WO2022085975A1 - Procédé et appareil permettant d'effectuer une mesure dans un état désactivé ou dans un état dormant dans un système de communication sans fil - Google Patents

Procédé et appareil permettant d'effectuer une mesure dans un état désactivé ou dans un état dormant dans un système de communication sans fil Download PDF

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Publication number
WO2022085975A1
WO2022085975A1 PCT/KR2021/013310 KR2021013310W WO2022085975A1 WO 2022085975 A1 WO2022085975 A1 WO 2022085975A1 KR 2021013310 W KR2021013310 W KR 2021013310W WO 2022085975 A1 WO2022085975 A1 WO 2022085975A1
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WIPO (PCT)
Prior art keywords
measurement
wireless device
specific state
measurement object
cell group
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PCT/KR2021/013310
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English (en)
Inventor
Sangwon Kim
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Lg Electronics Inc.
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Publication date
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Priority to KR1020237010156A priority Critical patent/KR20230091864A/ko
Priority to EP21883047.9A priority patent/EP4233399A1/fr
Publication of WO2022085975A1 publication Critical patent/WO2022085975A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0096—Indication of changes in allocation
    • H04L5/0098—Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H04W52/0274—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0457—Variable allocation of band or rate
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0026—Division using four or more dimensions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present disclosure relates to a method and apparatus for performing measurement in a deactivated state or a dormant state in a wireless communication system.
  • 3rd generation partnership project (3GPP) long-term evolution (LTE) is a technology for enabling high-speed packet communications.
  • 3GPP 3rd generation partnership project
  • LTE long-term evolution
  • Many schemes have been proposed for the LTE objective including those that aim to reduce user and provider costs, improve service quality, and expand and improve coverage and system capacity.
  • the 3GPP LTE requires reduced cost per bit, increased service availability, flexible use of a frequency band, a simple structure, an open interface, and adequate power consumption of a terminal as an upper-level requirement.
  • ITU international telecommunication union
  • NR new radio
  • 3GPP has to identify and develop the technology components needed for successfully standardizing the new RAT timely satisfying both the urgent market needs, and the more long-term requirements set forth by the ITU radio communication sector (ITU-R) international mobile telecommunications (IMT)-2020 process.
  • ITU-R ITU radio communication sector
  • IMT international mobile telecommunications
  • the NR should be able to use any spectrum band ranging at least up to 100 GHz that may be made available for wireless communications even in a more distant future.
  • the NR targets a single technical framework addressing all usage scenarios, requirements and deployment scenarios including enhanced mobile broadband (eMBB), massive machine-type-communications (mMTC), ultra-reliable and low latency communications (URLLC), etc.
  • eMBB enhanced mobile broadband
  • mMTC massive machine-type-communications
  • URLLC ultra-reliable and low latency communications
  • the NR shall be inherently forward compatible.
  • NR is a technology that operates on a very wideband compared with LTE.
  • NR In order to support flexible broadband operation, NR has the following design principles different from LTE in terms of broadband support.
  • the ability of the network and the user equipment (UE) to support the bandwidth may be different.
  • the bandwidth capabilities of the downlink and uplink supported by the UE may be different.
  • the capabilities of the bandwidths supported by each UE may differ, so that UEs supporting different bandwidths may coexist within one network frequency band.
  • the UE may be configured with different bandwidth depending on the traffic load state of the UE, etc.
  • NR newly introduced a concept of bandwidth part (BWP) in addition to carrier aggregation (CA) of existing LTE.
  • BWP bandwidth part
  • CA carrier aggregation
  • a new state may be supported in NR.
  • the UE may not perform the PDCCH monitoring for all cells belonging to the cell group for power saving. If UE keeps performing the measurements according to the configuration from a cell group while the cell group is in the new state (for example, the deactivated state or the dormant state), the UE may need to spend lots of power for the measurement. Then, it may decrease the gain of dormant cell group. On the contrary, if UE doesn't perform the measurement for the cell group in dormant state, the UE may keep the bad serving cell even after the serving cell quality becomes worse than a threshold.
  • the serving cell cannot be used for data reception/transmission, and it may cause that the UE cannot achieve the sufficient user throughput when the corresponding cell group becomes normal state from the new state (for example, a deactivated state or a dormant state).
  • a method performed by a wireless device in a wireless communication system receives, from a cell group, a measurement configuration including 1) at least one measurement object, and 2) an information informing whether to perform measurement on the at least one measurement object in a specific state.
  • a wireless device enters the specific state, wherein Physical Downlink Control Channel (PDCCH) monitoring is not performed for all cells belonging to the cell group while in the specific state.
  • PDCCH Physical Downlink Control Channel
  • a wireless device determines whether to perform measurement on the at least one measurement object in the specific state based on the received information.
  • an apparatus for implementing the above method is provided.
  • the present disclosure can have various advantageous effects.
  • a wireless device could minimize the power consumption for measurement in a new state (for example, a deactivated state or a dormant state).
  • a wireless device may efficiently perform measurement when a cell group becomes the dormant state, by determining whether to perform the measurement for the configured measurement object based on the measurement indication.
  • a wireless device may not perform measurement on all measurement objects in the new state and only perform measurement on a part of the measurement objects in the new state, the wireless device could reduce the power consumption for measurement in the new state.
  • a wireless communication system could efficiently support measurement in a new state (for example, a deactivated state or a dormant state).
  • a network may not need to re-configure the measurement object whenever the state of a cell group is changed to reduce the power consumption for measurements.
  • FIG. 1 shows an example of a communication system to which implementations of the present disclosure is applied.
  • FIG. 2 shows an example of wireless devices to which implementations of the present disclosure is applied.
  • FIG. 3 shows an example of a wireless device to which implementations of the present disclosure is applied.
  • FIG. 4 shows another example of wireless devices to which implementations of the present disclosure is applied.
  • FIG. 5 shows an example of UE to which implementations of the present disclosure is applied.
  • FIGS. 6 and 7 show an example of protocol stacks in a 3GPP based wireless communication system to which implementations of the present disclosure is applied.
  • FIG. 8 shows a frame structure in a 3GPP based wireless communication system to which implementations of the present disclosure is applied.
  • FIG. 9 shows a data flow example in the 3GPP NR system to which implementations of the present disclosure is applied.
  • FIG. 10 shows an example of bandwidth part (BWP) configurations to which implementations of the present disclosure is applied.
  • BWP bandwidth part
  • FIG. 11 shows an example of contiguous BWPs and non-contiguous BWPs to which implementations of the present disclosure is applied
  • FIG. 12 shows an example of multiple BWPs to which implementations of the present disclosure is applied.
  • FIG. 13 shows an example of a method for performing measurement in a deactivated state or a dormant state in a wireless communication system, according to some embodiments of the present disclosure.
  • FIG. 14 shows an example of a method for performing measurement in a deactivated state or a dormant state in a wireless communication system, according to some embodiments of the present disclosure.
  • CDMA code division multiple access
  • FDMA frequency division multiple access
  • TDMA time division multiple access
  • OFDMA orthogonal frequency division multiple access
  • SC-FDMA single carrier frequency division multiple access
  • MC-FDMA multicarrier frequency division multiple access
  • CDMA may be embodied through radio technology such as universal terrestrial radio access (UTRA) or CDMA2000.
  • TDMA may be embodied through radio technology such as global system for mobile communications (GSM), general packet radio service (GPRS), or enhanced data rates for GSM evolution (EDGE).
  • GSM global system for mobile communications
  • GPRS general packet radio service
  • EDGE enhanced data rates for GSM evolution
  • OFDMA may be embodied through radio technology such as institute of electrical and electronics engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, or evolved UTRA (E-UTRA).
  • IEEE institute of electrical and electronics engineers
  • Wi-Fi Wi-Fi
  • WiMAX IEEE 802.16
  • E-UTRA evolved UTRA
  • UTRA is a part of a universal mobile telecommunications system (UMTS).
  • 3rd generation partnership project (3GPP) long term evolution (LTE) is a part of evolved UMTS (E-UMTS) using E-UTRA.
  • 3GPP LTE employs OFDMA in DL and SC-FDMA in UL.
  • LTE-advanced (LTE-A) is an evolved version of 3GPP LTE.
  • implementations of the present disclosure are mainly described in regards to a 3GPP based wireless communication system.
  • the technical features of the present disclosure are not limited thereto.
  • the following detailed description is given based on a mobile communication system corresponding to a 3GPP based wireless communication system, aspects of the present disclosure that are not limited to 3GPP based wireless communication system are applicable to other mobile communication systems.
  • a or B may mean “only A”, “only B”, or “both A and B”.
  • a or B in the present disclosure may be interpreted as “A and/or B”.
  • A, B or C in the present disclosure may mean “only A”, “only B”, “only C”, or "any combination of A, B and C”.
  • slash (/) or comma (,) may mean “and/or”.
  • A/B may mean “A and/or B”.
  • A/B may mean "only A”, “only B”, or “both A and B”.
  • A, B, C may mean "A, B or C”.
  • At least one of A and B may mean “only A”, “only B” or “both A and B”.
  • the expression “at least one of A or B” or “at least one of A and/or B” in the present disclosure may be interpreted as same as “at least one of A and B”.
  • At least one of A, B and C may mean “only A”, “only B”, “only C”, or “any combination of A, B and C”.
  • 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”.
  • parentheses used in the present disclosure may mean “for example”.
  • control information PDCCH
  • PDCCH PDCCH
  • PDCCH PDCCH
  • FIG. 1 shows an example of a communication system to which implementations of the present disclosure is applied.
  • the 5G usage scenarios shown in FIG. 1 are only exemplary, and the technical features of the present disclosure can be applied to other 5G usage scenarios which are not shown in FIG. 1.
  • Three main requirement categories for 5G include (1) a category of enhanced mobile broadband (eMBB), (2) a category of massive machine type communication (mMTC), and (3) a category of ultra-reliable and low latency communications (URLLC).
  • eMBB enhanced mobile broadband
  • mMTC massive machine type communication
  • URLLC ultra-reliable and low latency communications
  • Partial use cases may require a plurality of categories for optimization and other use cases may focus only upon one key performance indicator (KPI).
  • KPI key performance indicator
  • eMBB far surpasses basic mobile Internet access and covers abundant bidirectional work and media and entertainment applications in cloud and augmented reality.
  • Data is one of 5G core motive forces and, in a 5G era, a dedicated voice service may not be provided for the first time.
  • voice will be simply processed as an application program using data connection provided by a communication system.
  • Main causes for increased traffic volume are due to an increase in the size of content and an increase in the number of applications requiring high data transmission rate.
  • a streaming service (of audio and video), conversational video, and mobile Internet access will be more widely used as more devices are connected to the Internet.
  • Cloud storage and applications are rapidly increasing in a mobile communication platform and may be applied to both work and entertainment.
  • the cloud storage is a special use case which accelerates growth of uplink data transmission rate.
  • 5G is also used for remote work of cloud. When a tactile interface is used, 5G demands much lower end-to-end latency to maintain user good experience.
  • Entertainment for example, cloud gaming and video streaming, is another core element which increases demand for mobile broadband capability. Entertainment is essential for a smartphone and a tablet in any place including high mobility environments such as a train, a vehicle, and an airplane.
  • Other use cases are augmented reality for entertainment and information search. In this case, the augmented reality requires very low latency and instantaneous data volume.
  • one of the most expected 5G use cases relates a function capable of smoothly connecting embedded sensors in all fields, i.e., mMTC. It is expected that the number of potential Internet-of-things (IoT) devices will reach 204 hundred million up to the year of 2020.
  • An industrial IoT is one of categories of performing a main role enabling a smart city, asset tracking, smart utility, agriculture, and security infrastructure through 5G.
  • URLLC includes a new service that will change industry through remote control of main infrastructure and an ultra-reliable/available low-latency link such as a self-driving vehicle.
  • a level of reliability and latency is essential to control a smart grid, automatize industry, achieve robotics, and control and adjust a drone.
