Wireless communication methods, terminal devices and network devices

Abstract

Provided are wireless communication methods, terminal devices and network devices. A method comprises: a terminal device receiving a first signal sent by a network device, wherein the first signal and / or a first rule are used for performing performance monitoring on a first SSB, the first rule is used for indicating a transmission mode of the first signal, and a synchronization signal in the first SSB and a PBCH in the first SSB are superimposed and transmitted on the same time-frequency resource. In the embodiments of the present application, it is proposed that performance monitoring can be performed on the first SSB on the basis of the first signal and / or the first rule, and compared with a conventional solution in which performance monitoring is not performed on the first SSB, a communication system can perform adjustment in a timely manner on the basis of the performance of the first SSB, thereby increasing the possibility that the terminal device accesses a cell.

Description

Method of wireless communication, terminal device and network device TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, and more particularly, to a method of wireless communication, a terminal device and a network device. BACKGROUND

[0002] In order to improve resource utilization, the synchronization signal in the first synchronization signal and physical broadcast channel block (SSB) and the physical broadcast channel (PBCH) in the first SSB can be superimposed on the same time-frequency resource for transmission. Since the synchronization signal and the PBCH are superimposed on the same time-frequency resource for transmission, significant mutual interference can be introduced. Therefore, this transmission mode requires the receiving end of the first SSB to have high signal processing capability. However, in actual application, the performance of the receiving end receiving the first SSB can not be stable, which can cause the terminal device to fail to access the cell.

[0003] SUMMARY

[0004] The present application provides a method of wireless communication, a terminal device and a network device. The various aspects related to the present application are introduced below.

[0005] In a first aspect, a method of wireless communication is provided, comprising: receiving, by a terminal device, a first signal transmitted by a network device, the first signal and / or a first rule being used for performance monitoring of a first SSB, the first rule being used to indicate a transmission mode of the first signal; wherein a synchronization signal in the first SSB and a PBCH in the first SSB are superimposed on the same time-frequency resource for transmission.

[0006] In a second aspect, a method of wireless communication is provided, comprising: transmitting, by a network device, a first signal to a terminal device, the first signal and / or a first rule being used for performance monitoring of a first SSB, the first rule being used to indicate a transmission mode of the first signal; wherein a synchronization signal in the first SSB and a PBCH in the first SSB are superimposed on the same time-frequency resource for transmission.

[0007] In a third aspect, a terminal device is provided, which comprises: a receiving unit configured to receive a first signal transmitted by a network device, the first signal and / or a first rule being used for performance monitoring on a first SSB, the first rule being used to indicate a transmission mode of the first signal; wherein a synchronization signal in the first SSB and the PBCH in the first SSB are transmitted on the same time-frequency resource.

[0008] In a fourth aspect, a network device is provided, which comprises: a sending unit configured to send a first signal to a terminal device, the first signal and / or a first rule being used for performance monitoring on a first SSB, the first rule being used to indicate a transmission mode of the first signal; wherein a synchronization signal in the first SSB and the PBCH in the first SSB are transmitted on the same time-frequency resource.

[0009] In a fifth aspect, a terminal device is provided, which comprises a processor, a memory and a communication interface, the memory is configured to store one or more computer programs, and the processor is configured to invoke the computer programs in the memory, so that the terminal device performs part or all steps in the method of the first aspect.

[0010] In a sixth aspect, a network device is provided, which comprises a processor, a memory and a transceiver, the memory is configured to store one or more computer programs, and the processor is configured to invoke the computer programs in the memory, so that the network device performs part or all steps in the method of the second aspect.

[0011] In a seventh aspect, a communication system is provided, which comprises the terminal device and / or the network device described above. In another possible design, the system can further comprise other devices interacting with the terminal device or the network device in the solutions provided by the embodiments of the present application.

[0012] In an eighth aspect, a computer-readable storage medium is provided, which stores a computer program, and the computer program causes a communication device (e.g., a terminal device or a network device) to perform part or all steps in the methods of the above aspects.

[0013] In a ninth aspect, a computer program product is provided, which comprises a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a communication device (e.g., a terminal device or a network device) to perform part or all steps in the methods of the above aspects. In some implementations, the computer program product can be a software installation package.

[0014] In a tenth aspect, an embodiment of the present application provides a chip, which comprises a memory and a processor. The processor can call and run a computer program from the memory to implement part or all of the steps described in the method of each of the above aspects.

[0015] In the embodiments of the present application, the performance of the first SSB can be monitored based on the first signal and / or the first rule. Compared with the traditional scheme in which the performance of the first SSB is not monitored, the communication system can be adjusted in time based on the performance of the first SSB, so as to improve the possibility of the terminal device accessing the cell. BRIEF DESCRIPTION OF DRAWINGS

[0016] FIG. 1 is a wireless communication system 100 to which embodiments of the present application are applied.

[0017] FIG. 2 is a schematic diagram of a superimposed pilot.

[0018] FIG. 3 is a schematic diagram of a SIP-SSB to which embodiments of the present application are applied.

[0019] FIG. 4 is a schematic flowchart of a method of wireless communication according to an embodiment of the present application.

[0020] FIGS. 5 to 7 are schematic diagrams of transmission modes of the first SSB and the second SSB according to embodiments of the present application.

[0021] FIG. 8 is a schematic diagram of a plurality of first SSBs transmitted according to a first rule according to an embodiment of the present application.

[0022] FIG. 9 is a schematic diagram of performance monitoring of a first SSB based on a first signal and a first rule according to an embodiment of the present application.

[0023] FIGS. 10 to 13 are schematic diagrams of a performance monitoring process according to embodiments of the present application.

[0024] FIG. 14 is a schematic diagram of a terminal device according to an embodiment of the present application.

[0025] FIG. 15 is a schematic diagram of a network device according to an embodiment of the present application.

[0026] FIG. 16 is a schematic structural diagram of a communication apparatus according to an embodiment of the present application. DETAILED DESCRIPTION

[0027] The technical solutions in the present application will be described below with reference to the accompanying drawings. In order to facilitate understanding, the communication system to which embodiments of the present application are applied and related terms involved will be introduced first with reference to FIGS. 1 to 3.

[0028] FIG. 1 is a wireless communication system 100 to which embodiments of the present application are applied. The wireless communication system 100 can include a network device 110 and a terminal device 120. The network device 110 can be a device that communicates with the terminal device 120. The network device 110 can provide communication coverage for a specific geographic area and can communicate with the terminal device 120 located in the coverage area.

[0029] FIG. 1 exemplarily shows one network device and two terminals. Alternatively, the wireless communication system 100 can include a plurality of network devices and each network device can include other numbers of terminal devices within the coverage range, which are not limited by embodiments of the present application.

[0030] Alternatively, the wireless communication system 100 can further include a network controller, a mobile management entity, and other network entities, which are not limited by embodiments of the present application.

[0031] It should be understood that the technical solutions of embodiments of the present application can be applied to various communication systems, for example, a 5th generation (5G) system or new radio (NR), a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD), and the like. The technical solutions provided by the present application can also be applied to future communication systems, such as a 6th generation mobile communication system, a satellite communication system, and the like.

[0032] The terminal device in the embodiments of the present application can also be referred to as a user equipment (UE), an access terminal, a user unit, a user station, a mobile station, a mobile station (MS), a mobile terminal (MT), a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent or a user apparatus. The terminal device in the embodiments of the present application can refer to a device that provides voice and / or data connectivity for a user, and can be used to connect people, things and machines, such as handheld devices with wireless connection functions, vehicle-mounted devices, etc. The terminal device in the embodiments of the present application can be a mobile phone, a tablet computer (Pad), a notebook computer, a palm computer, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote medical surgery, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc. Optionally, the UE can be used to act as a base station. For example, the UE can act as a scheduling entity, which provides sidelink signals between UEs in V2X or D2D, etc. For example, a cellular phone and a car communicate with each other using sidelink signals. The cellular phone and the smart home device communicate with each other without relaying the communication signals through the base station.

[0033] The network device in the embodiments of the present application can be a device for communicating with a terminal device, which can also be referred to as an access network device or a radio access network device, such as a network device, which can be a base station. The network device in the embodiments of the present application can refer to a radio access network (RAN) node (or device) that accesses a terminal device to a wireless network. The base station can broadly cover various names in the following or be replaced by the following names, such as: Node B (NodeB), evolved Node B (eNB), next generation Node B (gNB), relay station, transmitting and receiving point (TRP), transmitting point (TP), master station MeNB, auxiliary station SeNB, multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. The base station can be a macro base station, a micro base station, a relay node, a donor node or the like, or a combination thereof. The base station can also refer to a communication module, modem or chip for being disposed in the foregoing devices or apparatuses. The base station can also be a mobile switching center and a device that undertakes a base station function in device-to-device (D2D), vehicle-to-everything (V2X), machine-to-machine (M2M) communication, a network side device in a 6G network, a device that undertakes a base station function in a future communication system, etc. The base station can support networks of the same or different access technologies. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network device.

[0034] The base station can be fixed or mobile. For example, a helicopter or a drone can be configured to act as a mobile base station, and one or more cells can move according to the location of the mobile base station. In other examples, the helicopter or the drone can be configured to act as a device that communicates with another base station.

[0035] In some deployments, the network device in the embodiments of the present application can refer to a CU or a DU, or the network device includes a CU and a DU. The gNB can also include an AAU.

[0036] The network device and the terminal device can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; can also be deployed on water surface; can also be deployed on aircraft, balloons and satellites in the air. The scenarios in which the network device and the terminal device are located are not limited in the embodiments of the present application.

[0037] It should be understood that all or part of the functions of the communication device in the present application can also be implemented by software functions running on hardware, or by virtualized functions instantiated on a platform (such as a cloud platform).

[0038] Initial access

[0039] In some communication systems (for example, 5G NR or 4G LTE), the downlink initial access procedure is a key step when the terminal device first connects to the communication network. The initial access procedure involves frequency sweeping, receiving of synchronization signals, obtaining of broadcast messages, etc. The frequency sweeping refers to that the terminal device needs to find a frequency point with an initial access signal in the frequency range in which the potential cell can be deployed. Here, the search for the frequency point is not completely blind, and a series of potential frequency points that can be used for synchronization signal transmission can be predefined in the standard. Accordingly, the terminal device can narrow the search range based on the predetermined related frequency points. The downlink initial access signal (for example, SSB) can include a primary synchronization signal (PSS), a secondary synchronization signal (SSS) and a PBCH. Accordingly, the terminal device can achieve time and frequency synchronization by receiving the PSS and the SSS, and obtain a master information block (MIB) by demodulating the PBCH. These information is crucial for the terminal device to understand the network and perform subsequent communication.

[0040] Based on the foregoing introduction, it can be known that the key steps of the downlink initial access are all implemented based on the SSB. In the NR standard, the SSB occupies 4 orthogonal frequency division multiplexing (OFDM) symbols (hereinafter distinguished by symbols 0-3) in the time domain and 240 subcarriers in the frequency domain. Among them, the PSS is located in the middle 127 subcarriers of symbol 0, and the SSS is located in the middle 127 subcarriers of symbol 2. A maximum of 1008 physical cell identifiers (PCIs) are supported in NR, and the number of physical cell identifiers supported by NR is twice that of LTE. Moreover, the 1008 physical cell identifiers are all distinguished by different PSS and SSS sequences.

[0041] The PBCH is located in symbol 1, symbol 3, and occupies part of symbol 2. To assist the demodulation of the PBCH, the demodulation reference signal (DMRS) can be located in the middle of the PBCH, and the interval between every two DMRS signals is 4 subcarriers.

[0042] In addition, in order to cope with the terminal device access demand that occurs from time to time, the SSB can be continuously sent periodically in the communication system. The period of the SSB in NR can be configured in the system information block (SIB), and the potential period values may, for example, include 5 ms, 10 ms, 20 ms, 40 ms, 80 ms, 160 ms, etc.

[0043] Superimposed pilot (SIP)

[0044] In known communication systems (e.g., 5G NR or 4G LTE), pilot signals are all transmitted on dedicated time-frequency resources, i.e., the pilots and data are orthogonalized by time-frequency resources, and different pilots are orthogonalized by time-frequency resources. With the development of communication systems, system designers have found that if the system is to work more robustly in more scenarios and have more functions (e.g., work in a wider frequency band, have the ability to implement positioning and sensing, etc.), more types of pilots (e.g., channel state information reference signals (CSI-RS), SSB, DMRS, phase tracking reference signals (PTRS), sounding reference signals (SRS), positioning reference signals (PRS), etc.) need to be added to the system. However, with the increase in the number of pilot types and the amount of time-frequency resources required to transmit pilots, the amount of time-frequency resources available for transmitting data in the wireless communication system decreases, which has a non-negligible constraint on the communication efficiency that the communication system can achieve.

[0045] Therefore, to address the above problems, SIP is introduced into the communication system, which helps to improve the communication efficiency of the communication system. In some implementations, superimposed pilots can be understood as transmitting data and pilots simultaneously in a non-orthogonal manner on the same time-frequency resources, as shown in FIG. 2.

[0046] For the receiving end, the difference between the pilot signal and the data signal (e.g., the difference in power and / or form between the pilot signal and the data signal, where the form may, for example, include a specific pilot signal sequence or modulation method) can be used to effectively distinguish between the two by using traditional algorithms or models, and ultimately solve the channel information and data. The introduction of superimposed pilots has to some extent led to an increase in the complexity of the receiver, but the improvement in communication resource utilization brought about by the introduction of SIP cannot be ignored.

