Method and apparatus for determining subcarrier offsets in unlicensed spectrum

Abstract

The present disclosure is about a communication method and system for integrating Internet of Things (IoT) technology with a fifth generation (5G) communication system to support a higher data rate than a fourth generation (4G) system. The present disclosure can be applied to smart services based on 5G communication technology and IoT related technologies, such as smart homes, smart buildings, smart cities, smart cars, connected cars, healthcare, digital education, smart retail, security and safety services. The present disclosure relates to wireless communication systems, and more specifically, to subcarrier offset determination in unlicensed spectrum.

Description

Technical Field

[0001] The present disclosure relates generally to wireless communication systems, and more particularly, to subcarrier offset determination in unlicensed spectrum. Background Art

[0002] In order to meet the increased demand for wireless data services since the deployment of 4G communication systems, efforts have been made to develop improved 5G or pre-5G communication systems. Therefore, 5G or pre-5G communication systems are also referred to as "super 4G networks" or "post-LTE systems". Consider implementing 5G communication systems in higher frequency (millimeter wave (mmWave)) bands (e.g., 60GHz bands) to achieve higher data rates. In order to reduce the propagation loss of radio waves and increase the transmission distance, beamforming, massive multiple input multiple output (MIMO), full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, and massive antenna technology are discussed in 5G communication systems. In addition, in 5G communication systems, development is being conducted on system network improvements based on the following: advanced small cells, cloud radio access networks (RAN), ultra-dense networks, device-to-device (D2D) communications, wireless backhaul, mobile networks, collaborative communications, coordinated multi-point (CoMP), receiving-end interference elimination, etc. In 5G systems, hybrid FSK and QAM modulation (FQAM) and sliding window superposition coding (SWSC) as advanced coding modulation (ACM); and filter bank multi-carrier (FBMC), non-orthogonal multiple access (NOMA) and sparse code multiple access (SCMA) as advanced access technologies have been developed.

[0003] The Internet, which is a human-centered connectivity network where humans generate and consume information, is evolving toward the Internet of Things (IoT), in which distributed entities such as things exchange and process information without human intervention. The Internet of Everything (IoE), which is a combination of IoT technology and big data processing technology through connection with a server, has emerged. Because technical elements such as "sensing technology", "wired / wireless communication and network infrastructure", "service interface technology", and "security technology" are required for IoT implementation, sensor networks, machine-to-machine (M2M) communication, machine type communication (MTC), etc. have been studied recently. Such an IoT environment can provide smart Internet technology services that create new value for human life by collecting and analyzing data generated between connected things. Through the fusion and combination of existing information technology (IT) and various industrial applications, IoT can be applied to various fields, including smart homes, smart buildings, smart cities, smart cars or connected cars, smart grids, healthcare, smart appliances, and advanced medical services.

[0004] In view of this, various attempts have been made to apply 5G communication systems to IoT networks. For example, technologies such as sensor networks, machine type communications (MTC), and machine-to-machine (M2M) communications can be implemented through beamforming, MIMO, and array antennas. The application of the cloud radio access network (RAN), which is the big data processing technology described above, can also be considered as an example of the fusion of 5G technology and IoT technology.

[0005] Wireless communication has become one of the most successful innovations in modern history. Recently, the number of subscribers to wireless communication services exceeded 5 billion and continues to grow rapidly. Due to the increasing popularity of smart phones and other mobile data devices (such as tablet devices, "notepad" computers, netbooks, e-book readers and machine-type devices) among consumers and enterprises, the demand for wireless data services is increasing rapidly. Summary of the invention

[0006] Technical issues

[0007] To meet the high growth of mobile data traffic and support new applications and deployments, improvements in radio interface efficiency and coverage are critical.The present disclosure relates to wireless communication systems, and more particularly, to subcarrier offset determination in unlicensed spectrum.

[0008] Solution to the problem

[0009] In one embodiment, a terminal in a wireless communication system operating with shared spectrum channel access is provided. The terminal includes: a transceiver; and a controller configured to: receive a synchronization signal and physical broadcast channel (SS / PBCH) block via the transceiver, identify first information based on a master information block (MIB) of a PBCH included in the SS / PBCH block, identify second information based on a payload of the PBCH, and determine a first value associated with a subcarrier offset for the SS / PBCH block based on a second value, wherein four least significant bits (LSBs) of the second value are indicated by the first information and a most significant bit (MSB) of the second value is indicated by the second information.

[0010] In another embodiment, a base station in a wireless communication system operating with shared spectrum channel access is provided. The base station includes: a transceiver; and a controller configured to: generate a master information block (MIB) of a physical broadcast channel (PBCH) included in a synchronization signal and physical broadcast channel (SS / PBCH) block, wherein first information is included in the MIB, generate a payload of the PBCH, wherein second information is included in the payload of the PBCH, and transmit, via the transceiver, an SS / PBCH block including the MIB of the PBCH and the payload of the PBCH, wherein a first value associated with a subcarrier offset of the SS / PBCH block is determined based on a second value, four least significant bits (LSBs) of the second value are indicated by the first information, and a most significant bit (MSB) of the second value is indicated by the second information.

[0011] In yet another embodiment, a method performed by a terminal in a wireless communication system operating with shared spectrum channel access is provided. The method includes: receiving a synchronization signal and physical broadcast channel (SS / PBCH) block; identifying first information based on a master information block (MIB) of a PBCH included in the SS / PBCH block; identifying second information based on a payload of the PBCH; and determining a first value associated with a subcarrier offset for the SS / PBCH block based on a second value, wherein four least significant bits (LSBs) of the second value are indicated by the first information and a most significant bit (MSB) of the second value is indicated by the second information.

[0012] In yet another embodiment, a method performed by a base station in a wireless communication system operating with shared spectrum channel access is provided. The method includes: generating a master information block (MIB) of a physical broadcast channel (PBCH) included in a synchronization signal and physical broadcast channel (SS / PBCH) block, wherein first information is included in the MIB; generating a payload of the PBCH, wherein second information is included in the payload of the PBCH; and transmitting an SS / PBCH block including the MIB and the payload of the PBCH, wherein a first value associated with a subcarrier offset of the SS / PBCH block is determined based on a second value, four least significant bits (LSBs) of the second value are indicated by the first information, and a most significant bit (MSB) of the second value is indicated by the second information.

[0013] According to the following drawings and description, other technical features may be obvious to those skilled in the art.

[0014] Advantageous Effects of the Invention

[0015] The present disclosure provides several components that may be used in conjunction or combination with each other, or may operate as independent solutions.

[0016] The present disclosure provides a methodology for determining a subcarrier offset from subcarrier 0 of a common resource grid to subcarrier 0 of an SS / PBCH block. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] For a more complete understanding of the present disclosure and its advantages, reference is now made to the following description in conjunction with the accompanying drawings, in which like reference numerals represent like parts:

[0018] Figure 1 An example wireless network according to an embodiment of the present disclosure is shown;

[0019] Figure 2 An example gNB according to an embodiment of the present disclosure is shown;

[0020] Figure 3 An example UE according to an embodiment of the present disclosure is shown;

[0021] Figure 4 shows an example DL slot structure according to an embodiment of the present disclosure;

[0022] Figure 5 An example UL slot structure for PUSCH transmission or PUCCH transmission according to an embodiment of the present disclosure is shown;

[0023] Figure 6 A flow chart of a method for determining a subcarrier offset according to an embodiment of the present disclosure is shown;

[0024] Fig. 7A The embodiment of the present disclosure is shown Determine k SSB A flowchart of the method;

[0025] Figure 7B The embodiment of the present disclosure is shown Determine k SSB Another flow chart of the method;

[0026] Figure 7C The embodiment of the present disclosure is shown Determine k SSB Another flow chart of the method;

[0027] Figure 8 shows example DBTW and QCL assumptions in a window according to an embodiment of the present disclosure;

[0028] Fig. 9 An example CSI-RS validation based on SS / PBCH blocks according to an embodiment of the present disclosure is shown;

[0029] Fig.10Another example CSI-RS validation based on SS / PBCH blocks according to an embodiment of the present disclosure is shown;

[0030] Fig.11 Another example CSI-RS validation based on SS / PBCH blocks according to an embodiment of the present disclosure is shown;

[0031] Fig.12 An example CSI-RS validation based on a CORESET for monitoring Type0-PDCCH according to an embodiment of the present disclosure is shown;

[0032] Fig.13 Another example CSI-RS validation based on CORESET for monitoring Type0-PDCCH according to an embodiment of the present disclosure is shown; and

[0033] Fig.14 A flow chart of a method for determining a subcarrier offset on a licensed spectrum according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0034] Before the following detailed description, it may be advantageous to clarify the definitions of certain words and phrases used throughout this patent document. The term "coupling" and its derivatives refer to any direct or indirect communication between two or more elements, regardless of whether these elements are in physical contact with each other. The terms "transmit", "receive" and "communication" and their derivatives include direct and indirect communication. The terms "include" and "comprise" and their derivatives mean including but not limited to. The term "or" is inclusive, meaning and / or. The phrase "associated with..." and its derivatives mean including, included therein, interconnected with..., included, included therein, connected to or with... connected, coupled to or with... coupled, communicable with... cooperate with..., interweave, juxtapose, approach, bind to or with... bind, have, have... property, have relationship or have relationship with... etc. The term "controller" means any device, system or part thereof that controls at least one operation. Such a controller can be implemented as a combination of hardware or hardware and software and / or firmware. The functionality associated with any particular controller can be centralized or distributed, whether local or remote. The phrase "at least one of" when used with a list of items means that different combinations of one or more of the listed items may be used, and only one of the items in the list may be needed. For example, "at least one of A, B, and C" includes any of the following combinations: A, B, C, A and B, A and C, B and C, A and B and C.

[0035] In addition, the various functions described below can be implemented or supported by one or more computer programs, each of which is formed by a computer-readable program code and embodied in a computer-readable medium. The terms "application" and "program" refer to one or more computer programs, software components, instruction sets, processes, functions, objects, classes, instances, related data or a part thereof, which are adapted to be implemented with a suitable computer-readable program code. The phrase "computer-readable program code" includes any type of computer code, including source code, object code and executable code. The phrase "computer-readable medium" includes any type of medium that can be accessed by a computer, such as a read-only memory (ROM), a random access memory (RAM), a hard drive, a compact disk (CD), a digital video disk (DVD) or any other type of memory. "Non-transitory" computer-readable media does not include wired, wireless, optical or other communication links that transmit temporary electrical signals or other signals. Non-transitory computer-readable media include media that can permanently store data and media that can store data and be rewritten later, such as rewritable optical disks or erasable memory devices.

