Communication method, terminal device and network device

Abstract

Provided are a communication method, a terminal device and a network device. The communication method comprises: a terminal device receiving first information sent by a network device, wherein the first information comprises a synchronization signal / physical broadcast channel block (SSB)-based measurement timing configuration (SMTC), and the SMTC is used for detecting an on-demand SSB. Therefore, the terminal device can use the SMTC to execute a measurement operation for the on-demand SSB, thereby meeting the measurement requirements of the on-demand SSB.

Description

Communication method, terminal device and network device TECHNICAL FIELD

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

[0002] Before performing cell configuration, a terminal device needs to perform cell measurement by using a synchronization signal broadcast channel block (SS / PBCH block, SSB). The SSB is crucial for the terminal device to detect and synchronize a cell in a cellular network, and can affect the communication network. Therefore, how to improve the detection performance of the SSB becomes a problem to be solved.

[0003] SUMMARY

[0004] The present application provides a communication method, a terminal device and a network device. The following introduces each aspect of the present application.

[0005] In a first aspect, a communication method is provided, comprising: receiving, by a terminal device, first information sent by a network device, wherein the first information comprises a SSB measurement timing configuration (SMTC), and the SMTC is used for detecting an on-demand SSB.

[0006] In a second aspect, a communication method is provided, comprising: sending, by a network device, first information to a terminal device, wherein the first information comprises a SSB measurement timing configuration (SMTC), and the SMTC is used for detecting an on-demand SSB.

[0007] In a third aspect, a terminal device is provided, comprising: a receiving unit configured to receive first information sent by a network device, wherein the first information comprises a SSB measurement timing configuration (SMTC), and the SMTC is used for detecting an on-demand SSB.

[0008] In a fourth aspect, a network device is provided, comprising: a sending unit configured to send first information to a terminal device, wherein the first information comprises a SSB measurement timing configuration (SMTC), and the SMTC is used for detecting an on-demand SSB.

[0009] In a fifth aspect, a terminal device is provided, comprising a processor, a memory and a transceiver, wherein the memory is configured to store one or more computer programs, and the processor is configured to invoke the computer programs in the memory to enable the terminal device to perform some or all steps in the method of the first aspect.

[0010] In a sixth aspect, a network device is provided, which includes 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 to enable the network device to perform some or all of the steps in the method of the second aspect.

[0011] In a seventh aspect, the embodiments of the present application provide a communication system, which includes the terminal device and / or the network device described above. In some implementations, the communication system further includes other devices interacting with the terminal device and / or the network device in the schemes provided by the embodiments of the present application.

[0012] In an eighth aspect, the embodiments of the present application provide a computer-readable storage medium, which stores a computer program, and the computer program enables the terminal device and / or the network device to perform some or all of the steps in the methods of the above aspects.

[0013] In a ninth aspect, the embodiments of the present application provide a computer program product, which includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to enable the terminal device and / or the network device to perform some or all of the 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, the embodiments of the present application provide a chip, which includes a memory and a processor, and the processor can invoke and run a computer program from the memory to implement some or all of the steps described in the methods of the above aspects.

[0015] In the embodiments of the present application, the network device sends the first information to the terminal device, and the first information includes the SMTC. Since the SMTC can be used for the detection of the on-demand SSB, the terminal device can perform the measurement operation for the on-demand SSB by using the SMTC, thereby meeting the measurement requirement of the on-demand SSB. BRIEF DESCRIPTION OF DRAWINGS

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

[0017] FIG. 2 is a schematic flowchart of a communication method according to an embodiment of the present application.

[0018] FIG. 3 is a schematic flowchart of a communication method according to another embodiment of the present application.

[0019] FIG. 4 is a schematic block diagram of a terminal device according to an embodiment of the present application.

[0020] FIG. 5 is a schematic block diagram of a network device according to an embodiment of the present application.

[0021] Fig. 6 is a schematic block diagram of an apparatus for communication according to an embodiment of the present application. DETAILED DESCRIPTION

[0022] Communication system

[0023] The technical solutions in the present application will be described below with reference to the drawings. In order to facilitate understanding, first, the communication terms and communication processes that may be involved in the embodiments of the present application will be introduced with reference to Fig. 1.

[0024] 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 provide communication coverage for a specific geographic area and can communicate with the terminal device 120 located in the coverage area.

[0025] Fig. 1 exemplarily shows one network device 110 and two terminal devices 120. Alternatively, the wireless communication system 100 can include a plurality of network devices 100, and each network device 100 can include other numbers of terminal devices 110 within its coverage. In addition, the wireless communication system 100 can also include other network entities such as a network controller, a mobility management entity, etc. alternatively.

[0026] In the embodiments of the present application, the terminal device can also be referred to as a user equipment (UE), an access terminal, a subscriber unit, a subscriber 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 device, a wireless communication device, a user agent, or a user apparatus. The terminal device can be, for example, a device that provides voice and / or data connectivity for a user in a device-to-device, device-to-thing, and device-to-machine manner, and can be used to connect people, things, and machines, such as household appliances, sensors, electronic tags, etc. with wireless connection function. The terminal device can also be a wireless terminal in a smart home, a wireless terminal in an IWSN, a wireless terminal in smart logistics and smart warehousing, 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, etc.

[0027] The network device can be a device for communicating with the terminal device. The network device can also be an access network device or a radio access network device, for example, the network device 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 the terminal device to the wireless network. The base station can cover various names in the following or can be replaced by the following names, for example: node B (NodeB), evolved node B (eNB), next generation node B (gNB), relay station, access point, 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), centralized 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 arranged in the foregoing device or apparatus. The base station can also be a mobile switching center and a device that undertakes the function of a base station in device-to-device (D2D), vehicle-to-everything (V2X), machine-to-machine (M2M) communication, network side device in 6G network, device that undertakes the function of a base station in future communication system, etc. The base station can support the network of the same or different access technology. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network device.

[0028] 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.

