFFT) module, a Cyclic Prefix (CP) inserter, a digital-to-analog converter (DAC), and an up-converter.
The signal processing for the signals received in the wireless device may be configured in a manner that is inverse to the signal processing (1010-1060) of fig. 17. For example, a wireless device (e.g., 100, 200 of fig. 16) may receive radio signals from outside through an antenna port/transceiver. The received radio signal may be converted into a baseband signal by a signal restorer. To this end, the signal restorer may include a frequency downlink converter, an analog-to-digital converter (ADC), a CP remover, and a Fast Fourier Transform (FFT) module. The baseband signal may then be recovered into codewords by a resource demapping process, a post-coding process, a demodulation processor, and a descrambling process. The codeword may be restored to the original information block by decoding. Accordingly, a signal processing circuit (not illustrated) for receiving a signal may include a signal restorer, a resource demapper, a post encoder, a demodulator, a descrambler, and a decoder.
Fig. 18 illustrates another example of a wireless device according to an embodiment of the present disclosure. The wireless device may be implemented in various forms according to use cases/services (refer to fig. 15).
Referring to fig. 18, a wireless device (100, 200) may correspond to the wireless device (100, 200) of fig. 16 and may be configured by various elements, assemblies, units/portions, and/or modules. For example, each of the wireless devices (100, 200) may include a communication unit (110), a control unit (120), a memory unit (130), and an additional component (140). The communication unit may include a communication circuit (112) and a transceiver(s) (114). For example, the communication circuit (112) may include one or more processors (102, 202) and/or one or more memories (104, 204) of fig. 16. For example, the transceiver(s) (114) may include one or more transceivers (106, 206) and/or one or more antennas (108, 208) of fig. 16. The control unit (120) is electrically connected to the communication unit (110), the memory (130) and the additional components (140), and controls the overall operation of the wireless device. For example, the control unit (120) may control the electrical/mechanical operation of the wireless device based on programs/code/commands/information stored in the memory unit (130). The control unit (120) may transmit information stored in the memory unit (130) to the outside (e.g., other communication device) via the communication unit (110) through a wireless/wired interface, or store information received from the outside (e.g., other communication device) through the wireless/wired interface via the communication unit (110) in the memory unit (130).
The additional components (140) may be variously configured according to the type of wireless device. For example, the additional component (140) may include at least one of a power unit/battery, an input/output (I/O) unit, a driving unit, and a computing unit. The wireless device may be implemented in, but not limited to, the following forms: robot (100 a of fig. 15), vehicle (100 b-1 and 100b-2 of fig. 15), XR device (100 c of fig. 15), handheld device (100 d of fig. 1546), home appliance (100 e of fig. 15), ioT device (100 f of fig. 15), digital broadcast terminal, hologram device, public safety device, MTC device, medical device, financial science and technology device (or financial device), security device, climate/environment device, AI server/device (400 of fig. 15), BS (200 of fig. 15), network node, etc. Depending on the use case/service, the wireless device may be used in a mobile or stationary location.
In fig. 18, various elements, components, units/portions and/or modules in the wireless device (100, 200) may all be connected to each other through a wired interface, or at least portions thereof may be connected wirelessly through the communication unit (110). For example, in each of the wireless devices (100, 200), the control unit (120) and the communication unit (110) may be connected by wire, and the control unit (120) and the first unit (e.g., 130, 140) may be connected wirelessly by the communication unit (110). Each element, component, unit/section and/or module within the wireless device (100, 200) may also include one or more elements. For example, the control unit (120) may be constructed by a set of one or more processors. As an example, the control unit (120) may be constructed by a set of a communication control processor, an application processor, an Electronic Control Unit (ECU), a graphics processing unit, and a memory control processor. As another example, the memory (130) may be constructed from Random Access Memory (RAM), dynamic RAM (DRAM), read Only Memory (ROM), flash memory, volatile memory, non-volatile memory, and/or combinations thereof.
Hereinafter, an example of implementing fig. 18 will be described in detail with reference to the accompanying drawings.
Fig. 19 illustrates a handheld device according to an embodiment of the present disclosure. The handheld device may include a smart phone, a smart pad, a wearable device (e.g., a smart watch or smart glasses), or a portable computer (e.g., a notebook). The handheld 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).
Referring to fig. 19, the handheld device (100) may include an antenna unit (108), a communication unit (110), a control unit (120), a memory unit (130), a power supply unit (140 a), an interface unit (140 b), and an I/O unit (140 c). The antenna unit (108) may be configured as part of a communication unit (110). Blocks 110 through 130/140a through 140c correspond to blocks 110 through 130/140, respectively, of fig. 18.
