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WO2025150663A1 - Procédé et dispositif de réalisation de communications par un terminal dans un système de communication sans fil - Google Patents

Procédé et dispositif de réalisation de communications par un terminal dans un système de communication sans fil

Info

Publication number
WO2025150663A1
WO2025150663A1 PCT/KR2024/015883 KR2024015883W WO2025150663A1 WO 2025150663 A1 WO2025150663 A1 WO 2025150663A1 KR 2024015883 W KR2024015883 W KR 2024015883W WO 2025150663 A1 WO2025150663 A1 WO 2025150663A1
Authority
WO
WIPO (PCT)
Prior art keywords
base station
communication
response message
terminal
information
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
PCT/KR2024/015883
Other languages
English (en)
Korean (ko)
Inventor
백서영
이승민
박기원
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
Publication of WO2025150663A1 publication Critical patent/WO2025150663A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/06—Airborne or Satellite Networks

Definitions

  • a method for triggering a measurement report by a terminal in a wireless communication system and a device therefor are provided.
  • SL refers to a communication method that establishes a direct link between user equipment (UE) to directly exchange voice or data between terminals without going through a base station (BS).
  • UE user equipment
  • BS base station
  • SL is being considered as a solution to solve the burden on base stations due to rapidly increasing data traffic.
  • V2X vehicle-to-everything refers to a communication technology that exchanges information with other vehicles, pedestrians, and objects with built-in infrastructure through wired/wireless communication.
  • V2X can be divided into four types: V2V (vehicle-to-vehicle), V2I (vehicle-to-infrastructure), V2N (vehicle-to-network), and V2P (vehicle-to-pedestrian).
  • V2X communication can be provided through the PC5 interface and/or the Uu interface.
  • V2X messages may include location information, dynamic information, attribute information, etc.
  • a terminal may transmit a CAM of a periodic message type and/or a DENM of an event triggered message type to another terminal.
  • CAM may include basic vehicle information such as vehicle dynamic status information such as direction and speed, vehicle static data such as dimensions, exterior lighting status, and route history.
  • the terminal may broadcast CAM, and the latency of the CAM may be less than 100ms.
  • the terminal may generate DENM and transmit it to other terminals.
  • all vehicles within the transmission range of the terminal may receive CAM and/or DENM.
  • DENM may have a higher priority than CAM.
  • vehicles can dynamically form a group and move together. For example, in order to perform platoon operations based on vehicle platooning, vehicles belonging to the group can receive periodic data from the lead vehicle. For example, vehicles belonging to the group can use the periodic data to reduce or increase the gap between vehicles.
  • the vehicles can be semi-autonomous or fully automated.
  • each vehicle can adjust its trajectories or maneuvers based on data acquired from local sensors of nearby vehicles and/or nearby logical entities.
  • each vehicle can share driving intentions with nearby vehicles.
  • raw data or processed data, or live video data acquired through local sensors can be exchanged between vehicles, logical entities, pedestrian terminals, and/or V2X application servers.
  • the vehicle can perceive the environment better than it can perceive using its own sensors.
  • a remote driver or V2X application can operate or control the remote vehicle.
  • cloud computing-based driving can be used to operate or control the remote vehicle.
  • access to a cloud-based back-end service platform can be considered for remote driving.
  • the measurement report is characterized in that it is triggered based on the response message not being received.
  • communication in a wireless communication system can be performed more accurately and efficiently.
  • Figure 1 is a diagram for explaining and comparing V2X communication based on RAT before NR and V2X communication based on NR.
  • FIG. 6 illustrates a communication structure that can be provided in a 6G system according to one embodiment of the present disclosure.
  • Figure 9 shows a terminal performing V2X or SL communication.
  • Figure 21 is a diagram for explaining a method for triggering a measurement report by a first UE.
  • Figure 23 illustrates a communication system applied to the present invention.
  • Fig. 25 shows another example of a wireless device applied to the present invention.
  • the wireless device can be implemented in various forms depending on the use-example/service.
  • the NG-RAN may include a gNB and/or an eNB that provides user plane and control plane protocol termination to the UE.
  • FIG. 7 illustrates a case where only a gNB is included.
  • the gNB and the eNB are connected to each other via an Xn interface.
  • the gNB and the eNB are connected to a 5th generation core network (5G Core Network: 5GC) via an NG interface. More specifically, they are connected to an access and mobility management function (AMF) via an NG-C interface, and to a user plane function (UPF) via an NG-U interface.
  • AMF access and mobility management function
  • UPF user plane function
  • a carrier includes a plurality of subcarriers in the frequency domain.
  • An RB Resource Block
  • An RB Resource Block
  • a BWP Bandwidth Part
  • P Physical Resource Block
  • a carrier can include at most N (for example, 5) BWPs.
