Communication related to synchronization signal

Abstract

There is provided a method for performing communication, the method performed by a UE. The method comprises: determining at least one frequency position for a SS block; and receiving, from a base station, the SS block based on the at least one frequency position.

Description

COMMUNICATION RELATED TO SYNCHRONIZATION SIGNAL

[0001] The present disclosure relates to mobile communication.

[0002] 3rd generation partnership project (3GPP) long-term evolution (LTE) is a technology for enabling high-speed packet communications. 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.

[0003] Work has started in international telecommunication union (ITU) and 3GPP to develop requirements and specifications for new radio (NR) systems. 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. Further, 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.

[0004] 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. The NR shall be inherently forward compatible.

[0005] In prior-arts, there was no sync raster for licensed bands (LBT-exempt) and un-licensed bands (LBT based) that overlap one another. Herein, LBT means Listen Before Talk operation. Conventionally, the bands for licensed operation and the bands for un-licensed operation have been occupying different frequencies and there has not been any overlap between the bands for the licensed operation and the bands for the un-licensed operation. Therefore, independent SSB raster design was applied for each band.

[0006] However, currently, new 60GHz Frequency Range (FR) 2-2 frequency range between 52.6 and 71GHz has been introduced. It is likely that bands targeted for licensed operation and un-licensed operation will overlap. There are problems that there was no way to distinguish these networks by using different locations for SSB.

[0007] SSB raster design needs to be introduced for 60GHz FR2-2 frequency range between 52.6 and 71GHz. However, 60GHz FR2-2 frequency range between 52.6 and 71GHz is very wide. Therefore, the existing 3GPP channel and SSB raster design is becoming really heavy and complex to be used by a User Equipment (UE). For example, Unlicensed band, which is already introduced in USA, has ranges from 57 to 71GHz and is 14GHz wide.

[0008] However, reuse of the existing SSB raster design would result into making initial synchronization process very complex and time consuming due to high number of SSB locations that UE should check in order to find the network. Thus, new SSB raster design to reduce search complexity and reduce time for initial synchronization procedure.

[0009] Accordingly, a disclosure of the present specification has been made in an effort to solve the aforementioned problem.

[0010] Accordingly, a disclosure of the present specification has been made in an effort to solve the aforementioned problem.

[0011] In accordance with an embodiment of the present disclosure, a disclosure of the present specification provides a method for performing communication, the method performed by a UE. The method comprises: determining at least one frequency position for a SS block; and receiving, from a base station, the SS block based on the at least one frequency position.

[0012] In accordance with an embodiment of the present disclosure, a disclosure of the present specification provides a UE for performing communication. The UE comprises: at least processor; and at least one computer memory operably connectable to the at least one processor, wherein the at least one processor is configured to perform operations comprising: determining at least one frequency position for a SS block; and receiving, from a base station, the SS block based on the at least one frequency position.

[0013] In accordance with an embodiment of the present disclosure, a disclosure of the present specification provides wireless communication device, the wireless communication device comprising: at least processor; and at least one computer memory operably connectable to the at least one processor, wherein the at least one processor is configured to perform operations comprising: determining at least one frequency position for a SS block; and obtaining the SS block based on the at least one frequency position.

[0014] In accordance with an embodiment of the present disclosure, a disclosure of the present specification provides CRM storing instructions that, based on being executed by at least one processor, perform operations comprising: determining at least one frequency position for a SS block; and obtaining the SS block based on the at least one frequency position.

[0015] According to a disclosure of the present disclosure, the above problem of the related art is solved.

[0016] Advantageous effects which can be obtained through specific embodiments of the present disclosure are not limited to the advantageous effects listed above. For example, there may be a variety of technical effects that a person having ordinary skill in the related art can understand and / or derive from the present disclosure. Accordingly, the specific effects of the present disclosure are not limited to those explicitly described herein, but may include various effects that may be understood or derived from the technical features of the present disclosure.

[0017] FIG. 1 shows an example of a communication system to which implementations of the present disclosure is applied.

[0018] FIG. 2 shows an example of wireless devices to which implementations of the present disclosure is applied.

[0019] FIG. 3 shows an example of a wireless device to which implementations of the present disclosure is applied.

[0020] FIG. 4 is a diagram illustrating an example of an SS block in NR.

[0021] FIG. 5 is a diagram illustrating an example of beam sweeping in the NR.

[0022] FIG. 6 shows an example of SSB to which implementations of the present disclosure can be applied.

[0023] FIG. 7 shows an example of SI acquisition procedure to which implementations of the present disclosure can be applied.

[0024] FIG. 8 shows an example of contention-based random access (CBRA) to which implementations of the present disclosure can be applied.

[0025] FIG. 9 shows an example of contention-free random access (CFRA) to which implementations of the present disclosure can be applied.

[0026] FIG. 10 shows a concept of threshold of the SSB for RACH resource association to which implementations of the present disclosure can be applied.

[0027] FIGS. 11a and 11b illustrates an example of SSB location for LBT-exempt operation and LBT-based operation according to an embodiment of the present disclosure.

[0028] FIG. 12 illustrates an example of frequency position of SSB raster for 100MHz channels and 400MHz channels according to an embodiment of the present disclosure.

[0029] FIG. 13 illustrates an example of operations of a UE according to an embodiment of the present disclosure.

[0030] The following techniques, apparatuses, and systems may be applied to a variety of wireless multiple access systems. Examples of the multiple access systems include a code division multiple access (CDMA) system, a frequency division multiple access (FDMA) system, a time division multiple access (TDMA) system, an orthogonal frequency division multiple access (OFDMA) system, a single carrier frequency division multiple access (SC-FDMA) system, and a multicarrier frequency division multiple access (MC-FDMA) system. 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). 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). 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. Evolution of 3GPP LTE includes LTE-A (advanced), LTE-A Pro, and / or 5G NR (new radio).

[0031] For convenience of description, implementations of the present disclosure are mainly described in regards to a 3GPP based wireless communication system. However, the technical features of the present disclosure are not limited thereto. For example, although 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.

[0032] For terms and technologies which are not specifically described among the terms of and technologies employed in the present disclosure, the wireless communication standard documents published before the present disclosure may be referenced.

[0033] In the present disclosure, "A or B" may mean "only A", "only B", or "both A and B". In other words, "A or B" in the present disclosure may be interpreted as "A and / or B". For example, "A, B or C" in the present disclosure may mean "only A", "only B", "only C", or "any combination of A, B and C".

[0034] In the present disclosure, slash ( / ) or comma (,) may mean "and / or". For example, "A / B" may mean "A and / or B". Accordingly, "A / B" may mean "only A", "only B", or "both A and B". For example, "A, B, C" may mean "A, B or C".

[0035] In the present disclosure, "at least one of A and B" may mean "only A", "only B" or "both A and B". In addition, 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".

[0036] In addition, in the present disclosure, "at least one of A, B and C" may mean "only A", "only B", "only C", or "any combination of A, B and C". In addition, "at least one of A, B or C" or "at least one of A, B and / or C" may mean "at least one of A, B and C".

[0037] Also, parentheses used in the present disclosure may mean "for example". In detail, when it is shown as "control information (PDCCH)", "PDCCH" may be proposed as an example of "control information". In other words, "control information" in the present disclosure is not limited to "PDCCH", and "PDCCH" may be proposed as an example of "control information". In addition, even when shown as "control information (i.e., PDCCH)", "PDCCH" may be proposed as an example of "control information".

[0038] Technical features that are separately described in one drawing in the present disclosure may be implemented separately or simultaneously.

[0039] Although not limited thereto, various descriptions, functions, procedures, suggestions, methods and / or operational flowcharts of the present disclosure disclosed herein can be applied to various fields requiring wireless communication and / or connection (e.g., 5G) between devices.

[0040] Hereinafter, the present disclosure will be described in more detail with reference to drawings. The same reference numerals in the following drawings and / or descriptions may refer to the same and / or corresponding hardware blocks, software blocks, and / or functional blocks unless otherwise indicated.

[0041] Although user equipment (UE) is illustrated in the accompanying drawings by way of example, the illustrated UE may be referred to as a terminal, mobile equipment (ME), and the like. In addition, the UE may be a portable device such as a notebook computer, a mobile phone, a PDA, a smart phone, a multimedia device, or the like, or may be a non-portable device such as a PC or a vehicle-mounted device.

[0042] Hereinafter, the UE is used as an example of a wireless communication device (or a wireless device, or a wireless apparatus) capable of wireless communication. An operation performed by the UE may be performed by a wireless communication device. A wireless communication device may also be referred to as a wireless device, a wireless device, or the like.

[0043] A base station, a term used below, generally refers to a fixed station that communicates with a wireless device. The base station may be reffered to as another term such as an evolved-NodeB (eNodeB), an evolved-NodeB (eNB), a BTS (Base Transceiver System), an access point ( Access Point), gNB (Next generation NodeB), etc.

[0044] FIG. 1 shows an example of a communication system to which implementations of the present disclosure is applied.

[0045] 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.

[0046] 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).

[0047] Partial use cases may require a plurality of categories for optimization and other use cases may focus only upon one key performance indicator (KPI). 5G supports such various use cases using a flexible and reliable method.

[0048] 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. In 5G, it is expected that 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. These many application programs require connectivity of an always turned-on state in order to push real-time information and alarm for users. 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.

[0049] In addition, 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.

[0050] 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.

[0051] 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.

[0052] 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. In the future, 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.

[0053] 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.

[0054] Consumption and distribution of energy including heat or gas is distributed at a higher level so that automated control of the distribution sensor network is demanded. 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.

[0055] Mission critical application (e.g., e-health) 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.

[0056] 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. However, in order to achieve this replacement, 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.

[0057] 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.

[0058] Referring to FIG. 1, the communication system 1 includes wireless devices 100a to 100f, base stations (BSs) 200, and a network 300. Although 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.

[0059] 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.

[0060] 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. 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. For example, 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). 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.

[0061] In the present disclosure, 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.

[0062] The UAV may be, for example, an aircraft aviated by a wireless control signal without a human being onboard.

[0063] 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.

[0064] 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.

[0065] The MTC device and the IoT device may be, for example, devices that do not require direct human intervention or manipulation. For example, the MTC device and the IoT device may include smartmeters, vending machines, thermometers, smartbulbs, door locks, or various sensors.

[0066] The medical device may be, for example, a device used for the purpose of diagnosing, treating, relieving, curing, or preventing disease. For example, the medical device may be a device used for the purpose of diagnosing, treating, relieving, or correcting injury or impairment. For example, the medical device may be a device used for the purpose of inspecting, replacing, or modifying a structure or a function. For example, the medical device may be a device used for the purpose of adjusting pregnancy. For example, 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.

[0067] The security device may be, for example, a device installed to prevent a danger that may arise and to maintain safety. For example, the security device may be a camera, a closed-circuit TV (CCTV), a recorder, or a black box.

[0068] The FinTech device may be, for example, a device capable of providing a financial service such as mobile payment. For example, the FinTech device may include a payment device or a point of sales (POS) system.

[0069] The weather / environment device may include, for example, a device for monitoring or predicting a weather / environment.

[0070] 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. Although 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. For example, 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) may perform direct communication with other IoT devices (e.g., sensors) or other wireless devices 100a to 100f.

[0071] 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. Herein, 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. For example, the wireless communication / connections 150a, 150b and 150c may transmit / receive signals through various physical channels. To this end, at least a part of various configuration information configuring processes, various signal processing processes (e.g., channel encoding / decoding, modulation / demodulation, and resource mapping / de-mapping), and resource allocating processes, for transmitting / receiving radio signals, may be performed based on the various proposals of the present disclosure.

[0072] AI refers to the field of studying artificial intelligence or the methodology that can create it, and machine learning refers to the field of defining various problems addressed in the field of AI and the field of methodology to solve them. Machine learning is also defined as an algorithm that increases the performance of a task through steady experience on a task.