  • 5G is a means of providing streaming evaluated as a few hundred megabits per second to gigabits per second and may complement fiber-to-the-home (FTTH) and cable-based broadband (or DOCSIS). Such fast speed is needed to deliver TV in resolution of 4K or more (6K, 8K, and more), as well as virtual reality and augmented reality.
  • Virtual reality (VR) and augmented reality (AR) applications include almost immersive sports games.
  • a specific application program may require a special network configuration. For example, for VR games, gaming companies need to incorporate a core server into an edge network server of a network operator in order to minimize latency.
  • Automotive is expected to be a new important motivated force in 5G together with many use cases for mobile communication for vehicles. For example, entertainment for passengers requires high simultaneous capacity and mobile broadband with high mobility. This is because future users continue to expect connection of high quality regardless of their locations and speeds.
  • Another use case of an automotive field is an AR dashboard.
  • the AR dashboard causes a driver to identify an object in the dark in addition to an object seen from a front window and displays a distance from the object and a movement of the object by overlapping information talking to the driver.
  • a wireless module enables communication between vehicles, information exchange between a vehicle and supporting infrastructure, and information exchange between a vehicle and other connected devices (e.g., devices accompanied by a pedestrian).
  • a safety system guides alternative courses of a behavior so that a driver may drive more safely drive, thereby lowering the danger of an accident.
  • the next stage will be a remotely controlled or self-driven vehicle. This requires very high reliability and very fast communication between different self-driven vehicles and between a vehicle and infrastructure. In the future, a self-driven vehicle will perform all driving activities and a driver will focus only upon abnormal traffic that the vehicle cannot identify.
  • Technical requirements of a self-driven vehicle demand ultra-low latency and ultra-high reliability so that traffic safety is increased to a level that cannot be achieved by human being.
  • a smart city and a smart home/building mentioned as a smart society will be embedded in a high-density wireless sensor network.
  • a distributed network of an intelligent sensor will identify conditions for costs and energy-efficient maintenance of a city or a home. Similar configurations may be performed for respective households. All of temperature sensors, window and heating controllers, burglar alarms, and home appliances are wirelessly connected. Many of these sensors are typically low in data transmission rate, power, and cost. However, real-time HD video may be demanded by a specific type of device to perform monitoring.
  • the smart grid collects information and connects the sensors to each other using digital information and communication technology so as to act according to the collected information. Since this information may include behaviors of a supply company and a consumer, the smart grid may improve distribution of fuels such as electricity by a method having efficiency, reliability, economic feasibility, production sustainability, and automation.
  • the smart grid may also be regarded as another sensor network having low latency.
  • Mission critical application is one of 5G use scenarios.
  • a health part contains many application programs capable of enjoying benefit of mobile communication.
  • a communication system may support remote treatment that provides clinical treatment in a faraway place. Remote treatment may aid in reducing a barrier against distance and improve access to medical services that cannot be continuously available in a faraway rural area. Remote treatment is also used to perform important treatment and save lives in an emergency situation.
  • the wireless sensor network based on mobile communication may provide remote monitoring and sensors for parameters such as heart rate and blood pressure.
  • Wireless and mobile communication gradually becomes important in the field of an industrial application.
  • Wiring is high in installation and maintenance cost. Therefore, a possibility of replacing a cable with reconstructible wireless links is an attractive opportunity in many industrial fields.
  • it is necessary for wireless connection to be established with latency, reliability, and capacity similar to those of the cable and management of wireless connection needs to be simplified. Low latency and a very low error probability are new requirements when connection to 5G is needed.
  • Logistics and freight tracking are important use cases for mobile communication that enables inventory and package tracking anywhere using a location-based information system.
  • the use cases of logistics and freight typically demand low data rate but require location information with a wide range and reliability.
  • the communication system 1 includes wireless devices 100a to 100f, base stations (BSs) 200, and a network 300.
  • FIG. 1 illustrates a 5G network as an example of the network of the communication system 1, the implementations of the present disclosure are not limited to the 5G system, and can be applied to the future communication system beyond the 5G system.
  • the BSs 200 and the network 300 may be implemented as wireless devices and a specific wireless device may operate as a BS/network node with respect to other wireless devices.
  • the wireless devices 100a to 100f represent devices performing communication using radio access technology (RAT) (e.g., 5G new RAT (NR)) or LTE) and may be referred to as communication/radio/5G devices.
  • RAT radio access technology
  • the wireless devices 100a to 100f may include, without being limited to, a robot 100a, vehicles 100b-1 and 100b-2, an extended reality (XR) device 100c, a hand-held device 100d, a home appliance 100e, an IoT device 100f, and an artificial intelligence (AI) device/server 400.
  • the vehicles may include a vehicle having a wireless communication function, an autonomous driving vehicle, and a vehicle capable of performing communication between vehicles.
  • the vehicles may include an unmanned aerial vehicle (UAV) (e.g., a drone).
  • UAV unmanned aerial vehicle
  • the XR device may include an AR/VR/Mixed Reality (MR) device and may be implemented in the form of a head-mounted device (HMD), a head-up display (HUD) mounted in a vehicle, a television, a smartphone, a computer, a wearable device, a home appliance device, a digital signage, a vehicle, a robot, etc.
  • the hand-held device may include a smartphone, a smartpad, a wearable device (e.g., a smartwatch or a smartglasses), and a computer (e.g., a notebook).
  • the home appliance may include a TV, a refrigerator, and a washing machine.
  • the IoT device may include a sensor and a smartmeter.
  • the wireless devices 100a to 100f may be called user equipments (UEs).
  • a UE may include, for example, a cellular phone, a smartphone, a laptop computer, a digital broadcast terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), a navigation system, a slate personal computer (PC), a tablet PC, an ultrabook, a vehicle, a vehicle having an autonomous traveling function, a connected car, an UAV, an AI module, a robot, an AR device, a VR device, an MR device, a hologram device, a public safety device, an MTC device, an IoT device, a medical device, a FinTech device (or a financial device), a security device, a weather/environment device, a device related to a 5G service, or a device related to a fourth industrial revolution field.
  • PDA personal digital assistant
  • PMP portable multimedia player
  • PC slate personal computer
  • tablet PC a tablet PC
  • ultrabook a vehicle, a vehicle having an autonomous
  • the UAV may be, for example, an aircraft aviated by a wireless control signal without a human being onboard.
  • the VR device may include, for example, a device for implementing an object or a background of the virtual world.
  • the AR device may include, for example, a device implemented by connecting an object or a background of the virtual world to an object or a background of the real world.
  • the MR device may include, for example, a device implemented by merging an object or a background of the virtual world into an object or a background of the real world.
  • the hologram device may include, for example, a device for implementing a stereoscopic image of 360 degrees by recording and reproducing stereoscopic information, using an interference phenomenon of light generated when two laser lights called holography meet.
  • the public safety device may include, for example, an image relay device or an image device that is wearable on the body of a user.
  • the MTC device and the IoT device may be, for example, devices that do not require direct human intervention or manipulation.
  • the MTC device and the IoT device may include smartmeters, vending machines, thermometers, smartbulbs, door locks, or various sensors.
  • the medical device may be, for example, a device used for the purpose of diagnosing, treating, relieving, curing, or preventing disease.
  • the medical device may be a device used for the purpose of diagnosing, treating, relieving, or correcting injury or impairment.
  • the medical device may be a device used for the purpose of inspecting, replacing, or modifying a structure or a function.
  • the medical device may be a device used for the purpose of adjusting pregnancy.
  • the medical device may include a device for treatment, a device for operation, a device for (in vitro) diagnosis, a hearing aid, or a device for procedure.
  • the security device may be, for example, a device installed to prevent a danger that may arise and to maintain safety.
  • the security device may be a camera, a closed-circuit TV (CCTV), a recorder, or a black box.
  • CCTV closed-circuit TV
  • the FinTech device may be, for example, a device capable of providing a financial service such as mobile payment.
  • the FinTech device may include a payment device or a point of sales (POS) system.
  • POS point of sales
  • the weather/environment device may include, for example, a device for monitoring or predicting a weather/environment.
  • the wireless devices 100a to 100f may be connected to the network 300 via the BSs 200.
  • An 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, a 5G (e.g., NR) network, and a beyond-5G network.
  • the wireless devices 100a to 100f may communicate with each other through the BSs 200/network 300, the wireless devices 100a to 100f may perform direct communication (e.g., sidelink communication) with each other without passing through the BSs 200/network 300.
  • the vehicles 100b-1 and 100b-2 may perform direct communication (e.g., vehicle-to-vehicle (V2V)/vehicle-to-everything (V2X) communication).
  • the IoT device e.g., a sensor
  • the IoT device may perform direct communication with other IoT devices (e.g., sensors) or other wireless devices 100a to 100f.
  • Wireless communication/connections 150a, 150b and 150c may be established between the wireless devices 100a to 100f and/or between wireless device 100a to 100f and BS 200 and/or between BSs 200.
  • the wireless communication/connections may be established through various RATs (e.g., 5G NR) such as uplink/downlink communication 150a, sidelink communication (or device-to-device (D2D) communication) 150b, inter-base station communication 150c (e.g., relay, integrated access and backhaul (IAB)), etc.
  • the wireless devices 100a to 100f and the BSs 200/the wireless devices 100a to 100f may transmit/receive radio signals to/from each other through the wireless communication/connections 150a, 150b and 150c.
  • the wireless communication/connections 150a, 150b and 150c may transmit/receive signals through various physical channels.
  • various configuration information configuring processes e.g., channel encoding/decoding, modulation/demodulation, and resource mapping/de-mapping
  • resource allocating processes for transmitting/receiving radio signals, may be performed based on the various proposals of the present disclosure.
  • the radio communication technologies implemented in the wireless devices in the present disclosure may include narrowband internet-of-things (NB-IoT) technology for low-power communication as well as LTE, NR and 6G.
  • NB-IoT technology may be an example of low power wide area network (LPWAN) technology, may be implemented in specifications such as LTE Cat NB1 and/or LTE Cat NB2, and may not be limited to the above-mentioned names.
  • LPWAN low power wide area network
  • the radio communication technologies implemented in the wireless devices in the present disclosure may communicate based on LTE-M technology.
  • LTE-M technology may be an example of LPWAN technology and be called by various names such as enhanced machine type communication (eMTC).
  • eMTC enhanced machine type communication
  • LTE-M technology may be implemented in at least one of the various specifications, such as 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 Communication, and/or 7) LTE M, and may not be limited to the above-mentioned names.
  • the radio communication technologies implemented in the wireless devices in the present disclosure may include at least one of ZigBee, Bluetooth, and/or LPWAN which take into account low-power communication, and may not be limited to the above-mentioned names.
  • ZigBee technology may generate personal area networks (PANs) associated with small/low-power digital communication based on various specifications such as IEEE 802.15.4 and may be called various names.
  • PANs personal area networks
  • FIG. 2 shows an example of wireless devices to which implementations of the present disclosure is applied.
  • a first wireless device 100 and a second wireless device 200 may transmit/receive radio signals to/from an external device through a variety of RATs (e.g., LTE and NR).
  • RATs e.g., LTE and NR
  • ⁇ the first wireless device 100 and the second wireless device 200 ⁇ may correspond to at least one of ⁇ the wireless device 100a to 100f and the BS 200 ⁇ , ⁇ the wireless device 100a to 100f and the wireless device 100a to 100f ⁇ and/or ⁇ the BS 200 and the BS 200 ⁇ of FIG. 1.
  • the first wireless device 100 may include one or more processors 102 and one or more memories 104 and 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 the transceiver(s) 106 and may be configured to implement the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts described in the present disclosure.
  • the processor(s) 102 may process information within 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 second information/signals through the transceiver(s) 106 and then store information obtained by 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 a variety of information related to operations of the processor(s) 102.
  • the memory(s) 104 may store software code including commands for performing a part or the entirety of processes controlled by the processor(s) 102 or for performing the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts described in the present disclosure.
  • the processor(s) 102 and the memory(s) 104 may be a part of a communication modem/circuit/chip designed to implement 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 one or more antennas 108.