  • Data communication can be performed through activated BWPs.
  • Each element can be referred to as a Resource Element (RE) in the resource grid, and one complex symbol can be mapped.
  • RE Resource Element
  • AI Artificial Intelligence: Introducing AI into communications can simplify and improve real-time data transmission. AI can use a lot of analytics to determine how complex target tasks are performed. In other words, AI can increase efficiency and reduce processing delays. Time-consuming tasks such as handover, network selection, and resource scheduling can be performed instantly using AI. AI can also play a significant role in M2M, machine-to-human, and human-to-machine communications. AI can also be a rapid communication in Brain Computer Interface (BCI). AI-based communication systems can be supported by metamaterials, intelligent structures, intelligent networks, intelligent devices, intelligent cognitive radios, self-sustaining wireless networks, and machine learning.
  • BCI Brain Computer Interface
  • FIG. 7 illustrates an electromagnetic spectrum according to an embodiment of the present disclosure.
  • the embodiment of FIG. 7 can be combined with various embodiments of the present disclosure.
  • Key characteristics of THz communications include (i) widely available bandwidth to support very high data rates, and (ii) high path loss at high frequencies (highly directional antennas are indispensable).
  • the narrow beam width generated by the highly directional antenna reduces interference.
  • the small wavelength of THz signals allows a much larger number of antenna elements to be integrated into devices and BSs operating in this band. This enables the use of advanced adaptive array techniques to overcome range limitations.
  • FSO backhaul network Free space optical transmission backhaul network
  • UAVs or drones will be a crucial element in 6G wireless communications.
  • high-speed data wireless connectivity can be provided using UAV technology.
  • the base station (BS) entity can be installed on the UAV to provide cellular connectivity.
  • UAVs may have certain features not found in fixed BS infrastructure such as easy deployment, robust line-of-sight links, and freedom of movement with controlled mobility.
  • BS base station
  • UAVs may have certain features not found in fixed BS infrastructure such as easy deployment, robust line-of-sight links, and freedom of movement with controlled mobility.
  • UAVs can easily handle such situations.
  • UAVs will be a new paradigm in wireless communications. This technology facilitates three basic requirements of wireless networks namely eMBB, URLLC, and mMTC.
  • UAVs can also support several purposes such as enhancing network connectivity, fire detection, disaster emergency services, security and surveillance, pollution monitoring, parking monitoring, and
  • Fig. 8 shows a radio protocol architecture for SL communication. Specifically, Fig. 8 (a) shows a user plane protocol stack of NR, and Fig. 8 (b) shows a control plane protocol stack of NR.
  • the PSBCH may be mapped to the first symbol in the S-SSB transmitted by the transmitting terminal.
  • the receiving terminal receiving the S-SSB may perform an AGC (Automatic Gain Control) operation in the first symbol section of the S-SSB.
  • AGC Automatic Gain Control
  • Figure 10 shows resource units for V2X or SL communication.
  • Resource pools can be subdivided into several types. For example, depending on the content of the SL signal transmitted from each resource pool, resource pools can be divided as follows.
  • the discovery channel may be a resource pool for transmitting terminals to transmit information such as their IDs. Through this, the transmitting terminals can enable adjacent terminals to discover themselves.
  • FIG. 11 illustrates an example of a BWP according to an embodiment of the present disclosure.
  • the embodiment of FIG. 11 can be combined with various embodiments of the present disclosure. In the embodiment of FIG. 11, it is assumed that there are three BWPs.
  • PSBCH Physical Sidelink Broadcast Channel
  • PSBCH Physical Sidelink Broadcast Channel
  • the basic information may be information related to SLSS, duplex mode (DM), TDD UL/DL (Time Division Duplex Uplink/Downlink) configuration, resource pool related information, type of application related to SLSS, subframe offset, broadcast information, etc.
  • the payload size of PSBCH may be 56 bits including a 24-bit CRC (Cyclic Redundancy Check).
  • S-PSS, S-SSS and PSBCH may be included in a block format supporting periodic transmission (e.g., SL SS (Synchronization Signal)/PSBCH block, hereinafter referred to as S-SSB (Sidelink-Synchronization Signal Block)).
  • the S-SSB may have the same numerology (i.e., SCS and CP length) as the PSCCH (Physical Sidelink Control Channel)/PSSCH (Physical Sidelink Shared Channel) in a carrier, and a transmission bandwidth may be within a (pre-)configured SL BWP (Sidelink BWP).
  • the bandwidth of the S-SSB may be 11 RB (Resource Block).
  • the PSBCH may span 11 RBs.
  • the frequency location of the S-SSB may be (pre-)configured. Therefore, the terminal does not need to perform hypothesis detection in frequency to discover the S-SSB in the carrier.
