EP4275399A1 - Procédé et appareil d'acquisition d'une configuration de tranche de réseau dans un système de communication sans fil - Google Patents

Procédé et appareil d'acquisition d'une configuration de tranche de réseau dans un système de communication sans fil

Info

Publication number
EP4275399A1
EP4275399A1 EP22736913.9A EP22736913A EP4275399A1 EP 4275399 A1 EP4275399 A1 EP 4275399A1 EP 22736913 A EP22736913 A EP 22736913A EP 4275399 A1 EP4275399 A1 EP 4275399A1
Authority
EP
European Patent Office
Prior art keywords
network slice
wireless device
configuration
information
tracking area
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22736913.9A
Other languages
German (de)
English (en)
Inventor
Hyunjung CHOE
Sunghoon Jung
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Publication of EP4275399A1 publication Critical patent/EP4275399A1/fr
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/03—Protecting confidentiality, e.g. by encryption
    • H04W12/037—Protecting confidentiality, e.g. by encryption of the control plane, e.g. signalling traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/04—Key management, e.g. using generic bootstrapping architecture [GBA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/60—Context-dependent security
    • H04W12/63—Location-dependent; Proximity-dependent
    • H04W12/64—Location-dependent; Proximity-dependent using geofenced areas
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/14—Access restriction or access information delivery, e.g. discovery data delivery using user query or user detection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer

Definitions

  • the present disclosure relates to a method and apparatus for acquiring network slice configuration 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.
  • a radio frequency may be associated with a particular network slice.
  • a particular service associated with the particular network slice may be provided via the associated radio frequency.
  • slice related information for example, slice related cell (re-)selection information
  • slice related information may need to be broadcast.
  • many network operators have concerns about broadcasting their network slice information.
  • One optional solution to solve network operators' concerns is broadcasting slice related information in a secured manner (that is, ciphered manner) and delivering the decoding rule (that is, key) in a dedicated signalling after security activation.
  • posSIBs may be broadcast in cipher and the key for decoding the posSIBs may be broadcast in Registration Accept message.
  • slice related cell (re-)selection information cannot be used until the key is delivered via NAS signalling in RRC_CONNECTED, while cell (re-)selection needs to be quickly completed in RRC_IDLE/RRC_INACTIVE.
  • a method performed by a wireless device in a wireless communication system receives, from a cell in a tracking area, an encoded network slice configuration via system information.
  • a wireless device determines that decoding information for the encoded network slice configuration is not obtained.
  • a wireless device transmits, to a network, a UE configuration update request message for the decoding information.
  • a wireless device receives, from the network, a UE configuration update response message including the decoding information.
  • a wireless device performs mobility based on the encoded network slice configuration by using the decoding information.
  • an apparatus for implementing the above method is provided.
  • the present disclosure can have various advantageous effects.
  • a wireless device could efficiently acquire network slice information.
  • a wireless device could provide service continuity or reduce delay to provide services.
  • a wireless device could by proactively request network update after idle-mode mobility. Therefore, the wireless device could be able to find the best cell for service continuity using the updated slice configuration.
  • a wireless device could reduce mobility delay, by directly requesting decoding information (for example, key or mapping information) of the network slice configuration used in the mobility.
  • decoding information for example, key or mapping information
  • a wireless communication system could efficiently provide the network slice information in a ciphered manner.
  • 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 AMF selection to which implementations of the present disclosure is applied.
  • FIG. 11 shows an example scenario for explaining some embodiments of the present disclosure.
  • FIG. 12 shows an example of a method for acquiring network slice configuration in a wireless communication system, according to some embodiments of the present disclosure.
  • FIG. 13 shows an example of a proactive method for cell (re-)selection using network configuration information, 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 control information
  • PDCCH control information
  • PDCCH control information
  • 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.
  • Mobility and periodic registration update initiation is described. Section 5.5.1.3.2 of 3GPP TS 24.501 v17.1.0 may be referred.
  • the UE in state 5GMM-REGISTERED shall initiate the registration procedure for mobility and periodic registration update by sending a REGISTRATION REQUEST message to the AMF,
  • a change in the eDRX usage conditions at the UE can include e.g. a change in the UE configuration, a change in requirements from upper layers or the battery running low at the UE.
  • the REGISTRATION ACCEPT message is sent by the AMF to the UE.
  • content of the REGISTRATION ACCEPT message may include a Ciphering key data as an Information Element.
  • This IE (that is, Ciphering key data) is included if the network needs to send ciphering key data to the UE for ciphered broadcast assistance data.
  • the CONFIGURATION UPDATE COMMAND message is sent by the AMF to the UE.
  • Section 16.3 of 3GPP TS 38.300 v16.4.0 may be referred.
  • a network slice always consists of a RAN part and a CN part.
  • the support of network slicing relies on the principle that traffic for different slices is handled by different PDU sessions.
  • Network can realise the different network slices by scheduling and also by providing different L1/L2 configurations.
  • NSSAI Network Slice Selection Assistance Information
  • S-NSSAI Single NSSAI
  • SD Slice Differentiator
  • the list includes at most 8 S-NSSAI(s).
  • the UE provides NSSAI (Network Slice Selection Assistance Information) for network slice selection in RRCSetupComplete , if it has been provided by NAS. While the network can support large number of slices (hundreds), the UE need not support more than 8 slices simultaneously. A BL UE or a NB-IoT UE supports a maximum of 8 slices simultaneously.
  • NSSAI Network Slice Selection Assistance Information
  • Network Slicing is a concept to allow differentiated treatment depending on each customer requirements. With slicing, it is possible for Mobile Network Operators (MNO) to consider customers as belonging to different tenant types with each having different service requirements that govern in terms of what slice types each tenant is eligible to use based on Service Level Agreement (SLA) and subscriptions.
  • MNO Mobile Network Operators
  • - NG-RAN supports a differentiated handling of traffic for different network slices which have been pre-configured. How NG-RAN supports the slice enabling in terms of NG-RAN functions (i.e. the set of network functions that comprise each slice) is implementation dependent.
  • - NG-RAN supports the selection of the RAN part of the network slice, by NSSAI provided by the UE or the 5GC which unambiguously identifies one or more of the pre-configured network slices in the PLMN.
  • - NG-RAN supports policy enforcement between slices as per service level agreements. It should be possible for a single NG-RAN node to support multiple slices. The NG-RAN should be free to apply the best RRM policy for the SLA in place to each supported slice.
  • - NG-RAN supports QoS differentiation within a slice.
  • the UE may provide NSSAI to support the selection of an AMF. If available, NG-RAN uses this information for routing the initial NAS to an AMF. If the NG-RAN is unable to select an AMF using this information or the UE does not provide any such information the NG-RAN sends the NAS signalling to one of the default AMFs.
  • the UE For subsequent accesses, the UE provides a Temp ID, which is assigned to the UE by the 5GC, to enable the NG-RAN to route the NAS message to the appropriate AMF as long as the Temp ID is valid (NG-RAN is aware of and can reach the AMF which is associated with the Temp ID). Otherwise, the methods for initial attach applies.