  • Each of the transceiver(s) 106 may include a transmitter and/or a receiver.
  • the transceiver(s) 106 may be interchangeably used with radio frequency (RF) unit(s).
  • the first wireless device 100 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 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 the transceiver(s) 206 and may be configured to implement the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts described in the present disclosure.
  • the processor(s) 202 may process information within 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 obtained by 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 a variety of information related to operations of the processor(s) 202.
  • the memory(s) 204 may store software code including commands for performing a part or the entirety of processes controlled by the processor(s) 202 or for performing the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts described in the present disclosure.
  • the processor(s) 202 and the memory(s) 204 may be a part of a communication modem/circuit/chip designed to implement 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 one or more antennas 208.
  • Each of the transceiver(s) 206 may include a transmitter and/or a receiver.
  • the transceiver(s) 206 may be interchangeably used with RF unit(s).
  • the second wireless device 200 may represent a communication modem/circuit/chip.
  • One or more protocol layers may be implemented by, without being limited to, one or more processors 102 and 202.
  • the one or more processors 102 and 202 may implement one or more layers (e.g., functional layers such as physical (PHY) layer, media access control (MAC) layer, radio link control (RLC) layer, packet data convergence protocol (PDCP) layer, radio resource control (RRC) layer, and service data adaptation protocol (SDAP) layer).
  • layers e.g., functional layers such as physical (PHY) layer, media access control (MAC) layer, radio link control (RLC) layer, packet data convergence protocol (PDCP) layer, radio resource control (RRC) layer, and service data adaptation protocol (SDAP) layer).
  • PHY physical
  • MAC media access control
  • RLC radio link control
  • PDCP packet data convergence protocol
  • RRC radio resource control
  • SDAP service data adaptation protocol
  • the one or more processors 102 and 202 may generate one or more protocol data units (PDUs) and/or one or more service data unit (SDUs) according to the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure.
  • the one or more processors 102 and 202 may generate messages, control information, data, or information according to the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure.
  • 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, suggestions, methods and/or operational flowcharts disclosed in the present disclosure and provide the generated signals to the one or more transceivers 106 and 206.
  • the one or more processors 102 and 202 may receive the signals (e.g., baseband signals) from the one or more transceivers 106 and 206 and acquire the PDUs, SDUs, messages, control information, data, or information according to the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure.
  • the one or more processors 102 and 202 may be referred to as controllers, microcontrollers, microprocessors, or microcomputers.
  • the one or more processors 102 and 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
  • firmware or software may be implemented using firmware or software and the firmware or software may be configured to include the modules, procedures, or functions.
  • Firmware or software configured to perform the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure may be included in the one or more processors 102 and 202 or stored in the one or more memories 104 and 204 so as to be driven by the one or more processors 102 and 202.
  • the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure may be implemented using firmware or software in the form of code, commands, and/or a set of commands.
  • the one or more memories 104 and 204 may be connected to the one or more processors 102 and 202 and store various types of data, signals, messages, information, programs, code, instructions, and/or commands.
  • the one or more memories 104 and 204 may be configured by read-only memories (ROMs), random access memories (RAMs), electrically erasable programmable read-only memories (EPROMs), flash memories, hard drives, registers, cash memories, computer-readable storage media, and/or combinations thereof.
  • the one or more memories 104 and 204 may be located at the interior and/or exterior of 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 through various technologies such as wired or wireless connection.
  • the one or more transceivers 106 and 206 may transmit user data, control information, and/or radio signals/channels, mentioned in the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure, to one or more other devices.
  • the one or more transceivers 106 and 206 may receive user data, control information, and/or radio signals/channels, mentioned in the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure, from one or more other devices.
  • the one or more transceivers 106 and 206 may be connected to the one or more processors 102 and 202 and transmit and receive radio signals.
  • the one or more processors 102 and 202 may perform control so 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 so that the one or more transceivers 106 and 206 may receive user data, control information, or radio signals from one or more other devices.
  • the one or more transceivers 106 and 206 may be connected to the one or more antennas 108 and 208 and the one or more transceivers 106 and 206 may be configured to transmit and receive user data, control information, and/or radio signals/channels, mentioned in the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure, through the one or more antennas 108 and 208.
  • the one or more antennas may be a plurality of physical antennas or a plurality of 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 into baseband signals in order to process 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 the user data, control information, radio signals/channels, etc., processed using the one or more processors 102 and 202 from the base band signals into the RF band signals.
  • the one or more transceivers 106 and 206 may include (analog) oscillators and/or filters.
  • the transceivers 106 and 206 can up-convert OFDM baseband signals to a carrier frequency by their (analog) oscillators and/or filters under the control of the processors 102 and 202 and transmit the up-converted OFDM signals at the carrier frequency.
  • the transceivers 106 and 206 may receive OFDM signals at a carrier frequency and down-convert the OFDM signals into OFDM baseband signals by their (analog) oscillators and/or filters under the control of the transceivers 102 and 202.
  • a UE may operate as a transmitting device in uplink (UL) and as a receiving device in downlink (DL).
  • a BS may operate as a receiving device in UL and as a transmitting device in DL.
  • the first wireless device 100 acts as the UE
  • the second wireless device 200 acts as the BS.
  • the processor(s) 102 connected to, mounted on or launched in the first wireless device 100 may be configured to perform the UE behavior according to an implementation of the present disclosure or control the transceiver(s) 106 to perform the UE behavior according to an implementation of the present disclosure.
  • the processor(s) 202 connected to, mounted on or launched in the second wireless device 200 may be configured to perform the BS behavior according to an implementation of the present disclosure or control the transceiver(s) 206 to perform the BS behavior according to an implementation of the present disclosure.
  • a BS is also referred to as a node B (NB), an eNode B (eNB), or a gNB.
  • NB node B
  • eNB eNode B
  • gNB gNode B
  • FIG. 3 shows an example of a wireless device to which implementations of the present disclosure is applied.
  • the wireless device may be implemented in various forms according to a use-case/service (refer to FIG. 1).
  • wireless devices 100 and 200 may correspond to the wireless devices 100 and 200 of FIG. 2 and may be configured by various elements, components, units/portions, and/or modules.
  • each of the wireless devices 100 and 200 may include a communication unit 110, a control unit 120, a memory unit 130, and additional components 140.
  • the communication unit 110 may include a communication circuit 112 and transceiver(s) 114.
  • the communication circuit 112 may include the one or more processors 102 and 202 of FIG. 2 and/or the one or more memories 104 and 204 of FIG. 2.
  • the transceiver(s) 114 may include the one or more transceivers 106 and 206 of FIG.
  • the control unit 120 is electrically connected to the communication unit 110, the memory 130, and the additional components 140 and controls overall operation of each of the wireless devices 100 and 200. For example, the control unit 120 may control an electric/mechanical operation of each of the wireless devices 100 and 200 based on programs/code/commands/information stored in the memory unit 130.
  • the control unit 120 may transmit the information stored in the memory unit 130 to the exterior (e.g., other communication devices) via the communication unit 110 through a wireless/wired interface or store, in the memory unit 130, information received through the wireless/wired interface from the exterior (e.g., other communication devices) via the communication unit 110.
  • the additional components 140 may be variously configured according to types of the wireless devices 100 and 200.
  • the additional components 140 may include at least one of a power unit/battery, input/output (I/O) unit (e.g., audio I/O port, video I/O port), a driving unit, and a computing unit.
  • I/O input/output
  • the wireless devices 100 and 200 may be implemented in the form of, without being limited to, the robot (100a of FIG. 1), the vehicles (100b-1 and 100b-2 of FIG. 1), the XR device (100c of FIG. 1), the hand-held device (100d of FIG. 1), the home appliance (100e of FIG. 1), the IoT device (100f of FIG.
  • the wireless devices 100 and 200 may be used in a mobile or fixed place according to a use-example/service.
  • the entirety of the various elements, components, units/portions, and/or modules in the wireless devices 100 and 200 may be connected to each other through a wired interface or at least a part thereof may be wirelessly connected through the communication unit 110.
  • the control unit 120 and the communication unit 110 may be connected by wire and the control unit 120 and first units (e.g., 130 and 140) may be wirelessly connected through the communication unit 110.
  • Each element, component, unit/portion, and/or module within the wireless devices 100 and 200 may further include one or more elements.
  • the control unit 120 may be configured by a set of one or more processors.
  • control unit 120 may be configured by a set of a communication control processor, an application processor (AP), an electronic control unit (ECU), a graphical processing unit, and a memory control processor.
  • the memory 130 may be configured by a RAM, a DRAM, a ROM, a flash memory, a volatile memory, a non-volatile memory, and/or a combination thereof.
  • FIG. 4 shows another example of wireless devices to which implementations of the present disclosure is applied.
  • wireless devices 100 and 200 may correspond to the wireless devices 100 and 200 of FIG. 2 and may be configured by various elements, components, units/portions, and/or modules.
  • the first wireless device 100 may include at least one transceiver, such as a transceiver 106, and at least one processing chip, such as a processing chip 101.
  • the processing chip 101 may include at least one processor, such a processor 102, and at least one memory, such as a memory 104.
  • the memory 104 may be operably connectable to the processor 102.
  • the memory 104 may store various types of information and/or instructions.
  • the memory 104 may store a software code 105 which implements instructions that, when executed by the processor 102, perform the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure.
  • the software code 105 may implement instructions that, when executed by the processor 102, perform the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure.
  • the software code 105 may control the processor 102 to perform one or more protocols.
  • the software code 105 may control the processor 102 may perform one or more layers of the radio interface protocol.
  • the second wireless device 200 may include at least one transceiver, such as a transceiver 206, and at least one processing chip, such as a processing chip 201.
  • the processing chip 201 may include at least one processor, such a processor 202, and at least one memory, such as a memory 204.
  • the memory 204 may be operably connectable to the processor 202.
  • the memory 204 may store various types of information and/or instructions.
  • the memory 204 may store a software code 205 which implements instructions that, when executed by the processor 202, perform the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure.
  • the software code 205 may implement instructions that, when executed by the processor 202, perform the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure.
  • the software code 205 may control the processor 202 to perform one or more protocols.
  • the software code 205 may control the processor 202 may perform one or more layers of the radio interface protocol.
  • FIG. 5 shows an example of UE to which implementations of the present disclosure is applied.
  • a UE 100 may correspond to the first wireless device 100 of FIG. 2 and/or the first wireless device 100 of FIG. 4.
  • a UE 100 includes a processor 102, a memory 104, a transceiver 106, one or more antennas 108, a power management module 110, a battery 1112, a display 114, a keypad 116, a subscriber identification module (SIM) card 118, a speaker 120, and a microphone 122.
  • SIM subscriber identification module
  • the processor 102 may be configured to implement the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure.
  • the processor 102 may be configured to control one or more other components of the UE 100 to implement the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure.
  • Layers of the radio interface protocol may be implemented in the processor 102.
  • the processor 102 may include ASIC, other chipset, logic circuit and/or data processing device.
  • the processor 102 may be an application processor.
  • the processor 102 may include at least one of a digital signal processor (DSP), a central processing unit (CPU), a graphics processing unit (GPU), a modem (modulator and demodulator).
  • DSP digital signal processor
  • CPU central processing unit
  • GPU graphics processing unit
  • modem modulator and demodulator
  • processor 102 may be found in SNAPDRAGON TM series of processors made by Qualcomm ® , EXYNOS TM series of processors made by Samsung ® , A series of processors made by Apple ® , HELIO TM series of processors made by MediaTek ® , ATOM TM series of processors made by Intel ® or a corresponding next generation processor.
  • the memory 104 is operatively coupled with the processor 102 and stores a variety of information to operate the processor 102.
  • the memory 104 may include ROM, RAM, flash memory, memory card, storage medium and/or other storage device.
  • modules e.g., procedures, functions, etc.
  • the modules can be stored in the memory 104 and executed by the processor 102.