[0047] In some scenarios, the introduction of the superposed pilot helps to improve the flexibility of power allocation on time-frequency resources for pilot signals and data signals. For superposed pilots, the optimal power allocation scheme is often affected by many factors. For example, for different numbers of multiple-input multiple-output (MIMO) transmission layers, for different modulation modes of data signals, for different code rates of channel coding, for different transmission bandwidths of signals, and even for different channel environments in which the communication device is located, these factors will affect the proportion of the optimal power of the pilot in the total power corresponding to the superposed pilot. Compared with the traditional orthogonal pilot that is often transmitted at a stable or even constant power, the power of the superposed pilot can be flexibly adjusted based on the above factors.

[0048] Initial access based on superposed pilot

[0049] Unlike LTE, most reference signals in NR are designed to be UE-specific rather than cell-specific, so there is no need to be transmitted in a periodic manner. Therefore, in the NR system, the SSB is one of the few periodically transmitted reference signals, and its occupation of wireless resources is long and uninterrupted. Therefore, in order to improve the utilization rate of wireless resources and not affect the delay required for the terminal device to perform initial access, superposed pilots can be applied to the design of SSB. The SSB designed based on the superposed pilot can also be referred to as a "SIP-SSB" (for example, the first SSB introduced below). Referring to FIG. 3, for the SIP-SSB, the PSS / SSS in the SIP-SSB can be superposed with the PBCH in the SIP-SSB and occupy the same time-frequency resources for transmission, or in other words, the PSS / SSS in the SIP-SSB can occupy the same time-frequency resources with the PBCH in the SIP-SSB in a non-orthogonal manner for transmission.

[0050] In some implementations, the PSS / SSS in the SIP-SSB can be used for both synchronization and channel estimation, so that the PSS / SSS in the SIP-SSB can replace the original DMRS to complete the demodulation of the PBCH.

[0051] On the other hand, the introduction of the SIP-SSB can cause complexity of receiving signals at a receiving end (e.g., a terminal device). A receiver of the receiving end needs to detect and demodulate the superimposed PSS / SSS and PBCH respectively. Therefore, an artificial intelligence (AI) receiver is introduced to process the SIP SSB, which is verified to achieve good synchronization and PBCH demodulation effects. By using the powerful nonlinear processing capability of AI, the mutual interference between PSS / SSS and PBCH can be greatly alleviated, and the synchronization signal can be used to assist the demodulation of PBCH.

[0052] As described above, in order to improve resource utilization, the synchronization signal (e.g., PSS and / or SSS) in the first SSB (e.g., the SIP-SSB described above) and the PBCH in the first SSB can be superimposed and transmitted on the same time-frequency resource. Since the synchronization signal and the PBCH are superimposed and transmitted on the same time-frequency resource, significant mutual interference can be introduced. Therefore, this transmission mode requires the receiving end of the first SSB to have high signal processing capability. However, in actual application, the performance of the receiving end receiving the first SSB can not be stable, which can cause the terminal device to fail to perform cell access based on the first SSB.

[0053] Taking the receiving end receiving the first SSB based on the first model (e.g., an AI model or a machine learning model) as an example, the performance of receiving the first SSB by using the first model is closely related to the training data used when training the model. For example, if the actual communication environment for transmitting the first SSB is similar to the communication environment corresponding to the training data, the performance of receiving the first SSB by using the first model is high. Conversely, if the actual communication environment for transmitting the first SSB is quite different from the communication environment corresponding to the training data, the performance of receiving the first SSB by using the first model is poor, which causes the terminal device to fail to perform cell access based on the first SSB.

[0054] Therefore, in view of the above problems, the embodiments of the present application propose a scheme for monitoring the performance of the first SSB, which is helpful for monitoring the performance of the first SSB. The method of wireless communication of the embodiments of the present application is introduced below in combination with FIG. 4. The method shown in FIG. 4 includes step S410.

[0055] In step S410, the network device sends a first signal to a terminal device.

[0056] In some implementations, the first signal and / or the first rule are used for performance monitoring on the first SSB, where the performance monitoring on the first SSB can include one or more of the following: performance monitoring on synchronization performance of a synchronization signal in the first SSB; performance monitoring on demodulation performance of a PBCH in the first SSB; performance monitoring on detection performance of a synchronization signal sequence in the first SSB.

[0057] In some implementations, if the performance monitoring is on the synchronization performance of the synchronization signal in the first SSB, correspondingly, the performance monitoring indicator can include synchronization accuracy, for example, a deviation between a notional time of arrival of the first SSB and an actually detected time of arrival of the first SSB, which will be described in detail below.

[0058] In some implementations, if the performance monitoring is on the demodulation performance of the PBCH in the first SSB, correspondingly, the performance monitoring indicator can include a block error rate (BLER) of receiving the PBCH and / or a bit error rate (BER) of receiving the PBCH.

[0059] In some implementations, if the performance monitoring is on the detection performance of the synchronization signal sequence in the first SSB, correspondingly, the performance monitoring indicator can include a detection accuracy rate, which is used to indicate a probability of detecting correct target information (e.g., PCI) based on the synchronization signal sequence.

[0060] In some implementations, the first signal and / or the first rule are used for performance monitoring on the first SSB, which can be replaced by the first signal and / or the first rule being used for monitoring reception performance of the first SSB, or in other words, the first signal and / or the first rule being used for monitoring performance of initial access based on the first SSB. The following will introduce the schemes of performance monitoring on the first SSB based on the first signal or the first rule in combination with Embodiment 1 and Embodiment 2 respectively.

[0061] In some implementations, the first rule can be associated with the first signal, correspondingly, the first signal and / or the first rule are used for performance monitoring on the first SSB, therefore, the first signal is also called a test signal.

[0062] Embodiment 1: The first signal is used for performance monitoring on the first SSB.

[0063] In some implementations, a sequence corresponding to the synchronization signal in the first SSB (also referred to as a “synchronization signal sequence”) is the same as a sequence corresponding to the synchronization signal in the second SSB (also referred to as a “synchronization signal sequence”).

[0064] In some implementations, the information carried by the PBCH in the first SSB is the same as the information carried by the PBCH in the second SSB. Of course, in the embodiments of the present application, the information carried by the PBCH in the first SSB can be different from the information carried by the PBCH in the second SSB, wherein the information carried by the PBCH in the second SSB can be used for performance monitoring of the first SSB, which will be described in detail below in connection with the scheme of performance monitoring.

[0065] In some implementations, the first signal includes the second SSB, wherein the synchronization signal (e.g., SSS and / or PSS) in the second SSB and the PBCH in the second SSB are not transmitted in an overlapped manner through the same time-frequency resources, and thus the second SSB can also be referred to as a "non-SIP-SSB". Alternatively, the synchronization signal in the second SSB and the PBCH in the second SSB are respectively transmitted through different time-frequency resources. For example, the resources occupied by the synchronization signal in the second SSB and the resources occupied by the PBCH in the second SSB do not overlap in the time domain.

[0066] In some implementations, the second SSB can be an SSB defined in the NR protocol. Of course, in the embodiments of the present application, the second SSB can be a variant based on the SSB defined in the NR protocol.

[0067] In some implementations, the second SSB can be transmitted in a bundled manner with the first SSB in order to monitor the performance of the first SSB. Wherein the bundled transmission can include, for example, that the first SSB and the second SSB can be transmitted in a time division multiplexing manner and / or a frequency division multiplexing manner. Accordingly, for the bundled first SSB and the second SSB, the second SSB is used for performance monitoring of the first SSB. The transmission manner of the first SSB and the second SSB in the embodiments of the present application will be described below in connection with FIGS. 5 to 7.

[0068] Referring to FIG. 5, the first SSBs can include multiple first SSBs, i.e., SSB1-1, SSB1-2, SSB1-3, and SSB1-4. The second SSBs can include multiple second SSBs, i.e., SSB2-1, SSB2-2, SSB2-3, and SSB2-4. Among them, SSB1-1 and SSB2-1 are transmitted in a time division multiplexing manner, i.e., SSB1-1 and SSB2-1 occupy the same frequency domain resource, and SSB1-1 and SSB2-1 are spaced apart in time domain by a time domain offset 1. SSB1-2 and SSB2-2 are transmitted in a time division multiplexing manner, i.e., SSB1-2 and SSB2-2 occupy the same frequency domain resource, and SSB1-2 and SSB2-2 are spaced apart in time domain by a time domain offset 2. SSB1-3 and SSB2-3 are transmitted in a time division multiplexing manner, i.e., SSB1-3 and SSB2-3 occupy the same frequency domain resource, and SSB1-3 and SSB2-3 are spaced apart in time domain by a time domain offset 3. SSB1-4 and SSB2-4 are transmitted in a time division multiplexing manner, i.e., SSB1-4 and SSB2-4 occupy the same frequency domain resource, and SSB1-4 and SSB2-4 are spaced apart in time domain by a time domain offset 4.

[0069] In the embodiments of the present application, the time domain offsets 1-4 are not limited. In some implementations, all of the time domain offsets 1-4 can be the same. In other implementations, some or all of the time domain offsets 1-4 can be different. In addition, the time domain offsets 1-4 can be determined based on one or more of the following information: pre-defined information, pre-configured information, or configuration information sent by a network device.

[0070] Referring to FIG. 6, the first SSBs can include multiple first SSBs, i.e., SSB1-1, SSB1-2, SSB1-3, and SSB1-4. The second SSBs can include multiple second SSBs, i.e., SSB2-1, SSB2-2, SSB2-3, and SSB2-4. Among them, SSB1-1 and SSB2-1 are transmitted in a frequency division multiplexing manner, i.e., SSB1-1 and SSB2-1 occupy the same time domain resource, and SSB1-1 and SSB2-1 are spaced apart by a frequency domain offset 1 in the frequency domain. SSB1-2 and SSB2-2 are transmitted in a frequency division multiplexing manner, i.e., SSB1-2 and SSB2-2 occupy the same time domain resource, and SSB1-2 and SSB2-2 are spaced apart by a frequency domain offset 2 in the frequency domain. SSB1-3 and SSB2-3 are transmitted in a frequency division multiplexing manner, i.e., SSB1-3 and SSB2-3 occupy the same time domain resource, and SSB1-3 and SSB2-3 are spaced apart by a frequency domain offset 3 in the frequency domain. SSB1-4 and SSB2-4 are transmitted in a frequency division multiplexing manner, i.e., SSB1-4 and SSB2-4 occupy the same time domain resource, and SSB1-4 and SSB2-4 are spaced apart by a frequency domain offset 4 in the frequency domain.

[0071] In the embodiments of the present application, the frequency domain offsets 1-4 are not limited. In some implementations, all of the frequency domain offsets 1-4 can be the same. In other implementations, some or all of the frequency domain offsets 1-4 can be different. In addition, the frequency domain offsets 1-4 can be determined based on one or more of the following information: pre-defined information, pre-configured information, or configuration information sent by a network device.

[0072] Referring to FIG. 7, the first SSBs can include multiple first SSBs, i.e., SSB1-1, SSB1-2, SSB1-3, and SSB1-4. The second SSBs can include multiple second SSBs, i.e., SSB2-1, SSB2-2, SSB2-3, and SSB2-4. Among them, SSB1-1 and SSB2-1 are transmitted in a frequency division multiplexing and time division multiplexing manner, i.e., SSB1-1 and SSB2-1 are spaced apart in the time domain by a time domain offset 1, and SSB1-1 and SSB2-1 are spaced apart in the frequency domain by a frequency domain offset 1. SSB1-2 and SSB2-2 are transmitted in a frequency division multiplexing and time division multiplexing manner, i.e., SSB1-2 and SSB2-2 are spaced apart in the time domain by a time domain offset 2, and SSB1-2 and SSB2-2 are spaced apart in the frequency domain by a frequency domain offset 2. SSB1-3 and SSB2-3 are transmitted in a frequency division multiplexing and time division multiplexing manner, i.e., SSB1-3 and SSB2-3 are spaced apart in the time domain by a time domain offset 3, and SSB1-3 and SSB2-3 are spaced apart in the frequency domain by a frequency domain offset 3. SSB1-4 and SSB2-4 are transmitted in a frequency division multiplexing and time division multiplexing manner, i.e., SSB1-4 and SSB2-4 are spaced apart in the time domain by a time domain offset 4, and SSB1-4 and SSB2-4 are spaced apart in the frequency domain by a frequency domain offset 4.

[0073] In the embodiments of the present application, the frequency domain offsets 1-4 are not limited. In some implementations, all of the frequency domain offsets 1-4 can be the same. In other implementations, some or all of the frequency domain offsets 1-4 can be different. In addition, the frequency domain offsets 1-4 can be determined based on one or more of the following information: pre-defined information, pre-configured information, or configuration information sent by a network device.

[0074] In addition, in the embodiments of the present application, the time domain offsets 1-4 are not limited. In some implementations, all of the time domain offsets 1-4 can be the same. In other implementations, some or all of the time domain offsets 1-4 can be different. In addition, the time domain offsets 1-4 can be determined based on one or more of the following information: pre-defined information, pre-configured information, or configuration information sent by a network device.

[0075] The above describes the transmission manner of the first SSB and the second SSB in the embodiments of the present application in conjunction with FIGS. 5-7, and the following describes a scheme of monitoring the performance of the first SSB based on the second SSB. Generally, terminal devices commonly have the ability to receive the second SSB, and therefore, in the embodiments of the present application, the terminal device can monitor the performance of receiving the first SSB through the received results of receiving the second SSB.

