Method and apparatus for transmitting synchronization signal blocks

Abstract

The present application provides a method and apparatus for transmitting synchronization signal blocks, helping to reduce time-frequency resource conflicts between multiple types of SSB bursts. The method comprises: when a first SSB burst in a first type of SSB bursts overlaps a second SSB burst in a second type of SSB bursts in terms of time-frequency resources, a network device transmits the first SSB burst on a time-domain resource for the first SSB burst, and transmits the second SSB burst on an adjusted time-domain resource for the second SSB burst. The transmission start time point of the second SSB burst is later than the transmission completion time point of the first SSB burst, and the priority of the first type of SSB bursts is higher than that of the second type of SSB bursts.

Description

Method and apparatus for transmitting synchronization signal block

[0001] The present application claims priority to a Chinese patent application No. 202410567835.9, filed on May 08, 2024, entitled "Method and apparatus for transmitting synchronization signal block", and a Chinese patent application No. 202411403254.8, filed on September 30, 2024, entitled "Method and apparatus for transmitting synchronization signal block", the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0002] Embodiments of the present application relate to the field of wireless communication, and in particular to a method and apparatus for transmitting synchronization signal block. BACKGROUND

[0003] In a carrier aggregation (CA) scenario, an access network device can transmit different kinds of synchronization signal block (SSB) bursts to a terminal according to different requirements of the terminal or different requirements of the network side, to meet these different requirements. For example, one kind of SSB burst can be configured for initial access of an idle state terminal or neighbor cell measurement of other terminals that have accessed other serving cells, and another kind of SSB burst can be configured for services with higher latency requirements such as activation of a terminal secondary cell. SUMMARY

[0004] Embodiments of the present application provide a method and apparatus for transmitting synchronization signal block, which can reduce resource waste and reduce conflicts between multiple SSB bursts.

[0005] In a first aspect, a method for transmitting synchronization signal block is provided, which can be executed by a network device or a module (such as a chip) configured to (or for) the network device. Hereinafter, the method executed by the network device is taken as an example for description.

[0006] The method comprises: in a case where a first synchronization signal block (SSB) in a first kind of SSB burst and a second SSB in a second kind of SSB burst exist in time-frequency resource overlap, transmitting the first SSB on time domain resource of the first SSB, and transmitting the second SSB on adjusted time domain resource of the second SSB. Wherein, a transmission starting moment of the second SSB is later than a transmission completion moment of the first SSB, and a priority of the first kind of SSB burst is higher than that of the second kind of SSB burst.

[0007] According to the scheme, if the network device transmits at least two types of SSB bursts, there can be first SSB bursts and second SSB bursts that overlap in time-frequency resources in the at least two types of SSB bursts. In this case, the network device can adjust the time domain resources of the second SSB bursts in the second type of SSB bursts with lower priority, so as to transmit the SSB bursts in the second type of SSB bursts after the first SSB bursts are transmitted, thereby reducing the problem of conflict between multiple SSB bursts.

[0008] In combination with the first aspect, in some implementations of the first aspect, the adjusted time domain resources are related to first transmission parameters of the first type of SSB bursts and second transmission parameters of the second type of SSB bursts. The first transmission parameters include a transmission period of the first type of SSB bursts, and the second transmission parameters include a transmission period of the second type of SSB bursts.

[0009] According to the scheme, optionally, the network device can transmit configuration information indicating the first transmission parameters and / or the second transmission parameters to the terminal, so as to adjust the time domain resources for transmitting the second SSB bursts according to the first transmission parameters and / or the second transmission parameters. Alternatively, the first transmission parameters and / or the second transmission parameters can be predefined by a protocol.

[0010] In a possible implementation, the network device can transmit first indication information to the terminal, the first indication information being used to indicate that the second type of SSB bursts starts to be transmitted. In this implementation, the adjusted time domain resources are related to the first transmission parameters of the first type of SSB bursts, the second transmission parameters of the second type of SSB bursts, a transmission start time of a first SSB burst in the second type of SSB bursts, and a reception time of the first indication information.

[0011] In any of the above schemes or implementations, if the second SSB burst is not the last SSB burst in the second type of SSB bursts, the above scheme further includes that the network device transmits third SSB bursts after the second SSB burst in the second type of SSB bursts, a time interval between the third SSB bursts, and a time interval between a first third SSB burst and the second SSB burst is equal to a time interval corresponding to a transmission period of the second type of SSB bursts, the time interval being an interval between transmission start times of adjacent SSB bursts.

[0012] Alternatively, the above scheme further includes that the network device transmits third SSB bursts after the second SSB burst in the second type of SSB bursts, and time domain resources used for transmitting the third SSB bursts are the same as time domain resources of corresponding SSB bursts in the second type of SSB bursts before the adjustment.

[0013] Optionally, the first type of SSB burst is a continuously transmitted SSB burst or an on-demand transmitted SSB burst, and the second type of SSB burst is an on-demand transmitted SSB burst.

[0014] In this scheme, the network device does not need to continuously transmit SSB bursts when there is no demand on the network side or the terminal side, thereby reducing the energy consumption of the network device. At the same time, for the on-demand transmitted SSB burst and the existing SSB burst, by adjusting the second SSB burst in the second type of SSB burst with a lower priority to be transmitted after the first SSB burst is transmitted, the problem of conflict between multiple SSB bursts is reduced.

[0015] In a second aspect, a method for transmitting a synchronization signal block is provided, which can be executed by a network device or a module (such as a chip) configured to or for the network device.

[0016] The method comprises: in a case where a first SSB burst in a first type of SSB burst and a second SSB burst in a second type of SSB burst exist in time-frequency resource overlap, transmitting the first SSB burst on the time domain resource of the first SSB burst and discarding the second SSB burst; the priority of the first type of SSB burst is higher than that of the second type of SSB burst.

[0017] According to the above scheme, if the network device transmits at least two types of SSB bursts, there can be a first SSB burst and a second SSB burst in time-frequency resource overlap in the at least two types of SSB bursts. In this case, the network device can discard the second SSB burst in the second type of SSB burst with a lower priority to continue transmitting the subsequent second type of SSB burst after completing the transmission of the first SSB burst. By discarding the second SSB burst, the process and steps of adjusting the time domain resource occupied by the second type of SSB burst are simplified, thereby improving the efficiency of reducing the conflict problem of multiple SSB bursts.

[0018] In a third aspect, a method for receiving a synchronization signal block is provided, which can be executed by a terminal or a module (such as a chip) configured to or for the terminal. Hereinafter, the terminal executing the method is taken as an example for description.

[0019] The method comprises: in a case where a first SSB burst in a first type of SSB burst and a second SSB burst in a second type of SSB burst exist in time-frequency resource overlap, receiving the first SSB burst on the time domain resource of the first SSB burst and receiving the second SSB burst on the adjusted time domain resource of the second SSB burst. Wherein, the reception start time of the second SSB burst is later than the reception completion time of the first SSB burst, and the priority of the first type of SSB burst is higher than that of the second type of SSB burst.

[0020] According to the above scheme, if the terminal needs to receive at least two types of SSB bursts, there can be first SSB bursts and second SSB bursts that overlap in time-frequency resources in the at least two types of SSB bursts. In this case, the terminal can adjust the time domain resources used in the second SSB bursts of the second type of SSB bursts with lower reception priority, so as to receive the SSB bursts in the second type of SSB bursts after completing the reception of the first SSB bursts, thereby reducing the problem of multiple SSB bursts existing in conflict.

[0021] In combination with the third aspect, in some implementations of the third aspect, the adjusted time domain resources are related to a first transmission parameter of the first type of SSB bursts and a second transmission parameter of the second type of SSB bursts. The first transmission parameter includes a transmission period of the first type of SSB bursts, and the second transmission parameter includes a transmission period of the second type of SSB bursts.

[0022] According to the above scheme, optionally, the terminal can receive configuration information sent by the network device to indicate the first transmission parameter and / or the second transmission parameter, so as to adjust the time domain resources for receiving the second SSB bursts according to the first transmission parameter and / or the second transmission parameter. Alternatively, the first transmission parameter and / or the second transmission parameter can be pre-defined by a protocol.

[0023] In a possible implementation, the terminal can receive first indication information sent by the network device, the first indication information being used to indicate the start of transmission of the second type of SSB bursts. In this implementation, the adjusted time domain resources are related to the first transmission parameter of the first type of SSB bursts, the second transmission parameter of the second type of SSB bursts, the start time of transmission of the first SSB burst in the second type of SSB bursts, and the reception time of the first indication information.

[0024] In any of the above schemes or implementations, if the second SSB burst is not the last SSB burst in the second type of SSB bursts, the above scheme further includes that the terminal receives a third SSB burst after the second SSB burst in the second type of SSB bursts, a time interval between the third SSB bursts, and a time interval between the first third SSB burst and the second SSB burst is equal to a time interval corresponding to the transmission period of the second type of SSB bursts, the time interval being an interval between the start times of transmission of adjacent SSB bursts.

[0025] Alternatively, the above scheme further includes that the terminal receives a third SSB burst after the second SSB burst in the second type of SSB bursts, and the time domain resources used for receiving the third SSB burst are the same as the time domain resources of the corresponding SSB bursts in the second type of SSB bursts before the adjustment.

[0026] Optionally, the first type of SSB burst is a continuously transmitted SSB burst or an on-demand transmitted SSB burst, and the second type of SSB burst is an on-demand transmitted SSB burst.

[0027] In a fourth aspect, a method for receiving a synchronization signal block is provided. The method can be performed by a terminal or a module (e.g., a chip) configured to (or for) the terminal. The following describes the method performed by the terminal.

[0028] The method includes: receiving, by the terminal, a first synchronization signal block (SSB) burst in a first SSB burst of a first type of SSB burst and a second SSB burst of a second type of SSB burst, when the first SSB burst and the second SSB burst have time-frequency resource overlap, and giving up receiving the second SSB burst, the first type of SSB burst having a higher priority than the second type of SSB burst.

[0029] According to the above scheme, if the terminal receives at least two types of SSB bursts, there can be a first SSB burst and a second SSB burst with time-frequency resource overlap in the at least two types of SSB bursts. In this case, the terminal can give up receiving the second SSB burst in the second type of SSB burst with a lower priority, so as to continue receiving subsequent second type of SSB bursts after completing transmission of the first SSB burst. By giving up receiving the second SSB burst, the process and steps of adjusting the time domain resource used to receive the second type of SSB burst are simplified, thereby improving the efficiency of reducing the conflict problem of multiple SSB bursts.