  • the NG-RAN supports resource isolation between slices.
  • NG-RAN resource isolation may be achieved by means of RRM policies and protection mechanisms that should avoid that shortage of shared resources in one slice breaks the service level agreement for another slice. It should be possible to fully dedicate NG-RAN resources to a certain slice. How NG-RAN supports resource isolation is implementation dependent.
  • operator-defined access categories can be used to enable differentiated handling for different slices.
  • NG-RAN may broadcast barring control information (i.e. a list of barring parameters associated with operator-defined access categories) to minimize the impact of congested slices.
  • Some slices may be available only in part of the network.
  • the NG-RAN supported S-NSSAI(s) is configured by OAM. Awareness in the NG-RAN of the slices supported in the cells of its neighbours may be beneficial for inter-frequency mobility in connected mode. It is assumed that the slice availability does not change within the UE's registration area.
  • the NG-RAN and the 5GC are responsible to handle a service request for a slice that may or may not be available in a given area. Admission or rejection of access to a slice may depend by factors such as support for the slice, availability of resources, support of the requested service by NG-RAN.
  • a UE In case a UE is associated with multiple slices simultaneously, only one signalling connection is maintained and for intra-frequency cell reselection, the UE always tries to camp on the best cell. For inter-frequency cell reselection, dedicated priorities can be used to control the frequency on which the UE camps.
  • - Slice awareness in NG-RAN is introduced at PDU session level, by indicating the S-NSSAI corresponding to the PDU Session, in all signalling containing PDU session resource information.
  • the NG-RAN may be allowed to apply some provisional/local policies, based on awareness of which slice the UE is requesting access to. During the initial context setup, the NG-RAN is informed of the slice for which resources are being requested.
  • NG-RAN selects AMF based on a Temp ID or NSSAI provided by the UE over RRC.
  • the mechanisms used in the RRC protocol are described in the next clause.
  • Table 5 shows AMF selection based on Temp ID and NSSAI.
  • the UE When triggered by the upper layer, the UE conveys the NSSAI over RRC in the format explicitly indicated by the upper layer.
  • Resource isolation enables specialized customization and avoids one slice affecting another slice.
  • Hardware/software resource isolation is up to implementation.
  • Each slice may be assigned with either shared or dedicated radio resource up to RRM implementation and SLA.
  • - NG-RAN is configured with a set of different configurations for different network slices by OAM;
  • NG-RAN receives relevant information indicating which of the configurations applies for this specific network slice.
  • RAN selects the AMF based on a Temp ID or NSSAI provided by the UE.
  • FIG. 10 shows an example of AMF selection to which implementations of the present disclosure is applied.
  • gNB may transmit, to AMF1, an NG SETUP REQUEST message including list of S-NSSAI(s) supported per TA.
  • gNB may receive, from AMF1 and AMF2, an NG SETUP REQUEST including list of S-NSSAI(s) supported per PLMN.
  • gNB may transmit, to AMF2, an NG SETUP REQUEST message including list of S-NSSAI(s) supported per TA.
  • gNB may receive, from AMF2, an NG SETUP REQUEST including list of S-NSSAI(s) supported per PLMN.
  • gNB may receive, from UE, an RRC (Connection) Setup Complete message including Temp ID (optional) and NSSAI (optional).
  • gNB may identify slice policies, identify CN node supporting concerned slice(s), or select default CN node.
  • step S1007 gNB may transmit, to AMF1, an INITIAL UE message.
  • step S1008 gNB may validate UE rights and slice(s) availability.
  • the NG-RAN uses the NSSAI provided by the UE at RRC connection establishment to select the appropriate AMF (the information is provided after MSG3 of the random access procedure). If such information is also not available, the NG-RAN routes the UE to one of the configured default AMF(s).
  • the NG-RAN uses the list of supported S-NSSAI(s) previously received in the NG Setup Response message when selecting the AMF with the NSSAI. This list may be updated via the AMF Configuration Update message.
  • Section 5.2.2.3 of 3GPP TS 38.331 v16.3.1 may be referred.
  • PDCCH monitoring occasion(s) are determined according to searchSpaceOtherSystemInformation . If searchSpaceOtherSystemInformation is set to zero, PDCCH monitoring occasions for SI message reception in SI-window are same as PDCCH monitoring occasions for SIB1 where the mapping between PDCCH monitoring occasions and SSBs is specified. If searchSpaceOtherSystemInformation is not set to zero, PDCCH monitoring occasions for SI message are determined based on search space indicated by searchSpaceOtherSystemInformation . PDCCH monitoring occasions for SI message which are not overlapping with UL symbols (determined according to tdd -UL-DL- ConfigurationCommon ) are sequentially numbered from one in the SI window.
  • the actual transmitted SSBs are sequentially numbered from one in ascending order of their SSB indexes.
  • the UE assumes that, in the SI window, PDCCH for an SI message is transmitted in at least one PDCCH monitoring occasion corresponding to each transmitted SSB and thus the selection of SSB for the reception SI messages is up to UE implementation.
  • the UE shall:
  • SIB1 includes posSI - SchedulingInfo containing posSI -RequestConfigSUL and criteria to select supplementary uplink:
  • SIB1 includes posSI - SchedulingInfo containing posSI -RequestConfig and criteria to select normal uplink:
  • the UE shall:
  • UE may include on demand request for SIB and/or posSIB(s) in the same DedicatedSIBRequest message.
  • the IE SIBpos contains positioning assistance data.
  • the IE SIBpos includes assistanceDataSIB-Element and lateNonCriticalExtension, etc.
  • the assistanceDataSIB-Element is a parameter AssistanceDataSIBelement.
  • the first/leftmost bit of the first octet contains the most significant bit.
  • slice related information for example, slice related cell (re-)selection information
  • slice related information may need to be broadcast.
  • many network operators have concerns about broadcasting their network slice information.
  • One optional solution to solve network operators' concerns is broadcasting slice related information in a secured manner (that is, ciphered manner) and delivering the decoding rule (that is, key) in a dedicated signalling after security activation.
  • posSIBs may be broadcast in cipher and the key for decoding the posSIBs may be broadcast in Registration Accept message.