  • the memory 104 can be implemented within the processor 102 or external to the processor 102 in which case those can be communicatively coupled to the processor 102 via various means as is known in the art.
  • the transceiver 106 is operatively coupled with the processor 102, and transmits and/or receives a radio signal.
  • the transceiver 106 includes a transmitter and a receiver.
  • the transceiver 106 may include baseband circuitry to process radio frequency signals.
  • the transceiver 106 controls the one or more antennas 108 to transmit and/or receive a radio signal.
  • the power management module 110 manages power for the processor 102 and/or the transceiver 106.
  • the battery 112 supplies power to the power management module 110.
  • the display 114 outputs results processed by the processor 102.
  • the keypad 116 receives inputs to be used by the processor 102.
  • the keypad 16 may be shown on the display 114.
  • the SIM card 118 is an integrated circuit that is intended to securely store the international mobile subscriber identity (IMSI) number and its related key, which are used to identify and authenticate subscribers on mobile telephony devices (such as mobile phones and computers). It is also possible to store contact information on many SIM cards.
  • IMSI international mobile subscriber identity
  • the speaker 120 outputs sound-related results processed by the processor 102.
  • the microphone 122 receives sound-related inputs to be used by the processor 102.
  • FIGS. 6 and 7 show an example of protocol stacks in a 3GPP based wireless communication system to which implementations of the present disclosure is applied.
  • FIG. 6 illustrates an example of a radio interface user plane protocol stack between a UE and a BS
  • FIG. 7 illustrates an example of a radio interface control plane protocol stack between a UE and a BS.
  • the control plane refers to a path through which control messages used to manage call by a UE and a network are transported.
  • the user plane refers to a path through which data generated in an application layer, for example, voice data or Internet packet data are transported.
  • the user plane protocol stack may be divided into Layer 1 (i.e., a PHY layer) and Layer 2.
  • the control plane protocol stack may be divided into Layer 1 (i.e., a PHY layer), Layer 2, Layer 3 (e.g., an RRC layer), and a non-access stratum (NAS) layer.
  • Layer 1 i.e., a PHY layer
  • Layer 2 e.g., an RRC layer
  • NAS non-access stratum
  • Layer 1 Layer 2 and Layer 3 are referred to as an access stratum (AS).
  • the Layer 2 is split into the following sublayers: MAC, RLC, and PDCP.
  • the Layer 2 is split into the following sublayers: MAC, RLC, PDCP and SDAP.
  • the PHY layer offers to the MAC sublayer transport channels, the MAC sublayer offers to the RLC sublayer logical channels, the RLC sublayer offers to the PDCP sublayer RLC channels, the PDCP sublayer offers to the SDAP sublayer radio bearers.
  • the SDAP sublayer offers to 5G core network quality of service (QoS) flows.
  • QoS quality of service
  • the main services and functions of the MAC sublayer include: mapping between logical channels and transport channels; multiplexing/de-multiplexing of MAC SDUs belonging to one or different logical channels into/from transport blocks (TB) delivered to/from the physical layer on transport channels; scheduling information reporting; error correction through hybrid automatic repeat request (HARQ) (one HARQ entity per cell in case of carrier aggregation (CA)); priority handling between UEs by means of dynamic scheduling; priority handling between logical channels of one UE by means of logical channel prioritization; padding.
  • HARQ hybrid automatic repeat request
  • a single MAC entity may support multiple numerologies, transmission timings and cells. Mapping restrictions in logical channel prioritization control which numerology(ies), cell(s), and transmission timing(s) a logical channel can use.
  • MAC Different kinds of data transfer services are offered by MAC.
  • multiple types of logical channels are defined, i.e., each supporting transfer of a particular type of information.
  • Each logical channel type is defined by what type of information is transferred.
  • Logical channels are classified into two groups: control channels and traffic channels. Control channels are used for the transfer of control plane information only, and traffic channels are used for the transfer of user plane information only.
  • Broadcast control channel is a downlink logical channel for broadcasting system control information
  • PCCH paging control channel
  • PCCH is a downlink logical channel that transfers paging information
  • common control channel CCCH
  • DCCH dedicated control channel
  • DTCH Dedicated traffic channel
  • a DTCH can exist in both uplink and downlink.
  • BCCH can be mapped to broadcast channel (BCH); BCCH can be mapped to downlink shared channel (DL-SCH); PCCH can be mapped to paging channel (PCH); CCCH can be mapped to DL-SCH; DCCH can be mapped to DL-SCH; and DTCH can be mapped to DL-SCH.
  • PCCH downlink shared channel
  • CCCH can be mapped to DL-SCH
  • DCCH can be mapped to DL-SCH
  • DTCH can be mapped to DL-SCH.
  • the RLC sublayer supports three transmission modes: transparent mode (TM), unacknowledged mode (UM), and acknowledged node (AM).
  • the RLC configuration is per logical channel with no dependency on numerologies and/or transmission durations.
  • the main services and functions of the RLC sublayer depend on the transmission mode and include: transfer of upper layer PDUs; sequence numbering independent of the one in PDCP (UM and AM); error correction through ARQ (AM only); segmentation (AM and UM) and re-segmentation (AM only) of RLC SDUs; reassembly of SDU (AM and UM); duplicate detection (AM only); RLC SDU discard (AM and UM); RLC re-establishment; protocol error detection (AM only).
  • the main services and functions of the PDCP sublayer for the user plane include: sequence numbering; header compression and decompression using robust header compression (ROHC); transfer of user data; reordering and duplicate detection; in-order delivery; PDCP PDU routing (in case of split bearers); retransmission of PDCP SDUs; ciphering, deciphering and integrity protection; PDCP SDU discard; PDCP re-establishment and data recovery for RLC AM; PDCP status reporting for RLC AM; duplication of PDCP PDUs and duplicate discard indication to lower layers.
  • ROIHC robust header compression
  • the main services and functions of the PDCP sublayer for the control plane include: sequence numbering; ciphering, deciphering and integrity protection; transfer of control plane data; reordering and duplicate detection; in-order delivery; duplication of PDCP PDUs and duplicate discard indication to lower layers.
  • the main services and functions of SDAP include: mapping between a QoS flow and a data radio bearer; marking QoS flow ID (QFI) in both DL and UL packets.
  • QFI QoS flow ID
  • a single protocol entity of SDAP is configured for each individual PDU session.
  • the main services and functions of the RRC sublayer include: broadcast of system information related to AS and NAS; paging initiated by 5GC or NG-RAN; establishment, maintenance and release of an RRC connection between the UE and NG-RAN; security functions including key management; establishment, configuration, maintenance and release of signaling radio bearers (SRBs) and data radio bearers (DRBs); mobility functions (including: handover and context transfer, UE cell selection and reselection and control of cell selection and reselection, inter-RAT mobility); QoS management functions; UE measurement reporting and control of the reporting; detection of and recovery from radio link failure; NAS message transfer to/from NAS from/to UE.
  • SRBs signaling radio bearers
  • DRBs data radio bearers
  • mobility functions including: handover and context transfer, UE cell selection and reselection and control of cell selection and reselection, inter-RAT mobility
  • QoS management functions UE measurement reporting and control of the reporting; detection of and recovery from radio link failure; NAS
  • FIG. 8 shows a frame structure in a 3GPP based wireless communication system to which implementations of the present disclosure is applied.
  • OFDM numerologies e.g., subcarrier spacing (SCS), transmission time interval (TTI) duration
  • SCCS subcarrier spacing
  • TTI transmission time interval
  • symbols may include OFDM symbols (or CP-OFDM symbols), SC-FDMA symbols (or discrete Fourier transform-spread-OFDM (DFT-s-OFDM) symbols).
  • Each frame is divided into two half-frames, where each of the half-frames has 5ms duration.
  • Each half-frame consists of 5 subframes, where the duration T sf per subframe is 1ms.
  • Each subframe is divided into slots and the number of slots in a subframe depends on a subcarrier spacing.
  • Each slot includes 14 or 12 OFDM symbols based on a cyclic prefix (CP). In a normal CP, each slot includes 14 OFDM symbols and, in an extended CP, each slot includes 12 OFDM symbols.
  • a slot includes plural symbols (e.g., 14 or 12 symbols) in the time domain.
  • a resource grid of N size,u grid,x * N RB sc subcarriers and N subframe,u symb OFDM symbols is defined, starting at common resource block (CRB) N start,u grid indicated by higher-layer signaling (e.g., RRC signaling), where N size,u grid,x is the number of resource blocks (RBs) in the resource grid and the subscript x is DL for downlink and UL for uplink.
  • N RB sc is the number of subcarriers per RB. In the 3GPP based wireless communication system, N RB sc is 12 generally.
  • Each element in the resource grid for the antenna port p and the subcarrier spacing configuration u is referred to as a resource element (RE) and one complex symbol may be mapped to each RE.
  • Each RE in the resource grid is uniquely identified by an index k in the frequency domain and an index l representing a symbol location relative to a reference point in the time domain.
  • an RB is defined by 12 consecutive subcarriers in the frequency domain.
  • RBs are classified into CRBs and physical resource blocks (PRBs).
  • CRBs are numbered from 0 and upwards in the frequency domain for subcarrier spacing configuration u .
  • the center of subcarrier 0 of CRB 0 for subcarrier spacing configuration u coincides with 'point A' which serves as a common reference point for resource block grids.
  • PRBs are defined within a bandwidth part (BWP) and numbered from 0 to N size BWP,i -1, where i is the number of the bandwidth part.
  • BWP bandwidth part
  • n PRB n CRB + N size BWP,i , where N size BWP,i is the common resource block where bandwidth part starts relative to CRB 0.
  • the BWP includes a plurality of consecutive RBs.
  • a carrier may include a maximum of N (e.g., 5) BWPs.
  • a UE may be configured with one or more BWPs on a given component carrier. Only one BWP among BWPs configured to the UE can active at a time. The active BWP defines the UE's operating bandwidth within the cell's operating bandwidth.
  • the NR frequency band may be defined as two types of frequency range, i.e., FR1 and FR2.
  • the numerical value of the frequency range may be changed.
  • the frequency ranges of the two types may be as shown in Table 3 below.
  • FR1 may mean "sub 6 GHz range”
  • FR2 may mean “above 6 GHz range”
  • mmW millimeter wave
  • FR1 may include a frequency band of 410MHz to 7125MHz as shown in Table 4 below. That is, FR1 may include a frequency band of 6GHz (or 5850, 5900, 5925 MHz, etc.) or more. For example, a frequency band of 6 GHz (or 5850, 5900, 5925 MHz, etc.) or more included in FR1 may include an unlicensed band. Unlicensed bands may be used for a variety of purposes, for example for communication for vehicles (e.g., autonomous driving).
  • the term "cell” may refer to a geographic area to which one or more nodes provide a communication system, or refer to radio resources.
  • a “cell” as a geographic area may be understood as coverage within which a node can provide service using a carrier and a "cell” as radio resources (e.g., time-frequency resources) is associated with bandwidth which is a frequency range configured by the carrier.
  • the "cell” associated with the radio resources is defined by a combination of downlink resources and uplink resources, for example, a combination of a DL component carrier (CC) and a UL CC.
  • the cell may be configured by downlink resources only, or may be configured by downlink resources and uplink resources.
  • the coverage of the node may be associated with coverage of the "cell" of radio resources used by the node. Accordingly, the term "cell" may be used to represent service coverage of the node sometimes, radio resources at other times, or a range that signals using the radio resources can reach with valid strength at other times.
  • CA two or more CCs are aggregated.
  • a UE may simultaneously receive or transmit on one or multiple CCs depending on its capabilities.
  • CA is supported for both contiguous and non-contiguous CCs.
  • the UE When CA is configured, the UE only has one RRC connection with the network.
  • one serving cell At RRC connection establishment/re-establishment/handover, one serving cell provides the NAS mobility information, and at RRC connection re-establishment/handover, one serving cell provides the security input.
  • This cell is referred to as the primary cell (PCell).