[0073] Robot means a machine that automatically processes or operates a given task by its own ability. In particular, robots with the ability to recognize the environment and make self-determination to perform actions can be called intelligent robots. Robots can be classified as industrial, medical, home, military, etc., depending on the purpose or area of use. The robot can perform a variety of physical operations, such as moving the robot joints with actuators or motors. The movable robot also includes wheels, brakes, propellers, etc., on the drive, allowing it to drive on the ground or fly in the air.

[0074] Autonomous driving means a technology that drives on its own, and autonomous vehicles mean vehicles that drive without user's control or with minimal user's control. For example, autonomous driving may include maintaining lanes in motion, automatically adjusting speed such as adaptive cruise control, automatic driving along a set route, and automatically setting a route when a destination is set. The vehicle covers vehicles equipped with internal combustion engines, hybrid vehicles equipped with internal combustion engines and electric motors, and electric vehicles equipped with electric motors, and may include trains, motorcycles, etc., as well as cars. Autonomous vehicles can be seen as robots with autonomous driving functions.

[0075] Extended reality is collectively referred to as VR, AR, and MR. VR technology provides objects and backgrounds of real world only through computer graphic (CG) images. AR technology provides a virtual CG image on top of a real object image. MR technology is a CG technology that combines and combines virtual objects into the real world. MR technology is similar to AR technology in that they show real and virtual objects together. However, there is a difference in that in AR technology, virtual objects are used as complementary forms to real objects, while in MR technology, virtual objects and real objects are used as equal personalities.

[0076] NR supports multiples numerologies (and / or multiple subcarrier spacings (SCS)) to support various 5G services. For example, if SCS is 15 kHz, wide area can be supported in traditional cellular bands, and if SCS is 30 kHz / 60 kHz, dense-urban, lower latency, and wider carrier bandwidth can be supported. If SCS is 60 kHz or higher, bandwidths greater than 24.25 GHz can be supported to overcome phase noise.

[0077] 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. For example, the frequency ranges of the two types (FR1 and FR2) may be as shown in Table 1 below. For ease of explanation, in the frequency ranges used in the NR system, FR1 may mean "sub 6 GHz range", FR2 may mean "above 6 GHz range," and may be referred to as millimeter wave (mmW). FR2 may include FR 2-1 and FR 2-2 as shown in Examples of Table 1 and Table 2.

[0078] Frequency Range designationCorresponding frequency rangeSubcarrier SpacingFR1450MHz - 6000MHz15, 30, 60kHzFR2FR2-124250MHz - 52600MHz60, 120, 240kHzFR2-257000MHz - 71000MHz120, 480, 960kHz

[0079] As mentioned above, the numerical value of the frequency range of the NR system may be changed. For example, FR1 may include a frequency band of 410MHz to 7125MHz as shown in Table 2 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).

[0080] Frequency Range designationCorresponding frequency rangeSubcarrier SpacingFR1410MHz - 7125MHz15, 30, 60kHzFR2FR2-124250MHz - 52600MHz60, 120, 240kHzFR2-257000MHz - 71000MHz120, 480, 960kHz

[0081] Here, 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. For example, 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. Additionally and / or alternatively, the radio communication technologies implemented in the wireless devices in the present disclosure may communicate based on LTE-M technology. For example, LTE-M technology may be an example of LPWAN technology and be called by various names such as enhanced machine type communication (eMTC). For example, 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. Additionally and / or alternatively, 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. For example, 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.

[0082] FIG. 2 shows an example of wireless devices to which implementations of the present disclosure is applied.

[0083] Referring to FIG. 2, 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).

[0084] In FIG. 2, {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.

[0085] The first wireless device 100 may include at least one transceiver, such as a transceiver 106, at least one processing chip, such as a processing chip 101, and / or one or more antennas 108.

[0086] The processing chip 101 may include at least one processor, such a processor 102, and at least one memory, such as a memory 104. It is exemplarily shown in FIG. 2 that the memory 104 is included in the processing chip 101. Additional and / or alternatively, the memory 104 may be placed outside of the processing chip 101.

[0087] The processor 102 may control the memory 104 and / or the transceiver 106 and may be configured to implement the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts described in the present disclosure. For example, the processor 102 may process information within the memory 104 to generate first information / signals and then transmit radio signals including the first information / signals through the transceiver 106. The processor 102 may receive radio signals including second information / signals through the transceiver 106 and then store information obtained by processing the second information / signals in the memory 104.

[0088] 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. For example, 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. For example, the software code 105 may control the processor 102 to perform one or more protocols. For example, the software code 105 may control the processor 102 to perform one or more layers of the radio interface protocol.

[0089] Herein, the processor 102 and the memory 104 may be a part of a communication modem / circuit / chip designed to implement RAT (e.g., LTE or NR). The transceiver 106 may be connected to the processor 102 and transmit and / or receive radio signals through one or more antennas 108. Each of the transceiver 106 may include a transmitter and / or a receiver. The transceiver 106 may be interchangeably used with radio frequency (RF) unit(s). In the present disclosure, the first wireless device 100 may represent a communication modem / circuit / chip.

[0090] The second wireless device 200 may include at least one transceiver, such as a transceiver 206, at least one processing chip, such as a processing chip 201, and / or one or more antennas 208.

[0091] The processing chip 201 may include at least one processor, such a processor 202, and at least one memory, such as a memory 204. It is exemplarily shown in FIG. 2 that the memory 204 is included in the processing chip 201. Additional and / or alternatively, the memory 204 may be placed outside of the processing chip 201.

[0092] The processor 202 may control the memory 204 and / or the transceiver 206 and may be configured to implement the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts described in the present disclosure. For example, the processor 202 may process information within the memory 204 to generate third information / signals and then transmit radio signals including the third information / signals through the transceiver 206. The processor 202 may receive radio signals including fourth information / signals through the transceiver 106 and then store information obtained by processing the fourth information / signals in the memory 204.

[0093] 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. For example, 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. For example, the software code 205 may control the processor 202 to perform one or more protocols. For example, the software code 205 may control the processor 202 to perform one or more layers of the radio interface protocol.

[0094] Herein, the processor 202 and the memory 204 may be a part of a communication modem / circuit / chip designed to implement RAT (e.g., LTE or NR). The transceiver 206 may be connected to the processor 202 and transmit and / or receive radio signals through one or more antennas 208. Each of the transceiver 206 may include a transmitter and / or a receiver. The transceiver 206 may be interchangeably used with RF unit. In the present disclosure, the second wireless device 200 may represent a communication modem / circuit / chip.

[0095] Hereinafter, hardware elements of the wireless devices 100 and 200 will be described more specifically. One or more protocol layers may be implemented by, without being limited to, one or more processors 102 and 202. For example, 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). 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.

[0096] 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. As an example, one or more application specific integrated circuits (ASICs), one or more digital signal processors (DSPs), one or more digital signal processing devices (DSPDs), one or more programmable logic devices (PLDs), or one or more field programmable gate arrays (FPGAs) may be included in the one or more processors 102 and 202. The descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed in the present disclosure 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.

[0097] 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.

[0098] 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. For example, 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. For example, 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.

[0099] 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. In the present disclosure, the one or more antennas 108 and 208 may be a plurality of physical antennas or a plurality of logical antennas (e.g., antenna ports).

[0100] The one or more transceivers 106 and 206 may convert received user data, control information, 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. To this end, the one or more transceivers 106 and 206 may include (analog) oscillators and / or filters. For example, the one or more transceivers 106 and 206 can up-convert OFDM baseband signals to OFDM signals by their (analog) oscillators and / or filters under the control of the one or more processors 102 and 202 and transmit the up-converted OFDM signals at the carrier frequency. The one or more 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 one or more processors 102 and 202.

[0101] In the implementations of the present disclosure, a UE may operate as a transmitting device in uplink (UL) and as a receiving device in downlink (DL). In the implementations of the present disclosure, a BS may operate as a receiving device in UL and as a transmitting device in DL. Hereinafter, for convenience of description, it is mainly assumed that the first wireless device 100 acts as the UE, and the second wireless device 200 acts as the BS. For example, 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.

[0102] In the present disclosure, a BS is also referred to as a node B (NB), an eNode B (eNB), or a gNB.

[0103] FIG. 3 shows an example of a wireless device to which implementations of the present disclosure is applied.

[0104] The wireless device may be implemented in various forms according to a use-case / service (refer to FIG. 1).

[0105] Referring to FIG. 3, 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. For example, 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. For example, 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. For example, the transceiver(s) 114 may include the one or more transceivers 106 and 206 of FIG. 2 and / or the one or more antennas 108 and 208 of FIG. 2. The control unit 120 is electrically connected to the communication unit 110, the memory unit 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.

[0106] The additional components 140 may be variously configured according to types of the wireless devices 100 and 200. For example, 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. 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. 1), a digital broadcast terminal, a hologram device, a public safety device, an MTC device, a medicine device, a FinTech device (or a finance device), a security device, a climate / environment device, the AI server / device (400 of FIG. 1), the BSs (200 of FIG. 1), a network node, etc. The wireless devices 100 and 200 may be used in a mobile or fixed place according to a use-example / service.

[0107] In FIG. 3, 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. For example, in each of the wireless devices 100 and 200, 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. For example, the control unit 120 may be configured by a set of one or more processors. As an example, the 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. As another example, the memory unit 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.

[0108] <Operating Band inNR>

[0109] An operating band shown in Table 3 is a reframing operating band that is transitioned from an operating band of LTE / LTE-A. This operating band is referred to as FR1 band.

[0110] NR Operating BandUplink Operating BandDownlink Operating BandDuplex ModeFUL_low- FUL_highFDL_low- FDL_highn11920 MHz - 1980 MHz2110 MHz - 2170 MHzFDDn21850 MHz - 1910 MHz1930 MHz - 1990 MHzFDDn31710 MHz - 1785 MHz1805 MHz - 1880 MHzFDDn5824 MHz - 849 MHz869 MHz - 894 MHzFDDn72500 MHz - 2570 MHz2620 MHz - 2690 MHzFDDn8880 MHz - 915 MHz925 MHz - 960 MHzFDDn12699 MHz - 716 MHz729 MHz - 746 MHzFDDn14788 MHz - 798 MHz758 MHz - 768 MHzFDDn18815 MHz - 830 MHz860 MHz - 875 MHzFDDn20832 MHz - 862 MHz791 MHz - 821 MHzFDDn251850 MHz - 1915 MHz1930 MHz - 1995 MHzFDDn26814 MHz - 849 MHz859 MHz - 894 MHzFDDn28703 MHz - 748 MHz758 MHz - 803 MHzFDDn29N / A717 MHz - 728 MHzSDLn302305 MHz - 2315 MHz2350 MHz - 2360 MHzFDDn342010 MHz - 2025 MHz2010 MHz - 2025 MHzTDDn382570 MHz - 2620 MHz2570 MHz - 2620 MHzTDDn391880 MHz - 1920 MHz1880 MHz - 1920 MHzTDDn402300 MHz - 2400 MHz2300 MHz - 2400 MHzTDDn412496 MHz - 2690 MHz2496 MHz - 2690 MHzTDDn465150 MHz - 5925 MHz5150 MHz - 5925 MHzTDDn475855 MHz - 5925 MHz5855 MHz - 5925 MHzTDDn483550 MHz - 3700 MHz3550 MHz - 3700 MHzTDDn501432 MHz - 1517 MHz1432 MHz - 1517 MHzTDD1n511427 MHz - 1432 MHz1427 MHz - 1432 MHzTDDn532483.5 MHz - 2495 MHz2483.5 MHz - 2495 MHzTDDn651920 MHz - 2010 MHz2110 MHz - 2200 MHzFDDn661710 MHz - 1780 MHz2110 MHz - 2200 MHzFDDn701695 MHz - 1710 MHz1995 MHz - 2020 MHzFDDn71663 MHz - 698 MHz617 MHz - 652 MHzFDDn741427 MHz - 1470 MHz1475 MHz - 1518 MHzFDDn75N / A1432 MHz - 1517 MHzSDLn76N / A1427 MHz - 1432 MHzSDLn773300 MHz - 4200 MHz3300 MHz - 4200 MHzTDDn783300 MHz - 3800 MHz3300 MHz - 3800 MHzTDDn794400 MHz - 5000 MHz4400 MHz - 5000 MHzTDDn801710 MHz - 1785 MHzN / ASULn81880 MHz - 915 MHzN / ASULn82832 MHz - 862 MHzN / ASULn83703 MHz - 748 MHzN / ASULn841920 MHz - 1980 MHzN / ASULn861710 MHz - 1780 MHzN / ASULn89824 MHz - 849 MHzN / ASULn902496 MHz - 2690 MHz2496 MHz - 2690 MHzTDDn91832 MHz - 862 MHz1427 MHz - 1432 MHzFDDn92832 MHz - 862 MHz1432 MHz - 1517 MHzFDDn93880 MHz - 915 MHz1427 MHz - 1432 MHzFDDn94880 MHz - 915 MHz1432 MHz - 1517 MHzFDDn952010 MHz - 2025 MHzN / ASULn965925 MHz - 7125 MHz5925 MHz - 7125 MHzTDD

[0111] The following table shows an NR operating band defined at high frequencies. This operating band is referred to as FR2 band.