[0029] The network device and the terminal device can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on water; and can also be deployed on airplanes, balloons and satellites in the air. The scene in which the network device and the terminal device are located is not limited in the embodiments of the present application.

[0030] In some deployments, the network device can refer to a CU or a DU; or the network device includes a CU and a DU. Optionally, the gNB can include an AAU.

[0031] 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.

[0032] Carrier aggregation

[0033] Carrier aggregation (CA) is a technology to improve the data transmission rate of a wireless communication system. By combining multiple carrier frequency spectrum resources, the total bandwidth is increased to increase the peak data rate of users in uplink and downlink. CA can be used in scenarios involving same frequency bands and different frequency bands. In same frequency band CA, component carriers (CCs) belonging to the same frequency band are aggregated together, where the frequency band can be one of FR1 frequency band or FR2 frequency band. In different frequency band CA, CCs belonging to different frequency bands are aggregated together, where the different frequency bands can include FR1 frequency band and FR2 frequency band, etc.

[0034] CA allows two or more adjacent or non-adjacent CCs to be aggregated to form a wider bandwidth resource, which is collectively used for data scheduling for users. For example, if each carrier bandwidth is 20MHz, by aggregating 5 such carriers, a bandwidth of 100MHz can be obtained, thereby significantly improving the data transmission rate. CA can be classified according to the distribution and combination of spectrum resources, for example, it can include the following types: intra-band contiguous CA, i.e., the aggregated carriers are in the same frequency band and are contiguous; intra-band non-contiguous CA, i.e., the aggregated carriers are in the same frequency band but are not contiguous; inter-band CA, i.e., the aggregated carriers are located in different frequency bands.

[0035] By increasing the effective bandwidth, the data transmission rate of users can be significantly improved, and the system can support more users and higher throughput. CA can effectively utilize scattered spectrum resources and improve the utilization of spectrum resources. In some scenarios, by aggregating carriers of different frequency bands, the coverage performance of the network can be improved.

[0036] The implementation of CA involves multiple technical aspects, such as scheduling and resource management, hardware design and signal processing for multi-carrier support, etc. According to user demand and network conditions, the system using CA dynamically allocates and manages aggregated carriers, and terminal devices and network devices need to support multi-carrier transmission and reception functions.

[0037] In the mobile broadband (MBB) scenario, CA can improve user experience, especially in scenarios with high data rate requirements such as high-definition video streaming, online gaming, etc. In some large-scale Internet of Things (IoT) applications, CA helps to improve network capacity and coverage. In summary, CA provides enterprise users with high-reliability, high-speed wireless network connections.

[0038] SSB

[0039] The SSB plays an important role in the initial access, synchronization and acquisition of broadcast information of the terminal device, such as carrying the cell identity (ID), performing time-frequency synchronization, indicating symbol level / slot level / frame timing, measuring beam signal strength / signal quality, and measuring cell signal strength / signal quality, etc. Among them, the measurement of cell signal strength / signal quality may include, for example, radio resource management (RRM) measurement / channel state information (CSI) measurement, etc. The measurement of beam signal strength / signal quality can be used to perform beam selection, perform beam failure detection, perform beam failure recovery, etc.

[0040] Part or all of information such as a primary synchronization signal (PSS), a secondary synchronization signal (SSS), a physical broadcast channel (PBCH), and a demodulation reference signal (DMRS) is included in the SSB. Among them, the PBCH carries a master information block (MIB), and the MIB information can include a control resource set (CORESET) corresponding to a search space of a physical downlink control channel (PDCCH). The PDCCH is a PDCCH in a Type-0 format, which is used to carry a system information block (SIB) 1. The terminal device can determine the PDCCH based on the MIB information, and then acquire the SIB1 on the corresponding physical downlink shared channel (PDSCH) based on the PDCCH. The SIB1 provides key information required by the terminal device in initial access and normal operation, and can ensure that the terminal device correctly synchronizes, selects a suitable cell, performs random access, and acquires basic configuration parameters of the network. Through the SIB1, the terminal device can efficiently communicate with the network device to ensure stable and reliable connection. The SIB1 includes key system information required by the terminal device to access the network, such as including public land mobile network (PLMN) information, cell selection information, time and frequency information, access parameters, power control information, cell broadcast information, public alarm information, and other information. Other information includes, for example, cell access restrictions, registration area related information, and the like.

[0041] SSB transmission mode

[0042] In the CA scenario, in addition to the primary cell (PCell), the system also configures one or more secondary cells (SCells), and these cells collectively provide higher data rates and better coverage for users.

[0043] In the 5G next radio (NR) system, SSB is not usually transmitted on SCell. SSB is mainly transmitted on PCell, and SCell does not need to transmit SSB because the terminal device can be synchronized and initially accessed through the SSB on PCell. When the terminal device completes synchronization and initial access through the SSB on PCell, the SCell can be configured and activated through radio resource control (RRC) signaling or medium access control (MAC) control element (CE), etc., thereby providing flexible CA and cell management. For example, the SCell is added, modified or released through RRC connection reconfiguration; for another example, the SCell is activated or deactivated through the MAC CE. In this way, in the case of limited spectrum resources, unnecessary SSB transmission can be reduced, thereby improving spectrum efficiency and reducing the power consumption of the network device and the terminal device, especially the power consumption of the network device.

[0044] Although SSB is not usually transmitted on SCell, in some specific scenarios, SSB may need to be transmitted on SCell, for example, in some standalone deployment scenarios, SCell may need to transmit SSB to support synchronization and access of the terminal device. For another example, in some complex handover scenarios, transmitting SSB on SCell can help the terminal device to complete inter-cell handover more smoothly.