  • the PCell is a cell, operating on the primary frequency, in which the UE either performs the initial connection establishment procedure or initiates the connection re-establishment procedure.
  • secondary cells can be configured to form together with the PCell a set of serving cells.
  • An SCell is a cell providing additional radio resources on top of special cell (SpCell).
  • the configured set of serving cells for a UE therefore always consists of one PCell and one or more SCells.
  • the term SpCell refers to the PCell of the master cell group (MCG) or the primary SCell (PSCell) of the secondary cell group (SCG).
  • MCG master cell group
  • PSCell primary SCell
  • SCG secondary cell group
  • An SpCell supports PUCCH transmission and contention-based random access, and is always activated.
  • the MCG is a group of serving cells associated with a master node, comprised of the SpCell (PCell) and optionally one or more SCells.
  • the SCG is the subset of serving cells associated with a secondary node, comprised of the PSCell and zero or more SCells, for a UE configured with DC.
  • a UE in RRC_CONNECTED not configured with CA/DC there is only one serving cell comprised of the PCell.
  • serving cells is used to denote the set of cells comprised of the SpCell(s) and all SCells.
  • two MAC entities are configured in a UE: one for the MCG and one for the SCG.
  • FIG. 9 shows a data flow example in the 3GPP NR system to which implementations of the present disclosure is applied.
  • Radio bearers are categorized into two groups: DRBs for user plane data and SRBs for control plane data.
  • the MAC PDU is transmitted/received using radio resources through the PHY layer to/from an external device.
  • the MAC PDU arrives to the PHY layer in the form of a transport block.
  • the uplink transport channels UL-SCH and RACH are mapped to their physical channels PUSCH and PRACH, respectively, and the downlink transport channels DL-SCH, BCH and PCH are mapped to PDSCH, PBCH and PDSCH, respectively.
  • uplink control information (UCI) is mapped to PUCCH
  • downlink control information (DCI) is mapped to PDCCH.
  • a MAC PDU related to UL-SCH is transmitted by a UE via a PUSCH based on an UL grant
  • a MAC PDU related to DL-SCH is transmitted by a BS via a PDSCH based on a DL assignment.
  • Section 5.5 of 3GPP TS 38.331 v16.1.0 may be referred.
  • the network may configure an RRC_CONNECTED UE to perform measurements.
  • the network may configure the UE to report them in accordance with the measurement configuration or perform conditional reconfiguration evaluation in accordance with the conditional reconfiguration.
  • the measurement configuration is provided by means of dedicated signalling i.e. using the RRCReconfiguration or RRCResume .
  • the network may configure the UE to perform the following types of measurements:
  • the network may configure the UE to report the following measurement information based on SS/PBCH block(s):
  • the network may configure the UE to report the following measurement information based on CSI-RS resources:
  • the network may configure the UE to perform the following types of measurements for sidelink:
  • the network may configure the UE to report the following measurement information based on SRS resources:
  • the network may configure the UE to report the following measurement information based on CLI-RSSI resources:
  • the measurement configuration includes the following parameters:
  • Measurement objects A list of objects on which the UE shall perform the measurements.
  • a measurement object indicates the frequency/time location and subcarrier spacing of reference signals to be measured.
  • the network may configure a list of cell specific offsets, a list of 'blacklisted' cells and a list of 'whitelisted' cells. Blacklisted cells are not applicable in event evaluation or measurement reporting. Whitelisted cells are the only ones applicable in event evaluation or measurement reporting.
  • the measObjectId of the MO which corresponds to each serving cell is indicated by servingCellMO within the serving cell configuration.
  • a measurement object is a single E-UTRA carrier frequency.
  • the network can configure a list of cell specific offsets, a list of 'blacklisted' cells and a list of 'whitelisted' cells. Blacklisted cells are not applicable in event evaluation or measurement reporting. Whitelisted cells are the only ones applicable in event evaluation or measurement reporting.
  • a measurement object is a set of cells on a single UTRA-FDD carrier frequency.
  • a measurement object is a set of transmission resource pool(s) on a single carrier frequency for NR sidelink communication.
  • a measurement object indicates the frequency/time location of SRS resources and/or CLI-RSSI resources, and subcarrier spacing of SRS resources to be measured.
  • Reporting configurations A list of reporting configurations where there can be one or multiple reporting configurations per measurement object.
  • Each measurement reporting configuration consists of the following:
  • the criterion that triggers the UE to send a measurement report This can either be periodical or a single event description.
  • - RS type The RS that the UE uses for beam and cell measurement results (SS/PBCH block or CSI-RS).
  • the quantities per cell and per beam that the UE includes in the measurement report e.g. RSRP
  • other associated information such as the maximum number of cells and the maximum number beams per cell to report.
  • each configuration consists of the following:
  • Execution criteria The criteria that triggers the UE to perform conditional reconfiguration execution.
  • - RS type The RS that the UE uses for beam and cell measurement results (SS/PBCH block or CSI-RS) for conditional reconfiguration execution condition.
  • Measurement identities For measurement reporting, a list of measurement identities where each measurement identity links one measurement object with one reporting configuration. By configuring multiple measurement identities, it is possible to link more than one measurement object to the same reporting configuration, as well as to link more than one reporting configuration to the same measurement object.
  • the measurement identity is also included in the measurement report that triggered the reporting, serving as a reference to the network.
  • conditional reconfiguration triggering one measurement identity links to exactly one conditional reconfiguration trigger configuration. And up to 2 measurement identities can be linked to one conditional reconfiguration execution condition.
  • Quantity configurations The quantity configuration defines the measurement filtering configuration used for all event evaluation and related reporting, and for periodical reporting of that measurement.
  • the network may configure up to 2 quantity configurations with a reference in the NR measurement object to the configuration that is to be used. In each configuration, different filter coefficients can be configured for different measurement quantities, for different RS types, and for measurements per cell and per beam.
  • Measurement gaps Periods that the UE may use to perform measurements.
  • a UE in RRC_CONNECTED maintains a measurement object list, a reporting configuration list, and a measurement identities list according to signalling and procedures in this specification.
  • the measurement object list possibly includes NR measurement object(s) , CLI measurement object(s) and inter-RAT objects.
  • the reporting configuration list includes NR and inter-RAT reporting configurations. Any measurement object can be linked to any reporting configuration of the same RAT type. Some reporting configurations may not be linked to a measurement object. Likewise, some measurement objects may not be linked to a reporting configuration.
  • the measurement procedures distinguish the following types of cells:
  • the NR serving cell(s) - these are the SpCell and one or more SCells.
  • Detected cells these are cells that are not listed within the measurement object(s) but are detected by the UE on the SSB frequency(ies) and subcarrier spacing(s) indicated by the measurement object(s).
  • the UE measures and reports on the serving cell(s), listed cells and/or detected cells.
  • the UE measures and reports on listed cells and detected cells and, for RSSI and channel occupancy measurements, the UE measures and reports on the configured resources on the indicated frequency.
  • the UE measures and reports on listed cells.
  • the UE measures and reports on configured CLI measurement resources (i.e. SRS resources and/or CLI-RSSI resources).
  • the UE may receive two independent measConfig :
  • a measConfig associated with SCG, that is included in the RRCReconfiguration message received via SRB3, or, alternatively, included within a RRCReconfiguration message embedded in a RRCReconfiguration message received via SRB1.
  • the UE maintains two independent VarMeasConfig and VarMeasReportList , one associated with each measConfig , and independently performs all the procedures for each measConfig and the associated VarMeasConfig and VarMeasReportList , unless explicitly stated otherwise.
  • the configurations related to CBR measurements are only included in the measConfig associated with MCG.
  • Measurement configuration may be described.
  • the network applies the procedure as follows:
  • the UE has a measConfig associated with a CG, it includes a measObject for the SpCell and for each NR SCell of the CG to be measured;
  • an smtc1 included in any measurement object with the same ssbFrequency has the same value and that an smtc2 included in any measurement object with the same ssbFrequency has the same value;
  • the measurement window according to the smtc1 configured by the MCG includes the measurement window according to the smtc1 configured by the SCG, or vice-versa, with an accuracy of the maximum receive timing difference.
  • the measurement window according to the smtc includes the measurement window according to the smtc1 , or vice-versa, with an accuracy of the maximum receive timing difference.
  • the network applies the procedure as follows:
  • the UE shall:
  • the UE does not consider the message as erroneous if the measIdToRemoveList includes any measId value that is not part of the current UE configuration.
  • the network applies the procedure as follows:
  • the UE shall:
  • start timer T321 with the timer value set to 1 second for this measId ;
  • start timer T321 with the timer value set to 2 seconds for this measId ;
  • start timer T321 with the timer value set to 2 seconds for this measId ;
  • start timer T321 with the timer value set to 16 seconds for this measId .
  • start timer T322 with the timer value set to 3 seconds for this measId ;
  • start timer T322 with the timer value set to 24 seconds for this measId .
  • the UE shall:
  • the UE does not consider the message as erroneous if the measObjectToRemoveList includes any measObjectId value that is not part of the current UE configuration.
  • the UE shall:
  • a cell For each pci - RangeIndex included in the blackCellsToRemoveList that concerns overlapping ranges of cells, a cell is removed from the blacklist of cells only if all PCI ranges containing it are removed.
  • a cell For each pci - RangeIndex included in the whiteCellsToRemoveList that concerns overlapping ranges of cells, a cell is removed from the whitelist of cells only if all PCI ranges containing it are removed.
  • An RRC_CONNECTED UE shall derive cell measurement results by measuring one or multiple beams associated per cell as configured by the network. For all cell measurement results and CLI measurement results in RRC_CONNECTED, except for RSSI, the UE applies the layer 3 filtering, before using the measured results for evaluation of reporting criteria, measurement reporting or the criteria to trigger conditional reconfiguration execution.
  • the network can configure RSRP, RSRQ, SINR, RSCP or EcN0 as trigger quantity.
  • the network can configure SRS-RSRP or CLI-RSSI as trigger quantity.
  • reporting quantities can be any combination of quantities (i.e.
  • reporting quantities can be only SRS-RSRP or only CLI-RSSI.
  • the network can configure up to 2 quantities, both using same RS type. The UE does not apply the layer 3 filtering to derive the CBR measurements.
  • the network may also configure the UE to report measurement information per beam (which can either be measurement results per beam with respective beam identifier(s) or only beam identifier(s)). If beam measurement information is configured to be included in measurement reports, the UE applies the layer 3 beam filtering. On the other hand, the exact L1 filtering of beam measurements used to derive cell measurement results is implementation dependent.
  • the UE shall:
  • the reportConfig associated with at least one measId included in the measIdList within VarMeasConfig contains a reportQuantityRS -Indexes and maxNrofRS - IndexesToReport and contains an rsType set to ssb :
  • the reportConfig associated with at least one measId included in the measIdList within VarMeasConfig contains an rsType set to csi - rs and CSI-RS-ResourceConfigMobility is configured in the measObject indicated by the servingCellMO :
  • the reportConfig associated with at least one measId included in the measIdList within VarMeasConfig contains a reportQuantityRS -Indexes and maxNrofRS - IndexesToReport and contains an rsType set to csi - rs :
  • reportConfig contains a reportQuantityRS -Indexes and maxNrofRS-IndexesToReport :
  • the reportConfig contains rsType set to csi - rs and CSI- RS -ResourceConfigMobility is configured in the servingCellMO :
  • reportConfig contains a reportQuantityRS -Indexes and maxNrofRS-IndexesToReport :
  • reportQuantityRS-Indexes and maxNrofRS-IndexesToReport for the associated reportConfig are configured:
  • reportQuantityRS-Indexes and maxNrofRS-IndexesToReport for the associated reportConfig are configured:
  • reportConfig is condTriggerConfig .
  • the UE capable of CBR measurement when configured to transmit NR sidelink communication shall:
  • SIB12 which includes sl - TxPoolSelectedNormal or sl - TxPoolExceptional for the concerned frequency:
  • configurations for NR sidelink communication and CBR measurement are acquired via the E-UTRA
  • configurations for NR sidelink communication in SIB12 , sl - ConfigDedicatedNR within RRCReconfiguration used in this subclause are provided by the configurations in SystemInformationBlockType28 , sl - ConfigDedicatedNR within RRCConnectionReconfiguration , respectively.