The communication unit 110 may transmit and receive signals (e.g., data signals and control signals) to and from other wireless devices or BSs. The control unit 120 may perform various operations by controlling constituent elements of the handheld device 100. The control unit 120 may include an Application Processor (AP). The memory unit 130 may store data/parameters/programs/codes/commands required to drive the handheld device 100. The memory unit 130 may store input/output data/information. The power supply unit 140a may supply power to the handheld device 100 and include a wired/wireless charging circuit, a battery, and the like. The interface unit 140b may support connection of the handheld device 100 to other external devices. The interface unit 140b may include various ports (e.g., an audio I/O port and a video I/O port) for connection with external devices. The I/O unit 140c may input or output video information/signals, audio information/signals, data, and/or information input by a user. The I/O unit 140c may include a camera, a microphone, a user input unit, a display unit 140d, a speaker, and/or a haptic module.
For example, in the case of data communication, the I/O unit 140c may acquire information/signals (e.g., touch, text, voice, image, or video) input by the user, and the acquired information/signals may be stored in the memory unit 130. The communication unit 110 may convert information/signals stored in the memory into radio signals and transmit the converted radio signals directly to other wireless devices or to the BS. The communication unit 110 may receive radio signals from other wireless devices or BSs and then restore the received radio signals to original information/signals. The recovered information/signals may be stored in the memory unit 130 and may be output as various types (e.g., text, voice, image, video, or haptic) through the I/O unit 140.
Fig. 20 illustrates a vehicle or autonomous vehicle according to an embodiment of the present disclosure. The vehicle or autonomous vehicle may be implemented by a mobile robot, a car, a train, a manned/unmanned Aircraft (AV), a ship, or the like.
Referring to fig. 20, a vehicle or autonomous vehicle (100) may include an antenna unit (108), a communication unit (110), a control unit (120), a driving unit (140 a), a power supply unit (140 b), a sensor unit (140 c), and an autonomous driving unit (140 d). The antenna unit (108) may be configured as part of a communication unit (110). Blocks 110/130/140a through 140d correspond to blocks 110/130/140, respectively, of FIG. 18.
The communication unit 110 may transmit and receive signals (e.g., data signals and control signals) to and from external devices such as other vehicles, BSs (e.g., gNB and roadside units), and servers. The control unit 120 may perform various operations by controlling elements of the vehicle or the autonomously driven vehicle 100. The control unit 120 may include an Electronic Control Unit (ECU). The drive unit 140a may cause the vehicle or the autonomous driving vehicle 100 to travel on the road. The drive unit 140a may include an engine, motor, transmission, wheels, brakes, steering, etc. The power supply unit 140b may supply power to the vehicle or the autonomous driving vehicle 100, and may include a wired/wireless charging circuit, a battery, and the like. The sensor unit 140c may acquire a vehicle state, external environment information, user information, and the like. The sensor unit 140c may include an Inertial Measurement Unit (IMU) sensor, a collision sensor, a wheel sensor, a speed sensor, a gradient sensor, a weight sensor, a heading sensor, a position module, a vehicle forward/backward sensor, a battery sensor, a fuel sensor, a tire sensor, a steering sensor, a temperature sensor, a humidity sensor, an ultrasonic sensor, an illumination sensor, a pedal position sensor, and the like. The autonomous driving unit 140d may implement a technique for keeping a lane in which the vehicle is traveling, a technique for automatically adjusting a speed (e.g., adaptive cruise control), a technique for autonomously driving along a determined path, a technique for driving by automatically setting a path in the case where a destination is set, and the like.
For example, the communication unit 110 may receive map data, traffic information data, and the like from an external server. The autonomous driving unit 140d may generate an autonomous driving path and a driving plan from the acquired data. The control unit 120 may control the drive unit 140a such that the vehicle or the autonomous driving vehicle 100 may move along the autonomous driving path according to a driving plan (e.g., speed/direction control). In the middle of autonomous driving, the communication unit 110 may aperiodically/periodically acquire the latest traffic information data from an external server and acquire surrounding traffic information data from neighboring vehicles. In between autonomous driving, the sensor unit 140c may acquire vehicle state and/or ambient information. The autonomous driving unit 140d may update the autonomous driving path and the driving plan based on the newly acquired data/information. The communication unit 110 may transmit information about the vehicle position, the autonomous driving path, and/or the driving plan to an external server. The external server may predict traffic information data using AI technology or the like based on information collected from the vehicle or the autonomous driving vehicle, and provide the predicted traffic information data to the vehicle or the autonomous driving vehicle.
The claims in this specification may be combined in various ways. For example, the technical features in the method claims of the present description may be combined to be implemented or performed in a device, and the technical features in the device claims may be combined to be implemented or performed in a method. In addition, the technical features in the method claim(s) and the device claim(s) may be combined to be implemented or performed in the device. In addition, technical features in the method claim(s) and the apparatus claim(s) may be combined to be implemented or performed in the method.

