Methods for transmitting SSB on secondary cell, and apparatus

Abstract

The present application relates to methods for transmitting an SSB on a secondary cell, and an apparatus. In a method, a terminal may learn, by means of configuration information, M secondary cells configured with SSB resources, and learn, by means of indication information, that a first SSB is received on a first secondary cell among the M secondary cells. In this way, the terminal does not need to acquire the first SSB of the first secondary cell by means of blind detection, thereby reducing the power consumption of the terminal for detecting SSBs.

Description

A method and device for transmitting SSB on a secondary cell

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on December 6, 2023, with application number 202311670752.4, and the priority of the Chinese patent application entitled “A method and apparatus for transmitting SSB on a secondary cell”, all contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communication technology, and in particular to a method and apparatus for transmitting an SSB on a secondary cell. Background Art

[0003] Currently, terminals can communicate simultaneously on multiple cells, supporting high-speed data transmission. These multiple cells can include a primary cell (PCell) and at least one secondary cell (SCell). This allows for carrier aggregation (CA).

[0004] Typically, a terminal can obtain a cell's synchronization signal and physical broadcast channel block (SSB) through blind detection, enabling synchronization. However, in a CA scenario, obtaining the SCell's SSB through blind detection is complex, increasing the terminal's power consumption when detecting SSBs. Therefore, reducing the power consumption of terminals during SSB detection has become a pressing technical issue. Summary of the Invention

[0005] The present application provides a method and apparatus for transmitting SSB on a secondary cell, which can reduce the power consumption of a terminal when detecting SSB.

[0006] In a first aspect, a method for transmitting an SSB on a secondary cell is provided. The method can be executed by a terminal, or by a module (such as a processor, a chip, or a chip system) applied to the terminal, or by a logical node, a logical module, or software that can implement all or part of the terminal functions. In this method, configuration information from a network device can be received, and the configuration information is used to indicate SSB resources in M ​​secondary cells, where M is a positive integer. Indication information from the network device can also be received, and the indication information is used to indicate receiving a first SSB on a first secondary cell, where the first secondary cell is one of the M secondary cells. In this way, the first SSB from the network device can be received on the SSB resources in the first secondary cell.

[0007] It can be seen that in the above embodiment, the terminal can obtain the M secondary cells configured with SSB resources through the configuration information, and obtain the first SSB received on the first secondary cell among the M secondary cells through the indication information. In this way, the terminal does not need to obtain the first SSB of the first secondary cell through blind detection, thereby reducing the power consumption of the terminal in detecting SSB.

[0008] In combination with the first aspect, optionally, the indication information includes a cell index of the first secondary cell.

[0009] In combination with the first aspect, optionally, the indication information is a bitmap, and one bit in the bitmap corresponds to the first secondary cell.

[0010] In combination with the first aspect, optionally, the method further includes: sending a signal to the network device, where the signal is used to request the network device to send SSB on N secondary cells, where the N secondary cells include the first secondary cell, and N is a positive integer.

[0011] As can be seen, in the above embodiment, the terminal can request the network device to transmit SSBs on N secondary cells via a signal. In other words, when the terminal has a data transmission requirement, the terminal can proactively send a signal to the network device so that the terminal can receive the SSBs of the secondary cells and synchronize with them. This ensures that the terminal's data transmission needs are met.

[0012] In combination with the first aspect, optionally, the method further includes: the indication information is further used to indicate receiving a second SSB on a second secondary cell, where the second secondary cell is one of the M secondary cells, and the second secondary cell is different from the first secondary cell. Receiving the second SSB from the network device on the SSB resource in the second secondary cell.

[0013] It can be seen that in the above embodiment, the terminal can also be informed through the indication information to receive the second SSB on the second secondary cell, so that the terminal can synchronize with the second secondary cell. In this way, the terminal can flexibly perform data transmission based on its own data transmission requirements.

[0014] In a second aspect, a method for transmitting an SSB on a secondary cell is provided. The method can be performed by a network device, or by a module (such as a processor, a chip, or a chip system) applied to the network device, or by a logical node, a logical module, or software that can implement all or part of the network device functions. In this method, configuration information can be sent to the terminal, and the configuration information is used to indicate the synchronization signal block SSB resources in M ​​secondary cells, where M is a positive integer. Indication information can also be sent to the terminal, and the indication information is used to indicate receiving a first SSB on a first secondary cell, where the first secondary cell is one of the M secondary cells. Thus, the first SSB can be sent to the terminal on the SSB resources in the first secondary cell.

[0015] It can be seen that in the above embodiment, the network device can indicate the M secondary cells configured with SSB resources to the terminal through configuration information, and send indication information, so that the terminal knows to receive the first SSB on the first secondary cell among the M secondary cells. In this way, the terminal does not need to obtain the first SSB of the first secondary cell through blind detection, which reduces the power consumption of the terminal in detecting SSB.

[0016] In combination with the second aspect, optionally, the indication information includes a cell index of the first secondary cell.

[0017] In combination with the second aspect, optionally, the indication information is a bit map, and one bit in the bit map corresponds to the first secondary cell.

[0018] In combination with the second aspect, optionally, the method further includes: receiving a signal from the terminal, the signal being used to request the network device to send SSB on N secondary cells, the N secondary cells including the first secondary cell, and N being a positive integer.

[0019] In combination with the second aspect, optionally, the method also includes: the indication information is also used to indicate receiving a second SSB on a second secondary cell, the second secondary cell is one of the M secondary cells, and the second secondary cell is different from the first secondary cell; and the second SSB is sent to the terminal on the SSB resources in the second secondary cell.

[0020] As can be seen, in the above embodiment, the network device can also instruct the second SSB to be received on the second secondary cell, so that the terminal can receive the second SSB on the second secondary cell and synchronize with the second secondary cell. In this way, the terminal can flexibly select the corresponding secondary cell for data transmission based on its own data transmission needs.

[0021] In a third aspect, a method for transmitting an SSB on a secondary cell is provided. The method can be executed by a terminal, or by a module (such as a processor, chip, or chip system) applied to the terminal, or by a logical node, logical module, or software that can implement all or part of the terminal functions. In this method, a first signal can be sent to a network device, and the first signal is used to request the network device to send a first SSB on a first secondary cell. Thus, the first SSB from the network device can be received on the first secondary cell.

[0022] It can be seen that in the above embodiment, the terminal can request the network device to send the first SSB on the first secondary cell through the first signal, so that the terminal can receive the first SSB on the requested first secondary cell. In this way, the terminal does not need to obtain the first SSB of the first secondary cell through blind detection, which reduces the power consumption of the terminal in detecting the SSB.