[0076] As described above, the performance monitoring on the first SSB can include performance monitoring on synchronization performance of the first SSB, which is based on the estimated receiving time of the first SSB and the receiving time of the first SSB, or the monitoring result of the performance monitoring is determined based on the estimated receiving time of the first SSB and the receiving time of the first SSB.

[0077] In some implementations, the closer the receiving time of the first SSB is to the estimated receiving time of the first SSB (e.g., the receiving time of the first SSB is less than or equal to the estimated receiving time of the first SSB by a threshold), the higher the synchronization performance of the first SSB is. In other implementations, the farther the receiving time of the first SSB is from the estimated receiving time of the first SSB (e.g., the receiving time of the first SSB is greater than or equal to the estimated receiving time of the first SSB by a threshold), the worse the synchronization performance of the first SSB is. The threshold can be determined based on one or more of the following: predefinition, pre-configuration, or network device configuration.

[0078] In some implementations, the receiving time of the first SSB can be understood as the time when the terminal device actually receives the first SSB, and thus the receiving time of the first SSB can also be referred to as the actual receiving time of the first SSB.

[0079] In some implementations, the estimated receiving time of the first SSB (also referred to as the ideal receiving time of the first SSB) can be determined based on the receiving time of the second SSB, the first time interval between the transmission time of the first SSB and the transmission time of the second SSB. The receiving time of the second SSB can be understood as the time when the terminal device actually receives the second SSB, and thus the receiving time of the second SSB can also be referred to as the actual receiving time of the second SSB.

[0080] In the embodiments of the present application, the configuration manner of the first time interval is not limited. In some implementations, the first time interval can be determined based on one or more of the following: predefinition, pre-configuration, or network device configuration. For example, the network device can configure the first time interval by sending configuration information to the terminal device, and the configuration information can be carried in one or more of the following: broadcast message, RRC, MAC CE, DCI. Of course, in the embodiments of the present application, the configuration information can be carried in the second SSB. For example, the configuration information can be carried in the PBCH of the second SSB.

[0081] For example, the first SSB is a SIP SSB, and the second SSB is a Non-SIP SSB, where the SIP SSB is bound to the Non-SIP SSB, and a first time interval between a transmission time of the Non-SIP SSB and a transmission time of the SIP SSB is t1. Accordingly, when the terminal device detects the Non-SIP SSB, the terminal device knows the actual reception time t0 of the Non-SIP SSB, and then the terminal device can determine, based on the first time interval t1 and the actual reception time t0 of the Non-SIP SSB, an estimated reception time of the SIP SSB as t0+t1. Then, the terminal device can compare the estimated reception time t0+t1 of the SIP SSB with the actual reception time of the SIP SSB to monitor the synchronization performance of the SIP SSB.

[0082] As described above, the performance monitoring on the first SSB can include performance monitoring on a performance of detecting a synchronization signal sequence in the first SSB (also referred to as “detection performance”), where the performance monitoring is based on target information (also referred to as ideal target information) associated with the second SSB and target information indicated by the synchronization signal sequence in the first SSB, or a monitoring result of the performance monitoring is determined based on the target information associated with the second SSB (hereinafter referred to as “target information 2”) and the target information indicated by the synchronization signal sequence in the first SSB (hereinafter referred to as “target information 1”).

[0083] In some implementations, the target information 2 can be regarded as a reference value (or a correct value), and accordingly, if the detected target information 1 is the same as the target information 2, it indicates that the monitoring result of the performance monitoring on the detection performance is better. In other implementations, if the detected target information 1 is different from the target information 2, it indicates that the monitoring result of the performance monitoring on the detection performance is worse.

[0084] In some implementations, the target information indicated by the synchronization signal sequence in the first SSB can be understood as target information obtained by detecting the synchronization signal sequence in the first SSB.

[0085] In the embodiments of the present application, the target information is not specifically limited. In some implementations, the target information can be a cell identifier of a cell to which the terminal device is to access, or the target information can be a cell identifier of a cell in which the first SSB is located. The cell identifier can be, for example, a PCI. Of course, in the embodiments of the present application, the target information can be used by the terminal device to perform the performance monitoring on the detection performance, and the terminal device does not really perform cell access based on the target information, and in this case, the target information can not really indicate the above-mentioned cell, and the target information can be arbitrarily set.

[0086] In some scenarios, in order to improve the accuracy of performance monitoring on the detection performance, the target information can be dynamically changed. That is to say, in the multi-round transmission of the first SSB and the second SSB, the target information associated with the first SSB of the multi-round transmission is different, and the target information associated with the second SSB of the multi-round transmission is different. Or, assuming that the network device sends multiple groups of SSBs to the terminal device, each group of SSBs includes a first SSB and a second SSB. The target information associated with each group of SSBs is dynamically changed, or the target information associated with each group of SSBs is different. Wherein, the target information associated with each group of SSBs is understood as the information for performance monitoring on the detection performance of the synchronization signal sequence of the first SSB in the group of SSBs, or the target information associated with the second SSB in the group of SSBs.

[0087] Taking the target information as the PCI for example, the first group of SSBs includes Non-SIP SSB1 and SIP SSB1, and the value of the PCI associated with the first group of SSBs is 0. The second group of SSBs includes Non-SIP SSB2 and SIP SSB2, and the value of the PCI associated with the second group of SSBs is 1. The third group of SSBs includes Non-SIP SSB3 and SIP SSB3, and the value of the PCI associated with the third group of SSBs is 2. Correspondingly, the terminal device can perform performance monitoring on the detection performance based on the first group of SSBs, the second group of SSBs and the third group of SSBs.

[0088] Of course, in the embodiments of the present application, the target information associated with the SSB (including the first SSB and the second SSB) in each round of transmission in the multi-round transmission can be the same, so as to simplify the complexity of performance monitoring on the detection performance.

[0089] In some implementations, the target information associated with the second SSB includes one or more of the following: target information indicated by the synchronization signal sequence in the second SSB; target information indicated by the PBCH in the second SSB.

[0090] In some implementations, the target information indicated by the synchronization signal sequence in the second SSB can be replaced by obtaining the target information by detecting the synchronization signal sequence in the second SSB.

[0091] In some implementations, the target information indicated by the PBCH in the second SSB may, for example, include the target information carried by the PBCH in the second SSB.

[0092] As described above, the performance monitoring on the first SSB can include performance monitoring on demodulation performance of the PBCH in the first SSB, which is determined based on a target bit stream (also referred to as an “ideal bit stream”) and a bit stream obtained by demodulating the PBCH in the first SSB (simply referred to as a “demodulated bit stream”).

[0093] In some implementations, the target bit stream can be understood as a reference bit stream for monitoring the demodulation performance, and accordingly, if the difference between the demodulated bit stream and the target bit stream is large, it indicates that the monitoring result obtained by performance monitoring on the demodulation performance is poor. Conversely, if the demodulated bit stream is similar or identical to the target bit stream, it indicates that the monitoring result obtained by performance monitoring on the demodulation performance is good.

[0094] In some implementations, the difference between the demodulated bit stream and the target bit stream can be measured by a bit error ratio (BER). For example, if the BER is greater than a threshold, it indicates that the difference between the demodulated bit stream and the target bit stream is large. Conversely, if the BER is less than the threshold, it indicates that the difference between the demodulated bit stream and the target bit stream is small.

[0095] In some implementations, the target bit stream includes one or more of the following: a bit stream obtained by demodulating the PBCH in the second SSB; a predefined bit stream; a bit stream indicated by the network device.

[0096] In other implementations, the above-mentioned performance monitoring on the demodulation performance of the PBCH in the first SSB can be based on the BLER obtained by decoding the channel transmitting the first SSB. Or in other words, the monitoring result of the performance monitoring can be determined based on the BLER.

[0097] In some implementations, if the BLER of receiving the first SSB is greater than a threshold, it indicates that the demodulation performance is poor. Conversely, if the BLER of receiving the first SSB is less than or equal to the threshold, it indicates that the demodulation performance is good.

[0098] In some implementations, the BLER can be determined based on CRC checking in the process of decoding the channel transmitting the first SSB.

[0099] Generally, the PBCH in the conventional SSB is used to carry MIB information (e.g., system frame number, subcarrier spacing, half-frame indication, etc.). However, in the embodiments of the present application, the target bit stream carried by the PBCH in the second SSB is used for performance monitoring on the first SSB, and therefore, the target bit stream carried by the PBCH in the second SSB can not be used to indicate the MIB, or in other words, the target bit stream carried by the PBCH in the second SSB can not strictly correspond to the MIB, which helps to improve the flexibility of transmitting the second SSB.

[0100] Embodiment 2: The first rule is used for performance monitoring on the first SSB.

[0101] In some implementations, the first signal includes the first SSB, and the first rule is used to indicate a transmission manner of a plurality of first SSBs to which the first SSB belongs. That is, the terminal device can determine whether the reception result of the plurality of first SSBs conforms to the first rule based on the plurality of first SSBs transmitted according to the first rule, so as to perform performance monitoring on the first SSB.

[0102] In some implementations, the first rule is used to indicate one or more of the following: a second time interval between each two of the plurality of first SSBs; information indicated by a PBCH in each of the plurality of first SSBs; and target information associated with a synchronization signal sequence in each of the plurality of first SSBs. The target information can be understood with reference to the related description in Embodiment 1.

[0103] Taking the first rule used to indicate the second time interval as an example, in some implementations, the first rule can indicate a value of one or more second time intervals corresponding to the plurality of first SSBs. In other implementations, the first rule can indicate a change rule of the value of the one or more second time intervals corresponding to the plurality of first SSBs, for example, the change rule can include that the plurality of second time intervals are equal, or the plurality of second time intervals change periodically, and the like.

[0104] In some implementations, the two first SSBs can be two first SSBs adjacent in time domain in the plurality of first SSBs. Of course, in the embodiments of the present application, the two first SSBs can be a reference SSB and any first SSB in the plurality of first SSBs, where the reference SSB can be adjacent to the first SSB in time domain, or the reference SSB can be non-adjacent to the first SSB in time domain.

[0105] Taking the first rule used to indicate the information indicated by the PBCH in each of the plurality of first SSBs as an example, in some implementations, the first rule can indicate specific content of the information indicated by the PBCH in each of the plurality of first SSBs. In other implementations, the first rule can indicate a change rule of the information indicated by the PBCH in each of the plurality of first SSBs, for example, the change rule can include that the information indicated by the PBCH in each of the plurality of first SSBs is the same, or the bit value corresponding to the information indicated by the PBCH in each of the plurality of first SSBs increases, and the like.

[0106] For example, in some implementations, the first rule can indicate the specific content of the target information indicated by the synchronization signal sequence in each of the plurality of first SSBs. In other implementations, the first rule can indicate a change rule of the target information indicated by the synchronization signal sequence in each of the plurality of first SSBs, where the change rule may, for example, include that the target information indicated by the synchronization signal sequence in each of the plurality of first SSBs is the same, or the value of the target information indicated by the synchronization signal sequence in each of the plurality of first SSBs is incrementally changed, and the like.

[0107] For example, in some implementations, the first rule can indicate the specific content of the target information indicated by the synchronization signal sequence in each of the plurality of first SSBs. In other implementations, the first rule can indicate a change rule of the target information indicated by the synchronization signal sequence in each of the plurality of first SSBs, where the change rule may, for example, include that the target information indicated by the synchronization signal sequence in each of the plurality of first SSBs is the same, or the value of the target information indicated by the synchronization signal sequence in each of the plurality of first SSBs is incrementally changed, and the like.

[0108] In the embodiments of the present application, the plurality of first SSBs transmitted according to the first rule will be described below in conjunction with FIG. 8. For example, in the case of the first SSB being a SIP SSB, referring to FIG. 8, the first rule indicates that the second time interval between every two adjacent SIP SSBs in the plurality of SIP SSBs is t1, t2, …, t n In addition, the first rule indicates that the target information indicated by the synchronization signal sequence of each SIP SSB in the plurality of SIP SSBs is x1, x2, x3, …, x n , x n+1 , where n is an integer greater than or equal to 0.

[0109] In the embodiments of the present application, the configuration manner of the first rule is not limited. In some implementations, the first rule can be determined based on one or more of the following manners: predefinition; pre-configuration or network device configuration. For example, in the case of determining the first rule based on network device configuration, the network device can configure the first rule by sending configuration information to the terminal device, where the configuration information can be carried in one or more of the following: broadcast message, radio resource control (RRC), media access control control element (MAC CE), downlink control information (DCI).

[0110] The first rule of the embodiments of the present application is introduced above, and the scheme of performing performance monitoring on the first SSB based on the first rule is introduced below.

[0111] As described above, the performance monitoring on the first SSB can include performance monitoring on synchronization performance of the first SSB, the two first SSBs including the reference SSB and the first SSB, the performance monitoring being performed based on the estimated receiving time of the first SSB (also referred to as the ideal receiving time of the first SSB) and the receiving time of the first SSB, or in other words, the monitoring result of the performance monitoring being determined based on the estimated receiving time of the first SSB and the receiving time of the first SSB. Wherein, the introduction of the reference SSB and the first SSB can be referred to the above.

[0112] In some implementations, the estimated receiving time of the first SSB is determined based on the receiving time of the reference SSB and a second time interval between the transmission time of the first SSB and the transmission time of the reference SSB, wherein the second time interval can be determined based on the first rule. In addition, the receiving time of the reference SSB can be understood as the time when the terminal device actually receives the reference SSB, and therefore, the receiving time of the reference SSB can also be referred to as the actual receiving time of the reference SSB.