Claims (20)

1. A method for performing wireless communications by a first device, the method comprising:
receiving first secondary link control information (SCI) including scheduling information for a physical secondary link shared channel (PSSCH) from a second apparatus through a physical secondary link control channel (PSCCH), wherein the first SCI includes information related to priority, information related to frequency resource assignment, information related to time resource assignment, information related to demodulation reference signal (DMRS) pattern, and information related to Modulation and Coding Scheme (MCS);
Receiving side information including information related to at least one first resource and information related to a service type from the second apparatus through the PSSCH;
generating a Medium Access Control (MAC) Protocol Data Unit (PDU);
selecting a Sidelink (SL) resource from among the at least one first resource based on the MAC PDU being associated with the service type; and
and transmitting the MAC PDU based on the SL resource.
2. The method of claim 1, wherein the SL resources other than the at least one first resource are selected based on the MAC PDU being uncorrelated with the service type.
3. The method of claim 1, wherein the SL resource is selected from among the at least one first resource based on (i) the assistance information comprising information related to a priority value, and (ii) the MAC PDU having a priority value less than or equal to the priority value included in the assistance information.
4. The method of claim 1, wherein the SL resource is selected from among the at least one first resource based on (i) the assistance information including information related to a broadcast type, and (ii) a broadcast type for transmission of the MAC PDU being the same as the broadcast type included in the assistance information.
5. The method of claim 1, further comprising:
obtaining an Reference Signal Received Power (RSRP) value for the at least one first resource based on the assistance information including information related to an RSRP range,
wherein among the at least one first resource, the SL resource is selected from at least one resource in which the RSRP value is within the RSRP range.
6. The method of claim 1, wherein the assistance information comprises information related to a reception available time domain of the second apparatus or information related to a reception unavailable time domain of the second apparatus.
7. The method of claim 6, wherein the reception-available time domain or the reception-unavailable time domain is determined by the second apparatus based on at least one of: a scheduling time for Uplink (UL) transmission of the second device, a scheduling time for Downlink (DL) reception of the second device, or a scheduling time for Sidelink (SL) transmission of the second device.
8. The method of claim 7, wherein the UL transmission or the DL reception is UL transmission or DL reception for random access.
9. The method of claim 1, further comprising:
receiving a second SCI including a region ID of the second device from the second device through the PSSCH;
obtaining a distance between the first device and the second device based on a location of the first device and the area ID of the second device; and
determining whether to use the auxiliary information based on the distance.
10. The method of claim 1, further comprising:
measuring a received power associated with the PSSCH; and
determining whether to use the auxiliary information based on the received power.
11. The method of claim 1, wherein a priority of the assistance information is configured for each resource pool.
12. The method of claim 1, further comprising:
receiving a second SCI including a source ID and a destination ID from the second device through the PSSCH,
wherein the source ID or the destination ID is an ID configured for each resource pool for the auxiliary information.
13. The method of claim 1, wherein the assistance information comprises information related to at least one second resource,
wherein the at least one second resource is at least one non-preferred resource configured as a first level, and
Wherein the at least one first resource is at least one preferred resource configured to be at a second level.
14. A first apparatus adapted to perform wireless communication, the first apparatus comprising:
one or more memories storing instructions;
one or more transceivers; and
one or more processors coupled to the one or more memories and the one or more transceivers, wherein the one or more processors execute the instructions to:
receiving first secondary link control information (SCI) including scheduling information for a physical secondary link shared channel (PSSCH) from a second apparatus through a physical secondary link control channel (PSCCH), wherein the first SCI includes information related to priority, information related to frequency resource assignment, information related to time resource assignment, information related to demodulation reference signal (DMRS) pattern, and information related to Modulation and Coding Scheme (MCS);
receiving side information including information related to at least one first resource and information related to a service type from the second apparatus through the PSSCH;
Generating a Medium Access Control (MAC) Protocol Data Unit (PDU);
selecting a Sidelink (SL) resource from among the at least one first resource based on the MAC PDU being associated with the service type; and
and transmitting the MAC PDU based on the SL resource.
15. An apparatus adapted to control a first User Equipment (UE) performing wireless communication, the apparatus comprising:
one or more processors; and
one or more memories operably connected to the one or more processors and storing instructions, wherein the one or more processors execute the instructions to:
receiving first secondary link control information (SCI) including scheduling information for a physical secondary link shared channel (PSSCH) from a second UE through a physical secondary link control channel (PSCCH), wherein the first SCI includes information related to priority, information related to frequency resource assignment, information related to time resource assignment, information related to demodulation reference signal (DMRS) pattern, and information related to Modulation and Coding Scheme (MCS);