  • slice related cell (re-)selection information cannot be used until the key is delivered via NAS signalling in RRC_CONNECTED, while cell (re-)selection needs to be quickly completed in RRC_IDLE/RRC_INACTIVE.
  • FIG. 11 shows an example scenario for explaining some embodiments of the present disclosure.
  • a wireless device that is, UE receives available network slice information in cipher for cell selection via broadcast system information in Cell-1.
  • Cell-1 belongs to a Registration Area-1.
  • the UE receives a key to decode the ciphered network slice information via NAS signalling, where the key is available within the Registration Area-1.
  • the UE successfully decodes and stores network slice information for cell selection.
  • Cell-2 belongs to a Registration Area-2.
  • the UE receives available network slice information in cipher for cell selection via broadcast system information in Cell-2.
  • the UE cannot decode the network slice information received in Cell-2, because the key to decode the ciphered network slice information received in Cell-2 is not yet received in Registration Area-2 via NAS signalling.
  • the UE receives a key to decode the ciphered network slice information during Registration procedure in Registration Area-2.
  • the UE successfully decodes and stores network slice information for cell selection.
  • the UE when the UE stays in step (6) before the key is updated, the UE cannot use valid network slice information for cell selection. It may cause delay to acquire the valid network slice information.
  • a wireless device may be referred to as a user equipment (UE).
  • UE user equipment
  • FIG. 12 shows an example of a method for acquiring network slice configuration in a wireless communication system, according to some embodiments of the present disclosure.
  • FIG. 12 shows an example of a method performed by a wireless device.
  • a wireless device may receive, from a cell in a tracking area, an encoded network slice configuration via system information.
  • the encoded network slice configuration may be ciphered by the network.
  • the decoding information in step S1202 below, may include a key for decoding the encoded network slice configuration ciphered by the network.
  • the encoded network slice configuration may be encoded through a mapping table.
  • the encoded network slice configuration includes at least one value related to at least one network slice configuration, wherein the at least one value included in the mapping table.
  • the encoded network slice configuration may include information on (1) Slice/Service Type (SST), (2) Single Network Slice Selection Assistance Information (S-NSSAI), and/or (3) service identity. That is, the network slice configuration, acquired by decoding the encoded network slice configuration, may include information on (1) SST, (2) S-NSSAI, and/or (3) service identity.
  • SST Slice/Service Type
  • S-NSSAI Single Network Slice Selection Assistance Information
  • a wireless device may determine that decoding information for the encoded network slice configuration is not obtained.
  • the decoding information may include a key for decoding the encoded network slice configuration ciphered by the network.
  • the decoding information may include the mapping table including information on one or more values mapped to one or more network slice configurations, which are available on the tracking area.
  • the mapping table may include mapping information between the one or more network slice configurations and one or more service types.
  • a wireless device may move to the current tracking area from a previous tracking area. Upon moving to the current tracking area, the wireless device may check whether the decoding information is obtained or not. In this case, the tracking area is different from the previous tracking area.
  • the wireless device may determine that the decoding information for the encoded network slice configuration is not obtained, based on that the tracking area is a new tracking area, where the wireless device has never been before.
  • a wireless device may receive, from the cell of the tracking area, an area identity related to the encoded network slice configuration.
  • a wireless device may identify the tracking area based on the area identity. For example, the wireless device may determine whether the tracking area is a new tracking area based on the received area identity.
  • a wireless device may transmit, to a network, a UE configuration update request message for the decoding information.
  • the wireless device may transmit, to a network, a UE configuration update request message for the decoding information.
  • the wireless device may transmit, to the network, the UE configuration update request message via NAS signalling or RRC signalling after AS security activation.
  • the UE configuration update request message may be an RRC signalling, which requests NAS signalling, from the network, for configuration update command.
  • the wireless device may transmit, to the cell in the tracking area, the UE configuration update request message.
  • the wireless device may transmit, to another cell in the tracking area, the UE configuration update request message.
  • the UE configuration update request message may be a Registration Request message for a Registration procedure.
  • a wireless device may receive, from the network, a UE configuration update response message including the decoding information.
  • the wireless device may receive the UE configuration update response message via a NAS signalling, an RRC signalling, or a MAC signalling.
  • the wireless device may receive, from the cell in the tracking area, the UE configuration update response message.
  • the wireless device may receive, from another cell in the tracking area, the UE configuration update response message.
  • the UE configuration update response message may be a Registration Response message.
  • a wireless device may perform mobility based on the encoded network slice configuration by using the decoding information.
  • a wireless device may decode the encoded network slice configuration by using the key included in the decoding information.
  • the wireless device may acquire a specific network slice configuration for the tracking area from the encoded network slice configuration.
  • the wireless device may perform mobility by applying the specific network slice configuration.
  • a wireless device may select a specific network slice configuration among the one or more network slice configurations based on (1) the at least one value included in the encoded network slice configuration and (2) the mapping table.
  • the wireless device may perform mobility by applying the selected specific network slice configuration.
  • the wireless device may select or reselect the cell in the tracking area based on the network slice information acquired from the encoded network slice information.
  • the wireless device may camp on the cell while in RRC_IDLE or RRC_INACTIVE.