[0113] In some implementations, the receiving time of the first SSB can be understood as the time when the terminal device actually receives the first SSB, and therefore, the receiving time of the first SSB can also be referred to as the actual receiving time of the first SSB.

[0114] In some implementations, the closer the receiving time of the first SSB is to the estimated receiving time of the first SSB (for example, the receiving time of the first SSB and the estimated receiving time of the first SSB are less than or equal to a threshold value), the higher the synchronization performance of the first SSB is. In other implementations, the farther the receiving time of the first SSB is from the estimated receiving time of the first SSB (for example, the receiving time of the first SSB and the estimated receiving time of the first SSB are greater than or equal to a threshold value), the worse the synchronization performance of the first SSB is. Wherein, the above-mentioned threshold value can be determined based on one or more of the following ways: predefinition, pre-configuration or network device configuration.

[0115] For example, continuing to refer to FIG. 8, assuming that the second time interval t1, t2, …, t nThe value of the second time interval is a constant value 5 ms. Accordingly, the terminal device can continuously receive multiple SIP SSBs, and compare the time interval between the received multiple SIP SSBs with the second time interval indicated by the first rule, so as to determine the synchronization performance of the SIP SSBs (for example, the synchronization error of the SIP SSBs can be determined based on the comparison of the time interval between the multiple SIP SSBs with the second time interval indicated by the first rule, and the synchronization performance is determined through the synchronization error).

[0116] For another example, continuing to refer to FIG. 8, it is assumed that the second time interval t1, t2, …, t6 indicated by the first rule is 1 ms, 2 ms, 3 ms, 1 ms, 2 ms, 3 ms, and 1 ms, respectively. Accordingly, the terminal device can continuously receive multiple SIP SSBs, and compare the time interval between the received multiple SIP SSBs with the second time interval indicated by the first rule, so as to determine the synchronization performance of the SIP SSBs (for example, the synchronization error of the SIP SSBs can be determined based on the comparison of the time interval between the multiple SIP SSBs with the second time interval indicated by the first rule, and the synchronization performance is determined through the synchronization error). n The value of the second time interval is a constant value 5 ms. Accordingly, the terminal device can continuously receive multiple SIP SSBs, and compare the time interval between the received multiple SIP SSBs with the second time interval indicated by the first rule, so as to determine the synchronization performance of the SIP SSBs (for example, the synchronization error of the SIP SSBs can be determined based on the comparison of the time interval between the multiple SIP SSBs with the second time interval indicated by the first rule, and the synchronization performance is determined through the synchronization error).

[0117] As described above, the performance monitoring on the first SSB includes performance monitoring on the performance of detecting the target information indicated by the synchronization signal sequence in the first SSB (also referred to as “detection performance”), which is based on the target information (also referred to as the actually detected target information) obtained by detecting the synchronization signal sequence in each of the multiple first SSBs and the target information indicated by the first rule. In other words, the monitoring result of the performance monitoring is determined based on the actually detected target information and the target information indicated by the first rule.

[0118] In some implementations, the target information indicated by the first rule can be regarded as a reference value (or a correct value), and accordingly, if the actually detected target information is the same as the target information indicated by the first rule, it means that the monitoring result of the performance monitoring on the detection performance is better. In other implementations, if the actually detected target information is different from the target information indicated by the first rule, it means that the monitoring result of the performance monitoring on the detection performance is worse.

[0119] In the embodiments of the present application, the target information is not specifically limited. In some implementations, the target information can be a cell identifier of a cell to which the terminal device is ready to access, or the target information can be a cell identifier of a cell in which the first SSB is located. The cell identifier can be, for example, a PCI. Of course, in the embodiments of the present application, the target information can be used for the terminal device to perform performance monitoring on the detection performance, and the cell access is not really based on the target information, in which case the target information can not really indicate the above-mentioned cell, and the target information can be arbitrarily set.

[0120] Taking the target information as a PCI as an example, continuing to refer to FIG. 8, it is assumed that the value of the target information indicated by the first rule increases and periodically changes according to 0-1007, that is, x1-x1007. n+1 The value of x is 0, 1, 2, …, 1007, …, 0, 1, 2, …, 1007. Correspondingly, the terminal device can receive a plurality of SIP SSBs and monitor the synchronization signal sequence in the plurality of SIP SSBs to obtain the PCIs corresponding to the plurality of SIP SSBs, and then the terminal device can compare the detected PCIs corresponding to the plurality of SIP SSBs with the values of the PCIs indicated by the first rule, so as to determine the accuracy rate of the terminal device in detecting the PCIs.

[0121] As described above, the performance monitoring on the first SSB can include performance monitoring on the demodulation performance of the PBCH in the first SSB, which is determined based on a target bit stream and a bit stream obtained by demodulating the PBCH in the first SSB (simply referred to as “demodulated bit stream”).

[0122] In some implementations, the target bit stream can be indicated by the first rule, that is, the first rule can indicate the target bit stream carried by the PBCH of each of the plurality of first SSBs. For example, the target bit stream carried by the PBCH of each of the plurality of first SSBs can be the same. For another example, the target bit stream carried by the PBCH of each of the plurality of first SSBs can change according to a certain rule.

[0123] In some implementations, the target bit stream can be understood as a reference bit stream for monitoring the demodulation performance. Correspondingly, if the difference between the demodulated bit stream and the target bit stream is large, it indicates that the monitoring result obtained by monitoring the demodulation performance is poor. On the contrary, if the demodulated bit stream is similar or identical to the target bit stream, it indicates that the monitoring result obtained by monitoring the demodulation performance is good.

[0124] In some implementations, the difference between the demodulated bit stream and the target bit stream can be measured by a BER. For example, if the BER is greater than a threshold, it indicates that the difference between the demodulated bit stream and the target bit stream is greater. Conversely, if the BER is less than the threshold, it indicates that the difference between the demodulated bit stream and the target bit stream is smaller.

[0125] In some other implementations, the performance monitoring on the demodulation performance of the PBCH in the first SSB can be based on a BLER obtained by decoding a channel transmitting the first SSB. In other words, the monitoring result of the performance monitoring can be determined based on the BLER.

[0126] In some implementations, if the BLER of receiving the first SSB is greater than a threshold, it indicates that the demodulation performance is poor. Conversely, if the BLER of receiving the first SSB is less than or equal to the threshold, it indicates that the demodulation performance is poor.

[0127] In some implementations, the BLER can be determined based on a cyclic redundancy check (CRC) check in the decoding process of the channel transmitting the first SSB.

[0128] Generally, the PBCH in the traditional SSB is used to carry the MIB information (e.g., system frame number, subcarrier spacing, half-frame indication, etc.). However, in the embodiments of the present application, the target bit stream carried by the PBCH in the first SSB is used for performance monitoring of the first SSB, and therefore, the target bit stream carried by the PBCH in the first SSB can not be used to indicate the MIB, or in other words, the target bit stream carried by the PBCH in the first SSB can not strictly correspond to the MIB, which helps to improve the flexibility of transmitting the first SSB.

[0129] The above describes the scheme of performance monitoring of the first SSB based on the first signal and the first rule in the embodiments of the present application in combination with Embodiment 1 and Embodiment 2. In some scenarios, the schemes of Embodiment 1 and Embodiment 2 can be used independently. In some other scenarios, the schemes of Embodiment 1 and Embodiment 2 can be used in combination. The following describes Embodiment 3 by taking the use of Embodiment 1 and Embodiment 2 in combination as an example.

[0130] Embodiment 3: The first signal and the first rule are used for performance monitoring of the first SSB.

[0131] In some implementations, the first signal includes the first SSB and a second SSB, and the first rule is used to indicate a transmission mode of a plurality of first SSBs to which the first SSB belongs. For brevity, the introduction of the first rule can be referred to Embodiment 2, and the introduction of the second SSB can be referred to Embodiment 1, which will not be repeated here.

[0132] In the embodiments of the present application, the time domain position between the second SSB and the plurality of first SSBs is not limited. In some implementations, the time domain position of the second SSB can be earlier than the time domain position of the plurality of first SSBs. Of course, in the embodiments of the present application, the time domain position of the second SSB can be interleaved between the time domain positions of the plurality of first SSBs. Alternatively, the time domain position of the second SSB can be later than the time domain position of the plurality of first SSBs.

[0133] In some implementations, the first rule described above can be carried in the PBCH of the second SSB, that is, the PBCH of the second SSB is used to indicate one or more of the following: a target bit stream for monitoring the PBCH demodulation performance of the first SSB; a second time interval between two first SSBs of the plurality of first SSBs indicated by the first rule; target information associated with the synchronization signal in each first SSB of the plurality of first SSBs indicated by the first rule, which can be referred to Embodiment 2. Of course, in the embodiments of the present application, the first rule can be indicated by pre-defined information and / or pre-configured information.

[0134] As described above, the first rule can be carried in the PBCH of the second SSB, at this time, the time domain position of the second SSB can be earlier than the time domain position of the plurality of first SSBs, so that the terminal device can obtain the first rule earlier to perform performance monitoring on the first SSB.

[0135] As described above, the time interval between the second SSB and the plurality of first SSBs can be carried in the PBCH of the second SSB, since the terminal device usually has the ability to detect the second SSB, if the time domain position of the second SSB can be earlier than the time domain position of the plurality of first SSBs, it is helpful for the terminal device to better determine the time domain position of the plurality of first SSBs.

[0136] In the embodiments of the present application, the time interval between the second SSB and the plurality of first SSBs is not limited. In some implementations, the time interval can be the time interval between the second SSB and the first SSB (or the earliest first SSB) of the plurality of first SSBs. Of course, in the embodiments of the present application, the time interval can be the time interval between the second SSB and a certain first SSB other than the first SSB of the plurality of first SSBs.

[0137] In order to facilitate understanding, the following describes a scheme for performing performance monitoring on the first SSB based on the first signal and the first rule in the embodiments of the present application in combination with FIG. 9.

[0138] Referring to FIG. 9, it is assumed that the second SSB is a Non-SIP SSB, and the plurality of first SSBs are SIP SSBs. Accordingly, the time interval between the Non-SIP SSB and the earliest SIP SSB in the plurality of SIP SSBs is T0. The first rule indicates that the second time interval between every two adjacent SIP SSBs in the plurality of SIP SSBs in time domain is t1, t2, …, t n In addition, the first rule indicates that the target information indicated by the synchronization signal sequence of each SIP SSB in the plurality of SIP SSBs is x1, x2, x3, …, x n n+1 As described above, the first rule and / or the time interval T0 can be carried in the PBCH in the Non-SIP SSB.

[0139] The above introduces the scheme for monitoring the performance of the first SSB in the embodiments of the present application. The following introduces the subsequent behavior based on the monitoring result of the performance monitoring in the embodiments of the present application.

[0140] In some implementations, if the monitoring result of the performance monitoring indicates that the performance of the first SSB is poor (for example, the monitoring result indicates that the performance of the first SSB is lower than a threshold), the terminal device can perform a first operation. The first operation can include one of the following: accessing the cell based on a third SSB; and switching the model for receiving the first SSB from a first model to a second model.

[0141] In some implementations, the synchronization signal in the third SSB and the PBCH in the third SSB are not transmitted in an overlapped manner through the same time-frequency resource, so the third SSB can also be referred to as a “Non SIP-SSB”. Or, the synchronization signal in the third SSB and the PBCH in the third SSB are transmitted through different time-frequency resources, for example, the resources occupied by the synchronization signal in the third SSB and the resources occupied by the PBCH in the third SSB do not overlap in time domain. For another example, the third SSB can be a traditional SSB, wherein the PSS, the PBCH, and the SSS in the traditional SSB occupy 4 consecutive time domain symbols.

[0142] As described above, the third SSB can be a traditional SSB, so the above-mentioned first operation of accessing the cell based on the third SSB can also be referred to as “scheme fallback”, that is, fallback from the scheme of accessing the cell based on the first SSB to the scheme of accessing the cell based on the traditional SSB.

[0143] In the embodiments of the present application, the terminal device generally has the capability of receiving the third SSB, so if the monitoring result of the performance monitoring indicates that the performance of the first SSB is poor, the terminal device can access the cell based on the third SSB, which helps to improve the success rate of the terminal device accessing the cell.​

[0144] In some implementations, the first model is used for the terminal device to receive the first SSB, that is, in the process of monitoring the performance of the first SSB, the terminal device can use the first model to receive the first SSB.

[0145] In some implementations, the second model is different from the first model. In addition, the second model can be a machine learning model or an AI model, for example. After the terminal device switches to the second model, the terminal device can use the second model to receive the first SSB, which helps to improve the performance of receiving the first SSB.

[0146] It should be noted that the terminal device can be configured with multiple models for receiving the first SSB, and accordingly, the multiple models can include the first model and the second model. In this way, the terminal device can perform model switching between the multiple models based on the monitoring result of the performance monitoring, so as to select a model with better performance to receive the first SSB, so as to improve the performance of the first SSB.

[0147] The above introduces the first operation in the embodiments of the present application, and the following introduces a scheme for determining the execution of the first operation in the embodiments of the present application.

[0148] In some implementations, the terminal device can determine the execution of the first operation based on the monitoring result of the performance monitoring. That is, the above method further includes: the terminal device determines the execution of the first operation based on the monitoring result of the performance monitoring.