[0036] Definitions for certain other words and phrases are provided throughout this patent document. Those of ordinary skill in the art should understand that in many, if not most, instances, such definitions apply to prior and future uses of such defined words and phrases.

[0037] Discussed below Figures 1 to 14 The various embodiments used to describe the principles of the present disclosure in this patent document are merely examples and should not be interpreted in any way to limit the scope of the present disclosure. Those skilled in the art will understand that the principles of the present disclosure can be implemented in any suitably arranged system or device.

[0038] The following documents are incorporated by reference into the present disclosure as if fully set forth herein: 3GPP TS 38.211 v15.4.0, "NR; Physical channels and modulation"; 3GPP TS 38.212 v15.4.0, "NR; Multiplexing and Channel coding"; 3GPP TS 38.213 v15.4.0, "NR; Physical Layer Procedures for Control"; 3GPP TS 38.214 v15.4.0, "NR; Physical Layer Procedures for Data"; and 3GPP TS 38.331 v15.4.0, "NR; Radio Resource Control (RRC) Protocol Specification".

[0039] The following Figures 1 to 3 Various embodiments are described that are implemented in a wireless communication system and where an Orthogonal Frequency Division Multiplexing (OFDM) or Orthogonal Frequency Division Multiple Access (OFDMA) communication technique is used. Figures 1 to 3 The description is not meant to imply physical or architectural limitations to the manner in which different embodiments may be implemented. Different embodiments of the disclosure may be implemented in any suitably arranged communications system.

[0040] Figure 1 An example wireless network according to an embodiment of the present disclosure is shown. Figure 1 The embodiment of the wireless network shown is for example only. Other embodiments of the wireless network 100 may be used without departing from the scope of the present disclosure.

[0041] like Figure 1 As shown, the wireless network includes gNB 101 (e.g., base station, BS), gNB 102, and gNB 103. gNB 101 communicates with gNB 102 and gNB 103. gNB 101 also communicates with at least one network 130, such as the Internet, a proprietary Internet Protocol (IP) network, or other data network.

[0042] gNB 102 provides wireless broadband access to network 130 for a first plurality of UEs within coverage area 120 of gNB 102. The first plurality of UEs include: UE 111, which may be located in a small enterprise; UE 112, which may be located in an enterprise (E); UE 113, which may be located in a WiFi hotspot (HS); UE 114, which may be located in a first residence (R); UE 115, which may be located in a second residence (R); and UE 116, which may be a mobile device (M) such as a cellular phone, a wireless laptop, a wireless PDA, etc. gNB 103 provides wireless broadband access to network 130 for a second plurality of UEs within coverage area 125 of gNB 103. The second plurality of UEs includes UE 115 and UE 116. In some embodiments, one or more of gNBs 101-103 may communicate with each other and with UEs 111-116 using 5G / NR, LTE, LTE-A, WiMAX, WiFi, or other wireless communication technologies.

[0043] Depending on the network type, the term "base station" or "BS" may refer to any component (or set of components) configured to provide wireless access to a network, such as a transmission point (TP), a transmission reception point (TRP), an enhanced base station (eNodeB or eNB), a 5G / NR base station (gNB), a macro cell, a femto cell, a WiFi access point (AP), or other wirelessly enabled devices. The base station may provide wireless access in accordance with one or more wireless communication protocols, such as 5G / NR 3GPP new radio interface / access (NR), long term evolution (LTE), advanced LTE (LTE-A), high speed packet access (HSPA), Wi-Fi 802.11a / b / g / n / ac, etc. For convenience, the terms "BS" and "TRP" are used interchangeably in this patent document to refer to network infrastructure components that provide wireless access to remote terminals. In addition, depending on the network type, the term "user equipment" or "UE" may refer to any component, such as a "mobile station", "subscriber station", "remote terminal", "wireless terminal", "reception point", or "user equipment". For convenience, the terms "user equipment" and "UE" are used in this patent document to refer to a remote wireless device that wirelessly accesses a base station, whether the UE is a mobile device (such as a mobile phone or smartphone) or a device that is generally considered to be a fixed device (such as a desktop computer or vending machine).

[0044] The dashed lines illustrate the approximate extents of coverage areas 120 and 125, which are shown as approximately circular for purposes of example and explanation only. It should be clearly understood that coverage areas associated with gNBs, such as coverage areas 120 and 125, may have other shapes, including irregular shapes, depending on the configuration of the gNB and variations in the radio environment associated with natural and man-made obstacles.

[0045] As described in more detail below, one or more of UEs 111-116 include circuitry, programming, or a combination thereof for the UE. In certain embodiments, one or more of gNBs 101-103 include circuitry, programming, or a combination thereof for the UE.

[0046] although Figure 1 An example of a wireless network is shown, but Figure 1 Various changes may be made. For example, the wireless network may include any number of gNBs and any number of UEs in any suitable arrangement. In addition, gNB 101 may communicate directly with any number of UEs and provide those UEs with wireless broadband access to network 130. Similarly, each gNB 102-103 may communicate directly with network 130 and provide the UEs with direct wireless broadband access to network 130. In addition, gNBs 101, 102, and / or 103 may provide access to other or additional external networks, such as an external telephone network or other type of data network.

[0047] Figure 2 An example gNB 102 is shown according to an embodiment of the present disclosure. Figure 2 The embodiment of the gNB 102 shown in FIG. 1 is for example only, and Figure 1 gNBs 101 and 103 may have the same or similar configurations. However, gNBs have various configurations, and Figure 2 The scope of the present disclosure is not limited to any particular implementation of the gNB.

[0048] like Figure 2 As shown, gNB 102 includes multiple antennas 205a-205n, multiple RF transceivers 210a-210n, transmit (TX) processing circuitry 215, and receive (RX) processing circuitry 220. gNB 102 also includes a controller / processor 225, a memory 230, and a backhaul or network interface 235.

[0049] The RF transceivers 210a-210n receive incoming RF signals from the antennas 205a-205n, such as signals transmitted by UEs in the network 100. The RF transceivers 210a-210n down-convert the incoming RF signals to generate IF or baseband signals. The IF or baseband signals are sent to the RX processing circuit 220, which generates processed baseband signals by filtering, decoding and / or digitizing the baseband or IF signals. The RX processing circuit 220 transmits the processed baseband signals to the controller / processor 225 for further processing.

[0050] The TX processing circuit 215 receives analog or digital data (such as voice data, web data, email, or interactive video game data) from the controller / processor 225. The TX processing circuit 215 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate a processed baseband or IF signal. The RF transceivers 210a-210n receive the outgoing processed baseband or IF signals from the TX processing circuit 215 and up-convert the baseband or IF signals to RF signals that are transmitted via the antennas 205a-205n.

[0051] The controller / processor 225 may include one or more processors or other processing devices that control the overall operation of the gNB 102. For example, the controller / processor 225 may control the reception of forward channel signals and the transmission of reverse channel signals by the RF transceivers 210a-210n, the RX processing circuitry 220, and the TX processing circuitry 215 in accordance with well-known principles. The controller / processor 225 may also support additional functionality, such as more advanced wireless communication functionality. For example, the controller / processor 225 may support beamforming or directional routing operations, in which outgoing / incoming signals from / to the multiple antennas 205a-205n are weighted differently to effectively direct the outgoing signals in a desired direction. Any of a variety of other functionality may be supported in the gNB 102 via the controller / processor 225.

[0052] Controller / processor 225 is also capable of executing programs and other processes, such as an OS, that reside in memory 230. Controller / processor 225 may move data into or out of memory 230 as needed to execute a process.

[0053] The controller / processor 225 is also coupled to a backhaul or network interface 235. The backhaul or network interface 235 allows the gNB 102 to communicate with other devices or systems via a backhaul connection or via a network. The interface 235 may support communication over any suitable wired or wireless connection. For example, when the gNB 102 is implemented as part of a cellular communication system (such as a system supporting 5G / NR, LTE, or LTE-A), the interface 235 may allow the gNB 102 to communicate with other gNBs via a wired or wireless backhaul connection. When the gNB 102 is implemented as an access point, the interface 235 may allow the gNB 102 to communicate over a wired or wireless local area network or over a wired or wireless connection to a larger network (such as the Internet). The interface 235 includes any suitable structure that supports communication over a wired or wireless connection, such as an Ethernet or RF transceiver.

[0054] Memory 230 is coupled to controller / processor 225. A portion of memory 230 may include RAM, while another portion of memory 230 may include flash memory or other ROM.

[0055] although Figure 2 An example of a gNB 102 is shown, but the Figure 2 For example, gNB 102 may include any number of Figure 2 As a specific example, the access point may include multiple interfaces 235, and the controller / processor 225 may support routing functions to route data between different network addresses. As another specific example, although shown as including a single instance of TX processing circuitry 215 and a single instance of RX processing circuitry 220, gNB 102 may include multiple instances of each (such as one per RF transceiver). Additionally, as specifically desired, Figure 2 The various components in may be combined, further subdivided, or omitted, and additional components may be added.

[0056] Figure 3 An example UE 116 is shown in accordance with an embodiment of the present disclosure. Figure 3 The embodiment of UE 116 shown in FIG. 1 is for example only, and Figure 1 UEs 111-115 may have the same or similar configurations. However, UEs may have a variety of configurations, and Figure 3 The scope of the present disclosure is not limited to any particular implementation of the UE.

[0057] like Figure 3As shown, UE 116 includes antenna 305, radio frequency (RF) transceiver 310, TX processing circuit 315, microphone 320 and RX processing circuit 325. UE 116 also includes speaker 330, processor 340, input / output (I / O) interface (IF) 345, touch screen 350, display 355 and memory 360. Memory 360 includes operating system (OS) 361 and one or more applications 362.

[0058] RF transceiver 310 receives incoming RF signals transmitted by a gNB of network 100 from antenna 305. RF transceiver 310 downconverts the incoming RF signals to generate an intermediate frequency (IF) or baseband signal. The IF or baseband signal is sent to RX processing circuitry 325, which generates a processed baseband signal by filtering, decoding, and / or digitizing the baseband or IF signal. RX processing circuitry 325 transmits the processed baseband signal to speaker 330 (such as for voice data) or to processor 340 for further processing (such as for web browsing data).

[0059] The TX processing circuit 315 receives analog or digital voice data from the microphone 320 or other outgoing baseband data (such as web data, email, or interactive video game data) from the processor 340. The TX processing circuit 315 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate a processed baseband or IF signal. The RF transceiver 310 receives the outgoing processed baseband or IF signal from the TX processing circuit 315 and up-converts the baseband or IF signal to an RF signal that is transmitted via the antenna 305.