  • the base station can schedule SL resources to be used by the terminal for SL transmission.
  • the base station can transmit information related to SL resources and/or information related to UL resources to the first terminal.
  • the UL resources can include PUCCH resources and/or PUSCH resources.
  • the UL resources can be resources for reporting SL HARQ feedback to the base station.
  • a first terminal that has selected a resource by itself within a resource pool can transmit a PSCCH (e.g., SCI (Sidelink Control Information) or 1st-stage SCI) to a second terminal using the resource.
  • a PSCCH e.g., SCI (Sidelink Control Information) or 1st-stage SCI
  • the first terminal can transmit a PSSCH (e.g., 2nd-stage SCI, MAC PDU, data, etc.) related to the PSCCH to the second terminal.
  • the first terminal can receive a PSFCH related to the PSCCH/PSSCH from the second terminal.
  • the SCI transmitted on the PSCCH may be referred to as a 1st SCI, a 1st SCI, a 1st-stage SCI, or a 1st-stage SCI format
  • the SCI transmitted on the PSSCH may be referred to as a 2nd SCI, a 2nd SCI, a 2nd-stage SCI, or a 2nd-stage SCI format.
  • the first terminal may transmit SL HARQ feedback to the base station through PUCCH and/or PUSCH.
  • the PC5-RRC aspect PC5 unicast link establishment procedure of Rel-16 NR V2X can be reused to establish a secure unicast link for layer 2 UE-to-Network relaying (L2 U2N relay) between the remote UE and the relay UE before the remote UE establishes a Uu RRC connection with the network via the relay UE.
  • L2 U2N relay layer 2 UE-to-Network relaying
  • the PC5 L2 configuration for transmission between the remote UE and the U2N relay UE can be based on the RLC/MAC configuration defined in the standard.
  • the establishment of Uu SRB1/SRB2 and DRB of the remote UE follows the legacy Uu configuration procedure for L2 U2N relay.
  • a given scenario (TS 38.300) describes the control plane procedures for L2 U2N relays as follows:
  • step S1304 the gNB and the relay UE perform a relay channel setup procedure via Uu.
  • the relay/remote UE sets up an RLC channel to relay SRB1 to the remote UE via PC5. This step prepares a relay channel for SRB1.
  • step S1310 the gNB sets up an additional RLC channel between the gNB and the relay UE for traffic relay.
  • the relay/remote UE sets up an additional RLC channel between the remote UE and the relay UE for traffic relay.
  • UAVs with UICC and UAVs without UICC can be supported.
  • UAVs without UICC can perform U2X communication only if they are approved as “Not provided in E-UTRA” and “Not provided in NR”.
  • a non-roaming 5G system architecture for U2X communication via PC5 can be configured as illustrated in FIG. 14.
  • the non-roaming 5G system architecture for U2X communication via PC5 can be applied with the reference point of TS 23.287, and may have the following differences.
  • this reference point may/may not be specified in the release of a given scenario.
  • N1 In addition to the relevant functions defined in TS 23.501 for N1, it can also be used to convey U2X policies and parameters (including service authorization) from AMF to UE for U2X services, and PC5 functions for U2X capabilities and U2X information from UE to AMF.
  • U2X policies and parameters including service authorization
  • PC5 functions for U2X capabilities and U2X information from UE to AMF.
  • N2 In addition to the relevant functions defined in TS 23.501 for N2, it can also be used to convey U2X policies and parameters (including service authorization) from AMF to NG-RAN for U2X services.
  • UAV UEs leveraging Uu connectivity can use U2X for BRID and DAA and can be configured over U2X1 for transmissions outside the scope of 3GPP.
  • UAV UEs without leveraging Uu capabilities can be part of the 3GPP ecosystem as they use U2X1 for configuration by U2X application server and implement PC5 connectivity as specified by 3GPP.
  • FIGS. 15 and 16 A roaming 5G system architecture for U2X communications over PC5 can be configured as illustrated in FIGS. 15 and 16. Specifically, FIG. 15 illustrates a roaming 5G system architecture for U2X communications over PC5 in a local breakout scenario, and FIG. 16 illustrates a roaming 5G system architecture for U2X communications over PC5 in a home routing scenario.
  • PC5 parameters need to be set in a consistent manner between UEs within a specific area.
  • inter-PLMN PC5 may be similar to that defined in the non-roaming 5G system architecture for U2X communication over PC5 described with reference to Fig. 14.
  • AF-based service parameter provisioning for U2X communication can be defined as follows.
  • the message content for BRID can be defined according to regional regulations for BRID (e.g. message sets of ASTM F3411.19 or ASD-STAN prEN 4709-002 P1) and optionally according to regional means in compliance documents.