[0030] In a fifth aspect, a communication apparatus is provided, which includes: means for performing the method in any possible implementation manner of the above described aspects. Specifically, the apparatus includes means for performing the method in any possible implementation manner of the above described aspects.

[0031] In one design, the apparatus can include a module corresponding to each of the above described methods / operations / steps / actions. The module can be a hardware circuit, a software, or a combination of hardware circuit and software.

[0032] In another design, the apparatus is a communication chip, which can include an input circuit or interface for transmitting information or data, and an output circuit or interface for receiving information or data.

[0033] In another design, the apparatus is a network device or a terminal, which can include a transmitter for transmitting information or data, and a receiver for receiving information or data.

[0034] In another design, the apparatus is configured to perform the method in any possible implementation manner of the above described aspects, and the apparatus can be configured in a network device or a terminal.

[0035] In a sixth aspect, a communication apparatus is provided, which comprises at least one processor configured to invoke and run a computer program from a memory, so that the apparatus performs the method in any possible implementation manner of any of the aspects above.

[0036] Optionally, the apparatus further comprises a memory configured to store instructions and data. The memory is coupled to the processor, and the processor implements the method described in the aspects above when executing the instructions stored in the memory.

[0037] Optionally, the apparatus further comprises a transmitter and a receiver, which can be separate or integrated together as a transceiver.

[0038] In a seventh aspect, a computer program product is provided, which comprises a computer program (also referred to as code or instructions), which when executed by a computer, causes the computer to perform the method in any possible implementation manner of any of the aspects above.

[0039] In an eighth aspect, a computer-readable storage medium is provided, which stores a computer program (also referred to as code or instructions), which when executed on a computer, causes the computer to perform the method in any possible implementation manner of any of the aspects above.

[0040] In a ninth aspect, the present application provides a chip system, which comprises at least one processor configured to support the functions involved in any possible implementation manner of any of the aspects above, for example, receiving or processing the data involved in the methods above.

[0041] In a possible design, the chip system further comprises a memory configured to save program instructions and data, which is located in or out of the processor.

[0042] Optionally, the chip system can be composed of a chip, or contain a chip and other discrete devices. BRIEF DESCRIPTION OF DRAWINGS

[0043] FIG. 1 is a schematic diagram of an architecture of a communication system to which embodiments of the present application are applied;

[0044] FIG. 2 is a schematic diagram of a carrier aggregation scenario;

[0045] FIG. 3 is a schematic diagram of configuring a secondary cell;

[0046] FIG. 4 is a schematic diagram of a time-frequency structure of an SSB;

[0047] FIG. 5 is a schematic diagram of beam sweeping of an SSB;

[0048] FIG. 6 is a schematic diagram of a transmission period of an SSB burst;

[0049] FIG. 7 is a schematic diagram of a scenario of hybrid transmission of an SSB burst;

[0050] FIG. 8 is a schematic diagram of a scenario of collision of SSB bursts;

[0051] FIG. 9 is a schematic diagram of a method for transmitting an SSB according to an embodiment of the present application;

[0052] FIG. 10 is a schematic diagram of another method for transmitting an SSB according to an embodiment of the present application;

[0053] FIG. 11 is a schematic diagram of a scenario of adjusting time domain resources according to an embodiment of the present application;

[0054] FIG. 12 is a schematic diagram of another scenario of adjusting time domain resources according to an embodiment of the present application;

[0055] FIG. 13 and FIG. 14 are schematic block diagrams of a communication apparatus according to embodiments of the present application. DETAILED DESCRIPTION

[0056] FIG. 1 is a schematic diagram of an architecture of a communication system to which embodiments of the present application are applied. The communication system 1000 shown in FIG. 1 includes a radio access network (RAN) 100 and a core network 200. Optionally, the communication system 1000 also includes an Internet 300. The radio access network 100 can include at least one access network device (e.g., 110a and 110b in FIG. 1) and at least one terminal (e.g., 120a-120j in FIG. 1). The terminal is connected to the access network device in a wireless manner, and the access network device is connected to the core network 200 in a wireless or wired manner. The core network device and the access network device can be independent and different physical devices, or can be integrated into the same physical device with the functions of the core network device and the logical functions of the access network device, or can be a physical device integrated with part of the functions of the core network device and part of the functions of the access network device. The terminals and the terminals, and the access network devices and the access network devices can be connected to each other in a wired or wireless manner. FIG. 1 is only a schematic diagram, and the communication system can also include other access network devices, such as wireless relay devices and wireless backhaul devices, which are not shown in FIG. 1.

[0057] The radio access network 100 can be a 3rd generation partnership project (3GPP) related cellular system, for example, a 4th generation mobile communication technology (4G) system (also referred to as a long term evolution (LTE) system), a 5th generation mobile communication technology (5G) system (also referred to as a new radio (NR) system), or can also be applied to a next generation mobile communication system or other similar communication system (for example, a 6th generation mobile communication technology (6G) system), and the like, without limitation. The radio access network 100 can also be an open radio access network (open RAN, O-RAN or ORAN), a cloud radio access network (CRAN). The radio access network 100 can also be a non-terrestrial network (NTN), a satellite communication network, a high altitude platform station (HAPS) communication network, an integrated access and backhaul (IAB) communication network, a reconfigurable intelligent surface (RIS) communication network, and the like. The radio access network 100 can also be a communication system in which two or more of the above systems are fused.

[0058] The access network device is a node in the radio access network, and can also be referred to as a RAN node, and can also be referred to as a RAN device. The access network device is used to help the terminal to realize wireless access. The plurality of access network devices in the communication system 1000 can be nodes of the same type or nodes of different types.

[0059] In a possible scenario, the access network device can be a base station, an evolved NodeB (eNodeB), a transmitting and receiving point (TRP), a transmitting point (TP), a next generation NodeB (gNB), a next generation base station in a 6G mobile communication system, a base station in a future mobile communication system, an access point (AP) in a satellite, an integrated access backhaul (IAB) node, an access network device in a mobile switching center non-terrestrial network (NTN) communication system, i.e., can be deployed in a high-altitude platform or a satellite, etc. The access network device can be a macro base station (e.g., 110a in FIG. 1), a micro base station or an indoor station (e.g., 110b in FIG. 1), a relay node or a donor node, or a wireless controller in a CRAN scenario. The access network device can also be a device assuming a base station function in device-to-device (D2D) communication, vehicle-to-everything (V2X) communication, unmanned aircraft communication, or machine communication. Alternatively, the access network device can also be a server, a wearable device, a vehicle or a vehicle-mounted device, etc. For example, the access network device in V2X technology can be a road side unit (RSU).

[0060] In another possible scenario, multiple access network devices cooperate to assist a terminal to implement wireless access, and different access network devices respectively implement part of the functions of a base station. For example, the access network device can be a central unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU), etc. The CU and the DU can be separately configured, or can be included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or a radio frequency unit, such as a remote radio unit (RRU), an active antenna processing unit (AAU), or a remote radio head (RRH). It can be understood that the access network device can be a CU node, or a DU node, or a device including a CU node and a DU node. In addition, the CU can be divided into an access network device in a radio access network (RAN), or the CU can be divided into an access network device in a core network, which is not limited here.

[0061] In different systems, the CU (or CU-CP and CU-UP), DU or RU can also have different names, but those skilled in the art can understand their meanings. For example, in an O-RAN system, the CU can also be referred to as an O-CU (open CU), the DU can also be referred to as an O-DU, the CU-CP can also be referred to as an O-CU-CP, the CU-UP can also be referred to as an O-CU-UP, and the RU can also be referred to as an O-RU. For the convenience of description, the CU, CU-CP, CU-UP, DU and RU are taken as examples for description in this application. Any one of the CU (or CU-CP, CU-UP), DU and RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0062] A terminal is a device with wireless transceiving function, which can send signals to an access network device or receive signals from the access network device. The terminal can also be referred to as a terminal device, a terminal, user equipment (UE), a mobile station, a mobile terminal, etc. The terminal can be widely applied to various scenarios, such as D2D, V2X communication, machine-type communication (MTC), internet of things (IOT), virtual reality, augmented reality, industrial control, autonomous driving, remote medical treatment, smart power grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. The terminal can specifically be a mobile phone, a tablet computer, a computer with wireless transceiving function, a wearable device, a vehicle, an airplane, a ship, a robot, a mechanical arm, a smart home device, etc. The embodiments of this application do not limit the specific technology and specific device form adopted by the terminal.

[0063] The access network device and the terminal can be fixed in position or movable. The access network device and the terminal can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on the water surface; can also be deployed on an airplane, a balloon and a man-made satellite. The embodiments of this application do not limit the application scenarios of the access network device and the terminal.

[0064] The roles of the access network device and the terminal can be relative. For example, the helicopter or the drone 120i in FIG. 1 can be configured as a mobile access network device, and for the terminal 120j that accesses the wireless access network 100 through 120i, 120i is an access network device; but for the access network device 110a, 120i is a terminal, that is, 110a communicates with 120i through a wireless air interface protocol. Of course, 110a and 120i can also communicate through an interface protocol between access network devices, and in this case, 120i is also an access network device relative to 110a. Therefore, the access network device and the terminal can be collectively referred to as a communication apparatus, 110a and 110b in FIG. 1 can be referred to as a communication apparatus with an access network device function, and 120a-120j in FIG. 1 can be referred to as a communication apparatus with a terminal function.

[0065] The access network device and the terminal, the access network device and the access network device, and the terminal and the terminal can communicate through a licensed spectrum, can communicate through an unlicensed spectrum, or can communicate through both the licensed spectrum and the unlicensed spectrum; can communicate through a spectrum below 6 gigahertz (GHz), can communicate through a spectrum above 6 GHz, or can communicate through both the spectrum below 6 GHz and the spectrum above 6 GHz. Embodiments of the present application do not limit the spectrum resources used for wireless communication.