[0060] The processor 340 may include one or more processors or other processing devices and executes the OS 361 stored in the memory 360 to control the overall operation of the UE 116. For example, the processor 340 may control the reception of forward channel signals and the transmission of reverse channel signals by the RF transceiver 310, the RX processing circuit 325, and the TX processing circuit 315 in accordance with well-known principles. In some embodiments, the processor 340 includes at least one microprocessor or microcontroller.

[0061] The processor 340 is also capable of executing other processes and programs resident in the memory 360, such as processes for beam management. The processor 340 can move data into or out of the memory 360 as needed to perform the processing. In some embodiments, the processor 340 is configured to execute the application 362 based on the OS 361 or in response to a signal received from the gNB or operator. The processor 340 is also coupled to the I / O interface 345, which provides the UE 116 with the ability to connect to other devices such as laptops and handheld computers. The I / O interface 345 is the communication path between these accessories and the processor 340.

[0062] Processor 340 is also coupled to touch screen 350 and display 355. An operator of UE 116 may enter data into UE 116 using touch screen 350. Display 355 may be a liquid crystal display, light emitting diode display, or other display capable of rendering text (such as from a website) and / or at least limited graphics.

[0063] Memory 360 is coupled to processor 340. A portion of memory 360 may include random access memory (RAM), while another portion of memory 360 may include flash memory or other read-only memory (ROM).

[0064] although Figure 3 An example of UE 116 is shown, but the Figure 3 For example, according to specific needs, Figure 3 The various components in the embodiment may be combined, further subdivided, or omitted, and additional components may be added. As a specific example, processor 340 may be divided into multiple processors, such as one or more central processing units (CPUs) and one or more graphics processing units (GPUs). In addition, although Figure 3 The UE 116 is shown configured as a mobile phone or smart phone, but the UE may be configured to operate as other types of mobile or stationary devices.

[0065] To meet the increased demand for wireless data services since the deployment of 4G communication systems and enable various vertical applications, efforts have been made to develop and deploy improved 5G / NR or pre-5G / NR communication systems. Therefore, 5G / NR or pre-5G / NR communication systems are also referred to as "super 4G networks" or "post-LTE systems". Consider implementing 5G / NR communication systems in higher frequency (mmWave) bands (e.g., 28GHz or 60GHz bands) to achieve higher data rates; or consider implementing 5G / NR communication systems in lower frequency bands (such as 6GHz) to enable robust coverage and mobility support. Aspects of the present disclosure may also be applied to the deployment of 5G communication systems, 6G, or even later versions that may use terahertz (THz) bands. In order to reduce the propagation loss of radio waves and increase the transmission distance, beamforming, massive multiple-input multiple-output (MIMO), full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, and massive antenna technology are discussed in 5G / NR communication systems.

[0066] In addition, in the 5G / NR communication system, development is being carried out for system network improvements based on the following: advanced small cells, cloud radio access network (RAN), ultra-dense networks, device-to-device (D2D) communication, wireless backhaul, mobile networks, collaborative communications, coordinated multi-point (CoMP), receiving-end interference cancellation, etc.

[0067] The communication system includes a downlink (DL), which refers to transmission from a base station or one or more transmission points to a UE, and an uplink (UL), which refers to transmission from a UE to a base station or one or more reception points.

[0068] The time unit for DL ​​signaling or UL signaling on a cell is called a time slot and may include one or more symbols. A symbol may also be used as an additional time unit. A frequency (or bandwidth (BW)) unit is called a resource block (RB). An RB includes multiple subcarriers (SC). For example, a time slot may have a duration of 0.5 milliseconds or 1 millisecond, including 14 symbols, and an RB may include 12 SCs, where the spacing between SCs is 15KHz or 30KHz, etc.

[0069] DL signals include data signals conveying information content, control signals conveying DL control information (DCI), and reference signals (RS) also known as pilot signals. The gNB transmits data information or DCI through the corresponding physical DL shared channel (PDSCH) or physical DL control channel (PDCCH). PDSCH or PDCCH can be transmitted on a variable number of time slot symbols including one time slot symbol. For simplicity, the DCI format that schedules PDSCH reception of the UE is called DL DCI format, while the DCI format that schedules physical uplink shared channel (PUSCH) transmission from the UE is called UL DCI format.

[0070] The gNB transmits one or more of multiple types of RS, including Channel State Information RS (CSI-RS) and Demodulation RS (DMRS). CSI-RS is primarily intended for UEs to perform measurements and provide Channel State Information (CSI) to the gNB. For channel measurements, non-zero power CSI-RS (NZP CSI-RS) resources are used. For interference measurement reporting (IMR), CSI interference measurement (CSI-IM) resources associated with zero power CSI-RS (ZP CSI-RS) configurations are used. A CSI process consists of NZP CSI-RS and CSI-IM resources.

[0071] The UE can determine the CSI-RS transmission parameters through DL control signaling or high-level signaling (such as RRC signaling) from the gNB. The transmission instance of CSI-RS can be indicated by DL control signaling or configured by high-level signaling. DMRS is transmitted only in the BW of the corresponding PDCCH or PDSCH, and the UE can use DMRS to demodulate data or control information.

[0072] Figure 4 and Figure 5 Example wireless transmit and receive paths according to the present disclosure are shown. In the following description, the transmit path 400 may be described as being implemented in a gNB (e.g., gNB 102) and the receive path 500 may be described as being implemented in a UE (e.g., UE 116). However, it is understood that the receive path 500 may be implemented in a gNB and the transmit path 400 may be implemented in a UE. In some embodiments, the receive path 500 is configured to support the following codebook design and structure: The codebook design and structure is used for a system with a 2D antenna array as described in an embodiment of the present disclosure.

[0073] like Figure 4The transmission path 400 shown includes a channel coding and modulation block 405, a serial to parallel (S-to-P) block 410, an inverse fast Fourier transform (IFFT) block of size N 415, a parallel to serial (P-to-S) block 420, an add cyclic prefix block 425, and an up-converter (UC) 430. Figure 5 The receive path 500 shown includes a downconverter (DC) 555, a cyclic prefix removal block 560, a serial to parallel (S-to-P) block 565, a size-N fast Fourier transform (FFT) block 570, a parallel to serial (P-to-S) block 575, and a channel decoding and demodulation block 580.

[0074] As shown in diagram 400, the channel coding and modulation block 405 receives a set of information bits, applies coding (such as low-density parity-check (LDPC) coding), and modulates (such as using quadrature phase-shift keying (QPSK) or quadrature amplitude modulation (QAM)) the input bits to generate a frequency-domain modulation symbol sequence.

[0075] The serial to parallel block 410 converts (such as demultiplexes) the serial modulated symbols into parallel data to generate N parallel symbol streams, where N is the IFFT / FFT size used in the gNB 102 and the UE 116. The size N IFFT block 415 performs an IFFT operation on the N parallel symbol streams to generate a time domain output signal. The parallel to serial block 420 converts (such as multiplexes) the parallel time domain output symbols from the size N IFFT block 415 to generate a serial time domain signal. The add cyclic prefix block 425 inserts a cyclic prefix to the time domain signal. The up-converter 430 modulates (such as up-converts) the output of the add cyclic prefix block 425 to an RF frequency for transmission via a wireless channel. The signal may also be filtered at baseband before conversion to RF frequency.

[0076] The transmitted RF signal from gNB 102 reaches UE 116 after passing through the wireless channel, and operations opposite to those at gNB 102 are performed at UE 116.

[0077] like Figure 5 As shown, the down converter 555 down-converts the received signal to the baseband frequency, and the cyclic prefix removal block 560 removes the cyclic prefix to generate a serial time domain baseband signal. The serial to parallel block 565 converts the time domain baseband signal into a parallel time domain signal. The size N FFT block 570 performs an FFT algorithm to generate N parallel frequency domain signals. The parallel to serial block 575 converts the parallel frequency domain signals into a modulated data symbol sequence. The channel decoding and demodulation block 580 demodulates and decodes the modulated symbols to recover the original input data stream.

[0078] Each of gNBs 101-103 may implement Figure 4 The transmission path 400 shown is similar to the transmission to UEs 111-116 in the downlink; and may be implemented as Figure 5 Receive path 500 is shown, which is similar to reception from UE 111-116 in the uplink. Similarly, each of UE 111-116 can implement transmit path 400 for transmission to gNB 101-103 in the uplink, and can implement receive path 500 for reception from gNB 101-103 in the downlink.

[0079] Figure 4 and Figure 5 Each component in may be implemented using hardware only or a combination of hardware and software / firmware. As a specific example, Figure 4 and Figure 5 At least some of the components in can be implemented as software, while other components can be implemented by configurable hardware or a mixture of software and configurable hardware. For example, FFT block 570 and IFFT block 515 can be implemented as configurable software algorithms, where the value of size N can be modified according to the implementation.

[0080] In addition, although described as using FFT and IFFT, this is only by way of example and may not be construed as limiting the scope of the present disclosure. Other types of transforms may be used, such as discrete Fourier transform (DFT) and inverse discrete Fourier transform (IDFT) functions. It may be appreciated that for DFT and IDFT functions, the value of variable N may be any integer (such as 1, 2, 3, 4, etc.), while for FFT and IFFT functions, the value of variable N may be any integer (such as 1, 2, 4, 8, 16, etc.) that is a power of 2.

[0081] although Figure 4 and Figure 5 Examples of wireless transmission and reception paths are shown, but Figure 4 and Figure 5 For example, according to specific needs, Figure 4 and Figure 5 The various components in may be combined, further subdivided, or omitted, and additional components may be added. Figure 4 and Figure 5 It is intended to illustrate examples of the types of transmit and receive paths that may be used in a wireless network. Any other suitable architecture may be used to support wireless communications in a wireless network.

[0082] The present disclosure provides several components that may be used in conjunction or combination with each other, or may operate as independent solutions.

[0083] The present disclosure provides a methodology for determining a subcarrier offset from subcarrier 0 of a common resource grid to subcarrier 0 of a SS / PBCH block.

[0084] In the present disclosure, the quantity k SSB Public resource block The subcarrier offset from subcarrier 0 in the SS / PBCH block to subcarrier 0 of the SS / PBCH block, where Obtained from the higher-level parameter offsetToPointA.

[0085] In the present disclosure, the applicable carrier frequency range is at least frequency range 1, wherein the type of SS / PBCH block is SS / PBCH block type A.

[0086] For operations not using shared channel access, k SSB The 4 least significant bits of k are given by the higher-level parameter ssb-SubcarrierOffset, and k SSB The most significant bit of the PBCH payload is Given.