[0112] NR Operating BandUplink Operating BandDownlink Operating BandDuplex ModeFUL_low- FUL_highFDL_low- FDL_highn25726500 MHz - 29500 MHz26500 MHz - 29500 MHzTDDn25824250 MHz -27500 MHz24250 MHz -27500 MHzTDDn25939500 MHz - 43500 MHz39500 MHz - 43500 MHzTDDn26037000 MHz -40000 MHz37000 MHz - 40000 MHzTDDn26127500 MHz - 28350 MHz27500 MHz - 28350 MHzTDDn26247200 MHz - 48200 MHz47200 MHz - 48200 MHzTDDn26357000 MHz - 71000 MHz57000 MHz - 71000 MHzTDD

[0113] <SS block inNR>

[0114] In the 5G NR, information required for a UE to perform an initial access, that is, a Physical Broadcast Channel (PBCH) including a Master Information Block (MIB) and a synchronization signal (SS) (including PSS and SSS) are defined as an SS block. In addition, a plurality of SS blocks may be grouped and defined as an SS burst, and a plurality of SS bursts may be grouped and defined as an SS burst set. It is assumed that each SS block is beamformed in a particular direction, and various SS blocks existing in an SS burst set are designed to support UEs existing in different directions.

[0115] FIG. 4 is a diagram illustrating an example of an SS block inNR.

[0116] Referring to FIG. 4, an SS burst is transmitted in every predetermined periodicity. Accordingly, a UE receives SS blocks, and performs cell detection and measurement.

[0117] Meanwhile, in the 5G NR, beam sweeping is performed on an SS. A detailed description thereof will be provided with reference to FIG. 5.

[0118] FIG. 5 is a diagram illustrating an example of beam sweeping in theNR.

[0119] A base station transmits each SS block in an SS burst over time while performing beam sweeping. In this case, multiple SS blocks in an SS burst set are transmitted to support UEs existing in different directions. In FIG. 5, the SS burst set includes one to six SS blocks, and each SS burst includes two SS blocks.

[0120] <Cell Search>

[0121] Cell search is the procedure by which a UE acquires time and frequency synchronization with a cell and detects the cell ID of that cell. NR cell search is based on the primary synchronization signal (PSS) and secondary synchronization signal (SSS), and PBCH demodulation reference signal (DM-RS), located on the synchronization raster.

[0122] The cell search procedure of the UE can be summarized in Table 5.

[0123] Type of SignalsOperations1ststepPSS* SS / PBCH block (SSB) symbol timing acquisition* Cell ID detection within a cell ID group (3 hypothesis)2ndStepSSS* Cell ID group detection (336 hypothesis)3rdStepPBCH DM-RS* SSB index and Half frame index(Slot and frame boundary detection)4thStepPBCH* Time information (80ms, SFN, SSB index, HF)* RMSI CORESET / Search space configuration5thStepPDCCH and PDSCH* Cell access information* RACH configuration

[0124] FIG. 6 shows an example of SSB to which implementations of the present disclosure can be applied.

[0125] The SSB consists of PSS and SSS, each occupying 1 symbol and 127 subcarriers, and PBCH spanning across 3 OFDM symbols and 240 subcarriers, but on one symbol leaving an unused part in the middle for SSS. The possible time locations of SSBs within a half-frame are determined by subcarrier spacing and the periodicity of the half-frames where SSBs are transmitted is configured by the network. During a half-frame, different SSBs may be transmitted in different spatial directions (i.e. using different beams, spanning the coverage area of a cell).

[0126] Within the frequency span of a carrier, multiple SSBs can be transmitted. The physical cell IDs (PCIs) of SSBs transmitted in different frequency locations do not have to be unique, i.e., different SSBs in the frequency domain can have different PCIs. However, when an SSB is associated with a remaining minimum system information (RMSI), the SSB corresponds to an individual cell, which has a unique NR cell global identity (NCGI). Such an SSB is referred to as a cell-defining SSB (CD-SSB). A PCell is always associated to a CD-SSB located on the synchronization raster.

[0127] Polar coding is used for PBCH.

[0128] The UE may assume a band-specific subcarrier spacing for the SSB unless a network has configured the UE to assume a different sub-carrier spacing.

[0129] PBCH symbols carry its own frequency-multiplexed DM-RS.

[0130] Quadrature phase shift keying (QPSK) modulation is used for PBCH.

[0131] System information (SI) consists of a master information block (MIB) and a number of system information blocks (SIBs), which are divided into minimum SI and other SI.

[0132] (1) Minimum SI comprises basic information required for initial access and information for acquiring any other SI. Minimum SI consists of:

[0133] -MIBcontains cell barred status information and essential physical layer information of the cell required to receive further system information (e.g.,SIB1), e.g. CORESET#0 configuration.MIBis always periodically broadcast on BCH with a periodicity of 80ms and repetitions made within 80ms. The first transmission of theMIBis scheduled in subframes as defined above for SS / PBCH block and repetitions are scheduled according to the period of SSB.

[0134] -SIB1defines the availability and the scheduling of other system information blocks (e.g., mapping of SIBs to SI message, periodicity, SI-window size) with an indication whether one or more SIBs are only provided on-demand and, in that case, the configuration needed by the UE to perform the SI request and contains information required for initial access.SIB1is also referred to as RMSI and is periodically broadcast on DL-SCH or sent in a dedicated manner on DL-SCH to UEs in RRC_CONNECTED, with a periodicity of 160ms and variable transmission repetition periodicity within 160ms. The default transmission repetition periodicity ofSIB1is 20ms but the actual transmission repetition periodicity is up to network implementation. For SSB and CORESET multiplexing pattern 1,SIB1repetition transmission period is 20ms. For SSB and CORESET multiplexing pattern 2 / 3,SIB1transmission repetition period is the same as the SSB period.SIB1is cell-specific SIB.

[0135] (2) Other SI encompasses all SIBs not broadcast in the minimum SI. Those SIBs can either be periodically broadcast on DL-SCH, broadcast on-demand on DL-SCH (i.e., upon request from UEs in RRC_IDLE or RRC_INACTIVE), or sent in a dedicated manner on DL-SCH to UEs in RRC_CONNECTED. SIBs in other SI are carried inSystemInformation(SI) messages. Only SIBs having the same periodicity can be mapped to the same SI message. Each SI message is transmitted within periodically occurring time domain windows (referred to as SI-windows with same length for all SI messages). Each SI message is associated with an SI-window and the SI-windows of different SI messages do not overlap. That is, within one SI-window only the corresponding SI message is transmitted. An SI message may be transmitted a number of times within the SI-window. Any SIB exceptSIB1can be configured to be cell specific or area specific, using an indication inSIB1. The cell specific SIB is applicable only within a cell that provides the SIB while the area specific SIB is applicable within an area referred to as SI area, which consists of one or several cells and is identified by systemInformationAreaID. Other SI consists of:

[0136] -SIB2contains cell re-selection information, mainly related to the serving cell;

[0137] -SIB3contains information about the serving frequency and intra-frequency neighbouring cells relevant for cell re-selection (including cell re-selection parameters common for a frequency as well as cell specific re-selection parameters);

[0138] -SIB4contains information about other NR frequencies and inter-frequency neighbouring cells relevant for cell re-selection (including cell re-selection parameters common for a frequency as well as cell specific re-selection parameters);

[0139] -SIB5contains information about E-UTRA frequencies and E-UTRA neighbouring cells relevant for cell re-selection (including cell re-selection parameters common for a frequency as well as cell specific re-selection parameters);

[0140] -SIB6contains an earthquake and tsunami warning system (ETWS) primary notification;

[0141] -SIB7contains an ETWS secondary notification;

[0142] -SIB8contains a commercial mobile alert system (CMAS) warning notification;

[0143] -SIB9contains information related to global positioning system (GPS) time and coordinated universal Time (UTC).

[0144] For a UE in RRC_CONNECTED, the network can provide system information through dedicated signaling using theRRCReconfigurationmessage, e.g. if the UE has an active BWP with no common search space configured to monitor system information or paging.

[0145] For PSCell and SCells, the network provides the required SI by dedicated signaling, i.e., within anRRCReconfigurationmessage. Nevertheless, the UE shall acquireMIBof the PSCell to get system frame number (SFN) timing of the SCG (which may be different from MCG). Upon change of relevant SI for SCell, the network releases and adds the concerned SCell. For PSCell, the required SI can only be changed with Reconfiguration with Sync.

[0146] The physical layer imposes a limit to the maximum size a SIB can take. The maximumSIB1orSImessage size is 2976 bits.

[0147] FIG. 7 shows an example of SI acquisition procedure to which implementations of the present disclosure can be applied.

[0148] The UE applies the SI acquisition procedure to acquire the AS and NAS information. The procedure applies to UEs in RRC_IDLE, in RRC_INACTIVE and in RRC_CONNECTED.

[0149] The UE in RRC_IDLE and RRC_INACTIVE shall ensure having a valid version of (at least) theMIB,SIB1throughSIB4andSIB5(if the UE supports E-UTRA).

[0150] For a cell / frequency that is considered for camping by the UE, the UE is not required to acquire the contents of the minimum SI of that cell / frequency from another cell / frequency layer. This does not preclude the case that the UE applies stored SI from previously visited cell(s).

[0151] If the UE cannot determine the full contents of the minimum SI of a cell by receiving from that cell, the UE shall consider that cell as barred.

[0152] In case of bandwidth adaptation (BA), the UE only acquires SI on the active BWP.

[0153] For UEs in RRC_IDLE and RRC_INACTIVE, a request for other SI triggers a random access procedure where MSG3 includes the SI request message unless the requested SI is associated to a subset of the PRACH resources, in which case MSG1 is used for indication of the requested other SI. When MSG1 is used, the minimum granularity of the request is one SI message (i.e., a set of SIBs), one RACH preamble and / or PRACH resource can be used to request multiple SI messages and the gNB acknowledges the request in MSG2. When MSG 3 is used, the gNB acknowledges the request in MSG4.

[0154] The other SI may be broadcast at a configurable periodicity and for a certain duration. The other SI may also be broadcast when it is requested by UE in RRC_IDLE / RRC_INACTIVE.

