Signal receiving method, device and system

Abstract

An embodiment of the present invention provides a signal receiving method, an apparatus and a system, the signal receiving apparatus being applied to a terminal device, and including: a first receiving unit for receiving a non-cell defined synchronization signal and configuration information of a physical broadcast channel block (NCD-SSB) of a serving cell transmitted by a network device; and a second receiving unit for receiving the NCD-SSB of the serving cell transmitted by the network device.

Description

[Technical Field]

[0001] The present invention relates to the field of communications technology. [Background technology]

[0002] Realizing the Industrial Internet of Things is one of the key goals of fifth-generation mobile communications technology (5G). In large-scale industrial wireless sensor network (IWSN) application scenarios, in addition to the need for high-end terminal devices such as ultra-reliable and low-latency communication (URLLC), mid- to low-end terminal devices, including temperature and humidity sensors, pressure sensors, accelerators, and motion sensors, are often required. In another 5G vertical industry application scenario, smart cities, widespread deployment of video surveillance cameras is an important application, but does not require high-end terminal devices. Furthermore, various wearable devices, such as smart watches, smart wristbands, and wearable medical monitoring devices, also have low processing power requirements for terminal devices.

[0003] The performance of these devices, which require a wide range of applications, is lower than that of Rel-15 / Rel-16 terminal devices, but higher than that of low-power wide-area (LPWA) devices (e.g., NB-IoT and LTE-M). The basic characteristics of these devices are lower complexity, more compact structure, smaller device size, and longer battery life (more than one year) compared to URLLC and enhanced mobile broadband (eMBB) devices. However, existing Rel-15 / 16 5G systems cannot adequately support such low-capability terminal devices, and 5G terminal devices are generally expensive.

[0004] To support mid- to low-end new radio (NR) devices and reduce the cost of 5G terminal equipment, the 3rd Generation Partnership Project (3GPP) launched a research project on reduced capability (RedCap) terminal equipment (hereinafter referred to as UE) in Rel-17. The purpose of this research is to clarify the characteristics and capability parameters of reduced capability NR devices compared to Rel-16 eMBB and URLLC NR devices, and to improve the power saving performance, battery life, and duration of reduced capability NR devices. The reduced complexity and processing capability of reduced capability NR devices are mainly achieved by reducing the number of device transmit and receive antennas, narrower transmission bandwidth, support for only half-duplex FDD, longer data processing time, and reduced modulation and demodulation capabilities. Reduced capability UEs are required to report their capabilities to the network. This allows the network to apply appropriate transmission modes or more effective power saving mechanisms to reduced capability UEs based on their capabilities.

[0005] In Rel17, a RedCap UE can support a bandwidth much smaller than the system bandwidth and the normal terminal bandwidth. For frequency range 1 (FR1), the maximum bandwidth that can be supported by a RedCap UE is 20 MHz, and for FR2, the maximum bandwidth that can be supported by a RedCap UE is 100 MHz. Because the bandwidth of a RedCap UE is smaller than that of a normal UE, an initial BWP for the RedCap UE is introduced to configure a bandwidth part (BWP) appropriate for the RedCap UE, and its bandwidth is smaller than the maximum bandwidth supported by the RedCap UE. The initial BWP for the RedCap UE can be dedicated to the RedCap UE's control channel, data channel, various reference signals, and random access procedure.

[0006] The above description of the background art is merely for the purpose of explaining the configuration of the present invention more clearly and completely, and is provided for the understanding of those skilled in the art. These configurations described in the background art of the present invention should not be construed as being well known to those skilled in the art. Summary of the Invention [Problem to be solved by the invention]

[0007] In the conventional method, the initial downlink BWP for a normal UE must include a cell-defined synchronization signal / physical broadcast channel block (CD-SSB) and control resource set 0 (CORESET#0). An idle UE can camp on the initial downlink BWP to receive system broadcasts, listen to paging, and perform initial random access and mobility measurements. A connected UE can perform random access opportunity selection, radio resource management (RRM) measurements, radio link measurements (RLM), and beam failure detection and recovery based on the beam of the CD-SSB.

[0008] If the initial downlink BWP for a RedCap UE includes CD-SSB and CORSET#0, the resources used by the RedCap UE and the normal UE will be concentrated in the same frequency range, which will be detrimental to system load balancing. To fully utilize all frequency domain resources to realize flexible resource allocation, the initial downlink BWP for a RedCap UE may not include CD-SSB and CORSET#0, and an idle RedCap UE may listen to paging in the initial downlink BWP dedicated to RedCap or transmit data in a connected state. In addition, the dedicated downlink BWP for a normal UE does not necessarily need to include CD-SSB and CORESET#0.

[0009] According to the inventors' findings, in the conventional method, a connected UE currently performs measurements using the CD-SSB of the detected primary cell PCell. Even if the initial downlink BWP dedicated to RedCap does not include CD-SSB, the RedCap UE still needs to perform random access opportunity selection, RRM measurements, radio link measurements (RLM), beam failure detection, and recovery based on CD-SSB. Therefore, every time a random access opportunity selection, RRM measurements, radio link measurements (RLM), or beam failure detection is performed, the RedCap UE needs to return to CD-SSB from its initial downlink BWP, which is detrimental to the transmission efficiency and power saving of the RedCap UE. Furthermore, if the activated dedicated downlink BWP of a normal UE does not include CD-SSB, every time a random access opportunity selection, RRM measurements, radio link measurements (RLM), or beam failure detection is performed, the RedCap UE needs to return to CD-SSB from the dedicated downlink BWP, which is detrimental to the UE's performance and power saving.

[0010] Furthermore, according to the discovery of the inventors of the present invention, a UE currently in an idle or inactive state performs cell reselection measurements based on the CD-SSB of the cell on which it is camped. Figure 2 is a schematic diagram of the initial downlink BWP of a normal UE and a RedCap UE. If a RedCap UE in an idle or inactive state camps on a RedCap-dedicated initial downlink BWP and listens to paging, as shown in Figure 2, the RedCap UE needs to jump from the initial downlink BWP of the RedCap UE to the initial downlink BWP of the normal UE to measure the CD-SSB to perform mobility measurements. Therefore, since a RedCap UE in an idle or inactive state frequently switches its radio frequency RF receiver between different center frequencies, the RedCap UE needs to configure a measurement gap, which is very detrimental to the spectrum efficiency and energy saving of the RedCap UE.

[0011] To solve at least one of the above problems or other similar problems, embodiments of the present invention provide a signal reception method, apparatus and system. [Means for solving the problem]

[0012] In one aspect of an embodiment of the present invention, there is provided a signal receiving device applicable to a terminal device, the device including: a first receiving unit that receives a non-cell-defined synchronization signal and configuration information of a physical broadcast channel block (NCD-SSB) of a serving cell transmitted by a network device; and a second receiving unit that receives the NCD-SSB of the serving cell transmitted by the network device.

[0013] In one aspect of an embodiment of the present invention, a signal transmission device is provided that is applied to a network device, and includes a second transmission unit that transmits configuration information of an NCD-SSB of a serving cell to a terminal device, and a third transmission unit that transmits the NCD-SSB of the serving cell to the terminal device.

[0014] One of the advantageous effects of the embodiment of the present invention is as follows: the network device sends the NCD-SSB configuration to the terminal device, so that the terminal device does not need to perform measurements using CD-SSB, but can perform measurements using NCD-SSB, thereby reducing unnecessary switching of the UE between different frequency points and improving transmission efficiency and energy saving.

[0015] As shown in the following description and drawings, specific embodiments of the present invention are disclosed in detail to illustrate ways in which the principles of the present invention can be employed. However, the scope of the present invention is not limited to these embodiments. The present invention encompasses all modifications, alterations, and equivalents within the spirit and scope of the appended claims.

[0016] Features described and / or shown in one embodiment may be used in the same or similar manner in one or more other embodiments, may be combined with features in other embodiments, or may be substituted for features in other embodiments.

[0017] It should be noted that in this text, the term "comprise / have" means the presence of a feature, element, step or component, and does not exclude the presence or addition of one or more other features, elements, steps or components. [Brief explanation of the drawings]

[0018] Elements and features depicted in one drawing and one embodiment of an embodiment of the invention may be combined with elements and features shown in one or more drawings or embodiments, and in the drawings, like reference numerals may designate corresponding elements in multiple drawings and may designate corresponding elements used in more than one embodiment.

[0019] The drawings included are used to further understand the embodiments of the present invention, constitute a part of the specification, are used to illustrate the embodiments of the present invention, and together with the written description, explain the principles of the present invention. Note that the drawings described below are merely some examples of the present invention, and those skilled in the art can easily imagine other drawings based on these drawings. [Figure 1] 1 is a schematic diagram of a communication system according to an embodiment of the present invention; [Figure 2] 1 is a schematic diagram of the initial downlink BWP of a normal UE and a RedCap UE. [Figure 3] 1 is a schematic diagram of an example of a signal receiving method according to an embodiment of the present invention; [Figure 4] 1 is a schematic diagram of the frequency location of NCD-SSB. [Figure 5] 1 is a schematic diagram of the frequency location of NCD-SSB. [Figure 6] 1 is a schematic diagram of the frequency location of NCD-SSB. [Figure 7] 1 is a schematic diagram of the frequency location of NCD-SSB. [Figure 8] 1 is a schematic diagram of an example of a signal transmission method according to an embodiment of the present invention; [Figure 9] 1 is a schematic diagram of an example of a signal receiving device according to an embodiment of the present invention; [Figure 10] 1 is a schematic diagram of an example of a signal transmission device according to an embodiment of the present invention; [Figure 11] 1 is a schematic diagram of a network device according to an embodiment of the present invention; [Figure 12] FIG. 1 is a schematic diagram of a terminal device according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0020] The above and other features of the present invention will become apparent from the following description. In the specification and drawings, specific embodiments of the present invention are disclosed in detail, and some of the embodiments in which the principles of the present invention can be adopted are shown. However, the present invention is not limited to the described embodiments. The present invention includes all modifications, variations, and equivalents within the scope of the appended claims. Below, various embodiments of the present invention will be described with reference to the drawings. These embodiments are merely illustrative and do not limit the present invention.

[0021] In embodiments of the present invention, the terms "first," "second," etc. are used in titles to distinguish between different elements, but do not represent the spatial arrangement or temporal order of these elements, and these elements are not limited to these terms. The term "and / or" includes any and all combinations of one or more of the terms listed in the associated list. The terms "comprise," "include," "have," etc. refer to the presence of listed features, elements, elements, or components, but do not exclude the presence or addition of one or more other features, elements, elements, or components.