[0045] Cell measurement

[0046] Before a terminal device is configured with an SCell, the terminal device considers it as a neighbor cell and performs neighbor cell measurement. When performing neighbor cell measurement, the terminal device first needs to identify and measure the signal strength and quality of the neighbor cell. These measurements help the network device determine whether to configure a certain cell as an SCell of the terminal device. The terminal device scans the frequency spectrum to discover all possible neighbor cells and performs measurements of the signal strength, such as the reference signal received power (RSRP), and the signal quality, such as the reference signal received quality (RSRQ) and the signal to interference plus noise ratio (SINR), of the discovered neighbor cells. In order to perform these measurements, the terminal device needs to operate according to a specific timing and configuration, which is the SMTC. The SMTC defines the measurement periodicity, the measurement window, the SSB time-frequency location, and the offset of the measurement window relative to the reference time, and the like in the measurement object (MO). The terminal device performs measurements within the corresponding time interval, time period, frequency band, offset, and the like, to ensure that the measurement operation does not conflict with the activities of other terminal devices. That is, the terminal device needs to measure the neighbor cell based on the SMTC corresponding to the MO.

[0047] The MO is used to indicate the object and parameters to be measured, such as including the frequency band and cell that the terminal device needs to measure. The MO includes the SSB measurement configuration, such as the SMTC, for indicating how the terminal device performs SSB measurement. The SMTC includes the measurement timing of the SSB, such as the measurement periodicity, the measurement time window, the starting measurement time, and the like, for the terminal device to perform SSB measurement.

[0048] When the terminal device performs SSB measurement of the neighbor cell, the terminal device receives the MO sent by the network device and obtains the SMTC in the MO, and the network device can send the MO and the SMTC to the terminal device through, for example, RRC signaling. After the terminal device obtains the SMTC, it performs frequency scanning, that is, scans the neighbor cell based on the obtained frequency information. Then, the terminal device performs measurement within a specified time period, that is, according to the configuration in the SMTC, performs SSB measurement within the specified measurement window based on the specified measurement periodicity. After the measurement is completed, the terminal device reports the measurement result to the network device, and the network device determines whether to configure the cell as an SCell of the terminal device according to the measurement result.

[0049] As an example, the specific configurations of MO and SMTC sent by the network device to the terminal device can include the parameters shown in Table 1 and their corresponding contents.

[0050] Table 1

[0051] As shown in Table 1, after receiving the configuration information, the terminal device starts a measurement every 20 ms and performs SSB measurement on all neighboring cells in the frequency band n78 within the next 5 ms.

[0052] In the 5G NR network, the terminal device needs to consider the SCell as a neighboring cell and perform SSB measurement before the SCell is configured, and this process is defined by SMTC in the MO, including information such as measurement period, measurement window, measurement frequency, and offset. Through these measurements, the network device determines whether to configure the cell as an SCell for the terminal device, thereby optimizing network performance and user experience.

[0053] In the 5G NR network, during the configuration and activation of the SCell, such as from cell discovery and cell measurement to cell configuration and activation, from the configuration instruction of the network device to the specific operation performed by the terminal device, multiple steps are involved. As an example, the configuration and activation of the SCell can include some or all of the following steps.

[0054] In step 1, neighboring cell measurement

[0055] Before configuring the SCell, the terminal device first needs to discover and measure the neighboring cell. The terminal device obtains the MO, for example, the network device sends the MO to the terminal device through RRC signaling to specify the frequency band and cell information that needs to be measured. The MO includes SMTC, which indicates that the terminal device measures the SSB of the neighboring cell within a specific time window. The terminal device measures the SSB of the neighboring cell according to the MO and SMTC, collects signal strength such as RSRP, and signal quality such as RSRQ, SINR, and other information. The terminal device reports the measurement results to the network device, so that the network device can make cell configuration decisions based on these results.

[0056] In step 2, SCell configuration

[0057] The network device sends an RRC connection reconfiguration message to the terminal device, which includes configuration information of the SCell, such as the frequency band and bandwidth of the SCell, the physical cell identification (PCI) of the SCell, the downlink and uplink configuration of the SCell, etc. After receiving the RRC connection reconfiguration message, the terminal device configures the relevant parameters of the SCell according to the information in the RRC connection reconfiguration message.

[0058] In step 3, activation / deactivation of SCell

[0059] After the SCell configuration is completed, the network device can dynamically activate or deactivate the SCell as needed to optimize resource utilization and user experience. The activation and deactivation process is implemented through a MAC CE. The MAC CE belongs to special control signaling used to transmit control information of the MAC layer. The processing delay of the MAC CE is smaller than that of the RRC layer control signaling, and the SCell can be activated faster.

[0060] After receiving the activation command, the terminal device starts data transmission on the SCell, including starting physical layer processing and resource scheduling of the SCell.

[0061] When the network device determines that the SCell is no longer needed, it sends a deactivation command to the terminal device through a MAC CE. After receiving the deactivation command, the terminal device stops data transmission on the SCell and releases the related resources.

[0062] The SCell configuration and activation process is part of CA in 5G NR, aiming to optimize the utilization of spectrum resources and improve network performance and user experience. Through neighbor cell measurement, configuration of SCell parameters, and dynamic activation and deactivation of SCell, the network device can flexibly manage spectrum resources, provide higher data transmission rates and better service quality, and is crucial for optimizing network deployment and operation and meeting user needs.

[0063] The network device can periodically send SSBs for terminal devices to maintain synchronization with the network device or perform cell measurements. For terminal devices, since it cannot be guaranteed that every transmission of SSB on the SCell is effectively utilized, it may result in waste of resources.

[0064] To this end, on-demand SSB is proposed. Unlike periodically transmitted SSBs, on-demand SSBs are only transmitted for a period of time. For example, on-demand SSBs can include two cases: one is that the network device transmits SSBs for a period of time for terminal devices to perform SSB detection, and the network device can indicate the information of the period of time to the terminal device through control signaling such as RRC signaling or MAC CE; the other is that the terminal device requests SSBs from the network device on demand, and the network device can transmit SSBs based on the request of the terminal device. In this way, resource waste can be reduced.

[0065] To meet the measurement requirement of the on-demand SSB, the embodiment of the present application provides a communication method, by adding SSB type indication information for indicating whether the SSB is an on-demand SSB in the SMTC, so as to facilitate the terminal device to identify the SMTC for the on-demand SSB and perform the measurement operation for the on-demand SSB based on the SMTC.