[0023] In combination with the third aspect, optionally, the first secondary cell is the secondary cell with the smallest cell index among the N secondary cells, the N secondary cells include the secondary cells that do not receive SSB among the secondary cells configured with SSB resources, and N is a positive integer; and / or, the frequency band index of the frequency band where the first secondary cell is located is the minimum frequency band index among the frequency bands where the N secondary cells are located.

[0024] In combination with the third aspect, optionally, the method also includes: the first signal is also used to request the network device to send a second SSB on a second secondary cell, the second secondary cell is one of the N secondary cells, and the second secondary cell is different from the first secondary cell; on the second secondary cell, the second SSB from the network device is received.

[0025] As can be seen, in the above embodiment, the first signal is also used to request the network device to send a second SSB on the second secondary cell. In this way, the terminal can also receive the second SSB on the second secondary cell and synchronize with the second secondary cell. In this way, the terminal can flexibly select the corresponding secondary cell for data transmission based on its own data transmission needs.

[0026] In a fourth aspect, a method for transmitting an SSB on a secondary cell is provided. The method can be performed by a network device, or by a module (such as a processor, chip, or chip system) applied to the network device, or by a logical node, logical module, or software that can implement all or part of the network device functions. In this method, a first signal from a terminal can be received, and the first signal is used to request the network device to send a first SSB on a first secondary cell. Thus, the first SSB can be sent to the terminal on the first secondary cell.

[0027] As can be seen, in the above embodiment, the network device can receive the first signal so as to send the first SSB on the first secondary cell requested by the terminal. In this way, the terminal does not need to obtain the first SSB of the first secondary cell through blind detection, thereby reducing the power consumption of the terminal in detecting the SSB.

[0028] In combination with the fourth aspect, optionally, the first secondary cell is the secondary cell with the smallest cell index among the N secondary cells, the N secondary cells include the secondary cells that do not receive SSB among the secondary cells configured with SSB resources, and N is a positive integer; and / or, the frequency band index of the frequency band where the first secondary cell is located is the minimum frequency band index among the frequency bands where the N secondary cells are located.

[0029] In combination with the fourth aspect, optionally, the method also includes: the first signal is also used to request the network device to send a second SSB on a second secondary cell, the second secondary cell is one of the N secondary cells, and the second secondary cell is different from the first secondary cell; on the second secondary cell, the second SSB is sent to the terminal.

[0030] As can be seen, in the above embodiment, the first signal is also used to request the network device to send a second SSB on the second secondary cell. In this way, the terminal can also receive the second SSB on the second secondary cell and synchronize with the second secondary cell. In this way, the terminal can flexibly select the corresponding secondary cell for data transmission based on its own data transmission needs.

[0031] In a fifth aspect, a communication device is provided, comprising a unit or module for implementing the method described in any one of aspects 1 to 4. The communication device may be a terminal or network device, or a module of a terminal or network device (e.g., a processor, chip, or chip system), or a logical node, logical module, or software that can implement all or part of the functions of a terminal or network device.

[0032] In a sixth aspect, a communication device is provided, comprising at least one processor; wherein the at least one processor is configured to execute any of the methods described in any one of the first to fourth aspects. The communication device may be a terminal or a network device, or a module of a terminal or a network device (e.g., a processor, a chip, or a chip system), or a logical node, a logical module, or software that can implement all or part of the functions of a terminal or a network device. At least one processor may execute a computer program or instruction in a memory so that the above method is executed. The memory may be included in the communication device or may be located outside the communication device. In addition, the communication device may further include an interface.

[0033] In the seventh aspect, a communication system is provided, the communication system including a terminal and a network device; the terminal is used to execute the method as described in any one of the first aspects; the network device is used to execute the method as described in any one of the second aspects.

[0034] In an eighth aspect, a communication system is provided, the communication system comprising a terminal and a network device; the terminal is used to execute the method as described in any one of the third aspects; the network device is used to execute the method as described in any one of the fourth aspects.

[0035] In a ninth aspect, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and when the computer instructions are executed, the computer executes any one of the methods described in any one of the first to fourth aspects.

[0036] In a tenth aspect, a computer program product is provided, the computer program product comprising: a computer program code, and when the computer program code is executed by a computer, the computer executes any one of the methods described in any one of the first to fourth aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] FIG1 is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application;

[0038] FIG2 is a schematic diagram of carrier aggregation;

[0039] FIG3 is a schematic flow chart of a method for transmitting an SSB on a secondary cell according to an embodiment of the present application;

[0040] FIG4 is a schematic flow chart of another method for transmitting an SSB on a secondary cell provided in an embodiment of the present application;

[0041] FIG5 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0042] FIG6 is a schematic structural diagram of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0043] FIG1 is a schematic diagram of the architecture of a communication system 1000 provided in accordance with an embodiment of the present application. As shown in FIG1 , the communication system 1000 includes a radio access network (RAN) 100 and a core network 200. Optionally, the communication system 1000 may also include the Internet 300. The RAN 100 includes at least one RAN node (e.g., 110a and 110b in FIG1 , collectively referred to as 110), and may also include at least one terminal (e.g., 120a-120j in FIG1 , collectively referred to as 120). The RAN 100 may also include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices (not shown in FIG1 ). The terminal 120 is wirelessly connected to the RAN node 110, and the RAN node 110 is wirelessly or wiredly connected to the core network 200. The core network devices in the core network 200 and the RAN node 110 in the RAN 100 may be independent and distinct physical devices, or they may be the same physical device that integrates the logical functions of the core network devices and the logical functions of the RAN nodes. Terminals and RAN nodes may be connected to each other via wired or wireless means.

[0044] RAN100 can be an evolved universal terrestrial radio access (E-UTRA) system, a new radio (NR) system, or a future radio access system defined in the 3rd Generation Partnership Project (3GPP), or a WiFi system. RAN100 can also include two or more of the aforementioned different radio access systems. RAN100 can also be an open RAN (O-RAN).

[0045] A RAN node, also known as a radio access network device, a RAN entity or an access node, is used to help terminals access the communication system wirelessly.

[0046] In one application scenario, a RAN node can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next-generation NodeB (gNB) in a 5G mobile communication system, a next-generation base station in a 6G mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system. A RAN node can be a macro base station (such as 110a in Figure 1), a micro base station, an indoor station (such as 110b in Figure 1), a relay node, or a donor node.