  • the wireless device may select or reselect another cell in the tracking area based on the network slice information acquired from the encoded network slice information.
  • the wireless device may camp on another cell while in RRC_IDLE or RRC_INACTIVE.
  • the wireless device is in communication with at least one of a user equipment, a network, or an autonomous vehicle other than the wireless device.
  • the present disclosure proposes an indication for proactive operation. That is, if the stored information for mobility (for example, cell (re-)selection) is invalid, the UE may transmit an indication to the network to proactively operate based on an updated network configuration and/or network controlled operation request.
  • the indication transmitted by the UE may be to inform that the stored information for mobility is invalid and/or to request an updated network configuration or network command.
  • the network configuration information for mobility may include parameters related to, for example, (1) slice aware UE operations such as SST, SD, (2) S-NSSAI, (3) traffic information, (4) frequency associated to slice, (5) cell identity associated to slice, (6) access category, (7) access identity, (8) PLMN identity, (9) non-public network identity, etc.
  • slice aware UE operations such as SST, SD, (2) S-NSSAI
  • traffic information such as SST, SD, (2) S-NSSAI, (3) traffic information, (4) frequency associated to slice, (5) cell identity associated to slice, (6) access category, (7) access identity, (8) PLMN identity, (9) non-public network identity, etc.
  • the network configuration information may be ciphered or encoded using a mapping table (for example, in the mapping table, the encoded value '01100' maps to IOT service).
  • the UE may receive the key to decode the network configuration information via dedicated signalling after AS security activation.
  • the UE may receive the mapping information for decoding the network configuration information via dedicated signalling after AS security activation.
  • the network configuration may be preconfigured and/or transmitted to the UE via broadcast or dedicated signalling from the network.
  • FIG. 13 shows an example of a proactive method for cell (re-)selection using network configuration information, according to some embodiments of the present disclosure.
  • the UE may receive cell access information and the scheduling of other system information via SIB1.
  • the UE may receive network slice configuration (for example, sliceConfig ) which indicates network slice(s) supported in the cell in SIB1.
  • sliceConfig network slice configuration
  • the contents of network slice configuration may include, for example, SST, S-NSSAI, or service identity.
  • the UE may receive scheduling information (for example, SliceSI-SchedulingInfo ) needed for acquisition of system information related to network slice.
  • scheduling information for example, SliceSI-SchedulingInfo
  • the UE may receive slice information area identity (for example, sliceInformationAreaID ) to identify an area, which consists of one or several cells, where the network slice configuration is available.
  • sliceInformationAreaID sliceInformationAreaID
  • the UE may receive broadcast status (for example, sliceSI -BroadcastStatus is either broadcasting , notbroadcasting , dedicated ) of system information related to network slice.
  • broadcast status for example, sliceSI -BroadcastStatus is either broadcasting , notbroadcasting , dedicated
  • the UE may receive other system information related to corresponding network slice, if the network slice configuration in SIB1 includes any of configured network slice in the UE. Otherwise, the UE finds another cell.
  • the UE may send a dedicated SIB request message (that is, DedicatedSIBRequest ) to the network according to the scheduling information for system information related to network slice.
  • a dedicated SIB request message that is, DedicatedSIBRequest
  • the UE may send a dedicated SIB request message if a broadcast status of system information related to network slice is configured by the network as not broadcasting (for example, sliceSI - BroadcastStatus is notBroadcasting ).
  • the UE may acquire network slice configuration for mobility via system information and store the network slice configuration.
  • the UE may receive the network slice configuration in cipher.
  • the UE may be indicated that the network slice configuration is ciphered (that is, ciphered ).
  • the UE may receive the network slice configuration in an encoded manner (for example, an encoding value is mapped to S-NSSAI or SD).
  • the UE may be indicated that the network slice configuration is encoded (that is, encoded ).
  • the network slice configuration may include network slice(s) supported in a neighbour cell.
  • the network slice configuration may include detailed slice description for the serving cell.
  • the UE may receive slice information area identity (that is, sliceInformationAreaID ) to identify an area, which consists of one or several cells, where the network slice configuration is available.
  • sliceInformationAreaID sliceInformationAreaID
  • step S1305 the UE may determine that update of the network slice configuration is needed.
  • the UE may determine the update of the network slice configuration is needed:
  • no service that is, Configured S-NSSAI, Allowed S-NSSAI, service identity
  • no service that is, Configured S-NSSAI, Allowed S-NSSAI, service identity
  • sliceInformationAreaID if the UE is not within the area (that is, sliceInformationAreaID ) received in system information.
  • step S1306 the UE may transmit a UE Configuration Update Request message to the network.
  • the UE may transmit the UE Configuration Update Request message via NAS or RRC signalling after AS security activation.
  • the UE Configuration Update Request message may be Registration Request message during Registration procedure.
  • the UE Configuration Update Request message may be RRC signalling requesting Configuration Update Command NAS signalling from the network.
  • the UE may indicate that network slice configuration received in system information is available (that is, RAN slicing configured ).
  • the UE may indicate that unknown slice configuration exists (that is, Unknown service configuration ).
  • the UE may receive UE Configuration Update Response message from the network.
  • the UE may receive the UE Configuration Update Response message via NAS or RRC or MAC signalling.
  • the UE Configuration Update Response message may be Registration Response message.
  • the UE may receive the key to decode the network slice configuration received in system information.
  • the UE may receive a mapping rule for network slice configuration (for example, a specific value (for example, '01100') maps to a specific service (for example, 'IOT service')).
  • a mapping rule for network slice configuration for example, a specific value (for example, '01100') maps to a specific service (for example, 'IOT service')).