[0149] Generally, after the terminal device determines the first operation, it is necessary to unify the understanding of the network device and the terminal device, for example, if the first operation is the scheme fallback introduced above, at this time, the network device needs to cooperate with the terminal device to send the third SSB. For another example, if the first operation is the model switching introduced above, at this time, the network device needs to continue to send the first SSB to the terminal device. Therefore, the terminal device can send first indication information to the network device to indicate the first operation. That is, the above method further includes: the terminal device sends first indication information to the network device, and the first indication information is used to indicate the first operation.

[0150] In other implementations, the network device can determine the execution of the first operation based on the monitoring result of the performance monitoring. That is, the above method further includes: the network device determines the execution of the first operation based on the monitoring result of the performance monitoring.

[0151] Generally, after the network device determines the first operation, the understanding of the network device and the terminal device needs to be unified, for example, if the first operation is the scheme fallback introduced above, at this time, the terminal device needs to receive the third SSB based on the transmission mode of the third SSB. For another example, if the first operation is the model switching introduced above, at this time, the terminal device needs to perform model switching. Therefore, the network device can send second indication information to the terminal device to indicate the first operation. That is to say, the above method further includes: the network device sends second indication information to the terminal device, and the second indication information is used to indicate the first operation.

[0152] In some implementations, if the first operation includes model switching, the network device can further indicate the model identifier of the second model to the terminal device, so that the terminal device performs switching. Of course, in the embodiments of the present application, the second model can also be selected by the terminal device autonomously.

[0153] In some implementations, the monitoring result of performance monitoring can be sent by the terminal device to the network device through third indication information. That is to say, the above method further includes: the terminal device sends third indication information to the network device, and the third indication information is used to indicate the monitoring result of performance monitoring. In the embodiments of the present application, the transmission mode of the monitoring result is not limited. For example, the monitoring result can be carried in one or more of the following: RRC, uplink control information (UCI), physical uplink shared channel (PUSCH).

[0154] In the embodiments of the present application, performance monitoring can be triggered by the terminal device or the network device. Taking the terminal device triggering performance monitoring as an example, the above method further includes: the terminal device sends fourth indication information to the network device, and the fourth indication information is used to trigger performance monitoring on the first SSB. The scheme of the embodiments of the present application can be applied to the scenario where the terminal device does not enter the RRC-connected state, at this time, the terminal device can not be able to interact with the network device.

[0155] It should be noted that in the above scenario, since the terminal device cannot interact with the network device. Therefore, the sending position of the test signal introduced above can be predefined or preconfigured. For example, the test signal can be periodically sent on one or more fixed frequency points through a protocol.

[0156] It should be further explained that the terminal device triggering performance monitoring can be applied to a scenario in which the terminal device establishes an RRC connection with the network device, and at this time, the network device can send configuration information 1 to the terminal device to configure the monitoring indicators of performance monitoring and / or the time-frequency resources used for performance monitoring (for example, the time-frequency resources for transmitting the first SSB and / or the second SSB) for the terminal device. In some scenarios, the configuration information 1 can also be used to indicate that the network device allows performance monitoring.

[0157] In addition, in the embodiments of the present application, the transmission mode of the fourth indication information is not limited. For example, the fourth indication information can be carried in one or more of the following: RRC, UCI, PUSCH.

[0158] Taking network device triggering performance monitoring as an example, the above method further includes: the network device sends fifth indication information to the terminal device, and the fifth indication information is used to trigger performance monitoring on the first SSB. The scheme of the embodiments of the present application can be applied to a scenario in which the terminal device establishes an RRC connection with the network device, and at this time, the terminal device can interact with the network device.

[0159] In some implementations, the fifth indication information can also be used to indicate one or more of the following: monitoring indicators of performance monitoring, and time-frequency resources used for performance monitoring (for example, time-frequency resources for transmitting the first SSB and / or the second SSB).

[0160] The performance monitoring process of the embodiments of the present application is introduced above. In order to facilitate understanding, the performance monitoring process shown in FIGS. 10 to 13 is taken as an example for introduction below. It should be noted that the coordination between the steps involved in the performance monitoring process is mainly introduced below, and the specific process involved in the performance monitoring process can be referred to the introduction above, and for the sake of brevity, will not be repeated hereinafter.

[0161] FIG. 10 is a schematic diagram of the performance monitoring process of the embodiments of the present application. The method shown in FIG. 10 includes steps S1010 to S1040.

[0162] In step S1010, the network device sends fifth indication information to the terminal device, and the fifth indication information is used to trigger performance monitoring on the first SSB.

[0163] In some implementations, the fifth indication information can also be used to indicate monitoring indicators of performance monitoring, and / or time-frequency resources used for performance monitoring (for example, time-frequency resources for transmitting the first SSB and / or the second SSB).

[0164] In step S1020, the terminal device performs performance monitoring on the first SSB to obtain monitoring results of performance monitoring.

[0165] In step S1030, the terminal device determines the first operation based on the monitoring result.

[0166] In step S1040, the terminal device sends first indication information to the network device, where the first indication information is used to indicate the first operation.

[0167] FIG. 11 is a schematic diagram of a performance monitoring process according to another embodiment of the present application. The method shown in FIG. 11 includes steps S1110 to S1150.

[0168] In step S1110, the network device sends fifth indication information to the terminal device, where the fifth indication information is used to trigger performance monitoring on the first SSB.

[0169] In some implementations, the fifth indication information can also be used to indicate a monitoring index of the performance monitoring, and / or time-frequency resources used for the performance monitoring (e.g., time-frequency resources for transmitting the first SSB and / or the second SSB).

[0170] In step S1120, the terminal device performs performance monitoring on the first SSB to obtain a monitoring result of the performance monitoring.

[0171] In step S1130, the terminal device sends third indication information to the network device, where the third indication information is used to indicate the monitoring result of the performance monitoring.

[0172] In step S1140, the network device determines the first operation based on the monitoring result.

[0173] In step S1150, the network device sends second indication information to the terminal device, where the second indication information is used to indicate the first operation.

[0174] FIG. 12 is a schematic diagram of a performance monitoring process according to another embodiment of the present application. The method shown in FIG. 12 includes steps S1210 to S1250.

[0175] In step S1210, the terminal device sends fourth indication information to the network device, where the fourth indication information is used to trigger performance monitoring on the first SSB.

[0176] In step S1220, the network device sends configuration information 1 to the terminal device to configure a monitoring index of the performance monitoring, and / or time-frequency resources used for the performance monitoring (e.g., time-frequency resources for transmitting the first SSB and / or the second SSB).

[0177] In some implementations, the above-mentioned configuration information 1 is used to indicate that the network device allows performance monitoring.

[0178] In step S1230, the terminal device performs performance monitoring on the first SSB to obtain a monitoring result of the performance monitoring.

[0179] In step S1240, the terminal device determines the first operation based on the monitoring result.

[0180] In step S1250, the terminal device sends first indication information to the network device, the first indication information being used to indicate the first operation.

[0181] FIG. 13 is a schematic diagram of a performance monitoring process according to another embodiment of the present application. The method shown in FIG. 13 includes steps S1310 to S1360.

[0182] In step S1310, the terminal device sends fourth indication information to the network device, the fourth indication information being used to trigger performance monitoring on the first SSB.

[0183] In step S1320, the network device sends configuration information 1 to the terminal device, the configuration information 1 being used to configure a monitoring indicator of the performance monitoring and / or a time-frequency resource (e.g., a time-frequency resource for transmitting the first SSB and / or the second SSB) used for the performance monitoring.

[0184] In some implementations, the above-mentioned configuration information 1 is used to indicate that the network device allows the performance monitoring.

[0185] In step S1330, the terminal device performs the performance monitoring on the first SSB to obtain a monitoring result of the performance monitoring.

[0186] In step S1340, the terminal device sends third indication information to the network device, the third indication information being used to indicate the monitoring result of the performance monitoring.

[0187] In step S1350, the network device determines the first operation based on the monitoring result.

[0188] In step S1360, the network device sends second indication information to the terminal device, the second indication information being used to indicate the first operation.

[0189] The method embodiments of the present application are described in detail above in combination with FIGS. 1 to 13, and the device embodiments of the present application are described in detail below in combination with FIGS. 14 to 16. It should be understood that the description of the method embodiments and the description of the device embodiments correspond to each other, and therefore, the parts not described in detail can be referred to the foregoing method embodiments.

[0190] FIG. 14 is a schematic diagram of a terminal device according to an embodiment of the present application. The terminal device 1400 shown in FIG. 14 includes a receiving unit 1410.

[0191] The receiving unit 1410 is configured to receive a first signal sent by a network device, wherein the first signal and / or a first rule are used for performance monitoring on a first SSB, and the first rule is used to indicate a transmission mode of the first signal; wherein a synchronization signal in the first SSB and the PBCH in the first SSB are transmitted on a same time-frequency resource.

[0192] In some implementations, the first signal includes a second SSB, wherein a resource occupied by a synchronization signal in the second SSB and a resource occupied by a PBCH in the second SSB do not overlap in a time domain.

[0193] In some implementations, a sequence corresponding to the synchronization signal in the first SSB is the same as a sequence corresponding to the synchronization signal in the second SSB; and / or information carried by the PBCH in the first SSB is the same as information carried by the PBCH in the second SSB.

[0194] In some implementations, the first SSB and the second SSB are transmitted in a time division multiplexing and / or frequency division multiplexing manner.

[0195] In some implementations, the performance monitoring on the first SSB includes performance monitoring on synchronization performance of the first SSB, and the performance monitoring is based on a predicted receiving time of the first SSB and a receiving time of the first SSB, wherein the predicted receiving time of the first SSB is determined based on a receiving time of the second SSB and a first time interval between a transmission time of the first SSB and a transmission time of the second SSB.

[0196] In some implementations, the first time interval is determined based on one or more of the following information: predefined information; preconfigured information; information carried by the PBCH in the second SSB.

[0197] In some implementations, the performance monitoring on the first SSB includes performance monitoring on performance of detecting a synchronization signal sequence in the first SSB, and the performance monitoring is based on target information associated with the second SSB and target information indicated by the synchronization signal sequence in the first SSB.

[0198] In some implementations, the target information associated with the second SSB includes one or more of the following: the target information indicated by the synchronization signal sequence in the second SSB; the target information indicated by the PBCH in the second SSB.

[0199] In some embodiments, the first SSB and the second SSB are transmitted in multiple rounds, the target information associated with the first SSB in each round of the multiple rounds is different, the target information associated with the second SSB in each round of the multiple rounds is different, and the target information associated with the first SSB in each round of the multiple rounds is the same as the target information associated with the second SSB in each round of the multiple rounds.

[0200] In some embodiments, the first signal comprises the first SSB, and the first rule is used to indicate a transmission manner of a plurality of first SSBs to which the first SSB belongs.

[0201] In some embodiments, the first rule is used to indicate one or more of: a second time interval between two first SSBs in the plurality of first SSBs; information indicated by a PBCH in each first SSB in the plurality of first SSBs; target information associated with a synchronization signal in each first SSB in the plurality of first SSBs.

[0202] In some embodiments, the two first SSBs comprise a reference SSB and the first SSB, the performance monitoring of the first SSB comprises performance monitoring of synchronization performance of the first SSB, and the performance monitoring is based on an estimated receiving time of the first SSB and a receiving time of the first SSB, wherein the estimated receiving time of the first SSB is determined based on a receiving time of the reference SSB and a second time interval between a transmission time of the first SSB and a transmission time of the reference SSB.

[0203] In some embodiments, the performance monitoring of the first SSB comprises performance monitoring of performance of detecting target information indicated by a synchronization signal sequence in the first SSB, and the performance monitoring is based on target information obtained by detecting the synchronization signal sequence in each first SSB in the plurality of first SSBs and target information indicated by the first rule.

[0204] In some embodiments, the performance monitoring of the first SSB comprises performance monitoring of demodulation performance of a PBCH in the first SSB, and the performance monitoring is determined based on a target bit stream and a bit stream obtained by demodulating the PBCH in the first SSB, wherein the target bit stream comprises one or more of: a bit stream obtained by demodulating the PBCH in the second SSB; a predefined bit stream; and a bit stream indicated by the network device.

[0205] In some embodiments, the performance monitoring on the first SSB comprises performance monitoring on demodulation performance of PBCH in the first SSB, and the performance monitoring is based on BLER obtained by decoding a channel transmitting the first SSB.

[0206] In some embodiments, the first signal comprises the first SSB and the second SSB, the first rule is used to indicate a transmission mode of a plurality of first SSBs to which the first SSB belongs, and a time domain position of the second SSB is earlier than time domain positions of the plurality of first SSBs.

[0207] In some embodiments, the PBCH in the second SSB is used to indicate one or more of: a target bit stream for monitoring the demodulation performance of the PBCH in the first SSB; a second time interval between two first SSBs in the plurality of first SSBs indicated by the first rule; and target information indicated by a synchronization signal sequence in each first SSB in the plurality of first SSBs indicated by the first rule.

[0208] In some embodiments, the pre-defined information and / or the pre-configured information is used to indicate one or more of: a target bit stream for monitoring the demodulation performance of the PBCH in the first SSB; a second time interval between two first SSBs in the plurality of first SSBs indicated by the first rule; and target information associated with a synchronization signal in each first SSB in the plurality of first SSBs indicated by the first rule.

[0209] In some embodiments, the target information is determined based on a cell identifier of a cell associated with the first SSB.