[0066] FIG. 2 is a schematic flowchart of the communication method according to the embodiment of the present application. The method 200 shown in FIG. 2 can be performed by the terminal device and the network device. As shown in FIG. 2, the method 200 includes part or all of the following steps.

[0067] In step 210, the network device sends the first information to the terminal device.

[0068] Correspondingly, in step 220, the terminal device receives the first information sent by the network device.

[0069] The first information includes the SMTC. For example, the first information is carried in the RRC signaling. For another example, the first information is the MO, and the MO includes the SMTC.

[0070] In the embodiment of the present application, the SMTC can be used for the detection of the on-demand SSB, so that the terminal device can perform the measurement operation for the on-demand SSB by using the SMTC, thereby meeting the measurement requirement of the on-demand SSB.

[0071] In some implementations, the terminal device can further receive SSB type indication information, and the SSB type indication information is used for indicating whether the SMTC is for the detection of the on-demand SSB, or in other words, the SSB type indication information is used for indicating whether the SMTC is used for the detection of the on-demand SSB. For example, the SSB type indication information has different values, which can represent different SSB types. Illustratively, when the SSB type indication information is 1 or YES, it indicates that the SMTC is for the detection of the on-demand SSB; when the SSB type indication information is 0 or NO, it indicates that the SMTC is not for the detection of the on-demand SSB.

[0072] Optionally, the SSB type indication information is carried in the first information, that is, the SSB type indication information is included in the first information. At this time, the SSB type indication information and the SMTC are both carried in the first information. Alternatively, the SSB type indication information can also be carried in other signaling, such as other RRC signaling related to the on-demand SSB.

[0073] The terminal device can determine whether the SMTC is used for the detection of the on-demand SSB based on the on-demand SSB type indication information, so as to identify the SMTC for the on-demand SSB and perform the measurement operation for the on-demand SSB by using the SMTC.

[0074] In a case where the SSB type indication information indicates that SMTC is used for detecting on-demand SSB and the cell has not been configured, the cell can be measured by the SMTC. As an example, in a case where the first information is MO, after adding SMTC for on-demand SSB in the configuration of the MO, the specific content of the configuration in the MO can be as follows.

[0075] Before the network device configures the cell to the terminal device, the terminal device regards the cell as a neighbor cell, and the terminal device needs to measure the cell according to the SMTC in the received first information. Optionally, the SMTC can further include one or more of the following information: a measurement period of SSB, a measurement window of SSB, a measurement frequency of SSB, and an offset of the measurement window relative to a reference time.

[0076] The measurement period in the SMTC is used to indicate how long the terminal device needs to perform SSB measurement once, for example, common measurement periods include 20 ms, 40 ms, etc. The measurement frequency information in the SMTC, i.e., frequency band information, is used to indicate which frequency band the terminal device should perform SSB measurement on, and the SSB measurement can involve one or more frequency bands. The measurement window in the SMTC is used to indicate which time period in the measurement period the terminal device should perform SSB measurement. In addition, in order to reduce the impact on other operations of the terminal device, the length of the measurement window can usually be set to be short. The SSB offset value in the SMTC is used to indicate the offset of the SSB measurement window relative to a certain reference time, so that the measurement window is aligned with the transmission time of the SSB.

[0077] As an example, the specific content of the first information can be as follows, here taking the measurement period as 20 ms, the measurement window as 5 ms, the measurement frequency as 36000 Hz, the offset as 4 as an example, and adding SSB type indication information (ssbType) in the SMTC to indicate whether the SMTC is for on-demand SSB.

[0078] When the terminal device switches from one cell to another cell, it is no longer necessary to perform SSB measurement on the previous cell, or in a case where the network device determines to stop using a certain cell, the network device maliciously instructs the terminal device to stop performing SSB measurement using the current SMTC, thereby releasing related resources. In related technologies, the network device can send RRC signaling to the terminal device to inform the terminal device to stop using the current SMTC for SSB measurement. As an example, the specific content of the RRC signaling can be as follows:

[0079] RRCConnectionReconfiguration{

[0080] releaseSMTC:true

[0081] }

[0082] After the terminal device receives the RRC signaling, the terminal device stops measuring based on the current SMTC configuration and releases resources related to the SMTC, for example, including stopping related measurement timers and processes.

[0083] After the SMTC is configured, if the SMTC is ended through RRC signaling, since the RRC signaling packet is large, a large amount of network resources need to be consumed, and since the processing delay of the RRC layer control signaling is large, the terminal device can not release the SMTC resources in time, thereby affecting the network performance.

[0084] Since the on-demand SSB is transmitted within a period of time, in some implementations, for example, as shown in FIG. 3, the method 200 can further include step 230.

[0085] In step 230, the terminal device releases the resources of the SMTC based on the transmission of the on-demand SSB.

[0086] The following provides several ways for releasing the resources of the SMTC, thereby reducing the delay and saving network resources. Here, releasing the resources of the SMTC, for example, means stopping detecting the SSB using the SMTC resources.

[0087] Method 1

[0088] The terminal device can release the resources of the SMTC when the transmission of the on-demand SSB ends. Since the transmission of the on-demand SSB is within a period of time, when the transmission of the on-demand SSB ends, the terminal device can release the resources of the SMTC.

[0089] Optionally, the terminal device can determine whether the transmission of the on-demand SSB ends based on the signaling related to the on-demand SSB sent by the network device.

[0090] For example, the network device can send third information to the terminal device, the third information being used to indicate the transmission end time of the on-demand SSB. The third information is also used to indicate the terminal device to release the resources of the SMTC, for example, the frequency resources and / or time resources occupied by the SMTC. Accordingly, the terminal device can release the resources of the SMTC when the transmission of the on-demand SSB ends or when a preset time length after the transmission of the on-demand SSB ends after receiving the third information. The preset time length can be, for example, a protocol agreement or sent by the network device.