[0087] Figure 6 A flowchart of a method 600 for determining a subcarrier offset according to an embodiment of the present disclosure is shown, such as may be performed by a UE (eg Figure 1 111-116) shown in FIG. Figure 6 The embodiment of method 600 shown in FIG. 6 is for illustration only. Figure 6 One or more of the components shown in the may be implemented in dedicated circuits configured to perform the mentioned functions, or one or more of the components may be implemented by one or more processors executing instructions to perform the mentioned functions.

[0088] like Figure 6 As shown in FIG. 6 , method 600 starts at step 601. In step 601, the UE determines a higher layer parameter ssb-SubcarrierOffset. In step 602, the UE determines from the PBCH payload In step 603, the UE determines whether the operation on shared spectrum channel access is supported. In step 603, the operation is not supported, and the UE determines k based on LTE Rel-15 legacy behavior in step 606. SSB In step 603, if the operation is supported, the UE determines in step 604 according to the embodiment provided in the present disclosure: In step 605, the UE performs the following operations according to the embodiment provided in the present disclosure and based on To determine k SSB .

[0089] In one embodiment, for operation using shared channel access, k SSB The first least significant bit of k is 0, SSB The 2nd to 4th least significant bits of k are given by the 3 most significant bits of the higher layer parameter ssb-SubcarrierOffset, and SSB The most significant bit of the PBCH payload is Given.

[0090] In one example, in, The 4 least significant bits of are given by the higher layer parameter ssb-SubcarrierOffset, and The most significant bit of the PBCH payload is Given.

[0091] In another embodiment, for operation using shared channel access, k SSB The first and second least significant bits of k are 0, SSB The third and fourth least significant bits of k are given by the two most significant bits of the higher layer parameter ssb-SubcarrierOffset, and k SSB The most significant bit of the PBCH payload is Given.

[0092] In one example, in, The 4 least significant bits of are given by the higher layer parameter ssb-SubcarrierOffset, and The most significant bit of the PBCH payload is Given.

[0093] In yet another embodiment, for operation using shared channel access, k SSB The first least significant bit of k is 0, SSB The 2nd to 4th least significant bits of are given by the 3 most significant bits of the higher layer parameter ssb-SubcarrierOffset.

[0094] In one example, in, Given by the higher-layer parameter ssb-SubcarrierOffset.

[0095] In yet another embodiment, for operation using shared channel access, k SSB The first and second least significant bits of k are 0, SSBThe 3rd and 4th least significant bits of are given by the 2 most significant bits of the higher layer parameter ssb-SubcarrierOffset.

[0096] In one example, in, Given by the higher-layer parameter ssb-SubcarrierOffset.

[0097] In yet another embodiment, for operation using shared channel access, if but And if but in, The 4 least significant bits of are given by the higher layer parameter ssb-SubcarrierOffset, and The most significant bit of the PBCH payload is Given.

[0098] In such an embodiment, if Then k SSB The 4 least significant bits of are given by the higher layer parameter ssb-SubcarrierOffset, and The most significant bit of the PBCH payload is Given; if Then k SSB The 4th, 3rd and 2nd least significant bits (e.g., the 2nd, 3rd and 4th most significant bits) of k are respectively given by the 1st, 2nd and 3rd most significant bits of the higher layer parameter ssb-SubcarrierOffset, SSB The first least significant bit of is given by 0, and The most significant bit of the PBCH payload is Given. Fig. 7A The diagram shows the Determine k SSB Example procedure.

[0099] Fig. 7A The embodiment of the present disclosure is shown Determine k SSB Flow chart of method 700, such as can be performed by a UE (such as Figure 1 111-116) shown in FIG. Fig. 7A The embodiment of method 700 shown in FIG. 7 is for illustration only. Fig. 7A One or more of the components shown in the may be implemented in dedicated circuits configured to perform the mentioned functions, or one or more of the components may be implemented by one or more processors executing instructions to perform the mentioned functions.

[0100] like Fig. 7A As shown in FIG. 7 , method 700 starts at step 701. In step 701, the UE determines whether there is In step 701, if Then the UE determines in step 702 In step 701, if The UE determines

[0101] In yet another embodiment, for operation using shared channel access, if but And if but in, The 4 least significant bits of are given by the higher layer parameter ssb-SubcarrierOffset, and The most significant bit of the PBCH payload is Given, and if (f SSB -GSCN) / 15kHz mod 2=0, then k′ SSB =0; and if (f SSB -GSCN) / 15kHz mod 2=1, then k′ SSB =1, where f SSB is the center frequency of the SS / PBCH block, and the Global Synchronization Channel Number (GSCN) is the synchronization raster point (ie, the center of the subcarrier 120 of the SS / BCH block).

[0102] In such an embodiment, if Then k SSB The 4 least significant bits of are given by the higher layer parameter ssb-SubcarrierOffset, and The most significant bit of the PBCH payload is Given; if And (f SSB -GSCN) / 15kHz mod 2=0, then k SSB The 4th, 3rd and 2nd least significant bits (e.g., the 2nd, 3rd and 4th most significant bits) of k are respectively given by the 1st, 2nd and 3rd most significant bits of the higher layer parameter ssb-SubcarrierOffset, SSB The first least significant bit of is given by 0, and The most significant bit of the PBCH payload is Given; if And (f SSB -GSCN) / 15kHz mod 2=1, then k SSBThe 4th, 3rd and 2nd least significant bits (e.g., the 2nd, 3rd and 4th most significant bits) of k are respectively given by the 1st, 2nd and 3rd most significant bits of the higher layer parameter ssb-SubcarrierOffset, SSB The first least significant bit of is given by 1, and The most significant bit of the PBCH payload is Given; where f SSB is the center frequency of the SS / PBCH block, and GSCN is the synchronization raster point (ie, the center of the subcarrier 120 of the SS / BCH block). Figure 7B The diagram shows the Determine k SSB Example procedure.

[0103] Figure 7B The embodiment of the present disclosure is shown Determine k SSB Another flow chart of method 750, such as can be performed by a UE (such as Figure 1 111-116) shown in FIG. Figure 7B The embodiment of method 750 shown in FIG. 7 is for illustration only. Figure 7B One or more of the components shown in the may be implemented in dedicated circuits configured to perform the mentioned functions, or one or more of the components may be implemented by one or more processors executing instructions to perform the mentioned functions.

[0104] like Figure 7B As shown in FIG. 7 , method 750 starts at step 711. In step 711, the UE determines whether there is In step 711, if The UE determines in step 712 In step 711, if Then the UE determines in step 713 whether there is (f SSB -CSCN) / 15kHz mod 2=0. In step 713, if (f SSB -CSCN) / 15kHz mod 2=0, then the UE determines in step 715

[0105] In yet another embodiment, for operation using shared channel access, if but And if but in, The 4 least significant bits of are given by the higher layer parameter ssb-SubcarrierOffset, and The most significant bit of the PBCH payload is Given, and if f SSB / 15kHz mod 2=0, then k′ SSB =0; and if f SSB / 15kHz mod 2=1, then k′ SSB =1, where f SSB is the center frequency of the SS / PBCH block (ie, the center of the subcarrier 120 of the SS / PBCH block).

[0106] In such an embodiment, if Then k SSB The 4 least significant bits of are given by the higher layer parameter ssb-SubcarrierOffset, and The most significant bit of the PBCH payload is Given; if And f SSB / 15kHmod 2=0, then k SSB The 4th, 3rd and 2nd least significant bits (e.g., the 2nd, 3rd and 4th most significant bits) of k are respectively given by the 1st, 2nd and 3rd most significant bits of the higher layer parameter ssb-SubcarrierOffset, SSB The first least significant bit of is given by 0, and The most significant bit of the PBCH payload is Given; if And f SSB / 15kHz mod 2=1, then k SSB The 4th, 3rd and 2nd least significant bits (e.g., the 2nd, 3rd and 4th most significant bits) of k are respectively given by the 1st, 2nd and 3rd most significant bits of the higher layer parameter ssb-SubcarrierOffset, SSB The first least significant bit of is given by 1, and The most significant bit of the PBCH payload is Given; where f SSB is the center frequency of the SS / PBCH block, and GSCN is the synchronization raster point (ie, the center of the subcarrier 120 of the SS / BCH block). Figure 7C The diagram shows the Determine k SSB Example procedure.

[0107] Figure 7C The embodiment of the present disclosure is shown Determine k SSB Another flow chart of method 770, such as can be performed by a UE (such as Figure 1 111-116) shown in FIG. Figure 7C The embodiment of method 770 shown in FIG. 7 is for illustration only. Figure 7C One or more of the components shown in the may be implemented in dedicated circuits configured to perform the mentioned functions, or one or more of the components may be implemented by one or more processors executing instructions to perform the mentioned functions.

[0108] like Figure 7C As shown in FIG. 7 , method 770 starts at step 721. In step 721, the UE determines whether there is In step 721, if The UE determines in step 722 In step 721, if Then the UE determines in step 723 whether there is f SSB / 15kHz mod 2 = 0. In step 723, if f SSB / 15kHz mod 2=0, then the UE determines in step 725

[0109] In yet another embodiment, for operation using shared channel access, if but And if but in, The 4 least significant bits of are given by the higher layer parameter ssb-SubcarrierOffset, and The most significant bit of the PBCH payload is Given, and if f SSB / 15kHz mod 2=0, then k′ SSB =0; and if f SSB / 15kHz mod 2=1, then k′ SSB =1, where f SSB It is the center of subcarrier 0 of the SS / PBCH block.

[0110] In such an embodiment, if Then k SSB The 4 least significant bits of are given by the higher layer parameter ssb-SubcarrierOffset, and The most significant bit of the PBCH payload is Given; if And f SSB / 15kHz mod 2=0, then k SSBThe 4th, 3rd and 2nd least significant bits (e.g., the 2nd, 3rd and 4th most significant bits) of k are respectively given by the 1st, 2nd and 3rd most significant bits of the higher layer parameter ssb-SubcarrierOffset, SSB The first least significant bit of is given by 0, and The most significant bit of the PBCH payload is Given; if And f SSB / 15kHz mod 2=1, then k SSB The 4th, 3rd and 2nd least significant bits (e.g., the 2nd, 3rd and 4th most significant bits) of k are respectively given by the 1st, 2nd and 3rd most significant bits of the higher layer parameter ssb-SubcarrierOffset, SSB The first least significant bit of is given by 1, and The most significant bit of the PBCH payload is Given; where f SSB It is the center of subcarrier 0 of the SS / PBCH block. Figure 7C The diagram shows the Determine k SSB Example procedure.

