Wireless communication method, terminal device, and network device

Abstract

Provided are a wireless communication method, a terminal device, and a network device. The method comprises: a terminal device receives configuration information of an SSB sent by a network device, the SSB being an on-demand SSB. In this way, a terminal device can know a transmission position of an on-demand SSB, thereby performing SSB-related operations.

Description

Method, terminal device and network device for wireless communication

[0001] The present application claims priority to PCT application No. PCT / CN2024 / 111269, entitled "Method, terminal device and network device for wireless communication" and filed with the China Patent Office on August 9, 2024, the content of which is incorporated herein in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of communication technology, and more particularly, to a method, a terminal device and a network device for wireless communication. BACKGROUND

[0003] To support network energy saving (NES), an on-demand synchronization signal block / physical broadcast channel block (SS / PBCH block, SSB) is proposed in the related art, which is referred to as an on-demand SSB. How a terminal device performs operations related to the on-demand SSB becomes a problem to be solved.

[0004] SUMMARY

[0005] The present application provides a method, a terminal device and a network device for wireless communication. Each aspect of the present application is described below.

[0006] In a first aspect, a method for wireless communication is provided, comprising: receiving, by a terminal device, configuration information of an SSB sent by a network device, the SSB being an on-demand SSB.

[0007] In a second aspect, a method for wireless communication is provided, comprising: sending, by a network device, configuration information of an SSB to a terminal device, the SSB being an on-demand SSB.

[0008] In a third aspect, a terminal device is provided, comprising: a transceiver configured to receive configuration information of an SSB sent by a network device, the SSB being an on-demand SSB.

[0009] In a fourth aspect, a network device is provided, comprising: a transceiver configured to send configuration information of an SSB to a terminal device, the SSB being an on-demand SSB.

[0010] In a fifth aspect, a terminal device is provided, comprising a transceiver, a memory and a processor, the memory is configured to store a program, the processor is configured to invoke the program in the memory and control the transceiver to receive or send signals, so that the terminal device performs the method in the first aspect.

[0011] In a sixth aspect, a network device is provided, comprising a transceiver, a memory and a processor, the memory is configured to store a program, the processor is configured to invoke the program in the memory and control the transceiver to receive or send signals, so that the network device performs the method in the second aspect.

[0012] In a seventh aspect, an apparatus is provided, comprising a processor configured to invoke a program from a memory, so that the apparatus performs the method in any one of the first aspect or the second aspect.

[0013] In an eighth aspect, a chip is provided, comprising a processor configured to invoke a program from a memory, so that the device installed with the chip performs the method in the first aspect or the second aspect.

[0014] In a ninth aspect, a computer readable storage medium is provided, which stores a program, the program causes a computer to perform the method in the first aspect or the second aspect.

[0015] In a tenth aspect, a computer program product is provided, comprising a program, the program causes a computer to perform the method in the first aspect or the second aspect.

[0016] In an eleventh aspect, a computer program is provided, the computer program causes a computer to perform the method in the first aspect or the second aspect.

[0017] In the embodiments of the present application, the network device sends the configuration information of the on-demand SSB to the terminal device, so that the terminal device can know the transmission position of the on-demand SSB, in order to perform the operation related to the SSB. BRIEF DESCRIPTION OF DRAWINGS

[0018] FIG. 1 is an example of a system architecture of a wireless communication system suitable for the embodiments of the present application.

[0019] FIG. 2 is a schematic diagram of carrier aggregation suitable for the embodiments of the present application.

[0020] FIG. 3 is a schematic diagram of the development process of carrier aggregation suitable for the embodiments of the present application.

[0021] FIG. 4 is a schematic diagram of the structure of SSB suitable for the embodiments of the present application.

[0022] FIG. 5 is a schematic diagram of SSB beam sweeping and SSB burst set transmission time suitable for the embodiments of the present application.

[0023] FIG. 6 is a flow diagram of a wireless communication method according to an embodiment of the present application.

[0024] FIG. 7 is a diagram of time for secondary cell configuration and activation according to an embodiment of the present application.

[0025] FIG. 8 is a diagram of resources of SSB and downlink channel according to an embodiment of the present application.

[0026] FIG. 9 is a diagram of a structure of a terminal device according to an embodiment of the present application.

[0027] FIG. 10 is a diagram of a structure of a network device according to an embodiment of the present application.

[0028] FIG. 11 is a diagram of an apparatus for communication according to an embodiment of the present application. DETAILED DESCRIPTION

[0029] The technical solutions in the present application will be described below with reference to the accompanying drawings.

[0030] Wireless communication system

[0031] FIG. 1 is an example diagram of a system architecture of a wireless communication system 100 to which embodiments of the present application can be 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 network coverage for a specific geographic area and can communicate with the terminal device 120 located in the coverage area. The terminal device 120 can access a network, for example, a wireless network, through the network device 110. Optionally, the wireless communication system 100 can further include a network controller, a mobile management entity, and other network entities, which are not limited by the embodiments of the present application.

[0032] It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, for example, a fifth 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, for example, a sixth generation mobile communication system, a satellite communication system, and the like.

[0033] 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 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 providing 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 function, 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 terminal device can be used to act as a base station. For example, the terminal device can act as a scheduling entity, which provides sidelink signals between terminal devices in vehicle to everything (V2X) or device to device (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.

[0034] The network device in the embodiments of the present application can be a device for communicating with a terminal device. The network device can be, for example, an access network device or a radio access network device. For example, the network device can be a base station. The base station can broadly cover various names in the following or replace the following names: Node B (Node B), evolved Node B (eNB), next generation Node B (gNB), relay station, access point, transmitting and receiving point (TRP), transmitting point (TP), 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, and the like. 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.

[0035] Carrier aggregation (CA)

[0036] In order to meet the peak rate of a single terminal device and improve system capacity, CA technology can be used to increase the transmission bandwidth of the system. The CA technology is to combine two or more carriers to form a data channel to increase data capacity. Using the existing network spectrum, the CA technology enables operators to provide higher uplink (UL) and downlink (DL) data rates, thus improving network performance and ensuring high-quality user experience.

[0037] In a 4G system (or LTE system), two to five LTE member carriers, or component carriers (CCs), can be aggregated together to achieve a higher transmission bandwidth, for example, a maximum transmission bandwidth of 100 MHz, thereby effectively improving the uplink and downlink transmission rate. For example, as shown in FIG. 2, five 20 MHz carriers can be aggregated to form a 100 MHz transmission bandwidth, and a terminal device can determine the maximum number of carriers that can be used for uplink and downlink transmission at the same time according to its capability.

[0038] In the LTE system, the CA technology supports continuous or discontinuous carrier aggregation, and the maximum resource that can be used by each carrier is 110 resource elements (REs). Each terminal device uses an independent hybrid automatic repeat request (HARQ) entity on each carrier, and each RE can only be mapped to a specific carrier. The physical downlink control channel (PDCCH) on each carrier is independent of each other, and the design of the LTE release-8 (Rel-8 / R8) can be reused, that is, the PDCCH of each carrier can be used to allocate resources for the physical downlink shared channel (PDSCH) and the physical uplink shared channel (PUSCH) of each carrier, or the PDCCH channel on one carrier can be used to schedule the allocation of uplink and downlink resources of multiple carriers through the carrier indicator field (CIF).

[0039] In the LTE release-10 (Rel-10 / R10), the number of aggregated carriers is increased, for example, up to 5 carriers can be aggregated. And in subsequent versions, the carrier aggregation is also constantly evolving, for example, as shown in FIG. 3, in the 5G system, the capability of carrier aggregation is further enhanced.

[0040] The 5G system (or new radio (NR) system) is rooted in the protocol standards of LTE and Wi-Fi, and is a brand new radio frequency interface and radio frequency access network, which uses the best technology and means in the LTE system to meet the new requirements proposed by standardization organizations. The CA technology makes an important contribution to improving the user data throughput of the LTE system, and will also play an equally important role in the 5G system. In order to increase the capacity, global operators are actively adding CA frequency bands and functions. As an example, as shown in Table 1, different countries and regions design corresponding CA types and functions for different frequency bands.

[0041] Table 1

[0042] After the introduction of CA technology from the LTE-Advanced protocol of 4G, the initial aggregation of 5 carriers, each with a bandwidth of 20MHz, reaches a total bandwidth of 100MHz after aggregation of 5 carriers. Subsequently, it developed to 32 carriers aggregation, and the total bandwidth after aggregation can reach 640MHz. With the development of communication technology, the number of carriers that can be aggregated in the 5G system gradually increases to 16, and the bandwidth of each carrier is larger. The bandwidth of a single carrier in the Sub6G system is up to 100MHz, so 16 carriers can form a bandwidth of 1.6GHz after aggregation. The bandwidth of a single carrier in the millimeter wave frequency band is up to 400MHz, so 16 carriers can form a bandwidth of 6.4GHz after aggregation.

[0043] As mentioned earlier, when multiple carriers are aggregated to work together, they need to coordinate with each other, so these carriers are divided into primary carriers and secondary carriers. Among them, the primary carrier is the carrier used to carry signaling and manage other carriers, and the primary carrier can also be called the primary cell (PCell). The secondary carrier is used to expand the bandwidth and enhance the rate, and the primary carrier can decide when to increase and delete, and the secondary carrier can also be called the secondary cell (SCell). The primary and secondary carriers are relative to the terminal device. For different terminal devices, the primary and secondary carriers used for their work can be different. Moreover, the multiple carriers participating in aggregation can not be limited to the same base station, for example, these carriers can come from adjacent base stations.

[0044] SSB

[0045] In the NR system, each SSB is used for initial access and synchronization, and the SSB is composed of three parts: primary synchronization signals (PSS), secondary synchronization signals (SSS), and physical broadcast channel (PBCH). As an example, as shown in FIG. 4, the SSB structure, SSB occupies 4 OFDM symbols in the time domain, and 240 subcarriers in the frequency domain, i.e. 20 physical resource blocks (PRBs), numbered from 0 to 239.