  • the UE may receive slice configuration (for example, S-NSSAI).
  • slice configuration for example, S-NSSAI
  • step S1308 the UE may perform mobility based on the stored network slice configuration.
  • the UE may decode the stored network slice configuration by using the key and/or the mapping rule received in step S1307.
  • the UE may perform mobility based on the decoded network slice configuration.
  • the UE may decode the network slice configuration received in step S1307 by using the stored key and/or mapping rule.
  • the UE may perform mobility based on the decoded network slice configuration.
  • the apparatus may be a wireless device (100 or 200) in FIGS. 2, 3, and 5.
  • a wireless device may perform methods described above.
  • 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 in a tracking area, an encoded network slice configuration via system information.
  • the processor 102 may be configured to determine that decoding information for the encoded network slice configuration is not obtained.
  • the processor 102 may be configured to control the transceiver 106 to transmit, to a network, a UE configuration update request message for the decoding information.
  • the processor 102 may be configured to control the transceiver 106 to receive, from the network, a UE configuration update response message including the decoding information.
  • the processor 102 may be configured to perform mobility based on the encoded network slice configuration by using the decoding information.
  • the encoded network slice configuration may be ciphered by the network.
  • the decoding information may include a key for decoding the encoded network slice configuration ciphered by the network.
  • the processor 102 may be configured to decode the encoded network slice configuration by using the key.
  • the processor 102 may be configured to acquire a specific network slice configuration for the tracking area from the encoded network slice configuration.
  • the encoded network slice configuration may include at least one value related to at least one network slice configuration.
  • the at least one value is included in a mapping table.
  • the decoding information may include the mapping table including information on one or more values mapped to one or more network slice configurations, which are available on the tracking area.
  • the mapping table may include mapping information between the one or more network slice configurations and one or more service types.
  • the processor 102 may be configured to select a specific network slice configuration among the one or more network slice configurations based on (1) the at least one value included in the encoded network slice configuration and (2) the mapping table.
  • the processor 102 may be configured to move to the tracking area from a previous tracking area.
  • the processor 102 may be configured to check whether the decoding information is obtained or not upon moving to the tracking area.
  • the tracking area may be different from the previous tracking area.
  • the decoding information for the encoded network slice configuration is not obtained, based on that the tracking area is a new tracking area for the wireless device.
  • the processor 102 may be configured to control the transceiver 106 to receive, from the cell of the tracking area, an area identity related to the encoded network slice configuration.
  • the processor 102 may be configured to identify the tracking area based on the area identity.
  • the encoded network slice configuration may include information on (1) Slice/Service Type (SST), (2) Single Network Slice Selection Assistance Information (S-NSSAI), and/or (3) service identity.
  • SST Slice/Service Type
  • S-NSSAI Single Network Slice Selection Assistance Information
  • the UE configuration update request message may be a Registration Request message for a Registration procedure.
  • the UE configuration update response message may be a Registration Response message.
  • 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 in a tracking area, an encoded network slice configuration via system information.
  • the processor may be configured to control the wireless device to determine that decoding information for the encoded network slice configuration is not obtained.
  • the processor may be configured to control the wireless device to transmit, to a network, a UE configuration update request message for the decoding information.
  • the processor may be configured to control the wireless device to receive, from the network, a UE configuration update response message including the decoding information.
  • the processor may be configured to control the wireless device to perform mobility based on the encoded network slice configuration by using the decoding information.
  • the encoded network slice configuration may be ciphered by the network.
  • the decoding information may include a key for decoding the encoded network slice configuration ciphered by the network.
  • the processor may be configured to control the wireless device to decode the encoded network slice configuration by using the key.
  • the processor may be configured to control the wireless device to acquire a specific network slice configuration for the tracking area from the encoded network slice configuration.
  • the encoded network slice configuration may include at least one value related to at least one network slice configuration.
  • the at least one value is included in a mapping table.
  • the decoding information may include the mapping table including information on one or more values mapped to one or more network slice configurations, which are available on the tracking area.
  • the mapping table may include mapping information between the one or more network slice configurations and one or more service types.
  • the processor may be configured to control the wireless device to select a specific network slice configuration among the one or more network slice configurations based on (1) the at least one value included in the encoded network slice configuration and (2) the mapping table.
  • the processor may be configured to control the wireless device to move to the tracking area from a previous tracking area.
  • the processor may be configured to control the wireless device to check whether the decoding information is obtained or not upon moving to the tracking area.
  • the tracking area may be different from the previous tracking area.
  • the decoding information for the encoded network slice configuration is not obtained, based on that the tracking area is a new tracking area for the wireless device.
  • the processor may be configured to control the wireless device to receive, from the cell of the tracking area, an area identity related to the encoded network slice configuration.
  • the processor may be configured to control the wireless device to identify the tracking area based on the area identity.