[0047] In another application scenario, multiple RAN nodes can collaborate to help terminals achieve wireless access, with different RAN nodes implementing portions of the base station's functions. For example, a RAN node can be a centralized unit (CU), a distributed unit (DU), or a radio unit (RU). The CU implements the base station's radio resource control protocol and packet data convergence protocol (PDCP) functions, as well as the service data adaptation protocol (SDAP) functions. The DU implements the base station's radio link control layer and medium access control (MAC) layer functions, as well as some or all of the physical layer functions. For detailed descriptions of each of the above protocol layers, please refer to the relevant 3GPP technical specifications. The RU can be used to implement the transmission and reception of radio frequency signals. The CU and DU can be two independent RAN nodes, or they can be integrated into the same RAN node, such as in a baseband unit (BBU). The RU can be included in radio frequency equipment, such as a remote radio unit (RRU) or an active antenna unit (AAU). The CU can be further divided into two types of RAN nodes: CU-control plane and CU-user plane.

[0048] In different systems, RAN nodes may have different names. For example, in an O-RAN system, the CU may be called an open CU (O-CU), the DU may be called an open DU (O-DU), and the RU may be called an open RU (O-RU). The RAN node in the embodiments of the present application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module. For example, the RAN node may be a server loaded with the corresponding software module. The embodiments of the present application do not limit the specific technology and specific device form adopted by the RAN node. For ease of description, the following description takes a base station as an example of a RAN node. In the present application, base station and network device may be used interchangeably.

[0049] A terminal is a device with wireless transceiver capabilities that can send signals to a base station or receive signals from a base station. A terminal may also be referred to as a terminal device, user equipment (UE), mobile station, mobile terminal, etc. Terminals can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wearable, smart transportation, smart city, etc. A terminal can be a mobile phone, tablet computer, computer with wireless transceiver capabilities, wearable device, vehicle, airplane, ship, robot, robotic arm, smart home device, etc. The embodiments of this application do not limit the specific technology and specific device form adopted by the terminal.

[0050] Base stations and terminals can be fixed or mobile. They can be deployed on land, indoors or outdoors, handheld or vehicle-mounted; on water; or on aircraft, balloons, and satellites. The embodiments of this application do not limit the application scenarios of base stations and terminals.

[0051] The roles of base stations and terminals can be relative. For example, the helicopter or drone 120i in Figure 1 can be configured as a mobile base station. To terminals 120j accessing the wireless access network 100 via 120i, terminal 120i is a base station. However, to base station 110a, 120i is a terminal, meaning that communication between 110a and 120i occurs via a wireless air interface protocol. Of course, communication between 110a and 120i can also occur via a base station-to-base station interface protocol. In this case, 120i is also a base station relative to 110a. Therefore, base stations and terminals can be collectively referred to as communication devices. 110a and 110b in Figure 1 can be referred to as communication devices with base station functionality, while 120a-120j in Figure 1 can be referred to as communication devices with terminal functionality.

[0052] Communication between base stations and terminals, between base stations, and between terminals can be carried out through authorized spectrum, unauthorized spectrum, or both; communication can be carried out through spectrum below 6 gigahertz (GHz), spectrum above 6 GHz, or spectrum below 6 GHz and spectrum above 6 GHz. The embodiments of the present application do not limit the spectrum resources used for wireless communication.

[0053] In the embodiments of the present application, the functions of the base station may also be performed by a module (such as a chip) in the base station, or by a control subsystem that includes the base station functions. The control subsystem that includes the base station functions here may be a control center in the above-mentioned application scenarios such as smart grid, industrial control, smart transportation, and smart city. The functions of the terminal may also be performed by a module (such as a chip or modem) in the terminal, or by a device that includes the terminal functions.

[0054] In order to facilitate understanding of the contents of this solution, some of the terms involved in the embodiments of this application are explained below to facilitate understanding by those skilled in the art. This part is only for ease of understanding and cannot be regarded as a specific limitation of this application.

[0055] 1. Reference Signal

[0056] Reference signals can be used for time-frequency synchronization, etc., that is, the terminal can obtain downlink timing based on the reference signals. Downlink timing can be understood as the boundary of at least one of the system frame, half-frame, time slot, subframe, symbol, etc.

[0057] The reference signal may be an SSB, a tracking reference signal (TRS), or a positioning reference signal (PRS), etc., which is not limited in this application.

[0058] Generally speaking, network equipment can configure SSB resources, for example, which may include one or more of time domain resources, frequency domain resources, code domain resources, spatial domain resources, and power domain resources.

[0059] The time domain resources include at least one of the period of the SSB, the time slot level offset within the period, the symbol index within the time slot, the time domain position of the SSB in the half frame, etc. The time domain position of the SSB in the half frame is configured by a bit map (or called SSB burst position (ssb-PositionsInBurst)). The bit map can be 4 bits, 8 bits or 64 bits. Among them, the first bit (i.e., the leftmost bit) in the bit map corresponds to SSB index (index) 0, the second bit corresponds to SSB index 1, and so on. When a bit in the bit map is set to 0, it means that the corresponding SSB is not transmitted, that is, the SSB is not sent. When the bit is set to 1, it means that the corresponding SSB is transmitted, that is, the SSB is sent. The opposite is also possible.

[0060] Frequency domain resources include at least one of the frequency position of SSB, subcarrier spacing of SSB, bandwidth, starting resource block (RB), frequency hopping configuration, frequency domain comb configuration, etc.

[0061] The code domain resources include at least one of an SSB sequence, a cyclic shift of an SSB, and the like.

[0062] The power domain resources include at least one of the power, power range, power offset, and power threshold of the SSB. The power of the SSB can be understood as the transmit power of the SSB, and more specifically, the transmit power of the secondary synchronization signal (SSS) in the SSB. The power range can include an interval determined by a maximum power value and a minimum power value, and the power range may include or exclude boundary points, such as a maximum power value and / or a minimum power value.

[0063] 2. Signal

[0064] A signal mentioned in this application (such as the first signal below) can be used to request a network device to send an SSB on at least one secondary cell (such as at least one of the first secondary cell and the second secondary cell below). This signal can be understood as a channel or a wake-up signal (WUS).

[0065] A certain channel mentioned in this application may refer to a physical random access channel (PRACH), a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH).

[0066] Among them, PRACH can be divided into non-contention PRACH and contention PRACH.

[0067] It should be pointed out that in this application, PUCCH and PUSCH are only used as examples of uplink control channels and uplink data channels respectively. In different systems and different scenarios, data channels and control channels may have different names, and the embodiments of this application do not limit this.