[0066] In embodiments of the present application, the functions of the access network device can also be performed by a module (such as a chip) in the access network device, or by a control subsystem containing an access network device function. The control subsystem containing an access network device function herein can be a control center in the above-mentioned application scenarios such as smart grid, industrial control, intelligent transportation, and smart city. The functions of the terminal can also be performed by a module (such as a chip or a modem) in the terminal, or by a device containing a terminal function.

[0067] In the present application, the access network device sends a downlink signal or downlink information to the terminal, and the downlink signal or downlink information is carried on a downlink channel; the terminal sends an uplink signal or uplink information to the access network device, and the uplink signal or uplink information is carried on an uplink channel. In order to communicate with the access network device, the terminal needs to establish a wireless connection on a cell controlled by the access network device. The cell that establishes a wireless connection with the terminal is called a service cell of the terminal. When the terminal communicates with the service cell, it can also be interfered by signals from a neighbor cell.

[0068] In this application, a time domain symbol can be an orthogonal frequency division multiplexing (OFDM) symbol or a discrete fourier transform-spread-OFDM (DFT-s-OFDM) symbol. If not specified, the symbol in the embodiments of this application refers to a time domain symbol.

[0069] It can be understood that, in the embodiments of this application, the physical downlink shared channel (PDSCH) and the physical downlink control channel (PDCCH) are only examples of the downlink data channel and the downlink control channel, respectively. In different systems and different scenarios, the data channel and the control channel can have different names, and the embodiments of this application do not limit this.

[0070] The related technologies and concepts involved in this application are introduced below.

[0071] 1. Carrier aggregation

[0072] The carrier aggregation technology in the NR system can realize multi-frequency resource integration, aggregate spectrum resources of the same frequency band or different frequency bands for the terminal to use, thereby improving the overall network resource utilization, increasing the transmission bandwidth of a single user, and improving the user experience.

[0073] FIG. 2 is a schematic diagram of a carrier aggregation scenario. The carrier aggregation technology can aggregate multiple component carriers (CCs) together to support a larger transmission bandwidth. The multiple component carriers can include a primary component carrier (PCC) corresponding to a primary cell and a secondary component carrier (SCC) corresponding to a secondary cell. For example, the PCC (corresponding to cell 1, cell 1 is a primary cell, and the frequency is F1), the SCC 1 (corresponding to cell 2, cell 2 is a secondary cell, and the frequency is F2), and the SCC 2 (corresponding to cell 3, cell 3 is a secondary cell, and the frequency is F3) in FIG. 2.

[0074] FIG. 3 is a schematic diagram of configuring a secondary cell. Referring to time 1 in FIG. 3, a terminal establishes a radio resource control (RRC) connection with a cell 1, and the cell 1 is a primary cell of the terminal. The primary cell is a cell where the terminal performs initial connection establishment, or a cell where the terminal performs RRC connection reestablishment, or a cell specified in a handover process of the terminal. The primary cell is responsible for RRC communication with the terminal.

[0075] A secondary cell is a cell added in RRC reconfiguration, and is used to provide additional radio resources. Referring to time 2 in FIG. 3, the terminal configures a cell 2 as a secondary cell. There is no RRC communication between the secondary cell and the terminal, and control information is forwarded between the secondary cell and the terminal through the primary cell. The successfully configured secondary cell is in a deactivated state, and the terminal cannot perform data transmission through the secondary cell at this time.

[0076] Referring to time 3 in FIG. 3, when a certain condition is met, the terminal activates the secondary cell, and the secondary cell switches from the deactivated state to the activated state. The terminal can perform data transmission with the secondary cell. The certain condition is met, for example, when the terminal has more than a proportion threshold of data to be transmitted, and the proportion threshold is, for example, 50%. At a certain time in the above process, the terminal needs to use the SSB sent by the access network device in the secondary cell to complete cell search, measurement, synchronization and the like.

[0077] The primary cell and the secondary cell are user-level concepts. The primary cell of one terminal can be the primary cell or the secondary cell of another terminal, and the secondary cell of one terminal can be the primary cell or the secondary cell of another terminal.

[0078] 2, Layer 1 (L1) control signaling and layer 2 (L2) control signaling

[0079] In the NR system, the physical (PHY) layer is usually referred to as L1, and the medium access control (MAC) layer, the radio link control (RLC) layer, and the packet data convergence protocol (PDCP) layer are referred to as L2.

[0080] The L1 control signaling is, for example, downlink control information (DCI) sent by the access network device to the terminal to support uplink and downlink data transmission. The DCI includes three types of information: downlink authorization, uplink authorization, and power control command. The DCI is carried on the PDCCH.

[0081] The size of DCI payload can be different in different scenarios, which can lead to different DCI formats. Currently defined DCI formats include but are not limited to: DCI format 0_X (X can be 0, 1, 2, 3, used for uplink scheduling), DCI format 1_X (X can be 0, 1, 2, 3, used for downlink scheduling), DCI format 2_X (X can be 0, 1, 2, 3, …, 9, used for other specific scenarios), DCI format 3_X (X can be 0, 1, 2, used for sidelink scheduling), DCI format 4_X (X can be 0, 1, 2, used for multicast broadcast service (MBS) scheduling. The information that can be carried by DCI is comprehensive and complex, including the control information indicated by the network side necessary for the normal communication between the terminal and the network.

[0082] The control signaling of L2 is, for example, a MAC control element (CE), which is a special structure at the MAC layer, carried on the PDSCH, and can be used for activating secondary cells and other functions.

[0083] 3、SSB

[0084] The SSB includes a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH). When the terminal moves in the system, it will continuously perform cell search and measurement based on the SSB, select a suitable SSB beam, and realize initial access and mobility management of the terminal.

[0085] FIG. 4 is a schematic diagram of time-frequency resources occupied by an SSB. As shown in FIG. 4, each SSB occupies 4 consecutive symbols in the time domain and 20 resource blocks (RBs) in the frequency domain, i.e., 240 subcarriers. Among them, the PSS and the SSS occupy the first symbol and the third symbol in the SSB, respectively, and together occupy 127 subcarriers in the frequency domain. The PBCH (including the demodulation reference signal (DMRS)) occupies the second symbol and the fourth symbol in the entire SSB, and additionally occupies 48 subcarriers at both ends of the third symbol.

[0086] FIG. 5 is a schematic diagram of beam sweeping of an SSB. As shown in FIG. 5, in NR, SSB is transmitted in the form of beam sweeping, i.e., the access network device can transmit one beam direction at a time, and cover the required directions of the entire cell by transmitting different beams at different times. Assuming that N SSBs are transmitted in different directions in one round of beam sweeping, the entire SSBs transmitted in this round are referred to as an SSB burst. The value of N is, for example, 64. It can also be described as a set of all synchronization signal / physical broadcast channel blocks (SS / PBCH blocks) in one round of beam sweeping is referred to as an SSB burst.

[0087] FIG. 6 is a schematic diagram of a transmission period of an SSB burst. As shown in FIG. 6, the terminal, when initially accessing, defaults to a transmission period of 20 ms for the SSB burst, and the transmission window of the SSB burst is in units of half-frames (5 ms in length), i.e., within the 20 ms period, the SSB burst is always limited to a time interval of 5 ms (half-frame in length), and the remaining 15 ms is not transmitted.

[0088] In one example, the access network device can indicate the period of the SSB burst through a field named “ssb-PeriodicityServingCell” in an information unit named “ServingCellConfigCommon” in the RRC configuration, which has eight possible values: {ms5, ms10, ms20, ms40, ms80, ms160, spare2, spare1}, corresponding to the periods of the SSB burst: 5 ms, 10 ms, 20 ms, 40 ms, 80 ms, or 160 ms. When the access network device adjusts the period of the SSB burst of the secondary cell, the access network device can indicate the terminal to acquire the adjusted period of the SSB burst through an RRC reconfiguration message.

[0089] Currently, the network device (i.e., the aforementioned access network device) mainly transmits the SSB burst continuously through the transmission period shown in the aforementioned FIG. 6 to achieve the initial access and mobility management of the terminal. However, even when there is no SSB demand on the network side or the user side, the network device will still transmit the SSB burst continuously through the above transmission period, resulting in unnecessary network device energy consumption overhead.

[0090] To reduce unnecessary network device energy consumption overhead, the network device can send one or more SSB bursts on its serving cell in an on-demand manner. When there is no demand from the network side or the user side, the network device does not send the on-demand SSB. When there is demand from the network side or the user side, the network device sends the on-demand SSB burst until the demand is completed or other trigger conditions are met. Optionally, when the network device sends the on-demand SSB burst, in order to ensure that the cell can be used for serving cell search and initial access of the idle state terminal, the network device can also continuously send at least one SSB burst on the serving cell with a longer period, for example, by sending the continuously sent SSB burst in the transmission period shown in the foregoing FIG. 6.

[0091] FIG. 7 is a schematic diagram of a scenario provided by the present application for hybrid sending of SSB bursts. As shown in FIG. 7, the network device configures two SSB bursts on the serving cell through RRC. Among them, SSB1 burst is continuously sent, and its period is 160 ms, which is used for initial access of the idle state terminal or neighbor cell measurement of other terminals that have accessed other serving cells. SSB2 burst is on-demand sent, and its period is 5 ms, which can be used for secondary cell activation and other services with higher delay requirements. When there is a service demand that requires the use of SSB2 burst, the network device can start the transmission of SSB2 burst according to the demand, and stop the transmission of SSB2 burst when the demand is completed or other trigger conditions are met.

[0092] However, the configuration of the frequency domain resources of the above-mentioned multiple SSB bursts may have a conflict situation under certain conditions. For example, taking the network device sending the two SSB bursts SSB1 burst and SSB2 burst in the foregoing FIG. 7 as an example, in the case of conflict, the frequency resources occupied by the SSB in SSB1 burst and the frequency resources occupied by the SSB in SSB2 burst at least coincide with each other for 1 RB. When multiple SSB bursts exist in conflict, the terminal will simultaneously receive the multiple SSB bursts in conflict, resulting in two different interpretation methods of the terminal on the time-frequency resources (i.e., it can be interpreted as the SSB in SSB1 burst, or it can be interpreted as the SSB in SSB2 burst).