  • TS 23.287 The procedures and mechanisms of TS 23.287 can be applied to U2X scenarios. Specifically, the procedure for broadcasting over PC5 for DAA collision resolution can be performed as shown in Fig. 18. Meanwhile, the procedure for broadcasting over PC5 for DAA collision resolution can be assumed that the UAV is provisioned with a U2X policy including a DAA collision resolution policy (e.g., unicast or broadcast communication for collision resolution, communication frequency).
  • a DAA collision resolution policy e.g., unicast or broadcast communication for collision resolution, communication frequency.
  • UAV1 may receive a broadcast message from UAV2, which may include application layer DAA payload (e.g., CAA level UAV ID, USS address of UAV2, speed, heading, position, etc.).
  • application layer DAA payload e.g., CAA level UAV ID, USS address of UAV2, speed, heading, position, etc.
  • deconfliction request message may include DAA capability, which is part of U2X capability and indicates whether the UAV is able to engage in communication for deconflicting protocol, DAA deconflicting policy (broadcast based, deconflicting message frequency), collision detection alert, its CAA-level UAV IDs and the one(s) from other detected conflicting UAV(s), and deconflicting specific parameters (e.g. trajectory correction information to avoid collision))
  • Parameters can be pre-configured in the UE, or provisioned or updated by signaling via the N1 reference point in the PCF of the HPLMN, or via the U2X1 reference point from the U2X application server, if within the scope of application. 2.
  • AMF In addition to the functions defined in the given scenario (TS 23.501), AMF can perform the following functions: - Subscription information related to U2X can be obtained from UDM and stored as part of UE context data. - You can select a PCF that supports U2X policy/parameter provisioning and report PC5 capabilities for U2X to the selected PCF. - PC5 QoS information related to U2X can be obtained from PCF and stored as part of UE context data.
  • the U2X AS can provide parameters for U2X communication via PC5 and Uu reference point to 5GC and UAV UE (possibly via UAVC).
  • UDR In addition to the functions defined in the given scenario (TS 23.501), UDR can store U2X service parameters.
  • NRF In addition to the capabilities defined in the given scenario (TS 23.501), NRF can perform PCF discovery taking U2X capabilities into account.
  • NEF For U2X AS, NEF can support U2X service parameters.
  • - Rel-18 NR can support height, position and velocity reporting of UAV UE. What accuracy and reporting mechanisms are required and whether further improvements are needed can be further discussed.
  • Flight path planning reporting is introduced, similar to LTE.
  • the list of positions of waypoints (3D position information) and timestamps are adopted as the basic contents of flight path reporting. Whether timestamps are mandatory or optional in NR is FFS. Whether further improvements are needed is FFS.
  • FFS Whether numberoftriggerbeams is needed for NR or other improvements.
  • FFS How to avoid sending measurement reports mainly due to reportOnLeave.
  • a waypoint is a planned location for a UE along a flight path and is described via the existing parameter type LocationCoordinates defined in a given scenario (TS 37.355).
  • the UE can indicate whether flight plan information is available within the RRCReconfigurationComplete, RRCReestablishmentComplete, RRCResumeComplete or RRCSetupComplete messages. Flight path reporting can be used as a basis for the UE information request/response procedure.
  • the UE can instruct the network that a new flight path is available for use by the UE (whether it is initial or update).
  • the normal request/response procedure for flight path reporting can then be reused.
  • the Number of triggering cells mechanism is extended and does not apply to inter-RAT scenarios (i.e. event B1 and B2 triggering).
  • no UE in the cluster in the third time interval (time-3), no UE in the cluster can maintain a signal quality higher than a specific threshold with cell A.
  • another UE in the cluster is determined as the leader UE, and the leader UE can perform HO to another cell.
  • Such an action can effectively reduce the number of HOs when the size of the cluster is larger than the range in which the signal value above the threshold (RSRP) is measured for one specific cell (e.g., the line area indicated as Cell A, Cell B, and Cell C in FIG. 20).
  • RSRP signal value above the threshold
  • a new leader UE (e.g., a UE that has transmitted or responded to a previous leader UE) through the above-described method can access the gNB using a virtual C-RNTI representing the cluster or group.
  • the gNB may not be aware that a leader UE has changed within the corresponding cluster or group.
  • the previous leader UE no longer directly communicates with the gNB without releasing to the gNB (or without an RRC release procedure with the gNB), and can transmit/receive data through the new leader UE (i.e., relay communication through the new leader UE).
  • the gNB can determine whether to perform HO only based on what the leader UE reports.
  • a leader UE may collect messages/data received by individual UEs (or may collect them with a surrounding UE that can process them), integrate them, and then the leader UE (/UE that processed the integrated information) may transmit the integrated message/data to the individual UE, thereby improving the quality of the message/data.
  • This operation may be more suitable for a specific cast type (broadcast/unicast/groupcast) method.