[0022] In the embodiments of the present invention, the singular forms "one," "the," etc., include the plural and should be understood broadly as "one kind" or "one class," and are not limited to "one." Furthermore, the term "said" should be understood to include both the singular and the plural, unless the context clearly indicates otherwise. Furthermore, the term "described in" should be understood to mean "described at least in part," and the term "based on" should be understood to mean "based at least in part," unless the context clearly indicates otherwise.

[0023] In embodiments of the present invention, the terms "communication network" or "wireless communication network" may refer to a network conforming to any communication standard, such as, for example, Long Term Evolution (LTE), Long Term Evolution Advanced (LTE-A, LTE-Advanced), Wideband Code Division Multiple Access (WCDMA), High-Speed ​​Packet Access (HSPA), etc.

[0024] Additionally, communications between devices in a communications system may occur according to any stage of communications protocol, including, but not limited to, 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G, and future 5G and 6G communications protocols, and / or other currently known or future developed communications protocols.

[0025] In an embodiment of the present invention, the term "network device" refers to a device in a communication system that allows a terminal device to access the communication system and provides a service to the terminal device, and may include, but is not limited to, a base station (BS), an access point (AP), a transmission reception point (TRP), a broadcast transmitter, a mobility management entity (MME), a gateway, a server, a radio network controller (RNC), a base station controller (BSC), etc.

[0026] Here, the base station may include, but is not limited to, a Node B (NodeB or NB), an evolved Node B (eNodeB or eNB), a 5G base station (gNB), etc., as well as a remote radio head (RRH), a remote radio unit (RRU), a relay, or a low-power node (e.g., femto, pico, etc.). Also, the term "base station" may include some or all of these functions, and each base station may provide communication coverage for a particular geographic area. The term "cell" may refer to a base station and / or its coverage area, depending on the context in which the term is used.

[0027] In the embodiments of the present invention, the term "User Equipment" (UE) or "Terminal Equipment" (TE) refers to a device that accesses a communication network and receives network services via, for example, a network device. The terminal device may be fixed or mobile, and may also be referred to as a mobile station (MS), a terminal, a subscriber station (SS), an access terminal (AT), a station, etc.

[0028] Here, the terminal device may include, but is not limited to, a cellular phone, a personal digital assistant (PDA), a wireless modulation / demodulation device, a wireless communication device, a handheld device, a machine-type communication device, a laptop computer, a cordless phone, a smartphone, a smart watch, a digital camera, etc.

[0029] Also, for example, in a scenario such as the Internet of Things (IoT), the user equipment may be a monitoring or measuring device or apparatus, and may include, but is not limited to, a Machine Type Communication (MTC) terminal, an in-vehicle communication terminal, a Device to Device (D2D) terminal, a Machine to Machine (M2M) terminal, etc.

[0030] Furthermore, the term "network side" or "network device side" refers to the side of a network, which may be a base station or may include one or more of the network devices described above. The term "user side" or "terminal side" or "terminal device side" refers to the side of a user or terminal, which may be a UE or may include one or more of the terminal devices described above. In this specification, unless otherwise specified, "device" may refer to either a network device or a terminal device.

[0031] The following describes an example scenario of the present invention with reference to an example, but the present invention is not limited thereto.

[0032] 1 is a schematic diagram of a communication system according to an embodiment of the present invention, and schematically illustrates examples of user equipment and network equipment. As shown in FIG. 1, a communication system 100 may include a network equipment 101 and a terminal equipment 102. For convenience of explanation, FIG. 1 illustrates an example of one terminal equipment and one network equipment, but the embodiment of the present invention is not limited thereto.

[0033] In an embodiment of the present invention, existing services or future services may be performed between the network device 101 and the terminal device 102. For example, these services may include, but are not limited to, enhanced mobile broadband (eMBB), massive machine type communication (mMTC), ultra-reliable and low-latency communication (URLLC), and related communications for reduced-capability terminal devices.

[0034] The following will be explained with reference to each example.

[0035] Example 1 The embodiment of the present invention provides a signal receiving method, which is explained from the terminal device side.

[0036] 3 is a schematic diagram of an example of a signal receiving method according to an embodiment of the present invention. As shown in FIG. 3, the method includes the following steps:

[0037] Step 301: The terminal device receives the configuration information of the non-cell-defined synchronization signal and physical broadcast channel block (NCD-SSB) of the serving cell sent by the network device.

[0038] Step 302: The terminal device receives the NCD-SSB of the serving cell sent by the network device.

[0039] It should be noted that the above-mentioned FIG. 3 merely illustrates an example of the present invention, and the present invention is not limited thereto. For example, the execution order of various steps may be appropriately adjusted, some other steps may be added, or some steps may be removed. Those skilled in the art can make appropriate modifications based on the above content, and are not limited to the description of the above-mentioned FIG. 3.

[0040] In some embodiments, the terminal device acquires SSBs related to various aspects of UE access to a cell, such as cell search, beam measurement, beam selection, and beam recovery. For example, the terminal device acquires a master information block (MIB), which includes configurations related to system information block 1 (SIB1), including a control resource set 0 (CORESET#0) configuration and a search space 0 (SS#0) configuration. The terminal device determines PDCCH monitoring occasions based on the control resource set 0 and search space 0, monitors the PDCCH at the monitoring occasions, and acquires SIB1 based on physical downlink shared channel (PDSCH) information indicated by the PDCCH. SIB1 includes configuration information for an initial downlink bandwidth portion (initial BWP).

[0041] In some embodiments, CD-SSB refers to an SSB indicating, in the MIB message, the time-frequency resource location of the PDCCH on which SIB1 is scheduled, and NCD-SSB refers to an SSB not including, in the MIB message, an indication of the time-frequency resource location of the PDCCH on which SIB1 is scheduled. The SSB may include a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and / or a Physical Broadcast Channel (PBCH). The network device transmits the NCD-SSB configuration to the terminal device. This allows the terminal device to perform measurements using the NCD-SSB without needing to perform measurements using the CD-SSB, thereby reducing unnecessary UE switching between different frequency points and improving transmission efficiency and energy conservation.

[0042] In some embodiments, the method may further include the following steps:

[0043] Step 303: The terminal device uses the NCD-SSB to measure the serving cell or the beam of the serving cell, the types of which will be described later.

[0044] In some embodiments, the configuration information of the NCD-SSB includes an absolute frequency point of the NCD-SSB. For example, the absolute frequency point may use an Absolute Radio Frequency Channel Number (ARFCN) identifier, and the frequency location of the NCD-SSB (the center frequency location of the NCD-SSB) can be calculated based on the ARFCN.

[0045] In some embodiments, the NCD-SSB configuration information may preferably further include at least one additional information of the period of the NCD-SSB, the subcarrier spacing of the NCD-SSB, the transmission power of the NCD-SSB, the time window configuration of the NCD-SSB (the subframe offset included in the period and the number of consecutively transmitted subframes), or the SSB index actually transmitted in each half-frame by the NCD-SSB.

[0046] In some embodiments, the NCD-SSB and CD-SSB of the same serving cell need to be identical in order for the terminal device to obtain identical results when measuring NCD-SSB and CD-SSB. For example, the periodicity of the NCD-SSB of the serving cell is the same as the periodicity of the CD-SSB of the serving cell, and / or the subcarrier spacing of the NCD-SSB of the serving cell is the same as the subcarrier spacing of the CD-SSB of the serving cell, and / or the transmit power of the NCD-SSB of the serving cell is the same as the transmit power of the CD-SSB of the serving cell, and / or the transmission time window of the NCD-SSB of the serving cell is the same as the transmission time window of the CD-SSB of the serving cell, and / or the SSB index actually transmitted in each half-frame of the NCD-SSB of the serving cell is the same as the SSB index actually transmitted in each half-frame of the CD-SSB of the serving cell, and / or the NCD-SSB beam of the serving cell has a quasi-collocated (QCL) relationship with the CD-SSB beam of the serving cell having the same index. However, the present invention is not limited thereto, and the above information may be configured to other values.

[0047] In some embodiments, the NCD-SSB configuration information may not include at least one of the above additional information, and the above additional information may be determined based on the CD-SSB configuration information of the serving cell.

[0048] In some embodiments, the CD-SSB configuration information includes at least one of the NCD-SSB period, the NCD-SSB subcarrier spacing, the NCD-SSB transmission power, the NCD-SSB time window position, and the SSB index actually transmitted in each half frame by the NCD-SSB. The CD-SSB configuration information may be carried in SIB1 of the system information or may be acquired when the UE detects the CD-SSB. For example, the CD-SSB period and the CD-SSB subcarrier spacing may be acquired when the UE detects the CD-SSB, and the CD-SSB transmission power, the CD-SSB time window position, and the SSB index actually transmitted in each half frame by the NCD-SSB may be carried in SIB1, but embodiments of the present invention are not limited thereto.

[0049] In some embodiments, the terminal device determines the NCD-SSB additional information based on the CD-SSB configuration information of the serving cell. For example, the terminal device may use the CD-SSB configuration information as the additional information corresponding to NCD-SSB, i.e., the CD-SSB configuration information of the same serving cell may be the same as the NCD-SSB additional information. For example, the NCD-SSB period is the same as CD-SSB, the network device does not transmit the NCD-SSB period configuration, and the terminal device sets the CD-SSB period to the NCD-SSB period. Alternatively, the NCD-SSB subcarrier spacing is the same as CD-SSB, the network device does not transmit the NCD-SSB subcarrier spacing configuration, and the terminal device sets the CD-SSB subcarrier spacing to the NCD-SSB subcarrier spacing. Alternatively, the NCD-SSB transmission power is the same as CD-SSB, the network device does not transmit the NCD-SSB transmission power configuration, and the terminal device sets the CD-SSB transmission power to the NCD-SSB transmission power. Alternatively, the transmission time position of NCD-SSB is the same as that of CD-SSB, and the network device does not transmit the time window position configuration of NCD-SSB, and the terminal device sets the time window position of CD-SSB to the time window position of NCD-SSB. Alternatively, the SSB index actually transmitted by NCD-SSB is the same as that of CD-SSB, and the network device does not transmit the SSB index configuration actually transmitted by NCD-SSB, and the terminal device sets the SSB index actually transmitted in each half frame by CD-SSB to the SSB index actually transmitted in each half frame by NCD-SSB. Alternatively, a predetermined relationship between the CD-SSB configuration information and NCD-SSB may be used to determine the additional information corresponding to NCD-SSB. For example, the predetermined relationship may be that the period of CD-SSB is twice the period of NCD-SSB, that the subcarrier spacing of CD-SSB is twice the subcarrier spacing of NCD-SSB, or that the transmission power of CD-SSB is twice the transmission power of NCD-SSB, but the embodiment of the present invention is not limited thereto.