[0046] An SSB is transmitted by beam sweeping, and a plurality of SSBs are usually transmitted in a cell to complete one beam sweeping so that the SSBs cover the entire service range of the cell. The SSBs required to complete one beam sweeping can form an SSB burst set, or simply an SSB burst. Usually, the transmission configuration of the SSB burst set in time, frequency or space is described by a pattern of the SSB burst set. For example, as shown in FIG. 5, the SSB beam sweeping and the SSB burst set transmission time are shown, wherein (a) of FIG. 5 shows the spatial beam for transmitting each SSB, and (b) of FIG. 5 shows the time domain position for transmitting each SSB. The pattern of the SSB burst set can be different under different frequency bands and configurations. For example, under different frequency bands, the maximum number of SSBs that can be included in one SSB burst set can be 4, 8 and 64, etc., and different SSBs have different SSB indexes. FIG. 5 takes an SSB burst set including 8 SSBs, i.e., SSB 0 to SSB 7, as an example. As an example, Table 2 shows the pattern information of SSB transmission under different sub-carrier space SCSs of SSBs.

[0047] Table 2

[0048] A terminal device can obtain synchronization through an SSB transmitted by a primary cell and perform radio resource management (RRM) measurement. In order to save time-frequency resources and power consumption of a base station, an SSB can not be transmitted in a secondary cell. However, in some cases, due to the different measurement requirements of the secondary cell and the primary cell, the secondary cell can also have SSB transmission.

[0049] Since the terminal device transmits an SSB, it will consume a high amount of energy, and for the purpose of energy saving, the SSB in the secondary cell should not always transmit an SSB, but should transmit an SSB on demand. That is, the network device can configure the SBB to be short-time transmission, that is, the SSB transmission on the secondary cell is only performed in a period of time, which can be determined according to the requirements of the terminal device. Such an SSB is called an on-demand SSB.

[0050] The transmission of the on-demand SSB is for specific terminal devices, and the network device determines whether to transmit the SSB and how to transmit the SSB according to the needs of certain terminal devices in the cell. Although the transmission of the on-demand SSB is for specific terminal devices, the transmission of the on-demand SSB is performed in the entire cell, that is, the transmission of the on-demand SSB is a cell-oriented behavior, or in other words, the transmission of the SSB is a cell-level transmission. Therefore, the SSB transmitted for certain terminal devices can affect the communication of other terminal devices in the cell. Therefore, it is necessary for other terminal devices to know the transmission of the on-demand SSB in the secondary cell. These terminal devices include, for example, terminal devices supporting the on-demand SSB, such as terminal devices including the on-demand SSB service or terminal devices not including the on-demand SSB service, but do not include terminal devices not supporting the on-demand SSB, because terminal devices not supporting the on-demand SSB cannot know that there can be SSB transmission at the resource location.

[0051] Here, the terminal device supporting the on-demand SSB can be, for example, a terminal device supporting a higher protocol version, such as a terminal device in Release 19 and later versions in NR; the terminal device not supporting the on-demand SSB can be, for example, a terminal device supporting a lower protocol version, such as a terminal device in Release 18 and earlier versions in NR. In addition, the terminal device of the on-demand SSB service refers to the transmission of the on-demand SSB triggered for the terminal device, that is, the on-demand SSB can be used for access and / or synchronization of the terminal device, etc., but since the on-demand SSB is transmitted in the entire cell, the transmission of the SSB also affects other terminal devices supporting the on-demand SSB, and the other terminal devices can not currently have the need to use the on-demand SSB for access and / or synchronization, etc.

[0052] To this end, an embodiment of the present application provides a method of wireless communication, and a network device transmits configuration information of an on-demand SSB to a terminal device, so that the terminal device can know the transmission location of the on-demand SSB, in order to perform an operation related to the SSB.

[0053] The embodiments of the present application will be described in detail below with reference to FIG. 6.

[0054] FIG. 6 is a flow diagram of a method of wireless communication provided by an embodiment of the present application. The method 600 shown in FIG. 6 can be performed by a terminal device and a network device.

[0055] Referring to FIG. 6, in step 610, the network device transmits configuration information of an SSB to the terminal device.

[0056] Correspondingly, in step 620, the terminal device receives the configuration information of the SSB transmitted by the network device.

[0057] In some implementations, the configuration information of the SSB can be carried in the configuration information of the secondary cell; or the configuration information of the SSB can be carried in the activation indication information of the secondary cell (such as carried in the media access control (MAC) signaling); or the configuration information of the SSB can be sent to the terminal device independently of the above information, for example, sent to the terminal device in the radio resource control (RRC) signaling, the MAC signaling (for example, MAC CE), the multicast signaling or the broadcast signaling independent of the transmission of the above information, which can be high-layer signaling.

[0058] For example, the terminal device receives the configuration information of the secondary cell sent by the network device, and the configuration information of the SSB is included in the configuration information of the secondary cell. The configuration information of the secondary cell is used to configure the corresponding secondary cell for the terminal device, for example, can include the frequency information of the secondary cell, and carries the configuration information of the SSB. That is, the network device configures the transmission parameters of the SSB while configuring the secondary cell for the terminal device.

[0059] Hereinafter, the SSBs described are on-demand SSBs.

[0060] FIG. 7 shows the time of configuration and activation of the secondary cell. The configuration and activation of the SSB are associated with the process of configuration and activation of the secondary cell. The network device can configure the secondary cell for the terminal device, for example, send the configuration information of the secondary cell to the terminal device through the RRC signaling. Of course, the network device can configure multiple secondary cells for the terminal device respectively. When the terminal device needs to use a certain secondary cell, the network device can indicate to activate the secondary cell, for example, the network device sends the activation indication information (or the activation signaling or activation command) of the secondary cell to the terminal device through the MAC CE. Optionally, after receiving the activation signaling of the secondary cell, the terminal device can perform channel detection and report the corresponding channel state information (CSI), and the reporting of the CSI can indicate that the activation process of the secondary cell is completed. After the secondary cell is activated, the network device and the terminal device can perform data transmission through the secondary cell.

[0061] Hereinafter, the configuration information of the SSB is described.

[0062] In some implementations, the configuration information of the SSB includes SSB resource information usable for transmitting the SSB, which for example includes one or more of the following: frequency information of the SSB; time domain information of a SSB burst set; information of a SSB position in the SSB burst set for actually transmitting the SSB; periodicity information of the SSB; subcarrier spacing of the SSB; bandwidth of the SSB; downlink transmit power of the SSB; cell identity (e.g. cell identity of a secondary cell).

[0063] The frequency information of the SSB can be used to determine the position of the frequency domain resource occupied by the SSB. For example, the frequency information of the SSB includes an offset of the lowest frequency position of the SSB relative to a predetermined frequency, or includes an offset of the highest frequency position of the SSB relative to the predetermined frequency. Further, in combination with the information of the bandwidth of the SSB, the position of the frequency domain resource occupied by the SSB can be determined.

[0064] The predetermined frequency can be determined based on, for example, a certain frequency position in the system; and / or a certain frequency position of the SSB of the primary cell of the terminal device, such as the lowest frequency position or the highest frequency position of the SSB.

[0065] The certain frequency position in the system can be, for example, the position of point A of the system, which is one of the important reference points in the system and is usually used for the allocation and labeling of the frequency domain resource. The position of the frequency domain resource used for transmitting the SSB in the primary cell is usually different from the position of the frequency domain resource used for transmitting the SSB in the secondary cell, but the frequency domain positions of the two are relatively close. As an example, the terminal device determines the lowest frequency position of the SSB in the secondary cell based on the lowest frequency position of the SSB in the primary cell, since the offset between the lowest frequency position of the SSB in the secondary cell and the lowest frequency position of the SSB in the primary cell is usually not large, it can be represented with fewer bits, thereby saving bit overhead.

[0066] For terminal devices with the same primary cell, their secondary cells can be different. When the position of the frequency domain resource of the SSB is indicated by the lowest or highest frequency domain position of the secondary cell, different values can be configured for different terminal devices, therefore, the network device can send different SSB configuration information for each terminal device.

[0067] In some implementations, the SSB resource information is one of a plurality of SSB resource information included in the configuration information of the SSB, and the configuration information of the SSB further includes resource sequence numbers corresponding to the plurality of SSB resource information. As an example, assuming that the configuration information of the SSB sent by the network device includes two possible transmission resources of the SSB, and their corresponding resource sequence numbers are #1 and #2 respectively, the time domain and / or frequency domain positions of the two transmission resources can be different.

[0068] The SSB positions in the SSB burst set for actually transmitting SSBs can be used to determine the time domain positions of the SSBs in the SSB burst set. For example, the SSB positions in the SSB burst set can be represented by an instruction similar to ssb-PositionsInBurst. For another example, the SSB positions in the SSB burst set for actually transmitting SSBs can be SSB positions in the SSB burst set that are configured for the terminal device to actually transmit SSBs from among multiple candidate SSB positions in the SSB burst set. In embodiments of the present application, the SSB positions include, for example, SSB indexes, or can also include time units (such as slots, frames, etc.) in which the SSBs are located.

[0069] In some implementations, the information of the SSB positions in the SSB burst set for actually transmitting SSBs includes an offset between the SSB positions in the SSB burst set for actually transmitting SSBs and a predetermined SSB position.

[0070] The predetermined SSB position is, for example, a first SSB position in the SSB burst set for actually transmitting SSBs.

[0071] In some implementations, the information of the SSB positions in the SSB burst set for actually transmitting SSBs includes information of the predetermined SSB position; or the information of the SSB positions in the SSB burst set for actually transmitting SSBs does not include information of the predetermined SSB position.

[0072] As an example, taking the pattern of the SSB burst set in FIG. 5 as an example, the SSB burst set includes multiple SSBs, and the corresponding SSB indexes are SSB 0 to SSB 7. The configuration information of the SSBs carries information of the SSB positions in the SSB burst set for actually transmitting SSBs, which can be some of the SSB indexes in SSB 0 to SSB 7, such as SSB 2 to SSB 4. When SSB 2 to SSB 4 are represented, the position of SSB 2 is taken as a reference, and the index value offsets of SSB 2 to SSB 4 relative to SSB 2 are 2-2=0, 3-2=1, and 4-2=2, respectively. In this way, the bit overhead can be reduced. Alternatively, in order to further reduce the bit overhead, SSB 2 can also not be represented, i.e., SSB 2 is defaulted, and only the index value offsets of SSB 3 and SSB 4 relative to SSB 2 are represented. The SSB index with an index value offset of 0 can be defaulted to be the first SSB index for actually transmitting SSBs.