  • this operation may be suitable for a broadcast or group cast method.
  • relay UE or leader UE in the above-described proposed method can be extended to gNB, IAB-node, etc.
  • the proposed method can prevent frequent handovers from being performed due to the distribution characteristics of RSRP above a certain height.
  • the proposed method can guarantee the stability of the communication link of UEs located above a certain height to the maximum extent by preventing frequent handovers.
  • the proposed method can maintain communication with the group or cluster without a separate direct link release procedure even when the leader UE changes through the formation of a direct link based on a virtual C-RNTI for the group or cluster.
  • the first UE may be a relay UE that has a direct link formed that is directly connected to a base station or a gNB, and an indirect link formed for connecting at least one UE and the base station.
  • the at least one UE may be a remote UE that is connected to the base station through the indirect link with the first UE.
  • the first UE and the at least one UE may be an Unmanned Aerial Vehicle (UAV) that may be located at a predetermined height or higher, or a UE included in the UAV.
  • UAV Unmanned Aerial Vehicle
  • the first UE and the at least one UE may be UEs that form a cluster or group at a predetermined height or higher and drive in a cluster.
  • the first UE may transmit a message requesting transmission of a response message related to the signal quality of the base station to the at least one UE when the signal strength of the direct link is below a specific threshold (S215).
  • the first UE may trigger a measurement report related to the handover procedure when the signal strength or signal quality of the direct link is below a specific threshold, but the measurement report may not be triggered immediately when the first UE forms a cluster or group with the at least one UE and is located at a specific altitude or higher (e.g., 100 m, 200 m, or 300 m).
  • the first UE may not immediately trigger the measurement report even when the signal strength or signal quality of the direct link is below a specific threshold, but may transmit a message (or a request message) requesting transmission of a response message to the at least one UE included in its cluster or group based on the signal quality of the base station and whether a specific condition is satisfied.
  • the first UE may transmit the request message to the at least one UE, and receive the response message only from a specific UE among the at least one UE whose signal quality with the base station is at a specific threshold.
  • the specific condition may be satisfied when the signal quality with the base station is at least the specific threshold or a first specific threshold set separately (which may be included in the message or set in advance as a threshold value higher than the specific threshold).
  • the first UE may determine whether to trigger a measurement report based on whether the response message is received (S217). For example, if the first UE receives the response message from a specific UE that satisfies the specific condition among the at least one UE, the first UE may not trigger the measurement report. In this case, the first UE may request the specific UE to perform the role of a leader UE of the cluster or group and to form a direct link with the base station. At this time, the specific UE may form the direct link and an indirect link connected between the UEs in the group or cluster and the base station, and the first UE may also be connected to the base station through the specific UE.
  • the first UE may trigger the measurement report and report measurement information about the signal strength (or signal quality) measured for the direct link and/or the signal strength (or signal quality) measured for a neighboring cell to the base station.
  • the base station may perform a handover procedure targeting the neighboring cell based on the reporting of the measurement information to the first UE.
  • the response message may include information about the signal strength for the base station, the amount of change in the signal strength (or the amount of change in the average value of the signal strength), the location, moving speed, direction, remaining power, capability and/or load of the UE.
  • Figure 22 is a diagram for explaining how a second UE performs communication.
  • the second UE can transmit a response message responding to the request message if the signal quality measured for the base station satisfies a specific condition (S225).
  • the specific condition can be satisfied if the signal quality of the base station is higher than the specific threshold or a first specific threshold set separately (which can be included in the message or preset as a threshold value higher than the specific threshold).
  • the second UE can determine whether to transmit the response message responding to the request message based on whether the signal quality measured for the base station satisfies the specific condition.
  • the second UE can transmit the response message if the signal quality satisfies the specific condition, and not transmit the response message if the signal quality does not satisfy the specific condition.
  • the second UE may measure signal quality (e.g., signal quality associated with a direct link) for the base station when receiving the request message.
  • the second UE may transmit a response message in response to the request message when the signal quality is above a certain threshold.
  • the second UE may not transmit a response message in response to the request message when the signal quality is below the certain threshold.
  • the response message may include information about the signal strength for the base station, the change in the signal strength (or the change in the average value of the signal strength), the location, moving speed, direction, remaining power, capability and/or load of the UE.
  • the proposed method can prevent frequent handovers from being performed due to the distribution characteristics of RSRP above a certain height.
  • the proposed method can guarantee the stability of the communication link of UEs located above a certain height to the maximum extent by preventing frequent handovers.
  • the proposed method can maintain communication with the group or cluster without a separate direct link release procedure even if the leader UE changes through the formation of a direct link based on a virtual C-RNTI for the group or cluster.
  • Figure 23 illustrates a communication system applied to the present invention.
  • a communication system (1) applied to the present invention includes a wireless device, a base station, and a network.