[0050] In some embodiments, the NCD-SSB configuration information may be conveyed by dedicated RRC signaling, by system information, or in a handover command, as described below. (1) The configuration information of NCD-SSB is carried by the RRC reconfiguration message.

[0051] In some embodiments, a UE in a connected state may convey NCD-SSB configuration information through an RRC reconfiguration message. In conventional methods, a terminal device in a connected state performs measurements using the detected CD-SSB, resulting in the above-mentioned technical problems. In embodiments of the present invention, a network device conveys NCD-SSB configuration information through dedicated RRC signaling and notifies a UE in a connected state, thereby supporting a UE in a connected state to perform measurements based on NCD-SSB. A UE in a connected state may include a normal terminal device, a capability-enhanced terminal device (hereinafter abbreviated as a "first type terminal device"), or a capability-reduced terminal device (RedCap UE (hereinafter abbreviated as a "second type terminal device")), but embodiments of the present invention are not limited thereto.

[0052] In some embodiments, the NCD-SSB configuration may be a configuration for the serving cell or a configuration for a particular bandwidth portion for the serving cell, as described below.

[0053] In some embodiments, the network device may configure an NCD-SSB for a serving cell. The configuration information for the NCD-SSB is included in a cell-specific configuration for a primary cell (PCELL) in an RRC reconfiguration message, or in a cell common configuration or a cell-specific configuration for a secondary cell (SCELL) or a primary secondary cell (PSCELL). For example, in the case of a second type of terminal device, the configuration information for the NCD-SSB is included in a cell-specific configuration (ServingCellConfig) for a PCell, and in the case of a first type of terminal device, the configuration information for the NCD-SSB is included in a cell-specific configuration (ServingCellConfig) for a PCELL, or in a cell common configuration (ServingCellConfigCommon) or a cell-specific configuration (ServingCellConfig) for a secondary cell (SCELL) or a primary secondary cell (PSCELL).

[0054] In some embodiments, the NCD-SSB frequency range may or may not be included in the currently active downlink BWP of the terminal device, since the NCD-SSB is not configured for a specific BWP but is configured for the serving cell. Figure 4 is a schematic diagram of the NCD-SSB frequency range of a second type of terminal device according to an embodiment of the present invention. As shown in Figure 4, the NCD-SSB frequency range is not located within the downlink BWP.

[0055] In some embodiments, the network device may configure an NCD-SSB in a specific bandwidth portion (BWP) of the serving cell, and the configuration information of the NCD-SSB may be included in the dedicated configuration of the initial downlink BWP or the dedicated or common configuration of the dedicated downlink BWP in the cell-dedicated configuration of the PCELL in the RRC reconfiguration message, or in the initial downlink BWP configuration in the cell-common or dedicated configuration of the SCELL / PSCELL, or in the common or dedicated configuration of the dedicated downlink BWP in the cell-dedicated configuration of the SCELL / PSCELL. For example, in the case of a first type of terminal device, the configuration information of the NCD-SSB is included in the dedicated configuration of a first initial downlink BWP (initialDownlinkBWP) in a cell dedicated configuration (ServingCellConfig) of a PCell, or is included in the common configuration or dedicated configuration of the dedicated downlink BWP, or is included in the initial downlink BWP configuration in a cell common configuration (ServingCellConfigCommon) or cell dedicated configuration (ServingCellConfig) of a SCell / PSCell, or is included in the common configuration or dedicated configuration of the dedicated downlink BWP in a cell dedicated configuration (ServingCellConfig) of a SCell / PSCell. In this way, when the first type of terminal device activates a specific BWP in the serving cell, it performs measurements using the NCD-SSB corresponding to the specific BWP. In the case of a second type of terminal device, the configuration information of the NCD-SSB may be located in the dedicated configuration of a dedicated initial downlink BWP (initialDownlinkBWP) in a cell dedicated configuration (ServingCellConfig) of a PCell. Thereby, when activating the second initial downlink BWP of the PCell, the second type terminal device can use the NCD-SSB measurement corresponding to the initial downlink BWP, or the NCD-SSB measurement may be included in the common configuration or dedicated configuration of the dedicated downlink BWP in the cell dedicated configuration (ServingCellConfig) of the PCell.This allows the second type of terminal device to perform measurements using the NCD-SSB corresponding to the dedicated downlink BWP when activating the dedicated downlink BWP of the PCell.

[0056] In some embodiments, the NCD-SSB is configured for a specific BWP, so that the frequency range of the NCD-SSB is included in the currently active downlink BWP of the terminal device. Figure 5 is a schematic diagram of the frequency range of the NCD-SSB for a second type of terminal device according to an embodiment of the present invention. As shown in Figure 5, the NCD-SSB is configured for a specific dedicated downlink BWP, so that the frequency range is included in the dedicated downlink BWP.

[0057] In some embodiments, a terminal device in a connected state uses NCD-SSB to perform measurements for at least one of radio resource management (RRM), physical random access channel (PRACH) opportunity selection, radio link monitoring (RLM), beam failure detection (BFD), or beam failure recovery (BFR). Specific measurement methods may refer to CD-SSB, and their description will be omitted here.

[0058] In some embodiments, the terminal device or network device may determine whether to perform measurements using a configured NCD-SSB, in other words, whether to perform measurements using NCD-SSB or CD-SSB. If it is determined to use NCD-SSB, it performs step 303.

[0059] For example, the terminal device may determine whether to perform measurements using the configured NCD-SSB. For example, if the frequency range of the NCD-SSB is included in the currently active downlink BWP, the terminal device in the connected state performs measurements in the connected state based on the NCD-SSB; otherwise, it continues to perform measurements in the connected state based on the CD-SSB. Alternatively, if the period of the NCD-SSB is smaller than a predetermined period, the terminal device in the connected state performs measurements in the connected state based on the NCD-SSB; otherwise, it continues to perform measurements in the connected state based on the CD-SSB. This is because, if the period of the NCD-SSB is too large, measurements using the NCD-SSB will cause a large delay and reduce the reliability of the measurements. The above description is merely exemplary, and the embodiments of the present invention are not limited thereto.

[0060] For example, the network device may determine whether the terminal device performs measurements using the configured NCD-SSB. The method may include the steps of: the terminal device transmitting capability indication information indicating that measurements need to be performed using NCD-SSB to the network device; and receiving first indication information transmitted by the network device. The first indication information is used to instruct the terminal device in a connected state to perform measurements based on NCD-SSB or to perform measurements in a connected state based on CD-SSB. For example, the first indication information is included in the measurement configuration transmitted by the network device. Furthermore, if the first indication information indicates that the terminal device in a connected state performs measurements based on NCD-SSB, the related measurement parameters in the measurement configuration are parameters for NCD-SSB measurements, such as a received power or a received quality threshold (s-MeasureConfig) or an L3 filter coefficient for starting measurements for non-serving cells by the terminal device, and description thereof will be omitted here. An embodiment of the network device side will be described in detail in Example 2.

[0061] Although the RRC reconfiguration message has been described above as an example, the configuration information may be carried by other dedicated RRC signaling, and the embodiments of the present invention are not limited thereto.

[0062] (2) NCD-SSB configuration information is carried in the system information of the serving cell In some embodiments, for a UE in an idle / inactive state, the network device may convey NCD-SSB configuration information via the system information of the serving cell. In conventional methods, a UE in an idle / inactive state performs mobility measurements for cell reselection based on the reception quality of NCD-SSB, resulting in the above-mentioned technical problems. In embodiments of the present invention, the network device conveys NCD-SSB configuration information via the system information and notifies the UE in the idle / inactive state, thereby supporting the UE in the idle / inactive state to perform measurements based on NCD-SSB, for example, allowing the UE to perform measurements of the serving cell in a cell reselection procedure using NCD-SSB. The UE in the idle / inactive state may be a second type of terminal device, but embodiments of the present invention are not limited thereto.

[0063] In some embodiments, for a UE in a connected state, the network device may convey NCD-SSB configuration information via system information of the serving cell. In the prior art, a terminal device in a connected state performs measurements using the detected CD-SSB, resulting in the above-mentioned technical problems. In embodiments of the present invention, the network device conveys NCD-SSB configuration information via system information and notifies the UE in a connected state, thereby supporting the UE in a connected state to perform measurements based on NCD-SSB. The UE in a connected state may include a first type terminal device or a second type terminal device, and embodiments of the present invention are not limited thereto.

[0064] In some embodiments, the NCD-SSB configuration may be a configuration for the serving cell or a configuration for a particular bandwidth portion of the serving cell, as described below.

[0065] The network device may configure an NCD-SSB for the serving cell. The NCD-SSB configuration information is included in SIB1, or the NCD-SSB configuration information is included in a cell common configuration (servingCellConfigCommon) included in SIB1. Because the NCD-SSB is configured for the serving cell, not for a specific BWP, the frequency range of the NCD-SSB may or may not be included in the BWP of the serving cell. For example, to camp on a second type of terminal device in a second initial downlink BWP, the frequency range of the NCD-SSB may be included in the second initial downlink BWP. Here, the second initial downlink BWP is used for the second type of terminal device, and the second initial downlink BWP does not include the NCD-SSB. Alternatively, the frequency range of the NCD-SSB may be included in the first initial downlink BWP, but not in the second initial downlink BWP, although this specification is not limited thereto. Figure 6 is a schematic diagram of the frequency range of the NCD-SSB for a second type of terminal device in an embodiment of the present invention. As shown in FIG. 6, the frequency range of NCD-SSB is not located within the second initial downlink BWP, and is not located within the first initial downlink BWP.

[0066] In some embodiments, the network device may configure an NCD-SSB in a specific bandwidth portion (BWP) of the serving cell. For example, the configuration information for the NCD-SSB is included in the common configuration for the first initial downlink BWP or the common configuration for the second initial downlink BWP in the cell common configuration (servingCellConfigCommon) included in SIB1. Since the NCD-SSB is configured for a specific BWP, the frequency range of the NCD-SSB is included in the specific BWP of the serving cell. For example, if the second initial BWP does not include a CD-SSB, an NCD-SSB is configured and included in the second initial downlink BWP to camp on the second initial BWP for a second-type terminal device. Figure 7 is a schematic diagram of the frequency range of the NCD-SSB for a second-type terminal device according to an embodiment of the present invention. As shown in Figure 7, the second initial BWP does not include a CD-SSB, and the frequency range of the NCD-SSB is included in the second initial downlink BWP.