  • a UE that is configured by upper layers to transmit V2X sidelink communication is configured by NR with transmission resource pool(s) and the measurement objects concerning V2X sidelink communication (i.e. by sl- ConfigDedicatedEUTRA ), it shall perform CBR measurement, based on the transmission resource pool(s) and the measurement object(s) concerning V2X sidelink communication configured by NR.
  • each of the CBR measurement results is associated with a resource pool, as indicated by the poolReportId , that refers to a pool as included in sl - ConfigDedicatedEUTRA or SIB13 .
  • a new state for example, a deactivated state or a dormant state
  • sections 7.5, 7.6, and 11.2 of 3GPP TS 36.300 v16.2.0 may be referred.
  • the UE When CA is configured, the UE only has one RRC connection with the network.
  • one serving cell At RRC connection establishment/re-establishment/handover, one serving cell provides the NAS mobility information (e.g. TAI), and at RRC connection re-establishment/handover, one serving cell provides the security input.
  • This cell is referred to as the Primary Cell (PCell).
  • the carrier corresponding to the PCell is the Downlink Primary Component Carrier (DL PCC) while in the uplink it is the Uplink Primary Component Carrier (UL PCC).
  • DL PCC Downlink Primary Component Carrier
  • UPCC Uplink Primary Component Carrier
  • SCells can be configured to form together with the PCell a set of serving cells.
  • the carrier corresponding to an SCell is a Downlink Secondary Component Carrier (DL SCC) while in the uplink it is an Uplink Secondary Component Carrier (UL SCC).
  • DL SCC Downlink Secondary Component Carrier
  • UL SCC Uplink Secondary Component Carrier
  • the configured set of serving cells for a UE therefore always consists of one PCell and one or more SCells:
  • the usage of uplink resources by the UE in addition to the downlink ones is configurable (the number of DL SCCs configured is therefore always larger than or equal to the number of UL SCCs and no SCell can be configured for usage of uplink resources only);
  • An SCell may be configured to start in either deactivated, dormant or activated mode
  • each uplink resource only belongs to one serving cell
  • the number of serving cells that can be configured depends on the aggregation capability of the UE
  • - PCell can only be changed with handover procedure (i.e. with security key change and, unless RACH-less HO is configured, with RACH procedure);
  • - PCell is used for transmission of PUCCH
  • one additional PUCCH can be configured on an SCell, the PUCCH SCell;
  • PCell cannot be de-activated or be in dormant SCell state
  • the reconfiguration, addition and removal of SCells can be performed by RRC.
  • the network may decide to keep or release any previously configured SCells from the UE context.
  • the network can also add, remove, or reconfigure SCells for usage with the target PCell.
  • dedicated RRC signalling is used for sending all required system information of the SCell i.e. while in connected mode, UEs need not acquire broadcasted system information directly from the SCells.
  • a common configuration, applicable for multiple SCells, may be provided in addition to dedicated SCell configuration.
  • RRC configures the mapping of each serving cell to Primary PUCCH group or Secondary PUCCH group, i.e., for each SCell whether the PCell or the PUCCH SCell is used for the transmission of ACK/NAKs and CSI reports.
  • a PUCCH SCell cannot be in dormant state.
  • the eNB can configure whether the data of a logical channel can be transferred via LAA SCells.
  • the configured set of serving cells for a UE consists of two subsets: the Master Cell Group (MCG) containing the serving cells of the MeNB, and the Secondary Cell Group (SCG) containing the serving cells of the SeNB.
  • MCG Master Cell Group
  • SCG Secondary Cell Group
  • At least one cell in SCG has a configured UL CC and one of them, named PSCell, is configured with PUCCH resources;
  • the DL data transfer over the MeNB is maintained.
  • PSCell cannot be de-activated and cannot be in dormant SCell state
  • - PSCell can only be changed with SCG change (i.e. with security key change and, unless RACH-less HO is configured, with RACH procedure);
  • the MeNB maintains the RRM measurement configuration of the UE and may, e.g. based on received measurement reports or traffic conditions or bearer types, decide to ask a SeNB to provide additional resources (serving cells) for a UE.
  • a SeNB may create the container that will result in the configuration of additional serving cells for the UE (or decide that it has no resource available to do so).
  • the MeNB For UE capability coordination, the MeNB provides (part of) the AS configuration and the UE capabilities to the SeNB.
  • the MeNB and the SeNB exchange information about UE configuration by means of RRC containers (inter-node messages) carried in X2 messages.
  • the SeNB may initiate a reconfiguration of its existing serving cells (e.g., PUCCH towards the SeNB).
  • the SeNB decides which cell is the PSCell within the SCG.
  • the MeNB does not change the content of the RRC configuration provided by the SeNB.
  • the MeNB may provide the latest measurement results for the SCG cell(s).
  • Both MeNB and SeNB know the SFN and subframe offset of each other by OAM or UE measurement, e.g., for the purpose of DRX alignment and identification of measurement gap.
  • dedicated RRC signalling is used for sending all required system information of the cell as for CA, except for the SFN acquired from MIB of the PSCell of SCG.
  • an activation/deactivation mechanism of SCells is supported (i.e. activation/deactivation does not apply to PCell).
  • the UE When an SCell is deactivated, the UE does not need to receive the corresponding PDCCH or PDSCH, cannot transmit in the corresponding uplink, nor is it required to perform CQI measurements.
  • the UE when an SCell is active, the UE shall receive PDSCH and PDCCH (if the UE is configured to monitor PDCCH from this SCell), and is expected to be able to perform CQI measurements.
  • a temporary CQI reporting period (called short CQI period) can be supported during SCell activation period.
  • E-UTRAN ensures that while PUCCH SCell is deactivated, SCells of secondary PUCCH group should not be activated or dormant. E-UTRAN ensures that SCells mapped to PUCCH SCell are deactivated before the PUCCH SCell is changed or removed.
  • a dormant state for SCells (i.e. not PCell or PSCell) is supported.
  • the UE does not need to receive the corresponding PDCCH or PDSCH, cannot transmit in the corresponding uplink, but is required to perform CQI measurements.
  • a PUCCH SCell cannot be in dormant state.
  • the activation/deactivation mechanism is based on the combination of a MAC control element and deactivation timers.
  • the MAC control element carries a bitmap for the activation and deactivation of SCells: a bit set to 1 denotes activation of the corresponding SCell, while a bit set to 0 denotes deactivation.
  • SCells can be activated and deactivated individually, and a single activation/deactivation command can activate/deactivate a subset of the SCells.
  • One deactivation timer is maintained per SCell but one common value is configured per UE by RRC.
  • the state transitions to and from dormant SCell state use MAC control elements.
  • the serving cells of the MCG other than the PCell can only be activated/deactivated by the MAC Control Element received on MCG, and the serving cells of the SCG other than PSCell can only be activated/ deactivated by the MAC Control Element received on SCG.
  • the MAC entity applies the bitmap for the associated cells of either MCG or SCG.
  • PSCell in SCG is always activated like the PCell (i.e. deactivation timer is not applied to PSCell). With the exception of PUCCH SCell, one deactivation timer is maintained per SCell but one common value is configured per CG by RRC.
  • the UE shall:
  • the received RRCConnectionReconfiguration message includes sCellState for the SCell and indicates dormant :
  • the UE shall:
  • the Physical Downlink Control Channel can be used to schedule DL transmissions on PDSCH and UL transmissions on PUSCH, where the Downlink Control Information (DCI) on PDCCH includes:
  • Uplink scheduling grants containing at least modulation and coding format, resource allocation, and hybrid-ARQ information related to UL-SCH.
  • PDCCH can be used to for
  • IAB-DU In IAB context, indicating the availability for soft symbols of an IAB-DU.
  • a UE monitors a set of PDCCH candidates in the configured monitoring occasions in one or more configured COntrol REsource SETs (CORESETs) according to the corresponding search space configurations.
  • CORESETs COntrol REsource SETs
  • a CORESET consists of a set of PRBs with a time duration of 1 to 3 OFDM symbols.
  • the resource units Resource Element Groups (REGs) and Control Channel Elements (CCEs) are defined within a CORESET with each CCE consisting a set of REGs.
  • Control channels are formed by aggregation of CCE. Different code rates for the control channels are realized by aggregating different number of CCE. Interleaved and non-interleaved CCE-to-REG mapping are supported in a CORESET.
  • Polar coding is used for PDCCH.
  • a bandwidth part is a subset of contiguous common resource blocks for a given numerology in bandwidth part on a given carrier.
  • a UE can be configured with up to four bandwidth parts in the downlink with a single downlink bandwidth part being active at a given time.
  • the UE is not expected to receive PDSCH, PDCCH, or CSI-RS (except for RRM) outside an active bandwidth part.
  • a UE can be configured with up to four bandwidth parts in the uplink with a single uplink bandwidth part being active at a given time. If a UE is configured with a supplementary uplink, the UE can in addition be configured with up to four bandwidth parts in the supplementary uplink with a single supplementary uplink bandwidth part being active at a given time.
  • the UE shall not transmit PUSCH or PUCCH outside an active bandwidth part. For an active cell, the UE shall not transmit SRS outside an active bandwidth part.
  • FIG. 10 shows an example of bandwidth part (BWP) configurations to which implementations of the present disclosure is applied.
  • BWP bandwidth part
  • BWP consists of a group of contiguous physical resource blocks (PRBs).
  • the bandwidth (BW) of BWP cannot exceed the configured component carrier (CC) BW for the UE.
  • the BW of the BWP must be at least as large as one synchronization signal (SS) block BW, but the BWP may or may not contain SS block.
  • SS synchronization signal
  • Each BWP is associated with a specific numerology, i.e., sub-carrier spacing (SCS) and cyclic prefix (CP) type. Therefore, the BWP is also a means to reconfigure a UE with a certain numerology.
  • SCS sub-carrier spacing
  • CP cyclic prefix
  • the network can configure multiple BWPs to a UE via radio resource control (RRC) signaling, which may overlap in frequency.
  • RRC radio resource control
  • the granularity of BWP configuration is one PRB.
  • DL and UL BWPs are configured separately and independently for paired spectrum and up to four BWPs can be configured for DL and UL each.
  • a DL BWP and a UL BWP are jointly configured as a pair and up to 4 pairs can be configured.
  • SUL Supplemental UL
  • FIG. 11 shows an example of contiguous BWPs and non-contiguous BWPs to which implementations of the present disclosure is applied
  • a UE may be configured with multiple BWPs contiguously or non-contiguously.
  • the UE measures only configured BWPs, not all BWPs that belongs to the serving cell.
  • Each configured DL BWP includes at least one control resource set (CORESET) with UE-specific search space (USS).
  • the USS is a searching space for UE to monitor possible reception of control information destined for the UE.
  • at least one of the configured DL BWPs includes one CORESET with common search space (CSS).
  • the CSS is a searching space for UE to monitor possible reception of control information common for all UEs or destined for the particular UE. If the CORESET of an active DL BWP is not configured with CSS, the UE is not required to monitor it.
  • UEs are expected to receive and transmit only within the frequency range configured for the active BWPs with the associated numerologies. However, there are exceptions.
  • a UE may perform Radio Resource Management (RRM) measurement or transmit sounding reference signal (SRS) outside of its active BWP via measurement gap.
  • RRM Radio Resource Management
  • SRS sounding reference signal
  • FIG. 12 shows an example of multiple BWPs to which implementations of the present disclosure is applied.
  • 3 BWPs may be configured.
  • the first BWP may span 40 MHz band, and a subcarrier spacing of 15 kHz may be applied.
  • the second BWP may span 10 MHz band, and a subcarrier spacing of 15 kHz may be applied.
  • the third BWP may span 20 MHz band and a subcarrier spacing of 60 kHz may be applied.