[0073] It can be understood that the SSB resource information that can be used to transmit the SSB carried in the configuration information of the SSB includes information of a plurality of candidate resources that can be or can be used to transmit the SSB, that is, the candidate resources are configured to be used to transmit the SSB. However, whether the SSB is transmitted on the candidate resources can be determined based on other information. For example, the network device can send activation indication information for indicating SSB activation to the terminal device. If the activation indication information is used to indicate that the SSB is activated on a certain resource in the candidate resources, the SSB is transmitted on the resource. Otherwise, the SSB can not be transmitted on the resource. For another example, the network device can also send deactivation indication information for indicating SSB deactivation to the terminal device. The deactivation indication information is used to indicate to stop the transmission of the SSB on the candidate resources.

[0074] In some implementations, the activation of the SSB is before the activation indication information of the secondary cell (that is, the activation time of the SSB is before the time when the terminal device receives the activation indication information of the secondary cell); and / or, the activation of the SSB is before the configuration information of the SSB (that is, the activation time of the SSB is before the time when the terminal device receives the configuration information of the SSB); and / or, the activation of the SSB is after the activation indication information of the secondary cell (that is, the activation time of the SSB is after the time when the terminal device receives the activation indication information of the secondary cell); and / or, the activation of the SSB is after the configuration information of the SSB (that is, the activation time of the SSB is after the time when the terminal device receives the configuration information of the SSB).

[0075] Continuing to refer to FIG. 7, the activation time of the SSB can be before stage 1, at stage 1, at stage 2, or at stage 3. For example, the transmission time of the configuration information of the SSB and the activation time of the SSB can be at stage 1.

[0076] Optionally, in the case where the activation of the SSB is before the configuration information of the secondary cell, the terminal device can buffer the SSB received before the configuration information of the secondary cell, and after receiving the configuration information of the secondary cell, detect the buffered SSB based on the configuration information of the SSB.

[0077] After obtaining the configuration information of the SSB, the terminal device can know the resource information configured by the network device for the secondary cell to transmit the SSB. However, the terminal device also needs to know when the SSB transmitted by the network device will be on the resource, so as to detect the SSB or perform other related operations based on the SBB. Therefore, the terminal device also needs to obtain the activation information of the SSB. The activation information of the SSB is used to determine the transmission time of the SSB, that is, when the SSB is activated.

[0078] In some implementations, the configuration information of the SSB sent by the network device can further include activation information of the SSB, that is, the activation information of the SSB is carried in the configuration information of the SSB; and / or, the activation information can be sent to the terminal device by the network device after the configuration information of the SSB; and / or, the activation information is predetermined.

[0079] In some implementations, the activation information includes one or more of the following: activation indication information for indicating SSB activation; deactivation indication information for indicating SSB deactivation; information of a transmission start time of the SSB; information of a transmission end time of the SSB; information of a transmission duration of the SSB; SCellState information in configuration information of a secondary cell; periodicity information of the SSB; information of an SSB index; and a resource sequence corresponding to SSB resource information.

[0080] For example, assuming that the activation information is carried in the configuration information of the secondary cell sent by the network device, when the terminal device receives the configuration information of the secondary cell, the terminal device can obtain not only the configuration information of the SSB, but also the activation information of the SSB. Taking the activation information as an activation indication or deactivation indication of the SSB for example, if the activation indication of the SSB is carried in the configuration information of the SSB, the terminal device can determine that the SSB is activated when the terminal device receives the configuration information of the SSB; if the deactivation indication of the SSB is carried in the configuration information of the SSB, the terminal device can determine that the SSB is not activated when the terminal device receives the configuration information of the SSB.

[0081] In the embodiments of the present application, the SSB activation can mean that the SSB has been, is being, or will be activated; similarly, the SSB deactivation can mean that the SSB has been, is being, or will be deactivated.

[0082] For example, the activation information comprises a transmission start time of the SSB, and the terminal device knows the transmission start time of the SSB based on the transmission start time of the SSB. Alternatively, the transmission start time of the SSB is determined based on one or more of the following: a time at which the terminal device receives the configuration information of the SSB; a first resource available for transmitting the SSB after the terminal device receives the configuration information of the SSB; a first resource for actually transmitting the SSB after the terminal device receives the configuration information of the SSB; a first resource available for transmitting the SSB after a preset time duration from the time at which the terminal device receives the configuration information of the SSB; a first resource for actually transmitting the SSB after a preset time duration from the time at which the terminal device receives the configuration information of the SSB; a first resource for actually transmitting the SSB in a SSB burst set after a preset time duration from the time at which the terminal device receives the configuration information of the SSB; a time at which the terminal device receives the activation indication information of the SSB; a first resource available for transmitting the SSB after a time at which the terminal device sends the feedback information; a first resource for actually transmitting the SSB after a time at which the terminal device sends the feedback information; a first resource for actually transmitting the SSB in a SSB burst set after a time at which the terminal device sends the feedback information.

[0083] The feedback information comprises, for example, feedback information of the configuration information of the SSB or feedback information of the activation information.

[0084] The preset time duration can be, for example, pre-agreed (e.g., specified in a protocol) or sent by the network device (e.g., notified to the terminal device through high-layer signaling). The preset time duration can be set, for example, by taking into account a possible synchronization error between the primary cell and the secondary cell transmitting the SSB when the primary cell sends the activation information to the terminal device, e.g., by setting the preset time duration based on the synchronization error. As an example, the preset time duration can be 3 times the number of slots per subframe.

[0085] Here, the first resource available for transmitting the SSB can be, for example, a resource corresponding to a first SSB index in a SSB burst set or a first SSB position in a plurality of candidate SSB positions, where the plurality of candidate SSB positions can be determined based on SSB resource information carried in the configuration information of the SSB and / or based on a plurality of candidate SSB positions pre-agreed for transmitting the SSB, e.g., specified in a protocol that certain time units (e.g., certain slots) are candidate SSB positions available for transmitting the SSB (or a SSB burst set). The first resource for actually transmitting the SSB can be, for example, a first SSB position in a plurality of SSB positions in a SSB burst set for actually transmitting the SSB carried in the configuration information of the SSB.

[0086] In consideration of the fact that the detection of the SSB needs a period of time, in order to effectively indicate the transmission start time of the SSB, optionally, the time granularity used to represent the preset time length is greater than or equal to the time granularity used to represent the SSB resource information. As an example, the time granularity used to represent the preset time length is a time slot or a frame. Wherein, optionally, the time granularity of the SSB resource information can be a time slot, for example, the transmission resource of the SSB can be configured as time slot 1, time slot 2, time slot 3, time slot 4 and time slot 5.

[0087] For another example, assuming that the activation information includes the transmission end time of the SSB, the terminal device can know the time when the SSB stops transmission based on the transmission end time of the SSB. Optionally, the transmission end time of the SSB is determined based on one or more of the following: the reporting time of the measurement report of the terminal device; the time when the terminal device receives the deactivation indication information of the SSB; the time when the terminal device sends the feedback information of the deactivation indication information of the SSB; and the time when the terminal device receives the deactivation indication information of the secondary cell.

[0088] Since the end time of the SSB can be associated with the measurement report generated by the terminal device based on the SSB measurement result, the end time of the SSB can be determined based on the reporting time of the measurement report, for example, a certain time position before or after the reporting time of the measurement report is the transmission end time of the SSB. Since the terminal device has reported the measurement report, there is no need to detect the SSB, and the transmission of the SSB can be stopped. Here, the measurement report includes, for example, the measurement result of the RRM measurement of the terminal device based on the SSB, including but not limited to the measurement result of the reference signal receiving power (RSRP), the reference signal receiving quality (RSRQ), the signal to interference noise ratio (SINR) and the like. And the measurement result can be, for example, a layer 3 (L3) cell level measurement result, a layer 3 beam level measurement result, a layer 1 (L1) cell level measurement result or a layer 1 beam level measurement result.

[0089] Of course, the transmission start time, the transmission end time, the transmission duration and the like of the SSB described above can also be represented by absolute time or relative time, for example, the transmission start time and / or the transmission end time can be represented by the corresponding absolute time (time stamp) or the time offset between the relative to a certain specific time.

[0090] The time granularity for indicating the transmission start time, the transmission end time, the transmission duration, the preset time length, and the like, for example, includes one or more of the following: a symbol, a half-slot, a slot, or a frame.

[0091] Since the time granularity is related to the subcarrier spacing, optionally, the subcarrier spacing used for determining the time granularity can be determined based on one or more of the following: the subcarrier spacing carried in the configuration information of the SSB; the subcarrier spacing used for transmitting the configuration information of the SSB; the subcarrier spacing of the SSB of the primary cell; and the subcarrier spacing of the secondary cell.

[0092] For another example, assuming that the activation information includes the transmission duration of the SSB, the terminal device can determine which part of the transmission resource configured for the SSB transmits the SSB based on the transmission start time of the SSB and the transmission duration. Optionally, the transmission duration of the SSB is determined based on one or more of the following: the time length of the transmission duration; the time length of the timer used for recording the transmission duration; and the number of cycles of SSB transmission. Since the number of cycles of SSB transmission is relatively small in value compared to other time information, the number of bits required to represent the number of cycles is also small, thereby saving the load in the first information.

[0093] For another example, assuming that the activation information is the secondary cell state (SCellState) information, the terminal device can use the secondary cell state information to determine whether the SSB is activated when receiving the configuration information sent by the network device. In the case where the secondary cell state information is configured as activated, it is used to indicate that the terminal device activates the SSB when receiving the configuration information; or in the case where the secondary cell state information is configured as deactivated, it is used to indicate that the terminal device does not activate the SSB when receiving the configuration information.

[0094] Generally, the secondary cell state information is carried in the configuration information of the secondary cell. When the secondary cell state information is indicated as activated, it means that the secondary cell is activated immediately when receiving the configuration information of the secondary cell, otherwise, it means that the secondary cell will not be activated immediately, but will be activated when the network device sends the activation indication information of the secondary cell. Here, the secondary cell state information can be reused to indicate whether the SSB is activated immediately. When the secondary cell state information is indicated as activated, it means that the secondary cell is activated immediately when receiving the configuration information of the secondary cell, and the transmission of the SSB can also be activated together.