[0111] In yet another embodiment, for operation using shared channel access, if but And if but in, The 4 least significant bits of are given by the higher layer parameter ssb-SubcarrierOffset, and The most significant bit of the PBCH payload is Given, and if f SSB / 15kHz mod 2=0, then k′ SSB =0; and if f SSB / 15kHz mod 2=1, then k′ SSB =1, where f SSB It is the center of subcarrier 239 of the SS / PBCH block.

[0112] In such an embodiment, if Then k SSB The 4 least significant bits of are given by the higher layer parameter ssb-SubcarrierOffset, and The most significant bit of the PBCH payload is Given; if And k SSB / 15kHz mod 2=0, then kSSB The 4th, 3rd and 2nd least significant bits (e.g., the 2nd, 3rd and 4th most significant bits) of k are respectively given by the 1st, 2nd and 3rd most significant bits of the higher layer parameter ssb-SubcarrierOffset, SSB The first least significant bit of is given by 0, and The most significant bit of the PBCH payload is Given; if And f SSB / 15kHz mod 2=1, then k SSB The 4th, 3rd and 2nd least significant bits (e.g., the 2nd, 3rd and 4th most significant bits) of k are respectively given by the 1st, 2nd and 3rd most significant bits of the higher layer parameter ssb-SubcarrierOffset, SSB The first least significant bit of is given by 1, and The most significant bit of the PBCH payload is Given; where f SSB It is the center of subcarrier 239 of the SS / PBCH block. Figure 7C The diagram shows the Determine k SSB Example procedure.

[0113] In yet another embodiment, for operation using shared channel access, k SSB The first least significant bit of k is 0, SSB The 2nd to 4th least significant bits of k are given by the 3 most significant bits of the higher layer parameter ssb-SubcarrierOffset, and SSB The most significant bit of the PBCH payload Given.

[0114] In one example, if but in, The 4 least significant bits of are given by the higher layer parameter ssb-SubcarrierOffset, and The most significant bit of the PBCH payload is For this embodiment, the SS / PBCH block type has μ∈{0,1} and k represented in terms of a subcarrier spacing (SCS) of 15 kHz. SSB ∈{0, 2, ..., 22}.

[0115] In yet another embodiment, for operation using shared channel access, if but And if but in, The 4 least significant bits of are given by the higher layer parameter ssb-SubcarrierOffset, and The most significant bit of the PBCH payload is Given.

[0116] In yet another embodiment, for operation using shared channel access, k SSB The first to third least significant bits of k are given by the three most significant bits of the higher layer parameter ssb-SubcarrierOffset, and SSB The most significant bit of the PBCH payload is Given.

[0117] In one example, in, The 4 least significant bits of are given by the higher layer parameter ssb-SubcarrierOffset, and The most significant bit of the PBCH payload is For this embodiment, a new SS / PBCH block type needs to be defined (e.g., indicated as SS / PBCH block type C), where μ∈{0,1}, and k represents the same SCS as the SS / PBCH block. SSB ∈{0, 1, ..., 11} or K SSB ∈{0, 1, ..., 15}.

[0118] In yet another embodiment, for operation using shared channel access, if but And if but in, The 4 least significant bits of are given by the higher layer parameter ssb-SubcarrierOffset. For this embodiment, the SS / PBCH block type has μ∈{0,1} and k represented with respect to the same SCS as the SS / PBCH block. SSB ∈{0, 1, ..., 15}.

[0119] In yet another embodiment, for operation using shared channel access, if but And if but in, The 4 least significant bits of are given by the higher layer parameter ssb-SubcarrierOffset. For this embodiment, the SS / PBCH block type has μ∈{0,1} and k represented with respect to the same SCS as the SS / PBCH block. SSB∈{0, 1, ..., 15}.

[0120] like Figure 6 As shown in Fig. 7A , Figure 7B and Figure 7C It shows that from Determine k SSB (e.g., 605 of the example UE process for determining subcarrier offsets, such as Figure 6 ).

[0121] In one embodiment, according to the present disclosure, SSB In at least one embodiment of the present invention, at least one bit may be saved from ssb-SubcarrierOffset for other purposes.

[0122] In one example, the LSB of ssb-SubcarrierOffset can be combined with subCarrierSpacingCommon to indicate parameters for deriving the quasi co-location (QCL) assumption of the SS / PBCH block according to Table 1, for example, indicated as

[0123] In one case, this method is only applicable to k SSB <24.

[0124] [Table 1]

[0125] The combination of subCarrierSpacingCommon and the LSB of ssb-SubcarrierOffset to Mapping

[0126]

[0127] In one embodiment, for a SS / PBCH block having k represented with respect to the same SCS as the SS / PBCH block SSB ∈{0, 1, ..., 15}, for the operation using shared spectrum channel access, for k SSB The interpretation of ∈{12, 13, 14, 15} follows for k in frequency range 2 (FR2) SSB explain.

[0128] In one example, if the UE detects the first SS / PBCH block and determines that the control resource set (CORESET) for the Type0-PDCCH common search space (CSS) set does not exist, and 12≤k for operation with shared spectrum channel access SSB≤13, the UE may determine that the closest (in the corresponding frequency direction) GSCN of the second SS / PBCH block of the CORESET for the associated Type0-PDCCH CSS set is If the UE detects the second SS / PBCH block and the second SS / PBCH block does not provide the CORESET for the Type0-PDCCH CSS set, the UE may ignore the GSCN related information of the SS / PBCH block location for performing a cell search.

[0129] If the UE detects an SS / PBCH block and determines that the CORESET for the Type0-PDCCH CSS set does not exist, and k for operation with shared spectrum channel access SSB =15, then the UE is determined to be within the GSCN range There is no SS / PBCH block with an associated Type0-PDCCH CSS set. and Determined by controlResourceSetZero and searchSpaceZero in pdcch-ConfigSIB1 respectively.

[0130] The present disclosure provides a mechanism and methodology for CSI-RS verification for operations using shared spectrum channel access. The present disclosure includes the following components: CSI-RS verification based on SS / PBCH blocks; CSI-RS verification of PDCCH based on remaining minimum system information (RMSI); CSI-RS verification of PDSCH based on RMSI; conventional CSI-RS verification based on PDCCH / PDSCH; and CSI-RS verification based on another CSI-RS triggered by DCI.

[0131] For operation with shared spectrum channel access, a discovery burst transmission window (DBTW) is supported to allow more opportunities for discovery burst transmission due to uncertain channel access, where the discovery burst includes the burst of SS / PBCH blocks, and PDCCH / PDSCH for RMSI and CSI-RS (if configured). Indicates to the UE the parameters used to derive the QCL assumptions for SS / PBCH blocks within and across DBTWs (indicated as ), so that if for those with candidate SS / PBCH block index SS / PBCH blocks, If the SS / PBCH blocks are the same, then those SS / PBCH blocks are quasi-co-located. Figure 8 A diagram of the DBTW and the QCL assumption within the DBTW is shown in FIG.

[0132] Figure 8 Example DBTW and QCL assumptions in window 800 are shown in accordance with an embodiment of the present disclosure. Figure 8 The illustrated embodiments of DBTW and QCL assumptions in window 800 are for illustration only. Figure 8 One or more of the components shown in the may be implemented in dedicated circuits configured to perform the mentioned functions, or one or more of the components may be implemented by one or more processors executing instructions to perform the mentioned functions.

[0133] The CSI-RS may also be configured as part of a discovery burst. Based on the configured time domain resources for the CSI-RS, the UE is able to determine whether the CSI-RS is located in the DBTW. Specifically, if the CSI-RS is used for RRM measurement, the CSI-RS may be further configured to be quasi-co-located with the SS / PBCH block, or further configured to be associated with the SS / PBCH block.

[0134] Due to potential failure of channel access, the intended transmission of CSI-RS may not actually occur.In addition to the mechanisms supported for operation without shared spectrum channel access, a mechanism may also be supported to indicate to the UE whether to transmit CSI-RS.

[0135] The present disclosure provides several components that may be used in conjunction or combination with other components, or may operate as standalone solutions.

[0136] In one example, at least one of the methods of the present disclosure is applicable to the following situation: wherein the symbol set of the time slot for receiving CSI-RS configured by higher layer parameters is indicated to the UE as flexible through tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated.

[0137] In another example, at least one of the methods of the present disclosure is applicable to the following situation: wherein a symbol set of a time slot for receiving a CSI-RS configured by a higher layer parameter is not provided with information from tdd-UL-DL-ConfigurationCommon and tdd-UL-DL-ConfigurationDedicated.

[0138] In yet another example, at least one of the methods of the present disclosure is applicable to the following situation: wherein, if the channel occupancy is provided by DCI format 2_0, the symbol of the time slot for receiving the CSI-RS configured by the higher layer parameters is within the channel occupancy.

[0139] In yet another example, at least one of the methods of the present disclosure is applicable to the following situation: if the channel occupancy is provided by DCI format 2_0, the symbol of the time slot for receiving CSI-RS configured by the higher layer parameters is not within the channel occupancy.

[0140] In yet another example, at least one of the methods of the present disclosure is applicable to the following situation: wherein a symbol of a time slot configured by a higher layer parameter for receiving a CSI-RS is within a discovery burst transmission window.

[0141] In yet another example, depending on the configuration of the higher layer parameters, at least one of the methods of the present disclosure is applicable. For example, if the higher layer parameters are provided, at least one of the methods of the present disclosure is applicable, otherwise, NR Rel-15 CSI-RS verification is applicable.

[0142] In one embodiment, the SS / PBCH block may be used for verification of the transmission of the CSI-RS.

[0143] Fig. 9 An example CSI-RS validation based on SS / PBCH block 900 is shown according to an embodiment of the present disclosure. Fig. 9 The illustrated embodiment of CSI-RS validation based on SS / PBCH block 900 is for example only. Fig. 9 One or more of the components shown in the may be implemented in dedicated circuits configured to perform the mentioned functions, or one or more of the components may be implemented by one or more processors executing instructions to perform the mentioned functions.

[0144] In one example, for a symbol set of a time slot configured by a high-layer parameter for receiving a CSI-RS, if the UE detects that the symbol set of the time slot is included in a symbol of an SS / PBCH block for reception, the UE receives the CSI-RS. Fig. 9 As shown in (e.g., 901).

[0145] In one example, at least one of the following conditions for the example is provided. In one instance of the first condition, the symbol set in the time slot is indicated to the UE within the channel occupancy. In one instance of the second condition, the CSI-RS is configured to be quasi-co-located with the received SS / PBCH block. In one instance of the third condition, the CSI-RS is configured to be associated with the following SS / PBCH block, which has the same SS / PBCH block index as the received SS / PBCH block.