[0068] Optionally, the signal may have an association relationship with at least one secondary cell, which can be specifically understood as having an association relationship with the SSB on each secondary cell in at least one secondary cell (the SSB is the SSB corresponding to the bit value of 1 in ssb-PositionsInBurst). That is, after the network device receives the signal, it can be learned through the association relationship that the SSB is sent on at least one secondary cell. Alternatively, after the terminal sends the signal, it indicates a request to send the SSB on at least one secondary cell. The association relationship can be predefined or preconfigured, or the association relationship can be indicated by the network device to the terminal, that is, the network device indicates which secondary cells the signal is associated with, which can also be understood as indicating which secondary cells the signal is associated with SSB on.

[0069] Optionally, the number of secondary cells associated with different signals may be the same or different, for example, the number of secondary cells associated with signal 1 is 2, the number of secondary cells associated with signal 2 is 3, and so on.

[0070] Optionally, the secondary cells associated with different signals may be partially identical or completely different. For example, signal 1 is associated with secondary cell 1, and signal 2 is associated with secondary cell 1 and secondary cell 2. That is, the secondary cells associated with signal 1 and signal 2 are partially identical. Another example is that signal 1 is associated with secondary cell 1, and signal 2 is associated with secondary cell 2 and secondary cell 3. That is, the secondary cells associated with signal 1 and signal 2 are completely different.

[0071] Optionally, when the signal is a PUCCH or a PUSCH, the signal is associated with at least one secondary cell, which can be understood as: the uplink control information (UCI) carried in the PUCCH or PUSCH is associated with at least one secondary cell. Or, the buffer status report (BSR) carried in the PUSCH is associated with at least one secondary cell. Association with at least one secondary cell can be understood as association with the SSB on each secondary cell in at least one secondary cell.

[0072] 3. Component Carrier (CC)

[0073] CC is a continuous frequency range that complies with system regulations. This frequency range can be determined by the center frequency of the carrier (denoted as the carrier frequency) and the bandwidth of the carrier.

[0074] To increase data transmission rates and reduce latency, carrier aggregation (CA) technology was proposed. CA refers to the aggregation of multiple contiguous or non-contiguous carriers into a larger bandwidth. Generally, based on the frequency bands in which the aggregated carriers reside, CA can be categorized into intra-band carrier aggregation (intra-band CA) and inter-band carrier aggregation (inter-band CA). Intra-band CA can be categorized into intra-band contiguous carrier aggregation and intra-band non-contiguous carrier aggregation. As shown in Figure 2-1, aggregating contiguous carriers 1 and 2 on frequency band 1 is called intra-band contiguous carrier aggregation. As shown in Figure 2-2, aggregating non-contiguous carriers 1 and 2 on frequency band 1 is called intra-band non-contiguous carrier aggregation. As shown in Figure 2-3, aggregating carriers 1 on frequency band 1 and carrier 2 on frequency band 2 is called inter-band CA.

[0075] In CA technology, a terminal can communicate on multiple cells simultaneously, thereby supporting high-speed data transmission. The multiple cells may include a primary cell and at least one secondary cell.

[0076] Among them, the primary cell is the cell where the terminal and the network device establish the initial connection (connection establishment), or the cell where the terminal reestablishes the radio resource control (RRC) connection, or the primary cell executed during the handover process; the primary cell is responsible for the radio resource control RRC communication with the terminal, and the CC in the primary cell is called the primary component carrier (PCC).

[0077] Compared to the primary cell, the secondary cell can provide additional wireless resources. Optionally, multiple secondary cells can be co-located or non-co-located. Co-located deployment can be understood as having two carriers at the same site, such as the same network device. These two carriers are co-located carriers. These two carriers can belong to different secondary cells. Non-co-located deployment can be understood as being at different sites, for example, the carrier of one network device belongs to one secondary cell, and the carrier of another network device belongs to another secondary cell, and the two network devices are at different sites.

[0078] Generally, in the intra-band CA scenario, the downlink timing of the secondary cell can be the same as the downlink timing of the primary cell. That is, the network device may not send SSB on the secondary cell. In the inter-band CA scenario, the downlink timing of CCs on different frequency bands may be different, so the network device can send SSB on the secondary cell, so that the terminal can obtain the SSB on the secondary cell through blind detection and synchronize. At the same time, the network device can also send SSB on non-co-station secondary cells, so that the terminal can obtain the SSB on non-co-station secondary cells through blind detection and synchronize. It can be seen that in these cases, the terminal needs to obtain the SSB on the secondary cell through blind detection. This will increase the power consumption of the terminal to detect SSB. Therefore, how to reduce the power consumption of the terminal to detect SSB has become a technical problem that needs to be solved urgently at the current stage. Based on this, the present application provides an embodiment shown in Figure 3 or Figure 4 to solve this problem.

[0079] The embodiments of the present application are described in detail below. Specifically, the terminal mentioned below may be the terminal involved in Figure 1, and the network device mentioned below may be the network device involved in Figure 1. It should be pointed out that the message name between the network elements or the name of the parameters in the message in the following embodiment is only an example, and other names may be used in the specific implementation. The embodiments of the present application do not specifically limit this. The processing performed by the single execution subject (terminal or network device) shown in the embodiment of the present application can also be divided into executions by multiple execution subjects, and these execution subjects can be logically and / or physically separated. For example, the processing performed by the network device can be divided into executions by at least one of the CU, DU and RU.

[0080] As shown in FIG3 , a method for transmitting an SSB on a secondary cell is provided in an embodiment of the present application, and the method includes but is not limited to the following steps:

[0081] 301. A network device sends configuration information to a terminal, where the configuration information is used to indicate SSB resources in M ​​secondary cells, where M is a positive integer.

[0082] Correspondingly, the terminal receives configuration information from the network device.

[0083] Optionally, the configuration information is used to indicate the SSB resources in the M secondary cells, which can be understood as: the configuration information is used to indicate the SSB resources of each secondary cell in the M secondary cells. The SSB resources here can refer to the relevant description above and are not repeated here.

[0084] In a possible implementation, the configuration information may be carried in an RRC message or a medium access control-control element (MAC CE).

[0085] 302. The network device sends indication information to the terminal, where the indication information is used to instruct the terminal to receive a first SSB on a first secondary cell, where the first secondary cell is one of M secondary cells.

[0086] Correspondingly, the terminal receives the instruction information from the network device.

[0087] It should be understood that the first SSB may include the SSB corresponding to the bit value of 1 in ssb-PositionsInBurst in the first secondary cell.

[0088] The indication information is used to indicate that the first SSB is received on the first secondary cell, which can be understood as one of the following:

[0089] 1. The indication information includes the cell index of the first secondary cell.

[0090] It should be noted that the cell index of a secondary cell mentioned in this application can be used to identify the secondary cell. Optionally, the cell index of the secondary cell can be a physical cell identifier (PCI) or a cell global identity (CGI). The cell index of the secondary cell can also have other names, such as the cell identifier of the secondary cell, the cell number of the secondary cell, etc., which are not limited in this application.

[0091] 2. The indication information is a bitmap, where one bit in the bitmap corresponds to the first secondary cell. For example, the first bit (i.e., the leftmost bit, or the most significant bit (MSB)) in the bitmap corresponds to secondary cell 1, the second bit corresponds to secondary cell 2, and so on. In other words, different bits in the bitmap correspond to different secondary cells. For example, the cell indices of the secondary cells correspond to the bits in the bitmap in ascending order. Alternatively, the cell indices of the secondary cells correspond to the bits in the bitmap in descending order.

[0092] When a bit in this bitmap is set to 0, it indicates that the corresponding SSB is not transmitted on the secondary cell corresponding to the bit, that is, the network device does not send the SSB on the secondary cell, and the terminal does not receive the SSB on the secondary cell. When the bit is set to 1, it indicates that the corresponding SSB is transmitted on the secondary cell corresponding to the bit, that is, the network device sends the SSB on the secondary cell, and the terminal receives the SSB on the secondary cell. The opposite is also true.

[0093] 3. The indication information can be P bits, and P bits correspond to 2 P states, one of which indicates receiving the first SSB on the first secondary cell. P is a positive integer.

[0094] Optionally, different states corresponding to the P bit can represent different contents, specifically:

[0095] For example, M is 1, assuming that the first secondary cell is configured with SSB resources. When P is 1, there are two corresponding states: '1' and '0'. '1' can indicate that the first SSB is transmitted, i.e., the network device sends the first SSB on the first secondary cell and the terminal receives the first SSB on the first secondary cell; '0' can indicate that the first SSB is not transmitted, i.e., the network device does not send the first SSB on the first secondary cell and the terminal does not receive the first SSB on the first secondary cell. The reverse is also possible.

[0096] For another example, M is 3, assuming that secondary cell 0 to secondary cell 2 are configured with SSB resources. When P is 2, there are four corresponding states: '00', '01', '10', and '11'. '00' may indicate that no SSB is transmitted, that is, the network device does not send the corresponding SSB on the three secondary cells, and the terminal does not receive the corresponding SSB on the three secondary cells; '01' may indicate that the network device sends the corresponding SSB on secondary cell 0, and the terminal receives the corresponding SSB on secondary cell 0. '10' may indicate that the network device sends the corresponding SSB on secondary cell 1, and the terminal receives the corresponding SSB on secondary cell 1. '11' may indicate that the network device sends the corresponding SSB on secondary cell 2, and the terminal receives the corresponding SSB on secondary cell 2.

[0097] It should be pointed out that the above are only some examples, and this application does not limit the specific content represented by different states corresponding to the P bit.

[0098] Optionally, the indication information may also be used to indicate reception of a second SSB on a second secondary cell. In this way, the terminal may also receive the second SSB from the network device on the SSB resources in the second secondary cell. The second secondary cell is one of the M secondary cells, and the second secondary cell is different from the first secondary cell. That is, when M is greater than 1, the network device may instruct the terminal to receive SSBs on multiple secondary cells among the M secondary cells. This application does not limit the number of secondary cells indicated by the network device.

[0099] It should be understood that the second SSB may include the SSB corresponding to the bit value of 1 in ssb-PositionsInBurst in the second secondary cell.

[0100] Optionally, the network device may instruct the terminal to receive SSBs on at least one of the M secondary cells through one or more indication messages. For example, one indication message is used to instruct the terminal to receive SSBs on a portion of the M secondary cells, and another indication message is used to instruct the terminal to receive SSBs on another portion of the M secondary cells. The number of secondary cells indicated by each indication message may be one or more, and is not limited herein.

[0101] It should be noted that, when there are multiple pieces of indication information, the network device may send the multiple pieces of indication information at one time, or send the multiple pieces of indication information separately in multiple times. The specific implementation method is not limited here.

[0102] The indication information is further used to indicate that the second SSB is received on the second secondary cell, which can be understood as:

[0103] (1) With respect to the above-mentioned method 1, the indication information may further include a cell index of the second secondary cell.

[0104] (2) With respect to the above-mentioned method 2, another bit in the bitmap (the indication information is a bitmap) corresponds to the second secondary cell.

[0105] (3) For the above-mentioned method 3, another state corresponding to the P bit indicates receiving the second SSB on the second secondary cell. For example, when P is 1, it corresponds to two states: '1' and '0'. '1' can indicate the transmission of the first SSB, that is, the network device sends the first SSB on the first secondary cell, and the terminal receives the first SSB on the first secondary cell; '0' can indicate the transmission of the second SSB, that is, the network device sends the second SSB on the second secondary cell, and the terminal receives the second SSB on the second secondary cell. The reverse is also possible.

[0106] Optionally, the indication information may be carried in, for example, a MAC CE, a message 2 (Msg2), or downlink control information (DCI), wherein Msg2 may be referred to as a random access response (RAR).

[0107] In one possible implementation, the network device may further receive a signal from the terminal, the signal being used to request the network device to transmit an SSB on N secondary cells, where the N secondary cells include the first secondary cell, and N is a positive integer. That is, before step 302, the network device may receive a signal from the terminal to trigger the network device to transmit indication information to the terminal. The signal here can refer to the relevant description above, that is, the signal can be understood as a channel or WUS, etc., and is not further described here.

[0108] Optionally, when the signal is a PRACH and the PRACH is a non-contention PRACH, the indication information may be carried in Msg2, for example.

[0109] Optionally, the N secondary cells are one or more of the M secondary cells. In other words, N is an integer greater than or equal to 1 and less than or equal to M.

[0110] Optionally, the N secondary cells may further include a second secondary cell.

[0111] 303. The network device sends a first SSB to the terminal on the SSB resources in the first secondary cell.

[0112] Correspondingly, the terminal receives the first SSB from the network device on the SSB resources in the first secondary cell.