[0091] Way 2

[0092] The network device can send the second information to the terminal device, and correspondingly, the terminal device receives the second information sent by the network device. The second information is used to indicate the activation of the current cell. For example, the second information can be a MAC CE.

[0093] In this implementation mode, the second information is also used to instruct the terminal device to release the resources of the SMTC, such as the frequency resources and / or time resources occupied by the SMTC. When the terminal device detects the SSB according to the SMTC, in the case of on-demand SSB, the terminal device can end the corresponding SMTC according to the activation of the current cell and release the resources of the SMTC. This is because the activation of the cell indicates that the configuration of the cell has been completed, that is, the terminal device may have detected the SSB and reported the measurement result to the network device, and the network device has configured the cell to the terminal device, at this time, the terminal device can not need to perform SSB detection, and therefore can release the resources of the SMTC, without waiting for the RRC signaling indicating the release of the SMTC to release the resources of the SMTC, so that the terminal device releases the unnecessary resources in time and saves network resources.

[0094] Way 3

[0095] The first information can also include measurement time information, which is used to instruct the terminal device to release the resources of the SMTC, such as the frequency resources and / or time resources occupied by the SMTC.

[0096] The terminal device can end the corresponding SMTC according to the measurement time information in the first information and release the resources of the SMTC, without waiting for the RRC signaling indicating the release of the SMTC to release the resources of the SMTC, so that the terminal device releases the unnecessary resources in time and saves network resources.

[0097] The measurement time information can be pre-agreed, such as protocol specified, or configured through high-layer signaling, or calculated by the terminal device based on related information.

[0098] In some implementation modes, the measurement time information can include the number of measurement periods of on-demand SSB.

[0099] For example, the number of measurement periods is determined based on the transmission duration of the on-demand SSB and the duration of the measurement period.

[0100] Assuming the number of the measurement periods in the measurement time information is N, the terminal device determines to end the SSB detection based on the SMTC after N periods of SSB detection. If the transmission duration of the on-demand SSB is M, that is, the on-demand SSB ends after the transmission duration M, N can be determined based on M and the measurement period of the on-demand SSB, for example, N is equal to the length of the measurement period of the on-demand SSB divided by M.

[0101] For another example, the number of the measurement periods is determined based on the maximum number of SSBs for combined detection.

[0102] Assuming the number of the measurement periods in the measurement time information is N, and the terminal device supports a maximum of 4 SSBs for combined detection when performing SSB detection, N can be set to 4. In combined detection, the detection result of a preceding SSB can be used for the detection of a following SSB, for example, in the case where the maximum number of SSBs is 8, SSB0 to SSB3 can be combined for detection, or SSB4 to SSB7 can be combined for detection.

[0103] The value of N can be a constant, or can change according to changes in other information.

[0104] In some other implementations, the measurement time information can directly include the effective duration of the SMTC.

[0105] For example, the effective duration of the SMTC can be determined based on the transmission duration of the on-demand SSB. Since the on-demand SSB stops transmitting after transmitting for a period of time, the terminal device can release the resources of the SMTC after the measurement of the on-demand SSB ends, and thus the effective duration of the SMTC can be equal to the transmission duration of the on-demand SSB.

[0106] For another example, the effective duration of the SMTC is determined based on the measurement period of the on-demand SSB and the maximum number of SSBs for combined detection. Assuming the number of the measurement periods of the on-demand SSB is N, and the terminal device supports a maximum of 4 SSBs for combined detection when performing SSB detection, the effective duration of the SMTC can be 4N.

[0107] As an example, the specific content of the first information can be as follows, which is taken as an example of a measurement period of 20 ms, a measurement window of 5 ms, a measurement frequency of 36000 Hz, and an offset of 4, and the measurement time information is added in the SMTC, for example, the number of measurement periods or the effective duration of the SMTC.

[0108] It should be noted that in the embodiments of the present application, the first information can include both the SSB type indication information and the measurement time information; can include only one of the SSB type indication information and the measurement time information; or the first information does not include the SSB type indication information and the measurement time information, but determines whether the SMTC in the first information is used to detect the on-demand SSB and when to release the resource of the SMTC through other manners.

[0109] For example, the first information includes the SSB type indication information and does not include the measurement time information, the terminal device determines whether the SMTC in the first information is for the on-demand SSB through the SSB type indication information, and in the case that the SMTC is for the on-demand SSB, determines when to release the resource of the SMTC through other manners, for example, determines when to release the resource of the SMTC based on the RRC signaling sent by the network device, the transmission end time of the on-demand SSB, or the second information.

[0110] For another example, the first information includes the measurement time information and does not include the SSB type indication information, the terminal device can determine whether the SMTC in the first information is for the on-demand SSB through other manners, and in the case that the SMTC is for the on-demand SSB, determines when to release the resource of the SMTC based on the measurement time information in the first information.

[0111] For another example, the first information includes the SSB type indication information and the measurement time information, the terminal device determines whether the SMTC in the first information is for the on-demand SSB through the SSB type indication information, and in the case that the SMTC is for the on-demand SSB, releases the resource of the SMTC after the time length indicated by the measurement time information in the first information ends.

[0112] Of course, the first information can also not include the SSB type indication information and / or the measurement time information, but determines whether the SMTC in the first information is used to detect the on-demand SSB and when to release the resource of the SMTC through other manners.

[0113] As an example, the specific content of the first information is as follows, which is taken as an example with a measurement period of 20ms, a measurement window of 5ms, a measurement frequency of 36000Hz, and an offset of 4, and the first information includes the SSB type indication information and the measurement time information as an example.

[0114] The method embodiments of the present application are described in detail above in combination with FIGS. 2 to 3, and the device embodiments of the present application are described in detail below in combination with FIGS. 4 to 6. 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.

[0115] FIG. 4 is a schematic diagram of a terminal device according to an embodiment of the present application. The terminal device 300 shown in FIG. 4 can include a receiving unit 310. Optionally, the terminal device 300 further includes a processing unit 320.