[0095] In some implementations, the method 600 further includes that the terminal device sends feedback information of the activation information of the SSB to the network device; and accordingly, the network device receives the feedback information sent by the terminal device. The feedback information may, for example, be a HARQ-ACK, and the feedback information is used to trigger the network device to send the SSB. After receiving the feedback information sent by the terminal device for the activation information, the network device indicates that the terminal device has known that there will be an SSB to be transmitted at the position indicated by the activation information, and thus the network device can send the SSB to the terminal device at the position indicated by the activation information.

[0096] In some implementations, the method 600 further includes that the terminal device sends feedback information of the configuration information of the SSB to the network device; and accordingly, the network device receives the feedback information sent by the terminal device. In the case where the configuration information of the SSB is carried in MAC signaling, the feedback information may, for example, be a HARQ-ACK of the configuration information of the SSB; or in the case where the configuration information of the SSB is carried in RRC signaling, the feedback information may, for example, be an uplink response of the RRC signaling.

[0097] In some implementations, the terminal device performs an operation related to the SSB in the case where the terminal device detects the SSB based on the position indicated by the activation information. In the case where the terminal device does not detect the SSB, the terminal device does not perform the operation. The terminal device may, for example, not be a terminal device served by the SSB, that is, the SSB currently transmitted in the secondary cell is not triggered for the terminal device. The detection may, for example, include matching and other related operations. If the matching is passed, it indicates that there is an SSB transmission on the resource. If the matching is not passed, it indicates that there is no SSB transmission on the resource.

[0098] In some implementations, the method 600 further includes that the terminal device determines the SSB to be deactivated in one or more of the following cases: the terminal device receives deactivation indication information of the SSB; a timer used to record the transmission duration of the SSB is timed out; and the terminal device receives a new SSB activation indication. The terminal device may, for example, include all terminal devices supporting on-demand SSB in the secondary cell. When determining the SSB to be deactivated, the terminal device can stop performing an operation related to the SSB.

[0099] In some implementations, the method 600 further includes that the terminal device performs an operation related to the SSB based on the configuration information of the SSB; and / or the terminal device performs an operation related to the SSB based on the activation information described above, for example, activation indication information sent by the network device to indicate the activation of the SSB.

[0100] The operations related to SSBs include, for example, detecting SSBs, and / or performing puncturing operations on channels (e.g., data channels and / or control channels) based on SSBs. The data channels include, for example, PDSCH and / or the like, and the control channels include, for example, PDCCH and / or the like. Of course, for side link (SL), the data channels can also include physical uplink shared channels (PUSCH) and / or the like, and the control channels can also include physical uplink control channels (PUCCH) and / or the like.

[0101] The SSB detection (or SSB measurement) performed by the terminal device can be, for example, the aforementioned RRM measurement, such as measurement of RSRP, RSRQ, and / or SNR. For terminal devices that need to detect on-demand SSBs, the configuration information of the SSBs needs to be informed to these terminal devices so that these terminal devices can receive the on-demand SSBs at the correct resource location.

[0102] The puncturing operation performed by the terminal device is, for example, an operation in the rate matching process. In a wireless communication system, rate matching is a process for adjusting the data rate to match the physical layer transmission capability. In the rate matching process, a series of processing (including puncturing operation) is performed on the transport block (TB) to adjust its length by a rate matching algorithm to adapt to the transmission capability of the channel.

[0103] As mentioned above, in the NR system, there can be downlink channels such as PDCCH, PDSCH and / or the like transmitted together with SSBs in each time slot. As an example, as shown in FIG. 8, the horizontal axis is the time axis and the vertical axis is the frequency axis. In each time slot, for example, 1 ms, PDSCH can be transmitted on the symbols to the left and right of the SSB, and data can also be transmitted on the frequencies above and below the SSB, otherwise, these frequencies will not be utilized, resulting in resource waste. Taking an example of 15 kHz per subcarrier, 240 subcarriers are about several megahertz of bandwidth, which is less than the frequency resources that can be scheduled in the system. In order to fully utilize the frequency resources, the transmission of the scheduled downlink channels will be performed near the frequency resources occupied by the symbols of the SSB.

[0104] If the transmission resource of the SSB and the transmission resource (or scheduling resource) of the PDSCH conflict, for example, all or part of the SSB is transmitted on the transmission resource of the PDSCH, the PDSCH can be punctured based on the part of the conflicting resource, that is, the PDSCH can not be transmitted on the part of the conflicting resource, but the SSB is transmitted.

[0105] The transmission of the on-demand SSB is not periodic, but is transmitted within a period of time, and only a part of the terminal devices can receive the signaling indicating the start of transmission or the termination of transmission of the on-demand SSB. At present, it is not determined which terminal devices can receive the signaling. Since the detection of the on-demand SSB is the capability of some terminal devices (terminal devices supporting the on-demand SSB), no matter how the signaling indicating the start of transmission or the termination of transmission of the on-demand SSB is designed, other terminal devices, for example, terminal devices not supporting the on-demand SSB, cannot receive it. Therefore, the downlink channel of the terminal devices should not be scheduled to the resource overlapping with the on-demand SSB, otherwise the terminal devices will not puncture the downlink channel and decoding errors will occur.

[0106] As for the terminal devices supporting the on-demand SSB, since the transmission of the on-demand SSB is for a specific terminal device, but the resource near the on-demand SSB should not be limited to the use of the specific terminal device. If the terminal device has no need for data transmission, the resource near the on-demand SSB is wasted, and therefore the use of the resource by other terminal devices supporting the on-demand SSB should not be limited. In addition, limiting the use of the resource to the terminal device served by the on-demand SSB also limits the flexibility of scheduling.

[0107] In order to enable other terminal devices supporting the on-demand SSB to also use the resource near the on-demand SSB for channel transmission, the other terminal devices should also know the transmission state of the on-demand SSB, so as to puncture the channel having resource conflict with the on-demand SSB.

[0108] Therefore, the terminal devices can puncture the corresponding channel based on the configuration information of the SSB transmitted by the network device, so as to avoid the transmission of the on-demand SSB of the other terminal devices from affecting the channel transmission of the terminal devices.

[0109] In the method 600, the terminal device performs an operation related to the SSB based on the configuration information of the SSB, for example, the terminal device can perform the operation on the resource position indicated by the configuration information of the SSB, such as detecting the SSB or performing the puncturing operation described above. The terminal device performs an operation related to the SSB based on the activation indication information of the SSB, for example, the terminal device can perform the operation on the resource position where the network device transmits the SSB indicated by the activation indication information, such as detecting the SSB or performing the puncturing operation described above.

[0110] As an example, in the case that the network device triggers the transmission of the SSB for a certain terminal device, the terminal device can perform an operation related to the SSB based on the activation indication information transmitted by the network device to indicate the activation of the SSB; or in the case that the network device triggers the transmission of the SSB for a terminal device other than the terminal device, the terminal device performs an operation related to the SSB based on the configuration information of the SSB.

[0111] Suppose that the terminal device 1 and the terminal device 2 in the secondary cell both support on-demand SSB, and the network device configures the terminal device 1 and the terminal device 2 with the SSB resource information described above. If the SSB currently transmitted by the network device is triggered for the terminal device 1, for example, the terminal device 1 currently has a demand to access and / or synchronize, etc. using the SSB, then the terminal device 1 can not puncture the channel when receiving the configuration information of the SSB transmitted by the network device, but only when the network device subsequently transmits the activation indication information of the SSB, the terminal device 1 punctures the channel transmitted near the resource position indicated by the activation indication information of the SSB. Since the SSB currently transmitted by the network device is not triggered for the terminal device 2, for example, the terminal device 2 currently has no demand to use the SSB, the terminal device 2 can not know that the network device triggers the transmission of the SSB for the terminal device 1, but in order to avoid the impact of the SSB on its channel transmission, therefore, the terminal device 2 can start to puncture the corresponding channel based on the resource position indicated by the SSB resource information in the configuration information of the SSB when receiving the configuration information of the SSB transmitted by the network device. That is, the terminal device 2 can directly puncture the channel which has a resource conflict with the SSB that can be transmitted without considering the actual transmission situation of the SSB, because in the actual transmission situation, the terminal device 2 can not be notified when to activate the SSB, that is, when to start the transmission of the SSB.

[0112] The method embodiments of the present application are described in detail above in combination with FIG. 1 to FIG. 8, and the device embodiments of the present application are described in detail below in combination with FIG. 9 to FIG. 11. It should be understood that the description of the method embodiments corresponds to the description of the device embodiments, and therefore, the parts not described in detail can be referred to the method embodiments described above.

[0113] FIG. 9 is a structural schematic diagram of a terminal device provided by an embodiment of the present application. The terminal device 900 shown in FIG. 9 can include a transceiver unit 910. The transceiver unit 910 is configured to receive configuration information of an SSB sent by a network device, the SSB being an on-demand SSB.

[0114] In some implementations, the configuration information of the SSB is carried in one or more of the following: configuration information of a secondary cell, activation indication information of a secondary cell, RRC signaling, MAC signaling, groupcast signaling, broadcast signaling.

[0115] In some implementations, the configuration information of the SSB includes SSB resource information available for transmitting the SSB, and the SSB resource information includes one or more of the following: frequency information of the SSB; information of SSB positions in an SSB burst set used for actually transmitting the SSB; periodicity information of the SSB; subcarrier spacing of the SSB; bandwidth of the SSB; downlink transmit power of the SSB; secondary cell identification; and resource sequence numbers corresponding to a plurality of SSB resource information included in the configuration information of the SSB.

[0116] In some implementations, the information of SSB positions in the SSB burst set used for actually transmitting the SSB includes an offset between the SSB positions in the SSB burst set used for actually transmitting the SSB and a predetermined SSB position.

[0117] In some implementations, the SSB position includes an SSB index.

[0118] In some implementations, the predetermined SSB position is a first SSB position in a plurality of SSB positions in the SSB burst set used for actually transmitting the SSB.

[0119] In some implementations, the information of SSB positions in the SSB burst set used for actually transmitting the SSB includes information of the predetermined SSB position; or the information of SSB positions in the SSB burst set used for actually transmitting the SSB does not include information of the predetermined SSB position.

[0120] In some implementations, the information of SSB positions in the SSB burst set used for actually transmitting the SSB further includes a position of the predetermined SSB position in a plurality of SSB positions in a same time slot as the predetermined SSB position.