[0210] In some embodiments, the terminal device further comprises a first processing unit, and if a monitoring result of the performance monitoring indicates that a performance of the first SSB is lower than a threshold value, the first processing unit is used to perform a first operation, wherein the first operation comprises one of: accessing a cell based on a third SSB, wherein a resource occupied by a synchronization signal in the third SSB and a resource occupied by a PBCH in the third SSB do not overlap in a time domain; and switching a model for receiving the first SSB from a first model to a second model, the first model being used for the terminal device to receive the first SSB.

[0211] In some embodiments, the terminal device further comprises a second processing unit, configured to determine to perform the first operation based on a monitoring result of the performance monitoring.

[0212] In some embodiments, the terminal device further comprises a first sending unit, configured to send first indication information to the network device, the first indication information being used to indicate the first operation.

[0213] In some implementations, the receiving unit is further configured to receive second indication information sent by the network device, where the second indication information is used to indicate the first operation.

[0214] In some implementations, the terminal device further includes a second sending unit, configured to send third indication information to the network device, where the third indication information is used to indicate a monitoring result of the performance monitoring.

[0215] In some implementations, the terminal device further includes a third sending unit, configured to send fourth indication information to the network device, where the fourth indication information is used to trigger performance monitoring on the first SSB; or the receiving unit is configured to receive fifth indication information sent by the network device, where the fifth indication information is used to trigger performance monitoring on the first SSB.

[0216] FIG. 15 is a schematic diagram of a network device according to an embodiment of the present application. The network device 1500 shown in FIG. 15 includes a sending unit 1510.

[0217] The sending unit 1510 is configured to send a first signal to a terminal device, where the first signal and / or a first rule are used to perform performance monitoring on a first SSB, and the first rule is used to indicate a transmission mode of the first signal; and a synchronization signal in the first SSB and the PBCH in the first SSB are transmitted on the same time-frequency resource.

[0218] In some implementations, the first signal includes a second SSB, where a resource occupied by a synchronization signal in the second SSB and a resource occupied by a PBCH in the second SSB do not overlap in the time domain.

[0219] In some implementations, a sequence corresponding to the synchronization signal in the first SSB is the same as a sequence corresponding to the synchronization signal in the second SSB; and / or information carried by the PBCH in the first SSB is the same as information carried by the PBCH in the second SSB.

[0220] In some implementations, the first SSB and the second SSB are transmitted in a time division multiplexing and / or frequency division multiplexing manner.

[0221] In some embodiments, the performance monitoring on the first SSB comprises performance monitoring on synchronization performance of the first SSB, and the performance monitoring is based on an estimated receiving time of the first SSB and a receiving time of the first SSB, wherein the estimated receiving time of the first SSB is determined based on the receiving time of the second SSB and a first time interval between a transmission time of the first SSB and a transmission time of the second SSB.

[0222] In some embodiments, the first time interval is determined based on one or more of the following: pre-defined information; pre-configured information; information carried by PBCH in the second SSB.

[0223] In some embodiments, the performance monitoring on the first SSB comprises performance monitoring on performance of detecting synchronization signal sequence in the first SSB, and the performance monitoring is based on target information associated with the second SSB and target information indicated by synchronization signal sequence in the first SSB.

[0224] In some embodiments, the target information associated with the second SSB comprises one or more of the following: the target information indicated by synchronization signal sequence in the second SSB; the target information indicated by PBCH in the second SSB.

[0225] In some embodiments, in multiple rounds of transmission of the first SSB and the second SSB, the target information associated with the first SSB in the multiple rounds of transmission is different, the target information associated with the second SSB in the multiple rounds of transmission is different, and the target information associated with the first SSB is the same as the target information associated with the second SSB in each round of transmission in the multiple rounds of transmission.

[0226] In some embodiments, the first signal comprises the first SSB, and the first rule is used to indicate a transmission manner of a plurality of first SSBs to which the first SSB belongs.

[0227] In some embodiments, the first rule is used to indicate one or more of the following: a second time interval between two first SSBs in the plurality of first SSBs; information indicated by PBCH in each first SSB in the plurality of first SSBs; target information indicated by synchronization signal sequence in each first SSB in the plurality of first SSBs.

[0228] In some embodiments, the two first SSBs include a reference SSB and the first SSB, the performance monitoring of the first SSBs includes performance monitoring of synchronization performance of the first SSB, the performance monitoring is based on an estimated receiving time of the first SSB and a receiving time of the first SSB, wherein the estimated receiving time of the first SSB is determined based on a receiving time of the reference SSB and a second time interval between a transmission time of the first SSB and a transmission time of the reference SSB.

[0229] In some embodiments, the performance monitoring of the first SSBs includes performance monitoring of performance of detecting target information indicated by synchronization signal sequences in the first SSB, the performance monitoring is based on target information obtained by detecting synchronization signal sequences in each of the first SSBs and target information indicated by the first rule.

[0230] In some embodiments, the performance monitoring of the first SSBs includes performance monitoring of demodulation performance of PBCH in the first SSB, the performance monitoring is determined based on a target bit stream and a bit stream obtained by demodulating PBCH in the first SSB, wherein the target bit stream includes one or more of: a bit stream obtained by demodulating PBCH in the second SSB; a predefined bit stream; a bit stream indicated by the network device.

[0231] In some embodiments, the performance monitoring of the first SSBs includes performance monitoring of demodulation performance of PBCH in the first SSB, the performance monitoring is based on BLER obtained by decoding a channel transmitting the first SSB.

[0232] In some embodiments, the first signals include the first SSB and the second SSB, the first rule is used to indicate a transmission manner of a plurality of first SSBs to which the first SSB belongs, and a time domain position of the second SSB is earlier than time domain positions of the plurality of first SSBs.

[0233] In some embodiments, PBCH in the second SSB is used to indicate one or more of: a target bit stream used for monitoring demodulation performance of PBCH in the first SSB; a second time interval between two first SSBs in the plurality of first SSBs indicated by the first rule; target information associated with synchronization signal sequences in each of the plurality of first SSBs indicated by the first rule.

[0234] In some implementations, the predefined information and / or the preconfigured information is used to indicate one or more of: a target bit stream for monitoring a PBCH demodulation performance in the first SSB; a second time interval between two first SSBs of the plurality of first SSBs indicated by the first rule; and target information associated with a synchronization signal in each first SSB of the plurality of first SSBs indicated by the first rule.

[0235] In some implementations, the target information is determined based on a cell identification of a cell associated with the first SSB.

[0236] In some implementations, if the monitoring result of the performance monitoring indicates that the performance of the first SSB is lower than a threshold, a first operation is triggered, wherein the first operation includes one of: sending a third SSB for accessing a cell, wherein a resource occupied by a synchronization signal in the third SSB and a resource occupied by a PBCH in the third SSB do not overlap in a time domain; and switching a model for receiving the first SSB from a first model to a second model, the first model being used for the terminal device to receive the first SSB.

[0237] In some implementations, the network device further includes a first receiving unit configured to receive first indication information sent by the terminal device, the first indication information being used to indicate the first operation.

[0238] In some implementations, the network device further includes a first processing unit configured to determine the first operation based on a monitoring result of the performance monitoring.

[0239] In some implementations, the sending unit is further configured to send second indication information to the terminal device, the second indication information being used to indicate the first operation.

[0240] In some implementations, the network device further includes a second receiving unit configured to receive third indication information sent by the terminal device, the third indication information being used to indicate the monitoring result of the performance monitoring.

[0241] In some implementations, the network device further includes a third receiving unit configured to receive fourth indication information sent by the terminal device, the fourth indication information being used to trigger the performance monitoring on the first SSB; or the sending unit is configured to send fifth indication information to the terminal device, the fifth indication information being used to trigger the performance monitoring on the first SSB.

[0242] In an optional embodiment, the receiving unit 1410 can be a transceiver 1630. The terminal device 1400 can further include a processor 1610 and a memory 1620, as shown in FIG. 16.

[0243] In an optional embodiment, the sending unit 1510 can be a transceiver 1630. The network device 1500 can further include a processor 1610 and a memory 1620, as shown in FIG. 16.

[0244] FIG. 16 is a schematic structural diagram of a communication apparatus according to an embodiment of the present application. The dashed line in FIG. 16 indicates that the unit or module is optional. The apparatus 1600 can be used to implement the method described in the above method embodiments. The apparatus 1600 can be a chip, a terminal device or a network device.

[0245] The apparatus 1600 can include one or more processors 1610. The processor 1610 can support the apparatus 1600 to implement the method described in the above method embodiments. The processor 1610 can be a general purpose processor or a dedicated processor. For example, the processor can be a central processing unit (CPU). Alternatively, the processor can also be other general purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic, discrete hardware components, etc. The general purpose processor can be a microprocessor or the processor can also be any conventional processor.

[0246] The apparatus 1600 can further include one or more memories 1620. The memory 1620 stores a program, which can be executed by the processor 1610, so that the processor 1610 performs the method described in the above method embodiments. The memory 1620 can be independent of the processor 1610 or integrated in the processor 1610.

[0247] The apparatus 1600 can further include a transceiver 1630. The processor 1610 can communicate with other devices or chips through the transceiver 1630. For example, the processor 1610 can perform data transceiving with other devices or chips through the transceiver 1630.

[0248] The embodiments of the present application further provide a computer readable storage medium for storing a program. The computer readable storage medium can be applied to the terminal or network device provided by the embodiments of the present application, and the program causes the computer to execute the method performed by the terminal or network device in the embodiments of the present application.

[0249] The embodiment of the present application further provides a computer program product. The computer program product comprises a program. The computer program product can be applied to the terminal or the network device provided by the embodiment of the present application, and the program causes the computer to execute the method performed by the terminal or the network device in the various embodiments of the present application.

[0250] The embodiment of the present application further provides a computer program. The computer program can be applied to the terminal or the network device provided by the embodiment of the present application, and the computer program causes the computer to execute the method performed by the terminal or the network device in the various embodiments of the present application.

[0251] It should be understood that the terms "system" and "network" can be used interchangeably in the present application. In addition, the terms used in the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application. The terms "first", "second", "third", and "fourth" and the like in the specification and claims of the present application and the drawings are used to distinguish different objects, and are not used to describe a particular order. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0252] In the embodiments of the present application, the "indication" mentioned can be direct indication, or indirect indication, or can be an indication of an associated relationship. For example, A indicates B, which can mean that B can be obtained directly through A; or A indirectly indicates B, for example, A indicates C, and B can be obtained through C; or A and B have an associated relationship.

[0253] In the embodiments of the present application, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B according to A does not mean that B is determined only according to A, but B can also be determined according to A and / or other information.

[0254] In the embodiments of the present application, the term "corresponding" can mean that there is a direct or indirect corresponding relationship between the two, or can mean that there is an associated relationship between the two, or can mean an indication and being indicated, configuration and being configured, and the like.

[0255] In the embodiments of the present application, "predefined" or "preconfigured" can be realized by pre-saving corresponding codes, tables or other means for indicating related information in devices (for example, including terminal devices and network devices), and the present application does not limit the specific implementation manner. For example, predefinition can mean definition in a protocol.

[0256] In the embodiments of the present application, the "protocol" can refer to a standard protocol in the communication field, for example, can include an LTE protocol, an NR protocol, and a related protocol applied to a future communication system, and the present application does not limit this.

[0257] The term "and / or" in the embodiments of the present application is merely an association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in the present application generally represents an "or" relationship between the associated objects.

[0258] In various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of the processes should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0259] In several embodiments provided by the present application, it should be understood that the disclosed system, device and method can be implemented by other ways. For example, the device embodiments described above are only schematic, and the division of the units is only a logical function division, and there can be another division way in actual implementation, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or other forms.

[0260] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. According to actual needs, part or all of the units can be selected to achieve the purpose of the embodiments of the present application.

[0261] In addition, each functional unit in each embodiment of the present application can be integrated into a processing unit, or each unit can exist physically independently, or two or more units can be integrated into one unit.

[0262] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode. The computer readable storage medium can be any available medium that can be read by a computer or a data storage device such as a server, data center and the like integrated with one or more available media sets. The available media can be magnetic media (for example, floppy disk, hard disk, magnetic tape), optical media (for example, digital video disc (DVD)) or semiconductor media (for example, solid state disk (SSD)) and the like.

[0263] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method for wireless communication, characterized in that, include: The terminal device receives a first signal sent by the network device, the first signal and / or the first rule are used to perform performance monitoring on the first SSB, and the first rule is used to indicate the transmission mode of the first signal; The first synchronization signal and the synchronization signal in the physical broadcast channel block (SSB), as well as the physical broadcast channel block (PBCH) in the first SSB, are superimposed on the same time-frequency resources for transmission.

2. The method as described in claim 1, characterized in that, The first signal includes a second SSB, wherein the resources occupied by the synchronization signal in the second SSB and the resources occupied by the PBCH in the second SSB do not overlap in the time domain.

3. The method as described in claim 2, characterized in that, The sequence corresponding to the synchronization signal in the first SSB is the same as the sequence corresponding to the synchronization signal in the second SSB; and / or The information carried by the PBCH in the first SSB is the same as the information carried by the PBCH in the second SSB.

4. The method as described in claim 2 or 3, characterized in that, The first SSB and the second SSB are transmitted in a time-division multiplexing and / or frequency-division multiplexing manner.

5. The method according to any one of claims 2-4, characterized in that, The performance monitoring of the first SSB includes monitoring the synchronization performance of the first SSB. The performance monitoring is based on the estimated reception time of the first SSB and the reception time of the first SSB. The estimated reception time of the first SSB is determined based on the reception time of the second SSB and a first time interval between the transmission time of the first SSB and the transmission time of the second SSB.