[0155] For a UE to be allowed to camp on a cell it must have acquired the contents of the minimum SI from that cell. There may be cells in the system that do not broadcast the minimum SI and where the UE therefore cannot camp.

[0156] Change of system information (other than for ETWS / CMAS4) only occurs at specific radio frames, i.e., the concept of a modification period is used. System information may be transmitted a number of times with the same content within a modification period, as defined by its scheduling. The modification period is configured by system information.

[0157] When the network changes (some of the) system information, it first notifies the UEs about this change, i.e., this may be done throughout a modification period. In the next modification period, the network transmits the updated system information. Upon receiving a change notification, the UE acquires the new system information from the start of the next modification period. The UE applies the previously acquired system information until the UE acquires the new system information.

[0158] The random access procedure of the UE can be summarized in Table 6.

[0159] Type of SignalsOperations / Information Acquired1ststepPRACH preamble in UL* Initial beam acquisition* Random election of RA-preamble ID2ndStepRandom Access Response on DL-SCH* Timing alignment information* RA-preamble ID* Initial UL grant, Temporary C-RNTI3rdStepUL transmission on UL-SCH* RRC connection request* UE identifier4thStepContention Resolution on DL* Temporary C-RNTI on PDCCH for initial access* C-RNTI on PDCCH for UE in RRC_CONNECTED

[0160] The random access procedure is triggered by a number of events:

[0161] - Initial access from RRC_IDLE;

[0162] - RRC connection re-establishment procedure;

[0163] - DL or UL data arrival during RRC_CONNECTED when UL synchronization status is "non-synchronized";

[0164] - UL data arrival during RRC_CONNECTED when there are no PUCCH resources for scheduling request (SR) available;

[0165] - SR failure;

[0166] - Request by RRC upon synchronous reconfiguration (e.g., handover);

[0167] - Transition from RRC_INACTIVE;

[0168] - To establish time alignment for a secondary timing advance group (TAG);

[0169] - Request for other SI;

[0170] - Beam failure recovery.

[0171] FIG. 8 shows an example of contention-based random access (CBRA) to which implementations of the present disclosure can be applied. FIG. 9 shows an example of contention-free random access (CFRA) to which implementations of the present disclosure can be applied.

[0172] For random access in a cell configured with supplementary UL (SUL), the network can explicitly signal which carrier to use (UL or SUL). Otherwise, the UE selects the SUL carrier if and only if the measured quality of the DL is lower than a broadcast threshold. Once started, all uplink transmissions of the random access procedure remain on the selected carrier.

[0173] When CA is configured, the first three steps of CBRA always occur on the PCell while contention resolution (step 4) can be cross-scheduled by the PCell. The three steps of a CFRA started on the PCell remain on the PCell. CFRA on SCell can only be initiated by the gNB to establish timing advance for a secondary TAG: the procedure is initiated by the gNB with a PDCCH order (step 0) that is sent on a scheduling cell of an activated SCell of the secondary TAG, preamble transmission (step 1) takes place on the indicated SCell, and random access response (step 2) takes place on PCell.

[0174] Random access preamble sequences, of two different lengths are supported. Long sequence length 839 is applied with subcarrier spacings of 1.25 and 5 kHz and short sequence length 139 is applied with subcarrier spacings of 15, 30, 60 and 120 kHz. Long sequences support unrestricted sets and restricted sets of Type A and Type B, while short sequences support unrestricted sets only.

[0175] Multiple PRACH preamble formats are defined with one or more PRACH OFDM symbols, and different cyclic prefix and guard time. The PRACH preamble configuration to use is provided to the UE in the system information.

[0176] The UE calculates the PRACH transmit power for the retransmission of the preamble based on the most recent estimate pathloss and power ramping counter.

[0177] FIG. 10 shows a concept of threshold of the SSB forRACHresource association to which implementations of the present disclosure can be applied.

[0178] The system information provides information for the UE to determine the association between the SSB and the RACH resources. The reference signal received power (RSRP) threshold for SSB selection for RACH resource association is configurable by network.

[0179] <Disclosure of the Present Specification>

[0180] Disclosure of the present specification describes examples of synchronization raster definition for LBT-exempt operation and LBT-based operation within the same band. Herein, LBT-based operation can also be called as "shared spectrum channel access". Shared spectrum channel access may mean operation on un-licensed bands where LBT-based spectrum access scheme can be used. LBT-exempt operation is the initial spectrum access scheme used in NR (and many other cellular systems) and used on licensed bands where spectrum owner can fully control his spectrum..

[0181] In prior-arts, there was no sync raster for licensed bands (LBT-exempt) and un-licensed bands (LBT based) that overlap one another. Herein, LBT means Listen Before Talk operation. Conventionally, the bands for licensed operation and the bands for un-licensed operation have been occupying different frequencies and there has not been any overlap between the bands for the licensed operation and the bands for the un-licensed operation. Therefore, independent SSB raster design was applied for each band.

[0182] However, currently, new 60GHz Frequency Range (FR) 2-2 frequency range between 52.6 and 71GHz has been introduced. It is likely that bands targeted for licensed operation and un-licensed operation will overlap. There are problems that there was no way to distinguish these networks by using different locations for SSB.

[0183] SSB raster design needs to be introduced for 60GHz FR2-2 frequency range between 52.6 and 71GHz. However, 60GHz FR2-2 frequency range between 52.6 and 71GHz is very wide. Therefore, the existing 3GPP channel and SSB raster design is becoming really heavy and complex to be used by a User Equipment (UE). For example, Unlicensed band, which is already introduced in USA, has ranges from 57 to 71GHz and is 14GHz wide.

[0184] However, reuse of the existing SSB raster design would result into making initial synchronization process very complex and time consuming due to high number of SSB locations that UE should check in order to find the network. Thus, new SSB raster design to reduce search complexity and reduce time for initial synchronization procedure.

[0185] For example, examples of the present disclosure may propose a new SSB raster design that creates one SSB location for each 100MHz of the spectrum while reusing the 17.28MHz SSB raster definition that is already used in FR2-1. This new scheme may reduce the search complexity with factor of 5-6.

[0186] Channel raster and synchronization (e.g. SSB) raster for 52.6-71GHz are being discussed. Currently 3GPP specifications define generic channel raster and synchronization raster for NR FR2 operation as follows:

[0187] Channel raster is explained as follows:

[0188] NR Absolute Radio Frequency Channel Number (NR-ARFCN)

[0189] The global frequency raster defines a set of Radio Frequency (RF) reference frequencies FREF. The RF reference frequency is used in signaling to identify the position of RF channels, SS blocks and other elements.

[0190] The global frequency raster is defined for all frequencies from 0 to 100 GHz. The granularity of the global frequency raster is ΔFGlobal.

[0191] RF reference frequencyis designated by an NR Absolute Radio Frequency Channel Number (NR-ARFCN) in the range [2016667...3279165] on the global frequency raster. The relation between the NR-ARFCN and the RF reference frequency FREFin MHz is given by the following equation: FREF= FREF-Offs+ ΔFGlobal(NREF- NREF-Offs). Where FREF-Offsand NRef-Offsare given in table 7 and NREFis the NR-ARFCN.

[0192] Frequency range (MHz)ΔFGlobal(kHz)FREF-Offs[MHz]NREF-OffsRange of NREF24250 - 1000006024250.0820166672016667 - 3279165

[0193] Table 7 shows examples of NR-ARFCN parameters for the global frequency raster.

[0194] Synchronization raster is explained as follows:

[0195] Hereinafter, synchronization raster and numbering are explained.

[0196] The synchronization raster indicates the frequency positions of the synchronization block that can be used by the UE for system acquisition when explicit signaling of the synchronization block position is not present.

[0197] A global synchronization raster is defined for all frequencies. The frequency position of the SS block is defined as SSREFwith corresponding number GSCN(Global Synchronization Raster Channel). The parameters defining the SSREFand GSCN for all the frequency ranges are in Table 8.

[0198] The resource element corresponding to the SS block reference frequency SSREFis given in subclause 5.4.3.2. of 3GPP TS 38.213 V16.4.0. The synchronization raster and the subcarrier spacing of the synchronization block is defined separately for each band.

[0199] Frequency rangeSS block frequency position SSREFGSCNRange of GSCN24250 - 100000 MHz24250.08 MHz + N * 17.28 MHz,N = 0:438322256 + N22256 - 26639

[0200] Table 8 shows examples of GSCN parameters for the global frequency raster.

[0201] The above explained Channel raster and Synchronization raster may be derived from prior arts.

[0202] Hereinafter, examples of SSB raster proposed by disclosure of the present specification are explained.

[0203] When NR system is specified to new frequency range in 52.6-71GHz range, the system is expected to be operated also on un-licensed bands where regulative rules are different from licensed band and the system may require LBT functionality to be used (LBT= Listen Before Talk). Different behavior of licensed operation / un-licensed operation for SSB transmission / reception can be introduced to unlicensed band (or for operation with shared spectrum channel access). The behavior aiming at un-licensed band is to allow multiple transmission opportunities to every SSB beam in order to cope with LBT failure, which is similar to the one defined in Rel-16 NR-U (i.e., NR Radio Access operating with shared spectrum channel access). For example, if a gNB fails to transmit a SSB with beam direction X due to LBT failure, the gNB can try to transmit another SSB (but with same beam direction X) one more time in a given window. This behavior described in 3GPP TS 38.213 V16.4.0 Clause 4.1 is extracted as the following:

[0204] For operation with shared spectrum channel access, a UE may assume that transmission of SS / PBCH blocks in a half frame is within a discovery burst transmission window that starts from the first symbol of the first slot in a half-frame. The UE can be provided per serving cell byDiscoveryBurst-WindowLengtha duration of the discovery burst transmission window. IfDiscoveryBurst-WindowLengthis not provided, the UE may assume that the duration of the discovery burst transmission window is a half frame. For a serving cell, the UE assumes that a periodicity of the discovery burst transmission window is same as a periodicity of half frames for receptions of SS / PBCH blocks in the serving cell. The UE may assume that one or more SS / PBCH blocks indicated byssb-PositionsInBurstmay be transmitted within the discovery burst transmission window and have candidate SS / PBCH blocks indexes corresponding to SS / PBCH block indexes provided byssb-PositionsInBurst. If MSB k, k≥1, ofssb-PositionsInBurstis set to 1, the UE may assume that SS / PBCH block(s) within the discovery burst transmission window with candidate SS / PBCH block index(es) corresponding to SS / PBCH block index equal to k-1 may be transmitted; if MSB k is set to 0, the UE may assume that the SS / PBCH block(s) are not transmitted.

[0205] For operation with shared spectrum channel access, a UE may assume that SS / PBCH blocks in a serving cell that are within a same discovery burst transmission window or across discovery burst transmission windows are quasi co-located with respect to average gain, quasi co-location 'typeA' and 'typeD' properties, when applicable, if a value of is same among the SS / PBCH blocks. is an index of a Demodulation Reference Signal (DM-RS) sequence transmitted in a PBCH of a corresponding SS / PBCH block, and is either provided byssb-PositionQCLor, ifssb-PositionQCLis not provided,obtained from aMIBprovided by a SS / PBCH block according to Table 9 with <24.subCarrierSpacingCommonindicates SCS of RMSI only for the case of operation without shared spectrum channel access. Herein, kSSBmay be from 3GPP TS 38.211 V 16.5.0. The UE can determine an SS / PBCH block index according to , or according to where is the candidate SS / PBCH block index. The UE may assume that within a discovery burst transmission window, a number of transmitted SS / PBCH blocks on a serving cell is not larger than and a number of transmitted SS / PBCH blocks with a same SS / PBCH block index is not larger than one.

[0206] subCarrierSpacingCommonLSB ofssb-SubcarrierOffset scs15or6001scs15or6012scs30or12004scs30or12018

[0207] Table 9 shows examples of mapping between the combination ofsubCarrierSpacingCommonand Least Significant Bit (LSB) ofssb-SubcarrierOffsetto .