[0116] The receiving unit 310 is configured to receive first information sent by a network device, the first information including SMTC for measuring a synchronization signal block (SSB); and the first information further including SSB type indication information, the SSB type indication information being used to indicate whether the SMTC is for detection of an on-demand SSB.

[0117] In some implementations, the receiving unit 310 is further configured to receive SSB type indication information, the SSB type indication information being used to indicate that the SMTC is for detection of the on-demand SSB.

[0118] In some implementations, the SSB type indication information is carried in the first information.

[0119] In some implementations, the processing unit 320 is configured to release resources of the SMTC based on transmission of the on-demand SSB.

[0120] In some implementations, the receiving unit 310 is further configured to receive second information sent by the network device, the second information being used to indicate that a current cell is activated; and the processing unit 320 is further configured to release resources of the SMTC based on the second information.

[0121] In some implementations, the receiving unit 310 is further configured to receive third information sent by the network device, the third information being used to indicate a transmission end time of the on-demand SSB; and the processing unit 320 is further configured to release resources of the SMTC at the transmission end time of the on-demand SSB or at a preset time length after the transmission end time of the on-demand SSB based on the third information.

[0122] In some implementations, the first information further includes measurement time information, the measurement time information being used to indicate that the terminal device releases the resources of the SMTC.

[0123] In some implementations, the measurement time information includes a number of measurement periods of the on-demand SSB.

[0124] In some implementations, the number of measurement periods is determined based on a transmission time length of the on-demand SSB and a time length of the measurement period; or the number of measurement periods is determined based on a maximum number of SSBs for combined detection.

[0125] In some implementations, the measurement time information includes a valid time length of the SMTC.

[0126] In some embodiments, the valid duration of the SMTC is determined based on a transmission duration of the on-demand SSB; or the valid duration of the SMTC is determined based on a measurement period of the on-demand SSB and a maximum number of combined detected SSBs.

[0127] In some embodiments, the first information is carried in radio resource control (RRC) signaling, and / or the first information is a measurement object (MO).

[0128] In some embodiments, the SMTC includes one or more of the following information: a measurement period of SSBs, a measurement window of SSBs, a measurement frequency of SSBs, and an offset of the measurement window relative to a reference time.

[0129] FIG. 5 is a schematic diagram of a network device according to an embodiment of the present application. The network device 400 shown in FIG. 5 includes a sending unit 410.

[0130] The sending unit 410 is configured to send first information to a terminal device, the first information including a synchronization signal block (SSB) measurement timing configuration (SMTC) used for detecting an on-demand SSB.

[0131] In some embodiments, the sending unit 410 is further configured to send SSB type indication information to the terminal device, the SSB type indication information indicating that the SMTC is used for detecting the on-demand SSB.

[0132] In some embodiments, the SSB type indication information is carried in the first information.

[0133] In some embodiments, the sending unit 410 is further configured to send second information to the terminal device, the second information indicating that a current cell is activated; and the second information further indicating that the terminal device releases resources of the SMTC.

[0134] In some embodiments, the sending unit 410 is further configured to send third information to the terminal device, the third information indicating an end time of transmission of the on-demand SSB; and the third information further indicating that the terminal device releases resources of the SMTC.

[0135] In some embodiments, the first information further includes measurement time information, the measurement time information indicating that the terminal device releases resources of the SMTC.

[0136] In some embodiments, the measurement time information includes a number of measurement periods of the on-demand SSB.

[0137] In some embodiments, the number of measurement periods is determined based on a transmission duration of the on-demand SSB and a duration of the measurement period; or the number of measurement periods is determined based on a maximum number of SSBs for combined detection.

[0138] In some embodiments, the measurement time information includes an effective duration of the SMTC.

[0139] In some embodiments, the effective duration of the SMTC is determined based on a transmission duration of the on-demand SSB; or the effective duration of the SMTC is determined based on a measurement period of the on-demand SSB and a maximum number of SSBs for combined detection.

[0140] In some embodiments, the first information is carried in radio resource control (RRC) signaling, and / or the first information is a measurement object (MO).

[0141] In some embodiments, the SMTC includes one or more of the following: a measurement period of SSBs, a measurement window of SSBs, a measurement frequency of SSBs, and an offset of the measurement window relative to a reference time.

[0142] It can be understood that the receiving unit 310 may, for example, be the transceiver 530, and the processing unit 320 may, for example, be the processor 510. In addition, the terminal device 300 may, for example, further include the memory 520, as shown in FIG. 6.

[0143] Similarly, the sending unit 410 may, for example, be the transceiver 530. In addition, the network device 400 may, for example, further include the processor 510 and the memory 520, as shown in FIG. 6.

[0144] FIG. 6 is a schematic structural diagram of an apparatus for communication according to an embodiment of the present application. The dashed line in FIG. 6 indicates that the unit or module is optional. The apparatus may, for example, be a chip, a terminal device, or a network device.

[0145] As shown in FIG. 6, the apparatus 500 can include one or more processors 510. The processor 510 can support the apparatus 500 to implement the methods described in the foregoing method embodiments. The processor 510 can be a general purpose processor or a dedicated processor. For example, the processor 510 can be a central processing unit (CPU). Alternatively, the processor 510 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.

[0146] The apparatus 500 can also include one or more memories 520. The memory 520 stores a program that can be executed by the processor 510, so that the processor 510 performs the methods described in the foregoing method embodiments. The memory 520 can be independent of the processor 510, or can be integrated in the processor 510.

[0147] The apparatus 500 can also include a transceiver 530. The processor 510 can communicate with other devices or chips through the transceiver 530. For example, the processor 510 can perform data transceiving with other devices or chips through the transceiver 530.

[0148] The embodiments of the present application provide a communication system. The system includes the terminal device and / or the network device described above. In some implementation manners, the system further includes other devices that interact with the terminal device and / or the network device.

[0149] The embodiments of the present application also 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 device or the network device in the embodiments of the present application.

[0150] The embodiments of the present application also provide a computer program product. The computer program product includes a program. The computer program product 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 device or the network device in the embodiments of the present application.