  • the UE may configure at least one BWP among the 3 BWPs as an active BWP, and may perform UL and/or DL data communication via the active BWP.
  • the BWP is also a tool to switch the operating numerology of a UE.
  • the numerology of the DL BWP configuration is used at least for the Physical Downlink Control Channel (PDCCH), Physical Downlink Shared Channel (PDSCH) and corresponding demodulation RS (DMRS).
  • the numerology of the UL BWP configuration is used at least for the Physical Uplink Control Channel (PUCCH), Physical Uplink Shared Channel (PUSCH) and corresponding DMRS.
  • PUCCH Physical Downlink Control Channel
  • PUSCH Physical Uplink Shared Channel
  • DMRS demodulation RS
  • the receive and transmit bandwidth of a UE need not be as large as the bandwidth of the cell and can be adjusted: the width can be ordered to change (e.g. to shrink during period of low activity to save power); the location can move in the frequency domain (e.g. to increase scheduling flexibility); and the subcarrier spacing can be ordered to change (e.g. to allow different services).
  • a subset of the total cell bandwidth of a cell is referred to as a Bandwidth Part (BWP) and BA is achieved by configuring the UE with BWP(s) and telling the UE which of the configured BWPs is currently the active one.
  • BWP Bandwidth Part
  • a new state may be supported in NR.
  • the new state may be referred as a deactivated state or a dormant state.
  • the new state may be called as a specific state or a special state, in the present disclosure.
  • the UE may not perform the PDCCH monitoring for all cells belonging to the cell group for power saving. If UE keeps performing the measurements according to the configuration from a cell group while the cell group is in the new state (for example, the deactivated state or the dormant state), the UE may need to spend lots of power for the measurement. Then, it may decrease the gain of dormant cell group. On the contrary, if UE doesn't perform the measurement for the cell group in dormant state, the UE may keep the bad serving cell even after the serving cell quality becomes worse than a threshold.
  • the serving cell cannot be used for data reception/transmission, and it may cause that the UE cannot achieve the sufficient user throughput when the corresponding cell group becomes normal state from the new state (for example, a deactivated state or a dormant state).
  • a wireless device may be referred to as a user equipment (UE).
  • UE user equipment
  • FIG. 13 shows an example of a method for performing measurement in a deactivated state or a dormant state in a wireless communication system, according to some embodiments of the present disclosure.
  • FIG. 13 shows an example of a method performed by a wireless device in a wireless communication system.
  • a wireless device may receive, from a cell group, a measurement configuration including 1) at least one measurement object, and 2) an information informing whether to perform measurement on the at least one measurement object in a specific state.
  • the specific state may be a new state (for example, a dormant state or a deactivated state), as described above.
  • the specific state may be a deactivated state where a primary cell of the cell group is deactivated.
  • the specific state may be a dormant state where a dormant Bandwidth Part (BWP) for a primary cell of the cell group is activated.
  • BWP dormant Bandwidth Part
  • the dormant BWP for the primary cell of the cell group may be activated (i) by an indication via a PDCCH, (ii) by using a BWP Inactivity Timer, (iii) by a Radio Resource Control (RRC) signalling, or (iv) a signal on a Media Access Control (MAC) layer.
  • RRC Radio Resource Control
  • MAC Media Access Control
  • the at least one measurement object may include frequency with subcarrier spacing 15 kHz.
  • a wireless device may enter the specific state.
  • Physical Downlink Control Channel (PDCCH) monitoring may not be performed for all cells belonging to the cell group while in the specific state.
  • PDCCH Physical Downlink Control Channel
  • a wireless device may establish a Carrier Aggregation (CA) or Dual Connectivity (DC) with multiple cell groups.
  • CA Carrier Aggregation
  • DC Dual Connectivity
  • the multiple cell groups may include a primary cell group and a secondary cell group.
  • the wireless device may enter the specific state, when one cell group among the multiple cell groups enters into the specific state (for example, the deactivated state or the dormant state). For example, the wireless device may consider to be entered into the specific state, when only the secondary cell group may be in the specific state.
  • the wireless device may receive, from a network, a signal informing that the secondary cell group is in the specific state or enters into the specific state.
  • the wireless device may enter the specific state based on the received signal.
  • the wireless device may receive the signal informing that the secondary cell group is in the specific state (or enters into the specific state) from the primary cell group or the secondary cell group.
  • the signal may be a command for the wireless device to enter the specific state.
  • the network may inform the wireless device that the certain cell group is in or enters the deactivated state or the dormant state.
  • the wireless device may enter the specific state corresponding to the certain cell group.
  • the wireless device may perform PDCCH monitoring for at least one cell included in other cell groups except the certain cell group.
  • the wireless device when the wireless device enters the specific state, it may not be necessary that all cell groups are in the specific state. When only one cell group for the CA or DC is in or enters the specific state, the wireless device may consider to be in or enter the specific state.
  • a wireless device may determine whether to perform measurement on the at least one measurement object in the specific state based on the received information.
  • the wireless device may perform the measurement based on the determination while in the specific state.
  • a wireless device may leave the specific state and enter a normal state.
  • PDCCH monitoring may be performed for at least one cell included in the cell group while in the normal state.
  • a wireless device may perform measurement on all of the measurement object included in the measurement configuration while in the normal state.
  • the specific state may be a deactivated state.
  • the primary cell of the cell group may be (re)activated in the normal state.
  • the specific state may be a dormant state.
  • an active BWP which is different from a dormant BWP, for a primary cell of the cell group may be activated in the normal state.
  • the measurement configuration may include a measurement indication configured only for a certain measurement object to be measured in the specific state.
  • the measurement configuration may include 1) a first measurement object with a first measurement indication, 2) a second measurement object with a second measurement indication, and 3) a third measurement object without a third measurement indication.
  • a wireless device may perform measurement on the first measurement object and the second measurement object while in the specific state, based on the first measurement indication and the second measurement indication. In addition, a wireless device may skip to perform measurement on the third measurement object.
  • the wireless device may be in communication with at least one of a user equipment, a network, or an autonomous vehicle other than the wireless device.
  • FIG. 14 shows an example of a method for performing measurement in a deactivated state or a dormant state in a wireless communication system, according to some embodiments of the present disclosure.
  • UE when a cell group is in dormant state, may perform the measurement based on an indication for a measurement objects (for example, frequency or cell) configured by the cell group.
  • the indication may indicate whether to measure the corresponding measurement object when the cell group that configures the measurement object is in a dormant state or a deactivated state.
  • the indication can be configured per cell/per frequency or per measurement object.
  • the UE may perform the measurement when the corresponding cell group is in dormant state.
  • the UE may not perform the measurement when the corresponding cell group is in dormant state, but may perform the measurement when the corresponding cell group is not in dormant state.
  • the UE when the dormant downlink BWP of SpCell, i.e. PCell or PSCell, is activated, the UE may consider the corresponding cell group is in a dormant state or a deactivated state. For example, if the dormant downlink BWP is activated for PSCell, the UE may consider the secondary cell group is in a dormant state or a deactivated state.
  • the downlink BWP which is not configured with PDCCH may be a dormant downlink BWP.
  • the dormant downlink BWP may be at least one BWP among configured multiple BWPs (for example, four BWPs).
  • the dormant downlink BWP may be pre-configured.
  • the dormant downlink BWP may be activated by the BWP switching, which is controlled by the PDCCH indicating a downlink assignment or an uplink grant, by the bwp - InactivityTimer , by RRC signalling, or by the MAC entity itself upon initiation of Random Access procedure.
  • the UE Upon activation of the dormant bandwidth part, the UE does not need to monitor PDCCH for the corresponding cell.
  • a UE may receive the measurement configuration from a cell group.
  • the UE may receive the measurement configuration from secondary cell group.
  • the measurement configuration may include two measurement objects as follows:
  • the first measurement object indicates frequency A with subcarrier spacing 15 kHz.
  • the measurement indication is configured.
  • the second measurement object indicates frequency B with subcarrier spacing 15 kHz.
  • the measurement indication is not configured.
  • the measurement indication may indicate whether to measure the corresponding measurement object when the cell group that configures the measurement object is in a dormant state or a deactivated state.
  • the measurement indication may be configured only for the first measurement object, i.e. frequency A.
  • UE may performs the measurement for frequency A and frequency B in normal state.
  • a UE may enter a dormant state or a deactivated state.
  • the dormant BWP of the PSCell may be activated and the secondary cell group may become dormant cell group.
  • the secondary cell group may become a deactivated cell group.
  • a UE may determine whether to perform the measurement for measurement objects configured by the dormant cell group or the deactivated cell group (for example, the cell group in the dormant state or the deactivated state) based on the measurement indication.
  • a UE may perform the measurement based on the determination.
  • the UE While the secondary cell group is in a dormant state or a deactivated state, the UE performs the measurement only for the frequency A. That is, the UE doesn't perform the measurement for frequency B indicated by the second measurement object. Since the measurement indication is only configured for the first measurement object (i.e., frequency A), but the measurement indication is not configured for the second measurement object (i.e., frequency B).
  • a UE may leave the dormant state or the deactivated state.
  • the non-dormant BWP of the PSCell may be activated and the secondary cell group may not be dormant cell group any more.
  • the secondary cell group may not be deactivated cell group any more.
  • a UE may perform the measurement according to the measurement configuration.
  • UE may perform the measurement for all measurement objects configured by the secondary cell group.
  • a wireless device may receive, on a cell group, a measurement configuration including an indication indicating whether to measure a measurement object in a dormant state or a deactivated state.
  • a wireless device may activate a dormant downlink BWP for the cell group upon which the cell group is in the dormant state or the deactivated state.
  • a wireless device may determine whether to measure the measurement object in the dormant state or the deactivated state based on the indication.
  • steps shown in the example of FIGS. 13 and 14 may not be essential steps and may be omitted.
  • steps other than the steps shown in FIGS. 13 and 14 may be added, and the order of the steps may vary. Some of the above steps may have their own technical meaning.
  • the apparatus may be a wireless device (100 or 200) in FIGS. 2, 3, and 5.
  • a wireless device may perform methods described in FIGS. 13 and 14.
  • the detailed description overlapping with the above-described contents could be simplified or omitted.
  • a wireless device 100 may include a processor 102, a memory 104, and a transceiver 106.
  • the processor 102 may be configured to be coupled operably with the memory 104 and the transceiver 106.
  • the processor 102 may be configured to control the transceiver 106 to receive, from a cell group, a measurement configuration including 1) at least one measurement object, and 2) an information informing whether to perform measurement on the at least one measurement object in a specific state.
  • the processor 102 may be configured to enter the specific state. Physical Downlink Control Channel (PDCCH) monitoring may not be performed for all cells belonging to the cell group while in the specific state.
  • the processor 102 may be configured to determine whether to perform measurement on the at least one measurement object in the specific state based on the received information.
  • PDCH Physical Downlink Control Channel
  • the specific state may be a deactivated state where a primary cell of the cell group is deactivated.
  • the specific state may be a dormant state where a dormant Bandwidth Part (BWP) for a primary cell of the cell group is activated.
  • BWP Bandwidth Part
  • the dormant BWP for the primary cell of the cell group may be activated (i) by an indication via a PDCCH, (ii) by using a BWP Inactivity Timer, (iii) by a Radio Resource Control (RRC) signalling, or (iv) a signal on a Media Access Control (MAC) layer.
  • RRC Radio Resource Control
  • the at least one measurement object may include frequency with subcarrier spacing 15 kHz.
  • the processor 102 may be configured to perform the measurement based on the determination while in the specific state.
  • the processor 102 may be configured to leave the specific state and enter a normal state.
  • PDCCH monitoring may be performed for at least one cell included in the cell group while in the normal state.
  • the processor 102 may be configured to perform measurement on all of the measurement object included in the measurement configuration while in the normal state.
  • a primary cell of cell group may be activated in the normal state.
  • an active BWP which is different from a dormant BWP, for a primary cell of the cell group may be activated in the normal state.