[0208] The behavior described in 3GPP TS 38.213 V16.4.0 Clause 4.1 was explained above.

[0209] Even in un-licensed band, this kind of behavior may not be applied due to the fact that some regional regulation does not mandate LBT operation in unlicensed spectrum. Considering this case, there may be two sets of GSCNs for "1) LBT-exempt operation (e.g., where only a single candidate SS / PBCH block index corresponding to SS / PBCH block index is defined within a discovery burst transmission window)" and "2) LBT-based operation (e.g., where more than one candidate SS / PBCH block indexes corresponding to SS / PBCH block index can be defined within a discovery burst transmission window)", rather than licensed operation and unlicensed operation.

[0210] However, it is noted that LBT-exempt operation and LBT-based operation in this disclosure can be replaced with licensed band operation and unlicensed band operation, respectively. Or, LBT-exempt operation and LBT-based operation in this disclosure can be replaced with operation without shared spectrum channel access and operation with shared spectrum channel access, respectively.

[0211] When different sets for GSCN locations are specified to correspond with the same channel number (NR-ARFCN) the UE can also implement different kind of search algorithm depending on the searching for the GSCN with LBT-exempt or LBT based operation. GSCN locations may mean frequency locations for SSB raster.

[0212] Both LBT exempt and LBT based operation may be necessary within the same frequency band. In earlier occasions, like for un-licensed operation with LBT based channel access of LTE and NR on 5GHz and 6GHz bands, a full band was dedicated either for LBT-exempt or LBT-based operation.

[0213] Hereinafter, first example to fourth example of the disclosure of the present specification are explained. At least one of first example to fourth example of the disclosure of the present specification may be combined to implement descriptions of the disclosure of the present specification.

[0214] 1. First Example of the disclosure of the present specification

[0215] Example below shows SSB configuration for 52.6-71GHz frequency range with 100MHz wide channels and for the case that valid channels are down selected to align with Institute of Electrical and Electronics Engineers (IEEE) channels only within the range of 57-71GHz, bands nXXX and nYYY respectively.

[0216] Herein, "down selecting" may mean selecting frequency locations based on GSCN sparser than frequency locations of default GSCN with step size 1 in Table 8. For example, down selected frequency locations may have step size bigger than 1.

[0217] In order to achieve 100MHz down selected raster a step size vector with length of 19 and values of < 6 6 6 6 4 6 6 6 6 6 6 6 6 6 4 6 6 6 6 > need to be used. "step size vector" may mean a vector defining step sizes which to be multiplied by a predefined value (e.g. 17.28MHz in Table 8), which defines the frequency difference between the adjacent GSCN locations. With above presented vector with 19 values the frequency difference between the First GSCN location and second GSCN location is 6 * 17.28MHz as the first value of the vector is 6. Similarly the frequency difference between the second GSCN location and third GSCN location is 6 * 17.28MHz as the second value of the vector is 6 and so on. The 19thvalue of the vector defines the frequency difference between the 19thand 20thGSCN location and after this the vector is same proves is repeated starting from vector value 1 until the Last GSCN location is reached. For raster of 2160MHz / 2= 1080MHz as used in IEEE, step size of <62, 63> shall be used.

[0218] NR Operating BandSS Block SCSSS Block pattern(Note 1 applied)Range of GSCN(First - <Step size> - Last)nXXX120kHz23899 < NOTE2 > 24959 (Note 3 applied)23900 < NOTE2 > 24960 (Note 4 applied)nYYY120kHz24230 < 62,63 > 24855 (Note 4 applied)NOTE1: SS Block pattern is defined in above mentioned 3GPP TS 38.213 V16.4.0 Clause 4.NOTE2: Step size vector with length of 19: < 6 6 6 6 4 6 6 6 6 6 6 6 6 6 4 6 6 6 6 >NOTE3: For LBT-exempt operationNOTE4: For LBT-based operation

[0219] Table 10 shows examples of applicable SSB raster entries per operating band.

[0220] With this approach the location of the SSB within the 100MHz channel for LBT-exempt and LBT-based operation is shown in FIGS. 11a and 11b below, which shows that it is possible to define two SSB locations per 100MHz channel: one for LBT-exempt in the middle part of the channel (for example, as shown in example of FIG. 11a) and the other (N+1) for LBT-based operation in upper part of the channel (for example, as shown in example of FIG. 11b).

[0221] The following drawings are prepared to explain a specific example of the present specification. Since the names of specific devices or names of specific signals / messages / fields described in the drawings are provided by way of example, technical features of the present specification are not limited to specific names used in the following drawings.

[0222] FIGS. 11a and 11b illustrates an example of SSB location forLBT-exempt operation andLBT-based operation according to an embodiment of the present disclosure.

[0223] FIG.11a shows examples of SSB location for LBT-exempt operation. FIG.11b shows examples of SSB location for LBT-based operation.

[0224] In FIGS. 11a and 11b, SCS of 120kHz is applied. SSB center means center frequency of SSB. SSB Flow may mean lower edge of SSB. SSB Fhigh may mean higher edge of SSB. Offset to channel center may mean distance from channel center based on 100MHz channel raster.

[0225] Based on the step size vector with length of 19: < 6 6 6 6 4 6 6 6 6 6 6 6 6 6 4 6 6 6 6 > defined in Table 10, spacing between frequency locations of SSB rasters may be 6*17.28MHz = 103.68 MHz or 4*17.28MHz =69.12. Because 100MHz of channel raster is not a integer multiple of 17.28MHz, step size vector with length of 19: < 6 6 6 6 4 6 6 6 6 6 6 6 6 6 4 6 6 6 6 > is defined to approximately align channel locations for SSB with channel rasters.

[0226] The GSCN entries and corresponding SSB frequencies may be defined as listed in Table 11.

[0227] LBT-exempt operationLBT-based operationNGSCNSSB Fcenter (MHz)NGSCNSSB Fcenter (MHz)16432389952641.1216442390052658.416492390552744.816502390652762.0816552391152848.4816562391252865.7616612391752952.1616622391852969.4416672392353055.8416682392453073.1216712392753124.9616722392853142.2416772393353228.6416782393453245.9216832393953332.3216842394053349.61689239455343616902394653453.2816952395153539.6816962395253556.9617012395753643.3617022395853660.6417072396353747.0417082396453764.3217132396953850.721714239705386817192397553954.417202397653971.6817252398154058.0817262398254075.3617292398554127.217302398654144.4817352399154230.8817362399254248.1617412399754334.5617422399854351.8417472400354438.2417482400454455.5217532400954541.9217542401054559.217592401554645.617602401654662.8817652402154749.2817662402254766.5617712402754852.9617722402854870.2417772403354956.6417782403454973.9217812403755025.7617822403855043.0417872404355129.4417882404455146.7217932404955233.1217942405055250.417992405555336.818002405655354.0818052406155440.4818062406255457.7618112406755544.1618122406855561.4418172407355647.8418182407455665.1218232407955751.5218242408055768.818292408555855.218302408655872.4818352409155958.8818362409255976.161839240955602818402409656045.2818452410156131.6818462410256148.9618512410756235.3618522410856252.6418572411356339.0418582411456356.3218632411956442.721864241205646018692412556546.418702412656563.6818752413156650.0818762413256667.3618812413756753.7618822413856771.0418872414356857.4418882414456874.7218912414756926.5618922414856943.8418972415357030.2418982415457047.5219032415957133.9219042416057151.219092416557237.619102416657254.8819152417157341.2819162417257358.5619212417757444.9619222417857462.2419272418357548.6419282418457565.9219332418957652.3219342419057669.61939241955775619402419657773.2819452420157859.6819462420257876.9619492420557928.819502420657946.0819552421158032.4819562421258049.7619612421758136.1619622421858153.4419672422358239.8419682422458257.1219732422958343.5219742423058360.819792423558447.219802423658464.4819852424158550.8819862424258568.1619912424758654.5619922424858671.8419972425358758.2419982425458775.5220012425758827.3620022425858844.6420072426358931.0420082426458948.3220132426959034.722014242705905220192427559138.420202427659155.6820252428159242.0820262428259259.3620312428759345.7620322428859363.0420372429359449.4420382429459466.7220432429959553.1220442430059570.420492430559656.820502430659674.0820552431159760.4820562431259777.7620592431559829.620602431659846.8820652432159933.2820662432259950.5620712432760036.9620722432860054.2420772433360140.6420782433460157.9220832433960244.3220842434060261.62089243456034820902434660365.2820952435160451.6820962435260468.9621012435760555.3621022435860572.6421072436360659.0421082436460676.3221112436760728.1621122436860745.4421172437360831.8421182437460849.1221232437960935.5221242438060952.821292438561039.221302438661056.4821352439161142.8821362439261160.1621412439761246.5621422439861263.8421472440361350.2421482440461367.5221532440961453.9221542441061471.221592441561557.621602441661574.8821652442161661.2821662442261678.5621692442561730.421702442661747.6821752443161834.0821762443261851.3621812443761937.7621822443861955.0421872444362041.4421882444462058.7221932444962145.1221942445062162.421992445562248.822002445662266.0822052446162352.4822062446262369.7622112446762456.1622122446862473.4422172447362559.8422182447462577.1222212447762628.9622222447862646.2422272448362732.6422282448462749.9222332448962836.3222342449062853.62239244956294022402449662957.2822452450163043.6822462450263060.9622512450763147.3622522450863164.6422572451363251.0422582451463268.3222632451963354.722264245206337222692452563458.422702452663475.6822752453163562.0822762453263579.3622792453563631.222802453663648.4822852454163734.8822862454263752.1622912454763838.5622922454863855.8422972455363942.2422982455463959.5223032455964045.9223042456064063.223092456564149.623102456664166.8823152457164253.2823162457264270.5623212457764356.9623222457864374.2423272458364460.6423282458464477.9223312458764529.7623322458864547.0423372459364633.4423382459464650.7223432459964737.1223442460064754.423492460564840.823502460664858.0823552461164944.4823562461264961.7623612461765048.1623622461865065.4423672462365151.8423682462465169.1223732462965255.5223742463065272.823792463565359.223802463665376.4823852464165462.8823862464265480.162389246456553223902464665549.2823952465165635.6823962465265652.9624012465765739.3624022465865756.6424072466365843.0424082466465860.3224132466965946.722414246706596424192467566050.424202467666067.6824252468166154.0824262468266171.3624312468766257.7624322468866275.0424372469366361.4424382469466378.7224412469766430.5624422469866447.8424472470366534.2424482470466551.5224532470966637.9224542471066655.224592471566741.624602471666758.8824652472166845.2824662472266862.5624712472766948.9624722472866966.2424772473367052.6424782473467069.9224832473967156.3224842474067173.62489247456726024902474667277.2824952475167363.6824962475267380.9624992475567432.825002475667450.0825052476167536.4825062476267553.7625112476767640.1625122476867657.4425172477367743.8425182477467761.1225232477967847.5225242478067864.825292478567951.225302478667968.4825352479168054.8825362479268072.1625412479768158.5625422479868175.8425472480368262.2425482480468279.5225512480768331.3625522480868348.6425572481368435.0425582481468452.3225632481968538.722564248206855625692482568642.425702482668659.6825752483168746.0825762483268763.3625812483768849.7625822483868867.0425872484368953.4425882484468970.7225932484969057.1225942485069074.425992485569160.826002485669178.0826052486169264.4826062486269281.7626092486569333.626102486669350.8826152487169437.2826162487269454.5626212487769540.9626222487869558.2426272488369644.6426282488469661.9226332488969748.3226342489069765.62639248956985226402489669869.2826452490169955.6826462490269972.9626512490770059.3626522490870076.6426572491370163.0426582491470180.3226612491770232.1626622491870249.4426672492370335.8426682492470353.1226732492970439.5226742493070456.826792493570543.226802493670560.4826852494170646.8826862494270664.1626912494770750.5626922494870767.8426972495370854.2426982495470871.5227032495970957.9227042496070975.2

[0228] Table 11 shows examples of GSCN entries for 100MHz channel raster in 52.6 GHz -71GHz frequency range for LBT-exempt operation and LBT-based operation. Table 11 is defined based on Table 10 and Table 8.