[0151] The embodiments of the present application further provide a computer program. The computer program can be applied to the terminal or the network device provided by the embodiments of the present application, and the computer program enables a computer to execute the method performed by the terminal device or the network device in the embodiments of the present application.

[0152] 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 description 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.

[0153] 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 it can mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; or it can mean that A and B have an associated relationship.

[0154] 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.

[0155] 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 it can mean that there is an associated relationship between the two, or it can mean an indication and being indicated, configuration and being configured, and the like.

[0156] In the embodiments of the present application, "predefined" or "preconfigured" can be achieved by pre-saving corresponding codes, tables or other ways that can be used to indicate related information in devices such as 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.

[0157] In the embodiments of the present application, the term "and / or" is only a description of the associated relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in this paper generally means that the front and rear associated objects have an "or" relationship.

[0158] In the embodiments of the present application, the "comprising" can mean directly comprising or indirectly comprising. Alternatively, the "comprising" mentioned in the embodiments of the present application can be replaced by "indicating" or "for determining". For example, A comprising B can be replaced by A indicating B, or A for determining B.

[0159] In various embodiments of the present application, the size of the serial number of the above processes does not mean the order of execution, the execution order of each process 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.

[0160] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, 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.

[0161] The units described as separate components can or can not be physically separated, 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 multiple network units. According to actual needs, part or all of the units can be selected to achieve the purpose of the present embodiment.

[0162] 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.

[0163] 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 apparatus. 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.). 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, etc. integrated with one or more available media sets. The available media can be magnetic media such as floppy disk, hard disk, magnetic tape, etc., or optical media such as digital video disc (DVD), or semiconductor media such as solid state disk (SSD), etc.

[0164] 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 communication method characterized by comprising: The method comprises: The terminal device receives first information sent by the network device, wherein the first information comprises synchronization signal broadcast channel block (SSB) measurement timing configuration (SMTC), and the SMTC is used for detecting on-demand SSB.

2. The method of claim 1, wherein, The method further comprises: The terminal device receives SSB type indication information, wherein the SSB type indication information is used for indicating that the SMTC is used for detecting the on-demand SSB.

3. The method of claim 2, wherein, The SSB type indication information is carried in the first information.

4. The method according to any one of claims 1 to 3, characterized in that, The method further comprises: The terminal device releases resources of the SMTC based on transmission of the on-demand SSB.

5. The method of claim 4, wherein, The method further comprises: The terminal device receives second information sent by the network device, wherein the second information is used for indicating that a current cell is activated; and the second information is further used for indicating the terminal device to release resources of the SMTC.

6. The method of claim 4, wherein, The method further comprises: The terminal device releases the resources of the SMTC at the end of the transmission of the on-demand SSB or at the end of a preset time period after the end of the transmission of the on-demand SSB.

7. The method according to any one of claims 1 to 6, characterized in that, The first information further comprises measurement time information, wherein the measurement time information is used for indicating the terminal device to release the resources of the SMTC.

8. The method of claim 7, wherein, The measurement time information comprises a number of measurement periods of the on-demand SSB.

9. The method of claim 8, wherein, The number of measurement periods is determined based on a transmission duration of the on-demand SSB and a duration of the measurement period; or the number of measurement periods is determined based on a maximum number of SSBs for combined detection.

10. The method of claim 7, wherein, The measurement time information comprises an effective duration of the SMTC.

11. The method of claim 10, wherein, The effective duration of the SMTC is determined based on the transmission duration of the on-demand SSB; or the effective duration of the SMTC is determined based on the measurement period of the on-demand SSB and the maximum number of SSBs for combined detection.

12. The method according to any one of claims 1 to 11, characterized in that, The first information is carried in radio resource control (RRC) signaling, and / or the first information is a measurement object (MO).

13. The method according to any one of claims 1 to 12, characterized in that, The SMTC comprises one or more of the following information: a measurement period of SSB, a measurement window of SSB, a measurement frequency of SSB, and an offset of the measurement window relative to a reference time.

14. A communication method, comprising: The method comprises: The network device sends first information to a terminal device, wherein the first information comprises synchronization signal broadcast channel block (SSB) measurement timing configuration (SMTC), and the SMTC is used for detecting on-demand SSB.

15. The method of claim 14, wherein, The method further comprises: The network device sends SSB type indication information to the terminal device, wherein the SSB type indication information is used for indicating that the SMTC is used for detecting the on-demand SSB.

16. The method of claim 15, wherein, The SSB type indication information is carried in the first information.

17. The method according to any one of claims 14 to 16, characterized in that, The method further comprises: The network device sends second information to the terminal device, wherein the second information is used for indicating that a current cell is activated; and the second information is further used for indicating the terminal device to release resources of the SMTC.

18. The method of any one of claims 14-16, wherein, The method further comprises: The network device sends third information to the terminal device, wherein the third information is used for indicating an end time of transmission of the on-demand SSB; and the third information is further used for indicating the terminal device to release the resources of the SMTC.

19. The method according to any one of claims 14 to 18, characterized in that, The first information further comprises measurement time information, the measurement time information being used to indicate the terminal device to release resources of the SMTC.

20. The method of claim 19, wherein, The measurement time information comprises a number of measurement periods of the on-demand SSB.

21. The method of claim 20, wherein, The number of measurement periods is determined based on a transmission duration of the on-demand SSB and a duration of the measurement period, or the number of measurement periods is determined based on a maximum number of SSBs for combined detection.

22. The method of claim 19, wherein, The measurement time information comprises a valid duration of the SMTC.

23. The method of claim 22, wherein, The valid duration of the SMTC is determined based on a transmission duration of the on-demand SSB, or the valid duration of the SMTC is determined based on a measurement period of the on-demand SSB and a maximum number of SSBs for combined detection.

24. The method of any one of claims 14-23, wherein, The first information is carried in radio resource control (RRC) signaling, and / or the first information is a measurement object (MO).