receiving side information including information related to at least one first resource and information related to a service type from the second UE through the PSSCH;
Generating a Medium Access Control (MAC) Protocol Data Unit (PDU);
selecting a Sidelink (SL) resource from among the at least one first resource based on the MAC PDU being associated with the service type; and
and transmitting the MAC PDU based on the SL resource.
16. A non-transitory computer-readable storage medium storing instructions that, when executed, cause a first device to:
receiving first secondary link control information (SCI) including scheduling information for a physical secondary link shared channel (PSSCH) from a second apparatus through a physical secondary link control channel (PSCCH), wherein the first SCI includes information related to priority, information related to frequency resource assignment, information related to time resource assignment, information related to demodulation reference signal (DMRS) pattern, and information related to Modulation and Coding Scheme (MCS);
receiving side information including information related to at least one first resource and information related to a service type from the second apparatus through the PSSCH;
generating a Medium Access Control (MAC) Protocol Data Unit (PDU);
selecting a Sidelink (SL) resource from among the at least one first resource based on the MAC PDU being associated with the service type; and
And transmitting the MAC PDU based on the SL resource.
17. A method for performing wireless communication by a second device, the method comprising:
transmitting first secondary link control information (SCI) including scheduling information for a physical secondary link shared channel (PSSCH) to a first apparatus through a physical secondary link control channel (PSCCH), wherein the first SCI includes information related to priority, information related to frequency resource assignment, information related to time resource assignment, information related to demodulation reference signal (DMRS) pattern, and information related to Modulation and Coding Scheme (MCS);
transmitting side information including information related to at least one first resource and information related to a service type to the first apparatus through the PSSCH; and
a Medium Access Control (MAC) Protocol Data Unit (PDU) associated with the service type is received from the first device based on the at least one resource.
18. A second apparatus adapted to perform wireless communication, the second apparatus comprising:
one or more memories storing instructions;
one or more transceivers; and
one or more processors coupled to the one or more memories and the one or more transceivers, wherein the one or more processors execute the instructions to:
Transmitting first secondary link control information (SCI) including scheduling information for a physical secondary link shared channel (PSSCH) to a first apparatus through a physical secondary link control channel (PSCCH), wherein the first SCI includes information related to priority, information related to frequency resource assignment, information related to time resource assignment, information related to demodulation reference signal (DMRS) pattern, and information related to Modulation and Coding Scheme (MCS);
transmitting side information including information related to at least one first resource and information related to a service type to the first apparatus through the PSSCH; and
a Medium Access Control (MAC) Protocol Data Unit (PDU) associated with the service type is received from the first device based on the at least one resource.
19. An apparatus adapted to control a second User Equipment (UE) performing wireless communication, the apparatus comprising:
one or more processors; and
one or more memories operably connected to the one or more processors and storing instructions, wherein the one or more processors execute the instructions to:
transmitting first secondary link control information (SCI) including scheduling information for a physical secondary link shared channel (PSSCH) to a first UE through a physical secondary link control channel (PSCCH), wherein the first SCI includes information related to priority, information related to frequency resource assignment, information related to time resource assignment, information related to demodulation reference signal (DMRS) pattern, and information related to Modulation and Coding Scheme (MCS);
Transmitting auxiliary information including information related to at least one first resource and information related to a service type to the first UE through the PSSCH; and
a Medium Access Control (MAC) Protocol Data Unit (PDU) associated with the service type is received from the first UE based on the at least one resource.
20. A non-transitory computer-readable storage medium storing instructions that, when executed, cause a second device to:
transmitting first secondary link control information (SCI) including scheduling information for a physical secondary link shared channel (PSSCH) to a first apparatus through a physical secondary link control channel (PSCCH), wherein the first SCI includes information related to priority, information related to frequency resource assignment, information related to time resource assignment, information related to demodulation reference signal (DMRS) pattern, and information related to Modulation and Coding Scheme (MCS);
transmitting side information including information related to at least one first resource and information related to a service type to the first apparatus through the PSSCH; and
a Medium Access Control (MAC) Protocol Data Unit (PDU) associated with the service type is received from the first device based on the at least one resource.
CN202180060083.1A 2020-07-22 2021-07-08 Method and apparatus for performing SL communication based on auxiliary information in NR V2X Pending CN116530180A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
KR10-2020-0090768 2020-07-22
KR10-2020-0098724 2020-08-06
KR20200110316 2020-08-31
KR10-2020-0110316 2020-08-31
PCT/KR2021/008739 WO2022019540A1 (en) 2020-07-22 2021-07-08 Method and device for performing sl communication on basis of assistance information in nr v2x