[0229] For example, Table 10 and 11 shows examples of 120kHz SCS raster for whole range from 52.6 GHz to 71GHz. 19 long step size vector for 120kHz SCS < 6 6 6 6 4 6 6 6 6 6 6 6 6 6 4 6 6 6 6 > was applied for both frequency location of SSB raster for LBT-exempt operation and LBT based operation.

[0230] LBT-exempt operation: "M" Starting point GSCN= 23 899 (52 641.12MHz) and last raster point GSCN= 24 959 (70 957.92MHz). 19 long step size vector for 120kHz SCS < 6 6 6 6 4 6 6 6 6 6 6 6 6 6 4 6 6 6 6 > was applied.

[0231] LBT-based operation: "M+1" Starting point GSCN= 23 900 (52 658.40MHz) and last raster point GSCN= 24 960 (70 975.20MHz) 19 long step size vector for 120kHz SCS < 6 6 6 6 4 6 6 6 6 6 6 6 6 6 4 6 6 6 6 > was applied.

[0232] Frequency location of SSB for LBT-based operation may be defined based on Frequency location of SSB for LBT-exempt operation by applying delta value (for example, "+1" of "M+1"). On the other way, Frequency location of SSB for LBT-exempt operation may be defined based on Frequency location of SSB for LBT-based operation (M+1) by applying delta value (for example, "-1" of "M" with respect to "M+1").

[0233] Examples for GSCN entries for 1080MHz raster in 57-71GHz frequency range for LBT-based operation are shown in Table 12.

[0234] LBT-based operationNGSCNSSB Fcenter (MHz)19722422858326.2420342429059397.620972435360486.2421592441561557.622222447862646.2422842454063717.623472460364806.2424092466565877.624722472866966.2425342479068037.625972485369126.24

[0235] Table 12 shows examples of GSCN entries for 1080MHz raster in 57-71GHz frequency range for LBT-based operation. Table 12 is defined based on Table 10 and Table 8. Table 12 is applied for channel raster of 1080 MHz. For example, 2 long step size vector for 120kHz SCS < 62,63 > was applied for frequency location of SSB raster for LBT-based operation.

[0236] 2. Second Example of the disclosure of the present specification

[0237] This second example is similar to the first example with modification that the order of the LBT-based and LBT-except channels within the 100MHz raster are swapped. In this case the SSB raster entries may be defined as shown in Table 13.

[0238] In this case the LBT-based SSB is located in the middle part of the channel and the other one (N+1) for LBT-exempt operation is located in upper part of the channel.

[0239] The GSCN entries and corresponding SSB frequencies may be defined as listed in Table 14.

[0240] NR Operating BandSS Block SCSSS Block pattern(Note 1 applied)Range of GSCN(First - <Step size> - Last)nXXX120kHz23899 < NOTE2 > 24959 (Note 3 applied)23900 < NOTE2 > 24960 (Note 4 applied)nYYY120kHz24230 < 62,63 > 24855 (Note 4 applied)NOTE1: SS Block pattern is defined in above mentioned 3GPP TS 38.213 V16.4.0Clause 4.NOTE2: Step size vector with length of 19: < 6 6 6 6 4 6 6 6 6 6 6 6 6 6 4 6 6 6 6 >NOTE3: For LBT-based operationNOTE4: For LBT-exempt operation

[0241] Table 13 shows examples of applicable SSB raster entries per operating band.

[0242] LBT-based operationLBT-exempt operationNGSCNSSB Fcenter (MHz)NGSCNSSB Fcenter (MHz)16432389952641.1216442390052658.416492390552744.816502390652762.0816552391152848.4816562391252865.7616612391752952.1616622391852969.4416672392353055.8416682392453073.1216712392753124.9616722392853142.2416772393353228.6416782393453245.9216832393953332.3216842394053349.61689239455343616902394653453.2816952395153539.6816962395253556.9617012395753643.3617022395853660.6417072396353747.0417082396453764.3217132396953850.721714239705386817192397553954.417202397653971.6817252398154058.0817262398254075.3617292398554127.217302398654144.4817352399154230.8817362399254248.1617412399754334.5617422399854351.8417472400354438.2417482400454455.5217532400954541.9217542401054559.217592401554645.617602401654662.8817652402154749.2817662402254766.5617712402754852.9617722402854870.2417772403354956.6417782403454973.9217812403755025.7617822403855043.0417872404355129.4417882404455146.7217932404955233.1217942405055250.417992405555336.818002405655354.0818052406155440.4818062406255457.7618112406755544.1618122406855561.4418172407355647.8418182407455665.1218232407955751.5218242408055768.818292408555855.218302408655872.4818352409155958.8818362409255976.161839240955602818402409656045.2818452410156131.6818462410256148.9618512410756235.3618522410856252.6418572411356339.0418582411456356.3218632411956442.721864241205646018692412556546.418702412656563.6818752413156650.0818762413256667.3618812413756753.7618822413856771.0418872414356857.4418882414456874.7218912414756926.5618922414856943.8418972415357030.2418982415457047.5219032415957133.9219042416057151.219092416557237.619102416657254.8819152417157341.2819162417257358.5619212417757444.9619222417857462.2419272418357548.6419282418457565.9219332418957652.3219342419057669.61939241955775619402419657773.2819452420157859.6819462420257876.9619492420557928.819502420657946.0819552421158032.4819562421258049.7619612421758136.1619622421858153.4419672422358239.8419682422458257.1219732422958343.5219742423058360.819792423558447.219802423658464.4819852424158550.8819862424258568.1619912424758654.5619922424858671.8419972425358758.2419982425458775.5220012425758827.3620022425858844.6420072426358931.0420082426458948.3220132426959034.722014242705905220192427559138.420202427659155.6820252428159242.0820262428259259.3620312428759345.7620322428859363.0420372429359449.4420382429459466.7220432429959553.1220442430059570.420492430559656.820502430659674.0820552431159760.4820562431259777.7620592431559829.620602431659846.8820652432159933.2820662432259950.5620712432760036.9620722432860054.2420772433360140.6420782433460157.9220832433960244.3220842434060261.62089243456034820902434660365.2820952435160451.6820962435260468.9621012435760555.3621022435860572.6421072436360659.0421082436460676.3221112436760728.1621122436860745.4421172437360831.8421182437460849.1221232437960935.5221242438060952.821292438561039.221302438661056.4821352439161142.8821362439261160.1621412439761246.5621422439861263.8421472440361350.2421482440461367.5221532440961453.9221542441061471.221592441561557.621602441661574.8821652442161661.2821662442261678.5621692442561730.421702442661747.6821752443161834.0821762443261851.3621812443761937.7621822443861955.0421872444362041.4421882444462058.7221932444962145.1221942445062162.421992445562248.822002445662266.0822052446162352.4822062446262369.7622112446762456.1622122446862473.4422172447362559.8422182447462577.1222212447762628.9622222447862646.2422272448362732.6422282448462749.9222332448962836.3222342449062853.62239244956294022402449662957.2822452450163043.6822462450263060.9622512450763147.3622522450863164.6422572451363251.0422582451463268.3222632451963354.722264245206337222692452563458.422702452663475.6822752453163562.0822762453263579.3622792453563631.222802453663648.4822852454163734.8822862454263752.1622912454763838.5622922454863855.8422972455363942.2422982455463959.5223032455964045.9223042456064063.223092456564149.623102456664166.8823152457164253.2823162457264270.5623212457764356.9623222457864374.2423272458364460.6423282458464477.9223312458764529.7623322458864547.0423372459364633.4423382459464650.7223432459964737.1223442460064754.423492460564840.823502460664858.0823552461164944.4823562461264961.7623612461765048.1623622461865065.4423672462365151.8423682462465169.1223732462965255.5223742463065272.823792463565359.223802463665376.4823852464165462.8823862464265480.162389246456553223902464665549.2823952465165635.6823962465265652.9624012465765739.3624022465865756.6424072466365843.0424082466465860.3224132466965946.722414246706596424192467566050.424202467666067.6824252468166154.0824262468266171.3624312468766257.7624322468866275.0424372469366361.4424382469466378.7224412469766430.5624422469866447.8424472470366534.2424482470466551.5224532470966637.9224542471066655.224592471566741.624602471666758.8824652472166845.2824662472266862.5624712472766948.9624722472866966.2424772473367052.6424782473467069.9224832473967156.3224842474067173.62489247456726024902474667277.2824952475167363.6824962475267380.9624992475567432.825002475667450.0825052476167536.4825062476267553.7625112476767640.1625122476867657.4425172477367743.8425182477467761.1225232477967847.5225242478067864.825292478567951.225302478667968.4825352479168054.8825362479268072.1625412479768158.5625422479868175.8425472480368262.2425482480468279.5225512480768331.3625522480868348.6425572481368435.0425582481468452.3225632481968538.722564248206855625692482568642.425702482668659.6825752483168746.0825762483268763.3625812483768849.7625822483868867.0425872484368953.4425882484468970.7225932484969057.1225942485069074.425992485569160.826002485669178.0826052486169264.4826062486269281.7626092486569333.626102486669350.8826152487169437.2826162487269454.5626212487769540.9626222487869558.2426272488369644.6426282488469661.9226332488969748.3226342489069765.62639248956985226402489669869.2826452490169955.6826462490269972.9626512490770059.3626522490870076.6426572491370163.0426582491470180.3226612491770232.1626622491870249.4426672492370335.8426682492470353.1226732492970439.5226742493070456.826792493570543.226802493670560.4826852494170646.8826862494270664.1626912494770750.5626922494870767.8426972495370854.2426982495470871.5227032495970957.9227042496070975.2

[0243] Table 14 shows examples of GSCN entries for 100MHz channel raster in 52.6 GHz-71GHz frequency range for LBT-exempt operation and LBT-based operation. Table 14 is defined based on Table 13 and Table 8.

[0244] For example, Table 13 and 14 shows examples of 120kHz SCS raster same as the first example above, but order of LBT-exempt and LBT-based is swapped

[0245] 19 long step size vector for 120kHz SCS < 6 6 6 6 4 6 6 6 6 6 6 6 6 6 4 6 6 6 6 > was applied for both frequency location of SSB raster for LBT-exempt operation and LBT based operation.

[0246] LBT-based operation: "M" Starting point GSCN= 23 899 (52 641.12MHz) and last raster point GSCN= 24 959 (70 957.92MHz). 19 long step size vector for 120kHz SCS < 6 6 6 6 4 6 6 6 6 6 6 6 6 6 4 6 6 6 6 > was applied.

[0247] LBT-exempt operation: "M+1" Starting point GSCN= 23 900 (52 658.40MHz) and last raster point GSCN= 24 960 (70 975.20MHz) 19 long step size vector for 120kHz SCS < 6 6 6 6 4 6 6 6 6 6 6 6 6 6 4 6 6 6 6 > was applied.

[0248] Frequency location of SSB for LBT-exempt operation may be defined based on Frequency location of SSB for LBT-based operation by applying delta value (for example, "+1" of "M+1"). On the other way, Frequency location of SSB for LBT-based operation may be defined based on Frequency location of SSB for LBT-exempt operation (M+1) by applying delta value (for example, "-1" of "M" with respect to "M+1").

[0249] Examples for GSCN entries for 1080MHz raster in 57-71GHz frequency range for LBT-based operation are shown in Table 15.