  • the wireless device means a device that performs communication using a wireless access technology (e.g., 5G NR (New RAT), LTE (Long Term Evolution)) and may be referred to as a communication/wireless/5G device.
  • the wireless device may include a robot (100a), a vehicle (100b-1, 100b-2), an XR (eXtended Reality) device (100c), a hand-held device (100d), a home appliance (100e), an IoT (Internet of Thing) device (100f), and an AI device/server (400).
  • the vehicle may include a vehicle equipped with a wireless communication function, an autonomous vehicle, a vehicle capable of performing vehicle-to-vehicle communication, etc.
  • the vehicle may include an Unmanned Aerial Vehicle (UAV) (e.g., a drone).
  • UAV Unmanned Aerial Vehicle
  • XR devices include AR (Augmented Reality)/VR (Virtual Reality)/MR (Mixed Reality) devices and can be implemented in the form of HMD (Head-Mounted Device), HUD (Head-Up Display) installed in a vehicle, television, smartphone, computer, wearable device, home appliance, digital signage, vehicle, robot, etc.
  • HMD Head-Mounted Device
  • HUD Head-Up Display
  • Portable devices can include smartphone, smart pad, wearable device (e.g., smart watch, smart glass), computer (e.g., laptop, etc.).
  • Home appliances can include TV, refrigerator, washing machine, etc.
  • IoT devices can include sensors, smart meters, etc.
  • base stations and networks can also be implemented as wireless devices, and a specific wireless device (200a) can act as a base station/network node to other wireless devices.
  • vehicles can communicate directly (e.g. V2V (Vehicle to Vehicle)/V2X (Vehicle to everything) communication).
  • IoT devices e.g., sensors
  • IoT devices can communicate directly with other IoT devices (e.g., sensors) or other wireless devices (100a to 100f).
  • Wireless communication/connection can be established between wireless devices (100a to 100f)/base stations (200), and base stations (200)/base stations (200).
  • the wireless communication/connection can be achieved through various wireless access technologies (e.g., 5G NR) such as uplink/downlink communication (150a), sidelink communication (150b) (or, D2D communication), and communication between base stations (150c) (e.g., relay, IAB (Integrated Access Backhaul).
  • 5G NR wireless access technologies
  • a wireless device and a base station/wireless device, and a base station and a base station can transmit/receive wireless signals to/from each other.
  • the wireless communication/connection can transmit/receive signals through various physical channels.
  • various configuration information setting processes for transmitting/receiving wireless signals various signal processing processes (e.g., channel encoding/decoding, modulation/demodulation, resource mapping/demapping, etc.), and resource allocation processes can be performed based on various proposals of the present invention.
  • Figure 24 illustrates a wireless device that can be applied to the present invention.
  • the first wireless device (100) and the second wireless device (200) can transmit and receive wireless signals through various wireless access technologies (e.g., LTE, NR).
  • ⁇ the first wireless device (100), the second wireless device (200) ⁇ can correspond to ⁇ the wireless device (100x), the base station (200) ⁇ and/or ⁇ the wireless device (100x), the wireless device (100x) ⁇ of FIG. 23.
  • a first wireless device (100) includes one or more processors (102) and one or more memories (104), and may additionally include one or more transceivers (106) and/or one or more antennas (108).
  • the processor (102) controls the memory (104) and/or the transceiver (106), and may be configured to implement the descriptions, functions, procedures, suggestions, methods, and/or operational flowcharts disclosed in this document.
  • the processor (102) may process information in the memory (104) to generate first information/signal, and then transmit a wireless signal including the first information/signal via the transceiver (106).
  • the processor (102) may receive a wireless signal including second information/signal via the transceiver (106), and then store information obtained from signal processing of the second information/signal in the memory (104).
  • the memory (104) may be connected to the processor (102) and may store various information related to the operation of the processor (102). For example, the memory (104) may perform some or all of the processes controlled by the processor (102), or may store software codes including instructions for performing the descriptions, functions, procedures, proposals, methods, and/or operational flowcharts disclosed in this document.
  • the processor (102) and the memory (104) may be part of a communication modem/circuit/chipset designed to implement wireless communication technology (e.g., LTE, NR).
  • the transceiver (106) may be connected to the processor (102) and may transmit and/or receive wireless signals via one or more antennas (108).
  • the transceiver (106) may include a transmitter and/or a receiver.
  • the transceiver (106) may be used interchangeably with an RF (Radio Frequency) unit.
  • a wireless device may also mean a communication modem/circuit/chipset.
  • the first wireless device or first UE (100) may include a processor (102) and a memory (104) coupled to a transceiver (106).
  • the memory (104) may include at least one program capable of performing operations related to the embodiments described in FIGS. 19 to 22.