[0146] In another example, for a symbol set of a time slot configured by a high-layer parameter for receiving a CSI-RS, if the UE detects that the symbol set of the time slot overlaps with a symbol for a received SS / PBCH block, the UE receives the CSI-RS. Fig. 9 As shown in (e.g., 902).

[0147] In one example, at least one of the following conditions is provided. In one instance of the first condition, the UE is indicated that the symbol set in the time slot is within the channel occupancy. In one instance of the second condition, the CSI-RS is configured to be quasi-co-located with the received SS / PBCH block. In one instance of the third condition, the CSI-RS is configured to be associated with the following SS / PBCH block, which has the same SS / PBCH block index as the received SS / PBCH block. In one instance of the fourth condition, the UE is not indicated to transmit PUSCH, PUCCH, physical random access channel (PRACH) or sounding reference signal (SRS) in the symbol set of the time slot.

[0148] In yet another example, for a symbol set of a time slot configured by a higher layer parameter for receiving CSI-RS, if the UE receives a SS / PBCH block in the time slot, the UE receives CSI-RS. Fig. 9 As shown in (e.g., 903).

[0149] In one example, at least one of the following conditions is provided. In one instance of the first condition, the symbol set in the time slot is indicated to the UE within the channel occupancy. In one instance of the second condition, the CSI-RS is configured to be quasi-co-located with the received SS / PBCH block. In one instance of the third condition, the CSI-RS is configured to be associated with the following SS / PBCH block, which has the same SS / PBCH block index as the received SS / PBCH block. In one instance of the fourth condition, the UE is not indicated to transmit PUSCH, PUCCH, PRACH or SRS in the symbol set of the time slot.

[0150] Fig.10 Another example CSI-RS validation based on SS / PBCH block 1000 according to an embodiment of the present disclosure is shown. Fig.10 The embodiment of CSI-RS validation based on SS / PBCH block 1000 shown in FIG. 1 is for example only. Fig.10 One or more of the components shown in the may be implemented in dedicated circuits configured to perform the mentioned functions, or one or more of the components may be implemented by one or more processors executing instructions to perform the mentioned functions.

[0151] In one example, for a symbol set of a time slot configured by a higher layer parameter for receiving CSI-RS, the UE receives CSI-RS if the UE detects that the symbol set of the time slot is included in a symbol of an SS / PBCH block in DBTW, where the SS / PBCH block has a candidate SS / PBCH block index corresponding to the SS / PBCH block index provided by ssb-PositionsInBurst. This example is Fig.10 As shown in (e.g., 1001).

[0152] In one example, at least one of the following conditions for the example is provided. In one instance of the first condition, the symbol set in the time slot is indicated to the UE within the channel occupancy. In one instance of the second condition, the CSI-RS is configured to be quasi-co-located with the SS / PBCH block. In one instance of the third condition, the CSI-RS is configured to be associated with the SS / PBCH block. In one instance of the fourth condition, the PUSCH, PUCCH, PRACH, or SRS is not indicated to the UE to be transmitted in the symbol set of the time slot.

[0153] In another example, for a symbol set of a time slot configured by a higher layer parameter for receiving CSI-RS, if the UE detects that the symbol set of the time slot overlaps with a symbol of an SS / PBCH block in DBTW, the UE receives the CSI-RS, where the SS / PBCH block has a candidate SS / PBCH block index corresponding to the SS / PBCH block index provided by ssb-PositionsInBurst. This example is Fig.10 As shown in (e.g., 1002).

[0154] In one example, at least one of the following conditions for the example is provided. In one instance of the first condition, the symbol set in the time slot is indicated to the UE within the channel occupancy. In one instance of the second condition, the CSI-RS is configured to be quasi-co-located with the SS / PBCH block. In one instance of the third condition, the CSI-RS is configured to be associated with the SS / PBCH block. In one instance of the fourth condition, the PUSCH, PUCCH, PRACH, or SRS is not indicated to the UE to be transmitted in the symbol set of the time slot.

[0155] In yet another example, for a symbol set of a time slot configured by a higher layer parameter for receiving CSI-RS, if the UE detects that the time slot contains an SS / PBCH block in DBTW, the UE receives CSI-RS, wherein the SS / PBCH block has a candidate SS / PBCH block index corresponding to the SS / PBCH block index provided by ssb-PositionsInBurst. Fig.10 As shown in (e.g., 1003).

[0156] In one example, at least one of the following conditions for the example is provided. In one instance of the first condition, the symbol set in the time slot is indicated to the UE within the channel occupancy. In one instance of the second condition, the CSI-RS is configured to be quasi-co-located with the SS / PBCH block. In one instance of the third condition, the CSI-RS is configured to be associated with the SS / PBCH block. In one instance of the fourth condition, the PUSCH, PUCCH, PRACH, or SRS is not indicated to the UE to be transmitted in the symbol set of the time slot.

[0157] Fig.11 Yet another example CSI-RS validation based on SS / PBCH block 1100 according to an embodiment of the present disclosure is shown. Fig.11 The embodiment of CSI-RS validation based on SS / PBCH block 1100 shown in FIG. 1 is for example only. Fig.11 One or more of the components shown in the may be implemented in dedicated circuits configured to perform the mentioned functions, or one or more of the components may be implemented by one or more processors executing instructions to perform the mentioned functions.

[0158] In one example, for a symbol set of a time slot for receiving CSI-RS configured by a high-layer parameter, if the UE detects a first SS / PBCH block in a DBTW and the symbol set of the time slot for receiving CSI-RS is included in a symbol of a second SS / PBCH block, wherein the second SS / PBCH block is within the same DBTW as the first SS / PBCH block and is quasi-co-located with the first SS / PBCH block, the UE cancels reception of the CSI-RS. This example is Fig.11 As shown in (e.g., 1101).

[0159] In one example, at least one of the following conditions for the example is provided. In one instance of the first condition, the UE is not indicated to receive PDCCH, PDSCH or CSI-RS on the symbol set in the time slot. In one instance of the second condition, the UE is indicated that the symbol set in the time slot is within the channel occupancy. In one instance of the third condition, the CSI-RS is configured to be quasi-co-located with the first SS / PBCH block and the second SS / PBCH block. In one instance of the fourth condition, the CSI-RS is configured to be associated with the following SS / PBCH block, which has the same SS / PBCH block index as the first SS / PBCH block.

[0160] In yet another example, for a symbol set of a time slot for receiving CSI-RS configured by a high-layer parameter, if the UE detects a first SS / PBCH block in a DBTW and the symbol set of the time slot for receiving CSI-RS overlaps with a symbol of a second SS / PBCH block, wherein the second SS / PBCH block is within the same DBTW as the first SS / PBCH block and is quasi-co-located with the first SS / PBCH block, the UE cancels reception of the CSI-RS. This example is Fig.11 As shown in (e.g., 1102).

[0161] In one example, at least one of the following conditions for the example is provided. In one instance of the first condition, the UE is not indicated to receive PDCCH, PDSCH or CSI-RS on the symbol set in the time slot. In one instance of the second condition, the UE is indicated that the symbol set in the time slot is within the channel occupancy. In one instance of the third condition, the CSI-RS is configured to be quasi-co-located with the first SS / PBCH block and the second SS / PBCH block. In one instance of the fourth condition, the CSI-RS is configured to be associated with the following SS / PBCH block, which has the same SS / PBCH block index as the first SS / PBCH block.

[0162] In yet another example, for a symbol set of a time slot for receiving CSI-RS configured by a high-layer parameter, if the UE detects a first SS / PBCH block in a DBTW and the symbol set of the time slot for receiving CSI-RS is in the same time slot as a symbol of a second SS / PBCH block, wherein the second SS / PBCH block is in the same DBTW as the first SS / PBCH block and is quasi-co-located with the first SS / PBCH block, the UE cancels reception of CSI-RS. This example is Fig.11 As shown in (e.g., 1103).

[0163] In one example, at least one of the following conditions for the example is provided. In one instance of the first condition, the UE is not indicated to receive PDCCH, PDSCH or CSI-RS on the symbol set in the time slot. In one instance of the second condition, the UE is indicated that the symbol set in the time slot is within the channel occupancy. In one instance of the third condition, the CSI-RS is configured to be quasi-co-located with the first SS / PBCH block and the second SS / PBCH block. In one instance of the fourth condition, the CSI-RS is configured to be associated with the following SS / PBCH block, which has the same SS / PBCH block index as the first SS / PBCH block.

[0164] In one embodiment, the PDCCH for RMSI can be used for verification of the transmission of CSI-RS. The PDCCH for RMSI can be part of the discovery burst and shared with the channel access procedure using SS / PBCH blocks in the discovery burst. If CSI-RS is also configured as part of the discovery burst, the PDCCH for RMSI can be used for verification of the transmission of CSI-RS.

[0165] Fig.12 An example CSI-RS validation based on a CORESET for monitoring Type0-PDCCH 1200 according to an embodiment of the present disclosure is shown. Fig.12 The embodiment shown in FIG. 10 based on CSI-RS verification of a CORESET for monitoring Type0-PDCCH 1200 is for example only. Fig.12 One or more of the components shown in the may be implemented in dedicated circuits configured to perform the mentioned functions, or one or more of the components may be implemented by one or more processors executing instructions to perform the mentioned functions.

[0166] In one example, for a symbol set of a time slot configured by a high-layer parameter for receiving a CSI-RS, if the UE detects that the symbol set of the time slot is included in a symbol in a CORESET configured for monitoring a Type0-PDCCH, the UE receives the CSI-RS. Fig.12 As shown in (e.g., 1201).

[0167] In one example, CSI-RS and CORESET may be located in different RB sets.

[0168] In another example, at least one of the following conditions for this example is provided. In one instance of the first condition, the symbol set in the time slot is indicated to the UE within the channel occupancy. In one instance of the second condition, the CSI-RS is configured to be quasi-co-located with the CORESET. In one instance of the third condition, the UE is not indicated to transmit PUSCH, PUCCH, PRACH or SRS in the symbol set of the time slot.

[0169] In another example, for a symbol set of a time slot configured by a high-layer parameter for receiving a CSI-RS, if the UE detects that the symbol set of the time slot overlaps with a symbol in a CORESET for monitoring Type0-PDCCH, the UE receives the CSI-RS. Fig.12 As shown in (e.g., 1202).

[0170] In one example, at least one of the following conditions for this example is provided. In one instance of the first condition, the symbol set in the time slot is indicated to the UE within the channel occupancy. In one instance of the second condition, the CSI-RS is configured to be quasi-co-located with the CORESET. In one instance of the third condition, the UE is not indicated to transmit PUSCH, PUCCH, PRACH or SRS in the symbol set of the time slot.