[0250] LBT-based operationNGSCNSSB Fcenter (MHz)19722422858326.2420342429059397.620972435360486.2421592441561557.622222447862646.2422842454063717.623472460364806.2424092466565877.624722472866966.2425342479068037.625972485369126.24

[0251] Table 15 shows examples of GSCN entries for 1080MHz raster in 57-71GHz frequency range for LBT-based operation. Table 15 is defined based on Table 13 and Table 8. Table 15 is applied for channel raster of 1080 MHz. For example, 2 long step size vector for 120kHz SCS < 62,63 > was applied for frequency location of SSB raster for LBT-based operation.

[0252] 3. Third Example of the disclosure of the present specification

[0253] This example shows SSB configuration for 52.6GHz-71GHz frequency range with 100MHz wide channels for SSB with 120kHz SCS and SSB configuration for 52.6GHz-71GHz frequency range with 400MHz wide channels for SSB with 480kHz SCS. The 400MHz raster is also applicable for operation with 960kHz SCS and 2GHz or 2.16Ghz wide channels.

[0254] In order to achieve 100MHz down selected raster a step size vector with length of 19 and values of < 6 6 6 6 4 6 6 6 6 6 6 6 6 6 4 6 6 6 6 > need to be used.

[0255] For 400MHz down selected raster a step size vector with length of 19 and values of < 22 24 24 22 24 22 24 24 22 24 22 24 22 24 24 22 24 22 24 > and < 22 24 24 22 24 22 24 24 22 24 22 24 22 24 24 22 24 22 24 > need to be used.

[0256] The logic for further down-selecting the 100MHz entries for 400MHz channels is shown in FIG. 12.

[0257] The following drawings are prepared to explain a specific example of the present specification. Since the names of specific devices or names of specific signals / messages / fields described in the drawings are provided by way of example, technical features of the present specification are not limited to specific names used in the following drawings.

[0258] FIG. 12 illustrates an example of frequency position of SSB raster for 100MHz channels and 400MHz channels according to an embodiment of the present disclosure.

[0259] FIG. 12 shows examples of description on selection of GSCN locations for 100MHz channels and further down-selection for 400MHz.

[0260] Herein, "further down-selection" may mean that frequency location of SSB raster for 400MHz channel raster is defined by down-selecting frequency location of SSB raster for 100MHz channel raster, as shown in Examples of FIG. 12.

[0261] Tables 15 and 16 show the examples on how the above mentioned SSB locations can be defined in cases when LBT-exempt SSB is located at middle-lower part of the channel and LBT-based SSB is located above it and vice versa. The center frequencies for 100MHz channels are shown earlier in Table 11 and Table 14 and further down-selected locations for 400MHz corresponding to Table 16 and Table 17 are shown in Table 18 and Table 19.

[0262] NR Operating BandSS Block SCSSS Block pattern (Note 1 applied)Range of GSCN(First - <Step size> - Last)nXXX120kHz23899 < NOTE2 > 24959 (Note 5 applied)23900 < NOTE2 > 24960 (Note 6 applied)480kHz23905 < NOTE3 > 24947 (Note 5 applied)23911 < NOTE4 > 24953 (Note 6 applied)NOTE1: SS Block pattern is defined in sub clause 4.1 in 3GPP TS 38.213 V16.4.0NOTE2: Step size vector with length of 19: < 6 6 6 6 4 6 6 6 6 6 6 6 6 6 4 6 6 6 6 >NOTE3: Step size vector with length of 19: < 22 24 24 22 24 22 24 24 22 24 22 24 22 24 24 22 24 22 24 >NOTE4: Step size vector with length of 19: < 22 24 24 22 24 22 24 22 24 24 22 24 22 24 22 24 24 22 24>NOTE5: For LBT-exempt operationNOTE6: For LBT-based operation

[0263] Table 16 shows examples of applicable SSB raster entries per operating band.

[0264] NR Operating BandSS Block SCSSS Block pattern (Note 1 applied)Range of GSCN(First - <Step size> - Last)nXXX120kHz23899 < NOTE2 > 24959 (Note 5 applied)23900 < NOTE2 > 24960 (Note 6 applied)480kHz23905 < NOTE3 > 24947 (Note 5 applied)23911 < NOTE4 > 24953 (Note 6 applied)NOTE1: SS Block pattern is defined in sub clause 4.1 in 3GPP TS 38.213 V16.4.0NOTE2: Step size vector with length of 19: < 6 6 6 6 4 6 6 6 6 6 6 6 6 6 4 6 6 6 6 >NOTE3: Step size vector with length of 19: < 22 24 24 22 24 22 24 24 22 24 22 24 22 24 24 22 24 22 24 >NOTE4: Step size vector with length of 19: < 22 24 24 22 24 22 24 22 24 24 22 24 22 24 22 24 24 22 24>NOTE5: For LBT-based operationNOTE6: For LBT-exempt operation

[0265] Table 17 shows examples of applicable SSB raster entries per operating band.

[0266] The GSCN entries and corresponding SSB frequencies for Table 16 may be defined as listed in Table 18.

[0267] LBT-exempt operationLBT-based operationNGSCNSSB Fcenter (MHz)NGSCNSSB Fcenter (MHz)16492390552744.816552391152848.4816712392753124.9616772393353228.6416952395153539.6817012395753643.3617192397553954.417252398154058.0817412399754334.5617472400354438.2417652402154749.2817712402754852.9617872404355129.4417932404955233.1218112406755544.1618172407355647.8418352409155958.881839240955602818572411356339.0418632411956442.7218812413756753.7618872414356857.4419032415957133.9219092416557237.619272418357548.6419332418957652.3219492420557928.819552421158032.4819732422958343.5219792423558447.219972425358758.2420012425758827.3620192427559138.420252428159242.0820432429959553.1220492430559656.820652432159933.2820712432760036.962089243456034820952435160451.6821112436760728.1621172437360831.8421352439161142.8821412439761246.5621592441561557.621652442161661.2821812443761937.7621872444362041.4422052446162352.4822112446762456.1622272448362732.6422332448962836.3222512450763147.3622572451363251.0422752453163562.0822792453563631.222972455363942.2423032455964045.9223212457764356.9623272458364460.6423432459964737.1223492460564840.823672462365151.8423732462965255.522389246456553223952465165635.6824132466965946.7224192467566050.424372469366361.4424412469766430.5624592471566741.624652472166845.2824832473967156.322489247456726025052476167536.4825112476767640.1625292478567951.225352479168054.8825512480768331.3625572481368435.0425752483168746.0825812483768849.7625992485569160.826052486169264.4826212487769540.9626272488369644.6426452490169955.6826512490770059.3626672492370335.8426732492970439.5226912494770750.5626972495370854.24

[0268] Table 18 shows examples of GSCN entries for 400MHz raster in 52.6-71GHz frequency range for LBT-exempt and LBT-based operation, based on Table 16.

[0269] The GSCN entries and corresponding SSB frequencies for Table 17 may be defined as listed in Table 19.

[0270] LBT-based operationLBT-exempt operationNGSCNSSB Fcenter (MHz)NGSCNSSB Fcenter (MHz)16492390552744.816552391152848.4816712392753124.9616772393353228.6416952395153539.6817012395753643.3617192397553954.417252398154058.0817412399754334.5617472400354438.2417652402154749.2817712402754852.9617872404355129.4417932404955233.1218112406755544.1618172407355647.8418352409155958.881839240955602818572411356339.0418632411956442.7218812413756753.7618872414356857.4419032415957133.9219092416557237.619272418357548.6419332418957652.3219492420557928.819552421158032.4819732422958343.5219792423558447.219972425358758.2420012425758827.3620192427559138.420252428159242.0820432429959553.1220492430559656.820652432159933.2820712432760036.962089243456034820952435160451.6821112436760728.1621172437360831.8421352439161142.8821412439761246.5621592441561557.621652442161661.2821812443761937.7621872444362041.4422052446162352.4822112446762456.1622272448362732.6422332448962836.3222512450763147.3622572451363251.0422752453163562.0822792453563631.222972455363942.2423032455964045.9223212457764356.9623272458364460.6423432459964737.1223492460564840.823672462365151.8423732462965255.522389246456553223952465165635.6824132466965946.7224192467566050.424372469366361.4424412469766430.5624592471566741.624652472166845.2824832473967156.322489247456726025052476167536.4825112476767640.1625292478567951.225352479168054.8825512480768331.3625572481368435.0425752483168746.0825812483768849.7625992485569160.826052486169264.4826212487769540.9626272488369644.6426452490169955.6826512490770059.3626672492370335.8426732492970439.5226912494770750.5626972495370854.24

[0271] Table 19 shows examples of GSCN entries for 400MHz raster in 52.6-71GHz frequency range for LBT-exempt and LBT-based operation, based on Table 17.

[0272] Table 16 and table 18, Table 17 and Table 19 show examples of 120kHz and 480kHz SCS raster proposal for whole range 52.6 > 71GHz.

[0273] For 120kHz SCS, 19 long step size vector < 6 6 6 6 4 6 6 6 6 6 6 6 6 6 4 6 6 6 6 > is applied as in the first example of the disclosure of the present specification and the second example of the disclosure of the present specification.

[0274] For 480kHz, SCS 19 long step size vectors < 22 24 24 22 24 22 24 24 22 24 22 24 22 24 24 22 24 22 24 > and < 22 24 24 22 24 22 24 24 22 24 22 24 22 24 24 22 24 22 24 > are applied.

[0275] Starting points and endpoints may be GSCN= 23905 (52 744.80MHz) / GSCN= 24947 (70 750.56MHz) for LBT-exempt operation in Table 18 and for LBT-based operation in Table 19. Starting points and endpoints may be GSCN= 23 911 (52 848.48MHz) / GSCN= 24 953 (70 854.24MHz) for LBT-based operation in Table 18 and for LBT-exempt operation in Table 19.

[0276] Example for definition of SSB raster entries for 57GHz-71GHz band within the 52.6-71GHz frequency range for 120kHz and 480kHz SCS is shown in Table 20. As shown in Table 20, range of GSCN is configured differently from Table 16 or Table 17, based on frequency range of 57GHz to 71GHz.

[0277] For Unlicensed band between 57-71GHz, same logic explained in third example of the present specification may be applied, but starting point is adjusted to match with 57 000MHz instead of 52 600 MHz, as shown in examples of Table 20.

[0278] NR Operating BandSS Block SCSSS Block pattern (Note 1 applied)Range of GSCN(First - <Step size> - Last)nYYY57-71GHz　120kHz　24153 < NOTE2 > 2495924154 < NOTE2 > 24960480kHz　24159 < NOTE3 > 2494724165 < NOTE4 > 24953NOTE1: SS Block pattern is defined in sub clause 4.1 in 3GPP TS 38.213 V16.4.0NOTE2: Step size vector with length of 19: < 6 6 6 6 6 6 6 6 4 6 6 6 6 6 6 6 6 4 6 >NOTE3: Step size vector with length of 19: < 24 22 24 24 22 24 22 24 22 24 24 22 24 22 24 24 22 24 22 >NOTE4: Step size vector with length of 19: < 24 22 24 22 24 24 22 24 22 24 24 22 24 22 24 22 24 24 22 >

[0279] Table 20 shows examples for defining the SS raster entries for 57GHz-71GHz frequency range.

[0280] According to various examples shown in First Example to Third Example of the disclosure of the present specification, frequency location for SSB raster (or sync raster) may be defined based on at least one of step size vector, SCS, and operation type (e.g. LBT-exempt operation or LBT-based operation). For example, for 120kHz SCS, frequency location for SSB raster may be defined based on step size vector with length of 19: < 6 6 6 6 4 6 6 6 6 6 6 6 6 6 4 6 6 6 6 >.