  • the measurement configuration may include a measurement indication configured only for a certain measurement object to be measured in the specific state.
  • the measurement configuration may include 1) a first measurement object with a first measurement indication, 2) a second measurement object with a second measurement indication, and 3) a third measurement object without a third measurement indication.
  • the processor 102 may be configured to perform measurement on the first measurement object and the second measurement object while in the specific state, based on the first measurement indication and the second measurement indication.
  • the processor 102 may be configured to skip to perform measurement on the third measurement object.
  • the processor 102 may be configured to be in communication with at least one of a user equipment, a network, or an autonomous vehicle other than the wireless device.
  • the processor may be configured to control the wireless device to receive, from a cell group, a measurement configuration including 1) at least one measurement object, and 2) an information informing whether to perform measurement on the at least one measurement object in a specific state.
  • the processor may be configured to control the wireless device to enter the specific state. Physical Downlink Control Channel (PDCCH) monitoring may not be performed for all cells belonging to the cell group while in the specific state.
  • the processor may be configured to control the wireless device to determine whether to perform measurement on the at least one measurement object in the specific state based on the received information.
  • PDCH Physical Downlink Control Channel
  • the specific state may be a deactivated state where a primary cell of the cell group is deactivated.
  • the specific state may be a dormant state where a dormant Bandwidth Part (BWP) for a primary cell of the cell group is activated.
  • BWP Bandwidth Part
  • the dormant BWP for the primary cell of the cell group may be activated (i) by an indication via a PDCCH, (ii) by using a BWP Inactivity Timer, (iii) by a Radio Resource Control (RRC) signalling, or (iv) a signal on a Media Access Control (MAC) layer.
  • RRC Radio Resource Control
  • the at least one measurement object may include frequency with subcarrier spacing 15 kHz.
  • the processor may be configured to control the wireless device to perform the measurement based on the determination while in the specific state.
  • the processor may be configured to control the wireless device to leave the specific state and enter a normal state.
  • PDCCH monitoring may be performed for at least one cell included in the cell group while in the normal state.
  • the processor may be configured to control the wireless device to perform measurement on all of the measurement object included in the measurement configuration while in the normal state.
  • a primary cell of the cell group may be activated in the normal state.
  • an active BWP which is different from a dormant BWP, for a primary cell of the cell group may be activated in the normal state.
  • the measurement configuration may include a measurement indication configured only for a certain measurement object to be measured in the specific state.
  • the measurement configuration may include 1) a first measurement object with a first measurement indication, 2) a second measurement object with a second measurement indication, and 3) a third measurement object without a third measurement indication.
  • the processor may be configured to control the wireless device to perform measurement on the first measurement object and the second measurement object while in the specific state, based on the first measurement indication and the second measurement indication.
  • the processor may be configured to control the wireless device to skip to perform measurement on the third measurement object.
  • the processor may be configured to control the wireless device to be in communication with at least one of a user equipment, a network, or an autonomous vehicle other than the wireless device.
  • non-transitory computer-readable medium has stored thereon a plurality of instructions for performing measurement in a deactivated state or a dormant state in a wireless communication system, according to some embodiments of the present disclosure, will be described.
  • the technical features of the present disclosure could be embodied directly in hardware, in a software executed by a processor, or in a combination of the two.
  • a method performed by a wireless device in a wireless communication may be implemented in hardware, software, firmware, or any combination thereof.
  • a software may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other storage medium.
  • storage medium is coupled to the processor such that the processor can read information from the storage medium.
  • the storage medium may be integral to the processor.
  • the processor and the storage medium may reside in an ASIC.
  • the processor and the storage medium may reside as discrete components.
  • the computer-readable medium may include a tangible and non-transitory computer-readable storage medium.
  • non-transitory computer-readable media may include random access memory (RAM) such as synchronous dynamic random access memory (SDRAM), read-only memory (ROM), non-volatile random access memory (NVRAM), electrically erasable programmable read-only memory (EEPROM), FLASH memory, magnetic or optical data storage media, or any other medium that can be used to store instructions or data structures.
  • RAM random access memory
  • SDRAM synchronous dynamic random access memory
  • ROM read-only memory
  • NVRAM non-volatile random access memory
  • EEPROM electrically erasable programmable read-only memory
  • FLASH memory magnetic or optical data storage media, or any other medium that can be used to store instructions or data structures.
  • Non-transitory computer-readable media may also include combinations of the above.
  • the method described herein may be realized at least in part by a computer-readable communication medium that carries or communicates code in the form of instructions or data structures and that can be accessed, read, and/or executed by a computer.
  • a non-transitory computer-readable medium has stored thereon a plurality of instructions.
  • the stored a plurality of instructions may be executed by a processor of a wireless device.
  • the stored a plurality of instructions may cause the wireless device to receive, from a cell group, a measurement configuration including 1) at least one measurement object, and 2) an information informing whether to perform measurement on the at least one measurement object in a specific state.
  • the stored a plurality of instructions may cause the wireless device to enter the specific state. Physical Downlink Control Channel (PDCCH) monitoring may not be performed for all cells belonging to the cell group while in the specific state.
  • the stored a plurality of instructions may cause the wireless device to determine whether to perform measurement on the at least one measurement object in the specific state based on the received information.
  • PDCH Physical Downlink Control Channel
  • the specific state may be a deactivated state where a primary cell of the cell group is deactivated.
  • the specific state may be a dormant state where a dormant Bandwidth Part (BWP) for a primary cell of the cell group is activated.
  • BWP Bandwidth Part
  • the dormant BWP for the primary cell of the cell group may be activated (i) by an indication via a PDCCH, (ii) by using a BWP Inactivity Timer, (iii) by a Radio Resource Control (RRC) signalling, or (iv) a signal on a Media Access Control (MAC) layer.
  • RRC Radio Resource Control
  • the at least one measurement object may include frequency with subcarrier spacing 15 kHz.
  • the stored a plurality of instructions may cause the wireless device to perform the measurement based on the determination while in the specific state.
  • the stored a plurality of instructions may cause the wireless device to leave the specific state and enter a normal state.
  • PDCCH monitoring may be performed for at least one cell included in the cell group while in the normal state.
  • the stored a plurality of instructions may cause the wireless device to perform measurement on all of the measurement object included in the measurement configuration while in the normal state.
  • a primary cell of the cell group may be activated in the normal state.
  • an active BWP which is different from a dormant BWP, for a primary cell of the cell group may be activated in the normal state.
  • the measurement configuration may include a measurement indication configured only for a certain measurement object to be measured in the specific state.
  • the measurement configuration may include 1) a first measurement object with a first measurement indication, 2) a second measurement object with a second measurement indication, and 3) a third measurement object without a third measurement indication.
  • the stored a plurality of instructions may cause the wireless device to perform measurement on the first measurement object and the second measurement object while in the specific state, based on the first measurement indication and the second measurement indication.
  • the stored a plurality of instructions may cause the wireless device to skip to perform measurement on the third measurement object.
  • the stored a plurality of instructions may cause the wireless device to be in communication with at least one of a user equipment, a network, or an autonomous vehicle other than the wireless device.
  • BS base station
  • the BS may transmit, to a wireless device, a measurement configuration for a cell group including 1) at least one measurement object, and 2) an information informing whether to perform measurement on the at least one measurement object in a specific state.
  • Physical Downlink Control Channel (PDCCH) monitoring may not be performed, by the wireless device, for all cells belonging to the cell group while in the specific state.
  • the BS may transmit, to the wireless device, a signal informing that the cell group is in or enters into the specific state.
  • PDCCH Physical Downlink Control Channel
  • BS base station
  • the BS may include a transceiver, a memory, and a processor operatively coupled to the transceiver and the memory.
  • the processor may be configured to control the transceiver to transmit, to a wireless device, a measurement configuration for a cell group including 1) at least one measurement object, and 2) an information informing whether to perform measurement on the at least one measurement object in a specific state.
  • Physical Downlink Control Channel (PDCCH) monitoring may not be performed, by the wireless device, for all cells belonging to the cell group while in the specific state.
  • the processor may be configured to control the transceiver to transmit, to the wireless device, a signal informing that the cell group is in or enters into the specific state.
  • PDCCH Physical Downlink Control Channel
  • the present disclosure can have various advantageous effects.
  • a wireless device could minimize the power consumption for measurement in a new state (for example, a deactivated state or a dormant state).
  • a wireless device may efficiently perform measurement when a cell group becomes the dormant state, by determining whether to perform the measurement for the configured measurement object based on the measurement indication.
  • a wireless device may not perform measurement on all measurement objects in the new state and only perform measurement on a part of the measurement objects in the new state, the wireless device could reduce the power consumption for measurement in the new state.
  • a wireless communication system could efficiently support measurement in a new state (for example, a deactivated state or a dormant state).
  • a network may not need to re-configure the measurement object whenever the state of a cell group is changed to reduce the power consumption for measurements.

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Abstract

Un procédé et un appareil permettant d'effectuer une mesure dans un état désactivé ou dans un état dormant dans un système de communication sans fil sont divulgués. Un dispositif sans fil reçoit, en provenance d'un groupe de cellules, une configuration de mesure comprenant 1) au moins un objet de mesure, et 2) des informations indiquant s'il faut effectuer une mesure sur l'au moins un objet de mesure dans un état spécifique. Un dispositif sans fil entre dans l'état spécifique, une surveillance de canal de commande de liaison descendante physique (PDCCH) n'étant pas effectuée pour toutes les cellules appartenant au groupe de cellules pendant qu'elles sont dans l'état spécifique. Un dispositif sans fil détermine s'il faut effectuer une mesure sur l'au moins un objet de mesure dans l'état spécifique sur la base des informations reçues.
PCT/KR2021/013310 2020-10-20 2021-09-29 Procédé et appareil permettant d'effectuer une mesure dans un état désactivé ou dans un état dormant dans un système de communication sans fil WO2022085975A1 (fr)

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KR1020237010156A KR20230091864A (ko) 2020-10-20 2021-09-29 무선 통신 시스템에서 비활성화 상태 또는 휴면 상태에서 측정 수행을 위한 방법 및 장치
EP21883047.9A EP4233399A1 (fr) 2020-10-20 2021-09-29 Procédé et appareil permettant d'effectuer une mesure dans un état désactivé ou dans un état dormant dans un système de communication sans fil

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WO2024044431A1 (fr) * 2022-08-23 2024-02-29 Qualcomm Incorporated Activité de mesure d'interférence de liaison croisée pendant une période d'inactivité d'entité de réseau

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EP3706458A1 (fr) * 2017-11-01 2020-09-09 NTT DoCoMo, Inc. Équipement d'utilisateur, et procédé de communication sans fil
US20200313833A1 (en) * 2019-03-28 2020-10-01 Yunjung Yi Cross-Carrier Scheduling Activation for a Dormant Cell
WO2020197460A1 (fr) * 2019-03-28 2020-10-01 Telefonaktiebolaget Lm Ericsson (Publ) Gestion de configurations de mesure inactive/au repos et de mesures inactives/au repos lors d'une resélection de cellule inter-rat
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US20170013490A1 (en) * 2014-03-14 2017-01-12 Nokia Solutions And Networks Oy Dormant Cell RRM Measurement Reporting
EP3706458A1 (fr) * 2017-11-01 2020-09-09 NTT DoCoMo, Inc. Équipement d'utilisateur, et procédé de communication sans fil
US20200313833A1 (en) * 2019-03-28 2020-10-01 Yunjung Yi Cross-Carrier Scheduling Activation for a Dormant Cell
WO2020197460A1 (fr) * 2019-03-28 2020-10-01 Telefonaktiebolaget Lm Ericsson (Publ) Gestion de configurations de mesure inactive/au repos et de mesures inactives/au repos lors d'une resélection de cellule inter-rat
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Publication number Priority date Publication date Assignee Title
WO2024044431A1 (fr) * 2022-08-23 2024-02-29 Qualcomm Incorporated Activité de mesure d'interférence de liaison croisée pendant une période d'inactivité d'entité de réseau

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