[0171] In yet another example, for a symbol set of a time slot configured by a high-layer parameter for receiving a CSI-RS, if the UE is configured with a CORESET for monitoring Type0-PDCCH in the same time slot, the UE receives the CSI-RS. Fig.12 As shown in (e.g., 1203).

[0172] In one example, at least one of the following conditions for this example is provided. In one instance of the first condition, the symbol set in the time slot is indicated to the UE within the channel occupancy. In one instance of the second condition, the CSI-RS is configured to be quasi-co-located with the CORESET. In one instance of the third condition, the UE is not indicated to transmit PUSCH, PUCCH, PRACH or SRS in the symbol set of the time slot.

[0173] Fig.13 Another example CSI-RS validation based on a CORESET for monitoring Type0-PDCCH 1300 according to an embodiment of the present disclosure is shown. Fig.13 The embodiment shown in FIG. 10 based on CSI-RS verification of a CORESET for monitoring Type 0-PDCCH 1300 is for example only. Fig.13 One or more of the components shown in the may be implemented in dedicated circuits configured to perform the mentioned functions, or one or more of the components may be implemented by one or more processors executing instructions to perform the mentioned functions.

[0174] In one example, for a symbol set of a time slot for receiving CSI-RS configured by a high-layer parameter, if the UE detects a Type0-PDCCH in a first monitoring opportunity and the symbol set of the time slot for receiving CSI-RS is included in a symbol of a second monitoring opportunity, wherein a first SS / PBCH block associated with the second monitoring opportunity and a second SS / PBCH block associated with the first monitoring opportunity are within the same DBTW and the two SS / PBCH blocks are quasi-co-located, the UE cancels reception of the CSI-RS. This example is Fig.13 As shown in (e.g., 1301).

[0175] In one example, at least one of the following conditions for the example is provided. In one instance of the first condition, the UE is not indicated to receive PDCCH, PDSCH or CSI-RS on the symbol set in the time slot. In one instance of the second condition, the UE is indicated that the symbol set in the time slot is within the channel occupancy. In one instance of the third condition, the CSI-RS is configured to be quasi-co-located with the first SS / PBCH block and the second SS / PBCH block. In one instance of the fourth condition, the CSI-RS is configured to be associated with the following SS / PBCH block, which has the same SS / PBCH block index as the first SS / PBCH block; in the fifth condition, the two monitoring opportunities are in the same DBTW.

[0176] In yet another example, for a symbol set of a time slot for receiving CSI-RS configured by a high-layer parameter, if the UE detects a Type0-PDCCH in a first monitoring opportunity and the symbol set of the time slot for receiving CSI-RS overlaps with a symbol for a second monitoring opportunity, wherein a first SS / PBCH block associated with the second monitoring opportunity and a second SS / PBCH block associated with the first monitoring opportunity are within the same DBTW and the two SS / PBCH blocks are quasi-co-located, the UE cancels reception of the CSI-RS. This example is Fig.13 As shown in (e.g., 1302).

[0177] In one example, at least one of the following conditions for the example is provided. In one instance of the first condition, the UE is not indicated to receive PDCCH, PDSCH or CSI-RS on the symbol set in the time slot. In one instance of the second condition, the UE is indicated that the symbol set in the time slot is within the channel occupancy. In one instance of the third condition, the CSI-RS is configured to be quasi-co-located with the first SS / PBCH block and the second SS / PBCH block. In one instance of the fourth condition, the CSI-RS is configured to be associated with the following SS / PBCH block, which has the same SS / PBCH block index as the first SS / PBCH block; in the fifth condition, the two monitoring opportunities are in the same DBTW.

[0178] In yet another example, for a symbol set of a time slot for receiving CSI-RS configured by a high-layer parameter, if the UE detects a Type0-PDCCH in a first monitoring opportunity and a second monitoring opportunity is configured in the same time slot configured for receiving CSI-RS, wherein a first SS / PBCH block associated with the second monitoring opportunity and a second SS / PBCH block associated with the first monitoring opportunity are within the same DBTW and the two SS / PBCH blocks are quasi-co-located, the UE cancels reception of the CSI-RS. This example is Fig.13 As shown in (e.g., 1303).

[0179] In one example, at least one of the following conditions for the example is provided. In one instance of the first condition, the UE is not indicated to receive PDCCH, PDSCH or CSI-RS on the symbol set in the time slot. In one instance of the second condition, the UE is indicated that the symbol set in the time slot is within the channel occupancy. In one instance of the third condition, the CSI-RS is configured to be quasi-co-located with the first SS / PBCH block and the second SS / PBCH block. In one instance of the fourth condition, the CSI-RS is configured to be associated with the following SS / PBCH block, which has the same SS / PBCH block index as the first SS / PBCH block. In one instance of the fifth condition, the two monitoring opportunities are in the same DBTW.

[0180] In one embodiment, the PDSCH for RMSI may be used for verification of the transmission of CSI-RS. The PDSCH for RMSI may be part of the discovery burst and shared with the channel access procedure using SS / PBCH blocks in the discovery burst. If CSI-RS is also configured as part of the discovery burst, the PDSCH for RMSI may be used for verification of the transmission of CSI-RS.

[0181] In one example, for a symbol set of a time slot configured by a higher layer parameter for receiving CSI-RS, if the UE detects that the symbol set of the time slot is included in a symbol configured for receiving a PDSCH scheduled by Type0-PDCCH, the UE receives the CSI-RS.

[0182] In one example, at least one of the following conditions for the example is provided. In one instance of the first condition, the symbol set in the time slot is indicated to the UE within the channel occupancy. In one instance of the second condition, the CSI-RS is configured to be quasi-co-located with the PDSCH scheduled by Type0-PDCCH. In one instance of the third condition, the PUSCH, PUCCH, PRACH or SRS is not indicated to the UE to be transmitted in the symbol set of the time slot.

[0183] In another example, for a symbol set of a time slot configured by a higher layer parameter for receiving CSI-RS, if the UE detects that the symbol set of the time slot overlaps with a symbol configured for receiving PDSCH scheduled by Type0-PDCCH, the UE receives CSI-RS.

[0184] In one example, at least one of the following conditions for the example is provided. In one instance of the first condition, the symbol set in the time slot is indicated to the UE within the channel occupancy. In one instance of the second condition, the CSI-RS is configured to be quasi-co-located with the PDSCH scheduled by Type0-PDCCH. In one instance of the third condition, the PUSCH, PUCCH, PRACH or SRS is not indicated to the UE to be transmitted in the symbol set of the time slot.

[0185] In yet another example, for a symbol set of a slot for receiving a CSI-RS configured by a higher layer parameter, if the UE is configured to receive a PDSCH scheduled by a Type0-PDCCH in the same slot, the UE receives the CSI-RS.

[0186] In one example, at least one of the following conditions for the example is provided. In one instance of the first condition, the symbol set in the time slot is indicated to the UE within the channel occupancy. In one instance of the second condition, the CSI-RS is configured to be quasi-co-located with the PDSCH scheduled by Type0-PDCCH. In one instance of the third condition, the PUSCH, PUCCH, PRACH or SRS is not indicated to the UE to be transmitted in the symbol set of the time slot.

[0187] In one embodiment, PDCCH and / or PDSCH may be used for verification of the transmission of CSI-RS.

[0188] In one example, for a symbol set of a slot for receiving CSI-RS configured by a higher layer parameter, if the UE detects that the symbol set of the slot is included in a symbol configured for monitoring PDCCH or receiving PDSCH, the UE receives CSI-RS.

[0189] In one example, at least one of the following conditions for the example is provided. In one instance of the first condition, the symbol set in the time slot is indicated to the UE within the channel occupancy. In one instance of the second condition, the CSI-RS is configured to be quasi-co-located with the PDCCH or PDSCH (e.g., the PDCCH or PDSCH for OSI or paging). In one instance of the third condition, the UE is not indicated to transmit the PUSCH, PUCCH, PRACH or SRS in the symbol set of the time slot.

[0190] In yet another example, for a symbol set of a time slot configured by a higher layer parameter for receiving CSI-RS, if the UE detects that the symbol set of the time slot overlaps with a symbol configured for monitoring PDCCH or receiving PDSCH, the UE receives CSI-RS.

[0191] In one example, at least one of the following conditions for the example is provided. In one instance of the first condition, the symbol set in the time slot is indicated to the UE within the channel occupancy. In one instance of the second condition, the CSI-RS is configured to be quasi-co-located with the PDCCH or PDSCH (e.g., the PDCCH or PDSCH for OSI or paging). In one instance of the third condition, the UE is not indicated to transmit the PUSCH, PUCCH, PRACH or SRS in the symbol set of the time slot.

[0192] In yet another example, for a symbol set of a slot for receiving a CSI-RS configured by a higher layer parameter, if the UE is configured to monitor a PDCCH or receive a PDSCH in the same slot, the UE receives the CSI-RS.

[0193] In one example, at least one of the following conditions for the example is provided. In one instance of the first condition, the symbol set in the time slot is indicated to the UE within the channel occupancy. In one instance of the second condition, the CSI-RS is configured to be quasi-co-located with the PDCCH or PDSCH (e.g., the PDCCH or PDSCH for OSI or paging). In one instance of the third condition, the UE is not indicated to transmit the PUSCH, PUCCH, PRACH or SRS in the symbol set of the time slot.

[0194] In one embodiment, the second CSI-RS triggered by the DCI may be used for verification of the transmission of the first CSI-RS.

[0195] In one example, for a symbol set of a time slot configured by a higher layer parameter for receiving a first CSI-RS, if the UE detects that the symbol set of the time slot is included in a symbol configured by DCI for receiving a second CSI-RS, the UE receives the first CSI-RS.

[0196] In one example, at least one of the following conditions for the example is provided. In one instance of the first condition, the symbol set in the time slot is indicated to the UE within the channel occupancy. In one instance of the second condition, the first CSI-RS is configured to be quasi co-located with the second CSI-RS. In one instance of the third condition, the PUSCH, PUCCH, PRACH or SRS is not indicated to the UE in the symbol set of the time slot.

[0197] In another example, for a symbol set of a time slot configured by higher layer parameters for receiving a first CSI-RS, if the UE detects that the symbol set of the time slot overlaps with a symbol configured by DCI for receiving a second CSI-RS, the UE receives the first CSI-RS.

[0198] In one example, at least one of the following conditions for the example is provided. In one instance of the first condition, the symbol set in the time slot is indicated to the UE within the channel occupancy. In one instance of the second condition, the first CSI-RS is configured to be quasi co-located with the second CSI-RS. In one instance of the third condition, the PUSCH, PUCCH, PRACH or SRS is not indicated to the UE in the symbol set of the time slot.

[0199] In yet another example, for a symbol set of a time slot configured by a higher layer parameter for receiving a first CSI-RS, if the UE is configured by DCI to receive a second CSI-RS in the same time slot, the UE receives the first CSI-RS.

[0200] In one example, at least one of the following conditions for the example is provided. In one instance of the first condition, the symbol set in the time slot is indicated to the UE within the channel occupancy. In one instance of the second condition, the first CSI-RS is configured to be quasi co-located with the second CSI-RS. In one instance of the third condition, the PUSCH, PUCCH, PRACH or SRS is not indicated to the UE in the symbol set of the time slot.

[0201] Fig.14 1400 for determining a subcarrier offset on a licensed spectrum according to an embodiment of the present disclosure, such as may be performed by a UE (eg, Figure 1 111-116) shown in FIG. Fig.14 The embodiment of method 1400 shown in FIG. 1 is for example only. Fig.14 One or more of the components shown may be implemented in dedicated circuits configured to perform the functions mentioned, or one or more of the components may be implemented by one or more processors executing instructions to perform the functions mentioned.

[0202] like Fig.14 As shown in FIG. 14 , the method 1400 starts at step 1402. In step 1402, the UE receives a SS / PBCH block.

[0203] Then, in step 1404, the UE determines a higher layer parameter ssb-SubcarrierOffset based on the MIB of the PBCH included in the SS / PBCH block.

[0204] Next, in step 1406, the UE determines the bit position from the payload of the PBCH.

[0205] Finally, in step 1408, the UE Determine the first value (k SSB ). In step 1408, the second value The four LSBs are indicated by the higher-level parameter ssb-SubcarrierOffset, and the second value The MSB is represented by the instruct.

[0206] In one embodiment, the UE Identify And based on the determination To identify

[0207] In one embodiment, the UE determines the higher layer parameter subCarrierSpacingCommon based on the MIB of the PBCH included in the SS / PBCH block, and based on k SSB <24, determine the third value (k based on the LSB of the higher layer parameter subCarrierSpacingCommon and the higher layer parameter ssb-SubcarrierOffset SSB <4).

[0208] In one embodiment, the UE determines that the higher layer parameter subCarrierSpacingCommon is scs15or60 and the LSB of the higher layer parameter ssb-SubcarrierOffset is 0. Determined to be 1; based on the determination that the high-level parameter subCarrierSpacingCommon is scs15or60 and the LSB of the high-level parameter ssb-SubcarrierOffset is 1, Determined to be 2; Based on the determination that the high-level parameter subCarrierSpacingCommon is scs30or120 and the LSB of the high-level parameter ssb-SubcarrierOffset is 0, is determined to be 4; or based on the determination that the higher-level parameter subCarrierSpacingCommon is scs30or120 and the LSB of the higher-level parameter ssb-SubcarrierOffset is 1, Confirmed to be 8.

[0209] In one embodiment, the UE determines a symbol set of a time slot configured by a higher layer parameter for receiving CSI-RS, determines a DBTW, and determines whether to receive CSI-RS in the symbol set based on a first SS / PBCH block in the DBTW.

[0210] In one embodiment, the UE determines to receive CSI-RS in a symbol set of a time slot configured by higher-level parameters based on a determination that a first SS / PBCH block is in a DBTW and the symbol set overlaps with the first SS / PBCH block, and determines not to receive CSI-RS in a symbol set of a time slot configured by higher-level parameters based on a determination that the first SS / PBCH block is in a DBTW and the symbol set overlaps with a second SS / PBCH block in the DBTW.

[0211] In such an embodiment, the first SS / PBCH block and the second SS / PBCH block are quasi co-located.

[0212] The above process illustrates an example method that can be implemented according to the principles of the present disclosure, and various changes can be made to the method shown in the flowchart in this article. For example, although shown as a series of steps, the individual steps in each figure can overlap, occur in parallel, occur in a different order, or occur multiple times. In another example, a step can be omitted or replaced by another step.

[0213] Although the present disclosure has been described using exemplary embodiments, various changes and modifications may be suggested to those skilled in the art. The present disclosure is intended to include such changes and modifications that fall within the scope of the appended claims. Any of the descriptions in this application should not be construed as implying that any particular element, step or function is an essential element that must be included within the scope of the claims. The scope of the subject matter of patent protection is defined by the claims.

Claims

1. A terminal in a wireless communication system operating with shared spectrum channel access, the terminal comprising: Transceiver; as well as The controller is configured as: receiving a synchronization signal and physical broadcast channel (SS / PBCH) block via a transceiver, identifying the first information based on a master information block (MIB) of a PBCH included in the SS / PBCH block, identifying the second information based on a payload of the PBCH, and determining a first value associated with a subcarrier offset for the SS / PBCH block based on the second value, wherein four least significant bits (LSBs) of the second value are indicated by the first information and a most significant bit (MSB) of the second value is indicated by the second information, wherein, in the case where the second value is equal to or greater than 24, the first value is determined to be the second value, and In the case where the second value is less than 24, the first value is determined as a product of 2 and a floor-rounded value of the second value divided by 2.

2. The terminal according to claim 1, wherein: The controller is also configured to: identifying, based on the MIB of the PBCH included in the SS / PBCH block, third information on a subcarrier spacing used for the SS / PBCH block, and A third value associated with a quasi co-location (QCL) relationship for the SS / PBCH block is determined based on the third information and the LSB of the first information.

3. The terminal according to claim 2, wherein: In the case where the third information corresponds to 15kHz or 60kHz and the LSB of the first information is 0, the third value is determined to be 1, In the case where the third information corresponds to 15kHz or 60kHz and the LSB of the first information is 1, the third value is determined to be 2, In the case where the third information corresponds to 30 kHz or 120 kHz and the LSB of the first information is 0, the third value is determined to be 4, or In the case where the third information corresponds to 30 kHz or 120 kHz and the LSB of the first information is 1, the third value is determined to be 8.

4. A base station in a wireless communication system operating with shared spectrum channel access, the base station comprising: Transceiver; as well as The controller is configured as: generating a master information block (MIB) of a physical broadcast channel (PBCH) included in a synchronization signal and physical broadcast channel (SS / PBCH) block, wherein the first information is included in the MIB, generating a payload of a PBCH, wherein the second information is included in the payload of the PBCH, and Transmitting via the transceiver an SS / PBCH block including the MIB and payload of the PBCH, wherein a first value associated with a subcarrier offset of a SS / PBCH block is determined based on a second value, four least significant bits (LSBs) of the second value are indicated by the first information, and a most significant bit (MSB) of the second value is indicated by the second information, wherein, in the case where the second value is equal to or greater than 24, the first value is determined to be the second value, and In the case where the second value is less than 24, the first value is determined as a product of 2 and a floor-rounded value of the second value divided by 2.

5. The base station according to claim 4, wherein: The third information about the subcarrier spacing for the SS / PBCH block is included in the MIB of the PBCH included in the SS / PBCH block, and A third value associated with a quasi co-location (QCL) relationship for the SS / PBCH block is determined based on the third information and the LSB of the first information.

6. The base station according to claim 5, wherein: In the case where the third information corresponds to 15kHz or 60kHz and the LSB of the first information is 0, the third value is determined to be 1, In the case where the third information corresponds to 15kHz or 60kHz and the LSB of the first information is 1, the third value is determined to be 2, In the case where the third information corresponds to 30 kHz or 120 kHz and the LSB of the first information is 0, the third value is determined to be 4, or In the case where the third information corresponds to 30 kHz or 120 kHz and the LSB of the first information is 1, the third value is determined to be 8.

7. A method performed by a terminal in a wireless communication system operating with shared spectrum channel access, the method comprising: Receive synchronization signal and physical broadcast channel (SS / PBCH) blocks; identifying the first information based on a master information block (MIB) of a PBCH included in the SS / PBCH block; identifying the second information based on a payload of the PBCH; as well as determining a first value associated with a subcarrier offset for the SS / PBCH block based on the second value, wherein four least significant bits (LSBs) of the second value are indicated by the first information and a most significant bit (MSB) of the second value is indicated by the second information, wherein, in the case where the second value is equal to or greater than 24, the first value is determined to be the second value, and In the case where the second value is less than 24, the first value is determined as a product of 2 and a floor-rounded value of the second value divided by 2.

8. The method according to claim 7, further comprising: identifying, based on the MIB of the PBCH included in the SS / PBCH block, third information on a subcarrier spacing used for the SS / PBCH block, and A third value associated with a quasi co-location (QCL) relationship for the SS / PBCH block is determined based on the third information and the LSB of the first information.

9. The method according to claim 8, wherein: In the case where the third information corresponds to 15kHz or 60kHz and the LSB of the first information is 0, the third value is determined to be 1, In the case where the third information corresponds to 15kHz or 60kHz and the LSB of the first information is 1, the third value is determined to be 2, In the case where the third information corresponds to 30 kHz or 120 kHz and the LSB of the first information is 0, the third value is determined to be 4, or In the case where the third information corresponds to 30 kHz or 120 kHz and the LSB of the first information is 1, the third value is determined to be 8.

10. A method performed by a base station in a wireless communication system operating with shared spectrum channel access, the method comprising: generating a master information block (MIB) of a physical broadcast channel (PBCH) included in a synchronization signal and physical broadcast channel (SS / PBCH) block, wherein the first information is included in the MIB; generating a payload of a PBCH, wherein the second information is included in the payload of the PBCH; and Transmits SS / PBCH blocks including the MIB and payload of PBCH, wherein a first value associated with a subcarrier offset of a SS / PBCH block is determined based on a second value, four least significant bits (LSBs) of the second value are indicated by the first information, and a most significant bit (MSB) of the second value is indicated by the second information, wherein, in the case where the second value is equal to or greater than 24, the first value is determined to be the second value, and In the case where the second value is less than 24, the first value is determined as a product of 2 and a floor-rounded value of the second value divided by 2.

11. The method according to claim 10, in, third information about a subcarrier spacing for the SS / PBCH block is included in a MIB of a PBCH included in the SS / PBCH block, and a third value associated with a quasi co-location (QCL) relationship for the SS / PBCH block is determined based on the third information and an LSB of the first information, and Wherein, in the case where the third information corresponds to 15kHz or 60kHz and the LSB of the first information is 0, the third value is determined to be 1, In the case where the third information corresponds to 15kHz or 60kHz and the LSB of the first information is 1, the third value is determined to be 2, In the case where the third information corresponds to 30 kHz or 120 kHz and the LSB of the first information is 0, the third value is determined to be 4, or In the case where the third information corresponds to 30 kHz or 120 kHz and the LSB of the first information is 1, the third value is determined to be 8.

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