[0067] In some embodiments, a terminal device in a connected state uses NCD-SSB to perform measurements for at least one of radio resource management (RRM), radio random access channel (PRACH) opportunity selection, radio link monitoring (RLM), beam failure detection (BFD), or beam failure recovery (BFR). A terminal device in an idle / inactive state uses NCD-SSB to perform mobility measurements for cell reselection. Specific measurement methods may refer to CD-SSB, and their description will be omitted here.

[0068] In some embodiments, the terminal device or network device may determine whether to measure using the configured NCD-SSB, in other words, whether to measure using NCD-SSB or CD-SSB. If it is determined to use NCD-SSB, step 303 is performed.

[0069] In some embodiments, the terminal device may determine whether to perform measurements using the configured NCD-SSB. For example, The frequency range of NCD-SSB is included in the initial downlink BWP; The initial downlink BWP includes a Common Search Space (CSS) configuration for paging; The system information block includes configuration information for cell reselection based on NCD-SSB; and If at least one condition that the period of the NCD-SSB is smaller than a predetermined period is met, the terminal device in the idle / inactive state performs measurements based on the NCD-SSB.

[0070] In some embodiments, a terminal device in an idle / inactive state performs measurements based on an NCD-SSB if the NCD-SSB configuration is for a serving cell, if the frequency location of the NCD-SSB is included in the initial downlink BWP (e.g., the second initial downlink BWP), the initial downlink BWP further includes a paging common search space, and the system information block (e.g., SIB2) includes configuration information for cell reselection based on the NCD-SSB; otherwise, the terminal device still performs measurements based on the NCD-SSB. This is because, if the frequency location of the NCD-SSB is included in the initial downlink BWP, the initial downlink BWP further includes a paging common search space, and the system information block (e.g., SIB2) includes configuration information for cell reselection based on the NCD-SSB, when the terminal device performs measurements for cell reselection based on the NCD-SSB, the terminal device does not need to switch reception frequency points and can camp on this initial downlink BWP to perform measurements for both paging monitoring and cell reselection, thereby maximizing power savings. Alternatively, if the period of the NCD-SSB is shorter than a predetermined period, the terminal device in the idle / inactive state performs measurements based on the NCD-SSB; otherwise, it still performs measurements based on the CD-SSB. This is because if the period of the NCD-SSB is too long, measurements using the NCD-SSB will cause a large delay and reduce the reliability of the measurements. The above is merely an exemplary description, and embodiments of the present invention are not limited thereto. For example, the terminal device in the idle / inactive state may be a second type of terminal device. As another example, a condition for the terminal device in the idle / inactive state to perform measurements based on the NCD-SSB further includes that the initial downlink BWP of the serving cell does not include a CD-SSB.

[0071] In some embodiments, a terminal device in idle / inactive state performs measurements based on the NCD-SSB if the NCD-SSB configuration is a specific BWP configuration for the serving cell, if the initial downlink BWP (e.g., the second initial downlink BWP) includes NCD-SSB configuration information and a paging common search space, and if the system information block (e.g., SIB2) includes configuration information for cell reselection based on the NCD-SSB; otherwise, it still performs measurements based on the NCD-SSB. This is because, if the initial downlink BWP (e.g., the second initial downlink BWP) includes NCD-SSB configuration information and a paging common search space, and if the system information block (e.g., SIB2) includes configuration information for cell reselection based on the NCD-SSB, the terminal device performs cell reselection measurements based on the NCD-SSB, thereby maximizing power savings because it does not need to switch reception frequency points and the terminal device can camp on the initial downlink BWP and perform paging monitoring and cell reselection measurements simultaneously. Alternatively, if the period of the NCD-SSB is smaller than a predetermined period, the terminal device in the idle / inactive state performs measurements based on the NCD-SSB; otherwise, it still performs measurements based on the CD-SSB. This is because if the period of the NCD-SSB is too large, measurements using the NCD-SSB will result in a large delay and reduced measurement reliability. The above is merely an exemplary description, and embodiments of the present invention are not limited thereto. For example, the terminal device in the idle / inactive state may be a second type of terminal device. As another example, the condition for the terminal device in the idle / inactive state to perform measurements based on the NCD-SSB further includes that the initial downlink BWP of the serving cell does not include the CD-SSB.

[0072] In some embodiments, a terminal device in a connected state performs measurements based on NCD-SSB if the frequency range of NCD-SSB is included in the currently active downlink BWP; otherwise, it still performs measurements based on CD-SSB. Alternatively, if the period of NCD-SSB is smaller than a predetermined period, the terminal device in a connected state performs measurements based on NCD-SSB; otherwise, it still performs measurements based on CD-SSB. This is because if the period of NCD-SSB is too large, measurements based on NCD-SSB will result in a large delay and reduce the reliability of the measurements. The above is merely an example, and embodiments of the present invention are not limited thereto. The terminal device in a connected state may be a first type terminal device or a second type terminal device, and the present invention is not limited thereto.

[0073] In some embodiments, for a terminal device in a connected state, the network device may determine whether to perform measurements using NCD-SSB configured by the terminal device. The method may further include the steps of the terminal device sending capability indication information to the network device indicating that NCD-SSB needs to be used to perform measurements, and the terminal device receiving first indication information sent by the network device, the first indication information being used to instruct the terminal device in the connected state to perform measurements based on NCD-SSB or CD-SSB. The first indication information is included in the measurement configuration sent by the network device. Also, if the first indication information indicates that the terminal device in the connected state will perform measurements based on NCD-SSB, all related measurement parameters in the measurement configuration are parameters for NCD-SSB measurements, such as s-MeasureConfig and L3 measurement filter coefficients, and their description will be omitted here. An embodiment on the network device side will be described in detail in Example 2.

[0074] Although the above description has been given using SIB1 as an example, the configuration information may be carried by other system information, and the embodiment of the present invention is not limited thereto.

[0075] (3) NCD-SSB configuration information is carried by the handover command RRC reconfiguration message In some embodiments, for a UE in a connected state, NCD-SSB configuration information may be carried in a handover command RRC reconfiguration message. In the conventional method, in the case of handover, the SSB absolute frequency point of the target cell (the serving cell after handover) carried in the handover command sent to the UE by the target network device (the network device of the serving cell after handover) is the frequency point position of the CD-SSB of the target cell. After handover, the terminal device can only perform measurements based on the CD-SSB. Therefore, the above-mentioned technical problem exists. In an embodiment of the present invention, the network device carries NCD-SSB configuration information in the handover command RRC reconfiguration message and notifies the UE, thereby enabling a UE in a connected state to perform measurements based on the NCD-SSB after handover to the target cell. A UE in a connected state may include a first-type terminal device or a second-type terminal device, and the embodiment of the present invention is not limited thereto.

[0076] In some embodiments, the common configuration of the serving cell (target cell) of the terminal device after handover, which is included in a handover command RRC reconfiguration message (e.g., an RRC message including a ReconfigurationWithSync information element), may include NCD-SSB configuration information. For example, the NCD-SSB configuration information (absolute frequency point of NCD-SSB) of the serving cell after handover may be indicated using an absolute SSB frequency point (absoluteFrequencySSB) information element included in a downlink frequency information element (FrequencyInfoDL) of the cell common configuration.

[0077] In some embodiments, the terminal device may preferably receive the common configuration of the second initial downlink BWP of the serving cell after handover via the handover command RRC reconfiguration message. For example, for a second type terminal device, the common configuration of the second initial downlink BWP (initialDownlinkBWP-RedCap) may be added to the downlink common configuration (DownlinkConfigCommon) in the common configuration (ServingCellConfigCommon) of the serving cell (target cell) after handover of the terminal device.

[0078] For example, the cell common configuration may be expressed using the abstract syntax ASN.1 data format as follows:

[0079] [Table 1] The above is merely an exemplary description, and embodiments of the present invention are not limited thereto.

[0080] In some embodiments, the NCD-SSB configuration information is included in the common configuration (ServingCellConfigCommon) of the serving cell (target cell) after handover of the terminal device, which is included in a handover command RRC reconfiguration message (e.g., an RRC reconfiguration message including ReconfigurationWithSync).

[0081] For example, if the absoluteFrequencySSB information element indicates the absolute frequency point of the NCD-SSB of the serving cell after handover, the SSB parameters in the cell common configuration (ServingCellConfigCommon) are related to the NCD-SSB. For example, the parameter ssb-periodicityServingCell indicates the periodicity of the NCD-SSB, the parameter SCS indicates the subcarrier spacing of the NCD-SSB, the parameter ss-PBCH-BlockPower indicates the transmit power of the NCD-SSB, the parameter ssb-PositionsInBurst indicates the SSB index actually transmitted by the NCD-SSB in each half-frame, and the parameter SSB-MTC indicates the time window position of the NCD-SSB (including the subframe offset in the periodicity and the number of consecutively transmitted subframes), but their description is omitted here.

[0082] In some embodiments, a terminal device in a connected state uses NCD-SSB to perform measurements for at least one of radio resource management (RRM), physical random access channel (PRACH) opportunity selection, radio link monitoring (RLM), beam failure detection (BFD), or beam failure recovery (BFR). A terminal device in an idle / inactive state uses NCD-SSB to perform mobility measurements for cell reselection. Specific measurement methods may refer to CD-SSB, and their description will be omitted here.

[0083] In some embodiments, the terminal device or network device may determine whether to measure using the configured NCD-SSB, in other words, whether to measure using NCD-SSB or CD-SSB. If it is determined that NCD-SSB is to be used, step 303 is performed.

[0084] In some embodiments, the terminal device may decide whether to perform measurements using the configured NCD-SSB, for example, if the frequency range of the NCD-SSB is included in the terminal device's active downlink BWP after handover, the terminal device performs connected state measurements based on the NCD-SSB after handover to the serving cell, otherwise, the terminal device still performs connected state measurements based on the NCD-SSB.