[0093] For example, continuing with the network device sending the two SSB bursts of SSB1 burst and SSB2 burst in FIG. 7, FIG. 8 is a schematic diagram of a scenario of SSB burst collision provided by the present application. As shown in FIG. 8, there is a SSB (i.e., the second SSB#1 in FIG. 8) in the first type of SSB burst (i.e., SSB#1) that collides with a SSB in the second type of SSB burst (i.e., SSB#2) (i.e., the second SSB#1 collides with the first SSB#2, the third SSB#1, and the second SSB#2 in FIG. 8). The frequency domain resources occupied by the SSBs that collide at least coincide on one subcarrier, and the time domain resources at least coincide on one symbol. At the time of collision, the terminal will simultaneously receive the first type of SSB burst and the second type of SSB burst, causing the terminal to have two different interpretations of the time-frequency resources.

[0094] Therefore, embodiments of the present application provide a transmission method of synchronization signal blocks, in which, in the method, the network device and the terminal can adjust the time domain resources of the SSB burst with lower priority when multiple SSB bursts coincide in time-frequency resources, so that the time domain resources occupied by the SSB burst with lower priority do not coincide with the time domain resources occupied by the SSB burst with higher priority, thereby reducing the ambiguity of the terminal receiving the SSB.

[0095] The technical solutions of the embodiments of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail below through specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes can not be described again in some embodiments. The embodiments of the present application will be described below with reference to the drawings. The transmission method of synchronization signal blocks provided by the embodiments of the present application can be applied to the communication system shown in FIG. 1, and the method can be executed by the network device and the terminal. The network device can be, for example, 110a and 110b shown in FIG. 1, and the terminal can be, for example, 120a-120j shown in FIG. 1.

[0096] The network device sends the first SSB burst in the first type of SSB burst on the time domain resources of the first SSB burst, and sends the second SSB burst in the second type of SSB burst on the adjusted time domain resources of the second SSB burst when the first SSB burst and the second SSB burst coincide in time-frequency resources.

[0097] Correspondingly, the terminal receives the first SSB burst in the first type of SSB burst on the time domain resources of the first SSB burst, and receives the second SSB burst in the second type of SSB burst on the adjusted time domain resources of the second SSB burst when the first SSB burst and the second SSB burst coincide in time-frequency resources.

[0098] The sending start moment of the second SSB burst is later than the sending completion moment of the first SSB burst, and the priority of the first type of SSB burst is higher than that of the second type of SSB burst. The network device is the aforementioned access network device. The time-frequency resource overlap of the first SSB burst and the second SSB burst can be complete overlap of the time domain resources occupied by the two, or partial overlap, which is not limited in the present application.

[0099] Optionally, the priority of the two types of SSB bursts can be determined according to the sending time of the first round of SSB bursts in each type of SSB burst, for example, the first type of SSB burst is the one that is sent first, and the other type of SSB burst is the second type of SSB burst (i.e., the access network device sends the first round of the first type of SSB burst first, and then sends the first round of the second type of SSB burst, which can be sent after the first round of the first type of SSB burst, or after other rounds of the first type of SSB burst, which is not limited in the present application). Alternatively, the priority of the two types of SSB bursts can be predefined by a protocol.

[0100] In the case where the first SSB burst in the first type of SSB burst and the second SSB burst in the second type of SSB burst overlap in time-frequency resources, the network device maintains the time domain resources used to send the first SSB burst unchanged, and adjusts the time domain resources for sending the second SSB burst to after the completion of sending the first SSB burst. Correspondingly, the terminal maintains the time domain resources used to receive the first SSB burst unchanged, and receives the second SSB burst on the adjusted time domain resources of the second SSB burst after the completion of receiving the first SSB burst.

[0101] In any one of the implementation manners of the foregoing embodiments, if the second SSB burst is not the last SSB burst in the second type of SSB burst, the network device and the terminal can adjust the time domain resources of the second SSB burst in the following two ways.

[0102] Implementation manner 1: adjusting the time domain resources of the second SSB burst and the third SSB burst after the second SSB burst in the second type of SSB burst.

[0103] The network device sends the third SSB burst after the second SSB burst in the second type of SSB burst after the completion of sending the second SSB burst.

[0104] The time interval between the third SSB bursts and the time interval between the first third SSB burst and the second SSB burst are equal to the time interval corresponding to the transmission period of the second type of SSB burst. The time interval is the interval between the starting time of the transmission of adjacent SSB bursts, for example, the interval between the starting time of the transmission of two adjacent third SSB bursts. Optionally, the time interval can also be the interval between the completion time of the transmission of adjacent SSB bursts, or the interval between the starting time of the transmission of one of the two adjacent SSB bursts and the completion time of the transmission of the other SSB burst, etc. The determination of the time interval depends on the definition of the transmission period of the SSB burst, which is not limited in the present application.

[0105] In this implementation manner 1, since the time domain resource occupied by the second SSB burst needs to be after the time domain resource occupied by the first SSB burst, that is, there is a backward offset of the time domain resource occupied by the second SSB burst in the time domain. When the network device subsequently transmits the third SSB burst, the time domain resource occupied by each third SSB burst is also offset backward in the time domain by the offset of the time domain resource occupied by the second SSB burst, so that the second SSB burst and the first third SSB burst, and the third SSB bursts conform to the transmission period of the second type of SSB burst of the second type of SSB burst. In other words, this implementation manner 1 is equivalent to offsetting the time domain resource occupied by each SSB burst backward in the time domain according to the offset from the second SSB burst in the second type of SSB burst.

[0106] Correspondingly, the terminal adjusts the time domain resource for receiving the second type of SSB burst according to the same rule as the network device.

[0107] Implementation manner 2: Only adjust the time domain resource of the second SSB burst.

[0108] The network device transmits the third SSB burst after the second SSB burst in the second type of SSB burst, and the time domain resource used for transmitting the third SSB burst is the same as the time domain resource of the corresponding SSB burst in the second type of SSB burst before the adjustment.

[0109] In this implementation manner 2, since the time domain resource occupied by the second SSB burst needs to be after the time domain resource occupied by the first SSB burst, that is, there is a backward offset of the time domain resource occupied by the second SSB burst in the time domain. When the network device subsequently transmits the third SSB burst, if the third SSB burst does not conflict with the first type of SSB burst, the network device does not adjust the time domain resource for transmitting the third SSB burst.

[0110] Correspondingly, the terminal adjusts the time domain resource for receiving the second type of SSB burst according to the same rule as the network device.

[0111] Optionally, the first type of SSB burst can be the aforementioned continuously transmitted SSB burst, and the second type of SSB burst can be the aforementioned on-demand transmitted SSB burst. Alternatively, the first type of SSB burst can be the aforementioned on-demand transmitted SSB burst, and the second type of SSB burst can be the aforementioned on-demand transmitted SSB burst.

[0112] The subsequent embodiments are all described by taking the first type of SSB burst as the continuously transmitted SSB burst and the second type of SSB burst as the on-demand transmitted SSB burst. When the first type of SSB burst is the on-demand transmitted SSB burst, the implementation manner can refer to the implementation manner of the first type of SSB burst being the continuously transmitted SSB burst, and the present application does not repeat the description.

[0113] The method for transmitting the synchronization signal block provided by the embodiments of the present application can adjust the time domain resource used by the second SSB burst with a lower transmission priority to the time domain resource used by the first SSB burst when the first SSB burst in the first type of SSB burst and the second SSB burst in the second type of SSB burst exist in the time-frequency resource overlap, and the terminal correspondingly receives the second SSB burst through the adjusted time domain resource of the second SSB burst, so that the time domain resources occupied by the first SSB burst and the second type of SSB burst do not overlap, thereby reducing the ambiguity of the terminal receiving the SSB.

[0114] Next, how the network device adjusts the time domain resource of the second SSB burst and how the terminal adjusts the time domain resource of the second SSB burst will be described in detail.

[0115] Specifically, the factors for adjusting the time domain resource of the second SSB burst are related to the transmission period of the first type of SSB burst, the first transmission window of the first type of SSB burst, the transmission period of the second type of SSB burst, the second transmission window of the second type of SSB burst, and the transmission starting time of the first round of the second type of SSB burst.

[0116] For example, the network device can determine the time domain resource for transmitting the first SSB burst with the conflict according to the transmission period of the first SSB burst of the first type of SSB burst and the first transmission window of the first SSB burst of the first type of SSB burst, and determine the time domain resource for transmitting the second SSB burst with the conflict according to the transmission period of the second SSB burst of the second type of SSB burst, the second transmission window of the second SSB burst of the second type of SSB burst, and the transmission starting time for transmitting the first round of second SSB bursts. The network device adjusts the time domain resource for transmitting the second SSB burst to a time domain resource after the time domain resource for transmitting the first SSB burst. For example, the time for completing the transmission of the first SSB burst can be taken as the time for starting the transmission of the second SSB burst, or any time after the completion of the transmission of the first SSB burst and before the next first SSB burst after the transmission of the first SSB burst can be taken as the time for starting the transmission of the second SSB burst (and the time for completing the transmission of the second SSB burst is earlier than or equal to the time for the next first SSB burst after the transmission of the first SSB burst).

[0117] The transmission period of the first SSB burst of the first type of SSB burst and the first transmission window of the first SSB burst of the first type of SSB burst can be carried in the first transmission parameter of the first SSB burst of the first type of SSB burst, or the first transmission parameter only includes the transmission period of the first SSB burst of the first type of SSB burst, and the first transmission window is pre-defined by the protocol.

[0118] The transmission period of the second SSB burst of the second type of SSB burst and the second transmission window of the second SSB burst of the second type of SSB burst can be carried in the second transmission parameter of the second SSB burst of the second type of SSB burst, or the second transmission parameter only includes the transmission period of the second SSB burst of the second type of SSB burst, and the second transmission window is pre-defined by the protocol. The transmission starting time for transmitting the first round of second SSB bursts is determined according to actual requirements. The actual requirements can be network side requirements or terminal side requirements. For example, the actual requirements can be service requirements of the terminal, the terminal sends a service request for the service requirements to the network device, the network device determines the transmission starting time for transmitting the first round of second SSB bursts according to the service requirements after confirming the requirements, and synchronizes the time to the terminal. Alternatively, the actual requirements can be service requirements determined by the network side, and the network device determines the transmission starting time for transmitting the first round of second SSB bursts according to the service requirements and synchronizes the time to the terminal.