[0281] According to various examples shown in First Example to Third Example of the disclosure of the present specification, frequency location for SSB raster (or sync raster) for LBT-exempt operation may be defined based on LBT-based operation and delta value (e.g. "1" in Table 10, 13, 16, 17). On the other hand, frequency location for SSB raster (or sync raster) for LBT-based operation may be defined based on LBT-exempt operation and delta value (e.g. "1" in Table 10, 13, 16, 17).

[0282] According to various examples shown in First Example to Third Example of the disclosure of the present specification, frequency location for SSB raster (or sync raster) for 480kHz SCS may be defined based on down selecting from frequency location for SSB raster (or sync raster) for 120kHz SCS.

[0283] The following drawings are prepared to explain a specific example of the present specification. Since the names of specific devices or names of specific signals / messages / fields described in the drawings are provided by way of example, technical features of the present specification are not limited to specific names used in the following drawings.

[0284] FIG. 13 illustrates an example of operations of aUEaccording to an embodiment of the present disclosure.

[0285] FIG. 13 shows an example of operations of the UE. UE may perform operations described in the present specification, even if they are not shown in FIG.13. Herein, a network may be gNB, base station, serving cell, etc.

[0286] FIG. 13 may show examples of an operation of the UE based on descriptions of First Example to Third Example of the disclosure of the present specification.

[0287] In step S1301, the UE may determine frequency position for SS block. For example, the UE may determine at least on frequency position for SS block based on examples such as Table 10 to Table 20.

[0288] In step S1302, the UE may receive SS block based on the frequency position.

[0289] The UE may further perform random access procedure based on the received SS block. For example, the random access procedure may be performed based on examples shown in FIG. 4 to FIG. 10.

[0290] According to some embodiment of the present disclosure, 5G NR system with GSCN and Channel raster scheme where different GSCN number and frequency may be used for accessing same channel depending on the channel access scheme, LBT-based operation and / or LBT exempt operation.

[0291] For example, the location (frequency) of the GSCN may indicate certain kind of gNB operation (e.g. LBT based operation and / or LBT-exempt operation) during initial synchronization process, which makes it possible for the UE to optimize the synchronization operations for indicated gNB operation.

[0292] For example, GSCN location (frequency) in the center part of the channel may be used for LBT-exempt operation and lower (or higher) frequency within the channel may be used for LBT-based operation or vice versa

[0293] For example, GSCN location (frequency)in the lower part of the channel may be used for LBT-exempt operation and upper part of the channel may be used for LBT-based operation or vice versa

[0294] For example, GSCN for LBT-exempt operation may be located (frequency) in lower, center or upper part of the band and the GSCN location for LBT-based operation may be derived from earlier one with offset, function of formula.

[0295] Hereinafter, an apparatus(for example, UE) in a wireless communication system, according to some embodiments of the present disclosure, will be described.

[0296] For example, the apparatus may include at least one processor, at least one transceiver, and at least one memory.

[0297] For example, the at least one processor may be configured to be coupled operably with the at least one memory and the at least one transceiver.

[0298] For example, the processor may be configured to perform operations explained in various examples of the present specification. For example, the processor may be configured to perform operations including: determining at least one frequency position for a SS block; and receiving, from a base station, the SS block based on the at least one frequency position, wherein the frequency position for the SS block for a frequency range bigger than 52.6 GHz is defined based on a start position, and a step size unit of 17.28MHz, and wherein the frequency position of the SS block is defined based on the start position, and 19 frequency positions based on multiplying the step size unit and step size vector <6 6 6 6 4 6 6 6 6 6 6 6 6 6 4 6 6 6 6>.

[0299] Hereinafter, a processor for in a wireless communication system, according to some embodiments of the present disclosure, will be described.

[0300] For example, the processor may be configured to perform operations including: determining at least one frequency position for a SS block; and receiving, from a base station, the SS block based on the at least one frequency position, wherein the frequency position for the SS block for a frequency range bigger than 52.6 GHz is defined based on a start position, and a step size unit of 17.28MHz, and wherein the frequency position of the SS block is defined based on the start position, and 19 frequency positions based on multiplying the step size unit and step size vector <6 6 6 6 4 6 6 6 6 6 6 6 6 6 4 6 6 6 6>.

[0301] Hereinafter, a non-transitory computer-readable medium has stored thereon a plurality of instructions in a wireless communication system, according to some embodiments of the present disclosure, will be described.

[0302] According to some embodiment of the present disclosure, 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. For example, a method performed by a wireless device in a wireless communication may be implemented in hardware, software, firmware, or any combination thereof. For example, 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.

[0303] Some example of storage medium is coupled to the processor such that the processor can read information from the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. For other example, the processor and the storage medium may reside as discrete components.

[0304] The computer-readable medium may include a tangible and non-transitory computer-readable storage medium.

[0305] For example, 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. Non-transitory computer-readable media may also include combinations of the above.

[0306] In addition, 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.

[0307] According to some embodiment of the present disclosure, a non-transitory computer-readable medium has stored thereon a plurality of instructions.

[0308] For example, the stored a plurality of instructions may be executed by a processor of a UE to perform operations including: determining at least one frequency position for a SS block; and receiving, from a base station, the SS block based on the at least one frequency position, wherein the frequency position for the SS block for a frequency range bigger than 52.6 GHz is defined based on a start position, and a step size unit of 17.28MHz, and wherein the frequency position of the SS block is defined based on the start position, and 19 frequency positions based on multiplying the step size unit and step size vector <6 6 6 6 4 6 6 6 6 6 6 6 6 6 4 6 6 6 6>.

[0309] Advantageous effects which can be obtained through specific embodiments of the present disclosure. For example, when different SSB locations are used for different types of network operation, LBT-exempt or LBT based, the UE may already know during initial synchronization process which kind of network operation is required. UE may also select to look only for licensed or un-licensed networks, which will further accelerate the initial synchronization process. The new sparser SSB raster may further simplify the initial synchronization process. As the minimum supported CBW for FR2-2 is 100MHz, it is not necessary to have more than 1 SSB location per 100MHz of the spectrum. Simpler UE operation and gNB operation may be implemented for un-licensed operation (LBT-based), where 5G system will directly compete with technical specifications of IEEE systems where number of supported raster locations is 11. Embodiments of the present disclosure may prevent a problem related to a direct reuse FR2-1 generic raster, which leads to 800+ locations for 5G system. With proposed scheme the number of raster locations for un-licensed operation may be 210 (total for 120k and 480k SSBs). Faster and simpler initial synchronization may improve the user experience though faster network discovery time and lower power consumption that may improve the battery operating time.

[0310] In the above exemplary systems, although the methods have been described on the basis of the flowcharts using a series of the steps or blocks, the present disclosure is not limited to the sequence of the steps, and some of the steps may be performed at different sequences from the remaining steps or may be performed simultaneously with the remaining steps. Furthermore, those skilled in the art will understand that the steps shown in the flowcharts are not exclusive and may include other steps or one or more steps of the flowcharts may be deleted without affecting the scope of the present disclosure.

[0311] Advantageous effects which can be obtained through specific embodiments of the present disclosure are not limited to the advantageous effects listed above. For example, there may be a variety of technical effects that a person having ordinary skill in the related art can understand and / or derive from the present disclosure. Accordingly, the specific effects of the present disclosure are not limited to those explicitly described herein, but may include various effects that may be understood or derived from the technical features of the present disclosure.

[0312] Claims in the present disclosure can be combined in a various way. For instance, technical features in method claims of the present disclosure can be combined to be implemented or performed in an apparatus, and technical features in apparatus claims can be combined to be implemented or performed in a method. Further, technical features in method claim(s) and apparatus claim(s) can be combined to be implemented or performed in an apparatus. Further, technical features in method claim(s) and apparatus claim(s) can be combined to be implemented or performed in a method. Other implementations are within the scope of the following claims.

Claims

1.A method for performing communication, the method performed by a user equipment (UE), the method comprising:determining at least one frequency position for a synchronization signal (SS) block; andreceiving, from a base station, the SS block based on the at least one frequency position,wherein the frequency position for the SS block for a frequency range bigger than 52.6 GHz is defined based on a start position, and a step size unit of 17.28MHz, andwherein the frequency position of the SS block is defined based on the start position, and 19 frequency positions based on multiplying the step size unit and step size vector <6 6 6 6 4 6 6 6 6 6 6 6 6 6 4 6 6 6 6>.2.The method of claim 1, further comprising:performing a random access procedure for the base station based on the received SS block.3.The method of claim 2, further comprising:wherein the performing of the random access procedure further comprising:transmitting random access preamble based on the SS block to a base station;receiving response message from the base station.4.The method of claim 1, wherein the receiving further comprises:receiving a first SS block for Listen Before Talk (LBT) based operation based on at least one frequency position for the first SS block; andreceiving a second SS block for LBT-exempt operation based on at least one frequency position for the second SS block.5.The method of claim 4,wherein the at least one frequency position for the second SS block is defined based on the at least one frequency position for the first SS block and offset value.6.The method of claim 1,for subcarrier spacing (SCS) of 120 kHz, the at least one frequency position for the SS block is defined based on the start position, and 19 frequency positions based on multiplying the step size unit and step size vector <6 6 6 6 4 6 6 6 6 6 6 6 6 6 4 6 6 6 6>.7.The method of claim 6,for SCS of 480 kHz, the at least one frequency position of the SS block is defined based on the frequency position of the SS block for SCS of 120 kHz,8.The method of claim 6,for SCS of 480 kHz, the at least one frequency position of the SS block is defined based on the start position, and 19 frequency positions based on multiplying the step size unit and step size vector < 22 24 24 22 24 22 24 24 22 24 22 24 22 24 24 22 24 22 24 >, < 22 24 24 22 24 22 24 22 24 24 22 24 22 24 22 24 24 22 24>, < 24 22 24 24 22 24 22 24 22 24 24 22 24 22 24 24 22 24 22 >, or < 24 22 24 22 24 24 22 24 22 24 24 22 24 22 24 22 24 24 22 >.9.A User Equipment (UE) for performing communication, the UE comprising:at least processor; andat least one computer memory operably connectable to the at least one processor,wherein the at least one processor is configured to perform operations comprising:determining at least one frequency position for a synchronization signal (SS) block; andreceiving, from a base station, the SS block based on the at least one frequency position,wherein the frequency position for the SS block for a frequency range bigger than 52.6 GHz is defined based on a start position, and a step size unit of 17.28MHz, andwherein the frequency position of the SS block is defined based on the start position, and 19 frequency positions based on multiplying the step size unit and step size vector <6 6 6 6 4 6 6 6 6 6 6 6 6 6 4 6 6 6 6>.10.A wireless communication device operating in a wireless communication system, the wireless communication device comprising:at least processor; andat least one computer memory operably connectable to the at least one processor,wherein the at least one processor is configured to perform operations comprising:determining at least one frequency position for a synchronization signal (SS) block; andobtaining the SS block based on the at least one frequency position,wherein the frequency position for the SS block for a frequency range bigger than 52.6 GHz is defined based on a start position, and a step size unit of 17.28MHz, andwherein the frequency position of the SS block is defined based on the start position, and 19 frequency positions based on multiplying the step size unit and step size vector <6 6 6 6 4 6 6 6 6 6 6 6 6 6 4 6 6 6 6>.11.At least one computer readable medium (CRM) storing instructions that, based on being executed by at least one processor, perform operations comprising:determining at least one frequency position for a synchronization signal (SS) block; andobtaining the SS block based on the at least one frequency position,wherein the frequency position for the SS block for a frequency range bigger than 52.6 GHz is defined based on a start position, and a step size unit of 17.28MHz, andwherein the frequency position of the SS block is defined based on the start position, and 19 frequency positions based on multiplying the step size unit and step size vector <6 6 6 6 4 6 6 6 6 6 6 6 6 6 4 6 6 6 6>.

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