[0113] It can be seen that in the above embodiment, the terminal can obtain the M secondary cells configured with SSB resources through the configuration information, and obtain the information through the indication information to receive the first SSB on the first secondary cell among the M secondary cells. In this way, the terminal does not need to obtain the first SSB of the first secondary cell through blind detection, which reduces the power consumption of the terminal in detecting SSB and is also beneficial to energy saving of network equipment.

[0114] As shown in FIG4 , another method for transmitting an SSB on a secondary cell is provided in an embodiment of the present application, and the method includes but is not limited to the following steps:

[0115] 401. The terminal sends a first signal to the network device, where the first signal is used to request the network device to send a first SSB on a first secondary cell.

[0116] Accordingly, the network device receives the first signal from the terminal. For details about the first signal, refer to the above description. That is, the first signal can be understood as a channel or WUS, etc., which is not detailed here. For details about the first SSB, refer to the description of step 302 in FIG. 3 .

[0117] The first secondary cell may be understood as a predefined or preconfigured cell, or a cell indicated by a network device. Specifically:

[0118] 1. The first secondary cell is the secondary cell with the smallest or largest cell index among N secondary cells, where N is a positive integer.

[0119] The N secondary cells include secondary cells configured with SSB resources where the terminal does not receive SSBs. This can also be understood as at least one of the following: the N secondary cells include secondary cells configured with SSB resources where the terminal cannot perform uplink transmission and / or downlink transmission, the N secondary cells include secondary cells configured with SSB resources where the terminal is not synchronized, and the N secondary cells include secondary cells configured with SSB resources where the terminal does not obtain secondary cell downlink timing.

[0120] Failure to receive an SSB does not necessarily mean that the SSB has not been received, because after step 402, the terminal can receive the SSB. For example, if a secondary cell does not transmit an SSB for a period of time, the terminal does not receive the SSB during this period. In this case, the first information can be associated with the secondary cell. After step 402, if the terminal receives an SSB from the secondary cell, the first signal no longer needs to be associated with the secondary cell. However, after the base station instructs the secondary cell not to transmit an SSB, the first signal can be associated with the secondary cell again. That is, failure to receive an SSB can be understood as failure to receive an SSB for a period of time. This period can be understood as the period from the time the network device instructs the secondary cell not to transmit an SSB to the time the network device instructs the secondary cell to transmit an SSB. For example, if the network device instructs the secondary cell not to transmit an SSB in time slot i and instructs the secondary cell to transmit an SSB in time slot j, this period is from time slot i to time slot j, which may include time slot i and / or time slot j, or may exclude time slot i and time slot j.

[0121] Optionally, the terminal may receive configuration information from the network device to obtain the secondary cell configured with SSB resources. That is, the configuration information may be used to indicate the SSB resources in at least one secondary cell. In other words, the configuration information may be used to indicate the SSB resources of each secondary cell in at least one secondary cell. The SSB resources here can refer to the relevant description above and are not repeated here.

[0122] 2. The frequency band index of the frequency band where the first secondary cell is located is the minimum frequency band index or the maximum frequency band index among the frequency bands where the N secondary cells are located.

[0123] It should be pointed out that the above-mentioned method 1 or method 2 can be used alone as an implementation method of the first secondary cell. Alternatively, the above-mentioned method 1 and method 2 can be combined to serve as an implementation method of the first secondary cell. For example, there are multiple secondary cells on the frequency band corresponding to the minimum frequency band index, and the first secondary cell is the secondary cell with the smallest or largest cell index among the multiple secondary cells. That is, the secondary cell with the smallest or largest cell index on the minimum frequency band among the frequency bands corresponding to all secondary cells configured with SSB resources. The minimum frequency band refers to the frequency band with the smallest index. Or, there are multiple secondary cells on the frequency band corresponding to the maximum frequency band index, and the first secondary cell is the secondary cell with the smallest or largest cell index among the multiple secondary cells. That is, the secondary cell with the smallest or largest cell index on the maximum frequency band among the frequency bands corresponding to all secondary cells configured with SSB resources. The maximum frequency band refers to the frequency band with the largest index.

[0124] In addition, the above-mentioned method 1 or method 2 is only some examples. The first secondary cell can be any one of the N secondary cells, and this application does not limit it.

[0125] The first signal is used to request the network device to send the first SSB on the first secondary cell. It can be understood that: the first signal can have an association relationship with the first secondary cell, or the first signal can have an association relationship with the first SSB in the first secondary cell. That is, after receiving the first signal, the network device can be informed of the sending of the first SSB on the first secondary cell through the association relationship. Optionally, the association relationship can be predefined or preconfigured, or the association relationship can be indicated to the terminal by the network device.

[0126] Optionally, the first signal can also be used to request the network device to send a second SSB on a second secondary cell, where the second secondary cell is one of the N secondary cells, and the second secondary cell is different from the first secondary cell. That is, the first signal can also be associated with the second secondary cell, or the first signal can also be associated with the second SSB in the second secondary cell. That is, after the network device receives the first signal, it can also learn that the second SSB is sent on the second secondary cell through the association relationship between the first signal and the second secondary cell. In this way, the terminal can also receive the second SSB from the network device on the second secondary cell. That is, it can be understood that the first signal is associated with a secondary cell set, including the first secondary cell and the second secondary cell, etc. This application does not limit the number of secondary cells included in the secondary cell set.

[0127] The second secondary cell may be understood as a predefined or preconfigured cell, or a cell indicated by a network device. Specifically:

[0128] (1) The second secondary cell is the secondary cell with the smallest or largest cell index among the N secondary cells.

[0129] (2) The frequency band index of the frequency band where the second secondary cell is located is the minimum frequency band index or the maximum frequency band index among the frequency bands where the N secondary cells are located.

[0130] It should be pointed out that the above-mentioned method (1) or method (2) can be used alone as an implementation method of the second secondary cell. Alternatively, the above-mentioned method 1 and method 2 can be combined to serve as an implementation method of the second secondary cell. For example, there are multiple secondary cells on the frequency band corresponding to the minimum frequency band index, and the second secondary cell is the secondary cell with the smallest or largest cell index among the multiple secondary cells. That is, the secondary cell with the smallest or largest cell index on the minimum frequency band among the frequency bands corresponding to all secondary cells configured with SSB resources. The minimum frequency band refers to the frequency band with the smallest index. Or, there are multiple secondary cells on the frequency band corresponding to the maximum frequency band index, and the second secondary cell is the secondary cell with the smallest or largest cell index among the multiple secondary cells. That is, the secondary cell with the smallest or largest cell index on the maximum frequency band among the frequency bands corresponding to all secondary cells configured with SSB resources. The maximum frequency band refers to the frequency band with the largest index.