6. The method as described in claim 5, characterized in that, The first time interval is determined based on one or more of the following information: predefined information; preconfiguration information; information carried by the PBCH in the second SSB.

7. The method according to any one of claims 2-6, characterized in that, The performance monitoring of the first SSB includes monitoring the performance of detecting the synchronization signal sequence in the first SSB. The performance monitoring is based on the target information associated with the second SSB and the target information indicated by the synchronization signal sequence in the first SSB.

8. The method as described in claim 7, characterized in that, The target information associated with the second SSB includes one or more of the following: The target information indicated by the synchronization signal sequence in the second SSB; The target information indicated by PBCH in the second SSB.

9. The method as described in claim 7 or 8, characterized in that, During multiple rounds of transmission of the first SSB and the second SSB, the target information associated with the first SSB in each round of transmission is different, the target information associated with the second SSB in each round of transmission is different, and in each round of transmission, the target information associated with the first SSB and the target information associated with the second SSB are the same.

10. The method according to any one of claims 1-9, characterized in that, The first signal includes the first SSB, and the first rule is used to indicate the transmission mode of the plurality of first SSBs to which the first SSB belongs.

11. The method as described in claim 10, characterized in that, The first rule is used to indicate one or more of the following: The second time interval between two first SSBs in the plurality of first SSBs; The information indicated by the PBCH in each of the plurality of first SSBs; The target information associated with the synchronization signal in each of the plurality of first SSBs.

12. The method as described in claim 11, characterized in that, The two first SSBs include a reference SSB and the first SSB. Performance monitoring of the first SSB includes performance monitoring of the synchronization performance of the first SSB. The performance monitoring is based on the estimated reception time of the first SSB and the reception time of the first SSB. The estimated reception time of the first SSB is determined based on the reception time of the reference SSB and a second time interval between the transmission time of the first SSB and the transmission time of the reference SSB.

13. The method as described in claim 11 or 12, characterized in that, The performance monitoring of the first SSB includes monitoring the performance of detecting the target information indicated by the synchronization signal sequence in the first SSB. The performance monitoring is based on the target information obtained by detecting the synchronization signal sequence in each of the plurality of first SSBs and the target information indicated by the first rule.

14. The method according to any one of claims 2-13, characterized in that, The performance monitoring of the first SSB includes monitoring the demodulation performance of the PBCH in the first SSB. The performance monitoring is determined based on the target bitstream and the bitstream obtained by demodulating the PBCH in the first SSB. The target bitstream includes one or more of the following: The bit stream obtained by demodulating PBCH in the second SSB; Predefined bitstream; The bit stream indicated by the network device.

15. The method according to any one of claims 2-14, characterized in that, The performance monitoring of the first SSB includes monitoring the demodulation performance of the PBCH in the first SSB, and the performance monitoring is based on the block error rate (BLER) obtained by decoding the channel through which the first SSB is transmitted.

16. The method according to any one of claims 2-15, characterized in that, The first signal includes the first SSB and the second SSB. The first rule is used to indicate the transmission mode of the plurality of first SSBs to which the first SSB belongs. The time domain position of the second SSB is earlier than the time domain position of the plurality of first SSBs.

17. The method as described in claim 16, characterized in that, In the second SSB, PBCH is used to indicate one or more of the following: The target bitstream used to monitor the PBCH demodulation performance in the first SSB; The second time interval between two first SSBs among the plurality of first SSBs indicated by the first rule; The target information indicated by the synchronization signal sequence in each of the plurality of first SSBs indicated by the first rule.

18. The method as described in claim 16, characterized in that, Predefined and / or preconfigured information is used to indicate one or more of the following: The target bitstream used to monitor the PBCH demodulation performance in the first SSB; The second time interval between two first SSBs among the plurality of first SSBs indicated by the first rule; The target information associated with the synchronization signal in each of the plurality of first SSBs indicated by the first rule.

19. The method according to any one of claims 7-11, 13, 17 and 18, characterized in that, The target information is determined based on the cell identifier of the cell associated with the first SSB.

20. The method according to any one of claims 1-19, characterized in that, The method further includes: If the performance monitoring results indicate that the performance of the first SSB is below a threshold, then the terminal device performs a first operation. The first operation includes one of the following: Access cells are based on a third SSB, wherein the resources occupied by the synchronization signal in the third SSB and the resources occupied by the PBCH in the third SSB do not overlap in the time domain. The model for receiving the first SSB is switched from the first model to the second model, where the first model is used for the terminal device to receive the first SSB.

21. The method as described in claim 20, characterized in that, The method further includes: Based on the monitoring results of the performance monitoring, the terminal device determines to perform the first operation.

22. The method as described in claim 21, characterized in that, The method further includes: The terminal device sends a first instruction message to the network device, the first instruction message being used to instruct the first operation.

23. The method as described in claim 21, characterized in that, The method further includes: The terminal device receives a second instruction information sent by the network device, the second instruction information being used to instruct the first operation.

24. The method as described in claim 23, characterized in that, The method further includes: The terminal device sends a third indication message to the network device, the third indication message being used to indicate the monitoring results of the performance monitoring.

25. The method according to any one of claims 1-24, characterized in that, The method further includes: The terminal device sends a fourth indication message to the network device, the fourth indication message being used to trigger performance monitoring of the first SSB; or The terminal device receives a fifth indication message sent by the network device, the fifth indication message being used to trigger performance monitoring of the first SSB.

26. A method for wireless communication, characterized in that, include: The network device sends a first signal to the terminal device. The first signal and / or the first rule are used to monitor the performance of the first SSB. The first rule is used to indicate the transmission mode of the first signal. The synchronization signal in the first SSB and the PBCH in the first SSB are superimposed on the same time-frequency resources for transmission.

27. The method as described in claim 26, characterized in that, The first signal includes a second SSB, wherein the resources occupied by the synchronization signal in the second SSB and the resources occupied by the PBCH in the second SSB do not overlap in the time domain.

28. The method as described in claim 27, characterized in that, The sequence corresponding to the synchronization signal in the first SSB is the same as the sequence corresponding to the synchronization signal in the second SSB; and / or The information carried by the PBCH in the first SSB is the same as the information carried by the PBCH in the second SSB.

29. The method as described in claim 27 or 28, characterized in that, The first SSB and the second SSB are transmitted in a time-division multiplexing and / or frequency-division multiplexing manner.

30. The method according to any one of claims 27-29, characterized in that, The performance monitoring of the first SSB includes monitoring the synchronization performance of the first SSB. The performance monitoring is based on the estimated reception time of the first SSB and the reception time of the first SSB. The estimated reception time of the first SSB is determined based on the reception time of the second SSB and a first time interval between the transmission time of the first SSB and the transmission time of the second SSB.

31. The method as described in claim 30, characterized in that, The first time interval is determined based on one or more of the following information: predefined information; preconfiguration information; information carried by the PBCH in the second SSB.

32. The method according to any one of claims 27-31, characterized in that, The performance monitoring of the first SSB includes monitoring the performance of detecting the synchronization signal sequence in the first SSB. The performance monitoring is based on the target information associated with the second SSB and the target information indicated by the synchronization signal sequence in the first SSB.

33. The method as described in claim 32, characterized in that, The target information associated with the second SSB includes one or more of the following: The target information indicated by the synchronization signal sequence in the second SSB; The target information indicated by PBCH in the second SSB.

34. The method as described in claim 32 or 33, characterized in that, During multiple rounds of transmission of the first SSB and the second SSB, the target information associated with the first SSB in each round of transmission is different, the target information associated with the second SSB in each round of transmission is different, and in each round of transmission, the target information associated with the first SSB and the target information associated with the second SSB are the same.

35. The method according to any one of claims 26-34, characterized in that, The first signal includes the first SSB, and the first rule is used to indicate the transmission mode of the plurality of first SSBs to which the first SSB belongs.

36. The method as described in claim 35, characterized in that, The first rule is used to indicate one or more of the following: The second time interval between two first SSBs in the plurality of first SSBs; The information indicated by the PBCH in each of the plurality of first SSBs; The target information indicated by the synchronization signal sequence in each of the plurality of first SSBs.

37. The method as described in claim 36, characterized in that, The two first SSBs include a reference SSB and the first SSB. The performance monitoring of the first SSB includes performance monitoring of the synchronization performance of the first SSB. The performance monitoring is based on the estimated reception time of the first SSB and the reception time of the first SSB. The estimated reception time of the first SSB is determined based on the reception time of the reference SSB and a second time interval between the transmission time of the first SSB and the transmission time of the reference SSB.

38. The method as described in claim 36 or 37, characterized in that, The performance monitoring of the first SSB includes monitoring the performance of detecting the target information indicated by the synchronization signal sequence in the first SSB. The performance monitoring is based on the target information obtained by detecting the synchronization signal sequence in each of the plurality of first SSBs and the target information indicated by the first rule.

39. The method according to any one of claims 27-38, characterized in that, The performance monitoring of the first SSB includes monitoring the demodulation performance of the PBCH in the first SSB. The performance monitoring is determined based on the target bitstream and the bitstream obtained by demodulating the PBCH in the first SSB. The target bitstream includes one or more of the following: The bit stream obtained by demodulating PBCH in the second SSB; Predefined bitstream; The bit stream indicated by the network device.

40. The method according to any one of claims 27-39, characterized in that, The performance monitoring of the first SSB includes monitoring the demodulation performance of the PBCH in the first SSB, and the performance monitoring is based on the BLER obtained by decoding the channel through which the first SSB is transmitted.

41. The method according to any one of claims 27-40, characterized in that, The first signal includes the first SSB and the second SSB. The first rule is used to indicate the transmission mode of the plurality of first SSBs to which the first SSB belongs. The time domain position of the second SSB is earlier than the time domain position of the plurality of first SSBs.

42. The method as described in claim 41, characterized in that, In the second SSB, PBCH is used to indicate one or more of the following: The target bitstream used to monitor the PBCH demodulation performance in the first SSB; The second time interval between two first SSBs among the plurality of first SSBs indicated by the first rule; The target information associated with the synchronization signal sequence in each of the plurality of first SSBs indicated by the first rule.

43. The method as described in claim 41, characterized in that, Predefined and / or preconfigured information is used to indicate one or more of the following: The target bitstream used to monitor the PBCH demodulation performance in the first SSB; The second time interval between two first SSBs among the plurality of first SSBs indicated by the first rule; The target information associated with the synchronization signal in each of the plurality of first SSBs indicated by the first rule.

44. The method according to any one of claims 32-36, 38, 42, and 43, characterized in that, The target information is determined based on the cell identifier of the cell associated with the first SSB.

45. The method according to any one of claims 26-44, characterized in that, If the performance monitoring results indicate that the performance of the first SSB is below a threshold, a first operation is triggered, wherein the first operation includes one of the following: Send a third SSB for accessing the cell, wherein the resources occupied by the synchronization signal in the third SSB and the resources occupied by the PBCH in the third SSB do not overlap in the time domain. The model for receiving the first SSB is switched from the first model to the second model, where the first model is used for the terminal device to receive the first SSB.

46. ​​The method as described in claim 45, characterized in that, The method further includes: The network device receives a first instruction information sent by the terminal device, the first instruction information being used to instruct the first operation.

47. The method as described in claim 46, characterized in that, The method further includes: The network device determines the first operation based on the monitoring results of the performance monitoring.

48. The method as described in claim 47, characterized in that, The method further includes: The network device sends a second instruction to the terminal device, the second instruction being used to instruct the first operation.

49. The method as described in claim 48, characterized in that, The method further includes: The network device receives a third indication information sent by the terminal device, the third indication information being used to indicate the monitoring results of the performance monitoring.

50. The method according to any one of claims 26-49, characterized in that, The method further includes: The network device receives a fourth indication message sent by the terminal device, the fourth indication message being used to trigger performance monitoring of the first SSB; or The network device sends a fifth indication message to the terminal device, the fifth indication message being used to trigger performance monitoring of the first SSB.

51. A terminal device, characterized in that, include: A receiving unit is configured to receive a first signal sent by a network device, wherein the first signal and / or a first rule are used to perform performance monitoring on a first SSB, and the first rule is used to indicate the transmission mode of the first signal. The synchronization signal in the first SSB and the PBCH in the first SSB are superimposed on the same time-frequency resources for transmission.

52. The terminal device as described in claim 51, characterized in that, The first signal includes a second SSB, wherein the resources occupied by the synchronization signal in the second SSB and the resources occupied by the PBCH in the second SSB do not overlap in the time domain.

53. The terminal device as described in claim 52, characterized in that, The sequence corresponding to the synchronization signal in the first SSB is the same as the sequence corresponding to the synchronization signal in the second SSB; and / or The information carried by the PBCH in the first SSB is the same as the information carried by the PBCH in the second SSB.

54. The terminal device as described in claim 52 or 53, characterized in that, The first SSB and the second SSB are transmitted in a time-division multiplexing and / or frequency-division multiplexing manner.

55. The terminal device as described in any one of claims 52-54, characterized in that, The performance monitoring of the first SSB includes monitoring the synchronization performance of the first SSB. The performance monitoring is based on the estimated reception time of the first SSB and the reception time of the first SSB. The estimated reception time of the first SSB is determined based on the reception time of the second SSB and a first time interval between the transmission time of the first SSB and the transmission time of the second SSB.

56. The terminal device as described in claim 55, characterized in that, The first time interval is determined based on one or more of the following information: predefined information; preconfiguration information; information carried by the PBCH in the second SSB.