[0121] In some embodiments, the terminal device further comprises a processing unit 920 configured to: obtain the activation information of the SSB, wherein the activation information is obtained based on one or more of the following manners: the activation information of the SSB is carried in the configuration information of the SSB; and / or, the activation information is sent to the terminal device by the network device after the configuration information of the SSB; and / or, the activation information is pre-agreed.

[0122] In some embodiments, the activation information comprises one or more of the following: activation indication information used for indicating SSB activation; deactivation indication information used for indicating SSB deactivation; information of a transmission start time of the SSB; information of a transmission end time of the SSB; information of a transmission duration of the SSB; secondary cell state information in the configuration information of the secondary cell; periodicity information of the SSB; information of an SSB index.

[0123] In some embodiments, the transmission start time of the SSB is determined based on one or more of the following: a time at which the terminal device receives the configuration information of the SSB; a first resource available for transmitting the SSB after the terminal device receives the configuration information of the SSB; a first resource actually used for transmitting the SSB after the terminal device receives the configuration information of the SSB; a first resource available for transmitting the SSB after a preset time duration elapses since the terminal device receives the configuration information of the SSB; a first resource actually used for transmitting the SSB after the preset time duration elapses since the terminal device receives the configuration information of the SSB; a first resource actually used for transmitting the SSB in a SSB burst after the preset time duration elapses since the terminal device receives the configuration information of the SSB; a time at which the terminal device receives the activation indication information of the SSB; a first resource available for transmitting the SSB after a time at which the terminal device sends feedback information, wherein the feedback information comprises feedback information of the configuration information of the SSB or feedback information of the activation information; a first resource actually used for transmitting the SSB after the time at which the terminal device sends the feedback information; a first resource actually used for transmitting the SSB in a SSB burst after the time at which the terminal device sends the feedback information.

[0124] In some embodiments, the preset time duration is determined based on one or more of the following: the preset time duration is notified to the terminal device by high-layer signaling; or, the preset time duration is pre-agreed.

[0125] In some embodiments, the preset time duration is three times of the number of slots per subframe.

[0126] In some implementations, the transmission end time of the SSB is determined based on one or more of the following: a reporting time of a measurement report of the terminal device; a time at which the terminal device receives the deactivation indication information of the SSB; a time at which the terminal device sends feedback information of the deactivation indication information of the SSB; and a time at which the terminal device receives the deactivation indication information of the secondary cell.

[0127] In some implementations, the transmission duration of the SSB is determined based on one or more of the following: a length of the transmission duration; a length of a timer used to record the transmission duration; and a number of cycles of SSB transmission.

[0128] In some implementations, a time granularity used to represent the transmission start time of the SSB, the transmission end time of the SSB, the transmission duration of the SSB, and a preset length of time includes one or more of the following: a symbol, a half-slot, a slot, and a frame.

[0129] In some implementations, a subcarrier spacing used to determine the time granularity is determined based on one or more of the following: a subcarrier spacing carried in configuration information of the SSB; a subcarrier spacing used to transmit the configuration information of the SSB; a subcarrier spacing of an SSB of a primary cell; and a subcarrier spacing of a secondary cell.

[0130] In some implementations, in a case where the secondary cell state information is configured as activated, the terminal device is instructed to activate the SSB upon receiving the configuration information of the SSB; or, in a case where the secondary cell state information is configured as deactivated, the terminal device is instructed to not activate the SSB upon receiving the configuration information of the SSB.

[0131] In some implementations, the transceiver 910 is further configured to send feedback information to the network device, the feedback information being used to trigger the network device to send the SSB, the feedback information including feedback information of configuration information of the SSB or feedback information of activation information.

[0132] In some implementations, in a case where the configuration information of the SSB is carried in MAC signaling, the feedback information is a HARQ-ACK of the configuration information of the SSB; or, in a case where the configuration information of the SSB is carried in RRC signaling, the feedback information is an uplink response of the RRC signaling.

[0133] In some embodiments, the activation of the SSB is located before the activation indication information of the secondary cell; and / or, the activation of the SSB is located before the configuration information of the SSB; and / or, the activation of the SSB is located after the activation indication information of the secondary cell; and / or, the activation of the SSB is located after the configuration information of the SSB.

[0134] In some embodiments, the terminal device further comprises a processing unit 920, configured to: perform an operation related to the SSB based on the configuration information of the SSB; and / or, perform an operation related to the SSB based on the activation information of the SSB.

[0135] In some embodiments, the terminal device further comprises a processing unit 920, configured to: in a case that the network device triggers transmission of the SSB for the terminal device, perform an operation related to the SSB based on the activation indication information sent by the network device for indicating the activation of the SSB; or, in a case that the network device triggers transmission of the SSB for another terminal device other than the terminal device, perform an operation related to the SSB based on the configuration information of the SSB sent by the network device.

[0136] In some embodiments, the operation related to the SSB comprises: detecting the SSB; and / or, performing a puncturing operation on a channel based on the SSB.

[0137] The dashed line shown in FIG. 9 indicates that the unit or module is optional. It can be understood that the transceiving unit 910 shown in FIG. 9 may, for example, be the transceiver 1130, and the processing unit 920 may, for example, be the processor 1110. In addition, the terminal device 900 optionally further comprises a memory 1120, as shown in FIG. 11.

[0138] FIG. 10 is a structural diagram of a network device provided by an embodiment of the present application. The network device 1000 shown in FIG. 10 can comprise a transceiving unit 1010. The transceiving unit 1010 is configured to send, to a terminal device, configuration information of an SSB, the SSB being an on-demand SSB.

[0139] In some embodiments, the configuration information of the SSB is carried in one or more of the following: configuration information of the secondary cell, activation indication information of the secondary cell, RRC signaling, MAC signaling, multicast signaling, broadcast signaling.

[0140] In some embodiments, the configuration information of the SSB includes SSB resource information available for transmitting the SSB, the SSB resource information including one or more of the following: frequency information of the SSB; information of SSB positions in the SSB burst set for actually transmitting the SSB; periodicity information of the SSB; subcarrier spacing of the SSB; bandwidth of the SSB; downlink transmit power of the SSB; secondary cell identification; resource sequence number corresponding to the plurality of SSB resource information included in the configuration information of the SSB.

[0141] In some embodiments, the information of the SSB positions in the SSB burst set for actually transmitting the SSB includes an offset between the SSB positions in the SSB burst set for actually transmitting the SSB and a predetermined SSB position.

[0142] In some embodiments, the SSB position includes an SSB index.

[0143] In some embodiments, the predetermined SSB position is a first SSB position in the plurality of SSB positions in the SSB burst set for actually transmitting the SSB.

[0144] In some embodiments, the information of the SSB positions in the SSB burst set for actually transmitting the SSB includes information of the predetermined SSB position; or the information of the SSB positions in the SSB burst set for actually transmitting the SSB does not include information of the predetermined SSB position.

[0145] In some embodiments, the information of the SSB positions in the SSB burst set for actually transmitting the SSB further includes a position of the predetermined SSB position in the plurality of SSB positions in the same time slot.

[0146] In some embodiments, the configuration information of the SSB further includes activation information of the SSB; and / or, the activation information is sent by the network device to the terminal device after the configuration information of the SSB; and / or, the activation information is pre-agreed.

[0147] In some embodiments, the activation information includes one or more of the following: activation indication information for indicating activation of the SSB; deactivation indication information for indicating deactivation of the SSB; information of a transmission start time of the SSB; information of a transmission end time of the SSB; information of a transmission duration of the SSB; secondary cell state information in the configuration information of the secondary cell; periodicity information of the SSB; information of an SSB index.

[0148] In some embodiments, the transmission start time of the SSB is determined based on one or more of the following: a time at which the terminal device receives configuration information of the SSB; a first resource available for transmitting the SSB after the terminal device receives the configuration information of the SSB; a first resource for actually transmitting the SSB after the terminal device receives the configuration information of the SSB; a first resource available for transmitting the SSB after a preset time duration elapses since the terminal device receives the configuration information of the SSB; a first resource for actually transmitting the SSB after the preset time duration elapses since the terminal device receives the configuration information of the SSB; a first resource for actually transmitting the SSB in a SSB burst after the preset time duration elapses since the terminal device receives the configuration information of the SSB; a time at which the terminal device receives activation indication information of the SSB; a first resource available for transmitting the SSB after a time at which the terminal device sends feedback information, the feedback information including feedback information of the configuration information of the SSB or feedback information of activation information; a first resource for actually transmitting the SSB after the terminal device sends the feedback information; a first resource for actually transmitting the SSB in a SSB burst after the terminal device sends the feedback information.

[0149] In some embodiments, the preset time duration is determined based on one or more of the following: the preset time duration is signaled to the terminal device by a higher layer; or the preset time duration is pre-agreed.

[0150] In some embodiments, the preset time duration is three times a number of slots per subframe.

[0151] In some embodiments, the transmission end time of the SSB is determined based on one or more of the following: a reporting time of a measurement report of the terminal device; a time at which the terminal device receives deactivation indication information of the SSB; a time at which the terminal device sends feedback information of the deactivation indication information of the SSB; a time at which the terminal device receives deactivation indication information of a secondary cell.

[0152] In some embodiments, the transmission duration of the SSB is determined based on one or more of the following: a time length of the transmission duration; a time length of a timer used to record the transmission duration; a number of periods of SSB transmission.

[0153] In some embodiments, a time granularity used to represent the transmission start time of the SSB, the transmission end time of the SSB, the transmission duration of the SSB, and the preset time duration includes one or more of the following: a symbol, a half-slot, a slot, a frame.

[0154] In some embodiments, the subcarrier spacing for determining the time granularity is determined based on one or more of the following: a subcarrier spacing carried in the configuration information of the SSB; a subcarrier spacing used for transmitting the configuration information of the SSB; a subcarrier spacing of an SSB of a primary cell; a subcarrier spacing of a secondary cell.

[0155] In some embodiments, in a case where the secondary cell state information is configured as activated, the SSB is activated when the terminal device receives the configuration information of the SSB; or, in a case where the secondary cell state information is configured as deactivated, the SSB is not activated when the terminal device receives the configuration information of the SSB.

[0156] In some embodiments, the transceiver 1010 is further configured to receive feedback information sent by the terminal device, the feedback information being used to trigger the network device to send the SSB, and the feedback information including feedback information of the configuration information of the SSB or feedback information of the activation information.