Publications (1)

Publication Number Publication Date
CN116530180A true CN116530180A (en) 2023-08-01

Family

ID=87390796

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202180060083.1A Pending CN116530180A (en) 2020-07-22 2021-07-08 Method and apparatus for performing SL communication based on auxiliary information in NR V2X

Country Status (1)

Country Link
CN (1) CN116530180A (en)

Similar Documents

Publication Publication Date Title
CN114747167B (en) Method and apparatus for transmitting and receiving HARQ feedback information based on SCI format in NR V2X
EP4185032A1 (en) Method and device for performing sl communication in nr v2x on basis of auxiliary information
CN113661729B (en) Method and apparatus for transmitting information related to a sidelink channel in NR V2X
CN114747166B (en) Method and apparatus for reporting HARQ feedback information to a base station in NR V2X
US11778640B2 (en) Method and device for performing SL communication on basis of assistance information in NR V2X
CN114586306B (en) Method and equipment for determining HARQ feedback priority in NR V2X
CN113994611B (en) Method and device for determining RSRP in NR V2X
US20230180216A1 (en) Method and device for performing sl communication on basis of assistance information in nr v2x
CN114762278B (en) Method and apparatus for reporting HARQ feedback to a base station in NR V2X
CN114830577B (en) Method and apparatus for performing sidelink retransmission based on CR in NR V2X
CN116686242A (en) Method and apparatus for performing SL DRX operation based on HARQ feedback in NR V2X
CN114557099A (en) Method and apparatus for performing SL communication based on PSFCH overhead in NR V2X
CN116349355A (en) Method and apparatus for performing resource reselection in NR V2X
CN116368919A (en) Method and apparatus for improving resource allocation in NR V2X
CN114830552A (en) Method and apparatus for transmitting information on channel state in NR V2X
CN115699648A (en) Method and apparatus for performing mode 1 SL communication in NR V2X
CN116548050A (en) Method and apparatus for communication in a wireless communication system supporting multicast
CN115553053A (en) Method and apparatus for performing DTX-based RLF operation in NR V2X
CN115315978A (en) Method and apparatus for performing congestion control in NR V2X
CN114930932A (en) Method and apparatus for retransmitting sidelink in NR V2X
CN114503481B (en) Method and device for transmitting HARQ feedback based on BWP in NR V2X
CN116941276A (en) Method and apparatus for obtaining CBR values based on partial sensing in NR V2X
CN115088317A (en) Method and apparatus for performing a prioritization procedure in NR V2X
CN116134874A (en) Method and apparatus for efficiently supporting NR V2X communications
CN116158037A (en) Method and apparatus for reporting SL HARQ feedback to a base station in NR V2X

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination