CORESET configuration for narrowband new radio

Abstract

A user equipment (UE) triggers a resource block (RB) offset allocation determination, the UE detects at least one of a primary synchronization signal (PSS) and a secondary synchronization signal (SSS) within a received synchronization signal (SS) block (SSB), the UE reads physical broadcast channel (PBCH) parameters and signaled offsets from a master information block (MIB) of a PBCH of the SSB, the UE determines an RB offset based on the PBCH parameters and the signaled offsets, and the UE determines a control resource set (CORESET) frequency position based on the RB offset. Various techniques for a method including these are provided.

Description

Technical Field

[0001] This description is related to wireless communication.

Background Art

[0002] A communication system may be a function that enables communication between two or more nodes or devices, such as a fixed communication device or a mobile communication device. Signals can be carried over a wired carrier or a wireless carrier.

[0003] An example of a cellular communication system is an architecture standardized by the 3rd Generation Partnership Project (3GPP: 3 rd Generation Partnership Project). Recent developments in this field are often referred to as the Long-Term Evolution (LTE) of the Universal Mobile Telecommunications System (UMTS) radio access technology. E-UTRA (Evolved UMTS Terrestrial Radio Access) is the air interface of the long-term evolution (LTE) upgrade path for 3GPP's mobile network. In LTE, a base station or access point (AP) called an evolved Node B (eNB) provides wireless access within a coverage area or cell. In LTE, a mobile device or mobile station is called a user equipment (UE). LTE has included multiple improvements or developments. Each feature of LTE continues to be improved.

[0004] The development of 5G New Radio (NR) is part of the evolution of mobile broadband, similar to the evolution of previous 3G and 4G wireless networks, continuing to meet the requirements of 5G. In addition to mobile broadband, 5G also targets newly emerging use cases. The goal of 5G is to achieve significant improvements in wireless performance, which may include new levels of data rate, latency, reliability, and security. 5G NR may be scaled up to efficiently connect large-scale Internet of Things (IoT) and can provide new kinds of mission-critical services. For example, ultra-reliable and low-latency communications (URLLC) devices may require high reliability and extremely low latency. [Overview of the project]

[0005] According to an example embodiment, a device, a system, a non-transient computer-readable medium (containing computer-executable program code that can be run on a computer system), and / or a method can perform a process, according to an example embodiment, that includes determining a control resource set (CORESET) frequency position from a punctured synchronization signal block. The method may include: triggering a resource block (RB) offset assignment determination by a user device (UE); detecting at least one of a primary synchronization signal (PSS) and a secondary synchronization signal (SSS) in a received synchronization signal (SSB) block by the UE; reading physical broadcast channel (PBCH) parameters and signaled offsets from the master information block (MIB) of the PBCH of the SSB by the UE; determining an RB offset based on the PBCH parameters and signaled offsets by the UE; and determining a control resource set (CORESET) frequency position based on the RB offsets by the UE.

[0006] The implementation may include one or more of the following features: For example, the PBCH parameter may be a subcarrier offset (k_SSB). The trigger for RB offset assignment determination may be based on a predefined synch raster point. The trigger for RB offset assignment determination may be based on a radio frequency (RF) channel. The RB offset may be the difference between the lower end of either the PSS or SSS and the lower end of the CORESET. The RB offset may be the difference between the lower end of the SSB and the lower end of the CORESET.

[0007] The PBCH parameter can be k_SSB, and the RB offset can be determined using a table containing k_SSB and the signaled offset. The RB offset can be determined using a table containing the signaled index within the MIB. The SSB can contain at least one punctured Physical Resource Block (PRB). The SSB can contain five punctured PRBs, with at least one PRB punctured on both sides of the PBCH. The SSB can be a punctured SSB, and the determined CORESET frequency position can be aligned at frequency to at least one of the following: the lower end of the CORESET may be aligned with the lower end of the punctured SSB, the CCE boundary of the CORESET may be aligned with the lower end of the punctured SSB, or the CCE boundary of the CORESET may be aligned with the upper end of the punctured SSB. This method may further include monitoring the Type0_PDCCH from the determined CORESET by the UE. This method may further include, in response to detecting the PDCCH of SIB1, the UE receiving a PDSCH based on the detected PDCCH.

[0008] According to another embodiment, a device, a system, a non-transient computer-readable medium (containing computer-executable program code that can be run on a computer system), and / or a method can perform a process, according to the embodiment, including determining a control resource set (CORESET) frequency position from a punctured synchronization signal block. The method includes, by a network device, determining the control resource set (CORESET) frequency position based on a physical resource block (PRB) puncture pattern; by a network device, determining a resource block (RB) offset based on the CORESET position; and by a network device, being configured to indicate the RB offset in the Master Information Block (MIB) of the PBCH of the synchronization signal (SS) block (SSB). 、 This may include transmitting physical broadcast channel (PBCH) parameters and the signaled offset, and transmitting SSB by a network device.

[0009] An implementation may include one or more of the following features: For example, the PBCH parameter may be a subcarrier offset (k_SSB). The RB offset may be the difference between the lower end of one of the primary synchronization signals (PSS) or secondary synchronization signals (SSS) and the lower end of the CORESET. The RB offset may be the difference between the lower end of the SSB and the lower end of the CORESET. The PBCH parameter may be k_SSB, and the RB offset may be determined using a table containing k_SSB and the signaled offset. The RB offset may be determined using a table containing the signaled index in the MIB. The SSB may include at least one punctured physical resource block (PRB). The SSB may include five punctured PRBs, with at least one PRB punctured on both sides of the PBCH. The determined CORESET frequency position can be aligned in frequency to at least one of the following: the lower end of the CORESET can be aligned with the lower end of the punctured SSB; the CCE boundary of the CORESET can be aligned with the lower end of the punctured SSB; or the CCE boundary of the CORESET can be aligned with the upper end of the punctured SSB.

[0010] Details of one or more examples of the embodiments are shown below in the accompanying drawings and description. Other features will become apparent from the description and drawings, as well as from the claims. [Brief explanation of the drawing]

[0011] [Figure 1] This is a block diagram of a wireless network according to an example embodiment. [Figure 2A] A block diagram showing a synchronization signal block according to an example embodiment. [Figure 2B] This block diagram shows the resource block offset in a punctured synchronization signal block according to an example embodiment. [Figure 2C]This block diagram shows the resource block offset in a punctured synchronization signal block according to an example embodiment. [Figure 2D] This block diagram shows the resource block offset in a punctured synchronization signal block according to an example embodiment. [Figure 3] This is a block diagram showing a puncture pattern of a synchronization signal block according to an example embodiment. [Figure 4] This is a block diagram of a method for determining the initial bandwidth portion according to an example embodiment. [Figure 5] This is a block diagram of a method for determining the frequency position of a control resource set (CORESET) within a punctured synchronization signal block according to an example embodiment. [Figure 6] This is a block diagram of a method for transmitting a punctured synchronization signal block according to an example embodiment. [Figure 7] This is a block diagram of a radio station or wireless node (e.g., AP, BS, gNB, RAN node, relay node, UE or user device, network node, network entity, DU, CU-CP, CU-CP, ... or other node) according to an example embodiment. [Modes for carrying out the invention]

[0012] Figure 1 is a block diagram of a wireless network 130 according to an example embodiment. In the wireless network 130 of Figure 1, user devices 131, 132, 133, and 135, sometimes called mobile stations (MS) or user equipment (UE), may be connected to (and communicate with) a base station (BS) 134, sometimes called an access point (AP), an enhanced node B (eNB), a BS, a next-generation node B (gNB), a next-generation enhanced node B (ng-eNB), or a network node. The terms user device and user equipment (UE) may be used interchangeably. A BS may include, or be called, a radio access network (RAN) node, and may include a portion of a BS or a portion of a RAN node (e.g., a centralized unit (CU) and / or a distributed unit (DU) in the case of a segmented BS). Functions of BS (e.g., access point (AP), base station (BS), or (e)node B (eNB), BS, RAN node) sex At least a portion of this may be run by any node, server, or host that can be operably coupled to a transceiver such as a remote radio head. BS (or AP) 134 provides wireless coverage within cell 136, including user devices (or UEs) 131, 132, 133, and 135. Although only four user devices (or UEs) are shown connected to or mounted on BS134, any number of user devices may be provided. BS134 is also connected to the core network 150 via an S1 interface or NG interface 151. This is merely one simple example of a wireless network, and other wireless networks may be used.

[0013] A base station (e.g., BS134) is an example of a radio access network (RAN) node in a wireless network. A BS (or RAN node) may be, or include (or be considered as) an access point (AP), gNB, eNB, or a part thereof (such as a centralized unit (CU) and / or distributed unit (DU) in the case of a segmented BS or segmented gNB), or other network nodes. For example, a BS (or gNB) may include a network entity of a distributed unit (DU), such as a gNB-distributed unit (gNB-DU), and a centralized unit (CU) that can control multiple DUs. In some cases, for example, a centralized unit (CU) may be divided or separated into control plane entities such as a gNB-centralized (or central) unit-control plane (gNB-CU-CP) and user plane entities such as a gNB-centralized (or central) unit-user plane (gNB-CU-UP). For example, subentities of a CU (gNB-CU-CP, gNB-CU-UP) may run or be provided on the same hardware or server, in the cloud, etc., or on different hardware, systems, or servers (e.g., physically separated or running on different systems, hardware, or servers), or as different logical entities or different software entities (e.g., as separate or communicating software entities).

[0014] As stated, in a split configuration of gNB / BS, the functions of the gNB may be split between DUs and CUs. A distributed unit (DU) may provide or establish wireless communication with one or more UEs. Thus, a DU may provide one or more cells, enabling UEs to communicate with the DU to receive wireless services and / or establish a connection with the DU, such as enabling UEs to transmit or receive data. A centralized (or central) unit (CU) may provide control functions and / or data plane functions to one or more connected DUs, including control functions such as gNB control of user data transfer, mobility control, radio access network sharing, positioning, and session management, excluding functions exclusively assigned to the DUs. The CU may control the operation of the DUs via a fronthaul (Fs) interface (e.g., the CU communicates with one or more DUs).

[0015] In one example, a BS node (e.g., BS, eNB, gNB, CU / DU, ...) or a radio access network (RAN) may generally be part of a mobile telecommunications system. The RAN (Radio Access Network) may include one or more BS or RAN nodes that implement radio access technology, for example, to enable one or more UEs to access the network or core network. Thus, for example, a RAN (RAN node such as a BS or gNB) may be located between one or more user devices or UEs and the core network. In an example embodiment, each RAN node (e.g., BS, eNB, gNB, CU / DU, ...) or BS may provide one or more wireless communication services to one or more UEs or user devices, for example, to enable a UE to wirelessly access the network via the RAN node. Each RAN node or BS may perform or provide wireless communication services, for example, enabling a UE or user device to establish a wireless connection with the RAN node, and performing transmission and / or reception of data to and from one or more of the UEs. For example, after establishing a connection with a UE, a RAN node (e.g., BS, eNB, gNB, CU / DU, ...) may forward data received from the network or core network to the UE, and / or forward data received from the UE to the network or core network. A RAN node (e.g., BS, eNB, gNB, CU / DU, ...) may perform a wide variety of other wireless functions or services, such as broadcasting control information (e.g., system information) to the UE, paging the UE when there is data to be delivered to the UE, assisting in the handover of UEs between cells, scheduling resources for uplink data transmission from the UE and downlink data transmission to the UE, and transmitting control information to configure one or more UEs. There are several examples of one or more functions that a RAN node or BS may perform.A base station may be the distributed unit (DU) portion of an IAB (Integrated Access and Backhaul) node (also known as a relay node). The DU facilitates access link connectivity for the IAB node.

[0016] User devices (such as user terminals, user equipment (UEs), mobile terminals, and handheld wireless devices) may refer to portable computing devices that include wireless mobile communication devices that operate with or without a subscriber identification module (SIM) (sometimes called a universal SIM), and include, but are not limited to, devices of the type of mobile station (MS), mobile phones, cell phones, smartphones, personal digital assistants (PDAs), handsets, devices that use wireless modems (such as alarm or measuring devices), laptop computers and / or touchscreen computers, tablets, phablets, game consoles, notebooks, vehicles, sensors, and multimedia devices, or any other wireless devices. User devices may also be (or include) devices that are almost exclusively uplink-only, and it should be understood that an example of such a device is a camera or video camera that loads images or video clips into the network. User devices may also be the MT (Mobile Termination) portion of an IAB (Integrated Access and Backhaul) node (also known as a relay node). MT facilitates backhaul connectivity for IAB nodes. For example, UE can be installed on trains in the Future Railway Mobile Communication System (FRMCS).

[0017] As an example, in LTE, the core network 150 may be commonly referred to as an Evolved Packet Core (EPC). The Evolved Packet Core (EPC) may include a Mobility Management Entity (MME) that can handle or assist in the mobility / handover of user devices between base stations, one or more gateways that can transfer data and control signals between a base station and a packet data network or the Internet, and other control functions or blocks. Other types of wireless networks, such as 5G (which may be referred to as New Radio (NR)), may also include a core network (e.g., in 5G / NR, it may be referred to as 5GC).

[0018] In addition, as an example, the various embodiments or techniques described herein may be applicable to various types of user devices or types of data services, or may be applicable to a user device on which multiple applications that may be different types of data services can be executed. The development of New Radio (5G) can support multiple different applications or multiple different types of data services, examples of which include Machine Type Communications (MTC), Enhanced Machine Type Communication (eMTC), Massive Machine Type Communications (mMTC), Internet of Things (IoT) and / or narrowband IoT user devices, Enhanced Mobile Broadband (eMBB), and Ultra-Reliable Low-Latency Communications (URLLC). Many of these new 5G (NR)-related applications may generally require higher performance than previous wireless networks.

[0019] IoT is an Internet connection sex or a network connection sexOften refers to a growing group of objects that may include these objects to be able to send information to other network devices and receive information from other network devices. For example, many sensor-type applications or devices can monitor physical conditions or states and can send reports to a server or other network devices when an event occurs, for example. Machine-Type Communication (MTC or Machine-to-Machine Communication) may be characterized, for example, by the fully automated generation, exchange, processing, and operation of data between intelligent machines, with or without human intervention. Enhanced Mobile Broadband (eMBB) may support data rates much higher than those currently available with LTE.

[0020] Ultra-Reliable Low-Latency Communication (URLLC) is a new type of data service or new usage scenario that can be supported for a New Radio (5G) system. Ultra-Reliable Low-Latency Communication (URLLC) enables emerging applications and services such as industrial automation, autonomous driving, vehicle safety, e-health services, etc. 3GPP aims, for example, to provide a connection with a block error rate (BLER: block error rate) of 10 ー5 and a reliability corresponding to a maximum U-plane (user / data plane) latency of up to 1 ms. Thus, for example, a URLLC user device / UE may require a short latency (with or without the requirement for high simultaneous reliability) in addition to a significantly lower block error rate than other types of user devices / UEs. Thus, for example, a URLLC UE (or a URLLC application on the UE) may require a much shorter latency compared to an eMBB UE (or an eMBB application running on the UE).

[0021] Various embodiments may be applied to a wide variety of wireless technologies or wireless networks, such as LTE, LTE-A, 5G (New Radio (NR)), 5G Advanced, Narrowband New Radio Operations (NB NR), centimeter-wave and / or millimeter-wave networks, IoT, MTC, eMTC, mMTC, eMBB, URLLC, or any other wireless network or wireless technology. These exemplary network, technology, or data service types are provided merely as examples.

[0022] A UE may be configured by a gNB (or other network node) to perform different measurements and measurements to report to the network (or gNB(s)). The configuration of the UE for performing reference signal (or beam) measurements (e.g., CSI-RS measurements of different beams) and reporting may be performed by a gNB that sends a reporting configuration (e.g., a CSI reporting configuration) to the UE. The reporting configuration may specify, for example, the downlink resource on which the measurement should be performed (e.g., a CSI-RS reference signal / SSB, or beam), the specific quantity or parameter to be measured, and how the reporting should be performed, such as when the reporting should be performed.

[0023] 5G Advanced can be the next stage of evolution in 5G technology. 5G Advanced can add extensions beyond connectivity, enabling a wider range of advanced use cases vertically. In addition to improved mobility and reliability, 5G Advanced can support advanced applications with artificial intelligence (AI) and machine learning (ML) that improve network performance. 5G Advanced can introduce improvements in spectral efficiency and energy savings. 5G Advanced can build a foundation for more demanding applications and a wider range of use cases, with truly immersive user experiences based on extended reality (XR) capabilities. 5G Advanced can introduce AI and ML enhancements across the RAN, core, and network management layers for improved performance, network optimization, and energy efficiency. 5G Advanced can be backward compatible, including the ability to serve existing 5G devices. 5G Advanced can add capabilities related to XR (e.g., AR, VR, gaming), improved coverage and MIMO performance, GSM-R alternatives, new types of devices, cellular-based positioning, time synchronization, network operational efficiency (e.g., using AI and ML technologies), improved sidelinks, and improved mobility. Enabling new radio-based mission-critical networks for sub-5MHz spectrum allocations could be an example of new 5G Advanced capabilities being considered.

[0024] The UE may measure the signal parameters (e.g., reference signal received power (RSRP)) of each of several downlink reference signals (e.g., synchronization signal block / SSB signals, or channel state information (CSI-RS) reference signals) received by the UE from a gNB / network node (or BS), and each reference signal may be transmitted by the gNB via a different gNB transmit beam (or via a different downlink DL reference signal). The UE may determine the strongest beam or reference signal (e.g., the one with the highest RSRP), and then send a measurement report to the gNB, which may identify, for example, the N strongest DL reference signals (or beams) and the RSRP (or other measured signal parameters) of these N beams. The gNB may use this measurement report to determine, for example, which beam to use to communicate with the UE.

[0025] According to an example embodiment, a PDCCH (Physical Downlink Control Channel) may be transmitted using 1, 2, 4, 8, or 16 control-channel elements (CCEs), the number of CCEs may be referred to as the aggregation level (or CCE aggregation level). CCEs can be aggregated to include PDCCH candidates and may be a set of resources that are continuous or discontinuous in frequency. Resource Element Group (REG) bundles may be continuous in frequency. However, a CCE containing multiple REG bundles may be continuous or discontinuous (i.e., it may be an interleaved or uninterleaved mapping from CCE to REG). According to an example embodiment, a CCE is a component of a PDCCH, and a CCE may be the smallest set of resources that can be used for a PDCCH. For example, a CCE may be a unit in which a search space for blind decoding can be defined. Thus, each PDCCH may contain one or more CCEs depending on the aggregation level. According to one embodiment, the CCE may include six resource element groups (REGs), each of which may include one resource block in an OFDM symbol.

[0026] A search space may include a set of candidate PDCCHs (candidate downlink control channels) formed by the CCE at a specific aggregation level, which the UE is to attempt to decode. The UE may have multiple search spaces for various purposes, such as different common search spaces and user-specific search spaces. A search space may be associated with one or more control resource sets (CORESETs). A CORESET may be (or contain) a time-frequency resource on which PDCCHs are transmitted. Multiple search spaces may exist using the same control resource set (CORESET), and multiple configured CORESETs may exist for a UE. A control resource set (CORESET) may also be (or contain) a time-frequency resource on which the UE attempts to decode candidate PDCCHs using one or more search spaces. A UE may be configured with up to four bandwidth parts (BWPs) per serving cell, different BWPs may be configured with different numerologies, and a gNB may dynamically switch between different BWPs by configuration or by Downlink Control Information (DCI) messages. One BWP may be active at any given time, and up to three CORESETs and up to ten Search Space Sets (SS Sets) may be configured per BWP. CORESETs may be limited to the bandwidth of a BWP, as the UE may be constrained to receive / transmit only within the BW of the active BWP. In an active BWP, the UE may be configured to monitor a total of up to three unicast DCI format sizes and up to four DCI format sizes.

[0027] Figure 2A is a block diagram showing a synchronization signal block according to an example embodiment. The synchronization signal block, SSB, or SSB subcarrier may include a physical broadcast channel (PBCH) 205, a primary synchronization signal (PSS) 210, and a secondary synchronization signal (SSS) 215. The SSB subcarrier may be configured to enable a UE to find a cell when entering the system and to find new cells when moving within the system. The SSB subcarrier may be transmitted periodically from each NR cell on the downlink. The SSB subcarrier may be OFDM-based and transmitted in a set of time / frequency resources or resource elements within an OFDM time-frequency resource grid. For each cell, there may be multiple SSBs specific to gNB Tx beams. Figure 2A shows the time / frequency structure of the SSB. The SSB can spread across four OFDM symbols in the time domain and across 240 subcarriers in the frequency domain.

[0028] As shown in Figure 2A, an SSB subcarrier can contain n physical resource blocks or PRBs in the frequency domain. An SSB can occupy 240 subcarriers, and if an SSB subcarrier is aligned with a PRB subcarrier, one PRB can contain 12 subcarriers. Therefore, n can be equal to 20, and the SSB subcarrier can occupy 20 PRBs in the frequency domain. PSS210 resides within the first OFDM symbol of the SSB subcarrier and can occupy 127 subcarriers or 12 PRB subcarriers (e.g., y=12). SSS215 can reside within the third OFDM symbol of the SSB subcarrier and can occupy the same 127 subcarriers or 10 PRBs as PSS210. PBCH205 resides within the second and fourth OFDM symbols of the SSB subcarrier and can occupy 240 subcarriers or 20 PRB subcarriers (e.g., n=20). PBCH205 can also occupy 48 subcarriers or 12 PRB subcarriers (e.g., x=4) on either side of SSS215. Between PBCH205 and SSS215, there can be unused subcarriers, shown in Figure 2A as z1 and z2. In an exemplary implementation, z1 could be 8 subcarriers and z2 could be 9 subcarriers. In the example shown in Figure 2A, x+z1+y+z2+x=n (e.g., 48+8+127+9+48=240 (or 20 PRBs)). Different numerology (e.g., values ​​for n, x, y, z1, and z2) can be used for the SSB subcarriers.

[0029] Symbolic implementations can relate to narrowband nu-radio operations (NB NR) or NR support for dedicated spectrum below 5 MHz. This is a newly emerging situation driven, for example, by future rail communications, smart grid operators, and public safety. Symbolic implementations can target the use of NR in 3–5 MHz spectrum allocations. In other words, symbolic implementations can enable 5G NR operation in bandwidths narrower than the originally designed 5 MHz channel (e.g., up to 3 MHz). For example, the deployment of NR in the 900 MHz FRMCS (Next Generation Rail Mobile Communications System) band could be done alongside conventional GSM-R carriers within a 5.6 MHz bandwidth, allowing only about 3.6 MHz to be used for NR. Similarly, there are several instances where only 3 MHz channels are available for NR. The signals and channels transmitted by NR base stations (gNBs), more specifically the synchronous signals and PBCH block (SSB) signals and channels, were not designed for transmission on such narrow channels. However, the x PRBs shown in Figure 2A (e.g., the four PRBs on either side of SSS215 and PSS210, and the corresponding PRB of PBCH205) may be used (e.g., by puncturing) to provide NR support for dedicated spectra below 5 MHz. In exemplary implementations, asymmetric puncturing may be used so that different numbers of PRBs (e.g., one and four, two and three, three and two, and four and one PRB) are punctured on either side of SSS215 and PSS210 (e.g., 15 PRBs are used for puncturing).

[0030] After detecting the PSS and SSS, the UE can determine the slot timing and symbol timing within a 5ms half-frame, in addition to the physical cell ID. The UE can then determine the resource elements of the PBCH DMRS and data in order to receive the PBCH payload. The PBCH carries a Master Information Block (MIB) that signals system information related to frequency position (SSB frequency domain allocation related to the common resource block (CRB) grid) and timing (half-frame timing and frame timing). This information is included in the upper-layer payload (i.e., the MIB) as part of the physical layer bits within the transport block payload, or it is included in the DMRS.

[0031] After the UE detects the PSS and SSS and demodulates the PBCH, the UE can read the configuration index from the PBCH / MIB. The configuration index can refer to the CORESET (e.g., CORESET#0) configuration table and time and frequency resource allocation parameters. One of the parameters defines the RB offset between the first PRB of the CORESET and the first PRB where the first subcarrier of the SSB subcarrier is located (the SSB is in the same subcarrier raster as the CORESET, but not necessarily in the same RB raster). Different puncture patterns can be applied to the SSB (described below with respect to Figure 3). For example, different puncture patterns can depend on the RF channel and / or synchronization raster point.

[0032] The problem is that, due to the puncture pattern, there may be available partial CCEs at both ends of CORESET#0. Channel estimation may be negatively affected by partial CCEs due to the possibility of low noise averaging. PDCCH may be applied to only one DMRS port. In some implementations, transmit diversity may be provided using precoder cycling (performed, e.g., by a gNB). For example, with precoder cycling, the gNB can change the phase of the Tx antenna (relative to each other) along with the granularity of the CCEs. Thus, PDCCH channel estimation may be performed separately for each CCE. In other words, there may be no phase continuity between CCEs, and therefore the channels may be uncorrelated between CCEs. In addition, the UE may filter (or average) the channel estimates within a single CCE. This may lead to a decrease in the performance of PDCCH detection and decoding. Thus, some performance degradation may occur (compared to the case without punctures). As a solution, the exemplary implementation proposes a signaling mechanism for assigning CORESET#0 and the corresponding UE behavior so that partial CCE associated with different puncture patterns is avoided.

[0033] In an exemplary implementation, the UE can demodulate and decode a PBCH (e.g., PBCH205) by assuming 12 PRBs. This could mean that the UE assumes only 12 complete PRBs that overlap with the PSS in the frequency domain, and that the SSS is valid for demodulating and decoding the PBCH, while the existence of other PRBs is unknown and therefore not assumed. A predefined synchronization raster point or a specific RF channel may be used to trigger a new offset and CORESET assignment determination operation by the UE. Figures 2A–2D may be used to illustrate an exemplary implementation for determining the CORESET (e.g., CORESET#0) frequency position in the SSB subcarrier so that partial CCE associated with different puncture patterns is avoided. This technique may be triggered based on a radio frequency (RF) channel and / or a predefined synchronization raster point.

[0034] Figure 2B is a block diagram showing resource block offsets in a punctured synchronous signal block according to an embodiment example. As shown in Figure 2B, the SSB subcarrier includes punctured PRBs 220, 225 on both sides of PSS 210 and SSS 215. The punctured PRBs 220, 225 include puncturing PBCH 205. The SSB includes a resource block (RB) offset 235 which can be the difference between the lower end of PSS 210 / SSS 215 and the lower end of CORESET 230 (e.g., CORESET #0). The RB offset can be derived from the signal-transmitted offset and PBCH parameters (e.g., k_SSB) based on Table 1. The endpoint of the effective PRB at frequency can be the right end of SSS 215 and the complete CCE. In other words, the endpoint is 15 PRBs containing two symbols and 14 PRBs containing three symbols. Thus, a partial CCE at the end of CORESET can be avoided. The RB offset of 245 can also exist between the lower end of the CORESET 230 and the lower end of the PRB where the first unused subcarrier of the PSS / SSS is located. In other words, the frequency domain offset between the first subcarrier of the CORESET 230 and the first used subcarrier of the SSS 215 can be the RB offset of 245 + the SC offset + eight unused subcarriers.

[0035] [Table 1]

[0036] Figure 2C is a block diagram showing resource block offsets in a punctured synchronization signal block according to an embodiment example. As shown in Figure 2C, the SSB subcarrier includes punctured PRB220, 225 on both sides of PSS210 and SSS215. The punctured PRB220, 225 includes puncturing PBCH205. The SSB subcarrier is created by using existing offsets and PBCH parameters (e.g., k_SSB), Assumption This includes an RB offset of 240, which can be the difference between the lower end of the uncropped SSB subcarrier and the lower end of the CORESET. The RB offset can be derived from the signal-transmitted offset and PBCH parameters (e.g., k_SSB) based on Table 2. The endpoint of the effective PRB at frequency can be the right end of SSS215 and the complete CCE. In other words, the endpoint is the CORESET size of 15 PRBs containing 2 symbols and 14 PRBs containing 3 symbols, in terms of the number of symbols in the time domain. Thus, partial CCEs can be avoided.

[0037] [Table 2]

[0038] Figure 2D is a block diagram showing resource block offsets in a punctured synchronous signal block according to an embodiment example. As shown in Figure 2D, the SSB subcarrier includes punctured PRBs 220, 225 on either side of PSS 210 and SSS 215. The punctured PRBs 220, 225 include puncturing PBCH 205. The SSB subcarrier includes an RB offset 250 which can be the difference between the lower end of PSS 210 / SSS 215 and the lower end of CORESET 230 (e.g., CORESET #0). The RB offset can be derived from the index signaled within the PBCH MIB, based on Table 3. The endpoint of the effective PRB at frequency can be the right end of SSS 215 and the complete CCE. In other words, the endpoint is the CORESET size of 15 PRBs containing 2 symbols and 14 PRBs containing 3 symbols in the time domain symbols. Thus, partial CCEs can be avoided.

[0039] [Table 3]

[0040] The advantages of the techniques described with respect to Figures 2A-2D include, at a minimum, an efficient process for configuring a CORESET (e.g., CORESET#0) when the SSB subcarrier needs to be punctured while avoiding partial CCE. This can improve the receiving performance of Type0-PDCCH. The simple implementation of the UE, by providing a new interpretation of the signal-transmitted offset and PBCH parameters, allows for the assignment of a CORESET including full CCE while supporting flexible frequency positioning of the CORESET (e.g., CORESET#0) with respect to PSS / SSS and punctured PBCH.

[0041] A 3MHz allocation in an NR system can include the channel bandwidth of up to 15 PRBs (assuming, for example, a 90% spectral utilization rate). Therefore, five PRB punctures may be required for SSB. According to an exemplary implementation, the PSS / SSS should remain unaffected, and the punctures should only be applied to the PBCH portion of the SSB. Therefore, up to four PRB punctures may be used on both sides. In other words, applicable puncture patterns can be 1+4, 2+3, 3+2, 4+1 (e.g., the low-frequency and high-frequency sides of the PSS / SSS), as shown in Figure 3.

[0042] Figure 3 is a block diagram showing a puncture pattern for an SSB according to an embodiment in which 15 PRBs are available. As shown in Figure 3, the SSB may contain 20 PRBs. In the first SSB puncture pattern 305, five PRBs 330, 335 are punctured. In the first SSB puncture pattern 305, PRB 325 may be a transmitted PRB (e.g., a PRB containing PSS, SSS, and / or PBCH). On both sides of the transmitted PRB 325 are punctured PRBs 330, 335. In the first SSB puncture pattern 305, the pattern may include four punctured PRBs 330 on the first side of the transmitted PRB 325 and one punctured PRB 335 on the second side of the transmitted PRB 325, leaving 15 PRBs unaffected and actually available.

[0043] In the second SSB puncture pattern 310, five PRBs 330, 335 are punctured. In the second SSB puncture pattern 310, PRB 325 can be a transmitted PRB (e.g., a PRB containing PSS, SSS, and / or PBCH). On both sides of the transmitted PRB 325 are the punctured PRBs 330, 335. In the second SSB puncture pattern 310, the pattern can include three punctured PRBs 330 on the first side of the transmitted PRB 325 and two punctured PRBs 335 on the second side of the transmitted PRB 325, leaving 15 PRBs unaffected and actually available.

[0044] In the third SSB puncture pattern 315, five PRBs 330, 335 are punctured. In the third SSB puncture pattern 315, PRB 325 can be a transmitted PRB (e.g., a PRB containing PSS, SSS, and / or PBCH). On both sides of the transmitted PRB 325 are the punctured PRBs 330, 335. In the third SSB puncture pattern 315, the pattern can include two punctured PRBs 330 on the first side of the transmitted PRB 325 and three punctured PRBs 335 on the second side of the transmitted PRB 325, leaving 15 PRBs unaffected and actually available.

[0045] In the fourth SSB puncture pattern 320, five PRBs 330, 335 are punctured. In the fourth SSB puncture pattern 320, PRB 325 can be a transmitted PRB (e.g., a PRB containing PSS, SSS, and / or PBCH). On either side of the transmitted PRB 325 are the punctured PRBs 330, 335. In the fourth SSB puncture pattern 320, the pattern can include one punctured PRB 330 on the first side of the transmitted PRB 325 and four punctured PRBs 335 on the second side of the transmitted PRB 325, leaving 15 PRBs unaffected and effectively available. Using the above techniques for determining the RB offset and CORESET frequency position, any of the SSB puncture patterns 305, 310, 315, and 320 can be used, and partial CCE can be avoided.

[0046] Figure 4 is a block diagram of a method for determining an initial bandwidth portion according to an exemplary embodiment. As shown in Figure 4, in step S405, the PSS and / or SSS are detected on a synchronization raster point or RF channel. For example, the synchronization raster may indicate the frequency position of a synchronization block that can be used by the UE for system acquisition. The synchronization raster may be defined for each band, which is a subset of the SSB frequencies. The synchronization raster may define a mapping of the SSB with nPRB=10. The RF channel may be based on the numerology and / or bandwidth of the SSB. In exemplary embodiments, the techniques described herein may be triggered based on a synchronization raster point or RF channel. The PSS (e.g., PSS210) and / or SSS (e.g., SSS215) can be detected and / or read on the SSB associated with the synchronization raster point or RF channel.

[0047] In step S410, the 12 central PRBs of the PBCH are determined based on the PSS and / or SSS. For example, the 12 central PRBs of a PBCH (e.g., PBCH205) may be centered at the frequencies of the PSS and / or SSS. However, the PSS and / or SSS can be associated with 127 subcarriers (or 10 PRBs), and the 12 PRBs of the PBCH SSS can be associated with 144 subcarriers. Therefore, the PRBs of a PBCH matching the PSS and / or SSS can be extended by one PRB in each direction to include the 12 central PRBs of the PBCH.

[0048] In step S415, the PBCH is demodulated and decoded. For example, the demodulation can be quadrature amplitude modulation (QAM) demodulation. QAM demodulation reconstructs the bitstream from each subcarrier, and this bitstream is then multiplexed (MUX) to recreate the original single data stream. Decoding the PBCH may include decoding the recreated data stream. In an exemplary implementation, decoding the PBCH may include identifying and reading the Master Information Block (MIB).

[0049] In step S420, the offset and PBCH parameter (e.g., k_SSB) are read from the MIB in the PBCH. For example, the offset may be contained in a field in the MIB. This field may be the ssb-SubcarrierOffset field. The offset can be an integer (e.g., 0, ..., 15). The PBCH parameter may be k_SSB. k_SSB may be used to set the subcarrier offset between the first subcarrier of the SS / PBCH and the last subcarrier of the RB offset (15kHz|60kHz). k_SSB can be an integer (e.g., 0, ..., 23).

[0050] In step S425, it is determined from the signaled offset and PBCH parameters whether the offset lies between the lower end of the SSS and the lower end of the CORESET. For example, referring to Figures 2B and 2D, it is determined whether the offset can be offset 235.

[0051] In step S430, the symbol count of the CORESET is read from the MIB. For example, a field in the MIB may indicate the symbol count of the CORESET (e.g., CORESET#0). This field may be pdcch-ConfigSIB1, which can be an integer (e.g., 0, ..., 255). pdcch-ConfigSIB1 may be used as an index to rows in a predefined table to determine the bandwidth, CORESET, and / or common search space of the PDCCH / SIB, as well as the required PDCCH parameters.

[0052] In step S435, the first five valid CCEs for the CORESET are determined, or in step S440, the first seven valid CCEs for the CORESET are determined. For example, if the CORESET is indicated to be two symbols, step S435 is performed and the first five valid CCEs for the CORESET are determined. If the CORESET is indicated to be three symbols, step S440 is performed and the first seven valid CCEs for the CORESET are determined. CCEs are described in more detail above.

[0053] In step S445, the initial bandwidth portion (BWP) is determined as 15 PRBs starting from the lower end of the CORESET. The BWP can be a contiguous set of physical resource blocks selected from a set of common resource blocks of a particular numerology (μ) on a particular carrier. The initial BWP can be used by the UE for initial cell selection. The initial BWP may include parameters such as RMSI (Remaining Minimum System Information), CORESET, and RMSI frequency position / bandwidth / SCS.

[0054] (Example 1) Figure 5 is a block diagram of a method for determining the control resource set (CORESET) frequency position from a punctured synchronous signal block by user equipment, according to an example embodiment. As shown in Figure 5, in step S505, a resource block (RB) offset assignment determination is triggered. In step S510, at least one of the primary synchronous signal (PSS) and secondary synchronous signal (SSS) is detected within the received synchronous signal (SS) block (SSB). In step S515, the physical broadcast channel (PBCH) parameters and the signaled offset are read from the PBCH master information block (MIB) of the SSB. In step S520, the RB offset is determined based on the PBCH parameters and the signaled offset. In step S525, the control resource set (CORESET) frequency position is determined based on the RB offset.

[0055] (Example 2) The method of Example 1, in which the PBCH parameter can be the subcarrier offset (k_SSB).

[0056] (Example 3) The method of Embodiment 1, in which the trigger for determining the RB offset can be based on a predefined synchronized raster point.

[0057] (Example 4) The method of Embodiment 1, wherein the trigger for determining the RB offset can be based on the radio frequency (RF) channel.

[0058] (Example 5) The method of Example 1, in which the RB offset can be the difference between the lower end of either the PSS or SSS and the lower end of the CORESET.

[0059] (Example 6) The method of Example 1, in which the RB offset can be the difference between the lower end of the SSB and the lower end of the CORESET.

[0060] (Example 7) The method of Example 1, in which the PBCH parameter can be k_SSB and the RB offset can be determined using a table containing k_SSB and the signal-transmitted offset.

[0061] (Example 8) The method of Example 1, in which the RB offset can be determined using a table containing indices that are signaled within the MIB.

[0062] (Example 9) The method of Embodiment 1, wherein the SSB can contain at least one punctured physical resource block (PRB).

[0063] (Example 10) The method of Example 1, wherein the SSB may include five punctured PRBs, and at least one PRB is punctured on both sides of the PBCH.

[0064] (Example 11) The method of Embodiment 1, wherein the SSB can be a punctured SSB, and the determined CORESET frequency position can be aligned in frequency to at least one of the following: the lower end of the CORESET can be aligned with the lower end of the punctured SSB, the CCE boundary of the CORESET can be aligned with the lower end of the punctured SSB, or the CCE boundary of the CORESET can be aligned with the upper end of the punctured SSB.

[0065] (Example 12) The method of Example 1 may further include monitoring Type0_PDCCH from the determined CORESET by the UE.

[0066] (Example 13) The method of Example 1, which may further include the UE receiving a PDSCH based on the detected PDCCH in response to the detection of a PDCCH in SIB1.

[0067] (Example 14) Figure 6 is a block diagram of a method for transmitting a punctured synchronization signal block by a network device, according to an embodiment. As shown in Figure 6, in step S605, the control resource set (CORESET) frequency position is determined based on the physical resource block (PRB) puncture pattern. In step S610, the resource block (RB) offset is determined based on the CORESET position. In step S615, the RB offset in the Master Information Block (MIB) of the PBCH of the synchronization signal (SS) block (SSB) is configured to show. 、 The physical broadcast channel (PBCH) parameters and the signal-transmitted offset are transmitted. In step S620, SSB is transmitted.

[0068] (Example 15) The method of Example 14, in which the PBCH parameter can be the subcarrier offset (k_SSB).

[0069] (Example 16) The method of Embodiment 14, in which the RB offset can be the difference between the lower end of one of the primary sync signals (PSS) or secondary sync signals (SSS) and the lower end of CORESET.

[0070] (Example 17) The method of Example 14, in which the RB offset can be the difference between the lower end of the SSB and the lower end of the CORESET.

[0071] (Example 18) The method of Example 14, in which the PBCH parameter can be k_SSB and the RB offset can be determined using a table containing k_SSB and the signal-transmitted offset.

[0072] (Example 19) The method of Example 14, in which the RB offset may be determined using a table containing indices that are signaled within the MIB.

[0073] (Example 20) The method of Example 14, wherein the SSB can contain at least one punctured physical resource block (PRB).

[0074] (Example 21) The method of Example 14, wherein the SSB may contain five punctured PRBs, and at least one PRB is punctured on both sides of the PBCH.

[0075] (Example 22) The method of Embodiment 14, wherein the determined CORESET frequency position can be aligned at frequency to at least one of the following: the lower end of the CORESET can be aligned with the lower end of the punctured SSB; the CCE boundary of the CORESET can be aligned with the lower end of the punctured SSB; or the CCE boundary of the CORESET can be aligned with the upper end of the punctured SSB.

[0076] (Example 23) A non-transient computer-readable storage medium containing stored instructions, configured such that when these instructions are executed by at least one processor, it causes a computing system to execute any of the methods of Examples 1 to 22.

[0077] (Example 24) An apparatus comprising means for carrying out any of the methods of Examples 1 to 22.

[0078] (Example 25) An apparatus comprising at least one processor and at least one memory containing computer program code, wherein the at least one memory and the computer program code are configured together with the at least one processor to cause the apparatus to perform at least one of the methods of Examples 1 to 22.

[0079] Figure 7 is a block diagram of a radio station 700 or wireless node or network node 700 according to an embodiment. The wireless node or radio station or network node 700 may include, according to an embodiment, one or more of the following: AP, BS, gNB, RAN node, relay node, UE or user device, network node, network entity, DU, CU-CP, CU-UP, ... or other nodes.

[0080] The radio station 700 may include, for example, one or more (for example, two as shown in Figure 7) radio frequency (RF) or wireless transceivers 702A, 702B, each wireless transceiver including a transmitter for transmitting signals and a receiver for receiving signals. The radio station also includes a processor or control unit / entity (controller) 704 for executing instructions or software and controlling the transmission and reception of signals, and memory 706 for storing data and / or instructions.

[0081] The processor 704 may perform judgments or decisions, generate frames, packets, or messages for transmission, decode received frames or messages for further processing, and perform other tasks or functions described herein. The processor 704, which may be a baseband processor, may generate, for example, messages, packets, frames, or other signals for transmission over the wireless transceiver 702 (702A or 702B). The processor 704 may control the transmission of signals or messages over the wireless network and may control the reception of signals or messages over the wireless network (for example, after being down-converted by the wireless transceiver 702). The processor 704 may be programmable and may execute software or other instructions stored in memory or other computer media to perform the various tasks and functions described above, such as one or more of the tasks or methods described above. The processor 704 may be, for example, hardware, a programmable processor that runs programmable logic, software, or firmware, and / or any combination thereof (or may include these). In other terms, the processor 704 and the transceiver 702 may be considered together, for example, as a wireless transmitter / receiver system.

[0082] In addition, referring to Figure 7, the controller (or processor) 708 may execute software and instructions, perform overall control of the radio station 700, perform control of other systems not shown in Figure 7, such as controlling input / output devices (e.g., displays, keypads), and / or execute software for one or more applications that may be provided on the radio station 700, such as email programs, voice / video applications, word processors, voice-over-IP applications, or other applications or software.

[0083] In addition, a storage medium containing stored instructions may be provided, which, when executed by a controller or processor, may cause processor 704 or other controller or processor to perform one or more of the aforementioned functions or tasks.

[0084] In another embodiment, the RF or wireless transceiver 702A / 702B may receive and / or transmit signals or data. The processor 704 (and optionally the transceiver 702A / 702B) may control the RF or wireless transceiver 702A or 702B to receive, transmit, or broadcast signals or data.

[0085] However, the examples of embodiments are not limited to the systems given as examples, and those skilled in the art may apply the solutions to other communication systems. Another example of a suitable communication system is the 5G system. The network architecture in 5G is considered to be quite similar to the LTE-Advanced network architecture. 5G is likely to use multiple input-multiple output (MIMO) antennas, more base stations or nodes than LTE (the so-called small cell concept), include macrosites that work in cooperation with smaller base stations, and probably also employ various radio technologies for better coverage and improved data rates.

[0086] It should be understood that future networks are likely to utilize network functions virtualization (NFV), a network architecture concept that proposes virtualizing the functions of network nodes into “underlying elements” or entities that can be connected or linked together in an operable manner to provide services. A virtualized network function (VNF) may include one or more virtual machines that run computer program code using standard or common types of servers instead of customized hardware. Cloud computing or data storage may be utilized. In wireless communication, this may mean that the operation of a node can be performed at least partially on a server, host, or node coupled in an operable manner to a remote radio head. The operation of a node can also be distributed across multiple servers, nodes, or hosts. It should also be understood that the distribution of work between the core network operation and the base station operation may differ from, or even be unnecessary, the distribution of work in LTE.

[0087] The various embodiments of the technologies described herein may be implemented in digital electronic circuits, or in computer hardware, firmware, software, or a combination thereof. The embodiments may be implemented as computer program products, i.e., as computer programs tangibly embodied in an information medium (e.g., a machine-readable storage device) or in propagating signals, for execution by a data processing device (e.g., a programmable processor, one computer, or multiple computers) or for controlling the operation of a data processing device. Embodiments may be provided on a computer-readable medium or computer-readable storage medium, which may be a non-transient medium. The various embodiments of the technologies may include embodiments provided via transient signals or media, and / or embodiments of programs and / or software that are downloadable via the Internet or other networks (either wired or / or wireless networks). In addition, embodiments may be provided via machine-type communications (MTC) and / or via the Internet of Things (IoT).

[0088] A computer program may be in the form of source code, object code, or some intermediate form, and may be stored in some kind of carrier, distribution medium, or computer-readable medium, which may be any entity or device capable of carrying the program. Such carriers include, for example, recording media, computer memory, read-only memory, optoelectronic and / or electrical carrier signals, telecommunication signals, and software distribution packages. Depending on the processing power required, a computer program may be executed on a single electronic digital computer or distributed across multiple computers.

[0089] Furthermore, the various embodiments of the technologies described herein may utilize cyber-physical systems (CPS) (systems of collaboratively working computational elements that control physical entities). CPS can enable embodiments and uses of a vast number of interconnected ICT devices (sensors, actuators, processors, microcontrollers, etc.) embedded in objects at various locations. Mobile cyber-physical systems, in which the physical system has unique mobility, are a subcategory of cyber-physical systems. Examples of mobile-physical systems include mobile robotics and electronic devices carried by humans or animals. The rising popularity of smartphones has increased interest in the field of mobile cyber-physical systems. Therefore, various embodiments of the technologies described herein may be provided through one or more of these technologies.

[0090] Computer programs, such as the aforementioned computer programs, can be written in any form of programming language, including compiled or interpreted languages, and can be deployed in any form, including as standalone programs suitable for use in a computing environment, or as modules, components, subroutines, or as part of other units. Computer programs can be deployed to run on one or more computers located at one site or distributed across multiple sites and interconnected by a communication network.

[0091] The steps of the method may be performed by one or more programmable processors running a computer program or a part of a computer program in order to perform a function by acting on input data and generating an output. For example, the steps of the method may be performed by a dedicated logic circuit such as an FPGA (field programmable gate array) or an ASIC (application-specific integrated circuit), and the device may be implemented as such a dedicated logic circuit.

[0092] Examples of processors suitable for executing computer programs include both general-purpose and dedicated microprocessors, as well as one or more processors in any type of digital computer, chip, or chipset. Typically, a processor receives instructions and data from read-only memory, random-access memory, or both. Computer elements may include at least one processor for executing instructions and one or more memory devices for storing instructions and data. Typically, a computer may include one or more mass storage devices (e.g., magnetic disks, magneto-optical disks, or optical disks) for storing data, or be operably coupled to or to such mass storage devices for receiving or transferring data, or both. Suitable information media for embodying computer program instructions and data include, for example, semiconductor memory devices (e.g., EPROM, EEPROM, and flash memory devices), magnetic disks (e.g., internal hard disks or removable disks), magneto-optical disks, and all forms of non-volatile memory, such as CD-ROMs and DVD-ROMs. Processors and memory may be complemented by or incorporated into dedicated logic circuits.

[0093] To provide user interaction, embodiments may be implemented on a computer that includes a display device for displaying information to the user, such as a cathode ray tube (CRT) or liquid crystal display (LCD) monitor, and a user interface such as a keyboard and pointing device (e.g., mouse or trackball) that the user can use to provide input to the computer. Other types of devices may also be used to provide user interaction. For example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback), and input from the user may be received in any form, including acoustic input, voice input, or tactile input.

[0094] Examples of embodiments may be implemented in a computing system that includes, for example, a backend component as a data server, or a middleware component as an application server, or a frontend component (e.g., a client computer including a graphical user interface or a web browser that a user can use to interact with the embodiment), or in any combination of such backend components, middleware components, or frontend components. The components may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include local area networks (LANs) and wide area networks (WANs) (e.g., the Internet).

[0095] While specific features of the embodiments described herein have been illustrated, those skilled in the art will likely come up with numerous modifications, alternatives, alterations, and equivalents. It should therefore be understood that the appended claims are intended to cover all such modifications and alterations, as they are contained within the true spirit of the various embodiments.

Claims

1. The user equipment (UE) detects the primary sync signal (PSS) and secondary sync signal (SSS) within the sync signal block (SSB), The UE reads the signal-transmitted index from the master information block of the physical broadcast channel (PBCH) of the SSB, which is punctured in the frequency domain, The UE determines, based on the signaled index, a resource block (RB) offset between the lower end of one of the PSS or SSS and the lower end of the control resource set (CORESET), A method comprising determining the lower end of the CORESET based on the RB offset by the UE.

2. The method according to claim 1, wherein the endpoint of the CORESET lies in 15 physical resource blocks from the lower end of the CORESET, and the CORESET includes 2 symbols in the time domain.

3. The method according to claim 1, wherein the lower end of the PSS corresponds to a physical resource block in which the first unused subcarrier of the PSS is located.

4. The method according to claim 1, wherein the lower end of the SSS corresponds to a physical resource block in which the first unused subcarrier of the SSS is located.

5. The method according to claim 1, comprising triggering the determination of the RB offset by the UE.

6. The method according to claim 5, wherein the trigger for determining the RB offset is based on a predefined synchronized raster point.

7. The method according to claim 1, wherein the RB offset is determined using a table containing the signal-transmitted index.

8. The aforementioned SSB is punctured in the frequency domain, The method according to claim 1, wherein the lower end of the CORESET is aligned with the lower end of the SSB after puncture in terms of frequency.

9. The method according to any one of claims 1 to 8, further comprising monitoring Type0_PDCCH from the determined lower end of CORESET by the UE.

10. To detect the system information block 1 (SIB1) in the monitored Type0_PDCCH, The method according to claim 9, further comprising the UE receiving a physical downlink shared channel based on the detected SIB1 in response to the detection of the SIB1.

11. The network device determines the lower limit of the control resource set (CORESET) based on the physical resource block puncture pattern, The network device determines a resource block (RB) offset between the lower end of one of the primary synchronization signals (PSS) or secondary synchronization signals (SSS) and the lower end of the CORESET based on the determined lower end of the CORESET, The network device transmits an index configured to indicate the RB offset in the master information block of a physical broadcast channel (PBCH) that is punctured in the frequency domain. A method comprising communicating a synchronous signal block (SSB) including the PSS, the SSS, and the punctured PBCH using the network device.

12. The method according to claim 11, wherein the endpoint of the CORESET is located in 15 physical resource blocks from the lower end of the CORESET, and the CORESET includes two symbols in the time domain.

13. The method according to claim 11, wherein the lower end of the PSS corresponds to a physical resource block in which the first unused subcarrier of the PSS is located.

14. The method according to claim 11, wherein the lower end of the SSS corresponds to a physical resource block in which the first unused subcarrier of the SSS is located.

15. The method according to claim 11, wherein the index is determined using a table that includes the RB offset.

16. The aforementioned SSB is punctured in the frequency domain, The method according to any one of claims 11 to 15, wherein the lower end of the CORESET is aligned with the lower end of the SSB after puncture in terms of frequency.

17. Means for detecting the primary sync signal (PSS) and secondary sync signal (SSS) within a sync signal block (SSB), A means for reading the signal-transmitted index from the master information block of the frequency-domain punctured physical broadcast channel (PBCH) of the aforementioned SSB, Means for determining a resource block (RB) offset between the lower end of one of the PSS or SSS and the lower end of a control resource set (CORESET) based on the signal-transmitted index, A user device comprising means for determining the lower end of the CORESET based on the RB offset.

18. The user device according to claim 17, wherein the endpoint of the CORESET lies in 15 physical resource blocks from the lower end of the CORESET, and the CORESET includes two symbols in the time domain.

19. The user device according to claim 17, wherein the lower end of the PSS corresponds to a physical resource block in which the first unused subcarrier of the PSS is located.

20. The user device according to claim 17, wherein the lower end of the SSS corresponds to a physical resource block in which the first unused subcarrier of the SSS is located.

21. The user device according to claim 17, wherein the user device includes means for triggering the determination of the RB offset.

22. The user device according to claim 21, wherein the means for triggering is configured to trigger the determination of the RB offset based on a predefined synchronous raster point.

23. The user device according to claim 17, wherein the means for determining the RB offset is configured to determine the RB offset using a table containing the signal-transmitted index.

24. The aforementioned SSB is punctured in the frequency domain, The user device according to claim 17, wherein the lower end of the CORESET is aligned with the lower end of the SSB after puncture in terms of frequency.

25. The user device according to any one of claims 17 to 24, further comprising means for monitoring Type0_PDCCH from the determined lower end of CORESET.

26. Means for detecting the system information block 1 (SIB1) in the monitored Type0_PDCCH, The user device according to claim 25, further comprising means for receiving a physical downlink shared channel based on the detected SIB1 in response to the means for detection detecting the SIB1.

27. Means for determining the lower end of a control resource set (CORESET) based on the physical resource block puncture pattern, Means for determining a resource block (RB) offset between the lower end of one of the primary synchronization signals (PSS) or secondary synchronization signals (SSS) and the lower end of the CORESET based on the determined lower end of the CORESET, Means for transmitting an index configured to indicate the RB offset in the master information block of a physical broadcast channel (PBCH) that is punctured in the frequency domain, A network device comprising means for communicating the PSS, the SSS, and a synchronous signal block (SSB) including the punctured PBCH.

28. The network device according to claim 27, wherein the endpoint of the CORESET lies in 15 physical resource blocks from the lower end of the CORESET, and the CORESET includes 2 symbols in the time domain.

29. The network device according to claim 27, wherein the lower end of the PSS corresponds to a physical resource block where the first unused subcarrier of the PSS is located.

30. The network device according to claim 27, wherein the lower end of the SSS corresponds to a physical resource block where the first unused subcarrier of the SSS is located.

31. The network device according to claim 27, further comprising means for determining the index using a table that includes the RB offset.

32. The aforementioned SSB is punctured in the frequency domain, The network device according to any one of claims 27 to 31, wherein the lower end of the CORESET is aligned with the lower end of the SSB after puncture in terms of frequency.

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