[0157] In some embodiments, in a case where the configuration information of the SSB is carried in MAC signaling, the feedback information is a HARQ-ACK of the configuration information of the SSB; or, in a case where the configuration information of the SSB is carried in RRC signaling, the feedback information is an uplink response of the RRC signaling.

[0158] In some embodiments, the activation of the SSB is located before the activation indication information of the secondary cell; and / or, the activation of the SSB is located before the configuration information of the SSB; and / or, the activation of the SSB is located after the activation indication information of the secondary cell; and / or, the activation of the SSB is located after the configuration information of the SSB.

[0159] It can be understood that the transceiver 1010 may, for example, be a transceiver 1130. In addition, the network device 1000 optionally further includes a processor 1110 and a memory 1120, as shown in FIG. 11.

[0160] FIG. 11 is a schematic structural diagram of an apparatus for communication according to an embodiment of the present application. The dashed lines shown in FIG. 11 indicate that the unit or module is optional. The apparatus 1100 can be used to implement the methods described in the above method embodiments. The apparatus 1100 may, for example, be a chip, a terminal device, or a network device.

[0161] The apparatus 1100 can include one or more processors 1110. The processor 1110 can support the apparatus 1100 to implement the methods described in the foregoing method embodiments. The processor 1110 can be a general purpose processor or a dedicated processor. For example, the processor 1110 can be a central processing unit (CPU). Alternatively, the processor 1110 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 can be any conventional processor.

[0162] The apparatus 1100 can also include one or more memories 1120. The memory 1120 stores a program that can be executed by the processor 1110, so that the processor 1110 executes the methods described in the foregoing method embodiments. The memory 1120 can be independent of the processor 1110, or can also be integrated in the processor 1110.

[0163] The apparatus 1100 can also include a transceiver 1130. The processor 1110 can communicate with other devices or chips through the transceiver 1130. For example, the processor 1110 can perform data transceiving with other devices or chips through the transceiver 1130.

[0164] The embodiments of the present application also provide a communication system. The communication system includes the terminal device and the network device described above. In some implementations, the system further includes other devices that interact with the terminal device and the network device.

[0165] 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 device or the network device provided by the embodiments of the present application, and the program causes the computer to execute the methods performed by the terminal device or the network device in the embodiments of the present application.

[0166] 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 device or the network device provided by the embodiments of the present application, and the program causes the computer to execute the methods performed by the terminal device or the network device in the embodiments of the present application.

[0167] The embodiments of the present application further provide a computer program. The computer program can be applied to the terminal device 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.

[0168] It should be understood that the terms "system" and "network" can be used interchangeably in the embodiments of 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 "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0169] In the embodiments of the present application, the "indication" mentioned can be direct indication, or indirect indication, or can represent an associated relationship. For example, A indicates B, which can mean that B can be obtained by A; or A indirectly indicates B, for example, A indicates C, and B can be obtained by C; or A and B have an associated relationship.

[0170] 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.

[0171] In the embodiments of the present application, the term "corresponding" can represent a direct or indirect corresponding relationship between the two, or can represent an associated relationship between the two, or can represent an indication and being indicated, configuration and being configured, and the like.

[0172] In the embodiments of the present application, "predefined" or "preconfigured" can be implemented by pre-saving corresponding codes, tables or other information that can be used to indicate related information in the device (for example, including terminal devices and network devices), and the present application does not limit the specific implementation manner. For example, predefinition can refer to definition in a protocol.

[0173] 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.

[0174] The term "and / or" used in the embodiments of the present application only describes an association relationship of 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 this document generally represents an "or" relationship between the front and rear associated objects.

[0175] In various embodiments of the present application, the size of the sequence number of each process described above does not mean the order of execution, and 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.

[0176] In several embodiments provided by the present application, it should be understood that the disclosed system, device and method can be implemented by other means. 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, which can be electrical, mechanical or other forms.

[0177] 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 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.

[0178] 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.

[0179] 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 (such as floppy disk, hard disk, magnetic tape), optical media (such as digital video disc (DVD)) or semiconductor media (such as solid state disk (SSD)) and the like.

[0180] 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 of wireless communication, comprising: The method comprises: The terminal device receives configuration information of a synchronization signal broadcast channel block (SSB) sent by the network device, the SSB being an on-demand SSB.

2. The method of claim 1, wherein, The configuration information of the SSB is carried in one or more of the following: configuration information of a secondary cell, activation indication information of a secondary cell, RRC signaling, MAC signaling, groupcast signaling, and broadcast signaling.

3. The method according to claim 1 or 2, characterized in that, The configuration information of the SSB includes SSB resource information available for transmitting the SSB, and the SSB resource information includes one or more of the following: frequency information of the SSB; information of SSB positions in an SSB burst used for actually transmitting the SSB; period information of the SSB; subcarrier spacing of the SSB; bandwidth of the SSB; downlink transmit power of the SSB; secondary cell identification; a resource sequence number corresponding to a plurality of SSB resource information included in the configuration information of the SSB.

4. The method of claim 3, wherein, The information of SSB positions in the SSB burst used for actually transmitting the SSB includes an offset between a predetermined SSB position and an SSB position in the SSB burst used for actually transmitting the SSB.

5. The method of claim 4, wherein, The SSB position includes an SSB index.

6. The method according to claim 4 or 5, characterized in that, The predetermined SSB position is a first SSB position in a plurality of SSB positions in the SSB burst used for actually transmitting the SSB.

7. The method of any one of claims 4 to 6, wherein the information of the predetermined SSB position is included in the information of SSB positions in the SSB burst used for actually transmitting the SSB; or the information of the predetermined SSB position is not included in the information of SSB positions in the SSB burst used for actually transmitting the SSB.

8. The method according to any one of claims 4 to 7, characterized in that, The information of SSB positions in the SSB burst used for actually transmitting the SSB further includes a position of the predetermined SSB position among a plurality of SSB positions in the same time slot as the predetermined SSB position.

9. The method according to any one of claims 1 to 8, characterized in that, The method further comprises: The terminal device obtains activation information of the SSB, and the activation information is obtained based on one or more of the following: The activation information of the SSB is carried in the configuration information of the SSB; and / or The activation information is sent by the network device to the terminal device after the configuration information of the SSB; and / or The activation information is pre-agreed.

10. The method of claim 9, wherein, The activation information includes one or more of the following: activation indication information for indicating activation of the SSB; deactivation indication information for indicating deactivation of the SSB; information of a transmission start time of the SSB; information of a transmission end time of the SSB; information of a transmission duration of the SSB; secondary cell state information in the configuration information of the secondary cell; period information of the SSB; information of an SSB index.

11. The method of claim 10, wherein, The transmission start time of the SSB is determined based on one or more of the following: a time at which the terminal device receives the configuration information of the SSB; a first resource available for transmitting the SSB after the terminal device receives the configuration information of the SSB; a first resource used for actually transmitting the SSB after the terminal device receives the configuration information of the SSB; The first resource available for transmitting the SSB after a preset time length from when the terminal device receives the configuration information of the SSB; The first resource for actually transmitting the SSB after the preset time length from when the terminal device receives the configuration information of the SSB; The first resource for actually transmitting the SSB in a SSB burst after the preset time length from when the terminal device receives the configuration information of the SSB; The time when the terminal device receives the activation indication information of the SSB; The first resource available for transmitting the SSB after the time when the terminal device sends the feedback information, the feedback information including feedback information of the configuration information of the SSB or feedback information of activation information; The first resource for actually transmitting the SSB after the time when the terminal device sends the feedback information; The first resource for actually transmitting the SSB in a SSB burst after the time when the terminal device sends the feedback information.

12. The method of claim 11, wherein, The preset time length is determined based on one or more of the following: The preset time length is informed to the terminal device by high-layer signaling; or The preset time length is predetermined.

13. The method according to claim 11 or 12, characterized in that, The preset time length is three times the number of slots per subframe.

14. The method according to any one of claims 10 to 13, characterized in that, The transmission end time of the SSB is determined based on one or more of the following: The reporting time of the measurement report of the terminal device; The time when the terminal device receives the deactivation indication information of the SSB; The time when the terminal device sends the feedback information of the deactivation indication information of the SSB; The time when the terminal device receives the deactivation indication information of the secondary cell.

15. The method according to any one of claims 10 to 14, characterized in that, The transmission duration of the SSB is determined based on one or more of the following: The duration of the transmission duration; The duration of a timer used to record the transmission duration; The number of periods of SSB transmission.

16. The method according to any one of claims 10 to 15, characterized in that, The time granularity used to represent the transmission start time of the SSB, the transmission end time of the SSB, the transmission duration of the SSB, and the preset time length includes one or more of the following: symbol, half-slot, slot, frame.

17. The method of claim 16, wherein, The subcarrier spacing used to determine the time granularity is determined based on one or more of the following: The subcarrier spacing carried in the configuration information of the SSB; The subcarrier spacing used to transmit the configuration information of the SSB; The subcarrier spacing of the SSB of the primary cell; The subcarrier spacing of the secondary cell.

18. The method according to any one of claims 10 to 17, characterized in that, In the case where the secondary cell state information is configured as activated, it is used to indicate that the terminal device activates the SSB when receiving the configuration information of the SSB; or in the case where the secondary cell state information is configured as deactivated, it is used to indicate that the terminal device does not activate the SSB when receiving the configuration information of the SSB.

19. The method of any one of claims 1 to 18, wherein, The method further includes: The terminal device sends feedback information to the network device, the feedback information being used to trigger the network device to send the SSB, the feedback information including feedback information of the configuration information of the SSB or feedback information of activation information.

20. The method of claim 19, wherein, In a case where the configuration information of the SSB is carried in MAC signaling, the feedback information is a HARQ-ACK of the configuration information of the SSB; or in a case where the configuration information of the SSB is carried in RRC signaling, the feedback information is an uplink response of the RRC signaling.

21. The method of any of claims 1-20, wherein: the activation of the SSB is located before the activation indication information of the secondary cell; and / or, the activation of the SSB is located before the configuration information of the SSB; and / or, the activation of the SSB is located after the activation indication information of the secondary cell; and / or, the activation of the SSB is located after the configuration information of the SSB.