[0131] In addition, the above-mentioned method (1) or method (2) is only some examples. The second secondary cell can be any cell among the N secondary cells that is different from the first secondary cell, and this application does not limit it.

[0132] 402. The network device sends a first SSB to the terminal in the first secondary cell.

[0133] Correspondingly, the terminal receives the first SSB from the network device in the first secondary cell. For example, the terminal receives the first SSB from the network device on the SSB resource in the first secondary cell.

[0134] It can be seen that in the above embodiment, the terminal can request the network device to send the first SSB on the first secondary cell through the first signal, so that the terminal can receive the first SSB on the requested first secondary cell. In this way, the terminal does not need to obtain the first SSB of the first secondary cell through blind detection, which reduces the power consumption of the terminal in detecting the SSB and is also beneficial to energy saving of the network device.

[0135] It is understood that in order to implement the functions in the above embodiments, the network devices and terminals include hardware structures and / or software modules corresponding to the execution of each function. Those skilled in the art should readily appreciate that, in conjunction with the units and method steps of each example described in the embodiments disclosed in this application, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in hardware or in a manner driven by computer software depends on the specific application scenario and design constraints of the technical solution.

[0136] Figures 5 and 6 are schematic diagrams of the structures of possible communication devices provided in embodiments of the present application. These communication devices can be used to implement the functions of the terminal or network device in the above-mentioned method embodiments, thereby also achieving the beneficial effects of the above-mentioned method embodiments. In the embodiments of the present application, the communication device can be the terminal 120 shown in Figure 1, or the RAN node 110 (such as a network device) shown in Figure 1, or a module (such as a chip) applied to a terminal or RAN node (such as a network device).

[0137] As shown in Figure 5, a communication device 500 includes a processing unit 510 and a transceiver unit 520. The communication device 500 is used to implement the functions of the terminal or network device in the method embodiment shown in Figure 3 or Figure 4 above.

[0138] When the communication device 500 is used to implement the functions of the terminal in the method embodiment shown in Figure 3: the transceiver unit 520 is used to receive configuration information from a network device, the configuration information being used to indicate SSB resources in M ​​secondary cells, where M is a positive integer. The transceiver unit 520 is also used to receive instruction information from the network device, the instruction information being used to indicate receiving a first SSB in a first secondary cell, where the first secondary cell is one of the M secondary cells. The transceiver unit 520 is also used to receive the first SSB from the network device on the SSB resources in the first secondary cell.

[0139] In a possible implementation, the transceiver unit 520 is further configured to send a signal to the network device, where the signal is used to request the network device to send an SSB on N secondary cells, where the N secondary cells include the first secondary cell, and N is a positive integer.

[0140] In one possible implementation, the indication information is further used to indicate receiving a second SSB on a second secondary cell, where the second secondary cell is one of the M secondary cells and is different from the first secondary cell. The transceiver unit 520 is further used to receive the second SSB from the network device on the SSB resource in the second secondary cell.

[0141] When the communication device 500 is used to implement the functions of the terminal in the method embodiment shown in FIG4 , the transceiver unit 520 is configured to send a first signal to the network device, the first signal being used to request the network device to send a first SSB on a first secondary cell. The transceiver unit 520 is further configured to receive the first SSB from the network device on the first secondary cell.

[0142] In one possible implementation, the first signal is further used to request the network device to send a second SSB on a second secondary cell, where the second secondary cell is one of the N secondary cells and is different from the first secondary cell. The transceiver unit 520 is further used to receive the second SSB from the network device on the second secondary cell.

[0143] When the communication device 500 is used to implement the functions of the network device in the method embodiment shown in FIG3 , the transceiver unit 520 is configured to send configuration information to the terminal, where the configuration information indicates synchronization signal block (SSB) resources in M ​​secondary cells, where M is a positive integer. The transceiver unit 520 is further configured to send indication information to the terminal, where the indication information indicates receiving a first SSB in a first secondary cell, where the first secondary cell is one of the M secondary cells. The transceiver unit 520 is further configured to send the first SSB to the terminal using the SSB resources in the first secondary cell.

[0144] In a possible implementation, the transceiver unit 520 is further configured to receive a signal from the terminal, where the signal is used to request the network device to send an SSB on N secondary cells, where the N secondary cells include the first secondary cell, and N is a positive integer.

[0145] In one possible implementation, the indication information is further used to indicate receiving a second SSB on a second secondary cell, where the second secondary cell is one of the M secondary cells and is different from the first secondary cell. The transceiver unit 520 is further used to send the second SSB to the terminal on the SSB resource in the second secondary cell.

[0146] When the communication apparatus 500 is used to implement the functions of the network device in the method embodiment shown in FIG4 , the transceiver unit 520 is configured to receive a first signal from a terminal, the first signal being used to request the network device to send a first SSB on a first secondary cell. The transceiver unit 520 is further configured to send the first SSB to the terminal on the first secondary cell.

[0147] In one possible implementation, the first signal is further used to request the network device to send a second SSB on a second secondary cell, where the second secondary cell is one of the N secondary cells and is different from the first secondary cell. The transceiver unit 520 is further used to send the second SSB to the terminal on the second secondary cell.

[0148] For a more detailed description of the processing unit 510 and the transceiver unit 520 , reference may be made to the relevant description in the method embodiment shown in FIG. 3 or FIG. 4 .

[0149] As shown in Figure 6, communication device 600 includes a processor 610 and an interface circuit 620. Processor 610 and interface circuit 620 are coupled to each other. It is understood that interface circuit 620 can be a transceiver or an input / output interface. Optionally, communication device 600 may also include a memory 630 for storing instructions executed by processor 610, input data required by processor 610 to execute instructions, or data generated after processor 610 executes instructions. Sometimes, interface circuit 620 can also be understood as part of processor 610, in which case communication device 600 includes processor 610.

[0150] When the communication device 600 is used to implement the method shown in FIG. 3 or FIG. 4 , the processor 610 is used to implement the functions of the processing unit 510 , and the interface circuit 620 is used to implement the functions of the transceiver unit 520 .

[0151] When the above-mentioned communication device is a chip applied to a terminal, the terminal chip implements the functions of the terminal in the above-mentioned method embodiment. When the terminal chip receives information from the base station, it can be understood that the information is first received by other modules in the terminal (such as a radio frequency module or antenna) and then sent to the terminal chip by these modules. When the terminal chip sends information to the base station, it can be understood that the information is first sent to other modules in the terminal (such as a radio frequency module or antenna) and then sent to the base station by these modules.