  • the processor (102) controls the transceiver (106) to form a direct link directly connected to a base station, and to form at least one indirect link for connecting at least one UE (User Equipment) and the base station, and transmits a message requesting transmission of a response message related to signal quality for the base station to the at least one UE based on whether a signal strength of the direct link is below a specific threshold, and determines whether to trigger a measurement report based on whether the response message is received.
  • UE User Equipment
  • the second wireless device (200) includes one or more processors (202), one or more memories (204), and may additionally include one or more transceivers (206) and/or one or more antennas (208).
  • the processor (202) may be configured to control the memories (204) and/or the transceivers (206), and implement the descriptions, functions, procedures, suggestions, methods, and/or operational flowcharts disclosed in this document. For example, the processor (202) may process information in the memory (204) to generate third information/signals, and then transmit a wireless signal including the third information/signals via the transceivers (206). Additionally, the processor (202) may receive a wireless signal including fourth information/signals via the transceivers (206), and then store information obtained from signal processing of the fourth information/signals in the memory (204).
  • the processor (202) controls the transceiver (206) to form an indirect link connected to a base station through a first UE (User Equipment), receive a request message requesting transmission of a response message related to signal quality for the base station from the first UE, transmit the response message to the first UE based on the measured signal quality for the base station satisfying a specific condition, and perform a procedure for forming a direct link with the base station.
  • UE User Equipment
  • One or more processors (102, 202) can receive signals (e.g., baseband signals) from one or more transceivers (106, 206) and obtain PDUs, SDUs, messages, control information, data or information according to the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed herein.
  • signals e.g., baseband signals
  • the one or more processors (102, 202) may be referred to as a controller, a microcontroller, a microprocessor, or a microcomputer.
  • the one or more processors (102, 202) may be implemented by hardware, firmware, software, or a combination thereof.
  • ASICs Application Specific Integrated Circuits
  • DSPs Digital Signal Processors
  • DSPDs Digital Signal Processing Devices
  • PLDs Programmable Logic Devices
  • FPGAs Field Programmable Gate Arrays
  • One or more memories (104, 204) may be coupled to one or more processors (102, 202) and may store various forms of data, signals, messages, information, programs, codes, instructions and/or commands.
  • the one or more memories (104, 204) may be comprised of ROM, RAM, EPROM, flash memory, hard drives, registers, cache memory, computer readable storage media and/or combinations thereof.
  • the one or more memories (104, 204) may be located internally and/or externally to the one or more processors (102, 202). Additionally, the one or more memories (104, 204) may be coupled to the one or more processors (102, 202) via various technologies, such as wired or wireless connections.
  • One or more transceivers (106, 206) can transmit user data, control information, wireless signals/channels, etc., as described in the methods and/or flowcharts of this document, to one or more other devices.
  • One or more transceivers (106, 206) can receive user data, control information, wireless signals/channels, etc., as described in the descriptions, functions, procedures, suggestions, methods and/or flowcharts of this document, from one or more other devices.
  • one or more transceivers (106, 206) can be coupled to one or more processors (102, 202) and can transmit and receive wireless signals.
  • one or more processors (102, 202) can control one or more transceivers (106, 206) to transmit user data, control information, or wireless signals to one or more other devices. Additionally, one or more processors (102, 202) may control one or more transceivers (106, 206) to receive user data, control information, or wireless signals from one or more other devices. Additionally, one or more transceivers (106, 206) may be coupled to one or more antennas (108, 208), and one or more transceivers (106, 206) may be configured to transmit and receive user data, control information, wireless signals/channels, and the like, as described in the descriptions, functions, procedures, proposals, methods, and/or operational flowcharts disclosed herein, via one or more antennas (108, 208).
  • Fig. 25 shows another example of a wireless device applied to the present invention.
  • the wireless device can be implemented in various forms depending on the use-example/service (see Fig. 23).
  • the wireless device (100, 200) corresponds to the wireless device (100, 200) of FIG. 24 and may be composed of various elements, components, units/units, and/or modules.
  • the wireless device (100, 200) may include a communication unit (110), a control unit (120), a memory unit (130), and an additional element (140).
  • the communication unit may include a communication circuit (112) and a transceiver(s) (114).
  • the communication circuit (112) may include one or more processors (102, 202) and/or one or more memories (104, 204) of FIG. 25.
  • the transceiver(s) (114) may include one or more transceivers (106, 206) and/or one or more antennas (108, 208) of FIG. 24.
  • the control unit (120) is electrically connected to the communication unit (110), the memory unit (130), and the additional elements (140) and controls overall operations of the wireless device.
  • the control unit (120) may control electrical/mechanical operations of the wireless device based on programs/codes/commands/information stored in the memory unit (130).