22. The method of any one of claims 1 to 21, wherein, The method further comprises: the terminal device performs an operation related to the SSB based on the configuration information of the SSB; and / or, the terminal device performs an operation related to the SSB based on the activation information of the SSB.

23. The method of any one of claims 1 to 22, wherein, The method further comprises: in a case where the network device triggers transmission of the SSB for the terminal device, the terminal device performs an operation related to the SSB based on the activation indication information sent by the network device to indicate the activation of the SSB; or in a case where the network device triggers transmission of the SSB for another terminal device other than the terminal device, the terminal device performs an operation related to the SSB based on the configuration information of the SSB sent by the network device.

24. The method of claim 22 or 23, wherein, The operation related to the SSB comprises: detecting the SSB; and / or, performing a puncturing operation on a channel based on the SSB.

25. A method of wireless communication, comprising: The method comprises: a network device sending, to a terminal device, configuration information of a synchronization signal block (SSB), the SSB being an on-demand SSB.

26. The method of claim 25, wherein, The configuration information of the SSB is carried in one or more of the following: configuration information of a secondary cell, activation indication information of a secondary cell, RRC signaling, MAC signaling, groupcast signaling, broadcast signaling.

27. The method of claim 25 or 26, wherein, The configuration information of the SSB comprises SSB resource information usable for transmission of the SSB, the SSB resource information comprising one or more of the following: frequency information of the SSB; information of SSB positions in an SSB burst used for actual transmission of the SSB; period information of the SSB; subcarrier spacing of the SSB; bandwidth of the SSB; downlink transmit power of the SSB; secondary cell identification; a resource sequence number corresponding to a plurality of SSB resource information included in the configuration information of the SSB.

28. The method of claim 27, wherein, The information of SSB positions in the SSB burst used for actual transmission of the SSB comprises an offset between a predetermined SSB position and an SSB position in the SSB burst used for actual transmission of the SSB.

29. The method of claim 28, wherein, The SSB position comprises an SSB index.

30. The method of claim 28 or 29, wherein, The predetermined SSB position is a first SSB position in a plurality of SSB positions in the SSB burst used for actual transmission of the SSB.

31. The method of any of claims 28-30, wherein: the information of the SSB positions in the SSB burst used for actual transmission of the SSB comprises information of the predetermined SSB position; or, the information of the SSB positions in the SSB burst used for actual transmission of the SSB comprises information of a plurality of SSB positions in the SSB burst used for actual transmission of the SSB. The information of the SSB position for actually transmitting the SSB in the SSB burst set does not include information of the predetermined SSB position.

32. The method of any one of claims 28-31, wherein, The information of the SSB position for actually transmitting the SSB in the SSB burst set further includes a position of the predetermined SSB position in a plurality of SSB positions located in the same time slot as the predetermined SSB position.

33. The method of any one of claims 25-32, wherein, the configuration information of the SSB further includes activation information of the SSB; and / or, the activation information is sent by the network device to the terminal device after the configuration information of the SSB; and / or, the activation information is predetermined.

34. The method of claim 33, wherein, the activation information includes one or more of the following: activation indication information for indicating SSB activation; deactivation indication information for indicating SSB deactivation; information of a transmission start time of the SSB; information of a transmission end time of the SSB; information of a transmission duration of the SSB; secondary cell state information in the configuration information of the secondary cell; period information of the SSB; information of an SSB index.

35. The method of claim 34, wherein, the transmission start time of the SSB is determined based on one or more of the following: a time at which the terminal device receives the configuration information of the SSB; a first resource available for transmitting the SSB after the terminal device receives the configuration information of the SSB; a first resource for actually transmitting the SSB after the terminal device receives the configuration information of the SSB; a first resource available for transmitting the SSB after a preset time duration elapses from the time at which the terminal device receives the configuration information of the SSB; a first resource for actually transmitting the SSB after the preset time duration elapses from the time at which the terminal device receives the configuration information of the SSB; a first resource for actually transmitting the SSB in an SSB burst set after the preset time duration elapses from the time at which the terminal device receives the configuration information of the SSB; a time at which the terminal device receives activation indication information of the SSB; a first resource available for transmitting the SSB after a time at which the terminal device sends feedback information, the feedback information including feedback information of the configuration information of the SSB or feedback information of the activation information; a first resource for actually transmitting the SSB after the time at which the terminal device sends the feedback information; a first resource for actually transmitting the SSB in an SSB burst set after the time at which the terminal device sends the feedback information.

36. The method of claim 35, wherein, the preset time duration is determined based on one or more of the following: the preset time duration is notified to the terminal device by high-layer signaling; or the preset time duration is predetermined.

37. The method of claim 35 or 36, wherein, the preset time duration is three times a number of slots per subframe.

38. The method of any one of claims 35-37, wherein, the transmission end time of the SSB is determined based on one or more of the following: a reporting time of a measurement report of the terminal device; a time at which the terminal device receives deactivation indication information of the SSB; a time at which the terminal device sends feedback information of the deactivation indication information of the SSB; a time at which the terminal device receives deactivation indication information of the secondary cell.

39. The method of any one of claims 34-38, wherein, The transmission duration of the SSB is determined based on one or more of the following: The length of the transmission duration; The length of a timer used to record the transmission duration; The number of periods of SSB transmission.

40. The method of any one of claims 34-39, wherein, The time granularity used to represent the transmission start time of the SSB, the transmission end time of the SSB, the transmission duration of the SSB, and a preset length of time includes one or more of the following: a symbol, a half-slot, a slot, a frame.

41. The method of claim 40, wherein, The subcarrier spacing used to determine the time granularity is determined based on one or more of the following: The subcarrier spacing carried in the configuration information of the SSB; The subcarrier spacing used to transmit the configuration information of the SSB; The subcarrier spacing of the SSB of the primary cell; The subcarrier spacing of the secondary cell.

42. The method of any one of claims 34-41, wherein, In the case where the secondary cell state information is configured as activated, the SSB is activated when the terminal device receives the configuration information of the SSB; or, in the case where the secondary cell state information is configured as deactivated, the SSB is not activated when the terminal device receives the configuration information of the SSB.

43. The method of any one of claims 25-42, wherein, The method further includes: The network device receives feedback information sent by the terminal device, the feedback information being used to trigger the network device to send the SSB, and the feedback information including feedback information of the configuration information of the SSB or feedback information of activation information.

44. The method of claim 43, wherein, In the case where the configuration information of the SSB is carried in MAC signaling, the feedback information is a HARQ-ACK of the configuration information of the SSB; or, in the case where the configuration information of the SSB is carried in RRC signaling, the feedback information is an uplink response of the RRC signaling.

45. The method of any one of claims 25 to 44, wherein: The activation of the SSB is located before the activation indication information of the secondary cell; and / or, The activation of the SSB is located before the configuration information of the SSB; and / or, The activation of the SSB is located after the activation indication information of the secondary cell; and / or, The activation of the SSB is located after the configuration information of the SSB.

46. A terminal device, comprising: comprises: The transceiver unit is configured to receive configuration information of a synchronization signal broadcast channel (SSB) sent by a network device, the SSB being an on-demand SSB.

47. The terminal device of claim 46, wherein, The configuration information of the SSB is carried in one or more of the following: configuration information of a secondary cell, activation indication information of a secondary cell, RRC signaling, MAC signaling, multicast signaling, and broadcast signaling.

48. The terminal device of claim 46 or 47, wherein, The configuration information of the SSB includes SSB resource information that can be used to transmit the SSB, and the SSB resource information includes one or more of the following: Frequency information of the SSB; Information of the SSB position in an SSB burst used to actually transmit the SSB; Period information of the SSB; Subcarrier spacing of the SSB; Bandwidth of the SSB; Downlink transmission power of the SSB; Secondary cell identifier; Resource sequence numbers corresponding to a plurality of SSB resource information included in the configuration information of the SSB.

49. The terminal device of claim 48, wherein, The information of the SSB positions in the SSB burst for actually transmitting SSBs comprises an offset between the SSB positions in the SSB burst for actually transmitting SSBs relative to the predetermined SSB position.

50. The terminal device of claim 49, wherein, The SSB position comprises an SSB index.

51. The terminal device of claim 49 or 50, wherein, The predetermined SSB position is a first SSB position in the SSB positions in the SSB burst for actually transmitting SSBs.

52. The terminal device of any one of claims 49-51, wherein The information of the SSB positions in the SSB burst for actually transmitting SSBs comprises information of the predetermined SSB position; or The information of the SSB positions in the SSB burst for actually transmitting SSBs does not comprise information of the predetermined SSB position.

53. The terminal device of any one of claims 49 to 52, wherein, The information of the SSB positions in the SSB burst for actually transmitting SSBs further comprises a position of the predetermined SSB position in the SSB positions in the same slot as the predetermined SSB position.

54. The terminal device of any one of claims 46-53, wherein, The terminal device further comprises a processing unit configured to: obtain the activation information of the SSB based on one or more of the following manners: The activation information of the SSB is carried in configuration information of the SSB; and / or The activation information is sent to the terminal device by the network device after the configuration information of the SSB; and / or The activation information is pre-agreed.

55. The terminal device of claim 54, wherein, The activation information comprises one or more of the following: activation indication information for indicating activation of the SSB; deactivation indication information for indicating deactivation of the SSB; information of a transmission start time of the SSB; information of a transmission end time of the SSB; information of a transmission duration of the SSB; secondary cell state information in the configuration information of the secondary cell; period information of the SSB; information of an SSB index.

56. The terminal device of claim 55, wherein, The transmission start time of the SSB is determined based on one or more of the following: a time when the terminal device receives the configuration information of the SSB; a first resource available for transmitting SSB after the terminal device receives the configuration information of the SSB; a first resource for actually transmitting SSB after the terminal device receives the configuration information of the SSB; a first resource available for transmitting SSB after a preset time duration from when the terminal device receives the configuration information of the SSB; a first resource for actually transmitting SSB after the preset time duration from when the terminal device receives the configuration information of the SSB; a first resource in a SSB burst for actually transmitting SSB after the preset time duration from when the terminal device receives the configuration information of the SSB; a time when the terminal device receives activation indication information of the SSB; a first resource available for transmitting SSB after a time when the terminal device sends feedback information, the feedback information comprising feedback information of the configuration information of the SSB or feedback information of the activation information; a first resource for actually transmitting SSB after a time when the terminal device sends the feedback information. The first resource for actually transmitting the SSB in a SSB burst set after the time when the terminal device transmits the feedback information.