[0119] In the following, taking the first transmission parameter including the sending period of the first type of SSB burst and the second transmission parameter including the sending period of the second type of SSB burst as an example, the transmission parameter can be configuration information for the network device to configure the SSB, for example, the first transmission parameter is the RRC configuration information of the first type of SSB burst, and the second transmission parameter is the RRC configuration information of the second type of SSB burst.

[0120] In a possible implementation, the network device can adjust the time domain resource for sending the second SSB burst according to the first transmission parameter of the first type of SSB burst and the second transmission parameter of the second type of SSB burst. Correspondingly, the terminal can adjust the time domain resource for receiving the second SSB burst according to the first transmission parameter of the first type of SSB burst and the second transmission parameter of the second type of SSB burst.

[0121] In another possible implementation, the network device can adjust the time domain resource for sending the second SSB burst according to the first transmission parameter of the first type of SSB burst and the second transmission parameter of the second type of SSB burst. Correspondingly, the terminal can receive the indication information sent by the network device and determine the adjusted time domain resource used by the second SSB burst.

[0122] In the above two implementations, the network device can determine the time-frequency resource occupied by each first type of SSB burst and the time-frequency resource occupied by each second type of SSB burst according to the first transmission parameter of the first type of SSB burst and the second transmission parameter of the second type of SSB burst. By the time-frequency resource occupied by each first type of SSB burst and the time-frequency resource occupied by each second type of SSB burst, it is predicted that there will be a first SSB burst and a second SSB burst that coincide in time-frequency resource. According to the time domain resource occupied by the first SSB burst, the time domain resource for sending the second SSB burst is re-determined (i.e., the adjusted time domain resource of the second SSB burst mentioned above).

[0123] In the following, taking the network device and the terminal adjusting the time domain resource of the second SSB burst according to the first transmission parameter of the first type of SSB burst and the second transmission parameter of the second type of SSB burst as an example, how to adjust the time domain resource of the second SSB burst is introduced.

[0124] In a possible implementation, the first transmission parameter and the second transmission parameter can be protocol predefined, that is, the network device and the terminal obtain the predefined first transmission parameter and the second transmission parameter according to the protocol.

[0125] In another possible implementation, the first transmission parameter and the second transmission parameter are configured by the network device, and the network device sends the first transmission parameter and the second transmission parameter to the terminal in advance, so that the terminal obtains the first transmission parameter and the second transmission parameter.

[0126] In this implementation, FIG. 9 is a flow diagram of a method for transmitting a synchronization signal block according to an embodiment of the present application. As shown in FIG. 9, the method includes the following steps.

[0127] S901, the network device transmits configuration information to the terminal.

[0128] Correspondingly, the terminal receives the configuration information transmitted by the network device.

[0129] The configuration information is used to indicate the first transmission parameter and / or the second transmission parameter. When the configuration information is used to indicate only the first transmission parameter, the second transmission parameter can be predefined by a protocol. When the configuration information is used to indicate only the second transmission parameter, the first transmission parameter can be predefined by a protocol. Alternatively, the configuration information is used to indicate the first transmission parameter and the second transmission parameter.

[0130] The configuration information can be transmitted by the network device to the terminal when the network device establishes an RRC connection with the terminal, so that the terminal determines the time-frequency resource used for receiving the first type of SSB burst and the time-frequency resource used for receiving the first type of SSB burst according to the configuration information.

[0131] S902, the network device adjusts the time domain resource for transmitting the second SSB burst according to the first transmission parameter of the first type of SSB burst and the second transmission parameter of the second type of SSB burst.

[0132] Correspondingly, the terminal adjusts the time domain resource for receiving the second SSB burst according to the first transmission parameter of the first type of SSB burst and the second transmission parameter of the second type of SSB burst.

[0133] Taking the network device side as an example, the network device obtains the transmission period of the first type of SSB burst from the first transmission parameter, obtains the transmission period of the second type of SSB burst from the second transmission parameter, and adjusts the time domain resource for transmitting the second SSB burst to the time domain resource after the time domain resource for transmitting the first SSB burst, in combination with the first transmission window, the second transmission window predefined by a protocol, and the transmission start time for transmitting the first round of the second type of SSB burst.

[0134] Correspondingly, the terminal obtains the transmission period of the first type of SSB burst from the first transmission parameter, obtains the transmission period of the second type of SSB burst from the second transmission parameter, and adjusts the time domain resource for receiving the second SSB burst in combination with the first transmission window, the second transmission window predefined by a protocol, and the transmission start time for transmitting the first round of the second type of SSB burst. The terminal receives the time domain resource for the second SSB burst, which is the same as the time domain resource for transmitting the second SSB burst adjusted by the network device.

[0135] The method provided in the embodiments of the present application can provide a basis for adjusting the time domain resource of the second SSB burst for the network device and the terminal according to the SSB configuration parameter by pre-sending configuration information indicating the first transmission parameter and / or the second transmission parameter to the terminal to synchronize the SSB configuration parameter of the first type SSB burst and the second type SSB burst with the terminal.

[0136] The following will take the network device indicating the terminal that the second type SSB burst starts to transmit as an example to introduce in detail how to adjust the time domain resource of the second SSB burst. FIG. 10 is a flowchart of another method for transmitting a synchronization signal block provided in the embodiments of the present application. As shown in FIG. 10, the method can include the following steps.

[0137] S1001, the network device sends configuration information to the terminal.

[0138] Correspondingly, the terminal receives the configuration information sent by the network device.

[0139] The step can refer to the foregoing step S901, and details are not described herein again.

[0140] S1002, the network device sends first indication information to the terminal.

[0141] Correspondingly, the terminal receives the first indication information sent by the network device.

[0142] The first indication information is used to indicate that the second type SSB burst starts to transmit. The first indication information can be DCI signaling or MAC CE signaling sent by the network device, which is used to indicate the terminal that the network device is about to start to send the first round of the second type SSB burst at a time.

[0143] S1003, the network device adjusts the time domain resource for sending the second SSB burst according to the first transmission parameter of the first type SSB burst, the second transmission parameter of the second type SSB burst, and the time at which the second type SSB burst starts to transmit.

[0144] Correspondingly, the terminal adjusts the time domain resource for receiving the second SSB burst according to the first transmission parameter of the first type SSB burst, the second transmission parameter of the second type SSB burst, and the first indication information.

[0145] The network device adjusts the time domain resource for sending the second SSB burst according to the first transmission parameter of the first type SSB burst, the second transmission parameter of the second type SSB burst, and the starting time of sending the first SSB burst in the second type SSB burst. Correspondingly, the terminal adjusts the time domain resource for receiving the second SSB burst according to the first transmission parameter of the first type SSB burst, the second transmission parameter of the second type SSB burst, and the starting time of sending the first SSB burst in the second type SSB burst obtained from the first indication information.

[0146] Optionally, the network device can further adjust the time domain resource for transmitting the second SSB burst according to the first transmission parameter of the first type of SSB burst, the second transmission parameter of the second type of SSB burst, the transmission starting moment of the first SSB burst in the second type of SSB burst, and the reception moment of the first indication information. Correspondingly, the terminal adjusts the time domain resource for receiving the second SSB burst according to the first transmission parameter of the first type of SSB burst, the second transmission parameter of the second type of SSB burst, the transmission starting moment of the first SSB burst in the second type of SSB burst obtained from the first indication information, and the reception moment of the first indication information. The specific scheme of this implementation manner can refer to the embodiment shown in FIG. 12.

[0147] The method provided by the embodiment of the present application synchronizes the SSB configuration parameters of the first type of SSB burst and the second type of SSB burst between the network device and the terminal by pre-transmitting the configuration information indicating the first transmission parameter and / or the second transmission parameter to the terminal, and indicates the terminal the time when the second type of SSB burst starts to transmit by transmitting the first indication information to the terminal, thereby providing the adjustment basis for the network device and the terminal to adjust the time domain resource of the second SSB burst according to the SSB configuration parameters.

[0148] For ease of understanding, the following takes an example of only including the first type of SSB burst and the second type of SSB burst, and synchronously adjusting the third SSB burst according to the second SSB burst (the first type of SSB burst is a continuously transmitted burst, and the second type of SSB burst is an on-demand transmitted burst), and illustrates the adjustment manner introduced in the foregoing method embodiment through various different cases.

[0149] For ease of illustration, the transmission period of the first type of SSB burst is defined as P SSB1 , and the transmission period of the second type of SSB burst is defined as P SSB2 . The transmission period can be one of 5 ms, 10 ms, 20 ms, 40 ms, 80 ms, and 160 ms, or a new value representing a time length different from the above six values, and the present application does not limit the value of the transmission period. The first transmission window is defined as T SSB1 , and the second transmission window is defined as T SSB2 . The transmission window can be a window predefined by a protocol. For example, a half frame (5 ms), or a transmission window indicated by the pattern of the actually transmitted SSB burst. For example, when the total subframe length between the subframe where the first SSB in the SSB burst pattern is located and the subframe where the last transmitted SSB is located is 3 subframes, the transmission window can be 3 ms. Wherein, P SSB1 ≥ T SSB1 , and P SSB2 ≥ TSSB2 The sending starting moment of the first SSB burst is defined as T.

[0150] Based on the above definitions, the adjustment manner introduced in the foregoing method embodiment is exemplarily described in the following two cases.

[0151] Case 1: The second SSB burst is the first SSB burst in the second type of SSB burst.

[0152] FIG. 11 is a schematic diagram of a scenario of adjusting time domain resources provided by an embodiment of the present application. As shown in FIG. 11, the second SSB burst is the third round of SSB burst in the second type of SSB burst.

[0153] The sending starting moment of the second round of the second type of SSB burst is T0.

[0154] At the moment T0(T-T0≥T SSB2 ), the network device starts to send the second round of the second type of SSB burst, that is, the sending starting moment of the second round of the second type of SSB burst is T0, and the network device still needs to continue to send the second type of SSB burst until the moment T. At this time, the time domain resources of the third round of the second type of SSB burst coincide with the time domain resources of the first type of SSB burst.

[0155] If (T-T0)-T SSB2 <P SSB2 <(T-T0)+T SSB1 , the network device starts to send the third round of the second type of SSB burst from the moment T+T SSB1 (correspondingly, the terminal starts to receive the third round of the second type of SSB burst from the moment T+T SSB1 , and the sending starting moment of the third round of the second type of SSB burst is T+T SSB1 .