  • control unit (120) may transmit information stored in the memory unit (130) to an external device (e.g., another communication device) via a wireless/wired interface through the communication unit (110), or store information received from an external device (e.g., another communication device) via a wireless/wired interface in the memory unit (130).
  • the additional element (140) may be configured in various ways depending on the type of the wireless device.
  • the additional element (140) may include at least one of a power unit/battery, an input/output unit (I/O unit), a driving unit, and a computing unit.
  • the wireless device may be implemented in the form of a robot (FIG. 23, 100a), a vehicle (FIG. 23, 100b-1, 100b-2), an XR device (FIG. 23, 100c), a portable device (FIG. 23, 100d), a home appliance (FIG. 23, 100e), an IoT device (FIG.
  • Wireless devices may be mobile or stationary, depending on the use/service.
  • various elements, components, units/parts, and/or modules within the wireless device (100, 200) may be entirely interconnected via a wired interface, or at least some may be wirelessly connected via a communication unit (110).
  • the control unit (120) and the communication unit (110) may be wired, and the control unit (120) and the first unit (e.g., 130, 140) may be wirelessly connected via the communication unit (110).
  • each element, component, unit/part, and/or module within the wireless device (100, 200) may further include one or more elements.
  • the control unit (120) may be composed of one or more processor sets.
  • control unit (120) may be composed of a set of a communication control processor, an application processor, an electronic control unit (ECU), a graphic processing processor, a memory control processor, etc.
  • memory unit (130) may be composed of RAM (Random Access Memory), DRAM (Dynamic RAM), ROM (Read Only Memory), flash memory, volatile memory, non-volatile memory, and/or a combination thereof.
  • LTE-M technology may be an example of LPWAN technology, and may be called by various names such as eMTC (enhanced Machine Type Communication).
  • the LTE-M technology can be implemented by at least one of various standards such as 1) LTE CAT 0, 2) LTE Cat M1, 3) LTE Cat M2, 4) LTE non-BL (non-Bandwidth Limited), 5) LTE-MTC, 6) LTE Machine Type Communication, and/or 7) LTE M, and is not limited to the above-described names.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention divulgue un procédé et un dispositif de déclenchement d'un rapport de mesure par un premier équipement d'utilisateur (UE) dans un système de communication sans fil selon divers modes de réalisation. Dans ce but sont divulgués un procédé et un dispositif ; le procédé comprenant les étapes consistant à : former une liaison directe pour une connexion directe à une station de base ; former au moins une liaison indirecte connectant au moins un UE et la station de base par le biais d'un premier UE ; sur la base du fait que l'intensité de signal de la liaison directe est inférieure à un seuil spécifique, transmettre, à l'UE ou aux UE, un message demandant de transmettre un message de réponse relatif à la qualité de signal concernant la station de base ; et déterminer s'il faut déclencher un rapport de mesure selon que le message de réponse est reçu ou non.
PCT/KR2024/015883 2024-01-12 2024-10-18 Procédé et dispositif de réalisation de communications par un terminal dans un système de communication sans fil Pending WO2025150663A1 (fr)

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US20180227821A1 (en) * 2017-02-08 2018-08-09 Industrial Technology Research Institute Connection management method for mobile device group
WO2020190065A1 (fr) * 2019-03-21 2020-09-24 엘지전자 주식회사 Procédé et dispositif permettant de déclencher une mesure/un rapport des informations d'état de canal de liaison latérale apériodiques sur la base d'un résultat de retransmission dans un système de communication sans fil
US20210134165A1 (en) * 2016-09-27 2021-05-06 Sony Corporation Circuit, base station, method, and recording medium
KR102356027B1 (ko) * 2017-03-24 2022-01-26 삼성전자 주식회사 제1 무선접속기술과 제2 무선접속기술을 통해 데이터를 송수신하는 단말이 측정 결과를 보고하는 방법 및 장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140073549A (ko) * 2011-09-30 2014-06-16 인터디지탈 패튼 홀딩스, 인크 관리형 원격 접근을 가능하게 하는 방법, 장치 및 시스템
US20210134165A1 (en) * 2016-09-27 2021-05-06 Sony Corporation Circuit, base station, method, and recording medium
US20180227821A1 (en) * 2017-02-08 2018-08-09 Industrial Technology Research Institute Connection management method for mobile device group
KR102356027B1 (ko) * 2017-03-24 2022-01-26 삼성전자 주식회사 제1 무선접속기술과 제2 무선접속기술을 통해 데이터를 송수신하는 단말이 측정 결과를 보고하는 방법 및 장치
WO2020190065A1 (fr) * 2019-03-21 2020-09-24 엘지전자 주식회사 Procédé et dispositif permettant de déclencher une mesure/un rapport des informations d'état de canal de liaison latérale apériodiques sur la base d'un résultat de retransmission dans un système de communication sans fil

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