[0152] When the above-mentioned communication device is a chip applied to a base station, the base station chip implements the functions of the base station in the above-mentioned method embodiment. When the base station chip receives information from the terminal, it can be understood that the information is first received by other modules in the base station (such as a radio frequency module or antenna) and then sent to the base station chip by these modules. When the base station chip sends information to the terminal, it can be understood that the information is sent to other modules in the base station (such as a radio frequency module or antenna) and then sent to the terminal by these modules.

[0153] In this application, when entity A sends information to entity B, it can be done directly from A to B or indirectly through another entity. Similarly, when entity B receives information from entity A, it can be done directly from entity B or indirectly through another entity. Entities A and B herein can be RAN nodes or terminals, or modules within a RAN node or terminal. The sending and receiving of information can be information exchange between a RAN node and a terminal, for example, between a base station and a terminal; the sending and receiving of information can also be information exchange between two RAN nodes, for example, between a CU and a DU; the sending and receiving of information can also be information exchange between different modules within a device, for example, between a terminal chip and other modules in the terminal, or between a base station chip and other modules within the base station.

[0154] It is understood that the processor in the embodiments of the present application may be a central processing unit (CPU), or may be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. The general-purpose processor may be a microprocessor or any conventional processor.

[0155] The method steps in the embodiments of the present application can be implemented in hardware or in software instructions that can be executed by a processor. The software instructions can be composed of corresponding software modules, and the software modules can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, registers, hard disk, mobile hard disk, CD-ROM or any other form of storage medium well known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. The storage medium can also be an integral part of the processor. The processor and storage medium can be located in an ASIC. In addition, the ASIC can be located in a base station or a terminal. The processor and storage medium can also exist in a base station or a terminal as discrete components.

[0156] In the above embodiments, all or part of the embodiments may be implemented using software, hardware, firmware, or any combination thereof. When implemented using software, all or part of the embodiments may be implemented in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are performed in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user device, or other programmable device. The computer program or instructions may be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program or instructions may be transferred from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless means. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center that integrates one or more available media. The available medium may be a magnetic medium, such as a floppy disk, hard disk, or magnetic tape; an optical medium, such as a digital video disk; or a semiconductor medium, such as a solid-state drive. The computer-readable storage medium may be a volatile or nonvolatile storage medium, or may include both volatile and nonvolatile types of storage media.

[0157] In the various embodiments of the present application, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0158] In this application, "at least one" means one or more, and "more" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. In the text description of this application, the character " / " generally indicates that the previous and next associated objects are in an "or" relationship; in the formula of this application, the character " / " indicates that the previous and next associated objects are in a "division" relationship. "Including at least one of A, B and C" can mean: including A; including B; including C; including A and B; including A and C; including B and C; including A, B and C.

[0159] In addition, to facilitate a clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, terms such as "first" and "second" are used to distinguish between network elements and identical or similar items with substantially the same functions. Those skilled in the art will understand that terms such as "first" and "second" do not limit the quantity or execution order, and terms such as "first" and "second" do not necessarily limit differences.

[0160] It is understood that the various numbers used in the embodiments of this application are merely for ease of description and are not intended to limit the scope of the embodiments of this application. The order of the sequence numbers of the above-mentioned processes does not necessarily imply a specific order of execution; the order of execution of the processes should be determined by their functions and inherent logic.

Claims

1. A method for transmitting SSB on a secondary cell, characterized in that: include: Receiving configuration information from a network device, where the configuration information is used to indicate synchronization signal block (SSB) resources in M ​​secondary cells, where M is a positive integer; receiving indication information from the network device, where the indication information is used to indicate receiving a first SSB on a first secondary cell, where the first secondary cell is one of the M secondary cells; The first SSB is received from the network device on the SSB resources in the first secondary cell.

2. The method according to claim 1, characterized in that The indication information includes a cell index of the first secondary cell.

3. The method according to claim 1, characterized in that The indication information is a bitmap, and one bit in the bitmap corresponds to the first secondary cell.

4. The method according to any one of claims 1 to 3, characterized in that: The method further comprises: A signal is sent to the network device, where the signal is used to request the network device to send an SSB on N secondary cells, where the N secondary cells include the first secondary cell, and N is a positive integer.

5. The method according to any one of claims 1 to 4, characterized in that: The method further comprises: The indication information is further used to indicate receiving a second SSB on a second secondary cell, where the second secondary cell is one of the M secondary cells, and the second secondary cell is different from the first secondary cell; Receive the second SSB from the network device on the SSB resources in the second secondary cell.

6. A method for transmitting SSB on a secondary cell, characterized in that: include: Sending configuration information to the terminal, where the configuration information is used to indicate synchronization signal block SSB resources in M ​​secondary cells, where M is a positive integer; Sending indication information to the terminal, where the indication information is used to indicate receiving a first SSB on a first secondary cell, where the first secondary cell is one of the M secondary cells; The first SSB is sent to the terminal on the SSB resources in the first secondary cell.

7. The method according to claim 6, characterized in that The indication information includes a cell index of the first secondary cell.

8. The method according to claim 6, characterized in that The indication information is a bitmap, and one bit in the bitmap corresponds to the first secondary cell.

9. The method according to any one of claims 6 to 8, characterized in that: The method further comprises: A signal is received from the terminal, where the signal is used to request the network device to send an SSB on N secondary cells, where the N secondary cells include the first secondary cell, and N is a positive integer.

10. The method according to any one of claims 6 to 9, characterized in that: The method further comprises: The indication information is further used to indicate receiving a second SSB on a second secondary cell, where the second secondary cell is one of the M secondary cells, and the second secondary cell is different from the first secondary cell; The second SSB is sent to the terminal on the SSB resources in the second secondary cell.

11. A communication device, characterized in that: The method comprises a unit or a module for implementing the method according to any one of claims 1 to 10.

12. A communication device, characterized in that: The communication device comprises at least one processor; wherein the at least one processor is configured to execute the method according to any one of claims 1 to 10.

13. A communication system, characterized in that: The communication system includes terminal equipment and network equipment; The terminal device is used to perform the method according to any one of claims 1 to 5; The network device is used to execute the method according to any one of claims 6 to 10.

14. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, which, when executed, cause the computer to perform the method according to any one of claims 1 to 10.

15. A computer program product, characterized in that The computer program product comprises: a computer program code, and when the computer program code is executed by a computer, the computer is caused to perform the method according to any one of claims 1 to 10.

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