[0156] If the network device still needs to send the fourth round of the second type of SSB burst in the time period from the moment T+T SSB1 to the moment T+T SSB1 +P SSB2 , and P SSB2 ≤P SSB1 -T SSB1 -T SSB2 , the network device sends the fourth round of the second type of SSB burst at the moment T+T SSB1 +P SSB2 . Correspondingly, the terminal receives the fourth round of the second type of SSB burst at the moment T+T SSB1 +P SSB2 .

[0157] In a specific implementation, the network device can start to send the third round of the second-type SSB burst in the next subframe of the subframe in which the terminal is located at time T+T SSB1 In a specific implementation, the network device can start to send the third round of the second-type SSB burst in the next subframe of the subframe in which the terminal is located at time T+T SSB1 In a specific implementation, the network device can start to send the third round of the second-type SSB burst in the next subframe of the subframe in which the terminal is located at time T+T SSB1 In a specific implementation, the network device can start to send the third round of the second-type SSB burst in the next subframe of the subframe in which the terminal is located at time T+T SSB1 +P SSB2 In a specific implementation, the network device can start to send the third round of the second-type SSB burst in the next subframe of the subframe in which the terminal is located at time T+T SSB2 ≤P SSB1 -T SSB1 -T SSB2 In a specific implementation, the network device can start to send the third round of the second-type SSB burst in the next subframe of the subframe in which the terminal is located at time T+T SSB1 +P SSB2 In a specific implementation, the network device can start to send the third round of the second-type SSB burst in the next subframe of the subframe in which the terminal is located at time T+T SSB1 +P SSB2 In a specific implementation, the network device can start to send the third round of the second-type SSB burst in the next subframe of the subframe in which the terminal is located at time T+T

[0158] Case 2: The second SSB burst is the first SSB burst in the second-type SSB burst.

[0159] FIG. 12 is a schematic diagram of another scenario of adjusting time domain resources provided by an embodiment of the present application. As shown in FIG. 12, the second SSB burst is the first round of SSB burst in the second-type SSB burst.

[0160] In a specific implementation, the sending start time of the first indication information is T1 (or, the T1 can also be the time at which the terminal receives the first indication information, i.e., the aforementioned receiving time of the first indication information, which is not limited in the present application), and the difference (i.e., the time offset of the sending start time of the first indication information to the first round of the second-type SSB burst) between the sending time T1 of the first indication information and the sending start time of the first round of the second-type SSB burst is t d The t d may be protocol predefined or RRC preconfigured by the network device. Optionally, the t d may also be the difference between the hybrid automatic repeat request-acknowledgment (HARQ-ACK) feedback of the first indication information and the sending start time of the first round of the second-type SSB burst.

[0161] At time T1 (T SSB2 +t d ≥ T-T1 > 0), the network device sends the first indication information, at this time, the time domain resources of the first round of the second-type SSB burst overlap with the time domain resources of the first-type SSB burst.

[0162] if (T-T1)-T SSB2 < t d (T-T1)+T SSB1 , the network device starts to send the first round of the second type of SSB burst at time T+T SSB1 , and correspondingly, the terminal starts to receive the first round of the second type of SSB burst at time T+T SSB1 .

[0163] If the network device still needs to send the second round of the second type of SSB burst within the time period from time T+T SSB1 to time T+T SSB1 +P SSB2 , and P SSB2 ≤P SSB1 -T SSB1 -T SSB2 , the network device sends the second round of the second type of SSB burst at time T+T SSB1 +P SSB2 . Correspondingly, the terminal receives the second round of the second type of SSB burst at time T+T SSB1 +P SSB2 .

[0164] In a specific implementation, the network device can start to send the first round of the second type of SSB burst at the next subframe of the subframe where time T+T SSB1 is located, and the terminal can start to receive the first round of the second type of SSB burst at the next subframe of the subframe where time T+T SSB1 is located. If the network device still needs to send the second round of the second type of SSB burst within the time period from time T+T SSB1 to time T+T SSB1 +P SSB2 , and P SSB2 ≤P SSB1 -T SSB1 -T SSB2 , the network device sends the second round of the second type of SSB burst at time T+T SSB1 +P SSB2 . Correspondingly, the terminal receives the second round of the second type of SSB burst at time T+T SSB1 +P SSB2 .

[0165] In addition, in the case where the first SSB burst in the first type of SSB burst and the second SSB burst in the second type of SSB burst overlap in time-frequency resources, the application further provides another method for sending a synchronization signal block to reduce the conflict problem of multiple SSB bursts.

[0166] The network device transmits the first SSB burst on the time domain resource of the first SSB burst and discards the second SSB burst. Correspondingly, the terminal transmits the first SSB burst on the time domain resource of the first SSB burst and gives up receiving the second SSB burst.

[0167] The priority of the first type of SSB burst is higher than that of the second type of SSB burst.

[0168] Optionally, the priority of the two types of SSB bursts can be determined according to the transmission time of the first round of SSB bursts in each type of SSB burst, for example, the first type of SSB burst is the one whose first round of SSB bursts is transmitted first, and the other type of SSB burst is the second type of SSB burst (i.e., the network device transmits the first round of SSB bursts of the first type first, and then transmits the first round of SSB bursts of the second type, which can be transmitted after the first round of SSB bursts of the first type, or after the first round of SSB bursts of the other type of SSB burst, which is not limited in the present application).

[0169] In the case that the first SSB burst in the first type of SSB burst and the second SSB burst in the second type of SSB burst overlap in time-frequency resources, the network device discards the second SSB burst overlapping in time-frequency resources with the first SSB burst, and transmits the second type of SSB burst after the first SSB burst according to the time domain resource occupied by the second type of SSB burst.

[0170] Correspondingly, the terminal gives up receiving the second SSB burst overlapping in time-frequency resources with the first SSB burst, and receives the second type of SSB burst after the first SSB burst according to the time domain resource occupied by the second type of SSB burst.

[0171] The method, network device and terminal provided by the embodiments of the present application reduce the conflict problem of multiple SSB bursts by discarding the second SSB burst overlapping in time-frequency resources with the first SSB burst. By discarding the second SSB burst, the process and steps of adjusting the time domain resource occupied by the second type of SSB burst are simplified, thereby improving the efficiency of reducing the conflict problem of multiple SSB bursts.

[0172] In addition, in the case that the on-demand transmitted second type of SSB burst conflicts with the physical downlink shared channel or the physical downlink control channel allocated by the network device to the terminal, the present application further provides another method for transmitting a synchronization signal block to avoid the conflict problem of SSB bursts and physical downlink shared channels and physical downlink control channels.

[0173] The network device starts to send the second type of SSB burst after sending the first indication information, and the priority of the second type of SSB burst is higher than the priority of the physical downlink shared channel. Correspondingly, after receiving the first indication information, if the time-frequency resources occupied by the second type of SSB burst conflict with the time-frequency resources occupied by the physical downlink shared channel specified by the network device for the terminal, the terminal receives the second type of SSB burst on the time-frequency resources and does not receive the physical downlink shared channel.

[0174] The time-frequency resources occupied by the second type of SSB burst and the physical downlink shared channel are in units of time domain symbols in the time domain and in units of RBs in the frequency domain.

[0175] Optionally, the time-frequency resources occupied by the physical downlink shared channel are indicated by the network device through the downlink control information carried in the physical downlink control channel.

[0176] Another way is that the network device starts to send the second type of SSB burst after sending the first indication information, and the priority of the second type of SSB burst is higher than the priority of the physical downlink control channel. Correspondingly, after receiving the first indication information, if the time-frequency resources occupied by the second type of SSB burst conflict with the time-frequency resources occupied by the physical downlink control channel specified by the network device for the terminal, the terminal receives the second type of SSB burst on the time-frequency resources and does not receive the physical downlink control channel.

[0177] The time-frequency resources occupied by the second type of SSB burst and the physical downlink control channel are in units of time domain symbols in the time domain and in units of RBs in the frequency domain.

[0178] In the existing scheme, the network device can configure multiple on-demand SSBs on a cell, and the time domain characteristics and frequency domain characteristics of different types of on-demand SSBs are different. In one possible case, the network device also configures a continuously transmitted SSB on the cell, which is used for initial access of an idle state terminal or neighbor cell measurement of other terminals that have accessed other serving cells.

[0179] If the frequency domain resources of the on-demand SSB and the frequency domain resources of the continuously transmitted SSB overlap, when the on-demand SSB is triggered at a certain time, that is, the on-demand SSB starts to be transmitted on the cell from a certain time, at some time after the time, the time-frequency resources occupied by the on-demand SSB may conflict with the time-frequency resources occupied by the continuously transmitted SSB. That is, the continuously transmitted SSB and the on-demand SSB configured on the cell are two types of SSBs with conflicting time-frequency resources, which may cause the terminal to have two different interpretations on the conflicting time-frequency resources, causing ambiguity in the terminal receiving the SSB.

[0180] Based on this, the application provides another method for transmitting and receiving a synchronization signal block, defines transmission priorities of different types of SSBs, and helps avoid the problem of ambiguity in receiving SSBs by a terminal due to the network device configuring multiple types of SSBs in a cell.

[0181] Suppose that the network device configures two types of SSBs in the first cell, including a first type of SSB and a second type of SSB, where the first type of SSB is a continuously transmitted SSB, and the second type of SSB is an on-demand transmitted SSB. For the continuously transmitted SSB and the on-demand transmitted SSB, refer to the description in the foregoing text, which will not be repeated here.

[0182] If the frequency domain resources of the first type of SSB and the second type of SSB overlap, the transmission priority of the first type of SSB can be defined as higher than that of the second type of SSB. Taking the frequency domain resources of a first SSB in the first type of SSB and a second SSB in the second type of SSB as an example, after the second SSB is triggered to be transmitted, when the transmission of the first SSB conflicts with the transmission of the second SSB, or the time-frequency resources of the first SSB and the second SSB overlap, the network device gives priority to ensuring the transmission of the SSB with the higher transmission priority and gives up transmitting the SSB with the lower transmission priority, that is, the network device transmits the first SSB in the first cell and gives up transmitting the second SSB. For the terminal, in the case where the time-frequency resources of the first SSB and the second SSB overlap, the terminal receives the first SSB at the time-frequency domain position where the first SSB and the second SSB overlap, or at the time-frequency resources where the conflict exists. In this case, the terminal device is not expected to receive the second SSB. In the present application, the time-frequency resources of the first SSB and the second SSB overlap means that the frequency domain resources of the first SSB and the second SSB overlap and the time domain resources also overlap.