[0085] In some embodiments, a network device (a network device of a target cell or a network device of a serving cell after handover) may determine whether the terminal device should perform measurements using the configured NCD-SSB. The method may further include a step in which the terminal device transmits capability indication information to the source network device (a network device of a serving cell before handover), indicating that the terminal device needs to use NCD-SSB to perform measurements. The source network device forwards the capability indication information to the network device (transfers it during the handover preparation procedure). The method may also include a step in which the terminal device receives first indication information transmitted by the network device. The first indication information is used to instruct the terminal device in a connected state to perform measurements in a connected state based on NCD-SSB or CD-SSB. For example, the first indication information is included in the measurement configuration transmitted by the network device (the measurement configuration is carried by the handover command). Furthermore, if the first indication information indicates that the terminal device in the connected state performs measurements based on NCD-SSB, the related measurement parameters in the measurement configuration are all parameters of NCD-SSB measurements, such as s-MeasureConfig and L3 measurement filter coefficients, and the description thereof will be omitted here. The terminal device in the connected state may be a first type terminal device or a second type terminal device, and the embodiment of the present invention is not limited thereto.

[0086] In some embodiments, the terminal device needs to read system information (e.g., MIB or SIB1) transmitted by the serving cell (target cell) after the handover, and since the terminal device cannot read SIB1 via NCD-SSB but can only read SIB1 via CD-SSB, the method may further include a step in which the terminal device receives a SIB1 message of the serving cell after the handover via a handover command RRC reconfiguration message, so that the terminal device does not need to redetect CD-SSB after the handover and receive the MIB and SIB1 of the serving cell (target cell) after the handover.

[0087] It should be noted that although the handover command RRC reconfiguration message has been described above as an example, the configuration information may be carried by other handover commands, and the embodiments of the present invention are not limited thereto.

[0088] In some embodiments, in step 302, the terminal device may detect or receive the NCD-SSB based on the configuration information of the NCD-SSB, for example, may determine the time domain / frequency domain position of the NCD-SSB based on the time window, period, absolute frequency point, etc. of the NCD-SSB, and perform detection and reception. For specific details, reference may be made to the prior art, and the description thereof will be omitted here.

[0089] The above-described embodiments are merely examples of the present invention, and the present invention is not limited thereto. Appropriate modifications may be made based on the above-described embodiments. For example, each of the above-described embodiments may be used alone, or one or more of the above-described embodiments may be used in combination.

[0090] According to this embodiment, the network device sends the NCD-SSB configuration to the terminal device, so that the terminal device does not need to perform measurements using CD-SSB but can perform measurements using NCD-SSB, thereby reducing unnecessary switching of the UE between different frequency points and improving transmission efficiency and energy saving.

[0091] <Example 2> The embodiment of the present invention provides a signal transmission method, which is explained from the network device side.

[0092] 8 is a schematic diagram of an example of a signal transmission method according to an embodiment of the present invention. As shown in FIG. 8, the method includes the following steps:

[0093] Step 801: The network device sends the configuration information of the NCD-SSB of the serving cell to the terminal device. Step 802: The network device sends the NCD-SSB of the serving cell to the terminal device.

[0094] It should be noted that the above-mentioned FIG. 8 merely illustrates an example of the present invention, and the present invention is not limited thereto. For example, the execution order of various steps may be appropriately adjusted, some other steps may be added, or some steps may be removed. Those skilled in the art can make appropriate modifications based on the above content, and are not limited to the description of the above-mentioned FIG. 8.

[0095] In some embodiments, the aspects of steps 801 and 802 may refer to steps 301 and 302 in the first embodiment, and the description of the overlapping contents will be omitted.

[0096] In some embodiments, the specific content of the NCD-SSB configuration information may refer to Example 1, and the NCD-SSB configuration information may be carried by dedicated RRC signaling, by system information, or in a handover command. Specific reference may be made to Example 1, and the description thereof will be omitted here.

[0097] In some embodiments, the network device may decide whether to send / configure / instruct NCD-SSB configuration information, in other words, the network device may decide whether to configure NCD-SSB for the terminal device and whether to configure the frequency range of NCD-SSB within a specific BWP.

[0098] In some embodiments, if the initial downlink BWP or dedicated downlink BWP of the serving cell does not include CD-SSB, the network device transmits NCD-SSB configuration information of the serving cell and configures the frequency range of the NCD-SSB in the initial downlink BWP or dedicated downlink BWP of the serving cell. For example, the network device transmits the NCD-SSB configuration information of the serving cell to a UE in a connected state via an RRC reconfiguration message or system information, or transmits the NCD-SSB configuration information of the serving cell to a UE in an idle / inactive state via system information. The terminal device may be a first type terminal device or a second type terminal device, and embodiments of the present invention are not limited thereto. In some embodiments, if the second initial downlink BWP includes a common search space configuration for paging and does not include CD-SSB, the network device transmits the NCD-SSB configuration information of the serving cell and configures the frequency range of the NCD-SSB in the second initial downlink BWP of the serving cell. For example, the network device transmits the NCD-SSB configuration information of the serving cell via system information. The terminal device may be a UE in an idle / inactive state, or the terminal device may be a second type of terminal device, and the embodiments of the present invention are not limited thereto.

[0099] In some embodiments, if the BWP activated after the terminal device hands over to the serving cell does not include NCD-SSB, the network device transmits configuration information of the NCD-SSB of the serving cell after the handover and configures the frequency range of the NCD-SSB in the BWP activated after the terminal device hands over to the serving cell. For example, the network device transmits configuration information of the NCD-SSB of the serving cell after the handover (absolute frequency point of the NCD-SSB) to the terminal device via a handover command. The terminal device may be a UE in a connected state, and may be a first type terminal device or a second type terminal device, and embodiments of the present invention are not limited thereto.

[0100] In some embodiments, the network device may determine whether to perform measurements using the configured NCD-SSB. The method may further include the steps of: receiving capability indication information, sent by the terminal device (or forwarded by the source network device), indicating that NCD-SSB is required to perform measurements; and sending first indication information to the terminal device, the first indication information being used to instruct the terminal device in a connected state to perform measurements in a connected state based on NCD-SSB or CD-SSB. The first indication information is included in the measurement configuration sent by the network device. If the first indication information indicates that the terminal device in a connected state will perform measurements based on NCD-SSB, all related measurement parameters in the measurement configuration are parameters for NCD-SSB measurements. For details, refer to Example 1, and description thereof will be omitted here.

[0101] The above-described embodiments are merely examples of the present invention, and the present invention is not limited thereto. Appropriate modifications may be made based on the above-described embodiments. For example, each of the above-described embodiments may be used alone, or one or more of the above-described embodiments may be used in combination.

[0102] According to this embodiment, the network device sends the NCD-SSB configuration to the terminal device, so that the terminal device does not need to perform measurements using CD-SSB but can perform measurements using NCD-SSB, thereby reducing unnecessary switching of the UE between different frequency points and improving transmission efficiency and energy saving.

[0103] Example 3 An embodiment of the present invention provides a signal receiving device. The device may be, for example, a terminal device, or one or more elements or components configured in the terminal device. Descriptions of the same content as in the first embodiment will be omitted.

[0104] Figure 9 is a schematic diagram of an example of a signal receiving device according to an embodiment of the present invention. The implementation principle of the signal transmitting device according to this embodiment of the present invention is the same as that of embodiment 1, so overlapping content will not be described.

[0105] As shown in FIG. 9, a signal receiving device 900 according to an embodiment of the present invention includes the following units.

[0106] The first receiving unit 901 receives the non-cell defined synchronization signal and configuration information of the physical broadcast channel block (NCD-SSB) of the serving cell transmitted by the network device.

[0107] The second receiving unit 902 receives the NCD-SSB of the serving cell sent by the network device.

[0108] In some embodiments, the device may further include the following units:

[0109] The measurement unit 903 uses the NCD-SSB to measure the serving cell or measure the beam of the serving cell.

[0110] In some embodiments, the NCD-SSB configuration information includes the absolute frequency points of the NCD-SSB.

[0111] In some embodiments, the NCD-SSB configuration information further includes at least one of the following: a periodicity of the NCD-SSB, a subcarrier spacing of the NCD-SSB, a transmit power of the NCD-SSB, a time window configuration of the NCD-SSB, or an SSB index actually transmitted in each half-frame by the NCD-SSB.

[0112] In some embodiments, the periodicity of the NCD-SSB of the serving cell is the same as the periodicity of the CD-SSB of the serving cell, and / or the subcarrier spacing of the NCD-SSB of the serving cell is the same as the subcarrier spacing of the CD-SSB of the serving cell, and / or the transmit power of the NCD-SSB of the serving cell is the same as the transmit power of the CD-SSB of the serving cell, and / or the transmit time window of the NCD-SSB of the serving cell is the same as the transmit time window of the CD-SSB of the serving cell, and / or the SSB index actually transmitted in each half-frame of the NCD-SSB of the serving cell is the same as the SSB index actually transmitted in each half-frame of the CD-SSB of the serving cell, and / or the NCD-SSB beam of the serving cell is quasi-collocated (QCL) with the CD-SSB beam of the serving cell having the same index.

[0113] In some embodiments, the device further comprises the following units:

[0114] A determination unit (optional, not shown) determines the NCD-SSB configuration information based on the CD-SSB configuration information of the serving cell.

[0115] The NCD-SSB configuration information includes the duration of the NCD-SSB, the subcarrier spacing of the NCD-SSB, the transmission power of the NCD-SSB, the time window position of the NCD-SSB, and the SSB index actually transmitted in each half frame by the NCD-SSB.

[0116] In some embodiments, the NCD-SSB configuration information is carried in an RRC reconfiguration message.

[0117] In some embodiments, the NCD-SSB configuration is a configuration for the serving cell.

[0118] In some embodiments, the configuration information for NCD-SSB is included in the cell-specific configuration of the PCELL in the RRC reconfiguration message, or in the cell-common configuration or cell-specific configuration of the secondary cell (SCELL) or primary secondary cell (PSCELL).

[0119] In some embodiments, the frequency range of the NCD-SSB may or may not be included in the terminal device's currently active downlink BWP.

[0120] In some embodiments, the NCD-SSB configuration is a specific bandwidth portion (BWP) configuration for the serving cell.

[0121] In some embodiments, the configuration information of the NCD-SSB is included in the dedicated configuration of the initial downlink BWP in the cell-dedicated configuration of the PCELL in the RRC reconfiguration message, or in the dedicated or common configuration of the dedicated downlink BWP, or in the initial downlink BWP configuration in the cell-common or dedicated configuration of the SCELL / PSCELL, or in the common or dedicated configuration of the dedicated downlink BWP in the cell-dedicated configuration of the SCELL / PSCELL.