  • the encoded network slice configuration may include information on (1) Slice/Service Type (SST), (2) Single Network Slice Selection Assistance Information (S-NSSAI), and/or (3) service identity.
  • SST Slice/Service Type
  • S-NSSAI Single Network Slice Selection Assistance Information
  • the UE configuration update request message may be a Registration Request message for a Registration procedure.
  • the UE configuration update response message may be a Registration Response message.
  • 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 acquiring network slice configuration 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 in a tracking area, an encoded network slice configuration via system information.
  • the stored a plurality of instructions may cause the wireless device to determine that decoding information for the encoded network slice configuration is not obtained.
  • the stored a plurality of instructions may cause the wireless device to transmit, to a network, a UE configuration update request message for the decoding information.
  • the stored a plurality of instructions may cause the wireless device to receive, from the network, a UE configuration update response message including the decoding information.
  • the stored a plurality of instructions may cause the wireless device to perform mobility based on the encoded network slice configuration by using the decoding information.
  • the encoded network slice configuration may be ciphered by the network.
  • the decoding information may include a key for decoding the encoded network slice configuration ciphered by the network.
  • the stored a plurality of instructions may cause the wireless device to decode the encoded network slice configuration by using the key.
  • the stored a plurality of instructions may cause the wireless device to acquire a specific network slice configuration for the tracking area from the encoded network slice configuration.
  • the encoded network slice configuration may include at least one value related to at least one network slice configuration.
  • the at least one value is included in a mapping table.
  • the decoding information may include the mapping table including information on one or more values mapped to one or more network slice configurations, which are available on the tracking area.
  • the mapping table may include mapping information between the one or more network slice configurations and one or more service types.
  • the stored a plurality of instructions may cause the wireless device to select a specific network slice configuration among the one or more network slice configurations based on (1) the at least one value included in the encoded network slice configuration and (2) the mapping table.
  • the stored a plurality of instructions may cause the wireless device to move to the tracking area from a previous tracking area.
  • the stored a plurality of instructions may cause the wireless device to check whether the decoding information is obtained or not upon moving to the tracking area.
  • the tracking area may be different from the previous tracking area.
  • the decoding information for the encoded network slice configuration is not obtained, based on that the tracking area is a new tracking area for the wireless device.
  • the stored a plurality of instructions may cause the wireless device to receive, from the cell of the tracking area, an area identity related to the encoded network slice configuration.
  • the stored a plurality of instructions may cause the wireless device to identify the tracking area based on the area identity.
  • the encoded network slice configuration may include information on (1) Slice/Service Type (SST), (2) Single Network Slice Selection Assistance Information (S-NSSAI), and/or (3) service identity.
  • SST Slice/Service Type
  • S-NSSAI Single Network Slice Selection Assistance Information
  • the UE configuration update request message may be a Registration Request message for a Registration procedure.
  • the UE configuration update response message may be a Registration Response message.
  • 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, an encoded network slice configuration via system information.
  • the BS may receive, from the wireless device, a UE configuration update request message for the decoding information.
  • the BS may transmit, to the wireless device, a UE configuration update response message including the decoding information.
  • 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, an encoded network slice configuration via system information.
  • the processor may be configured to control the transceiver to receive, from the wireless device, a UE configuration update request message for the decoding information.
  • the processor may be configured to control the transceiver to transmit, to the wireless device, a UE configuration update response message including the decoding information.
  • the present disclosure can have various advantageous effects.
  • a wireless device could efficiently acquire network slice information.
  • a wireless device could provide service continuity or reduce delay to provide services.
  • a wireless device could by proactively request network update after idle-mode mobility. Therefore, the wireless device could be able to find the best cell for service continuity using the updated slice configuration.
  • a wireless device could reduce mobility delay, by directly requesting decoding information (for example, key or mapping information) of the network slice configuration used in the mobility.
  • decoding information for example, key or mapping information
  • a wireless communication system could efficiently provide the network slice information in a ciphered manner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé et un appareil d'acquisition d'une configuration de tranche de réseau dans un système de communication sans fil. Un dispositif sans fil reçoit, en provenance d'une cellule dans une zone de suivi, une configuration de tranche de réseau codée par l'intermédiaire d'informations système. Un dispositif sans fil détermine que des informations de décodage liées à la configuration de tranche de réseau codée ne sont pas obtenues. Un dispositif sans fil transmet à un réseau un message de demande de mise à jour de configuration d'UE pour les informations de décodage. Un dispositif sans fil reçoit, en provenance du réseau, un message de réponse de mise à jour de configuration d'UE comprenant les informations de décodage. Un dispositif sans fil met en oeuvre une procédure de mobilité sur la base de la configuration de tranche de réseau codée en utilisant les informations de décodage.
EP22736913.9A 2021-01-11 2022-01-10 Procédé et appareil d'acquisition d'une configuration de tranche de réseau dans un système de communication sans fil Pending EP4275399A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20210003203 2021-01-11
PCT/KR2022/000396 WO2022149936A1 (fr) 2021-01-11 2022-01-10 Procédé et appareil d'acquisition d'une configuration de tranche de réseau dans un système de communication sans fil