[0183] The network device transmits the first SSB in the first cell and gives up transmitting the second SSB, including that the network device transmits the first SSB on the time-frequency resources where the first SSB and the second SSB overlap and gives up transmitting the second SSB.

[0184] In the present application, the frequency domain resources of the first SSB and the second SSB overlap can mean that the frequency domain resources of the first SSB and the second SSB partially overlap, for example, at least one resource element (RE) or at least one RB of the frequency domain resources occupied by the first SSB overlaps the frequency domain resources occupied by the second SSB. Alternatively, the frequency domain resources of the first SSB and the second SSB overlap can also mean that the frequency domain resources of the first SSB and the second SSB completely overlap.

[0185] Optionally, the first SSB can be one SSB, or one SS / PBCH block. For example, the first SSB is one SSB in a first SSB burst, and the first SSB burst is one round of SSB bursts in the first type of SSBs. The second SSB can be one SSB, or one SS / PBCH block. For example, the second SSB is one SSB in a second SSB burst, and the second SSB burst can be one round of SSB bursts in the second type of SSBs. The network device can give up transmitting the second SSB, which can include the network device giving up transmitting the second SSB burst.

[0186] The network device can further transmit second indication information to the terminal, where the second indication information is used to indicate transmission of the second type of SSBs. Accordingly, the terminal device receives the second indication information.

[0187] In addition, if the frequency domain resources of the SSBs transmitted on demand do not overlap with the frequency domain resources of the SSBs transmitted continuously, when the SSBs transmitted on demand are triggered at a certain time, i.e., the SSBs transmitted on demand start to be transmitted on the cell from a certain time, at a certain time after the certain time, the network device can simultaneously transmit the SSBs transmitted continuously and the SSBs transmitted on demand on the cell, and the terminal needs to simultaneously receive the two types of SSBs on the cell, which will put too high a requirement on the processing capability of the terminal and is difficult to implement.

[0188] Based on this, the present application provides another method for transmitting and receiving SSBs, which defines the reception priorities of different types of SSBs to reduce the implementation complexity of the terminal in simultaneously receiving two types of SSBs with conflicting time domain resources on a cell.

[0189] Still taking the above example of configuring the first type of SSBs and the second type of SSBs on the first cell as an example, where the first type of SSBs are SSBs transmitted continuously, and the second type of SSBs are SSBs transmitted on demand. If the frequency domain resources of a first SSB in the first type of SSBs do not overlap with the frequency domain resources of a second SSB in the second type of SSBs, the reception priority of the second type of SSBs can be defined to be higher than the reception priority of the first type of SSBs. After the second SSB is triggered to be transmitted, if the frequency domain resources of the first SSB and the second SSB do not overlap but the time domain resources overlap, the network device transmits the second SSB. In addition, the network device can choose to transmit the first SSB or can choose not to transmit the first SSB. Accordingly, the terminal receives the second SSB preferentially based on the reception priority of the SSBs, and in this case, the terminal is not expected to receive the first SSB.

[0190] In the present application, the time domain resources of the first SSB and the second SSB can partially overlap, or can completely overlap.

[0191] The network device can also send second indication information to the terminal, the second indication information being used to indicate transmission of the second type of SSB. Correspondingly, the terminal device receives the second indication information.

[0192] The transmission priority of the SSB and / or the reception priority of the SSB can be predefined by a protocol.

[0193] Optionally, the first SSB can be one SSB, or one SS / PBCH block, for example, the first SSB is one SSB in a first SSB burst, and the first SSB burst is one round of SSB bursts in the first type of SSB; the second SSB can be one SSB, or one SS / PBCH block, for example, the second SSB is one SSB in a second SSB burst, and the second SSB burst can be one round of SSB bursts in the second type of SSB.

[0194] Consider the case where the first SSB coincides with the SSB in time-frequency resources:

[0195] For example, when the transmission of the first SSB burst and the second SSB burst conflicts, the network device gives up the transmission of one round of the second SSB burst and prioritizes the transmission of one round of the first SSB burst.

[0196] For another example, when the transmission of the first SSB and the second SSB conflicts, the network device gives up the transmission of one second SSB and prioritizes the transmission of one first SSB.

[0197] Consider the case where the first SSB and the second SSB do not coincide in frequency domain resources but coincide in time domain resources:

[0198] For example, after the second type of SSB is triggered to be sent, the terminal device prioritizes the reception of the second SSB burst on the time domain resources where the first SSB burst and the second SSB burst coincide, and the terminal device is not expected to perform the reception of the first SSB burst.

[0199] For another example, after the second type of SSB is triggered to be sent, the terminal prioritizes the reception of the second SSB signal on the time domain position where the first SSB and the second SSB coincide, and the terminal is not expected to perform the reception of the first SSB signal.

[0200] In the scenario of secondary cell activation, the SSB continuously transmitted on the secondary cell needs to be located in the first activated downlink bandwidth part in the frequency domain, and the frequency domain position of the SSB transmitted on demand is not currently limited. If the SSB transmitted on demand is configured outside the first activated downlink bandwidth part in the frequency domain, after the secondary cell is activated, the terminal needs to switch to the first activated downlink bandwidth part for data transmission and other operations, which will put too high a requirement on the processing capability of the terminal and complicate the implementation.

[0201] Based on this, the application provides another method for transmitting and receiving a synchronization signal block, defines the relationship between an on-demand transmitted SSB and a bandwidth part (BWP), thereby reducing the implementation complexity of the terminal in the scenario of activating a secondary cell.

[0202] For example, the first cell is a secondary cell of the terminal, and the network device configures an on-demand transmitted SSB in the first cell, which can be used to activate the first cell. When the first cell is activated, the network device can configure the on-demand transmitted SSB to be located on the first activated downlink bandwidth part in the frequency domain, so that the terminal can activate the first cell on the first activated downlink bandwidth part, which is beneficial to avoid the power consumption, time delay and other problems caused by BWP switching, and at the same time, is beneficial to avoid the too high requirement on the processing capability of the terminal due to inter-frequency measurement, thereby reducing the implementation complexity of the terminal.

[0203] The method, network device and terminal provided in the embodiments of the application define the priority of transmitting the on-demand transmitted second type of SSB burst and the physical downlink shared channel or the physical downlink control channel allocated for the terminal, thereby avoiding the conflict between the SSB burst and the physical downlink shared channel and the physical downlink control channel. By transmitting the second SSB burst according to the priority, the process and steps of adjusting the time domain resources occupied by the second type of SSB burst are simplified, thereby improving the efficiency of solving the conflict between the SSB burst and the physical downlink shared channel and the physical downlink control channel.

[0204] FIG. 13 and FIG. 14 are schematic block diagrams of communication apparatuses provided by the embodiments of the application. These communication apparatuses can be used to implement the functions of the network device or the terminal in the above-mentioned method embodiments, and thus can also achieve the beneficial effects possessed by the above-mentioned method embodiments.

[0205] As shown in FIG. 13, the communication apparatus 1300 includes a transceiver module 1310. The transceiver module 1310 can also be referred to as a communication interface or a communication module.

[0206] The apparatus 1300 can be used to perform the actions performed by the network device or the terminal in the above-mentioned method embodiments. Alternatively, the apparatus 1300 is a component (for example, a chip) configured in the network device or the terminal. The processing module 1320 is used to perform the processing-related operations of the network device or the terminal in the above-mentioned method embodiments. The transceiver module 1310 is used to perform the receiving and transmitting-related operations of the network device or the terminal in the above-mentioned method embodiments.

[0207] Optionally, the transceiver module 1310 can include a transmitting module and a receiving module. The transmitting module is used to perform the transmitting operations in the above-mentioned method embodiments. The receiving module is used to perform the receiving operations in the above-mentioned method embodiments.

[0208] It should be noted that the apparatus 1300 can include a sending module but not a receiving module. Alternatively, the apparatus 1300 can include a receiving module but not a sending module. Whether the apparatus 1300 includes a sending module or a receiving module can depend on whether the apparatus 1300 performs the sending action and the receiving action in the above-described solutions.

[0209] Optionally, the apparatus 1300 is configured to perform the actions performed by the network device in the above-described embodiments. Details can be referred to the related description in the above-described method embodiments, which will not be repeated here.

[0210] Optionally, the apparatus 1300 further includes a processing module 1320, configured to perform data processing.

[0211] Optionally, the apparatus 1300 can further include a storage module, which can be configured to store data, and / or store a computer program or instructions. The processing module 1320 can read the computer program / instructions and / or data in the storage module, so that the apparatus 1300 implements the above-described method embodiments.

[0212] When the communication apparatus 1300 is configured to implement the functions of the network device in the above-described method embodiments, the transceiver module 1310 is configured to: in a case where a first SSB burst in a first type of SSB burst and a second SSB burst in a second type of SSB burst overlap in time-frequency resources, transmit the first SSB burst on the time domain resource of the first SSB burst, and transmit the second SSB burst on the adjusted time domain resource of the second SSB burst; the transmission starting moment of the second SSB burst is later than the transmission completion moment of the first SSB burst, and the priority of the first type of SSB burst is higher than that of the second type of SSB burst.

[0213] Optionally, the transceiver module 1310 is further configured to: transmit configuration information to the terminal, the configuration information being used to indicate the first transmission parameter and / or the second transmission parameter.

[0214] Optionally, the transceiver module 1310 is further configured to: transmit first indication information to the terminal, the first indication information being used to indicate the start of transmission of the second type of SSB burst.

[0215] Optionally, if the second SSB burst is not the last SSB burst in the second type of SSB burst, the transceiver module 1310 is further configured to: transmit a third SSB burst after the second SSB burst in the second type of SSB burst, a time interval between the third SSB bursts, and a time interval between the first third SSB burst and the second SSB burst being equal to a time interval corresponding to the transmission period of the second type of SSB burst.