[0122] In some embodiments, the frequency range of the NCD-SSB is included in the terminal device's currently active downlink BWP.

[0123] In some embodiments, the NCD-SSB configuration information is carried in the system information of the serving cell.

[0124] In some embodiments, the NCD-SSB configuration is a configuration for the serving cell.

[0125] In some embodiments, the configuration information for the NCD-SSB is included in SIB1, or the configuration information for the NCD-SSB is included in a cell common configuration included in SIB1.

[0126] In some embodiments, the frequency range of the NCD-SSB may or may not be included in the second initial downlink BWP of the serving cell, and the second initial downlink BWP does not include the NCD-SSB.

[0127] In some embodiments, the NCD-SSB configuration is for a particular bandwidth portion (BWP) of the serving cell.

[0128] In some embodiments, the configuration information of the NCD-SSB is included in the common configuration of the first initial downlink BWP or the common configuration of the second initial downlink BWP among the cell common configurations included in SIB1, and the first initial downlink BWP is used for normal or enhanced capability terminal devices, and the second initial downlink BWP is used for reduced capability terminal devices.

[0129] In some embodiments, the frequency range of the NCD-SSB is included in the second initial downlink BWP of the serving cell, and the second initial downlink BWP does not include the CD-SSB.

[0130] In some embodiments, the measurement unit 903 of the connected terminal device uses NCD-SSB to: Radio Resource Management (RRM), Physical Random Access Channel (PRACH) opportunity selection, Radio Link Monitoring (RLM), and Measurements are made for at least one of the following purposes: beam fault detection (BFD) or beam fault recovery (BFR).

[0131] In some embodiments, if the frequency range of the NCD-SSB is included in the currently activated downlink BWP, or if the period of the NCD-SSB is smaller than a predetermined period, the measurement unit 903 of the terminal device in the connected state performs measurements in the connected state based on the NCD-SSB.

[0132] In some embodiments, the device further comprises the following units:

[0133] A first transmitter (optional, not shown) transmits capability indication information to the network device indicating that NCD-SSB should be used to perform measurements.

[0134] In some embodiments, the measurement unit 903 of an idle or inactive terminal device uses NCD-SSB to perform measurements on the serving cell in a cell reselection procedure.

[0135] In some embodiments, the frequency range of the NCD-SSB is included in the initial downlink BWP; The initial downlink BWP includes a Common Search Space (CSS) configuration for paging; The system information block includes configuration information for cell reselection based on NCD-SSB; and If at least one condition is met that the period of the NCD-SSB is smaller than the predetermined period, The measurement unit 903 of the terminal device in the idle / inactive state performs measurements based on the NCD-SSB.

[0136] In some embodiments, the NCD-SSB configuration information is carried in a handover command RRC reconfiguration message.

[0137] In some embodiments, the common configuration of the serving cell after handover of the terminal device included in the handover command RRC reconfiguration message includes NCD-SSB configuration information.

[0138] In some embodiments, the device further comprises the following units:

[0139] A third receiving unit (optional, not shown) receives the common configuration of the second initial downlink BWP of the serving cell after the handover via a handover command RRC reconfiguration message.

[0140] In some embodiments, the device further comprises the following units:

[0141] A fourth receiving unit (optional, not shown) receives the SIB1 message of the serving cell after the handover via a handover command RRC reconfiguration message.

[0142] In some embodiments, if the active downlink BWP of the terminal device after handover includes the frequency range of NCD-SSB, the measurement unit 903 of the terminal device performs measurements in a connected state based on NCD-SSB after handover to the serving cell.

[0143] In some embodiments, the device further comprises the following units:

[0144] A fifth receiving unit (optional, not shown) receives first indication information sent by the network device, which is used to instruct the terminal device in a connected state to perform measurements in a connected state based on NCD-SSB or CD-SSB.

[0145] In some embodiments, the first indication is included in a measurement configuration transmitted by the network device.

[0146] Although the above description only describes components or modules related to the present invention, the present invention is not limited thereto. The signal receiving device 900 may further include other components or modules. For specific details of these components or modules, reference may be made to the related art.

[0147] 9 only exemplarily illustrates the connection relationships or signal directions between various components or modules, but it will be apparent to those skilled in the art that various related technologies, such as bus connections, may be used. The various components or modules described above may be implemented by hardware devices, such as a processor, a memory, a transmitter, and a receiver, and the present invention is not limited thereto.

[0148] According to this embodiment, the network device sends the NCD-SSB configuration to the terminal device, so that the terminal device does not need to perform measurements using CD-SSB but can perform measurements using NCD-SSB, thereby reducing unnecessary switching of the UE between different frequency points and improving transmission efficiency and energy saving.

[0149] Example 4 An embodiment of the present invention provides a signal transmission device. The device may be, for example, a network device, or one or more elements or components configured in the network device. Descriptions of the same content as in the second embodiment will be omitted.

[0150] Figure 10 is a schematic diagram of an example of a signal transmission device according to an embodiment of the present invention. The implementation principle of the signal transmission device according to this embodiment of the present invention is the same as that of embodiment 2, so a description of the overlapping content will be omitted.

[0151] As shown in FIG. 10, a signal transmitting device 1000 according to an embodiment of the present invention includes the following units.

[0152] The second transmitting unit 1001 transmits the configuration information of the NCD-SSB of the serving cell to the terminal device.

[0153] The third transmitting unit 1002 transmits the NCD-SSB of the serving cell to the terminal device.

[0154] In some embodiments, the specific content of the NCD-SSB configuration information may refer to Example 1, and the NCD-SSB configuration information may be carried by dedicated RRC signaling, by system information, or in a handover command. Specific reference may be made to Example 1, and the description thereof will be omitted here.

[0155] In some embodiments, the device further comprises the following units:

[0156] A sixth receiving unit (optional, not shown) receives capability indication information transmitted by a terminal device or other network device indicating that NCD-SSB needs to be used to perform measurements.

[0157] In some embodiments, if the initial downlink BWP or the dedicated downlink BWP of the serving cell does not include a CD-SSB, the second transmitting unit transmits configuration information of the NCD-SSB of the serving cell and configures the frequency range of the NCD-SSB in the initial downlink BWP or the dedicated downlink BWP of the serving cell.

[0158] In some embodiments, if the second initial downlink BWP includes a common search space configuration for paging and the second initial downlink BWP does not include a CD-SSB, the second transmitter transmits NCD-SSB configuration information of the serving cell and configures a frequency range of the NCD-SSB in the second initial downlink BWP of the serving cell.

[0159] In some embodiments, if the BWP activated after the terminal device hands over to the serving cell does not include NCD-SSB, the second transmitting unit transmits configuration information of the NCD-SSB of the serving cell after the handover, and configures the frequency range of the NCD-SSB in the BWP activated after the terminal device hands over to the serving cell.

[0160] In some embodiments, the device may further include the following units:

[0161] A fourth sending unit (optional, not shown) sends first indication information to the terminal device. The first indication information is used to instruct the connected terminal device to perform measurements based on NCD-SSB or CD-SSB. The first indication information is included in the measurement configuration sent by the network device.

[0162] Although the above description is limited to the components or modules related to the present invention, the present invention is not limited thereto. The signal transmission device 1000 may further include other components or modules. For specific details of these components or modules, please refer to the related art.

[0163] 10 only exemplarily illustrates the connection relationships or signal directions between various components or modules, but it will be apparent to those skilled in the art that various related technologies, such as bus connections, may be used. The various components or modules described above may be implemented by hardware devices, such as a processor, a memory, a transmitter, and a receiver, and the present invention is not limited thereto.

[0164] According to this embodiment, the network device sends the NCD-SSB configuration to the terminal device, so that the terminal device does not need to perform measurements using CD-SSB but can perform measurements using NCD-SSB, thereby reducing unnecessary switching of the UE between different frequency points and improving transmission efficiency and energy saving.

[0165] <Example 5> The embodiment of the present invention further provides a communication system, and may refer to FIG. 1, and the description of the same contents as those in the first to fourth embodiments will be omitted.

[0166] In some embodiments, the communication system may include a terminal 1100 .

[0167] In some embodiments, the communication system may include a network device 1200 .

[0168] The embodiment of the present invention further provides a terminal device, but the present invention is not limited thereto and may be other devices.

[0169] 11 is a schematic diagram of a network device according to an embodiment of the present invention. As shown in FIG. 11, a terminal device 1100 may include a processor 1101 and a memory 1102, where the memory 1102 stores data and programs and is connected to the processor 1101. It should be noted that this diagram is illustrative only, and other types of structures may be used to supplement or replace this structure to realize communication functions or other functions.

[0170] For example, the processor 1101 may be configured to execute a program to implement the method executed by the terminal device in the first embodiment.

[0171] 11, the terminal device 1100 may further include a communication module 1103, an input unit 1104, a display 1105, a power supply 1106, and the like. The functions of the above units are the same as those of the prior art, and therefore a description thereof will be omitted here. The terminal device 1100 does not need to include all of the units shown in FIG. 11. The terminal device 1100 may further include units not shown in FIG. 11, and prior art may be referred to.

[0172] An embodiment of the present invention further provides a network device, which may be, for example, a base station, but the present invention is not limited thereto and may be other network devices.

[0173] 12 is a schematic diagram of a terminal device according to an embodiment of the present invention. As shown in FIG. 12, a network device 1200 may include a processor (e.g., a central processing unit (CPU)) 1201 and a memory 1202, and the memory 1202 is connected to the processor 1201. The memory 1202 may store various data, and may further store an information processing program and execute the program under the control of the processor 1201.

[0174] For example, the processor 1201 may be configured to execute a program to implement the method in the second embodiment.

[0175] 12, the network device 1200 may further include a transceiver 1203 and an antenna 1204. The functions of the above components are similar to those of the prior art, and the description thereof will be omitted here. The network device 1200 does not need to include all the units shown in FIG. 12. The network device 1200 may further include units not shown in FIG. 12, and may refer to the prior art.

[0176] An embodiment of the present invention further provides a computer-readable program, which, when executed in a terminal device, causes the terminal device to perform the method described in embodiment 1.

[0177] An embodiment of the present invention further provides a storage medium having a computer-readable program stored therein, the program causing a terminal device to perform the method described in embodiment 1 when the program is executed.

[0178] An embodiment of the present invention further provides a computer-readable program, which, when executed in a network device, causes the network device to perform the method described in embodiment 2.

[0179] An embodiment of the present invention further provides a storage medium having a computer-readable program stored thereon, the program causing a network device to perform the method described in embodiment 2 when the program is executed.