25. The method of any one of claims 14 to 24, wherein, The SMTC comprises one or more of the following information: a measurement period of SSB, a measurement window of SSB, a measurement frequency of SSB, and an offset of the measurement window relative to a reference time.

26. A terminal device, comprising: Comprise: a receiving unit, configured to receive first information sent by a network device, the first information comprising a synchronization signal block (SSB) measurement timing configuration (SMTC), the SMTC being used to detect an on-demand SSB.

27. The terminal device of claim 26, wherein, The receiving unit is further configured to, receive SSB type indication information, the SSB type indication information being used to indicate that the SMTC is used to detect the on-demand SSB.

28. The terminal device of claim 27, wherein, The SSB type indication information is carried in the first information.

29. The terminal device of any one of claims 26 to 28, wherein, Further comprise a processing unit, configured to, release resources of the SMTC based on transmission of the on-demand SSB.

30. The terminal device of claim 29, wherein the receiving unit is further configured to receive second information sent by the network device, the second information being used to indicate to activate a current cell; the processing unit is further configured to release resources of the SMTC based on the second information.

31. The terminal device of claim 29, wherein the receiving unit is further configured to receive third information sent by the network device, the third information being used to indicate a transmission end time of the on-demand SSB; the processing unit is further configured to release resources of the SMTC at the transmission end time of the on-demand SSB or at a preset time duration after the transmission end time of the on-demand SSB based on the third information. The first information further comprises measurement time information, the measurement time information being used to indicate the terminal device to release resources of the SMTC.

32. The terminal device of any one of claims 26 to 31, wherein, The measurement time information comprises a number of measurement periods of the on-demand SSB.

33. The terminal device of claim 32, wherein, The number of measurement periods is determined based on a transmission duration of the on-demand SSB and a duration of the measurement period, or the number of measurement periods is determined based on a maximum number of SSBs for combined detection.

34. The terminal device of claim 33, wherein, The measurement time information comprises a valid duration of the SMTC.

35. The terminal device of claim 32, wherein, ​ 36. The terminal device of claim 35, wherein, The valid duration of the SMTC is determined based on a transmission duration of the on-demand SSB, or the valid duration of the SMTC is determined based on a measurement period of the on-demand SSB and a maximum number of SSBs for combining detection.

37. The terminal device of any one of claims 26 to 36, wherein, The first information is carried in radio resource control (RRC) signaling, and / or the first information is a measurement object (MO).

38. The terminal device of any one of claims 36 to 37, wherein, The SMTC includes one or more of the following information: a measurement period of SSBs, a measurement window of SSBs, a measurement frequency of SSBs, and an offset of the measurement window relative to a reference time.

39. A network device, comprising: Comprising: A sending unit configured to send first information to a terminal device, the first information including a synchronization signal block (SSB) measurement timing configuration (SMTC) for detecting an on-demand SSB.

40. The network device of claim 39, wherein, The sending unit is further configured to, send SSB type indication information to the terminal device, the SSB type indication information indicating that the SMTC is used to detect the on-demand SSB.

41. The network device of claim 40, wherein, The SSB type indication information is carried in the first information.

42. The network device according to any of claims 39-41, wherein, The sending unit is further configured to, send second information to the terminal device, the second information indicating that a current cell is activated, and the second information further indicating that the terminal device releases resources of the SMTC.

43. The network device according to any of claims 39-41, wherein, The sending unit is further configured to, send third information to the terminal device, the third information indicating an end time of transmission of the on-demand SSB, and the third information further indicating that the terminal device releases resources of the SMTC.

44. The network device according to any of claims 39 to 43, wherein, The first information further includes measurement time information, the measurement time information indicating that the terminal device releases resources of the SMTC.

45. The network device of claim 44, wherein, The measurement time information includes a number of measurement periods of the on-demand SSB.

46. The network device of claim 45, wherein, The number of measurement periods is determined based on a transmission duration of the on-demand SSB and a duration of the measurement period, or the number of measurement periods is determined based on a maximum number of SSBs for combining detection.

47. The network device of claim 44, wherein, The measurement time information includes a valid duration of the SMTC.

48. The network device of claim 47, wherein, The valid duration of the SMTC is determined based on a transmission duration of the on-demand SSB, or the valid duration of the SMTC is determined based on a measurement period of the on-demand SSB and a maximum number of SSBs for combining detection. 49.The network device according to any one of claims 39 to 48, characterized in that, The first information is carried in radio resource control (RRC) signaling, and / or the first information is a measurement object (MO).

50. The network device according to any of claims 39-49, wherein, The SMTC includes one or more of the following information: a measurement period of SSBs, a measurement window of SSBs, a measurement frequency of SSBs, and an offset of the measurement window relative to a reference time.

51. A communications device, characterized by Comprising a transceiver, a memory, and a processor, the memory being configured to store a program, the processor being configured to invoke the program in the memory and control the transceiver to receive or send signals, so that the communication device performs the method of any one of claims 1-10 or the method of any one of claims 11-20.

52. An apparatus comprising: A computer program product comprising a computer readable medium having stored thereon a computer program, said computer program causing a computer to perform the method of any one of claims 1 to 10, or the method of any one of claims 11 to 20.

53. A chip, comprising: A computer program product comprising a computer readable medium having stored thereon a computer program, said computer program causing a computer to perform the method of any one of claims 1 to 10, or the method of any one of claims 11 to 20.

54. A computer-readable storage medium, comprising: A computer program product comprising a computer readable medium having stored thereon a computer program, said computer program causing a computer to perform the method of any one of claims 1 to 10, or the method of any one of claims 11 to 20.

55. A computer program product, characterised in that, A computer program product comprising a computer readable medium having stored thereon a computer program, said computer program causing a computer to perform the method of any one of claims 1 to 10, or the method of any one of claims 11 to 20.

56. A computer program, characterized in that, A computer program product comprising a computer readable medium having stored thereon a computer program, said computer program causing a computer to perform the method of any one of claims 1 to 10, or the method of any one of claims 11 to 20.

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