[0216] Alternatively, the transceiver 1310 is further configured to receive a third SSB burst after the second SSB burst in the second type of SSB burst, and the time domain resource for receiving the third SSB burst is the same as that of the corresponding SSB burst in the second type of SSB burst before adjustment.

[0217] When the communication apparatus 1300 is configured to implement the functions of the terminal in the foregoing method embodiments, the transceiver 1310 is configured to: in a case where the first SSB burst in the first type of SSB burst and the second SSB burst in the second type of SSB burst have time-frequency resource overlap, receive the first SSB burst on the time domain resource of the first SSB burst, and receive the second SSB burst on the adjusted time domain resource of the second SSB burst; the reception start time of the second SSB burst is later than the reception completion time of the first SSB burst, and the priority of the first type of SSB burst is higher than that of the second type of SSB burst.

[0218] Optionally, the transceiver 1310 is further configured to receive configuration information sent by the network device, and the configuration information is used to indicate the first transmission parameter and / or the second transmission parameter.

[0219] Optionally, the transceiver 1310 is further configured to receive first indication information sent by the network device, and the first indication information is used to indicate the start of transmission of the second type of SSB burst.

[0220] Optionally, if the second SSB burst is not the last SSB burst in the second type of SSB burst, the transceiver 1310 is further configured to receive a third SSB burst after the second SSB burst in the second type of SSB burst, a time interval between the third SSB bursts, and a time interval between the first third SSB burst and the second SSB burst is equal to the time interval corresponding to the transmission period of the second type of SSB burst.

[0221] Alternatively, the transceiver 1310 is further configured to receive a third SSB burst after the second SSB burst in the second type of SSB burst, and the time domain resource for receiving the third SSB burst is the same as that of the corresponding SSB burst in the second type of SSB burst before adjustment.

[0222] For more detailed description of the transceiver 1310, refer to the related description in the foregoing method embodiments, which will not be repeated here. The processing module 1320 can be implemented by a processor, and the transceiver 1310 can be implemented by a transceiver.

[0223] For more detailed description of the configuration information and the first indication information, refer to the related description in the foregoing method embodiments, which will not be repeated here.

[0224] Fig. 14 is a schematic block diagram of another communication apparatus 1400 provided by the embodiments of the present application. As shown in Fig. 14, the apparatus 1400 includes one or more processors 1410 and interface circuit 1420. The one or more processors 1410 and the interface circuit 1420 are coupled to each other. It can be understood that the interface circuit 1420 can be a transceiver or an input / output interface. Optionally, the apparatus 1400 can further include a memory 1430 configured to store instructions executed by the processor 1410 or store input data required by the processor 1410 to execute instructions or store data generated by the processor 1410 after executing instructions. Sometimes, the interface circuit 1420 can also be understood as a part of the processor 1410, and in this case, the apparatus 1400 includes the processor 1410.

[0225] The one or more processors 1410 and the memory 1430 can be separately arranged or integrally arranged, and no limitation is made in this regard.

[0226] When the communication apparatus 1400 is configured to implement the above method, the processor 1410 is configured to implement the functions of the processing module 1320, and the interface circuit 1420 is configured to implement the functions of the transceiver module 1310.

[0227] When the above communication apparatus is a chip applied to a network device or a terminal, the chip of the network device implements the functions of the network device in the above method embodiments, and the chip of the terminal implements the functions of the terminal in the above method embodiments. The chip of the network device receives information from the terminal, which can be understood as that the information is first received by other modules (such as a radio frequency module or an antenna) in the network device, and then transmitted to the chip of the network device by these modules. The chip of the network device transmits information to the terminal, which can be understood as that the information is first transmitted to other modules (such as a radio frequency module or an antenna) in the network device, and then transmitted to the terminal by these modules.

[0228] The embodiments of the present application further provide a computer readable storage medium configured to store a computer program, which, when executed on a computer, causes the above method for transmitting a synchronization signal block or the above method for receiving a synchronization signal block to be performed. Alternatively, the computer program includes instructions for implementing the above method for transmitting a synchronization signal block or the above method for receiving a synchronization signal block.

[0229] The embodiments of the present application further provide a computer program product, including: a computer program or instructions, which, when executed on a computer, causes the above method for transmitting a synchronization signal block or the above method for receiving a synchronization signal block to be performed.

[0230] It is understood that the processor in the embodiments of the present application can be a central processing unit, and can also be other general-purpose processors, digital signal processors, application-specific integrated circuits, field programmable gate arrays or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. The general-purpose processor can be a microprocessor, or any conventional processor.

[0231] The method steps in the embodiments of the present application can be implemented in hardware or in software instructions executable by a processor. The software instructions can be composed of corresponding software modules, which can be stored in a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an erasable programmable read-only memory, an electrically erasable programmable read-only memory, a register, a hard disk, a mobile hard disk, a compact disc read-only memory (CD-ROM) (also known as a read-only optical disc), 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 the storage medium can be located in an application-specific integrated circuit. In addition, the application-specific integrated circuit can be located in a base station or a terminal. The processor and the storage medium can also exist as discrete components in the base station or the terminal.

[0232] 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 programs or instructions. When the computer programs or 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 performed. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user equipment, or other programmable apparatus. The computer programs or instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another computer-readable storage medium, for example, the computer programs or instructions can be transferred from one website, computer, server, or data center to another website, computer, server, or data center through a wired or wireless manner. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that integrates one or more available media. The available medium can be a magnetic medium, such as a floppy disk, a hard disk, a magnetic tape; an optical medium, such as a digital video disc; or a semiconductor medium, such as a solid-state disk. The computer-readable storage medium can be a volatile or non-volatile storage medium, or can include both volatile and non-volatile storage media.

[0233] In various embodiments of the present application, the terms and / or descriptions between different embodiments are consistent and can be referred to each other if there is no special description and logical conflict, and the technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0234] In embodiments of the present application, each term and English abbreviation, such as SSB burst, SSB pattern, time interval, etc., is an exemplary example given for convenience of description, which should not constitute any limitation on the present application. The present application does not exclude the possibility of defining other terms capable of achieving the same or similar functions in existing or future protocols.

[0235] The first, second and various number mentioned in the embodiments of the present application are only for the convenience of description, and are not used to limit the scope of the embodiments of the present application.

[0236] In embodiments of the present application, "at least one" means one or more, and "multiple" means two or more. The association relationship between the associated objects is described, which means that there can be three kinds of relationships, for example, A and / or B, which can represent the following cases: A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the associated objects before and after it. "At least one of the following" or similar expressions means any combination of these items, including any combination of single item or multiple items. For example, at least one of a, b and c can mean: a, or b, or c, or a and b, or a and c, or b and c, or a, b and c, where a, b, c can be single or multiple.

[0237] In embodiments of the present application, "sending" and "receiving" in the present application represent the direction of signal transmission. For example, "sending first indication information to the terminal" can be understood as that the destination of the first indication information is the terminal, which can include direct transmission through the air interface, or indirect transmission through the air interface by other units or modules. "Receiving first indication information from the access network device" can be understood as that the source of the first indication information is the access network device, which can include direct reception from the access network device through the air interface, or indirect reception from the access network device through the air interface from other units or modules. "Sending" can also be understood as "output" of the chip interface, and "receiving" can also be understood as "input" of the chip interface.

[0238] In other words, sending and receiving can be carried out between devices, for example, between a terminal and a network device; or can be carried out within a device, for example, between components, modules, chips, software modules or hardware modules within a device through a bus, wire or interface.

Claims

1. A method for transmitting a synchronization signal block, the method comprising: Comprising: In a case where a time-frequency resource of a first synchronization signal block (SSB) in a first type of SSB coincides with a time-frequency resource of a second SSB in a second type of SSB, transmitting the first SSB in a first cell, and giving up transmitting the second SSB; Wherein, the first type of SSB is a type of SSB that is continuously transmitted, and the second type of SSB is a type of SSB that is transmitted on demand.

2. The method of claim 1, wherein, The first SSB is one SSB in a first SSB burst, and the second SSB is one SSB in a second SSB burst. The giving up transmitting the second SSB comprises: Giving up transmitting the second SSB burst.

3. The method according to claim 1 or 2, characterized in that, The method further comprises: Transmitting second indication information to a terminal, the second indication information being used to indicate that the second type of SSB starts transmission.

4. The method according to any one of claims 1 to 3, characterized in that, In a case where the first cell is a secondary cell and the first cell is activated, the second type of SSB is located in a first activated downlink bandwidth part in a frequency domain.

5. A method of receiving a synchronization signal block, the method comprising: Comprising: In a case where a time-frequency resource of a first synchronization signal block (SSB) in a first type of SSB coincides with a time-frequency resource of a second SSB in a second type of SSB, receiving the first SSB in a first cell; Wherein, the first type of SSB is a type of SSB that is continuously transmitted, and the second type of SSB is a type of SSB that is transmitted on demand.

6. A method of receiving a synchronization signal block, the method comprising: Comprising: In a case where a time-frequency resource of a first synchronization signal block (SSB) in a first type of SSB coincides with a time-frequency resource of a second SSB in a second type of SSB, receiving the first SSB in a first cell; Wherein, the first type of SSB is a type of SSB that is continuously transmitted, and the second type of SSB is a type of SSB that is transmitted on demand.

7. The method according to claim 5 or 6, characterized in that, The first SSB is one SSB in a first SSB burst, and the second SSB is one SSB in a second SSB burst.

8. The method according to any one of claims 5 to 7, characterized in that, The method further comprises: Receiving second indication information from a network device, the second indication information being used to indicate that the second type of SSB starts transmission.

9. A communications device, characterized by A module for implementing the method of any one of claims 1 to 4, or a module for implementing the method of any one of claims 5 to 8.

10. A communications device, characterized by At least one processor coupled to a memory, the memory being used to store programs or instructions, when the programs or instructions are executed by the at least one processor, causing the method of any one of claims 1 to 4 to be executed, or causing the method of any one of claims 5 to 8 to be executed.

11. A computer readable storage medium, characterized in that, A computer program for storing, when the computer program is run on a communication device, causing the method of any one of claims 1 to 4 to be executed, or causing the method of any one of claims 5 to 8 to be executed.

12. A computer program product, characterised in that, Comprising: A computer program or instructions, when the computer program or instructions are run, causing the method of any one of claims 1 to 4 to be executed, or causing the method of any one of claims 5 to 8 to be executed.

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