[0180] The above-described apparatus and method of the present invention may be realized by hardware or a combination of hardware and software. The present invention relates to a computer-readable program that, when executed by a logic unit, causes the logic unit to implement the above-described apparatus or components, or to implement the above-described various methods or steps. The present invention also relates to a storage medium for storing the above-described program, such as a hard disk, magnetic disk, optical disk, DVD, flash memory, etc.

[0181] Each processing method in each device described with reference to the embodiments of the present invention may be implemented by hardware, a software module executed by a processor, or a combination of both. For example, one or more of the functional block diagrams shown in the drawings, or one or more combinations of the functional block diagrams, may correspond to each software module in a computer program flow or each hardware module. These software modules may correspond to each step shown in the drawings. These hardware modules may be implemented by implementing these software modules in hardware, for example, using a field programmable gate array (FPGA).

[0182] The software module may be located in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, mobile hard disk, CD-ROM, or any other form of storage medium known to those skilled in the art. The storage medium may be connected to the processor so that the processor reads information from or writes information to the storage medium, or the storage medium may be a component of the processor. The processor and the storage medium may be located in an ASIC. The software module may be stored in the memory of the mobile terminal or in a memory card inserted into the mobile terminal. For example, if a device (e.g., a mobile terminal) uses a relatively large-capacity MEGA-SIM card or a large-capacity flash memory device, the software module may be stored in the MEGA-SIM card or the large-capacity flash memory device.

[0183] One or more functional blocks and / or one or more combinations of functional blocks in the functional block diagrams set forth in the figures may be implemented with a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, or any suitable combination thereof to perform the functions described herein. One or more functional blocks and / or one or more combinations of functional blocks in the functional block diagrams set forth in the figures may be implemented with, for example, a combination of computing devices, such as a combination of a DSP and a microprocessor, a combination of multiple microprocessors, one or more microprocessors in combination with a DSP communication, or any other configuration.

[0184] Although the present invention has been described above with reference to specific embodiments, the above description is merely illustrative and does not limit the scope of protection of the present invention. Various modifications and changes may be made to the present invention without departing from the spirit and principles of the present invention, and these modifications and changes are also within the scope of the present invention.

[0185] Furthermore, the following supplementary notes are disclosed regarding the embodiments including the above examples. (Appendix 1) A signal reception method applied to a terminal device, comprising: A first step in which a terminal device receives configuration information of a non-cell-defined synchronization signal and physical broadcast channel block (NCD-SSB) of a serving cell transmitted by a network device; The method includes a step in which the terminal device receives the NCD-SSB of the serving cell transmitted by the network device. (Appendix 2) The method described in Supplementary Note 1, further comprising a step in which the terminal device uses the NCD-SSB to measure the serving cell or measure the beam of the serving cell. (Appendix 3) 3. The method of claim 1, wherein the NCD-SSB configuration information includes an absolute frequency point of the NCD-SSB. (Appendix 4) The method described in Supplementary Note 3, wherein the NCD-SSB configuration information further includes at least one of a periodicity of the NCD-SSB, a subcarrier spacing of the NCD-SSB, a transmission power of the NCD-SSB, a time window configuration of the NCD-SSB, or an SSB index actually transmitted in each half frame by the NCD-SSB. (Appendix 5) The period of the NCD-SSB of the serving cell is the same as the period of the CD-SSB of the serving cell, and / or The subcarrier spacing of the NCD-SSB of the serving cell is the same as the subcarrier spacing of the CD-SSB of the serving cell, and / or The transmission power of the NCD-SSB of the serving cell is the same as the transmission power of the CD-SSB of the serving cell, and / or The transmission time window of the NCD-SSB of the serving cell is the same as the transmission time window of the CD-SSB of the serving cell, and / or The SSB index actually transmitted in each half-frame of the NCD-SSB of the serving cell is the same as the SSB index actually transmitted in each half-frame of the CD-SSB of the serving cell, and / or 5. The method of claim 4, wherein the NCD-SSB beam of the serving cell has a quasi-collocated (QCL) relationship with the CD-SSB beam of the serving cell having the same index. (Appendix 6) The terminal device determines the NCD-SSB configuration information based on the CD-SSB configuration information of the serving cell; The method described in Supplementary Note 5, wherein the configuration information of the NCD-SSB includes the duration of the NCD-SSB, the subcarrier spacing of the NCD-SSB, the transmission power of the NCD-SSB, the time window position of the NCD-SSB, and the SSB index at which the NCD-SSB is actually transmitted in each half frame. (Appendix 7) 7. The method of any one of Supplementary Notes 1 to 6, wherein the NCD-SSB configuration information is carried by an RRC reconfiguration message. (Appendix 8) The method described in Supplementary Note 7, wherein the NCD-SSB configuration is a configuration for the serving cell. (Appendix 9) The method described in Supplementary Note 8, wherein the configuration information of the NCD-SSB is included in the cell-specific configuration of the PCELL in the RRC reconfiguration message, or is included in the cell common configuration or cell-specific configuration of the secondary cell (SCELL) or primary secondary cell (PSCELL). (Appendix 10) 9. The method of claim 8, wherein the frequency range of the NCD-SSB is included or not included in the currently active downlink BWP of the terminal device. (Appendix 11) The method described in Supplementary Note 7, wherein the NCD-SSB configuration is a specific bandwidth portion (BWP) configuration for the serving cell. (Appendix 12) The method described in Supplementary Note 11, wherein the configuration information of the NCD-SSB is included in the dedicated configuration of the initial downlink BWP in the cell dedicated configuration of the PCELL in the RRC reconfiguration message, or in the dedicated or common configuration of the dedicated downlink BWP, or in the initial downlink BWP configuration in the cell common configuration or dedicated configuration of the SCELL / PSCELL, or in the common or dedicated configuration of the dedicated downlink BWP in the cell dedicated configuration of the SCELL / PSCELL. (Appendix 13) 12. The method of claim 11, wherein the frequency range of the NCD-SSB is included in a currently active downlink BWP of the terminal device. (Appendix 14) 7. The method of any one of Supplementary Notes 1 to 6, wherein the NCD-SSB configuration information is carried by system information of the serving cell. (Appendix 15) 15. The method of claim 14, wherein the NCD-SSB configuration is a configuration for the serving cell. (Appendix 16) The configuration information of the NCD-SSB is included in SIB1, or The method described in Supplementary Note 15, wherein the configuration information of the NCD-SSB is included in a cell common configuration included in SIB1. (Appendix 17) The frequency range of the NCD-SSB is included or not included in the second initial downlink BWP of the serving cell; 16. The method of claim 15, wherein the second initial downlink BWP does not include CD-SSB. (Appendix 18) The method described in Supplementary Note 14, wherein the NCD-SSB configuration is a configuration for a specific bandwidth portion (BWP) of the serving cell. (Appendix 19) The configuration information of the NCD-SSB is included in the common configuration of the first initial downlink BWP or the common configuration of the second initial downlink BWP among the cell common configurations included in SIB1, The first initial downlink BWP is used for a normal or enhanced terminal device; 19. The method of claim 18, wherein the second initial downlink BWP is used for a reduced capability terminal device. (Appendix 20) the frequency range of the NCD-SSB is included in a second initial downlink BWP of the serving cell; 19. The method of claim 18, wherein the second initial downlink BWP does not include CD-SSB. (Appendix 21) The terminal device in the connected state uses the NCD-SSB Radio Resource Management (RRM), Physical Random Access Channel (PRACH) opportunity selection, Radio Link Monitoring (RLM), and 21. The method of any of claims 7 to 20, wherein measurements are performed for at least one of the following purposes: beam fault detection (BFD) or beam fault recovery (BFR). (Appendix 22) 21. A method according to any one of Supplementary Notes 7 to 20, wherein if the frequency range of the NCD-SSB is included in the currently active downlink BWP or if the period of the NCD-SSB is smaller than a predetermined period, the terminal device in a connected state performs measurements in a connected state based on the NCD-SSB. (Appendix 23) 21. A method as described in any of Supplementary Notes 7 to 20, further comprising a step of the terminal device sending capability indication information to the network device indicating that NCD-SSB needs to be used to perform measurements. (Appendix 24) A method according to any one of Supplementary Notes 14 to 20, wherein the terminal device in an idle or inactive state uses the NCD-SSB to perform measurements on the serving cell in a cell reselection procedure. (Appendix 25) The frequency range of the NCD-SSB is included in the initial downlink BWP; the initial downlink BWP includes a common search space (CSS) configuration for paging; The system information block includes configuration information for cell reselection based on NCD-SSB; and If at least one condition is satisfied that the period of the NCD-SSB is smaller than a predetermined period, A method according to any one of Supplementary Notes 14 to 20, wherein a terminal device in an idle / inactive state performs measurements based on the NCD-SSB. (Appendix 26) 7. The method of any one of Supplementary Notes 1 to 6, wherein the NCD-SSB configuration information is carried by a handover command RRC reconfiguration message. (Appendix 27) The method described in Supplementary Note 26, wherein the common configuration of the serving cell after handover of the terminal device included in the handover command RRC reconfiguration message includes the NCD-SSB configuration information. (Appendix 28) The method of claim 26, wherein the terminal device receives a common configuration of a second initial downlink BWP of a serving cell after handover via the handover command RRC reconfiguration message. (Appendix 29) A method according to any one of Supplementary Notes 26 to 28, wherein the terminal device receives a SIB1 message of the serving cell after handover via the handover command RRC reconfiguration message. (Appendix 30) 29. A method according to any one of Supplementary Notes 26 to 28, wherein if the active downlink BWP of the terminal device after handover includes the frequency range of the NCD-SSB, the terminal device performs measurements in a connected state based on the NCD-SSB after handover to the serving cell. (Appendix 31) 29. A method according to any one of Supplementary Notes 7 to 28, further comprising a step of receiving, by the terminal device, first instruction information sent by the network device, the first instruction information being used to instruct the terminal device in a connected state to perform measurements in a connected state based on NCD-SSB or CD-SSB. (Appendix 32) 32. The method of claim 31, wherein the first indication information is included in a measurement configuration sent by the network device. (Appendix 33) A signal transmission method applied to a network device, comprising: A step in which the network device sends NCD-SSB configuration information of the serving cell to the terminal device; The method includes a step in which the network device transmits an NCD-SSB of the serving cell to the terminal device. (Appendix 34) 34. The method of claim 33, wherein the configuration information of the NCD-SSB includes an absolute frequency point of the NCD-SSB. (Appendix 35) 35. The method of claim 34, wherein the configuration information of the NCD-SSB further includes at least one of a periodicity of the NCD-SSB, a subcarrier spacing of the NCD-SSB, a transmission power of the NCD-SSB, a time window configuration of the NCD-SSB, or an SSB index actually transmitted in each half frame by the NCD-SSB. (Appendix 36) 34. The method of any of Supplementary Notes, further comprising the step of the network device receiving capability indication information sent by the terminal device or another network device indicating that NCD-SSB needs to be used to perform measurements. (Appendix 37) 37. The method of any of Supplementary Notes 33 to 36, wherein if the initial downlink BWP or dedicated downlink BWP of the serving cell does not include a CD-SSB, the network device sends configuration information of the NCD-SSB of the serving cell and configures the frequency range of the NCD-SSB in the initial downlink BWP or dedicated downlink BWP of the serving cell. (Appendix 38) 36. The method of any of Supplementary Notes 33 to 35, wherein if the second initial downlink BWP includes a common search space configuration for paging and the second initial downlink BWP does not include CD-SSB, the network device transmits NCD-SSB configuration information of the serving cell and configures the frequency range of the NCD-SSB in the second initial downlink BWP of the serving cell. (Appendix 39) A method according to any one of Supplementary Notes 33 to 36, wherein if the BWP activated after the terminal device hands over to the serving cell does not include NCD-SSB, the network device sends NCD-SSB configuration information of the serving cell after handover and configures the frequency range of the NCD-SSB in the BWP activated after the terminal device hands over to the serving cell. (Appendix 40) 38. The method of any of Supplementary Notes 33 to 37, wherein the NCD-SSB configuration information is carried by an RRC reconfiguration message. (Appendix 41) The method described in Supplementary Note 40, wherein the NCD-SSB configuration is a configuration for the serving cell. (Appendix 42) The method described in Supplementary Note 41, wherein the configuration information of the NCD-SSB is included in the cell-specific configuration of the PCELL in the RRC reconfiguration message, or is included in the cell common configuration or cell-specific configuration of the secondary cell (SCELL) or primary secondary cell (PSCELL). (Appendix 43) 42. The method of claim 41, wherein the frequency range of the NCD-SSB is included or not included in the currently active downlink BWP of the terminal device. (Appendix 44) The method described in Supplementary Note 40, wherein the NCD-SSB configuration is a specific bandwidth portion (BWP) configuration for the serving cell. (Appendix 45) The method described in Supplementary Note 44, wherein the configuration information of the NCD-SSB is included in the dedicated configuration of the initial downlink BWP in the cell dedicated configuration of the PCELL in the RRC reconfiguration message or the dedicated configuration or common configuration of the dedicated downlink BWP, or in the initial downlink BWP configuration in the cell common configuration or dedicated configuration of the SCELL / PSCELL, or in the common configuration or dedicated configuration of the dedicated downlink BWP in the cell dedicated configuration of the SCELL / PSCELL. (Appendix 46) 45. The method of claim 44, wherein the frequency range of the NCD-SSB is included in a currently activated downlink BWP of the terminal device. (Appendix 47) 39. The method of any of Supplementary Notes 33 to 38, wherein the NCD-SSB configuration information is carried by system information of the serving cell. (Appendix 48) 49. The method of claim 48, wherein the NCD-SSB configuration is a configuration for the serving cell. (Appendix 49) The configuration information of the NCD-SSB is included in SIB1, or The method described in Supplementary Note 48, wherein the configuration information of the NCD-SSB is included in a cell common configuration included in SIB1. (Appendix 50) The frequency range of the NCD-SSB is included or not included in the second initial downlink BWP of the serving cell; 49. The method of claim 48, wherein the second initial downlink BWP does not include CD-SSB. (Appendix 51) The method described in Supplementary Note 47, wherein the NCD-SSB configuration is a configuration for a specific bandwidth portion (BWP) of the serving cell. (Appendix 52) The configuration information of the NCD-SSB is included in the common configuration of the first initial downlink BWP or the common configuration of the second initial downlink BWP among the cell common configurations included in SIB1, The first initial downlink BWP is used for a normal or enhanced terminal device; 52. The method of claim 51, wherein the second initial downlink BWP is used for a reduced capability terminal device. (Appendix 53) the frequency range of the NCD-SSB is included in a second initial downlink BWP of the serving cell; 52. The method of claim 51, wherein the second initial downlink BWP does not include CD-SSB. (Appendix 54) 40. The method of any of Supplementary Notes 33 to 36 or 39, wherein the NCD-SSB configuration information is carried by a handover command RRC reconfiguration message. (Appendix 55) The method described in Supplementary Note 54, wherein the common configuration of the serving cell after handover of the terminal device included in the handover command RRC reconfiguration message includes the NCD-SSB configuration information. (Appendix 56) 56. The method of claim 55, wherein the network device sends a common configuration of a second initial downlink BWP of a serving cell after handover via the handover command RRC reconfiguration message. (Appendix 57) 57. A method as claimed in any one of appendices 54 to 56, wherein the network device sends a SIB1 message of the serving cell after handover via the handover command RRC reconfiguration message. (Appendix 58) 58. A method as recited in any of Supplementary Notes 34 to 57, further comprising a step in which the network device sends first instruction information to the terminal device, the first instruction information being used to instruct the connected terminal device to perform measurements based on NCD-SSB or CD-SSB. (Appendix 59) 59. The method of claim 58, wherein the first indication information is included in a measurement configuration sent by the network device. (Appendix 60) 60. A network device comprising: a memory having a computer program stored therein; and a processor, the processor configured to execute the computer program to implement a method according to any one of claims 33 to 59. (Appendix 61) 33. A terminal device comprising: a memory having a computer program stored therein; and a processor, the processor configured to execute the computer program to implement a method according to any one of claims 1 to 32. (Appendix 62) 59. A communications system comprising: a network device; and a terminal device, the network device configured to perform a method as set forth in any of Supplementary Notes 33 to 59; and the terminal device configured to perform a method as set forth in any of Supplementary Notes 1 to 32.