57. The terminal device as described in any one of claims 52-56, characterized in that, The performance monitoring of the first SSB includes monitoring the performance of detecting the synchronization signal sequence in the first SSB. The performance monitoring is based on the target information associated with the second SSB and the target information indicated by the synchronization signal sequence in the first SSB.

58. The terminal device as described in claim 57, characterized in that, The target information associated with the second SSB includes one or more of the following: The target information indicated by the synchronization signal sequence in the second SSB; The target information indicated by PBCH in the second SSB.

59. The terminal device as described in claim 57 or 58, characterized in that, During multiple rounds of transmission of the first SSB and the second SSB, the target information associated with the first SSB in each round of transmission is different, the target information associated with the second SSB in each round of transmission is different, and in each round of transmission, the target information associated with the first SSB and the target information associated with the second SSB are the same.

60. The terminal device as described in any one of claims 51-59, characterized in that, The first signal includes the first SSB, and the first rule is used to indicate the transmission mode of the plurality of first SSBs to which the first SSB belongs.

61. The terminal device as described in claim 60, characterized in that, The first rule is used to indicate one or more of the following: The second time interval between two first SSBs in the plurality of first SSBs; The information indicated by the PBCH in each of the plurality of first SSBs; The target information associated with the synchronization signal in each of the plurality of first SSBs.

62. The terminal device as described in claim 61, characterized in that, The two first SSBs include a reference SSB and the first SSB. Performance monitoring of the first SSB includes performance monitoring of the synchronization performance of the first SSB. The performance monitoring is based on the estimated reception time of the first SSB and the reception time of the first SSB. The estimated reception time of the first SSB is determined based on the reception time of the reference SSB and a second time interval between the transmission time of the first SSB and the transmission time of the reference SSB.

63. The terminal device as described in claim 61 or 62, characterized in that, The performance monitoring of the first SSB includes monitoring the performance of detecting the target information indicated by the synchronization signal sequence in the first SSB. The performance monitoring is based on the target information obtained by detecting the synchronization signal sequence in each of the plurality of first SSBs and the target information indicated by the first rule.

64. The terminal device as described in any one of claims 52-63, characterized in that, The performance monitoring of the first SSB includes monitoring the demodulation performance of the PBCH in the first SSB. The performance monitoring is determined based on the target bitstream and the bitstream obtained by demodulating the PBCH in the first SSB. The target bitstream includes one or more of the following: The bit stream obtained by demodulating PBCH in the second SSB; Predefined bitstream; The bit stream indicated by the network device.

65. The terminal device as described in any one of claims 52-64, characterized in that, The performance monitoring of the first SSB includes monitoring the demodulation performance of the PBCH in the first SSB, and the performance monitoring is based on the BLER obtained by decoding the channel through which the first SSB is transmitted.

66. The terminal device as described in any one of claims 52-65, characterized in that, The first signal includes the first SSB and the second SSB. The first rule is used to indicate the transmission mode of the plurality of first SSBs to which the first SSB belongs. The time domain position of the second SSB is earlier than the time domain position of the plurality of first SSBs.

67. The terminal device as described in claim 66, characterized in that, In the second SSB, PBCH is used to indicate one or more of the following: The target bitstream used to monitor the PBCH demodulation performance in the first SSB; The second time interval between two first SSBs among the plurality of first SSBs indicated by the first rule; The target information indicated by the synchronization signal sequence in each of the plurality of first SSBs indicated by the first rule.

68. The terminal device as described in claim 66, characterized in that, Predefined and / or preconfigured information is used to indicate one or more of the following: The target bitstream used to monitor the PBCH demodulation performance in the first SSB; The second time interval between two first SSBs among the plurality of first SSBs indicated by the first rule; The target information associated with the synchronization signal in each of the plurality of first SSBs indicated by the first rule.

69. The terminal device according to any one of claims 57-61, 63, 67 and 68, characterized in that, The target information is determined based on the cell identifier of the cell associated with the first SSB.

70. The terminal device as described in any one of claims 51-69, characterized in that, The terminal device also includes a first processing unit. If the performance monitoring result indicates that the performance of the first SSB is below a threshold, then the first processing unit performs a first operation. The first operation includes one of the following: Access cells are based on a third SSB, wherein the resources occupied by the synchronization signal in the third SSB and the resources occupied by the PBCH in the third SSB do not overlap in the time domain. The model for receiving the first SSB is switched from the first model to the second model, where the first model is used for the terminal device to receive the first SSB.

71. The terminal device as described in claim 70, characterized in that, The terminal device also includes a second processing unit. The second processing unit is used to determine whether to perform the first operation based on the monitoring results of the performance monitoring.

72. The terminal device as described in claim 71, characterized in that, The terminal device also includes a first transmitting unit. The first sending unit is configured to send first indication information to the network device, the first indication information being used to indicate the first operation.

73. The terminal device as described in claim 71, characterized in that, The receiving unit is further configured to receive second indication information sent by the network device, the second indication information being used to indicate the first operation.

74. The terminal device as described in claim 73, characterized in that, The terminal device also includes a second transmitting unit. The second sending unit is used to send third indication information to the network device, the third indication information being used to indicate the monitoring results of the performance monitoring.

75. The terminal device as described in any one of claims 51-74, characterized in that, The terminal device also includes a third transmitting unit. The third sending unit is configured to send a fourth indication message to the network device, the fourth indication message being used to trigger performance monitoring of the first SSB; or The receiving unit is configured to receive a fifth indication message sent by the network device, the fifth indication message being used to trigger performance monitoring of the first SSB.

76. A network device, characterized in that, include: A sending unit is configured to send a first signal to a terminal device, wherein the first signal and / or a first rule are used to perform performance monitoring on a first SSB, and the first rule is used to indicate the transmission mode of the first signal. The synchronization signal in the first SSB and the PBCH in the first SSB are superimposed on the same time-frequency resources for transmission.

77. The network device as described in claim 76, characterized in that, The first signal includes a second SSB, wherein the resources occupied by the synchronization signal in the second SSB and the resources occupied by the PBCH in the second SSB do not overlap in the time domain.

78. The network device as described in claim 77, characterized in that, The sequence corresponding to the synchronization signal in the first SSB is the same as the sequence corresponding to the synchronization signal in the second SSB; and / or The information carried by the PBCH in the first SSB is the same as the information carried by the PBCH in the second SSB.

79. The network device as described in claim 77 or 78, characterized in that, The first SSB and the second SSB are transmitted in a time-division multiplexing and / or frequency-division multiplexing manner.

80. The network device as described in any one of claims 77-79, characterized in that, The performance monitoring of the first SSB includes monitoring the synchronization performance of the first SSB. The performance monitoring is based on the estimated reception time of the first SSB and the reception time of the first SSB. The estimated reception time of the first SSB is determined based on the reception time of the second SSB and a first time interval between the transmission time of the first SSB and the transmission time of the second SSB.

81. The network device as described in claim 80, characterized in that, The first time interval is determined based on one or more of the following information: predefined information; preconfiguration information; information carried by the PBCH in the second SSB.

82. The network device as described in any one of claims 77-81, characterized in that, The performance monitoring of the first SSB includes monitoring the performance of detecting the synchronization signal sequence in the first SSB. The performance monitoring is based on the target information associated with the second SSB and the target information indicated by the synchronization signal sequence in the first SSB.

83. The network device as described in claim 82, characterized in that, The target information associated with the second SSB includes one or more of the following: The target information indicated by the synchronization signal sequence in the second SSB; The target information indicated by PBCH in the second SSB.

84. The network device as described in claim 82 or 83, characterized in that, During multiple rounds of transmission of the first SSB and the second SSB, the target information associated with the first SSB in each round of transmission is different, the target information associated with the second SSB in each round of transmission is different, and in each round of transmission, the target information associated with the first SSB and the target information associated with the second SSB are the same.

85. The network device as described in any one of claims 76-84, characterized in that, The first signal includes the first SSB, and the first rule is used to indicate the transmission mode of the plurality of first SSBs to which the first SSB belongs.

86. The network device as described in claim 85, characterized in that, The first rule is used to indicate one or more of the following: The second time interval between two first SSBs in the plurality of first SSBs; The information indicated by the PBCH in each of the plurality of first SSBs; The target information indicated by the synchronization signal sequence in each of the plurality of first SSBs.

87. The network device as described in claim 86, characterized in that, The two first SSBs include a reference SSB and the first SSB. The performance monitoring of the first SSB includes performance monitoring of the synchronization performance of the first SSB. The performance monitoring is based on the estimated reception time of the first SSB and the reception time of the first SSB. The estimated reception time of the first SSB is determined based on the reception time of the reference SSB and a second time interval between the transmission time of the first SSB and the transmission time of the reference SSB.

88. The network device as described in claim 86 or 87, characterized in that, The performance monitoring of the first SSB includes monitoring the performance of detecting the target information indicated by the synchronization signal sequence in the first SSB. The performance monitoring is based on the target information obtained by detecting the synchronization signal sequence in each of the plurality of first SSBs and the target information indicated by the first rule.

89. The network device as described in any one of claims 77-88, characterized in that, The performance monitoring of the first SSB includes monitoring the demodulation performance of the PBCH in the first SSB. The performance monitoring is determined based on the target bitstream and the bitstream obtained by demodulating the PBCH in the first SSB. The target bitstream includes one or more of the following: The bit stream obtained by demodulating PBCH in the second SSB; Predefined bitstream; The bit stream indicated by the network device.

90. The network device as described in any one of claims 77-89, characterized in that, The performance monitoring of the first SSB includes monitoring the demodulation performance of the PBCH in the first SSB, and the performance monitoring is based on the BLER obtained by decoding the channel through which the first SSB is transmitted.

91. The network device as described in any one of claims 77-90, characterized in that, The first signal includes the first SSB and the second SSB. The first rule is used to indicate the transmission mode of the plurality of first SSBs to which the first SSB belongs. The time domain position of the second SSB is earlier than the time domain position of the plurality of first SSBs.

92. The network device as described in claim 91, characterized in that, In the second SSB, PBCH is used to indicate one or more of the following: The target bitstream used to monitor the PBCH demodulation performance in the first SSB; The second time interval between two first SSBs among the plurality of first SSBs indicated by the first rule; The target information associated with the synchronization signal sequence in each of the plurality of first SSBs indicated by the first rule.

93. The network device as described in claim 91, characterized in that, Predefined and / or preconfigured information is used to indicate one or more of the following: The target bitstream used to monitor the PBCH demodulation performance in the first SSB; The second time interval between two first SSBs among the plurality of first SSBs indicated by the first rule; The target information associated with the synchronization signal in each of the plurality of first SSBs indicated by the first rule.

94. The network device according to any one of claims 82-86, 88, 92, and 93, characterized in that, The target information is determined based on the cell identifier of the cell associated with the first SSB.

95. The network device as described in any one of claims 76-94, characterized in that, If the performance monitoring results indicate that the performance of the first SSB is below a threshold, a first operation is triggered, wherein the first operation includes one of the following: Send a third SSB for accessing the cell, wherein the resources occupied by the synchronization signal in the third SSB and the resources occupied by the PBCH in the third SSB do not overlap in the time domain. The model for receiving the first SSB is switched from the first model to the second model, where the first model is used for the terminal device to receive the first SSB.

96. The network device as described in claim 95, characterized in that, The network device also includes: The first receiving unit is configured to receive first indication information sent by the terminal device, wherein the first indication information is used to indicate the first operation.

97. The network device as described in claim 96, characterized in that, The network device also includes: The first processing unit is used to determine the first operation based on the monitoring results of the performance monitoring.

98. The network device as described in claim 97, characterized in that, The transmitting unit is further configured to: Send a second instruction message to the terminal device, the second instruction message being used to instruct the first operation.

99. The network device as described in claim 98, characterized in that, The network device also includes: The second receiving unit is used to receive third indication information sent by the terminal device, the third indication information being used to indicate the monitoring results of the performance monitoring.

100. The network device as described in any one of claims 76-99, characterized in that, The network device also includes: The third receiving unit is configured to receive fourth indication information sent by the terminal device, the fourth indication information being used to trigger performance monitoring of the first SSB; or The sending unit is used to send a fifth indication information to the terminal device, the fifth indication information being used to trigger performance monitoring of the first SSB.

101. A terminal device, characterized in that, The device includes a transceiver, a memory, and a processor. The memory stores a program, and the processor invokes the program in the memory and controls the transceiver to receive or send signals so that the terminal device performs the method as described in any one of claims 1-25.

102. A network device, characterized in that, The device includes a transceiver, a memory, and a processor. The memory stores a program, and the processor invokes the program in the memory and controls the transceiver to receive or transmit signals so that the network device performs the method as described in any one of claims 26-50.

103. An apparatus, characterized in that, Includes a processor for calling a program from memory to cause the apparatus to perform the method as claimed in any one of claims 1-25, or to perform the method as claimed in any one of claims 26-50.

104. A chip, characterized in that, Includes a processor for calling a program from memory, causing a device on which the chip is mounted to perform the method as claimed in any one of claims 1-25, or to perform the method as claimed in any one of claims 26-50.

105. A computer-readable storage medium, characterized in that, It contains a program that causes a computer to perform the method as described in any one of claims 1-25, or the method as described in any one of claims 26-50.

106. A computer program product, characterized in that, Includes a program that causes a computer to perform the method as claimed in any one of claims 1-25, or to perform the method as claimed in any one of claims 26-50.

107. A computer program, characterized in that, The computer program causes the computer to perform the method as described in any one of claims 1-25, or the method as described in any one of claims 26-50.

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