57. The terminal device of claim 56, wherein, The preset time length is determined based on one or more of the following: The preset time length is informed to the terminal device by high layer signaling; or, The preset time length is pre-agreed.

58. The terminal device of claim 56 or 57, wherein, The preset time length is three times the number of slots per subframe.

59. The terminal device of any one of claims 55-58, wherein, The transmission end time of the SSB is determined based on one or more of the following: The reporting time of the measurement report of the terminal device; The time when the terminal device receives the deactivation indication information of the SSB; The time when the terminal device receives the deactivation indication information of the secondary cell. The transmission duration of the SSB is determined based on one or more of the following:

60. The terminal device of any one of claims 55-59, wherein, The duration of the transmission duration; The duration of the timer used to record the transmission duration; The number of periods of SSB transmission. The time granularity for indicating the transmission start time of the SSB, the transmission end time of the SSB, the transmission duration of the SSB, and the preset time length includes one or more of the following: symbol, half-slot, slot, frame.

61. The terminal device of any one of claims 55-60, wherein, The subcarrier spacing used to determine the time granularity is determined based on one or more of the following:

62. The terminal device of claim 61, wherein, The subcarrier spacing carried in the configuration information of the SSB; The subcarrier spacing used to transmit the configuration information of the SSB; The subcarrier spacing of the SSB of the primary cell; The subcarrier spacing of the secondary cell. In the case where the secondary cell state information is configured as activated, it is used to indicate that the terminal device activates the SSB when receiving the configuration information of the SSB; or, in the case where the secondary cell state information is configured as deactivated, it is used to indicate that the terminal device does not activate the SSB when receiving the configuration information of the SSB.

63. The terminal device of any one of claims 55-62, wherein, The transceiver is further configured to:

64. The terminal device of any one of claims 46-63, wherein, Send feedback information to the network device, the feedback information being used to trigger the network device to send the SSB, the feedback information including feedback information of the configuration information of the SSB or feedback information of the activation information. In the case where the configuration information of the SSB is carried in MAC signaling, the feedback information is the HARQ-ACK of the configuration information of the SSB; or, in the case where the configuration information of the SSB is carried in RRC signaling, the feedback information is the uplink response of the RRC signaling.

65. The terminal device of claim 64, wherein, 66. The terminal device of any one of claims 46-65, wherein The activation of the SSB is located before the activation indication information of the secondary cell; and / or, The activation of the SSB is located before the configuration information of the SSB; and / or, The activation of the SSB is located after the activation indication information of the secondary cell; and / or, The activation of the SSB is located after the configuration information of the SSB. The terminal device further comprises a processing unit configured to:

67. The terminal device of any one of claims 46 to 66, wherein, Perform operations related to the SSB based on the configuration information of the SSB; and / or, Perform operations related to the SSB based on the activation information of the SSB. The terminal device further comprises a processing unit configured to:

68. The terminal device of any one of claims 46 to 67, wherein, ​ In a case where the network device triggers transmission of the SSB for the terminal device, performing an operation related to the SSB based on activation indication information indicating SSB activation sent by the network device; Or, In a case where the network device triggers transmission of the SSB for another terminal device other than the terminal device, performing an operation related to the SSB based on configuration information of the SSB sent by the network device.

69. The terminal device of claim 67 or 68, wherein, The operation related to the SSB includes: detecting the SSB; and / or, performing a puncturing operation on a channel based on the SSB.

70. A network device, comprising: Comprise: a transceiver unit configured to send, to a terminal device, configuration information of a synchronization signal broadcast channel block (SSB), the SSB being an on-demand SSB.

71. The network device of claim 70, wherein, The configuration information of the SSB is carried in one or more of the following: configuration information of a secondary cell, activation indication information of a secondary cell, RRC signaling, MAC signaling, multicast signaling, broadcast signaling.

72. The network device of claim 70 or 71, wherein, The configuration information of the SSB includes SSB resource information available for transmission of the SSB, the SSB resource information including one or more of the following: frequency information of the SSB; information of SSB positions in an SSB burst used for actual transmission of the SSB; period information of the SSB; subcarrier spacing of the SSB; bandwidth of the SSB; downlink transmission power of the SSB; secondary cell identification; resource sequence numbers corresponding to the plurality of SSB resource information included in the configuration information of the SSB.

73. The network device of claim 72, wherein, The information of SSB positions in the SSB burst used for actual transmission of the SSB includes an offset between a predetermined SSB position and an SSB position in the SSB burst used for actual transmission of the SSB.

74. The network device of claim 73, wherein, The SSB position includes an SSB index.

75. The network device of claim 73 or 74, wherein, The predetermined SSB position is a first SSB position in the plurality of SSB positions in the SSB burst used for actual transmission of the SSB.

76. The network device of any one of claims 73 to 75, wherein: the information of SSB positions in the SSB burst used for actual transmission of the SSB includes information of the predetermined SSB position; or the information of SSB positions in the SSB burst used for actual transmission of the SSB does not include information of the predetermined SSB position. 77.The network device according to any one of claims 73-76, characterized by, The information of SSB positions in the SSB burst used for actual transmission of the SSB further includes a position of the predetermined SSB position among the plurality of SSB positions in the same time slot as the predetermined SSB position.

78. The network device of any one of claims 70 to 77, wherein: the configuration information of the SSB further includes activation information of the SSB; and / or the activation information is sent by the network device to the terminal device after the configuration information of the SSB; and / or the activation information is pre-agreed.

79. The network device of claim 78, wherein, The activation information includes one or more of the following: activation indication information indicating SSB activation; deactivation indication information indicating SSB deactivation; information of a transmission start time of the SSB; information of a transmission end time of the SSB; information of a transmission duration of the SSB; secondary cell state information in the configuration information of the secondary cell; Periodic information of SSBs; Information of SSB index.

80. The network device of claim 79, wherein, The transmission start time of the SSB is determined based on one or more of the following: The time when the terminal device receives the configuration information of the SSB; The first resource available for transmitting the SSB after the terminal device receives the configuration information of the SSB; The first resource for actually transmitting the SSB after the terminal device receives the configuration information of the SSB; The first resource available for transmitting the SSB after a preset time duration from the time when the terminal device receives the configuration information of the SSB; The first resource for actually transmitting the SSB after the preset time duration from the time when the terminal device receives the configuration information of the SSB; The first resource for actually transmitting the SSB in the SSB burst after the preset time duration from the time when the terminal device receives the configuration information of the SSB; The time when the terminal device receives the activation indication information of the SSB; The first resource available for transmitting the SSB after the time when the terminal device sends the feedback information, wherein the feedback information includes feedback information of the configuration information of the SSB or feedback information of the activation information; The first resource for actually transmitting the SSB after the time when the terminal device sends the feedback information; The first resource for actually transmitting the SSB in the SSB burst after the time when the terminal device sends the feedback information.

81. The network device of claim 80, wherein, The preset time duration is determined based on one or more of the following: The preset time duration is notified to the terminal device by high-layer signaling; or The preset time duration is pre-agreed.

82. The network device of claim 80 or 81, wherein, The preset time duration is three times the number of slots per subframe. 83.The network device according to any one of claims 79-82, characterized by, The transmission end time of the SSB is determined based on one or more of the following: The reporting time of the measurement report of the terminal device; The time when the terminal device receives the deactivation indication information of the SSB; The time when the terminal device sends the feedback information of the deactivation indication information of the SSB; The time when the terminal device receives the deactivation indication information of the secondary cell. 84.The network device according to any one of claims 79-83, characterized by, The transmission duration of the SSB is determined based on one or more of the following: The duration of the transmission duration; The duration of the timer used to record the transmission duration; The number of periods of SSB transmission. 85.The network device according to any one of claims 79-84, characterized by, The time granularity used to represent the transmission start time of the SSB, the transmission end time of the SSB, the transmission duration of the SSB, and the preset time duration includes one or more of the following: symbol, half-slot, slot, frame.

86. The network device of claim 85, wherein, The subcarrier spacing used to determine the time granularity is determined based on one or more of the following: The subcarrier spacing carried in the configuration information of the SSB; The subcarrier spacing used to transmit the configuration information of the SSB; The subcarrier spacing of the SSB of the primary cell; The subcarrier spacing of the secondary cell. 87.The network device according to any one of claims 79-81, characterized by, In a case where the secondary cell state information is configured as activated, the SSB is activated when the terminal device receives the configuration information of the SSB; or in a case where the secondary cell state information is configured as deactivated, the SSB is not activated when the terminal device receives the configuration information of the SSB.

88. The network device of any of claims 70-87, wherein, The transceiver is further configured to: receive feedback information sent by the terminal device, the feedback information being used to trigger the network device to send the SSB, and the feedback information including feedback information of the configuration information of the SSB or feedback information of the activation information.

89. The network device of claim 88, wherein, In a case where the configuration information of the SSB is carried in MAC signaling, the feedback information is a HARQ-ACK of the configuration information of the SSB; or in a case where the configuration information of the SSB is carried in RRC signaling, the feedback information is an uplink response of the RRC signaling. 90.The network device of any one of claims 70-89, wherein the activation of the SSB is located before the activation indication information of the secondary cell; and / or the activation of the SSB is located before the configuration information of the SSB; and / or the activation of the SSB is located after the activation indication information of the secondary cell; and / or the activation of the SSB is located after the configuration information of the SSB.

91. A terminal device, comprising: A terminal device 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 a signal, so that the terminal device performs the method according to any one of claims 1-24.

92. A network device, comprising: A network device 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 a signal, so that the network device performs the method according to any one of claims 25-45.

93. An apparatus, comprising: An apparatus comprising a processor configured to invoke a program from a memory, so that the apparatus performs the method according to any one of claims 1-45.

94. A chip, comprising: An apparatus comprising a processor configured to invoke a program from a memory, so that a device installed with the chip performs the method according to any one of claims 1-45.

95. A computer-readable storage medium, comprising: A computer program product having a program stored thereon, the program causing a computer to perform the method according to any one of claims 1-45.

96. A computer program product, characterized in that, A computer program product having a program stored thereon, the program causing a computer to perform the method according to any one of claims 1-45.

97. A computer program characterised in that, The computer program product causes a computer to perform the method according to any one of claims 1-45.

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