Claims

1. A signal receiving device applied to a terminal device, a receiving unit configured to receive a non-cell-defined synchronization signal and physical broadcast channel block (NCD-SSB) configuration information of a serving cell from a network device, and to receive the NCD-SSB of the serving cell from the network device, wherein the configuration information of the NCD-SSB includes an absolute frequency point of the NCD-SSB and a period of the NCD-SSB; a processing unit that determines the configuration information of the NCD-SSB based on configuration information of the CD-SSB of the serving cell; The configuration information of the NCD-SSB includes at least one of the period of the NCD-SSB, the transmission power of the NCD-SSB, and an SSB index in which the NCD-SSB is actually transmitted in each half frame; The period of the NCD-SSB of the serving cell is the same as the period of the CD-SSB of the serving cell, and / or The transmission power of the NCD-SSB of the serving cell is the same as the transmission power of the CD-SSB of the serving cell, and / or A signal receiving device, wherein the SSB index actually transmitted in each half frame of the NCD-SSB of the serving cell is the same as the SSB index actually transmitted in each half frame of the CD-SSB of the serving cell.

2. The signal receiving device according to claim 1 , further comprising a processing unit that performs measurement of the serving cell or beam measurement of the serving cell using the NCD-SSB.

3. 2. The signal receiving device according to claim 1, wherein the configuration information of the NCD-SSB further includes at least one of a subcarrier spacing of the NCD-SSB, a transmission power of the NCD-SSB, a measurement time configuration of the NCD-SSB, or an SSB index actually transmitted in each half frame by the NCD-SSB.

4. The signal receiving device according to claim 1 , wherein the NCD-SSB configuration information is carried by an RRC reconfiguration message.

5. The signal receiving device according to claim 4, wherein the configuration information of the NCD-SSB is included in a dedicated configuration of an initial downlink BWP in a cell-dedicated configuration of PCELL in the RRC reconfiguration message, or in a dedicated configuration or common configuration of a dedicated downlink BWP, or in an initial downlink BWP configuration in a cell-common configuration or cell-dedicated configuration of SCELL / PSCELL, or in a common configuration or dedicated configuration of a dedicated downlink BWP in a cell-dedicated configuration of SCELL / PSCELL.

6. The signal receiving device according to claim 4, wherein the NCD-SSB configuration is a specific bandwidth portion (BWP) configuration for the serving cell.

7. The signal receiving device according to claim 1 , wherein the configuration information of the NCD-SSB is carried by system information of the serving cell.

8. The NCD-SSB configuration is a configuration for the serving cell, The signal receiving device according to claim 7, wherein the configuration information of the NCD-SSB is included in SIB1, or the configuration information of the NCD-SSB is included in a cell common configuration included in SIB1.

9. The signal receiving device according to claim 1 , wherein the configuration information of the NCD-SSB is carried by a handover command RRC reconfiguration message.

10. 10. The signal receiving device of claim 9, wherein if the frequency range of the NCD-SSB is included in the active downlink BWP of the terminal device in the handover command RRC reconfiguration message, the terminal device performs measurements in a connected state based on the NCD-SSB after handing over to the serving cell.

11. 2. The signal receiving device according to claim 1, wherein, when CD-SSB is not included in an initial downlink BWP or a dedicated downlink BWP, the receiving unit receives configuration information of an NCD-SSB of the serving cell and configures a frequency range of the NCD-SSB within the initial downlink BWP or the dedicated downlink BWP.

12. A signal transmission device applied to a network device, comprising: a transmitter that transmits configuration information of an NCD-SSB of a serving cell to a terminal device and transmits the NCD-SSB of the serving cell to the terminal device, the configuration information of the NCD-SSB including an absolute frequency point of the NCD-SSB and a period of the NCD-SSB; The configuration information of the NCD-SSB is determined based on configuration information of the CD-SSB of the serving cell; The configuration information of the NCD-SSB includes at least one of the period of the NCD-SSB, the transmission power of the NCD-SSB, and an SSB index in which the NCD-SSB is actually transmitted in each half frame; The period of the NCD-SSB of the serving cell is the same as the period of the CD-SSB of the serving cell, and / or The transmission power of the NCD-SSB of the serving cell is the same as the transmission power of the CD-SSB of the serving cell, and / or A signal transmitting device, wherein the SSB index actually transmitted in each half frame of the NCD-SSB of the serving cell is the same as the SSB index actually transmitted in each half frame of the CD-SSB of the serving cell.

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