Publications (1)

Publication Number Publication Date
EP4275399A1 true EP4275399A1 (fr) 2023-11-15

Family

ID=82357365

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22736913.9A Pending EP4275399A1 (fr) 2021-01-11 2022-01-10 Procédé et appareil d'acquisition d'une configuration de tranche de réseau dans un système de communication sans fil

Country Status (3)

Country Link
EP (1) EP4275399A1 (fr)
KR (1) KR20230130662A (fr)
WO (1) WO2022149936A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024164333A1 (fr) * 2023-02-10 2024-08-15 北京小米移动软件有限公司 Procédé et appareil de distribution de clés, dispositif de communication, et support de stockage

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102108871B1 (ko) * 2016-11-03 2020-05-12 주식회사 케이티 네트워크 슬라이스 기반 데이터 처리 방법 및 그 장치
CN109964509B (zh) * 2016-11-18 2021-10-29 Lg 电子株式会社 在无线通信系统中选择网络节点的方法及其设备
WO2018139572A1 (fr) * 2017-01-27 2018-08-02 日本電気株式会社 Terminal de communication, dispositif de réseau central, système de communication, procédé de gestion d'informations et support lisible par ordinateur
US10820185B2 (en) * 2017-05-08 2020-10-27 Qualcomm Incorporated Mobility between areas with heterogeneous network slices

Also Published As

Publication number Publication date
KR20230130662A (ko) 2023-09-12
WO2022149936A1 (fr) 2022-07-14

Similar Documents

Publication Publication Date Title
WO2021045464A1 (fr) Procédé et appareil pour la prise en charge d'une division cu-du dans une procédure mt-edt dans un système de communication sans fil
WO2020222505A1 (fr) Reconfiguration de sdap basée sur une transition d'état dans une communication de liaison latérale
WO2021015561A1 (fr) Procédé et appareil de rapport de mesure pendant un transfert intercellulaire de pcell conditionnel dans un système de communication sans fil
WO2021029713A1 (fr) Traitement de problèmes en boucle de la mobilité conditionnelle
WO2021015560A1 (fr) Procédé et appareil de gestion de cellules secondaires lors d'un transfert conditionnel de cellules primaires dans un système de communication sans fil
EP4011169A1 (fr) Procédé et appareil pour indiquer une défaillance de liaison radio de liaison latérale dans un système de communication sans fil
WO2020222507A1 (fr) Configuration sdap pour destination dans une communication de liaison latérale
WO2021149939A1 (fr) Procédé et appareil permettant de commuter entre une monodiffusion et une multidiffusion dans un système de communication sans fil
WO2022015014A1 (fr) Procédé et appareil permettant d'effectuer une sélection de cellule ou une resélection de cellule prenant en compte une tranche de réseau dans un système de communication sans fil
WO2021071268A1 (fr) Procédé et appareil permettant de gérer une commutation de bwp basée sur une priorité dans un système de communication sans fil
WO2022240085A1 (fr) Procédé et appareil pour une resélection de cellule intra-fréquence tenant compte d'une capacité radio dans un système de communication sans fil
WO2022025558A1 (fr) Procédé et appareil de mesure dans un état de repos ou un état inactif en tenant compte d'une tranche de réseau dans un système de communication sans fil
WO2021149933A1 (fr) Commutation entre unidiffusion et multidiffusion par considération d'une expérience d'utilisateur dégradée dans un système de communication sans fil
WO2021157872A1 (fr) Procédé et appareil de transmission multi-diffusion avec séparation de cp et up dans un système de communication sans fil
WO2020222545A1 (fr) Activation rapide de groupe de cellules sur la base d'une mesure de cellule unique
WO2022149936A1 (fr) Procédé et appareil d'acquisition d'une configuration de tranche de réseau dans un système de communication sans fil
WO2022240273A1 (fr) Procédé et appareil pour déterminer un état initial d'un groupe de cellules secondaires dans un système de communication sans fil
WO2022154525A1 (fr) Procédé et appareil pour effectuer des mesures discontinues dans un système de communication sans fil
WO2021230563A1 (fr) Procédé et appareil d'héritage d'informations de système de diffusion dans un système de communication sans fil
WO2022265291A1 (fr) Procédé et appareil pour mesures rrm et surveillance drx tenant compte des restrictions de tranches de réseau dans un système de communication sans fil
WO2023068470A1 (fr) Procédé et appareil pour l'interdiction de cellule sensible à une tranche dans un système de communication sans fil
WO2023068476A1 (fr) Procédé et appareil de sélection et de resélection de cellules tenant compte des tranches dans un système de communication sans fil
WO2021141377A1 (fr) Procédé et appareil permettant de rapporter une défaillance de liaison radio dans une pluralité de parties de bande passante actives dans un système de communication sans fil
WO2024117672A1 (fr) Procédé et appareil de commutation de cellule de desserte autonome dans un système de communication sans fil
WO2024186027A1 (fr) Procédé et appareil de configuration de multidiffusion dans un système de communication sans fil

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20230606

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)